CN115127251A - Multifunctional cold and heat combined supply system and method - Google Patents

Abstract

The invention relates to a multifunctional combined cooling and heating system and a method, wherein the multifunctional combined cooling and heating system comprises a combined cooling and heating unit, an absorption refrigerating device, a single refrigerating auxiliary unit, a heating auxiliary unit, a cooling and heating storage unit and an electric control unit; besides the systems, the system also comprises a cold and heat combined supply method, a cold and heat combined supply refrigeration method, a cold and heat combined supply energy storage method, a cold and heat combined supply system single refrigeration method, a cold and heat combined supply system single heating method and a cold and heat combined supply system coupling heating method. The heat pump is used for recovering the condensation heat of the air conditioner to produce hot water to drive absorption type refrigeration and the air conditioner is used for recovering the evaporation cold energy of the heat pump to produce refrigeration, so that the combined cooling and heating refrigeration or the storage and utilization are realized, and meanwhile, the combined cooling and heating system can be independently refrigerated, independently heated and coupled to be heated so as to meet the requirements of different seasons and working conditions, thereby improving the energy efficiency, saving the energy, saving the investment and reducing the operation cost.

Description

Multifunctional cold and heat combined supply system and method

Technical Field

The invention relates to a multifunctional combined cooling and heating system and a multifunctional combined cooling and heating method, in particular to a multifunctional combined cooling and heating system and a multifunctional combined cooling and heating method for cooling or storage and utilization by recovering waste heat of an air conditioner condenser and cold energy of a heat pump evaporator, and belongs to the technical field of heating and ventilation.

Background

The vapor compression type air conditioner and the heat pump are common equipment in modern production and life, the waste heat discharged by a condenser in the air conditioner refrigeration process and the cold energy discharged by an evaporator in the heat pump heating process are not usually recycled, the equipment operation refrigeration coefficient and energy efficiency are lower, and the power consumption is higher; the energy recovery of the existing air conditioner and heat pump energy recovery technology is not sufficient, so that a certain degree of resource waste is caused; the existing air-conditioning heat pump coupling technology takes water as a heat transfer medium between an air-conditioning condenser and a heat pump evaporator for indirect heat exchange, so that the heat exchange efficiency is low, and energy is wasted; the condensing waste heat during the refrigeration operation of the air conditioning system is far greater than the heat demand of the conventional domestic hot water, and the waste heat resource cannot be fully utilized only when the condensing waste heat is used for preparing the domestic hot water; the existing air conditioner and heat pump system has single function, so that the equipment investment and the operation cost are increased, meanwhile, the low-temperature starting performance is poor, the water outlet temperature of the heat pump is low, and the requirement of high-temperature hot water is difficult to meet.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a multifunctional combined cooling and heating system and a method for fully and efficiently recovering and fully utilizing the waste heat of an air conditioner and the cold energy of a heat pump.

The multifunctional cold and hot combined supply system comprises a cold and hot combined supply unit; the combined cooling and heating unit comprises an air conditioner compressor, a coupling heat exchanger, an air conditioner throttling device, an air conditioner evaporator, a heat pump compressor, a heat pump condenser and a heat pump throttling device; the air conditioner compressor is connected with the coupling heat exchanger through a pipeline; the coupling heat exchanger is connected with an air conditioner throttling device through a pipeline; the air conditioner throttling device is connected with the air conditioner evaporator through a pipeline; the air conditioner evaporator is connected with an air conditioner compressor through a pipeline; the heat pump compressor is connected with the heat pump condenser through a pipeline; the heat pump condenser is connected with the heat pump throttling device through a pipeline; the heat pump throttling device is connected with the coupling heat exchanger through a pipeline; the coupling heat exchanger is connected with the heat pump compressor through a pipeline.

The multifunctional combined cooling and heating system also comprises an absorption refrigerating device; the absorption type refrigerating device is connected with the heat pump condenser through a pipeline and a heat supply reversing valve.

The multifunctional combined cooling and heating system also comprises a single cooling auxiliary unit; the single refrigeration auxiliary unit comprises a first single cold reversing valve, an air conditioner auxiliary heat exchanger and a second single cold reversing valve; the first single-cold reversing valve is respectively connected with the air conditioner compressor and the air conditioner auxiliary heat exchanger through pipelines; and the second single-cold reversing valve is respectively connected with the air conditioner auxiliary heat exchanger and the air conditioner throttling device through pipelines.

The multifunctional combined cooling and heating system also comprises a heating auxiliary unit; the heating auxiliary unit comprises a first single-heat reversing valve, a heat pump evaporator, a second single-heat reversing valve, a first coupling heating reversing valve, a second coupling heating reversing valve, a third coupling heating reversing valve and a fourth coupling heating reversing valve; the first single-heat reversing valve is respectively connected with the heat pump throttling device, the heat pump evaporator and the coupling heat exchanger through pipelines; the second single-heat reversing valve is respectively connected with the coupling heat exchanger, the heat pump evaporator and the heat pump compressor through pipelines; the first coupling heating reversing valve is respectively connected with the air conditioner throttling device, the air conditioner evaporator and the second coupling heating reversing valve through pipelines; the second coupling heating reversing valve is also respectively connected with an air conditioner auxiliary heat exchanger of the single cooling auxiliary unit and a second single cooling reversing valve through pipelines; the third coupling heating reversing valve is respectively connected with the fourth coupling heating reversing valve, the air-conditioning auxiliary heat exchanger of the single cooling auxiliary unit and the first single cooling reversing valve through pipelines; and the fourth coupling heating reversing valve is also respectively connected with the air conditioner evaporator and the air conditioner compressor through pipelines.

The multifunctional combined cooling and heating system further comprises a cooling and heating storage unit; the cold and heat storage unit comprises a cold storage device and a heat storage device; the cold accumulation device is connected with the air-conditioning evaporator through a pipeline and a cold supply reversing valve; the heat storage device is connected with the heat pump condenser through a pipeline and a heat supply reversing valve.

The multifunctional combined cooling and heating system also comprises an electric control unit; the electric control unit comprises a remote thermometer, a remote liquid level meter, a cold supply reversing valve, a heat supply reversing valve and a control device; the remote thermometer is arranged on a refrigerant outlet pipeline of the air conditioner evaporator; the remote transmission liquid level meter is arranged on the heat storage device; the cold supply reversing valve is connected with a refrigerant outlet of the air conditioner evaporator through a pipeline; the heat supply reversing valve is connected with a water outlet of the heat pump condenser through a pipeline; the air conditioner compressor, the heat pump compressor, the first single cold reversing valve and the second single cold reversing valve of the single refrigeration auxiliary unit, the first single hot reversing valve, the second single hot reversing valve, the first coupling heating reversing valve, the second coupling heating reversing valve, the third coupling heating reversing valve and the fourth coupling heating reversing valve of the heating auxiliary unit, the cold supply reversing valve, the heat supply reversing valve, the remote transmission thermometer and the remote transmission liquid level meter are respectively and electrically connected with the control device.

The cold and heat combined supply method comprises the following specific steps: starting an air conditioner compressor and a heat pump compressor, wherein an air conditioner working medium enters a coupling heat exchanger for condensation and heat release through a port a and a port b of a first single-cold reversing valve of a single-refrigeration auxiliary unit, the condensed working medium enters an air conditioner throttling device for throttling through a port a and a port b of a second single-cold reversing valve of the single-refrigeration auxiliary unit, then enters an air conditioner evaporator for evaporation and refrigeration through a port a and a port b of a first coupling heating reversing valve of the heating auxiliary unit, a refrigerant in the air conditioner evaporator is cooled and then is cooled outwards through a port a and a port c of a cooling reversing valve of an electric control unit, and a gas air conditioner working medium which absorbs heat and expands enters the air conditioner compressor through a port a and a port b of a fourth coupling heating reversing valve of the heating auxiliary unit to complete air conditioner refrigeration circulation; meanwhile, a heat pump working medium is conveyed by a heat pump compressor through a pipeline to enter a heat pump condenser for condensation to release heat for heating, after the temperature of the heating medium water in the heat pump condenser is raised, the heating medium water is supplied to the outside through the a and b interfaces of a heat supply reversing valve of an electric control unit, the condensed heat pump working medium enters a coupling heat exchanger through the a and b interfaces of a first single heat reversing valve of a heating auxiliary unit after entering a heat pump throttling device for throttling through the pipeline to absorb the condensation heat released by the air conditioner working medium for evaporation and simultaneously cool the air conditioner working medium, and the heat-absorbing expanded gaseous heat pump working medium enters the heat pump compressor through the a and b interfaces of a second single heat reversing valve of the heating auxiliary unit to complete the heat pump heating cycle; the process is circulated to realize the combined cooling and heating operation.

The cold and heat combined supply refrigeration method comprises the following specific steps: starting an air conditioner compressor and a heat pump compressor, wherein an air conditioner working medium enters a coupling heat exchanger for condensation and heat release through a port a and a port b of a first single-cold reversing valve of a single-refrigeration auxiliary unit, the condensed working medium enters an air conditioner throttling device for throttling through a port a and a port b of a second single-cold reversing valve of the single-refrigeration auxiliary unit, then enters an air conditioner evaporator for evaporation and refrigeration through a port a and a port b of a first coupling heating reversing valve of the heating auxiliary unit, a refrigerant in the air conditioner evaporator is cooled and then is cooled outwards through a port a and a port c of a cooling reversing valve of an electric control unit, and a gas air conditioner working medium which absorbs heat and expands enters the air conditioner compressor through a port a and a port b of a fourth coupling heating reversing valve of the heating auxiliary unit to complete air conditioner refrigeration circulation; meanwhile, a heat pump working medium is conveyed into a heat pump condenser through a heat pump compressor through a pipeline to be condensed and release heat for heating, after the temperature of the heating medium water in the heat pump condenser is raised, the heating medium water is conveyed into an absorption type refrigerating device through a port a and a port c of a heat supply reversing valve of an electric control unit for refrigerating, the condensed heat pump working medium enters a coupling heat exchanger through a port a and a port b of a first single heat reversing valve of a heating auxiliary unit for throttling after passing through the pipeline to absorb the condensation heat released by the air conditioner working medium for evaporating and cooling the air conditioner working medium, and the heat absorption expanded gaseous heat pump working medium enters the heat pump compressor through a port a and a port b of a second single heat reversing valve of the heating auxiliary unit to complete the heat pump heating cycle; the process is circulated to realize the cooling and heating combined refrigeration operation.

The cold and hot combined supply energy storage method comprises the following specific steps: starting an air conditioner compressor and a heat pump compressor, wherein an air conditioner working medium enters a coupling heat exchanger for condensation and heat release through a port a and a port b of a first single-cold reversing valve of a single-refrigeration auxiliary unit, the condensed working medium enters an air conditioner throttling device for throttling through a port a and a port b of a second single-cold reversing valve of the single-refrigeration auxiliary unit, then enters an air conditioner evaporator for evaporation and refrigeration through a port a and a port b of a first coupling heating reversing valve of the heating auxiliary unit, a refrigerant in the air conditioner evaporator is cooled and then enters a cold accumulation device for heat exchange and cold storage through a port a and a port b of a cooling reversing valve of an electric control unit, and a gas air conditioner working medium which absorbs heat and expands enters the air conditioner compressor through a port a and a port b of a fourth coupling heating reversing valve of the heating auxiliary unit to complete air conditioner refrigeration circulation; meanwhile, a heat pump working medium is conveyed by a heat pump compressor through a pipeline to enter a heat pump condenser for condensation and release heat for heating, after the temperature of the heating medium water in the heat pump condenser is raised, the heating medium water enters a heat storage device for storing heat through the a and b interfaces of a heat supply reversing valve of an electric control unit, the condensed heat pump working medium enters a coupling heat exchanger through the a and b interfaces of a first single heat reversing valve of a heating auxiliary unit after entering a throttling device for throttling through the pipeline to absorb the condensation heat released by the air conditioner working medium for evaporation and simultaneously cool the air conditioner working medium, and the heat-absorbing expanded gaseous heat pump working medium enters the heat pump compressor through the a and b interfaces of a second single heat reversing valve of the heating auxiliary unit to complete the heat pump heating cycle; the process is circulated to realize the energy storage of the cold and hot combined supply.

The single refrigeration method of the combined cooling and heating system comprises the following specific steps: starting an air conditioner compressor, enabling air conditioner working media to enter an air conditioner auxiliary heat exchanger for condensation and heat release through an a interface and a c interface of a first single-cold reversing valve of a single cooling auxiliary unit and an a interface and a b interface of a third coupling heating reversing valve, enabling the condensed working media to enter an air conditioner throttling device for throttling through the a interface and the b interface of a second coupling heating reversing valve of the heating auxiliary unit and the c interface and the b interface of the second single-cold reversing valve of the single cooling auxiliary unit, enabling the condensed working media to enter an air conditioner evaporator for evaporation and refrigeration through the a interface and the b interface of the first coupling heating reversing valve of the heating auxiliary unit, and enabling heat-absorbing expanded gaseous air conditioner working media to enter the air conditioner compressor through an a interface and a b interface of a fourth coupling heating reversing valve of the heating auxiliary unit to complete air conditioner refrigeration circulation; the process is circulated to realize the single refrigeration operation of the combined cooling and heating system.

The single heating method of the combined cooling and heating system comprises the following specific steps: starting a heat pump compressor, conveying a heat pump working medium into a heat pump condenser through a pipeline by the heat pump compressor to condense and release heat for heating, allowing the condensed heat pump working medium to enter a heat pump evaporator through an a interface and a c interface of a first single heat reversing valve of a heating auxiliary unit after entering a heat pump throttling device for throttling through the pipeline, absorbing external heat for evaporation, and allowing a gas heat pump working medium absorbing heat for expansion to enter the heat pump compressor through a c interface and a b interface of a second single heat reversing valve of the heating auxiliary unit to finish a heat pump heating cycle; the process is circulated to realize the single heating operation of the combined cooling and heating system.

The invention relates to a coupling heating method of a combined cooling and heating system, which comprises the following specific steps: starting an air conditioner compressor and a heat pump compressor, enabling an air conditioner working medium to enter a coupling heat exchanger for condensation and heat release through a port a and a port b of a first single-cold reversing valve of a single-refrigeration auxiliary unit, enabling the condensed working medium to enter an air conditioner throttling device for throttling through a port a and a port b of a second single-cold reversing valve of the single-refrigeration auxiliary unit, enabling the condensed working medium to enter the air conditioner auxiliary heat exchanger for absorbing external heat for evaporation through a port a and a port c of the first coupling heating reversing valve of the heating auxiliary unit and a port c and a port a of the second coupling heating reversing valve, and enabling a heat-absorbing expanded gaseous air conditioner working medium to enter the air conditioner compressor through a port b and a port c of a third coupling heating reversing valve and a port c and a port b of a fourth coupling heating reversing valve of the heating auxiliary unit to complete air conditioner refrigeration circulation; meanwhile, a heat pump working medium is conveyed to a heat pump condenser through a heat pump compressor through a pipeline to be condensed and release heat for heating, the condensed heat pump working medium enters a coupling heat exchanger through an a interface and a b interface of a first single heat reversing valve of a heating auxiliary unit after entering a heat pump throttling device for throttling, the condensed heat released by the air conditioner working medium is absorbed by the coupling heat exchanger to be evaporated and simultaneously the air conditioner working medium is cooled, and the heat-absorbing expanded gaseous heat pump working medium enters the heat pump compressor through an a interface and a b interface of a second single heat reversing valve of the heating auxiliary unit to complete a heat pump heating cycle; the process is circulated to realize the coupled heating operation of the combined cooling and heating system.

The invention has the beneficial effects that: (1) the multifunctional combined cooling and heating system and the method can recover the waste heat discharged by a condenser in the air-conditioning refrigeration process and the cold energy discharged by an evaporator in the heat pump heating process, improve the air-conditioning refrigeration coefficient and the heat pump energy efficiency ratio, and reduce the power consumption; (2) the multifunctional cold and heat combined supply system and the method provided by the invention adopt the air conditioner condenser and the heat pump evaporator to directly couple and exchange heat, have high heat exchange efficiency, can fully recover the waste heat of the air conditioner and the cold energy of the heat pump, and save energy resources; (3) the multifunctional cold and hot combined supply system and the method can fully utilize the condensation waste heat of the air conditioning system during the refrigeration operation, fully utilize waste heat resources and improve the energy efficiency of the system; (4) the multifunctional combined cooling and heating system and the method provided by the invention can realize multiple functions of refrigeration, heating, hot water production, combined cooling and heating, cold and heat accumulation peak shifting and valley filling operation and the like, can reduce equipment investment and reduce operation cost, and simultaneously has good low-temperature starting performance, higher water outlet temperature of a heat pump and expandable application range.

Drawings

FIG. 1 is a schematic diagram of the system of the present invention.

In the figure: 1. the system comprises a cold storage device, 2, a remote thermometer, 3, a first coupling heating reversing valve, 4, an air conditioner throttling device, 5, an air conditioner auxiliary heat exchanger, 6, a second single-cold reversing valve, 7, a second coupling heating reversing valve, 8, a first single-hot reversing valve, 9, a heat pump throttling device, 10, a heat supply reversing valve, 11, a remote liquid level meter, 12, a heat storage device, 13, a cold supply reversing valve, 14, an air conditioner evaporator, 15, a fourth coupling heating reversing valve, 16, an air conditioner compressor, 17, a third coupling heating reversing valve, 18, a first single-cold reversing valve, 19, a coupling heat exchanger, 20, a second single-hot reversing valve, 21, a heat pump evaporator, 22, a heat pump compressor, 23, a heat pump condenser, 24, a control device, 25 and an absorption refrigeration device.

Detailed Description

As shown in fig. 1, the multifunctional combined cooling and heating system of the present invention includes a combined cooling and heating unit; the combined cooling and heating unit comprises anair conditioner compressor 16, acoupling heat exchanger 19, an air conditioner throttling device 4, anair conditioner evaporator 14, aheat pump compressor 22, aheat pump condenser 23 and a heatpump throttling device 9; theair conditioner compressor 16 is connected with thecoupling heat exchanger 19 through a pipeline; thecoupling heat exchanger 19 is a plate type, sleeve type or shell and tube type heat exchanger; thecoupling heat exchanger 19 is connected with the air conditioner throttling device 4 through a pipeline; the air conditioner throttling device 4 is connected with anair conditioner evaporator 14 through a pipeline; theair conditioner evaporator 14 is connected with anair conditioner compressor 16 through a pipeline; theheat pump compressor 22 is connected with aheat pump condenser 23 through a pipeline; theheat pump condenser 23 is connected with the heatpump throttling device 9 through a pipeline; the heatpump throttling device 9 is connected with acoupling heat exchanger 19 through a pipeline; thecoupling heat exchanger 19 is connected with aheat pump compressor 22 through a pipeline.

The multifunctional combined cooling and heating system further comprises an absorption refrigeratingdevice 25; the absorption refrigeratingdevice 25 is connected with theheat pump condenser 23 through a pipeline and a heatsupply reversing valve 10.

The multifunctional combined cooling and heating system also comprises a single cooling auxiliary unit; the single refrigeration auxiliary unit comprises a first singlecold reversing valve 18, an air-conditioningauxiliary heat exchanger 5 and a second single cold reversing valve 6; the first single-cold reversing valve 18 is respectively connected with the air-conditioning compressor 16 and the air-conditioningauxiliary heat exchanger 5 through pipelines; the air-conditioning auxiliary heat exchanger is an air-cooling fin type, water source or ground source heat exchanger; and the second single-cold reversing valve 6 is respectively connected with the air conditionerauxiliary heat exchanger 5 and the air conditioner throttling device 4 through pipelines.

The multifunctional combined cooling and heating system also comprises a heating auxiliary unit; the heating auxiliary unit comprises a first single-hot reversing valve 8, aheat pump evaporator 21, a second single-hot reversing valve 20, a first coupling heating reversing valve 3, a second coupling heating reversing valve 7, a third couplingheating reversing valve 17 and a fourth couplingheating reversing valve 15; the first single-heat reversing valve 8 is respectively connected with the heatpump throttling device 9, theheat pump evaporator 21 and thecoupling heat exchanger 19 through pipelines; the heat pump evaporator is an air-cooled fin type, water source or ground source heat exchanger; the second single-heat reversing valve 20 is respectively connected with thecoupling heat exchanger 19, theheat pump evaporator 21 and theheat pump compressor 22 through pipelines; the first coupling heating reversing valve 3 is respectively connected with the air conditioner throttling device 4, theair conditioner evaporator 14 and the second coupling heating reversing valve 7 through pipelines; the second coupling heating reversing valve 7 is also respectively connected with an air-conditioningauxiliary heat exchanger 5 and a second single-cooling reversing valve 6 of the single-cooling auxiliary unit through pipelines; the third couplingheating reversing valve 17 is respectively connected with the fourth couplingheating reversing valve 15, the air-conditioningauxiliary heat exchanger 5 of the single cooling auxiliary unit and the first singlecooling reversing valve 18 through pipelines; the fourth couplingheating reversing valve 15 is also connected with the air-conditioning evaporator 14 and the air-conditioning compressor 16 through pipelines respectively.

The multifunctional combined cooling and heating system further comprises a cooling and heating storage unit; the cold and heat storage unit includes a cold storage device 1 and aheat storage device 12; the cold accumulation device 1 is connected with an air-conditioning evaporator 14 through a pipeline and a coldsupply reversing valve 13; theheat storage device 12 is connected with aheat pump condenser 23 through a pipeline and a heatsupply reversing valve 10.

The multifunctional combined cooling and heating system also comprises an electric control unit; the electric control unit comprises a remote thermometer 2, a remoteliquid level meter 11, a coldsupply reversing valve 13, a heatsupply reversing valve 10 and acontrol device 24; the remote thermometer 2 is arranged on a refrigerant outlet pipeline of theair conditioner evaporator 14; the remoteliquid level meter 11 is arranged on theheat storage device 12; the coldsupply reversing valve 13 is connected with a refrigerant outlet of the air-conditioning evaporator 14 through a pipeline; the heatsupply reversing valve 10 is connected with a water outlet of aheat pump condenser 23 through a pipeline; theair conditioner compressor 16, theheat pump compressor 22, the first singlecold reversing valve 18 and the second single cold reversing valve 6 of the single cooling auxiliary unit, the first singlehot reversing valve 8 and the second singlehot reversing valve 20 of the heating auxiliary unit, the first coupling heating reversing valve 3, the second coupling heating reversing valve 7, the third couplingheating reversing valve 17, the fourth couplingheating reversing valve 15, the coldsupply reversing valve 13, the heatsupply reversing valve 10, the remote thermometer 2 and the remoteliquid level meter 11 are respectively and electrically connected with thecontrol device 24.

The cold and heat combined supply method comprises the following specific steps: starting anair conditioner compressor 16 and aheat pump compressor 22, enabling an air conditioner working medium to enter acoupling heat exchanger 19 for condensation and heat release through a port a and a port b of a first single-cold reversing valve 18 of a single-refrigeration auxiliary unit, enabling the condensed working medium to enter a liquid storage dryer and an air conditioner throttling device 4 for throttling through a port a and a port b of a second single-cold reversing valve 6 of the single-refrigeration auxiliary unit, enabling the condensed working medium to enter anair conditioner evaporator 14 for evaporation and refrigeration through a port a and a port b of a first coupling heating reversing valve 3 of the heating auxiliary unit, cooling a refrigerant in theair conditioner evaporator 14, enabling the refrigerant to supply cold outwards through a port a and a port c of acooling reversing valve 13 of an electric control unit, enabling a gas-liquid separator and theair conditioner compressor 16 to enter a gas-liquid separator through a port a and a port b of a fourth couplingheating reversing valve 15 of the heating auxiliary unit to complete air conditioner refrigeration cycle; meanwhile, a heat pump working medium is conveyed to enter aheat pump condenser 23 through a pipeline by aheat pump compressor 22 to be condensed and release heat for heating, after the temperature of the heat medium water in theheat pump condenser 23 is raised, the heat medium water is supplied with hot water to the outside through a port a and a port b of a heatsupply reversing valve 10 of an electric control unit, the condensed heat pump working medium enters acoupling heat exchanger 19 through a pipeline to absorb the condensation heat released by the air conditioner working medium to be evaporated and simultaneously to cool the air conditioner working medium after entering a port a and a port b of a first singleheat reversing valve 8 of a heating auxiliary unit after being throttled by a pipeline, and the gas heat pump working medium absorbing heat expansion enters a gas-liquid separator and theheat pump compressor 22 through a port a and a port b of a second singleheat reversing valve 20 of the heating auxiliary unit to complete heat pump heating circulation; the process is circulated to realize the combined cooling and heating operation.

The cold and heat combined supply refrigeration method comprises the following specific steps: starting anair conditioner compressor 16 and aheat pump compressor 22, enabling an air conditioner working medium to enter acoupling heat exchanger 19 for condensation and heat release through a port a and a port b of a first single-cold reversing valve 18 of a single-refrigeration auxiliary unit, enabling the condensed working medium to enter a liquid storage dryer and an air conditioner throttling device 4 for throttling through a port a and a port b of a second single-cold reversing valve 6 of the single-refrigeration auxiliary unit, enabling the condensed working medium to enter anair conditioner evaporator 14 for evaporation and refrigeration through a port a and a port b of a first coupling heating reversing valve 3 of the heating auxiliary unit, cooling a refrigerant in theair conditioner evaporator 14, enabling the refrigerant to supply cold outwards through a port a and a port c of acooling reversing valve 13 of an electric control unit, enabling a gas-liquid separator and theair conditioner compressor 16 to enter a gas-liquid separator through a port a and a port b of a fourth couplingheating reversing valve 15 of the heating auxiliary unit to complete air conditioner refrigeration cycle; meanwhile, a heat pump working medium is conveyed to enter aheat pump condenser 23 through a pipeline by aheat pump compressor 22 to be condensed and release heat for heating, after the temperature of the heat medium water in theheat pump condenser 23 is raised, the heat medium water is conveyed to enter an absorption type refrigeratingdevice 25 through a port a and a port c of a heatsupply reversing valve 10 of an electric control unit for refrigerating, the condensed heat pump working medium enters acoupling heat exchanger 19 through a pipeline to absorb the condensation heat released by the air conditioner working medium to be evaporated and simultaneously cool the air conditioner working medium after entering a port a and a port b of a first singleheat reversing valve 8 of a heating auxiliary unit after being throttled by a pipeline, and the gas heat pump working medium absorbing heat for expansion enters a gas-liquid separator and theheat pump compressor 22 through a port a and a port b of a second singleheat reversing valve 20 of the heating auxiliary unit to complete the heat pump heating cycle; the process is circulated to realize the cooling and heating combined refrigeration operation.

The cold and hot combined supply energy storage method comprises the following specific steps: starting anair conditioner compressor 16 and aheat pump compressor 22, enabling an air conditioner working medium to enter acoupling heat exchanger 19 for condensation and heat release through a port a and a port b of a first single-cold reversing valve 18 of a single-refrigeration auxiliary unit, enabling the condensed working medium to enter a liquid storage dryer and an air conditioner throttling device 4 for throttling through a port a and a port b of a second single-cold reversing valve 6 of the single-refrigeration auxiliary unit, enabling the condensed working medium to enter anair conditioner evaporator 14 for evaporation and refrigeration through a port a and a port b of a first coupling heating reversing valve 3 of the heating auxiliary unit, enabling a refrigerant in theair conditioner evaporator 14 to enter a cold storage device 1 for heat exchange and cold storage through a port a and a port b of a coldsupply reversing valve 13 of an electric control unit after being cooled, enabling a gas air conditioner working medium absorbing heat and expanding to enter a gas-liquid separator and theair conditioner compressor 16 through ports a port a and a port b of a fourth couplingheating reversing valve 15 of the heating auxiliary unit to complete air conditioner refrigeration cycle; meanwhile, a heat pump working medium is conveyed to enter aheat pump condenser 23 through a pipeline by aheat pump compressor 22 to be condensed and release heat for heating, after the temperature of the heat medium water in theheat pump condenser 23 is raised, the heat medium water enters aheat storage device 12 through a port a and a port b of a heatsupply reversing valve 10 of an electric control unit to store heat, the condensed heat pump working medium enters acoupling heat exchanger 19 through a pipeline to absorb the condensation heat released by the air conditioner working medium to be evaporated and simultaneously cool the air conditioner working medium after entering a port a and a port b of a first singleheat reversing valve 8 of a heating auxiliary unit after being throttled by a pipeline, and the gas heat pump working medium absorbing heat for expansion enters a gas-liquid separator and theheat pump compressor 22 through a port a and a port b of a second singleheat reversing valve 20 of the heating auxiliary unit to complete the heat pump heating cycle; the process is circulated to realize the energy storage of the cold and hot combined supply.

The single refrigeration method of the combined cooling and heating system comprises the following specific steps: starting anair conditioner compressor 16, enabling an air conditioner working medium to enter an air conditionerauxiliary heat exchanger 5 for condensation and heat release through an a interface and a c interface of a first single-cold reversing valve 18 of a single-cooling auxiliary unit and an a interface and a b interface of a third couplingheating reversing valve 17, enabling the condensed working medium to enter a liquid storage drier and an air conditioner throttling device 4 for throttling through an a interface and a b interface of a second coupling heating reversing valve 7 of the single-cooling auxiliary unit and a c interface and a b interface of a second single-cold reversing valve 6 of the single-cooling auxiliary unit, enabling the condensed working medium to enter anair conditioner evaporator 14 for evaporation and refrigeration through an a interface and a b interface of a first coupling heating reversing valve 3 of the heating auxiliary unit, and enabling a gas-liquid separator and theair conditioner compressor 16 to enter a heat-absorbing and expanding gas air conditioner working medium through an a interface and a b interface of a fourth couplingheating reversing valve 15 of the heating auxiliary unit to complete air conditioner refrigeration circulation; the process is circulated to realize the single refrigeration operation of the combined cooling and heating system.

The single heating method of the combined cooling and heating system comprises the following specific steps: starting aheat pump compressor 22, conveying a heat pump working medium into aheat pump condenser 23 through a pipeline by theheat pump compressor 22 for condensation and heat release, heating, allowing the condensed heat pump working medium to enter a liquid storage dryer and a heatpump throttling device 9 through a pipeline for throttling, allowing the condensed heat pump working medium to enter aheat pump evaporator 21 through a port a and a port c of a first single-heat reversing valve 8 of a heating auxiliary unit for absorbing external heat for evaporation, and allowing a gas-liquid separator and theheat pump compressor 22 to finish a heat pump heating cycle by the heat-absorbing expanded gas-state heat pump working medium through a port c and a port b of a second single-heat reversing valve 20 of the heating auxiliary unit; the process is circulated to realize the single heating operation of the combined cooling and heating system.

The invention relates to a coupling heating method of a combined cooling and heating system, which comprises the following specific steps: starting anair conditioner compressor 16 and aheat pump compressor 22, enabling an air conditioner working medium to enter acoupling heat exchanger 19 for condensation and heat release through a port a and a port b of a first single-cold reversing valve 18 of a single-refrigeration auxiliary unit, enabling the condensed working medium to enter a liquid storage dryer and an air conditioner throttling device 4 for throttling through a port a and a port b of a second single-cold reversing valve 6 of the single-refrigeration auxiliary unit, enabling the condensed working medium to enter an air conditionerauxiliary heat exchanger 5 for absorbing external heat for evaporation through a port a and a port c of a first coupling heating reversing valve 3 of the heating auxiliary unit and a port c and a port a of a second coupling heating reversing valve 7 of the heating auxiliary unit, and enabling a gas-liquid separator and theair conditioner compressor 16 to finish air conditioner refrigeration circulation through a port b and a port c of a third couplingheating reversing valve 17 of the heating auxiliary unit and a port c and a port b of a fourth couplingheating reversing valve 15 of the heating auxiliary unit; meanwhile, a heat pump working medium is conveyed by aheat pump compressor 22 through a pipeline to enter aheat pump condenser 23 for condensation and release heat for heating, the condensed heat pump working medium enters a liquid storage dryer and a heatpump throttling device 9 through a pipeline for throttling, then enters acoupling heat exchanger 19 through interfaces a and b of a first single-heat reversing valve 8 of a heating auxiliary unit to absorb condensation heat released by the air conditioner working medium for evaporation and simultaneously cool the air conditioner working medium, and the heat-absorbing expanded gaseous heat pump working medium enters a gas-liquid separator and theheat pump compressor 22 through interfaces a and b of a second single-heat reversing valve 20 of the heating auxiliary unit to complete a heat pump heating cycle; the process is circulated to realize the coupled heating operation of the combined cooling and heating system.

The above description is only for the purpose of illustrating preferred embodiments of the present invention and is not intended to limit the scope of the present invention, so that the method steps and equivalent variations using the contents of the present specification and drawings are within the scope of the present invention.

Claims (12)

1. The utility model provides a multi-functional cold and hot cogeneration system which characterized in that: comprises a cold and heat combined supply unit; the combined cooling and heating unit comprises an air conditioner compressor (16), a coupling heat exchanger (19), an air conditioner throttling device (4), an air conditioner evaporator (14), a heat pump compressor (22), a heat pump condenser (23) and a heat pump throttling device (9); the air conditioner compressor (16) is connected with the coupling heat exchanger (19) through a pipeline; the coupling heat exchanger (19) is connected with the air conditioner throttling device (4) through a pipeline; the air conditioner throttling device (4) is connected with an air conditioner evaporator (14) through a pipeline; the air conditioner evaporator (14) is connected with an air conditioner compressor (16) through a pipeline; the heat pump compressor (22) is connected with the heat pump condenser (23) through a pipeline; the heat pump condenser (23) is connected with the heat pump throttling device (9) through a pipeline; the heat pump throttling device (9) is connected with the coupling heat exchanger (19) through a pipeline; the coupling heat exchanger (19) is connected with a heat pump compressor (22) through a pipeline.

2. The multifunctional combined cooling and heating system according to claim 1, wherein: also comprises an absorption refrigeration device (25); the absorption refrigeration device (25) is connected with the heat pump condenser (23) through a pipeline and a heat supply reversing valve (10).

3. The multifunctional combined cooling and heating system according to claim 1, wherein: also includes a single refrigeration auxiliary unit; the single refrigeration auxiliary unit comprises a first single cold reversing valve (18), an air-conditioning auxiliary heat exchanger (5) and a second single cold reversing valve (6); the first single-cold reversing valve (18) is respectively connected with the air conditioner compressor (16) and the air conditioner auxiliary heat exchanger (5) through pipelines; and the second single-cold reversing valve (6) is respectively connected with the air-conditioning auxiliary heat exchanger (5) and the air-conditioning throttling device (4) through pipelines.

4. The multifunctional combined cooling and heating system according to claim 1, wherein: the system also comprises a heating auxiliary unit; the heating auxiliary unit comprises a first single-heat reversing valve (8), a heat pump evaporator (21), a second single-heat reversing valve (20), a first coupling heating reversing valve (3), a second coupling heating reversing valve (7), a third coupling heating reversing valve (17) and a fourth coupling heating reversing valve (15); the first single-heat reversing valve (8) is respectively connected with the heat pump throttling device (9), the heat pump evaporator (21) and the coupling heat exchanger (19) through pipelines; the second single-heat reversing valve (20) is respectively connected with the coupling heat exchanger (19), the heat pump evaporator (21) and the heat pump compressor (22) through pipelines; the first coupling heating reversing valve (3) is respectively connected with the air conditioner throttling device (4), the air conditioner evaporator (14) and the second coupling heating reversing valve (7) through pipelines; the second coupling heating reversing valve (7) is also respectively connected with an air-conditioning auxiliary heat exchanger (5) of the single cooling auxiliary unit and a second single cooling reversing valve (6) through pipelines; the third coupling heating reversing valve (17) is respectively connected with the fourth coupling heating reversing valve (15), the air-conditioning auxiliary heat exchanger (5) of the single cooling auxiliary unit and the first single cooling reversing valve (18) through pipelines; and the fourth coupling heating reversing valve (15) is also respectively connected with an air conditioner evaporator (14) and an air conditioner compressor (16) through pipelines.

5. The multifunctional combined cooling and heating system according to claim 1, wherein: the cold and hot storage unit is also included; the cold and heat storage unit comprises a cold storage device (1) and a heat storage device (12); the cold accumulation device (1) is connected with an air-conditioning evaporator (14) through a pipeline and a cold supply reversing valve (13); the heat storage device (12) is connected with a heat pump condenser (23) through a pipeline and a heat supply reversing valve (10).

6. The multifunctional combined cooling and heating system according to any one of claims 1-5, wherein: the device also comprises an electric control unit; the electric control unit comprises a remote thermometer (2), a remote liquid level meter (11), a cooling reversing valve (13), a heating reversing valve (10) and a control device (24); the remote thermometer (2) is arranged on a refrigerant outlet pipeline of the air-conditioning evaporator (14); the remote liquid level meter (11) is arranged on the heat storage device (12); the cold supply reversing valve (13) is connected with a refrigerant outlet of an air conditioner evaporator (14) through a pipeline; the heat supply reversing valve (10) is connected with a water outlet of a heat pump condenser (23) through a pipeline; the air conditioner comprises an air conditioner compressor (16), a heat pump compressor (22), a first single cold reversing valve (18) and a second single cold reversing valve (6) of a single refrigeration auxiliary unit, a first single hot reversing valve (8) of the heating auxiliary unit, a second single hot reversing valve (20), a first coupling heating reversing valve (3), a second coupling heating reversing valve (7), a third coupling heating reversing valve (17) and a fourth coupling heating reversing valve (15), a cold supply reversing valve (13), a heat supply reversing valve (10), a remote thermometer (2) and a remote liquid level meter (11) which are respectively electrically connected with a control device (24).

7. A combined cooling and heating method is characterized in that: a combined cooling and heating method implemented by the multifunctional combined cooling and heating system of any one of claims 1 to 6 comprises the following specific steps: starting an air conditioner compressor (16) and a heat pump compressor (22), enabling an air conditioner working medium to enter a coupling heat exchanger (19) through a port a and a port b of a first single-cold reversing valve (18) of a single-refrigeration auxiliary unit for condensation and heat release, enabling the condensed working medium to enter an air conditioner throttling device (4) through a port a and a port b of a second single-cold reversing valve (6) of the single-refrigeration auxiliary unit for throttling, enabling the condensed working medium to enter an air conditioner evaporator (14) for evaporation and refrigeration through a port a and a port b of a first coupling heating reversing valve (3) of the heating auxiliary unit, cooling a refrigerant in the air conditioner evaporator (14), enabling the refrigerant to supply cold outwards through a port a and a port c of a cooling reversing valve (13) of an electric control unit, and enabling a gas air conditioner working medium absorbing heat and expanding to enter the air conditioner compressor (16) through a port b port a fourth coupling heating reversing valve (15) of the heating auxiliary unit to complete air conditioner refrigeration cycle; meanwhile, a heat pump working medium is conveyed to enter a heat pump condenser (23) through a pipeline by a heat pump compressor (22) to be condensed and release heat for heating, after the temperature of the heat medium water in the heat pump condenser (23) is raised, the heat medium water is supplied for supplying hot water to the outside through a port a and a port b of a heat supply reversing valve (10) of an electric control unit, the condensed heat pump working medium enters a coupling heat exchanger (19) through a pipeline to absorb the condensed heat released by the air conditioner working medium to evaporate and cool the air conditioner working medium after entering a throttling device (9) of the heat pump through a port a and a port b of a first single heat reversing valve (8) of a heating auxiliary unit, and the gas heat pump working medium absorbing the heat expansion enters the heat pump compressor (22) through a port a and a port b of a second single heat reversing valve (20) of the heating auxiliary unit to complete the heat pump heating cycle; the process is circulated to realize the combined cooling and heating operation.

8. A cold and hot combined supply refrigeration method is characterized in that: the combined cooling and heating refrigeration method implemented by the multifunctional combined cooling and heating system according to any one of claims 1 to 6 comprises the following specific steps: starting an air conditioner compressor (16) and a heat pump compressor (22), enabling an air conditioner working medium to enter a coupling heat exchanger (19) through a port a and a port b of a first single-cold reversing valve (18) of a single-refrigeration auxiliary unit for condensation and heat release, enabling the condensed working medium to enter an air conditioner throttling device (4) through a port a and a port b of a second single-cold reversing valve (6) of the single-refrigeration auxiliary unit for throttling, enabling the condensed working medium to enter an air conditioner evaporator (14) for evaporation and refrigeration through a port a and a port b of a first coupling heating reversing valve (3) of the heating auxiliary unit, cooling a refrigerant in the air conditioner evaporator (14), enabling the refrigerant to supply cold outwards through a port a and a port c of a cooling reversing valve (13) of an electric control unit, and enabling a gas air conditioner working medium absorbing heat and expanding to enter the air conditioner compressor (16) through a port b port a fourth coupling heating reversing valve (15) of the heating auxiliary unit to complete air conditioner refrigeration cycle; meanwhile, a heat pump working medium is conveyed to enter a heat pump condenser (23) through a pipeline by a heat pump compressor (22) to be condensed and release heat for heating, after the temperature of the heat medium water in the heat pump condenser (23) is raised, the heat medium water is conveyed to enter an absorption type refrigerating device (25) through a port a and a port c of a heat supply reversing valve (10) of an electric control unit for refrigerating, the condensed heat pump working medium enters a heat pump throttling device (9) through a pipeline for throttling, then enters a coupling heat exchanger (19) through a port a and a port b of a first single heat reversing valve (8) of a heating auxiliary unit to absorb the condensation heat released by the air conditioner working medium for evaporating and cooling the air conditioner working medium, and the gas heat pump working medium absorbing heat for expansion enters the heat pump compressor (22) through a port a and a port b of a second single heat reversing valve (20) of the heating auxiliary unit to complete heat pump heating circulation; the process is circulated to realize the cooling and heating combined refrigeration operation.

9. A cold and hot combined supply energy storage method is characterized in that: a combined cooling and heating energy storage method implemented by the multifunctional combined cooling and heating system of any one of claims 1 to 6 comprises the following specific steps: starting an air conditioner compressor (16) and a heat pump compressor (22), enabling an air conditioner working medium to enter a coupling heat exchanger (19) through a port a and a port b of a first single-cold reversing valve (18) of a single-refrigeration auxiliary unit for condensation and heat release, enabling the condensed working medium to enter an air conditioner throttling device (4) through a port a and a port b of a second single-cold reversing valve (6) of the single-refrigeration auxiliary unit for throttling, enabling the condensed working medium to enter an air conditioner evaporator (14) for evaporation and refrigeration through a port a and a port b of a first coupling heating reversing valve (3) of a heating auxiliary unit, enabling a refrigerant in the air conditioner evaporator (14) to enter a cold storage device (1) for heat exchange and cold storage after being cooled through a port a and a port b of a cold supply reversing valve (13) of an electric control unit, the gaseous air-conditioning working medium absorbing heat and expanding enters an air-conditioning compressor (16) through a port a and a port b of a fourth coupling heating reversing valve (15) of the heating auxiliary unit to complete air-conditioning refrigeration circulation; meanwhile, a heat pump working medium is conveyed to enter a heat pump condenser (23) through a pipeline by a heat pump compressor (22) to be condensed and release heat for heating, after the temperature of the heat medium water in the heat pump condenser (23) is raised, the heat medium water enters a heat storage device (12) through a port a and a port b of a heat supply reversing valve (10) of an electric control unit to store heat, the condensed heat pump working medium enters a heat pump throttling device (9) through a pipeline to be throttled, then enters a coupling heat exchanger (19) through a port a and a port b of a first single heat reversing valve (8) of a heating auxiliary unit to absorb the condensation heat released by the air conditioner working medium to evaporate and cool the air conditioner working medium, and the gas heat pump working medium absorbing heat for expansion enters the heat pump compressor (22) through a port a and a port b of a second single heat reversing valve (20) of the heating auxiliary unit to complete heat pump heating circulation; the process is circulated to realize the energy storage of the cold and hot combined supply.

10. A single refrigeration method of a combined cooling and heating system is characterized in that: the single refrigeration method of the combined cooling and heating system implemented by the multifunctional combined cooling and heating system of any one of claims 1 to 6 comprises the following specific steps: starting an air conditioner compressor (16), enabling an air conditioner working medium to enter an air conditioner auxiliary heat exchanger (5) for condensation and heat release through an a interface and a c interface of a first single-cold reversing valve (18) of a single-refrigeration auxiliary unit and an a interface and a b interface of a third coupling heating reversing valve (17), enabling the condensed working medium to enter an air conditioner throttling device (4) for throttling through the a interface and the b interface of a second coupling heating reversing valve (7) of the heating auxiliary unit and the c interface and the b interface of a second single-cold reversing valve (6) of the single-refrigeration auxiliary unit, enabling the condensed working medium to enter an air conditioner evaporator (14) for evaporation and refrigeration through the a interface and the b interface of a first coupling heating reversing valve (3) of the heating auxiliary unit, and enabling a gas air conditioner working medium absorbing heat and expanding to enter the air conditioner compressor (16) through the a interface and the b interface of a fourth coupling heating reversing valve (15) of the heating auxiliary unit to complete air conditioner refrigeration cycle; the process is circulated to realize the single refrigeration operation of the combined cooling and heating system.

11. A single heating method of a combined cooling and heating system is characterized in that: the single heating method implemented by the multifunctional combined cooling and heating system of any one of claims 1 to 6 comprises the following specific steps: starting a heat pump compressor (22), conveying a heat pump working medium into a heat pump condenser (23) through a pipeline by the heat pump compressor (22) to condense and release heat for heating, conveying the condensed heat pump working medium into a heat pump throttling device (9) through a pipeline for throttling, then conveying the condensed heat pump working medium into a heat pump evaporator (21) through interfaces a and c of a first single-heat reversing valve (8) of a heating auxiliary unit to absorb external heat for evaporation, and conveying the heat-absorbing expanded gaseous heat pump working medium into the heat pump compressor (22) through interfaces c and b of a second single-heat reversing valve (20) of the heating auxiliary unit to complete a heat pump heating cycle; the process is circulated to realize the single heating operation of the combined cooling and heating system.

12. A coupled heating method of a combined cooling and heating system is characterized in that: the coupled heating method implemented by the multifunctional combined cooling and heating system of any one of claims 1 to 6 comprises the following specific steps: starting an air conditioner compressor (16) and a heat pump compressor (22), enabling an air conditioner working medium to enter a coupling heat exchanger (19) through a port a and a port b of a first single-cold reversing valve (18) of a single-refrigeration auxiliary unit for condensation and heat release, enabling the condensed working medium to enter an air conditioner throttling device (4) through a port a and a port b of a second single-cold reversing valve (6) of the single-refrigeration auxiliary unit for throttling, enabling the condensed working medium to enter an air conditioner auxiliary heat exchanger (5) through a port a and a port c of a first coupling heating reversing valve (3) of the heating auxiliary unit and a port c and a port a of a second coupling heating reversing valve (7) for absorbing external heat for evaporation, and enabling a gas air conditioner working medium absorbing heat for expansion to enter the air conditioner compressor (16) through a port b and a port c port of a third coupling heating reversing valve (17) of the heating auxiliary unit and a port c and a port b port of a fourth coupling heating reversing valve (15) for completing air conditioner refrigeration circulation; meanwhile, a heat pump working medium is conveyed to a heat pump condenser (23) through a pipeline by a heat pump compressor (22) to be condensed and release heat for heating, the condensed heat pump working medium enters a heat pump throttling device (9) through the pipeline for throttling, then enters a coupling heat exchanger (19) through a port a and a port b of a first single heat reversing valve (8) of a heating auxiliary unit to absorb condensation heat released by an air conditioner working medium for evaporation and simultaneously cool the air conditioner working medium, and a gas heat pump working medium absorbing heat for expansion enters the heat pump compressor (22) through a port a and a port b of a second single heat reversing valve (20) of the heating auxiliary unit to complete a heat pump heating cycle; the process is circulated to realize the coupled heating operation of the combined cooling and heating system.

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