The utility model content
The utility model aims to provide a kind of air-conditioner of heating capacity when improving low temperature.
The utility model provides a kind of air-conditioner, comprise compressor, outdoor heat exchanger, indoor heat exchanger and the making-up air device that is connected with the gas supplementing opening of compressor, first end of indoor heat exchanger is connected with compressor, air-conditioner also comprises the throttling arrangement that is arranged between making-up air device and the indoor heat exchanger, and is arranged between throttling arrangement and the making-up air device to improve the refrigerant heater of making-up air device air compensation.
Further, making-up air device is a flash evaporation; Flash evaporation comprises the first cold-producing medium mouth that is connected with second end of indoor heat exchanger and the gaseous phase outlet that is connected with the gas supplementing opening of compressor and the second cold-producing medium mouth that is connected with outdoor heat exchanger; The throttling arrangement series connection is arranged between second end of the first cold-producing medium mouth and indoor heat exchanger.
Further, the series connection of refrigerant heater is arranged between the throttling arrangement and the first cold-producing medium mouth.
Further, throttling arrangement is connected by first refrigerant line with the first cold-producing medium mouth; The refrigerant heater and first refrigerant line are arranged between the throttling arrangement and the first cold-producing medium mouth in parallel.
Further, making-up air device is an economizer, comprises first refrigerant chamber and second refrigerant chamber of mutual isolation and heat exchange; First refrigerant chamber is connected between indoor heat exchanger and the outdoor heat exchanger; Second refrigerant chamber is connected between the gas supplementing opening of indoor heat exchanger and compressor.
Further, the throttling arrangement series connection is arranged between the indoor heat exchanger and second refrigerant chamber; The series connection of refrigerant heater is arranged between the throttling arrangement and second refrigerant chamber.
Further, making-up air device is an economizer, comprises first refrigerant chamber and second refrigerant chamber of mutual isolation and heat exchange; First end of first refrigerant chamber is communicated with second end of indoor heat exchanger, and second end of first refrigerant chamber is communicated with first end of outdoor heat exchanger; First end of second refrigerant chamber is connected with second end of first refrigerant chamber by second refrigerant line, and second end of second refrigerant chamber is connected with the gas supplementing opening of compressor.
Further, the throttling arrangement series connection is arranged on second refrigerant line; The series connection of refrigerant heater is arranged between first end of the throttling arrangement and second refrigerant chamber.
According to air-conditioner of the present utility model,, the cold-producing medium that enters making-up air device is heated, thereby raising enters the mass dryness fraction of the cold-producing medium of making-up air device by the refrigerant heater is set between throttling arrangement and making-up air device.Compare existing tonifying Qi and increase the enthalpy technology, can significantly improve the air compensation to compressor of making-up air device, and then effectively improve the heating capacity of air-conditioner, heat requirement when satisfying low temperature, reduced the delivery temperature of compressor simultaneously.In addition, according to the flow direction of cold-producing medium, the refrigerant heater is arranged on the downstream of throttling arrangement, has prevented to cause because the refrigerant heater makes the liquid refrigerant partial gasification non-normal working of throttling arrangement.
The specific embodiment
Describe the utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Shown in Fig. 1 to 4, according to air-conditioner of the present utility model, comprise compressor 1, outdoor heat exchanger 2, indoor heat exchanger 3 and the making-up air device 5 that is connected with the gas supplementing opening of compressor 1, first end of indoor heat exchanger 3 is connected with compressor 1, air-conditioner also comprises thethrottling arrangement 401 that is arranged between making-up air device 5 and the indoor heat exchanger 3, and is arranged betweenthrottling arrangement 401 and the making-up air device 5 to improve the refrigerant heater 9 of making-up air device 5 air compensations.The utility model is by being provided with refrigerant heater 9 betweenthrottling arrangement 401 and making-up air device 5, to entering the cold-producing medium heating of making-up air device 5, thereby improve the mass dryness fraction of the cold-producing medium that enters making-up air device 5, improve air compensation and heating capacity, reduced the delivery temperature of compressor 1 simultaneously.In addition, according to the flow direction of cold-producing medium, refrigerant heater 9 is arranged on the downstream ofthrottling arrangement 401, has prevented to cause because the refrigerant heater makes the liquid refrigerant partial gasification non-normal working of throttling arrangement.
Particularly, as shown in Figure 1, according to first embodiment of the present utility model, the exhaust of compressor 1 is through indoor heat exchanger 3(condenser),throttling arrangement 401 throttlings enter 9 heat absorptions of refrigerant heater after being depressurized to intermediate pressure, the cold-producing medium mass dryness fraction is improved, enter making-up air device 5(flash evaporation then) middle gas-liquid separation, the gaseous refrigerant that separates enters the gas supplementing opening of compressor 1 to the compressor tonifying Qi by the gaseous phase outlet of flash evaporation, liquid refrigerant is throughsecond throttling arrangement 402, outdoor heat exchanger 2(evaporimeter), gas-liquid separator 6 back air entries from compressor 1 enter compressor and mix with the gas that enters from gas supplementing opening through being compressed to intermediate pressure for the first time, mixed gas through being compressed to for the second time high pressure and finally discharging from exhaust outlet, forms the circulation that heats of air-conditioner again.By refrigerant heater 9 is set, thereby improve the mass dryness fraction of the cold-producing medium that enters flash evaporation effectively, improve the air compensation of flash evaporation, and then improve the heating capacity of air device, can also reduce the delivery temperature of compressor.
As shown in Figure 2, according to second embodiment of the present utility model, different with first embodiment is, in a second embodiment,throttling arrangement 401 and making-up air device 5(flash evaporation) between be connected by first refrigerant line, the refrigerant heater 9 and first refrigerant line are arranged between the first cold-producing medium mouth ofthrottling arrangement 401 and flash evaporation in parallel, and promptly refrigerant heater 9 is connected betweenthrottling arrangement 401 and the flash evaporation by an other refrigerant line.Compare first embodiment, refrigerant heater 9 is arranged in parallel, and can reduce the flow of heated refrigerant, thereby the part cold-producing medium is gasified more fully, thereby more helps improving air compensation, improves heating capacity.
As shown in Figure 3, according to the 3rd embodiment of the present utility model, in this embodiment, making-up air device 5 is an economizer, comprises first refrigerant chamber and second refrigerant chamber of mutual isolation and heat exchange.Second refrigerant chamber is used for the evaporation gasification of the cold-producing medium after the throttling, thereby to the gas supplementing opening tonifying Qi of compressor 1, in the process of cold-producing medium evaporation gasification, absorbs heat from first refrigerant chamber, thereby make the refrigerant in first refrigerant chamber cold excessively in second refrigerant chamber.
Particularly, in the 3rd embodiment, first refrigerant chamber is connected between indoor heat exchanger 3 and the outdoor heat exchanger 2; Second refrigerant chamber is connected between the gas supplementing opening of indoor heat exchanger 3 and compressor 1;Throttling arrangement 401 series connection are arranged between the indoor heat exchanger 3 and second refrigerant chamber; 9 series connection of refrigerant heater are arranged between thethrottling arrangement 401 and second refrigerant chamber.
The exhaust of compressor 1 is through indoor heat exchanger 3(condenser) after, cold-producing medium is divided into first branch road (tonifying Qi road) and second branch road, the cold-producing medium of first branch road (tonifying Qi road) enters second refrigerant chamber that enters making-up air device 5(economizer after the evaporation of refrigerant heater 9 heat absorbing parts throughthrottling arrangement 401 throttlings to intermediate pressure) continue to absorb heat and evaporation fully, gas supplementing opening from compressor 1 enters compressor then, the cold-producing medium of second branch road enters first refrigerant chamber of making-up air device 5(economizer) crossed cold after mainroad throttling arrangement 402, outdoor heat exchanger 2(evaporimeter) and gas-liquid separator 6, entering compressor from the air entry of compressor 1 then mixes with tonifying Qi after being compressed to intermediate pressure for the first time, mixed gas forms the circulation that heats of air-conditioner through compression for the second time and finally from the exhaust outlet of compressor discharge.The refrigerant of 9 pairs first branch roads of refrigerant heater (tonifying Qi road) heats, thereby increases the mass flow of the cold-producing medium of first branch road, correspondingly, increases the air compensation of making-up air device, thereby improves the heating capacity of air-conditioner, improves the heating effect of air-conditioner.But also can reduce the delivery temperature of compressor 1.
As shown in Figure 4, according to the 4th embodiment of the present utility model, different with the 3rd embodiment is, in the present embodiment, first end of second refrigerant chamber is connected with second end of first refrigerant chamber, promptly second end of first end of second refrigerant chamber and first refrigerant chamber is connected by second refrigerant line, andthrottling arrangement 401 and refrigerant heater 9 are arranged on second refrigerant line.
The exhaust of compressor 1 is through indoor heat exchanger 3(condenser) after, cold-producing medium enters first refrigerant chamber of making-up air device 5(economizer), be divided into two branch roads then, a part is through second throttling arrangement, 402 inlet chamber external heat exchanger 2(evaporimeters) evaporate gasification, enter the air entry of compressor then from gas-liquid separator 6; A part is throughthrottling arrangement 401 and refrigerant heater 9 part endothermic gasifications in addition, enter second refrigerant chamber of making-up air device 5(economizer) be gasified totally, finally the gas supplementing opening from compressor 1 enters the compressor 1, and with compressor 1 in be compressed to for the first time intermediate pressure medium pressure gas mixes after through compression for the second time and finally discharge from exhaust outlet of compressor, the formation air-conditioner heat circulation.Refrigerant adds hot charging and changes 9 and improved the cold-producing medium mass dryness fraction that enters economizer, and the refrigerant mass fluxes on corresponding tonifying Qi road increases, thereby has improved air compensation and heating capacity, has reduced the delivery temperature of compressor simultaneously.
In embodiment one to four of the present utility model, thereby refrigerant heater 9 can substitute the electrical auxiliary heater of existing indoor apparatus of air conditioner and eliminate problems such as the security appliance hidden danger brought because of the auxiliary electro-heat device, condensation, simultaneously comparatively speaking, also improved the heating performance coefficient to a certain extent.The thermal source of the refrigerant heater of air-conditioner of the present utility model can be that the electric heating conversion also can be other thermals source, as used heat, waste heat or solar energy optical-thermal etc.Heat the input heat that circulation time can start the refrigerant heater as required and regulate the refrigerant heater.Close the refrigerant heater during kind of refrigeration cycle.
The compressor of air-conditioner of the present utility model can be the combination of the single-stage compressor of the accurate split-compressor of vortex, birotor twin-stage tonifying Qi increasing enthalpy compressor or two arbitrary forms, also can be the helical-lobe compressor or the centrifugal compressor of band tonifying Qi enthalpy-increasing function.The throttling arrangement of air-conditioner of the present utility model can be capillary, restriction sleeve, heating power expansion valve, electric expansion valve, restricting orifice or aforementioned any reasonable combination.The circulation of air-conditioner of the present utility model can add parts such as necessary four-way change-over valve or simply improve to adapt to refrigeration, heat or to heat application scenario such as water.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect:
According to air-conditioner of the present utility model,, the cold-producing medium that enters making-up air device is heated, thereby raising enters the mass dryness fraction of the cold-producing medium of making-up air device by the refrigerant heater is set on the refrigerant line between throttling arrangement and the making-up air device.Compare existing tonifying Qi and increase the enthalpy technology, can significantly improve the air compensation to compressor of making-up air device, and then effectively improve the heating capacity of air-conditioner, heat requirement when satisfying low temperature, reduced the delivery temperature of compressor simultaneously.In addition, according to the flow direction of cold-producing medium, the refrigerant heater is arranged on the downstream of throttling arrangement, has prevented to cause because the refrigerant heater makes the liquid refrigerant partial gasification non-normal working of throttling arrangement.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.