Forward cycle heat pumpThe present invention relates to the nucleus equipment in a kind of air-conditioning system, particularly forward cycle heat pump, is to be used to discuss office building, condo, the desirable air-conditioning of villa, hot water supply equipment.
Heat pump in the past is the steering-effecting by cross valve, makes refrigerant forward or reverse flow in system, realizes the function of cooling or heat supply.Yet, also just because of still utilize above-mentioned principle to carry out defrosting during heat supply in the winter time, therefore when defrosting to indoor temporary transient cooling, to outdoor coil pipe used heat supply, to melt than the frosting on outdoor coil pipe used, when reducing defrosting as far as possible to the harmful effect of indoor environment, compressor is moved, to reduce the internal circulating load of refrigerant under low power state.This defrosting mode not only has a strong impact on indoor thermal environment, and rate-of flow is little during because of its defrosting, cause the defrosting time long, in the influence degree of objectively just more having aggravated to indoor thermal environment, particularly when outdoor temperature is lower than zero degree, frequent defrosting causes indoor thermal environment to worsen, and should not use heat pump so be considered to the north of the Changjiang river area usually.For these reasons, there is the people between the compressor of existing heat pump is imported and exported, to increase a capillary bypass line in recent years, the defrosting mode is improved to some extent, when defrosting, can keep heating load to indoor 1/6, however, the electricity that influences to indoor environment is that significantly its compressor when defrosting is still be lower than under the normal power state and moves, so the defrosting time is also longer.Simultaneously because cross valve is the critical component of heat pump in the past, because of its complex structure, operation parts are many, become the rapid wear point of equipment, often cause the equipment failure rate height, it is consuming time to take a lot of work.
The object of the present invention is to provide that a kind of simple in structure, compact and reasonable, fault rate are low, in the quickly defrosting process to indoor normal heat supply, do not influence indoor environment, strong to outdoor environment temperature adaptability, can annual supply domestic hot-water and obvious energy-conservation forward cycle heat pump.
The objective of the invention is to realize by the following technical solutions, it is made up of fan coil and compressor, the port of export of its compressor links to each other with the entrance point of fan coil by heat exchanger, throttle part, the other two ends that are connected to throttle part of magnetic valve, compressor inlet links to each other with the port of export of fan coil by heat exchanger, throttle part, and magnetic valve is connected between the primary side port of export of the entrance point of throttle part and heat exchanger.
The secondary side of described heat exchanger also is provided with water circulation pipe, and the secondary side of its heat exchanger links to each other with secondary side, the thermal storage water tank of heat exchanger by water pipe, valve, which is provided with feed pipe; Another secondary side of heat exchanger links to each other with another secondary side of heat exchanger and thermal storage water tank's bottom by water pipe, tubing pump, valve, tubing pump, and return pipe is located on the pipeline between tubing pump and the valve, and the thermal storage water tank is provided with the heat supply water pipe.
The present invention compared with prior art, owing to utilize the bypass action of magnetic valve, whether the work of controlling throttle part realizes the evaporation and the condensation function conversion of outdoor fan coil pipe, refrigerant all is in forward circulation in cooling and heat supply operating mode, refrigerant in the heat of vaporization evaporator coil of storing in outer thermal storage water tank of dependence equipment or the heating system that equipment connects is realized the high-temperature steam defrosting, and there is defrosting speed fast through evidence, compressor oepration at full load in its defrost process, normal heat supply does not influence indoor environment, can whole year production hot water, especially reclaim condensation waste heat summer, not only energy-conservation but also be beneficial to environment, energy-conservation about 40% than split-type air conditioner, and the selection by different refrigerants and pressure is applicable to any outdoor environment temperature.While is simple in structure, compact, reliable, fault rate is low.
Figure is a main TV structure schematic diagram of the present invention.
Embodiments of the invention are described in detail in conjunction with the accompanying drawings: the port of export of its compressor 10 is by heat exchanger 3, throttle part 4 links to each other with the entrance point of fan coil 5, the magnetic valve 2 other two ends that are connected to throttle part 4, compressor 10 entrance points are by heat exchanger 7, throttle part 6 links to each other with the port of export of fan coil 5, magnetic valve 9 is connected between the primary side port of export of the entrance point of throttle part 6 and heat exchanger 7, described heat exchanger 3,7 secondary side also is provided with water circulation pipe, the secondary side of its heat exchanger 7 passes through water pipe, the secondary side of valve 13 and heat exchanger 3, thermal storage water tank 1 links to each other, and which is provided with feed pipe 11; Another secondary side of heat exchanger 7 links to each other with another secondary side of heat exchanger 3 and thermal storage water tank 1 bottom by water pipe, tubing pump 8, valve 14, tubing pump 15, return pipe 12 is located on the pipeline between tubing pump 8 and the valve 14, and thermal storage water tank 1 is provided with heat supply water pipe 16.Described throttle part the 4, the 6th, capillary or expansion valve.
Be the work of controlling throttle part 4,6 by bypass solenoid valve 2,9 when the present invention uses, the work that bypass solenoid valve is controlled throttle part by Push And Release whether.The primary side of heat exchanger 3,7 is a refrigerant, and secondary side is a water.It is in cooling worker timing, water system valve 13,14 is closed, tubing pump 15 is used to the domestic water that circulates, tubing pump 8 is used for the circulation of chilled water, and magnetic valve 2 leaves, magnetic valve 9 closes, throttle part 6 work, heat exchanger 7 becomes refrigeration coil, heat exchanger 3 becomes heating coil pipe, can be used to reclaim condensation waste heat, the heating domestic water; When the heat supply operating mode, water system valve 13,14 is opened, and tubing pump 8 stops, tubing pump 15 operations are used for the water circulation heating in indoor heating water and the water storage tank 1, and magnetic valve 2 closes, and magnetic valve 9 leaves, throttle part 4 work this moment, heat exchanger 3 becomes heating coil pipe, and fan coil 5 becomes evaporimeter; When the defrosting operating mode, magnetic valve 2 leaves, and magnetic valve 9 closes, and heat exchanger 3, fan coil 5 are heating coil pipe, the blower fan stall, and simultaneously to indoor heating and defrosting, heat exchanger 7 is an evaporimeter, relies on the refrigerant in intrasystem heat of vaporization heat exchanger 7 coil pipes.Power operation when this moment, compressor 10 was still with normal heat supply, valve 13,14 is opened in this process grey water system, and tubing pump 8 stops, and tubing pump 15 operations are given indoor heating and heat exchanger 7 heat supplies, simultaneously with the sweat cooling medium.