CN106225311A - A kind of condensation heat recovery type air source solar energy coupling heat pump air conditioning and water heating system - Google Patents

Abstract

A condensing heat recovery type air source-solar coupled heat pump air conditioning hot water system. The invention relates to a hot water system. It will cause thermal pollution in the city. The direct expansion solar heat pump hot water system has only heating function, no cooling function, and is greatly affected by climatic conditions. It has a great impact, and the timeliness and reliability of heating are relatively low. It includes compressors, indoor units, four-way valves, outdoor units, gas-liquid separators, plate heat exchangers, capillary tubes, and double-pipe flat solar heat collectors. device, water tank, water pump, electric three-way valve, electric heater, check valve, the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the fifth solenoid valve, the sixth solenoid valve, the The seventh solenoid valve and the eighth solenoid valve belong to the field of thermal energy conversion.

Description

A Condensation Heat Recovery Type Air Source-Solar Coupled Heat Pump Air Conditioning and Hot Water System

technical field

The invention relates to a hot water system, in particular to an air source-solar coupling heat pump air-conditioning and hot water system with condensation heat recovery.

Background technique

Existing household heating, cooling and hot water heating systems with energy-saving and environmental protection benefits mainly include air source heat pump air-conditioning hot water system, direct expansion solar heat pump hot water system, and solar direct production hot water system. Both systems have obvious defects in practical application:

1. The outdoor unit of the air-source heat pump air-conditioning and hot water system is prone to frost in an environment with high relative humidity and low temperature. When the frost layer reaches a certain level, its heating capacity will be severely reduced. For a long time, frost prevention or defrosting Both are extremely difficult problems for air source heat pumps; at the same time, when applied in severe cold areas, the performance of air source heat pumps will be greatly weakened, seriously affecting the reliability and efficiency of heating (water); general air source heat pump air conditioning systems have no condensation Heat recovery not only leads to heat waste, but also causes urban thermal pollution.

2. The direct expansion solar heat pump hot water system only has heating function, no cooling function, and is greatly affected by climate conditions.

3. The hot water system directly produced by solar energy only has a heating function and has no cooling function. It is greatly affected by climate conditions, and the timeliness and reliability of heating are relatively low; and when it is used in cold regions, the antifreeze of the system is a problem .

4. At present, the above three systems are basically separated. Generally, only a certain type of system is used for household use, and the energy utilization efficiency, operation reliability and guarantee rate of heating and cooling of a single system are very limited. These inherent defects are also the biggest bottlenecks in the popularization and application of these systems.

Contents of the invention

The present invention solves the problem that the air source heat pump air conditioning system in the prior art does not have condensation heat recovery, which not only leads to heat waste, but also causes urban heat pollution. The direct expansion solar heat pump hot water system only has a heating function, no cooling function, and is affected by Conditions have a great influence. The direct solar hot water production system also has only heating function, no cooling function. It is greatly affected by climate conditions, and the timeliness and reliability of heating are relatively low, so as to provide a condensing heat recovery type air Source-solar coupled heat pump air conditioning hot water system.

The technical scheme that the present invention takes for solving the above-mentioned problem is: it comprises compressor, indoor unit, four-way valve, outdoor unit, gas-liquid separator, plate heat exchanger, capillary tube, double-pipe flat solar heat collector, water tank, Water pump, electric three-way valve, electric heater, check valve, first solenoid valve, second solenoid valve, third solenoid valve, fourth solenoid valve, fifth solenoid valve, sixth solenoid valve, seventh solenoid valve, The eighth solenoid valve, the first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the fifth pipeline, the sixth pipeline, the seventh pipeline, the eighth pipeline, the ninth pipeline, The tenth line, the eleventh line, the twelfth line, the thirteenth line, the fourteenth line, the fifteenth line, the sixteenth line, the seventeenth line, the eighteenth line pipeline, nineteenth pipeline, twentieth pipeline, twenty-first pipeline, twenty-second pipeline, twenty-third pipeline, twenty-fourth pipeline, twenty-fifth pipeline, The twenty-sixth pipeline and the twenty-seventh pipeline; one port of the compressor communicates with a port of the gas-liquid separator through the thirteenth pipeline, and the other port of the gas-liquid separator communicates with the gas-liquid separator through the twelfth pipeline. The first port of the four-way valve is connected, the second port of the four-way valve is connected with the first port of the plate heat exchanger through the twenty-first pipeline, and the second port of the plate heat exchanger is connected with the first port through the fifteenth pipeline. The six solenoid valves are connected, and the sixth solenoid valve is connected with the other port of the compressor through the fourteenth pipeline, one end of the fifth solenoid valve is connected with one end of the sixteenth pipeline, and the other end of the fifth solenoid valve is connected with the One end of the twenty-fifth pipeline is connected, and the other end of the sixteenth pipeline is connected with the twenty-first pipeline, the other end of the twenty-fifth pipeline is connected with the fourteenth pipeline, and the third of the four-way valve The port communicates with one end of the seventh solenoid valve through the first pipeline, the other end of the seventh solenoid valve communicates with one port of the indoor unit through the second pipeline, and the other port of the indoor unit communicates with one end of the capillary tube through the fourth pipeline. The other end of the capillary communicates with one end of the second solenoid valve through the fifth pipeline, the other end of the second solenoid valve communicates with the first port of the double-pipe flat solar collector through the sixth pipeline, and the eighth electromagnetic valve One end of the valve communicates with one end of the third pipeline, the other end of the eighth solenoid valve communicates with one end of the twenty-sixth pipeline, the other end of the third pipeline communicates with the fourth pipeline, and the twenty-sixth pipeline The other end of the plate heat exchanger is connected with the first pipeline, the third port of the plate heat exchanger is connected with one end of the seventeenth pipeline, the other end of the seventeenth pipeline is connected with the water tank, and the water tank is connected with the external tap water supply pipe, and the electric heating The heat exchanger is arranged in the water tank, the fourth port of the plate heat exchanger communicates with the first port of the electric three-way valve through the twentieth pipeline, and the second port of the electric three-way valve communicates with one end of the water pump through the nineteenth pipeline , the other end of the water pump communicates with the water tank through the eighteenth pipeline, the third port of the electric three-way valve communicates with the fourth port of the double-pipe flat solar collector through the twenty-fourth pipeline, and the double-pipe flat solar collector The third port of the heat collector communicates with the seventeenth pipeline through the twenty-third pipeline, the fourth port of the four-way valve communicates with one end of the outdoor unit through the eleventh pipeline, and the other end of the outdoor unit through the tenth pipeline The pipeline communicates with one end of the third solenoid valve, and the other end of the third solenoid valve passes through the first The seven pipelines communicate with one end of the first solenoid valve, the other end of the first solenoid valve communicates with the fifth pipeline through the ninth pipeline, and the second port of the double-pipe flat solar collector communicates with the fifth pipeline through the eighth pipeline. The seven pipelines are connected, one end of the fourth solenoid valve is connected with one end of the twenty-second pipeline, the other end of the fourth solenoid valve is connected with one end of the twenty-seventh pipeline, and the other end of the twenty-second pipeline is connected with The eleventh pipeline is connected, and the other end of the twenty-seventh pipeline is connected with the seventh pipeline.

The beneficial effects of the present invention are:

This system realizes the integration of household heat pump air conditioner, solar heat pump and solar direct hot water system. Compared with the traditional single air source (or solar) heat pump (air conditioner) hot water system, it has the following obvious advantages:

The system simultaneously realizes the utilization of two renewable energy sources, air energy and solar energy, and the benefits of energy saving and environmental protection are more prominent.

The integrated coupling of multiple systems can not only give full play to the advantages of each single system, but also overcome the defects of a single system through the matching and complementarity between different systems, effectively improving the system's energy utilization efficiency, operational reliability and stability, and heating (refrigeration) ) guarantee rate, but also can expand the scope of application of the system.

On the one hand, air-conditioning condensation heat recovery realizes waste heat utilization and reduces heat waste; on the other hand, it reduces urban thermal pollution to a certain extent.

The new double-pipe solar collector is suitable for water and refrigerant requirements under different working conditions. It can not only realize the perfect synthesis of direct expansion solar heating and solar direct hot water heating, but also can operate by switching refrigerants. Solve the problem of antifreeze in cold climates and significantly improve the utilization efficiency of solar energy.

This system can realize the above-mentioned various operation modes, centralized control, and convenient operation, which can meet the needs of users for heating, cooling and hot water production under different seasons, different time periods, and different climate conditions. The timeliness and reliability of the system excellent.

Description of drawings

Fig. 1 is a schematic diagram of the system of the present invention, Fig. 2 is a front view of a double-pipe flat solar heat collector 8, and Fig. 3 is a top view of Fig. 2 .

detailed description

Specific embodiment 1: This embodiment is described in conjunction with Fig. 1-Fig. 3. The condensation heat recovery type air source-solar coupling heat pump air-conditioning and hot water system described in this embodiment includes a compressor 1, an indoor unit 2, a four-way Valve 3, outdoor unit 4, gas-liquid separator 5, plate heat exchanger 6, capillary tube 7, double-pipe flat solar collector 8, water tank 9, water pump 10, electric three-way valve 11, electric heater 12, stop Return valve 13, first solenoid valve F1, second solenoid valve F2, third solenoid valve F3, fourth solenoid valve F4, fifth solenoid valve F5, sixth solenoid valve F6, seventh solenoid valve F7, eighth solenoid valve F8, the first pipeline 21, the second pipeline 22, the third pipeline 23, the fourth pipeline 24, the fifth pipeline 25, the sixth pipeline 26, the seventh pipeline 27, the eighth pipeline 28, Ninth pipeline 29, tenth pipeline 30, eleventh pipeline 31, twelfth pipeline 32, thirteenth pipeline 33, fourteenth pipeline 34, fifteenth pipeline 35, sixteenth pipeline Pipeline 36, seventeenth pipeline 37, eighteenth pipeline 38, nineteenth pipeline 39, twentieth pipeline 40, twenty-first pipeline 41, twenty-second pipeline 42, second The thirteenth pipeline 43, the twenty-fourth pipeline 44, the twenty-fifth pipeline 45, the twenty-sixth pipeline 46 and the twenty-seventh pipeline 47; one port of the compressor 1 passes through the thirteenth pipeline 33 communicates with one port of the gas-liquid separator 5, the other port of the gas-liquid separator 5 communicates with the first port of the four-way valve 3 through the twelfth pipeline 32, and the second port of the four-way valve 3 passes through the second The eleventh pipeline 41 communicates with the first port of the plate heat exchanger 6, the second port of the plate heat exchanger 6 communicates with the sixth electromagnetic valve F6 through the fifteenth pipeline 35, and the sixth electromagnetic valve F6 communicates through the tenth The fourth pipeline 34 communicates with the other port of the compressor 1, one end of the fifth electromagnetic valve F5 communicates with one end of the sixteenth pipeline 36, and the other end of the fifth electromagnetic valve F5 communicates with one end of the twenty-fifth pipeline 45 and the other end of the sixteenth pipeline 36 communicates with the twenty-first pipeline 41, the other end of the twenty-fifth pipeline 45 communicates with the fourteenth pipeline 34, and the third port of the four-way valve 3 passes through The first pipeline 21 communicates with one end of the seventh solenoid valve F7, the other end of the seventh solenoid valve F7 communicates with one port of the indoor unit 2 through the second pipeline 22, and the other port of the indoor unit 2 passes through the fourth pipeline 24 communicates with one end of the capillary 7, and the other end of the capillary 7 communicates with one end of the second electromagnetic valve F2 through the fifth pipeline 25, and the other end of the second electromagnetic valve F2 communicates with the double-pipeline flat panel solar collector through the sixth pipeline 26. The first port of the heater 8 is communicated, one end of the eighth electromagnetic valve F8 is communicated with one end of the third pipeline 23, the other end of the eighth electromagnetic valve F8 is communicated with one end of the twenty-sixth pipeline 46, and the third pipeline The other end of 23 communicates with the fourth pipeline 24, the other end of the twenty-sixth pipeline 46 communicates with the first pipeline 21, the third port of the plate heat exchanger 6 communicates with one end of the seventeenth pipeline 37, The other end of the seventeenth pipeline 37 communicates with the water tank 9, and the water tank 9 communicates with the external tap water supply pipe, and the electric heater 12 is arranged on the water tank 9, the fourth port of the plate heat exchanger 6 communicates with the first port of the electric three-way valve 11 through the twentieth pipeline 40, and the second port of the electric three-way valve 11 communicates with the water pump 10 through the nineteenth pipeline 39 The other end of the water pump 10 communicates with the water tank 9 through the eighteenth pipeline 38, and the third port of the electric three-way valve 11 communicates with the first port of the double-pipeline flat solar collector 8 through the twenty-fourth pipeline 44. The four ports are connected, the third port of the double-pipeline flat solar collector 8 is communicated with the seventeenth pipeline 37 through the twenty-third pipeline 43, and the fourth port of the four-way valve 3 is connected with the eleventh pipeline 31. One end of the outdoor unit 4 is connected, the other end of the outdoor unit 4 is connected with one end of the third solenoid valve F3 through the tenth pipeline 30, and the other end of the third solenoid valve F3 is connected with the first solenoid valve F1 through the seventh pipeline 27. One end communicates, the other end of the first solenoid valve F1 communicates with the fifth pipeline 25 through the ninth pipeline 29, and the second port of the double-pipe flat solar collector 8 communicates with the seventh pipeline 27 through the eighth pipeline 28 One end of the fourth solenoid valve F4 communicates with one end of the twenty-second pipeline 42, the other end of the fourth solenoid valve F4 communicates with one end of the twenty-seventh pipeline 47, and the other end of the twenty-second pipeline 42 One end communicates with the eleventh pipeline 31 , and the other end of the twenty-seventh pipeline 47 communicates with the seventh pipeline 27 .

Specific embodiment two: This embodiment is described in conjunction with Fig. 1-Fig. The return valve 13 is in communication with the external tap water replenishment pipe, and other components and connections are the same as those in Embodiment 1.

Specific embodiment three: This embodiment is described in conjunction with Fig. 1-Fig. 3, a condensing heat recovery type air source-solar coupling heat pump air conditioning and hot water system described in this embodiment, the double-pipe flat solar collector 8 includes an outer box Body 8-1, water connection pipe 8-3, water connection pipe 8-4, refrigerant connection pipe 8-5, refrigerant connection pipe 8-6, heat insulation layer 8-7 and multiple heat absorbing plates 8 -2, the heat absorbing plate 8-2 includes a water pipe 8-8, a plate body 8-10 and two refrigerant pipes 8-9, a water pipe 8-8 is vertically arranged on the plate body 8-10, and the water pipe 8-8 Located on the center line of the plate body 8-10, forming a plate-wing structure, two refrigerant tubes 8-9 are symmetrically arranged on the plate body 8-10, and the refrigerant tubes 8-9 are hot-rolled and inflated fixed on the plate body 8-10 to form a tube plate structure, a plurality of heat absorbing plates 8-2 are arranged side by side, and the top of the water pipe 8-8 on each heat absorbing plate 8-2 is connected with the water connecting pipe 8-2 3 sealed and connected, the bottom of each heat absorbing plate 8-2 upper water pipe 8-8 is sealed and connected with the waterway down pipe 8-4, and the top of the refrigerant pipe 8-9 on each heat absorbing plate 8-2 is connected with The upper refrigerant pipe 8-5 is sealed and communicated, the bottom end of the refrigerant pipe 8-9 on each heat absorbing plate 8-2 is sealed and communicated with the refrigerant lower pipe 8-6, and the double-pipe flat solar collector 8 The first port of the first port is in sealing communication with the refrigerant downlink pipe 8-6, the second port of the double-pipe flat solar collector 8 is in sealing communication with the refrigerant uplink pipe 8-5, and the double-pipe flat solar collector 8 is in sealing communication. The third port is in sealing communication with the waterway connecting pipe 8-3, the fourth port of the double-pipeline flat solar collector 8 is in sealing communication with the waterway downlinking pipe 8-4, and the heat insulation layer 8-7 is arranged on the outer box body 8-1 Inside and between the heat absorbing plate 8-2 and the inner wall of the outer box 8-1. Other components and connections are the same as those in the first embodiment.

Specific Embodiment 4: This embodiment is described in conjunction with FIGS. 1-3 . In this embodiment, a condensation heat recovery type air source-solar coupling heat pump air-conditioning and hot water system is provided on a side wall of the outer box 8-1. There is a transparent cover plate 8-11, and the heat absorbing plate 8-2 is arranged near the side of the transparent cover plate 8-11. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 3.

working principle

Air source heat pump heating: close the water system, close the second solenoid valve F2, the fourth solenoid valve F4, the sixth solenoid valve F6 and the eighth solenoid valve F8, open the first solenoid valve F1, the third solenoid valve F3, and the fifth solenoid valve F5 and seven solenoid valves F7, the high-temperature and high-pressure refrigerant coming out of the compressor 1 flows to the indoor unit 2 to release heat through the plate exchange bypass pipe through the four-way valve 3, and absorbs heat in the outdoor unit 4 after being throttled by the capillary tube 7, and then Return to the compressor 1 through the four-way valve 3 and the gas-liquid separator 5 .

Solar heat pump heating: close the water loop, close the first solenoid valve F1, the third solenoid valve F3, the sixth solenoid valve F6 and the eighth solenoid valve F8, open the second solenoid valve F2, the fourth solenoid valve F4, and the fifth solenoid valve F5 And the seventh solenoid valve F7, the high-temperature and high-pressure refrigerant from the compressor 1 flows through the fifth solenoid valve F5 through the four-way valve 3 to the indoor unit 2 to release heat, and after being throttled by the capillary 7, it flows into the double-pipe flat solar collector 8, and then return to the compressor 1 through the four-way valve 3 and the gas-liquid separator 5.

Air source-solar heat pump combined heating: close the water loop, close the first solenoid valve F1, the fourth solenoid valve F4, the sixth solenoid valve F6 and the eighth solenoid valve F8, open the second solenoid valve F2, the third solenoid valve F3, The fifth solenoid valve F5 and the seventh solenoid valve F7, the high-temperature and high-pressure refrigerant coming out of the compressor 1 flows through the fifth solenoid valve F5 and the four-way valve to the indoor unit 2 for heat release and heating. The pipeline flat plate solar heat collector 8 and the outdoor unit 4 absorb heat, and then return to the compressor 1 through the four-way valve 3 and the gas-liquid separator 5 .

Air source heat pump heating water: turn on the water pump, the electric three-way valve 11 controls the water flow to the plate, close the second solenoid valve F2, the fourth solenoid valve F4, the fifth solenoid valve F5 and the seventh solenoid valve F7, and turn on the first solenoid valve Valve F1, the third solenoid valve F3, the sixth solenoid valve F6 and the eighth solenoid valve F8, the high temperature and high pressure refrigerant coming out of the compressor 1 transfers heat to water through the plate heat exchanger 6, and then flows through the four-way valve 3 The bypass pipe of the indoor unit 2 flows through the outdoor unit 4 to absorb heat after being throttled by the capillary tube 7 , and then returns to the compressor 1 through the four-way valve 3 and the gas-liquid separator 5 .

Solar heat pump heating water: turn on the water pump, the electric three-way valve 11 controls the water flow to the plate, close the first solenoid valve F1, the third solenoid valve F3, the fifth solenoid valve F5 and the seventh solenoid valve F7, and open the second solenoid valve F2 , the fourth solenoid valve F4, the sixth solenoid valve F6 and the eighth solenoid valve F8, the high-temperature and high-pressure refrigerant coming out of the compressor 1 transfers heat to water through the plate heat exchanger 6, and then flows through the four-way valve 3 to the indoor unit 2. The bypass pipe, throttling by the capillary 7, flows through the double-pipe flat solar collector 8 to absorb heat, and then returns to the compressor 1 through the four-way valve 3 and the gas-liquid separator 5.

Combined air source-solar heat pump hot water: turn on the water pump, the electric three-way valve 11 controls the water flow to the plate, close the first solenoid valve F1, the fourth solenoid valve F4, the fifth solenoid valve F5 and the seventh solenoid valve F7, and open the third solenoid valve The second solenoid valve F2, the third solenoid valve F3, the sixth solenoid valve F6 and the eighth solenoid valve F8, the high-temperature and high-pressure refrigerant from the compressor transfers heat to water through the plate heat exchanger 6, and then flows through the four-way valve 3 Pass through the bypass pipe of the indoor unit 2, throttle through the capillary tube 7, flow through the double-pipe flat solar collector 8 and the outdoor unit 4 to absorb heat, and then return to the compressor 1 through the four-way valve 3 and the gas-liquid separator 5.

Air source heat pump heating and hot water production: turn on the water pump, the electric three-way valve 11 controls the water flow to the plate, close the second solenoid valve F2, the fourth solenoid valve F4, the fifth solenoid valve F5, and the eighth solenoid valve F8, Open the first solenoid valve F1, the third solenoid valve F3, the sixth solenoid valve F6 and the seventh solenoid valve F7, the high-temperature and high-pressure refrigerant coming out of the compressor transfers heat to water through the plate heat exchanger 6, and then passes through the four-way valve. 3 flows to the indoor unit 2 to release heat, and then flows through the outdoor unit 4 to absorb heat after being throttled by the capillary 7, and then returns to the compressor 1 through the four-way valve 3 and the gas-liquid separator 5.

Solar heat pump heating and hot water production: turn on the water pump, the electric three-way valve 11 controls the water flow to the plate, close the first solenoid valve F1, the third solenoid valve F3, the fifth solenoid valve F5 and the eighth solenoid valve F8, open the second Solenoid valve F2, fourth solenoid valve F4, sixth solenoid valve F6 and seventh solenoid valve F7, the high-temperature and high-pressure refrigerant coming out of the compressor transfers heat to water through the plate heat exchanger 6, and then flows into the room through the four-way valve 3 The machine 2 releases heat, and after being throttled by the capillary 7, it flows through the double-pipe flat solar heat collector 8 to absorb heat, and then returns to the compressor 1 through the four-way valve 3 and the gas-liquid separator 5 .

Air source-solar heat pump combined heating and hot water production: turn on the water pump, the electric three-way valve 11 controls the water flow to the plate, close the first solenoid valve F1, the fourth solenoid valve F4, the fifth solenoid valve F5 and the eighth solenoid valve F8 , open the second solenoid valve F2, the third solenoid valve F3, the sixth solenoid valve F6 and the seventh solenoid valve F7, the high-temperature and high-pressure refrigerant coming out of the compressor transfers heat to water through the plate heat exchanger 6, and then passes through the four-way The valve 3 flows to the indoor unit 2 to release heat, throttles through the capillary 7, flows through the double-pipe flat solar collector 8 and the outdoor unit 4 to absorb heat, and then returns to the compressor 1 through the four-way valve 3 and the gas-liquid separator 5 .

Air source heat pump refrigeration: close the water system, close the second solenoid valve F2, the fourth solenoid valve F4, the sixth solenoid valve F6 and the eighth solenoid valve F8, open the first solenoid valve F1, the third solenoid valve F3, and the fifth solenoid valve F5 and seven solenoid valves F7, the high-temperature and high-pressure refrigerant coming out of the compressor flows through the fifth solenoid valve F5 through the four-way valve 3 to the outdoor unit 4 to release heat, and after being throttled by the capillary 7, it absorbs heat in the indoor unit 2, and then passes through the four-way valve 3 to absorb heat in the indoor unit 2. Pass valve 3 and gas-liquid separator 5 return to compressor 1.

Air source heat pump cooling and hot water production: turn on the water pump, the electric three-way valve 11 controls the water flow to the plate, close the second solenoid valve F2, the fifth solenoid valve F5 and the eighth solenoid valve F8, open the first solenoid valve F1, the second solenoid valve The sixth solenoid valve F6 and the seventh solenoid valve F7, if the water temperature is too high to fully absorb the condensation heat, then close the fourth solenoid valve F4 and open the third solenoid valve F3, otherwise close the third solenoid valve F3 and open the fourth solenoid valve F4, the high-temperature and high-pressure refrigerant coming out of the compressor transfers heat to the water through the plate heat exchanger 6. After passing through the four-way valve 3, if the water temperature is high and cannot completely absorb the condensation heat, it will flow to the outdoor unit 4 to continue to release heat. The outdoor fan is turned on. In order to maintain the stable and efficient operation of the system, otherwise, the bypass pipe of the outdoor unit 4 flows through the outdoor fan to close, and after being throttled by the capillary tube 7, it flows to the indoor unit 2 to absorb heat, and then returns to the compressor 1 through the four-way valve 3 and the gas-liquid separator 5 .

Air source heat pump refrigeration and solar energy direct production of hot water: This mode is carried out under the condition that the high water temperature affects the performance of the heat pump and the solar radiation is sufficient, and the water loop and the refrigerant loop operate simultaneously but separately. Turn on the water pump, and the electric three-way valve 11 controls the water flow to the solar collector to absorb heat, and then flows back to the water tank; close the second solenoid valve F2, the fourth solenoid valve F4, the sixth solenoid valve F6 and the eighth solenoid valve F8, and open the second solenoid valve F2, the fourth solenoid valve F4, the sixth solenoid valve F6 and the eighth solenoid valve F8 A solenoid valve F1, a third solenoid valve F3, a fifth solenoid valve F5, and a seventh solenoid valve F7. The high-temperature and high-pressure refrigerant coming out of the compressor flows through the fifth solenoid valve F5 and the four-way valve 3 to the outdoor unit 4 to release heat. After being throttled by the capillary 7, it flows to the indoor unit 2 to absorb heat, and then returns to the compressor 1 through the four-way valve 3 and the gas-liquid separator 5 .

Solar energy directly produces hot water: the refrigerant loop is closed, the water pump is turned on, and the electric three-way valve 11 controls water to flow to the solar heat collector to absorb heat, and then flows back to the water tank.

Claims (4)

1. A condensation heat recovery type air source-solar coupling heat pump air-conditioning and hot water system is characterized in that: it includes a compressor (1), an indoor unit (2), a four-way valve (3), an outdoor unit (4), Gas-liquid separator (5), plate heat exchanger (6), capillary tube (7), double-pipe flat solar collector (8), water tank (9), water pump (10), electric three-way valve (11) , electric heater (12), check valve (13), first solenoid valve (F1), second solenoid valve (F2), third solenoid valve (F3), fourth solenoid valve (F4), fifth solenoid valve Valve (F5), sixth solenoid valve (F6), seventh solenoid valve (F7), eighth solenoid valve (F8), first pipeline (21), second pipeline (22), third pipeline ( 23), the fourth pipeline (24), the fifth pipeline (25), the sixth pipeline (26), the seventh pipeline (27), the eighth pipeline (28), the ninth pipeline (29) , the tenth pipeline (30), the eleventh pipeline (31), the twelfth pipeline (32), the thirteenth pipeline (33), the fourteenth pipeline (34), the fifteenth pipeline (35), the sixteenth pipeline (36), the seventeenth pipeline (37), the eighteenth pipeline (38), the nineteenth pipeline (39), the twentieth pipeline (40), the The twenty-first pipeline (41), the twenty-second pipeline (42), the twenty-third pipeline (43), the twenty-fourth pipeline (44), the twenty-fifth pipeline (45), the The twenty-sixth pipeline (46) and the twenty-seventh pipeline (47); a port of the compressor (1) communicates with a port of the gas-liquid separator (5) through the thirteenth pipeline (33), and the gas Another port of the liquid separator (5) communicates with the first port of the four-way valve (3) through the twelfth pipeline (32), and the second port of the four-way valve (3) passes through the twenty-first pipeline ( 41) Communicate with the first port of the plate heat exchanger (6), the second port of the plate heat exchanger (6) communicates with the sixth electromagnetic valve (F6) through the fifteenth pipeline (35), and the sixth electromagnetic valve The valve (F6) communicates with the other port of the compressor (1) through the fourteenth pipeline (34), one end of the fifth electromagnetic valve (F5) communicates with one end of the sixteenth pipeline (36), and the fifth electromagnetic valve The other end of the valve (F5) communicates with one end of the twenty-fifth pipeline (45), and the other end of the sixteenth pipeline (36) communicates with the twenty-first pipeline (41), and the twenty-fifth pipeline The other end of the road (45) communicates with the fourteenth pipeline (34), the third port of the four-way valve (3) communicates with one end of the seventh solenoid valve (F7) through the first pipeline (21), and the seventh The other end of the solenoid valve (F7) communicates with one port of the indoor unit (2) through the second pipeline (22), and the other port of the indoor unit (2) communicates with the capillary (7) through the fourth pipeline (24). One end communicates, the other end of the capillary (7) communicates with one end of the second electromagnetic valve (F2) through the fifth pipeline (25), and the other end of the second electromagnetic valve (F2) communicates with the double valve through the sixth pipeline (26). The first port of the pipeline flat solar collector (8) is connected, and the eighth electromagnetic valve (F8) One end communicates with one end of the third pipeline (23), the other end of the eighth solenoid valve (F8) communicates with one end of the twenty-sixth pipeline (46), and the other end of the third pipeline (23) communicates with the fourth The pipeline (24) is connected, the other end of the twenty-sixth pipeline (46) is connected with the first pipeline (21), the third port of the plate heat exchanger (6) is connected with the seventeenth pipeline (37) One end is connected, the other end of the seventeenth pipeline (37) is connected with the water tank (9), the water tank (9) is connected with the external tap water supply pipe, the electric heater (12) is arranged in the water tank (9), and the plate heat exchanger The fourth port of (6) communicates with the first port of the electric three-way valve (11) through the twentieth pipeline (40), and the second port of the electric three-way valve (11) passes through the nineteenth pipeline (39) It is connected with one end of the water pump (10), the other end of the water pump (10) is connected with the water tank (9) through the eighteenth pipeline (38), and the third port of the electric three-way valve (11) is connected through the twenty-fourth pipeline (44) is communicated with the fourth port of the double-pipeline flat solar collector (8), and the third port of the double-pipe flat solar collector (8) is connected with the seventeenth through the twenty-third pipeline (43). The pipeline (37) is connected, the fourth port of the four-way valve (3) is connected with one end of the outdoor unit (4) through the eleventh pipeline (31), and the other end of the outdoor unit (4) is connected through the tenth pipeline ( 30) Communicate with one end of the third solenoid valve (F3), the other end of the third solenoid valve (F3) communicates with one end of the first solenoid valve (F1) through the seventh pipeline (27), and the first solenoid valve (F1 ) is communicated with the fifth pipeline (25) through the ninth pipeline (29), and the second port of the double-pipe flat solar collector (8) is connected with the seventh pipeline through the eighth pipeline (28) (27) connected, one end of the fourth electromagnetic valve (F4) communicates with one end of the twenty-second pipeline (42), the other end of the fourth electromagnetic valve (F4) communicates with one end of the twenty-seventh pipeline (47) The other end of the twenty-second pipeline (42) communicates with the eleventh pipeline (31), and the other end of the twenty-seventh pipeline (47) communicates with the seventh pipeline (27). 2. A condensing heat recovery type air source-solar coupled heat pump air-conditioning and hot water system according to claim 1, characterized in that: it also includes a check valve (13), and the water tank (9) passes through the check valve (13) It is connected with the external tap water supply pipe. 3. A condensing heat recovery type air source-solar coupling heat pump air conditioning and hot water system according to claim 1, characterized in that: the double-pipe flat solar collector (8) includes an outer box (8-1), Water connection pipe (8-3), water connection pipe (8-4), refrigerant connection pipe (8-5), refrigerant connection pipe (8-6), heat insulation layer (8-7) and multiple A heat absorbing plate (8-2), heat absorbing plate (8-2) comprises water pipe (8-8), plate body (8-10) and two refrigerant pipes (8-9), plate body (8- 10) A water pipe (8-8) is vertically arranged on the top, and the water pipe (8-8) is located at the center line of the plate body (8-10), and two refrigerant pipes are symmetrically arranged on the plate body (8-10) (8-9), a plurality of heat-absorbing plates (8-2) are arranged side by side, and the top of each heat-absorbing plate (8-2) upper water pipe (8-8) is connected with the water pipe (8-3) Sealed communication, the bottom end of the upper water pipe (8-8) of each heat absorption plate (8-2) is sealed and communicated with the lower water pipe (8-4), and the refrigerant pipe on each heat absorption plate (8-2) The tops of (8-9) are all in sealing communication with the refrigerant upper connection pipe (8-5), and the bottom ends of the refrigerant pipes (8-9) on each heat absorbing plate (8-2) are all connected with the refrigerant lower connection pipe (8-6) is sealed and communicated, the first port of the double-pipe flat solar collector (8) is sealed and connected with the refrigerant downcomer (8-6), and the second port of the double-pipe flat solar collector (8) The port is in sealing communication with the refrigerant uplink pipe (8-5), the third port of the double-pipe flat solar collector (8) is in sealing communication with the water connection pipe (8-3), and the double-pipe flat solar collector The fourth port of the device (8) is sealed and communicated with the water pipe (8-4), and the heat insulation layer (8-7) is arranged in the outer box (8-1) and is located between the heat absorbing plate (8-2) and the outer Between the inner walls of the box (8-1). 4. A condensing heat recovery type air source-solar coupled heat pump air-conditioning and hot water system according to claim 3, characterized in that: a side wall of the outer box (8-1) is provided with a transparent cover plate (8- 11), and the heat absorbing plate (8-2) is arranged near the side of the transparent cover plate (8-11).