CN203908106U - Cooling and heating water loops for heat pumps and hot water systems - Google Patents

Abstract

The utility model discloses a heat pump and hot water system's refrigeration circuit belongs to air compression formula refrigeration air conditioner technical field. The utility model discloses a heat pump and hot water system's refrigerating circuit includes compressor (1), cross valve (2), vapour and liquid separator (15), the first ooff valve of air source branch road (16), air source heat exchanger (3), air source branch road second ooff valve (17), the first ooff valve of ice condensing branch road (18), check valve (14), ice condensing evaporator (13), ice condensing branch road second ooff valve (19), first expansion valve (4), air conditioner heat exchanger (5), second expansion valve (6), hot water heat exchanger (7), air conditioner heat exchanger ooff valve (8), hot water heat exchanger ooff valve (9) as an organic whole are connected in proper order through the refrigerant pipeline. Compared with the prior art, the utility model has the advantages of reliable performance, high operating efficiency, high energy utilization rate and little environmental heat pollution.

Description

Cooling and heating water loops for heat pumps and hot water systems

technical field

The invention belongs to the technical field of air compression refrigeration and air conditioning, and more specifically, belongs to a vapor compression and low-temperature heat source hybrid heat pump device system that utilizes energy in the air for refrigeration, heating and domestic hot water supply.

Background technique

The air-source heat pump air-conditioning device adopts a vapor compression refrigeration cycle system. The vapor compression refrigeration cycle system usually uses the low-grade energy in the outdoor atmosphere to provide thermal equipment for the air-conditioning system as a cold and heat source. At present, air-source heat pumps have been used in residential and commercial buildings. Has been widely used. The air source heat pump air conditioner includes a compressor, a gas-liquid separator, an air source heat exchanger, an air conditioner heat exchanger, and an intelligent controller. The intelligent controller automatically controls the main components and switches in the air source heat pump air conditioner.

The air source heat pump air conditioner can produce cold water and hot water, and use cold water or hot water as the medium to directly deliver cold or hot air to the room through the air conditioner terminal, and provide the required cold heat to the room to ensure the thermal comfort of the room. During the cooling operation in summer, the air source heat pump air conditioner needs to discharge a large amount of condensation heat to the outdoor air environment when it is operating for cooling the room, which will cause energy loss and environmental thermal pollution. When heating in winter, the working efficiency of the air source heat pump air conditioner decreases sharply. When the temperature drops to a certain level, the air source heat pump air conditioner can hardly work normally. Therefore, the use of air source heat pump air conditioners in low temperature areas in winter has poor economic benefits and Difficulty running etc.

If an air source heat pump air conditioner and a heat pump water heater are installed at the same time in a commercial building or a residential building, it will increase the overall equipment cost, operating cost and occupied space of the building. At the same time, the air source heat pump air conditioner and the heat pump water heater have the same working principle. How to combine the air source heat pump air conditioner and the heat pump water heater well to maximize the energy efficiency of the heat pump system has always been a major problem restricting this technical field. .

Contents of the invention

In order to effectively solve the above technical problems, the present invention provides a cooling and heating water loop of a heat pump and hot water system.

A refrigeration and hot water heating circuit of a heat pump and hot water system according to the present invention is characterized in that it includes a compressor, a four-way valve, a gas-liquid separator, and a first air source branch connected in sequence through refrigerant pipelines. Switching valve, air source heat exchanger, second switching valve of air source branch, first switching valve of freezing branch, check valve, freezing evaporator, second switching valve of freezing branch, first expansion valve, Air conditioner heat exchanger, second expansion valve, hot water heat exchanger, air conditioner heat exchanger switch valve, hot water heat exchanger switch valve; of which:

The four-way valve, the first switch valve of the air source branch, the second switch valve of the air source branch, the first switch valve of the freezing branch, the second switching valve of the freezing branch, The first expansion valve, the second expansion valve, the switch valve of the air conditioner heat exchanger and the switch valve of the hot water heat exchanger are respectively connected to an intelligent controller;

The intelligent controller controls the four-way valve to work in the heating mode, the intelligent controller controls the first on-off valve of the air source branch, and the second on-off valve of the air source branch to the open working state, and the intelligent controller Control the first on-off valve of the ice freezing branch and the second on-off valve of the ice freezing branch to be in the closed working state, the intelligent controller controls the first expansion valve to be in the open working state, and the intelligent controller controls The second expansion valve is in the open working state, the intelligent controller controls the switch valve of the air conditioner heat exchanger to be in the closed working state, and the intelligent controller controls the hot water heat exchanger switch valve to be in the open working state;

One side of the air-conditioning heat exchanger is provided with an air-conditioning water pump, and one side of the hot water heat exchanger is provided with a hot water pump, and the intelligent controller controls the air-conditioning water pump to be in a working state, and the intelligent controller The hot water pump is controlled to be in an on working state; the heat exchanging fan is provided on one side of the outdoor heat exchanger, and the intelligent controller controls the heat exchanging fan to be in an off or semi-open working state.

A refrigeration and hot water heating circuit of a heat pump and hot water system according to the present invention is characterized in that it includes a compressor, a four-way valve, a gas-liquid separator, and a first air source branch connected in sequence through refrigerant pipelines. Switching valve, air source heat exchanger, second switching valve of air source branch, first switching valve of freezing branch, check valve, freezing evaporator, second switching valve of freezing branch, first expansion valve, Air conditioner heat exchanger, second expansion valve, hot water heat exchanger, air conditioner heat exchanger switch valve, hot water heat exchanger switch valve; of which:

The four-way valve, the first switch valve of the air source branch, the second switch valve of the air source branch, the first switch valve of the freezing branch, the second switching valve of the freezing branch, The first expansion valve, the second expansion valve, the switch valve of the air conditioner heat exchanger and the switch valve of the hot water heat exchanger are respectively connected to an intelligent controller;

The intelligent controller controls the four-way valve to work in the heating mode, the intelligent controller controls the first on-off valve of the air source branch, and the second on-off valve of the air source branch to the closed working state, and the intelligent controller Control the first on-off valve of the ice freezing branch and the second on-off valve of the ice freezing branch to be in the open working state, the intelligent controller controls the first expansion valve to be in the open working state, and the intelligent controller controls The second expansion valve is in the open working state, the intelligent controller controls the switch valve of the air conditioner heat exchanger to be in the closed working state, and the intelligent controller controls the hot water heat exchanger switch valve to be in the open working state;

One side of the ice-condensing evaporator is provided with an ice-water pump, and the other side of the ice-condensing evaporator is provided with an ice-water separator, and the intelligent controller controls the ice-water pump and the ice-water separator It is closed working state.

The heat pump and hot water heating combination system of the present invention can adjust its working mode according to the change of the ambient temperature, and the intelligent controller which controls each part in the heat pump and hot water heating combination system can adjust the working mode of the system according to the change of the external environment temperature Switch to achieve different working purposes such as separate cooling, separate heating, separate domestic hot water and cooling, separate domestic hot water and heating, and separate domestic hot water.

When the obtained external temperature value is greater than the set temperature of the heat pump and hot water heating combined system, the intelligent controller will close the first switch valve of the freezing branch and the second switching valve of the freezing branch, and open the first switching valve of the air source branch. After the switch valve and the second switch valve of the air source branch, the air conditioner heat exchanger can effectively complete separate heating, separate domestic hot water production and heating, separate domestic hot water production after absorbing heat from the external environment.

When the obtained external temperature value is lower than the set temperature of the heat pump and hot water heating combined system, the intelligent controller will open the first switch valve of the freezing branch and the second switching valve of the freezing branch, and close the first switching valve of the air source branch. The on-off valve and the second on-off valve of the air source branch, after the deicing evaporator absorbs heat from the external environment, can effectively complete independent heating, independent domestic hot water production and heating, independent domestic hot water production.

When the obtained external temperature value is almost the same as the set temperature of the combined system of heat pump and hot water heating, the intelligent controller will open the first on-off valve of the freezing branch and the second on-off valve of the freezing branch, and open the air source at the same time The first switch valve of the branch circuit and the second switch valve of the air source branch circuit, the heat exchanger of the air conditioner and the freezing evaporator jointly absorb heat from the external environment, and can effectively complete common heating, common domestic hot water and heating , Co-system domestic hot water.

Compared with the prior art, the present invention can effectively realize separate cooling, separate heating, separate production of domestic hot water and cooling, separate production of domestic hot water and heating, separate production of domestic hot water, reliable performance, high operating efficiency, High energy utilization rate and little thermal pollution to the environment. Since the present invention adopts a dual-heat source heat pump, two heat sources can be switched or used at the same time according to the ambient temperature, so that the heat pump of the present invention can operate efficiently within a large temperature range, greatly improving the adaptability of the heat pump to the working environment. It effectively meets the actual use requirements in high-latitude low-temperature areas and obtains better energy-saving effects.

Description of drawings

Accompanying drawing 1 is the structural representation of the combination system of heat pump and hot water heating of the present invention;

Accompanying drawing 2 is the working flow chart of independent refrigeration of air conditioner heat exchanger of the present invention;

Accompanying drawing 3 is the working flow chart of heating independently of the air conditioner heat exchanger of the present invention;

Accompanying drawing 4 is the work flowchart of independent heating of deicing evaporator of the present invention;

Accompanying drawing 5 is the working flow chart of the mixed heating of the air conditioner heat exchanger and the freezing evaporator of the present invention;

Accompanying drawing 6 is the working flow chart of making domestic hot water separately by the air conditioner heat exchanger of the present invention;

Accompanying drawing 7 is the working flow chart of the working flow chart of making domestic hot water separately by deicing evaporator of the present invention;

Accompanying drawing 8 is the working flow chart of the working flow chart of domestic hot water mixed system of air conditioning heat exchanger and freezing evaporator of the present invention;

Accompanying drawing 9 is the working flow chart of the air conditioner heat exchanger of the present invention heating separately and making domestic hot water;

Accompanying drawing 10 is the work flow chart of the work flow chart of the independent heating and domestic hot water system of the deicing evaporator of the present invention;

Accompanying drawing 11 is the working flow chart of the working flow chart of the mixed heating and domestic hot water system of the air conditioner heat exchanger and the freezing evaporator of the present invention;

Accompanying drawing 12 is the working flow chart of the working flow chart of refrigeration and making domestic hot water of air conditioner heat exchanger of the present invention;

Accompanying drawing 13 is the working flow chart of the working flow chart of freezing and making domestic hot water of the deicing evaporator of the present invention.

Detailed ways

Fig. 1 is a structural schematic diagram of the heat pump and hot water heating combination system of the present invention, the heat pump and hot water heating combination system of the present invention includes a compressor 1, a four-way valve 2, and a gas-liquid separator 15 connected in sequence through refrigerant pipelines , the first switching valve 16 of the air source branch, the air source heat exchanger 3, the second switching valve 17 of the air source branch, the first switching valve 18 of the freezing branch, the check valve 14, the freezing evaporator 13, the freezing Ice branch second switch valve 19, first expansion valve 4, air conditioner heat exchanger 5, second expansion valve 6, hot water heat exchanger 7, air conditioner heat exchanger switch valve 8, hot water heat exchanger switch valve 9 ; Among them: compressor 1, four-way valve 2, first switching valve 16 of air source branch, second switching valve 17 of air source branch, first switching valve 18 of freezing branch, second switching valve of freezing branch 19. The first expansion valve 4, the second expansion valve 6, the switch valve 8 of the air conditioner heat exchanger and the switch valve 9 of the hot water heat exchanger are respectively connected to the intelligent controller, which can adopt embedded control system or modular control system.

One side of the air conditioner heat exchanger 5 is provided with an air conditioner water pump 11, one side of the hot water heat exchanger 7 is provided with a hot water pump 12; one side of the outdoor heat exchanger 3 is provided with a heat exchange fan 10; One side is provided with ice water pump 20, and the other side of ice condensation evaporator 13 is provided with ice water separator 21. The intelligent controller also controls the air-conditioning water pump 11, the hot water pump 12, the heat exchange fan 10, the ice water pump 20 and the ice water separator 21. The intelligent controller controls the aforementioned parts respectively to realize separate cooling, separate heating, separate domestic hot water and cooling, separate domestic hot water and heating, and separate domestic hot water production.

Fig. 2 is the working flow diagram of the independent cooling of the air-conditioning heat exchanger in the heat and high temperature environment of the present invention; the intelligent controller will close the first switching valve 18 of the freezing branch and the second switching valve 19 of the freezing branch, and open the first switching valve 19 of the freezing branch. One switch valve 16 and the second switch valve 17 of the air source branch, open the switch valve 8 of the air conditioner heat exchanger, close the switch valve 9 of the hot water heat exchanger, open the first expansion valve 4, close the second expansion valve 6, and turn on the air conditioner Water pump 11, close hot water pump 12, open heat exchanging fan 10. The intelligent controller controls the four-way valve 2 and then operates in refrigeration mode, so that a separate refrigeration cycle can be formed. The high-temperature and high-pressure gaseous refrigerant from the exhaust port of the compressor 1 flows into the air source through the four-way valve 2 and the gas-liquid separator 15. Heater 3 condenses into the air into a high-temperature and high-pressure liquid, and the refrigerant condensed into a high-temperature and high-pressure liquid passes through the first expansion valve 4 to become a low-temperature and low-pressure gas-liquid two-phase liquid, and the gas-liquid two-phase liquid refrigerant flows into the heat exchanger of the air conditioner 5 absorbs heat from the air-conditioning circulating water to achieve cooling purposes and evaporates into low-pressure gas, and the refrigerant in the low-pressure gas returns to the compressor 1 through the switch valve 8 and the four-way valve 2 of the air-conditioning heat exchanger. Through the aforementioned cycle, the air conditioner heat exchanger 5 can effectively complete cooling after releasing heat to the external environment.

Fig. 3 is the working flow diagram of the separate heating of the air conditioner heat exchanger of the present invention; the intelligent controller will close the first on-off valve 18 of the ice-condensing branch and the second on-off valve 19 of the ice-condensing branch, and open the first on-off valve of the air source branch 16 and the second switch valve 17 of the air source branch, open the switch valve 8 of the air conditioner heat exchanger, close the switch valve 9 of the hot water heat exchanger, open the first expansion valve 4, close the second expansion valve 6, open the air conditioner water pump 11, Close the hot water pump 12, open the heat exchange fan 10. The intelligent controller controls the four-way valve 2 to operate according to the heating mode, so that a separate heating cycle can be formed, and the high-temperature and high-pressure gaseous refrigerant from the exhaust port of the compressor 1 flows into the air conditioner for heat exchange through the switch valve 8 of the air conditioner heat exchanger The high-temperature and high-pressure liquid is condensed in the vessel 5, and the refrigerant condensed into the high-temperature and high-pressure liquid passes through the first expansion valve 4 and becomes a low-temperature and low-pressure gas-liquid two-phase liquid, and the gas-liquid two-phase liquid refrigerant flows into the air source heat exchanger 3 from The heat is absorbed from the outside to realize the purpose of heating and evaporated into a low-pressure gas, and the refrigerant of the low-pressure gas returns to the compressor 1 through the gas-liquid separator 15 . Through the aforementioned cycle, the air conditioner heat exchanger 5 can effectively complete heating after absorbing heat from the external environment.

Fig. 4 is the working flow diagram of the independent heating of the ice evaporator of the present invention; the intelligent controller will open the first on-off valve 18 of the ice-condensing branch and the second on-off valve 19 of the ice-condensing branch, and close the first on-off valve of the air source branch 16 and the second switch valve 17 of the air source branch, open the switch valve 8 of the air conditioner heat exchanger, close the switch valve 9 of the hot water heat exchanger, open the first expansion valve 4, close the second expansion valve 6, open the air conditioner water pump 11, Close the hot water pump 12, open the ice water pump 20 and the ice water separator 21. The intelligent controller controls the four-way valve 2 to operate according to the heating mode, so that a separate heating cycle can be formed, and the high-temperature and high-pressure gaseous refrigerant from the exhaust port of the compressor 1 flows into the air conditioner for heat exchange through the switch valve 8 of the air conditioner heat exchanger The high-temperature and high-pressure liquid is condensed in the vessel 5, and the refrigerant condensed into the high-temperature and high-pressure liquid passes through the first expansion valve 4 to become a low-temperature and low-pressure gas-liquid two-phase liquid, and the gas-liquid two-phase liquid refrigerant flows into the ice-condensing evaporator 13 from the outside The heat is absorbed to achieve the purpose of heating and evaporated into a low-pressure gas, and the refrigerant of the low-pressure gas returns to the compressor 1 after passing through the check valve 14 and the gas-liquid separator 15 . Through the aforementioned cycle, the ice condensation evaporator 13 can effectively complete heating after absorbing heat from the external environment.

Fig. 5 is the working flow diagram of the hybrid heating of the air conditioning heat exchanger and the freezing evaporator of the present invention; the intelligent controller will open the first switch valve 18 of the freezing branch and the second switching valve 19 of the freezing branch, open the air source branch The first on-off valve 16 of the air source branch and the second on-off valve 17 of the air source branch, open the on-off valve 8 of the air-conditioning heat exchanger, close the on-off valve 9 of the hot water heat exchanger, open the first expansion valve 4, and close the second expansion valve 6, Turn on the air conditioner water pump 11, turn off the hot water pump 12, turn on the heat exchange fan 10, turn on the ice water pump 20 and the ice water separator 21. The intelligent controller controls the four-way valve 2 to operate according to the heating mode, so that a mixed heating cycle can be formed, and the high-temperature and high-pressure gaseous refrigerant from the exhaust port of the compressor 1 flows into the air conditioner for heat exchange through the switch valve 8 of the air conditioner heat exchanger The high temperature and high pressure liquid is condensed in the vessel 5, and the refrigerant condensed into the high temperature and high pressure liquid passes through the first expansion valve 4 to become a low temperature and low pressure gas-liquid two-phase liquid. The refrigerant of the liquid two-phase liquid flows into the air source heat exchanger 3 to absorb heat from the outside to achieve the purpose of heating and evaporates into a low-pressure gas. The refrigerant of the low-pressure gas returns to the compressor 1 through the gas-liquid separator 15; the other gas-liquid The two-phase liquid refrigerant flows into the ice-condensing evaporator 13 to absorb heat from the outside to achieve heating purpose and evaporates into a low-pressure gas. The low-pressure gas refrigerant returns to the compressor 1 after passing through the check valve 14 and the gas-liquid separator 15 . Through the aforementioned two-way circulation, the air conditioner heat exchanger 5 and the deicing evaporator 13 can effectively complete heating after absorbing heat from the external environment.

Accompanying drawing 6 is the working flow diagram of the air conditioner heat exchanger of the present invention separately making domestic hot water; the intelligent controller will close the first switching valve 18 of the freezing branch and the second switching valve 19 of the freezing branch, and open the air source branch The first switch valve 16 and the second switch valve 17 of the air source branch, close the switch valve 8 of the air conditioner heat exchanger, open the switch valve 9 of the hot water heat exchanger, open the first expansion valve 4, open the second expansion valve 6, and close The air-conditioning water pump 11, the hot water pump 12, and the heat exchange fan 10 are turned on. The intelligent controller controls the four-way valve 2 to operate according to the heating mode, so that a separate domestic hot water circulation loop can be formed, and the high-temperature and high-pressure gaseous refrigerant from the exhaust port of the compressor 1 flows in through the hot water heat exchanger switch valve 9 The hot water heat exchanger 7 and the hot water pump 12 continuously inject new water into the hot water heat exchanger 7 to realize heat exchange with the high-temperature and high-pressure gaseous refrigerant, and the high-temperature and high-pressure gaseous refrigerant is condensed into a high-temperature and high-pressure liquid; high-temperature and high-pressure liquid refrigeration The refrigerant then flows into the air-conditioning heat exchanger 5 through the second expansion valve 6, and the air-conditioning water pump 11 is in a closed state, so the high-temperature and high-pressure liquid refrigerant does not undergo a large amount of heat exchange in the air-conditioning heat exchanger 5; The refrigerant passes through the air conditioner heat exchanger 5 and the first expansion valve 4 into a low-temperature and low-pressure gas-liquid two-phase liquid, and the gas-liquid two-phase liquid refrigerant flows into the air source heat exchanger 3 to absorb heat from the outside to achieve the purpose of heating and evaporates into The low-pressure gas, and the refrigerant of the low-pressure gas returns to the compressor 1 through the gas-liquid separator 15 . Through the aforementioned cycle, the hot water heat exchanger 7 can effectively complete domestic hot water production after absorbing heat from the external environment.

Accompanying drawing 7 is the working flow chart of the working flow diagram of making domestic hot water independently by the freezing evaporator of the present invention; the intelligent controller can close the first switching valve 18 of the freezing branch and the second switching valve 19 of the freezing branch, open The first switch valve 16 of the air source branch and the second switch valve 17 of the air source branch close the switch valve 8 of the air conditioner heat exchanger, open the switch valve 9 of the hot water heat exchanger, open the first expansion valve 4, and open the second expansion valve. Valve 6, turn off the air conditioner water pump 11, turn on the hot water pump 12, turn off the heat exchange fan 10, turn on the ice water pump 20 and the ice water separator 21. The intelligent controller controls the four-way valve 2 to operate according to the heating mode, so that a separate domestic hot water circulation loop can be formed, and the high-temperature and high-pressure gaseous refrigerant from the exhaust port of the compressor 1 flows in through the hot water heat exchanger switch valve 9 The hot water heat exchanger 7 and the hot water pump 12 continuously inject new water into the hot water heat exchanger 7 to realize heat exchange with the high-temperature and high-pressure gaseous refrigerant, and the high-temperature and high-pressure gaseous refrigerant is condensed into a high-temperature and high-pressure liquid; high-temperature and high-pressure liquid refrigeration The refrigerant then flows into the air-conditioning heat exchanger 5 through the second expansion valve 6, and the air-conditioning water pump 11 is in a closed state, so the high-temperature and high-pressure liquid refrigerant does not undergo a large amount of heat exchange in the air-conditioning heat exchanger 5; The refrigerant passes through the air-conditioning heat exchanger 5 and the first expansion valve 4 to become a low-temperature and low-pressure gas-liquid two-phase liquid, and the gas-liquid two-phase liquid refrigerant flows into the ice-condensing evaporator 13 to absorb heat from the outside to achieve the purpose of heating and evaporate to a low-pressure refrigerant. Gas, the refrigerant of the low-pressure gas returns to the compressor 1 after passing through the check valve 14 and the gas-liquid separator 15 . Through the aforementioned cycle, the hot water heat exchanger 7 can effectively complete domestic hot water production after absorbing heat from the external environment.

Accompanying drawing 8 is the working flow chart of the working flow diagram of the air conditioning heat exchanger of the present invention and freezing evaporator mixed system domestic hot water; Intelligent controller can open the first on-off valve 18 of freezing branch and the second switching valve 18 of freezing branch. Switch valve 19, open the first switch valve 16 of the air source branch and the second switch valve 17 of the air source branch, close the switch valve 8 of the air conditioner heat exchanger, open the switch valve 9 of the hot water heat exchanger, and open the first expansion valve 4 1. Open the second expansion valve 6, turn off the air-conditioning water pump 11, turn on the hot water pump 12, turn on the heat exchange fan 10, turn on the ice water pump 20 and the ice water separator 21. The intelligent controller controls the four-way valve 2 to operate according to the heating mode, so that a mixed domestic hot water circulation loop can be formed, and the high-temperature and high-pressure gaseous refrigerant from the exhaust port of the compressor 1 flows into the hot water heat exchanger through the switch valve 9 The hot water heat exchanger 7 and the hot water pump 12 continuously inject new water into the hot water heat exchanger 7 to realize heat exchange with the high-temperature and high-pressure gaseous refrigerant, and the high-temperature and high-pressure gaseous refrigerant is condensed into a high-temperature and high-pressure liquid; high-temperature and high-pressure liquid refrigeration The refrigerant then flows into the air-conditioning heat exchanger 5 through the second expansion valve 6, and the air-conditioning water pump 11 is in a closed state, so the high-temperature and high-pressure liquid refrigerant does not undergo a large amount of heat exchange in the air-conditioning heat exchanger 5; The refrigerant passes through the air conditioner heat exchanger 5 and the first expansion valve 4 to become a low-temperature and low-pressure gas-liquid two-phase liquid, and the gas-liquid two-phase liquid refrigerant flows all the way into the air source heat exchanger 3 to absorb heat from the outside to achieve the purpose of heating and evaporate It is a low-pressure gas, and the refrigerant of the low-pressure gas returns to the compressor 1 through the gas-liquid separator 15; the other way flows into the ice-condensing evaporator 13 to absorb heat from the outside to achieve the purpose of heating and evaporates into a low-pressure gas, and the refrigerant of the low-pressure gas passes through The check valve 14 and the gas-liquid separator 15 return to the compressor 1. Through the aforementioned cycle, the hot water heat exchanger 7 can effectively complete domestic hot water production after absorbing heat from the external environment.

Fig. 9 is a work flow chart of the air conditioner heat exchanger of the present invention for separately heating and domestic hot water; the intelligent controller will close the first switching valve 18 of the freezing branch and the second switching valve 19 of the freezing branch, and open the air source The first switch valve 16 of the branch circuit and the second switch valve 17 of the air source branch circuit close the switch valve 8 of the air conditioner heat exchanger, open the switch valve 9 of the hot water heat exchanger, open the first expansion valve 4, and open the second expansion valve 6 , turn on the air-conditioning water pump 11, turn on the hot water pump 12, and turn on the heat exchange fan 10. The intelligent controller controls the four-way valve 2 to operate according to the heating mode, so that a separate heating and domestic hot water circulation loop can be formed, and the high-temperature and high-pressure gaseous refrigerant coming out of the exhaust port of the compressor 1 passes through the hot water heat exchanger switch The valve 9 flows into the hot water heat exchanger 7, and the hot water pump 12 continuously injects new water into the hot water heat exchanger 7 to realize heat exchange with the high-temperature and high-pressure gaseous refrigerant, and a part of the high-temperature and high-pressure gaseous refrigerant condenses into a high-temperature and high-pressure liquid; The refrigerant then flows into the air-conditioning heat exchanger 5 through the second expansion valve 6, and the air-conditioning water pump 11 is in a working state, so the refrigerant undergoes a large amount of heat exchange in the air-conditioning heat exchanger 5 and is completely condensed into a high-temperature and high-pressure liquid; The high-pressure liquid refrigerant passes through the first expansion valve 4 to become a low-temperature and low-pressure gas-liquid two-phase liquid, and the gas-liquid two-phase liquid refrigerant flows into the air source heat exchanger 3 to absorb heat from the outside to achieve the purpose of heating and evaporates into a low-pressure gas , the low-pressure gas refrigerant returns to the compressor 1 through the gas-liquid separator 15 . Through the aforementioned cycle, the hot water heat exchanger 7 and the air conditioner heat exchanger 5 can effectively complete heating and domestic hot water production after absorbing heat from the external environment.

Fig. 10 is a working flow chart of the working flow chart of the ice freezing evaporator of the present invention for heating and domestic hot water separately; the intelligent controller will open the first switching valve 18 of the freezing branch and the second switching valve 19 of the freezing branch , close the first switch valve 16 of the air source branch and the second switch valve 17 of the air source branch, close the switch valve 8 of the air conditioner heat exchanger, open the switch valve 9 of the hot water heat exchanger, open the first expansion valve 4, open the second Two expansion valves 6, open the air-conditioning water pump 11, open the hot water pump 12, close the heat exchange fan 10, open the ice water water pump 20 and the ice water separator 21. The intelligent controller controls the four-way valve 2 to operate according to the heating mode, so that a separate heating and domestic hot water circulation loop can be formed, and the high-temperature and high-pressure gaseous refrigerant coming out of the exhaust port of the compressor 1 passes through the hot water heat exchanger switch The valve 9 flows into the hot water heat exchanger 7, and the hot water pump 12 continuously injects new water into the hot water heat exchanger 7 to realize heat exchange with the high-temperature and high-pressure gaseous refrigerant, and a part of the high-temperature and high-pressure gaseous refrigerant condenses into a high-temperature and high-pressure liquid; The refrigerant then flows into the air-conditioning heat exchanger 5 through the second expansion valve 6, and the air-conditioning water pump 11 is in a working state, so the refrigerant undergoes a large amount of heat exchange in the air-conditioning heat exchanger 5 and is completely condensed into a high-temperature and high-pressure liquid; The high-pressure liquid refrigerant passes through the first expansion valve 4 to become a low-temperature and low-pressure gas-liquid two-phase liquid, and the gas-liquid two-phase liquid refrigerant flows into the ice-condensing evaporator 13 to absorb heat from the outside to achieve the purpose of heating and evaporates into a low-pressure gas. The low-pressure gas refrigerant returns to the compressor 1 after passing through the check valve 14 and the gas-liquid separator 15 . Through the aforementioned cycle, the hot water heat exchanger 7 and the air conditioner heat exchanger 5 can effectively complete heating and domestic hot water production after absorbing heat from the external environment.

Fig. 11 is the working flow diagram of the working flow chart of the mixed heating and domestic hot water system of the air conditioner heat exchanger and the freezing evaporator of the present invention; the intelligent controller will open the first switching valve 18 of the freezing branch and the freezing branch The second switch valve 19, open the first switch valve 16 of the air source branch and the second switch valve 17 of the air source branch, close the switch valve 8 of the air conditioner heat exchanger, open the switch valve 9 of the hot water heat exchanger, and open the first expansion valve Valve 4, open the second expansion valve 6, turn on the air conditioning water pump 11, turn on the hot water pump 12, turn on the heat exchange fan 10, turn on the ice water pump 20 and the ice water separator 21. The intelligent controller controls the four-way valve 2 to operate according to the heating mode, so that a mixed heating and domestic hot water circulation loop can be formed. The high-temperature and high-pressure gaseous refrigerant coming out of the exhaust port of compressor 1 passes through the hot water heat exchanger switch. The valve 9 flows into the hot water heat exchanger 7, and the hot water pump 12 continuously injects new water into the hot water heat exchanger 7 to realize heat exchange with the high-temperature and high-pressure gaseous refrigerant, and a part of the high-temperature and high-pressure gaseous refrigerant condenses into a high-temperature and high-pressure liquid; The refrigerant then flows into the air-conditioning heat exchanger 5 through the second expansion valve 6, and the air-conditioning water pump 11 is in a working state, so the refrigerant undergoes a large amount of heat exchange in the air-conditioning heat exchanger 5 and is completely condensed into a high-temperature and high-pressure liquid; The high-pressure liquid refrigerant passes through the first expansion valve 4 to become a low-temperature and low-pressure gas-liquid two-phase liquid; one path of gas-liquid two-phase liquid refrigerant flows into the air source heat exchanger 3 to absorb heat from the outside to achieve the purpose of heating and evaporates to low-pressure Gas, the low-pressure gas refrigerant returns to the compressor 1 through the gas-liquid separator 15; the other gas-liquid two-phase liquid refrigerant flows into the ice-condensing evaporator 13 to absorb heat from the outside to achieve the purpose of heating and evaporates into low-pressure gas. The low-pressure gas refrigerant returns to the compressor 1 after passing through the check valve 14 and the gas-liquid separator 15 . Through the aforementioned cycle, the hot water heat exchanger 7 and the air conditioner heat exchanger 5 can effectively complete heating and domestic hot water production after absorbing heat from the external environment.

Accompanying drawing 12 is the working flow chart of the working flow chart of cooling and making domestic hot water of air conditioner heat exchanger of the present invention; Intelligent controller can close the first on-off valve 18 of freezing branch and the second switching valve 19 of freezing branch, Open the first switch valve 16 of the air source branch and the second switch valve 17 of the air source branch, close the switch valve 8 of the air conditioner heat exchanger, open the switch valve 9 of the hot water heat exchanger, open the first expansion valve 4, open the second The expansion valve 6 turns on the air-conditioning water pump 11, turns on the hot water pump 12, and turns off the heat exchange fan 10. The intelligent controller controls the four-way valve 2 to operate according to the heating mode, so that a cooling and domestic hot water circulation loop can be formed. The high-temperature and high-pressure gaseous refrigerant coming out of the exhaust port of the compressor 1 passes through the hot water heat exchanger switch valve 9 Flowing into the hot water heat exchanger 7, the hot water pump 12 continuously injects new water into the hot water heat exchanger 7 to realize heat exchange with the high-temperature and high-pressure gaseous refrigerant, and a part of the high-temperature and high-pressure gaseous refrigerant condenses into a high-temperature and high-pressure liquid; After throttling by the second expansion valve 6, it becomes a low-temperature and low-pressure gas-liquid two-phase liquid and then flows into the air conditioner heat exchanger 5. The air conditioner water pump 11 is in the working state, so the refrigerant undergoes a large amount of heat exchange and cooling in the air conditioner heat exchanger 5. The air-conditioning water is evaporated into low-pressure gas; the low-pressure gas returns to the compressor 1 through the first expansion valve 4, the air source heat exchanger 3, and the gas-liquid separator 15, and no heat exchange occurs in the air source heat exchanger 3. Through the aforementioned cycle, the hot water heat exchanger 7 and the air conditioner heat exchanger 5 can effectively complete the cooling and domestic hot water production after heat exchange, and achieve the purpose of recovering condensed waste heat and heating domestic hot water while cooling. When the cooling load is small, the intelligent controller can use the frequency conversion device to partially turn on the heat exchange fan 10 to drive the air source heat exchanger 3 to evaporate and exchange heat.

Accompanying drawing 13 is the working flow chart of the working flow diagram of freezing and making domestic hot water of the freezing evaporator of the present invention; The intelligent controller can open the first switch valve 18 of the freezing branch and the second switching valve 19 of the freezing branch. Close the first switch valve 16 of the air source branch and the second switch valve 17 of the air source branch, close the switch valve 8 of the air conditioner heat exchanger, open the switch valve 9 of the hot water heat exchanger, open the first expansion valve 4, open the second The expansion valve 6 turns on the air conditioning water pump 11, turns on the hot water pump 12, turns off the heat exchange fan 10, turns off the ice water pump 20 and the ice water separator 21. The intelligent controller controls the four-way valve 2 to operate according to the heating mode, so that a cooling and domestic hot water circulation loop can be formed. The high-temperature and high-pressure gaseous refrigerant coming out of the exhaust port of the compressor 1 passes through the hot water heat exchanger switch valve 9 Flowing into the hot water heat exchanger 7, the hot water pump 12 continuously injects new water into the hot water heat exchanger 7 to realize heat exchange with the high-temperature and high-pressure gaseous refrigerant, and a part of the high-temperature and high-pressure gaseous refrigerant condenses into a high-temperature and high-pressure liquid; After throttling by the second expansion valve 6, it becomes a low-temperature and low-pressure gas-liquid two-phase liquid and then flows into the air conditioner heat exchanger 5. The air conditioner water pump 11 is in the working state, so the refrigerant undergoes a large amount of heat exchange and cooling in the air conditioner heat exchanger 5. The air-conditioning water is evaporated into low-pressure gas; the low-pressure gas returns to the compressor 1 through the first expansion valve 4, the ice-condensing evaporator 13, and the check valve 14, and no heat exchange occurs in the ice-condensing evaporator 13. Through the aforementioned cycle, the hot water heat exchanger 7 and the air conditioner heat exchanger 5 can effectively complete the cooling and domestic hot water production after heat exchange, and achieve the purpose of recovering condensed waste heat and heating domestic hot water while cooling. When the refrigeration load is small, the intelligent controller can turn on the ice water pump 20 and the ice water separator 21 to drive the ice condensation evaporator 13 to evaporate and exchange heat.

Claims (1)

1. A cooling and heating water circuit of a heat pump and a hot water system, characterized in that: comprising a compressor (1), a four-way valve (2), a gas-liquid separator (15) connected in sequence through refrigerant pipelines ), the first switching valve (16) of the air source branch, the air source heat exchanger (3), the second switching valve (17) of the air source branch, the first switching valve (18) of the freezing branch, and the check valve (14), icing evaporator (13), second switching valve of icing branch (19), first expansion valve (4), air conditioner heat exchanger (5), second expansion valve (6), hot water Heat exchanger (7), switch valve of air conditioner heat exchanger (8), switch valve of hot water heat exchanger (9); where: The four-way valve (2), the first switch valve (16) of the air source branch, the second switch valve (17) of the air source branch, the first switch valve (18) of the ice freezing branch , the second on-off valve (19) of the freezing branch, the first expansion valve (4), the second expansion valve (6), the air-conditioning heat exchanger on-off valve (8) and the heat exchanger The switch valve (9) of the water heat exchanger is connected with the intelligent controller respectively; The intelligent controller controls the four-way valve (2) to work in heating mode, the intelligent controller controls the first on-off valve (16) of the air source branch and the second on-off valve (17) of the air source branch to In the open working state, the intelligent controller controls the first switching valve (18) of the freezing branch and the second switching valve (19) of the freezing branch to be in the closed working state, and the intelligent controller controls the The first expansion valve (4) is in the open working state, the intelligent controller controls the second expansion valve (6) to be in the open working state, and the intelligent controller controls the air conditioner heat exchanger switch valve (8) to be In the closed working state, the intelligent controller controls the switch valve (9) of the hot water heat exchanger to be in the open working state; One side of the air conditioner heat exchanger (5) is provided with an air conditioner water pump (11), one side of the hot water heat exchanger (7) is provided with a hot water pump (12), and the intelligent controller controls the The air-conditioning water pump (11) is in the working state, and the intelligent controller controls the hot water pump (12) to be in the working state; one side of the outdoor heat exchanger (3) is provided with the heat exchange fan (10 ), the intelligent controller controls the heat exchanging fan (10) to be closed or half-opened. the