CN218993568U - Direct expansion type cold and hot double-supply heat pump air conditioning system with heat recovery function - Google Patents
Direct expansion type cold and hot double-supply heat pump air conditioning system with heat recovery function Download PDFInfo
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- CN218993568U CN218993568U CN202320170743.8U CN202320170743U CN218993568U CN 218993568 U CN218993568 U CN 218993568U CN 202320170743 U CN202320170743 U CN 202320170743U CN 218993568 U CN218993568 U CN 218993568U
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Abstract
The direct expansion type cold and hot double-heat supply pump air conditioning system with heat recovery comprises a compressor, wherein the compressor is connected with a four-way reversing valve, a refrigerant circulates between the compressor and the four-way reversing valve, the four-way reversing valve is respectively connected with an indoor heat exchanger, a gas-liquid separator and an outdoor heat exchanger unit, the outdoor heat exchanger unit is connected with a liquid storage device, an electronic expansion valve and an indoor heat exchanger, the outdoor heat exchanger unit comprises a heat exchanger unit and a heat recovery unit, the heat exchanger unit comprises a first electromagnetic valve and a fin type heat exchanger, the fin type heat exchanger is connected with the gas-liquid separator, the heat recovery unit comprises a second electromagnetic valve and a tubular type heat exchanger, the tubular type heat exchanger is connected with the gas-liquid separator, the tubular type heat exchanger is externally connected with a heat storage water tank, and the indoor heat exchanger is connected with a blower; the air feeder is connected with an air supply pipeline, and the air conditioning system can recover heat in the refrigeration process, so that hot water in the production and living processes is provided in the process of adjusting the temperature of a workshop.
Description
Technical Field
The utility model relates to the technical field of air conditioning refrigeration, in particular to a direct expansion type cold and hot double-supply heat pump air conditioning system with heat recovery.
Background
The energy is the material basis for human survival and social development, is not only the motive power for national economy development, but also an important index for measuring national comprehensive national power and national living standard. With the advancement of industrialization, national economy and science and technology of China are rapidly developed, and the demands and the consumption of various resources are increased. Therefore, the energy and environment problems become the bottleneck problem for restricting the industrial process and the economic and social development of China, the energy utilization efficiency is improved, the energy saving and emission reduction policies are implemented, and the energy and environment protection system is a necessary path for realizing sustainable development and meeting the requirements of severe energy and environment situations.
With the development of industry, the production requirement of products is improved, and it is important to keep the temperature and humidity of the suitable workshop environment, so that the temperature is comfortable, the humidity is suitable, and meanwhile, hot water is needed to meet the use and production requirements of personnel in the production process.
The existing air conditioning system can only meet the cooling requirement of the indoor environment for places with cooling requirement, and cannot meet the requirements of cooling and dehumidifying the space and storing hot water, so that huge energy waste is caused, and the prior art is improved.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a direct expansion type cold and hot double-heat-supply pump air conditioning system with heat recovery, which collects refrigerant through a heat recovery unit connected with a four-way reversing valve, so that the air conditioning system can recover heat in the refrigeration process, and hot water in the production and living processes is provided in the process of realizing workshop temperature regulation.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: the direct expansion type cold and hot double-supply heat pump air conditioning system with the heat recovery function comprises a compressor, wherein the compressor is connected with a four-way reversing valve, a refrigerant circulates between the compressor and the four-way reversing valve, and the four-way reversing valve distributes the flow of the refrigerant; the four-way reversing valve is respectively connected with an indoor heat exchanger, a gas-liquid separator and an outdoor heat exchanger unit, the outdoor heat exchanger unit is connected with a liquid storage device, an electronic expansion valve and an indoor heat exchanger, the outdoor heat exchanger unit comprises a heat exchanger unit and a heat recovery unit, the heat exchanger unit comprises a first electromagnetic valve and a fin type heat exchanger which are communicated with the four-way reversing valve, the fin type heat exchanger is connected with the gas-liquid separator, the heat recovery unit comprises a second electromagnetic valve and a tubular type heat exchanger which are communicated with the four-way reversing valve, the tubular type heat exchanger is connected with the gas-liquid separator, the tubular type heat exchanger is externally connected with a heat storage water tank, and the indoor heat exchanger is connected with a blower; the air feeder is connected with an air supply pipeline.
Through adopting above-mentioned technical scheme, during the cooling operation, four-way reversing valve makes the refrigerant of high temperature high pressure in the compressor get into in the tubular heat exchanger through the second solenoid valve, water in the heat storage water tank is because refrigerant liquefaction exothermic makes the temperature in the heat storage water tank rise, thereby retrieve the heat, and when the hot water in the heat storage water tank is full then four-way reversing valve and first electricity survey valve intercommunication make refrigerant get into fin formula heat exchanger and carry out the heat exchange, become low-pressure refrigeration steam after the refrigerant that flows from the heat exchange unit passes through the electronic expansion valve throttle depressurization, realize the exchange of cold and hot air in the workshop through the forced draught blower, this air conditioning system has and can retrieve the heat in the refrigeration process, thereby provide the hot water in production, the life in-process in realization regulation workshop temperature, reduce the loss of energy, energy saving and environmental protection.
The utility model is further provided with: the air feeder is a direct-current variable-frequency fan.
Through adopting above-mentioned technical scheme, the velocity of flow of gas can be adjusted to direct current variable frequency fan, the adjustment of the different humidity environment in the workshop of being convenient for reduces the loss of energy.
The utility model is further provided with: the air supply pipeline comprises an air supply channel communicated with the outdoor environment and an air outlet positioned in the indoor environment, a first electric air valve is arranged in the air supply channel and is communicated with the outdoor environment, a second electric air valve is arranged at the air outlet, and the second electric air valve is communicated with the indoor environment.
Through adopting above-mentioned technical scheme, the switch of second electronic blast gate control air outlet is convenient for adjust indoor local regional temperature, and first electronic blast gate can control the intercommunication of air supply passage and outdoor environment, can not influence suitable indoor environment when workshop temperature is suitable and the heat storage water tank needs moisturizing.
The utility model is further provided with: the refrigerant adopted by the compressor is R134a refrigerant.
By adopting the technical scheme, the R134a refrigerant does not contain chlorine atoms, so that the damage to an ozone layer is reduced.
The utility model is further provided with: the tubular heat exchanger is a double-pipe heat exchanger.
By adopting the technical scheme, the double-pipe heat exchanger has the advantages of high flow and difficult blockage, and the heat exchanger is prevented from being blocked due to plate formation in the water heating process.
The utility model is further provided with: the heat storage water tank is connected with a first water pipe electromagnetic valve and a second water pipe electromagnetic valve, the first water pipe electromagnetic valve and the second water pipe electromagnetic valve are respectively connected with the double-pipe heat exchanger, and the first water pipe electromagnetic valve is arranged at the bottom of the heat storage water tank.
Through adopting above-mentioned technical scheme, first water pipe solenoid valve is located the bottom of heat storage water tank, can spontaneous formation circulation when double pipe heat exchanger heats water, reduces the setting of circulating pump.
The utility model is further provided with: the heat storage water tank is also connected with a water inlet pipe and a water outlet pipe, the water inlet pipe is used for supplementing the water level of the heat storage water tank, and hot water in the heat storage water tank flows out through the water outlet pipe.
By adopting the technical scheme, the water inlet pipe and the water outlet pipe facilitate the supplement and use of water in the heat storage water tank.
The utility model is further provided with: and a thermometer for monitoring the liquid height, the water level and the liquid temperature is also arranged in the heat storage water tank.
By adopting the technical scheme: the water level meter can display the water level in the heat storage water tank, so that the water is convenient for personnel to supplement water, and the thermometer is convenient for personnel to adjust the temperature in the heat storage water tank and switch the operation mode of the air conditioning system.
In summary, the utility model has the following effects:
1. the air conditioning system in the scheme can have six operation modes: 1. heating water in the heat storage water tank while cooling the indoor; 2. cooling the room; 3. only the water in the heat storage water tank is heated; 4. heating water in the heat storage water tank while dehumidifying a workshop; 5. dehumidifying a workshop; 6. heating a workshop;
2. the first electric air valve and the second electric air valve can control the connection mode of the ventilating duct and the indoor and outdoor, so that the function switching of refrigeration and dehumidification is controlled and the temperature and humidity requirements of a room are met;
3. the air source heat pump system is adopted as a system heat source, so that the intelligent control of temperature is realized, the energy consumption is reduced, the indoor cooling and the hot water supply can be realized by adopting a heat recovery mode, and the utilization rate of energy sources is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic diagram of the overall structure of a direct expansion type heat pump air conditioning system with dual heat supplies;
fig. 2 is a schematic structural diagram of a heat storage water tank and an air supply duct.
In the figure: 1. a compressor; 2. a four-way reversing valve; 3. a gas-liquid separator; 4. an outdoor heat exchange unit; 41. a heat exchange unit; 411. a first electromagnetic valve; 412. a fin heat exchanger; 42. a heat recovery unit; 421. a second electromagnetic valve; 422. a double pipe heat exchanger; 5. a reservoir; 6. drying the filter; 7. an electronic expansion valve, 8 and an indoor heat exchanger; 9. a blower; 10. an air supply pipeline; 101. an air supply channel; 102. an air outlet; 103. a first electric damper; 104. a second electric damper; 11. a heat storage water tank; 12. a first water pipe electromagnetic valve; 13. a second water pipe electromagnetic valve; 14. a water inlet pipe; 15. a water outlet pipe; 17. a water level gauge; 18. a thermometer.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, a direct expansion type cold and hot double heat supply pump air conditioning system with heat recovery comprises a compressor 1, wherein the compressor 1 is connected with a four-way reversing valve 2, a refrigerant flows between the compressor 1 and the four-way reversing valve 2, and the four-way reversing valve 2 distributes the flow of the refrigerant; the four-way reversing valve 2 is respectively connected with the indoor heat exchanger 8, the gas-liquid separator 3 and the outdoor heat exchanger unit 4, the module is connected with the liquid storage device 5, the electronic expansion valve 7 and the indoor heat exchanger 8, the outdoor heat exchanger unit 4 comprises a heat exchanger unit 41 and a heat recovery unit 42, the heat exchanger unit 41 comprises a first electromagnetic valve 411 and a fin type heat exchanger 412 which are communicated with the four-way reversing valve 2, the fin type heat exchanger 412 is connected with the gas-liquid separator 3, the heat recovery unit 42 comprises a second electromagnetic valve 421 and a tubular type heat exchanger which are communicated with the four-way reversing valve 2, the tubular type heat exchanger is connected with the gas-liquid separator 3, the tubular type heat exchanger is externally connected with a heat storage water tank 11, and the indoor heat exchanger 8 is connected with the blower 9.
The air blower 9 is connected with an air supply pipeline 10, the air supply pipeline 10 comprises an air supply channel 101 communicated with an outdoor environment and an air outlet 102 positioned in an indoor environment, a first electric air valve 103 is arranged in the air supply channel 101, the first electric air valve 103 is communicated with the outdoor environment, a second electric air valve 104 is arranged at the air outlet 102, and the second electric air valve 104 is communicated with the indoor environment; the second electric air valve 104 controls the opening and closing of the air outlet 102, so that the temperature of a local indoor area can be conveniently adjusted, the first electric air valve 103 can control the communication between the air supply channel 101 and the outdoor environment, and when the workshop temperature is proper and the hot water storage tank 11 needs water replenishment, the proper indoor environment is not affected.
The heat storage water tank 11 is connected with a first water pipe electromagnetic valve 12 and a second water pipe electromagnetic valve 13, the first water pipe electromagnetic valve 12 and the second water pipe electromagnetic valve 13 are respectively connected with the double pipe heat exchanger 422, the first water pipe electromagnetic valve 12 is arranged at the bottom of the heat storage water tank 11, circulation can be spontaneously formed when the double pipe heat exchanger 422 heats water, and the setting of a circulating pump is reduced.
The heat storage water tank 11 is further connected with a water inlet pipe 14, a water outlet pipe 15 and a water level gauge 17, the water inlet pipe 14 is used for supplementing the water level of the heat storage water tank 11, hot water in the heat storage water tank 11 flows out through the water outlet pipe 15, a thermometer 18 used for monitoring the liquid height, the water level gauge 17 and the liquid temperature is further arranged in the heat storage water tank 11, the water inlet pipe 14 and the water outlet pipe 15 facilitate personnel to supplement and use water in the heat storage water tank 11, the water level gauge 17 can display the water level in the heat storage water tank 11, the personnel can supplement water conveniently, and the thermometer 18 facilitates the personnel to adjust the temperature in the heat storage water tank 11 and switch the running mode of an air conditioning system.
The forced draught blower 9 is direct current variable frequency fan, and direct current variable frequency fan can adjust the velocity of flow of gas, the adjustment of the different humidity environment in the workshop of being convenient for reduces the loss of energy.
In order to meet the environmental protection requirement, the refrigerant is R134a refrigerant, and the R134a refrigerant does not contain chlorine atoms, so that the damage to an ozone layer is reduced.
In order to avoid blocking caused by plate formation generated by heating water, the tubular heat exchanger is a double-pipe heat exchanger 422, and the double-pipe heat exchanger 422 has the advantages of high flow and difficult blocking, and avoids blocking the heat exchanger caused by plate formation in the water heating process
The specific implementation process comprises the following steps:
during cooling operation, the four-way reversing valve 2 enables high-temperature and high-pressure refrigerant in the compressor 1 to enter the tubular heat exchanger through the second electromagnetic valve 421, water in the heat storage water tank 11 rises the water temperature in the heat storage water tank 11 due to heat release of liquefaction of the refrigerant, so that heat is recovered, when the hot water in the heat storage water tank 11 is full, the four-way reversing valve 2 is communicated with the first electric measuring valve, the refrigerant enters the fin type heat exchanger 412 to perform heat exchange, the refrigerant flowing out of the heat exchange unit 41 is throttled and depressurized through the electronic expansion valve 7 and then becomes low-pressure refrigeration steam, cold and hot air exchange in a workshop is realized through the blower 9, and the air conditioning system can recover heat in the refrigerating process, so that hot water in the production and living processes is provided in the process of adjusting the temperature of the workshop, loss of energy is reduced, energy is saved, and environment is protected.
1. The cooling and heat storage water tank 11 requires hot water: the compressor 1 normally operates, discharges high-temperature and high-pressure refrigerant, exchanges heat through the double-pipe heat exchanger 422 to prepare hot water to become high-pressure medium-temperature liquid refrigerant, and passes through the liquid reservoir 5; the electronic expansion valve 7 throttles and reduces pressure, then enters the indoor heat exchanger 8 to evaporate and absorb heat to become low-pressure refrigerant steam, flows through the gas-liquid separator 3, and then enters the compressor 1 to circulate in this way; at this time, the first electric damper 103 is closed and the second electric damper 104 is opened, so that cool air is discharged to the indoor environment;
2. the temperature-reducing and heat-storing water tank 11 does not need hot water: the compressor 1 normally operates, discharges high-temperature and high-pressure refrigerant, changes the refrigerant into high-pressure medium-temperature liquid refrigerant through the fin heat exchanger 412, and passes through the liquid reservoir 5; the electronic expansion valve 7 throttles and reduces pressure, then enters the indoor heat exchanger 8 to evaporate and absorb heat to become low-pressure refrigerant steam, flows through the gas-liquid separator 3, and then enters the compressor 1 to circulate in this way; at this time, the first electric damper 103 is closed and the second electric damper 104 is opened, so that cool air is discharged to the indoor environment;
3. there is no need to adjust the temperature and the hot water tank 11 needs hot water: the compressor 1 normally operates, high-temperature and high-pressure refrigerant is discharged, hot water is prepared through heat exchange of the sleeve-type heat exchanger 422 to be changed into high-pressure medium-temperature liquid refrigerant, the high-temperature medium-temperature liquid refrigerant enters the indoor heat exchanger 8 to be evaporated and absorbed into low-pressure refrigerant steam after being throttled and depressurized by the liquid storage device 5 and the electronic expansion valve 7, and the low-pressure refrigerant steam enters the compressor 1 after flowing through the gas-liquid separator 3, and the low-pressure refrigerant steam is circulated in the same way. At this time, the second electric damper 104 is closed and the first electric damper 103 is opened, and cool air is discharged to the outdoor environment;
4. indoor dehumidification and hot water tank 11 requires hot water: the rotating speed of the blower 9 is regulated according to the humidity of the room: when: the blower 9 with the humidity of 60 percent less than 75 percent is 80 percent of the rated refrigeration rotating speed; when the humidity is less than 75 percent and the humidity is less than 90 percent, the blower 9 is 60 percent of the rated refrigeration rotating speed; the blower 9 with the humidity of 90 percent less than 100 percent is 40 percent of rated refrigeration rotation speed; the compressor 1 normally operates, discharges high-temperature and high-pressure refrigerant, exchanges heat through the double-pipe heat exchanger 422 to prepare hot water to become high-pressure medium-temperature liquid refrigerant, and passes through the liquid reservoir 5; the electronic expansion valve 7 throttles and reduces pressure, then enters the indoor heat exchanger 8 to evaporate and absorb heat to become low-pressure refrigerant steam, flows through the gas-liquid separator 3, and then enters the compressor 1 to circulate in this way;
5. indoor dehumidification and hot water storage tank 11 does not need hot water: when: the blower 9 with the humidity of 60 percent less than 75 percent is 80 percent of the rated refrigeration rotating speed; when the humidity is less than 75 percent and the humidity is less than 90 percent, the blower 9 is 60 percent of the rated refrigeration rotating speed; the blower 9 with the humidity of 90 percent less than 100 percent is 40 percent of rated refrigeration rotation speed; the compressor 1 normally operates, discharges high-temperature and high-pressure refrigerant, changes the refrigerant into high-pressure medium-temperature liquid refrigerant through the fin heat exchanger 412, and passes through the liquid reservoir 5; the electronic expansion valve 7 throttles and reduces pressure, then enters the indoor heat exchanger 8 to evaporate and absorb heat to become low-pressure refrigerant steam, flows through the gas-liquid separator 3, and then enters the compressor 1 to circulate in this way;
6. indoor heating: the compressor 1 normally operates, high-temperature and high-pressure refrigerant is discharged, the four-way reversing valve 2 is switched to enable high-temperature and high-pressure steam to exchange heat to prepare hot air into high-pressure medium-temperature liquid refrigerant through the indoor heat exchanger 8, the hot air is throttled and depressurized through the electronic expansion valve 7, the hot air enters the fin type heat exchanger 412 through the liquid reservoir 5 to evaporate and absorb heat to become low-pressure refrigerant steam, and the low-pressure refrigerant steam enters the compressor 1 after flowing through the gas-liquid separator 3, and the circulation is performed.
It should be noted that modifications and improvements can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the present utility model.
Claims (8)
1. The direct expansion type cold and hot double-heat pump air conditioning system with heat recovery comprises a compressor (1), wherein the compressor (1) is connected with a four-way reversing valve (2), refrigerant circulates between the compressor (1) and the four-way reversing valve (2), the four-way reversing valve (2) distributes flow of the refrigerant, the direct expansion type cold and hot double-heat pump air conditioning system is characterized in that the four-way reversing valve (2) is respectively connected with an indoor heat exchanger (8), a gas-liquid separator (3) and an outdoor heat exchanger unit (4), the outdoor heat exchanger unit (4) is connected with a liquid reservoir (5), an electronic expansion valve (7) and the indoor heat exchanger (8), the outdoor heat exchanger unit (4) comprises a heat exchanger unit (41) and a heat recovery unit (42), the heat exchanger unit (41) comprises a first electromagnetic valve (411) and a fin type heat exchanger (412) which are communicated with the four-way reversing valve (2), the fin type heat exchanger (412) is connected with the gas-liquid separator (3), the heat recovery unit (42) comprises a second electromagnetic valve (421) and a heat exchanger (11) which are communicated with the four-way reversing valve (2), the indoor heat exchanger (8) is connected with a blower (9); the air feeder (9) is connected with an air supply pipeline (10).
2. The direct expansion type cold and hot double heat pump air conditioning system with heat recovery according to claim 1, wherein the blower (9) is a direct current variable frequency blower.
3. The direct expansion type cold and hot double-supply heat pump air conditioning system with heat recovery according to claim 2, wherein the air supply pipeline (10) comprises an air supply channel (101) communicated with an outdoor environment and an air outlet (102) positioned in an indoor environment, a first electric air valve (103) is arranged in the air supply channel (101), the first electric air valve (103) is communicated with the outside, a second electric air valve (104) is arranged at the air outlet (102), and the second electric air valve (104) is communicated with the indoor environment.
4. The direct expansion type heat and cold double heat pump air conditioning system with heat recovery according to claim 1, wherein the refrigerant adopted by the compressor (1) is R134a refrigerant.
5. A direct expansion dual heat and cold supply pump air conditioning system with heat recovery according to claim 1, characterized in that the tube heat exchanger is a double tube heat exchanger (422).
6. The direct expansion type cold and hot double heat pump air conditioning system with heat recovery according to claim 5, wherein the heat storage water tank (11) is connected with a first water pipe electromagnetic valve (12) and a second water pipe electromagnetic valve (13), the first water pipe electromagnetic valve (12) and the second water pipe electromagnetic valve (13) are respectively connected with the double pipe heat exchanger (422), and the first water pipe electromagnetic valve (12) is arranged at the bottom of the heat storage water tank (11).
7. The direct expansion type cold and hot double heat supply pump air conditioning system with heat recovery according to claim 6, wherein the heat storage water tank (11) is further connected with a water inlet pipe (14) and a water outlet pipe (15), the water inlet pipe (14) is used for supplementing the water level of the heat storage water tank (11), and hot water in the heat storage water tank (11) flows out through the water outlet pipe (15).
8. The direct expansion type cold and hot double heat pump air conditioning system with heat recovery according to claim 7, wherein a thermometer (18) for monitoring the liquid level gauge (17) and the liquid temperature is further arranged in the hot water storage tank (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320170743.8U CN218993568U (en) | 2023-02-09 | 2023-02-09 | Direct expansion type cold and hot double-supply heat pump air conditioning system with heat recovery function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320170743.8U CN218993568U (en) | 2023-02-09 | 2023-02-09 | Direct expansion type cold and hot double-supply heat pump air conditioning system with heat recovery function |
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| Publication Number | Publication Date |
|---|---|
| CN218993568U true CN218993568U (en) | 2023-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320170743.8U Active CN218993568U (en) | 2023-02-09 | 2023-02-09 | Direct expansion type cold and hot double-supply heat pump air conditioning system with heat recovery function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218993568U (en) |
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2023
- 2023-02-09 CN CN202320170743.8U patent/CN218993568U/en active Active
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