CN211345917U - Evaporation type condensation air-conditioning heat pump system with optimized refrigeration performance - Google Patents
Evaporation type condensation air-conditioning heat pump system with optimized refrigeration performance Download PDFInfo
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- CN211345917U CN211345917U CN201922087159.2U CN201922087159U CN211345917U CN 211345917 U CN211345917 U CN 211345917U CN 201922087159 U CN201922087159 U CN 201922087159U CN 211345917 U CN211345917 U CN 211345917U
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Abstract
The utility model discloses an evaporation formula condensation air conditioner heat pump system of optimizing refrigeration performance relates to refrigeration and air conditioning equipment field, comprises compressor, cross valve, use side heat exchanger, finned tube heat exchanger, evaporative condenser, spray water device, cistern, drier-filter, throttling arrangement, vapour and liquid separator, fan, motorised valve, check valve and pipeline and control circuit. The utility model has the advantages that: compared with an air source heat pump unit, the operation energy efficiency during refrigeration is greatly improved and is as high as 30%; compared with a water chilling unit and a cooling tower, the energy efficiency is better, the product quality is good and attractive due to the integrated design, the occupied area is small, and the construction cost is reduced; compared with the single refrigeration function of a water chilling unit, the heating mode is increased, and the application range is widened; compared with the existing heat pump system, the refrigeration performance is improved and the design cost is reduced; the reliability of system design is improved, and the interchange operation of refrigeration evaporative cooling and air-cooled cooling and the clear oil operation of a heat exchanger are easier to implement.
Description
Technical Field
The utility model relates to a refrigeration and air conditioning equipment's field, concretely relates to optimize refrigeration performance's evaporation formula condensation air conditioner heat pump system.
Background
The evaporative condensing technology is a high-efficiency electricity-saving and water-saving technology. Cooling circulating water is sprayed and uniformly distributed on the surface of the heat exchanger to form a continuous water film, and the heat of fluid in the heat exchanger absorbed by latent heat of water evaporation is transferred to air to be taken away by utilizing the enthalpy difference driving force of unsaturated air, so that the cooling efficiency can be improved by more than 45% compared with that of air-cooled cooling; the air source heat pump technology is also an energy-saving technology, extracts heat from a low-grade air heat source, releases heat to a use side after the compressor works, and improves the efficiency by more than 2 times compared with the electric heating efficiency. In recent years, with the increasingly popularized use of evaporative condensation product technology using refrigerant as working medium, some air conditioner manufacturers have introduced new evaporative heat and cold pump products combining evaporative condensation technology and air source heat pump technology, but because of the limitations that the unit size cannot be too large, the cost cannot be too high, and the application technology is not mature, the problems of poor unit performance, poor heating performance compared with the conventional air conditioner heat pump and low unit reliability generally exist, and the product optimization and improvement are needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough of prior art existence, and provide an evaporation formula condensation air conditioner heat pump system who optimizes refrigeration performance, refrigeration and heating performance all obtain optimizing the promotion, and the cost of product is lower when the efficiency is better.
The purpose of the utility model is accomplished through following technical scheme: the evaporative condensing air-conditioning heat pump system with optimized refrigeration performance comprises a compressor, a four-way valve, a use side heat exchanger, a finned tube heat exchanger, an evaporative condenser, a spray water device, a liquid receiver, a drying filter, a throttling device, a gas-liquid separator, a fan, an electric valve, a one-way valve, a pipeline and a control loop, wherein one end of the compressor is connected with a D port of the four-way valve, the other end of the compressor is communicated with the gas-liquid separator, the gas-liquid separator is communicated with an S port of the four-way valve, an inlet end of a branch where the evaporative condenser is located is connected to a middle pipeline connected with the D port of the compressor and the four-way valve through the electric refrigeration valve, an inlet end of the branch where the finned tube heat exchanger is located is connected to a condenser interface end C port of the four, the other end of the heat exchanger at the use side is connected with a throttling device, one end of the heat exchanger at the use side is communicated with an E port of the four-way valve, and the other end of the heat exchanger at the use side is connected with a liquid reservoir through a one-way valve C; during refrigeration, the exhaust gas of the compressor is directly guided to the evaporative condenser by the refrigeration electric valve to be efficiently cooled; during heating, the refrigeration electric valve is closed, the heating electric valve is opened, and the flow direction of suction and exhaust of the compressor is switched by the four-way valve, so that the operation of the air source heat pump system is realized; the evaporative condenser is arranged on the high-pressure side of the refrigerating system in both the refrigerating mode and the heating mode.
Furthermore, the evaporative condenser and the spray water device form an evaporative condensation function system and are integrated in the air-cooled module machine shell, the spray water device comprises a circulating water pump, a nozzle, a water collecting tank and a ball float valve, the water collecting tank is arranged at the bottom of the air-cooled module machine shell, the water collecting tank is communicated with the nozzle of the upper water distributor through the circulating water pump, and water inlet is controlled through the ball float valve; the nozzle is right opposite to the evaporative condenser, and the top of the air cooling module machine shell is provided with a refrigeration fan for removing high-humidity hot air formed by the evaporative condenser during refrigeration operation and cooling; when in heating operation, the air is driven to flow through the finned tube heat exchanger by the heating fan arranged above the finned tube heat exchanger, so that the unit refrigerant obtains heat from a low-temperature air heat source.
Further, the outlet end of the evaporative condenser is communicated with an inlet pipe of the liquid reservoir through a one-way valve A; the outlet end of the finned tube heat exchanger is communicated with an inlet pipe of the liquid reservoir through a one-way valve E.
Furthermore, when the system is in heating operation, the refrigeration electric valve can be opened periodically, high-temperature and high-pressure gas in the compressor is led into the heat exchange tube of the evaporative condenser, and the refrigerant and lubricating oil retained in the heat exchange tube are blown off, so that the operation reliability of the system is improved.
The utility model has the advantages that:
1. compared with the traditional air source heat pump unit, the operation energy efficiency during refrigeration is greatly improved, and can be improved by more than 30%;
2. compared with the application of the traditional water chilling unit and cooling tower, the energy efficiency is better, the integrated design ensures that delivered products have good quality, attractive appearance and small occupied area, and the construction cost is effectively reduced;
3. compared with the single refrigeration function of a water chilling unit, the heating mode is increased, and the application range is widened;
4. compared with the existing heat pump system, the refrigeration performance is improved and the design cost is reduced;
5. the reliability of system design is improved, and the interchange operation of refrigeration evaporative cooling and air-cooled cooling and the clear oil operation of a heat exchanger are easier to implement.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Description of reference numerals: the system comprises a compressor 1, a four-way valve 2, a use side heat exchanger 3, a finned tube heat exchanger 4, an evaporative condenser 5, a spray water device 6, a liquid receiver 7, a drying filter 8, a throttling device 9, a gas-liquid separator 10, a refrigeration fan 11a, a heating fan 11B, a heating electric valve 12, a refrigeration electric valve 14, a one-way valve A15, a one-way valve B16, a one-way valve C17, a one-way valve D18, a one-way valve E19, a water collecting tank 21, a ball float valve 22, a circulating water pump 23 and a nozzle 24.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
example (b): as shown in the attached drawings, the evaporative condensing air-conditioning heat pump system for optimizing the refrigeration performance is composed of a compressor 1, a four-way valve 2, a use side heat exchanger 3, a finned tube heat exchanger 4, an evaporative condenser 5, a spray water device 6, a liquid receiver 7, a drying filter 8, a throttling device 9, a gas-liquid separator 10, a fan, an electric valve, a one-way valve, a pipeline and a control loop, and is characterized in that: the exhaust end of the compressor 1 is connected with a D port of the four-way valve 2, the other end of the compressor is communicated with a gas-liquid separator 10, the gas-liquid separator 10 is communicated with an S port of the four-way valve 2, the inlet end of a branch where the evaporative condenser 5 is located is connected to a middle pipeline where the compressor 1 is connected with the D port of the four-way valve 2 through a refrigeration electric valve 14, the inlet end of a branch where the finned tube heat exchanger 4 is located is connected to a condenser interface port C of the four-way valve 2 through a heating electric valve 12, the outlet ends of the finned tube heat exchanger 4 and the evaporative condenser 5 are connected to an inlet pipeline of the liquid reservoir 7 together, one end of the drying filter 8 is communicated with an outlet pipe of the liquid reservoir 7, the other end of the drying filter is; during refrigeration, the exhaust gas of the compressor 1 is directly guided to the evaporative condenser 5 by the refrigeration electric valve 14 for efficient cooling to reduce flow pressure loss, and the use side heat exchanger 3 and the evaporative condenser 5 are arranged in parallel during refrigeration, so that mutual backup cooling operation is easy to realize; during heating, the refrigeration electric valve 14 is closed, the heating electric valve 12 is opened, and the flow direction of suction and exhaust of the compressor 1 is switched by the four-way valve 2, so that the operation of the air source heat pump system is realized. The finned tube heat exchanger 4 is an air-cooled condenser, the evaporative condenser 5 is an air-water cooled condenser mainly based on latent heat of water evaporation, the direction of exhaust gas entering the compressor 1 is adjusted by opening and closing the refrigeration electric valve 12 and the heating electric valve 14, and the evaporative condenser 5 and the finned tube heat exchanger 4 are independent, in series and in parallel, so that the system can run efficiently during refrigeration, and simultaneously has an air source heat pump function, and the two are organically combined.
In the scheme, the heating electric valve 12 and the refrigerating electric valve 14 are configured, so that the design of a system pipeline is effectively simplified, and the design cost is reduced. During the cooling operation, the cooling electric valve 14 is opened, the heating electric valve 12 is closed, and the exhaust gas of the compressor 1 enters the evaporative condenser 5 for evaporative cooling. During heating operation, the refrigeration electric valve 14 is closed, the heating electric valve 12 is opened, switching is performed through the four-way valve 2, the exhaust gas of the compressor 1 is introduced into the use side heat exchanger 3 to perform heat release cooling, and the operation of a classical air source heat pump system is realized.
In this scheme, for optimizing refrigeration performance, adopt and reduce the design of mobile pressure loss, adopt the motorised valve to replace the solenoid valve to reduce big cold volume air conditioning unit flow resistance by a wide margin. The inlet branch of the evaporative condenser 5 is directly connected to the exhaust port of the compressor 1 through the refrigeration electric valve 14, and during refrigeration operation, the exhaust of the compressor 1 is directly guided to the evaporative condenser 5 for efficient cooling, so that the flow pressure loss is reduced, the energy efficiency of a refrigeration system is improved, and the system is favorable for an R134a (1, 1, 1, 2-tetrafluoroethane) system.
In the scheme, the finned tube heat exchanger 4 and the evaporative condenser 5 are arranged in parallel during refrigeration, and the evaporative condenser 5 is positioned on the high-pressure side of the refrigeration system no matter in the refrigeration and heating modes, so that the condition that lubricating oil of a compressor is easy to be retained if the evaporative condenser is used as a low-temperature low-pressure refrigerant channel during heating operation can be avoided. Meanwhile, the evaporative condenser 5 is connected with the high-pressure side, frost is not easy to occur on the outer surface of the heat exchanger, and the refrigerant and the lubricating oil which are possibly condensed in the heat exchange pipe can be easily blown out by using high-temperature and high-pressure gas of the compressor, so that the operation reliability of the system is improved.
In the scheme, the exchange operation of refrigeration evaporative cooling and air cooling can be easily implemented, the air cooling is used as a standby option, the reliability of the system is improved, and the design redundancy is reduced. When the evaporative condenser is in fault or needs to be maintained, the air-cooled cooling mode can be switched to, and continuous use of the unit by a user is guaranteed.
As a further scheme of the scheme, the evaporative condenser 5 and the spray water device 6 form an evaporative condensation function system and are integrated in the casing of the air-cooled module machine, the evaporative condenser 5 serves as a condensation radiator, the spray water device 6 serves as a water source for evaporative cooling, spray water is uniformly sprayed on the dividing wall type heat exchange surface of the evaporative condenser 5 under the action of a water distributor on the upper portion of the evaporative condenser 5, and forced convection air generated by the refrigerating fan 11a also passes through the dividing wall type heat exchange surface, so that air-water flowing heat exchange is formed. The spray water device 6 comprises a circulating water pump 23, a nozzle 24, a water collecting tank 21 and a ball float valve 22, the water collecting tank 21 is arranged at the bottom of the shell of the air cooling module machine, the water collecting tank 21 is communicated with the nozzle 24 of the upper water distributor through the circulating water pump 23, and water inlet is controlled through the ball float valve 22; the nozzle 24 is right opposite to the evaporative condenser 5, and the top of the air cooling module machine shell is provided with a refrigeration fan 11a for removing high-humidity hot air formed by the evaporative condenser 5 during refrigeration operation and cooling; during heating operation, air is driven to flow through the finned tube heat exchanger 4 by a heating fan 11b arranged above the finned tube heat exchanger 4, so that the unit refrigerant obtains heat from a low-temperature air heat source. The refrigeration fan 11a can be adjusted at variable speed to optimize the matching refrigeration system operation.
As a preferable technical scheme, during heating operation, the electric refrigerating valve 14 can be opened periodically, high-temperature and high-pressure gas in the compressor 1 is led into the heat exchange tube of the evaporative condenser 5, and the refrigerant and lubricating oil retained in the heat exchange tube are blown off, so that the operation reliability of the system is improved.
The utility model discloses a theory of operation:
when the unit works in a refrigerating mode, the four-way valve 2 cannot be powered, the refrigerating electric valve 14 is opened, the heating electric valve 12 is closed, the spray water device 6 and the refrigerating fan 11a are put into work, the exhaust gas of the compressor 1 is guided to the evaporative condenser 5 through the refrigerating electric valve 14 to be cooled efficiently in an evaporative condensation mode, the high-temperature and high-pressure refrigerant gas is cooled into liquid, then the liquid is guided into the liquid receiver 7 through the check valve 15, and enters the throttling device 9 to be throttled, depressurized and cooled after passing through the drying filter 8. The two-phase fluid of the low-temperature and low-pressure refrigerant formed by throttling enters a use side heat exchanger 3 for heat exchange, and after the absorbed heat quantity is changed into superheated gas, the superheated gas is guided to a gas-liquid separator 10 through an S port of a four-way valve 2, and finally is sucked by a compressor 1 for compression and work and then is discharged, thereby completing the process of a refrigeration cycle. When the evaporative cooling and the air-cooled cooling are required to be operated alternately, for example, when the evaporative cooling is switched to the air-cooled cooling, the heating fan 11b can be turned on, the heating electric valve 12 can be turned on, then the shower water device 6 and the cooling fan 11a are turned off, and the cooling electric valve 14 is turned off, so that the conventional air-cooled cooling operation is realized.
When the unit heats, the electric refrigerating valve 14 is closed, the electric heating valve 12 is opened, the finned tube heat exchanger 4 and the heating fan 11b are put into operation, the four-way valve 2 is powered on to switch the exhaust flow direction, the exhaust of the compressor 1 is guided to the use side heat exchanger 3 to be cooled, the high-temperature and high-pressure refrigerant gas is cooled into liquid, then the liquid is guided into the liquid reservoir 7 through the one-way valve 17, and enters the throttling device 9 to be throttled, depressurized and cooled after passing through the drying filter 8. The two-phase fluid of the low-temperature and low-pressure refrigerant formed by throttling enters the finned tube heat exchanger 4 for heat exchange, is changed into superheated gas after absorbing the heat in the air, flows to an S port of the four-way valve 2 through the heating electric valve 12, is guided to the vapor-liquid separator 10, is finally sucked by the compressor 1 for compression and work, and is discharged, thereby completing the refrigeration cycle process of heating operation. When the heating operation is performed, the evaporative condenser 5 is positioned at the high-pressure side of the refrigerating system, frost is not easy to occur on the outer surface of the heat exchanger, high-pressure gas purging can be implemented by opening the refrigerating electric valve 14, and residual refrigerant and lubricating oil remained in the heat exchange pipe are prevented.
When the unit heats and defrosts, a classic refrigeration reverse circulation defrosting mode is adopted, and when the unit heats and defrosts, the four-way valve 2 is switched to guide the exhaust of the compressor 1 to the finned tube heat exchanger 4 for heating and defrosting.
It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.
Claims (5)
1. The utility model provides an optimize evaporative condensation air conditioner heat pump system of refrigeration performance, by compressor (1), cross valve (2), use side heat exchanger (3), finned tube heat exchanger (4), evaporative condenser (5), spray water device (6), cistern (7), drier-filter (8), throttling arrangement (9), vapour and liquid separator (10), fan, motorised valve, check valve and pipeline and control circuit constitute, its characterized in that: one end of the compressor (1) is connected with a D port of the four-way valve (2), the other end of the compressor is communicated with a gas-liquid separator (10), the gas-liquid separator (10) is communicated with an S port of the four-way valve (2), an inlet end of a branch where the evaporative condenser (5) is located is connected to a middle pipeline where the compressor (1) is connected with the D port of the four-way valve (2) through a refrigeration electric valve (14), an inlet end of a branch where the finned tube heat exchanger (4) is located is connected to a condenser port C port of the four-way valve (2) through a heating electric valve (12), the outlet ends of the finned tube heat exchanger (4) and the evaporative condenser (5) are connected to an inlet pipeline of the liquid receiver (7) together, one end of the drying filter (8) is communicated with an outlet pipe of the liquid receiver (7), the other end of the drying filter, the other end is connected with the liquid reservoir (7) through a one-way valve C (17); during refrigeration, the exhaust gas of the compressor (1) is directly guided to the evaporative condenser (5) by the refrigeration electric valve (14) for efficient cooling; during heating, the refrigeration electric valve (14) is closed, the heating electric valve (12) is opened, and the flow direction of suction and exhaust of the compressor (1) is switched by the four-way valve (2), so that the operation of an air source heat pump system is realized; the evaporative condenser (5) is positioned on the high-pressure side of the refrigerating system in the refrigerating and heating modes.
2. The evaporative condensing air-conditioning heat pump system for optimizing refrigeration performance of claim 1, wherein: the finned tube heat exchanger (4) is an air-cooled condenser, the evaporative condenser (5) is an air-water cooled condenser mainly based on latent heat of water evaporation, the direction of exhaust gas entering the compressor (1) is adjusted by opening and closing the refrigeration electric valve (14) and the heating electric valve (12), and the evaporative condenser (5) and the finned tube heat exchanger (4) are independent, in series and in parallel, so that the system can run efficiently during refrigeration, and simultaneously has an air source heat pump function, and the two are organically combined.
3. The evaporative condensing air-conditioning heat pump system for optimizing refrigeration performance of claim 1, wherein: the evaporative condenser (5) and the spray water device (6) form an evaporative condensation function system and are integrated in the air-cooled modular machine shell, the spray water device (6) comprises a circulating water pump (23), a nozzle (24), a water collecting tank (21) and a ball float valve (22), the water collecting tank (21) is arranged at the bottom of the air-cooled modular machine shell, the water collecting tank (21) is communicated with the nozzle (24) of the upper water distributor through the circulating water pump (23), and water inflow is controlled through the ball float valve (22); the nozzle (24) is right opposite to the evaporative condenser (5), and the top of the air cooling module machine shell is provided with a refrigerating fan (11a) for removing high-humidity hot air formed by the evaporative condenser (5) during refrigeration operation and cooling; during heating operation, air is driven to flow through the finned tube heat exchanger (4) by a heating fan (11b) arranged above the finned tube heat exchanger (4), so that the unit refrigerant obtains heat from a low-temperature air heat source.
4. The evaporative condensing air-conditioning heat pump system for optimizing refrigeration performance of claim 1, wherein: the outlet end of the evaporative condenser (5) is communicated with an inlet pipe of the liquid receiver (7) through a one-way valve A (15); the outlet end of the finned tube heat exchanger (4) is communicated with an inlet pipe of the liquid receiver (7) through a one-way valve E (19).
5. The evaporative condensing air-conditioning heat pump system for optimizing refrigeration performance of claim 1, wherein: when the system is in heating operation, the refrigeration electric valve (14) can be opened periodically, high-temperature and high-pressure gas in the compressor (1) is led into the heat exchange tube of the evaporative condenser (5), and refrigerant and lubricating oil retained in the heat exchange tube are blown off, so that the operation reliability of the system is improved.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922087159.2U CN211345917U (en) | 2019-11-28 | 2019-11-28 | Evaporation type condensation air-conditioning heat pump system with optimized refrigeration performance |
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| CN201922087159.2U CN211345917U (en) | 2019-11-28 | 2019-11-28 | Evaporation type condensation air-conditioning heat pump system with optimized refrigeration performance |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594971A (en) * | 2020-12-16 | 2021-04-02 | 珠海格力电器股份有限公司 | Heat pump unit, heat pump unit control method and device |
| CN113654132A (en) * | 2021-07-23 | 2021-11-16 | 青岛海尔空调电子有限公司 | Heat pump set |
| CN115264561A (en) * | 2022-07-29 | 2022-11-01 | 湖南东尤水汽能节能有限公司 | Atmospheric heat exchange type water vapor energy heat pump air conditioning device |
| CN116025972A (en) * | 2022-12-13 | 2023-04-28 | 福建省建筑设计研究院有限公司 | Integrated water loop multifunctional heat balancer |
| CN118031487A (en) * | 2024-04-15 | 2024-05-14 | 上海东方低碳科技产业股份有限公司 | Energy-saving refrigeration equipment with self-adaptive function |
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2019
- 2019-11-28 CN CN201922087159.2U patent/CN211345917U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594971A (en) * | 2020-12-16 | 2021-04-02 | 珠海格力电器股份有限公司 | Heat pump unit, heat pump unit control method and device |
| CN113654132A (en) * | 2021-07-23 | 2021-11-16 | 青岛海尔空调电子有限公司 | Heat pump set |
| CN115264561A (en) * | 2022-07-29 | 2022-11-01 | 湖南东尤水汽能节能有限公司 | Atmospheric heat exchange type water vapor energy heat pump air conditioning device |
| CN116025972A (en) * | 2022-12-13 | 2023-04-28 | 福建省建筑设计研究院有限公司 | Integrated water loop multifunctional heat balancer |
| CN116025972B (en) * | 2022-12-13 | 2024-05-28 | 福建省建筑设计研究院有限公司 | Integrated water loop multifunctional heat balancer |
| CN118031487A (en) * | 2024-04-15 | 2024-05-14 | 上海东方低碳科技产业股份有限公司 | Energy-saving refrigeration equipment with self-adaptive function |
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