CN210861760U - Natural cooling refrigerating system - Google Patents
Natural cooling refrigerating system Download PDFInfo
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- CN210861760U CN210861760U CN201921765136.6U CN201921765136U CN210861760U CN 210861760 U CN210861760 U CN 210861760U CN 201921765136 U CN201921765136 U CN 201921765136U CN 210861760 U CN210861760 U CN 210861760U
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- 238000001816 cooling Methods 0.000 title claims abstract description 119
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 143
- 238000005057 refrigeration Methods 0.000 claims abstract description 37
- 238000001704 evaporation Methods 0.000 claims abstract description 30
- 230000008020 evaporation Effects 0.000 claims abstract description 30
- 238000000926 separation method Methods 0.000 claims abstract description 3
- 239000003921 oil Substances 0.000 description 13
- 239000007788 liquid Substances 0.000 description 9
- 239000003507 refrigerant Substances 0.000 description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 125000003827 glycol group Chemical group 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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Abstract
The utility model discloses a natural cooling refrigeration system, aiming at providing an energy-saving, high-efficiency and stable natural cooling refrigeration system, the technical scheme is that the device comprises a compressor, wherein an oil separator is communicated with the compressor, the oil separator is respectively communicated with a first filter and an air-cooled condenser, the compressor is communicated with the first filter, the compressor, the oil separator and the first filter form a first loop, the air-cooled condenser is communicated with a second filter, the bottom of the second filter is communicated with a flash evaporation type economizer, the flash evaporation type economizer is communicated with the compressor, the oil separator, the air-cooled condenser, the second filter and the flash evaporation type economizer form a second loop, the flash evaporation type economizer is communicated with an evaporator, a natural cooling system is arranged on the evaporator, a water path of the natural cooling system is communicated with a water path of the evaporator in series or in parallel, and the natural cooling system is of an integral structure or an external separation structure.
Description
Technical Field
The utility model relates to a refrigerating system technical field especially relates to a natural cooling refrigerating system.
Background
The refrigerating system consists of refrigerant and four parts, i.e. compressor, condenser, expansion valve and evaporator, and the action of the compressor is to compress the steam with lower pressure into steam with higher pressure, so that the volume of the steam is reduced, the pressure is raised, the compressor sucks the working medium steam with lower pressure from the evaporator, the working medium steam with lower pressure is sent into the condenser after the pressure is raised, the liquid with higher pressure is condensed into liquid with higher pressure in the condenser, the liquid with lower pressure is sent into the evaporator after being throttled by a throttle valve, the liquid with lower pressure is absorbed and evaporated into steam with lower pressure in the evaporator, and then the steam is sent into the inlet of the compressor, thereby completing the refrigerating cycle.
At present, chinese patent publication No. CN 108131853 a discloses a refrigeration system, which includes a compressor, a condenser, a throttling device, and an evaporator, wherein the compressor, the condenser, the throttling device, and the evaporator are sequentially connected to form a circulation loop, and the refrigeration system further includes: the booster component is arranged between the condenser and the throttling device and used for increasing the pressure of refrigerant flowing through the booster component, the booster component is connected with the compressor through a pipeline, and the refrigerant flows through a power supply and a motor of the compressor through the pipeline to cool the power supply and the motor of the compressor.
Although the refrigeration system can solve the problems that the flow of liquid refrigerant is reduced under the use condition of low pressure ratio and the compressor cannot be cooled in the existing refrigeration system, the refrigeration system comprises the following components: the refrigeration system is still not energy-saving, efficient and stable enough, independent work of the subassembly in the middle of the refrigeration system cannot be independently controlled, and stable chilled water supply temperature cannot be guaranteed to be provided all year round.
SUMMERY OF THE UTILITY MODEL
In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a natural cooling refrigeration system.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the utility model provides a natural cooling refrigerating system, includes the compressor, the intercommunication has the oil separator on the compressor, the last intercommunication respectively of oil separator has first filter and air-cooled condenser, compressor and first filter intercommunication, compressor, oil separator and first filter form first return circuit, the intercommunication has the second filter on the air-cooled condenser, second filter bottom intercommunication has flash evaporation formula economizer, flash evaporation formula economizer communicates in the compressor, oil separator, air-cooled condenser, second filter and flash evaporation formula economizer form the second return circuit, the intercommunication has the evaporimeter on the flash evaporation formula economizer, be equipped with natural cooling system on the evaporimeter, natural cooling system includes natural cooling coil pipe, natural cooling coil pipe subassembly, water inlet pipeline, outlet pipeline, plate heater, first water pump, The water path of the natural cooling system is communicated with the water path of the evaporator in series or in parallel, the natural cooling system is of an integral structure or an external separation structure, and the natural cooling system is communicated with a first water path stop valve arranged on a water inlet pipeline of the natural cooling system and a second water path stop valve arranged on a water outlet pipeline of the natural cooling system.
Furthermore, the natural cooling coil is arranged on the outer side of the air-cooled condenser, and the surface of the natural cooling coil is completely attached to the surface of the air-cooled condenser.
Further, the natural cooling coil assembly is external for the air-cooled condenser, the evaporator communicates in plate heat exchanger, first water route stop valve and second water route stop valve communicate in natural cooling coil assembly, first water pump communicates in second water route stop valve, linear three-way valve installs on going out the water route.
Further, first water route stop valve communicates in linear three-way valve, linear three-way valve still communicates in plate heat exchanger and second water route stop valve, first water pump is located between second water route stop valve and the linear three-way valve, the linear three-way valve is installed on the water inlet pipeline.
Further, the second water pump is communicated between the evaporator and the plate heat exchanger.
Further, linear three-way valve communicates in the evaporimeter, linear three-way valve communicates in first water route stop valve and second water route stop valve, first water pump is located between second water route stop valve and the linear three-way valve.
Furthermore, a water path system of the natural cooling system is connected with a water path system of the evaporator in parallel.
Furthermore, a first-stage electronic expansion valve is communicated between the second filter and the flash evaporation type economizer, a second-stage electronic expansion valve is communicated between the flash evaporation type economizer and the evaporator, and a stop valve, a one-way valve and a third-stage electronic expansion valve are sequentially communicated between the flash evaporation type economizer and the compressor.
The utility model has the advantages that:
(1) the utility model discloses in, overall design is reasonable to same water route system structure is as the base, derives multiple natural cooling refrigerating system's connection structure, the water route including natural cooling system is the series-parallel connection design with the water route of evaporimeter, and natural cooling system is integral and external design, and the homoenergetic realizes better natural cooling refrigeration effect.
(2) The utility model discloses in, this system can provide stable refrigerated water supply temperature throughout the year, if ambient temperature is less than when refrigerating system's evaporimeter's refrigerated water goes out the water temperature, can close refrigerating system, promptly through the natural cooling coil pipe, during the heat load can distribute the environment, the temperature reduces, high temperature water and microthermal air in the natural cooling coil pipe carry out the heat transfer, the temperature of water reduces the refrigerated water and goes out the water temperature, and the air is heated, and the heat distributes in the air.
(3) The utility model discloses in, natural cooling coil is established ties or parallel connection to refrigerating system's the refrigerated water return line of water side evaporimeter on, and in the serial mode, natural cooling coil arranges the upper reaches of flow and heat transfer direction in, provides the precooling and the refrigerating output of refrigerated water and supplyes, reduces refrigerating system's cold volume demand, and the whole system is energy-conserving and efficient.
(4) The utility model discloses in, independent control refrigerating system's that external natural cooling coil assembly can be better wind side condenser and natural cooling coil, the higher control natural cooling coil's of assurance fan wind speed that can be independent fan wind speed makes natural cooling coil's refrigerating output can obtain guaranteeing, under lower ambient temperature, can close refrigerating system, and only move natural cooling coil.
(5) The utility model discloses in, adopt the water pump to be used for overcoming natural cooling coil pipe and its pipeline pressure loss among the water route system, the water pump can be frequency conversion control, adjusts flow for the regulation and the control of temperature, and then control natural cooling coil pipe's refrigerating output.
(6) The utility model discloses in, adopt the water route three-way valve to be used for adjusting bypass natural cooling coil's discharge among the water route system for the regulation and the control of temperature, and then control natural cooling coil's refrigerating output.
Drawings
FIG. 1 is a schematic configuration diagram of a free cooling refrigeration system according to embodiment 1;
FIG. 2 is a schematic configuration diagram of a free cooling refrigeration system according to embodiment 2;
FIG. 3 is a schematic configuration diagram of a free cooling refrigeration system according to embodiment 3;
FIG. 4 is a schematic configuration diagram of a free cooling refrigeration system according to embodiment 4;
fig. 5 is a schematic structural view of the free cooling refrigeration system in embodiment 5.
In the figure, 1, a compressor; 2. an oil separator; 3. a first filter; 4. an air-cooled condenser; 5. a first circuit; 6. a second filter; 7. a flash economizer; 8. a second loop; 9. an evaporator; 10. a natural cooling system; 101. naturally cooling the coil pipe; 102. naturally cooling the coil assembly; 103. a water inlet pipeline; 104. a water outlet pipeline; 105. a plate heater; 106. a first water pump; 107. a second water pump; 108. a linear three-way valve; 11. a first waterway stop valve; 12. a second waterway stop valve; 13. a first stage electronic expansion valve; 14. a second stage electronic expansion valve; 15. a stop valve; 16. a one-way valve; 17. and a third-stage electronic expansion valve.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings of fig. 1 to 5. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
Example 1: a natural cooling refrigeration system is disclosed, as shown in figure 1, a compressor 1 is respectively communicated with an oil separator 2, an evaporator 9 and a flash evaporation type economizer 7, one end of the oil separator 2 is communicated with an air-cooled condenser 4, the other end of the oil separator 2 is communicated with a first filter 3, the compressor 1, the oil separator 2 and the first filter 3 form a first loop 5, one end of a second filter 6 is communicated with the air-cooled condenser 4, the other end of the second filter is communicated with the flash evaporation type economizer 7, the flash evaporation type economizer 7 is mutually communicated with the compressor 1, the oil separator 2, the air-cooled condenser 4, the second filter 6 and the flash evaporation type economizer 7 form a second loop 8, and a first-stage electronic expansion valve 13 is installed between the second filter 6 and the flash evaporation type economizer 7.
The flash evaporation type economizer 7 is communicated with the evaporator 9, the second-stage electronic expansion valve 14 is installed between the flash evaporation type economizer 7 and the evaporator 9, the flash evaporation type economizer 7 is communicated with the compressor 1, a stop valve 15, a one-way valve 16 and a third-stage electronic expansion valve 17 are sequentially communicated between the flash evaporation type economizer 7 and the compressor 1, the evaporator 9 is connected with a natural cooling system 10, the natural cooling system 10 comprises a natural cooling coil 101, a natural cooling coil assembly 102, a water inlet pipeline 103, a water outlet pipeline 104, a plate heater 105, a first water pump 106, a second water pump 107 and a linear three-way valve 108, a water channel of the natural cooling coil 101 is connected with a water channel of the refrigeration system evaporator 9 in series, the natural cooling coil 101 is installed on the outer side of the air-cooled condenser 4, the surfaces of the natural cooling coil 101 and the air-cooled condenser are completely attached, the evaporator 9 is communicated with the plate heat, the linear three-way valve 108 is communicated with the plate heat exchanger and the second waterway stop valve 12, the first water pump 106 is installed between the second waterway stop valve 12 and the linear three-way valve 108, and the linear three-way valve 108 is installed on the water inlet pipeline 103.
The high-temperature and high-pressure exhaust gas of a compressor 1 flows through an oil separator 2, the lubricating oil is separated from the oil separator 2, the separated lubricating oil returns to the compressor 1 through a first filter 3, the exhaust gas enters an air-cooled condenser 4 to be condensed into high-temperature and high-pressure refrigerant liquid, then flows through a second filter 6 and a first-stage electronic expansion valve 13 to throttle a mixture of the refrigerant liquid and gas which are depressurized to medium temperature and medium pressure, then flows through a flash evaporation type economizer 7, in the flash evaporation type economizer 7, the gas is supplied to an economizer gas supplementing port of the compressor 1 through a stop valve 15, a one-way valve 16 and an electronic expansion valve in sequence, in the flash evaporation type economizer 7, the liquid flows through a second-stage electronic expansion valve 14 to be throttled to a mixture of the low-temperature and low-pressure refrigerant liquid and gas, then enters an evaporator 9, in the evaporator 9, the refrigerant absorbs the heat, and the refrigerant returns to the air suction port of the compressor 1 through the air suction pipe to complete a refrigeration cycle, and the heat transfer quantity generated by the temperature reduction of the chilled water is the refrigeration quantity.
The air flow generated by the fan flows through the natural cooling coil 101 and the air-cooled condenser 4 in series, and the length and the width of the two heat exchangers are the same, so that the two heat exchangers are completely attached and air leakage is avoided.
One side of the heat exchanger is the inflow of the evaporator 9, the other side is a natural cooling loop, the purpose of the plate heat exchanger is to realize that the evaporator 9 water path and the natural cooling coil water path of the refrigeration system conduct heat, the water path on one side of the evaporator 9 can be water, and the loop pipe of the natural cooling coil 101 can be water, glycol EG or PG solution, that is, the natural cooling coil 101 can operate below the freezing point, while the evaporator 9 still operates above the freezing point, thereby ensuring that the natural cooling coil 101 can still operate at a lower ambient temperature of-30 ℃.
The linear three-way valve 108 is used to adjust the water flow entering the free cooling coil 101 and the water flow bypassing the free cooling coil 101, and is used to control the outlet water temperature of the free cooling coil 101. A first water pump 106 is arranged on a water path of the natural cooling coil 101, so that the water path circulation is ensured, and the pressure drop loss of the water path at the plate type heat exchanger, the natural cooling coil 101 and the pipeline is overcome.
For example, the design requires that the return water temperature of the chilled water of the evaporator 9 is 18 ℃, the outlet water temperature of the chilled water of the evaporator 9 is 7 ℃, the environment temperature is-5 ℃, the chilled return water of the evaporator 9 flows through the plate heat exchanger, passes through the plate heat exchanger, and the high-temperature return water of the evaporator 9 exchanges heat with the water channel of the natural cooling coil 101. In the natural cooling coil pipe 101, after heat exchange is carried out between the inlet water temperature of the natural cooling coil pipe 101 and the environment temperature of minus 5 ℃, the heat of water is transferred to the air, the water temperature is reduced, namely the outlet water temperature of the coil pipe of the natural cooling coil pipe 101 is reduced to 9 ℃, in the plate heat exchanger, the outlet water of the natural cooling coil pipe 101 at 9 ℃ can absorb the heat of the return water of the evaporator 9, the return water temperature of the evaporator 9 is reduced to 12 ℃ from 18 ℃, the outlet water temperature of the natural cooling coil pipe 101 is increased to 15 ℃, the water at 12 ℃ flows through the evaporator 9, the temperature is reduced to 7 ℃, and the waterway circulation of the evaporator 9 and the waterway circulation of the natural cooling coil pipe 101 are completed.
For the impact of data centers, year-round refrigeration applications are required, with both the lower winter ambient temperatures and the higher summer ambient temperatures, the refrigeration system operating in a refrigeration cycle to provide a stable chilled water supply temperature, such as a 7 ℃ supply temperature, and if the chilled water is a glycol solution, a supply temperature of about-7 ℃. Owing to when the operation under low ambient temperature, in order to guarantee minimum compressor 1's fuel feeding pressure differential, so need be through opening and close the fan or reduce fan operation rotational speed in order to guarantee minimum condensation temperature, consequently even ambient temperature continues to reduce, condensation temperature also can not further reduce, so refrigerating system's operating efficiency can not further improve, if ambient temperature is less than when refrigerating system's evaporimeter 9's refrigerated water leaving water temperature this moment, can close refrigerating system, promptly through natural cooling coil pipe 101, the heat load can give off in the environment, the temperature reduces, high temperature water and microthermal air in the natural cooling coil pipe 101 carry out the heat transfer, the temperature of water reduces to the refrigerated water leaving water temperature, and the air is heated, the heat gives off in the air.
Example 2: as shown in fig. 1 and 2, the water path system of the evaporator 9 and the water path system of the natural cooling coil 101 are connected in series, and a second water pump 107 is installed on the water return line of the evaporator 9 to overcome the pressure drop loss of the water path of the evaporator 9 flowing through the plate heat exchanger.
Example 3: as shown in fig. 1 and 3, the water path system of the evaporator 9 and the water path system of the natural cooling coil 101 are connected in series, but a direct connection mode is adopted, a plate heat exchanger is omitted, that is, the two water path systems are mixed together, the linear three-way valve 108 is communicated with the evaporator 9, the first water path stop valve 11 and the second water path stop valve 12, the first water pump 106 is installed between the second water path stop valve 12 and the linear three-way valve 108, and the linear three-way valve 108 is installed on the water outlet pipeline 104.
The heat transfer capacity (cooling capacity) of the free cooling coil 101 is controlled by adjusting the flow of water into the free cooling coil 101 through a linear three-way valve 108 in a water circuit system configured with a first water pump 106 to overcome pressure drop losses through the free cooling coil 101 and the piping. Without plate heat exchange, for the operation at the ambient temperature below the freezing point, the water path of the evaporator 9 should use the solution of ethylene glycol EG or PG with the freezing point temperature lower than 0 ℃, without plate heat exchanger, without heat transfer temperature difference of the evaporator 9, eliminating the loss.
Example 4: as shown in fig. 1 and 4, the water path system of the evaporator 9 and the water path system of the natural cooling coil 101 are connected in parallel, the first water path stop valve 11 and the second water path stop valve 12 are used for closing the natural cooling circuit, the first water pump 106 is communicated with the second water path stop valve 12, and the first water pump 106 is used for overcoming the pressure drop loss on the water side.
Example 5: as shown in fig. 1 and 5, the natural cooling coil 101 is not installed outside the air-cooled condenser 4 of the refrigeration system, but is externally installed with a natural cooling coil assembly 102, the water path system is the same as the integral natural cooling coil 101, the evaporator 9 is communicated with the plate heat exchanger, the first water path stop valve 11 and the second water path stop valve 12 are communicated with the external natural cooling coil assembly 102, the first water pump 106 is communicated with the second water path stop valve 12, and the linear three-way valve 108 is installed on the water outlet pipe 104.
In this environment, the air side condenser and the free cooling coil 101 of the refrigeration system can be better and independently controlled. For example, the integral free cooling coil 101 is designed to give priority to the protection of the operation of the refrigeration system, and in order to ensure a sufficient oil supply pressure difference of the compressor 1, a minimum condensing temperature must be maintained, and the condensing temperature can be increased by starting or stopping the fan or reducing the rotation speed of the fan. However, if the fan speed is reduced, the cooling capacity of the free cooling coil 101 is reduced. Then with the external free cooling coil 101 design, the control of the free cooling coil 101 is independent of the control of the refrigeration system. For example, the fan speed of the free cooling coil 101 can be independently ensured to be higher, so that the cooling capacity of the free cooling coil 101 can be ensured, and the refrigeration system can be turned off and only the free cooling coil 101 can be operated at a lower ambient temperature.
The above description is provided for further details of the present invention with reference to the specific embodiments, which should not be construed as limiting the present invention; to the utility model discloses affiliated and relevant technical field's technical personnel are based on the utility model discloses under the technical scheme thinking prerequisite, the extension of doing and the replacement of operating method, data all should fall within the utility model discloses within the protection scope.
Claims (8)
1. A free-cooling refrigeration system comprising a compressor (1), characterized in that: the oil separator (2) is communicated with the compressor (1), the oil separator (2) is respectively communicated with the first filter (3) and the air-cooled condenser (4), the compressor (1) is communicated with the first filter (3), the compressor (1), the oil separator (2) and the first filter (3) form a first loop (5), the air-cooled condenser (4) is communicated with the second filter (6), the bottom of the second filter (6) is communicated with the flash evaporation type economizer (7), the flash evaporation type economizer (7) is communicated with the compressor (1), the oil separator (2), the air-cooled condenser (4), the second filter (6) and the flash evaporation type economizer (7) form a second loop (8), the flash evaporation type economizer (7) is communicated with the evaporator (9), and the evaporator (9) is provided with a natural cooling system (10), the natural cooling system (10) comprises a natural cooling coil (101), a natural cooling coil assembly (102), a water inlet pipeline (103), a water outlet pipeline (104), a plate heater (105), a first water pump (106), a second water pump (107) and a linear three-way valve (108), the water channel of the natural cooling system (10) is communicated with the water channel of the evaporator (9) in series or in parallel, the natural cooling system (10) is of an integral structure or an external separation structure, and the natural cooling system (10) is communicated with a first water channel stop valve (11) arranged on the water inlet pipeline (103) and a second water channel stop valve (12) arranged on the water outlet pipeline (104).
2. A free-cooling refrigeration system as set forth in claim 1 wherein: the natural cooling coil (101) is arranged on the outer side of the air-cooled condenser (4), and the surface of the natural cooling coil (101) is completely attached to the surface of the air-cooled condenser (4).
3. A free-cooling refrigeration system as set forth in claim 1 wherein: the natural cooling coil assembly (102) is external relative to the air-cooled condenser (4), the evaporator (9) is communicated with the plate heat exchanger, the first water path stop valve (11) and the second water path stop valve (12) are communicated with the natural cooling coil assembly (102), the first water pump (106) is communicated with the second water path stop valve (12), and the linear three-way valve (108) is installed on the water outlet pipeline (104).
4. A free-cooling refrigeration system as set forth in claim 2 wherein: first water route stop valve (11) communicate in linear three-way valve (108), linear three-way valve (108) still communicate in plate heat exchanger and second water route stop valve (12), first water pump (106) are located between second water route stop valve (12) and linear three-way valve (108), linear three-way valve (108) are installed on water inlet pipe (103).
5. A free-cooling refrigeration system as set forth in claim 4 wherein: and the second water pump (107) is communicated between the evaporator (9) and the plate heat exchanger.
6. A free-cooling refrigeration system as set forth in claim 2 wherein: the linear three-way valve (108) is communicated with the evaporator (9), the linear three-way valve (108) is communicated with the first waterway stop valve (11) and the second waterway stop valve (12), and the first water pump (106) is arranged between the second waterway stop valve (12) and the linear three-way valve (108).
7. A free-cooling refrigeration system as set forth in claim 2 wherein: and a water path system of the natural cooling system (10) is connected with a water path system of the evaporator (9) in parallel.
8. A free-cooling refrigeration system as set forth in claim 1 wherein: a first-stage electronic expansion valve (13) is communicated between the second filter (6) and the flash evaporation type economizer (7), a second-stage electronic expansion valve (14) is communicated between the flash evaporation type economizer (7) and the evaporator (9), and a stop valve (15), a one-way valve (16) and a third-stage electronic expansion valve (17) are sequentially communicated between the flash evaporation type economizer (7) and the compressor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921765136.6U CN210861760U (en) | 2019-10-21 | 2019-10-21 | Natural cooling refrigerating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921765136.6U CN210861760U (en) | 2019-10-21 | 2019-10-21 | Natural cooling refrigerating system |
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| CN210861760U true CN210861760U (en) | 2020-06-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631281A (en) * | 2019-10-21 | 2019-12-31 | 无锡职业技术学院 | Natural cooling refrigerating system |
| CN114198951A (en) * | 2021-05-31 | 2022-03-18 | 浙江青风环境股份有限公司 | Double-effect integrated refrigerating unit with natural cooling function and refrigerating method thereof |
-
2019
- 2019-10-21 CN CN201921765136.6U patent/CN210861760U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631281A (en) * | 2019-10-21 | 2019-12-31 | 无锡职业技术学院 | Natural cooling refrigerating system |
| CN114198951A (en) * | 2021-05-31 | 2022-03-18 | 浙江青风环境股份有限公司 | Double-effect integrated refrigerating unit with natural cooling function and refrigerating method thereof |
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Effective date of registration: 20240108 Address after: 214000 Yinxiu Road 813-417, 813-418, 813-419, Binhu District, Wuxi City, Jiangsu Province Patentee after: Wuxi Hongli HVAC Equipment Co.,Ltd. Address before: 214000 No. 1600, Gao Lang Xi Road, Binhu District, Wuxi, Jiangsu Patentee before: WUXI INSTITUTE OF TECHNOLOGY |
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