CN105910348A - Fin heat exchanger of low-temperature refrigerating system - Google Patents
Fin heat exchanger of low-temperature refrigerating system Download PDFInfo
- Publication number
- CN105910348A CN105910348A CN201610414765.9A CN201610414765A CN105910348A CN 105910348 A CN105910348 A CN 105910348A CN 201610414765 A CN201610414765 A CN 201610414765A CN 105910348 A CN105910348 A CN 105910348A
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- China
- Prior art keywords
- condenser
- compressor
- heat exchanger
- way valve
- inlet end
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/22—Disposition of valves, e.g. of on-off valves or flow control valves between evaporator and compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/02—Compression machines, plants or systems, with several condenser circuits arranged in parallel
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses a fin heat exchanger of a low-temperature refrigerating system. The fin heat exchanger comprises a compressor, a high-pressure sensor, an electromagnetic three-way valve, a one-way valve, a first condenser, a second condenser, a liquid accumulator, an expansion valve, an evaporator and a gas-liquid separator, wherein the outlet end of the compressor is connected with the inlet end of the electromagnetic three-way valve; two outlet ends of the electromagnetic three-way valve are separately connected with the inlet end of the first condenser and the inlet end of the second condenser; the one-way valve is connected between the inlet end of the first condenser and the inlet end of the second condenser; the outlet end of the first condenser and the outlet end of the second condenser are in parallel connected, and are connected with the inlet end of the compressor after being sequentially connected with the liquid accumulator, the expansion valve, the evaporator and the gas-liquid separator; and the high-pressure sensor is connected between the compressor and the electromagnetic three-way valve. The fin heat exchanger can be used for an industrial air conditioner or a water cooler which is required to be subjected to low-temperature refrigeration, can overcome the problem that the system reliability is reduced due to sharp drop of a condensing temperature, can increase the flow velocity of a refrigerating fluid in the condenser, and can effectively bring lubricating oil into a crank case of the compressor.
Description
Technical field
The present invention relates to cryogenic refrigerating system field, specifically a kind of cryogenic refrigerating system finned heat exchanger.
Background technology
Air-conditioned room is freezed or provides coolant by ultralow ambient temperature, is the most progressively widely applied.Owing to air-conditioned room being carried out under low ring greenhouse external environment or providing coolant, condensing pressure can be difficult to set up, the compression ratio causing compressor is unable to reach requirement and causes compressor damage, so effective measures must be had at low ambient temperatures to improve condensation temperature, at present, general method is to raise condensing pressure by minimizing condensation air quantity, but the further reduction along with outdoor environment temperature, ambient temperature drops to the lowest when, heat transfer temperature difference strengthens, conduction of heat heat exchange aggravates, still result in the problem that condensing pressure cannot be set up, simultaneously, if use the method changing condensation air quantity, the probability of fan electromotor damage can be increased and compressor lubricant oil cannot be taken to compressor crankcase owing to refrigeration stream prompt drop is low.
Summary of the invention
It is an object of the invention to provide a kind of cryogenic refrigerating system finned heat exchanger, by increasing by one group of check valve in refrigeration systems and one group of three-way solenoid valve adjusts the use of finned cooler, to reach to keep the purpose of condensation temperature, the problem that condensing pressure cannot effectively be set up when cryogenic refrigeration can be solved, can effectively prevent the situation that refrigeration system condensing pressure is too low, and the flow velocity of cold-producing medium in heat exchanger can also be effectively improved, effective band oil.
Technical scheme is as follows:
A kind of cryogenic refrigerating system finned heat exchanger, include compressor, high pressure sensor, three-way solenoid valve, check valve, first, second condenser, reservoir, expansion valve, vaporizer and gas-liquid separator, it is characterized in that: the port of export of described compressor is connected with the entrance point of described three-way solenoid valve, two ports of export of described three-way solenoid valve are respectively with described first, the entrance point of the second condenser is connected, described check valve is connected to described first, between the entrance point of the second condenser, described first, the port of export of the second condenser is in parallel and is sequentially connected with described reservoir, expansion valve, after vaporizer and gas-liquid separator, it is connected with the entrance point of described compressor；Described high pressure sensor is connected between described compressor and three-way solenoid valve.
Described cryogenic refrigerating system finned heat exchanger, it is characterised in that: first, second described condenser is finned cooler.
Described cryogenic refrigerating system finned heat exchanger, it is characterised in that: described vaporizer is plate-type evaporator.
Described cryogenic refrigerating system finned heat exchanger, it is characterised in that: described expansion valve is heating power expansion valve.
In cryogenic refrigerating system designs, the general method of general employing is to raise condensing pressure by minimizing condensation air quantity, but the further reduction along with outdoor environment temperature, ambient temperature drops to the lowest when, heat transfer temperature difference strengthens, conduction of heat heat exchange aggravates, still result in the problem that condensing pressure cannot be set up, simultaneously, if use the method changing condensation air quantity, the probability of fan electromotor damage can be increased and compressor lubricant oil cannot be taken to compressor crankcase owing to refrigeration stream prompt drop is low.The present invention can be used for being there is a need in the industrial air-conditioning or cooling-water machine of cryogenic refrigeration, the problem that the system reliability caused due to the great decline of condensation temperature declines can be overcome, the flow velocity of cold-producing medium in condenser can be improved again simultaneously, effectively bring lubricating oil into compressor crankcase.
The present invention increases by one group of three-way solenoid valve and check valve and heat exchanger is divided into two parts.When the condensing pressure of refrigeration system is higher when, two groups of condensers all come into operation, and when the condensing pressure of refrigeration system is less than safety value, make only one group heat exchanger come into operation after electromagnetic three-way Vavle switching.
Beneficial effects of the present invention:
1, the present invention can be the same with other cryogenic refrigerating systems, regulates condensing pressure ambient temperature is relatively low when.
2, the present invention increases by one group of three-way solenoid valve and check valve and finned heat exchanger is divided into two parts, when the condensing pressure of refrigeration system is less than safety value, by three-way solenoid valve and check valve effect, only one group heat exchanger is come into operation, refrigeration system condensing pressure is made to be unlikely to reduce excessive, it is ensured that system reliability.
3, the present invention increases by one group of three-way solenoid valve and check valve and finned heat exchanger is divided into two parts, when the condensing pressure of refrigeration system is less than safety value, by three-way solenoid valve and check valve effect, only one group heat exchanger is come into operation, refrigeration system condensing pressure is made to be unlikely to reduce excessive, ensure that the flow velocity of cold-producing medium, it is ensured that system oil return reliability simultaneously.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Detailed description of the invention
See Fig. 1, a kind of cryogenic refrigerating system finned heat exchanger, include compressor 1, high pressure sensor 2, three-way solenoid valve 3, check valve 4, first, second condenser 5, 6, reservoir 7, expansion valve 8, vaporizer 9 and gas-liquid separator 10, the port of export of compressor 1 is connected with the entrance point of three-way solenoid valve 3, two ports of export of three-way solenoid valve 3 are respectively with first, second condenser 5, the entrance point of 6 is connected, check valve 4 is connected to first, second condenser 5, between the entrance point of 6, first, second condenser 5, the port of export of 6 is in parallel and is sequentially connected with reservoir 7, expansion valve 8, after vaporizer 9 and gas-liquid separator 10, it is connected with the entrance point of compressor 1；High pressure sensor 2 is connected between compressor 1 and three-way solenoid valve 3.
In the present invention, first, second condenser 5,6 is finned cooler.
Vaporizer 9 is plate-type evaporator.
Expansion valve 8 is heating power expansion valve.
Below in conjunction with accompanying drawing, the present invention is further illustrated:
After unit brings into operation, high pressure sensor 2 detect pressure more than setting value time, three-way solenoid valve 3 is in the raw, entrance point and second condenser 6 of three-way solenoid valve 3 communicate, the high temperature and high pressure steam that compressor 1 is discharged divides two-way, one tunnel enters the second condenser 6, another road enters the first condenser 5 through check valve 4, after the condensation of two condensers is absorbed heat, refrigeration becomes the cold-producing medium subcooled liquid of High Temperature High Pressure and enters reservoir 7, enter vaporizer 9 through heating power expansion valve 8 reducing pressure by regulating flow again and carry out heat exchange, afterwards, compressor 1 is entered through gas-liquid separator 10 from the vaporizer 9 superheated refrigerant steam after heat exchange, re-enter next one kind of refrigeration cycle.
After unit operation, high pressure sensor 2 detect pressure below setting value time, three-way solenoid valve 3 coil obtains electric, entrance point and first condenser 5 of three-way solenoid valve 3 communicate, the high temperature and high pressure steam that compressor 1 is discharged enters the first condenser 5, obstruct cold-producing medium through check valve 4 cannot be introduced into the second condenser 6, thus reach to increase the purpose of condensing pressure, through the heat exchange with the first condenser 5, cold-producing medium becomes the cold-producing medium subcooled liquid of High Temperature High Pressure and enters reservoir 7, enter vaporizer 9 through thermal expansion 8 valve reducing pressure by regulating flow again and carry out heat exchange, afterwards, compressor 1 is entered through gas-liquid separator 10 from the vaporizer 9 superheated refrigerant steam after heat exchange, re-enter next one kind of refrigeration cycle.
Claims (4)
1. a cryogenic refrigerating system finned heat exchanger, include compressor, high pressure sensor, three-way solenoid valve, check valve, first, second condenser, reservoir, expansion valve, vaporizer and gas-liquid separator, it is characterized in that: the port of export of described compressor is connected with the entrance point of described three-way solenoid valve, two ports of export of described three-way solenoid valve are respectively with described first, the entrance point of the second condenser is connected, described check valve is connected to described first, between the entrance point of the second condenser, described first, the port of export of the second condenser is in parallel and is sequentially connected with described reservoir, expansion valve, after vaporizer and gas-liquid separator, it is connected with the entrance point of described compressor；Described high pressure sensor is connected between described compressor and three-way solenoid valve.
Cryogenic refrigerating system finned heat exchanger the most according to claim 1, it is characterised in that: first, second described condenser is finned cooler.
Cryogenic refrigerating system finned heat exchanger the most according to claim 1, it is characterised in that: described vaporizer is plate-type evaporator.
Cryogenic refrigerating system finned heat exchanger the most according to claim 1, it is characterised in that: described expansion valve is heating power expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610414765.9A CN105910348A (en) | 2016-06-06 | 2016-06-06 | Fin heat exchanger of low-temperature refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610414765.9A CN105910348A (en) | 2016-06-06 | 2016-06-06 | Fin heat exchanger of low-temperature refrigerating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105910348A true CN105910348A (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610414765.9A Pending CN105910348A (en) | 2016-06-06 | 2016-06-06 | Fin heat exchanger of low-temperature refrigerating system |
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| CN (1) | CN105910348A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109477696A (en) * | 2016-09-09 | 2019-03-15 | 株式会社电装 | Device temperature regulating device |
| CN113418313A (en) * | 2021-06-08 | 2021-09-21 | 瀚润联合高科技发展（北京）有限公司 | Injection evaporative cooling air-cooled heat pump module unit |
| CN114396373A (en) * | 2022-01-28 | 2022-04-26 | 烟台珈群高效节能设备有限公司 | Oil cooling subsystem of evaporative condenser |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201251317Y (en) * | 2008-07-30 | 2009-06-03 | 菲尼克斯(上海)环境控制技术有限公司 | Air conditioner with variable condensing area |
| CN101986062A (en) * | 2010-11-15 | 2011-03-16 | 大连三洋压缩机有限公司 | Condensation temperature-adjusting refrigeration system |
| CN202915609U (en) * | 2012-11-14 | 2013-05-01 | 合肥天鹅制冷科技有限公司 | Air-cooling type condenser |
| CN203405032U (en) * | 2013-06-18 | 2014-01-22 | 广东美的暖通设备有限公司 | Condenser with adjustable heat exchange area and air conditioning system |
| CN105423587A (en) * | 2014-09-18 | 2016-03-23 | 浙江盾安机电科技有限公司 | Year-round cooling system |
| CN205690755U (en) * | 2016-06-06 | 2016-11-16 | 合肥天鹅制冷科技有限公司 | Cryogenic refrigerating system finned heat exchanger |
-
2016
- 2016-06-06 CN CN201610414765.9A patent/CN105910348A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201251317Y (en) * | 2008-07-30 | 2009-06-03 | 菲尼克斯(上海)环境控制技术有限公司 | Air conditioner with variable condensing area |
| CN101986062A (en) * | 2010-11-15 | 2011-03-16 | 大连三洋压缩机有限公司 | Condensation temperature-adjusting refrigeration system |
| CN202915609U (en) * | 2012-11-14 | 2013-05-01 | 合肥天鹅制冷科技有限公司 | Air-cooling type condenser |
| CN203405032U (en) * | 2013-06-18 | 2014-01-22 | 广东美的暖通设备有限公司 | Condenser with adjustable heat exchange area and air conditioning system |
| CN105423587A (en) * | 2014-09-18 | 2016-03-23 | 浙江盾安机电科技有限公司 | Year-round cooling system |
| CN205690755U (en) * | 2016-06-06 | 2016-11-16 | 合肥天鹅制冷科技有限公司 | Cryogenic refrigerating system finned heat exchanger |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109477696A (en) * | 2016-09-09 | 2019-03-15 | 株式会社电装 | Device temperature regulating device |
| CN109477696B (en) * | 2016-09-09 | 2021-04-09 | 株式会社电装 | Equipment temperature adjusting device |
| CN113418313A (en) * | 2021-06-08 | 2021-09-21 | 瀚润联合高科技发展（北京）有限公司 | Injection evaporative cooling air-cooled heat pump module unit |
| CN114396373A (en) * | 2022-01-28 | 2022-04-26 | 烟台珈群高效节能设备有限公司 | Oil cooling subsystem of evaporative condenser |
| CN114396373B (en) * | 2022-01-28 | 2024-01-16 | 烟台珈群高效节能设备有限公司 | Oil cooling subsystem for evaporative condenser |
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Application publication date: 20160831 |
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| RJ01 | Rejection of invention patent application after publication |