CN104807276B - Three-level staged cooling ultra low temperature cool house - Google Patents
Three-level staged cooling ultra low temperature cool house Download PDFInfo
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- CN104807276B CN104807276B CN201510228103.8A CN201510228103A CN104807276B CN 104807276 B CN104807276 B CN 104807276B CN 201510228103 A CN201510228103 A CN 201510228103A CN 104807276 B CN104807276 B CN 104807276B
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- 238000001816 cooling Methods 0.000 title claims abstract description 20
- 238000005057 refrigeration Methods 0.000 claims abstract description 101
- 239000003507 refrigerant Substances 0.000 claims description 34
- 230000008676 import Effects 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- 238000010025 steaming Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002681 cryosurgery Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D13/00—Stationary devices, e.g. cold-rooms
-
- 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
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
- F25D19/04—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors with more than one refrigeration unit
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
-
- 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
- F25B2600/00—Control issues
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a kind of three-level staged cooling ultra low temperature cool house, the staged cooling of freezer is realized, operating cost is saved, reduces energy consumption, run more stable.Including grim strategy and three-level refrigeration system.Three-level refrigeration system includes high-temperature level refrigeration system, middle temperature level refrigeration system and low-temperature level refrigeration system；High-temperature level refrigeration system includes high-temperature level refrigeration unit, the first high-temperature level magnetic valve, the second high-temperature level magnetic valve and the air-cooled evaporator of high-temperature level.Middle temperature level refrigeration system includes middle temperature level refrigeration unit, the first middle temperature level magnetic valve, the second middle temperature level magnetic valve and the middle air-cooled evaporator of temperature level, and low-temperature level refrigeration system includes low-temperature level refrigeration unit, low-temperature level magnetic valve and the air-cooled evaporator of low-temperature level.More than 30 DEG C are only run high-temperature level refrigeration system, and high-temperature level refrigeration system and middle temperature level refrigeration system are operated above at 75 DEG C, and less than 75 DEG C three-level refrigeration systems operations are cooled using staged, save operating cost, reduce energy consumption.
Description
Technical field
It is to be related to a kind of three-level staged cooling ultra low temperature cool house in particular the present invention relates to ultra low temperature cool house.
Background technology
At present, ultra low temperature cool house is used for cryosurgery, low-temperature storage and provides the special occasions, state such as low-temperature test environment
Interior ultra low temperature cool house is less, and folding type cooling system is used refrigeration system more.
During using traditional three-level cascade refrigeration, high-temperature level, middle temperature level and low-temperature level refrigeration system start successively, finally by low
Warm level refrigerant sweat cooling in air-cooled evaporator.It is restricted to the pressure ratio of every one-level in view of this refrigeration modes,
Meet three-level pressure ratio it is roughly equal when middle temperature level refrigerant can be caused to produce negative pressure, low temperature when middle temperature level refrigeration system is run
Level refrigerant, close to negative pressure, in turn results in whole refrigeration system fluctuation of service, middle temperature level when low-temperature level refrigeration system is run
The consequence such as shut down with low-temperature level refrigeration compressor, and three-level initial stage for cooling in freezer when all running can cause efficiency very low shadow
Ring.
The content of the invention
In view of the technical drawbacks of the prior art, it is an object of the present invention to provide a kind of cooling of three-level staged is super
Low-temperature cold store, realizes the staged cooling of freezer, saves operating cost, reduce energy consumption, run more stable.
To realize that the technical scheme that the purpose of the present invention is used is：
A kind of three-level staged cooling ultra low temperature cool house, including grim strategy and three-level refrigeration system, the three-level
Refrigeration system includes high-temperature level refrigeration system, middle temperature level refrigeration system and low-temperature level refrigeration system；The high-temperature level refrigeration system
It is described including high-temperature level refrigeration unit, the first high-temperature level magnetic valve, the second high-temperature level magnetic valve and the air-cooled evaporator of high-temperature level
Middle temperature level refrigeration system includes middle temperature level refrigeration unit, the first middle temperature level magnetic valve, the second middle temperature level magnetic valve and middle temperature level wind
Cold type evaporator, the low-temperature level refrigeration system includes low-temperature level refrigeration unit, low-temperature level magnetic valve and the air-cooled steaming of low-temperature level
Send out device；The air-cooled evaporator of high-temperature level, the middle air-cooled evaporator of temperature level and the air-cooled evaporator of low-temperature level are placed in described
In freezer enclosed structure；The refrigerant outlet of the high-temperature level refrigeration unit high temperature condenser/evaporator is high with described first respectively
The import connection of warm level magnetic valve and the second high-temperature level magnetic valve, outlet and the high-temperature level of the first high-temperature level magnetic valve
The import connection of air-cooled evaporator, the outlet of the air-cooled evaporator of high-temperature level and the high temperature of the high-temperature level refrigeration unit
The refrigerant inlet connection of level compressor；In in the outlet of the second high-temperature level magnetic valve and the middle temperature level refrigeration unit
The refrigerant inlet connection of warm level condenser/evaporator, the refrigerant outlet of the middle temperature level condenser/evaporator is respectively with described first
The import connection of middle temperature level magnetic valve and the second middle temperature level magnetic valve, outlet and the middle temperature of the first middle temperature level magnetic valve
The import connection of the air-cooled evaporator of level, in the outlet of the middle air-cooled evaporator of temperature level and the middle temperature level refrigeration unit
The refrigerant inlet connection of warm level compressor；In the outlet of the second middle temperature level magnetic valve and the low-temperature level refrigeration unit
The import connection of low-temperature level heat exchanger, the refrigerant outlet of the low-temperature level heat exchanger by the low-temperature level magnetic valve with it is described
The import connection of the air-cooled evaporator of low-temperature level, outlet and the low-temperature level refrigeration unit of the air-cooled evaporator of low-temperature level
Low-temperature level compressor refrigerant inlet connection；When storehouse temperature is higher than -30 DEG C, in the second high-temperature level magnetic valve, first
Warm level magnetic valve, the second middle temperature level magnetic valve and low-temperature level closed electromagnetic valve, the first high-temperature level magnetic valve are opened；Work as temperature
When being down to -30 DEG C, the second high-temperature level magnetic valve, the first middle temperature level magnetic valve are opened, the first high-temperature level magnetic valve, the
Two middle temperature level magnetic valves and low-temperature level closed electromagnetic valve；When temperature is down to -75 DEG C, the second high-temperature level magnetic valve, second
Middle temperature level magnetic valve and low-temperature level magnetic valve are opened, the first high-temperature level magnetic valve, the first middle temperature level closed electromagnetic valve.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, three-level staged of the invention cooling freezer, allows every one-level refrigeration system to have cold output, realizes freezer
Staged cools.
2nd, freezer of the invention, in freezer, more than -30 DEG C are only run high-temperature level refrigeration systems, be down to more than -75 DEG C, -
Less than 30 DEG C operation high-temperature level refrigeration systems and middle temperature level refrigeration system, less than -75 DEG C just three-level refrigeration system be switched on, can
Operating cost is saved, energy consumption is reduced.
3rd, freezer of the invention, is to open successively per one-level refrigeration system, solves traditional three-level refrigeration system while opening
Pressure of inspiration(Pi) is too high when beginning to run, and operation mid-term condensing pressure is too low, and the problem of system operation is unstable, system operation is more steady
It is fixed.
Brief description of the drawings
Fig. 1 show the schematic diagram of three-level staged cooling ultra low temperature cool house of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
The structural representation of three-level staged cooling ultra low temperature cool house of the present invention is as shown in figure 1, including grim strategy 1
With three-level refrigeration system.The three-level refrigeration system includes high-temperature level refrigeration system, middle temperature level refrigeration system and low-temperature level refrigeration
System.The high-temperature level refrigeration system includes high-temperature level refrigeration unit 2, the first high-temperature level magnetic valve 3, the second high-temperature level magnetic valve
4 and the air-cooled evaporator 10 of high-temperature level.The control of first high-temperature level magnetic valve 3 leads to the air-cooled evaporator 10 of high-temperature level in ultralow temperature
Cold is exported in storehouse, the second high-temperature level magnetic valve 4 leads to middle temperature level refrigeration unit 5, for cooling down middle temperature level refrigerant.In described
Warm level refrigeration system includes middle temperature level refrigeration unit 5, the first middle temperature level magnetic valve 6, the second middle temperature level magnetic valve 7 and middle temperature level wind
Cold type evaporator 11.The middle control of temperature level magnetic valve 6 exports cold towards the air-cooled evaporator 11 of middle temperature level in ultralow cold storage, the
Two middle temperature level magnetic valves 7 lead to low-temperature level refrigeration unit 8, for cooling down low-temperature level refrigerant.The low-temperature level refrigeration system bag
Include low-temperature level refrigeration unit 8, low-temperature level magnetic valve 9 and the air-cooled evaporator 12 of low-temperature level.The control of low-temperature level magnetic valve 9 is led to low
The warm air-cooled evaporator 12 of level exports cold in ultralow cold storage.The air-cooled evaporator 10 of high-temperature level, middle temperature level are air-cooled
Evaporator 11 and the air-cooled evaporator 12 of low-temperature level are placed in the freezer enclosed structure.In the high-temperature level refrigeration unit 2
The refrigerant outlet of high temperature condenser/evaporator enters with the first high-temperature level magnetic valve 3 and the second high-temperature level magnetic valve 4 respectively
Mouth connection, the outlet of the first high-temperature level magnetic valve 3 is connected with the import of the air-cooled evaporator of the high-temperature level 10, the height
10 outlets of the warm air-cooled evaporator of level are connected with the refrigerant inlet of the high-temperature level compressor of the high-temperature level refrigeration unit 2.
The outlet of the second high-temperature level magnetic valve 4 and the refrigerant of the middle temperature level condenser/evaporator in the middle temperature level refrigeration unit 5
Import is connected, the refrigerant outlet of the middle temperature level condenser/evaporator respectively with the described first middle temperature level magnetic valve 6 and second
The import connection of warm level magnetic valve 7, outlet and the middle air-cooled evaporator 11 of temperature level of the first middle temperature level magnetic valve 6
Import is connected, outlet and the middle temperature level compressor of the middle temperature level refrigeration unit 5 of the middle air-cooled evaporator 11 of temperature level
Refrigerant inlet is connected.The outlet of the second middle temperature level magnetic valve 7 exchanges heat with the low-temperature level in the low-temperature level refrigeration unit 8
The import connection of device, the refrigerant outlet of the low-temperature level heat exchanger passes through the low-temperature level magnetic valve 9 and the low-temperature level wind
The import connection of cold type evaporator 12, outlet and the low-temperature level refrigeration unit 8 of the air-cooled evaporator 12 of low-temperature level
The refrigerant inlet connection of low-temperature level compressor.When storehouse temperature is higher than -30 DEG C, only high-temperature level system operation, described second is high
Warm level magnetic valve, the first middle temperature level magnetic valve, the second middle temperature level magnetic valve and low-temperature level closed electromagnetic valve, first high-temperature level
Magnetic valve is opened；When temperature is down to -30 DEG C, the second high-temperature level magnetic valve, the first middle temperature level magnetic valve are opened, and described the
One high-temperature level magnetic valve, the second middle temperature level magnetic valve and low-temperature level closed electromagnetic valve；When temperature is down to -75 DEG C, described second
High-temperature level magnetic valve, the second middle temperature level magnetic valve and low-temperature level magnetic valve are opened, the first high-temperature level magnetic valve, the first middle temperature
Level closed electromagnetic valve.
When three-level refrigeration system is run, high-temperature level refrigeration system operation first, now the first high-temperature level magnetic valve 3 open,
Second high-temperature level magnetic valve 4 is closed, and it is air-cooled that high-temperature level refrigeration agent enters high-temperature level in the place pipeline of the first high-temperature level magnetic valve 3
Evaporator 10, the high-temperature level refrigeration agent after evaporation is returned in high-temperature level refrigeration unit 2 and circulated, when temperature of ice house is down to -30 DEG C,
First high-temperature level magnetic valve 3, the second middle temperature level magnetic valve 7 and low-pressure stage magnetic valve 9 are closed, the second hiigh pressure stage magnetic valve 4, first
Middle temperature level magnetic valve 6 is opened, middle temperature level system operation, and high-temperature level refrigeration agent is freezed in middle temperature level condenser/evaporator with middle temperature level
Agent exchanges heat, and cools down middle temperature level refrigerant, and middle temperature level refrigerant enters middle temperature level wind along the first middle place pipeline of temperature level magnetic valve 6
Cold type evaporator 11, the middle temperature level refrigerant after evaporation is returned in middle temperature level refrigeration unit 5 and circulated, when temperature of ice house is down to -75
DEG C when, the first middle temperature level magnetic valve 6 is closed, and the second middle temperature level magnetic valve 7 and low-temperature level magnetic valve 9 is opened, and now carries out low temperature
Circulation, low-temperature refrigerant after heat exchange enters low-temperature air-cooling formula evaporator 12, continues to cool to freezer until reaching required
Temperature.
In the freezer of the present invention, the cooling of refrigeration system staged, in freezer, more than -30 DEG C are only run high-temperature level refrigeration system
System, operation high-temperature level refrigeration system and middle temperature level refrigeration system when more than -75 DEG C, less than -30 DEG C, less than -75 DEG C just three-levels
Refrigeration system is switched on, and can save operating cost, reduces energy consumption.Meanwhile, solve traditional three-level refrigeration system and start simultaneously at
Pressure of inspiration(Pi) is too high during operation, and operation mid-term condensing pressure is too low, and the problem of system operation is unstable, system operation is more stable.
Described above is only the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (1)
- The ultra low temperature cool house 1. a kind of three-level staged cools, it is characterised in that including grim strategy and three-level refrigeration system, The three-level refrigeration system includes high-temperature level refrigeration system, middle temperature level refrigeration system and low-temperature level refrigeration system；The high-temperature level Refrigeration system includes high-temperature level refrigeration unit, the first high-temperature level magnetic valve, the second high-temperature level magnetic valve and the air-cooled steaming of high-temperature level Send out device, the middle temperature level refrigeration system include middle temperature level refrigeration unit, the first middle temperature level magnetic valve, the second middle temperature level magnetic valve and The middle air-cooled evaporator of temperature level, the low-temperature level refrigeration system includes low-temperature level refrigeration unit, low-temperature level magnetic valve and low-temperature level Air-cooled evaporator；The air-cooled evaporator of high-temperature level, the middle air-cooled evaporator of temperature level and the air-cooled evaporator of low-temperature level are equal It is placed in the freezer enclosed structure；The refrigerant outlet of the high-temperature level refrigeration unit high temperature condenser/evaporator respectively with institute State the import connection of the first high-temperature level magnetic valve and the second high-temperature level magnetic valve, the outlet of the first high-temperature level magnetic valve and institute State the import connection of the air-cooled evaporator of high-temperature level, outlet and the high-temperature level refrigeration machine of the air-cooled evaporator of high-temperature level The refrigerant inlet connection of the high-temperature level compressor of group；The outlet of the second high-temperature level magnetic valve and the middle temperature level refrigeration machine The refrigerant inlet connection of middle temperature level condenser/evaporator in group, the refrigerant outlet of the middle temperature level condenser/evaporator respectively with The first middle temperature level magnetic valve and the second middle temperature level magnetic valve import connection, the outlet of the first middle temperature level magnetic valve with The import connection of the middle air-cooled evaporator of temperature level, the outlet of the middle air-cooled evaporator of temperature level is freezed with the middle temperature level The refrigerant inlet connection of the middle temperature level compressor of unit；Freeze with the low-temperature level outlet of the second middle temperature level magnetic valve The import connection of low-temperature level heat exchanger in unit, the refrigerant outlet of the low-temperature level heat exchanger passes through the low-temperature level electromagnetism Valve is connected with the import of the air-cooled evaporator of the low-temperature level, outlet and the low-temperature level of the air-cooled evaporator of low-temperature level The refrigerant inlet connection of the low-temperature level compressor of refrigeration unit；When storehouse temperature is higher than -30 DEG C, the second high-temperature level electromagnetism Valve, the first middle temperature level magnetic valve, the second middle temperature level magnetic valve and low-temperature level closed electromagnetic valve, the first high-temperature level magnetic valve are opened Open；When temperature is down to -30 DEG C, the second high-temperature level magnetic valve, the first middle temperature level magnetic valve are opened, first high-temperature level Magnetic valve, the second middle temperature level magnetic valve and low-temperature level closed electromagnetic valve；When temperature is down to -75 DEG C, the second high-temperature level electricity Magnet valve, the second middle temperature level magnetic valve and low-temperature level magnetic valve are opened, the first high-temperature level magnetic valve, the first middle temperature level magnetic valve Close；When three-level refrigeration system is run, high-temperature level refrigeration system operation first, now the first high-temperature level magnetic valve open, second High-temperature level closed electromagnetic valve, high-temperature level refrigeration agent pipeline where the first high-temperature level magnetic valve enters the air-cooled evaporation of high-temperature level Device, the high-temperature level refrigeration agent after evaporation is returned in high-temperature level refrigeration unit and circulated, and when temperature of ice house is down to -30 DEG C, first is high Warm level magnetic valve, the second middle temperature level magnetic valve and low-pressure stage closed electromagnetic valve, the second hiigh pressure stage magnetic valve, the first middle temperature level electromagnetism Valve open, middle temperature level system operation, high-temperature level refrigeration agent in middle temperature level condenser/evaporator with middle temperature level refrigerant heat exchanger, cooling Middle temperature level refrigerant, pipeline where middle temperature level refrigerant along the first middle temperature level magnetic valve enters the middle air-cooled evaporator of temperature level, Middle temperature level refrigerant after evaporation is returned in middle temperature level refrigeration unit and circulated, when temperature of ice house is down to -75 DEG C, the first middle temperature level Closed electromagnetic valve, the second middle temperature level magnetic valve and low-temperature level magnetic valve is opened, and now carries out low-temperature circulating, the low temperature system after heat exchange Cryogen enters low-temperature air-cooling formula evaporator, continues to cool to freezer until reaching required temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510228103.8A CN104807276B (en) | 2015-05-07 | 2015-05-07 | Three-level staged cooling ultra low temperature cool house |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510228103.8A CN104807276B (en) | 2015-05-07 | 2015-05-07 | Three-level staged cooling ultra low temperature cool house |
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| CN104807276A CN104807276A (en) | 2015-07-29 |
| CN104807276B true CN104807276B (en) | 2017-08-04 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107192202A (en) * | 2017-05-24 | 2017-09-22 | 广东省现代农业装备研究所 | A kind of pair of medium fruits and vegetables fast precooling device and control method |
| CN109959178A (en) * | 2019-03-27 | 2019-07-02 | 中国北方车辆研究所 | Simulated environment cabin pole cryogenic refrigerating unit |
| CN112146329B (en) * | 2020-09-04 | 2022-06-07 | 海信容声(广东)冷柜有限公司 | Refrigeration equipment and control method thereof |
| CN114151987B (en) * | 2021-11-12 | 2023-05-12 | 青岛澳柯玛生物医疗有限公司 | Parallel control method for compressor units |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3481545B2 (en) * | 2000-03-28 | 2003-12-22 | エスペック株式会社 | Binary refrigerator and method for adjusting its refrigeration capacity |
| CN101832691B (en) * | 2010-04-12 | 2012-08-22 | 大连三洋压缩机有限公司 | Air-cooled immersion type refrigerating plant and control method of refrigerating plant |
| KR101203580B1 (en) * | 2010-11-08 | 2012-11-23 | 엘지전자 주식회사 | Heat pump type air conditioner |
| CN202973641U (en) * | 2012-11-16 | 2013-06-05 | 郑州长城科工贸有限公司 | -80 DEG C series-parallel automatic switchable cascade refrigeration system |
| CN103486754B (en) * | 2013-08-26 | 2015-12-23 | 安徽亿瑞深冷能源科技有限公司 | A kind of energy-conservation middle temperature cold-producing medium/middle temperature cold-producing medium cascade refrigeration system |
| CN203657260U (en) * | 2013-11-20 | 2014-06-18 | 郑州长城科工贸有限公司 | Minus 120 DEG C refrigeration circulating device |
| CN204612305U (en) * | 2015-05-07 | 2015-09-02 | 天津商业大学 | Three grades of staged cooling ultra low temperature cool houses |
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Effective date of registration: 20180426 Address after: 010060, 208, room 2, building 8, Nai Lun apartment, art gallery, new town, Hohhot, the Inner Mongolia Autonomous Region. Patentee after: Inner Mongolia Fuyuan refrigeration equipment Co., Ltd. Address before: 300134 the east side of Jinba highway in Beichen District, Tianjin Patentee before: Tianjin University Of Commerce |
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