CN106225286A - A kind of overlapping refrigerating cycle system - Google Patents
A kind of overlapping refrigerating cycle system Download PDFInfo
- Publication number
- CN106225286A CN106225286A CN201610870822.4A CN201610870822A CN106225286A CN 106225286 A CN106225286 A CN 106225286A CN 201610870822 A CN201610870822 A CN 201610870822A CN 106225286 A CN106225286 A CN 106225286A
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- China
- Prior art keywords
- temperature level
- input port
- low
- delivery outlet
- refrigeration system
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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
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
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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
-
- 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
- F25B41/37—Capillary tubes
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a kind of overlapping refrigerating cycle system, including high-temperature level refrigeration system and low-temperature level refrigeration system, it is provided with evaporative condenser between described high-temperature level refrigeration system and described low-temperature level refrigeration system, described evaporative condenser is provided with the cooling medium input port A being connected with described high-temperature level refrigeration system and cooling medium delivery outlet A, and the cooled medium input port A that is connected with described low-temperature level refrigeration system and cooled medium delivery outlet A；Described low-temperature level refrigeration system includes low-temperature level compressor, is provided with the hydrojet fall enthalpy heat-exchanger rig for cooling down cold-producing medium between the delivery outlet and described cooled medium input port A of described low-temperature level compressor.The present invention, it can be avoided that pressure at expulsion overpressure protection occur and shut down, can reduce fault and realize continuously running.Both reduced the frequency of pressure at expulsion overpressure protection, and can guarantee that again and reach cryogenic refrigeration requirement.
Description
Technical field
The present invention relates to a kind of cooling cycle system, particularly to a kind of overlapping refrigerating cycle system.
Background technology
Refrigeration system generally comprises the capital equipments such as compressor bank, condenser, reservoir, expansion valve, vaporizer, forms one
Individual cooling cycle system, can produce relatively low temperature, the quick-freezer of such as Ku Wen-35 DEG C.
In order to produce lower temperature, such as-70 DEG C ,-80 DEG C, it is used for storing frost according to the requirement of industry standard red carefully
Born of the same parents, then need to take overlapping refrigerating cycle system.This system is typically made up of high-temperature level and low-temperature level two parts, wherein high temperature
Level includes the capital equipments such as compressor, condenser, reservoir, expansion valve, evaporative condenser；Low-temperature level includes compressor, evaporation
The capital equipments such as condenser, expansion valve, vaporizer.High-temperature level uses high-temperature level refrigeration agent, and low-temperature level uses low-temperature level cold-producing medium.
The feature of low-temperature level cold-producing medium is that the evaporating temperature under an atmospheric pressure is relatively low.In the shutdown not carrying out refrigerating operaton
Under state, cold-producing medium is filled in the whole low-temperature level systems such as compressor bank, condenser, vaporizer and process pipe thereof in a gaseous form
In system, pressure is the highest, and the pressure balance of each several part is consistent.So in the stage starting refrigerating operaton, owing to compressor is inhaled
The pressure of gas end is higher, and the pressure causing exhaust end is higher, often occurs that pressure at expulsion overpressure protection is shut down, it is impossible to transport continuously
Turn.If low-temperature level refrigerant charge in minimizing system, although the frequency of pressure at expulsion overpressure protection can be reduced, but fill
Note less low-temperature level cold-producing medium and can not reach again the refrigerating capacity of expected design.
Summary of the invention
The present invention solves that technical problem present in known technology provides a kind of overlapping refrigerating cycle system.
The present invention solves that technical problem is adopted the technical scheme that present in known technology: a kind of cascade refrigeration
Blood circulation, including high-temperature level refrigeration system and low-temperature level refrigeration system, described high-temperature level refrigeration system and described low-temperature level system
Being provided with evaporative condenser between cooling system, described evaporative condenser is provided with the cooling medium being connected with described high-temperature level refrigeration system
Input port A and cooling medium delivery outlet A, and the cooled medium input port A that is connected with described low-temperature level refrigeration system and quilt
Cooling medium delivery outlet A；Described low-temperature level refrigeration system includes low-temperature level compressor, at the delivery outlet of described low-temperature level compressor
And between described cooled medium input port A, it is provided with the hydrojet fall enthalpy heat-exchanger rig for cooling down cold-producing medium.
The present invention can also adopt the following technical scheme that
Described hydrojet fall enthalpy heat-exchanger rig includes the condensing tube that cylindrical shell and cooled medium flow through, described condensing tube
Be positioned at described housing, between described housing two ends and described condensing tube outer wall close, on described housing with described condensing tube
Vertical direction is provided with cooling medium input port B and cooling medium delivery outlet B；Described condensing tube two ends are provided with port, are respectively
Cooled medium input port B and cooled medium delivery outlet B, described cooled medium input port B and described low-temperature level compressor
Delivery outlet is connected, and described cooled medium delivery outlet B is connected with described cooled medium input port A.
Described low-temperature level refrigeration system also includes low-temperature level expansion valve and vaporizer；Described cooled medium delivery outlet A divides
Becoming two-way, wherein a road is connected with described cooling medium input port B, additionally leads up to described low-temperature level expansion valve and described steaming
The input port sending out device is connected；The delivery outlet of described vaporizer and described cooling medium delivery outlet B all with described low-temperature level compressor
Input port be connected.
Described low-temperature level refrigeration system also includes that capillary tube A, described cooled medium delivery outlet A are by described capillary tube A
It is connected with described cooling medium input port B.
Described low-temperature level refrigeration system also includes that expansion drum, described cooled medium delivery outlet B are divided into two-way, a wherein road
Being connected with described cooled medium input port A, an other road is connected with the input port of described expansion drum；The output of described expansion drum
Mouth is connected with the input port of described low-temperature level compressor.
Described low-temperature level refrigeration system also includes capillary tube B, and the delivery outlet of described expansion drum passes through described capillary tube B and institute
The input port stating low-temperature level compressor is connected.
Described low-temperature level refrigeration system also includes electromagnetic valve, described cooled medium delivery outlet A by described electromagnetic valve with
Described cooling medium input port B is connected.
Described low-temperature level refrigeration system also includes oil eliminator；The delivery outlet of described low-temperature level compressor is divided by described oil
It is connected with described cooled medium input port B from device.
Described cooled medium input port A is provided with pressure transducer.
Described high-temperature level refrigeration system includes that the high-temperature level compressor, condenser, reservoir and the high-temperature level that are sequentially connected are swollen
Swollen valve, described high-temperature level expansion valve is connected with described cooling medium input port A, described cooling medium delivery outlet A and described high temperature
The input port of level compressor is connected.
The present invention has the advantage that with good effect: include that two-stage is freezed, including high-temperature level refrigeration system and low-temperature level
Refrigeration system, is provided with evaporative condenser between high-temperature level refrigeration system and low-temperature level refrigeration system, and evaporative condenser is as height
The vaporizer of temperature level refrigeration system and the condenser of low-temperature level refrigeration system use；Described low-temperature level compressor delivery outlet and
The hydrojet fall enthalpy heat-exchanger rig evaporative condenser for cooling down cold-producing medium it is provided with between the cooled medium input port A of evaporative condenser
Device, can reduce the temperature of low-temperature level cold-producing medium, it is to avoid low-temperature level cold-producing medium exists with overheated gaseous form, thus reduces low temperature
The pressure of level cold-producing medium, it is to avoid occur that pressure at expulsion overpressure protection is shut down, fault can be reduced, it is achieved continuously run.Both reduced
The frequency of pressure at expulsion overpressure protection, can guarantee that again and reaches cryogenic refrigeration requirement.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of the hydrojet fall enthalpy heat-exchanger rig in the present invention.
In figure: 1, low-temperature level compressor；2, electromagnetic valve；3, hydrojet fall enthalpy heat-exchanger rig；4, capillary tube A；5, pressure sensing
Device；6, high-temperature level compressor；7, condenser；8, reservoir；9, evaporative condenser；10, high-temperature level expansion valve；11, capillary tube B；
12, expansion drum；13, low-temperature level expansion valve；14, vaporizer；15, oil eliminator；31, cooling medium input port B；32, cooling is situated between
Matter delivery outlet B；33, cooled medium input port B；34, cooled medium delivery outlet B；91, cooling medium input port A；92, cold
But medium delivery outlet A；93, cooled medium input port A；94, cooled medium delivery outlet A；35, adapter and the solder joint of housing.
Detailed description of the invention
For the summary of the invention of the present invention, feature and effect can be further appreciated that, hereby enumerate following example, and coordinate accompanying drawing
Describe in detail as follows:
Refer to Fig. 1～Fig. 2, a kind of overlapping refrigerating cycle system, freeze including high-temperature level refrigeration system and low-temperature level
System, is provided with evaporative condenser 9, described evaporative condenser between described high-temperature level refrigeration system and described low-temperature level refrigeration system
9 are provided with the cooling medium input port A91 being connected with described high-temperature level refrigeration system and cooling medium delivery outlet A92, and with institute
State cooled medium input port A93 and cooled medium delivery outlet A94 that low-temperature level refrigeration system is connected；Described low-temperature level is freezed
System includes low-temperature level compressor 1, the delivery outlet of described low-temperature level compressor 1 and described cooled medium input port A93 it
Between be provided with for cooling down cold-producing medium hydrojet fall enthalpy heat-exchanger rig 3.
Described hydrojet fall enthalpy heat-exchanger rig 3 can include the condensing tube that cylindrical shell and cooled medium flow through, described cold
Solidifying pipe is positioned at described housing, closes, cold with described on described housing between described housing two ends and described condensing tube outer wall
The vertical direction of solidifying pipe is provided with cooling medium input port B31 and cooling medium delivery outlet B32；Described condensing tube two ends are provided with end
Mouthful, it is respectively cooled medium input port B33 and cooled medium delivery outlet B34, described cooled medium input port B33 and institute
State low-temperature level compressor 1 delivery outlet to be connected, described cooled medium delivery outlet B34 and described cooled medium input port A93 phase
Even.
Described low-temperature level refrigeration system may also include low-temperature level expansion valve 13 and vaporizer 14；Described cooled medium exports
Mouth A94 is divided into two-way, and wherein a road can be connected with described cooling medium input port B31, and described low temperature can be passed through in an other road
Level expansion valve 13 is connected with the input port of described vaporizer 14；The delivery outlet of described vaporizer 14 and described cooling medium delivery outlet
B32 all input ports with described low-temperature level compressor 1 are connected.Described low-temperature level refrigeration system may also include capillary tube A4, described
Cooled medium delivery outlet A94 can be connected with described cooling medium input port B31 by described capillary tube A4.
Described low-temperature level refrigeration system may also include expansion drum 12, and described cooled medium delivery outlet B34 can be divided into two-way,
Wherein a road can be connected with described cooled medium input port A93, and an other road can be connected with the input port of described expansion drum 12；
The delivery outlet of described expansion drum 12 is connected with the input port of described low-temperature level compressor 1.Described low-temperature level refrigeration system also can be wrapped
Including capillary tube B11, the delivery outlet of described expansion drum 12 can be by the input of described capillary tube B11 Yu described low-temperature level compressor 1
Mouth is connected.
Described low-temperature level refrigeration system may also include electromagnetic valve 2, and described cooled medium delivery outlet A94 can pass through described electricity
Magnet valve 2 is connected with described cooling medium input port B31.
Described low-temperature level refrigeration system may also include oil eliminator 15；The delivery outlet of described low-temperature level compressor 1 can pass through
Described oil eliminator 15 is connected with described cooled medium input port B33.
Described cooled medium input port A93 can be provided with pressure transducer 5, can be controlled by the detection of pressure transducer
The operating of system processed, such as can set when the pressure of pressure transducer 5 perception reaches preset value, feed flow branch line electromagnetic valve 2
Open.
Described high-temperature level refrigeration system can include high-temperature level compressor 6, condenser 7, reservoir 8 and the high temperature being sequentially connected
Level expansion valve 10, described high-temperature level expansion valve 10 is connected with described cooling medium input port A91, described cooling medium delivery outlet
A92 is connected with the input port of described high-temperature level compressor 6.
Compressor air-discharging pipeline, can use the fluid copper pipe (GB product) of D16--D32.
Hydrojet capillary tube A, can use the fluid copper pipe (GB product) of D2--D3, can wound into spring shape with reduce
The length taken up room.
The housing of hydrojet fall enthalpy heat-exchanger rig, can use seamless steel pipe or the fluid copper pipe (GB product) of D76--D159.
Adapter requires full weld with the solder joint 35 of housing.
The cooling medium output channel of hydrojet fall enthalpy heat-exchanger rig, uses the fluid copper pipe (GB product) of D10--D20.
Close between cylindrical shell two ends and the described condensing tube outer wall of hydrojet fall enthalpy heat-exchanger rig, use hemispherical envelope
Head is closed, and the steel plate thickness of use drops enthalpy device case wall thickness, a class of the thickness that is above standard more than hydrojet.Two end sockets
(requiring full weld) is welded with using between discharge duct outer wall respectively after central aperture；Two end sockets drop enthalpy device shell with hydrojet
Welding (requiring full weld) is used between body.
The operation principle of the present invention:
Low-temperature level refrigerant vapour, after low-temperature level compressor 1 compresses, enters oil eliminator 15 through exhaustor, from oil
Separator 15 low-temperature level cold-producing medium out, initially entered hydrojet fall enthalpy heat-exchanger rig 3 before entering evaporative condenser 9 and is dropped
Enthalpy reduces pressure, and then enters back into evaporative condenser 9 and is condensed into liquid.
The operation principle of hydrojet fall enthalpy heat-exchanger rig 3 is: low-temperature level cold-producing medium is condensed into liquid in evaporative condenser 9
After, before feeding the expansion valve of devaporation device 14, draw a road feed flow branch line, install electromagnetic valve 2, capillary tube, and
Low-temperature level compressor 1 gas exhaust piping arranges pressure transducer 5.At refrigeration system initial operation stage, when pressure transducer 5 is felt
The pressure known reaches preset value, and feed flow branch line electromagnetic valve 2 is opened, and low-temperature level refrigerant liquid expands through capillary tube A4 and subtracts
Pressure, hydrojet evaporation in the space between the shell of hydrojet fall enthalpy heat-exchanger rig 3, flow through the pipe of hydrojet fall enthalpy heat-exchanger rig 3
Enthalpy decompression is dropped in the low-temperature level refrigerant vapour of inner high voltage high temperature, thus avoids low-temperature level compressor 1 protectiveness to shut down phenomenon, reaches
Expection purpose to the continuous safe operation of refrigeration system.Wherein feed flow branch line low temperature after capillary tube A4 expansion decompression
Level cold-producing medium becomes gaseous state, is sucked by low-temperature level compressor 1 through return-air duct.When the pressure of pressure transducer 5 perception drops to
During less than preset value, feed flow branch line electromagnetic valve 2 cuts out, and hydrojet fall enthalpy heat-exchanger rig 3 then enters off working state.
Low-temperature level cold-producing medium, after through hydrojet fall enthalpy heat-exchanger rig 3 by fall enthalpy decompression, enters back into quilt in evaporative condenser 9
It is condensed into liquid, the most again through low-temperature level expansion valve 13 expansion decompression, enters vaporizer 14 and absorb heat refrigeration, make vaporizer
The space at 14 places lowers the temperature and reaches intended requirement, such as-70 DEG C ,-80 DEG C, and the liquid refrigerant of low-temperature level is at vaporizer 14
In flash to gaseous state, the low-temperature level cold-producing medium in the low-temperature level cold-producing medium of this gaseous state and above-mentioned return-air duct, jointly by low-temperature level
Compressor 1 sucks and carries out next compression process, thus forms the refrigerative circle system of low-temperature level part.
Embodiment described above is merely to illustrate technological thought and the feature of the present invention, in its object is to make this area
Skilled artisan will appreciate that present disclosure and implement according to this, it is impossible to only limit the patent model of the present invention with the present embodiment
Enclosing, what the most all disclosed spirit was made changes on an equal basis or modifies, and still falls in the scope of the claims of the present invention.
Claims (10)
1. an overlapping refrigerating cycle system, it is characterised in that include high-temperature level refrigeration system and low-temperature level refrigeration system, institute
Stating and be provided with evaporative condenser between high-temperature level refrigeration system and described low-temperature level refrigeration system, described evaporative condenser is provided with and institute
State cooling medium input port A and cooling medium delivery outlet A that high-temperature level refrigeration system is connected, and with described low-temperature level refrigeration be
Unite the cooled medium input port A and cooled medium delivery outlet A being connected；Described low-temperature level refrigeration system includes that low-temperature level is compressed
Machine, is provided with for cooling down cold-producing medium between the delivery outlet and described cooled medium input port A of described low-temperature level compressor
Hydrojet fall enthalpy heat-exchanger rig.
Overlapping refrigerating cycle system the most according to claim 1, it is characterised in that described hydrojet fall enthalpy heat-exchanger rig bag
Including cylindrical shell and condensing tube that cooled medium flows through, described condensing tube is positioned at described housing, described housing two ends and
Close between described condensing tube outer wall, described housing is provided with in the direction vertical with described condensing tube cooling medium input port B
With cooling medium delivery outlet B；Described condensing tube two ends are provided with port, are respectively cooled medium input port B and cooled medium
Delivery outlet B, described cooled medium input port B are connected with described low-temperature level compressor delivery outlet, and described cooled medium exports
Mouth B is connected with described cooled medium input port A.
Overlapping refrigerating cycle system the most according to claim 2, it is characterised in that described low-temperature level refrigeration system is also wrapped
Include low-temperature level expansion valve and vaporizer；Described cooled medium delivery outlet A is divided into two-way, and wherein a road is defeated with described cooling medium
Entrance B is connected, and described low-temperature level expansion valve of additionally leading up to is connected with the input port of described vaporizer；Described vaporizer defeated
All input ports with described low-temperature level compressor are connected with described cooling medium delivery outlet B in outlet.
Overlapping refrigerating cycle system the most according to claim 3, it is characterised in that described low-temperature level refrigeration system is also wrapped
Include capillary tube A, described cooled medium delivery outlet A to be connected with described cooling medium input port B by described capillary tube A.
Overlapping refrigerating cycle system the most according to claim 2, it is characterised in that described low-temperature level refrigeration system is also wrapped
Including expansion drum, described cooled medium delivery outlet B is divided into two-way, and wherein a road is connected, separately with described cooled medium input port A
An outer road is connected with the input port of described expansion drum；The input port phase of the delivery outlet of described expansion drum and described low-temperature level compressor
Even.
Overlapping refrigerating cycle system the most according to claim 5, it is characterised in that described low-temperature level refrigeration system is also wrapped
Including capillary tube B, the delivery outlet of described expansion drum is connected by the input port of described capillary tube B with described low-temperature level compressor.
Overlapping refrigerating cycle system the most according to claim 2, it is characterised in that described low-temperature level refrigeration system is also wrapped
Including electromagnetic valve, described cooled medium delivery outlet A is connected with described cooling medium input port B by described electromagnetic valve.
Overlapping refrigerating cycle system the most according to claim 2, it is characterised in that described low-temperature level refrigeration system is also wrapped
Oil scraper separator；The delivery outlet of described low-temperature level compressor is by described oil eliminator and described cooled medium input port B phase
Even.
Overlapping refrigerating cycle system the most according to claim 1, it is characterised in that described cooled medium input port A
It is provided with pressure transducer.
Overlapping refrigerating cycle system the most according to claim 1, it is characterised in that described high-temperature level refrigeration system bag
Including high-temperature level compressor, condenser, reservoir and the high-temperature level expansion valve being sequentially connected, described high-temperature level expansion valve is cold with described
But medium input port A is connected, and described cooling medium delivery outlet A is connected with the input port of described high-temperature level compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610870822.4A CN106225286A (en) | 2016-09-30 | 2016-09-30 | A kind of overlapping refrigerating cycle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610870822.4A CN106225286A (en) | 2016-09-30 | 2016-09-30 | A kind of overlapping refrigerating cycle system |
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| Publication Number | Publication Date |
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| CN106225286A true CN106225286A (en) | 2016-12-14 |
Family
ID=58075771
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610870822.4A Pending CN106225286A (en) | 2016-09-30 | 2016-09-30 | A kind of overlapping refrigerating cycle system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107631507A (en) * | 2017-11-02 | 2018-01-26 | 珠海格力电器股份有限公司 | Air conditioner and refrigeration storage system control method |
| CN110849009A (en) * | 2019-12-11 | 2020-02-28 | 郑州长城科工贸有限公司 | Cascade refrigeration system and method for reducing starting load thereof |
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| JPH04148160A (en) * | 1990-10-12 | 1992-05-21 | Hitachi Ltd | Binary refrigerating cycle |
| CN103499156A (en) * | 2013-09-24 | 2014-01-08 | 广州赛宝仪器设备有限公司 | High-and-low-temperature environmental testing refrigerating system, high-and-low-temperature environmental testing box and control method |
| CN203880989U (en) * | 2014-05-14 | 2014-10-15 | 天津商业大学商业科技实业总公司 | Refrigeration cycle self-adaption device |
| CN206094626U (en) * | 2016-09-30 | 2017-04-12 | 天津市天商冰源科技发展有限公司 | Cascade refrigeration circulation system |
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2016
- 2016-09-30 CN CN201610870822.4A patent/CN106225286A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04148160A (en) * | 1990-10-12 | 1992-05-21 | Hitachi Ltd | Binary refrigerating cycle |
| CN103499156A (en) * | 2013-09-24 | 2014-01-08 | 广州赛宝仪器设备有限公司 | High-and-low-temperature environmental testing refrigerating system, high-and-low-temperature environmental testing box and control method |
| CN203880989U (en) * | 2014-05-14 | 2014-10-15 | 天津商业大学商业科技实业总公司 | Refrigeration cycle self-adaption device |
| CN206094626U (en) * | 2016-09-30 | 2017-04-12 | 天津市天商冰源科技发展有限公司 | Cascade refrigeration circulation system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107631507A (en) * | 2017-11-02 | 2018-01-26 | 珠海格力电器股份有限公司 | Air conditioner and refrigeration storage system control method |
| CN107631507B (en) * | 2017-11-02 | 2023-06-20 | 珠海格力电器股份有限公司 | Air conditioner and control method of refrigeration house system |
| CN110849009A (en) * | 2019-12-11 | 2020-02-28 | 郑州长城科工贸有限公司 | Cascade refrigeration system and method for reducing starting load thereof |
| CN110849009B (en) * | 2019-12-11 | 2023-10-13 | 郑州长城科工贸有限公司 | Cascade refrigeration system and method for reducing starting load thereof |
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Application publication date: 20161214 |