CN109210817A - Three-level cascade refrigeration system - Google Patents
Three-level cascade refrigeration system Download PDFInfo
- Publication number
- CN109210817A CN109210817A CN201811227682.4A CN201811227682A CN109210817A CN 109210817 A CN109210817 A CN 109210817A CN 201811227682 A CN201811227682 A CN 201811227682A CN 109210817 A CN109210817 A CN 109210817A
- Authority
- CN
- China
- Prior art keywords
- refrigeration system
- refrigeration
- level
- compressor
- order
- Prior art date
- 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.)
- Pending
Links
- 238000005057 refrigeration Methods 0.000 title claims abstract description 145
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003507 refrigerant Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000007788 liquid Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses a kind of three-level cascade refrigeration systems, first order refrigeration system including being sequentially overlapped connection, second level refrigeration system and third level refrigeration system, the first order refrigeration system includes the first compressor being connected to by refrigeration piping, first water condenser and First Heat Exchanger, the second level refrigeration system includes the second compressor being connected to by refrigeration piping, second water condenser and the second heat exchanger, the third level refrigeration system includes the third compressor being connected to by refrigeration piping, third water condenser and refrigerating evaporator, and the first order refrigeration system, second level refrigeration system and third level refrigeration system are sequentially connected by refrigeration piping and form cycle refrigeration system.The present invention passes through the back work of the first order refrigeration system, second level refrigeration system and third level refrigeration system that are sequentially overlapped, reaches fast-refrigerating and reaches extremely low temperature, with advantage at low cost, high-efficient.
Description
Technical field
The present invention relates to mechanical refrigeration systems, and in particular to a kind of three-level cascade refrigeration system.
Background technique
At present in refrigeration equipment under mechanical refrigeration common situation attainable limit low temperature be -80 DEG C, if desired arrive to -
100 DEG C of temperature can generally be carried out by the way of liquid nitrogen refrigerating, but liquid nitrogen, which uses, many unfavorable factors, such as:
At high cost, transport and storage are difficult, danger coefficient is big etc., therefore are badly in need of researching and developing the test that the new Refrigeration Technique of one kind reaches needs
Condition solves above-mentioned difficulties.
Summary of the invention
In view of the above deficiencies, the object of the present invention is to provide a kind of three-level cascade refrigeration systems, by being sequentially overlapped
First order refrigeration system, second level refrigeration system and third level refrigeration system back work, reach fast-refrigerating and reach
Extremely low temperature, with advantage at low cost, high-efficient.
To achieve the above object, the technical solution provided by the present invention is:
A kind of three-level cascade refrigeration system, first order refrigeration system, second level refrigeration system including being sequentially overlapped connection
With third level refrigeration system, the first order refrigeration system includes the first compressor being connected to by refrigeration piping, the first water condensation
Device and First Heat Exchanger, the second level refrigeration system include the second compressor, the second water condenser by refrigeration piping connection
With the second heat exchanger, the third level refrigeration system include by refrigeration piping connection third compressor, third water condenser and
Refrigerating evaporator, and the first order refrigeration system, second level refrigeration system and third level refrigeration system have refrigeration piping successively
Connection composition cycle refrigeration system.
Preferably, first compressor, the second compressor and third compressor use semi-hermetic refrigeration compressor.
Preferably, environmental protection is respectively adopted in the first order refrigeration system, second level refrigeration system and third level refrigeration system
Refrigerant R404a, R23, R14.
Preferably, the first order refrigeration system, second level refrigeration system and third level refrigeration system form the system of superposition
Cold high-temperature level, refrigeration medium temperature grade and refrigeration low-temperature grade, and then formed and refrigeration effect is realized to working space, and working space uses
Forced circulation draft type.
Preferably, the working space uses multiple wing type centrifugal blower fan.
Preferably, the refrigeration system is automatically controlled using automatic control system, and solenoid valve control is equipped in refrigeration system
Flow processed.
The invention has the benefit that
It is mutual that the present invention passes through first order refrigeration system, second level refrigeration system and the third level refrigeration system being sequentially overlapped
Cooperation realizes super low temperature refrigeration to working space from refrigeration high-temperature level, refrigeration medium temperature grade to refrigeration low-temperature grade, and can reach quick
Refrigeration, while it avoids liquid nitrogen refrigerating at high cost, transport and stores problem difficult, that danger coefficient is big.
With reference to the accompanying drawing with embodiment, the present invention is further described.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural block diagram of three-level cascade refrigeration system of the present invention；
Fig. 2 is the structural schematic diagram of three-level cascade refrigeration system of the present invention.
It is each in figure that the reference numerals are as follows.
First order refrigeration system 1, the first compressor 1a, the first water condenser 1b, First Heat Exchanger 1c, second level refrigeration system
It unites the 2, second compressor 2a, the second water condenser 2b, the second heat exchanger 2c, third level refrigeration system 3, third compressor 3a, the
Three water condenser 3b, refrigerating evaporator 3c, refrigeration piping 4, solenoid valve 5.
Specific embodiment
In order to describe the technical content, the structural feature, the achieved object and the effect of this invention in detail, below in conjunction with embodiment
And attached drawing is cooperated to be explained in detail.
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical", "horizontal",
The orientation or positional relationship of the instructions such as "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of retouching
It states the present invention and simplifies description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore be not considered as limiting the invention.
Please refer to Fig. 1 and Fig. 2, a kind of three-level cascade refrigeration system, the first order refrigeration system including being sequentially overlapped connection
1, second level refrigeration system 2 and third level refrigeration system 3.Wherein, the first order refrigeration system 1 includes being connected by refrigeration piping 4
Logical the first compressor 1a, the first water condenser 1b and First Heat Exchanger 1c, and first order refrigeration system 1 cooperates refrigerant to realize
The refrigeration of first stage；The second level refrigeration system 2 includes the second compressor 2a being connected to by refrigeration piping 4, the second water cooling
Condenser 2b and the second heat exchanger 2c, second level refrigeration system 2 cooperate refrigerant further on the basis of first order refrigeration system 1
Refrigeration；The third level refrigeration system 3 includes third compressor 3a, third water condenser 3b and the system being connected to by refrigeration piping 4
Cold evaporator 3c, finally, third level refrigeration system 3 cooperates refrigerant to realize on the basis of second level refrigeration system 2 finally
Extremely low temperature refrigeration, and the first order refrigeration system 1, second level refrigeration system 2 and third level refrigeration system 3 have refrigeration piping
4 are sequentially connected composition cycle refrigeration system.
In the present embodiment, the first compressor 1a, the second compressor 2a and third compressor 3a use semiclosed system
Cold compressor, with small in size, good refrigeration effect and the high advantage of Energy Efficiency Ratio.
In the present embodiment, the first order refrigeration system 1, second level refrigeration system 2 and third level refrigeration system 3 are distinguished
Using environmental protection refrigerant R404a, R23, R14.
Further, the first order refrigeration system 1, second level refrigeration system 2 and third level refrigeration system 3 form superposition
Refrigeration high-temperature level, refrigeration medium temperature grade and refrigeration low-temperature grade, and then formed and refrigeration effect, and working space realized to working space
Using forced circulation draft type.In the present embodiment, the working space uses multiple wing type centrifugal blower fan.
In the present embodiment, the refrigeration system is automatically controlled using automatic control system, and electricity is equipped in refrigeration system
Magnet valve 5 controls flow.
The present invention passes through first order refrigeration system 1, second level refrigeration system 2 and the third level refrigeration system 3 being sequentially overlapped
It cooperates and super low temperature refrigeration is realized to working space from refrigeration high-temperature level, refrigeration medium temperature grade to refrigeration low-temperature grade, and can reach
Fast-refrigerating, while it avoids liquid nitrogen refrigerating at high cost, transport and stores problem difficult, that danger coefficient is big.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is modified.Therefore, the invention is not limited to the specific embodiments disclosed and described above, to of the invention
Some modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, although being used in this specification
Some specific terms, these terms are merely for convenience of description, does not limit the present invention in any way, using with its
The same or similar other devices, all fall in the scope of protection of the present invention.
Claims (6)
1. a kind of three-level cascade refrigeration system, it is characterised in that: including be sequentially overlapped connection first order refrigeration system (1),
Second level refrigeration system (2) and third level refrigeration system (3), the first order refrigeration system (1) include being connected to by refrigeration piping (4)
The first compressor (1a), the first water condenser (1b) and First Heat Exchanger (1c), the second level refrigeration system (2) include by
The second compressor (2a), the second water condenser (2b) and the second heat exchanger (2c) of refrigeration piping (4) connection, the third level system
Cooling system (3) includes third compressor (3a), third water condenser (3b) and the refrigerating evaporator being connected to by refrigeration piping (4)
(3c), and the first order refrigeration system (1), second level refrigeration system (2) and third level refrigeration system (3) have refrigeration piping
(4) it is sequentially connected composition cycle refrigeration system.
2. three-level cascade refrigeration system as described in claim 1, it is characterised in that: first compressor (1a), the second pressure
Contracting machine (2a) and third compressor (3a) use semi-hermetic refrigeration compressor.
3. three-level cascade refrigeration system as described in claim 1, it is characterised in that: the first order refrigeration system (1), second
Environmental protection refrigerant R404a, R23, R14 is respectively adopted in grade refrigeration system (2) and third level refrigeration system (3).
4. three-level cascade refrigeration system as described in claim 1, it is characterised in that: the first order refrigeration system (1), second
Grade refrigeration system (2) and third level refrigeration system (3) form the refrigeration high-temperature level, refrigeration medium temperature grade and refrigeration low-temperature grade of superposition,
And then it is formed and refrigeration effect is realized to working space, and working space uses forced circulation draft type.
5. three-level cascade refrigeration system as claimed in claim 4, it is characterised in that: the working space uses multiple wing type centrifugal
Blower.
6. three-level cascade refrigeration system as described in claim 1, it is characterised in that: the refrigeration system is using automatic control system
System automatically controls, and is equipped with solenoid valve (5) in refrigeration system and controls flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227682.4A CN109210817A (en) | 2018-10-22 | 2018-10-22 | Three-level cascade refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227682.4A CN109210817A (en) | 2018-10-22 | 2018-10-22 | Three-level cascade refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109210817A true CN109210817A (en) | 2019-01-15 |
Family
ID=64981026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811227682.4A Pending CN109210817A (en) | 2018-10-22 | 2018-10-22 | Three-level cascade refrigeration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109210817A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981720A (en) * | 2020-01-21 | 2020-11-24 | 天津冷源工程设计院 | Multi-load system |
| CN113019487A (en) * | 2021-03-02 | 2021-06-25 | 重庆浩生科技有限公司 | Temperature change test system capable of cooling to extremely low temperature at high rate |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004279014A (en) * | 2003-03-19 | 2004-10-07 | Mayekawa Mfg Co Ltd | Co2 refrigerating cycle |
| EP2708833A1 (en) * | 2012-09-14 | 2014-03-19 | Hitachi Appliances, Inc. | Cascade refrigerating 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 |
| CN205641652U (en) * | 2016-04-06 | 2016-10-12 | 广东美的制冷设备有限公司 | Cooling systems |
| CN106403341A (en) * | 2016-09-05 | 2017-02-15 | 珠海格力电器股份有限公司 | Multi-temperature-zone cascade refrigerating system and low-temperature refrigerator |
| CN208859934U (en) * | 2018-10-22 | 2019-05-14 | 重庆优玛泰思特仪器有限公司 | Three-level cascade refrigeration system |
-
2018
- 2018-10-22 CN CN201811227682.4A patent/CN109210817A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004279014A (en) * | 2003-03-19 | 2004-10-07 | Mayekawa Mfg Co Ltd | Co2 refrigerating cycle |
| EP2708833A1 (en) * | 2012-09-14 | 2014-03-19 | Hitachi Appliances, Inc. | Cascade refrigerating 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 |
| CN205641652U (en) * | 2016-04-06 | 2016-10-12 | 广东美的制冷设备有限公司 | Cooling systems |
| CN106403341A (en) * | 2016-09-05 | 2017-02-15 | 珠海格力电器股份有限公司 | Multi-temperature-zone cascade refrigerating system and low-temperature refrigerator |
| CN208859934U (en) * | 2018-10-22 | 2019-05-14 | 重庆优玛泰思特仪器有限公司 | Three-level cascade refrigeration system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981720A (en) * | 2020-01-21 | 2020-11-24 | 天津冷源工程设计院 | Multi-load system |
| CN111981720B (en) * | 2020-01-21 | 2024-02-20 | 天津冷源工程设计院 | Multi-load system |
| CN113019487A (en) * | 2021-03-02 | 2021-06-25 | 重庆浩生科技有限公司 | Temperature change test system capable of cooling to extremely low temperature at high rate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3332180B1 (en) | Perfected portable air conditioner | |
| EP3640549A1 (en) | Air conditioner system and air conditioner having same | |
| CN204313513U (en) | Overlapping both cooling and heating high temperature heat pump | |
| EP3040645A2 (en) | Carbon dioxide based auxiliary cooling system | |
| CN104236164B (en) | Ultra-high temperature cascade water source heat pump system | |
| CN109780742A (en) | The superhigh temperature ultra low temperature overlapping heat pump energy-saving system of 95 DEG C of -99 DEG C of water outlets | |
| CN208859934U (en) | Three-level cascade refrigeration system | |
| CN109210817A (en) | Three-level cascade refrigeration system | |
| CN104266417B (en) | Refrigeration operating method of multi-split air conditioner in high temperature environment | |
| EP3734193A1 (en) | Air conditioner system | |
| CN105758049A (en) | Variable-flow single-working medium cascade heat pump system with parallel heat exchangers | |
| CN207299601U (en) | A kind of automobile using Gas-supplying enthalpy-increasing air-conditioning | |
| CN210772602U (en) | Anti-frosting heat pump air conditioning system | |
| CN104344595B (en) | Air conditioning system | |
| CN204313529U (en) | Overlapping large temperature difference double source high temperature heat pump | |
| CN208269446U (en) | A kind of Auto-cascade cycle dual temperature refrigeration system of adjustable compressor delivery temperature | |
| CN110500686A (en) | A kind of multi-temperature zone multi-generation system | |
| CN213020046U (en) | Novel low-temperature dehumidifier | |
| CN211345913U (en) | Low-pressure exhaust air-cooled wide-ring-temperature CO2 air source heat pump system | |
| CN209840291U (en) | Outdoor unit, heat exchange system and air conditioner | |
| CN103615764B (en) | A kind of energy-saving type air conditioner | |
| CN209197193U (en) | A kind of Bidirectional cascade heat pump circulating system | |
| CN208419258U (en) | A kind of cascade superhigh temperature hot water air source heat pump system | |
| CN206540332U (en) | Many heat exchanger parallel systems that a kind of high efficiency energy is reclaimed | |
| CN205227932U (en) | Short circuit tonifying qi heat pump suitable for low temperature environment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |