CN208859934U - Three-level cascade refrigeration system - Google Patents
Three-level cascade refrigeration system Download PDFInfo
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- CN208859934U CN208859934U CN201821707758.9U CN201821707758U CN208859934U CN 208859934 U CN208859934 U CN 208859934U CN 201821707758 U CN201821707758 U CN 201821707758U CN 208859934 U CN208859934 U CN 208859934U
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Abstract
The utility model 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 utility model 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 utility model 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.
Utility model content
In view of the above deficiencies, the purpose of the utility model is to provide a kind of three-level cascade refrigeration systems, by successively
The back work of the first order refrigeration system, second level refrigeration system and third level refrigeration system of superposition, reaches fast-refrigerating simultaneously
Reach extremely low temperature, with advantage at low cost, high-efficient.
To achieve the above object, technical solution provided by the utility model 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 utility model has the following beneficial effects:
The utility model passes through first order refrigeration system, second level refrigeration system and the third level refrigeration system 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.
With reference to the accompanying drawing with embodiment, the present invention will be further described.
Detailed description of the invention
Attached drawing is to be used to provide a further understanding of the present invention, and constitute part of specification, and following
Specific embodiment be used to explain the utility model together, but do not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural block diagram of the utility model three-level cascade refrigeration system；
Fig. 2 is the structural schematic diagram of the utility model three-level cascade refrigeration system.
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
For technology contents, the construction feature, the objects and the effects that the utility model is described in detail, below in conjunction with implementation
Mode simultaneously cooperates attached drawing to be explained in detail.
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.In the description of the present invention, it should be noted that term " center ", "upper", "lower", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "inner", "outside" is orientation based on the figure or position
Relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present 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 utility model passes through first order refrigeration system 1, second level refrigeration system 2 and the third level refrigeration system being sequentially overlapped
System 3, which cooperates, 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
To 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, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and is modified.Therefore, the utility model is not limited to specific embodiment disclosed and described above, right
Some modifications and changes of the utility model should also be as falling into the protection scope of the claims of the present utility model.In addition, to the greatest extent
It is used some specific terms in pipe this specification, these terms are merely for convenience of description, not to the utility model
Any restrictions are constituted, using same or similar other devices, in scope of protection of the utility model.
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 |
|---|---|---|---|
| CN201821707758.9U CN208859934U (en) | 2018-10-22 | 2018-10-22 | Three-level cascade refrigeration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821707758.9U CN208859934U (en) | 2018-10-22 | 2018-10-22 | Three-level cascade refrigeration system |
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| Publication Number | Publication Date |
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| CN208859934U true CN208859934U (en) | 2019-05-14 |
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| CN201821707758.9U Active CN208859934U (en) | 2018-10-22 | 2018-10-22 | Three-level cascade refrigeration system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210817A (en) * | 2018-10-22 | 2019-01-15 | 重庆优玛泰思特仪器有限公司 | Three-level cascade refrigeration system |
| CN112524830A (en) * | 2020-11-27 | 2021-03-19 | 冰山松洋生物科技(大连)有限公司 | Composite ultralow temperature refrigerating system |
-
2018
- 2018-10-22 CN CN201821707758.9U patent/CN208859934U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210817A (en) * | 2018-10-22 | 2019-01-15 | 重庆优玛泰思特仪器有限公司 | Three-level cascade refrigeration system |
| CN112524830A (en) * | 2020-11-27 | 2021-03-19 | 冰山松洋生物科技(大连)有限公司 | Composite ultralow temperature refrigerating system |
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