CN2694182Y - Binary cascade refrigerating cycle system of low-temperature refrigerator - Google Patents
Binary cascade refrigerating cycle system of low-temperature refrigerator Download PDFInfo
- Publication number
- CN2694182Y CN2694182Y CN 200420010468 CN200420010468U CN2694182Y CN 2694182 Y CN2694182 Y CN 2694182Y CN 200420010468 CN200420010468 CN 200420010468 CN 200420010468 U CN200420010468 U CN 200420010468U CN 2694182 Y CN2694182 Y CN 2694182Y
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- China
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- low temperature
- low
- condenser
- evaporator
- cycle system
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Abstract
The utility model relates to a binary cascade refrigerating cycle system of low-temperature refrigerator, belonging to the refrigerating technical field, which comprises a high temperature level refrigeration loop which respectively comprises a high temperature level compressor with pipelines in both ends series connection, a molecular screen filter, a condenser, capillaries and a condenser evaporator, and the condenser evaporator is a sealed container. The utility model also comprises a low temperature level refrigeration loop, a circulating pipe from the low temperature level compressor in the loop penetrates through the condenser evaporator and is in series connection with the molecular screen filter, the pipelines behind the molecular screen filter penetrates through the middle heat regenerator and is in series connection with the low temperature capillaries and the low temperature evaporator, the outlet of the low temperature evaporator is connected with the inlet of the middle heat regenerator, and the outlet of the middle heat regenerator is connected with the inlet of the low temperature level compressor. The binary cascade refrigerating cycle system of low-temperature refrigerator can provided a lower storage temperature.
Description
Technical field
The utility model belongs to refrigeration technology field, particularly a kind of binary superposition type low-temp. refrigerator cooling cycle system.
Background technology
In traditional refrigerating method, all adopt a kind of cold-producing medium, when cryogenic temperature requires the difficulty that some are difficult to overcome can to occur when low: (1), no matter any in evaporant, evaporating temperature is low more, evaporating pressure is also just low more.And that low excessively evaporating pressure may cause compressor to be difficult to sometimes is air-breathing, perhaps makes extraneous air enter refrigeration system.(2), excessively when low, some cold-producing medium commonly used has reached setting temperature, can't realize the flow circuit of cold-producing medium in temperature.(3), along with evaporating pressure reduces, the unit mass refrigerant volume increases, refrigerant mass fluxes reduces, refrigerating capacity reduces greatly.For obtaining required refrigerating capacity, must increase air-breathing area, like this then volume compressor is too huge.Therefore, existing refrigeration system is difficult to provide low storage temperature.
The utility model content
The utility model purpose is to provide a kind of binary superposition type low-temp. refrigerator cooling cycle system that low storage temperature is provided.
For reaching above-mentioned purpose, the utility model adopts following technical scheme: binary superposition type low-temp. refrigerator cooling cycle system, comprise the refrigerating circuit of high temperature level, this loop is made up of the high temperature stage compressor, molecular sieve filter, condenser, capillary, the condenser/evaporator that are connected in series from beginning to end by pipeline successively, and condenser/evaporator is a closed container; Also comprise the refrigerating circuit of low temperature level, passing condenser/evaporator from the circulation pipe of low temperature stage compressor in this loop is connected in series with molecular sieve filter, in the middle of passing, pipeline behind the molecular sieve filter is connected in series low temperature capillary and cryogenic vaporizer behind the regenerator, the cryogenic vaporizer outlet is connected with middle regenerator import, and middle regenerator outlet connects the import of low temperature stage compressor.
In the refrigerating circuit of low temperature level, be serially connected with magnetic valve, expander and magnetic valve successively by pipeline between molecular sieve filter export pipeline and the middle regenerator export pipeline.
Middle regenerator is the fin cross exchanger.
The utility model utilization two stages of compression technology adopts different cold-producing mediums in two closed circuits, high temperature level closed circuit adopts R12 or R13a cold-producing medium, and low temperature level closed circuit adopts the R13 cold-producing medium.High temperature level cold-producing medium evaporates through condenser/evaporator, and low temperature level condensing agent is through the condenser/evaporator condensation, and condensed low temperature level cold-producing medium enters the cryogenic vaporizer evaporation again through middle regenerator heat exchange through the low temperature capillary.Because through the condenser/evaporator condensation, temperature is low before entering low-temperature condenser for low-temperature refrigerant, can produce big refrigerating capacity, make storeroom produce lower temperature.Cryogenic system Yin Wendu raises refrigerant pressure is raise when preventing that the low temperature stage compressor from shutting down, and can increase expander in low temperature level closed circuit.For little volume refrigerator, also can be by suitable increasing condenser/evaporator volume to reduce the rising of refrigerant pressure.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
Embodiment, binary superposition type low-temp. refrigerator cooling cycle system, comprise the refrigerating circuit of high temperature level, this loop is made up of the high temperature stage compressor 1 that is connected in series from beginning to end by pipeline successively, molecular sieve filter 2, condenser 3, capillary 4, condenser/evaporator 5, and condenser/evaporator 5 is a closed container; Also comprise the refrigerating circuit of low temperature level, passing condenser/evaporator 5 from the circulation pipe of low temperature stage compressor 6 in this loop is connected in series with molecular sieve filter 7, regenerator 8 back serial connection low temperature capillary 9 and cryogenic vaporizers 10 in the middle of pipeline behind the molecular sieve filter 7 passes, cryogenic vaporizer 10 outlets are connected with middle regenerator 8 imports, and middle regenerator 10 outlets connect 6 imports of low temperature stage compressor.Middle regenerator 8 is the fin cross exchanger.In the refrigerating circuit of low temperature level, be serially connected with magnetic valve 11, expander 12 and magnetic valve 13 successively by pipeline between molecular sieve filter 7 export pipelines and middle regenerator 8 export pipelines.
Claims (3)
1, binary superposition type low-temp. refrigerator cooling cycle system, it is characterized in that, comprise the refrigerating circuit of high temperature level, this loop is made up of the high temperature stage compressor, molecular sieve filter, condenser, capillary, the condenser/evaporator that are connected in series from beginning to end by pipeline successively, and condenser/evaporator is a closed container; Also comprise the refrigerating circuit of low temperature level, passing condenser/evaporator from the circulation pipe of low temperature stage compressor in this loop is connected in series with molecular sieve filter, in the middle of passing, pipeline behind the molecular sieve filter is connected in series low temperature capillary and cryogenic vaporizer behind the regenerator, the cryogenic vaporizer outlet is connected with middle regenerator import, and middle regenerator outlet connects the import of low temperature stage compressor.
2, cooling cycle system as claimed in claim 1 is characterized in that, in the refrigerating circuit of low temperature level, is serially connected with magnetic valve, expander and magnetic valve successively by pipeline between molecular sieve filter export pipeline and the middle regenerator export pipeline.
3, cooling cycle system as claimed in claim 1 or 2 is characterized in that, middle regenerator is the fin cross exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420010468 CN2694182Y (en) | 2004-03-26 | 2004-03-26 | Binary cascade refrigerating cycle system of low-temperature refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420010468 CN2694182Y (en) | 2004-03-26 | 2004-03-26 | Binary cascade refrigerating cycle system of low-temperature refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2694182Y true CN2694182Y (en) | 2005-04-20 |
Family
ID=34768311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420010468 Expired - Lifetime CN2694182Y (en) | 2004-03-26 | 2004-03-26 | Binary cascade refrigerating cycle system of low-temperature refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2694182Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829572A (en) * | 2012-09-06 | 2012-12-19 | 昆山一恒仪器有限公司 | Energy-saving ultralow-temperature preservation box |
| CN103105017A (en) * | 2013-01-15 | 2013-05-15 | 安徽亿瑞深冷能源科技有限公司 | Environment test device refrigerating system and energy-saving working condition fast determination method thereof |
| CN111569344A (en) * | 2020-05-28 | 2020-08-25 | 青岛理工大学 | Circulating drying device, fire hose drying system and method |
-
2004
- 2004-03-26 CN CN 200420010468 patent/CN2694182Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829572A (en) * | 2012-09-06 | 2012-12-19 | 昆山一恒仪器有限公司 | Energy-saving ultralow-temperature preservation box |
| CN102829572B (en) * | 2012-09-06 | 2015-05-27 | 苏州贝茵医疗器械有限公司 | Energy-saving ultralow-temperature preservation box |
| CN103105017A (en) * | 2013-01-15 | 2013-05-15 | 安徽亿瑞深冷能源科技有限公司 | Environment test device refrigerating system and energy-saving working condition fast determination method thereof |
| CN103105017B (en) * | 2013-01-15 | 2016-08-31 | 安徽亿瑞深冷能源科技有限公司 | Environment test device refrigeration system and energy-conservation operating mode fast determination method thereof |
| CN111569344A (en) * | 2020-05-28 | 2020-08-25 | 青岛理工大学 | Circulating drying device, fire hose drying system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140326 Granted publication date: 20050420 |