CN201476434U - Liquid nitrogen refrigerating apparatus - Google Patents
Liquid nitrogen refrigerating apparatus Download PDFInfo
- Publication number
- CN201476434U CN201476434U CN2009203079289U CN200920307928U CN201476434U CN 201476434 U CN201476434 U CN 201476434U CN 2009203079289 U CN2009203079289 U CN 2009203079289U CN 200920307928 U CN200920307928 U CN 200920307928U CN 201476434 U CN201476434 U CN 201476434U
- Authority
- CN
- China
- Prior art keywords
- liquid nitrogen
- vacuum generator
- refrigerating apparatus
- compressed air
- refrigerating
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a liquid nitrogen refrigerating apparatus, which comprises a liquid nitrogen tank (1). The liquid nitrogen refrigerating apparatus has the following characteristics: the liquid nitrogen tank (1) is connected with a regulating valve (2), the regulating valve (2) is connected with a vacuum generator (3) through a tube, the vacuum generator (3) is also connected with an air tube (4), and the output tube of the vacuum generator (3) is connected with a refrigerating chamber (5). The operating principle of the liquid nitrogen refrigerating apparatus is as follows: when the dry compressed air passes, negative pressure is formed in the vacuum generator, the liquid nitrogen in the liquid nitrogen tank passes through the regulating valve to enter the vacuum generator under the effect of the negative pressure, the liquid nitrogen in the vacuum generator is gasified and blended with the expanded compressed air to reduce the temperature of the expanded compressed air, the cold blended gas is inputted into the refrigerating chamber, and by regulating the blending proportion between the nitrogen and the air, the temperature of the blended gas and the speed of refrigeration can be conveniently controlled. Consequently, the utility model has the advantages of simple structure, convenient control, stable refrigerating speed and the like.
Description
Technical field
The utility model relates to a kind of liquid nitrogen refrigerating apparatus, belongs to refrigeration technology field.
Background technology
In the prior art, adopt liquid nitrogen to carrying out fast-refrigerating in the cool room usually, liquid nitrogen is directly sent into cool room, the speed of refrigeration is wayward, causes the variations in temperature of cool room too fast, and refrigeration is not ideal enough.
Summary of the invention
The purpose of this utility model is: a kind of liquid nitrogen refrigerating apparatus is provided.Simple in structure, refrigerating speed controls easily, stable and refrigerating speed is fast, be mixed compressed air input cool room that cool room is lowered the temperature fast by this device.
The technical solution of the utility model.Liquid nitrogen refrigerating apparatus, it comprises the liquid nitrogen filling, and liquid nitrogen is irritated and is connected control valve, and control valve is by connecting vacuum generator, and vacuum generator also is connected with air duct, and the output channel of vacuum generator is connected to cool room.
Above-mentioned liquid nitrogen refrigerating apparatus, liquid nitrogen are irritated and are connected control valve, and control valve connects the copper hosepipe in the cool room, and the copper hosepipe connects vacuum generator, and vacuum generator also is connected with air duct.
The utility model operation principle is: when the compressed air of drying passes through, in vacuum generator, form negative pressure, liquid nitrogen in the liquid nitrogen container enters vacuum generator by control valve under the effect of negative pressure, liquid nitrogen gasification and mixed in vacuum generator with the compressed air after expanding, the compressed air cooling after expanding, reduce the mist input cool room of temperature, can control the temperature of mist and the speed of refrigeration very easily by regulating nitrogen and Air mixing ratio.Owing to adopted vacuum generator, novel structure of the present utility model, suction height have enlarged the scope of using, and effective.Therefore compare with prior art, the utlity model has advantages such as simple in structure, that control is convenient, refrigerating speed is stable.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is second kind of structural representation of the present utility model.
The specific embodiment
Embodiment 1 of the present utility model.Liquid nitrogen refrigerating apparatus is irritated 1 with liquid nitrogen and is connected control valve 2, and control valve 2 connects vacuum generator 3 by pipeline, and vacuum generator 3 also is connected with air duct 4, feeds compressed air, and the output channel of vacuum generator 3 is connected to cool room 5.After liquid nitrogen and compressed air mix by vacuum generator 3, obtain the mist of low temperature, send into cool room 5 again.The utility model can be controlled the temperature of mist easily, avoids cool room to lower the temperature low or the cooling instability.Regulating the ratio of mist, is t as the temperature of liquid nitrogen
1, compressed-air actuated temperature is t
2, the mixed proportion of the two is m: n, the temperature of the mist of input cool room 5 is: (m*t
1+ n*t
2)/(m+n).
Embodiment 2 of the present utility model.Liquid nitrogen refrigerating apparatus is irritated 1 with liquid nitrogen and is connected control valve 2, and control valve 2 connects the copper hosepipe 6 of cool room 5, and copper hosepipe 6 connects vacuum generator 3 again, and vacuum generator 3 also is connected with air duct 4, and the delivery air of vacuum generator 3 enters atmosphere.
Operation principle is: when the compressed air of drying passes through, form negative pressure in vacuum generator 3, the liquid nitrogen in the liquid nitrogen container 1 enters the copper hosepipe 6 of cool room 5 by control valve 2 under the effect of negative pressure.Liquid nitrogen can be reduced to environment temperature below-100 ℃ by the environment temperature in the copper hosepipe absorption refrigeration chambers 56 that turn cold.
In 3 devices take place in vacuum liquid nitrogen gasification and and expand after compressed air to go back to the back mixed, enter atmosphere.
The cooling rate of cool room 5 environment temperatures is relevant with the surface area of inhaling amount of liquid nitrogen and copper hosepipe 6.
The principle of two kinds of refrigerating plants of the present utility model has similarity, but function is different, and the former mixes the back by liquid nitrogen and air directly to freeze by cold medium.The latter utilizes the low temperature of liquid nitrogen by hosepipe surface absorption refrigeration, does not contact with compressed air with liquid nitrogen in the cool room, can be fit to the use of different occasions.
Because the medium that adopts is a compressed air, the content of nitrogen is big in the air, and nitrogen source returns air again in air, can atmosphere pollution, and be a kind of refrigerating plant of health.
Claims (2)
1. liquid nitrogen refrigerating apparatus, it comprises liquid nitrogen filling (1), it is characterized in that: liquid nitrogen is irritated (1) and is connected control valve (2), control valve (2) is by connecting vacuum generator (3), vacuum generator (3) also is connected with air duct (4), and the output channel of vacuum generator (3) is connected to cool room (5).
2. liquid nitrogen refrigerating apparatus according to claim 1, it is characterized in that: liquid nitrogen is irritated (1) and is connected control valve (2), control valve (2) connects the copper hosepipe (6) in the cool room (5), copper hosepipe (6) connects vacuum generator (3), and vacuum generator (3) also is connected with air duct (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203079289U CN201476434U (en) | 2009-08-13 | 2009-08-13 | Liquid nitrogen refrigerating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203079289U CN201476434U (en) | 2009-08-13 | 2009-08-13 | Liquid nitrogen refrigerating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201476434U true CN201476434U (en) | 2010-05-19 |
Family
ID=42412683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203079289U Expired - Fee Related CN201476434U (en) | 2009-08-13 | 2009-08-13 | Liquid nitrogen refrigerating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201476434U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104886234A (en) * | 2015-06-30 | 2015-09-09 | 温州科技职业学院 | Liquid nitrogen precooling device for fruits and vegetables |
| CN106053517A (en) * | 2016-08-17 | 2016-10-26 | 甘肃省农业科学院林果花卉研究所 | Field frost simulation control test box |
| CN107345729A (en) * | 2017-07-21 | 2017-11-14 | 中国科学院理化技术研究所 | A kind of cryogenic treatment apparatus |
| WO2018086091A1 (en) * | 2016-11-14 | 2018-05-17 | 钟玲珑 | Vacuum energy-saving air supply system |
| CN108445932A (en) * | 2018-03-06 | 2018-08-24 | 河海大学常州校区 | A kind of temperature becomes the temperature control system of RTA reliability test assembly |
| CN108867714A (en) * | 2018-07-20 | 2018-11-23 | 东北大学 | The pile foundation of a kind of anti-lifting by frost and thaw collapse is from refrigerating plant and its application method |
| CN109323496A (en) * | 2018-09-10 | 2019-02-12 | 成都深冷液化设备股份有限公司 | Using liquid nitrogen or liquid air as the charging cable gas circulating cooling method of cold source |
-
2009
- 2009-08-13 CN CN2009203079289U patent/CN201476434U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104886234A (en) * | 2015-06-30 | 2015-09-09 | 温州科技职业学院 | Liquid nitrogen precooling device for fruits and vegetables |
| CN104886234B (en) * | 2015-06-30 | 2018-03-27 | 温州科技职业学院 | A kind of fruits and vegetables Liquid nitrogen precooler device |
| CN106053517A (en) * | 2016-08-17 | 2016-10-26 | 甘肃省农业科学院林果花卉研究所 | Field frost simulation control test box |
| CN106053517B (en) * | 2016-08-17 | 2019-11-12 | 甘肃省农业科学院林果花卉研究所 | A kind of field frost simulation Control experiment case |
| WO2018086091A1 (en) * | 2016-11-14 | 2018-05-17 | 钟玲珑 | Vacuum energy-saving air supply system |
| CN107345729A (en) * | 2017-07-21 | 2017-11-14 | 中国科学院理化技术研究所 | A kind of cryogenic treatment apparatus |
| CN108445932A (en) * | 2018-03-06 | 2018-08-24 | 河海大学常州校区 | A kind of temperature becomes the temperature control system of RTA reliability test assembly |
| CN108445932B (en) * | 2018-03-06 | 2020-07-07 | 河海大学常州校区 | Temperature control system of temperature variation reliability testing device |
| CN108867714A (en) * | 2018-07-20 | 2018-11-23 | 东北大学 | The pile foundation of a kind of anti-lifting by frost and thaw collapse is from refrigerating plant and its application method |
| CN109323496A (en) * | 2018-09-10 | 2019-02-12 | 成都深冷液化设备股份有限公司 | Using liquid nitrogen or liquid air as the charging cable gas circulating cooling method of cold source |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20130813 |