CN202989229U - Deep cold box of double-refrigerating system - Google Patents
Deep cold box of double-refrigerating system Download PDFInfo
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- CN202989229U CN202989229U CN2012206869479U CN201220686947U CN202989229U CN 202989229 U CN202989229 U CN 202989229U CN 2012206869479 U CN2012206869479 U CN 2012206869479U CN 201220686947 U CN201220686947 U CN 201220686947U CN 202989229 U CN202989229 U CN 202989229U
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Abstract
The utility model provides a deep cold box of a double-refrigerating system and belongs to deep cold treatment equipment. A box body is rectangular; the box body and the inner part of a box cover are filled with polyurethane foam heat-insulating materials; a sealing felt is located between the box body and the box cover; a centrifugal fan is fixedly connected with the left side of the inner part of the box body; an axial flow fan is fixedly connected with the right side of the inner part of the box body; a liquid nitrogen pipeline is fixedly connected with a flow guide plate; two thermal resistors are located at the two sides of the inner part of the box body; a low-temperature solenoid valve and the liquid nitrogen pipeline are communicated and are placed at the two sides of the outer part of the box body; a right-side variable frequency motor is connected with the axial flow fan through a power transmission shaft and is located at the two sides of the outer part of the box body; a left-side variable frequency motor is connected with the centrifugal fan through the power transmission shaft; and an air vent is formed in the rear side in the box body. The deep cold box disclosed by the utility model has the advantages that the structure is novel; the fans are placed at the two sides of the inner part of the box body so that the air speed of circulating cold air formed by low-temperature nitrogen gas in the box body is continuously adjustable; and therefore, the loading amount is great, the refrigerating capability is strong and the temperature uniformity is good.
Description
Technical field
The utility model belongs to deep cold treatment apparatus, especially the deep cooling box of a kind of pair of refrigeration system.
Background technology
The sub-zero treatment technology refers to be cooled to through the metallic substance after quenching a kind of method of processing below-130 ℃, the method can significantly improve mechanical property and the work-ing life of metallic substance, stablize workpiece size, Reducing distortion is widely used at numerous areas such as mould, cutter, bearing, precision measuringtolls.At present, domestic specific equipment development of researching and developing for the sub-zero treatment technology is very fast, and it has obtained obvious progress at aspects such as temperature-controlled precision, temperature homogeneity, automatization controls.Known deep cold treatment apparatus structure is: equipment is the case structure that thermal insulation layer is housed, and in casing, a side is equipped with the refrigeration system of liquid nitrogen nozzle and fan composition, and temperature sensor also is installed in casing.Its principle of work is: liquid nitrogen forms low temperature nitrogen via the liquid nitrogen nozzle ejection to box house, low temperature nitrogen circulates at box house under the effect of air-circulating fan system, and the low temperature nitrogen that circulates by box house absorbs the purpose that heat reaches even refrigeration.
Along with the development of cryogenics, market is more and more large to the demand of the deep cold treatment apparatus of larger volume.Because the volume of deep cold treatment apparatus is increasing, usually strengthen volume with strengthening refrigeration cabinet length, in the situation that fully loaded, the circulation ability of the single formed low temperature nitrogen of refrigeration system is difficult to satisfy the Technology Need of sub-zero treatment, cause the technical indicators such as temperature homogeneity of equipment to be difficult to reach customer requirement, be unfavorable for that the marketing of sub-zero treatment technical equipment is used.
Summary of the invention
The utility model provides the deep cooling box of a kind of pair of refrigeration system, and when strengthening with the volume that solves deep cold treatment apparatus, the temperature homogeneity of equipment can not meet the requirements of problem.
the technical solution of the utility model is: casing is rectangular, the inner filled polyurethane cellular insulant of casing and case lid, the sealing felt is between casing and case lid, centrifugal fan and box house left side is fixedly connected with, axial fan is fixedly connected with the box house right side, the liquid nitrogen pipeline is fixedly connected with flow deflector, two hot resistances are placed in box house both sides, low-temperature solenoid valve and liquid nitrogen pipeline connection also are placed in the casing both sides external, the right side variable-frequency motor is connected with axial fan by power transmission shaft, and be placed in the casing both sides external, the left side variable-frequency motor is connected with centrifugal fan by power transmission shaft, the box house rear side has venting hole.
The utility model has the advantage of: novel structure, owing to box house both sides placing respectively axial fan and centrifugal fan, low temperature nitrogen forms under its acting in conjunction and circulates the stronger circulation cold air of ability, the propulsion source of axial fan and centrifugal fan is variable-frequency motor, the circulation cold air wind speed that low temperature nitrogen forms in casing is adjustable continuously, makes that loading capacity is larger, refrigeration capacity is stronger, temperature homogeneity is better.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
the workpiece that need are processed is placed in casing, case lid closes, it is inner that liquid nitrogen is ejected into casing via the low-temperature solenoid valve of casing both sides and liquid nitrogen pipeline, low temperature nitrogen after gasification is at the centrifugal fan of box house both sides, circulate at box house under the acting in conjunction of axial fan and flow deflector, utilize the gasification latent heat of liquid nitrogen to make temperature decline in casing, switching time by controlling low-temperature solenoid valve and frequency are controlled the amount of liquid nitrogen that enters casing and are realized controlling cooling rate, control the wind speed of low temperature nitrogen recirculating air by the rotating speed of controlling variable-frequency motor, air quantity, realize the temperature homogeneity index that box house is desirable.
Claims (1)
1. the deep cooling box of two refrigeration systems, it is characterized in that: casing is rectangular, the inner filled polyurethane cellular insulant of casing and case lid, the sealing felt is between casing and case lid, centrifugal fan and box house left side is fixedly connected with, axial fan is fixedly connected with the box house right side, the liquid nitrogen pipeline is fixedly connected with flow deflector, two hot resistances are placed in box house both sides, low-temperature solenoid valve and liquid nitrogen pipeline connection also are placed in the casing both sides external, the right side variable-frequency motor is connected with axial fan by power transmission shaft, and be placed in the casing both sides external, the left side variable-frequency motor is connected with centrifugal fan by power transmission shaft, the box house rear side has venting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206869479U CN202989229U (en) | 2012-12-13 | 2012-12-13 | Deep cold box of double-refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206869479U CN202989229U (en) | 2012-12-13 | 2012-12-13 | Deep cold box of double-refrigerating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202989229U true CN202989229U (en) | 2013-06-12 |
Family
ID=48560425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206869479U Expired - Fee Related CN202989229U (en) | 2012-12-13 | 2012-12-13 | Deep cold box of double-refrigerating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202989229U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103589840A (en) * | 2013-11-26 | 2014-02-19 | 天津市热处理研究所有限公司 | High-efficiency energy-saving apparatus used for cryogenic treatment |
| WO2015081478A1 (en) * | 2013-12-03 | 2015-06-11 | Linde Aktiengesellschaft | Device for treatment of parts at low temperatures |
| CN109536687A (en) * | 2018-12-20 | 2019-03-29 | 中国科学院理化技术研究所 | Cryogenic treatment equipment and treatment method thereof |
| CN109556337A (en) * | 2018-12-03 | 2019-04-02 | 天津市热处理研究所有限公司 | A kind of dual chamber cryogenic treatment apparatus |
| CN114739074A (en) * | 2022-03-31 | 2022-07-12 | 青岛海尔生物医疗股份有限公司 | Method and device for cooling program cooling instrument and program cooling instrument |
-
2012
- 2012-12-13 CN CN2012206869479U patent/CN202989229U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103589840A (en) * | 2013-11-26 | 2014-02-19 | 天津市热处理研究所有限公司 | High-efficiency energy-saving apparatus used for cryogenic treatment |
| WO2015081478A1 (en) * | 2013-12-03 | 2015-06-11 | Linde Aktiengesellschaft | Device for treatment of parts at low temperatures |
| CN109556337A (en) * | 2018-12-03 | 2019-04-02 | 天津市热处理研究所有限公司 | A kind of dual chamber cryogenic treatment apparatus |
| CN109536687A (en) * | 2018-12-20 | 2019-03-29 | 中国科学院理化技术研究所 | Cryogenic treatment equipment and treatment method thereof |
| CN109536687B (en) * | 2018-12-20 | 2023-12-19 | 中国科学院理化技术研究所 | Cryogenic treatment equipment and treatment method thereof |
| CN114739074A (en) * | 2022-03-31 | 2022-07-12 | 青岛海尔生物医疗股份有限公司 | Method and device for cooling program cooling instrument and program cooling instrument |
| CN114739074B (en) * | 2022-03-31 | 2023-06-16 | 青岛海尔生物医疗股份有限公司 | Method and device for cooling program cooling instrument and program cooling instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20151213 |
|
| EXPY | Termination of patent right or utility model |