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Subzero treatment device

A cryogenic treatment and cryogenic technology, applied in the field of low temperature, can solve the problems of poor temperature control accuracy, short life, high failure rate, etc., and achieve the effects of reducing energy consumption, simplifying the structure, and reducing the incidence of failure

Pending Publication Date: 2017-11-14
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing problems are: (1) The fan or blower has high failure rate and short service life under low temperature and severe working conditions; (2) The fan or blower needs additional power input, and at the same time, according to the energy relationship, liquid nitrogen cooling capacity is required to Bridging this part of electric energy increases the consumption of liquid nitrogen. (3) In the cryogenic treatment device using fans, it is difficult to mix the fresh air with liquid nitrogen evenly, which will lead to poor temperature control accuracy.

Method used

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Embodiment Construction

[0024] Please refer to figure 1 , a cryogenic treatment device provided in an embodiment of the present invention, comprising: a liquid nitrogen tank (1), a low-temperature infusion tube (2), a low-temperature regulating valve (3), a liquid-gas ejector (4), a cryogenic box Body (5), exhaust gas return line (6), temperature sensor (7) and controller (8). in:

[0025] The mouth of the liquid nitrogen tank (1) is connected to one end of the cryogenic infusion pipe (2), the low temperature regulating valve (3) is installed on the pipeline of the cryogenic infusion pipe (2), and the low temperature regulating valve (3) is The valve (3) is electrically connected to the controller (8), the other end of the cryogenic infusion tube (2) is connected to the liquid-gas ejector (4), and the liquid-gas ejector (4) Set in the cryogenic box (5), the side of the cryogenic box (5) opposite to the low-temperature infusion tube (2) is connected with the exhaust gas return line (6) , the temper...

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Abstract

The invention provides a subzero treatment device. The original fan design is replaced by adopting a liquid-gas ejector, the pressure of liquid nitrogen as a cooling medium is reduced, the speed is increased, partial vacuum is formed in the liquid-gas ejector, and fresh air is introduced so as to be uniformly mixed with the liquid nitrogen, so that partial gasification of the liquid nitrogen is realized, and a workpiece is preferably cooled after the air volume is increased; driving fluid in the ejector comes from low-temperature nitrogen in a box body of subzero equipment, and the cooling capacity of the driving fluid is recycled, so that the utilization rate of the cooling capacity can be further increased, and the problems of frosting and blockage are avoided.

Description

technical field [0001] The invention relates to the field of low temperature technology, in particular to a cryogenic treatment device. Background technique [0002] Cryogenic treatment is a technology that places the workpiece in a specific and controllable low temperature environment (below -100°C) to transform the microstructure of the material and improve the performance of the material. Cryogenic treatment can improve the wear resistance, toughness, hardness, dimensional stability, corrosion resistance and service life of some materials to varying degrees. At the same time, cryogenic treatment can process workpieces with complex shapes, causing damage to the surface of the workpiece, and is environmentally friendly and pollution-free. The cryogenic treatment process is a common method of subsequent heat treatment in foreign countries, and it is being gradually promoted in our country. [0003] The cryogenic treatment device is a device that can heat and heat the mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D3/10F25D29/00
CPCF25D3/10F25D29/001F25D2700/12
Inventor 王俊杰郑建朋郭嘉顾开选黄碧涵周远
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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