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Low-temperature cold trap

A low-temperature cold trap and cold trap technology, which is applied in the direction of condensation trap/cold partition, refrigeration and liquefaction, separation methods, etc., to achieve the effects of improving efficiency, solving ice blockage, and shortening cooling time

Inactive Publication Date: 2010-06-02
PEKING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no commercially available cryogenic trap for gas trapping in experiments.

Method used

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Examples

Experimental program
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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] The invention includes a box body, and the low-temperature cold trap device is placed in the box body. The low temperature cold trap device includes a refrigeration system, a cold trap component and a heating component.

[0022] The refrigeration system includes a two-stage closed loop system, such as figure 1 As shown, the first-stage closed loop system of the refrigeration system includes a primary compressor 1 , a condenser 3 , a primary heat exchanger 5 , a capillary tube 7 and an evaporative condenser 10 . The condenser 3 is connected between the primary compressor 1 and the primary heat exchanger 5; the capillary tube 7 is connected between the primary heat exchanger 5 and the evaporative condenser 10; the primary compressor 1 and the primary heat exchanger 5 Connected to form a first-stage closed-circuit circulation system of primary c...

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Abstract

A cryotrap which is characterized in that it includes a cabinet in which the cryotrap is located; the cryotrap includes a refrigeration system, a cold trap part and heating parts; said refrigeration system includes a first stage closed circulation system and and a second stage closed circulation system, two different refrigerants are circulated in the two stage closed circulation systems respectively; said cold trap part consists of an evaporator which is arranged in the second stage closed circulation system and provided with a plurality of evaporator pipes, and cold trap pipes are arranged in the evaporator pipes; the outer part of the evaporator is sealed by the cabinet made of organic glass sheets, heat preservation and dehumidifying materials are filled between the evaporator and theglass sheets; said heating parts include a power supply, a control chip and a plurality of heating furnace wires, each of the cold trap pipe is provided with a heating furnace wire. The present invention has solved the waste problem of refrigerant effectively, improved the heat energy transfer efficiency and reduced the cooling time, moreover, it has solved the problem of ice blocking.

Description

technical field [0001] The invention relates to a refrigeration device, in particular to a low-temperature cold trap for trapping condensable gas. Background technique [0002] In the production processes such as drying and freeze-drying, it is necessary to use cold traps to capture or cool and recover condensable gases. Cold traps, also known as condensation traps, are widely used in biochemical petroleum experiments, low-temperature liquid baths, drug freeze-drying, and gas trapping. At present, there are two refrigeration methods for cryogenic traps: semiconductor refrigeration and liquid nitrogen refrigeration. [0003] The refrigeration device of the semiconductor cold trap uses special semiconductor materials, and it directly cools after power on without refrigerant. Semiconductor refrigeration has the advantages of continuous operation, no gyration effect, no vibration and noise during operation, long life and easy installation. And because it is a current-transfor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D8/00
Inventor 曾立民刘兴隆
Owner PEKING UNIV
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