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Cold platform of Stirling cryocooler

A cold platform and refrigerator technology, which is applied in refrigerators, refrigeration and liquefaction, compressors, etc., can solve the requirements of small cooling capacity, small head surface area, and cannot meet the temperature uniformity requirements of transmission detector chips with large cooling capacity, etc. problem, to achieve the effect of reducing impact and uniform temperature distribution

Inactive Publication Date: 2015-07-29
CHINA ELECTRONICS TECH GROUP CORP NO 16 INST
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the shortcomings of small head surface area, small cooling capacity, and short cooling transmission distance, the traditional plug-in coupling method has been unable to meet the needs of ultra-long line arrays and ultra-large-scale detector chips for large cooling transmission, overall vibration and detector chips. Temperature Uniformity Requirements

Method used

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  • Cold platform of Stirling cryocooler
  • Cold platform of Stirling cryocooler
  • Cold platform of Stirling cryocooler

Examples

Experimental program
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Embodiment Construction

[0017] The present invention will be further explained below in conjunction with the drawings:

[0018] Such as figure 1 The cold platform of a Stirling refrigerator shown includes a closed vacuum space 3 composed of a transition flange 1 and a Dewar 2. The expander 4 is fixed on the transition flange 1 and the cold head 5 of the expander 4 is located In the enclosed vacuum space 3, the cold head 5 is connected to the cold plate 7 through a flexible cold chain 6, and a supporting device is provided between the cold plate 7 and the transition flange 1 to connect the two.

[0019] Further, such as Figure 4 As shown, the upper plate surface of the cold plate 7 is coupled with the detector chip, the lower plate surface of the cold plate 7 and the cold head 5 are connected by three flexible cold chains 6, and the three flexible cold chains 6 are respectively connected to the lower plate surface of the cold plate 5. The two ends of the flexible cold chain 6 are rigidly connected to the...

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Abstract

The invention relates to a cold platform of a Stirling cryocooler. The cold platform comprises sealed vacuum space formed by a transition flange and a Dewar. An expansion machine is fixed on the transition flange, and a cold head of the expansion machine is disposed in the vacuum space and is connected with a cold plate through flexible cold chains, and a support unit connecting the cold plate with the transition flange is arranged between the cold plate and the transition flange. By means of the cold platform, the cold head and the lower plate surface of the cold plate are connected through the flexible cold chains, and accordingly, concentrated refrigerating and multi-point cooling effects are provided, and the cold plate temperature is distributed uniformly; meanwhile, vibration produced by the cold head is absorbed through the flexible cold chains, so that impact on the cold plate is reduced, and a vibration reduction purpose is provided.

Description

Technical field [0001] The invention relates to the field of low-temperature refrigeration, in particular to a cold platform of a Stirling refrigerator. Background technique [0002] At present, the transmission of cold energy under ultra-low temperature is mainly the heat conduction process between the cold head of the Stirling refrigerator and the detector chip through the plug-in coupling method, so that the cold energy generated by the Stirling refrigerator is transferred to the detector chip. The plug-in coupling method mainly uses the small area contact between the metal surface of the cold head end face and the end face of the detector chip to transmit the cold energy to the detector in a short distance to ensure the stability of the chip temperature during the working period of the detector, and to meet the needs of the detector chip for ultra-low temperature. This method has a good cooling effect on small detector chips. However, with the development of detector techno...

Claims

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Application Information

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IPC IPC(8): F25B9/14
CPCF25B9/14
Inventor 魏露露陆永达陈怀军单伟根张继宇熊建华
Owner CHINA ELECTRONICS TECH GROUP CORP NO 16 INST
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