A cold end heat exchanger for a Stirling refrigerator

A cold-end heat exchanger and refrigerator technology, applied in refrigerators, refrigeration and liquefaction, compressors, etc., can solve the problems of insignificant improvement of heat exchange effect and low thermal conductivity, and achieve the elimination of contact thermal resistance and heat exchange. The effect of increasing the area and increasing the cooling capacity

Active Publication Date: 2016-01-13
CHINA ELECTRONICS TECH GROUP CORP NO 16 INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although opening slits on the cylinder wall can increase the heat transfer area, the heat transfer effect is not significantly improved because the cylinder wall is thin and stainless steel or titanium alloy with low thermal conductivity is mostly used.

Method used

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  • A cold end heat exchanger for a Stirling refrigerator
  • A cold end heat exchanger for a Stirling refrigerator
  • A cold end heat exchanger for a Stirling refrigerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing:

[0023] Such as Figure 1-Figure 4 A cold end heat exchanger for a Stirling refrigerator is shown, including a cold head 101, a regenerator air outlet cover 108, a regenerator air outlet 109 arranged on the regenerator air outlet cover 108 and The expansion cavity 110 , the cold head includes a cold head inner top surface 102 and a cold head inner wall surface 103 . The cold head 101 of the Stirling refrigerator according to the present invention adopts high thermal conductivity material copper. Both the inner top surface 102 of the cold head and the outer top surface 111 of the gas outlet end cover of the regenerator adopt a dome structure, and the shapes of the two are consistent. A plurality of evenly distributed top slits 104 are opened on the inner top surface 102 of the cold head, and a plurality of evenly distributed wall slits 105 are opened on the inner wall surfa...

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PUM

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Abstract

The invention relates to a cold-end heat exchanger for a Stirling refrigerator. The cold-end heat exchanger for the Stirling refrigerator comprises a cold head, a regenerator vent end cover, a regenerator vent hole and an expansion cavity, wherein the regenerator vent hole is formed in the regenerator vent end cover. The cold head comprises a cold head inner top face and a cold head inner wall face. The cold head inner top face and the cold head inner wall face are respectively of a dome structure, are fitted in appearance, and are provided with a plurality of evenly distributed top face slots and a plurality of evenly distributed wall face slots respectively. The top face slots correspond to the wall face slots one by one and are communicated with the wall face slots. The top of the cold head inner top face is provided with a hollow cylindrical gas storage tank defined by the top face slots. The regenerator vent end cover is provided with a plurality of evenly distributed regenerator vent holes in an inclined mode. The cold head inner wall face is provided with a boss. The wall face slots are formed in the side face of the boss. The cold-end heat exchanger for the Stirling refrigerator has the advantages that the heat exchange area is large, the heat transfer coefficient is large, contact thermal resistance is avoided, gas resistance is small and machining is convenient. The heat exchange capacity of the cold-end heat exchanger for the Stirling refrigerator can be improved by more than 30%.

Description

technical field [0001] The invention relates to the technical field of Stirling refrigerators, in particular to a cold-end heat exchanger for Stirling refrigerators. Background technique [0002] The cold end heat exchanger is an important heat exchange part of the Stirling refrigerator, and its heat transfer performance directly affects the performance of the Stirling refrigerator. Due to the small heat transfer area and low heat transfer coefficient between the gas in the expansion chamber of the Stirling refrigerator and the cold-end heat exchanger, the heat transfer resistance between the gas and the cold-end heat exchanger is relatively large, resulting in the Stirling refrigerator Cooling capacity is severely limited. Therefore, increasing the heat transfer coefficient and heat transfer area of ​​the cold-end heat exchanger can effectively increase the cooling capacity of the Stirling refrigerator, thereby increasing the COP of the refrigerator. [0003] At present, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B9/14
Inventor 王建中王波吴维薇
Owner CHINA ELECTRONICS TECH GROUP CORP NO 16 INST
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