Stirling refrigerator and assembly method

A technology for refrigerators and regenerators, which is applied to household refrigeration devices, refrigerators, refrigeration components, etc., can solve the problems of excessive mass and volume of the ejector and large dead volume of the compression chamber, so as to reduce the processing difficulty and cost, improve the Compact structure, the effect of reducing dead volume

Active Publication Date: 2020-10-30
RIZHAO CHINA STIRLING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a Stirling refrigerator and an assembly method to solve the problems of large mass and volume of the ejector of the Stirling cryogenic refrigerator with large cooling capacity and excessive dead volume of the compression chamber

Method used

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  • Stirling refrigerator and assembly method
  • Stirling refrigerator and assembly method
  • Stirling refrigerator and assembly method

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Experimental program
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Effect test

Embodiment approach

[0049] A specific assembly implementation method of the described Stirling refrigerator device has the following steps:

[0050] I. With the aid of positioning tooling, match the regenerator shell 201 with the cold-end heat exchanger 100, and perform vacuum brazing and sealing at the outer connection. After checking the airtightness of the weld, insert the regenerator inner wall 202 into the cold end. In the end heat exchanger 100, at the same time, the external positioning tool is used to ensure that the coaxiality between the inner wall 202 of the regenerator and the shell 201 of the regenerator is not greater than 0.03mm, and then the inner wall 202 of the regenerator is connected to the cold end heat exchanger 100 by a small amount of low-temperature epoxy glue. fixed;

[0051] II. Fill the cold accumulator 200 with stainless steel wire mesh with a wire diameter of 0.23um. The actual porosity after filling is about 0.785. After the filling is completed, install the diversi...

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Abstract

The invention discloses a Stirling refrigerator and an assembly method. The structure of the Stirling refrigerator mainly comprises a cold end heat exchanger, a regenerator, a hot end heat exchanger,a radiator, a discharger, a plate spring support assembly, a disc-shaped core rod, a cap, an intake joint and a damping structure. The Stirling refrigerator adopts a cylindrical assembly coaxial arrangement mode; the cold end heat exchanger is at about a liquid nitrogen temperature (77 K), and the hot end heat exchanger is at a room temperature; the contact surfaces of the cap and the disc-shapedcore rod are provided with corresponding open channels, respectively; gas guide channels are peripherally and uniformly distributed in a first compression cavity; the plate spring support assembly inthe discharger provides enough radial supporting to maintain the gap sealing of movement of the discharger; and the appropriately passive damping structure is mounted to eliminate axial vibration of the refrigerator so as to guarantee the system reliability. The apparatus has the advantages of compact overall structure of the refrigerator, simple assembly process, improved practicability of the Stirling refrigerator and enhanced use convenience.

Description

Technical field: [0001] The invention belongs to the field of regenerative low-temperature refrigerators, and in particular relates to a Stirling refrigerator and an assembly method. Background technique: [0002] The small regenerative low-temperature refrigerator has a wide cooling temperature range, high cooling efficiency at low temperatures, environmentally friendly refrigerant, and easy adjustment of cooling capacity. The pneumatic Stirling refrigerator based on the Stirling thermodynamic cycle is used to achieve refrigeration through the movement of the ejector. Phase adjustment has the advantages of compact structure, fast cooling speed, low vibration level and high refrigeration efficiency, so it has a wide range of applications in the fields of aerospace, high-temperature superconductivity, infrared detection, and biomedicine. [0003] At present, the supporting structure of the connecting plate spring of the Stirling refrigerator is mostly external, that is, there...

Claims

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Application Information

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IPC IPC(8): F25B9/14F25B39/00F25D3/00F28F11/00F28F9/10
CPCF25B9/14F25B39/00F25D3/00F28F9/10F28F11/00
Inventor 邓伟峰赵胡荣徐军
Owner RIZHAO CHINA STIRLING TECH CO LTD
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