Heat regenerator of Stirling cryocooler and processing method of packing bodies for heat regenerator

A technology of regenerators and refrigerators, which is applied in the direction of refrigerators, superheaters, refrigeration components, etc., can solve the problems of inconvenient cleaning or replacement, cumbersome removal operations, and low heat exchange efficiency, so as to improve the speed of disassembly and assembly, Large heat transfer surface area, the effect of improving heat transfer efficiency

Active Publication Date: 2017-01-04
KUNMING INST OF PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, Stirling refrigerators generally use stainless steel wire mesh as filler. The wire diameter of stainless steel wire mesh is generally about 0.03mm, so its processing and assembly are complicated, especially the filling density of the filler is difficult to control, resulting in low heat transfer efficiency.
However, it is extremely inconvenient for the packing to be removed for cleaning or replacement, which can easily lead to damage to the packing, and the removal operation is cumbersome

Method used

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  • Heat regenerator of Stirling cryocooler and processing method of packing bodies for heat regenerator
  • Heat regenerator of Stirling cryocooler and processing method of packing bodies for heat regenerator
  • Heat regenerator of Stirling cryocooler and processing method of packing bodies for heat regenerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as Figure 1-7 The regenerator of the Stirling refrigerator shown includes a cylinder body 1 and a packing body 2 filled in the cylinder body 1; frame 3; the mounting frame 3 includes a first ring plate 4 located at the end of the cylinder body 1, a second ring plate 5 located inside the cylinder body 1 and the outer edge of which is attached to the inner wall of the cylinder body 1, and four connecting the first ring plate 5 4 end faces of a ring plate and the guide bar 6 on the outer edge of the second ring plate 5, along the circumferential direction of the first ring plate 4; the inner diameter of the first ring plate 4 is equal to the outer diameter of the second ring plate 5 diameter, its outer diameter is greater than the inner diameter of the cylinder 1; the inward wall of the guide bar 6 is flush with the inner wall of the cylinder 1; the inner wall of the cylinder 1 is evenly distributed with four guide grooves 7 that are slidably matched with the guide b...

Embodiment 2

[0034] A method for processing a packing body used in a regenerator, comprising the following steps:

[0035] (1) Cloth, superimpose the selected pieces of stainless steel wire mesh to the required thickness, or evenly spread the messy stainless steel wire (extremely fine stainless steel wire) to the required thickness, and then compact it with tooling, the given The pressure is 400N, and the specific pressure is determined according to the porosity of the required sintered mesh or sintered felt;

[0036] (2) Put the compacted stainless steel wire mesh or evenly stacked stainless steel wire into a high-temperature vacuum furnace, heat up to 1250°C, and keep it at this temperature for 3 hours to obtain a sintered stainless steel wire mesh or stainless steel felt blank;

[0037] (3) Pass the protective gas into the high-temperature vacuum furnace to cool the sintered billet to room temperature;

[0038] (4) Machining the cooled sintered billet to the required shape and size to ...

Embodiment 3

[0040] A method for processing a packing body used in a regenerator, comprising the following steps:

[0041] (1) Cloth, superimpose the selected pieces of stainless steel wire mesh to the required thickness, or evenly spread the messy stainless steel wire (extremely fine stainless steel wire) to the required thickness, and then compact it with tooling, the given The pressure is 600N, and the specific pressure is determined according to the porosity of the required sintered mesh or sintered felt;

[0042] (2) Put the compacted stainless steel wire mesh or evenly stacked stainless steel wire into a high-temperature vacuum furnace, heat up to 1400°C, and keep it at this temperature for 2 hours to obtain a sintered stainless steel wire mesh or stainless steel felt blank;

[0043] (3) Pass the protective gas into the high-temperature vacuum furnace to cool the sintered billet to room temperature;

[0044] (4) Machining the cooled sintered billet to the required shape and size to ...

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Abstract

The invention discloses a heat regenerator of a Stirling cryocooler and a processing method of packing bodies for the heat regenerator, and aims at providing a high-heat-exchange-efficiency heat regenerator of a Stirling cryocooler and a processing method of packing bodies for the heat regenerator. The heat regenerator comprises a cylinder, the packing bodies arranged in the cylinder in a packing mode, and two installation frames. Each installation frame comprises a first ring plate located at the end of the cylinder, a second ring plate located in the cylinder, and four guide bars connected with the end face of the first ring plate and the outer edge of the second ring plate and evenly distributed in the circumferential direction of the first ring plate, wherein the outer edge of the second ring plate is attached to the inner wall of the cylinder, the inner diameter of the first ring plate is equal to the outer diameter of the second ring plate, the outer diameter of the first ring plate is larger than the inner diameter of the cylinder, the inward wall surfaces of the guide bars are flush with the inner wall of the cylinder, and four guide grooves in sliding fit with the guide bars are evenly distributed in the inner wall of the cylinder. The second ring plates of the two installation frames are spaced by a certain distance. The packing bodies are formed by a plurality of stainless steel sintered nets or a plurality of pieces of stainless steel sintered felt and are arranged in the installation frames in a packing mode respectively.

Description

technical field [0001] The invention relates to the technical field of Stirling refrigerators, in particular to a regenerator of a Stirling refrigerator and a processing method for a packing body used in the regenerator. Background technique [0002] The Stirling refrigerator consists of two parts, an expander and a compressor, which are connected by an air duct. It has the advantages of simple structure, convenient control, flexible installation and less vibration, and is widely used in aerospace, military and other departments. The expander is mainly composed of cold finger, regenerator, stepped piston, spring and base. The regenerator and the spring form a vibrator. Driven by the pressure wave of the refrigerant from the air duct, the vibrator resonates, causing the gas at the bottom of the cold finger to repeatedly expand and absorb heat, and exchange heat in the regenerator. produce refrigeration. [0003] The regenerator, also known as the regenerator, is a regenera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B40/06F27B21/00
CPCF25B40/06F27B21/00
Inventor 夏明陈军熊超习中立江重桦黄伟李海英
Owner KUNMING INST OF PHYSICS
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