Etched metal sheet axial-filling type heat regenerator and assembling method of axial filling type heat regenerator

Abstract

The invention discloses an etched metal sheet axial-filling type heat regenerator and an assembling method of the axial filling type heat regenerator. The heat regenerator comprises a heat regenerator sleeve and axial packing therein; and the etched metal sheet is wrapped to form the axial packing. When the packing of the heat regenerator is assembled, the coiled axial packing tightly contacts the inner wall of the heat regenerator sleeve; the axial packing is formed by etching the metal sheet which is made of phosphor bronze or stainless steel, and the front and the back of the metal sheet are etched respectively. The etched metal sheet comprises a plurality of non-etched transverse strips, a plurality of front half-etched vertical strips and a plurality of back half-etched connecting arms; the vertical strips are arranged on one sides of the transverse strips, and each connecting arm is arranged between the corresponding two adjacent vertical strips which are not connected. Flow resistance loss can be reduced, the air volume of the heat regenerator can be reduced, a heat production way is elongated and heat conduction area is reduced due to a proper etching mode, and accordingly axial heat conduction loss is reduced.

Description

technical field [0001] The invention belongs to the technical field of low-temperature refrigeration, and relates to a regenerator, in particular to an etched metal sheet axially filled regenerator; at the same time, the invention also relates to an assembly method of the regenerator. Background technique [0002] Cryogenic refrigerators have important applications in many departments of modern science and technology, such as military infrared detectors, low-temperature thermal imaging cameras in low-temperature medicine, low-temperature micro-cold knives, cooling of photoelectric remote sensing components in space technology, and superconductivity in 3G communications. Cooling of filters, cryogenic vacuum pumps, etc. all require regenerative cryogenic refrigerators. The regenerator is the key component of the regenerative gas refrigerator. The heat transferred through the regenerator is 10 to 50 times larger than the cooling capacity of the gas refrigerator. Therefore, its ...

AI Technical Summary

Problems solved by technology

[0004] The current research on regenerators mostly focuses on the filling structure and filler material of the regenerator. The advantage of the radial filling regenerator is that the axial heat conduction loss is small, but the disadvantage is that the radial heat conduction loss is large and the flow resistance is large; The advantage of the filled regenerator is that the radial heat conduction loss is small and the flow resistance is small, but its axial heat conduction loss is large

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