Heat regenerator of heat-regenerating type low-temperature refrigerator

Abstract

The invention discloses a heat regenerator of a heat-regenerating type low-temperature refrigerator, which comprises a sleeve of a heat regenerator and a filler of the heat regenerator. The heat regenerator is characterized in that the sleeve of the heat regenerator is firstly filled with the radial filler and secondly filled with the axial filler, which are alternately filled, and finally with the radial filler; the radial filler is formed by tightly paving and overlapping 20-40 pieces of circular metal nets layer by layer, wherein the diameter of each piece of the circular metal net is equal to the inner diameter of the sleeve of the heat regenerator; the axial filler is formed by tightly winding through a square metal net piece along an edge metal wire; and the radial filler and the axial filler are tightly contacted with the inner wall of the sleeve of the heat regenerator. The depth m of the axial filler is larger than the depth n of the radial filler, and the voidage of the axial filler is less than that of the radial filler. The heat regenerator can realize high heat regenerating efficiency, low flow resistance, small axial heat-guiding loss and smaller empty cubage, and greatly improves the efficiency of the heat-regenerating type low-temperature refrigerator.

Description

technical field [0001] The invention relates to a regenerator of a recuperative low-temperature refrigerator. The regenerator is used for storing and releasing the cooling capacity of the reciprocating refrigerant gas between the high-temperature chamber and the low-temperature chamber of the recuperative low-temperature refrigerator. Background technique [0002] Regenerative cryogenic refrigerators have gained important applications in many departments of modern science and technology, such as the cooling of photoelectric remote sensing components in space technology, the cooling of superconducting filters in 3G communications, and cryogenic vacuum pumps, etc. all require regenerative cryogenic refrigerators . The regenerator is the core component of the regenerative cryogenic refrigerator, which is equipped with a metal mesh with a high mesh number and a large heat capacity. During the working process of the low-temperature refrigerator, the refrigerant gas flows alterna...

AI Technical Summary

Problems solved by technology

The disadvantage of this structure is that the thermal energy storage material is filled radially or obliquely, and the air flow resistance is large. At the same time, the performance of the aramid fiber thermal energy storage material used will decrease at lower temperatures, which is not suitable for low temperature refrigeration. machine

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