Screw thread welding integral narrow slit type coaxial pulse-tube refrigerator

Abstract

The invention discloses a thread weld integral slit type coxial vessle refrigerator, including a compressor, an air line, a fire end flange, a vessle, a cold accumulator, an upper cold head, a lower cold head, a cold end baffle, a copper wire, a first fire end diffuser, a second fire end diffuser, a cold accumulator core plug, a long neck tube and an air reservior, wherein the two ends of the upper cold head have a internal thread with one end welded with the threaded connection of the lower cold head and the other end welded with one end of the cold accumulator after the threaded connection; a round hole is arranged at the center of the upper cold head, and radial slot distributed uniformly are arranged round the round hole; a cold end baffle is arranged in the round hole, and the part of the outside of the cold end baffle is the cold accumulator cold end air applicator part, while the inner part of the cold end baffle is the stacked copper wire and a vessle extending section of the vessle cold end diffuser. The air in the cold accumulator and the vessle communicate with the slot of the upper cold head and the lower cold head by the welding way. The cold head of the invention has large heat exchange area, and the welding structure ensures the leak detection safety of the pressure gas the welding reliability.

Description

technical field [0001] The invention relates to a device in the technical field of refrigeration, in particular to a screw-welded integral slit coaxial pulse tube refrigerator. Background technique [0002] The pulse tube refrigerator uses high and low pressure gas to charge and deflate the cavity of the pulse tube to obtain the cooling effect. According to the position of cold storage and pulse tube in the pulse tube refrigerator, it can be divided into coaxial type, U type and coupling type. From a structural point of view, for the optimized coaxial arrangement of pulse tube refrigerators, they are more compact and small in size and have attracted widespread attention. People have been improving the structure of the pulse tube refrigerator to further improve its performance. The gas in the coaxial pulse tube refrigerator produces a cooling effect at the cold end, and the gas in the regenerator bends 180° into the pulse tube after passing through the heat exchanger at the...

AI Technical Summary

Problems solved by technology

Moreover, as the laminarization element at the cold end of the pulse tube, the central circular hole and radial slit structure have poor effect on the laminarization of the working gas.

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