Self-decompression valve mechanism and low temperature refrigerator adopting self-decompression valve mechanism
A technology for low-temperature refrigerators and gas distribution mechanisms, which is applied to gas cycle refrigerators, refrigerators, compressors, etc., and can solve problems such as large positive pressure, wear of rotary valves, and reduced reliability of equipment, so as to reduce positive pressure and prolong Service life, effect of reducing plane wear
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[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0027] Such as Figure 2-7 As shown: a self-decompression gas distribution mechanism, including a gas distribution valve 6 and a rotary valve 7. The gas distribution valve 6 is provided with a high-pressure air hole 62 penetrating the gas distribution valve 6 in the axial direction, and penetrating the gas distribution valve in the bending direction. 6, the gas distribution valve hole 63, the high-pressure gas hole 62 can communicate with the high-pressure exhaust pipeline 1a of the compressor 1, and the gas distribution valve hole 63 can communicate with the cover body gas hole 21 on the cover body 2; The high-pressure groove 72 on the valve 7 communicates with the air distribution valve air hole 63 and the housing air hole 21; The circumferential surface of the gas distribution valve 6 is provided with a first sealing ring b1 and a second sealing rin...
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