Integrated slit cold head of U-shaped pulse tube refrigerating machine and manufacturing method
A technology of pulse tube refrigerator and manufacturing method, which is applied in refrigerators, gas circulation refrigerators, refrigeration and liquefaction, etc., and can solve the problems of excessive dead volume, insufficient heat exchange area of air flow, large resistance at connecting thin tubes and Cooling loss and other issues
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[0036] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings:
[0037] The integrated slit cold head of the U-shaped pulse tube refrigerator of the present invention is composed of a top cover 0 and a lower flange 13. To enhance heat exchange, both parts are made of high thermal conductivity materials.
[0038] Such as Figure 4 As shown in (a): the lower part of the upper platform 1 of the top cover 0 first protrudes a large boss 2 with a diameter slightly smaller than the upper platform 1, and two more protrudes on the top of the large boss 2 and outside the large boss 2 The cold storage side cylindrical boss 3 and the pulse tube side cylindrical boss 4 with tangent edges ensure that the outer diameters of the cold storage side cylindrical boss 3 and the pulse tube side cylindrical boss 4 are respectively the same as the cold storage 14 and pulse The inner diameter of the pipe 15 is equal, and th...
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