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G-M refrigerator with phase modulating mechanism

A refrigerator, G-M technology, applied in the direction of refrigerators, refrigeration and liquefaction, compressors, etc., can solve the problems of frictional heat and cooling loss, affecting the performance of refrigerators, and difficulty in meeting the requirements of low-temperature superconducting tests and applications, so as to prevent Air leakage loss, good performance effect

Active Publication Date: 2010-12-01
CSIC PRIDE (NANJING) CRYOGENIC TECHNOLOGY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the frictional heat generated by the sliding seal of the sealing ring in the cylinder will also cause the loss of cooling capacity
[0005] These cooling losses seriously affect the performance of the refrigerator, and it is difficult to meet the test and application requirements of low-temperature superconductivity

Method used

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  • G-M refrigerator with phase modulating mechanism
  • G-M refrigerator with phase modulating mechanism
  • G-M refrigerator with phase modulating mechanism

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] Such as figure 1 shown. A G-M refrigerator with a phase modulation mechanism, including a compressor 1, an intake valve 2, an exhaust valve 3, a regenerator 4, a cylinder 5, a piston 6, a hot chamber 7, a cold chamber 8, a driving mechanism, and an annular gap 13 and a heat exchanger 14, the outlet end of the compressor 1 is connected to the intake valve 2, the intake end of the compressor 1 is connected to the exhaust valve 3, the intake valve 2, the exhaust valve 3 and the regenerator 4 Connected and connected, the regenerator 4 is connected with the cylinder 5, and a heat exchanger 14 is arranged between the regenerator 4 and the cylinder 5; a piston 6 is arranged in the cylinder 5, the cold chamber 8 is located below the piston 6, and the hot chamber is located above the piston 6. There is an annular gap 13 between the chamber 7, the piston...

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Abstract

The invention relates to a G-M refrigerator with a phase modulating mechanism, which comprises a compressor (1), an air inlet valve (2), an exhaust valve (3), a heat regenerator (4), a cylinder (5), a piston (6), a hot cavity (7), a cold cavity (8), a sealing ring (9), driving mechanisms (10-12), an annular gap (13), a heat exchanger (14), an orifice valve (18) and an air reservoir (19). By introducing the phase modulating mechanisms, such as the orifice valve (18), the air reservoir (19) and the like, the working mode of gas in the annular gap (13) is changed to be identical to that of a vascular refrigerator with the phase modulating mechanism, a cooling effect is generated by fully utilizing the working doing through the expansion of the part of gas, and the gas leakage through the sealing ring (9) is eliminated, thereby improving the performance of the G-M refrigerator.

Description

technical field [0001] The invention relates to a low-temperature refrigerator, in particular to a regenerative low-temperature refrigerator, in particular to a G-M refrigerator with a phase adjustment mechanism. Background technique [0002] The G-M refrigeration cycle was jointly invented by Gifford and Mcmahon, and its principle is to use an adiabatic gas to deflate for refrigeration. Currently, G-M refrigerators have been widely used in cryopumps and cooling a variety of superconducting magnets. In application, the cold head of the refrigerator is generally used in direct contact or a material with high thermal conductivity is used as a thermal bridge to achieve cooling. [0003] At present, there is a gap between the cylinder wall and the piston of the commonly used G-M refrigerator, and the pressure in the refrigerator changes periodically, and the gap will cause pump air loss. The hot ends of the piston and cylinder are sealed with sealing rings, while the cold ends...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B9/14
CPCF25B9/14F25B9/10
Inventor 巢伟陈杰庄坤融高金林
Owner CSIC PRIDE (NANJING) CRYOGENIC TECHNOLOGY CO LTD
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