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Stirling refrigerating machine being as cold source of low temperature refrigerator

A technology of refrigerators and regenerators, applied in refrigerators, gas cycle refrigerators, refrigeration and liquefaction, etc., can solve the problems of reduced cooling capacity, fatigue damage of elastic diaphragms, and deterioration of overall machine performance, and achieve high refrigeration efficiency. Good reliability and large cooling capacity

Inactive Publication Date: 2007-05-09
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Chinese patent CN98218736.X and U.S. patent US6546738B2 disclose integral Stirling refrigerators driven by a crank-link mechanism. The disadvantage is that oil must be used for lubrication. Helium (helium) will cause pollution, long-term operation will deteriorate the performance of the whole machine, and the cooling capacity will continue to decrease
Chinese patent CN1677018 discloses a Stirling refrigeration system driven by an oil-lubricated compressor using an elastic diaphragm. Guarantee the long-life operation of the entire refrigerator
This Stirling refrigerator structure is not suitable for cold source of low temperature refrigerator

Method used

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  • Stirling refrigerating machine being as cold source of low temperature refrigerator
  • Stirling refrigerating machine being as cold source of low temperature refrigerator
  • Stirling refrigerating machine being as cold source of low temperature refrigerator

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Embodiment Construction

[0021] In order to better understand the technical solutions of the present invention, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings:

[0022] From Fig. 1, the base 16 is used as a partition, the lower half is the compressor structure, and the upper half is the expander mechanism. The compressor is composed of motor, plate spring, piston body, spring bracket, compressor back cover and so on.

[0023] The moving magnet linear motor is composed of a mover 19, a stator 23, a coil 18 and an inner magnetic pole 22. The stator 23 is fixed on the base 16 by long screws 44 . The coil 18 is placed in the stator 23 , the inner magnetic pole 22 is fixed on the base 16 by screws 45 , and the mover 19 is connected to the compression piston 14 through the compression piston bracket 24 . The compressor plate spring support 34 is fixed to the motor stator 23 by screws 43 , and the expander plate s...

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Abstract

A Stirling refrigerator used as refrigeration source of low temperature freezer is prepared as arranging compression cavity and expansion cavity coaxially, using plate spring to support expansion piston and compression piston, applying seal structure at gap between piston and air cylinder, using a moving-magnet linear motor as driving motor of compression, setting no motor on expansion machine, applying pneumatic driving on expansion piston, using linear cut red copper ring as heat radiator, building in red copper ring in heat exchanger setting cold storage to be ring structure and arranging hole on wall of expansion cylinder to let He enter to compression cavity.

Description

Technical field: [0001] The invention relates to a Stirling refrigerator, in particular to an integral free-piston Stirling refrigerator which can be used as a cold source for a low-temperature refrigerator. Background technique: [0002] At present, the market demand for high-efficiency, low-cost, high-reliability and easy-to-use low-temperature refrigerators is becoming more and more urgent. However, many existing technologies are only further improvements to the traditional vapor compression throttling refrigeration refrigerator system, and their effects are limited, and they cannot balance the destruction of the ozone layer and the improvement of refrigeration efficiency. Therefore, it is necessary to seek a new refrigeration cycle technology, and it will be a qualitative breakthrough to use the Stirling refrigeration cycle as an alternative technology for the existing steam throttling cascade cryogenic refrigerator. [0003] The Stirling refrigerator adopts a closed cy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B9/14
CPCF25B9/14F25B2309/001
Inventor 吴亦农陈曦陈楠
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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