Coupled apparatus used between heat phonomotor and refrigerating device driven by the same

A technology of thermoacoustic engine and coupling device, which is applied in the direction of hot gas variable volume engine device, refrigerator, machine/engine, etc., can solve the problems of low efficiency, consumption of helium, and poor refrigeration performance.
CN100565039CInactive Publication Date: 2009-12-02TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Publication Date
2009-12-02
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a coupling device for a thermoacoustic engine and a refrigerator driven by it, comprising: a cavity; an elastic diaphragm installed in the cavity, and the elastic diaphragm divides the cavity into first chambers and the second chamber; a long tube communicated on one side wall of the cavity and communicated with the first chamber; a short tube communicated on the other side wall of the cavity and communicated with the second chamber; The other end is connected to the feedback tube of the thermoacoustic engine; the other end of the short tube is connected to the water cooler of the refrigerator; the coupling device can amplify the pressure amplitude of the pressure wave generated by the thermoacoustic engine after passing through the long tube and the cavity, Thereby, the utilization rate of the sound power of the system by the refrigerator is improved; the elastic diaphragm sandwiched in the middle of the cavity isolates the working gas in the engine and the refrigerator, so that the engine can use nitrogen and other gases as the working fluid to reduce the system frequency, and the refrigerator can use helium. Gas and other gases are used as working fluids to maintain their good refrigeration performance.
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Description

field of invention

[0001] The present invention mainly relates to the field of energy utilization and refrigeration, in particular to a coupling device used between a thermoacoustic engine and a refrigerator driven by it; the coupling device can improve the utilization rate of sound power of the refrigerator system driven by a thermoacoustic engine, Reduce operating frequency. Background technique

[0002] The thermoacoustic engine-driven pulse tube refrigerator, or thermoacoustic refrigerator, is a new type of refrigeration technology that has no moving parts at all. It uses thermal energy as power, through the oscillation of gas, converts internal energy into sound work in the engine, and consumes sound work in the refrigerator to produce cooling effect. It is environmentally friendly, safe, and has a long service life, so it has a very good application prospect.

[0003] At present, its refrigeration temperature range has covered from room temperature to liquid hydrogen ...

Claims

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