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Coaxial travelling-wave thermo acoustic drive refrigerating system

A technology of refrigeration system and thermoacoustic refrigerator, which is applied in the field of refrigeration and low temperature. It can solve the problems that hinder the efficiency of the whole machine, and the pressure ratio of traveling wave thermoacoustic engine is not too high, so as to achieve size reduction, eliminate thermoacoustic direct current, and compact system structure. Effect

Inactive Publication Date: 2006-03-08
LIHAN THERMOACOUSTIC TECH SHENZHEN
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  • Application Information

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Problems solved by technology

However, the current traveling wave thermoacoustic engine-driven traveling wave thermoacoustic refrigerator generally uses helium as the common working medium, so that the pressure ratio generated by the traveling wave thermoacoustic engine is not too high, which also hinders the improvement of the efficiency of the whole machine

Method used

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  • Coaxial travelling-wave thermo acoustic drive refrigerating system
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Embodiment 1

[0050] Such as figure 2 As shown, a coaxial traveling wave thermoacoustic engine 20 and a coaxial traveling wave thermoacoustic engine 21 are made respectively with the above method, and they are connected together through the same shell 16, and there is A cavity surrounded by a shell, in which a frequency modulation element is installed to strictly isolate the traveling wave thermoacoustic engine from the traveling wave thermoacoustic refrigerator, the frequency modulation element has the function of adjusting the frequency of the sound wave, replacing the traditional traveling wave thermoacoustic The engine drives the overly bulky resonant tube in the traveling wave thermoacoustic refrigerator, which simultaneously reduces the frequency of the sound waves. The FM element is an elastic diaphragm 19 made of silica gel, with a mass of 200 grams and a tension of 2000 N / m (this elastic diaphragm 19 can be selected from rubber or polyester plastics as required, and of course spri...

Embodiment 2

[0055] Such as Figure 5 As shown, two coaxial traveling wave thermoacoustic engines and one coaxial traveling wave thermoacoustic refrigerator were fabricated respectively by the above method, and they were connected together through a "T" shaped casing, and the two traveling wave thermoacoustic The acoustic motors are arranged symmetrically to reduce system vibration. There is a cavity surrounded by a section of casing between the engine and the refrigerator, and a frequency modulation element is installed in the cavity. This frequency modulation element is an elastic diaphragm 19, which is located on the side close to the traveling wave thermoacoustic refrigerator. Perpendicular to the axis of the traveling-wave thermoacoustic refrigerator, it strictly isolates the traveling-wave thermoacoustic refrigerator from the two traveling-wave thermoacoustic engines, which are connected. The frequency modulation element has the function of adjusting the frequency of the sound wave,...

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Abstract

A refrigeration system of traveling wave thermo acoustic refrigerator driven by traveling wave thermo acoustic engine, which contains traveling wave thermo acoustic engine and traveling wave thermo acoustic refrigerator which are installed in a casing, a frequency modulation element strictly isolated installation between them, said traveling wave thermo acoustic engine is coaxial traveling wave thermo acoustic engine, said traveling wave thermo acoustic refrigerator is coaxial traveling wave thermo acoustic refrigerator. Said invention utilizes a fine quality elastic membrane and a elastic-quality frequency modulation element to replace respectively the function of inertia pipe and resonatron, adopts coaxial design thermo acoustic direct current.

Description

field of invention [0001] The invention relates to the technical field of refrigeration and low temperature, in particular to a refrigeration system in which a traveling wave thermoacoustic engine drives a traveling wave thermoacoustic refrigerator. Background technique [0002] A thermoacoustic engine-driven thermoacoustic refrigerator is a new approach to refrigeration that is completely free of moving parts. It runs stably and reliably, and has a long service life; it uses heat as energy, and can use solar energy, waste heat, etc. Broad development prospects. [0003] Since the operation of the standing wave thermoacoustic machine is based on the internal irreversible thermodynamic cycle, the entropy increase caused by the irreversible heat exchange between the gas and the plate stack reduces the conversion efficiency of the standing wave thermoacoustic machine, and its thermodynamic efficiency is often not very high , generally below 0.2, and the traveling wave thermoa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B23/00
Inventor 罗二仓胡剑英戴巍吴剑峰
Owner LIHAN THERMOACOUSTIC TECH SHENZHEN
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