Piezoelectric drive type miniature thermoacoustic refrigerator

Abstract

The invention discloses a piezoelectric drive type miniature thermoacoustic refrigerator. The piezoelectric drive type miniature thermoacoustic refrigerator is mainly composed of a piezoelectric buzzer, resonator tubes, a regenerator and heat exchangers. The piezoelectric buzzer, the hot-end resonator tube and the hot-end heat exchanger are sequentially connected; the regenerator is located between the hot-end heat exchanger and the cold-end heat exchanger; the rear portion of the cold-end heat exchanger is connected with the resonator tube with one open end and one closed end, and therefore the thermoacoustic refrigerator forms a closed loop and standing waves are generated in the loop. According to the related knowledge of the thermoacoustic theory, a pump heating effect is generated in the regenerator through the standing waves, so that a temperature difference is generated between the two ends of the regenerator, and the refrigeration effect is achieved through heat exchange between the cold-end heat exchanger and the outside as well as between the hot-end heat exchanger and the outside. The refrigerator is simple in structure, free of any moving component, miniaturized, environmentally friendly, and suitable for heat dissipation of electronic elements.

Description

technical field [0001] The invention relates to a refrigeration device, in particular to a miniature thermoacoustic refrigeration device applied in the electronic field. Background technique [0002] With the rapid development of microelectronics technology, the requirements for cooling and heat dissipation of microelectronic devices are constantly increasing. Traditional cooling and heat dissipation devices can no longer meet the requirements, which restricts the development of microelectronics technology. Therefore, it is of great significance to research and develop efficient micro-refrigeration technology. [0003] Compared with traditional refrigeration and heat dissipation devices, thermoacoustic refrigerators have many advantages such as simple structure, high reliability, long life, no moving parts, no environmental pollution, wide operating temperature range, and low energy requirements. It reduces the volume and quality of the system under high-frequency operation...

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Problems solved by technology

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a piezoelectric-driven miniature thermoacoustic refrigerator, which solves the problems of low reliability, loud noise, and slow heat dissipation caused by the traditional fan heat dissipation.

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