Thermoacoustically driven solid refrigerator

Abstract

The invention discloses a thermoacoustically driven solid refrigerator which is free of movement parts, low in vibration and capable of improving performance thereof. The refrigerator comprises a plurality of thermoacoustic engine components connected in an end-to-end manner and a plurality of electric card refrigeration units disposed in a thermoacoustic engine loop. Each thermoacoustic engine component comprises a resonance tube, a thermal buffer tube side room temperature heat exchanger, a thermal buffer tube, a high temperature side heat exchanger, a regenerator, an engine side room temperature heat exchanger and a connecting chamber. The thermoacoustic engine components connected in an end-to-end manner form a travelling wave loop; in the loop, each thermal buffer tube is used for isolating heat leakage between each high temperature side heat exchanger and the corresponding thermal buffer tube side room temperature heat exchanger; each resonance tube is a metal hollow tube and used for controlling whole-machine running frequency and sound field distribution characteristics. Each electric card refrigeration unit comprises a refrigerator side room temperature heat exchanger, an electric card material, a cold side heat exchanger, a refrigerator side thermal buffer tube, a second refrigerator side room temperature heat exchanger and two connecting electrodes, wherein each end of each electric card material is connected with one connecting electrode.

Description

technical field [0001] The invention relates to the field of solid refrigeration, in particular to a solid refrigerator driven by thermoacoustics. Background technique [0002] In the fields of room temperature cooling (refrigerators, air conditioners, heat pump applications, etc.), vapor compression refrigeration technology has been widely used. It uses Freon and other fluids as refrigerants, and uses the Joule-Thomson effect of refrigerants to obtain refrigeration. This technology It is relatively mature and has been widely used; while semiconductor refrigeration uses the Peltier effect to form a temperature difference. Under the action of an external electric field, the movement of carriers in the semiconductor causes a temperature gradient. The Peltier effect (1834) is relatively mature, with long life and no vibration. However, the efficiency is relatively low, and it can only be used in portable refrigerators, local cooling of electronic devices, small medical equipmen...

AI Technical Summary

Problems solved by technology

[0009] However, although the solid-state refrigeration device based on the electric card effect can obtain the electric card material with a large electric card effect, there are still many problems to be solved urgently in forming the refrigeration cycle of the whole machine

At present, electric card refrigeration devices mostly use stepping motors, rotary motors, etc. to drive pistons, and then promote heat exchange between fluid and electric card materials, forming a regenerative refrigeration cycle. Vibration limits its application and development

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