Thermoacoustic refrigeration device of automobile

Abstract

The invention discloses a thermoacoustic refrigeration device of an automobile. The thermoacoustic refrigeration device of the automobile comprises an automobile exhaust and waste heat heater, an acoustic capacitance tube, a heat buffer tube, an injection pump, a thermoacoustic backheating end cooler, a thermoacoustic heat regenerator, a diversion cooler, a feedback tube, a direct current-proofing spring diaphragm, a resonant cavity, a resonant cavity diaphragm, a resonant cavity, a vessel, a precooler, a refrigeration heat regenerator, a vessel cold side heat exchanger, a vessel hot end heat exchanger, a trachea, an air storeroom and a regulating valve. The invention is characterized in that the thermoacoustic refrigeration device not only can reduce the temperature of the tail gas discharged into atmosphere, but also can avoid the greenhouse effect and damage on ozonosphere caused by leakage of refrigerating fluid of the existing automobile, effectively protect the environment, can greatly save energy consumption of the automobile, and avoids the problems of insufficient power and the like of small-displacement automobiles caused by turning on automotive air conditionings.

Description

technical field [0001] The invention relates to a thermoacoustic refrigeration device, in particular to a thermoacoustic refrigeration device in a vehicle using a Stirling engine. Background technique [0002] With the development of the automobile industry in recent years, especially the rapid increase in the output of cars, the auto parts industry has also developed rapidly. As an important part to improve the comfort of automobiles, automobile air conditioners have been adopted by the majority of automobile manufacturers and enterprises. Consumers recognize that at present in China, the air-conditioning installation rate of domestic cars is close to 100%, and the installation rate on other models is also increasing year by year. Automobile air-conditioning devices have become important functional components in automobiles. Subsequently, the production and sales volume of domestic automobile air-conditioning manufacturers is also growing rapidly. According to incomplete st...

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Problems solved by technology

[0004] 1. Since part of the power of the engine is used for the air conditioner compressor, the fuel consumption increases by an average of 16% to 20%.

[0005] 2. Since part of the power of the engine is used for the compressor, the output power of the engine is reduced by 10% to 12%, which causes some problems in the configuration of the power source, especially in some small-displacement vehicles

[0006] 3. The working medium of automobile air conditioner damages the environment

Although absorption refrigeration has the advantages of no ODP and GWP problems, fewer mechanical moving parts, less power consumption, strong self-balancing ability, acceptable noise spectrum, less mechanical processing, and less difficulty, it also has complicated operation and maintenance. , The requirements for the vacuum degree are very strict, and it is easy to have the disadvantages of cooling capacity attenuation, long shutdown and start-up time, risk of crystallization, larger weight and size of the unit under the same capacity, only single evaporation temperature, and poor characteristics of variable working conditions; Although adsorption refrigeration has outstanding advantages such as using non-HCFCs as refrigerants, rarely using moving parts in the system, energy saving, environmental protection, simple structure, no noise, stable and reliable operation, etc., the adsorption refrigeration system is not yet available. It overcomes the inherent shortcomings of low COP value, relatively small cooling capacity, and large volume. In addition, the continuity, stability, and controllability of its cold output also make it unable to meet the cooling requirements of air conditioners. requirements

From the above analysis, it can be seen that these two refrigeration methods have problems such as large volume and low refrigeration efficiency, which affect their application in the field of automotive air conditioning

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