Refrigeration system for automobile air conditioner and control method of refrigeration system

Abstract

A refrigeration system for an automobile air conditioner comprises a direct-current power supply, an electronic controller, a mode select switch, a plurality of semiconductor refrigeration pieces, a voltage-regulating control PWM (pulse-width modulation) device, a refrigeration piece select device, an in-automobile temperature sensor, a chair pressure sensor, an air-blast fan, a radiator fan and a temperature-regulating button, wherein the input end of the electronic controller is connected with the mode select switch, the in-automobile temperature sensor, the chair pressure sensor and the temperature-regulating button; the output end of the electronic controller is connected with the refrigeration piece select device; and the electronic controller can drive one or more semiconductor refrigeration pieces to work for refrigeration selectively according to temperature values and chair pressure values detected by the in-automobile temperature sensor and the chair pressure sensor as well as the temperature values set by the temperature-regulating button.

Description

[0001] technical field [0002] The invention relates to an automobile air-conditioning refrigeration system, which belongs to the field of automobile air-conditioning. Background technique [0003] The automotive air-conditioning refrigeration system is a device that cools the air in the cabin. It can provide a comfortable riding environment for the passengers, reduce the fatigue intensity of the driver, and improve driving safety. The traditional automotive air-conditioning refrigeration system consists of a compressor, a condenser, a liquid storage drier, an expansion valve, an evaporator, and a blower, etc. It uses the evaporation and heat absorption of the refrigerant to reduce the temperature of the air around the evaporator. The currently used refrigerants are R-12 (difluorodichloromethane) and R-134a (1,1,1,2-tetrafluoroethane). These refrigerants are all low-pressure liquefied gases. , improper management and use, prone to accidents. In the presence of Freon vapor...

AI Technical Summary

Problems solved by technology

If the refrigerant leaks, not only the cooling effect in the car cannot be achieved, but it will also cause great harm to the environment and the human body.

Moreover, the current automotive air-conditioning system takes up a lot of space in the car, which is not conducive to the development of lightweight cars in the future.

[0004] In addition, in the prior art, an automobile air-conditioning refrigeration system using semiconductor refrigeration elements as the automobile air-conditioning refrigeration element has been developed. Compared with the traditional refrigeration system, this refrigeration system has indeed made great progress in terms of environmental friendliness. , but due to the characteristics of the refrigeration components, there are still some room for improvement in the efficiency and energy consumption of the refrigeration system

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