Small-size refrigerating and heating device for automobile

Abstract

The invention provides a small-size refrigerating and heating device for an automobile and relates to a refrigerating and heating device. The small-size refrigerating and heating device for the automobile comprises a refrigerating box, a heating box, a semiconductor refrigerating chip, a heat exchanger, temperature sensors, a microprocessor, a PID controller, and an adjustable power supply module. The refrigerating box and the heating box are connected with each other. The semiconductor refrigerating chip is arranged between the refrigerating box and the heating box. The heat exchanger is connected between an air supply opening and a return air opening of the heating box. The heat exchanger is respectively connected with the two ends of an automobile engine water heating system. The temperature sensors are arranged in the refrigerating box and the heating box respectively and connected with the input end of the microprocessor. The output end of the microprocessor is connected with the input end of the PID controller. The output end of the PID controller is connected with the adjustable power supply module. The output end of the adjustable power supply module is connected with the semiconductor refrigerating chip. Heat generated by an engine mainly serves as a heat source of the heating box. The refrigerating box achieves refrigeration through the semiconductor refrigerating chip. The refrigerating efficiency of the refrigerating box is improved through the microprocessor and the PID controller. Therefore, the energy utilization rate is high.

Description

technical field [0001] The invention relates to a cooling and heating device, in particular to a small cooling and heating device for vehicles. Background technique [0002] There are already mature application products for vehicle-mounted refrigeration and heating devices. From the perspective of implementation technology, the implementation principles of vehicle refrigeration and heating devices are mainly divided into: vehicle refrigerators based on traditional compressors, vehicle refrigerators based on semiconductor refrigeration and heating principles, and vehicle incubators realized by thermal insulation materials. Among them, the refrigerating refrigerator based on the traditional compressor principle is relatively large in volume, and its working principle is to use the compressor to realize the cooling purpose, which is expensive and only has a cooling function. Refrigerators based on semiconductor refrigeration and heating principles are currently the main coolin...

AI Technical Summary

Problems solved by technology

However, the current traditional small-scale refrigeration and heating devices for vehicles use the principle of thermoelectricity to achieve heating, and do not make full use of the large amount of heat generated by the engine itself during the driving process of the car, and most of this heat is released as waste heat.

If other car heating devices in the car are used, the energy load of the car will be increased virtually, and the heat energy of the car itself will not be fully utilized.

On the other hand, from the traditional semiconductor refrigeration device, once the semiconductor refrigeration device is started, the system is always in the working state, and the output power of the semiconductor refrigeration device will not be automatically adjusted according to the current temperature of the refrigeration box, resulting in energy loss during the refrigeration process. Waste is more obvious

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