A multi-stage thermoelectric cooler parameter vacuum testing device

Abstract

The invention discloses a multistage thermoelectric cooler parameter vacuum testing device which comprises a vacuum cavity, a vacuum pump, a water-cooling head, a temperature control cooling water circulation device, a heating resistor module, a cold-end temperature measurement resistor, a hot-end temperature measurement resistor, a direct current power source, and a data processing and displaying module. A vacuum pumping valve and an air vent valve are arranged on the vacuum cavity. The vacuum cavity is sealed with the water-cooling head through a vacuum rubber ring and connecting screws. A hot end of a thermoelectric cooler achieves heat dissipation and temperature control through the water-cooling head and the temperature control cooling water circulation device. The data processing and displaying module is used for carrying out real-time control, data processing and result displaying on appliances in the device. Through adoption of the multistage thermoelectric cooler parameter vacuum testing device, the current-voltage response relation and the current-refrigerating capacity relation of the multistage thermoelectric cooler, the refrigerating efficiency of the multistage thermoelectric cooler under different heat dissipation conditions and other parameters can be obtained. The multistage thermoelectric cooler parameter vacuum testing device is simple in structure, convenient to operate, high in measuring accuracy, and capable of effectively preventing a cold end of the thermoelectric cooler from dewing in the testing process of large temperature difference.

Description

technical field [0001] The invention relates to a device for testing the parameters of a thermoelectric refrigerator, in particular to a vacuum testing device required for the large temperature difference test of a multistage thermoelectric refrigerator. Background technique [0002] Thermoelectric coolers have been widely used in military, medical, aerospace and other fields due to the advantages of small size, no noise, adjustable temperature, and precise temperature control. According to the maximum cooling temperature difference, thermoelectric coolers can be divided into one-stage, two-stage or even multi-stage. At present, the cooling capacity of single-stage thermoelectric coolers is determined mainly through simple parameter measurement and theoretical calculations, while multi-stage thermoelectric coolers often have large deviations in calculation results due to the many parameters involved and complex calculations. At present, there are few reports on the thermoel...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a device for testing the parameters of a multi-stage thermoelectric cooler, which solves the problems that the performance parameters of the multi-stage thermoelectric cooler are difficult to determine during the use and acceptance process, and the direct test is easy to condense and the result is inaccurate.

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