Device for measuring cooling capacity of thermoelectric refrigerating unit

Abstract

The invention discloses a device for measuring the cooling capacity of a thermoelectric refrigerating unit. The device comprises a thermal end thermostat (1), a direct-current power supply (2), a cold end thermostat (4), a data processing module (5), a thermal end temperature sensor (15), an environmental temperature sensor (16), a cold end temperature sensor (17) and a pressure sensor (18), wherein the thermal end thermostat (1) and the cold end thermostat (4) are heat exchange and temperature control assemblies of a thermal end and a cold end respectively; a thermoelectric refrigerating unit testing piece is arranged between the thermal end thermostat (1) and the cold end thermostat (4); and the data processing module (5) is used for carrying out real time and data processing on each piece of equipment in the device. In the measuring device, heat produced by the refrigerating unit is dynamically compensated by controlling heat exchange on the cold and thermal end faces of the thermoelectric refrigerating unit till the heat is stable and balanced, and the cooling capacity of the refrigerating unit is finally measured by compensating for and correcting leakage heat. Due to the adoption of the device, the problem of direct measurement of the cooling capacity of the thermoelectric refrigerating unit is solved effectively; and the device has a simple structure and high measuring accuracy, and is convenient to operate.

Description

technical field [0001] The invention relates to a cooling capacity measuring device, in particular to a cooling capacity measuring device of a thermoelectric refrigerator. Background technique [0002] A thermoelectric cooler is mainly composed of a hot plate at the hot end, a cold plate at the cold end, and semiconductor materials. Because thermoelectric refrigeration has low efficiency, small cooling capacity and few application occasions, the direct measurement of its cooling capacity becomes a bottleneck. At present, the determination of the cooling capacity of thermoelectric refrigerators is mainly calculated by simple parameter measurement and theoretical formula. Its composition includes profile radiator, cooling fan, DC power supply, hot end temperature sensor, cold end temperature sensor, ambient temperature sensor, current and voltage measuring instruments. The DC power supply supplies power to the thermoelectric cooler, and the profile radiator is screwed to the...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a thermoelectric refrigerator cooling capacity measuring device, which solves the problem that the thermoelectric cooler product cannot intuitively and quantitatively provide the cooling capacity of the refrigerator in the process of performance testing and acceptance.

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