Multipoint temperature measuring device for thermoelectric refrigerating assembly

Abstract

The present invention relates to a multipoint temperature measuring device for a thermoelectric refrigerating assembly, comprising an outer shell, a locating plate, a boss-shaped temperature controlling platform and a support, wherein the locating plate, the boss-shaped temperature controlling platform and the support are fastened to the outer shell with fastening bolts respectively; a water jacket and a temperature controlling refrigerating assembly are arranged between the locating plate and the boss-shaped temperature controlling platform from bottom to top. The upper face of the water jacket clings to the hot face of the temperature controlling refrigerating assembly, and the cold face of the temperature controlling refrigerating assembly clings to the lower face of the temperature controlling platform. On the support is a pedestal moving up and down along a screw thread, the upper end of the pedestal is in the form of a screw and the lower end is a hollow body with screwed holes on the side surface, and a temperature measuring screw with a thermocouple in contact with the temperature controlling platform is positioned in the screw holes. Thermocouples in contact with the temperature controlling platform are arranged in the middle of the pedestal. By employing the temperature measuring screw and the pedestal moving along the thread up and down on the support, and the temperature measuring screw moving horizontally along the thread on the pedestal, simultaneous multipoint temperature measurements are realized and the galvanic couples with infirm welding spots are accurately identified and picked out, thus the irretrievable loss caused by the dysfunction of the thermoelectric refrigerating assembly because of the infirm welding spots of the galvanic couple can be effectively prevented.

Description

technical field [0001] The invention belongs to the technical field of a thermoelectric cooling component testing device, and in particular relates to a multi-point temperature testing device for a thermoelectric cooling component. Background technique [0002] The thermoelectric refrigeration component is a heat pump that uses the Seebeck effect. It is composed of a number of thermoelectric couples connected in series and thermally connected in parallel. It can be used for both cooling and heating. It is widely used in high-tech fields such as aviation and aerospace because of its advantages such as long life, no noise during operation, and precise temperature control when adjusting voltage or current. Under normal circumstances, under the premise that the temperature of the hot surface of the cooling component is constant, the temperature of the center of the cold surface of the cooling component and the four corners are the same. When the solder joints with galvanic coup...

AI Technical Summary

Problems solved by technology

At present, under the premise that the temperature of the hot surface of the cooling component is constant, the method of testing the temperature of the center and four corners of the cold surface of the thermoelectric cooling component is to use a thermometer to test different points separately. Because it is impossible to test all points at the same time, it cannot be accurately screened. Galvanic couples with weak solder joints may not be removed in time, resulting in irreparable losses due to failure of thermoelectric cooling components

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