Micro thermoelectric refrigerator with high safety performance

Abstract

The invention discloses a micro thermoelectric refrigerator with a high safety performance. The micro thermoelectric refrigerator comprises a semiconductor refrigeration sheet, a heat-isolating sheet,a heat-isolating spacer, a cold conducting sheet, screws and a cooling device, wherein the heat end of the semiconductor refrigeration sheet is spliced and fixed to the centre of one side of the heat-isolating sheet through heat conducting silicone grease; the heat-isolating spacer is spliced to the same side, with the semiconductor refrigeration sheet, of the heat-isolating sheet and the semiconductor refrigeration sheet is located on the inner side of the heat-isolating spacer; the cold end of the semiconductor refrigeration sheet is spliced and fixed to the centre of one side of the cold conducting sheet through heat conducting silicone grease; one side, far from the heat-isolating sheet, of the heat-isolating spacer is in contact with the cold conducting sheet; two ends of the cold conducting sheet are fixedly connected to the heat-isolating sheet through the screws; and the cooling device is arranged on one side, far from the cold conducting sheet, of the heat-isolating sheet. The micro thermoelectric refrigerator can reduce the temperature of the fins of the heat-isolating sheet quickly, so that normal use of the semiconductor refrigeration sheet is guaranteed and the service life of the thermoelectric refrigerator is prolonged.

Description

technical field [0001] The invention relates to the technical field, in particular to a miniature thermoelectric refrigerator with high safety performance. Background technique [0002] Thermoelectric refrigeration, also known as thermoelectric refrigeration, or semiconductor refrigeration, is a refrigeration method that utilizes the thermoelectric effect (ie, the Pamir effect). Semiconductor materials with high thermoelectric potential can be successfully used to make small thermoelectric coolers. Thermocouple cooling element composed of P-type semiconductor and P-type semiconductor. The N-type semiconductor and the P-type semiconductor are connected into a loop with copper plates and copper wires, and the copper plates and copper wires only play a conductive role. At this point, one junction becomes hot and the other junction becomes cold. If the direction of the current is reversed, the heating and cooling effects at the junction are reciprocal. The cooling capacity o...

AI Technical Summary

Problems solved by technology

[0003] In the existing miniature thermoelectric coolers, most of the hot ends of the semiconductors use fans to cool down, and the cooling effect is poor, which seriously affects the service life of the miniature thermoelectric coolers

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