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Thermopile characteristic property contravariant method in controlling thermoelectric refrigeration

A technology of thermoelectric cooling and thermopile, which is applied in the directions of refrigerators, refrigeration and liquefaction, and machine operation modes, etc., can solve the problems of low efficiency and high energy consumption, and achieves reduced energy consumption, improved energy efficiency ratio, and full-load operation. effect of time reduction

Inactive Publication Date: 2005-02-09
张琳 +1
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] 1. The energy consumption is large, and the conversion efficiency of electric energy into cold energy (heat energy) is low

Method used

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  • Thermopile characteristic property contravariant method in controlling thermoelectric refrigeration
  • Thermopile characteristic property contravariant method in controlling thermoelectric refrigeration
  • Thermopile characteristic property contravariant method in controlling thermoelectric refrigeration

Examples

Experimental program
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Embodiment Construction

[0024] In the figure, 1 is the direction of the heat source, 2 is the condenser, 3 is the thermopile, 4 is the evaporator, 5 is the power supply, and 6 is the switch.

[0025] The method used in this embodiment to control the inversion of thermopile characteristics in thermoelectric cooling is to simultaneously provide a critical operating voltage slightly greater than the zero operating point for the thermopile after the specific environmental range reaches the preset temperature standard and shut down, so that The thermopile continues to be in a micro-working state, and the operating voltage at its critical point should generally be 25 to 35% of the rated operating voltage of the thermopile.

[0026] There are many ways to provide a critical operating voltage slightly greater than the zero operating point for the critical point of the thermopile, such as: switching power supply to adjust the operating frequency of the switching tube, changing the duty cycle; SCR control to ch...

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Abstract

The present invention is the method of controlling the inversion of thermopile characteristic in thermoelectric refrigeration. The present invention features that after certain temperature is reached and the thermoelectric refrigerator stops, one critical work voltage, commonly being 25-36 % its rated work voltage, is applied for the thermopile maintaining its micro work state without inversion between the heat absorbing end and the heat releasing end. The said method makes the thermoelectric refrigerator always in normal operation state, and may be used widely in various thermoelectric refrigerator products.

Description

technical field [0001] The invention relates to the technical field of semiconductor refrigeration, in particular to a method for controlling the inversion of thermopile characteristics in thermoelectric refrigeration. Background technique [0002] Thermoelectric cooling is also known as semiconductor cooling (Semi-Conductor Cooling Device), thermoelectric cooler, electronic cooling, etc. In 1834, the French scientist Peltier discovered the thermoelectric inverse effect of metals. That is, there is a pair of thermocouples composed of two different metals. When the current passes through the thermocouples, due to the different directions of the direct current flow, heat absorption or heat dissipation will occur at the junction of the thermocouples. This physical phenomenon is called Percolate. Eltier effect. [0003] The semiconductor refrigerator is based on the characteristics of the thermoelectric effect technology. It uses a special semiconducto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B21/02
Inventor 李烨张元张琳
Owner 张琳
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