Semiconductor refrigeration plate drive circuit, temperature control device and refrigerator

Abstract

The invention provides a semiconductor refrigeration plate drive circuit, which comprises a first switch, a second switch, a first triode, a second triode, a third triode, a fourth triode and a fifth triode, wherein on and off of the first triode, the second triode and the third triode are controlled by the first switch; the on and off of the fourth triode and the fifth triode are controlled by the first triode; a collector electrode of the second triode is connected with an anode of the semiconductor refrigeration plate; the collector electrode of the fourth triode is connected with cathode of the semiconductor refrigeration plate; after the first switch is turned on and the second switch is turned off, the collector electrode of the second triode provides voltage to the anode of the semiconductor refrigeration plate, and after the first switch and the second switch are turned off, the collector electrode of the fourth triode provides the voltage to the cathode of the semiconductor refrigeration plate. The semiconductor refrigeration plate drive circuit provided by the embodiment of the invention has a two-way control function for inputting current to two poles of the refrigeration plate, thus the refrigeration plate has dual functions of refrigerating and heating. The invention also provides a temperature control device and a refrigerator.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, and particularly designs a semi-conductor refrigeration chip driving circuit for a refrigerator, a temperature control device with the semi-conductor refrigeration chip driving circuit, and a refrigerator with the temperature control device. Background technique [0002] At present, the refrigeration of refrigerators generally adopts the way of evaporator refrigeration, and the temperature adjustment of evaporator refrigeration is mainly realized by adjusting the speed of the compressor. [0003] However, the above-mentioned method is not only slow in response to temperature adjustment, but also inaccurate in temperature adjustment. And when the temperature is too low, such as when the set temperature is higher than the actual temperature, the temperature rise cannot be adjusted, which affects the performance of the refrigerator. Contents of the invention [0004] The present i...

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Problems solved by technology

[0003] However, the above-mentioned method not only has a slow temperature adjustment response speed, but also has imprecise temperature adjustment.

And when the temperatu

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