Temperature control circuit, refrigeration device and refrigerator

Abstract

The invention discloses a temperature control circuit, which comprises a non-isolated power module, a control processing module, a temperature acquisition module, a relay, a relay driving unit and a function key module, wherein the first end of a switch of the relay is used for being connected with an AC live wire; the second end of the switch of the relay is used for being connected with a compressor; the relay driving unit comprises a refrigeration control signal input end, a power supply end and a refrigeration driving end; the power input end of a relay coil is connected with the power supply end; the current output end of the relay coil is connected with the refrigeration driving end; the non-isolated power module includes a first power output end and a second power output end; the first power output end, the temperature acquisition module, the function key module and the refrigeration control signal input end are all connected with the control processing module; and the power supply end is connected with the second power output end. Correspondingly, the invention also discloses a refrigeration device and a refrigerator. The accuracy of temperature control can be improved, thetemperature fluctuation range in the refrigerator is reduced, the structure is simple, and the cost is low.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a temperature control circuit, a refrigeration device and a refrigerator. Background technique [0002] Along with the raising of people's quality of life, refrigerator has become requisite household appliance in people's daily life. The traditional mechanical refrigerator uses a mechanical thermostat to control and adjust the temperature of the refrigerator. Its technical content is low, and the temperature control is not precise enough, and the temperature is controlled within a large range; the mechanical refrigerator needs the temperature to rise to a relatively large difference. Afterwards, the controller can start the compressor again, and the temperature fluctuation is relatively large, which has adverse effects on food storage and energy consumption. In addition, due to the structural reasons of the mechanical thermostat, the refrigerator also has disadvantages such ...

AI Technical Summary

Problems solved by technology

The traditional mechanical refrigerator uses a mechanical thermostat to control and adjust the temperature of the refrigerator. Its technical content is low, and the temperature control is not precise enough, and the temperature is controlled within a large range; the mechanical refrigerator needs the temperature to rise to a relatively large difference. Afterwards, the controller can start the compressor again, and the temperature fluctuation is relatively large, which has adverse effects on food storage and energy consumption

In addition, due to the structural reasons of the mechanical thermostat, the refrigerator still has disadvantages such as temperature drift, large error, non-stop and non-start.

Although the computer refrigerators on the market overcome the above shortcomings and have more functions, the corresponding circuit structure is more complicated and the cost is higher

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