Frostless refrigerator automatic control device

Abstract

The invention discloses a frostless cool house automatic control device, which comprises a cool house temperature sensor for measuring the temperature of the cool house, a frost temperature sensor formeasuring the temperature of frost on the surface of an evaporator of an air cooler, a cool house temperature secondary instrument for setting temperature bound of the cool house, a frost temperaturesecondary instrument for setting temperature bound of the frost, the air cooler arranged in the cool house, a refrigerator arranged outside of the cool house and a control circuit for controlling theoperation of the air cooler and the refrigerator. The control device utilizes the combination of the cool house temperature and the frost temperature to control corresponding refrigeration equipmentand make the refrigeration equipment operate high-efficiently without frost, and the temperature of the cool house is automatically maintained within the required temperature range. The control devicehas the advantages of delicate and simple structure of circuits, strong operability and low failure rate.

Description

technical field [0001] The invention relates to an automatic control device for a frost-free cold storage. Background technique [0002] The current manual control and automatic control of cold storage are difficult to ensure that the evaporator in the cold storage does not accumulate frost. In order to keep the evaporator in the cold storage at a scientific and reasonable evaporation temperature, external heating is generally used for defrosting. Although this method can reduce the reduction of refrigeration efficiency and liquid shock damage to the refrigerator caused by frost accumulation on the evaporator, the storage temperature fluctuates greatly and consumes a lot of energy. Some control circuits that use the cold storage control device to avoid frost accumulation on the evaporator are complex, use many components, and have a high failure rate, which also affects the normal operation of the cold storage. Contents of the invention [0003] In order to solve the prob...

AI Technical Summary

Problems solved by technology

[0002] The current manual control and automatic control of the cold storage are difficult to ensure that the evaporator in the cold storage does not run without frost. In order to keep the evaporator in the cold storage at a scientific and reasonable evaporation temperature, external heating is generally used for defrosting.

Although this method can reduce the reduction of refrigeration efficiency and liquid shock damage to the refrigerator caused by frost accumulation on the evaporator, the storage temperature fluctuates greatly and consumes a lot of energy.

Some control circuits that use the cold storage control device to avoid frost accumulation on the evaporator are complex, use many components, and have a high failure rate, which also affects the normal operation of the cold storage.

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