direct cooling refrigerator

Abstract

The invention provides a direct cooling refrigerator comprising a refrigerating chamber evaporator, a freezing chamber evaporator, one or more condensers, a compressor, a compensating heater and a control circuit, wherein the compensating heater is used for heating the refrigerating chamber evaporator and the control circuit is used for controlling the compressor and starting the compensating heater so as to heat the refrigerating chamber evaporator when the compressor starts or the fast refrigeration is carried out by the direct cooling refrigerator. In the embodiment of the invention, the low temperature compensation for the compressor can be realized through the compensating heater; the refrigerating chamber evaporator can be heated through the compensating heater when the fast refrigeration is carried out by the direct cooling refrigerator; and therefore, the temperature of a refrigerating chamber is stabilized.

Description

technical field [0001] The invention relates to the technical field of household electrical appliances, in particular to a direct cooling refrigerator. Background technique [0002] At present, refrigerators are generally divided into two refrigeration methods: direct cooling and indirect cooling. Among them, the direct cooling refrigerator uses the natural convection of air in the refrigerator to cool food. Because the evaporator is often installed on the upper part of the refrigerator, the air around the evaporator needs to exchange heat with the evaporator, the air transfers heat to the evaporator, and the evaporator transfers cold energy to the air. After the air absorbs the cold, the temperature drops, the density increases, and it moves downward. The air in the lower part of the refrigerator needs to exchange heat with the cooled food, and the food transfers heat to the air. After the air gets the heat, the temperature rises, the density decreases, and it rises aroun...

AI Technical Summary

Problems solved by technology

[0003] However, at present, ordinary direct cooling mechanical refrigerators have no quick-freezing function, and only computer refrigerators have quick-freezing function. The freezing capacity of ordinary direct-cooling mechanical refrigerators is very small, only satisfying 4.5kg / 100L

However, the cost of computer refrigerators is relatively high, and the selling price is also very high, so it cannot meet the needs of low-end consumers for low-cost refrigerators with both quick-freezing function and large freezing capacity

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