Refrigeration device

Abstract

The invention discloses a refrigeration device. The refrigeration system has an energy saving operation mode performing: a first action in which a compressor (11) and an internal fan (16) are driven while the cooling capacity of an evaporator (14) is regulated; a second action in which, when the blow-off-side air temperature in a cold storage is kept at a set value in the first action, the coolingcapacity of the evaporator (14) is increased to lower the blow-off-side air temperature to a lower limit temperature of a desired temperature range containing the set value and the compressor (11) and the internal fan (16) are then stopped; and a third action in which, when the blow-off-side air temperature after the second action rises to an upper limit temperature of the desired temperature range, the first action is restarted. Furthermore, the energy saving operation mode is configured so that when the suction-side air temperature in the cold storage after the second action rises to a limit value, the internal fan (16) is activated at a lower air flow rate than in the first action.

Description

technical field [0001] The present invention relates to a refrigeration device provided with a cooling heat exchanger for cooling the inside of a refrigerator, and more particularly to an energy-saving operation method. Background technique [0002] Conventionally, freezers for cooling the interior of refrigerators, freezers, and the like have been known. [0003] For example, Patent Document 1 discloses a refrigeration device that cools the interior of containers used for marine transportation and the like. This refrigeration system includes a refrigerant circuit in which a compressor, a condenser, an expansion valve, and a cooling heat exchanger (evaporator) are connected. In the refrigerant circuit of this refrigerating apparatus, a refrigerant is circulated to perform a vapor compression refrigeration cycle. As a result, the refrigerant flowing through the cooling heat exchanger absorbs heat from the interior air and evaporates, thereby cooling the interior air. In th...

AI Technical Summary

Problems solved by technology

However, in the conventional refrigerating apparatus, even in the above-mentioned state, the compressor etc. are always operated, which consumes energy in vain.

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