Freezer-refrigerator and cooling storage unit

Abstract

A freezer-refrigerator comprising: a refrigeration compartment (2) for refrigerating and storing an object to be stored; a freezing compartment (4) for freezing and storing an object to be stored; a first compressor (11) for operating a first refrigeration cycle (10) in which a first refrigerant flows; a first heat dissipater (12) provided to a high-temperature section of the first refrigeration cycle (10); a first evaporator (14) provided to a low-temperature section of the first refrigeration cycle (10); a second compressor (21) for operating a second refrigeration cycle (20) in which a second refrigerant flows; a second evaporator (24) provided to a low-temperature section of the second refrigeration cycle (20); and an intermediate heat exchanger (31) for performing heat exchange between the low-temperature section of the first refrigeration cycle (10) and a high-temperature section of the second refrigeration cycle (20). The first evaporator (14) cools the refrigeration compartment (2), and the second evaporator (24) cools the freezing compartment (4).

Description

technical field [0001] The present invention relates to a freezer-refrigerator having first and second evaporators for cooling a refrigerator compartment and a freezer compartment, respectively. Furthermore, the present invention relates to a cooling store having first and second cooling chambers with different temperatures. Background technique [0002] Patent Documents 1 and 2 disclose conventional freezers and refrigerators. The compressor for a freezer-refrigerator disclosed in Patent Document 1 flows a refrigerant to operate a refrigeration cycle system, and first and second evaporators are arranged in parallel in a low-temperature portion of the refrigeration cycle system. The first evaporator is arranged behind the freezing compartment. By driving the blower, cold air generated by heat exchange with the first evaporator is circulated in the freezing chamber and the refrigerating chamber, thereby cooling the freezing chamber and the refrigerating chamber. The second...

AI Technical Summary

Problems solved by technology

Therefore, similar to the above, there is a problem that the temperature of the evaporator is significantly lower than the indoor temperature of the refrigerator, and the power consumption of the freezer and refrigerator is large.

However, when the radiator placed in the high-temperature part of the refrigeration cycle system is defrosting, it is placed in the low-temperature part, and there is a problem of condensation on the radiator and the back panel.

[0027] In addition, according to the freezer-refrigerator disclosed in the above-mentioned Patent Document 7, since the refrigerant alternately flows in the first and second evaporators, the refrigerator compartment and the freezer compartment cannot be cooled at the same time.

Therefore, there is a problem that sufficient cooling capacity cannot be obtained for both the refrigerator compartment and the freezer compartment at the time of a high load just after storage is loaded.

Especially since the refrigerator room is radiantly cooled, it takes time to cool down, and the freezer room becomes insufficiently cooled when the refrigerator room is under high load.

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