Patent ID: 7770406

Claim:
A refrigerator having a freezing cycle, wherein: a high-pressure side discharge port of a two-stage compressor and a condenser are connected; said condenser and flow rate variable means of a cross valve type are connected; a refrigerating side exit of said flow rate variable means is connected to a medium pressure side suction port of said two-stage compressor via a refrigerating capillary tube and an evaporator for a refrigerating chamber; a freezing side exit of said flow rate variable means is connected to an evaporator for a freezing chamber via a freezing capillary tube; and said evaporator for said freezing chamber is connected to a low-pressure side suction port of said two-stage compressor via a low-pressure suction pipe; characterized in that said refrigerator further comprises control means, which: switches a simultaneous cooling mode for simultaneously supplying a refrigerant to said evaporator for said refrigerating chamber and said evaporator for said freezing chamber and a freezing mode for supplying said refrigerant only to said evaporator for said freezing chamber to each other by said flow rate variable means; and during said simultaneous cooling mode, adjusts a refrigerant flow rate in a direction of easy flow of said refrigerant in either of said refrigerating capillary tube and said freezing capillary tube by said flow rate variable means, and thereby performs a temperature difference control so as to make a difference between an entrance temperature of said evaporator in said direction of easy flow of said refrigerant and an exit temperature thereof equal to a preset temperature difference.