Refrigerating device and refrigerator

A refrigerating device provided with a refrigeration cycle including:

• a compressor;
• a radiator connected to a discharge side of the compressor;
• first pressure reducing means connected to an outlet side of the radiator;
• a gas-liquid separator connected to an outlet side of the first pressure reducing means;
• first heat absorbing means through which a liquid refrigerant from the gas-liquid separator flows and which includes second pressure reducing means and a first heat sink;
• and second heat absorbing means disposed in parallel with the first heat absorbing means and including third pressure reducing means and a second heat sink,
• refrigerant pipes of the first and second heat absorbing means on the outlet side being combined and connected to a suction side of the compressor,
• wherein the second heat absorbing means functions in a temperature zone lower than that of the first heat absorbing means,
• a first cooling operation to operate the first heat absorbing means and a second cooling operation to operate the second heat absorbing means are switchable to each other, the refrigerating device permitting circulation of the refrigerant into the first heat absorbing means, stopping circulation of the refrigerant into the second heat absorbing means, and operating the compressor at a frequency higher than that of the first or second cooling operation before starting the first cooling operation.

A refrigerating device provided with a refrigeration cycle including:

• a compressor;
• a radiator connected to a discharge side of the compressor;
• first pressure reducing means connected to an outlet side of the radiator;
• a gas-liquid separator connected to an outlet side of the first pressure reducing means;
• first heat absorbing means through which a liquid refrigerant from the gas-liquid separator flows and which includes second pressure reducing means and a first heat sink;
• and second heat absorbing means disposed in parallel with the first heat absorbing means and including third pressure reducing means and a second heat sink,
• refrigerant pipes of the first and second heat absorbing means on the outlet side being combined and connected to a suction side of the compressor,
• wherein the second heat absorbing means functions in a temperature zone lower than that of the first heat absorbing means,
• a first cooling operation to operate the first heat absorbing means and a second cooling operation to operate the second heat absorbing means are switchable to each other,
• the refrigerating device performing a refrigerant recovering operation of permitting circulation of the refrigerant into the first heat absorbing means, stopping circulation of the refrigerant into the second heat absorbing means, operating the compressor at a frequency higher than that of the first or second cooling operation, recovering the refrigerant stored in the second heat sink, and sending the refrigerant to the gas-liquid separator to store the refrigerant before starting the first cooling operation.