Refrigerator

Abstract

There is disclosed a refrigerator in which a refrigerant circuit on a high-pressure side is operated in a supercritical state, and an object of the refrigerator is to improve a freezing capacity while securely preventing dew condensation at an opening edge by a condenser. In the refrigerator including the refrigerant circuit constituted of a compressor, the condenser, a throttle means and an evaporator; and a dew condensation preventive pipe constituting a part of the condenser and disposed along the opening edge of an insulation box member, the refrigerant circuit on the high-pressure side is operated in the supercritical state, and the dew condensation preventive pipe is positioned on an upstream side of a refrigerant downstream region of the condenser.

1 . A refrigerator comprising:
 a refrigerant circuit constituted of a compressor, a condenser, a throttle means and an evaporator and operated on a high-pressure side in a supercritical state; and   a dew condensation preventive pipe constituting a part of the condenser and disposed along an opening edge of an insulation box member,   the condenser including at least a first condenser and a second condenser,   the dew condensation preventive pipe being positioned between the first condenser and the second condenser.   
   
   
       2 . The refrigerator according to  claim 1 , further comprising:
 a bypass pipe connected in parallel with the dew condensation preventive pipe; and   a channel control unit which controls whether to pass a refrigerant through the dew condensation preventive pipe or the bypass pipe.   
   
   
       3 . The refrigerator according to  claim 1  or  2 , wherein carbon dioxide is used as the refrigerant of the refrigerant circuit.