REFRIGERATION CYCLE APPARATUS

摘要

A refrigeration cycle apparatus includes a compressor, a condenser, a first subcooling device that subcools a refrigerant by exchanging heat with the air, a second subcooling device that performs a heat exchange between refrigerant streams that have been branched by a branch pipe, thereby subcooling one of the refrigerant streams, a flow control device that adjusts a flow rate of the second stream of the refrigerant and passes this refrigerant through the second subcooling device, a bypass path that allows the refrigerant passing through the flow control device and the second subcooling device to flow therethrough, an expansion valve, an evaporator, and a controller configured to control an amount of heat exchanged in the first subcooling device and an amount of heat exchanged in the second subcooling device based on a temperature of the air.

主权项

1. A refrigeration cycle apparatus comprising:
a refrigerant circuit formed by connecting, by refrigerant pipes, a compressor, a condenser, a first subcooling device, a second subcooling device, flow controller, a bypass pipe, pressure reducing device, and an evaporator,
the compressor configured to compress refrigerant;the condenser configured to condense the refrigerant;the first subcooling device configured to cause heat exchange between the refrigerant and air and to subcool the refrigerant;the second subcooling device configured to cause heat exchange between first and second streams of the refrigerant obtained by branching by a branch pipe for causing the refrigerant to branch off and to subcool the first stream of the refrigerant relating to the branching;the flow controller configured to adjust a flow rate of the second stream of the refrigerant relating to the branching and to cause the second stream of the refrigerant to flow through the second subcooling device;the bypass pipe that allows the refrigerant passing through the flow controller and the second subcooling device to flow therethrough;the pressure reducing device configured to reduce pressure of the refrigerant;the evaporator configured to cause the refrigerant to evaporate; and a controller configured to control an amount of heat exchanged in the first subcooling device and an amount of heat exchanged in the second subcooling device based on a temperature of the air, wherein the controller is configured to perform control such that, the lower the temperature of the air, the larger the amount of heat exchanged in the first subcooling device as compared to the amount of heat exchanged in the second subcooling device in an operation after activation of the refrigeration cycle apparatus.