Refrigeration cycle device

A refrigeration cycle device comprising:

• a refrigerant circuit including a compressor, a heat-source-side heat exchanger, a first expansion device, and a load-side heat exchanger, refrigerant cycling through the compressor, the heat-source-side heat exchanger, the first expansion device, and the load-side heat exchanger;
• a plurality of controllers configured to control the refrigerant circuit;
• a bypass pipe branching from a high pressure pipe on a discharge side of the compressor and connected to a low pressure pipe on a suction side of the compressor;
• a second expansion device provided to the bypass pipe, and configured to adjust a flow rate of the refrigerant flowing through the bypass pipe;
• and
• a plurality of refrigerant coolers provided to the bypass pipe, and configured to cool the plurality of controllers by using the refrigerant the flow rate of which is adjusted by the second expansion device,
• each of the plurality of refrigerant coolers including a refrigerant cooling pipe and a plate, the refrigerant cooling pipe forming the bypass pipe, the plate being joined between the refrigerant cooling pipe and a controller of the plurality of controllers,
• the refrigeration cycle device further comprising:
• a first opening degree control device configured to perform a control of increasing an opening degree of the second expansion device in a case where a condition is satisfied in which, of temperatures of the plurality of controllers, a highest temperature is equal to or above a predetermined temperature and a lowest temperature is equal to or above a predetermined temperature;
• an output suppressing unit configured to perform a control of suppressing an output from the controller having the highest temperature in a case where the condition fails to be satisfied in which, of the temperatures of the plurality of controllers, the highest temperature is equal to or above the predetermined temperature and the lowest temperature is equal to or above the predetermined temperature, and a condition is satisfied in which, of the temperatures of the plurality of controllers, the highest temperature is equal to or above the predetermined temperature;
• and
• an output complementing unit configured to complement an output by a controller other than the controller having the highest temperature of the plurality of controllers in a case where the output from the controller having the highest temperature is suppressed by the output suppressing unit.

A refrigeration cycle device comprising:

• a refrigerant circuit including a compressor, a heat-source-side heat exchanger, a first expansion device, and a load-side heat exchanger, refrigerant cycling through the compressor, the heat-source-side heat exchanger, the first expansion device, and the load-side heat exchanger;
• a plurality of controllers configured to control the refrigerant circuit;
• a bypass pipe branching from a high pressure pipe on a discharge side of the compressor and connected to a low pressure pipe on a suction side of the compressor;
• a second expansion device provided to the bypass pipe, and configured to adjust a flow rate of the refrigerant flowing through the bypass pipe;
• and
• a plurality of refrigerant coolers provided to the bypass pipe, and configured to cool the plurality of controllers by using the refrigerant the flow rate of which is adjusted by the second expansion device,
• each of the plurality of refrigerant coolers including a refrigerant cooling pipe and a plate, the refrigerant cooling pipe forming the bypass pipe, the plate being joined between the refrigerant cooling pipe and a controller of the plurality of controllers,
• the refrigeration cycle device further comprising:
• a first opening degree control device configured to perform a control of increasing an opening degree of the second expansion device in a case where a condition is satisfied in which, of temperatures of the plurality of controllers, a highest temperature is equal to or above a predetermined temperature and a lowest temperature is equal to or above a predetermined temperature;
• a second opening degree control device configured to perform a control of reducing the opening degree of the second expansion device in a case where a condition is satisfied in which, of the temperatures of the plurality of controllers, the highest temperature is below the predetermined temperature and the lowest temperature is below the predetermined temperature;
• and
• a third opening degree control device configured to perform a control of reducing the opening degree of the second expansion device such that an average of the temperatures of the plurality of controllers reaches a target temperature in a case where the condition fails to be satisfied in which, of the temperatures of the plurality of controllers, the highest temperature is below the predetermined temperature and the lowest temperature is below the predetermined temperature, and a condition is satisfied in which the average of the temperatures of the plurality of controllers is below the target temperature.