| 摘要 |
PURPOSE:To prevent the insufficiency in the amount of coolant by providing two main and sub suction ports in a compressor and connecting a coolant return path that passes through a third heat exchanger to a main suction port and a coolant return path that passes through a first exchanger to a sub suction port. CONSTITUTION:At heating cycle, the main suction port 47 of a compressor 1 is connected to the exit section of a second heat exchanger 5 that is the final component of a coolant circulation system. In addition, the sub suction port 46 of the compressor 1 is connected to the exit section of a capacitor as a first heat exchanger 2 that can anticipate several atmospheric heat absorption functions, interposed in a bypass coolant return path at this cycle. Consequently, even if a leak is generated in a check valve interposed in a coolant circulation system and the coolant is collected gradually in a condenser 2, the coolant is sucked in the sub suction port 46. As a result, there is no insufficiency in the amount of coolant that flows in the coolant circulation system. |
