| 摘要 |
PROBLEM TO BE SOLVED: To obtain the advantage in cost, to reduce the weight of a vehicle and to save electric power by miniaturizing a compressor. SOLUTION: A refrigerating cycle 8 is formed by connecting a compressor 2, a condenser 3, a first expansion valve 4 capable of adjusting the throttle amount, a second expansion valve 5 capable of adjusting the throttle amount, and an evaporator 6 in this order by a refrigerant pipe 1. A refrigerant pipe 7a for connecting the first and second expansion valves 4, 5 to each other is arranged on at least either a drive motor 30 for driving an automobile or a motor driving unit 41 for the drive motor 30. The magnitude of load to be applied to the drive motor 30 is detected by a load detecting means 31. When load is increased, the throttle amount of the first expansion valve 4 is increased and the throttle amount of the second expansion valve 5 is decreased by a throttle amount control means 60. When load is decreased, the throttle amount of the first expansion valve 4 is decreased and the throttle amount of the second expansion valve 5 is increased.
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