| 摘要 |
PURPOSE:To prevent cooling cycle from being overloaded by decelerating an air blower and opening an air mix door at the heater mode side when the intra-car temperature rises higher than at full cooling time. CONSTITUTION:When a command signal which raises the intra-car temperature higher than at full cooler mode is output, a drive circuit 13 is operated and the number of revolutions of an air blower 1 decreases. By decreasing the number of revolutions of this air blower 1, a temperature rise effect is obtained to some extent based on a load. In this stage, since an air mix door 4 is not opened, the cooling air cooled by a cooler cannot be heated by a heater and the load of the cooling cycle of the cooler can be reduced. Then a transducer 11 is actuated and the air mix door 4 is slowly opened. Part of the cooling air is heated by the heater and the intra-car temperature is raised. |
