| 摘要 |
PURPOSE:To reduce electric power to be consumed by a motor fan for condenser use and a noise to be produced thereby in the case where cooling capacity is not so much required as outside temperature is low, by making a revolving speed of the motor fan so as to be varied at the position of an operating level of an air mix device. CONSTITUTION:When an operating lever 8 is situated in a range from 8a to 8b, if an air conditioner switch 3 is turned to ON, a relay 5 is closed, and a switch 9 interlocking with the operating lever 8 is also closed so that an earth circuit is not passed through an electric resistance 6 and goes down to earth, and a motor fan 2 comes to rotate at high speed. Next, when the operating lever 8 is situated in a range from 8a to 8c, in case the air conditioner switch 3 is turned to ON, the relay 5 is closed but the switch 9 is opened so that the earth circuit of the motor fan 2 goes down to the earth via the electric resistance 6. Therefore, the motor fan 2 rotates at low speed in consequence. |
