| 摘要 |
PURPOSE:To reduce the resistance of ventilation during maximum air-blasting, and to lower noise, by projecting a resistor for controlling the drive voltage of a blower in order to adjust the amount of air blasting, into a blasting air passage in accordance with the control operation of the voltage to cool the resistor. CONSTITUTION:In an air-conditioning device, a blower 3, an evaporator 4a and a heater core 5 are disposed, in the mentioned order from the upstream side, in a ventilation passage 1 having inside and outside suction ports 26, 27 at one end thereof. In the above-mentioned arrangement, there is arranged a rotatable stay 15 formed with flat sections 15a, 15b in L-like shapes which may be selectively made in close contact with an opening 28a formed in a part of scroll casing 28 for storing the blower 3. A resistor 8 for controlling the drive voltage of the blower 3 is attached on the flat section 15a of this stay 15. Further, upon setting of the maximum air-blasting amount, a solenoid valve 19 is changed over to operate a drive mechanism 9 including a diaphragm device 18 so that the stay 15 is reversed to project the resistor 18 outward. |
