JPS5587613A - Air conditioning system for automobile - Google Patents

Abstract

PURPOSE:To comfortably control quantity and velocity of wind by a mechanism wherein an auxiliary fan is disposed in one duct of left-and-right ducts and an auxiliary air introducing port, which can be shut, is mounted at the dividing box side from the auxiliary fan. CONSTITUTION:When an operation lever 33 is located at a position W, both a main motor 5 and an auxiliary motor 29 revolve at high speed because the both motors are energized without resistance while an auxiliary air damper 30 also opens an auxiliary air introducing port 28 fully, thus resulting in the maximum wind velocity and quantity of wind of each blow-off port 16, 25 and 41. When the operation lever 33 is located at a position X, the main motor 5 rotates at intermediate speed because resistance R1 is put between the motor 5 and power source 39 the auxiliary motor 29 still maintains revolution at high speed, and the auxiliary damper 30 is half opened. When the lever is located at a position Y, the both motors 5, 29 run at low speed, and the auxiliary damper 30 closes the auxiliary air introducing port 28, thus resulting in normal air cooling. According to such constitution, the control of the wind velocity and the quantity of winds can be improved without enlarging the capacity of a main fan 2.