Title:
CONTROL SYSTEM FOR VEHICLE HEAT PUMP TYPE AIR-CONDITIONING DEVICE
Document Type and Number:
Japanese Patent JPS61253212
Kind Code:
A
Abstract:
PURPOSE:To prevent the operability of a vehicle from lowering and to eliminate the necessity of a highly sensitive sensor, in a control system for a vehicle air-conditioning device utilizing engine cooling water, by controlling the endothermic amount of a water-coolant heat-exchanger in such a way that the amount of feed water and the temperature of feed water are increased and decreased. CONSTITUTION:When a heating and cooling mode change-over switch 16 is positioned at the heating mode side, a control device 15 compares a blow-out air setting temperature with the blow-out air temperature of a passenger's compartment heat-exchanger 5, detected by a temperature sensor 13. If the blow-out temperature is higher, the valve opening degree of a water valve 14 is decreased while if it is lower, the opening degree is increased. Meanwhile, a compressor 1a is energized irrespective of the blow- out temperature. Upon cooling the control device 15 turns on and off the compressor 1a in accordance with the temperature detected by the sensor 13. With this arrangement, during heating, variations in the blow-out temperature may be made to be less since the compressor is continuously driven irrespective of the temperature of the blow-out air, thereby it is possible to prevent the operability of the vehicle from deteriorating.
Inventors:
MIYAJIMA NORIYOSHI
KIMATA MITSURU
KIMATA MITSURU
Application Number:
JP9576185A
Publication Date:
November 11, 1986
Filing Date:
May 03, 1985
Export Citation:
Assignee:
NIPPON DENSO CO
International Classes:
B60H1/32; B60H1/00; B60H1/08; (IPC1-7): B60H1/32
Attorney, Agent or Firm:
Takashi Okabe