Title:
VEHICLE AIR-CONDITIONING DEVICE
Document Type and Number:
Japanese Patent JPS61261121
Kind Code:
A
Abstract:
PURPOSE:To enhance the comfortability of a vehicle, by providing such an air-conditioning device for passenger's vehicles that the pressure of coolant in an evaporator disposed in a ventilating duct is controlled to obtain a blow-out air humidity corresponding to a predetermined passenger's compartment. CONSTITUTION:A control device 70 receives a set temperature 81, a set humidity 82, a passenger's compartment humidity 71, a passenger's compartment temperature 73, an outside temperature, a solar radiation amount, etc., and computes a desired blow-out humidity and a desired humidity. The dew point of air is calculated from the above-mentioned desired blow-out humidity, and the dew point is compared with the desired humidity. When the dew point is below the desired blow-out temperature, there is obtain a coolant evaporation pressure in an evaporator 32 such that air having passed through the evaporator 32 may have the due point, and gas feed and discharge valves 52, 54 control the pressure 75in a gas chamber 50 in a pressure control device 46. With this arrangement, it is possible to maintain the humidity in the passenger's compartment irrespective the seasons.
Inventors:
EGAWA YUKIO
Application Number:
JP10108385A
Publication Date:
November 19, 1986
Filing Date:
May 13, 1985
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
B60H1/00; B60H1/32; B60H3/00; B60H3/02; (IPC1-7): B60H1/00; B60H1/32; B60H3/00
Attorney, Agent or Firm:
Atsushi Nakajima