Resources Contact Us Home
Air conditioner for vehicles

Image Number 2 for United States Patent #5769316.

An air conditioner for a vehicle has a heat pump type refrigerant circuit capable of operating at least in a heating mode. The air conditioner comprises a motor fan for supplying air heated by a heat exchanger to the interior of the vehicle during operation of the heating mode, a sensor for detecting the temperature of the air at a position downstream of the heat exchanger and a control unit for controlling the volume of the air supplied by the motor fan to a predetermined minimum volume by controlling the drive of the motor fan when the detected air temperature is lower than a predetermined temperature. Even in a condition where a sufficiently large heat radiation from the heat exchanger cannot be expected, a large volume of cold air that has been insufficiently heated can be prevented from being discharged into the interior of the vehicle. Because the motor fan is driven at a condition of minimum air volume even when the detected temperature is lower than the predetermined temperature, a rapid variation of air volume caused at the time of changing a fan-stopping condition to a fan-driving condition can be avoided and an abnormal increase in the discharge pressure of the heat pump compressor can be prevented.

  Recently Added Patents
Systems, methods, and media for firewall control via remote system information
Light emitting device and light emitting device package
Recovering a database to any point-in-time in the past with guaranteed data consistency
Processor and data transfer method
Press nut
System and methods for random parameter filtering
  Randomly Featured Patents
Magnetic disk device
Process of manufacturing killed steel ingots of superior quality
Front opening bra with adjustable back
Tracking error detector employing phase difference detection method
Internal combustion engine monitor system
Methods for making semiconductor device structures with capacitor containers and contact apertures having increased aspect ratios
MIM-type electric device production thereof, and electronic apparatus employing the device
Monitor display
System for assisting fuel-efficient driving
Metal fabrics