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
Robotic catheter system with dynamic response
Origami gift box
Paint brush with detachable head
Image display device, image display method, and image display program
Mobile device vessel
Gaming device having two card readers
Metal-on-passivation resistor for current sensing in a chip-scale package
  Randomly Featured Patents
Plate for stencil printing
Curable composition, method for manufacturing thereof, and uses thereof
Replacement of steering rack boots
Image processing method, image processing apparatus and image pickup apparatus and display apparatus suitable for the application of image processing method
Fixing roller
Liquid gaging system
Ultraviolet and infrared radiation absorbing and low transmitting glass
Playground equipment module
Multi-layered real-time stereo matching method and system