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
Fax messaging for new users
Circular saw
System and method for providing high availability data
Information storage medium, reproducing method, and recording method
Device for arbitrating bus accesses and method for controlling same
Arrangement for extracting document from scan made with cover open
Energy efficient continuous sensing for communications devices
  Randomly Featured Patents
Inclined getter structure for a magnetron
Apparatus for stimulating hamstring contraction to effect optimum abdominal muscle conditioning
Video surveillance system for selectively selecting processing and displaying the outputs of a plurality of TV cameras
Projection lens systems for use in projection television
Golf club head having a composite crown
Low profile antenna for in body device
Density-enhanced remediation of dense non-aqueous phase liquid contamination of subsurface environments
Folding implement frame
Concrete delivery apparatus