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
Normalized contextual performance metric for the assessment of fatigue-related incidents
Method and apparatus for reducing cost of optical amplification in a network
Digital broadcast receiver and method for processing caption thereof
Stretchable elastic laminate having increased CD elongation zones and method of production
Semiconductor device, semiconductor device design method, semiconductor design apparatus, and program
Bi-directional pattern dependent noise prediction
System and method for managing a loyalty program via an association network infrastructure
  Randomly Featured Patents
Photoimageable composition having improved alkaline process resistance and tack-free surface for contact imaging
Alignment of optical fiber arrays to optical integrated circuits
Agent registration and bidding system
Probe head structure for probe test cards
Memory metal actuator
Chip resistor and its manufacturing method
Web cam for indicating the expression of a remote end user
Stapler with adjustable paper guide
Microelectronic integrated circuit including hexagonal semiconductor "gate " device
Lyospheres comprising gonadotropin