The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 28, 2004
Filed:
Mar. 14, 2003
Jun Hatakeyama, Sano, JP;
Calsonic Kansei Corporation, Tokyo, JP;
Abstract
A vehicle air conditioning apparatus includes a heater core radiating heat of engine coolant to an air stream to be blown off to a vehicle compartment, a sub condenser operative to radiate heat of compressed refrigerant to the air stream to be blown off to the vehicle compartment for condensing refrigerant, an evaporator operative to allow expanded refrigerant by an expansion valve to absorb heat of the air stream in the vehicle compartment to be evaporated, a variable displacement compressor operative to compress evaporated refrigerant to be discharged to the condenser , a sensor that detects a discharge refrigerant pressure of the compressor , and a compressor control means operative to control a discharge refrigerant volume of the compressor so as to compel a blow-off temperature to lie at a given temperature in response to a detected result of the sensor