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:
Feb. 13, 2007
Filed:
Mar. 23, 2005
Mitsuyo Oomura, Hekinan, JP;
Toshinobu Homan, Oobu, JP;
Mitsuyo Oomura, Hekinan, JP;
Toshinobu Homan, Oobu, JP;
Denso Corporation, Kariya, JP;
Abstract
A vehicular air-conditioner wherein when a detected temperature of an inverter temperature sensor () exceeds a predetermined value, an inverter () driving an electric motor () of an electric compressor () operates in an overheat protection mode for driving the electric motor by a heat protection speed different from the speed command value from the air-conditioning controller (), secures the refrigerant flow rate, and cools itself. At this time, when a condenser fan () or vehicle compartment blower () is stopped by passenger operation or air-conditioning control, it is operated to promote the heat exchange at the heat exchangers, whereby it becomes possible to prevent an increase in the refrigerant pressure in the condenser () and prevent frost at the evaporator () and possible to protect against failure of function of the refrigeration cycle ().