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:
Apr. 21, 2009
Filed:
Feb. 16, 2005
Satoshi Itoh, Kariya, JP;
Yoshitaka Tomatsu, Chiryu, JP;
Yasutaka Kuroda, Anjo, JP;
Denso Corporation, Kariya, JP;
Abstract
An automotive air conditioning system has a primary hot water circuitlocated on a side where a vehicle installed heat generatoris located and a secondary hot water circuitwhich includes a hot water type heater corefor heating passenger compartment outlet air, whereby when in a heating mode, in the event that a coolant temperature TWof the primary hot water circuit is lower than a coolant temperature TWof the secondary hot water circuit, an opening and closing valveis closed, whereas an opening and closing valveis opened, so that a state is created in which the hot water circuitsare separated from each other. On the other hand, in the event that the coolant temperature TWof the primary hot water circuit becomes higher than the coolant temperature TWof the secondary hot water circuit, the opening and closing valveis opened, whereas the opening and closing valveis closed, so that a state is created in which the hot water circuitsare connected to each other.