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:
Jul. 17, 1984
Filed:
Jun. 29, 1982
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A multizone air-conditioning system for a motor vehicle includes a single air-conditioning unit and an air distribution conduit. The air distribution conduit has multiple conduit portions with outlets respectively open to horizontally spaced apart zones of the passenger compartment. Each outlet has a switching damper for diverting a variable amount of conditioned airflow in response to a feedback control signal to vertically spaced apart zones of the compartment to automatically operate the system in one of different air-conditioned modes. The control signal is derived from temperature measurement data and a reference setting establised with respect to each horizontally spaced apart zone. The air-conditioning unit includes air mixing dampers respectively located in the conduit portions and a heating radiator having half portions thereof located respectively downstream of the mixing dampers. A correction signal is obtained from the result of comparison between the settings of air mixing dampers to control the setting of each switching damper to minimize the effect of thermal interferences which might exist between the conduit portions.