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:
Aug. 01, 1989
Filed:
Apr. 13, 1988
Hitachi, Ltd., Tokyo, JP;
Abstract
In an air conditioning system for a vehicle, a duct case has defined therewithin a cold-air passageway and a hot-air passageway. A heater is arranged within the duct case for heating air flowing through the hot-air passageway. An air-mixing damper is arranged for angular movement within the duct case at a location upstream of the heater, for adjusting flow rate of air passing through the cold-air passageway and flow rate of air passing through the hot-air passageway. A plurality of cold-air blowing openings open to the hot-air passageway at a location downstream of the heater. A cold-air bypass passage is provided for leading cold air before passing through the heater to the cold-air blowing openings. The cold air led by the cold-air bypass passage is blown from the cold-air blowing openings into flow of the hot air having passed through the heater such that the cold-air flow is intersected with the hot-air flow, thereby forcibly mixing the hot air and the cold air with each other.