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. 20, 2002
Filed:
Mar. 27, 2001
Uwe Albert Buchholz, Bliedersdorf, DE;
Juergen Kelnhofer, Jork, DE;
Airbus Deutschland GmbH, Hamburg, DE;
Abstract
A cooling air arrangement for an aircraft air conditioning unit includes an air inlet, a heat exchanger, an outlet plenum, first and second air outlet channels branching from the plenum, and a fan arranged in the first outlet channel. During flight of the aircraft, external ram air driven into the air inlet flows primarily through the second outlet channel. During ground operation, the fan primarily sucks cooling air through the first outlet channel, which merges back into the second outlet channel at an air mixing junction that functions as an injector nozzle and a non-return flap valve. The first outlet channel is provided in a spiral housing of the fan, or in a smooth curved duct. The air inlet and outlet of the cooling air arrangement, and the air outlet of the air cycle machine, are oriented in the same direction, e.g. the flight forward direction.