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:
Jun. 22, 2004
Filed:
Oct. 01, 2002
Bernd Dienhart, Cologne, DE;
Hans-Joachim Krauss, Stuttgart, DE;
Hagen Mittelstrass, Bondorf, DE;
Karl-Heinz Staffa, Stuttgart, DE;
Christoph Walter, Stuttgart, DE;
Bernd Kallfass, Weissach, DE;
Behr GmbH & Co., Stuttgart, DE;
Abstract
The invention relates to an air conditioning unit with a coolant circuit which consists of a compressor, an evaporator, a collector located at the low pressure side between the evaporator and the compressor and an inner heat transfer unit with a beat transfer channel located at the high pressure side and a low pressure side beat transfer channel. According to the invention, the inner heat transfer unit has an at least segmentally spiraling and/or spiral-shaped steps between the outer and inner pipe of a coaxial pipe system. Additionally or alternatively, the inner heat transfer unit contains a multiple channel line which surrounds the collector in a spiral fashion and/or in which a low pressure side pipe longitudinal channel has a first segment which exits into said collector housing and a second segment which exits out of the said collector housing in addition to a high-pressure side pipe longitudinal channel which traverses the collector housing or leads into a first segment in a high-pressure execution chamber of said collector housing and a second segment leads out of the said chamber. Said invention can be used as a CO -air conditioning unit in vehicles.