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. 03, 1990
Filed:
Oct. 07, 1987
Klaus Hagemeister, Munich, DE;
Alfred Hueber, Merching, DE;
MTU Motoren-und Turbinen-Union GmbH, Munich, DE;
Abstract
A heat exchanger having an inlet duct for admission of a first fluid to be heated, an outlet duct for discharge of the first fluid after heating thereof, the ducts being arranged in substantially parallel relation, and an assembly of a plurality of heat exchanger tubes connected to the inlet and outlet ducts for receiving the first fluid from the inlet duct to convey the first fluid through the tubes for discharge into the outlet duct. The heat exchanger tubes are of U-shape each including a curved bend region in which reversal of direction of flow of the first fluid is effected. The assembly of heat exchanger tubes extends laterally of the ducts into the path of travel of a second fluid which flows around the tubes in a passage area to effect heat exchange with the first fluid in the tubes. In order to promote heat exchange in the curved bend region of the tubes, the tubes are arranged in a plurality of separate groups adjacent to one another lengthwise of the ducts and the tubes in each group converge towards one another in the curved bend regions to reduce the passage area thereat for the flow of the second fluid around the tubes.