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:
Sep. 18, 2001
Filed:
Oct. 15, 1999
Erik Hedman, Linkoping, SE;
Volvo Lastvagnar AB, Gothenburg, SE;
Abstract
The invention related to a method in the manufacture of a plate heat exchanger (,), preferably a so-called recuperator. This has flow channels arranged between the plates, every other channel being designed to accommodate the flow of a heat-emitting medium and every second channel the flow of a heat-absorbing medium. The flow channels for one of the media, preferably the heat-absorbing medium, are connected in parallel to manifolds for the said medium. The plates also have a raised pattern designed to produce a counter-flow section and two cross-flow sections in the recuperator, one on either side of the counter-flow section, the cross-flow sections having a lower raised pattern height than the counter-flow section. By means of a punching and pressing operation openings (,′) are made in each plate, with side walls formed around the edges of the openings. Following a joining process, in which the side walls undergo pressure resistant jointing, the side walls from walls of the manifolds (,). The entire raised patterns of the counter-flow section and the cross-flow sections on each plate are pressed to their respective raised pattern height in the said pressing operation.