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:
Dec. 16, 2003
Filed:
Jan. 25, 2002
Ingvar Helge Birger Lindholm, Örsjö, SE;
Alfa Laval AB, Tumba, SE;
Abstract
The present invention concerns a plate heat exchanger for at least two heat exchanging fluids which is permanently joined with at least one sealing portion and has heat transferring plates ( ), at least two end plates and inlet and outlet organs for the heat exchanging fluids. The core of plates includes alternating heat transferring plates ( ) and intermediate heat transferring plates ( ) between the alternating plates. Adjacent plates form a double wall plate unit. The plate elements are permanently joined with each other in a plurality of points having spaced apart areas. For each one of the double wall units, ridges ( ) and valleys ( ) on the alternating plate ( ) are in tight contact with the corresponding ridges ( ) and valleys ( ) on the intermediate plates ( ) except right at at least one of the points with the spaced apart areas.