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:
Nov. 01, 2005
Filed:
Nov. 17, 1999
Applicants:
Satoshi Matsumoto, Kobe, JP;
Takeshi Watanabe, Nara, JP;
Yoshitsugu Nishiyama, Katano, JP;
Inventors:
Assignee:
Matsushita Electric Industrial, Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28F003/00 ; B21D053/04 ;
U.S. Cl.
CPC ...
Abstract
A plate heat exchanger includes a plurality of plates sandwiched between a pair of end plates. Each of the plurality of plates has two passageways defined therein that are not in fluid communication with each other. Alternatively, some of the plurality of plates have a passageway, while some of the remaining plates have another passageway. Two fluids flow through the two passageways in a countercurrent fashion. Because the countercurrent flows are superior in heat transfer efficiency, it is possible to enhance the performance and reduce the size of the plate heat exchangers.