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. 19, 2001
Filed:
Jun. 25, 1999
Fumio Shimizu, Oyama, JP;
Hiroyasu Shimanuki, Oyama, JP;
Hirohiko Watanabe, Oyama, JP;
Yuichi Furukawa, Oyama, JP;
Yuji Yamamoto, Oyama, JP;
Arif Mujib Khan, Farmington Hills, MI (US);
Qun Liu, Gross Ile, MI (US);
Thaddeus Waskiewicz, Dearborn, MI (US);
Visteon Global Technologies, Inc., Dearborn, MI (US);
Abstract
A refrigerant tube for a heat exchanger, comprising: a generally flat tube,having generally flat upper and lower walls,; a plurality of reinforcing walls,connected between the upper and lower walls,, the reinforcing walls extending along and generally parallel with a longitudinal axis A—A of the tube and being spaced apart from one another by a predetermined distance; and a plurality of communication holes,distributed along the length of each reinforcing wall,, thereby defining a plurality of discrete wall portions,along each reinforcing wall,, each of the discrete wall portions,being disposed between adjacent communication holes,and having an upstream edge,and a downstream edge,thereof, the communication holes,and discrete wall portions,having lengths L,and L,, respectively, as measured along the longitudinal axis A—A, the communication holes,being spaced apart along each reinforcing wall,by a pitch P. Each communication hole,in each reinforcing wall is disposed between the upstream and downstream edges,of a laterally adjacent discrete wall portion,of each adjacent reinforcing wall, such that a wall overlap ratio Wr, defined as [P−2L,]/P, is greater than 0, and preferably 0.4≦Wr≦0.6.