Heat exchange – With agitating or stirring structure
Reexamination Certificate
2005-09-20
2005-09-20
Flanigan, Allen J. (Department: 3753)
Heat exchange
With agitating or stirring structure
C165S177000, C126S11000R
Reexamination Certificate
active
06945320
ABSTRACT:
A tubular heat exchanger has at least one pair of dimples which are extruded into at least one tube of the heat exchanger by deforming the tube wall inwardly. The dimples of each pair are in generally facing relationship, but are offset with respect to each other along a longitudinal axis of the tube, which slows down the flow of flue gas in the tube when the heat exchanger is in operation and increases the turbulence of the gas, thereby enhancing the transfer of heat from the flue gas to air flowing across the outer surfaces of the heat exchanger. The offset design allows each dimple to protrude beyond the centerline of the tube, which alters the direction of the flue gas flowing in the tube.
REFERENCES:
patent: 1991788 (1935-02-01), Catter
patent: 2591235 (1952-04-01), Cartter
patent: 3232280 (1966-02-01), Loebel
patent: 5094224 (1992-03-01), Diesch
patent: 5375654 (1994-12-01), Hougland et al.
patent: 5839505 (1998-11-01), Ludwig et al.
patent: 6289982 (2001-09-01), Naji
patent: 6422306 (2002-07-01), Tomlinson et al.
patent: 6453989 (2002-09-01), Watanabe et al.
patent: 2002/0005275 (2002-01-01), O'Donnell et al.
patent: 2003/0029608 (2003-02-01), Shimoya
Harvard, Jr. Harold Gene
Perez Eric M.
Schneider Steven
Flanigan Allen J.
Lennox Manufacturing Inc.
McCord W. Kirk
LandOfFree
Tubular heat exchanger with offset interior dimples does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tubular heat exchanger with offset interior dimples, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tubular heat exchanger with offset interior dimples will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3374700