Condensing heat exchanger with double bundle of tubes

Details Condensing heat exchanger with double bundle of tubes Condensing heat exchanger with double bundle of tubes

2007-09-11

2007-09-11

Wilson, Gregory (Department: 3749)

Liquid heaters and vaporizers

Indirectly heated

Separate fluid

C122S018100, C122S248000

Reexamination Certificate

active

10523576

ABSTRACT:
The invention relates to a heat exchanger comprising a pair of tube bundles (21, 31) through which the fluid to be heated flows, one primary bundle (21) surrounding a cylindrical burner (40) and the other secondary bundle (31) on which the water steam contained in the combustion gas exhausting from the primary bundle is condensed, whereby the tubes forming the bundles have a flattened section and a helicoidal shape, such that the combustion gas flow between the coils, from the inside to the outside for the primary bundle (21) and in the reverse order for the secondary bundle (31), both bundles being arranged inside a same shell (1). Said heat exchanger is characterised in that the axial dimension (l2) of the secondary bundle is substantially smaller than the axial dimension (I1) of the primary bundle, such that an available space for an exhaust trunking (7) is provided at the end of said secondary bundle (31). The present invention also relates to a gas- or oil-fired boiler, especially for domestic application, with high efficiency, space saving and reduced weight.

REFERENCES:
patent: 4357910 (1982-11-01), Blockley et al.
patent: 4393815 (1983-07-01), Pedersen et al.
patent: 4621681 (1986-11-01), Grover
patent: 5307802 (1994-05-01), Placek
patent: 5687678 (1997-11-01), Suchomel et al.
patent: 0 078 207 (1983-05-01), None
patent: WO94/16272 (1994-07-01), None

Affiliated with

Also associated with

Rating

Condensing heat exchanger with double bundle of tubes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Condensing heat exchanger with double bundle of tubes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Condensing heat exchanger with double bundle of tubes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3754504