Tube bundle heat exchanger
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 3, 2017
Grant Date -
Mar 12, 2009
app pub date -
Jan 19, 2007
filing date -
Jan 23, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tube bundle heat exchanger has tubes which are held at each side in tube plates or oval-tube collecting-tube plates and are connected to these in each case by means of a weld seam. The connection of the tubes to the inlet-side tube plate or oval-tube collecting-tube plate is formed in each case by means of a conical and/or trumpet-shaped transition piece. The cross section of the transition piece reduces as viewed in the gas flow direction in such a way that the inlet-side end, as viewed in the gas flow direction, of the transition piece is connected in a butt joint to the tube plate or oval-tube collecting-tube plate. The inner and outer contours of the transition piece and of the welded connection region are formed without gaps and corners to the tube plate or oval tube collecting-tube plate and so as to be straight and/or with a radius, measured from the outer contour, of at least 5 mm.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2007 Application Filing Year
- F28D Class
- 341 Applications Filed
- 142 Patents Issued To-Date
- 41.65 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- F28D Class
- 22.30 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 3, 2028 |
