Baffle for sealed combustion chamber

• US 20060201662A1
• Filed: 03/14/2005
• Published: 09/14/2006
• Est. Priority Date: 03/14/2005
• Status: Active Grant

• Current Assignee: Allied Engineering Company Division of E-Z-Rect Manufacturing Limited
• Original Assignee: Allied Engineering Company Division of E-Z-Rect Manufacturing Limited
• Inventors: Larlee, Howard Allen, Gilbert, George Glen
• Granted Patent: US 7,650,933 B2
• Time in Patent Office: Days
• US Class Current: 165/159
• CPC Class Codes: F24H 1/26 the water mantle forming an integral body
• CPC Class Codes: F24H 9/0026 in combustion gas channels
• CPC Class Codes: F28D 21/0007 Water heaters
• CPC Class Codes: F28D 7/1615 the conduits being inside a casing and extending at an angle to the longitudinal axis of the casing; the conduits crossing the conduit for the other heat exchange medium
• CPC Class Codes: F28F 1/24 and extending transversely F28F1/38 takes precedence
• CPC Class Codes: F28F 9/22 Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates

Abstract

A baffle for a heat exchanger tube extending between opposed header pipes. The baffle is a longitudinal member with a concave underside shape conforming to the convex circumferential shape of the heat exchanger tube, and has a length substantially equal to the distance between the header pipes. A lip having a convex top side shape conforming to the concave underside shape of the longitudinal member extends along one longitudinal edge of the member. Two such members can be nested together by overlaying the non-lipped longitudinal edge of a one member atop the lipped longitudinal edge of the other member. A plurality of longitudinally aligned heat vent slits extend substantially the entire length of an uppermost portion of the member.

Claims

1. A baffle for a heat exchanger tube extending between opposed header pipes, the baffle comprising a longitudinal member having a concave underside shape conforming to the convex circumferential shape of the heat exchanger tube and having a length substantially equal to the distance between the header pipes.

2. A baffle as defined in claim 1, further comprising a tab formed on each opposed end of the longitudinal member, each tab sized and shaped for tight fitting engagement with one of the header pipes.

3. A baffle as defined in claim 2, each tab having an arcuate cross-sectional shape.

4. A baffle as defined in claim 1, further comprising at least one heat vent slit in the longitudinal member.

5. A baffle as defined in claim 1, further comprising a plurality of heat vent slits in the longitudinal member and wherein the heat vent slits are longitudinally aligned and extend substantially the entire length of the longitudinal member.

6. A baffle as defined in claim 5, wherein the heat vent slits extend along an uppermost portion of the longitudinal member.

7. A baffle as defined in claim 1, further comprising a lip extending longitudinally along one longitudinal edge of the longitudinal member.

8. A baffle as defined in claim 7, the lip having a convex top side shape conforming to the concave underside shape of the longitudinal member.

9. A baffle as defined in claim 7, further comprising two of said longitudinal members, a non-lipped longitudinal edge of a first one of said longitudinal members overlying a lipped longitudinal edge of a second one of said longitudinal members.

10. A baffle as defined in claim 8, further comprising two of said longitudinal members, a non-lipped longitudinal edge of a first one of said longitudinal members overlying a lipped longitudinal edge of a second one of said longitudinal members.

11. A hydronic heat exchanger having a baffle as defined in claim 1.

12. A hydronic heat exchanger having a baffle as defined in claim 9.

13. A hydronic heat exchanger having a baffle as defined in claim 10.

14. A hydronic boiler having a baffle as defined in claim 1.

15. A hydronic boiler having a baffle as defined in claim 9.

16. A hydronic boiler having a baffle as defined in claim 10.

17. A method of improving the heat transfer efficiency of a heat exchanger tube extending between opposed header pipes, the method comprising substantially covering a semi-cylindrical portion of an uppermost part of each one of the heat exchanger tubes, while directing hot gases upwardly through the heat exchanger tubes.

18. A method as defined in claim 17, further comprising controllably venting the hot gases away from the heat exchanger tubes.

19. A method as defined in claim 18, wherein the semi-cylindrical portion has an arc length of about 120°

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