Claims
- 1. In a water boiler having a burner and coiled heat exchanger tube contained within an enclosed shell, the burner generating products of combustion including unburned residue, the center of the coiled tube being plugged by a core extending therein, the core having a top directed towards the burner,
- the improvement of the top of the core having a reducing diameter facing the burner, means for said reducing diameter top to concentrate the products of combustion flowing longitudinally away from the burner between the core and the coiled heat exchanger tube at the intersection between the top of the core and the surrounding coiled heat exchanger tube so as to develop a relatively high temperature thereat so as to destroy any unburned residue at this location.
- 2. The improvement of claim 1 characterized in that said reducing diameter top is a cone.
- 3. The improvement of claim 2 characterized in that said cone is truncated.
- 4. The improvement of claim 1 wherein the coiled tube is located between the core and the enclosed shell by an aggregate distance,
- and characterized by the addition of heat exchanging elements, said heat exchanging elements extending off of the coiled tube and said heat exchanger elements filling the aggregate distance between the core and the enclosed shell.
- 5. The improvement of claim 1 wherein the shell has an outlet end and the core has a bottom and characterized in that the bottom of the core is spaced from the outlet end of the core.
- 6. The improvement of claim 1 wherein said coiled heat exchanger tube includes fins, said fins having a pitch which directs the flow of the products of combustion in longitudinal movement with no radial flow.
- 7. The improvement of claim 1 characterized in that said reducing diameter top is a dome.
- 8. In a water boiler having a burner and coiled heat exchanger tube contained within an enclosed shell, the burner generating products of combustion including unburned residue, the center of the coiled tube being plugged by a core extending therein, the core having a top directed towards the burner,
- the improvement of the top of the core having a reducing diameter facing the burner, means for said reducing diameter top to concentrate the products of combustion at the intersection between the top of the core and the surrounding coiled heat exchanger tube so as to develop a relatively high temperature thereat so as to destroy any unburned residue at this location,
- the heat exchanger tube having externally extending fins, and said fins and the core defining longitudinally extending discrete air flow passages past the core.
- 9. In a water boiler having a burner and coiled heat exchanger tube contained within an enclosed shell, the burner generating products of combustion including unburned residue, the center of the coiled tube being plugged by a core extending therein, the core having a top directed towards the burner, the burner having an inward end,
- the improvement of the top of the core having a reducing diameter facing the burner means for said reducing diameter top to concentrate the products of combustion at the intersection between the top of the core and the surrounding coiled heat exchanger tube so as to develop a relatively high temperature thereat so as to destroy any unburned residue at this location, and
- the top of said reducing diameter core contacting the inward end of the burner.
- 10. In a water boiler having a burner and a coiled heat exchanger within an enclosed shell having an outlet end, the center of the coiled tube being plugged by a core having a bottom,
- the improvement of the bottom of the core being spaced from the outlet end of the shell to allow products of combustion to freely circulate in the resultant spaces, a spacer, and said spacer being located between the bottom of the core and the outlet end of the shell.
- 11. The improvement of claim 10 wherein the coiled tube is located between the core and the enclosed shell by an aggregate distance,
- and characterized by the addition of heat exchanging elements, said heat exchanging elements extending off of the coiled tube and said heat exchanger elements filling the aggregate distance between the core and the enclosed shell.
- 12. The improvement of claim 10 characterized in that the heat exchanger tube has externally extending fins, said fins and the core defining longitudinally extending discrete air flow passages past the core.
- 13. The improvement of claim 10 wherein the core has a top directed towards the burner and characterized n that the top of the core has a reducing diameter facing the burner.
- 14. The improvement of claim 13 characterized in that said reducing diameter top is a cone.
- 15. The improvement of claim 13 wherein the coiled tube is located between the core and the enclosed shell by an aggregate distance,
- and characterized by the addition of heat exchanging elements, said heat exchanging elements extending off of the coiled tube and said heat exchanger elements filling the aggregate distance between the core and the enclosed shell.
- 16. In a water boiler having a burner and coiled heat exchanger tube contained within an enclosed shell, the burner producing products of combustion including unburned residue, the center of the coiled tube being plugged by a core extending therein with a top facing the burner, the burner being at one longitudinal inlet end of the shell and the core being at the other longitudinal outlet end of the shell, the coiled tube being spaced from the core and enclosed shell by a radial aggregate distance,
- the improvement of the top of the core having a constantly reducing diameter facing the burner, means for said reducing diameter top to concentrate the products of combustion flowing longitudinally away from the burner the core and the coiled heat exchanger tube at the intersection between the top of the core and the surrounding coiled heat exchanger tube so as to develop a relatively high temperature thereat so as to destroy any unburned residue at this location, the coiled heat exchanger tube having heat exchanging elements,
- said heat exchanging elements extending off of the coiled tube, said heat exchanging elements filling the radial aggregate distance between core and the enclosed shell, and said heat exchanging elements producing longitudinal but not radial movement of the products of combustion between the core and enclosed shell as such products move between the inlet and outlet ends.
- 17. The improvement of claim 16 characterized in that said heat exchanging elements are fins, and said fins extending symmetrically off of the coiled tube.
- 18. In a water boiler having a burner and coiled heat exchanger tube contained within an enclosed shell,
- the burner producing products of combustion, the center of the coiled tube being plugged by a core extending therein with a top facing the burner,
- the burner being at one longitudinal inlet end of the shell and the core being at the other longitudinal outlet end of the shell, the coiled tube being spaced from the core and enclosed shell by a radial aggregate distance,
- the improvement of the top of the core having a constantly reducing diameter facing the burner, means for said reducing diameter top to concentrate the products of combustion at the intersection between the top of the core and the surrounding coiled heat exchanger tube so as to develop a relatively high temperature thereat so as to develop any unburned residue at this location the coiled heat exchanger tube having heat exchanging elements,
- said heat exchanging elements extending off of the coiled tube, said heat exchanging elements filling the radial aggregate distance between care and the enclosed shell, said heat exchanging elements producing longitudinal but not radial movement of the products of combustion between the core and the enclosed shell as such products move between the inlet and outlet ends between the inlet and outlet ends,
- said heat exchanging elements being fins, said fins are spirally extending at a certain pitch about the coiled tube, and said certain pitch increasing along with the surface area of said fins as the temperature of the products of combustion surrounding the fins decreases.
- 19. The improvement of claim 18 wherein said certain pitch of said fins is substantially nine fins per inch surrounding the burner and substantially eleven fins per inch surrounding the core.
- 20. In a water boiler having a burner and coiled heat exchanger tube contained within an enclosed shell, the burner producing products of combustion including unburned residue, the center of the coiled tube being plugged by a core extending therein with a top facing the burner, the burner being at one longitudinal inlet end of the shell and the core being at the other longitudinal outlet end of the shell, the coiled tube being spaced from the core and enclosed shell by a radial aggregate distance,
- the improvement of said heat exchanging elements extending off of the coiled tube, said heat exchanging elements filling the radial aggregate distance between core and the enclosed shell, said heat exchanging elements producing longitudinal but not radial movement of the products of combustion between the core and enclosed shell as such products move between the inlet and outlet ends
- said heat exchanging elements being fins said fins extending symmetrically off of the coiled tube and said fins having a pitch and said pitch of said fins being less surrounding the burner than surrounding the core.
- 21. In a water boiler having a burner and coiled heat exchanger tube contained within an enclosed shell, the burner producing products of combustion including unburned residue, the center of the coiled tube being plugged by a core extending therein with a top facing the burner, the burner being at one longitudinal inlet end of the shell and the core being at the other longitudinal outlet end of the shell, the coiled tube being spaced from the core and enclosed shell by a radial aggregate distance directed towards the burner, the burner having an inward end, the improvement of the top of the core having a constantly reducing diameter facing the burner, means for said reducing diameter top to concentrate the products of combustion at the intersection between the top of the core and the surrounding coiled heat exchanger tube so as to develop a relatively high temperature thereat so as to destroy unburned residue at this location, the top of the core contacting the inward end of the burner,
- said heat exchanging elements extending off of the coiled tube, said heat exchanging elements filling the radial aggregate distance between core and the enclosed shell, and said heat exchanging elements producing longitudinal but not radical movement of the products of combustion between the core and enclosed shell as such products move between the inlet and outlet ends.
- 22. In a water boiler having a burner and coiled heat exchanger tube contained within an enclosed shell having an outlet end, the burner producing products of combustion,
- the center of the coiled tube being plugged by a core extending therein with a top facing the burner, the core having a bottom,
- the burner being at one longitudinal inlet end of the shell and the core being near the other longitudinal outlet end of the shell, the coiled tube being spaced from the core and enclosed shell by a radial aggregate distance,
- the improvement of the bottom of the core being spaced from the outlet end of the shell, a spacer, said spacer being located between the bottom of the core and the outlet end of the shell, the coiled heat exchanger tube having heat exchanging elements,
- said heat exchanging elements extending off of the coiled tube, said heat exchanging elements filling the radial aggregate distance between core and the enclosed shell, and said heat exchanging elements producing longitudinal but not radial movement of the products of combustion between the core and enclosed shell as such products move between the inlet and outlet ends.
- 23. The improvement of claim 22 characterized in that said heat exchanging elements are fins, and said fins extending symmetrically off of the coiled tube.
- 24. The improvement of claim 22 characterized in that the top of the core has a constantly reducing diameter facing the burner.
- 25. In a water boiler having a burner with an inner end and coiled heat exchanger tube contained within an enclosed shell, the shell having a length, the burner producing products of combustion including unburned residue,
- the center of the coiled tube being plugged by a core having an outer diameter and extending in the enclosed shell with a top facing the burner, the burner being at one longitudinal end of the shell and the core being at the other longitudinal end of the shell, the coiled tube being spaced from the core, and enclosed shell by an aggregate radial distance,
- the improvement of the top of the core having a constantly reducing diameter facing the burner, means for said reducing diameter top to concentrate the products of combustion at the intersection between the top of the core and the surrounding coiled heat exchanger tube so as to develop a relatively high temperature thereat so as to destroy any unburned residue at this location, the coiled heat exchanger tube having heat exchanging fins,
- said heat exchanging fins being circular in cross section with said tube substantially centered therein, said heat exchanging fins extending off of the coiled tube at a pitch which creates successive fins for substantially the entire length of the shell, said heat exchanging fins filling the aggregate radial distance between core and the enclosed shell,
- said successive heat exchanging fins cutting slightly into the outer diameter of the core, and said heat exchanging fins producing longitudinal but not radial movement of the products of combustion between the core and enclosed shell as such products move between the inlet and outlet ends.
- 26. In a water boiler having a burner with an inner end and coiled heat exchanger tube contained within an enclosed shell, the burner producing products of combustion including unburned residue,
- the center of the coiled tube being plugged by a core having an outer diameter and extending in the enclosed shell with a top facing the burner, the burner being at one longitudinal end of the shell and the core being at the other longitudinal end of the shell, the coiled tube being spaced from the core, and enclosed shell by an aggregate radial distance,
- the improvement of the top of the core having a constantly reducing diameter facing the burner, means for said reducing diameter top to concentrate the products of combustion at the intersection between the top of the core and the surrounding coiled heat exchanger tube so as to develop a relatively high temperature thereat so as to destroy any unburned residue at this location, the coiled heat exchanger tube having heat exchanging fins,
- said heat exchanging fins being circular in cross section with said tube substantially centered therein, said heat exchanging fins extending off of the coiled tube, said heat exchanging fins filling the aggregate radial distance between core and the enclosed shell,
- said heat exchanging fins cutting slightly into the outer diameter of the core, and said heat exchanging fins producing longitudinal but not radial movement of the products of combustion between the core and enclosed shell as such products move between the inlet and outlet ends,
- said fins being spirally extending at a certain pitch about the coiled tube, and said certain pitch increasing along with the surface area of said fins as the temperature of the products of combustion surrounding the fins decreases.
- 27. The improvement of claim 26 wherein said certain pitch of said fins is substantially nine fins per inch surrounding the burner and substantially eleven fins per inch surrounding the core.
- 28. In a water boiler having a burner with an inner end and coiled heat exchanger tube contained within an enclosed shell, the burner producing products of combustion,
- the center of the coiled tube being plugged by a core having an outer diameter and extending in the enclosed shell with a top facing the burner, the burner being at one longitudinal end of the shell and the core being at the other longitudinal end of the shell, the coiled tube being spaced from the core, and enclosed shell by an aggregate radial distance,
- the improvement of the coiled heat exchanger tube having heat exchanging fins,
- said heat exchanging fins being circular in cross section with said tube substantially centered therein, said heat exchanging fins extending off of the coiled tube, said heat exchanging fins filling the aggregate radial distance between core and the enclosed shell, said heat exchanging fins cutting slightly into the outer diameter of the core, said heat exchanging fins producing longitudinal but not radial movement of the products of combustion between the core and enclosed shell as such products move between the inlet and outlet ends, said fins having a pitch and said pitch of said fins being less surrounding the burner than surrounding the core.
- 29. In a water boiler having a burner with an inner end and coiled heat exchanger tube contained within an enclosed shell, the burner producing products of combustion including unburned residue, the burner having an inward end,
- the improvement of the top of the core having a constantly reducing diameter facing the burner, means for said reducing diameter top to concentrate the products of combustion at the intersection between the top of the core and the surrounding coiled heat exchanger tube so as to develop a relatively high temperature thereat so as to destroy any unburned residue at this location, the coiled heat exchanger tube having heat exchanging fins,
- said heat exchanging fins being circular in cross section with said tube substantially centered therein, said heat exchanging fins extending off of the coiled tube, said heat exchanging fins filling the aggregate radial distance between core and the enclosed shell,
- said heat exchanging fins cutting slightly into the after diameter of the core, and said heat exchanging fins producing longitudinal but not radial movement of the products of combustion between the core and enclosed shell as such producing move between the inlet and outlet ends, and
- the top of the core contacting the inward end of the burner.
- 30. In a water boiler having a burner with an inner end and coiled heat exchanger tube contained within an enclosed shell the burner producing products of combustion,
- the center of the coiled tube being plugged by a core having an outer diameter and extending in the enclosed shell with a top facing the burner, the burner being at one longitudinal end of the shell and the core being at the other longitudinal end of the shell, the coiled tube being spaced from the core, and enclosed shell by an aggregate radial distance,
- the improvement of the coiled heat exchanger tube having heat exchange fins,
- said heat exchange fins being circular in cross section with said tube substantially centered therein, said heat exchanging fins extending off of the coiled tube, said heat exchanging fins filling the aggregate radial distance between core and the enclosed shell said heat exchanging fins cutting slightly into the outer diameter of the core, said heat exchanging fins producing longitudinal but not radial movement of the products of combustion between the core and enclosed shell as such products move between the inlet and outlet ends said fins having a pitch said pitch of said fins being less surrounding the burner than surrounding the core, and said pitch of said fins changing substantially at the top of the core.
- 31. In a water boiler having a burner with an inner end and coiled heat exchanger tube contained within an enclosed shell having an outlet and a length, the burner producing products of combustion including unburned residue,
- the center of the coiled tube being plugged by a core having an outer diameter and extending in the enclosed shell with a top facing the burner and a bottom facing the outlet of the shell, the burner being at one longitudinal end of the shell and the core being at the other longitudinal end of the shell, the coiled tube being spaced from the core and enclosed shell by an aggregate radial distance,
- the improvement of the top of the core having a constantly reducing diameter facing the burner, means for said reducing diameter top to concentrate the products of combustion at the intersection between the top of the core and the surrounding coiled heat exchanger tube so as to develop a relatively high temperature thereat so as to destroy any unburned residue at this location, the coiled heat exchanger tube having heat exchanging fins,
- said heat exchanging fins being circular in cross section with said tube substantially centered therein, said heat exchanging fins extending off of the coiled tube at a pitch which creates successive fins for substantially the entire length of the shell, said heat exchanging fins filling the aggregate radial distance between core and the enclosed shell, said successive heat exchanging fins cutting slightly into the outer diameter of the core, and said heat exchanging fins producing longitudinal but not radial movement of the products of combustion between the core and enclosed shell as such products move between the inlet and outlet ends.
- 32. In a water boiler having a burner with an inner end and coiled heat exchanger tube contained within an enclosed shell having an outlet, the burner producing products of combustion including unburned residue,
- the center of the coiled tube being plugged by a core having an outer diameter and extending in the enclosed shell with a top facing the burner and a bottom facing the outlet of the shell, the burner being at one longitudinal end of the shell and the core being at the other longitudinal end of the shell, the coiled tube being spaced from the core and enclosed shell by an aggregate radial distance,
- the improvement of the top of the core having a constantly reducing diameter facing the burner, means for said reducing diameter top to concentrate the products of combustion at the intersection between the top of the core and the surrounding coiled heat exchanger tube so as to develop a relatively high temperature thereat so as to destroy any unburned residue at this location, the coiled heat exchanger tube having heat exchanging fins,
- said heat exchanging fins being circular in cross section with said tube substantially centered therein, said heat exchanging fins extending off of the coiled tube, said heat exchanging fins filling the aggregate radial distance between core and the enclosed shell, said heat exchanging fins cutting slightly into the outer diameter of the core, and said heat exchanging fins producing longitudinal but not radial movement of the products of combustion between the core and enclosed shell as such products move between the inlet and outlet ends,
- said fins being spirally extending at a certain pitch about the coiled tube, and said certain pitch increasing along with the surface area of said fins as the temperature of the products of combustion surrounding said fins decreases.
- 33. The improvement of claim 32 wherein said certain pitch of said fins is substantially nine fins per inch surrounding the burner and substantially eleven fins per inch surrounding the core.
- 34. In a water boiler having a burner with an inner end and coiled heat exchanger tube contained within an enclosed shell having an outlet, the burner producing products of combustion,
- the center of the coiled tube being plugged by a core having an outer diameter and extending in the enclosed shell with a top facing the burner and a bottom facing the outlet of the shell, the burner being at one longitudinal end of the shell and the core being at the other longitudinal end of the shell, the coiled tube being spaced from the core and enclosed shell by an aggregate radial distance,
- the improvement of the top of the core having a constantly reducing diameter facing the burner, a spacer, said spacer being between the outlet of the shell and the bottom of the core, the coiled heat exchanger tube having heat exchanging fins,
- said heat exchanging fins being circular in cross section with said tube substantially centered therein, said heat exchanging fins extending off of the coiled tube, said heat exchanging fins filling the aggregate radial distance between core and the enclosed shell, said heat exchanging fins cutting slightly into the outer diameter of the core, said heat exchanging fins producing longitudinal but not radial movement of the products of combustion between the core and enclosed shell as such products move between the inlet and outlet ends, and said fins having a pitch and said pitch of said fins being less surrounding the burner than surrounding the core.
- 35. The improvement of claim 34 characterized in that said pitch of said fins changes substantially at the top of the core.
- 36. In a water boiler having a burner with an inner end and coiled heat exchanger tube contained within an enclosed shell having an outlet, the burner producing products of combustion including unburned residue, the burner has an inward end,
- the center of the coiled tube being plugged by a core having an outer diameter and extending in the enclosed shell with a top facing the burner and a bottom facing the outlet of the shell, the burner being at one longitudinal end of the shell and the core being at the other longitudinal end of the shell, the coiled tube being spaced from the core and enclosed shell by an aggregate radial distance,
- the improvement of the top of the core having a constantly reducing diameter facing the burner, means for said reducing diameter top to concentrate the products of combustion at the intersection between the top of the core and the surrounding coiled heat exchanger tube so as to develop a relatively high temperature thereat so as to destroy any unburned residue at this location, the coiled heat exchanger tube having heat exchanging fins,
- said heat exchanging fins being circular in cross section with said tube substantially centered therein, said heat exchanging fins extending off of the coiled tube, said heat exchanging fins filling the aggregate radial distance between core and the enclosed shell, said heat exchanging fins cutting slightly into the outer diameter of the core, said heat exchanging fins producing longitudinal but not radial movement of the products of combustion between the core and enclosed shell as such products move between the inlet and outlet ends, and the top of the core contacting the inward end of the burner.
Parent Case Info
This is a streamlined continuation application of U.S. Ser. No. 08/260,335 filed Jun. 15, 1994 entitled Water Boiler which application is now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (2)
Number |
Date |
Country |
538122 |
Mar 1922 |
FRX |
1090679 |
Oct 1954 |
DEX |
Continuations (1)
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Number |
Date |
Country |
Parent |
260335 |
Jun 1994 |
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