A burner tube and door assembly for a water heater includes a burner tube and a fuel supply line in telescoping relationship to define a tube junction. The tube junction extends through the door of a water heater. One of the tube and line includes an enlarged portion. A lock ring applies a radially-
A burner tube and door assembly for a water heater includes a burner tube and a fuel supply line in telescoping relationship to define a tube junction. The tube junction extends through the door of a water heater. One of the tube and line includes an enlarged portion. A lock ring applies a radially-directed force around a portion of the tube junction. The enlarged portion and lock ring are on opposite sides of the door to secure the door to the burner tube and fuel supply line. The enlarged portion and lock ring apply a compressive load to the door to resist rotation of the door with respect to the tube junction.
대표청구항▼
1. A water heater comprising: a water storage tank;a combustion chamber having an access opening;a door adapted to cover the access opening, the door including a hole having a hole diameter, and including an inner surface facing the combustion chamber and an outer surface facing away from the combus
1. A water heater comprising: a water storage tank;a combustion chamber having an access opening;a door adapted to cover the access opening, the door including a hole having a hole diameter, and including an inner surface facing the combustion chamber and an outer surface facing away from the combustion chamber;a burner tube including an enlarged diameter portion having a outer diameter larger than the hole diameter, a first end on a first side of the enlarged diameter portion and extending into the combustion chamber, and a second end on a second side of the enlarged diameter portion opposite the first side, the first end defining a fuel delivery orifice, the second end having an outer diameter smaller than the hole diameter and extending through the hole in the door;a burner mounted to the first end of the burner tube and adapted to receive fuel from the fuel delivery orifice to create products of combustion to heat water in the storage tank;a fuel supply line having a first end adapted for connection to a source of fuel and a second end extending into the second end of the burner tube to define a tube junction; anda lock ring having an outer diameter larger than the hole diameter, and including a first end, a second end, and a tapered bore that has a larger diameter at the first end than at the second end, the lock ring surrounding at least a portion of the tube junction and applying a radially-directed force around a circumference of the tube junction to resist removal of the fuel supply line from the burner tube;wherein the enlarged diameter portion of the burner tube resists movement of the first end of the burner tube out of the combustion chamber through the hole in the door; andwherein the lock ring resists movement of the supply line into the combustion chamber through the hole in the door. 2. The water heater of claim 1, wherein the lock ring, door, enlarged diameter portion, second end of the burner tube, and second end of the supply line interact to apply compression on the door between the lock ring and enlarged portion to resist relative rotation between the door and the burner tube. 3. The water heater of claim 1, further comprising at least one washer between the door and at least one of the enlarged diameter portion of the burner tube and the lock ring. 4. The water heater of claim 3, wherein the at least one washer includes at least one lock washer compressed between the door and at least one of the enlarged diameter portion and the lock ring. 5. The water heater of claim 3, wherein the at least one washer includes a lock washer compressed between the enlarged diameter portion and the inner surface of the door and a lock washer compressed between the lock ring and the outer surface of the door. 6. A water heater comprising: a water storage tank;a combustion chamber having an access opening;a door adapted to cover the access opening, the door including a hole having a hole diameter, and including an inner surface facing the combustion chamber and an outer surface facing away from the combustion chamber;a burner tube including an enlarged diameter portion having a outer diameter larger than the hole diameter, a first end on a first side of the enlarged diameter portion and extending into the combustion chamber, and a second end on a second side of the enlarged diameter portion opposite the first side, the first end defining a fuel delivery orifice, the second end having an outer diameter smaller than the hole diameter and extending through the hole in the door;a burner mounted to the first end of the burner tube and adapted to receive fuel from the fuel delivery orifice to create products of combustion to heat water in the storage tank;a fuel supply line having a first end adapted for connection to a source of fuel and a second end extending into the second end of the burner tube to define a tube junction; anda lock ring having an outer diameter larger than the hole diameter, the lock ring surrounding at least a portion of the tube junction and applying a radially-directed force around a circumference of the tube junction to resist removal of the fuel supply line from the burner tube;wherein the enlarged diameter portion of the burner tube resists movement of the first end of the burner tube out of the combustion chamber through the hole in the door; andwherein the lock ring resists movement of the supply line into the combustion chamber through the hole in the door;wherein the second end of the fuel supply line includes a reduced diameter portion, a larger diameter portion, and a shoulder in between the reduced diameter portion and larger diameter portion; wherein the reduced diameter portion extends into the second end of the burner tube until the burner tube abuts the shoulder; wherein the larger diameter portion has an outer diameter that is less than the outer diameter of the second end of the burner tube; and wherein the lock ring is slid axially off the larger diameter portion and onto the second end of the burner tube during assembly to give rise to the radially-directed force around the entire circumference of the tube junction. 7. A burner tube and door assembly comprising: a door including an opening, and including oppositely-facing inner and outer surfaces;a burner tube including opposite first and second ends, the first end of the burner tube adapted to support and deliver gaseous fuel to a burner;a fuel supply line including opposite first and second ends, the first end of the fuel supply line adapted to interconnect to a source of gaseous fuel, the second end of the fuel supply line sized to interconnect with the second end of the burner tube in telescoping relationship to define a tube junction; anda lock ring including a first end, a second end, and a tapered bore that has a larger diameter at the first end than at the second end, the lock ring receiving the tube junction in the tapered bore and applying a radially-directed force around a portion of the tube junction to resist relative movement of the second ends of the burner tube and fuel supply line;wherein one of the burner tube and fuel supply line includes an enlarged portion that resists movement of the tube junction in a first direction through the opening in the door; andwherein the lock ring resists movement of the tube junction in a second direction through the opening in the door. 8. The assembly of claim 7, wherein the burner tube includes the enlarged portion; and wherein the second end of the fuel supply line extends into the second end of the burner tube. 9. The assembly of claim 7, further comprising at least one washer between the door and at least one of the enlarged portion and the lock ring. 10. The assembly of claim 9, wherein the at least one washer includes at least one lock washer compressed between the door and at least one of the enlarged portion and the lock ring. 11. The assembly of claim 9, wherein the at least one washer includes a lock washer compressed between the enlarged portion and an inner surface of the door and a lock washer compressed between the lock ring and an outer surface of the door. 12. The assembly of claim 7, wherein the lock ring, door, enlarged portion, second end of the burner tube, and second end of the supply line interact to apply compression on the door between the lock ring and enlarged portion to resist relative rotation between the door and the burner tube. 13. The assembly of claim 7, wherein the radially-directed force mechanically deforms the tube junction. 14. A method of assembling a burner tube and door assembly for a water heater, the method comprising the steps of: (a) providing a door having an opening;(b) a burner tube;(c) forming an enlarged portion in the burner tube to divide the burner tube into a first end on a first side of the enlarged portion and a second end on a second side of the enlarged portion opposite the first side, the enlarged portion being larger than a portion of the opening;(d) extending the second end of the burner tube through the opening;(e) providing a fuel supply line having a first end adapted for connection to a source of fuel and a second end opposite the first end;(f) extending the second end of the fuel supply line into the second end of the burner tube to define a tube junction; and(g) positioning a lock ring having a first end, a second end, and a tapered bore that has a large diameter at the first end then at the second end around the fuel supply line;(h) sliding the lock ring over the tube junction such that the tapered bore applies a radially-directed force around a circumference of the tube junction to resist removal of the fuel supply line from the burner tube. 15. The method of claim 14, further comprising: prior to step (h), compressing the door between the lock ring and enlarged portion; and following step (h), maintaining compression on the door between the lock ring and enlarged portion. 16. The method of claim 14, further comprising the step of positioning at least one washer between the door and at least one of the enlarged diameter portion of the burner tube and the lock ring. 17. The method of claim 14, further comprising the step of positioning a lock washer between the enlarged portion and the door, wherein step (h) includes compressing the door between the enlarged portion and the lock ring, with the lock washer being deformed between the enlarged portion and the door to resist rotation of the door with respect to the burner tube. 18. The method of claim 14, further comprising the step of positioning a lock washer between the lock ring and the door, wherein step (h) includes compressing the door between the enlarged portion and the lock ring, with the lock washer being deformed between the lock ring and the door to resist rotation of the door with respect to the burner tube. 19. The method of claim 14, wherein step (h) includes mechanically deforming the tube junction.
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이 특허에 인용된 특허 (30)
Lesage, Claude, Combustion chamber shield for hot water heaters.
Morris ; II Robert D. (Dallas Center IA) Murphey Richard W. (Des Moines IA) Swanton David K. (Goose Lake IA), Storage tank assembly for bulk fat and method for using same.
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