A dual fuel heating source can have a burner and a nozzle. The heating source can be configured to use one of two different fuels flowing at different pressures. The nozzle can have a body, the body defining an outlet opening, an inlet, and an inner chamber. The nozzle can be configured for the firs
A dual fuel heating source can have a burner and a nozzle. The heating source can be configured to use one of two different fuels flowing at different pressures. The nozzle can have a body, the body defining an outlet opening, an inlet, and an inner chamber. The nozzle can be configured for the first fuel in a first position of said nozzle, and can be configured for a second fuel in a second position.
대표청구항▼
1. A dual fuel heating source comprising: a burner; anda nozzle having a body, the body defining an outlet opening, an inlet, and a wall forming an inner chamber, the wall shaped to direct flow between the inlet and the outlet but otherwise the inner chamber being an open chamber without obstruction
1. A dual fuel heating source comprising: a burner; anda nozzle having a body, the body defining an outlet opening, an inlet, and a wall forming an inner chamber, the wall shaped to direct flow between the inlet and the outlet but otherwise the inner chamber being an open chamber without obstruction between the inlet and the outlet;said outlet in fluid communication with said inlet, said outlet defining a flow area and configured to direct a flow of fuel to said burner;wherein a first position of said nozzle defines a first and a second position of the nozzle defines a second minimum cross-sectional flow area smaller than the first minimum cross-sectional flow area. 2. The dual fuel heating source of claim 1, wherein the outlet flow area comprises the first and second minimum cross-sectional flow areas. 3. The dual fuel heating source of claim 1, further comprising a dual fuel pressure regulator configured to be in fluid communication with the nozzle inlet. 4. The dual fuel heating source of claim 1, wherein the dual fuel heating source is configured to flow either of a first fuel at a first pressure or a second fuel at a second pressure different from the first through the dual fuel heating source. 5. The dual fuel heating source of claim 1, wherein the dual fuel heating source comprises part of a heater, oven, dryer or boiler. 6. The dual fuel heating source of claim 1, wherein the body is configured to move from the first position to the second position by changing the size of the body. 7. The dual fuel heating source of claim 6, wherein the body further comprises a slit along the body and ending at the outlet opening. 8. The dual fuel heating source of claim 6, wherein the outlet opening is configured to resiliently move between the first and second positions. 9. The dual fuel heating source of claim 6, wherein the nozzle further comprises an outer member, wherein the position of the outer member on the body determines whether the nozzle is in the first position or the second position. 10. The dual fuel heating source of claim 9, wherein the outer member is configured to be threaded onto the body. 11. A dual fuel heater comprising: a burner; anda nozzle, the nozzle having: a first member defining an inlet, an outlet; and a chamber between the inlet and outlet; anda second member coupled to an outside surface of the first member and controlling the shape and dimension of the outlet;wherein in a first relational position between the first member and the second member the outlet has a larger dimension than when in a second relational position. 12. The dual fuel heater of claim 11, wherein the nozzle further comprises a slit in the first member at the outlet. 13. The dual fuel heater of claim 11, wherein the second member is threadingly engaged with the first member. 14. The dual fuel heater of claim 11, wherein the chamber is an open chamber without internal structure apart from cylindrical housing walls. 15. The dual fuel heater of claim 11, wherein the inlet is larger than the outlet. 16. The dual fuel heater of claim 11, further comprising a first pressure regulator to regulate a flow of a first fuel and a second pressure regulator to regulate a flow of a second fuel different from the first fuel and at a higher pressure than the first fuel. 17. The dual fuel heater of claim 16, wherein the first fuel comprises natural gas and the second fuel comprises liquid propane. 18. The dual fuel heater of claim 16, further comprising a fuel selector valve having a first position configured to permit a flow of the first fuel from the first pressure regulator through the fuel selector valve and to prevent a flow of the second fuel therethrough and having a second position configured to permit a flow of the second fuel from the second pressure regulator through the fuel selector valve and to prevent a flow of the first fuel therethrough. 19. The dual fuel heater of claim 18, wherein the fuel selector valve and the nozzle are coupled together such that selecting the first position on fuel selector valve also places the nozzle in the first relational position and selecting the second position on the fuel selector valve also places the nozzle in the second relational position. 20. A dual fuel heater comprising: a burner; anda nozzle, the nozzle having: a first member defining an inlet, an outlet; a chamber between the inlet and outlet, and a slit in the first member at the outlet; anda second member threadingly engaged with the first member on an outside surface of the first member and controlling the shape and dimension of the outlet;wherein in a first relational position between the first member and the second member the outlet has a larger dimension than when in a second relational position, the outlet being open without obstruction at the outlet such that an installer can easily measure the size of the outlet and adjust as necessary.
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