# US 8,465,277 B2 · Heat engine with nozzle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,465,277 B2 - Document ID: US8465277B2 - Status: Granted - Kind: B2 - Application number: 12/797,470 - Filed: 2010-06-09 - Published: 2010-12-30 - Granted: 2013-06-18 - Earliest claimed: 2009-06-29 - Applicants: David Deng - Inventors: David Deng - Web page: https://patentgrep.com/patent/US8465277B2 ## CPC - F24C 1/02: adapted for the use of two or more kinds of fuel or energy supply (combinations of two or more stoves or ranges each having a different kind of fuel or energy supply F24C11/00) - F16K 11/0836: {having all the connecting conduits situated in more than one plane perpendicular to the axis of the plug} - F23C 1/08: liquid and gaseous fuel - F23K 5/005: {from a central source to a plurality of burners} - F23K 5/06: from a central source to a plurality of burners - F23N 1/007: {using mechanical means (F23N1/04 - F23N1/10 take precedence)} - F24H 3/006: {using fluid fuel} - F24H 9/1881: using fluid fuel - F23N 2235/18: Groups of two or more valves - F23N 2237/02: two or more burners - F23N 2237/08: two or more different types of fuel simultaneously - Y10T 137/86501: Sequential distributor or collector type - Y10T 137/86541: Plug - Y10T 137/86566: Rotary plug - Y10T 137/86815: Multiple inlet with single outlet - Y10T 137/86823: Rotary valve - Y10T 137/86831: Selective opening of plural ports - Y10T 137/87129: Rotary - Y10T 137/87161: With common valve operator - Y10T 137/87249: Multiple inlet with multiple outlet - Y10T 137/87917: Flow path with serial valves and/or closures - F24C: DOMESTIC STOVES OR RANGES (exclusively for solid fuels F24B); DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} - F23C: METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN {A CARRIER GAS OR} AIR (burners F23D) - F23K: FEEDING FUEL TO COMBUSTION APPARATUS (fuel feeders specially adapted for fluidised bed combustion apparatus F23C10/22) - F23N: REGULATING OR CONTROLLING COMBUSTION (control devices specially adapted for combustion apparatus in which combustion takes place in a fluidised bed of fuel or other particles F23C10/28; condition responsive controls for regulating combustion in domestic stoves with open fires for solid fuel F24B1/187) - F24H: FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL (steam generation F22) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A heat engine can have a fuel selector valve for selecting between a first fuel and a second fuel. Making the selection with the fuel selector valve can also determine a flow path through the heat engine, there being two different paths, each configured for a different fuel. A burner nozzle can form a single unit with the fuel selector valve. In some embodiments the burner nozzle can also form a single unit with an outlet valve. ## Claims ### Claim 1 A dual fuel heating source comprising: a fuel selector valve for rotatingly selecting between a first fuel and a second fuel to be used by the heating source; and a burner nozzle having a first orifice at an outlet end and two flow configurations through the burner nozzle, the first flow configuration configured for injecting the first fuel through the outlet end into a combustion chamber and the second flow configuration configured for injecting the second fuel through the outlet end into the combustion chamber wherein selecting the fuel with the fuel selector valve also determines the flow configuration through the burner nozzle, the burner nozzle forming a single unit with the fuel selector valve and configured to rotate about a same axis of rotation, wherein the first orifice defines an axis parallel with the axis of rotation. ### Claim 2 (depends on 1) The dual fuel heating source of claim 1, wherein the fuel selector valve configured to open one of two inputs to thereby permit flow through the opened input and prevent flow through the other. ### Claim 3 (depends on 2) The dual fuel heating source of claim 2, further comprising an outlet valve, configured to direct a flow of fuel to the burner nozzle and to an ODS, and wherein the path to the burner nozzle and ODS through the outlet valve is determined by the fuel selector valve. ### Claim 4 (depends on 1) The dual fuel heating source of claim 1, wherein the burner nozzle having a first chamber configured for a flow of liquid propane and a second chamber outside the first chamber and configured for a flow of natural gas. ### Claim 5 (depends on 1) The dual fuel heating source of claim 1, further comprising an air shutter configured for adjustment by the rotation of the burner nozzle. ### Claim 6 (depends on 1) The dual fuel heating source of claim 1, wherein the fuel selector valve has a first position configured for the first fuel and a second position configured for the second fuel and wherein the first position of the fuel selector valve corresponds to the first flow configuration through the burner nozzle and the second position of the fuel selector valve corresponds to the second flow configuration through the burner nozzle. ### Claim 7 (depends on 6) The dual fuel heating source of claim 6, wherein the fuel selector valve defining a first flow configuration and a second flow configuration therethrough and the first position of the fuel selector valve corresponds to the first flow configuration through the fuel selector valve and the second position of the fuel selector valve corresponds to the second flow configuration through the fuel selector valve. ### Claim 8 (depends on 6) The dual fuel heating source of claim 6, further comprising an outlet valve, wherein the outlet valve is configured to direct a flow of fuel to either the first flow configuration or the second flow configuration of the burner nozzle, the outlet valve also configured to direct a flow of fuel to either a first ODS channel or a second ODS channel. ### Claim 9 (depends on 8) The dual fuel heating source of claim 8, wherein the burner nozzle comprises part of the outlet valve and the fuel selector valve is configured to rotate between the first position and the second position which rotates the burner nozzle and the outlet valve to move to the corresponding flow configuration. ### Claim 10 (depends on 1) The dual fuel heating source of claim 1, the burner nozzle comprising a second orifice wherein the second orifice is smaller than the first orifice and the first flow configuration through the burner nozzle passes through both the first and second orifices and the second flow configuration passes through only one of the orifices. ### Claim 11 (depends on 10) The dual fuel heating source of claim 10, wherein said burner nozzle defines an outlet end and wherein the second orifice is spaced from the outlet end of the burner nozzle and the first orifice is at the outlet end of the burner nozzle and wherein in the second flow configuration gas is permitted to flow through the first orifice but not the second orifice. ### Claim 12 (depends on 1) The dual fuel heating source heat engine of claim 1, the fuel selector valve comprising a first inlet for the first fuel and a second inlet for the second fuel. ### Claim 13 (depends on 1) The dual fuel heating source of claim 1, wherein the burner nozzle having a first chamber and a second chamber, each chamber configured for receiving a flow of fuel therethrough and having an exit. ### Claim 14 (depends on 13) The dual fuel heating source of claim 13, wherein the second chamber is substantially within the first chamber. ### Claim 15 (depends on 14) The dual fuel heating source of claim 14, wherein the exit of the second chamber is within the first chamber. ### Claim 16 (depends on 14) The dual fuel heating source of claim 14, wherein the exit of the second chamber protrudes past the exit of the first chamber. ### Claim 17 A dual fuel heating source comprising: a fuel selector valve for rotatingly selecting between a first fuel and a second fuel to be used by the heating source; a burner nozzle having two flow configurations through the burner nozzle, the first flow configuration configured for injecting the first fuel into a combustion chamber and the second flow configuration configured for injecting the second fuel into the combustion chamber wherein selecting the fuel with the fuel selector valve also determines the flow configuration through the burner nozzle, the burner nozzle forming a single unit with the fuel selector valve and configured to rotate about a same axis of rotation; and an air shutter configured for adjustment by the rotation of the burner nozzle. ### Claim 18 A dual fuel heating source comprising: a fuel selector valve for rotatingly selecting between a first fuel and a second fuel to be used by the heating source; and a burner nozzle having two flow configurations through the burner nozzle, the first flow configuration configured for injecting the first fuel into a combustion chamber and the second flow configuration configured for injecting the second fuel into the combustion chamber wherein selecting the fuel with the fuel selector valve also determines the flow configuration through the burner nozzle, the burner nozzle forming a single unit with the fuel selector valve and configured to rotate about a same axis of rotation, the burner nozzle having a first chamber and a second chamber, each chamber configured for receiving a flow of fuel therethrough and having an exit; wherein the second chamber is substantially within the first chamber and wherein the exit of the second chamber protrudes past the exit of the first chamber. ### Claim 19 A dual fuel heating source comprising: a fuel selector valve for rotatingly selecting between a first fuel and a second fuel to be used by the heating source; a burner nozzle having two flow configurations through the burner nozzle, the first flow configuration configured for injecting the first fuel into a combustion chamber and the second flow configuration configured for injecting the second fuel into the combustion chamber wherein selecting the fuel with the fuel selector valve also determines the flow configuration through the burner nozzle, the burner nozzle forming a single unit with the fuel selector valve and configured to rotate about a same axis of rotation; wherein the fuel selector valve is configured to open one of two inputs to thereby permit flow through the opened input and prevent flow through the other; and an outlet valve configured to direct a flow of fuel to the burner nozzle and to an ODS, and wherein the path to the burner nozzle and ODS through the outlet valve is determined by the fuel selector valve. ### Claim 20 (depends on 19) The dual fuel heating source of claim 19, further comprising an air shutter configured for adjustment by the rotation of the burner nozzle. ### Claim 21 (depends on 19) The dual fuel heating source heat engine of claim 19, the fuel selector valve comprising a first inlet for the first fuel and a second inlet for the second fuel. ### Claim 22 A dual fuel heating source comprising: a fuel selector valve for rotatingly selecting between a first fuel and a second fuel to be used by the heating source; a burner nozzle having two flow configurations through the burner nozzle, the first flow configuration configured for injecting the first fuel into a combustion chamber and the second flow configuration configured for injecting the second fuel into the combustion chamber wherein selecting the fuel with the fuel selector valve also determines the flow configuration through the burner nozzle, the burner nozzle forming a single unit with the fuel selector valve and configured to rotate about a same axis of rotation; wherein the fuel selector valve has a first position configured for the first fuel and a second position configured for the second fuel and wherein the first position of the fuel selector valve corresponds to the first flow configuration through the burner nozzle and the second position of the fuel selector valve corresponds to the second flow configuration through the burner nozzle; and an outlet valve configured to direct a flow of fuel to either the first flow configuration or the second flow configuration of the burner nozzle, the outlet valve also configured to direct a flow of fuel to either a first ODS channel or a second ODS channel. ### Claim 23 (depends on 22) The dual fuel heating source of claim 22, wherein the burner nozzle comprises part of the outlet valve and the fuel selector valve is configured to rotate between the first position and the second position which rotates the burner nozzle and the outlet valve to move to the corresponding flow configuration.