# US 2014/0150767 A1 · Heater configured to operate with a first or second fuel

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- Number: US 2014/0150767 A1
- Document ID: US20140150767A1
- Status: Published application
- Kind: A1
- Application number: 14/064,017
- Filed: 2013-10-25
- Published: 2014-06-05
- Earliest claimed: 2006-05-17
- Assignees: Procom Heating, Inc.
- Applicants: Procom Heating, Inc.
- Inventors: David Deng
- Web page: https://patentgrep.com/patent/US20140150767A1

## 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)
- F23C 1/08: liquid and gaseous fuel
- F23N 1/007: {using mechanical means (F23N1/04 - F23N1/10 take precedence)}
- F23Q 9/045: {Structurally associated with a main-burner}
- F24C 3/122: {on stoves}
- F24H 3/006: {using fluid fuel}
- F24H 9/2085: {using fluid fuel}
- F24H 15/20: characterised by control inputs
- F24H 15/281: Input from user
- F24H 15/31: of valves having only one inlet port and one outlet port, e.g. flow rate regulating valves
- F23N 2235/16: variable flow or proportional valves
- F23N 2235/18: Groups of two or more valves
- F23N 2237/08: two or more different types of fuel simultaneously
- F24C: DOMESTIC STOVES OR RANGES (exclusively for solid fuels F24B); DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F23C: METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN {A CARRIER GAS OR} AIR (burners F23D)
- 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)
- F23Q: IGNITION (devices or installations peculiar to internal-combustion engines F02P; of cigarettes or tobacco A24F; compositions therefor, chemical igniters C06C); EXTINGUISHING-DEVICES
- F24H: FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL (steam generation F22)

## Abstract

A heater can be configured to operate with either a first fuel at a first pressure or a second fuel at a second pressure. In some embodiments, a pressure regulator unit is configured to regulate the pressure of either the first fuel or the second fuel and to direct either the first fuel or the second fuel towards a combustion chamber. A nozzle assembly can be configured to inject the fuel into the combustion chamber.

## Claims

### Claim 1

(canceled)

### Claim 2

A dual fuel heater comprising:
a control valve;
a burner;
a burner pipe to direct fuel from the control valve towards the burner;
a first ODS orifice;
a second ODS orifice;
a ODS pipe to direct fuel from the control valve towards first and second ODS orifices;
a housing comprising an ODS inlet connected to the ODS pipe to receive fuel from the control valve and forming a junction to divide flow of fuel from the ODS pipe into two ODS streams; and
a valve member for controlling one ODS stream and having an ODS flow path through the valve member and open and closed positions to allow or prevent the ODS stream through the valve member.

### Claim 3 (depends on 2)

The dual fuel heater of claim 2, wherein the housing further comprising a burner inlet.

### Claim 4 (depends on 2)

The dual fuel heater of claim 2, wherein the valve member further comprising a burner flow path through the valve member and configured to control flow from the burner pipe through the valve member.

### Claim 5 (depends on 2)

The dual fuel heater of claim 2, wherein the first and second ODS orifices are positioned adjacent the burner.

### Claim 6 (depends on 2)

The dual fuel heater of claim 2, wherein the housing further comprising first and second burner outlets.

### Claim 7 (depends on 6)

The dual fuel heater of claim 6, wherein the housing further comprising first and second ODS outlets.

### Claim 8 (depends on 2)

The dual fuel heater of claim 2, further comprising a burner nozzle housing.

### Claim 9 (depends on 8)

The dual fuel heater of claim 8, the burner nozzle housing comprising two inlets and a single outlet.

### Claim 10 (depends on 2)

The dual fuel heater of claim 2, further comprising a pressure regulator and a control valve pipe coupled to the pressure regulator at one end and the control valve at an opposite end, wherein the pressure regulator is positioned to direct fuel to the control valve through the control valve pipe.