CA2538784A1 - Dual fuel boiler with backflow-preventing valve arrangement - Google Patents

Dual fuel boiler with backflow-preventing valve arrangement Download PDF

Info

Publication number
CA2538784A1
CA2538784A1 CA002538784A CA2538784A CA2538784A1 CA 2538784 A1 CA2538784 A1 CA 2538784A1 CA 002538784 A CA002538784 A CA 002538784A CA 2538784 A CA2538784 A CA 2538784A CA 2538784 A1 CA2538784 A1 CA 2538784A1
Authority
CA
Canada
Prior art keywords
fuel
pressure
backflow
burner section
dual fuel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002538784A
Other languages
French (fr)
Other versions
CA2538784C (en
Inventor
Raymond Hallit
Robert S. Glass
Larry J. Ashton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheem Manufacturing Co
Original Assignee
Rheem Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rheem Manufacturing Co filed Critical Rheem Manufacturing Co
Publication of CA2538784A1 publication Critical patent/CA2538784A1/en
Application granted granted Critical
Publication of CA2538784C publication Critical patent/CA2538784C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/002—Gaseous fuel
    • F23K5/005—Gaseous fuel from a central source to a plurality of burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/002—Regulating fuel supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2237/00—Controlling
    • F23N2237/08—Controlling two or more different types of fuel simultaneously

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

A dual fuel boiler has fuel delivery apparatus coupled to its burner section through a pressure regulator and operative to deliver to the burner section, from sources thereof, a selectively variable one of (1) a first fuel at a pressure greater than the pressure regulation setting of the pressure regulator, and (2) a second fuel at a pressure less than the pressure regulation setting, the second fuel having a Wobbe index greater that that of the first fuel. The first fuel is flowed to the burner section via a branch supply line in which first and second electromechanical two-way, two position valves are installed in series in opposite normal flow orientations to thereby prevent backflow of the second fuel into the source of the first fuel.
CA002538784A 2006-01-03 2006-03-07 Dual fuel boiler with backflow-preventing valve arrangement Expired - Fee Related CA2538784C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/324,430 US20070154856A1 (en) 2006-01-03 2006-01-03 Dual fuel boiler with backflow-preventing valve arrangement
US11/324,430 2006-01-03

Publications (2)

Publication Number Publication Date
CA2538784A1 true CA2538784A1 (en) 2007-07-03
CA2538784C CA2538784C (en) 2009-09-08

Family

ID=38224868

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002538784A Expired - Fee Related CA2538784C (en) 2006-01-03 2006-03-07 Dual fuel boiler with backflow-preventing valve arrangement

Country Status (5)

Country Link
US (1) US20070154856A1 (en)
AU (1) AU2006201139B2 (en)
CA (1) CA2538784C (en)
MX (1) MXPA06003629A (en)
NZ (1) NZ546094A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7677236B2 (en) 2006-05-17 2010-03-16 David Deng Heater configured to operate with a first or second fuel
US7607426B2 (en) * 2006-05-17 2009-10-27 David Deng Dual fuel heater
US7434447B2 (en) 2006-05-17 2008-10-14 David Deng Oxygen depletion sensor
US8011920B2 (en) 2006-12-22 2011-09-06 David Deng Valve assemblies for heating devices
US8241034B2 (en) 2007-03-14 2012-08-14 Continental Appliances Inc. Fuel selection valve assemblies
US8152515B2 (en) * 2007-03-15 2012-04-10 Continental Appliances Inc Fuel selectable heating devices
US7654820B2 (en) 2006-12-22 2010-02-02 David Deng Control valves for heaters and fireplace devices
US8545216B2 (en) * 2006-12-22 2013-10-01 Continental Appliances, Inc. Valve assemblies for heating devices
US8465277B2 (en) 2009-06-29 2013-06-18 David Deng Heat engine with nozzle
US9829195B2 (en) 2009-12-14 2017-11-28 David Deng Dual fuel heating source with nozzle
US10073071B2 (en) 2010-06-07 2018-09-11 David Deng Heating system
WO2011156425A2 (en) 2010-06-07 2011-12-15 David Deng Heating system
EP2665972A2 (en) 2011-01-18 2013-11-27 David Deng Heating system with pressure regulator
US10222057B2 (en) 2011-04-08 2019-03-05 David Deng Dual fuel heater with selector valve
US9523497B2 (en) * 2012-07-04 2016-12-20 David Deng Dual fuel heater with selector valve
US9739389B2 (en) 2011-04-08 2017-08-22 David Deng Heating system
US9200802B2 (en) 2011-04-08 2015-12-01 David Deng Dual fuel heater with selector valve
US8985094B2 (en) 2011-04-08 2015-03-24 David Deng Heating system
US9175848B2 (en) 2011-12-05 2015-11-03 David Deng Dual fuel heater with selector valve
US9170016B2 (en) 2012-08-22 2015-10-27 David Deng Dual fuel heater with selector valve
CN102506198B (en) 2011-10-20 2013-05-22 南京普鲁卡姆电器有限公司 Dual-gas-source gas self-adaptive main control valve
US9022064B2 (en) 2012-05-10 2015-05-05 David Deng Dual fuel control device with auxiliary backline pressure regulator
US9091431B2 (en) 2012-09-13 2015-07-28 David Deng Dual fuel valve with air shutter adjustment
WO2014042837A1 (en) * 2012-09-13 2014-03-20 David Deng Dual fuel heating apparatus
US20140248567A1 (en) 2013-03-02 2014-09-04 David Deng Safety pilot
US9752779B2 (en) 2013-03-02 2017-09-05 David Deng Heating assembly
US10429074B2 (en) 2014-05-16 2019-10-01 David Deng Dual fuel heating assembly with selector switch
US10240789B2 (en) 2014-05-16 2019-03-26 David Deng Dual fuel heating assembly with reset switch
MX2016017194A (en) 2014-06-20 2017-09-18 Pentair Water Pool & Spa Inc Hybrid heater.
USD859618S1 (en) 2017-09-15 2019-09-10 Pentair Water Pool And Spa, Inc. Heating apparatus clip
US20230062854A1 (en) * 2021-08-25 2023-03-02 Grand Mate Co., Ltd. Gas appliance and a control method thereof

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Publication number Priority date Publication date Assignee Title
US2389413A (en) * 1941-09-26 1945-11-20 Carlton Frank Method of preventing backflow or back-siphonage in pressure systems
US2646816A (en) * 1944-10-05 1953-07-28 Donald G Griswold Backflow prevention device
US3001541A (en) * 1957-03-18 1961-09-26 Weatherhead Co Automatic regulator assembly
US3556947A (en) * 1967-11-09 1971-01-19 Koppers Co Inc Method for regulating the heating of coke ovens
USRE29481E (en) * 1971-02-01 1977-11-29 Fluid Devices, Ltd. Multi-way directional fluid flow control valve arrangement
US3906987A (en) * 1974-03-13 1975-09-23 Watts Regulator Co Swing open cross-connection valve
JPS5316927A (en) * 1976-07-30 1978-02-16 Kawasaki Heavy Ind Ltd Automatic combustion control system for fuel
US4232704A (en) * 1978-03-28 1980-11-11 Amtrol Inc. In line back flow preventer
US4217921A (en) * 1978-06-16 1980-08-19 Zurn Industries, Inc. Back flow preventer valve
US4231387A (en) * 1979-01-11 1980-11-04 Chas. M. Bailey Co., Inc. Backflow preventing valve
US4492207A (en) * 1981-02-27 1985-01-08 Petrosystems International, Inc. Dual fuel system
US4359284A (en) * 1981-03-17 1982-11-16 Honeywell Inc. Method and apparatus for determining the Wobbe index of gaseous fuels
US4523607A (en) * 1982-05-28 1985-06-18 Mueller Co. Backflow preventer apparatus
US4489746A (en) * 1982-05-28 1984-12-25 Mueller Co. Backflow preventer apparatus
US4559785A (en) * 1985-01-09 1985-12-24 Phillips Petroleum Company Boiler control
US5254092A (en) * 1992-09-15 1993-10-19 American Medical Systems, Inc. Fluid flow check valve
US5709240A (en) * 1995-08-11 1998-01-20 Grinnell Corporation Check valve and backflow preventer
US5947152A (en) * 1995-08-11 1999-09-07 Grinnell Corporation Check valve and backflow preventer
US5999888A (en) * 1997-06-09 1999-12-07 Alternate Energy Corporation Automated control system for managing multiple energy sources
US5816792A (en) * 1997-12-22 1998-10-06 Roberts-Gordon, Inc. Alternate gas fuel burning system
TW394465U (en) * 1998-12-28 2000-06-11 Hon Hai Prec Ind Co Ltd Electronic card connector
JP4562885B2 (en) * 2000-09-01 2010-10-13 愛三工業株式会社 Bidirectional pilot type electromagnetic flow path on-off valve and bidirectional piping
JP2002206696A (en) * 2001-01-09 2002-07-26 Honda Motor Co Ltd High pressure gas supply system
US6591817B2 (en) * 2001-03-21 2003-07-15 Motorola, Inc. Dual fuel method and system
CN1228568C (en) * 2001-03-23 2005-11-23 多孔燃烧器技术销售有限责任公司 Method and apparatus for setting air ratio
CN1209590C (en) * 2002-01-24 2005-07-06 顾雏军 Cooling and heating air conditioner in new structure
US6779333B2 (en) * 2002-05-21 2004-08-24 Conocophillips Company Dual fuel power generation system
US6904873B1 (en) * 2004-01-20 2005-06-14 Rheem Manufacturing Company Dual fuel boiler

Also Published As

Publication number Publication date
AU2006201139A1 (en) 2007-07-19
NZ546094A (en) 2007-08-31
CA2538784C (en) 2009-09-08
AU2006201139B2 (en) 2008-01-10
US20070154856A1 (en) 2007-07-05
MXPA06003629A (en) 2007-07-02

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