AR035571A1 - FLAMMABLE VAPOR CONTROL SYSTEM FOR APPLIANCES WITH PILOT FLAME AND A METHOD OF ADAPTATION OF A FLAMMABLE VAPOR SENSOR TO A CONTROL VALVE CIRCUIT. - Google Patents

FLAMMABLE VAPOR CONTROL SYSTEM FOR APPLIANCES WITH PILOT FLAME AND A METHOD OF ADAPTATION OF A FLAMMABLE VAPOR SENSOR TO A CONTROL VALVE CIRCUIT.

Info

Publication number
AR035571A1
AR035571A1 ARP010101712A ARP010101712A AR035571A1 AR 035571 A1 AR035571 A1 AR 035571A1 AR P010101712 A ARP010101712 A AR P010101712A AR P010101712 A ARP010101712 A AR P010101712A AR 035571 A1 AR035571 A1 AR 035571A1
Authority
AR
Argentina
Prior art keywords
sensor
flammable
solenoid
flammable vapor
thermocouple
Prior art date
Application number
ARP010101712A
Other languages
Spanish (es)
Original Assignee
Robertshaw Controls 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 Robertshaw Controls Co filed Critical Robertshaw Controls Co
Publication of AR035571A1 publication Critical patent/AR035571A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/725—Protection against flame failure by using flame detection devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/245—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2208/00—Control devices associated with burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/18—Detecting fluid leaks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/14—Fuel valves electromagnetically operated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/1407—Combustion failure responsive fuel safety cut-off for burners

Landscapes

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

Abstract

Un dispositivo de seguridad para cerrar el flujo de gas de un artefacto quemador de gas en presencia de vapores inflamable. Un sensor de vapores inflamables es insertado en un circuito que suministra la potencia derivada de una termocupla a una válvula activada por un solenoide. El sensor responde a la presencia de vapores inflamables incrementando la resistencia. Cuando una concentración crítica de vapores inflamables es alcanzada, la caída de voltaje a través del sensor causa el cierre de las válvulas activada por el solenoide. Reivindicación 13: Un método de adaptación de un sensor de vapores inflamables a un circuito de válvula de control, con el empleo de un mecanismo de solenoide, que incluye una bobina para mantener la válvula en posición abierta, y una termocupla para alimentar dicho mecanismo de solenoide cuando la termocupla se expone al calor de la llama piloto, que comprende los siguientes pasos: insertar un sensor de vapores inflamables de resistencia variable en serie, entre dicha termocupla y dicho mecanismo de solenoide; ajustar la resistencia de dicha bobina para proveer un flujo de corriente suficiente a través del sensor y la bobina para permitir que dicho mecanismo de solenoide mantenga dicha válvula en su posición abierta cuando se detectan vapores inflamables por debajo del nivel preseleccionado.A safety device to close the gas flow of a gas burner device in the presence of flammable vapors. A flammable vapor sensor is inserted into a circuit that supplies the power derived from a thermocouple to a valve activated by a solenoid. The sensor responds to the presence of flammable vapors by increasing resistance. When a critical concentration of flammable vapors is reached, the voltage drop across the sensor causes the closing of the valves activated by the solenoid. Claim 13: A method of adapting a flammable vapor sensor to a control valve circuit, with the use of a solenoid mechanism, which includes a coil to keep the valve in the open position, and a thermocouple to feed said mechanism. solenoid when the thermocouple is exposed to the heat of the pilot flame, which comprises the following steps: insert a flammable vapors sensor of variable resistance in series, between said thermocouple and said solenoid mechanism; adjust the resistance of said coil to provide sufficient current flow through the sensor and the coil to allow said solenoid mechanism to keep said valve in its open position when flammable vapors are detected below the preselected level.

ARP010101712A 2000-04-12 2001-04-11 FLAMMABLE VAPOR CONTROL SYSTEM FOR APPLIANCES WITH PILOT FLAME AND A METHOD OF ADAPTATION OF A FLAMMABLE VAPOR SENSOR TO A CONTROL VALVE CIRCUIT. AR035571A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19666600P 2000-04-12 2000-04-12

Publications (1)

Publication Number Publication Date
AR035571A1 true AR035571A1 (en) 2004-06-16

Family

ID=22726329

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP010101712A AR035571A1 (en) 2000-04-12 2001-04-11 FLAMMABLE VAPOR CONTROL SYSTEM FOR APPLIANCES WITH PILOT FLAME AND A METHOD OF ADAPTATION OF A FLAMMABLE VAPOR SENSOR TO A CONTROL VALVE CIRCUIT.

Country Status (4)

Country Link
US (1) US20010042564A1 (en)
AR (1) AR035571A1 (en)
BR (1) BR0101469A (en)
GT (1) GT200100059A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6893253B2 (en) 2001-03-08 2005-05-17 The Water Heater Industry Joint Research And Development Consortium Fuel-fired heating appliance with temperature-based fuel shutoff system
MXPA04012132A (en) * 2002-06-21 2005-05-04 Sit La Precisa Spa Control unit for controlling the delivery of a combustible gas in valve units, particularly for water heating apparatuses, and valve unit including said unit.
US6732677B2 (en) 2002-10-15 2004-05-11 Emerson Electric Co. Bracket for water heater
US20050079459A1 (en) * 2003-10-09 2005-04-14 Claude Lesage Flammable vapour detector system for hot water heater
US6973819B2 (en) * 2003-11-01 2005-12-13 Honeywell International Inc. Differential compensated vapor sensor
US7319577B2 (en) * 2003-12-04 2008-01-15 Patrick M. Dolan Safety shut off for water heaters
US7032542B2 (en) * 2004-06-08 2006-04-25 Emerson Electric Co. Apparatus and methods for controlling a water heater
US7604478B2 (en) * 2005-03-21 2009-10-20 Honeywell International Inc. Vapor resistant fuel burning appliance
US20060275720A1 (en) * 2005-06-02 2006-12-07 Hotton Bruce A Low power control system and associated methods for a water heater with flammable vapor sensor
IT1399411B1 (en) 2009-07-17 2013-04-16 Eltek Spa SAFETY DEVICE AGAINST FUEL GAS LEAKS FOR DOMESTIC APPLIANCES
KR101003791B1 (en) * 2010-06-10 2010-12-24 박승형 Gas safety device
US9657947B2 (en) * 2013-03-15 2017-05-23 Oil, Gas and Industrial Process Equipment, Inc. Open solenoid valve with arc relighter, method to augment flame safeguard
CN204084382U (en) * 2014-07-03 2015-01-07 艾欧史密斯(中国)热水器有限公司 The intelligence combustion pre-repair system of flame and flame detecting device
US10323846B2 (en) * 2015-02-05 2019-06-18 William Lawrence Sweet Safety and convenience system for a gas grill

Also Published As

Publication number Publication date
US20010042564A1 (en) 2001-11-22
BR0101469A (en) 2001-11-13
GT200100059A (en) 2002-07-24

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