EP0884530A1 - Zuführventil für einen Brenner - Google Patents

Zuführventil für einen Brenner Download PDF

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Publication number
EP0884530A1
EP0884530A1 EP98304554A EP98304554A EP0884530A1 EP 0884530 A1 EP0884530 A1 EP 0884530A1 EP 98304554 A EP98304554 A EP 98304554A EP 98304554 A EP98304554 A EP 98304554A EP 0884530 A1 EP0884530 A1 EP 0884530A1
Authority
EP
European Patent Office
Prior art keywords
outlet
valves
supply valve
valve
inlet
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.)
Withdrawn
Application number
EP98304554A
Other languages
English (en)
French (fr)
Inventor
Barry Ian Chuter
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.)
Kigass Electronics Ltd
Original Assignee
Kigass Electronics Ltd
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 Kigass Electronics Ltd filed Critical Kigass Electronics Ltd
Publication of EP0884530A1 publication Critical patent/EP0884530A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/005—Regulating fuel supply using electrical or electromechanical means
    • 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
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/16—Fuel valves variable flow or proportional valves
    • 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
    • F23N2235/18—Groups of two or more valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2237/00—Controlling
    • F23N2237/20—Controlling one or more bypass conduits

Definitions

  • This invention relates to a supply valve for a fuel burning appliance.
  • Modern fuel burning appliances such as cookers, heaters and boilers, are typically capable of being operated in a variety of different modes. These appliances can be fuelled by a variety of different fluid fuels, such as gas or kerosene.
  • regulating means In modern gas cookers, for example, it is commonplace for means to be provided that enable a user to regulate the temperature in an oven or grill of the appliance.
  • the regulating means typically acts to vary the amount of gas being burnt in the oven and thus to vary the heat generated in the oven.
  • the regulating means typically comprise a valve arrangement which is manipulatable by way of external controls on the appliance.
  • an external knob In gas cookers, for example, it is commonplace for an external knob to be provided that is rotatable to different gas mark settings.
  • the gas mark settings correspond to a gas flow rate which, when the gas is burnt, causes a predetermined quantity of heat to be given off to heat, for example, an oven in the appliance.
  • a user manipulating the external knob causes an internal valve to be opened or closed between a closed position and a fully open position to regulate the amount of gas entering and being burnt by the appliance.
  • the valve is connected to a sophisticated temperature monitoring system which includes an alcohol or mercury vial which, when heated, gives rise to an electric signal which is monitored by a controller.
  • the controller is connected to a modulated motorised control valve which can be controlled, based on the signals generated by the monitoring system, to restrict or increase the appliance's fuel combustion rate thereby to control the temperature in, for example, an oven of the appliance.
  • any component cost savings that can be made by a manufacturer can enable that manufacturer to increase the profit margin on the appliance or to reduce the retail price of the appliance, without affecting the profit margin, so that the appliance is more commercially attractive to potential purchasers.
  • valve must be intrinsically safe so that, in the event of valve failure, the risk of unwanted fuel escape is reduced.
  • manufacturers are averse to reducing the quality of valve components in order to reduce costs, as to do so could result in a valve that could give rise to unwanted fuel escape with potentially life-threatening consequences.
  • attempts to reduce the valve costs have hitherto not been undertaken as to do so could compromise safety.
  • a supply valve for a fuel burning appliance comprising: an inlet and an outlet; a plurality of passageways interconnecting the inlet and the outlet; and a plurality of valves each for opening and closing at least one of said passageways.
  • the present invention alleviates the above-mentioned problems by providing a valve which is both inexpensive to manufacture and reliably safe in operation.
  • each of the passageways has a different cross-sectional area.
  • Each of the passageways may comprise at least one pipe.
  • the passageways comprise channels in a valve body.
  • valves are operable in isolation from the other valves.
  • at least some of the valves are operable in combination with one or more of the other valves.
  • an outlet valve operable to open and close the outlet is provided.
  • valves are opened against a resilient bias acting to close the valves.
  • an additional passageway interconnecting the inlet and the outlet without a valve therein is provided.
  • the additional passageway may have a smaller cross-sectional area than any of the said plurality of passageways.
  • a supply valve for a fuel burning appliance comprising: an inlet and an outlet; a passageway connecting the inlet to the outlet; an outlet valve for opening or closing the outlet; and a plurality of flow control valves provided between the inlet and the outlet valve, the flow control valves each having members with a bore therethough, the cross sectional areas of the bores being different.
  • a circuit for controlling the above described supply valve comprising user actuation means, the user actuation means being operable by a user to select a setting for the fuel burning appliance, the valves being operated in response to the selected setting.
  • the user actuation means comprises a switch moveable from a first position where none of the valves are opened and other positions where at least one of the valves are opened.
  • movement of said switch to a position other than said first position causes light means, such as a light emitting diode, to be energised to warn a user that fuel supply is enabled.
  • light means such as a light emitting diode
  • a further aspect of the invention provides a fuel burning appliance comprising a supply valve as described herein.
  • the fuel is gas.
  • the appliance may be a cooker, a boiler or a heater.
  • the invention is not limited to a particular appliance, a particular fuel or to a particular part of an appliance.
  • the valve comprises a valve body 3, preferably made from aluminium, an inlet 5 connectable to a fuel supply, for example a gas supply, and an outlet 7 connectable to a fuel ignition circuit, for example.
  • a fuel supply for example a gas supply
  • a fuel ignition circuit for example.
  • the inlet 5 and outlet 7 are capable of communicating with each other via three passageways A, B and C.
  • Passageways B and C may be opened or closed by solenoid valves 9 and 11 respectively provided therein.
  • a further output solenoid valve 13 is provided beyond the passageways A, B and C in the outlet 7. The outlet valve 13 is opened or closed to turn on or turn off the supply of fuel to the appliance.
  • passageways A, B and C have different cross-sectional areas and thus allow different fuel flow rates therethrough.
  • passageway C has a larger cross-sectional area than passageway B
  • passageway B has a larger cross-sectional area than passageway A. If the outlet valve should fail then the cross sectional area of passageway A is such that only a small quantity of fuel would escape.
  • closing the outlet valve 13 cuts off the supply of fuel to the appliance.
  • Opening outlet valve 13 enables fuel to be supplied to the appliance through passageway A at a first rate "X”.
  • Opening outlet valve 13 and solenoid 11 enables fuel to be supplied to the appliance through passageways A and B at a second rate "X + Y", larger than the first rate.
  • Opening outlet valve 13 and solenoid 9 enables fuel to be supplied to the appliance through passageways A and C at a third rate "X + Z", larger than the second rate.
  • Opening outlet valve 13 and solenoids 9 and 11 enables fuel to be supplied to the appliance through passageways A, B and C at a fourth rate "X + Y + Z", larger than the third rate.
  • X + Y + Z a fourth rate "X + Y + Z"
  • SOLENOID FLOW RATE Valve 9 Valve 11 Valve 13 1 or 0 1 or 0 0 ZERO 0 0 1 X 0 1 1 X + Y 1 0 1 X + Z 1 1 1 X + Y + Z
  • the solenoid valves are electrically operated and are preferably opened against a resilient bias such as a spring so that, if the power supply should fail or if the solenoid should malfunction, the valves will be biased to their closed position to cut off the supply of fuel to the appliance.
  • a resilient bias such as a spring
  • Figure 2 is a schematic representation of a exemplary circuit for controlling the valve of Figure 1.
  • the circuit 20 comprises power means 22 (preferably DC) and a five-way operating switch 24 which is preferably provided on the outside of the appliance.
  • a light emitting diode may also be provided such that a light is emitted when the switch is in any of positions (ii) to (v), thereby providing a warning to the user that valves are open and fuel is able to flow.
  • the circuit may include a temperature sensor and a controller so that the energisation of the valves may be automatically conducted in order to regulate the temperature of the oven, for example, in the appliance.
  • valve 50 comprises an inlet 52, an outlet 54, a single passageway 56 connecting the inlet to the outlet, a plurality of solenoid valves 58 with valve members 60 moveable into and out of the passageway and an outlet valve 62 for enabling or preventing communication between the inlet and outlet.
  • valve members 60(i) to 60(v) are each bored to provide a channel 64(i) to 64(v) through each member which is of different cross-sectional area to that of the passageway.
  • the cross-sectional areas of the channels decrease across the valve members in a direction from the inlet to the outlet.
  • the members are moveable from a first position clear of the passageway to a second position wherein the bores communicate with the passageway to restrict fuel flow therethrough.
  • the channel 64(i) of an outer valve member 60(i) has a larger cross-sectional area than the channels 64(ii) to 64(v) of the remaining members
  • the channel 64(v) of an inner member 60(v) has a smaller cross-sectional area than the channels 64(i) to 64(iv) of the remaining members 60(i) to 60(iv).
  • the members between the inner and outer members decrease in cross-sectional area in a direction from the outer member to the inner member.
  • the rate of fuel flow may be varied by selectively actuating the valves 60(i) to 60(v) to introduce respective valve members 60(i) to 60(v) into the passageway.
  • the valves 60(i) to 60(v) may be actuated by a circuit similar to that of Figure 2.
  • a switch By operating a switch, a user is able to control which of the valves is in communication with the passageway and thus vary the flow rate through the passageway.
  • the outlet valve is coupled to each of the other valves so that the outlet is automatically open when the switch is operated.
  • the circuit may also include a temperature sensor and a controller so that the energisation of the valves may be automatically conducted in order to regulate the temperature of the oven, for example, in the appliance.
  • the supply valve described herein could be employed in any type of fuel burning appliance, such as a cooker, heater or boiler. If used in a cooker, the valve can be used to control flow rate in an oven, a burner on a cooker hob or a grill.
  • valves could be arranged so that they are openable in isolation from one another - in which case, the passageways would have to be of varying cross-sectional area if it was desired to vary the flow rate.
  • a mixture of valves operable in isolation and valves operable in combination may also be provided.
  • valves have been described as each opening a single passageway, it will be apparent that a valve could be used to open and close a number of passageways communicating with that valve.
  • a pair of passageways communicating with the inlet could both communicate with a valve which is openable to communicate with the outlet.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
EP98304554A 1997-06-13 1998-06-09 Zuführventil für einen Brenner Withdrawn EP0884530A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9712451 1997-06-13
GBGB9712451.5A GB9712451D0 (en) 1997-06-13 1997-06-13 A supply valve for a fuel burning appliance

Publications (1)

Publication Number Publication Date
EP0884530A1 true EP0884530A1 (de) 1998-12-16

Family

ID=10814194

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98304554A Withdrawn EP0884530A1 (de) 1997-06-13 1998-06-09 Zuführventil für einen Brenner

Country Status (2)

Country Link
EP (1) EP0884530A1 (de)
GB (1) GB9712451D0 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011009792A1 (de) * 2009-07-24 2011-01-27 BSH Bosch und Siemens Hausgeräte GmbH Schaltung einer gasventileinheit
WO2015036880A1 (de) * 2013-09-11 2015-03-19 BSH Bosch und Siemens Hausgeräte GmbH Gasbrenneranordnung für eine gaskochmulde, gaskochmulde und gasherd

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8102571A (nl) * 1981-05-26 1982-12-16 Neom Bv Inrichting voor het verhitten van een stromend warmtetransporterend fluidum.
JPS5835320A (ja) * 1981-08-26 1983-03-02 Matsushita Electric Ind Co Ltd 燃焼制御装置
JPS61159028A (ja) * 1985-01-07 1986-07-18 Matsushita Electric Ind Co Ltd 加熱コンロ
JPS6325412A (ja) * 1986-07-17 1988-02-02 Sanyo Electric Co Ltd 流量制御装置
EP0818655A2 (de) * 1996-07-09 1998-01-14 Gaggenau Hausgeräte GmbH Verfahren und Vorrichtung zum Steuern der Flammengrösse gasbetriebener Koch- oder Backgeräte

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8102571A (nl) * 1981-05-26 1982-12-16 Neom Bv Inrichting voor het verhitten van een stromend warmtetransporterend fluidum.
JPS5835320A (ja) * 1981-08-26 1983-03-02 Matsushita Electric Ind Co Ltd 燃焼制御装置
JPS61159028A (ja) * 1985-01-07 1986-07-18 Matsushita Electric Ind Co Ltd 加熱コンロ
JPS6325412A (ja) * 1986-07-17 1988-02-02 Sanyo Electric Co Ltd 流量制御装置
EP0818655A2 (de) * 1996-07-09 1998-01-14 Gaggenau Hausgeräte GmbH Verfahren und Vorrichtung zum Steuern der Flammengrösse gasbetriebener Koch- oder Backgeräte

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 116 (M - 216) 20 May 1983 (1983-05-20) *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 365 (M - 542) 6 December 1986 (1986-12-06) *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 229 (M - 714) 29 June 1988 (1988-06-29) *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011009792A1 (de) * 2009-07-24 2011-01-27 BSH Bosch und Siemens Hausgeräte GmbH Schaltung einer gasventileinheit
CN102472489A (zh) * 2009-07-24 2012-05-23 Bsh博世和西门子家用电器有限公司 气阀单元的切换
CN102472489B (zh) * 2009-07-24 2014-09-24 Bsh博世和西门子家用电器有限公司 气阀单元的切换
EA022147B1 (ru) * 2009-07-24 2015-11-30 Бсх Бош Унд Сименс Хаусгерете Гмбх Переключатель газового клапана
US9513004B2 (en) 2009-07-24 2016-12-06 BSH Hausgeräte GmbH Switch of a gas valve unit
WO2015036880A1 (de) * 2013-09-11 2015-03-19 BSH Bosch und Siemens Hausgeräte GmbH Gasbrenneranordnung für eine gaskochmulde, gaskochmulde und gasherd
CN105518388A (zh) * 2013-09-11 2016-04-20 Bsh家用电器有限公司 用于煤气灶眼的煤气燃烧器装置、煤气灶眼和煤气灶
CN105518388B (zh) * 2013-09-11 2017-10-24 Bsh家用电器有限公司 用于煤气灶眼的煤气燃烧器装置、煤气灶眼和煤气灶

Also Published As

Publication number Publication date
GB9712451D0 (en) 1997-08-13

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