EP0807789A1 - Regeleinrichtung für eine Vielfalt von Brennern eines Haushaltgaskochgeräts - Google Patents

Regeleinrichtung für eine Vielfalt von Brennern eines Haushaltgaskochgeräts Download PDF

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Publication number
EP0807789A1
EP0807789A1 EP97107904A EP97107904A EP0807789A1 EP 0807789 A1 EP0807789 A1 EP 0807789A1 EP 97107904 A EP97107904 A EP 97107904A EP 97107904 A EP97107904 A EP 97107904A EP 0807789 A1 EP0807789 A1 EP 0807789A1
Authority
EP
European Patent Office
Prior art keywords
gas
burners
burner
oven
food cooking
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Withdrawn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
EP97107904A
Other languages
English (en)
French (fr)
Inventor
Mauro Meloncelli
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.)
Whirlpool EMEA SpA
Original Assignee
Merloni Elettrodomestici SpA
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 Merloni Elettrodomestici SpA filed Critical Merloni Elettrodomestici SpA
Priority to DE29723760U priority Critical patent/DE29723760U1/de
Publication of EP0807789A1 publication Critical patent/EP0807789A1/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Withdrawn legal-status Critical Current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
    • F23N1/002—Regulating fuel supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/12—Arrangement or mounting of control or safety devices
    • F24C3/126—Arrangement or mounting of control or safety devices on ranges
    • F24C3/128—Arrangement or mounting of control or safety devices on ranges in baking ovens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/36—Spark ignition, e.g. by means of a high voltage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/16—Flame sensors using two or more of the same types of flame sensor
    • 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
    • F23N2235/18—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
    • F23N2237/02—Controlling two or more burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/08—Household apparatus
    • 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
    • F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods

Definitions

  • the present invention refers to a gas-fired household food baking oven, comprising at least two burners which may be gas fired by control means, specifically an upper burner and a lower burner, said oven fitted with a combustion control device for said two burners, having at least a gas intercepting device to said burners, a flame detecting probe for each burner, a spark plug for each burner and a control unit.
  • the control method of the actual gas combustion in a burner of a cooking appliance through an electronic unit is known.
  • the unit does not receive any signal from the probe and will remove voltage from the coil of the solenoid valve; the latter will thus go back to its closed position and stop the gas flow.
  • two solenoid valves connected in series to each other may be fitted instead of one.
  • the devices according to the known state of the art can possibly have several burners ignited simultaneously, such as for instance the upper and lower burners of an oven, each one of them needs to be equipped with its own unit; otherwise the activation signal coming from one flame detecting probe alone would be sufficient, in the instance of one unit alone, to allow a gas flow also to those burners where no ignition process has taken place, with a subsequent emission of non exhaust gas in the environment.
  • Such a system should necessarily provide a control unit for each burner, e.g. one associated with the oven burner and another associated with the grill burner.
  • This invention is based on the consideration that, due to convenient and practical reasons in the use of the appliance, there is a spreading use and manufacture of cooking ovens which are able to operate with only one burner during the cooking process, i.e. to optionally supply either the oven or the grill alone.
  • a gas fired household oven for food cooking comprising at least two burners, specifically an upper burner and a lower burner, which may be supplied with gas through command means, said oven comprising a combustion control device of said two burners, having at least a gas flow intercepting device to said burners, a flame detecting probe for each burner, a spark plug for each burner and a control unit, characterized in that said two probes and said two ignition spark plugs are connected to a single control unit, said command means comprises a flow deviating device capable of alternatively supply gas either to only one or the other of said two burners and that the flow intercepting device is located upstream of said deviating device.
  • reference number 1 indicates an oven lower, or bottom, burner
  • number 2 indicates an upper burner, or grill, of the same oven
  • number 3 indicates a manual deviation valve
  • Said deviation valve 3 is integrated cock 3 having two alternative two-ways, i.e. when the gas flow is open to the lower oven burner, the gas flow to the grill will remain automatically closed, whereas the inverse situation occurs when the grill is supplied.
  • Said deviation valve 3 is not described in this context, as being known as such and normally used for low-cost cooking appliances without a control system.
  • Number 4 indicates a safety valve for intercepting the gas flow from the network, shown with letter R, whereas number 5 indicates an eventual second safety valve for intercepting the gas flow, which may be connected in series with the solenoid valve 4. Both the solenoid valves 4 and 5 are installed upstream of the deviation valve 3.
  • Said solenoid valves 4 and 5 are both electrically powered and controlled by an electronic control unit indicated with number 8.
  • Said unit 8 is based on a substantially known technique; however, with respect to the prior art, it is featured by a signal input for two detecting probes and a supply output for two spark plugs, respectively.
  • Numbers 6 and 6' indicate some ignition spark plugs feed by the unit 8
  • numbers 7 and 7' indicate some ionization detecting probes for exhaust gases.
  • the device operates as follows:
  • the gas fired household food baking oven equipped with a control device for a plurality of burners has the advantage of having only one control unit for several burners, resulting in a cost reduction and an unchanged safety, if compared to the known art.
  • the ignition and blow-out procedure may be easily automated, providing for a servo-controlled cock rotation by the control unit or replacing the cock with solenoid valves.
  • the ignition or blow-out command may be started by a thermostatic control or a timer, or both of them in a cascade connection.
  • the unit can be programmed to repeat the ignition procedure one or more times, should the burner not ignite on first trial; if the operation has no satisfactory result, the system will stop the procedure and give an error signal after a predetermined number of repeats.

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)
  • Feeding And Controlling Fuel (AREA)
EP97107904A 1996-05-17 1997-05-15 Regeleinrichtung für eine Vielfalt von Brennern eines Haushaltgaskochgeräts Withdrawn EP0807789A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29723760U DE29723760U1 (de) 1996-05-17 1997-05-15 Vorrichtung zum Steuern mehrerer Brenner eines Haushaltskochgerätes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1996TO000110U IT239742Y1 (it) 1996-05-17 1996-05-17 Dispositivo per il controllo di piu' bruciatori di un apparecchio dicottura a gas per uso domestico.
ITTO960110U 1996-05-17

Publications (1)

Publication Number Publication Date
EP0807789A1 true EP0807789A1 (de) 1997-11-19

Family

ID=11414271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97107904A Withdrawn EP0807789A1 (de) 1996-05-17 1997-05-15 Regeleinrichtung für eine Vielfalt von Brennern eines Haushaltgaskochgeräts

Country Status (2)

Country Link
EP (1) EP0807789A1 (de)
IT (1) IT239742Y1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20110776A1 (it) * 2011-08-25 2013-02-26 Indesit Co Spa Apparecchio di cottura a gas con sicurezza
WO2015113638A1 (en) * 2014-02-03 2015-08-06 Electrolux Appliances Aktiebolag Gas burner assembly and gas cooking appliance
EP3257409A4 (de) * 2015-02-12 2018-09-12 Guangdong Midea Kitchen Appliances Ofen
CN115200035A (zh) * 2021-07-20 2022-10-18 中国科学院沈阳自动化研究所 基于调制解调技术的离子式火焰检测系统及其方法
EP4493858A4 (de) * 2022-03-15 2025-12-24 Femas Metal San Ve Tic A S Gasofen mit zwei brennern

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3476315A (en) * 1967-11-15 1969-11-04 Itt Control system for double-burner single-cavity oven
GB1293037A (en) * 1969-09-03 1972-10-18 Landis & Gyr Ag Arrangements for monitoring a plurality of flame locations simultaneously
GB2198520A (en) * 1986-12-01 1988-06-15 Bosch Siemens Hausgeraete Gas oven
GB2200739A (en) * 1987-02-09 1988-08-10 Bosch Siemens Hausgeraete Gas oven
US5161963A (en) * 1989-09-05 1992-11-10 Channel Products, Inc. Multi-burner gas control apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3476315A (en) * 1967-11-15 1969-11-04 Itt Control system for double-burner single-cavity oven
GB1293037A (en) * 1969-09-03 1972-10-18 Landis & Gyr Ag Arrangements for monitoring a plurality of flame locations simultaneously
GB2198520A (en) * 1986-12-01 1988-06-15 Bosch Siemens Hausgeraete Gas oven
GB2200739A (en) * 1987-02-09 1988-08-10 Bosch Siemens Hausgeraete Gas oven
US5161963A (en) * 1989-09-05 1992-11-10 Channel Products, Inc. Multi-burner gas control apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20110776A1 (it) * 2011-08-25 2013-02-26 Indesit Co Spa Apparecchio di cottura a gas con sicurezza
WO2015113638A1 (en) * 2014-02-03 2015-08-06 Electrolux Appliances Aktiebolag Gas burner assembly and gas cooking appliance
EP3257409A4 (de) * 2015-02-12 2018-09-12 Guangdong Midea Kitchen Appliances Ofen
US10598387B2 (en) 2015-02-12 2020-03-24 Guangdong Midea Kitchen Appliances Manufacturing Co., Ltd. Oven
CN115200035A (zh) * 2021-07-20 2022-10-18 中国科学院沈阳自动化研究所 基于调制解调技术的离子式火焰检测系统及其方法
CN115200035B (zh) * 2021-07-20 2023-07-14 中国科学院沈阳自动化研究所 基于调制解调技术的离子式火焰检测系统及其方法
EP4493858A4 (de) * 2022-03-15 2025-12-24 Femas Metal San Ve Tic A S Gasofen mit zwei brennern

Also Published As

Publication number Publication date
ITTO960110V0 (it) 1996-05-17
ITTO960110U1 (it) 1997-11-17
IT239742Y1 (it) 2001-03-13

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