EP2715237A1 - A gas oven with a gas safety valve and method for operating such oven - Google Patents

A gas oven with a gas safety valve and method for operating such oven

Info

Publication number
EP2715237A1
EP2715237A1 EP12732988.6A EP12732988A EP2715237A1 EP 2715237 A1 EP2715237 A1 EP 2715237A1 EP 12732988 A EP12732988 A EP 12732988A EP 2715237 A1 EP2715237 A1 EP 2715237A1
Authority
EP
European Patent Office
Prior art keywords
gas
burner
outlet
valve
safety valve
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Withdrawn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
EP12732988.6A
Other languages
German (de)
French (fr)
Inventor
Sencer GÜRÜ
Orcun BASKAYA
Ramazan Uygun
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2715237A1 publication Critical patent/EP2715237A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F23N5/105—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using electrical or electromechanical means

Definitions

  • the present invention relates to a gas oven whose flame safety is provided by a gas safety valve and where pluralities of burners are controlled by means of only one tap.
  • the invention relates further to a method for operating a gas oven.
  • thermocouple For flame safety, in gas cutting systems, a thermocouple is placed at a distance where the temperature, distributed from the burner for each burner, can be detected.
  • Each thermocouple is connected to the inlets of a magnet valve, which has pluralities of inlets, by means of separate cables.
  • the thermocouples are connected to the valve by means of lines which is equal in number to the total thermocouple number used in the oven.
  • the thermocouples sense the temperature differences formed in the burners, and in case the flame blows out, they control the blocking of the gas inlet by means of the magnet valve.
  • the magnet valve which has only one outlet, acts after being cooled in case the burner blows out, and the magnet valve blocks the gas inlet and thus, it prevents the gas from being distributed to the environment in an uncontrolled manner.
  • the subject matter oven is a gas oven comprising a one-directional valve which directs the gas, provided from a gas inlet, to at least one second outlet or to one first outlet in a selectable manner where each of the outlets is connected to a burner, in order for said gas to be burnt in the burners.
  • This oven comprises a first thermocouple and at least one second thermocouple, connected to each other in a serial manner and positioned at the vicinity of the burners so as to provide heat relation with the burners.
  • thermocouples are connected to a safety valve which can block the gas inlet through the outlet end of the thermocouple. Since the thermocouples are connected in a serial manner, the need for connecting the thermocouples to the valve by means of lines, which are equal in number to the number of thermocouples, is eliminated; and the number of connections realized with the valve is decreased to one. Thus, the material amount which is required for the connection of the thermocouples to the valve is decreased.
  • the burner, to which the first outlet is connected is an upper burner; and the burner, to which the second outlet is connected, is the lower burner.
  • the control button is turned in clockwise or anticlockwise direction, and the lower or the upper burner is ignited.
  • the safety valve used in the subject matter oven is a magnet valve (solenoid valve).
  • the open and the closed position of the valve can be controlled by means of the electrical signal provided by the thermocouple.
  • the oven comprising a main gas outlet which is connected to the first outlet and a second outlet.
  • the gas valve is connected to a control button.
  • the oven comprising a control button which is turnable and configured such that when it is turned to the left or to the right by a user it directs the gas entering through the gas inlet to the first gas outlet or to the second gas outlet.
  • the safety valve is placed inside the gas valve. It is preferred when the safety valve is configured such that when a burner blows out the gas inlet is blocked by the safety valve and the gas which enters into gas valve and which is directed to the gas outlets in order to be distributed to the burner is cut by the safety valve.
  • the oven comprising a switch, which opens and closes a circuit as a result of the temperature data coming from any thermocouples.
  • the switch is configured such that it closes the circuit after gas is directed to one of the gas outlets and after ignition is realized in the burner where gas is directed.
  • the switch is configured such that it opens the circuit and cuts the current and by means of this, it provides the safety valve to be cooled and it provides the spring inside the safety valve to be released and block the gas inlet, when there is a blow out in the burner.
  • Preferred embodiments of the gas oven are preferred embodiments of the method. BRIEF DESCRIPTION OF THE FIGURES
  • the subject matter oven comprises a gas valve 100, at least two burners 200 which are connected to the gas valve 100, at least two thermocouples 300 which are positioned at the vicinity of the burners 200 so as to be one each for each burner 200, a control button 400 which controls to which burner said gas will be transferred for realizing ignition.
  • the gas valve 100 comprises a safety valve 120 which cuts the gas flow in case the gas flow is to be cut; a gas inlet 140, a main gas outlet 160 which is connected to a second outlet 162 and a first outlet 161 .
  • a gas valve 100 which is connected to a control button 500, and the burners 200 to which the gas valve 100 is connected can be seen.
  • the thermocouples 300 are positioned opposite to the burners 200.
  • one of the burners 200 is the first burner 210 which exists at the upper part of the oven.
  • the other burner 200 is the second burner 220 which exists at the bottom part of the oven.
  • a first thermocouple 310 is positioned at the opposite of the first burner 210.
  • a second thermocouple 320 is positioned at the opposite of the second burner 220.
  • the thermocouples 310, 320 are serially connected to each other and they are connected to the safety valve 120 from one end thereof.
  • the safety valve 120 is placed to a position inside the valve 100 / inside the oven so as to be able to block the gas inlet 140 when required.
  • the safety valve 120 blocks the gas inlet 140, and it cuts the gas which enters into the valve 100 and which is directed to the gas outlets 161 or 162 in order to be distributed to the burners 210 or 220.
  • the first gas outlet 161 is connected to the first burner 210, and the second gas outlet 162 is connected to the second burner 220.
  • the control button 400 is turned to the left or to the right by the user, and it directs the gas, entering through the gas inlet 140, to the first gas outlet 161 or to the second gas outlet 162.
  • thermocouples 310 and 320 the schematic view of the circuit schema to which the thermocouples 310 and 320 are connected can be seen.
  • the thermocouples 310, 320 and the safety valve 120 are connected in a serial manner.
  • the switch 500 opens and closes the circuit as a result of the temperature data coming from any thermocouple 310 or 320.
  • the switch 500 closes the circuit as a result of the temperature data coming from the thermocouple 310 or 320 which corresponds to the burner 210 or 220 where there is flame.
  • the switch 500 opens the circuit and it cuts the current and by means of this, it provides the safety valve 120 to be cooled and it provides the spring inside the safety valve 120 to be released and it provides the valve 120 to block the gas inlet.
  • the switch 500 opens the circuit and it cuts the current and by means of this, it provides the safety valve 120 to be cooled and it provides the spring inside the safety valve 120 to be released and it provides the valve 120 to block the gas inlet.
  • FIG 1 in an application of the subject matter invention, four burners 200 which are in connection with a gas valve 100 can be seen and a thermocouple 300 can be seen which is in contact with said burner 200 so as to correspond to one each burner 200.
  • the thermocouples 300 are connected to each other in a serial manner and they are connected to the inlet of a safety valve 120.

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)
  • Control Of Combustion (AREA)

Abstract

The present invention relates to a gas oven comprising a one-directional valve (100) which directs the gas, provided from a gas inlet (140), to one of the gas outlets (161 or 162) in a selectable manner, in order for said gas to be burnt in said burners (210, 220); and a safety valve which controls the gas, entering into the valve (100), by blocking the gas inlet (140) when required.

Description

A GAS OVEN WITH A GAS SAFETY VALVE AND METHOD FOR OPERATING SUCH OVEN
TECHNICAL FIELD
The present invention relates to a gas oven whose flame safety is provided by a gas safety valve and where pluralities of burners are controlled by means of only one tap. The invention relates further to a method for operating a gas oven.
KNOWN STATE OF THE ART
In the known state of the art, in ovens, whose burners are not ignited simultaneously and where gas is provided to more than one burner by using only one tap, there are gas cutting systems for flame safety. These systems cut the gas arriving at the burner in case of a blow out in the burner because of any reason.
For flame safety, in gas cutting systems, a thermocouple is placed at a distance where the temperature, distributed from the burner for each burner, can be detected. Each thermocouple is connected to the inlets of a magnet valve, which has pluralities of inlets, by means of separate cables. In other words, the thermocouples are connected to the valve by means of lines which is equal in number to the total thermocouple number used in the oven. The thermocouples sense the temperature differences formed in the burners, and in case the flame blows out, they control the blocking of the gas inlet by means of the magnet valve. The magnet valve, which has only one outlet, acts after being cooled in case the burner blows out, and the magnet valve blocks the gas inlet and thus, it prevents the gas from being distributed to the environment in an uncontrolled manner. BRIEF DESCRIPTION OF THE INVENTION
The object of the subject matter invention is to decrease the production costs of flame safety gas cutting systems in the ovens where pluralities of burners are controlled by means of only one tap. In order to realize the abovementioned object, the subject matter oven is a gas oven comprising a one-directional valve which directs the gas, provided from a gas inlet, to at least one second outlet or to one first outlet in a selectable manner where each of the outlets is connected to a burner, in order for said gas to be burnt in the burners. This oven comprises a first thermocouple and at least one second thermocouple, connected to each other in a serial manner and positioned at the vicinity of the burners so as to provide heat relation with the burners. Said thermocouples are connected to a safety valve which can block the gas inlet through the outlet end of the thermocouple. Since the thermocouples are connected in a serial manner, the need for connecting the thermocouples to the valve by means of lines, which are equal in number to the number of thermocouples, is eliminated; and the number of connections realized with the valve is decreased to one. Thus, the material amount which is required for the connection of the thermocouples to the valve is decreased. In an application of the subject matter oven, the burner, to which the first outlet is connected, is an upper burner; and the burner, to which the second outlet is connected, is the lower burner. In this application, the control button is turned in clockwise or anticlockwise direction, and the lower or the upper burner is ignited. In a preferred application of the subject matter invention, the safety valve used in the subject matter oven is a magnet valve (solenoid valve). Thus, the open and the closed position of the valve can be controlled by means of the electrical signal provided by the thermocouple. In preferred embodiment the oven comprising a main gas outlet which is connected to the first outlet and a second outlet.
It is preferred when the gas valve is connected to a control button. In a preferred embodiment the oven comprising a control button which is turnable and configured such that when it is turned to the left or to the right by a user it directs the gas entering through the gas inlet to the first gas outlet or to the second gas outlet.
Preferably the safety valve is placed inside the gas valve. It is preferred when the safety valve is configured such that when a burner blows out the gas inlet is blocked by the safety valve and the gas which enters into gas valve and which is directed to the gas outlets in order to be distributed to the burner is cut by the safety valve.
In a preferred embodiment the oven comprising a switch, which opens and closes a circuit as a result of the temperature data coming from any thermocouples. Preferably the switch is configured such that it closes the circuit after gas is directed to one of the gas outlets and after ignition is realized in the burner where gas is directed.
Preferably the switch is configured such that it opens the circuit and cuts the current and by means of this, it provides the safety valve to be cooled and it provides the spring inside the safety valve to be released and block the gas inlet, when there is a blow out in the burner.
With an inventive method for operating a gas oven comprising a one-directional valve which directs the gas provided from a gas inlet to at least one second outlet or to one first outlet in a selectable manner, each of the outlets is connected to a burner, in order for said gas to be burnt in said burners. It is provided connecting a first thermocouple and at least one second thermocouple to each other in a serial manner and positioning the thermocouples at the vicinity of the burners so as to provide heat relation with the burners, and connecting said thermocouples to a safety valve which can block the gas inlet through the outlet end of the thermocouple.
Preferred embodiments of the gas oven are preferred embodiments of the method. BRIEF DESCRIPTION OF THE FIGURES
The additional characteristics and advantages of the subject matter invention will be obtained from the exemplary embodiments giving reference to the accompanied figures. In Figure 1 , the schematic diagram of the gas cutting system used in the subject matter oven is given.
In Figure 2, the schematic view of the electrical circuit to which the thermocouples are connected in the subject matter oven is given.
In Figure 3, the schematic view of an application of the subject matter oven is given. THE DETAILED DESCRIPTION OF THE INVENTION
The subject matter oven comprises a gas valve 100, at least two burners 200 which are connected to the gas valve 100, at least two thermocouples 300 which are positioned at the vicinity of the burners 200 so as to be one each for each burner 200, a control button 400 which controls to which burner said gas will be transferred for realizing ignition.
The gas valve 100 comprises a safety valve 120 which cuts the gas flow in case the gas flow is to be cut; a gas inlet 140, a main gas outlet 160 which is connected to a second outlet 162 and a first outlet 161 . In Figure 1 , a gas valve 100 which is connected to a control button 500, and the burners 200 to which the gas valve 100 is connected can be seen. In order to sense the temperature of the burners 200, the thermocouples 300 are positioned opposite to the burners 200. In the application existing in the figure, one of the burners 200 is the first burner 210 which exists at the upper part of the oven. The other burner 200 is the second burner 220 which exists at the bottom part of the oven. A first thermocouple 310 is positioned at the opposite of the first burner 210. A second thermocouple 320 is positioned at the opposite of the second burner 220. The thermocouples 310, 320 are serially connected to each other and they are connected to the safety valve 120 from one end thereof. The safety valve 120 is placed to a position inside the valve 100 / inside the oven so as to be able to block the gas inlet 140 when required. When the burner 210 or 220 blows out, the safety valve 120 blocks the gas inlet 140, and it cuts the gas which enters into the valve 100 and which is directed to the gas outlets 161 or 162 in order to be distributed to the burners 210 or 220. The first gas outlet 161 is connected to the first burner 210, and the second gas outlet 162 is connected to the second burner 220. The control button 400 is turned to the left or to the right by the user, and it directs the gas, entering through the gas inlet 140, to the first gas outlet 161 or to the second gas outlet 162.
In Figures 2 and 3, the schematic view of the circuit schema to which the thermocouples 310 and 320 are connected can be seen. In the circuit, the thermocouples 310, 320 and the safety valve 120 are connected in a serial manner. The switch 500 opens and closes the circuit as a result of the temperature data coming from any thermocouple 310 or 320. After the control button 400 is rotated in one direction and after the gas is directed to one of the gas outlets 161 or 162 and after ignition is realized in the burner 210 or 220 where gas is directed, the switch 500 closes the circuit as a result of the temperature data coming from the thermocouple 310 or 320 which corresponds to the burner 210 or 220 where there is flame. In case there is a blow out in the burner 210 or 220, which is ignited and where there is flame, because of any reason, the switch 500 opens the circuit and it cuts the current and by means of this, it provides the safety valve 120 to be cooled and it provides the spring inside the safety valve 120 to be released and it provides the valve 120 to block the gas inlet. In Figure 1 , in an application of the subject matter invention, four burners 200 which are in connection with a gas valve 100 can be seen and a thermocouple 300 can be seen which is in contact with said burner 200 so as to correspond to one each burner 200. The thermocouples 300 are connected to each other in a serial manner and they are connected to the inlet of a safety valve 120.
REFERENCE NUMBERS
100 Valve
120 Safety Valve
140 Gas inlet
160 Main outlet
161 First outlet 162 Second outlet
200 Burner
210 First burner
220 Second burner
300 Thermocouple
310 First thermocouple 320 Second thermocouple 400 Control Button
500 Switch

Claims

A gas oven comprising a one-directional valve (100) which directs the gas, provided from a gas inlet (140), to at least one second outlet (162) or to one first outlet (161 ) in a selectable manner where each of the outlets (161 , 162) is connected to a burner (210, 220), in order for said gas to be burnt in said burners (210, 220), characterized by comprising a first thermocouple (310) and at least one second thermocouple (320), connected to each other in a serial manner and positioned at the vicinity of the burners (210, 220) so as to provide heat relation with the burners (210, 220), where said thermocouples (310, 320) are connected to a safety valve (120) which can block the gas inlet (140) through the outlet end of the thermocouple (310, 320).
A gas oven according to claim 1 , wherein the burner, to which the first outlet (161 ) is connected, is an upper burner (210); and the burner, to which the second outlet (162) is connected, is the lower burner (220).
A gas oven according to claim 1 or 2, wherein the safety valve (120) used in the subject matter oven is a magnet valve.
A gas oven according to any of the preceding claims 1 to 3, wherein a main gas outlet (160) which is connected to the first outlet (161 ) and a second outlet (162).
A gas oven according to any of the preceding claims 1 to 4, wherein the gas valve (100) is connected to a control button (400).
A gas oven according to any of the preceding claims 1 to 5, wherein a control button (400) is turnable and configured such that when it is turned to the left or to the right by a user it directs the gas entering through the gas inlet (140) to the first gas outlet (161 ) or to the second gas outlet (162).
A gas oven according to any of the preceding claims 1 to 6, wherein the safety valve (120) is placed inside the gas valve (100).
8. A gas oven according to any of the preceding claims 1 to 7, wherein the safety valve (120) is configured such that when a burner (210, 220) blows out the gas inlet (140) is blocked by the safety valve (120) and the gas which enters into gas valve (100) and which is directed to the gas outlets (161 , 162) in order to be distributed to the burner (210, 220) is cut by the safety valve (120).
9. A gas oven according to any of the preceding claims 1 to 8, comprising a switch (500), which opens and closes a circuit as a result of the temperature data coming from any thermocouples (310, 320).
10. A gas oven according to claim 9, wherein the switch (500) is configured such that it closes the circuit after gas is directed to one of the gas outlets (161 , 162) and after ignition is realized in the burner (210, 220) where gas is directed.
1 1. A gas oven according to claim 9 or 10, wherein the switch (500) is configured such that it opens the circuit and cuts the current and by means of this, it provides the safety valve (120) to be cooled and it provides the spring inside the safety valve (120) to be released and block the gas inlet (140), when there is a blow out in the burner (210, 220).
12. A method for operating a gas oven comprising a one-directional valve (100) which directs the gas provided from a gas inlet (140) to at least one second outlet (162) or to one first outlet (161 ) in a selectable manner where each of the outlets (161 , 162) is connected to a burner (210, 220), in order for said gas to be burnt in said burners (210, 220), characterized by connecting a first thermocouple (310) and at least one second thermocouple (320) to each other in a serial manner and positioning the thermocouples (310, 320) at the vicinity of the burners (210, 220) so as to provide heat relation with the burners (210, 220), and connecting said thermocouples (310, 320) to a safety valve (120) which can block the gas inlet (140) through the outlet end of the thermocouple (310, 320).
EP12732988.6A 2011-05-30 2012-05-29 A gas oven with a gas safety valve and method for operating such oven Withdrawn EP2715237A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2011/05223A TR201105223A2 (en) 2011-05-30 2011-05-30 A gas oven with a gas safety valve.
PCT/EP2012/060048 WO2012163914A1 (en) 2011-05-30 2012-05-29 A gas oven with a gas safety valve and method for operating such oven

Publications (1)

Publication Number Publication Date
EP2715237A1 true EP2715237A1 (en) 2014-04-09

Family

ID=46466425

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12732988.6A Withdrawn EP2715237A1 (en) 2011-05-30 2012-05-29 A gas oven with a gas safety valve and method for operating such oven

Country Status (3)

Country Link
EP (1) EP2715237A1 (en)
TR (1) TR201105223A2 (en)
WO (1) WO2012163914A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3405869A (en) * 1967-03-30 1968-10-15 Itt Range control system
JPS5531241A (en) * 1978-08-24 1980-03-05 Matsushita Electric Ind Co Ltd Safety device for gas combustion apparatus
DE3703916A1 (en) * 1987-02-09 1988-08-18 Bosch Siemens Hausgeraete CONTROL AND CONTROL DEVICE FOR A HOUSEHOLD GAS BAKING OVEN WITH ADDITIONAL GRILL BURNER
CA2218968A1 (en) * 1995-08-18 1999-04-17 James Rollins Maughan Gas oven fuel control with proof of ignition

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2012163914A1 *

Also Published As

Publication number Publication date
TR201105223A2 (en) 2012-12-21
WO2012163914A1 (en) 2012-12-06

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