[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

EP1848928A2 - Control assembly for gas ovens - Google Patents

Control assembly for gas ovens

Info

Publication number
EP1848928A2
EP1848928A2 EP06727282A EP06727282A EP1848928A2 EP 1848928 A2 EP1848928 A2 EP 1848928A2 EP 06727282 A EP06727282 A EP 06727282A EP 06727282 A EP06727282 A EP 06727282A EP 1848928 A2 EP1848928 A2 EP 1848928A2
Authority
EP
European Patent Office
Prior art keywords
duct
control assembly
gas
flow rate
selecting means
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
EP06727282A
Other languages
German (de)
French (fr)
Other versions
EP1848928B1 (en
Inventor
Carlo Amati
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau 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 EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Priority to PL06727282T priority Critical patent/PL1848928T3/en
Publication of EP1848928A2 publication Critical patent/EP1848928A2/en
Application granted granted Critical
Publication of EP1848928B1 publication Critical patent/EP1848928B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGESĀ ; 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
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/002—Gaseous fuel
    • F23K5/007—Details
    • 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
    • F23N2235/24—Valve details
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2237/00—Controlling
    • F23N2237/10—High or low fire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/08—Household apparatus

Definitions

  • the present invention relates to a control assembly for gas ovens, in particular for gas oven burners with a system for minimum adjustment of the oven.
  • a thermostat carries out temperature measurement within the oven and when this temperature reaches a predetermined value the gas flow rate to the burner is reduced. Consequently, the oxidation-reduction reaction within the burner takes place with a reduced fuel supply, leading to a decrease in the amount of thermal energy generated and therefore to temperature lowering within the oven.
  • the temperature within the oven becomes stable around a value given by the balance between the energy generated by the burner and the energy transferred by the oven to the surrounding atmosphere .
  • the known-art ovens take advantage of control assemblies substantially consisting of a large number of valves and several pneumatic circuits.
  • a valve is operatively associated with a duct having an inlet and an outlet for the combustible gas, while the minimum gas flow rate is obtained through an independent circuit comprising another valve associated with another duct having a gas outlet and a gas inlet.
  • valves controlling the maximum and minimum flow rates are open and the gas reaches the burner.
  • the maximum-flow rate valve closes while the minimum- flow rate valve keeps open.
  • the minimum-flow rate duct has suitable sizes to enable passage of a predetermined gas amount, establishment of these sizes being carried out on the passage orifice of the valve or by providing a narrowing portion upstream or downstream of the valve.
  • this establishment of sizes is carried out on a rod or pin through which the gas is forced to pass when the control assembly is in a minimum-flow rate configuration.
  • the passage section is univocally determined by an orifice present in the pin.
  • the combustible gas is urged to pass through the orifice which determines the gas flow rate delivered to the burner.
  • control assemblies for gas ovens of the known art can be improved under different points of view.
  • control assemblies of the known art are bulky, of reduced compactness and are made up of several structurally independent bodies.
  • the technical task underlying the present invention is to devise a control assembly for gas ovens in which change of the type of combustible gas used is made possible.
  • the present invention ' also aims at devising a control assembly for gas ovens which is compact, of reduced bulkiness and easy maintenance.
  • control assembly for gas ovens characterised in that it comprises one or more of the technical solutions claimed in the appended claims.
  • Fig. 1 is a section view of the control assembly for gas ovens in accordance with the present invention
  • Fig. 2 is a side view of a detail of the control assembly seen in Fig. 1;
  • FIG. 3 is a perspective view of the detail in Fig. 2;
  • Fig. 4 is a perspective view of the control assembly seen in Fig. 1 with some parts removed for better view of others.
  • control assembly for gas ovens has been identified as a whole with reference numeral 1.
  • the control assembly for gas ovens 1 comprises a valve body 2, an inlet station 3 and an outlet station 4 for the combustible gas.
  • the inlet and outlet stations 3 and 4 are physically connected by connecting means 5 consisting of a main duct 9.
  • the control assembly 1 further comprises at least one valve 6 operatively active on the main duct 9.
  • the control assembly 1 comprises selecting means 8 to select a type of combustible gas, which means is operatively active on the main duct 9.
  • the control assembly further comprises at least two valves 6, 7 connected to each other in parallel through the main duct 9. More particularly, the main duct 9 starts from the gas inlet station 3, meets the first valve 6 and the second valve 7 and ultimately reaches the outlet station 4. A branch 10 of the main duct leads off from one of the two valves, in particular the first one 6, and it joins the main duct 9 close to the outlet station 4, thus defining the duct of minimum gas flow rate.
  • the selecting means 8 of the type of combustible gas is the selecting means 8 of the type of combustible gas; in this way a minimum-flow rate duct is defined while the main-duct 9 section operatively concerned with the other valve 7 defines a maximum-flow rate duct.
  • the selecting means 8 interferes with the main duct 9 at least partly, in particular with the duct section 10.
  • Said section 10 is therefore divided into two duct halves 12 and 13, in particular upstream of the selecting means 8; more specifically, defined between the valve 6 and the selecting means 8 is a gas delivery duct half 12, and a gas discharge duct half 13 is defined downstream of the selecting means 8, more particularly between the valve 6 and the gas outlet station 4.
  • valve 6 acts on the duct section 10 opening and closing it and in any case leaving the main duct 9 always open between the two valves 6 and 7.
  • Valve 7 opens and closes the connection between the valve 7 itself and the outlet station 4 and defines the duct of maximum gas flow rate.
  • the selecting means 8 comprises a peg 11 that, as viewed from Figs. 2 and 3, includes a head 14 which, at the upper part thereof, has a substantially frustoconical portion 15 formed with a through hole 16 parallel to its symmetry axis and, at the lower part thereof, has a substantially cylindrical portion 17 formed with a through hole 18 parallel to its symmetry axis .
  • the frustoconical 15 and cylindrical 17 portions are connected to each other in such a manner that the two holes are aligned and in communication.
  • cylindrical portion 17 and frustoconical portion 15 are of one piece construction but they can also be two distinct parts linked together.
  • the substantially cylindrical portion 17 comprises a plurality of radial holes 19 of different diameters. Holes 19 extend until they reach the through hole 18 of the cylindrical portion.
  • the holes 19 of different diameters that, as said, are part of the selecting means 8 are susceptible of alternately facing the delivery duct half 12 and communicating with the discharge duct half 13; in this way a first union section 20 is defined which enables the gas to pass from the delivery duct half 12 to the discharge duct half 13.
  • the discharge duct half 13 comprises a seat 21 the shape of which matches that of the frustoconical portion 15. There is an at least partial engagement of the frustoconical portion 15 in the seat 21, so that second union sections 22 are defined between the delivery and discharge duct halves.
  • the peg 11 further comprises a base 23 for the head 14.
  • this coupling is of the slidable and rotatable type, i.e. the base can slide and simultaneously turn within the valve body 2, enabling the peg 11 to move forward and rotate.
  • This coupling obtained for example by means of a thread on a preferably cylindrical base 23 and a corresponding thread on the portion of the valve body 2 housing the base itself (screw-nut screw coupling) , enables the frustoconical portion 15 to engage the seat 21 conforming in shape to the latter, in an adjustable manner.
  • coupling between base 23 and valve body 2 takes place only rotatably.
  • the second union section 22 has a defined area which is unmodifiable, while the area of the first union section 20 can be adjusted through rotation of the peg that alternately on the delivery duct half 12 faces holes 19 of different sizes.
  • the last-mentioned type of coupling between the base 23 of peg 11 and the valve body 2 is obtained by a bayonet fitting, for example.
  • the control assembly further comprises another valve 24 connected in parallel with the two valves 6 and 7.
  • valve 24 is connected to valve 7 by a secondary duct 25.
  • the secondary duct after interposition of valve 24, goes on and is connected to another gas outlet station 26 that is independent of the outlet station 4.
  • control assembly 1 is provided with a main valve 27 operatively connected to the main, duct 9, downstream of the gas inlet station 3 and upstream of valves 6, 7 and 24.
  • All or part of the mentioned valves can be solenoid valves operated by a thermostat as shown in the following.
  • valve body 2 is an enbloc piece housing the inlet station 3, outlet station 4, main duct 9 and selecting means 8.
  • the enbloc valve body 2 comprises seats 28 to house the valves 6, 7, 24 and 27, seats 29 to connect the users to the gas outlet station 4 and one seat 30 to connect one delivery duct to the gas inlet station
  • the combustible gas enters the inlet station 3 and through the main duct 9 said gas reaches valves 6 and 7 which are open so that the gas can reach the outlet station 4. In this manner the maximum gas flow rate is ensured.
  • a thermostat causes release of the solenoid valve 7 so that it is closed. Therefore passage of gas only occurs in the duct section 10, and thus in the delivery duct half 12, and reaches peg 11.
  • the hole 19 facing the last-mentioned duct possibly in co-operation with the second union section 22, enables passage of gas into the discharge duct half 13 that in turn feeds the end portion of the main duct 9.
  • Valve 24 can be usefully employed to supply a grill; in fact this valve is not part either of the maximum- flow rate circuit or of the minimum-flow rate circuit .
  • control assembly for gas ovens in accordance with the present invention enables achievement of the above mentioned aims.
  • the type of gas to be used can be selected by merely rotating the peg in a suitable manner within the peg seat, without being necessarily obliged to resort to the aid of a qualified technical person and to dismantle the control assembly, not even partly.
  • control assembly due to the reduced number of its constituent elements (the control assembly contemplates a single inlet station for the combustible gas and two valves at most, to adjust the gas flow rate) , allows all the components to be housed in a single body or valve body, thereby ensuring a great compactness of the whole assembly as well as easy maintenance of same.

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 control assembly for gas ovens comprises a valve body (2), an inlet station (3) for the combustible gas, an outlet station (4) for the combustible gas, and a main duct (9) connecting the gas inlet station (3) to the gas outlet station (4). The control assembly (1) further comprises selecting means (8) for selection of the type of combustible gas to be used.

Description

CONTROL ASSEMBLY FOR GAS OVENS
D e s c r i p t i o n
The present invention relates to a control assembly for gas ovens, in particular for gas oven burners with a system for minimum adjustment of the oven.
Usually, in gas ovens of this type, a thermostat carries out temperature measurement within the oven and when this temperature reaches a predetermined value the gas flow rate to the burner is reduced. Consequently, the oxidation-reduction reaction within the burner takes place with a reduced fuel supply, leading to a decrease in the amount of thermal energy generated and therefore to temperature lowering within the oven.
In fact, due to the fact that the oven is not an adiabatic system, the temperature within the oven becomes stable around a value given by the balance between the energy generated by the burner and the energy transferred by the oven to the surrounding atmosphere .
To put the above described process into practice, the known-art ovens take advantage of control assemblies substantially consisting of a large number of valves and several pneumatic circuits. In particular, in order to be able to ensure the maximum fuel flow rate, a valve is operatively associated with a duct having an inlet and an outlet for the combustible gas, while the minimum gas flow rate is obtained through an independent circuit comprising another valve associated with another duct having a gas outlet and a gas inlet. In this manner, when the oven is switched on, 'the - ? -
valves controlling the maximum and minimum flow rates are open and the gas reaches the burner.
When the burner reaches the preestablished temperature, the maximum-flow rate valve closes while the minimum- flow rate valve keeps open.
Obviously, the minimum-flow rate duct has suitable sizes to enable passage of a predetermined gas amount, establishment of these sizes being carried out on the passage orifice of the valve or by providing a narrowing portion upstream or downstream of the valve.
In some control assemblies, this establishment of sizes is carried out on a rod or pin through which the gas is forced to pass when the control assembly is in a minimum-flow rate configuration. The passage section is univocally determined by an orifice present in the pin.
In this way, the combustible gas is urged to pass through the orifice which determines the gas flow rate delivered to the burner.
The Applicant has found that the control assemblies for gas ovens of the known art can be improved under different points of view.
In fact, sometimes it is necessary to supply the oven with combustible gas different from the planned gas.
In control assemblies of the known art change of the type of combustible gas used for the oxidation- reduction reaction in the burner is not possible without at least partly dismantling or even fully replacing the assembly itself. This hindrance results from the fact that when the type of combustible gas is changed, even if some thermodynamic properties remain almost unchanged, there is a change in the physical properties of the gas such as the heat value for example (pressure and temperature remaining the same) .
In order to be able to ensure the same supply of thermal energy in all cases, it is therefore necessary to change the gas flow rate to the burner. This requirement is particularly compulsory as regards the minimum gas flow rate.
In fact, to be sure that the air-gas mixture remains within the inflammability limits, it is not possible for the minimum gas flow rate to take any values.
Therefore the passage section of the gas in the minimum flow rate duct is required to be changed. In the devices of the known art, to operate a change in the type of combustible gas it is necessary to change the type of valve or the section of the narrowing portion of the duct, or the pin, which will involve partial dismantling of the control assembly, which operation is to be carried out by qualified technical staff.
Another drawback of the control assemblies of the known art resides in that the control assemblies of known type are bulky, of reduced compactness and are made up of several structurally independent bodies.
In this context, the technical task underlying the present invention is to devise a control assembly for gas ovens in which change of the type of combustible gas used is made possible. - A -
The present invention' also aims at devising a control assembly for gas ovens which is compact, of reduced bulkiness and easy maintenance.
The technical task and the aim specified are substantially achieved by a control assembly for gas ovens characterised in that it comprises one or more of the technical solutions claimed in the appended claims.
The description of a preferred but not exclusive embodiment of a control assembly for gas ovens is now given by way of non-limiting example, and illustrated in the accompanying drawings, in which:
- Fig. 1 is a section view of the control assembly for gas ovens in accordance with the present invention;
- Fig. 2 is a side view of a detail of the control assembly seen in Fig. 1;
- Fig. 3 is a perspective view of the detail in Fig. 2;
- Fig. 4 is a perspective view of the control assembly seen in Fig. 1 with some parts removed for better view of others.
With reference to the drawings, a control assembly for gas ovens has been identified as a whole with reference numeral 1.
The control assembly for gas ovens 1 comprises a valve body 2, an inlet station 3 and an outlet station 4 for the combustible gas.
The inlet and outlet stations 3 and 4 are physically connected by connecting means 5 consisting of a main duct 9. The control assembly 1 further comprises at least one valve 6 operatively active on the main duct 9. Advantageously, the control assembly 1 comprises selecting means 8 to select a type of combustible gas, which means is operatively active on the main duct 9.
The control assembly further comprises at least two valves 6, 7 connected to each other in parallel through the main duct 9. More particularly, the main duct 9 starts from the gas inlet station 3, meets the first valve 6 and the second valve 7 and ultimately reaches the outlet station 4. A branch 10 of the main duct leads off from one of the two valves, in particular the first one 6, and it joins the main duct 9 close to the outlet station 4, thus defining the duct of minimum gas flow rate.
Advantageously active on the duct section or branch 10 leading off from one of the two valves, the first one 6 as said, is the selecting means 8 of the type of combustible gas; in this way a minimum-flow rate duct is defined while the main-duct 9 section operatively concerned with the other valve 7 defines a maximum-flow rate duct.
As said, the selecting means 8 interferes with the main duct 9 at least partly, in particular with the duct section 10. Said section 10 is therefore divided into two duct halves 12 and 13, in particular upstream of the selecting means 8; more specifically, defined between the valve 6 and the selecting means 8 is a gas delivery duct half 12, and a gas discharge duct half 13 is defined downstream of the selecting means 8, more particularly between the valve 6 and the gas outlet station 4.
In detail, valve 6 acts on the duct section 10 opening and closing it and in any case leaving the main duct 9 always open between the two valves 6 and 7. Valve 7 opens and closes the connection between the valve 7 itself and the outlet station 4 and defines the duct of maximum gas flow rate.
The selecting means 8 comprises a peg 11 that, as viewed from Figs. 2 and 3, includes a head 14 which, at the upper part thereof, has a substantially frustoconical portion 15 formed with a through hole 16 parallel to its symmetry axis and, at the lower part thereof, has a substantially cylindrical portion 17 formed with a through hole 18 parallel to its symmetry axis .
The frustoconical 15 and cylindrical 17 portions are connected to each other in such a manner that the two holes are aligned and in communication.
Preferably, the cylindrical portion 17 and frustoconical portion 15 are of one piece construction but they can also be two distinct parts linked together.
Advantageously, the substantially cylindrical portion 17 comprises a plurality of radial holes 19 of different diameters. Holes 19 extend until they reach the through hole 18 of the cylindrical portion.
The holes 19 of different diameters that, as said, are part of the selecting means 8 are susceptible of alternately facing the delivery duct half 12 and communicating with the discharge duct half 13; in this way a first union section 20 is defined which enables the gas to pass from the delivery duct half 12 to the discharge duct half 13.
The discharge duct half 13 comprises a seat 21 the shape of which matches that of the frustoconical portion 15. There is an at least partial engagement of the frustoconical portion 15 in the seat 21, so that second union sections 22 are defined between the delivery and discharge duct halves.
The peg 11 further comprises a base 23 for the head 14. The base 23, preferably of one piece construction with the cylindrical portion 17 and the frustoconical portion 15, is coupled with the valve body 2 at the portion of duct 9 concerned with peg 11.
Advantageously, in accordance with a first embodiment shown, this coupling is of the slidable and rotatable type, i.e. the base can slide and simultaneously turn within the valve body 2, enabling the peg 11 to move forward and rotate. This coupling, obtained for example by means of a thread on a preferably cylindrical base 23 and a corresponding thread on the portion of the valve body 2 housing the base itself (screw-nut screw coupling) , enables the frustoconical portion 15 to engage the seat 21 conforming in shape to the latter, in an adjustable manner. This allows the second union section 22 between the delivery duct half 12 and the discharge duct half 13 to be made in a continuously adjustable manner between a union section of zero area, when the frustoconical portion 15 is fully inserted in the seat 21, and a union section of maximum area, when the frustoconical portion 15 is only partly inserted in the seat 21.
In addition, rotation associated with translation of the peg allows the holes 19 of the cylindrical portion 17, formed with different sizes, to alternately face the delivery duct half 12, thus obtaining different first sections 20 for gas passage.
In another embodiment, coupling between base 23 and valve body 2 takes place only rotatably. In this way, the second union section 22 has a defined area which is unmodifiable, while the area of the first union section 20 can be adjusted through rotation of the peg that alternately on the delivery duct half 12 faces holes 19 of different sizes. The last-mentioned type of coupling between the base 23 of peg 11 and the valve body 2 is obtained by a bayonet fitting, for example.
The control assembly further comprises another valve 24 connected in parallel with the two valves 6 and 7. In particular, valve 24 is connected to valve 7 by a secondary duct 25. The secondary duct after interposition of valve 24, goes on and is connected to another gas outlet station 26 that is independent of the outlet station 4.
In addition, to enable delivery of combustible gas to all valves 6, 7 and 24 to be suddenly stopped, the control assembly 1 is provided with a main valve 27 operatively connected to the main, duct 9, downstream of the gas inlet station 3 and upstream of valves 6, 7 and 24.
All or part of the mentioned valves can be solenoid valves operated by a thermostat as shown in the following.
Advantageously, the valve body 2 is an enbloc piece housing the inlet station 3, outlet station 4, main duct 9 and selecting means 8.
Furthermore, advantageously and as well-apparent from Fig. 4, the enbloc valve body 2 comprises seats 28 to house the valves 6, 7, 24 and 27, seats 29 to connect the users to the gas outlet station 4 and one seat 30 to connect one delivery duct to the gas inlet station
3. In this way all elements constituting the control assembly 1 are contained within a single body constituting the valve body 2.
In use, the combustible gas enters the inlet station 3 and through the main duct 9 said gas reaches valves 6 and 7 which are open so that the gas can reach the outlet station 4. In this manner the maximum gas flow rate is ensured.
When the oven temperature reaches the pre-established temperature, a thermostat causes release of the solenoid valve 7 so that it is closed. Therefore passage of gas only occurs in the duct section 10, and thus in the delivery duct half 12, and reaches peg 11. Advantageously, the hole 19 facing the last-mentioned duct, possibly in co-operation with the second union section 22, enables passage of gas into the discharge duct half 13 that in turn feeds the end portion of the main duct 9.
In this way, only a predetermined amount of gas (depending on the size of the first and second passage sections) is supplied to the outlet station 4, which will give rise to the minimum gas flow rate.
Advantageously, to change the type of gas supplied, it is sufficient to act on the base 23 of peg 11 and rotate it in order to change the first 20 and possibly the second 22 union sections to adapt the control assembly 1 to the new type of gas.
Valve 24 can be usefully employed to supply a grill; in fact this valve is not part either of the maximum- flow rate circuit or of the minimum-flow rate circuit .
It should be appreciated that the control assembly for gas ovens in accordance with the present invention enables achievement of the above mentioned aims.
In fact, due to presence and conformation of the peg, the type of gas to be used can be selected by merely rotating the peg in a suitable manner within the peg seat, without being necessarily obliged to resort to the aid of a qualified technical person and to dismantle the control assembly, not even partly.
In addition, the described control assembly, due to the reduced number of its constituent elements (the control assembly contemplates a single inlet station for the combustible gas and two valves at most, to adjust the gas flow rate) , allows all the components to be housed in a single body or valve body, thereby ensuring a great compactness of the whole assembly as well as easy maintenance of same.

Claims

C L A I M S
1. A control assembly for gas ovens comprising a valve body (2), an inlet station (3) for the combustible gas, an outlet station (4) for the combustible gas, a main duct (9) connecting the gas inlet station (3) to the gas outlet station (4), the control assembly being characterised in that it comprises selecting means (8) associated with the main duct (9) to selectively determine a minimum gas flow rate depending on the type of combustible gas being supplied to the inlet station (3).
2. A control assembly as claimed in claim 1, characterised in that, after establishing the type of combustible gas to be supplied, the selecting means (8) is set to a minimum-flow rate position, further or continuous adjustments of the minimum flow rate not being carried out on said gas.
3. A control assembly as claimed in claim 1, characterised in that the selecting means (8) can be configured in a plurality of operating positions each of which corresponds to the respective minimum flow rate of one type of combustible gas.
4. A control assembly as claimed in claim 1, characterised in that the main duct (9) comprises a maximum-flow rate duct in fluid communication with the inlet station (3) and the outlet station (4), the control assembly further comprising a valve (7) active on said maximum-flow rate duct at least to enable or inhibit gas passage through said maximum-flow rate duct .
5. A control assembly as claimed in claim 4, characterised in that the main duct (9) brings the inlet station (3) and outlet station (4) into fluid communication at least through the maximum-flow rate duct on which said valve (7) is active and through a minimum-flow rate duct on which said selecting means (8) is active.
6. A control assembly as claimed in claim 1, characterised in that the selecting means (8) interferes at least partly with said main duct (9) and defines a gas delivery duct half (12) upstream of the selecting means (8), and a gas discharge duct half downstream of the selecting means (8) .
7. A control assembly as claimed in claim 6, characterised in that the selecting means (8) comprises a portion (17) formed with a plurality of holes (19) having different opening sizes; which holes (19) are susceptible of being alternately brought to face the delivery duct half (12), being in communication with the discharge duct half (13) and defining canalisations (20) with different gas flow rates between the delivery (12) and discharge (13) duct halves.
8. A control assembly as claimed in claim 7, characterised in that the selecting means (8) comprises a peg (11), which peg includes a head (14) having a substantially frustoconical portion (15) formed with a through hole (16) that is substantially parallel to its symmetry axis, and a substantially cylindrical portion (17) formed with a through hole (18) parallel to its symmetry axis, the two portions (15, 17) being connected to each other, being made as a one piece construction or separately, and having the respective through holes (16, 18) in mutual communication, the above mentioned holes (19) being radially disposed on the cylindrical portion (17) and communicating with the through holes (16, 18) .
9. A control assembly as claimed in claim 8, characterised in that the discharge duct half (13) comprises a seat (21) conforming in shape to said frustoconical portion (15), the frustoconical portion engaging at least partly in said seat (21) and defining union sections (22) between the delivery (12) and discharge (13) duct halves.
10. A control assembly as claimed in claim 8 or 9, characterised in that the peg (11) further comprises a base (23) for the head (21) , said base (23) being engaged in said valve body (2) either alternately slidably and rotatably in the valve body (2) itself thereby forming the first (20) and second (22) sections for adjustable union, or only rotatably in said valve body (2) thereby achieving and regulating a fluid communication between the delivery (12) and discharge
(13) ducts with canalisations of different gas flow rates .
11. A control assembly as claimed in anyone of the preceding claims, characterised in that it further comprises at least two valves (6, 7) connected in parallel through the main duct (9).
12. A control assembly as claimed in claim 11, characterised in that the selecting means (8) is active on a duct section (10) concerning one alone (6) of said valves and defining a duct of minimum gas flow rate; the other valve (7) acting on another section of the main duct defining a maximum-flow rate duct.
13. A control assembly as claimed in claim 12, characterised in that it comprises a further valve (24) connected in parallel to said valves (6, 7) and a second outlet station (26) for the combustible gas connected to said further valve (24).
14. A control assembly as claimed in claim 13, characterised in that the valves (6, 7, 24) are solenoid valves operated by a thermostat.
15. A control assembly as claimed in claim 12 or 13, characterised in that it further comprises a main valve (27) operatively located between the gas inlet station (3) and the valves (6, 7, 24).
16. A control assembly as claimed in anyone of the preceding claims, characterised in that the valve body (2) is an enbloc piece and houses the combustible gas inlet station (3), combustible gas outlet station (4), main duct (9) and selecting means (8).
17. A control assembly as claimed in claim 16, characterised in that the enbloc valve body (2) further comprises seats (28) to house the valves (6, 7, 24, 27), seats (29) to connect the users to the gas outlet station (4) and one seat (30) to connect one delivery duct to the gas inlet station (3) .
EP06727282A 2005-02-18 2006-02-13 Control assembly for gas ovens Active EP1848928B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06727282T PL1848928T3 (en) 2005-02-18 2006-02-13 Control assembly for gas ovens

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000244A ITMI20050244A1 (en) 2005-02-18 2005-02-18 CONTROL UNIT FOR GAS OVENS
PCT/IB2006/000473 WO2006090271A2 (en) 2005-02-18 2006-02-13 Control assembly for gas ovens

Publications (2)

Publication Number Publication Date
EP1848928A2 true EP1848928A2 (en) 2007-10-31
EP1848928B1 EP1848928B1 (en) 2012-06-06

Family

ID=36915005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06727282A Active EP1848928B1 (en) 2005-02-18 2006-02-13 Control assembly for gas ovens

Country Status (6)

Country Link
EP (1) EP1848928B1 (en)
ES (1) ES2386552T3 (en)
IT (1) ITMI20050244A1 (en)
PL (1) PL1848928T3 (en)
PT (1) PT1848928E (en)
WO (1) WO2006090271A2 (en)

Families Citing this family (4)

* Cited by examiner, ā€  Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009014568A1 (en) 2009-03-17 2010-09-23 E.G.O. Elektro-GerƤtebau GmbH Method and device for controlling a gas burner or gas stove
CN103133718B (en) * 2011-11-28 2016-09-14 博č„æ华ē”µå™Øļ¼ˆę±Ÿč‹ļ¼‰ęœ‰é™å…¬åø Gas control valve, electric control gas regulating valve and gas-cooker for gas-cooker
DE102013218014B4 (en) 2013-09-09 2015-03-19 E.G.O. Elektro-GerƤtebau GmbH Gas valve device and gas appliance with a gas valve device
ES2737124A1 (en) * 2018-07-04 2020-01-10 Bsh Electrodomesticos Espana Sa PROVISION OF GAS VALVE AND GAS KITCHEN (Machine-translation by Google Translate, not legally binding)

Family Cites Families (5)

* Cited by examiner, ā€  Cited by third party
Publication number Priority date Publication date Assignee Title
FR1517003A (en) * 1967-01-31 1968-02-05 Fonderie Soc Gen De Advanced gas valve
GB1329893A (en) * 1971-04-20 1973-09-12 Concentric Controls Ltd Gas taps
US4020870A (en) * 1976-03-26 1977-05-03 Lincoln Brass Works, Inc. Convertible gas valve structure
DE3319608A1 (en) * 1983-02-04 1984-08-09 Veb Kombinat Nagema, Ddr 8045 Dresden Energy saving circuit for gas-heated burners, especially for large kitchen appliances
ES1059642Y (en) * 2005-02-10 2005-09-01 Fagor S Coop ROTATING VALVE MOUNTED ON A MULTI-GAS COOKING DEVICE

Non-Patent Citations (1)

* Cited by examiner, ā€  Cited by third party
Title
See references of WO2006090271A2 *

Also Published As

Publication number Publication date
PT1848928E (en) 2012-07-05
ES2386552T3 (en) 2012-08-22
PL1848928T3 (en) 2012-10-31
WO2006090271A2 (en) 2006-08-31
ITMI20050244A1 (en) 2006-08-19
WO2006090271A3 (en) 2007-01-04
EP1848928B1 (en) 2012-06-06

Similar Documents

Publication Publication Date Title
CN101103229B (en) Rotary valve arranged in a multi-gas cooker
US10066838B2 (en) Dual fuel heating system
US7575710B2 (en) High flow gas saver
CN108463669B (en) Adjusting valve for gas cooker and gas cooker comprising same
US6206687B1 (en) High turndown modulating gas burner
US9523515B2 (en) Gas-air mixing device for combustion apparatus
MXPA05000804A (en) Dual fuel boiler.
EP1848928B1 (en) Control assembly for gas ovens
EP1190284B1 (en) Thermostatic mixing valve
WO1998033016B1 (en) High turndown modulating gas burner
EP3295085B1 (en) Cooktop
US9885483B2 (en) Thermostat
US20030198908A1 (en) Atmospheric burner unit for unvented gas logs heater
EP0894224B1 (en) Infrared heating system and metering element
CN116981884A (en) Partially premixed gas burner apparatus
CA2861748C (en) Dual pilot light burner for a household appliance
US20220186936A1 (en) Gas valve and gas stove
EP3593042A1 (en) Adjustable restrictor for burner
EP1591721A1 (en) Safety and gas flow regulating valve in cooking tops
CN115704498A (en) Burner cock
JPS6021291B2 (en) Capacity switching type gas combustion device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20070822

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20110412

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 561231

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120615

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20120628

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602006029942

Country of ref document: DE

Effective date: 20120802

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2386552

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20120822

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 561231

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120606

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

Effective date: 20120606

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120907

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20121006

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

26N No opposition filed

Effective date: 20130307

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602006029942

Country of ref document: DE

Effective date: 20130307

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120906

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130228

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130228

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130228

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130213

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20140220

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20140114

Year of fee payment: 9

Ref country code: FR

Payment date: 20140218

Year of fee payment: 9

Ref country code: BE

Payment date: 20140219

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20140130

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20060213

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130213

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20150813

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20150901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150813

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20151030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150302

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150213

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20220221

Year of fee payment: 17

Ref country code: DE

Payment date: 20220217

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20220201

Year of fee payment: 17

Ref country code: IT

Payment date: 20220228

Year of fee payment: 17

Ref country code: ES

Payment date: 20220318

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602006029942

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20230213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230213

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230213

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230901

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20240404

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230214