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EP1848928A2 - Assemblage de commande pour des fours a gaz - Google Patents

Assemblage de commande pour des fours a gaz

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)
English (en)
Other versions
EP1848928B1 (fr
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/pl
Publication of EP1848928A2 publication Critical patent/EP1848928A2/fr
Application granted granted Critical
Publication of EP1848928B1 publication Critical patent/EP1848928B1/fr
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 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
    • 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

L'invention concerne un assemblage de commande pour des fours à gaz. Cet assemblage comprend un corps de vanne (2), un poste d'entrée (3) pour le gaz combustible, un poste de sortie (4) pour le gaz combustible, et un conduit principal (9) reliant le poste d'entrée de gaz (3) au poste de sortie de gaz (4). L'assemblage de commande (1) comprend également un moyen de sélection (8) pour sélectionner le type de gaz à utiliser.
EP06727282A 2005-02-18 2006-02-13 Assemblage de commande pour des fours a gaz Active EP1848928B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06727282T PL1848928T3 (pl) 2005-02-18 2006-02-13 Zespół sterujący do pieców gazowych

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000244A ITMI20050244A1 (it) 2005-02-18 2005-02-18 Gruppo di controllo per forni a gas
PCT/IB2006/000473 WO2006090271A2 (fr) 2005-02-18 2006-02-13 Assemblage de commande pour des fours a gaz

Publications (2)

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

Family

ID=36915005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06727282A Active EP1848928B1 (fr) 2005-02-18 2006-02-13 Assemblage de commande pour des fours a gaz

Country Status (6)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009014568A1 (de) 2009-03-17 2010-09-23 E.G.O. Elektro-Gerätebau GmbH Verfahren und Vorrichtung zur Steuerung eines Gasbrenners bzw. Gasherdes
CN103133718B (zh) * 2011-11-28 2016-09-14 博西华电器（江苏）有限公司 用于燃气灶的燃气调节阀、电控燃气调节阀及燃气灶
DE102013218014B4 (de) 2013-09-09 2015-03-19 E.G.O. Elektro-Gerätebau GmbH Gasventileinrichtung und Gasgerät mit einer Gasventileinrichtung
ES2737124A1 (es) * 2018-07-04 2020-01-10 Bsh Electrodomesticos Espana Sa Disposicion de valvula de gas y cocina de gas

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1517003A (fr) * 1967-01-31 1968-02-05 Fonderie Soc Gen De Robinet à gaz perfectionné
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 (de) * 1983-02-04 1984-08-09 Veb Kombinat Nagema, Ddr 8045 Dresden Energiesparschaltung bei gasbeheizten kochstellen, insbesondere fuer grosskuechengeraete
ES1059642Y (es) * 2005-02-10 2005-09-01 Fagor S Coop Valvula rotatoria montada en un aparato de coccion multi-gas

Non-Patent Citations (1)

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

Also Published As

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

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