EP3184893B1 - Robinet thermostatique avec un moteur commandé par un circuit électronique pour les fours domestiques - Google Patents

Robinet thermostatique avec un moteur commandé par un circuit électronique pour les fours domestiques Download PDF

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Publication number
EP3184893B1
EP3184893B1 EP16160977.1A EP16160977A EP3184893B1 EP 3184893 B1 EP3184893 B1 EP 3184893B1 EP 16160977 A EP16160977 A EP 16160977A EP 3184893 B1 EP3184893 B1 EP 3184893B1
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EP
European Patent Office
Prior art keywords
thermostat
tap
gas
diaphragm
solenoid coil
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.)
Active
Application number
EP16160977.1A
Other languages
German (de)
English (en)
Other versions
EP3184893A1 (fr
Inventor
Mehmet Demirezen
Gokhan Turhan
Ercan Ersoy
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.)
Turas Gaz Armatuerleri Sanayi ve Ticaret AS
Original Assignee
Turas Gaz Armatuerleri Sanayi ve Ticaret AS
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.)
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Publication of EP3184893A1 publication Critical patent/EP3184893A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/005—Regulating fuel supply using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • 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
    • F23N5/025—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using electrical or electromechanical means
    • 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
    • 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
    • F23N5/107—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using mechanical means, e.g. safety valves
    • 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
    • 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

Definitions

  • the invention relates to a thermostat tap for gas operated domestic cookers/ovens which comprises a motor driven by electronic circuit and allowing direct control, as well as a solenoid coil or electromagnet connected to the gas inlet in the gas tap body for safety purposes, wherein the need for a transmission element is eliminated due to said motor driven by electronic circuit.
  • thermocouple or thermostat taps comprising heat-sensitive liquid therein are used for setting the oven temperature.
  • the lower and upper sections of the gas tap are adjusted to the desired heat by manually rotating for positioning and the meal is cooked for some time under temperature.
  • the thermocouple connected to the tap inside the oven is the part which provides said balance.
  • a thermocouple which is disposed in the oven and connected to the gas tap is located in the burner section of the oven, the thermal balance of which is desired to be adjusted and where burning occurs.
  • a force effect is formed inside the thermocouple by means of a heat-sensitive liquid inside the thermocouple. Said force effect is proportional to the temperature inside the oven.
  • thermocouple With the effect of said force, a diaphragm quite thin in structure is provided in the end portion of the thermocouple connected at tap side.
  • the diaphragm is opened/closed with the effect of the force coming from the thermocouple by means of the diaphragm.
  • thermal balance within the oven is maintained.
  • electrical thermostat taps in the state of the art, yet this type of configurations are intended for manually controlled ovens, and also the tap size increases while the sensitivity decreases because of the section where heat-sensitive liquid is stored.
  • temperature is set by means of a motor directly connected to the body and driven by an electrical circuit. Hence, touch-control of the ovens operated by gas can also be achieved.
  • the thermostat tap according to the invention can also be produced in a way to be safe against going out, as is the case for the gas taps of prior art.
  • the entire gas passage may be stopped by means of an electromagnet placed in the tap in the event of gas leakage.
  • the invention is different in that there also exists an alternative embodiment thereof allowing the use of a solenoid coil instead of electromagnet for providing safety against going out.
  • the U.S. Patent No. US2014/0117103 A1 dated 01.05.2014 discloses a "Thermostat and Housing for Thermostat".
  • said thermostat comprises a housing, a temperature sensor assembly, a switching arrangement, and an adjustment shaft.
  • the housing includes a generally L-shaped main body attached to a generally U-shaped cover.
  • the temperature sensor assembly includes a bellows operably fluidly attached to a capillary tube.
  • the switching arrangement is operated by the temperature sensor assembly to open and close a circuit as a result of the temperature changes in the operating fluid.
  • the adjustment shaft is configured to define the temperature adjustment point operating the circuit opening/closing assembly of the temperature sensor assembly and extends along the housing.
  • the aforementioned invention is designed for manually controlled domestic ovens while our invention, in contrast thereto, has a motor driven by electronic circuit suited for use in touch-control ovens.
  • thermostat for cooking appliances powered by gas
  • said thermostat comprising a body within which there are formed an inlet conduit and an outlet conduit, suitable to receive a gas flow from a supply source and to supply such a gas flow to a gas burner, respectively, as well as a chamber.
  • the chamber comprises a main opening and a second conduit which are respectively dimensioned for a maximum and a minimum flow rate of gas, wherein the thermostat body is arranged in fluid communication with the outlet conduit either directly, through said main opening, or indirectly, through said secondary conduit.
  • a valve is placed in the chamber for adjusting the gas flow rate, the valve being coaxially fitted therein. Thanks to these characteristics, the structural configuration of the thermostat body is smaller, more functional and cost-effective than the thermostat of prior art.
  • the application mentioned here is also designed for manually controlled domestic cookers, wherein the thermostat is opened/closed by means of a thermostatic liquid in accordance with the set temperature. Our application, on the other hand, the temperature is closed after reaching the set temperature by means of the motor driven by electronic circuit.
  • a safety and regulation valve unit for a gas installation comprising a duct (2) through which the fuel can flow between an inlet (4) and at least one outlet (6,8) is disclosed.
  • On-off fuel-valve means (10) are interposed in the duct (2) between the inlet (4) and the at least one outlet (6,8), and there is a movable device (18) for controlling the valve means as well as actuator means acting on the movable device in order to move it towards a first operative position in which it cooperates with the on-off valve means (10) in order to put the inlet (4) into communication with the outlet (6, 8).
  • the actuator means comprise a reversible motor (20) with a rotor (22) connected to a male-and-female screw (24a,26) coupling acting on the movable device (18) to translate it towards the first operative position and to control the on-off valve means (10) mechanically.
  • Document GB2225415 discloses a gas valve wherein a motor shaft (24) comprises a diaphragm pin (25) moving a valve member and limit switches (50) associated with the flange (51) of the valve member.
  • Our invention in contrast thereto, has a motor driven by electronic circuit suited for use in touch control ovens.
  • the invention is carried out by the thermostat tap according to claim 1.
  • Another object of the invention is to introduce a thermostat tap with an electromagnet instead of the solenoid coil in an alternative embodiment.
  • Another object of the invention is to be provided with an adjustment screw allowing a continuous gas passage at the minimum from the thermostat tap body.
  • Yet another object of the invention is to introduce a gas operated touch-control oven gas tap by allowing the temperature to be set by means of a motor directly connected to the body and driven by an electrical circuit.
  • Another object of the invention is to produce the tap of aluminum by profile extrusion process.
  • Yet another object of the invention is to provide the body as a single-piece body made of aluminium.
  • the thermostat tap (1) has been developed for touch-control, gas-powered ovens and basically consists of a body (1.1) having a gas inlet (1.1.1) and one or more gas outlets (1.1.2); at least one motor (1.3) which is driven by an electronic circuit connected to the body (1.1), which provides control without requiring any transmission element, and which comprises a shaft (1.3.1); a solenoid coil (1.2) that may be connected for safety purposes; at least one stop means (1.4) which allows stopping the motor (1.3) driven by electronic circuit and controlling the position; a plastic carrier (1.5) which isolates said stop means (1.4) inside the tap; a thermostat system (1.7) for setting the oven temperature, a sealing element (1.6) that provides sealing of the gas in said thermostat system (1.7), fixing screws (3) for fixing all these systems, and an adjustment screw (1.9).
  • the first area through which the gas first enters is the gas inlet (1.1.1) disposed on the tap body (1.1), and right behind is the solenoid coil pool (1.1.3) connected thereto.
  • the solenoid coil pool 1.1.3
  • an electromagnet (2.2) and a union (2.1) are disposed in place of the solenoid coil (1.2).
  • the thermostat tap (1) according to the invention is capable of being adjusted at the desired temperature range as long as the user system and burner is suitable for said purpose.
  • Said thermostat system (1.7) consists of a thermostat diaphragm (1.7.1) allowing gas passage at the set temperature by moving up/down, a diaphragm shaft (1.7.2), a diaphragm gasket (1.7.3), a pressure spring (1.7.4), a diaphragm washer (1.7.5), a diaphragm O-ring (1.7.6), and a pinion shaft (1.7.7).
  • Said pressure spring (1.7.4) allows pushing while the diaphragm gasket (1.7.3) prevents the thermostat diaphragm (1.7.1) from compression in case of closing. Thus, compression is avoided even in case of excessive rotation of the motor.
  • the motor (1.3) driven by electronic circuit is given energy and the diaphragm (1.7.1) is thus made to move up/down by means of the diaphragm pin (1.3.1.1) connected to the shaft (1.3.1).
  • the coil (1.3) and thermostat diaphragm (1.7.1) are retracted, and the gas inside the pool (1.1.3) passes through the body hole (1.1.7) and reaches the adjustment screw housing (1.1.8) and thermostat system housing (1.1.9).
  • the desired gas flow rate can be adjusted by means of the adjustment screw (1.9) located between the thermostat system (1.7) and the gas outlet (1.1.2).
  • Minimum level of gas passage is provided by the adjustment screw (1.9) while maximum gas passage is provided by the thermostat system (1.7).
  • the diaphragm (1.7.1) closes and maximum gas passage stops.
  • minimum gas passage is required to continue in order that constant temperature can be achieved and the flame will not go out, i.e. that inside of the oven will not be filled with gas.
  • a cross-sectional hole (1.1.4) is arranged on the body (1.1.1) in a way to connect the adjustment screw housing (1.1.8) to the gas outlet (1.1.2).
  • a gasket (1.8) is disposed in the gas inlet (1.1.1) for sealing and a gasket bearing (1.1.6) is arranged in the body (1.1) where said gasket is to be positioned.
  • An O-ring (1.2.1) with the desired properties may be located in said housing.
  • Said solenoid coil (1.2) is connected to the body (1.1) by means of at least two fixing screws (3).
  • the electromagnet (2.2) does not require either a fixing screw (3) or a gasket (1.8). Said electromagnet (2.2) is tightened by means of a union (2.1) therebehind.
  • the body is provided thereon with a sealing element bearing (1.1.10) where the sealing element (1.6) is placed and the motor (1.3) driven by electronic circuit is mounted on said part.
  • a stop means (1.4) is assembled on the body (1.1).
  • said stop means (1.4) needs to be isolated with the body (1.1).
  • the body (1.1) is provided thereon with a plastic carrier bearing (1.1.5) for positioning of the plastic carrier (1.5); wherein said plastic carrier (1.5) is mounted in the plastic carrier bearing (1.1.5) using at least two fixing screws (3).
  • the plastic carrier (1.5) is thus prevented from turning to the right and left, thereby achieving a sensitive positioning.
  • the plastic carrier (1.5) is provided with at least two lugs (1.5.3) facilitating it to be assembled in the body (1.1), and with a quadrangular bearing (1.5.4) for mounting the stop means (1.4) and for preventing the same from turning to the right and left.
  • Said stop means (1.4) is quadrangular in cross-section; wherein it comprises angular protrusions (1.4.1) that provide contact with the stop pin (1.3.1.2) on the shaft (1.3.1) connected to the motor (1.3) driven by electronic circuit.
  • Said angular protrusions (1.4.1) are located parallel to the stop pin (1.3.1.2).
  • the stop means (1.4) is threaded (1.4.2) inside so that it can be fixed.
  • thermostat tap (1) since the thermostat tap (1) according to the invention has a compact structure, the need for the gas distribution pipe to have a particular form is eliminated. As a result, it is not of much importance where the gas distribution pipe is arranged; in fact, even a small gas distribution pipe will be sufficient for the system.

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)

Claims (7)

  1. Robinet de thermostat (1) pour fours à gaz comprenant
    - un corps (1.1) muni d'une arrivée de gaz (1.1.1) et d'une ou plusieurs sorties de gaz (1.1.2) ;
    - un système de thermostat (1.7) configuré pour ajuster le passage de gaz selon une température établie, comprenant un diaphragme (1.7.1), un arbre de diaphragme (1.7.2), un joint d'étanchéité de diaphragme (1.7.3), un ressort de pression (1.7.4), un joint de diaphragme (1.7.5), un joint torique de diaphragme (1.7.6), et un arbre à pignons (1.7.7) ;
    - un moteur (1.3) entraîné par un circuit électronique relié au corps (1.1), comprenant un arbre (1.3.1), ledit arbre (1.3.1) comprenant
    • une goupille de diaphragme (1.3.1.1) déplaçant le diaphragme de thermostat (1.7.1) et
    • une goupille d'arrêt (1.3.1.2) ;
    le robinet de thermostat (1) comprenant en outre
    - une bobine de solénoïde (1.2) reliée au corps,
    - au moins un électroaimant (2.2) ;
    - une vis de réglage (1.9) ;
    - un moyen d'arrêt (1.4) pour arrêter le moteur (1.3) ;
    - un support plastique (1.5) supportant le moyen d'arrêt (1.4), afin d'isoler ledit moyen d'arrêt (1.4) du corps (1.1) du robinet de thermostat (1) ;
    et où la goupille d'arrêt (1.3.1.2) permet le contact entre le moyen d'arrêt (1.4) et l'arbre (1.3.1) du moteur (1.3).
  2. Le robinet de thermostat (1) selon la revendication 1 caractérisé en ce que le moyen d'arrêt (1.4) permet un contrôle de position ; et qu'il comprend des protubérances angulaires (1.4.1) pour arrêter la goupille d'arrêt (1.3.1.2) disposée sur le moteur (1.3) entraîné par circuit électronique, ainsi que des fils (1.4.2).
  3. Le robinet de thermostat (1) selon la revendication 1 caractérisé en ce que la bobine solénoïde (1.2) est située juste derrière l'arrivée de gaz (1.1.1) sur le corps du robinet (1.1).
  4. Le robinet de thermostat (1) selon la revendication 1 caractérisé en ce que le corps de robinet (1.1) comprend un bassin de bobine solénoïde (1.1.3) où est stocké le gaz avant de déclencher la bobine solénoïde (1.2), un orifice transversal (1.1.4), un palier de support plastique (1.1.5) empêchant le support plastique (1.5) de tourner vers la droite et la gauche, un palier de joint d'étanchéité (1.1.6) pour accueillir le joint d'étanchéité (1.8) prévu pour le scellement, un boîtier pour la vis de réglage (1.1.8), un boîtier pour le système de thermostat (1.1.9), un palier d'élément de scellement (1.1.10), et un orifice de corps (1.1.7).
  5. Le robinet de thermostat (1) selon la revendication 4 caractérisé en ce que le support plastique (1.5) comprend un palier quadrangulaire (1.5.4) pour empêcher le moyen d'arrêt (1.4) de tourner vers la droite et la gauche, des ergots (1.5.3), et des paliers cylindriques (1.5.1) et longitudinaux (1.5.2) permettant au moyen de contact (4) d'être engagé et au moyen de contact (4) de s'éloigner du corps (1.1).
  6. Le robinet de thermostat (1) selon la revendication 4 caractérisé en ce que l'orifice de corps (1.1.7) permet au gaz contenu dans le bassin de bobine solénoïde (1.1.3) d'atteindre le boîtier de vis de réglage (1.1.8) et le boîtier de système de thermostat (1.1.9).
  7. Le robinet de thermostat (1) selon la revendication 4 caractérisé en ce que l'orifice transversal (1.1.4) permet au gaz d'atteindre la sortie de gaz (1.1.2) à partir du boîtier de vis de réglage (1.1.8), ce qui permet un passage minimum de gaz, lorsque le système atteint la température établie.
EP16160977.1A 2015-12-25 2016-03-17 Robinet thermostatique avec un moteur commandé par un circuit électronique pour les fours domestiques Active EP3184893B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR201516955 2015-12-25

Publications (2)

Publication Number Publication Date
EP3184893A1 EP3184893A1 (fr) 2017-06-28
EP3184893B1 true EP3184893B1 (fr) 2019-08-14

Family

ID=55542602

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16160977.1A Active EP3184893B1 (fr) 2015-12-25 2016-03-17 Robinet thermostatique avec un moteur commandé par un circuit électronique pour les fours domestiques

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2225415A (en) * 1988-11-21 1990-05-30 Aisin Seiki Fluid control valve
IT1293697B1 (it) * 1997-04-30 1999-03-10 Op Srl Ora Op Controls S R L Unita' valvolare di sicurezza e regolazione per un impianto a gas particolarmente un impianto di riscaldamento
ES1052616Y (es) * 2002-08-02 2003-05-01 Fagor S Coop Valvula motorizada de gas para calefaccion, con seguridad.
DE10248616B4 (de) * 2002-10-18 2006-04-13 Karl Dungs Gmbh & Co. Kg Proportionalventil
ITMI20121633A1 (it) 2012-10-01 2014-04-02 Controlling Saving Energy Italia S R L Termostato
US20140117103A1 (en) 2012-10-29 2014-05-01 Mauro Antonio Rossi Thermostat and housing for thermostat
GB2526045A (en) * 2014-02-07 2015-11-18 Haven Ltd Valve and system for controlling a gas burner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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