EP0818655B1 - Verfahren und Vorrichtung zum Steuern der Flammengrösse gasbetriebener Koch- oder Backgeräte - Google Patents
Verfahren und Vorrichtung zum Steuern der Flammengrösse gasbetriebener Koch- oder Backgeräte Download PDFInfo
- Publication number
- EP0818655B1 EP0818655B1 EP97110879A EP97110879A EP0818655B1 EP 0818655 B1 EP0818655 B1 EP 0818655B1 EP 97110879 A EP97110879 A EP 97110879A EP 97110879 A EP97110879 A EP 97110879A EP 0818655 B1 EP0818655 B1 EP 0818655B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching
- gas
- elements
- settings
- switching elements
- 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.)
- Expired - Lifetime
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Classifications
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- 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
- F23N2223/00—Signal processing; Details thereof
- F23N2223/08—Microprocessor; Microcomputer
-
- 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
- F23N2235/16—Fuel valves variable flow or proportional valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
- F23N2235/18—Groups of two or more valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2237/00—Controlling
- F23N2237/02—Controlling two or more burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2241/00—Applications
- F23N2241/08—Household apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87265—Dividing into parallel flow paths with recombining
- Y10T137/87298—Having digital flow controller
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87265—Dividing into parallel flow paths with recombining
- Y10T137/87338—Flow passage with bypass
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87265—Dividing into parallel flow paths with recombining
- Y10T137/87539—Having guide or restrictor
Definitions
- the invention relates to a device and a corresponding Method for controlled gradual reduction of a burner nozzle of a gas-operated cooking or baking device via a gas supply supplied gas stream Q.
- Common cooking or baking devices for example gas stoves, Gas hobs, gas hobs or gas ovens, have one or more burners in which the gas is mixed with atmospheric oxygen and burned.
- the gas supply to the burner is via a gas supply line from a gas pipeline network, a gas tank or a gas bottle is supplied with gas.
- a gas pipeline network With a city gas pipeline network the feed pressure is approx. 8 mbar; he however, is subject to fluctuations and can reach 4 mbar decline.
- the feed pressure is approx. 50 mbar.
- the burners have a burner nozzle that is connected the burner to the gas supply line the relevant, the flow resistance limiting the outflowing gas flow forms and thus the maximum heating power of the Brenners determined.
- the flow resistance in the gas supply line can usually be neglected become.
- the maximum heating output of the burner must, however in practical use by the user at the moment required heating power can be reduced. The reducing the heating power must therefore be with the help of a suitable one Control anytime, easily and on a value as close as possible to the desired or required Heat output can be carried out.
- From document DE 4225789 A1 is a measuring and testing device for the one-time setting and adjustment of a Gas heater known in the two in a row switched gas pressure regulator, a programmable logic controller Control with the necessary for the respective adjustment cases Working characteristics and four pressure gauges provided are.
- This known device is technical very complex, so that they are in the context of production control to adjust an adjustable throttle or an adjustable gas device pressure regulator of a gas heater suitable, but not for permanent adjustment the heating capacity of a gas-powered cooking or Baking device by the user.
- a gas regulator is known from document FR-911.892, which is a series of openings with different diameters has, of which at a desired heating level exactly one for the gas flow is opened.
- the present invention takes this state into account the technology based the task, a device and a method for controlled reduction of a burner nozzle a gas-powered cooking or baking device to create a gas feed line Q, by means of which the gas flow through the user of the device adjustable in steps reproducible with high accuracy is.
- the method and the device are technically inexpensive are feasible, easy to use and durable work reliably.
- the invention is based on the consideration, a number provide throttle elements, by means of which a through the burner nozzle and the connection pressure given, maximum Gas flow can be reproduced in stages in a defined manner can be reduced.
- the function of the respective throttle elements are switching elements to provide the gas flow through each Can turn throttle element on and off. Through the Combination of certain switching elements switched on and off can then achieve a defined reduction in the gas flow be performed or if all throttling elements are open, the maximum gas flow is achieved become.
- the gas flow Q a Number n of control elements connected in series in the gas supply line passes through, each with a throttle element Throttling the gas stream flowing through it and a Throttle element switching element connected in parallel to Switching a bypass on and off to the throttle element have, and the switching elements optionally, depending on the desired heating output, can be switched on and off.
- Mixed forms are also possible in which throttle elements connected in parallel as well as in series are.
- the control bodies can in principle the function of Switching element and that of the throttle element in one Realize assembly, for example in the form of an electromagnetic actuated binary throttle valve, the has a closed and a throttle position.
- the control members each comprise a switching element and a throttle element in the sense that they are these elements Realize in a single control at the same time.
- the switching elements are individually by hand, using a respective control device or advantageously by means of a common control device on and off.
- a common control device In the most general case there is a number n of control devices provide with which each switching element can be switched on and off individually.
- it is particularly advantageous one for the switching elements of a burner nozzle provide common control device, each has different switching levels to which the by the combination of the switching elements corresponding gradations are assigned to the gas flow.
- the control device for example the associated one Controller or by pressing the corresponding step key, a certain switching level is selected, and the Control unit combines the corresponding switching elements to generate the preselected one to be fed to the burner nozzle Gas stream.
- the control device an integer number i discrete for the n switching elements Has switching positions, each one Combination of the open and closed positions of the n Switching elements is assigned.
- the control device can for example a rotary or tap changer, a control panel with buttons assigned to the respective switching positions are, or preferably also a "touch control panel", a switch that can be operated by touch his.
- the user does not have to look around the individual control of the individual switching elements to take care of, since the control device the selected switching stage automatically in the appropriate manner in the corresponding Combination of open and closed switching elements implements.
- the number i of the switching positions the control device is smaller than the number the various realizable with the switching elements Gradations of the gas flow, for example, if not all levels for practical use are necessary. For example, it may be desirable be a fine gradation in the area of advanced cooking, in the other areas, however, a coarser gradation to provide the total number of adjustable levels in to keep practically reasonable limits.
- the closest higher or lower heating level is set by increasing or decreasing the switch position, i.e. a monotonous adjustment option is achieved.
- the number i of the switching positions of the control device is 2 n , the switching positions being assigned exactly one of the possible combinations of the open and closed positions of the n switching elements.
- uniform gradations of the heating power are realized by means of the control device for successive switching positions, as known to the user of electronically controllable electric stoves and electric hobs.
- the above-mentioned requirement with regard to a uniform gradation of the adjustable heating powers will, however, generally be difficult to meet with a series connection of throttle elements.
- the switching elements can in principle in any way are operated, for example mechanically, pneumatically or hydraulic. According to a particularly preferred feature it is proposed that at least one switching element, preferably all switching elements can be actuated electrically.
- the switching elements can be in an advantageous embodiment binary solenoid switching valves that are open and have a closed position.
- Such solenoid valves are known and fulfill those to be placed on them safety requirements. With such solenoid switching valves it is, as is generally the case with electrical actuatable switching elements, for an additional Feature of advantage if that occurring during the switching process Clacking is prevented or dampened.
- To this Purpose can open the electrical control signal and / or closing the switching element, at least in the area of the switching point, be edge-controlled, so that the switching process is not abrupt. advantageously, is therefore an electrical circuit for gradual Increase and / or decrease the electrical Control current provided.
- the device Carry out switching elements only a few switching cycles, namely only if the setting of the gas flow Q is changed becomes. Therefore, if at all, they are only subject to a very long-term wear.
- the flow resistance of the throttle elements in the factory or, if necessary be adjustable by the user Come for this for example adjustable throttle valves in question a calibration option for setting and adjusting of their choke resistance to a desired value. This can be beneficial if it is on the Achieving a high degree of accuracy of the gradations or of the set partial gas flows arrives, which then through exact setting and exact adjustment of the throttle elements is feasible. According to a preferred one, for the usual accuracy requirements to be set in practice sufficient feature is suggested that one, several or preferably all throttle elements one have predetermined flow resistance.
- the Throttle elements can be used, for example, as capillaries, capillary tubes, Nozzle or pipe constriction can be realized. These embodiments are with satisfactory accuracy to implement inexpensively.
- Fig. 1 shows one of a gas pipeline network, a gas tank or a gas bottle supplied gas supply line 1 for the supply of gas controlled according to the invention to a Burner nozzle 3, which is part of a burner 2, the e.g. built into a gas stove or gas oven can be.
- Burner nozzle 3 which is part of a burner 2
- Those for gas-powered are not shown
- Cooking and baking devices usual security elements (Thermocouple and associated solenoid valve) that the When the flame goes out, interrupt the gas flow.
- throttle elements 15, 25 and 35 there are three throttle elements 15, 25 and 35 connected in series in the gas supply line 1.
- the throttle elements 15, 25 and 35 are capillaries, which have a fixed flow resistance exhibit.
- the choke resistances of the individual choke elements are preferably different. For example, you can be dimensioned so that the burner nozzle 3 of the burner 2 supplied via the burner feed line 5 Gas flow by switching on one throttle element is reduced to 3/4 or 1/2 or 1/4. When switching the gas flow is from two or three throttle elements on one by the product of the above shares given part of the maximum gas flow reduced.
- switching elements 14, 24 and 34 For switching the respective throttle elements on and off these are switching elements 14, 24 and 34 in parallel connected.
- the switches When opening a switching element, the flows Gas flow unhindered by that acting as a bypass 16, 26, 36 Switching element, so that the associated throttle element does not reduce the gas flow.
- the throttling the throttle element 25 out of function and the gas flow provided the throttle elements 14 and 34 are closed are throttled only by the throttle elements 15 and 35.
- the switching elements 14, 24 and 34 are common Control device 4 controlled by means of which the desired Heating power is adjustable.
- To switch off of the gas flow is an additional one, in the burner supply line 5 or preferably the gas supply line 1 used Switching valve, which is not shown, required. This can be done, for example, to monitor the Extinguishing the flame uses existing solenoid valve become.
- all three switching elements electrically operable binary Solenoid switching valves that have an open and a closed position have a bypass either one or can be switched off. That independently of each other opening and closing of the solenoid switching valves is controlled by the control device 4.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Feeding And Controlling Fuel (AREA)
Description
- Fig. 1
- eine schematische Darstellung einer erfindungsgemäßen Vorrichtung mit drei in Reihe geschalteten Drosselelementen mit Bypass.
Claims (14)
- Vorrichtung zum gesteuerten stufenweisen Reduzieren des einer Brennerdüse (3) eines gasbetriebenen Kochoder Backgerätes über eine Gaszuleitung (1) zugeführten Gasstromes Q,
dadurch gekennzeichnet, daß
sie eine Anzahl n Steuerorgane aufweist, die in Reihe in die Gaszuleitung (1) geschaltet sind, und die Steuerorgane jeweils ein Drosselelement (15,25,35) zum Drosseln des sie durchströmenden Gasstromes und ein dem Drosselelement (15,25,35) parallel geschaltetes Schaltelement (14,24,34) zum Ein- und Ausschalten eines Bypasses (16,26,36) zu dem Drosselement (15,25,35) aufweisen, und die Schaltelemente (14,24,34) wahlweise, je nach der gewählten Heizleistung, ein- und ausschaltbar sind. - Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Schaltelemente (11,21,31,41;14,24,34) mittels einer gemeinsamen Steuereinrichtung (4) ein- und ausschaltbar sind.
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Steuereinrichtung (4) eine ganzzahlige Anzahl i diskreter Schaltstellungen aufweist, denen jeweils eine Kombination der Offen- und Geschlossenstellungen der n Schaltelemente (11,21,31,41;14,24,34) zugeordnet ist.
- Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Anzahl i der Schaltstellungen der Steuereinrichtungen (4) 2n beträgt, wobei den Schaltstellungen jeweils genau eine der möglichen Kombinationen der Offen- und Geschlossenstellungen der n Schaltelemente (11,21,31,41;14,24,34) zugeordnet ist.
- Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Kombinationen der Offen- und Geschlossenstellungen der n Schaltelemente (11,21,31,41;14,24,34) einer Folge von m = 1,2,3,...,2n aufeinanderfolgenden Schaltstellungen Sm der Steuereinrichtung (4) derart zugeordnet ist, daß die der Brennerdüse (3) zugeführten Gasströme Qm eine aufsteigende oder absteigende Folge bilden, die im wesentlichen die Werte Qm = Qmax · (m-1) / (2n-1) annimmt.
- Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die maximale Abweichung der Gasströme Qm von der exakten Abstufung weniger als ± 20%, vorzugsweise weniger als ± 15%, bevorzugt weniger als ± 10% und besonders bevorzugt weniger als ± 5% beträgt.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß mindestens ein Schaltelement (11,21,31,41;14, 24,34) als binäres Magnetschaltventil ausgebildet ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sie eine elektrische Schaltung zum allmählichen Erhöhen und/oder Verringern des elektrischen Steuerstromes des Schaltelementes (11,21,31,41;14,24,34) aufweist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß mindestens eines der Drosselelemente (12,22,32, 42;15,25,35) einen fest vorgegebenen Strömungswiderstand aufweist.
- Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß das Drosselelement (12,22,32,42;15,25,35) als Kapillare, Kapillarrohr, Düse oder Rohrverengung ausgebildet ist.
- Koch- oder Backgerät, insbesondere Gasherd, Gaskochfeld, Gaskochmulde oder Gasbackofen, dadurch gekennzeichnet, daß es eine Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 10 aufweist.
- Verfahren zum gesteuerten stufenweisen Reduzieren des einer Brennerdüse (3) eines gasbetriebenen Koch- oder Backgerätes über eine Gaszuleitung (1) zugeführten Gasstromes Q, dadurch gekennzeichnet, daß der Gasstrom Q eine Anzahl n in Reihe in die Gaszuleitung (1) geschalteter Steuerorgane durchläuft, jeweils ein Drosselelement (15,25,35) zum Drosseln des sie durchströmenden Gasstromes und ein dem Drosselelement (15,25,35) parallel geschaltetes Schaltelement (14,24,34) zum Ein- und Ausschalten eines Bypasses (16,26,36) zu dem Drosselelement (15,25,35) aufweisen, und die Schaltelemente (14,24,34) wahlweise, je nach der gewählten Heizleistung, ein- und ausgeschaltet werden.
- Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß die n Schaltelemente (11,21,31,41;14,24,34) mittels einer gemeinsamen Steuereinrichtung (4) einund ausgeschaltet werden.
- Verfahren nach Anspruch 13, dadurch gekennzeichnet, daß die n Schaltelemente (11,21,31,41) von einer Steuereinrichtung (4) gesteuert werden, die eine ganzzahlige Anzahl i diskrete Schaltstellungen aufweist, die jeweils einer Kombination der Offen- und Geschlossenstellungen der n Schaltelemente (11,21, 31,41) zugeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19627539A DE19627539A1 (de) | 1996-07-09 | 1996-07-09 | Verfahren und Vorrichtung zum Steuern der Flammengröße gasbetriebener Koch- oder Backgeräte |
DE19627539 | 1996-07-09 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0818655A2 EP0818655A2 (de) | 1998-01-14 |
EP0818655A3 EP0818655A3 (de) | 1998-03-18 |
EP0818655B1 true EP0818655B1 (de) | 2002-05-22 |
Family
ID=7799283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97110879A Expired - Lifetime EP0818655B1 (de) | 1996-07-09 | 1997-07-02 | Verfahren und Vorrichtung zum Steuern der Flammengrösse gasbetriebener Koch- oder Backgeräte |
Country Status (4)
Country | Link |
---|---|
US (1) | US5938425A (de) |
EP (1) | EP0818655B1 (de) |
DE (2) | DE19627539A1 (de) |
ES (1) | ES2177862T3 (de) |
Cited By (1)
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---|---|---|---|---|
EP3220046A1 (de) | 2016-03-17 | 2017-09-20 | BSH Hausgeräte GmbH | Gasarmatur und kochgerät |
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DE19853262A1 (de) | 1998-11-18 | 2000-05-25 | Bsh Bosch Siemens Hausgeraete | Regelung der Brennerheizleistung bei einem gasbetriebenen Koch- oder Backgerät |
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PL2649354T3 (pl) | 2010-10-15 | 2019-11-29 | Bsh Hausgeraete Gmbh | Jednostka zaworu gazowego |
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-
1996
- 1996-07-09 DE DE19627539A patent/DE19627539A1/de not_active Withdrawn
-
1997
- 1997-07-01 US US08/886,275 patent/US5938425A/en not_active Expired - Fee Related
- 1997-07-02 EP EP97110879A patent/EP0818655B1/de not_active Expired - Lifetime
- 1997-07-02 DE DE59707311T patent/DE59707311D1/de not_active Expired - Lifetime
- 1997-07-02 ES ES97110879T patent/ES2177862T3/es not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3220046A1 (de) | 2016-03-17 | 2017-09-20 | BSH Hausgeräte GmbH | Gasarmatur und kochgerät |
Also Published As
Publication number | Publication date |
---|---|
ES2177862T3 (es) | 2002-12-16 |
EP0818655A3 (de) | 1998-03-18 |
US5938425A (en) | 1999-08-17 |
DE19627539A1 (de) | 1998-01-15 |
DE59707311D1 (de) | 2002-06-27 |
EP0818655A2 (de) | 1998-01-14 |
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