DE2308641A1 - DEVICE FOR CONTROLLING GAS BURNERS - Google Patents

Description

COMPAGNIE EÜROPEENNE POUR L'EQUIPiWENT MENAGER, CEPEM Paris, France

Device for controlling gas burners.

The invention relates to a device for controlling Gas burners, and especially burners for kitchen stove worktables ^, especially when they are covered are.

Sometimes it is interesting to have very little heat effects obtained to achieve slow cooking or to keep dishes warm. An expedient means of achieving this consists of an on / off control; especially if you Radiant burner with cover or with surface combustion used. But then you have to turn the burners on with each cycle be able to re-ignite and one must have a means to check that the ignition went well and the gas supply to the burner in the event of one to interrupt unintentional going out.

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The ignition can be caused directly by an electrical spark generator system (which works with induction or piezoelectricity) or by an electrical resistor brought to a high temperature; it is then necessary to control the presence of the flame by means of inertia, for example by taking advantage of the electrical properties of the ionized gases or the light radiation emitted by them; you can also use a flame monitor placed near the burner.

The invention is based on a device for controlling gas burners that regulates the amount of heat the heating process of the burner, permits and various organs such as gas burner ignition device and safety device having. The ignition is characterized by an energy regulator that controls the heating process by alternating ignitions and shutdown of this brake regulates and, on the one hand, cyclically the electrical supply of a solenoid valve for the gas supply to the burner and, on the other hand, continuously from the beginning of Einsehaltens to the electrical supply of the various organs.

Exemplary embodiments of the invention are now intended will be explained in more detail using the accompanying drawings, in which:

1 shows an electrical circuit diagram of a control device using a bipolar disconnection energy setting device;

Fig. 2 is an electrical circuit diagram of a control

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direction using a unipolar energy adjuster and thermostatic organ.

In flg. 1, B denotes a burner, the gas supply of which depends on a solenoid valve £ 72; 7 is a Flame monitor, the gas supply of which depends on a solenoid valve £ 71; with ISM is a mercury safety liquid holder with a memory S heated by the flame monitor 7 designated; RT is a delay relay and BS is a power unit or regulator that is fed from an electrical alternating current network; G is an induction spark generator that IO up to 500 sparks per minute supplies between an electrode E and the body of the grounded flame detector 7; a light indicator Ll enables the signaling of the operation of the spark generator G or a warning to the user, if the guardian flame has gone out; the ISM safety switch prohibits the gas supply to burner B and to Flame monitor 7; a light indicator L2 assigned to the energy setting device RS on the side of the solenoid valve E72 enables the ignition or extinction of the To signal burner B.

The operation of the device is as follows: The user starts the burner by activating the energy setting device RS with the aid of a control button M activates and sets this button so that it receives the desired heat curve, with this button on a lock C acts to regulate the position of the bimetallic strip bi of the energy input direction; such The infiltration device is known per se; her work

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beitsweise offers no difficulties for the skilled person; the coil 1 of the solenoid valve EVl is then via a Normally closed contact Rl of the delay relay RT fed; the spark generator G 1st via a normally closed contact R2 of the safety changeover switch ISM fed and ensures the ignition of the flame monitor V, which heats the memory S of the safety switch ISH; this creates working contacts T2 and T3 of this reversing switch made; this memory S is arranged so that it is of the Flame monitor and not heated by the burner. Contact T2 enables coil 1 of the solenoid valve to be fed EVl without going through the delay relay RT; where the spark generator G through to the same tent point Feed lock stops working; the delay relay responds and enables its Normally open contact Tl feeds the coil 2 of the solenoid valve EV2, whereby the Zontakt T3 of the safety switch ISM closed 1st; the gas receiving burner B is through the guard flame V ignited. After a certain period of time, the bimetallic strip of the energy adjustment device occurs in operation and interrupts the supply of the coil 2 of the solenoid valve EV2; the bimetal strip bi has to cooled a certain time and closes the electrical supply circuit for the coil 2 again and opens the solenoid valve EV2; burner B works again.

To switch off the burner, it is sufficient to set the control button H to "Standstill", which stops the supply of the Energy setting device interrupts; the flame of the flame monitor goes out ckirch close the solenoid valve EVl.

According to Fig. 2, the gas supply to a burner E depends on one

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Solenoid valve EV2 off; the gas supply to a diamond monitor V takes place via a solenoid valve EV1; ISM is a mercury safety switch with a memory S heated by the flame monitor V; RT is a delay relay and RBl an energy setting device with unipolar disconnection, which is fed via an electrical alternating current network; G is one Induction spark generator that generates 10 to 500 sparks per minute between an electrode E and the electrically Earth placed body of the flame monitor V supplies; Th is a thermostatic organ with an opening contact ThI, which is connected in series in an electrical supply of the solenoid valve EVl, this organ in such a way is arranged to determine the temperature of the device heated by the burner; an indicator light 14 in parallel to the spark generator G enables the functioning of this spark generator to be signaled; a light indicator L3 parallel to the coil of the solenoid valve EV2 makes it possible to operate the solenoid valve so that the To make gas burner B »visible. How the Device is the following:

The user starts the burner by pressing the Energelnstellelnrichtung REl with the help of an operating button M starts and sets this button so, that he gets the desired course of work; this button acts on a control cam for the removal of the Bimetallic strips B1 of the energy adjustment device or of the energy regulator are such an adjustment device is known per se; their functionality offers nothing Difficulties for the specialist; the coil 1 of the solenoid valve EVl is then via a normally closed contact Rl of the

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Delay relay RT powered; the spark generator G is over a normally closed contact R2 of the safety switch ISM is fed and ensures the ignition of the flame monitor Y, whereby the memory S of the safety switch ISM is heated; this makes the working contacts T2 and T3 of the switch closed; the memory S is arranged so that it is from the flame monitor and not from Burner is heated; the contact T2 enables the coil 1 of the solenoid valve EVl to be fed without going through the delay relay RT, at the same time as the spark generator G due to the feed block stops working; the delay relay responds and its work contact Tl enables the Coil 2 of solenoid valve EV2; the contact T3 of the security ehalt era ISM is closed; the one with gas The fed burner B is ignited via the flame monitor V. After a certain time, the bimetallic strip begins to work and the energy dividing device interrupts the supply to coil 2 of solenoid valve EV2; after a certain time, after which the bimetallic strip bi has cooled down, the electrical feeder of the coil 2 closes again and opens the solenoid valve EV2; burner B works again.

If the temperature of the device heated by the burner B exceeds a certain value determined by the thermo ¹ Gas supply to the burner leads as long as the contact ThI is not closed, ie

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as long as the temperature of the thermostatic organ Th monitored device has not returned to a value less than the work value of the organ Th; is the If the temperature has fallen, the contact ThI closes and the solenoid valve is fed again via the energy setting device.

To switch off the burner, it is sufficient to set the control button M to the "off" position, whereby the supply of the energy setting device is interrupted; the flame monitor goes out when the solenoid valve EVl is closed.

The thermostatisehe organ can be formed by any device, for example a thermocouple or a Thermits dance, which is associated with this relay and has an opening contact; but can also use a safety switch analogous to the ISM switch for a Control of the ignition of the guard flame be formed.

The device according to the invention can be applied to any burner, its heating behavior or heating process is to be controlled, d. H. whose amount of heat is to be modulated by regulating the ignition or switch-off times as is the case with numerous uses, for example as an oven, water heater, air or Hot water heating device, metallic or refractory heating plate, for example for kitchen stoves or the like; if the burner is covered, as is the case, for example, with certain kitchen stoves, burners are used and flame safeguards are advantageous from that of the air

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- 8 set design (eeront a air total).

Han can also use the energy setting device via a Feed timer that regulates the total working time of the gas burner. You can also use the hand control button Replace M of the energy setting element with a programmer to vary the heating behavior of the gas burner to be able to by having the energy setting device in different positions during the entire working time of the burner confers; the programmer can also switch on the burner at a specified moment as well as stopping or switching off this burner control at a certain moment, then the heating process by setting the energy adjustment device set with the help of the manual control button M. will.

With a view to a concise representation, the invention has only been explained on the basis of a bäapielewelsen embodiment, changes and modifications are within the scope of the invention.

Expectations:

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Claims (1)

P ° 6677: 8269 EXPECTATIONS: Device for controlling gas burners, with regulation of the amount of heat, that is the course of heat of the burner * old various organs such as gas burner ignition device or safety device, characterized by an energy setting device that regulates the course of heating by alternating ignition and shutdown processes of the burner and is designed so that On the one hand, it cyclically causes the electrical supply of a gas supply solenoid valve to the burner and, on the other hand, continuously ensures the electrical supply of the various organs from the time it is put into operation. 2. Control device according to claim 1, characterized in that the ignition device has a flame monitor with a gas supply circuit with solenoid valve, whose electrical supply is continuously via the energy adjustment device from switching on of the burner provides. 3. Control device according to one of claims 1 or 2, characterized in that the energy setting device is a bimetallic strip, which is connected by an electrical current through an opening contact this Bimetallic Strelfens fed resistor is heated. 4. Control device according to one of claims 1 to 3 »thereby characterized in that the energy adjustment device is designed with bipolar disconnection. 309837/0804 - io - ίο * ?. Control device according to one of claims 1 "to 3» characterized in that the energy adjustment device trained with unipolar disconnection 1st. 6. Stetleinrichtung according to a cL © r preceding claims, characterized by a thermoBtatisehes organ aur Eraaittliuig d © r ^f ierapei ^% atur a device heated by this gas burner and by an opening contact of this taermoetatiechen organ that is in series in this electrical feed circuit for the solenoid valve Gas burner switched on 1st. 7. Control device according to the previous Anepr borrowed, thereby gökennzelkom that the energy regulator by a PxOgx'uiuiii ^ e'UcU ' BheuochZilet , egg for the starting and switching off of the gas burner ssu specified blind spot *). cares. 8. Control device according to eUxem of the preceding claims 1 to 4ι thereby gekfinnaeiconet that a timer is switched on in the supply of the energy setting device. 309837/0804 Blank page