HK1089228B - Gas regulating fitting - Google Patents

Description

Technical field

The invention relates to a gas-control device with electronic ignition for a gas heater according to the general concept of the first claim.

State of the art

Gas control panels for a gas heater or similar are available in a variety of designs. They are used to ignite and control a gas stream flowing to a burner.

DE - Notice Az. 103 05 929.6 describes a procedure and device for igniting a gas stream. To ignite a gas stream, an ignition-retardant magnet is controlled by an electronic control unit by generating a stop current supplied by a voltage source to keep a thermoelectric ignition-retardant valve locked from the gas stream open. Once the ignition-retardant magnet is excited, an electromagnet is excited temporarily with a voltage pulse, which causes a thermoelectric control rod flowing to the ignition-retardant valve to be moved so far in the longitudinal direction against the force of a return valve that the ignition-retardant valve, whose valve is attached to a valve and is controlled by a voltage-loader, is located in the direction of the ignition-retardant valve, and the ignition-retardant magnet is located above the ignition-retardant valve, and the necessary voltage is then determined by the electrical control element, which is located at the top of the ignition-retardant valve.

The disadvantage is that, in the event of a failure of the power source, e.g. empty batteries or a defect, the gas heater may continue to operate, but after being switched off, the gas stream is reignited and the gas heater cannot be started up.

GB 2 295 220 A provides a further design of a gas burner for electrical control of the ignition of a gas burner. Here a magnetic coil is connected to a mains voltage source by means of a switch. By exciting the magnetic coil, a gas valve is opened via an actuator so that the gas can flow to the burner, where it is electrically ignited. After a specified period of time, the magnetic coil is disconnected from the mains and the actuator returns to its original position. The opening of the gas valve is maintained by a magnetic unit over gases, which is powered by a thermoelement under the action of the burning flame.

In order to prevent the gas valve from closing during the operation of the gas burner in the event of a power failure, the gas sink may be equipped with an additional battery to maintain operation to a limited extent or the control may be operated manually to open the gas valve for the same reason.

This version also does not allow the gas burner to be ignited in the event of a power failure and has the disadvantage of not being protected against unwanted manual operation of the control such as is provided in the event of a failure to maintain the gas flow to the gas burner.

Description of the invention

The present invention is based on the problem of enabling manual ignition of gas regulating devices with electronic ignition of the gas stream. The purpose of this invention is to prevent unwanted manual operation. Furthermore, regardless of the type of ignition, safety should be ensured, in particular by interrupting the main gas flow to the burner when the ignition is performed.

According to the invention, the problem is solved by having a cover element on the housing, which in a first position provides a plunger for the actuation of a thermoelectric ignition valve and a main valve, protruding from the gas conducting space of the housing and operated longitudinally against the force of a retractor spring via an electromagnet, and covers a button of a piezoelectric trigger. In a second position of the cover element, a forced action of the plunger ensures that the main valve is in the closed position when the cover element is positioned. Furthermore, in this position of the buttons and the position of the free-flowing gas, a manual ignition of the gas is possible via a free-flowing current.

The solution was thus found to eliminate the above-mentioned disadvantages of the state of the art. The cover element certainly prevents unwanted manual operation to ignite the gas stream. Nevertheless, it is possible to ignite the ignition current manually in a simple way if necessary, for example in the event of a voltage failure.

The other claims for the invention show further advantages.

The gas-control unit is designed to be advantageous if the cover element has a backrest, the inclination of which is set so that the main valve is in the closed position in the second position.

The solution is also particularly simple if the cover is disc-shaped and placed on a central and rotatable pin, with opening points in the second position to release the button and the plunger.

In particular, for manufacturing purposes, it is a favourable design if the bowl is made in several parts.

Example of implementation

Err1:Expecting ',' delimiter: line 1 column 275 (char 274)

The exemplary gas control apparatus of the invention shown in Fig. 1 is a switch and control apparatus, preferably intended for installation in a gas-heated fireplace or similar, which enables the operation and monitoring of a burner by controlling the amount of gas flowing to the burner.

This gas-control unit consists of a housing 1 containing several functional units, some of which can be operated from the outside, a top 2 and a bottom 3 between which a flat seal 4 ensures the external tightness and a cover hood 5 and a gas inlet 6, a fuse outlet 7 and a main gas outlet 8.

The gas-control device described in this example shall have the following functional units: The fuel consumption of the fuel is calculated as the fuel consumption of the fuel.

The control is provided by an electronic control unit not shown, which is located together with a voltage source in a separate, location-independent housing of a remote control.

For operation, a longitudinally moving control rod 10 is located in a storage area 9 of housing 1 and its end is extended into the interior of housing 1, for example by means of circular rings 11 to ensure the necessary gas tightness. Between the top part 2 and the hood 5 an electromagnet 12 is fixed, which can be operated by remote control.

The electromagnet 12 has an axial core 14 attached to the actuator 10 and together with the actuator 10 forms a 10/14 nozzle. The reason for the division of the nozzle 10/14 is the resulting simplified installation time. The front side of the core 14 facing the housing 1 is visible through an exception 15 in the cover hood 5.

On a pin 16 on the hood 5 a rotating disc-shaped cover element 17 is stored, having on its bottom a back-track 18 acting on the core 14; in a first rest position (Fig. 4) the cover element 17 closes the button 13 and the exception 15, whereas in a second rest position (Fig. 5) resulting from twisting the button 13 and the core 14 of the electromagnet 12 are freely accessible by the 32/33 clearances in the cover element 17.

On the area of the control rod 10 protruding into the inner part of the top 2, a valve plate 20 attached to a main valve 19 is moved, which, under the force of a spring 21 attached to the top 2 on one side and to the valve plate 20 on the other, rests on a spring 22 on the control rod 10 such as a safety disc attached to a utility. The longitudinal movement of the control rod 10 is only possible against the force of a spring 23 supporting the top 1 in the housing. The movement is achieved by the valve plate 20 being attached to the valve 20 on the top 2 by the additional output force of the valve spring 23.

The inner part of the housing 1 formed by the upper part 2 and the lower part 3 is divided into several compartments by a partition 24 which, extending the actuating bar 10, has an opening, the side facing the upper part 2 of which forms the valve seat 25 for the valve plate 20 and thus the main valve 19 in connection with it, while the other side forms a valve seat 28 attached to a valve 26 for the ignition control valve. Between the two valve seats 25/28 a thermo-flammable gas bore leads to the ignition gas outlet 7 and 34 enters the opening. The valve 26 is connected to a thermo-electric magnet located at a point on the first part of the valve plate 27 and thereby to the main valve. The valve 27 is operated by a thermo-electric magnet located on the top of the valve 27 and is connected to a thermo-magnetic valve. The valve 27 is located on a thermostatically controlled platform, and the valve 27 is operated by an electronic controller.

The structure and operation of the ignition-retardant magnet 27 are, moreover, familiar to the professional, so that it is not necessary to describe further details.

In the direction of flow behind the start-up, inside the housing 1 there is a switch which controls the amount of gas flowing to the main burner. The switch is designed so that a modulating control is effected via a first valve with spring-shaped on and off in the partial load area via a second valve. The partial load flow is limited by an adjustable nozzle. A specialised unit of 36 and 35 rpm, which is located on the outer edge of the motor, is located between the outer edge of the motor 36 and the outer edge of the motor 36 and 35 rpm. The unit of 36 rpm is an electronic control unit, which is located near the outer edge of the motor 36 and 35 rpm. The control unit is located on an outer edge of the motor 36 and 35 rpm.

In normal operation of the gas control unit, the electronic control unit is operated by the remote control, which operates the electromagnet 12 by means of an electrical impulse in such a way that the core 14 moves the control rod 10 towards the ignition valve 26. First the main valve 19 is closed and then the ignition valve 26 is opened so that the anchor is attached to the ignition control magnet 27 (Fig. 2). Furthermore, the electronic control unit of the ignition magnet 27 is actuated so that, from the moment the anchor is placed on the ignition control magnet of the anchor, the current 27 can flow through the ignition control valve in this position.

After the ignition flame has been ignited, the drive unit 36 can be operated by the electronic control unit. This opens the switch in a familiar way by first causing a sudden opening of the second valve. The constant volume of gas bounded by an opening flows through the main gas outlet 8 through a main gas line to the main burner through an also not shown main gas line and is ignited through the ignition flame. The flames burn with a minimum height.

In the event of a failure of the electronic control unit, for example due to a voltage failure due to empty batteries, the cover element 17, which is usually in the first rest position of the electronic ignition shown in Fig. 4, is turned into the position shown in Fig. 5. In this movement, the backrest 18 moves the core 14 in a longitudinal direction so that the main ignition valve 19 is closed by the control rod 10. A hand-operated force is now applied manually through the front side of the core 14 to the operating valve 10 so that the ignition valve 26 is activated (Fig. 2).

After the thermocouple is heated by the burning ignition flame to provide the necessary holding current, the force on core 14 can be stopped and the cover element 17 can be brought to the position shown in Figure 4. Under the force of the retractor spring 23, the control rod 10 and the switch 13 take their starting position. The main valve 19 is opened and the ignition control valve 26 is held in a known manner by the thermoelectric ignition control magnet 27 (Fig. 3).

The method and the procedure to be followed are not, of course, limited to the example shown, but rather modifications, alterations and combinations are possible without leaving the scope of the invention.

Positioning of the reference marks

1 housing2 top3 bottom4 flat seal5 cover hood6 gas inlet7 ignition gas outlet8 main gas outlet9 storage 10 power bar11 round ring12 electromagnet13 key14 core15 exception16 pin17 cover element18 coil rail19 main valve20 valve 21 shut-off spring22 connector23 retractor24 splitter25 valve seat26 ignition valve27 ignition magnet28 valve seat29 valve stem30 valve stem31 retractor32 freemachinery33 machinery34 ignition gas drill35 controller36 drive unit

Claims (5)

1. Gas regulating valve with electronic ignition for a gas-heated chimney stove or similar with a thermoelectric ignition locking valve (26) and a main valve (19), which jointly serve both as a pilot light and to split the gas flow into components for a main burner and an ignition burner, and which are accommodated with other secondary functional elements in a segmented housing (1), a tappet (10; 14) located axially to the ignition locking valve (26) and the main valve (19) and which projects from the gas-bearing chamber of the housing (1) and can be actuated longitudinally against the force of a restoring spring (23) via an electromagnet (12), characterised by the fact that a masking element (17) is located on the housing (1), that in an initial position masks the tappet (10; 14) and a pushbutton (13) of a piezoelectric ignition element, wheras in a second position the main valve (19) is in the closed position and the pushbutton (13) and the tappet (10; 14) are enabled so that the gas stream can be ignited by manual operation.
2. Gas regulating valve with electronic ignition in accordance with patent claim 1, characterised by the fact that the masking element (17) has a link track (18), the pitch of which is fixed so that in the second position the main valve (19) is in the closed position.
3. Gas regulating valve with electronic ignition in accordance with patent claim 2, characterised by the fact that the link track (18) has notches for both the first and the second position of the masking element (17).
4. Gas regulating valve with electronic ignition in accordance with one or more of the patent claims 1 to 3, characterised by the fact that the disc-shaped masking element (17) is located centrally so as to be free to rotate on a pin (16) and has clearances (32; 33), which in the second position release the pushbutton (13) and the tappet (10; 14).
5. Gas regulating valve with electronic ignition in accordance with one or more of the patent claims 1 to 4, characterised by the fact that the tappet (10; 14) is segmented.