EP2652402B1 - Gas valve unit comprising a lift deflection system - Google Patents

Description

The invention relates to a gas valve unit for setting a gas volume flow supplied to a gas burner of a gas appliance, in particular a gas cooking appliance, the gas valve unit having a valve housing and an actuating shaft which protrudes with an operating section from the valve housing, and wherein a shut-off valve is formed in the valve housing.

Gas valve units of this type are often referred to as secured gas valves. The gas valve unit has a variable opening cross-section that can be adjusted via the actuating shaft. The opening cross-section can be adjusted continuously. The size of the gas volume flow flowing through the gas valve unit and thus the size of the flame on the gas burner depends directly on the opening cross section. As a rule, the opening cross-section can be set to zero in generic gas valve units, that is to say the gas valve unit can be completely closed.

In addition, the gas valve unit has a shut-off valve that can be actuated independently of the setting of the opening cross-section. The shut-off valve usually has an open switch position and a closed switch position, but no intermediate positions. When the shut-off valve is closed, the gas flow through the gas valve unit is completely interrupted. The opened shut-off valve, however, has no influence on the opening cross-section of the gas valve unit. The shut-off valve serves, on the one hand, to ensure that the gas valve unit closes completely redundantly. On the other hand, it is possible to operate the shut-off valve automatically, for example as a function of the signal from a flame sensor.

Known gas valve units of the type mentioned at the beginning are usually designed as a plug valve. Here the opening cross-section is set as a function of the rotational position of a plug that can rotate in a valve seat. The actuating shaft is arranged coaxially with the plug and connected to it. The opening cross-section of the gas valve unit is adjusted by turning the actuating shaft set. The shut-off valve can be opened by pressing the same operating shaft.

Gas valve units of this type often have an unfavorable switching behavior. In particular, the opening cross section can often only be set imprecisely and not reproducibly.

The WO 90/12255 describes a control valve with several on-off valves and a shut-off device.

The DE 10 2008 027 546 A1 describes a combined valve device with an open-close valve and a so-called bipolar valve.

The EP 1 672 279 A1 describes a gas valve for a gas burner with a rotatable valve plug.

The invention is a gas valve unit according to claim 1.

The present invention is based on the object of providing a generic gas valve unit with improved switching behavior.

This object is achieved according to the invention in that at least two open-close valves are formed in the valve housing, the open-close valves being operable by rotating the actuating shaft and the shut-off valve being actuated by axially displacing the actuating shaft. The open-close valves serve to set the opening cross-section of the gas valve unit, and thus the size of the gas volume flow flowing through the gas valve unit. This can be done, for example, in that the open-close valves are opened and closed again one after the other. The open-close valves are controlled by turning the actuating shaft. In addition, the gas valve unit has an additional shut-off valve which, in the closed state, completely interrupts the gas flow through the valve unit. In the open state, the shut-off valve has such a large opening cross section that the size of the gas volume flow is determined solely by opening and closing the open-close valves. The shut-off valve is actuated by moving the actuating shaft axially. This means that both the open-close valves and the shut-off valve can be actuated via the same actuating shaft.

At least two throttle points, each with at least one throttle opening, through which gas can flow depending on the switching position of the open-close valves, are particularly advantageously formed in the valve housing. Preferably, exactly one throttle point is assigned to each open-close valve. When the on-off valve is open, gas can flow through this throttle point; when the on-off valve is closed, the throttle point assigned to this on-off valve cannot be flowed through with gas directly from the gas inlet, but at most via a detour through other throttle points .

The shut-off valve is preferably arranged in the region of a gas inlet of the gas valve unit. When the shut-off valve is closed, there is no gas at any of the open-close valves or at any throttle point. If there are leaks in the area of the open-close valves or the throttle points, gas is reliably prevented from flowing out of these leaks when the shut-off valve is closed.

The shut-off valve preferably has a movable shut-off element. The shut-off element can be formed, for example, by an axially movable valve disk which, in the closed state, presses on an annular valve seat.

The movable shut-off element of the shut-off valve is preloaded in the closing direction, in particular by means of spring force. As a result, the shut-off valve is always closed when the gas appliance is inoperative.

The movable shut-off element of the shut-off valve can be moved into an open position by pressing the actuating shaft against the bias. The pushing movement of the actuating shaft is transmitted directly or indirectly to the shut-off element. In the open position, the shut-off element is lifted from the valve seat of the shut-off valve, thereby releasing the gas path from the gas inlet of the valve housing in the direction of the open-close valves.

Furthermore, the movable shut-off element of the shut-off valve can be held in the open position counter to the spring force by means of the force of a magnetic coil. The shut-off valve has a magnetic coil with which a force acting in the opening direction can also be exerted on the shut-off element. The magnetic coil can have voltage applied to it, for example, from a thermocouple or from an electronic controller. The magnetic coil is designed in such a way that the shut-off element, which is already in the open position, can be held in this position by means of the force of the magnetic coil. On the other hand, it is not possible to move the shut-off element from a closed position into the open position by means of the force of the magnetic coil. The magnetic coil is coupled to a flame sensor in the area of a gas burner in such a way that the shut-off valve is kept open when a gas flame is burning on the gas burner. After the gas flame has gone out, the Power supply to the solenoid is interrupted and the shut-off valve closes automatically by means of spring force.

According to the invention, a deflection device is provided which converts an axial movement of the actuating shaft into an axial movement of the shut-off element of the shut-off valve that is substantially perpendicular thereto. The direction of movement of the shut-off element is perpendicular to the axial actuation direction of the actuation shaft. Such a construction of the gas valve unit is selected in order to minimize the dimensions of the housing of the gas valve unit in the axial direction of the actuating shaft.

The deflecting device preferably has a first sliding element which is arranged on the actuating shaft in the region of the end of the actuating shaft opposite the operating section. When the actuating shaft moves axially, the first sliding element is moved along with it. The first sliding element and the actuating shaft can, for example, be made in one piece.

The first sliding element is preferably designed as a first conical element in such a way that a tip of the first conical element points away from the operating section of the actuating shaft. When the actuating shaft is pressed, the first conical element moves in the direction of its tip. When the actuating shaft is rotated, however, the spatial position of the first conical element does not change because it is rotated about its axis of symmetry.

The deflecting device preferably has a second sliding element, which is in contact with the first sliding element at least while the actuating shaft is being pressed. The second sliding element slides on the first sliding element.

The second sliding element is preferably designed as a second conical element, the central axis of which is arranged essentially perpendicular to the actuating shaft and the tip of which points in the direction of the first sliding element. The design of the second sliding element as a second conical element has the advantage that the rotational position of the second conical element with respect to its axis of symmetry has no effect on the functioning of the deflection device.

The first sliding element and the second sliding element are designed and arranged in such a way that an axial displacement of the actuating shaft as a result of pressing on the operating section is converted into an axial displacement of the second sliding element in the direction away from the actuating shaft.

Furthermore, the second sliding element is in operative connection with the shut-off element of the shut-off valve in such a way that an axial movement of the second sliding element in the direction away from the actuating shaft is transmitted to the shut-off element. When the actuating shaft is pressed, the shut-off element of the shut-off valve is lifted from its valve seat and the shut-off valve is thereby opened.

Furthermore, an actuating device for the on-off valves is provided in the gas valve unit, which actuating device is coupled to the actuating shaft by means of a coupling device at an end of the actuating shaft located inside the valve housing. The actuating device comprises, for example, a permanent magnet which can be moved relative to the open-close valves. A rotational movement of the actuating shaft is transmitted to the actuating device for the on-off valves by means of the coupling device.

The coupling device is designed in such a way that the actuating device is coupled to the actuating shaft in a rotationally rigid manner.

Furthermore, the coupling device is designed in such a way that an axial displacement of the actuating shaft is not transmitted to the actuating device.

For this purpose, the coupling device has a slot-shaped recess on an end face of the end of the actuating shaft opposite the operating section.

The coupling device further comprises a flat driver which engages in the slot-shaped recess. The flat driver engaging in the slot-shaped recess allows the transmission of a torque from the actuating shaft to the actuating device of the open-close valves. Compensating for an axial movement the actuating shaft takes place in that the flat driver is inserted more or less far into the slot-shaped recess.

With particular advantage, the recess is arranged in a base of a third conical element which is formed on the actuating shaft in the area of the end of the actuating shaft opposite the operating section, in such a way that a tip of the third conical element points in the direction of the operating section of the actuating shaft and with a Tip of the first conical element is connected. The design of the end of the actuating shaft as a conical element has the advantage that the spatial extent of a conical element does not change when the actuating shaft is rotated. There is thus no risk of inadvertent movement of the second sliding element as a result of it inadvertently coming into contact with the third conical element.

Figur 1

eine schematische Schaltanordnung der Auf-Zu-Ventile und der Drosselstellen mit einem ersten geöffneten Auf-Zu-Ventil,

Figur 2

die schematische Schaltanordnung mit zwei geöffneten Auf-Zu-Ventilen,

Figur 3

die schematische Schaltanordnung mit dem letzten geöffneten Auf-Zu-Ventil,

Figur 4

einen schematischen Aufbau einer Gasventilanordnung mit geschlossenen Auf-Zu-Ventilen,

Figur 5

den schematischen Aufbau der erfindungsgemäßen Gasventileinheit in geschlossenem Zustand,

Figur 6

die Gasventileinheit bei geöffnetem Absperrventil,

Figur 7

die Gasventileinheit bei geöffnetem Absperrventil und geöffnetem Auf-Zu-Ventil,

Figur 8

die geöffnete Gasventileinheit mit nicht gedrückter Betätigungswelle,

Figur 9

das Absperrventil in geschlossenem Zustand,

Figur 10

das geöffnete Absperrventil,

Figur 11

das geöffnete Absperrventil mit weit gedrückter Betätigungswelle,

Figur 12

die Gasventileinheit in einer Schnittdarstellung.

Further advantages and details of the invention are explained in more detail with reference to the exemplary embodiment shown in the schematic figures. It shows

Figure 1

a schematic circuit arrangement of the on-off valves and the throttle points with a first open on-off valve,

Figure 2

the schematic switching arrangement with two open on-off valves,

Figure 3

the schematic circuit arrangement with the last open on-off valve,

Figure 4

a schematic structure of a gas valve arrangement with closed open-close valves,

Figure 5

the schematic structure of the gas valve unit according to the invention in the closed state,

Figure 6

the gas valve unit with the shut-off valve open,

Figure 7

the gas valve unit with the shut-off valve and open-close valve open,

Figure 8

the open gas valve unit with the actuating shaft not pressed,

Figure 9

the shut-off valve in the closed state,

Figure 10

the open shut-off valve,

Figure 11

the open shut-off valve with the actuating shaft pushed far,

Figure 12

the gas valve unit in a sectional view.

The Figures 1 to 3 show the switching arrangement of the on-off valves 3 (3.1 to 3.5) and the throttle points 4 (4.1 to 4.5) of the gas valve unit. The shut-off valve according to the invention is not shown here, however.

A gas inlet 1 can be seen with which the gas valve unit is connected, for example, to a main gas line of a gas cooking appliance. At the gas inlet 1, the gas provided for combustion is present at a constant pressure of, for example, 20 millibars or 50 millibars. A gas line leading, for example, to a gas burner of the gas cooking appliance is connected to a gas outlet 2 of the gas valve unit. The gas inlet 1 is connected to the inlet side of the five open-close valves 3 (3.1 to 3.5) in the present exemplary embodiment via a gas inlet space 9 of the gas valve unit. By opening the open-close valves 3, the gas inlet 1 is connected to a specific section of a throttle section 5 into which the gas flows through the open open-close valve 3. The throttle section 5 comprises an input section 7 into which the first open-close valve 3.1 opens. The further open-close valves 3.2 to 3.5 each open into a connecting section 6 (6.1 to 6.4) of the throttle section 5. The transition between the input section 7 and the first connecting section 6.1, as well as the transitions between two adjacent connecting sections 6.1 to 6.4 are each formed by a throttle point 4 (4.1 to 4.5). The last throttle point 4.5 connects the last connection section 6.4 with the gas outlet 2. The throttle points 4.1 to 4.5 have an opening cross-section that increases in sequence. The flow cross-section of the last throttle point 4.5 can be selected to be so large that the last throttle point 4.5 has practically no throttle function.

The open-close valves 3 are actuated by means of a permanent magnet 8, which is displaceable along the row of open-close valves 3. The force for opening the respective open-close valve 3 is generated directly from the magnetic force of the permanent magnet 8. This magnetic force opens the respective open-close valve 3 against a spring force.

In the switch position according to Figure 1 only the first open-close valve 3.1 is open. The gas flows through this open-close valve 3.1 from the gas inlet space 9 into the inlet section 7 and from there passes all throttle points 4 and all connecting sections 6 on the way to the gas outlet 2. The amount of gas flowing through the valve unit gives the minimum output of the connected to the gas valve unit.

Figure 2 shows the schematic switching arrangement in which the permanent magnet 8 is shifted to the right in the drawing in such a way that both the first open-close valve 3.1 and the second open-close valve 3.2 are open.

The gas flows through the opened second open-close valve 3.2 from the gas inlet space 9 directly into the first connection section 6.1 and from there via the throttle points 4.2 to 4.5 to the gas outlet 2. The gas flowing to the gas outlet 2 bypasses the open open-close Valve 3.2, the first throttle point 4.1. The gas volume flow in the switch position according to Figure 2 is therefore greater than the gas volume flow in the switch position according to Figure 1 . The gas flow to the first connection section 6.1 takes place practically exclusively via the second open-close valve 3.2. Because of the open on-off valves 3.1 and 3.2, the same pressure level prevails in the inlet section 7 as in the first connecting section 6.1. Virtually no gas therefore flows from the inlet section 7 via the first throttle point 4.1 into the first connecting section 6.1. The total gas volume flow flowing through the gas valve unit therefore practically does not change when the permanent magnet 8 continues is moved to the right in the drawing and thereby the first open-close valve 3.1 is closed when the second open-close valve 3.2 is open.

By moving the permanent magnet 8 to the right in the drawing, the open-close valves 3.3. to 3.5 successively opened and thereby the gas volume flow through the gas valve unit is gradually increased.

Figure 3 shows the schematic circuit arrangement of the gas valve unit in the fully open position. Here, the permanent magnet 8 is in its end position on the right-hand side in the drawing. The last open-close valve 3.5 is open in this position of the permanent magnet 8. In this case, gas flows directly from the gas inlet space 9 into the last connecting section 6.4 and only passes through the last throttle point 4.5 on the way to the gas outlet 2. This last throttle point 4.5 can have such a large flow cross-section that practically no throttling of the gas flow occurs and the gas can flow through the gas valve unit in a practically unthrottled manner.

Figure 4 shows schematically a structural design of a gas valve unit with a switching arrangement according to Figure 1 to 3 . The shut-off valve according to the invention is also not shown here.

You can see in Figure 4 a valve body 20 in which the gas inlet 1 of the gas valve unit is implemented. Inside the valve body 20 is a gas inlet chamber 9 connected to the gas inlet 1. Shut-off bodies 10 of the open-close valves 3 are guided in the valve body 20 so that they can move up and down in the drawing. Each shut-off body 10 is pretensioned by means of a spring 11 downward in the drawing. By means of the force of the permanent magnet 8, each shut-off body 10 can be moved against the force of the spring 11 towards the top in the drawing. The springs 11 press the shut-off bodies onto a valve sealing plate 12, so that the shut-off bodies 10 close openings 12a present in the valve sealing plate 12 in a gas-tight manner. A pressure plate 13 is arranged below the valve sealing plate 12, with openings 13 a which correspond to the openings 12 a in the valve sealing plate 12. The openings 13a in the pressure plate 13 open into openings 14a in a first gas distribution plate 14. In the drawing below the first gas distribution plate 14 there is a throttle plate 15 with a plurality of throttle openings 18. Each of the Throttle points 4.1 to 4.4 are formed by two throttle openings 18. The two throttle openings 18 belonging to a throttle point 4.1 to 4.4 are each connected to one another by means of the openings 16 a in a second gas distribution plate 16. The openings 14a in the first gas distribution plate, on the other hand, connect the throttle openings 18 lying next to one another in two adjacent throttle points 4.1 to 4.5. The last throttle point 4.5 consists of only one throttle opening 18, which opens into the gas outlet 2 of the gas valve unit via a corresponding opening 16a in the second gas distribution plate 16.

With the switch position according to Figure 4 the permanent magnet 8 is in an end position in which all open-close valves 3 are closed. The gas valve unit is thus closed as a whole. The gas volume flow is zero. Starting from this switching position, the permanent magnet 8 is moved to the right in the drawing, whereby the on-off valves 3 arranged below the permanent magnet 8 are opened.

Figure 5 shows the schematic structure of the gas valve arrangement according to the invention. The essentially rotationally symmetrical valve housing 20 with a centrally arranged actuating shaft 31 can be seen. The five open-close valves 3, for example, are arranged along a circular arc around the actuating shaft 31. At the upper end of the actuating shaft 31 is its operating section 29, onto which, for example, a rotary knob can be attached. At the lower end of the actuating shaft 31, an actuating device 25 is arranged, at the outer end of which the permanent magnet 8 is arranged. When the confirmation shaft 31 is rotated, the permanent magnet 8 moves past the open-close valves 3 along an arc. Exactly the open-close valves 3, which are located directly above the permanent magnet 8, are opened by the magnetic force of the permanent magnet 8. On top of the actuating shaft 31, for example, a rotary toggle that can be directly grasped by the operator can be attached.

A cover 30 is formed on the upper side of the valve body in which, from bottom to top, the valve sealing plate 12, the pressure plate 13, the first gas distribution plate 14, the throttle plate 15 and the second gas distribution plate 16 are arranged. The plates 12 to 16 are accessible by removing the cover 30. Access to the Plates 12 to 16 take place from above, ie from the same side from which the actuating shaft 31 protrudes from the valve housing 20.

To adapt the gas valve unit to a different type of gas, in particular the throttle plate 15 has to be replaced. In the throttle plate 15 are the throttle openings 18, which determine the size of the gas volume flow. After the cover has been removed in an upward direction, all of the panels 12 to 16 are located in the cover 30.

The arrangement for actuating the shut-off valve 40, not shown in this figure, can also be seen. This comprises a first sliding element 41 which is fastened to the actuating shaft 31. The first sliding element 41 is in contact with a second sliding element 42 which is coupled to a valve body of the shut-off valve via a connecting element 45. Both sliding elements 41, 42 are formed by conical bodies. A third conical body 43 serves as part of a coupling device 26 with which a rotary movement of the actuating shaft 31 is transmitted to the actuating device 25. The coupling device 26 essentially consists of a driver 27 which engages in a slot-shaped recess 28.

In the in Figure 5 The position shown is the gas valve unit in the fully closed position. The rotational position of the actuating shaft 31 is selected such that the permanent magnet 8 is not located below an open-close valve 3 and thus all the open-close valves 3 are closed. In addition, the actuating shaft 31 is not pressed in in the axial direction. The second sliding element 42 is in a left stop position. Due to the shape of the first sliding element 41 as a conical body, an exclusive rotational movement of the actuating shaft 31 and thus of the first sliding element 41 has no influence on the position of the second sliding element 42. For the same reason, the lower end of the actuating shaft 31 is also of a (third) conical shape Body 43 formed.

In the switching position according to Figure 5 there is no gas in the valve housing 20 of the gas valve unit due to the closed shut-off valve 40.

If the control shaft 31 is now pressed in downwards in the axial direction, the shut-off valve 40 opens and the valve housing 20 fills with gas.

This state of the gas valve unit is in Figure 6 shown. Here, the first sliding element 41 has pushed the second sliding element 42 with the connecting element 45 to the right in the drawing. The connecting element 45 acts directly on the shut-off element 44 of the shut-off valve 40 (see Figure 10 ) so that it is open. The lower area of the gas valve unit in the drawing is filled with gas (see dotted areas). On the other hand, the open-close valves 3 are still closed, so that the flow cross section of the gas valve unit is still zero.

In Figure 6 The design of the coupling device 26 with the flat driver 27 which is inserted into the slot-shaped recess 28 of the third conical body 43 can also be seen. An axial movement of the actuating shaft 31 can be compensated for by this combination of driver 27 and recess 28, so that such a movement is not transmitted to the actuating device 25 of the open-close valves 3.

Figure 7 shows a further operating position of the gas valve unit, in which the shut-off valve 40 is opened by pressing in the actuating shaft 31 and, in addition, one of the open-close valves 3 is opened by means of the permanent magnet 8. Through this open on-off valve 3, gas now also flows into the area above the on-off valve in the direction of the gas outlet 2. The shut-off valve 40 is mechanically activated via the first sliding element 41, the second sliding element 42 and the connecting element 45 in Held open.

In contrast, shows Figure 8 an operating position of the gas valve unit in which the shut-off element 44 of the shut-off valve 40 is held in the open position by means of the force of an electromagnet not shown in the present figure. The actuating shaft 32 is here in a non-depressed position, so that the first sliding element 41 does not exert any force on the second sliding element 42. The gas valve unit is in this position during ongoing operation when a flame is burning on the gas burner connected to the gas valve unit.

The type of actuation of the shut-off valve 40 is again based on Figures 9, 10 and 11 described in more detail. The first sliding element 41, the second sliding element 42, a connecting element 45 formed by a spring, the shut-off element 44 and a magnet unit 50 can be seen here. The closed rest position of the shut-off valve 40 is ensured by the spring 51 acting on the shut-off body 10.

In the representation according to Figure 9 the actuating shaft 31 is not pressed in. The shut-off valve 40 is closed by the force of the spring 51. The connecting element 45 is at a distance from the shut-off body 10.

In the switch position according to Figure 10 the actuating shaft 31 is pressed in, so that the second sliding element 42 with the connecting element 45 is shifted to the left in the drawing and the shut-off element 44 lifts off its valve seat against the force of the spring 51. The shut-off valve 40 can thereby be flowed through by gas.

In the representation according to Figure 11 the actuating shaft 31 is also pressed in, but further than in the position according to FIG Figure 10 . Consequently, the second sliding element 42 is also shifted further to the left in the drawing than in FIG Figure 10 . So that this further movement of the second sliding element 42 is not transmitted to the shut-off element 44 of the shut-off valve 40, the connecting element 45 is designed as a spring. The spring forming the connecting element 45 is, however, made much stiffer than the spring 51 of the shut-off valve 40. The design of the connecting element 45 as a spring serves in particular to avoid damage to the shut-off valve 40 when the actuating shaft 31 is pressed with excessive force.

Figure 12 shows a gas valve unit according to the invention in cross section. The gas inlet 1, which opens directly into the shut-off valve 40, is shown. Of the shut-off valve 40, the shut-off body 10, the spring 51 and the magnet unit 50 can be seen in particular.

The connecting element 45 designed as a spring is suitable for transmitting a compressive force from the second sliding element 42 to the shut-off body 10. The second Sliding element 42 slides on first sliding element 41, which is formed from actuating shaft 31.

The third conical element 43 with the coupling device 26, which transmits a rotary movement of the actuating shaft 31 to the permanent magnet 8, is located below the first sliding element 41. The permanent magnet 8 opens the open-close valve 3 located directly above it by means of its magnetic force.

REFERENCE LIST

1

Gas inlet

2

Gas outlet

3 (3.1 to 3.5)

On-off valves

4 (4.1 to 4.5)

Throttling points

5

Throttle section

6 (6.1 to 6.4)

Connection section

7th

Entrance section

8th

Permanent magnet

9

Gas inlet room

10

Shut-off device

11

feather

12

Valve sealing plate

12a

openings

13

printing plate

13a

openings

14th

first gas distribution plate

14a

openings

15th

Throttle plate

16

second gas distribution plate

16a

openings

17th

End plate

18th

Throttle openings

20th

Valve body

25th

Actuator

26th

Coupling device

27

Carrier

28

Recess

29

Operating section

30th

cover

31

Operating shaft

32

Cover plate

33

Trough housing

34

Countertop

40

Shut-off valve

41

first sliding element

42

second sliding element

43

third conical body

44

Shut-off element

45

Connecting element

50

Magnet unit

51

feather

Claims (12)

1. Gas valve unit for setting a gas volume flow supplied to a gas burner of a gas appliance, in particular a gas cooker, wherein the gas valve unit has a valve housing (20) and an actuation pin (31), an operating segment (29) of which projects from the valve housing (20) and wherein a shutoff valve (40) is configured in the valve housing (20),
   wherein at least two on-off valves (3) are configured in the valve housing (20), which are disposed along an arc around the actuation pin (31), wherein it is possible to actuate the on-off valves (3) with the aid of an actuation apparatus (25), which is coupled to the actuation pin (31) by means of a coupling apparatus (26) at an end of the actuation pin (31) within the valve housing (20), by rotating the actuation pin (31), wherein it is possible to actuate the shutoff valve (40) by axially displacing the actuation pin (31), wherein the shutoff valve (40) has a moveable shutoff element (44), and wherein a deflection apparatus is provided, which converts an axial movement of the actuation pin (31) to an axial movement of the shutoff element (44) of the shutoff valve (40) at right angles thereto.
2. Gas valve unit according to claim 1, characterised in that the movable shutoff element (44) of the shutoff valve (40) is pretensioned in the closing direction, in particular by means of spring force.
3. Gas valve unit according to claim 2, characterised in that movable shutoff element (44) of the shutoff valve (40) can be moved into an open position counter to the pretensioning by pushing the actuation pin (31).
4. Gas valve unit according to one of claims 1 to 3, characterised in that the deflection apparatus has a first slide element (41), which is disposed on the actuation pin (31) in the region of the end of the actuation pin (31) opposite the operating segment.
5. Gas valve unit according to claim 4, characterised in that the first slide element (41) is embodied as a first conical element so that a tip of the first conical element points away from the operating segment of the actuation pin (31).
6. Gas valve unit according to claim 4 or 5, characterised in that the deflection apparatus has a second slide element (42), which is in contact with the first slide element (41) at least when the actuation pin (31) is pushed.
7. Gas valve unit according to claim 6, characterised in that the second slide element (42) is configured as a second conical element, the centre axis of which is disposed essentially perpendicular to the actuation pin (31) and the tip of which points in the direction of the first slide element (41).
8. Gas valve unit according to claim 6 or 7, characterised in that the first slide element (41) and the second slide element (42) are configured and disposed so that an axial displacement of the actuation pin (31) as a result of pushing on the operating segment is converted to an axial displacement of the second slide element (42) in the direction away from the actuation pin (31).
9. Gas valve unit according to one of claims 6 to 8, characterised in that the second slide element (42) is actively connected to the shutoff element (44) of the shutoff valve (40) so that an axial movement of the second slide element (42) in the direction away from the actuation pin (31) is transferred to the shutoff element (44).
10. Gas valve unit according to one of claims 1 - 9, characterised in that the coupling apparatus (26) has a slot-type recess (28) on an end face of the end of the actuation pin (31) opposite the operating segment.
11. Gas valve unit according to claim 1 or 10, characterised in that the coupling apparatus (26) comprises a flat carrier (27), which engages in the slot-type recess (28).
12. Gas valve unit according to claim 5, 7 or 11,, characterised in that the recess (28) is disposed in a base of a third conical element (43), which is configured on the actuation pin (31) in the region of the end of the actuation pin (31) opposite the operating segment, so that a tip of the third conical element (43) points in the direction of the operating segment of the actuation pin (31) and is connected to a tip of the first conical element (41).

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