EP2463598B1 - Control butterfly valve device for an anti-smoke differential pressure unit and method for controlling a control butterfly valve device - Google Patents

Description

The invention relates to a control flap device for a smoke protection differential pressure system according to claim 1 and to a method for controlling a control flap device according to claim 13.

Such butterfly valves devices are basically known. For example, the EP 1 701 108 A2 describes a control valve device with a pivotally mounted about an axis of rotation in a housing control valve and a closing spring. The closing spring is provided in order to be able to convert the control flap into a closed position. The closing moment varies in such a way that the safest possible operation of the control flap should be ensured. However, the prior art device is found prone to failure.

The invention has for its object to ensure a comparatively high safety of the butterfly valve device in operation at a relatively low production cost.

This object is achieved by a control flap device for a smoke protection differential pressure system according to claim 1 and a method for controlling a control flap device according to claim 13.

In particular, the object is achieved by a control flap device for a smoke protection differential pressure system, with a housing and at least one pivotally mounted about a rotation damper, solved, wherein the control flap is coupled in the closed state with at least a first and at least a second return device, wherein the first and second return device are configured such that restoring forces, which can be applied by the first and second return device, counteract an opening of the control flap up to a predetermined opening pressure acting on the control flap, wherein a decoupling device is provided to decouple the first return device from the control flap, as soon as the control flap is opened by a predetermined opening angle.

An essential idea of the invention is that two return devices are provided, of which one can be decoupled. As a result, when the predetermined opening angle is exceeded, it can be achieved in a simple manner that a total applied closing torque is reduced. This is in particular no complex design of a joint piece, such as in the EP 1 701 108 A2 , necessary. The fact that the predetermined opening angle can be set relatively easily, the safety is further increased.

It is possible to provide at least one second decoupling device, with which the second return device can be decoupled. This may preferably be done at a second predetermined opening angle, which is more preferably greater (or less) than the first predetermined opening angle. In this sense, even more decoupling devices for further restoring devices are conceivable.

In a preferred embodiment, however, the second restoring device (or possibly further restoring devices) is (are) designed such that over the entire possible pivoting range of the control flap a closing moment is ensured by the second restoring device (in particular also in a maximum open position).

Preferably, the first return device comprises at least a first spring and / or the second return device at least one second spring to apply the restoring force. Preferably, the effect of a spring force of the first and / or second spring is adjustable. In any case, the restoring force can be constructive be particularly easy to apply and possibly (with adjustable springs) are varied in a simple manner, which further reduces the design effort. In particular, an adjustability of the springs also further increases the safety of the butterfly valve device.

In a preferred embodiment, the decoupling device comprises a locking device in order to lock the at least one first return device, in particular the at least one first spring device, in a decoupled state. Such a locking can be done in particular by a latching, for example by engaging a detent in or around a protruding element. The decoupling can be structurally comparatively simple.

In a further preferred embodiment, the decoupling device, in particular the locking device, at least a third return device, comprising preferably at least a third spring, to support a decoupling, in particular locking on. This further simplifies the implementation of the decoupling or locking, which in particular reduces the costs during manufacture.

Preferably, the decoupling device comprises at least one, more preferably asymmetric, disc which is torque-connected to at least one control flap, such that a pivoting movement of the control flap over the disc causes a decoupling of the first return device in the range of the predetermined opening angle. This ensures a structurally simple and safe decoupling.

In a preferred embodiment, the decoupling device at least a first and a second, rotatably mounted on the housing lever, wherein the first lever, when the predetermined opening angle is reached, engages in the second lever to lock the first return device. This measure is structurally particularly simple and allows safe operation of the butterfly valve device. By "lever" is here and below generally understood an element which is pivotable and is suitable by pivoting to transmit an effect. In particular, the lever may be rod-shaped or strip-shaped or comprise at least one (possibly several) rod (s) or strip (s).

The first regulating flap device is preferably in operative connection with the first lever and / or the third spring is in operative connection with the second lever. In this context, "immediate" is to be understood as meaning that the elements mentioned are in direct contact for the transmission of an effect.

Preferably, at least two flaps are provided which are further preferably connected to one another via a connecting device such that a pivoting of a control flap triggers a pivoting of the other control flap. As a result, can be controlled by the control of the pivoting only one control valve a plurality of control valves, which simplifies the control and thus makes relatively safe.

Preferably, a third lever and / or a second disc is provided, which is in operative connection with the second return device such that a torque can be applied to at least one control flap, which, in particular independent of the opening angle, supports an opening of the control flap. Such a solution is comparatively simple in terms of design.

Preferably, the decoupling device and / or the first return device on the one hand, and the second return device on the other hand, with different control valves directly in operative connection. As a result, the various components for the provision of a plurality of control valves within the control valve device can be distributed favorably, which in particular allows a compact design. In general, this reduces the footprint and design effort. In this context, "direct" should be understood to mean that the operative connection is at least not effected via a connecting device which connects the control valves to one another, and in particular takes place only via a lever.

Preferably, the decoupling device, in particular the locking device, is designed such that the decoupling, in particular locking, is canceled when falling below a predetermined opening angle. The predetermined opening angle when falling below may correspond to the predetermined opening angle when exceeding or opening. However, different opening angles can also be realized if the speed is exceeded or fallen short of. In any case, a safe reclosing of the Regulating flap device ensures what allows a relatively safe operation.

In a development, the, in particular asymmetric, disc and the second lever are designed and arranged such that a pivoting of the disc when falling below the predetermined opening angle pivots the second lever such that the decoupling, in particular locking is released. As a result, the safety of the butterfly valve device is increased when re-closing.

The above object is achieved independently by a method for controlling a control flap device for a smoke protection differential pressure system, in particular of the type described, wherein at least one first and at least one second control flap are provided, which are adapted to an opening of the control flap to a predetermined counteract opening pressure acting on the control flap, wherein the first return device is decoupled when the control flap is opened by a predetermined opening angle. With regard to the advantages, reference is made to the regulating flap device described above. The first return device is preferably locked in the decoupled state or the decoupling enabled by a lock. Further preferably, when falling below a predetermined opening angle, the decoupling, in particular locking, canceled again. Further embodiments of the method can be taken directly from the device already described.

Further embodiments emerge from the subclaims.

The invention will also be described in terms of further features and advantages based on embodiments, which are explained in more detail with reference to the drawings.

Fig. 1

eine schematische Seitenansicht einer ersten Ausführungsform der Regelklappenvorrichtung;

Fig. 2

eine Vergrößerung des Ausschnittes A aus Fig. 1;

Fig. 3

eine Vergrößerung des Ausschnittes B aus Fig. 1;

Fig. 4

einen Ausschnitt einer schematischen Rückansicht der ersten Ausführungsform gemäß Fig. 1;

Fig. 5

eine Vergrößerung des Ausschnittes C aus Fig. 4;

Fig. 6

eine schematische Seitenansicht einer zweiten Ausführungsform der Regelklappenvorrichtung; und

Fig. 7

einen Ausschnitt einer schematischen Rückansicht der zweiten Ausführungsform gemäß Fig. 6.

Hereby show:

Fig. 1

a schematic side view of a first embodiment of the control valve device;

Fig. 2

an enlargement of the section A from Fig. 1 ;

Fig. 3

an enlargement of the section B from Fig. 1 ;

Fig. 4

a section of a schematic rear view of the first embodiment according to Fig. 1 ;

Fig. 5

an enlargement of the section C from Fig. 4 ;

Fig. 6

a schematic side view of a second embodiment of the control valve device; and

Fig. 7

a section of a schematic rear view of the second embodiment according to Fig. 6 ,

In the following description, the same reference numerals are used for the same and like parts.

Fig. 1 shows a schematic side view of a first embodiment of the control valve device. The regulating flap device comprises a plurality of (specifically five) regulating flaps 101 to 105 (see FIG Fig. 4 , The detail of a schematic rear view of the first embodiment according to Fig. 1 shows). The control valves 101 to 105 are mounted in a (preferably cuboid) housing 110 via bearing shafts, wherein the control flap 102 is mounted on the housing 110 via a first bearing shaft 132 and the control flap 105 via a second bearing shaft 135 (the numbering "first" and " second "does not correspond to the spatial arrangement). In the following, the control flap 102 is referred to as the first control flap and the control flap 105 as the second control flap. The remaining bearing shafts are identified by the reference numeral 130.

The bearing shafts 130, 132, 135 are on a housing side (which in Fig. 1 can be seen, if necessary, this can also be the case on the other side of the case), each with a first connection element 140 connected torque-locking. The first connecting elements 140 are formed, for example, cuboid. The first connecting elements 140 in turn are interconnected by a second connecting element 150. The first connecting elements 140 are pivotable relative to the second connecting element 150 (that is, not torque-locking). Furthermore, the first connecting elements 140 are arranged at a distance from the housing wall shown by way of bearing holders 160. to allow a comparatively simple pivoting of the first connecting elements 140 relative to the housing 110. The bearing holder 160 are concretely screwed as a single strips. It is also a continuous bar conceivable.

By the first connecting elements 140 and the second connecting element 150, a pivoting of one of the control valves 101 to 105 leads to a pivoting of the first connecting elements 140 and a translational displacement of the second connecting element 150 (in FIG Fig. 1 upward or downward), wherein the second connecting element 150 in turn transmits a torque to the further first connecting elements 140 and the other control valves 101 to 105. As a result, particularly a particularly synchronous pivoting of the control valves can be achieved.

The first bearing shaft 132 and the second bearing shaft 135 are formed extended relative to the other bearing shafts 130. The following description initially relates to the first bearing shaft 132. At this a disk 170 is provided, which is provided torque-locking on the first bearing shaft 132. Thus, the disc 170 is also torque-connected to the first control valve 102.

The disc 170 is asymmetrically constructed (approximately L-shaped) with one end 171 (see FIG Fig. 2 ) of a first leg 173 of the disc 170 is in contact with a first lever 180. This first lever 180 is pivotally mounted on the housing 110 at its proximal end 181 and is connected at its distal end 182 to a first spring 190. This first spring 190 is connected at its first lever 180 opposite end 191 to the housing and provides a pulling force on the first lever 180 so that this in the position according to FIG Fig. 1 is pressed against the end 171 of the disc 170 and thus transmits such torque to the disc 170 that a closing torque is transmitted to the control valve 102. This closing moment is transmitted via the connecting elements 140, 150 to the other control valves 101, 103 to 105. A connection of an end 192 of the first spring 190 resting against the first lever 180 with the first lever 180 is realized via an eyelet 193 of the spring 190.

Increases now acting on the control valves 101 to 105 pressure, also increases by acting on the control valves 101 to 105 opening torque. When exceeding one by the first spring 190 and a second Spring 200 provided closing moment open the control valves 101 to 105 (on the effect of the second spring 200 will be discussed in more detail below).

As soon as the control valves 101 to 105 turn out of their closed position, the disk 170 or its end 171 is also rotated via the torque-locking connection. The end 171 of the disc 170 in turn pivots the first lever 180 against the spring force of the first spring 190, so that at the predetermined opening angle, a second lever 210 with the first lever 180 is locked. Specifically, the second lever 210 is approximately U-shaped and comprises on a first U-leg 212 a protruding from this locking lug 211. This latch 211 is by a third spring 220 (which is designed as a compression spring) in the direction of the distal end 182nd of the first lever 180 is pressed. In this case, the locking lug is arranged such that it at a predetermined pivoting position of the first lever 180, which corresponds to a predetermined opening angle of the control valves 101 to 105, slides past the distal end 181 and rests against one side of the first lever 180, on which also the first Spring 190 attacks. As a result, the first spring 190 is decoupled or locked by the locking lug 211.

In such a (in Fig. 1 The third spring 200 causes a tensile force on the third lever 230, so that a closing torque acts on the second control valve 105, since the third lever 230 torque-locking is connected to the second bearing shaft 135 and thus the second control valve 105.

As the section B according to Fig. 3 can be removed, a point 201 of the second spring 200 on the third lever 230 is variable. Specifically, the distance from the point of application 201 of the second spring 200 to the second bearing shaft 135 is variable, so that a particularly simple generated by the second spring 200 closing torque can be varied. This makes it particularly easy to adjust the control flap device.

In the (in Fig. 1 not shown) state, in which the first spring 190 is locked, only a relatively small pressure acting on the control valves 101 to 105 pressure is required to leave the control valves in their open position. However, if the pressure is significantly reduced (for example, by opening a landing door in a stairwell), the closing moment of the second spring 200 allows resealing the control valves 101 to 105 Disc 170 in the direction of its initial position according to Fig. 1 turned. To cancel the lock again, a pin 172 is provided on the disc 170, which comes into abutment with a second U-leg 213 of the (U-shaped) second lever 210 at a predetermined pivot position and the second lever against the force of the third spring 220th pivoted so that the distal end 182 of the first lever 180 is released and thus the locking of the first spring 190 is canceled again. As a result, the first spring 190 acts again on the first lever 180 on the disc 170 and on the control valves 101 to 105. The control valves 101 to 105 are thus blocked against an (unintentional) opening.

The 6 and 7 show a second embodiment of the control valve device. This corresponds to the following differences according to the first embodiment according to Fig. 1 to 5 ,

A third spring (see the third spring 220 in FIG Fig. 2 ) is not provided (but may alternatively be provided).

Instead of the third lever 230, a second disc 240 is provided, which also acts as a lever. This second disc 240 is torque-connected to one of the damper blades 101 to 108. Overall, in contrast to the embodiment according to Fig. 1 eight control valves 101 to 108 before. The control flap 107 is in Fig. 6 (For example, for all control valves 101 to 108) shown in dashed lines, since it is arranged behind the housing wall shown. The second disc 240 is concretely connected in a torque-locking manner to the bearing shaft 136, which is referred to here as the second bearing shaft.

In turn, two springs engage the second disk 240. A second spring 200 acts on the disc 240 with a closing moment, whereas a fourth spring 250 generates an opening moment. However, the sum of the torques provided by the second spring 200 and the fourth spring 250 is such that a total of closing torque results. That is, as soon as a pressure acting on the control valves 101 to 108 decreases or decreases entirely to (practically) zero (for example, when a door in the stairwell is opened), the control valves 101 to 108 are replaced by the second disk 240 and below the predetermined Angle also by the first disk 170 and the first spring 190 acting on this returned to its closed position.

By the arrow 260, a pivoting of the control flaps is symbolized.

Overall, it is ensured that especially when a door in the staircase opens (or generally the pressure decreases), the construction completely closes again. This improves the safety of the butterfly valve device.

The control flap device is particularly suitable for (controlled) opening a closed staircase. If several floors lying on top of each other are connected via a common staircase, it is ensured in case of fire in one floor that the smoke from the fire does not flow over the common stairwell to the other floors. On the other hand, it is also ensured that the construction opens on closed floors, so that there is no overpressure inside the staircase, which prevents an opening of the landing doors.

According to the FIGS. 1 to 7 the control flap device is arranged vertically. Should the device be mounted rotated on a wall by 90 °, weight forces would not act against the force of gravity when opening and closing the individual control valves 101 to 105 or 101 to 108 and the second connecting element 150. In that case, the third lever 230 may not be asymmetrically connected to the second bearing shaft 135, as in the described embodiments, but may be mounted centrally. The second spring 200 could continue to be connected to one side of the third lever 230 and serve to close the control valve device. On the other side of the second bearing shaft 135, a further spring could then be connected to the third lever 230. This would support the opening with a pending overpressure on the individual control valves 101 to 105 or 101 to 108.

The predetermined opening angle is preferably at least 15 °, more preferably at least 30 ° and / or preferably at most 60 °, more preferably at most 45 °.

It should be noted at this point that all the above-described parts taken alone and in any combination, in particular the details shown in the drawings, are claimed as essential to the invention. Changes are familiar to the person skilled in the art.

LIST OF REFERENCE NUMBERS

101 to 108

control valves

110

casing

130

bearing shaft

132

first bearing shaft

135

second bearing shaft

136

second bearing shaft

140

first connecting element

150

second connecting element

160

storekeeper

170

disc

171

The End

172

pen

173

first leg

180

first lever

181

proximal end

182

distal end

190

first spring

191

The End

192

The End

193

eyelet

200

second spring

201

attackpoint

210

second lever

211

locking lug

212

first U-thigh

213

second U-leg

220

third spring

230

third lever

240

second disc

250

fourth spring

260

arrow

Claims (15)

1. A control butterfly valve device for an anti-smoke differential pressure unit, having a housing (110) and at least a control butterfly valve (101 to 108) supported to be pivotable about an axis of rotation,
   wherein, in the closed state, the control butterfly valve (101 to 108) is coupled with at least one first (190) and at least one second restoring device (200),
   wherein the first (190) and second restoring device (200) are formed such that restoring forces, that are applicable by the first (190) and second restoring device (200), counteract opening of the control butterfly valve (101 to 108) up to a predetermined opening pressure acting upon the control butterfly valve (101 to 108),
   characterized in that
   a decoupling device is provided to decouple the first restoring device (190) from the control butterfly valve (101 to 108), once the control butterfly valve (101 to 108) is opened by a predetermined opening angle.
2. The control butterfly valve device according to claim 1,
   characterized in that
   the first restoring device comprises at least one first spring (190) and/or the restoring device comprises at least one second spring (200) in order to apply the restoring force.
3. The control butterfly valve device according to claim 1 or 2,
   characterized in that
   the decoupling device comprises a locking device in order to lock the at least one restoring device (190), in particular the at least one first spring (190) in the decoupled state.
4. The control butterfly valve device according to any one of the preceding claims,
   characterized in that
   the decoupling device, in particular the locking device, includes at least one third restoring device (220), preferably comprising at least one third spring (220) for assisting in decoupling, in particular locking.
5. The control butterfly valve device according to any one of the preceding claims,
   characterized in that
   the decoupling device comprises at least one preferably asymmetrical disc (170) which is connected with the at least one control butterfly valve (101 to 108) in a torque-fit manner such that a pivoting movement of the control butterfly valve (101 to 108) causes the first restoring device (190), via the disc (170), to be decoupled at a predetermined opening angle.
6. The control butterfly valve device according to any one of the preceding claims,
   characterized in that
   the decoupling device includes at least one first (180) and one second lever (210) supported on the housing (110) so as to be rotatable, wherein the first lever (180), when the predetermined opening angle is reached, snaps into the second lever (210) in order to snap the first restoring device (190) into place.
7. The control butterfly valve device according to any one of the preceding claims,
   characterized in that
   the first restoring device (190) is directly in operative connection with the first lever (180) and/or the third spring (220) is in operative connection with the second lever (210).
8. The control butterfly valve device according to any one of the preceding claims,
   characterized in that
   at least two control butterfly valves (101 to 108) are provided, which are preferably interconnected via a connection device (140, 150) such that pivoting of the one control butterfly valve (101 to 108) triggers pivoting of the second control butterfly valve (101 to 108).
9. The control butterfly valve device according to any one of the preceding claims,
   characterized in that
   a third lever (230) and/or a second disc (240) are/is provided in operative connection with the second restoring device (200) such that a torque is applicable to at least one control butterfly valve (101 to 108), which torque assists in opening the control butterfly valve (101 to 108), in particular independent of the opening angle.
10. The control butterfly valve device according to any one of the preceding claims, in particular according to claim 8 or 9,
    characterized in that
    the decoupling device and/or the first restoring device (190), on the one hand, and the second restoring device (200), on the other, are directly in operative connection with various control butterfly valves (101 to 108).
11. The control butterfly valve device according to any one of the preceding claims,
    characterized in that
    the decoupling device, in particular the locking device, are formed such that the decoupling device, in particular the locking device are disabled when a predetermined opening angle is fallen below.
12. The control butterfly valve device according to any one of the preceding claims, in particular according to claim 11,
    characterized in that
    the in particular asymmetrical disc (170) and the second lever (180) are formed and arranged such that, when the predetermined opening angle is fallen below, pivoting of the disc (170) pivots the second lever (210) such that the decoupling, in particular the locking is disabled.
13. A method for controlling a control butterfly valve device for an anti-smoke differential pressure unit, in particular according to any one of the preceding claims, wherein at least one first (190) and at least one second restoring device (200) will be provided, which are formed to counteract a predetermined opening pressure acting upon the control butterfly valve,
    characterized in that
    the first restoring device (190) will be decoupled when the control butterfly valve (101 to 108) is opened by a predetermined opening angle.
14. The method for controlling a control butterfly valve device according to claim 13,
    characterized in that
    the first restoring device, in particular a first spring (190) will be locked in the decoupled state.
15. The method for controlling a control butterfly valve device according to any one of claims 13 or 14,
    characterized in that
    the decoupling, in particular locking is disabled when a predetermined opening angle is fallen below.

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