CH700084B1 - Device and method for locking and opening of the passage in a pipe. - Google Patents

Abstract

In a device (1) for blocking and opening the passage in a tube (11) by means of a within the tube (11) about an axis of rotation (20) pivotable flap (2) the axis of rotation (20) is aligned obliquely to the flap (2) , The axis of rotation (20) has, for example, an angle of inclination of approximately 45 ° relative to a cross-sectional plane arranged normal to the longitudinal axis (10) of the tube (11). The obliquely to the flap (2) aligned axis of rotation (20) allows when installing the device (1) in a wall, for example, in a design as a fire damper or smoke control, to arrange an electric drive outside the wall and without additional lever or linkage directly with a along the rotation axis (20) extending drive shaft (21) of the flap (2) to couple.

Description

Technical area

The present invention relates to an apparatus and a method for locking and opening the passage in a pipe. More particularly, the present invention relates to a device for locking and opening the passage in a pipe having a flap pivotable about a rotation axis within the pipe and a method for driving the flap in the passageway of a pipe through a wall by means of a drive mounted outside the wall.

State of the art

For blocking and opening the passage in a tube flaps are used, which are pivotable (rotatable) within the tube about an axis of rotation and thereby in an open and a closed position and in intermediate positions can be moved. Often it is advantageous to open the flaps automatically by an electric drive (motor) or to close. In flap devices for locking and opening the pipe passage in the passage area of a pipe through a wall, such as fire dampers, for blocking the pipe passage and smoke control flaps for de-smoking and subsequent blocking the pipe passage, however, has the disadvantage that an installation of the drive directly above the flap complicated installation in the (fire) wall conditionally, which on the one hand makes the maintenance of the drive difficult and on the other hand weakens the wall. To avoid installation in the wall, the axes of rotation of the flaps are coupled with levers or the like to allow the drive from outside the wall. However, these linkages are structurally complex, error-prone and must be extensively controlled by periodic inspections.

In the patent application WO 2005/053 975 a device for controlling the air flow in a ventilation pipe is described, in which a fastening web is provided in the ventilation pipe along a longitudinal plane of symmetry, which has at one end a pivot bearing for the drive axis of the air flap. Attached to the attachment web is a gear transmission coupled to the drive axle, which makes it possible to couple an electric drive at the other end of the attachment web with the axis of rotation of the air flap. As a result, when installing the flap in the passage area of a wall positioning of the drive outside the wall allows. Compared to a direct coupling and positioning of the drive over the flap, however, this solution is complicated and requires a periodic review of the gear transmission.

Presentation of the invention

It is an object of the present invention to provide a device for locking and opening the passage in a pipe and a method for driving a flap in the passage area of a pipe through a wall, which allow the positioning of an (electric) drive outside the wall without at least some disadvantages of the prior art. It is a particular object of the present invention to propose such a device for use as a fire damper or smoke control damper and such a method for driving a fire damper or smoke control damper.

According to the present invention, these objects are achieved in particular by the elements of the independent claims. Further advantageous embodiments are also evident from the dependent claims and the description.

The above objects are achieved by the present invention, in particular, that in the device for locking and opening the passage in a pipe by means of a pivotable within the tube about a rotation flap the axis of rotation of the flap is aligned obliquely to the flap. That is, the axis of rotation of the flap has an inclination angle γ to a cross-sectional plane arranged normal to the longitudinal axis of the tube. This inclination angle γ is preferably in the range of 0 ° <γ ≦ 45 °. The flap is preferably designed as a plan damper blade, but can also be configured on one side or both sides convex or concave. The axis of rotation is preferably oriented to pierce the flap substantially in a center region of the flap. The advantage of the rotational axis oriented obliquely to the flap (or to the flap leaf, respectively) is that when the device is installed in a wall, for example in an embodiment as a fire damper device or smoke extraction flap device, an (electric) drive is arranged outside the wall, for example attached to the pipe, and without additional lever, linkage or gear transmission can be coupled directly to a running along the axis of rotation drive shaft of the flap. In addition, the flap can be fixed (blocked) by a simple rotation about the axis of rotation in the closed position and thus "locked".

Preferably, the device comprises a fixed to the flap, extending along the axis of rotation drive shaft which rotatably penetrates the pipe for coupling with the outside of the pipe mounted drive.

In one embodiment, the device comprises a pivot bearing mounted on the tube for rotatably receiving a along the axis of rotation extending, connected to the flap support axis. The support shaft is designed as a separate element or as part of the drive shaft. The support shaft and the drive shaft are designed, for example, as a common shaft running along the axis of rotation, which penetrates the flap.

The flap (or the damper blade) preferably has a shape corresponding to the cross section of the tube. The tube preferably has a round cross section and the flap is configured correspondingly round, which allows a particularly simple embodiment of the flap. In an alternative embodiment, the tube has a rectangular cross-section and the flap is designed substantially correspondingly rectangular, wherein the corners of the flap are rounded in order to prevent blocking of the flap when rotating about the axis of rotation.

In one embodiment, the drive shaft has a first pressure measuring channel, which is connected via a first bore with a tube region arranged in the closed state of the flap in front of the flap. In addition, the drive shaft has a second pressure measuring channel, which is connected via a second bore with a pipe region arranged behind the flap in the closed state. The pressure measuring channels make it possible to detect pressure values on both sides of the flap and to determine the differential pressure based on this. In one embodiment, the pressure measuring channels each have holes on the same side of the flap, resulting in a pressure difference through the orientation of the holes to the flow, for example, to determine whether the flap is closed (no flow).

In a further embodiment, the drive shaft has a cavity, in the cavity a fire detector, temperature sensor and / or smoke detector is arranged, and the cavity has at least one bore in an inner region of the tube. By arranging a fire detector in the drive shaft, a separate bore in the pipe for the implementation of leads to the fire alarm can be avoided.

In addition to the device for blocking and opening the passage in a pipe, the present invention also relates to a method for driving a valve disposed in the passage region of a pipe through a wall flap for locking and opening the pipe passage by means of an outside of the wall mounted drive wherein the drive is coupled to a drive shaft oriented obliquely to the flap and attached to the flap, and the drive pivots the flap about an axis of rotation extending along the drive shaft.

Finally, the present invention also relates to an electric drive for driving a valve disposed within a pipe for blocking and opening the pipe passage flap about an axis of rotation, wherein the drive is arranged for attachment outside the pipe, and wherein the drive is arranged for a coupling with a drive shaft oriented obliquely to the flap and fastened to the flap for rotating the flap about a rotation axis running along the drive shaft, in the state of the drive fastened to the outside of the tube. The drive is particularly adapted to receive the drive shaft for (direct) coupling.

Brief description of the drawings

Hereinafter, an embodiment of the present invention will be described by way of example. The example of the embodiment is illustrated by the following attached figures: <Tb> FIG. 1a to 1c: <sep> show schematic, three-dimensional views of a device for blocking and opening the passage in a tube with a flap pivotable about a rotation axis within a round tube, with different positions of the flap. <Tb> FIG. 2a to 2c: <sep> show schematic, three-dimensional views of a device for blocking and opening the passage in a tube with a flap pivotable within a square tube about an axis of rotation, with different positions of the flap. <Tb> FIG. Fig. 3: <sep> shows a cross-sectional view of the device for blocking and opening the pipe passage with a drive which is directly coupled to a drive shaft of the flap. Fig. 4 shows a cross-sectional view of the device for blocking and opening the pipe passage with a drive which is coupled via a universal joint with the drive shaft of the flap. <Tb> FIG. Fig. 5: <sep> shows a cross-sectional view of the device for blocking and opening the pipe passage with a drive, which is coupled via a worm gear with the flap. <Tb> FIG. Fig. 6: <sep> shows a cross-sectional view of the device for blocking and opening the tube passage with a drive shaft comprising pressure measuring channels for detecting pressure values on both sides of the flap. <Tb> FIG. Fig. 7: <sep> shows a cross-sectional view of the device for blocking and opening the pipe passage with a drive shaft comprising a cavity with a fire detector.

Ways to carry out the invention

In Figs. 1a, 1b, 1c, 3, 4, 5, 6, 7, the reference numeral 1 refers to a device for locking and opening the passage in a pipe, for example, for blocking and opening the passage of fluids , in particular air, smoke or other gases or liquids through the pipe. For a better understanding, it should be noted that the device 1 shown in the figures comprises a partial region of a tube 11, which can be connected on both sides to feeding or leading-away tubes.

As shown schematically in Figs. 3, 4, 5, the apparatus 1 is adapted for installation in a wall 100 to form the passageway area of a pipe through the wall 100, for example a firewall between two rooms and / or buildings.

In Fig. 1a, 1b, 1c, the device 1 is shown with a tube 11 having a (circular) circular cross section and a flap 2 with a corresponding round shape. However, as shown schematically in FIGS. 2a, 2b, 2c, the tube 11 in one embodiment has a rectangular cross section and a flap 2 with a correspondingly rectangular shape. This different shape of the pipe cross-section and the flap 2, 2 is correspondingly applicable to the embodiments shown in Figs. 3, 4, 5, 6 and 7.

The blocking and opening of the pipe passage is made by rotating (pivoting) the flap 2, 2 about a rotation axis 20 which is aligned obliquely to the flap 2, 2. As shown in the figures, the axis of rotation 20 penetrates the flap 2, 2 in a center region Z of the flap 2, 2 and extends for example through the center of gravity of the flap 2, 2nd As shown in Figs. 3-7, the rotation axis 20 has an inclination angle γ to a normal to the longitudinal axis 10 of the tube 11 aligned cross-sectional plane q. In one embodiment of the flap 2, 2 as a plan damper blade, the axis of rotation 20 is thus aligned with the inclination angle γ to the flap 2, 2. The inclination angle γ is greater than zero and preferably less than 45 °. One skilled in the art will understand, however, that larger angles of inclination, e.g. 50 ° -60 °, are possible. In the example of FIGS. 1a-1c, the axis of rotation 20 of the circular flap 2 runs in a longitudinal plane extending through the longitudinal axis 10 of the tube 11. In the example of Fig. 2a-2c, however, the axis of rotation 20 of the rectangular flap 2 is also aligned obliquely with respect to this longitudinal plane.

As shown in FIGS. 1a, 1b, 1c and 3-7, the device 1 has a connected to the flap 2, along the axis of rotation 20 extending drive shaft 21. The device 1 comprises a pivot bearing 13 mounted on the pipe 11, by means of which the drive shaft 21 is mounted in the pipe 11 and the drive shaft 21 rotatably penetrates the wall of the pipe 11. In a preferred embodiment, the flap 2 is also rotatably supported on the inner wall of the tube 11 via an (optional) support shaft 22 running along the axis of rotation 20 via a further rotary bearing 12. In various embodiments, the drive shaft 21 and the support shaft 22 are two separate attached to the flap parts, or the support shaft 22 is designed as part of the drive shaft 21 which penetrates the flap 2, as shown in particular in Figs. 3-7.

In Figs. 1a and 2a, a round or rectangular flap 2, 2 is shown in the closed position, which does not pass through a volume flow.

In Figs. 1b and 2b, the round or rectangular flap 2, 2 is shown in a partially open position, which passes a partially limited volume flow. In this position, the flap 2, 2 is guided by a rotation about the axis of rotation 20, wherein the angle of rotation depends on the intended inclination angle γ. For example, with an inclination angle γ of 45 °, a rotation of 90 ° about the rotation axis 20 brings the round flap 2 to a half-opened position. In the example of the rectangular flap 2, the inclination angle γ is smaller than 45 °, so that the rectangular flap 2 is almost closed at a rotation of 90 ° about the rotation axis 20.

In Figs. 1c and 2c, the round or rectangular flap 2, 2 is shown in a fully open position, which allows the volume flow indefinitely. In the fully open position, the round flap 2 is aligned parallel to the longitudinal axis 10 of the tube 11. In this position, the flap 2, 2 is guided by a rotation about the axis of rotation 20, which, starting from the closed position at an intended inclination angle γ of 45 °, for example, 180 °.

As can be seen in Figs. 2a, 2b and 2c, the corners 23, 24, 25, 26 of the rectangular flap 2 are rounded so that a rotational movement of the flap 2 in the rectangular tube 11 about the rotation axis 20 without Blocking on the inner walls of the tube 11 is made possible.

In principle, the flap 2, 2 can be rotated manually via the drive shaft 21. However, the drive shaft 21 is preferably coupled to an electric drive (motor) 3, 3, 3 mounted outside the tube 11. The drive 3, 3, 3 is preferably mounted outside the wall 100 on the pipe and fixed to the outside of the pipe, e.g. on the portion of the tube 11 of the device 1 or on a connected to the sub-area supplying respectively wegführenden tube.

In the embodiment according to FIG. 3, a drive 3 is used, which is set up to directly receive the drive shaft 21 for coupling and to drive it without further gearboxes, linkages or the like.

In the embodiment according to FIG. 4, a drive 3 is used, which is coupled to the drive shaft 21 via a universal joint 30.

In the embodiment according to FIG. 5, a drive 3 is used which, for coupling to the drive shaft 21, comprises a worm gear 31 with a worm shaft 32 and a worm wheel 33. The worm gear 31 is preferably adaptable to the inclination angle γ of the rotation axis 20 or drive shaft 21, for example by adjusting the worm gear 31 by means of a rotation Δα about the axis of rotation of the worm shaft 31. The worm wheel 33 is fixed to the drive shaft 21, for example by means of screw (s) and / or bolts.

In the embodiment according to FIG. 6, the drive shaft 21 is designed as a dynamic pressure pipe. The drive shaft 21 comprises pressure measuring channels 4, 5, which are connected via bores 40, 50 with the interior of the tube 11. In the closed position of the flap 2, the pressure measuring channel 5 is connected via the bore 50 with the front tube portion 111, which is arranged in front of the flap 2 and the volume flow S feeds. In addition, in the closed position of the flap 2, the pressure measuring channel 4 is connected via the bore 40 with the rear tube portion 112, which is arranged after the flap 2 and the volume flow S leads away. As shown schematically in FIG. 6, the pressure measuring channels 4, 5 are connected to a processing module 6 that is set up, depending on the pressure values detected via the pressure measuring channels 4, 5 and the flap angle (inclination of the flap 2 with respect to the cross-sectional plane q) to determine the current differential pressure. In one embodiment, the pressure measuring channels 4, 5 each have holes 40, 50 in the front tube portion 111, or in the rear tube portion 112, or on both sides of the flap 2, wherein a pressure difference results from the alignment of the bores 40, 50 to the flow S. For example, to determine whether the flap 2 is closed (missing volume flow). The processing module 6 includes, for example, pressure sensors for determining the pressure values on both sides of the flap 2 as well as an electronic and / or programmed calculation module for calculating the volume flow.

In the embodiment according to FIG. 7, the drive shaft 21 comprises a cavity 8 which is connected to the inner region 110 of the tube 11 via at least one bore 9. In the cavity 8, a fire detector 80 is mounted, e.g. a temperature sensor or a smoke detector, which is connected via signal lines 71 to a signaling module 7. The signaling module 7 is configured, for example, to trigger an alarm and / or the drive 3, 3, 3 to close or open the flap 2, 2, so that, for example, the flap 2, 2 closed a fire damper device and / or the flap 2, 2 of a smoke control device is opened. The signaling module 7 is designed, for example, as an electronic and / or programmed logic module.

Claims (15)

Device (1) for blocking and opening the passage in a tube (11), comprising a flap (2, 2) pivotable within a tube (11) about an axis of rotation (20), characterized in that the axis of rotation (20 ) is aligned obliquely to the flap (2, 2) and the axis of rotation (20) has an inclination angle (γ) to a normal to the longitudinal axis (10) of the tube (11) arranged cross-sectional plane (q) and one on the flap (2, 2) fixed, along the axis of rotation (20) extending drive shaft (21) is provided, which rotatably penetrates the tube (11) for coupling with a outside of the tube (11) to be mounted drive (3, 3, 3). 2. Device (1) according to claim 1, characterized in that the axis of rotation (20) has an inclination angle (γ) to a normal to the longitudinal axis (10) of the tube (11) arranged cross-sectional plane (q) which is less than or equal to 45 ° is. 3. Device (1) according to one of claims 1 or 2, characterized in that the axis of rotation (20) is oriented so that it the flap (2, 2) in a central region (Z) of the flap (2, 2 ) pierces. 4. Device (1) according to one of claims 1 to 3, characterized by a tube (11) mounted pivot bearing (12) for rotatably receiving a along the axis of rotation (20) extending, with the flap (2, 2) connected support axis (22). 5. Device (1) according to one of claims 1 to 4, characterized by a flap (2, 2) penetrating, along the axis of rotation (20) extending drive shaft (21). 6. Device (1) according to claim 5, characterized in that the drive shaft (21) has a first pressure measuring channel (5), which via at least one first bore (50) with a in the closed state of the flap (2, 2) the valve (2, 2) arranged pipe region (111) is connected, and that the drive shaft (21) has a second pressure measuring channel (4), which via at least one second bore (40) with a closed state of the flap (2, 2) behind the flap (2, 2) arranged pipe region (112) is connected. 7. Device (1) according to claim 5, characterized in that the drive shaft (21) has a plurality of pressure measuring channels (5), each having at least one bore (50) with a closed state of the flap (2, 2) in front of the Flap (2, 2) arranged pipe portion (111) are connected, which pipe portion (111) supplies the volume flow (S). 8. Device (1) according to one of claims 5 to 7, characterized in that the drive shaft (21) has a cavity (8) that in the cavity (8) at least one fire alarm (80), smoke detector and temperature sensor is arranged, and that the cavity (8) has at least one bore (9) in an inner region (110) of the tube (11). 9. Device (1) according to one of claims 1 to 8, characterized in that the flap (2, 2) has a cross section of the tube (11) corresponding shape. 10. Device (1) according to one of claims 1 to 9, characterized in that the tube (11) has a round cross section and that the flap (2) is configured correspondingly round. 11. Device (1) according to one of claims 1 to 9, characterized in that the tube (11) has a rectangular cross-section and that the flap (2) is configured substantially correspondingly rectangular, wherein the corners of the flap (2 ) Are rounded to prevent blocking of the flap (2) when rotating about the axis of rotation (20). 12. Device (1) according to one of claims 1 to 11, characterized in that it comprises an outside of the pipe (11) mounted electric drive (3, 3, 3), which for rotating the flap (2, 2 ) Is coupled to the axis of rotation (20) with a along the axis of rotation (20) extending drive shaft (21) of the flap (2, 2). 13. Use of the device (1) according to any one of claims 1 to 12, as a fire damper device for blocking the passage, or as a smoke extraction device for de-smoking, for installation in a wall. 14. A method for driving a in the passage region of a pipe (11) through a wall (100) arranged flap (2, 2) for locking and opening the passage in the tube (11) by means of a outside of the wall (100) mounted drive (3 , 3, 3), characterized in that the drive (3, 3, 3) with an obliquely to the flap (2, 2) aligned and on the flap (2, 2) fixed drive shaft ( 21), wherein an axis of rotation (20) running along the drive shaft (21) has an inclination angle (γ) to a cross-sectional plane (q) normal to the longitudinal axis (10) of the tube (11), and in that the drive (3, 3, 3), the flap (2, 2) about the along the drive shaft (21) extending pivot axis (20) pivots. 15. Electric drive (3, 3, 3) for driving a within a tube (11) for locking and opening the passage in the tube (11) arranged flap (2, 2) about an axis of rotation (20), wherein the drive (3, 3, 3) is designed for fastening outside the pipe (11), characterized in that the drive (3, 3, 3) is set up for coupling with an angle to the flap ( 2, 2) and fixed to the flap (2, 2) drive shaft (21) for rotating the flap (2, 2) about a along the drive shaft (21) extending axis of rotation (20) in the outside of the tube (11 ) fixed state of the drive (3, 3, 3), wherein along the drive shaft (21) extending axis of rotation (20) has an inclination angle (γ) to a normal to the longitudinal axis (10) of the tube (11) arranged cross-sectional plane ( q).