• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention discloses a shut-off device (1) for closing a flow channel for air and / or gaseous media, comprising a flap housing (2) with a flap housing channel (4) and a butterfly valve (10) in the flap housing channel (4) on a Swivel axis (14) is pivotally mounted. Along the periphery of the butterfly valve (10), a seal (12) is arranged. The butterfly valve (10) is pivotable between an open position and a closed position, wherein in the open position of the butterfly valve (10) the valve housing channel (4) is flow-permeable, and wherein and in the closed position of the butterfly valve (10) this closes the valve housing channel (4), so that the flap housing channel (4) is impermeable to flow. According to the invention, the flap housing channel (4) and the butterfly valve (10) have an elliptical cross section. As a result, the torque required for pivoting the butterfly valve between the open position and the closed position is reduced.
    公开号:AT512394A4
    申请号:T317/2012
    申请日:2012-03-15
    公开日:2013-08-15
    发明作者:Siegfried Geldner
    申请人:Geldner；
    IPC主号:
    专利说明:

    Shut-off device for closing a flow channel
    The present invention relates to a shut-off device for closing a flow channel according to the preamble of claim 1.
    Shut-off devices for closing a flow channel are also referred to as fire dampers. Fire dampers are used for example in ventilation ducts and flue ducts that represent flow channels and connect individual rooms or building sections with each other and / or, for example, with a ventilation or air conditioning.
    In normal operation, air, or more generally a gaseous medium, should be impeded as little as possible in its flow between two rooms or building sections by means of a fire damper inserted or installed in a flow duct. In the event of a fire or smoke in a room or in a building section, however, a fire damper should prevent an exchange of air or gaseous media between the spaces interconnected by the flow channel, so that heat and / or smoke does not escape from one room to another expand or spread over the flow channel with this connected space.
    A fire damper typically includes a damper housing with a damper housing duct and a butterfly valve pivotally mounted therein about a pivot axis. The butterfly valve is pivotable between an open position in which the fire damper is flow-permeable, and a closed position in which the fire damper is fluid-impermeable. To improve the sealing effect in the closed position, a seal is usually arranged on the circumference of the butterfly valve, by means of which a necessary gap between the periphery of the butterfly valve and the inner wall of the valve body to be sealed in the closed position of the butterfly valve. In addition, a flexible band of intumescent material may be provided on the inner wall of the flap housing, which comprises, for example, expanded graphite base, and which foams under high pressure under the action of heat and forms a pressure-resistant foam in the event of fire.
    In square fire dampers with angular flap housing channels and correspondingly shaped square shut-off valves, the corner areas of the flap housing channels by means of seals are very difficult to seal and with unsatisfactory tightness. Furthermore, according to geometrically shaped, usually rectangular fire dampers have the disadvantage that at a certain angular position of the butterfly valve in the valve housing channel shortly before the closed position of the butterfly valve, the circumferentially arranged seal over its entire two gegenüberlie- * · *
    3 ing transverse extensions simultaneously come into contact with the inner wall of the valve body, since the corresponding transverse sides of the butterfly valve are rectilinear (not curved). 5
    This has the consequence that from the angular position of the butterfly valve, in which the seal has contact with the inner wall of the valve body channel for further pivoting of the butterfly valve in the closed position a very large torque must be applied, since the seal over its entire transverse extent to one on the other hand, the static friction between the seal and the inner wall of the flap housing channel must be overcome, whereby the static friction increases with the contact surface between the seal and the inner wall of the flap housing channel. On the other hand, a very large torque must be applied to the transfer of the butterfly valve from the closed position to the open position for the same reasons. Therefore, an oversized drive motor must be used with a corresponding geometric design of the fire damper for a motorized pivoting of the butterfly valve. In order to reduce the torque required for closing or opening a fire damper, it is known from the prior art to use fire dampers with a circular cross-sectional geometry. Both the flap housing channel and the butterfly valve each have a circular cross-sectional shape. Therefore, the seal arranged on the circumference of the butterfly valve comes to the 4 at a predetermined angular position (in the vicinity / the region of the closed position)
    Flap housing channel in contact only at two opposite points. In a further pivoting of the butterfly valve in the direction of the closed position then successively more part-circular or arcuate sealing portions come into contact with the valve housing channel, so that the closing of the shut-off valve torque slowly and steadily increases, the torque required to overcome the static friction is constant and increases steadily proportional to the contact surface and reaches its highest value when approaching the closed position, whereas the torque to overcome the deformation of the sealing lip is variable and only partially acts when swiveling the butterfly valve and is not additive.
    Since the ratio of the circumference to the area enclosed by the circumference in a circle is cheaper (smaller) than in a rectangle or a square, the torque to be applied for closing or opening the butterfly valve with a circular cross-sectional geometry is smaller. Due to a corresponding geometric design of the fire damper, a drive motor can be reduced in size compared to a fire damper with a rectangular cross-sectional geometry.
    When installing a fire damper with a circular cross-section in a flow channel · with rectangular or square cross section, however, the fire damper has the disadvantage that the cross-sectional area of the damper housing channel is substantially smaller than the cross-sectional area of the flow channel. This in turn has turbulence of the air transported in the flow channel in the open state of the fire damper for • •
    5 ge, which on the one hand generates an undesirable flow noise as well as the possible throughput of the ventilation system is reduced. 5 EP 1 302 220 Λ1 discloses a fire damper with a rectangular cross-section. In the four corner regions of the rectangular flap housing channel four moldings are arranged such that the flap housing channel in the region of the butterfly valve has a cross-sectional shape which is similar to a rectangle 10 with two semi-circles. The butterfly valve has a corresponding cross-sectional shape, so that the flap housing channel can be closed by means of the butterfly valve. By means of a corresponding fire damper, the above-described problem 15 of the sealing of the corner regions of the flap housing channel is achieved. Furthermore, the cross-sectional area of the shut-off flap is greater than the cross-sectional area of a circular shut-off flap fitting in the flow channel. However, both the flap housing channel and the butterfly valve each have two opposite rectilinear transverse extensions, so that the above-described problem of the necessary for the transfer of the butterfly valve from the open position to the closed position and vice versa high torque continues to exist. 25
    The object of the present invention is to provide an improved fire damper which reliably seals the damper housing channel in the closed position of the shut-off damper of the open position to the closed position and vice versa, only a low torque is necessary and the lowest possible flow resistance in the open position having. 6
    The object is achieved by a shut-off device for closing a flow channel for air and / or gaseous media having the features specified in claim 1. Advantageous embodiments of the invention are specified in the subclaims.
    More specifically, the shut-off device for closing a flow channel for air and / or gaseous media, or briefly the fire damper comprises a damper housing with a butterfly valve. The flap housing has a flap housing channel. The butterfly valve is pivotally mounted in the flap housing channel on a pivot axis. Along a periphery of the butterfly valve, a seal is arranged, and the butterfly valve is pivotable between an open position and a closed position. In this case, in the open position of the butterfly valve, the valve housing channel is flow-permeable, whereas in the closed position of the butterfly valve, this closes the valve housing channel, so that the valve housing channel is · flow-impermeable. According to the invention, both the flap housing channel and the butterfly valve each have elliptical cross sections.
    The shut-off device according to the invention for closing a flow channel for air and / or gaseous media, or briefly the fire damper according to the invention, while maintaining the advantages of the fire damper according to EP 1 302 220 Al a reduction of the necessary torque for the transfer of the butterfly valve from the open position in the closed position and vice versa, wherein at the same time the cross-sectional area of the flap housing channel is increased compared to a fire damper with a circular cross-section, so that 7 fire protection flap according to the invention in the open position has a lower flow resistance.
    Since both the flap housing channel and the shut-5 flap each have elliptical cross sections, the arranged on the periphery of the butterfly valve at a predetermined angular position of the butterfly valve (near / the region of the closed position) comes with the valve body channel only at two opposite 10 points in contact. In a further pivoting of the butterfly valve in the direction of the closed position then successively more arcuate sealing portions come into contact with the valve housing channel, so that the closing of the butterfly valve necessary torque slowly 15 and steadily increases, the torque required to overcome the static friction is constant and proportional to Contact surface steadily increases and reaches its highest value when approaching the closed position, whereas the torque for overcoming the deformation of the sealing lip 20 is variable and acts only partially when swinging the butterfly valve and is not additive.
    Further, the ratio of the circumference to the surface enclosed by the Um-25 is smaller in an ellipse than in a rectangle or square, so that the applied torque for closing the butterfly valve having an elliptical cross-sectional geometry becomes smaller due to the smaller circumference is than with a butterfly valve with a rectangular cross-sectional geometry. Therefore, with a corresponding elliptical design of the fire damper, a drive motor for adjusting the shut-off valve may be smaller than a fire damper with a rectangular butterfly valve.
    Furthermore, a butterfly valve with an elliptical 5 cross-sectional geometry on a large area, so that when installing the fire damper according to the invention in a rectangular or square flow channel only a small constriction through the fire damper is present, so that only small turbulence 10 of the flow air are effected, so that the noise caused by turbulence is reduced by the fire damper according to the invention.
    The flow channel may be a ventilation and / or extraction channel, a delivery channel or simply a wall opening. The flap housing of the fire damper according to the invention can be connected to the flow channel, wherein in the connected state of the flap housing channel then forms a flow channel portion of the flow channel 20. The seal may be a circumferential sealing lip and / or a circulating belt which foams when heated, so that a heat transfer and / or a smoke transport is reliably prevented. In addition, the outside of the valve body may be thermally insulated, wherein the thermal insulation may be accomplished by sheathing the valve body with a thermally insulating material. The valve housing can also be interrupted by a thermal insulation in the middle in the middle of the damper axis, wherein by means of 30 of the thermal insulation a heat transfer via the (metallic) valve housing is prevented from one room to another. • *
    Preferably, the cross-sectional shape of the butterfly valve in the Cartesian coordinate system corresponds to the elliptic equation X a
    n = 1 5 where a and b are the semiaxes of the ellipse, x is the x coordinate, y is the y coordinate, and n is a real number in the range of 10 > η ϊ 2.
    In the case of n = 2, the above-mentioned equation corresponds to the ellipse equation and the cross-sectional shape of the butterfly valve is elliptical. In the case of n > 2 corresponds to the cross-sectional shape of the butterfly valve, however, a so-called super ellipse. Super Ellipses interpolate ellipses and rectangles. The larger the exponent 15 n, the more the corresponding superellipse adapts to the rectangle with the lateral sides a and b, so that the cross-sectional area of the corresponding superellipse increases with increasing n and equalizes the cross-sectional area of the interpolated rectangle. Ellipses and all 20 super ellipses have the common feature that only at the four intersections of the ellipse curve with the coordinate axes, the curvature of the ellipses or super ellipse is zero. Thus, no ellipse and no super-ellipse on straight sections, so that the necessary torque 25 for the transfer of the butterfly valve from the open position to the closed position increases only gradually.
    Preferably, the exponent n is in the range between 3 i n 30 > 2. Furthermore, the exponent n may preferably be in the range 4 -in-3. Furthermore, an exponent n in the range 10 from 5 to n 2 3 is advantageous.
    Preferably, the cross-sectional area of the flap housing channel corresponds to the cross-sectional area of the flow channel.
    In a corresponding embodiment, the air flow rate is not reduced by the shut-off device according to the invention, so that the noise at the fire-10 protection flap due to turbulence is maximally reduced. Furthermore, the suction power or capacity is not affected by the installation of the fire damper according to the invention. However, it is also possible deviations of the cross-sectional areas of the flap housing channel and the flow channel. Thus, the cross-sectional areas may vary between 5% and 10%, between 10% and 15%, between 15% and 20%, between 20% and 30% and between 30% and 50% of each other. In this case, either the cross-sectional area of the flow channel can be greater than the cross-sectional area of the flap housing channel or vice versa.
    Preferably, the shut-off device comprises at least one transition piece connected to the flap housing, which has a transition channel. This transitional channel has, on a side facing the flap housing, a first cross section which corresponds to the cross section of the flap housing channel. Furthermore, the transition channel at 30 a side facing the flow channel on a second cross section, which corresponds to the cross section of the flow channel. The transition piece is connectable to the flow channel in such a way that the transition channel 11 forms a flow channel section.
    By means of appropriately shaped transition pieces turbulence of the air flow between the flow channel 5 and the shut-off device are reduced. Corresponding transition pieces can be arranged on the inlet side of the shut-off device and / or on the outlet side of the shut-off device. In this case, the transition pieces may have different cross-sectional shapes, which are adapted to the 10 cross-sectional shapes of the flow channel on the input side and the output side of the shut-off device.
    Preferably, the transition piece is positively and / or materially connected to the valve body. In an embodiment of the shut-off device, the mounting of the shut-off device in a suitably designed ventilation system is particularly simplified since the connection sides of the shut-off device are adapted to the flow channel. Furthermore, storage costs, procurement costs, assembly costs, packaging costs, transport costs and administrative costs for appropriately designed shut-off devices can be reduced since the shut-off devices do not have to be stored separately from the transition pieces. 25
    Preferably, the transition piece is variable in its axial extent and thus flexible. Appropriately designed transition pieces are also referred to as compensators.
    In a corresponding embodiment of the shut-off device, for example, changes in the longitudinal extent of the flow channel caused by heating can be compensated by these compensators, without leaks occurring between the flow channel and the shut-off device. Preferably, the shut-off device comprises a Bourdon spring filled with an expansion medium, which is connected to the hinged housing and is motion-coupled to the shut-off flap. A bourdon spring is a round bent tube spring with a cross-section which deviates from the circular shape, such as, for example, an oval, elliptical or polygonal cross-section which bends under the action of pressure. When a predetermined temperature of the expansion medium is exceeded, the volume of the expansion medium 15 increases such that the Bourdon spring develops a torque which converts the butterfly valve into the closed position. On the other hand, when falling below the predetermined temperature of the expansion medium, the volume of the expansion medium decreases in such a way that the Bourdon-20 develops a torque which converts the butterfly valve in the open position.
    A corresponding embodiment of the shut-off device has the advantage that the shut-off device itself constantly and without the need for a control device with a temperature sensor and a drive motor transferred the shut-off valve in the closed position, whereby an expansion of a fire or of smoke by the Belüf-30 system is prevented. At the same time, a correspondingly configured shut-off device offers the advantage that when the temperature falls below the predetermined temperature considered critical, the shut-off device closes the shut-off valve. Automatically returns to the open position without, for example, having to replace a safety slot (holding device which melts when a predetermined temperature is exceeded). 5
    Due to the special design of the cross-sectional shape of the butterfly valve and the valve body channel is for the transfer of the butterfly valve from the open position to the closed position and vice versa only a reduced torque required 10, which can be easily generated by a correspondingly dimensioned Bourdon spring.
    The Bourdon spring can be arranged in the valve housing channel or can be arranged outside of the valve housing 15.
    Further advantages, details and features of the invention will become apparent from the illustrated embodiments. In detail: 20
    A three-dimensional transparent representation of the shut-off device according to the invention, wherein the butterfly valve is in the open position; The shut-off device shown in Figure 1 in plan view with transparent valve body; The shut-off device shown in Figures 1 and 2A in frontal plan view;
    Figure 1: 25
    FIG. 2A: 30
    Figure 2B: • * * · «« «(4 * * * * * * ♦ · ·« «« ·· ♦ * * · ** ··· * · «« · «14 Figure 3 Fig. 4A: The shut-off device shown in Fig. 3 in plan view with transparent valve body; Fig. 4B: The shut-off device shown in Figs. 3 and 4A in frontal plan view; Figure 5: The shut-off device according to the invention in a three-dimensional perspective view Figure 6: A drawing to illustrate the approximation of the surface areas of a Superellip 20 se to the surface area of a rectangle Figure 7A: A three-dimensional perspective view of a transition piece connectable to the shut-off device Figure 7B Fig. 7C is a side view of the transition piece shown in Fig. 7A; 8A: A further embodiment of the shut-off device according to the invention with two transition pieces, two shut-off devices according to the invention having two. FIG. 8B: a detailed representation of the area surrounded by a circle in FIG. 8A; FIG. 9 shows a further embodiment of the shut-off device according to the invention in plan view; 10 shows a further embodiment of the shut-off device according to the invention in plan view; FIG. 11: shows a plan view of a modification of the embodiment of the shut-off device according to the invention shown in FIG. 10; Figure 12: A three-dimensional perspective view of a manual drive / Siche 20 tion device; FIG. 13 shows a cross-sectional view of the drive / securing device illustrated in FIG. 12; 25 Figure 14: A three-dimensional perspective view of a triggering device; Figure 15: shows a cross-sectional view of a part of the butterfly valve along the circumference of which a seal comprising two sealing segments is arranged; and
    16
    Figure 16: A cross-sectional view of a flange.
    In the following description, like reference numerals designate like components and like features, so that a description made with respect to a figure with respect to a component also applies to the other figures, so that a repetitive description is avoided.
    In FIGS. 1, 2A and 2B, the shut-off device 1 or fire-protection flap 1 according to the invention is shown in an open state, in which the shut-off device 1 is permeable to flow.
    The shut-off device 1 for closing a flow channel for air and / or gaseous media comprises a tubular flap housing 2 with a straight flap housing channel 4. The flap housing 2 is delimited by two connecting flanges 6 aligned parallel to one another. However, the flap housing 2 and thus also the flap housing channel 4 may also have a bend, so that then the limiting connecting flanges are aligned at any angle between 0 ° and 90 ° to each other.
    In the flap housing channel 4, a butterfly valve 10 is rotatably mounted centrally at two attachment points 14, so that the butterfly valve 10 is pivotable in the flap housing channel 4 about a defined by the attachment points 14 pivot axis 14 between an open position and a closed position. In FIGS. 1, 2A and 2B, the shut-off flap 10 is in the open position 17, in which the flap-housing channel 4 is permeable to flow. In the open position shown here, the normal of the butterfly valve 10, which is perpendicular to the surface of the butterfly valve 10, perpendicular to the central axis of the valve body 2. However, in the open position of the butterfly valve 10 whose normal and a deviating from 90 ° angle with the central axis of the valve body 2, as long as it is only ensured that the flap housing channel 4 is flow-permeable.
    From Figure 1 it can be seen that along the circumference of the butterfly valve 10, a seal 12 is arranged circumferentially. The seal 12 of the butterfly valve 10 serves to seal a gap between the butterfly valve 10 and an inner wall of the flap housing 2 in the closed position shown in Figures 3, 4A and 4B of the butterfly valve 10, in which the flap housing channel 4 is fluid-impermeable.
    The butterfly valve 10 is pivotable between the open position and the closed position by means of a drive device 40. In this case, the drive device 40 can be configured as an electric motor 40, as a hydraulic motor 40 or as a manually operable drive device 40. The drive device 40 is coupled by means of a three-part transmission linkage 42 with the butterfly valve 10.
    Furthermore, the shut-off device 1 comprises a projecting into the valve housing channel 4 temperature sensor 16, which may be connected to the drive means 40 via a signal line not shown dar. The drive means 40 may comprise a controller 18 which controls the operation of the drive means 40. Alternatively, a separate and not shown control means may be used which is connected to the drive means 40 and to the temperature sensor 16 via signal lines, not shown.
    When a predetermined temperature, for example 70 ° C., is exceeded, the control device controls the drive device 40 in such a manner that it pivots the shut-off flap 10 via the transmission linkage 42 from the open position into the closed position, so that the valve housing channel 4 is no longer permeable to flow in the closed position.
    From Figures 1, 2A and 2B it can be seen that in each case a transition piece 20 is attached to the two connecting flanges 6 of the valve body 2, which are each arranged between the valve housing 2 and the flow channel, not shown. However, the flap housing 2 can also be connected directly to a flow channel by means of the two connecting flanges 6. The transition pieces 20 each have a transitional channel 22 which is delimited by a first connection flange 24 and by a second connection flange 26.
    The first connection flange 24, which faces the flap housing 2 and is connected to the connection flange 6, has a first cross section which corresponds to the cross section of the flap housing channel 4. Since the cross section of the flap housing channel 4 is elliptical or superelliptic, also the first cross section of the transition channel 2 is also elliptical or superelliptic. The second connection flange 26, facing the flow channel and
    ♦ · 19 can be connected to this, has a second rectangular cross-section, which corresponds to the cross-section of the flow channel.
    It can be seen from FIG. 2B that the cross-sectional area of the flap housing channel 4 is approximately the same as the cross-sectional area of the transition channel 22 in the region of the second connecting flange 26 and thus approximately the same size as the cross-sectional area of the flow channel (not shown).
    FIG. 6 shows a schematic representation of the cross-sectional areas of the flap housing channel 4 and of the flow channel and thus of the transition channel 22 in the region of the second connection flange 26. In this case, Fl denotes the cross-sectional area of the flap housing channel 4, and thus the surface of a superellipse, since the cross-sectional area of the flap housing channel 4 is a superellipse in the illustrated embodiment. F2 denotes the area of the flow channel. The rectangular cross-sectional area F2 of the flow channel has a rectangular width Ra and a rectangular height Rb. In contrast, the width extent al of the superellipse is greater than the rectangular width Ra and the height extent bl of the superellipse is also greater than the rectangle height · Rb.
    The height and width extents of the rectangle and the superellipse are chosen such that the areas Fl and F2 are identical. Although the surface Fl does not completely cover the corner regions of the surface F1, the width extension a1 and the height extent b1 of the superellipse are greater than the rectangular width Ra and the rectangular regions 20
    I
    The cross-sectional area of the flap housing channel 4 thus corresponds to the cross-sectional area of the flow channel. However, there are also deviations of the cross-sectional areas of the flap housing duct 4 and the flow channel mög-5 lent. Thus, the cross-sectional areas may vary between 5% and 10%, between 10% and 15%, between 15% and 20% and between 20% and 30% and between 30% and 50%. In this case, either the cross-sectional area of the flow channel may be greater than the cross-sectional area of the flap housing channel 4 or vice versa.
    In Figures 3, 4A and 4B, the shut-off device 1 shown in Figures 1, 2A and 2B is shown in the closed position in which the valve housing channel 4 15 is impermeable to flow. In the closed position shown in the figures, the normal of the butterfly valve 10 and the central axis of the valve body 2 are parallel to each other, so that the butterfly valve 10 is perpendicular to the valve housing channel 4. However, in the closed position of the butterfly valve 10, these need not necessarily be perpendicular to the valve housing channel 4 when the butterfly valve is dimensioned accordingly. Then, to transfer the shut-off valve 10 from the open position to the closed position, it does not have to be pivoted by 90 ° but by a smaller angle.
    By activating the drive device 40, for example, by a control device, not shown, which is connected to the drive device 40 and the temperature-30 1er via a signal line, a torque generated by the drive means 40 by means of the three-piece transmission linkage 42 on the pivot axis 14 of the butterfly valve 10th transferred, so that the shut-21 flap 10 is pivoted from the open position to the closed position.
    In the following, it is assumed that the opening 5 of the shut-off valve 10 corresponds to a 0 ° position, and that the closed position of the butterfly valve 10 corresponds to a 90 ° position. When transferring the butterfly valve 10 from the open position into the closed position, the sealing around the shut-off valve 10 is arranged seal 12 10 with the inner wall of the valve body 2 and thus with the valve body 4, for example, at an 85 ° position of the butterfly valve 10 in contact. Depending on the dimensions of the seal 12, the valve housing channel 4 and the butterfly valve 10, the contact can also be made at ande-15 ren angular positions of the butterfly valve. Due to the elliptical or superelliptic cross-sectional shape of the butterfly valve 10, whose cross section in the Cartesian coordinate system by the ellipse equation
    H
    X - + a 20, where a and b are the semiaxes of the ellipse, x is the x coordinate, y is the y coordinate, and n is a real number, the seal 12 arrives at only two at the 85 ° position opposite points with the inner wall of the valve body 2 in contact. 25
    In a further pivoting of the butterfly valve 10 in the direction of the closed position and thus in the direction of the 900 position, then further successive further arcuate sealing portions of the seal 12 with the inner wall 30 of the damper housing 2 come into contact. Thus, at the angular position where the seal 12 first contacts the valve housing channel 4 (85 "in the example above), the seal 12 does not contact the valve housing channel 4 over its entire lengthwise extent with the valve body passageway Seal 12 5 must not be deformed over its entire length extension. Furthermore, the static frictional force between the damper housing channel 4 and the seal 12 continuously increases upon pivoting of the butterfly valve 10 in the 90 "position. The applied by the drive means 40 10 torque thus increases continuously when transferring the butterfly valve in the closed position. When transferring a rectangular butterfly valve in a rectangular valve housing channel, however, the first contact of the seal with the valve housing channel immediately the maximum torque must be generated.
    Moreover, the ratio of the circumference to the circumference-enclosed area in an ellipse is more favorable (smaller) than that of a rectangle or a square such that the torque to be applied causes the butterfly valve 10 to close with an elliptical or super-elliptical cross-sectional geometry the smaller circumference is smaller than in a butterfly valve 10 with an example rectangular cross-sectional geometry 25. Therefore, in an elliptical embodiment according to the invention, the fire damper 1 or the butterfly valve 10 and the flap housing channel 4, the drive means 40 for pivoting the butterfly valve 10 smaller than a fire damper with a rectangular butterfly valve 30.
    As already described above with reference to FIGS. 2B, 4B and. 6, the butterfly valve 10 has a large surface area with an elliptical or superelliptic cross-sectional geometry. Thus, when installing the fire damper 1 according to the invention in an example rectangular or square flow channel 5 no or only a small constriction through the fire damper 1 before, so that only small turbulence of the flow air are effected. This reduces the noise caused by turbulence by the fire damper according to the invention 1. 10th
    In the embodiment of the shut-off device 1 shown in Figures 1 to 5, the shut-off device 1 is connected to two transition pieces 20 via a connection flange 6, each having a first connection flange 15 24 of the transition pieces 20.
    It can be seen from FIGS. 8A and 8B that a connection between the flap housing 2 and the transition pieces 20 is also possible via a so-called flanging 20. In this case, the surface ends of the transition piece 20 engage spirally in the surface ends of the valve housing channel 2, as shown in Figure 8B. By further crimping the structure shown in FIG. 8B, the connection between the transition piece 20 and the flap casing channel 2 can be further strengthened.
    It can be seen from FIG. 8A that the flap housing 2 has an inspection opening 8 for the maintenance of the shut-off device 1. This inspection opening 8 can also be provided in the shut-off device 1 shown in FIGS. 1 to 5.
    FIGS. 7A, 7B and 7C show a transition piece 20 in 24 • »three-dimensional perspective view, in plan view and in side view. In this illustrated transition piece 20, the cross-sectional area of the flow channel-side end is smaller than the cross-sectional area of the valve body-side end, so that consequently the cross-sectional area of the shut-off device 1 and the cross-sectional area of the butterfly valve 10 is greater than the cross-sectional area of the flow channel. The respective end faces 24, 26 may either each have a connection flange or may alternatively have a flanged edge. The transition piece 20 shown in Figures 7A to 7C may be cut out of a sheet material (e.g., a sheet, a flexible and refractory sheet, etc.), and joined together by joining two free ends of the cut sheet As shown in Figure 9, alternatively, the valve body 2 may be formed integrally with the transition pieces 20. The shut-off device 1 shown in Figure 9 has on its outer side fasteners 19 in the form of threaded rods 19, by means of which 25 the shut-off device 1 can be fixed, for example in a masonry or to a mounting structure. Of course, these fastening devices 19 can also be used in the shut-off devices 1 according to FIGS. 1 to 8.
    It can also be seen from FIG. 9 that the left-hand side of the flap housing 2 is provided with a peripheral thermal insulation 18, so that a heat transfer from the blocking device 1 to a substructure or to a wall construction is reduced. In the illustration of FIG. 9, the right side of the shut-off device 1 represents the motor side, that is to say the side of the shut-off device 1 on which a withdrawal motor or a ventilator is arranged. The left side of the shut-off device 1 shown in FIG. 9 represents the side which is connected to a ventilation system. By closing the butterfly valve 10 can warm or hot air and smoke only reach up to the butterfly valve 10, so that the thermal insulation 18 is disposed only in this area around the valve body 2. 15
    FIG. 10 shows a further embodiment of the shut-off device 1 according to the invention. The shut-off device 1 comprises a Bourdon spring 30 filled with an expansion medium, which is connected to the valve housing 2 and is coupled in a coupled manner to the shut-off valve 10. The Bourdon spring 30 is a round bent tube spring 30 with an oval cross section, which bends under internal pressure. The Bourdon spring 30 may be disposed either in the valve housing channel 4 or outside the valve body 25 channel 4 and thus on the outside of the valve body 2.
    When exceeding a predetermined temperature of the expansion medium, for. B. when exceeding 72 ° C, 30 increases the volume of the expansion medium such that the Bourdon spring 30, a valve 10 in the closed position converting torque developed. In Figure 10, the shut-off device 1 is shown, in which the
    26
    Butterfly valve 10 is in the closed position. In the closed position of the butterfly valve 10, the butterfly valve 10 abuts against a stop 9, so that over-rotation of the butterfly valve 10 beyond the closed position is avoided.
    On the other hand, when the temperature of the expansion medium lowers again below the predetermined temperature, the expansion medium 10 contracts, so that 10 reduces the volume of the expansion medium. Due to the reduction in the volume of the expansion medium, the pressure within the Bourdon spring 30 decreases so that it generates a torque which converts the butterfly valve into the open position. 15
    In the embodiment of the shut-off device 1 shown in FIG. 10, the Bourdon spring 30 is arranged on the pivot axis 14. In the embodiment according to FIG. 11, the Bourdon spring 30 is not arranged on the pivoting axis 14. Rather, a free leg of the bourdon spring 30 is connected via a two-part transmission linkage 32 with the butterfly valve 10. Thus, the Bourdon spring 30 is coupled by means of the gear train 32 with the butterfly valve 10. The remaining mode of operation 25 of the shut-off device 1 illustrated in FIG. 11 is identical to the functioning of the shut-off device 1 illustrated in FIG.
    The use of a Bourdon spring 30 as Antriebseinrich 30 tion for the butterfly valve 10 has the advantage that when exceeding a critical temperature considered the shut-off device 1 independently and without the need for a control device with a Tempe- ···· ··· ·· ··· ··· · 27 temperature sensor and a drive motor, the butterfly valve 10 can be transferred into the closed position, whereby the expansion of a fire or smoke is prevented by the ventilation system. At the same time, the use of a Bourdon spring 30 in a shut-off device 1 offers the advantage that when the temperature falls below the predetermined temperature which is regarded as critical, the shut-off device automatically moves the shut-off flap 10 back into the open position. A known from the prior art 10 fusible link, which holds the butterfly valve 10 in the open position and melts when exceeding the predetermined temperature, must not be replaced for reuse. 15 It should be noted that a transfer of the butterfly valve 10 in the closed position by the Bourdon spring 30 only useful and possible if the temperature development was not so large that the butterfly valve has been destroyed 10 due to high temperatures. The Bourdon spring 30 therefore ensures a safe transfer of the butterfly valve 10 in the closed position when exceeding the predetermined temperature (for example 72 ° C), whereas the Bourdon spring 30 can only convert the butterfly valve 10 in the open position, if the butterfly valve 10 due to very high temperatures has not been destroyed. If, however, only a cold room development was present, the butterfly valve 10 is reliably transferred by means of the Bourdon spring 30 falls below the predetermined temperature again in the Offenstel-30 ment.
    FIGS. 12 and 13 show a manual drive / safety device 50 which can be used instead of the drive device 40 or instead of the Bourdon spring 30 or alternatively in addition to the Bourdon spring 30 and to the drive device 40. The manual drive / securing device 50 comprises a drive shaft 51 which can be coupled in motion with the pivot axis 14 of the butterfly valve 10. The drive shaft 51 is rotatably connected to a biasing means 54 in the form of a torsion spring 54 by means of a disc 52, wherein the disc 42 with the drive shaft 51 and the torsion spring 10 54 is fixedly connected. The torsion spring 54 is also with a
    Housing 58 of the manual drive / securing device 50 is connected.
    The torsion spring 54 biases the drive shaft 51 and thus the shut-off valve 10 in such a way that the shut-off flap 10, which is coupled to the drive shaft 51 in a motion-controlled manner, is biased in the direction of the closed position. The manual drive / safety device 50 also comprises two holding devices 53 in the form of safety levers 53, which engage in recesses of the disc 52 and prevent the drive shaft 51 from rotating. The holding devices 53 are slidably mounted on guide pins 55 and biased by compression springs 56. 25 By pressing the locking lever 53 shown in Figure 13 above against the applied by the compression spring 56 biasing force, the holding device 53 no longer engages in a correspondingly provided recess of the disc 52, so that the torsion spring 54, the drive shaft 30 51 and the drive shaft 51st movement-coupled
    Shut-off valve 10 can overflow in the closed position.
    The retaining device 53 29 shown in Figure 13 below attacks when transferring the butterfly valve 10 in the closed position in a correspondingly provided further recess of the disc 52, so that the butterfly valve 10 from the closed position can not be pivoted into the open position 5. Only by pressing the holding device 53 shown in Figure 13 below against the biasing force applied by the compression spring 56, the butterfly valve 10 can be transferred by means of a rotatably connected to the drive shaft 51 operating lever 57 of the 10 closed position back to the open position, whereby the torsion spring 54 is biased again becomes.
    From FIG. 12 it can be seen that a bore 59 for a release pin 61 15 is provided in the housing 58 at the front.
    FIG. 14 shows a triggering device 60. The triggering device 60 comprises a trigger pin 61, which is displaceably mounted in a pin guide 62. The trigger-20 pin 61 is in contact with a bolt 64 which is connected by means of a trained as a fusible link 65 holding device 65 and securing means 65 by means of another bolt with the pin guide 62. Between the two bolts, a compression spring 63 is arranged, which is biased in the state shown in Figure 25 shown, that is compressed. When a predetermined temperature is exceeded, the melting solder 65 melts, so that the bolt 64 is displaced by the compression spring 63. Due to the connection of the trigger pin 61 with the bolt 64, the trigger pin 61 is pushed out of the pin guide 62.
    As already mentioned above, the trigger pin 61 of the triggering device 60 can protrude through the bore 59 of the housing 58 and 30 are in contact with the safety lever 13 shown in Figure 13 above. When a predetermined temperature is exceeded, the trigger pin 61 by means of the compression spring 63 into the housing 58 hineingescho-5 ben, so that the trigger pin 61, the locking lever 53 as described above presses against the applied by the compression spring 56 biasing force to the rear. Thus, the torsion spring 54 is released, so that the torsion spring 54, the drive shaft 51 and the bewe-10 with the drive shaft 51 supply-coupled shut-off valve 10 can be converted into the closed position.
    By means of the manual drive / safety device 50 shown in Figures 12 to 14, the shut-15 flap 10 can be manually transferred from the open position to the closed position. Furthermore, by means of the manual drive / safety device 50, the shut-off flap 10 can be transferred from the open position to the closed position by simply actuating a holding device 53, and furthermore the shut-off flap 10 can automatically be actuated by means of the triggering device 60 and the manual drive / securing device 50 of FIG Open position to be transferred to the closed position. The described manual drive / safety device 50 is fastened together with the triggering device 60 on the outside of the shut-off device 1, so that after a release of the triggering device 60, the fusible link 65 or directly the entire triggering device 30 60 can be replaced without problems without the
    Shut-off device 1 must be opened. 31
    Figure 15 shows a cross-sectional view of a portion of the butterfly valve 10 in the closed position (left in Figure 15) and in a position between the closed position and the open position (right in Figure 15). The seal 12 arranged along the circumference of the butterfly valve 10 comprises two sealing segments 12a, 12b which have semicircular cross-sections. In the valve housing channel 4, not shown in Figure 15, two beads are provided on the inner wall, where the sealing segments 10 12a, 12b lie in the closed position of the butterfly valve 10 form-fitting manner. The seal 12, which may also be referred to as a sealing lip 12, consists of an elastic material, for example an elastomer such as PVC, PU or synthetic rubber (EDPM), with a hardness of, for example, Shore A 65, at lower temperature loads and off Silicone rubber at higher temperature loads. The upper, the flap housing channel facing hollow chamber is stiffened with internal truss braces such that when pivoting the butterfly valve 10 in 20 closed position, the laterally resulting, acting perpendicular to the geometric center of the butterfly valve 10 force prevents the sealing lip 12 at the lateral offset. The lower chamber is suitable for receiving an intumescent semi-rigid band. The sealing lip 25 is connected during the strapping of the flap 10 by radially aligned bores and screw connections 13 with the flap 10.
    The first connection flange 24 of the transition piece 20 um-30 holds a flange 27 and the second flange 26 of the transition piece 20 comprises four flange profiles 27. Figure 16 shows a corresponding flange 27 in cross-section. The four flange profiles 27 of the second connection flange 26 are connected to each other by means of four corner angles, not shown.
    The flange 27 has a central mounting leg 27 a, which is aligned transversely to the longitudinal or mounting direction of the transition piece 20 in the mounted state. Channel inside, so facing the transitional channel 22, the mounting leg 27a goes into a U-shaped groove 27b, which does not necessarily have to be designed rectangular, but for example, may also have a more circular shaped like a bead undercut, as this basically from the DE 41 40 870 Al is known. The inner material end 27c of the flange material is bent over in the cross-section according to FIG. 16 barb-like in the direction of the groove 27b and thus forms a barb-like retaining strip 27d.
    The outer boundary edge 27e of the flange profile 27 lying opposite the material end 27c is folded twice convexly and once concavely to form a stiffening angle 27f extending transversely to the mounting leg 27a and protruding beyond the mounting leg 27a, and then merges into a parallel leg 27g which in FIG adjacent small distance and parallel or at least approachally parallel to the mounting leg 27a. The boundary edge 27e then ends shortly before the cross-sectionally U-shaped groove 27b.
    An anchoring lip, not shown, a Mantelma terials, which forms the wall of the transition piece 20 can be inserted into the groove 27 b and engage behind the retaining strip 27 d. After insertion of this sealing lip, for example, a bellows, in the corresponding circumferential groove 27b of the first connecting flange 24 or the second connecting flange 26, the bellows captive fixed to the flange 27. 5
    The flange profile 27 does not necessarily have the parallel leg 27g, because the functionality described above is achieved without the parallel leg 27 g. 10 34
    List of references: 1 2 4 6 8 9 10 12 12a, 12b 13 14 16 18 19 20 22 24 26 27 27a 27b 27c 27d 27e 27 f 27g 28 30 32
    Shut-off device, fire damper
    flap housing
    Flap housing channel
    Connection flange (of the flap housing)
    inspection opening
    attack
    butterfly valve
    poetry
    Sealing segment screwing
    Mounting point, swivel axis temperature sensor thermal insulation (of the damper housing) fixing device, threaded rod transition piece transition duct first connection flange (of the transition piece) second connection flange (of the transition piece)
    Flange
    Mounting leg
    groove
    Material end (of flange profile)
    Retaining strip (of the flange profile)
    boundary edge
    Versteifungsabwinkelung
    Parallel flaring bead (of transition piece)
    Bourdon
    Transmission linkage (between Bourdon spring and butterfly valve)
    Drive device, motor 40 ···· · · * * · • I I f · · * * *
    ·····. 35 42 Transmission linkage 50 Manual drive / safety device 51 Drive shaft (the manual drive device) 52 Washer (the manual drive device) 53 Holding device / safety lever (the manual drive device) 54 Pretensioner, torsion spring 55 Guide pin 56 Compression spring 57 Operating lever 58 Housing 59 Drift pin hole 60 Release device 61 Release pin 62 Pin guide 63 Compression spring 64 Pin 65 Holding device, fusible link
    Fl Area of the superellipse F2 Area of the rectangle
    Ra rectangle width
    Rb Rectangle height al Width extension of superellipse bl Height extension of superellipse
    权利要求:
    Claims (16)
    [1]
    1. A shut-off device (1) for closing a flow channel for air and / or gaseous media, wherein the shut-off device (1) has the following features: the shut-off device (1) comprises a flap housing (2) with a flap housing channel (4); the shut-off device (1) comprises a shut-off flap (10) which is pivotally mounted in the flap housing channel ¢ 4) on a pivot axis {14); along the periphery of the butterfly valve (10) a seal (12) is arranged; the shut-off flap {10) is pivotable between an open position and a closed position; in the open position of the butterfly valve (10), the flap housing channel (4) is flow-permeable; and in the closed position of the butterfly valve (10) closes this the flap housing channel (4), so that the flap housing channel (4) is flow-impermeable, characterized in that the flap housing channel (4) and the butterfly valve (10) each have elliptical cross-sections.
    [2]
    2. shut-off device (1) according to claim 1, characterized in that the cross-sectional shape of the butterfly valve (10) in the Cartesian coordinate system of the elliptic equation X aybn - 1 • · · 4 «» * • ♦ 4 • ♦ 4 · * · «« «« Where a and b are the semiaxes of the ellipse, x is the x coordinate, y is the y coordinate, and n is a real number in the range 10 > n > 2 are.
    [3]
    3. Shut-off device according to one of the preceding claims, characterized in that the elliptical shape of the cross section of the butterfly valve (10) is approximated by a polygon.
    [4]
    4. Shut-off device (1) according to one of the preceding claims, characterized in that the cross-sectional area of the flap housing channel (4) corresponds to the cross-sectional area of the flow channel.
    [5]
    5. shut-off device (1) according to any one of the preceding claims, characterized by the following features: the shut-off device (1) further comprises at least one with the flap housing (2) connected transition piece (20) having a transition channel (22); the transition duct (22) has on a side facing the flap housing (2) a first cross section which corresponds to the cross section of the flap housing channel (4); the transition channel (22) has, on a side facing the flow channel, a second cross section which corresponds to the cross section of the flow channel; and the transition piece (20) is connectable to the flow channel such that the transition channel (22) forms a flow channel portion.
    [6]
    6. Shut-off device (1) according to one of claims 1 to 4, characterized by the following features:

    The shut-off device (1) further comprises at least one transition piece (20) connected to the flap housing (2) with a transition channel (22); the transition duct (22) has on a side facing the flap housing (2) a first cross section which corresponds to the cross section of the flap housing channel (4); the transition channel (22) has, on a side facing the flow channel, a second cross section which corresponds to the cross section of the flow channel; and the transition piece (20) is positively and / or cohesively connected to the flap housing (2).
    [7]
    7. Shut-off device (1) according to one of claims 5 or 6, characterized in that the transition piece (20) is invariable in its axial extent and thus rigid.
    [8]
    8. shut-off device (1) according to any one of claims 5 or 6, characterized in that the transition piece (20) is variable in its axial extent and thus flexible.
    [9]
    9. shut-off device (1) according to one of claims 5 to 8, characterized in that the transition piece (20) is formed of a sheet material, wherein the sheet-like material has a shape such that by connecting two end edges of the sheet material, the transition piece (20) is formed.
    [10]
    10. Shut-off device (1) according to one of claims 5 to 9, characterized by the following features: 39 * · t ♦ the transition piece (20) comprises a first connection flange (24) and a second connection flange (2 6); the first connection flange (24) and the second connection flange (26) each comprise a flange profile (27); and the flange profile (27) comprises a mounting leg · (27a) and a mounting groove (27b) into which a retaining strip (27d) protrudes. 10 L5 20 25
    [11]
    11. Shut-off device (1) according to one of the preceding claims, characterized by the following features: the shut-off device comprises a filled with an expansion medium Bourdon spring (30); the bourdon spring (30) is connected to the valve body (2) and is coupled in motion with the butterfly valve (10); when a predetermined temperature of the expansion medium is exceeded, the volume of the expansion medium increases such that the Bourdon spring (30) develops a torque which converts the shut-off flap (10) into the closed position; and falls below the predetermined temperature of the expansion medium, the volume of the expansion medium decreases such that the Bourdon spring (30) develops a the butterfly valve (10) in the open position converting torque.
    [12]
    12. shut-off device (1) according to one of the preceding 30 claims, characterized in that the shut-off device (1) comprises a movement-coupled with the shut-off valve (10) drive means (40) by means of 40 • «J t •» the shut-off valve (10) motor is pivotable between the open position and the closed position.
    [13]
    13. Shut-off device (1) according to one of the preceding 5 claims, characterized in that the shut-off device (1) comprises a movement-coupled with the shut-off valve (10) operating lever (57) by means of which the butterfly valve (10) manually between the open position and the closed position is pivotable. 10
    [14]
    14. shut-off device (1) according to any one of the preceding claims, characterized by the following features: the shut-off device (1) comprises a biasing means (54) biasing the shut-off valve (10) to the 15 closed position; the shut-off device (1) comprises a holding device (53) which holds the shut-off flap (10) in the open position; and when a predetermined temperature in -20 within the shut-off device (1) is exceeded, the Halteein direction (53) the butterfly valve (10) free, so that the butterfly valve (10) by means of the biasing means (54) is pivoted into the closed position.
    [15]
    15. Shut-off device (1) according to one of the preceding claims, characterized by the following features: on an inner wall of the flap housing (2) two circumferential beads are provided; the seal (12) comprises two sealing segments (12a, 30 12b); and in the closed position of the butterfly valve (10), the sealing segments (12a, 12b) are positively against the beads of the flap housing (2). • «41
    [16]
    16. Shut-off device (1) according to one of the preceding claims, characterized in that on an inner wall of the flap housing {2} a circulating belt is arranged, which in the closed position of the butterfly valve (10) with the seal (12) is in contact and when exceeded foams a predetermined temperature. 5
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    同族专利:
    公开号 | 公开日
    EP2642167B1|2015-05-06|
    EP2642167A2|2013-09-25|
    PL2642167T3|2015-10-30|
    EP2642167A3|2013-10-09|
    AT512394B1|2013-08-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE9003159U1|1990-03-17|1990-06-28|"Schako" Metallwarenfabrik Ferdinand Schad Kg Zweigniederlassung Kolbingen, 7201 Kolbingen, De|
    EP0512414A2|1991-05-02|1992-11-11|Schako Metallwarenfabrik Ferdinand Schad Kg|Fire protection damper|
    DE4409088A1|1994-03-17|1995-09-21|Werner Wildeboer|Fire barrier in ventilation pipes|
    DE202008014234U1|2008-10-25|2008-12-24|Krensel Gmbh Brandschutztechnische Bausysteme|Fire / Entrauchungseinrichtung|
    JP2004204784A|2002-12-25|2004-07-22|Aisan Ind Co Ltd|Throttle valve device|
    FR2940390B1|2008-12-18|2016-07-29|Valeo Systemes De Controle Moteur|CLUTCH COMPONENT OF FLUID FLOW CHANNEL AND METHOD FOR FORMING SUCH A FLAP|DE102014108379A1|2014-06-13|2016-01-07|Horst Severyns|Shut-off|
    EP3067094A1|2015-03-09|2016-09-14|Siegfried Geldner|Closure device for sealing a flow channel for gaseous media, in particular fire protection flap and associated method for production|
    DE102015002976A1|2015-03-10|2016-09-15|Siegfried Geldner|Shut-off device for closing a flow channel for gaseous media, in particular fire damper and associated method for the production|
    EP3388794B2|2017-04-13|2022-03-09|SICK Engineering GmbH|Measuring device for measuring a flow speed of a fluid|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA317/2012A|AT512394B1|2012-03-15|2012-03-15|Shut-off device for closing a flow channel|ATA317/2012A| AT512394B1|2012-03-15|2012-03-15|Shut-off device for closing a flow channel|
    EP20130001138| EP2642167B1|2012-03-15|2013-03-07|Shut-off device for closing a flow channel|
    PL13001138T| PL2642167T3|2012-03-15|2013-03-07|Shut-off device for closing a flow channel|
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