• 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:
    A self-regulating ventilation system comprises a substantially horizontal ventilation channel (13) as well as a self-regulating valve (6) accommodated in the ventilation channel, which valve comprises at least one valve part (7, 8) which is rotatable about an axis of rotation (11). The valve part is under the influence of a flow; can be transferred between a relatively open position and a relatively closed position by the ventilation channel (13). The axis of rotation (11) is oblique with respect to the vertical while the axis of rotation (11) is eccentric with respect to the center of gravity (10, 10 ') of the valve part (7,8), such that under the influence of gravity the valve part is forced to its open position.
    公开号:BE1023442B1
    申请号:E2016/5158
    申请日:2016-03-03
    公开日:2017-03-21
    发明作者:Luc Louis Renson
    申请人:Vero Duco N.V.；
    IPC主号:
    专利说明:

    eleven-line ventilation system and valve unit therefor
    The invention relates to a self-regulating ventilation system, comprising a ventilation channel, not a circumferential wall which defines an upper side and a lower side, which ventilation channel is designed for a flow with one predetermined direction of flow, and a self-regulating valve included in the ventilation channel and comprising at least one valve part rotatable around a center of rotation and which valve part can be transferred from under the influence of the flow through the ventilation duct. a relatively open position in a relatively closed position, and in the absence of the flow is in the relatively open position. This self-regulating ventilation system is known from GB-A-1408623. The valve thereof consists of a stationary valve part and a movable valve part which is rotatably suspended on a horizontal axis by means of a partitioned arm. Under the influence of the pressure differences which occur on either side of the valve part of the sehot-shaped arm during a flow through the ventilation channel, the valve part can provide a more or less large passage opening for maintaining a constant flow.
    This known ventilation system only makes a limited flow possible, since an important part of the cross-section of the ventilation channel is permanently blocked by the fixed valve part. Moreover, the construction is relatively complicated, and dependent on the leakage losses between the fixed and movable valve part. It is an object of the invention to provide a simplified self-regulating ventilation system, and a further object is to provide a self-regulating ventilation system that has an improved maximum flow. Yet another object is to provide a self-regulating ventilation system that has greater reliability. These and other objectives are achieved in that the axis of rotation intersects the top and bottom of the ventilation duct, that the axis of rotation is inclined in a plane parallel to the direction of flow with respect to the vertical and that the axis of rotation is eccentric with respect to the center of gravity of the ventilation channel. valve part such that under the influence of gravity the valve part is preloaded in the direction towards its relatively open position. The valve member is preferably pre-loaded by gravity such that it is rotated into the relatively open position. The latter then takes place in the absence of current.
    By choosing such a suitable position of the axis of rotation, the opened position of the self-regulating valve can be obtained in a reliable and simple manner. Under the influence of the flow in the ventilation duct, the valve can be moved to the more closed position against the influence of gravity. With decreasing intensity of the flow through the channel, the valve can conversely assume the more open position under the influence of gravity. Preferably, the axis of rotation is in a substantially vertical plane that extends in flow direction. This surface can also be directed slightly obliquely at a small angle with respect to the vertical.
    In this case, it holds that the gravitational force exerted on the valve member has a parallel disconnected parallel to the axis of rotation and a perpendicular disconnected perpendicular to the axis of rotation. and wherein perpendicular to the axis of rotation and perpendicular to the perpendicular disconnected the moment arm of the perpendicular disconnected with respect to the axis of rotation is determined such that the perpendicular disconnected exerts a moment equal to the product of Gm and a on the valve part directed in the sense from turning the valve member to. and preferably up to. the relatively open position.
    The desired behavior of the valve can be further promoted and influenced by providing a biasing means for biasing each valve member to the open position. That biasing means can, for example, be a biasing spring. like a torsion spring. to be. Depending on the spring characteristic, for example, with a pressure difference of 1 Pa across the valve, it can begin to close, against the influence of the gravity of the biasing spring. When a more powerful biasing spring is used, that start of closing can occur at, for example, a pressure difference of 5 Pa.
    According to a preferred embodiment, the valve can comprise two valve parts that are each rotatably suspended around an axis of rotation, such that under the influence of gravity the valve parts are urged to their open position. In particular, a variant is preferred in which the valve parts are rotatable about a common axis of rotation. Preferably, such valve parts are symmetrical with respect to the axis of rotation: an example is a valve from two semi-circular valve parts at a ventilation channel with a corresponding circular cross section. In the closed state of each valve part. the outer peripheral contour thereof and the inner peripheral contour of the ventilation duct can be identical or tucked. In the latter case, a key-shaped opening can remain open in the closed position of the valve, which allows a leakage current. The valve parts can also be used to provide a leakage current. or alternatively, have openings. For determining the maximum closed position, stop means can be provided such that each valve part moves towards and under the influence of the flow and against the influence of gravity. and possibly against, which means of attack is forced. These stop means are located on the downstream side of each valve part. the stop means can be designed as local stops that extend over only a part of the circumference of the ventilation duct. Alternatively, a stop in the form of a completely revolving valve seat can also be envisaged.
    It can further be stated that the position of each axis of rotation on the underside of the ventilation channel is shifted in the direction of the flow relative to the position of that axis of rotation on the upper side of the ventilation channel.
    In a possible embodiment the axis of rotation is determined by a shaft or aligned shaft stubs which are mounted on the top and bottom of the ventilation duct ts /, and wherein each valve part is rotatably suspended on the shaft or shaft stubs. Furthermore, each valve part can be included in a ring, which ring is mounted between two ventilation channel parts or is included in a ventilation channel.
    The invention further relates to a valve unit for a ventilation system as described above, comprising a ring with a circumferential wall which defines an upper side and a lower side and a self-regulating valve received in the ring and comprising at least one valve part that is rotatable about a center of rotation. wherein the axis of rotation intersects the top and bottom of the ring, that the axis of rotation in a plane parallel to the axis of the ring is inclined with respect to the vertical, and that the axis of rotation is eccentric with respect to the center of gravity of the valve member that under the influence of gravity the valve part is preloaded in the direction towards its relatively open position.
    The pivot suspension is attached to the ring on either side of the passage at ring wall positions and is oriented obliquely with respect to the perpendicular to said ring wall positions.
    The invention will subsequently be elucidated on the basis of an exemplary embodiment shown in the figures.
    Figure 1 shows a rear view of a valve unit in the closed state.
    Figure 2 shows a vertical longitudinal section through the valve unit of Figure 1.
    Figure 3 shows a top view of the valve unit of Figure 1.
    Figure 4 shows a rear view of the valve unit in the open state
    Figure 5 shows a side view of the valve unit of Figure 4.
    Figure 6 shows a top view of the valve unit of Figure 4.
    Figure 7 shows a perspective view of the valve unit in the open state.
    Figure 8 shows a longitudinal section through a ventilation system with the valve unit according to the preceding figures in the open position.
    Figure 9 shows the side view of the ventilation system with. the valve unit when closed.
    The valve unit 14 shown in Figs. 1-7 consists of a ring 1 of such dimensions that it can be received in a ventilation duct 13, as shown in Figs. 8 and 9. Also, such a ring 1 can be stumped between the facing each other surfaces of two pieces of ventilation duct. Diametrically opposite each other, two axle stubs 3, 3 'are mounted in the ring 1, which together act as a single axis and define a center of rotation 11. These axle stubs 3, 3 'are located. as shown in Figs. 1 and 4. in the longitudinal plane of the ring 1, but are slightly inclined or tilted in that plane. The lower attachment point 5 of the lower axle stub 3 is slightly offset relative to the upper attachment point 4 of the upper axle stub 37 The nominal flow direction for which the valve unit is intended. is indicated by the arrow 2 in figures 2, 5, 8 and 9; it can therefore be stated that the lower attachment point 5 is displaced in the direction of flow relative to the upper attachment point 4.
    A valve 6 is suspended from the obliquely oriented axle stubs 3, 3 'and consists of the two valve parts 7 and 8. These tilting parts 7 and 8 are suspended from the axle stubs 3, 3 by means of the hinges 9, 9' rotatable between the closed position according to figures 1-3 and the opened position according to figures 4-6. The diagrammatically indicated centers of gravity 10, 10 'of the two valve parts 7, 8 are eccentric with respect to the hinges 9, 9' and the axle stubs 3, 37. both valve parts 7. 8 will rotate to the open position as shown in figures 4-6. Even with very weak air flows the valve parts 7, 8 are in the open position as shown in figure 8. This can be explained on the basis of the gravity vector G. which can be dissolved in a first force vector Ga which is always parallel to the axis of rotation. 11. and a second force vector Gm which is always perpendicular to the axis of rotation 11. In most positions of the valve parts 7, 8 the moment supplies arm a, which is defined by being perpendicular to the second force vector Gm and to the axis of rotation 11 a moment on the relevant valve part which is the same as the product of Gm and a. As can be seen in the figures, and in particular in the plan view of Figure 3, this moment produces a pre-load on the valve parts which attempts to turn it to their open position. In the absence of an air flow, the valve parts 7, 8 will therefore rotate to the open position under the influence of gravity, as shown in Figures 4-7.
    However, as soon as a stronger flow occurs, the valve parts 7, 8 turn against the force of gravity to a more, or completely, closed position as shown in Figs. 1-3 and in Fig. 9. To ensure that the air forces can engage on the valve parts 7, 8, they are placed in the maximum open position at a small angle relative to each other as can be seen in figure 6. This maximum opened position is obtained by stops for the open position. In the closed position, the valve parts 7, 8 come to abut against the stops 12 for the closed position, which are placed downstream of said valve parts 7, 8.
    For the purpose of being able to better control the decision movement of the valve under the influence of the flow of air, the torsion spring 16 is provided. This torsion spring 16 is arranged around two axle pieces 17. 17 '. each of which is attached to a respective valve member 7. 8. Under the influence of this torsion spring 16, the two valve parts 7. 8 are held resiliently pressed to the open position. The elasticity of this torsion spring 16 is selected such that. depending on the expected intensity and flow rate of the air flow in the ventilation channel 13, the valve reacts such that a constant flow rate can nevertheless be obtained at varying flow rates. At higher flow rates, the valve will, after all, obstruct the passage in the ventilation duct 13 to a greater extent than one at lower flow rates.
    List of reference signs 1. Ring 2. Fiji flow direction 3 .. 3 'Shaft stub 4. Upper shaft attachment point 5. Lower shaft attachment point 6. Valve 7 .. 8, Valve part 9 .. 9' Hinge 10 .. 10 'Center of gravity valve part 11. Center of rotation 12. Stop 13. Ventilation channel 14. Valve unit G Gravity a Moment arm
    Grn Perpendicular disbanded from G perpendicular to the axis of rotation
    Go Parallel dissolved from G parallel to axis of rotation
    权利要求:
    Claims (19)
    [1]
    Conclusions
    Zd (regulating ventilation system, comprising a ventilation channel (13) with a peripheral wall defining an upper side and a lower side, which ventilation channel is designed for a flow with one predetermined flow direction, and a self-regulating valve (6) accommodated in the ventilation channel, which at least one includes a valve member (7, 8) rotatable about an axis of rotation (11) and which valve member is transferable from a relatively open position to a relatively closed position under the influence of the flow through the ventilation duct (13), and in the absence of the flow is in the relatively open position, characterized in that the axis of rotation {11) intersects the top and bottom of the ventilation duct, that the axis of rotation (11) is inclined in a plane parallel to the direction of flow with respect to the vertical, and that the axis of rotation (11) is eccentric with respect to the center of gravity (10, 10 ') of the valve part (7. 8) such that under the influence of the The valve member is preloaded in the direction towards its relatively open position.
    [2]
    Ventilation system as claimed in claim 1, wherein the valve comprises two valve parts (7, 8) which are each rotatably suspended around an axis of rotation (11), such that under the influence of gravity the valve parts are preloaded to their open position,
    [3]
    Ventilation system according to claim 2, wherein the valve parts (7, 8) are rotatable about a common axis of rotation (11).
    [4]
    Ventilation system according to one of the preceding claims, wherein the axis of rotation (11) is located in a substantially vertical plane that extends in the direction of flow.
    [5]
    Ventilation system according to one of the preceding claims, wherein the valve parts (7. 8) and the cross-section of the ventilation duct are symmetrical with respect to the axis of rotation (11).
    [6]
    Ventilation system as claimed in any of the foregoing claims, wherein stop means (12) are provided and each valve part (7, 8) is urged, and possibly against, the stop means under the influence of the flow and against the influence of gravity,
    [7]
    A ventilation system according to any one of the preceding claims, wherein stop means (12) are provided which are located on the downstream side of each valve part (7, 8),
    [8]
    A ventilation system according to any one of the preceding claims, wherein the position of each axis of rotation (11) on the underside of the ventilation channel (13) is shifted in the direction of flow relative to the position of said axis of rotation (11) on the top of the ventilation duct (13).
    [9]
    Ventilation system according to any one of the preceding claims, wherein in the closed state of each valve part (7. 8). the outer peripheral contour thereof and the inner peripheral contour of the ventilation duct (13) are identical or similar.
    [10]
    A ventilation system according to any one of the preceding claims, wherein a biasing means (16) is provided by means of which each valve part (7, 8) is preloaded to the relatively open position,
    [11]
    A ventilation system according to claim 9 or 10, wherein the biasing means comprises a biasing spring, such as a torsion spring (16).
    [12]
    A ventilation system according to claim 11. wherein the torsion spring (16) is positioned concentrically with respect to the axis of rotation (11).
    [13]
    A ventilation system according to any one of the preceding claims, wherein the axis of rotation (11) is defined by an axis or by axis stubs (3, 3 ') aligned with respect to each other which are on the top and bottom of the. ventilation duct (13) is / are attached, and wherein each valve member (7, 8) is rotatably suspended on the shaft or shaft stubs (3. 3 ').
    [14]
    A ventilation system according to any one of the preceding claims, wherein a center of rotation (11) coincides with a valve member (7, 8).
    [15]
    A ventilation system according to any one of the preceding claims, wherein each valve member (7, 8) is substantially flat.
    [16]
    A ventilation system according to any one of the preceding claims, wherein the gravity exerted on the valve member (7, 8) has a parallel disconnected Ga parallel to the axis of rotation (II) and a perpendicularly disconnected Gm perpendicular to the axis of rotation. and wherein perpendicular to the axis of rotation and perpendicular to the perpendicular dissolved the moment arm a of the perpendicular dissolved Gm with respect to the axis of rotation is determined such that the perpendicular dissolved one moment equal to the product of Gm and a on the valve part (7. 8) that is directed in the sense of turning the valve member to the relatively open position.
    [17]
    A ventilation system according to any one of the preceding claims, wherein each valve part (7, 8) is received in a ring (1). and wherein the ring is mounted between two ventilation duct parts or is received in a ventilation duct (13).
    [18]
    A valve system (14) for a ventilation system according to claim 17, comprising a ring (1) with a peripheral wall defining an upper side and a lower side, as well as a self-regulating valve (6) received in the ring and comprising at least one valve part (7, 8) which is rotatable about an axis of rotation (11), wherein the axis of rotation (11) intersects the top and bottom of the ring, that the axis of rotation (11) is inclined in a plane parallel to the axis of the ring with respect to the vertical and that the axis of rotation (11) is eccentric with respect to the center of gravity (10, 10 ') of the valve member (7, 8) such that. under the influence of gravity the valve part is preloaded in the direction towards its relatively open position.
    [19]
    A valve unit according to claim 18. wherein the pivot suspension (3. 3 ') is attached to the ring (1) on both sides of the passage at ring wall positions and is oriented obliquely with. with respect to the perpendicular to said ring wall positions.
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    同族专利:
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    NL2014389B1|2016-10-14|
    BE1023442A1|2017-03-21|
    引用文献:
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    DE3510167A1|1985-03-21|1986-09-25|Arnold 7000 Stuttgart Sobetzko|Flap valve|
    DE19919701B4|1998-10-22|2004-12-16|Schulte, Günter|Smoke protection device for buildings|
    DE20104122U1|2001-03-08|2001-07-05|Kermi Gmbh|Locking flap and supply air element|
    JP4546222B2|2004-11-12|2010-09-15|日本サーモスタット株式会社|Ventilator with thermoactuator|
    PL2103875T3|2008-03-19|2019-04-30|Almeva Ag|Non-return valve for an exhaust duct of flue gases of a boiler|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NL2014389|2015-03-03|
    NL2014389A|NL2014389B1|2015-03-03|2015-03-03|Self-regulating ventilation system and valve unit therefor.|
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