• 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 device comprises a ventilation pipe as well as a valve assembly provided with a valve housing and a valve body which is rotatably suspended in the valve housing. The valve body carries a counterweight such that the valve body is urged into an opened position under the influence of gravity in an oblique direction with respect to the longitudinal direction of the valve housing. The valve body is urged to the closed position under the influence of an air flow. The valve housing is fixed in the interior of the ventilation pipe, the valve body being suspended in the valve housing by means of an eccentric axis of rotation.
    公开号:BE1020098A3
    申请号:E2010/0618
    申请日:2010-10-21
    公开日:2013-05-07
    发明作者:Luc Louis Renson
    申请人:Vero Duco Nv；
    IPC主号:
    专利说明:

    Self-regulating ventilation device and valve assembly therefor
    The invention relates to a self-regulating ventilation device, comprising a ventilation tube and a valve assembly provided with a valve housing and a valve body that is rotatably suspended in the valve housing, which valve body carries a counterweight such that the valve body under the influence of gravity in an opened a position is urged obliquely with respect to the longitudinal direction of the valve housing and is urged to a closed position under the influence of an air flow, which valve housing is fixed in the interior of the ventilation pipe.
    Such a self-regulating ventilation device is known from the European patent publication EP0479228. A self-regulating valve is described in this publication. The valve housing in which this valve is rotatably mounted is mounted internally in the ventilation pipe. An O-ring on the outside of the valve housing ensures an airtight seal. Under the influence of gravity, the valve is opened in an inclined position with respect to the longitudinal direction of the valve housing. The valve will be closed under the influence of the air flow.
    In addition, such a self-regulating ventilation device is known from the American patent US3452762. This patent describes a ventilation device with a control valve, consisting of a valve housing which can be arranged internally in a ventilation pipe and in which a rotatable valve body is located. Under the influence of gravity, the valve body is opened in an inclined position with respect to the longitudinal direction of the valve housing. The valve body will be closed under the influence of the air flow.
    Such a ventilation device is intended for ventilating certain spaces in a building. An example is a roof outlet for ventilating a room such as an attic space. This may involve both the supply of air and the removal of air. It is usually desirable for such a space to be ventilated in a constant manner, without excessive flow fluctuations occurring. In strong winds, however, a higher flow rate than desired can occur due to the ventilation device, depending on the pressure difference between the outside and the inside of the roof. As a result, the comfort in the relevant room can be greatly reduced.
    Many such roof penetrations have already been installed in practice, but they all have the disadvantage described above. On the other hand, such defective roof penetrations are still used for new construction or renovation. The object of the invention is therefore to provide a solution to this problem that is applicable both to existing construction and to new construction and renovation.
    This object is achieved in that the valve body is suspended in the valve housing by means of an eccentric axis of rotation, which valve body has valve body parts on either side of the axis of rotation, a valve body part having a relatively large surface and the other valve body part a relatively small surface, which valve body part with relatively small surface carries the counterweight such that the valve body under the influence of a. air flow coming from the side of the axis of rotation where the relatively large valve body part is located in the open position of the valve body is urged to the closed position.
    Because the valve body parts on both sides of the axis of rotation have an unequal size, the position of the valve body can be influenced by the strength of the air flow. If the strength thereof increases, a greater force is exerted on the valve body part that has a relatively large surface area than on the valve body part with relatively small surface area. As a result, a rotation of the valve body to the closed position occurs. As a result, the useful passage through the ventilation device is reduced or throttled, in such a way that an excessive air flow is prevented from entering the ventilated space.
    The ventilation device according to the invention has a passage in the form of a ventilation pipe, which can be mounted in the usual manner in a roof and the like. The assembly can be done entirely in the traditional way, since the outside of the ventilation pipe has remained unchanged. In the ventilation pipe, however, there is now a self-regulating valve which is designed in such a way that a fairly uniform flow can be maintained, which is largely independent of the external conditions such as wind force and wind direction.
    A counterweight is preferably attached to the valve body for the purpose of maintaining the valve body in the obliquely open position with respect to the valve housing. This counterweight is located within the circumference of the valve body, such that the valve assembly can be mounted in the ventilation pipe without further provisions. The counterweight can project laterally with respect to one of the flat surfaces of the valve body, such that the inclined rest position can be obtained. The valve housing may have a stop against which the valve body abuts in the fully open position.
    The counterweight ensures that the valve body remains in the desired open position at normal flow rates. Depending on the mass and leverage of the counterweight, the operation of the valve can occur faster or less quickly.
    As already mentioned above, the ventilation tube can be a traditional tube, so that installing it does not encounter any problems. That is, outside the ventilation pipes, no parts must belong to the valve assembly. It is also desirable not to adjust the interior of the ventilation pipe, whereby cost advantages are obtained. Such an embodiment can be achieved if the maximum transverse dimensions of the valve assembly are at most equal to the internal dimensions of the cross-section of the ventilation pipe.
    Such an embodiment can be used in a useful manner when mounting a valve assembly in the ventilation pipe. In particular, it is attractive here that the valve housing can be clamped in the interior of the ventilation pipe. Such a clamping can be performed in many different ways; the variant in which the valve housing bears external ribs which are clamped against the inner surface of the ventilation pipe is mentioned as an example.
    In that connection it is furthermore important that the axis of rotation can be determined by opposite pivots of the valve body. These pivots are accommodated in corresponding recesses in the valve housing and wherein the maximum dimension measured over the pivots is at most equal to the internal dimension of the ventilation pipe. In order to still allow a certain degree of ventilation even with a fully closed valve body, the valve body can have a recess for allowing a flow with the valve body closed.
    The invention further relates to a valve assembly for use with the ventilation device described above. Such a valve assembly can be retrofitted in a very simple manner to already installed ventilation pipes. It is only important that the outer circumference of the valve housing is adjusted to the inner circumference of the ventilation pipe in such a way that mounting of the valve assembly in the ventilation pipe is made possible, for example by clamping.
    The invention will be explained in more detail below with reference to an exemplary embodiment shown in the figures.
    Figure 1 shows a roof terminal in side view.
    Figure 2 shows on a larger scale a vertical cross-section through the roof terminal according to II of Figure 1.
    Figure 3 shows a view in perspective and obliquely from above of the valve assembly.
    Figure 4 shows a perspective and oblique view from below of the valve assembly.
    Figure 5 shows a perspective view of the valve body of the valve assembly.
    The roof duct 1 shown in figure 1 is included in a hole 3 in a roof 2. Although a flat roof 2 is shown in the example shown, the roof duct 1 can also be located in a different type of roof, such as a sloping roof. The roof outlet consists of the ventilation pipe indicated in its entirety by 4, on the top of which the protective cover 5 is arranged and the bottom 6 from which flows into the space 7, such as an attic room.
    Included in the ventilation pipe 4 is the valve assembly indicated in its entirety by 8, as shown in the cross-section of Figure 2. This valve assembly 8 consists of the valve housing 9, which is annular in this exemplary embodiment, and of the valve body 10. This valve body 10 has two axle journals 11 which are rotatably inserted into corresponding openings 12 of the annular valve housing 9. Together these axis journals define the axis of rotation 20. In the exemplary embodiment shown, the valve housing 9 has two stops 19 against which the valve body 10 abuts in the fully opened position.
    As shown in Figs. 3 and 4, the annular valve housing 9 is provided on the outside with a number of ribs 13. With these ribs 13, the valve housing 9, and thus the entire valve assembly 8, is secured by clamping against the inner surface 17 of the ventilation pipe. 4. This has the advantage that the valve assembly 8 can be arranged in a simple manner in roof ducts 1 that have already been installed.
    As shown in Figure 5, the axis of rotation 12 is arranged eccentrically with respect to the valve body 10 ', which is circular in this exemplary embodiment. As a result, the valve body 10 is divided into a relatively small valve body part 14 and a relatively large valve body part 15. On the relatively small valve body part 14 a counterweight 16 is mounted, as can be seen in Figures 4 and 5. Due to the eccentric placement of the pivot axis 12 and the mass of the counterweight 16 assumes, in the rest position, that is, when no flow occurs, the valve body 10 the open position shown in Figures 3 and 4. In that position, outside air can freely enter the space 7 via the ventilation pipe 4.
    However, as soon as a relatively strong flow occurs through the ventilation tube 4, the valve body 10 rotates around the axis of rotation 12 to a more closed position. This is promoted by the relatively large valve body part 15, which protrudes obliquely upwards into the air flow. As soon as the valve body 10 is completely closed, fresh air can still enter the space 7 through the central recess 18.
    Although a roof outlet has been described in the following, in which the air flows downwards, it is also possible to design the ventilation device in such a way that the air flows upwards to remove it from the room. Furthermore, the various components such as valve body, valve housing and ventilation pipe in the embodiment shown are designed with a circular cross section. However, other designs are also possible, such as with oval, square or rectangular cross-sections and the like.
    List of reference signs 1. Roof outlet 2. Roof 3. Hole in roof 4. Ventilation pipe 5. Cap 6. Lower end of ventilation pipe 7. Ventilated space 8. Valve assembly 9. Valve housing 10. Valve body 11. Stub body 12. Opening 13. Ribbe valve housing 14. Relatively small valve body part 15. Relatively large valve body part 16. Counterweight 17. Inner wall ventilation pipe 18. Central recess 19. Stopper 20. Pivot axis
    权利要求:
    Claims (13)
    [1]
    Self-regulating ventilation device, comprising a ventilation pipe (4) and a valve assembly (8) provided with a valve housing (9) and a valve body (10) rotatably suspended in the valve housing, said valve body (10) being a counterweight (16) bears such that the valve body (10) is forced under the influence of gravity into an open position which is obliquely directed with respect to the longitudinal direction of the valve housing (9) and is forced to a closed position under the influence of an air flow, which valve housing ( 9) is fixed in the interior (17) of the ventilation pipe (4), characterized in that the valve body (10) is suspended in the valve housing (9) by means of an eccentric axis of rotation (12), which valve body (10) on either side of the axis of rotation has valve body parts (14, 15) of which one valve body part (15) has a relatively large surface and the other valve body part (14) a relatively small surface, which valve body part (14) with relatively small surface counterweight (16) bears such that the valve body (10) under the influence of an air flow coming from the side of the axis of rotation (12) where the relatively large valve body part (15) is located in the open position of the valve body (10), towards the closed position.
    [2]
    The device of claim 1, wherein the counterweight (16) attached to the valve body (10) is within the circumference of the valve body (10).
    [3]
    Device according to one of the preceding claims, wherein the maximum transverse dimensions of the valve assembly (8) are at most equal to the internal dimensions of the cross-section of the ventilation pipe (4).
    [4]
    Device according to one of the preceding claims, wherein the valve housing (8) is clamped in the interior (17) of the ventilation pipe (4).
    [5]
    Device according to one of the preceding claims, wherein the valve housing (9) carries external ribs (13) which are clamped against the internal surface (17) of the ventilation pipe (4).
    [6]
    Device according to any one of the preceding claims, wherein the axis of rotation (12) is defined by opposite points of rotation (11) of the valve body (10).
    [7]
    Device according to claim 6, wherein the turning pins (1.1) are accommodated in corresponding recesses (12) in the valve housing (9) and wherein the maximum dimension measured over the turning pins (11) is at most equal to the internal dimension of the ventilation pipe (4).
    [8]
    Device according to one of the preceding claims, in which the valve body (10) has a recess (18) for allowing a flow with the valve body closed.
    [9]
    A device according to any one of the preceding claims, wherein the outer circumference of the valve body (10) and the inner circumference of the valve housing (9) are uniform in shape and substantially connect to each other in the closed state of the valve assembly (8).
    [10]
    Device as claimed in any of the foregoing claims, wherein the cross-section of the ventilation pipe (4) and of the valve housing (9) are circular.
    [11]
    Device as claimed in any of the foregoing claims, wherein the ventilation pipe (4) is oriented vertically.
    [12]
    Device according to one of the preceding claims, wherein the open position of the valve body (10) is determined by a stop (19) on the valve housing (9).
    [13]
    A valve assembly (8) for a ventilation device according to any one of the preceding claims, provided with a valve housing (9) and a valve body (10) pivotally suspended in the valve housing, which valve body (10) carries a counterweight (16) such in that the valve body (10) is forced under the influence of gravity into an open position which is obliquely directed with respect to the longitudinal direction of the valve housing (9) and is urged to a closed position under the influence of an air flow, valve body (10) is suspended in the valve housing (9) by means of an eccentric pivot axis (11), which valve body has valve body parts (14, 15) on either side of pivot axis of which one valve body part (14) has a relatively large surface and the other valve body part (15) a relatively small area, which relatively small area valve body part (14) carries the counterweight (16) such that the valve body (10) comes under the influence of an air flow is forced from the side of the axis of rotation (11) where the relatively large valve body part (15) is located in the open position of the valve body (10) to the closed position.
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    同族专利:
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    NL2003680C2|2011-04-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    IL26014A|1965-06-28|1971-03-24|Fahre O|Automatic regulating valve for ventilation plants|
    AT329813B|1973-07-03|1976-05-25|Siegwart Emil|FLOW REGULATOR FOR AIR PIPES|
    DE3128726A1|1981-07-21|1983-02-10|Gebrüder Trox, GmbH, 4133 Neukirchen-Vluyn|Pressure reducer for air-guide ducts in air-conditioning installations|
    GB2183788B|1985-11-29|1989-10-04|Coal Ind|Dampers|
    FR2667378B1|1990-10-02|1993-02-19|Cit Alcatel|THREADING VALVE FOR LIMITING THE VARIATIONS IN GAS FLOWS IN A PIPE.|
    JP3458021B2|1995-06-22|2003-10-20|鉐 阿部|Air flow control structure at air outlet for air conditioning|
    FR2770411B1|1997-10-30|2000-01-21|Strulik Sa|FIREPROOF VALVE FOR AERATION DUCT|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NL2003680|2009-10-21|
    NL2003680A|NL2003680C2|2009-10-21|2009-10-21|SELF-REGULATING VENTILATION DEVICE AND VALVE COMPOSITION THEREFOR.|
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