• 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 fresh air protection comprises a roof (10) and a side wall (12). The roof is attached to its edges by the side wall, so that they delimit a trough-shaped space that is open on one side. The side wall has a free edge (15) and flow openings (13) for the flow of air. The fresh air protection is planned to be installed on the roof of a building. (100), so that the roof is substantially horizontal and the free edge of the side wall is directed downwards. The fresh air protection comprises a tubular duct connection (14), which has a first end (14a) extending into the space delimited by the roof and the side wall, to a distance from the roof. Between the side wall and the outer surface of the duct connection there is an annular gap (24) for the flow of air. The side wall is supported by means of a funnel-shaped separation piece (18) at the duct connection. The separating piece has a disc-shaped wall which has flow holes (20) for the flow of air. The distance of the flow openings in the side wall from the roof and the distance of the flow holes in the wall of the separation piece from the roof is greater than the distance of the first end of the duct connection from the roof. Figure 1b
    公开号:SE1450343A1
    申请号:SE1450343
    申请日:2014-03-25
    公开日:2014-09-27
    发明作者:Tommi Uksila
    申请人:Climecon Oy；
    IPC主号:
    专利说明:

    The objects according to the invention are achieved with a fresh air protection, which is characterized by what is presented in the independent patent claim. Some advantageous embodiments are presented in the dependent claims.
    The invention relates to a fresh air protection, which is intended to be installed on the roof of a building, at the end of an inlet duct leading to a ventilation apparatus. The fresh air protection comprises a roof and a side wall. The roof is attached to its edges by the side wall, so that they delimit a trough-shaped space that is open on one side.
    Advantageously, the roof can be loosened or opened for service and cleaning of the fresh air protection. The side wall has a free edge and flow openings for the flow of air. The fresh air protection also comprises a tubular duct connection, which has a first end, which extends into the space delimited by the roof and the side wall, to a distance from the roof. The channel connection can be round or polygonal in its cross section, such as a quadrilateral. Fresh air protection is characterized in that the distance of the flow openings in the side walls from the roof is greater than the distance of the first end of the duct connection from the roof. The fresh air protection is planned to be installed on the roof of a building, so that the roof is essentially horizontal and the free edge of the side wall is directed downwards and extends to a distance from the surface of the building's roof. There is thus a clear gap between the surface of the building's roof and the free edge of the side wall. The duct connection is then in a substantially vertical position. In a use situation, fresh air flowing in a horizontal direction through the flow openings of the fresh air protection can thus not flow straight into the first end of the duct connection, but the air must rise slightly upwards towards the ceiling after it has flowed through the flow openings before the air flow can turn into duct the connection. Due to the flow route of the fresh air, raindrops cannot pass even in heavy rainfall along the flow route of the air to the first end of the duct connection and there via into the inlet air duct.
    In an advantageous embodiment of the fresh air protection according to the invention, the side wall lies around the first end of the duct connection, so that between the side wall and the outer surface of the duct connection there is an annular gap for the flow of air. The circuit formed by the side wall is thus clearly larger in shape than the circuit formed by the outer surface of the first end of the duct connection. Fresh air can thus flow under the free edge of the side wall into the gap between the inner surface of the side wall and the outer surface of the duct connection and further into the first end of the duct connection. In this embodiment, fresh air is thus led into the fresh air protection both from the side through the flow openings of the side walls and from below through the gap between the free edge of the side walls and the duct connection. Due to the large surface area of the air flow path, the flow rate of fresh air into the cover becomes small.
    A second advantageous embodiment of the fresh air protection according to the invention has a funnel-shaped separation piece, which has a first end which is attached to the side wall and a second end which is attached to the duct connection. The side wall is thus supported by means of the separation piece at the duct connection. Advantageously, the distance of the first end of the separation piece and the first end of the duct connection from the roof is substantially equal. The separation piece has a disc-shaped wall, which has flow holes for the flow of air. Advantageously, the separating piece completely covers the annular gap between the duct connection and the side wall, whereby all fresh air flowing to the first end of the duct connection must flow through the hole of the separating piece. The separating piece can in its shape be a cut cone or a cut pyramid which fits together with the cross-sectional shapes of the side wall and the channel connection. The primary task of the separation piece is to ensure that rainwater and swirling snow do not enter the duct connection. Thanks to the funnel-shaped shape of the separation piece, its wall has a large surface, whereby there are many flow holes for the flow of fresh air. Thus, the pressure difference caused by the holes and the increase in flow rate due to the pressure difference remains small.
    In a third advantageous embodiment of the fresh air protection according to the invention, the distance of the flow holes in the wall of the separation piece from the roof is greater than the distance of the first end of the duct connection from the roof. Thus, when it has passed through the separation piece, the fresh air must first flow a certain piece towards the roof, before it can turn and flow into the end of the duct connection.
    In yet another advantageous embodiment of the fresh air protection according to the invention, the distance of the free edge of the side wall from the roof is greater than the distance of the other end of the separation piece from the roof. The separation piece in a fresh air protection installed in place in accordance with its purpose of use is thus completely "hidden" inside the side wall.
    An advantage of the fresh air protection according to the invention is that it achieves a very high degree of water separation at the same time as the pressure loss and the air flow velocities remain small.
    In addition, an advantage of the invention is that it effectively prevents swirling snow and debris, such as leaves, from entering the inlet air duct. A further advantage of the invention is that it makes it possible to lower the construction height of the protection.
    A further advantage of the invention is that it enables the protection to be realized with a modular structure, so that the same basic solutions are used in different sizes and in their different appearance.
    Next, the invention is described in detail. The description refers to the accompanying drawings, where figure 1a shows as an example a fresh air protection according to the invention seen from the side and figure 1b shows as an example the fresh air protection shown in figure 1a as a cross-section and figure 1c shows as an example the fresh air protection shown in figures 1a and 1b seen from above.
    Figure 1a shows as an example a fresh air protection according to the invention seen from the side. The picture shows the fresh air protection in the position, which it will be in its task according to the purpose of use. The fresh air protection has a side wall 12, which comprises four substantially identical edge walls. The horizontal section of the side wall is thus square in shape. Figure 1a shows one of the four edge walls of the side wall. The side wall has an upwardly directed upper edge 17 in the figure and a downwardly directed free edge 15. A roof 10 is attached to the upper edge of the side wall. The roof is attached to the edges of the side wall in a removable way, which enables service and cleaning of the fresh air protection. The roof can also be attached to the side wall with a fixed attachment that can be opened, for example a hinge attachment. The side wall has a groove 22 which goes around it, which groove divides the side wall into two parts when looking at the side wall in its height direction, an upper part 12a and a lower part 12b. In the lower part of the side wall there are in a row a number of rectangular shaped flow openings 13. The size of the flow openings is dimensioned so that a possible largest flow route for fresh air is obtained through the lower part of the side part, but so that the lower part of the side wall retains sufficient structural strength and rigidity. . The upper part of the side wall is a uniform, air and waterproof wall.
    Figure 1b shows the fresh air protection shown in figure 1a as a vertical section. The side wall 12 and the roof 10 together form a downwardly opening trough-shaped structure, which delimits an open space inside itself. The fresh air protection comprises a tubular duct connection 14 round in its cross-sectional shape, which has a first end 14a and a second end 14b. The first end of the duct connection extends into the space delimited by the side wall and the roof, so that the first end remains at a distance E from the roof. The other end of the duct connection remains outside the space delimited by the side wall and the roof. The duct connection is located substantially in the middle of the area delimited by the side wall, so that an annular gap 24, which revolves around the duct connection, remains between the outer surface of the duct connection and the inner surface of the side wall. The other end of the duct connection is dimensioned and designed so that it can easily be connected to one end of an inlet air duct leading to a ventilation device.
    The side wall 12 is supported at the duct connection 14 by a separating piece 18.
    The separating piece is in its shape a funnel-shaped part, which has a first end, a second end and a disc-shaped wall. The wall has a plurality of substantially spaced flow holes 20 for the flow of air. The flow holes can be round or polygonal in shape. The size and number of flow holes should be as large as possible, so that the pressure loss they cause is as small as possible. On the other hand, the holes should be small enough so that animals and birds do not enter through them into the fresh air protection. To meet the above requirements, a suitable diameter for the flow holes is 15-25 mm in size. The first end of the separation piece has an octagonal shape (Figure 1c) which matches the shape of the inner surface of the side wall, and the other end of the separation piece has a round shape which matches the outer surface of the duct connection 14. The separating piece is attached at its first end to the inner surface of the side wall, so that the first end of the separating piece and the first end of the duct connection are at substantially the same distance from the roof 10. The separating piece is attached at its second end to the outer surface of the duct connection is less than the distance of the free edge 15 of the side wall 12 from the roof 10. The separating piece is thus hidden from the side inside the space delimited by the side wall and the roof. The parts of the fresh air protection are made of metal, preferably steel, and the parts are fastened to each other with a suitable fastening method, such as welding, screws or rivets.
    Figure 1b shows with the help of arrows drawn with dashed lines how fresh air flows into the fresh air protection in a protection installed on site according to its purpose of use. The fresh air protection is installed in place on the roof of a building, at the inlet air duct leading to a ventilation device, so that the other end of the duct connection is connected to the end of the inlet air duct and the free edge of the side wall 12 is directed downwards and extends to a distance from the roof surface 100 of the building. When the air conditioner is running, it sucks in fresh air along the inlet air duct, creating a negative pressure inside the duct connection. Due to the negative pressure created, fresh air flows from outside the fresh air protection into the protection. The inflowing fresh air first flows into the annular space 26 between the lower part 12 of the side wall 12 and the outer surface of the duct connection 14. The fresh air can flow into the space both from the side through the flow openings 13 in the side wall and from below through the gap between the free edge 15 of the side wall and the outer surface of the duct connection. From the gap, the fresh air flows further through the flow holes 20 in the separation piece 18 to an upper space 28 delimited by the separation piece, the upper part 12a of the side wall and the roof 10, into which space the first end of the duct connection opens. Both the flow openings 13 of the side wall and the flow holes 20 of the separation piece are located in the height direction lower than the first end of the duct connection 14, which forces the fresh air to flow upwards before it flows into the duct connection. This shape of the fresh air flow route prevents rainwater and swirling snow from entering the duct connection and from there into the inlet air pipe.
    The fresh air protection according to the invention can easily be scaled according to the needs of use to different sizes and shapes without changing the basic structure of the protection. The height of the side wall of the fresh air protection can be, for example, 600 mm-1500 mm and the width 1200 mm-3000 mm. The duct connection leading into the fresh air protection can be round, square or quadrangular in its cross-sectional shape and its cross-sectional area can vary within wide limits. The width of the cross-section of a rectangularly shaped duct connection can, for example, be 300 mm-800 mm and the length 800 mm-1800 mm. The side wall 12 may have a cross-sectional shape that deviates from a square, such as an elongated rectangle, a polygon, or a round cross-section. The invention also enables a flexible connection of side walls and duct connections with different cross-sectional shapes by means of simple adapter pieces. In this case, a polygonal side wall can be connected to a channel connection round to the cross-sectional shape or to a round side wall to a square channel connection to a cross-sectional shape.
    Figure 1c shows as an example the fresh air protection shown in figures 1a and 1b seen from above, so that the roof belonging to the fresh air protection is removed. The first end of the fresh air protection separating piece 18, which is attached to the side wall 12, is octagonal in its cross-sectional shape. The separating piece is attached to a side wall 12 squared to the cross-sectional shape to those of its four walls which are aligned with the side walls of the side wall. In the corners of the inner part delimited by the side wall, triangular corner spaces thus become, which are not attached to the edge of the separation piece. These corner spaces are covered by cover plates 40. With the cover plates, fresh air can therefore not flow into the cover. A side wall square to the cross-sectional shape can be replaced by a side wall octagonal to its cross-sectional shape which matches the cross-sectional shape of the separation piece.
    The appearance of a fresh air protection similar to the basic structure can thus easily be changed by using a side wall with a different shape. The shape of the fresh air protection can also be enlarged in one direction, so that the dimensions of its opposite ends and the shapes of the side wall remain as before. This gives the fresh air protection a shape that is elongated seen from above. The appearance of the fresh air protection can thus easily be changed with the help of side walls with different shapes. The modular structure of the fresh air protection enables the production of the protection as series production and the production of the internal parts of the protection and various side walls for storage.
    Some advantageous embodiments of the fresh air protection according to the invention have been described above. The invention is not limited to the solutions described above, but the inventive idea can be applied in various ways within the limits defined by the claims.
    权利要求:
    Claims (10)
    [1]
    Fresh air protection, comprising a roof (10), a side wall (12), having a free edge (15) and flow openings (13) for the flow of air, and a tubular duct connection (14), having a first end (14a), which extends into a trough-shaped space delimited by the roof (10) and the side wall, to a distance from the roof (10), characterized in that the distance of the flow openings (13) in the side wall (12) from the roof ( 10) is greater than the distance of the first end (14a) of the duct connection (14) from the ceiling (10).
    [2]
    Fresh air protection according to claim 1, characterized in that the side wall (12) lies around the first end (14a) of the duct connection (14), so that there is an annular gap (24) for the flow of air between the side wall and the outer surface of the duct connection. .
    [3]
    Fresh air protection according to claim 1 or 2, characterized in that it has a funnel-shaped separation piece (18), which has a first end which is attached to the side wall (12) and a second end which is attached to the duct connection (14) and a disc. shaped wall, which has flow holes (20) for the flow of air.
    [4]
    Fresh air protection according to claim 3, characterized in that the distance of the flow holes (20) in the wall of the separation piece (18) from the roof (10) is greater than the distance of the first end (14a) of the duct connection (14) from the roof (10).
    [5]
    Fresh air protection according to Claim 3 or 4, characterized in that the first end of the separating piece (18) and the distance of the first end (14a) of the duct connection (14) from the roof (10) are substantially equal.
    [6]
    Fresh air protection according to one of Claims 3 to 5, characterized in that the distance of the free edge (15) of the side wall (12) from the roof (10) is greater than the distance of the other end of the separating piece (18) from the roof.
    [7]
    Fresh air protection according to one of Claims 1 to 5, characterized in that the roof (10) can be taken loose or opened.
    [8]
    Fresh air protection according to one of Claims 1 to 7, characterized in that the duct connection (14) is round in its cross-sectional shape.
    [9]
    Fresh air protection according to one of Claims 1 to 7, characterized in that the duct connection to its cross-sectional shape is a polygon, advantageously a quadrilateral. 9
    [10]
    Fresh air protection according to one of Claims 3 to 9, characterized in that the separation piece (18) is shaped like a cut cone or cut pyramid.
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    同族专利:
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    FI125482B|2015-10-30|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2016-06-21| NAV| Patent application has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    FI20135289A|FI125482B|2013-03-26|2013-03-26|Fresh air hood|
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