JP2009068757A - Outdoor terminal of air supply system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outdoor terminal of an air supply system capable of not only blocking intrusion of rain and wind, but also easily maintaining and managing a filter for capturing dust, small insects and the like, and further suppressing clogging of the filter and increase of pressure loss. <P>SOLUTION: In this outdoor terminal of the air supply system comprising a hood 7 for collectively covering an upper part, a front part and side parts of an outdoor-side opening portion 5 of a connection cylindrical portion 4 mounted in a state of communicating with an outdoor-side opening end 3 formed on an external wall of a building, and opened downward at its lower face as an air supply port 6, the filter 10 having a front face, side faces, a lower face and a ventilation face 12 sufficiently more wider than an opening area of the air supply port 6 of the hood 7 and having the shape retaining property for preventing passing of small substances through the ventilation face 12 is connected with the air supply port 6. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an outdoor terminal of an air supply system that is attached to an outdoor opening end in order to prevent intrusion of wind and rain from the outdoor opening end of the air supply system that opens to the wall surface of a building.

  The outdoor terminal of the air supply system that is attached to the outdoor opening end in order to prevent the entry of wind and rain from the outdoor opening end of the air supply system that opens on the wall of the building is fitted to the outdoor opening end of the air supply system. It consists of a connecting cylinder part to be mounted and a cover part covering the upper, front and side of the outdoor opening of the connecting cylinder part. The opening defined by the cover is a substantially outdoor opening of the air supply system. As shown in Japanese Patent Laid-Open No. 7-260221, rainwater enters the mounting cylinder from this portion. Some have a gallery to prevent intrusion of outside wind. Those equipped with a gallery have a high function of preventing the intrusion of wind and rain, but have a large ventilation resistance and a large pressure loss. Therefore, in order to reduce the pressure loss, the one disclosed in Patent Document 1 in which the outdoor opening is covered with a perforated curved plate in which a large number of holes are distributed almost uniformly on a thin convex curved surface has been developed. .

JP 2003-65575 A

  In many cases, a filter for collecting dust, insects and the like is provided in the air supply system in the middle of the path. However, it is difficult to maintain the filter because it is in the middle of the path, and if the filter is clogged, the pressure loss will increase, and even if the pressure loss of the outdoor terminal is small, appropriate ventilation (air supply) cannot be realized. . For these reasons, it has been proposed to install the filter in an outdoor terminal that is easy to maintain and manage. In the case of Patent Document 1, a curved hole fulfills the function of a filter and responds to this request. However, it has a function of collecting dust, minute insects, etc. in the substantial outdoor opening of the air supply system. If it is held, dust and minute insects will adhere to the filter at a relatively small area at an early stage, and the flow speed will increase, so that the insects will not be able to move away from the filter and must be cleaned frequently. .

  The present invention has been made to solve the above-described conventional problems, and its purpose is not only to prevent the entry of wind and rain, but also to an outdoor terminal that is easy to maintain and manage a filter that collects dust, minute insects, and the like. It is to obtain an outdoor terminal of an air supply system in which the filter is hardly clogged and the increase in pressure loss is small, and an outdoor terminal of an air supply system that is easy to maintain and manage the filter is obtained. .

  In order to achieve the above-mentioned object, the present invention supplies the lower surface covering the upper, front, and side of the outdoor opening of the connecting tube portion that is connected to the outdoor opening end that opens to the outer wall of the building. The outdoor terminal of the air supply system with a hood that is opened downward as a mouth has a ventilation surface that covers the front, side, and bottom surfaces that is sufficiently wider than the opening area of the intake port of the hood. Adopting a means to connect the air inlet with a shape-retaining filter that prevents the passage of various substances.

  According to the present invention, since the filter has a shape retaining property and has a ventilation surface extending from the front surface, the side surface, and the lower surface that is sufficiently wider than the opening area of the air supply port of the hood, the entire surface of the ventilation surface is clogged with minute substances. In fact, there is little increase in pressure loss, and since the flow rate does not increase, the attachment of insects and the like is reduced.

  The present invention relates to an outdoor terminal of an air supply system for preventing intrusion of wind and rain from an outdoor opening end of an air supply system constituted by a duct pipe or the like that opens on a wall surface of a building. This outdoor terminal has a connecting cylinder part fitted and attached to an outdoor opening end of an air supply system constituted by a duct pipe, and a lower surface covering the upper, front and side of the outdoor opening part of the connecting cylinder part. It is equipped with a hood that opens downward as an air supply port. The connecting cylinder part is configured as a metal or plastic cylinder having a flange projecting in the radial direction at one end, and is fitted and mounted in a duct pipe.

  The hood is configured as a single roof to cover the outdoor opening of the connection cylinder as a sheet metal or plastic molding, and is detachably fitted to the bottom of the flange of the connection cylinder, leaving a flat part extending forward It is installed. A filter is connected to the air supply port on the lower surface of the hood. The filter has a mesh structure with a shape retention of 0.3 to 0.7 mm square, and is formed in accordance with the outer shape of the hood. It covers except. This filter has a ventilation surface that extends to the front, side, and lower surface that is sufficiently larger than the opening area of the air supply opening of the hood (the projected flat area toward the wall surface is substantially the same as that of the hood). Block the passage of.

  The supply air passes through the wide ventilation surface of the filter, and the outside air flows from the supply port of the hood to the connecting tube portion, and ventilation by the supply air is performed through the duct pipe. Intrusion of wind and rain from the outdoor opening end of the air supply system is blocked by the hood, and dust and minute insects are captured by the filter. The filter has a large area, and even if dust or small insects adhere to the filter, the outside air can be sufficiently taken in from other parts, so the pressure loss does not increase and the flow rate does not increase, so insects etc. Does not stay away from the ventilation surface of the filter. Therefore, appropriate air supply can be realized without frequent cleaning. Since the filter is lightly soiled, the hood and the outer shape of the filter are combined, so that the water flowing down the hood is cleaned by washing the ventilation surface of the filter. When the dirt is severe, the filter can be washed away using a hose even at a high place. In this case, the filter retains its shape and does not distort or deform due to the force of water.

Embodiment 1 FIG.
1 is a side sectional view showing an outdoor terminal of an air supply system according to the present embodiment, FIG. 2 is a front view showing the outdoor terminal of the air supply system, and FIG. 3 is an enlarged configuration diagram showing the configuration of a filter. It is.

  This embodiment is an outdoor terminal of an air supply system for preventing intrusion of wind and rain from the outdoor opening end 3 of the air supply system constituted by a duct pipe 2 or the like that opens on a wall surface 1 of a building. The outdoor terminal includes a connecting cylinder portion 4 fitted and attached to an outdoor side opening end 3 of an air supply system constituted by a duct pipe 2, and an upper side, a front side, and a side side of the outdoor side opening portion 5 of the connecting cylinder portion 4. A hood 7 is provided which covers both sides and opens downward with the lower surface as an air supply port 6 (see FIG. 1). The connection cylinder part 4 is configured as a metal or plastic cylinder having a flange projecting in the radial direction at one end, and a spring (provided on the body part with the flange on the wall surface side at the outdoor opening end 3 of the air supply system) (Not shown) and fitted into the duct tube 2. In this flange, the flat surface portion 8 extends widely in a forward hanging manner below the connecting tube portion 4, and the draining plate portion 9 protrudes obliquely forward at the lower edge so as to be separated from the wall surface 1.

  The hood 7 is configured in a single roof shape that covers the outdoor opening 5 of the connection tube portion 4 as a sheet metal or a plastic molding, and leaves a flat surface portion 8 that extends in a front hanging shape below the flange of the connection tube portion 4. And is detachably fitted. A filter 10 is connected to the air supply port 6 on the lower surface of the hood 7. The filter 10 has a structure in which a 0.3-0.7 mm square mesh having shape retention as shown in FIG. 3 is stretched on the filter frame 11 and is formed in accordance with the outer shape of the hood 7. The flat surface portion 8 extending in a forward hanging manner below the cover 4 is covered except for the draining plate portion 9. As shown in FIG. 2, the hood 7 and the filter 10 have a ship bottom shape as a whole. This filter 10 has a series of ventilation surfaces 12 extending from the front surface, side surface, and bottom surface that are sufficiently larger than the opening area of the air supply port 6 of the hood 7 (the projected plane area toward the wall surface is substantially the same as that of the hood). The passage of minute substances on the ventilation surface 12 is blocked.

  Air is passed through the ventilation surface 12 of the filter 10 having a sufficiently larger area than the air supply port 6 due to supply air, and outside air flows from the air supply port 6 of the hood 7 to the connecting tube portion 4, and ventilation by the supply air is performed through the duct pipe 2. Done. Intrusion of wind and rain from the outdoor opening end 3 of the air supply system is blocked by the hood 7 covering the air and dust and minute insects are captured by the filter 10. Since the filter 10 has a large area, even if dust or minute insects adhere to the filter 10, the outside air can be sufficiently taken in from other parts that do not adhere, so the pressure loss does not increase and the flow rate does not increase. In addition, insects and the like cannot be separated from the ventilation surface 12 of the filter 10. Therefore, an appropriate air supply amount can be ensured without frequent cleaning. The light dirt on the filter 10 has the same shape as the hood 7, so that the water flowing down the hood 7 is cleaned by washing the ventilation surface 12 of the filter 10. When the dirt is severe, the filter 10 can be washed away using a hose or the like even at a high place. In this case, the filter 10 has shape retention and is not distorted or deformed by the force of water. In addition, when water is applied to the ventilation surface 12 from one side, dirt adhering to the other ventilation surface 12 is blown away from the ventilation surface 12, which is suitable for cleaning.

  Even if the outer shape of the filter 10 is not formed in accordance with the outer shape of the hood 7, the ventilation surface 12 of the filter 10 is formed in a direction away from the outdoor opening 5 of the connecting tube portion 4 or the filter 10 is formed. The same effect can be obtained by extending the hood 7 below the air inlet 6 for a long time. By subjecting the surfaces of the hood 7 and the filter 10 to photocatalytic treatment that develops remarkable hydrophilicity in response to ultraviolet rays, self-cleaning using rainwater or the like is also possible. Titanium oxide is suitable as a photocatalyst, and a thin water film is formed on the surfaces of the hood 7 and the filter 10 almost uniformly, so that the water washing effect is good.

It is side sectional drawing which shows the outdoor terminal device of an air supply system. (Embodiment 1) It is a front view which shows the outdoor terminal device of an air supply system. (Embodiment 1) It is an enlarged block diagram which shows the structure of a filter. (Embodiment 1)

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Wall surface, 4 Connection cylinder part, 5 Outdoor side opening part, 6 Air supply opening, 7 Hood | hood, 10 Filter, 12 Ventilation surface.

Claims (6)

  Provided with a hood that covers the upper, front, and side of the outdoor opening of the connecting tube portion that is connected to the outdoor opening end that opens on the outer wall of the building, and that opens downward with the lower surface as the air supply port. An outdoor terminal of an air supply system, which has a ventilation surface that covers a front surface, a side surface, and a lower surface that is sufficiently wider than the opening area of the air supply port of the hood, and that prevents passage of minute substances on the ventilation surface. An outdoor terminal of an air supply system in which a filter having shape is connected to the air supply port.   2. The outdoor terminal of an air supply system according to claim 1, wherein the ventilation surface of the filter is formed in a direction away from the outdoor opening of the connection cylinder portion.   The outdoor terminal of an air supply system according to claim 1, wherein the external shape of the filter is formed by matching the outer shape of the filter with the outer shape of the hood.   The outdoor terminal of the air supply system according to any one of claims 1 to 3, wherein a surface of the hood and the filter is subjected to a photocatalytic treatment that exhibits hydrophilicity.   The outdoor terminal of the air supply system according to any one of claims 1 to 4, wherein the filter has a 0.3 to 0.7 mm square mesh structure.   The outdoor terminal of the air supply system according to any one of claims 1 to 5, wherein the filter is extended long below the air supply port of the hood.

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