JP2005241174A - Air supply and discharge hood - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air supply and discharge hood which can satisfactory exercise water stopping ability while securing large air capacity which is not affected by external wind pressure as it is not exposed to an outer wall face of a building and does not damage external view of the building and can facilitate effective use of an indoor space by reducing protrusion to an indoor side. <P>SOLUTION: An air supply and discharge port 2 is formed on a back face side of a duct in a chamber 1 shape and the duct is installed in the building so that the air supply and discharge port 2 opens to outdoor. An air supply and discharge port 3 opening indoor is formed above the duct and a bottom plate 8 of the duct is formed at a tilting plate which has a downward slope to outdoor side. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a large supply / exhaust hood installed in, for example, a warehouse or a factory.

  Supply and exhaust hoods installed in warehouses and factories are required to have a large air volume and water-stopping performance (rainwater intrusion prevention function). There is a supply / exhaust vent cap installed in a vent duct (see, for example, Patent Document 1).

  This vent cap is provided with a cylindrical pipe guide on the back side of the base plate, and the front side is surrounded by a front hood having an opening at the top and bottom. Installed in the lower part is a top rainproof plate with rain gutter-shaped rainproof plates arranged in multiple tiers. An outside air opening window is formed in the part, and a side rainproof plate is provided on the inside.

  In the installed state of the vent cap, the pipe guide is fitted into the opening of the outer wall feed / exhaust duct penetrating the outer wall, and the vent cap protrudes outside the outer wall.

  In addition, as another conventional example, it is assumed that rainwater is not taken indoors, and a curved flow path that guides outside air taken downward from an opening opening outdoors is further formed, and the curved flow path is formed in the curved flow path. There is a structure of a ventilation opening of a building in which a draining plate having a posture substantially along the flow of air is attached and a drainage channel is provided at the lower part of the curved flow path (for example, see Patent Document 2).

This is because the opening that opens to the outside has a projecting wall with a square hole in the side wall of the building and a bent plate on the inside so as to cover the lower part from below. Outside air is taken in from the opening.
JP 2002-243230 A JP-A-7-110152

  The vent cap described in JP-A-2002-243230 has a water stop function, but is mainly assumed to be installed in a building such as a house or an office. Large air volume cannot be secured when installed in a factory.

  Further, the structure described in Japanese Patent Application Laid-Open No. 7-110152 has a complicated structure such as forming a curved flow path as a water stop structure and installing a draining plate therein.

  Furthermore, since both are installed on the outdoor side of the building, in high-rise buildings and areas with strong winds, it is not possible to cope with wind pressure during storms, making it difficult to install the hood and exposing the hood to the outer wall surface. Doing so may damage the aesthetics of the building.

  The object of the present invention is to solve the inconvenience of the conventional example, can satisfy the water stop performance while ensuring a large air volume, is not exposed to the outer wall surface of the building and is not affected by the external wind pressure, An object of the present invention is to provide an air supply / exhaust hood that does not impair the aesthetics of the building and that can effectively utilize the indoor space with less protrusion to the indoor side.

  The present invention eliminates the disadvantages of the conventional example, and the invention according to claim 1 is characterized in that an air supply / exhaust port is formed on the back side of the chamber-shaped duct, and the air supply / exhaust port is opened to the outside. The gist is to install the duct indoors.

  According to the first aspect of the present invention, since the duct is formed in a chamber shape, a large air volume can be secured, which is effective when installed in a warehouse or a factory. In addition, since the duct is installed on the indoor side, it is not directly subjected to wind pressure as in the case of installing outside the outer wall, and it can cope with a storm even if it is installed in a high-rise building or a strong wind area. Furthermore, since the duct does not protrude outside the building, the aesthetic appearance of the building is not impaired.

  The gist of the invention described in claim 2 is that the air supply / exhaust opening that opens indoors is formed in the upper part of the duct, and the bottom plate of the duct is formed in an inclined plate that is inclined downward toward the outdoor side. .

  According to the second aspect of the present invention, since the air supply / exhaust opening that opens indoors is formed in the upper part of the duct, the rainwater that has entered from the air supply / exhaust opening that opens to the outdoor side hits the plate on the front side of the hood. It falls to the lower part, flows along the inclination of the bottom plate, and is surely discharged from a drain outlet provided as appropriate. Therefore, it is possible to prevent rainwater from entering the indoor side through the indoor air supply / exhaust port.

  The gist of the invention described in claim 3 is that the fan is disposed in the upper part of the duct so as to be positioned below the air supply / exhaust opening that opens indoors.

  According to the third aspect of the present invention, as compared with the conventional arrangement in which the fan is disposed on the outdoor opening side, it is possible to reduce the projecting length to the indoor side by using the upper portion, thereby reducing the indoor effective space. Largely secured.

  The air supply / exhaust hood of the present invention can satisfy the water stoppage performance by providing an opening on the indoor side while securing a large air volume by adopting a duct chamber type, and is installed inside a building. It is not exposed to the outer wall of the building, is not affected by external wind pressure, can respond well to storms in high-rise buildings and strong wind areas, does not impair the aesthetics of the building, and protrudes to the indoor side It can be used effectively for indoor spaces and is effective when installed in warehouses and factories.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a side view showing an embodiment of an air supply / exhaust hood according to the present invention, FIG. 2 is a front view of the same, FIG. 3 is a longitudinal side view of the chamber, which is a main part of the same, and the air supply / exhaust hood of the present invention is a factory or warehouse It is assumed that it is installed in

  In the figure, reference numeral 1 denotes a chamber which is a duct. As shown in FIG. 3, the chamber 1 has an air supply / exhaust port 2 which opens outdoors on the back side, and an air supply / exhaust port 3 which opens indoors on the upper side. Formed horizontally.

  As shown in FIGS. 1 and 2, a filter unit 4, an electric shutter 5, and a fan 6 can be sequentially disposed on the upper portion of the air supply / exhaust port 3 indoors as necessary.

  The air supply / exhaust port 2 to the outside can be formed in the shape of a louver as shown in the figure, or can be provided with a slit, a perforated panel or a metal mesh, or can be left open. Further, a bird net 9 is attached as necessary.

  The front surface side (indoor side) of the chamber 1, that is, the facing surface of the air supply / exhaust port 2 that opens outdoors is formed by a vertical plate 7, and the bottom plate 8 is formed by an inclined surface that is inclined downward toward the outdoor side. A drainage port (not shown) is provided at an appropriate position at the lowermost end.

  Next, the operation will be described. If the air supply / exhaust hood configured as described above is installed at the opening to the outside of the building, the air supply / exhaust port 2 opens toward the outside, and the chamber 1 is installed indoors. The outside air that has entered the chamber 1 from the outdoor air supply / exhaust port 2 by driving the fan 6 is supplied indoors from the indoor air supply / exhaust port 3. In this case, since the outside air is taken into the chamber 1, a large air volume can be secured.

  During storms, rainwater also enters the chamber 1 from the air supply / exhaust port 2, but the rainwater that enters the chamber 1 hits the indoor vertical plate 7 located on the opposite surface of the air supply / exhaust port 2 and travels through this. To the bottom plate 8 below. Since the bottom plate 8 is formed on an inclined surface, water flows toward the outdoor side along the inclination and is discharged from the drain port to the outside of the chamber 1. As a result, rainwater is prevented from entering the room 1 indoors, and the water stop function of the chamber 1 is exhibited.

  Further, since the chamber 1 is installed indoors, the chamber 1 is not directly subjected to wind pressure during a storm when it is installed in a high-rise building, a strong wind region, or the like, and its function is not impaired.

  And since the chamber 1 is not exposed to the outside of the building and only the air supply / exhaust port 2 is visible on the outer wall surface, the aesthetic appearance is not impaired.

  Even if the chamber 1 is installed indoors, the fan 6 is disposed at the top of the chamber 1 and is not an outdoor opening as in the prior art. Thereby, it is possible to prevent the indoor effective space when it is installed in a warehouse or a factory from being reduced.

  In the above-described embodiment, the bottom plate 8 is formed on a linear inclined surface. However, the present invention is not limited to this, and an arc-shaped gradient may be formed.

  Further, the arrangement position of the fan 6 is not limited to the form of being placed on the upper portion of the chamber 1 as described above, and either the left or right side surface of the chamber 1 at a position higher than the air supply / exhaust port 2; Or it can also be arranged on both sides.

  In addition, when installing on an inclined outer wall due to slanting restrictions, etc., it will be a chamber with the outdoor side inclined, and rainwater will more easily enter from the outdoor air supply / exhaust port. Because it is equipped with.

It is a side view which shows embodiment of the air supply / exhaust hood of this invention. It is a front view from the outdoor side which shows embodiment of the air supply / exhaust hood of this invention. It is a vertical side view of the chamber which is the principal part which shows embodiment of the air supply / exhaust hood of this invention.

Explanation of symbols

1 Chamber 2 Air supply / exhaust port 3 Air supply / exhaust port 4 Filter unit 5 Electric shutter 6 Fan 7 Vertical plate 8 Bottom plate
9 Birdproof net

Claims (3)

  An air supply / exhaust hood characterized in that an air supply / exhaust port is formed on the back side of a chamber-shaped duct, and the duct is installed indoors so that the air supply / exhaust port opens to the outside.   2. The air supply / exhaust hood according to claim 1, wherein an air supply / exhaust port that opens indoors is formed at an upper portion of the duct, and a bottom plate of the duct is formed as an inclined plate that is inclined downward toward the outdoor side.   The air supply / exhaust hood according to claim 1 or 2, wherein a fan is disposed in an upper part of the duct so as to be positioned below the air supply / exhaust opening that opens indoors.

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