JP4409051B2 - Wall ventilator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wall ventilator for performing ventilation between a room in a building and the outside.
[0002]
[Prior art]
A ventilation hole is formed in the wall of the building that partitions the living room such as a kitchen and the outside, and ventilation is performed through this ventilation hole. In general, a ventilator having a hood-type hollow casing is attached to the outer end of the vent hole. This casing has a shielding wall portion facing the ventilation hole, and is configured so that wind from the outside does not blow directly into the ventilation hole. An opening is formed at the lower end of the casing, and ventilation is performed through the lower end opening.
[0003]
[Problems to be solved by the invention]
In the above-mentioned wall ventilator, wind blows from the lower end opening of the casing during strong winds, passes through the interior space of the casing, enters the room through the ventilation holes in the building wall, and rainwater or snow blows into the room along with this wind. In some cases, it may adhere to a fan or a louvered ventilator provided at the inner end of the vent hole.
[0004]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a casing that is attached to an outer end of a vent hole in a wall that separates a living room of a building from the outside, and the casing covers the vent hole so as to face the outer end of the vent hole. A first flow path having a shielding wall portion and a lower end opening, wherein the internal space of the casing extends from the vent hole to the shielding wall portion, and a second flow from the first flow path toward the lower end opening along the shielding wall portion. Wall ventilators including roads,
In the casing, there is provided an overhang portion that projects from the building wall side toward the shielding wall portion at the boundary portion of the first flow channel and the second flow channel or the second flow channel. A restricting member that allows air to flow is arranged at substantially the same height as the protruding portion, and a flexible sheet is hung from the tip of the overhanging portion, and the restricting member is blown by the wind from the lower end opening of the casing. The flow of air in the casing is regulated by biasing to a position corresponding to.
[0005]
According to a second aspect of the present invention, in the wall ventilator according to the first aspect, the restriction member is a thin plate having a net or an air circulation part, and is arranged on the upper surface of the overhanging part so as to sandwich the upper end part of the sheet. It is fixed and it is extended toward the said shielding wall part, It is characterized by the above-mentioned.
According to a third aspect of the present invention, in the wall ventilator according to the first and second aspects, a part of the lower end opening of the casing is disposed directly below the overhanging portion.
[0006]
According to a fourth aspect of the present invention, in the wall ventilator of the first to third aspects, the casing is a hood having the shielding wall portion and a lower end opening, and a vertical connected to the building wall side of the hood. The support plate is formed with a communication port connected to the ventilation hole of the building wall, and the projecting portion is provided under the communication port.
According to a fifth aspect of the present invention, in the wall ventilator according to the first to third aspects, the casing includes a hood having the shielding wall portion and a lower end opening, and a cylindrical body inserted into the vent hole. A flange is formed on the outer peripheral edge of the cylindrical body, the hood is connected to an upper portion of the flange, and the projecting portion is provided at a lower portion of the flange.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a wall ventilator according to a first embodiment of the present invention will be described with reference to FIGS. In a building, a vent hole 2 is formed in a wall 1 that separates a living room such as a kitchen from the outside. The wall ventilator 3 of this embodiment is installed at the outer end of the vent hole 2. Although not shown, a fan, a movable louver type ventilation device, or the like is installed at the inner end of the vent hole 2.
[0008]
The wall ventilator 3 includes a casing 5. The casing 5 includes a cylindrical body 10, a support plate 20, and a hood 30. The cylindrical body 10 is inserted into the vent hole 2 from the outer end thereof, and a flange portion 11 is formed on the peripheral edge on the outdoor side. The support plate 20 is disposed vertically along the outer surface of the wall 1, has a communication port 21 at the upper portion, and has an inclined draining portion 22 at the lower end. The communication port 21 has the same diameter as the inner diameter of the cylindrical body 10, and the flange portion 11 of the cylindrical body 10 is connected to the peripheral edge of the communication port 21.
[0009]
The hood 30 has a shielding wall portion 31 that is disposed to face the outer end of the vent hole 2 and covers the vent hole 2. The shielding wall 31 extends downward from the vent hole 2. A flange 32 is formed on both side edges of the hood 30 and the upper edge of the arc shape, and the flange 32 is fixed to the outer surface of the wall 1 of the building via the support plate 20 and the packing 40. Yes. The packing 40 has a shape along the peripheral edge of the support plate 20, and seals between the support plate 20 and the outer surface of the wall 1.
[0010]
The casing 5 has a lower end opening 35 surrounded by the hood 30 and the support plate 20. The internal space of the casing 5 has a first flow path 36 that extends from the outer end of the vent hole 2 to the shielding wall 31 of the hood 30 and a second flow path 37 that reaches the lower end opening 35 along the shielding wall 31. is doing.
[0011]
The wall ventilator 3 includes a mold member 50, a net 60, and a flexible thin sheet 70. The mold member 50 has an L-shaped cross section and extends horizontally in a direction orthogonal to the paper surface in FIG. 1, a vertical portion 51 fixed to the support plate 20, and a horizontal portion 52 (extending from the vertical portion 51 toward the hood 30 ( Overhang portion). The horizontal portion 52 is at the same height as the lower end of the communication port 21 of the support plate 20 and is located at the boundary between the first flow path 36 and the second flow path 37 of the casing 5.
[0012]
The sheet 70 is made of, for example, a nylon (synthetic fiber) water-repellent cloth and has substantially the same shape as the mesh 60. On the upper surface of the horizontal portion 52 of the mold member 50, the end portion of the net 60 on the wall 1 side is fixed so as to sandwich the upper end portion of the sheet 70. The net 60 extends horizontally, and its peripheral edge is close to the inner peripheral surface of the hood 30. Thereby, the net 60 occupies almost the entire area of the flow cross section in the casing 5 in the vicinity of the horizontal portion 52. The sheet 70 hangs down from the front end edge of the horizontal portion 52 and is disposed in the second region 37 of the casing 30, and the lower edge portion thereof is folded in half. A part of the opening 35 is located directly below the horizontal portion 52 (the back side of the sheet 70).
[0013]
In the above configuration, when a ventilator with a movable louver is installed at the inner end of the vent hole 2, when the louver is open, the living room is located through the vent hole 2, the internal space of the casing 5, and the opening 35. Is ventilated. If the outside is a breeze or no wind, the seat 70 maintains a suspended state as shown by the solid line in FIG. 1 and does not hinder ventilation. In addition, when a fan is installed at the inner end of the vent hole 2, air is forced to flow from the living room side to the outside when the fan is operating. Because it follows the downward flow, it does not interfere.
[0014]
In the case of strong wind, wind blows from the opening 35. With this wind, the sheet 70 is blown up and biased in the direction of the arrow in FIG. As a result, the air flow in the casing 5 is substantially blocked by the seat 70, and strong wind can be prevented from being blown into the living room through the vent hole 2. Further, it is possible to prevent rainwater or snow from blowing into the vent hole 2 or adhering to the ventilator or the fan at the inner end of the vent hole 2 at the time of strong wind accompanied by rain or snow.
[0015]
In the present embodiment, since a part of the lower end opening 35 of the casing 5 extends just below the horizontal portion 52 of the mold member 50, the wind wraps around the back side of the sheet 70 in a strong wind, and the sheet 70 is surely directed to the net 60. You can make it. Further, the net 60 can prevent the sheet 70 from turning up above the horizontal portion 52, and can return to the original hanging state when the strong wind stops. Since the net 60 and the sheet 70 are attached to the horizontal portion 52 of the mold member 50 in a laminated state, the attaching operation is easy.
[0016]
In the embodiment described above, a comb-like thin plate 65 may be used as the restricting member instead of the net 60 as shown in FIG. The thin plate 65 has an air circulation portion 65a between a large number of comb portions. The thin plate 65 can also be used in other embodiments described later.
[0017]
Next, another embodiment of the present invention will be described. In these embodiments, components corresponding to those in the first embodiment are denoted by the same reference numerals in the drawings, and detailed description thereof is omitted. In the wall ventilator 3A of the second embodiment shown in FIGS. 3 and 4, the casing 5A does not have a member corresponding to the support plate 20 of the first embodiment. The flange portion 11 of the cylindrical body 10 is fixed to the outer surface of the wall 1 of the building via a circular ring-shaped packing 45. Moreover, the collar part 32 located on the upper edge of the hood 30 is fixed to the wall 1 so as to overlap with the collar part 11 on the upper side of the cylindrical body 10, and the collar parts 32 located on both side edges of the hood 30 are directly connected to the wall. 1 is fixed. The lower end opening 35 of the casing 5 </ b> A is formed by the hood 30 and the outer surface of the wall 1. Further, the vertical portion 51 of the mold member 50 that supports the net 60 and the sheet 70 is fixed to the lower flange portion 11 of the cylindrical body 11. The second embodiment has a simple configuration because there is no support plate. However, the operation of the sheet 70 is the same as that of the first embodiment, and a description thereof will be omitted.
[0018]
In the wall ventilator 3B of the third embodiment shown in FIG. 5, the casing 5B is configured by the support plate 90 perpendicular to the hood 80, and does not include the cylindrical body 10 of the first embodiment, and is simplified. It has a structured. The hood 80 has a shielding wall portion 81, a bottom wall portion 82, and a flange portion 83. The shielding wall 81 faces the ventilation hole 2 and is approximately the same size as the ventilation hole 2. In the bottom wall portion 82, a large number of slits 82a and a plurality of small holes 82b located on the wall 1 side from the slits 82a are formed. These slits 82a and small holes 82b are provided as lower end openings of the casing 5B. The collar 83 of the hood 80 is directly fixed to the backing 1 a of the wall 1 and is covered with the exterior material 1 b of the wall 1.
[0019]
The support plate 90 is fixed to the peripheral edge of the rear end of the hood 80, a communication port 91 connected to the vent hole 2 is formed at an upper portion thereof, and a lower side thereof toward the shielding wall portion 81 of the hood portion 80. An overhanging portion 92 is formed integrally. The overhang portion 92 extends horizontally in a direction orthogonal to the paper surface of FIG. 5 and is disposed above the bottom wall portion 82. On the slightly inclined upper surface of the overhang portion 92, the net 60 is fixed so as to sandwich the sheet 70 therebetween.
[0020]
The internal space of the casing 5B includes a first flow path 36B extending from the ventilation hole 2 to the shielding wall 81 of the hood 80 through the communication port 91 of the support plate 90, and a slit 82a and a small hole 82b along the shielding wall 81. And a second flow path 37B. The overhang portion 92 is disposed at the upper part of the second flow path 37B, and the net 60 and the sheet 70 are also disposed in the second flow path 37B.
[0021]
The operation of the sheet 70 of this embodiment is the same as that of the first embodiment. A small hole 82b is disposed directly below the tip of the overhanging portion 92, and in a strong wind, the wind enters the back side of the sheet 70 through the small hole 82b and promotes the deviation of the sheet 70 in the direction of the mesh 60. It has become.
[0022]
The present invention is not limited to the above-described embodiments, and various aspects are possible. The sheet may be not only a synthetic fiber cloth, but also a synthetic resin film, a non-woven fabric, or the like.
[0023]
【The invention's effect】
As described above, according to the first aspect of the present invention, in the case of strong wind, the sheet is blown up by the wind blown from the lower end opening of the casing and biased to the position where it hits the regulating member, and the air in the casing is Since distribution is restricted, it is possible to prevent strong winds from blowing into the living room through the ventilation holes. In addition, during strong winds with rain and snow, it is possible to prevent the rain and snow from blowing into the living room through the ventilation holes and adhering to the ventilation device and the fan at the inner end of the ventilation holes. Since the sheet is prevented from being turned up by the restricting member, it can surely return to the original hanging state when the strong wind stops. Further, since this sheet is flexible, no noise is generated even when it hits the regulating member. During normal ventilation, the seat is in a suspended state and does not hinder a substantially vertical flow of air in the second flow path. In addition, the structure for obtaining the above-described effects is simple because only the overhanging portion, the regulating member, and the sheet are used, and is inexpensive.
[0024]
According to the second aspect of the present invention, the regulating member is made of a net or a thin plate, and can be easily fixed to the overhanging portion together with the sheet.
According to the third aspect of the present invention, the wind from the opening enters the back side of the sheet, and the sheet can be reliably biased toward the regulating member.
According to the 4th aspect of this invention, an overhang | projection part can be easily provided by using a support plate.
According to the fifth aspect of the present invention, the casing is configured by the hood and the cylinder, and the overhanging portion is provided on the cylinder, so that the structure can be simplified.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a ventilation device according to a first embodiment of the present invention mounted on a wall.
FIG. 2 is an exploded perspective view of the ventilation device of the first embodiment.
FIG. 3 is a longitudinal sectional view showing a ventilation device according to a second embodiment of the present invention mounted on a wall.
FIG. 4 is an exploded perspective view of the ventilation device of the second embodiment.
FIG. 5 is a longitudinal sectional view showing a ventilation device according to a third embodiment of the present invention mounted on a wall.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Building wall 2 Ventilation hole 3, 3A, 3B Ventilation device 5, 5A, 5B Casing 10 Tubular body 11 Gutter part 20 Support plate 21 Communication port 31 Shielding wall part 35 Lower end opening 36, 36B 1st flow path 37, 37B
52 Horizontal part (overhang part)
60 mesh (regulatory member)
65 Comb-like thin plate (regulating member)
65a Air circulation part 70 Sheet 81 Shielding wall part 82a Slit (lower end opening)
82b Small hole (lower end opening)
90 support plate 91 communication port 92 overhang part

Claims (5)

A casing that is attached to the outer end of the ventilation hole of the wall that separates the living room of the building from the outside, and the casing has a shielding wall portion that covers the ventilation hole facing the outer end of the ventilation hole, and a lower end opening. A wall ventilator including a first flow path in which an internal space of the casing extends from the vent hole to the shielding wall and a second flow path from the first flow path toward the lower end opening along the shielding wall. ,
In the casing, there is provided an overhang portion that projects from the building wall side toward the shielding wall portion at the boundary portion of the first flow channel and the second flow channel or the second flow channel. A restricting member that allows air to flow is arranged at substantially the same height as the protruding portion, and a flexible sheet is hung from the tip of the overhanging portion, and the restricting member is blown by the wind from the lower end opening of the casing. A wall ventilator that regulates the flow of air in the casing by biasing it to the position where it hits. The regulating member is a thin plate having a net or an air circulation part, is fixed to the upper surface of the overhanging part so as to sandwich the upper end part of the sheet, and extends toward the shielding wall part. The wall ventilator according to claim 1. The wall ventilator according to claim 1 or 2, wherein a part of a lower end opening of the casing is disposed directly under the overhanging portion. The casing includes a hood having the shielding wall portion and a lower end opening, and a vertical support plate connected to the building wall side of the hood, and the support plate communicates with the ventilation hole of the building wall. The wall ventilator according to any one of claims 1 to 3, wherein a mouth is formed and the projecting portion is provided under the communication port. The casing includes a hood having the shielding wall portion and a lower end opening, and a cylindrical body inserted into the ventilation hole, and a flange is formed on an outer periphery of the cylindrical body, and the upper portion of the flange is The hood is connected, The said overhang | projection part is provided in the lower part of the collar part, The ventilation apparatus for walls in any one of Claims 1-3 characterized by the above-mentioned.

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