JPH0415856Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field of the invention) This invention relates to an outside air intake structure for ventilation of buildings.
In particular, it relates to an outside air intake structure for ventilation by attaching a ventilation pipe to the roof and introducing air into a naturally ventilated building.

(Prior Art) When naturally ventilating a building covering a large space, a plurality of ventilators or ventilation tubes are installed on the roof, while a plurality of openings are provided in the lower part of the building.
Atmospheric air is taken into the building through the openings by utilizing the upward current of air that occurs within the building based on the difference in specific gravity of the air between the upper and lower parts of the building. When machines, devices, etc. that generate noise are placed in a building, the vicinity of the openings is formed into a sound-absorbing structure in order to prevent or suppress the noise from leaking to the outside of the building through the openings.

A conventional sound absorbing structure is shown in FIG. 4. That is, a baffle plate 14 having a sound absorbing material is arranged opposite to the opening 12 of the building 10, and a sound absorbing chamber 1 surrounding the opening 12 is arranged.
6 forms a sound absorption chamber 16 in a vertical section so as to bypass the baffle plate 14, and the noise generated within the building 10 is brought into contact with a wide area of the baffle plate 14 and the sound absorption chamber 16, thereby increasing the sound absorption effect. It is configured as follows.

(Problems to be Solved by the Invention) The sound absorbing structure exhibits a certain sound absorbing effect. On the other hand, when a temperature difference occurs within the building 10, the atmosphere passes through the openings 12 and reaches the baffle plate 14.
Since this baffle plate 14 stands upright from the floor 18, the air is bent into an inverted U-shape along the baffle plate 14, and is taken into the building 10 through the sound-absorbing chamber 16. Therefore, the resistance when air passes through the sound absorbing structure increases, reducing the amount of air taken into the building 10, resulting in poor ventilation efficiency of the building.

In addition, although it is not directly related to ventilation efficiency,
Dust easily accumulates between the opening 12 and the baffle plate 14, and this dust cannot be disposed of unless the louver 20 disposed in the opening 12 is removed.

Therefore, an object of the present invention is to provide an outside air intake structure for ventilation that has low ventilation resistance and facilitates cleaning of dirt.

(Means for Solving the Problem) The outside air intake structure for ventilation according to the present invention includes an opening provided in a wall of a building, and a space arranged inside the building surrounding the periphery of the opening and communicating with the opening. a frame body forming a building, the frame body having a sound absorbing material on the side facing the space; and a member for shielding an end of the frame body facing inward of the building with a space left above the frame body, the frame body having a sound absorbing material on the side facing the space; It includes a first member having a sound absorbing material on the side facing the space, and a second member having the sound absorbing material and being a member disposed in the space at a distance vertically from the frame body. The first member is pivotally connected to the frame at its upper end and can be opened and closed about a horizontal axis.

(Example) Examples of the present invention will be described below with reference to the drawings.

The outside air intake structure 30 for ventilation is shown in Figures 1 to 3.
As shown in the figure, the lower part of the wall 34 of the building 32 is provided with a plurality of openings 36, while the roof 38 of the building is provided with a plurality of ventilation tubes 40, which are known per se.
It is mainly used when naturally ventilating the interior of the room.

The ventilation outside air intake structure 30 includes a frame body 42 and a first
a member 44 and a second member 46, the opening 3
6. The size of the opening 36 is determined by taking into account the size of the building 32, the presence or absence of a heat source disposed within the building 32, the number of ventilation outside air intake structures 30, and the like. A louver 37 having a shape known per se is attached to the opening 36.

The frame body 42 is arranged inside the building 32 and surrounds the periphery of the opening 36, and the frame body 42 is arranged in the space 4 communicating with the opening 36.
form 3. In the illustrated example, the frame body 42 is
6 and the opening 36
A horizontal member 50 disposed below and above the floor 33
and a pair of vertical members 52 and 54 arranged on the left and right sides of the opening, each member having a sound absorbing material 56 on the side facing the space 43, and a metal plate 57 such as an iron plate on the outside of the sound absorbing material 56. It is formed by. Horizontal member 48 is attached to wall 34 and horizontal member 50
is attached to the floor 33.

In manufacturing each member, first, a metal plate 57 is formed into a predetermined shape, and then a hexagonal wire mesh or the like is pasted on the side facing the space of this predetermined shape, and a fibrous sound-absorbing material 56 is sprayed to form a sound-absorbing layer. Form. The end of each metal plate 57 is folded back toward the side where the sound absorbing material 56 is provided.

The folded portions 58 at the left and right ends of the opening 36 of the pair of horizontal members 48 and 50 have a plurality of holes 59,
On the other hand, a plurality of holes 60 are formed in the portions of the pair of vertical members 52 and 54 facing the folded portions 58, and bolts passed through these holes and nuts screwed into the bolts allow each vertical member 52,
54 is attached to and detached from the pair of horizontal parts 48 and 50. This makes it easy to manufacture the frame 42 and assemble it around the opening 36. In the illustrated example, a member 62 is connected to the pair of horizontal members 48 and 50 and extends vertically and contacts the wall portions of the building on the left and right sides of the opening 36, and the folded portion 63 of this member 62 is also connected to a bolt. A hole 64 is drilled therein, and a hole 65 is also drilled in the pair of vertical members 52, 54 at a portion opposite to the hole 64, through which a bolt is passed.

The first member 44 shields the end of the frame 42 that is inward of the building 32 by leaving a gap 66 above. This member 44 has a sound absorbing material 68 on the side facing the space 43, and a metal plate 68 behind the sound absorbing material 68.
Equipped with 9. The metal plate 69 and the sound absorbing material 68 are formed in the same manner as each member of the frame.

In the illustrated example, the left and right folded portions 70 of the member 44
A hole 71 is drilled at the upper end, and a hole 72 is drilled in a pair of vertical members 52 and 54 at a portion opposite to the hole 71, and a pin is passed through both holes, so that the member 44 can be opened and closed. ing. By opening this member 44 upward, the inside of the frame 42 can be easily cleaned. A handle 74 is provided on the member 44.

The second member 46 is disposed in the space 43 at a distance from the frame body 42 in the vertical direction, and has passages 76 and 7 in the vertical direction.
form 7. This member 46 includes a sound absorbing material 78 and a metal plate 79 having the same configuration as described above.
The left and right folded portions 80 of this member 46 have a plurality of holes 8
1, and on the other hand, the pair of vertical members 52, 54 have a hole 82 provided at a portion opposite to this hole,
The member 46 is fixed to the frame 42 with bolts and nuts passing through these holes.

In the illustrated example, the member 46 has a first portion 84 extending vertically, a second portion 85 extending horizontally into the building from the middle of the first portion 84, and a second portion 85 extending vertically from an end of the second portion. and an extending third portion 86. According to this configuration, the second and third portions 8
5 and 86, the sound absorption area can be increased and the sound absorption effect can be enhanced.

(Operation of the embodiment) The ventilation outside air intake structure 30 is used by being attached to a required location of the building 32. Then, building 32
Building 3 due to the difference in specific gravity of the air between the upper and lower parts of the building
An upward air current is generated in the air 2, and the atmosphere passes through the louver 37 of the opening 36 and enters the space 43 surrounded by the frame 42. In this space 43, the second member 46 is located at a distance from the upper and lower horizontal members 48, 50 of the frame body, and the upper and lower passages 76, 77 are provided, so that air resistance is reduced. The amount of air passing through the opening 36 increases. In this case, the presence of a turbine, blast furnace, or other heat generating source 88 within the building 32 increases the updraft velocity within the building 32, which induces greater ventilation.

(Effects of the invention) According to the invention, air passages are provided in the upper and lower parts of the frame, and the air does not turn over in an inverted U-shape, so that ventilation resistance is reduced. This increases the amount of air taken in and improves the ventilation efficiency of the building.

Additionally, the inside of the frame is easy to clean.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the outside air intake structure for ventilation according to the present invention, Fig. 2 is a perspective view of the members constituting the outside air intake structure for ventilation, showing a pair of vertical members separated, and Fig. 3 FIG. 4 is a sectional view schematically showing a building in which a ventilation outside air intake structure is installed, and FIG. 4 is a sectional view of a conventional ventilation outside air intake structure. 30... Outside air intake structure for ventilation, 32... Building, 34... Wall, 36... Opening, 42... Frame,
43... Space, 44... First member, 46... Second member.

Claims (1)

[Claims for Utility Model Registration] (1) An opening provided in a wall of a building, and a frame arranged inside the building surrounding the periphery of the opening to form a space communicating with the opening. a frame body having a sound-absorbing material on the side facing the space; and a member for shielding an end of the frame body that is inward of the building with a space above, and having a sound-absorbing material on the side facing the space. a first member having a sound absorbing material, and a second member disposed in the space at an interval from the frame body up and down and having a sound absorbing material, the first member having a sound absorbing material at an upper end thereof. An outside air intake structure for ventilation of a building, which is pivotally attached to the frame and can be opened and closed around a horizontal axis. (2) The second member includes a first portion extending vertically, a second portion extending horizontally from the middle of the first portion toward the inside of the building, and an end of the second portion. and a third portion extending perpendicularly from the outside air intake structure for ventilation of a building according to claim (1) of the utility model registration. (3) The frame includes a pair of horizontal members spaced apart from each other vertically, and a pair of vertical members spaced from side to side, and each vertical member is connected to the horizontal part of the pair. The outside air intake structure for ventilation of a building as set forth in claim (1) of the utility model registration claim, which is detachable from a member.