JPH045898B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a waterproof louver that is attached to a vent or ventilation opening of a building, etc., and particularly to a waterproof louver that has sound insulating properties.

[Conventional technology]

Conventionally, a horizontal waterproof louver 20 as shown in FIG. 5(a) has been common as a waterproof louver installed in a vent or ventilation opening of a building. This horizontal waterproof louver has slats 21 extending horizontally arranged and fixed at predetermined intervals above and below within a support frame (not shown), so that vertically adjacent slats 21 communicate indoors and outdoors. air passage 22
are divided.

[Problem to be solved by the invention]

In this type of waterproof louver, rainwater that blows into the ventilation openings or vents is captured by the slats 21, but the rainwater that is captured by each slat 21 becomes raindrops and is transferred to the slats. Since it falls from 21,
The raindrops collide with the lower blade plate 21 and are scattered, and the scattered raindrops enter the air passage 22 and reach indoors, or the raindrops are blown into the air passage 22 by the wind and collide with the blade 21 inside the air passage 22. If you try to ensure sufficient ventilation,
There is a problem of reduced waterproofness, and this problem is particularly noticeable in large ones used in commercial and industrial buildings, such as power plants.

In addition, in the vertical waterproof louver 30A (31A is an air passage) as shown in FIG. There was no problem, but the problem was that the shape of the vane would have to be complicated to improve the waterproof performance.

In addition, in the above-mentioned commercial/industrial buildings (power plant main building, attached machinery room, etc.), we want not only ventilation and waterproofness, but also noise isolation, but the conventional louvers are also of the horizontal type mentioned above, for example. The vertical louver 30A having the vane plate 31 shown in FIG. 5(b) also has a poor sound insulation effect, and in particular, there has been a strong desire in the industrial world to develop a louver with sufficient sound insulation performance, ventilation performance, and waterproof performance.

This invention was made to solve the above-mentioned conventional problems, and an object thereof is to provide a sound insulation/waterproof louver that can have sufficient sound insulation performance, ventilation performance, and waterproof performance.

[Means to solve the problem]

In order to achieve the above object, the present invention uses a vertical blade structure having three sides for the blades arranged in the frame, and two sides that define an air passage communicating indoors and outdoors in the frame are made of sound absorbing plates. However, when viewed from the front and back direction of the louver, the front and rear opposing ridges of adjacent blade structures are arranged so as to overlap.

[Effect]

In this invention, the air passage communicating indoors and outdoors is
Since it is formed of a sound absorbing plate, noise that attempts to propagate through the air passage is attenuated by this sound absorbing plate. In addition, since the vertical blade structure is used, the collected rainwater flows down the surface of the blade structure and is drained away, and unlike horizontal louvers, it does not scatter during the fall. There is an advantage that these effects can be obtained using a simple vertical blade structure having three sides.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 3, reference numeral 1 indicates the entire sound-insulating/waterproof louver, and in this embodiment, an example is shown in which two sets of louvers are used for a ventilation opening (not shown) in two stages, front and rear. 2 is a support frame; 3;
3, 3 are blade structures, 3R, 3L are blade structure halves, which are arranged at a predetermined interval L in the left-right direction of the support frame 2, and are fixed to the upper and lower frames of the support frame 2 at the upper and lower portions (not shown). Fixed by means. In addition,
In this embodiment, the blade structure halves 3R and 3L at the left and right ends are vertically divided bodies of the blade structure 3. The blade structure 3 is an equilateral triangular or two-sided structure in which one side is a sound insulating plate 3A fixed to the blade structure frame 4, and the other two sides (equal sides) are closed by sound absorption plates 3B fixed to the blade structure frame 4.
The blade structure 3 is an equilateral triangular cylinder and is adjacent to each other.
One sound insulation board 3A faces the front side (outdoor side) of the support frame 2, the other sound insulation board 3A faces the rear side (indoor side) of the support frame 2, and the sound absorption board 3B faces the opposite sound absorption board 3B. They are arranged parallel to each other with an air passage (a space with a predetermined distance L, for example, L=140 mm) 5 between them. Reference numeral 7 denotes a vertically elongated water return member, which partitions an air passage 5 in the support frame 2 and is attached along one indoor end of the opposing blade structure 3 or blade structure half 3L or 3R. ing. 8 is a current plate. Note that the predetermined interval L is set so that when the louver 1 is viewed from the front and rear directions, the front and rear cannot be seen through, that is, the ridges of adjacent blade structures 3 are located on the same line when viewed from the front and rear directions, or Alternatively, the sizes are selected so that they overlap.

Louver 1 on the outdoor side (front stage) and indoor side (back stage)
The louver 1 means the blade structure 3, the blade structure half 3
The L and 3R sound insulation plates 3A face each other in the front and back, and the narrow ridges of the sound absorption boards 3B face each other in the front and back. is formed.

In this configuration, when rainwater blows from the direction of the arrow shown in the figure, most of the rainwater hits the air inlet portion of the sound insulation board 3A facing the outdoor side of the blade structure 3 and the sound absorption board 3B that partitions the air passage 5. The collected rainwater flows down the surface of the blade structure 3. In addition, if the rainwater is in a horizontal shape, the rainwater that has penetrated deep into the air passage 5 will also be absorbed by the sound absorbing plate 3B.
In the case of blowing not parallel to the water, the water hits the water tone plate 3B and is captured. In this embodiment, the louvers 1 are provided in two stages, and the entire air passage 6 is shaped like a dogleg. Therefore, rainwater is blown in a direction parallel to the ventilation passage 5 of the louver 1 in the first stage. ,
Even if some of the water passes through the air passage 5 of the first-stage louver 1, it can be captured by the second-stage vane structure 3.

Furthermore, if the water return member 7 is provided as in this embodiment, the waterproof performance can be further improved.

Furthermore, in this embodiment, since the air passage 5 communicating indoors and outdoors is partitioned by sound absorbing plates 3B, the noise (air vibration) entering the air passage 5 is absorbed by the air passage 5.
While passing through the sound absorbing plate 3B, the sound is absorbed and attenuated, and the propagation of the noise indoors and outdoors is significantly reduced. In particular, in this embodiment, the outdoor opening and the indoor opening of the air passage 5 are
Since there are no overlapping parts when viewed from the front and back directions of the louver, noise, like rainwater, does not pass straight through the air passage 5, resulting in a great sound reduction effect.

In the above embodiment, the louvers 1 are arranged in two stages, front and rear, but as shown in FIG.
A plurality of slats 32 extending vertically on the outdoor side of the
Even if the louvers 30 are placed adjacent to each other, a sound insulation effect and a large waterproof effect can be obtained.
As shown in FIG. 2, by arranging the louvers 1 in two stages and arranging the louver 30 on the outdoor side, the waterproof effect is dramatically improved. In both figures, 33 is a support frame, and 34 is an air passage defined by the blades 32. In the louvers shown in FIGS. 4a and 4b, the vertically extending slats 32 are oriented so that the air passages 34 and 5 communicate with each other in a dogleg shape to improve the waterproof effect.

In order to clarify the effects of this invention, actual measurement results of waterproof performance, sound insulation performance, and ventilation performance are shown in a separate table in comparison with conventional waterproof louvers.

In this table, Example 1 is a case where the louvers 1 are two-tiered (configuration shown in Figure 1), and Example 2 is a case where a vertically extending slat is arranged adjacent to the outdoor side of Example 1 (Figure 4b). Embodiment 3 is a case in which a vertically extending blade plate is arranged adjacent to the outdoor side of a single-stage louver 1 (configuration shown in FIG. 4a). In addition, Comparative Example 1 is the conventional horizontal waterproof louver 20 shown in FIG.
Comparative example 2 is the conventional vertical waterproof louver 3 shown in Fig. 5b.
This is the case of 0A.

As is clear from this table, in Examples 1 to 3 using the louver 1, a greater sound insulation effect can be obtained over a wide sound range than in Comparative Examples 1 and 2. In addition, the waterproofing effect was dramatically improved compared to Comparative Example 1, especially when the louver 1 of Example 2 was used in two stages and the slats extending vertically on the outdoor side were arranged adjacent to each other. The waterproof effect is outstanding. In addition, regarding ventilation performance, Example 1 with two louvers and Example 3 with vertical slats placed adjacent to the outdoor side of one louver have almost the same ventilation performance as the conventional one, and two louvers have two tiers. In Example 2, in which the vertically extending slats were arranged adjacent to each other on the outdoor side of the air, the necessary and sufficient air permeability was obtained, although the air permeability was slightly lower.

As described above, the louver 1 of the present invention exhibits an excellent sound insulation effect, and although the blade structure 3 has a simple shape, it can obtain the required waterproof performance.

In addition, since the blade structure 3 of the present invention is a triangular cylinder, it has the advantage that the opening ratio of the air passage 5 per unit width of the louver can be increased compared to a case where the blade structure 3 is a rectangular cylinder. In addition, since the reinforcing material can be placed inside the blade structure 3 and does not need to be provided outside, there are significant design and manufacturing advantages when compared to louvers that use conventional blade plates. The structural strength of the blade structure can be ensured based on the triangular shape, which is structurally advantageous in both the horizontal and vertical planes.These advantages are particularly useful when a large vertical length of the louver is desired.
It becomes noticeable.

〔Effect of the invention〕

As explained above, in this invention, since the air passage connecting the indoor and outdoor areas is formed of sound-absorbing plates, the noise that attempts to propagate through the air passage is attenuated by this sound-absorbing plate. Since the rainwater structure is used, the collected rainwater flows down along the surface of the blade structure and is drained away, which prevents it from colliding and scattering during the fall, like a horizontal louver, and improves waterproof and waterproof properties. By ensuring sufficient ventilation, the sound insulation effect can be greatly improved compared to conventional methods.
Moreover, the above effects can be obtained using a simple vertical blade structure.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing an embodiment of the present invention, Fig. 2 is a front view of the above embodiment as seen from the indoor side, and Fig. 3 is a cross-sectional view showing an embodiment of the present invention.
The figure is a side view of the above embodiment, Figures 4a and b are schematic cross-sectional views showing another embodiment of the present invention, and Figures 5a and b are cross-sectional views of a conventional horizontal waterproof louver and a vertical waterproof louver. It is a schematic diagram. In the figure, 1...louver, 2...support frame, 3...blade structure, 3R, 3L...blade structure half, 4...blade structure frame, 5, 6...air passage, 7
... Water return member, 8 ... Current plate, 32 ... Vertical blade plate. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

【table】

Claims (1)

[Scope of Claims] 1. A plurality of vertical blade structures are arranged within a frame at predetermined intervals in the left-right direction, and this blade structure has three sides, and a plurality of vertical blade structures are provided within the frame. A sound insulation system characterized in that the two sides that partition the air passage communicating indoors and outdoors are made of sound-absorbing plates, and the ridges of adjacent blade structures are on the same line or in overlapping positions when viewed from the front and back direction of the louver. Waterproof louvers. 2. The sound insulation system according to claim 1, wherein a water return member is attached to an indoor end of at least one of two surfaces that face each other and define an air passage.
Waterproof louvers. 3. A claim characterized in that a plurality of left-right rows of blade structures are arranged in multiple stages in the front-rear direction of the louver, and the blade structures that are adjacent to each other in the front-rear direction of the louver are arranged with their ridges or surfaces facing or facing each other. The sound insulation/waterproof louver described in item 1 or 2. 4. The sound insulation/waterproof louver according to any one of claims 1 to 3, further comprising a rectifying plate in the air passage. 5. Claims 1 to 5, characterized in that a louver having vertically oriented slats is arranged adjacent to the outdoor side of the frame.
The sound insulation and waterproof louver described in any one of 4.