JP2004028418A - Vertical type waterproofing louvre - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vertical type waterproofing louvre that can smoothly discharge captured rainwater even if the fresh air is taken in speedily and hence extremely prevents the rainwater from entering an indoor side. <P>SOLUTION: The vertical type waterproofing louvre comprises: a plurality of impeller boards 10 for preventing progress in raindrops; and a frame 20 for retaining each impeller board 10 in a raised state so that the raindrops colliding with the impeller boards 10 flow down along the impeller boards 10. A drain chamber 25 is provided at the lower portion of the bottom surface of the frame 20. A drainage hole 23 for allowing the rainwater flowing down along the impeller boards 10 to flow into the drain chamber 25 is formed on the bottom surface of the frame body 20. Then, a slit 26 for drain with opening area smaller than that of the drainage hole 23 is provided on the outdoor sidewall surface of the drain chamber 25. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vertical waterproof louver installed at an outside air intake of an air conditioner or the like.
[0002]
[Prior art]
Generally, a louver is installed at the outside air intake of an air conditioner or the like for the purpose of adjusting the amount of air or the wind direction, preventing raindrops, foreign matter, or the like from entering. As one of such louvers, a vertical waterproof louver is known. The vertical waterproof louver includes a plurality of blade plates for preventing the progress of raindrops, and a frame body for holding the respective blade plates in an upright state so that raindrops colliding with these blade plates flow down along the blade plates. It has. Each of the blades is arranged in a horizontal row so that adjacent blades are arranged at predetermined intervals and slightly overlap each other so as to allow outside air to pass but not raindrops. In addition, a drainage channel is provided at the bottom of the frame for guiding rainwater that has collided with the slats and flowed down to the outside.
[0003]
According to the vertical waterproof louver having such a configuration, the raindrops heading to the outside air intake together with the outside air flow down to the bottom of the frame body on any of the blades, and are discharged outside through the drainage channel. Therefore, it is possible to prevent rainwater from entering the room from the outside air intake.
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional vertical waterproof louver, when the outside air is taken in at a high speed equal to or higher than a predetermined wind speed (for example, 4 m / s), the rainwater flowing down to the bottom of the frame body against the blade plate causes the high-speed outside air to flow. In some cases, the spilling over into the indoors.
[0005]
The present invention has been made in view of such circumstances, and even in the case of taking in outside air at a high speed, it is possible to smoothly discharge rainwater collected by the blades, and thereby, it is possible to discharge rainwater indoors. An object of the present invention is to provide a vertical waterproof louver that can prevent intrusion as much as possible.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a frame for holding a plurality of blades for stopping the progress of raindrops, and a state in which each of the blades is erected so that raindrops colliding with the blades can flow down along the blades. In a vertical waterproof louver provided with a body, a drain chamber is provided below the bottom surface of the frame body, and water for flowing rainwater flowing down along the blade plate into the drain chamber is provided on the bottom surface of the frame body. A drain hole is formed, and a drain slit having a smaller opening area than the drain hole is provided on the outdoor side wall surface of the drain chamber.
[0007]
According to the vertical waterproof louver according to the first aspect of the present invention, a drain hole for flowing rainwater flowing down along the blade plate into the drain chamber is formed on the bottom surface of the frame, and the drain is formed. Since a slit for drainage was provided on the outdoor side wall surface of the room, after raindrops that collided with any of the blades and flowed down to the bottom of the frame along the blades, flowed into the drain chamber through the drain holes , And is discharged outside through a drain slit.
Moreover, since the opening area of the drain slit is made smaller than that of the drain hole, the rain water flowing down the blades is drained even when the outside air is taken in at a high speed (4 to 10 m / s). , And the rainwater in the drain chamber can be smoothly discharged outside through the slit. In other words, even when the outside air is taken in at high speed, the collected rainwater can be discharged smoothly by utilizing the differential pressure generated between the drain chamber and the outside, and the rainwater enters the indoor side. Can be prevented as much as possible.
[0008]
The slit width is set in the range of 0.2 to 1.5% with respect to the dimension of the outside air intake in the height direction, or in the range of 8 to 50% with respect to the dimension of the drain chamber in the height direction. It is desirable to do. When set in such a range, for example, even when the intake speed of the outside air is 4 to 10 m / s, the collection efficiency of rainwater can be maintained at 95% or more. The slit may be a single slit provided continuously or a combination of a plurality of slits provided intermittently.
[0009]
According to a second aspect of the present invention, in the vertical waterproof louver according to the first aspect, the drain hole is disposed on the indoor side of the bottom surface of the frame.
[0010]
According to the second aspect of the present invention, since the drain holes are arranged on the indoor side of the bottom surface of the frame, rainwater can easily flow into the drain chamber, and drainage performance of rainwater can be enhanced.
[0011]
According to a third aspect of the present invention, in the vertical waterproof louver according to the first or second aspect, the water flows down to the outdoor end and the indoor end of the bottom surface of the frame along the blade plate. An upright wall for preventing rainwater from scattering is erected, and the upright wall at the indoor end is higher than the upright wall at the outdoor end.
[0012]
According to the third aspect of the present invention, an upright wall is erected at each of the outdoor end and the indoor end of the bottom surface of the frame body, and the upright wall at the indoor end is erected at the outdoor end. Since it is higher than the wall, it is possible to further prevent the rainwater flowing down along the slats from scattering and entering the indoor side.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
1 and 2 show one embodiment of a vertical waterproof louver according to the present invention, and reference numeral 10 in the figures denotes a blade plate.
The blade plate 10 is a vertically long plate-like member bent and formed in a substantially U-shaped cross section, and upper and lower ends thereof are fixed to the frame body 20. Each of the blades 10 is arranged at substantially equal intervals substantially in parallel with the side wall surface 21 of the frame 20 and in such a state that adjacent blades 10 slightly overlap each other in the front-rear direction. As a result, an air flow path S bent in a V-shape is formed in the gap between the adjacent blade plates 10, and the raindrops flowing into the air flow path S together with the outside air collide with any of the blade plates 10. It has become.
A projecting piece 11 having an arc-shaped cross section is provided on the outer peripheral side of the bent portion of each blade plate 10 so as to extend forward, and a plurality of protrusions 12 are provided on the rear side of each blade plate 10. It is provided so as to protrude. That is, the airflow in the air flow path S is disturbed by the cooperation of the protruding pieces 11 and the projections 12, and the raindrops flowing into the air flow path S are likely to collide with the blade plate 10, and as a result, The efficiency of rainwater collection has been improved.
[0014]
On the other hand, the frame body 20 is a rectangular cylindrical frame body, and the end surfaces on the outdoor side (front side) and the indoor side (rear side) are open. As shown in FIG. 2, standing walls 22 a and 22 b for preventing rainwater from flowing down along the slats 10 are provided at each of the outdoor end and the indoor end of the bottom surface of the frame 20. It is erected. The upright wall 22a on the indoor side is higher than the upright wall 22b on the outdoor side, and the tip is bent inward of the frame 20.
As shown in FIG. 1, a drain chamber 25 is provided below the frame body 20, and rainwater flowing down along the slats 10 is poured into the drain chamber 25 on the bottom surface of the frame body 20. A plurality of drain holes 23 are provided along the upright wall 22a on the indoor side. These drain holes 23 are circular in shape so as not to impair the strength of the bottom of the frame 20. A drain slit 26 is formed at the lower end of the front wall of the drain chamber 25. The opening width and length of the slit 26 are set in advance so that the opening area is smaller than that of the drain hole 23.
That is, in the present embodiment, the drain chamber 25 is provided below the bottom surface of the frame body 20, a plurality of drain holes 23 are formed in the bottom surface of the frame body 20, and By providing a drain slit 26 having an opening area smaller than that of the drain hole 23, a drainer is configured.
[0015]
According to the vertical waterproof louver having the above-described configuration, the raindrops flowing into the air flow path S between the blades 10 collide with any of the blades 10 and flow down to the bottom of the frame 20 along the blades 10. After that, the water flows into the drain chamber 25 through the drain hole 23, and then is discharged outside through the drain slit 26.
[0016]
In particular, in the vertical waterproof louver, since the slit 26 having an opening area smaller than the drain hole 23 is provided at the lower end of the front wall of the drain chamber 25, the outside air is taken in at a high speed (4 to 10 m / s). In this case, the rainwater flowing down along the blade plate 10 can be smoothly poured into the drain chamber 25, and the rainwater in the drain chamber 25 can be smoothly discharged outside from the slit 26.
Further, since the drain holes 23 are arranged on the indoor side of the bottom surface of the frame 20, rainwater easily flows into the drain chamber 25, and the standing wall 22a for preventing scattering is provided at the indoor end of the bottom surface of the frame 20. Since it is erected, rainwater that has flowed down along the slats 10 is less likely to scatter indoors.
Therefore, according to the vertical waterproof louver, even when the outside air is taken in at a high speed, the collection efficiency of the rainwater can be kept at a high level, and the intrusion of the rainwater into the indoor side can be prevented as much as possible. .
[0017]
【Example】
In order to confirm the effects of the present invention, rainwater collection efficiency was measured for each of the vertical waterproof louvers according to the present invention and the conventional vertical waterproof louvers. With respect to the vertical waterproof louver according to the present invention, measurement was performed by setting the opening width of the slit 26 to 2.5 mm, the length to 420 mm, the diameter of the drain hole 23 to 25 mm, and the number of drain holes 23 to 12. As for the vertical waterproof louver, the measurement was performed using three types of commercially available products (commercially available products A, B, and C) as they were.
[0018]
As shown in FIG. 3, when the wind speed (the intake speed of the outside air) is in the low speed range (1 to 3 m / s), there is no significant difference in the respective collection efficiencies. Efficiency was obtained.
However, when the wind speed entered a high-speed region of 4 m / s or more, the respective collection efficiencies varied, and in the conventional vertical waterproof louvers, the collection efficiency was significantly reduced. On the other hand, in the vertical waterproof louver according to the present invention, the collection efficiency was hardly reduced, and a high collection efficiency of 95% or more could be maintained at least up to a wind speed of 10 m / s. .
[0019]
In addition, when the relationship between the opening width of the slit 26 and the collection efficiency of rainwater was examined for the vertical waterproof louver according to the present invention, the opening width of the slit 26 in the high-speed region where the wind speed was 4 to 10 m / s was: When it exceeds about 1.5% with respect to the height dimension of the outside air intake and about 50% with respect to the height dimension of the drain chamber, the rainwater collection efficiency may start to gradually decrease. confirmed. Therefore, when the outside air is taken in at a high speed, the opening width of the slit 26 is set in the range of 0.2 to 1.5% with respect to the dimension of the outside air intake in the height direction, or in the height direction of the drain chamber. Is desirably set in the range of 8 to 50% of the dimension.
[0020]
【The invention's effect】
As described above, according to the vertical waterproof louver according to the present invention, even when the outside air is taken in at a high speed, the collected rainwater can be smoothly discharged, and the rainwater enters the indoor side. It can be prevented as much as possible. Therefore, when taking in outside air at high speed, the vertical waterproof louver can be suitably used.
[Brief description of the drawings]
FIG. 1 is a plan sectional view showing an embodiment of a vertical waterproof louver according to the present invention.
FIG. 2 is a vertical sectional view of a lower portion of the vertical waterproof louver of FIG. 1;
FIG. 3 is a graph showing rainwater collection efficiency with respect to wind speed.
[Explanation of symbols]
10 Blade plate 20 Frames 22a, 22b Standing wall 23 Drain hole 25 Drain chamber 26 Slit

Claims (3)

A vertical waterproof louver comprising: a plurality of blades for preventing the progress of raindrops; and a frame for holding the respective blades in an upright state so that the raindrops colliding with the blades flow down along the blades. At
A drain chamber is provided below the bottom surface of the frame body, and a drain hole for flowing rainwater flowing down along the blades into the drain chamber is formed on the bottom surface of the frame body. A vertical waterproof louver, wherein a slit for drainage having a smaller opening area than the drain hole is provided on an outdoor side wall surface. The vertical waterproof louver according to claim 1, wherein the drain hole is arranged on the indoor side of the bottom surface of the frame. At each of the outdoor end and the indoor end of the bottom surface of the frame body, an erecting wall for preventing scattering of rainwater flowing down along the slats is erected, and an erecting wall at the indoor end is provided. The vertical waterproof louver according to claim 1 or 2, wherein the height of the vertical waterproof louver is higher than that of the upright wall at the outdoor end.

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