JP2002243230A - Vent cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To particularly improve the water-stopping performance of the rain blowing up an outer wall surface in the direction from the lower to upper parts in addition to the rain blowing down the outer wall surface in the direction from the upper to lower parts and the rain drifting the outer wall surface from the lateral direction, and moreover secure air-supplying and exhausting performance with the smaller pressure loss of air supply and exhaust compared with the conventional one with the same outline size and having a compact size. SOLUTION: In a vent cap 4 provided with a tubular pipe guide 6 on the rear side of a base plate 5 and surrounded by a front hood 8 having openings in the upper and lower parts of the front side, a top rainproof board 12 with a flat plate-shaped rainproof board 12a and a gutter-shaped rainproof board 12b arranged in multistage superposition is installed inside the upper part in the front hood 8, and an underside rainproof board 14 with the flat plate-shaped rainproof boards 14a and 14b arranged in multistage superposition is installed inside the lower part. Moreover, an outdoor air opening window 15 is formed in the side part of the front hood 8, and side rainproof boards 16a and 16b are provided inside it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vent cap, and more particularly to a supply / exhaust vent cap installed in a ventilation duct provided on a wall of a building.

[0002]

2. Description of the Related Art FIGS. 10 and 11 show an example of a conventional vent cap. In the drawings, reference numeral 1 denotes an outer wall, 2 denotes an outer wall supply / exhaust duct passing through the outer wall 1, and 3 denotes a duct hanging member.

[0003] As a vent cap 4 installed at the opening of such an outer wall supply / exhaust duct 2, a cylindrical pipe guide 6 is provided on the back side of the base plate 5, and further corresponds to the inside of the pipe guide 6 of the base plate 5. A downward rain proof 7 is formed in the portion.

[0004] The front side of the base plate 5 is surrounded by a front hood 8 having a horizontal U-shape and having openings at the top and bottom. A flat (top) rainproof plate 9 inclined downward is provided. At the lower end of the base plate 5, a raindrop prevention plate 10 which is an inclined plate is provided.

[0005] On the peripheral surface of the pipe guide 6, a retaining metal fitting 11, which is a bent leaf spring having a U-shaped fixed end, is attached.

At the time of installation of the vent cap 4, if the pipe guide 6 is fitted into the opening of the outer wall penetration / exhaust duct 2, it is fixed by the pressure of the retaining fitting 11.

[0007] The rainproof plate 9 guards the infiltration of rain. The rainproof plate 9 is provided above the ventilation opening so as to prevent rain from entering the duct, and serves as a flap.

[0008] The raindrop prevention plate 10 protects the exterior wall of the building due to the raindrop, and prevents the raindrop from the hood, which is one of the causes of the contamination of the wall, from being transmitted to the wall.

The front hood 8 prevents the air from returning. The free space in the ceiling releases the pressure of the outside air generated in the hood, thereby preventing the air from flowing back into the duct.

[0010]

In bad weather, the wind and rain blown to the middle-to-high-rise building are not necessarily those of route A that blows down along the outer wall surface, but blow up from bottom to top depending on the wind direction. There are many cases of route B. In such a situation, in the conventional vent caps shown in FIGS. 10 and 11, rainwater entering from the supply / exhaust vent cap 4 installed on the outer wall 1 is supplied to the outer wall through the outer wall through the outside wind pressure. In many cases, water passes through the duct 2 and leaks into the room from a supply / exhaust port installed in the room.

To explain this in more detail, in the case of strong winds in bad weather, the infiltration of rain wind into the outer wall penetration / exhaust duct 2 from the route A passing from the upper part to the lower part in the front hood 8 is caused by a flat plate inclined downward. It can be prevented by the rainproof plate 9 and the downward rainproof gallery 7. However, B goes from the bottom to the top
The rain wind blown up from the lower part of the route causes an action of inducing rain into the outer wall penetration / exhaust duct 2 by the wind in the same direction as the panel inclination of the downward rain proof panel 7.
Water leaks at the indoor air supply / exhaust port at the end of the duct.

The present invention solves the inconveniences of the above-mentioned conventional example, in addition to rain that blows down the outer wall surface from the top downward and rain that flows down the outer wall surface from the lateral direction, as well as raining that flows downward from below the outer wall surface. To provide a vent cap that can significantly improve the water stopping performance of rain that blows up, and has a lower pressure loss of air supply and exhaust compared to conventional ones with the same external size, and can secure air supply and exhaust performance with compact dimensions. is there.

[0013]

According to the present invention, in order to achieve the above object, first, a cylindrical pipe guide is provided on the back side of the base plate, and the front side is surrounded by a front hood having openings vertically. In the upper part inside the front hood, on the upper side of the vent hood, a top-side rainproof plate is installed in which a flat rainproof plate and a rain gutter-shaped rainproof plate are arranged in multiple layers, and a flat-shaped rainproof plate is installed on the lower inner side. A bottom rainproof plate arranged in a multi-tiered arrangement was installed, an outside air opening window was formed on the side of the front hood, and a side rainproof plate was disposed inside the window. The gutter end of the gutter-shaped rain gutter is located outside the side gutter, and thirdly, the upper gutter is from the upper opening of the front hood, and the lower gutter is from the lower opening of the front hood. , The side rainproof plate is opened from the outside air opening window formed on the side of the front hood. It is an gist to be shielded so as not painting.

According to the first aspect of the present invention, it is possible to eliminate the downward rain proof that is provided in the portion corresponding to the inside of the pipe guide of the base plate, and to form the outside air opening window on the side of the front hood. In addition, a larger opening area to the outside air can be secured than conventional products, and the pressure loss of the vent cap can be reduced. Further, by eliminating the downward rain proof, the wind in the same direction as the panel inclination of the rain proof does not induce rain into the outside wall supply / exhaust duct.

Further, by securing a large opening area for the outside air, the amount of rainwater entering the vent cap increases. However, a flat rain plate and a rain gutter-shaped rain plate are provided on the upper side of the front hood. Are arranged in two layers, and a flat rain-proof plate is provided on the lower side of the front hood.
Infiltration of rain and wind is prevented by the lower-side rainproof plates arranged in a stepped manner, and further, on the side of the front hood, by the side-side rainproof plates inside the outside air opening window.

Further, rain wind entering into the inside by the flow of wind from the upper part to the lower part of the front hood passes between the flat-shaped rainproof plate of the upper-side rainproof plate and the rain-gutter-shaped rainproof plate. It is rectified into a rain plate and a rain gutter-shaped rain prevention plate, and it moves away from the end of the outer wall supply / exhaust duct, approaches the back side of the front hood, and passes through the flat rain protection plate on the bottom rain prevention plate to vent cap. Go outside.

The rain wind entering the inside by the flow of wind from the lower part to the upper part of the front hood passes between the flat-shaped rainproof plates on the lower surface, and is rectified by these flat-shaped rainproof plates to penetrate the outer wall. It approaches the back side of the front hood far from the end of the exhaust duct, and passes through the gap between the flat rainproof plate on the upper rainproof plate and the rainproof gutter-shaped rainproof plate to exit the vent cap.

The rain which enters the inside of the outer wall surface from the side of the front hood by the flow of wind in the lateral direction is rectified by the side rainproof plate, and is distant from the end of the outer wall penetration / exhaust duct to the rear side of the front hood. It approaches and is guided by the opposite side rain-proof plate, exits from the outside air opening window on the opposite side, and goes out of the vent cap.

As described above, rainwater infiltration in any of the routes from top to bottom, bottom to top, left to right, and right to left can smoothly escape, thereby allowing rainwater to enter the air supply / exhaust duct connected to the vent cap. Can be prevented.

According to the second aspect of the present invention, in addition to the above function, rain from the top to the bottom is received by the rain gutter end of the rain gutter shaped rain gutter of the upper rain gutter. It is led to the outside of the side rainproof plate at the section and exits through the outside air opening window on the side of the front hood.

According to the third aspect of the present invention, wind and rain into the pipe guide are shielded from any direction of the opening of the front hood, whereby the air supply / exhaust connected to the vent cap is provided. Rainwater can be more reliably prevented from entering the duct.

[0022]

Embodiments of the present invention will be described below in detail. FIG. 1 is a central longitudinal sectional side view showing a first embodiment of a vent cap of the present invention, FIG. 2 is a plan view of the same as the above, and FIG. The same components as those in FIG. 11 are denoted by the same reference numerals.

The vent cap of the present invention is provided with a cylindrical pipe guide 6 on the back side of the base plate 5 as the vent cap 4 installed at the opening of the outer wall supply / exhaust duct 2 similarly to the conventional example. Is surrounded by a front hood 8 having a horizontal U-shape and having upper and lower openings. The constituent members were all made of stainless steel, the pipe guide 6 penetrated the base plate 5, and the outward flange formed at the end was fixed to the base plate 5 with screws or the like. The front hood 8 is composed of a front plate which is curved and slightly bulges forward and side plates formed by bending the left and right sides thereof. The ends of the side plates are superimposed on joining flanges formed on the left and right sides of the base plate 5 and screwed. Fix it detachably.

At the lower end of the base plate 5, a raindrop prevention plate 10 which is an inclined plate is provided by integral bending and formed on the peripheral surface of the pipe guide 6 by a bent leaf spring having a U-shaped fixed end. It is the same that a certain stopper fitting 11 is attached. The horizontal width of the raindrop prevention plate 10 is larger than the width of the base plate 5 and slightly projects right and left, and the end is bent to form a rising flange 10a. For example, the retaining fitting 11 is 1
Three are provided at intervals of 20 °.

According to the present invention, unlike the prior art, the downward rain proof 7 provided at a portion corresponding to the inside of the pipe guide 6 of the base plate 5 is eliminated.

Further, an upper rain-prevention plate 12 is provided inside the upper portion of the front hood 8, and the upper rain-prevention plate 12 includes a flat rain-prevention plate 12a and a rain gutter-shaped rain-prevention plate 12b in multiple stages (2).
Column). Both the flat rain-prevention plate 12a and the rain gutter-shaped rain-prevention plate 12b are inclined plates having a lower end approaching the front side, and are arranged in parallel at intervals.

The rain gutter-shaped rain prevention plate 12b has a rain gutter 13 having a substantially U-shaped cross section in the width direction by bending a lower end portion into a gutter shape.

A lower rain-proof plate 14 is provided inside the lower portion of the front hood 8, and the lower rain-proof plate 14 has flat rain-proof plates 14a and 14b arranged in multiple (two-stage) layers.
Both of the flat rainproof plates 14a and 14b are upwardly inclined plates such that their upper ends approach the front side, and are arranged in parallel at intervals.

In addition to this, a vertically elongated substantially rectangular open air opening window 15 is formed on the left and right sides of the front hood 8, and a substantially vertically elongated substantially rectangular square side rainproof is formed inside thereof. Plates 16a and 16b were provided. This side rain plate 16a,
16b is a front hood 8 from the rear side edge of the outside air opening window 15.
It is an inclined flat plate that is inclined and enters inside.

As shown in FIG. 3, it is assumed that the end 13a of the rain gutter 13 of the rain gutter-shaped rain gutter 12b of the upper rain gutter 12 is located outside the side rain gutters 16a and 16b. In addition,
A flat rain-proof plate 12a of the upper rain-proof plate 12, a rain gutter-shaped rain-proof plate 12b, a flat rain-proof plate 14a of the lower rain-proof plate 14,
14b and the side rainproof plates 16a and 16b are both made of stainless steel, and the joining margins at the ends are spotted and welded into the front hood 8 and incorporated into the front hood 8 side.

Further, the positional relationship between these members will be described in more detail. Flat rainproof plate 12a of top rainproof plate 12
Is located outside the line connecting point A (the lower end point on the opening side of the pipe guide 6 on the base plate 5 side) and point B (the upper end point on the front side of the front hood 8). The gutter-shaped rainproof plate 12b is located outside the line connecting the point A and the point C (the upper end point of the front hood 8 at the upper end of the flat rainproof plate 12a and the horizontal lateral movement point of the point B). Let it.

The flat rain-proof plate 14a of the lower rain-proof plate 14
Is located outside the line connecting point D (the upper end point on the opening side of the pipe guide 6 on the base plate 5 side) and point E (the lower end point on the front side of the front hood 8). Is located outside the line connecting the point D and the point F (the lower end point of the front hood 8 at the lower end of the flat rainproof plate 14a, the horizontal movement point of the point E).

The side rain prevention plate 16a connects the point G (the right end point of the opening surface of the pipe guide 6 on the base plate 5 side) and the point H (the front edge point of the outside air opening window 15 on the left side surface of the front hood 8). Position outside the line,
The side rain prevention plate 16b is formed by a line connecting point I (the left end point of the opening surface of the pipe guide 6 on the base plate 5 side) and point J (the front edge point of the outside air opening window 15 on the right side surface of the front hood 8). Also located outside.

In this manner, the upper rain-proof plate 12 is from the upper opening side of the front hood 8, the lower rain-proof plate 14 is from the lower opening side of the front hood 8, and the side rain-proof plates 16a, 16b are the front hood. 8 through the outside air opening window 15 formed on the left and right sides of
The inside of the opening of the pipe guide 6 can be shielded so as not to be seen, and at the same time, the invasion of wind and rain from up, down, left and right can be remarkably blocked.

The flat rainproof plate 12a and the rain gutter-shaped rainproof plate 12b of the upper rainproof plate 12, the flat rainproof plates 14a and 14b of the lower rainproof plate 14, the outside air opening window 15, and the side rainproof. The number of plates 16a and 16b is not limited to one as shown in the figure, but may be increased according to the entire size.

The installation is the same as the conventional example,
Although not shown, if the pipe guide 6 is fitted in the opening of the outer wall supply / exhaust duct 2, the pipe guide 6 is fixed by the pressing of the retaining fitting 11. (See FIGS. 10 and 11)

FIG. 5 shows a second embodiment of the present invention in which a fire damper 17 is added. The fire damper 17 is composed of two semi-circular plates 17a rotatably mounted on a hinge shaft 18 vertically suspended from the outer end of the pipe guide 6, and is opened by being urged by a spring 19 to form a circular shape. Close. When not normally used, the two semi-circular plates 17 a are closed one on top of the other and locked by the thermal fuse 20.

FIGS. 6 and 7 show a third embodiment of the present invention, in which a bird net 21 and a insect net 22 are provided. The bird net 21 may be relatively large in mesh as compared to the insect net 22. In this embodiment, the bird net 21 is a flat rain plate 12a and a lower rain plate 14 of the upper rain plate 12. Is provided on the surface surrounded by the flat rain-proof plate 14a and the side rain-proof plates 16a and 16b, and the insect-proof net 22 is provided so as to cover the opening surface of the pipe guide 6 on the base plate 5 side.

The bird net 21 and the insect net 22 are arranged as described above.
The front hood 8 can be removed for cleaning clogging with dust, and the front hood 8 is connected to the base plate 5 side with a wire 23 or a chain to prevent the front hood 8 from dropping at that time.

The flat rainproof plate 1 of the upper rainproof plate 12 is also provided.
2a and a rain gutter-shaped rain-prevention plate 12b are attached to the back side of the rain-drop sound-absorbing material 24 by the vibration damping member, and the rain directly hits the flat-plate-shaped rain-prevention plate 12a and the rain-gutter-shaped rain prevention plate 12b. So that no loud noises are heard.

FIGS. 8 and 9 show a fourth embodiment.
As shown in (1), the pipe guide 6 and other members have a shaft attachment structure so that the base plate 5 and the front hood 8 can be rotated with respect to the pipe guide 6. When a vent cap is installed on the outer wall of a building subject to oblique line restriction, the angle can be changed to any angle according to the slope of the outer wall.

[0042]

As described above, the vent cap of the present invention can be used not only for rain falling down on the outer wall surface from top to bottom, rain flowing down the outer wall surface from the lateral direction, but also for rain flowing downward from the outer wall surface. The water stopping performance of the rain blowing toward the air is greatly improved, and the pressure loss of the air supply and exhaust is lower than that of the conventional one having the same external size, so that the air supply and exhaust performance can be secured with compact dimensions.

[Brief description of the drawings]

FIG. 1 is a central vertical sectional side view showing a first embodiment of a vent cap according to the present invention.

FIG. 2 is a central cross-sectional plan view showing a first embodiment of the vent cap of the present invention.

FIG. 3 is a partially cutaway plan view showing the first embodiment of the vent cap of the present invention.

FIG. 4 is a perspective view showing a first embodiment of the vent cap of the present invention.

FIG. 5 is a longitudinal sectional side view showing a second embodiment of the vent cap of the present invention.

FIG. 6 is a partially cutaway front view showing a third embodiment of the vent cap according to the present invention.

FIG. 7 is a vertical sectional side view showing a third embodiment of the vent cap of the present invention.

FIG. 8 is a vertical sectional side view before rotation showing a fourth embodiment of the vent cap of the present invention.

FIG. 9 is a longitudinal sectional side view after rotation showing a fourth embodiment of the vent cap of the present invention.

FIG. 10 is a perspective view showing a conventional example.

FIG. 11 is a vertical sectional side view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Outer wall 2 ... Outer wall penetration and exhaust duct 3 ... Duct hanging hardware 4 ... Vent cap 5 ... Base plate 6 ... Pipe guide 7 ... Rain proof 8 ... Front hood 9 ... Rain proof plate 10 ... Rain drop prevention plate 10a ... Startup Flange 11: stopper metal 12: upper surface rain-proof plate 12a: flat-shaped rain-proof plate 12b ... rain-gutter-shaped rain-proof plate 13 ... rain-gutter 13a ... end portion 14: lower-surface rain-proof plate 14a, 14b ...
Flat-shaped rain-proof plate 15 ... open-air window 16a, 16b ...
Side rainproof plate 17 ... Fireproof damper 17a ... Semicircular plate 18 ... Hinge shaft 19 ... Spring 20 ... Temperature fuse 21 ... Birdproof net 22 ... Insect net 23 ... Wire 24 ... Raindrop noise reduction

Claims (3)

[Claims] 1. A vent cap which is provided with a tubular pipe guide on the back side of a base plate, and which is surrounded by a front hood having an opening at the front and a front side, wherein a flat rainproof plate is formed inside the upper part of the front hood. A rain gutter-shaped rain-proof plate is installed in a multi-tiered stack, and an upper-side rain-proof plate is set in a lower inner part.
A vent cap characterized in that an outside air opening window is formed on a side portion of a front hood, and a side rain prevention plate is disposed inside the window. 2. The vent cap according to claim 1, wherein a rain gutter end of the rain gutter shaped rain gutter of the upper rain gutter is located outside the side rain gutter. 3. The top rain-proof plate is formed from the opening on the front hood.
3. The lower surface rain plate is shielded from the lower opening side of the front hood, and the side rain plate is shielded from the outside air opening window formed on the side of the front hood so that the inside of the pipe guide is not visible. Vent cap.