JP2009138988A - Vent cap for ventilation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vent cap for ventilation capable of preventing exhaust flow from colliding with an outer wall surface, concealing a contaminated inner face, and preventing intrusion of rainwater. <P>SOLUTION: A shielding portion 7 placed outdoors 3 is disposed on an outdoor side end portion of a body cylindrical portion 5 fitted and inserted into a duct 4 disposed in an outer wall 1 of a building to communicate an indoor 2 side with the outdoor 3 side, through a supporting member 6, a cylindrical collar 12 is disposed in a state of being projected from an outdoor side opening portion 9 of the body cylindrical portion 5 to the outdoor 3 side, and a front edge 13 of the collar 12 has a diameter roughly same as that of the shielding portion 7, thus three effects, that is, prevention of attachment of dirt to the outer wall 1 caused by exhaust flow, concealing of contamination inside of the collar 12, and prevention of intrusion of rainwater can be achieved. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a venting vent cap installed on an outer wall portion of a building when indoor air of a house or the like is ventilated outside the room.

  Conventionally, as this type of ventilation vent cap, a ventilation vent cap provided with a shielding plate for preventing the blowing of wind and rain on the indoor side is known (for example, see Patent Document 1).

  Hereinafter, the vent cap will be described with reference to FIG.

As shown in the figure, in a ventilation vent cap in which a shielding plate 103 for preventing wind and rain intrusion is provided by a support member 102 in front of the outdoor side end portion of a cylindrical main body cylinder 101, the shielding plate 103 is substantially flat. On the other hand, an outward flange 104 is formed at the periphery of the front end opening of the main body cylinder 101. The outward flange 104 projects forward and a guide frame 105 is attached. The guide frame 105 is a cylindrical frame flange. 105a and a collar 105b projecting with an enlarged diameter forward, and the front edge of the collar 105b is located on the inner side of the shielding plate 103 to prevent wind and rain intrusion.
JP-A-8-240331 (0010 paragraph, 0011 paragraph, FIG. 1)

  Moreover, the vent vent cap of patent document 2 is known as a vent vent cap provided with the windproof board of another shape in order to prevent wind and rain invasion. The ventilation vent cap will be described with reference to FIG.

As shown in the figure, a duct connecting cylinder member 112 fitted into a ventilation duct 111 provided on a wall 110 of a building, and a ventilation vent fixed to the duct connecting cylinder member 112 and attached to the outdoor side of the wall 110. The cap body 113, the tapered cover 114 that is provided around the ventilation vent cap body 113 and protrudes from the ventilation vent cap body 113 and that widens toward the outdoor side, and wind and rain are generated from the front of the ventilation vent cap body 113. A windbreak plate 115 that covers the outdoor side of the ventilation vent cap body 113 at a position where it is not blown, and is arranged to have a ventilation space between the ventilation vent cap body 113 and the tapered cover 114; The windproof plate 115 is bent toward the outdoor side and the taper-shaped cover 114 is attached to the outdoor side. It has a configuration which is positioned inside the periphery of.
JP 2000-320870 A (3rd page, 4th column, FIG. 2)

  In such a conventional venting vent cap, the venting vent cap described in Patent Document 1 is effective in the rain intrusion when it rains, but when the main purpose of the venting vent cap is ventilated The indoor dirty air passes through the main body cylinder 101, hits the shielding plate 103, changes its direction to the outer peripheral direction of the shielding plate 103, and exhausts it to the outside of the room. At this time, the air hitting the shielding plate 103 is bounced back by the shielding plate 103 and becomes an exhaust flow toward the outer wall surface. When the air exhausted from the room is dirty, the exhaust flow is dirty. Therefore, when the dirty exhaust flow hits the outer wall surface, the outer wall surface becomes dirty. Further, when the wind speed of the exhaust flow is high, the exhaust flow bounced back to the outer wall surface increases, and the outer wall surface is further contaminated by the exhaust flow.

  In addition, the vent vent cap described in Patent Document 2 has an effect of reducing the pressure loss by positioning the peripheral edge of the tapered cover 114 outside the windbreak plate 115, but the exhaust flow from the room is limited. Passes through the inner peripheral surface of the tapered cover 114, so that the inner peripheral surface becomes dirty. In such a case, when the ventilation vent cap installed on the wall is viewed from the front, the dirty inner peripheral surface of the tapered cover 114 can be seen, so that the ventilation vent cap becomes dirty due to the exhaust flow. Not only deteriorates the appearance of the exterior wall, but also deteriorates the appearance of the outer wall itself provided with a vent cap for ventilation.

  On the other hand, in recent years, it has been obligated to always operate the ventilation fan due to the airtightness of the house, and in the vent vent cap described in Patent Document 1, the dirty exhaust flow always hits the wall and the outer wall becomes dirty. End up. In addition, in the ventilation vent cap described in Patent Document 2, the appearance of the ventilation vent cap, and further, the outer wall itself is deteriorated by seeing dirt on the inner surface of the ventilation vent cap installed on the outer wall. .

  In such a conventional vent vent cap, there is a problem that the exhaust flow is bounced back to the shielding plate and the contaminated exhaust flow hits the outer wall, thereby contaminating the outer wall. In addition, if the windshield of the ventilation vent cap is smaller than the tapered cover, there is a problem that the ventilation vent cap itself can be seen and the appearance of the outer wall itself is impaired, and the ventilation vent cap is installed. There is a need for a vent cap for ventilation that prevents the entire outer wall from being soiled and invisible.

  The present invention solves such a conventional problem, and even if there is a shielding plate in front of the ventilation opening, it can prevent the exhaust flow from being bounced off by the shielding plate and prevent the outer wall from being soiled. An object of the present invention is to provide a venting vent cap that can cover a dirty part even when the venting vent cap is seen and can prevent rain from entering.

  In order to achieve the above object, the vent vent cap of the present invention is provided in the outer wall of a building and is fitted into a duct communicating with the indoor side and the outdoor side, and the outdoor side end of the main body cylindrical part A ventilation vent cap provided with a shielding portion provided outside through a support member, and a cylindrical collar is provided so as to protrude from the outdoor side opening of the main body cylindrical portion to the outdoor side, The collar has an axial center coincident with the main body cylinder portion, and its front edge has a diameter substantially equal to that of the shielding portion.

  Further, the other means is that the collar is extended from the first collar portion and a first collar portion which is a cylinder of substantially the same diameter projecting from the outdoor opening of the main body cylinder portion to the outdoor side. The second collar portion having an enlarged diameter on the shielding portion side.

  Another means is that the shielding portion has a protruding portion whose thickness increases on the indoor side from the outer peripheral edge toward the central portion.

  In another means, a frame portion having an outer diameter smaller than the diameter of the shielding portion and an inner diameter larger than the inner diameter of the main body cylinder portion is provided outside the outdoor opening of the main body cylinder portion.

  According to the present invention, even if the indoor air is an exhaust flow containing dirt, the exhaust flow is guided by the cylindrical collar and flows to the side opposite to the outer wall when leaving the outer peripheral edge of the shielding portion. Therefore, the exhaust flow does not hit the outer wall, and the outer wall can be prevented from being contaminated by the exhaust flow. Further, when the ventilation vent cap is viewed from the front, the collar has substantially the same diameter as the shielding portion, so that the dirt attached to the inside of the collar due to the exhaust flow is not shown. Furthermore, it is difficult for rain to invade, and a vent cap for ventilation that can have all three effects can be obtained.

  In addition, when it rains, rainwater enters the inside of the vent vent cap by the collar formed of the second collar portion having an enlarged diameter on the shielding portion side and the first collar portion having substantially the same diameter. Therefore, rainwater can be prevented from entering the room.

  Further, when a dirty exhaust flow from the room passes through the main body cylindrical portion and hits the shielding portion, it is guided along the surface of the projecting portion where the thickness increases on the indoor side, and when the exhaust flow leaves the outer periphery of the shielding portion, Since it flows at an angle to the outdoor side with respect to the outer peripheral direction, the exhaust flow does not return to the outer wall side, and contamination of the outer wall by the exhaust flow can be prevented.

  In addition, rainwater that has entered from between the shielding portion and the front edge of the collar adheres to the front surface portion of the main body cylinder portion, but the attached rainwater is attached to the main body cylinder by a frame provided outside the opening of the main body cylinder portion. Therefore, it is possible to prevent rainwater from entering the room.

  The ventilation vent cap according to claim 1 of the present invention is provided in a main body cylinder portion that is provided in an outer wall of a building and is fitted into a duct that communicates the indoor side and the outdoor side, and the outdoor end portion of the main body cylindrical portion. A ventilation vent cap provided with a shielding part provided outside through a support member, wherein a cylindrical collar is provided by projecting outward from an outdoor side opening of the main body cylinder part, and the collar is a main body Even if the cylindrical portion and the axial center coincide with each other and the front edge thereof has substantially the same diameter as that of the shielding portion, the exhaust flow is blocked even if the indoor air is an exhaust flow containing dirt. When leaving the outer peripheral edge, it flows to the opposite outer wall side, so it does not hit the outer wall surface and prevents the outer wall surface from being contaminated by the exhaust flow, and when the ventilation vent cap is viewed from the front, You can't see the dirt attached to the Pile, both ventilation vent cap to Qin three effect that can be obtained.

  The vent vent cap according to claim 2 is characterized in that the collar is a first collar portion which is a cylinder of substantially the same diameter projecting from the outdoor side opening of the main body cylinder portion to the outdoor side, and the first collar. The second collar part is extended from the part and has a second collar part with an enlarged diameter on the shielding part side. When it rains, the rain is applied to the outer periphery of the collar, but the second collar part is attached to the main body cylinder part. Since the diameter is reduced, rainwater flows toward the first collar portion, and flows along the outer periphery of the first collar portion and drops downward from the left and right. Since rainwater flows from the front edge of the collar to the rear side, the rainwater does not enter the inside of the ventilation vent cap, and rainwater can be prevented from entering the room.

  In addition, since the second collar portion extends to the outdoor side, when the exhaust flow flows out from the outer periphery of the shielding portion, it has a wind direction component that faces the outdoor side, reducing the flow toward the outer wall side. It is possible to prevent the outer wall surface from becoming dirty.

  Further, in the vent vent cap according to claim 3, the shielding part has a projecting shape part whose thickness increases on the indoor side as it goes from the outer periphery to the center part, When it hits the shielding part through the cylinder part, it is guided along the surface of the protruding part, and when the exhaust flow leaves the outer periphery of the shielding part, it flows at an angle outside the outer peripheral direction, so the exhaust flow is The outer wall can be prevented from being contaminated by the exhaust flow without returning to the outer wall side.

  Further, the vent vent cap according to claim 4 is provided with a frame portion having an outer diameter smaller than a diameter of the shielding portion and an inner diameter larger than the inner diameter of the main body cylinder portion outside the outdoor opening portion of the main body cylinder portion. Rainwater that has entered from between the shielding part and the front edge of the collar adheres to the front part of the main body cylinder part, but the attached rainwater flows along the outer periphery of the frame part, dripping from the left and right, Therefore, it is possible to prevent the rain that has entered the inside of the collar from entering the room.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIG. 1, a main body cylinder portion 5 that is provided on an outer wall 1 of a building and is fitted and inserted into a duct 4 that communicates an indoor 2 and an outdoor space 3, and a support member 6 in front of an outdoor end of the main body cylinder portion 5. A flange 11 that is in contact with the outer wall surface 1a is formed on the peripheral edge 10 of the main body cylinder portion 5 on the outdoor opening 9 side. A cylindrical collar 12 is provided so as to protrude from the outer opening 9 toward the outdoor side 3. The collar 12 is provided so that the main body cylinder portion 5 and the shaft center coincide with each other, and the front edge 13 thereof is formed to have substantially the same diameter as the shielding portion 7.

  In the above configuration, when ventilation is performed, the exhaust air that is dirty air in the room 2 is guided by the collar 12 through the main body cylinder portion 5, reaches the shielding portion 7, and flows outward along the shielding portion 7. . And when an exhaust flow leaves | separates from the outer periphery 14 of the shielding part 7, it flows toward the outer peripheral direction as it is. At this time, since the front edge 13 which is the outer peripheral portion of the collar 12 has substantially the same diameter as the outer peripheral edge 14 of the shielding portion 7, when the ventilation vent cap is viewed from the front, dirt on the inner surface of the collar 12 is removed. I can't see it. Further, when the exhaust flow reaches the outer peripheral edge 14 of the shielding part 7, it passes between the shielding part 7 and the collar 12, but is separated from the outer peripheral edge 14 of the shielding part 7 and the front edge 13 of the collar 12 at the same time. The exhaust flow does not face the main flow toward the outer wall 1. At this time, if the front edge 13, which is the outer peripheral portion of the collar 12, is located on the inner side of the outer peripheral edge 14 of the shielding portion 7, the exhaust air flow is the outer peripheral edge 14 of the shielding portion 7 and the front edge 13 of the collar 12. When passing through, the shielding part 7 causes the main flow of the exhaust flow to flow toward the outer wall 1 side. However, in the first embodiment, the exhaust flow is separated from the collar 12 and the shielding portion 7 at the same time, so that the main flow of the exhaust flow does not go to the outer wall 1 and the outer wall surface 1a can be prevented from becoming dirty. Further, the outer peripheral edge 14 of the shielding part 7 and the front edge 13 which is the outer periphery of the collar 12 have substantially the same diameter, that is, the front edge 13 of the collar 12 is not larger than the outer peripheral edge 14 of the shielding part 7. It is possible to prevent rain from entering the inside of 12.

  Thus, by setting the shielding part 7 and the collar 12 to have substantially the same diameter, the three effects of preventing the adhesion of dirt to the outer wall surface 1a due to the exhaust flow, blinding the dirt inside the collar 12, and preventing rainwater intrusion are brought together. be able to.

  In the first embodiment, the flange 11 of the main body cylinder portion 5 is illustrated as an integral shape with the main body cylinder portion 5, but the flange 11 may be formed as a part of the collar 12 as shown in FIG. There is no difference in the original effect.

  Further, although the collar 12 is illustrated as a separate body from the main body cylindrical portion 5, it goes without saying that both may be integrally formed.

(Embodiment 2)
As shown in FIG. 3, the collar 12 </ b> A includes a first collar portion 15 that is a cylinder having substantially the same diameter that protrudes from the outer peripheral portion of the flange 11 formed in the main body cylinder portion 5 to the outdoor 3 side, and the first collar portion. 15 and a second collar portion 16 having an enlarged diameter on the shielding portion 7 side.

  In the above configuration, when it rains, the rain is applied to the outer periphery of the collar 12 </ b> A, but the second collar portion 16 expands in diameter toward the shielding portion 7, in other words, the second collar portion 16 faces the main body cylinder portion 5. Since the diameter of the second collar portion 16 is reduced, the upper portion of the second collar portion 16 has a slope through which rainwater flows toward the first collar portion 15, and the rainwater flows from the second collar portion 16 to the first collar. It flows toward the portion 15, flows downward along the outer periphery of the first collar portion 15, and drops downward when reaching the left and right ends 17 of the first collar portion 15 shown in FIG. 4. At this time, even if a strong wind such as a typhoon is blown from the outside to the outer wall surface 1a, the rainwater dripped from the collar 12A falls on the outer wall surface 1a side from the front edge 13 of the collar 12A. On the contrary, it flows to the shielding part 7 side and does not enter from the front edge 13 of the collar 12A.

  Thus, even when strong wind such as a typhoon blows during rain, rain does not enter the main body cylinder portion 5 and rain water can be prevented from entering the room.

  In addition, since the collar 12A spreads as the diameter of the second collar portion 16 increases on the shielding portion 7 side, the exhaust flow flows along the inclination of the second collar portion 16 immediately before reaching the shielding portion 7, The exhaust flow has a directional component toward the outer wall 1 side, and when it reaches the shielding portion 7 and wind comes out from the outer peripheral edge 14, it is diffused and reduced toward the outer wall 1 side. For this reason, it can prevent that dirty air hits the outer wall surface 1a, and can prevent the outer wall surface 1a from becoming dirty.

(Embodiment 3)
As shown in FIG. 5, the third embodiment has a protruding portion 19 that increases in thickness toward the interior 2 as the shielding portion 7A moves from the outer peripheral edge 14A toward the central portion 18 as compared with the second embodiment. There is a feature in the point.

  In the above configuration, the dirty exhaust flow from the room 2 is guided along the surface of the protruding portion 19 when it hits the shielding portion 7A through the main body cylindrical portion 5, and the exhaust flow is guided by the outer peripheral edge 14A of the shielding portion 7A. When leaving, the exhaust flow does not return to the outer wall 1 side, and the outer wall surface 1a can be prevented from being contaminated by the exhaust flow.

  Further, the exhaust flow is rectified by both the tapered surface 20 of the protruding portion 19 of the shielding portion 7A and the tapered surface 21 of the second collar portion 16, and the blowing angle is determined to be blown out toward the anti-outer wall 1, The effect of preventing the walls from being soiled further increases.

(Embodiment 4)
As shown in FIG. 6, the fourth embodiment is different from the first embodiment in that the outer diameter of the main body cylinder portion 5 is smaller than that of the shielding portion 7 and the inner diameter of the main body cylinder is outside the outdoor opening 9. A feature is that a frame portion 22 larger than the inner diameter of the portion 5 is provided.

  In the above configuration, rain that has entered from between the shielding portion 7 and the collar 12 adheres to the front surface portion 23 of the main body cylinder portion 5, but the attached rainwater flows along the outer periphery of the frame portion 22, and the left and right ends of the outer periphery. Therefore, it is possible to prevent rain that has entered the inside of the collar 12 from entering the room.

  The venting vent cap according to the present invention is attached to the outer wall of a building, taking into account the three effects of preventing dirt on the outer wall due to the exhaust flow, preventing dirt on the inner surface of the venting vent cap, and preventing entry of wind and rain. It is useful as a vent cap for ventilation.

Sectional drawing which shows the installation state of the vent cap for ventilation of Embodiment 1 of this invention Sectional drawing which shows another structure of the vent cap for the ventilation Sectional drawing which shows the installation state of the vent cap for ventilation of Embodiment 2 of this invention Perspective view of the venting vent cap Sectional drawing which shows the installation state of the vent cap for ventilation of Embodiment 3 of this invention Sectional drawing which shows the installation state of the vent cap for ventilation of Embodiment 4 of this invention Sectional view showing a conventional vent cap Sectional drawing which shows the other vent vent cap for the past

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer wall 1a Outer wall surface 2 Indoor 3 Outdoor 4 Duct 5 Main body cylinder part 6 Support member 7 Shielding part 7A Shielding part 9 Outdoor opening part 12 Color 12A Color 13 Front edge 14A Outer peripheral edge 15 1st collar part 16 2nd color Part 18 Center part 19 Projection shape part 22 Frame part

Claims (4)

A main body cylinder portion that is provided in the outer wall of the building and is inserted into a duct that communicates between the indoor side and the outdoor side, and a shielding portion that is provided outside the outdoor portion of the main body cylinder portion via a support member. A vent cap for ventilation, which is provided with a cylindrical collar protruding from the outdoor opening of the main body cylinder portion to the outdoor side, the collar being aligned with the main body cylinder portion, and having a front edge thereof Ventilation vent cap characterized in that has a diameter substantially the same as that of the shielding part. The collar has a first collar portion that is a cylinder of substantially the same diameter protruding from the outdoor side opening of the main body cylindrical portion to the outdoor side, and an enlarged diameter extending from the first collar portion to the shielding portion side. The ventilation vent cap according to claim 1, further comprising: a second collar portion. The ventilation vent cap according to claim 1 or 2, wherein the shielding portion has a protruding portion whose thickness increases toward the indoor side from the outer peripheral edge toward the central portion. The ventilation vent according to any one of claims 1 to 3, wherein a frame part having an outer diameter smaller than a diameter of the shielding part and an inner diameter larger than the inner diameter of the main body cylinder part is provided outside the outdoor opening of the main body cylinder part. cap.

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