JPH11132513A - Vent cap with wind shield - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit the vent cap to be cleaned, without removing the cap by forming the body integrated with support legs having wind shield plates round a mounting opening communicating with an outdoor opening of a duct connection. SOLUTION: The vent cap 1 comprises an insect net 17 covering an outside opening 12a of a dust connection 12 fitted in the inner diameter of a duct 35 fitted in a vent hole 34 of a wall 30 and windshield plate 2 mounted on the tops of four support legs 8 of the body 10 to block outside air from directly entering frontally the opening 12a of the connection 12. Exhaust air from the opening 12a first flows against the mounting plane 4a of the windshield plate 2 in front of the opening and then exhausts along the mounting plane 4a in every direction from between the plate 2 and body 10. The air flowing to the top of the body 10 is reduced at the top of an upper rectifier plate 5 and involved by an negative pressure in a space 5b near the top face into a flow weak enough to blow upwards as high as to the bottom of the eaves, thus avoiding the contamination.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vent cap for ventilation, which is attached to a ventilation opening for ventilating a room or a kitchen in a house or the like.

[0002]

2. Description of the Related Art Conventionally, this type of vent cap is known from Japanese Utility Model Registration Publication No. 2537978 and has a structure as shown in FIG. This will be described below with reference to FIG. In the figure, 30 is a wall of a building, 34 is a ventilation hole provided on the wall for communicating between the room and the outside, 31 is the outside surface, and 32 is the inside surface. Reference numeral 12 denotes a duct connection portion fitted to the ventilation port 34, which has a connection pipe portion 13 penetrating into the ventilation port 34, and a flange 14 bent toward the outside of the ventilation port at the outdoor end of the duct connection portion 12. A diamond-shaped wire mesh 17 is sandwiched and fixed to the flange 14 by the main body 10. The main body 10 has a trumpet-like edge 19 continuously connected to the outside. Reference numeral 21 denotes a windbreak plate which is stretched over the main body 10 via the support legs 18, and has a Fuji-shaped throttle section 22 having a cross section formed at the center of the front circular shape toward the wall surface side.

The vent cap constructed as described above is attached to the ventilation port 34 of the wall surface 30 to exhaust the air inside the room to the outside, and when the wind is transmitted from below through the wall and blows upward, the flange 14 and the rhombus are formed. A flared opening 19 connected to the outside forms a tube portion 20 having the same diameter as the connection tube portion 13 in the main body 10, and a duct connection portion. The water contained in the water 12 flows out and falls without being transmitted to the outer surface of the wall.

[0004]

The conventional vent cap constructed as described above has the following problems. 1. The main body and the connecting pipe are fastened together by the screws of the legs,
Since this screw portion is accommodated between the main body and the wall, when cleaning the wire netting, it is necessary to remove the entire vent cap and then remove the screw of the leg to disassemble. In addition, when the entire vent cap is removed, when it is reattached, it is attached in a posture different from the initial attachment state, so that there is a problem that the appearance is poor. 2. When the indoor air is exhausted outside, the exhaust leaks from all around the gap between the windbreak board and the main unit, and if it is installed under the eaves due to exhaust including kitchen oil, smoke, etc. There was a problem of soiling. 3. In addition, when air containing moisture in the room is exhausted outside in the winter, the air hits the windproof plate cooled by the outside air, causing dew condensation on the windproof plate. Water droplets tend to be generated at the lower part of the windbreak plate and are easily collected, causing a problem of icicle formation.

The present invention has been made in order to solve such problems of the prior art, and an object thereof is to clean a wire net without removing the entire vent cap. , Do not stain the eaves and walls,
Moreover, it is intended to provide a vent cap free from icicles in winter.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a duct connecting portion which is attached to a ventilation opening provided in a wall of a building and has an opening for communicating between the inside and the outside of a building, and a mounting attached to the outdoor side of the duct connecting portion. A main body having an opening communicating with the opening of the duct connection part, a plurality of legs provided around the opening, and a windproof plate attached to the legs of the main body. And the supporting legs are integrally formed.

Further, a standing portion is provided between the legs of the main body, the edge of the standing portion is bent inward, and a flow port is provided below the standing portion when attached to a wall. It is.

[0008] Further, a duct connection portion which is attached to a ventilation opening provided on a wall of a building and has an opening communicating between the room and the outside, and a mounting portion which is mounted on the outdoor side of the duct connection portion, has a duct connection portion. It has an opening communicating with the opening, and comprises a main body provided with a plurality of supporting legs around the opening of the mounting portion, and a windproof plate mounted on the supporting leg of the main body, the main body when mounted on a wall. A rectifying means is provided in an upper portion of the first embodiment.

[0009] A duct connecting portion which is attached to a ventilation opening provided on a wall of a building and has an opening communicating between the room and the outside, and a mounting portion which is mounted on the outdoor side of the duct connecting portion, has a duct connecting portion. A main body having an opening communicating with the opening and having a plurality of supporting legs provided around the opening of the mounting portion; and a windproof plate attached to the supporting leg of the main body. A concave portion serving as a mounting surface for the concave portion is provided, and the mounting surface of the concave portion is formed in a plane, and the size of this plane is larger than the opening area of the duct connection portion.
Further, it is formed in a plane such that a corner of the plane is located outside the opening.

[0010] Further, the corner of the mounting surface of the supporting leg in the concave portion of the windbreak plate is configured to be higher in the wall direction than the height of the peripheral portion of the windbreak plate.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. An embodiment of the present invention will be described with reference to FIGS. Reference numeral 1 denotes a vent cap for ventilation according to the present invention, which is attached to the wall of a building and communicates between the room and the outside to ventilate. The vent cap is attached to the ventilation port 34 provided on the wall from the outdoor side, and is used for outdoor ventilation. The opening has a square windbreak plate 2 in front of the opening, and is configured as follows. The vent cap 1 is roughly divided into the vent holes 3 of the wall 30.
4, a duct connection portion 12 fitted to the inner diameter of a duct 35, and an outdoor opening 12a of the duct connection portion 12
Insect net 17 provided to cover the
A main body 10 having a supporting leg 8 at a location, and an opening 1 of a duct connecting portion 12
The windproof plate 2 prevents external wind from directly entering the front surface 2a from the front.

The duct connecting part 12 is inserted into the duct 35 and connects the duct 35 to the cylindrical connecting pipe part 13.
And a flange 14 formed by bending the connection pipe 13 at a right angle. A curling 13a formed by bending the connecting pipe 13 toward the inner diameter side of the connecting pipe 13 is provided on the indoor end face of the connecting pipe 13, and the curling portion 13a is sandwiched between the curling portions 13a so as not to protrude into the inner surface of the ventilation port 34. The retaining fittings 15 are provided at three equal intervals. Flange 14
Are provided with two screw holes for tightening and fixing a body 10 to be described later with thumb screws 18, and the peripheral edge of the flange 14 is bent toward the wall to form an edge 14a.

The main body 10 includes a flange 1 of the duct connecting portion 12.
4 so as to cover the mounting portion 10a.
An opening 10b communicating with the duct connection part is provided at the center of the line a. The mounting portion 10a is provided with two holes for tightening a thumb screw 18 for fixing to the duct connection portion 12, and the flange 1 of the duct connection portion 12 is provided.
An edge 10 c whose end is bent so as to surround 4 is formed, and its end surface is in contact with the outdoor side surface 31 of the wall 30. The main body 10 can be fastened to and removed from the flange 14 of the duct connection portion 12 by using two thumb screws 18 without tools.
When the windshield 2 is fixed to the support legs 8 as described later, the distance between the windshield 2 and the main body 10 is not wide, so that the thumb screw 18 can be operated without using a tool such as a screwdriver. It is an effective method, especially for working in high places.

In the vicinity of the opening 10b, four support legs 8 formed by drawing and cutting and raising in the opposite direction to the wall 30 side for fixing a windbreak plate 2 described later, and between the support legs 8 When attached to the duct connection part 12, on the upper side,
A rectifying plate 5 as rectifying means for entraining the blown air to prevent the wind from hitting the ceiling under the eaves, thereby preventing the ceiling under the eaves from being polluted. The standing portion 6 is provided at a lower height than the current plate 5.

The rectifying plate 5 has an end 5a extending from the mounting portion 10a, and is provided between the standing portion 6 and the mounting surface 4a of the windbreak plate.
/ 2, and has a structure having a space 5b above it. The end 5a is a base 5 close to the mounting portion 10a.
The surface of the current plate 5 is tapered in a circular arc smaller than d. For this reason, the amount of wind blown upward from here is reduced between the end portion 5a and the windbreak plate 2, and
The space 5 near the upper surface of the current plate 5 is cut off at the end 5a.
When b becomes a negative pressure, the wind is caught in the space 5b and the upward blow is weakened, so that the wind hardly reaches the ceiling portion, and there is no contamination.

At the end of the standing portion 6 opposite to the wall, a rising edge 23 is provided which is bent inward so that rainwater due to the external wind hardly enters the connecting pipe 13 directly. In addition, the current plate 5
In order to make it easy for water from the inner diameter of the connecting pipe 13 to flow to the wall, the rising edge 23 which is the lowermost part of the rising portion 6 is formed to be lower at the lower portion 6 of the rising portion opposite to the lower portion. A flow port 7 is provided. The flow port 7 is formed by a method such as plastic deformation or cutting.

As shown in FIG. 5, the support leg 8 is formed so that its cross-sectional shape having a support edge 9 has a U-shape for the purpose of reinforcement, and a central portion of the support 8 for enhancing strength such as bending. Is bent outward at substantially the same position as the end of the current plate 5, and a convex portion bulging outward is provided. At the end of the support leg 8, a tongue 8a for fixing the windbreak plate 2 is attached to the mounting portion 1.
It is bent outward in parallel with the plane of Oa. The tongue 8a is provided with a hole 8b for caulking and fixing the windbreak plate 2 through the rivet 16. Since the support leg 8 is formed integrally with the main body 10, the support
There is no need to connect the cable to the main body 10 and assembly is simplified, and the number of components such as legs and screws can be omitted. Windbreak board 2
Each surface of the tongue 8a fixed to the mounting surface 4a of the
When the windproof plate 2 is mounted, the mounting surface 4a of the windproof plate 2 is parallel to the wall surface and is perpendicular to the axial direction of the opening 12a.

An insect screen 17 made of stainless steel or rhombus-shaped wire mesh is spot-welded to the surface of the mounting portion 10a of the main body 10 on the duct connection side. In addition, rainwater or drain water flowing from the inner diameter of the connection pipe 13 flows between the attachment portion 10a of the main body and the duct connection portion 14 in a lower portion between the attachment portion 10a of the main body and the flange 14 of the duct connection portion. In order to prevent this, water is fixed so that water flows down from the flow port 7 by sandwiching a waterproof cushion 11 as a sealing means. The waterproof cushion 11 is made of a plate-like urethane foam rubber and is made of a connecting pipe 13.
It has a predetermined width along the inside diameter of the wire mesh, and when attached, it enters into the uneven portion of the wire mesh and closely adheres to fill the gap to prevent water leakage.

The windbreak plate 2 is fixed to the tongue 8a of the support leg 8 of the main body 10 by a ribbed member 16 and has a square outer shape larger than the area of the opening 12a, and rainwater directly enters the opening 12a by the external wind from the front of the opening. I try not to. The outer edge, which is the peripheral edge of the windbreak plate 2, has an edge 3 that is folded in the direction of the wall when attached to the support leg 8 so as not to be injured during handling. In addition, a concave portion 4 is formed in the center of the windbreak plate 2 by drawing so that the bottom portion becomes an attachment surface when attached to the tongue portion 8a of the support leg 8. The size of the plane area of the mounting surface 4a is larger than the area of the opening 12a, and the corner 4c of the plane is formed outside the opening 12a. It has a size such that even if the wind blown out from the opening 12a slightly spreads, it directly hits the plane of the mounting surface 4a. Mounting surface 4 of recess 4 with tongue 8a
A groove 4b is formed between the edge 3a and the edge 3, and the end 3a of the edge 3 is lower than the mounting surface 4a so that the wind passing through the mounting surface 4a does not hit. The outer shape of the windbreak plate 2 may be a round shape, a polygonal shape, or the like as long as it is larger than the area of the opening 12a by design.

In the vent cap constructed as described above, the air discharged from the opening first strikes the mounting surface 4a of the windproof plate 2 in front of the opening, and then the windproof plate along the surface of the mounting surface 4a. It is discharged up and down and left and right from between 2 and the main body 10.
Since the air flowing to the upper part of the main body is provided with the rectifying plate 5 above, the air is constricted at the tip of the rectifying plate 5 and the space 5b near the upper surface of the rectifying plate 5 becomes negative pressure, so that the wind flows into this space Since the air blows upward due to being entangled in 5b and becomes weak, it is possible to prevent the ceiling below the eaves from being stained without reaching the ceiling below the eaves 33.

Also, a throttle 4 is provided at the center of the windbreak plate 2 so that the end 3a of the edge 3 of the windbreak plate is connected to the corner 4 of the mounting surface 4a of the throttle.
c, the wind to be blown out ends 3a.
In this case, the water does not flow toward the wall but flows in parallel with the wall, so that the outer wall around the vent cap can be prevented from being soiled.

Further, since the end 3a is low, there is no contact with wind, and dew condensation does not accumulate on the end 3a, so that icicles can be prevented from occurring. In addition, since high temperature air from the room directly hits the mounting surface 4a, dew condensation occurs slightly immediately after the start of air blowing, but the surface temperature rises immediately and suppresses the occurrence of dew condensation. Does not grow.

Further, since the main body and the supporting legs are integrally formed to fix the windbreak plate, the main body and the duct connecting portion are connected and fixed by providing a dedicated tightening screw on a portion other than the supporting legs, without using a tool. A knob that secures the main unit and the duct connection for inspection, replacement, etc., when the wire mesh becomes dirty and the wire mesh is cleaned during use, or when the fire prevention damper is installed, since it can be operated by hand. The screws can be loosened and removed without using a tool, so there is no need to remove and disassemble the entire vent cap.Furthermore, it can be tightened and fixed by hand when installing, so it is easy to work, the main unit and the duct connection part Since the positional relationship is determined by the thumbscrew, it can be restored to the same position (posture) as before the removal. In particular, since the vent cap is mounted at a high place, the ability to work by hand is an effective structure in terms of workability and safety.

[0024]

According to the present invention, since the main body fixed to the duct connection portion and fixing the windbreak plate is formed integrally with the mounting portion for connecting the duct member to the duct connection portion, the supporting leg for fixing the windbreak plate is formed.
Since the main body can be detached from the duct connection portion without removing the entire vent cap, there is an effect that maintenance such as cleaning and inspection of the wire net can be easily performed.

Also, since the edge of the standing portion of the main body is bent inward and the flow port is provided at the lower portion of the rising portion, rainwater caused by the external wind becomes difficult to enter the opening, and the water that has entered falls from the flow port. This has the effect of not polluting the wall.

Further, since a straightening means is provided above the main body to reduce the upward blow of the wind, the blown wind hardly hits the ceiling, so that the ceiling is not easily stained.

Further, a concave portion serving as a mounting surface is provided in the center of the windbreak plate, and the mounting surface of the concave portion is formed on a plane larger than the opening area of the duct connection portion. It flows along and does not face the wall, so it does not stain the wall.

Further, since the corner of the mounting surface of the support leg in the concave portion of the windshield is higher in the wall direction than the height of the peripheral edge of the windshield, the exhausted wind does not hit the peripheral edge of the windshield and dew condensation occurs. Since icing does not occur, icicles are hardly formed, and since the wind hits the peripheral portion and does not go toward the wall, there is an effect that the wall is not stained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of the present invention.

FIG. 2 is a front view of FIG. 1 of the present invention.

FIG. 3 is a longitudinal sectional view of the present invention.

FIG. 4 is a front view of FIG. 2 of the present invention.

FIG. 5 is a diagram showing a cross section taken along line AA of FIG. 3 of the present invention.

FIG. 6 is a sectional view of a standing portion of the main body of the present invention.

FIG. 7 is a sectional view of a flow port of the main body of the present invention.

FIG. 8 is a vertical sectional view showing a flow of wind of the present invention.

FIG. 9 is a cross-sectional view showing a flow of wind of the present invention.

FIG. 10 is a conventional longitudinal sectional view.

[Explanation of symbols]

2 windbreak board, 3 edge, 4 recess, 5 rectifier,
6 standing part, 7 outlet, 8 support legs, 10 body, 11 waterproof cushion, 12 duct connection,
13 connecting pipe, 14 flange.

Claims (5)

[Claims] 1. A duct connecting portion which is attached to a ventilation opening provided on a wall of a building and has an opening communicating between the room and the outside, and a mounting portion which is attached to an outdoor side of the duct connecting portion. It has an opening communicating with the opening, a main body provided with a plurality of supporting legs around the opening, and a windproof plate attached to the supporting legs of the main body, and the mounting portion and the supporting legs are formed integrally with the main body. A vent cap for ventilation, characterized in that: 2. A stand is provided between the legs of the main body, the edge of the stand is bent inward, and a flow port is provided below the stand when attached to a wall. The vent cap for ventilation according to claim 1, characterized in that: 3. A duct connecting portion which is attached to a ventilation opening provided on a wall of a building and has an opening communicating between the room and the outside, and a mounting portion which is attached to an outdoor side of the duct connecting portion has the duct connecting portion. It has an opening communicating with the opening, and comprises a main body provided with a plurality of legs around the opening, and a windproof plate attached to the legs of the main body, and when attached to a wall, an upper portion of the main body A vent cap for ventilation, characterized in that a rectifying means is provided on the vent cap. 4. A duct connecting portion which is attached to a ventilation opening provided on a wall of a building and has an opening communicating between the room and the outside, and a mounting portion attached to the outdoor side of the duct connecting portion has the duct connecting portion. It has an opening communicating with the opening, a main body having a plurality of supporting legs provided around the opening, and a windproof plate attached to the supporting leg of the main body. A concave portion serving as a surface is provided, a mounting surface of the concave portion is formed in a plane, the size of the plane is larger than an opening area of the duct connection portion, and a corner of the plane is located outside the opening. Vent cap for ventilation characterized by being formed in. 5. The ventilation vent cap according to claim 5, wherein the corner of the mounting surface of the support leg in the concave portion of the windshield is higher in the wall direction than the height of the peripheral edge of the windshield. . [0001]