JP2004045009A - Ventilation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation apparatus having high back-flow preventing performance for preventing the outside air from flowing into a room, that is, preventing the back-flow caused by the dynamic pressure of the air flowing outside of the room, without increasing a rating of a fan. <P>SOLUTION: This ventilation apparatus is mounted on an outdoor-side opening 2b of a ventilation pipe 2 communicating an indoor side and an outdoor side. This ventilation apparatus comprises a base part 25 widened along an outer wall 4, a front plate part 40 covering the outdoor-side opening 2b of the ventilation pipe 2 from an outer front face, a top plate part 42 covering the outdoor-side opening 2b from an upper part, and a bottom plate part 44 covering the outdoor-side opening 2b from a lower part. A space 20a faced to the outdoor-side opening 2b is defined by the top plate part 42 and the front plate part 40. The ventilation apparatus has vertical passage wall face parts 46 forming vertically-opened passages 20b at left and right end parts, the pair of vertical passages 20b are communicated to the space 20a, and an approximately H-type ventilation passage is formed by the space 20a and the left and right pair of vertical passages 20b. The base part 25 and the front plate part 40 are separately formed in this ventilation apparatus. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a ventilating device installed outdoors for discharging indoor air.
[0002]
[Prior art and its disadvantages]
In this type of ventilation device, an electric fan (ventilation fan) for discharging indoor air is provided.
However, under the influence of the dynamic pressure of air flowing outside, the outside air may flow into the room, that is, may flow backward.
On the other hand, in order to prevent backflow, it is necessary to increase the rating of the fan.
[0003]
Therefore, an object of the present invention is to provide a ventilation device having high backflow prevention performance capable of preventing backflow without increasing the rating of the fan.
[0004]
[Summary of Invention for Solving the Problems]
In order to achieve the above object, the present invention provides a ventilation pipe for communicating between an indoor side and an outdoor side, and in a ventilation device provided at an outdoor side opening of the ventilation pipe, the ventilation device extends along an outer wall. A base plate that covers the outdoor opening of the ventilation pipe from the outside front, a top plate that covers the outdoor opening from above, and a bottom plate that covers the outdoor opening from below. A space facing the outdoor opening of the ventilation pipe is formed by the bottom plate, the top plate, and the front plate.
The ventilating device has upper and lower passage wall portions forming upper and lower passages that open up and down at left and right ends, and the pair of upper and lower passages is connected to the space, and the space and the left and right pair of upper and lower A substantially H-shaped ventilation passage is formed with the passage, and the base portion and the front plate portion are formed separately.
[0005]
The ventilation passage of the ventilation device of the present invention is formed in an H-shape. When the outside air flows sideways along the outer wall, the outside air sucks out the air in the up and down passage, so that the outside air flows backward and flows in. Can be prevented.
On the other hand, when the outside air flows up and down along the outer wall and passes through the up / down passage, the air in the space facing the outdoor opening is sucked into the up / down passage, so that it is possible to prevent the outside air from flowing in reverse.
[0006]
Further, in the present invention, since the base portion and the front plate portion forming the H-shaped ventilation passage are separate bodies, the ventilation device can be easily molded with resin and mass-produced at low cost. And the work of attaching the base portion becomes easy.
If the pedestal has a flat surface along the outer wall, not only is it easy to attach the pedestal to the outer wall, but also it is easy to insert sealing packing or heat insulating material between the pedestal and the outer wall, so that the mounting is stable. Properties, sealing properties and heat insulating properties can be improved.
[0007]
It is preferable that a guide portion that bulges in a mountain shape toward the space is provided on the front plate portion. The air flows from the room through the ventilation pipe to the space by the ventilation fan, and the air is led out to the left and right up and down passages by the guide portion and discharged. Therefore, the exhaust is smooth.
[0008]
In addition, if the tips of the upper and lower passage wall portions of the outdoor hood are inserted into the groove-shaped fitting portion of the pedestal, even if the pedestal and the outdoor hood are separate bodies, the air flow is less likely to be disturbed, There is no adverse effect.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 7A show a first embodiment of the present invention.
As shown in FIGS. 1 and 2, the ventilation device includes a ventilation pipe 2, an electric fan 3, and a ventilation device 1. The ventilation pipe 2 is provided so as to penetrate the inner wall 5, the ventilation layer 8, and the outer wall 4, and connects the indoor I and the outdoor O. An electric fan 3 is provided at an indoor opening 2a of the ventilation pipe 2, and a main ventilation device 1 is provided at an outdoor opening 2b of the ventilation pipe 2. As will be described later, the air A in the room I is sent into the ventilation pipe 2 by the electric fan 3 and discharged from the ventilation device 1 to the outside O.
The outdoor side of the ventilation pipe 2 is a protruding portion 2 c protruding from the outer wall 4.
[0010]
The ventilation device 1 includes a pedestal 22 and an outdoor hood 20 that are separate from each other. As shown in FIGS. 3 and 4, an annular outer fitting portion 24 and a base portion 25 which are fitted on the outer periphery of the projecting portion 2c (FIG. 1) are integrally formed on the pedestal 22. The base portion 25 is formed integrally around the outer fitting portion 24 and is formed so as to extend along the outer wall 4.
On the outer wall mounting side 25a of the base portion 25, a groove 26 for mounting packing is provided. The groove 26 is formed in the shape of a rectangular frame that extends around the outer fitting portion 24 over substantially the entire circumference. As shown in FIG. 2, the groove 26 is provided with a foam resin or foam rubber (packing) 32. The packing 32 has an adhesive material on both surfaces, and has a rectangular cross section.
[0011]
The pedestal 22 in FIG. 3B has a plurality of insertion holes 27 for fixing the pedestal 22 to the outer wall 4. A fastener (not shown) such as a screw is inserted into the insertion hole 27, and the pedestal 22 is fixed to the outer wall 4 as shown in FIGS.
Here, the packing 32 inserted between the pedestal 22 and the outer wall 4 is compressed by the fastening force of the fastener, so that the space between the pedestal 22 and the outer wall 4 becomes the entire circumference around the ventilation pipe 2. Sealed over.
The outer periphery of the groove 26 is filled with a caulking material 30. By filling the caulking material 30, the space between the outer wall 4 and the pedestal 22 is sealed, and the waterproofness can be further improved.
[0012]
On the other hand, an adhesive resin tape 34 made of, for example, butyl tape is stretched over the outer fitting portion 24 of the pedestal 22 and the projecting portion 2c of the ventilation pipe 2 so that the outer fitting is performed. The space between the portion 24 and the protrusion 2c is sealed.
[0013]
As shown in FIG. 5, the outdoor hood 20 has a front plate portion 40, a top plate portion 42, and a bottom plate portion 44. As shown in FIG. 2, the front plate portion 40 covers the outdoor opening 2b of the ventilation pipe 2 from the front outside. The top plate portion 42 and the bottom plate portion 44 cover the outdoor opening 2b from above and below, respectively. Therefore, the front plate portion 40, the top plate portion 42, and the bottom plate portion 44 form a space 20a facing the outdoor side opening 2b.
[0014]
On the other hand, the outdoor hood 20 of FIG. 5 has upper and lower passage wall portions 46 at left and right ends. The up / down passage wall portion 46 forms an up / down passage 20b that opens vertically. The pair of vertical passages 20b communicates with the space 20a. As shown in FIGS. 6C and 7A, the space 20a and the vertical passage 20b form a substantially H-shaped ventilation passage.
[0015]
The outdoor hood 20 is provided with a pair of throttle plates 49, 49 between the space 20a and the vertical passage 20b. The throttle plate portion 49 protrudes along the vertical plane from the front plate portion 40, the top plate portion 42, and the bottom plate portion 44, and is for approximating the shape of the ventilation passage substantially to an H-shape. It has a notch 49a.
[0016]
In FIG. 7A, when the outside air flows in the horizontal direction H along the outer wall, the air in the vertical passage 20b is sucked upward and / or downward from the vertical passage 20b. Therefore, there is no possibility that the outside air flows backward and flows into the room.
[0017]
On the other hand, when the outside air flows in the up-down direction V along the outer wall and passes through the up / down passage 20b, the air in the space 20a is sucked out from the notch portion 49a into the up / down passage 20b. Therefore, there is no possibility that the outside air flows backward and flows into the room.
[0018]
As shown in FIG. 5, the front plate portion 40 is formed with a guide portion 40a that smoothly and swells toward the space 20a. The guide portion 40a is formed to be long in parallel with the vertical passage 20b along a vertical line.
As shown in FIG. 1, after the air A in the room I is sent into the ventilation pipe 2 by the electric fan 3, the air A is led out to the space 20a of the outdoor hood 20, and the air A in the right and left along the chevron guide 40a. After being distributed to the up-and-down passage 20b, it is discharged from the up-and-down passage 20b in FIG. 5B to the outside O (FIG. 1). Therefore, the flow of the exhaust gas is smooth.
[0019]
The end portions of the aperture plate portion 49 and the upper and lower passage wall portions 46 are inserted into groove-shaped fitting portions 56, 57, and 58 provided on the front side of the pedestal 22 shown in FIG. I have.
[0020]
Next, the procedure for mounting the ventilation device of the present invention will be described.
The ventilation pipe 2 is made to project outside from the finished surface of the outer wall 4 in advance. Then, the outer fitting portion 24 of the pedestal 22 is fitted to the outer periphery of the projecting portion 2c of the ventilation pipe 2. At this time, the packing 32 is previously mounted in the groove 26 provided in the pedestal 22. In this state, a fastener is inserted into the insertion hole 27 provided in the base portion 25 to fix the pedestal 22 to the outer wall 4. After the fixing, the caulking material 30 is filled between the outer wall 4 and the pedestal 22. On the other hand, a butyl tape 34 is wound around the ventilation pipe 2 and the outer peripheral surface of the pedestal 22. In this way, the waterproof and airtight treatment between the outer wall 4 and the pedestal 22 and between the pedestal 22 and the ventilation pipe 2 can be easily and reliably performed outside the outer wall 4.
[0021]
After the completion of the waterproof and airtight treatment, the outdoor hood 20 is attached. The screw inserted into the mounting hole 52 (FIG. 6D) provided in the vertical passage wall surface portion 46 of the outdoor hood 20 is screwed into the screw hole 54 (FIG. 4E) provided in the pedestal 22. To conclude. As described above, since the outdoor hood 20 and the pedestal 22 are screwed, the outdoor hood 20 can be easily attached to the pedestal 22.
[0022]
In the ventilation device of the present invention, the base portion 25 and the front plate portion 40 may be formed separately, and the throttle plate portion 49 or the upper and lower passage wall portion 26 may be connected to the base portion 25 or the front plate portion. 40 may be formed. For example, as in the second embodiment shown in FIG. 7B, the throttle plate 49 and a part of the vertical passage wall 26 may be formed integrally with the base 25.
[0023]
Also, it is not always necessary to provide the throttle plate portion 49, and the outdoor hood 20 itself is formed in a substantially H-shape as in the third embodiment in FIG. You may make it.
[0024]
As shown in FIG. 9, the outdoor hood 20 according to the present invention may be provided with a groove 49 b for mounting an insect / bird-proof net (not shown) on the side surface of the throttle plate 49. Good. Further, a guided portion 46a protruding toward the up / down passage 2b may be provided at a distal end portion of the up / down passage wall portion 46 of the outdoor hood 20. If a guide groove (not shown) is provided in the pedestal 22 of FIG. 3A and the guided portion 46a is slidable in the vertical direction, the installation of the outdoor hood 20 is simplified, and the workability can be further improved. .
[0025]
As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will easily envisage various changes and modifications within the obvious scope upon reading this specification.
For example, in the above-described embodiment, the main ventilation device is formed of two parts (the pedestal and the outdoor hood), but the main ventilation device may be configured of three or more parts. The ventilation device may be formed of metal instead of synthetic resin.
Further, the electric fan on the indoor side does not always need to be provided.
[0026]
Furthermore, in the present invention, the ventilation pipe 2 does not need to penetrate the outer wall 4. For example, the structure may be such that the ventilation pipe 2 is divided into two in the length direction, or a part of the pedestal 22 may constitute a part of the ventilation pipe.
Further, when the ventilation pipe is divided into two and a part of one of the ventilation pipes is provided on the pedestal, the sealing may be performed between the two ventilation pipes.
[0027]
Further, the sealing material for sealing between the ventilation pipe and the pedestal is not limited to butyl tape, and the sealing may be performed by rubber packing or caulking material. Further, a solid rubber with a lip may be used instead of the sponge rubber for the seal between the outer wall and the base portion. Accordingly, such changes and modifications are to be construed as falling within the scope of the invention.
[0028]
【The invention's effect】
As described above, in the present invention, the up-and-down passage is provided at the left and right ends of the outdoor hood, and the space facing the outdoor opening of the ventilation pipe and the pair of left and right up-and-down passages form a generally H-shaped ventilation passage. Has formed. That is, the upper part of the outdoor side opening of the ventilation pipe is covered with the top plate portion. Therefore, outdoor wind and rain can only pass up and down the vertical passage, so that the wind and rain hardly enter the inside of the ventilation pipe.
Further, since the ventilation passage has an H-shape, an effect of sucking indoor air by the flow of the outside air can be obtained regardless of the direction of the flow of the outside air. Therefore, it is possible to prevent outside air from flowing into the room (backflow) without increasing the rating of the ventilation fan.
Further, in the ventilation device of the present invention, since the base portion and the front plate portion are separate bodies, each member can be easily molded with resin. Therefore, it can be mass-produced at a low manufacturing cost.
[Brief description of the drawings]
FIG. 1 is a plan sectional view showing a first embodiment of a ventilation device according to the present invention.
FIG. 2 is a longitudinal sectional view of the same.
FIG. 3 is a perspective view showing a pedestal of the ventilation device according to the present invention.
4A is a plan view showing the pedestal, FIG. 4B is a front view, FIG. 4C is a bottom view, FIG. 4D is a rear view, and FIG.
FIG. 5 is a perspective view showing an outdoor hood of the ventilation device according to the present invention.
6A is a front view of the outdoor hood, FIG. 6B is a bottom view, FIG. 6C is a cross-sectional view, and FIG. 6D is a side view.
FIG. 7A is a schematic perspective view in which a part of an outdoor hood for showing an H-shaped ventilation passage is cut away, and FIG. 7B is a schematic exploded perspective view showing a second embodiment of a ventilation device. .
FIG. 8 is a schematic exploded perspective view showing a third embodiment of the ventilation device according to the present invention.
FIG. 9 is a schematic perspective view of an outdoor hood showing a fourth embodiment.
[Explanation of symbols]
1: ventilation equipment 2: ventilation pipe 4: outer wall 8: ventilation layer 20: outdoor hood 20b: up / down passage 22: pedestal 25: base A: indoor air I: indoor O: outdoor

Claims (7)

A ventilation pipe is provided for communicating between the indoor side and the outdoor side, and in a ventilation device provided at an outdoor side opening of the ventilation pipe,
The ventilation device includes a base portion that extends along an outer wall, a front plate portion that covers an outdoor opening of the ventilation pipe from the outside front, a top plate portion that covers the outdoor opening from above, A bottom plate portion that covers the opening from below, and a space facing the outdoor side opening of the ventilation pipe is formed by the bottom plate portion, the top plate portion, and the front plate portion,
The ventilation device has upper and lower passage wall portions at upper and lower ends forming upper and lower passages that open vertically, and the pair of upper and lower passages is connected to the space,
A substantially H-shaped ventilation passage is formed by the space and the pair of left and right passages.
A ventilation device in which the base portion and the front plate portion are formed separately. A ventilation pipe is provided for communicating between the indoor side and the outdoor side, and in a ventilation device provided at an outdoor side opening of the ventilation pipe,
The ventilation device includes a pedestal and an outdoor hood separate from each other,
The pedestal includes a base portion extending along an outer wall,
The outdoor hood includes a front plate that covers an outdoor opening of the ventilation pipe from the outside front, a top plate that covers the outdoor opening from above, and a bottom plate that covers the outdoor opening from below. A space facing the outdoor opening of the ventilation pipe is formed by the bottom plate portion, the top plate portion and the front plate portion,
The outdoor hood has upper and lower passage wall portions at upper and lower ends forming upper and lower passages that open vertically, and the pair of upper and lower passages is continuous with the space,
A ventilation device in which the space and the pair of left and right upper and lower passages form a substantially H-shaped ventilation passage. The ventilation device according to claim 1 or 2,
A ventilation device, wherein the front plate portion is provided with a guide portion which swells smoothly and in a mountain shape toward the space, and the guide portion is provided in parallel with the vertical passage. The ventilation device according to claim 1 or 2,
A ventilation device, wherein a throttle plate portion is provided between the space and the vertical passage so that the shape of the ventilation passage is substantially H-shaped. The ventilation device according to claim 2,
Between the space and the up / down passage, a throttle plate portion projecting from the front plate portion, the top plate portion, and the bottom portion is provided on the outdoor hood so that the shape of the ventilation passage is substantially H-shaped. A ventilation device that is integrally formed. The ventilation device according to claim 2 or 5,
A ventilating device provided with a groove-shaped fitting portion on the front side of the pedestal, into which a tip of the wall portion of the vertical passage of the outdoor hood is inserted. In any one of claims 1 to 6,
The ventilation device, wherein the pedestal has a flat surface along an outer wall.

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