JP6956217B2 - Ventilation device - Google Patents

Description

The present invention relates to a ventilation device including a ventilation fan.

Patent Document 1 describes, as a ventilation device, a frame body including a cylinder body arranged through the outer wall of a building and an end plate connected to an indoor end portion of the body body, and an end plate of the frame body. A ventilation device including a ventilation fan unit attached to the end plate so as to cover the provided opening and a hood attached to the outdoor side end of the frame is disclosed.

Japanese Unexamined Patent Publication No. 2017-78552

In the ventilation device described in Patent Document 1, when the ventilation fan unit is stopped, air flows from the hood to the ventilation fan unit due to a typhoon or the like, and rainwater flows from the hood to the ventilation fan unit through the frame. It may reach. In addition, the ventilation fan unit may generate water droplets due to condensation. These waters can fall from the ventilator unit and wet the floor or objects underneath it.

An object of the present invention is to provide a ventilation device capable of collecting water falling from a ventilation fan unit.

The ventilation device according to the present invention is a frame body including a cylinder body arranged through the outer wall of a building and an end plate provided with an opening in the center and connected to the indoor side end portion of the cylinder body. A ventilation fan unit attached to the indoor side surface of the end plate so as to cover the opening, and a ventilation fan unit attached to the indoor side surface of the end plate at a position lower than the opening. the drain pan includes projecting inward, and a drain pan arranged below the ventilation fan unit, when viewed from below, and features that you have been arranged so as to overlap at least a portion of the ventilation fan unit do.

According to the ventilation device according to the present invention, the drain pan can catch and collect the water falling from the ventilation fan unit.

It is sectional drawing of the ventilation fan unit which concerns on embodiment. It is an exploded perspective view of a part of the ventilation fan unit of FIG.

Hereinafter, the ventilation device 100 according to the embodiment will be described with reference to the drawings. In each figure, the internal structure of each member is omitted as appropriate. For example, in FIG. 1, the internal structures of the shutter 130, the filter unit 141, and the ventilation fan 142 are omitted, and hatching indicating a cross section is attached to the entire member. Further, a plate material or the like provided inside the weather cover 120 or the like for controlling the air flow is also omitted. Further, in FIG. 2, a portion of the shutter mechanism of the shutter 130 is indicated by dots.

The ventilation device 100 shown in FIG. 1 is fixed to the outer wall 10 in a state of passing through the opening 11 of the outer wall 10 of the building. The outer wall 10 is formed of, for example, an ALC (Autoclaved Lightweight aerated Concrete) panel. The opening 11 of the outer wall 10 is formed in a quadrangular shape.

The ventilation device 100 includes a frame body 110, a weather cover 120, a shutter 130, a ventilation fan unit 140, and a mounting member 150. The ventilation fan unit 140 includes a filter unit 141 and a ventilation fan 142. The ventilation device 100 further includes a drain pan 170 and a drain pipe 180.

The frame body 110 functions as a mounting frame to which the weather cover 120 and the ventilation fan unit 140 are mounted. The frame body 110 is connected to a tubular body 111 arranged so as to penetrate the outer wall 10 and an outdoor side end portion of the tubular body 111, and constitutes an annular flange protruding from the outdoor side end portion of the tubular body 111. The outer end plate 112 and the indoor end plate 113 connected to the indoor side end portion of the tubular body 111 and forming an annular flange extending from the indoor side end portion of the tubular body 111 to the inside of the tubular body 111 are provided. ing.

Here, as shown in FIG. 2, the indoor side end plate 113 is formed in an annular quadrangular shape, and an opening 113A is provided in the center. Similarly, the outdoor side end plate 112 is also formed in an annular quadrangular shape, and an opening 112A is provided in the center. Here, the opening 113A and the opening 112A have a quadrangular shape. The lower portion 113B of the indoor side end plate 113 below the opening 113A is formed wider than the other portion of the indoor side end plate 113. Further, the opening 113A formed by the indoor side end plate 113 is displaced upward with respect to the opening 112A formed by the outdoor side end plate 112. Here, the outdoor side end plate 112 and the indoor side end plate 113 are integrally formed with the tubular body 111 by stainless steel or the like. For example, both ends of the cylinder that is the base of the frame 110 may be bent to form the outdoor side end plate 112 and the indoor side end plate 113. In this case, this bending forms a frame body 110 including a tubular body 111, an outdoor side end plate 112 and an indoor side end plate 113 connected to the tubular body 111. The outdoor side end plate 112 and the indoor side end plate 113 may be formed separately from the tubular body 111 and may be connected to the tubular body 111 by being attached to the tubular body 111.

The tubular body 111 is attached to the outer wall 10 by the attachment member 150 in a state of penetrating the outer wall 10. As shown in FIGS. 1 and 2, the tubular body 111 has a quadrangular cross section. The mounting member 150 is made of L-shaped steel extending in the vertical direction, and is mounted on the side surface of the tubular body 111 by welding, a bottle, or the like. As shown in FIG. 1, the mounting member 150 is fixed to the outer wall 10 by bolts B4. By this fixing, the ventilation device 100 is fixed to the outer wall 10.

As shown in FIG. 1, a weather cover 120 is attached to the outdoor side end plate 112 from the outdoor side by a plurality of bolts B1 and nuts N1. As a result, the weather cover 120 is attached to the outdoor side surface of the outdoor side end plate 112. The weather cover 120 covers the opening 112A formed by the outdoor side end plate 112, and prevents rainwater from entering the frame 110 or indoors.

A shutter 130 and a ventilation fan unit 140 are attached to the indoor side surface of the indoor end plate 113 so as to cover the opening 113A. The shutter 130 and the ventilation fan unit 140 are attached to the indoor end plate 113 from the indoor side by a plurality of bolts B2 and nuts N2 arranged on the upper side and a plurality of bolts B3 and nuts N3 arranged on the lower side. There is. Specifically, the shutter 130 and the filter unit 141 of the ventilation fan unit 140 are attached to the indoor side end plate 113 by bolts B2, B3 and the like. The ventilation fan 142 is attached to the filter unit 141 by a bolt or the like (not shown). The ventilation fan unit 140 is arranged on the outside of the frame 110, that is, on the indoor side.

The shutter 130 opens and closes the air flow path from the weather cover 120 to the ventilation fan 142 via the frame body 110. The ventilation fan 142 is a pressure ventilation fan that takes in outdoor air indoors. The filter unit 141 is arranged between the shutter 130 and the ventilation fan 142 on the indoor side of the shutter 130. The filter unit 141 includes one or more filters for removing dust and the like from the air taken in by the ventilation fan 142, and a case for accommodating the filters.

A gap is formed between the frame body 110 and the inner wall of the opening 11 of the outer wall 10. This gap is sealed by the sealing material 21. The sealing material 21 is backed up by the backup material 22 on the indoor side.

As shown in FIGS. 1 and 2, the position of the lower side of the aperture 113A in the surface of the outdoor side to an indoor side end plate 113, specifically, on the surface of the indoors side of the lower 113B indoor-side end plate 113 Is attached with a dish-shaped drain pan 170. The drain pan 170 is arranged outside the frame body 110, and projects from the indoor side end plate 113 toward the indoor side. The drain pan 170, together with the shutter 130 and the filter unit 141, is fastened to the lower 113B of the indoor side end plate 113 by bolts B3 and nuts N3. The drain pan 170 is arranged under the ventilation fan unit 140, that is, under the filter unit 141 and the ventilation fan 142. Specifically, the drain pan 170 is configured to overlap the filter unit 141 and the ventilation fan 142 when viewed from below. As a result, the drain pan 170 can receive and collect the water described later, particularly water droplets, from the filter unit 141, the ventilation fan 142, and the boundary H thereof. The drain pan 170 overlaps only a part of the ventilation fan 142 on the filter unit 141 side when viewed from below, and it is assumed that the water falling from the ventilation fan 142 falls from the part. Because it is. The drain pan 170 may have a shape that covers all of the ventilation fan 142 when viewed from below.

The drain pan 170 includes a drain port 171 for draining the received water droplets. The bottom of the drain pan 170 descends toward the drain port 171 so that the received water flows toward the drain port 171.

One end of the drainage pipe 180 is connected to the drain pan 170, and the other end is connected to the lower part 113B of the indoor side end plate 113, forming a drainage channel K that connects the drainage port 171 and the inside of the frame 110. The drain pipe 180 includes a drain tube 181 and a nipple 182. One end of the drain tube 181 made of a rubber hose or the like is connected to the lower cylindrical portion 172 forming the drain port 171 of the drain pan 170. The other end of the drain tube 181 is connected to the nipple 182. The nipple 182 is connected to the lower part 113B through the through hole 115 provided on the lower side of the portion where the drain pan 170 is attached in the lower part 113B of the indoor side end plate 113. The nipple 182 includes a main body 182A and a retaining nut 182B. The nipple 182 is connected to the lower 113B by inserting the main body 182A into the through hole 115 from the indoor side and screwing the inserted main body 182A with the retaining nut 182B across the periphery of the through hole 115 of the lower 113B. ing. The drain tube 181 and the nipple 182 form a drainage channel K that communicates the drainage port 171 and the inside of the frame 110. The drain pipe 180 allows water from the drain port 171 of the drain pan 170 to flow to the frame 110.

In the frame body 110, a surface of the inner bottom surface of the frame body 110 that is connected to the lower portion 113B of the indoor side end plate 113, particularly a surface that is arranged on the indoor side of the outer wall 10 from the indoor side to the outdoor side. It is an inclined surface 114 that descends toward it. Therefore, the water flowing through the drain pipe 180 can easily flow to the outdoor side due to the inclined surface 114.

Although the ventilation device 100 includes a weather cover 120, rainwater may enter the inside of the frame 110 from the weather cover 120 due to a typhoon or the like and reach the filter unit 141 and the ventilation fan 142 of the ventilation fan unit 140. .. In this case, rainwater is accumulated in the filter unit 141 and the ventilation fan 142, and the rainwater is collected from the holes originally provided in the filter unit 141 and the ventilation fan 142 or from the boundary H between the filter unit 131 and the ventilation fan 142. It falls as water droplets. In addition, water caused by dew condensation generated on the filter unit 141 and the ventilation fan 142 may fall as water droplets. In this embodiment, as shown by the arrow R in FIG. 1, the water falling from the filter unit 141 and the ventilation fan 142, that is, the ventilation fan unit 140 is collected by the drain pan 170 and passed through the drainage channel K of the drain pipe 180. Then, it is discharged to the inside of the frame body 110. The water discharged to the inside of the frame body 110 goes down the inclined surface 114, and finally passes through the inside of the weather cover 120 and is discharged to the outside.

As described above, the ventilation device 100 has a tubular body 111 that is arranged so as to penetrate the outer wall 10 of the building, and an indoor side end that is provided with an opening 113A in the center and is connected to the indoor side end portion of the tubular body 111. A frame body 110 including a plate 113 and a plate 113 is provided. Further, the ventilation device 100 includes a ventilation fan unit 140 attached to the indoor side surface of the indoor side end plate 113 so as to cover the opening 113A, and an indoor side of the indoor side end plate 113 at a position below the opening 113A. It is provided with a drain pan 170 which is attached to a surface and projects from the indoor side end plate 113 toward the indoor side and is arranged under the ventilation fan unit 140. With such a configuration, the water falling from the filter unit 141 of the ventilation fan unit 140 and the ventilation fan unit 140 is received and collected by the drain pan 170, so that the water falling from the ventilation fan unit 140 falls to the indoor floor or an object. It is difficult to prevent water droplets from the ventilation fan unit 140 from getting wet on the floor or an object indoors. Further, since the ventilation fan unit 140 and the drain pan 170 are attached to the indoor side end plate 113, the drain pan 170 can be easily formed. In particular, in this embodiment, since the width of the lower portion 113B of the indoor side end plate 113 in the vertical direction is widened, an area for attaching the drain pan 170 can be secured, and the drain pan 170 can be arranged under the ventilation fan unit 140.

Further, the drain pipe 180 allows the water collected by the drain pan 170 to be discharged into the frame 110, which saves the trouble of separately removing the water stored in the drain pan 170.

Further, the inclined surface 114 of the frame body 110 allows the water from the drain pipe 180 to efficiently flow to the outdoor side, particularly to the weather cover 120 side. Therefore, the efficiency of drainage to the outside is improved. Although the entire bottom surface of the frame body 110 may be inclined surfaces, as shown in FIG. 1, of the cylindrical body 111, the bottom surface 116 of the inclined surface 114 Yorimoya out side, the inner wall surface of the opening 11 of the outer wall 10 It should be parallel, that is, horizontal. As a result, the bottom plate of the tubular body 111 constituting the bottom surface 116 can be made parallel to the inner wall surface of the opening 11, and a sealing mechanism such as a sealing material 21 or a backup material 22 can be easily formed.

Further, since the drain pan 170 is fastened to the indoor side end plate 113 of the frame body 110 together with the shutter 130 and the filter unit 141 by the bolt B3, the fixture dedicated to the drain pan 170 becomes unnecessary. In this way, the drain pan 170 is fastened to the indoor side end plate 113 of the frame 110 together with another member of the ventilation device 100 by a fastener such as a bolt B3, so that a fastener dedicated to the drain pan 170 is unnecessary. Therefore, the number of parts of the ventilation device 100 can be reduced. The drain pan 170 may be fastened to the indoor side end plate 113 together with the members constituting the ventilation fan unit 140 such as the filter unit 141 in the ventilation fan unit 140. Thereby, the workability of the drain pan 170 and the ventilation fan unit 140 can be improved. Further, the drain pan 170 can be brought close to the ventilation fan unit 140, and the water from the ventilation fan unit 140 can be collected accurately by the drain pan 170.

The structure of the ventilation device 100 and the like can be changed as appropriate.

For example, the filter unit 141 may be omitted. That is, the ventilation fan unit 140 may consist of only the ventilation fan 142. Further, the ventilation fan unit 140 may include at least a ventilation fan 142, and may include a member other than the filter unit 141. The ventilation fan unit 140 includes the ventilation fan 142 and is attached directly to the indoor side surface of the indoor side end plate 113 or via another member such as a shutter 130 so as to cover the opening 113A of the indoor side end plate 113. It may be a combination of one or a plurality of devices. The drain pan 170 does not have to have the drain port 171 and the drain pipe 180 may be omitted. In this case, it is necessary to discard the water stored in the drain pan 170, but the drain pan 170 can collect the water that has fallen from the ventilation fan unit 140 and prevent the water from falling on the floor or the like indoors. The other end of the drain pipe 180 may be connected to something other than the frame 110. The ventilation fan 142 may be a ventilation fan that exhausts indoor air to the outside. Even in this case, it is effective to provide the drain pan 170 because rainwater may flow back toward the ventilation fan unit 140 due to a wind such as a typhoon and water may fall from the ventilation fan unit 140. Backflow of rainwater is likely to occur, for example, when the ventilation fan unit 140 is stopped. The weather cover 120 may be omitted, and an appropriate member may be attached to the outdoor end of the frame 110. The opening 113A provided in the indoor side end plate 113 may be at the center, and may be at another position in addition to the position shown in FIG. 2 and the like. The "center" where the opening 113A is provided may be a wide range other than the end of the indoor side end plate 113.

10 outer wall, 11 openings, 21 sealing material, 22 backup material, 100 ventilation system, 110 frame, 111 cylinder, 112 outdoor side end plate, 113 indoor side end plate, 112A, 113A opening, 113B lower part, 114 inclined surface, 115 through hole, 116 bottom, 120 weather cover, 130 shutter, 140 ventilation fan unit, 141 filter unit, 142 ventilation fan, 150 mounting member, 160 fixing member, 170 drain pan, 171 drain port, 172 cylindrical part, 180 drain pipe, 181 drain Tube, 182 nipple, 182A main body, 182B retaining nut, B1 to B4 bolt, H boundary, K drainage channel, N1 to N3 nut.

Claims (4)

A frame having a cylinder arranged through the outer wall of the building and an end plate having an opening in the center and connected to the indoor end of the cylinder.
A ventilation fan unit attached to the indoor side surface of the end plate so as to cover the opening,
A drain pan attached to the indoor side surface of the end plate at a position lower than the opening, projecting from the end plate toward the indoor side, and arranged under the ventilation fan unit.
With
The drain pan, when viewed from below, ventilator, characterized that you have been arranged so as to overlap at least a portion of the ventilation fan unit. One end is connected to the drain pan, and the other end is connected to the end plate at a position lower than the portion to which the drain pan is attached, so that the drain port provided in the drain pan and the inside of the frame are connected to each other. Further equipped with a drainage pipe for communication,
The ventilation device according to claim 1. A surface of the inner bottom surface of the tubular body arranged on the indoor side of the outer wall includes an inclined surface that descends from the indoor side toward the outdoor side.
The ventilation device according to claim 2. The ventilation fan unit has a ventilation fan and a filter unit.
The ventilation fan is attached to the indoor side surface of the end plate of the frame body via the filter unit.
The ventilation device according to any one of claims 1 to 3.

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