JP2016161145A - Ventilation terminal component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation terminal component that restricts the increase of a pressure loss caused by a gallery.SOLUTION: This invention relates to a ventilation terminal component covering a ventilation port formed at a wall surface, comprising: a wall surface opposing part formed with an opening communicated with the ventilation port and showing a plate-like shape opposing against the wall surface; a cover covering the opposite surface side of the wall surface in the wall surface opposing part with its lower part being released as a ventilation port; a cutwater plate placed below the ventilation port, arranged at the lower part of the wall surface opposing part and having a slant surface spaced apart from the wall surface as it goes downward; and a gallery 14 having an annular part 141 fitted into the ventilation port. An outer circumferential edge abutting against the cover of the annular part 141 of the gallery 14 is formed with an induction part 143 bent downward.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a ventilation terminal part attached to a ventilation port formed on a wall surface.

  On the wall surface of the house, a ventilation port is formed for taking air into the house or discharging the air inside the house. A ventilation duct or a ventilation device extending toward the indoors is connected to the indoor side of the ventilation opening. Further, a ventilating terminal component as shown in Patent Document 1 is attached to the outdoor side of the ventilation port for the purpose of preventing rainwater and small animals from entering the room.

JP 11-281112 A

  The ventilation terminal component has an opening communicating with the ventilation opening formed on the wall surface, and a wall-facing portion that has a plate shape facing the wall surface, and the opposite side of the wall surface of the wall facing portion is ventilated downward. Generally, it is configured to include a cover that is opened and covered as a mouth. Moreover, in order to suppress the invasion of the small animal from a vent hole, a louver is attached to the ventilation terminal part. Since the galley blocks a part of the ventilation opening, there is a demand to suppress the increase in pressure loss due to the galley as much as possible.

  This invention is made | formed in view of the above, Comprising: It aims at obtaining the ventilation terminal component which suppressed the increase in the pressure loss by a louver.

  In order to solve the above-described problems and achieve the object, the present invention is a ventilation terminal part that covers a ventilation port formed on a wall surface, and is provided with an opening that communicates with the ventilation port and facing the wall surface. A wall-facing portion having a shape, a cover that covers and opens the opposite surface of the wall-facing portion as a ventilation opening, and is provided below the ventilation opening and below the wall-facing portion. A draining plate having an inclined surface that departs from the wall surface as it goes downward, and a louver having an annular part that is fitted into the ventilation port. An attracting part that is bent into two is formed.

  According to the ventilation terminal component according to the present invention, there is an effect that it is possible to suppress an increase in pressure loss due to the louver.

The front view of the ventilation terminal component concerning Embodiment 1 of this invention It is side surface sectional drawing of the ventilation terminal component concerning Embodiment 1, Comprising: The figure which shows the state attached to the wall surface It is side surface sectional drawing of the ventilation terminal component concerning Embodiment 1, Comprising: The elements on larger scale which expanded the A section shown in FIG. The perspective view of the draining board in Embodiment 1 Front view of draining board in the first embodiment It is sectional drawing of the draining board in Embodiment 1, Comprising: Arrow sectional drawing seen along CC line shown in FIG. It is sectional drawing of the draining board in Embodiment 1, Comprising: Arrow sectional drawing seen along the DD line | wire shown in FIG. The perspective view of the louver in Embodiment 1 Cross-sectional view taken along line EE shown in FIG. The figure explaining the attachment method of the louver in Embodiment 1 Partial expanded sectional view which expanded the B section shown in FIG. The figure which shows the pressure distribution in the ventilation port part of the ventilation terminal component concerning Embodiment 1. FIG. The figure which shows the pressure distribution in the ventilation port part of the ventilation terminal part concerning a comparative example The figure which shows the example which provided the fire prevention damper in the insertion part of the ventilation terminal component concerning Embodiment 1. The figure which shows the example which applied the insect repellent net instead of the louver in the ventilation terminal component concerning Embodiment 1 The perspective view of the draining board concerning the modification of Embodiment 1

  Below, the ventilation terminal component concerning embodiment of this invention is demonstrated in detail based on drawing. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a front view of a ventilation terminal component according to Embodiment 1 of the present invention. FIG. 2 is a side cross-sectional view of the ventilation terminal component according to the first embodiment and shows a state where the ventilation terminal component is attached to a wall surface.

  A ventilation duct 3 extending from the indoor side is inserted into a ventilation opening 2a formed in the wall surface 2. For example, a ventilation device is connected to the other end of the ventilation duct 3 opposite to the one end inserted into the ventilation port 2a. The ventilation terminal component 1 is used by being fitted into a ventilation port 2a formed on the wall surface 2 of the house from the outdoor side. Through the ventilation duct 3, the ventilation opening 2a, and the ventilation terminal component 1, indoor air is discharged to the outside or outdoor air is taken into the indoor.

  The ventilation terminal component 1 includes a base plate 11 in which an opening 11a communicating with the ventilation port 2a is formed. The base plate 11 is a wall surface facing portion that has a plate shape facing the wall surface 2. In the following description, the wall surface 2 side with respect to the base plate 11 is a back surface side, and the opposite surface side is a surface side.

  In the opening 11 a portion of the base plate 11, an insertion portion 11 b that protrudes from the back surface and is inserted into the ventilation port 2 a or the ventilation duct 3 is formed. The insertion portion 11b is formed in a shape that matches the shape of the ventilation port 2a or the ventilation duct 3, and is generally formed in a cylindrical shape. On the outer periphery of the insertion portion 11b, a retaining metal fitting 11c is formed for preventing a dropout from the ventilation port 2a or the ventilation duct 3.

  The ventilation terminal component 1 includes a cover 12 that covers the surface side of the base plate 11. The cover 12 is opened downward as a ventilation opening 12a. The ventilation opening 12a is provided in the position which becomes lower than the ventilation opening 2a. Through this ventilation port 12a, indoor air is discharged outdoors, or outdoor air is taken indoors. The cover 12 is fixed to the base plate 11 with rivets.

  The lower end of the cover 12 that forms the ventilation hole 12 a is formed so as to become lower toward the tip away from the base plate 11. As a result, when rainwater that has fallen on the cover 12 reaches the lower end of the cover 12, it is guided to the tip and easily falls from a position away from the wall surface 2.

  A louver 14 is attached to the ventilation opening 12a. The louver 14 is attached so that the front end side away from the base plate 11 is lowered, like the ventilation opening 12a. Thereby, the water adhering to the louver 14 is guided to the tip and easily falls from a position away from the wall surface 2. Moreover, since it becomes difficult for water to stay in the louver 14, it is possible to prevent water from entering the indoors by being caught in the air sucked into the indoors.

  A draining plate 13 is provided below the ventilation opening 12 a and below the base plate 11. The draining plate 13 is formed with an inclined surface 13a toward the ventilation port 12a. The inclined surface 13a inclines so that it may leave | separate from the wall surface 2 as it goes below.

  Next, the detailed structure around the draining plate 13 of the ventilation terminal component 1 will be described. FIG. 3 is a side cross-sectional view of the ventilation terminal component 1 according to the first embodiment, and is a partial enlarged cross-sectional view in which a portion A shown in FIG. 2 is enlarged. In FIG. 2, illustration of the louver 14 and the cover 12 is omitted.

  As shown in FIG. 3, the base plate 11 is divided into an upper facing portion 21 and a lower facing portion 22 provided below the upper facing portion 21. Although not shown in FIG. 3, the opening 11 a and the insertion portion 11 b are formed in the upper facing portion 21.

  The upper part of the lower facing part 22 is inserted into the back side of the upper facing part 21. The lower facing portion 22 and the upper facing portion 21 are coupled by rivets. Further, the draining plate 13 is formed in a portion of the lower facing portion 22 that is exposed below the upper facing portion 21. With this configuration, the water flowing down on the surface of the base plate 11 does not flow on the back surface of the base plate 11 but easily flows on the inclined surface 13 a of the draining plate 13.

  Next, the detailed configuration of the draining plate 13 including the lower facing portion 22 will be described. FIG. 4 is a perspective view of the draining plate 13 in the first embodiment. FIG. 5 is a front view of the draining plate 13 in the first embodiment.

  The draining plate 13 is formed with a larger width than the cover 12 (see also FIG. 1). The draining plate 13 includes a central portion 131 located in the center in the width direction, an avoiding portion 132 located on both sides of the central portion 131, and an end portion 133 located on the opposite side of the central portion 131 across the avoiding portion 132. Have.

  6 is a cross-sectional view of the draining plate 13 according to the first embodiment, and is a cross-sectional view taken along the line CC shown in FIG. 7 is a cross-sectional view of the draining plate 13 in the first embodiment, and is a cross-sectional view taken along the line DD shown in FIG. FIG. 6 shows a cross section of the central portion 131, and FIG. 7 shows a cross section of the avoidance portion 132.

  As shown in FIGS. 6 and 7, the horizontal distance (front-rear distance) X2 between the front end of the avoiding part 132 and the base plate 11 is larger than the horizontal distance (front-rear distance) X1 between the front end of the central part 131 and the base plate 11. Is smaller. Although not shown in the cross section, the distance in the horizontal direction between the tip of the avoiding part 132 and the base plate 11 is smaller than the distance in the horizontal direction between the tip of the end 133 and the base plate 11. In addition, the inclination of the inclined surface 13a in the avoiding portion 132 is gentler than the inclination of the inclined surface 13a in the central portion 131 and the end portion 133.

  Further, the steep slope portion 134 between the central portion 131 and the avoidance portion 132 and between the avoidance portion 132 and the end portion 133 is steeper than the inclined surface 13a of the central portion 131, the avoidance portion 132, and the end portion 133. It is connected with. The draining plate 13 having such a shape may be formed by drawing a metal plate or may be formed by resin molding.

  The lower facing portion 22 is formed with an insertion hole 15 into which an insertion piece formed in the gallery 14 described later is inserted. The insertion hole 15 is formed at a position avoiding the upper portion of the central portion 131 in front view, more specifically, at a position above the avoiding portion 132. The insertion hole 15 has a wider width at the top and a narrow width at the bottom.

  On the surface side of the lower facing portion 22, a groove 16 extending vertically is formed between the insertion holes 15, more specifically, above the central portion 131. The groove 16 is formed from the upper end of the lower facing portion 22 to a portion exposed below the upper facing portion 21 in a state where the lower facing portion 22 is inserted into the back side of the upper facing portion 21.

  A lateral flow preventing portion 135 protruding upward is formed at a side end portion of the draining plate 13. The lateral flow prevention unit 135 can prevent the water flowing on the draining plate 13 from flowing down to the side and soiling the wall surface 2.

  Next, the configuration of the gallery 14 will be described. FIG. 8 is a perspective view of the gallery 14 in the first embodiment. 9 is a cross-sectional view taken along the line EE shown in FIG.

  The gallery 14 has an annular shape 141 along the inner periphery of the ventilation opening 12a, and has an annular portion 141 fitted into the ventilation opening 12a. An insertion piece 142 that protrudes toward the lower facing portion 22 is formed in the annular portion 141 at a position facing the insertion hole 15 formed in the lower facing portion 22. The insertion piece 142 is formed such that the width of the root portion is narrower than the width of the lower portion of the insertion hole 15, and the width of the tip portion is narrower than the width of the upper portion of the insertion hole 15 and wider than the width of the lower portion of the insertion hole 15. Yes.

  As shown in FIG. 9, an attracting portion 143 that is bent and extends downward is formed on the outer peripheral edge portion of the annular portion 141 of the louver 14 that contacts the cover 12. As shown in FIG. 2, the attracting part 143 does not protrude below the cover 12 although it is bent downward. By bending the attracting part 143 downward in the same direction as the direction of the wind, the resistance of the wind flow is reduced, and an increase in pressure loss can be suppressed. Further, the gallery 14 is formed with a plurality of blades 144 that divide the inside of the annular portion 141 into a plurality of vent holes. The blade 144 may be formed integrally with the annular portion 141 or may be provided separately.

  Next, a method for attaching the louver 14 will be described. FIG. 10 is a diagram illustrating a method for attaching the louver 14 in the first embodiment. FIG. 11 is a partial enlarged cross-sectional view in which the portion B shown in FIG. 2 is enlarged. First, in the gallery 14, the insertion piece 142 formed in the annular portion 141 is inserted into the insertion hole 15 formed in the lower facing portion 22 (see also FIGS. 4, 5, and 8). At this time, the insertion piece 142 is inserted to the root through the upper part of the insertion hole 15 and then pushed downward. Thereby, the base part of the insertion piece 142 fits in the lower part of the insertion hole 15, and the tip of the insertion piece 142 is hooked, so that the louver 14 is prevented from falling off. Moreover, in the part which becomes the other side of the downward facing part 22 among the louvers 14, the louver 14 is fixed to the cover 12 using the screw 18, as shown in FIG. Specifically, the screw 18 is screwed into the screw hole 17 a formed in the louver fixing piece 17 provided inside the cover 12.

  According to the ventilation terminal component 1 described above, it is possible to suppress an increase in pressure loss in the ventilation port 12a portion due to the draining plate 13 and an increase in pressure loss in the ventilation port 12a portion due to the annular portion 141 of the louver 14. FIG. 12 is a diagram illustrating a pressure distribution in the ventilation port 12a portion of the ventilation terminal component 1 according to the first embodiment. FIG. 13 is a diagram illustrating a pressure distribution in the ventilation port 212a portion of the ventilation terminal component 200 according to the comparative example.

  In the ventilating terminal component 200 according to the comparative example, the draining plate is not provided with the avoidance portion, and has a uniform front-rear width across the entire width. Therefore, as shown in FIG. 13, the draining plate reduces the substantial opening area of the vent 212a, and the pressure loss is high at the draining plate portion.

  On the other hand, in the ventilation terminal component 1 according to the first embodiment, the avoidance portion 132 having a small front-rear width is provided in the portion where the pressure loss is high in the comparative example, so that the substantial opening area of the ventilation port 12a is reduced. Therefore, an increase in pressure loss at the draining plate 13 portion can be suppressed.

  Further, by providing the attracting portion 143 at the outer peripheral edge portion that contacts the cover 12 in the annular portion 141 of the louver 14, the stagnation region of the airflow at the edge portion of the louver 14 is reduced. Thereby, the increase in the pressure loss in the inner part of the cover 12 as seen in the comparative example can be suppressed. Moreover, since the annular part 141 does not protrude below the cover 12, the handling property and the maintenance property of the ventilation terminal component 1 can be improved.

  In addition, the dew condensation water that is generated in the ventilation duct 3 and leaks from the gap between the base plate 11 and the insertion portion 11b and enters between the base plate 11 and the wall surface 2 is separated from the groove 16 formed in the lower facing portion 22 and the upper portion. It can be discharged to the surface of the base plate 11 from between the facing portion 21 and guided to the central portion 131 of the draining plate 13. That is, the region surrounded by the groove 16 and the upper facing portion 21 functions as a drain hole for discharging water from the back surface side to the front surface side of the base plate 11. Further, the central portion 131 functions as a drain water guiding portion that guides the condensed water generated in the ventilation duct 3 so as to be separated from the wall surface 2. Thereby, the stain | pollution | contamination of the wall surface 2 which generate | occur | produces by condensed water can be suppressed.

  Here, the water leaked from the gap between the base plate 11 and the insertion portion 11b flows down the central portion of the ventilation terminal component 1 in the lateral width direction. In the first embodiment, since the groove 16 is formed above the central portion 131, the water flowing down the central portion can be more reliably discharged to the surface side of the base plate 11.

  Further, since the groove 16 which is a drain hole for discharging water from the back surface side to the front surface side of the base plate 11 is formed separately from the insertion hole 15, the water flowing on the back surface side of the base plate 11 is inserted into the insertion hole. This makes it difficult to contact the insertion piece 142 inserted into 15. Thereby, corrosion of the insertion piece 142 can be suppressed. In addition, since the louver 14 is attached so that the tip is lower, the insertion piece 142 is also inclined, so that the water on the insertion piece 142 easily flows toward the tip. Therefore, corrosion of the insertion piece 142 can be further suppressed.

  Further, rainwater that falls on the cover 12 and the wall surface 2 and flows along the side portion of the cover 12 is received by the end portion 133 of the draining plate 13 and flows on the inclined surface 13 a of the end portion 133. That is, the end portion 133 functions as a rainwater guiding portion that guides rainwater that flows down along the side portion of the cover 12 so as to be separated from the wall surface 2. Thereby, the stain | pollution | contamination of the wall surface 2 which generate | occur | produces with rain water can be suppressed.

  Moreover, the water adhering on the avoidance part 132 for some reason is easily guided to the center part 131 or the end part 133 along the steep slope part 134. By dropping water from the tip of the central portion 131 or the end portion 133, it is possible to drop water from a position away from the wall surface 2, rather than dropping from the tip of the avoidance portion 132. Thereby, falling water becomes difficult to adhere to the wall surface 2 with a wind etc., and the dirt which generate | occur | produces on the wall surface 2 is suppressed.

  FIG. 14 is a diagram illustrating an example in which a fire-proof damper 19 is provided in the insertion portion 11b of the ventilation terminal component 1 according to the first embodiment. By providing the fire damper 19, fire prevention measures can be taken. The fireproof damper 19 has two semicircular damper plates 25 supported by a shaft 24. The fire damper 19 has a spring 26 that biases the damper plate 25 in the opening direction. A thermal fuse 27 that is melted at a predetermined temperature is attached to the tip of the damper plate 25. The temperature fuse 27 holds the two damper plates 25 so as to be closed. In the event of a fire, the damper plate 25 is opened by rotating by the force of the spring 26 by melting and dividing the thermal fuse 27. Thereby, the ventilation opening 2a is closed and the progression of flames and smoke due to fire to the outside is prevented.

  FIG. 15 is a diagram illustrating an example in which the insect net 20 is applied instead of the louver in the ventilation terminal component 1 according to the first embodiment. As shown in FIG. 15, an insect net 20 may be used instead of the louver. As a result, it is possible to prevent the invading insects and the like from entering the room indoors.

  FIG. 16 is a perspective view of a draining plate 13 according to a modification of the first embodiment. In the draining plate 13 according to the modified example, by forming a plurality of slits 23 in the avoiding portion 132, a substantial decrease in the opening area of the vent hole 12a is suppressed, and an increase in pressure loss is suppressed.

  The configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

  DESCRIPTION OF SYMBOLS 1 Ventilation terminal component, 2 Wall surface, 2a Ventilation port, 3 Ventilation duct, 11 Base plate (wall facing part), 11a Opening, 11b Insertion part, 11c Retaining metal fitting, 12 Cover, 12a Ventilation hole, 13 Drain plate, 13a Inclined surface , 14 louver, 15 insertion hole, 16 groove, 17 louver fixing piece, 17a screw hole, 18 screw, 19 fireproof damper, 20 insect net, 21 upper facing part, 22 lower facing part, 23 slit, 24 shaft, 25 damper plate , 26 Spring, 27 Thermal fuse, 131 Central part, 132 Avoidance part, 133 End part, 134 Steep slope part, 135 Cross flow prevention part, 141 Annular part, 142 Insertion piece, 143 Induction part, 144 Blade

Claims (5)

A ventilation terminal part covering a ventilation opening formed on the wall surface,
An opening communicating with the ventilation port is formed, and a wall surface facing portion that exhibits a plate shape facing the wall surface;
A cover that covers and opens the opposite surface side of the wall surface of the wall facing portion as a ventilation opening;
A draining plate provided below the ventilation port and at a lower portion of the wall facing portion, and having an inclined surface that is separated from the wall surface as it goes downward.
And a gallery having an annular portion fitted into the ventilation opening,
A ventilating terminal component, wherein an attracting portion extending downward is formed in an outer peripheral edge portion of the annular portion that contacts the cover.   The ventilation terminal component according to claim 1, wherein the attraction portion does not protrude downward from the cover.   The ventilation terminal component according to claim 1 or 2, wherein the gallery has a blade that divides the inside of the annular portion into a plurality of vent holes.   The ventilation terminal component according to claim 3, wherein the blade is formed integrally with the annular portion.   The ventilation terminal component according to claim 3, wherein the blade is provided separately from the annular portion.