JP2010223518A - Ventilation hole member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation hole member capable of effectively preventing infiltration of raindrop while keeping proper ventilation. <P>SOLUTION: This ventilation hole member includes a body section 20 having the tubular shape comprising a ventilation passage and having an opening 20f as a suction port, and a plurality of plate-shaped blades 22 disposed inside of the body section 20, and having a bent section at one side. Each of the blades 22 is disposed in a state that its bent section is positioned at an opening 20f side. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vent member.

  A vent member with rainproof and insectproof measures is applied to a vent of an air conditioning duct or the like for taking outdoor air into the room.

  For example, a circumferential groove is formed in the pipe of the vent member, a retainer ring with a resilient flange pressed against the inner surface of the pipe is fitted into the groove, and caulking is performed on the base tube outside the groove. The structure which has the flange which hold | maintains an agent is disclosed (patent document 1).

  In addition, in the weather cover that forms an opening at the bottom and covers the air circulation port to prevent raindrops from entering, it is supported by a fulcrum pin and is provided with a windbreak plate that changes the angle by wind pressure and shields the opening Is disclosed (Patent Document 2).

  In addition, a hood is provided at the vent, and the lower edge of the hood is formed to be inclined so that the front part is lower than the rear end. A configuration in which a bent portion is formed and rainwater is allowed to flow through the bent portion is disclosed (Patent Document 3).

  Moreover, the structure which provided the air filter bent in the folding screen shape so that attachment or detachment was possible was disclosed in the weather cover which covers an exhaust port in hood shape (patent document 4).

Japanese Utility Model Publication No. 63-165426 Japanese Utility Model Publication No. 56-90623 Japanese Patent Laid-Open No. 11-125442 JP 2005-265239 A

  By the way, the conventional vent member cannot effectively remove mist-like raindrops that directly enter the vent together with the flowing air. Particularly, in recent years, the ventilation speed has been increased to nearly 10 m / s due to the improvement of the ventilation capacity, and more raindrops are sucked into the vent together with the air, and there is a need for means for efficiently removing it.

  On the other hand, it is necessary to have a structure that does not lower the conductance of ventilation, which is the original purpose of the vent, as much as possible. For example, if an air filter bent like a folding screen is provided so as to cross the ventilation passage as in Patent Document 4, a decrease in ventilation conductance will be significant.

  In view of the above problems, an object of the present invention is to provide a vent member having a new structure.

  One aspect of the present invention is a vent member provided on the outdoor side of a venting application, which is a tubular member constituting an air passage, and has a main body portion having an open port serving as a suction port, A plurality of plate-like blades disposed inside and having a bent portion on one side, and each of the blades is disposed such that the bent portion is directed to the opening side. Features.

  Here, each of the blades is preferably disposed so as to be inclined with respect to the air passage so that the surface of the main body on the side where the bent portion is provided faces the opening of the main body. is there.

  Further, it is preferable that the blades are arranged so that the end portions of two adjacent blades are in contact with each other or overlap each other when the air passage is viewed vertically from the opening.

  Further, it is preferable that the plurality of blades are arranged so as to be inclined with respect to a line perpendicular to the air passage.

  Further, it is preferable that a net member is provided on at least a part of the surface of the blade. Further, it is preferable that a hydrophilic paint is applied to at least a part of the surface of the blade. Further, it is preferable that at least a part of the surface of the blade is grooved.

  According to the present invention, it is possible to provide a vent member that can effectively prevent raindrops from entering while maintaining appropriate ventilation.

It is a figure showing the whole ventilation system composition in an embodiment of the invention. It is sectional drawing which shows the structure of the vent member in embodiment of this invention. It is a perspective view which shows the structure of the vent member in embodiment of this invention. It is an expansion perspective view which shows the structure of the vent member in embodiment of this invention. It is a perspective view which shows the structure of the braid | blade in embodiment of this invention. It is a figure which shows the air flow in the vent member in the embodiment of the present invention. It is sectional drawing which shows the structure of the vent member in embodiment of this invention. It is a figure which shows the relationship between the arrangement | positioning of a braid | blade, and a braid | blade space | interval in embodiment of this invention. It is a perspective view which shows the structure of the braid | blade in embodiment of this invention.

  As shown in FIG. 1, the ventilation system 100 according to the embodiment of the present invention includes a fan unit 102 and a vent member 104. As shown in FIG. 1, the ventilation system 100 is attached to a mounting hole 106 formed in a wall or the like of a building, and is used to ventilate indoors and outdoors.

  The fan unit 102 includes a motor 10 including blades, and drives the motor 10 with electric power to rotate the blades and take in outdoor air (air) into the room through the vent member 104. The ventilation system 100 according to the present embodiment is characterized by the vent member 104, and the fan unit 102 will not be described in detail, but a conventional configuration can be applied.

  The vent member 104 is attached outdoors for ventilation (intake or exhaust). As shown in the enlarged sectional view of FIG. 2, the vent member 104 includes a main body portion 20, a blade 22, and a filter 24.

  The main body 20 is formed in a tubular shape so as to cover the outdoor side of the attachment hole 106 and form the air passage 26. FIG. 3 is a perspective view showing a configuration example of the vent member 104. Note that FIG. 3 shows a state in which the filter 24 is removed in order to clearly show the internal structure of the vent member 104. For example, as shown in the perspective view of FIG. 3, the main body 20 is configured by combining an upper surface member 20a, a lower surface member 20b, and side members 20c and 20d so as to form a rectangular air passage 26. Each of the upper surface member 20a, the lower surface member 20b, and the side surface members 20c and 20d is preferably made of a material excellent in rust prevention, for example, aluminum or stainless steel.

  The main body 20 formed in a tubular shape has a connection port 20e attached to the attachment hole 106 and an open port 20f opened outdoors. Further, the main body portion 20 is formed in a structure bent at the bent portion 20g so that the opening 20f faces downward in order to reduce raindrops that enter the air passage 26 as much as possible during rainfall. When the vent member 104 is attached to the attachment hole 106, it is preferable that the opening 20f be directed downward. When the wall provided with the attachment hole 106 is vertical, the bending angle of the bent portion 20g is It is about 90 °. Further, it is preferable that the bent portion 20g be bent smoothly so as to have a predetermined curvature.

  FIG. 4 shows an enlarged perspective view near the opening 20f. As shown in the perspective view of FIG. 3 and the enlarged perspective view of FIG. 4, the opening member 20f of the upper surface member 20a, the lower surface member 20b, and the side members 20c and 20d is folded back toward the outer side and the inner side of the opening port 20f. It is preferable to provide the flange 20h. Further, a part of the flange portion 20h is cut out to serve as a drain port 20i for discharging moisture such as rainwater from the air passage 26.

  Further, the vent member 104 in the present embodiment has a blade 22 in the vent passage 26. FIG. 5 is a perspective view showing the configuration of the blade 22. As shown in FIG. 5, the blade 22 is configured to include a bent portion 22 b obtained by bending one side of a flat blade main body 22 a into a U shape or a U shape. The bending portion 22b plays the role of a trough for allowing the water collected by the blade 22 to flow. The width w and the height h of the bent portion 22b are preferably 10 mm or less. The blade 22 is preferably made of a material excellent in rust prevention, for example, aluminum or stainless steel.

  Such a blade 22 is disposed in the air passage 26 in the vicinity of the opening 20f. The blade 22 is attached in a direction crossing the air passage 26 from the side member 20c to the side member 20d. The width of the blade 22 is preferably a width that extends substantially from the side member 20c to the side member 20d. However, as shown in FIG. 4, it is preferable that the width d is formed so that a gap d is formed between the end of the blade 22 and the side member 20c (not shown, but also on the side member 20d side). The gap d is preferably 0.5 mm or more and 1 mm or less.

  The blade 22 is attached so that the end that is the bent portion 22b is on the open port 20f side and the end that is not the bent portion 22b is on the connection port 20e side. At this time, the blade 22 is attached so as to be inclined with respect to the air passage 26 so that the surface of the blade body 22a on the side having the bent portion 22b faces the open port 20f. That is, when the vent member 104 is attached to the attachment hole 106, the blade 22 is attached so as to be inclined so that the surface of the blade body 22a on the side having the bent portion 22b faces downward. The inclination angle θ may be anything as long as the blade body 22a is not disposed along the air passage 26, but is preferably in the range of 40 ° to 80 °, and more preferably about 60 °.

  When a plurality of blades 22 are disposed, it is preferable that the blade bodies 22a of the blades 22 are disposed so as to be substantially parallel to each other, as shown in FIGS. In the present embodiment, as indicated by broken lines A and B in FIG. 2, a plurality of blades 22 are arranged along lines (broken lines A and B) perpendicular to the air passage 26.

  When a plurality of blades 22 are arranged, the length of the blades 22 is such that the ends of two adjacent blades 22 appear to touch or overlap when the ventilation path 26 is viewed vertically from the opening 20f. And the inclination angle θ are preferably adjusted. That is, as shown by a broken line C in FIG. 2, the bending portion 22b of the blade body 22a of one blade 22 is opposite to the bending portion 22b of the blade body 22a of the blade 22 adjacent to the blade 22. It is configured so that the side end portion can be seen in contact with or overlapped with each other. Thereby, when gas is sucked from the open port 20f, an air flow can be created so that the gas flowing between the plurality of blades 22 hits one of the blades 22.

  Further, a filter 24 may be attached to the opening 20f for dust prevention and insect prevention. The filter 24 is preferably, for example, a frame material made of a net material or a nonwoven fabric made of metal or the like. The filter 24 is preferably configured so that the pressure loss of ventilation is not reduced as much as possible.

  By providing the blade 22 in the air passage 26 in this way, when air is sucked from the opening 20f by the fan unit 102, mist-like raindrops and the like that have entered the air passage 26 together with the air can be removed. That is, as shown by thick arrows in FIG. 4, mist-like raindrops or the like that have entered the air passage 26 strike the blade 22 along the air flow and aggregate as water droplets, and are bent through the blade body 22a by its own weight. It collects in part 22b. The water droplets accumulated in the bent portion 22b flow to the end of the bent portion 22b, pass through the gap d between the blade 22 and the side member 20c or 20d, and travel along the inner walls of the side members 20c and 20d. It flows down to the flange 20h provided at the opening 20f. Further, it flows through the flange 20h to the end of the flange 20h, and is discharged from the drain 20i provided at the end of the flange 20h to the air passage 26. In this way, moisture such as raindrops can be removed by the blade 22.

  Further, by providing a plurality of blades 22, moisture such as raindrops can be removed without greatly reducing the conductance in the air passage 26. That is, if raindrops and the like sucked into the air passage 26 by the single blade 22 are to be removed, most of the air passage 26 is blocked by the single blade 22 and the conductance is lowered. On the other hand, when a plurality of blades 22 are arranged side by side, most of the prospective surface of the air passage 26 viewed from the open port 20f can be covered by the overlap of the plurality of blades 22, and the conductance of the air passage 26 can be changed between the spaces between the blades 22. Can be secured.

  Further, as shown by the arrows in FIG. 6, the blade 22 is inclined and arranged so that the air flowing through the air passage 26 is changed by the blade 22 toward the bent portion 20 g of the air passage 26. An effect of aggregating air containing moisture that could not be removed onto the bent portion 20g and aggregating it as water droplets is also obtained. The water aggregated in the bent portion 20g is transmitted to the flange portion 20h provided in the opening 20f through the inner wall of the air passage 26 by its own weight, flows to the end portion of the flange portion 20h through the flange portion 20h, The water is discharged from the drain 20i provided at the end of the flange 20h to the air passage 26.

  Moreover, as shown in FIG.3 and FIG.4, you may provide the baffle board 20j in the corner | angular part of the opening 20f. The baffle plate 20j is a relatively small plate and is disposed so as to cover the end portion of the flange portion 20h of the opening 20f. The baffle plate 20j can reduce the wind speed in the vicinity of the baffle plate 20j, and can prevent the water flowing through the flange 20h and the water flowing through the inner wall of the air passage 26 from flowing back into the air passage 26.

  It is also preferable to attach the blade 22 by tilting it toward the opening 20f from one of the side members 20c, 20d toward the other. By tilting the blade 22 in this way, the water collected in the bending portion 22b can be discharged more quickly.

  Further, as indicated by broken lines D and E in FIG. 7, a plurality of blades 22 may be inclined and arranged in a staircase pattern with respect to a line perpendicular to the air passage 26. At this time, it is preferable that the blade 22 adjacent to the side where the bending portion 22 b of the blade 22 is not provided is inclined so that the blade 22 is disposed deeper in the air passage 26.

  With such an arrangement, as shown in FIG. 8, when the ventilation path 26 is viewed vertically from the opening 20f, the adjacent two blades 22 are adjacent to each other when they are in contact with each other or overlap. The interval D2 between the matching blades 22 can be made wider than the interval D1 when the blades 22 are arranged without being inclined, and the decrease in conductance in the air passage 26 can be further suppressed. In addition, the wind speed on the surface of the blade 22 can be reduced to enhance the effect of removing moisture by the blade 22. Further, as shown by the arrows in FIG. 7, when the water adhering to the outside of the bent portion 22 b of the blade 22 is sucked into the air passage 26 again, there is a possibility that it can be removed by the blade 22 in the next stage. Can be increased. Furthermore, moisture that has entered the air passage 26 via the blade 22 is more likely to adhere to the bent portion 20g, and the moisture removal efficiency can be increased.

  Furthermore, when the wind speed in the air passage 26 is high, the water aggregated on the surface of the blade 22 may be caught in the air flow again and sucked into the air passage 26. Therefore, in order to collect moisture in the flange 20h without being affected by the air flow near the surface of the blade 22, as shown in FIG. The moisture adhering to the surface may be prevented from being sucked again. In order to obtain the same effect, for example, a method in which a hydrophilic paint is applied to at least a part of the surface of the blade 22 or a groove process is applied to at least a part of the surface of the blade 22 may be applied. .

  In the present embodiment, the configuration in which the blade 22 is attached in the direction crossing the air passage 26 from the side member 20c to the side member 20d has been described, but in the direction crossing the air passage 26 from the upper surface member 20a to the lower surface member 20b. A blade 22 may be attached.

  DESCRIPTION OF SYMBOLS 10 Motor, 20 Main-body part, 20a Upper surface member, 20b Lower surface member, 20c Side member, 20d Side member, 20e Connection port, 20f Opening port, 20g Bending part, 20h Gutter part, 20i Drainage port, 20j Baffle plate, 22 Blade, 22a Blade body, 22b Bending section, 24 Filter, 26 Ventilation path, 28 Net, 100 Ventilation system, 102 Fan section, 104 Vent member, 106 Mounting hole.

Claims (7)

A vent member provided outside the room for ventilation purposes,
A tubular member constituting the air passage, and a main body having an opening serving as a suction port;
A plurality of plate-like blades arranged inside the main body and having a bent portion on one side;
With
Each of the blades is a vent member characterized in that the bent portion is arranged so as to face the opening side. The vent member according to claim 1,
Each of the blades is arranged to be inclined with respect to the air passage so that the main body surface on the side where the bent portion is provided faces the opening of the main body. Element. The vent member according to claim 2,
The vent member, wherein the blades are arranged so that the ends of two blades adjacent to each other appear to be in contact with each other or overlap each other when the vent passage is viewed perpendicularly from the opening. The vent member according to any one of claims 1 to 3,
The air vent member, wherein the plurality of blades are arranged to be inclined with respect to a line perpendicular to the air passage. The vent member according to any one of claims 1 to 4,
A vent member having a mesh member provided on at least a part of a surface of the blade. The vent member according to any one of claims 1 to 5,
A vent member characterized in that a hydrophilic paint is applied to at least a part of the surface of the blade. The vent member according to any one of claims 1 to 5,
A vent member characterized in that at least a part of the surface of the blade is grooved.

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