JP7324719B2 - Inflow water drainage structure of air supply duct - Google Patents

Description

TECHNICAL FIELD The present invention relates to the structure of an air duct, and more particularly to an inflow water drainage structure suitable for an air duct having an opening communicating with a building near the ground.

In recent years, flood damage caused by heavy rains and floods has become a problem. Under such circumstances, in an air conditioning system in a building or the like, a ventilation opening of a duct installed indoors is provided on the exterior wall of the building, and water may flow into the duct from the ventilation opening.

Air supply ducts were originally installed for the purpose of passing gas through them, so if the suspension load increases due to the inflow of water, the ducts may break and the inflow water may leak indoors. . For this reason, when flooding is suspected at the ground level, measures are generally taken to prevent water from flowing into the duct by manually installing waterstops, sandbags, or the like. However, because the person in charge of managing the duct is not aware that water will flow in from the duct opening (ventilation port), there are cases where water stoppage measures cannot be taken, or where water stoppage measures cannot be taken due to a shortage of personnel. In some cases, it is not possible to take

In view of such circumstances, Patent Literature 1 discloses a structure in which a water stop plate is automatically activated when water flows into the duct. Specifically, a detection tank is provided in a part of the bottom plate of the duct, and when inflow water is stored in this detection tank, the stopper of the water stop plate is released by its own weight, and the water stop plate operates. is.

JP 2015-227739 A

With the water stop structure disclosed in Patent Document 1, regardless of whether or not the person in charge of managing the duct recognizes the inflow of water, when water flows into the duct, It is possible to dam this up.

However, with the means disclosed in Patent Document 1, the inflow water is stored in a part of the duct. I haven't been able to solve the problem of breakage.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an inflow water drainage structure capable of draining water and preventing breakage of the duct when water has flowed into the air supply duct.

The inflow water drainage structure of the air supply duct according to the present invention for achieving the above object comprises a ventilation opening provided outside the building, a vertical duct extending downward from the ventilation opening, and the vertical duct An air supply duct for an air conditioner having a communicating horizontal duct, wherein a drainage channel is provided below the horizontal duct, and a bottom plate of the horizontal duct is located above the drainage channel. It is characterized by having a drainage opening.

Further, in the inflow water drainage structure of the air supply duct having the above characteristics, the water storage part is provided below the connection position of the horizontal duct in the vertical duct, and the inflow water is provided in the water storage part. a partition plate that operates under the load of , a drainage cover that covers the drainage opening, and a connection member that connects the partition plate and the drainage lid, and the operation of the partition plate causes the drainage lid to open the drainage opening. It is characterized in that the covering is released. With such a feature, when used as an air supply duct, the drainage opening is covered with the drainage cover, and air supply efficiency is maintained. On the other hand, when water flows into the air supply duct, the drain opening is automatically opened using the weight of the water, and the inflow water can be drained.

Further, in the inflow water drainage structure of the air supply duct having the characteristics as described above, the partition plate is extended toward the water reservoir side with the connection lower part of the vertical duct and the horizontal duct as a fulcrum, and is a force point. and a plate portion extending to the side of the horizontal pulling duct and serving as an action point, and the power point is provided with a water receiver for storing inflow water. With such features, the structure and installation of the partition plate can be simplified.

In addition, in the inflow water drainage structure of the air supply duct having the above characteristics, the side surface of the vertical duct, on the upper side of the connection part with the horizontal duct, drains the inflow water to the water receiver. It is characterized by having a guide plate for guiding. With such characteristics, the inflow water can be efficiently flowed into the water receiver, and the partition plate can be operated early to open the drainage opening.

Furthermore, the inflow water drainage structure of the air supply duct having the above characteristics is characterized in that a spacer is provided between the drain cover and the bottom plate of the horizontal duct. With this feature, it is possible to prevent the drainage lid from sticking to the bottom plate of the horizontal duct due to the influence of moisture, moisture, pressure difference, etc., making it difficult to remove the cover. .

According to the inflow water drainage structure of the air supply duct having the above characteristics, when water flows into the air supply duct, it can be drained and the damage of the duct can be prevented.

FIG. 4 is a cross-sectional view showing the configuration of the inflow water drainage structure of the air supply duct according to the first embodiment; FIG. 2 is a diagram showing the configuration of an air supply duct in a cross-sectional view taken along the line AA in FIG. 1; FIG. 4 is a diagram showing how water flows into an air supply duct; FIG. 10 is a diagram showing how the partition plate is activated by the water that has flowed into the air supply duct; FIG. 4 illustrates how influent water flows down a drain through a drain opening; FIG. 8 is a cross-sectional view showing the configuration of the inflow water drainage structure of the air supply duct according to the second embodiment; FIG. 10 is a cross-sectional view showing the structure of an inflow water drainage structure for an air supply duct according to a third embodiment; FIG. 11 is a perspective view for explaining the structure of a drainage lid in the inflow water drainage structure of the air supply duct according to the third embodiment;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an inflow water drainage structure for an air supply duct according to the present invention will now be described in detail with reference to the drawings. It should be noted that the embodiments shown below are part of preferred modes for carrying out the present invention, and as long as the effects of the invention are achieved, the present invention can be implemented even if part of the configuration is changed. can be regarded as

[First embodiment]
First, referring to FIGS. 1 and 2, the inflow water drainage structure of the air supply duct according to the first embodiment will be described. 1 is a cross-sectional view showing the configuration of the inflow water drainage structure of the air supply duct according to the first embodiment, and FIG. 2 is a view showing the configuration of the air supply duct in a cross-sectional view along the line AA in FIG. is.

The air supply ducts targeted by the inflow water drainage structure of the air supply duct according to the present embodiment (hereinafter simply referred to as the inflow water drainage structure 10) are the ventilation openings 18 provided outside the building 100 and the ventilation openings 18 It is a duct for air conditioning equipment having a vertical duct 12 extending downward from the vertical duct 12 and a horizontal duct 20 communicating with the vertical duct 12 . The relationship between the ventilation port 18 and the vertical duct 12 may be such that the ventilation port 18 is provided on the upper side wall surface of the vertical duct 12, or the ventilation port connection duct 16 having the ventilation port 18 at the end may be provided. A configuration in which a vertical duct 12 is provided through the groove may be employed. In this embodiment, the cross-sectional shape of both the vertical duct 12 and the horizontal duct 20 is assumed to be rectangular, but the application of the present invention is not affected by the cross-sectional shape of the duct. .

[Vertical duct]
The vertical duct 12 according to this embodiment is a duct provided along the vertical direction, and is configured to include a ventilation opening 12a, a connection opening 12b, and a water reservoir . The ventilation opening 12a is an opening leading to a ventilation opening 18 leading to the outside of the building 100, and is connected to the ventilation opening connection duct 16 in the form shown in FIG. A ventilation port 18 provided at the end of the ventilation port connection duct 16 is provided with a louver 18a or the like as necessary. By providing the ventilation port 18 with a louver 18a, it is possible to prevent foreign objects (such as small animals and dust) from entering the air supply duct.

The connection opening 12b is an opening provided in the side wall of the vertical duct 12 located below the ventilation opening 12a, and is an element for connecting the horizontal duct 20, which will be described later in detail. The water storage part 14 is provided at the lower end of the vertical duct 12 below the connection opening 12b, stores part of the inflow water, and secures an escape area for the partition plate 24, which will be described later in detail. It is an element that plays a role.

In the vertical duct 12 having such a basic configuration, the air taken in through the ventilation port 18 is supplied to the horizontal duct 20, and the air that has flowed from the horizontal duct 20 into the vertical duct 12 is discharged to the outside of the building 100. can be discharged. In addition, when water flows in from the ventilation port 18 , part of it can be stored in the water reservoir 14 . Here, with respect to the vertical duct 12, if the suspended load corresponding to the amount of water stored in the water reservoir 14 is determined in advance, the increase in load caused by the accumulation of inflow water in the water reservoir 14 will damage the air supply duct. can be prevented.

[Horizontal pulling duct]
The horizontal duct 20 is a duct connected to the connection opening 12b provided in the vertical duct 12, and is an element extending mainly in the horizontal direction to supply air to each direction of the floor. The horizontal duct 20 is provided with a drainage opening 20a. The drain opening 20a is the bottom plate of the horizontal duct 20 and is provided at a portion located near the end on the side of the connection opening 12b. This is so that the water that has flowed into the horizontal pulling duct 20 can be drained without accumulating in the horizontal pulling duct 20. - 特許庁

A drainage channel 50 is provided in the lower part of the drainage opening 20a, and configured so that water flowing down from the drainage opening 20a flows into it. The drainage channel 50 is connected to a water tank (not shown) or the like, so that water that has flowed into the water tank can be discharged. With such a configuration, the water that has flowed into the horizontal duct 20 through the vertical duct 12 flows down into the drainage channel 50 through the drainage opening 20a and is sent to the water tank. In addition, the water stored in the water tank is generally discharged to the outside of the building 100 via a pump (not shown) or the like.

[Drain lid/divider]
In this embodiment, a drain lid 22 is provided at the drain opening 20a. This is because, by covering the drainage opening 20a with the drainage cover 22, it is possible to prevent a decrease in air supply efficiency. Moreover, in this embodiment, a partition plate 24 is provided to cover the water reservoir 14 provided in the vertical duct 12 . In the case of this embodiment, the partition plate 24 is a plate member that extends toward both the vertical duct 12 side (water storage section 14 side) and the horizontal duct 20 side with the lower portion of the connection opening 12b serving as a fulcrum. Although the partition plate 24 may be a flat plate, in this embodiment, a stopper 24a is provided on the water reservoir side (lower surface side) of the fulcrum to prevent the partition plate 24 from slipping toward the horizontal pulling duct 20 side. The structure of the stopper 24a is not particularly limited, and may be a vertical plate as shown in FIG. 1 or a simple projection.

The drain lid 22 and the partition plate 24 are connected by a connecting member 26 . By connecting the two, the operation of the partition plate 24 will release the cover of the drainage opening 20a by the drainage lid 22 . The connection member 26 may be a flexible linear member such as a wire or string, and may be a chain or the like. The form of connection between the drain lid 22 and the partition plate 24 by the connection member 26 is not particularly limited, but the end portion of the drain lid 22 on the side of the connection opening 12b and the end portion of the partition plate 24 on the side of the horizontal duct 20 are connected to each other. If it is configured to be connected, the connecting member 26 can be made short.

In this embodiment, a water receiver 24b is provided at the end portion of the partition plate 24 on the water storage portion 14 side. The configuration of the water receiver 24b is not limited, and may be configured, for example, by enclosing it with a plate member. By providing the water receiver 24b, the inflow water is accumulated in the water receiver 24b, and a load can be effectively applied to the extending portion (force point) of the partition plate 24 on the water storage section 14 side. In this embodiment, the guide plate 28 is provided on the side wall of the vertical duct 12 on the connection opening 12b side, at a height between the ventilation opening 12a and the connection opening 12b. The guide plate 28 is configured by installing a plate member facing obliquely downward, and plays a role of guiding inflow water from the ventilation opening 12 a to the water receiver 24 b of the partition plate 24 . With such a configuration, it is possible to operate the partition plate 24 while the amount of inflow of water is small.

Further, in this embodiment, a spacer 22a is provided between the drainage cover 22 and the bottom plate of the horizontal duct 20. As shown in FIG. The spacer 22a may be provided so that at least one side of the drain cover 22 does not come into close contact with the bottom side of the horizontal duct 20. As shown in FIG. With such a configuration, it is possible to prevent the drain lid 22 from coming into close contact with the bottom plate and exerting a force that prevents the release of the covering of the drain opening 20a.

Furthermore, in this embodiment, the drainage opening 20a is provided with a lid stopper 20b. The lid stopper 20b is an element that plays a role of preventing the drainage lid 22 from returning to block the drainage opening 20a after the drainage lid 22 has been moved. Although the specific configuration is not critical, for example, a configuration in which a pin is inserted into a cylindrical main body and pushed out from the main body by a spring or the like may be employed. The pushing load of the pin should be lower than the load due to the weight of the drain lid 22 itself. With such a configuration, when the drain opening 20a is covered with the drain cover 22, the pin is pushed into the main body. On the other hand, when the drainage opening 20a is uncovered by the drainage lid 22, the pin protrudes from the main body, making it possible to prevent the drainage lid 22 from returning to the drainage opening 20a side.

[Action/effect]
The operation and effects of the inflow water drainage structure 10 configured as described above will be described below with reference to FIGS. 3 to 5. FIG. In the drawings, FIG. 3 is a diagram showing how water flows into the air supply duct, and FIG. 4 is a diagram showing how the partition plate is activated by the water that has flowed into the air supply duct. Moreover, FIG. 5 is a figure which shows a mode that inflow water flows down to a drainage channel through a drainage opening.

As shown in FIG. 3, when water flows into the vertical duct 12 from the ventilation opening 12a through the ventilation port 18, the inflowing water drops vertically or is guided by the guide plate 28 to the water receiver 24b of the partition plate 24. is guided.

When the inflow water accumulates in the water receiver 24b, as shown in FIG. The side extending portion is tilted so as to drop into the water storage portion 14.例文帳に追加When the partition plate 24 tilts, the drain cover 22 connected to the partition plate 24 by the connecting member 26 is pulled toward the vertical duct 12, and the covering of the drain opening 20a is released.

As a result, as shown in FIG. 5, the inflow water overflowing from the water storage part 14 flows into the drainage channel 50 through the drainage opening 20a and flows into the water storage tank (not shown), completing the drainage from the air supply duct. . Here, as shown in FIG. 5, when the amount of water stored in the water storage portion 14 increases, depending on the material of the partition plate 24, the tilt may be canceled by buoyancy. Since it is provided, there is no possibility that it will flow to the horizontal pulling duct 20 side. In addition, the partition plate 24 and the drainage lid 22 are connected by a connecting member 26 made of a flexible linear material, and the lid stopper 20b protrudes from the edge of the drainage opening 20a. , the state return of the partition plate 24 does not cause the drain cover 22 to be returned to its original position.

As described above, according to the inflow water drainage structure 10 according to the present embodiment, regardless of whether it is expected or not, when water flows into the air supply duct, it can be automatically drained. Therefore, damage to the air supply duct can be prevented.

[Second embodiment]
Next, with reference to FIG. 6, a second embodiment of the inflow water drainage structure of the air supply duct of the present invention will be described. The basic structure of the inflow water drainage structure 10A according to this embodiment is the same as the inflow water drainage structure 10 according to the first embodiment described above. Therefore, portions having the same functions are denoted by the same reference numerals in the drawings, and detailed description thereof will be omitted.

A difference from the inflow water drainage structure 10 according to the first embodiment is the structure of the partition plate 24A. Specifically, in the inflow water drainage structure 10A according to the present embodiment, the partition plate 24A is configured to move vertically in the depth direction of the water storage section 14 . That is, the planar dimension of the partition plate 24A and the cross-sectional opening dimension of the vertical duct 12 are configured to substantially match. With such a configuration, when the inflow water is supplied to the partition plate, the weight of the inflow water causes the partition plate 24A to descend into the water reservoir 14 . As a result, the drain cover 22 connected by the connecting member 26 moves to uncover the drain opening 20a due to the lowering of the partition plate 24A.

In such a configuration, a guide rail (not shown) is provided on the inner wall surface of the vertical duct 12 (water reservoir 14), and the partition plate 24A is provided with a slider (not shown) that can move along the guide rail. It is preferable to set it as the structure provided. This is because such measures enable the partition plate 24A to move up and down smoothly. An enclosure (not shown) may be provided around the partition plate so that the entire partition plate 24A serves as the water receiver 24b. Regarding the position control of the partition plate 24A (state maintenance during non-operation), it may be supported by a spring with the water reservoir 14 as a base point, or the support state is released when a predetermined load is applied. A known technique may be used for arranging the support member.

Other structures, actions, and effects are the same as those of the inflow water drainage structure 10 according to the first embodiment described above.

[Third Embodiment]
Next, with reference to FIG. 7, a third embodiment of the inflow water drainage structure of the air supply duct of the present invention will be described. The basic structure of the inflow water drainage structure 10B according to the present embodiment is similar to that of the inflow water drainage structure 10 according to the first embodiment described above. Therefore, portions having the same functions are denoted by the same reference numerals in the drawings, and detailed description thereof will be omitted.

In each of the inflow water drainage structures 10 and 10A according to the first and second embodiments, the water storage portion 14 is provided at the bottom of the vertical duct 12, and the partition plates 24 and 24A are operated using the water storage portion 14. was. On the other hand, in the present embodiment, the water storage part and the partition plate are eliminated, and the drain lid 22B is configured to be operated by the weight of the inflow water.

Specifically, a rotating shaft 22Ba (see FIG. 8) is arranged near the center of the drain opening 20a in the air supply direction, and supports the drain cover 22B. As a result, the drainage lid 22B can rotate about the rotating shaft 22Ba. In this embodiment, a damming plate 22Bb is arranged at a portion of the drain lid 22B located above the rotating shaft 22Ba. With such a configuration, when water flows into the horizontal duct 20, the inflow water is accumulated between the vertical duct 12 and the damming plate 22Bb. As a result, a partial load is applied to the drain cover 22B on the inflow water storage side (vertical duct 12 side), and a force is applied to rotate around the rotating shaft 22Ba, thereby opening the drain opening 20a.

If the load associated with the operation of the drainage lid 22B is desired to be greater than or equal to a predetermined load, as shown in FIG. It is sufficient to give resistance to . In this way, in the case of providing a force to prevent the rotation of the drainage lid 22B, it is also possible to employ a configuration in which the rotating shaft 22Ba is arranged at the end of the drainage lid 22B.

10, 10A, 10B ...... Influent drainage structure, 12 ...... Vertical duct, 12a ...... Ventilation opening, 12b ...... Connection opening, 14 ...... Water reservoir, 16 ...... Ventilation opening connection duct, 18 Ventilation port, 18a Rall, 20 Horizontal duct, 20a Drainage opening, 20b Lid stopper, 22, 22B Drainage lid, 22a Spacer, 22Ba...Rotating shaft 22Bb Dam plate 22Bc Helical spring 24, 24A Partition plate 24a Stopper 24b Water receiver 26 Connecting member , 28... Guide plate, 50... Drainage channel, 100... Building.

Claims (4)

An air supply duct for an air conditioning system having a ventilation opening provided outside a building, a vertical duct extending downward from the ventilation opening, and a horizontal duct communicating with the vertical duct,
A drainage channel is provided in the lower part of the horizontal duct, and a water storage part is provided below the connection position of the horizontal duct in the vertical duct,
a drainage opening provided at a portion of the bottom plate of the horizontal duct located above the drainage channel ;
a partition plate provided in the water storage section and operated by the load of inflow water;
a drain lid covering the drain opening;
a connection member that connects the partition plate and the drain lid,
An inflow water drainage structure for an air supply duct, characterized in that a covering of the drainage opening by the drainage cover is released by operation of the partition plate. The partition plate has a lower connection point between the vertical duct and the horizontal duct as a fulcrum,
a plate portion extending toward the water storage portion and serving as a force point;
a plate portion extending to the side of the horizontal pulling duct and serving as a point of action;
2. The inflow water drainage structure for an air supply duct according to claim 1 , wherein said force point is provided with a water receiver for storing inflow water. 3. A guide plate for guiding inflow water to the water receiver is provided on a side surface of the vertical duct above a connecting portion with the horizontal duct. inflow water drainage structure of the air supply duct. 4. The inflow water drainage structure for an air supply duct according to any one of claims 1 to 3 , wherein a spacer is provided between the drainage cover and the bottom plate of the horizontal duct.

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