JP4990637B2 - Intermediate strainer device in building ventilation system - Google Patents

Description

  The present invention relates to an intermediate strainer device disposed in an exhaust duct between an indoor ventilation port in a building ventilation facility and an exhaust port that exhausts indoor air to the outside of the building.

In building ventilation equipment, in order to exhaust indoor air from the bathroom, washroom, kitchen, etc. to the outside of the building, the air in each room is exhausted collectively or individually via an exhaust duct extending from each room. A register provided with a mesh (insect repellent net) made of stainless steel or the like that suppresses intrusion of rainwater into the exhaust duct or entry of foreign matter such as insects and dust. A hood is generally installed.
However, since the register hood often has foreign matter such as insects and dust attached to the mesh over time and the mesh itself is almost blocked, it can be used with ventilation means such as mechanical ventilation. Even when exhausting, the air flow is blocked by foreign matter adhering to this mesh, and indoor air cannot be exhausted to the outside of the building, so the humidity or smell of the bathroom or toilet inside the room, or in the kitchen Smoke stays when cooking, so odors and dirt are deposited on the curtains and wallpaper in the room, or moisture forms condensation in the room, resulting in mold generation. The problem is pointed out.
Moreover, since the register hood is generally installed on the outer wall of a building, it is easily affected by the outside air temperature. Especially in cold regions, the air containing moisture heated indoors is the mesh of the register hood. The moisture containing air is cooled and condensation occurs, causing condensation to accumulate in the exhaust duct. This is one of the major causes of water leaking downstairs.

  The above-mentioned problems can be solved by periodically removing the foreign matter adhering to the mesh of the register hood, but depending on the shape of the register hood itself, it may be difficult to clean or it may be In most cases, it is installed in a place where it is difficult to reach such as a high place, and it is extremely difficult and dangerous for the residents themselves to perform maintenance and inspection work on the register hood.

A basic technical problem of the present invention is to eliminate the above-described ventilation problems caused by the register hood.
More specifically, the technical problem of the present invention is that maintenance is performed between an indoor ventilation port in a ventilation facility and an exhaust port for exhausting indoor air to the outside of the building, and from an inspection port provided on the indoor wall. By installing the strainer detachably on the exhaust duct at a position where inspection work can be performed, the resident himself can easily carry out the cleaning work of the strainer from the room through the inspection port. It is to eliminate poor ventilation in the room due to clogging due to foreign matter such as dust and dirt.

In order to solve the above problems, the present invention is an intermediate strainer device disposed in an exhaust duct between an indoor ventilation port in a building ventilation facility and an exhaust port for exhausting indoor air to the outside of the building. , A connecting portion for connecting to the primary side and the secondary side of the exhaust duct, and a strainer accommodating portion disposed between the connecting portions, and foreign matter enters the strainer accommodating portion from the outside of the building A strainer that is detachably installed, and the strainer housing portion includes a substantially box-shaped housing portion main body and a strainer support member that is provided around the inner peripheral surface of the housing portion main body. As described above, an opening for attaching and detaching the strainer is formed in a part of the outer peripheral surface of the housing main body, and the strainer is attached to and detached from the mesh member in the strainer housing. The strainer is detachably installed in the strainer housing portion through a packing having a size corresponding to at least the opening of the housing portion main body, and the strainer is provided. The support member of the housing portion is constituted by a packing for preventing the strainer from shaking and water leakage of the water trapped by the strainer, and provided with an exhaust fan for exhausting room air to the secondary exhaust duct, A connection joint for connecting a negative pressure operating valve that emits an alarm sound when the inside of the duct is decompressed is provided at a connection portion to the secondary exhaust duct, and the intermediate strainer device is connected to the exhaust duct in the exhaust duct. It is characterized in that it is arranged at a position where maintenance inspection work can be performed from an inspection port provided on the indoor wall.

  According to the intermediate strainer device in the building ventilation system according to the present invention described in detail above, the interior wall between the indoor ventilation port in the ventilation system and the exhaust port for exhausting the room air to the outside of the building. Clean the strainer by disposing an intermediate strainer device in the exhaust duct at a position where maintenance inspection work can be performed from the inspection port provided in the intermediate strainer, and detachably installing the strainer in the strainer housing portion of the intermediate strainer device. Since the occupants can easily work from the room through the inspection port, they can eliminate poor ventilation in the room due to clogging due to foreign substances such as insects and dust adhering to the strainer. Odors and dirt are not deposited on the curtains and wallpaper in the room, and it is possible to prevent the occurrence of condensation and mold. Also, it is possible to suppress the occurrence of water leakage due to dew condensation water remaining in the exhaust duct by the moisture of the indoor air.

1 to 4 show a first embodiment of an intermediate strainer device in a ventilation facility according to the present invention. The intermediate strainer device 2 is connected to an indoor ventilation port E1 and indoor air in an existing ventilation facility outside the building. In the existing exhaust duct D between the exhaust port E2 to be exhausted, the case where it is arranged at a position where maintenance work can be performed from the inspection port W provided in the indoor wall C is shown.
The intermediate strainer device 2 is generally provided with connecting portions 4 and 5 made of metal such as stainless steel or steel for connecting to the primary duct D1 and the secondary duct D2 of the exhaust duct D, respectively. In addition, a strainer accommodating portion 6 made of a metal such as stainless steel or steel is provided between the connecting portions 4 and 5, and a strainer 8 made of a stainless steel mesh member is detachable in the strainer accommodating portion 6. It is configured by installing. Thus, by making the intermediate strainer device 2 simple and compact, the intermediate strainer device 2 can be installed in the exhaust duct D by effectively utilizing the space behind the narrow ceiling such as a bathroom or a washroom. it can.

  The primary side connecting portion 4 connected to the primary side duct D1 has a main portion 4A having a diameter substantially the same as or slightly larger than that of the primary side duct D1, and a primary side duct D1 extending from the main portion 4A. It is configured as an insertion socket provided with a tapered portion 4B having a diameter reduced to a slightly smaller diameter than the duct D1 on the connection end side. The primary side connecting portion 4 has a connecting end formed with a smaller diameter than the primary side duct D1 by the tapered portion 4B inserted into the primary side duct D1, and these connecting portions are heat-resistant tape or adhesive. The primary side connecting portion 4 is connected to the primary side duct D1 by being fixed by a fixing means such as the above.

  On the other hand, the secondary side connecting portion 5 connected to the secondary duct D2 is formed with a main portion 5A having substantially the same diameter as the secondary duct and a larger diameter than the main portion 5A. It is comprised as a pipe joint provided with 5 A of fitting parts 5B connected so that expansion-contraction was possible in the connection direction to the secondary side duct D2. The secondary side connecting portion 5 is configured to fit a fitting portion 5B having a diameter larger than that of the secondary side duct D2 to the outer peripheral surface of the secondary side duct D2, and to the secondary side duct D2 of the fitting portion 5B. After adjusting the expansion and contraction of the connection position, the secondary connection part 5 is connected to the secondary duct D2 by fixing those connection parts with heat-resistant tape or adhesive. ing. The expansion / contraction of the fitting portion with respect to the main portion 5A may be a fitting portion 5B having a cylindrical shape that is closely fitted to the main portion 5A and is fitted to the main portion 5A so that the main portion 5A can be extended or contracted. The joining part 5B and the main part 5A may be connected via a bellows-like elastic member.

  In the present embodiment, the connecting portion 4 to the primary duct D1 is configured as a tapered insertion socket, and the connecting portion 5 to the secondary duct D2 is configured by a telescopic pipe joint. However, the present invention is not limited to this, and when there is a sufficient space for installing the intermediate strainer device 2, both the connecting portions 4, 5 can be formed of telescopic pipe joints. Further, the connection to the exhaust duct D by the pipe joint is particularly effective when the intermediate strainer device 2 is disposed in the existing exhaust duct D, but the intermediate strainer is connected to the exhaust duct D of a newly built building. In the case where the device 2 is arranged, both the connecting parts 4 and 5 can be configured as tapered insertion sockets. Furthermore, the method for fixing the connection portion between each of the connection portions 4 and 5 and the exhaust duct D is not limited to fixing with the above-described heat-resistant tape, adhesive, or the like. For example, the intermediate strainer When the apparatus 2 is fixedly connected to the exhaust duct D, the connecting portions 4 and 5 can be fixed to the exhaust duct D by welding means such as spot welding or laser welding.

As shown in FIGS. 2 and 3, the strainer accommodating portion 6 includes a substantially box-shaped accommodating portion main body 6A connected between the connecting portions 4 and 5, and the connecting portion 4 in the accommodating portion main body 6A. 5 and a supporting member 6B of the strainer 8 provided on the inner peripheral surface along the connection surface to the connecting member 5.
6 A of said accommodating part main bodies form the opening part 6a for the attachment or detachment of the said strainer 8 in the outer peripheral surface along the connection surface to the said connection parts 4 and 5, and the both sides edge of this opening part 6a The flange portions 6b provided with bolt holes 6c for fixing the fixing plate 8D of the strainer 8 to be described later with the butterfly bolt 10 and the nut 12 are respectively extended.
On the other hand, the support member 6B is configured as a packing for preventing the strainer 8 from swaying and preventing moisture captured by the strainer 8 from leaking into the room or downstairs. The support member 6B is attached to the inner peripheral surface excluding the opening 6a in the housing main body 6A.

As shown in FIG. 4, the strainer 8 holds the periphery of a stainless steel mesh member (mesh) 8 </ b> A formed in a substantially rectangular flat plate shape with a frame body 8 </ b> B and holds the strainer 8 on one side. It is configured by fixing to a fixing plate 8D provided with a gripping portion 8C for attaching and detaching from the strainer accommodating portion 6. Further, at both ends of the fixing plate 8D in the longitudinal direction, the strainer 8 is connected to the strainer accommodating portion 6 with a butterfly bolt 10 and a nut at a portion corresponding to the bolt hole 6c provided in the flange portion 6b of the accommodating portion main body 6A. A bolt hole 8 a for fixing at 12 is provided.
Thus, as shown in FIG. 3, the strainer 8 includes the fixing plate 8 </ b> D and the accommodating portion in a state where the packing 14 is interposed between the fixing plate 8 </ b> D and the accommodating portion main body 6 </ b> A in the strainer accommodating portion 6. The strainer accommodating portion 6 is installed by tightening the collar portion 6 b of the main body 6 </ b> A with the butterfly bolt 10 and the nut 12.
The means for fixing the fixing plate 8D of the strainer 8 and the collar portion 6b of the accommodating portion main body 6A is not limited to the above-described means for fastening with the butterfly bolt 10 and the nut 12, and a resident such as a screw with a handle. However, it is possible to employ any appropriate means that allows the strainer 8 to be easily attached and detached.

In addition, the code | symbol 16 in a figure is a negative pressure operation valve for notifying a resident when the said strainer 8 raise | generates clogging temporarily, especially in the exhaust port E2 side of the secondary side duct D2, This is effective in the case where a ventilator for forcibly discharging indoor air to the outside is provided. That is, the negative pressure operating valve 16 is attached to the outer peripheral surface of the secondary side connection portion 5 in the intermediate strainer device 2 via the connection joint 5a, and the strainer 8 is clogged and the secondary side duct D2 is clogged. The exhaust is forcibly exhausted, so that an alarm sound is generated when the pressure in the secondary duct D2 is reduced.
Here, in FIG. 2, the connection joint 4 a of the negative pressure operating valve 16 is also provided on the outer periphery of the primary side connection portion 4, but this does not give direction to the connection of the intermediate strainer device 2. That is, even if any of the connection portions 4 and 5 is connected to the secondary duct D2, the negative pressure operating valve 16 is attached to the connection joints 4a and 5a of the connection portions 4 and 5. It is configured to be able to.

When the intermediate strainer device 2 is disposed in the existing exhaust duct D, first, the exhaust duct D at a position where maintenance work can be performed from the inspection port W provided in the indoor wall C is connected to the intermediate strainer. The length of the apparatus 2 can be cut. Next, the primary side connection portion 4 of the intermediate strainer device 2 is inserted into the primary side duct D1, and the fitting portion 5B in the secondary side connection portion 5 is fitted to the outer peripheral surface of the secondary side duct D2, After adjusting the connection position of the fitting part 5B to the secondary side duct D2, the primary side connection part 4 and the secondary side are fixed by fixing those connection parts with heat-resistant tape or adhesive. The connecting part 5 is connected to the secondary duct D2.
In addition, when it is difficult to perform the work for installation and maintenance inspection of the intermediate strainer device 2 from the existing inspection port W provided in the indoor wall C, a place where a space for performing the work can be secured It is also possible to newly provide an inspection port W in the indoor wall C and to perform work for installation and maintenance inspection of the intermediate strainer device 2 from the inspection port W.

The intermediate strainer device 2 in the ventilation equipment having the above-described configuration is connected to the strainer accommodating portion 6 having a thickness capable of supporting the strainer 8 to the connection portion 4 for connecting to the primary side duct D1 and the secondary side duct D2. , 5 are provided in a simple and compact configuration, so that the inspection provided on the indoor wall C between the indoor ventilation port E1 in the ventilation facility and the exhaust port E2 that exhausts indoor air to the outside of the building. The intermediate strainer device 2 can be disposed in the exhaust duct D at a position where maintenance work can be performed from the opening W by effectively utilizing the space behind the narrow ceiling. In addition, since the strainer 8 can be detachably installed in the strainer accommodating portion 6 of the intermediate strainer device 2, the resident himself can easily clean the strainer 8 from the room through the inspection port W. Therefore, it is possible to eliminate poor ventilation in the room caused by foreign substances such as insects and dust adhering to the strainer 8 and clogging it. As a result, odors and dirt are deposited on the curtains and wallpaper in the room. Or the occurrence of condensation or mold can be reliably suppressed. Furthermore, since the air permeability of the strainer 8 is ensured, it is possible to reliably prevent the occurrence of water leakage into the room or downstairs by the condensation water remaining in the exhaust duct D due to the humidity of the room air.
In particular, when the intermediate strainer device 2 is disposed in the exhaust duct D in a newly built building, the inspection port W of the indoor wall C is directly communicated with the opening 6a of the strainer accommodating portion 6 so that it can be seen from the room. The work for attaching / detaching the strainer 8 and the maintenance inspection can be easily performed.

5 and 6 show a second embodiment of the present invention.
This intermediate strainer device 22 is provided between the connecting portions 4 and 5 that connect the storage portion main body 26A in the strainer storage portion 26 to the primary side and secondary side ducts D1 and D2 of the exhaust duct D. An opening 26a having a door 26B that is openable and closable for attaching and detaching the strainer 28 and maintaining and inspecting the exhaust duct D is provided on one surface of the outer peripheral surface of the accommodating portion main body 26A. Accordingly, the strainers 28, 28 can be detachably installed in both the primary side and secondary side openings in the accommodating portion main body 26A.

  The storage portion main body 26A of the strainer storage portion 26 has flange portions 26b provided with bolt holes 26c at both ends in the longitudinal direction at both side edges of the opening portion 26a, while the door 26B. Bolt holes 26d are respectively provided at portions corresponding to the bolt holes 26c of the flange portion 26b, and a packing 34 is interposed between the accommodating portion main body 26A and the door 26B. The door 26B can be freely opened and closed with respect to the housing portion main body 26A by tightening the corner portions of the flange portion 26b of the housing portion main body 26A and the door 26B with the butterfly bolt 10 and the nut 12. The door 26B is provided with a gripping portion 26C for opening and closing the opening 26a by the door 26B.

  The strainer 28 increases the surface area by forming the mesh member 28A made of stainless steel into a conical shape (conical shape), and the pointed heads 28a are respectively connected to the primary side and secondary side connection portions 4. , 5 is installed in the strainer accommodating portion 26 in a state of projecting to the 5 side. When the strainer 28 is installed in the strainer accommodating portion 26, although not particularly illustrated, a frame that holds the periphery of the mesh member 28A is attached to the opening of the strainer accommodating portion 26 such as a butterfly bolt. It is desirable to install the strainer 28 by means that facilitate the work for attaching and detaching the strainer 28.

The intermediate strainer device 22 for the exhaust duct in the ventilation facility having the above configuration can easily perform the work for attaching and detaching the strainer 28 and the maintenance inspection of the exhaust duct D through the opening 26a of the strainer accommodating portion 26.
In the present embodiment, the surface area is increased by forming the strainer 28 in a conical shape, but the configuration for increasing the surface area of the strainer is not limited to this, and any arbitrary The surface area of the strainer can be increased by forming it into a polygonal pyramid, etc., and the surface area of the strainer can be increased by providing a number of convex parts of any shape or by providing a number of ridges. You can also.

  In particular, when the intermediate strainer device 22 is disposed in the exhaust duct D of a newly built building, the inspection port W of the indoor wall C is directly communicated with the opening 26a of the strainer accommodating portion 26, and the indoor wall By arranging the door 26B to be openable and closable in C, it is possible to easily perform the work for attaching and detaching the strainer 28 and for the maintenance inspection of the exhaust duct D directly from the room.

  Here, since the other configurations and operations of the intermediate strainer device 22 of the second embodiment are substantially the same as those of the first embodiment, it is assumed that the same portions or corresponding portions are denoted by the same reference numerals. The description of is omitted.

It is explanatory drawing which shows typically the state which has arrange | positioned the intermediate strainer apparatus which concerns on 1st Example of this invention in the exhaust duct in ventilation equipment. It is a partial permeation | transmission top view of the intermediate strainer apparatus in the Example. It is the same front view. It is a front view of the strainer in the said intermediate strainer apparatus. It is a top view of the intermediate strainer device concerning the 2nd example of the present invention. It is the same front view.

Explanation of symbols

2,22 Intermediate strainer device 4 Primary side connection part 4a, 5a Connection joint 5 Secondary side connection part 6, 26 Strainer accommodation part 6A, 26A Accommodation part body 6B Support member 6a, 26a Opening part 8, 28 Strainer 8A, 28A Mesh member 8C, 26C Grasping part 14, 34 Packing 16 Negative pressure valve 28a Convex part C Interior wall D Exhaust duct D1 Primary side duct D2 Secondary side duct W Inspection port

Claims (1)

An intermediate strainer device disposed in an exhaust duct between an indoor ventilation port in a building ventilation facility and an exhaust port for exhausting indoor air to the outside of the building,
A connecting portion for connecting to the primary side and the secondary side of the exhaust duct and a strainer accommodating portion disposed between the connecting portions are provided, and foreign matter enters the strainer accommodating portion from the outside of the building. A strainer that prevents the
The strainer accommodating portion has a substantially box-shaped accommodating portion main body and a strainer support member provided around the inner peripheral surface of the accommodating portion main body, and a part of the outer peripheral surface of the accommodating portion main body. An opening for attaching and detaching the strainer is formed, and the strainer is configured by attaching a gripping part for attaching and detaching the strainer to the strainer accommodating portion on the mesh member,
The strainer is detachably installed in the strainer accommodating portion through a packing having a size corresponding to at least the opening of the accommodating portion main body,
The support member of the strainer accommodating portion is constituted by a packing for preventing the strainer from shaking and water leakage of moisture captured by the strainer,
A ventilator for exhausting room air is provided in the secondary exhaust duct, and a negative pressure operating valve that emits an audible alarm when the inside of the duct is decompressed is connected to the secondary exhaust duct. Provide a connection joint to connect,
The intermediate strainer device was disposed at a position where maintenance inspection work can be performed from an inspection port provided on the indoor wall in the exhaust duct.
An intermediate strainer device in a building ventilation system characterized by that.

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