JP2019158213A - Inclination giving member and ventilation sleeve - Google Patents

Abstract

To prevent an indoor side end portion of a ventilation sleeve from inclining downward, and thus prevent rain water and dew condensation water from flowing into an indoor side.SOLUTION: A ventilation sleeve 2 passing through a wall 1 of a building is provided with an inclination giving member 30. An attachment part 34 of the inclination giving member 30 is attached to the wall 1. A holding part 31 connecting to the attachment part 34 holds an inner pipe 20 of the ventilation sleeve 2 in a manner of inclination toward the indoor.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a ventilation sleeve that penetrates a wall of a building and a gradient imparting member provided on the ventilation sleeve, and more particularly to a gradient imparting member that imparts a gradient to an inner pipe of the ventilation sleeve.

  Generally, ventilation ducts are piped in buildings such as houses. The ventilation duct extends from, for example, a kitchen range hood or the like to the outer wall (see Patent Document 1). For example, in patent document 1, the ventilation sleeve is connected to the outdoor side edge part of the ventilation duct. The ventilation sleeve includes an outer sleeve with a hook and an inner tube with a heat insulating layer. An outer sleeve is fitted into a through-hole in the outer wall of the building, and a flange of the outer sleeve is screwed to the outer wall. The internal space of the inner tube with a heat insulating layer housed in the outer sleeve is a ventilation flow path that continues into the ventilation duct.

JP 2014-137154 A

When a ventilation duct is connected to the indoor side end portion of the ventilation sleeve, there is a concern that the indoor side end portion of the inner pipe in the ventilation sleeve is inclined downward due to the weight of the ventilation duct. If it does so, the rain water and condensed water which entered the ventilation flow path of the inner pipe will flow into the indoor side.
The ventilation sleeve has a gradient so that the axis of the outer sleeve tilts upwards indoors when the hook is placed on the vertical outer wall by slightly tilting the axis of the hooked outer sleeve with respect to the orthogonal direction of the hook. Is also known. However, in order to prevent the indoor side end of the inner pipe from facing downward even when receiving the weight of the ventilation duct, it is necessary to set the gradient large.
In view of such circumstances, the present invention prevents the end of the inner side of the inner tube of the ventilation sleeve from being inclined downward due to the weight of the ventilation duct, and thus prevents rainwater and dew condensation from flowing into the indoor side. Objective.

In order to solve the above problems, the present invention is a gradient imparting member provided in a ventilation sleeve that houses an inner tube with a heat insulating layer in an outer sleeve installed in a through-hole of a building wall,
An attachment portion attached to the wall or the outer sleeve;
A holding portion that is continuous with the attachment portion and holds the inner pipe so as to be inclined upward toward the indoor side is provided.

By providing a gradient to the inner tube of the ventilation sleeve by the gradient applying member, it is possible to prevent rainwater and condensed water from flowing into the indoor side.
When the weight of the ventilation duct is applied to the indoor side end portion of the inner pipe of the ventilation sleeve, the load is transferred to the building wall or the outer sleeve via the gradient applying member. When it is delivered to the outer sleeve, it is delivered from the outer sleeve to the building wall. Thereby, the indoor side end of the inner pipe can be prevented from tilting downward, and the set gradient can be maintained. As a result, rainwater and condensed water can be reliably prevented from flowing into the indoor side.
The outer sleeve does not need to have an upward gradient toward the interior, and even if it is inclined, the gradient can be reduced.

It is preferable that the holding portion is disposed between lower portions of the indoor side end portions of the outer sleeve and the inner tube so as to push up the inner tube.
Thereby, the indoor side end part of an inner pipe can be lifted with a gradient provision member, and a gradient can be given.

It is preferable that the holding portion extends along the circumferential direction of the outer peripheral surface of the inner tube.
Thereby, the inner tube can be stably held and can be given a gradient by applying the holding portion over a wide range in the circumferential direction of the inner tube.
It is more preferable that the holding portion has a strip shape that is curved in an arc shape (partial ring) along the circumferential direction of the outer peripheral surface of the inner tube.

It is preferable that the attachment portion includes a pair of attachment piece portions respectively connected to both end portions of the holding portion, and each attachment piece portion is attached to the wall or the outer sleeve.
Accordingly, the gradient imparting member can be stably attached to the wall or the outer sleeve. A holding portion is bridged between the pair of attachment pieces, and the inner tube can be stably held by the holding portion.

It is preferable that the attachment piece portion is connected to a folded portion that is folded from both ends of the holding portion to the outer peripheral side.
The folded portion can be used as a locking portion to the outer sleeve.

In addition, the present invention is characterized by a ventilation sleeve including an outer sleeve installed in a through hole in a wall of a building, an inner pipe with a heat insulating layer accommodated in the outer sleeve, and the gradient imparting member.
It is preferable that a pair of slits is formed at the end of the outer sleeve, and the folded portions at both ends of the gradient imparting member are respectively inserted into the corresponding slits.
Accordingly, the gradient imparting member can be easily positioned and locked with respect to the outer sleeve. As a result, the gradient of the inner pipe can be kept constant, and construction errors can be prevented.

  According to the present invention, it is possible to prevent the indoor side end portion of the inner tube of the ventilation sleeve from being inclined downward. As a result, rainwater and condensed water can be prevented from flowing into the indoor side.

FIG. 1 is a longitudinal sectional view of an outer wall of a building provided with a ventilation sleeve according to an embodiment of the present invention. FIG. 2 is a front view of the ventilation sleeve as viewed from the indoor side. FIG. 3 is an exploded perspective view of the ventilation sleeve. Fig.4 (a) is a top view of the gradient provision member provided in the said ventilation sleeve. FIG. 4B is a front view of the gradient applying member. FIG. 4C is a perspective view of the gradient imparting member. FIG. 5 is a perspective view of a part of the ventilation sleeve installed on the outer wall as viewed from the indoor side. FIG. 6 is a perspective view showing another usage mode of the gradient imparting member, and a part of a ventilation sleeve installed on the outer wall as viewed from the indoor side.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a ventilation sleeve 2 is provided on an outer wall 1 (wall) of a building. A ventilation duct 3 indicated by a two-dot chain line in FIG. 1 extends from a kitchen range hood or the like and is connected to the ventilation sleeve 2.

As shown in FIGS. 2 and 3, the ventilation sleeve 2 includes an outer sleeve 10 and an inner tube 20. The outer sleeve 10 includes an outer sleeve portion 11 and a flange 12. A square-shaped ridge 12 is provided on the outer periphery of a portion near the outdoor side of the outer sleeve portion 11 having a short cylindrical shape.
The material of the outer sleeve portion 11 and the flange 12 is a metal such as galvanized steel, stainless steel, or aluminum.

As shown in FIG. 1, the outer sleeve portion 11 is fitted in the through hole 1 c of the outer wall 1. As a result, the ventilation sleeve 2 penetrates the outer wall 1. The axis of the outer sleeve portion 11 is oriented substantially horizontally. The eaves 12 are screwed to the vertical outdoor side plywood 1 a of the outer wall 1.
The axis of the outer sleeve 11 may be slightly inclined downward toward the outdoor side.

As shown in FIGS. 1 and 2, an inner tube 20 is accommodated in the outer sleeve portion 11.
The inner tube 20 includes an inner sleeve portion 21 and a heat insulating layer 22. The inner sleeve 21 has a cylindrical shape that is longer and smaller in diameter than the outer sleeve portion 11. The inside of the inner sleeve portion 21 is a ventilation flow path 2a. The ventilation channel 2a is connected to the ventilation duct 3. The material of the inner sleeve portion 21 is a metal such as galvanized steel, stainless steel, or aluminum.

As shown in FIG. 2, a heat insulating layer 22 is provided on the outer periphery of the inner sleeve portion 21. The heat insulating layer 22 has a thick annular shape or a cylindrical shape. The heat insulating layer 22 is made of a heat insulating material such as glass wool or glass fiber felt.
As shown in FIG. 1, the outer sleeve portion 11 covers the outer periphery of the heat insulating layer 22. A metal annular waterproof cap 23 is placed on the end of the heat insulating layer 22 on the outdoor side.
As shown in FIG. 3, an annular packing 24 (seal member) is provided on the outer periphery of the portion of the heat insulating layer 22 near the outdoor. The packing 24 is made of a resin such as polyethylene, rubber, or other watertight material. A seal 24 seals between the outer sleeve portion 11 and the heat insulating layer 22.

  As shown in FIG. 3, a gradient imparting member 30 is added to the ventilation sleeve 2. The gradient imparting member 30 is made of a metal such as galvanized steel, stainless steel, or aluminum. More preferably, the gradient imparting member 30 is manufactured by bending a single metal plate punched into a predetermined shape (for example, a U shape).

As shown in FIGS. 4A to 4C, the gradient imparting member 30 includes a holding part 31, a pair of attachment base parts 33, and a pair of attachment piece parts 34. The holding part 31 has a strip shape that is curved in an arc shape (partial ring). As shown in FIG. 2, the curvature of the holding portion 31 is matched to the curvature of the outer peripheral surface of the heat insulating layer 22 of the inner tube 20. As shown in FIG. 4B, the central angle α ₃₁ of the holding portion 31 is preferably about α ₃₁ = 90 ° to 150 °, more preferably about α ₃₁ = 120 °.

  As shown in FIG. 4B and FIG. 4C, the gradient imparting member 30 is folded back approximately 180 ° toward the outer peripheral side of the holding portion 31 at both ends of the holding portion 31, and the folded portion 32 ( (Locking part) is formed. A mounting base portion 33 is connected to both ends of the holding portion 31 via folded portions 32. The attachment base portion 33 has a plate shape that overlaps the outer peripheral side of the holding portion 31. The gap thickness between the holding portion 31 and the mounting base portion 33 is equal to or slightly larger than the thickness of the outer sleeve portion 11.

As shown in FIG. 4, the attachment piece 34 is connected to the indoor side edge of each attachment base 33. Therefore, the attachment piece 34 is connected to both ends of the holding part 31 via the folded part 32 and the attachment base part 33, respectively. The holding portion 31 is bridged between the pair of attachment piece portions 33.
An attachment portion 36 is constituted by the folded portion 32, the attachment base portion 33, and the attachment piece portion 34.

As shown in FIG. 4B and FIG. 4C, the attachment piece portion 34 has a rectangular plate shape orthogonal to the attachment base portion 33. The attachment piece portion 34 projects obliquely downward from the attachment base portion 33 along the radial direction of the holding portion 31. As shown in FIG. 4B, the pair of attachment pieces 34 are arranged so as to form a “C” shape in front view. Each attachment piece 34 is formed with a screw insertion hole 34c.
The attachment piece 34 is disposed at substantially the same position in the indoor / outdoor direction as the indoor edge of the holding portion 31 (upper edge in FIG. 4A). Here, the indoor / outdoor direction refers to a direction connecting the indoor side and the outdoor side of the outer wall 1 (vertical direction in FIG. 4A, horizontal direction in FIG. 1).

As shown in FIGS. 2 and 3, a pair of slits 11 s (locked portions) are formed in the ventilation sleeve 2 in order to attach the gradient imparting member 30. The slit 11s has a cut shape extending from the indoor side end surface of the outer sleeve portion 11 along the axis of the outer sleeve portion 11. The cut length of the slit 11 s is substantially equal to the width dimension of the holding portion 31 of the gradient imparting member 30.
As shown in FIG. 2, the pair of slits 11 s are disposed at symmetrical positions in the lower half of the outer sleeve portion 11. The separation angle between the pair of slits 11 s in the circumferential direction of the outer sleeve portion 11 is substantially equal to the central angle α ₃₁ of the gradient imparting member 30. The separation distance between the pair of slits 11 s is substantially equal to the distance between the pair of folded portions 32 of the gradient imparting member 30.

The gradient imparting member 30 is attached to the ventilation sleeve 2 as follows.
As shown in FIGS. 1 and 2, the holding portion 31 of the gradient imparting member 30 is inserted between lower portions of the indoor side end portions of the outer sleeve 10 and the inner tube 20. As shown in FIGS. 2 and 5, the pair of folded portions 32 are inserted and locked in the corresponding slits 11 s of the outer sleeve 10. Thus, the gradient imparting member 30 is attached to the outer sleeve 10.
Furthermore, as shown in FIG. 5, each attachment piece 34 is addressed to the indoor side surface of the indoor side plaster board 1 d of the outer wall 1. Although detailed illustration is omitted, the screw 35 is driven into the plaster board 1d and the indoor side plywood 1b through the insertion hole 34c. Thus, the pair of attachment pieces 34 are attached to the outer wall 1. As a result, the gradient imparting member 30 is fixed to the outer wall 1.

As shown in FIGS. 1 and 2, the holding portion 31 of the gradient imparting member 30 is bridged so as to connect the pair of slits 11 s of the outer sleeve portion 11, and the central portion of the holding portion 31 is the outer sleeve portion 11. Is slightly lifted from the bottom of the inner wall 20 and pressed against the outer peripheral surface of the heat insulating layer 22 from below, thereby holding the indoor side end of the inner pipe 20 so as to be pushed up. As a result, the inner tube 20 is inclined with respect to the outer sleeve 10 and is inclined so as to incline upward toward the indoor. The gradient of the inner tube 20 is preferably about 1/30 to 1/50, more preferably about 1/40.
The seal between the outer sleeve portion 11 and the heat insulating layer 22 is secured by elastically deforming the packing 24 in accordance with the difference in angle between the outer sleeve portion 11 and the inner tube 20.

In the ventilation sleeve 2, it is possible to prevent rainwater and condensed water from flowing into the indoor side by providing a gradient to the inner tube 20 by the gradient applying member 30.
Moreover, when the weight of the ventilation duct 3 is applied to the indoor end of the ventilation sleeve 2, the load is transferred to the outer wall 1 via the gradient applying member 30. Therefore, it is possible to prevent the indoor side end portion of the inner pipe 20 from being inclined downward. This can more reliably prevent rainwater and condensed water from flowing into the indoor side.
The folding portions 32 (locking portions) at both ends of the gradient applying member 30 are locked to the slits 11 s (locked portions) of the outer sleeve 10, whereby the position of the gradient applying member 30 is fixed with respect to the outer sleeve 10. The As a result, the gradient of the inner tube 20 is determined to be constant. Therefore, it is not necessary for the operator to variably adjust the gradient of the inner pipe 20, and construction errors can be prevented.

FIG. 6 shows another mode of use of the gradient imparting member 30.
In FIG. 6, the gradient imparting member 30 is reversed in the front-rear direction with respect to the modes of FIGS. 1 and 5. For this reason, the attachment piece part 34 is arrange | positioned in the outdoor position of the holding | maintenance part 31 and the substantially the same position in indoor and outdoor direction. The mounting piece 34 is directed to the indoor plywood 1b and is directly fixed to the indoor plywood 1b by screws 35. The attachment piece 34 is sandwiched between the indoor plywood 1b and the indoor gypsum board 1d. Since the width of the holding portion 31 is substantially equal to the thickness of the gypsum board 1d, the position of the holding portion 31 in the indoor / outdoor direction is substantially the same as the mode of FIGS.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, the gradient imparting member may be provided on the outdoor side portion of the ventilation sleeve 2. The holding portion may be sandwiched between the upper portions of the outdoor side end portions of the outer sleeve 10 and the inner tube 20 to push down the outdoor side end portion of the inner tube 20.
The holding portion of the gradient imparting member may be in the form of a spacer interposed between the outer sleeve 10 and the inner tube 20.
The attachment portion 36 of the gradient imparting member may be directly attached to the wall 1 without going through the outer sleeve 10.
Conversely, the attachment portion 36 of the gradient imparting member may be attached only to the outer sleeve 10 without being attached to the wall 1. For example, the attachment portion 36 may be fixed to the outer sleeve 10 by screwing or welding. The load of the ventilation sleeve 2 may be transmitted to the wall 1 via the gradient imparting member and the outer sleeve 10.

  The present invention can be applied, for example, to duct equipment for ventilation of buildings.

1 outer wall (wall)
1a Outdoor plywood 1b Indoor plywood 1c Through hole 1d Indoor gypsum board 2 Ventilation sleeve 2a Ventilation flow path 3 Ventilation duct 10 Outer sleeve 11 Outer sleeve part 11s Slit (locked part)
12 鍔 20 Inner tube 21 Inner sleeve portion 22 Thermal insulation layer 23 Waterproof cap 24 Packing 30 Gradient imparting member 31 Holding portion 32 Folding portion (locking portion)
33 Mounting base portion 34 Mounting piece portion 34c Screw insertion hole 35 Screw 36 Mounting portion α ₃₁ Center angle

Claims (7)

A gradient imparting member provided in a ventilation sleeve that houses an inner tube with a heat insulating layer in an outer sleeve installed in a through hole of a building wall,
An attachment portion attached to the wall or the outer sleeve;
A gradient applying member comprising: a holding portion that is continuous with the mounting portion and holds the inner pipe so as to be inclined upward toward the indoor side.   The said holding | maintenance part is inserted between the lower parts of the indoor side edge part of the said outer sleeve and the said inner tube, and is arrange | positioned so that the said inner tube may be pushed up. Gradient imparting member.   The gradient imparting member according to claim 1, wherein the holding portion extends along a circumferential direction of an outer peripheral surface of the inner tube.   The gradient applying member according to claim 3, wherein the attachment portion includes a pair of attachment piece portions respectively connected to both end portions of the holding portion, and each attachment piece portion is attached to the wall or the outer sleeve.   The gradient imparting member according to claim 4, wherein the attachment piece portion is connected to a folded portion that is folded from the both ends of the holding portion to the outer peripheral side.   The outer sleeve installed in the through-hole of the wall of a building, the inner pipe with the heat insulation layer accommodated in the said outer sleeve, and the gradient provision member in any one of Claims 1-5 Ventilation sleeve featuring. A pair of slits are formed at the end of the outer sleeve,
The ventilation sleeve according to claim 6, wherein folded portions at both ends of the gradient imparting member according to claim 5 are respectively inserted into the corresponding slits.

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