JP5516061B2 - Ventilation pipe unit - Google Patents

Description

  The present invention relates to a ventilation pipe unit constructed on a wall of a building.

  Conventionally, what was described in patent documents 1 and 2 is known as an example of this kind of ventilation pipe.

  Hereinafter, the ventilation pipe will be described with reference to FIG.

  As shown in the drawing, in the building, an outer wall 101, an outer board 102, and an inner board 103 are mainly arranged, and a heat insulating material 104 is arranged between the outer board 102 and the inner board 103. A space between the outer wall 101 and the outer board 102 is a ventilation layer S, and a space between the outer board 102 and the inner board 103 is a heat insulating layer M. The ventilation layer S communicates with the outdoor 105 and is a layer containing moisture. In order to prevent the moisture from leaking to the heat insulating layer M side, a moisture-proof sheet 106 is attached to the outer board 102 to protect the heat insulating material 104 of the heat insulating layer M from containing water. In the building, in order to ventilate room air, a pipe 107 is provided in the wall, and the outdoor 105 and the room 108 are communicated to form a ventilation path. In order to install the pipe 107, a hole is made in the outer board 102 on which the moisture-proof sheet 106 is stretched, and the pipe 107 is passed through and fixed to the outer board 102. At this time, since a gap is generated between the outer board 102 and the pipe 107, the tape 110 is stuck on the construction site so as to fill the gap between the flange portion 109 of the pipe 107 and the outer board 102, thereby preventing the gap. It was. As the conventional ventilation pipe, a ventilation pipe (Patent Document 1) in which the flange 109 and the pipe 107 are separated and a ventilation pipe (Patent Document 2) in which the flange 109 and the pipe 107 are integrated are known. The tape 110 is attached to the gap between the moisture-proof sheet 106 attached to the outer board 102 and the flange 109, and the tape 111 is attached to prevent the gap between the flange 109 and the ventilation pipe 107. In the latter case, the tape 110 is attached to the gap between the moisture-proof sheet 106 attached to the outer board 102 and the flange 109 to close the gap.

Japanese Patent Laid-Open No. 2005-61080 JP-A-9-177299

  Such a conventional vent pipe is usually provided with holes in the vicinity of the four corners of the flange 109, and is fixed to the outer board 102 with wood screws 112 from these holes, but since the surface of the flange 109 is relatively large, The accuracy of 109 flatness is required, and it is difficult to produce the required flatness with conventional resin molding.

  Further, for this reason, the portion between the wood screws 112 and the wood screws 112 (near the center of the flange) has a small force (surface pressure) for suppressing the flange 109 by the wood screws 112, and even if the flange 109 is fixed with the wood screws 112, it does not securely come into close contact Therefore, the tape 110 was stuck on the spot to close the gap. However, there is a possibility that variation in work may occur when applying the tape. If the tape 110 is not firmly and closely attached due to work variations, or if the tape work is forgotten, moisture in the ventilation layer S leaks from the gap between the flange 109 and the moisture-proof sheet 106 and the heat insulating material 104 in the heat insulating layer M is leaked. Has a problem that it contains moisture and damages the heat insulating material 104.

  Further, since a gap is also generated between the pipe 107 and the hole of the inner board 103, the gap between the inner board 103 and the pipe 107 is filled with a caulking material 113 to prevent airtightness. This is to prevent moisture in the room from leaking moisture such as humidity from the periphery of the pipe 107 to the heat insulating material 104 in the heat insulating layer M. In this way, when installing a ventilation pipe in the wall to form a ventilation path, processing for gap prevention such as tape application and caulking work is performed at the construction site. At the same time as forgetting, construction work such as checking the work occurred.

  In addition, the conventional ventilation pipe having a structure in which the pipe 107 and the flange 109 are integrally formed is mainly formed of a resin material, and this type of ventilation pipe is usually made by using an injection molding machine. The flange 109 is larger than the flange 107, and the flange 109 protrudes largely in a direction substantially perpendicular to the axial direction of the pipe 107. Therefore, a large mold is required for molding the product, and the ventilation pipe is expensive. There was no vent pipe with a large slope on the outdoor side so that the water in the pipe could be effectively discharged to the outside.

  The present invention solves such a conventional problem, and when the ventilation pipe is attached, the moisture in the ventilation layer and the humidity in the room are not subjected to tape sticking, caulking or the like on site. To provide a ventilation pipe unit that can prevent leakage to the heat insulating layer side and can be attached to the outer board with the pipe inclined to the outside side so that the water in the pipe effectively flows outdoors. For the purpose.

  And in order to achieve this object, the present invention has a pipe comprising a flange portion inclined with respect to the axial direction of the cylindrical portion, a through hole in the center portion, and the outer periphery of the through hole on the outer periphery. A ventilation pipe having a flange having a step portion corresponding to the flange portion, a sleeve having a hole with a hole in the center and having flexibility, an outer diameter dimension larger than the inner diameter of the pipe, and the flange with respect to the sleeve And a bush formed integrally with a ring-shaped annular portion that is inclined similarly to the portion, and when the ventilation pipe is attached to an outer board provided inside the outer wall through the flange, A flange portion is in intimate contact with the stepped portion and the outer board, and the bush is inserted into the ventilation pipe from an inner board that is a wall surface of the room. Due to the expected eye It is intended to achieve.

  According to the present invention, when the ventilation pipe is attached, it is possible to prevent moisture in the ventilation layer and moisture in the room from leaking to the heat insulation layer side without applying tape, caulking or the like on site. It is an object of the present invention to provide a ventilation pipe unit that can be attached to an outer board in a state in which the pipe is inclined so as to be directed downward to the outdoor side so that water in the pipe effectively flows outdoors.

Sectional drawing which shows the installation state of the ventilation pipe unit of Embodiment 1 of this invention The perspective view which shows the component structure of the ventilation pipe unit Sectional view showing the configuration of the ventilation pipe unit Sectional drawing which shows the installation state of the ventilation pipe unit of Embodiment 2 of this invention Sectional drawing which shows the water receiving groove | channel of the ventilation pipe unit of Embodiment 3 of this invention Sectional drawing which shows the water receiving groove of the ventilation pipe unit of the ventilation pipe Sectional drawing which shows the installation state of the ventilation pipe unit of Embodiment 4 of this invention Sectional drawing which shows the installation state of the ventilation pipe unit of Embodiment 5 of this invention Sectional drawing which shows the installation state of the ventilation pipe unit of Embodiment 6 of this invention Sectional drawing which shows the cylinder part of the ventilation pipe unit Sectional view showing the state of conventional vent pipe installation

Passing the gas pipe unit of the present invention includes a pipe made of a flange portion provided to be inclined with respect to the axial direction of the cylindrical portion, a through hole in its central portion, corresponding to the flange portion on the outer periphery of the through-hole A vent pipe with a flange with a stepped part, and a flexible material with a hole in the center, and a sleeve with an outer diameter larger than the inner diameter of the pipe and the sleeve is inclined like the collar part A bush integrated with a ring-shaped ring-shaped portion, and the vent pipe passes the flange through the pipe and is attached to an outer board provided on the inner side of the outer wall. And the bush is inserted into the ventilation pipe from the inner board, which is an indoor wall surface, and the ventilation pipe is attached. When Pipes can be used to prevent moisture in the ventilation layer and indoor moisture from leaking to the heat insulation layer without tapeing or caulking on site, and to allow the water in the pipe to flow effectively outdoors. It is possible to attach to the outer board so as to be largely inclined toward the outdoor side.

  Further, the material of the ventilation pipe may be a heat resistant resin. As a result, the vent pipe is not deformed by heat even in the case of exhaust at a high temperature, so that it can be used even in the exhaust of a kitchen range hood.

  In addition, the cylindrical portion has a substantially Z-shape including an indoor cylindrical portion, a vertical cylindrical portion, and an outdoor cylindrical portion so that the indoor cylindrical portion is on the upper side and the outdoor cylindrical portion is on the lower side. It is good also as a structure attached to an outer side board. Thus, even when rainwater enters the ventilation pipe when the wind is particularly strong, it is possible to prevent the rainwater from rising in the vertical cylindrical portion, so that it is possible to prevent water from entering the indoor side.

  The pipe may be formed by blow molding. This produces an effect that the pipe can be manufactured at a low cost even if the pipe has a complicated shape (a complicated shape in which the pipe shape is substantially Z-shaped even if the pipe is provided with a flange).

  Moreover, you may provide the water-receiving groove | channel which flows toward the bottom from the indoor side to the outdoor side in the inner wall of a cylinder part. Thereby, since the dew condensation water produced on the inner wall of the ventilation pipe flows to the outdoor side along the water receiving groove, it is possible to prevent the dew condensation water from flowing to the indoor side.

  Further, the angle of the water receiving groove may be within the range of 5 ° to 20 ° with respect to the surface of the collar portion. As a result, the condensed water flows to the lower end of the cylindrical part without coming off the water receiving groove, and the condensed water that has flowed to the lower end has a component that flows in the direction of the outdoor side, so that the condensed water flows to the indoor side. There is an effect that it can be prevented.

  The width of the water receiving groove may be configured such that the upper side of the cylindrical part is narrow and the lower side of the cylindrical part is wide. As a result, the condensed water can be prevented from overflowing from the water receiving groove, and the condensed water can be prevented from flowing into the indoor side.

  Moreover, it is good also as a structure which closed the edge part of the indoor side cylinder part of a pipe, and had an opening above the indoor side cylinder part. As a result, the temperature of the attic can be reduced, and even if rainwater enters the ventilation pipe, the end of the cylindrical portion on the indoor side is closed, so that dripping of water into the attic is prevented. There is an effect that can be.

  Further, the outer pipe portion of the vent pipe has a male thread groove on the outer periphery, a base having an opening hole substantially larger than the outer diameter of the outdoor pipe portion, a hood that covers the base, and the base. A configuration in which an outdoor hood consisting of a base fixing ring having a female thread groove on the inside can be fixed to the vent pipe so that it can be screwed with the male thread groove of the outdoor side cylinder portion of the vent pipe to be fixed to the outer wall It is good. Thereby, when attaching an outdoor hood, since it can attach without opening the hole for fixing an outdoor hood to an outer wall, there exists an effect that it can prevent that an outer wall is damaged by frost damage etc.

  Also, a pipe provided with a plurality of grooves inclined at an angle perpendicular to the axial direction of the cylinder part on the outer periphery of the cylinder part, and a flange formed with a flexible material and having an inner diameter slightly smaller than the diameter of the groove A flange having a through hole at the center and a stepped portion on the outer periphery of the through hole, and the flange is engaged so as to fit into the groove at an arbitrary position of the cylindrical portion, and the flange is It is good also as a structure of the ventilation pipe characterized by making the said collar closely_contact | adhere to the said level | step-difference part and the said outer side board, when passing through a cylinder part and attaching to an outer side board.

  As a result, the hook can be engaged so as to fit into the groove at an arbitrary position of the cylindrical portion, and the hook position becomes the fixing position of the flange, so that various wall thicknesses can be handled in the field, and the construction management becomes easy. . Moreover, since the part which a heel and a cylinder part contact is closely_contact | adhered, there exists an effect that the water | moisture content in a ventilation layer can be prevented from leaking into a heat insulation layer.

  Moreover, it is good also as a structure which provided the cut of several V shape in the outer periphery of a cylinder part.

  Thereby, there exists an effect that a cylinder part can be easily cut in arbitrary positions, and can be cut with good appearance.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIGS. 1 to 3, the pipe 3 is composed of a flange portion 2 that is inclined with respect to the axial direction of the cylindrical portion 1, and has a through hole 4 in the center portion. A vent pipe 8 having a flange 6 having a stepped portion 5 corresponding to the portion 2 and a hole 9 in the center are made of, for example, a rubber-based material having a larger outer diameter than the inner diameter of the pipe 3. A bush 10 is integrally provided with a sleeve 10 and a ring-shaped annular portion 11 which is inclined with respect to the sleeve 10 in the same manner as the flange portion 2. The ventilation pipe 8 passes the flange 6 through the pipe 3, and the outer wall. 15, the flange 2 is brought into close contact with the stepped portion 5 and the outer board 7, and the bush 12 is inserted into the ventilation pipe 8 from the inner board 13 which is the wall surface of the room 18. It is set as the structure of the ventilation pipe unit 14 characterized by this The annular portion 11 has a thin thickness of about 1 mm.

  The material of the ventilation pipe 8 is a heat resistant resin.

  The ventilation pipe unit 14 in the above configuration is attached to a building as follows.

  FIG. 1 shows the structure of a building wall. An outer board 7 (structural plywood) is disposed on the inner wall 18 side of the outer wall 15 with a gap L for ventilation to form a ventilation layer 17 of the building. A heat insulating material 19 is disposed on the inside 18 side of the outer board 7, and a heat insulating layer 20 is formed. An inner board 13 (gypsum board) is stretched on the indoor 18 side of the heat insulating material 19.

  A moistureproof sheet 21 is stretched on the outdoor board 16 side of the outer board 7 to prevent moisture in the ventilation layer 17 between the outer wall 15 and the outer board 7 from going to the heat insulating material 19 in the heat insulating layer 20. Yes. In the building, a ventilation pipe 8 is installed in the wall so that the outdoor 16 and the room 18 communicate with each other for ventilation in the room. An outdoor hood 22 is installed on the outer wall 15 on the outdoor 16 side of the ventilation pipe 8, and a ventilation fan 23 is installed on the inner board 13 on the indoor 18 side of the ventilation pipe 8.

  As a construction procedure for attaching the ventilation pipe 8, the ventilation pipe 8 through which the flange 6 is passed through the pipe 3 and the moisture-proof sheet 21 are attached to the pipe 3 before the outer wall 15 and the inner board 13 are installed. Pass through the hole. The flange 6 has a fixing hole 24 for fixing to the outer board 7, and the flange 6 is fixed to the outer board 7 by screwing a wood screw 25 into the fixing hole 24.

  At this time, since the flange 6 of the flange 2 is fastened to the outer board 7 by the wood screw 25, the flange 2, the flange 6 and the outer board 7 are brought into close contact with each other. The closeness degree is such that the surface of the flange 2 on the flange 6 side and the surface of the stepped portion 5 of the flange 6 are in close contact with each other, and the surface of the flange 2 on the outer board 7 side and the hole of the outer board 7 Since the surfaces surrounding each other are in intimate contact with each other, the contact area is large, so that a gap is hardly formed and airtightness can be maintained.

  For this reason, in the construction which installs the ventilation pipe 8, since the clearance gap between the outer board 7 and the ventilation pipe 8 can be prevented only by fixing the ventilation pipe 8 to the outer board 7, it is not necessary to perform a tape sticking process. As a result, gaps with stable quality can be prevented, and construction can be saved.

  After that, the outer wall 15 with a hole is disposed, and the outdoor hood 22 is attached. Moreover, the heat insulating material 19 is arrange | positioned at the room | chamber interior 18 side of the outer side board 7, and the inner side board 13 which opened the hole is arrange | positioned. Then, the bush 12 is inserted into the ventilation pipe 8 from the hole of the inner board 13. Since the bush 12 is made of a flexible material, the outer periphery of the sleeve 10 of the bush 12 and the inner wall 26 of the pipe 3 are in close contact with each other, so that a gap between the outer periphery of the sleeve 10 and the inner wall 26 of the pipe 3 does not occur.

  Usually, the diameter of the hole of the inner board 13 is processed to be larger than the outer diameter of the pipe 3, and there is a gap between the pipe 3 and the hole of the inner board 13, but the bush 12 is inserted into the pipe 3 so that the bush By covering the twelve sleeves 10 and the annular portion 11, the gap can be closed. Thereby, moisture in the room 18 can be prevented from leaking into the heat insulating layer 20, and the heat insulating material 19 can be prevented from being damaged by sucking moisture.

  In this way, since the gap can be prevented without performing the process of filling the gap between the inner board 13 and the pipe 3 with the caulking material, it is possible to prevent the gap with stable quality and to realize the saving work. Next, the wallpaper 27 is put on the room 18 side of the inner board 13. Since the annular portion 11 of the bush 12 has a circular shape and is thin, even if the wallpaper 27 is stretched from the top of the bush 12, the wallpaper 27 does not wrinkle. Then, a ventilation fan 23 or the like is installed from the room 18 to the pipe 3. When installing the outdoor hood 22 or the ventilation fan 23 on the pipe 3, a force may be applied to the pipe 3 in the axial direction of the pipe 3, but the ventilation pipe 8 is sandwiched between the flange 6 and the outer board 7. It does not move because it is fixed.

  Further, since the pipe 3 is inclined with respect to the collar part 2 and is attached so that the outdoor 16 side is inclined downward, the condensed water 28 is generated even when the condensed water 28 is generated on the inner wall 26 of the pipe 3 during ventilation. Can be prevented from flowing into the room 18.

  In addition, since the vent pipe 8 is made of heat-resistant resin, even when exhausting at a high temperature, the vent pipe is not deformed by heat, so that it can be used for exhausting a kitchen range hood.

(Embodiment 2)
As shown in FIG. 4, the cylindrical portion 1 </ b> A has a substantially Z-shape including an indoor side cylindrical portion 29, a vertical direction cylindrical portion 30, and an outdoor side cylindrical portion 31, and the indoor side cylindrical portion 29 is on the upper side, and the outdoor side cylindrical portion. It is set as the structure attached to the outer side board 7 so that 31 may become a lower side.

  The pipe 3A is formed by blow molding.

  Since the construction method of a ventilation pipe is performed in the same way as Embodiment 1, the description about a construction method is abbreviate | omitted.

  An outdoor hood 22 is installed on the outdoor 16 side of the ventilation pipe installed on the wall. However, when a strong wind and rain such as a typhoon occurs, raindrops 32 enter the pipe 3A from the outdoor hood 22. There is. When the wind 33 is particularly strong, the raindrop 32 that has entered from the outdoor side cylinder portion 31 flows toward the indoor 18 side with the force of the wind 33 even if the pipe 3A is inclined toward the outdoor 16 side. Since the vertical cylindrical portion 30 does not rise upward, even if raindrops 32 enter the pipe 3A, water can be prevented from entering the indoor 18 side.

  In addition, since blow molding can be manufactured at low cost even if the pipe has a complicated shape, it can be manufactured even in a complicated shape such that the pipe shape is substantially Z-shaped, even if a ridge is provided on the pipe.

(Embodiment 3)
As shown in FIGS. 5 to 6, a water receiving groove 34 is provided on the inner wall 26 of the cylindrical portion 1 </ b> B so as to flow from the indoor 18 side to the outdoor 16 side from top to bottom.

  Further, the water receiving groove 34 forms an angle θ with respect to the surface of the flange portion 2 and is inclined toward the room 18 at the upper part of the cylinder, and the range of the angle θ is 5 ° to 20 °.

  The width of the water receiving groove 34 is characterized in that the upper side of the cylindrical part 1B is narrow and the lower side of the cylindrical part 1B is wide.

  Since the cylindrical portion 1B communicates the indoor 18 and the outdoor 16, dew condensation occurs on the inner wall 26 of the cylindrical portion 1B when the temperature difference between the temperature of the indoor 18 and the outdoor 16 is large. Since the condensed water 28 generated by the condensation flows toward the outdoor 16 side along the water receiving groove 34, it is possible to prevent the condensed water 28 generated on the inner wall 26 of the cylindrical portion 1B from flowing toward the indoor 18 side.

  Further, since the angle θ of the water receiving groove 34 is in the range of 5 ° to 20 ° with respect to the surface of the flange portion 2, the dew condensation water 28 adhering to the inner wall 26 of the cylindrical portion 1 B is along the water receiving groove 34. It flows to the outdoor 16 side. In particular, since the angle of the water receiving groove 34 is 20 ° or less, the dew condensation water 28 flows to the lower end of the cylindrical portion 1B without being detached from the groove. Since the dew condensation water 28 that has flowed to the lower end has an inclination of 5 ° or more with respect to the flange 2, the dew condensation water 28 that has flowed to the lower end is effective in the direction toward the outdoor 16 side. Therefore, it does not flow toward the room 18 side, and the dew condensation water 28 can be prevented from flowing into the room 18.

  Further, since the width of the water receiving groove 34 becomes wider toward the lower side of the cylindrical portion 1B, the condensed water 28 attached to the entire inner wall 26 of the cylindrical portion 1B flows downward, and the condensed water 28 on the entire inner wall 26 flows. However, as the water goes down, the width of the water receiving groove 34 increases, so that the condensed water 28 can be prevented from overflowing from the groove, and the condensed water 28 flows to the indoor 18 side. Can be prevented.

  Thus, a small drop of condensed water 28 generated in the cylinder portion 1B adheres to the inner wall of the pipe 3 due to the surface tension. Then, one drop of condensed water 28 enters the water receiving groove 34. The condensed water 28 flows downward along the water receiving groove 34 without falling off the groove due to the surface tension between the condensed water 28 and the inner wall of the pipe 3. When each drop of condensed water 28 collects in the water receiving groove 34, the condensed water 28 combined with each drop of water increases its own weight, so that the speed of the condensed water 28 flowing down increases. In particular, if the water flow angle θ is 5 ° to 20 °, the water does not fall off the groove 3 and drop due to the synergistic effect of the flow velocity depending on the angle and the surface tension between the condensed water 28 and the inner wall of the pipe 3. It flows to the lower end of and flows to the outdoor 16 side. Further, since the width of the water receiving groove 34 becomes wider as it goes down, the condensed water is prevented from overflowing from the groove and falling vertically.

(Embodiment 4)
As shown in FIG. 7, the pipe 3 </ b> C is formed by the flange 2 provided to be inclined with respect to the axial direction of the cylindrical portion 1 </ b> C, and the through hole 4 is provided at the center, and the flange 2 is provided on the outer periphery of the through hole 4. A ventilation pipe 8C provided with a flange 6 having a corresponding stepped portion 5, a sleeve 10A having an inner diameter smaller than the outer diameter of the pipe 3C, and a ring-shaped circle inclined with respect to the sleeve 10A in the same manner as the flange portion 2. The ventilation pipe 8C is provided with a bush 12A integrated with the ring portion 11A. When the flange 6 passes through the pipe 3C and is attached to the outer board 7 provided on the inner side of the outer wall 15, the flange portion 2 and the step portion 5 are provided. The bush 12A is in close contact with the outer board 7, and the bush 12A is inserted into the outer periphery of the vent pipe 8C from the inner board 13 which is the wall surface of the attic, and the indoor side cylinder portion 29B of the pipe 3C. Closing the end 35 of the It has a configuration having an opening 36 on the upper side of the inner tubular portion 29B.

  The ventilation pipe 8 </ b> C is attached so as to communicate with the attic space 37 and the outdoor 16. The construction method for the outer board 7 is performed in the same manner as in the first embodiment.

  The bush 12A is inserted from the inner board 13 side so as to cover the cylinder of the ventilation pipe 8C, and is pushed into the base so that the annular portion 11A is in close contact with the inner board. In the attic space 37, the temperature of the attic space 37 is increased in the summer when the roof is exposed to sunlight, but the temperature of the attic space 37 is high because the ventilation pipe 8C communicates with the attic space 37 and the outdoor 16. Since air passes through the inside of the ventilation pipe 8C from the opening 36 on the indoor side cylindrical portion 29B of the attic space 37, passes through the opening 38 of the outdoor side cylindrical portion 31B, and escapes to the outdoor 16 from the outdoor hood 22, the attic space The temperature of 37 can be reduced. In addition, when strong wind and rain such as a typhoon occurs, even if raindrops 32 enter the ventilation pipe 8C from the outdoor hood 22, the end 35 of the indoor cylindrical portion 29B is closed, so the attic Since water does not drip into the space 37 and the ventilation pipe 8C is inclined and attached to the outdoor 16 side, the raindrop 32 is discharged to the outdoor 16 side, and the inside of the ventilation pipe 8C. There is no accumulation of water. Thus, rainwater can be prevented from being blown and the temperature of the attic space can be reduced.

(Embodiment 5)
As shown in FIG. 8, the base 40 has a male screw groove 39 on the outer periphery of the outdoor side cylindrical portion 31C of the ventilation pipe 8D, and has an opening hole substantially larger in the center than the outer diameter of the outdoor side cylindrical portion 31C. In order to fix the hood 41 covering the base 40 and the base 40 to the outer wall 15, a base fixing ring having a female screw groove 42 on the inner side so that it can be screwed with the male screw groove 39 of the outdoor side cylindrical portion 31 </ b> C of the ventilation pipe 8 </ b> D. The outdoor hood 22A consisting of 43 can be fixed to the ventilation pipe 8D.

  The construction method of the ventilation pipe 8D having the above configuration is the same as that of the first embodiment, and the ventilation pipe 8D is fixed to the outer board 7. At that time, the end portion 44 of the outdoor side cylindrical portion 31C of the ventilation pipe 8D is installed so as to protrude from the outer wall surface 45 to the outdoor 16 side by about 15 mm to 30 mm.

  The base fixing ring 43 has a ring-shaped circular flange portion 53 on the outer periphery of the female screw groove 42.

  And when it inserts so that the outdoor side cylinder part 31C of ventilation pipe 8D may pass in the opening hole of the base 40, and the base fixing ring 43 is screwed by the part of the external thread groove 39 of the outdoor side cylinder part 31C of ventilation pipe 8D. The circular flange 53 abuts on the base seat surface 54 at the substantially center of the base 40, and the base 40 is fixed to the outer wall 15 by being pressed. The hood 41 is fixed to the base 40 with a fixing screw 46. Thus, when the outdoor hood 22A is fixed to the outer wall 15, it can be fixed to the outer wall without using screws such as wood screws. When fixing a conventional outdoor hood to a wall, the outdoor hood is fixed by screwing a wood screw into the wall. In this case, although it depends on the type of the outer wall material in the cold region, moisture enters from the screwed screw portion, and the moisture may freeze inside the outer wall material to damage the outer wall material (frost damage). In this attachment structure, when the outdoor hood is attached, it can be attached without making a hole in the outer wall, so that the outer wall can be prevented from being damaged by frost damage or the like.

(Embodiment 6)
As shown in FIG. 9, a pipe 3 </ b> E provided with a plurality of grooves 47 inclined at an angle perpendicular to the axial direction of the cylinder portion 1 </ b> E on the outer periphery of the cylinder portion 1 </ b> E, and molded from a flexible material, A flange 48 having a slightly smaller inner diameter, and a flange 6 having a through hole 4 in the central portion and a stepped portion 5 corresponding to the flange 48 on the outer periphery of the through hole 4, the flange 48 of the cylinder portion 1E. It is engaged so as to fit in a groove 47 at an arbitrary position, and when the flange 6 is passed through the tube portion 1E and attached to the outer board 7, the flange 48 is in close contact with the step portion 5 and the outer board 7. The ventilation pipe 8E is configured.

  Further, as shown in FIG. 10, a plurality of V-shaped cuts 49 are provided on the outer periphery of the cylindrical portion 1E.

  According to this configuration, the ventilation pipe 8E can be adapted to various wall thicknesses by arbitrarily adjusting the position of the flange 6. For example, if the thickness of the outer wall 15 is W, and the gap between the outer wall 15 and the outer board 7 is L, the position Z of the flange 6 from the outdoor side cylinder end 51 of the ventilation pipe 8D is approximately W + L + the dimension P of the base 40 of the outdoor hood 22. There must be.

  In the vent pipe of the sixth embodiment, the flange 48 is engaged with the cylinder portion 1E so as to be in the Z position, the flange 6 is passed through the pipe 3E and fixed to the outer board 7, and the outdoor side cylinder end 51 is outdoors. It can be arranged at an appropriate position of the base 40 of the hood 22.

  Further, if the length of the pipe 3E is cut to a required length in advance, the indoor side cylinder end 52 is positioned at an appropriate position with respect to the inner board 13 when the ventilation pipe 8E is fixed to the outer board 7. Can be constructed. Furthermore, since the V-shaped notch 49 is provided on the outer periphery of the cylindrical portion 1E, the thickness of the cylindrical portion 1E is thin at the portion of the notch 49, and if the cutter blade is inserted into the notch 49 for one round, The cylindrical portion 1E can be easily cut. If the cylindrical portion 1E is cut in this way, the outdoor side cylinder end 51 can be cut so as to be parallel to the base 40, and the indoor side cylinder end 52 can be cut so as to be parallel to the inner board 13. The appearance of the cut of the cylindrical portion 1E is improved.

  In this way, even if the wall has various dimensions, the flange of the ventilation pipe can be adjusted arbitrarily at the construction site, so the manufacturer of the ventilation pipe prepares a ventilation pipe with dimensions according to the thickness of the wall. Only one ventilation pipe need be prepared. In addition, since the installer can arbitrarily adjust the flange position at the construction site, it is only necessary to purchase one kind of ventilation pipe, so that construction management becomes easy. In addition, since the thread groove part is made of a flexible material, the part where the collar and the pipe are screwed or engaged is in close contact, preventing moisture from the ventilation layer from leaking into the heat insulation layer it can.

  The vent pipe unit according to the present invention can prevent moisture in the vent layer and indoor moisture from leaking to the heat insulating layer without applying tape, caulking, etc. in the field. It is useful as a ventilation pipe used for the ventilation hole of a ventilation fan because it allows the pipe to be attached to the outside board with a large inclination so as to flow downward outdoors so that it can flow effectively outdoors. It is.

DESCRIPTION OF SYMBOLS 1 cylinder part 1A cylinder part 1B cylinder part 1C cylinder part 1E cylinder part 2 collar part 3 pipe 3A pipe 3C pipe 3E pipe 4 through-hole 5 step part 6 flange 7 outer board 8 ventilation pipe 8C ventilation pipe 8D ventilation pipe 8E ventilation pipe 9 Hole 10 Sleeve 10A Sleeve 11 Ring portion 11A Ring portion 12 Bush 12A Bush 13 Inner board 14 Ventilation pipe unit 15 Outer wall 16 Outdoor 18 Indoor 22, 22A Outdoor hood 26 Inner wall 29 Indoor side cylindrical portion 29B Indoor side cylindrical portion 30 Vertical direction Cylindrical portion 31 Outdoor side cylindrical portion 31B Outdoor side cylindrical portion 31C Outdoor side cylindrical portion 34 Water receiving groove 35, 44 End portion 36 Opening 38 Opening 39 Male thread groove 40 Base 41 Hood 42 Female thread groove 43 Base fixing ring 47 Groove 48 ４９ 49 Notch

Claims (11)

A pipe having a flange portion inclined with respect to the axial direction of the cylinder portion, and a flange having a through hole in the center portion and a step portion corresponding to the flange portion on the outer periphery of the through hole. A vent pipe, a sleeve having a hole and having flexibility in the center, an outer diameter larger than the inner diameter of the pipe, and a ring-shaped annular portion inclined with respect to the sleeve in the same manner as the flange portion. The vent pipe has a surface that faces the step portion and the outer board when the flange passes through the pipe and is attached to an outer board provided inside the outer wall. The ventilation pipe unit is characterized in that the bush is inserted into the ventilation pipe from an inner board which is an indoor wall surface. The ventilation pipe unit according to claim 1, wherein the material of the ventilation pipe is a heat-resistant resin. The cylindrical part has a substantially Z-shape consisting of an indoor cylindrical part, a vertical cylindrical part, and an outdoor cylindrical part, and the outer board so that the indoor cylindrical part is on the upper side and the outdoor cylindrical part is on the lower side. The ventilation pipe unit according to claim 1 or 2, wherein the ventilation pipe unit is configured to be attached to the ventilation pipe. The ventilation pipe unit according to any one of claims 1 to 3, wherein the pipe is formed by blow molding. The ventilation pipe unit according to any one of claims 1 to 4, wherein a water receiving groove that flows from the indoor side to the outdoor side is provided on the inner wall of the cylindrical portion from top to bottom. The ventilation pipe unit according to claim 1 or 5, wherein an angle of the water receiving groove is in a range of 5 ° to 20 ° with respect to a surface of the flange portion. The ventilation pipe unit according to claim 1, wherein the width of the water receiving groove is narrower on the upper side of the cylindrical part and wider on the lower side of the cylindrical part. The ventilation pipe unit according to any one of claims 1 to 7, wherein an end portion of the indoor side cylindrical portion of the pipe is closed and an opening is provided on the upper side of the indoor side cylindrical portion. The outer pipe portion of the ventilation pipe has a male thread groove on the outer periphery, a base having an opening hole substantially larger than the outer diameter of the outdoor pipe portion, a hood that covers the base, and the base on the outer wall. In order to be fixed, an outdoor hood composed of a base fixing ring having a female thread groove on the inside can be fixed to the vent pipe so that it can be screwed with the male thread groove of the outdoor side cylinder portion of the vent pipe. The ventilation pipe unit according to any one of claims 1 to 8. A pipe provided with a plurality of grooves inclined at an angle perpendicular to the axial direction of the cylinder part on the outer periphery of the cylinder part, a flange formed with a flexible material and having an inner diameter slightly smaller than the diameter of the groove, and a center And a flange having a stepped portion on the outer periphery of the through hole. The flange is engaged so as to fit into the groove at an arbitrary position of the cylindrical portion, and the flange is connected to the cylindrical portion. The ventilation pipe unit according to any one of claims 1 to 8, wherein the ventilation pipe unit is configured to be in close contact with the step portion and the outer board when attached to the outer board. . The ventilation pipe unit according to any one of claims 1 to 10, wherein a plurality of V-shaped cuts are provided on an outer periphery of the cylindrical portion.

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