JP4382384B2 - Branch pipe joint for intake of drainage and intake device for drainage - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a branch pipe joint for intake of a drainage channel and an intake device of a drainage channel. For example, drainage from a drainage device on a floor of a building is discharged downstairs by a drainage vertical pipe, and the drainage is discharged outside the building. In a drainage channel device that flows into the drainage channel, when negative pressure is generated in the drainage vertical pipe to prevent the trap seal water of the drainage device from being destroyed by the negative pressure generated by sudden drainage in the drainage vertical pipe In this way, air is taken into the drainage vertical pipe.
[0002]
[Prior art]
Conventionally, generally, as shown in FIG. 6, a drainage channel device for draining drainage from the drainage device 2 on the floor of the building 1 to the downstairs with the drainage vertical pipe 3 is provided on the side of the intake pipe joint body 4. A drainage horizontal branch pipe 6 that communicates with the drainage device 2 is connected to the connection port 5 that is open to the drainage pipe 2, and the drainage vertical pipe 3 is connected to a connection port 7 that is open below the intake branch pipe joint body 4. The connection port 8 opened above the intake branch pipe joint body 4 is normally closed, and a structure is adopted in which a vent pipe 10 connected to the intake device 9 opened by the generation of negative pressure in the drainage vertical pipe is connected. .
[0003]
In this conventional drainage intake device, the inner wall surface 11 of the building 1 is bulged indoors to form a pipe space 13 called a pipe space or pipe shaft between the outer wall surface 12 and the inner wall surface 11, In this piping space 13, vertical piping is concentrated. However, as shown in FIG. 6, when the piping space 13 is formed between the outer wall surface 12 and the inner wall surface 11 of the building 1, there is a problem that the wall thickness increases and the room is narrowed.
[0004]
Therefore, as shown in FIG. 7 or FIG. 8, for example, when the building 1 is a two-story building, there is no piping from the upper floor on the second floor. It is not necessary to form the piping space 13, and the equipment wall 14 shown in FIG. 7 or the equipment wall shown in FIG. 8 partially swells indoors in a part necessary for piping of the vent pipe 10 connected to the drainage vertical pipe 3. The structure which provides 15 was taken (for example, refer patent document 1).
[0005]
Further, the intake device 9 has a structure that is disposed on the ceiling of a building or the like (see, for example, Patent Document 1).
[0006]
[Patent Document 1]
JP 2002-309639 A (page 4-page 6, FIG. 1)
[0007]
[Problems to be solved by the invention]
However, in the drainage channel intake apparatus shown in FIG. 6, when the piping space 13 is formed between the outer wall surface 12 and the inner wall surface 11 of the building 1, there is a problem that the wall thickness increases and the room is narrowed.
[0008]
Further, in the drainage channel intake device shown in Patent Document 1 and FIGS. 7 and 8, the upper part of the room is expanded compared to the drainage channel intake device shown in FIG. There was a problem that the typical protruding part was in the way and the aesthetic appearance was impaired.
[0009]
Moreover, if the piping space of the ventilation pipe or the equipment wall is not formed between the outer wall surface and the inner wall surface of the building, the indoor space is expanded and the room can be used effectively. When the space around the beam is narrow and the ventilation pipe is arranged in this space, it is difficult to arrange the ventilation pipe up to the intake device provided on the back of the ceiling, etc. There was a problem that workability was poor when connecting a drainage horizontal branch pipe, a drainage vertical pipe and a vent pipe to a narrow space between them.
[0010]
The present invention has been made in view of the above-mentioned problems, and it is possible to effectively use the room widely without narrowing the indoor space, and it is easy to construct and does not impair the aesthetic appearance. An intake device for a joint and a drainage channel is provided.
[0011]
[Means for Solving the Problems]
A branch pipe joint for intake of a drainage channel according to a first aspect of the present invention has a first connection port connecting a drainage horizontal branch pipe communicated with a single drainage device in a horizontal direction, and a drainage vertical pipe. The second connection port to be connected is opened downward, and the third connection port for connecting the ventilation pipe connected to the intake device that is normally closed and opened by the generation of negative pressure in the drainage vertical pipe is directed upward. An open branch pipe joint body is provided, and the diameter of the third connection port is smaller than the diameters of the first and second connection ports, and the third connection port is eccentric with respect to the second connection port. It opens at a position obliquely upward and is rotatable in the horizontal direction.
[0012]
Then, one end of the drainage horizontal branch pipe is connected to the first connection port of the branch pipe joint body arranged in the pipe routing space between the drainage horizontal branch pipe and the drainage vertical pipe of the building and the drainage vertical pipe is connected to the second connection port. By connecting one end of the pipe and connecting one end of the vent pipe connected to the intake device to the third connection port, the intake device can be connected to the drainage channel, and the abrupt flow that flows through the drainage horizontal branch pipe and the drainage vertical pipe Even if negative pressure is generated in the drainage channel due to drainage, the intake device sucks indoor air, the negative pressure in the drainage channel is eliminated, and the trap seal water of the drainage device is not destroyed.
[0013]
Further, the third connection port has a small diameter, and a small-diameter ventilation pipe can be easily piped even in a space narrowed by a beam between the outer wall surface and the inner wall surface of the building. Can be connected in the direction in which the vent pipe can be easily connected, and the third connection port is opened obliquely upward with respect to the second connection port. The degree of freedom increases and construction can be performed efficiently.
[0014]
According to a second aspect of the present invention, there is provided an intake branch pipe joint for a drainage channel according to the first aspect of the present invention. The connection port formed in the first connection port and the connection port formed on the lower surface as the second connection port, and the connection port formed on the upper surface of the branch connection body is connected to the second connection port. And a vent pipe connection port forming body in which three connection ports are formed.
[0015]
Then, by combining the branch pipe joint main body in which the first connection port and the second connection port are formed with the vent pipe connection port forming body in which the third connection port is formed, the drainage horizontal branch pipe, the drainage vertical pipe, A branch pipe joint for connecting the vent pipe can be constructed, and a general existing branch pipe joint can be used for the branch pipe joint body, thereby reducing the manufacturing cost.
[0016]
According to a third aspect of the present invention, there is provided an intake branch pipe joint for a drainage channel according to the first or second aspect of the present invention , wherein the third connection port has a bellows pipe connected to the suction device. The vent pipe formed in (1) can be connected in an airtight manner.
[0017]
And since the vent pipe is a bellows pipe, the diameter of the third connection port is small and the beam between the outer wall surface and the inner wall surface of the building without using a plurality of pipe materials such as a bent pipe and a straight pipe. The degree of freedom in the piping direction can be increased in a space that is narrowed by, for example, the ventilating tube of the bellows tube can be adjusted to bend gently, and piping can be easily performed according to the position of the beam, the wall surface, and the position of the intake device.
[0018]
An intake branch pipe joint for a drainage channel according to a fourth aspect of the present invention is the intake branch pipe joint for a drainage channel according to any one of claims 1 to 3, wherein The nominal diameter of the connection port is 75 mm, and the nominal diameter of the third connection port is 40 mm to 20 mm.
[0019]
And the pipe diameter of the bellows vent pipe is small, and it is easily piped in the space narrowed by the beam between the outer wall surface and the inner wall surface of the building according to the position of the beam, wall surface, intake device etc. it can.
[0020]
According to a fifth aspect of the present invention, there is provided an intake device for a drainage channel, wherein the first connection port is opened in the horizontal direction, the second connection port is opened downward, and the third connection port is opened upward. The diameter of the third connection port is smaller than the diameters of the first and second connection ports, and the third connection port is eccentric with respect to the second connection port. and rotatable in the horizontal direction as well as open toward the obliquely upward, the the first connection port connected to the drainage lateral branch pipe communicates with the single drainage device, and waste water vertically to the second connection port And connecting the pipe to the third connection port, which is normally closed and opened by the generation of negative pressure in the drainage vertical pipe, and is connected airtightly by a vent pipe formed of a bellows pipe, and the third connection A bellows tube that hermetically connects the mouth and the intake device is disposed in the wall of the building.
[0021]
Then, one end of the drainage horizontal branch pipe is connected to the first connection port of the branch pipe joint body arranged in the pipe routing space between the drainage horizontal branch pipe and the drainage vertical pipe of the building and the drainage vertical pipe is connected to the second connection port. By connecting one end of the pipe and connecting one end of the vent pipe of the bellows pipe connected to the air intake device to the third connection port, the air intake device can be connected to the drainage channel. Even if a negative pressure is generated in the drainage channel due to the rapid drainage flowing, the intake device sucks indoor air, the negative pressure in the drainage channel is eliminated, and the trap seal of the drainage device is not destroyed.
[0022]
In addition, the diameter of the third connection port is small, and a small-diameter ventilation pipe can be piped in a space narrowed by a beam between the outer wall surface and the inner wall surface of the building. The vent pipe can be connected in a direction in which the vent pipe can be easily moved, and the third connection port is opened obliquely upward with respect to the second connection port. The degree increases and construction can be performed efficiently.
[0023]
Furthermore, it is not necessary to form a piping space or a facility wall called pipe space or pipe shaft between the outer wall surface and the inner wall surface by bulging the inner wall surface of the building to the indoor side. Can be used effectively without damaging the aesthetics.
[0024]
A drainage channel intake device according to a sixth aspect of the present invention is the drainage channel suction device according to the fifth aspect, wherein a casing is provided in the wall of the building, and the casing is arranged inside the wall. The side wall is formed with a vent for sucking air from an air intake opening formed on the inner wall surface of the wall, and the lower portion is formed with a vent hole for connecting a bellows pipe of the vent pipe. Is provided with an intake valve body that is opened to prevent communication between the vent and the vent hole connecting the vent pipe.
[0025]
And without installing the air intake device on the ceiling of the building, etc., it can be provided in the housing inside the wall, and when intake air of the air intake device, indoor air can be sucked from the vent formed on the inner wall, The negative pressure in the drainage can be reliably eliminated by reducing the number of vent pipes.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of a drainage pipe joint for drainage and an intake device pipe for drainage according to the present invention will be described with reference to FIGS. 1 and 2.
[0027]
In FIG. 1, a drainage port 23 of a single drainage device 22 such as a wash basin, a bathroom, a toilet, etc. of a building 20, for example, an upper floor 21 in a house, and the building 20 are not shown in the drawing. A drainage channel connected to a sewage tank or the like is constituted by a drainage horizontal branch pipe 25 piped to the lower floor 24 on the floor and a drainage vertical pipe 26 connected to the drainage horizontal branch pipe 25.
[0028]
A piping space 30 such as a pipe space is formed between the outer wall surface 28 and the inner wall surface 29 of the lower floor 27 of the building 20. In addition, there is no pipe space between the outer wall surface 28 and the inner wall surface 31 of the upper floor 21 due to the pipe space or the equipment wall bulging into the room, and a narrow inter-wall space 32 having a normal wall structure is formed. . The pipe space 30 and the inter-wall space 32 are provided with beams 33 and the like.
[0029]
In addition, a branch pipe joint body 34 is provided at the connection position of the drainage vertical pipe 26 and the drainage horizontal branch pipe 25 that are piped in the pipe space 30 at the upper part of the pipe space 30 of the building 20. This branch pipe joint body 34 includes a branch pipe joint main body 35 and a vent pipe connection port forming body 36 which are formed by a T-shaped pipe joint having a receiving port on the upper and lower surfaces and a receiving port on the side surface. It is formed.
[0030]
The connection port opened in the horizontal direction on the side surface of the branch pipe fitting body 35 is a first connection port 37 for connecting the drainage horizontal branch pipe 25 communicated with the drainage device 22, and the connection port formed on the lower surface is a vertical drainage port. A second connection port 38 for connecting the pipe 26 is used.
[0031]
In addition, as shown in FIG. 2, the vent pipe connection port forming body 36 fitted and connected to the connection port 40 formed on the upper surface of the branch pipe joint body 35 is formed with a fitting connection port 39 opened on the lower surface. The fitting connection port 39 is fitted and fixed to the connection port 40 of the receiving port of the branch pipe fitting main body 35. A connection port 41 is opened on the upper surface of the vent tube connection port forming body 36 at a position eccentric to the second connection port 38, and a third connection port 42 is formed in the connection port 41. The connecting port body 43 to be rotated is attached to be rotatable. The connection port body 43 that forms the third connection port 42 is curved and opened obliquely upward. Further, the connection port body 43 is formed with a retaining claw portion 43a that is inserted into the connection port portion 41 of the vent pipe connection port forming body 36 by elastic deformation.
[0032]
The connection port portion 41 of the vent tube connection port forming body 36 has a cylindrical receiving portion 44 protruding in a cylindrical shape on the inside, and an annular protruding edge 45 is formed at the inner end portion of the cylindrical receiving portion 44. Then, the engaging protrusion 46 formed on the outer peripheral surface of the connection port body 43 inserted and inserted into the cylindrical receiving portion 44 is engaged with the connection port portion 41 so as to be rotatable. In addition, an O-ring 48 fitted in an annular groove 47 formed on the outer periphery of the connection port body 43 is in airtight contact with the inner peripheral surface of the cylindrical receiving portion 44.
[0033]
The distal end portion of the connection port body 43 is formed with an enlarged diameter of a third connection port 42 that can connect a vent tube 49 formed of a bellows tube.
[0034]
Thus, the diameter of the third connection port 42 is smaller than the diameters of the first and second connection ports 37 and 38, and the nominal diameter of the second connection port 38 connecting the drainage vertical pipe 26 is 75 mm. The nominal diameter of the third connection port 42 is 40 mm to 20 mm.
[0035]
Next, an air intake device 51 for connecting a bellows vent pipe 49 connected to the third connection port 42 is provided in the space 32 between the walls of the upper floor 21 of the building 20, as shown in FIGS. It is arranged.
[0036]
The intake device 51 is housed in a housing 52 that is disposed and fixed in a space 32 between the outer wall surface 28 and the inner wall surface 31 of the upper floor 21. On one side surface of the casing 52, a ventilation portion 54 for sucking indoor air from an intake opening 53 formed in the inner wall surface 31 is opened. In addition, a vent 55 is formed in the lower part of the casing 52 to connect the vent pipe 49 in an airtight manner. The vent pipe 49 inserted through the vent 55 is formed on the outer periphery of the bellows pipe forming the vent pipe 49. The attached О ring 56 is connected to the vent 55 in an airtight manner.
[0037]
The intake device 51 is composed of an intake valve, and the intake device 51 is formed with a ventilation opening 58 on the lower surface of the intake valve main body 57, and the intake valve main body 57 has an annular air passage 59 communicating with the ventilation opening 58. An intake chamber 61 is formed by a cylindrical wall portion 60 opened on the upper surface inside the air passage 59, and a valve seat edge is formed on the upper surface opening edge of the wall portion 60 forming the intake chamber 61. 62, and further, the intake chamber 61 is formed with an intake passage 63 communicating with the ventilation portion 54 of the casing 52, as shown in FIG. A bearing hole 65 for supporting the valve shaft 64 so as to be vertically movable is formed in the central portion of the intake chamber 61.
[0038]
The valve shaft 64 supported so as to be vertically movable in the bearing hole 65 is provided with an intake valve body 66 that contacts and separates from the valve seat edge 62, and the intake valve body 66 has a negative pressure on the air passage 59 side. Then, the air passage 59 and the intake chamber 61 communicate with each other away from the valve seat edge 62.
[0039]
Further, a cover 68 is provided which is located in the intake opening 53 of the inner wall surface 31 and has a ventilation slit 67 formed in the inner wall surface 31.
[0040]
Next, the operation of the intake device for the drainage using the intake branch pipe joint of this embodiment will be described.
[0041]
A drainage horizontal branch pipe 25 piped to a lower floor 24 of the upper floor 21 is connected to a drain outlet 23 of a drainage device 22 installed in the upper floor 21 of the building 20 through a straight pipe 71 and a bent pipe joint 72. . Further, a drainage vertical pipe 26 communicating with the sewer pipe is piped into a pipe space 30 formed between the outer wall surface 28 and the inner wall surface 29 of the lower floor 27 of the building 20.
[0042]
Then, a branch pipe joint body 34 is disposed at a position where the drainage horizontal branch pipe 25 and the drainage vertical pipe 26 intersect in the upper part of the pipe space 30, and the drainage horizontal pipe is connected to the first connection port 37 of the branch pipe joint body 34. The downstream end of the branch pipe 25 is connected and the upstream end of the drainage vertical pipe 26 is connected to the second connection port 38. Further, one end of the vent pipe 49 is connected to the third connection port 42 of the branch pipe joint body 34, and the other end of the vent pipe 49 is connected to the intake device 51.
[0043]
In addition, a housing 52 that houses an air intake device 51 is disposed in the inter-wall space 32 between the outer wall surface 28 and the inner wall surface 31 of the upper floor 21 of the building 20, and a ventilation portion of the housing 52 is provided. 54 is opposed to an intake opening 53 formed in the inner wall surface 31. The other end of the bellows tube 49 is connected to the vent 55 of the housing 52.
[0044]
In this state, the vent pipe 49 connected to the vent hole 55 of the casing 52 communicates with the vent path 59 from the vent opening 58 of the intake valve main body 57, and the vent valve 54 of the casing 52 is connected to the vent portion 54 of the casing 52. An intake chamber 61 communicates with the intake passage 63, and the air passage 59 and the intake chamber 61 are blocked by the intake valve body 66.
[0045]
When connecting the bellows tube vent pipe 49 to the third connection port 42 of the branch pipe joint body 34, the connection port body 43 provided rotatably in the vent pipe connection port forming body 36 of the branch pipe joint body 35. And the third connection port 42 of the connection port body 43 is directed in the direction in which the vent tube 49 can be easily connected, so that the vent tube 49 can be easily connected. Since the opening is made obliquely upward with respect to the second connection port 38, the degree of freedom in the piping direction is increased and construction can be performed efficiently.
[0046]
Further, since the vent pipe 49 is a bellows pipe, the vent pipe 49 does not use a plurality of pipe materials such as a bent pipe and a straight pipe, and the diameter of the third connection port 42 is small and the outer wall surface 28 and the inner wall surface 31 of the building are small. The degree of freedom in the piping direction can be increased in the space narrowed by the beam 33 between and the bellows, and the adjustment pipe can be adjusted to gently bend the vent pipe 49 of the bellows pipe, so that the position of the beam, wall surface, and intake device It can be easily piped accordingly.
[0047]
And the fitting connection port of the vent pipe connection port forming body 36 in which the third connection port 42 is formed in the connection port 40 of the branch pipe joint body 35 in which the first connection port 37 and the second connection port 38 are formed. 39 is fitted and combined to form a branch pipe joint body 34 connecting the drainage horizontal branch pipe 25, the drainage vertical pipe 26 and the ventilation pipe 49, and the branch pipe joint body 35 includes a general existing branch pipe. Joints can be used and manufacturing costs can be reduced.
[0048]
The diameter of the third connection port 42 is smaller than that of the first and second connection ports 37 and 38 and is narrowed by a beam 33 between the outer wall surface 28 and the inner wall surface 31 of the building 20. The small diameter vent pipe 49 can be easily piped in the open space. Especially, the nominal diameter of the second connection port 38 for connecting the drainage vertical pipe 26 is 75 mm, and the nominal diameter of the third connection port is 40 mm to 20 mm. Therefore, the diameter of the bellows vent pipe 49 is small and the space between the walls 32 narrowed by the beam 33 between the outer wall surface 28 and the inner wall surface 31 of the building 20, etc. Easy piping according to the position of the
[0049]
Furthermore, it is not necessary to bulge the inner wall surface 31 of the building 20 indoors to form a piping space or equipment wall called pipe space or pipe shaft between the outer wall surface 28 and the inner wall surface 31, and narrow the room. The room can be used effectively without damaging the aesthetics.
[0050]
The drainage from the drainage device 22 of the upper floor 21 flows from the drainage port 23 through the drainage horizontal branch pipe 25 through the straight pipe 71 and the bent pipe joint 72, and the first connection port 37 of the branch pipe joint body 34. From the drainage vertical pipe 26 connected to the second connection port 38 to the sewer pipe.
[0051]
In addition, if a negative pressure is generated in the drainage channel from the drainage horizontal branch pipe 25 to the drainage vertical pipe 26 due to the sudden drainage from the drainage device 22 due to the drainage flowing from the drainage horizontal branch pipe 25 to the drainage vertical pipe 26, the inside of the vent pipe 49 Negative pressure is also generated, the air passage 59 of the intake valve body 57 of the intake device 51 is also in a negative pressure state, the intake valve body 66 is sucked by this negative pressure, the intake valve body 66 is separated from the valve seat edge 62, The air passage 59 and the intake chamber 61 are communicated with each other.
[0052]
When the ventilation path 59 of the intake valve body 57 and the intake chamber 61 communicate with each other, the intake chamber 61 communicates from the intake path 63 of the intake valve body 57 to the ventilation portion 54 of the housing 52, the intake opening 53 of the inner wall surface 31, and the cover 68. The air vent slit 67 communicates with the atmosphere, the indoor air is sucked into the drainage passages of the ventilation pipe 49, the drainage vertical pipe 26 and the drainage horizontal branch pipe 25, the negative pressure in the drainage path is eliminated, and the trap of the drainage device 22 is trapped. Prevent water seal destruction.
[0053]
In addition, the air intake device 51 can be provided in the housing 52 in the inter-wall space 32 without being installed on the ceiling of the building 20, etc. The intake air can be sucked in, and the negative pressure of the drainage can be surely eliminated by reducing the number of pipes of the vent pipe 49, and maintenance of the intake device 51 can be facilitated.
[0054]
In the embodiment, the housing 52 of the intake device 51 is provided in the inter-wall space 32 between the outer wall surface 28 and the inner wall surface 31, but the housing 52 of the intake device 51 is provided in the partition wall. You can also.
[0055]
【The invention's effect】
According to the first aspect of the present invention, the vent pipe connected to the intake device can be easily connected to the drainage channel by the branch pipe joint body connecting the drainage horizontal branch pipe and the drainage vertical pipe of the building. Even if a negative pressure is generated in the drainage channel, the intake device sucks indoor air and the negative pressure in the drainage channel is eliminated, and the sealing failure of the trap of the drainage device can be prevented. Further, the diameter of the third connection port for connecting the vent pipe of the branch pipe joint body is small, and the small diameter vent pipe can be piped in a space narrowed by a beam between the outer wall surface and the inner wall surface of the building, Further, the third connecting port can be rotated to connect the vent pipe in a direction in which the vent pipe can be easily connected, and the third connecting port is connected to the second connecting port connecting the drainage vertical pipe. Since it is opened obliquely upward, the degree of freedom in the piping direction is increased and construction can be performed efficiently.
[0056]
According to the second aspect of the present invention, by combining the branch pipe joint body in which the first connection port and the second connection port are formed with the vent pipe connection port forming body in which the third connection port is formed, A branch pipe joint that connects the horizontal branch pipe, the drainage vertical pipe, the water vertical pipe, and the ventilation pipe can be configured, and a general existing branch pipe joint can be used for the branch pipe joint body, thereby reducing the manufacturing cost.
[0057]
According to the third aspect of the present invention, since the vent pipe is a bellows pipe, the third connecting port has a small diameter and the outer wall surface of the building without using a plurality of pipe materials such as a bent pipe and a straight pipe. The degree of freedom in the piping direction can be increased in a space narrowed by a beam between the inner wall and the inner wall surface, and the adjustment pipe can be adjusted so that the ventilating pipe of the bellows pipe is gently bent. It can be easily piped according to.
[0058]
According to the fourth aspect of the present invention, the diameter of the bellows vent pipe is small, and the space between the outer wall surface and the inner wall surface of the building is narrowed by the beam, the position of the wall surface, Easy piping according to the position.
[0059]
According to the fifth aspect of the present invention, the intake device can be easily connected to the drainage channel connecting the drainage horizontal branch pipe and the drainage vertical pipe by the branch pipe joint body, and the drainage channel is formed by the rapid drainage flowing through the drainage channel. Even if a negative pressure occurs, the intake device sucks indoor air, the negative pressure of the drainage channel is eliminated, and the trap seal water of the drainage device is not destroyed. In addition, since the diameter of the third connection port for connecting the vent pipe of the branch pipe joint body is small, a small-diameter vent pipe is installed in a space narrowed by a beam between the outer wall surface and the inner wall surface of the building. In addition, the third connection port can be rotated to connect the vent pipe in a direction in which the vent pipe can be easily connected, and the third connection port is obliquely above the second connection port. Since it is opened toward the top, the degree of freedom in the piping direction is increased and construction can be performed efficiently.
[0060]
Furthermore, it is not necessary to form a piping space or a facility wall called pipe space or pipe shaft between the outer wall surface and the inner wall surface by bulging the inner wall surface of the building to the indoor side. Can be used effectively without damaging the aesthetics.
[0061]
According to the sixth aspect of the present invention, the air intake device can be provided in the housing inside the wall without being installed on the ceiling of the building or the like. Intake can be performed, and the negative pressure of the drainage can be surely eliminated by reducing the piping of the vent pipe.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view of an intake device for a drainage channel showing an embodiment of the present invention.
FIG. 2 is a longitudinal front view of the vent pipe connection port forming body of the intake branch pipe joint.
FIG. 3 is a longitudinal side view of the intake device.
FIG. 4 is a front view of the intake device.
FIG. 5 is a cross-sectional plan view of the intake valve main body of the intake device.
FIG. 6 is a longitudinal front view of a conventional drainage intake device.
FIG. 7 is a longitudinal front view of another conventional intake device for a drainage channel.
FIG. 8 is a longitudinal front view of still another conventional intake device for a drainage channel.
[Explanation of symbols]
20 Building
22 Drainage equipment
25 Drainage horizontal branch pipe
26 Drainage pipe
28 Exterior wall
31 Inner wall
34 Branch fitting body
35 Branch fitting body
36 Vent pipe connection body
37 First connection port
38 Second connection
42 3rd connection port
49 Vent pipe
51 Intake device
52 Enclosure
53 Air intake opening
54 Vent
55 Vent
58 Ventilation opening
66 Intake valve body

Claims (6)

A first connection port for connecting a drainage horizontal branch pipe communicated with a single drainage device is opened in a horizontal direction, and a second connection port for connecting a drainage vertical pipe is opened in a downward direction. A branch pipe joint that opens and opens a third connection port that connects a vent pipe that is closed and connected to an intake device that is opened by generation of negative pressure in the drainage vertical pipe;
The diameter of the third connection port is smaller than the diameters of the first and second connection ports,
This third connection port opens at an eccentric position obliquely upward with respect to the second connection port and is rotatable in the horizontal direction. The branch pipe joint body has a connection port formed on the side surface and the upper and lower surfaces, the connection port formed on the side surface as the first connection port, and the connection port formed on the lower surface as the second connection port. And a vent pipe connection port forming body that is connected to a connection port formed on the upper surface of the branch pipe joint main body to form a third connection port. Branch pipe fittings. The branch pipe joint for intake of a drainage channel according to claim 1 or 2, wherein a vent pipe formed of a bellows pipe connected to an intake device can be connected to the third connection port in an airtight manner. 4. The nominal diameter of the second connection port for connecting the drainage vertical pipe is 75 mm, and the nominal diameter of the third connection port is 40 mm to 20 mm. Branch pipe fitting for intake of drainage. A branch pipe joint body having a first connection port opened in a horizontal direction and a second connection port opened in a downward direction and a third connection port opened in an upward direction;
The diameter of the third connection port is smaller than the diameters of the first and second connection ports,
The third connection port opens obliquely upward at an eccentric position with respect to the second connection port and is rotatable in the horizontal direction.
A drainage horizontal branch pipe connected to a single drainage device is connected to the first connection port, and a drainage vertical pipe is connected to the second connection port, and the third connection port is normally closed and drained. The air intake device that opens due to the generation of negative pressure in the vertical pipe is connected in an airtight manner with a vent pipe formed of a bellows pipe,
An air intake apparatus for a drainage channel, wherein a vent pipe formed of a bellows pipe for airtightly connecting the third connection port and the air intake apparatus is disposed in a wall of a building. Provide a housing to arrange the intake device inside the building wall,
On one side of the housing is formed a vent that sucks air from an intake opening formed on the inner wall surface of the wall, and a vent that connects the bellows tube of the vent pipe is formed at the bottom.
6. The drainage channel according to claim 5, wherein the intake device is provided with an intake valve body that is opened by a negative pressure in the drainage vertical pipe to cut off communication between the vent and the vent hole connecting the vent pipe. Intake device.

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