JPH05132983A - Drainage equipment - Google Patents

Abstract

PURPOSE:To prevent a bent pipe interior from being blocked by forming both the end jointing sections of the bent pipe formed between the horizontal pipe and vertical pipe of circular cross-sectional areas, respectively in the same circular shapes as the shapes of the horizontal pipe and the vertical pipe, and by forming a central section in the axial direction, to be tapered. CONSTITUTION:A drainage equipment 1 is composed of the horizontal pipe 2 of a circular cross-sectional area set in the horizontal direction over the respective floors of a building, the vertical pipe 3 of a circular cross-sectional area set in the plumb direction in the building, and a bent pipe 4 to be set between the horizontal pipe 2 and the vertical pipe 3. After that, the bent pipe 4 is formed to be curved so that the outflow direction over the upper end section of the vertical pipe 3 formed from the end section of the horizontal pipe 2 may be converted at right angle continuously in the vertical direction from the horizontal direction, and is formed with a central section 41 in the axial direction formed to have egg shaped cross-sectional, a cylindrical jointing section 42 to be set continuously to an end section to be jointed with the horizontal pipe 2, and a cylindrical jointing section 43 to be set continuously to an end section to be jointed with the vertical pipe 3. Then, drain in a turbulent state reaching the bent pipe 4 from the horizontal pipe 2 comes into collision on a tapered inner diameter side internal-surface in the bent pipe 4, and is prevented from ascending to the upper section space.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage device, and more particularly to a drainage device provided in a high-rise building.

[0002]

2. Description of the Related Art Generally, it is ideal that a drainage device provided in a high-rise building is composed of a single vertical pipe vertically arranged from the top floor to the bottom floor. Due to the difference in the room layout, it is very difficult to pipe straight, and in that case, the vertical pipe will be offset. Therefore, a drainage device in a middle-high-rise building is provided with vertical pipes that are arranged offset in the vertical direction, horizontal pipes that are arranged horizontally between these vertical pipes, and horizontal pipes and vertical pipes. It is composed of a bent pipe that connects with. Then, the sewage and drainage discharged from each floor is designed to flow to a sewer pipe, a sewage pipe, etc. through a vertical pipe, a curved pipe, and a horizontal pipe.

[0003]

By the way, when a large amount of drainage flows inside the vertical pipe at a time, when the direction is changed by the curved pipe, it collides with the curved pipe and jumps up to close the inside thereof. Before and after this block, the air layer in the drainage device does not communicate with each other, and the inside of the pipe becomes positive pressure or negative pressure.As a result, the traps of various sanitary kitchen devices connected to the drainage device are broken, and the odor inside the pipe becomes bad. There was a problem that such things flow back into each room.

When the turbulent drainage flows into the horizontal pipe by colliding with the curved pipe and jumping up, the flow velocity becomes lower than that in the vertical pipe and reaches the curved pipe in the turbulent flow to reach the vertical direction. When the flow is converted, it collides with the inner surface of the bent tube and occludes the inside thereof. When the drainage device is blocked by the drainage in this way, the trap is broken, and as described above, the malodor in the pipe flows back into the room.

The present invention has been made in view of the above problems, and when drainage or the like is discharged from a horizontal pipe to a vertical pipe through a curved pipe, the drainage is rectified to prevent clogging. It provides a drainage device.

[0006]

DISCLOSURE OF THE INVENTION The present invention is a drainage device including a horizontal pipe having a circular cross section, a vertical pipe having a circular cross section, and a bent pipe disposed between the horizontal pipe and the vertical pipe. And, the both-end connection portion of the bent pipe is formed in the same circular shape as the horizontal pipe and the vertical pipe, respectively, and the axial center portion is formed to be tapered from both side portions to the inner diameter portion. The inner surface on the inner diameter side is gradually tapered from the both end connecting portion to the central portion in the axial direction.

[0007]

[Operation] The turbulent drainage from the horizontal pipe to the curved pipe is
The curved pipes are prevented from colliding with each other on the inner surface of the tapered inner diameter side and rising to the upper space thereof, and the flow velocity is increased to flow down. In this way, the turbulent flow of drainage in the horizontal pipe can be rectified, and at the same time, the flow in the horizontal pipe, which is relatively slow compared to the vertical pipe, can be changed to an early flow and smoothly guided to the vertical pipe.

As a result, the turbulent flow in the horizontal pipe can be guided to the vertical pipe as it is, and can be drained without adverse effects such as blockage.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the drainage device 1
Is a horizontal pipe 2 having a circular cross section arranged horizontally in each floor of the building, a vertical pipe 3 having a circular cross section vertically arranged in the building, and these horizontal pipes 2 and 3 And a bent pipe 4 disposed between

The curved pipe 4 is formed so as to be curved so as to continuously convert the outflow direction from the horizontal direction to the vertical direction by 90 degrees from the end of the horizontal pipe 2 to the upper end of the vertical pipe 3, and has a cross section of a substantially egg. Shaped central portion 41 in the axial direction, a cylindrical connecting portion 42 connected to the end portion on the side of connection with the horizontal tube 2, and a cylindrical shape connected to the end portion on the side of connection to the vertical tube 3. And a connecting portion 43 of Then, one connecting portion 42 is provided with a flange 42A connectable to the flange 2A provided at the end portion of the horizontal tube 2 formed in a cylindrical shape, and the other connecting portion 43.
Is provided with a flange 43A connectable to the flange 3A provided at the upper end of the vertical pipe 3 formed in a cylindrical shape.

By the way, the bent tube 4 has an inner diameter portion 4a continuous with the bottom portion of the horizontal tube 2, an outer diameter portion 4b continuous with the top portion of the horizontal tube 2, and these inner diameter portion 4a and outer diameter portion 4b. It has side parts 4c and 4c which connect between. The radius of curvature of the inner diameter side inner surface 41a in the axial center portion 41 is formed to be smaller than the radius of curvature of the outer diameter side inner surface 41b, and the inner diameter side inner surface 41a and the outer diameter side inner surface 41b are bent and tapered. The side inner surfaces 41c, 41c are connected to each other and are formed in an oval cross section (see FIG. 3A).
Further, from the both-end connecting portions 42, 43 to the axial center portion 41, the both-end connecting portions 42, 4 having a circular cross section shown in FIG.
3 is an axially central portion 41 having a substantially oval cross section shown in FIG.
The inner diameter 4
It is formed so that the distance between a and the inner surface of the outer diameter portion 4b gradually increases, and the distance between the inner surfaces of both side portions 4c, 4c gradually decreases.

That is, the bent pipe 4 has the two end connecting portions 4
The radius of curvature of the inner diameter side inner surface 41a is smaller than the radius of curvature of the outer diameter side inner surface 41b in an arbitrary cross section of the axial center portion 41 sandwiched between 2, 43. The radius side inner surface 41b is formed so that the radius of curvature thereof is gradually smaller than the circular radius of curvature of the both end connecting portions 42, 43.
3 to the axially central portion 41, each of which is formed with a continuous curved surface so as to approach a substantially oval shape having the same cross-sectional area from a circular shape that matches the horizontal tube 2 and the vertical tube 3, respectively.

The curved pipe 4 is arranged between a horizontal pipe 2 which is horizontally arranged in each floor of a building and a vertical pipe 3 which is vertically arranged in each floor. The flange 42A of the one connecting portion 42 of
While connecting to A, the other connecting portion 43 of the bent pipe 4
The drainage device 1 is constructed by connecting the flange 43A of the vertical pipe 3 to the flange 3A of the vertical pipe 3.

Next, the operation of the drainage device 1 configured as described above will be described. The drainage that has flowed down into the lateral pipe 2 and is in a turbulent state is the inner diameter side of the axially central portion 41 of the curved pipe 4. The inner surface 41a is rectified by colliding with each other, and is guided to the vertical pipe 3 while increasing its flow velocity, so that it does not rise to the upper part of the outer diameter side inner surface 41b.

Therefore, the drainage flows down the inside of the bent pipe 4 and is sent to the vertical pipe 3 in a state where an air layer is always present on the upper part of the bent pipe 4, so that negative pressure or positive pressure fluctuations occur in the pipe. Can be prevented.

In this embodiment, the axial center portion 41 has a substantially oval cross section, but the inner diameter side inner surface 41a may be tapered, as shown in FIG. It is also possible to employ a bent tube 4 having an axially central portion with a different cross-sectional shape.

Further, it may be a bent pipe that guides drainage from the horizontal pipe 2 to the vertical pipe 3, and can be applied to a TY joint as shown in FIG. 5, or both TY joints, in addition to the elbow. Such a TY joint easily secures an air layer at the upper side, and is preferable as a bent pipe that connects the horizontal pipe 2 and the vertical pipe 3.

Further, the diameters of the connecting portions at both ends of the bent pipe may not be the same. However, making the diameter on the outflow side smaller than the diameter on the inflow side adversely affects the flow, and is not normally performed.

[0020]

As described above, according to the present invention, the bent pipe is formed by connecting both end portions formed in a circular shape corresponding to the circular cross-sections of the horizontal pipe and the vertical pipe, and tapering from both side portions to the inner diameter portion. It is composed of a central part in the axial direction, and the inner surface on the inner diameter side is gradually tapered from the connection part at both ends to the central part in the axial direction. It can be rectified and guided to the vertical pipe while increasing the flow velocity, and can prevent the bent pipe from being blocked by drainage. As a result, the air layer is always in communication with the inside of the bent pipe, pressure fluctuation does not occur in the drainage device, and the trap breakage in the drainage device can be reliably prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of a drainage device of the present invention.

FIG. 2 is a front view showing a part of FIG. 1 broken away.

FIG. 3 is a cross-sectional view of an axial center portion and both-end connection portions of a bent pipe.

FIG. 4 is a cross-sectional view illustrating another cross-sectional shape of the central portion in the axial direction of the bent pipe.

5A and 5B are a front view and a cross-sectional view showing a partially broken TY joint as an example of a bent pipe.

[Explanation of symbols]

 1 Drainage device 2 Horizontal pipe 3 Vertical pipe 4 Bent pipe 41 Central part in the axial direction 42, 43 Connection part 4a Inner diameter part 4b Outer diameter part 4c Side part

Claims (1)

[Claims] 1. A horizontal pipe having a circular cross section and a vertical pipe having a circular cross section,
A drainage device comprising a bent pipe arranged between these horizontal pipes and vertical pipes, wherein both ends of the bent pipe are formed in the same circular shape as the horizontal pipe and the vertical pipe, respectively, and ,
The axial center portion is tapered from both side portions to the inner diameter portion, and further, the inner diameter side inner surface is gradually tapered from the both end connection portions to the axial center portion. Drainage device.