JP2020020201A - Siphon drainage system - Google Patents

Abstract

To provide a siphon drainage system capable of suppressing residence of drainage at an upstream side of a horizontal pipe by reducing a time lag from a start of the drainage from a kitchen sink to generation of siphon power.SOLUTION: A siphon drainage system 10 comprises: a kitchen sink 16; a first drainage pipe 31 that is connected to the kitchen sink 16; a drainage trap 18 that is connected to a downstream side of the first drainage pipe 31; a second drainage pipe 32 that is connected to a downstream side of the drainage trap 18; a horizontal pipe 21 of a siphon drainage pipe 23 that is connected to a downstream side of the second drainage pipe 32; a vertical pipe 22 of the siphon drainage pipe 23 that is connected to a downstream side of the horizontal pipe 21 and allows the drainage to flow downward from the horizontal pipe 21; and a water supply part 40 that is connected to a boundary between the horizontal pipe 21 and the vertical pipe 22 or is connected to the vertical pipe 22 and can supply priming water to the vertical pipe 22.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a siphon drainage system.

  A siphon drainage system is disclosed in which a temporary storage tank for drainage is connected between a water supply device and a siphon drainage pipe. This temporary storage tank is arranged in the underfloor space between the slab and the floor surface.

JP 2007-315036 A

  The siphon drainage pipe has a horizontal drawing pipe (horizontal pipe) and a vertical pipe through which drainage from the horizontal drawing pipe flows downward. When the drainage moves in the horizontal draw pipe and enters the vertical pipe, and when the vertical pipe becomes full, siphon force is generated by the potential energy of the drainage falling in the vertical pipe, and the subsequent drainage is drawn into the vertical pipe and drained. Is done.

  At this time, if the horizontal drawing pipe is long, the drainage moving inside the horizontal drawing pipe reaches the vertical pipe, and it takes more time until the siphon force is generated. Also, if the amount of drainage from the plumbing fixture is large, the drainage may stay on the upstream side of the horizontal drawing pipe. The temporary storage tank described in the above-described conventional example is used to suppress this stagnation.

  However, the temporary storage tank requires a certain height, and it is necessary to secure a space under the floor according to this height. In order to further reduce the floor, it is desired to eliminate the need for a temporary storage tank or to reduce the size of the temporary storage tank.

  An object of the present invention is to reduce the time lag from the start of drainage from a water circulating device to the generation of siphon force, and to suppress stagnation of drainage upstream of a horizontal drawing pipe.

  The siphon drainage system according to the first aspect is connected to a first drainage pipe connected to a plumbing fixture, a drainage trap connected downstream of the first drainage pipe, and connected downstream of the drainage trap. A second drain pipe, a horizontal drawing pipe of a siphon drain pipe connected to a downstream side of the second drain pipe, and a drain pipe connected to a downstream side of the horizontal drawing pipe to drain water from the horizontal drawing pipe downward. It has a vertical pipe of a siphon drainage pipe, and a water supply unit connected to the vertical pipe and a boundary between the horizontal drawing pipe and the vertical pipe or capable of supplying priming water to the vertical pipe.

  In this siphon drainage system, the water supply section can supply priming water to the vertical pipe of the siphon drainage pipe. Even when the drainage from the plumbing equipment moves inside the horizontal drawing pipe of the siphon drainage pipe, even when it does not reach the vertical pipe, the vertical pipe becomes full by supplying priming water to the vertical pipe, generating siphon power. I do. Once the siphon force is generated, a negative pressure is generated in the horizontal drawing pipe, and the air located between the drainage in the horizontal drawing pipe and the priming water is drawn into the vertical pipe, and the drainage in the horizontal drawing pipe is also drawn into the vertical pipe. Therefore, as compared with the case where the priming water is not supplied to the vertical pipe, the time from the start of drainage from the plumbing device to the generation of the siphon force is shortened. For this reason, even if the horizontal drawing pipe is long or the amount of drainage from the water circulating device is large, the drainage does not stay on the upstream side of the horizontal drawing pipe.

  A second aspect is the siphon drainage system according to the first aspect, wherein the second drainage pipe is provided with a first sensor for detecting passage of drainage in the second drainage pipe, and A control unit that controls the operation of the water supply unit based on the signal of, when the first sensor detects the passage of drainage in the second drain pipe, the control unit operates the water supply unit, Priming water is supplied to the vertical pipe.

  In this siphon drainage system, a first sensor for detecting passage of drainage in the second drainage pipe is provided in a second drainage pipe connected between the drainage trap and the horizontal draw pipe. When the passage of the drainage in the second drainage pipe is detected by the first sensor, the control unit operates the water supply unit to supply priming water to the vertical pipe. Therefore, the priming water can be supplied to the vertical pipe at an appropriate timing when the drainage substantially reaches the horizontal drawing pipe of the siphon drainage pipe, so that the retention of the drainage further hardly occurs.

  A third aspect is the siphon drainage system according to the second aspect, wherein the first drainage pipe is provided with a second sensor for detecting a water level of the first drainage pipe, and the first sensor is provided with the first sensor by the second sensor. When it is detected that the water level of the drain pipe has exceeded a predetermined value, the control unit issues an alarm.

  In this siphon drainage system, a second drainage sensor that detects the water level of the first drainage pipe is provided in a first drainage pipe connected between a water circulating device and a drainage trap. When the second sensor detects that the water level of the first drain pipe exceeds a predetermined value, the control unit issues an alarm. When the water level of the first drainpipe exceeds a predetermined value, it can be considered that drainage has accumulated on the upstream side of the drain trap, and a drainage failure (failure) has occurred in the siphon drainpipe. In this siphon drainage system, the occurrence of such a drainage defect can be notified to the user by an alarm.

  According to a fourth aspect, in the siphon drainage system according to the third aspect, the measurement log of the first sensor, the measurement log of the second sensor, and the issuance of the alarm are stored as data.

  In this siphon drainage system, since the measurement log of the first sensor, the measurement log of the second sensor, and the alarm issuance are stored as data, it is possible to easily confirm the history of drainage failure in the siphon drainage pipe.

  According to a fifth aspect, in the siphon drainage system according to the fourth aspect, the data is stored in a storage device via a network.

  In this siphon drainage system, the measurement log of the first sensor, the measurement log of the second sensor, and the data of the alarm issuance are stored in the storage device via the network. And remotely check the history of poor drainage.

  According to a sixth aspect, in the siphon drainage system according to any one of the first to fifth aspects, a connection connected to a pipe of the water supply unit is provided at a boundary between the horizontal drawing pipe and the vertical pipe. A port is provided, and the pipe is detachable from the connection port.

  In this siphon drainage system, since the pipe of the water supply section can be removed from the connection port provided at the boundary between the horizontal drawing pipe and the vertical pipe, by removing the pipe of the water supply section from the connection port, The connection port can be used as a cleaning port for the siphon drain. For this reason, it is easy to clean and inspect the siphon drainage pipe in an emergency response, for example, when a drainage failure occurs in the siphon drainage pipe.

  According to the siphon drainage system according to the present invention, it is possible to reduce the time lag from the start of drainage from the water supply device to the generation of siphon force, and to suppress the retention of drainage on the upstream side of the horizontal drawing pipe. Can be.

It is a sectional view showing the outline of the siphon drainage system concerning a 1st embodiment. It is a front view showing the outline of the siphon drainage system concerning a 1st embodiment. It is an expanded fragmentary sectional view showing the modification of the connecting part of piping of a water supply part, and a siphon drainage pipe. It is a sectional view showing the outline of the siphon drainage system concerning a 2nd embodiment. It is sectional drawing which shows the state which removed the piping of the water supply part from the connection port in the siphon drainage system which concerns on 2nd Embodiment.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

[First Embodiment]
First, the overall configuration of the siphon drainage system 10 according to the present embodiment will be described. FIG. 1 is a schematic diagram showing an entire configuration of a siphon drainage system 10 according to the present embodiment. The siphon drainage system 10 is a drainage system that efficiently drains drainage from a water supply device using siphon power. The siphon drainage system 10 includes a first drainage pipe 31, a drainage trap 18, a second drainage pipe 32, a horizontal drawing pipe 21, a vertical pipe 22, and a water supply unit 40.

  The siphon drainage system 10 is used, for example, in an apartment house composed of a plurality of floors, and includes a drain stack 12 for draining water downward as shown in FIG. The drain stack 12 extends in the up-down direction (longitudinal direction) of the apartment house, and penetrates the floor slab 14 on each floor of the apartment house.

  On each floor of the apartment house, a kitchen sink 16 is provided as an example of a watering device. A drain 30 is provided at the bottom of the kitchen sink 16. The drain 30 is installed so as to open to a drain 16 </ b> A provided at the bottom of the kitchen sink 16. Drainage from the kitchen sink 16 flows into the drainage section 30 through the drainage port 16A.

  The first drain pipe 31 is connected to the drain 30 of the kitchen sink 16. The first drain pipe 31 extends vertically and extends downward from the drain section 30. The drain trap 18 is connected to the downstream side of the first drain pipe 31. The drain trap 18 is, for example, an S-shaped trap. The second drain pipe 32 is connected to the downstream side of the drain trap 18. The second drain pipe 32 extends vertically and extends downward from the downstream end of the drain trap 18 to near the upper surface of the floor slab 14.

  The siphon drainage pipe 23 includes a horizontal drawing pipe 21 and a vertical pipe 22. The horizontal drawing pipe 21 is a pipe connected to the downstream side of the second drain pipe 32. The horizontal drawing pipe 21 extends in the horizontal direction on the floor slab 14 without any gradient. Drainage flowing from the second drain pipe 32 into the horizontal drawing pipe 21 flows in the horizontal drawing pipe 21 in the horizontal direction.

  The vertical pipe 22 is a pipe that is connected to the downstream side of the horizontal drawing pipe 21 and that causes drainage to flow downward from the horizontal drawing pipe 21. The vertical pipe 22 extends in the vertical direction (vertical direction) along the drainage stack 12. The siphon force is generated by dropping the drainage or the like flowing into the vertical pipe 22 from the horizontal drawing pipe 21 downward. A drainage joint 50 is provided between the downstream end of the vertical pipe 22 and the drainage stack 12 to connect the two. The drainage joint 50 joins drainage from the vertical pipe 22 to the drainage stack 12. The inner diameter of the horizontal pulling pipe 21 and the inner diameter of the vertical pipe 22 in the siphon drainage pipe 23 are, for example, 20 mm so that the drainage from the kitchen sink 16 can easily flow in a full state.

  The water supply unit 40 is connected to the boundary between the horizontal drawing pipe 21 and the vertical pipe 22 or the vertical pipe 22, and is configured to be able to supply priming water to the vertical pipe 22. Here, the boundary portion includes not only a portion where the horizontal drawing tube 21 and the vertical tube 22 are connected but also a downstream end of the horizontal drawing tube 21 which is upstream of the vertical tube 22. In the present embodiment, a curved portion 44 (an elbow tube or an L-shaped tube) that is curved in an arc shape is provided at a connection portion between the horizontal drawing tube 21 and the vertical tube 22.

  In the example shown in FIGS. 1 and 2, the lower end of the pipe 42 of the water supply unit 40 is connected to the upper end of the vertical pipe 22. In other words, the pipe 42 is provided on the extension of the vertical pipe 22 above. On the other hand, in the example shown in FIG. 3, the pipe 42 is connected to the bending portion 44 in a tangential direction. The angle θ between the upstream side of the horizontal drawing pipe 21 and the pipe 42 is an acute angle. This facilitates the flow of priming water from the pipe 42 to the vertical pipe 22 (in the direction of arrow A), and makes it difficult to flow back to the upstream side of the horizontal drawing pipe 21 (in the direction of arrow B). This configuration is particularly effective when the amount of priming water is large.

  In order to generate a siphon force at an early stage and to suppress the backflow of priming water to the upstream side of the horizontal drawing pipe 21, the connecting point of the pipe 42 of the water supply unit 40 to the siphon drain pipe 23 should be as close as possible to the vertical pipe 22. desirable. Note that the pipe 42 of the water supply unit 40 may be connected to the lower side of the upper end of the vertical pipe 22 as long as the siphon force can be generated by priming.

  The water supply unit 40 is provided with a valve 46 for switching the supply of priming water. The opening and closing of the valve 46 is controlled by a control unit 34 (FIG. 2) described later.

  In FIG. 2, the second drain pipe 32 is provided with a first sensor 51 for detecting passage of drain water in the second drain pipe 32. As the first sensor 51, for example, a pressure sensor or a conductive sensor can be used. In addition, as the first sensor 51, any sensor may be used as long as it can detect that drain water has flowed into the second drain pipe 32.

  The detection position by the first sensor 51 is, for example, the lower end of the second drain pipe 32. This is because it is easy to detect the timing at which the drainage flows into the horizontal pulling pipe 21 of the siphon drainage pipe 23. The position detected by the first sensor 51 may be another position in the second drain pipe 32. Further, a plurality of first sensors 51 may be provided. In this case, it is also possible to detect retention of drainage in the second drainage pipe 32.

  The siphon drainage system 10 further includes a control unit 34. The control unit 34 is a part that controls the operation of the water supply unit 40, specifically, the opening and closing of the valve 46, based on a signal from the first sensor 51. When the passage of drainage in the second drainage pipe 32 is detected by the first sensor 51, the control unit 34 activates the water supply unit 40 to supply priming water to the vertical pipe 22. Specifically, when the control unit 34 opens the valve 46, priming water is supplied to the vertical pipe 22 through the pipe 42.

  The pipe 42 of the water supply unit 40 is connected to, for example, water supply, but is not limited to this, and may be connected to a water storage tank (not shown) for rainwater or the like. That is, the priming water may be not only tap water but also stored water.

  The first drain pipe 31 is provided with a second sensor 52 for detecting the water level of the first drain pipe 31. The second sensor 52 is connected to the control unit 34. When the second sensor 52 detects that the water level of the first drain pipe 31 exceeds a predetermined value, the control unit 34 issues an alarm 36. The second sensor 52 is a sensor for detecting retention of drainage in the first drain pipe 31. As the second sensor 52, for example, a float sensor or a laser sensor that detects the height of the water surface can be used. In addition, as the second sensor 52, any sensor may be used as long as it can detect retention of drainage in the first drain pipe 31. The detection position by the second sensor 52 is, for example, the center of the first drain pipe 31 in the vertical direction.

  The position detected by the second sensor 52 may be another position on the first drain pipe 31. In order to detect stagnation of drainage in the first drain pipe 31 at an early stage, the detection position of the second sensor 52 is set at a lower part of the first drain pipe 31. Further, a plurality of second sensors 52 may be provided. By using the plurality of second sensors 52, it is possible to more accurately determine whether the drainage is flowing or staying in the first drainage pipe 31.

  The measurement log of the first sensor 51, the measurement log of the second sensor 52, and the alarm 36 are saved as data. Specifically, the data is stored in the storage device 49 via the network 48. The storage device 49 may be installed in a remote place away from the apartment house where the siphon drainage system 10 is installed, or may be installed in the apartment house. When the storage device 49 is installed at a remote location, the network 48 includes a WAN (Wide Area Network) such as the Internet. When the storage device 49 is installed in an apartment house, the network 48 corresponds to a LAN (Local Area Network). Note that a storage device (not shown) may be provided in or near the control unit 34 without using the network 48, and data may be stored in the storage device.

(Action)
The present embodiment is configured as described above, and its operation will be described below. In FIG. 1, according to the siphon drainage system 10, drainage discharged from the kitchen sink 16 flows through a drainage unit 30, a first drainage pipe 31, a drainage trap 18, and a second drainage pipe 32, and further, siphon drainage. It flows in the horizontal direction in the non-gradient horizontal drawing pipe 21 in the pipe 23. Next, the drainage falls down the vertical pipe 22, and the siphon force is activated by the potential energy of the siphon head Hs in the vertical pipe 22. Due to the siphon force, the drainage in the horizontal pulling pipe 21 and the vertical pipe 22 of the siphon drainage pipe 23 and the drainage in the second drainage pipe 32 are guided, and the drainage is promoted. For this reason, drainage and the like can be guided by the siphon force even if there is no downward slope descending to the vertical pipe 22 side in the horizontal drawing pipe 21. Note that the horizontal drawing pipe 21 may have a downward slope descending to the vertical pipe 22 side.

  In the present embodiment, the water supply section 40 can supply priming water to the vertical pipe 22 of the siphon drain pipe 23. Even when the drainage from the kitchen sink 16 moves in the horizontal pulling pipe 21 of the siphon drainage pipe 23 and does not reach the vertical pipe 22, the priming water is supplied to the vertical pipe 22 so that the inside of the vertical pipe 22 overflows. And a siphon force is generated. Once the siphon force is generated, a negative pressure is generated in the horizontal drawing pipe 21 and the air located between the drainage in the horizontal drawing pipe 21 and the priming water is drawn into the vertical pipe 22 and the drainage in the horizontal drawing pipe 21 It is drawn into the vertical pipe 22. Therefore, compared with the case where priming water is not supplied to the vertical pipe 22 or the case where priming water is supplied to the upstream side of the horizontal drawing pipe 21 such as the second drain pipe 32, the siphon is started after the drainage from the kitchen sink 16 is started. The time until the force is generated becomes shorter. For this reason, even when the horizontal drawing pipe 21 is long or the amount of drainage from the kitchen sink 16 is large, the drainage does not stay on the upstream side of the horizontal drawing pipe 21.

  Further, as shown in FIG. 2, in the present embodiment, the passage of the drainage in the second drainage pipe 32 is detected by the second drainage pipe 32 connected between the drainage trap 18 and the horizontal drawing pipe 21. A first sensor 51 is provided. When the passage of the drainage in the second drainage pipe 32 is detected by the first sensor 51, the control unit 34 operates the water supply unit 40. Specifically, the control unit 34 opens the valve 46 of the water supply unit 40. Thereby, priming water is supplied from the pipe 42 to the vertical pipe 22. Therefore, the priming water can be supplied to the vertical pipe 22 at an appropriate timing at which the drainage generally reaches the horizontal pulling pipe 21 of the siphon drainage pipe 23, so that the stagnation of the drainage further hardly occurs.

  Furthermore, in the present embodiment, the first drain pipe 31 connected between the kitchen sink 16 and the drain trap 18 detects the water level of the first drain pipe 31 and the second sensor connected to the control unit 34. 52 are provided. When the second sensor 52 detects that the water level of the first drain pipe 31 has exceeded a predetermined value, the control unit 34 issues an alarm 36. When the water level of the first drainage pipe 31 exceeds a predetermined value, it is determined that the drainage is retained in the first drainage pipe 31 on the upstream side of the drainage trap 18, and a drainage failure (failure) has occurred in the siphon drainage pipe 23. You can think. In the present embodiment, the occurrence of such a drainage failure can be notified to the user by the alarm 36.

  Further, in the present embodiment, since the measurement log of the first sensor 51, the measurement log of the second sensor 52, and the alert of the alarm 36 are stored as data, the history of drainage failure in the siphon drainage pipe 23 can be easily confirmed. can do. When the measurement log of the first sensor 51, the measurement log of the second sensor 52, and the data of the alarm 36 are stored in the storage device 49 via the network 48, the occurrence of the drainage failure in the siphon drainage pipe 23 occurs. Can be detected remotely, and the history of poor drainage can be remotely confirmed.

  As described above, according to the present embodiment, since the siphon force can be quickly generated by the priming, the temporary storage tank (not shown) for preventing the stagnation of the drainage is not required, or the temporary storage tank is not required. The temporary storage tank can be downsized even when the above is provided.

  When the drainage from the kitchen sink 16 is small, the vertical pipe 22 may not be full and no siphon force may be generated. However, according to the present embodiment, even when the drainage from the kitchen sink 16 is small, Siphon force can be generated quickly.

  In an apartment house, since a water supply system is provided in a piping space, the water supply unit 40 can be configured by branching a pipe from the water supply system. Therefore, a large space is not required for installing the water supply unit 40.

[Second embodiment]
4 and 5, in the siphon drainage system 20 according to the present embodiment, a connection port 54 connected to the pipe 42 of the water supply unit 40 is provided at the boundary between the horizontal drawing pipe 21 and the vertical pipe 22. . Specifically, a joint 56 with a cleaning port as an example of a boundary portion is provided between the downstream end portion of the horizontal drawing tube 21 and the curved portion 44. The cleaning port of the joint 56 with a cleaning port also serves as the connection port 54. The joint 56 with a cleaning port has a joint body 58 and a lid 60. The connection port 54 is provided in the joint main body 58. The connection port 54 is formed, for example, in a cylindrical shape. The lid 60 is a member for closing the connection port 54, and is detachable from the joint body 58 by screw fitting.

  The pipe 42 of the water supply unit 40 is detachable from the connection port 54. Specifically, as shown in FIG. 5, the lower end of the pipe 42 is inserted into the lid 60. As described above, since the lid 60 is detachable from the joint main body 58, the pipe 42 can be connected to the connection port 54 or can be removed from the connection port 54.

  In the siphon drainage system 20, the pipe 42 of the water supply unit 40 can be removed from the connection port 54 provided at the boundary between the horizontal drawing pipe 21 and the vertical pipe 22. By removing the connection port 54 from the connection port 54, the connection port 54 can be used as a cleaning port for the siphon drain pipe 23. For this reason, it is easy to clean and check the siphon drainage pipe 23 urgently when the drainage failure occurs in the siphon drainage pipe 23.

  The configuration of the connection port 54 connected to the pipe 42 of the water supply unit 40 is not limited to the above-described configuration. For example, a three-pronged pipe joint is provided at the boundary between the horizontal drawing pipe 21 and the vertical pipe 22 (shown in FIG. Instead, the pipe 42 may be detachable from the pipe joint.

  Other parts are the same as those of the first embodiment, and therefore, the same parts are denoted by the same reference numerals in the drawings, and description thereof will be omitted.

[Other embodiments]
As described above, an example of the embodiment of the present invention has been described. However, the embodiment of the present invention is not limited to the above, and other than the above, various modifications can be made without departing from the gist of the present invention. Of course there is.

  In the first embodiment, the first sensor 51 detects the passage of drainage in the second drainage pipe 32 and supplies priming water to the vertical pipe 22. However, the present invention is not limited to this, and priming is performed by a user operation. May be arbitrarily supplied.

10 siphon drainage system, 16 kitchen sink (water-supply equipment), 18 drain trap, 21 horizontal draw pipe, 22 vertical pipe, 23 siphon drain pipe, 31 first drain pipe, 32 second drain Pipe, 34 control unit, 36 alarm, 40 water supply unit, 42 pipe, 44 curved part (boundary part), 48 network, 49 storage device, 51 first sensor, 52 second sensor, 54: connection port, 56: joint with cleaning port (boundary part)

Claims (6)

A first drain pipe connected to a plumbing device,
A drain trap connected downstream of the first drain pipe;
A second drain pipe connected downstream of the drain trap,
A horizontal drawing pipe of a siphon drain pipe connected to a downstream side of the second drain pipe,
A vertical pipe of the siphon drainage pipe connected to a downstream side of the horizontal drawing pipe and flowing drainage from the horizontal drawing pipe downward;
A boundary portion between the horizontal drawing pipe and the vertical pipe, or a water supply unit connected to the vertical pipe and capable of supplying priming water to the vertical pipe,
Siphon drainage system with The second drain pipe is provided with a first sensor for detecting passage of drain water in the second drain pipe,
A control unit that controls the operation of the water supply unit based on a signal from the first sensor,
2. The siphon drainage system according to claim 1, wherein when the passage of drainage in the second drainage pipe is detected by the first sensor, the control unit activates the water supply unit to supply priming water to the vertical pipe. 3. The first drain pipe is provided with a second sensor for detecting a water level of the first drain pipe,
3. The siphon drainage system according to claim 2, wherein when the second sensor detects that the water level of the first drainage pipe has exceeded a predetermined value, the control unit issues an alarm. 4.   The siphon drainage system according to claim 3, wherein the measurement log of the first sensor, the measurement log of the second sensor, and the alarm aresuance are stored as data.   The siphon drainage system according to claim 4, wherein the data is stored in a storage device via a network. At the boundary between the horizontal drawing pipe and the vertical pipe, a connection port connected to the pipe of the water supply unit is provided,
The siphon drainage system according to any one of claims 1 to 5, wherein the pipe is detachable from the connection port.