JP2005113584A - Drainage system for building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drainage system for a building in which one drain pump is used to drain a plurality of water sections. <P>SOLUTION: In this drainage system for the building, a miniature basin 19, which is attached to a waterproof pan 17, is provided in the state of being elongated downward above a predetermined value, and drain pipes 27 and 30 from other water sections except the waterproof pan 17 are connected to a lower part of the miniature basin 19. An inflow port 34a of a drain pump 33 is connected to the lower part of the miniature basin 19 via a check valve 32 for preventing a backflow into a drainage chamber 19d, and the drain pump 33 is provided with a drain inlet 34b which is positioned above the inflow port 34a and which communicates with sewage. Additionally, a pressure sensor 38 for outputting a detection signal by detecting the supply of the drain water into the miniature basin 19 is provided, and a control circuit 39 for actuating the drain pump 33 by receiving the detection signal is provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

TECHNICAL FIELD The present invention relates to a building drainage system that uses a hollow drainage portion projecting from a lower surface of a waterproof pan to drain water from the product on the waterproof pan and drainage from other water use locations into sewage. It is.

As shown in Fig. 3, in a conventional building, when drainage pipes such as bathroom drainage, kitchen drainage, and toilet drainage are plumbed, the plumbing can be easily performed and the piping route can be easily changed. By adopting a double floor structure in which an upper floor plate 3 is provided at an interval on the lower floor 2 in the washroom 1, a piping space 4 for a drain pipe is provided between the lower floor 2 and the upper floor plate 3. (See, for example, Patent Document 1).

In such a building, a waterproof pan 5 is installed on the upper floor board 3, a drain pipe 7 disposed in the piping space 4 is connected to a drain trap 6 of the waterproof pan 5, and washing is performed on the waterproof pan 5. It is also conceivable to place the machine 8 as a product using water and connect the drain port of the washing machine 8 to the drain trap 6 (see, for example, Patent Document 2).

However, conventionally, the drainage pipe 7 is inclined to guide the domestic wastewater from the drain trap 6 to the sewer by its own weight. For this reason, it is necessary to increase the distance between the lower floor 2 and the upper floor board 3.

In addition, some conventional buildings are provided with a forced drainage system that forcibly drains domestic wastewater generated from a water use place such as a sink with a drainage pump (for example, Patent Document 3).
reference).

It is also possible to interpose this drainage pump in the middle of the drainage pipe 7 of FIG. 3 so that the drainage from the washing machine 8 is forcibly drained into the sewage by the drainage pump.
JP-A-8-120722 JP 2002-188195 A JP-A-2-304128

By the way, generally in a residential building, there are usually a plurality of places where water is used. In such a building, when a drainage pump for domestic wastewater as described above is provided, it is necessary to provide a drainage pump for each location where water is used in consideration of drainage efficiency and the like.

However, it is desirable that the drainage of a plurality of water use places can be performed with one drainage pump without providing an expensive drainage pump for each water use place.

Accordingly, an object of the present invention is to provide a building drainage system that can drain a plurality of water use places with a single drainage pump.

In order to achieve this object, the present invention provides a piping space between the lower floor and the upper floor board by supporting the upper floor board via a floor board support member on the lower floor of the building, Water that is provided on the waterproof pan is formed by forming an opening for the waterproof pan, closing the opening with the waterproof pan, and providing the waterproof pan with a hollow drainage portion that projects into the piping space and communicates with sewage. In a building drainage system in which a drainage port from a product used is connected to a drainage chamber of the hollow drainage part, the hollow drainage part is extended downward from a predetermined value so that the waterproof pan is disposed below the hollow drainage part. Connect a drain pipe from a place other than the water use, and connect a drain pump inlet to the bottom of the hollow drainage section via a check valve that prevents back flow to the drain chamber. Above the inlet And a control circuit for providing a drainage port communicating with the sewage, providing drainage detection means for detecting the supply of drainage into the hollow drainage part and outputting a detection signal, and operating the drainage pump in response to the detection signal It is characterized by being a building drainage system.

According to this configuration, when drainage from the water-use product on the waterproof pan flows into the hollow drainage part,
Alternatively, when drainage from other water use places other than the waterproof pan flows into the hollow drainage part, the inflow of the drainage is detected by the drainage detection means, and the drainage detection means outputs a drainage detection signal. Then, the control circuit receives the detection signal, operates the drain pump, and forcibly drains the drain water flowing into the hollow drain section into the sewage by the drain pump.

Here, since the hollow drainage part is extended downward and larger than a predetermined value, the capacity | capacitance in a hollow drainage part is large. For this reason, the drainage pump operates before drainage from other water use places other than the waterproof pan flows into the hollow drainage section, and even if this drainage rises in the hollow drainage section, it rises to the waterproof pan side. So drainage does not flow back onto the waterproof pan.

Moreover, the drainage port in the drainage pump is disposed above the inflow port, and a check valve for preventing the drainage from flowing backward to the hollow drainage unit side between the inflow port of the drainage pump and the hollow drainage unit is provided. Since it is interposed, when the drainage pump is stopped, the drainage is always stored and sealed between the inflow port and the drainage port in the drainage pump. For this reason, it is not necessary to make the hollow drain part provided in the waterproof pan into the drain trap structure.

As a result, drainage from other water use places other than the waterproof pan can be easily joined to the hollow drainage section.

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

In FIG. 1, 10 is a washroom of a building (collective housing) such as a condominium or an office building, 11 is a lower floor of the washroom 10, 12 is an upper floor board disposed on the lower floor 11 at a predetermined interval,
Reference numeral 13 denotes a floor board support member that supports the upper floor board 12 on the lower floor 11.

This upper floor board 12 is added when renovating a building (a collective housing) such as a condominium or an office building, or provided when a new building is constructed. A piping space 14 is provided between the lower floor 11 and the upper floor board 12.

Further, a square opening 15 for a waterproof pan is formed in the upper floor board 12, and a rectangular frame 16 is attached to a portion along the opening 15 of the upper floor board 12. The peripheral edge of the waterproof pan 17 covering the opening 15 is fixed on the frame body 16.

As shown in FIG. 2, the waterproof pan 17 has a small-diameter mounting opening 18, and the waterproof pan 17 has a circular stepped portion 17 a along the mounting opening 18. This mounting opening 18
A bottomed cylindrical miniature gutter (hollow drainage part) 19 that is open at the top and has a bottomed cylindrical shape is inserted downward.

A flange 19 a directed outward is formed at the upper end portion of the miniature trough (hollow drainage portion) 19. The flange 19a is placed on the stepped portion 17a. The flange 19a is detachably fixed to the step portion 17a with a screw or the like (not shown).

A circular step 19b is formed on the inner peripheral side of the flange 19a.
An air-permeable lid 20 is supported on the front. The lid 20 closes the upper opening 19c of the miniature basket 19. Reference numeral 20 a denotes an insertion hole provided in the center of the lid 20.

In the insertion hole 20a, as shown in FIG. 2B, the washing machine (
A drainage pipe 22 such as a drainage pipe or drainage hose of the product 21 using water is inserted. As a result, the drainage port 22 a in the drainage pipe 22 is connected to the drainage chamber 19 of the miniature trough (hollow drainage part) 19.
connected to d.

The miniature rod 19 is extended downward larger than a predetermined value. 1 and 2
In (a), the miniature basket 19 is extended deeply to a position substantially close to the lower floor 11. In FIG. 1 and FIG. 2 (a), the amount of downward protrusion of the miniature rod 19 is set to be approximately twice or more that of a normal drain trap. A connection port (drainage inlet) 19e and a connection port (drainage discharge port) 19f located on opposite sides are provided at the ends of the miniature rod 19.

Further, as shown in FIG. 1, on the upper floor plate 12, a washstand (water main product) 23 disposed in the washroom 10 adjacent to the waterproof pan 17 is installed. This wash basin 23
A wash basin 24 is attached to an intermediate portion in the vertical direction, and a faucet 25 is attached to the wash basin 24. A drainage pipe 27 extending downward is connected to the lower end of the recess 26 that receives water from the basin 24. Reference numeral 28 denotes a base plate at the lower end of the washstand 22.

The drain pipe 27 passes through the base plate 28 and the upper floor plate 12 and is connected to the piping space 14.
It is arranged in the upper part. One end of a drain pipe 30 is connected to the lower end of the drain pipe 27 via an elbow 29.

As shown in FIG. 2, the drain pipe 30 has a connection port 19e at the lower end portion of the miniature rod 19.
And is fixed on the lower floor 11 by a plurality of pipe fixing saddles 31. And the lower end part of this drainage pipe 30 is the connection port 1 of the lower end part of the miniature rod 19.
9e is connected.

Further, as shown in FIGS. 1 and 2A, a check valve 32 and a drainage pump 33 are disposed on the connection port 19f side of the lower end portion of the miniature rod 19. This drain pump 33 is shown in FIG.
), A pump casing 34, an impeller 35 disposed in the pump casing 34, and an electric motor (drive motor) 36 that rotationally drives the impeller 35 are provided. The impeller 35 may be a centrifugal type or a vortex type. In addition, as this drainage pump 33, the thing of types other than these can also be used.

The pump casing 34 is formed with an inflow port 34a facing the center of the impeller 35, and a drain port 34b is formed above the inflow port 34a.
In FIG. 2A, the drain port 34 b is provided at the upper end of the pump casing 34. A connection port 19 f at the lower end of the miniature rod 19 is connected to the inflow port 34 a through a check valve 32.

This check valve 32 allows drainage to flow from the connection port 19f to the inlet 34a side of the drainage pump 33, and prevents drainage from flowing backward from the inlet 34a of the drainage pump 33 to the drainage chamber 19d side. It is like that. Since the check valve 32 can be of a known structure, a detailed description thereof will be omitted.

A drain pipe 37 communicating with the sewage is connected to the drain port 34 b of the drain pump 33. The drainage port 34b and the drainage pipe 37 are horizontally disposed for a predetermined length L or more from the end of the pump casing 34. Thereby, air bleeding from the pump casing 34 is promoted.

A pressure sensor 38 is attached to the connection port 19f at the lower end of the miniature rod 19 as a drainage detection means. In FIG. 2A, the pressure sensor 38 is attached to the lower end of the connection port 19f, but the present invention is not necessarily limited thereto. For example, the pressure sensor 38 may be attached to the upper end portion of the connection port 19f or the upper portion of the bottom wall 19g of the drainage chamber 19d of the miniature rod 19.

The pressure sensor 38 detects a predetermined pressure when the supply amount of the wastewater into the drainage chamber 19d of the miniature basket 19 becomes a predetermined amount or more, and outputs a detection signal. This detection signal is shown in FIG.
As shown in FIG. 2, the signal is input to the control circuit 39. Then, the control circuit 39
When the detection signal from the pressure sensor 38 is received, the electric motor 36 of the drainage pump 33 is operated to rotate the impeller 35, and the domestic wastewater sucked from the inflow port 34a is discharged from the drainage port 34b. .

  Next, the operation of the building drainage system having such a configuration will be described.

A drainage liquid 40 having a liquid surface 40a positioned above the connection port 19f is stored at the bottom of the above-described miniature basket 19 in the drainage chamber 19d. Also, in the pump casing 34 of the drainage pump 33, the drainage liquid 41 reaching the liquid level 41a to the vicinity of the drainage port 34b is stored by the action of the check valve 32. Thereby, the inside of the pump casing 34 has a sealed structure.

In this state, the domestic wastewater from the washing machine 21 on the waterproof pan 17 flows into the drainage chamber 19d of the miniature basket 19 by its own weight, or the domestic wastewater from the washbasin 24 of the washstand 23 is drained from the drain pipe 27,
It flows by its own weight into the drainage chamber 19d through the elbow 29 and the inclined drainage pipe 30.

When the amount of the drainage liquid 40 in the drainage chamber 19d becomes a certain amount due to this inflow, for example, when the drainage liquid 40 liquid level 40a in the drainage chamber 19d becomes approximately half in the vertical direction, the pressure sensor 38 is in the drainage chamber 19d. The detection signal is output by detecting the inflow of domestic wastewater. This detection signal is input to the control circuit 39.

When the control circuit 39 receives the detection signal from the pressure sensor 38, the drain pump 3
3, the impeller 35 is rotated. Thereby, the drainage pump 3
3 opens the check valve 32 and sucks the domestic wastewater in the drainage chamber 19d into the pump casing 34 through the check valve 32 and the inflow port 34a, and discharges the sucked domestic wastewater from the drain port 34b. The domestic wastewater discharged from the drainage port 34 b is forcibly drained into the sewage through the drainage pipe 37.

Although the drain port 34b and the drain pipe 37 are configured horizontally by a predetermined length L as shown in FIG. 1 to facilitate air bleeding from the pump casing 34, the present invention is not limited to this. is not.

For example, as shown by a broken line in FIG. 1, the drain port 34b and the drain pipe 37 are tilted upward by a predetermined length L or more from the end of the pump casing 34, or the drain pipe 37 is tilted upward by a predetermined length L or more. Thus, air bleeding from the pump casing 34 may be further promoted.

In the above-described embodiment, the pressure at the connection port 19f is detected by the pressure sensor 38, but the present invention is not necessarily limited to this. For example, a pressure sensor 38 may be disposed at the bottom of the pump casing 34 as indicated by a two-dot chain line in FIG. The position where the pressure sensor 38 is disposed may be anywhere in the pump casing 34 as long as it is below the approximate center of the pump casing 34 in the vertical direction. According to such a configuration, the surface of the pressure detection unit of the pressure sensor 38 is always cleaned by the flow of the waste water sucked by the rotation of the impeller 35, so that the detection sensitivity of the pressure sensor 38 can be prevented from being lowered. .

As described above, the building drainage system according to the embodiment of the present invention has the lower floor 11 of the building.
By supporting the upper floor board 12 via the floor board support member 13 on the upper side, a piping space 14 is provided between the lower floor 11 and the upper floor board 12, and an opening 15 for a waterproof pan is formed in the upper floor board 12. The opening 15 is closed with a waterproof pan 17, and a hollow drainage portion (miniature rod 19) that projects into the piping space 14 and communicates with sewage is provided on the waterproof pan 17, and is disposed on the waterproof pan 17. The drainage port 22a from the installed water-use product (washing machine 21) is connected to the hollow drainage part (
It is connected to the drainage chamber 19d of the miniature rod 19).

Further, in this building drainage system, the hollow drainage portion (miniature ridge 19) extends downward from a predetermined value and extends to a lower portion of the hollow drainage portion (miniature ridge 19) other than the waterproof pan 17. The drainage pipes 27 and 30 from the water use place (the wash basin 23) are connected. In the above-described embodiment, the example of the wash basin 23 is shown as a place where water other than the waterproof pan 17 is used. However, the embodiment is not necessarily limited thereto. For example, when a sink is newly added at the time of renovation or a simple shower room is added, the sink or shower room can be used as a place for water use other than the waterproof pan 17. In short, as long as the domestic wastewater is drained from the place where water is used, the water can be used other than the waterproof pan 17.

Furthermore, in this building drainage system, the inlet 34a of the drainage pump 33 is provided via a check valve 32 that prevents backflow into the drainage chamber 19d at the lower part of the hollow drainage section (miniature ridge 19).
The drainage pump 33 is provided with a drainage port 34b positioned above the inflow port 34a and communicating with the sewage. In addition, a drainage detection means (pressure sensor 38) for detecting the supply of drainage into the hollow drainage part (miniature rod 19) and outputting a detection signal is provided, and the drainage pump 33 is operated in response to the detection signal. A control circuit 39 is provided.

According to this configuration, when drainage from the water-use product (washing machine 21) on the waterproof pan 17 flows into the hollow drainage portion (miniature basket 19), or other water use place (wash surface) other than the waterproof pan 17 When drainage from the pedestal 23) flows into the hollow drainage section (miniature rod 19), the inflow of the drainage is detected by the drainage detection means (pressure sensor 38), and the drainage detection means (pressure sensor 38) detects the drainage. Output a signal. Then, the control circuit 39 receives the detection signal and operates the drain pump 33, and the drain pump 33 forcibly drains the waste water flowing into the hollow drainage section (miniature rod 19) into the sewage.

Here, since the hollow drainage portion (miniature rod 19) extends downward from a predetermined value, the capacity in the hollow drainage portion (miniature rod 19) is large. For this reason, drainage from other water use places (basin 23) other than the waterproof pan 17 flows into the hollow drainage section (miniature basket 19), and this drainage rises within the hollow drainage section (miniature bowl 19). Even if the drainage pump 33 operates before it rises greatly toward the waterproof pan 17, the drainage does not flow back onto the waterproof pan 17.

Moreover, the drainage port 34b in the drainage pump 33 is disposed above the inflow port 34a, and the drainage is between the inflow port 34a of the drainage pump 33 and the hollow drainage portion (miniature rod 19). Since the check valve 32 for preventing the reverse flow to the 桝 19) side is interposed, when the drain pump 33 is stopped, the drain (drainage liquid) is always provided between the inlet 34a and the drain outlet 34b in the drain pump 33. 41) is stored and sealed. For this reason, it is not necessary to make the hollow drainage part (miniature rod 19) provided in the waterproof pan 17 into the drainage trap structure.

As a result, drainage from other water use places (basin 23) other than the waterproof pan 17 can be easily merged into the hollow drainage section (miniature basket 19).

In the building drainage system according to the embodiment of the present invention, the drainage pump 33 and the check valve 32 are provided integrally with the hollow drainage portion (miniature rod 19) and unitized with the waterproof pan 17. .

Thus, by reassembling the living room of the building by assembling the check valve 32 and the drainage pump 33 into the hollow drainage part (miniature rod 19) of the waterproof pan 17,
By installing the waterproof pan 17 on the floor, a forced drainage system can be easily provided.

It is a piping diagram of the building drainage system according to the present invention. (A) is a principal part expanded sectional view which expanded and illustrated a part of FIG. 1, (b) is an expanded sectional view of the attachment part to the waterproof pan of the miniature bag of (a). It is a piping diagram showing an example of a building drainage system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Lower floor 12 ... Upper floor board 13 ... Floor board support member 14 ... Piping space 15 ... Opening 17 ... Waterproof pan 19 ... Miniature tub (hollow drainage part)
19d ... Drainage chamber 27, 30 ... Drain pipe 21 ... Washing machine (product using water)
22a ... Drain outlet 23 ... Wash stand (water use place)
32 ... Check valve 33 ... Drain pump 34a ... Inlet 34b ... Drain port 38 ... Pressure sensor (drainage detecting means)
39 ... Control circuit

Claims (2)

By supporting an upper floor board via a floor board supporting member on the lower floor of a building, a piping space is provided between the lower floor and the upper floor board, an opening for a waterproof pan is formed in the upper floor board, and the opening The waterproof pan is provided with a hollow drainage portion that protrudes into the piping space and communicates with sewage, and the drainage port from the water-use product disposed on the waterproof pan is provided with the hollow drainage portion. In the building drainage system connected to the drainage chamber of
The hollow drainage part is extended downward downward from a predetermined value, and a drainage pipe from a water use place other than the waterproof pan is connected to a lower part of the hollow drainage part, and the lower part of the hollow drainage part is The inlet of the drainage pump is connected via a check valve that prevents backflow to the drainage chamber, the drainage pump is provided with a drainage port located above the inlet and communicating with the sewage, and in the hollow drainage section. A drainage system for buildings, comprising drainage detection means for detecting supply of drainage to the vehicle and outputting a detection signal, and a control circuit for receiving the detection signal and operating the drainage pump. The building drainage system according to claim 1, wherein the drainage pump and the check valve are provided integrally with the hollow drainage unit and unitized with the drainage pan.

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