JP2002129606A - Header piping system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discover water leakage from a water pipe in an early stage to prevent the expansion of damage caused by the water leakage in a header piping system wherein the water pipe is inserted through the inside of a shield tube, one end of the water pipe is connected to a header while the other end is connected to an automatic faucet, and a solenoid valve is opened by bringing a hand close to a sensor, to discharge water from a discharge pipe of the automatic faucet. SOLUTION: The solenoid valve 4 for opening/closing a passage to the water pipe 5 by a sensing signal from a sensor 13 is mounted in the upstream side of the water pipe 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a header for supplying water or hot water and an automatic faucet attached to a wash basin, a toilet, a sink, etc. in a house, connected by a water pipe protected by a sheath pipe. It relates to a header piping system.

[0002]

2. Description of the Related Art Generally, in apartment houses and detached houses,
When supplying water and hot water supply piping to wash basins, toilets, sinks, etc., a bellows-shaped sheath pipe is installed under the floor and behind the wall between each header of water and hot water and the faucet fittings when building the frame of the building. A sheath pipe method is provided in which a water supply pipe for water supply and hot water supply is inserted into the sheath pipe at an appropriate time later. This example is shown in FIG.
Briefly, the pipe connection between a header 21 for supplying water from a water supply source and a water faucet 22 attached to a wash basin or a toilet in a room in a house is made in advance by connecting a bellows-shaped sheath tube 25 behind the wall and under the floor. And a water pipe 26 made of a synthetic resin such as a polyethylene pipe is inserted into the sheath pipe 25 later,
A faucet box 28 is fixed to the back side of a wall plate 27 such as a wash basin or a toilet, and a sheath tube 25 is attached to a lower portion of the faucet box 28.
8, a joint 29 is attached to the tip of a water pipe 26 via an electromagnetic valve 30, and a faucet 22 connected to the tip of the joint 29 is connected to a sensor 24 attached to a tip of a water discharge pipe 23 so that a human body can be detected. When sensing, this sensing signal is transmitted by a code 31 to a control unit 32 attached to the faucet box 28, and an instruction from the control unit 32 is transmitted by the code 31 to the water pipe 2.
6 is transmitted to the electromagnetic valve 30 fixed between the joint 29 and the solenoid valve 30 is opened to start water flow from the water discharge pipe 23,
When the human body is no longer detected, the solenoid valve 30 is closed and the water discharge pipe 2 is closed.
3 to stop the flow of water.

[0003] In this sheath pipe method, construction can be performed extremely easily, and when the water pipe is deteriorated due to long-term use, it can be easily renewed. In addition, the water pipe is covered with the sheath pipe and externally. Although it is protected from damage and durability is improved without damage, if the water pipe reaches the end of its life and water leakage occurs, the water pipe is located upstream of the solenoid valve attached to the joint. Even if the faucet is shut off and the solenoid valve is closed, pressurized water is supplied from the header and water leakage from the water pipe continues to flood the underfloor. When the valve is opened, the water supplied into the water pipe is normally discharged from the water discharge pipe, so the user can use it without noticing the occurrence of water leakage and damage the interior materials of the building. Was to expand.

In order to prevent a water leak accident, a water leak sensor is installed under the floor. When a water leak occurs, the water leak sensor detects the water leak and operates a solenoid valve mounted on the header in a valve closing direction to connect the header to the water pipe. A technology has been proposed to prevent damage due to water leakage by shutting off the water flow path.In this case, the solenoid valve is normally open and does not operate unless water leakage occurs. There was a risk that foreign matter would adhere and would not operate properly when water leakage occurred.

[0005]

A problem to be solved by the present invention is that a water pipe is inserted into a sheath pipe, one end of the water pipe is connected to a header, the other end is connected to an automatic faucet, and a sensor is provided. In a header piping system that opens the solenoid valve by bringing your hand close to and discharges water from the water discharge pipe of the automatic faucet,
The purpose is to make it possible to detect the occurrence of water leakage from a water pipe at an early stage, and to prevent the damage caused by water leakage from spreading.

[0006]

SUMMARY OF THE INVENTION According to the present invention,
A water pipe is inserted into a sheath pipe provided under the floor or behind a wall in a house, one end of the water pipe is connected to a header for supplying water or hot water, and the other end is provided with an automatic water supply having a sensor and a water discharge pipe. In a header piping system that opens the solenoid valve by connecting the stopper to the sensor and brings the hand closer to the sensor to discharge water from the water discharge pipe, the solenoid valve that opens and closes the flow path to the water pipe according to the sensing signal from the sensor is used. , Installed upstream of the water pipe.

According to a second aspect of the present invention, the solenoid valve is mounted between a water pipe and a header.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. The present invention can be applied to, for example, general houses and the like. As shown in FIG. 1, a water supply pipe 1 connected to a water supply source is provided in a room of a building, and the water supply pipe 1 is supplied from the water supply source. Water is connected to a header 2 that can be branched into a plurality of places such as a wash basin, a toilet, and a sink.

The header 2 is used to distribute water supplied from the water supply pipe 1 to an automatic faucet 11 attached to a washstand, a toilet, a sink, or the like, which is disposed at a predetermined position in a room of a building. A plurality of supply units 3 are mounted at predetermined intervals along the longitudinal direction. Each supply unit 3 includes a solenoid valve 4 that opens and closes a water flow path by a signal from a sensor 13 described later, and a polyethylene. A water pipe 5 made of a synthetic resin such as a pipe or a polybutene pipe is connected to the water pipe 5. The water pipe 5 is disposed in advance under the floor and behind a wall, and has a bellows-shaped sheath pipe whose end is raised toward the header 2. 6 is inserted.

The automatic faucet 11 attached to the wall plate 7 includes a water pipe 5 exposed upward from a sheath tube 6 standing up along the wall plate 7 and a box 8 fixed to the back of the wall. It is connected via a housed elbow-shaped joint 9 and has a sensor 13 for sensing an article such as a hand inserted in the front at the tip of a water discharge pipe 12 for discharging water. The controller 10 fixed in the box 8 is connected to the sensor 13 via the cord 14, and the controller 10
And the solenoid valve 4 are also connected via a cord 14a.

Therefore, when the user puts his hand toward the sensor 13 of the automatic faucet 11, the sensor 13 senses his hand, and based on the sensed signal, a sensing signal is transmitted to the controller 10 by the code 14, and furthermore, Code 14a
A signal from the controller 10 is transmitted to the electromagnetic valve 4, the electromagnetic valve 4 is opened, water is supplied from the header 2 to the water pipe 5, and water is automatically supplied from the water discharge pipe 12 of the automatic faucet 11 to the outside. Are supplied to Next, when you move your hand away from the sensor 13, the sensor 13 will no longer detect your hand,
The electromagnetic valve 4 is closed by a signal from the controller 10, and the supply of water is stopped.

Since the solenoid valve 4 is mounted between the header 2 and the water pipe 5 on the upstream side of the water pipe 5, the water pipe on the downstream side of the solenoid valve 4 that is closed when water is stopped. No water is supplied from the header 2 to the pipe 5, the pressurized water does not act on the water pipe 5, and if the water pipe 5 has deteriorated due to long-term use, etc., water will leak until the residual water in the water pipe 5 is exhausted. Followed by
Therefore, if the water stopping state continues for a long time, all the water in the water pipe 5 is drained, and when water is discharged from the automatic faucet 11 next, since no water exists in the water pipe 5, the solenoid valve 4 is turned off. It takes a while until the valve is opened and the water discharge from the water discharge pipe 12 is started, and the user can notice occurrence of an abnormality such as water leakage of the water flow pipe 5.

[0013]

According to the first aspect of the present invention, a water pipe is inserted into a sheath pipe provided under the floor or behind a wall in a house, and one end of the water pipe is connected to a header for supplying water or hot water. The other end is connected to an automatic faucet equipped with a sensor and a water discharge pipe, and in a header piping system in which the solenoid valve is opened by bringing a hand close to the sensor to discharge water from the water discharge pipe, a sensing signal from the sensor is provided. The solenoid valve that opens and closes the flow path to the water pipe is installed upstream of the water pipe, so if the water pipe deteriorates due to long-term use, etc. Since the solenoid valve mounted on the upstream side is closed, it is possible to drain all the water in the water pipe to the outside. Is not spouted, so it is possible to quickly recognize the occurrence of water leakage, etc. Come, it is possible to prevent the spread damage caused by water leakage.

According to the second aspect, since the solenoid valve is mounted between the water pipe and the header, it can be easily mounted.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a header piping system of the present invention.

FIG. 2 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 2 Header 4 Solenoid valve 5 Water pipe 6 Sheath pipe 11 Automatic faucet 12 Water discharge pipe 13 Sensor

Claims (2)

[Claims] 1. A water pipe is inserted into a sheath pipe provided under a floor or behind a wall in a house, one end of the water pipe is connected to a header for supplying water or hot water, and the other end is provided with a sensor and a water discharge pipe. In a header piping system that connects to an automatic faucet equipped with a valve and opens the solenoid valve by bringing the hand close to the sensor to discharge water from the water discharge pipe, the flow path to the water flow pipe is detected by the sensor signal from the sensor. A header piping system, wherein a solenoid valve that opens and closes is mounted on an upstream side of a water pipe. 2. The header piping system according to claim 1, wherein the solenoid valve is mounted between a water pipe and a header.