JPH0312604B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] When the present invention detects water leakage in the water supply system, hot water supply piping system, or other water supply system in a residence, it simultaneously generates an alarm and
This invention relates to a device that closes a water supply cutoff valve provided in a water supply pipe to stop water supply and prevent water leakage that would cause serious damage.

[Conventional technology and its problems] In housing complexes made of reinforced concrete, water is supplied from the main water pipe to each dwelling unit by branches, and each dwelling unit's piping is connected to the slab by water supply pipes, hot water pipes, etc.
Drainage pipes are arranged and the upper parts are covered with floorboards. The water supply for each dwelling unit is the main water supply pipe 1.
A water meter 13 is connected from the water meter 1 through a branch pipe 12, and a water supply and distribution pipe is installed so that water can be supplied from the water meter 13 to the toilet bowl (including the system tank), wash area, laundry area, bathroom, kitchen, etc. A system tank, water tank, etc. are installed at each location via a water supply valve. However, as these water supply and distribution pipes and drainage pipes become damaged or leak over time, or as equipment and lifestyles change, there is an increase in water leakage accidents due to operational errors, such as overfilling washing machines or incorrect drainage. are doing. This is due to residents' lack of awareness of communal living in apartment complexes, indifference to equipment maintenance, or lack of attention to plumbing installed on non-waterproof floors, as well as plumbing equipment. There is.

Therefore, when a water leakage accident occurs, it causes serious damage not only to the dwelling unit where the water leakage occurred, but also to other neighboring dwelling units, especially those on the lower floors. In order to prevent this water leak accident, a water leak detection sensor is installed on the floor around the water area, and when a water leak occurs, this sensor detects it and activates a water leak alarm device connected to the sensor to notify residents. Water leak alarm devices have been installed. However, it is impossible to predict when a water leak will occur, and if the water leak occurs when the resident is not present, even if this device activates and issues an alarm, the water supply to the residence cannot be cut off, and the water leak will continue. Damage cannot be completely prevented.

In view of this, the present invention is designed to immediately cut off the water supply in the residence when detecting water leakage from equipment piping such as water supply and hot water supply piping in the residence, as well as sanitary appliances and housing equipment connected thereto, to eliminate the damage or Aim to do as little as possible.

[Measures to solve the problem] Install an electric water supply cutoff valve on the water supply pipe in the residence, preferably near the water meter, and install a water supply shutoff valve on the floor or under the floor in the residence, or at any location where water leakage can be detected. A water leak alarm detection system that is equipped with a water leak detection sensor that detects water leaks, is installed at any location that can notify or operate the resident, and is equipped with an alarm circuit that issues an alarm by sound or light, and a control circuit that shuts off the valve. The device is electrically connected to the water leakage detection sensor and valve, and when the sensor detects water leakage from the piping system or equipment system, an alarm is issued to notify residents, and the water supply is also stopped at the same time to prevent water leakage accidents. To prevent.

[Example] The present invention will be described below based on an example shown in the drawings.

The drawing is a cross-sectional explanatory diagram showing only the main water supply and hot water supply points for one housing complex such as a condominium, but this is a rough outline and does not include the location and number of sanitary appliances and housing equipment. It is not limited.

R is a room representing one residential unit in an apartment complex, and this room is divided into a toilet R1, a washbasin/bathroom R2, and a kitchen R3 at predetermined positions.Toilet R1 is equipped with a flush toilet 1, and washbasin/bathroom R2 is equipped with a flush toilet 1. Wash basin 2, bathtub 3,
A washing machine storage space 4 is provided, a sink 5 and the like are provided in the kitchen R3, and washers 6, 6, etc. are provided to supply water and hot water to sanitary equipment and household equipment.

Furthermore, water is supplied to each dwelling unit via branch water pipes 12 from a main water pipe 11 that is piped within the housing complex.
This branch water supply pipe 12 is provided with a water stop valve 14 and a water meter 13, and from this water meter 13 a water supply pipe 15 is provided.
Water is piped to the above-mentioned sanitary equipment and housing equipment through the water supply pipe 15, and a water supply cutoff electric valve 16 (hereinafter referred to as a cutoff valve) is disposed in the water supply pipe 15, preferably near the water meter 13. This water supply pipe 15 is usually installed directly on the concrete slab R _s . Then, this water supply pipe 15 is branched so that water can be supplied to each of the above-mentioned washers 6 or sanitary equipment. In addition, a plurality of water leakage detection sensors 17, 17, etc. are installed on the floor surface F around the plumbing of sanitary equipment or housing equipment, or under the floor, or any other arbitrary location where water leakage can be detected. The sensitivity of this sensor 17 may not be very sensitive.
For example, in the winter, it will not work if there is moisture condensing on the floor or when it is wiped clean, but if there is even a small amount of water leakage, it will be detected. Each water leak detection sensor 17 is electrically connected to a water leak alarm detector 18. The water leak alarm detector 18 includes an alarm circuit that issues an alarm, such as sound or light, when it receives a signal indicating that a water leak has been detected by the sensor 17, and a control circuit that issues a signal to close the water supply cutoff valve 16. Moreover, it is installed in a position where it can notify residents and can be operated, and the water leak alarm detector 18 and the valve 16 are electrically connected, and the valve 16 is actuated by a signal from the detector 18. Let them do it.

In the water supply cutoff device configured as described above, if water leaks from sanitary equipment, a washing machine, a single dish, or even due to a break in the water supply pipe, the water leak detection sensor near the leak location will be activated. The electrode contacts the flowing water (leakage) and conducts, thereby detecting the water leakage. This sensor is detector 1
8, when a weak current flowing through the sensor is applied to this detector 18, the alarm circuit inside this detector 18 is activated, and a voice alerts the occupants saying, "There is a water leak!" At the same time as the notification, the water leakage cutoff circuit also operates to close the cutoff valve 16. This stops the water supply to the residence, preventing further water leakage and eliminating any damage caused by it.

Furthermore, if the control circuit of the water leak alarm detector can be manually operated to close the shutoff valve, it will provide a sense of security even when the resident is absent for a long period of time by keeping this valve closed.

[Effect of the invention] According to the present invention, the floor surface and under the floor around plumbing in the house,
Water leaks occur because the water leak detection sensor installed at any other location is electrically connected to the alarm circuit, the water leak alarm detector equipped with a water leak cutoff control circuit, and the cutoff valve connected to the water supply pipe in the residence. The sensor detects this, notifies the resident via voice, and immediately shuts off the water supply, so even if the resident is not home, if even the slightest leak occurs, the water supply can be stopped, preventing water leakage to the downstairs or neighboring house. This has the advantage of being able to prevent damage from occurring.

[Brief explanation of the drawing]

The drawing is a schematic explanatory diagram showing an alarm and water supply cutoff device based on water leakage detection according to the present invention. 11 is a main water supply pipe, 12 is a branch pipe, 13 is a water meter, 14 is a water stop valve, 15 is a water supply pipe, 16 is a shutoff valve, 17 is a sensor, and 18 is a water leakage alarm detector.

Claims (1)

[Claims] 1 Water leakage sensor installed on the plumbing floor, under the floor, or any other location in the house, and installed at the desired location.
In addition, it is electrically connected to a water leak alarm detector equipped with an alarm circuit and a control circuit, and the signal from this detector is used to operate and close the water supply cutoff electric valve installed in each residential water supply pipe system, and to detect the occurrence of water leakage. An alarm and water supply cutoff device based on water leakage detection, characterized in that it issues an alarm and also stops the water supply within a dwelling unit.