JP2002115285A - Water supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water supply system, in which the position of water supply having few frequency in use can be installed, while sanitary consideration is conducted, usability is improved and new water-section environment can be created. SOLUTION: In the water supply system, in which a header is connected to a main water supply pipe and branch pipings are connected from the header to water supply sections, header on-off valves are mounted among the header and the branch pipings, and water supply on-off valves having flow control means capable of adjusting openings are secured to the water supply sections. In the water supply system, in which the main water supply pipe is joined with the header and the branch pipings are connected from the header to the water supply sections, the header on-off valves having the flow control means are set up among the header and the branch pipings, and check valves are fitted to spout sections for the water supply sections.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a water supply system.

[0002]

2. Description of the Related Art Conventionally, there is a water supply system in a header construction method in which a main water supply pipe is connected to a header and a branch pipe is connected from the header to a water supply section. The water supply system in the header construction method has improved workability by using a flexible resin pipe. Furthermore, since the resin pipe can be bent to lay the pipe, the number of joints connected in the pipe path can be reduced, and the risk of water leakage from the joints can be reduced. In addition, the sheath pipe is laid in advance, and the resin pipe is inserted into the sheath pipe, so that the renewability of the resin pipe can be improved. However, the water supply system in the header method described above improves the workability, water leakage prevention property, and renewability in constructing the pipe compared to the case where the steel pipe and the elbow are connected with the pipe, but the water supply is performed. In doing so, usability has not yet been considered.

[0003] Therefore, the inventor of the present invention focused on the usability in supplying water in the water supply system in the header method, and worked diligently to provide a new water environment. First, the water environment and the electric environment were compared, and it was examined whether the water environment could be made the same as the electric environment. In other words, water can be easily obtained not only in places that normally require water such as bathrooms, kitchens, vanities, and toilets, but also in other living spaces such as entrances, corridors, stairs, living rooms, and bedrooms. We examined whether we could provide a new comfortable water environment. Therefore, focusing on the ease of piping construction in the header method,
A place where water can be obtained anywhere other than a place where the user frequently uses the water is provided to provide an environment where water can be obtained, such as obtaining electricity from an electric outlet.

[0004] However, when providing a water supply point that is used less frequently, it is necessary to solve a problem specific to water that is not found in gas or electricity. First, unlike electricity, water may decay if left in a pipe for a long period of time. Therefore, it is necessary to prevent the stagnant water from flowing back to other branch pipes via the header. Furthermore, it is necessary to prevent the backflow of the sewage from the spout. In other words, it is necessary to sufficiently consider that the water supply system is formed with hygiene considerations and must not impair hygiene.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to provide a water supply point with a low frequency of use, to provide hygienic considerations, and to improve the usability. It is an object of the present invention to provide a water supply system capable of improving a water supply environment and creating a new water environment.

[0006]

According to a first aspect of the present invention, there is provided a water supply system in which a water supply pipe is connected to a header and a branch pipe is connected from the header to a water supply section. , A header opening / closing valve is provided between the header and the branch pipe, and the water supply section is provided with a water supply opening / closing valve including a flow rate adjusting means capable of adjusting an opening degree.

Accordingly, if the header open / close valve of the flow path not used for a long period of time is closed, water stagnated in the branch pipe does not flow back to another branch pipe. Furthermore, the backflow of the sewage from the water supply unit can be prevented. In other words, it is a water supply system with sanitary considerations. In addition to places that are usually used frequently, there are places where water can be obtained and an environment where water can be obtained such that electricity is obtained from an electrical outlet. To improve usability. On the other hand, the water supply on-off valve repeatedly opens and closes each time water is obtained. Further, the opening is adjusted each time to adjust the flow rate. Such frequent operation may damage the water supply on-off valve. However, since the water supply on-off valve is provided in the water supply part, inspection and repair can be easily performed.

According to a second aspect of the present invention, in a water supply system in which the present water supply pipe is connected to a header and a branch pipe is connected from the header to a water supply section, a flow rate adjusting means is provided between the header and the branch pipe. And a check valve is provided at the water discharge part of the water supply part.

Thus, if the header opening / closing valve of the flow path not used for a long period of time is closed, water stagnated in the branch pipe does not flow back to another branch pipe. Furthermore, the backflow of the sewage from the water supply unit can be prevented. In other words, it is a water supply system with consideration for hygiene, and a place where water can be obtained in addition to a place where water is used frequently, and an environment where water can be obtained so as to obtain electricity from an electric outlet. To improve usability. Further, since the flow rate can be adjusted by the header opening / closing valve, the water supply section can be made compact. Therefore, even when the space behind the wall is narrow, it becomes possible to embed the water supply portion in the wall and use it as a power supply outlet like an electric outlet, thereby improving not only usability but also designability. In particular, it is important that a part that is used less frequently is not obstructed and inconspicuous in daily life, but the present invention can solve this problem.

[0010] According to a third aspect of the present invention, the operation section of the header on-off valve is provided in a water supply section.

Thus, the header opening / closing valve can be closed on the water supply unit side in the water supply unit not used for a long time.
Also, if you want to use the water supply section with the header on-off valve closed, you can operate the header on-off valve at the water supply section you want to use, so you can operate it reliably without mistakenly opening and closing other header on-off valves. Yes, good usability.

According to a fourth aspect of the present invention, the operation portion of the header on-off valve is provided on the operation panel in a concentrated manner.

[0013] Thus, the water distribution to each water supply section can be centrally controlled, and the flow path to which water supply section is closed, and the flow path to which water supply section is open. You can see at a glance if it is in the state. Further, when the user is absent for a long period of time, each header open / close valve can be simultaneously closed by this operation panel. Further, if the header on-off valve is provided with a flow rate adjusting means, by adjusting the opening of the header on-off valve, the amount of water supplied to each water supply unit can be adjusted so that water is not supplied more than necessary. Water saving effect. Also, to supply water to the water supply department that wants to obtain sufficient water supply,
The header on-off valve can also be adjusted to suppress water supply to other water supply sections.

According to a fifth aspect of the present invention, a connection joint is provided in the branch pipe, and the connection joint and the joint of the water supply unit are fitted and connected.

[0015] This makes it possible to easily remove the water supply section without affecting the branch pipe after the completion of the pipe construction, so that inspection, repair, and replacement can be performed. That is, after the completion of the piping work, the branch pipes have a predetermined laying length, are fixed to the building vehicle, and connect the header and the water supply unit. Further, the pipe is covered with a wall, a floor, or the like. Therefore, it is impossible to move the water supply unit connected to the fixed branch pipe from the installation location so that the water supply unit can be easily inspected. However, in the present invention, since the water supply part and the connection joint provided in the branch pipe are fitted and connected, and the water supply part can be removed from the connection joint,
Inspection and repair of the water supply section can be performed without changing the branch piping.

According to a sixth aspect of the present invention, an air mixing section is provided between the header on-off valve and the branch pipe.

Thus, water can be drained by mixing air into the unused branch pipe, and the water in the pipe does not stay. Therefore, there is no danger that water will stagnate and decay.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. This water supply system 1 is shown in FIGS.
, A water distribution unit 3, a water distribution unit 4, and a water supply unit 5
And pipes 2 and 6 connecting them. First, each component will be described.

(Water distribution unit 3) The water distribution unit 3 is a water distribution function unit 3.
a is installed to control and manage at least the state of water supply, water pressure, water temperature, and the like from the main water supply pipe 2.

The water distribution function section 3a will be described below. The water supply pipe 2 has a filter 11 for removing foreign matter mixed in the water supply and a filter 1 such as a hollow fiber membrane for purification in order to control and manage the quality of supplied water.
1. Connect an activated carbon filter 11 for removing the odor of water, and an ion water generator using an electrolytic cell.

Next, the water supply pipe 2 is provided with a pressure reducing valve 12 or a water pressure pump for controlling and managing the water pressure.
If the working water pressure is higher than the specified maximum pressure,
A pressure reducing valve 12 is provided. If the working water pressure is less than the predetermined minimum pressure, a hydraulic pump is provided. Thus, the predetermined hydraulic pressure range (0.07MP to 0.4MPa)
By controlling and controlling the water supply pressure to MP (preferably, 0.2 MP to 0.3 MP), the load on equipment and piping provided on the downstream side can be reduced, and the product life can be extended.

Next, in order to control and manage the water temperature, a water heater 13 is installed in the hot water supply path of the main water supply pipe 2.

Further, on the upstream side of the main water supply pipe 2, a main on-off valve 1 is provided.
0 is provided. Although the main on-off valve 10 may have only the opening and closing function, it is preferable that the main on-off valve 10 includes the flow rate adjusting means 19. For example, the flow rate adjusting means 19
The flow rate can be adjusted by adjusting the opening degree of the on-off valve 10 using. Therefore, it is possible to obtain a water-saving effect by preventing unnecessary water from flowing.

It is preferable to provide a total flow detecting means 27 for detecting the amount of water supplied from the main water supply pipe 2. Thereby, in this water supply system 1, the total water supply amount from the main water supply pipe 2 can be grasped.

(Water Divider 4) Next, the water divider 4 will be described below. The water distribution section 4 is a place where water is supplied from the water distribution section 3 to each water supply section 5 using at least the header 7. That is, the main water supply pipe 2 branched from the water distribution section 3 is connected to the header 7, and the branch pipe 6 is connected from the header 7 to each water supply section 5. The header 7 is housed in a casing 14, and the header 7 is connected to the main water supply pipe 2 and the branch pipe 6 in the casing 14. For this reason, since each connection portion is accommodated in the casing 14, inspection and repair can be easily performed. Here, the header 7 used for water supply and hot water supply is described as an example, but the header 7 for water supply of hot water, medium water, purified water, ionic water, and the like at an appropriate temperature may also be used. Good.

Further, by mounting the water dividing function section 4a on the water dividing section 4, the usability of the water supply system 1 can be further improved. For example, as the water dividing function part 4a, a header opening / closing valve 8, a water pressure detecting means 26, a flow rate detecting means 27, a water temperature detecting means 28, an air mixing part 9 and the like can be provided between the header 7 and the branch pipe 6. .

First, the header opening / closing valve 8 of the water dividing function section 4a will be described. The header on-off valve 8 individually opens and closes the water supply passage of each branch pipe 6. For example, if the water in the branch pipe 6 remains stagnant without supplying water for a long time, the water may rot. for that reason,
The header on / off valve 8 of the branch pipe 6 connected to the water supply unit 5 that is not used for a long time is kept closed. By doing so, there is no possibility that the water that has been stagnated for a long period of time and decays flows into the other branch pipe 6 via the header 7.

Further, it is preferable to provide a flow rate adjusting means 19 for each header open / close valve 8. If necessary, by reducing the opening degree by the flow rate adjusting means 19, the amount of water supplied to the water supply unit 5 can be reduced so that water is not supplied more than necessary, and the water saving effect can be improved. In addition, in order to secure sufficient water supply for showers used in bathrooms, etc.
When the amount of water supplied to the other branch pipe 6 is reduced, the flow rate adjusting means 19 of the header opening / closing valve 8 provided in the other branch pipe 6 is used.
The degree of opening may be reduced by using

Next, the water pressure detecting means 26 will be described. Water pressure detecting means 2 between each branch pipe 6 and header 7
With the provision of 6, the water pressure applied to the branch pipe 6 can be detected. Therefore, by detecting the water pressure, an abnormality such as a pressure shortage in the branch pipe 6 or a pressure rise exceeding the allowable pressure can be initially detected. Further, by detecting a change in water pressure over time, it is also possible to predict the possibility of deterioration of the branch pipe 6 or occurrence of an abnormality in the branch pipe 6. For example, if the water pressure is equal to or higher than a predetermined water pressure, it indicates that a failure of the pressure reducing valve 12 and breakage of the branch pipe 6 may occur. This indicates that the flow rate is insufficient due to clogging and insufficient primary water pressure, or that water leakage or forgetting to close the valve of the water discharge section 18 is suggested. In addition, as the water pressure detecting means 26, a strain gauge may be provided in the resin pipes 2 and 6, and the water pressure may be detected from the strain in the branch pipes 2 and 6.

Next, the flow rate detecting means 27 will be described. Flow detecting means 2 between each branch pipe 6 and header 7
By providing 7, it is possible to grasp the water supply amount for each route. In the water supply system 1 in the header 7 construction method, the number of joints is small, so that there is almost no pressure loss in the pipeline. Therefore, the flow rate can be controlled by the water pressure.
Therefore, a flow rate sensor can be used as the flow rate detection means 27, but the flow rate may be detected using the water pressure detection means 26 having no pressure loss.

Next, the water temperature detecting means 28 will be described. Water temperature detecting means 2 between each branch pipe 6 and header 7
Provision of 8 makes it possible to detect the temperature of the supply water flowing through each branch pipe 6. Therefore, the opening ratio of the header-side valve 8 on the water supply side and the valve 8 on the hot-water supply side is adjusted so that the water temperature detecting means 28 and the header on-off valve 8 are linked so that a predetermined water temperature is obtained in the water supply section 5. It is also possible to do.

Next, the air mixing section 9 will be described. As shown in FIG. 9, the air mixing section 9 is provided with an air release valve 9a.
It is pressed against the upper part by the suppression force of b, and blocks the passage 9c. When mixing air, the air release valve 9a
To form a passage 9c, air can be sent from the passage 9c from an air compressor or the like, and mixed into the flow passage. Alternatively, the air release valve 9a may be opened by the air pressure fed thereto to form the passage 9c. Alternatively, the air release valve 9a may be an electromagnetic valve, and an air compressor may be connected to each aeration unit 9 and an aeration switch may be pressed to open the electromagnetic valve and further operate the compressor to feed air. You may. Further, the header opening / closing valve 8 and the operation of sending air to the air mixing section 9 may be linked. When the operation unit 24 of the header opening / closing valve 8 closes the valve, air may be sent in to drain the water. The above-described aeration unit 9 is formed, and the aeration unit 9 is formed.
, The water in the branch pipe 6 can be drained. Therefore, there is no danger that the water will stagnate in the flow path of the branch pipe 6 of the water supply unit 5 that will not be used for a long period of time and that the water will rot. In addition, it is also possible to mix air bubbles in the water supply using the air mixing section 9. However, while flowing through the branch pipe 6, the bubbles grow and become large,
It is necessary to break down the bubbles grown in the water supply unit 5 to make them fine. Therefore, a fine mesh filter is interposed in the flow path. Further, the air compressor for mixing the air may also be used as the air compressor used for the bubble bath. Therefore, it is preferable to provide the water diversion unit 4 (header 7) and the air compressor behind the ceiling of the bathroom unit. With this arrangement, inspection and repair of the water diversion unit 4 can be performed from the inspection opening of the bathroom unit.

(Water Supply Unit 5) Next, the water supply unit 5 will be described with reference to FIGS. The water supply unit 5 is a place where at least a user obtains water supply for using water.
Note that a water supply pipe 29 may be connected to the water supply unit 5 to supply water.

FIG. 4 shows a water supply section 5 of one embodiment.
The casing 14c of the water supply unit 5 is embedded in a wall, and the branch pipe 6 from the water distribution unit 4 (header 7) is taken into the casing 14c. The connection joint 15 is located in the casing 14c. Further, FIG.
The faucet body 16 is connected so as to be fitted to the connection joint 15 as shown in FIG. And quick fastener 34
Is attached, the fitting joint 15 and the fitting part 17 of the faucet main body 16 are restrained in the detaching direction so as not to come off. Further, the spouting section 18 of the faucet body 16
Are provided so as to protrude from the cover 30. Further, the water leakage tray 31 is provided below the branch pipe 6 and the connection joint 15 so as to prevent water leakage from the connection joint 15 from flowing out of the sheath pipe 32 by any chance. As shown in FIG. 4, a slope is provided on the inner bottom surface of the casing 14c toward the direction in which the cover 30 is mounted, and the slope is provided so as to be concentrated at the center. When this occurs, the air flows out from a hole (not shown) provided at the lower end of the cover 30 to the indoor side along this inclination. Therefore, the user can easily confirm from the room side that the water leakage has occurred in the casing. As described above, since the connection joint 15 and the joint portion 17 of the faucet body 16 which is the water supply portion 5 are connected in the casing 14c, it is easy to check for water leakage from this connection and to make the branch pipe made of resin. 6 can be easily updated.
Further, since the faucet main body 16 serving as the water supply section 5 is made removable, inspection and repair of the faucet main body 16 can be easily performed.

Next, the structure of the check valve 21 of the water discharging section 18 will be described. As shown in FIG. 5, the water discharge unit 18 is provided with a check valve 21 so that the sewage does not flow backward from the water discharge unit 18. The check valve 21 includes a valve 21a having a spring 21b.
And is configured to block the flow path 21c and prevent backflow. Further, when a water flow state is established, the elastic force of the spring 21b is depressed by the flowing water pressure, and the valve 21a is opened to form a flow path 21c. Further, the check valve 21 is provided with a buffer portion 22 so as to absorb the impact of the water hammer by the elastic force of the spring 22a.

Next, the structure of the water stop valve 23 of the water discharge section 18 will be described. As shown in FIG. 5, the water discharge section 18 forms a flow path 23 b by connecting a water supply pipe 29 to the water discharge section 18, and closes the flow path 23 b by the elastic force of a spring 23 a when the water supply pipe 29 is removed. Water stop valve 23 to return to the original position
Is provided. The water stop valve 23 shown in FIG. 5 is provided with the water stop valve 23 protruding from the water discharge part 18, and by connecting a water supply pipe 29 to the water discharge part 18, the water stop valve 23 is pushed in, and 23b is formed to be in a water-permeable state. Also, by removing the water pipe 29, the water stop valve 23 returns to the original position by the elastic force of the spring 23a, and closes the flow path 23b to be in the water stop state.

Next, the flow rate adjusting means 19 will be described. As shown in FIG. 4, the faucet main body 16 is provided with a flow rate adjusting means 19, and a flow rate adjusting operation section 19a for operating the flow rate adjusting means 19 is constituted by a lever handle 19a. The handle 19a is provided so as to protrude from the cover 30. By rotating the lever handle 19a connected to the water discharge flow rate adjusting means 19, the ball valve opens to form a flow path.

In FIG. 8, the flow rate adjusting means 19 is a switch button type, and an operation section 19a is provided on a cover 30, and the opening is adjusted by electric control. The flow rate is adjusted by the triangular operation part 19a, and the water is stopped by the square operation part 19a.

Further, the faucet body 16 is provided with the flow rate adjusting means 1.
9, the header opening / closing valve 8 is provided with a flow rate adjusting means 19, and the operation unit 24 is provided with the cover 30
May be provided in the same manner as the operation unit 19a provided in the header opening / closing valve 8 to adjust the opening degree of the flow rate adjusting means 19 of the header opening / closing valve 8 to adjust the water discharge flow rate. In this case,
Since the operation unit 24 shown in FIG. 8 is operated by the operation unit 19a, the operation unit 19a in the figure becomes the operation unit 24, and the operation unit 24 in the figure becomes unnecessary. Further, in this case, at least the check valve 21 is provided in the water discharging section 18,
It is important to prevent backflow from the spouting section 18 and take hygiene considerations. Further, by providing the water stop valve 23, usability can be improved.

Next, the header opening / closing valve 8 provided in the water diversion section 4
The operation of is described. As shown in FIGS. 4, 5 and 8, the cover 30 is provided with an operation unit 24 for opening and closing the header on-off valve 8. Thus, the opening / closing operation of the header opening / closing valve 8 provided on the header 7 can be performed in each water supply unit 5. Further, the operation unit 9 d for mixing air into the aeration unit 9 may be provided on the cover 30 in the same manner as the operation unit 24.

On the other hand, as shown in FIG. 3, an operation panel 25 is provided separately from the cover 30 without the operation section 24, and the operation section 24 for opening and closing each header on-off valve 8 is concentrated on the operation panel 25. May be provided. In this case, centralized management can be performed, and usability can be improved. Also, the operation panel 9d for mixing air into the above-described aeration section 9 is connected to the operation panel 2.
5 may be provided.

FIG. 6 shows another embodiment of the water supply section 5.
The description of the same components as the water supply unit 5 described above is omitted. The water supply unit 5 also has a water stop valve 23 that functions to close the flow path 23b by forming a flow path 23b by connecting the water supply pipe 29 to the water discharge unit 18 and removing the water supply pipe 29. However, as shown in FIG. 7, the connection structure of the water discharging section 18 is a female type. That is, the water stop valve 23 is provided inside the water discharge unit 18,
By inserting and connecting a water supply pipe 29 to this, the water stop valve 23 is pushed in to form a flow path 23b, and a water flow state is established. Here, since two water discharge units 18 are provided, for example, this water supply unit 5 is installed in a bathroom and one of the water discharge units 1 is provided.
8 is connected to a water pipe 29 for a washing area,
8 can be connected to a water pipe 29 for a bathtub. In addition, this water supply section 5 is installed in the toilet, and one of the water discharge sections 18 is provided.
Is connected to a water pipe 29 for washing a toilet, and the other water discharge section 18 can be easily connected to a water pipe 29 for a local washing and drying device. In addition, the water supply unit 5 is installed in the kitchen, and a water supply pipe 29 for a faucet of a kitchen sink is connected to one of the water discharge sections 18, and a water supply pipe 29 for a dishwasher is connected to the other water discharge section 18. Can be easily connected.

The water supply section 5 provided with the above-mentioned water stop valve 23
By providing the pressure reducing valve 12 in the water distribution unit 3 and setting the water pressure to 0.4MP or less, preferably 0.3MP or less, the water pipe 29 can be easily attached and detached by human power. Therefore, it becomes possible to use the water supply unit 5 as a water supply outlet for obtaining water with the same feeling as connecting a cord to an electric outlet for obtaining electricity.

Here, the water supply section 5 in which the casing 14c is embedded in the wall has been described as an example, but the casing 14c may be embedded in the floor. As described above, even when the piping from the floor is started up, the casing 1
Since the connection between the branch pipe 6 and the connection joint 15 is housed in the inside of the branch pipe 4c, inspection and repair become easy, and the branch pipe 6
Can be easily updated.

(Piping) The main water supply pipe 2 connecting the water distribution section 3 and the water distribution section 4 and the branch pipe 6 connecting the water distribution section 4 and the water supply section 5 are constituted by flexible pipes. ing. Examples of the flexible piping include synthetic resin piping such as cross-linked polyethylene and polybutene. In addition, it is preferable that the sheath pipe 32 is laid in consideration of the renewability of the pipes 2 and 6, and the pipes 2 and 6 are inserted into the sheath pipe 32.

(Water Supply System 1) Next, an embodiment in which the water supply system 1 is installed will be described. First, common specifications in the water supply system 1 shown in FIGS. 1 to 3 will be described below. The main water supply pipe 2 is inserted into the casing 14a of the water distribution unit 3, the main open / close valve 10, the flow rate detecting means 27, the filter 11, and the pressure reducing valve 12 are connected in this order, and the main water supply pipe 2 for water supply and the main water supply for hot water supply. It branches into a pipe 2 and is connected to a water diversion section 4. The water dividing section 4 is provided with a water supply header 7a and a hot water supply header 7b. Further, a branch pipe 6 is connected to a connection part of each header 7 provided in the water separation part 4 via a header opening / closing valve 8, an air mixing part 9, a water pressure detection means 26, a flow rate detection means 27, and a water temperature detection means 28. ing. The branch pipe 6 is laid to each water supply unit 5 and connected to each water supply unit 5.

Next, different specifications in each of FIGS. 1 to 3 will be described.

In the water supply system 1 shown in FIG. 1, an operation portion 24 of the header opening / closing valve 8 provided between the header 7 and the branch pipe 6 and an operation portion 9d for aerating the air into the aeration portion 9 are provided by a water supply portion. 5. Further, the faucet body 16 of the water supply unit 5 is provided with a flow rate adjusting means 19, and the flow rate adjusting means 19 adjusts the flow rate. Although the backflow can be prevented by the flow rate adjusting means 19, the backflow at the tip of the water discharge unit 18 can be further prevented by providing the check valve 21 or the rectifying plate in the water discharge unit 18. . Further, it is preferable that the check valve 21 be provided with a check valve 20 with a buffer function for absorbing the impact of a water hammer. Furthermore, by providing the water stop valve 23 in the water discharge part 18, usability can be improved.

In the water supply system 1 shown in FIG. 2, a header opening / closing valve 8 provided with a flow rate adjusting means 19 is provided between the header 7 and the branch pipe 6, and an operation section 24 of the header opening / closing valve 8 is connected to the water supply section 5. Provided. The water discharge section 18 of the water supply section 5 is provided with a check valve 21.
1 prevents the backflow from the water discharger 18. Further, it is preferable that the check valve 21 be provided with a check valve 20 with a buffer function for absorbing the impact of a water hammer. Furthermore, by providing the water stop valve 23 in the water discharge section 18,
Usability can be improved. As shown in FIG. 1, an operation unit 9d for mixing air into the air mixing unit 9.
May be provided in the water supply unit 5.

In the water supply system 1 shown in FIG. 3, the operation section 24 of the header opening / closing valve 8 provided between the header 7 and the branch pipe 6 is centrally provided on the operation panel 25. Further, a main operation section 33 of these operation sections 24 is provided, and all the header opening / closing valves 8 can be opened and closed by turning on and off the main operation section 33. Further, an operation unit 9d for mixing air into the aeration unit 9 can be provided on the operation panel 25. The other specifications are the same as those in FIG.

The above-mentioned water supply system 1 is a water supply system 1 which can provide a water supply point (water supply section 5) which is used less frequently. This water supply system 1 is a kitchen, a toilet, a washroom, a bathroom and the like. May be used only at the normally used water supply point (water supply section 5).

According to the present invention, by closing the header opening / closing valve 8 of the flow path which is not used for a long period of time, water stagnated in the branch pipe 6 does not flow back to another branch pipe 6. Further, backflow of the sewage from the water supply unit 5 can also be prevented. In other words, the water supply system 1 is provided with sanitary considerations, and in addition to a place (water supply section 5) that is usually used frequently, a place (water supply section 5) where water can be obtained is provided, and electricity is supplied from an electric outlet. As a result, an environment in which water can be obtained is provided, and usability can be improved.

[Brief description of the drawings]

FIG. 1 shows a water supply system according to an embodiment of the present invention.

FIG. 2 shows a water supply system according to another embodiment of the present invention.

FIG. 3 shows a water supply system according to another embodiment of the present invention.

FIG. 4 shows an embodiment of a water supply section.

FIG. 5 shows a water discharge section of the water supply section in FIG.

FIG. 6 shows another embodiment of the water supply section.

FIG. 7 shows a water discharge section of the water supply section in FIG.

FIG. 8 shows another embodiment of the water supply section.

FIG. 9 shows one embodiment of an aeration unit.

FIG. 10 shows a connection structure between a connection joint and a joint portion of the faucet main body.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 water supply system 2 water supply pipes 3 water distribution section 3a water distribution function section 4 water distribution section 4a water distribution function section 5 water supply section 6 branch pipe 7 header 7a water supply header 7b hot water header 8 header open / close valve 8a equipped with flow rate adjusting means Header opening / closing valve 9 Air mixing section 9a Valve 9b Spring 9c Passage 9d Operating section for air mixing 10 Main opening / closing valve 11 Filter 12 Pressure reducing valve 13 Water heater 14 Casing 15 Connection joint 16 Water faucet body 17 Joint section of faucet body 18 Water discharge section 19 Flow rate adjusting means 19a Operating section of flow rate adjusting means provided in faucet main body 20 Check valve with buffer function 21 Check valve 21a Valve 21b Spring 21c Flow path 22 Buffer section 22a Spring 23 Water stop valve 23a Spring 23b Flow Road 24 Header open / close valve operating section 25 Operation panel 26 Water pressure detecting means 27 Flow rate detecting means, total flow rate detecting means 28 Water temperature detecting means 29 Water pipe 30 Cover 31 Water leakage tray 32 Sheath pipe 33 Main operation part 34 Quick fastener

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) F17D 1/08 F17D 1/08 F term (reference) 2D060 AB03 AC03 BC11 BC19 BC21 3J071 AA12 BB11 BB14 CC01 CC12 DD36 FF12

Claims (6)

[Claims] 1. A water supply system in which a main water supply pipe is connected to a header and a branch pipe is connected from the header to a water supply part, wherein a header opening / closing valve is provided between the header and the branch pipe. A water supply system, wherein the water supply unit is provided with a water supply opening / closing valve provided with a flow rate adjusting means capable of adjusting an opening degree. 2. A water supply system in which a main water supply pipe is connected to a header and a branch pipe is connected from the header to a water supply section. A header opening / closing valve having a flow rate adjusting means between the header and the branch pipe. A water supply system, wherein a check valve is provided in a water discharge part of the water supply part. 3. The water supply system according to claim 1, wherein an operation section of the header opening / closing valve is provided in a water supply section. 4. The water supply system according to claim 1, wherein the operation section of the header opening / closing valve is provided centrally on an operation panel. 5. The water supply system according to claim 1, wherein a connection joint is provided in the branch pipe, and the connection joint is fitted and connected to a joint of a water supply unit. 6. The water supply system according to claim 1, wherein an air mixing section is provided between the header opening / closing valve and the branch pipe.