JP4638066B2 - Water supply piping structure in the building - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water supply piping structure in a building, and more particularly to a water supply piping structure in a building that sends water to a plurality of water supply ports installed in each room or each door in an apartment house, a hotel, a dormitory, or the like.
[0002]
[Prior art]
For example, in a housing complex or the like, a bathroom, a washroom, a kitchen, or the like is installed in each house, and a water supply port including a so-called water supply faucet and a water heater is installed in each of them. As for water supply to the water supply port in each house in such an apartment house, generally, gravity water supply by an elevated water tank or pressurized water supply by a pump is known.
[0003]
Gravity water supply from an elevated water tank draws water stored in a water receiving tank from a water supply source (such as a water pipe buried underground) into a water tank installed on the rooftop of the building, and uses the water in this water tank. In this method, water is supplied to each water supply port by gravity drop while always maintaining a constant water level. In addition, for pressurized water supply by pumps, a water receiving tank is provided between the water supply source and each water supply port, and in the same way as gravity water supply by an elevated water tank, the water in the water receiving tank is always kept at a constant water level by each pump. This is a method of supplying pressurized water.
[0004]
More specifically, the water supply piping structure for pressurized water supply in an apartment house or the like has a plurality of water supply pipes 2, 3, 4, 5 in the building 1 as shown in FIG. Pipes are provided toward the upper floor, and water supply ports 6 installed in the respective doors of the respective floors are connected to the respective water supply pipes 2 to 5 by branch pipes 7.
[0005]
Each one end of each water supply pipe 2-5 and the other end i.e. terminal is lower stream side is connected to the water supply main pipe 9 is essentially being a terminal end. The water supply main pipe 9 is connected to the discharge port of the pump 8 whose inlet end is connected to the water receiving tank 10. The water receiving tank 10 is connected to a water supply source 11, and automatic water supply control is performed so as to always keep the water in the water receiving tank 10 at a constant water level. As a result, the water pressurized by the pump 8 is supplied from the water supply main pipe 9 via the water supply pipes 2 to 5 and the branch pipes 7 and flows out from the water supply opening 6 that has been opened.
[0006]
Piping structure in such a supply pressure water, when gravity feed water be included, tapering toward the lower stream side when either the diameter of the pipe to the water supply port 6 has a water inlet 6 and a lower stream It is configured as follows. For example, in the example shown in FIG. 3, the pipe diameter toward the lower stream side water supply main pipe 9 connected to the discharge opening from the upper stream side of the pump 8 has changed 125A, 100A, 80A, and 65A. In the case of gravity water supply, such a change in the pipe diameter is on the upstream side, and is opposite to the example of pressurized water supply shown in FIG.
[0007]
In FIG. 3, the diameter of the pipe part indicated by reference numeral 9a is, for example, 125A, the diameter of the pipe part indicated by reference numeral 9b is, for example, 100A, the diameter of the pipe part indicated by reference numeral 9c is, for example, 80A, and the reference numeral 9d. The diameter of the tube part shown is for example 65A. Furthermore, the pipe diameter of the portion indicated by the water supply pipe 2 to 5, for example, 65A toward the lower stream side from each on the downstream side, 25A, is changed 20A.
[0008]
That is, the diameter of the pipe part indicated by reference numerals 2a, 3a, 4a, 5a is, for example, 65A, and the diameter of the pipe part indicated by reference numerals 2b, 3b, 4b, 5b is, for example, 25A, reference numerals 2c, 3c, 4c, The diameter of the tube portion indicated by 5c is, for example, 20A. However, the pipe diameter described above is calculated and determined by the number of water supply ports on the downstream side, and is merely an example for explaining the change in the pipe diameter.
[0009]
Thus, in the piping structure for a conventional gravity feed water and supply pressure water, pipe diameter toward the lower stream side from the upper stream side is configured gradually so that the small diameter. Moreover, although not shown in figure, about the water supply pressure control about each water supply port 3, it is performing by installing a pressure reducing valve in each chamber or each door.
[0010]
[Problems to be solved by the invention]
The conventional gravity water supply and pressurized water supply as described above have a problem that it is difficult to secure a stable water supply amount to each water supply port when, for example, people living in an apartment house open the water supply port at the same time. It was.
[0011]
Specifically, for example, when the water supply ports belonging to the same water supply piping system are opened, there is a problem that the water pressure at each water supply port is remarkably lowered, and the water supply amount per unit time is changed. . In addition, in conventional gravity water supply and pressurized water supply, the water supply piping is tapered toward the downstream side, so the types (sizes, etc.) of pipe fittings and the like are increased, and labor and arrangements during construction and maintenance are extremely difficult. There was a problem that it was troublesome.
[0012]
An object of the present invention is to solve such a conventional problem, and in a water supply piping structure in a building where a large number of water supply ports are installed, a stable water supply amount is secured from each water supply port and pressure is controlled. An object is to provide a water supply piping structure in a building that can be controlled inexpensively and that is easy to construct and maintain the piping.
[0013]
[Means for Solving the Problems]
The present invention is a water supply piping structure in a building, and is configured as follows in order to solve the technical problems described above. That is, the present invention includes a water supply main pipe in which the respective the installed loop for a plurality of zones in a building, the number of water inlet in a loop water supply main pipe are connected, the loop water supply main tube, a water supply source water main pipe Rutotomoni connected to a water supply pipe which communicates, the loop was to passes through a water supply pipe section through one floor of each chamber or each house building, each chamber or each house of another floor with the floor By including another water supply pipe section and a plurality of pipes that are connected orthogonally to these pair of water supply pipe sections and that pass through each room or door on different floors and to which the water supply ports are connected, a plurality of loop shapes water piping structure of a building, characterized in Rukoto includes a water supply pipe section.
[0014]
<Specific Configuration in the Present Invention>
Although the water supply piping structure in the building which concerns on this invention consists of the essential component mentioned above, even if the component is the following cases concretely, it is materialized. The specific component is that the inside of the building is divided into several zones, the loop water supply main pipes are installed in the building for the number of zones, and each loop water supply main pipe is connected to the water supply pipe. It is characterized by.
[0015]
Moreover, in the water supply piping structure in the building according to the present invention, when pressurized water is supplied to the loop-shaped water supply main pipe of each zone via the water supply pipe, the connection portion between the loop-shaped water supply main pipe and the water supply pipe of each zone, It is preferable to provide a pressure reducing valve except for the connection portion between the loop-shaped water supply main pipe and the water supply pipe located on the most downstream side with respect to the water supply pipe. Moreover, in the water supply piping structure in the building which concerns on this invention, it is preferable to form all a water supply pipe and a loop-shaped water supply main pipe with a stainless steel material. Stainless steel pipes can increase the flow velocity in the pipe compared to steel pipes due to their mechanical properties when they have the same diameter, so the pipe diameter of the pipes used can be reduced and the degree of freedom in pipe design can be increased. Can do.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the embodiment of the water supply piping structure in a building according to the present invention will be described in more detail. FIG. 1 schematically shows a water supply piping structure 20 in a building according to an embodiment of the present invention.
[0017]
The water supply piping structure 20 in the building according to this embodiment is a building 21 such as an apartment house where a large number of water supply ports 22 are installed in each room or door. .., And the building 21 is provided with a number of loop water supply main pipes 23A, 23B, 23C,... Having a pipe diameter of 40A, for example, corresponding to the number of zones. These loop-shaped water supply main pipes 23A, 23B, 23C... Are made of a stainless material.
[0018]
Here, the "loop", the water supply main pipe 23A, 23B, 23C, water flowing ...... They become endless as nearing to the water supply port 22 from the vertical and horizontal directions refers to the so-called recyclable state . In the water supply piping structure 20 of the building according to the embodiment shown in FIG. 1, the water supply main pipe 23A, 23B, 23C, installation ...... but as each partial cover by two levels from the floor below in the order of the building 21 Has been. Further, each of the water supply main pipes 23A, 23B, 23C,... Is substantially configured to include three loop-shaped water supply pipe sections.
[0019]
This point will be described in more detail with reference to FIG. 2 showing, for example, a loop-shaped water supply main pipe 23B piped in the B zone. The loop-type water supply main pipe 23B is connected to each room or door on one floor of this building. A plurality of short-circuits passing through each room or door on different floors so as to short-circuit between the horizontal water supply pipe part 23B-1 passing through and the horizontal water supply pipe part 23B-2 connecting each room or door on another floor The vertical pipes 23B-3, 23B-4, 23B-5, and 23B-6 are connected, whereby the water supply main pipe 23B is substantially configured to include three loop-shaped water supply pipe portions.
[0020]
A stainless steel water supply pipe 24 is connected to each of the loop water supply main pipes 23A, 23B, and 23C. In other words, the loop-shaped water supply main pipes 23A, 23B, and 23C are connected in parallel to the stainless steel water supply pipe 24. At this time, in the water supply piping structure 20 in the building according to this embodiment, the water supply main pipe 23A of the zone A covering the lowermost two floors and the water supply main pipe 23B of the zone B covering the upper two floors Is connected to the water supply pipe 24 via a pressure reducing valve 25.
[0021]
The reason for installing the pressure reducing valve 25 when connecting the water supply main pipes 23A and 23B in the zone A and the zone B to the water supply pipe 24 in this way is to ensure the pressure at the end faucet in the case of the pressurized water supply system. This is because the water faucet pressure in the piping passage becomes too high because the pump pressure is set to the above. For example, the faucet pressure is higher at the lower left water supply port 22 even at the upper right water supply port 22 in FIG. 1 and the water supply port 22 in the same zone.
[0022]
That is, taking the case of this embodiment as an example, when the pressure of the water supply main pipe 23C in the zone C is set to 2.0 to 4.5 Kg / cm ² , for example, the zones A and B are 4.5 Kg / cm 2 depending on the head. ² or more pressure. If such a high pressure is maintained, water hammer may be generated. Therefore, it is necessary to adjust the pressure of the water supply main pipes 23A and 23B in the zones A and B close to the pump by interposing the pressure reducing valve 25 at the connection portion with the water supply pipe 24.
[0023]
Each water supply port 22 installed in each door belonging to each zone A, B, C,... Is branched into a plurality of short-circuited vertical pipes constituting the loop water supply main pipes 23A, 23B, 23C,. Connected through. These short-circuited vertical pipes have different pipe diameters depending on the number of water supply ports 22 attached to the short-circuited vertical pipe via the branch pipe 26. However, the two horizontal water supply pipe portions constituting the loop-shaped water supply main pipe The tube diameter is constant.
[0024]
The diameter of the water supply pipe 24 is also constant, for example 80A, and its upstream end is connected to the discharge port of the pump 27. As shown in FIG. 1, the pump 27 communicates with a water supply tank (water receiving tank) 28 through a piping system, and the water supply tank 28 is connected to an appropriate water supply source 29 through a pipe.
[0025]
Next, the effect | action about the water supply piping structure 20 in the building comprised as mentioned above is demonstrated. In each room or each door of the building 21, for example, it is assumed that one water supply port 22 connected to the loop-shaped water supply main pipe 23A in the zone A via the branch pipe 26 is opened. Then, water is supplied from the up / down / left / right direction in the loop-shaped water supply main pipe 23 </ b> A toward the opened water supply port 22.
[0026]
When the water supply port 22 in any room in the building 21 (door) is unplugging, loop water supply main pipe 23A for this water supply port 22, 23B, 23C ...... be water from the vertical and horizontal directions Therefore, even if several water supply ports connected to the same loop water supply main pipe are opened, the water supply amount at each open water supply port is very stable, and in the case of the conventional water supply piping structure It does n’t happen that the water gets worse like
[0027]
Moreover, in the water supply piping structure 20 in the building which concerns on this embodiment, since it is set as the pressurized water supply system which pressurizes with the pump 27 and supplies water to the loop-shaped water supply main pipes 23A, 23B, 23C ... of each zone, it is predetermined. For the zone, the pressure reducing valve 25 is installed at the connection part between the loop-shaped water supply main pipes 23A, 23B, 23C... And the water supply pipe 24 to perform the water supply pressure control. It becomes.
[0028]
Here, the predetermined zone in which the pressure reducing valve 25 is installed means other zones excluding the zone located on the most downstream side in the water supply pipe 24 as apparent from FIG. The pressure reducing valve 25 is not provided only at the connection portion between the loop-shaped water supply main pipe and the water supply pipe 24 belonging to the located zone.
[0029]
Furthermore, in this water supply piping structure 20, since the loop-shaped water supply main pipes 23A, 23B, 23C,... Are formed of a stainless steel material, compared to the conventional steel pipe having the same diameter, the pipes are formed in the pipe. The flow rate can be set fast. As a result, the water supply main pipe and the water supply pipe to be used can be made smaller in diameter than the conventional one, coupled with the fact that the water supply main pipe is formed in a loop shape. In this way, since a narrower pipe can be used for the water supply main pipe and the water supply main pipe than the conventional one, the degree of freedom in piping design is improved, and accordingly, construction is easy and inexpensive, and maintenance is also easy. Various effects can be obtained.
[0030]
The water supply piping structure 20 in the building which is one embodiment of the present invention shown in FIG. 1 is shown as a model so that the features of the present invention can be easily understood. As an example of actual design, In an 18-story student dormitory, one zone can be divided into six levels, the whole is divided into three zones, and a loop water supply main pipe is installed in each zone.
[0031]
【The invention's effect】
As described above, according to the water supply piping structure in a building according to the present invention, in the water supply piping structure in a building where a large number of water supply ports are installed, a stable water supply amount is secured from each water supply port and the pressure is controlled. In addition, it is possible to provide a water supply piping structure in a building that can be made inexpensively and that allows easy piping construction and maintenance.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram schematically showing a water supply piping structure in a building according to an embodiment of the present invention.
FIG. 2 is a partially enlarged configuration explanatory view showing the piping configuration in more detail, taking a looped water supply main pipe, for example, piped in the B zone as an example in the water supply piping structure shown in FIG. 1;
FIG. 3 is a configuration explanatory view schematically showing a water supply piping structure in a building by a conventional pressurized water supply method.
[Explanation of symbols]
20 Water supply piping structure in a building 21 Building 22 Water supply port 23A, 23B, 23C of each room or door Loop water supply main pipe 24 Water supply pipe 25 Pressure reducing valve 26 Branch pipe 27 Pump A, B, C Zone

Claims (4)

Wherein the water supply main pipe in which the respective the installed loop for a plurality of zones in a building,
The number of water inlet in a loop water supply main pipe are connected, the loop water supply main tube, Rutotomoni connected to the water supply pipe communicating with a water supply source, the water supply main pipe in which the said loop is
A water supply pipe section that passes through each room or door on one floor of the building;
A separate water pipe that passes through each room or door on a different floor from the floor,
Is connected orthogonally to the pair of the water supply pipe section, by including a plurality of and said water inlet passing through each chamber or each household in different floors are connected tube, Rukoto comprises a plurality of loop-shaped water supply pipe portion A water supply piping structure in a building characterized by   The inside of the building is divided into several zones, and the building is provided with the number of loop water supply main pipes equal to the number of the zones, and each of the loop water supply main pipes is connected to the water supply pipe. The water supply piping structure in a building according to claim 1.   When pressurized water is supplied to the loop-shaped water supply main pipe of each zone through the water supply pipe, the most downstream side of the water supply pipe is connected to the loop-shaped water supply main pipe and the water supply pipe of each zone. 3. The water supply piping structure in a building according to claim 2, wherein a pressure reducing valve is provided except for a connection portion between the loop-shaped water supply main pipe and the water supply pipe located on the side. Water supply pipe structure in a building according to any one of claims 1 to 3, characterized in that said water supply pipe and the loop water supply main pipe are made of stainless material.

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