JP4772227B2 - Water supply piping system for cold housing - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a header for drainage piping used in a header construction method using a flexible pipe, in which the header portion is arranged at a position lower than the soil concrete level, and draining is performed by piping having no slope, and The present invention relates to a water supply piping system for houses in cold regions.
[0002]
[Prior art]
Conventionally, a water supply pipe device employing a header construction method has been proposed in a house. In the header construction method, the water supply and hot water supply main pipes are connected to the headers respectively, and the branch pipes branched from the headers in the form of octopus legs are connected one-to-one to the faucets of each watering facility. The piping by such header method has connection points compared to the piping by the pre-branch method that connects the branch pipes branched sequentially from the water and hot water main pipes through the joints to the faucets of each watering facility. It is possible to reduce the amount of water leakage due to poor construction, and there is an advantage that stable water supply and hot water supply are possible because there is little change in the flow rate when using each watering facility at the same time.
[0003]
When the branch pipe is piped by the header construction method, it is necessary to be able to drain water in the branch pipe drawn indoors in order to prevent freezing in a cold region. As this method, there is a piping method in which the header portion is disposed at a position lower than the soil concrete level and does not have a gradient.
[0004]
[Problems to be solved by the invention]
However, when draining with the above header method, if intake air is taken by opening the faucet, air will flow backward to the other branch pipe when one faucet is drained, and the faucets are opened sequentially. However, there was a problem that water could not be drained. The present invention has been made in view of the above problems, and a drain pipe header capable of draining water without backflowing air to the branch pipe even when each faucet is opened, and It aims at providing the water supply piping system for cold district houses using it.
[0005]
[Means for Solving the Problems]
The invention of claim 1, wherein the header body, and in the connected piping headers consisting of the branch pipe to the header body, 5-30 mesh screen or to be perpendicular to the longitudinal direction of the branch pipe inside the tube A pipe header that can be drained to prevent freezing, where a plate with holes of 1 to 7 mm is placed, is placed at a position lower than the upper surface of the soil-concrete concrete with the branch pipe side facing up. A residual water discharge mechanism that drains at a position below the same level as the header placement position by placing the branch pipe connected to the header around the soil concrete and connecting it to the corresponding water supply equipment. Is a water supply piping system for cold district houses connected to the header .
[0006]
If the mesh screen is less than 5 mesh, the backflow of air cannot be prevented, and if it exceeds 30 mesh, the backflow of air can be prevented, but it becomes resistance to water flow and traps dust in the pipe. Clogging is likely to occur, and water cannot pass through long-term use.
[0007]
As a line constituting the screen, a material which does not generate rust by contact with tap water is preferred for hygiene, and examples thereof include 18-8 stainless steel (SUS 304). The wire diameter is preferably 1 mm or less, more preferably 0.5 mm or less.
[0008]
In the plate having the holes of 1 to 7 mm, if the holes are less than 1 mm, the water flow is resisted and clogging occurs because the dust in the pipe is captured. If the holes exceed 7 mm, the backflow of air cannot be prevented. In order to reduce pressure loss, it is preferable to make as many holes as possible on the plate to be installed, and holes of a plurality of sizes may be mixed.
[0009]
It is preferable to make the plate thickness as thin as possible withstand the hydrodynamic pressure. Examples of the shape of the hole include a circle, a diamond, a square, a rectangle, and a triangle.
[0012]
The position where the screen or plate is disposed is preferably disposed so as to be perpendicular to the longitudinal direction of the tube in the branch tube of the dropping portion. Further, the dropping pipe of the dropping section where the screen or plate is installed is preferably installed in the range of 60 degrees to 120 degrees with the horizontal level being 0 degrees, and more preferably vertical (90 degrees). If tilted from the vertical, a rough mesh screen or a plate with a large diameter hole may not prevent backflow of air.
[0013]
According to the first aspect of the present invention, the pipe header is disposed at a position lower than the upper surface of the soil concrete of the house with the branch pipe side facing upward, and the branch pipe connected to the header is placed on the soil concrete. and speculating as creeping launch the connected to the corresponding plumbing equipment, before Symbol residual water discharge mechanism for draining the header position and the same level or lower position, before Symbol water supply pipe for cold region housing connected to the header System.
[0014]
As for the connection method of the branch pipe, since the header is installed at a position lower than the soil concrete level, the branch port of the header body is dropped and extended by using a member made of gunmetal, etc., and the joint part is taken out onto the soil concrete. There are a method of connecting, a method of bending the pipe to the header main body position, and the like, but in any case, it is necessary to perform construction by a method satisfying the above conditions.
[0015]
(Work)
By placing a 5-30 mesh screen or a plate with 1-7 mm holes inside the header branch or the part where the branch is extended, the surface tension of the water at the screen or plate section It cannot be replaced, water in the piping after the screen or plate is retained, and air cannot flow backward. As a result, even if water is drained for each faucet, even if air enters the header body, air will not flow back to the pipes connected to other faucets, and each faucet should be drained reliably. Is possible.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Example 1
The piping image using the water supply piping system for cold district houses of this invention was shown in FIG. On each branch connection side of the header body (RHD20-3; manufactured by Sekisui Chemical Co., Ltd.), both screw water supply pipes 13 × 30 (S4AK; manufactured by Miyako), gunmetal union (M153MN; manufactured by Miyako), both screw water supply pipes 13 × 30, gunmetal elbow 13 (M148MN; manufactured by Miyako), ESLOQUICK MJ joint male screw adapter 13A (manufactured by Sekisui Chemical Co., Ltd.), cross-linked polyethylene pipe 13A (trade name “ESROPEX 13A”; manufactured by Sekisui Chemical Co., Ltd.) 5 m, male screw The adapter 13A (trade name “ESROQUICK MJ Fitting”; manufactured by Sekisui Chemical Co., Ltd.) and ball valve 1/2 (MT400; manufactured by Miyako) are connected in this order, and the crosslinked polyethylene pipe is a saddle band 13A (manufactured by Akagi). It was fixed so that there was no floating. In addition, the primary side is connected to an LX insulated female male socket 20A (manufactured by Sekisui Chemical Co., Ltd.), a hard vinyl chloride lined steel pipe 20A (manufactured by Sekisui Chemical Co., Ltd.), and a water drain plug (MT-A; manufactured by Takemura Seisakusho Co., Ltd.). CSL-100; manufactured by Terada Pump Manufacturing Co., Ltd. However, the angle of the dropping branch pipe portion was set in the vertical direction.
[0017]
Note that a mesh screen made of SUS304 (5 mesh, wire diameter of 0.75 mm) was placed inside the gun metal union. Here, after supplying water with a pump and filling the pipe with water, the drain plug was closed and drained, and only one ball valve was opened and left for 10 minutes to confirm the presence or absence of backflow of air.
[0018]
(Example 2)
Instead of the SUS304 mesh screen, the same procedure as in Example 1 was performed, except that four SUS304 plates (diameter 18 mm) with four circular holes 7 mm in diameter were sandwiched.
[0019]
(Example 3)
Example 1 was repeated except that a SUS304 mesh screen (25 mesh, wire diameter 0.35 mm) was sandwiched.
[0020]
Example 4
Instead of the SUS304 mesh screen, the same procedure as in Example 1 was performed, except that a SUS304 plate (diameter 18 mm) having a 121 mm diameter circular hole was inserted.
[0021]
(Example 5)
The same procedure as in Example 1 was performed except that a SUS304 mesh screen (15 mesh, wire diameter 0.4 mm) was sandwiched and the dropping branch pipe was installed at an angle of 80 ° to the horizontal.
[0022]
( Reference example)
At each branch connection portion of the header body (RHD20-3; manufactured by Sekisui Chemical Co., Ltd.), gunmetal hexagon nipple 13A (M154MN; manufactured by Miyako), gunmetal elbow 13A (M148MN; manufactured by Miyako), gunmetal hexagon nipple 13A (M154MN; Miyako) ), Gunmetal elbow 13A (M148MN; manufactured by Miyako), double screw water pipe 13 × 200 (S4AK; manufactured by Miyako), gunmetal elbow 13 (M148MN; manufactured by Miyako), male screw adapter 13A (trade name “S”) Roquick MJ joint ”; manufactured by Sekisui Chemical Co., Ltd.), cross-linked polyethylene pipe 13A (trade name“ Eslopex 13A ”; manufactured by Sekisui Chemical Co., Ltd.) 5 m, male screw adapter 13A (trade name“ Esroquick MJ joint ”manufactured by Sekisui Chemical Co., Ltd.) ), Ball valve 1/2 (MT400; manufactured by Miyako) in this order, It was fixed so as not to float by the dollar band 13A (Akagi Co., Ltd.). In addition, the primary side is connected to an LX insulated female male socket 20A (manufactured by Sekisui Chemical Co., Ltd.), a hard vinyl chloride lined steel pipe 20A (manufactured by Sekisui Chemical Co., Ltd.), and a water drain plug (MT-A; manufactured by Takemura Seisakusho Co., Ltd.). CSL-100; manufactured by Terada Pump Manufacturing Co., Ltd. Moreover, the piping image using these systems was performed with the same content as Example 1.
[0023]
In addition, as shown in FIG. 6, the drain pipe header used was a branch pipe connected from a position lower than the lowest surface of the header body. The angle of the dropping branch pipe portion was set in the vertical direction. Here, after supplying water with a pump and filling the pipe with water, the drain plug was closed and drained, and only one ball valve was opened and left for 10 minutes to confirm the presence or absence of backflow of air.
[0024]
(Comparative Example 1)
Example 1 was repeated except that a SUS304 mesh screen (35 mesh, wire diameter 0.3 mm) was sandwiched.
[0025]
(Comparative Example 2)
Example 1 was performed except that a SUS304 mesh screen (4 mesh, wire diameter 0.8 mm) was sandwiched.
[0026]
(Comparative Example 3)
Instead of the SUS304 mesh screen, the same procedure as in Example 1 was performed, except that two SUS304 plates (diameter 18 mm) with two circular holes having a diameter of 8 mm were sandwiched.
[0027]
(Comparative Example 4)
Connection of the header body to each branch connection side of the header (RHD20-3; manufactured by Sekisui Chemical Co., Ltd.), gunmetal hexagon nipple 13A (M154MN; manufactured by Miyako), gunmetal elbow 13A (M148MN; manufactured by Miyako), both screw water supply pipes 13 × 175 (S4AK; manufactured by Miyako), gunmetal elbow 13 (M148MN; manufactured by Miyako), male screw adapter 13A (trade name “ESROQUICK MJ Fitting”; manufactured by Sekisui Chemical Co., Ltd.), cross-linked polyethylene pipe 13A (trade name) “Eslopex 13A”; manufactured by Sekisui Chemical Co., Ltd.) 5 m, male screw adapter 13A (trade name “Esuroquick MJ Fitting”; manufactured by Sekisui Chemical Co., Ltd.), ball valve 1/2 (MT400; manufactured by Miyako Co., Ltd.) The crosslinked polyethylene tube was fixed by a saddle band 13A (manufactured by Akagi Co., Ltd.) so as not to float. In addition, the primary side is connected to an LX insulated female male socket 20A (manufactured by Sekisui Chemical Co., Ltd.), a hard vinyl chloride lined steel pipe 20A (manufactured by Sekisui Chemical Co., Ltd.), and a water drain plug (MT-A; manufactured by Takemura Seisakusho Co., Ltd.). CSL-100; manufactured by Terada Pump Manufacturing Co., Ltd. However, the angle of the dropping branch pipe portion was set in the vertical direction. Moreover, the piping image using these systems was performed with the same content as Example 1.
[0028]
In addition, as shown in FIG. 7, the header for drainage piping used what the branch pipe was connected from the same position as the header body lowest surface. The angle of the dropping branch pipe portion was set in the vertical direction. Here, after supplying water with the pump and filling the pipe with water, the water was supplied with the pump and the pipe was filled with water. Only the stopper was opened and left for 10 minutes, and the presence or absence of backflow of air was confirmed.
[0029]
[Table 1]
[0030]
【The invention's effect】
As apparent from Table 1, in Examples 1 to 5 , there was no backflow of air and no residual water was observed. In Comparative Example 1, clogging in the piping occurred, and as a result, residual water was observed. Moreover, in Comparative Examples 2-4, there was a backflow of air and water could not be drained.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a drain piping header according to the present invention (Claim 1).
FIG. 2 is a schematic view showing a drain piping header of a reference example .
FIG. 3 is a conceptual diagram of piping using the water supply piping system for cold district houses according to the present invention (Claim 2 ).
FIG. 4 is an enlarged view of the header portion of the drainage pipe header used in Example 1.
FIG. 5 is an enlarged view of a plate portion of a drainage pipe header used in Example 4;
FIG. 6 is a header portion enlarged view of the header for the water vent pipe used in the Reference Example.
7 is an enlarged view of the header portion of the drainage pipe header used in Comparative Example 4. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Header part 2 Branch pipe 3 Dirt concrete 4 Header lowest surface 5 Residual water discharge mechanism 6 Drain plug

Claims (1)

Header body, and in the pipe for the header comprising a branch pipe connected to the header body, the holes of 5-30 mesh screen or 1~7mm provided to be perpendicular to the longitudinal direction of the branch pipe inside the tube A pipe header that can be drained to prevent freezing is placed at a position lower than the top surface of the soil concrete of the house, with the branch pipe side facing up,
Connect the branch pipe connected to the header to the corresponding watering facility by standing up on the soil concrete and crawl over it.
A water supply piping system for cold district dwellings in which a residual water discharge mechanism for draining water at a position below the same level as the header arrangement position is connected to the header .