JP2001090894A - Header for fluid distribution - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a header for fluid distribution enabling branch connection ports to be individually reoriented with ease at a work site when piping work is executed, enabling branch pipes connected to the branch connection ports to be connected parallel to a pipe laying plane, and enabling the branch pipes connected to the branch connection ports to be connected in a crossed state. SOLUTION: In this header for fluid distribution, the plurality of branch ports are provided in a side wall of a tubular header body, an elbow-shaped joint member is watertightly connected at one end thereof to each branch port, and openings in the other end of the elbow-shaped joint members connected to the plurality of branch ports have axes vertically shifted from each other by the bore of the openings.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a header for fluid distribution used in a header type piping system.

[0002]

2. Description of the Related Art Conventional headers for hot water supply are disclosed, for example, in JP-A-60-91081 and JP-A-2-2530.
No. 84 discloses a structure having a header main body formed into a hollow shape by a thermoplastic resin and a plurality of branch receptacles integrally projecting from a wall of the header main body. In the case of a header used in a general house, the number of branch receiving ports is 2 to 5.

[0003] By the way, water supply for apartment houses and detached houses
In hot water supply piping, in recent years, the header method or the sheath pipe header method has rapidly spread. As shown in FIG. 8, the header construction method is to install a water supply header 2a and a hot water supply header 3a on a concrete surface G of a building, and to use a flexible material such as a cross-linked polyethylene pipe or polybutene pipe from the headers 2a, 3a. This is a piping system for piping to the faucet of each equipment using the resin pipe 4a having

In FIG. 8, reference numeral 1a denotes a water supply pipe for drawing into a building, which is connected to one end of a water supply header 2a. 5a is a kitchen, 6a is a washroom, 7a is a bathroom, 8
a is a washing machine, 9a is a toilet, and 10a is a water heater.

[0005] At this time, since a floor rolling method of rolling and laying on a horizontal concrete surface is generally adopted as a plumbing method, the header is arranged so that the laying surface and the axis of the branch are parallel. As a result, the axis of the branch of the header is substantially parallel to the pipe laying surface. The header is often installed under the floor of the washroom, which is generally the center of the water area. The reason for this is that the total length of the piping is the shortest, so that the cost of the piping material can be saved, and in the case of hot water supply, the hot water waiting time can be shortened.

[0006]

However, the conventional header has a main pipe connection port at both ends (or one end) of the header main body and a branch port in a direction perpendicular to the axis of the header main body. Therefore, a socket joint is connected to the branch port, and a branch pipe is connected to the socket joint. Each branch port is oriented in the same direction or the opposite direction, and in each case, the axis of the branch port is located on the same plane. As described above, since the pipe connection port is parallel to the laying surface, the pipe connection port can actually be directed only in two directions.

Since the header is generally installed near the center around the water, the most efficient method is to lay pipes radially from the header to each faucet. However, in an actual site, it is necessary to perform piping while avoiding various obstacles such as foundations, bundles, unit bath legs, and drain pipes. Also,
Although the resin pipe used has some flexibility, it is necessary to secure a minimum bending radius of the pipe in order to prevent buckling. Since it is necessary to insert the pipe straight into the branch port of the header, the pipe near the header must be laid with a straight section of at least about 20 cm in a direction perpendicular to the axis of the header body.

In a general piping work procedure, piping is performed from the faucet side of each equipment, and finally the resin pipe is connected to the header, so that the various factors described above are wrinkled. . It is easier to connect the resin pipe straight into the joint of the header, but according to the conventional header and the installation location of the header, there are many cases where the resin pipe is inserted into the socket joint while bending the resin pipe. It is hard to remove. Therefore, it takes time for the operation, and a water leakage accident is likely to occur.

An object of the present invention is to make it possible to easily change the direction of each branch connection port at the construction site during pipe construction, and to connect a branch pipe connected to this branch connection port to a pipe laying surface. To provide a header for fluid distribution that can be piped in parallel to

Another object of the present invention is to provide a fluid distribution header which can be connected to pipes in a state where branch pipes connected to branch connection ports cross each other.

[0011]

According to a first aspect of the present invention, there is provided a fluid distribution header, wherein a plurality of branch ports are provided on a side wall of a cylindrical header body, and each of the branch ports has an elbow-shaped joint member. One end is connected in a watertight manner.

According to a second aspect of the present invention, in the fluid distribution header according to the first aspect of the present invention, a flange is provided at an outer edge of one end of the elbow-shaped joint member, and this flange surface is branched through a seal packing. And one end of the elbow-shaped joint member is screwed to the end face of the branch port with a cap nut.

According to a third aspect of the present invention, there is provided the fluid distribution header according to the first aspect of the present invention, wherein the O-ring and the annular packing having a U- or V-shaped cross section are mounted inside the end of the branch port. One end of the elbow-shaped joint member is inserted, the outer wall of the elbow-shaped joint member abuts on an O-ring and an annular packing having a U or V-shaped cross section, and one end of the elbow-shaped joint member and the branch port. 2. The fluid distribution header according to claim 1, wherein the end is threadedly connected with a cap nut.

According to a fourth aspect of the present invention, there is provided a fluid distribution character-shaped header according to any one of the first to third aspects, wherein each of the elbow-shaped joint members connected to the plurality of branch ports is provided. The axes of the end openings are vertically displaced by the diameter of the opening.

(Function) In the fluid distribution header according to the first aspect of the invention, one end of the elbow-shaped joint member is provided in a watertight manner at each of a plurality of branch ports provided on the side wall of the short cylindrical header body. Since the connection is established, the direction of the other end opening of the elbow-shaped joint member can be changed by changing the attachment position of the elbow-shaped joint member with respect to each branch port.

By installing the header on the laying surface with the branch port facing upward, the branch pipe connected to the other end of the elbow-shaped joint member can be pipe-connected in parallel with the pipe laying surface. it can.

In the fluid distribution header according to the second aspect of the present invention, a flange is provided at one end outer edge of the elbow-shaped joint member, and the flange surface is in contact with the end surface of the branch port via the seal packing. Since one end of the elbow-shaped joint member is screwed to the end face of the branch port with a cap nut, the direction of the other end of the elbow-shaped joint member can be freely set in any direction. As a result, the piping direction of each branch pipe connected and connected to the other end of the elbow-shaped joint member can be set to an arbitrary direction.

In the fluid distribution header according to the third aspect of the invention, an O-ring and an annular packing having a U-to-V-shaped cross section (hereinafter referred to as a U-ring) are attached to the inner surface of the end of the branch port, and the elbow is provided. One end of the joint member is inserted and the outer wall thereof is in contact with the O-ring and the U-ring, and one end of the elbow joint member and the end of the branch port are screwed together with a cap nut, The direction of the other end of the elbow-shaped joint member can be freely set in any direction. As a result,
The pipe direction of each branch pipe connected and piped to the other end of the elbow-shaped joint member can be set to an arbitrary direction.

According to the fourth aspect of the present invention, the axial center of the other end opening of each of the elbow-shaped joint members connected to the plurality of branch ports is vertically extended by the diameter of the opening. Since the pipes are shifted, the pipes connected to the other end of each elbow-shaped joint member can be connected in a state where the pipes cross each other.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a front view showing an embodiment of a header for fluid distribution according to the present invention, FIG. 2 is a partially enlarged sectional view showing a part of an example of FIG. 1, and FIG. 3 is a partial half section showing a part of FIG. FIG. 4 is a partially enlarged half sectional view of another example of FIG.

Reference numeral 1 denotes a gunmetal header for distributing hot water, which has a cylindrical header body 2 having a predetermined length and four 90 headers.
And the elbow joint 3.

Four branch ports 21 are integrally provided on the side wall of the header body 2 at predetermined intervals along the longitudinal direction thereof. A male screw 22 is provided on the outer peripheral surface of each branch port 21. One of both ends of the header body 2 is closed.

As shown in FIG. 2, an outward flange 31 is provided at one end of the elbow joint 3, and an inward flange 41 of the cap nut 4 is locked and attached to this flange 31. On the inner peripheral surface of the cap nut 4, a female screw 42 screwed to the male screw 22 of the branch port 21 is provided. In addition, the other end of the elbow joint 3 is a fastening type connecting portion 3.
It is 2.

Specifically, as shown in FIG.
Reference numeral 2 denotes a guide portion 321 having a small diameter and three sawtooth-shaped protrusions 3211 on its outer peripheral surface, and a C-shaped cross-section 322.
, A tightening band 323 and the tightening band 32
3 and a seal O attached to the annular groove 3212 of the guide portion 321.
And a ring 325.

As shown in FIG. 2, the outward flange 31 surface of the elbow joint 3 is brought into contact with the upper end surface of the branch port 21 via the seal packing 5 made of synthetic rubber, and the female screw 42 of the cap nut 4 is connected to the branch port. 21 is screwed into the male screw 22 and the one end of each elbow joint 3 is attached to the header body 2.
The header 1 is screwed and connected to each of the branch ports 21 with the cap nuts 4. Then, the seal packing 5 is compressed between the upper end surface of the branch port 21 and the outward flange 31 surface of the elbow joint 3 and connected in a watertight manner.

Further, as shown in FIG. 4, a male screw adapted to the screw of the cap nut is provided on the outer surface of the end of the branch port, and an O-ring and a U-ring are mounted on the inner surface, and an elbow-like shape is provided. One end of the joint member is inserted into the branch port and its outer wall is
A stopper ring is attached to one end of the elbow-shaped joint member to be in contact with the ring and the U-ring, and a stopper nut for locking a cap nut is attached. The elbow-shaped joint and the end of the branch port are screwed together with a cap nut. ing.

Next, the mode of use of the header 1 for distributing hot water will be described. First, as shown in FIG. 5, an end of a hot water supply pipe 7 provided from a water heater (not shown) such as a gas water heater is connected to an end of the header 1. Next, the header 1 is fixed at a predetermined position on the concrete surface G with a U-shaped support fitting 8. And the male screw 22 of each branch port 21
Loosen each cap nut 4 screwed into the
The direction of the connecting portion 32 is changed to a predetermined direction as shown in FIG.
Is fixed.

Next, the end of the crosslinked polyethylene pipe 6 is externally inserted into the guide part 321 of the connection part 32 of each elbow joint 3,
The tightening band 323 is tightened with a bolt / nut 324 and connected. At this time, the diameter of the split 322 is reduced by tightening the tightening band 323, and the inner and outer wall portions of the extrapolated cross-linked polyethylene pipe 6 are formed with ridges on the inner circumferential surface of the tightening band 323 and ridges on the outer circumferential surface of the guide portion 321. 32
The O-ring 325 tightened at 11 and attached to the annular groove 3212 of the guide portion 321 is compressed to obtain a water-tight connection portion.

Then, the piping is completed by piping each crosslinked polyethylene pipe 6 connected to the connection portion 32 of each elbow joint 3 to predetermined equipment.

In the above embodiment, the outward flange 31 of the elbow joint 3 is connected to the branch port 2 of the header body 2 by the cap nut 4.
1, the direction of the elbow joint 3 is changed to an arbitrary direction, and each crosslinked polyethylene pipe 6 is laid in an arbitrary direction, that is, radially from the branch port 21 of the header body 2. be able to.

As a result, the length of the entire pipe can be substantially reduced, and the cost of the pipe material can be reduced. Also,
By shortening the piping length, the hot water waiting time from the opening to the release of hot water of a predetermined temperature is shortened in each equipment in a kitchen or a toilet.

Further, the connection between the crosslinked polyethylene pipe 6 and the connection portion 32 of the elbow joint 3 can be easily performed with good workability, and quick and accurate piping can be performed.

The means for connecting the branch port 21 of the header main body 2 and the elbow joint 3 is not limited to the one in the above-described embodiment.
The connection means shown in (a) to (d) may be used.

In the embodiment shown in FIG. 6 (a), a female screw 23 is provided on the inner peripheral surface of the branch port 21, while a male screw 33 is provided at one end of the elbow joint 3, and the two screw portions are screw-connected. is there.

In the embodiment shown in FIG. 6B, the inner peripheral surface of the branch port 21 is a tapered receptacle 24, while the outer peripheral surface of one end of the elbow joint 3 is a tapered port 34. The insertion port 34 is bonded (or fused). An annular locking portion 34a is provided integrally on the outer peripheral surface of the insertion port 34. In this case, it is desirable that the header body 2 and the elbow joint 3 are made of a resin such as a crosslinked polyethylene resin or a polyphenylene sulfide resin.

The embodiment of FIG. 6C differs from the embodiment of FIG. 5B in that instead of bonding (or fusing),
O-ring 5 for sealing between the receptacle 24 and the outlet 34
The connection is made via a.

In the embodiment shown in FIG. 6D, an outward flange 31 is provided at one end of the elbow joint 3 and a branch port 21 is provided.
An outward flange 25 is provided at the upper end of the
31 is flange-connected with a bolt and a nut via the seal packing 5.

As means for connecting the branch port 21 and the elbow joint 3, means other than those described above can be employed.
For example, if the joint system has a retaining mechanism using a C-shaped split ring, or if the elbow joint 3 is made of resin, a collet (or a tightening ring) disclosed in Japanese Patent Application Laid-Open No. 6-193787 or the like is used. ) May be adopted.

FIG. 7 is an explanatory view showing a modification of the header for distributing fluid of the present invention together with a use state. In the case of this embodiment, the header is basically the same as that of the first embodiment except that the lengths of the rising portions of the four elbow joints connected to the four branch ports 21 of the header body 2 are changed respectively. Are the same, and the same portions are denoted by the same reference numerals and description thereof will be omitted.

As shown in FIG. 7, the length of the rising portion of the elbow joint 3 connected to the branch port 21 located closest to the side of the hot water supply pipe 7 connected to the header body 2 is the shortest. The length of the rising portion of the joint 3A is longer than that of the elbow joint 3 by a length corresponding to the diameter of the connection portion 32. Similarly, the length of the rising portion of the elbow joint 3B is longer than that of the elbow joint 3A by the length corresponding to the diameter of the connecting portion 32, and the length of the rising portion of the elbow joint 3C is larger than that of the elbow joint 3B. The length corresponding to the length of each.

As described above, by changing the length of the rising portions of the four elbow joints 3 to 3C by a multiple of the diameter of the connecting portion 32, the crosslinked polyethylene pipe connected to the connecting portion 32 of each of the elbow joints 3 to 3C is changed. Piping can be performed in a state where the 6 cross each other.

In the above embodiment, a single row of branch ports is provided on the side wall of the header main body along the axial direction. However, the diameter of the header main body may be increased so that the branch ports are provided in two rows or in a staggered manner. Good.

In the above-described embodiment, the header body is integrated. However, as disclosed in Japanese Patent Application Laid-Open No. H11-94170, for example, a three-way pipe joint type header unit is It is also possible to use a connection type configured by connecting and connecting.

Further, in the above-described embodiment, the connection portion of the elbow joint is of the tightening band type using the split ring, but may be of any other connection type.

[0045]

In the header for fluid distribution according to any one of claims 1 to 4, one end of each of the elbow-shaped joint members is watertight at a plurality of branch ports provided on the side wall of the cylindrical header body. The branch pipe connected to the other end of the elbow-shaped joint member is connected in parallel to the pipe laying surface by installing the header on the laying surface with the branch port facing upwards. can do.

Further, in the fluid distribution header according to the second aspect of the present invention, a flange is provided at one end outer edge of the elbow-shaped joint member, and this flange surface comes into contact with the end surface of the branch port via the seal packing. Since one end of the elbow-shaped joint member is threadedly connected to the end face of the branch port with a cap nut, the direction of the other end of the elbow-shaped joint member can be freely set in any direction. The pipe direction of each branch pipe connected and piped to the other end of the joint member can be set to an arbitrary direction.

In the fluid distribution header according to the third aspect of the present invention, an O-ring and a U-ring are mounted on the inner surface of the end of the branch port, one end of an elbow-shaped joint member is inserted, and the outer wall is formed with the O-ring. Since the one end of the elbow-shaped joint member and the end of the branch port are threadedly connected to each other with a cap nut, the end of the elbow-shaped joint member can be freely oriented in any direction. Can be set. As a result, the piping direction of each branch pipe connected and connected to the other end of the elbow-shaped joint member can be set to an arbitrary direction.

As described above, since each branch pipe can be piped in an arbitrary direction, the total pipe length can be substantially shortened, and the cost of piping materials can be reduced. In addition, since the pipe length is shortened, in each equipment in a kitchen or a lavatory, it is possible to reduce a waiting time for hot water at a predetermined temperature after the hot water is opened after opening, and to distribute hot water for a hot water supply pipe. It is suitable as a header.

Further, in the fluid distribution header according to the fourth aspect of the present invention, the axis of the other end opening of each of the elbow-shaped joint members connected to the plurality of branch ports is vertically moved by the diameter of the opening. Since the pipes are shifted in the direction, the pipes connected to the other end of each elbow-shaped joint member can be connected in a state where the pipes cross each other.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a header for fluid distribution according to the present invention.

FIG. 2 is a partially enlarged cross-sectional view showing a part of an example of FIG.

FIG. 3 is a partial half sectional view showing a part of FIG. 2;

FIG. 4 is a partially enlarged half sectional view showing a part of another example of FIG. 1;

5A and 5B are a plan view and a front view showing a usage mode of the fluid distribution header of FIG.

FIG. 6 is a partial cross-sectional view showing a modification of the connecting means between the branch port and the elbow joint.

FIG. 7 is an explanatory diagram showing a modification of FIG. 1 together with a state of use.

FIG. 8 is an explanatory view showing a conventional header for fluid distribution together with a used state.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Hot water distribution header 2 Header main body 21 Branch port 3, 3A, 3B, 3C 90 degree elbow joint 31 Outward flange 32 Connection part 4 Cap nut 41 Inward flange 42 Stopper ring 5 Seal packing 51 O-ring 52 Cross section is U To V-shaped annular packing (U-ring)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoshi Ichinozawa 3-15-1 Negishidai, Asaka-shi, Saitama Sekisui Pipe Materials Technics Co., Ltd. (72) Yasuo Ikeya 3-15-1 Negishidai, Asaka-shi, Saitama (72) Inventor Yutaka Kanehira 3-15-1 Negishidai, Asaka-shi, Saitama F-Term (in reference) 2D060 AB03 AC03 3H014 DA02 3H019 BA43 BB08 EA11 FA05

Claims (4)

[Claims] A plurality of branch ports are provided on a side wall of a cylindrical header body, and one end of an elbow-shaped joint member is connected to each of the branch ports in a watertight manner. header. 2. A flange is provided at an outer edge of one end of an elbow-shaped joint member, and this flange surface is in contact with an end surface of a branch port via a seal packing, and one end of the elbow-shaped joint member is connected to an end surface of the branch port. The fluid distribution header according to claim 1, wherein the header is fluidly connected by a cap nut. 3. One end of an elbow-shaped joint member is inserted inside an end of a branch port provided with an O-ring and an annular packing having a U-to-V-shaped cross section, and the outer wall of the elbow-shaped joint member is O-shaped. 2. The fluid according to claim 1, wherein the ring is in contact with an annular packing having a U- or V-shaped cross section, and one end of the elbow-shaped joint member and an end of the branch port are screwed together with a cap nut. Header for distribution. 4. The elbow-shaped joint member connected to the plurality of branch ports, wherein the axial center of the other end opening is vertically displaced by the diameter of the opening. Header for fluid distribution.