JPH0573396U - Faucet elbow - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a faucet elbow having a water hammer prevention function that is particularly effective when used in a sheath pipe header construction method. [Structure] A connecting portion for connecting to a primary side water supply pipe is provided at one end, and a connecting portion for connecting to a valve for opening and closing a flow passage such as a water faucet is provided at the other end, and a flow passage is provided between the both end portions. A faucet elbow connected by means of a pipe, wherein the faucet elbow is divided into a primary side member connected to a primary side water supply pipe and a secondary side member connected to a valve. The member has a bulging portion that bulges out in an annular shape at the divided portion, and the bulging portion forms a sealed air chamber surrounded by a ring-shaped rubber. A faucet elbow, characterized in that it is sandwiched between secondary side members and both members are fastened together, and that the sealed air chamber absorbs the impact pressure of the fluid generated when the faucet is closed. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a faucet elbow for connecting valves such as a faucet, and more particularly to a faucet elbow that prevents abnormal noise and pressure from occurring in piping when a valve is opened and closed.

[0002]

[Prior Art]

 Conventionally, a water faucet elbow used for hot water supply and hot water supply piping is made of cast metal or resin and has a connecting portion at both ends and a 90 ° curved flow path in the central portion. Further, as a water hammer preventer, there is one disclosed in Japanese Utility Model Publication No. 2-203099. In this case, a pressure buffer is provided inside the casing, and both ends of the casing are connected by pipe joints.

[0003]

[Problems to be solved by the device]

 On the other hand, a water supply and hot water supply sheath pipe header method has recently been carried out in which a water supply pipe is passed through the sheath pipe to be piped inside the wall or under the floor. In this method, the header pipe installed outdoors and the water tap are connected by a resin water pipe that is directly installed in the sheath pipe, and almost the water tap is also piped in the wall. In this method, when the faucet is closed suddenly, the water supply pipe moves inside the sheath pipe and an abnormal noise is generated. In order to eliminate this abnormal sound, the water hammer preventer with an air chamber can be eliminated by installing it in the middle of the pipe, but in the above sheath pipe header construction method, the water supply pipe is piped in the sheath pipe. It could not be provided because of.

Although it is possible to provide a water hammer preventer in the header portion, the header portion is a base portion further on the primary side of the water supply pipe and is not effective in preventing abnormal noise of the water supply pipe. In addition, it is possible to install a small water hammer protector in the wall, but in this case inspection and repair is impossible. If it is installed closer to the room than the wall, the aesthetics of the room will be impaired and the room space will be narrowed, which will be an obstacle. The present invention eliminates the above problems and provides a faucet elbow having a water hammer prevention function that is particularly effective when used in a sheath pipe header construction method.

[0005]

[Means for Solving the Problems]

 The gist of the present invention is to have a connecting portion for connecting with a primary side water supply pipe at one end and a connecting portion for connecting with a valve for opening and closing a passage such as a faucet at the other end, and between the both end portions. Is a water faucet elbow connected by a flow path, and the faucet elbow is divided into a primary side member connected to a primary side water supply pipe and a secondary side member connected to a valve. The secondary side member has a bulging portion that bulges out in an annular shape at the divided portion, and a sealed air chamber is formed in the bulging portion that surrounds the flow path with an annular rubber. The secondary side member and the secondary side member are sandwiched and integrally fastened to each other, and the shock pressure of the fluid generated when the faucet is closed is absorbed by the sealed air chamber. It is a water faucet elbow. This faucet elbow can be installed by piping in a faucet box buried in a wall. The faucet box has an opening that allows the faucet elbow to be taken in and out. During repairs and inspections, the faucet elbow can be easily ejected from the faucet box to the room side for repair and inspection. The opening of the faucet box coincides with the opening of the wall, but since the lid is provided to cover the opening, the inside of the box cannot be seen and the appearance is maintained.

[0006]

[Action]

 Since the present invention has the above-mentioned configuration, the faucet elbow and the sealed air chamber are integrated. A sealed air chamber is annularly arranged around the flow path of the faucet elbow. Therefore, the size can be made compact and the faucet elbow can be housed in the faucet box and housed in the wall. Therefore, the pipe can be used for the sheath pipe header-construction method, the abnormal pressure can be eliminated even when the faucet is suddenly closed, and the abnormal noise of the pipe can be eliminated. In addition, since the present invention has a volume absorbing device that seals gas near the faucet, it is easy to absorb abnormal pressure of the fluid, and the base part on the primary side of the volume absorbing device by the air chamber is affected by abnormal pressure. It does not hurt. Furthermore, since there is a sealed air chamber around the flow path, abnormal pressure can be absorbed efficiently.

[0007]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows the first embodiment, and shows a state in which the water is accommodated in the faucet box 12 mounted in the wall 23 and piped. The faucet elbow 27 is provided by fastening two separate members on the connection side with the faucet and the connection side with the water supply pipe 17 with bolts and nuts 30 and 31. The fastening portion 33 is provided with a bulging portion 28 for both members, and a rubber member 29 having an annular cross section with a square cross section and a flange portion 32 is mounted in the bulging portion 28. It is fastened together with the body of the faucet elbow. Air is sealed in the rubber member 29 to form the air chamber 11, and the elastic action of the rubber member 29 causes the air in the air chamber to contract to form a volume absorbing device. The rubber member 29 is made of butyl rubber or the like having excellent air permeation resistance, and air is sealed in the air chamber 11.

The flow path 9 is bent at a right angle in the lower direction, and a connection portion 13 connected to a water supply pipe 17 made of resin is provided at the lower end portion. When the faucet connected to the female screw 14 is suddenly closed, the water flow flowing in the water supply pipe and the faucet elbow is stopped, so that the fluid pressure at this time disappears and an abnormally large impact pressure is generated. Although generated, this impact pressure is added to the rubber member 29 forming the air chamber near the faucet, and is absorbed by the elastic absorbing action of the volume of the air chamber 11 to exert an abnormal pressure on the base side of the water supply pipe 17. Absent.

The faucet elbow 1 is fixed to an outer wall 25 by a fixed seat 24, and is housed in a faucet box 12 embedded in a wall space 23 with an inner wall 19. The box 12 is fixed to the outer wall 25 and is connected to the sheath pipe 18 through the packing 16, and is attached to the opening formed in the inner wall 19. The opening 20 of the box has a size capable of accommodating the faucet elbow 1 and allowing it to be put in and taken out. Has been. The lid 15 is provided with a packing 16 and is sealed with the inner wall 19.

The water supply pipe 17 is piped from an external header into a sheath pipe 18 in which a wall 23 is provided under the floor, and is connected to a connecting portion 13 of the faucet elbow 1. When the faucet is connected to the female thread 14 of the faucet elbow in such a piped state, only the faucet is placed inside the room and there is no obstructive piping material, so the inside of the room is aesthetically pleasing. Even if it leaks at 14, etc., water will not enter the building due to the packing 16, 16 and will pass through the sheath pipe 18 and be discharged to the header part fixed to the outside of the building. Further, the inspection and repair of the air chamber 11 and the connection parts 13 and 14 of the faucet elbow can be easily performed because the faucet elbow 1 can be easily pulled out to the indoor side together with the water supply pipe 17 by removing the lid 15.

FIG. 2 shows another embodiment of the present invention. In this case, the faucet elbow 1 has two members, a cap nut, which is separated into a connection side with a faucet and a connection side with a water supply pipe 17. It is fastened at 34 and is integrally provided. The faucet elbow 1 is fixed to the outer wall 25 by a fixed seat 18 with the outer wall, and the inner wall 19 side is sealed with a lid 15. Also in this case, the wall space 23 between the inner wall 19 and the outer wall 25 can be effectively used for piping. Air is sealed in the rubber member 29 to form the air chamber 11, and the elastic action of the rubber member 29 causes the air in the air chamber to contract to form a volume absorbing portion. In this embodiment as well, since the air chamber 11 is located near the faucet connected to the female screw 14, the impact pressure due to the closure of the faucet can be efficiently absorbed and can be housed in the box 12, so that the sheath pipe header-construction pipe As in the case of the first embodiment, it is possible to use a pipe having an aesthetic appearance without abnormal pressure.

[0012]

[Effect of the device]

 As described above, since the faucet elbow according to the present invention can be housed in the faucet box, abnormal noise can be prevented even in the sheath pipe header-construction pipe. In addition, since it is stored in and out of the inner wall, the appearance is maintained, and since it has a volume elastic absorption part by the air chamber near the faucet and around the flow path, it has an excellent effect of absorbing impact pressure. In addition, repairs and inspections of the faucet elbow connection and bulk elasticity absorber can be easily performed.

[Brief description of drawings]

FIG. 1 is a partial sectional view showing a first embodiment of the present invention.

FIG. 2 is a partial sectional view showing a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Faucet elbow 2, 28 Bulging part 11 Air chamber 12 Faucet box 13 Connection part with a water supply pipe 14 Connection screw with a water faucet 16 Packing 17 Water supply pipe 18 Sheath pipe 19 Inner wall 25 Outer wall 29 Rubber member 33 Fastening part 34 Cap nut

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location F16L 23/028 41/08 8508-3J 55/04

Claims (1)

[Scope of utility model registration request] 1. A connecting part for connecting to a primary side water supply pipe at one end, and a connecting part for connecting to a valve for opening and closing a flow path such as a faucet at the other end, and connecting between the both ends. A faucet elbow connected by a flow path, wherein the faucet elbow is divided into a primary side member connected to a primary side water supply pipe and a secondary side member connected to a valve.
The divided member of the secondary member and the secondary member has a bulging portion protruding in an annular shape, and a sealed air chamber surrounded by a ring-shaped rubber is formed in the bulging portion to surround the flow passage. Is sandwiched between a primary side member and a secondary side member and both members are integrally fastened, and a shock pressure of a fluid generated when the faucet is closed is absorbed by the sealed air chamber. A faucet elbow.