JP2934722B2 - Silence structure in double piping of fluid pipe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silencing structure in a double pipe of a fluid pipe used for installation around water such as heating and hot water supply in a building.

[0002]

2. Description of the Related Art In recent years, as shown in FIG. 3, a water supply unit (A) such as a water heater (10) and a water faucet (20) have been used for the construction of water around a building for heating and hot water supply. And a flexible fluid pipe (R), and the fluid pipe (R) is inserted into a flexible sheath pipe (S) and piped to the back of the wall (C), etc. ,
The so-called sheath tube method has become widespread. Such a construction method,
Free piping on the back of the wall (C) is possible, so less work is required compared to the previous piping method using metal pipes, and maintenance such as easy replacement of the fluid pipe (R) is possible. Has the merit that it can be easily performed.

[0003]

However, in a plumbing system for water, when the water tap is used, if the valve is closed and the flow of water is suddenly stopped, the pressure in the pipe near the water tap suddenly increases, and the pipe returns. As a result, water collides with the inner wall of the pipe, causing a water hammer phenomenon in which sound is generated. In the above-mentioned sheath pipe construction method, since the fluid pipe (R) is protected in the sheath pipe (S) against the sound generated by such a water hammer phenomenon, the sheath pipe (S) has a soundproofing effect. I was able to mute that sound.

However, in such a sheath tube method,
As shown in FIG. 4, the fluid pipe (R) is flexible, so that when the flow of water in the pipe suddenly stops, the fluid pipe (R) undulates with the water hammer phenomenon. This collides with the inner wall of the sheath tube (S), and the fluid tube (R)
A new problem arises in that loud collision noise is generated between the tube and the sheath tube (S).

[0005] Such a collision noise is generated mainly by the fluid pipe (R) rubbing against the inner wall of the sheath pipe (S) at the bent part of the pipe, and is prevented by the soundproofing effect of the sheath pipe (S) like a water hammer. Can not do. Such a collision sound may cause discomfort to a person using the water tap, or may cause damage to the fluid pipe (R).

The present invention has been made in view of such circumstances, and has a double piping structure in which a flexible fluid pipe for passing a fluid such as hot water or water is inserted into a flexible sheath pipe. It is an object of the present invention to provide a silencing structure for completely eliminating sound generated in a sheath tube in a fluid pipe.

[0007]

That is, according to the present invention, there is provided a muffling structure for a fluid pipe according to the present invention, which is described as "a fluid pipe having a flexible sheath pipe through which a fluid such as hot water or water passes through a flexible sheath pipe. A muffling structure for muffling the sound of collision between the fluid pipe and the sheath pipe in the piping of
A long sheet-like cushioning material wound in the width direction without being fixed is interposed in a space formed between the fluid pipe and the sheath pipe. "

[0008]

According to the sound deadening structure of the present invention, the flow of water in the pipe suddenly stops and the pressure in the pipe sharply increases, and when the water returns, the water collides with the inner wall of the pipe. The buffer material prevents the flow of water in the pipe from suddenly stopping and the fluid pipe from waving, preventing the sound of collision between the fluid pipe and the sheath pipe, and generating sound. Can be completely eliminated.
In addition, since the cushioning material is in the form of a long sheet, a sound-absorbing structure can be formed at low cost.

According to this noise reduction structure, the fluid pipe is inserted into the sheath pipe while a long sheet-shaped cushioning material is wound in the width direction around the outer circumference of the fluid pipe, and the fluid pipe is inserted between the fluid pipe and the sheath pipe. In such a case, a cushioning material can be interposed in the space formed in such a case. In this case, the cushioning material is wound around the outer periphery of the fluid pipe in advance, or the fluid pipe and the cushioning material are further joined by an adhesive or the like. As compared with a case where these are inserted into the sheath tube after being integrated, the operation is simplified, and the buffer material can be easily interposed in the space between the fluid tube and the sheath tube.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 and FIG. 2 show an embodiment of the present invention. In this embodiment, the fluid pipe (R) is made of a plastic such as polyethylene. The sheath tube (S) is made of plastic and has flexibility. The cushioning material (1) is made of rubber, sponge, soft plastic or the like. It is preferable that the cushioning material (1) is elastic and has a high restoring force. In addition, the surface is preferably smooth in order to facilitate insertion into the sheath tube (S).

That is, in this embodiment, a fluid pipe (R) and a sheath pipe
(S) and a sheet-like cushioning material (1) wound around the outer periphery of the fluid pipe (R) and housed in the sheath pipe (S). In this embodiment, as shown in FIG. 1, the fluid pipe (R) is inserted into the sheath pipe (S) while the cushioning material (1) is wound around the fluid pipe (R). In addition, it is possible to adopt a noise reduction structure in which a buffer material (1) is interposed in a space between the fluid pipe (R) and the sheath pipe (S).

In this embodiment, when the cushioning material (1) is inserted into the sheath tube (S) together with the fluid pipe (R), the tip of the cushioning material (1) is connected to the fluid pipe using a tape or the like. If fixed to (R), the buffer material (1) can be smoothly fed into the sheath tube (S) together with the fluid tube (R).

In this embodiment, as described above, a long sheet-like cushioning material (1) is wound in the width direction around the outer circumference of the fluid pipe (R), and the fluid pipe is inserted into the sheath pipe (S). (R) is inserted and the cushioning material (1) is formed in the space formed between the fluid pipe (R) and the sheath pipe (S).
Can be interposed, so that after the cushioning material is wound around the outer periphery of the fluid pipe (R) in advance, or after the fluid pipe (R) and the cushioning material are joined together by an adhesive or the like and then integrated, The operation is simplified as compared with the case of inserting into the sheath tube (S), and the cushioning material (1) can be easily interposed in the space between the fluid tube (R) and the sheath tube (S).

In the present invention, the form of the cushioning material (1) is not limited to that of the above embodiment, but may be a fluid pipe (R) and a sheath pipe.
Any form can be used as long as the cushioning material (1) can be interposed in the space formed between (S).

[0015]

As described above, in the sound deadening structure of the present invention, the flow of water in the pipe is suddenly increased by interposing the cushioning material in the space formed between the fluid pipe and the sheath pipe. It is possible to effectively prevent the stoppage of the fluid pipe and the waving state of the fluid pipe, and the generation of collision noise between the fluid pipe and the sheath pipe. Therefore, the flow of water in the pipe suddenly stops and the pressure in the pipe sharply increases, and the return of the water prevents the water from hitting the inner wall of the pipe, thereby preventing the sound generated by the water hammer phenomenon. The buffer material prevents the flow of water from suddenly stopping and the fluid pipe becoming wavy, preventing the sound of collision between the fluid pipe and the sheath pipe from being generated, and completely eliminating the generation of sound. . As a result, the person using the water tap does not feel uncomfortable due to the collision sound. In addition, the fluid pipe does not cause damage due to collision with the sheath pipe.

Since the long sheet-like cushioning material is wound around the outer periphery of the fluid pipe in the width direction, it can be easily interposed in the space between the fluid pipe and the sheath pipe. Also,
Since the cushioning material is in the form of a long sheet, a sound-absorbing structure can be formed at low cost.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of the present invention.

FIG. 2 is a cross-sectional view showing one embodiment of the present invention.

FIG. 3 is a side view showing a piping structure of a fluid pipe by a sheath pipe method.

FIG. 4 is a longitudinal sectional view for explaining movement of a fluid pipe in a sheath pipe.

[Explanation of symbols]

 1 buffer material R fluid pipe S sheath pipe

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16L 55/02 F16L 9/18 F16L 11/12

Claims (1)

(57) [Claims] 1. A fluid pipe and a sheath pipe which are generated together with a water hammer phenomenon in a double pipe of a fluid pipe in which a fluid such as hot water or water is inserted through a flexible sheath pipe. And a long sheet-like cushioning material that is wound in the width direction without being fixed to the outer periphery of the fluid pipe. A sound deadening structure in a double pipe of a fluid pipe, which is interposed in a space formed between the two pipes.