JPH02140555A - Water hammer sound absorber - Google Patents

Abstract

PURPOSE:To easily mount a water hammer sound absorber in a hot water supplying apparatus and to provide durable and semipermanent effects by forming a gas chamber by a pipe on the outer surface of an inner pipe for forming a water passage, providing pores in the inner pipe, and connecting them to the chamber. CONSTITUTION:An inner pipe 4 for forming a passage 3 between a lower inlet 1 and an upper outlet 2, and an outer pipe 6 for forming a gas chamber 5 outside the passage 3 are provided, and pores 7 are formed at the pipe 4 to connect the chamber 5 to the passage 3. When the supply of hot water is stopped, hydraulic pressure is raised. Part of water introduced from the pores 7 by the hydraulic pressure compresses the gas of the chamber 5 to reduce its volume. Thus, abrupt hydraulic pressure rise is absorbed to alleviate pressure shock which affects pipes and equipments, thereby absorbing water hammer sound.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a water hammer sound absorber that is installed in the middle of a water supply channel of a water heater.

Prior Art Conventionally, as shown in FIG. 2, a spherical container 3 is attached to a flow path 1 through an inlet 2. The interior of this container 3 is partitioned by a diaphragm 4 and consists of a chamber 5 communicating with the flow path 1 and a pressure absorption chamber 6 on the opposite side filled with nitrogen gas. When this is connected to the flow path of a water heater and the hot water supply is stopped, the pressure in the flow path increases suddenly, and the pressure rises in the container l.
The diaphragm 4 deforms toward the pressure absorption chamber 6 side to alleviate the pressure increase, thereby reducing the water hammer sound.

Problems to be Solved by the Invention However, in the above configuration, since the branch path 7 is formed in the middle of the flow path 1 and the container 3 is attached, it not only becomes a hindrance in installation work when installing a heat insulating material to prevent connection. Due to the use of diaphragm 4, durability was an issue.

The present invention solves the above-mentioned conventional problems, and has a structure that can be easily attached to a conventional water heater, and can be selectively installed only in homes with high water pressure without disassembling the device, and can be installed around the installed water heater. The purpose is to create a structure that allows easy wrapping of heat insulating material to prevent connection in winter, and a structure that has semi-permanent durability.

Means for Solving the Problems In order to achieve the above object, the means of the present invention includes an inner pipe having upper and lower water inlets and outlets, forming a flow passage between these inlets and outlets, and an outer periphery of the flow passage. The gas chamber is composed of an outer pipe that forms a gas chamber at the inner pipe, and a small hole is provided in the inner pipe so that the gas chamber is communicated with a flow path.

Effect: By the above means, the structure has an outer shape that approximates the shape of a water supply pipe. Furthermore, by using an inner pipe and an outer pipe instead of using something with a short life such as a diaphragm, it has a semi-permanent life.

Example Examples thereof will be described below with reference to the drawings.

In FIGS. 1 and 3, an inner pipe 4 having a water inlet 1 and an outlet 2 on the upper and lower sides and forming a flow passage 3 between the water inlet 1 and the outlet 2, and a gas chamber 5 on the outside of the flow passage 3. A small hole 7 is provided in the inner pipe 4 to communicate the gas chamber 5 with the flow path 3. In the figure, 8 and 9 fix the open end of the outer vibro, the inner pipe 4, and the inlet 1.
The upper and lower lids forming the outlet 2 have screw parts 8a and 9 for mounting.
It has a.

Next, the operation of the configuration of this embodiment will be explained.

First, during hot water supply, water flows from inlet 1 to outlet 2 as shown in Figure 1, but when hot water supply is stopped, the flow of water stops and the water pressure increases. A portion of the water entering through the small hole 7 due to the water pressure compresses the gas in the gas chamber 5.

Compressed gas decreases in volume. By doing so, it absorbs sudden increases in water pressure and prevents pressure shocks from affecting pipes and equipment. This will absorb water hammer sound.

FIG. 3 shows the water hammer sound absorber of the present invention attached to the water heater 10,
And the heat insulating material 11 is easily applied. That is, since the outer vibro and inner pipe 4 are straight, the heat insulating material 1
1 is easy to install.

Effects of the Invention As described above, the pipe of the present invention is used, and it is not only easy to attach it to a water heater, but also easy to perform insulation work around the attached pipe to prevent freezing. Furthermore, due to its structure, it has the advantage of being durable and semi-permanently effective.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing an embodiment of the water hammer sound absorber of the present invention, Fig. 2 is a longitudinal sectional view of a conventional example, and Fig. 3 is a longitudinal sectional view of an embodiment of the present invention actually installed in a water heater. It is a front view of an example of construction work. 1...Entrance, 2...Exit, 3...
...Flow path, 4...Inner pipe, butt...
Gas chamber, 6... Outer pipe, 7... Small hole. Name of agent: Patent attorney Shigetaka Awano (1 person) Figure 1/--Partial entrance 2--Tree exit 3--Kuji-ro 4--Ichi-nai-to-baifu. 5--At once 6N Sumire 1--Kutoi member II Baifu 7-Kotame

Claims (1)

[Claims] It has an inlet and an outlet for water at the top and bottom, and consists of an inner pipe that forms a flow path between these inlets and outlets, and an outer pipe that forms a gas chamber around the outer periphery of the flow path, and a small hole is provided in the inner pipe to form a gas chamber. A water hammer sound absorber with a gas chamber connected to the flow path.