JPH034096A - Water hammer preventing device and faucet using same - Google Patents

Abstract

PURPOSE:To prevent a water hammer with a simplified structure by providing a fluid supply port and a delivery pipe line, whose one end is connected to a faucet, in a closed vessel for accumulating gas and constituting a fluid bypass pipe between the fluid supply port and the delivery pipe line. CONSTITUTION:When water is supplied by opening a faucet provided in a delivery pipe 5, the inside of a supply water pipe 7, bypass pipe 9 and the delivery pipe 5 is filled with water, but the total volume of a closed vessel 1 is prevented from being filled with water because air is accumulated in upper part space H in the closed vessel 1. In the case of fully closing the faucet, a pressure of water hammer is transmitted to residual water A in the closed vessel 1, and the water hammer is relaxed by compressing the residual air in the space H. Accordingly, no water hammer is propagated to the supply water pipe 7, and generation of vibration and shock noise in a piping system can be prevented. A water hammer-preventing device inexpensive with a simplified structure can be set up in each faucet in a mansion and a hole or the like.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a water hammer preventer that prevents water hammer from occurring when a faucet for water supply or hot water supply is suddenly closed. More specifically, it is suitable for use in preventing water hammer when shutting off one-touch faucets that are often used in mansions, hotels, and the like.

[Prior Art] The water hammer appears as an impact sound or vibration of piping when the water supply or hot water supply is suddenly shut off, and this phenomenon is widely known among those skilled in the art. In order to prevent or reduce the occurrence of water hammer, various types of water hammer preventers such as bellows type, air bag type, and piston type have been proposed. It is attached to the pipe of the section. Regarding the structure of the water hammer preventer and its installation, please refer to "Practical knowledge of water supply, drainage and sanitary equipment J.
(Revised 3rd edition) (published March 10, 1986, published by Ohmsha Co., Ltd., page 16), an example is disclosed.

However, according to the study conducted by the present inventor, it has become clear that the conventional water hammer preventer has various problems as described below.

The first problem is that the conventional water hammer preventer has a complicated structure, which results in high production costs and high product prices.

The second is because it is installed at the end of the first line at the water supply (hot water) point, so it may or may not work effectively against water hammer when the faucet is suddenly closed. It is a lack.

Thirdly, in order to solve the second problem mentioned above, installing water hammer preventers at all water supply (hot water) points would be costly and would make it difficult to secure the space required for installation. .

On the other hand, in condominiums, hotels, etc., one-touch faucets are often used because they are easy to use and have an excellent design. A one-touch faucet is configured such that water supply or hot water supply can be easily started and closed simply by reciprocating an operating lever in a predetermined direction.

Furthermore, the water supply or hot water supply is started and closed suddenly, rather than gradually as in conventional faucet-type water faucets, so water hammer is likely to occur when the faucet is closed. However, due to the various problems described above, it has been difficult to install water hammer preventers in a large number of one-touch faucets.

The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a water hammer preventer that can reliably prevent water hammer, has a simple structure, and can be manufactured at low cost, and a water hammer preventer that can be manufactured at low cost. The goal is to provide used faucets.

[Means for Solving the Problems] The object of the present invention is to store a fluid such as water or hot water and a gas such as air in a closed container, and to transmit water hammer to the fluid when the faucet is closed. This is achieved by providing a conduit.

[Function] According to the water hammer preventer configured as described above, the water hammer generated when the faucet is closed is transmitted to the fluid in the sealed container via the pipe line, and the impact is transmitted to the fluid in the sealed container. It is relieved by the gas stored in the

Therefore, by installing the water hammer preventer having the above structure integrally with or near the one-touch faucet, water hammer can be reliably prevented near the faucet when the faucet is closed. In addition, since the water hammer preventer has an extremely simple structure in which fluid and air are stored in a sealed container, production costs can be reduced and miniaturization is possible, and installation can save time and space. can be achieved.

[Embodiment] Hereinafter, an embodiment of a water hammer preventer to which the present invention is applied will be described with reference to the drawings. Furthermore, Figure 1 is a sectional view showing the basic structure of the water hammer preventer, Figures 2 and 3 are characteristic diagrams that compare and explain the water hammer prevention effect, and Figure 4 shows integration with a one-touch faucet. It is a structural diagram.

The airtight container l has a body 2 made of a cylindrical body, an upper lid 3 and a bottom I.
4 are welded together. The discharge pipe 5 is connected to the upper lid 3
A water faucet (not shown) is connected to the upper tip protruding from the upper M3 by welding so as to pass through the upper M3. Further, the lower tip of the discharge pipe 5 is positioned so as to face the vicinity of the water supply port 6 provided at the lower inside of the closed container 1.

On the other hand, a plurality of water supply ports 6 are formed in the lower part of the closed container 1, a water supply pipe 7 is connected to one of the water supply ports 6, and the empty water supply port 6 is sealed with a plug 8. The water supply pipe 7 and the discharge pipe 5 are connected by a side pipe 9,
Water or hot water corresponding to the fluid in the present invention is supplied to the faucet, and one end of the water supply port 6 is connected to the closed container l.
It stores fluid inside.

Further, a water draining cock 10 is disposed approximately at the center of the bottom I4, and is configured to discharge the fluid A in the closed container l as necessary and store the consumed air in the air chamber. has been done.

Next, the operation during fluid supply, in other words, during water supply or hot water supply, will be explained. Water or hot water is supplied to the water supply pipe 7 as shown by arrow B from a water supply facility or a hot water supply facility (not shown). In this embodiment, the same effect is performed whether it is water supply or hot water supply, so water supply will be used hereinafter.

When water is supplied, the water supply pipe 7, side pipe 9, and discharge pipe 5 are filled with water. However, since air is stored in the upper space H in the closed space if, in other words, it is filled, the entire inside of the closed container 1 is not filled with water. Therefore,
By opening a faucet (not shown), water is supplied through the water supply pipe 7, side pipe 9, and discharge pipe 5.

On the other hand, if you close the faucet, in other words, shut it off,
The water hammer pressure is transmitted to the residual water A in the closed container I, and the residual air in the space H is compressed to alleviate the water hammer. Therefore, water hammer does not propagate to the piping system (the water supply pipe 7 in this embodiment), and vibration and impact noise in the piping system can be prevented.

Next, the water hammer mitigation effect will be compared and explained with reference to FIGS. 2 and 3.

Figure 2 (A) shows a pipe with a diameter of 15 mm without installing a water hammer preventer.
It shows the water hammer pressure when water is supplied to the water supply pipe A at a flow rate of 61/min, and the water hammer pressure reaches a high level of 8 kgf/cm2 at maximum.

On the other hand, when a water hammer preventer with the above structure is installed under the same conditions as described above regarding the pipe diameter, etc., the maximum pressure is 1.8 kgf/cm'' as shown in Figure 2 (B), which is approximately 1/4 eased.

Figure 3 (A) shows a pipe with a diameter of 15 mm without installing a water hammer preventer.
This shows the water hammer pressure when water is supplied to the water supply pipe A at a flow rate of 1717 m1n, and the maximum water hammer pressure is 23 kg f
It has reached a high level of /cm2.

On the other hand, when a water hammer preventer with the above structure is installed under the same conditions as above regarding the pipe diameter, etc., the maximum water hammer resistance remains at 13 kgf/cm'' as shown in Figure 3 (B), which is approximately 1/2. Thus, although the water hammer preventer of the present invention has an extremely simple structure as described above, it is capable of reliably alleviating water hammer when the faucet is suddenly closed. can.

Next, a one-touch faucet incorporating the water hammer preventer will be described with reference to FIG. 4.

The one-touch faucet 11 includes an operating lever 12, a faucet 13, a water supply pipe 14, a hot water supply pipe 15, a joint 16 for connecting the water supply pipe 14 and the hot water supply pipe 15 to the discharge pipe 5, and a threaded portion 17 for mounting. has been done.

The water hammer preventer 1 is provided in two systems, a water supply route and a hot water supply route, and water is supplied to one of the water hammer preventers 1 from a water supply source (not shown) via a pipe 18 and a joint 20. or,
The other water hammer preventer 1 is supplied with hot water via a pipe 19 and a joint 20 from a hot water source (not shown).

According to the one-touch faucet 11 configured as described above, the operation lever 1
When the faucet is opened by the operation in step 2, the faucet I is opened via the side pipe 9.
Water, hot water, or hot water mixed at an appropriate temperature is discharged from 3.

When water supply or hot water supply is abruptly shut off by the operation lever 12, each water hammer preventer 1 operates in the same manner as described above to relieve the water hammer pressure. As a result, there is no transmission of vibration or impact noise from the pipes 18, 19, and water hammer is prevented.

Although the present invention has been described in detail above, the present invention is not limited to the above, and various modifications are possible.

For example, the closed container 2 may be formed into a rectangular shape other than the cylindrical shape, or may be spherical. The shape, size, etc. of the closed container can be changed according to the location and space where the faucet and water hammer preventer are installed.

Further, the water hammer preventer is not only used in hotels and apartments, but can also be widely used in factories and the like where transmission of water hammer is discouraged.

[Effects of the Invention] As explained above, the water hammer preventer according to the present invention stores fluid such as water or hot water and air in a closed container, and prevents water hammer when the faucet is closed. The air is transmitted into the container and is relaxed by the air.

Therefore, according to the water hammer preventer having the above structure and the faucet that is integrally provided with the water hammer preventer, it is possible to alleviate water hammer in the vicinity of the faucet when the faucet is suddenly closed. Vibration transmission and impact noise caused by the piping system can be prevented.

In addition, since the structure is simple, it can be provided at low cost, and it can be installed at each faucet in apartments, hotels, etc., so water hammer can be prevented reliably at low cost.

[Brief explanation of drawings]

Figure 1 is a sectional view of a water hammer preventer showing an embodiment of the present invention, Figure 2 is a characteristic diagram showing a comparative example of water hammer prevention action, and Figure 3 is another comparative example of water hammer prevention action. Figure 4 is a structural diagram of a one-touch faucet with an integrated water hammer preventer. A: Reservoir water H: Air reservoir code 1 in the diagram: Water hammer preventer 2: Body 3: Top lid 4: Bottom lid 5: Discharge pipe 6: Water supply port A: Water supply pipe 9: Side channel pipe 11: One touch Faucet 12: Operation lever 13: Faucet diagram (B) Figure 3 (A) (B) Figure

Claims (2)

[Claims] (1) A closed container that stores a desired amount of fluid as well as a gas for shock absorption, a fluid supply port to which a pipe for supplying fluid into the closed container is connected, and one end of which is a faucet. a discharge pipe whose other end is connected to the airtight container and which transmits water hammer to the stored fluid and gas when the faucet is closed; and a pipe which supplies the fluid and which transmits the water hammer. A water hammer preventer consisting of a discharge pipe and a pipe constituting a fluid side passage. (2) A faucet using a water hammer preventer, which is provided with a valve mechanism that opens and closes the fluid path with one touch at one end of the pipe that transmits the water hammer.