JP3500589B2 - Faucet with water hammer absorption function - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a faucet for connecting a device having a water shutoff valve such as a fully automatic washing machine or a dishwasher on the downstream side.

[0002]

2. Description of the Related Art Conventionally, a pipe joint having a simple connection port is attached to a discharge port of a hot and cold water mixing tap or a single tap of hot water or water, which is arranged at a position close to a fully automatic washing machine. A simple connection mouth joint of a water supply hose can be connected to the mouth, a fully automatic washing machine or the like is connected to this water tap, and water may be supplied to the fully automatic washing machine using this water tap.

FIG. 5 shows a state in which a fully automatic washing machine is connected to a conventional faucet. In FIG. 5, reference numeral 2 denotes a fully automatic washing machine. This fully automatic washing machine 2 has a water supply hose 2a and a simple connection port joint 2b attached to the tip of the water supply hose 2a.
The simple connection port joint 2b can be connected to the single faucet 8 provided on the wall surface.

Therefore, after connecting the water supply hose of the washing machine 2 to the single faucet 8, the single faucet 8 is opened and the start button 2c of the washing machine 2 is pressed to make the washing machine 2
The water supply to the machine is controlled by a water shutoff valve such as a solenoid valve built in the washing machine 2, and washing can be performed fully automatically.

[0005]

However, when the water is stopped by this solenoid valve or the like, the flow of water is suddenly stopped, so that the pressure of the water flowing in the pipe 9 in the wall rises sharply. A fire may occur. Such a water hammer may produce an abnormal impact sound and may have other adverse effects such as damage to other equipment or piping connected to the same piping 9.

In order to prevent the adverse effect of the water hammer, the pipe 9 to the faucet 8 which is expected to be connected to the washing machine 2
A method of previously connecting the water hammer absorber 9a in the middle of the above is considered. However, when this method is applied to the existing pipe 9 to which the water hammer absorber 9a is not attached, the wall surface is stripped off and the water hammer absorber 9a is inserted between the pipes 9, and then the wall surface is restored. It required large-scale construction to do.

Even if the pipe 9 is installed in the air without being buried in the wall surface, in order to connect the water hammer absorber 9a, the pipe 9 is cut and the water hammer absorber 9a is cut off. Not only the extremely complicated work of feeding the water between the pipes 9 had to be performed, but also the appearance of the portion to which the water hammer absorber 9a was connected was not good. Further, also when inspecting or replacing the water hammer absorber 9a, it is necessary to carry out similarly complicated construction, which imposes a heavy burden on the operator.

The present invention has been made in consideration of the above points, and has a structure that is extremely simple and inexpensive, and is not only easy to install and easy to perform maintenance work, but also has a good-looking water hammer. It is intended to provide a faucet with an absorption function.

[0009]

That is, according to the present invention,
A faucet that discharges hot water or water that connects a device having a water stop valve on the downstream side, and a chamber that is a part of a water channel is provided in the faucet upstream of the water stop mechanism of the faucet. The water hammer absorber mounting portion is formed in the chamber, the cylinder communicating the opening of the bottom portion to the chamber forming a part of the water passage, the piston slidably and watertightly fitted in the cylinder, and the piston. The opening
A coil spring which urges the parts, a plug forming a closed space is screwed to the open end of the cylinder holds the other end of the coil spring, the cylinder, the piston, the closing is formed by the plug It is characterized in that a water hammer absorber comprising a solid or a liquid or both of which is inserted into the space and fills the dead space in the closed space is attached to the mounting portion. Further, a simple connection port may be formed at the water discharge port of the faucet.

[0010]

[0011]

In the above invention, a chamber which becomes a part of the water channel is provided in the faucet for connecting the device having the water shutoff valve on the downstream side, and the mounting portion of the water hammer absorber is formed in this chamber. Even if a water hammer occurs due to abrupt water shutoff by the water shutoff valve connected to the side, the water hammer can be absorbed by the water hammer absorber attached to the chamber inside the faucet.

Further, since the water hammer absorber can be attached only by performing a simple operation that can be done by anyone by replacing the existing water tap and attaching this water hammer with a water hammer absorbing function,
Since it is not necessary to perform a complicated construction of providing a space for installing the water hammer absorber in the middle of the pipe connecting the faucet, not only the installation is easy, but also the design is improved. In addition, since the water hammer absorber is attached to the faucet, maintenance such as replacement of the water hammer absorber can be performed very easily. Furthermore, since the chamber is provided on the upstream side of the water stop mechanism in the faucet, the handle of the faucet and the water outlet can be brought close to each other, and the water hammer absorber does not disturb the handle operation.

When a simple connection port is formed at the water discharge port of the water faucet, it is not necessary to connect a separate simple connection port to the water discharge port of the water faucet absorption function faucet, and a simple connection port joint is formed. This makes it possible to connect the pipe and equipment connected to this pipe to the downstream side very easily.

[0014]

[0015]

[0016]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show the construction of a water faucet with a water hammer absorbing function according to a first embodiment of the present invention, and FIG. 1 is a longitudinal sectional view showing the water faucet with a water hammer absorbing function and its connection state, FIG. FIG. 3 is a vertical sectional view of a faucet with a water hammer absorbing function, and FIG. 3 is a vertical sectional view showing a state where the water hammer absorbing function of the faucet with a water hammer absorbing function operates. 1 to 3, reference numeral 1 is a single faucet (hereinafter, simply referred to as faucet 1) which is an example of a faucet with a water hammer absorption function,
A simple connection port joint 2 is provided at a discharge port 11 of the faucet 1 described later.
The fully automatic washing machine 2 is connected via b and the water supply hose 2a.

As shown in FIGS. 2 and 3, the faucet 1 has a partition wall 10a provided in the faucet body 10 so that the inflow port 1a and the water hammer absorber mounting chamber 3 are provided in the faucet body 10. An intermediate chamber 1b and an outflow port 1c are formed, and a discharge port 11 is rotatably attached to the outflow port 1c, and a simple connection port 11a is formed at an end of the discharge port 11. That is, the inflow port 1a, the water hammer absorber mounting chamber 3, the intermediate chamber 1b, and the outflow port 1c form a water channel in the faucet body 10.

A flow rate adjusting valve 4 is formed at a communication portion 10b between the inlet 1a and the water hammer absorber mounting chamber 3, and the flow rate adjusting valve 4 is a valve body 4a which abuts on the communication portion 10b.
And a water pressure adjusting jig 4 that adjusts the water pressure by adjusting the pressing force of a spring that is screwed into the faucet body 10 and abuts against the valve body 4a.
b and a flow rate regulating jig 4c which is screwed into the water pressure adjusting jig 4b to regulate the flow rate.

Further, a water stop mechanism 5 is formed in a communication portion 10c between the intermediate chamber 1b and the outlet 1c. The water stop mechanism 5 is a valve body 5a which abuts against the communication portion 10c, and this valve. A valve shaft 5b that holds the body 5a and is screwed into the faucet body 10.
And a handle 5c for rotating the valve shaft 5b.

The water hammer absorber mounting chamber 3 communicates with the inflow port 1c by the communication portion 10b, and also the communication portion 1
0d communicates with the intermediate chamber 1b. That is, the water hammer absorber mounting chamber 3 is a part of the water channel on the upstream side of the water stop mechanism 5. In addition, the water hammer absorber mounting chamber 3 is formed with a water hammer absorber mounting portion 3a having a substantially cylindrical shape with an internal thread provided on the inner peripheral surface thereof, and the water hammer absorber mounting portion 3a having a substantially cylindrical shape. The water hammer absorber 6 described later is screwed.

Various types of water hammer absorbers 6 can be used, but this embodiment has the following configuration. That is, the water hammer absorber 6 of this embodiment has a cylindrical container-shaped cylinder 6b having an opening 6a at the bottom, and a piston 6c having a substantially U-shaped cross section which is slidably and watertightly fitted into the cylinder 6b. A coil spring 6d for urging the piston 6c toward the opening 6a, the other end of the coil spring 6d being held, and the cylinder 6
A plug 6 that is screwed into the open end of b to form a closed space 6e
f and the closed space 6e formed by the cylinder 6b, the piston 6c, and the plug 6f.
It consists of 6 g of a solid cylinder that fills the dead space inside.

A male screw is formed on the outer circumference of the water hammer absorber 6, and the water hammer absorber 6 is screwed and connected to the water hammer absorber mounting portion 3a to open the water hammer absorber 6. The portion 6a can be connected to the water hammer absorber mounting chamber 3 so as to communicate therewith.

Therefore, by connecting the water hammer absorber 6 to the water hammer absorber mounting chamber 3, the water flow is rapidly closed by the electromagnetic valve built in the fully automatic washing machine 2 on the downstream side of the faucet 1. However, the water hammer produced by this can be absorbed by the water hammer absorber 6, and the water hammer does not affect the upstream side of the water hammer absorber 6.

Next, the operation of the water hammer absorber 6 attached to the faucet 1 will be described. In the water hammer absorber 6, water supply pressure is applied to the water hammer absorber mounting chamber 3 when the water stop mechanism 5 is closed, so that the water supply pressure acts on the pressure receiving surface of the piston 6c.
The piston 6c is pushed back and stops at a position where the water supply pressure and the biasing force of the coil spring 6d are balanced. And
When the water shut-off mechanism 5 is opened, the pressure in the water hammer absorber mounting chamber 3 is reduced and the piston 6c is urged to a position where it abuts against the opening 6a.

The water hammer absorber mounting portion 3a mounts the water hammer absorber 6 so that the opening 6a faces the communicating portion 10d. Therefore, when the water shut-off valve of the fully automatic washing machine 2 (see FIG. 1) connected to the downstream side of the faucet 1 is suddenly closed with the water shut-off mechanism 5 being opened, this is caused. The water hammer efficiently hits the pressure receiving surface of the piston 6c through the opening 6a, and the piston 6c
Receives a water hammer and is pushed back to absorb the water hammer as shown in FIG. That is, the water hammer generated on the downstream side of the faucet 1 is efficiently absorbed by the water hammer absorber 6.

In this embodiment, the cylinder 6 is inserted by inserting a solid column 6g into the water hammer absorber 6.
Since the volume of the closed space 6e closed by b, the piston 6c, and the plug 6f is changed greatly as the piston 6c slides, the water hammer absorber 6 can be adapted to a larger water pressure. However, the liquid may be enclosed in the closed space 6e instead of the solid 6g, or both the solid and the liquid may be enclosed.

The present invention is not limited to a single faucet, but may be a hot and cold water mixing faucet as shown in FIG.
FIG. 4 is a perspective view showing a second embodiment of the present invention. In this figure, the members denoted by the same reference numerals as those in FIGS. 1 to 3 are the same or equivalent members, and thus detailed description thereof will be omitted. .

In FIG. 4, reference numeral 7 is a hot and cold water mixing tap (hereinafter, simply referred to as a water tap), and a tap main body 70 of the tap 7 is provided with hot and cold water supply ports 71a and 71b and a hot and cold water stopping mechanism. Handles 72a and 72b to be operated and a discharge port 71c for discharging mixed hot and cold water are provided. A hot and cold water mixing chamber (not shown) that forms a water channel is provided on the downstream side of the water stopping mechanism, and the water hammer absorber 6 is attached to the hot and cold water mixing chamber.

Therefore, the water hammer generated on the downstream side of the faucet 7 can be absorbed by one water hammer absorber 6, and the influence of this water hammer does not reach both pipes of hot and cold water. That is, it is possible to reduce the manufacturing cost of the faucet 7 with the water hammer absorbing function and improve the design at once.

In each of the above-mentioned embodiments, the case where the fully automatic washing machine 2 is connected to the downstream side of the faucets 1 and 7 is shown as an example, but the present invention is not limited to this. It goes without saying that it can also be used when connecting a dishwasher or a water purifier.

[0031]

As described above, the faucet with a water hammer absorbing function according to the present invention is a faucet for discharging hot water or water for connecting a device having a water shutoff valve on the downstream side. A chamber that will be part of the water channel is provided upstream of the water stop mechanism of the faucet inside, and a mounting portion for the water hammer absorber is formed in this chamber. A cylinder that communicates with the chamber, a piston that is slidably and watertightly fitted in the cylinder, a coil spring that biases the piston toward the opening , and the other end of the coil spring that holds the coil spring. A plug that is screwed into the open end of the cylinder to form a closed space, and a solid or liquid or both that is inserted into the closed space formed by the cylinder, piston, and plug to fill the dead space in the closed space. A water hammer By attaching the water vessel to this mounting part, even if sudden water stoppage occurs in the equipment connected to the downstream side, the water hammer absorber installed in the chamber inside the faucet effectively prevents the occurrence of water hammer. It can be prevented.

Further, since the water hammer absorber can be attached only by performing a simple operation that can be performed by anyone by simply replacing the existing water tap and attaching the water hammer with the water hammer absorbing function,
There is no need to provide a space for installing a water hammer absorber in the middle of the pipe connecting this faucet, and since there is no need to make any work on the pipe, not only is the installation easy,
The design is also improved. In addition, maintenance such as replacement of the water hammer absorber can be performed very easily.

In particular, since the chamber is provided on the upstream side of the water stop mechanism in the faucet, the handle of the faucet and the water outlet can be brought close to each other, and the water hammer absorber can interfere with the operation of the handle. Absent.

When a simple connection port is formed at the water discharge port of the water faucet, it is not necessary to connect a separate simple connection port to the water discharge port of the water hammer absorption function faucet, and a simple connection port joint is formed. Can be connected very easily.

As shown in the above embodiment, the faucet is a hot and cold water mixing tap for appropriately mixing hot water and water and discharging it.
When the chamber is provided on the downstream side of the water stop mechanism in the hot and cold water mixing tap, it is possible to absorb the water hammer in both hot and cold water pipes by one water hammer absorber, and to reduce the production cost of the tap. It is possible to improve the design.

[Brief description of drawings]

FIG. 1 is a perspective view showing a water faucet with a water hammer absorbing function according to a first embodiment of the present invention and a connection state thereof.

FIG. 2 is a vertical sectional view of the water faucet with a water hammer absorbing function.

FIG. 3 is a vertical cross-sectional view showing a state where the water hammer absorption function of the water faucet with the water hammer absorption function has worked.

FIG. 4 is a perspective view showing a hot and cold water mixing stopper with a water hammer absorbing function according to a second embodiment of the present invention and a connection state thereof.

FIG. 5 is a partially transparent side view showing a conventional faucet and its connection state.

[Explanation of symbols]

1, 7 ... Faucet, 2 ... Equipment, 3 ... Chamber, 3b ... Mounting part, 11
a ... Simple connection port.

Claims (2)

(57) [Claims] 1. A faucet for discharging hot water or water for connecting a device having a water shutoff valve on the downstream side, and forming a part of a water channel in the faucet upstream of a water stop mechanism of the faucet. A chamber is provided, a mounting portion for the water hammer absorber is formed in the chamber, and a cylinder that communicates an opening at the bottom with a chamber that is a part of the water channel, and a piston that is slidably and watertightly fitted in the cylinder When the coil spring urges the piston in the opening, and the plug to form a closed space is screwed to the open end of the cylinder holds the other end of the coil spring, the cylinder, the piston , A water hammer absorber comprising a solid or a liquid or both inserted into the closed space formed by the plug to fill the dead space in the closed space is attached to this mounting part With water hammer absorption function Water faucet. 2. The water faucet with a water hammer absorption function according to claim 1, wherein a simple connection port is formed at the water discharge port of the water faucet.