JP2924173B2 - Water supply valve device - Google Patents

Description

The present invention relates to a water supply valve device, and more particularly to a water supply valve device having two or more output flow paths.

(Prior Art) In a toilet flush, a water supply valve device that separately supplies water to a rim and a jet nozzle at different times and flow rates in order to obtain high cleaning performance with a small amount of water supply has been conventionally known.

As shown in FIG. 5, for example, as shown in FIG. 5, a water supply valve device 100 is provided with a constant flow valve 102 for obtaining a predetermined discharge flow rate irrespective of the water supply pressure in a water supply pipe 101 for supplying flush water to a toilet bowl, and an electromagnetic valve having a water stopping function. There is a type in which a flow path switching valve 103 driven by a valve is interposed in this order, and each discharge port of the flow path switching valve 103 is connected to a rim and a jet nozzle of a toilet bowl, respectively.
Here, 104 is the flow path switching valve 1 based on the cleaning start input.
A control unit for performing the switching drive of 03, a power supply 105, and a cleaning start switch 106.

In the above configuration, when the control unit 104 receives the supply of power from the power supply 105 and operates the cleaning start switch 106, the flow path switching valve 10 is operated for a preset time in a preset order.
3 can be driven to supply a predetermined amount of water to the rim and the jet nozzle in a predetermined order.

(Problems to be Solved by the Invention) However, in the above-described conventional example, a control unit for driving the flow path switching valve in a preset order for a preset time is required, and the configuration is complicated.

An object of the present invention is to provide a water supply valve device that eliminates the need for a control unit that solves the above-described problems.

(Means for Solving the Problems) In order to solve the above problems, the water supply valve device according to the present invention is provided with two output channels communicating with the input channel, and the input channel and the first output channel. Between the first valve hole and
A second valve hole is respectively provided between the input flow path and the second output flow path, and the first valve hole is provided by a first diaphragm having a first bleed hole and a second valve hole. The holes are individually opened and closed by a second diaphragm having a second bleed hole to form first and second back pressure chambers on the back surface of each diaphragm, respectively. A water supply for connecting a pilot flow path for opening the pressure through a check valve to a pilot flow path for releasing the pressure of the second or first back pressure chamber, and opening and closing the output flow path of the pilot flow path with a pilot valve element A valve device, wherein the first and second bleed holes have the same sectional area, the first and second back pressure chambers have different volumes, and the pilot valve body is opened and closed by an electromagnetic valve. It is characterized by. Further, in order to solve the above problem, the water supply valve device according to the present invention is formed such that the volumes of the first and second back pressure chambers are equal and the cross sectional areas of the first and second bleed holes are different. In addition, the opening and closing of the pilot valve element is performed by a solenoid valve.

(Function) The water supply valve device according to the present invention has the same cross-sectional area of the bleed hole, the volume of the back pressure chamber is made different, and the rim and the jet nozzle are cleaned for a predetermined time and a predetermined flow rate by driving the solenoid valve. Supply water.

Further, the water supply valve device according to the present invention is characterized in that the back pressure chamber has the same volume, the bleed hole is formed with a different cross-sectional area, and the rim and the jet nozzle are driven by the solenoid valve to the rim and the jet nozzle for a predetermined time and a predetermined flow rate. Supply.

(Example) Hereinafter, an example of the present invention is described based on a drawing. First
FIG. 1 is a sectional view of a first embodiment of a water supply valve device according to the present invention.

In the water supply valve device 1, an input flow path 3 is formed on one side of a casing 2, and a first output flow path 4 and a second output flow path 2 are respectively connected to the input flow path 3 on a side perpendicular to the input flow path 3. Are formed in parallel at intervals.

A first valve hole 6 is formed between the input flow path 3 and the first output flow path 4 in the casing 3, and a valve seat 7 is formed at an upper opening peripheral edge of the first valve hole 6. I have. A first diaphragm 8 that opens and closes the first valve hole 6 is provided on the valve seat 7 so as to be able to freely come and go.

A first bleed hole 4 having a very small cross-sectional area as compared with the first output flow path 4 is formed in a peripheral portion of the first diaphragm 8. The back pressure chamber 10 and the input flow path 3 are communicated by the first bleed effect 9.

A second valve hole 11 is formed in the casing 2 between the input flow path 3 and the second output flow path 5 in a direction orthogonal to the second output flow path 5, and an upper end of the second valve hole 11 is formed. A valve seat 12 is formed on the periphery of the opening. On this valve seat 12, a second diaphragm 13 is provided so as to be able to freely contact and separate. In the back pressure chamber 16, a spring 14 is mounted, and a second diaphragm 13 is provided.
Is pressed against the second valve hole 11 to close it.

A second bleed hole 15 having the same cross-sectional area as that of the first bleed hole 9 is formed in a peripheral portion of the second diaphragm 14. The back pressure chamber 16 and the input flow path 3 communicate with each other through the second bleed hole 15. The volume of the back pressure chamber 16 is smaller than that of the back pressure chamber 10.

A pilot flow path 17 is provided above the back pressure chamber 16, and a pilot valve element 18 is attached to an upper end of the pilot flow path 17. The operation of the valve 20 opens and closes the pilot valve hole 19. Here, reference numeral 21 denotes a coil of the electromagnetic valve 20, and reference numeral 22 denotes a spring for urging the plunger 24 provided in the guide sleeve 23 in the direction of the pilot valve hole 19 below.

The upper part of the back pressure chamber 10 communicates with the pilot flow path 17 via a check valve 26 which is pressed downward by a spring 25 having a weak pressing force.

Next, the operation of the water supply valve device will be described. solenoid valve
When 20 is not energized, the plunger 24
The pilot valve element 18 urged by the pressing force of 22 closes the pilot valve hole 19 attached to the lower end of the plunger 24.
Therefore, the pressure of the fluid flowing from the input flow path 3 into the back pressure chamber 10 via the first bleed hole 9 causes the first diaphragm 8
Is pressed by the first valve hole 6, the first valve hole 6 is closed, and no fluid flows through the first output flow path. The pressure of the fluid flowing into the back pressure chamber 16 from the input flow path 3 through the second bleed hole 15 and the pressing force of the spring 14 cause the second diaphragm 13
Is pressed by the second valve hole 11, the second valve hole 11 closes, and no fluid flows into the second output flow path.

When a cleaning start switch (not shown) is operated and power is supplied from a power source (also not shown) and the solenoid valve 20 is energized, the plunger 24 is opposed to the spring 22 by a coil.
The pilot valve element 18 is separated from the pilot valve hole 19 by being sucked by 24. Therefore, the fluid flows out of the pilot valve hole 19 through the pilot flow path 17, and the internal pressure of the back pressure chamber 16 decreases,
The second valve hole 11 opens slowly against the spring 14,
The fluid gradually flows out to the second output channel 5.
At the same time, the pressure in the back pressure chamber 10 exceeds the pressure in the pilot flow path 17 and the check valve 26 is pushed open against the spring 25, and the fluid in the back pressure chamber 10 also flows through the pilot flow path 17 through the pilot valve hole. 19, the pressure in the back pressure chamber 10 becomes lower than the pressure flowing in from the input flow path 3. As a result, the first valve hole 6 is opened, and the fluid is also supplied to the first output flow path 4. Becomes outflow. At this time, as the spring 14 is stronger, the second diaphragm 13 opens more slowly than the first diaphragm 8, and the outflow amount gradually increases.

When the solenoid valve 20 is de-energized and the pilot valve hole 19 is closed, fluid flows from the bleed holes 9 and 15 into the back pressure chambers 10 and 16 and the pressure in the back pressure chambers 10 and 16 increases, so that the diaphragms 8 and 13 Are pressed by the valve seats 7 and 12, respectively, to close the valve holes 6 and 11. At this time, the cross-sectional areas of the bleed hole 9 and the bleed hole 15 are the same, but since the volume of the back pressure chamber 16 is smaller than the volume of the back pressure chamber 10, the pressure in the back pressure chamber 16 increases quickly, and The force by which 14 presses the diaphragm 13 is also applied, and the valve hole 11 closes in a shorter time than the valve hole 6. Then, as the volume of the back pressure chamber 10 increases, the first diaphragm 13 closes slowly and the outflow amount gradually decreases.

It should be noted that, even if the volume of the pilot flow path 17 is added to the volume of the back pressure chamber 16, the volume is naturally smaller than the volume of the back pressure chamber 10.
Further, the check valve 26 prevents the fluid in the back pressure chamber 16 or the pilot flow path 17 in which the internal pressure increases quickly from flowing into the back pressure chamber 10.

FIG. 2 shows that the first embodiment makes the cross-sectional area of each bleed hole equal and makes the volume of each back-pressure chamber different, so that the time difference until the pressure of each back-pressure chamber reaches a predetermined value. While the opening and closing times of the first valve hole and the second valve hole are switched to generate the same, the volume of each back pressure chamber is made equal and the cross-sectional area of each bleed hole is made different (second in the figure). The cross-sectional area of the bleed hole is made larger than the cross-sectional area of the first bleed hole.)

FIG. 3 shows an embodiment in which the configurations of the first embodiment and the second embodiment are appropriately combined to achieve the same operation. 2 and 3, the same parts as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted. In addition, the operation is the same, so that the description is omitted.

FIG. 4 is a time chart showing the relationship between the water supply time of the rim and the jet nozzle.

In this embodiment, the case where two of the rim and the jet nozzle are used as the output flow paths is shown. However, the present invention is not limited to this, and three output flow paths may be formed by combining diaphragms having further different characteristics in parallel. Of course.

(Effect of the Invention) According to the water supply valve device according to the present invention, the bleed holes are formed to have the same sectional area, the back pressure chambers are formed to have different volumes, and a time difference is generated until the back pressure chamber reaches a predetermined pressure. Accordingly, the rim and the jet nozzle can be supplied with the cleaning water at a predetermined flow rate for a predetermined time to the rim and the jet nozzle only by driving the electromagnetic valve without the control unit.

Further, according to the water supply valve device according to the present invention, since the back pressure chambers have the same volume and the bleed holes are formed with different cross-sectional areas, a time difference is generated until the back pressure chamber reaches a predetermined pressure. The cleaning water can be supplied to the rim and the jet nozzle at a predetermined flow rate for a predetermined time only by driving the solenoid valve without a control unit.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a first embodiment of a water supply valve device according to the present invention, FIG. 2 is a cross-sectional view of the second embodiment, FIG. 3 is a cross-sectional view of the third embodiment, FIG. 4 is a time chart showing the relationship between the water supply time of the rim and the jet nozzle, and FIG. 5 is a block diagram of a conventional water supply valve device. 1 ... water supply valve device, 2 ... casing, 3 ... input flow path, 4, 5 ... output flow path, 6, 11 ... valve hole, 7, 12 ... valve seat,
8,13… 1st diaphragm, 9,15… bleed hole, 1
0,16… Back pressure chamber, 14… Spring, 17… Pilot flow path, 18… Pilot valve body, 19… Pilot valve hole,
20 ... solenoid valve, 21 ... coil, 22 ... spring, 23 ...
… Guide sleeve, 24 …… plunger, 25 …… spring, 26 …… check valve.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shinji Shibata 2-8-1, Honmura, Chigasaki-shi, Kanagawa Prefecture Tochiki Kiki Co., Ltd. No. 1 Tochiki Kikai Co., Ltd. Chigasaki factory (56) References JP-A-2-256730 (JP, A) JP-A-2-178436 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , (DB name) F16K 31/12-31/42 E03D 5/10

Claims (2)

(57) [Claims] An output passage communicating with an input passage is provided, a first valve hole is provided between the input passage and the first output passage, and an input passage is connected to a second output passage. A second valve hole is provided between the second valve hole and the output flow path. The first valve hole is formed by a first diaphragm having a first bleed hole, and the second valve hole is formed by a second bleed hole. A pilot flow path that is individually opened and closed by a second diaphragm provided with the first and second back pressure chambers on the back surface of each of the diaphragms and releases the pressure of the first or second back pressure chamber. Second through check valve
Alternatively, a water supply valve device connected to a pilot flow passage for releasing the pressure of the first back pressure chamber and opening and closing the output flow passage of the pilot flow passage by a pilot valve element, wherein the first and second bleed holes are provided. A water supply valve device, wherein the first and second back pressure chambers are formed to have different volumes, and the pilot valve body is opened and closed by an electromagnetic valve. 2. An output channel communicating with an input channel, a first valve hole between the input channel and the first output channel, and an input channel and a second output channel. A second valve hole is provided between the second valve hole and the output flow path. The first valve hole is formed by a first diaphragm having a first bleed hole, and the second valve hole is formed by a second bleed hole. A pilot flow path that is individually opened and closed by a second diaphragm provided with the first and second back pressure chambers on the back surface of each of the diaphragms and releases the pressure of the first or second back pressure chamber. Second through check valve
Or a water supply valve device connected to a pilot flow passage for releasing the pressure of the first back pressure chamber and opening and closing an output flow passage of the pilot flow passage by a pilot valve element, wherein the first and second back pressures are A water supply valve device wherein the chambers have the same volume, the first and second bleed holes are formed with different cross-sectional areas, and the pilot valve body is opened and closed by an electromagnetic valve.