JP2002220865A - Cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric flash valve for new installation or replacement with an existing one, and to restrain power consumption of a driving part by simplifying the structure of a valve main body and using the flash valve main body. SOLUTION: In this cleaning device, a piston valve is provided with a water passage connecting a pressure chamber of the piston valve to a secondary side drain passage. A pilot valve seat part for opening and closing the water passage and a valve driving means for opening and closing the pilot valve seat are provided on the pressure chamber side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply apparatus for automatically and manually sensing water, and more particularly to an electric flush valve for a urinal or urinal.

[0002]

2. Description of the Related Art In the prior art, as shown in FIG. 12, a water passage connecting a pressure chamber of a piston valve and a secondary drainage passage is provided on a valve body side. In another prior art, as shown in FIG. 13, a water passage connecting a piston valve pressure chamber and a secondary drainage passage is provided in a piston valve body, and a pilot valve seat for opening and closing this water passage, and the pilot valve seat are provided. The valve driving means for opening and closing the valve is provided on the secondary drainage side.

[0003]

In the prior art, a water passage connecting the pressure chamber of the piston valve and the secondary drainage passage is provided on the valve body side. In this case, the structure of the valve body was complicated, and it was difficult to manufacture the valve. Further, when replacing the existing flash valve with an automatic type, the existing valve body cannot be used, and the existing valve body has to be discarded, which is wasteful.

In another prior art, a water passage is provided in the piston valve body to connect the piston valve pressure chamber and the secondary drain passage, and a pilot valve seat for opening and closing the water passage and the pilot valve seat for opening and closing the pilot valve seat. Valve driving means was provided on the secondary drainage channel side. In this case, the opening and closing of the pilot valve seat has a structure in which the valve seat is pushed up by the rod on the secondary water distribution channel side, and it is necessary to make the pilot valve seat diameter larger than the diameter of the rod. When the valve seat diameter was large, the pressure receiving area was large, the operating force of the drive unit was large, and the power consumption was large. The present invention has been made to solve the above problems, and an object of the present invention is to provide an electric flash valve for new installation or replacement of an existing flash valve using a flash valve main body by simplifying the structure of the valve main body. In addition, the power consumption of the driving unit may be reduced.

[0005]

To achieve the above object, a piston valve is provided with a water passage connecting the piston valve pressure chamber and the secondary drainage passage, and a pilot valve seat for opening and closing the water passage. And a valve driving means for opening and closing the pilot valve seat on the pressure chamber side. This eliminates the need for a water passage connecting the pressure chamber and the secondary drainage passage in the valve body. Further, since the valve seat is not pushed up from the secondary side, it is not necessary to take an unnecessarily large diameter, the pressure receiving area of the valve seat portion is reduced, and the power consumption of the driving portion can be suppressed. Therefore, it is possible to provide an electric flash valve for new installation or replacement of an existing one using the flash valve body.

According to a second aspect, a solenoid is used for the valve driving means. When the solenoid is energized, the plunger is lifted, and at the same time, the seat of the piston valve is opened, the pressure in the piston valve pressure chamber is reduced, water flows out to the secondary drainage passage, and the piston valve rises to perform toilet flushing. When the energization of the solenoid is stopped, the seat of the piston valve closes, and the primary side and the piston valve pressure chamber have the same pressure, water on the primary side flows into the piston valve pressure chamber from the small hole, and the piston valve closes.

According to a third aspect, a linear solenoid is used for the valve driving means. When the linear solenoid is raised, the plunger is lifted, and at the same time, the seat of the piston valve is opened, the pressure in the piston valve pressure chamber is reduced, and water flows out to the secondary drain, and the piston valve rises to flush the toilet. I do. When the plunger is stopped at a predetermined position, the seat of the piston valve is closed at the predetermined position, the primary side and the piston valve pressure chamber have the same pressure, and the piston valve also stops at this position. In this state, water on the primary side flows into the piston valve pressure chamber from the small hole of the piston valve, and the piston valve attempts to descend. At the same time, the seat of the piston valve opens, and the pressure in the piston valve pressure chamber decreases. As the water flows out to the secondary drain, the piston again rises to a predetermined position. Thus, when the linear solenoid is stopped at a predetermined position, the piston valve stops at that position. When the linear solenoid is lowered, the seat of the piston valve closes, the pressure in the piston valve pressure chamber and the primary side become the same, water on the primary side flows into the piston valve pressure chamber from the small hole, and the piston valve closes. The stroke of the piston valve is adjusted by adjusting the stroke of the linear solenoid, and the flow rate can be adjusted.

According to a fourth aspect of the present invention, a diaphragm valve is provided on a seat portion of the piston valve, and a solenoid is used for the valve driving means. When the solenoid is energized, the plunger is lifted, the pilot hole of the diaphragm valve is opened, the pressure in the pressure chamber of the diaphragm valve is reduced, and water flows out to the secondary drainage passage. At the same time, the diaphragm valve seat opens and the piston opens. As the water in the valve pressure chamber flows out to the secondary drain, the piston valve rises to clean the toilet. When the solenoid is de-energized, the plunger lowers and the pilot hole in the diaphragm valve closes. The pressure in the diaphragm pressure chamber and the piston valve pressure chamber become equal, water in the piston valve pressure chamber flows into the diaphragm pressure chamber through a small hole in the diaphragm, and the seat of the diaphragm valve closes. Further, when the seat of the diaphragm valve is closed, the primary side and the piston valve pressure chamber have the same pressure, water on the primary side flows into the piston valve pressure chamber from the small hole of the piston valve, and the piston valve is closed.
If a diaphragm valve is not used for the seat part of the piston valve, if the seat diameter is reduced to save power in the drive unit, when the piston valve rises, water in the pressure chamber will flow through the narrow seat to the secondary drain, The drainage of the pressure chamber becomes worse, and the rising speed becomes slower. Since it is preferable that the rising speed of the piston valve is faster in order to wash the toilet, the seat diameter cannot be reduced unnecessarily. If a diaphragm valve is used for the seat portion of the piston valve, the water in the piston valve pressure chamber is discharged to the secondary drainage channel at the diaphragm seat portion. Therefore, even if the pilot hole diameter is reduced, the piston valve rises. Don't be late. Therefore, the suction force of the solenoid was reduced, and power was saved.

According to a fifth aspect of the present invention, a diaphragm valve is provided in a seat portion of the piston valve, and a latching solenoid is used as a valve driving means. When an open signal is sent to the latching solenoid, the plunger is lifted, and at the same time, the pilot hole of the diaphragm valve is opened, the pressure in the pressure chamber of the diaphragm valve is reduced, and water flows out to the secondary drainage. The sheet opens. Further, the water in the piston valve pressure chamber flows out to the secondary drainage passage, and at the same time, the piston valve rises to clean the toilet. When a closing signal is given to the latching solenoid, the plunger lowers, the pilot hole of the diaphragm valve closes, the diaphragm pressure chamber and the piston valve pressure chamber become the same pressure, and water in the piston valve pressure chamber flows from the diaphragm small hole to the diaphragm pressure chamber. Flows in and the diaphragm valve closes.
Further, when the seat of the diaphragm valve is closed, the primary side and the piston valve pressure chamber have the same pressure, water on the primary side flows into the piston valve pressure chamber from the small piston valve hole, and the piston valve is closed. If a diaphragm valve is used for the seat portion of the piston valve, the water in the piston valve pressure chamber is discharged to the secondary drainage channel at the diaphragm seat portion. Therefore, even if the pilot hole diameter is reduced, the piston valve rises. Don't be late. Therefore, the suction force of the solenoid is reduced. Furthermore, it is a latching solenoid, which consumes electricity when lifting the plunger, but when lifted, the attractive force of the movable magnet is greater than the force of the spring, so the plunger is held above and when closed, the magnet is Close the plunger with the power of electricity that exceeds power. Therefore, further power saving was achieved because of the mechanism that consumes electricity only when opening and closing.

A sixth aspect of the present invention is a latching solenoid, which consumes electricity when lifting the plunger.
In the raised state, the plunger is held upward because the attractive force of the movable magnet exceeds the force of the spring. Also at the time of closing, the holding force of the movable magnet is reduced by the repulsive force of the magnet and the force of the spring prevails, closing the plunger. Therefore, further power saving was achieved because of the mechanism that consumes electricity only when it is opened.

According to a seventh aspect of the present invention, the diaphragm valve has a structure in which the cone portion is extended to the secondary side, and the cone portion is pushed by a manual lever portion of the flash valve to pry open the diaphragm by the principle of leverage. Pressing the manual lever opens the diaphragm valve seat on the principle of leverage. When the seat of the diaphragm valve is opened, the pressure in the piston valve pressure chamber decreases, water flows out to the secondary water distribution passage, and the piston valve rises to perform toilet flushing. When the manual lever is stopped, the pressure in the diaphragm pressure chamber and the pressure in the piston valve chamber become equal, water in the piston valve pressure chamber flows into the diaphragm pressure chamber from the small diaphragm hole, and the diaphragm valve closes. Furthermore, when the seat of the diaphragm valve is closed, the primary side and the piston valve pressure chamber have the same pressure, and the piston valve small hole becomes
The water on the next side flows into the piston valve pressure chamber, and the piston valve closes. This structure enables manual operation using the flash valve body.

[0012]

1 to 4 show sectional views of a first embodiment of the present invention. In this structure, the valve driving means is a solenoid. The main body 1 is provided with a piston valve 2. The piston valve 2 has a small hole 3 connecting a primary water passage 21 and a pressure chamber 22, a water passage 4 connecting the pressure chamber 22 and a secondary drain passage 23, and a pressure chamber 22. There is a sheet 5 for opening and closing the secondary drainage channel 23. The plunger 8 is moved up and down by an electromagnetic valve (solenoid) 7 fixed to the lid 6 so that the seat 5
Open and close. The drive of the solenoid valve 7 is controlled by a control circuit 41 based on an input of an electric switch 40.

FIG. 1 shows a state in which the plunger 8 is lowered.
The closed state in which the seat 5 is closed is shown.

FIG. 2 shows that when the plunger 8 is raised by the solenoid valve 7, the seat 5 is opened, and the pressure chamber 22 is connected to the secondary drain passage 2.
3 (P2 = P3), and the primary pressure P1 becomes higher than the pressure P2 of the piston valve pressure chamber 22 (P1>
P2) shows a state in which the piston valve 2 is pushed up to discharge water. .

FIG. 3 shows that when the piston valve 2 reaches the top dead center of the plunger 8, the seat 5 closes and the primary water passage 21 is closed.
And the piston valve pressure chamber 22 has the same pressure (P1 = P2), and when the force for pushing up the piston valve 2 is lost, no further increasing force is generated and the state is stationary. .

FIG. 4 shows a state in which when the plunger 8 is lowered, water in the primary channel 21 flows through the small hole 3 and the piston valve 2 is lowered and closed. .

FIGS. 5 to 7 show sectional views of a second embodiment of the present invention. When the valve drive means is a linear solenoid, the hydraulic force is adjusted by adjusting the stroke of the linear solenoid.
The water volume can be adjusted.

FIG. 5 shows a state in which the plunger 8 is lowered.
The seat 5 is closed and shows a closed state. P1 = P2.

FIG. 6 shows that when the piston valve 2 reaches the top dead center of the plunger 8, the seat 5 is closed and the primary water passage 21 is closed.
And the piston valve pressure chamber 22 has the same pressure (P1 = P2), and when the force for pushing up the piston valve 2 is lost, no further increasing force is generated and the state is stationary.

FIG. 7 shows a state in which the top dead center of the plunger 8 is increased with respect to FIG. 6, and the lift stroke of the piston valve 2 becomes longer.

FIG. 8 shows a sectional view of a third embodiment of the present invention. This figure shows a structure in which a diaphragm valve is used for a seat portion of a piston valve and a solenoid is used for valve driving means. 1. When the plunger 8 is lowered, the seat 5 is closed and closed. 2. When the plunger 8 is raised by the solenoid valve 7, the diaphragm 30 sheet 13 is opened, and the pressure chamber 31 of the diaphragm 30 has the same pressure as the secondary drainage passage 23 (P3 = P4),
The pressure P2 of the pressure chamber 22 is equal to the pressure chamber 31 of the diaphragm 30.
(P2> P4) higher than the pressure P4 of the diaphragm 3
0 is pushed up and the sheet 5 is opened. 3. When the seat 5 is opened, the piston valve pressure chamber 22 becomes 2
The pressure becomes the same as that of the secondary drainage passage 23 (P2 = P3), the primary pressure P1 becomes higher than P2, and the piston valve 2 is pushed up to discharge water. 4. When the plunger 8 is closed, the pressure chamber 31 of the diaphragm 30 and the piston valve pressure chamber 22 become the same pressure (P2 = P
4), water flows in through the small holes 14, the diaphragm 30 is closed, and the sheet 5 is closed. 5. When the seat 5 is closed, the primary water passage 21 and the piston valve pressure chamber 22 have the same pressure (P1 = P2), the force for pushing up the piston valve 2 is lost, and the water in the primary water passage 21 flows through the small hole 3 and the piston valve 2 Descends and closes.

FIG. 9 shows a sectional view of a fourth embodiment of the present invention. This figure shows a structure in which a diaphragm valve is used for a seat portion of a piston valve and a latching solenoid is used for a valve driving unit. 1. With the plunger 8 lowered, the seat 5 is closed and closed. 2. Energize the latching solenoid 15 and plunger 8
Is attracted and attracted upward by the magnet 17, the sheet 13 of the diaphragm 30 is opened, and the pressure chamber 3 of the diaphragm 30 is opened.
1 becomes the same pressure as the secondary drain passage 23 (P3 = P4), and the pressure P2 of the piston valve pressure chamber 22 becomes the diaphragm 30
(P2> P4), the diaphragm 30 is pushed up and the sheet 5 is opened. 3. When the seat 5 is opened, the piston valve pressure chamber 22 becomes 2
The pressure becomes the same as that of the secondary drainage passage 23 (P2 = P3), the primary pressure P1 becomes higher than the pressure P2 in the pressure chamber 22, and the piston valve 2 is pushed up to discharge water. 4. When the plunger 8 attracted upward by the magnet 16 is separated by energizing the latching solenoid 15, the sheet 13
Is closed, the pressure chamber 31 of the diaphragm 30 and the piston valve pressure chamber 22 become the same pressure (P2 = P4), water flows in through the small hole 14, the diaphragm 30 is closed, and the seat 5 is closed. 5. When the seat 5 is closed, the primary water passage 21 and the piston valve pressure chamber 22 have the same pressure (P1 = P2), the force for pushing up the piston valve 2 is lost, and the water in the primary water passage 21 flows through the small hole 3 and the piston valve 2 Descends and closes.

FIG. 10 is a sectional view of a fifth embodiment of the present invention. A magnet is provided on the upper fixed side of the latching solenoid, and the magnets on the movable side and the magnetic poles are arranged in opposite directions.When the piston valve is fully lifted, the magnets come close to each other.In this case, the latching solenoid is closed when closed. Driving becomes unnecessary. 1. With the plunger 8 lowered, the seat 5 is closed and closed. 2. Energize the latching solenoid 15 and plunger 8
Is attracted and attracted upward by the magnet 17, the sheet 13 of the diaphragm 30 is opened, and the pressure chamber 3 of the diaphragm 30 is opened.
1 becomes the same pressure as the secondary drain passage 23 (P3 = P4), and the pressure P2 of the piston valve pressure chamber 22 becomes the diaphragm 30
(P2> P4), the diaphragm 30 is pushed up and the sheet 5 is opened. 3. When the seat 5 is opened, the piston valve pressure chamber 22 becomes 2
The pressure becomes the same as that of the secondary drainage passage 23 (P2 = P3), the primary pressure P1 becomes higher than P2, and the piston valve 2 is pushed up to discharge water. 4. When the piston valve 2 is fully lifted, the magnet 13 repels the plunger 8 by repulsion, and the seat 13 closes, and the pressure chambers 31 and 22 of the diaphragm 30 are closed.
Becomes the same pressure (P2 = P4), water flows in through the small holes 14, the diaphragm 30 is closed, and the sheet 5 is closed. 5. When the seat 5 is closed, the primary water passage 21 and the piston valve pressure chamber 22 have the same pressure (P1 = P2), the force for pushing up the piston valve 2 is lost, and the water in the primary water passage 21 flows through the small hole 3 and the piston valve 2 Descends and closes.

FIG. 11 is a sectional view of a sixth embodiment of the present invention. A diaphragm valve is provided in the seat portion of the piston valve, the cone portion of the diaphragm valve is extended, and the lever is pushed to open the diaphragm seat by the principle of leverage. 1. When the plunger 8 is lowered, the seat 5 is closed and closed. 2. When the push rod 18 is pushed, the lever 19 is pushed and the seat 5 is opened on the principle of leverage. 3. When the sheet 5 is opened, the pressure chamber 22 is moved to the secondary drainage channel 23.
(P2 = P3), the primary pressure P1 becomes higher than P2, and the piston valve 2 is pushed up to discharge water. 4. When the pushing of the push rod 18 is stopped, the sheet 5 is closed. 5. The seat 5 is closed and the primary side water passage 21 and the piston valve pressure chamber 22 have the same pressure (P1 = P2), the force for pushing up the piston valve 2 is lost, water on the primary side flows in through the small hole 3, and the piston valve 2 descends. And close.

[0025]

According to the present invention, the following effects are exhibited by the above configuration. In the first aspect, a water passage connecting the pressure chamber and the secondary drainage passage is provided in the piston valve itself, and the valve drive unit is provided on the pressure chamber side, so that a water passage on the main body side is unnecessary. In addition, since the valve seat is not pushed up from the secondary side, the diameter need not be unnecessarily large, and the pressure receiving area of the valve seat decreases,
The power consumption of the drive unit was reduced.

According to the second aspect, the flow path on the main body side is eliminated, and the apparatus can be driven by electricity.

According to the third aspect, the flow path on the main body side is eliminated, and further, the flow rate can be adjusted and the water discharge amount can be adjusted by the control circuit.

According to the fourth aspect, the flow path on the main body side is eliminated, and it becomes possible with less power than the second aspect. When a diaphragm valve is not used in the seat portion of the piston valve, if the seat diameter is reduced to save power in the driving portion, water in the pressure chamber passes through a narrow seat when the piston valve rises.
Because it flows to the secondary drainage channel, drainage of the pressure chamber becomes worse,
The rising speed becomes slow. Since it is preferable that the rising speed of the piston valve is faster in order to wash the toilet, the seat diameter cannot be reduced unnecessarily. If a diaphragm valve is used for the seat portion of the piston valve, the water in the piston valve pressure chamber is discharged to the secondary drainage channel at the diaphragm seat portion. Therefore, even if the pilot hole diameter is reduced, the piston valve rises. Don't be late. Therefore, the suction force of the solenoid was reduced, and power was saved.

According to the fifth aspect, the flow path on the main body side is eliminated, and the device can be driven with less electric power than the fourth aspect. If a diaphragm valve is used for the seat portion of the piston valve, the water in the piston valve pressure chamber is discharged to the secondary drainage channel at the diaphragm seat portion. Therefore, even if the pilot hole diameter is reduced, the piston valve rises. Don't be late.
Therefore, the suction force of the solenoid is reduced. Further, by using a latching solenoid, a mechanism that consumes electricity only at the time of opening and closing can further save power.

A sixth aspect of the present invention is a latching solenoid, which consumes electricity when lifting the plunger.
In the raised state, the attractive force of the movable magnet exceeds the spring force and the plunger is held above. Even at the time of closing, the repulsive force of the magnet reduces the attraction force of the holding magnet, and the spring force prevails, and the plunger closes. Therefore, further power saving was achieved because of the mechanism that consumes electricity only when it is opened.

According to a seventh aspect of the present invention, there is provided a structure in which a lever portion is provided by extending a cone portion of the diaphragm valve to the secondary side, and the lever portion is pushed by a manual push rod portion of a flash valve to pry open the diaphragm by the principle of leverage. This allows
Manual operation is also possible using the flash valve body.

[Brief description of the drawings]

FIG. 1 is a sectional view of a first embodiment of the present invention, showing a closed state of a solenoid.

FIG. 2 is a sectional view of the first embodiment of the present invention, showing a plunger in a lifted state.

FIG. 3 is a cross-sectional view of the first embodiment of the present invention, showing a piston valve in a full lift state.

FIG. 4 is a sectional view of the first embodiment of the present invention, showing a state in which a piston valve is in a closing operation state.

FIG. 5 is a sectional view of the second embodiment of the present invention, showing a closed state of the linear solenoid.

FIG. 6 is a cross-sectional view of the third embodiment of the present invention, showing a state in which the plunger stroke of the linear solenoid is at an intermediate position between a closed position and a full lift position.

FIG. 7 is a cross-sectional view of a fourth embodiment of the present invention, in which the plunger stroke of the linear solenoid is in a full lift state.

FIG. 8 is a sectional view of a fifth embodiment of the present invention, showing a solenoid in a closed state.

FIG. 9 is a sectional view of a sixth embodiment of the present invention, showing a latching solenoid in a closed state.

FIG. 10 is a sectional view of a sixth embodiment of the present invention, showing a latching solenoid in a closed state.

FIG. 11 is a sectional view of a seventh embodiment of the present invention, showing a latching solenoid in a closed state.

FIG. 12 is a sectional view of a conventional example.

FIG. 13 is a sectional view of another conventional example.

[Explanation of symbols]

 1: Body 2: Piston valve 3: Small hole 4: Water passage 5: Seat (pilot valve seat) 7: Solenoid valve (Valve driving means) 8: Plunger 12: Diaphragm valve 21: Primary water passage 22: Piston valve Pressure chamber 23: Secondary drainage channel 40: Electric switch 41: Control circuit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2D039 BB01 BB02 BB05 BB06 2D060 CA07 3H056 AA03 BB32 BB50 CA08 CB02 CC12 CD06 GG05 GG11 3H106 DA07 DA13 DA23 DA26 DA35 DB02 DB12 DB23 DB32 DC02 DC14 DC16 DD03 EE34 EE48 KK

Claims (7)

[Claims] 1. An automatic cleaning apparatus comprising: a control circuit for driving a valve driving means based on an electric switch input; and a piston valve which operates based on the valve driving means and discharges water. A washing device comprising: a water passage connecting the secondary drainage passage; and a pilot valve seat for opening and closing the water passage, and the valve driving means for opening and closing the pilot valve seat provided on the piston valve pressure chamber side. apparatus. 2. The cleaning apparatus according to claim 1, wherein a solenoid is used for said valve driving means. 3. The cleaning apparatus according to claim 1, wherein a linear solenoid is used for the valve driving unit, and a stroke adjusting unit for the linear solenoid is provided in the control circuit unit. 4. The cleaning apparatus according to claim 1, wherein a diaphragm valve is provided on a seat portion of the piston valve, and a solenoid is used for the valve driving means. 5. The cleaning apparatus according to claim 1, wherein a diaphragm valve is provided on a seat portion of the piston valve, and a latching solenoid is used for the valve driving means. 6. The magnet provided on the upper fixed side of the latching solenoid, the magnets on the movable side and the magnetic poles are arranged in opposite directions, and when the piston valve is fully lifted, the magnets are close to each other. The cleaning device according to the above. 7. The cone portion of the diaphragm valve is
6. The cleaning apparatus according to claim 4, further comprising a lever portion extended to the next side, wherein the lever portion is pushed by a manual push rod portion of the flash valve, and the diaphragm is pryed open by the principle of leverage.