JP2005120742A - Pressure storage device and toilet flushing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toilet flushing device capable of forming a strong siphon exhaust flow by using a pressure storage tank and miniaturizing a capacity of the pressure storage apparatus. <P>SOLUTION: When washing is not performed by supplying washing water to neither a rim nozzle 4 nor a jet nozzle 5, a main valve body 46 is separated from a sheet 43 by high-pressure water on a primary side, pressure storage water is stored in the pressure storage tank 60. In the case of washing, first of all, after water has been supplied to the rim nozzle 4 for a predetermined time, water is supplied to the jet nozzle 5 by the direct pressure of water supply system hydraulic pressure. When the predetermined time t<SB>2</SB>passes away, a plunger valve 49 is made to open, and pressure storage water in the pressure storage tank 60 is also supplied to the jet nozzle 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a toilet bowl cleaning apparatus that supplies cleaning water to a western style toilet bowl, and more particularly to a toilet bowl cleaning apparatus that is employed when the western style toilet bowl is a siphon jet type western style toilet bowl. More specifically, the present invention relates to an improvement in a toilet cleaning device that supplies cleaning water to a Western-style toilet using tap water pressure without installing a tank such as a low tank or a high tank. Moreover, this invention relates to the pressure accumulation apparatus suitable for applying to this toilet bowl washing | cleaning apparatus.

  Many Western-style toilets that have been used in the past are of a low tank type in which a low tank is installed on the upper surface of the rear part of the toilet body and water in the low tank is supplied to a rim or the like.

  This low tank type Western-style toilet is traveling backwards by the amount of the low tank, and in recent years, Western-style toilets that have significantly reduced the rear protrusion of the Western-style toilet by omitting the low tank and supplying cleaning water with tap water pressure have rapidly become available. It is becoming popular. In this toilet flushing device using tap water pressure, a siphon jet cleaning system that forms a siphon discharge water flow by ejecting water from the jet hole to the trap of the toilet bowl in order to powerfully discharge dirt and paper from the toilet bowl. The method is adopted.

By the way, since flow resistance occurs when water flows in the water pipe, the tap water pressure at the time of water supply is generally lower than the tap water pressure at the time of still water. Since the flow resistance increases as the flow rate increases, it becomes difficult to supply flush water to the toilet bowl with sufficient water flow when supplying the toilet bowl with tap water pressure. As a countermeasure, JP-A-7-300891 discloses that a pressure accumulator is provided in the middle of a water pipe.
JP 7-300891 A

  In the Western-style toilet equipment disclosed in JP-A-7-300891, the Western-style toilet is a blow-out type Western-style toilet, and it is necessary to accumulate the entire amount of washing water supplied to the Western-style toilet using an accumulator. Become a large volume.

  An object of the present invention is to provide a toilet flushing device having sufficient toilet cleaning capability even if a small pressure accumulator is used, and a pressure accumulating device suitable for the toilet flushing device.

  The pressure accumulating device of the present invention is a pressure accumulating device comprising a pressure accumulating tank having a water inlet / outlet, a water inlet / outlet channel connected to the inlet / outlet, and a valve device provided in the inlet / outlet channel. The valve device is a pressure-responsive valve device that opens when the water pressure on the pressure accumulation tank side (secondary side) of the inlet / outlet flow path is lower than the primary side on the opposite side, A pressure-accumulated water outflow means for discharging the pressure-accumulated water in the pressure-accumulation tank to the primary side is provided.

  In such a pressure accumulating device, when the water pressure on the primary side is higher than that on the secondary side, the valve device opens and water flows into the pressure accumulating tank and is held in a pressure accumulating state. The accumulated water in the accumulator tank is discharged to the primary side by the accumulated water outflow means.

  In one aspect of the pressure accumulating device of the present invention, the valve device has one inside of the primary side and the secondary side, and the outer periphery is the other of the primary side and the secondary side. An annular seat portion, a main valve body whose front side contacts and separates from the seat portion, a back pressure chamber formed on the back side of the main valve body, and the back pressure chamber and the secondary side communicate with each other. A small hole, a control flow path communicating with the back pressure chamber and the primary side, and a control valve device for opening and closing the control flow path are provided.

  In this aspect, when the water pressure on the primary side becomes higher than that on the secondary side, the main valve body is pushed by the water pressure on the primary side and is separated from the seat portion, and the primary side and the secondary side Is communicated, and the pressure water on the primary side flows into the pressure accumulating tank and is stored.

  If the pressure on the secondary side is higher than that on the primary side when the control valve is closed, the main valve is seated on the seat and pressure is accumulated so that water flows out from the pressure accumulation tank to the primary side. Water outflow is prevented.

  When the accumulated water is held in the accumulator tank, the main valve is seated on the seat portion, and the water pressure on the primary side is lower than the accumulated water pressure, the control valve opens and the pressure in the back pressure chamber is reduced. The main valve body is pushed by the accumulated water and is separated from the seat portion, and the accumulated water flows out to the primary side.

  A toilet flushing apparatus according to the present invention is a toilet flushing apparatus having a washing water flow path for supplying washing water to a toilet bowl and a washing valve device provided in the washing water flow path, upstream of the washing valve apparatus. The pressure accumulating device according to the present invention is connected via the inlet / outlet channel.

  In the toilet cleaning device of the present invention, the accumulated water accumulates in the accumulator tank at the time of hydrostatic pressure (when the washing valve device is closed and the water pressure in the washing water flow path is high). When the cleaning valve device is opened and the cleaning water passage is in a water-permeable state, and the water pressure in the cleaning water passage becomes low, the cleaning water pressure can be increased by adding the pressure-accumulating water of the pressure accumulating device. Thus, since the pressure accumulation water of the pressure accumulation tank is added in order to increase the washing water pressure, the volume of the pressure accumulator is sufficient as compared with the conventional example in which the entire amount of the washing water is accumulated.

  In one aspect of this toilet bowl cleaning device, the cleaning water flow path includes an original flow path, a rim flow path and a jet flow path branched from the original flow path, and the cleaning valve device includes The water supply to the rim flow path and the jet flow path is controlled.

  In this aspect, it is desirable to provide control means for supplying water to the rim flow path for a predetermined time and then supplying water to the jet flow path for a predetermined time when cleaning the toilet bowl. In this case, the accumulated water can be added when necessary.

  This control means is preferably one that causes the pressure accumulation water outflow means of the pressure accumulator to flow out when water is supplied to the jet flow path. As a result, the water pressure in the washing water flow path that has been reduced by the water supply can be increased, and a strong siphon jet flow can be formed.

  The control means may cause the pressure accumulation water outflow means of the pressure accumulator to flow out when water is supplied to the rim flow path. Thereby, water can be sufficiently supplied to the rim end. Therefore, the washing water can be sufficiently distributed over the entire pot surface.

  The control means may supply water to the jet flow path after a predetermined waiting time has elapsed after stopping water supply to the rim flow path. Accumulated water is replenished to the accumulator tank during this predetermined time.

  In another aspect of the toilet bowl cleaning device of the present invention, a flow rate detecting means is provided in the cleaning water flow channel, and the flow rate of the cleaning water flow channel after the cleaning valve device is opened is a predetermined flow rate or less. At this time, a control means for causing the pressure accumulation water outflow means to perform an outflow operation is provided. As a result, the accumulated water is supplied only when the water pressure is insufficient, and the accumulator tank can be reduced in size. Moreover, as a result of supplying the accumulated water when the water pressure is sufficiently high, it is possible to prevent the flushing water pressure from becoming excessively high and splashing of water from the toilet bowl due to an excessive amount of water.

  The flow rate detecting means may be a hydroelectric generator. In this case, by using the hydroelectric generator as a power source for the control means, the valve device, etc., it becomes unnecessary to prepare these power sources separately, and energy saving can be achieved.

  According to the present invention, when the water pressure on the primary side becomes higher than the water pressure on the secondary side, the valve device automatically opens, the accumulated water flows into the pressure accumulation tank, and the pressure is accumulated. When the pressure falls below the water pressure, the valve device automatically closes and the pressure accumulation state in the pressure accumulation tank is maintained, but the pressure accumulation water in the pressure accumulation tank can be discharged to the primary side as needed. A pressure accumulator with controlled release is provided.

  In addition, according to the present invention, there is provided a toilet cleaning device that is provided with this pressure accumulating device, has a sufficient washing capacity, and that a pressure accumulating tank is small.

  Hereinafter, embodiments will be described with reference to the drawings. FIG. 1A is a perspective view of a Western-style toilet equipment equipped with a toilet cleaning device according to the embodiment, FIG. 1B is a configuration diagram of the electric valve unit, and FIG. 2A is a cleaning water supply flow path. 2B is a water supply timing chart of the cleaning water supply flow path, and FIG. 9 is another water supply timing chart of the cleaning water supply flow path.

  The pottery-made western style toilet 1 includes a bowl portion 2 at the front, and a rim 3 is provided on the upper inner periphery of the bowl portion 2. Wash water is supplied to the rim 3 through the rim nozzle 4. In addition, the trap portion of the bowl portion 2 is provided with a jet nozzle 5 that ejects water (jet water) for inducing a siphon discharge flow into the trap portion. This trap part has a rising part that rises obliquely upward from the bottom of the pot part 2 and a rising part that continues to the rising part and falls downward, and this rising part is connected to a drain pipe (not shown). ing. This trap structure itself is well known.

  The end of the water supply pipe protrudes from the wall surface of the toilet room, and a stop cock 10 is attached to the end of the water supply pipe. This stop cock 10 is connected to the strainer 12 installed in the rear part of the western style toilet 1 via the feed pipe 11 and the non-return valve 11a as an original flow path. The water that has passed through the strainer 12 can be supplied to the electric valve unit 20.

  The electric valve unit 20 drives the valve devices 22 and 23 arranged inside by a motor 21 to supply water to a rim nozzle water supply pipe 24 as a rim flow path or a jet nozzle water supply pipe 25 as a jet flow path. Supply. Note that a manual washing handle 28 is attached to the rotating shaft of the motor 21 so that the toilet can be used even during a power failure. The electric valve unit 20 is arranged in a cover casing (not shown).

  The electric valve unit 20 is provided with vacuum breakers 26 and 27 for breaking the negative pressure in the rim nozzle water supply pipe 24 and the jet nozzle water supply pipe 25. The vacuum breakers 26 and 27 are configured to open when negative pressure is generated in the water supply pipe 24 or 25 and to communicate the inside of the water supply pipe 24 or 25 with the atmosphere. Although not shown, check valves are respectively provided in the rim nozzle water supply pipe 24 and the jet nozzle water supply pipe 25.

  When supplying the cleaning water to the Western-style toilet 1 after the stool (stool), first, the valve device 22 is opened for a predetermined time, the cleaning water is supplied to the rim 3 and the dirt adhering to the bowl surface is washed off to the trap part. . Next, the valve device 23 is opened for a predetermined time, water is ejected from the jet nozzle 5, a siphon is induced in the trap portion, and dirty water is discharged to the drain pipe. Thereafter, the valve 22 is opened again for the required time, and trap water is stored.

  An inlet / outlet pipe 30 as an inlet / outlet channel branches from the upstream side of the check valve 11 a of the water supply pipe 11, and a pressure accumulating tank 60 is connected to the inlet / outlet pipe 30 through a valve device 40.

  Next, the configuration of the valve device 40 and the pressure accumulating tank 60 will be described with reference to FIG.

  The valve device 40 includes a primary port 41 and a secondary port 45, and a primary channel 42 and a secondary channel 44 are provided between the primary port 41 and the secondary port 45. Yes. The primary flow path 42 and the secondary flow path 44 are separated by the seat portion 43 and the main valve body 46.

  The seat portion 43 has an annular shape (cylindrical in this embodiment), and the inside communicates with the primary flow path 42 and the outer peripheral side communicates with the secondary flow path 44. The main valve body 46 contacts and separates from the seat portion 43 from above.

  The main valve body 46 is water-tightly connected to the outer peripheral surface of the secondary flow path 44 through a diaphragm 46 a continuous to the outer periphery thereof, thereby forming a back pressure chamber 47 on the upper side of the main valve body 46. ing. The back pressure chamber 47 and the secondary flow path 44 are always in communication with the main valve body 46 via a small valve hole 46 b provided in the main valve body 46.

  The back pressure chamber 47 communicates with the primary flow path 42 through a pilot small hole 48 serving as a control flow path. In order to open and close the pilot small hole 48, a plunger valve 49 made of a magnet as a control valve, a spring 50 for pressing the plunger valve 49 against the pilot small hole 48, and a coil for separating the plunger valve 49 from the pilot small hole 48 51 is provided. When the coil 51 is not energized, the plunger valve 49 is pressed against the end face of the pilot small hole 48 on the back pressure chamber side by the biasing force of the spring 50 to close the pilot small hole 48. When the coil 51 is energized, the plunger valve 49 is pulled up, the pilot small hole 48 is opened, and the primary flow path 42 and the back pressure chamber 47 communicate with each other.

  An inlet / outlet port 61 of the pressure accumulation tank 60 is connected to the secondary port 45 of the valve device 40 via a pipe 59. The pressure accumulating tank 60 has a pressure accumulating chamber 62 defined by a diaphragm 63. The atmospheric pressure chamber 64 above the diaphragm 63 is always in communication with the atmosphere through the opening 66. A spring 65 that presses the diaphragm 63 in the pressure accumulation direction is installed in the atmospheric pressure chamber 64.

  Each operation of accumulating, holding, and discharging the accumulated water in the accumulator tank 60 will be described with reference to FIGS.

FIG. 4 is an operation diagram for accumulating accumulated water. When the valves 22 and 23 of the electric valve unit 20 are both closed, the water pressure in the water supply pipe 11 is the water supply static pressure of the water supply pipe (for example, 1.0 to 2.0 kgf / cm ² ). . The main valve body 46 is pushed by this water pressure and is separated from the seat portion 43, and the primary flow path 42 and the secondary flow path 44 communicate with each other. Thereby, high-pressure water in the water supply pipe 11 flows into the pressure accumulation tank 60, and finally water having a pressure equal to the hydrostatic pressure in the water supply pipe 11 is stored in the pressure accumulation tank 60. At this time, the plunger valve 49 closes the pilot small hole 48.

  In the state where the accumulated water is stored in the accumulator tank 60 as described above, when the valve device 22 is opened and water flows in the water supply pipe 11 and the water pressure in the water supply pipe 11 decreases, the pressure in the back pressure chamber 47 is increased. The main valve body 46 is pressed against the seat portion 43 by the water pressure, and the accumulated water in the accumulator tank 60 does not flow out. This state is the accumulated water holding step of FIG. As shown in FIG. 5, the plunger valve 49 closes the pilot small hole 48. Even when the valve device 23 is opened instead of the valve device 22, the same accumulated pressure holding process is performed.

  When it is necessary to increase the water pressure of the water flowing through the water supply pipe 11, the coil 51 is energized to pull up the plunger valve 49 and the pilot small hole 48 is opened as shown in FIG.

  As a result, the back pressure chamber 47 communicates with the primary flow path 42 and the water pressure thereof decreases, the main valve body 46 is pushed away by the accumulated pressure water pressure and is separated from the seat portion 43, and the accumulated water in the accumulation tank 60 is The water supply pipe 11 is supplied through the valve device 40 and the inlet / outlet pipe 30. Since the inside of the water supply pipe 11 is filled with water, the water pressure in the water supply pipe 11 becomes sufficiently high only by adding a small amount of accumulated water.

  The energization of the coil 51 is controlled by the controller (not shown in FIGS. 1 to 6) together with the electric valve unit 20. A detection signal of a user of the Western-style toilet 1 and a flash switch signal of a remote controller (not shown) are input to this controller, and energization of the motor-operated valve unit 20 and the coil 51 is controlled based on these signals.

  Next, the operation of the toilet bowl cleaning device having the pressure accumulating device configured as described above will be described.

  When the cleaning water is not supplied to either the rim nozzle 4 or the jet nozzle 5, the accumulated water is stored in the accumulator tank 60 as shown in FIG. 4, and then the accumulated water is held in the accumulator tank 60 as shown in FIG. 5. The

  When the toilet bowl cleaning is started, the motor-operated valve unit 20 first supplies water to the rim nozzle 4 for a predetermined time as shown in FIG. 2 (b) to wash away dirt adhering to the bowl surface of the toilet bowl. During this cleaning, water is supplied only to the rim nozzle 4 and not to the jet nozzle 5.

  In a normal case, the plunger valve 49 of the valve device 40 is closed during the rim cleaning, and the accumulated water is held in the accumulation tank 60 as shown in FIG.

  However, in the present invention, as shown in FIG. 9, the plunger valve 49 is opened for a short period of time during this rim cleaning, and a small amount of pressure-accumulated water flows out, so that the water reaches the end of the rim water passage sufficiently. You may make it make it.

Thus when releasing part of accumulator water during rim flush, if a time lag t ₁ between the rim flush and the next jet cleaning, it is possible to replenish the accumulator water required for jet cleaning the accumulator tank .

Water supply to the rim nozzle 4 is stopped, and after a short time t ₁ has elapsed, water is supplied to the jet nozzle 5 by direct pressure of tap water pressure, and water is ejected from the jet nozzle 5 with a relatively gentle water force, and the trap section A relatively loose siphon is induced to discharge filths such as sedimentary solids from the trap section to the drain pipe together with water.

When the predetermined time t ₂ from the start of water supply to the jet nozzle 5 has elapsed, the plunger valve 49 is opened, the pressure accumulating water in accumulator tank 60 as shown in FIG. 6 is also supplied to the jet nozzle 5. As a result, the amount of water ejected from the jet nozzle 5 and the water pressure increase, and a strong siphon discharge water flow is formed in the trap portion. As a result, solids that are difficult to flow, such as paper floating on or near the water surface in the bowl, are also quickly discharged.

  Thereafter, the plunger valve 49 is closed and the water supply to the jet nozzle 5 by the electric valve unit 20 is stopped. Thereafter, the motor-operated valve unit 20 supplies water to the rim nozzle 4 for a predetermined time, and stores a required amount of trap water at the bottom of the toilet bowl. Thereafter, the accumulated water is stored in the accumulation tank 60 while the valve devices 22 and 23 of the electric valve unit 20 are closed.

  As described above, according to this embodiment, the accumulated water in the accumulation tank 60 is added to the water supply to the jet nozzle 5, so that a strong siphon discharge flow can be formed, and the paper that is difficult to flow can be reliably obtained. It becomes possible to discharge. Moreover, when this accumulated pressure water is added to the water supply pipe 11, the water pressure in the water supply pipe 11 becomes sufficiently high, so that the amount of accumulated water to be added is sufficient. For this reason, the pressure accumulation tank 60 is sufficient to have a small volume.

  In the above embodiment, only one pressure accumulation tank 60 is connected to one valve device 40, but two or more pressure accumulation tanks 60 may be connected as shown in FIG.

  In the above-described embodiment, the inner side of the seat portion 43 is a primary flow path and the outer periphery is a secondary flow path, but may be reversed. Of course, also in this case, the control flow path communicates with the primary flow path, and the valve small hole 46b communicates with the secondary flow path.

  In the above embodiment, the inlet / outlet pipe 30 is branched from the upstream side of the check valve 11a, but may be branched from the downstream side of the check valve 11a.

  In the present invention, a flow meter is provided in the water supply pipe 11 to detect the flow rate in the water supply pipe 11 at the time of toilet cleaning, and when this flow rate is lower than the predetermined flow rate, the accumulated water is caused to flow out to the water supply tube 11 to When there is more than that, the accumulated water may not be allowed to flow into the water supply pipe 11. This flow meter may be a hydroelectric generator as shown in FIG.

  In FIG. 8, the controllers 71 and 72 are driven by the electric power of the hydroelectric generator, and the flow rate is detected based on the generated voltage or the generated frequency of the hydroelectric generator. The hydraulic generator flow rate signal is input to the pressure accumulation controller 71, and the plunger valve 49 of the valve device 40 is opened when the flow rate during toilet flushing is insufficient. The stage in FIG. 2B in which toilet flushing is performed is determined by a signal from the toilet flushing controller 72. The toilet cleaning controller 72 receives signals from the remote controller and the human body detection sensor, and gives a control signal from the toilet cleaning controller 72 to the electric valve unit 20.

  The accumulator tank 60 may be disposed inside the western-style toilet (for example, inside the pedestal) or may be disposed outside the western-style toilet.

(A) The figure is a perspective view of the Western-style toilet equipment provided with the toilet bowl washing | cleaning apparatus which concerns on embodiment, (b) is a block diagram of the motor operated valve unit. FIG. 5A is a system diagram of the cleaning water supply flow path, and FIG. 5B is a water supply timing chart of the cleaning water supply flow path. It is sectional drawing which shows the structure of a pressure accumulation tank and a valve apparatus. It is an action | operation figure of a pressure accumulation tank and a valve apparatus. It is an action | operation figure of a pressure accumulation tank and a valve apparatus. It is an action | operation figure of a pressure accumulation tank and a valve apparatus. It is a block diagram of the pressure accumulation tank and valve apparatus which concern on another embodiment. It is a block diagram of the pressure accumulation tank and valve apparatus which concern on another embodiment. It is another water supply timing chart of a washing water supply channel.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Western style toilet bowl 2 Bowl part 3 Rim 4 Rim nozzle 5 Jet nozzle 10 Stop cock 11 Water supply pipe (original flow path)
12 Strainer 20 Electric valve unit 24 Water supply pipe for rim nozzle (Rim channel)
25 Water supply pipe for jet nozzle (jet flow path)
40 valve device 42 primary flow path 43 seat part 44 secondary flow path 46 main valve body 46b valve small hole 47 back pressure chamber 48 pilot small hole (control flow path)
49 Plunger valve (Control valve)
60 Accumulation tank 70 Hydroelectric generator

Claims (9)

An accumulator tank with a water inlet and outlet;
A water access passage connected to the entrance;
In a pressure accumulating device provided with a valve device provided in the passage for access,
The valve device is a pressure-responsive valve device that opens when the water pressure on the pressure accumulation tank side (secondary side) of the inlet / outlet flow path becomes lower than the primary side on the opposite side,
The valve device is provided with pressure accumulation water outflow means for causing pressure accumulation water in the pressure accumulation tank to flow out to the primary side. In a toilet flushing apparatus having a flush water channel for supplying flush water to a toilet and a flush valve device provided in the flush water channel,
A toilet cleaning device, wherein the pressure accumulating device according to claim 1 is connected to the upstream side of the cleaning valve device via the flow passage. In claim 2, the washing water flow path comprises a main flow path, a rim flow path and a jet flow path branched from the original flow path,
The toilet cleaning device is characterized in that the cleaning valve device controls supply of water to the rim flow channel and the jet flow channel.   4. The toilet bowl cleaning apparatus according to claim 3, further comprising control means for supplying water to the rim flow path for a predetermined time and then supplying water to the jet flow path for a predetermined time.   5. The toilet bowl cleaning device according to claim 4, wherein the control means is configured to cause the pressure accumulation water outflow means of the pressure accumulation device to flow out when water is supplied to the jet flow path.   6. The toilet cleaning device according to claim 5, wherein the control means is configured to cause the pressure accumulation water outflow means of the pressure accumulation apparatus to flow out when water is supplied to the rim flow path.   7. The control unit according to claim 6, wherein after the supply of water to the rim flow passage is stopped, the control means waits for a predetermined waiting time, starts supplying water to the jet flow passage after supplying the accumulated pressure water to the pressure accumulation tank. Toilet bowl cleaning device characterized by that. In claim 2,
A flow rate detecting means is provided in the washing water flow path,
A toilet cleaning device, comprising: a control means for causing the pressure-accumulated water outflow means to flow out when the flow rate of the cleaning water flow path after the cleaning valve device is opened is equal to or lower than a predetermined flow rate.   The toilet cleaning device according to claim 7, wherein the flow rate detecting means is a hydroelectric generator.

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