JP2008223357A - Washing water supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a quiet and compact washing water supply device capable of facilitating construction and maintenance. <P>SOLUTION: A washing water supply device 101 includes a water guide pipe 10, and a first opening and closing valve V1 for opening and closing the water guide pipe 10, and supplies washing water to a toilet bowl 2 of a toilet stool body 1. The washing water supply device 101 further includes: an ejector 30 connected to the water guide pipe 10 on the downstream side of the first opening and closing valve V1; a tank 20, which is connected to a lead-out port 32 of the ejector 30, enables stored washing water to flow out from an outflow port 22, and has an inflow chamber 25, an outflow chamber 26 communicating with the inflow chamber 25 at the bottom, and an atmospheric port 23 communicating with the inflow chamber 25; a second opening and closing valve 2 for opening and closing the atmospheric port 23; a water feed pipe connecting the outflow port 22 with the toilet bowl 2; and a control device C for controlling the first opening and closing valve V1 and the second opening and closing valve V2. The inflow chamber 25 includes a whirling chamber 29, and a nozzle 50 for whirling washing water in the whirling chamber 29 is provided. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a washing water supply device.

  FIG. 1 of Patent Document 1 discloses a conventional cleaning water supply device. This washing water supply device includes a water conduit connected to the water pipe and an ejector connected to the water conduit. The ejector inlet is connected to the water conduit, the ejector outlet is connected to the inlet of the accumulator tank, and the ejector inlet is open to the outside. The outlet of the pressure accumulating tank is connected to the toilet bowl of the toilet body through an on-off valve.

  In the conventional cleaning water supply device having such a configuration, the air sucked by the ejector is sent into the pressure accumulating tank as bubbles in the cleaning water. The bubbles are separated in the accumulator tank, stay in the upper part of the accumulator tank, and are compressed. Thereafter, when the on-off valve is opened, the wash water flows out of the outlet by virtue of the air compressed in the upper part of the pressure accumulating tank and is supplied to the toilet bowl of the toilet body. The open / close state of the on-off valve is continued until the washing water mixed with bubbles flows out from the outlet. Thus, the toilet bowl can be reliably washed with a small amount of washing water.

JP 58-13838 A

  However, in the conventional cleaning water supply apparatus, since the cleaning water supplied to the toilet bowl mixes bubbles, an abnormal noise such as a bursting sound generated when the bubbles burst when being supplied to the toilet bowl is generated.

  Moreover, since the pressure accumulation tank is disposed upstream of the on-off valve, tap water pressure is applied to the pressure accumulation tank during still water. For this reason, it is necessary for the pressure accumulation tank to have pressure resistance capable of withstanding the tap water pressure. Moreover, when connecting a water conduit to the inflow port and the outflow port of the pressure accumulating tank, it must be firmly connected so as to withstand the tap water pressure. For this reason, it is difficult to reduce the size of the cleaning water supply device, and it takes time and labor for construction and maintenance.

  The present invention has been made in view of the above-described conventional situation, and should solve the problem of providing a cleaning water supply device that has quietness, is compact, and can be easily constructed and maintained. It is an issue.

The cleaning water supply device of the present invention includes a water conduit and a first on-off valve that opens and closes the water conduit, and the cleaning water supply device supplies the cleaning water to the toilet bowl of the toilet body.
An ejector that draws air from an intake port that opens to the outside by connecting an introduction port to the water conduit at a downstream side of the first on-off valve and deriving wash water from the discharge port;
An inflow port connected to the outlet and capable of discharging the stored wash water from the outflow port; an inflow chamber communicating with the inflow port; an outflow chamber communicating with the inflow chamber at the bottom; The tank having an air inlet communicating with the inflow chamber;
A second on-off valve for opening and closing the atmosphere port;
A delivery pipe communicating the outlet with the toilet bowl;
Control means for controlling the first on-off valve and the second on-off valve;
The inflow chamber includes a swirl chamber, and is provided with a nozzle that communicates with the outlet port of the ejector and swirls cleaning water in the swirl chamber.

  In the cleaning water supply apparatus of the present invention having such a configuration, the cleaning water flows into the swirl chamber while the ejector sucks air from the outside. The air in the wash water is well separated by centrifugal force in the swirl chamber, and the air stays in the upper part of the inflow chamber. The outflow chamber communicates with the inflow chamber at the bottom of the tank. For this reason, since air does not enter the outflow chamber and the washing water supplied to the toilet bowl contains almost no air, a bursting sound generated by bubbles bursting when supplied to the toilet bowl, etc. The generation of abnormal noise can be prevented.

  Moreover, since the inflow port of the tank communicates with the downstream side from the first on-off valve that opens and closes the water conduit, there is no tap water pressure applied to the tank during still water. For this reason, it is not necessary to make the tank high in pressure resistance. Moreover, it is not necessary to connect firmly when connecting a water conduit to the inlet and outlet of the tank.

  And by opening and closing a 2nd on-off valve, wash water can be stored in a tank or the wash water stored in the tank can be made to flow out. That is, the air sucked by the ejector together with the cleaning water flows into the inflow chamber of the tank. The inflowing air is discharged from the atmosphere port when the second on-off valve is open, but stays in the upper part of the inflow chamber when the second on-off valve is closed. For this reason, if the 2nd on-off valve is made into an open state, only cleaning water will be stored, without air retaining in a tank. On the other hand, if the 2nd on-off valve is made into a valve closing state, the wash water in a tank will be pushed out with the increase in the air which retains in the upper part of an inflow chamber. For this reason, by controlling the opening / closing timing of the second opening / closing valve, the supply amount of washing water per unit time to the toilet bowl can be increased or decreased at an arbitrary timing. Further, since the second on-off valve is an on-off valve for air, it can be made smaller than the on-off valve for water, and the opening / closing operation can be performed with a small force.

  Therefore, the cleaning water supply apparatus of the present invention has quietness, is compact, and can be easily constructed and maintained.

  The cleaning water supply device may further include a third on-off valve that opens and closes the intake port of the ejector. In this case, if the third on-off valve is closed, since the ejector does not suck air, the sound of the ejector sucking air can be eliminated. In addition, this prevents almost no air from being contained in the wash water, thus preventing the generation of abnormal noise such as a bursting sound that occurs when bubbles in the wash water burst when the wash water is supplied to the toilet bowl. can do. For this reason, the washing water supply device can be made more quiet.

  In the cleaning water supply apparatus of the present invention, the swirl chamber is preferably formed of a cylinder that is provided in the inflow chamber and extends in the vertical direction when installed. In this case, a stronger swirling flow is formed in the vertical direction by the centrifugal force and gravity, so that the air is better separated from the washing water.

  In the cleaning water supply apparatus of the present invention, it is preferable that the diameter of the cylinder is gradually reduced downward. In this case, since the diameter of the cylinder becomes smaller as it goes downward, the swirl force of the washing water is less likely to weaken downward. For this reason, air is more favorably separated from the washing water.

  In the cleaning water supply apparatus of the present invention, it is preferable that the tank has a shielding plate provided above the swirl chamber. In this case, the cleaning water can be prevented from splashing upward from the swirl chamber, and the atmospheric port or the like can be prevented from being blocked by water.

  In the washing water supply apparatus of the present invention, the tank is preferably disposed behind the toilet bowl and below the upper surface of the toilet bowl. In this case, the space behind the toilet bowl and below the upper surface of the toilet bowl can be used effectively. And the height which the toilet bowl washing | cleaning apparatus other than the toilet bowl main body of a flush toilet bowl including this tank, and a flush toilet bowl protrudes upwards from the upper surface of a toilet bowl in the back upper surface of a toilet bowl main body can be made low.

  The washing water supply apparatus of the present invention may include an intake device that sucks air from a toilet drainage channel communicating with the downstream side of the water seal portion of the toilet body, and the intake port of the ejector may be communicated with the intake device. In this case, an ejector of a cleaning water supply device that sucks air to supply cleaning water stored in a tank to a toilet bowl, and an ejector as a negative pressure generating means of an intake device that sucks air from a toilet drainage channel Can be the same. For this reason, the number of parts of the cleaning water supply device can be reduced and the structure can be simplified. Further, by sucking air from the toilet drainage channel, the siphon action can be generated early with a small amount of washing water. Furthermore, by supplying the wash water stored in the tank to the toilet bowl at an appropriate timing, the filth can be reliably discharged to the toilet drainage channel.

  Hereinafter, an embodiment in which the washing water supply device of the present invention is embodied in a Western style flush toilet will be described with reference to the drawings.

  As shown in FIG. 1, this Western-style flush toilet includes a toilet body 1 and a flush water supply device 100. Illustration of the toilet seat and toilet lid is omitted.

  The toilet body 1 has a rim 3 on the upper inner periphery of the toilet bowl 2. The toilet body 1 is formed with an ascending channel extending upward from the lower end of the toilet bowl 2, and a water seal 4 is formed below the toilet bowl 2. The ascending flow path of the toilet body 1 is connected to a connecting pipe, and the inside of the connecting pipe is a toilet drainage channel 5, a retention portion 6, and a drain port 7. As shown in FIG. 7, the toilet body 1 includes a storage portion 1 </ b> S that is surrounded by a side wall that is open at the rear of the toilet bowl 2 and is continuous at the left and right and the rear.

  As shown in FIG. 1, the toilet cleaning device 100 includes a cleaning water supply device 101 and an intake device for the toilet drainage channel 5.

  The cleaning water supply device 101 includes a water conduit 10 connected to the water pipe and a first on-off valve V1 that opens and closes the water conduit 10.

  The water conduit 10 communicates with a water tap stopcock V5 drawn from the floor or wall surface of the toilet room where the toilet body 1 is installed. Further, a strainer device 11 incorporating a water stop valve and a strainer and a constant flow valve 12 are provided on the upstream side of the first on-off valve V1, and a vacuum cube breaker 13 is provided on the downstream side.

  Further, the inlet 31 of the ejector 30 is connected to the water conduit 10 downstream of the vacuum breaker 13. An inlet 21 of the tank 20 is connected to the outlet 32 of the ejector 30, and the tank 20 can discharge the stored washing water from the outlet 22. Since the tank 20 is connected to the downstream side of the first on-off valve V1, the tank 20 is not subjected to water pressure during still water. For this reason, the tank 20 does not need to have a high pressure resistance. Further, there is no need to firmly connect the outlet 32 of the ejector 30 and the inlet 21 of the tank 20.

  The tank 20 is disposed in the storage portion 1 </ b> S of the toilet body 1 and below the upper surface of the toilet bowl 2. For this reason, the height at which the flush water supply device 101 including the tank 20 and thus the toilet bowl cleaning device 100 protrudes above the upper surface of the toilet bowl 2 on the rear upper surface of the toilet body 1 can be reduced.

  The tank 20 includes an inflow chamber 25 that communicates with the inflow port 21, and an outflow chamber 26 that communicates with the inflow chamber 25 at the bottom and communicates with the outflow port 22. An air inlet 23 is provided in the inflow chamber 25, and a second on-off valve V <b> 2 is connected thereto. The inflow chamber 25 has a swirl chamber 29 in which washing water is discharged from a nozzle 50 communicating with the outlet 32 of the ejector 30 to form a swirling flow. A delivery pipe 40 extending to the rim 3 of the toilet body 1 is connected to the outlet 22. This is the only supply path for supplying cleaning water to the toilet bowl 2.

  The ejector 30 has an intake port 33 communicating with the outside. The intake port 33 sucks air by deriving cleaning water from the deriving port 32.

  The air intake device of the toilet drainage channel 5 includes the following negative pressure accumulating tank 70, suction tank 80, and the like.

  The intake port 33 of the ejector 30 is connected to a negative pressure accumulating tank 70 that accumulates a negative pressure via a first pressure guiding pipe 110 provided with a check valve 111. For this reason, the ejector 30 which comprises the washing water supply apparatus 101 is utilized also for an intake device, the number of parts of the toilet bowl washing apparatus 100 is reduced, and the structure is simplified.

  A third on-off valve V3 is provided midway from the check valve 111 to the first pressure guiding pipe 110 from the negative pressure accumulating tank 70, and a second pressure guiding pipe 120 communicating with the outside is branched. Further, a fourth on-off valve V4 is provided in the middle, and a third pressure guiding tube 130 communicating with a suction tank 80 for sucking air from the toilet drainage channel 5 is branched.

  The inside of the suction tank 80 is partitioned into a first chamber 81 and a second chamber 82 by a diaphragm 83 that can move in the vertical direction at the time of installation. The first chamber 81 is connected to the third pressure guiding tube 130, and the second chamber 82 is connected to the toilet drainage channel 5 by the suction tube 90.

  As shown in FIG. 2, the opening / closing timing and the opening / closing time of the first opening / closing valve V 1, the second opening / closing valve V 2, the third opening / closing valve V 3, and the fourth opening / closing valve V 4 are controlled by the control device C. Since the second on-off valve V2, the third on-off valve V3, and the fourth on-off valve V4 are air on-off valves, the second on-off valve V2, the third on-off valve V3, and the fourth on-off valve V4 are made smaller than the water on-off valve and can be opened and closed with a small force. It is like that.

  The tank 20 which is a characteristic configuration of this embodiment will be described in more detail. As shown in FIGS. 3 and 4, the tank 20 includes a container-shaped tank body 27 and a lid member 28 that seals the tank body 27 with the packing 20 p sandwiched from above.

  An inflow port 21, an outflow port 22, and an atmospheric port 23 are formed in the lid member 28. The tank main body 27 has an inflow chamber 25 that communicates with the inflow port 21 and the atmosphere port 23, and an outflow chamber 26 that communicates with the inflow chamber 25 at the bottom and communicates with the outflow port 22.

  Further, as shown in FIG. 5, the tank body 27 is a container having a horizontally long oval shape in plan view. On the inner bottom surface of the tank body 27, an engaging convex portion 27a that protrudes upward is formed. An inflow chamber 25 and an outflow chamber 26 are formed in the tank body 27. A swirl chamber 29 is configured in the inflow chamber 25 by a cylindrical body 29t that extends in the vertical direction during installation and engages with the engagement convex portion 27a. In addition, the outflow chamber 26 is configured by a small cylindrical body 26t that extends in the vertical direction during installation and fits with the engagement convex portion 27a. As shown in FIG. 3, a bowl-shaped shielding plate 60 having an opening 60 a at the center is engaged with the upper end of the swirl chamber 29. The opening 60 a of the shielding plate 60 serves to guide the cleaning water positioned above the shielding plate 60 downward and guide the air separated from the cleaning water in the swirl chamber 29 upward to the shielding plate 60.

  As shown in FIG. 4, a nozzle 50 is provided inside the swirl chamber 29. The nozzle 50 communicates with the outlet 32 of the ejector 30 and opens along the inner surface of the cylindrical body 29t so that the cleaning water is swirled in the swirl chamber 29.

  As shown in FIG. 6, the lower end of the cylindrical body 29t and the lower end of the small cylindrical body 26t communicate with each other, and a communication passage 29r extending from the swirl chamber 29 to the outflow chamber 26 is formed at the bottom of the tank body 27. Yes. The communication passage 29r extends in the tangential direction of the cylindrical body 29t so that the washing water flows into the outflow chamber 26 using the momentum of the swirl flow generated in the swirl chamber 29. An opening 29a communicating with the inflow chamber 25 is formed at the lower end of the cylindrical body 29t. For this reason, the wash water in the inflow chamber 25 flows into the swirl chamber 29 from the opening 29 a and flows into the outflow chamber 26 together with the wash water swirling in the swirl chamber 29.

  The washing water flowing into the swirl chamber 29 forms a strong swirl flow in the vertical direction by centrifugal force and gravity, and the air in the wash water is well separated in the swirl chamber 29. The separated air stays in the upper part of the inflow chamber 29. The outflow chamber 26 communicates with the inflow chamber 25 at the bottom of the tank body 27. For this reason, air does not enter the outflow chamber 26 side, and the washing water supplied to the toilet bowl 2 contains almost no air, so that bubbles are generated when the toilet bowl 2 is supplied. Generation of abnormal sounds such as plosives can be prevented.

  In the above Western-style flush toilet, the flush water supply device 101 includes the water conduit 10, the strainer device 11, the constant flow valve 12, the first on-off valve V1, the vacuum cube breaker 13, the ejector 30, the nozzle 50, the tank 20, and the second. The on-off valve V2, the delivery pipe 40, the first pressure guiding pipe 110, the second pressure guiding pipe 120, the third on-off valve V3, and the control device C are configured. The intake device of the toilet drainage channel 5 includes an ejector 30, a first pressure guiding pipe 110, a check valve 111, a negative pressure accumulating tank 70, a second pressure guiding pipe 120, a third on-off valve V3, a third pressure guiding pipe 130, and a fourth opening / closing. The valve V4, the suction tank 80, the suction pipe 90, and the control device C are included.

  Therefore, the cleaning water supply apparatus 101 of the embodiment has quietness, is compact, and can be easily constructed and maintained.

  Next, the operation of the toilet bowl cleaning apparatus 100 incorporating the cleaning water supply apparatus 101 of the present invention will be described.

[Non-cleaning (Fig. 1)]
In FIG. 14, the first on-off valve V1, the second on-off valve V2, the third on-off valve V3, and the fourth on-off valve V4 are closed during non-cleaning before the time t1. In this state, cleaning water is stored in the tank 20. The diaphragm 83 in the suction tank 80 is in contact with the lower inner wall surface in the suction tank 80.

[Toilet bowl washing process / negative pressure accumulating process (Fig. 8)]
After the stool, at time t1 in FIG. 14, when the user operates a cleaning switch that transmits a toilet cleaning start signal to the control device C, the control device C opens the first on-off valve V1.

  As a result, the wash water flowing in the water conduit 10 flows into the swirl chamber 29 through the ejector 30. As the cleaning water flows through the ejector 30, the ejector 30 sucks the air in the negative pressure accumulating tank 70 through the first pressure guiding pipe 110 and the check valve 111, and the sucked air is swirled together with the cleaning water 29. Flows in. Since the wash water swirls in the swirl chamber 29, the air in the wash water is well separated and accumulated in the upper part of the inflow chamber 25. As a result, the negative pressure is gradually accumulated in the negative pressure accumulator tank 70, and the water surface of the inflow chamber 25 is gradually lowered by the amount of air sucked from the negative pressure accumulator tank 70.

  Further, the cleaning water supplied from the water conduit 10 and the amount of cleaning water stored in the tank 20 and corresponding to the air sucked from the negative pressure accumulating tank 70 are supplied to the rim 3 via the delivery pipe 40. . The wash water supplied to the rim 3 flows down while turning along the inner surface of the toilet bowl 2, and a swirling flow is formed in the toilet bowl 2. By this swirling flow, the filth is collected in the center of the toilet bowl 2. The swirling flow causes the paper to loosen and become familiar with the washing water and be dispersed in the washing water.

[Intake stroke (Fig. 9)]
At time t2 in FIG. 14, the control device C opens the fourth on-off valve V4. As a result, the negative pressure in the negative pressure accumulating tank 70 is transmitted to the first chamber 81 of the suction tank 80 via the first pressure guiding pipe 110, the third pressure guiding pipe 130, and the fourth on-off valve V4. Becomes negative pressure. Further, since the cleaning water is continuously supplied into the ejector 30, the air in the first chamber 81 is also sucked by the ejector 30. As a result, the diaphragm 83 in the suction tank 80 is rapidly pulled up by the negative pressure in the negative pressure accumulating tank 70 at the beginning when the fourth on-off valve V4 is opened. It is lifted gently until it contacts the wall surface.

  When the air in the toilet drainage channel 5 is sucked into the second chamber 82 by the suction tank 80, the water level in the toilet bowl 2 is sufficiently high by the wash water supplied from the rim 3, and the water seal 4 The water head difference from the highest portion 4a is sufficiently large. For this reason, the wash water in the toilet bowl 2 has a strong siphon action due to the water head difference and the suction of the air in the toilet drainage channel 5 so that the toilet drainage channel 5 is quickly filled with the wash water. In addition, the discharge flow is formed early with less washing water.

  At this time, the filth collected in the center of the toilet bowl 2 by the swirling flow formed in the toilet bowl 2 is surely transferred to the toilet drainage path 5 along with the wash water drained to the toilet drainage path 5 by siphon action. Discharged.

  Further, the toilet drainage channel 5 is sealed from the downstream side by the staying portion 6, and the toilet drainage channel 5 is a closed space existing between the water sealing portion 4 and the staying portion 6. For this reason, since a certain amount of air can be reliably sucked from the toilet drainage channel 5, the siphon action can be stably generated.

  Further, the suction tank 80 is partitioned into a first chamber 81 and a second chamber 82 by a diaphragm 83, and only the second chamber 82 communicates with the toilet drainage channel 5. The contained air or the like is reliably prevented from entering the negative pressure accumulating tank 70 or the ejector 30 side.

[Washing water increasing process (Fig. 10)]
At time t3 in FIG. 14, the water level of the toilet bowl 2 has dropped to the vicinity of the height of the lowest part 2a at the rear part of the toilet bowl 2, and at this moment, the control device C opens the third on-off valve V3, The fourth on-off valve V4 is closed.

  At this time, since the cleaning water is still supplied into the ejector 30, a large amount of external air flows into the swirl chamber 29 through the third on-off valve V 3, the second pressure guiding pipe 120, and the first pressure guiding pipe 110. . For this reason, the washing water in the inflow chamber 25 is pushed out to the rim 3 through the outflow chamber 26 and the delivery pipe 40 by a large amount of air that has flowed in. As a result, the water level in the inflow chamber 25 is drastically lowered.

  Washing supplied to the rim 3 before the water level in the toilet bowl 2 becomes lower than the lowest part 2a at the rear part of the toilet bowl 2 and air flows into the toilet drainage channel 5 from the toilet bowl 2 to finish the siphon action. Water increases. That is, the wash water supplied from the rim 3 is the sum of the wash water supplied from the water conduit 10 and the wash water stored in the tank 20, so that the toilet bowl 2 is washed per unit time. The amount of water supplied is increasing. For this reason, the water sealing part 4 does not break, the washing water in the toilet bowl 2 continues to turn, and the siphon action also continues. Further, the swirl flow in the toilet bowl 2 is also strong. In addition, the wash water flow increases. For this reason, the filth remaining in the toilet bowl 2 is more reliably discharged by being pushed into the toilet drainage channel 5.

[Returning process of diaphragm (FIG. 11)]
At time t4 in FIG. 14, the control device C closes the first on-off valve V1, and opens the fourth on-off valve V4. Thereby, the first chamber 81 of the suction tank 80 communicates with the outside via the fourth on-off valve V4, the third pressure guiding pipe 130, the first pressure guiding pipe 110, the second pressure guiding pipe 120, and the third on-off valve V3. The inside of the first chamber 81 becomes atmospheric pressure, and the diaphragm 83 descends. For this reason, air is gradually pushed into the toilet drainage channel 5 from the second chamber 82, and the air gradually increases in the toilet drainage channel 5. For this reason, the state where the toilet drainage channel 5 is filled with the washing water cannot be maintained, and the siphon action ends.

[Water-covering process (Fig. 12)]
At time t5 in FIG. 14, the control device C opens the first on-off valve V1 and the second on-off valve V2, and closes the fourth on-off valve V4. Accordingly, the cleaning water flows into the swirl chamber 29 while the ejector 30 sucks air from the outside. The air in the wash water is well separated in the swirl chamber 29 and is released to the outside through the atmosphere port 23 and the second on-off valve V2. For this reason, the wash water in the tank 20 is accumulated up to a predetermined water level before the start of washing. In addition, wash water is supplied from the outflow chamber 26 to the rim 3 through the delivery pipe 40, and the wash water accumulates in the toilet bowl 2 and covers it.

[Air release process (Fig. 13)]
At time t6 in FIG. 14, the first on-off valve V1 is closed by the control device C, and the fourth on-off valve V4 is opened. As a result, the first chamber 81 of the suction tank 80 communicates with the outside again via the fourth on-off valve V4, the third pressure guiding pipe 130, the first pressure guiding pipe 110, the second pressure guiding pipe 120, and the third on-off valve V3. The diaphragm 83 is lowered until it contacts the lower inner wall surface of the suction tank 80. As a result, the diaphragm 83 is returned to the predetermined position before the cleaning, and the next cleaning can be performed stably. Thereafter, at time t7 in FIG. 14, the control device C closes the second on-off valve V2, the third on-off valve V3, and the fourth on-off valve V4.

  The said Example is an example of this invention and this invention is not limited to the said Example.

  For example, as shown in FIG. 15, the diameter of the cylinder 29t of the swirl chamber 29 may be gradually reduced downward. In this case, since the diameter of the cylinder 29t decreases as it goes downward, the swirl force of the washing water is unlikely to weaken downward. For this reason, air is more favorably separated from the washing water.

  Further, the third on-off valve may be closed by the control device C at time t5 in FIG. In this case, since the cleaning water does not suck air when it passes through the ejector 30, it is possible to eliminate the sound of the ejector 30 sucking air. In addition, since almost no air is contained in the wash water, it is possible to prevent the generation of abnormal noise such as a burst sound generated by the burst of bubbles in the wash water supplied to the toilet bowl 2 for covering water. it can.

  The present invention can be used for flush toilets.

It is a schematic diagram of a Western style flush toilet equipped with the cleaning water supply device of the example. It is a schematic diagram which shows the control apparatus of the washing water supply apparatus of an Example. It is sectional drawing which shows the tank of the washing water supply apparatus of an Example. It is sectional drawing which shows the principal part of the tank of the washing water supply apparatus of an Example. It is AA arrow sectional drawing of FIG. It is a BB arrow sectional view of Drawing 3. It is the schematic which shows the state which integrated the tank of the washing water supply apparatus of the Example into the toilet bowl main body. It is a schematic diagram which shows an operation state when the western style flushing toilet of an Example exists in a toilet bowl washing | cleaning and negative pressure accumulation process. It is a schematic diagram which shows the operation state when the western style flush toilet bowl of an Example exists in an intake stroke. It is a schematic diagram which shows an operation state when the Western-style flush toilet bowl of an Example exists in the washing water increase process. It is a schematic diagram which shows an operation state when the Western-style flush toilet bowl of an Example exists in the return stroke of a diaphragm. It is a schematic diagram which shows an operation state when the Western-style flush toilet bowl of an Example exists in a covering process. It is a schematic diagram which shows an operation state when the western style flush toilet bowl of an Example exists in an air | atmosphere release process. It is a timing chart explaining the action | operation of the western style flush toilet of an Example. It is sectional drawing which shows the tank of the washing water supply apparatus of another Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Toilet body 2 ... Toilet bowl 10 ... Conduit pipe 20 ... Tank 21 ... Inlet 22 ... Outlet 23 ... Atmosphere port 25 ... Inlet chamber 26 ... Outlet chamber 27 ... Tank main body 28 ... Lid member 29 ... Swirl chamber 29t ... Cylindrical DESCRIPTION OF SYMBOLS 30 ... Ejector 31 ... Inlet port 32 ... Outlet port 33 ... Inlet port 40 ... Delivery pipe 50 ... Nozzle V1 ... 1st on-off valve V2 ... 2nd on-off valve C ... Control apparatus

Claims (5)

In the washing water supply device comprising a water conduit and a first on-off valve for opening and closing the water conduit, and supplying the cleaning water to the toilet bowl of the toilet body,
An ejector that draws air from an intake port that opens to the outside by connecting an introduction port to the water conduit at a downstream side of the first on-off valve and deriving wash water from the discharge port;
An inflow port connected to the outlet and capable of discharging the stored wash water from the outflow port; an inflow chamber communicating with the inflow port; an outflow chamber communicating with the inflow chamber at the bottom; The tank having an air inlet communicating with the inflow chamber;
A second on-off valve for opening and closing the atmosphere port;
A delivery pipe communicating the outlet with the toilet bowl;
Control means for controlling the first on-off valve and the second on-off valve;
The cleaning water supply apparatus according to claim 1, wherein the inflow chamber includes a swirl chamber, and a nozzle is provided that communicates with the outlet port of the ejector and swirls the wash water in the swirl chamber.   The washing water supply device according to claim 1, wherein the swirl chamber is configured by a cylinder provided in the inflow chamber and extending vertically when installed.   The washing water supply apparatus according to claim 2, wherein the cylinder is gradually reduced in diameter toward the lower side.   The cleaning water supply device according to any one of claims 1 to 3, wherein the tank includes a shielding plate provided above the swirl chamber.   The washing water supply device according to any one of claims 1 to 4, wherein the tank is disposed behind the toilet bowl and below the upper surface of the toilet bowl.

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