WO2012108269A1 - 便器洗浄装置及び水洗式便器 - Google Patents
便器洗浄装置及び水洗式便器 Download PDFInfo
- Publication number
- WO2012108269A1 WO2012108269A1 PCT/JP2012/051631 JP2012051631W WO2012108269A1 WO 2012108269 A1 WO2012108269 A1 WO 2012108269A1 JP 2012051631 W JP2012051631 W JP 2012051631W WO 2012108269 A1 WO2012108269 A1 WO 2012108269A1
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- WO
- WIPO (PCT)
- Prior art keywords
- tank
- toilet
- water
- toilet bowl
- cleaning
- Prior art date
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
- E03D11/18—Siphons
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
- E03D5/02—Special constructions of flushing devices, e.g. closed flushing system operated mechanically or hydraulically (or pneumatically) also details such as push buttons, levers and pull-card therefor
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D1/00—Water flushing devices with cisterns ; Setting up a range of flushing devices or water-closets; Combinations of several flushing devices
- E03D1/24—Low-level flushing systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
- E03D11/02—Water-closet bowls ; Bowls with a double odour seal optionally with provisions for a good siphonic action; siphons as part of the bowl
- E03D11/08—Bowls with means producing a flushing water swirl
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D3/00—Flushing devices operated by pressure of the water supply system flushing valves not connected to the water-supply main, also if air is blown in the water seal for a quick flushing
- E03D3/10—Flushing devices with pressure-operated reservoir, e.g. air chamber
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
- E03D5/01—Special constructions of flushing devices, e.g. closed flushing system using flushing pumps
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
- E03D5/10—Special constructions of flushing devices, e.g. closed flushing system operated electrically, e.g. by a photo-cell; also combined with devices for opening or closing shutters in the bowl outlet and/or with devices for raising/or lowering seat and cover and/or for swiveling the bowl
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
- E03D5/12—Special constructions of flushing devices, e.g. closed flushing system discharging periodically
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
- E03D11/02—Water-closet bowls ; Bowls with a double odour seal optionally with provisions for a good siphonic action; siphons as part of the bowl
Definitions
- the present invention relates to a toilet cleaning device and a flush toilet.
- Patent Document 1 discloses a flush toilet equipped with a conventional toilet cleaning device.
- This flush toilet includes a toilet body and a toilet cleaning device.
- the toilet cleaning device supplies toilet water to the toilet body to perform toilet cleaning.
- the toilet body has a toilet bowl portion and a toilet drainage channel communicating with the downstream side of the toilet bowl portion.
- the toilet bowl cleaning device has a tank, a hollow tube, an exhaust passage, and a water supply passage.
- the tank stores wash water supplied to the toilet bowl.
- the hollow tube extends and is accommodated in the tank in the vertical direction, and the lower end opening is opened in the tank.
- the exhaust passage communicates the upper end portion of the hollow tube with the toilet drainage channel of the toilet body via a position higher than the maximum storage level of the tank.
- the water supply channel communicates the tank and the toilet bowl of the toilet body.
- the flush water stored in the tank is supplied to the toilet bowl through the water supply channel, so that the water level in the tank is lowered.
- the water level in the hollow pipe also falls slightly behind the drop in the water level in the tank. For this reason, the hollow tube sucks the gas in the toilet drainage channel through the ventilation channel.
- this toilet bowl When this toilet bowl is washed, the wash water supplied to the toilet bowl flows into the toilet drainage channel, and the hollow tube sucks the gas in the toilet drainage channel. A siphon effect can be generated in the toilet drainage channel. For this reason, this flush toilet bowl can discharge the filth in the toilet bowl to the outside of the toilet body using the siphon action generated in the toilet drainage channel.
- Patent Document 2 discloses a flush toilet equipped with another conventional toilet cleaning device.
- This flush toilet includes a toilet body and a toilet cleaning device.
- the toilet cleaning device supplies toilet water to the toilet body to perform toilet cleaning.
- the toilet bowl cleaning apparatus includes a tank, a jet pump, a container, and a water supply channel.
- the tank stores wash water supplied to the toilet bowl.
- the jet pump has a nozzle and a throat disposed at a position facing the nozzle with a gap. This jet pump is disposed so as to be submerged in the cleaning water in the tank.
- the container surrounds the jet pump and is open at the top. This container is formed so that the upper end is lower than the highest water level in the tank. Further, the container has an opening penetrating the side surface and an opening / closing lid for opening and closing the opening.
- the water supply channel connects the jet pump and the toilet body.
- this flush toilet can increase or decrease the amount of washing water supplied to the toilet body by opening and closing the opening provided on the side surface of the container of the toilet cleaning device with an opening / closing lid. That is, in a state where the opening of the container is opened, the cleaning water outside the container can flow into the container through the opening. For this reason, the washing water outside the container can also be drawn in by the jet pump, and can be supplied to the toilet body via the water supply channel.
- the water level of the wash water in the hollow tube is lowered while maintaining a state that is slightly higher than the water level of the wash water in the tank (a state in which the water level difference between the inside of the tank and the hollow tube is small). .
- the hollow tube sucks the gas in the toilet drainage channel with a weak suction force from the start to the end of the suction. Therefore, in this flush toilet, the hollow tube may not suck the gas in the toilet drainage channel well in order to generate and continue the siphon action in the toilet drainage channel. That is, since the suction force of the hollow tube is weak, there is a possibility that the siphon action does not occur in the toilet drainage channel.
- the flow volume of the washing water in a toilet drainage channel differs.
- the flow rate of the washing water in the toilet drainage channel affects the suction force by which the hollow tube sucks the gas in the toilet drainage channel and the discharge force by which filth and the like in the toilet bowl are discharged.
- the suction force for sucking gas from the toilet drainage channel is too strong, and dirt flowing in the toilet drainage channel is in the exhaust passage. May be inhaled. If the exhaust passage is clogged due to dirt sucked into the exhaust passage, the siphon action may not be satisfactorily generated in the toilet drainage channel in the subsequent toilet cleaning.
- the toilet main body with a small flow rate of washing water in the toilet drainage channel there is no risk of sucking filth into the exhaust passage, but the siphon action cannot be generated well in the toilet drainage channel, and the filth etc. is moved out of the toilet body. There is a risk that the discharging power will be reduced. As described above, in the flush toilet, when the shape of the toilet bowl and the toilet drainage channel is different, there is a possibility that the filth and the like in the toilet bowl cannot be discharged satisfactorily by executing the toilet cleaning.
- the third invention has been made in view of the above-described conventional situation, and solves the problem of providing a toilet flushing apparatus capable of performing toilet flushing well and a flush toilet equipped with the toilet flushing apparatus. It should be a challenge.
- the jet pump When the jet pump is arranged near the bottom of the tank and the tank is arranged at a position lower than the upper surface of the toilet body, the water supply path connecting the jet pump and the toilet body becomes longer, and the ascending slope of the water supply path is increased. There is a risk of suddenness. If the water supply channel becomes long or the ascending slope of the water supply channel becomes steep, the pressure loss of the cleaning water passing through the water supply channel will increase, and the flow rate of the cleaning water supplied to the toilet body will decrease. Cleaning may be insufficient.
- the 4th invention was made in view of the above-mentioned conventional situation, has a degree of freedom of an installation position, and the flushing type provided with the toilet cleaning device which can perform toilet cleaning well, and the toilet cleaning device Providing a toilet bowl is a problem to be solved.
- the toilet cleaning device of the first invention is a toilet cleaning device for supplying cleaning water to a toilet body having a toilet bowl portion and a toilet drainage channel communicating with the downstream side of the toilet bowl portion, A first tank for storing wash water; A second tank having a lower opening communicating with the first tank and having a larger amount of water stored per unit height in an upper region than in a lower region; A vent path communicating the second tank and the toilet drainage path via a position higher than the highest water storage level of the first tank; A water supply channel communicating the first tank and the toilet bowl, The flow rate of the gas in the ventilation path that flows from the toilet drainage path side to the second tank side at a later time than the supply of the wash water stored in the first tank to the toilet bowl through the water supply path And a delay device for maximizing.
- This toilet cleaning device performs toilet cleaning by supplying cleaning water stored in the first tank to the toilet bowl through the water supply channel. At this time, when the water level in the second tank is lowered, the second tank sucks the gas in the toilet drainage channel through the ventilation channel. As a result, a siphon action can be generated in the toilet drainage channel even with a small amount of washing water, and filth and the like in the toilet bowl can be discharged well.
- this toilet flushing device has a maximum flow rate of gas flowing from the toilet drainage channel side in the ventilation passage to the second tank side later than the time when the toilet flushing is started by the delay device, so that the water level in the second tank is Can be delayed. For this reason, the water level in the 1st tank falls quickly compared with the water level in the 2nd tank in the meantime, and the water level difference between the 1st tank and the 2nd tank can be enlarged.
- the magnitude of the water level difference between the first tank and the second tank is proportional to the strength of the suction force of the second tank. For this reason, the second tank can have a strong suction force, and can suck the gas in the toilet drainage channel at once. Therefore, this toilet bowl washing
- this toilet flushing device has a larger amount of water stored per unit height in the upper region than in the lower region.
- the delay device maximizes the gas flow rate in the ventilation passage flowing from the toilet drainage channel side to the second tank side, and the wash water in the second tank flows out into the first tank at a large flow rate.
- the water level in the second tank slowly decreases. For this reason, in this toilet bowl cleaning device, the water level difference between the first tank and the second tank does not decrease rapidly. Therefore, this toilet bowl cleaning device can maintain the strong suction force of the second tank.
- the toilet cleaning device can maintain a state where the suction force of the second tank is stronger than the negative pressure in the toilet drainage channel due to the siphoning action generated in the toilet drainage channel. It is possible to prevent gas from flowing back into the toilet drainage channel from the second tank side during the continuation. For this reason, this toilet bowl washing
- the toilet bowl cleaning device of the first invention can perform toilet bowl cleaning well.
- a toilet cleaning device of the second invention is a toilet cleaning device for supplying cleaning water to a toilet body having a toilet bowl portion and a toilet drainage channel communicating with the downstream side of the toilet bowl portion, A first tank for storing wash water and having a lower water storage amount per unit height in an upper region than in a lower region; A second tank having a lower opening communicating with the first tank; A vent path communicating the second tank and the toilet drainage path via a position higher than the highest water storage level of the first tank; A water supply channel communicating the first tank and the toilet bowl, The flow rate of the gas in the ventilation path that flows from the toilet drainage path side to the second tank side at a later time than the supply of the wash water stored in the first tank to the toilet bowl through the water supply path And a delay device for maximizing.
- This toilet cleaning device also performs toilet cleaning by supplying the cleaning water stored in the first tank to the toilet bowl through the water supply channel. At this time, when the water level in the second tank is lowered, the second tank sucks the gas in the toilet drainage channel through the ventilation channel. As a result, a siphon action can be generated in the toilet drainage channel even with a small amount of washing water, and filth and the like in the toilet bowl can be discharged well.
- this toilet flushing device has a maximum flow rate of gas flowing from the toilet drainage channel side in the ventilation passage to the second tank side later than the time when the toilet flushing is started by the delay device, so that the water level in the second tank is Can be delayed. For this reason, the water level in the 1st tank falls quickly compared with the water level in the 2nd tank in the meantime, and the water level difference between the 1st tank and the 2nd tank can be enlarged. In particular, since the first tank has a smaller amount of water stored per unit height in the upper region than in the lower region, the water level in the first tank can be drastically lowered when toilet cleaning is started.
- this toilet flushing device the second tank sucks the gas in the toilet drainage channel and causes the flush water to flow into the first tank, but the lower area of the first tank stores water per unit height from the upper area. Since the amount is large, the rise in the water level in the first tank due to the washing water can be reduced. For this reason, a decrease in the water level difference between the first tank and the second tank can be suppressed, and a decrease in the suction force of the second tank can be suppressed. Therefore, this toilet bowl cleaning device can maintain the strong suction force of the second tank.
- the toilet cleaning device can maintain a state where the suction force of the second tank is stronger than the negative pressure in the toilet drainage channel due to the siphoning action generated in the toilet drainage channel. It is possible to prevent gas from flowing back into the toilet drainage channel from the second tank side during the continuation. For this reason, this toilet bowl washing
- the toilet bowl cleaning device of the second invention can perform toilet bowl cleaning satisfactorily.
- a flush toilet comprising a toilet bowl body, a toilet body having a toilet drainage channel communicating with the downstream side of the toilet bowl section, and the toilet bowl cleaning device of the first or second invention is a siphon as described above.
- the action can be reliably generated and the siphon action can be continued. For this reason, this flush toilet bowl can discharge
- a toilet cleaning device of a third invention is a toilet cleaning device for supplying cleaning water to a toilet bowl body having a toilet bowl and a toilet drainage channel communicating with the downstream side of the toilet bowl, A first tank in which the wash water flows in and stores the wash water that flows in; A second tank communicating with the lower part of the first tank; A vent passage communicating the second tank and the toilet drainage channel; A water supply channel communicating the first tank and the toilet bowl, And a washing water control device for controlling a flow rate of the washing water supplied from the first tank to the toilet bowl.
- the flushing water control device controls the flow rate of washing water supplied from the first tank to the toilet bowl according to the shape of the toilet bowl and the toilet drainage channel, so that toilet flushing is performed well. Can do. That is, when the flow rate of the wash water in the toilet drainage channel is large, if the flow rate of the wash water supplied to the toilet bowl portion is reduced, it is possible to prevent filth from being sucked into the aeration channel. Thereby, the 2nd tank can attract
- the toilet bowl cleaning device of the third aspect of the invention can perform toilet bowl cleaning satisfactorily.
- a flush toilet comprising a toilet bowl body, a toilet body having a toilet drainage channel communicating with the downstream side of the toilet bowl section, and the toilet bowl cleaning device of the third invention ensures the siphon action as described above. Can be generated. For this reason, this flush toilet bowl can discharge
- a toilet bowl cleaning device is a toilet bowl cleaning apparatus for supplying cleaning water to a toilet bowl body, A first tank in which the wash water flows in and stores the wash water that flows in; The inflow port into which wash water flows from the lower part of the first tank, and the outflow port provided above the inflow port and communicated with the toilet body, and when supplying the wash water to the toilet body, A third tank that maintains the wash water in a full state under the influence of the pressure of the wash water in the first tank in a state where air does not flow from the first tank through the inlet; A jet pump having a nozzle that is disposed in a position facing the outflow port in the third tank with a gap, and injects cleaning water toward the outflow port; A water supply channel communicating the outlet and the toilet body is provided.
- This toilet cleaning device is provided with an inlet for the third tank so that cleaning water can flow into the third tank from the lower part of the first tank. For this reason, air does not flow into the third tank from the first tank through the inlet until the water level of the cleaning water in the first tank drops below the inlet of the third tank. For this reason, the third tank can maintain the cleaning water in a full state under the influence of the water pressure of the cleaning water in the first tank. That is, most of the cleaning water in the first tank can be allowed to flow into the third tank.
- This toilet flushing apparatus can supply flush water flowing into the third tank to the toilet bowl main body via a water supply channel by a jet pump. For this reason, this toilet bowl washing
- the toilet tank cleaning apparatus is configured to wash the third tank with the cleaning water until most of the cleaning water in the first tank flows into the third tank. Since it can be maintained in a full water state, the jet pump can draw in the wash water in the third tank during that time, and can send the wash water to the water supply channel.
- the jet pump can be arranged in the upper part of the third tank in this way, even when the toilet cleaning device (first tank and third tank, etc.) is arranged at a position lower than the upper surface of the toilet body, The water supply channel is not long and the ascending slope of the water supply channel is not steep. For this reason, the pressure loss of the washing water passing through the water supply channel can be reduced. Therefore, this toilet cleaning device can supply a large flow of cleaning water to the toilet body. Moreover, this toilet bowl washing
- cleaning apparatus can supply most flush water stored in the 1st tank and the 3rd tank to the toilet bowl main body.
- the toilet bowl cleaning device has a degree of freedom in installation position and can perform toilet bowl cleaning satisfactorily.
- the flush toilet equipped with the toilet bowl body and the toilet bowl cleaning device of the fourth invention can be disposed at a position lower than the upper surface of the toilet bowl body, and the toilet bowl body is cleaned. Water can be supplied satisfactorily. Therefore, this flush toilet has a degree of freedom in the installation position of the toilet cleaning device, and can perform toilet cleaning satisfactorily.
- FIG. 3 is a schematic view showing a flush toilet of Example 2.
- FIG. 6 is a schematic view showing a flush toilet of Example 3.
- FIG. 6 is a schematic view showing a flush toilet of Example 4.
- FIG. 6 is a schematic diagram showing a flush toilet of Example 5.
- FIG. It is the schematic which shows the flush toilet bowl of Example 6.
- FIG. It is the schematic which shows the flush toilet bowl of Example 7.
- FIG. In the flush toilet bowl of Example 7, it is the schematic which shows the state which complete
- the first tank of the first invention can reduce the amount of water stored per unit height in the upper region than in the lower region.
- this toilet flushing device has a lower water storage amount per unit height in the upper region of the first tank than in the lower region, so that when the toilet flushing is started, the water level in the first tank can be rapidly lowered.
- this toilet bowl cleaning device can increase the water level difference between the first tank and the second tank from the beginning when the second tank sucks the gas in the toilet drainage channel, and the second tank is a toilet bowl. The gas in the drainage channel can be sucked with a strong suction force.
- the second tank sucks the gas in the toilet drainage channel and causes the cleaning water to flow into the first tank, but the lower region of the first tank stores water per unit height from the upper region. Since there is much quantity, the raise of the water level in the 1st tank by the washing water can be decreased. For this reason, a decrease in the water level difference between the first tank and the second tank can be suppressed, and a decrease in the suction force of the second tank can be suppressed.
- the combination with the second tank having a larger amount of stored water per unit height in the upper region than in the lower region slowly reduces the water level in the second tank and reduces the increase in the water level in the first tank. Therefore, it is possible to maintain a state in which a difference in water level between the first tank and the second tank is sufficiently secured.
- the lower opening can communicate with the first tank at a height lower than the lowest water storage level of the first tank.
- the gas (odor) in the toilet drainage channel through the ventilation channel Can be reliably prevented from being discharged into the first tank.
- the delay device of the first invention or the second invention may be an on-off valve that is provided in the air passage and opens and closes the air passage.
- the second tank opens the toilet drainage channel via the ventilation passage by opening the on-off valve at a later timing than the supply of the wash water stored in the first tank to the toilet bowl via the water supply channel.
- the gas inside can be sucked.
- cleaning apparatus can attract
- the second tank of the first invention or the second invention can be stored in the first tank.
- the communication between the first tank and the second tank can be completed only by housing and fixing the second tank in the first tank.
- the member which connects a 1st tank and a 2nd tank becomes unnecessary.
- Embodiments 1 and 2 embodying the flush toilet equipped with the toilet cleaning device of the first and second inventions will be described with reference to the drawings.
- the flush toilet of Example 1 includes a toilet main body 10 and a toilet cleaning device 20 that supplies cleaning water to the toilet main body 10.
- the toilet bowl body 10 includes a toilet bowl 11 and a toilet drainage channel 12 communicating with the downstream side of the toilet bowl 11.
- the toilet body 10 forms a water seal portion 13 for storing washing water by a lower portion of the toilet bowl portion 11 and an upstream portion of the toilet drainage channel 12.
- the toilet bowl cleaning device 20 is disposed behind the toilet body 10 at a position lower than the upper surface of the toilet body 10. For this reason, this flush toilet bowl can realize a low silhouette.
- the toilet bowl cleaning device 20 includes a first tank 21, a second tank 22, an air passage 23, a water supply passage 24, and an opening / closing valve 25 that is a delay device.
- the first tank 21 has an upper end that opens upward, and includes a peripheral wall portion 21A that extends in the vertical direction and a bottom wall portion 21B that closes the lower end of the peripheral wall portion 21A.
- the peripheral wall portion 21A has a drain port 21C penetrating in the lower portion.
- the drain port 21 ⁇ / b> C connects one end of the water supply channel 24.
- the first tank 21 can store water by flowing in the wash water via the tank water supply channel 26.
- the tank water supply channel 26 communicates with the water pipe as a water supply source at the upstream end.
- the tank water supply passage 26 is provided with a water supply valve 26V at the downstream end.
- the second tank 22 is hollow, and has a communication port 22B in which one end of the air passage 23 is connected to the upper end surface of the outer shell portion 22A, and a lower opening 22C that opens downward at the lower end. Yes. Moreover, as for the 2nd tank 22, the upper part of outer shell part 22A is expanded in one direction of the horizontal direction compared with the lower part. For this reason, the second tank 22 has a larger water storage amount per unit height in the upper region 22U than in the lower region 22D. The second tank 22 is housed and fixed in the first tank 21 such that the upper surface of the outer shell portion 22A is substantially the same height as the highest water storage level L of the first tank 21. The second tank 22 has a lower opening 22 ⁇ / b> C opened in the first tank 21.
- the wash water flows into the second tank 22 from the lower opening 22 ⁇ / b> C, and the wash water can be stored at the same water level as the first tank 21.
- the communication between the first tank 21 and the second tank 22 can be completed only by housing and fixing the second tank 22 in the first tank 21.
- the member which connects the 1st tank 21 and the 2nd tank 22 is unnecessary, and the possibility that the water leakage from the connection part of the 1st tank 21 and the 2nd tank 22 arises can be eliminated.
- the first tank 21 By storing and fixing the second tank 22 in which the upper portion of the outer shell portion 22A is expanded in the horizontal direction compared to the lower portion in the first tank 21, the first tank 21 is located in the upper region 21U rather than the lower region 21D. The amount of water stored per unit height is reduced.
- the air passage 23 has one end connected to the communication port 22 ⁇ / b> B of the second tank 22, extends from the upper end opening of the first tank 21 toward the toilet body 10, and the other end downstream of the water seal 13. It is connected to the upper part of the toilet drainage channel 12. For this reason, the air passage 23 communicates the second tank 22 and the toilet drainage passage 12 via a position higher than the maximum water storage level L of the first tank 21.
- the air passage 23 is provided with an on-off valve 25 as a delay device in the middle.
- the on-off valve 25 is controlled to open and close by a control device (not shown), and can open and close the air passage 23.
- the water supply channel 24 is connected to the drain outlet 21 ⁇ / b> C of the first tank 21, and the other end is arranged at the rear of the toilet bowl 11 of the toilet body 10.
- the water discharge port 24A is formed so as to discharge the cleaning water along the upper peripheral edge. For this reason, the wash water discharged from the water discharge port 24 ⁇ / b> A flows in one direction along the surface of the toilet bowl 11, and a swirling flow can be formed in the toilet bowl 11.
- the water supply path 24 is provided with a pump P that pumps the wash water stored in the first tank 21 to the toilet bowl 11 side. This pump P has a flow rate adjusting function capable of increasing or decreasing the flow rate of the wash water to be pumped.
- the first tank 21 stores the wash water up to the maximum water storage level L as shown in FIG.
- the second tank 22 stores the wash water at the same water level as that in the first tank 21.
- the open / close valve 25 provided in the vent passage 23 and the water supply valve 26V provided in the tank water supply passage 26 are closed.
- the toilet body 10 stores washing water in the water seal portion 13 to form a water seal.
- the pump P In a flush toilet, when a toilet flush button (not shown) is operated, the pump P is activated and toilet flushing is started. As shown in FIG. 6, the pump P pumps the wash water to the toilet bowl 11 side while gradually increasing the flow rate in the initial operation (0 to t1 seconds). As a result, the air in the pump P is vented, and the occurrence of air biting noise can be avoided. Further, as shown in FIG. 2, the first tank 21 has a smaller amount of water stored per unit height in the upper region 21U than the lower region 21D, and therefore the water level in the first tank 21 decreases at a stretch. The water level difference between the inside 21 and the inside of the second tank 22 is formed. Moreover, the water level in the toilet bowl part 11 of the toilet bowl body 10 rises.
- the pump P increases the flow rate of the wash water to be pumped up to q1 (L / min) (t1 seconds to t2 seconds). Then, first, as shown in FIG. 3, the flow rate of the wash water that overflows from the water seal portion 13 of the toilet body 10 to the downstream side of the toilet drainage channel 12 also increases. Further, the water level in the first tank 21 is further lowered, and the water level difference between the first tank 21 and the second tank 22 is further increased. As a result, the second tank 22 can generate a suction force necessary to suck the gas from the toilet drainage channel 12.
- a membrane is formed and the downstream part of the toilet drainage channel 12 is sealed.
- the toilet bowl cleaning device 20 opens the opening / closing valve 25 provided in the ventilation path 23. Then, since gas can flow from the toilet drainage channel 12 side to the second tank 22 side in the ventilation channel 23, the second tank 22 is placed in the toilet drainage channel 12 as the water level in the second tank 22 decreases. Aspirate the gas.
- the on-off valve 25 is later in time than the supply of the wash water stored in the first tank 21 to the toilet bowl 11 through the water supply channel 24 (the toilet P is started by operating the pump P). It is a delay device that opens the valve and maximizes the flow rate of the gas in the air passage 23 that flows from the toilet drainage channel 12 side to the second tank 22 side.
- the toilet bowl cleaning device 20 controls the opening of the opening / closing valve 25.
- the timing when the second tank 22 starts to suck the gas in the toilet drainage channel 12 can be easily controlled. For this reason, the toilet flushing device 20 can appropriately suck the gas in the toilet drainage channel 12 in order to generate a siphon action in the toilet drainage channel 12.
- a closed space is formed in the toilet drainage channel 12 by a water film formed in the downstream part of the toilet drainage channel 12, and the gas in the closed space is sucked into the second tank 22. For this reason, since this flush toilet can reduce gas reliably from the inside of the toilet drainage channel 12, the siphon action can be generated in the toilet drainage channel 12 even with a small amount of washing water.
- the opening / closing valve 25, which is a delay device is opened later than when the toilet flushing is started, the water level in the first tank 21 decreases during that time, and the water level in the second tank 22 is greatly different from the water level. Can be formed. Since the difference in water level between the first tank 21 and the second tank 22 is proportional to the strength of the suction force of the second tank 22, the second tank 22 has a strong suction force. For this reason, the second tank 22 can suck the gas in the toilet drainage channel 12 at a stretch. Therefore, the toilet flushing device 20 can reliably generate a siphon action in the toilet drainage channel 12.
- the pump P is operated, and the second tank 22 continues to suck the gas from the toilet drainage channel 12 as the water level in the second tank 22 decreases.
- the wash water in the second tank 22 flows out into the first tank 21 at a large flow rate, but the amount of water stored per unit height in the second tank 22 is higher in the upper region 22U than in the lower region 22D. Since there are many, the water level in the 2nd tank 22 falls slowly.
- the lower area 21D of the first tank 21 has a larger amount of stored water per unit height than the upper area 21U, the level of water in the first tank 21 due to the wash water flowing out from the second tank 22 into the first tank 21 is increased. The rise can be reduced.
- cleaning apparatus 20 can reduce the water level in the 2nd tank 22 slowly, and can raise the raise of the water level in the 1st tank 21, the 1st tank 21 and 2nd It is possible to maintain a state in which a difference in water level from the tank 22 is sufficiently secured. That is, the second tank 22 can suck the gas in the toilet drainage channel 12 with a strong suction force for a long time from the beginning.
- the toilet cleaning device 20 can maintain a state in which the suction force of the second tank 22 is stronger than the negative pressure in the toilet drainage channel 12 due to the siphon action generated in the toilet drainage channel 12. Further, it is possible to prevent the gas from flowing back into the toilet drainage channel 12 from the second tank 22 side during the siphon action. For this reason, this toilet bowl washing
- the toilet bowl cleaning device 20 includes a first tank 21 in a state where the flush water in the toilet drainage channel 12 is substantially full and the negative pressure in the toilet drainage channel 12 is maximum.
- the flow rate of the cleaning water pumped by the pump P is further increased to q2 (L / min) (t2 seconds to t3 seconds) as shown in FIG.
- the flow rate of the wash water flowing out from the first tank 21 into the toilet bowl 11 increases, so that the water level in the first tank 21 is increased by the wash water flowing out from the second tank 22 into the first tank 21.
- the rise is prevented, and the decrease in the water level difference in the first tank 21 and the second tank 22 is prevented.
- the suction force of the second tank 22 can be maintained so as not to become weaker than the negative pressure in the toilet drainage channel 12, the siphon action in the toilet drainage channel 12 can be continued, and the filth in the toilet bowl Etc. can be satisfactorily discharged out of the toilet body 10 using the siphon action.
- the flush toilet of Example 1 can perform toilet cleaning well.
- the wash water is stored in the water seal portion 13 of the toilet body 10 and is sealed in water, so that the wash water is supplied into the toilet bowl portion 11 at a small flow rate q3 (L / min).
- the pump P is stopped and the toilet cleaning is finished (t4 to t5 seconds).
- the water supply valve 26 ⁇ / b> V provided in the tank water supply passage 26 is opened, and the cleaning water is stored in the first tank 21. Thereafter, when the cleaning water level in the first tank 21 reaches the maximum water storage level L and the water level in the second tank 22 reaches the same level as in the first tank 21, the water supply valve 26V is closed, and the air passage The on-off valve 25 provided at 23 is also closed. Thereby, as shown in FIG. 1, the flush toilet bowl returns to a standby state before toilet flushing.
- the water level in the first tank 21 is lowered by the pump P being operated and the toilet bowl cleaning being executed, but it is not lower than the lower opening 22C of the second tank 22. That is, the second tank 22 is arranged so that the lower opening 22 ⁇ / b> C opens to the first tank 21 at a height lower than the lowest water storage level of the first tank 21. For this reason, the lower opening 22C of the second tank 22 is always closed by the washing water stored in the first tank 21 and is not opened in the first tank 21, and therefore the toilet drainage channel 12 through the ventilation passage 23.
- the internal gas (odor) can be reliably prevented from being released into the first tank 21.
- the toilet bowl cleaning device 30 includes a third tank 32, and the wash water stored in the first tank 31 is supplied to the toilet body 10 using the jet pump 33. This is different from the first embodiment in terms of supply.
- Other configurations are the same as those of the first embodiment, and the same configurations are denoted by the same reference numerals and detailed description thereof is omitted.
- the toilet bowl cleaning device 30 is located behind the toilet body 10 and at a position lower than the upper surface of the toilet body 10. For this reason, this flush toilet bowl can realize a low silhouette.
- the toilet bowl cleaning device 30 includes a first tank 21, a second tank 22, an air passage 23, a water supply passage 24, an on-off valve 25 that is a delay device, a third tank 32, and a jet pump 33.
- the first tank 31 has an upper end that opens upward, and includes a peripheral wall portion 31A that extends in the vertical direction and a bottom wall portion 31B that closes the lower end of the peripheral wall portion 31A.
- the first tank 31 houses and fixes the second tank 22 and the third tank 32 therein.
- the third tank 32 has an inlet 32A that opens downward in the first tank 31.
- the third tank 32 has an outlet 32B at the upper end.
- a branch water supply passage 37 for supplying cleaning water to an injection nozzle 36 described later is inserted in a watertight manner from the upper surface.
- the opening area of the outflow port 32 ⁇ / b> B is formed larger than the opening area of the injection port 36 ⁇ / b> A of the injection nozzle 36.
- the water supply channel 34 communicates the outlet 32 ⁇ / b> B and the toilet body 10. This water supply path 34 extends continuously from the opening edge of the outlet 32B. For this reason, the flow passage area of the water supply passage 34 is formed larger than the opening area of the injection port 36 ⁇ / b> A of the injection nozzle 36. Further, the water supply channel 34 has an ascending slope that extends obliquely upward to reach the upper rear end of the toilet body 10, and the water discharge port 34 ⁇ / b> A at the downstream end extends along the upper peripheral edge of the toilet bowl 11 of the toilet body 10. It is arranged to discharge the washing water. For this reason, the wash water discharged from the water discharge port 34 ⁇ / b> A of the water supply channel 34 flows in one direction along the surface of the toilet bowl 11, and a swirling flow can be formed in the toilet bowl 11.
- the outflow port 32B of the third tank 32 is formed at the upper end of the third tank 32, the water supply path 34 does not become long, and the water supply path 34 does not have an ascending gradient. For this reason, the pressure loss of the washing water passing through the water supply channel 34 can be reduced. For this reason, the toilet bowl cleaning device 30 can supply a large amount of flush water to the toilet bowl body 10.
- the jet pump 33 has an injection nozzle 36 disposed in a position in the third tank 32 and facing the outlet 32B of the third tank 32 with a gap.
- the jet pump 33 includes an outlet 32B of the third tank 32 and an injection nozzle 36.
- the injection nozzle 36 is provided in the upper part in the third tank 32, and directs the washing water to the outlet 32B so that the jetted washing water flows along the water supply channel 34.
- the jet pump 33 is disposed on the upper portion of the third tank 32. Wash water flows into the injection nozzle 36 through a branch water supply passage 37 that branches off the tank water supply passage 26.
- the branch water supply passage 37 is provided with an injection nozzle valve 37V on the way.
- the first tank 31 stores the wash water up to the maximum water storage level L as shown in FIG.
- the second tank 22 stores cleaning water at the same water level as the first tank 31.
- the third tank 32 is in a full state with the wash water flowing into the water supply channel 34. In this standby state, the on-off valve 25 provided in the vent passage 23, the water supply valve 26V provided in the tank water supply passage 26, and the injection nozzle valve 37V provided in the branch water supply passage 37 are closed.
- the toilet body 10 stores washing water in the water seal portion 13 to form a water seal.
- the injection nozzle valve 37V is opened as shown in FIG. 8, and toilet cleaning is started. That is, wash water is jetted from the jet port 36A of the jet nozzle 36, the wash water in the third tank 32 is drawn in, and the wash water is supplied to the toilet bowl 11 of the toilet body 10 through the outlet 32B and the water supply channel 34. To do. At this time, the wash water having a flow rate of about 3 to 4 times the flow rate of the wash water ejected from the jet port 36 A of the jet nozzle 36 can be supplied to the toilet bowl 11 of the toilet body 10.
- the water level per unit height of the first tank 31 is lower in the upper region 31U than in the lower region 31D, so that the water level in the first tank 31 decreases at a stretch, A water level difference from the inside of the second tank 22 is formed. Moreover, the water level of the toilet bowl part 11 of the toilet body 10 rises.
- the flow rate of the washing water overflowing from the water seal portion 13 of the toilet bowl body 10 to the downstream side of the toilet drainage channel 12 also increases. Further, the water level in the first tank 31 is further lowered, and the water level difference between the first tank 31 and the second tank 22 is further increased. As a result, the second tank 22 can generate a suction force necessary to suck the gas from the toilet drainage channel 12.
- the toilet bowl cleaning device 30 opens the opening / closing valve 25 provided in the ventilation path 23. Then, since gas can flow from the toilet drainage channel 12 side to the second tank side in the air passage 23, the second tank 22 moves into the toilet drainage channel 12 as the water level in the second tank 22 decreases. Aspirate the gas.
- the toilet flushing device 30 controls the opening of the opening / closing valve 25.
- the timing when the second tank 22 starts to suck the gas in the toilet drainage channel 12 can be easily controlled. For this reason, this toilet bowl washing
- a closed space is formed in the toilet drainage channel 12 by a water film formed in the downstream part of the toilet drainage channel 12, and the gas in the closed space is sucked into the second tank 22. For this reason, since this flush toilet can reduce gas reliably from the inside of the toilet drainage channel 12, the siphon action can be generated in the toilet drainage channel 12 even with a small amount of washing water.
- the opening / closing valve 25, which is a delay device is opened later than when the toilet flushing is started, the water level in the first tank 31 decreases during that time, and the water level in the second tank 22 is greatly different from the water level. Can be formed. Since the difference in water level between the first tank 31 and the second tank 22 is proportional to the suction force of the second tank 22, the second tank 22 has a strong suction force. For this reason, the second tank 22 can suck the gas in the toilet drainage channel 12 at a stretch. Therefore, the toilet flushing device 30 can reliably generate a siphon action in the toilet drainage channel 12.
- the second tank 22 continues to suck gas from the toilet drainage channel 12 as the water level in the second tank 22 decreases.
- the wash water in the second tank 22 flows out into the first tank 31 at a large flow rate, but the amount of water stored per unit height in the second tank 22 is higher in the upper region 22U than in the lower region 22D. Since there are many, the water level in a 2nd tank falls slowly.
- the lower area 31D of the first tank 31 has a larger amount of stored water per unit height than the upper area 31U, the water level in the first tank 31 due to the wash water flowing out from the second tank 22 into the first tank 31 is reduced. The rise can be reduced.
- cleaning apparatus 30 can reduce the water level in the 2nd tank 22 slowly, and can reduce the raise of the water level in the 1st tank 31, it is 2nd in the 1st tank 31 and 2nd. It is possible to maintain a state in which a difference in water level from the tank 22 is sufficiently secured. That is, the second tank 22 can suck the gas in the toilet drainage channel 12 with a strong suction force for a long time from the beginning.
- the toilet cleaning device 30 can maintain a state in which the suction force of the second tank 22 is stronger than the negative pressure in the toilet drainage channel 12 due to the siphon action generated in the toilet drainage channel 12. Further, it is possible to prevent the gas from flowing back into the toilet drainage channel 12 from the second tank 22 side during the siphon action. For this reason, this toilet bowl washing
- the toilet bowl cleaning device 30 has the second tank 22 even when the flush water in the toilet drainage channel 12 is substantially full and the negative pressure in the toilet drainage channel 12 becomes maximum. Since the suction force is stronger, it is possible to prevent the gas from flowing back into the toilet drainage channel 12 from the second tank 22 side during the siphon action. Therefore, this toilet bowl washing
- the flush toilet of Example 2 can perform toilet cleaning well.
- the level of the cleaning water in the first tank 31 further decreases, and the level of the cleaning water in the first tank 31 decreases from the inlet 32A of the third tank 32. Then, air flows into the third tank 32 from the first tank 31 through the inlet 32A of the third tank 32, and the level of the washing water in the third tank 32 is lowered at a stretch. For this reason, the jet pump 33 is exposed in the third tank 32, and the jet pump 33 cannot draw the cleaning water. Then, the flow rate of the wash water supplied into the toilet bowl 11 decreases, and the water level in the toilet bowl 11 decreases. As a result, air flows into the toilet drainage channel 12 from the toilet bowl 11 side, and the siphon action ends.
- the washing water is stored in the water sealing portion 13 of the toilet body 10 and sealed, so that the washing water is supplied into the toilet bowl 11 and then the injection nozzle valve 37V is closed. End toilet cleaning. Further, the water supply valve 26 ⁇ / b> V provided in the tank water supply passage 26 is opened, and the cleaning water is stored in the first tank 31. Thereafter, when the water level of the cleaning water in the first tank 31 becomes the highest water storage level L, the water level in the second tank 22 becomes the same water level as in the first tank 31, and the inside of the third tank 32 becomes full, The water supply valve 26V is closed, and the on-off valve 25 provided in the ventilation path is also closed. Thereby, as shown in FIG. 7, the flush toilet bowl returns to a standby state before toilet flushing.
- the second tank 22 Since the lower opening 22C of the second tank 22 is positioned below the inflow port 32A of the third tank 32, the second tank 22 has a lower opening 22C at a height lower than the lowest water storage level of the first tank 31. It arrange
- the cleaning water in the third tank 32 is drawn by the jet pump 33 and a large flow of cleaning water starts to be supplied to the toilet body 10.
- the cleaning water in the first tank 31 is It flows into the third tank 32 through the inlet 32A of the three tanks 32.
- the wash water in the third tank 32 is affected by the pressure of the wash water in the first tank 31, the inside of the third tank 32 is maintained in a full state with the wash water.
- the jet pump 33 can maintain the state immersed in the wash water in the 3rd tank 32, and can continue drawing in the wash water in the 3rd tank 32, it supplies a large flow of wash water to the toilet body 10 Can continue.
- the second tank in which the upper portion of the outer shell portion is expanded in the horizontal direction as compared with the lower portion, is housed and fixed in the first tank, so that the first tank is lower than the lower region.
- the amount of water stored per unit height is reduced in the upper region.
- 42 may be recessed inward to reduce the amount of water stored per unit height in the upper region than in the lower region.
- a rectangular parallelepiped separate part 43A for reducing the amount of water stored per unit height in the upper region than in the lower region may be attached to the upper part inside the first tank 43. Good.
- the upper part of the outer shell portion of the second tank is expanded in one direction in the horizontal direction as compared with the lower part.
- the upper part of the outer shell part may be expanded in a plurality of directions such as the horizontal direction in the horizontal direction as compared with the lower part.
- the second tank 46 has a larger amount of water stored per unit height in the upper region than in the lower region by gradually narrowing the outer shell portion inward toward the lower portion. May be.
- the on-off valve is used as the delay device.
- the second tank 51 may be provided with a delay device. That is, the second tank 51 shown in FIG. 13A is divided into an upper water storage chamber 51U and a lower water storage chamber 51D by the partition wall 52 in which the orifice 53 is formed.
- the cleaning water in the second tank 51 flows into the first tank 21 from the lower opening 51A, the cleaning water passes through the orifice 53 in the initial stage of toilet cleaning. At this time, since the washing water has a relatively large flow resistance, the water level in the second tank 51 is slowly lowered.
- the second tank 51 shown in FIG. 13B is partitioned into an upper water storage chamber 51U and a lower water storage chamber 51D by a partition wall 52 in which an orifice 53 is formed, and the lower water storage chamber 51D has a specific gravity higher than that of washing water.
- a spherical float 54 that can close the orifice 53 is housed.
- the cleaning water passing through the orifice 53 floats in the initial stage of toilet cleaning. Since the resistance of 54 is received, the water level in the second tank 51 falls more slowly than in the case where there is no float 54.
- the toilet bowl cleaning device includes the third tank, and includes the jet pump having the injection nozzle that jets the cleaning water toward the outlet of the third tank.
- the toilet bowl cleaning device 60 may not include the third tank.
- the branch water supply passage 37 is extended to the vicinity of the bottom wall portion 31B of the first tank 31, and the jet outlet 61A of the jet nozzle 61 is arranged in the vicinity of the bottom wall portion 31B, and is located at a position facing the jet outlet 61A.
- a jet pump may be formed by disposing an upstream end opening 62 ⁇ / b> A of the water supply passage 62.
- the cleaning water control device of the third invention may have a pump provided in the water supply channel. In this case, even if the height of the first tank is low, the supply of washing water from the first tank to the toilet bowl can be stably controlled.
- an intake control device may be provided that controls an intake operation in which the second tank sucks gas from the toilet drainage channel.
- the timing is suitable for the supply state of the wash water from the first tank to the toilet bowl. Gas can be sucked from the toilet drainage channel and a siphon action can be generated in the toilet drainage channel. Therefore, this toilet bowl cleaning device can perform toilet cleaning satisfactorily using the siphon action.
- the intake control device of the third invention may be configured by dividing the second tank into an upper water storage chamber and a lower water storage chamber by a partition wall having an orifice.
- the wash water passes through the orifice in the initial stage. Since the washing water is a liquid, the lowering of the water level in the second tank is relatively slow due to its flow resistance. And if the water level in a 2nd tank falls below a partition wall, the gas whose flow resistance is smaller than washing water will come through an orifice. Then, the fall of the water level in a 2nd tank becomes quick, and the flow volume of the gas attracted
- a closing member capable of closing the orifice by floating on the washing water in the lower water storage chamber may be provided.
- the closing member tries to close the orifice in the initial stage, and therefore the flow rate of the wash water passing through the orifice is when there is no closing member. It is narrowed down compared to.
- the gas whose flow resistance is smaller than a wash water will come through an orifice. Then, the fall of the water level in a 2nd tank becomes quick.
- the timing at which the flow rate of the gas sucked from the toilet drainage channel increases can be delayed, and therefore the timing at which siphon action is generated in the toilet drainage channel can be delayed.
- the flush toilet of Example 3 includes a toilet body 10 and a toilet cleaning device 300.
- the toilet body 10 includes a toilet bowl 11 and a toilet drainage channel 12 communicating with the downstream side of the toilet bowl 11.
- the toilet bowl 11 has a rim water passage 14 formed along the opening edge of the upper surface.
- the toilet drainage channel 12 communicates with the lower end of the toilet bowl 11 at the upstream end.
- a region from the top (the highest portion) to the lower end of the toilet bowl 11 is a water seal 13.
- the toilet drainage channel 12 has a vent 15 that is located downstream of the water seal 13 and opens upward from the water seal 13. Further, the toilet drainage channel 12 has a narrowed portion 16 having a reduced diameter in a region extending downward from the vent 15.
- the toilet bowl cleaning device 300 includes a first tank 110, a water supply channel 114, a second tank 115, a ventilation channel 118, a cleaning water control device 119, and an intake control device 122.
- the first tank 110 stores cleaning water supplied from a ball tap 111 provided with a water supply valve 112.
- the toilet bowl cleaning device 300 supplies the cleaning water stored in the first tank 110 to the toilet bowl 11.
- the first tank 110 has a drain port 113 formed at the lower end.
- the drain port 113 is connected to the upstream end of the water supply channel 114.
- the water supply channel 114 has a downstream end connected to the rim water channel 14.
- the wash water stored in the first tank 110 can be supplied to the rim water passage 14 via the water supply passage 114.
- the second tank 115 has a cylindrical shape with its upper end closed and its lower surface largely opened as a communication port 116.
- the second tank 115 is fixed inside the first tank 110.
- the communication port 116 opens at a height lower than the maximum storage level of the cleaning water stored in the first tank 110 before cleaning the toilet bowl.
- An internal space of the second tank 115 (a space for storing cleaning water) communicates with an internal space of the first tank 110 (a space for storing cleaning water) via the communication port 116.
- the second tank 115 is formed at the upper end and has an intake / exhaust port 117 that opens to a position higher than the maximum water storage level in the first tank 110.
- One end of the air passage 118 is connected to the intake / exhaust port 117.
- the other end of the air passage 118 is connected to the air vent 15 of the toilet drainage passage 12. That is, the air passage 118 communicates a position higher than the highest water storage level of the first tank 110 in the second tank 115 and a position higher than the water seal part 13 in the toilet drainage passage 12.
- the washing water control device 119 includes a pump 120 provided in the middle of the water supply channel 114 and a water supply electromagnetic on-off valve 121.
- the pump 120 pumps the wash water stored in the first tank 110 to the toilet bowl 11 (rim water passage 14) side.
- the pump 120 has a flow rate adjusting function that can increase or decrease the flow rate of the wash water to be pumped regardless of the head pressure of the first tank 110. That is, the flow rate of the wash water supplied from the first tank 110 to the toilet bowl 11 side can be made smaller or larger than the flow rate determined only by the head pressure of the first tank 110.
- the water supply electromagnetic on-off valve 121 is opened, the supply of the wash water from the first tank 110 to the toilet bowl 11 side is allowed.
- the water supply electromagnetic on-off valve 121 is closed, the first tank is closed. The supply of washing water from 110 to the toilet bowl 11 side is stopped.
- the intake control device 122 has a ventilation electromagnetic on-off valve 123 provided in the middle of the ventilation path 118.
- the venting electromagnetic on-off valve 123 When the venting electromagnetic on-off valve 123 is opened, the space on the downstream side (upper side) of the water seal portion 13 in the toilet drainage channel 12 and the space above the wash water in the second tank 115 communicate with each other. Air can flow between the two spaces.
- the venting electromagnetic on-off valve 123 is closed, the air flow in the vent passage 118 is blocked.
- the water supply electromagnetic on-off valve 121 is closed and the pump 120 is stopped.
- the first tank 110 stores cleaning water up to the maximum storage level.
- the second tank 115 stores the wash water up to the same water level as the first tank 110.
- the toilet body 10 stores water in the water seal 13 to form a water seal.
- the water supply electromagnetic on-off valve 121 is switched to the open state, and at the same time, the pump 120. Starts. Then, supply of washing water from the first tank 110 to the toilet bowl 11 side (that is, toilet bowl washing) is started.
- the wash water pumped from the first tank 110 to the toilet bowl 11 side is supplied into the toilet bowl 11 through the rim water passage 14, and pushes the filth in the toilet bowl 11 to the toilet drainage path 12 side. Further, the wash water that has flowed into the toilet drainage channel 12 scatters at the throttle portion 16 to form a water film.
- the venting electromagnetic on-off valve 123 is switched from the closed state. Switch to open state.
- the ventilation electromagnetic opening / closing valve 123 is opened, the space above the wash water in the second tank 115 and the space above (downstream side) the water seal portion 13 in the toilet drainage channel 12 communicate with each other. For this reason, the level of the washing water in the second tank 115 is lowered, and the gas in the space downstream (upward) from the water seal portion 13 in the toilet drainage channel 12 passes through the ventilation channel 118 and enters the second tank 115. Sucked. As a result, a siphon action is generated in the toilet drainage channel 12, and the filth and the like in the water seal 13 is discharged out of the toilet body 10.
- the water supply electromagnetic on-off valve 121 When a predetermined amount of washing water is supplied to the toilet bowl 11, the water supply electromagnetic on-off valve 121 is closed, the pump 120 is stopped, the supply of washing water to the toilet bowl 11 is stopped, and the toilet bowl is stopped. Washing is complete. After the supply of cleaning water from the first tank 110 to the toilet bowl 11 side is started, the cleaning water continues to be supplied from the pole tap 11 into the first tank 110. For this reason, the level of the wash water in the first tank 110 and the second tank 115 rises. Then, when the predetermined water level is reached, water supply from the ball tap 111 is stopped, and the inside of the first tank 110 and the inside of the second tank 115 are kept at a predetermined maximum water storage level. As a result, the flush toilet returns to the standby state before toilet cleaning.
- the toilet bowl cleaning apparatus 300 includes a pump 120 in the water supply path 114 as a cleaning water control apparatus 119 that controls the flow rate of cleaning water supplied from the first tank 110 to the toilet bowl 11. For this reason, according to the shape of the toilet bowl part 11 and the toilet bowl drainage channel 12, the flow volume of the washing water pumped by the pump 120 is controlled, and the flow rate of the washing water supplied from the first tank 110 to the toilet bowl part 11 is appropriately set. Can be set to As a result, the flush toilet can perform toilet cleaning well.
- the flow rate of the wash water supplied to the toilet bowl 11 by setting the flow rate of the wash water pumped by the pump 120 to be small. Should be reduced. In this way, it is possible to prevent filth from being sucked into the air passage 118. Thereby, the 2nd tank 115 can attract
- the toilet body 10 when the toilet body 10 is shaped to reduce the drainage flow rate in the toilet drainage channel 12, the flow rate of the wash water supplied to the toilet bowl 11 by setting the flow rate of the wash water pumped by the pump 120 to be increased. You should increase more. In this way, the siphon action can be reliably generated in the toilet drainage channel 12. For this reason, this flush toilet bowl can discharge filth etc. out of the toilet body 10 satisfactorily using a siphon action. Moreover, since the position of the 1st tank 110 is substantially the same height as this toilet bowl part 11, this flush toilet bowl cannot raise the supply pressure of wash water with the water head pressure of the 1st tank 110. However, if the flow rate pumped by the pump 120 is set large, the wash water can be stably supplied from the first tank 110 to the toilet bowl 11 even if the height of the first tank 110 is low.
- this flush toilet has a ventilation electromagnetic on-off valve 123 in the ventilation path 118 as an intake control device 122 that controls the intake operation from the toilet drainage path 12 to the second tank 115. If the opening / closing of the ventilation electromagnetic on / off valve 123 (intake operation from the toilet drainage channel 12 to the second tank 115) is controlled according to the opening / closing of the water supply electromagnetic on / off valve 121 and the driving of the pump 120, the first tank 110 The second tank 115 can suck the gas from the toilet drainage channel 12 at a suitable timing according to the supply state of the washing water to the toilet bowl 11, and can generate a siphon action in the toilet drainage channel 12.
- the stool bowl 11 is washed with the flow rate of the washing water pumped by the pump 120 at a small initial value, and a water film of the washing water is formed in the throttle section 16. Thereafter, the flow rate of the washing water pumped by the pump 120 is increased, and the second tank 115 enhances the suction force for sucking the gas from the toilet drainage channel 12. As a result, a strong siphon action can be generated in the toilet drainage channel 12, and the toilet bowl can be washed well. If the pumping flow rate of the pump 120 is reduced to a small amount at the end of toilet cleaning, the water seal 13 can be filled with a minimum amount of cleaning water.
- the flush toilet of the fourth embodiment is different from the third embodiment in the intake control device 124 of the toilet cleaning device 310.
- Other configurations are the same as those of the third embodiment, and the same configurations are denoted by the same reference numerals, and detailed description thereof is omitted.
- the intake control device 124 has a partition wall 125 that divides the second tank 115 into an upper water storage chamber 127 and a lower water storage chamber 128 below the upper water storage chamber 127.
- the partition wall 125 is formed with an orifice 126 penetrating vertically.
- the partition wall 125 is installed at a position lower than the maximum storage level of the cleaning water in the standby state.
- the upper water storage chamber 127 has an intake / exhaust port 117 at its upper end.
- the lower water storage chamber 128 has a communication port 116 opened at the lower end.
- the ventilation path 118 is not provided with a ventilation electromagnetic on-off valve. For this reason, the space above the wash water in the second tank 115 and the space above (downstream side) the water seal portion 13 in the toilet drainage channel 12 are always in communication.
- the intake control device 124 is designed so that the water level in the second tank 115 is lowered below the partition wall 125 when the water film of the cleaning water is formed in the throttle unit 16.
- a gas having a smaller flow resistance than the washing water passes through the orifice 126.
- the fall of the water level in the 2nd tank 115 becomes quick. That is, since the flow rate of the gas sucked from the toilet drainage channel 12 by the second tank 115 increases and the gas in the toilet drainage channel 12 can be sucked at once, a siphon action is generated in the toilet drainage channel 12. Can do.
- the lowering of the water level in the second tank 115 is made slower than the lowering of the water level in the first tank 110, the water level in the first tank 110 is lowered and the flow rate of washing water flowing out of the first tank 110 is small.
- the flow rate of the wash water flowing from the second tank 115 into the first tank 110 may be larger than the flow rate of the wash water flowing out from the first tank 110. If it becomes like this, since the water level difference in the 1st tank 110 and the 2nd tank 115 will become small, the fall speed of the water level in the 2nd tank 115 will become slow, and the suction power of the 2nd tank 115 will fall. As a result, the gas may flow backward from the second tank 115 to the toilet drainage channel 12 side, and the siphon action may end.
- the flow rate of the wash water flowing out from the first tank 110 to the toilet bowl 11 side can be increased by the pump 120. For this reason, it is possible to avoid the difference in water level between the first tank 110 and the second tank 115 from being reduced, and to increase the water level lowering speed in the second tank 115. Thereby, the fall of the suction power of the 2nd tank 115 can be prevented, and a siphon action can be continued.
- the inner diameter of the orifice 126 may be reduced.
- foreign matter in the cleaning water may clog the orifice 126.
- this flush toilet bowl forcibly sucks the wash water in the upper water storage chamber 127 toward the lower water storage chamber 128 by the pump 120, there is no possibility of clogging at the orifice 126.
- Example 5 As shown in FIG. 17, the flush toilet of the fifth embodiment is different from the fourth embodiment in the intake control device 129 of the toilet cleaning device 320.
- Other configurations are the same as those of the fourth embodiment, and the same configurations are denoted by the same reference numerals, and detailed description thereof is omitted.
- the intake control device 129 accommodates a closing member 130 that can close the orifice 126 in the lower water storage chamber 128 of the second tank 115.
- the blocking member 130 has a specific gravity smaller than that of the washing water. Therefore, the closing member 130 floats on the cleaning water in the second tank 115. Therefore, if the level of the cleaning water in the second tank 115 is equal to or higher than a predetermined level, the closing member 130 closes the orifice 126 from the lower side by buoyancy.
- the closing member 130 When the supply of the washing water from the first tank 110 to the toilet bowl 11 is started, the closing member 130 tries to close the orifice 126 from below by buoyancy at the initial stage of the supply. For this reason, the flow rate of the washing water passing through the orifice 126 is reduced as compared with the case where the closing member 130 is not provided. The flow rate when passing through the orifice 126 at this time is affected by the buoyancy acting on the closing member 130 and fluctuates due to the difference in the level of the cleaning water in the second tank 115 and the first tank 110.
- the flow rate of the cleaning water pumped by the pump 120 is decreased before the gas starts to pass through the orifice 126, the difference in water level between the first tank 110 and the second tank 115 is reduced.
- the flow rate of the wash water passing therethrough can be reduced, and the occurrence of siphon action in the toilet drainage channel 12 can be delayed.
- the flush toilet of the sixth embodiment is different from the third embodiment in the flush water control device 131 of the toilet bowl cleaning device 330.
- Other configurations are the same as those of the third embodiment, and the same configurations are denoted by the same reference numerals, and detailed description thereof is omitted.
- the flush toilet has the first tank 110 installed at a position higher than the toilet bowl 11. For this reason, the maximum water storage level in the first tank 110 and the second tank 115 is sufficiently higher than that of the toilet bowl 11.
- the toilet bowl cleaning device 330 includes a water supply electromagnetic opening / closing valve 121 in the middle of the water supply channel 114 and a water supply flow control valve 132 disposed downstream of the water supply electromagnetic opening / closing valve 121 (toilet bowl 11 side). ing.
- the cleaning water control device 131 is configured by the form in which the valve 132 is provided.
- the siphon action can be reliably generated in the toilet drainage channel 12, and filth etc. can be removed from the toilet bowl. It can be discharged well outside the main body. Further, if the flow rate of the cleaning water supplied to the toilet bowl 11 is reduced by adjusting the water supply flow rate control valve 132, it is possible to prevent the filth from being sucked into the air passage 118. In addition, at the same time as the washing water starts to flow out to the toilet bowl 11 side or after the washing water starts to flow out to the toilet bowl 11, the ventilation electromagnetic on-off valve 123 of the ventilation path 118 is switched to the open state.
- the third invention is not limited to the third to sixth embodiments described with reference to the above description and drawings.
- the following embodiments are also included in the technical scope of the present invention.
- the second tank is arranged inside the first tank, but the second tank may be arranged outside the first tank.
- the position of the first tank is arranged at substantially the same height as the toilet bowl, but the first tank may be arranged at a position higher than the toilet bowl.
- a pump capable of adjusting the flow rate of cleaning water to be pumped as the cleaning water control device was used.
- a flow rate control valve may be used as the cleaning water control device instead of the pump.
- the cleaning water control device may be configured by a pump that cannot adjust the flow rate of the cleaning water to be adjusted and a flow rate control valve provided on the downstream side of the pump.
- a ventilation electromagnetic on-off valve is provided in the ventilation path as an intake control device for controlling the intake operation from the toilet drainage path to the second tank.
- a control valve may be provided, and a flow rate control valve may be provided in addition to the venting electromagnetic on-off valve. Further, the intake control device may not be provided.
- an electromagnetic on-off valve may be provided in the ventilation channel, or a flow control valve may be provided. An electromagnetic on-off valve and a flow control valve may be provided.
- the intake control device according to the fourth or fifth embodiment may be applied to the sixth embodiment.
- Example 6 as the washing water control device, the first tank is installed at a position higher than the toilet bowl to increase the water head pressure in the first tank, and an electromagnetic on-off valve and a flow control valve are provided in the water supply channel.
- a pump and an electromagnetic on-off valve may be provided in the water supply channel as in the third to fifth embodiments.
- the outlet may be provided in the upper part of the third tank, and the nozzle may be provided in the upper part of the third tank.
- the nozzle of the fourth aspect of the invention can inject cleaning water until air flows into the third tank from the first tank through the inlet and the water level in the third tank decreases.
- the water level in the third tank drops rapidly, and the jet pump cannot draw the cleaning water in the third tank. Stop spraying cleaning water from the nozzle.
- the supply water pressure of the cleaning water to the nozzle fluctuates, the flow rate of the cleaning water to be injected fluctuates, so the flow rate of the cleaning water in the third tank drawn into the jet pump also fluctuates.
- the water supply pressure of the cleaning water to the nozzle fluctuates, the flow rate of the cleaning water supplied to the toilet body fluctuates, but this toilet cleaning device makes the amount of cleaning water supplied to the toilet body substantially constant. be able to.
- the amount of cleaning water drawn into the jet pump until the water level in the third tank decreases is equal to the amount of cleaning water stored outside the third tank and stored in the first tank. It is constant.
- the jetting time becomes longer if the flow rate of the cleaning water jetted from the nozzle is small, and the jetting time becomes shorter if the flow rate of the cleaning water jetted from the nozzle is high. In this way, in order for the jet pump to draw a constant amount of cleaning water, the amount of cleaning water sprayed from the nozzles also ejects a substantially constant amount of water.
- this toilet wash can make the amount of washing water supplied to the toilet body substantially constant.
- the water level in the first tank when air starts to flow into the third tank from the first tank through the inlet may be changed.
- the timing of lowering the level of the wash water in the third tank is delayed.
- the pump can draw the cleaning water in the third tank for a long time. For this reason, the amount of washing water supplied to the toilet bowl body by the toilet bowl cleaning device can be increased.
- a communication path that connects the lower portion of the first tank and the nozzle, and a water supply device that is provided in the communication path and that supplies the cleaning water stored in the first tank to the nozzle. obtain.
- the cleaning water can be supplied to the nozzle using the water supply device, the stable high water pressure cleaning water can be supplied to the nozzle.
- the jet pump can draw in the wash water in the third tank strongly, and a large flow of wash water can be stably supplied to the toilet body via the water supply channel 114.
- the flush toilet of Example 7 includes a toilet main body 10 and a toilet cleaning device 220 that supplies cleaning water to the toilet main body 10.
- the toilet body 10 includes a toilet bowl 11 and a toilet drainage channel 12 communicating with the downstream side of the toilet bowl 11.
- the toilet bowl cleaning device 220 is arranged behind the toilet body 10 and at a position lower than the upper surface of the toilet body 10. For this reason, this flush toilet has a low silhouette.
- the toilet bowl cleaning device 220 includes a first tank 221, a second tank 222, a jet pump 223, and a water supply channel 224. Wash water flows into the first tank 221 through a tank water supply path 225 that communicates with a water pipe that is a water supply source.
- the tank water supply path 225 has a tank water supply valve 225V provided at the downstream end.
- the first tank 221 can store wash water that has flowed in via the tank water supply channel 225.
- the second tank 222 is disposed in the first tank 221.
- the second tank 222 has an inflow port 222A that opens downward near the lower part of the first tank 221.
- the second tank 222 has an outlet 222B at the upper end.
- a branch water supply passage 227 for supplying cleaning water to an injection nozzle 226 described later is inserted in a watertight manner from the upper surface.
- the opening area of the outlet 222B is formed larger than the opening area of the injection port 226A of the injection nozzle 226.
- the water supply channel 224 communicates the outlet 222 ⁇ / b> B and the toilet body 10.
- This water supply path 224 extends continuously from the opening edge of the outlet 222B.
- the flow passage area of the water supply passage 224 is formed larger than the opening area of the injection port 226A of the injection nozzle 226.
- the water supply channel 224 has an ascending slope that extends obliquely upward to reach the upper rear end of the toilet body 10, and the water outlet 224 ⁇ / b> A at the downstream end extends along the upper peripheral edge of the toilet bowl 11 of the toilet body 10. It is arranged to discharge the washing water. For this reason, the wash water discharged from the water outlet 224 ⁇ / b> A of the water supply channel 224 can flow in one direction along the surface of the toilet bowl 11 and form a swirling flow in the toilet bowl 11.
- the outlet 222B of the second tank 222 is formed at the upper end of the second tank 222, the water supply path 224 is not long, and the water supply path 224 does not have an ascending gradient. For this reason, the pressure loss of the washing water passing through the water supply channel 224 can be reduced.
- the jet pump 223 has an injection nozzle 226 disposed in a position facing the outflow port 222B of the second tank 222 with a gap in the second tank 222.
- the jet pump 223 includes a second tank outlet 222B and an injection nozzle 226.
- the injection nozzle 226 is provided in the upper part of the second tank 222 and directs the washing water to the outlet 222B so that the jetted washing water flows along the water supply channel 224.
- the jet pump 223 is disposed on the upper portion of the second tank 222. Wash water flows into the injection nozzle 226 through a branch water supply path 227 that branches from the tank water supply path 225.
- the branch water supply path 227 has an injection nozzle valve 227V.
- the cleaning water flowing from the tank water supply channel 225 flows into the first tank 221. Further, the washing water also flows into the second tank 222 from the lower part of the first tank 221 through the inlet 222A of the second tank 222. That is, the flush toilet bowl is in a standby state before flushing the toilet bowl by storing flush water in the first tank 221 and the second tank 222 in a full state. In this standby state, the tank water supply valve 225V and the injection nozzle valve 227V are closed.
- the water pressure in the first tank 221 causes the first
- the wash water flows from the two tanks 222 into the water supply passage 224 communicating with the downstream side. That is, the second tank 222 is filled with the wash water, and the level of the wash water in the water supply path 224 rises to a position higher than the wash water level in the first tank 221 outside the second tank 222. Yes.
- the injection nozzle valve 227V is opened as shown in FIG. Then, washing water is ejected from the ejection port 226A of the ejection nozzle 226, and the washing water in the second tank 222 is drawn.
- the washing water jetted from the jet port 226 ⁇ / b> A of the jet nozzle 226 joins the washing water in the second tank 222 drawn into the jet nozzle 226, and the washing water is supplied to the toilet body 10 through the water supply path 224.
- the wash water having a flow rate of about 3 to 4 times the flow rate of the wash water ejected from the ejection port 226A of the ejection nozzle 226 can be supplied to the toilet body 10.
- the toilet cleaning device 220 can supply a large flow of cleaning water to the toilet body 10.
- the washing water in the second tank 222 is drawn by the jet pump 223 and a large flow of washing water starts to be supplied to the toilet body 10, and at the same time, the washing water in the lower part of the first tank 221 flows into the inlet of the second tank 222. It flows into the second tank 222 through 222A. As a result, the level of the cleaning water in the first tank 221 decreases. At this time, the wash water in the second tank 222 is affected by the water pressure of the wash water in the first tank 221, and the inside of the second tank 222 is kept full with the wash water. For this reason, the jet pump 223 can maintain a state where it is submerged in the cleaning water in the second tank 222. Therefore, the jet pump 223 can continue to draw the wash water in the second tank 222 and can continue to supply a large flow of wash water to the toilet body 10.
- the level of the cleaning water in the first tank 221 further decreases, and the level of the cleaning water in the first tank 221 decreases from the inlet 222A of the second tank 222. To do. Then, air flows into the second tank 222 from the first tank 221 via the inflow port 222A of the second tank 222, and the water level of the cleaning water in the second tank 222 decreases at a stretch. For this reason, the jet pump 223 is exposed in the second tank 222, and the jet pump 223 cannot draw the cleaning water.
- the toilet bowl cleaning device 220 has a water level sensor (for example, a float sensor) (not shown) that detects the water level in the second tank 222.
- a water level sensor for example, a float sensor
- the toilet bowl cleaning device 220 The nozzle valve 227V is closed. In this way, the supply of the washing water to the toilet body 10 is finished. That is, the injection nozzle 226 injects cleaning water until air flows into the second tank 222 from the first tank 221 through the inlet 222A and the water level in the second tank 222 decreases.
- the flow rate of the cleaning water to be injected changes, so the flow rate of the cleaning water in the second tank 222 drawn into the jet pump 223 also changes.
- the flow rate of the washing water supplied to the toilet main body 10 fluctuates.
- the amount of cleaning water supplied can be made substantially constant.
- the amount of cleaning water drawn into the jet pump 223 before the water level in the second tank 222 decreases is substantially equal to the amount of cleaning water stored outside the second tank 222 and stored in the first tank 221. Since they are equal, they are substantially constant.
- the jet pump 223 draws a fixed amount of cleaning water, if the flow rate of cleaning water injected from the injection port 226A of the injection nozzle 226 is small, the injection time becomes longer, and the cleaning water injected from the injection port 226A of the injection nozzle 226 becomes longer. The greater the flow rate, the shorter the ejection time.
- the amount of cleaning water injected from the injection port 226A of the injection nozzle 226 also injects a substantially constant amount of water. For this reason, the flow rate of the wash water supplied from the injection port 226 ⁇ / b> A of the injection nozzle 226 varies, and the flow rate of the wash water in the second tank 222 to be drawn fluctuates. Even if it fluctuates, the amount of washing water supplied to the toilet body 10 by the toilet bowl cleaning device 220 can be made substantially constant.
- the tank water supply valve 225V is opened, the cleaning water is caused to flow into the first tank 221 from the tank water supply path 225, and the cleaning water is stored in the first tank 221 and the second tank 222.
- the flush toilet is returned to the standby state before toilet flush. In this way, one cycle of the toilet bowl cleaning process is completed.
- This flush toilet can realize a low silhouette by disposing the toilet cleaning device 220 behind the toilet body 10 and at a position lower than the upper surface of the toilet body 10. Further, in this flush toilet, since the jet pump 223 is arranged at the upper part of the second tank 222, the water supply path 224 is not lengthened and the ascending gradient of the water supply path 224 does not become steep. The pressure loss of the washing water can be reduced, and a large flow of washing water can be supplied to the toilet body 10.
- the toilet bowl cleaning device 220 allows the jet pump 223 to draw the cleaning water in the second tank 222 until most of the cleaning water in the first tank 221 flows into the second tank 222, and It is possible to supply cleaning water at a flow rate for a long time. In other words, this flush toilet can use most of the wash water stored in the first tank 221 and the second tank 222.
- the flush toilet of Example 7 has a degree of freedom in the installation position of the toilet cleaning device 220 and can perform toilet cleaning well.
- the flush toilet bowl of the eighth embodiment has a second bellows-like side surface 231B of the second tank 231 of the toilet bowl cleaning device 230, whereby the second tank 221 is connected to the second tank 231A via the inlet 231A.
- the difference from the seventh embodiment is that the water level in the first tank 221 when air starts to flow into the tank 231 can be changed.
- Other configurations are the same as those of the seventh embodiment, and the same configurations are denoted by the same reference numerals, and detailed description thereof is omitted.
- the toilet flushing device 230 of the flush toilet When the toilet flushing device 230 of the flush toilet is configured to expand and contract the bellows portion of the side surface 231B of the second tank 231, the air starts to flow into the second tank 231 from the first tank 221 through the inlet 231A.
- the water level in the first tank 221 can be changed. For this reason, the amount of washing water supplied to the toilet body 10 can be changed.
- the bellows portion of the side surface 231B of the second tank 231 is extended, and the inlet 231A of the second tank 231 is disposed below the first tank 221.
- the water level in the first tank 221 when air starts to flow from the first tank 221 to the second tank 231 via the inflow port 231A can be lowered.
- the timing of lowering the level of the washing water in the second tank 231 can be delayed, so that the jet pump 223 draws the washing water in the second tank 231 for a long time. Can do. For this reason, the amount of washing water supplied to the toilet body 10 by the toilet bowl cleaning device 3 can be increased.
- the amount of water stored in the first tank 221 above the inlet 231 ⁇ / b> A and outside the second tank 231 (FIG. 23A
- the amount of water substantially equal to the portion X) can be supplied to the toilet body 10.
- the bellows portion of the side surface 231B of the second tank 231 is contracted, and the inlet 231A of the second tank 231 is disposed at a high position.
- the water level in the first tank 221 when air starts to flow into the second tank 231 from the first tank 221 through the inlet 231A can be increased. If it does in this way, after starting toilet bowl washing
- the amount of water stored in the first tank 221 above the inflow port 231 ⁇ / b> A and outside the second tank 231 (FIG. 23B
- the amount of water substantially equal to the Y portion shown in ()) (a smaller amount of water than when the bellows portion of the side surface 231B of the second tank 231 is extended) can be supplied to the toilet body 10.
- the toilet flushing device 230 of the flush toilet according to the eighth embodiment can easily change the amount of flushing water supplied to the toilet body 10, so that the flushing water required for toilet flushing can be changed. It is possible to easily cope with a plurality of types of toilet main bodies 10 having different amounts of water.
- Example 9 The flush toilet of Example 9 is different from Example 7 in that it is a toilet flushing device 240 that can replace a plurality of second tanks 241 and 242 with different vertical dimensions of the side surfaces, as shown in FIG. To do.
- Other configurations are the same as those of the seventh embodiment, the same configurations are denoted by the same reference numerals, and detailed description thereof is omitted.
- the inlet 241A of the second tank 241 is arranged at the lower part of the first tank 221 by attaching the second tank 241 having a long side surface in the first tank 221. To do.
- the water level in the first tank 221 when air starts to flow from the first tank 221 to the second tank 241 via the inflow port 241A can be lowered.
- the timing of lowering the level of the washing water in the second tank 241 can be delayed, so that the jet pump 223 draws the washing water in the second tank 241 for a long time. Can do. For this reason, the amount of washing water supplied to the toilet body 10 by the toilet bowl cleaning device 240 can be increased.
- the amount of water stored in the first tank 221 above the inlet 241 ⁇ / b> A and outside the second tank 241 (FIG. 24A
- the amount of water substantially equal to the portion X) can be supplied to the toilet body 10.
- the inlet 242A of the second tank 242 is disposed at a high position by mounting the second tank 242 having a short side surface in the first tank 221. Accordingly, the water level in the first tank 221 when air starts to flow from the first tank 221 to the second tank 242 via the inflow port 242A can be increased. If it does in this way, after starting toilet bowl washing
- the amount of water stored in the first tank 221 above the inflow port 242A and outside the second tank 242 (FIG. 24B
- the amount of water substantially equal to the Y portion shown in FIG. 6) (a smaller amount of water than the case where the second tank 241 having a long vertical dimension on the side surface is attached) can be supplied to the toilet body 10.
- the toilet flushing apparatus 240 of the flush toilet bowl of Example 9 can change easily the amount of the wash water supplied to the toilet bowl main body 10, the wash water required in the case of toilet flushing It is possible to easily cope with a plurality of types of toilet main bodies 10 having different amounts of water.
- the flush toilet of the tenth embodiment includes a communication passage 228 in which the toilet cleaning device 250 communicates the lower portion of the first tank 221 and the injection nozzle 226, and the communication passage 228.
- the present embodiment is different from the seventh embodiment in that it includes a pump P that is a water supply device that supplies cleaning water stored in the tank 221 to the injection nozzle 226.
- Other configurations are the same as those of the seventh embodiment, and the same configurations are denoted by the same reference numerals, and detailed description thereof is omitted.
- the pump P In the flush toilet, in the toilet flushing process, when toilet flushing is started, the pump P is driven to inject the flush water stored in the first tank 221 from the ejection port 226A of the ejection nozzle 226, and in the second tank 222. Wash water can be drawn. Since the cleaning water is supplied to the injection nozzle 226 by using the pump P, the cleaning water having a stable high water pressure can be supplied to the injection nozzle 226. For this reason, the jet pump 223 can strongly draw the wash water in the second tank 222 and can stably supply a large flow of wash water to the toilet body 10 via the water supply channel 224.
- the fourth invention is not limited to Examples 7 to 10 described with reference to the above description and drawings.
- the second tank is arranged in the first tank, but the first tank and the second tank are arranged next to each other, and a connection path for connecting the respective lower portions is provided. Also good.
- the flow path area of the second tank is larger than that of the water supply path, but the flow path area of the second tank may be the same as the flow path area of the water supply path.
- the outlet is provided at the upper end of the second tank and the water supply channel is connected, but the outlet may be located higher than the inlet.
- the water supply channel is communicated with the upper part of the toilet bowl, and the wash water is discharged to the surface of the toilet bowl, but the water outlet at the downstream end of the water supply channel is connected to the toilet bowl. It may be provided at the lower end of the section or at the upstream end of the toilet drainage channel, and the wash water may be discharged along the toilet drainage channel.
- the cleaning water is supplied to the injection nozzle. However, when the level of the cleaning water in the first tank is above the inlet of the second tank, the supply of the cleaning water to the injection nozzle may be ended.
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Abstract
Description
洗浄水を貯水する第1タンクと、
下部開口が前記第1タンクに連通し、下方領域よりも上方領域において単位高さ当たりの貯水量を多くした第2タンクと、
前記第1タンクの最高貯水位よりも高い位置を経由して前記第2タンクと前記便器排水路とを連通する通気路と、
前記第1タンクと前記便鉢部とを連通する給水路と、
前記第1タンクに貯水した洗浄水を前記給水路を介して前記便鉢部へ供給を開始するよりも遅い時機に前記便器排水路側から前記第2タンク側へ流れる前記通気路内の気体の流量を最大にする遅延装置とを備えていることを特徴とする。
洗浄水を貯水し、下方領域よりも上方領域において単位高さ当たりの貯水量を少なくした第1タンクと、
下部開口が前記第1タンクに連通した第2タンクと、
前記第1タンクの最高貯水位よりも高い位置を経由して前記第2タンクと前記便器排水路とを連通する通気路と、
前記第1タンクと前記便鉢部とを連通する給水路と、
前記第1タンクに貯水した洗浄水を前記給水路を介して前記便鉢部へ供給を開始するよりも遅い時機に前記便器排水路側から前記第2タンク側へ流れる前記通気路内の気体の流量を最大にする遅延装置とを備えていることを特徴とする。
洗浄水が流入し、流入した洗浄水を貯水する第1タンクと、
この第1タンクの下部に連通した第2タンクと、
この第2タンクと前記便器排水路とを連通した通気路と、
前記第1タンクと前記便鉢部とを連通した給水路と、
前記第1タンクから前記便鉢部へ供給する洗浄水の流量を制御する洗浄水制御装置とを備えていることを特徴とする。
洗浄水が流入し、流入した洗浄水を貯留する第1タンクと、
この第1タンクの下部から洗浄水が流入する流入口、及びこの流入口より上方に設け、前記便器本体に連通する流出口を有しており、前記便器本体に洗浄水を供給する際、前記第1タンクから前記流入口を介して空気が流入しない状態では前記第1タンク内の洗浄水の水圧の影響を受けて、洗浄水を満水状態に維持する第3タンクと、
この第3タンク内に前記流出口と隙間を空けて対向する位置に配置し、前記流出口に向けて洗浄水を噴射するノズルを有するジェットポンプと、
前記流出口と前記便器本体とを連通する給水路とを備えていることを特徴とする。
実施例1の水洗式便器は、図1に示すように、便器本体10と、便器本体10に洗浄水を供給する便器洗浄装置20とを備えている。便器本体10は、便鉢部11と、便鉢部11の下流側に連通する便器排水路12とを備えている。便器本体10は、便鉢部11の下部と便器排水路12の上流部によって、洗浄水を貯留する水封部13を形成している。
実施例2の水洗式便器は、図7に示すように、便器洗浄装置30が第3タンク32を備え、第1タンク31内に貯水した洗浄水をジェットポンプ33を利用して便器本体10に供給する点で実施例1と相違している。他の構成は実施例1と同様であり、同一の構成は同一の符号を付し、詳細な説明を省略する。
(1)実施例1及び2では、外殻部の上部が下部に比べて水平方向に拡大した第2タンクを第1タンクの内部に収納して固定することによって、第1タンクは下方領域よりも上方領域において単位高さ当たりの貯水量を少なくしたが、図12(A)及び(B)に示すように、第2タンク44は外殻部が上下方向で変形せず、第1タンク41、42の上部を内側に凹ませることによって、下方領域よりも上方領域において単位高さ当たりの貯水量を少なくしてもよい。また、図12(C)に示すように、第1タンク43の内側の上部に、下方領域よりも上方領域において単位高さ当たりの貯水量を少なくするための直方体の別部品43Aを取り付けてもよい。
実施例3の水洗式便器は、図15に示すように、便器本体10と便器洗浄装置300とを備えている。便器本体10は、便鉢部11と、便鉢部11の下流側に連通する便器排水路12とを有している。便鉢部11は上面の開口縁に沿って形成したリム通水路14を有している。便器排水路12は上流端が便鉢部11の下端部に連通している。便器排水路12は頂部(最も高い部分)から便鉢部11の下端部までの領域が水封部13になっている。便器排水路12は、水封部13よりも下流側の位置であって、水封部13よりも上方に開口する通気口15を有している。また、便器排水路12は通気口15から下方へ延びる領域に径寸法を狭めた絞り部16を有している。
実施例4の水洗式便器は、図16に示すように、便器洗浄装置310の吸気制御装置124が実施例3と相違する。他の構成は実施例3と同様であり、同一の構成は同一の符号を付し、詳細な説明を省略する。
実施例5の水洗式便器は、図17に示すように、便器洗浄装置320の吸気制御装置129が実施例4と相違する。他の構成は実施例4と同様であり、同一の構成は同一の符号を付し、詳細な説明を省略する。
実施例6の水洗式便器は、図18に示すように、便器洗浄装置330の洗浄水制御装置131が実施例3と相違する。他の構成は実施例3と同様であり、同一の構成は同一の符号を付し、詳細な説明を省略する。
(2)実施例3~5では、第1タンクの位置を便鉢とほぼ同じ高さに配置したが、第1タンクを便鉢よりも高い位置に配置してもよい。
(3)実施例3~5では、洗浄水制御装置として圧送する洗浄水の流量を調節可能なポンプを用いたが、ポンプに替えて流量制御弁を洗浄水制御装置として用いてもよく、圧送する洗浄水の流量を調節することができないポンプとこのポンプの下流側に設けた流量制御弁とによって洗浄水制御装置を構成してもよい。
(4)実施例3、6では、便器排水路から第2タンクへの吸気動作を制御する吸気制御装置として通気路に通気用電磁開閉弁を設けたが、通気用電磁開閉弁に替えて流量制御弁を設けてもよく、通気用電磁開閉弁に加えて流量制御弁を設けてもよい。また、吸気制御装置を設けなくてもよい。
(5)実施例4、5において、便器排水路から第2タンクへの吸気動作を制御する吸気制御装置として、通気路に電磁開閉弁を設けてもよく、流量制御弁を設けてもよく、電磁開閉弁と流量制御弁を設けてもよい。
(6)実施例6に、実施例4又は実施例5の吸気制御装置を適用してもよい。
(7)実施例6では、洗浄水制御装置として、第1タンクを便鉢部よりも高い位置に設置して第1タンク内の水頭圧を高くし、給水路に電磁開閉弁と流量制御弁とを設けているが、これに替えて、実施例3~5のように給水路にポンプと電磁開閉弁を設けてもよい。
実施例7の水洗式便器は、図19に示すように、便器本体10と、便器本体10に洗浄水を供給する便器洗浄装置220とを備えている。便器本体10は、便鉢部11と、便鉢部11の下流側に連通する便器排水路12とを有している。
実施例8の水洗式便器は、図23に示すように、便器洗浄装置230の第2タンク231の側面231Bを蛇腹状に形成することによって、第1タンク221から流入口231Aを介して第2タンク231に空気が流入を開始する際の第1タンク221内の水位を変更することができる点で、実施例7と相違する。他の構成は実施例7と同様であり、同一の構成は同一の符号を付し、詳細な説明を省略する。
実施例9の水洗式便器は、図24に示すように、側面の縦寸法が相違する複数の第2タンク241、242を取り換えることができる便器洗浄装置240である点で、実施例7と相違する。他の構成は実施例7と同様であり、同一の構成は同一の符号を付し、詳細な説明を省略する。
実施例10の水洗式便器は、図25に示すように、便器洗浄装置250が第1タンク221の下部と噴射ノズル226とを連通する連通路228と、この連通路228に設けられ、第1タンク221内に貯留した洗浄水を噴射ノズル226へ送水する送水装置であるポンプPとを備えている点で、実施例7と相違する。他の構成は実施例7と同様であり、同一の構成は同一の符号を付し、詳細な説明を省略する。
(1)実施例7~10では、第1タンク内に第2タンクを配置しているが、第1タンクと第2タンクとを隣り合わせに配置し、夫々の下部を接続する接続路を設けてもよい。
(2)実施例7~10では、第2タンクが給水路よりも流路面積を大きくしているが、第2タンクの流路面積を給水路の流路面積と同じにしてもよい。
(3)実施例7~10では、第2タンクの上端部に流出口を設け、給水路を連結しているが、流出口は流入口より高い位置であればよい。
(4)実施例7~10では、給水路を便鉢部の上部に連通し、洗浄水を便鉢部の表面に吐水するようにしているが、給水路の下流端の吐水口を便鉢部の下端又は便器排水路の上流端部に設け、便器排水路に沿って洗浄水を吐水するようにしてもよい。
(5)実施例7~10では、第1タンク内の洗浄水の水位が第2タンクの流入口より低下し、第2タンク内の洗浄水の水位が低下すると噴射ノズルへの洗浄水の供給を終了するが、第1タンク内の洗浄水の水位が第2タンクの流入口より上方であるときに、噴射ノズルへの洗浄水の供給を終了してもよい。
11…便鉢部
12…便器排水路
13…水封部
20、30、60…便器洗浄装置
21、31…第1タンク
21D…(第1タンクの)下方領域
21U…(第1タンクの)上方領域
22…第2タンク
22C…(第2タンクの)下部開口
22D…(第2タンクの)下方領域
22U…(第2タンクの)上方領域
23…通気路
24、34…給水路
25…開閉弁(遅延装置)
L…最高貯水位
300、310、320、330…便器洗浄装置
110…第1タンク
115…第2タンク
114…給水路
118…通気路
119、131…洗浄水制御装置
120…ポンプ
122、124、129…吸気制御装置
125…区画壁
126…オリフィス
127…上部貯水室
128…下部貯水室
130…閉鎖部材
220、230、240、250…便器洗浄装置
221…第1タンク
222、231、241、242…第2タンク
222A、231A、241A、242A…流入口
222B…流出口
223…ジェットポンプ機構
224…給水路
226…噴射ノズル
228…連通路
P…ポンプ(送水機構)
Claims (18)
- 便鉢部と、この便鉢部の下流側に連通する便器排水路とを有する便器本体に洗浄水を供給する便器洗浄装置であって、
洗浄水を貯水する第1タンクと、
下部開口が前記第1タンクに連通し、下方領域よりも上方領域において単位高さ当たりの貯水量を多くした第2タンクと、
前記第1タンクの最高貯水位よりも高い位置を経由して前記第2タンクと前記便器排水路とを連通する通気路と、
前記第1タンクと前記便鉢部とを連通する給水路と、
前記第1タンクに貯水した洗浄水を前記給水路を介して前記便鉢部へ供給を開始するよりも遅い時機に前記便器排水路側から前記第2タンク側へ流れる前記通気路内の気体の流量を最大にする遅延装置とを備えていることを特徴とする便器洗浄装置。 - 前記第1タンクは下方領域よりも上方領域において単位高さ当たりの貯水量を少なくしたことを特徴とする請求項1記載の便器洗浄装置。
- 便鉢部と、この便鉢部の下流側に連通する便器排水路とを有する便器本体に洗浄水を供給する便器洗浄装置であって、
洗浄水を貯水し、下方領域よりも上方領域において単位高さ当たりの貯水量を少なくした第1タンクと、
下部開口が前記第1タンクに連通した第2タンクと、
前記第1タンクの最高貯水位よりも高い位置を経由して前記第2タンクと前記便器排水路とを連通する通気路と、
前記第1タンクと前記便鉢部とを連通する給水路と、
前記第1タンクに貯水した洗浄水を前記給水路を介して前記便鉢部へ供給を開始するよりも遅い時機に前記便器排水路側から前記第2タンク側へ流れる前記通気路内の気体の流量を最大にする遅延装置とを備えていることを特徴とする便器洗浄装置。 - 前記第2タンクは前記下部開口が前記第1タンクの最低貯水位よりも低い高さで前記第1タンクに連通していることを特徴とする請求項1乃至3のいずれか1項記載の便器洗浄装置。
- 前記遅延装置は、前記通気路に設け、この通気路を開閉する開閉弁であることを特徴とする請求項1乃至3のいずれか1項記載の便器洗浄装置。
- 前記第2タンクは前記第1タンク内に収納されていることを特徴とする請求項1乃至3のいずれか1項記載の便器洗浄装置。
- 便鉢部と、この便鉢部の下流側に連通する便器排水路を有した便器本体に洗浄水を供給する便器洗浄装置であって、
洗浄水が流入し、流入した洗浄水を貯水する第1タンクと、
この第1タンクの下部に連通した第2タンクと、
この第2タンクと前記便器排水路とを連通した通気路と、
前記第1タンクと前記便鉢部とを連通した給水路と、
前記第1タンクから前記便鉢部へ供給する洗浄水の流量を制御する洗浄水制御装置とを備えていることを特徴とする便器洗浄装置。 - 前記洗浄水制御装置は前記給水路に設けたポンプを有していることを特徴とする請求項7記載の便器洗浄装置。
- 前記便器排水路から前記第2タンクが気体を吸引する吸気動作を制御する吸気制御装置を備えていることを特徴とする請求項7又は8記載の便器洗浄装置。
- 前記吸気制御装置はオリフィスを有する区画壁によって前記第2タンクを上部貯水室と下部貯水室とに区画して構成したことを特徴とする請求項9記載の便器洗浄装置。
- 前記下部貯水室内に洗浄水に浮くことによって前記オリフィスを閉鎖することができる閉鎖部材を設けていることを特徴とする請求項10記載の便器洗浄装置。
- 便鉢部、及びこの便鉢部の下流側に連通する便器排水路を有する便器本体と、請求項1又は7記載の便器洗浄装置とを備えていることを特徴とする水洗式便器。
- 便器本体に洗浄水を供給する便器洗浄装置であって、
洗浄水が流入し、流入した洗浄水を貯留する第1タンクと、
この第1タンクの下部から洗浄水が流入する流入口、及びこの流入口より上方に設け、前記便器本体に連通する流出口を有しており、前記便器本体に洗浄水を供給する際、前記第1タンクから前記流入口を介して空気が流入しない状態では前記第1タンク内の洗浄水の水圧の影響を受けて、洗浄水を満水状態に維持する第3タンクと、
この第3タンク内に前記流出口と隙間を空けて対向する位置に配置し、前記流出口に向けて洗浄水を噴射するノズルを有するジェットポンプと、
前記流出口と前記便器本体とを連通する給水路とを備えていることを特徴とする便器洗浄装置。 - 前記流出口は前記第3タンクの上部に貫設し、前記ノズルは前記第3タンク内の上部に設けられていることを特徴とする請求項13記載の便器洗浄装置。
- 前記ノズルは、前記第1タンクから前記流入口を介して前記第3タンク内に空気が流入し、前記第3タンク内の水位が低下するまで洗浄水を噴射することを特徴とする請求項13又は14記載の便器洗浄装置。
- 前記第1タンクから前記流入口を介して前記第3タンクに空気が流入を開始する際の前記第1タンク内の水位を変更することができる請求項15記載の便器洗浄装置。
- 前記第1タンクの下部と前記ノズルとを連通する連通路と、この連通路に設けられ、前記第1タンク内に貯水した洗浄水を前記ノズルへ送水する送水装置とを備えていることを特徴とする請求項13又は14記載の便器洗浄装置。
- 便器本体と、請求項13又は14記載の便器洗浄装置とを備えていることを特徴とする水洗式便器。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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EP12744346.3A EP2674535A1 (en) | 2011-02-10 | 2012-01-26 | Toilet cleaning device, and flush toilet |
US13/980,916 US20130291297A1 (en) | 2011-02-10 | 2012-01-26 | Toilet flushing device and flush toilet |
CA2826077A CA2826077A1 (en) | 2011-02-10 | 2012-01-26 | Toilet flushing device and flush toilet |
CN201280008468.4A CN103354856B (zh) | 2011-02-10 | 2012-01-26 | 便器冲洗装置及水洗式便器 |
KR1020137020840A KR20140015322A (ko) | 2011-02-10 | 2012-01-26 | 변기 세정 장치 및 수세식 변기 |
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JP2011-027353 | 2011-02-10 | ||
JP2011027353A JP5846740B2 (ja) | 2011-02-10 | 2011-02-10 | 洗浄装置 |
JP2011159250A JP5721575B2 (ja) | 2011-07-20 | 2011-07-20 | 便器洗浄装置及び水洗式便器 |
JP2011-159250 | 2011-07-20 | ||
JP2012008284A JP5868191B2 (ja) | 2012-01-18 | 2012-01-18 | 便器洗浄装置及び水洗式便器 |
JP2012-008284 | 2012-01-18 |
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US (1) | US20130291297A1 (ja) |
EP (1) | EP2674535A1 (ja) |
KR (1) | KR20140015322A (ja) |
CN (1) | CN103354856B (ja) |
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CN105735438A (zh) * | 2016-01-21 | 2016-07-06 | 刘光磊 | 注浆成型的气动虹吸马桶 |
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US11371228B2 (en) * | 2018-12-28 | 2022-06-28 | Kohler Co. | Flushing assembly, water supply assembly, lower position water suction assembly, water tank, check valve for use in a toilet, and method, device, and storage medium for controlling toilet water consumption |
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