Toilet bowl unit

Abstract

To provide a technology capable of flushing a toilet bowl over a wide range.SOLUTION: A toilet bowl unit may comprise: a toilet bowl connected to a drain flow passage; a water discharge passage including a first water discharge port and a second water discharge port for discharging wash water flowing from an upper end part of the toilet bowl into the toilet bowl, and a third water discharge port for discharging the wash water towards the drain flow passage; and a pump that boosts and delivers the wash water to the toilet bowl from the water discharge channel including the first water discharge port, the second water discharge port and the third water discharge port.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The technology disclosed in this specification relates to a toilet apparatus. [Background technology]

[0002] Patent Document 1 discloses a toilet apparatus equipped with a switching mechanism that switches the flow path through which flush water supplied from a water supply section flows to either a jet flush flow path or a rim flush flow path, and a pump that pressure-pumps the flush water. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-087481 A Summary of the Invention [Problem to be solved by the invention]

[0004] When waste is discharged into the toilet bowl, there is a possibility that at least one of the waste and water droplets will splash onto the surface of the toilet bowl.

[0005] This specification provides a technology that allows flush water to flow over a wide area of ​​the toilet bowl. [Means for solving the problem]

[0006] The technology disclosed in this specification relates to a toilet device. The toilet device may include a toilet bowl that communicates with a drainage flow path, a water discharge flow path that includes a first water discharge port and a second water discharge port that discharge flushing water that flows from an upper end of the toilet bowl into the toilet bowl, and a third water discharge port that discharges the flushing water toward the drainage flow path, and a pump that pressurizes the flushing water and sends the flushing water from the water discharge flow path that includes the first water discharge port, the second water discharge port, and the third water discharge port into the toilet bowl. [Brief description of the drawings]

[0007] [Figure 1]1 is a perspective view of a toilet device according to an embodiment; [Diagram 2] FIG. 2 shows a cross-sectional view of the toilet body and toilet seat taken at the center in the left-right direction and perpendicular to the left-right direction. [Diagram 3] FIG. 2 is a block diagram showing the configuration of a discharge unit according to the embodiment. [Figure 4] 4 shows a cross-sectional view of the toilet bowl and the upper rim portion taken along the line IV-IV in FIG. 2. [Diagram 5] FIG. 2 shows a side view of the discharge portion of the embodiment. [Figure 6] FIG. 2 shows a plan view of a discharge portion of the embodiment. [Figure 7] FIG. 4 is a rear view of the switching valve according to the embodiment. [Figure 8] FIG. 2 is a plan view of a switching valve according to an embodiment. [Figure 9] 9 shows a cross-sectional view taken along line IX-IX in FIG. 8. [Figure 10] 10 shows a cross-sectional view taken along line XX in FIG. 8. [Figure 11] 1 shows a flowchart of a cleaning process according to an embodiment. [Figure 12] FIG. 2 shows an exploded perspective view of a reservoir according to an embodiment. [Figure 13] 13 shows a cross-sectional view taken along line XIII-XIII in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] (Configuration of toilet device 10) As shown in Fig. 1, the toilet apparatus 10 is a flush toilet. The toilet apparatus 10 is fixed to a floor surface when in use. The toilet apparatus 10 may be, for example, a so-called wall-hung flush toilet that is fixed to a wall.

[0009] The toilet device 10 comprises a toilet portion 12, a toilet seat 14, a functional portion 16, a reservoir 18 (see FIG. 2), a water supply opening / closing valve 19, a water discharge portion 40 (see FIG. 3), a control portion 100, and a seating sensor 90. FIG. 2 shows a cross-sectional view perpendicular to the left-right direction at the left-right center of a toilet bowl 22. As shown in FIG. 2, the toilet portion 12 comprises a toilet body 20 and an upper end rim portion 30. The toilet body 20 is made of ceramic. The toilet body 20 comprises a toilet bowl 22 that receives waste. The toilet body 20 accommodates a reservoir 18 at the lower end of the toilet body 20. The reservoir 18 stores flushing water for flushing the toilet bowl 22. Water is supplied to the reservoir 18 from a clean water pipe (not shown). The water supply opening / closing valve 19 switches between communication and blocking between the clean water pipe and the reservoir 18. The toilet device 10 is equipped with a flush button (not shown) that is electrically connected to the water discharger 40. When the flush button is operated by a user, a flushing process is executed in which flush water is discharged from the reservoir 18 via the water discharger 40 into the toilet bowl 22. The functional unit 16 may have functions such as an opening and closing function that automatically opens and closes the toilet lid (not shown) in accordance with the user's actions, a local cleaning function, a hot air drying function, a deodorizing function, etc.

[0010] In the toilet apparatus 10, the flushing process may be performed by operating a lever arranged on the toilet apparatus 10, in addition to operating the flush button. The flush button may be arranged on a remote controller that is electrically connected to the water discharger 40 either wired or wirelessly. Flush water in the reservoir 18 may be supplied to the toilet bowl 22 without any operation by the user. For example, when the user is not detected by the sensor, flush water in the reservoir 18 may be supplied to the toilet bowl 22. In the toilet apparatus 10, either of two types of flushing processes, a large flushing process and a small flushing process, is performed according to at least one of the user's operation and settings. For example, the flush button has a plurality of buttons that can select either a large flush or a small flush, and either of the two types of flushing processes, a large flushing process and a small flushing process, is performed according to the button selected by the user.

[0011] The toilet seat 14 is attached to the toilet bowl body 20 so as to be openable and closable. A user sits on the toilet seat 14. The toilet seat 14 has an opening 14a. A seating sensor 90 is disposed on the toilet seat 14. When a user sits on the toilet seat 14, the toilet seat 14 moves downward. The seating sensor 90 detects the up and down movement of the toilet seat 14, thereby detecting the user sitting and leaving the seat. In a modified example, the seating sensor 90 may be a contact sensor, an infrared sensor, a capacitance sensor, or the like, that directly detects the user. Instead of the seating sensor 90, a human presence sensor (e.g., an infrared sensor, a camera, etc.) that detects the user may also be used.

[0012] Hereinafter, the direction in which the toilet seat 14 and the functional part 16 are arranged is referred to as the front-rear direction. In the front-rear direction, the side on which the toilet seat 14 is arranged with respect to the functional part 16 is referred to as the front side of the front-rear direction, and the opposite side is referred to as the rear side. The horizontal direction perpendicular to the front-rear direction is referred to as the left-right direction. In the left-right direction, the rear side of the paper in FIG. 1 is referred to as the right side, and the front side of the paper in FIG. 1 is referred to as the left side. The left and right directions correspond to the left and right as seen by a user facing the toilet device 10. The vertical direction perpendicular to the front-rear direction is referred to as the up-down direction. In the up-down direction, the side on which the reservoir 18 is arranged with respect to the toilet body 20 is referred to as the lower side, and the opposite side is referred to as the lower side.

[0013] The toilet bowl 22 has a shape that is generally recessed downward. As shown in Figure 2, the toilet bowl 22 has a water-retaining section 24 that is located at the lower end of the toilet bowl 22. The toilet body 20 has a drain pipe 36 that communicates with the water-retaining section 24, and a drain outlet 34 that opens into the water-retaining section 24. Water is retained in the water-retaining section 24 up to the water level WS. The water level WS coincides with the curved position 36a of the drain pipe 36. In other words, when flush water is not being supplied to the toilet bowl 22, the area below the water level WS is referred to as the water-retaining section 24.

[0014] The water collecting section 24 is connected to a drain pipe 36 through a drain outlet 34. The drain pipe 36 extends upward from the drain outlet 34. The drain pipe 36 bends downward at a curved position 36a and extends downward. The drain pipe 36 extends to the outside of the toilet bowl section 12.

[0015] An upper rim portion 30 is disposed at the upper end of the toilet bowl 22, going around the upper edge 22a of the toilet bowl 22. The upper rim portion 30 is disposed at the upper end of the toilet body 20. The upper rim portion 30 protrudes inward from the upper edge 22a so as to face the surface of the toilet bowl 22. The underside 30a of the upper rim portion 30 is disposed vertically in the up-down direction.

[0016] The toilet bowl 22 has a front surface 23, a side surface 26, and a rear surface 25 in an area above the water collecting portion 24. The front surface 23 is a surface located in front of the front edge WS1 of the water surface WS. The side surface 26 is a surface that extends rearward from the rear end of the front surface 23 along both the left and right ends of the water surface WS. The side surface 26 extends in the rear direction to a position lined up with the rear edge of the water surface WS. The rear surface 25 is a region that connects the rear ends of the side surfaces 26 on both the left and right sides along the rear edge WS2 of the water surface WS.

[0017] The front surface 23 has a linear shape 23a that slopes backward, i.e., toward the water surface WS, as it proceeds downward from the upper edge 22a, and a curved shape 23b that curves downward from the lower end of the linear shape 23a to the water surface WS. In the "curved shape that curves downward", in a cross section perpendicular to the left-right direction, a line segment representing a surface located between any two points of the curved shape is located below the line connecting the any two points. The linear shape 23a extends in the tangential direction of the curved shape 23b. The boundary between the linear shape 23a and the curved shape 23b is smooth and continuous without any step. The front surface 23 has a curved shape 23b that has a curved shape that curves downward in a cross section perpendicular to the front-back direction at any position in the front-back direction. The front surface 23 is similar in a cross section perpendicular to the left-right direction at any position in the left-right direction of the toilet bowl 22. The front surface 23 does not have a shape that bulges upward.

[0018] In a cross section perpendicular to the left-right direction at the left-right center of toilet bowl 22, the portion of water collecting section 24 located below front surface 23 has a linear shape that slopes backward as it extends downward.

[0019] The linear shape 23a has a plane that slopes downward from the upper edge 22a toward the water surface WS in a cross section perpendicular to the front-rear direction at any position in the front-rear direction. The curved shape 23b curves downward from the lower end of the linear shape 23a to the water surface WS in a cross section perpendicular to the front-rear direction at any position in the front-rear direction.

[0020] The side surface 26 has different shapes in the front and rear portions in a cross section perpendicular to the front-rear direction. The front portion of the side surface 26 has a curved shape that continues from the front surface 23 and curves downward. The curved shape extends beyond the water surface WS to the water pool 24. As shown in FIG. 4, the side surface 26 has a straight line shape 26a that slopes downward from the upper edge 22a toward the water surface WS, a curved shape 26b that curves downward at an intermediate position between the lower end of the straight line shape 26a and the water surface WS, and a curved shape 26c that curves upward from the lower end of the curved shape 26b to the water surface WS. The curved shape 26c extends beyond the water surface WS to the water pool 24. The portion that has the curved shape 26c is the rear portion, and the portion that does not have the curved shape 26c is the front portion. The boundary between the front portion and the rear portion may be the position of the drain outlet 34 in the front-rear direction.

[0021] As shown in Fig. 2, in a cross section perpendicular to the left-right direction at the center of the left-right direction of the toilet bowl 22, the rear surface 25 has a straight line shape 25a that slopes forward, i.e., toward the water surface WS, as it proceeds downward from the upper end edge 22a, a curved shape 25b that curves downward at an intermediate position between the bottom end of the straight line shape 25a and the water surface WF, and a curved shape 25c that curves upward from the bottom end of the curved shape 25b to the water surface WS. The straight line shape 25a may be parallel to the up-down direction. The rear surface 25 is located behind the rear end edge of the opening 14a of the toilet seat 14. This makes it difficult for the user to see the rear surface 25.

[0022] (Configuration of the water outlet) Water discharger 40 discharges flush water in reservoir 18 into toilet bowl 22. In addition, water discharger 40 discharges foam generated by mixing a surfactant and water into toilet bowl 22. As shown in FIG. 3, water discharger 40 includes a pump 42, a connecting pipe 44, a check valve 45, a switching valve device 46, branch pipes 48a, 48b, 48c, 48d, water discharge nozzles 50 and 52, a water discharge opening 54, and a foam discharger 61.

[0023] The pump 42 draws in the wash water in the reservoir 18 and pressurizes it. The pump 42 sends the pressurized wash water to the communicating pipe 44. The communicating pipe 44 is in communication with the pump 42. The communicating pipe 44 defines a flow path through which the wash water flows. The communicating pipe 44 is in communication with the switching valve device 46 via a check valve 45. The check valve 45 allows the wash water to flow from the pump 42 toward the switching valve device 46. The check valve 45 restricts the wash water from flowing from the switching valve device 46 toward the pump 42. This makes it possible to prevent the wash water from flowing back to the pump 42 via the communicating pipe 44. By arranging the check valve 45 closer to the pump 42 than the switching valve device 46, the number of check valves 45 can be reduced.

[0024] The switching valve device 46 connects the communication pipe 44 to at least one of the branch pipes 48a, 48b, 48c, and 48d. The communication pipe 44 and the branch pipes 48a, 48b, and 48c are each made of a resin such as a synthetic resin. The branch pipes 48a and 48b use synthetic rubber in at least one of the connection parts between the pump 42 and the water discharge nozzles 50 and 52 to improve liquid tightness. The branch pipe 48d has an upstream portion 48e extending from the pump 42 made of the same resin as the branch pipe 48a. Meanwhile, downstream of the upstream portion 48e of the branch pipe 48d, a downstream portion 48f disposed in the toilet body 20 is disposed. The downstream portion 48f is made of ceramic.

[0025] A water discharge nozzle 50 is connected to the branch pipe 48a. When the communication pipe 44 is connected to the branch pipe 48a via the switching valve device 46, flush water is discharged from the water discharge nozzle 50 into the toilet bowl 22. A spreader 60 of the foam discharge section 61 is connected to the branch pipe 48b. When the communication pipe 44 is connected to the branch pipe 48b via the switching valve device 46, flush water is discharged from the spreader 60 into the toilet bowl 22. A water discharge nozzle 52 is connected to the branch pipe 48c. When the communication pipe 44 is connected to the branch pipe 48c via the switching valve device 46, flush water is discharged from the water discharge nozzle 52 into the toilet bowl 22. A water discharge opening 54 is connected to the branch pipe 48d. When the communication pipe 44 is connected to the branch pipe 48d via the switching valve device 46, flush water is discharged from the water discharge opening 54 into the toilet bowl 22.

[0026] As shown in FIG. 4, the water-spouting nozzles 50, 52 and the spreader 60 are arranged side by side in the left-right direction. The water-spouting nozzle 50 is arranged near the upper end of the toilet bowl 22. The water-spouting nozzle 50 has an opening 50a that is long in the vertical direction. The water-spouting nozzle 52 is arranged symmetrically with the water-spouting nozzle 50. The water-spouting nozzles 50, 52 and the spreader 60 are arranged behind the front end WS1 of the water surface WS. The water-spouting nozzles 50, 52 and the spreader 60 are arranged behind the rear end WS2 of the water surface WS. The water-spouting nozzles 50, 52 and the spreader 60 each have an opening that extends in the vertical direction. The flushing water discharged from the water-spouting nozzles 50, 52 flows into the toilet bowl 22 that is located below the upper end rim portion 30. The upper end rim portion 30 is formed of a single flat plate, and flushing water does not flow inside.

[0027] As shown in Fig. 2, the water discharge opening 54 opens into the water storage section 24. The water discharge opening 54 opens from the front side towards the drain outlet 34 at the back side. When flush water is discharged from the water discharge opening 54, the flush water from the water discharge opening 54 is discharged towards the drain outlet 34. The flush water in the water storage section 24 is drained into the drain pipe 36 together with the flush water from the water discharge opening 54. Waste in the water storage section 24 and any objects floating in the water in the water storage section 24 are also discharged from the drain pipe 36 to the outside of the toilet body 20.

[0028] Flush water discharged from the water discharge nozzle 50 flows near the top of the toilet bowl 22 along the upper rim portion 30. The flow path of flush water defined by the water discharge nozzle 50 from the branch pipe 48a is called the left rim flow path. Flush water discharged from the water discharge nozzle 52 flows near the top of the toilet bowl 22 along the upper rim portion 30. The flow path of flush water defined by the water discharge nozzle 52 from the branch pipe 48c is called the right rim flow path. Flush water discharged from the water discharge nozzles 50, 52 flows downward from near the top. Flush water discharged from the water discharge nozzles 50, 52 flows over a wide area of ​​the toilet bowl 22 from the top to the bottom. Flush water discharged from the spreader 60 collides with the spreader 60 from the branch pipe 48b, spreads out in all directions, and is discharged into the toilet bowl 22. The flow path of flush water defined by the spreader 60 from the branch pipe 48b is called the spreader flow path. The flush water discharged from the water discharge opening 54 functions as a so-called jet water discharge that drains dirt and the like from the water pooling section 24. The flush water flow path defined by the water discharge opening 54 from the branch pipe 48d is called a jet flow path.

[0029] As shown in Fig. 3, the foam discharge unit 61 includes a foam valve 62, an ejector 64, supply pipes 65 and 66, a spreader 60, and a storage reservoir 68. The ejector 64 communicates with the check valve 45 via the supply pipe 65. A foam valve 62 is disposed in the supply pipe 65. The foam valve 62 switches between a state in which the check valve 45 and the ejector 64 communicate with each other via the supply pipe 65, and a state in which the supply pipe 65 is blocked to block the check valve 45 and the ejector 64. The supply pipes 65 and 66 are made of the same resin as the communication pipe 44.

[0030] A storage reservoir 68 is connected to the ejector 64. A surfactant such as detergent is stored in the storage reservoir 68. A communication pipe 68a extending from the storage reservoir 68 communicates with the ejector 64. An air pipe 69 (see FIG. 6) communicates with the ejector 64. The air pipe 69 communicates with the atmosphere. The ejector 64 generates negative pressure in the ejector 64 by reducing the flow path cross-sectional area of ​​the flushing water supplied from the supply pipe 65. The negative pressure generated in the ejector 64 draws the surfactant and air into the ejector 64. As a result, the flushing water, the surfactant, and the air are mixed, and foam is generated. A supply pipe 66 that communicates the ejector 64 with the spreader 60 is connected to the downstream side of the ejector 64. The foam generated in the ejector 64 passes through the supply pipe 66 and is discharged from the spreader 60 to the toilet bowl 22. The supply pipe 66 merges with the branch pipe 48b downstream of the ejector 64. A check valve is disposed at the downstream end of the ejector 64 to prevent wash water from flowing back from the branch pipe 48b to the ejector 64. The supply pipe 66 downstream from the position where the branch pipe 48b merges defines a spreader flow path.

[0031] Figures 5 and 6 show the configuration of each part of the water discharger 40. All parts of the water discharger 40, except for the branch pipe 48d and the water discharge opening 54, are housed in the toilet body 20 at the rear side of the toilet bowl 22. In the toilet body 20, each part of the water discharger 40 is housed in a small space. In each of Figures 5 and 6, some of the configuration has been simplified to prioritize ease of viewing.

[0032] The spreader 60 is attached to the rear surface 25 at the rear side of the toilet bowl 22. The spreader 60 is inserted into a through hole penetrating the toilet body 20 and fixed to the toilet body 20. The spreader 60 protrudes from the rear surface 25 to the inside of the toilet bowl 22. The spreader 60 has one or more outlets in each of the up, down, left and right directions. The flush water and foam flowing into the spreader 60 from the supply pipe 66 collide with the front part of the spreader 60 and spread in the up, down and left and right directions. The collided flush water and foam are discharged from the multiple outlets of the spreader 60 into the toilet bowl 22. This allows the flush water and foam discharged from the spreader 60 to be discharged from the multiple outlets in multiple directions, upward, downward, left and right. This makes it easier to spread the flush water and foam over the surface of the toilet bowl 22.

[0033] The reservoir 18 extends to the right side of the toilet body 20, close to the upper end of the toilet body 20. A water level sensor 17 is disposed at the upper end of the reservoir 18. The water level sensor 17 is equipped with a float that rises above the water surface when the water level in the reservoir 18 reaches a predetermined position, and a sensor unit that detects whether the float is floating or not. A water supply opening / closing valve 19 is disposed at the upper end of the reservoir 18. The water supply opening / closing valve 19 switches between communication and cut-off between the reservoir 18 and the clean water pipe.

[0034] (Configuration of switching valve device) The configuration of the switching valve device 46 will be described with reference to Fig. 7 to Fig. 10. The switching valve device 46 includes one inlet pipe 70, a housing 71, four switching valves 72, 74, 76, 78, and four outlet pipes 80, 82, 84, 86. The inlet pipe 70 has a cylindrical shape extending upward from the lower end of the switching valve device 46. The inlet pipe 70 is connected to the communication pipe 44 at the upstream end downstream of the check valve 45. The inlet pipe 70 is connected to the housing 71 at the downstream side. The four switching valves 72, 74, 76, 78 are arranged in the housing 71.

[0035] As shown in FIG. 9, an inlet pipe 70 is branched into four parts in a housing 71 so as to be connected to four switching valves 72, 74, 76, and 78, respectively.

[0036] As shown in Fig. 10, the switching valve 72 includes a primary flow path 72a, a secondary flow path 72b, a diaphragm valve 72d, a spring 72e, an electromagnetic valve 91, and communication flow paths 72h, 72j, and 72k. The primary flow path 72a is connected to a branch path 70b that branches off from an inflow flow path 70a in the inflow pipe 70. The primary flow path 72a has a circular ring-shaped flow path. A secondary flow path 72b is disposed on the inner periphery side of the primary flow path 72a. The secondary flow path 72b passes through the inner periphery of the primary flow path 72a and is connected to a discharge flow path 80a in the outflow pipe 80. The outflow pipe 80 extends upward and is connected to a branch pipe 48b.

[0037] The primary flow passage 72a and the secondary flow passage 72b are blocked by a diaphragm valve 72d. The diaphragm valve 72d has a disk shape that simultaneously blocks the downstream end of the primary flow passage 72a and the upstream end of the secondary flow passage 72b. The diaphragm valve 72d is pressed against the downstream end of the primary flow passage 72a and the upstream end of the secondary flow passage 72b by a spring 72e. The spring 72e is a coil spring disposed between the diaphragm valve 72d and a wall surface 72f that faces the diaphragm valve 72d. The spring 72e is compressed between the diaphragm valve 72d and the wall surface 72f. The spring 72e biases the diaphragm valve 72d toward the downstream end of the primary flow passage 72a and the upstream end of the secondary flow passage 72b.

[0038] A back pressure chamber 72S is defined between the diaphragm valve 72d and the wall surface 72f. The back pressure chamber 72S is located on the opposite side of the diaphragm valve 72d to the primary side flow path 72a and the secondary side flow path 72b. The back pressure chamber 72S is connected to the discharge flow path 80a via the communication flow paths 72h, 72j, and 72k. An electromagnetic valve 91 is disposed between the communication flow paths 72h and 72j. The electromagnetic valve 91 is switched between an open state in which the communication flow paths 72h and 72j communicate with each other, and a closed state in which the back pressure chamber 72S and the communication flow path 72h are blocked. The electromagnetic valve 91 includes a valve body 92, a solenoid portion 94, and a spring (not shown). The valve body 92 is biased upward by the spring to close the communication flow path 72j. The solenoid unit 94 includes a yoke, a coil, etc. When power is supplied to the coil of the solenoid unit 94, it moves the valve body 92 downward. This causes the solenoid valve 91 to transition from a closed state to an open state. While power is not supplied to the coil, the solenoid valve 91 is maintained in the closed state.

[0039] When the solenoid valve 91 is maintained in the closed state, water is sealed in the back pressure chamber 72S. Wash water sent from the pump 42 flows through the primary flow passage 72a. When the solenoid valve 91 is maintained in the closed state, even if the pump 42 is driven and the water pressure of the wash water in the primary flow passage 72a increases, the diaphragm valve 72d contacts the downstream end of the primary flow passage 72a and the upstream end of the secondary flow passage 72b to continue blocking the primary flow passage 72a and the secondary flow passage 72b. When the solenoid valve 91 is switched from the closed state to the open state, the communication flow passage 72h communicates with the communication flow passage 72j. The back pressure chamber 72S communicates with the discharge flow passage 80a via the communication flow passages 72h, 72j, and 72k. As a result, the back pressure chamber 72S is depressurized, the diaphragm valve 72d separates from the downstream end of the primary flow path 72a and the upstream end of the secondary flow path 72b, and the primary flow path 72a and the secondary flow path 72b communicate with each other. Flush water delivered from the pump 42 flows from the primary flow path 72a to the secondary flow path 72b. The flush water passes from the secondary flow path 72b through the discharge flow path 80a and flows inside the branch pipe 48d. The flush water passes through the branch pipe 48d and is discharged from the spreader 60 into the toilet bowl 22. The changeover valve 72 can be said to be a pilot valve device.

[0040] The switching valves 74, 76, and 78 each have the same configuration as the switching valve 72. When power is not supplied to the solenoid valve of the switching valve 74, the switching valve 74 is maintained in a closed state, and the communication pipe 44 and the branch pipe 48a are maintained in a blocked state in which they are blocked. When power is supplied to the solenoid valve of the switching valve 74, the switching valve 74 opens and is in a communicating state in which the communication pipe 44 and the branch pipe 48a are in communication with each other via the outflow pipe 82. Similarly, the switching valve 76 is switched between an open state and a closed state by power supply to the solenoid valve, and is switched between a blocked state between the communication pipe 44 and the branch pipe 48b and a communicating state via the outflow pipe 84. When power is supplied to the solenoid valve of the switching valve 78, the switching valve 78 is switched between an open state and a closed state by power supply to the solenoid valve, and is switched between a blocked state between the communication pipe 44 and the branch pipe 48c and a communicating state via the outflow pipe 86.

[0041] The switching valve device 46 switches between communication and cutoff of the flow paths using switching valves 72, 74, 76, and 78, which are pilot valve devices. With this configuration, the diaphragm valve 72d can be operated using a smaller actuator than when a direct acting valve device having an actuator that directly operates a valve body that switches between communication and cutoff of the primary side flow path 72a and the secondary side flow path 72b is used. This allows the switching valve device 46 to be made smaller and to consume less power.

[0042] As shown in FIG. 7, in the switching valve device 46, among the multiple switching valves 72, 74, 76, and 78, the switching valves 72 and 76 are arranged at a lower position than the switching valves 74 and 78. This allows the multiple switching valves 72, 74, 76, and 78 to communicate with one inflow pipe 70. The switching valve device 46 can be used without being limited to the number of branches by changing the number of switching valves arranged in the switching valve device 46. For example, by not arranging the switching valve 78 and blocking the branch of the inflow pipe 70, the switching valve device 46 can be used to switch a flow path that branches into three. For example, by providing one or more branches to the inflow pipe 70 and connecting the switching valves, it can be used to switch a flow path that branches into five or more branches.

[0043] (Processing by the control unit) As shown in Fig. 1, the control unit 100 is housed in the toilet body 20. The control unit 100 is communicatively connected to each of the water level sensor 17, the water supply on-off valve 19, the pump 42, the switching valve device 46, the foam valve 62, the functional unit 16, and the seating sensor 90. The control unit 100 controls the water level sensor 17, the water supply on-off valve 19, the pump 42, the switching valve device 46, the foam valve 62, the functional unit 16, and the seating sensor 90. The control unit 100 is further communicatively connected to operation units operated by the user, such as a flush button, a remote controller, etc.

[0044] The control unit 100 includes a CPU and a memory. The memory has a volatile and non-volatile storage unit. The control unit 100 controls the water level sensor 17, the water supply valve 19, the pump 42, the switching valve device 46, the foam valve 62, the function unit 16, and the seating sensor 90 by the CPU executing processing according to a computer program previously stored in the memory.

[0045] When flush water should be supplied to the toilet bowl 22 due to a user operation or the like, the control unit 100 controls the pump 42 and the switching valve device 46 to supply flush water to the toilet bowl 22 from the water discharge nozzles 50, 52, the spreader 60 and the water discharge opening 54. Waste within the toilet bowl 22 is discharged to the outside of the toilet body 20 by the flush water. In addition to flushing the toilet bowl 22 with flush water, the control unit 100 also cleans the toilet bowl 22 with foam.

[0046] After the power of the toilet apparatus 10 is switched on, the control unit 100 executes a flushing process that continuously supplies flush water to the toilet bowl 22. As shown in Fig. 11, in the flushing process, in S12, the control unit 100 determines whether or not a flushing instruction has been acquired by a user operation or the like. Aside from a user operation, the control unit 100 may determine that a flushing instruction has been acquired when, for example, the detection result of the seating sensor 90 changes from a seated state to a non-seated state. Alternatively, the control unit 100 may determine that a flushing instruction has been acquired periodically at predetermined intervals, even if there is no user operation.

[0047] If a flushing command is acquired (YES in S12), the process proceeds to S14. In S14, the control unit 100 drives the pump 42 at the first rotation speed. Specifically, the control unit 100 supplies a current corresponding to the first rotation speed to the pump 42. In S16, the control unit 100 switches the switching valve device 46 so that the right rim flow path is connected. Specifically, the control unit 100 connects the communication pipe 44, which connects the pump 42 to the water discharge nozzle 52, with the branch pipe 48c by supplying power to the solenoid valve of the switching valve 74 of the switching valve device 46. The flow path in which the communication pipe 44 and the branch pipe 48c communicate via the switching valve device 46 is the right rim flow path. As a result, flush water discharged from the pump 42 passes through the right rim flow path and is discharged from the water discharge nozzle 52.

[0048] When wash water is discharged from the water discharge nozzle 52 for a predetermined period (for example, 2 seconds) in S16, the control unit 100 drives the pump 42 at the second rotation speed in S17. Specifically, the control unit 100 supplies a current corresponding to the second rotation speed to the pump 42. In S18, the control unit 100 switches the switching valve device 46 so that the spreader flow path is connected. Specifically, the control unit 100 supplies power to the solenoid valve of the switching valve 78 of the switching valve device 46, thereby connecting the communication pipe 44, which connects the pump 42 to the spreader 60, and the branch pipe 48b. The flow path in which the communication pipe 44 and the branch pipe 48b communicate via the switching valve device 46 is the spreader flow path. As a result, wash water discharged from the pump 42 passes through the spreader flow path and is discharged from the spreader 60.

[0049] When flush water has been discharged from the spreader for a predetermined period (e.g., 2 seconds) in S18, the control unit 100 drives the pump 42 at the third rotation speed in S19. Specifically, the control unit 100 supplies a current corresponding to the third rotation speed to the pump 42. In S20, the switching valve device 46 is switched so that the left rim flow path is connected. Specifically, the control unit 100 supplies power to the solenoid valve of the switching valve 76 of the switching valve device 46, thereby connecting the communication pipe 44, which connects from the pump 42 to the water discharge nozzle 50, with the branch pipe 48a. The flow path in which the communication pipe 44 and the branch pipe 48a communicate via the switching valve device 46 is the left rim flow path. As a result, flush water delivered from the pump 42 passes through the left rim flow path and is discharged from the water discharge nozzle 50.

[0050] When wash water is discharged from the water discharge nozzle 50 for a predetermined period (e.g., 2 seconds) in S20, the control unit 100 supplies a current corresponding to the fourth rotation speed to the pump 42 in S21. As a result, the pump 42 is driven at the fourth rotation speed.

[0051] In S22, the control unit 100 switches the switching valve device 46 so that the jet flow path is connected. Specifically, the control unit 100 connects the communication pipe 44, which connects the pump 42 to the water discharge opening 54, with the branch pipe 48d by supplying power with the solenoid valve 91 of the switching valve 72 of the switching valve device 46. The flow path in which the communication pipe 44 and the branch pipe 48d communicate with each other via the switching valve device 46 is the jet flow path. As a result, the wash water discharged from the pump 42 passes through the jet flow path and is discharged from the water discharge opening 54. When the wash water is discharged from the jet flow path for a predetermined period (for example, one second) in S22, the control unit 100 supplies a current corresponding to the fifth rotation speed to the pump 42 in S23. As a result, the pump 42 is driven at the fifth rotation speed.

[0052] When water is discharged from the jet flow path, the waste that has been flushed below the toilet bowl by the flushing process can be flushed into the drain pipe 36 by the flush water. The control unit 100 changes the rotation speed of the pump 42 from the third rotation speed to the fourth rotation speed in S21, and then switches the switching valve device 46 to the jet flow path in S22. This makes it possible to increase the amount of water discharged from the water discharge opening 54 immediately after switching, compared to a configuration in which the rotation speed is changed after switching to the jet flow path. The waste can be flushed into the drain pipe 36 early. In a modified example, a signal for changing the rotation speed of the pump 42 from the third rotation speed to the fourth rotation speed, i.e., a signal for changing the current value, may be supplied to a circuit for supplying current to the pump 42 in S21, and then a signal for switching to the jet flow path may be supplied to the switching valve device 46 in S22. In this case, the switching to the jet flow path may be performed in the switching valve device 46 before the rotation speed of the pump 42 is actually changed. With this configuration, waste can be flushed into the drain pipe 36 sooner after the flow path is switched, compared to a configuration in which a signal to switch to the jet flow path is supplied first, and then a signal to change the rotation speed of the pump 42 is supplied.

[0053] When wash water is discharged from the jet flow path for a predetermined period (e.g., 1 second) in S23, the control unit 100 supplies a current corresponding to the sixth rotation speed to the pump 42 in S24. As a result, the pump 42 is driven at the sixth rotation speed. In S23, wash water is discharged from the jet flow path for a predetermined period (e.g., 1 second), thereby executing a condensing operation in which the wash water is stored in the water storage section 24. The fifth rotation speed is set to be smaller than the fourth rotation speed, thereby reducing the water pressure of the wash water discharged from the jet flow path. The fifth rotation speed is set so that the wash water in the water storage section 24 does not exceed the curved position 36a of the drain pipe 36 due to the wash water discharged from the jet flow path.

[0054] At S26, the control unit 100 switches the valve device 46 so that the right rim flow path is connected, just as in S16. At S30, the control unit 100 judges whether flush water has been discharged from the right rim flow path for a first preset period of time. Specifically, it judges whether the first period has elapsed since switching to the right rim flow path in S26. If the first period has elapsed since switching to the right rim flow path, the control unit 100 judges that flush water has been discharged from the right rim flow path for the first period of time and proceeds to S52.

[0055] If a cleaning command is not acquired in S12 (NO in S12), the process proceeds to S15. In S15, the control unit 100 judges whether or not the cleaning mode should be executed. Specifically, if the user performs an operation to execute the cleaning mode, such as operating a cleaning mode button on an operating device, the control unit 100 judges that the cleaning mode should be executed (YES in S15) and proceeds to S34. If the user does not perform an operation to execute the cleaning mode, such as operating a cleaning mode button on an operating device, the control unit 100 judges that the cleaning mode should not be executed (NO in S15) and returns to S12.

[0056] If the answer is YES in S16, the processes of S34 to S46 are executed. The processes of S34 to S46 are the same as the processes of S14 to S26. That is, wash water is discharged in the order of the water discharge nozzle 52, the spreader 60, the water discharge nozzle 50, the water discharge opening 54, and the water discharge nozzle 50.

[0057] At S50, the control unit 100 determines whether flush water has been discharged from the right rim flow path for a preset second period of time. Specifically, it determines whether the second period has elapsed since switching to the right rim flow path at S46. If the second period has elapsed since switching to the right rim flow path, the control unit 100 determines that flush water has been discharged from the right rim flow path for the second period of time and proceeds to S52. The second period of time is shorter than the first period of time.

[0058] In S52, the control unit 100 stops the pump 42. In S54, the control unit 100 closes the switching valve device 46 to end the cleaning process.

[0059] When the cleaning mode should be executed (YES in S15), the second period during which water is discharged from the jet flow path is shorter than the first period when the flushing process is executed (YES in S12). This allows the amount of pooled water to be reduced when the cleaning mode is executed. When the cleaning mode is executed, the pooled water level WS after the flushing process can be kept low. By lowering the pooled water level, it becomes easier for the user to clean the toilet bowl 22 using a cleaning brush or the like. After cleaning, the user can raise the pooled water level WS by executing the flushing process.

[0060] The toilet apparatus 10 is equipped with water discharge nozzles 50, 52 that discharge flushing water from the upper end of the toilet bowl 22 into the toilet bowl 22, and a spreader 60. This allows flushing water to flow over a wide area over the surface of the toilet bowl 22. In a situation where excrement and the like has been scattered over a wide area over the surface of the toilet bowl 22, the scattered excrement and the like can be washed away from the surface of the toilet bowl 22.

[0061] The rotational speed of the pump 42 is in the order of the fourth rotational speed, the first rotational speed, the second rotational speed, the third rotational speed, the sixth rotational speed, and the fifth rotational speed. That is, the rotational speed is the highest when the waste material, etc. from the jet flow path is discharged into the drain pipe 36. This allows the waste material, etc. to be discharged appropriately. The first rotational speed, the second rotational speed, and the third rotational speed, that is, the rotational speeds for the right rim flow path, the spreader flow path, and the left rim flow path, are determined by the length and shape of the flow paths from the pump 42. The manner in which the water is discharged from the right rim flow path and the manner in which the water is discharged from the left rim flow path may be symmetrical. The switching of the switching valve device 46 may be performed after the switching of the rotational speed of the pump 42, as in the cleaning process of FIG. 11, or may be performed before the switching of the rotational speed of the pump 42.

[0062] The switching valve device 46 is provided with switching valves 72, 74, 76, and 78 for each flow path, so that the first rim flow path, the second rim flow path, the spreader flow path, and the jet flow path can be independently switched between open and closed.

[0063] (Reservoir configuration) As shown in Fig. 12, the reservoir 18 is made by assembling a lower member 18a and an upper member 18b together. A flange 18c is disposed on the upper edge of the lower member 18a, the flange 18c extending around the upper edge. A flange 18d is disposed on the lower edge of the upper member 18b, the flange 18d extending around the lower edge. As shown in Fig. 13, the lower member 18a and the upper member 18b are fixed to each other by bringing the flanges 18c and 18d into contact with each other and sandwiching the flanges 18c and 18d from above and below with a fastener 18e. The reservoir 18 may be attached to the toilet apparatus 10 while being housed in a housing that covers the reservoir 18.

[0064] A water intake nozzle 18f that is connected to the pump 42 is attached to the upper member 18b. The water intake nozzle 18f is molded separately from the upper member 18b. The water intake nozzle 18f has a cylindrical shape. An enlarged diameter portion 18g is disposed at the lower end of the water intake nozzle 18f. The enlarged diameter portion 18g enlarges the space that is connected to the inside of the cylindrical shape of the water intake nozzle 18f. The enlarged diameter portion 18g makes the opening of the lower end of the water intake nozzle 18f wider than the opening of the upper end. The lower end of the water intake nozzle 18f extends to near the bottom surface of the lower member 18a. This allows the water intake nozzle 18f to take in the flush water stored in the reservoir 18 up to near the bottom surface. The water intake nozzle 18f is enlarged in diameter at the lower end by the enlarged diameter portion 18g, making it easy to take in flush water.

[0065] A part of the expanded diameter portion 18g of the water intake nozzle 18f protrudes downward. The lower member 18a has a step portion 18h along the protruding portion of the expanded diameter portion 18g. A convex portion is formed at the upper end of the water intake nozzle 18f. The upper member 18b has a concave portion corresponding to the convex portion of the water intake nozzle 18f at the position where the water intake nozzle 18f is attached. The water intake nozzle 18f and the upper member 18b are fitted into the convex portion of the water intake nozzle 18f and the concave portion of the upper member 18b by inserting the water intake nozzle 18f into the upper member 18b and rotating it. In this way, the water intake nozzle 18f is attached to the upper member 18b.

[0066] If the water intake nozzle 18f is not properly attached to the upper member 18b, the opening of the water intake nozzle 18f is blocked, and water cannot be properly taken from the reservoir 18. If the water intake nozzle 18f is not properly attached to the upper member 18b, the water intake nozzle 18f is not properly rotated relative to the upper member 18b. In this case, the lower protruding portion of the enlarged diameter portion 18g comes into contact with the step portion 18h of the lower member 18a, and the flange 18d of the upper member 18b and the flange 18c of the lower member 18a cannot come into contact with each other. As a result, it is possible to detect that the water intake nozzle 18f is not properly attached to the upper member 18b.

[0067] (Correspondence) The water discharge nozzle 50 is an example of a "first water discharge port." The water discharge nozzle 52 is an example of a "second water discharge port." The water discharge opening 54 is an example of a "third water discharge port." The check valve 45 is an example of a "check valve device," a "first check valve device," a "second check valve device," and a "third check valve device." The switching valve 74 is an example of a "first switching valve device." The switching valve 78 is an example of a "second switching valve device." The switching valve 72 is an example of a "third switching valve device."

[0068] Aspects of the technology disclosed in this specification are listed below.

[0069] The first aspect is a toilet device. The toilet device may include a toilet bowl having a water storage section below, a water discharge flow path including a first water discharge port and a second water discharge port that discharge flushing water flowing from an upper end of the toilet bowl into the toilet bowl, and a third water discharge port at least a portion of which is submerged in the water storage section, and a pump that pressurizes the flushing water and sends the flushing water from the water discharge flow path including the first water discharge port, the second water discharge port, and the third water discharge port into the toilet bowl.

[0070] In a second aspect, in the first aspect, the toilet device may further include a check valve device arranged in the water discharge flow path between the pump and the third water discharge outlet, allowing the passage of the flushing water from the pump toward the third water discharge outlet and restricting the passage of the flushing water from the third water discharge outlet toward the pump.

[0071] A third aspect is any one of the first and second aspects above, wherein the toilet apparatus further includes a switching valve device arranged in the front water discharge flow path between the pump and the first water outlet, between the pump and the second water outlet, and between the pump and the third water outlet, and the switching valve device may switch between a first communication state that connects the pump and the first water outlet and a first blocking state that blocks the pump and the first water outlet, switch between a second communication state that connects the pump and the second water outlet and a second blocking state that blocks the pump and the second water outlet, and switch between a third communication state that connects the pump and the third water outlet and a third blocking state that blocks the pump and the third water outlet.

[0072] A fourth aspect is any one of the first to third aspects, further comprising at least one of a first valve combination including a first check valve device arranged between the pump and the first water outlet in the water discharge flow path and a first switching valve device arranged between the first check valve device and the first water outlet, a second valve combination including a second check valve device arranged between the pump and the second water outlet in the water discharge flow path and a second switching valve device arranged between the second check valve device and the second water outlet, and a third valve combination including a third check valve device arranged between the pump and the third water outlet in the water discharge flow path and a third switching valve device arranged between the third check valve device and the third water outlet, wherein in the first valve combination, the first check valve device allows the passage of the flush water from the pump toward the first water outlet and restricts the passage of the flush water from the first water outlet toward the pump. and in the second valve combination, the second check valve device allows the passage of the flushing water from the pump toward the second outlet and restricts the passage of the flushing water from the second outlet toward the pump, and the second switching valve device switches between a second communication state that communicates the pump and the second outlet and a second blocking state that blocks the pump and the second outlet. and in the third valve combination, the third check valve device allows the passage of the flushing water from the pump toward the third outlet and restricts the passage of the flushing water from the third outlet toward the pump, and the third switching valve device switches between the second communication state that communicates the pump and the third outlet and a third blocking state that blocks the pump and the third outlet.

[0073] In a fifth aspect, in the third aspect, the switching valve device may further include a pilot valve device including a diaphragm valve arranged in the discharge flow path and an solenoid valve that controls the pressure on the back pressure side of the diaphragm valve.

[0074] In a sixth aspect, in any one of the third and fifth aspects above, the toilet apparatus further includes a control unit that controls the pump and the switching valve device, and when the cleaning water is to be discharged from the third water outlet, the control unit may supply a signal to operate the pump, and then supply a signal to the switching valve device to switch the switching valve device from the third blocked state to the third connected state.

[0075] In a seventh aspect, in any one of the third, fifth and sixth aspects, the toilet apparatus further includes a control unit that controls the pump and the switching valve device, and the control unit may adjust the amount of flush water supplied to the toilet bowl from the water discharge flow path by controlling the pump and the switching valve device so that the water level height of the water pooling at the bottom of the toilet bowl is either a first height or a second height lower than the first height.

[0076] An eighth aspect is any one of the first to seventh aspects, wherein the water discharge flow path has a plurality of water outlets including the first water outlet, the second water outlet, and the third water outlet, the pump supplies the flushing water to the toilet bowl from the plurality of water outlets, and the toilet device may further switch, for each of the plurality of water outlets, between a connected state in the water discharge flow path that connects the pump to the water outlet, and a blocked state that blocks the pump from the water outlet.

[0077] Specific examples of the technology disclosed in this specification have been described above in detail. These are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes to the specific examples exemplified above. Modifications of the above embodiment are listed below.

[0078] (1) The toilet apparatus 10 may be provided with a plurality of switching valve devices arranged in the first rim flow path, the second rim flow path, the spreader flow path, and the jet flow path, respectively, instead of the switching valve device 46. In this case, each switching valve device may be provided with a pilot valve device similar to the switching valve 72.

[0079] (2) The toilet device 10 may have at least two water outlets, among the water outlet nozzles 50, 52 and the spreader 60. In this case, the spreader 60 may be an example of either the "first water outlet" or the "second water outlet". The toilet device 10 may have a water outlet that discharges flushing water to the upper end of the toilet bowl 22 in addition to the water outlet nozzles 50, 52 and the spreader 60. For example, four or more water outlets that discharge flushing water to the upper end of the toilet bowl 22 may be arranged. Also, for example, the toilet device 10 may have at least one of a discharge outlet and a discharge nozzle that discharge flushing water from the functional part 16 to the upper part of the toilet bowl 22. In this case, the discharge outlet arranged in the functional part 16 and the discharge outlet arranged in the discharge nozzle extending from the functional part 16 may be an example of either the "first water outlet" or the "second water outlet".

[0080] (3) The position of the water discharge opening 54 does not have to face the drain outlet 34. For example, the water discharge opening 54 may open into the toilet bowl 22 on one of the left and right sides of the water collecting section 24. A portion of the water discharge opening 54 may be located above the water surface WS.

[0081] The technical elements described in the specification and / or drawings exhibit technical utility alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. The technologies illustrated in the specification and / or drawings can achieve multiple objectives simultaneously, and achieving one of these objectives is itself technically useful. [Explanation of symbols]

[0082] 10: toilet device, 18: reservoir, 18a: lower member, 18b: upper member, 18c, 18d: flange, 18f: water intake nozzle, 18g: enlarged diameter portion, 20: toilet body, 22: toilet bowl, 24: water storage portion, 30: upper end rim portion, 40: water discharge portion, 42: pump, 45: check valve, 46: switching valve device, 48a, 48b, 48c, 48d: branch pipe, 50, 52: water discharge nozzle, 54: water discharge opening, 60: spreader, 7 0: inlet pipe, 70a: inlet flow passage, 70b: branch passage, 71: housing, 72, 74, 76, 78: switching valve, 72S: back pressure chamber, 72a: primary side flow passage, 72b: secondary side flow passage, 72d: diaphragm valve, 72e: spring, 72f: wall surface, 72h, 72j, 72k: connecting flow passage, 80, 82, 84, 86: outlet pipe, 80a: discharge flow passage, 91: solenoid valve, 92: valve body, 94: solenoid unit, 100: control unit

Claims

1. A toilet bowl having a water collecting portion below; a water discharge flow path including a first water discharge port and a second water discharge port that discharge flush water flowing from an upper end portion of the toilet bowl into the toilet bowl, and a third water discharge port at least a portion of which is immersed in the water pool; a pump that pressurizes the flush water and sends the flush water out from the water discharge flow path, which includes the first water discharge outlet, the second water discharge outlet, and the third water discharge outlet, to the toilet bowl.

2. The toilet apparatus of claim 1, further comprising a check valve device disposed in the water discharge flow path between the pump and the third water discharge outlet, which allows the passage of the flushing water from the pump toward the third water discharge outlet and restricts the passage of the flushing water from the third water discharge outlet toward the pump.

3. Further comprising a switching valve device arranged in the front water discharge flow path between the pump and the first water discharge port, between the pump and the second water discharge port, and between the pump and the third water discharge port, The switching valve device is switching between a first communication state in which the pump and the first water outlet are communicated and a first blocking state in which the pump and the first water outlet are blocked; switching between a second communication state in which the pump and the second water outlet are communicated and a second blocking state in which the pump and the second water outlet are blocked; The toilet device according to claim 1 or 2, which switches between a third communication state in which the pump and the third water outlet are connected, and a third blocking state in which the pump and the third water outlet are blocked.

4. The water discharge passage further includes at least one of a first valve combination including a first check valve device arranged between the pump and the first water outlet in the water discharge flow passage and a first switching valve device arranged between the first check valve device and the first water outlet, a second valve combination including a second check valve device arranged between the pump and the second water outlet in the water discharge flow passage and a second switching valve device arranged between the second check valve device and the second water outlet, and a third valve combination including a third check valve device arranged between the pump and the third water outlet in the water discharge flow passage and a third switching valve device arranged between the third check valve device and the third water outlet, In the first valve combination, the first check valve device permits passage of the flush water from the pump toward the first water outlet and restricts passage of the flush water from the first water outlet toward the pump; The first switching valve device switches between a first communication state in which the pump and the first water outlet are communicated with each other and a first blocking state in which the pump and the first water outlet are blocked, In the second valve combination, the second check valve device permits passage of the flush water from the pump toward the second outlet and restricts passage of the flush water from the second outlet toward the pump; The second switching valve device switches between a second communication state in which the pump and the second water outlet are communicated with each other and a second blocking state in which the pump and the second water outlet are blocked, In the third valve combination, the third check valve device permits passage of the flush water from the pump toward the third water outlet and restricts passage of the flush water from the third water outlet toward the pump; The toilet apparatus according to claim 1, wherein the third switching valve device switches between a second communication state in which the pump and the third water outlet are connected to each other, and a third blocking state in which the pump and the third water outlet are blocked from each other.

5. 4. The toilet apparatus according to claim 3, wherein the switching valve device comprises a pilot valve device including a diaphragm valve disposed in the water discharge flow path, and a solenoid valve that controls pressure on a back pressure side of the diaphragm valve.

6. A control unit for controlling the pump and the switching valve device is further provided. The toilet device described in claim 3, wherein the control unit, when discharging the flushing water from the third water outlet, supplies a signal to operate the pump, and then supplies a signal to the switching valve device to switch the switching valve device from the third blocked state to the third connected state.

7. A control unit for controlling the pump and the switching valve device is further provided. The toilet device described in claim 3, wherein the control unit adjusts the amount of flush water supplied to the toilet bowl from the water discharge flow path so that the water level height of the water accumulating at the bottom of the toilet bowl is either a first height or a second height lower than the first height, by controlling the pump and the switching valve device.

8. The water discharge flow path includes a plurality of water discharge ports including the first water discharge port, the second water discharge port, and the third water discharge port, The pump supplies the flush water to the toilet bowl from the plurality of water outlets, The toilet device according to any one of claims 1 and 2, further comprising a plurality of switching valves for each of the plurality of water outlets, which switch between a communication state in which the pump and the water outlet are connected in the water outlet flow path and a blocked state in which the pump and the water outlet are blocked.

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