JP6631774B2 - Flush toilet equipment - Google Patents

Description

  The present invention relates to a flush toilet device, and more particularly, to a non-restorative flush toilet device.

  Patent Literature 1 proposes a non-stationary flush toilet device (pressure-feeding toilet device) that is disposed on the bedside of a user's living room and is used as a nursing care toilet. In the flush toilet apparatus, the waste is pulverized by stirring the water flow in the pulverizing unit, and the pulverized waste is pumped by the pressure feeding unit and drained to the outside.

  In this conventional flush toilet apparatus, even if foreign substances (non-crushable foreign substances) other than waste and toilet paper are mistakenly flushed, the foreign substances stay in the water storage tank, and the driving means such as the electric motor locks. The user is able to continue using the toilet device because it is not disabled. In a flush toilet device used as a nursing toilet disposed at a bedside in a living room, this countermeasure against foreign substances is a very important issue that affects the establishment of a product business.

In addition, the nursing care toilets located on the bedside discharge relatively finely ground dirt to the outside (outdoor drainage pipes) through thin and long drainage hoses. It is preferable to employ a centrifugal pump capable of realizing the process. However, in this centrifugal pump, it is necessary to narrow the flow path in order to generate a high pressure, and therefore, there is a problem that the flow path is clogged when large dirt flows in.
For this reason, in the toilet device of Patent Literature 1, only the fine matter pulverized to a predetermined size or less in the pulverizing unit flows into the pressure feeding unit, thereby preventing the flow path of the pressure feeding unit from being clogged.

Patent No. 5495191

  As described above, in the flush toilet device, foreign substances other than filth and toilet paper may be mistakenly washed away.In particular, foreign substances such as `` box tissue '' and `` washable buttocks wipes '' are discharged to the crushing section. Foreign matter that can only be crushed to a fibrous state (a foreign matter that can be crushed only halfway). Recently, such foreign matter has been used. The fibrous foreign matter flows into the pumping unit and is easily caught in the narrow flow path of the pumping unit.Furthermore, the caught fibrous foreign matter grows in large numbers by entanglement of new fibrous foreign substances one after another, and eventually. There is a new problem of blocking a narrow flow path in the pumping section.

  Accordingly, the present invention has been made to solve the above-described problem, and uses a centrifugal pumping unit (centrifugal pump or the like) capable of realizing a high head, and pulverizes only to a fibrous state in a pulverizing unit. It is an object of the present invention to provide a flush toilet device that can prevent the fibrous foreign matter from flowing into the pumping section and blocking the flow path even when an impossible foreign matter is washed away.

In order to achieve the above-mentioned object, the present invention relates to a non-stationary flush toilet device, which includes a toilet body, a water supply means for supplying flush water to the toilet body, and a flush water discharged from the toilet body. excrement and grinding zone for grinding and a pumping unit for pumping sewage and flush water which has been pulverized by the grinding zone, the drainage of the flexible for discharging the waste and washing water pumped by the pumping unit to the outside A pipe, provided between the crushing unit and the pumping unit, has a passage regulating unit that passes only the filth crushed to a size equal to or less than a predetermined size in the crushing unit and sends the filth to the pumping unit, and the pumping unit includes: An inflow port formed in a central portion below the pumping section, an outflow port formed in an outer peripheral portion of the pumping section, one or more impellers rotating in the pumping section, and the impeller were attached to a lower surface thereof. a mounting plate, one extending toward the outer periphery communicating with the inlet port also A plurality of radial flow paths, a circumferential flow path extending in the circumferential direction of the outer periphery of the impeller and communicating with the outlet, a centrifugal-type pressure-feeding unit, if there are multiple radial flow paths, In the radial channel, a branch portion with another adjacent radial channel on the upstream side of the radial channel is formed at an angle of 90 ° or more, and the impeller has an inner wall surface, an outer peripheral wall surface, A connecting wall connecting the lower end of the wall surface and the lower end of the outer peripheral side wall surface is provided, and the width of the radial path is formed wider than the opening width of the inflow port .
In the present invention configured as described above, since the centrifugal pressure feeding section is provided, it is possible to discharge filth with a high head using a thin and long flexible drainage pipe. In addition, since there is provided a passage restricting section between the pulverizing section and the pumping section, which passes only the pulverized waste to a predetermined size or less in the pulverizing section and sends the pulverized waste to the pumping section, the unpulverized large waste in the pumping section is It is possible to prevent inflow and clogging of the pressure feeding section. Furthermore, when foreign substances such as "box tissue" or "flowable towel wipes" are flowed into the toilet body, they are pulverized in the pulverizing section to become fibrous and flow into the pumping section, and the fibrous foreign substances are caught and entangled in the pumping section. And grows large, causing the problem of clogging the pumping section. However, according to the present invention, one or more radial flow paths are provided in the centrifugal pumping section, and when there are a plurality of radial flow paths, the upstream side of the radial flow path in all the radial flow paths Is formed at an angle of 90 ° or more with the other adjacent radial flow path, in other words, in the case of one radial flow path, the branch part is located upstream of the radial flow path. In the case of a plurality of radial flow paths, there is no acute angle (less than 90 degrees) branch portion upstream of the radial flow path. It can be discharged without catching the foreign matter in a shape. As a result, according to the present invention, it is possible to prevent the fibrous foreign matter from growing large in the pumping section and clogging the pumping section. Further, according to the present invention, since the width of the radial path is formed wider than the opening width of the inflow port, the fibrous foreign matter that has flowed into the radial flow path from the inflow port is removed by the centrifugal force. Can be dispersed and flown to the side of the container.
The present invention also relates to a non-stationary flush toilet device, which includes a toilet body, water supply means for supplying flush water to the toilet body, and a crushing unit for crushing filth discharged together with flush water from the toilet body. A pressurizing unit for pumping the waste and the washing water pulverized by the pulverizing unit, a flexible drain pipe for discharging the contaminant and the washing water pumped by the pulverizing unit to the outside, provided between the parts, anda passage regulating section for sending the pumping unit and passes only waste which is crushed into a predetermined size smaller than the in the pulverizing unit, pumping unit, central below the pumping unit The inlet formed in the part, the outlet formed in the outer peripheral part of the pumping unit, one or more impellers rotating in the pumping unit, a mounting plate on which the impeller is mounted on the lower surface, and the inlet One or more radial channels extending toward the communication outer periphery; A peripheral flow path extending circumferentially around the outer periphery of the propeller and communicating with the outlet, and a centrifugal-type pressure-feeding unit having a plurality of radial flow paths. A branch portion with another radial flow path adjacent on the upstream side of the flow path is formed at an angle of 90 degrees or more, and the impeller has an inner wall surface, an outer peripheral wall surface, and a lower end of the inner wall surface and an outer peripheral wall surface. A connection wall connecting the lower end; and a chamfer is formed between the inner wall surface of the impeller and the connection wall .
In the present invention configured as described above, since the centrifugal pressure feeding section is provided, it is possible to discharge waste at a high head using a thin and long flexible drain pipe. In addition, since there is provided a passage restricting section between the pulverizing section and the pumping section, which passes only the pulverized waste to a predetermined size or less in the pulverizing section and sends the pulverized waste to the pumping section, the unpulverized large waste in the pumping section is It is possible to prevent inflow and clogging of the pressure feeding section. Furthermore, when foreign substances such as "box tissue" or "flowable towel wipes" are flowed into the toilet body, they are pulverized in the pulverizing section to become fibrous and flow into the pumping section, and the fibrous foreign substances are caught and entangled in the pumping section. And grows large, causing the problem of clogging the pumping section. However, according to the present invention, one or more radial flow paths are provided in the centrifugal pumping section, and when there are a plurality of radial flow paths, the upstream side of the radial flow path in all the radial flow paths Is formed at an angle of 90 ° or more with the other adjacent radial flow path, in other words, in the case of one radial flow path, the branch part is located upstream of the radial flow path. In the case of a plurality of radial flow paths, there is no acute angle (less than 90 degrees) branch portion upstream of the radial flow path. It can be discharged without catching the foreign matter in a shape. As a result, according to the present invention, it is possible to prevent the fibrous foreign matter from growing large in the pumping section and clogging the pumping section. Furthermore, according to the present invention, the impeller includes an inner wall surface, an outer peripheral wall surface, and a connecting wall that connects a lower end of the inner wall surface and a lower end of the outer peripheral wall surface. Since the chamfer is formed between the fibers, the fibrous foreign matter that has flowed into the radial flow path from the inflow port is dispersed along the chamfer by the centrifugal force and the own weight to the side of the radial flow path, and the foreign matter is released while loosening the foreign matter. Can flow through the directional channel.
Further, the present invention relates to a non-stationary flush toilet device, comprising a toilet body, a water supply means for supplying flush water to the toilet body, and a crushing section for crushing filth discharged together with flush water from the toilet body. A pressurizing unit for pumping the waste and the washing water pulverized by the pulverizing unit, a flexible drain pipe for discharging the contaminant and the washing water pumped by the pulverizing unit to the outside, provided between the parts, anda passage regulating section for sending the pumping unit and passes only waste which is crushed into a predetermined size smaller than the in the pulverizing unit, pumping unit, central below the pumping unit The inlet formed in the part, the outlet formed in the outer peripheral part of the pumping unit, one or more impellers rotating in the pumping unit, a mounting plate on which the impeller is mounted on the lower surface, and the inlet One or more radial channels extending toward the communicating outer periphery; A circumferential flow path extending circumferentially around the outer periphery of the impeller and communicating with the outlet, and a centrifugal-type pressure-feeding unit provided with a plurality of radial flow paths. A branch portion with another radial flow path adjacent on the upstream side of the flow path is formed at an angle of 90 degrees or more, and the impeller has an inner wall surface, an outer peripheral wall surface, and a lower end of the inner wall surface and an outer peripheral wall surface. A connection wall connecting the lower end; and a space between the upper end of the inner wall surface of the impeller and the upper end of the outer peripheral side wall is closed by the lower surface of the mounting board .
In the present invention configured as described above, since the centrifugal pressure feeding section is provided, it is possible to discharge filth with a high head using a thin and long flexible drainage pipe. In addition, since there is provided a passage restricting section between the pulverizing section and the pumping section, which passes only the pulverized waste to a predetermined size or less in the pulverizing section and sends the pulverized waste to the pumping section, the unpulverized large waste in the pumping section is It is possible to prevent inflow and clogging of the pressure feeding section. Furthermore, when foreign substances such as "box tissue" or "flowable towel wipes" are flowed into the toilet body, they are pulverized in the pulverizing section to become fibrous and flow into the pumping section, and the fibrous foreign substances are caught and entangled in the pumping section. And grows large, causing the problem of clogging the pumping section. However, according to the present invention, one or more radial flow paths are provided in the centrifugal pumping unit, and when there are a plurality of radial flow paths, the upstream side of the radial flow path in all the radial flow paths Is formed at an angle of 90 degrees or more with the other adjacent radial flow path. In other words, in the case of one radial flow path, the branch part is located upstream of the radial flow path. In the case of a plurality of radial flow paths, there is no acute angle (less than 90 degrees) branch portion upstream of the radial flow path. It can be discharged without catching the foreign matter in a shape. As a result, according to the present invention, it is possible to prevent the fibrous foreign matter from growing large in the pumping section and clogging the pumping section. Furthermore, according to the present invention, the impeller includes an inner wall surface, an outer peripheral wall surface, and a connecting wall that connects a lower end of the inner wall surface and a lower end of the outer peripheral wall surface. Since the space between the upper end of the wall and the upper surface of the wall is closed by the lower surface of the mounting plate, water does not enter the inner space of the impeller, so that it is possible to suppress the fibrous foreign matter from growing entangled in the inner space of the impeller. .

In the present invention, preferably, the pumping portion is a vortex generation preventing wall formed by an inner wall surface, an outer peripheral wall surface, and a connection wall of the impeller, and a radial flow path of the outer peripheral portion of the impeller exists. And a vortex generation preventing wall for preventing generation of a vortex formed in an area where no vortex is generated.
When there are a plurality of radial flow paths of the pumping unit, in all the radial flow paths, a branch portion with another adjacent radial flow path on the upstream side of the radial flow path is formed at an angle of 90 degrees or more. Then, a negative pressure portion is generated in a region where the radial flow path does not exist on the outer peripheral portion of the impeller, and the dirt and washing water pushed out to the circumferential flow path by centrifugal force flow into the negative pressure portion, and this negative pressure is generated. Since the vortex stays in the pressure part as a vortex for a long time, the fibrous foreign substances become entangled with each other and grow large, thereby blocking the pressure feeding part. However, even in such a case, according to the present invention, since the eddy current generation preventing wall is provided in a region where the radial flow path does not exist on the outer peripheral portion of the impeller, fibrous foreign matter generated due to the generation of the eddy current is generated. Can be prevented from entanglement and large growth, thereby preventing clogging of the flow path of the pumping section, and furthermore, deterioration of pumping performance due to generation of eddy current can be prevented.

In the present invention, preferably, the eddy current generation preventing wall of the pumping section is provided in substantially the entire region of the outer peripheral portion of the impeller where the radial flow path does not exist.
According to the present invention configured as described above, since the eddy current generation preventing wall is provided in substantially the entire area of the outer peripheral portion of the impeller where the radial flow path does not exist, eddy current may be generated. The region is almost eliminated, and the generation of the vortex can be more reliably prevented. Accordingly, it is possible to prevent the fibrous foreign substances from becoming entangled with each other and growing large, to prevent the flow path from being clogged in the pumping unit, and to prevent the pumping performance from deteriorating due to the generation of the vortex.

In the present invention, preferably, the radial flow path of the pumping section is formed so that the flow path width gradually increases at the radially outer end.
In the present invention configured as described above, since the radial flow path of the pumping section is formed so that the flow path width is gradually increased at the end in the radial direction, the radial flow path is Since it is possible to prevent the fibrous foreign matter from being caught at the end in the direction, it is possible to prevent the fibrous foreign matter from becoming entangled one after another with the caught fibrous foreign matter and growing large. Thereby, it is possible to prevent the flow path from being clogged in the pressure feeding unit.

  According to the flush toilet device of the present invention, a centrifugal pumping unit (centrifugal pump or the like) capable of realizing a high head is used, and when a foreign matter that can only be pulverized to a fibrous state is flown in the pulverizing unit. Even if there is, it is possible to prevent the fibrous foreign matter from blocking the flow path of the pumping section.

1 is an overall perspective view showing a flush toilet device according to a first embodiment of the present invention. 1 is an overall configuration diagram illustrating a flush toilet device according to a first embodiment of the present invention. It is sectional drawing which shows the pulverizing-pumping apparatus of the flush toilet apparatus by 1st Embodiment of this invention. FIG. 4 is an enlarged cross-sectional view illustrating a pumping unit of the pulverizing pumping device of FIG. 3. FIG. 5 is an external view of a pumping chamber of a pumping unit of the pulverizing pumping device of FIG. 4 as viewed obliquely from below with a lower cover removed. FIG. 5 is an external view of the pumping chamber of the pumping unit of the pulverizing pumping device of FIG. 4 as viewed from directly below with a lower cover removed. FIG. 6 is an external view of only the impeller of the pumping unit of FIG. 5 taken out and viewed obliquely from below. FIG. 6 is an external view of the pumping unit shown in FIG. It is the perspective view which shows the pump room and the impeller which looked at the crushing and feeding apparatus of the conventional flush toilet apparatus from diagonally downward. It is a figure for explaining a subject in a conventional crushing and feeding device of a flush toilet device. It is a bottom view which shows the pump room and impeller which show the development process leading to this invention. It is sectional drawing which shows operation | movement in the pulverizing-pumping part of the flush toilet apparatus by 1st Embodiment of this invention. It is sectional drawing which shows operation | movement in the pulverizing-pumping part of the flush toilet apparatus by 1st Embodiment of this invention. It is sectional drawing which shows operation | movement in the pulverizing-pumping part of the flush toilet apparatus by 1st Embodiment of this invention. It is the external view which looked at the pumping chamber of the pumping part of the crushing pumping device of the flush toilet according to 2nd Embodiment of this invention from the state directly below with the lower cover removed. It is a bottom view which shows the impeller of the pulverization pumping part of the flush toilet apparatus by 2nd Embodiment of this invention. It is the external view which looked at the pumping chamber of the pumping part of the crushing-pumping apparatus of the flush toilet according to 3rd Embodiment of this invention from the lower part with the lower cover removed. It is a bottom view which shows the impeller of the crushing-pumping part of the flush toilet apparatus by 3rd Embodiment of this invention. It is the external view which looked at the pumping chamber of the pumping part of the crushing pumping apparatus of the flush toilet according to 4th Embodiment of this invention from the lower part with the lower cover removed. It is a bottom view which shows the impeller of the crushing pressure feeding part of the flush toilet apparatus by 4th Embodiment of this invention.

  Next, a flush toilet device according to an embodiment of the present invention will be described with reference to the accompanying drawings. First, the overall structure of a flush toilet device according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an overall perspective view showing a flush toilet device according to a first embodiment of the present invention, and FIG. 2 is an overall configuration diagram showing a flush toilet device according to a first embodiment of the present invention.

  As shown in FIG. 1, a flush toilet device 1 according to the first embodiment is a non-stationary flush toilet device that can be used as a nursing toilet disposed at a bedside. The flush toilet device 1 includes a toilet body 2, a crushing / pumping device 4 that crushes and discharges dirt and cleaning water discharged from the toilet body 2, and a flexible device for supplying the toilet body 2 with cleaning water. Indoor water supply pipe 6 and an indoor drainage pipe 8 for discharging dirt and washing water from the crushing and pumping device 4.

  Further, since the flush toilet device 1 is a non-stationary type and is movable, a plurality of legs 12 are attached to the lower surface of the toilet body 2, and the legs 12 support the toilet body 2 on the floor 10. It is supposed to. Further, a flip-up type armrest 14 is attached to the toilet body 2 so as to support the standing and sitting of the user and further ensure the balance of the sitting state.

  As shown in FIG. 2, the flush toilet device 1 is disposed on a floor 10 of an indoor 16 a of a building 16. Further, the indoor water supply pipe 6 is connected to an outdoor water supply pipe 18 arranged at the outdoor 16b, and the indoor drainage pipe 8 is connected to an outdoor drainage pipe 20 arranged at the outdoor 16b. In this way, the flush toilet 1 according to the present embodiment can discharge the waste discharged into the toilet main body 1 to the outside.

  As shown in FIG. 2, the toilet body 2 of the flush toilet device 1 includes a bowl portion 22 provided on the front side of the toilet body 2 for receiving dirt, and a bowl portion 22 provided on an upper rear portion of the bowl portion 22 for cleaning. The apparatus includes a water supply device 24 for supplying water and a drain trap line 26 provided to communicate with the bottom of the bowl portion 22 for discharging dirt together with washing water. The water supply device 24 includes a water supply valve 28 connected to the downstream end of the indoor water supply pipe 6, and a water supply passage 30 for supplying wash water from the water supply valve 28 to the bowl portion 22. Further, at the downstream end of the drain trap line 26, a discharge port 32 for discharging dirt and washing water to the crushing and feeding device 4 is formed.

Here, the toilet body 2 of the flush toilet device 1 of the present embodiment described above is a flush toilet that discharges dirt by a drop of the flush water in the bowl portion 12. However, the toilet body 2 is not limited to this type, and is applicable to a siphon-type or siphon-jet type toilet, or a flap valve-type toilet in which a flap valve is provided at an outlet 32 of the toilet body 2. .
Further, the water supply device 24 may be of a tank type that supplies cleaning water from a water storage tank.

  As shown in FIG. 2, the crushing / pumping device 4 of the flush toilet apparatus 1 includes a crushing unit 34 for crushing filth, and a crushing unit 36 for pumping the crushed filth to the indoor drain pipe 8. The crushing unit 34 and the pressure feeding unit 36 are provided with an electric motor 38 that is also used to drive them. Here, the electric motor 38 is a DC brushless motor, and can perform variable speed control.

  Further, the flush toilet device 1 has an operation unit 40 operated by a user, a notification unit 42 for notifying the user of status information of the flush toilet device 1, and a user operating the operation unit 40. A control unit 44 for controlling the water supply device 24 and the crushing and feeding device 4 and for notifying the status information of the flush toilet device 1 to the notifying unit 42 is provided.

  The operation unit 40 is provided with operation switches and the like, and the user can operate the start of the cleaning operation by the operation switches and the like. When an operation switch or the like of the operation unit 40 is operated, an operation command is transmitted to the control unit 44, and the control unit 44 sends a water supply command to the water supply device 24 based on the command, and the water supply device 24 Water is supplied to the section 22 for a predetermined time, and the toilet body 4 is washed. Further, the control unit 30 sends an operation signal to the crushing and feeding device 4 to operate the crushing and feeding device 4. Further, the control unit 44 sends the state information of the flush toilet device 1 to the notification unit 42. The notification unit 42 includes an LED lamp and / or a small speaker, and can notify the user of the status information visually and / or by voice. Further, the notification unit 42 can turn on or blink the LED lamp in accordance with a command from the control unit 44 to notify the user of the abnormality.

  Next, the pulverizing / pumping device 4 of the flush toilet device 1 will be described with reference to FIGS. FIG. 3 is a sectional view showing a crushing and pumping device of the flush toilet device according to the first embodiment of the present invention, FIG. 4 is an enlarged sectional view showing a pumping section of the crushing and pumping device, and FIG. FIG. 6 is an external view of the pumping chamber of the pumping section as viewed obliquely from below with the lower cover removed, and FIG. 6 is an external view of the pumping chamber of the pumping section of the pulverizing pumping apparatus as viewed from directly below with the lower cover removed. FIG. 7 is an external view showing only the impeller of the pumping unit and viewed from obliquely below, and FIG. 8 is an external view of only the impeller of the pumping unit and viewed from directly below.

As shown in FIG. 3, the pulverizing / pumping device 4 is connected to the discharge port 32 of the drain trap line 26 of the above-described toilet bowl main body 2 so that dirt flows in with the washing water.
The crushing and pressure feeding device 4 includes a storage tank 46, and the crushing unit 34 is provided inside the storage tank 46. The crushing section 34 has a crushing chamber 48, and the crushing chamber 48 is formed inside the peripheral wall 48a. The peripheral wall 48a of the crushing chamber 48 communicates on one side with the outlet 32 of the drain trap pipe 26 described above. At the lower part of the crushing chamber 48, a disk 50 for stirring the filth in the crushing chamber 48 is provided. The disk 50 is directly connected to a rotating shaft 52 attached to the electric motor 38 and is rotatable. Further, a large number of projections 50a are formed on the upper surface of the disk 50, so that dirt is easily caught on these projections 50a and is easily stirred.

  Specifically, the arrow in FIG. 3 indicates the flow state of the dirt and the washing water, and as apparent from this arrow, the dirt falling on the disk 50 is rotated together with the cleaning water by the rotation of the disk 50. It moves to the outer peripheral side and collides with the peripheral wall 48a, then rises along the peripheral wall 48a, and further descends on the disk 50 while moving to the inner peripheral side. The waste is thus stirred and crushed while turning vertically.

  As shown in FIG. 3, a large number of passage openings 48b of a predetermined size are formed near the outer peripheral side of the disk 50 on the peripheral wall 48a. These passage openings 48b allow only dirt crushed to a predetermined size or less to pass through the peripheral wall 48a, while restricting the passage of dirt larger than a predetermined size.

  Further, a pressure feeding section 36 is provided below the pulverizing chamber 48 of the pulverizing section 34 in the storage tank 46. In addition, a flow path 54 is formed between the outer peripheral side of the passage opening 48b of the peripheral wall 48a in the storage tank 46 and the pumping section 36 for moving the crushed dirt and the washing water.

  Next, the pumping unit 36 of the crushing / pumping device 4 will be described in detail with reference to FIGS. The pumping section 36 includes a pump chamber 56, and a lower cover 57 is attached to a lower portion of the pump chamber 56, and an inflow port 58 into which dirt and washing water flows is formed at the center of the lower cover 57. I have. An outlet 60 from which dirt and washing water flows out is formed on the outer peripheral side of the pump chamber 56. The pump chamber 56 is provided with two impellers 62 and 64. The two impellers 62 and 64 are coupled to the lower end of the rotating shaft 52 via a mounting plate 63 and are rotated by the electric motor 38. It has become.

  The two impellers 62 and 64 have the same shape, are arranged point-symmetrically in a plan view, and have a radius from a central portion around the inflow port 58 by the inner wall surfaces 62a and 64a of the impellers 62 and 64, respectively. Two radial flow paths 66 and 68 extending outward in the direction are formed. Further, between the outer peripheral side wall surfaces 62b, 64b of the impellers 62, 64 and the inner peripheral wall 56a of the pump chamber 56, circumferential flow passages 70, 72 extending in the circumferential direction are formed, respectively. The upstream ends 70 and 72 communicate with the radial flow paths 66 and 68, respectively, and the downstream ends communicate with the outlet 60 of the pump chamber 56.

Here, the two radial flow paths 66 and 68 formed by the two impellers 62 and 64 of the pumping section 36 are a single flow path (shown by hatching in FIG. 6) extending substantially linearly as a whole. The flow path P) is formed.
That is, as shown in FIG. 8, both of the two radial flow paths 66 and 68 have an angle α of a branch portion with another adjacent radial flow path on the upstream side of the radial flow path of approximately 180 °. It is formed in degrees. In other words, there is no branch at an acute angle (less than 90 degrees) upstream of the radial flow path.
Further, at the radially outer ends 66a, 68a of the two radial flow paths 66, 68, the flow path width W is formed so as to gradually increase. Specifically, as shown in FIG. 8, the flow path width W is determined by the length of a straight line orthogonal to the straight line L indicating the position of the center of the two radial flow paths 66 and 68 in plan view. You.

Further, in the impellers 62, 64, the lower ends of the inner side wall surfaces 62a, 64a and the lower ends of the outer peripheral side wall surfaces 62b, 64b are closed by connecting walls 62c, 64c. Here, chamfers 62d, 64d are formed between the inner wall surfaces 62a, 64a of the two impellers 62, 64 and the connecting walls 62c, 64c (see FIG. 5).
Further, since the inner wall surfaces 62a, 64a, the outer peripheral wall surfaces 62b, 64b, and the connecting walls 62c, 64c of the impellers 62, 64 function as eddy-current generation preventing walls, the radial flow of the pump chamber 56 is reduced. In a region other than the space where the passages 66 and 68 are formed, there is no region where a negative pressure is generated, so that a vortex is not generated.

Next, the development of the present invention by the present inventors will be described with reference to FIGS.
First, as shown in FIG. 9, the design concept of the conventional flush toilet apparatus is that only a small pulverized product flows into the pumping chamber (pump chamber) of the pumping section. (8 channels).

  In such a conventional flush toilet device, when foreign substances such as "box tissue" and "flowable ass wipe" are washed away, as shown in FIG. Since it is only crushed to the state, the fibrous foreign matter F (see FIGS. 10 and 11 (a)) that has flowed into the pressure feeding unit is caught in the narrow flow path (the tip of the impeller 80, etc.) of the pressure feeding unit, and this hooking is performed. The fibrous foreign matter F that has been produced grows large one after another with the new fibrous foreign matter F intertwined with each other, and a problem arises in that the narrow flow path in the pumping unit is blocked (see FIG. 11A).

  To solve this problem, the present inventors first reduced the number of impellers so that the fibrous material did not catch on the tip of the impeller. More specifically, as shown in FIG. 11B, the number of impellers is two (impellers 62 and 64), and these two impellers 62 and 64 have the same shape and the flow formed at the center is They were arranged point-symmetrically in plan with the entrance as the center. Here, the two radial flow paths formed by these two impellers 62 and 64 are generally linear flow paths as a whole (see FIG. 6). That is, both the two radial flow paths 66 and 68 are formed such that the angle α of the branch portion with another adjacent radial flow path on the upstream side of the radial flow path is substantially 180 degrees ( See FIG. 8). In other words, there is no branch at an acute angle (less than 90 degrees) upstream of the radial flow path. As a result, the fibrous foreign matter F can be reliably prevented from being caught at the tip of the impeller 80 or the like.

  By reducing the number of impellers, for example, from eight to two, the flush toilet device according to the present invention has lower pumping performance (pump performance) than the conventional toilet device, but the present inventors have found that The pumping performance (pumping performance) is the same level as that of the conventional toilet device by increasing the height of the pumping chamber and the total area of the impeller surface, and smoothly discharging without generating a vortex (which causes pressure loss). Could be secured.

  However, as shown in FIG. 11B, the reduced number of impellers causes a negative pressure portion NP to be generated on the back side of the impellers 62 and 64 in the pumping chamber (pump chamber). As a result, the sewage extruded radially outward by the centrifugal force flows backward in the radial direction, where a vortex V is generated and the pumping performance (pumping performance) is reduced. Due to the long-term stay, the fibrous foreign matter F becomes entangled and grows large, and a new problem occurs that the flow path of the pumping chamber is blocked.

  Here, a new problem caused by the generation of the vortex V is a problem caused by reducing the number of impellers, and does not occur in a conventional toilet apparatus having a large number of impellers.

  In response to the new problem of the generation of the vortex V, the present inventors, as shown in FIG. 11 (c), use a space other than the minimum required flow path to rotate the impeller and guide the wastewater to the drain. By filling the sewage, the backflow of sewage (the generation of eddy current) was prevented.

  As described above, the present inventors have made “the number of impellers smaller” so that the fibrous foreign matter flowing into the pumping chamber (pump chamber) is discharged from the drain port without growing, It is possible to prevent the flow path of the pumping chamber (pump chamber) from being blocked by foreign matter in the shape of a whirlpool. Furthermore, by "minimally filling the space other than the flow path," It is possible to prevent the generation and to more reliably prevent the fibrous foreign substances from becoming entangled and growing large.

  Next, the operation (action) of the flush toilet device according to the above-described first embodiment of the present invention will be described with reference to FIGS. 2 and 12 to 14. 12 to 14 are cross-sectional views showing the operation of the crushing / pumping unit of the flush toilet device according to the first embodiment of the present invention.

  First, when a user operates an operation switch or the like of the operation unit 40 to wash the toilet body 2 with washing water, a washing operation is started. When an operation switch or the like of the operation unit 40 is operated, an operation command is transmitted to the control unit 44, and the control unit 44 sends a water supply command to the water supply device 24 based on the command, and the water supply device 24 Is supplied for a predetermined time, and the toilet body 4 is washed. Further, an operation command is sent from the control unit 44 to the electric motor 38, and the rotation operation of the electric motor 38 is started.

  The dirt and the washing water are discharged from the drain trap line 26 due to the head of the washing water, flow into the pulverizing chamber 48 of the pulverizing and feeding device 4 through the discharge port 32, and descend on the disk 50. In the crushing chamber 48, the disc 50 has already been rotated, and the dirt that has dropped onto the disc 50 moves to the outer peripheral side by the rotation of the disc 50 together with the washing water, and collides with the peripheral wall 48a. It rises along the path, and further descends while moving inward, and is thus stirred and crushed while turning vertically (see FIG. 3).

  Next, as shown in FIGS. 12 to 14, a large number of passage openings 48b of a predetermined size are formed near the outer peripheral side of the disk 50 of the peripheral wall 48a. Among them, the one smaller than the size of the passage opening 48b is discharged from the passage opening 48b to the downstream channel 54. In addition, the filth larger than the size of the passage opening 48b is continuously stirred and crushed in the crushing chamber 48 until the sewage becomes smaller than a predetermined size.

  The pulverized dirt flows into the pump chamber 56 together with the washing water from the flow path 54 through an inlet 58 formed at the center of the lower surface of the pump chamber 56 of the pumping unit 36. The dirt and the washing water flowing into the pump chamber 56 flow into two radial flow paths 66 and 68 formed by the two impellers 62 and 64, respectively, and from the central part of the pump chamber 56, respectively. Due to the centrifugal force generated by the fluid 64, the fluid flows radially outward. Further, the dirt and the washing water pushed out to the outer peripheral side of the pump chamber 56 by the centrifugal force flow along the two circumferential flow paths 70 and 72 in the circumferential direction.

  Thereafter, the dirt and cleaning water in the pump chamber 56 are discharged from the outlet 60. The dirt and washing water discharged by the pumping unit 36 pass through the indoor drain pipe 8 and are discharged to the outdoor drain pipe 20, and the operation of discharging the dirt is completed.

  Next, the operation and effect of the flush toilet device 1 according to the above-described embodiment will be described. First, in the flush toilet apparatus 1 according to the present embodiment, since the centrifugal-type pressure feeding section 36 is provided, it is possible to discharge a high-lift filth using the thin and long flexible indoor drainage pipe 8. In addition, since a passage opening 48b is formed in the peripheral wall 48a of the pulverizing chamber 48 for allowing only the dirt pulverized to a predetermined size or less in the pulverizing unit 34 to pass therethrough, large unpulverized dirt flows into the pumping unit 36 and the pumping unit 36 The clogging of the 36 pump chambers 56 can be prevented. Furthermore, when a foreign substance such as a “box tissue” or “flowable towel wipe” is flown into the toilet body 2, the foreign substance is pulverized by the pulverizing section 34 into a fibrous form and flows into the pumping section 36. There is a problem that the pump chamber 56 is caught and entangled in the pump chamber 56 to grow large and clog the pump chamber 56. However, in the flush toilet device 1 according to the present embodiment, the pump chamber 56 is provided with the two radial flow paths 66 and 68, and furthermore, the two radial flow paths 66 and 68 are substantially straight as a whole. The radial flow path is formed by a single flow path P extending in the shape of a circle. That is, each of the radial flow paths has an angle of approximately 180 degrees with the adjacent radial flow path on the upstream side of the radial flow path. In other words, since there is no acute angle (less than 90 degrees) branch portion on the upstream side of the radial flow path, even when a fibrous foreign substance flows, the pump chamber The fibrous foreign matter can be discharged without being caught in the inside 56. As a result, according to the flush toilet apparatus 1 of the present embodiment, it is possible to prevent the fibrous foreign matter from growing large in the pump chamber 56 of the pumping section 36 and clogging the pump chamber 56.

  Next, the two radial flow paths 66 and 68 of the pumping section 36 are formed by a single flow path P that extends substantially linearly as a whole, that is, the radial flow paths are both radial flow paths. Is formed at an angle of about 180 degrees with the other adjacent radial flow path on the upstream side of the impeller 62.64 in the area where the radial flow paths 66 and 68 do not exist on the outer peripheral portion of the impeller 62.64. The negative pressure part NP is generated, and the dirt and the washing water pushed out to the circumferential flow path by the centrifugal force flow into the negative pressure part NP, and stay in the negative pressure part as a vortex for a long time. Are entangled and grow large, which blocks the pumping section 36. However, even in such a case, according to the flush toilet device 1 of the present embodiment, the vortex generation preventing wall is provided in a region where the radial flow paths 66 and 68 do not exist on the outer peripheral portions of the impellers 62 and 64. Therefore, the fibrous foreign matter generated by the generation of the eddy current is prevented from becoming entangled and growing large, thereby preventing the flow path of the pump chamber 56 of the pumping unit 36 from being clogged. Can be prevented.

  In addition, according to the flush toilet device 1 according to the present embodiment, the vortex generation preventing wall is provided in substantially the entire area of the outer peripheral portions of the impellers 62 and 64 where the radial flow paths 66 and 68 do not exist. In addition, there is almost no region where a vortex may be generated, and it is possible to more reliably prevent the vortex from being generated. This prevents the fibrous foreign substances from becoming entangled with each other and growing large, preventing clogging of the flow path of the pump chamber 56 of the pumping unit 36, and further preventing deterioration of the pumping performance due to the generation of the vortex.

  Furthermore, in the flush toilet device 1 according to the present embodiment, the radial flow paths 66 and 68 of the pumping unit 36 are formed such that the flow path width gradually increases at radially outer ends. Since it is possible to prevent the fibrous foreign matter from being caught at the radially outer ends of the radial flow paths 66 and 68, it is possible to prevent the fibrous foreign matter from becoming entangled with the caught fibrous foreign substance one after another and growing large. it can. Thereby, it is possible to prevent the flow path from being clogged in the pressure feeding unit.

  Next, a flush toilet device according to a second embodiment of the present invention will be described with reference to FIGS. Since the flush toilet device according to the second embodiment of the present invention has the same basic structure as the flush toilet device according to the first embodiment shown in FIGS. 1 to 8, only different portions will be described below. FIG. 15 is an external view of the pumping chamber of the pumping unit of the crushing / pumping device for a flush toilet according to the second embodiment of the present invention viewed from directly below with a lower cover removed, and FIG. 16 is a second embodiment of the present invention. It is a bottom view which shows the impeller of the pulverization pumping part of the flush toilet apparatus by embodiment.

  In the flush toilet device according to the second embodiment, only one impeller 86 is provided in the pump chamber 84 of the pressure feeding section 82. The one impeller 86 has an inner wall surface 86a, and the inner wall surface 86a forms one radial flow path 88 extending radially outward from the inlet 58. A circumferential flow path 90 extending in the circumferential direction is formed between the outer circumferential side wall surface 86b of the impeller 86 and the inner circumferential wall 56a of the pump chamber 56, and the upstream end of the circumferential flow path 90 has a radial flow path. A passage 88 communicates with a downstream end of which communicates with an outlet 60 of the pump chamber 56.

Here, one radial flow path 88 formed by one impeller 86 of the pumping unit 36 is a single flow path extending substantially linearly as a whole (flow path P hatched in FIG. 15). Is formed. In other words, since there is one radial flow path, there is no branch on the upstream side of the radial flow path. (There is no description of the angle α of the branch because there is no branch.)
Also, at the radially outer end 88a of the radial channel 88, similarly to the embodiment shown in FIG. 8 described above, the channel width W is formed so as to gradually increase.

  Further, in the impeller 86, a portion between the lower end of the inner wall surface 86a and the lower end of the outer peripheral side wall surface 86b is closed by a connecting wall 86c. The existence of the inner wall surface 86a, the outer peripheral wall surface 86b, and the connecting wall 86c of the impeller 86 functions as an eddy current generation preventing wall, and serves as a space other than the space where the radial flow path 88 of the pump chamber 56 is formed. In the region, there is no region where a negative pressure is generated, so that no vortex is generated.

  Also in the flush toilet device according to the second embodiment, the same operation and effect as in the first embodiment described above, that is, even when foreign matter that can be crushed only to a fibrous state in the crushing section is flown, This fibrous foreign matter can be prevented from blocking the flow path of the pressure feeding unit.

  Next, a flush toilet device according to a third embodiment of the present invention will be described with reference to FIGS. The flush toilet device according to the third embodiment of the present invention has the same basic structure as the flush toilet device according to the first embodiment shown in FIGS. 1 to 8, and therefore, only different portions will be described below. FIG. 17 is an external view of the pumping chamber of the pumping unit of the crushing / pumping device for a flush toilet according to the third embodiment of the present invention viewed from directly below with a lower cover removed, and FIG. 18 is a second embodiment of the present invention. It is a bottom view which shows the impeller of the pulverization pumping part of the flush toilet apparatus by embodiment.

  In the flush toilet device according to the third embodiment, three impellers 88, 90, and 92 are provided in the pump chamber 94 of the pumping section 92. Each of these three impellers 88, 90, 92 has inner wall surfaces 88 a, 90 a, 92 a, and three radial directions extending radially outward from the inlet 58 by the inner wall surfaces 88 a, 90 a, 92 a. Channels 94, 96, 98 are formed. Further, between the outer peripheral side wall surfaces 88b, 90b, 92b of the impellers 88, 90, 92 and the inner peripheral wall 56a of the pump chamber 56, circumferential flow paths 100, 102, 104 extending in the circumferential direction are formed. The directional flow paths 100, 102, 104 are configured such that their upstream ends communicate with the radial flow paths 94, 96, 98, and their downstream ends communicate with the outlet 60 of the pump chamber 56.

Here, all of the three radial flow paths 94, 96, 98 formed by the three impellers 88, 90, 92 of the pumping section 36 are connected to another radial flow path upstream of the radial flow path. The angle of the branch with the road is approximately 120 degrees. In other words, there is no branch at an acute angle (less than 90 degrees) upstream of the radial flow path.
Further, at the radially outer ends 94a, 96a, 98a of the radial flow paths 94, 96, 98, the flow path width W is formed so as to gradually increase as in the embodiment shown in FIG. ing.

  Further, in the impellers 88, 90, 92, the lower ends of the inner side wall surfaces 88a, 90a, 92a and the lower ends of the outer peripheral side wall surfaces 88b, 90b, 92b are closed by connecting walls 88c, 90c, 92c. The presence of the inner wall surfaces 88a, 90a, 92a, the outer peripheral wall surfaces 88b, 90b, 92b, and the connecting walls 88c, 90c, 92c of the impellers 88, 90, 92 functions as a vortex generation preventing wall, and the pump In a region other than the space in which the radial flow paths 94, 96, and 98 of the chamber 56 are formed, there is no region where a negative pressure is generated, thereby preventing a vortex from being generated.

  Also in the flush toilet device according to the third embodiment, the same operation and effect as in the above-described first embodiment, that is, even when a foreign matter that can be pulverized only to a fibrous state in the pulverizing section is flown, This fibrous foreign matter can be prevented from blocking the flow path of the pressure feeding unit.

  Next, a flush toilet device according to a fourth embodiment of the present invention will be described with reference to FIGS. The flush toilet device according to the fourth embodiment of the present invention has the same basic structure as the flush toilet device according to the first embodiment shown in FIGS. 1 to 8, and therefore, only different portions will be described below. FIG. 19 is an external view of the pumping chamber of the pumping unit of the crushing / pumping device for a flush toilet according to the fourth embodiment of the present invention viewed from directly below with the lower cover removed, and FIG. 20 is a fourth embodiment of the present invention. It is a bottom view which shows the impeller of the pulverization pumping part of the flush toilet apparatus by embodiment.

  Four impellers 110, 112, 114 and 116 are provided in the pump chamber 108 of the pumping section 106 in the flush toilet device according to the fourth embodiment. Each of these four impellers 110, 112, 114, 116 has inner wall surfaces 110a, 112a, 114a, 116a, and is radially outward from the inlet 58 by these inner wall surfaces 110a, 112a, 114a, 116a. Are formed to extend in the radial direction. Further, between the outer peripheral side walls 110b, 112b, 114b of the impellers 110, 112, 114 and the inner peripheral wall 56a of the pump chamber 56, circumferential flow paths 126, 128, 130 extending in the circumferential direction are formed. The upstream ends of the directional flow passages 126, 128, and 130 communicate with the radial flow passages 118, 120, 122, and 124, and the downstream ends thereof communicate with the outlet 60 of the pump chamber 56.

Here, the four radial flow paths 118, 120, 122, and 124 formed by the four impellers 110, 112, 114, and 116 of the pumping unit 36 are all adjacent to the upstream side of the radial flow path. Is formed at an angle of 90 degrees with the radial flow path. In other words, there is no branch at an acute angle (less than 90 degrees) upstream of the radial flow path.
Also, at the radially outer ends 118a, 120a, 122a, and 124a of the radial channels 118, 120, 122, and 124, the channel width W gradually increases as in the embodiment shown in FIG. 8 described above. It is formed as follows.

  Further, in the impellers 110, 112, 114, and 116, connecting walls 110c, 112c, 114c, and 116c are provided between the lower ends of the inner side walls 110a, 112a, 114a, and 116a and the lower ends of the outer peripheral side walls 110b, 112b, 114b, and 116b. Is closed by The presence of the inner wall surfaces 110a, 112a, 114a, 116a, the outer peripheral wall surfaces 110b, 112b, 114b, 116b, and the connecting walls 110c, 112c, 114c, 116c of the impellers 110, 112, 114, 116 causes eddy currents. There is no area where negative pressure is generated in a region other than the space where the radial flow passages 118, 120, 122 and 124 of the pump chamber 56 are formed, functioning as a generation preventing wall, thereby generating a vortex. Not to be.

  Also in the flush toilet device according to the fourth embodiment, the same operation and effect as in the above-described first embodiment, that is, even when a foreign matter that can be pulverized only to a fibrous state in the pulverizing section is flown, This fibrous foreign matter can be prevented from blocking the flow path of the pressure feeding unit.

DESCRIPTION OF SYMBOLS 1 Rinse toilet apparatus 2 Toilet main body 4 Crushing and pumping apparatus 6 Indoor water supply pipe 8 Indoor drainage pipe 24 Water supply apparatus 26 Drain trap conduit 32 Outlet 34 Crushing sections 36, 82, 92, 106 Compression section 38 Electric motor 48 Crushing chamber 48a Peripheral wall 48b Passage opening 50 Disk 54 Flow path 56, 84, 94, 108 Pump chamber 58 Inlet 60 Outlet 62, 64, 86, 88, 90, 92, 110, 112, 114 Impeller 62a, 64a, 86a, 88a, 90a, 92a, 110a, 112a, 114a Inner wall surfaces 62b, 64b, 86b, 88b, 90b, 92b, 110b, 112b, 114b Outer side wall surfaces 62c, 62c, 86c, 88c, 90c, 92c, 110c, 112c, 114c Connecting wall 66, 68, 88, 94, 96, 98, 118, 120, 122 The radial flow paths 66a, 68a, 8a, 88a, 90a, 92a, 110a, 112a, end 70,72,90,100,102,104,126,128,130 circumferential flow path 114a radially outward

Claims (6)

A non-stationary flush toilet device,
The toilet body,
Water supply means for supplying flush water to the toilet body,
A crushing unit for crushing the waste discharged together with the washing water from the toilet body,
A pumping section for pumping the dirt and washing water crushed by the crushing section ,
A flexible drain pipe for discharging the dirt and washing water pumped by the pumping unit to the outside,
Provided between the crushing unit and the pressure feeding unit, having a passage regulating unit that sends only the filth crushed to a predetermined size or less in the crushing unit and sends the filth to the pressure feeding unit,
The pumping unit includes an inlet formed in a central portion below the pumping unit, an outlet formed in an outer peripheral portion of the pumping unit, one or more impellers rotating in the pumping unit, and the impeller. A mounting plate attached to the lower surface thereof, one or more radial flow paths communicating with the inflow port and extending toward the outer circumference, and a circumferential flow path extending in the circumferential direction on the outer circumference of the impeller and communicating with the outflow port. A centrifugal pumping section with
When there are a plurality of the radial flow paths, in all the radial flow paths, a branch portion with another adjacent radial flow path on the upstream side of the radial flow path is formed at an angle of 90 degrees or more ,
The impeller includes an inner wall surface, an outer peripheral wall surface, and a connection wall that connects a lower end of the inner wall surface and a lower end of the outer peripheral wall surface,
A flush toilet device , wherein the width of the radial path is formed wider than the opening width of the inflow port. A non-stationary flush toilet device,
The toilet body,
Water supply means for supplying flush water to the toilet body,
A crushing unit for crushing the waste discharged together with the washing water from the toilet body,
A pumping section for pumping the dirt and washing water crushed by the crushing section ,
A flexible drain pipe for discharging the dirt and washing water pumped by the pumping unit to the outside,
Provided between the crushing unit and the pressure feeding unit, having a passage regulating unit that sends only the filth crushed to a predetermined size or less in the crushing unit and sends the filth to the pressure feeding unit,
The pumping unit includes an inlet formed in a central portion below the pumping unit, an outlet formed in an outer peripheral portion of the pumping unit, one or more impellers rotating in the pumping unit, and the impeller. A mounting plate attached to the lower surface thereof, one or more radial flow paths communicating with the inflow port and extending toward the outer circumference, and a circumferential flow path extending in the circumferential direction on the outer circumference of the impeller and communicating with the outflow port. A centrifugal pumping section with
When there are a plurality of the radial flow paths, in all the radial flow paths, a branch portion with another adjacent radial flow path on the upstream side of the radial flow path is formed at an angle of 90 degrees or more ,
The impeller includes an inner wall surface, an outer peripheral wall surface, and a connection wall that connects a lower end of the inner wall surface and a lower end of the outer peripheral wall surface,
A flush toilet device , wherein a chamfer is formed between the inner wall surface of the impeller and the connection wall . A non-stationary flush toilet device,
The toilet body,
Water supply means for supplying flush water to the toilet body,
A crushing unit for crushing the waste discharged together with the washing water from the toilet body,
A pumping section for pumping the dirt and washing water crushed by the crushing section ,
A flexible drain pipe for discharging the dirt and washing water pumped by the pumping unit to the outside,
Provided between the crushing unit and the pressure feeding unit, having a passage regulating unit that sends only the filth crushed to a predetermined size or less in the crushing unit and sends the filth to the pressure feeding unit,
The pumping unit includes an inlet formed in a central portion below the pumping unit, an outlet formed in an outer peripheral portion of the pumping unit, one or more impellers rotating in the pumping unit, and the impeller. A mounting plate attached to the lower surface thereof, one or more radial flow paths communicating with the inflow port and extending toward the outer circumference, and a circumferential flow path extending in the circumferential direction on the outer circumference of the impeller and communicating with the outflow port. A centrifugal pumping section with
When there are a plurality of the radial flow paths, in all the radial flow paths, a branch portion with another adjacent radial flow path on the upstream side of the radial flow path is formed at an angle of 90 degrees or more ,
The impeller includes an inner wall surface, an outer peripheral wall surface, and a connection wall that connects a lower end of the inner wall surface and a lower end of the outer peripheral wall surface,
A flush toilet device , wherein a space between an upper end of an inner wall surface of the impeller and an upper end of an outer peripheral side wall surface is closed by a lower surface of the mounting board . The pumping portion is a vortex generation preventing wall formed by an inner wall surface, an outer peripheral wall surface, and a connection wall of the impeller, and is formed in a region where the radial flow path does not exist on the outer peripheral portion of the impeller. The flush toilet device according to any one of claims 1 to 3, further comprising a vortex generation preventing wall for preventing the generation of the eddy current. The flush toilet device according to claim 4 , wherein the vortex generation preventing wall of the pumping section is provided in substantially the entire area of the outer peripheral portion of the impeller where the radial flow path does not exist. The flush toilet device according to any one of claims 1 to 5 , wherein the radial flow path of the pumping section is formed so that the flow path width is gradually increased at a radially outer end.

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