JP7073750B2 - Toilet bowl device - Google Patents

Description

The present invention relates to a toilet bowl device, and more particularly to a toilet bowl device that crushes and discharges filth.

As shown in Patent Document 1, a toilet bowl device in which a stirring mechanism is provided at the bottom of the bowl portion is known. In this toilet device, first, the stirring mechanism rotates to stir the filth and the washing water so that the filth and the washing water are in a uniform flow state as a whole. Next, the pressurized fluid supply unit connected to the water pipe discharges filth and the like using the water pressure, and completes the cleaning.

Japanese Unexamined Patent Publication No. 2000-8442

In the above-mentioned toilet bowl device, since the filth is agitated in the bowl portion, the filth is scattered and adhered to the inside of the bowl portion, and there is a concern that the scattered filth remains in the bowl portion even after cleaning.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a toilet bowl device capable of suppressing filth from remaining in a bowl portion.

The present invention is a toilet device for crushing and discharging filth, a bowl portion having a filth receiving surface on which a pool surface of stored water is formed and receiving filth, and a water supply device for supplying water into the bowl portion. A crushing device that crushes filth in the bowl portion, a discharge path that communicates with the bowl portion, a discharge device that discharges water in the bowl portion to the downstream side, and a control unit that controls the crushing device and the discharge device. The control unit drives the crushing device to crush the filth in the bowl portion, and drives the discharging device to clean the filth crushed by the crushing mode in the bowl portion. A post-crushing discharge mode in which water is discharged together with water, a cleaning water storage mode in which a pool is formed while cleaning the bowl portion with the washing water supplied by the water supply device, and a cleaning water storage mode in which the discharge device is driven. The post-cleaning discharge mode for discharging the accumulated water in the bowl portion formed by the formation mode can be executed, and the control unit can be used in the crushing mode from the water level of the accumulated water surface in the standby state before the start of the cleaning operation. The filth is crushed in the bowl portion in the state of the water level of the low water level, and the control unit starts the post-crushing discharge mode after the start of the crushing mode and the cleaning pool water after the start of the discharge mode. It is a toilet device that starts the formation mode and starts the post-cleaning discharge mode after the start of the cleaning reservoir formation mode.

In the present invention configured as described above, the control unit starts the discharge mode after the start of the pulverization mode, starts the cleaning reservoir formation mode after the start of the discharge mode, and is the cleaning reservoir formation mode. After cleaning, the discharge mode is started after the start. Therefore, even if the filth is scattered and adhered to the filth receiving surface when the crushing mode is executed, the adhering filth can be washed and discharged. Therefore, it is possible to prevent the filth from remaining in the bowl portion.

In the present invention, preferably, the control unit starts the cleaning mode for driving the crushing device after the start of the cleaning reservoir formation mode, and starts the post-cleaning discharge mode after the start of the cleaning mode. ..

In the present invention configured as described above, the control unit starts the cleaning mode for driving the crushing device after the start of the cleaning reservoir formation mode, and starts the post-cleaning discharge mode after the start of the cleaning mode. Therefore, the crushing device can be driven in the cleaning mode to form a swirling flow in the pooled water of the bowl portion, and the inside of the bowl portion can be cleaned by the swirling flow. Therefore, it is possible to further prevent the filth from remaining in the bowl portion.

In the present invention, preferably, the control unit starts a pre-grinding cleaning mode in which the bowl portion is washed with the washing water supplied by the water supply device before the start of the crushing mode.

In the present invention configured as described above, the pre-crushing cleaning mode started before the start of the crushing mode allows the filth adhering to the filth receiving surface of the bowl portion to flow down into the pooled water before the start of the crushing mode. It can crush filth efficiently. Therefore, it is possible to further prevent the filth from remaining in the bowl portion.

In the present invention, the discharge device is preferably a discharge pump.

In the present invention configured as described above, since the discharge device is a discharge pump, filth can be discharged more reliably by pressurization. Further, normally, in the discharge pump, air lock may occur due to the suction of air, but the present invention starts the cleaning reservoir formation mode after the start of the discharge mode, and also starts the cleaning reservoir formation mode. Since the discharge mode is started after cleaning, even if the discharge pump is air-locked during the execution of the discharge mode, it is possible to prevent the filth from remaining in the bowl portion.

According to the toilet bowl device of the present invention, it is possible to prevent filth from remaining in the bowl portion.

It is an overall perspective view which looked at the toilet bowl device by one Embodiment of this invention from the rear diagonally above. It is sectional drawing which shows the toilet bowl apparatus by one Embodiment of this invention. It is a time chart which shows the operation of the water supply device, the crushing device, the discharge pump of the toilet bowl device, and the change of the water level in the bowl part by one embodiment of the present invention. In the toilet bowl device shown in FIG. 2, it is a figure which shows the state which the user uses the toilet bowl main body, and the control unit is executing a standby mode. It is a figure which shows the state which the control part is executing the pre-grinding cleaning mode and the water level lowering mode in the toilet bowl apparatus shown in FIG. It is a figure which shows the state which the control part is executing the crushing mode in the toilet bowl apparatus shown in FIG. FIG. 3 is a diagram showing a state in which the control unit is executing the first discharge mode in the toilet bowl device shown in FIG. 2. It is a figure which shows the state which the control unit is executing the cleaning mode after discharge in the toilet bowl apparatus shown in FIG. FIG. 3 is a diagram showing a state in which the control unit is executing the second discharge mode in the toilet bowl device shown in FIG. 2. FIG. 3 is a diagram showing a state in which the control unit is executing the cleaning reservoir formation mode in the toilet bowl device shown in FIG. 2. It is a figure which shows the state which the control part is executing a cleaning mode in the toilet bowl apparatus shown in FIG. FIG. 3 is a diagram showing a state in which the control unit is executing the third discharge mode in the toilet bowl device shown in FIG. 2. It is a figure which shows the state which the control part is executing the re-cleaning mode in the toilet bowl apparatus shown in FIG. FIG. 3 is a diagram showing a state in which the control unit is executing the fourth discharge mode in the toilet bowl device shown in FIG. 2. It is a figure which shows the state which the control part is executing the reservoir formation mode in the toilet bowl apparatus shown in FIG.

Next, the toilet bowl device according to the embodiment of the present invention will be described with reference to the accompanying drawings. First, the entire structure of the toilet bowl device according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2.

As shown in FIG. 1, the portable toilet device 1 which is a toilet device according to an embodiment of the present invention is a flush toilet device that crushes and discharges filth, and is used in a place other than a normal toilet space, for example. It can be placed in a person's room, bedside in a bedroom, or the like. The portable toilet device 1 can be used for long-term care, and even for elderly people, sick people, etc. who find it difficult or relatively burdensome to walk to the toilet, they can use it in their own room. It is a toilet bowl device. Hereinafter, in the description of one embodiment of the present invention, it is viewed from the user side using the portable toilet device 1 (the user side standing in front of the portable toilet device 1 to use the portable toilet device 1). The front side of the portable toilet device 1 is the front side, the back side is the rear side when viewed from the user, the right side of the portable toilet device 1 is the right side when viewed from the front, and the left side is the left side when viewed from the front. There is.

The portable toilet device 1 includes a toilet bowl main body 2, a water supply device 4 which is a water supply device for supplying wash water to the toilet bowl main body 2, and a frame 6 for supporting the toilet bowl main body 2.

Further, the portable toilet device 1 is a movable non-stationary device. In the portable toilet device 1, the frame base 6a of the frame 6 is not fixed to the floor surface F on which the toilet body 2 or the like is installed, and is formed so as to be movable by the user or the business operator using the wheels 1a or the like. ing.

As shown in FIG. 2, the water supply device 4 is connected to a water supply facility such as a water supply on the building side via a flexible water supply pipe 8. The water supply device 4 is provided at the rear upper portion of the toilet bowl main body 2, and supplies washing water to the bowl portion 10 from the spout 10a formed in the bowl portion 10. The water supply device 4 is a water supply direct pressure type water supply device that supplies washing water to the bowl portion 10 by using the water supply pressure of the tap water. The water supply pipe 8 is formed by a water supply hose or the like.

The toilet body 2 is a drain trap pipe provided on the front side of the toilet body 2 for receiving filth and a drain trap pipe which is provided so as to communicate with the bottom of the bowl 10 and discharges filth together with washing water. It is equipped with a road 12.

The bowl portion 10 has a filth receiving surface 10b that receives filth, a rim portion 10e formed along the upper edge portion of the bowl portion 10, and a spout formed above the filth receiving surface 10b and below the rim portion 10e. It includes a 10a, a tubular portion 10c extending in the vertical direction from the lower portion of the filth receiving surface 10b, and a crushing chamber 10d extending outward from the lower end of the tubular portion 10c.

The filth receiving surface 10b is formed in a mortar shape. On the filth receiving surface 10b, a pool surface W0 (reservoir surface in the standby state) of the stored pool water is formed in the standby state before the start of a series of cleaning operations. At this time, the accumulated water is stored in the lower part of the filth receiving surface 10b, the cylindrical portion 10c, and the crushing chamber 10d. The tubular portion 10c is formed so that the flow path diameter (cross-sectional area diameter) in the top view is substantially constant. The tubular portion 10c forms a relatively short flow path extending in the vertical direction. The crushing chamber 10d forms a small chamber extending to the rear side. The crushing chamber 10d is in a state of storing washing water at the time of crushing the filth. The crushing chamber 10d forms an inclined surface 10f in which the lower bottom surface of the rotating body 26 is raised toward the rear side.

The drain trap pipeline 12 has a connection portion 12a connected to the bottom surface of the bowl portion 10, a rising portion 12b rising from the connection portion 12a so as to form a drain trap, and a top portion 12d forming a linear flow path at the apex of the drain trap. And a descending portion 12f forming a flow path descending from the top portion 12d, and a lateral portion 12g extending slightly above the floor surface F and substantially parallel to the floor surface F from the descending portion 12f.

The connection portion 12a of the drain trap pipeline 12 extends laterally from below the hole 48 of the filter 38 described later to the drain pump 20 described later. The drain trap pipeline 12 forms a convex drain trap structure with at least the rising portion 12b and the top portion 12d. The top portion 12d forms a folded portion such that the bottom surface of the top portion 12d is formed as a flat surface. The height of the bottom surface of the top portion 12d is the height of the pool surface W0 at the initial water level of the bowl portion 10.

The drainage pipe 16 is connected to the lateral portion 12g on the downstream side of the drain trap pipe 12. The drain trap line 12 and the drain line 16 are formed of relatively thin pipes in order to make the portable toilet device 1 movable. The inner diameter of the drain trap pipeline 12 is preferably in the range of 10 mm to 50 mm, more preferably 20 mm. The drainage pipe 16 has a flexible pipe portion 16a formed by a flexible member such as a drain hose. The flexible pipeline portion 16a is connected to the lateral portion 12g on the downstream side of the drain trap pipeline 12. The drainage pipe 16 also includes a drainage pipe (not shown) provided on the building side, and extends continuously from the lateral portion 12g or the flexible pipe portion 16a and is a flexible pipe portion 16a. The part of the pipe where the inner diameter of the pipe is almost the same as that of the above is included. For example, the drainage pipe 16 extends from the lateral portion 12g of the drain trap pipe 12 to a sewage basin (not shown) on the building side. The inner diameter of the drainage pipe 16 is preferably in the range of 10 mm to 50 mm, more preferably 20 mm. Assuming that the discharge capacity (for example, output) of the discharge pump 20, which will be described later, is constant, the discharge flow rate of the washing water is relatively reduced when the length of the drainage pipe line 16 becomes long. On the other hand, when the discharge capacity of the discharge pump 20 is constant and the length of the drainage pipe line 16 is shortened, the discharge flow rate of the washing water is relatively increased. As described above, in the installation environment of the portable toilet device 1 in which the length of the drainage pipe 16 becomes long, the discharge flow rate of the washing water from the portable toilet device 1 per unit time is reduced.

The portable toilet device 1 further includes a crushing device 18 that crushes filth in the bowl portion 10, a discharge pump 20 that discharges the washing water in the bowl portion 10 to the downstream side, and a portable toilet device by the user. An operation unit (not shown) that operates the start of a series of cleaning operations of 1, a control unit 24 that controls a series of cleaning operations of the portable toilet device 1, and a water level detecting device that detects the water level in the bowl unit 10. 32, a vent valve pipeline 34 connected to the drain trap pipeline 12, a vent valve 36 provided in the vent valve pipeline 34, a filter 38 provided between the bowl portion 10 and the discharge pump 20, and a filter 38. It is equipped with.

The crushing device 18 is provided above the rear side of the crushing chamber 10d. The crushing device 18 is arranged in the crushing chamber 10d, and has a rotating body 26 that forms a rotating flow in the pooled water of the bowl portion 10 so as to crush filth, a rotating shaft 28 of the rotating body 26, and a rotating body 26. And an electric motor 30 for driving the rotating shaft 28. The rotating body 26 of the crushing device 18 generates a swirling flow (rotating flow) in the pooled water of the bowl portion 10 by its own rotation, and crushes the filth. The rotating body 26 is formed in a disk shape. The rotating body 26 is mounted substantially horizontally below the ceiling surface of the crushing chamber 10d. The electric motor 30 is electrically connected to the control unit 24 and is controlled by the control unit 24.

The drainage pump 20 is arranged on the upstream side of the drainage trap structure of the drainage trap pipeline 12 that defines the pool surface. The discharge pump 20 forms a centrifugal pump capable of achieving a high lift. The discharge pump 20 pumps the crushed filth in the bowl portion 10 together with the washing water and discharges it through the drain trap pipe line 12 and the drainage pipe line 16. The discharge pump 20 includes a pump chamber 40, an impeller 42 rotated inside the pump chamber 40, a rotating shaft 44 of the impeller 42, and an electric motor 46 for driving the impeller 42 and the rotating shaft 44.

A connecting portion 12a extending from the lower part of the filter 38 is connected to the inlet of the central portion of the pump chamber 40, and a rising portion 12b is connected to the outer peripheral portion of the upper portion of the pump chamber 40. Due to the centrifugal force generated by the rotation of the impeller 42, filth and washing water are pushed out from the pump chamber 40 toward the drain trap pipeline 12 and pumped.

The discharge pump 20 also functions as a water level detecting means for detecting the water level in the bowl portion 10. The discharge pump 20 communicates with the bottom of the bowl portion 10 via the connecting portion 12a. When the water level in the bowl portion 10 is equal to or lower than the predetermined water level W3 near the bottom surface of the bowl portion 10, the discharge pump 20 sucks the air in the crushing chamber 10d from the hole 48. When the impeller 42 of the discharge pump 20 rotates in a state of sucking air, the load of the electric motor 46 decreases and the current value decreases. The control unit 24 can determine the airlock state in which air is caught in the discharge pump 20 by the fluctuation of the current value of the electric motor 46. When the control unit 24 determines that the airlock state is determined, the control unit 24 stops driving the electric motor 46. In this way, when the discharge pump 20 sucks air, the discharge pump 20 can detect that the water level in the bowl portion 10 is equal to or lower than the predetermined water level W3. The predetermined water level W3 is the height of the hole 48 at the highest position. Since the predetermined water level W3 is set to a relatively low height near the bottom surface of the bowl portion 10, the amount of residual water below the predetermined water level W3 is reduced, and the amount of residual water at the initial pool surface W0 is the amount of water supplied other than the residual water amount. The replacement rate, which indicates the rate of replacement with the washed water, increases. The predetermined water level W3 is set to a water level at which the substitution rate is preferably 95% or more.

The control unit 24 controls the water supply device 4, the crushing device 18, and the discharge pump 20 by the operation of the operation unit by the user or the self-setting. The control unit 24 has a built-in CPU, memory, and the like for performing these controls. The control unit 24 is electrically connected to the water supply device 4, the crushing device 18, the discharge pump 20, the water level detection device 32, and the like.

The control unit 24 has a standby mode in which the water supply device 4, the crushing device 18, and the discharge pump 20 are in a standby state, a pre-crushing cleaning mode in which the bowl unit 10 is washed with the washing water supplied by the water supply device 4, and the bowl unit 10. A water level lowering mode that lowers the water storage level inside, a crushing mode that drives the crushing device 18 to crush filth in the bowl portion 10, and filth crushed by the crushing mode are discharged together with the washing water in the bowl portion 10. It has a control program that can execute the discharge mode. In the present embodiment, the discharge mode is a first discharge mode in which the filth crushed by the crushing mode is discharged together with the washing water in the bowl part 10, and the bowl part 10 is discharged by the washing water supplied by the water supply device 4. It consists of a post-discharge cleaning mode for cleaning and a second discharge mode that starts after the start of the post-discharge cleaning mode.

The control unit 24 further has a cleaning reservoir formation mode for forming the reservoir water required for cleaning, a cleaning mode for re-cleaning the inside of the bowl portion 10, and a reservoir water in the bowl portion 10 formed by the cleaning reservoir formation mode. It is provided with a control program capable of executing a post-cleaning discharge mode for discharging water and a water storage formation mode for forming water in the bowl portion 10. In the present embodiment, the post-cleaning discharge mode includes a third discharge mode in which the wash water used in the cleaning mode is discharged, a re-cleaning mode in which the bowl portion 10 is re-washed after the third discharge mode, and a re-cleaning mode. It consists of a fourth discharge mode in which the wash water used by the mode is discharged. The control unit 24 also includes a control program capable of executing other operations described later.

The water level detecting device 32 is provided on the outside of the cylindrical portion 10c of the bowl portion 10. The water level detection device 32 is electrically connected to the control unit 24 and transmits water level information to the control unit 24. For example, the water level detecting device 32 can detect that the water level on the pool surface has dropped to a predetermined water level W1 or less corresponding to the cylindrical portion 10c. The water level detection device 32 is a non-contact type capacitance type sensor, but is not limited to this, and may be, for example, a non-contact type microwave sensor.

One end of the ventilation valve pipe line 34 is connected to the top portion 12d on the downstream side of the drainage pump 20 of the drainage trap pipe line 12. Further, the other end of the ventilation valve pipeline 34 is connected to the upper part of the filth receiving surface 10b of the bowl portion 10 above the water discharge port 10a. The ventilation valve pipeline 34 communicates the bowl portion 10 and the drain trap pipeline 12 with each other via a ventilation valve 36 described later.

The vent valve 36 has a function of taking in external air on the bowl portion 10 side into the drain trap pipeline 12. The vent valve 36 is opened by a negative pressure of a predetermined pressure or less. When a siphon phenomenon occurs in the drain trap pipe line 12 or the drainage pipe line 16 due to the discharge pump 20 discharging the washing water to the downstream side, the ventilation valve 36 has a negative pressure equal to or lower than a predetermined pressure due to the siphon phenomenon. It has a valve mechanism that opens the valve. The valve mechanism of the vent valve 36 has a valve mechanism that opens the valve when the pressure on the drain trap pipeline side is lower than the atmospheric pressure and becomes a negative pressure equal to or lower than the valve opening pressure. For the vent valve 36, for example, an umbrella valve can be applied. The vent valve 36 can forcibly terminate the siphon phenomenon at an early stage when the siphon phenomenon occurs.

The filter 38 is arranged on the bottom surface of the bowl portion 10. The filter 38 is provided at the connection portion between the bowl portion 10 and the connection portion 12a. A plurality of holes 48 are formed in the filter 38. The filter 38 has a function of passing filth crushed to a size smaller than a predetermined size by a plurality of holes 48. The filter 38 also has a function of retaining filth that cannot pass through the hole 48 in the crushing chamber 10d, and further crushes the filth that cannot pass through the crushing chamber 10d. The holes 48 of the filter 38 are arranged so as to prevent the discharge pump 20 from being airlocked until the water level in the bowl portion 10 becomes a predetermined water level W3 or less.

Next, the operation (action) of the toilet bowl device according to the above-described embodiment of the present invention will be described with reference to FIGS. 3 to 15. In FIGS. 4 to 15, the portion where the washing water or the like is present is shown by a dotted line.
FIG. 3 is a time chart showing the operation of the water supply device, the crushing device, and the discharge pump of the toilet bowl device according to the embodiment of the present invention, and FIG. 4 is a time chart showing changes in the water level in the bowl portion, and FIG. 4 is used in the toilet bowl device shown in FIG. It is a figure which shows the state which the person is using the toilet body and the control part is executing the standby mode, and FIG. 6 is a diagram showing a state in which the control unit is executing the crushing mode in the toilet bowl device shown in FIG. 2, and FIG. 7 is a diagram showing a state in which the control unit is executing the crushing mode, and FIG. 7 is a diagram showing the control unit in the toilet bowl device shown in FIG. Is a diagram showing a state in which the first discharge mode is being executed, FIG. 8 is a diagram showing a state in which the control unit is executing the post-discharge cleaning mode in the toilet bowl device shown in FIG. 2, and FIG. 9 is a diagram. FIG. 10 is a diagram showing a state in which the control unit is executing the second discharge mode in the toilet bowl device shown in FIG. 2, and FIG. 10 is a diagram showing a state in which the control unit executes the cleaning reservoir formation mode in the toilet bowl device shown in FIG. 11 is a diagram showing a state in which the control unit is executing the cleaning mode in the toilet bowl device shown in FIG. 2, and FIG. 12 is a diagram showing a state in which the control unit is executing the cleaning mode in the toilet bowl device shown in FIG. FIG. 13 is a diagram showing a state in which the third discharge mode is being executed, FIG. 13 is a diagram showing a state in which the control unit is executing the re-cleaning mode in the toilet bowl device shown in FIG. 2, and FIG. 14 is a diagram showing a state in which the re-cleaning mode is being executed. FIG. 15 is a diagram showing a state in which the control unit is executing the fourth discharge mode in the toilet bowl device shown in FIG. 15, and FIG. 15 shows a state in which the control unit is executing the reservoir formation mode in the toilet bowl device shown in FIG. It is a figure which shows.
In FIG. 3, on the vertical axis, the ON state and the OFF state of the water supply device 4 are switched, the ON state and the OFF state of the crushing device 18 are switched, and the second output and the ON state of the impeller 42 of the discharge pump 20 are switched. The first output and the OFF state of the above are switched, the change in the height of the water level from the bottom of the bowl portion 10 is shown, and the passage of time and the change in each mode are shown on the horizontal axis.
In FIGS. 4 to 15, for the sake of simplification of the description, a series of cleaning operations is described with a configuration diagram in which the ventilation valve pipeline 34 and the ventilation valve 36 are omitted.

FIG. 2 shows a standby state before the user uses the toilet bowl main body 2. In this standby state, the water supply device 4 is in a stopped state (OFF state), and the crushing device 18 and the discharge pump 20 are also in a stopped state (OFF state).
In FIG. 3, the time t0 is the time when the user starts using the toilet bowl main body 2. The control unit 24 executes a standby mode in which the water supply device 4, the crushing device 18, and the discharge pump 20 are not operated at a time before the time t0. As shown in FIG. 2, at the time before time t0 and at time t0, the water level in the bowl portion 10 is the initial water level (reservoir surface W0 in the standby state).

As shown in FIGS. 3 and 4, from time t0 to t1, the user uses the toilet bowl main body 2, and the filth (stool, urine, toilet paper, etc.) A is in the bowl portion 10. The control unit 24 continues to execute the standby mode in which the water supply device 4, the crushing device 18, and the discharge pump 20 are in the standby state from time t0 to t1.
From time t0 to t1, the water level in the bowl portion 10 is the initial water level and is almost constant, but it is a sanitary cleaning device that is placed on the user's urine, stool, and the toilet bowl body 2 to clean the user's local area, etc. The water level may rise slightly due to water discharged from (not shown). At the time of excretion by the user, the pooled water surface W0 in the bowl portion 10 is formed relatively high and wide up to the initial water level to suppress the adhesion of filth to the dry portion other than the pooled water surface in the bowl portion 10.

As shown in FIGS. 3 and 5, when the user operates an operation switch or the like of the operation unit at time t1, a series of cleaning operations is started. When the operation switch or the like of the operation unit is operated, the operation command is transmitted to the control unit 24, and the control unit 24 starts the pre-grinding cleaning mode in which the bowl unit 10 is washed with the cleaning water supplied by the water supply device 4. .. Further, the control unit 24 drives the discharge pump 20 to start a water level lowering mode in which the water storage surface in the bowl portion 10 is lowered. From time t1 to time t3, there is a time during which the pre-grinding cleaning mode and the water level lowering mode are performed in parallel. In the pre-crushing cleaning mode, the filth receiving surface 10b is cleaned so as to drop the filth on the filth receiving surface 10b into the pooled water.

In the pre-grinding cleaning mode, the control unit 24 sends a water supply command to the water supply device 4, starts a water supply operation from the water supply device 4 to the bowl unit 10, and cleans the bowl unit 10 with cleaning water. The flow rate of the washing water supplied from the water supply device 4 is determined by the water supply pressure of the tap water. As shown by the arrow A1, the filth A is in a state of being moved into the pooled water by the washing water. Specifically, the control unit 24 drives the water supply device 4 from time t1 to time t2 for a set time of about several seconds. The control unit 24 turns the water supply device 4 into an OFF state in which the water supply device 4 is stopped from the time t2 to the time t3. The control unit 24 may supply the water supply device 4 with water from time t2 to time t3. In this way, the instantaneous flow rate of water supply when water is continuously supplied from time t1 to time t3 is smaller than the instantaneous flow rate of water supply when water is supplied continuously from time t1 to time t2. At time t2, the control unit 24 stops the water supply device 4 and ends the pre-grinding cleaning mode.

The control unit 24 starts the pre-grinding cleaning mode before the start of the pulverization mode described later. That is, the pre-grinding cleaning mode and the crushing mode may be started at the same time. Therefore, the filth A adhering to the filth receiving surface of the bowl portion before the start of the crushing mode can be allowed to flow down into the pooled water, and the filth can be efficiently crushed.

As shown in FIG. 3, in the water level lowering mode, the control unit 24 drives the impeller 42 of the discharge pump 20 with the first output from time t1 to time t3 (ON state). The first output of the discharge pump 20 rotates the impeller 42 at a relatively low rotation speed. The first rotation speed of the impeller 42 is lower than the second rotation speed described later. In the water level lowering mode, the washing water is drained by a predetermined flow rate that lowers the water level of the reservoir surface W0 to the position of the reservoir surface W1. As shown by the arrow A1, the washing water is discharged to the drainage pipe line 16 through the drainage trap line line 12. The amount of washing water in the bowl portion 10 is reduced, and the pool surface is lowered to the position of the pool surface W1. Thereby, in the crushing mode executed after the execution of the water level lowering mode, the water accumulation surface in the bowl portion 10 is lowered at the time of crushing the filth, and the splashing of the filth being crushed from the water accumulation surface to the outside of the bowl portion 10 is suppressed. Can be done.

The pre-crushing cleaning mode and the water level lowering mode are executed in parallel, and the water supply device 4 supplies water from time t1, whereas the discharge pump 20 discharges cleaning water from time t1 as described later, so that the inside of the bowl portion 10 The water level is kept almost the same from time t1 to time t2, and gradually decreases from time t2 to time t3.

In the water level lowering mode, the water level in the bowl portion 10 is lowered to the pool surface W1 of the cylindrical portion 10c. As a result, filth can be crushed in the pooled water in a state where the pooled water surface W1 is located in the tubular portion 10c where the flow path diameter does not substantially change in the height direction. Even if the pool surface W1 fluctuates or undulates due to the crushing of filth, the radial fluctuation of the reservoir surface W1 can be reduced in the top view, and the reservoir surface W1 containing the filth being crushed appears to be widened, so that the user can see it. It is possible to suppress the possibility of giving a feeling of disgust.

As shown in FIG. 3, the control unit 24 drives the crushing device 18 from time t1 to time t3. That is, the crushing device 18 is driven during the pre-grinding cleaning mode and / or the water level lowering mode. As a result, a swirling flow is formed in the pooled water, and the filth in the pooled water is separated from the bowl portion 10 and guided downward while being placed on the swirling flow, making it difficult for the filth to remain along the bowl portion 10. Can be done. Therefore, it is possible to prevent the filth from being left in the bowl portion 10, improve the cleaning performance in the bowl portion 10, and efficiently crush the filth in the bowl portion 10. The rotation speed of the rotating body 26 at this time may be different from the rotation speed of the rotating body 26 in the crushing mode. Further, since the rotating body 26 is rotated when the water level is lowered in the water level lowering mode, it is possible to suppress the splashing of filth in the washing water due to the rotating body 26 stirring the washing water.

Further, the water level lowering mode reduces the volume of the washing water stored in the bowl portion 10. Assuming that the rotational energy input by the rotation of the rotating body 26 is constant in the crushing mode, the washing water in the bowl portion 10 is compared with the flow velocity of the swirling flow when the volume of the washing water in the bowl portion 10 is large. When the volume of is small, the flow velocity of the swirling flow becomes relatively high. Therefore, by executing the water level lowering mode, a relatively high-speed swirling flow can be formed in the crushing mode, and filth can be crushed more reliably.

At time t3, after the start of the water level lowering mode, the control unit 24 ends the execution of the water level lowering mode when the water level detecting device 32 detects the lowering of the water level in the bowl portion 10 up to the reservoir surface W1. In this way, the water level detecting device 32 can surely lower the water level in the bowl portion 10 to a predetermined water level in the water level lowering mode.

As shown in FIGS. 3 and 6, at time t3, the control unit 24 drives the crushing device 18 to execute a crushing mode in which the filth is crushed in the bowl unit 10. The control unit 24 drives the crushing device 18, forms a swirling flow (see arrow A2) in the bowl portion 10 by the rotation E of the rotating body 26, and performs a crushing operation of filth. The filth is crushed by the rotary flow in the bowl portion 10. The filth A is crushed into filth a having a predetermined size or less. Since the filth crushing mode is executed after the water level in the bowl portion is lowered by executing the water level lowering mode, washing water and splashing of filth from the filth pool surface W1 to the outside of the bowl portion 10 are suppressed at the time of filth crushing. At the same time, the filth can be reliably crushed by the relatively high-speed rotating flow. The control unit 24 executes the crushing mode at the set time from the time t3 to the time t4, and stops the crushing device 18 at the time t4. In the crushing mode, the control unit 24 stops the water supply device 4 and the discharge pump 20. In the crushing mode, the water level in the bowl portion 10 is generally maintained at the water level of the reservoir surface W1.

As shown in FIGS. 3 and 7, at time t4, the control unit 24 drives the discharge pump 20 to execute the first discharge mode in which the filth crushed by the crushing mode is discharged together with the washing water in the bowl portion 10. Let me. The first discharge mode starts at time t4. In the first discharge mode, after the end of the crushing mode, the control unit 24 stops the crushing device 18 and drives the discharge pump 20 by the second output. The second output of the discharge pump 20 rotates the impeller 42 at a relatively high rotation speed. As shown by the arrow A3, the discharge pump 20 pumps (discharges) the washing water and the filth a to the drainage pipe line 16 via the drainage trap pipe line 12. The filth a can pass through the hole 48 of the filter 38. In this way, the filth a is discharged from the inside of the bowl portion 10. In the first discharge mode, the control unit 24 has stopped the water supply device 4 and the crushing device 18.

In the first discharge mode, almost all the washing water and the filth a in the bowl portion 10 are discharged to the downstream side by the discharge pump 20. Therefore, the water level in the bowl portion 10 drops from the pool surface W1 to the bottom of the bowl portion 10. More specifically, the water level in the bowl portion 10 drops to the bottom of the bowl portion 10, further lower than the hole 48 of the filter 38, and becomes the water level in the connection portion 12a. At this time, the bottom of the bowl portion 10 is in a state where the washing water is almost exhausted.

When the water level in the bowl portion 10 becomes a water level equal to or lower than the predetermined water level W3 near the bottom of the bowl portion 10, the discharge pump 20 sucks the air in the crushing chamber 10d from the hole 48, and the air lock state is established. Stops the drive of the electric motor 46. When the discharge pump 20 is driven and stopped in this way, the discharge pump 20 detects that the water level in the bowl portion 10 has reached a predetermined water level W3 or less as a water level detecting means. After the start of the first discharge mode, the control unit 24 starts the post-discharge cleaning mode described later when the water level of the predetermined water level W3 or lower is detected by the discharge pump 20 which is the water level detecting means. At time t5, the control unit 24 terminates the first discharge mode when the discharge pump 20 is driven and stopped.

As shown in FIGS. 3 and 8, at time t5, the control unit 24 starts a post-discharge cleaning mode in which the bowl unit 10 is washed with the washing water supplied by the water supply device 4. The control unit 24 executes the post-discharge cleaning mode for a set time from time t5 to time t6. The control unit 24 drives the water supply device 4 for a set time from time t5 to time t6. As shown by the arrow A4, the supplied washing water forms a swirling flow along the wall surface of the filth receiving surface 10b, the tubular portion 10c, and the crushing chamber 10d, and removes the filth and sewage adhering to the bowl portion 10. Rinse as if rinsing. The control unit 24 stops the crushing device 18 and the discharge pump 20 from time t5 to time t6. As shown by the arrow A5, the water level in the bowl portion 10 gradually rises from time t5 to time t6, and rises to about the predetermined water level W4. When the water level in the bowl portion 10 rises above the predetermined water level W3, air escapes from the pump chamber 40 of the discharge pump 20, and the discharge pump 20 is in a state where it can be driven again without biting the air.

Since such a post-discharge cleaning mode may be started in the middle of the first discharge mode and ends after the first discharge mode is finished, the control unit 24 may start the post-discharge cleaning mode after the start of the first discharge mode. The cleaning mode is started, and the post-discharge cleaning mode is terminated after the end of the first discharge mode. As described above, the control unit 24 may start the post-drainage cleaning mode at a predetermined timing when a predetermined amount of cleaning water is discharged after the start of the first discharge mode. Therefore, compared to the case where the first discharge mode and the post-drainage cleaning mode are started at the same time, it is possible to suppress the time required for discharging the cleaning water from the bowl portion 10 due to the water supply and drainage environment, etc., and to prevent it from becoming longer. It is possible to prevent filth and sewage from adhering and remaining on the bowl portion 10 after the discharge in the first discharge mode. If the post-discharge cleaning mode is started after the completion of the first discharge mode, the execution of the first discharge mode and the execution of the post-discharge cleaning mode can be prevented from overlapping.

As shown in FIGS. 3 and 9, at time t6, the control unit 24 starts the second discharge mode which starts after the start of the post-discharge cleaning mode and after the end of the first discharge mode. The second discharge mode can be started after the discharge and before the end of the cleaning mode. The second discharge mode allows the filth and sewage washed away by the cleaning mode after discharge to be discharged. The control unit 24 drives the discharge pump 20 from the time t6 to the time t7 by the second output. As shown by the arrow A6, as the discharge pump 20 is driven, the washing water is discharged to the drain trap pipeline 12, and the water level is lowered from the predetermined water level W4. The control unit 24 keeps the water supply device 4 driven from the time t6 to the time t7. Therefore, in the second discharge mode, as shown by the arrow A6, the washing water is also discharged while the water is supplied by the water supply device 4. That is, since the filth and sewage in the bowl portion 10 are continuously washed and discharged, the remaining filth in the bowl portion 10 can be suppressed more reliably. At time t7, when the discharge pump 20 which is the water level detecting means detects a water level of the predetermined water level W3 or less, the control unit 24 stops the drive of the discharge pump 20 and ends the second discharge mode. Since the discharge pump 20 can detect the predetermined water level W3, the residual water amount when the second discharge mode is terminated can be set to a relatively small residual water amount of the predetermined water level W3 or less. Therefore, the sewage and filth washed by the cleaning mode after discharge can be efficiently discharged. The control unit 24 stops the crushing device 18 from time t6 to time t7.

As shown in FIGS. 3 and 10, at time t7, the control unit 24 starts the cleaning reservoir formation mode for forming the reservoir required for the cleaning mode. The control unit 24 drives the water supply device 4 from time t7 to time t8, and stops the water supply device 4 at time t8. The control unit 24 stops the crushing device 18 and the discharge pump 20 from time t7 to time t8. As shown by the arrow A7, the water level of the washing water in the bowl portion 10 is raised to the position of the reservoir surface W1 with the water supply of the water supply device 4. At time t8, the water level detecting device 32 detects the water level of the pool surface W1, and the control unit 24 stops the water supply device 4. The water level in the bowl portion 10 can be set to the pool surface W1 in which the crushing mode is executed, and the inside of the bowl portion 10 including the crushing chamber 10d to which dirt easily adheres to crush the filth can be filled with the washing water.

As shown in FIGS. 3 and 11, at time t8, the control unit 24 starts a cleaning mode for re-cleaning the inside of the bowl unit 10. The area where filth and wash water were stored when the crushing mode was executed is washed again. The control unit 24 starts driving the crushing device 18 from time t8 and drives it from time t8 to time t9 for a set time. The control unit 24 stops the water supply device 4 from time t8 to time t9. The control unit 24 stops the discharge pump 20 from time t8 to time t9. As shown by the arrow A8, the control unit 24 drives the crushing device 18 to form a swirling flow in the bowl unit 10. Since the swirling flow in the bowl portion 10 cleans the cylindrical portion 10c, the crushing chamber 10d, the rotating body 26, and the like, sewage and filth adhering to these can be more reliably washed. The control unit 24 stops the crushing device 18 when the set time elapses and the time t9 is reached. In the cleaning reservoir formation mode and the cleaning mode, the cylindrical portion 10c, the crushing chamber 10d, the rotating body 26, and the like can be washed, and the sewage and filth adhering to these can be washed more reliably. Further, even if air lock occurs due to the biting of air from the discharge pump 20 in the first discharge mode and the second discharge mode, water is supplied in the cleaning reservoir formation mode and the inside of the bowl portion 10 is re-cleaned in the cleaning mode. Therefore, cleaning can be performed reliably.

As shown in FIGS. 3 and 12, at time t9, the control unit 24 drives the discharge pump 20 to start a third discharge mode for discharging the washing water used by the cleaning mode. The third discharge mode allows the filth and sewage washed away by the cleaning mode to be discharged. The control unit 24 drives the discharge pump 20 from the time t9 to the time t10 by the second output. As shown by the arrow A9, as the discharge pump 20 is driven, the washing water is discharged to the drain trap pipeline 12, and the water level is lowered from the predetermined water level W1. At time t10, when the discharge pump 20 which is the water level detecting means detects a water level of the predetermined water level W3 or less, the control unit 24 stops the drive of the discharge pump 20 and ends the third discharge mode. Since the discharge pump 20 can detect the predetermined water level W3, the residual water amount when the third discharge mode is terminated can be set to a relatively small residual water amount of the predetermined water level W3 or less. Therefore, the sewage and filth washed by the cleaning mode can be efficiently discharged. The control unit 24 stops the water supply device 4 and the crushing device 18 from time t9 to time t10.

As shown in FIGS. 3 and 13, at time t10, the control unit 24 starts a rewashing mode in which the bowl unit 10 is rewashed after the third discharge mode. The control unit 24 executes the rewashing mode for a set time from time t10 to time t11. The control unit 24 drives the water supply device 4 for a set time from time t10 to time t11. As shown by the arrow A10, the supplied washing water forms a swirling flow along the wall surface of the filth receiving surface 10b, the tubular portion 10c, and the crushing chamber 10d, and removes the filth and sewage adhering to the bowl portion 10. Rinse as if rinsing. Since the portable toilet device 1 is arranged in a living room or the like, even a slight amount of unwashed filth causes odor or discomfort. Therefore, further re-cleaning is performed so as to suppress the remaining cleaning of filth and sewage. The control unit 24 stops the crushing device 18 and the discharge pump 20 from time t10 to time t11. As shown by the arrow A11, the water level in the bowl portion 10 gradually rises to about the predetermined water level W4. When the water level in the bowl portion 10 rises above the predetermined water level W3, air escapes from the pump chamber 40 of the discharge pump 20, and the discharge pump 20 is in a state where it can be driven again without biting the air.

As shown in FIGS. 3 and 14, at time t11, the control unit 24 drives the discharge pump 20 to start the fourth discharge mode in which the wash water used by the rewash mode is discharged. The fourth discharge mode allows the filth and sewage washed away by the rewash mode to be discharged. The control unit 24 drives the discharge pump 20 from the time t11 to the time t12 by the second output. As shown by the arrow A12, as the discharge pump 20 is driven, the washing water is discharged to the drain trap pipeline 12, and the water level is lowered from the predetermined water level W4. The control unit 24 keeps the water supply device 4 driven from the time t11 to the time t12. Therefore, in the fourth discharge mode, as shown by the arrow A12, the washing water is also discharged while the water is supplied by the water supply device 4. That is, since the filth and sewage in the bowl portion 10 are continuously washed and discharged, the remaining filth in the bowl portion 10 can be suppressed more efficiently. At time t12, when the discharge pump 20 which is the water level detecting means detects a water level of the predetermined water level W3 or less, the control unit 24 drives and stops the discharge pump 20 to end the fourth discharge mode. Since the discharge pump 20 can detect the predetermined water level W3, the residual water amount when the fourth discharge mode is terminated can be set to a relatively small residual water amount of the predetermined water level W3 or less. Therefore, the sewage and filth washed by the cleaning mode after discharge can be efficiently discharged. The control unit 24 stops the crushing device 18 from the time t11 to the time t12.

As shown in FIGS. 3 and 15, at time t12, the control unit 24 starts the reservoir formation mode for forming the reservoir in the bowl portion 10. The control unit 24 drives the water supply device 4 from time t12 to time t13. The control unit 24 stops the crushing device 18 and the discharge pump 20 from time t12 to time t13. As shown by the arrow A13, the water level of the washing water in the bowl portion 10 is raised to the position of the reservoir surface W0 with the water supply of the water supply device 4. When the set time elapses and the time t13 arrives, the control unit 24 stops the water supply device 4 and ends the water supply. Since the water level in the bowl portion 10 is raised to the pool surface W0, the pool surface W0 in the filth receiving surface 10b can be formed relatively large, the dry surface of the filth receiving surface 10b is reduced, and the filth receives the filth. It is possible to prevent the surface 10b from adhering to the dry surface and becoming difficult to remove. When the water supply device 4 is stopped, the control unit 24 ends a series of cleaning operations and returns to the standby mode.

In the portable toilet device 1 according to the embodiment of the present invention described above, the control unit 24 starts the discharge mode (first discharge mode, post-discharge cleaning mode, and second discharge mode) after the start of the crushing mode. After the start of the discharge mode, the cleaning reservoir formation mode is started, and after the start of the cleaning reservoir formation mode, the post-cleaning discharge mode (third discharge mode, re-cleaning mode, and fourth discharge mode) is started. .. Therefore, even if the filth is scattered and adhered to the filth receiving surface 10b when the crushing mode is executed, the adhered filth can be washed and discharged. Therefore, it is possible to prevent the filth from remaining in the bowl portion 10.

Further, in the portable toilet device 1 according to the embodiment of the present invention described above, the control unit 24 starts the cleaning mode for driving the crushing device 18 after the start of the cleaning reservoir formation mode, and after the start of the cleaning mode. The post-cleaning discharge mode (first discharge mode, post-cleaning cleaning mode, and second discharge mode) is started. Therefore, the crushing device 18 can be driven in the cleaning mode to form a swirling flow in the pooled water of the bowl portion 19, and the inside of the bowl portion 10 can be cleaned by the swirling flow. Therefore, it is possible to further prevent the filth from remaining in the bowl portion 10.

Further, in the portable toilet device 1 according to the embodiment of the present invention described above, the filth adhering to the filth receiving surface 10b of the bowl portion 10 before the start of the crushing mode due to the pre-crushing cleaning mode started before the start of the crushing mode. Can be allowed to flow down into the pooled water, and filth can be efficiently crushed. Therefore, it is possible to further prevent the filth from remaining in the bowl portion 10.

Further, in the portable toilet device 1 according to the embodiment of the present invention described above, filth can be discharged more reliably by pressurizing the discharge pump 20. Further, normally, in the discharge pump 20, air lock may occur due to the suction of air, but the portable toilet device 1 is in the discharge mode (first discharge mode, post-discharge cleaning mode, and second discharge mode). In order to start the cleaning reservoir formation mode after the start and to start the post-cleaning discharge mode (first discharge mode, post-discharge cleaning mode, and second discharge mode) after the start of the cleaning pool formation mode. Even if the discharge pump is air-locked during the execution of the discharge mode, it is possible to prevent the filth from remaining in the bowl portion 10.

1 Portable toilet device 1a Wheel 2 Toilet bowl body 4 Water supply device 6 Frame 6a Frame base 8 Water supply pipe 10 Bowl part 10a Spout 10b Sewage receiving surface 10c Cylindrical part 10d Crushing chamber 10e Rim part 10f Inclined surface 12 Drain trap pipeline 12a Connection Part 12b Rising part 12d Top 12f Downing part 12g Lateral part 16 Drainage line 16a Pipeline part 18 Crushing device 20 Drainage pump 24 Control part 26 Rotating body 28 Rotating shaft 30 Electric motor 32 Water level detection device 34 Vent valve Pipeline 36 Vent valve 38 Filter 40 Pump chamber 42 Impeller 44 Rotating shaft 46 Electric motor 48 holes

Claims (4)

A toilet bowl device that crushes and discharges filth.
A bowl portion having a sewage receiving surface on which a sewage collecting surface of the stored water is formed and receiving sewage,
A water supply device that supplies water to the bowl and
A crusher that crushes filth in the bowl and
The discharge channel that communicates with the bowl and
A discharge device that discharges the water in the bowl to the downstream side,
A control unit that controls the crushing device and the discharging device is provided.
The control unit
A crushing mode that drives the crushing device to crush filth in the bowl,
A post-crushing discharge mode in which the discharge device is driven to discharge the filth crushed by the crush mode together with the washing water in the bowl portion.
A cleaning reservoir formation mode that forms a reservoir while cleaning the bowl with the wash water supplied by the water supply device.
It is configured to be able to execute the post-cleaning discharge mode in which the drainage device is driven and the pooled water in the bowl portion formed by the cleaning reservoir formation mode is discharged.
In the crushing mode, the control unit crushes filth in the bowl portion in a state where the water level of the pool surface is lower than the water level of the pool surface in the standby state before the start of the washing operation.
The control unit starts the post- crushing discharge mode after the start of the crushing mode, starts the cleaning reservoir formation mode after the start of the discharge mode, and after the start of the cleaning reservoir formation mode. A toilet bowl device that starts the discharge mode after cleaning. The toilet bowl according to claim 1, wherein the control unit starts the cleaning mode for driving the crushing device after the start of the cleaning reservoir formation mode, and starts the post-cleaning discharge mode after the start of the cleaning mode. Device. The toilet bowl device according to claim 1 or 2, wherein the control unit starts a pre-crushing cleaning mode in which the bowl portion is washed with the washing water supplied by the water supply device before the start of the grinding mode. .. The toilet device according to any one of claims 1 to 3, wherein the discharge device is a discharge pump.

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