JP5724803B2 - Flush toilet equipment - Google Patents

Description

  The present invention relates to a flush toilet apparatus that temporarily receives filth and discharges it together with wash water.

  As a flush toilet apparatus that receives filth temporarily and discharges it together with washing water, the one described in Patent Document 1 below has been proposed. As shown in FIG. 1 of the following patent document, the flush toilet apparatus described in the following patent document 1 has a bowl portion having a waste receiving surface for temporarily receiving the waste, and an upper peripheral edge portion of the bowl portion. A rim portion formed in the rim portion, a cleaning water supply means such as a water storage tank for supplying cleaning water from the rim portion to the bowl portion, an inlet portion connected below the bowl portion, and an upper portion extending from the inlet portion. And a descending pipeline formed so as to extend downward from the end of the ascending pipeline, and when not in use, stores water from the inlet to at least a part of the ascending pipeline, None, and a drain trap line that forms sealed water by at least a part of the accumulated water.

JP 2010-31551 A

  The conventional flush toilet apparatus described in the above-mentioned Patent Document 1 efficiently discharges filth by reducing the time required for washing water to be pushed into the drain trap pipe and the time required for siphon action as water saving is achieved. In view of the importance of. Specifically, attention is focused on how to form a flow of cleaning water other than the swirling flow that pushes floating filth into the stored water in the bowl portion and guides it to the drain trap side while suppressing the amount of water. And the new flush toilet apparatus is proposed for the purpose of providing the flush toilet apparatus which can discharge | emit reliably, without leaving floating-type waste on the water surface of a bowl part.

  As described above, in order to meet the demand for water saving, various devices have been devised for supplying the cleaning water to the bowl portion and handling the cleaning water in the bowl portion. However, since the reservoir water is formed from the lower part of the bowl part to the drain trap pipe to form the sealed water, the water saving side face has not been sufficiently tackled. In order to respond to the demand for stronger water saving, not only a device on the cleaning surface of the bowl part but also a device on the water saving surface in the drain trap pipe is required.

  Therefore, the present inventors temporarily retract the water stored in order to form the sealed water in the bowl part and the drain trap pipe as retracted water, and use the retracted water that was retracted when cleaning the filth. Focused on doing. Furthermore, in the flush toilet apparatus that uses the retracted water that was retracted during the cleaning of the filth, if the filth is to be surely discharged in each wash using the stored water, We also paid attention to the fact that the timing of supplying the washing water and the timing of returning the stored water from the storage tank will be based on a predetermined sequence. If the mechanism for cleaning using the stored water is to be operated based on a predetermined sequence in this way, valves or pumps driven by electric power are adopted, and these valves are controlled by a control device (CPU ) To be electrically controlled. As a matter of course, these valves cannot be driven when there is no power supply such as a power outage or forgetting to plug in the outlet, so if the user uses the stool during the non-energization, the electric valve cannot be opened. Therefore, there is a problem that cleaning water cannot be supplied to the toilet and cleaning cannot be performed.

  The present invention has been made in view of such problems, and its purpose is to improve the water-saving performance by devising the handling of the stored water in the drain trap pipe, and to assist using the stored water when not energized. An object of the present invention is to provide a flush toilet apparatus capable of reliably discharging filth without being subjected to water.

  In order to solve the above-mentioned problems, the present invention is a flush toilet apparatus for discharging filth as washing water together with rinsing water, a bowl portion for storing filth and washing water, and a rim portion provided on the upper portion of the bowl portion. A toilet trap body connected to the downstream side of the bowl portion and forming a sealed water together with the bowl portion by the stored water that is the wash water to be stored, and the wash water from the rim portion toward the bowl portion Rim cleaning water supply means for supplying water, a storage tank for temporarily storing a part of the stored water, and a part of the stored water from the bowl part or drain trap pipe to the storage tank driven by power supply Pull-in means for drawing in water, and return means that is driven by the supply of electric power to return the water stored in the storage tank to the bowl part or the drain trap pipe, from the bowl part or the drain trap pipe Accumulated water It is a control means for controlling the rinsing water use cleaning means that draws in and uses a part of it for discharging sewage, and the rim cleaning water supply means, the drawing means, and the feedback means. Driving the drawing-in means from a state where the water stored above the predetermined water level is stored in the head and the drain trap pipe, and then starting the supply of the cleaning water by driving the rim cleaning water supply means. Control means for executing a stored water use cleaning mode for driving the feedback means before the supply is completed, the rim cleaning water supply means, a supply flow path for supplying cleaning water to the rim portion, and electric power And an electric on-off valve that opens and closes the supply flow path by driving and a manual on-off valve that opens and closes the supply flow path by a user's manual operation.

  The flush toilet apparatus according to the present invention includes a drain trap pipe, and the drain trap pipe is connected below the bowl portion. And when the drain trap pipe is not in use, the water is stored to form a stored water, and at least a part of the stored water forms a sealed water. The sealed water formed in the bowl part and the drain trap pipe plays a role of preventing odor from the sewage pipe from entering the toilet room and preventing insects from entering the toilet room. In order to reliably fulfill this role, the sealing depth of the sealing water formed in the bowl portion and the drain trap pipe is set so that the sealing water does not run out due to evaporation of stored water forming the sealing water.

  On the other hand, when attention is paid to the use of the flush toilet device, the filth temporarily received by the bowl part falls below the bowl part and is temporarily stored in the drain trap pipe inlet. In this state, cleaning water is supplied by the cleaning water supply means, and the filth flows through the drain trap pipe to the sewer pipe side. Therefore, a part of the stored water that forms the sealing water in the bowl portion and the drain trap pipe is used for preventing the sealing water from being cut off when not in use. On the other hand, the filth received by the bowl during use is temporarily stored near the entrance of the drain trap pipe, and then washed away by the wash water. In the discharge of this filth, the reservoir water on the upstream side (bowl side) from the periphery of the filth and the cleaning water supplied by the cleaning water supply means contribute, so that the sewage in the drain trap pipe is located downstream from the filth periphery. Water does not necessarily contribute to the discharge of filth. If attention is paid to the characteristics of the bowl part of the flush toilet device and the drain trap pipe in use and non-use as described above, the stored water for forming the sealed water is the same in use and non-use. It is not always necessary to store them in the storage space, and there is room for devising how to store them when they are used and when they are not used.

  Therefore, in the present invention, there is provided a stored water utilization mechanism that draws a part of the stored water as drawn water from the bowl part or drain trap pipe and returns the drawn water to the bowl part or drain trap pipe. By this stored water utilization mechanism, when the bowl portion temporarily receives the filth, and then drains it together with the cleaning water, the return means is driven after the drawing means is driven. Therefore, when not in use, the retained water is retained with a certain margin so as to form a sealed water with certainty. However, when flowing filth, the retracting means is driven first to draw in the unreserved water. And store it in a temporary storage tank. The return means returns the drawn water to the bowl portion or the drain trap pipe, so that the drawn water can contribute to the conveyance of the filth.

  Further, the present invention has a control means for controlling the behavior of the drawing means and the feedback means, and the control means can execute the stored water use cleaning mode. As used herein, the stored water cleaning mode refers to a normal cleaning mode that is executed when a control unit receives a predetermined electrical signal such as an electrical signal transmitted by a user's remote control operation.

  And according to this invention, the following effects can be implement | achieved collectively. That is, considering the aspect of electricity or electric power, in the flush toilet apparatus equipped with the stored water use washing means as in the present invention, if the washing water is supplied only by the element driven by electricity, Or when it is not possible to receive power supply such as forgetting to insert the outlet (when power is not supplied). In other words, it has been a problem that the toilet body cannot be cleaned and filth cannot be discharged because the user cannot supply cleaning water after the user uses the stool during non-energization.

  In this regard, the flush toilet apparatus according to the present invention includes a manual on-off valve that can be opened and closed by a user's manual operation. By opening the manual on-off valve, wash water is supplied to the rim portion. It is configured. For this reason, it is possible to supply cleaning water from the supply flow path to the rim portion even when no power is supplied. Since the rim part is provided at the upper part of the bowl part, the washing water supplied from the rim part drops the bowl part while washing the bowl part, and discharges the filth in the bowl part. As a result, even if the user uses the stool at the time of de-energization, the toilet body can be cleaned and the filth can be discharged.

  Further, the flush toilet apparatus as described above includes a bypass channel that branches from the supply channel upstream of the electric on-off valve and merges with the supply channel downstream of the electric on-off valve. It is preferable that the on-off valve is provided in the bypass channel. According to such a flush toilet apparatus, it is possible to supply washing water to the rim portion by a user's manual operation at the time of de-energization while having a compact and simple configuration.

  Furthermore, in the flush toilet device, the manual on-off valve is opened by the user's operation and starts passing water, and continues to open until a predetermined amount of washing water is passed regardless of the user's operation, The predetermined amount is preferably set larger than the amount of cleaning water supplied by the rim cleaning water supply means in the stored water cleaning mode.

  According to such a flush toilet device, the supply amount (total flow rate) of cleaning water supplied from the rim portion when not energized is greater than the amount supplied in the stored water cleaning mode. By cleaning the bowl while maintaining the open state, it is possible to discharge the filth even if the user uses the stool when the power is off. That is, it is possible to realize a flush toilet apparatus that can reliably discharge filth without receiving assistance using stored water when de-energized.

  According to the present invention, it is possible to improve the water-saving performance by devising the handling of stored water in the drain trap pipe, and to reliably discharge filth without receiving assistance using the stored water when not energized. A flush toilet apparatus can be provided.

It is a perspective view which shows typically the flush toilet apparatus which concerns on embodiment of this invention. It is sectional drawing which shows typically the flush toilet concerning embodiment of this invention. It is the figure which expanded the drawing pump vicinity shown in FIG. It is a block block diagram which shows the control structure of the flush toilet apparatus which concerns on embodiment of this invention. It is a flowchart which shows the operation | movement in the normal washing mode of the flush toilet apparatus which concerns on embodiment of this invention. It is typical sectional drawing for demonstrating operation | movement in the normal washing mode of the flush toilet apparatus shown to FIG. 1 and FIG. It is typical sectional drawing for demonstrating operation | movement in the normal washing mode of the flush toilet apparatus shown to FIG. 1 and FIG. It is typical sectional drawing for demonstrating operation | movement in the normal washing mode of the flush toilet apparatus shown to FIG. 1 and FIG. It is typical sectional drawing for demonstrating operation | movement in the normal washing mode of the flush toilet apparatus shown to FIG. 1 and FIG. It is typical sectional drawing for demonstrating operation | movement in the normal washing mode of the flush toilet apparatus shown to FIG. 1 and FIG. It is typical sectional drawing for demonstrating operation | movement in the normal washing mode of the flush toilet apparatus shown to FIG. 1 and FIG. It is typical sectional drawing for demonstrating operation | movement in the normal washing mode of the flush toilet apparatus shown to FIG. 1 and FIG. It is typical sectional drawing for demonstrating operation | movement in the normal washing mode of the flush toilet apparatus shown to FIG. 1 and FIG. It is typical sectional drawing for demonstrating operation | movement in the normal washing mode of the flush toilet apparatus shown to FIG. 1 and FIG. It is typical sectional drawing for demonstrating operation | movement in the normal washing mode of the flush toilet apparatus shown to FIG. 1 and FIG. It is a timing chart which shows the operation | movement in the normal washing mode of the flush toilet apparatus which concerns on embodiment of this invention. It is typical sectional drawing for demonstrating operation | movement in the normal washing mode of the flush toilet apparatus shown to FIG. 1 and FIG. It is typical sectional drawing for demonstrating operation | movement in the preparatory washing | cleaning mode of the flush toilet apparatus shown to FIG. 1 and FIG. It is a figure which shows the structural example of the rim washing water supply means in other embodiment of this invention. It is a figure which shows the structural example of the rim washing water supply means in other embodiment of this invention. It is a figure which shows the structural example of the rim cleaning water supply means in other embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  A flush toilet apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic perspective view showing a flush toilet apparatus CSd according to an embodiment of the present invention. FIG. 2 is a cross-sectional view schematically showing a flush toilet apparatus CSd according to an embodiment of the present invention. The flush toilet apparatus CSd shown in FIG. 2 mainly draws the toilet body 10d, and the toilet seat, toilet lid, flush water supply valve, remote controller, and its operation panel are not shown.

  As shown in FIG. 1, the flush toilet apparatus CSd includes a toilet body 10d and a sanitary washing apparatus 70d. The sanitary cleaning device 70d is configured to be able to discharge cleaning water for cleaning the user's local portion from the cleaning nozzle 701d.

  As shown in FIG. 2, the toilet main body 10d constitutes a flush toilet that temporarily receives filth and discharges it together with wash water, and includes a bowl portion 20d, a drain trap conduit 40d, and a temporary storage tank. 50d. The bowl portion 20d is a part of the toilet main body 10d, and includes a filth receiving surface 201d for temporarily receiving the filth, a rim portion 202d for flowing cleaning water to the filth receiving surface 201d, and the filth being a drain trap pipe. A bowl outlet 203d for flowing into the passage 40d. The rim 202d is formed on the upper peripheral edge of the filth receiving surface 201d. A cleaning water supply hole 30d faces the rim portion 202d. The bowl outlet 203d is formed below the filth receiving surface 201d.

  The drain trap pipe 40d is a part that receives filth and washing water from the bowl part 20d and flows in the direction of the sewer pipe. The drain trap pipe 40d has an inlet 401d, a rising pipe 402d, and a down pipe 403d. The inlet portion 401d is a portion connected to a bowl outlet portion 203d formed below the filth receiving surface 201d of the bowl portion 20d. The inlet portion 401d receives filth and washing water from the bowl outlet portion 203d and flows it into the ascending pipeline 402d.

  The ascending pipeline 402d is a portion formed on the downstream side of the inlet portion 401d, and is a portion formed so as to extend upward from the inlet portion 401d. Therefore, the bowl outlet portion 203d, the inlet portion 401d, and the rising conduit 402d are connected to form a U-shaped conduit as a whole.

  The descending pipeline 403d is a portion formed on the downstream side of the ascending pipeline 402d, and is a portion formed so as to extend downward from the downstream end of the ascending pipeline 402d. Accordingly, the stored water WS stored in the U-shaped pipe formed by the bowl outlet part 203d, the inlet part 401d, and the rising pipe line 402d is connected to the rising pipe line 402d and the lower pipe line 403d. Can be accumulated. When the flush toilet apparatus CSd is not used, water is stored from the inlet 401d to at least a part of the ascending pipeline 402d to form the stored water WS, and the sealed water is formed by at least a part of the stored water WS. .

  The temporary storage tank 50d is a tank for drawing a part of the stored water WS from the drain trap pipe 40d and temporarily storing it as drawn water. The drain trap pipe 40d and the temporary storage tank 50d are connected by a lead-in pipe line 503d (first lead-in part), a bent part 508d (topmost part), and a lead-in pipe line 507d (second lead-in part).

  The lead-in conduit 503d is a portion connected to the drain trap conduit 40d. The lead-in conduit 503d extends while inclining upward from a portion connected to the drain trap conduit 40d. A bent portion 508d is connected to the drawing conduit 503d, and the bent portion 508d is connected to the drawing conduit 507d. The lead-in conduit 507d extends while being inclined downward from the portion connected to the bent portion 508d, and is connected to the upper end of the temporary storage tank 50d. A vent 50da is formed at an upper end of the temporary storage tank 50d so as to be separated from a portion connected to the lead-in conduit 507d.

  A drawing pump 505d is provided in the drawing line 503d. The drawing pump 505d is a turbo pump. An enlarged cross-sectional view of the drawing pump 505d is shown in FIG. As shown in FIG. 3, the drawing pump 505d has a motor 505da and an impeller 505db. As the motor 505da rotates, the impeller 505db rotates, sucking up water around the impeller 505db and feeding it to the motor 505da side. Therefore, the drawing pump 505d is configured not to suck up water when there is no water around the impeller 505db.

  Returning to FIG. 2, the description will be continued. The drawn-in water stored in the temporary storage tank 50d can be returned to the drain trap pipe 40d. The temporary storage tank 50d and the drain trap line 40d are connected by a return line 509d, a return line 510d (first return part), a return line 511d (second return part), and a return line 504d.

  The return conduit 509d is a portion connected to the temporary storage tank 50d. The return conduit 509d extends in a substantially horizontal direction from the lower end of the temporary storage tank 50d. The return line 510d is connected to the return line 509d. The return line 510d extends so as to rise in a substantially vertical direction from a portion connected to the return line 509d. A return line 511d is connected to the return line 510d. The return line 511d extends while descending obliquely downward from the portion connected to the return line 510d. A return line 504d is connected to the return line 511d. The return conduit 504d is bent from a portion connected to the return conduit 511d and connected to the inlet 401d of the drain trap conduit 40d.

  A feedback pump 506d is provided between the return line 509d and the return line 510d. By driving the return pump 506d, the drawn water in the temporary storage tank 50d is returned to the drain trap pipe 40d.

  Next, a control configuration of the flush toilet apparatus CSd will be described with reference to FIG. FIG. 4 is a block diagram showing a control configuration of the flush toilet apparatus CSd. As shown in FIG. 4, the flush toilet apparatus CSd includes a control device 80 (control means), a temporary storage tank water level detection means 801, a trap water level detection sensor 802, a seating detection sensor 803, and a human body approach detection. Sensor 804, trap trap detection sensor 805, temperature detection sensor 806, remote controller 807, retractable pump motor 808, feedback pump motor 809, toilet seat / toilet lid opening / closing means 810, measuring means 811, lamp A speaker 812, an electric on-off valve (EV) 813, and a sanitary washing device 70d are provided, and a manual on-off valve (HV) 814 and a supply flow path 91 are further provided (see FIG. 6 and the like).

  The water level detection means 801 in the temporary storage tank, the water level detection sensor 802 in the trap, the seating detection sensor 803, the human body approaching detection sensor 804, the filth detection sensor 805 in the trap, the temperature detection sensor 806, and the remote controller 807 have predetermined measurement signals and An instruction signal is output to the control device 80.

  The control device 80 exchanges predetermined measurement signals and control instruction signals with the retracting pump motor 808, the return pump motor 809, the toilet seat / toilet lid opening / closing means 810, and the measuring means 811. The control device 80 outputs predetermined control signals to the lamp / speaker 812, the electric on-off valve 813, and the sanitary washing device 70d. As will be described in detail later, the control device 80 controls the operation of the electric on-off valve 813, the pull-in pump motor 808, and the feedback pump motor 809, thereby using the stored water cleaning mode (hereinafter referred to as the normal cleaning mode in this specification). Two cleaning modes can be executed.

  Next, referring to FIGS. 5, 6, 7, 8, 9, 10, 11, 11, 12, 13, 14, 15, and 16, the flush toilet in the normal washing mode The operation of the device CSd will be described. FIG. 5 is a flowchart showing the operation of the flush toilet apparatus CSd in the normal washing mode.

  The normal washing mode (washed water using washing mode) is started when the human body approach detection sensor 804 detects that the user has approached the flush toilet apparatus CSd (step S01). Until the human body approach detection sensor 804 detects the user, the flush toilet apparatus CSd is in a standby state.

  In the standby state, as shown in FIG. 6, the accumulated water WS is accumulated up to the vicinity of the upper end of the rising conduit 402d of the drain trap conduit 40d. In the present embodiment, the uppermost part of the return pipe, which is the part where the return pipe 510d and the return pipe 511d are connected to each other, rather than the lower end position α of the flow path cross section at the top of the rising pipe 402d. The flow path cross-section lower end position β at the top is configured to be a high position. Further, the lower end position of the flow path cross section in the bent portion 508d that is the topmost part of the lead-in pipe line, rather than the lower end position β of the flow path cross section in the top part of the return pipe that is the part where the return pipe line 510d and the return pipe line 511d are connected It is comprised so that (gamma) may become a high position. In the standby state shown in FIG. 6, part of the stored water WS also flows into the return pipe 511d and enters the same height as the stored water in the drain trap pipe 40d. The normal cleaning mode is executed in a state where the water level of the stored water WS is equal to or higher than the position where the stored water WS can be drawn by the drawing pump 505d.

  When the human body approach detection sensor 804 detects that the user has approached the flush toilet apparatus CSd, a predetermined electrical signal is transmitted from the human body approach detection sensor 804 to the control device 80 (step S01). When the control device 80 receives such an electric signal, the control device 80 starts measuring time by the internal timer A (step S02).

  In step S03 following step S02, control device 80 outputs a drawing instruction signal to drawing pump 505d. The drawing pump 505d draws a part of the stored water WS from the drain trap pipe 40d to the temporary storage tank 50d (time t5). This state is shown in FIGS.

  As shown in FIG. 7, the drawing pump 505d is driven to draw water from the stored water WS and supply it to the temporary storage tank 50d as drawn water. The water drawn into the temporary storage tank 50d flows into the return pipe 509d. Since the return pipe 510d rises with respect to the return pipe 509d, the drawn-in water and the stored water are cut off by the air contained in the return pipe 510d.

  Subsequently, as shown in FIG. 8, the water level of the stored water WS is lowered, and it becomes impossible to draw water even if the drawing pump 505d is driven. In addition, even if the drawing pump 505d draws a part of the stored water WS, the stored water WS is maintained at a constant level so that the down line 403d and the bowl portion 20d side do not pass through. Since the vent 50da is formed in the temporary storage tank 50d, when the driving of the drawing pump 505d is stopped (time t6), the water drawn into the drawing line 503d returns to the drain trap line 40d. (See FIG. 9). The state shown in FIG. 9 is a stage where preparations for receiving filth are completed.

  In step S04 following step S03, the control device 80 outputs a toilet lid opening instruction signal to the toilet seat / toilet lid opening / closing means 810. The toilet seat / toilet lid opening / closing means 810 opens the toilet lid.

  In step S05 following step S04, it is determined whether or not the discharge of filth has been instructed by the operation of the remote controller 807. If the discharge of filth is instructed, the process proceeds to step S06, and if the discharge of filth is not instructed, the process proceeds to step S07.

  If the discharge of filth is instructed by the operation of the remote controller 807, the filth is excreted in the bowl portion 20d. This state is shown in FIG. As shown in FIG. 10, the excreted waste MB enters the accumulated water WS.

  Returning to FIG. 5, in step S <b> 06, the control device 80 outputs a cleaning instruction signal to the electric on-off valve 813. When the electric on-off valve 813 receives the cleaning instruction signal, the electric on-off valve 813 operates so that the cleaning water flows into the cleaning water supply hole 30d by pulling the valve body provided therein away from the valve seat (time t7). This state is shown in FIG. As shown in FIG. 11, the cleaning water is supplied from the cleaning water supply hole 30d into the bowl portion 20d. The cleaning water supplied from the cleaning water supply hole 30d flows through the rim portion 202d and into the filth receiving surface 201d. The washing water that has washed the filth receiving surface 201d flows from the bowl outlet 203d into the drain trap pipe 40d. The filth MB flows toward the ascending pipeline 402d.

  Returning to FIG. 5, in step S <b> 07, it is determined whether the detection signal is continuously output from the human body approach detection sensor 804. If the detection signal is continuously output from the human body approach detection sensor 804, the process returns to step S05. If the detection signal is not continuously output from the human body approach detection sensor 804, the process proceeds to step S08.

  In step S08, it is determined whether the time measured by the timer A has reached the specified time a1. If the time measured by the timer A has not reached the specified time a1, the process returns to step S05. If the time measured by the timer A has reached the specified time a1, the process proceeds to step S06.

  In step S09 following step S06, control device 80 starts measuring time by internal timer B.

  In step S10 following step S09, it is determined whether the time measured by the timer B has reached the specified time b1. If the time measured by the timer B has not reached the specified time b1, the process of step S10 is continued. If the time measured by the timer B has reached the specified time b1, the process proceeds to step S11.

  In step S11, the water drawn into the temporary storage tank 50d is returned to the bowl portion 20d and the drain trap conduit 40d side. Specifically, a return instruction signal for returning the water drawn into the temporary storage tank 50d to the drain trap pipe 40d is output from the control device 80 to the feedback pump 506d. When the return pump 506d receives the return instruction signal, it returns the drawn-in water to the drain trap pipe 40d (time t8). This state is shown in FIG. 12, FIG. 13, FIG. 14, and FIG.

  As shown in FIG. 12, in step S11, the feedback pump 506d is driven to feed the drawn water in the temporary storage tank 50d toward the drain trap pipe 40d. When the return pump 506d is driven in this way, the water that is first connected to the stored water WS and enters the return line 511d is returned to the drain trap line 40d.

  When the drive of the feedback pump 506d is further continued from the state shown in FIG. 12, the air that has separated the accumulated water and the drawn-in water is blown into the drain trap pipe 40d as shown in FIG. Finally, the drawn-in water is sequentially returned to the drain trap conduit 40d (see FIG. 14), and finally the drawn-in water is completely returned to the drain trap conduit 40d until air is ejected (see FIG. 15). Thereafter, the drive of the feedback pump 506d is stopped (time t9).

  After the drive of the feedback pump 506d is stopped, the control device 80 outputs a cleaning stop signal to the electric on-off valve 813. When the electric on-off valve 813 receives the washing stop signal, the electric opening / closing valve 813 operates to return the valve body provided therein to the valve seat and stop the supply of the washing water. (Time t10).

  Returning to FIG. 5, in step S12 following step S11, the counts of timer A and timer B are reset.

  Refer to FIG. 16 for the supply timing of the wash water supplied from the wash water supply hole 30d and the supply timing of the drawn water returned after being drawn into the temporary storage tank 50d in the operation of the flush toilet apparatus CSd described above. While explaining. FIG. 16 is a timing chart showing the operation of the flush toilet apparatus CSd.

  As shown in FIG. 16, in the flush toilet apparatus CSd, the electric on-off valve 813 is opened at time t7 to supply cleaning water to the bowl portion 20d, and the supply is stopped at time t10 (step S06 in FIG. 5). ). Further, the water drawn in from the temporary storage tank 50d is returned from time t8 to time t9 (step S11 in FIG. 5). In this way, it is preferable to return the drawn-in water from the temporary storage tank 50d between the start of the supply of the cleaning water to the bowl portion 20d and the end of the supply, but the return timing of the drawn-in water in the normal cleaning mode is the same. It is not limited.

  As described above, the flush toilet apparatus CSd according to the present embodiment is a flush toilet apparatus that temporarily receives filth and discharges it together with wash water, and has a filth receiving surface 201d for temporarily receiving filth. Bowl portion 20d, rim portion 202d formed at the upper peripheral edge of bowl portion 20d, and washing water supply means for supplying washing water from rim portion 202d to bowl portion 20d (electric on-off valve 813, washing water supply hole 30d) An inlet portion 401d connected to the lower portion of the bowl portion 20d, a rising conduit 402d formed to extend upward from the inlet portion 401d, and a lowering formed to extend downward from the end of the rising conduit 402d. It has a pipe line 403d, and when not in use, it stores water from the inlet 401d to at least a part of the ascending pipe line 402d to form the stored water WS. At least a part of the drain trap pipe 40d that forms a sealed water, and a part of the stored water WS is drawn from the bowl part 20d or the drain trap pipe 40d as drawn water, and the drawn-in water is drawn into the bowl part 20d or the drainage. A stored water utilization mechanism for returning to the trap line 40d.

  The stored water utilization mechanism includes a temporary storage tank 50d for temporarily storing drawn water, and a suction pump 505d for drawing a part of the stored water WS as drawn water from the bowl portion 20d or the drain trap conduit 40d to the temporary storage tank 50d. Drawing-in means), a return pump 506d (feedback means) for returning the drawn-in water temporarily stored in the temporary storage tank 50d to the bowl portion 20d or the drain trap conduit 40d, a drawing pump 505d (drawing means), and a feedback pump And a control device 80 (control means) for controlling the behavior of 506d (feedback means).

  The control device 80 (control means) is a cleaning mode that is executed when the control device 80 (control means) receives a predetermined electrical signal, and in the state where the water level of the stored water WS is equal to or higher than the predetermined water level. After driving 505d (drawing means), the supply of cleaning water by driving the cleaning water supply means and the feedback pump 506d (feedback) before the end of the supply of cleaning water by the cleaning water supply means And the cleaning water supply means without driving the drawing pump 505d (drawing means), thereby storing from the inlet portion 401d to at least a part of the ascending pipeline 402d. The preparatory cleaning mode in which the stored water WS is replaced with the supplied cleaning water, and the cleaning water is supplied so that the water level of the stored water is equal to or higher than the predetermined water level. A possible line, further, when it is detected that the washing power of the flush toilet device CSd is started, then, before the first run the normal cleaning mode, to execute the prepared cleaning mode.

  The flush toilet apparatus CSd according to the present embodiment includes a drain trap pipe 40d, and the drain trap pipe 40d extends upward from the inlet 401d connected to the lower part of the bowl 20d and the inlet 401d. And a descending pipeline 403d formed to extend downward from the end of the ascending pipeline 402d. When not in use, water is stored from the inlet 401d to at least a part of the ascending pipeline 402d to form the stored water WS, and sealed water is formed by at least a part of the stored water WS. The sealed water formed in the bowl portion 20d and the drain trap pipe 40d plays a role of preventing odors from the sewage pipe from entering the toilet room and preventing insects from entering the toilet room. Yes. In order to reliably fulfill the role, the sealing depth of the sealing water formed in the bowl portion 20d and the drain trap pipe 40d is set so that the sealing water does not run out due to evaporation of the accumulated water forming the sealing water. .

  On the other hand, paying attention to the use of the flush toilet, the filth MB temporarily received by the bowl portion 20d falls below the bowl portion 20d and is temporarily stored in the drain trap pipe 40d inlet. In this state, cleaning water is supplied by the cleaning water supply means, and the waste MB flows through the drain trap pipe 40d to the sewer pipe side. Accordingly, a part of the stored water WS that forms the sealed water in the bowl portion 20d and the drain trap pipe 40d is used for preventing the sealed water from being cut off when not in use.

  On the other hand, the filth MB received by the bowl portion 20d during use is temporarily stored near the inlet of the drain trap pipe 40d, and then washed away by washing water. In the discharge of the filth MB, the water stored in the upstream side (bowl portion 20d side) from the periphery of the filth and the cleaning water supplied by the cleaning water supply means contribute to the downstream side from the filth periphery of the drain trap pipe 40d. The accumulated water in the area does not necessarily contribute to the discharge of filth MB. If attention is paid to the characteristics of the bowl part 20d and the drain trap pipe 40d of the flush toilet apparatus CSd during use and non-use as described above, the stored water for forming the sealed water is used or not used. However, it is not always necessary to store them in the same way, and there is room for devising how to store them when they are used and when they are not used.

  Therefore, in the embodiment, a stored water utilization mechanism that draws part of the stored water WS as drawn water from the bowl portion 20d or the drain trap conduit 40d and returns the drawn water to the bowl portion 20d or the drain trap conduit 40d. I have. With this stored water utilization mechanism, when the bowl portion 20d temporarily receives the filth, and then drains it together with the cleaning water, the return pump 506d is driven after the drawing pump 505d is driven. Accordingly, when not in use, the retained water WS is retained with a certain margin so as to surely form a sealed water. However, when flowing filth, the drawn water is not affected by the filth by driving the suction pump 505d first. Is stored in the temporary storage tank 50d as drawn water. Since the return pump 506d returns the drawn water to the bowl portion 20d or the drain trap pipe 40d, the drawn water can contribute to the conveyance of the filth.

  Furthermore, in this embodiment, it has the control apparatus 80 which controls the behavior of the drawing pump 505d and the return pump 506d, and the control apparatus 80 can perform two washing modes, a normal washing mode and a preparatory washing mode.

  The normal cleaning mode (cleaning mode using stored water) is a normal cleaning mode that is executed when the control device 80 receives a predetermined electrical signal, such as an electrical signal transmitted by a user's remote control operation. In the normal cleaning mode, cleaning is performed by driving the cleaning water supply means (the electric on-off valve 813 and the cleaning water supply hole 30d) after driving the drawing pump 505d in a state where the water level of the stored water WS is equal to or higher than a predetermined water level. The supply of water and the driving of the feedback pump 506d before the end of the supply of the cleaning water by the cleaning water supply means are performed. The predetermined water level is a level at which the stored water WS can be drawn by the drawing pump 505d.

  The preparatory cleaning mode is a cleaning mode that is executed when the control device 80 detects that energization of the flush toilet apparatus CSd is started before the normal cleaning mode is executed. In the preparatory cleaning mode, the cleaning water supply means is driven without driving the drawing pump 505d, so that the stored water WS stored from the inlet portion 401d to at least a part of the ascending pipeline 402d is supplied. The water is replaced with water, and the cleaning water is supplied so that the water level of the stored water WS is equal to or higher than a predetermined water level.

  In the present embodiment, when the control device 80 detects that the energization of the flush toilet device CSd is started, the control device 80 then executes the preparatory cleaning mode before executing the normal cleaning mode for the first time. Thereby, even if it is a case where the water level of the stored water WS has fallen, a wash water is supplied and the water level of the stored water WS rises, without causing a broken state by driving the drawing pump 505d. Further, even if the stored water WS is contaminated with filth, the contaminated stored water WS is replaced by the supplied wash water without being drawn into the temporary storage tank 50d.

  By executing the preparatory cleaning mode, immediately before the normal cleaning mode is performed, the accumulated water WS is always equal to or higher than a predetermined water level, that is, equal to or higher than a water level at which the stored water WS can be drawn by the suction pump 505d. It is not contaminated. For this reason, even if the normal cleaning mode is executed, a broken state does not occur in the drain trap pipe 40d, and the temporary storage tank 50d does not become unsanitary.

  Further, the amount of cleaning water supplied from the cleaning water supply means in the preparatory cleaning mode is larger than the amount of cleaning water supplied from the cleaning water supply means in the normal cleaning mode.

  In the preparatory cleaning mode, the cleaning water supply means is driven without driving the drawing pump 505d. For this reason, even if the feedback pump 506d is driven in the preparatory cleaning mode, there is a high possibility that a sufficient amount of drawn water cannot be returned.

  The flush toilet apparatus CSd makes it possible to convey filth while returning a small amount of washing water supplied from the washing water supply means by returning the drawn-in water during conveyance of the filth. For this reason, when the preparatory cleaning mode is performed in a state where filth is present in the stored water WS, a sufficient amount of drawn-in water cannot be returned, so the filth is not conveyed, and the preparatory cleaning mode is completed. Even at the time, filth may remain in the stored water WS.

  In the present embodiment, the amount of cleaning water supplied from the cleaning water supply unit in the preparatory cleaning mode is larger than the amount of cleaning water supplied from the cleaning water supply unit in the normal cleaning mode. For this reason, even if the preparatory cleaning mode is performed in the state where the filth is present in the stored water WS, the filth is reliably conveyed by the cleaning water supplied from the cleaning water supply means, and the stored water WS Can be replaced.

  Further, the control device 80 drives the feedback pump 506d in the preparation cleaning mode.

  When the preparatory cleaning mode is executed, there is a possibility that drawn water has already been stored in the temporary storage tank 50d. When the normal cleaning mode is executed while the drawn water is stored in the temporary storage tank 50d, when the drawing pump 505d is driven, the accumulated water WS existing in the bowl portion 20d and the drain trap pipe 40d is stored. Can not be fully drawn. In this state, when the cleaning water is supplied by the cleaning water supply means, the bowl portion 20d and the drain trap pipe 40d temporarily store a large amount of the stored water WS, so that the stored water WS can be replaced or the filth can be transported. Efficiency will decrease.

  In the present embodiment, by driving the feedback pump 506d in the preparatory cleaning mode, the drawn water in the temporary storage tank 50d is returned to the bowl portion 20d or the drain trap conduit 40d. As a result, when the normal cleaning mode is executed, the temporary storage tank 50d is in a state in which a sufficient amount of the stored water WS can be drawn. When the suction pump 505d is driven in the normal cleaning mode, the stored water WS existing in the bowl portion 20d and the drain trap conduit 40d is sufficiently drawn, so that the efficiency of the replacement of the stored water WS and the transfer of the filth is lowered. Is prevented.

  Further, in the preparatory cleaning mode, the control device 80 completes driving of the feedback pump 506d before the time when the cleaning water supply by the cleaning water supply means is completed.

  If the state where the flush toilet apparatus CSd is not energized for a long time due to a power failure or the like, the drawn water in the temporary storage tank 50d may be in an unsanitary state. In this case, when the feedback pump 506d is driven in the preparatory cleaning mode, the unsanitized drawn water flows into the bowl portion 20d and the drain trap pipe 40d. If unsanitary water remains in the bowl portion 20d and the drain trap pipe 40d as it is, there is a fear that a bad odor may be emitted around the flush toilet device CSd, and the next time the drawing pump 505d is driven again, the temporary storage tank There is a possibility that the temporary storage tank 50d may enter an unsanitary state.

  In this preferred embodiment, the feedback pump 506d is driven in the preparatory cleaning mode, but the driving of the feedback pump 506d is completed before the time when the supply of the cleaning water by the cleaning water supply means is completed. For this reason, even if unsanitary water flows into the bowl portion 20d and the drain trap conduit 40d by driving the feedback pump 506d, the cleaning water supplied by the cleaning water supply means is maintained while the feedback pump 506d is driven. Supply is ongoing. For this reason, since all unsanitary water is discharged by the washing water, it is prevented that the unsanitary water remains in the bowl portion 20d and the drain trap conduit 40d or flows into the temporary storage tank 50d again.

  Furthermore, in the above-described embodiment, a mode has been described in which flush water is allowed to flow in or stop the bowl 20d of the toilet body 10d by opening and closing the electric on-off valve (EV) 813 (see FIG. 6 and the like). In the flush toilet apparatus CSd of the embodiment, as will be described below, it is possible to reliably discharge the waste MB without assistance using stored water even during non-energization such as a power failure.

  That is, in this embodiment, not only the electric on-off valve 813 but also the manual on-off valve 814 is installed in the supply flow path 91 for supplying the rim cleaning water to supply electric power at the time of power failure or forgetting to insert the outlet. In the case of non-energization that cannot be received (see FIG. 17), it is possible to cope with it. More specifically, in the present embodiment, a rim cleaning water supply unit 90 including a supply flow path 91, an electric on-off valve 813, and a manual on-off valve 814 is configured, and the rim cleaning water supply unit 90 forms a rim portion. The cleaning water is supplied to 202d (see FIG. 6 and the like).

  One end of the supply channel 91 is connected so as to communicate with the cleaning water supply hole 30d, and the cleaning water is supplied to the rim portion 202d through the cleaning water supply hole 30d. The electric on-off valve 813 and the manual on-off valve 814 are provided in the middle of the supply channel 91. The specific configuration of the supply channel 91 and the like is not particularly limited, but in this embodiment, the supply channel 91 branches from the supply channel 91 on the upstream side of the electric on-off valve 813 and is supplied on the downstream side of the electric on-off valve 813. A bypass channel 92 that merges with the channel 91 is provided, and a manual on-off valve 814 is provided in the bypass channel 92 (see FIG. 6 and the like).

  The electric on-off valve 813 is a device that is driven by receiving electric power, and opens and closes by electromagnetically driving the valve in accordance with a signal. As described above, the electric on-off valve 813 is connected to the control device 80 and operates according to a cleaning instruction signal or the like transmitted from the control device 80.

  The manual open / close valve 814 is a valve that allows the supply flow path 91 to be opened and closed by a user's manual operation. This manual on-off valve 814 is capable of supplying cleaning water to the rim portion 202d regardless of the state of the electric on-off valve 813. According to this, it is possible to supply electric power at the time of power failure or forgetting to insert the outlet. Even when it is not possible to receive water (when no power is supplied), the cleaning water can be supplied (see FIG. 18).

  In view of the function and purpose of the manual opening / closing valve 814 that enables the supply of cleaning water to the rim portion 202d regardless of the state of the electric opening / closing valve 813, the two supply channels 91 of the rim cleaning water supply means 90 are provided. It is also possible to employ a configuration in which an electric on-off valve 813 and a manual on-off valve 814 are arranged in each system. In this regard, as described above, in the present embodiment, the supply flow path 91 is provided with the bypass flow path 92, and the bypass flow path 92 is provided with the manual opening / closing valve 814. A more compact and simple configuration is possible.

  The manual on-off valve 814 may be of any specific form or configuration as long as the user can manually perform an operation for opening or closing. For example, a valve that opens and closes by rotating the knob clockwise or counterclockwise can be adopted as the manual on-off valve 814, and is opened by user operation to start water flow, and the user A valve such as a so-called flush valve that continues to open until a predetermined amount of washing water is allowed to flow without depending on the above operation and then closes by itself can also be adopted as the manual on-off valve 814.

  Further, when a valve such as the latter flush valve is employed as the manual on-off valve 814, the predetermined amount of cleaning water that passes through a predetermined amount regardless of the user's operation is changed to the normal cleaning mode (reservoir using cleaning water). In the mode), it is preferable to set larger than the amount of cleaning water supplied by the rim cleaning water supply means 90. In such a case, the manual opening / closing valve 814 is configured so that the supply amount (total flow rate) of the cleaning water supplied from the rim portion 202d when not energized is larger than the amount supplied in the normal cleaning mode (the stored water cleaning mode). The opened state is maintained and the bowl portion 20d is washed. In this way, by increasing the amount of washing water at the time of non-energization than the amount of washing water at the time of the normal washing mode, it is possible to perform one opening operation by the user without any assistance using stored water at the time of non-energization. It is preferable in that the filth is surely discharged.

  The flow rate of the washing water described above will be described with a specific example. Rim cleaning water supply during energization: X [L], supply from return pump during energization: Y [L], water supply during normal cleaning mode using stored water: X + Y [L ] On the other hand, the amount of washing water supplied from the manual on-off valve 814: Z [L] is such that Z> X, preferably Z> X + Y, and the assist amount of the feedback pump 506d is also covered with the amount of washing water. It is preferable to be able to do this.

  Heretofore, the configuration in which the electric on-off valve 813 and the manual on-off valve 814 are separate valves has been exemplified. However, the present invention is not limited to such a configuration, and for example, a unit having both functions of the electric on-off valve and the manual on-off valve. It is good also as adopting. For example, a tank disposed in the water outlet 911 of the water supply channel 91, which transmits a manual lever handle 902 and the rotation of the lever handle 902 to the drain valve 904. A pair of ball chains 903 of different lengths, a drain valve 904 that is pulled by the ball chain 903 and opens at two different opening degrees, and supplies cleaning water to the cleaning water supply hole 30d, and the amount of stored water is constant When there is a known water supply tank 901 having a ball tap 905 that closes the water discharge port 911 when the value is reached, a pipe 907 that keeps the water storage amount constant (WL), and the like, there is an electric operation unit on the lever handle 902 described above. 906 can be used as a rim cleaning water supply means 90 having an electric on-off valve and a manual on-off valve (see FIG. 19). In the flush toilet apparatus CSd provided with such rim washing water supply means 90, in the normal washing mode, the electric operation unit 906 that operates electrically (and the ball chain 903 and drain valve 904 that operate in association therewith). ) Functions like an electric on-off valve, and when there is no power supply such as a power failure, the manually operated lever handle 902 (and the associated ball chain 903 and drain valve 904) act like a manual on-off valve. Function. In the case of adopting a unit having such a configuration, the supply amount of cleaning water supplied by the manual on-off valve (lever handle 902) is greater than the supply amount of cleaning water supplied by the electric on-off valve (electric operation unit 906). A large number is preferred.

  The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In other words, those specific examples that have been appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements included in each of the specific examples described above and their arrangement, materials, conditions, shapes, sizes, and the like are not limited to those illustrated, but can be changed as appropriate. Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

  For example, in the present embodiment, the supply flow path 91 having the bypass flow path 912 is illustrated (see FIG. 6 and the like). However, as described above, the supply flow path 91 has two systems, and each system has an electric on-off valve 813 and a manual on-off valve. 814 can also be arranged (see FIG. 20). Even in this case, the two supply channels 91 are unified downstream of the electric opening / closing valve 813 and the manual opening / closing valve 814, and the supply system is a single supply system for the cleaning water supply hole 30d. Is preferable (see FIG. 20).

  Further, in the present embodiment, the configuration in which the electric on-off valve 813 and the manual on-off valve 814 are respectively arranged is illustrated (see FIG. 6 and the like). However, the valve having both functions (for example, an electric type and open / close even manually) The valve can be used as a rim cleaning water supply means 90 disposed in the middle of one supply channel 91 (see FIG. 21). According to such a rim cleaning water supply means 90, when no power can be supplied, the cleaning water can be supplied by manually operating the electric on-off valve.

MB: filth WS: stored water CSd: flush toilet device 10d: toilet body 20d: bowl portion 40d: drain trap pipe 50d: temporary storage tank (storage tank)
80: Control device (control means)
90: Rim cleaning water supply means 91: Supply flow path 92: Bypass flow path 202d: Rim portion 505d: Retraction pump (retraction means)
506d: feedback pump (return means)
813: Electric on-off valve 814: Manual on-off valve

Claims (3)

A flush toilet device that discharges filth as washing water together with washing water,
A bowl part for storing filth and washing water, a rim part provided at the upper part of the bowl part, and a water connected to the downstream side of the bowl part and sealed with the bowl part by the stored water which is the washing water to be stored. A toilet body having a drain trap line to be formed;
Rim cleaning water supply means for supplying cleaning water from the rim portion toward the bowl portion;
A storage tank for temporarily storing a part of the stored water; and a pull-in means for receiving a supply of electric power and drawing the part of the stored water from the bowl part or the drain trap pipe into the storage tank; And a return means that drives by receiving power supply and returns the stored water stored in the storage tank to the bowl part or the drain trap pipe, and the bowl part or the drain trap pipe A stored water use cleaning means that draws the stored water from and uses a part thereof for discharging sewage,
Control means for controlling the rim cleaning water supply means, the drawing-in means, and the feedback means, and when energized, a predetermined electric signal is received and the bowl portion and the drain trap pipe have accumulated water at a predetermined water level or higher. After the retracting means is driven from the stored state, the rim cleaning water supply means is driven to start supplying cleaning water, and the feedback means is driven before the supply of cleaning water is completed. The control means for executing the stored water use cleaning mode;
Have
The rim cleaning water supply means is supplied by a user's manual operation, a supply channel for supplying cleaning water to the rim portion, an electric on-off valve that is driven by power supply to open and close the supply channel. A flush toilet apparatus comprising: a manual on-off valve that opens and closes the flow path.   A bypass channel that branches from the supply channel upstream of the electric on-off valve and merges with the supply channel downstream of the electric on-off valve; The flush toilet apparatus according to claim 1, wherein the flush toilet apparatus is provided. The manual on-off valve is opened by the user's operation and starts passing water, continues to open until a predetermined amount of washing water is passed regardless of the user's operation, and then closes itself. ,
The flush toilet apparatus according to claim 1, wherein the predetermined amount is set to be larger than an amount of cleaning water supplied by the rim cleaning water supply means in the stored water cleaning mode.

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