JP2010189935A - Sanitary washing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sanitary washing device capable of preventing a water supply passage from being clogged by trash intruding into an open type tank and unable to discharge water properly even though the open type tank is installed in the water supply passage. <P>SOLUTION: The sanitary washing device is provided with the open type tank having a solenoid valve for controlling a flow of water from a water supply source by opening and closing the solenoid valve, a flow-in port for introducing the water made to flow by opening the solenoid valve, and an overflow port for making the water introduced through the flow-in port overflow, a pump for pumping the water in the open type tank, a nozzle for discharging the pumped water, and a control part for feeding water into the open type tank by opening the solenoid valve and making the water overflow through the overflow port of the open type tank. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a sanitary washing apparatus including a washing nozzle for washing a washing portion of a human body with discharged washing water.

  In a sanitary washing apparatus provided with a washing nozzle for washing a washing part of a human body with discharged washing water and mounted on the upper part of a Western-style toilet body, a water source is provided in the apparatus body composed of a lower case and an upper case. A reserve tank provided in the middle of the water channel connecting the water tank and the hot water storage tank is stored and placed. A tank-shaped tank body with an open upper surface is projected from the lower case of the main body, and a reserve tank lid is placed above the tank body And forming a bowl-shaped drainage channel for draining surplus water between the bottom surface of the lower case of the main unit and the side wall of the tank body, and opening the drainage opening provided in the bowl-shaped drainage channel into the western toilet body The drainage cutout is provided at the upper end of the side wall of the tank body so as to open toward the bowl-shaped drainage channel, and surplus water supplied excessively into the reserve tank is provided on the side wall of the tank body. From the drainage notch to the bottom case and tank side The waste water is drained toward the bowl-shaped drainage channel formed between the two and the surplus water that has flowed into the bowl-shaped drainage channel flows along the bowl-shaped drainage channel and then flows out of the drainage opening provided in the bowl-shaped drainage channel. What is drained into the body is disclosed (see Patent Document 1).

  In the sanitary washing device disclosed in Patent Document 1, since the reserve tank is opened to the atmosphere at the upper end portion of the side wall of the tank body by a notch for drainage, a piece of toilet paper, cotton dust, etc. Waste may enter the tank and cause clogging in the downstream flow path from the reserve tank to the cleaning nozzle, reducing the flow rate of the discharged cleaning water, reducing the feeling of cleaning, and making it impossible to discharge cleaning water was there.

JP-A-8-120733

  The present invention has been made to solve the above-described problem, and provides a sanitary washing device that suppresses water discharge failure due to dust in a flow path downstream of an open tank while having an open tank in a water supply channel. For the purpose.

  In order to solve the above-described problems, a sanitary washing device according to the present invention includes an electromagnetic valve that controls the flow of water from a water supply source by opening and closing, and an inlet that introduces water that is passed through the electromagnetic valve by opening An open tank that overflows water introduced from the inlet, a pump that pumps water from the open tank, a nozzle that spouts the pumped water, and the solenoid valve And a controller for performing overflow drainage control for supplying water to the open tank and overflowing water from an overflow port of the open tank.

  In a preferred embodiment of the present invention, the amount of water supplied from the water supply source is greater than the amount of water pumped from the open tank by the pump.

  As a result, the amount of water supplied from the water supply source is larger than the amount of water pumped by the pump, so that the water in the open tank surely overflows even during the operation of the pump. Since dust can be discharged from the inside, it is possible to prevent a situation in which water discharge failure occurs due to dust.

  In addition, when the control device performs overflow drainage control, the water in the open tank is drained and the dust that has entered the open tank is discharged from the overflow port. Can be prevented.

  Moreover, in the preferable form of this invention, the said control part performs the said overflow drainage control, before starting the water discharge from the said nozzle, and drives the said pump after that and starts the water discharge from the said nozzle It is characterized by that.

  Thereby, overflow drainage control can be executed at the timing before cleaning of the sanitary cleaning device, and dust can be discharged from the open tank. That is, since the user can discharge the waste by overflowing the water in the open-type tank immediately before using the sanitary washing device, it is possible to prevent the occurrence of water discharge failure due to the dust.

  Further, in a preferred embodiment of the present invention, it further comprises a human body detection means for detecting that the user is near the sanitary washing device, and the control unit detects the user when the human body detection means detects the user. Perform overflow drainage control.

  Thereby, overflow drainage control can be executed at a timing that does not hinder the use of the sanitary washing device, and dust can be discharged from the open tank. That is, since the user exists near the sanitary washing device, the control device determines that the sanitary washing device is used, and executes overflow drainage control. Therefore, since the water in the open tank of the sanitary washing apparatus can be overflowed before the user uses it to discharge the dust, it is possible to prevent the occurrence of water discharge failure due to the dust.

  Moreover, with the preferable form of this invention, the said control part performs the said overflow drainage control, when the state which the said human body detection means detected the user continued for the predetermined time.

  For example, a human body detection sensor may temporarily detect the presence of a human body even though a person has just passed in front of a sanitary washing device. Therefore, when the human body detection sensor detects the human body, if the control device is set to execute the overflow drainage control immediately, when the human body is temporarily detected as described above, Despite the absence of water, the water in the open tank overflows. Accordingly, there arises a problem that the water is unnecessarily overflowed and discarded.

  Thereby, when the state in which the human body detection sensor detects the presence of the human body continues for a predetermined time, it is determined that the user uses the sanitary washing device, and the overflow drainage control is executed. Therefore, the above problem can be solved without overflowing the water in the open tank and causing the water to overflow unnecessarily and thrown away without using the sanitary washing device.

  In a preferred embodiment of the present invention, the apparatus further comprises human body detection means for detecting that the user is near the sanitary washing device, and the control unit detects the user after the user is detected by the human body detection means. The overflow drainage control is performed when a user is not detected by the detection means.

As a result, overflow drainage control is performed at a timing that does not hinder the use of the sanitary washing device, and the water in the open-type tank can be overflowed to discharge the waste, thereby preventing the occurrence of poor water discharge due to dust. it can.
That is, the control device determines that the sanitary washing device has not been used since there is no user nearby, and executes overflow drainage control. Therefore, it is possible to prevent the occurrence of a situation in which the water in the open tank overflows and is discarded even though the sanitary washing device is in use.

  In a preferred embodiment of the present invention, the control unit performs the overflow drainage control when the state where the human body detection unit does not detect the user continues for a predetermined time.

  For example, although the sanitary washing apparatus is being used, the human body detection sensor may temporarily not detect the presence of the human body due to the user's work. Therefore, when the control device is set to execute overflow drainage control immediately when the human body detection sensor stops detecting the human body, when the human body is temporarily not detected as described above, Even though the user is still using the sanitary washing device, there is a problem that the water in the open tank overflows and is discarded.

  Thereby, when the state in which the human body detection sensor does not detect the presence of the human body continues for a predetermined time, it is determined that the user has completely used the sanitary washing device, and the overflow drainage control is executed. Therefore, despite the use of the sanitary washing device, the water in the open-type tank is not wastefully overflowed and discarded, and the above problem can be solved.

  In a preferred embodiment of the present invention, a casing that houses the open tank, a toilet seat and a toilet lid attached to the casing, a toilet lid closing detection sensor that detects that the toilet lid has been closed, The control unit performs the overflow drainage control when the toilet lid closing detection sensor detects that the toilet lid is in a closed state.

  Thereby, the overflow drainage control can be executed at a timing that does not hinder the use of the sanitary washing device, and the water in the open tank can be overflowed to discharge the dust. That is, the control device determines that the sanitary washing device is not in use because the toilet lid is in the closed state, and executes overflow drainage control. Therefore, despite the use of the sanitary washing apparatus, the water in the open tank is not overflowed and discarded, and the problem can be solved.

  In a preferred embodiment of the present invention, the apparatus further includes a switch for the user to operate the sanitary washing device, and the control unit performs the overflow drainage control based on the operation of the switch by the user.

  Accordingly, when dust such as dust enters the open tank due to cleaning of the sanitary washing device, the drainage switch can be operated to execute overflow drainage control. Therefore, overflow drainage control can be executed at a timing that does not hinder the use of the sanitary washing device according to the user's needs, and the water in the open tank can be overflowed to discharge the dust.

  Moreover, in the preferable form of this invention, the said control part performs the said overflow drainage control with the space | interval of fixed time.

  Thereby, it is possible to overflow the water in the open-type tank at a certain time interval and discharge the dust regardless of the use state of the user, and thus it is possible to prevent the occurrence of water discharge failure due to dust. .

  In a preferred embodiment of the present invention, in the open tank, the overflow port is located at an end facing the inflow port.

  Accordingly, in order to smoothly guide the dust that has entered the open tank to the overflow port by the overflow drainage control, the overflow port is positioned at the most downstream side of the flow path at the end opposite to the inflow port that is upstream of the open tank. As a result, the water in the open-type tank can be overflowed to discharge the dust, so that it is possible to prevent the occurrence of water discharge failure due to the dust.

  According to the present invention, while an open tank is provided in the water supply channel, the dust that has entered the open tank is discharged together with water from the overflow port, so that water is discharged from the clogging of the waste in the flow path downstream of the open tank. A sanitary washing device that does not cause defects can be provided.

It is an external view of the toilet apparatus provided with the sanitary washing apparatus which concerns on 1st Embodiment of this invention. It is a perspective view showing the internal configuration of the sanitary washing device according to the first embodiment of the present invention. It is a control block diagram of the sanitary washing device concerning a 1st embodiment of the present invention. It is a perspective view near the open type tank of the sanitary washing device concerning a 1st embodiment of the present invention. It is a schematic diagram which shows the structure of the open type tank of the sanitary washing apparatus which concerns on 1st Embodiment of this invention, and the flow of water. It is a block diagram showing the channel structure of the sanitary washing apparatus which concerns on 1st Embodiment of this invention. It is the schematic showing an example of the sequence of the sanitary washing apparatus which concerns on 1st Embodiment of this invention. It is the schematic showing an example of the sequence of the sanitary washing apparatus which concerns on 2nd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an external view of a toilet apparatus 10 provided with a sanitary washing device according to a first embodiment of the present invention. The toilet device 10 of the specific example shown in FIG. 1 is a so-called “low tank type”, but the present invention is a “water direct pressure type” provided with a valve mechanism for controlling the water flowing to the toilet (stool) 200. It can also be applied to.

  The sanitary washing device 100 of the present embodiment has a main body 110 provided above the rear part of the toilet bowl 200. A toilet lid 130 and a toilet seat (not shown) covered by the toilet lid 130 are pivotally supported on the casing 120 constituting the casing of the main body 110 so as to be rotatable.

  FIG. 2 is a perspective view showing the internal configuration of the sanitary washing device according to the first embodiment of the present invention.

  The casing 120 has a case cover 121 and a case plate 122. The case plate 122 is formed in a flat plate shape and placed on the toilet 200, and a water discharge nozzle 131 is disposed in front of the case plate 122. In addition, on the case plate 122, the deodorizing unit 140, the heat exchanger 150, the control device 160, the remote control receiver 161, the seating sensor 162, the water supply valve unit 170, the open tank 180, etc. are necessary for performing sanitary washing. Various elements are arranged. In addition, a water supply unit 190 that receives water from a water pipe is provided on the side of the case cover 121. In the present specification, the term “water” includes not only cold water but also heated hot water.

  The water discharge nozzle 131 can move forward and backward in the bowl portion of the toilet bowl 200 and has a function of discharging water to a user's “butt” seated on the toilet bowl 200 and washing it. In a state where the water discharge nozzle 131 has advanced into the bowl portion of the toilet bowl 200, water that has passed through the water supply valve unit 170 having a built-in electromagnetic valve that switches between water flow and water stop is discharged.

The heat exchanger 150 heats water supplied from the water supply valve unit 170 in order to discharge hot water from the water discharge nozzle 131. As will be described later, a heater 151 (see FIG. 3) that generates heat when energized is provided inside the heat exchanger 150.
The control device 160 controls the advance / retreat of the water discharge nozzle 131, the discharge amount of water, the heating amount of the heat exchanger 150, and the like based on a signal from a remote controller (not shown) received by the remote control receiver 161.

FIG. 3 is a control block diagram of the sanitary washing device according to the first embodiment of the present invention.
The remote controller R is a user interface for the user to operate the sanitary washing apparatus 100, and corresponds to each of a stop switch S1 for stopping the operation of the sanitary washing apparatus 100 and a plurality of washing modes of the sanitary washing apparatus 100. An operation mode switch is provided. Specifically, there are provided three operation mode switches of “wet” switch S2, “bidet” switch S3, and “soft” switch S4, and the user corresponds to the operation mode that the sanitary washing apparatus 100 wants to execute. Operate the operation mode switch.

  Based on the user's operation, the remote controller R transmits an operation signal to the control device 160. The control device 160 receives the operation signal by the remote control receiver 161 and switches the solenoid valve 174 between closing and opening, switching the water supply destination by the switching valve 192, the deodorizing fan 142, the heater 151, and the cleaning pump. 191, controlling the driving of the nozzle driving device 132. The control device 160 is configured to receive a detection signal transmitted from the seating sensor 162, and appropriately determines the control content based on the received detection signal. Each of these elements controlled by the control device 160 will be described in detail later.

FIG. 4 is a perspective view of the vicinity of the open tank 180 of the sanitary washing device according to the first embodiment of the present invention.
As shown in FIG. 4, a drainage cutout 123 cut out toward the rear side of the toilet bowl 200 is provided in a part of the case plate 122. The drainage notch 123 is located above the bowl portion of the toilet bowl 200.

  The open-type tank 180 has a function of providing a so-called air gap in the water channel so that the dirty water does not flow back to the water pipe even when sewage enters the water channel from the water outlet of the water discharge nozzle 131. The open-type tank 180 can store water therein, and has an inlet 181 that allows water that has passed through the water supply valve unit 170 (see FIG. 2) to flow into the interior, and an outlet that discharges internal water to the outside. 182. Further, the open tank 180 is configured in a horizontally long shape, and an inflow port 181 is disposed on the left side of the deodorizing duct 143 and an outflow port 182 is disposed on the right side. A cleaning pump 191 is provided behind the open tank 180.

Hereinafter, the structure of the open tank 180 will be described in detail.
FIG. 5 is a schematic view showing the structure of the open tank 180 and the flow of water in the sanitary washing device according to the first embodiment of the present invention, and FIG. 5 (a) is a perspective view of the open tank 180. 5B is a cross-sectional view taken along the line AA in the direction from the inlet 181 to the outlet 182 of the open tank 180, and FIG. 5C is a cover portion 187c from the outlet 182 of the open tank 180. BB sectional drawing cut | disconnected in the direction of the lower part of is represented.

  As shown in FIG. 5, the open tank 180 includes a plurality of members that are assembled with packings P <b> 1 to P <b> 3 interposed therebetween. The water inlet lid member 184 provided with the inflow port 181 covers the upper part of the water guide member 185 while being watertight through the packing P1. The water guide member 185 guides the water flowing from the water inlet lid member 184 downward as indicated by an arrow F1. Further, the open tank 180 has a water storage member 186 connected to the water guide member 185. The water storage member 186 guides the water flowing from the water guide member 185 to the right side of the deodorizing duct 143 through the lower side of the deodorizing duct 143 as indicated by an arrow F2. Further, the upper part of the water storage member 186 is covered with a water discharge lid member 187 provided with an outlet 182 through the packing P3 in a watertight manner.

  The water inlet cover member 184 has a shape corresponding to the opening above the water guide member 185, and an inflow port 181 to which the inlet pipe 503 is connected projects from the top surface 184a toward the rear. Further, below the inflow port 181 (inside the open tank 180), a protrusion 184b that guides the water flowing in from the inflow port 181 downward is formed.

  The water storage member 186 includes a box-shaped portion 186b that can store a predetermined amount of water and a cylindrical portion 186a that introduces water into the box-shaped portion 186b. The cylindrical portion 186a is connected to the water guide member 185, and is formed in an elongated and substantially cylindrical shape extending in the left-right direction so as to guide water to the box-shaped portion 186b.

  The upper part of the box-shaped part 186b of the open water storage member 186 is covered watertight by the water discharge lid member 187 via the packing P3. From the top surface 187a, the outlet cover member 187 is provided with an outlet 182 to which the outlet pipe 504 is connected protruding backward. Further, a cylindrical suction cylinder portion 187 b extends so as to be positioned inside the water storage member 186, and the suction cylinder portion 187 b communicates with the outlet 182.

  Further, as shown in FIG. 5C, the front wall 186d constituting the front surface of the water storage member 186 of the open-type tank 180 is bent to the front side at a height H1 from the bottom surface 186c. 186e. Further, an overflow port 183 is provided above the bent portion 186e so as to communicate with an overflow space 188 formed between the bent portion 186e and the cover portion 187c formed on the front side of the water discharge lid member 187. The discharge port 186f is opened at the lower end of the bent portion 186e.

  As described above, by disposing the overflow port 183 of the open tank 180 at the end facing the inflow port 181, dust that has entered the open type tank is separated from the inflow port 181 by the water supplied from the inflow port 181. It gathers in the vicinity of the overflow port 183 arranged at the opposite end. The collected dust can be smoothly guided to the overflow port 183 and discharged out of the open tank.

  Next, the flow of water supplied to the water discharge nozzle 131 will be described with reference to FIG. FIG. 6 is a block diagram showing a water channel configuration of the sanitary washing device according to the first embodiment of the present invention.

  The stop cock 501 connected to the water pipe 500 and the water supply valve unit 170 are connected by a flexible hose 502 having flexibility. The water supply valve unit 170 includes a check valve 171 that prevents the backflow of water upstream, a strainer 172 that captures foreign matter in water, a constant flow valve 173 that maintains a constant flow rate of water regardless of the supply water pressure, and a valve that opens when energized. And a solenoid valve 174 or the like for selectively switching the water flow / water stoppage downstream.

  The water that has passed through the electromagnetic valve 174 flows into the open tank 180 from the inlet 181 through the inlet pipe 503. The inflowed water is stored in the open tank 180, but when the water level exceeds H1, excess water flows out to the outside from the overflow port 183 provided on the front surface of the open tank 180 as indicated by an arrow OF. (overflow). That is, an air gap A1 is formed between the inlet 181 and the overflow port 183, and even if the water level in the open tank 180 rises, the stored water does not reach the inlet 181. Thereby, the backflow prevention of the sewage from the open tank 180 to the upstream is aimed at. In addition, there is a distance of height A2 from the overflow port 183 to the rim surface of the toilet bowl 200, which also functions as an air gap. The occurrence of intrusion is suppressed.

  A cleaning pump 191 is connected downstream of the outlet pipe 504 connected to the outlet 182. The cleaning pump 191 pumps out the water in the open tank 180 from the outlet 182 and supplies it downstream, and can also adjust the flow rate (water flow).

  A heat exchanger 150 is provided downstream of the cleaning pump 191. The heat exchanger 150 includes a heater 151 that is a heating source such as a sheathed heater, for example, and stores and heats water supplied from an upstream cleaning pump 191. When water is supplied from the cleaning pump 191, the heated water is pushed out from the hot water outlet 152 provided at the top of the heat exchanger 150 and flows out. In addition, a float switch 156 that detects the water level of the stored water is provided inside the heat exchanger 150, and when the detected water level is equal to or lower than a predetermined water level, the heater 151 is stopped from driving so-called emptying. It has a prevention function.

  A switching valve 192 and a water discharge nozzle 131 are provided downstream of the heat exchanger 150. The water flowing out from the hot water outlet 152 of the heat exchanger 150 is switched to one of a plurality of water outlets of the water outlet nozzle 131 by the switching valve 192. For example, when the user operates the “wet” switch S2 (see FIG. 3) of the remote controller R, the control device 160 causes water to flow to the water discharge port of the water discharge nozzle 131 corresponding to the “wet” cleaning position. The switching valve 192 is switched so as to be supplied. The water flow and temperature discharged from the water discharge nozzle 131 can be changed by the user according to his / her preference. The user adjusts the driving state of the cleaning pump 191 and the heating amount of the heater 151 by the remote controller R. To do. Further, the water discharge nozzle 131 can be moved forward and backward between a position housed in the casing 120 and a position advanced into the bowl portion of the toilet bowl 200 by driving a nozzle driving device 132 constituted by an electric motor or the like. ing.

  With the above configuration, the water stored in the open tank 180 is pumped out by the cleaning pump 191 and the flow rate pumped out and discharged from the water discharge nozzle 131 is also preferred by the user. It is possible to adjust accordingly. Therefore, when the flow rate of water that is pumped by the cleaning pump 191 and flows out from the outlet port 182 is relatively smaller than the flow rate of water that flows into the open tank 180 from the inlet port 181, the open tank 180. The water level of the water stored inside rises, exceeds H1, and flows out from the overflow port 183 as surplus water as indicated by an arrow OF. This excess water is discharged to the bowl portion 210 of the toilet bowl 200 (see FIG. 6), and is discharged together with the water in the bowl portion when the toilet bowl 200 is drained.

FIG. 7 is a schematic diagram illustrating an example of a sequence of the sanitary washing device according to the first embodiment of the present invention.
Chart A represents a state of whether or not the seating sensor 162 detects the user's seating on the toilet seat, and Chart B represents an open / closed state of the electromagnetic valve 174 of the water supply valve unit 170.
Chart C represents the driving state of the cleaning pump 191, Chart D represents the position of the water discharge nozzle 131, and Chart E represents the water supply destination by the switching valve 192.

When the seating sensor 162 detects that the user is seated on the toilet seat at t1, the control device 160 determines that the sanitary washing device may be used, and electromagnetically prepares for cleaning. The valve 174 is opened to start water supply to the open tank 180. As a result, water is supplied into the open tank 180, and even if the cleaning pump 191 is not driven at this stage, the open tank 180 is overflowed, and the waste in the open tank is removed from the toilet 200. Drain into the bowl.
Next, when the water supply to the open tank 180 is completed at t2, the operation waits for the user to select an operation mode with the remote controller R (see FIG. 3). When the user operates the “wet” switch S <b> 2 (see FIG. 3) at t <b> 3, the control device 160 switches to supply the water flowing out from the heat exchanger 150 to the water outlet corresponding to the “wet” of the water discharge nozzle 131. The valve 192 is switched. Further, at t4, the nozzle driving device 132 is driven, and the water discharge nozzle 131 is advanced from the casing 120 to a position corresponding to “wet”.
Subsequently, the control device 160 opens the electromagnetic valve 174 again at t5, and increases the flow rate (water force) of water supplied by driving the cleaning pump 191 in five steps until t6. Thereby, the water which increases gradually from the water discharge port of the water discharge nozzle 131 is discharged.

  When the user operates the stop switch S1 of the remote controller R at t7, the control device 160 closes the electromagnetic valve 174 to end the discharge of water from the water discharge nozzle 131, and drives the nozzle drive device 132 to drive the water discharge nozzle. 131 is accommodated in the casing 120. In addition, when the switching valve 192 is returned to the “stop” position at t8, the storage of the water discharge nozzle 131 is then completed, and a standby state is entered from t9. When the user finishes cleaning and leaves the toilet seat at t10, the seating sensor 162 enters a non-detection state.

  As described above, before the sanitary washing device 100 is used, water can be supplied into the open tank 180 to overflow, and the dust in the open tank can be discharged. Furthermore, it is only necessary to open the electromagnetic valve 174 and supply water to the open tank 180, and the sanitary washing device 100 does not need to be provided with a separate means for removing dust, and can be configured compactly at low cost. Become.

  The first embodiment of the present invention has been described above with reference to specific examples. However, the present embodiment is not limited to these specific examples. In the above embodiment, when the seating sensor 162 is in the detection state, the control device 160 determines that there is a possibility that the sanitary washing device may be used. The waste in the tank is discharged into the bowl portion of the toilet bowl 200. However, the present invention is not limited to this, and instead of the seating sensor 162, a human body detection sensor that detects that the human body is in the vicinity of the sanitary washing device is provided, and based on the detection state of the human body detection sensor, It may be determined that it will be used. That is, since the human body detection sensor detects that the user has approached the sanitary washing device, it is determined that the sanitary washing device is used, and water is supplied into the open-type tank 180 and overflowed to discharge trash. May be. Thereby, dust can be discharged into the open tank 180 before using the sanitary washing device 100. At that time, in order to prevent erroneous detection, it is preferable that the human body detection sensor continuously detects the human body for a predetermined time, so that it is determined that the human body exists near the sanitary washing device.

  In addition, instead of the seating sensor 162, an operation for instructing a cleaning operation using an operation mode switch (for example, “wet” switch S2), the control device 160 determines that the sanitary cleaning device is used, and immediately before the start of water discharge. Alternatively, the cleaning pump 191 may not be driven, and water may be supplied into the open tank 180 and overflowed to discharge the dust in the open tank. Thereby, the dust in the open-type tank 180 can be discharged immediately before using the sanitary washing device. In addition, when water is discharged by driving the cleaning pump at the same time when the water in the open tank 180 overflows or after a certain time delay (for example, 1 second), water is discharged from the water discharge nozzle from the operation mode switch operation. The time to do so can be shortened, and the occurrence of a situation that impairs the usability of the sanitary washing apparatus can be prevented.

FIG. 8 is a schematic diagram illustrating an example of a sequence of the sanitary washing device according to the second embodiment of the present invention.
Chart A represents a state of whether or not the seating sensor 162 detects the user's seating on the toilet seat, and Chart B represents an open / closed state of the electromagnetic valve 174 of the water supply valve unit 170.

  Chart C represents the driving state of the cleaning pump 191, Chart D represents the position of the water discharge nozzle 131, and Chart E represents the water supply destination by the switching valve 192.

  From the standby state of the sanitary washing device 100, the seating sensor 162 detects the seating of the user on the toilet seat at t1. Next, when the user operates the “wet” switch S <b> 2 (see FIG. 3) at t <b> 2, the control device 160 supplies the water flowing out from the heat exchanger 150 to the water discharge port corresponding to the “wet” of the water discharge nozzle 131. Therefore, the switching valve 192 is switched. Further, at t3, the nozzle driving device 132 is driven, and the water discharge nozzle 131 is advanced from the inside of the casing 120 to a position corresponding to “wet”.

  Subsequently, the control device 160 opens the electromagnetic valve 174 again at t4, and increases the flow rate (water force) of water supplied by driving the cleaning pump 191 in five stages until t5. Thereby, the water which increases gradually from the water discharge port of the water discharge nozzle 131 is discharged.

  When the user operates the stop switch S1 of the remote controller R at t6, the control device 160 closes the electromagnetic valve 174 to end the discharge of water from the water discharge nozzle 131 and drives the nozzle drive device 132 to drive the water discharge nozzle. 131 is accommodated in the casing 120. Further, when the switching valve 192 is returned to the “stop” position at t7 and then the storage of the water discharge nozzle 131 is completed at t8, the standby state is entered from t8. When the user finishes cleaning and leaves the toilet seat at t9, the seating sensor 162 enters a non-detection state.

  When the time during which the non-detected state of the seating sensor 162 continues becomes equal to or longer than a predetermined time T0 (for example, 30 seconds) (t10), the control device 160 determines that the user has finished using the sanitary washing device 100. Then, the control device 160 opens the electromagnetic valve 174 and starts water supply to the open tank 180. As a result, water is supplied into the open tank 180, and even if the cleaning pump 191 is not driven at this stage, the open tank 180 is overflowed, and the waste in the open tank is removed from the toilet 200. Drain into the bowl. When the discharge of dust due to the overflow in the open tank 180 is completed at t11, the control device 160 stops the driving of the cleaning pump 191 and the sanitary cleaning device 100 enters the standby state again.

The seating sensor 162 is also in a non-detecting state when the user sitting on the toilet seat temporarily leaves the toilet seat, for example, to take extra toilet paper. Therefore, if the seating sensor 162 is set in the non-detection state, the controller 160 immediately supplies water into the open-type tank 180 and overflows it to discharge the dust. As described above, the temporary non-detection state is set. In such a case, water is supplied into the open tank 180 even though the user is still using the sanitary washing device 100. Therefore, the water in the user-open tank is not overflowed and discarded.
Therefore, here, when the non-detected state of the seating sensor 162 continues for a predetermined time T0 or more, it is determined that the user has finished using the sanitary washing device 100 and has completely left the toilet seat, and the open tank The above problem is solved by supplying water into 180 and causing it to overflow and discharging the waste.

  As described above, even if garbage such as a piece of toilet paper generated when the sanitary washing device 100 is used enters the open tank 180, the garbage can be discharged immediately after use.

  Heretofore, the second embodiment of the present invention has been described with reference to specific examples. However, the present embodiment is not limited to these specific examples. In the above embodiment, when the seating sensor 162 is in the non-detection state, the control device 160 determines that the sanitary washing device is not in use, and supplies water into the open tank 180 to cause overflow. Are discharged. However, the present invention is not limited to this, and instead of the seating sensor 162, a toilet lid closing detection sensor for detecting that the toilet lid 130 is in a closed state is provided, and based on the detection state of the toilet lid closing detection sensor, It may be determined that the sanitary washing device is not in use. That is, since the toilet lid closing detection sensor detects the closing of the toilet lid 130, it is determined that the sanitary washing device is not in use, and water is supplied into the open tank 180 to cause overflow to be discharged. May be. Accordingly, it is possible to prevent the occurrence of a situation where water is supplied into the open tank 180 and overflows uselessly even though the sanitary washing device is being used.

  Moreover, it replaces with the seating sensor 162 and the human body detection sensor which detects that a human body exists in the state which exists in the vicinity of a sanitary washing apparatus is provided, and the sanitary washing apparatus is not used based on the detection state of this human body detection sensor. It may be determined that the state has been reached. That is, since the human body detection sensor has detected that the user has left the sanitary washing device, it is determined that the sanitary washing device has not been used, and water is supplied into the open tank 180 to overflow. You may discharge the garbage. Accordingly, it is possible to prevent the occurrence of a situation where water is supplied into the open tank 180 and overflows uselessly even though the sanitary washing device is being used.

  Further, for example, a configuration may be adopted in which a dust discharge switch is provided on the outer surface of the casing 120 and the user operates the dust discharge switch so that the control device 160 overflows the water in the open tank 180 and discharges garbage. Good. Thereby, according to a user's needs, water can be supplied in the open-type tank 180 at the timing which does not hinder use of a sanitary washing apparatus, and waste can be discharged | emitted.

  In addition, for example, at a certain interval (for example, every 12 hours) or at a certain time (for example, 2:00 am every day), the control device 160 overflows the water in the open tank 180 and discharges garbage. Good.

      DESCRIPTION OF SYMBOLS 10 ... Toilet apparatus 100 ... Sanitary washing apparatus 110 ... Main-body part 120 ... Casing 121 ... Case cover 122 ... Case plate 123 ... Case plate drainage notch 130 ... Toilet lid 131 ... Water discharge nozzle 132 ... Nozzle drive device 140 ... Deodorizing unit 141 ... Exhaust port 142 ... Deodorizing fan 143 ... Deodorizing duct 150 ... Heat exchanger 151 ... Heater 152 ... Outlet port 156 ... Float switch 160 ... Control device 161 ... Remote control receiver 162 ... Seating sensor 170 ... Water supply valve unit 174 ... Solenoid valve 180 ... Open tank 181 ... Inlet 182 ... Outlet 183 ... Overflow port 184 ... Inlet cover member 185 ... Inlet member 186 ... Reservoir member 187 ... Outlet cover member 188 ... Overflow space 190 ... Water supply part 191 ... Washing Pump 192 ... switching valve 200 ... toilet 210 ... bowl portion 500 ... water pipes 501 ... stop cock 502 ... flexible hose 503 ... inlet pipe 504 ... outlet pipe

Claims (11)

A solenoid valve for controlling the water flow from the water supply source by opening and closing;
An open-type tank having an inlet for introducing water that is passed through the solenoid valve and an overflow port for overflowing water introduced from the inlet;
A pump for pumping water from the open tank;
A nozzle for discharging the pumped water;
A controller that opens the solenoid valve to supply water to the open tank and performs overflow drainage control to overflow water from an overflow port of the open tank;
A sanitary washing device comprising:   The sanitary washing device according to claim 1, wherein the amount of water supplied from the water supply source is larger than the amount of water pumped from the open tank by the pump.   The control unit performs the overflow drainage control before starting water discharge from the nozzle, and thereafter starts water discharge from the nozzle by driving the pump. Sanitary washing equipment. It further comprises a human body detecting means for detecting that the user is near the sanitary washing device,
The sanitary washing apparatus according to claim 1, wherein the control unit performs the overflow drainage control when a user is detected by the human body detection means.   The sanitary washing device according to claim 4, wherein the control unit performs the overflow drainage control when the state where the human body detecting unit detects the user continues for a predetermined time. It further comprises a human body detecting means for detecting that the user is near the sanitary washing device,
2. The overflow drain control according to claim 1, wherein the control unit performs the overflow drainage control when the user is not detected by the human body detection unit after the user is detected by the human body detection unit. Sanitary washing device.   The sanitary washing device according to claim 6, wherein the control unit performs the overflow drainage control when the state where the human body detection unit does not detect the user continues for a predetermined time. A casing for housing the open tank;
A toilet seat and a toilet lid attached to the casing;
A toilet lid closing detection sensor for detecting that the toilet lid is in a closed state;
Further comprising
The sanitary washing device according to claim 1, wherein the control unit performs the overflow drainage control when the toilet lid closing detection sensor detects that the toilet lid is in a closed state. It further includes a switch for the user to operate the sanitary washing device,
The sanitary washing device according to claim 1, wherein the control unit performs the overflow drainage control based on an operation of the switch by a user.   The sanitary washing apparatus according to claim 1, wherein the control unit performs the overflow drainage control at regular time intervals.   The sanitary washing apparatus according to any one of claims 1 to 10, wherein in the open tank, the overflow port is located at an end facing the inflow port.

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