JP5811744B2 - Toilet bowl cleaning device - Google Patents

Description

  The present invention relates to a toilet bowl cleaning device, and in particular, an electromagnetic valve for opening and closing a water supply channel for supplying flush water to the toilet bowl, a detection unit for detecting a user of the toilet bowl, and an operation for receiving a user operation And when the detection unit detects the end of use of the toilet by the user, the first control for automatically opening the electromagnetic valve to clean the toilet and the electromagnetic operation when a predetermined operation is performed on the operation unit The present invention relates to a toilet bowl cleaning device including a control unit that performs second control for opening a valve and cleaning a toilet bowl.

  The toilet bowl is washed by supplying flush water to the toilet bowl (for example, discharging water). Here, the degree of soiling of the toilet bowl varies depending on the form of use (large use, small use, etc.) and the usage situation of the user, and the washing water required for cleaning the toilet bowl varies depending on the degree of soiling of the toilet bowl.

  If only toilet bowl cleaning is intended, supplying a large amount of cleaning water can achieve a level of cleaning above a certain level, but recently, demands for global environmental conservation and economics have increased, and the level of cleaning above a certain level has increased. In addition, there is a growing demand for water saving. Therefore, it is desired to develop a technique for appropriately setting the supply amount of cleaning water in accordance with the usage form and usage situation.

Here, there are two types of cleaning methods: voluntary cleaning and automatic cleaning.
The will cleaning is a method of cleaning the toilet bowl when the user performs a predetermined operation on the operation unit (such as a remote controller). In the will cleaning, it is expected that the user will determine the appropriate amount of cleaning water by visually checking the degree of dirt, so it is expected that a relatively appropriate cleaning will be performed. If the cleaning is insufficient, the cleaning will be performed again. It is also possible to do.

  Automatic cleaning, on the other hand, cleans the toilet bowl when the user's sitting or leaving room is detected based on the detection result of the user detection sensor, regardless of the user's operation. It is a technique to wash the toilet bowl when it exceeds. Since automatic cleaning is not performed based on visual judgment, it is unclear whether the amount of cleaning water is appropriate for the actual degree of contamination.

  In order to solve such a problem, conventionally, the degree of cleaning, that is, the supply amount of cleaning water to the toilet is automatically changed according to the use time of the toilet. The use time of the toilet is measured based on the detection result of the user detection sensor, for example.

  Specifically, thresholds for use time between large use and small use are set in advance, and if `` toilet use time ≥ set time '', it is determined that the use is large and a large amount of washing water is supplied. If "toilet use time <set time", it is determined that the toilet is used for a short time, and a small amount of washing water is supplied.

  However, if this technology is used, large and small use are uniformly determined based only on the usage time, so if the usage time of the toilet exceeds the set time, even if it is small use Wash water is supplied to the toilet bowl. In order to cope with such a problem, Patent Document 1 proposes a toilet cleaning apparatus that adjusts the amount of cleaning water in consideration of the usage situation of the front and rear users.

  Specifically, the human body sensor and the washing remote control are provided while the means for determining whether the use is large or small based on the use time of the toilet bowl as in the technique described above. And when it is judged that it is a large use, the same amount of washing water as the large use is supplied at the next washing.

JP-A-2005-240378

  However, the technique described in Patent Document 1 described above is always the same as the heavy use when the first user performs a predetermined operation on the operation unit when the first user is heavily used. However, in some cases, a small amount of less-used washing water may be sufficient. Also, an intermediate amount of wash water between large and small use may be optimal. Therefore, if a large amount of wash water similar to that for large use is supplied, waste water is flowing.

  This invention is made | formed in view of the said subject, and aims at provision of the toilet bowl washing | cleaning apparatus which can optimize the quantity of washing water according to an actual use condition.

  One aspect of the toilet cleaning device according to the present technology includes an electromagnetic valve for opening and closing a water supply channel for supplying cleaning water to the toilet, a detection unit for detecting a user of the toilet, and a user operation. An operation unit for receiving, a first control for automatically opening the electromagnetic valve and washing the toilet when the detection unit detects the end of use of the toilet by the user, and a predetermined operation on the operation unit. And a control unit that performs a second control for opening the electromagnetic valve and cleaning the toilet when performed, wherein the control unit performs a first predetermined time from the first control. When the second control is performed, the opening time of the electromagnetic valve related to the first control performed thereafter is set to the opening time of the electromagnetic valve related to the first control performed before that time. It is the structure made longer.

  According to the configuration, after the first control for automatically washing the toilet bowl is performed, the first toilet bowl is washed in accordance with a user's operation within a certain time (the first predetermined time period). When the control 2 is performed, the control unit determines that the cleaning time (or the amount of cleaning water) by the first control is insufficient, and automatically opens the solenoid valve according to the first control. The valve time is adjusted to be longer than the previous valve opening time. Therefore, the valve opening time of the electromagnetic valve according to the first control is adjusted to a time according to the actual use situation of the toilet cleaning device, and the amount of the wash water is optimized to the amount according to the actual use situation. . Therefore, it is possible to achieve an appropriate degree of cleaning and water saving without forcing the administrator and the user to make troublesome settings and adjustments.

  Another aspect of the toilet bowl cleaning device according to the present technology is an electromagnetic valve for opening and closing a water supply path for supplying flush water to the toilet bowl, a detection unit for detecting a user of the toilet bowl, and accepting a user operation A first control for automatically opening the electromagnetic valve and washing the toilet when the user detects the end of use of the toilet by the user, and a predetermined operation on the operation unit. And a controller that performs a second control for opening the electromagnetic valve and cleaning the toilet when performed, the controller after performing the first control, When the second control is performed within a second predetermined time immediately before the detection unit detects the next user or within a third predetermined time immediately after, the electromagnetic according to the first control performed thereafter. The solenoid valve according to the first control which has been performed before the valve opening time It is configured to be longer than the valve opening time.

  According to the above configuration, after the first control for automatically washing the toilet bowl is performed, a predetermined time before and after the next user is detected (the second predetermined time immediately before, the third immediately after If the second control for cleaning the toilet in response to the user's operation is performed within a predetermined time, the control unit is insufficient in the cleaning time (or the amount of cleaning water) by the first control. The valve opening time of the electromagnetic valve according to the first control is automatically adjusted to be longer than the valve opening time until then. Therefore, the valve opening time of the electromagnetic valve according to the first control is adjusted to a time according to the actual use situation of the toilet cleaning device, and the amount of the wash water is optimized to the amount according to the actual use situation. . Therefore, it is possible to achieve an appropriate degree of cleaning and water saving without forcing the administrator and the user to make troublesome settings and adjustments.

  Another aspect of the toilet bowl cleaning device according to the present technology is an electromagnetic valve for opening and closing a water supply path for supplying flush water to the toilet bowl, a detection unit for detecting a user of the toilet bowl, and accepting a user operation A first control for automatically opening the electromagnetic valve and washing the toilet when the user detects the end of use of the toilet by the user, and a predetermined operation on the operation unit. And a controller that performs a second control for opening the electromagnetic valve and cleaning the toilet when performed, wherein the controller is configured to perform a first predetermined control from the first control. After performing the second control performed within the time and the first control, the third predetermined time immediately after or within the second predetermined time immediately before the detection unit detects the next user. The number of occurrences of at least one of the second control performed in the first control When the ratio exceeds the predetermined ratio, the opening time of the solenoid valve related to the first control performed thereafter is set to the opening time of the solenoid valve related to the first control performed before that time. It is the structure made longer than valve time.

  According to the configuration, the control unit performs the toilet according to the operation of the user within a certain time (the first predetermined time) after the first control for automatically washing the toilet is performed. The number of occurrences of the second control for cleaning the toilet and a predetermined time before and after the next user is detected after the first control for automatically cleaning the toilet bowl (the second predetermined immediately before) And at least one of the occurrences of the second control for cleaning the toilet in accordance with the user's operation within the time (the third predetermined time immediately after). And when this count number becomes more than predetermined ratio with respect to the frequency | count of generation | occurrence | production of said 1st control, when the said control part is insufficient in the washing | cleaning time (or quantity of washing water) by said 1st control. Judgment is made and the valve opening time of the solenoid valve according to the first control is automatically adjusted to be longer than the valve opening time up to that time. Therefore, the valve opening time of the electromagnetic valve according to the first control is adjusted to a time according to the actual use situation of the toilet cleaning device, and the amount of the wash water is optimized to the amount according to the actual use situation. . Therefore, it is possible to achieve an appropriate degree of cleaning and water saving without forcing the administrator and the user to make troublesome settings and adjustments.

  In one of the selective aspects of the toilet bowl cleaning apparatus according to the present technology, the control unit performs the second control performed within the first predetermined time from the first control, or the first After the control is performed, the number of occurrences of the second control performed within the second predetermined time immediately before the detection unit detects the next user or the third predetermined time immediately after is detected. When the number of occurrences of the first control is less than a predetermined ratio, the opening time of the electromagnetic valve related to the first control performed thereafter is related to the first control performed before that. The electromagnetic valve is configured to be shorter than the valve opening time.

  Also in the above-described configuration, the controller controls the toilet according to the user's operation within a certain time (the first predetermined time) after the first control for automatically washing the toilet is performed. The number of occurrences of the second control to be washed and the predetermined time before and after the next user is detected after the first control to automatically wash the toilet bowl (the second predetermined time immediately before) In the third predetermined time immediately thereafter, at least one of the number of occurrences of the second control for cleaning the toilet in accordance with the user's operation is counted. And when this count number becomes less than a predetermined ratio with respect to the number of occurrences of the first control, the control unit determines that the cleaning time (or the amount of cleaning water) by the first control is excessive. Then, the valve opening time of the solenoid valve according to the first control is automatically adjusted so as to be shorter than the valve opening time until then. Therefore, the valve opening time of the electromagnetic valve according to the first control is adjusted to a time according to the actual use situation of the toilet cleaning device, and the amount of the wash water is optimized to the amount according to the actual use situation. . Therefore, it is possible to achieve an appropriate degree of cleaning and water saving without forcing the administrator and the user to make troublesome settings and adjustments.

  In addition, the toilet bowl washing | cleaning apparatus demonstrated above contains various aspects, such as being implemented in the state integrated in another apparatus, or being implemented with another method. The present invention also provides a toilet cleaning system including the toilet cleaning device, a control method having steps corresponding to the configuration of the device described above, a program for causing a computer to implement functions corresponding to the configuration of the device described above, and the program recorded therein. It can also be realized as a computer-readable recording medium.

It is a perspective view which shows the external appearance of a toilet bowl washing | cleaning apparatus. It is a block diagram which shows the function of a toilet bowl washing | cleaning apparatus. It is a flowchart which concerns on 1st Example of a toilet bowl washing process. It is a flowchart which concerns on 1st Example of a toilet bowl washing process. It is a timing chart explaining the 1st example of toilet bowl washing processing. It is a figure explaining the threshold value which judges the number of washing | cleaning frequency. It is a flowchart which concerns on 2nd Example of a toilet bowl washing process. It is a flowchart which concerns on 2nd Example of a toilet bowl washing process. It is a flowchart which concerns on 2nd Example of a toilet bowl washing process. It is a timing chart explaining the 2nd example of toilet bowl washing processing. It is a timing chart explaining the 2nd example of toilet bowl washing processing.

Hereinafter, embodiments of the present invention will be described in the following order.
(1) Configuration of the present embodiment:
(2) First example of toilet cleaning process:
(3) Second example of toilet cleaning process:

(1) Configuration of the present embodiment:
FIG. 1 is a perspective view showing an appearance of a toilet bowl cleaning device, and FIG. 2 is a block diagram showing functions of the toilet bowl cleaning device.

  As shown in FIG. 1, the toilet bowl cleaning device 1 of this embodiment cleans the toilet bowl 2 by discharging water into the toilet bowl 2. The toilet cleaning device 1 discharges water supplied from the water supply pipe 3 to the toilet 2 as cleaning water for the toilet 2. The water supplied by the water supply pipe 3 is supplied to the toilet bowl cleaning device 1 by the inflow pipe 5 through the stop cock 4.

  The toilet bowl cleaning device 1 has a solenoid valve 11 and the like, which will be described later, built in the casing 15, and water supplied to the casing 15 by the inflow pipe 5 does not flow into the toilet bowl 2 when the solenoid valve 11 is closed. When opened, it flows into the toilet bowl cleaning device 1. Wash water discharged from the toilet bowl cleaning device 1 flows into the toilet bowl 2 through an outflow pipe 6 connected to the toilet bowl 2. In addition, in this embodiment, the water supply pipe 3, the water stop cock 4, the water flow path in a main body in the casing 15 mentioned later, and the outflow pipe 6 comprise a water supply path.

  As shown in FIG. 2, the toilet bowl cleaning device 1 includes a device body 10 including an electromagnetic valve 11, a human body detection sensor 12, a controller 13, and a remote control device 14. In the toilet bowl cleaning apparatus 1, the apparatus main body 10, the human body detection sensor 12, and the controller 13 are provided in a casing 15 having a substantially rectangular parallelepiped outer shape.

  The remote control device 14 is provided at a position where a user (hereinafter simply referred to as “user”) of the toilet bowl 2 can operate while sitting on the toilet bowl. In FIG. 1, for example, in the room where the toilet bowl 2 is installed. Attached to the wall.

  In the toilet bowl cleaning device 1 of the present embodiment, when the user performs an operation for toilet bowl cleaning in the remote control device 14, the intention cleaning in which cleaning water is discharged to the toilet bowl 2 and the intention cleaning are not performed. Automatic washing is performed in which washing water is automatically discharged into the toilet bowl 2.

  Here, water discharge to the toilet 2 as automatic washing is performed after elapse of a predetermined time from when the user is no longer detected by the human body detection sensor 12 after the user's stool. Hereinafter, the detail of each part of the toilet bowl washing | cleaning apparatus 1 is demonstrated.

  As shown in FIG. 2, the apparatus main body 10 includes a water inlet 16 that receives supply of washing water, and a water outlet 17 that serves as an outlet for washing water discharged to the toilet 2. Connected to the water inlet 16 is an inflow pipe 5 (FIG. 1) that guides water supplied by the water supply pipe 3 (FIG. 1) to the toilet bowl cleaning device 1. An outlet pipe 6 (FIG. 1) that guides wash water to the toilet 2 is connected to the outlet 17.

  In the apparatus main body 10, the wash water supplied from the water supply pipe 3 flows from the water inlet 16 through the inflow pipe 5 (see arrow A1). The washing water flowing from the water inlet 16 flows out from the water outlet 17 through the water passage formed in the apparatus main body 10 (see arrow A2), and is supplied to the toilet 2 through the outlet pipe 6. . In the following description, the passage of the cleaning water provided between the water inlet 16 and the water outlet 17 in the apparatus main body 10 is referred to as “main body water passage”.

  The apparatus main body 10 has a piston valve 18. The piston valve 18 is provided on the downstream side of the water inlet 16 in the water passage in the main body. The piston valve 18 is movable in the vertical direction within the water passage in the main body. Here, the up and down direction is a substantially vertical direction with respect to the floor surface on which the toilet 2 is installed, that is, a substantially vertical direction. In the following description, the vertical direction, which is the moving direction of the piston valve 18, is defined as the vertical direction in the toilet bowl cleaning device 1.

  The piston valve 18 has a packing 18a. The packing 18 a seals between a wall surface formed as a sliding surface of the piston valve 18 in the apparatus main body 10 and an outer peripheral surface of the piston valve 18.

  In the apparatus main body 10, a back pressure chamber 19 is provided above the piston valve 18. The back pressure chamber 19 communicates with the water inlet 16 via a communication passage 18 b formed inside the piston valve 18.

  A secondary water channel 20 is provided below the piston valve 18. The water flowing into the secondary water channel 20 flows out from the water outlet 17. The water inlet 16 and the secondary water channel 20 are in a non-communication state when the piston valve 18 is located at the lowermost end, and are in a communication state when the piston valve 18 rises from the lowermost position.

  The back pressure chamber 19 communicates with the secondary side water channel 20 by the bypass channel 21. The bypass valve 21 is provided with the electromagnetic valve 11. The electromagnetic valve 11 opens and closes the bypass flow path 21, and when the electromagnetic valve 11 is opened and closed, the back pressure chamber 19 and the secondary side water channel 20 communicate with each other via the bypass flow path 21. Is switched.

  In the apparatus main body 10 having such a configuration, flush water is discharged to the toilet 2 as follows. In a state where the electromagnetic valve 11 is closed, water flowing from the water supply pipe 3 into the water inlet 16 through the inflow pipe 5 passes through the communication passage 18b of the piston valve 18 and the back pressure chamber 19 on the upstream side of the electromagnetic valve 11. Into the back pressure chamber 19.

  When water accumulates in the back pressure chamber 19, the pressure in the back pressure chamber 19 becomes higher than the pressure in the secondary water channel 20 due to the water pressure in the back pressure chamber 19, and the piston valve 18 is pushed down. Thereby, between the water inlet 16 and the secondary side water channel 20 is closed by the piston valve 18 (it will be in a non-communication state). That is, in a state where the electromagnetic valve 11 is closed, water flowing from the water inlet 16 is blocked by the electromagnetic valve 11 and the piston valve 18, and water is not discharged from the water outlet 17.

  Thus, when the solenoid valve 11 is opened from the state where the solenoid valve 11 is closed and the space between the water inlet 16 and the secondary water channel 20 is closed by the piston valve 18, the back pressure chamber is opened. The water in 19 flows into the secondary side water channel 20 through the bypass channel 21. As a result, the pressure in the back pressure chamber 19 is lowered, and the packing 18a is pushed up by the water in the water inlet 16, whereby the piston valve 18 is raised (moved to the back pressure chamber 19 side). As the piston valve 18 rises, the water inlet 16 and the secondary side water channel 20 are in communication with each other, and the water flowing into the water inlet 16 flows into the secondary side water channel 20 and flows out from the water outlet 17 to the toilet 2. Supplied.

  Then, when the solenoid valve 11 is closed from the state in which water is flowing out from the water outlet 17 by opening the solenoid valve 11, a part of the water flowing from the water inlet 16 is back from the communication passage 18b of the piston valve 18. It flows into the pressure chamber 19 and begins to accumulate in the back pressure chamber 19. As a result, the pressure in the back pressure chamber 19 increases, the pressure in the secondary water channel 20 decreases, and the piston valve 18 is pushed down. And finally, between the water inlet 16 and the secondary side water channel 20 is closed by the piston valve 18, and it will be in the water stop state in which the water discharge from the water outlet 17 is not performed.

  In the discharge of the wash water to the toilet 2 by opening and closing the electromagnetic valve 11, the amount of the wash water discharged to the toilet 2 is adjusted by controlling the valve opening time (exactly the excitation time) of the electromagnetic valve 11. Is done. Therefore, the valve opening time of the electromagnetic valve 11 is longer in the case of stool washing with a large amount of water discharge than in the case of urine washing with a small amount of water discharge.

  Thus, in the toilet bowl washing | cleaning apparatus 1 of this embodiment, the solenoid valve 11 which the apparatus main body 10 has is an on-off valve for opening and closing a water flow path in a main body, and supply of the wash water discharged to the toilet bowl 2 is provided. It functions as a cleaning valve that opens and closes the passage. That is, the opening and closing of the water passage in the main body, that is, the water discharge state and the water stop state of the toilet bowl cleaning device 1 are switched by opening and closing the electromagnetic valve 11.

  The electromagnetic valve 11 is connected to the controller 13, and the controller 13 controls the opening / closing operation of the electromagnetic valve 11. The solenoid valve 11 is electrically controlled in accordance with a control signal from the controller 13 to open and close the bypass passage 21. Opening and closing of the bypass passage 21 by the electromagnetic valve 11 is accompanied by opening and closing of the water passage in the main body as described above.

  The human body detection sensor 12 functions as a human body detection unit that detects a user. The human body detection sensor 12 is a non-contact sensor that automatically detects the presence of a user. In the present embodiment, the human body detection sensor 12 is an infrared sensor. Therefore, the human body detection sensor 12 includes a light emitting element that emits infrared light and a light receiving element that receives reflected light of the emitted infrared light.

  The human body detection sensor 12 is disposed in the casing 15 such that the side that transmits and receives infrared rays faces the user. The casing 15 is provided with a detection window 12a for securing infrared transmission and reception by the human body detection sensor 12 on the wall surface on the side where the user is located (see FIG. 1).

  In the present embodiment, the presence / absence of a user sitting on the toilet seat 2a of the toilet 2 is detected by the human body detection sensor 12. Therefore, the user sitting on the toilet seat 2 a is located within the detection range of the human body detection sensor 12. According to the human body detection sensor 12, the user is within the detection range of the human body detection sensor 12, and the user sitting on the toilet seat 2 a is separated from the detection range of the human body detection sensor 12. Is detected.

  The human body detection sensor 12 is connected to the controller 13. A signal output from the human body detection sensor 12 is input to the controller 13, and the presence / absence of the user is detected by the controller 13.

  In the present embodiment, the human body detection sensor 12 is an infrared sensor, but as a human body detection unit for detecting a user, various sensors such as a known non-contact sensor and a contact sensor are employed in addition to the infrared sensor. Can do. Further, the human body detection unit that detects the user is not housed in the casing 15 together with the apparatus main body 10 and the like, as in the human body detection sensor 12 of the present embodiment, and is, for example, integrally incorporated in the toilet seat 2a. It may be.

  The controller 13 functions as a control unit that receives the detection signal from the human body detection sensor 12 and controls the opening / closing operation of the electromagnetic valve 11. Specifically, the controller 13 controls the operation of the electromagnetic valve 11 based on a signal output from the human body detection sensor 12, an operation on the remote control device 14, or the like. For this reason, the controller 13 receives a detection signal from the human body detection sensor 12 and an operation signal from the remote control device 14. Further, a control signal for the electromagnetic valve 11 is output from the controller 13.

  The controller 13 has various functional parts such as a CPU (Central Processing Unit), a memory, and an input / output interface that are connected to each other by a data communication bus or the like. The controller 13 has an input interface for receiving input signals from the human body detection sensor 12 and the remote control device 14 and an output interface for outputting a control signal for the electromagnetic valve 11 as an input / output interface.

  The controller 13 has a storage unit 13a that stores various data used for control of a control program and automatic cleaning as described later. The storage unit 13a is configured by, for example, a ROM (Read Only Memory), a RAM (Random Access Memory), or the like connected to the CPU. The CPU of the controller 13 functions as a calculation unit that performs a predetermined calculation according to a control program or the like. The controller 13 receives power supply via an AC adapter (not shown).

  The remote control device 14 functions as an operation unit that supplies an operation signal for controlling the opening / closing operation of the electromagnetic valve 11 to the controller 13. Specifically, the remote control device 14 transmits an infrared signal as an operation signal supplied to the controller 13. For this reason, the remote control device 14 has a transmitter 22 that transmits an infrared signal. In the present embodiment, as shown in FIG. 1, the remote control device 14 has a rectangular thick plate-like outer shape, and is provided with transmitters 22 at two corners on both sides that are the upper side in the installed state. ing.

  On the other hand, as shown in FIG. 2, the apparatus main body 10 includes a receiving unit 23 that receives an infrared signal transmitted from the transmitting unit 22 of the remote control device 14. The receiving unit 23 is connected to the controller 13, and the infrared signal received by the receiving unit 23 is input to the controller 13 by being converted into an electrical signal.

  The remote control device 14 has a washing switch 24 as an operation switch for performing toilet flushing, that is, discharging flush water to the toilet 2. When the washing switch 24 is operated by a user or the like, the electromagnetic valve 11 is opened as described above, the toilet flushing device 1 enters the water ejection state, and the flushing water is discharged from the water inlet 16 to the toilet 2. In the present embodiment, the washing switch 24 is a switch for stool washing. However, although illustration is omitted, the remote control device 14 also has other operation switches such as a switch for washing urine.

  The remote control device 14 incorporates a battery for receiving supply of driving power. However, the driving power of the remote control device 14 may be supplied from a power source provided outside the toilet bowl cleaning device 1. In the present embodiment, the operation signal supplied from the remote control device 14 to the controller 13 is an infrared signal, but is not limited to this method. The operation signal from the remote control device 14 may be, for example, a signal using electromagnetic waves of other wavelengths, a signal using ultrasonic waves, a signal transmitted by a wired method, or the like.

(2) First example of toilet cleaning process:
Next, a first embodiment of the toilet bowl cleaning process performed by the toilet bowl cleaning apparatus will be described with reference to the flowcharts of FIGS. 3 and 4 and the timing chart of FIG. The toilet bowl cleaning process according to the first embodiment is described separately in FIGS. 3 and 4, and the number 1 with a circle indicates a connection point in the flowcharts of FIGS. 3 and 4. Further, it is assumed that the controller of the toilet bowl cleaning process is the controller 13, and the toilet bowl cleaning process is repeatedly executed while the toilet bowl cleaning device 1 is powered on.

[Human body detection processing]
The controller 13 detects the user who sits on the toilet 2, approaches the toilet 2, or enters the private room in which the toilet 2 is installed for the purpose of stool using the various detection means described above. Can do. In the following, a person who intends to use the stool will be specifically called a “user”. In the present embodiment, when the human body continuation detection time exceeds a predetermined time, the detected human body is determined as the user. Hereinafter, a specific description will be given with reference to FIGS.

  In the example shown in FIGS. 3 and 4, the controller 13 determines whether or not the human body detection sensor 12 detects a human body (S100). When the human body detection sensor 12 detects a human body (S100: Yes), the human body is continued. It is determined whether the detection time has passed a predetermined time (S130). This predetermined time is hereinafter referred to as “on delay time”. In the present embodiment, information related to the on-delay time is stored in the storage unit 13a.

  In the present embodiment, the controller 13 has a counter function for counting the human body continuation detection time. Hereinafter, this counter will be referred to as a “human body detection counter”. The controller 13 starts counting the human body detection counter when the human body detection sensor 12 first detects the currently detected human body. Note that the time when the human body detection sensor 12 first detects the currently detected human body is, for example, in step S100 of the toilet bowl cleaning process executed immediately after the toilet bowl cleaning process in which the human body was not detected in step S100. Indicates the time when is detected.

  When the on-delay time has elapsed (S130: Yes), the controller 13 determines that the user is detected and stores a predetermined flag in the storage unit 13a (S135). If the on-delay time has not elapsed since the time during which the human body was continuously detected (S130: No), it is determined that the user has not been detected, and the predetermined flag is not stored in the storage unit 13a. Hereinafter, the predetermined flag is referred to as an “on-delay flag”.

  In the present embodiment, the on-delay flag is information indicating that the user has been detected, and the user is seated to perform automatic cleaning, or the user is willing to use the remote control as soon as the user leaves the seat. Cleared after washing. Accordingly, in the toilet bowl cleaning process that is repeatedly executed thereafter, the controller 13 can determine that the user is detecting when the on-delay flag is stored in the storage unit 13a, and the storage unit 13a When the on-delay flag is not stored, it can be determined that the user has not been detected, or that it is being determined whether the detected human body is the user.

[Automatic cleaning]
The controller 13 performs automatic cleaning when a predetermined condition is satisfied. In the present embodiment, the predetermined condition is that the human body detection sensor 12 enters a non-detection state with the on-delay flag set and a predetermined time elapses after entering the non-detection state. The predetermined time mentioned here is a time for determining whether the user has left the room or left the room without performing will washing after adding the work, and hereinafter referred to as “off-delay time”. To do.

<Automatic cleaning start timing>
In the flowcharts shown in FIGS. 3 and 4, the controller 13 determines whether the human body detection sensor 12 detects a human body (S100). If the human body detection sensor 12 does not detect a human body (S100: No), the controller 13 is turned on. The presence or absence of a delay flag is confirmed (S105).

  Here, if the on-delay flag is not stored in the storage unit 13a (S105: clearing), it is determined whether or not will cleaning has been performed (S140). In step S140, if the will cleaning is performed after the on-delay flag is cleared (S140: Yes), it is determined whether the will cleaning is performed within the time after the solenoid valve is closed (S145). ) The meaning of the time after the solenoid valve is closed will be described later.

  In the case of voluntary cleaning performed outside the time after the solenoid valve is closed (S145: No), the off-delay time determination processing (S110) and the automatic cleaning start processing (S115 to S125) are skipped. Also, when the will-cleaning is not performed after the on-delay flag is cleared (S140: No), the determination process of the off-delay time (S110) and the automatic cleaning start process (S115 to S125) are skipped.

  At this time, if steps S110 to S125 are skipped, a process for confirming the state of the electromagnetic valve 11 is performed (S155). However, since the electromagnetic valve 11 is closed (S155: closed), an automatic cleaning end process (S160 to S160). S170) is also skipped.

  In the case of voluntary cleaning performed within the time after the solenoid valve is closed (S145: Yes), the “cleaning deficiency counter” used in the adjustment processing of the valve opening time of the solenoid valve 11 described later is increased by one. The meaning of the “cleaning deficiency counter” will be described later.

  On the other hand, when the on-delay flag is stored in the storage unit 13a (S105: during setting), it is determined whether the off-delay time has elapsed (S110).

  When the off-delay time has not elapsed (S110: No), the automatic cleaning start process (S115 to S125) including the process of opening the solenoid valve 11 is skipped, except at this time when will cleaning is performed. Since the solenoid valve 11 is closed (S155: closed), the process of keeping the solenoid valve 11 open for a predetermined time (S155, S160) and the process of closing the solenoid valve 11 (S165) are skipped. As described above, according to this embodiment, automatic cleaning is prevented before the off-delay time elapses, and the process of closing the solenoid valve 11 is prevented from being executed when the solenoid valve 11 is closed. it can.

  On the other hand, when the off-delay time has elapsed (S110: Yes), the processing related to automatic cleaning (S115 to S125, S155 to S170) is executed. The basic processes related to automatic cleaning are a process of opening the electromagnetic valve 11 (S120), a process of continuing the state in which the electromagnetic valve 11 is open for a certain period of time (S155, S160), and a process of closing the electromagnetic valve 11 (S165). ).

  In the processing shown in FIGS. 3 and 4, when automatic cleaning is started, the off-delay flag is cleared (S115). By clearing the off-delay flag at the start of automatic cleaning, the processing does not proceed to steps S110 to S125 in the toilet bowl cleaning processing to be executed next, and the processing for starting automatic cleaning is not repeated. It will end. Therefore, it is not necessary to discharge water more than an appropriate amount, and the toilet bowl cleaning process is made efficient.

  3 and 4, the off-delay flag is cleared between step S110 and step S120, but the timing for clearing the on-delay flag can be variously changed. Clearing the on-delay flag may be performed in the toilet bowl cleaning process that is executed once in the repeated toilet bowl cleaning process, for example, immediately after step S120 or immediately after step S125. May be executed.

<Control of water discharge amount and time during automatic cleaning>
Next, processing related to control of the water discharge amount (water discharge time) in automatic cleaning will be described. The water discharge amount or water discharge time in the automatic cleaning is adjusted by the time from opening the electromagnetic valve 11 to closing it.

  3 and 4, the controller 13 confirms the open / close state of the electromagnetic valve 11 (S155), and while the electromagnetic valve 11 is open (S155: open), the valve opening time of the electromagnetic valve 11 exceeds a certain time. (S160). If the solenoid valve 11 is closed (S155: closed), it means that automatic cleaning has not started or has ended, and therefore the execution of the processing for closing the solenoid valve 11 (S160, S165) is skipped. Is done.

  Here, the controller 13 includes a counter that counts the time that has elapsed after the electromagnetic valve 11 is opened, and the storage unit 13a stores a set value that indicates a time during which the electromagnetic valve should be kept open in automatic cleaning. Yes.

  Hereinafter, the counter included in the controller 13 is referred to as “electromagnetic valve opening time counter”, and the set value stored in the storage unit 13a is referred to as “electromagnetic valve opening time set value”. In addition, this solenoid valve opening time set value is appropriately adjusted according to the processing of steps S175 to S190 described later according to the use situation of the toilet bowl cleaning device.

  The count of the electromagnetic valve opening time counter starts when the controller 13 starts the process of opening the electromagnetic valve 11 to place the toilet bowl cleaning device 1 in a water discharge state (S120). The controller 13 confirms that the water discharge continues by confirming the state of the solenoid valve 11 (S155). If the solenoid valve 11 is open (S155: open), the controller 13 opens the solenoid valve open time counter. By comparing the count value with the solenoid valve opening time set value, it is determined whether or not the solenoid valve opening time has elapsed (S160).

  Here, when the time indicated by the count value of the solenoid valve opening time counter exceeds the solenoid valve opening time (S160: Yes), the controller 13 executes a process of closing the solenoid valve 11 (S165). As a result, an amount of washing water proportional to the appropriately adjusted electromagnetic valve opening time is discharged to the toilet 2 and the toilet 2 is washed to a degree corresponding to the amount of washing water.

  On the other hand, when the time indicated by the count value of the solenoid valve opening time counter is smaller than the solenoid valve opening time (S160: No), the controller 13 performs the solenoid valve in step S165 in the repeated toilet bowl cleaning process. The process of closing 11 is skipped. Thereby, the water discharge with respect to the toilet bowl 2 is continued.

[Solenoid valve opening time adjustment processing]
In addition to the human body detection process and the automatic cleaning process described above, the controller 13 performs a process of appropriately adjusting the valve opening time of the electromagnetic valve according to the use state of the toilet bowl cleaning device (S125, S150, S175). ~ S190). By executing these processes, the water discharge amount in the automatic cleaning can be automatically adjusted to an appropriate amount suitable for the use situation. Therefore, the excess or deficiency of the water discharge amount related to the automatic cleaning can be automatically solved.

  In this embodiment, the valve opening time of the solenoid valve is adjusted according to the timing relationship between automatic cleaning and will cleaning. In particular, in the first embodiment, when the voluntary cleaning is performed within a predetermined time immediately after the automatic cleaning is performed, an adjustment is made to make the valve opening time of the electromagnetic valve longer than the valve opening time at that time. To do.

  FIG. 5 shows an example of the timing relationship between automatic cleaning and will cleaning. In this figure, when the human body detection sensor 12 detects the user's sitting, automatic cleaning is performed after the off-delay time has elapsed. In this automatic cleaning, an amount of water proportional to the time indicated by the electromagnetic valve opening time set value set in the storage unit 13a is discharged.

  After the automatic cleaning is completed, if the user finds that toilet cleaning is insufficient by visual observation or the like, the user performs the will cleaning by operating the remote controller. For example, if the time t1 (or t1 ′) from the completion of the automatic cleaning to the will cleaning is sufficiently short, it can be determined that the user has performed a remote control operation after finding that the toilet cleaning is insufficient, If the time from completion of automatic cleaning to will cleaning is sufficiently long, it can be determined that the will cleaning has been performed for another reason.

  In order to make this determination, in this embodiment, the time elapsed since the completion of the automatic cleaning is counted. Hereinafter, this time will be referred to as “time after solenoid valve closing”. In the present embodiment, the controller 13 has a counter function for counting the time after the solenoid valve is closed. This counter is started when the process of closing the solenoid valve 11 is performed in step S165. Hereinafter, this counter is referred to as a “time counter after closing”.

  The predetermined time for determining whether or not the time after the solenoid valve is closed is sufficiently short is determined empirically and experimentally, for example. Hereinafter, the predetermined time for determining whether the time after the solenoid valve is closed is sufficiently short is referred to as “under-cleaning determination time”, and the set value for the under-cleaning determination time is referred to as “under-cleaning determination time”. This will be referred to as a “set value”. The cleaning shortage determination time setting value is stored in the storage unit 13a, for example. In the present embodiment, the insufficient cleaning determination time constitutes a first predetermined time.

  Further, when the user instructs the will cleaning via the remote controller, the data indicating the execution of the will cleaning and the time after the electromagnetic valve is closed when the will cleaning is executed are stored in the storage unit 13a. Note that the timing for determining whether or not will cleaning is performed may be the timing at which the user operates the remote controller (at the time t1 in FIG. 5 has elapsed), or the timing at which intention cleaning is actually started according to the remote controller operation (see FIG. 5). 5 (when t1 ′ has elapsed).

<Checking the on-delay flag>
In the flowcharts shown in FIGS. 3 and 4, will be performed through the remote control until the next user is detected and the on-delay flag is set in the toilet cleaning process that is repeatedly performed after the automatic cleaning is completed. The presence or absence of cleaning is determined (S140). Specifically, if a human body is not detected (S100: No) and the on-delay flag is not set (S105: clearing), it is determined whether a remote control operation for instructing a will wash has been performed (S140). ).

  Here, the controller 13 refers to the storage unit 13a and determines the presence / absence of data indicating that will cleaning has been executed. If this data is stored in the storage unit 13a, it is determined that the will cleaning has been performed (S140: Yes), and the time after the electromagnetic valve is closed when the will cleaning is executed is acquired from the storage unit 13a.

  Then, if the time after closing of the electromagnetic valve acquired from the storage unit 13a is shorter than the time indicated by the setting value for insufficient washing determination time, it is determined that the time after closing of the electromagnetic valve is sufficiently short (S145: Yes). The counter that counts the number of times it is determined that the degree of cleaning of toilet bowl cleaning by automatic cleaning is insufficient is incremented by 1 (S150). This counter is realized by the controller 13 in this embodiment. Hereinafter, this counter is referred to as a “cleaning shortage counter”, and the number counted by the cleaning shortage counter is referred to as “cleaning shortage count”.

  On the other hand, if the post-electromagnetic valve closing time acquired from the storage unit 13a is longer than the time indicated by the insufficient cleaning determination time set value, it is determined that the post-electromagnetic valve closing time is not a short period (S145: No), and step S150. To skip. In addition, after execution of step S150 or when step S150 is skipped from step S145, the process proceeds to step S160. However, since the solenoid valve 11 is closed at this time, the processing of steps S160 to S170 is also skipped and the step is repeated. The processes after S100 are repeated.

  Furthermore, in this embodiment, in addition to the cleaning shortage counter for counting the number of insufficient cleaning, a counter for counting the cumulative number of automatic cleanings is provided. This counter is also realized by the controller 13 in this embodiment. Hereinafter, this counter is referred to as a “cumulative automatic cleaning frequency counter”. The count of the cumulative automatic cleaning number counter is incremented by 1 every time automatic cleaning is executed (S125).

<Adjustment of solenoid valve opening time>
Using the count values of the insufficient cleaning frequency counter and the cumulative automatic cleaning frequency counter created as described above, the controller 13 increases the number of automatic cleanings determined to be insufficient cleaning as the solenoid valve at that time increases. Adjust so that the solenoid valve opening time is longer than the opening time. Thereby, the shortage of the water discharge amount in the automatic washing can be solved, and the lack of washing can be solved.

  Conversely, the controller 13 adjusts the valve opening time of the solenoid valve 11 to be shorter than the valve opening time of the solenoid valve 11 at that time as the number of times of automatic cleaning determined to be insufficient cleaning decreases. Thereby, the excess of the water discharge amount in automatic washing | cleaning can be eliminated, and water saving can be implement | achieved.

  FIG. 6 is a diagram illustrating threshold values for determining the number of times of cleaning. In the figure, thresholds 1 and 2 are amounts corresponding to the ratio of the number of times of automatic cleaning determined to be insufficient cleaning to the cumulative number of automatic cleaning executions.

  The threshold value 1 is a threshold value for determining whether the water discharge amount is insufficient. In FIG. 6, it is determined whether or not the count value of the insufficient cleaning number counter exceeds x% of the count value of the cumulative automatic cleaning number counter. Amount. The threshold value 2 is a threshold value for determining whether the water discharge amount is excessive. In FIG. 6, whether or not the count value of the insufficient cleaning number counter is less than y% (x ≧ y) of the cumulative automatic cleaning number counter value. It is an amount for judging. In this embodiment, the threshold value 1 and the threshold value 2 are stored in the storage unit 13a.

  In FIG. 6, when [the number of insufficient cleaning / accumulated automatic cleaning] is equal to or greater than x / 100 (threshold 1), it means insufficient water discharge, and [the number of insufficient cleaning / accumulated automatic cleaning] is y / 100 (threshold 2). ) Means excessive water discharge, and when [the number of insufficient cleaning / the number of cumulative automatic cleaning] is y / 100 or more and less than x / 100, it means that the water discharge amount is appropriate.

  3 and 4, the controller 13 sequentially compares the threshold value 1 and the threshold value 2 with [the number of insufficient cleaning times / the cumulative automatic cleaning number]. As a result of this comparison, when [the number of insufficient cleaning / the number of cumulative automatic cleanings] exceeds the threshold value 1 (S175: Yes), the valve opening time of the electromagnetic valve 11 is set to that time. If the valve opening time is extended (S180) and [the number of times of insufficient cleaning / the number of cumulative automatic cleanings] is less than the threshold value 2 (S175: No, S185: Yes), the valve opening time of the solenoid valve 11 is determined at that time. If the set time is shorter than the set opening time of the solenoid valve 11 (S190), and [the number of times of insufficient cleaning / the number of cumulative automatic cleanings] is less than the threshold 1 and greater than the threshold 2 (S175: No, S185: No ), The valve opening time of the electromagnetic valve 11 is not adjusted.

  Thus, according to the use situation of the toilet bowl washing | cleaning apparatus, the amount of water discharge can be adjusted appropriately by adjusting the valve opening time of the solenoid valve 11 suitably. Furthermore, two threshold values are provided, and a dead zone is provided between them, so that when the water discharge amount is appropriate, the water discharge amount is not adjusted, and frequent fluctuations in the water discharge amount are suppressed.

  Of course, when [dead count / cumulative automatic cleaning count] exceeds a certain threshold without providing a dead zone, the opening time of the solenoid valve 11 is set as the opening time of the solenoid valve 11 set at that time. If the number of [insufficient cleaning / cumulative automatic cleaning] falls below a certain threshold, the opening time of the solenoid valve 11 is shortened from the opening time of the solenoid valve 11 set at that time. Needless to say.

(3) Second example of toilet cleaning process:
Next, a second embodiment of the toilet bowl cleaning process performed by the toilet bowl cleaning apparatus will be described with reference to the flowcharts of FIGS. The toilet cleaning process according to the second embodiment is described separately in FIGS. 7, 8, and 9, and the numbers 2 and 3 with circles indicate connection points in the flowcharts of FIGS. It is assumed that the main body of the toilet bowl cleaning process is the controller 13, and the toilet bowl cleaning process is repeatedly executed while the toilet bowl cleaning apparatus is powered on.

  7, steps S200 to S225, S230, S240 to S275, S320, and S325 shown in FIGS. 7, 8, and 9 are S100 to S125, S140, S155 to S190, S130, and S135 shown in FIGS. Therefore, the description of the human body detection process and the automatic cleaning process related to these steps will be omitted below.

  The controller 13 executes a process of appropriately adjusting the valve opening time of the electromagnetic valve according to the use state of the toilet bowl cleaning device by a method different from that of the first embodiment (S225, S235, S280 to S325). . By executing this process, the amount of water discharged in the automatic cleaning can be automatically adjusted to an appropriate amount suitable for the use situation, as in the first embodiment. Therefore, the excess or deficiency of the water discharge amount related to the automatic cleaning can be automatically solved.

  In addition, if the adjustment of the valve opening time of the electromagnetic valve 11 described in the second embodiment and the adjustment described in the first embodiment described above are used together, the effect of eliminating the excess and deficiency of the water discharge amount related to the automatic cleaning is Needless to say, it improves synergistically.

  The concept concerning adjustment of the solenoid valve according to the present embodiment will be described with reference to FIGS. In the second embodiment, the valve opening time of the electromagnetic valve is adjusted by using the usage situation of two users who sequentially use the toilet. The use situation utilized here is a case where the automatic cleaning performed after the first stool is insufficient and the user leaves without noticing the lack of automatic cleaning.

  In such a case, the second user is more likely to notice a lack of cleaning than the first user. Therefore, in this case, it is considered that the second user performs the will cleaning before adding. Of course, if the automatic cleaning performed after the first person's stool is sufficient, the second person may use it without performing will cleaning.

  Specifically, as shown in FIGS. 10 and 11, after the first user adds work, automatic cleaning is performed with a water discharge amount corresponding to the valve opening time set at that time. Executed.

  After that, as shown in FIG. 10, when the will cleaning is performed during a predetermined time t2 going back from when the next second user is detected, or as shown in FIG. The case where the will cleaning is performed before the predetermined time t3 has elapsed since the user was detected corresponds to the above-described use situation. In the present embodiment, the predetermined time t2 constitutes a second predetermined time, and the predetermined time t3 constitutes a third predetermined time.

  In the second embodiment, when such a use situation is detected, the valve opening time of the electromagnetic valve 11 is adjusted to be longer than the time set at that time. Hereinafter, a specific description will be given with reference to FIGS.

  First, as shown in FIG. 7, when the second user is performing the will cleaning by operating the remote controller before the human body detection sensor 12 detects the human body, the time when the will cleaning is performed is also stored in the storage unit. 13a. In the present embodiment, this time is also stored as the count value of the post-closing time counter. Hereinafter, this count time will be referred to as “immediately will cleaning time”.

  Specifically, the human body detection sensor 12 does not detect a human body (S200: No), and when the first automatic cleaning is completed, the off-delay flag is also cleared (S205: clearing). When the remote control cleaning is performed (S230: Yes), the count value of the time counter after closing is stored in the storage unit 13a.

  Next, as shown in FIGS. 7-9, when the human body detection sensor 12 is detecting the human body (S200: Yes), it is judged whether it is a newly detected human body (S280). For example, when a human body is detected in step S200 of the toilet bowl cleaning process that is executed immediately after the toilet bowl cleaning process in which no human body has been detected in step S200, the human body is a newly detected human body. This newly detected human body corresponds to the second user shown in FIGS.

  When a new human body is detected (S280: Yes), the count time of the time counter after closing is stored in the storage unit 13a (S285). The post-close time counter is the same as that described in the first embodiment, and the post-close time counter starts counting when the automatic cleaning is completed and the electromagnetic valve 11 is closed. Hereinafter, the count time stored in the storage unit 13a in step S285 is referred to as “second person detection time”.

  When the second person detection time is stored in the memory, it is determined whether the difference between the immediately preceding will cleaning time and the second person detection time is equal to or less than the threshold value 3 (S290). This threshold value 3 corresponds to the predetermined time t2 shown in FIG.

  When the difference between the last will washing time and the second person detection time is equal to or less than the threshold 3 (S290: Yes), the controller 13 determines that the second user has performed the will washing before using the toilet bowl. Then, the cleaning shortage counter is incremented by 1 (S295). This insufficient washing number counter is the same as the insufficient washing number counter in the above-described first embodiment, and is used for adjusting the excess or deficiency of the water discharge amount in steps S260 to S275.

  Conversely, when the difference between the immediately preceding will cleaning time and the second person detection time is greater than the threshold 3 (S290: No), the will cleaning performed during the immediately preceding will cleaning time is not the will cleaning performed by the second person. And step S295 is skipped.

  Further, when the second user performs the will cleaning by operating the remote controller after the human body detection sensor 12 detects the human body, the time when the will cleaning is performed is stored in the storage unit 13a. In the present embodiment, this time is also stored as the count value of the post-close time counter. Hereinafter, this count time is referred to as “immediately will cleaning time”.

  Specifically, when remote control cleaning is performed (S300: present), the count value of the time counter after closing is stored in the storage unit 13a (S305).

  When the immediately following will cleaning time is stored in the memory, it is determined whether the difference between the second person detection time and the immediately following will cleaning time is equal to or less than the threshold value 4. The threshold 4 is a time corresponding to the predetermined time t3 shown in FIG.

  When the difference between the second person detection time and the immediately subsequent will washing time is equal to or less than the threshold value 4 (S310: Yes), the controller 13 determines that the second user has performed the will washing before using the toilet bowl. Then, the cleaning deficiency counter is incremented by 1 (S315).

  Conversely, if the difference between the second person detection time and the immediately following will cleaning time is greater than the threshold value 4 (S310: No), the first user has added the will cleaning performed during the immediately following will cleaning time. It is determined that it is not related to the excess or deficiency of the automatic cleaning performed later, and step S315 is skipped.

  As described above, when the steps S260 to S275 similar to the steps S175 to S190 in the above-described first embodiment are performed using the insufficient washing frequency counter, the solenoid valve 11 is set in accordance with the use situation of the toilet bowl cleaning device. The valve opening time can be adjusted appropriately, and the water discharge amount can be adjusted appropriately.

  Note that the present technology is not limited to the above-described embodiments, and includes configurations in which the respective configurations disclosed in the above-described embodiments are mutually replaced or combinations are changed, known technologies, and the above-described embodiments and modifications. Also included are configurations in which the configurations disclosed in 1 are replaced with each other or combinations are changed. Needless to say, the technical scope of the present invention is not limited to the above-described embodiments, but extends to the matters described in the claims and equivalents thereof.

DESCRIPTION OF SYMBOLS 1 ... Toilet washing apparatus, 2 ... Toilet bowl, 2a ... Toilet seat, 3 ... Water supply pipe, 4 ... Stop cock, 5 ... Inflow pipe, 6 ... Outflow pipe, 10 ... Apparatus main body, 11 ... Electromagnetic valve, 12 ... Human body detection sensor , 12a ... detection window, 13 ... controller, 13a ... storage unit, 14 ... remote control device, 15 ... casing, 16 ... water inlet, 17 ... water outlet, 18 ... piston valve, 18a ... packing, 18b ... communication path, 19 ... Back pressure chamber, 20 ... secondary side water channel, 21 ... bypass channel, 22 ... transmitter, 23 ... receiver, 24 ... washing switch

Claims (4)

A solenoid valve for opening and closing a water supply channel for supplying flush water to the toilet;
A detection unit for detecting a toilet user;
An operation unit for accepting user operations;
When the detection unit detects the end of use of the toilet by the user, the first control automatically opens the electromagnetic valve to wash the toilet, and when a predetermined operation is performed on the operation unit, the electromagnetic valve A control unit for performing a second control for opening and cleaning the toilet;
A toilet bowl cleaning device comprising:
When the control unit performs the second control within a first predetermined time from the first control, the control unit performs a valve opening time of the electromagnetic valve related to the first control performed thereafter thereafter. The toilet cleaning device, wherein the opening time of the electromagnetic valve according to the first control is longer. A solenoid valve for opening and closing a water supply channel for supplying flush water to the toilet;
A detection unit for detecting a toilet user;
An operation unit for accepting user operations;
When the detection unit detects the end of use of the toilet by the user, the first control automatically opens the electromagnetic valve to wash the toilet, and when a predetermined operation is performed on the operation unit, the electromagnetic valve A control unit for performing a second control for opening and cleaning the toilet;
A toilet bowl cleaning device comprising:
After performing the first control, the control unit performs the second control within a second predetermined time immediately before the detection unit detects the next user or within a third predetermined time immediately after. When performed, the opening time of the electromagnetic valve related to the first control performed thereafter is made longer than the opening time of the electromagnetic valve related to the first control performed previously. Toilet bowl cleaning device. A solenoid valve for opening and closing a water supply channel for supplying flush water to the toilet;
A detection unit for detecting a toilet user;
An operation unit for accepting user operations;
When the detection unit detects the end of use of the toilet by the user, the first control automatically opens the electromagnetic valve to wash the toilet, and when a predetermined operation is performed on the operation unit, the electromagnetic valve A control unit for performing a second control for opening and cleaning the toilet;
A toilet bowl cleaning device comprising:
The control unit performs the second control performed within a first predetermined time from the first control and the first control, and immediately before the detection unit detects the next user. When the number of occurrences of at least one of the second control performed within the second predetermined time or the third predetermined time immediately after the second predetermined time is equal to or greater than a predetermined ratio with respect to the number of occurrences of the first control The toilet valve opening time of the electromagnetic valve related to the first control performed thereafter is longer than the valve opening time of the electromagnetic valve related to the first control performed before that time. Cleaning device.   The control unit detects the next user after performing the second control performed within the first predetermined time from the first control or the first control. When the number of occurrences of the second control performed within the second predetermined time immediately before or within the third predetermined time immediately after is less than a predetermined ratio with respect to the number of occurrences of the first control The valve opening time of the electromagnetic valve related to the first control performed thereafter is shorter than the valve opening time of the electromagnetic valve related to the first control performed before that time. Toilet bowl cleaning device.

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