JP2021134643A - urinal - Google Patents

Abstract

To inhibit the adhesion and accumulation of urinary calculus in a drainage pipe.SOLUTION: A urinal according to an embodiment is connected to a drainage pipe of a building via a fixture drain pipe, and comprises a bowl part, a trap part, a water discharge unit, a use detection unit, and a control unit. The bowl part receives a user's urine. The trap part forms a pool of water in the bowl part. The water discharge unit discharges wash water toward the bowl part to perform a drainage operation on the drainage pipe. The use detection unit detects the use of the urinal. The control unit controls the water discharge unit to execute a main cleaning mode in which the wash water is discharged after the urinal is used, and executes an equipment protection cleaning mode in which the wash water is discharged at a predetermined timing. The control unit calculates a cumulative usage time of the urinal and executes the equipment protection cleaning mode according to the cumulative usage time at a predetermined time interval.SELECTED DRAWING: Figure 5

Description

The disclosed embodiment relates to a urinal.

Conventionally, in public toilets for men, urinals may be installed separately from the urinals. In this case, the urinal is connected to the drainage pipe of the building via the plumbing lamp. The urinal includes, for example, a bowl part that receives the user's urine, a trap part that forms a pool of water in the bowl part, and a water discharge part that discharges wash water toward the bowl part to perform a drainage operation on the drainage pipe. , A use detection unit that detects the use of this urinal on the human body in front of the urinal, and a control unit that controls the water discharge unit.

In addition to the main washing mode for draining urine from the trap part after use (urination) by the user, the urinal discharges washing water toward the bowl part at predetermined time intervals of the day. The equipment protection cleaning mode, which is a fixed-time cleaning, may be executed (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-061070

However, in the conventional urinal as described above, for example, when the amount of urine discharged to the drain pipe that causes the user to be temporarily congested with respect to the urinal becomes excessive, the equipment protection is a fixed-time cleaning. Even if cleaning is performed, urine stains in the drain pipe cannot be removed, and urine stones tend to adhere or accumulate in the drain pipe. That is, the conventional urinal has room for improvement in suppressing the adhesion and accumulation of urinary stones in the drainage pipe.

One aspect of the embodiment is made in view of the above, and an object of the present invention is to provide a urinal capable of suppressing adhesion and accumulation of urinary stones in a drainage pipe.

The urinal according to one aspect of the embodiment is a urinal connected to a drainage pipe of a building via an instrument drainage pipe, and forms a pool portion for receiving user's urine and a pool portion in the bowl portion. Control the trap unit, the water discharge unit that discharges wash water toward the bowl unit to perform a drainage operation on the drain pipe, the use detection unit that detects the use of the urinal, and the water discharge unit. The urinal is provided with a control unit that executes the main cleaning mode of discharging the urinal after use and executes the equipment protection cleaning mode of discharging the urinal at a predetermined timing, and the control unit is a cumulative total of the urinals. The usage time is calculated, and the equipment protection cleaning mode is executed according to the cumulative usage time at a predetermined time interval.

According to such a configuration, the amount of urine discharged to the drainage pipe can be estimated from the cumulative usage time of the urinal. Then, since the equipment protection cleaning is performed according to the estimated amount of urine, that is, the amount of urine discharged to the drainage pipe, it is possible to perform cleaning in consideration of the state of urine contamination in the drainage pipe. As a result, for example, even if the number of urinal users temporarily increases and the situation becomes congested and the amount of urine discharged to the drainage pipe becomes excessive, urine stones may adhere or accumulate in the drainage pipe. It can be suppressed.

Further, in the above-mentioned urinal, the control unit controls the water discharge unit to execute a pre-cleaning mode in which washing water is discharged immediately before the use of the urinal, and according to the cumulative usage time at a predetermined time interval. The amount of washing water in the pre-washing mode is changed.

According to such a configuration, since the amount of cleaning water in the pre-cleaning mode is changed according to the amount of urine discharged to the drainage pipe, it is possible to perform cleaning in consideration of the state of urine contamination in the drainage pipe. As a result, for example, even if the number of urinal users temporarily increases and the situation becomes congested and the amount of urine discharged to the drainage pipe becomes excessive, urine stones may adhere or accumulate in the drainage pipe. It can be suppressed.

Further, in the above-mentioned urinal, the control unit increases the amount of washing water in the pre-washing mode when the cumulative usage time at a predetermined time interval becomes equal to or longer than a preset predetermined time.

According to such a configuration, it is estimated that the amount of urine discharged to the drain pipe has reached the amount to be washed by detecting that the cumulative usage time of the urinal has exceeded the set time. Can be done. Then, in this case, in order to increase the amount of washing water in the pre-washing mode, for example, even if the equipment protection cleaning such that the urinals are continuously used by many users cannot be performed, the condition of urine stain in the drain pipe. It is possible to carry out cleaning in consideration of. As a result, for example, even if the number of urinal users temporarily increases and the situation becomes congested and the amount of urine discharged to the drainage pipe becomes excessive, urine stones may adhere or accumulate in the drainage pipe. It can be suppressed.

Further, in the above-mentioned urinal, when the control unit does not use the urinal during a predetermined securing time in a state where the cumulative usage time at a predetermined time interval is equal to or longer than a preset predetermined time. Executes the equipment protection cleaning mode and increases the amount of cleaning water in the pre-cleaning mode at the time of use when the urinal is used during the securing time.

According to such a configuration, when the amount of urine discharged to the drain pipe reaches the amount to be washed, if a predetermined securing time can be secured, equipment protection cleaning is performed, and if the predetermined securing time cannot be secured. That is, when the user uses the urinal within the predetermined securing time, the amount of pre-washing water at the time of use is increased, so that the cleaning can be performed in consideration of the condition of urine stain in the drain pipe. As a result, for example, even if the number of urinal users temporarily increases and the situation becomes congested and the amount of urine discharged to the drainage pipe becomes excessive, urine stones may adhere or accumulate in the drainage pipe. It can be suppressed.

Further, in the above-mentioned urinal, the control unit sets the equipment protection cleaning mode as a first cleaning mode using cleaning water and a second cleaning mode executed after the first cleaning mode and using sterilized water. The control unit prohibits the second cleaning mode within a predetermined prohibition time after executing the first cleaning mode.

According to such a configuration, when the equipment protection cleaning mode has a first cleaning mode with cleaning water and a second cleaning mode with disinfecting water after the first cleaning mode is executed, after the first cleaning. Since the second washing is not performed immediately, it is possible to prevent the sterilized water from being washed away, and it is possible to suppress a decrease in the sterilization effect.

Further, in the above-mentioned urinal, the use detection unit is a human body detection unit that detects the user of the urinal, and the control unit calculates the cumulative usage time based on the detection result of the human body detection unit. do.

According to such a configuration, the cumulative usage time of the urinal can be easily obtained, and as a result, the amount of urine discharged to the drainage pipe can be easily estimated.

According to one aspect of the embodiment, adhesion and accumulation of urinary stones in the drainage pipe can be suppressed.

FIG. 1 is an explanatory diagram of a urinal system including a urinal according to the first embodiment. FIG. 2 is a schematic side sectional view showing an example of the urinal according to the first embodiment. FIG. 3 is a block diagram showing an example of the internal structure of the automatic cleaning unit of the urinal according to the first embodiment. FIG. 4 is a timing chart showing an operation example of the main cleaning mode of the urinal according to the first embodiment. FIG. 5 is a timing chart showing an operation example of the equipment protection cleaning mode of the urinal according to the first embodiment. FIG. 6 is a flowchart showing an example of the processing procedure of the equipment protection cleaning mode of the urinal according to the first embodiment. FIG. 7 is a timing chart showing an operation example of the pre-cleaning mode of the urinal according to the second embodiment. FIG. 8 is a flowchart showing an example of the processing procedure of the pre-cleaning mode of the urinal according to the second embodiment. FIG. 9 is a flowchart showing an example of the processing procedure of the equipment protection cleaning mode and the pre-cleaning mode of the urinal according to the third embodiment. FIG. 10 is a flowchart showing an example of the processing procedure of the equipment protection cleaning prohibition mode of the urinal according to the fourth embodiment.

Hereinafter, embodiments of the urinals disclosed in the present application will be described in detail with reference to the accompanying drawings. The present invention is not limited to the embodiments shown below.

<First Embodiment>
First, the urinal 1 system including the urinal 10 according to the first embodiment will be described with reference to FIG. FIG. 1 is an explanatory diagram of a urinal system 1 including the urinal 10 according to the first embodiment. Note that FIG. 1 schematically shows the urinal system 1. As shown in FIG. 1, the urinal system 1 includes a urinal 10, an instrument drain pipe 50, and a drain pipe 60.

For example, a plurality of urinals 10 are installed side by side on the front side of the wall surface 2 (see FIG. 2) of the toilet room, or a single urinal 10 is installed. The fixture drain pipe 50 is provided on the back side of the wall surface 2 on which the urinal 10 is installed when the urinal 10 is a wall-mounted type attached to the front side of the wall surface 2. In the case of the floor-standing type in which the urinal 10 is directly arranged on the floor surface 3, the equipment drain pipe 50 is provided below the floor surface 3.

One end of the appliance water pipe 50 is connected to the urinal 10 and the other end is connected to the drainage pipe 60 of the building. The appliance drainage pipe 50 causes the drainage flowing from the urinal 10 to flow out to the drainage pipe 60. "Drainage" refers to urine, washing water (including functional water such as sterilized water), washing water containing urine, etc. discharged from the urinal 10.

When the urinal 10 is a wall-mounted type, the drainage pipe 60 is provided on the back side of the wall surface 2 on which the urinal 10 is installed. The drainage pipe 60 may be provided below the floor surface 3 depending on the configuration of the fixture drainage pipe 50. When the urinal 10 is a floor-standing type, the drainage pipe 60 is provided below the floor surface 3. The drainage pipe 60 extends laterally while gently sloping down, for example. That is, the drainage pipe 60 is arranged so as to be slightly inclined from the horizontal. In the following, the ascending side of the slope of the drainage pipe 60 will be referred to as an “upstream side”, and the descending side will be referred to as a “downstream side”.

The drainage pipe 60 is connected to a vertical drainage pipe (not shown) on the downstream side. The drainage pipe 60 causes the drainage flowing from the fixture drainage pipe 50 to flow out to the vertical drainage pipe. In the drainage pipe 60, the drainage flows toward the downstream side as shown by the arrow A in the figure.

In the urinal system 1 shown in FIG. 1, each of the plurality of urinals 10 is connected to the drain pipe 60 via the equipment drain pipe 50. Further, in the urinal system 1 shown in FIG. 1, a plurality of urinals 10 are arranged side by side at predetermined intervals along the extending direction of the drainage pipe 60.

Next, the urinal 10 according to the first embodiment will be described with reference to FIGS. 2 and 3. FIG. 2 is a schematic side sectional view showing an example of the urinal 10 according to the first embodiment. FIG. 3 is a block diagram showing an example of the internal structure of the automatic cleaning unit 20 of the urinal 10 according to the first embodiment.

As shown in FIG. 2, the urinal 10 includes a toilet body 11 and an automatic cleaning unit 20. In the example shown in FIG. 2, the urinal 10 is a wall-mounted type and is an on-floor pipe, but the present invention is not limited to this, and the equipment drain pipe 50 is piped to the underfloor and the drain pipe 60 is piped under the floor. The urinal 10 may be placed on the floor.

The urinal 10 is, for example, a water-saving type that is washed with a washing water amount of 0.5 to 2.0 L (preferably 0.5 to 1.0 L) at the time of washing the toilet bowl (main washing described later). In the following, the front side of the urinal 10 is defined as "front", the back side is defined as "rear", and the urinal 10 is defined as "left" on the left side and "right" on the right side when viewed from the front side. "Upper" is the upper side in the vertical direction, and "lower" is the lower side in the vertical direction.

The toilet bowl body 11 is made of pottery. The toilet bowl body 11 is not limited to this, and may be made of resin or a combination of pottery and resin. The toilet bowl main body 11 includes a storage portion 12, a bowl portion 13, a drain port portion 14, a trap portion 15, and a drainage device connecting portion 16. The storage portion 12 is formed at the upper end portion of the toilet bowl main body 11. The storage unit 12 serves as a space for storing the automatic cleaning unit 20, which will be described later.

The bowl portion 13 forms a bowl surface extending downward from the front surface 12a of the storage portion 12. The bowl portion 13 receives the user's urine on the bowl surface. The drainage port portion 14 has a drainage port 14a formed at the bottom of the bowl portion 13, and can collect urine from the bowl portion 13, washing water (including functional water such as sterilized water), washing water containing urine, and the like. Discharge to the trap unit 15.

Trap unit 15 at the downstream side of the drainage port portion 14, for example, to form a P-shaped trap, to form the accumulated water W _T in the bowl portion 13. Trap portion 15 is to ensure water sealing by accumulated water W _T.

The drainage device connecting portion 16 is formed on the downstream side of the trap portion 15. A drainage flange 17 is connected to the drainage device connection portion 16. An appliance drainage pipe 50 is connected to the drainage flange 17. The drainage flange 17 is connected to the drainage device connecting portion 16 with a sealing material (not shown) interposed therebetween. As described above, the fixture drainage pipe 50 extends from the front side to the back side of the wall surface 2 and is connected to the drainage pipe 60.

The automatic cleaning unit 20 cleans the toilet bowl main body 11 (the bowl surface of the bowl portion 13). As shown in FIG. 2 and as described above, the automatic cleaning unit 20 is housed in the storage unit 12 at the upper end of the toilet bowl body 11. The storage portion 12 is closed by a lid 18 which is a separate body from the toilet bowl main body 11. Further, the front surface 12a of the storage portion 12 is inclined toward the rear.

As shown in FIG. 3, the automatic cleaning unit 20 housed in such a storage unit 12 includes a water supply pipe 21, a water stop valve 22, a valve unit 23, and a water discharge unit 24.

The water supply pipe 21 supplies wash water from a water supply source (not shown) such as a water supply. The water stop valve 22 is connected to the water supply pipe 21 to supply and stop the washing water to the valve unit 23 described later. The valve unit 23 is provided on the downstream side of the water stop valve 22.

The water discharge unit (hereinafter referred to as a spreader) 24 discharges the washing water supplied from the valve unit 23 and the functional water (electrolyzed water) supplied from the electrolyzed water generation unit 37, which will be described later, toward the bowl unit 13. The spreader 24 discharges wash water or functional water (electrolyzed water) toward the bowl portion 13 to perform a drainage operation on the drainage pipe 60.

The valve unit 23 includes a branch portion 31, a first constant flow rate valve 32, a main water discharge flow path solenoid valve 33, a second constant flow rate valve 34, an electrolytic water flow path solenoid valve 35, a check valve 36, and electrolysis. A water generation unit 37 is provided.

The branching portion 31 branches the water supply pipe 21 into the main water discharge flow path 21a and the electrolytic water flow path 21b. The first constant flow rate valve 32 is provided in the main water discharge flow path 21a. The main water discharge flow path solenoid valve 33 is provided on the downstream side of the first constant flow rate valve 32 in the main water discharge flow path 21a.

The second constant flow rate valve 34 is provided in the electrolyzed water flow path 21b. The electrolyzed water flow path electromagnetic valve 35 is provided on the downstream side of the second constant flow valve 34 in the electrolyzed water flow path 21b, and discharges and stops the discharge of the washing water containing the functional water (electrolyzed water). The check valve 36 is provided on the downstream side of the electrolytic water flow path solenoid valve 35 in the electrolytic water flow path 21b.

The electrolyzed water generation unit 37 is arranged immediately upstream of the spreader 24 so that electrolyzed water, which is functional water, can be generated and quickly discharged from the spreader 24. The check valve 36 described above is located on the upstream side of the electrolyzed water generation unit 37 in order to prevent the backflow of the electrolyzed water.

The electrolyzed water generation unit 37 has a configuration in which hypochlorous acid is generated from chloride ions in the washing water to be electrolyzed water at the electrode of the electrolyzed water generation unit 37, and the generated electrolyzed water is discharged as the washing water. .. The electrolyzed water is water containing a component that produces hypochlorous acid from chloride ions in the washing water, and has a sterilizing effect and a growth suppressing effect on urolithiasis and bacteria. Hereinafter, such electrolyzed water is referred to as "sterilized water".

In the spreader 24, a use detection unit (in this embodiment, it is assumed that the presence or absence of a user in front of the urinal 10 is detected, hereinafter referred to as a human body detection sensor) 25 for detecting the use of the urinal 10 is a bowl portion. The front side of 13 is mounted so that it can be detected. The human body detection sensor 25 detects the presence or absence of a user of the urinal 10.

In the present embodiment, the urinal 10 uses a human body detection sensor that detects the presence or absence of a user of the urinal 10, but the use detection unit 25 urinates (urine toward the bowl portion 13). It may be possible to detect the movement of the urinal (such as the state of urine mixed in the trap portion 15). In this case, for example, a photoelectric (light amount, distance) sensor, a microwave sensor, an ultrasonic sensor, an electrostatic sensor, or the like can be used. can.

The automatic cleaning unit 20 includes a control unit 40. The control unit 40 controls the spreader 24 via the main water discharge flow path solenoid valve 33 or the like based on the detection result of the human body detection sensor 25 (detection signal transmitted from the human body detection sensor 25), a predetermined program, or the like.

Specifically, the control unit 40 controls the opening and closing of the main water discharge flow path solenoid valve 33 based on the detection signal from the human body detection sensor 25 and a predetermined program, and discharges the washing water from the spreader 24. When the main water discharge flow path solenoid valve 33 is open, the amount of wash water discharged from the spreader 24 (wash water amount) is determined by the opening time of the main water discharge flow path solenoid valve 33.

The spreader 24 can also discharge the washing water from both the main water discharge flow path 21a and the electrolytic water flow path 21b so that the instantaneous flow rate of the washing water to be discharged can be changed. The instantaneous flow rate is the flow rate per unit time.

Further, the spreader 24 may have another water discharge flow path mechanism added separately from the main water discharge flow path 21a so that the instantaneous flow rate of the flush water to be discharged can be changed. In this case, the spreader 24 is a value obtained by totaling the amount of water discharged from the main water discharge channel 21a and the instantaneous flow rate of water discharged, as well as the amount of water discharged from other water discharge channels and the instantaneous flow rate of water discharged. You can spit water with. Further, it is possible to cope with this by providing a mechanism for changing the instantaneous flow rate of water discharge in the main water discharge flow path 21a.

Returning to FIG. 3, the control unit 40 controls the opening and closing of the electrolyzed water flow path solenoid valve 35 based on the detection signal from the human body detection sensor 25 and a predetermined program, operates the electrolyzed water generation unit 37, and removes the generated water. The bacterial water is discharged from the spreader 24 toward the bowl portion 13.

Here, for example, the bowl portion 13 forms an arc surface having a relatively large radius of curvature at the upper portion and an arc surface having a relatively small radius of curvature at the lower portion in the horizontal direction. The bowl portion 13 is formed in a bowl shape so that the bottom portion is curved and converges. The spreader 24 is provided at a height position above the center on the left-right central axis of the bowl portion 13.

Therefore, in each cleaning mode such as the main cleaning mode described later, the cleaning water discharged from the spreader 24 is temporarily placed in the vicinity of the drain port 14a which is the inlet of the trap portion 15 in the bottom portion after cleaning the bowl portion 13. specifically the reservoir, acts to exert pressure on the reservoir water W _T of the trap portion 15 (the height from the surface of normal pooled water W _T) temporarily accumulated water head height of the wash water, the trap While replacing the inside of the portion 15, the trap portion 15 discharges the water to the equipment drain pipe 50 and the drain pipe 60.

As shown in FIG. 2, in the drainage port portion 14, the perforated plate 19 is arranged on the upstream side, and the drainage port 14a described above is formed on the downstream side. Further, as described above, the drainage device connecting portion 16 is provided on the downstream side of the trap portion 15. Although the drainage flange 17 is connected to the drainage fixture connection portion 16, the drainage fixture drainage pipe 50 may be directly connected to the drainage fixture connection portion 16 by omitting the drainage flange 17.

Further, the control unit 40 uses a RAM (Random Access Memory) as a work area for a program stored in a storage unit (not shown) by, for example, a CPU (Central Processing Unit) or an MPU (Micro Processing Unit). It is realized by executing. The control unit 40 can also be realized by an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).

The control unit 40 controls each unit based on various input signals. A storage unit (not shown) is realized by, for example, a semiconductor memory element such as a RAM or a flash memory. In this embodiment, for example, a RAM in the microcomputer stores various settings and field data in an external EEPROM (Electrically Erasable Programmable Read Only Memory) or the like.

As described above, the control unit 40 controls the discharge of the washing water toward the bowl portion 13 by the spreader 24. As an automatic cleaning of the urinal 10, the control unit 40 executes a main cleaning mode in which cleaning water is discharged to clean the bowl portion 13 after the user uses the urinal 10. Further, the control unit 40 discharges cleaning water to clean the fixture drain pipe 50 and the drain pipe 60 at predetermined time intervals (predetermined timing) in the day as automatic cleaning of the urinal 10, which will be described later. Perform equipment protection cleaning mode.

The control unit 40 discharges cleaning water immediately before the user uses the urinal 10 as an automatic cleaning of the urinal 10, a pre-cleaning mode described later, and a first cleaning mode described later in the equipment protection cleaning mode. After executing the above, a second cleaning mode or the like, which will be described later, may be executed in which the disinfectant water generated by the electrolytic water generation unit 37 is discharged.

Next, the automatic cleaning (main cleaning) of the urinal 10 according to the first embodiment will be described with reference to FIG. FIG. 4 is a timing chart showing an operation example of the main cleaning mode of the urinal 10 according to the first embodiment, and FIG. 4A shows a user and determines that the urinal 10 has been used. The timing of turning on / off of human body detection and toilet bowl cleaning in the case is shown, and FIG. 4 (b) shows the timing of turning on / off of human body detection and toilet bowl cleaning when it is not effective detection such as temporarily detecting the passage of the user. Is shown.

As shown in FIG. 4A, the position of the user is placed in the detection area by the human body detection sensor 25 (human body detection is on), and the human body is detected in the detection area for a predetermined fixed time _TA1 (for example, 5 seconds) or more. When the above is performed, the control unit 40 determines that the urinal 10 has been used when approaching the urinal 10 based on the detection signal from the human body detection sensor 25. The control unit 40 makes various determinations such as whether or not the urinal 10 has been used, for example, by a determination unit (not shown).

When the position of the user is out of the detection area by the human body detection sensor 25 (human body detection is off), the control unit 40 finishes urinating by the user based on the detection signal from the human body detection sensor 25 (small). (Away from the urinal 10) is determined. The control unit 40 executes the main cleaning mode when the human body detection is turned off. In this cleaning mode, the wash away the contamination due to urine bowl surface, to discharge the accumulated water W _T of urine concentration becomes higher from the trap portion 15 while replacing the inside of the trap portion 15 in the wash water.

As shown in FIG. 4B, even if the position of the user is within the detection area by the human body detection sensor 25 (even if the human body detection is turned on), the detection time by the human body detection sensor 25 is a predetermined fixed time. If less than T _A1, the control unit 40, for example, it determines that is not a valid detection, such as by passing through the detection area humans.

Next, the automatic cleaning (equipment protection cleaning) of the urinal 10 according to the first embodiment will be described with reference to FIGS. 5 and 6. FIG. 5 is a timing chart showing an operation example of the equipment protection cleaning mode of the urinal 10 according to the first embodiment. FIG. 6 is a flowchart showing an example of a processing procedure of the equipment protection cleaning mode of the urinal 10 according to the first embodiment.

In the first embodiment, in addition to the above-mentioned main cleaning mode, an equipment protection cleaning mode, which is a fixed-time cleaning, is executed for the purpose of suppressing the generation of urinary stones in the drainage pipe 60 into which the drainage from the trap portion 15 flows. In the equipment protection cleaning mode, as described above, the control unit 40 controls the spreader 24 to discharge the cleaning water toward the bowl unit 13 at a predetermined timing.

5, the control unit 40 executes a facility protection washing mode at a predetermined timing for each predetermined time T _B. The control unit 40, based on the detection result of the human body detection sensor 25, calculates the cumulative usage time T _C of the urinal 10. In this case, the control unit 40, by going adding the time T _i of the basis of the human body detection on-time of the human body detection sensor 25 "(small toilet bowl 10) there used", the accumulated use time T _{C (=} ΣT _i ) is calculated.

Control unit 40, between the equipment protection and cleaning equipment protection washing, according to the accumulated usage time T _C for a predetermined time T _D intervals, to perform the equipment protection cleaning mode. More specifically, the control unit 40 becomes equal to or larger than the cumulative use time T _C is preset predetermined setting time T _{E (see} FIG. 6) in the predetermined time T _D interval (T _C ≧ T _E), Equipment Protection Perform a wash mode. The control unit 40, when the accumulated use time _{T C} for a predetermined time _{T D} interval exceeds the set time _{T E (T C> T E} ) may perform equipment protection cleaning mode.

In this case, as shown in FIG. 6, the control unit 40 determines whether the predetermined time T _B which is set in advance from running last facility protection cleaning mode has elapsed (step S101). Control unit 40, if it is determined that the predetermined time _{T B} has elapsed in the process of step S101 (step S101Yes), executes the equipment protection cleaning mode (step S102). The control unit 40 makes a determination in a process such as step S101 in, for example, a determination unit (not shown).

Control unit 40, when judging that has not passed the predetermined time _{T B} in the process of step S101 (step S101: No), calculates the cumulative usage time _{T C} of the urinal 10 (step S103). Control unit 40, the cumulative operating time within a predetermined time _{T D T C} is determined whether more than a predetermined set time _{T E} (step S104).

Control unit 40, the cumulative operating time _{T C} within a predetermined time _{T D} in the process of step S104 determines that the predetermined set time _{T E} above (step S104: Yes), if no predetermined time elapses _{T B} Also, the equipment protection cleaning mode is executed (step S105).

The control unit 40, when completing the process of step S105, the process returns to step S101, starts to determine whether the predetermined time T _B has elapsed. Control unit 40, for the cumulative use time T _C after step S105 is calculated at this facility protection washing mode after, also based on the equipment protection washing mode for the start time of the predetermined time T _D.

The control unit 40, the cumulative operating time within a predetermined time _{T D T C} is determined less than the predetermined set time _{T E} in the process of step S105 (step S104: No), for example, the process returns to step S101 continues to determine whether or not a predetermined time T _B has elapsed since the last ran equipment protection cleaning mode.

Thus, according to the first embodiment, it is possible to estimate the urine volume discharged in the drainage pipe 60 from the cumulative use time T _C of the urinal 10. Then, according to the estimated amount of urine, that is, the amount of urine discharged to the drainage pipe 60, the equipment protection cleaning is performed even if it is not the original timing of the equipment protection cleaning. It is possible to perform cleaning in consideration of the situation. As a result, for example, even if the number of users of the urinal 10 temporarily increases and the situation becomes congested and the amount of urine discharged to the drain pipe 60 becomes excessive, urine stones adhere to the drain pipe 60. And accumulation can be suppressed.

Further, since the control unit 40 calculates the cumulative usage time T _C based on the detection result of the human body detection sensor 25, facilitates the cumulative use time T _C of the urinal 10 without using a means such as measured operating time Can be asked for. Thereby, the amount of urine discharged to the drainage pipe 60 can be easily estimated.

<Second Embodiment>
Next, the urinal 10 according to the second embodiment will be described with reference to FIGS. 7 and 8. FIG. 7 is a timing chart showing an operation example of the pre-cleaning mode of the urinal 10 according to the second embodiment. FIG. 8 is a flowchart showing an example of the processing procedure of the pre-cleaning mode of the urinal 10 according to the second embodiment. The second embodiment is different from the first embodiment in that the control unit 40 performs pre-cleaning.

In the second embodiment, pre-cleaning is performed immediately before the user uses the urinal 10. The main purpose of the pre-cleaning is to wet the bowl surface in order to prevent urine from adhering to the surface (bowl surface) of the bowl portion 13. For this reason, the amount of standard wash water for pre-wash is less than the main wash performed after pre-wash. That is, the time for discharging the washing water from the spreader 24 is short.

As shown in FIG. 7, when the position of the user is within the detection area by the human body detection sensor 25 (human body detection is on) and the human body is detected for a predetermined time _TA2 (for example, 2 seconds) or more in the detection area. Based on the detection signal from the human body detection sensor 25, the control unit 40 determines that the user is the user of the urinal 10 that has approached the urinal 10. The control unit 40 executes the pre-cleaning mode after a _{predetermined time TA2 has} elapsed since the human body detection was turned on.

When the position of the user is out of the detection area by the human body detection sensor 25 (human body detection is off), the control unit 40 finishes urinating by the user based on the detection signal from the human body detection sensor 25 (small). (Away from the urinal 10) is determined. The control unit 40 executes the main cleaning mode when the human body detection is turned off.

In the second embodiment as well, as in the first embodiment, the detection time by the human body detection sensor 25 even if the position of the user is within the detection area by the human body detection sensor 25 (even if the human body detection is turned on). When the predetermined time (pre-cleaning confirmation time) _TA2 is not reached, the control unit 40 determines that the detection is not effective, for example, when a person has just passed through the detection area.

The control unit 40 changes between the equipment protection and cleaning equipment protection washing, according to the accumulated usage time T _C for a predetermined time T _D intervals, water of the wash water before the time washing (hereinafter, referred to as pre-cleaning water) do. More specifically, the control unit 40 becomes equal to or larger than the cumulative use time T _C is preset predetermined setting time T _{E (see} FIG. 8) in a predetermined time T _D intervals, increasing the pre-wash water. The control unit 40, when the accumulated use time _{T C} for a predetermined time _{T D} interval exceeds the set time _{T E (T C> T E} ) may be increased to pre-cleaning water.

In this case, as shown in FIG. 8, the control unit 40 calculates the cumulative usage time T _C of the urinal 10 from the detection result of the human body detection sensor 25 (step S201), the accumulated use time T within the predetermined time T _{D C} determines whether more than a predetermined set time _{T E} (step S202). The control unit 40 makes a determination in a process such as step S201 in, for example, a determination unit (not shown).

Control unit 40, the cumulative operating time within a predetermined time _{T D T C} is determined as equal to or higher than a predetermined time _{T E} in the process of step S202 (step S202: Yes), the presence or absence of a user by the human body detecting sensor 25 If it is determined (step S203) and it is determined that there is a user (step S203: Yes), that is, when the next user is detected, the pre-washing water amount is increased (step S204) and the pre-washing mode is executed (step S205). ).

The control unit 40, when completing the process of step S205, for example, the process returns to step S201, starts the calculation of the cumulative use time _{T C.} Control unit 40 calculates in the pre-wash mode after about cumulative operating time T _C after step S205, also based on the pre-cleaning mode for the start time of the predetermined time T _D.

Further, when the control unit 40 determines in the process of step S203 that there is no user (including temporary detection) (step S203: No), for example, the control unit 40 repeats the process of step S203 until it is determined that there is a user. ..

Control unit 40, the cumulative operating time within a predetermined time _{T D T C} is determined less than the predetermined set time _{T E} in the process of step S202 (step S202: No), the presence or absence of a user by the human body detecting sensor 25 If it is determined (step S206) and it is determined that there is a user (step S206: Yes), the pre-cleaning mode is executed (step S208) with the pre-washing water amount as the standard (step S207).

The control unit 40, when it is determined that no user (including temporary detection) in the process of step S206 (step S206: No), for example, the process returns to step S202, the accumulated use time _{T C} calculated while continuing the cumulative use time T _C continues to determine whether the set time T _E or within a predetermined time T _D.

As described above, according to the second embodiment, since the amount of pre-washing water is changed according to the amount of urine discharged to the drainage pipe 60, it is possible to perform cleaning in consideration of the state of urine contamination in the drainage pipe 60. .. As a result, for example, even if the number of users of the urinal 10 temporarily increases and the situation becomes congested and the amount of urine discharged to the drain pipe 60 becomes excessive, urine stones adhere to the drain pipe 60. And accumulation can be suppressed.

Moreover, by detecting that the cumulative operating time T _C of the urinal 10 is equal to or greater than the set time T _E, to estimate that the amount of urine discharged into the drain pipe 60 reaches the amount to carry out the washing Can be done. Then, in this case, in order to increase the amount of pre-washing water, for example, even if the equipment protection cleaning such that the urinal 10 is continuously used by a large number of users cannot be performed, the situation of urine contamination in the drainage pipe 60 may occur. Careful cleaning can be performed. As a result, for example, even if the number of users of the urinal 10 temporarily increases and the situation becomes congested and the amount of urine discharged to the drain pipe 60 becomes excessive, urine stones adhere to the drain pipe 60. And accumulation can be suppressed.

<Third Embodiment>
Next, the urinal 10 according to the third embodiment will be described with reference to FIG. FIG. 9 is a flowchart showing an example of the processing procedure of the equipment protection cleaning mode and the pre-cleaning mode of the urinal 10 according to the third embodiment. Incidentally, the third embodiment, the control unit 40, first, second embodiment described above in that perform any of the equipment protection washing or pre-washing water increases when the accumulated usage time T _C is equal to or more than time T _E setting The configuration is different from the form.

In the third embodiment, the control unit 40 performs a facility protection washed with predetermined timing every predetermined time T _B. The control unit 40, based on the detection result of the human body detection sensor 25, calculates the cumulative usage time T _C of the urinal 10. In addition, the control unit 40 performs pre-cleaning immediately before the user uses the urinal 10.

In this case, as shown in FIG. 9, the control unit 40 determines whether the predetermined time T _B which is set in advance from running last facility protection cleaning mode has elapsed (step S301). Control unit 40, if it is determined that the predetermined time _{T B} has elapsed in the process of step S301 (step S301: Yes), executes the equipment protection cleaning mode (step S302). The control unit 40 makes a determination in processing such as step S301 in, for example, a determination unit (not shown).

Control unit 40, if it is determined that the predetermined time _{T B} has elapsed in the process of step S301 (step S301: Yes), executes the equipment protection cleaning mode (step S302).

Control unit 40, when judging that has not passed the predetermined time _{T B} in the process of step S301 (step S301: No), calculates the cumulative usage time _{T C} of the urinal 10 (step S303). Control unit 40, the cumulative operating time within a predetermined time _{T D T C} is determined whether more than a predetermined set time _{T E} (step S304).

Control unit 40, the cumulative operating time _{T C} within a predetermined time _{T D} in the process of step S304 determines that the predetermined set time _{T E} above (step S304: Yes), the preset reserved time _{T F} (e.g. , About 20 seconds), the presence or absence of a user is determined by the human body detection sensor 25 (step S305).

When the control unit 40 determines that there is a user in the process of step S305 (step S305: Yes), that is, when it detects the next user, the pre-washing water amount is increased (step S306) and the pre-washing mode is executed. (Step S307).

The control unit 40, when completing the process of step S307, the process returns to step S301, starts to determine whether the predetermined time T _B has elapsed. Control unit 40 calculates in the pre-wash mode after about cumulative operating time T _C after step S307, also based on the pre-cleaning mode for the start time of the predetermined time T _D.

If the control unit 40 determines that the no user in the process of step S305 (including temporary detection) (Step S305: No), even if no predetermined time elapses T _B, run the facility protection cleaning mode (Step S308).

The control unit 40, when completing the process of step S308, the process returns to step S301, starts to determine whether the predetermined time T _B has elapsed. Control unit 40, for the cumulative use time T _C after step S308 is calculated at this facility protection washing mode after, also based on the equipment protection washing mode for the start time of the predetermined time T _D.

The control unit 40, the cumulative operating time within a predetermined time _{T D T C} is determined less than the predetermined set time _{T E} in the process of step S304 (step S304: No), for example, the process returns to step S301 continues to determine whether or not a predetermined time T _B has elapsed since the last ran equipment protection cleaning mode.

As described above, according to the third embodiment, when the amount of urine discharged to the drain pipe 60 reaches the amount to be washed, if the predetermined securing time _TF can be secured, the equipment protection cleaning is performed and the predetermined amount is determined. When the securing time _TF cannot be secured, that is, when the _{user uses the urinal within the securing time TF} , the amount of pre-washing water during this use is increased, so that the condition of urine stain in the drain pipe 60 Careful cleaning can be performed. As a result, for example, even if the number of users of the urinal 10 temporarily increases and the situation becomes congested and the amount of urine discharged to the drain pipe 60 becomes excessive, urine stones adhere to the drain pipe 60. And accumulation can be suppressed.

<Fourth Embodiment>
Next, the urinal 10 according to the fourth embodiment will be described with reference to FIG. FIG. 10 is a flowchart showing an example of a processing procedure of the equipment protection cleaning prohibition mode (second cleaning prohibition mode) of the urinal 10 according to the fourth embodiment. The fourth embodiment is different from the first to third embodiments described above in that the equipment protection cleaning mode has the first cleaning mode and the second cleaning mode.

In the fourth embodiment, when the equipment protection cleaning mode is executed, the control unit 40 first executes the first cleaning mode, and then executes the second cleaning mode. In the first washing mode, washing water is discharged from the spreader 24 toward the bowl portion 13. In the second washing mode, the disinfectant water is discharged from the spreader 24 toward the bowl portion 13.

Further, in the fourth embodiment, the control unit 40 controls to prohibit the execution of the second cleaning within the _{predetermined prohibition time TG after the first cleaning is performed.}

In this case, as shown in FIG. 10, the control unit 40 executes the first cleaning mode (step S501). _{The control unit 40 determines whether or not a predetermined prohibition time TG} (for example, 20 seconds) has elapsed from the process of step S501 (step S502). The control unit 40 makes a determination in the process of step S502, for example, in the determination unit (not shown).

Here, when the control unit 40 _{determines that the prohibition time TG} has not elapsed in the process of step S502 (step S502: No), the control unit 40 prohibits the execution of the second cleaning mode (step S503). As will be described later, the control unit 40 repeats the process of step S503 until it is determined _{that the prohibition time TG has elapsed.}

When the control unit 40 _{determines that the prohibition time TG} has elapsed in the process of step S502 (step S502: Yes), the control unit 40 releases the second cleaning prohibition (step S504), and executes the second cleaning mode (step S505). ). Then, when the process of step S505 is completed, the control unit 40 ends the second cleaning prohibition mode.

When the equipment protection cleaning mode has a first cleaning mode with cleaning water and a second cleaning mode with disinfecting water after the first cleaning mode is executed, the cleaning water of the first cleaning flows back once and downstream. If the disinfectant water of the second cleaning is poured before flowing to the side, not only the cleaning water of the first cleaning hinders the backflow of the disinfecting water, but also the disinfecting water finally flows into the connection portion 60a. , Since the washing water (backflow water) of the first washing that has been held down passes at the end, the sterilizing effect may be diminished.

In the fourth embodiment, since the second washing after the first washing is not performed immediately, it is possible to suppress the sterilization water from being washed away, and it is possible to suppress a decrease in the sterilization effect.

In the first to fourth embodiments described above, but from the time of the human body detection on by the human body detecting sensor 25 is configured to calculate the cumulative use time T _C of the urinal 10, for example, the presence of urine, such as urine flow it may be configured to calculate the cumulative use time T _C of the urinal 10 based on provided with a measuring unit for measuring the time during which detects, in the measurement unit measurement results (the urine detection time).

According to such a configuration, similarly to the first to fourth embodiments described above, can be obtained easily accumulated use time T _C of the urinal 10, easily estimate the urine volume discharged in the drainage pipe 60 can do. As described above, a microwave sensor, a capacitance sensor, or the like is adopted as a sensor for measuring the time during which the presence of urine such as urine flow is detected.

Further, in the first to fourth embodiments described above, the automatic cleaning unit 20 is arranged in the urinal 10, but the automatic cleaning unit 20 is arranged separately from the urinal 10. May be good. Further, a plurality of urinals 10 may be controlled by a single control unit 40 of the automatic cleaning unit 20. Further, the automatic cleaning unit 20 is separated from the urinal 10 and arranged on the back side (behind the wall) of the wall surface 2 of the toilet room, and the control unit 40 is configured to cooperate between the urinals 10 via telecommunications. You may.

Further effects and variations can be easily derived by those skilled in the art. For this reason, the broader aspects of the invention are not limited to the particular details and representative embodiments expressed and described above. Therefore, various modifications can be made without departing from the spirit or scope of the general concept of the invention as defined by the appended claims and their equivalents.

10 Urinal 13 Bowl part 15 Trap part 24 Water discharge part (spreader)
25 Use detection unit (human body detection sensor)
40 control unit 50 instrument drain pipe 60 drain pipe T _C cumulative operating time T _D predetermined time T _E set time T _F secure time T _G prohibition time W _T accumulated water

Claims (6)

A urinal that is connected to the drainage pipe of a building via a plumbing lamp.
The bowl part that receives the user's urine and
A trap portion that forms a pool of water in the bowl portion and
A water discharge unit that discharges washing water toward the bowl portion to perform a drainage operation on the drainage pipe.
A usage detection unit that detects the use of the urinal, and
It is equipped with a control unit that controls the water discharge unit, executes the main cleaning mode in which the cleaning water is discharged after the urinal is used, and executes the equipment protection cleaning mode in which the cleaning water is discharged at a predetermined timing.
The control unit calculates the cumulative usage time of the urinal, and executes the equipment protection cleaning mode according to the cumulative usage time at a predetermined time interval. The control unit controls the water discharge unit to execute a pre-wash mode in which the wash water is discharged immediately before the use of the urinal, and determines the amount of wash water in the pre-wash mode according to the cumulative use time at a predetermined time interval. The urinal according to claim 1, which is to be changed. The urinal according to claim 2, wherein the control unit increases the amount of washing water in the pre-washing mode when the cumulative usage time at a predetermined time interval exceeds a preset predetermined time. The control unit executes the equipment protection cleaning mode when the urinal is not used during the predetermined securing time in a state where the cumulative usage time at a predetermined time interval is equal to or longer than a preset predetermined time. The urinal according to claim 3, wherein when the urinal is used during the securing time, the amount of washing water in the pre-washing mode at the time of use is increased. The equipment protection cleaning mode has a first cleaning mode using cleaning water and a second cleaning mode executed after the first cleaning mode and using sterilized water.
The urinal according to any one of claims 1 to 4, wherein the control unit prohibits the second cleaning mode within a predetermined prohibition time after executing the first cleaning mode. The use detection unit is a human body detection unit that detects the user of the urinal.
The urinal according to any one of claims 1 to 5, wherein the control unit calculates the cumulative usage time based on the detection result of the human body detection unit.

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