JP2018080465A - Washstand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washstand which suppresses wasteful water release of functional water and besides can keep a bowl part thereof clean.SOLUTION: A washstand (1) capable of releasing tap water and functional water is provided, including: a bowl part (2); a first water release part (4a) releasing the tap water; a first solenoid valve (28a) which switches water release and cutoff from the first water release part; a second water release part (4b) releasing the functional water to the bowl part; a second solenoid valve (28b) which switches water release and cutoff from the second water release part; an approach sensor (18) which detects approach of a detection object; and a control part (40) which opens the first solenoid valve during a period during which the approach of the detection object is detected. The control part performs water release from the second water release part by controlling the second solenoid valve when the period during which the approach of the detection object is detected by the approach sensor is equal to or longer than the prescribed period, and does not perform water release from the second water release part when the period during which the approach of the detection object is detected is less than the prescribed period.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a wash basin, and more particularly to a wash basin capable of discharging tap water and functional water having a sterilizing action.

  A wash basin having a function of discharging functional water having a sterilizing action such as electrolyzed water obtained by electrolyzing tap water is known. In such a wash basin, after the user uses the wash basin for washing or hand washing, functional water having a disinfecting action is sprayed into the wash bowl. That is, by using the washstand by the user, the bacteria that have been washed away by hand washing etc. adhere to the wash bowl, and the user does not propagate on the bowl surface of the wash bowl or the drain outlet. After use of the wash basin, functional water is sprayed into the wash bowl.

  Japanese Patent Laying-Open No. 2006-108733 (Patent Document 1) describes an automatic faucet device that automatically discharges water when an object to be detected is detected. In this automatic water faucet device, when an object to be detected is detected, functional water is sprayed onto the hand-washing bowl for a predetermined time, and then water discharge is started. Thereafter, when the object to be detected is no longer detected, the tap water discharge is stopped, and after 3 seconds, the functional water is sprayed again on the hand-washing bowl for a predetermined time. This prevents germs from breeding on the bowl surface of the hand-washing bowl and the drain.

JP, 2006-108733, A

  Here, for example, when brushing teeth on a wash basin, first, a toothbrush is wetted with a small amount of water, and then water for gargle is placed in a cup. After brushing the teeth with a toothbrush, gargle and rinse around the mouth, and finally rinse the toothbrush and gargle cup with water. Thus, even if the user simply uses the washstand to brush his / her teeth, the tap water is discharged and stopped many times. Considering the actual use of the washbasin, there are very many usages that frequently repeat such tap water discharge and stoppage, such as wetting the shave, washing the shave, washing the face, and washing the contact lens.

  In this way, when the user uses the wash basin once, the tap water is repeatedly spouted and the functional water having a sterilizing action is spouted every time it is stopped. However, a large amount of functional water is required, which is not preferable from the viewpoint of saving water. In addition, it is unlikely that many germs adhere to the wash bowl due to this, particularly in the operation of wetting the toothbrush with a small amount of water. In addition, immediately after wetting the toothbrush with water at the start of tooth brushing, tap water is repeatedly discharged by the operation of washing the toothbrush and the cup, etc., so the surface is washed with functional water discharged after such work. The effect of sterilizing the bowl is almost wasted due to tap water discharged by the next operation. In addition, when functional water having a sterilizing action is generated by electrolyzing tap water, there is a problem that the electrode used for electrolysis is wasted and the life of the electrode is shortened.

  This invention was made in order to solve the above problems, and it aims at providing the washstand which can keep a bowl part clean, suppressing useless discharge of functional water. Yes.

  In order to solve the above-described problems, the present invention is a wash basin capable of discharging tap water and functional water having a sterilizing action, and has a bowl portion having a drain outlet, and discharges tap water to the bowl portion. A first water discharger for switching, water discharge from the first water discharger, a first electromagnetic valve for switching water stop, and a second for discharging functional water having a sterilizing action to the bowl part A water discharger, a second electromagnetic valve for switching water discharge and water stop from the second water discharger, an approach sensor for detecting the approach of the detected object to the first water discharger, and the proximity sensor A control unit that opens the first electromagnetic valve and discharges tap water while the approach of the detected object is detected, and the control unit detects the approach of the detected object by the proximity sensor. If the time is longer than the predetermined time, the second solenoid valve is controlled to Run the water discharge from the water portion, if time is detecting the approach of the detection object is less than the predetermined time is characterized by not perform water discharge from the second jetting unit.

  In the present invention configured as described above, the proximity sensor detects the approach of the detected object to the first water discharge unit, and the control unit detects the approach of the detected object by the proximity sensor. 1 solenoid valve is opened. Thereby, tap water is discharged from the 1st water discharging part to the bowl part which has a drain outlet. On the other hand, the water discharge from the second water discharger and the stop of the functional water having a sterilizing action are switched by the second electromagnetic valve. The control unit controls the second electromagnetic valve to execute water discharge from the second water discharge unit when the time during which the approach sensor detects the approach of the detected object is a predetermined time or more, When the time for detecting the approach of the detected object is less than the predetermined time, water discharge from the second water discharge unit is not executed.

  According to the present invention configured as described above, functional water is discharged when the time during which the proximity sensor detects the approach of the object to be detected is equal to or longer than a predetermined time, for example, to wet a toothbrush, The functional water is not discharged every time there is water discharge for an extremely short time, and the wasteful discharge of the functional water can be prevented. In addition, if the time when the proximity sensor detects the approach of the detected object exceeds a predetermined time, the functional water is discharged. For example, when the user completes one brushing of the tooth, an appropriate timing is obtained. Thus, functional water can be discharged, and propagation of germs in the bowl portion and the drain outlet can be effectively suppressed while water saving is realized. Furthermore, when electrolyzed water is used as functional water, waste of electrolyzed water is suppressed, so that consumption of electrodes and the like for generating electrolyzed water and useless power consumption can be suppressed.

  In the present invention, preferably, after the previous water discharge from the second water discharge unit is completed, the control unit is configured such that the total time during which the approach of the detected object is detected by the proximity sensor is equal to or greater than a predetermined water discharge execution time. Then, water discharge from the second water discharge unit is executed.

  According to the present invention configured as described above, after the previous water discharge from the second water discharge unit, when the total time during which the approach of the detected object is detected by the proximity sensor is equal to or greater than the predetermined water discharge execution time, Since water is discharged from the second water discharger, after the sterilization or sterilization by the previous discharge of the functional water, the functional water can be discharged after the washstand is used to some extent, and the bowl can be discharged at an appropriate interval. The part can be sterilized or sterilized.

In this invention, Preferably, a control part starts the water discharge from a 2nd water discharge part, after the water discharge from a 1st water discharge part is complete | finished.
According to the present invention configured as described above, since the water discharge from the second water discharge unit is started after the water discharge from the first water discharge unit is finished, the functional water is also discharged while the tap water is discharged. There is nothing to do. Here, when tap water and functional water are discharged at the same time, the functional water is diluted with tap water at the surface of the bowl or at the drain outlet, so the sterilization or sterilization effect by the functional water is reduced. End up. According to the present invention configured as described above, the functional water can be prevented from being diluted, and the bowl portion can be effectively sterilized or sterilized with a small amount of the functional water.

  In the present invention, preferably, the control unit is configured to start water discharge from the second water discharge unit after a predetermined standby time has elapsed after the end of water discharge from the first water discharge unit. If the proximity sensor detects the approach of the object to be detected before the elapse of time, water is discharged from the first water discharger, and after the water discharge ends, the waiting time elapses, Water discharge from the water discharge unit 2 is started.

  According to the present invention configured as described above, since the water discharge from the second water discharger is started after a predetermined waiting time has elapsed after the water discharge from the first water discharger is completed, the user can The probability that functional water will be discharged while water discharge from the first water discharge section is stopped while using the washstand can be reduced, and waste of functional water can be prevented. . In addition, when the proximity sensor detects the approach of the object to be detected during the standby time and water is discharged from the first water discharger, the functional water is not allowed to wait until the standby time elapses after the water discharge ends. Since the tap water discharged to the bowl portion is sufficiently discharged from the drain outlet, the functional water can be discharged, and the functional water can be sufficiently sterilized by the functional water in the vicinity of the drain outlet. Sterilization can be performed.

  In the present invention, preferably, when the water discharge by the first water discharger is performed during the standby time, the controller ends the water discharge even when the water discharge time is less than a predetermined water discharge execution time. Thereafter, water discharge from the second water discharger is started.

  According to the present invention configured as described above, the time during which the proximity sensor detects the approach of the object to be detected is equal to or longer than the predetermined water discharge execution time, and the first time while waiting for the elapse of the predetermined standby time. When water discharge is performed from one water discharge unit, water discharge from the second water discharge unit is executed even if the water discharge time is less than a predetermined water discharge execution time. For this reason, the frequency which discharges functional water from a 2nd water discharging part does not fall too much, and it can suppress propagation of miscellaneous bacteria, preventing waste of functional water.

  According to the washstand of the present invention, it is possible to keep the bowl portion clean while suppressing wasteful discharge of functional water.

It is a perspective view which shows the external appearance of the whole washstand by embodiment of this invention. It is a perspective view which expands and shows the faucet device unit with which the washstand of the embodiment of the present invention was equipped. It is the perspective view which looked at the faucet device unit with which the washstand of the embodiment of the present invention was provided from diagonally below. It is a block diagram which shows the water discharge system in the wash basin by embodiment of this invention. It is a control flowchart of the solenoid valve for functional water by the controller with which the wash basin of embodiment of this invention was equipped. It is a time chart which shows an example of control by the controller with which the washstand of the embodiment of the present invention was equipped. It is a time chart which shows the other example of control by the controller with which the wash basin of embodiment of this invention was equipped. It is a time chart which shows the other example of control by the controller with which the wash basin of embodiment of this invention was equipped.

Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
First, with reference to FIG. 1 thru | or FIG. 4, the whole structure of the washstand by embodiment of this invention is demonstrated. FIG. 1 is a perspective view showing the appearance of the entire washstand according to the embodiment of the present invention. FIG. 2 is an enlarged perspective view showing the faucet device unit provided in the washstand according to the embodiment of the present invention. FIG. 3 is a perspective view of the faucet device unit as viewed obliquely from below. FIG. 4 is a block diagram showing a water discharge system in the wash basin according to the embodiment of the present invention.

  As shown in FIG. 1, a wash basin 1 according to an embodiment of the present invention is provided with a bowl part 2, a faucet device unit 4 disposed above the bowl part 2, and a bowl part 2. The lower cabinet 6 that supports the section 2 and the upper cabinet 8 that is disposed above the faucet unit 4 are provided.

  The bowl portion 2 is a generally rectangular wash bowl disposed to receive tap water discharged from the faucet device unit 4, and a drain outlet 2 a is provided at the center and the back side. In this specification, “tap water” includes not only city water provided by a water utility, but also well water used for washing, hand washing, and the like.

  The faucet device unit 4 is a rectangular parallelepiped unit attached to the upper wall surface of the bowl portion 2, and automatically discharges tap water from the first water discharge portion 4 a provided on the lower surface thereof toward the bowl portion 2. A faucet is built-in. The detailed function and structure of the faucet unit 4 will be described later.

The lower cabinet 6 is a cabinet that is disposed below the bowl portion 2 and supports the bowl portion 2, and is provided with two stages of drawers. Further, inside the lower cabinet 6 are housed devices such as a solenoid valve for switching tap water discharge and stop. Details of the equipment stored in the lower cabinet 6 will be described later.
The upper cabinet 8 is a thin cabinet provided on the wall surface above the faucet device unit 4, and a mirror is attached to the front surface thereof.

Next, the configuration of the faucet device unit 4 will be described with reference to FIGS.
As shown in FIG. 2, the faucet device unit 4 includes a first water discharge unit 4 a, a second water discharge unit 4 b, a flow / temperature control valve 10, an operation switch 12, a touch switch 14, LED 16 for illumination is provided.

  The first water discharger 4a is formed of a cylindrical member provided obliquely forward in the center of the lower surface of the faucet device unit 4, and tap water used for washing, hand washing, etc. is directed toward the bowl 2. It is comprised so that it may discharge. Moreover, the proximity sensor 18 is provided in the front side surface of the 1st water discharging part 4a, and it is comprised so that to-be-detected objects, such as a finger, may approach the 1st water discharging part 4a. In the present embodiment, the proximity sensor 18 is an infrared sensor, and is configured to detect the infrared light reflected by a finger or the like approaching the first water discharger 4a and detect the approach of the finger or the like. ing. As the proximity sensor, any non-contact type sensor such as an infrared type or a microwave type can be used. In addition, in this embodiment, the 1st water discharging part 4a becomes a pull-out type, and is comprised so that it can pull out from the faucet apparatus unit 4. FIG.

  The second water discharger 4b is a water discharger provided in the vicinity of the side of the first water discharger 4a, and sprays (discharges) functional water having a sterilizing action at a predetermined timing toward the bowl 2. ) Is configured to.

  The flow control / temperature control valve 10 is a so-called “single lever faucet” capable of mixing the supplied hot water and water at a predetermined ratio and adjusting the flow rate of the mixed hot water. The unit 4 is housed in the right end. An operation lever 10 a is attached to the flow control / temperature control valve 10, and the operation lever 10 a protrudes downward from the lower surface of the faucet device unit 4. In the present embodiment, the flow rate of hot water discharged from the first water discharger 4a is adjusted by operating the operation lever 10a in the front-rear direction, and the temperature of hot water can be adjusted by operating in the left-right direction. .

The operation switch 12 is a switch provided on the left side of the front surface of the faucet device unit 4. By operating the operation switch 12, the illumination LED 16 can be switched on and off, and the function of discharging the functional water from the second water discharger 4b can be switched on and off.
The touch switch 14 is a switch provided on the right side of the front surface of the faucet device unit 4. By operating the touch switch 14, it is possible to switch whether or not to automatically discharge and stop water from the first water discharger 4 a as an automatic faucet.
The LED 16 for illumination is LED provided in two places of the lower surface and back | inner side of the faucet device unit 4, and is comprised so that the hand of the user who uses the washstand 1 may be illuminated.

Next, with reference to FIG. 4, the water supply / hot-water supply system in the washbasin 1 by embodiment of this invention is demonstrated.
As shown in FIG. 4, in the water supply system, in order from the upstream side, a water supply pipe 20a for supplying tap water, a stop cock 22a for blocking tap water, and foreign matters mixed in tap water are removed. And a water electromagnetic valve 28a, which is a first electromagnetic valve that switches between discharging and stopping tap water from the first water discharger 4a. Similarly, in the hot water supply system, in order from the upstream side, a hot water supply pipe 20b for supplying hot water from a water heater (not shown), a water stop cock 22b for shutting off the hot water, and mixed foreign matters are removed. And a hot water electromagnetic valve 28b, which is a first electromagnetic valve that switches between discharging and stopping hot water from the first water discharger 4a.

  Water and hot water respectively supplied through these water supply system and hot water supply system are mixed at a predetermined ratio by the flow control / temperature control valve 10 and discharged from the first water discharger 4a.

  Moreover, the solenoid valve for water 28a and the solenoid valve for hot water 28b are comprised so that valve opening and closing may be controlled by the controller 40 which is a control part. That is, the detection signal from the proximity sensor 18 is sent to the controller 40. The controller 40 sends a signal to the water electromagnetic valve 28a and the hot water electromagnetic valve 28b while the object to be detected such as a finger is approaching the first water discharger 4a, and opens the valve so that the water discharger 4a Discharge hot water. Further, the controller 40 detects from the time when the proximity sensor 18 detects the object to be detected and opens the water electromagnetic valve 28a and the hot water electromagnetic valve 28b until the object to be detected is not detected and is closed. It has a built-in timer that measures the time. In the present embodiment, the controller 40 includes a microprocessor, a memory, an interface circuit, a drive circuit for an electromagnetic valve, and software (not shown) for operating these. The controller 40 is operated by electric power supplied from the AC power source 42.

Next, generation and discharge systems of functional water discharged from the second water discharger 4b will be described.
As shown in FIG. 4, the tap water supplied from the water supply pipe 20a is branched into two pipes on the downstream side of the filter 24a, one is connected to the water electromagnetic valve 28a, and the other is the second electromagnetic valve. Is connected to the functional water electromagnetic valve 30. As will be described below, functional water having a sterilizing action is generated from the tap water that has passed through the functional water electromagnetic valve 30 and is discharged from the second water discharger 4b. The controller 40 controls the opening and closing of the functional water solenoid valve 30 according to the control signal, opens the functional water solenoid valve 30 at a predetermined timing, and discharges the functional water from the second water discharger 4b. .

A pressure regulating valve 32, a safety valve 34, a check valve 36, and an electrolytic cell 38 are connected to the downstream side of the functional water electromagnetic valve 30 in order from the upstream side.
The pressure regulating valve 32 is configured to adjust the pressure of the tap water flowing in from the functional water electromagnetic valve 30 to flow out. The tap water flowing in from the functional water solenoid valve 30 is adjusted by the pressure regulating valve 32 to a pressure suitable for spraying from the second water discharger 4b.

The safety valve 34 is configured to release the tap water in the pipe to the downstream side of the water electromagnetic valve 28a when the pressure in the pipe for supplying functional water becomes equal to or higher than a predetermined pressure. For example, when the water discharge port of the second water discharge unit 4b is blocked and the pressure in the pipe line suddenly increases, the safety valve 34 is opened, and the water in the pipe line is used for water through the bypass flow path 34a. It flows out to the pipe line on the downstream side of the electromagnetic valve 28a. Since the tap water that has passed through the bypass channel 34a is discharged from the first water discharger 4a through the flow control / temperature control valve 10, it is possible to prevent the pressure in the pipe from rising above a predetermined pressure. Can do.
The check valve 36 is provided in a pipe line between the safety valve 34 and the electrolytic bath 38, and is configured to prevent the electrolytic water in the electrolytic bath 38 from flowing back to the safety valve 34 side.

The electrolytic bath 38 is configured to electrolyze the supplied tap water to generate electrolytic water that is functional water. The controller 40 controls energization and stop of the electrolytic cell 38 and applies voltage between electrodes (not shown) in the electrolytic cell 38 at a predetermined timing to generate electrolyzed water. As electrolyzed water used by this embodiment, what is necessary is just water which has the disinfection function obtained by electrolysis. A representative example of electrolyzed water is electrolyzed water containing hypochlorous acid. In general, since clean water or intermediate water contains chlorine ions, free chlorine is produced by electrolysis. Free chlorine exists as hypochlorous acid (HClO) when acidic, and in this form is about 10 times stronger in bactericidal power than hypochlorite ion (ClO ⁻ ), which is an alkaline existence form. Moreover, even if it is neutral, a strong bactericidal power about the middle of it can be obtained. Therefore, the water electrolyzed in the continuous electrolysis tank is sterilized water having a strong sterilizing power.

  As mentioned above, generally used tap water (water or middle water) contains chlorine ions, but when used in areas where the chlorine ion concentration is low, or when a strong bactericidal action is required Can be supplemented with chloride by adding chloride such as salt.

  As an electrode used for chlorine generation, a conductive base material carrying a chlorine generation catalyst or a conductive material made of a chlorine generation catalyst is used. Depending on the type of catalyst for generating chlorine, for example, iron-based electrodes such as ferrite, palladium-based electrodes, ruthenium-based electrodes, iridium-based electrodes, platinum-based electrodes, ruthenium-tin-based electrodes, palladium-platinum-based electrodes, iridium-platinum-based electrodes , Ruthenium-platinum electrodes, iridium-platinum-tantalum electrodes, and the like. In the case where a catalyst for generating chlorine is carried on a conductive base material, the base material part that bears the structure can be made of inexpensive materials such as titanium and stainless steel, which is advantageous in terms of manufacturing cost.

In addition to chlorine, hypohalous acid obtained by electrolyzing water containing halogen ions may be used.
As other electrolyzed water, silver ion water obtained by utilizing silver as an electrode can be mentioned. Silver ions are said to adsorb to the enzyme in the bacterial cell membrane and inhibit the action of the enzyme, which makes it impossible for the bacteria to sustain their lives. There is also an action of coating the surface of the base material that comes into contact, and it becomes difficult for bacteria to propagate on the surface of the base material. Since silver ions can coat the substrate surface to prevent the adhesion of bacteria and have bactericidal power, the growth of bacteria on the substrate surface can be effectively suppressed. At that time, by combining with a cleaning method for increasing the replacement rate of the drain trap, it becomes possible to suppress the slime and smell of the drain for a long period of time.

  In addition, various types of electrolyzed water, such as ozone water that generates high-concentration ozone along with the generation of oxygen on the anode side, can be suitably used, especially by using lead dioxide (β-type) as an electrode for electrolysis. It is.

  Furthermore, examples of the sterilizing water other than the electrolyzed water include aqueous solutions in which various sterilizing components are dissolved. As the disinfecting component to be dissolved, any of solid, liquid, and gas may be used. In the case of using a liquid sterilizing component, for example, alcohols such as ethanol and isopropanol, hydrogen peroxide, etc. may be applied. Moreover, when using a gas disinfection component, ozone water should just be produced by dissolving ozone in water as a fine bubble, for example. Moreover, what is necessary is just to apply sodium hypochlorite etc., for example, when using a solid sanitization component.

The various electrolyzed water and sterilized water as described above correspond to “functional water” in the present invention. Here, in the present specification, the term “sanitization” not only means to reduce bacteria (in this case, it includes not only the meaning to remove and reduce bacteria but also the meaning to kill and reduce bacteria), It is used as a broad concept that also includes the meaning of inhibiting the growth of bacteria even if it is not reduced. The “functional water” in the present invention means water obtained by adding a sterilization function in this sense to normal water by a predetermined treatment.
In this embodiment, an example in which electrolyzed water is used as the functional water in the present invention will be described. However, in place of electrolyzed water, sterilized water as described above other than electrolyzed water may be used. Needless to say.

Next, with reference to FIG. 5 thru | or FIG. 8, the effect | action of the washbasin 1 by embodiment of this invention is demonstrated.
FIG. 5 is a control flowchart of the functional water solenoid valve 30 by the controller 40. FIG. 6 is a time chart showing an example of control by the controller 40. In order from the top, presence / absence of detection by the proximity sensor 18, opening / closing of the water electromagnetic valve 28a and hot water electromagnetic valve 28b, integrated value of detection time, function Opening and closing of the water solenoid valve 30 is shown. 7 and 8 are time charts showing other examples of control by the controller 40. FIG.
The control flowchart shown in FIG. 5 is activated when the proximity sensor 18 detects an object to be detected in a state where the discharge of electrolyzed water (functional water) by the second water discharger 4b has been completed (detection time count = 0). It is a flowchart.

  First, when the user of the washstand 1 brings his / her finger close to the vicinity of the first water discharger 4a at time t1 in FIG. 6, the proximity sensor 18 detects this. When the proximity sensor 18 detects an object to be detected, the controller 40 sends control signals to the water solenoid valve 28a and the hot water solenoid valve 28b to open them. When the water electromagnetic valve 28a is opened, the tap water supplied from the water supply pipe 20a reaches the water electromagnetic valve 28a through the stop cock 22a and the filter 24a, and reaches the flow control / temperature control valve 10. Inflow. On the other hand, when the hot water solenoid valve 28b is opened, the hot water supplied from the hot water supply pipe 20b reaches the hot water solenoid valve 28b through the stop cock 22b and the filter 24b, and the flow control / temperature control valve 10 is supplied. Flow into.

  The tap water and hot water that have flowed into the flow control / temperature control valve 10 are mixed here and discharged toward the bowl portion 2 from the water discharge port of the first water discharge portion 4a. Here, the mixing ratio of hot water and water in the flow control / temperature control valve 10 is set by the rotational position of the operation lever 10a in the left-right direction. The flow rate of the hot water flowing out from the flow control / temperature control valve 10 is set by the rotational position of the operation lever 10a in the front-rear direction. Hot water flowing out of the flow / temperature control valve 10 is discharged from the first water discharger 4a. The proximity sensor 18 detects a finger or the like and opens the water solenoid valve 28a and the hot water solenoid valve 28b, thereby detecting the time when water is discharged from the first water discharger 4a (second stage in FIG. 6, time). t1 to t2) are integrated in the controller 40.

That is, when the proximity sensor 18 detects an object to be detected at time t1 in FIG. 6, the flowchart shown in FIG. 5 is executed, and the water discharge time (detection time) is integrated by a timer (not shown) built in the controller 40. Is started (step S1 in the flowchart of FIG. 5). As a result, the accumulated time calculated by the controller 40 increases (third stage in FIG. 6, times t1 to t2).
Next, in step S2 of FIG. 5, it is determined whether or not the calculated integrated time is equal to or greater than a predetermined water discharge execution time τ1, and if it is less than the water discharge execution time τ1, the process of step S2 is repeated. It is. In the present embodiment, the predetermined water discharge execution time τ1 is 3 seconds.

  When the user moves his / her finger away from the first water discharger 4a at time t2 in FIG. 6, the proximity sensor 18 no longer detects the object to be detected, so the controller 40 turns off the water solenoid valve 28a and the hot water solenoid valve 28b. Close the valve. Thereby, the integration of the detection time is stopped and the integration time is maintained at a constant value (time t2 to t3 in FIG. 6). During this time, the process of step S2 is repeated in the flowchart of FIG. In addition, since the detection time between the time t1-t2 of FIG. 6 is a short time less than predetermined | prescribed water discharge execution time (tau) 1, after water discharge is stopped in the time t2, the electrolysis from the 2nd water discharge part 4b is carried out. There is no water spray. That is, since it is estimated that the amount of water discharged at the times t1 to t2 is small, the bowl portion is not likely to be very dirty, and the user may continue to discharge water. Not done.

  Further, when the user again brings his / her finger close to the first water discharger 4a at time t3 in FIG. 6, the controller 40 opens the water electromagnetic valve 28a and the hot water electromagnetic valve 28b. Thereby, the integration by the controller 40 is started again, and the integration time starts increasing again (time t3 in FIG. 6). Next, when the integration time reaches 3 seconds at time t4 in FIG. 6, the processing in the flowchart in FIG. 5 proceeds from step S2 to step S3.

In step S3, it is determined whether or not the water solenoid valve 28a and the hot water solenoid valve 28b are closed, that is, whether or not water is discharged from the first water discharger 4a. When the water discharge is not performed, the process proceeds to step S4, and when the water discharge is performed, the processes of steps S3 → S5 → S3 are repeatedly executed. The “standby time reset” in step S5 will be described later.
Next, when the proximity sensor 18 no longer detects an object to be detected at time t5 in FIG. 6, the controller 40 closes the water solenoid valve 28a and the hot water solenoid valve 28b, and water discharge is stopped. When water discharge is stopped, the processing in the flowchart of FIG. 5 proceeds from step S3 to step S4.

  In step S4, it is determined whether or not a predetermined waiting time T1 at which integration is started has elapsed since the water solenoid valve 28a and the hot water solenoid valve 28b are closed (time t5). If the waiting time T1 has elapsed, the process proceeds to step S6, and if not, the process returns to step S3. Therefore, after the water discharge is stopped at time t5, when the proximity sensor 18 does not detect the detection object, the processes of steps S4 → S3 → S4 are repeatedly executed until the standby time T1 elapses. In the present embodiment, the waiting time T1 is 5 seconds.

  When the standby time T1 elapses at time t6 in FIG. 6, the processing in the flowchart in FIG. 5 proceeds from step S4 to step S6. In the processing after step S6, spraying of electrolyzed water from the second water discharger 4b is executed. Thus, the water discharge time (detection time) between time t3 and t5, which is the latest water discharge, is a short one less than the predetermined water discharge execution time τ1, but the water discharge after the previous spraying of electrolyzed water is performed. Since the accumulated time (accumulated time after time t1) is equal to or greater than the water discharge execution time τ1, spraying of electrolyzed water is performed after waiting time T1 elapses after water discharge is stopped at time t5. Moreover, although the water discharge from the 1st water discharging part 4a is stopped at the time t5, immediately after the water discharge stop, the user has not finished using the washstand 1 yet, and the water discharge may be performed again. Therefore, after stopping the water discharge at time t5, the spraying of electrolyzed water is executed after waiting for the waiting time T1 to elapse.

  In step S6, the controller 40 sends a signal to the functional water solenoid valve 30 to open it. Next, in step S <b> 7, the controller 40 applies a voltage to the electrode (not shown) of the electrolytic cell 38. When the functional water electromagnetic valve 30 is opened, the tap water supplied from the water supply pipe 20a reaches the functional water electromagnetic valve 30 through the stop cock 22a and the filter 24a. The tap water that has passed through the functional water electromagnetic valve 30 flows into the electrolytic cell 38 through the pressure regulating valve 32 and the check valve 36. The tap water that has flowed into the electrolytic bath 38 is electrolyzed by the voltage (current) applied by the controller 40 to generate electrolytic water. The generated electrolyzed water is made into a mist and sprayed from the second water discharger 4b onto the bowl part 2. The surface of the bowl part 2 and the drain port 2a are sterilized by the sprayed electrolyzed water, and propagation of various bacteria is suppressed.

  Next, in step S8 in FIG. 5, after the functional water solenoid valve 30 is opened (after time t6 in FIG. 6), it is determined whether or not a predetermined functional water discharge time T2 has elapsed. If the functional water discharge time T2 has elapsed, the process proceeds to step S10, and if not, the process proceeds to step S9. In step S9, it is determined whether or not the water solenoid valve 28a and the hot water solenoid valve 28b are closed (whether or not water is discharged). If water is not discharged, the process proceeds to step S8. Returning to step S13 when water discharge is performed. Therefore, after the functional water solenoid valve 30 is opened at time t6, if the proximity sensor 18 has not detected the object to be detected, steps S8 → S9 → S8 until the functional water discharge time T2 elapses. This process is repeatedly executed. In the present embodiment, the functional water discharge time T2 is 10 seconds.

  Furthermore, when the functional water discharge time T2 elapses at time t7 in FIG. 6, the processing in the flowchart in FIG. 5 proceeds from step S8 to step S10. In step S10, the controller 40 sends a signal to the functional water solenoid valve 30 to close it. Next, in step S <b> 11, the controller 40 stops energization to the electrolytic cell 38. Further, in step S12, the controller 40 resets the accumulated time of the detection time accumulated by the controller 40 to zero, and ends the one-time process of the flowchart shown in FIG. When the water discharge from the first water discharger 4a is started after the process of the flowchart shown in FIG. 5 is completed, the process of the flowchart of FIG. 5 is started again from step S1.

Next, another example of control by the controller 40 will be described with reference to FIGS. 5 and 7.
First, when the proximity sensor 18 detects an object to be detected at time t8 in FIG. 7, the processing of the flowchart shown in FIG. 5 is started, and integration of the detection time during which water is discharged from the first water discharger 4a is started. (Step S1 in FIG. 5). Next, when the accumulated time exceeds a predetermined water discharge execution time τ1 at time t9 in FIG. 7, the process in the flowchart shown in FIG. 5 proceeds from step S2 to S3. Furthermore, when the proximity sensor 18 no longer detects an object to be detected at time t10 in FIG. 7, water discharge from the first water discharge unit 4a is stopped. Thereby, the processing in the flowchart of FIG. 5 proceeds from step S3 to S4, and the integration of the standby time is started from time t10. The standby time when the integration is started from time t10 is integrated while the processes of steps S4 → S3 → S4 are repeated.

  Next, when the proximity sensor 18 detects an object to be detected before the predetermined standby time T1 elapses (before the accumulated standby time reaches T1) at time t11 in FIG. The water solenoid valve 28a and the hot water solenoid valve 28b are opened, and water discharge is started. Thereby, in the flowchart shown in FIG. 5, the process in which steps S4 → S3 → S4 are repeated will repeat steps S3 → S5 → S3. Here, in step S5, since the accumulated waiting time is reset, the waiting time is not accumulated (waiting) while steps S3 → S5 → S3 are repeated (while water is discharged). The accumulated time does not increase).

  Next, when the proximity sensor 18 no longer detects the object to be detected at time t12 in FIG. 7, the controller 40 closes the water solenoid valve 28a and the hot water solenoid valve 28b, and water discharge is stopped. Thereby, in the flowchart shown in FIG. 5, the process in which steps S3 → S5 → S3 are repeated will repeat steps S4 → S3 → S4, and the integration of the standby time from time t12 is started. Furthermore, when the predetermined standby time T1 has elapsed at time t13 in FIG. 7 without discharging water during the integration of the standby time, the processing in the flowchart shown in FIG. 5 proceeds from step S4 to S6. In the process after step S6, electrolyzed water is sprayed from the second water discharger 4b over a predetermined functional water discharge time T2 (time t13 to t14 in FIG. 7), and one process of the flowchart shown in FIG. 5 is performed. finish.

  As described above, after the detection time (integrated time) during which the proximity sensor 18 detects the detection object becomes equal to or longer than the predetermined water discharge execution time τ1 (after time t9 in FIG. 7), the predetermined waiting time T1 is reached. While waiting for progress (time t10), when water discharge is performed again (time t11), the accumulated value of the standby time is reset, and after the water discharge is stopped (after time t12), it waits again. Integration of time starts from zero (time t12-). Here, the water discharge (time t11 to t12) performed during the standby time is a short time less than the predetermined water discharge execution time τ1, but the accumulated time has already exceeded the water discharge execution time τ1 at time t9. Regardless of the amount of water discharged during this period (time t11 to t12), after a predetermined waiting time T1 has elapsed (after time t13), spraying of electrolytic water is performed (time t13 to t14).

Next, another example of control by the controller 40 will be described with reference to FIGS. 5 and 8.
First, when the proximity sensor 18 detects an object to be detected at time t15 in FIG. 8, the processing of the flowchart shown in FIG. 5 is started, and integration of the detection time is started by the controller 40 (step S1 in FIG. 5). Next, when the accumulated time exceeds a predetermined water discharge execution time τ1 at time t16 in FIG. 8, the process in the flowchart proceeds from step S2 to S3, and water discharge from the first water discharger 4a is stopped at time t17. . As a result, the processing in the flowchart proceeds from step S3 to S4, the integration of the standby time is started from time t17, and the predetermined standby time T1 elapses at time t18.

  When the standby time T1 elapses at time t18, the process in the flowchart of FIG. 5 proceeds from step S4 to S6, and spraying of electrolytic water from the second water discharger 4b is started. While this electrolyzed water spraying is being executed, the process of steps S8 → S9 → S8 is repeated in the flowchart. The spraying of electrolyzed water is continued for a predetermined functional water discharge time T2 from the start of spraying, but in the example shown in FIG. 8, before the functional water discharge time T2 elapses from the start of spraying at time t18, the proximity sensor 18 is used. Is detected (time t19 in FIG. 8). When the object to be detected is detected, water discharge from the first water discharge unit 4a is started, so the process in the flowchart proceeds from step S9 to S13.

  In step S <b> 13, the controller 40 sends a signal to the functional water solenoid valve 30 to close the valve and stop energization of the electrolytic cell 38. Thereby, spraying of the electrolyzed water from the 2nd water discharging part 4b is stopped. As described above, when the water discharge from the first water discharger 4a is started before the functional water discharge time T2 elapses during the spraying of the electrolyzed water, the controller 40 causes the electrolyzed water from the second water discharger 4b. Stop spraying. That is, in the state where water is discharged from the first water discharger 4a, even if the electrolyzed water is sprayed, it is washed away, and the electrolyzed water is wasted.

  After step S13, in the flowchart of FIG. 5, the processes of steps S3 → S5 → S3 are repeated until the water discharge from the first water discharger 4a is stopped. Next, when water discharge from the first water discharger 4a is stopped at time t20 in FIG. 8, the process in the flowchart proceeds to step S4, and thereafter, steps S4 → S3 → S4 until a predetermined standby time T1 elapses. The process is repeated.

  Next, when the standby time T1 elapses at time t21 in FIG. 8, the process in the flowchart proceeds to step S6, and spraying of electrolytic water from the second water discharger 4b is started. Further, when the functional water discharge time T2 elapses at time t22, the spraying of the electrolyzed water is stopped, the integrated value of the detection time is reset, and one process of the flowchart shown in FIG. 5 is ended.

  According to the wash basin 1 of the embodiment of the present invention, functional water is discharged when the time during which the proximity sensor 18 detects the approach of the object to be detected exceeds a predetermined time, so that, for example, a toothbrush is wetted, etc. Thus, functional water is not discharged every time there is water discharge for an extremely short time, and it is possible to prevent useless discharge of functional water. In addition, when the time when the proximity sensor 18 detects the approach of the object to be detected is equal to or longer than a predetermined time, the functional water is discharged. Functional water can be discharged at the timing, and propagation of germs in the bowl part and the drain outlet can be effectively suppressed while realizing water saving. Furthermore, since waste of electrolyzed water is suppressed, consumption of electrodes and the like for generating electrolyzed water and wasteful power consumption can be suppressed.

  Furthermore, according to the wash basin 1 of this embodiment, the sum total of the time when the approach of the detected object was detected by the proximity sensor after the previous water discharge from the second water discharge unit 4b is equal to or greater than the predetermined water discharge execution time τ1. (Time t4 in FIG. 6, time t9 in FIG. 7, time t16 in FIG. 8), since water is discharged from the second water discharger 4b, after sterilization or sterilization by the previous discharge of electrolyzed water Electrolyzed water can be discharged after the washstand 1 has been used to some extent, and the bowl portion 2 can be sterilized or sterilized at an appropriate interval.

  Moreover, according to the washbasin 1 of this embodiment, since the water discharge from the 2nd water discharge part 4b is started after the water discharge from the 1st water discharge part 4a is complete | finished, electrolyzed water is discharged while tap water is discharged. Is not discharged. According to this embodiment, the electrolyzed water can be prevented from being diluted, and the bowl portion 2 can be effectively sterilized or sterilized with a small amount of electrolyzed water.

  Furthermore, according to the wash basin 1 of this embodiment, after completion of water discharge from the first water discharger 4a, water discharge from the second water discharger 4b is started after a predetermined waiting time T1 has elapsed ( At time t6 in FIG. 6, time t13 in FIG. 7, time t18, t21 in FIG. 8), water discharge from the first water discharge section 4a is stopped while the user is using the wash basin 1. The probability that electrolyzed water is discharged in a state can be reduced, and waste of electrolyzed water can be prevented. Further, when the approach sensor detects the approach of the object to be detected during the standby time and water is discharged from the first water discharger 4a (time t11 in FIG. 7), the water discharge ends (FIG. 7). After time t12), the electrolyzed water is discharged after the waiting time T1 elapses. Therefore, the tap water discharged to the bowl portion 2 is sufficiently discharged from the drain port 2a, and then the electrolyzed water is discharged. Can be discharged, and even in the vicinity of the drain port 2a, it can be sufficiently sterilized or sterilized by the electrolyzed water.

  Further, according to the washstand 1 of the present embodiment, the time during which the proximity sensor detects the approach of the object to be detected once exceeds the predetermined water discharge execution time τ1 (time t9 in FIG. 7), and the predetermined standby time. When water is discharged from the first water discharger 4a while waiting for the passage of T1 (time t11 in FIG. 7), the water discharge time (detection time at times t11 to t12 in FIG. 7) is Even if it is less than the predetermined water discharge execution time τ1, water discharge from the second water discharge unit 4b is executed (from time t13 in FIG. 7). For this reason, the frequency which discharges electrolyzed water from the 2nd water discharging part 4b does not fall too much, and it can suppress the propagation of miscellaneous bacteria, preventing waste of electrolyzed water.

  As mentioned above, although preferable embodiment of this invention was described, a various change can be added to embodiment mentioned above. In particular, in the embodiment described above, the time during which the proximity sensor 18 detects the approach of the object to be detected is integrated, and when the integrated detection time becomes equal to or greater than the predetermined water discharge execution time τ1, the functional water is used. Although the water has been discharged, the functional water is discharged only when the time from when the proximity sensor 18 detects the approach of the object to be detected until the approach is no longer detected becomes equal to or longer than the predetermined water discharge execution time τ1. The present invention can also be configured. In this case, the time until the approach sensor 18 detects the approach of the object to be detected until the approach is no longer detected is counted by the controller 40, and when the measured time is less than the water discharge execution time τ1. When the detection time is reset (detection time count reset) and the measured detection time is equal to or greater than the water discharge execution time τ1, the controller 40 may be configured to execute step S3 and subsequent steps in the flowchart of FIG. .

DESCRIPTION OF SYMBOLS 1 Wash-basin according to embodiment of this invention 2 Bowl part 2a Drain outlet 4 Faucet device unit 4a 1st water discharge part 4b 2nd water discharge part 6 Lower cabinet 8 Upper cabinet 10 Flow control and temperature control valve 10a Operation lever 12 Operation Switch 14 Touch switch 16 LED for illumination
18 Proximity sensor 20a Water supply pipe 20b Hot water supply pipe 22a Water stop cock 22b Water stop cock 24a Filter 24b Filter 28a Solenoid valve for water (first solenoid valve)
28b Solenoid valve for hot water (first solenoid valve)
30 Functional water solenoid valve (second solenoid valve)
32 Pressure regulating valve 34 Safety valve 36 Check valve 38 Electrolytic tank 40 Controller (control unit)
42 AC power supply

Claims (5)

A wash basin capable of discharging tap water and functional water having a sterilizing action,
A bowl portion having a drain, and
A first water discharger for discharging tap water to the bowl part;
A first solenoid valve for switching between water discharge and water stoppage from the first water discharger;
A second water discharger for discharging functional water having a sterilizing action to the bowl part;
A second solenoid valve for switching between water discharge and water stoppage from the second water discharger;
An proximity sensor for detecting the approach of the object to be detected to the first water discharger;
A controller that opens the first electromagnetic valve and discharges tap water while the approach of the object to be detected is detected by the proximity sensor;
The control unit controls the second electromagnetic valve to discharge water from the second water discharging unit when the time during which the approach sensor detects the approach of the detected object is a predetermined time or more. The wash basin, wherein the water discharge from the second water discharge unit is not executed when the time for detecting the approach of the object to be detected is less than the predetermined time.   After the previous water discharge from the second water discharge unit ends, the control unit, when the total time during which the approach sensor detects the approach of the detected object is equal to or greater than a predetermined water discharge execution time, The wash basin according to claim 1, wherein water is discharged from the two water discharge portions.   The said control part is a washstand of Claim 1 or 2 which starts the water discharge from a said 2nd water discharge part, after the water discharge from a said 1st water discharge part is complete | finished.   The controller is configured to wait for the elapse of a predetermined waiting time after the end of water discharge from the first water discharger and to start water discharge from the second water discharger, and before the standby time elapses. In addition, when the proximity sensor detects the approach of the object to be detected, water is discharged from the first water discharger, and after the water discharge ends, the waiting time elapses, The washstand of Claim 3 which starts the water discharge from a 2nd water discharge part.   In the case where water discharge by the first water discharge unit is performed during the standby time, the control unit also performs the above operation after the end of water discharge even when the water discharge time is less than the predetermined water discharge execution time. The washbasin according to claim 4, wherein water discharge from the second water discharge unit is started.

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