JP6826312B2 - Wash basin - Google Patents

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, hand washing, etc., functional water having a sterilizing action is sprayed into the wash basin. That is, when the user uses the wash basin, the user prevents the germs washed away by hand washing etc. from adhering to the wash bowl and propagating the germs on the bowl surface of the wash bowl or on the drain port. After using the wash basin, functional water is sprayed into the wash bowl.

Japanese Unexamined Patent Publication No. 2016-108733 (Patent Document 1) describes an automatic faucet device that automatically discharges water when an object to be detected is detected. In this automatic faucet device, when an object to be detected is detected, functional water is sprayed onto a hand-washing bowl for a predetermined time, and then tap water is started to be discharged. After that, when the object to be detected is no longer detected, the spouting of tap water is stopped, and 3 seconds later, the functional water is sprayed again on the hand-washing bowl for a predetermined time. This prevents germs from growing on the bowl surface of the hand-washing bowl and on the drain port.

Japanese Unexamined Patent Publication No. 2016-108733

Here, for example, when brushing teeth in a washbasin, first wet the toothbrush with a small amount of water, and then add water for gargling to the cup. In addition, after brushing your teeth with a toothbrush, gargle and rinse around your mouth, and finally rinse your toothbrush and gargled cup with water. In this way, even if the user simply uses the wash basin to brush his teeth, tap water will be repeatedly spouted and stopped. When considering the actual use of the wash basin, there are extremely many actions such as wetting the shave, washing the shave, washing the face, washing the contact lenses, etc., in which tap water is frequently spouted and stopped.

In this way, if the user uses the wash basin once and repeatedly spouts tap water and functional water that has a sterilizing effect each time it is stopped, the wash basin is sterilized. It requires a lot of functional water, which is not preferable from the viewpoint of water saving. In addition, among the above operations, it is unlikely that many germs will adhere to the wash bowl, especially in the work of wetting the toothbrush with a small amount of water. Furthermore, even immediately after the toothbrush is wet with water at the start of brushing, tap water is repeatedly spouted by the operation of washing the toothbrush and the cup, so that the washbasin with the functional water discharged after such work is used. The effect of disinfecting the bowl is almost wasted by the discharge of tap water by the next operation. Further, 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.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a wash basin capable of keeping a bowl portion clean while suppressing wasteful discharge of functional water. There is.

In order to solve the above-mentioned problems, the present invention is a washbasin capable of discharging tap water and functional water having a sterilizing action, and discharges tap water to a bowl portion having a drain port and the bowl portion. A first water spouting unit for this purpose, a first electromagnetic valve for switching between water discharge and water stoppage from the first water spouting unit, and a second water discharge unit for discharging functional water having a sterilizing action to the bowl portion. By the water discharge part, the second electromagnetic valve for switching between water discharge and water stoppage from the second water discharge part, the approach sensor for detecting the approach of the object to be detected to the first water discharge part, and this approach sensor. While the approach of the object to be detected is detected, the control unit has a control unit that opens the first electromagnetic valve and discharges tap water, and the control unit detects the approach of the object to be detected by the approach sensor. If the time spent is longer than the specified time, the second electromagnetic valve is controlled to discharge water from the second water discharge unit, and the time for detecting the approach of the object to be detected is less than the predetermined time. In some cases, the water discharge from the second water discharge unit is not executed , and the control unit waits for the elapse of a predetermined waiting time after the completion of the water discharge from the first water discharge unit, and then the water discharge from the second water discharge unit. If the approach sensor detects the approach of the object to be detected before the waiting time elapses, water is discharged from the first water spouting unit, and the line is performed before the waiting time elapses. Even if the spouting time of the water spouted by the first spouting portion is less than a predetermined time, after the spouting is completed, the waiting time elapses and the spouting of the water spouting from the second spouting portion is started. It is characterized by.

In the present invention configured as described above, the approach sensor detects the approach of the object to be detected to the first water discharge unit, and the control unit is the first while the approach sensor detects the approach of the object to be detected. The solenoid valve of 1 is opened. As a result, tap water is discharged from the first water discharge portion to the bowl portion having the drain port. On the other hand, the spouting and stopping of the functional water having a sterilizing action from the second spouting portion is switched by the second solenoid valve. When the time during which the approach sensor detects the approach of the object to be detected is longer than a predetermined time, the control unit controls the second solenoid valve to discharge water from the second water discharge unit, and receives water. If the time during which the approach of the detected object is detected is less than a predetermined time, the water discharge from the second water discharge unit is not executed.

According to the present invention configured in this way, when the time during which the approach sensor detects the approach of the object to be detected exceeds a predetermined time, the functional water is discharged, so that, for example, the toothbrush is wetted. It is possible to prevent unnecessary discharge of functional water by preventing the discharge of functional water every time there is water discharge for an extremely short time. Further, when the time when the approach sensor detects the approach of the object to be detected exceeds a predetermined time, the functional water is discharged. Therefore, for example, when the user finishes brushing one tooth, the timing is appropriate. The functional water can be discharged with the water, and the growth of various germs in the bowl and the drain can be effectively suppressed while saving water. Further, when the electrolyzed water is used as the functional water, the waste of the electrolyzed water is suppressed, so that it is possible to suppress the consumption of electrodes and the like for generating the electrolyzed water and the wasteful consumption of electric power.
Further, 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 completed, the functional water is also discharged while the tap water is discharged. It will not be discharged. Here, when tap water and functional water are discharged at the same time, the functional water is diluted by tap water on the surface of the bowl portion and the drain port, so that the sterilization or sterilization effect of the functional water is diminished. It ends up. According to the present invention configured as described above, it is possible to prevent the functional water from being diluted, and it is possible to effectively sterilize or sterilize the bowl portion with a small amount of functional water.
Further, according to the present invention configured as described above, after the completion of the water discharge from the first water discharge unit, the water discharge from the second water discharge unit is started after a predetermined waiting time elapses. It is possible to reduce the probability that the functional water will be discharged while the person is using the wash basin while the water discharge from the first water discharge unit is stopped, and prevent the waste of the functional water. Can be done. In addition, 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 discharge unit, the functional water waits for the waiting time to elapse after the water discharge is completed. Since it is discharged, the tap water that has been discharged into the bowl portion can be sufficiently discharged from the drain port, and then the functional water can be discharged, and even in the vicinity of the drain port, the functional water can sufficiently sterilize or disinfect. Can be sterilized.
Further, according to the present invention configured as described above, the time during which the approach sensor detects the approach of the object to be detected is once longer than the predetermined water discharge execution time, and while waiting for the elapse of the predetermined waiting time. When water is discharged from the first water discharge unit, the water is discharged from the second water discharge unit even if the water discharge time is less than the predetermined water discharge execution time. Therefore, the frequency of discharging the functional water from the second water discharge portion does not decrease too much, and it is possible to effectively suppress the growth of various germs while preventing the waste of the functional water.

In the present invention, preferably, in the control unit, the total time during which the approach of the object to be detected is detected by the approach sensor after the previous water discharge from the second water discharge unit is completed is equal to or longer than the predetermined water discharge execution time. Then, water discharge from the second water discharge unit is executed.

According to the present invention configured in this way, when the total time during which the approach of the object to be detected is detected by the approach sensor after the previous water discharge from the second water discharge unit becomes equal to or longer than the predetermined water discharge execution time, Since the water is discharged from the second water discharge part, the functional water can be discharged after the wash basin has been used to some extent after sterilization or sterilization by the previous discharge of the functional water, and the bowls can be discharged at appropriate intervals. The part can be sterilized or sterilized.

According to the wash basin of the present invention, the bowl portion can be kept clean while suppressing wasteful discharge of functional water.

It is a perspective view which shows the appearance of the whole wash basin by embodiment of this invention. It is an enlarged perspective view which shows the faucet apparatus unit provided in the wash basin of embodiment of this invention. It is a perspective view of the faucet device unit provided in the wash basin of the embodiment of this invention seen 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 provided in the wash basin of embodiment of this invention. It is a time chart which shows an example of the control by the controller provided in the wash basin of embodiment of this invention. It is a time chart which shows another example of control by the controller provided in the wash basin of embodiment of this invention. It is a time chart which shows another example of control by the controller provided in the wash basin of embodiment of this invention.

Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
First, the overall configuration of the wash basin according to the embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG. 1 is a perspective view showing the appearance of the entire wash basin according to the embodiment of the present invention. FIG. 2 is an enlarged perspective view showing a faucet device unit provided in the wash basin according to the embodiment of the present invention. FIG. 3 is a perspective view of the faucet device unit viewed from diagonally below. FIG. 4 is a block diagram showing a water discharge system in a washbasin according to an embodiment of the present invention.

As shown in FIG. 1, the wash basin 1 according to the embodiment of the present invention is provided below the bowl portion 2, the faucet device unit 4 arranged above the bowl portion 2, and the bowl portion 2. It has a lower cabinet 6 that supports the portion 2 and an upper cabinet 8 that is arranged above the faucet unit 4.

The bowl portion 2 is a substantially rectangular wash bowl arranged so as to receive tap water discharged from the faucet device unit 4, and a drain port 2a is provided at the center and the back side thereof. In addition, in this specification, "tap water" shall include not only city water provided by a water supply company but also well water used for washing a washbasin, hand washing, etc.

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

The lower cabinet 6 is a cabinet that is arranged below the bowl portion 2 and supports the bowl portion 2, and is provided with two drawers. Further, inside the lower cabinet 6, devices such as a solenoid valve for switching tap water discharge and stop are housed. Details of the equipment housed 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. 2 and 3.
As shown in FIG. 2, the faucet device unit 4 includes a first water discharge unit 4a, a second water discharge unit 4b, a flow control / temperature control valve 10, an operation switch 12, a touch switch 14, and the like. The lighting LED 16 and the like are provided.

The first water discharge portion 4a is composed of a cylindrical member provided diagonally forward in the center of the lower surface of the faucet device unit 4, and tap water used for washing a washbasin, hand washing, etc. is directed toward the bowl portion 2. It is configured to discharge. Further, an approach sensor 18 is provided on the front side surface of the first water discharge unit 4a, and is configured to detect the approach of an object to be detected such as a finger to the first water discharge unit 4a. In the present embodiment, the approach sensor 18 is an infrared sensor, and is configured to detect the approach of the fingers or the like by detecting the infrared rays reflected by the fingers or the like approaching the first water discharge unit 4a. ing. As the proximity sensor, any non-contact type sensor such as an infrared type sensor or a microwave type sensor can be used. In the present embodiment, the first water discharge unit 4a is a pull-out type and is configured to be able to be pulled out from the faucet device unit 4.

The second water discharge unit 4b is a water discharge unit provided on the side and in the vicinity of the first water discharge unit 4a, and sprays (discharges) functional water having a sterilizing action toward the bowl portion 2 at a predetermined timing. ) 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 outflow rate of the mixed hot water, and is a faucet device. It is housed in the right end of the unit 4. An operation lever 10a is attached to the flow control / temperature control valve 10, and the operation lever 10a projects downward from the lower surface of the faucet device unit 4. In the present embodiment, the flow rate of the hot water discharged from the first water discharge unit 4a can be adjusted by operating the operation lever 10a in the front-rear direction, and the temperature of the hot water can be adjusted by operating the operation lever 10a in the left-right direction. ..

The operation switch 12 is a switch provided on the front left side of the faucet device unit 4. By operating the operation switch 12, the lighting LED 16 can be switched on and off, and the function of discharging the functional water from the second water discharge unit 4b can be switched on and off.
The touch switch 14 is a switch provided on the front right side 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 discharge unit 4a as an automatic faucet.
The lighting LEDs 16 are LEDs provided at two locations on the lower surface and the back side of the faucet device unit 4, and are configured to illuminate the hands of the user who uses the wash basin 1.

Next, the water supply / hot water supply system in the wash basin 1 according to the embodiment of the present invention will be described with reference to FIG.
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 water stop valve 22a for shutting off tap water, and a foreign substance mixed in tap water are removed. Filter 24a, and a water electromagnetic valve 28a, which is a first electromagnetic valve for switching between discharge and stop of tap water from the first water discharge unit 4a, are provided. 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) or the like, a water stop valve 22b for shutting off hot water, and a foreign matter mixed in are removed. The filter 24b and a hot water solenoid valve 28b, which is a first solenoid valve for switching between discharging and stopping hot water from the first water discharge unit 4a, are provided.

The water and hot water supplied through the water supply system and the hot water supply system are mixed at a predetermined ratio by the flow control / temperature control valve 10 and discharged from the first water discharge unit 4a.

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

Next, the generation and discharge system of the functional water discharged from the second water discharge unit 4b will be described.
As shown in FIG. 4, the tap water supplied from the water supply pipe 20a is branched into two pipelines on the downstream side of the filter 24a, one is connected to the water solenoid valve 28a, and the other is the second solenoid valve. It is connected to the solenoid valve 30 for functional water. As described below, functional water having a sterilizing action is generated from tap water that has passed through the solenoid valve 30 for functional water, and is discharged from the second water discharge unit 4b. The controller 40 controls the opening and closing of the functional water solenoid valve 30 by the control signal, opens the functional water solenoid valve 30 at a predetermined timing, and discharges the functional water from the second water discharge unit 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 solenoid valve 30 for functional water in this order from the upstream side.
The pressure regulating valve 32 is configured to adjust the pressure of tap water flowing in from the solenoid valve 30 for functional water and let it flow out. The tap water flowing in from the solenoid valve 30 for functional water is adjusted by the pressure regulating valve 32 to a pressure suitable for atomizing and spraying from the second water discharge portion 4b.

The safety valve 34 is configured to allow tap water in the pipeline to escape to the downstream side of the water solenoid valve 28a when the pressure in the pipeline for supplying functional water exceeds a predetermined pressure. For example, when the spout of the second spout 4b is blocked and the pressure in the pipeline rises sharply, the safety valve 34 is opened and the water in the pipeline is used for water via the bypass flow path 34a. It flows out to the pipeline on the downstream side of the solenoid valve 28a. Since the tap water that has passed through the bypass flow path 34a is discharged from the first water discharge portion 4a through the flow control / temperature control valve 10, it is necessary to prevent the pressure in the pipeline from rising above a predetermined pressure. Can be done.
The check valve 36 is provided in the pipeline between the safety valve 34 and the electrolytic cell 38, and is configured to prevent the electrolyzed water in the electrolytic cell 38 from flowing back to the safety valve 34 side.

The electrolytic cell 38 is configured to electrolyze the supplied tap water to generate electrolyzed water, which is functional water. The controller 40 controls energization and stoppage of the electrolytic cell 38, and applies a voltage between electrodes (not shown) in the electrolytic cell 38 at a predetermined timing to generate electrolyzed water. The electrolyzed water used in the present embodiment may be any water having a sterilizing function obtained by electrolysis. A typical example of electrolyzed water is electrolyzed water containing hypochlorous acid. Generally, clean water or medium water contains chlorine ions, so free chlorine is generated by electrolysis. Free chlorine, the acidic present as hypochlorous acid (HClO), in this embodiment hypochlorite is present the form of alkaline (ClO ^-) and about 10 times stronger bactericidal power compared. Moreover, even if it is neutral, a strong bactericidal power in the middle can be obtained. Therefore, the water electrolyzed in the continuous electrolysis tank is sterilizing water having a strong sterilizing power.

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

As the electrode used for chlorine generation, one in which a chlorine generation catalyst is supported on a conductive base material or a conductive material made of a chlorine generation catalyst is used. Depending on the type of chlorine generation catalyst, 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, and iridium-platinum-based electrodes. , Luthenium-platinum-based electrode, iridium-platinum-tantal electrode, etc. A conductive base material on which a chlorine generation catalyst is supported is advantageous in terms of manufacturing cost because the base material portion responsible for the structure can be made of an inexpensive material such as titanium or stainless steel.

In addition to chlorine, it may be hypochlorous acid obtained by electrolyzing water containing halogen ions.
Examples of other electrolyzed water include silver ionized water obtained by using silver as an electrode. It is said that silver ions are adsorbed on enzymes on the cell membrane of bacteria and inhibit the action of the enzymes, so that the bacteria cannot sustain their lives. It also has the effect of coating the surface of the base material that comes into contact, making it difficult for bacteria to grow on the surface of the base material. Since silver ions can coat the surface of the base material to prevent the adhesion of bacteria and have bactericidal activity, the growth of bacteria on the surface of the base material can be effectively suppressed. At that time, by combining with a cleaning method that increases the replacement rate of the drain trap, it is possible to suppress the sliminess and odor of the drain port for a long period of time.

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

Further, examples of the sterilized water other than the electrolyzed water include an aqueous solution in which various sterilizing components are dissolved. As the sterilizing component to be dissolved, any of solid, liquid and gas may be used. When a liquid sterilizing component is used, for example, ethanol, alcohols such as isopropanol, hydrogen peroxide, or the like may be applied. When a gas sterilizing component is used, for example, ozone water may be produced by dissolving ozone as fine bubbles in water. When a solid sterilizing component is used, for example, sodium hypochlorite or the like may be applied.

The various electrolyzed water and sterilized water described above correspond to the "functional water" in the present invention. Here, in the present specification, the word "sterilization" not only means to reduce bacteria (in this case, it includes not only the meaning of removing and reducing bacteria but also the meaning of killing and reducing bacteria). It is used as a broad concept that includes the meaning of suppressing the growth of bacteria even if it does not reduce. The "functional water" in the present invention means water in which a sterilizing function in this sense is added to ordinary water by a predetermined treatment.
In the present embodiment, an example in which electrolyzed water is used as the functional water in the present invention will be described, but the above-mentioned sterilized water other than electrolyzed water may be used instead of the electrolyzed water. Needless to say.

Next, the operation of the wash basin 1 according to the embodiment of the present invention will be described with reference to FIGS. 5 to 8.
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. From the top, the presence / absence of detection by the approach sensor 18, the opening / closing of the water solenoid valve 28a and the hot water solenoid valve 28b, the integrated value of the detection time, and the function. The opening and closing of the water solenoid valve 30 is shown respectively. 7 and 8 are time charts showing other examples of control by the controller 40.
The control flowchart shown in FIG. 5 is activated when the approach sensor 18 detects an object to be detected in a state where the discharge of electrolyzed water (functional water) by the second water discharge unit 4b is completed (detection time count = 0). It is a flowchart.

First, at time t1 in FIG. 6, when the user of the wash basin 1 brings his or her finger close to the vicinity of the first water discharge unit 4a, the approach sensor 18 detects this. When the proximity sensor 18 detects an object to be detected, the controller 40 sends a control signal to the water solenoid valve 28a and the hot water solenoid valve 28b to open them. When the water solenoid valve 28a is opened, the tap water supplied from the water supply pipe 20a reaches the water solenoid valve 28a through the water stop valve 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 water stop valve 22b and the filter 24b, and the flow control / temperature control valve 10 Inflow to.

The tap water and hot water that have flowed into the flow control / temperature control valve 10 are mixed here and discharged from the spout of the first spout portion 4a toward the bowl portion 2. 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 operating lever 10a in the left-right direction. Further, 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 operating lever 10a in the front-rear direction. The hot water flowing out from the flow control / temperature control valve 10 is discharged from the first water discharge unit 4a. When the proximity sensor 18 detects a finger or the like and opens the water solenoid valve 28a and the hot water solenoid valve 28b, water is discharged from the first water discharge unit 4a (second stage in FIG. 6, time). t1 to t2) are integrated in the controller 40.

That is, when the approach sensor 18 detects the object to be detected at the time t1 of FIG. 6, the flowchart shown in FIG. 5 is executed, and the water discharge time (detection time) is integrated by the timer (not shown) built in the controller 40. Is started (step S1 in the flowchart of FIG. 5). As a result, the integration 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 longer than the 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. Is done. In this embodiment, the predetermined water discharge execution time τ1 is 3 seconds.

At time t2 in FIG. 6, when the user moves his / her finger away from the first water discharge unit 4a, the proximity sensor 18 does not detect the object to be detected, so that the controller 40 uses the water solenoid valve 28a and the hot water solenoid valve 28b. Close the valve. As a result, 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. Since the detection time between the times t1 to t2 in FIG. 6 is a short time less than the predetermined water discharge execution time τ1, electrolysis from the second water discharge unit 4b after the water discharge is stopped at the time t2. No water is sprayed. That is, since it is estimated that the amount of water discharged at times t1 to t2 is small, there is a high possibility that the bowl portion is not very dirty, and the user may continuously discharge water. Not done.

Further, at the time t3 of FIG. 6, when the user brings his / her finger closer to the first water discharge portion 4a again, the controller 40 opens the water solenoid valve 28a and the hot water solenoid valve 28b. As a result, the integration by the controller 40 is started again, and the integration time starts to increase again (time t3 to FIG. 6). Next, when the integration time reaches 3 seconds at the time t4 of FIG. 6, the process in the flowchart of FIG. 5 shifts 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 discharge unit 4a. If water is not discharged, the process proceeds to step S4, and if water is discharged, the processes of steps S3 → S5 → S3 are repeatedly executed. The "waiting time reset" in step S5 will be described later.
Next, at time t5 of FIG. 6, when the approach sensor 18 stops detecting the object to be detected, the controller 40 closes the water solenoid valve 28a and the hot water solenoid valve 28b, and the water discharge is stopped. When the water discharge is stopped, the process in the flowchart of FIG. 5 shifts from step S3 to step S4.

In step S4, it is determined whether or not the predetermined standby time T1 at which the integration is started has elapsed from the time when 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, if the approach sensor 18 does not detect the object to be detected after the water discharge is stopped at time t5, the processes of steps S4 → S3 → S4 are repeatedly executed until the standby time T1 elapses. In this embodiment, the standby time T1 is 5 seconds.

When the waiting time T1 elapses at the time t6 of FIG. 6, the process in the flowchart of FIG. 5 shifts from step S4 to step S6. In the process of step S6 or lower, spraying of electrolyzed water from the second water discharge unit 4b is executed. As described above, the water discharge time (detection time) between the time t3 and t5, which is the latest water discharge, is short, which is less than the predetermined water discharge execution time τ1, but the water discharge after the previous spraying of the electrolytic water was performed. Since the integrated time (integrated time after time t1) is equal to or longer than the water discharge execution time τ1, after the water discharge is stopped at time t5, the electrolyzed water is sprayed after the waiting time T1 elapses. Further, the water discharge from the first water discharge unit 4a is stopped at time t5, but immediately after the water discharge is stopped, the user has not finished using the wash basin 1 and the water may be discharged again. Therefore, after the water discharge is stopped at time t5, the electrolyzed water is sprayed after waiting for the elapse of the waiting time T1.

In step S6, the controller 40 sends a signal to the functional water solenoid valve 30 to open the valve. Next, in step S7, the controller 40 applies a voltage to the electrodes (not shown) of the electrolytic cell 38. When the solenoid valve 30 for functional water is opened, the tap water supplied from the water supply pipe 20a reaches the solenoid valve 30 for functional water through the water stop valve 22a and the filter 24a. The tap water that has passed through the solenoid valve 30 for functional water flows into the electrolytic cell 38 through the pressure regulating valve 32 and the check valve 36. The tap water flowing into the electrolytic cell 38 is electrolyzed by the voltage (current) applied by the controller 40 to generate electrolyzed water. The generated electrolyzed water is made into a mist and sprayed from the second water spouting portion 4b to the bowl portion 2. The sprayed electrolyzed water sterilizes the surface of the bowl portion 2 and the drain port 2a, and suppresses the growth of various germs.

Next, in step S8 of FIG. 5, it is determined whether or not the predetermined functional water discharge time T2 has elapsed after the solenoid valve 30 for functional water is opened (after the time t6 of FIG. 6). 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), and if water is not discharged, step S8 is performed. If the water is discharged, the process proceeds to step S13. Therefore, if the proximity sensor 18 does not detect the object to be detected after the functional water solenoid valve 30 is opened at time t6, steps S8 → S9 → S8 until the functional water discharge time T2 elapses. Process is repeatedly executed. In this embodiment, the functional water discharge time T2 is 10 seconds.

Further, when the functional water discharge time T2 elapses at the time t7 of FIG. 6, the process in the flowchart of FIG. 5 shifts 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 S11, the controller 40 stops energizing the electrolytic cell 38. Further, in step S12, the controller 40 resets the integrated time of the detection time accumulated by the controller 40 to zero, and ends one process of the flowchart shown in FIG. When the water discharge from the first water discharge unit 4a is started after the processing of the flowchart shown in FIG. 5 is completed, the processing 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 approach sensor 18 detects the object to be detected at the time t8 of FIG. 7, the processing of the flowchart shown in FIG. 5 is started, and the integration of the detection time during which water is discharged from the first water discharge unit 4a is started. (Step S1 in FIG. 5). Next, when the integrated time exceeds the predetermined water discharge execution time τ1 at the time t9 of FIG. 7, the process in the flowchart shown in FIG. 5 shifts from step S2 to S3. Further, at the time t10 in FIG. 7, when the approach sensor 18 stops detecting the object to be detected, the water discharge from the first water discharge unit 4a is stopped. As a result, the process in the flowchart of FIG. 5 proceeds from steps S3 to S4, and the integration of the waiting time is started from the time t10. The waiting time at which the integration is started from the time t10 is integrated while the processes of steps S4 → S3 → S4 are repeated.

Next, at the time t11 of FIG. 7, when the approach sensor 18 detects the object to be detected before the predetermined standby time T1 elapses (before the accumulated standby time reaches T1), the controller 40 causes the controller 40. The water solenoid valve 28a and the hot water solenoid valve 28b are opened, and water discharge is started. As a result, in the flowchart shown in FIG. 5, the process of repeating steps S4 → S3 → S4 repeats steps S3 → S5 → S3. Here, in step S5, the accumulated waiting time is reset, so that the waiting time is not accumulated while the steps S3 → S5 → S3 are repeated (while water is being discharged) (standby). The integrated value of time does not increase).

Next, at time t12 in FIG. 7, when the approach sensor 18 stops detecting the object to be detected, the controller 40 closes the water solenoid valve 28a and the hot water solenoid valve 28b, and the water discharge is stopped. As a result, in the flowchart shown in FIG. 5, the process of repeating steps S3 → S5 → S3 now repeats steps S4 → S3 → S4, and the integration of the waiting time from the time t12 is started. Further, when the predetermined waiting time T1 elapses at the time t13 of FIG. 7 without water discharge during the integration of the waiting time, the process in the flowchart shown in FIG. 5 shifts from step S4 to S6. In the process of step S6 or less, the electrolyzed water is sprayed from the second water discharge unit 4b over the 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.

In this way, after the detection time (integrated time) in which the approach sensor 18 detects the object to be detected becomes the predetermined water discharge execution time τ1 or more (after the time t9 in FIG. 7), the predetermined standby time T1 is set. While waiting for the passage (time t10), if water is discharged again (time t11-1), the integrated value of the waiting time is reset, and after the water discharge is stopped (after time t12), the standby time is waited again. Time integration starts from zero (time t12 ~). Here, the water discharge (time t11 to t12) performed during standby is a short time less than the predetermined water discharge execution time τ1, but since the integrated 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), spraying of electrolytic water is executed after the elapse of the predetermined standby time T1 (after time t13) (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 approach sensor 18 detects the object to be detected at the time t15 in FIG. 8, the processing of the flowchart shown in FIG. 5 is started, and the controller 40 starts the integration of the detection time (step S1 in FIG. 5). Next, when the integrated time exceeds the predetermined water discharge execution time τ1 at the time t16 of FIG. 8, the process in the flowchart shifts from step S2 to S3, and at the time t17, the water discharge from the first water discharge unit 4a is stopped. .. As a result, the processing in the flowchart proceeds from steps S3 to S4, the integration of the waiting time is started from the time t17, and the predetermined waiting time T1 elapses at the time t18.

When the standby time T1 elapses at the time t18, the process in the flowchart of FIG. 5 shifts from step S4 to S6, and spraying of electrolyzed water from the second water discharge unit 4b is started. While the spraying of the electrolyzed water is being executed, the processes of steps S8 → S9 → S8 are repeated in the flowchart. The spraying of the electrolyzed water is to continue the predetermined functional water discharge time T2 from the start of spraying, but in the example shown in FIG. 8, the approach sensor 18 is before the functional water discharge time T2 elapses from the start of spraying at time t18. The object to be detected is detected by (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 that the process in the flowchart shifts from step S9 to S13.

In step S13, the controller 40 sends a signal to the functional water solenoid valve 30, closes the valve, and stops the energization of the electrolytic cell 38. As a result, the spraying of the electrolyzed water from the second water discharge unit 4b is stopped. As described above, if the water discharge from the first water discharge unit 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 discharge unit 4b. Stop spraying. That is, in the state where the water is discharged from the first water discharge unit 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 discharge unit 4a is stopped. Next, when the water discharge from the first water discharge unit 4a is stopped at the time t20 in FIG. 8, the process in the flowchart shifts to step S4, and thereafter, steps S4 → S3 → S4 until a predetermined standby time T1 elapses. Process is repeated.

Next, when the standby time T1 elapses at the time t21 in FIG. 8, the process in the flowchart shifts to step S6, and the spraying of the electrolyzed water from the second water discharge unit 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 completed.

According to the wash basin 1 of the embodiment of the present invention, when the time during which the approach sensor 18 detects the approach of the object to be detected exceeds a predetermined time, the functional water is discharged, so that, for example, the toothbrush is wetted. However, the functional water is not discharged every time the water is discharged for a very short time, and the wasteful discharge of the functional water can be prevented. Further, when the time when the approach sensor 18 detects the approach of the object to be detected exceeds a predetermined time, the functional water is discharged, so that it is appropriate, for example, when the user finishes brushing one tooth. The functional water can be discharged at the timing, and while saving water, the growth of various germs in the bowl portion and the drain port can be effectively suppressed. Further, since the waste of electrolyzed water is suppressed, it is possible to suppress the consumption of electrodes and the like for generating electrolyzed water and the consumption of wasteful electric power.

Further, according to the wash basin 1 of the present embodiment, the total time during which the approach of the object to be detected is detected by the approach sensor after the previous water discharge from the second water discharge unit 4b is the predetermined water discharge execution time τ1 or more. (Time t4 in FIG. 6, time t9 in FIG. 7, time t16 in FIG. 8), water is discharged from the second water discharge unit 4b, so that after sterilization or sterilization by the previous discharge of electrolyzed water. The electrolyzed water can be discharged after the wash basin 1 has been used to some extent, and the bowl portion 2 can be sterilized or sterilized at appropriate intervals.

Further, according to the wash basin 1 of the present embodiment, after the water discharge from the first water discharge unit 4a is completed, the water discharge from the second water discharge unit 4b is started, so that the electrolyzed water is discharged while the tap water is discharged. Is not discharged. According to this embodiment, it is possible to prevent the electrolyzed water from being diluted, and it is possible to effectively sterilize or sterilize the bowl portion 2 with a small amount of electrolyzed water.

Further, according to the wash basin 1 of the present embodiment, after the water discharge from the first water discharge unit 4a is completed, the water discharge from the second water discharge unit 4b is started after a predetermined waiting time T1 elapses ( Since the time t6 in FIG. 6, the time t13 in FIG. 7, and the time t18, t21 in FIG. 8), the water discharge from the first water discharge unit 4a is stopped while the user is using the wash basin 1. The probability that the electrolyzed water will be discharged in the state can be reduced, and the waste of the 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 discharge unit 4a (time t11 to FIG. 7), the water discharge is completed (FIG. 7). After the time t12), the electrolyzed water is discharged after waiting for the standby time T1 to elapse. 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 sufficiently sterilized or sterilized with electrolyzed water even in the vicinity of the drain port 2a.

Further, according to the wash basin 1 of the present embodiment, the time during which the approach sensor detects the approach of the object to be detected is once a predetermined water discharge execution time τ1 or more (time t9 in FIG. 7), and a predetermined standby time. If water is discharged from the first water discharge unit 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 set. Even if the predetermined water discharge execution time is less than τ1, water discharge from the second water discharge unit 4b is executed (time t13 to FIG. 7). Therefore, the frequency of discharging the electrolyzed water from the second water discharge unit 4b does not decrease too much, and it is possible to effectively suppress the growth of various germs while preventing the waste of the electrolyzed water.

Although the preferred embodiment of the present invention has been described above, various modifications can be made to the above-described embodiment. In particular, in the above-described embodiment, the time during which the approach sensor 18 detects the approach of the object to be detected is integrated, and when the integrated detection time becomes the predetermined water discharge execution time τ1 or more, the functional water Although water was discharged, the functional water was discharged only when the time from when the approach sensor 18 detected the approach of the object to be detected until the approach was not detected was the predetermined water discharge execution time τ1 or more. The present invention can also be configured. In this case, the controller 40 counts the time from when the approach sensor 18 detects the approach of the object to be detected until the approach is no longer detected, and when the measured time is less than the water discharge execution time τ1. , The detection time is reset (detection time count reset), and when the measured detection time is equal to or longer than the water discharge execution time τ1, the controller 40 may be configured to execute step S3 or less in the flowchart of FIG. ..

1 Wash basin according to the embodiment of the present invention 2 Bowl part 2a Drain port 4 Faucet device unit 4a First water discharge part 4b Second water discharge part 6 Lower cabinet 8 Upper cabinet 10 Flow control / temperature control valve 10a Operation lever 12 Operation Switch 14 Touch switch 16 LED for lighting
18 Approach sensor 20a Water supply pipe 20b Hot water supply pipe 22a Water stop valve 22b Water stop valve 24a Filter 24b Filter 28a Solenoid valve for water (first solenoid valve)
28b Solenoid valve for hot water (first solenoid valve)
30 Solenoid valve for functional water (second solenoid valve)
32 Pressure regulating valve 34 Safety valve 36 Check valve 38 Electrolytic cell 40 Controller (control unit)
42 AC power supply

Claims (2)

A wash basin that can discharge tap water and functional water that has a sterilizing effect.
A bowl with a drain and
The first water discharge part for discharging tap water to this bowl part, and
A first solenoid valve for switching between water discharge and water stoppage from the first water discharge unit, and
A second water spouting part for discharging functional water having a sterilizing action to the bowl part, and
A second solenoid valve for switching between water discharge and water stoppage from the second water discharge unit, and
An approach sensor that detects the approach of the object to be detected to the first water discharge unit, and
It has a control unit that opens the first solenoid valve and discharges tap water while the approach sensor detects the approach of the object to be detected.
When the time for detecting the approach of the object to be detected by the approach sensor is longer than a predetermined time, the control unit controls the second solenoid valve to discharge water from the second water discharge unit. If the time during which the approach of the object to be detected is detected is less than the predetermined time, the water discharge from the second water discharge unit is not executed .
The control unit is configured to wait for the elapse of a predetermined standby time after the end of water discharge from the first water discharge unit and to start water discharge from the second water discharge unit, and before the elapse of the standby time. In addition, when the approach sensor detects the approach of the object to be detected, water is discharged from the first water discharge unit, and water is discharged from the first water discharge unit before the waiting time elapses. Even if the water discharge time is less than the predetermined time , the wash basin is characterized in that after the water discharge is completed, the waiting time elapses and the water discharge from the second water discharge unit is started. .. When the total time during which the approach of the object to be detected is detected by the approach sensor after the previous water discharge from the second water discharge unit is completed, the control unit performs the second water discharge execution time or more. The wash basin according to claim 1, wherein water is discharged from the water discharge unit of 2.

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