JP7029103B2 - 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 washbasin, functional water is sprayed into the washbasin.

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 washbasin 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 to spout tap water that is repeated many times and functional water that has a sterilizing effect each time it is stopped, the wash bowl 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 basin, 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 due to 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 spouting 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-mentioned 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 discharge part for discharging water, a second water discharge part for discharging functional water having a sterilizing action to the bowl part, and an electromagnetic valve for switching between water discharge and water stoppage from the second water discharge part. A human body detection sensor that detects the user's approach to the wash basin in a range wider than the range that detects the user's finger to switch the water discharge stop, and an electromagnetic valve based on the detection signal by this human body detection sensor The control unit has a control unit that opens the valve and automatically discharges the functional water from the second water discharge unit, and the control unit has a second control unit when the approach of the user is detected by the human body detection sensor. Automatic water discharge from the water discharge part is prohibited , and the control unit changes from the state where the human body detection sensor detects the approach of the user to the state where the approach of the user is not detected, and then the electromagnetic valve. It is characterized in that the valve is opened and water is automatically discharged from the second water discharge unit .

In the present invention configured as described above, tap water is discharged from the first water discharge portion to the bowl portion having a drain port. On the other hand, the control unit controls the solenoid valve to switch between discharging and stopping the functional water having a sterilizing action from the second water discharging unit. The human body detection sensor detects the approach of the user to the washbasin, and the control unit automatically performs the function water from the second water discharge unit when the approach of the user is detected by the human body detection sensor. Prohibit spitting water.

According to the present invention configured as described above, when the user's approach to the washbasin is detected, the automatic spouting of the functional water from the second spouting portion is prohibited. It is possible to prevent the functional water from being discharged in a situation where a person is likely to restart the water discharge from the first water discharge unit, and it is possible to avoid wasting the functional water. That is, if the water is discharged from the first water discharge portion again immediately after the functional water is discharged, there is a high possibility that various germs will adhere to the bowl portion again, and the functional water is discharged again after the water discharge is completed. It is necessary, and the first spouted functional water is wasted. According to the present invention, it is possible to avoid such waste of functional water, and it is possible to effectively suppress the growth of various germs in the bowl portion and the drain port 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.

According to the present invention configured as described above, after the human body detection sensor changes from the state of detecting the approach of the user to the state of not detecting the approach of the user, the function is performed from the second water discharge unit. Since the water is automatically discharged, it is possible to reliably discharge the functional water in a situation where it is unlikely that the user will start using the washstand again immediately afterwards, and it is effective without wasting the functional water. It is possible to suppress the growth of various germs.

In the present invention, preferably, the control unit is configured to measure the time during which the human body detection sensor continuously detects the approach of the user, and when this time is less than the predetermined continuous approach time. , Do not perform automatic spouting from the second spouting part.

According to the present invention configured as described above, when the time during which the human body detection sensor continuously detects the approach of the user is less than the predetermined continuous approach time, the automatic from the second water discharge unit is performed. Since the water spouting is not performed, it is necessary to avoid unnecessary spouting of functional water in a situation where germs do not adhere to the bowl part, for example, when the user passes in front of the wash basin. Can be done. As a result, it is possible to effectively suppress the growth of various germs in the bowl portion and the drain port while saving water.

In the present invention, it is preferable to further have a water discharge sensor for detecting water discharge from the first water discharge unit, and the control unit has a first water discharge sensor while the human body detection sensor detects the approach of the user. When water discharge from the unit is not detected, the second water discharge unit is used even after the human body detection sensor changes from the state of detecting the approach of the user to the state of not detecting the approach of the user. Do not perform automatic spouting from.

According to the present invention configured as described above, if water is not discharged from the first water discharge portion while the human body detection sensor detects the approach of the user, the functional water is automatically automatically configured. Since the water is not discharged, it is possible to prevent the functional water from being discharged in a situation where bacteria do not adhere to the bowl portion, for example, when the user is using the dryer in front of the wash basin. .. As a result, it is possible to effectively suppress the growth of various germs in the bowl portion and the drain port while saving water.

In the present invention, preferably, the control unit waits for the elapse of a predetermined waiting time after changing from a state in which the human body detection sensor detects the approach of the user to a state in which the approach of the user is not detected. Then, water discharge from the second water discharge unit is started.

According to the present invention configured as described above, after the human body detection sensor is in the non-detection state, water discharge from the second water discharge unit is started after a predetermined waiting time elapses, so that the user can use it. It is possible to prevent the functional water from being discharged in a situation where the use of the wash basin is likely to be resumed in a short time, such as when the user leaves the front of the wash basin in the middle of using the wash basin. As a result, it is possible to effectively suppress the growth of various germs in the bowl portion and the drain port while saving water.

In the present invention, preferably, the control unit detects the approach of the user from the state where the human body detection sensor does not detect the approach of the user while waiting for the elapse of a predetermined waiting time. If it changes to, the integration of the waiting time is reset, and then when the human body detection sensor changes from the state of detecting the approach of the user to the state of not detecting the approach of the user, a new state is created. Start accumulating the waiting time.

According to the present invention configured as described above, if the human body detection sensor changes to the state of detecting the approach of the user while waiting for the elapse of a predetermined waiting time, the waiting time is reset. After that, when the human body detection sensor changes to a state in which the approach of the user is not detected, the integration of the waiting time is newly started. For this reason, even if the user temporarily leaves the wash basin many times, it is possible to prevent unnecessary discharge of functional water, and while saving water, bacteria in the bowl and drainage port can be prevented. Propagation can be effectively suppressed.

In the present invention, preferably, the human body detection sensor does not detect the approach of the user while the control unit opens the solenoid valve and automatically discharges the functional water from the second water discharge unit. When the state changes from the state of detecting the approach of the user, the solenoid valve is closed.

According to the present invention configured as described above, when the human body detection sensor changes to a state of detecting the approach of the user while the functional water is automatically discharged from the second water discharge portion. Since the solenoid valve is closed, it is possible to avoid the discharge of the functional water in the situation where the user starts to use the wash basin. As a result, the user can use the washbasin without any discomfort.

In the present invention, preferably, the control unit changes to a state in which the human body detection sensor detects the approach of the user during the discharge of the functional water from the second water discharge unit, and the discharge of the functional water is interrupted. , When the human body detection sensor changes to the state where it does not detect the approach of the user again, the automatic discharge of the functional water is started from the beginning.

According to the present invention configured in this way, the human body detection sensor changes to the state of detecting the approach of the user during the discharge of the functional water, and after the discharge of the functional water is interrupted, the human body detection sensor is again. When is changed to the state where the approach of the user is not detected, the automatic discharge of the functional water is started from the beginning. Therefore, even if the wash basin is used after the discharge of the functional water is interrupted, the discharge of the functional water is started from the beginning, so that a predetermined amount of the functional water can be reliably discharged after the wash basin is used. , It is possible to suppress the growth of germs in the bowl and drain.

In the present invention, it is preferable to further have a manual discharge switch for discharging the functional water from the second water discharge unit for a predetermined time based on the operation of the user, and the functional water is discharged by the operation of the manual discharge switch. If the human body detection sensor changes from a state in which the user's approach is detected to a state in which the user's approach is not detected, the control unit automatically discharges water from the second water discharge unit. do not do.

According to the present invention configured as described above, when the human body detection sensor changes to a state in which the approach of the user is not detected during the manual discharge of the functional water by the user, the functional water is automatically discharged. Since the automatic discharge of the functional water is not executed, it is possible to prevent the automatic discharge of the functional water from overlapping with the manual sterilization by the user, and it is possible to prevent the wasteful discharge of the functional water.

According to the wash basin of the present invention, the bowl portion can be kept clean while suppressing unnecessary spouting 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 the 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 the 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 the embodiment of this invention. It is a time chart which shows other example of the control by the controller provided in the washbasin of embodiment of this invention. It is a time chart which shows the other example of the control by the controller provided in the washbasin of the embodiment of this invention. It is a flowchart which shows the manual discharge process of the functional water in the controller provided in the wash basin of the embodiment of this invention. It is a time chart which shows an example of the case where the functional water is manually discharged in the wash basin of the embodiment of this invention. It is a figure which shows the operation part of the faucet device in the washbasin of the modified embodiment of this invention.

Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
First, with reference to FIGS. 1 to 4, the overall configuration of the washbasin according to the embodiment of the present invention will be described. FIG. 1 is a perspective view showing the appearance of the entire washbasin according to the embodiment of the present invention. FIG. 2 is an enlarged perspective view showing a faucet device unit provided in a washbasin according to an embodiment of the present invention. FIG. 3 is a perspective view of the faucet device unit as 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 located above the faucet unit 4.

The bowl portion 2 is a substantially rectangular wash basin 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 arranged below the bowl portion 2 and supporting 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, and a touch switch 14. 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, hand washing, etc. is directed toward the bowl portion 2. It is configured to discharge. Further, an approach sensor 18 which is a water discharge sensor is provided on the front side surface of the first water discharge unit 4a, and is configured to detect the approach of a detected object such as a finger to the first water discharge unit 4a. ing. Further, a human body detection sensor 19 for detecting the approach of the user to the wash basin 1 is provided on the front surface of the faucet device unit 4. 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.

In the present embodiment, the proximity sensor 18 is an infrared sensor, and detects infrared rays reflected by a finger or the like approaching the first water discharge portion 4a to detect the approach of the finger or the like. It is configured. Further, the human body detection sensor 19 is configured to detect the approach of the user when the user approaches the wash basin 1 within a predetermined distance in order to use the wash basin 1. In the present embodiment, a microwave sensor is used as the human body detection sensor 19, and the human body detection sensor 19 detects the approach of the human body in a range wider than the range in which the approach sensor 18 detects the approach of a finger or the like. It is configured as follows. That is, the human body detection sensor 19 is configured so that even a user who is at a distance farther than the distance by which the approach sensor 18 detects the approach of a finger or the like can be detected. As the proximity sensor, any non-contact type sensor such as an infrared type sensor or a microwave type sensor can be used, and as the human body detection sensor 19, an infrared type sensor or an arbitrary type sensor can be used in addition to the microwave type sensor. A non-contact type sensor can also be used.

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 operating lever 10a is attached to the flow control / temperature control valve 10, and the operating 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, it is possible to switch the lighting LED 16 on and off, and to switch on and off the function of automatically discharging the functional water from the second water discharge unit 4b. Further, by operating the operation switch 12, in addition to the automatic discharge of the functional water, the user can manually discharge the functional water from the second water discharge unit 4b. Therefore, the operation switch 12 functions as a manual discharge switch that discharges the functional water from the second water discharge unit 4b for a predetermined time based on the operation of the user.
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 perform water discharge and stop 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, with reference to FIG. 4, the water supply / hot water supply system in the washbasin 1 according to the embodiment of the present invention will be described.
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 foreign matter mixed in tap water are removed. The filter 24a and the water electromagnetic valve 28a for switching the 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) and the like, a water stop valve 22b for shutting off hot water, and a foreign substance mixed in the hot water supply system are removed. Filter 24b, and a hot water solenoid valve 28b for switching between discharge and stop of hot water from the first water discharge unit 4a are provided.

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

Further, the solenoid valve 28a for water and the solenoid valve 28b for hot water 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 a signal to the water solenoid valve 28a and the hot water solenoid valve 28b while the object to be detected such as a finger is close to the first water discharge portion 4a, opens the valve, and causes the valve to be opened from the water discharge portion 4a. Discharge hot water. In addition, information regarding the presence or absence of the approach of the user detected by the human body detection sensor 19 is also sent to the controller 40, and this information is used for controlling the water discharge from the second water discharge unit 4b. 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 a solenoid valve. It is connected to the water solenoid valve 30. As will be 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 to a pressure suitable for being atomized and sprayed from the second water discharge portion 4b by the pressure regulating valve 32.

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 becomes equal to or higher than a predetermined pressure. For example, when the spout of the second spouting portion 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 a functional water. The controller 40 controls energization and stopping 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 this 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 reclaimed water contains chlorine ions, so free chlorine is generated by electrolysis. Free chlorine exists as hypochlorous acid (HClO) in acidity, and in this form, it has about 10 times stronger bactericidal activity than hypochlorite ion ( ^ClO- ), which is an alkaline existence form. 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 chloride ions, but when used in areas where the concentration of chloride ions is low or when strong bactericidal action is required. Chloride 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 electrodes, iridium-platinum-tantal-based electrodes, etc. A conductive substrate on which a catalyst for chlorine generation is supported is advantageous in terms of manufacturing cost because the substrate portion that bears 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 the enzyme in the cell membrane of the bacterium and inhibit the action of the enzyme, so that the bacterium cannot sustain its life. It also has the effect of coating the surface of the substrate that comes into contact with it, making it difficult for bacteria to grow on the surface of the substrate. Since silver ions can coat the surface of the substrate to prevent the adhesion of bacteria and have bactericidal activity, the growth of bacteria on the surface of the substrate 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, which generates high-concentration ozone along with the generation of oxygen on the anode side, can be suitably 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 as 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 instead of electrolyzed water, the above-mentioned sterilized water other than electrolyzed water may be used. Needless to say.

Next, the operation of the washbasin 1 according to the embodiment of the present invention will be described with reference to FIGS. 5 to 10.
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 human body detection sensor 19, the presence / absence of detection by the proximity sensor 18, the water solenoid valve 28a and the hot water solenoid valve 28b. Opening and closing, opening and closing of the solenoid valve 30 for functional water are 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 a flowchart that is activated when the human body detection sensor 19 changes from a non-detection state in which the approach of the human body to the washbasin 1 is not detected to a detection state in which the approach of the human body is detected. be.

First, at time t1 in FIG. 6, when the user approaches the wash basin 1, the human body detection sensor 19 detects this. When the human body detection sensor 19 detects the approach of the user, step S1 in the flowchart of FIG. 5 is executed. Next, at time t2 in FIG. 6, when the user approaching the wash basin 1 extends his / her finger toward the first water discharge portion 4a, the approach sensor 18 detects this. When the proximity sensor 18 detects the 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 rotation position in the left-right direction of the operation lever 10a. Further, the flow rate of the hot water flowing out from the flow control / temperature control valve 10 is set by the rotational position in the front-rear direction of the operation lever 10a. The hot water flowing out from the flow control / temperature control valve 10 is discharged from the first water discharge unit 4a. Further, at time t3 in FIG. 6, when the user's finger moves away from the first water discharge portion 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 28a. A control signal is sent to 28b to close them.

Further, the time after the human body detection sensor 19 detects the approach of the user at the time t1 in FIG. 6 is counted by the controller 40. Next, at time t4 in FIG. 6, when the user leaves the washbasin and the human body detection sensor 19 enters a non-detection state in which the approach of the user is not detected, the processing in the flowchart shown in FIG. 5 is from step S2 to step S3. move on.

Next, in step S3 of FIG. 5, it is determined whether or not the electrolyzed water is being discharged (sprayed). That is, if the user manually sprays electrolyzed water while using the wash basin and leaves the wash basin in the middle of this spraying, even after the human body detection sensor 19 is in the non-detection state. Electrolyzed water may be sprayed. If the electrolyzed water is being discharged, the process proceeds to step S4, and if the electrolyzed water is not being discharged, the process proceeds to step S5. In step S4, the count of the time during which the human body detection sensor 19 has detected the approach of the user (time between times t1 and t4 in FIG. 6) is reset, and one process of the flowchart shown in FIG. 5 is completed. do. In the present embodiment, the controller 40 determines whether or not the electrolyzed water is discharged depending on whether or not the controller 40 outputs a control signal for opening the solenoid valve 30 for functional water. There is. The manual discharge of electrolyzed water will be described later.

Next, in step S5 of FIG. 5, the time during which the human body detection sensor 19 continuously detects the approach of the user (time between times t1 and t4 in FIG. 6) counted by the controller 40 is predetermined. It is determined whether or not the continuous approach time τ1 or more of. If the counted time is less than the continuous approach time τ1, the process proceeds to step S6, and in step S6, the counted detection time is reset, and one process of the flowchart shown in FIG. 5 is completed. In this embodiment, the predetermined continuous approach time τ1 is 10 seconds. On the other hand, if the counted time is the continuous approach time τ1 or more, the process proceeds to step S7, and in step S7, it is determined whether or not water is discharged during the detection time (time t1 to t4 in FIG. 6). To. If the approach sensor 18 does not detect the approach of the object to be detected during the detection time, that is, water is not discharged, the process proceeds to step S8, and in step S8, the counted detection time is reset. One process of the flowchart shown in FIG. 5 is completed. If water is discharged during the detection time, the process of step S9 or lower is executed, and the electrolyzed water is sprayed.

That is, even when the human body detection sensor 19 detects the approach of the user, if the user has been approaching the wash basin 1 for a short time, the user simply passes in front of the wash basin 1. Since there is a high possibility, the spraying of the electrolyzed water is not performed, and one process of the flowchart shown in FIG. 5 is completed (step S6). Further, even when the human body detection sensor 19 detects the approach of the user for a predetermined continuous approach time τ1 or more, if water is not discharged during that time, for example, the user is in front of the washbasin 1. There is a high possibility that the bowl portion 2 was used without getting dirty, such as when a dryer was used. Therefore, even in such a case, the spraying of the electrolyzed water is not executed, and one process of the flowchart shown in FIG. 5 is completed (step S8).

In the example shown in FIG. 6, the time during which the approach of the user was detected (time t1 to t4 in FIG. 6) is the continuous approach time τ1 or more, and water is discharged from the first water discharge unit 4a during that time (in FIG. 6). Since the times t2 to t3) have been performed, steps S9 and the following in the flowchart shown in FIG. 5 are executed. That is, the water discharge from the second water discharge unit 4b is executed after the human body detection sensor 19 changes from the state of detecting the approach of the user to the state of not detecting the approach of the user. In step S9, it is determined whether or not the human body detection sensor 19 detects the approach of the user. If the human body detection sensor 19 has not detected it, the process proceeds to step S10. On the other hand, when the human body detection sensor 19 detects the approach of the user again after the time t4 in FIG. 6, the processes of steps S9 → S11 → S9 are repeatedly executed during the detection. The "waiting time reset" in step S11 will be described later.

If the human body detection sensor 19 does not detect the approach of the user after the time t4 in FIG. 6, the process in the flowchart of FIG. 5 shifts from step S9 to step S10. In step S10, it is determined whether or not the predetermined waiting time T1 at which the integration is started has elapsed from the time when the human body detection sensor 19 no longer detects the user (time t4 in FIG. 6). If the waiting time T1 has elapsed, the process proceeds to step S12, and if not, the process returns to step S9. Therefore, if the human body detection sensor 19 does not detect the user after the user is no longer detected at time t4, the processes of steps S10 → S9 → S10 are repeatedly executed until the waiting time T1 elapses. To. In this embodiment, the standby time T1 is 60 seconds.

When the waiting time T1 elapses at the time t5 of FIG. 6, the process in the flowchart of FIG. 5 shifts from step S10 to step S12. In the process of step S12 or lower, spraying of electrolyzed water from the second water discharge unit 4b is executed. As described above, the latest water discharge has ended at time t3, but while the human body detection sensor 19 is detecting the user, the spraying of electrolyzed water from the second water discharge unit 4b is prohibited, and the spraying of electrolyzed water is prohibited at time t4. After the user is no longer detected in the water, the electrolyzed water is sprayed after the waiting time T1 elapses.

When the stop of water discharge at time t3 and the non-detection of the user by the human body detection sensor 19 (time t4) are almost simultaneous, if the electrolyzed water is sprayed immediately after the non-detection of the user, the water discharge is performed. Electrolyzed water may be sprayed while the tap water that has been used remains in the bowl portion 2. Therefore, after the user is not detected, the electrolyzed water is sprayed after waiting for the elapse of the waiting time T1. That is, if the electrolyzed water is sprayed while the discharged tap water remains in the bowl portion 2, the electrolyzed water is diluted, so that the sterilizing effect of the electrolyzed water is reduced.

In step S12, the controller 40 sends a signal to the solenoid valve 30 for functional water to open the valve. Next, in step S13, 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 discharge 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 S14 of FIG. 5, it is determined whether or not the predetermined functional water discharge time T2 has elapsed after the functional water solenoid valve 30 is opened (after the time t5 of FIG. 6). If the functional water discharge time T2 has elapsed, the process proceeds to step S16, and if not, the process proceeds to step S15. In step S15, it is determined whether or not the human body detection sensor 19 has detected the user (whether or not the user is in the non-detection state), and if the user is in the non-detection state, step S14 is performed. If the user is in the detection state, the process proceeds to step S19. Therefore, if the human body detection sensor 19 does not detect the user after the functional water solenoid valve 30 is opened at time t5, steps S14 → S15 → S14 until the functional water discharge time T2 elapses. Process is executed repeatedly. In this embodiment, the functional water discharge time T2 is 10 seconds.

Further, when the functional water discharge time T2 elapses at the time t6 of FIG. 6, the process in the flowchart of FIG. 5 shifts from step S14 to step S16. In step S16, the controller 40 sends a signal to the functional water solenoid valve 30 to close it. Next, in step S17, the controller 40 stops energizing the electrolytic cell 38. Further, in step S18, the controller 40 resets the time during which the user was detected by the human body detection sensor 19 accumulated by the controller 40 (time t1 to t4 in FIG. 6) to zero, and is shown in FIG. Finish one process of the flowchart. When the human body detection sensor 19 detects the approach of the user 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.

In the example shown in FIG. 6, at time t7, the human body detection sensor 19 detects the approach of the user again, and the processing of the flowchart of FIG. 5 is started. Further, since the human body detection sensor 19 is in the non-detection state at time t8, the process in the flowchart of FIG. 5 proceeds from steps S2 to S3. Here, since the period during which the human body detection sensor 19 has detected the human body (time t7 to t8 in FIG. 6) is the continuous approach time τ1 or more, the process in the flowchart of FIG. 5 proceeds from steps S5 to S7. However, since the water is not discharged from the first water discharge unit 4a within the detection period of the human body by the human body detection sensor 19 (time t7 to t8 in FIG. 6), the process proceeds from steps S7 to S8, and the electrolyzed water is electrolyzed. One process of the flowchart shown in FIG. 5 is completed without spouting water. In this way, even if it is detected that the user is in the vicinity of the wash basin 1 for a predetermined continuous approach time τ1 or more, if water is not discharged, dirt may adhere to the bowl portion 2. Is so low that no electrolyzed water is discharged.

Next, another example of control by the controller 40 will be described with reference to FIGS. 5 and 7.
First, when the human body detection sensor 19 detects the user at the time t10 of FIG. 7, the processing of the flowchart shown in FIG. 5 is started, and water is discharged from the first water discharge unit 4a between the times t11 and t12. Next, when the human body detection sensor 19 is in the non-detection state at the time t13 of FIG. 7, the process in the flowchart shown in FIG. 5 shifts from steps S2 to S3. Further, since the period during which the human body detection sensor 19 has detected the user (time t10 to t13) is longer than the predetermined continuous approach time τ1, the process in FIG. 5 proceeds to step S7. Further, since the water was discharged during the period during which the user was detected (time t11 to t12), the process in FIG. 5 proceeds from steps S7 to S9, and the integration of the waiting time is started from time t13. The waiting time from which the integration is started from the time t13 is integrated while the processes of steps S9 → S10 → S9 are repeated.

Next, at time t14 in FIG. 7, when the human body detection sensor 19 detects the approach of the user before the predetermined waiting time T1 elapses (before the accumulated waiting time reaches T1), FIG. In the flowchart shown in 5, the process in which steps S9 → S10 → S9 are repeated now repeats steps S9 → S11 → S9. Here, in step S11, the accumulated waiting time is reset, so that the waiting time is not accumulated (standby) while the steps S9 → S11 → S9 are repeated (during the user's detection state). The integrated value of time does not increase).

Next, when the human body detection sensor 19 stops detecting the user at the time t15 of FIG. 7, in the flowchart shown in FIG. 5, the process of repeating steps S9 → S11 → S9 is performed in steps S9 → S10 → S9. It will be repeated, and the integration of the waiting time from the time t15 will start. Further, when the predetermined waiting time T1 elapses at the time t16 of FIG. 7 without the human body detection sensor 19 detecting the user during the integration of the waiting time, the process in the flowchart shown in FIG. 5 shifts from step S10 to S12. do. In the process of step S12 or less, the electrolyzed water is sprayed from the second water discharge unit 4b over the predetermined functional water discharge time T2 (time t16 to t17 in FIG. 7), and one process of the flowchart shown in FIG. 5 is performed. finish.

In this way, after the human body detection sensor 19 is in the non-detection state (after the time t13 in FIG. 7), the user detects it again while waiting for the elapse of the predetermined standby time T1 (time t13 to). (Time t14 ~), the integrated value of the waiting time is reset, and after the non-detection state is reached (after the time t15), the integration of the waiting time is started from zero again (time t15 ~). Here, the detection state (time t14 to t15) during standby is a short time less than the predetermined continuous approach time τ1, but the detection state at times t10 to t13 exceeds the continuous approach time τ1. Regardless of the period of the detection state during this period (time t14 to t15), the electrolyzed water is sprayed after the lapse of the predetermined standby time T1 (after the time t16) (time t16 to t17).

Next, another example of control by the controller 40 will be described with reference to FIGS. 5 and 8.
First, when the human body detection sensor 19 detects the user at the time t18 in FIG. 8, the processing of the flowchart shown in FIG. 5 is started, and water is discharged from the first water discharge unit 4a between the times t19 and t20. .. Next, when the human body detection sensor 19 is in the non-detection state at the time t21 of FIG. 8, the process in the flowchart shown in FIG. 5 shifts from steps S2 to S3. Further, since the period during which the human body detection sensor 19 has detected the user (time t18 to t21) is longer than the predetermined continuous approach time τ1, the process in FIG. 5 proceeds to step S7. Further, since the water was discharged during the period during which the user was detected (time t19 to t20), the process in FIG. 5 proceeds from steps S7 to S9, and the integration of the waiting time is started from time t21. The waiting time from which the integration is started from the time t21 is integrated while the processes of steps S9 → S10 → S9 are repeated.

When the standby time T1 elapses at the time t22, the process in the flowchart of FIG. 5 shifts from step S10 to S12, and the spraying of the 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 S14 → S15 → S14 are repeated in the flowchart. The spraying of 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 human body detection sensor is used before the functional water discharge time T2 elapses from the start of spraying at time t22. The user is detected by 19 (time t23 in FIG. 8). When the user is detected by the human body detection sensor 19, the process in the flowchart shifts from step S15 to S19.

In step S19, the controller 40 sends a signal to the solenoid valve 30 for functional water, closes the signal, and stops the energization of the electrolytic cell 38. As a result, the spraying of the electrolyzed water from the second water discharge portion 4b is stopped. As described above, when the user is detected by the human body detection sensor 19 before the functional water discharge time T2 elapses during the spraying of the electrolyzed water, the controller 40 sprays the electrolyzed water from the second water discharge unit 4b. To stop. That is, in a state where the user is detected by the human body detection sensor 19, water may be discharged from the first water discharge unit 4a, and in that case, even if the electrolyzed water is sprayed, the water is washed away. Electrolyzed water is wasted.

After step S19, in the flowchart of FIG. 5, the processes of steps S9 → S11 → S9 are repeated until the human body detection sensor 19 is in the non-detection state. Next, when the human body detection sensor 19 is in the non-detection state at the time t24 in FIG. 8, the process in the flowchart shifts to step S10, and thereafter, the process of steps S10 → S9 → S10 is repeated until the predetermined standby time T1 elapses. Is done.

Next, when the waiting time T1 elapses at the time t25 in FIG. 8, the process in the flowchart proceeds to step S12, 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 t26, the spraying of the electrolyzed water is stopped, the detection time of the human body detection sensor 19 is reset, and one process of the flowchart shown in FIG. 5 is completed.

Next, manual discharge of electrolyzed water will be described with reference to FIGS. 5, 9 and 10.
FIG. 9 is a flowchart showing a manual discharge process of electrolyzed water. FIG. 10 is a time chart showing an example of the case where the electrolyzed water is manually discharged. As described above, in the wash basin 1 of the embodiment of the present invention, by operating the operation switch 12 provided in the faucet device unit 4, electrolyzed water which is functional water is manually discharged from the second water discharge unit 4b. Can be discharged. The flowchart shown in FIG. 9 shows a process executed when the electrolyzed water discharge operation is performed by the operation switch 12.

First, when the operation switch 12 is operated in step S21 of FIG. 9, in step S22, the controller 40 sends a signal to the solenoid valve 30 for functional water to open the valve. Next, in step S13, 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, tap water supplied from the water supply pipe 20a flows into the electrolytic cell 38 through the solenoid valve 30 for functional water. The tap water flowing into the electrolytic cell 38 is electrolyzed, and the generated electrolyzed water is made into a mist and sprayed from the second water discharge portion 4b to the bowl portion 2.

Next, in step S24, it is determined whether or not the predetermined functional water discharge time T2 has elapsed after the functional water solenoid valve 30 is opened. If the functional water discharge time T2 has elapsed, the process proceeds to step S26, and if not, the process proceeds to step S25. Further, in step S25, it is determined whether or not the operation switch 12 is newly operated. If the operation switch 12 is newly operated, the process proceeds to step S26, and if the operation switch 12 has not elapsed, the process returns to step S24. Therefore, after the functional water solenoid valve 30 is opened, if there is no new operation of the operation switch 12, the process of steps S24 → S25 → S24 is repeated.

If the functional water discharge time T2 elapses after the functional water solenoid valve 30 is opened, or if the operation switch 12 is newly operated before the functional water discharge time T2 elapses, the processing is performed. Goes to step S26. In step S26, the controller 40 closes the solenoid valve 30 for functional water, stops the energization of the electrolytic cell 38, and ends one process of the flowchart shown in FIG. In the present embodiment, the functional water discharge time T2, which is the time for continuing the discharge of the electrolyzed water when the operation switch 12 is operated, is the same as the discharge time when the controller 40 automatically discharges the electrolyzed water. It is 10 seconds.

In the example of the time chart shown in FIG. 10, the human body detection sensor 19 detects the approach of the user at time t31. Next, when the proximity sensor 18 detects the user's finger at time t32, the water solenoid valve 28a and the hot water solenoid valve 28b are opened, and water discharge from the first water discharge unit 4a is started. Further, after the water discharge from the first water discharge unit 4a is stopped at the time t33, the user operates the operation switch 12 at the time t34 to discharge the electrolyzed water from the second water discharge unit 4b. For example, the user can sterilize the toothbrush by spraying electrolyzed water on it.

Since the operation switch 12 is not operated after the operation switch 12 is operated at the time t34, the functional water electromagnetic valve 30 is closed at the time t35 after the lapse of the predetermined functional water discharge time T2 (10 seconds). The spraying of electrolyzed water is stopped (steps S24 → S26 in FIG. 9). Next, the user operates the operation switch 12 again at the time t36 to start spraying the electrolyzed water, but this time, the operation switch 12 is operated at the time t37 before the lapse of the functional water discharge time T2. As a result, the spraying of electrolyzed water is stopped (steps S25 → S26 in FIG. 9).

Further, the user operates the operation switch 12 at time t38 to start spraying the electrolyzed water, but since he / she left the washstand 1 at time t39 before the lapse of the functional water discharge time T2, the human body is detected at time t39. The sensor 19 is in the non-detection state. Even in such a case, the controller 40 continues spraying the electrolyzed water and stops spraying the electrolyzed water at the time t40 when the functional water discharge time T2 has elapsed (steps S24 → S26 in FIG. 9).

On the other hand, when the human body detection sensor 19 shifts from the detection state to the non-detection state, step S3 and subsequent steps in the flowchart shown in FIG. 5 described above are executed. However, since it is determined in step S3 of FIG. 5 that the electrolyzed water (functional water) is being discharged, the detection time is reset in step S4, and the process of the flowchart shown in FIG. 5 is the discharge of new electrolyzed water. Exit without doing. That is, if the electrolyzed water is manually discharged at the time when the human body detection sensor 19 is in the non-detection state (time t39 in FIG. 10), the controller 40 does not automatically discharge the electrolyzed water. ..

In this way, if the user manually starts the discharge of electrolyzed water and then leaves the washstand 1 while the discharge continues, the bowl portion 2 and drainage are not sterilized by a toothbrush or the like. It is highly possible that the electrolyzed water was discharged for the purpose of sterilizing the mouth 2a. Therefore, even if the detection time by the human body detection sensor 19 (time t31 to t39 in FIG. 10) exceeds the predetermined continuous approach time τ1 (= 10 seconds), automatic electrolysis by the controller 40 is performed after the time t39. By not executing the discharge of water, the overlapping sterilization of the bowl portion 2 and the drain port 2a is avoided.

In the present embodiment, the controller 40 determines whether or not the electrolyzed water is discharged depending on whether or not the controller 40 outputs a control signal for opening the functional water electromagnetic valve 30. However, a sensor for detecting the discharge of electrolyzed water may be provided separately, and the presence or absence of discharge of electrolyzed water may be determined based on the detection signal of this sensor.

According to the wash basin 1 of the embodiment of the present invention, when the user's approach to the wash basin 1 is detected, the discharge of electrolyzed water from the second water discharge unit 4b is prohibited. It is possible to prevent the electrolyzed water from being discharged in a situation where there is a high possibility that the person will restart the water discharge from the first water discharge unit 4a, and it is possible to avoid wasting the electrolyzed water. That is, if the water is discharged from the first water discharge portion again immediately after the electrolyzed water is discharged, there is a high possibility that various germs will adhere to the bowl portion again, and the electrolyzed water will be discharged again after the discharge is completed. It is necessary, and the electrolyzed water discharged first is wasted. According to the wash basin of the present embodiment, it is possible to avoid such waste of electrolyzed water, and it is possible to effectively suppress the growth of germs in the bowl portion 2 and the drain port 2a while saving water. .. Further, by suppressing the waste of the electrolyzed water, 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 wash basin 1 of the present embodiment, the state in which the human body detection sensor 19 detects the approach of the user (time t1 to t4 in FIG. 6) is changed to the state in which the approach of the user is not detected. After the change (time t4 to FIG. 6), the electrolyzed water is discharged from the second water discharge unit 4b (time t5 to t6 in FIG. 6), so that the user immediately starts using the washstand 1 again. The electrolyzed water can be reliably discharged in a situation where the possibility is low, and the growth of various germs can be effectively suppressed without wasting the electrolyzed water.

Further, according to the wash basin 1 of the present embodiment, when the time during which the human body detection sensor 19 continuously detects the approach of the user is less than the predetermined continuous approach time τ1, the second water discharge unit is used. Since water discharge from 4b is not executed (steps S5 → S6 in FIG. 5), it is unnecessary in a situation where germs do not adhere to the bowl portion 2, for example, when the user passes in front of the wash basin 1. It is possible to prevent the electrolyzed water from being discharged.

Further, according to the wash basin 1 of the present embodiment, when the water discharge unit 4a does not discharge water while the human body detection sensor 19 detects the approach of the user (time t7 in FIG. 6). Since the electrolyzed water is not discharged in ~ t8), the electrolyzed water does not adhere to the bowl portion 2, for example, when the user is using the dryer in front of the wash basin 1. Can be prevented from being spouted.

Further, according to the wash basin 1 of the present embodiment, after the human body detection sensor 19 is in the non-detection state (time t13 to FIG. 7), the second water discharge unit 4b waits for the elapse of the predetermined standby time T1. Since the water discharge from the water is started (time t16 to FIG. 6), a short time such as when the user leaves the front of the washbasin 1 in the middle of using the washbasin 1 (time t13 to t14 in FIG. 6). It is possible to prevent the electrolyzed water from being discharged in a situation where the use of the wash basin 1 is likely to be resumed.

Further, according to the wash basin 1 of the present embodiment, the human body detection sensor 19 has changed to a state of detecting the approach of the user while waiting for the elapse of the predetermined waiting time T1 (time in FIG. 7). In the case of t14), the integration of the waiting time is reset (steps S9 → S11 in FIG. 5), and then when the human body detection sensor 19 changes to a state in which the approach of the user is not detected (time t15 in FIG. 7). ), The integration of the waiting time is newly started. Therefore, even if the user temporarily leaves the wash basin 1 many times, it is possible to prevent unnecessary discharge of functional water, and while saving water, the bowl portion 2 and the drain port 2a can be prevented. It is possible to effectively suppress the propagation of various germs in the water.

Further, according to the wash basin 1 of the present embodiment, the human body detection sensor 19 changes to a state of detecting the approach of the user while the functional water is automatically discharged from the second water discharge unit 4b. In the case of (time t23 in FIG. 8), the solenoid valve 30 for functional water is closed, so that it is necessary to avoid discharging the functional water when the user starts using the wash basin 1. Can be done. As a result, the user can use the washbasin 1 without any discomfort.

Further, according to the wash basin 1 of the present embodiment, the human body detection sensor 19 changes to a state of detecting the approach of the user during the discharge of the functional water (time t23 in FIG. 8), and the functional water is discharged. After the interruption, when the human body detection sensor 19 changes to the state where the approach of the user is not detected again (time t24 in FIG. 8), the automatic discharge of the functional water is started from the beginning (FIG. 8). 8 time t25). Therefore, even if the wash basin 1 is used after the discharge of the functional water is interrupted, the discharge of the functional water is started from the beginning, so that a predetermined amount of the functional water is surely discharged after the use of the wash basin 1 ( The time t25 to t26) in FIG. 8 can be obtained, and the growth of various germs in the bowl portion 2 and the drain port 2a can be suppressed.

Further, according to the wash basin 1 of the present embodiment, the human body detection sensor 19 does not detect the approach of the user during the manual discharge of the functional water by the user (time t38 to t40 in FIG. 10). When the change (time t39 in FIG. 10), the automatic discharge of the functional water is not executed (steps S3 → S4 in FIG. 5), so that the automatic discharge of the functional water is manually sterilized by the user. It is possible to avoid duplication with, and it is possible to prevent unnecessary discharge of functional 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, after the human body detection sensor 19 is in the non-detection state, water discharge from the second water discharge unit 4b is started after waiting for a predetermined standby time T1 to elapse. The present invention can also be configured such that after the sensor 19 is in the non-detection state, water discharge from the second water discharge unit 4b is started without a waiting time. In this case, steps S9 to S11 in the flowchart of FIG. 5 may be omitted, and the present invention may be configured so that step S12 and subsequent steps are executed after the determination is “Yes” in step S7.

Further, in the above-described embodiment, the present invention has been applied to a washbasin provided with an automatic faucet that discharges water when an object to be detected is detected by the proximity sensor 18, but as a modification, a manual faucet is applied. The present invention can also be applied to a washbasin equipped with a device.

FIG. 11 is a diagram showing an operation unit of the faucet device in the washbasin of this modified example.
In this modification, the on-off valve (not shown) is opened and closed by the user manually operating the operation unit shown in FIG. 11, and water discharge and water stop can be switched. As shown in FIG. 11, the operation unit 50 in this modification has a base unit 52 and an operation lever 54 rotatably attached to the base unit 52. When the operating lever 54 is in the closed position shown by the solid line, the faucet device is stopped, and when the operating lever 54 is rotated to the open position shown by the imaginary line, water discharge is started. There is.

Further, a magnet 54a is embedded in the operation lever 54. On the other hand, the Hall element 52a, which is a magnetic sensor, is embedded in the base portion 52 at a position facing the magnet 54a. As a result, the Hall element 52a detects the magnetism of the magnet 54a when the operating lever 54 is in the closed position. On the other hand, when the operation lever 54 is rotated to the open position, the magnet 54a does not face the Hall element 52a, and the Hall element 52a does not detect the magnetism of the magnet 54a. Therefore, the Hall element 52a functions as a water discharge sensor, and the controller 40 detects whether or not water discharge has been performed based on the presence or absence of magnetic detection by the Hall element 52a. Further, based on this information, the controller 40 determines in step S7 of FIG. 5 whether or not water is discharged while the human body detection sensor 19 is in the detection state. According to this modification, the present invention can also be applied to a washbasin having a manual faucet device.

1 Washbasin according to the embodiment of the present invention 2 Bowl part 2a Drainage 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 (manual discharge switch)
14 Touch switch 16 LED for lighting
18 Approach sensor (water discharge sensor)
19 Human body detection 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 28b Solenoid valve for hot water 30 Solenoid valve for functional water (solenoid valve)
32 Pressure control valve 34 Safety valve 36 Check valve 38 Electrolytic cell 40 Controller (control unit)
42 AC power supply 50 Operation unit 52 Base unit 52a Hall element 54 Operation lever 54a Magnet

Claims (8)

A washbasin 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,
A second water discharge part for discharging functional water having a sterilizing action to the bowl part, and
A solenoid valve for switching between water discharge and water stop from this second water discharge part,
A human body detection sensor that detects the user's approach to the washbasin in a range wider than the range that detects the user's fingers to switch the water discharge stop, and
It has a control unit that opens the solenoid valve based on the detection signal of the human body detection sensor and automatically discharges functional water from the second water discharge unit.
When the approach of the user is detected by the human body detection sensor, the control unit prohibits automatic water discharge from the second water discharge unit .
The control unit opens the solenoid valve after changing from the state in which the human body detection sensor detects the approach of the user to the state in which the approach of the user is not detected, and the second water discharge. A washbasin characterized by automatically discharging water from the part . The control unit is configured to measure the time during which the human body detection sensor continuously detects the approach of the user, and when this time is less than the predetermined continuous approach time, the second The washbasin according to claim 1, which does not automatically discharge water from the water discharge unit. Further, it has a water discharge sensor that detects water discharge from the first water discharge unit, and the control unit has a water discharge sensor from the first water discharge unit while the human body detection sensor detects the approach of the user. When water discharge is not detected, even after the state in which the human body detection sensor detects the approach of the user is changed to the state in which the approach of the user is not detected, the second water discharge unit is used. The washbasin according to claim 1 or 2, which does not perform automatic water discharge. The control unit changes from a state in which the human body detection sensor detects the approach of the user to a state in which the approach of the user is not detected, and then waits for a predetermined waiting time to elapse. The wash basin according to any one of claims 1 to 3 for starting water discharge from the water discharge unit. When the control unit changes from a state in which the human body detection sensor does not detect the approach of the user to a state in which the approach of the user is detected while waiting for the elapse of the predetermined waiting time. In, when the integration of the waiting time is reset and then the state where the human body detection sensor detects the approach of the user changes to the state where the approach of the user is not detected, the waiting time is newly set. The washbasin according to claim 4, wherein the time accumulation is started. The control unit opens the solenoid valve, and while the functional water is automatically discharged from the second water discharge unit, the human body detection sensor does not detect the approach of the user. The wash basin according to any one of claims 1 to 5, which closes the solenoid valve when the state changes to detect the approach of the user. The control unit changes to a state in which the human body detection sensor detects the approach of the user during the discharge of the functional water from the second water discharge unit, interrupts the discharge of the functional water, and then again the human body. The wash basin according to claim 6, wherein when the detection sensor changes to a state in which the approach of the user is not detected, the automatic discharge of the functional water is started from the beginning. Further, it has a manual discharge switch for discharging functional water from the second water discharge unit for a predetermined time based on the operation of the user, and the human body detection sensor is provided while the functional water is discharged by the operation of the manual discharge switch. Claims that the control unit does not automatically discharge from the second water discharge unit when the state changes from the state of detecting the approach of the user to the state of not detecting the approach of the user. The washstand according to any one of 1 to 7.

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