JP6497504B2 - Automatic faucet device - Google Patents

Description

  The present invention relates to an automatic faucet device, and more particularly, to an automatic faucet device that performs water discharge by switching different water discharge modes.

  Conventionally, various attempts have been made to realize water saving in a faucet device. For example, Patent Document 1 discloses a technique for saving water by attaching a predetermined device to a faucet and spraying water from the water at a low flow rate in a mist. Further, for example, in Patent Document 2, by changing the water discharge flow rate according to the detection time of the sensor, specifically, when the detection time is short, the water discharge flow rate is decreased, and when the detection time is long, water discharge A technique for saving water by increasing the flow rate is disclosed.

Noto 3007505 gazette JP 2001-40724 A

  However, in the technique described in Patent Document 1, since only spray water discharge is continuously performed, when a user performs hand washing using soap, or when performing operations other than hand washing such as face washing or water storage, Convenience will be low. On the other hand, in the technique described in Patent Document 2, the water discharge flow rate is changed, but since the same water discharge form is continuously applied, the convenience for the user is lowered. Specifically, in the technique described in Patent Document 2, the same water discharge form is applied in a period in which the water discharge flow rate is low and a period in which the water discharge flow rate is high. Will fall.

  Accordingly, an object of the present invention is to provide an automatic faucet device that can appropriately save water while ensuring convenience for the user.

In order to achieve the above object, the present invention is an automatic water faucet device that automatically discharges water when a detected object is detected, and includes a sensor that detects the detected object and a first water discharge mode. The discharge angle of water from the water outlet is larger than the first water discharge form by the first water discharge part and the first water discharge part, and the flow rate of water discharged from the first water discharge form by the first water discharge part Control for switching between the second water discharge unit that discharges water in the second water discharge mode, the water discharge from the first water discharge unit, and the water discharge from the second water discharge unit. The control unit first causes the second water discharger to discharge water while the sensor is detecting the object to be detected, and starts discharging water from the second water discharger. When the first predetermined time has elapsed the water discharge from the second jetting unit is stopped, the serial from the second water discharge portion Water Stop When the second predetermined time has elapsed to start spouting from first jetting portion, characterized in that.
In the present invention configured as described above, since water is discharged from the second water discharger first, hand washing is performed using water discharged from the second water discharger with a small flow rate but a high flow rate and a wide water discharge range. When the first predetermined time has elapsed since the start of water discharge from the second water discharge portion, the water discharge from the second water discharge portion is stopped and the water discharge from the first water discharge portion is stopped. Since water is discharged, not only hand washing but also face washing and water storage can be efficiently performed using water discharged from the first water discharging section having a large flow rate. Therefore, according to the present invention, it is possible to appropriately save water while ensuring user convenience. Further, according to the present invention, since the water is automatically switched to the water discharge from the first water discharge unit after the water discharge from the second water discharge unit, when performing operations other than hand washing (face washing, water storage, etc.) Even when the user performs a relatively long time operation such as hand washing, etc., the user automatically switches to discharging water from the first discharging unit without performing special operations or being conscious, High convenience is ensured.
Moreover, since the water discharge from the 1st water discharge part is started after 2nd predetermined time progress, after stopping the water discharge from a 2nd water discharge part, that is, from the water discharge from a 2nd water discharge part, and a 1st water discharge part Therefore, the user can be notified of the end of water discharge from the second water discharge unit. As a result, the user can be given a kick to stop hand washing and the like, and water can be effectively saved.

In this invention, Preferably, it further has the adjustment part which can adjust 1st predetermined time.
In the present invention configured as described above, since the first predetermined time for discharging water from the second water discharging unit using the adjustment unit can be changed, according to the use environment of the automatic water faucet device, The first predetermined time during which water is discharged from the second water discharger can be appropriately adjusted depending on whether the user's convenience and water saving are prioritized. For example, in a usage environment where dirt that is difficult to remove adheres to the hand and a relatively long hand wash is required, the first predetermined time for discharging water from the second water discharge unit is shortened and used rather than water saving. Priority can be given to the convenience of the user.

In the present invention, preferably, the control unit stops detecting the object to be detected during the water discharge of the first water discharge unit, and the third predetermined time elapses after the water discharge from the first water discharge unit is stopped. When the sensor detects an object to be detected, water is discharged from the first water discharger.
In the present invention configured as described above, the sensor does not detect the detected object, and after the water discharge from the first water discharging unit is stopped, the sensor is detected until the third predetermined time elapses. When water is detected, the water discharge from the second water discharger is not performed again, but the foam water discharge from the first water discharger is performed. Therefore, the convenience of the user can be appropriately ensured. For example, if the user temporarily moves his / her hand outside the detection range of the sensor during hand washing and then tries to draw water with his hand or wash his hand with soap, Since the water discharged from the first water discharger having a large flow rate is performed instead of the water discharged from the water discharger, the convenience of the user can be ensured.

In the present invention, preferably, the control unit causes the sensor to stop detecting the object to be detected during the water discharge of the second water discharge unit, and the third predetermined time elapses after the water discharge from the second water discharge unit is stopped. When the sensor detects an object to be detected, water is discharged from the first water discharger or the second water discharger.
In the present invention configured as described above, the sensor does not detect the object to be detected, and after the water discharge from the second water discharge unit is stopped, the sensor is detected until the third predetermined time elapses. Is detected, the water discharge is restarted from either the first water discharge unit or the second water discharge unit. According to such this invention, when water discharge from the 2nd water discharge part is restarted, water saving can be ensured, and when water discharge from the 1st water discharge part is restarted, it is used. User convenience can be ensured.

  According to the automatic faucet device of the present invention, it is possible to appropriately save water while ensuring the convenience for the user.

It is the perspective view which looked at the hand-washing machine which applied the automatic faucet device by embodiment of this invention from diagonally upward. It is a figure for demonstrating the structure of the automatic faucet device by embodiment of this invention concretely, FIG. 2 (A) is the perspective view which looked at this automatic faucet device from diagonally downward, FIG. B) is a cross-sectional view of the automatic faucet device as seen along line IIB-IIB in FIG. It is a longitudinal cross-sectional view of this 2nd water discharging part for demonstrating the principle of the spray water discharging of the 2nd water discharging part by embodiment of this invention. It is sectional drawing of the automatic water faucet apparatus by embodiment of this invention for demonstrating the relationship between the water discharge range of the 2nd water discharge part by embodiment of this invention, and the irradiation range of LED. It is sectional drawing of the automatic water faucet apparatus by embodiment of this invention for demonstrating the arrangement | positioning relationship between the 1st water discharging part by the embodiment of this invention, the 2nd water discharging part, and a sensor. It is a block diagram showing roughly the functional composition of the automatic faucet device by the embodiment of the present invention. It is a time chart which shows the basic control by embodiment of this invention. It is a schematic diagram which shows the state of the water in the 2nd flow path in the period which performs the after-water discharge by embodiment of this invention from left to right in time series. It is a time chart which shows the 1st control example by embodiment of this invention. It is a time chart which shows the 2nd control example by embodiment of this invention. It is a time chart which shows the 3rd control example by embodiment of this invention. It is a flowchart which shows the control flow which concerns on the water discharge for hand-washing by embodiment of this invention. It is a flowchart which shows the control flow which concerns on the after-water discharge by embodiment of this invention performed after the flowchart shown in FIG. It is a block diagram showing roughly the functional composition of the automatic faucet device by the modification in the embodiment of the present invention.

  Next, an automatic faucet device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

<Overall configuration>
First, FIG. 1 is a perspective view of a hand wash basin to which an automatic faucet device according to an embodiment of the present invention is applied, viewed obliquely from above. As shown in FIG. 1, the hand-washing machine 5 mainly includes an automatic water faucet device 1 that automatically stops water discharge and water discharge according to the detection state of an object to be detected such as a human body, and the automatic water faucet device 1. A bowl 3 that receives water discharged from the water and drains water from a drain port (not shown).

<Configuration of automatic faucet device>
Next, with reference to FIG. 2 thru | or FIG. 6, the detail of the automatic water tap apparatus by embodiment of this invention is demonstrated.

  FIG. 2 is a diagram for specifically explaining the configuration of the automatic water faucet device according to the embodiment of the present invention. FIG. 2 (A) is a perspective view of the automatic faucet device according to the embodiment of the present invention as seen obliquely from below, and FIG. 2 (B) shows the automatic faucet device in FIG. 2 (A) IIB- It is sectional drawing seen along the IIB line. Here, the configuration near the water discharge portion of the automatic faucet device 1 according to the present embodiment will be mainly described.

  As shown in FIG. 2A, the automatic faucet device 1 has a water discharge pipe 11 which is a curved tubular member. As shown in FIG. 2 (A) and FIG. 2 (B), at the tip of the water discharge pipe 11, a first water discharge unit 12 configured to perform foam water discharge from the first water discharge port 12a, A nozzle-like second water discharger 13 configured to perform spray water discharge (in other words, mist water discharge) from the second water discharge port 13a, a sensor 14 that detects infrared rays, and the like, detects an object to be detected; An LED (Light Emitting Diode) 15 for irradiating light is disposed. Specifically, the sensor 14, the first water outlet 12a, the LED 15, and the second water outlet 13a are arranged in this order from the top to the bottom of the water discharge pipe 11. Further, the water discharge pipe 11 is connected to the first water discharge unit 12, and is connected to the first flow path 17 for supplying water to the first water discharge unit 12 and the second water discharge unit 13. A second flow path 18 that is connected and supplies water (including electrolyzed water described later) to the second water discharger 13 is disposed.

  Here, the 1st water discharge part 12 mixes air with a filter as foam water discharge, and performs the foam-like water discharge which included the bubble in the water flow to discharge. The foam water discharge by the first water discharge unit 12 corresponds to the “first water discharge form” in the present invention. On the other hand, the second water discharger 13 is wider than the cross-sectional area (diameter) of the second water discharge port 13a in which water spreads at a predetermined angle as the spray water discharge from the second water discharge port 13a. Use a mist-like water discharge that spreads water over the area. The spray water discharged by the second water discharge unit 13 corresponds to the “second water discharge form” in the present invention. Further, the second water discharger 13 sprays water at a flow rate lower than that of the first water discharger 12 and sprays water at a flow rate faster than that of the first water discharger 12. In one example, the first water discharger 12 foams and discharges water at 2 liters per minute, and the second water discharger 13 sprays and discharges water at 0.3 liters per minute.

  Next, with reference to FIG. 3, the principle of the spray water discharge of the 2nd water discharge part 13 by this embodiment is demonstrated. FIG. 3 is a longitudinal sectional view of the second water discharger 13 as viewed along the direction of water flow.

  As shown in FIG. 3, in the second water discharger 13, the water flowing in from the inlet 13 b provided at the upper end part causes a straight flow (see arrow A <b> 11) in the internal flow path 13 d and the internal flow. A swirling flow (see arrow A12) is generated in the internal flow path 13d by the water flowing in from the slit portion 13c formed on the outer peripheral surface of the upper end portion of the path 13d. Due to the synergistic effect of the straight flow and the swirl flow, the spray water discharge is performed in a full cone shape from one second water discharge port 13a at the lower end of the internal flow path 13d. Specifically, the water is discharged over a range larger than the cross-sectional area (diameter) of the second water discharge port 13a. In this case, water spreads and is discharged from the second water discharge port 13a at the discharge angle θ. In the foam water discharge by the first water discharge unit 12 described above, since water is discharged in a range almost the same as the cross-sectional area (diameter) of the first water discharge port 12a, the second water discharge port of the second water discharge unit 13 is discharged. The discharge angle θ from 13a is larger than the discharge angle from the first water outlet 12a of the first water discharger 12.

  Next, with reference to FIG. 4, the relationship between the water discharge range of the 2nd water discharge part 13 by this embodiment and the irradiation range of LED15 is demonstrated. FIG. 4 is a cross-sectional view of the automatic faucet device 1 according to the present embodiment, similar to FIG.

  As shown in FIG. 4, in this embodiment, in order to notify the user of the water discharge range R11 of the water sprayed and discharged by the second water discharge unit 13 by the light from the LED 15, the light irradiation range R12 by the LED 15 is: The installation angle of the LED 15 and the irradiation range of the LED 15 are set so as to substantially coincide with the water discharge range R11 by the second water discharge unit 13. For example, the LED 15 is disposed so that the central axis of the LED 15 is substantially parallel to the central axis of the second water discharger 13.

  Next, with reference to FIG. 5, the arrangement | positioning relationship between the 1st water discharging part 12, the 2nd water discharging part 13, and the sensor 14 by this embodiment is demonstrated. FIG. 5 is a cross-sectional view of the automatic faucet device 1 according to the present embodiment, similar to FIG.

  As shown in FIG. 5, in the present embodiment, the second water discharge port 13 a of the second water discharge unit 13 is disposed on the rear side of the first water discharge port 12 a of the first water discharge unit 12. The dripping of water from the first water outlet 12a is prevented from being applied to the second water outlet 13a. In this case, the second water discharge port 13a of the second water discharge unit 13 may prevent the water sprayed from the second water discharge port 13a from being applied to the first water discharge port 12a of the first water discharge unit 12. It is arranged. In addition, the second water discharge port 13a of the second water discharge unit 13 is disposed so as to spray water toward the vicinity of the drain port of the bowl 3 (not shown in FIG. 5). Further, in the present embodiment, the sensor 14 is connected to the second water discharge port 13a of the second water discharge unit 13 so that the hand is appropriately detected by the sensor 14 even if the person does not reach the back so much. Is also arranged on the front side. In other words, the second water discharge port 13 a is disposed behind the sensor 14. By doing so, the water sprayed and discharged from the second water outlet 13a is less likely to be applied to a portion of the user's arm or body that is not desired to be wetted.

  Furthermore, in this embodiment, the sensor 14 and the relationship of the direction of the 2nd water discharging part 13 which the sensor 14 does not detect the water sprayed and discharged from the 2nd water discharging opening 13a of the 2nd water discharging part 13 are shown. Adopted. Specifically, since the detection accuracy of the sensor 14 decreases as the distance from the sensor 14 increases, a directivity range R13 (a range including the detection range of the sensor 14) corresponding to the detection direction A23 related to detection of the detection object by the sensor 14 is detected. The sensor 14 and the second water discharger 13 intersect the water discharge range R11 of the second water discharger 13 at a position distant from the front side. The orientation relationship is adopted. Specifically, the sensor 14 is disposed so that the detection direction A23 of the sensor 14 is directed away from the water discharge direction A22 of the second water discharger 13. In other words, a line L13 (typically corresponding to the central axis of the sensor 14) along the detection direction A23 of the sensor 14 extends in the vertical direction from the center of the second water discharge port 13a of the second water discharge unit 13. The sensor 14 is disposed so as not to cross the line L12 (typically corresponding to the central axis of the second water discharger 13) on the front side.

  Further, in the present embodiment, the first water discharge unit 12 and the second water discharge unit 13 are configured such that the water sprayed from the second water discharge port 13a of the second water discharge unit 13 is not easily applied to the user. The orientation relationship is adopted. Specifically, the first water discharge unit 12 and the second water discharge unit so that the water discharge direction A21 of the first water discharge unit 12 and the water discharge direction A22 of the second water discharge unit 13 are directed away from each other. Each of 13 is arranged. In other words, the line L11 (typically corresponding to the central axis of the first water discharger 12) extending from the center of the first water discharger 12a of the first water discharger 12 and the second water discharger. The first water discharge portion so that a line L12 (typically corresponding to the central axis of the second water discharge portion 13) extending in the vertical direction from the center of the 13 second water discharge ports 13a does not intersect on the front side. 12 and the 2nd water discharging part 13 are each arrange | positioned.

  Next, the functional configuration of the automatic faucet device according to the embodiment of the present invention will be described with reference to FIG. FIG. 6 is a block diagram schematically showing a functional configuration of the automatic water faucet device according to the embodiment of the present invention.

  As shown in FIG. 6, the automatic faucet device 1 according to the present embodiment has a common channel 21 on the upstream side of both the first channel 17 and the second channel 18 (see FIG. 2 and the like). It is connected. The common flow path 21 is supplied with normal water such as general tap water (city water) (in this specification, this water is referred to as “normal water” as appropriate in order to distinguish this water from electrolyzed water). Is done. On the common flow path 21, in order from the upstream side, a stop cock 22 for blocking the flow of normal water in the common flow path 21, a filter 23 for removing foreign matters mixed in normal water, a flow rate on the secondary side Is provided at a constant flow rate, and branches into a first flow path 17 and a second flow path 18 at the downstream end of the common flow path 21.

  The first flow path 17 is provided with a first electromagnetic valve 25 that opens and closes to switch between normal water flow and shut-off in the first flow path 17. When the first electromagnetic valve 25 is open, normal water flows through the first flow path 17 and from the first water discharger 12 connected to the downstream end of the first flow path 17. Usually, water is discharged as foam.

  On the other hand, in the second flow path 18, a second electromagnetic valve 28, a pressure regulating valve 29, a safety valve 30, a check valve 35, and an electrolytic cell 37 are provided in order from the upstream side. The second solenoid valve 28 switches between the flow and the block of normal water in the second flow path 18 by opening and closing. When the second electromagnetic valve 28 is open, the normal water flows into the second flow path 18, and from the second water discharger 13 connected to the downstream end of the second flow path 18. Spray water is discharged. The pressure regulating valve 29 is a valve that adjusts the water pressure to a desired pressure (a pressure suitable for performing spray water discharge). The safety valve 30 is opened when the pressure in the second flow path 18 becomes equal to or higher than a predetermined pressure (for example, when the second water discharge port 13a is blocked and the pressure in the second flow path 18 suddenly increases). In this case, the water in the second flow path 18 flows through the first flow path 17 via the bypass flow path 31 to reduce the pressure in the second flow path 18. The check valve 35 is a valve that prevents back flow of water. When the electrolyzer 37 is energized, it electrolyzes normal water to produce electrolyzed water (the electrolyzer 37 corresponds to the “electrolyzed water generator” in the present invention). A filter may be further provided on the downstream side of the electrolytic cell 37.

  The automatic faucet device 1 further includes a controller 40 that controls components in the automatic faucet device 1 (this controller 40 corresponds to a “control unit” in the present invention). The controller 40 is operated by the power from the AC power source 39 and supplies the power of the AC power source 39 to each of the sensor 14, the LED 15, the first electromagnetic valve 25, the second electromagnetic valve 28, and the electrolytic cell 37. Take control. Specifically, the automatic faucet device 1 acquires a sensor signal indicating the detection state of the object to be detected by the sensor 14, and controls to turn on / off the LED 15 based on the sensor signal, the first electromagnetic valve 25, control for switching opening and closing of the second electromagnetic valve 28, and control for switching execution / stop of electrolyzed water by the electrolytic cell 37.

  Here, the electrolyzed water produced | generated by the electrolytic vessel 37 is demonstrated.

As electrolyzed water used by this embodiment, what is necessary is just water which has the disinfection function obtained by electrolysis. A representative example of electrolyzed water is electrolyzed water containing hypochlorous acid. In general, since clean water or intermediate water contains chlorine ions, free chlorine is produced by electrolysis. Free chlorine exists as hypochlorous acid (HClO) when acidic, and in this form is about 10 times stronger in bactericidal power than hypochlorite ion (ClO ⁻ ), which is an alkaline existence form. Moreover, even if it is neutral, a strong bactericidal power about the middle of it can be obtained. Therefore, the water electrolyzed in the continuous electrolysis tank is sterilized water having a strong sterilizing power.

  As described above, generally used clean water or intermediate water contains chlorine ions, but when used in areas where the chloride ion concentration is low or when a strong bactericidal action is required, salt water Chlorine ions can be supplemented by adding chloride such as.

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

  In addition to chlorine, hypohalous acid obtained by electrolyzing water containing halogen ions may be used.

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

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

<Control by controller>
Next, the control executed by the controller 40 in the embodiment of the present invention will be specifically described.

FIG. 7 is a time chart showing the basic control according to the embodiment of the present invention. FIG. 7 shows, from the top, the sensor signal supplied from the sensor 14 to the controller 40, the drive signal supplied from the controller 40 to the second electromagnetic valve 28, and the drive supplied from the controller 40 to the first electromagnetic valve 25. The signal, the drive signal supplied to the electrolytic cell 37 from the controller 40, and the drive signal supplied to the LED 15 from the controller 40 are shown.
The sensor signal is turned on when the sensor 14 detects a detected object, and turned off when the sensor 14 does not detect the detected object. Hereinafter, a state in which the sensor signal is on and the sensor 14 is detecting an object to be detected is referred to as a “detection state”, and a state in which the sensor signal is off and the sensor 14 is not detecting the object to be detected. This is called “non-detection state”. The drive signal for the second solenoid valve 28 corresponds to the open / close state of the second solenoid valve 28, and the drive signal for the first solenoid valve 25 corresponds to the open / close state of the first solenoid valve 25. The driving signal for the electrolytic cell 37 corresponds to on / off of the electrolytic cell 37 (in other words, the operating / non-operating state of the electrolytic cell 37), and the driving signal for the LED 15 corresponds to the on / off state of the LED 15. To do.

  First, at time t11, the sensor signal is switched from OFF to ON, that is, the sensor 14 is switched from the non-detection state to the detection state. At this time, the controller 40 energizes the second electromagnetic valve 28 to open the second electromagnetic valve 28, and sprays normal water from the second water discharge unit 13. Then, the controller 40 stops energization of the second electromagnetic valve 28 at a time t12 when a predetermined time T5 (for example, 3 seconds) has elapsed from the time t11 when the spray water discharge from the second water discharge unit 13 is started. By closing the second electromagnetic valve 28, the spray water discharge from the second water discharge unit 13 is terminated.

  Then, at time t13 when a certain amount of time (for example, 0.5 seconds) has elapsed from time t12 when the spray water discharge from the second water discharger 13 is terminated, the controller 40 energizes the first electromagnetic valve 25 to The first electromagnetic valve 25 is opened, and normal water is discharged from the first water discharge unit 12 in the form of foam. Thereafter, at time t14, the sensor signal is switched from on to off, that is, the sensor 14 is switched from the detection state to the non-detection state. At this time, the controller 40 stops energization of the first electromagnetic valve 25 and closes the first electromagnetic valve 25, and ends the foam water discharge from the first water discharge unit 12.

  The above-mentioned spray water discharge and foam water discharge correspond to water discharge for washing a user's hand. Hereinafter, water discharge performed for such a purpose is appropriately referred to as “hand-washing water discharge”. The water spouting is used not only for the purpose of washing hands, but also for various purposes such as washing the face, storing water in the bowl 3, washing the toothbrush, etc. The term “hand-washing water discharge” is used to represent hand-washing.

  In addition, it is good to be able to adjust predetermined time T5 which performs spray water discharge in the water discharge for hand-washing. Specifically, an adjustment unit such as a switch is provided in the automatic faucet device 1, and the usage environment of the automatic faucet device 1 (characteristics of the user of the automatic faucet device 1, installation location of the automatic faucet device 1, etc.) Accordingly, it is preferable that an administrator or the like can increase or decrease the predetermined time T5 using the adjustment unit.

  Next, when the non-detected state of the sensor 14 continues for a predetermined time T <b> 1 from time t <b> 14 when the foam water discharge as hand-wash water discharge is completed, the controller 40 causes the second water discharge unit 13 to perform spray water discharge. This spray water discharge is performed to prevent the dirt that has flowed out by hand washing using the hand wash water discharge described above from becoming difficult to remove by drying and adhering to the bowl 3 or the like of the hand washing machine 5. (Hereinafter, water discharge performed for such a purpose is appropriately referred to as “after water discharge” as water discharged after hand-washing water discharge). That is, after a lapse of a predetermined time T1 from the end of the hand-washing water discharge, spray water discharge is performed as after-water discharge, and the dirt is washed away before the dirt from the hand-washing water discharge is dried and fixed. From such a point of view, the predetermined time T1 is set based on the time until the dirt due to the water for hand washing is dried and fixed. For example, the predetermined time T1 is set to 3 seconds.

  Specifically, the controller 40 first turns on the LED 15 at time t15 and irradiates the water discharge range R11 of the spray water discharged by the second water discharge unit 13 with the light of the LED 15 (see FIG. 4). The user is notified that water discharge is performed. Then, the controller 40 energizes the second electromagnetic valve 28 at the time t16 immediately after the time t15 (corresponding to the time after the elapse of the predetermined time T1 from the time t14 when the hand-washing water discharge is finished) to supply the second electromagnetic valve. The valve 28 is opened, and at time t <b> 17 immediately after time t <b> 16, the electrolytic bath 37 is energized to generate electrolytic water in the electrolytic bath 37, so that the electrolytic water is sprayed and discharged from the second water discharge unit 13. In other words, after water discharge. As described above, the energization of the electrolytic cell 37 is started after the energization of the second electromagnetic valve 28 without starting the energization of the second electromagnetic valve 28 and the electrolysis cell 37 at the same time. Electric power is consumed greatly at the timing of switching the electromagnetic valve 28 from the closed state to the open state, so that the electrolytic cell 37 is not energized at the timing of this switching, and an attempt is made to energize the electrolytic cell 37 while the power is stable. Is.

  Thereafter, at time t18 when a predetermined time T3 (for example, 1.9 seconds) has elapsed from time t16 when the second electromagnetic valve 28 is opened, the controller 40 stops energization of the electrolytic cell 37, and the electrolytic cell The generation of electrolyzed water at 37 is terminated. At this time, since the second electromagnetic valve 28 is still open, the spray water discharge from the second water discharge unit 13 is continuously performed. At time t19 after time t18, specifically, at time t19 when a predetermined time T2 (for example, 3.5 seconds) elapses from time t16 when the second electromagnetic valve 28 is opened, the controller 40 detects the LED 15 Is turned off and the irradiation of light from the LED 15 is terminated, and the energization of the second electromagnetic valve 28 is stopped and the second electromagnetic valve 28 is closed, whereby the spray from the second water discharger 13 is sprayed. End water discharge, that is, end after water discharge.

  Here, it is good to extend the life (endurance years) of the electrolytic cell 37 and to perform the control related to the above-mentioned after water discharge.

  In one example, the controller 40 performs after-water discharge every time the hand-wash water discharge is performed a predetermined number of times without performing after-water discharge every time hand-wash water discharge is performed. Specifically, the controller 40 counts the number of times that the hand-washing water discharge has been performed, and does not perform after-water discharge while the counted number of times does not reach the predetermined number of times, and when the counted number reaches the predetermined number of times. After water discharge is performed, the number of times counted at this time is reset, and the number of times water is discharged for hand washing is counted again. In this case, the controller 40 shall apply electrolyzed water when performing after-water discharge.

  In another example, the controller 40 performs after-water discharge every time hand-washing water is discharged, and performs after-water discharge to which electrolytic water is applied and after-water discharge to which electrolytic water is not applied (that is, after-water discharge to which normal water is applied). Switch appropriately. In this case, the controller 40 applies the electrolyzed water every time after-after water discharge is performed a predetermined number of times. Specifically, the controller 40 counts the number of times after-water discharge has been performed, and does not energize the electrolytic cell 37 while the number of times counted has not reached a predetermined number of times, thereby performing after-water discharge using normal water. When the number of times counted reaches a predetermined number, the electrolysis tank 37 is energized to perform after-water discharge using electrolyzed water, and the number of times counted after this is reset and the number of after-water discharge Count again.

  In yet another example, the controller 40 performs after-water discharge every time hand-washing water is discharged, but changes the energization time of the electrolytic cell 37 to perform after-water discharge. That is, the controller 40 changes the concentration of the electrolyzed water to be applied when performing after water discharge. Specifically, the controller 40 learns the usage frequency of the automatic faucet device 1 and adjusts the energization time of the electrolytic cell 37 based on this usage frequency. Specifically, the controller 40 shortens the energization time of the electrolytic cell 37 as the learned usage frequency increases, in other words, increases the energization time of the electrolytic cell 37 as the learned usage frequency decreases.

  In addition, although the control regarding the after-water discharge performed considering the lifetime (endurance years) of the electrolytic cell 37 was described above, it is not limited to performing such control and the bowl 3 of the hand-washer 5 is cleaned. You may perform control regarding after water discharge giving priority to keeping. In this case, the bowl 3 of the hand-washing machine 5 is soiled after the user has washed his / her hand. Therefore, the controller 40 should perform after-water discharge using electrolyzed water every time hand-washing water is discharged.

  Next, referring to FIG. 8, the electrolyzed water is generated only in the initial period (period T3 in FIG. 7) in the period for performing after-water discharge (period T2 in FIG. 7). The reason for flowing normal water without generating electrolyzed water in the later period will be described. FIG. 8 schematically shows the second flow path 18 and the second water discharger 13 on the upstream side of the electrolytic cell 37, and the state of the water in the second flow path 18 during the period of performing after-water discharge. Are shown in chronological order from left to right. In FIG. 8, the normal water and the electrolyzed water in the second flow path 18 are shown in different modes.

  First, at the start of after-water discharge, the controller 40 switches the second electromagnetic valve 28 from closed to open and starts energization to the electrolytic cell 37. Since it is filled with water, normal water is discharged from the second water discharger 13 (see FIG. 8A). Thereafter, the electrolyzed water generated in the electrolyzer 37 flows downstream through the second flow path 18 (see FIG. 8B), and when the electrolyzed water reaches the downstream end of the second flow path 18. That is, when the second water discharger 13 is reached (at this time, the inside of the second flow path 18 is filled with electrolyzed water), the electrolyzed water starts to be discharged from the second water discharger 13 (FIG. 8). (See (C)). Thereafter, the controller 40 stops energization of the electrolytic cell 37 in a state where the second electromagnetic valve 28 is kept open, and stops generation of electrolyzed water in the electrolytic cell 37. Then, normal water is supplied to the second flow path 18 and the electrolyzed water in the second flow path 18 is pushed out, so that the electrolyzed water is discharged from the second water discharger 13, and the second flow The electrolyzed water in the passage 18 is gradually replaced with normal water (see FIG. 8D). Finally, the electrolyzed water in the second flow path 18 is almost eliminated, and the second flow path 18 is filled with normal water (see FIG. 8E). At this time, the controller 40 switches the second electromagnetic valve 28 from open to closed to end the spray water discharge from the second water discharge unit 13, that is, end the after water discharge.

  Thus, in the present embodiment, the second flow path 18 is filled with normal water at the end of after water discharge using electrolyzed water. By doing so, corrosion (deterioration) of the second flow path 18 and the like due to the electrolyzed water staying in the second flow path 18 is suppressed. In this case, after stopping energization of the electrolytic cell 37, the controller 40 has the same amount of normal water or the same volume as the volume of the second flow path 18 (the volume including the second water discharger 13 may be used). By supplying the normal water to the second flow path 18 by keeping the second electromagnetic valve 28 open for the time required for a larger amount of normal water to flow through the second flow path 18, At the end of the after water discharge, a state in which the second flow path 18 is filled with normal water is created.

  In one example, when the volume of the second flow path 18 is 8 cc and the flow rate in the second flow path 18 is 5 cc per second, the second flow path 18 is filled with normal water. Since it takes 1.6 seconds, the controller 40 keeps the second electromagnetic valve 28 open for 1.6 seconds after stopping energization of the electrolytic cell 37, and supplies normal water to the second flow path 18. Supply. In this example, when the after-water discharge is performed for 3.5 seconds (corresponding to the predetermined time T2 shown in FIG. 7), the controller 40 performs the first 1.9 seconds (the predetermined time shown in FIG. 7). (Corresponding to T3), the electrolysis tank 37 is energized with the second electromagnetic valve 28 opened, and the second electromagnetic valve 28 is energized with the electrolysis tank 37 stopped for 1.6 seconds thereafter. Keep open. In such a case, normal water is discharged for the first 1.6 seconds, and electrolyzed water is discharged for the subsequent 1.9 seconds.

  In the example described above, 1.6 seconds is the minimum time required to fill the second flow path 18 with normal water after energization of the electrolytic cell 37 is stopped. It is not limited to keeping the second electromagnetic valve 28 open for 6 seconds and supplying normal water to the second flow path 18, but the second electromagnetic valve 28 is longer than 1.6 seconds. May be kept open to supply normal water to the second flow path 18. This corresponds to supplying normal water in an amount larger than the volume of the second flow path 18 to the second flow path 18 after stopping the energization of the electrolytic cell 37. In such a case, after the electrolyzed water is discharged, the normal water is discharged for a while, and the electrolyzed water discharged to the bowl 3 of the hand-washer 5 can be flushed with the normal water, and the bowl 3 or the eye plate is discharged. It becomes possible to suppress the influence of electrolyzed water.

  Next, with reference to FIG. 9 to FIG. 11, another control example performed based on the above-described basic control (see FIG. 7) in the embodiment of the present invention will be described.

FIG. 9 is a time chart showing a first control example according to the embodiment of the present invention. FIG. 9 shows the sensor signal supplied from the sensor 14 to the controller 40, the drive signal supplied from the controller 40 to the second electromagnetic valve 28, and the drive supplied from the controller 40 to the first electromagnetic valve 25 in order from the top. The signal is shown.
Here, the description of the same control as the basic control described above will be omitted as appropriate. Specifically, since the control from time t21 to time t24 and the control after time t26 are the same as the basic control, description thereof will be omitted, and only control from time t24 to time t26 will be described.

  The basic control described above executes after water discharge when a predetermined time T1 has elapsed since the handwash water discharge, but the first control example performs a predetermined time T1 after executing the handwash water discharge. This is related to the control performed when the sensor 14 is switched from the non-detection state to the detection state. Specifically, in the first control example, the controller 14 is switched from the non-detection state to the detection state at the time t25 before the predetermined time T1 has elapsed after the time t24 when the hand-washing water discharge is terminated. 40 energizes the first electromagnetic valve 25 to open the first electromagnetic valve 25, and causes the first water discharger 12 to discharge the foam. In this case, the controller 40 maintains the first electromagnetic valve 25 in the open state from time t25 when the detection state of the sensor 14 continues to time t26, and performs foam water discharge by the first water discharger 12. That is, water is discharged for hand washing.

  As described above, in the first control example, when the sensor 14 is in a detection state within the period until the after-water discharge after the hand-wash water discharge, the spray water discharge by the second water discharge unit 13 is not performed. The foam water discharge by the 1st water discharge part 12 is performed. In this way, when the sensor 14 is switched from the temporarily non-detection state to the detection state after the hand-wash water discharge is performed (for example, the user temporarily moves the hand outside the detection range of the sensor 14 during the hand-washing). In this case, the foam water discharge as the hand wash water discharge is resumed without starting the spray water discharge as the after water discharge. That is, the user can resume hand washing without waiting for the end of after-water discharge.

Next, FIG. 10 is a time chart showing a second control example according to the embodiment of the present invention. FIG. 10 shows, in order from the top, the sensor signal supplied from the sensor 14 to the controller 40, the drive signal supplied from the controller 40 to the second electromagnetic valve 28, and the drive supplied from the controller 40 to the first electromagnetic valve 25. The signal is shown.
Here, the description of the same control as the basic control described above will be omitted as appropriate. Specifically, since the control from time t31 to time t35 and the control after time t37 are the same as the basic control, description thereof will be omitted, and only control from time t36 to time t37 will be described.

  The second control example relates to control performed when the sensor 14 is switched from the non-detection state to the detection state during the execution of after-water discharge. Specifically, in the second control example, when the sensor 14 is switched from the non-detection state to the detection state at time t36 during execution of after-water discharge, the controller 40 energizes the second electromagnetic valve 28. Stop and close the second electromagnetic valve 28 (when the electrolysis tank 37 is energized, the electrolysis tank 37 is also de-energized), stop spraying water discharge from the second water discharge section 13, and The first electromagnetic valve 25 is energized to open the first electromagnetic valve 25, and foam water is discharged from the first water discharge unit 12. That is, the controller 40 ends the spray water discharge as the after water discharge and starts the foam water discharge as the hand wash water discharge. In this case, the controller 40 maintains the first electromagnetic valve 25 in the open state from time t36 when the detection state of the sensor 14 continues to time t37, and performs foam water discharge by the first water discharger 12. . Then, the controller 40 energizes the second solenoid valve 28 at the time t38 when the non-detection state of the sensor 14 continues for a predetermined time T1 after the time t37 when the hand-washing water discharge is terminated, and the second solenoid valve. 28 is opened, spray water discharge is performed by the second water discharge unit 13, that is, after-water discharge is resumed.

  As described above, in the second control example, when the sensor 14 is in a detection state during the after-water discharge, the spray water discharge by the second water discharge unit 13 is stopped and the foam water discharge by the first water discharge unit 12 is stopped. In other words, the spray water discharge as the after water discharge is stopped and the foam water discharge as the hand wash water discharge is performed. By doing so, the user can perform hand washing without waiting for the end of the after water discharge. In addition, if electrolyzed water in the after-water discharge is applied to the user's hand, rough skin may occur depending on the concentration of the electrolyzed water, or odors peculiar to electrolyzed water (such as chlorine odors) may remain. When the sensor 14 is in a detection state during the execution of after-water discharge, the after-water discharge is stopped to prevent a problem that may occur due to such electrolyzed water being applied to the user's hand.

  Next, FIG. 11 is a time chart showing a third control example according to the embodiment of the present invention. FIG. 11 shows the drive signal supplied to the second electromagnetic valve 28 from the controller 40 on the upper side, and shows the drive signal supplied to the electrolytic cell 37 from the controller 40 on the lower side. Here, the description of the same control as the basic control described above will be omitted as appropriate.

  In the basic control described above, it has been described that the energization of the electrolysis tank 37 is started after the energization of the second electromagnetic valve 28 is started without simultaneously energizing the second electromagnetic valve 28 and the electrolysis tank 37. In the third control example, in addition to this control, the controller 40 does not stop the energization of the second electromagnetic valve 28 and the energization of the electrolytic cell 37 at the same time. The energization of the second solenoid valve 28 is stopped. Specifically, the controller 40 energizes the second electromagnetic valve 28 at time t41, energizes the electrolytic cell 37 at time t42 immediately thereafter, stops energization of the electrolytic cell 37 at time t43, and immediately thereafter. At time t44, the energization of the second solenoid valve 28 is stopped. For example, the controller 40 stops energization of the electrolytic cell 37 and the second electromagnetic valve 28 in such a procedure when the sensor 14 is in a detection state during execution of after-water discharge that generates electrolytic water. .

  As described above, the energization of the second solenoid valve 28 is stopped after the energization of the electrolytic cell 37 is stopped without simultaneously stopping the energization of the second electromagnetic valve 28 and the energization of the electrolytic cell 37. Since a large amount of power is consumed at the timing of switching the second solenoid valve 28 from open to closed, the energization of the electrolytic cell 37 is already stopped at the timing of this switching, and the power is stabilized while the power is stable. The second solenoid valve 28 is to be operated. Note that, during the period in which both the second electromagnetic valve 28 and the electrolytic cell 37 are energized (period from time t42 to time t43), a large amount of electric power is consumed, so that the second electromagnetic valve 28 is supplied. The electric power to be used may be thinned out as appropriate. Specifically, the energization of the second electromagnetic valve 28 may be temporarily stopped. After the second solenoid valve 28 is once opened, the second solenoid valve 28 is hardly closed even if the energization to the second solenoid valve 28 is temporarily stopped. This is because the substantial valve open state of 28 can be maintained.

  Next, a control flow performed by the controller 40 in the embodiment of the present invention will be described with reference to FIGS. 12 and 13. FIG. 12 is a flowchart showing a control flow related to hand-washing water discharge according to the embodiment of the present invention, and FIG. 13 shows a control flow related to after-water discharge according to the embodiment of the present invention performed after the flowchart shown in FIG. It is a flowchart to show. The control flow shown in FIGS. 12 and 13 is obtained by applying the first to third control examples (see FIGS. 9 to 11) to the basic control (see FIG. 7).

  First, the control flow relating to the water for hand washing according to the embodiment of the present invention shown in FIG. 12 will be described.

  First, in step S11, the controller 40 determines whether or not the sensor signal from the sensor 14 has been switched from off to on, that is, whether or not the sensor 14 has been switched from the non-detection state to the detection state. As a result, when the sensor signal is not switched from OFF to ON (step S11: No), the determination in step S11 is performed again. That is, the controller 40 repeatedly performs the determination in step S11 until the sensor signal is switched from off to on.

  On the other hand, when the sensor signal is switched from OFF to ON (step S11: Yes), the process proceeds to step S12, where the controller 40 energizes the second electromagnetic valve 28 to open the second electromagnetic valve 28, Spraying water is discharged from the second water discharge unit 13. By doing so, water discharge for hand washing is started.

  Subsequently, it progresses to step S13 and the controller 40 determines whether 3 second (equivalent to predetermined time T5 shown in FIG. 7) has passed since the spray water discharge as hand-wash water discharge started. As a result, when 3 seconds have not elapsed since the start of spray water discharge (step S13: Yes), the process proceeds to step S14, and the controller 40 determines whether or not the sensor signal from the sensor 14 has been switched from on to off. That is, it is determined whether or not the sensor 14 is switched from the detection state to the non-detection state. As a result, when the sensor signal is switched from on to off (step S14: Yes), the process proceeds to step S15, where the controller 40 stops energization of the second electromagnetic valve 28 and closes the second electromagnetic valve 28. The spray water discharge from the 2nd water discharge part 13 is complete | finished. Thereby, the water discharge for hand-washing will be complete | finished. Thereafter, the process proceeds to step S20 shown in FIG.

  On the other hand, when the sensor signal is not switched from on to off (step S14: No), the process returns to step S13, and the determinations of steps S13 and S14 are performed again. That is, the controller 40 waits for 3 seconds while determining whether or not the sensor signal has been switched from on to off. In this case, the controller 40 continues energizing the second electromagnetic valve 28 and maintains the open state of the second electromagnetic valve 28, thereby continuing the spray water discharge from the second water discharge unit 13. Do.

  On the other hand, when 3 seconds have elapsed since the start of spray water discharge (step S13: No), the process proceeds to step S16, where the controller 40 stops energization of the second electromagnetic valve 28 and the second electromagnetic valve 28. Is closed, and the spray water discharge from the second water discharge unit 13 is terminated.

  Next, the process proceeds to step S <b> 17, and the controller 40 energizes the first electromagnetic valve 25 to open the first electromagnetic valve 25, and starts foam water discharge from the first water discharge unit 12. In this case, the controller 40 starts such foam spouting after a predetermined time (for example, 0.5 seconds) has elapsed since the spray spouting was terminated.

  Next, the process proceeds to step S18, where the controller 40 determines whether or not the sensor signal from the sensor 14 has been switched from on to off, that is, whether or not the sensor 14 has been switched from the detection state to the non-detection state. As a result, when the sensor signal is not switched from on to off (step S18: No), the determination in step S18 is performed again. That is, the controller 40 repeatedly performs the determination in step S18 until the sensor signal is switched from on to off. In this case, the controller 40 continues energization to the first electromagnetic valve 25 and maintains the open state of the first electromagnetic valve 25, thereby continuing the foam water discharge from the first water discharge unit 12. Do.

  On the other hand, when the sensor signal is switched from on to off (step S18: Yes), the process proceeds to step S19, where the controller 40 stops energizing the first electromagnetic valve 25 and closes the first electromagnetic valve 25. The foam water discharge from the first water discharge unit 12 is terminated. Thereby, the water discharge for hand-washing will be complete | finished. Thereafter, the process proceeds to step S20 shown in FIG.

  Next, a control flow relating to after-water discharge according to the embodiment of the present invention shown in FIG. 13 will be described.

  First, in step S20, the controller 40 determines whether or not the sensor signal from the sensor 14 is OFF, that is, determines whether or not the sensor 14 is in a non-detection state. As a result, when the sensor signal is not off (step S20: No), that is, when the sensor signal is switched from off to on, the process returns to step S17 shown in FIG. In this case, as described above, the controller 40 energizes the first electromagnetic valve 25 to open the first electromagnetic valve 25 and causes normal water to be spouted from the first water discharger 12 for hand washing. Perform water discharge again.

  On the other hand, when the sensor signal is OFF (step S20: Yes), the process proceeds to step S21, and the controller 40 has passed 3 seconds (corresponding to the predetermined time T1 shown in FIG. 7) after finishing the hand-washing water discharge. Determine whether or not. As a result, when 3 seconds have not elapsed since the end of hand-washing water discharge (step S21: No), the process returns to step S20, and the determinations of steps S20 and S21 are performed again. In this case, the controller 40 waits for 3 seconds to pass while determining whether the sensor signal is off.

On the other hand, when 3 seconds have elapsed since the end of the hand-washing water discharge (step S21: Yes), the process proceeds to step S22, and the controller 40 turns on the LED 15. Immediately thereafter, in step S23, the controller 40 energizes the second electromagnetic valve 28 to open the second electromagnetic valve 28. Immediately thereafter, in step S24, the controller 40 energizes the electrolytic cell 37. Then, electrolyzed water is generated in the electrolytic cell 37. By carrying out like this, the controller 40 sprays electrolyzed water from the 2nd water discharging part 13, ie, performs after water discharging.
Strictly speaking, the controller 40 passes 3 seconds after ending handwash water discharge so that the second electromagnetic valve 28 opens when 3 seconds have passed since handwash water discharge was finished. The LED 15 is turned on at the previous time point, that is, when a predetermined time of less than 3 seconds has elapsed since the end of hand-washing water discharge.

  Next, in step S25, the controller 40 determines whether or not the sensor signal from the sensor 14 is off, that is, determines whether or not the sensor 14 is in a non-detection state. As a result, when the sensor signal is not off (step S25: No), that is, when the sensor signal is switched from off to on, the process proceeds to step S26. In this case, in step S <b> 26, the controller 40 stops energization to the electrolytic cell 37 and ends the generation of the electrolyzed water in the electrolytic cell 37. Immediately thereafter, in step S27, the controller 40 turns off the LED 15, stops the energization of the second electromagnetic valve 28, and closes the second electromagnetic valve 28. By carrying out like this, the controller 40 complete | finishes the spray water discharge from the 2nd water discharge part 13, ie, ends an after water discharge. Thereafter, the process returns to step S17 shown in FIG. 12, and as described above, the controller 40 energizes the first electromagnetic valve 25 to open the first electromagnetic valve 25, and from the first water discharger 12. Usually, the water is discharged as foam and the water for hand washing is discharged again.

  On the other hand, when the sensor signal is off (step S25: Yes), the process proceeds to step S28, and the controller 40 starts 1.9 seconds after the start of after-water discharge (corresponding to the predetermined time T3 shown in FIG. 7). It is determined whether or not it has elapsed. As a result, when 1.9 seconds have not elapsed since the start of after-water discharge (step S28: No), the process returns to step S25, and the determinations of steps S25 and S28 are performed again. In this case, the controller 40 waits for 1.9 seconds to elapse while determining whether or not the sensor signal is off.

  On the other hand, when 1.9 seconds have elapsed since the start of after-water discharge (step S28: Yes), the process proceeds to step S29, where the controller 40 stops energization of the electrolytic cell 37 and performs electrolysis in the electrolytic cell 37. Finish the water production.

  Next, in step S30, the controller 40 determines whether or not the sensor signal from the sensor 14 is OFF, that is, determines whether or not the sensor 14 is in a non-detection state. As a result, if the sensor signal is not off (step S30: No), that is, if the sensor signal is switched from off to on, the process proceeds to step S27. In this case, in step S27, the controller 40 turns off the LED 15, stops energization of the second electromagnetic valve 28, and closes the second electromagnetic valve 28. By carrying out like this, the controller 40 complete | finishes the spray water discharge from the 2nd water discharge part 13, ie, ends an after water discharge. Thereafter, the process returns to step S17 shown in FIG. 12, and as described above, the controller 40 energizes the first electromagnetic valve 25 to open the first electromagnetic valve 25, and from the first water discharger 12. Usually, the water is discharged as foam and the water for hand washing is discharged again.

  On the other hand, when the sensor signal is OFF (step S30: Yes), the process proceeds to step S31, and the controller 40 starts 3.5 seconds after the start of after-water discharge (corresponding to the predetermined time T2 shown in FIG. 7). It is determined whether or not it has elapsed. As a result, when 3.5 seconds have not elapsed since the start of after-water discharge (step S31: No), the process returns to step S30, and the determinations of steps S30 and S31 are performed again. In this case, the controller 40 waits for 3.5 seconds while determining whether or not the sensor signal is off.

  On the other hand, when 3.5 seconds have elapsed since the start of after-water discharge (step S31: Yes), the process proceeds to step S32, and the controller 40 turns off the LED 15 and energizes the second electromagnetic valve 28. The operation is stopped and the second electromagnetic valve 28 is closed. By carrying out like this, the controller 40 complete | finishes the spray water discharge from the 2nd water discharge part 13, ie, ends an after water discharge.

<Effect>
Next, the effect of the automatic water faucet device according to the embodiment of the present invention will be described.

  According to the present embodiment, while the sensor 14 is detecting an object to be detected, spray water is discharged from the second water discharge unit 13 first, and the spray water discharge is started for a predetermined time T5 (for example, 3 seconds). Since the spray water discharge is stopped and the foam water discharge is performed from the first water discharge unit 12 (see FIG. 7), first, hand washing is performed using the spray water discharge having a small flow rate but a high flow rate and a wide water discharge range. Can be efficiently performed, and thereafter, not only hand washing but also face washing and water storage can be efficiently performed by using foam water discharged with a large flow rate. Therefore, it is possible to appropriately save water while ensuring user convenience. In particular, according to the present embodiment, since it is automatically switched to foam water discharge after spray water discharge, when performing operations other than hand washing (face washing, water storage, etc.) or operations for a relatively long time such as hand washing using soap Even when the user does not perform any special operation or consciousness, the user is automatically switched to the foam water spouting, so that high convenience is ensured.

  In addition, according to the present embodiment, the foam water discharge from the first water discharger 12 is performed after a certain amount of time (for example, 0.5 seconds later) after the spray water discharge from the second water discharger 13 is stopped. Since it starts (refer FIG. 7), ie, it stops temporarily between spray water discharge and foam water discharge, a user can be notified of completion of spray water discharge. As a result, the user can be given a kick to stop hand washing and the like, and water can be effectively saved.

  Moreover, according to this embodiment, since it was comprised so that the predetermined time T5 which performs spray water discharging in hand-washing water discharge could be changed, according to the use environment of the automatic water faucet device 1, either a user's convenience or water saving Depending on whether priority is given, the predetermined time T5 during which the spray water is discharged can be appropriately adjusted. For example, in an environment in which dirt that is difficult to remove adheres to the hand and a relatively long hand wash is required, the predetermined time T5 for spraying water discharge is shortened, giving priority to user convenience over water saving. it can.

Further, according to the present embodiment, the sensor 14 stops detecting the object to be detected, and the sensor 14 detects the object to be detected until a predetermined time T1 (for example, 3 seconds) elapses after the water discharge for hand washing is stopped. When it detects (refer FIG. 9), it does not perform the spray water discharge from the 2nd water discharging part 13 again, but does the foam water discharging from the 1st water discharging part 12, and ensures a user's convenience appropriately can do. For example, when the user temporarily moves his / her hand out of the detection range of the sensor 14 during hand washing and then tries to draw water with his hand or wash his hand with soap, he / she does not use water spray. Since water is discharged, convenience for the user can be ensured.
When the sensor 14 detects the detected object during a predetermined time T1 (for example, 3 seconds) after the sprayed water is stopped after the sensor 14 stops detecting the detected object during the sprayed water. Determines whether to perform spray water discharge again from the viewpoint of saving water, to perform foam water discharge for convenience, or to perform spray water discharge or foam water discharge according to the elapsed time after spray water discharge is stopped. You may do it.

  Furthermore, according to the present embodiment, when the sensor 14 is in the detection state, hand-washing water discharge is performed, and when the sensor 14 is in the non-detection state, the hand-washing water discharge is terminated, and thereafter the after-water discharge is performed (see FIG. 7), after-water discharge can be performed properly when there is a possibility that dirt flowing out by hand-washing using hand-washing water will adhere and adhere to the bowl 3 of the hand-washer 5 and the like, and waste water can be appropriately discharged. It is possible to prevent such dirt from being dried and fixed in a state where the dirt adheres to the bowl 3 of the hand-washing machine 5 or the like while suppressing water discharge. Therefore, the bowl 3 etc. of the hand-washing machine 5 can be kept clean. In particular, according to the present embodiment, after water discharge is performed using electrolyzed water, the bowl 3 of the hand-washing machine 5 can be effectively kept clean.

  Moreover, although the water (sewage) which flowed out by hand washing using the water for hand washing tends to fall in a wide range, according to the present embodiment, after spraying using spray water spouting with a wide water discharge angle from the water outlet Therefore, water can be discharged over a wide range with a small flow rate, and the bowl 3 of the hand washing machine 5 can be effectively kept clean while effectively suppressing unnecessary water discharge. In this case, it is difficult for the user to predict the water discharge range R11 of the spray water discharge, but according to the present embodiment, the LED 15 irradiates a range R12 that is substantially the same as the water discharge range R11 of the spray water discharge (see FIG. 4). ), It is possible to appropriately notify the user of the water discharge range R11 of the spray water discharge, and it is possible to prevent the user from landing on a place that the user does not want. In particular, according to the present embodiment, the spray water discharge range R11 is previously notified to the user by the light from the LED 15 before the spray water discharge is started (see FIG. 7). It is possible to effectively suppress water landing.

  In addition, according to the present embodiment, after the hand-washing water discharge is finished, after the non-detection state of the sensor 14 continues for a predetermined time, after-water discharging is performed (see FIG. 7). The user can be notified of the start of after-water discharge. If electrolyzed water from after-water discharge is applied to the user's hand, rough skin may occur depending on the concentration of the electrolyzed water, or odors peculiar to electrolyzed water (such as chlorine smell) may remain. In this way, by notifying the user of the start of after-water discharge, it is possible to appropriately prevent problems that may occur when the electrolytic water is applied to the user's hand.

  Further, according to the present embodiment, when the sensor 14 is in a detection state during the after-water spouting, the spray water discharge is stopped and the foam water discharge is performed, that is, the after-water discharge is stopped and the hand-washing water discharge is performed ( 10), the user can perform hand washing without waiting for the end of after-water discharge, and the above-described problems that can occur when electrolytic water is applied to the user's hand can be prevented.

  Further, according to the present embodiment, when the after-water discharge is started, the energization of the electrolytic cell 37 is started after the energization of the second electromagnetic valve 28 is started, and the electrolysis cell 37 is energized in a state where the power is stable. When the after-water discharge is terminated, the energization of the second solenoid valve 28 is stopped after the energization of the electrolytic cell 37 is stopped, and the second solenoid valve 28 is opened while the power is stable. Therefore, it is possible to appropriately cope with a power source having a small capacity and to reduce the size of the apparatus.

  In addition, according to the present embodiment, every time handwashing water discharge is performed, after every time handwashing water discharge is performed a predetermined number of times, after water discharge is performed, or the use frequency of the automatic faucet device 1 is learned. By adjusting the energization time of the electrolytic cell 37 based on this frequency of use, the load applied to the electrolytic cell 37 can be reduced, and the life (durable years) of the electrolytic cell 37 can be extended.

  Furthermore, according to the present embodiment, in the after discharge, after the electrolyzed water is discharged from the second water discharge unit 13, the energization of the electrolytic cell 37 is stopped and the electrolyzed water is supplied to the second flow path 18. Is stopped and normal water is supplied to the second flow path 18 (see FIGS. 7 and 8), and the electrolyzed water in the second flow path 18 is discharged by the supplied normal water and replaced with normal water. Thus, the concentration of the electrolyzed water in the second flow path 18 can be reduced (when a sufficient amount of normal water is supplied, almost all of the electrolyzed water in the second flow path 18 is discharged to 2 can be filled with normal water). Thereby, corrosion (deterioration) of the second channel 18 and the like due to the electrolyzed water staying in the second channel 18 can be suppressed. Here, a method of adjusting the concentration of the electrolyzed water in order to suppress the corrosion of the second flow path 18 and the like is conceivable. In this case, it is necessary to limit the concentration of the electrolyzed water to a concentration at which the corrosion is suppressed. However, according to the present embodiment, since normal water is supplied to the second flow path 18 as described above, the electrolytic water having various concentrations can be obtained without considering the corrosion of the second flow path 18 and the like. Can be applied.

  On the other hand, according to this embodiment, the first water discharge port 12a of the first water discharge unit 12, the second water discharge port 13a of the second water discharge unit 13, and the sensor 14 are provided at the distal end. In the faucet device 1, since the first water outlet 12a is disposed between the sensor 14 and the second water outlet 13a (see FIG. 2B), the sensor 14 and the second water outlet 13a. Can be separated from each other, and erroneous water discharge caused by the sensor 14 detecting water sprayed and discharged from the second water outlet 13a can be suppressed. In particular, according to this embodiment, since the LED 15 is further disposed between the first water outlet 12a and the second water outlet 13a (see FIG. 2B), the sensor 14 and the second water outlet 13a. The water discharge port 13a can be further separated, and erroneous water discharge as described above can be effectively suppressed. In addition, since the LED 15 is disposed in the vicinity of the second water discharge port 13a, the water discharge range R11 of the second water discharge unit 13 can be appropriately irradiated by the light from the LED 15.

  Moreover, according to this embodiment, since the sensor 14 is arrange | positioned ahead of the 2nd water outlet 13a (refer FIG.2 (B)), a sensor is located behind the 2nd water outlet 13a. Compared with the case where 14 is provided, in order for the user to detect the hand by the sensor 14, it is not necessary to force the hand to extend backward. In addition, since the second water outlet 13a is disposed on the rear side of the sensor 14 (see FIG. 2B), the second water outlet 13a is disposed on the front side of the sensor 14. Compared to the above, the water sprayed and discharged from the second water discharge port 13a is less likely to be applied to the user.

  Further, according to the present embodiment, the sensor 14 is arranged so that the detection direction A23 of the sensor 14 is away from the water discharge direction A22 of the second water discharger 13, so in other words, the sensor 14 The sensor 14 is disposed so that the line L13 along the detection direction A23 does not intersect the line L12 extending in the vertical direction from the center of the second water outlet 13a of the second water discharger 13 on the front side. Therefore (see FIG. 5), the detection accuracy in the directivity range R13 of the sensor 14 intersects with the water discharge range R11 of the second water discharge unit 13 at a portion where detection accuracy is considerably low (that is, a portion far from the sensor 14 in the directivity range R13). In addition, it is possible to more effectively suppress erroneous water discharge caused by the sensor 14 detecting water sprayed and discharged from the second water discharge port 13a.

  Further, according to the present embodiment, the first water discharger 12 and the first water discharger 12 are arranged so that the water discharge direction A21 of the first water discharger 12 and the water discharge direction A22 of the second water discharger 13 are directed away from each other. Since each of the two water discharge portions 13 is disposed, in other words, a line L11 extending in the vertical direction from the center of the first water discharge port 12a and a line L12 extending in the vertical direction from the center of the second water discharge port 13a. Since each of the 1st water discharging part 12 and the 2nd water discharging part 13 is arrange | positioned so that it may not cross | intersect on the front side (refer FIG. 5), it faces toward the downward direction from the 2nd water discharging part 13 Spray water discharge can be performed, and it is possible to appropriately prevent the water sprayed and discharged from the second water discharge unit 13 from being applied to the user.

  Moreover, according to this embodiment, since the 2nd spout 13a is arrange | positioned in the back side rather than the 1st spout 12a (refer FIG.2 (B)), from the 1st spout 12a It is possible to appropriately prevent water dripping from being applied to the second water discharge port 13a. In this case, according to the present embodiment, by applying the direction of the second water discharge unit 13 taking into account the position of the first water discharge port 12a, the water sprayed and discharged from the second water discharge port 13a is obtained. It can prevent appropriately that it falls on the 1st spout 12a.

<Modification>
Next, a modification of the above embodiment will be described.

(Modification 1)
In the above-described embodiment, the foam water discharge is performed from the first water discharge unit 12, that is, the foam water discharge is shown as the first water discharge form in the present invention, but the foam water discharge is the first water discharge form in the present invention. The application is not limited. As a first water discharge form in the present invention, water is discharged from a large number of water outlets having a small diameter in a shower shape, or water is linearly supplied from one or more water outlets having a relatively large diameter. Various water discharge forms such as a straight water discharge to be discharged (strictly speaking, the foam water discharge shown in the above embodiment is included in this straight water discharge) and a water discharge form combining foam water discharge and shower water discharge are applicable. is there. However, as the first water discharge form, at least a water discharge form having a smaller water discharge angle from the water discharge port than the second water discharge form (spray water discharge) is applied.

(Modification 2)
In the embodiment described above, after water discharge is performed using electrolyzed water, but after water discharge may be performed using normal water without using electrolyzed water. In that case, the electrolytic cell 37 may not be provided on the second flow path 18. Even with such after-water discharge using normal water, it is possible to prevent the dirt that has flowed out by hand washing from adhering to the bowl 3 or the like of the hand-washing machine 5 and drying.

(Modification 3)
In the above-described embodiment, the water discharge from the first water discharge unit 12 and the water discharge from the second water discharge unit 13 are switched using the two electromagnetic valves of the first electromagnetic valve 25 and the second electromagnetic valve 28. However, the water discharge from the first water discharge unit 12 and the water discharge from the second water discharge unit 13 may be switched using only one electromagnetic valve.

  With reference to FIG. 14, the functional configuration of an automatic faucet device according to a modification of the embodiment of the present invention using only one electromagnetic valve will be described. FIG. 14 is a block diagram schematically showing a functional configuration of an automatic faucet device according to a modification of the embodiment of the present invention. Here, the same components as those of the automatic faucet device 1 shown in FIG. 6 are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 14, the automatic faucet device 1 a according to the modification is shown in FIG. 6 in that it has an electromagnetic valve 51 and a switching valve 52 instead of the first electromagnetic valve 25 and the second electromagnetic valve 28. The configuration is different from the automatic faucet device 1. The electromagnetic valve 51 is provided on the common flow path 21 and is opened and closed by control from the controller 40 to switch between normal water flow and blocking in the common flow path 21. The switching valve 52 is provided at a connection point between the common flow path 21 and the first flow path 17 and the second flow path 18, in other words, at a branch point at the downstream end of the common flow path 21. The switching valve 52 operates under the control of the controller 40 to switch the flow path through which normal water flows to either the first flow path 17 or the second flow path 18.

  The switching valve 52 described above is configured as an electric valve controlled by the controller 40, but instead of such a switching valve 52, a mechanical valve driven by water pressure is applied as the switching valve. May be. When a switching valve as a mechanical valve is applied, the opening of the electromagnetic valve 51 provided on the common flow path 21 upstream of the switching valve is adjusted to adjust the water pressure applied to the switching valve. Thus, the flow path for flowing normal water may be switched between the first flow path 17 and the second flow path 18.

(Modification 4)
In the above-described embodiment, the automatic faucet device according to the present invention is applied to the hand washing machine 5, but the application of the present invention is not limited to this. The automatic faucet device according to the present invention may be applied to a kitchen or the like.

DESCRIPTION OF SYMBOLS 1 Automatic faucet device 3 Bowl 5 Hand wash basin 11 Water discharge pipe 12 1st water discharge part 12a 1st water discharge port 13 2nd water discharge part 13a 2nd water discharge port 14 Sensor 15 LED
17 1st flow path 18 2nd flow path 21 Common flow path 25 1st solenoid valve 28 2nd solenoid valve 37 Electrolyzer 40 Controller

Claims (4)

An automatic faucet device that automatically discharges water when it detects a detected object,
A sensor for detecting the detected object;
A first water discharger for discharging water in a first water discharge form;
The discharge angle of water from the water outlet is larger than that of the first water discharge form by the first water discharge part, and the flow rate of water discharged is higher than that of the first water discharge form by the first water discharge part. A second water discharger that discharges water in a second water discharge mode with a low flow rate of water;
A controller that performs control to switch between water discharged from the first water discharger and water discharged from the second water discharger;
The control unit first causes the second water discharger to discharge water while the sensor is detecting the object to be detected, and starts discharging water from the second water discharger. When time elapses, water discharge from the second water discharge unit is stopped , and when water discharge from the second water discharge unit is stopped, water discharge from the first water discharge unit is started when a second predetermined time elapses. ,
An automatic faucet device characterized by that. Further comprising an adjustable adjusting unit the first predetermined time, the automatic faucet apparatus of claim 1. The control unit is configured to wait until a third predetermined time elapses after the sensor no longer detects an object to be detected during the water discharge of the first water discharge unit and stops water discharge from the first water discharge unit. in the case where the sensor detects the detection object to perform the water discharge from the first jetting unit, the automatic faucet apparatus according to claim 1 or 2. The control unit is configured to wait until a third predetermined time elapses after the sensor no longer detects an object to be detected during the water discharge of the second water discharge unit and stops water discharge from the second water discharge unit. The automatic faucet device according to any one of claims 1 to 3 , wherein when the sensor detects an object to be detected, water is discharged from the first water discharge portion or the second water discharge portion.

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