JP6736025B2 - Automatic faucet device - Google Patents

Description

The present invention relates to an automatic water faucet device, and more particularly, to an automatic water faucet device for spraying water in the form of mist.

Conventionally, various attempts have been made to realize water saving in a faucet device. Among them, spray water discharge that sprays water in a mist at a low flow rate is effective for saving water. For example, Patent Document 1 discloses a technique in which a predetermined device is attached to a tap of a water supply to perform spray water discharge from the water supply. Further, for example, Patent Document 2 discloses a faucet device capable of manually switching a plurality of types of water discharge including spray water discharge (mist water discharge).

Jitsubo No. 3008055 Publication Japanese Utility Model Publication No. 7-31969

By the way, when the above-mentioned spray spouting is attempted to be performed by an automatic faucet device that automatically spouts water when a sensor detects an object to be detected, spray spouting is performed because the spouting range is wide. It is possible that the sensor may detect water. In that case, the automatic faucet device discharges water by mistake, which is not desirable from the viewpoint of saving water.

Therefore, an object of the present invention is to provide an automatic faucet device capable of appropriately suppressing erroneous water discharge caused by a sensor detecting water sprayed and discharged.

In order to achieve the above-mentioned object, the present invention is an automatic faucet device that automatically discharges water when a detected object is detected, and a sensor that detects the detected object and a first water discharge port that is detected by the sensor. It has a first ejection water unit for jetting water, and the second water portion of the water discharge to water spreads at a predetermined angle from the second water outlet, from the tip portion of the automatic faucet device, the sensor, the second A second water discharge port of the water discharge unit is provided, and the sensor is arranged such that a detection direction for detecting an object to be detected faces away from the water discharge direction of the second water discharge unit. , sensing direction to detect the detection object is disposed so as to face in parallel with the water discharge direction of the first water portion, the first water outlet of the first ejection water unit, the sensor and the second water It is characterized in that it is arranged between the second water discharge port of the section.
In the present invention thus configured, in the automatic faucet device in which the water spouting portion and the sensor are provided at the tip end portion, the sensor is arranged so that the detection direction of the sensor faces away from the water spouting direction of the second water spouting portion. In other words, the sensor is arranged so that the line along the detection direction of the sensor does not intersect with the line extending in the vertical direction from the approximate center of the second water discharge port of the second water discharge portion on the front side. Since it is installed, the sensor detects the water discharged from the second water discharge port of the second water discharge section at a predetermined angle and appropriately suppresses the automatic faucet device from sprinkling water by mistake. be able to.

In the present invention, preferably, the sensor is arranged on the front side which is the front side of the automatic faucet device with respect to the second water discharge port of the second water discharge part.
In the present invention thus configured, since the sensor is arranged on the front side of the second spout of the second spout, the sensor is arranged on the rear side of the second spout of the second spout. Compared with the case where it is arranged, the user does not have to forcibly extend the hand to the rear side in order to make the sensor detect the hand. In other words, the configuration of the present invention is such that the second water outlet of the second water outlet is provided on the rear side of the sensor. According to this, compared with the case where the 2nd spout of the 2nd spout part is arrange|positioned ahead of a sensor, the water spouted in a wide range from the 2nd spout of the 2nd spout part splashes on a user. It gets harder.

In the present invention, preferably, the tip of the sensor is located at the same position as the tip of the second spout of the second water spout or at the back of the automatic faucet device than the tip of the second spout of the second water spout. It is arranged on the rear side.
In the present invention having such a configuration, the tip of the sensor is provided at the same position as the tip of the second water discharge portion or behind the tip of the second water discharge port of the second water discharge portion. In other words, the tip of the second water discharge port of the second water discharge portion is arranged at the same position as the tip of the sensor or on the front side of the tip of the sensor. According to this, compared with the case where the tip of the sensor is arranged in front of the tip of the second spout of the second spout, the detection range of the sensor and the water spouted from the second spout of the second spout are compared. The density of the discharged water becomes low in the part where the range overlaps. Therefore, the sensor can detect the water discharged from the second water outlet of the second water discharger, as compared with the case where the tip of the sensor is arranged in front of the tip of the second water discharger of the second water discharger. It is possible to more effectively suppress erroneous water discharge due to

In the present invention, preferably, the lighting unit further includes a lighting unit that irradiates the water discharged by the second water discharging unit with light, the lighting unit is provided at a front end of the automatic faucet device, and the front end of the lighting unit is closer to the front end of the sensor. Is also provided on the rear side, which is the inner side of the automatic faucet device .
In the present invention having such a configuration, the tip of the illumination unit is arranged rearward of the tip of the sensor. In other words, the tip of the sensor is arranged on the front side of the illumination unit. Therefore, the distance between the detection range of the sensor and the portion overlapping the irradiation range from the illumination unit is longer than that in the case where the tip of the illumination unit is provided in front of the tip of the sensor. Since the irradiation intensity of light is attenuated according to the distance, the irradiation intensity becomes low in the portion where the detection range of the sensor 14 and the irradiation range from the LED 15 overlap. Therefore, it is possible to appropriately irradiate the water discharge of the second water discharge part with the light from the illuminating part, and to irradiate from the irradiating part compared to the case where the tip of the illuminating part is arranged in front of the tip of the sensor. It is possible to effectively suppress erroneous water discharge caused by the sensor detecting the emitted light.

In the present invention, preferably, the tip of the illumination unit is arranged on the rear side, which is the inner side of the automatic faucet device, than the tip of the second water outlet of the second water discharge unit.
In the present invention thus configured, the tip of the illumination section is disposed on the rear side of the tip of the second water discharge port of the second water discharge section. In other words, the front end of the second water discharge port of the second water discharge unit is arranged on the front side of the illumination unit. According to this, since the light emitted from the irradiation unit has a larger influence on the sensor than the water discharged from the second water discharge port of the second water discharge unit, the light emitted from the irradiation unit is more affected than the tip of the second water discharge port of the second water discharge unit. As compared with the case where the tip of the illumination unit is provided on the front side, it is possible to more effectively suppress erroneous water discharge due to the sensor detecting the light emitted from the irradiation unit.

According to the automatic faucet device of the present invention, it is possible to properly suppress erroneous water discharge due to the detection of water sprayed and discharged by the sensor.

FIG. 1 is a perspective view of a hand washing device to which an automatic faucet device according to an embodiment of the present invention is applied, as seen obliquely from above. It is a figure for explaining concretely the composition of the automatic faucet device by the embodiment of the present invention, and Drawing 2 (A) is a perspective view which looked at this automatic faucet device from the slanting lower part. FIG. 2B is a sectional view of the automatic faucet device taken along line IIB-IIB in FIG. It is a longitudinal cross-sectional view of this 2nd water discharge part for demonstrating the principle of the spray water discharge of the 2nd water discharge part by embodiment of this invention. It is sectional drawing of the automatic water faucet device by embodiment of this invention for demonstrating the relationship between the water discharge range of the 2nd water discharge part and LED irradiation range by embodiment of this invention. It is sectional drawing of the automatic water faucet device by embodiment of this invention for demonstrating the arrangement|positioning relationship of the 1st water spout part by the embodiment of this invention, the 2nd water spout part, a sensor, and an irradiation part. It is a block diagram which shows roughly the functional composition of the automatic faucet device by the embodiment of the present invention. 3 is a time chart showing basic control according to the first embodiment of the present invention. It is a schematic diagram which shows the state of the water in a 2nd flow path in a time series from left to right in the period which performs after-water discharge by 1st Embodiment of this invention. 6 is a time chart showing a first control example according to the first embodiment of the present invention. 7 is a time chart showing a second control example according to the first embodiment of the present invention. 8 is a time chart showing a third control example according to the first embodiment of the present invention. It is a flow chart which shows the control flow concerning the spout for hand washing by a 1st embodiment of the present invention. It is a flowchart which shows the control flow which concerns on after-water discharge by 1st Embodiment of this invention performed after the flowchart shown in FIG. It is a time chart which shows basic control by a 2nd embodiment of the present invention. It is a flow chart which shows the control flow concerning the spout for hand washing by a 2nd embodiment of the present invention. It is a block diagram which shows schematically the functional structure of the automatic water faucet device by the modification in the embodiment of this invention. FIG. 17 is a diagram for specifically explaining the configuration of the automatic water faucet device according to the third embodiment of the present invention, and FIG. 17(A) is a perspective view of the automatic water faucet device seen obliquely from below; 17(B) is a sectional view of the automatic faucet device in FIG. 17(A). It is sectional drawing of the automatic water faucet device by 3rd Embodiment of this invention for demonstrating the arrangement|positioning relationship of the 2nd water discharge part by 3rd Embodiment of this invention, a sensor, and an irradiation part. It is a block diagram which shows schematically the functional structure of the automatic water faucet device by 3rd Embodiment of this invention. It is a time chart which shows control by a 3rd 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 structure>
First, FIG. 1 is a perspective view of a hand washing device to which an automatic water faucet device according to an embodiment of the present invention is applied, as viewed obliquely from above. As shown in FIG. 1, the hand-washing device 5 mainly includes an automatic faucet device 1 that automatically performs spouting and stopping the spouting of water according to a detection state of a detected object such as a human body, and the automatic faucet device 1. And a bowl 3 for receiving the water discharged from the drain and draining it from a drain port (not shown).

<Structure of automatic faucet device>
Next, the details of the automatic faucet device according to the embodiment of the present invention will be described with reference to FIGS. 2 to 6.

FIG. 2 is a diagram for specifically explaining the configuration of the automatic faucet device according to the embodiment of the present invention. FIG. 2A is a perspective view of the automatic faucet device according to the embodiment of the present invention as seen obliquely from below, and FIG. 2B shows the automatic faucet device IIB- in FIG. 2A. It is sectional drawing seen along the IIB line. Here, the configuration near the water discharge part 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), a tip portion of the water discharge pipe 11 is provided with a first water discharge portion 12 configured to perform foam water discharge from a first water discharge outlet 12a. A nozzle-shaped second water discharger 13 configured to perform spray water discharge (in other words, mist water discharge) from the second water discharge outlet 13a, and a sensor 14 that detects an object, such as infrared rays, and the like. An LED (Light Emitting Diode) 15 that emits light is provided. 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 outlet pipe 11. Further, inside the water discharge pipe 11, the first water discharge part 12 is connected to the first flow path 17 for supplying water to the first water discharge part 12, and the second water discharge part 13. A second flow path 18 that is connected and supplies water (including electrolyzed water described below) to the second water discharger 13 is provided. The second water discharger 13 corresponds to the "water discharger" in the present invention.

Here, the 1st water spouting part 12 mixes air with a filter as foam spouting, and performs foam-like spouting in which the water flow to be discharged contains bubbles. On the other hand, the second water discharger 13 is a sprayed water discharge so that the water spreads from the second water discharge outlet 13a at a predetermined angle, in other words, wider than the cross-sectional area (diameter) of the second water discharge outlet 13a. A fog-like water discharge is performed so that the water spreads over the area. 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 faster flow rate than the first water discharger 12. In one example, the 1st water discharge part 12 spouts water at 2 liters per minute, and the 2nd water discharge part 13 sprays water at 0.3 liters per minute.

Next, the principle of spray water discharge of the second water discharger 13 according to the present embodiment will be described with reference to FIG. FIG. 3 is a vertical cross-sectional view of the second water discharger 13 as seen along the flow direction of water.

As shown in FIG. 3, in the second water discharge part 13, the water flowing from the inflow port 13b provided at the upper end causes a straight flow (see an arrow A11) in the internal flow path 13d and the internal flow. A swirling flow (see arrow A12) is generated in the internal flow passage 13d by the water flowing in from the slit portion 13c formed on the outer peripheral surface of the upper end portion of the passage 13d. Due to such a synergistic effect of the straight flow and the swirling flow, the spray water is sprayed in a full cone shape from the 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, the water is spread and discharged from the second water discharge port 13a at the discharge angle θ. In the foam water discharge by the above-mentioned first water discharge part 12, since water is discharged in a range substantially 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 part 13 is discharged. The discharge angle θ from 13a is larger than the discharge angle from the first water discharge port 12a of the first water discharge unit 12.

Next, the relationship between the water discharge range of the second water discharger 13 and the irradiation range of the LED 15 according to the present embodiment will be described with reference to FIG. FIG. 4 is a sectional view of the automatic faucet device 1 according to the present embodiment, which is similar to FIG. 2B.

As shown in FIG. 4, in the present embodiment, in order to inform the user of the water discharge range R11 of the water sprayed and discharged by the second water discharge part 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 match the water discharge range R11 by the second water discharger 13. For example, the LED 15 is arranged such 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, an arrangement relationship among the first water discharger 12, the second water discharger 13, the sensor 14, and the LED 15 according to the present embodiment will be described. FIG. 5 is a sectional view of the automatic faucet device 1 according to the present embodiment, which is similar to FIG. 2(B).

As shown in FIG. 5, in the present embodiment, the sensor 14 and the second water spouting portion are such that it is difficult for the sensor 14 to detect the water sprayed and spouted from the second spout 13a of the second water spouting portion 13. The orientation relationship with 13 is adopted. Specifically, the detection accuracy of the sensor 14 decreases as the distance from the sensor 14 increases. Therefore, the directional range R13 (the range including the detection range of the sensor 14) corresponding to the detection direction A23 related to the detection of the object to be detected by the sensor 14 is detected. (Specifically, it corresponds to a range in which the detection range is extended to the front), but the sensor 14 and the second water discharger 13 are arranged so as to intersect with the water discharge range R11 of the second water discharger 13 at a distant position on the front side. The orientation relationship with is adopted. Specifically, the sensor 14 is arranged 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, the 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 outlet 13a of the second water outlet 13. The sensor 14 is arranged so as not to intersect the line L12 (typically corresponding to the central axis of the second water discharger 13) on the front side.

In addition, in the present embodiment, the sensor 14 is disposed above the second spout 13a of the second spouting portion 13 so that the sensor 14 can properly detect the hand even if the person does not reach so far. Is also arranged on the front side. In other words, the second water discharge port 13a is arranged rearward of the sensor 14. By doing so, the water sprayed and spouted from the second spout 13a is less likely to splash on the portion of the user's arm or body that should not be wetted.

Further, in the present embodiment, the tip C3 of the LED 15 is located rearward of the tip C1 of the sensor 14 in the detection direction A23 of the sensor 14 so that the light emitted from the LED 15 is less likely to be detected by the sensor 14. It is arranged. In other words, the tip C1 of the sensor 14 is arranged on the front side of the tip C3 of the LED 15.

Further, in the present embodiment, the tip C3 of the LED 15 is arranged in the second direction of the second water discharger 13 with respect to the detection direction A23 of the sensor 14 so that the sensor 14 is more difficult to detect the light emitted from the LED 15. The water discharge port 13a is disposed rearward of the tip C2. In other words, the tip C3 of the second water discharge port 13a of the second water discharger 13 is arranged on the front side of the tip C3 of the LED 15.

Further, in the present embodiment, the second water outlet 13a of the second water outlet 13 is disposed on the rear side of the first water outlet 12a of the first water outlet 12 and the first water outlet 12a. It is designed so that water dripping from the water does not reach the second spout 13a. In this case, the second water outlet 13a of the second water outlet 13 is configured so that the water sprayed from the second water outlet 13a does not reach the first water outlet 12a of the first water outlet 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 drainage port of the bowl 3 (not shown in FIG. 5).

Further, in the present embodiment, the first water discharger 12 and the second water discharger 13 are configured so that the water sprayed and discharged from the second water discharge outlet 13a of the second water discharger 13 is less likely to fall on the user. Employs orientation relationships. Specifically, the first water spouting portion 12 and the second water spouting portion 12 are arranged so that the water spouting direction A21 of the first water spouting portion 12 and the water spouting direction A22 of the second water spouting portion 13 are directed away from each other. Each of the 13 is provided. In other words, a line L11 extending in the vertical direction from the center of the first spout 12a of the first spout 12 (typically corresponding to the central axis of the first spout 12) and the second spout The first water spouting portion 13 does not intersect with the line L12 (typically corresponding to the central axis of the second water spouting portion 13) extending vertically from the center of the second water spouting portion 13a of the first water spouting portion 13. 12 and the 2nd water discharge 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. 6. FIG. 6 is a block diagram schematically showing a functional configuration of the automatic faucet device according to the embodiment of the present invention.

As shown in FIG. 6, in the automatic faucet device 1 according to the present embodiment, a common flow channel 21 is provided on the upstream side of both the first flow channel 17 and the second flow channel 18 (see FIG. 2, etc.) described above. It is connected. The common flow passage 21 is supplied with normal water such as general tap water (city water) (herein, this water is appropriately referred to as “normal water” in order to distinguish this water from electrolyzed water). To be done. On the common flow path 21, a water stop plug 22 for blocking the flow of the normal water in the common flow path 21, a filter 23 for removing foreign matters mixed in the normal water, and a flow rate on the secondary side in order from the upstream side. A constant flow valve 24 that keeps the constant flow rate is provided, and is branched 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 cutoff in the first flow path 17. When the first solenoid valve 25 is open, normal water flows through the first flow path 17, and the first water discharger 12 connected to the downstream end of the first flow path 17 discharges the water. Water is usually spouted.

On the other hand, the second flow passage 18 is provided with a second electromagnetic valve 28, a pressure regulating valve 29, a safety valve 30, a check valve 35, and an electrolytic cell 37 in this order from the upstream side. The second solenoid valve 28 switches between normal water flow and cutoff in the second flow path 18 by opening and closing. When the second solenoid valve 28 is open, normal water flows through the second flow path 18 and the second water discharger 13 connected to the downstream end of the second flow path 18 flows. Spray water is sprayed. The pressure regulating valve 29 is a valve that regulates 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 passage 18 becomes equal to or higher than a predetermined pressure (for example, when the pressure in the second flow passage 18 rapidly increases due to the second outlet 13a being blocked). Then, the water in the second flow path 18 is made to flow into 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 the reverse flow of water. When the electrolyzer 37 is energized, it normally electrolyzes water to produce electrolyzed water. A filter may be further provided on the downstream side of the electrolytic cell 37.

In addition, the automatic faucet device 1 further includes a controller 40 that controls the components within the automatic faucet device 1 (this controller 40 corresponds to the “control unit” in the present invention). The controller 40 operates by the electric power from the AC power source 39, and supplies the electric 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 controller 40 obtains a sensor signal indicating the detection state of the object to be detected by the sensor 14, and based on this sensor signal, controls to switch ON/OFF of the LED 15 and open/close the first solenoid valve 25. Is controlled, the control for switching the opening/closing of the second electromagnetic valve 28, and the control for switching execution/stop of the generation of electrolyzed water by the electrolyzer 37.

Here, the electrolyzed water produced by the electrolyzer 37 will be described.

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. In general, tap water or tap water contains chloride ions, and thus electrolysis produces free chlorine. Free chlorine exists as hypochlorous acid (HClO) in an acidic state, and in this form, the bactericidal power is about 10 times stronger than that of an existing form of alkaline hypochlorite (ClO − ). Moreover, even if it is neutral, a strong bactericidal power of about the middle level can be obtained. Therefore, the water electrolyzed in the continuous electrolysis tank is sterilized water having a strong sterilizing power.

As described above, commonly used tap water or tap water contains chloride ions, but when used in areas with low chloride ion concentrations or when strong bactericidal action is required, salt water is used. Chloride ions can be supplemented by adding chlorides such as.

As an electrode used for chlorine generation, a conductive base material carrying a chlorine generation catalyst or a conductive material composed of a chlorine generation catalyst is used. Depending on the type of catalyst for chlorine generation, 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-based electrodes, iridium-platinum-tantalum-based electrodes, and the like. A conductive base material carrying a chlorine generation catalyst is advantageous in terms of manufacturing cost because the base material part having a structure can be made of inexpensive materials such as titanium and stainless steel.

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

Examples of other electrolyzed water include silver ion water obtained by using silver as an electrode. It is said that the silver ion adsorbs to the enzyme on the cell membrane of the bacterium and inhibits the action of the enzyme, so that the bacterium cannot sustain life. It also acts to coat the surface of the base material that comes into contact with the bacteria, making it difficult for bacteria to propagate on the surface of the base material. Since silver ions coat the surface of the base material to prevent bacteria from adhering and have a bactericidal power, the growth of bacteria on the surface of the base material 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 slimyness and odor of the drainage port for a long period of time.

In addition, it is possible to use various kinds of electrolyzed water, such as ozone water that produces high concentration ozone as well as oxygen on the anode side, especially by using lead dioxide (β type) as an electrode for electrolysis. Is.

Furthermore, examples of the sterilized water other than the electrolyzed water include an aqueous solution in which various sterilized components are dissolved. As the disinfecting 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 using a gas sterilizing component, ozone water may be produced by dissolving ozone in the form of fine bubbles in water. When a solid sterilizing component is used, for example, sodium hypochlorite may be applied.

Here, in the present specification, the term “disinfection” means not only the meaning of reducing bacteria (in this case, meaning not only removing bacteria to reduce but also killing bacteria to reduce). It is used as a broad concept including the meaning of suppressing the growth of bacteria even if it is not reduced. The “functional water” in the present invention means water obtained by adding a sterilizing function in this sense to ordinary water by a predetermined treatment.
In addition, in the present embodiment, an example of using electrolyzed water as the functional water in the present invention will be described, but instead of electrolyzed water, sterilized water as described above other than electrolyzed water may be used. Needless to say.

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

(First embodiment)
First, the control performed by the controller 40 in the first embodiment of the present invention will be described.

FIG. 7 is a time chart showing basic control according to the first embodiment of the present invention. FIG. 7 shows, in order from the top, a sensor signal supplied from the sensor 14 to the controller 40, a drive signal supplied from the controller 40 to the second electromagnetic valve 28, and a drive signal supplied from the controller 40 to the first electromagnetic valve 25. The signals, the drive signal supplied from the controller 40 to the electrolytic cell 37, and the drive signal supplied from the controller 40 to the LED 15 are shown.
The sensor signal is turned on when the sensor 14 detects an object to be detected, and is turned off when the sensor 14 is not detecting an object to be detected (hereinafter, the sensor signal is on. A state in which the object is detected is called a "detection state", and a state in which the sensor signal is off and the sensor 14 is not detecting the object is called a "non-detection state"). The drive signal of the second solenoid valve 28 corresponds to the open/closed state of the second solenoid valve 28, and the drive signal of the first solenoid valve 25 corresponds to the open/closed state of the first solenoid valve 25. However, the drive signal of the electrolytic bath 37 corresponds to ON/OFF of the electrolytic bath 37 (in other words, the operating/non-operating state of the electrolytic bath 37), and the drive signal of the LED 15 corresponds to the ON/OFF state of the LED 15. To do.

First, at time t11, the sensor signal switches from OFF to ON, that is, the sensor 14 switches from the non-detection state to the detection state. At this time, the controller 40 energizes the first electromagnetic valve 25 to open the first electromagnetic valve 25, and causes the first water discharger 12 to normally spout water. This foam water discharge is water discharge for washing the user's hands and the like. In the following, the water spouting for such a purpose will be appropriately referred to as “water spouting for hand washing” (note that the water spouting is not only for the purpose of washing hands, but also for washing the face, storing water in the bowl 3, washing toothbrushes, etc. It is used for various purposes such as, but for the sake of convenience to distinguish it from the after-water discharge described later, the word "spray for hand-wash" is used to represent hand washing. Then, at time t12, the sensor signal switches from on to off, that is, the sensor 14 switches from the detection state to the non-detection state. At this time, the controller 40 stops energizing the first electromagnetic valve 25 and closes the first electromagnetic valve 25 to end the foam water discharge from the first water discharger 12, that is, the water discharge for hand washing. To finish.

After that, when the non-detection state of the sensor 14 continues for a predetermined time T1 from the time t12 when the foam spouting as the hand-washing spouting is finished, the controller 40 causes the second water spouting section 13 to perform spray spouting. This spray water discharge is performed in order to prevent the dirt flowing out by the hand washing using the above-mentioned water spout for hand washing from being difficult to be removed by drying and adhering to the bowl 3 of the hand washing device 5 or the like. (Hereinafter, water spouting for such a purpose is appropriately referred to as “after water spouting” as water spouting performed after hand-washing water spouting). That is, after a predetermined time T1 has passed after the hand-washing water discharge is finished, spray water-jetting is performed as after-water discharge to wash away the dirt caused by the hand-washing water discharge before it is dried and fixed. From this 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 t13 and irradiates the water discharge range R11 of the spray water discharged by the second water discharge part 13 with the light of the LED 15 (see FIG. 4). Notify the user that water will be discharged. Then, the controller 40 energizes the second solenoid valve 28 at a time t14 immediately after the time t13 (corresponding to a time after a predetermined time T1 has passed from the time t12 when the hand-washing water discharge is finished) to energize the second electromagnetic valve 28. The valve 28 is opened, and at time t15 immediately after this time t14, the electrolyzer 37 is energized to generate electrolyzed water in the electrolyzer 37, whereby electrolyzed water is sprayed and discharged from the second water discharger 13. That is, after-water discharge is performed. In this way, the energization of the electrolysis tank 37 is started after the energization of the second solenoid valve 28 is started without simultaneously energizing the second solenoid valve 28 and the electrolysis tank 37. Since a large amount of power is consumed at the timing of switching the second solenoid valve 28 from closed to open, the electrolysis tank 37 is not energized at this switching timing, and the electrolysis tank 37 is tried to be energized while the power is stable. It is a thing.

Thereafter, at time t16 when a predetermined time T3 (for example, 1.9 seconds) has passed from time t14 when the second electromagnetic valve 28 was opened, the controller 40 stops energizing the electrolysis tank 37 to cause the electrolysis tank 37 to operate. The production of electrolyzed water at 37 is terminated. At this time, since the second electromagnetic valve 28 is still open, the spray water is continuously discharged from the second water discharger 13. Then, at a time t17 after the time t16, specifically, at a time t17 when a predetermined time T2 (for example, 3.5 seconds) has elapsed from the time t14 when the second electromagnetic valve 28 was opened, the controller 40 causes the LED 15 to operate. Is turned off to terminate the irradiation of light from the LED 15, and the second solenoid valve 28 is closed by stopping the energization of the second solenoid valve 28, thereby spraying from the second water discharger 13. The water discharge is finished, that is, the after-water discharge is finished.

Here, it is preferable that the life (the number of years of life) of the electrolytic cell 37 is increased and the above-described control relating to after-water discharge is performed.

In one example, the controller 40 does not perform after-water discharge each time the hand-wash water is discharged, but performs after-water discharge every time the hand-wash water discharge is performed a predetermined number of times. Specifically, the controller 40 counts the number of times water is discharged for hand washing, does not perform after-water discharge while the number of times of counting has reached a predetermined number, and when the number of times of counting reaches a predetermined number of times. After-water discharge is performed, the number of times counted at this time is reset, and the number of times of hand-wash water discharge is counted again. In this case, the controller 40 applies electrolyzed water when performing after-water discharge.

In another example, the controller 40 performs after-water discharge every time the water for hand washing is discharged, but 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 as appropriate. In this case, the controller 40 applies electrolyzed water every time after-water discharge is performed a predetermined number of times. Specifically, the controller 40 counts the number of times after-water discharge is performed, and while the counted number does not reach the predetermined number of times, by not energizing the electrolytic cell 37, after-water discharge to which normal water is applied is performed. When the counted number of times has reached a predetermined number of times, the electrolytic cell 37 is energized to perform after-water discharge applying electrolytic water, and the number of times counted at this time is reset to perform the after-water discharge. Will be counted again.

In still another example, the controller 40 performs after-water discharge each time the hand-wash water is discharged, but performs the after-water discharge by changing the energization time of the electrolytic cell 37. That is, the controller 40 changes the concentration of 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 the usage frequency. Specifically, the controller 40 shortens the energization time of the electrolytic cell 37 as the learned usage frequency increases, in other words, the energization time of the electrolytic cell 37 increases as the learned usage frequency decreases.

In addition, although the control regarding after-water discharge performed in consideration of the life (durability years) of the electrolytic bath 37 has been described above, the control is not limited to such control, and the bowl 3 of the hand washing device 5 is cleaned. The after-water discharge control may be performed by giving priority to the maintenance. In this case, since the bowl 3 of the hand washing device 5 is soiled after the user has washed his/her hand, the controller 40 preferably performs after-water discharge by applying electrolyzed water every time the water for hand washing is discharged.

Next, with reference to FIG. 8, electrolyzed water is generated only in the initial period (the period indicated by T3 in FIG. 7) in the period after the after-water discharge (the period indicated by 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 passage 18 and the second water discharger 13 on the upstream side of the electrolytic cell 37, and shows the state of the water in the second flow passage 18 during the after-water discharge period. 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 to start energization of the electrolytic cell 37. At this time, the inside of the second flow path 18 is normally. Since it is filled with water, normal water is discharged from the second water discharge part 13 (see FIG. 8A). After this, the electrolyzed water generated in the electrolyzer 37 flows downstream in 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 reaching the second water discharger 13 (at this time, the inside of the second flow path 18 is filled with the electrolytic water), the electrolytic water starts to be discharged from the second water discharger 13 (FIG. 8). (See (C)). After that, the controller 40 stops the energization of the electrolytic bath 37 and stops the production of the electrolyzed water in the electrolytic bath 37 while keeping the second electromagnetic valve 28 open. Then, the normal water is supplied to the second flow path 18 and the electrolyzed water in the second flow path 18 is pushed out, whereby the electrolyzed water is discharged from the second water discharger 13 and the second flow is generated. The electrolyzed water in the passage 18 is gradually replaced with normal water (see FIG. 8D). Then, 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 discharger 13, that is, to end the after water discharge.

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

In one example, when the volume of the second flow passage 18 is 8 cc and the flow rate in the second flow passage 18 is 5 cc per second, the inside of the second flow passage 18 is normally filled with water. Since it takes 1.6 seconds, the controller 40 keeps the second electromagnetic valve 28 open for 1.6 seconds after stopping the energization of the electrolytic cell 37 to supply normal water to the second flow path 18. Supply. In this example, if the after-water discharge is to be performed for 3.5 seconds (corresponding to the predetermined time T2 shown in FIG. 7), the controller 40 sets the first 1.9 seconds (the predetermined time shown in FIG. 7). (Corresponding to T3), the electrolysis tank 37 is energized with the second solenoid valve 28 opened, and the second solenoid valve 28 is operated with the energization of the electrolysis tank 37 stopped for the subsequent 1.6 seconds. Keep it 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 above-mentioned example, 1.6 seconds is the minimum time required to fill the second flow path 18 with normal water after stopping the energization of the electrolytic cell 37. It is not limited to keep the second solenoid valve 28 open for 2 seconds to supply the normal water to the second flow path 18, but the second solenoid valve 28 may be opened for a time longer than 1.6 seconds. Alternatively, normal water may be supplied to the second flow path 18. This is equivalent to supplying normal water in an amount larger than the volume of the second flow passage 18 to the second flow passage 18. In such a case, the normal water will be discharged for a while after the electrolyzed water is discharged, and the discharged electrolyzed water can be flushed by the normal water into the bowl 3 or the like of the handwasher 5, and the water can be discharged to the bowl 3 or the plate. It is possible to suppress the influence of electrolyzed water.

In the above-mentioned example, in the after-water discharge, after the electrolytic water is discharged from the second water discharge part 13, the electricity supply to the electrolytic tank 37 is stopped and the electrolytic water is supplied to the second flow path 18. Although the water was stopped and the normal water was supplied to the second flow path 18, in another example, after discharging the electrolyzed water from the second water discharger 13, without stopping the energization of the electrolytic cell 37, It is also possible to reduce the energization power (meaning current or voltage) of the electrolytic cell 37 and supply electrolytic water having a low concentration to the second flow path 18, instead of normal water.
In this case, the controller 40 first applies the first energizing power to the electrolysis tank 37 to generate electrolysis water of the first concentration in the electrolysis tank 37, and to generate the electrolysis water of the first concentration. , Water is ejected from the second water discharger 13 through the second flow path 18, and then second energization power lower than the first energization power is applied to the electrolysis tank 37. A second concentration of electrolyzed water lower than the first concentration is generated, and the second concentration of electrolyzed water is supplied to the second flow path 18. For example, as the first concentration of electrolyzed water, the concentration of electrolyzed water having a sufficient disinfecting function is applied, and as the second concentration of electrolyzed water, the influence on the second flow path 18 is considerably small. A concentration of electrolyzed water (preferably, a concentration of electrolyzed water capable of sufficiently diluting the first concentration of electrolyzed water filled in the second flow path 18) is applied. Note that when the second energization power applied to the electrolytic cell 37 is set to 0, the energization to the electrolytic cell 37 is stopped and the second concentration becomes 0. Will be supplied to the channel 18.
According to such another example as well, after the electrolyzed water having the relatively high first concentration is discharged, the electrolyzed water having the relatively low second concentration is supplied to the second flow path 18, so that the second concentration is increased. With the electrolyzed water, the concentration of electrolyzed water in the second flow path 18 can be reduced, and corrosion (deterioration) of the second flow path 18 and the like due to electrolyzed water can be suppressed.

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

FIG. 9 is a time chart showing a first control example according to the first embodiment of the present invention. FIG. 9 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 solenoid valve 28, and the drive signal supplied from the controller 40 to the first solenoid valve 25. Shows the signal.
Here, description of the same control as the basic control described above will be appropriately omitted. Specifically, the control from the time t21 to the time t22 and the control after the time t24 are the same as the basic control, so the description thereof will be omitted and only the control from the time t22 to the time t24 will be described.

In the basic control described above, the after-water discharge is executed when the predetermined time T1 has elapsed after the hand-wash water discharge was executed, but in the first control example, the predetermined time T1 is executed after the hand-wash water discharge is executed. The present invention relates to the control performed when the sensor 14 switches from the non-detection state to the detection state before the time elapses. Specifically, in the first control example, the controller 14 switches from the non-detection state to the detection state at a time t23 before the predetermined time T1 elapses after the time t22 at which the water for hand washing is finished, so that the controller 40 energizes the 1st solenoid valve 25, opens the 1st solenoid valve 25, and makes the 1st water discharge part 12 spout water. In this case, the controller 40 maintains the first solenoid valve 25 in the open state from the time t23 to the time t24 when the detection state of the sensor 14 continues, and causes the first water discharger 12 to perform the foam water discharge. That is, sprinkle water for hand washing.

As described above, in the first control example, when the sensor 14 is in the detection state within the period after the spouting water for hand washing and before the spouting after-water is performed, the spray spouting by the second spouting part 13 is not performed. , The first water spouting section 12 performs foam water spouting. By doing this, when the sensor 14 temporarily switches from the non-detection state to the detection state after the hand-washing water is discharged (for example, the user temporarily moves his/her hand to the outside of the detection range of the sensor 14 during the hand-washing). In this case, the water for hand washing is restarted without starting the after-water discharge. In other words, the user can restart 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 first 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 solenoid valve 28, and the drive signal supplied from the controller 40 to the first solenoid valve 25. The signal is shown.
Here, description of the same control as the above-described basic control will be appropriately omitted. Specifically, the control from the time t31 to the time t33 and the control after the time t35 are the same as the basic control, so the description thereof will be omitted and only the control from the time t34 to the time t35 will be described.

The second control example relates to control performed when the sensor 14 switches from the non-detection state to the detection state during execution of after-water discharge. Specifically, in the second control example, the controller 40 switches the non-detection state to the detection state at time t34 during execution of after-water discharge, whereby the controller 40 energizes the second solenoid valve 28. Stop and close the second solenoid valve 28 (if the electrolysis tank 37 is energized, the electrolysis tank 37 is also stopped energization), and stop spraying water discharge from the second water discharge unit 13, The first electromagnetic valve 25 is energized to open the first electromagnetic valve 25, and foam water is discharged from the first water discharger 12. That is, the controller 40 ends the after-water discharge and starts the hand-wash water discharge. In this case, the controller 40 maintains the first electromagnetic valve 25 in the open state from the time t34 to the time t35 when the detection state of the sensor 14 continues, and causes the first water discharger 12 to perform the foam water discharge. .. Then, the controller 40 energizes the second solenoid valve 28 at a time t36 when the non-detection state of the sensor 14 continues for a predetermined time T1 after the time t35 when the hand-washing water discharge is finished, and the second solenoid valve 28 is energized. The valve 28 is opened to perform spray water discharge by the second water discharge unit 13, that is, restart after-water discharge.

As described above, in the second control example, when the sensor 14 is in the detection state during execution of 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. Do, that is, stop after-water discharge and perform hand-wash water discharge. By doing so, the user can wash the hands without waiting for the end of after-water discharge. Also, if electrolyzed water gets into the user's hands, it may cause skin roughness depending on the concentration of electrolyzed water, or may leave an odor specific to electrolyzed water (chlorine odor, etc.). By stopping the after-water discharge when the sensor 14 is in the detection state during the execution of (1), it is possible to prevent such a problem that may occur when the electrolyzed water falls on the user's hand.

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

In the basic control described above, 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 solenoid 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, and after stopping the energization of the electrolytic cell 37. The energization of the second solenoid valve 28 is stopped. Specifically, the controller 40 energizes the second solenoid valve 28 at time t41, energizes the electrolysis tank 37 at time t42 immediately thereafter, and then stops energization of the electrolysis tank 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 the energization of the electrolytic bath 37 and the second electromagnetic valve 28 in such a procedure when the sensor 14 is in the detection state during the execution of after-water discharge generating electrolytic water. ..

In this way, the energization of the second solenoid valve 28 is stopped after the energization of the electrolysis cell 37 without stopping the energization of the second solenoid valve 28 and the energization of the electrolysis cell 37 at the same time. Since a large amount of electric power is consumed at the timing of switching the second electromagnetic valve 28 from open to closed, it is possible to stop the energization of the electrolytic cell 37 at the timing of this switching so that the electric power is stable while the electric power is stable. It is intended to operate the second solenoid valve 28. Note that a large amount of power is consumed during the period in which both the second electromagnetic valve 28 and the electrolytic cell 37 are energized (the period from time t42 to time t43), so the second electromagnetic valve 28 is supplied with power. The electric power to be applied may be appropriately thinned, and specifically, the energization of the second solenoid valve 28 may be temporarily stopped. After the second solenoid valve 28 is once opened, even if the power supply to the second solenoid valve 28 is temporarily stopped, the second solenoid valve 28 is hardly closed and the second solenoid valve 28 is not closed. This is because it is possible to maintain the substantially open valve state of 28.

Next, a control flow performed by the controller 40 in the first embodiment of the present invention will be described with reference to FIGS. 12 and 13. FIG. 12 is a flow chart showing a control flow relating to water spouting for hand washing according to the first embodiment of the present invention, and FIG. 13 is for after-water spouting according to the first embodiment of the present invention performed after the flow chart shown in FIG. It is a flowchart which shows the control flow which concerns. Note that the control flows shown in FIGS. 12 and 13 apply 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 spout for hand washing according to the first 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 switched from OFF to ON, that is, whether or not the sensor 14 has 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 repeats the determination of step S11 until the sensor signal switches 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, the controller 40 energizes the first solenoid valve 25 to open the first solenoid valve 25, Regular water is spouted from the first water spouting section 12, that is, hand spouting is performed.

Next, in step S13, the controller 40 determines whether or not the sensor signal from the sensor 14 has switched from on to off, that is, whether or not the sensor 14 has switched from a detection state to a non-detection state. As a result, when the sensor signal is not switched from on to off (step S13: No), the determination in step S13 is performed again. That is, the controller 40 repeats the determination of step S13 until the sensor signal switches from on to off. In this case, the controller 40 continues to energize the first solenoid valve 25 and maintains the valve open state of the first solenoid valve 25, thereby continuously performing the water discharge for hand washing.

On the other hand, when the sensor signal is switched from on to off (step S13: Yes), the process proceeds to step S14, where the controller 40 stops energizing the first solenoid valve 25 and closes the first solenoid valve 25. The valve is closed to end the foam water discharge from the first water discharge part 12, that is, the hand wash water discharge is ended. Then, the process proceeds to step S20 shown in FIG.

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

First, in step S20, the controller 40 determines whether the sensor signal from the sensor 14 is off, that is, whether the sensor 14 is in the 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 S12 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, causes the first water spouting section 12 to spout normal water in a foamed state, and then wash it by hand. Repeat the water discharge.

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 the end of the hand washing water discharge. It is determined whether or not. As a result, when 3 seconds have not elapsed since the end of the hand washing water discharge (step S21: No), the process returns to step S20, and the determinations in steps S20 and S21 are performed again. In this case, the controller 40 waits for 3 seconds while determining whether or not the sensor signal is off.

On the other hand, when 3 seconds have passed 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 after that, in step S23, the controller 40 energizes the second electromagnetic valve 28 to open the second electromagnetic valve 28, and immediately after that, in step S24, the controller 40 energizes the electrolytic cell 37. Then, electrolyzed water is generated in the electrolytic bath 37. By doing so, the controller 40 sprays the electrolytic water from the second water discharger 13, that is, performs after-water discharge.
Strictly speaking, the controller 40 passes 3 seconds after ending the hand-washing water discharge so that the second electromagnetic valve 28 opens at the time point 3 seconds after ending the hand-washing water discharge. The LED 15 is turned on at a previous time, that is, when a predetermined time of less than 3 seconds has elapsed after the end of the hand washing water discharge.

Next, in step S25, the controller 40 determines whether the sensor signal from the sensor 14 is off, that is, whether the sensor 14 is in the non-detection state. As a result, if the sensor signal is not off (step S25: No), that is, if the sensor signal is switched from off to on, the process proceeds to step S26. In this case, in step S26, the controller 40 stops the energization of the electrolytic bath 37 and ends the generation of electrolyzed water in the electrolytic bath 37. Immediately thereafter, in step S27, the controller 40 turns off the LED 15, stops energizing the second electromagnetic valve 28, and closes the second electromagnetic valve 28. By doing so, the controller 40 ends the spray water discharge from the second water discharge part 13, that is, the after-water discharge. After that, the process returns to step S12 shown in FIG. 12, and the controller 40 energizes the first electromagnetic valve 25 to open the first electromagnetic valve 25 as described above, and Use normal water as a foam spout, and repeat the spout for hand washing.

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

On the other hand, when 1.9 seconds have passed since the after-water discharge was started (step S28: Yes), the process proceeds to step S29, where the controller 40 stops energizing the electrolytic cell 37 and electrolyzes the electrolytic cell 37. The generation of water is completed.

Next, in step S30, the controller 40 determines whether the sensor signal from the sensor 14 is off, that is, whether the sensor 14 is in the non-detection state. As a result, when the sensor signal is not off (step S30: No), that is, when 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 energizing the second solenoid valve 28, and closes the second solenoid valve 28. By doing so, the controller 40 ends the spray water discharge from the second water discharge part 13, that is, the after-water discharge. After that, the process returns to step S12 shown in FIG. 12, and the controller 40 energizes the first electromagnetic valve 25 to open the first electromagnetic valve 25 as described above, and Use normal water as a foam spout, and repeat the spout for hand washing.

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 after-water discharge (corresponding to the predetermined time T2 shown in FIG. 7). It is determined whether or not it has passed. As a result, when 3.5 seconds have not elapsed after the after-water discharge is started (step S31: No), the process returns to step S30, and the determinations in 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 passed since the after-water discharge was started (step S31: Yes), the controller 40 turns off the LED 15 and energizes the second solenoid valve 28 in step S32. After stopping, the second solenoid valve 28 is closed. By doing so, the controller 40 ends the spray water discharge from the second water discharge part 13, that is, the after-water discharge.

(Operation and effect of the first embodiment)
Next, operation effects of the automatic faucet device according to the first embodiment of the present invention will be described.

According to the first embodiment, the water for hand washing is discharged when the sensor 14 is in the detection state, and when the sensor 14 is in the non-detection state, the water discharge for hand washing is finished and the after-water discharge is performed (FIG. 7). If there is a possibility that the dirt flowing out by the hand washing using the water spout for hand washing may be dried and adhered to the bowl 3 or the like of the hand washing device 5, the after-water spouting can be appropriately performed, which is wasteful. While suppressing water discharge, it is possible to prevent such dirt from adhering to the bowl 3 or the like of the hand washing device 5 by drying. Therefore, the bowl 3 and the like of the hand washing device 5 can be kept clean. In particular, according to the first embodiment, after-water discharge is performed using electrolyzed water, so that the bowl 3 and the like of the handwasher 5 can be effectively kept clean.

Further, the water (dirty water) flowing out by the hand washing using the hand washing spout tends to fall in a range wider than the spouting range of the hand washing spout, but according to the first embodiment, the foam spouting used in the hand washing spout Since after-water discharge is performed by using spray water discharge having a wider water discharge angle than the water discharge port, it is possible to discharge water in a wide range with a small flow rate, while effectively suppressing wasteful water discharge, and of the handwasher 5 of the handwasher 5. The bowl 3 and the like can be effectively kept clean. In this case, it is difficult for the user to predict the spouting/spouting range R11 of the sprayed water, but according to the first embodiment, the LED 15 irradiates a range R12 that is substantially the same as the spouting/spouting range R11 (FIG. 4). It is possible to appropriately notify the user of the water discharge range R11 of the spray water, and it is possible to prevent the user from landing on an undesired location. In particular, according to the first embodiment, before the spray spouting is started, the user is informed beforehand of the spouting range R11 of the spray spouting water by the light from the LED 15 (see FIG. 7), so that the user does not want to do this. It is possible to effectively prevent the water from landing on.

Further, according to the first embodiment, after the water spout for hand washing is finished, after the water spouting is performed when the non-detection state of the sensor 14 continues for a predetermined time (see FIG. 7 ), the end of the water spout for hand washing and thereafter The user can be notified of the start of after-water discharge. When electrolyzed water from after-water discharge is applied to the user's hand, the skin may become rough depending on the concentration of electrolyzed water, or the odor (chlorine odor, etc.) peculiar to electrolyzed water may remain. By thus notifying the user of the start of after-water discharge, it is possible to appropriately prevent the problem that may occur due to the electrolytic water falling on the user's hand.

Further, according to the first embodiment, when the sensor 14 is in the detection state after the water discharge for hand washing and before the after water discharge, the foam water discharge is performed without performing the spray water discharge (see FIG. 9 ). When the sensor switches from the temporary non-detection state to the detection state after spouting water for hand washing (for example, when the user temporarily moves his/her hand out of the detection range of the sensor 14 during hand washing), after-sales It is possible to properly restart the water spout for hand washing without starting the water spout. That is, the user can restart the hand washing without waiting for the end of after-water discharge.

Further, according to the first embodiment, when the sensor 14 is in the detection state during after-water discharge, spray water discharge is stopped and foam water discharge is performed, that is, after water discharge is stopped and hand-wash water discharge is performed. (See FIG. 10), the user can wash the hands without waiting until the after-water discharge is finished, and the above-described problem that may occur due to the electrolytic water getting on the user's hand can be prevented. ..

Further, according to the first embodiment, when the after-water discharge is started, the energization of the electrolysis tank 37 is started after the energization of the second electromagnetic valve 28 is started, and the electrolysis tank 37 is supplied with the electric power in a stable state. When the energization is started and the after-water discharge is finished, the energization of the second electromagnetic valve 28 is stopped after the energization of the electrolytic cell 37 is stopped, and the second electromagnetic valve 28 is turned on in the state where the electric power is stable. Since the operation is performed from the open state to the closed state (see FIG. 11), it is possible to appropriately deal with a power source having a small capacity, and it is possible to downsize the device.

In addition, according to the first embodiment, after-water spouting is not performed every time hand-washing water spouting is performed, after-water spouting is performed every time a predetermined number of hand-washing water spouts are performed, and the usage frequency of the automatic faucet device 1 is learned. By adjusting the energization time of the electrolytic cell 37 based on the frequency of use, it is possible to reduce the load applied to the electrolytic cell 37 and prolong the service life (years of durability) of the electrolytic cell 37.

Further, according to the first embodiment, in the after-water discharge, after the electrolytic water is discharged from the second water discharge part 13, the energization of the electrolytic cell 37 is stopped and the electrolytic water to the second flow path 18 is discharged. Since the supply is stopped and the normal water is supplied to the second flow path 18 (see FIGS. 7 and 8 ), the supplied normal water discharges the electrolyzed water in the second flow path 18 to generate the normal water. By replacing, the concentration of 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. The inside of the second flow path 18 can be normally filled with water). As a result, it is possible to suppress corrosion (deterioration) of the second flow path 18 and the like due to the electrolytic water staying in the second flow path 18. Here, a method of adjusting the concentration of electrolyzed water in order to suppress the corrosion of the second flow path 18 and the like is conceivable, but in that case, it is necessary to adjust the electrolyzed water to a concentration such that corrosion is suppressed However, according to the first embodiment, since normal water is supplied to the second flow path 18 as described above, electrolytic water of various concentrations can be supplied without considering the corrosion of the second flow path 18 and the like. Can be applied.

On the other hand, according to the first embodiment, the sensor 14 is arranged so that the detection direction A23 of the sensor 14 faces away from the water discharge direction A22 of the second water discharge part 13, so in other words, The sensor 14 is arranged so that the line L13 along the detection direction A23 of the sensor 14 does not intersect with 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 discharge range R11 of the second water discharge part 13 intersects at the part where the detection accuracy is considerably low in the pointing range R13 of the sensor 14 (that is, the part of the pointing range R13 that is far from the sensor 14). Therefore, it is possible to appropriately suppress erroneous water discharge caused by the sensor 14 detecting the water sprayed and discharged from the second water discharge port 13a.

Further, according to the first embodiment, the sensor 14 is arranged on the front side of the second water discharge port 13a of the second water discharge unit 13 (see FIG. 2B). Compared with the case where the sensor 14 is provided on the rear side of the second water discharge port 13a of the portion 13, the user does not have to forcibly extend the hand to the rear side because the sensor 14 detects the hand. .. In addition, since the second water discharge port 13a is provided on the rear side of the sensor 14 (see FIG. 2(B)), the second water discharge portion 13 of the second water discharge unit 13 is provided on the front side of the sensor 14. Compared with the case where the water outlet 13a is provided, the water sprayed and spouted from the second water outlet 13a of the second water discharger 13 is less likely to splash on the portion of the user's arm or body that should not be wetted.

Further, according to the first embodiment, the tip C3 of the LED 15 is arranged on the rear side of the tip C1 of the sensor 14. In other words, the tip C1 of the sensor 14 is arranged in front of the tip C3 of the LED 15. Therefore, the distance to the portion where the detection range of the sensor 14 and the irradiation range from the LED 15 overlap becomes longer than in the case where the tip C3 of the LED 15 is arranged in front of the tip C1 of the sensor 14. Since the irradiation intensity of light is attenuated according to the distance, the irradiation intensity becomes low in the portion where the detection range of the sensor 14 and the irradiation range from the LED 15 overlap. Therefore, it is possible to appropriately irradiate the water spouted from the water spout 13a of the second water spout portion 13 with the light from the LED 15, and to dispose the tip C3 of the LED 15 in front of the tip C1 of the sensor 14. In comparison, erroneous water discharge due to the sensor detecting the light emitted from the LED 15 can be effectively suppressed.

Further, according to the first embodiment, the tip C3 of the LED 15 is arranged on the rear side of the tip C2 of the water discharge port 13a of the second water discharge part 13. In other words, the tip C2 of the water outlet 13a of the second water discharger 13 is arranged on the front side of the tip C3 of the LED 15. According to this, since the light emitted from the LED 15 has a greater effect on the sensor 14 than the water discharged from the water outlet 13a of the second water outlet 13, the tip of the water outlet 13a of the second water outlet 13 is larger. Compared with the case where the tip C3 of the LED 15 is arranged in front of C2, it is possible to more effectively suppress erroneous water discharge due to the sensor 14 detecting the light emitted from the LED 15.

Further, according to the first embodiment, the first water outlet 12a of the first water outlet 12, the second water outlet 13a of the second water outlet 13, and the sensor 14 are provided at the tip end of the automatic unit. In the faucet device 1, since the first spout 12a is arranged between the sensor 14 and the second spout 13a (see FIG. 2B), the sensor 14 and the second spout 13a. And can be separated from each other, and erroneous water discharge due to the sensor 14 detecting the water sprayed and discharged from the second water discharge port 13a can be suppressed. In particular, according to the first embodiment, the LED 15 is further arranged between the first spout 12a and the second spout 13a (see FIG. 2B), so the sensor 14 and the second The water discharge port 13a can be further separated, and the above-mentioned erroneous water discharge can be effectively suppressed. In addition, since the LED 15 is arranged in the vicinity of the second water discharge port 13a, it is possible to appropriately irradiate the water discharge range R11 of the second water discharge unit 13 with the light from the LED 15.

Further, according to the first embodiment, the first water discharger 12 and the water discharge direction A21 of the first water discharger 12 and the water discharge direction A22 of the second water discharger 13 are oriented so as to be away from each other. Since each of the 2nd water discharge parts 13 is arrange|positioned, in other words, the line L11 extended in the vertical direction from the center of the 1st water outlet 12a, and the line extended in the vertical direction from the center of the 2nd water outlet 13a. Since each of the first water discharger 12 and the second water discharger 13 is arranged so as not to intersect L12 on the front side (see FIG. 5), the second water discharger 13 faces downward. Thus, the spray water can be sprayed, and it is possible to appropriately prevent the water sprayed and sprayed from the second water discharger 13 from splashing on the user.

Further, according to the first embodiment, since the second water outlet 13a is arranged on the rear side of the first water outlet 12a (see FIG. 2B), the first water outlet 12a It is possible to properly prevent the water from dripping on the second water discharge port 13a. In this case, according to the first embodiment, by applying the orientation of the second water discharger 13 that takes the position of the first water discharge outlet 12a into consideration, the water sprayed and discharged from the second water discharge outlet 13a is applied. It is possible to appropriately prevent the water from getting on the first spout 12a.

(Second embodiment)
Next, the control performed by the controller 40 in the second embodiment of the present invention will be described. In the above-described first embodiment, only the foam spouting from the first water spouting part 12 is performed in the hand spouting water, but in the second embodiment, the foaming spout from the first water spouting part 12 is performed in the hand washing spout. Not only water spouting but also spray water spouting from the second water spouting portion 13 is performed. Specifically, in the second embodiment, in the water spouting for hand washing, the controller 40 first performs spray water spouting from the second water spouting part 13 for a predetermined time, and then performs foam water spouting from the first water spouting part 12. To do.

In addition, below, about the control similar to 1st Embodiment mentioned above, those description is abbreviate|omitted suitably and only the control different from 1st Embodiment is demonstrated. That is, the control not particularly described here is the same as that in the first embodiment.

FIG. 14 is a time chart showing basic control according to the second embodiment of the present invention. FIG. 14 shows, in order from the top, a sensor signal supplied from the sensor 14 to the controller 40, a drive signal supplied from the controller 40 to the second solenoid valve 28, and a drive signal supplied from the controller 40 to the first solenoid valve 25. The signals, the drive signal supplied from the controller 40 to the electrolytic cell 37, and the drive signal supplied from the controller 40 to the LED 15 are shown.
Here, the control after time t54 is the same as the basic control according to the first embodiment, so the description thereof will be omitted and only the control from time t51 to time t54 will be described.

First, at time t51, the sensor signal switches from off to on, that is, the sensor 14 switches 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 causes the second water discharger 13 to spray water. In this case, the controller 40 sprays normal water from the second water discharger 13 without turning on the LED 15 and without energizing the electrolytic bath 37, that is, without generating electrolytic water in the electrolytic bath 37. Let The controller 40 applies such spray water discharge as water discharge performed initially in water discharge for hand washing. Then, the controller 40 stops energizing the second solenoid valve 28 at time t52 when a predetermined time T5 (for example, 3 seconds) has elapsed from the time t51 when the spray water discharge from the second water discharge part 13 was started. By closing the second electromagnetic valve 28, the spray water discharge from the second water discharger 13 is completed.

Then, at a time t53 when a certain time (for example, 0.5 seconds) has passed from the time t52 at which the spray water discharge from the second water discharger 13 is finished, the controller 40 energizes the first solenoid valve 25 to make the first time. The solenoid valve 25 of No. 1 is opened, and normal water is spouted from the first water spouting section 12. The controller 40 applies such foam spouting as spouting performed after spraying spouting in hand-washing spouting. Thereafter, at time t54, the sensor signal switches from on to off, that is, the sensor 14 switches from the detection state to the non-detection state. At this time, the controller 40 stops energizing the first electromagnetic valve 25 and closes the first electromagnetic valve 25, and ends the foam water discharge from the first water discharger 12. By doing this, the hand-washing water discharge is completed. After that, the controller 40 performs after-water discharge in the same procedure as in the first embodiment.

It should be noted that it is preferable that the predetermined time T5 for spraying water in the hand-washing water can be adjusted. Specifically, the automatic faucet device 1 is provided with an adjusting unit such as a switch, and the environment in which the automatic faucet device 1 is used (characteristics of the user of the automatic faucet device 1, installation location of the automatic faucet device 1, etc.) Accordingly, it is preferable that the administrator or the like can adjust the predetermined time T5 by using the adjustment unit.

Next, with reference to FIG. 15, a control flow performed by the controller 40 in the second embodiment of the present invention will be described. FIG. 15 is a flowchart showing a control flow for hand-washing water discharge according to the second embodiment of the present invention.
Note that, even after the control flow related to the water discharge for hand washing according to the second embodiment ends, the control flow related to the after-water discharge shown in FIG. 13 described above is executed in the same manner.

First, in step S41, the controller 40 determines whether or not the sensor signal from the sensor 14 has switched from off to on, that is, whether or not the sensor 14 has switched from a non-detection state to a detection state. As a result, when the sensor signal is not switched from off to on (step S41: No), the determination in step S41 is performed again. That is, the controller 40 repeats the determination of step S41 until the sensor signal switches from off to on.

On the other hand, when the sensor signal is switched from off to on (step S41: Yes), the controller 40 energizes the second solenoid valve 28 to open the second solenoid valve 28, and proceeds to step S42. Spray water is ejected from the second water discharger 13. By doing this, spouting water for hand washing is started.

Next, in step S43, the controller 40 determines whether or not 3 seconds (corresponding to the predetermined time T5 shown in FIG. 14) have elapsed since the start of spray water discharge as water discharge for hand washing. As a result, when 3 seconds have not elapsed since the start of spray water discharge (step S43: Yes), the process proceeds to step S44, 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 S44: Yes), the process proceeds to step S45, where the controller 40 closes the second solenoid valve 28 by stopping the energization of the second solenoid valve 28. The valve is closed, and the spray water discharge from the second water discharge unit 13 is completed. As a result, the hand-washing water discharge is completed. Then, 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 S44: No), the process returns to step S43, and the determinations in steps S43 and S44 are performed again. That is, the controller 40 waits for 3 seconds while determining whether or not the sensor signal is switched from on to off. In this case, the controller 40 continues to energize 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. To do.

On the other hand, when 3 seconds have elapsed since the spray water discharge was started (step S43: No), the process proceeds to step S46, where the controller 40 stops energizing the second solenoid valve 28 and stops the second solenoid valve 28. Is closed and the spray water discharge from the second water discharge part 13 is completed.

Next, in step S47, 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 water discharge after a predetermined time (for example, 0.5 seconds) has elapsed after the spray water discharge is completed.

Next, in step S48, the controller 40 determines whether or not the sensor signal from the sensor 14 has switched from on to off, that is, whether or not the sensor 14 has switched from a detection state to a non-detection state. As a result, when the sensor signal is not switched from on to off (step S48: No), the determination in step S48 is performed again. That is, the controller 40 repeats the determination of step S48 until the sensor signal switches from on to off. In this case, the controller 40 continues to energize the first solenoid valve 25 and maintains the open state of the first solenoid valve 25 to continue the foam water discharge from the first water discharge unit 12. To do.

On the other hand, when the sensor signal is switched from on to off (step S48: Yes), the process proceeds to step S49, where the controller 40 stops energizing the first solenoid valve 25 and closes the first solenoid valve 25. The valve is closed, and the foam water discharge from the first water discharge unit 12 is completed. As a result, the hand-washing water discharge is completed. Then, the process proceeds to step S20 shown in FIG.

When executing the control flow according to the second embodiment, when the determination in step S20 shown in FIG. 13 described above is “No” and after the control in step S27 is performed, step S47 shown in FIG. 15 is performed. Shall return to. Specifically, also in the second embodiment, when the sensor 14 is in the detection state within a period after performing the water discharge for hand washing and before performing the after-water discharge, the spray water discharge by the second water discharge unit 13 is performed. Instead, the first water discharger 12 performs the foam water discharge, and when the sensor 14 is in the detection state during the after-water discharge, the second water discharger 13 stops the spray water discharge and the first water discharge. Foam water is discharged by the part 12.

(Operation and effect of the second embodiment)
Next, the function and effect of the automatic faucet device according to the second embodiment of the present invention will be described. Here, only the operation and effect different from the above-described first embodiment will be described.

According to the second embodiment, while the sensor 14 is detecting the object to be detected, the spray water discharge is first performed from the second water discharge part 13, and a predetermined time T5 (for example, 3 seconds) after the spray water discharge is started. ) Has elapsed, the spray spouting is stopped and the foam spouting is performed from the first water spouting part 12. Therefore, first, the hand spouting can be efficiently performed by using the spray spouting with a small flow rate but a high flow rate, After that, not only hand washing but also face washing and water storage can be efficiently performed by using the foam spout having a large flow rate. Therefore, it is possible to save water appropriately while ensuring the convenience of the user. In particular, according to the second embodiment, since the foam spouting is automatically switched after the spray spouting, when an operation other than hand washing (such as face washing or water storage) is performed, or a relatively long time such as hand washing with soap is required. High convenience is secured because the user automatically switches to the foam spouting without any special operation or awareness of the user when performing an operation.

Further, according to the second embodiment, after a certain time (for example, 0.5 seconds) after stopping the spray water discharge from the second water discharge portion 13, the foam water discharge from the first water discharge portion 12 is performed. That is, since the water is temporarily stopped between the spray water discharge and the foam water discharge, it is possible to notify the user of the end of the spray water discharge. As a result, the user can be given an opportunity to stop hand washing and the like, and it becomes possible to save water effectively.

Moreover, according to 2nd Embodiment, since it was comprised so that the predetermined time T5 which sprays water may be changed in the water discharge for hand washing, according to the use environment of the automatic faucet apparatus 1, a user's convenience and water saving. Depending on which is given priority, the predetermined time T5 for spraying water can be adjusted appropriately. For example, in an environment in which dirt that is hard to remove adheres to the hands and requires relatively long hand washing, the predetermined time T5 for spraying water may be shortened to give priority to the convenience of the user over water saving. it can.

Further, according to the second embodiment, the sensor 14 does not detect the detected object, and the sensor 14 detects the detected object until a predetermined time T1 (for example, 3 seconds) elapses after stopping the hand washing water discharge. When the water is detected, the spray water is not sprayed again from the second water discharger 13, but the foam water is discharged from the first water discharger 12, so that the convenience for the user can be appropriately secured. .. For example, when the user tries to draw water with his/her hand or wash his/her hand with soap after the user temporarily moves his/her hand to the outside of the detection range of the sensor 14 during hand washing, it is not a spray spout but foam. Since water is discharged, the convenience for the user can be secured.

(Third Embodiment)
Next, a third embodiment of the present invention will be described. In the above-described first embodiment and second embodiment, two water discharge portions (first water discharge portion 12 and second water discharge portion 12 and second flow path 18) are used. From the water discharger 13) of the above, the water discharge (foam water discharge and spray water discharge) is performed in two types. However, in the third embodiment, only one flow path and one water discharger are used, and Perform both after-water discharge. Specifically, in the third embodiment, only the water spouting unit capable of spraying water is used, and both the hand-washing water spout and the after-water spouting are performed by the spray water spout.

With reference to FIG. 17, the structure of an automatic faucet device that performs both hand-washing water discharge and after-water discharge only by spraying water will be described. 17(A) is a perspective view of an automatic faucet device according to a third embodiment of the present invention as seen obliquely from below, and FIG. 17(B) is a sectional view of the automatic faucet device of FIG. 17(A). Is.
In addition, below, the same code|symbol is attached about the same component as the component (refer FIG. 2) of the automatic faucet apparatus 1 by the above-mentioned embodiment, and those description shall be abbreviate|omitted suitably. That is, the constituent elements not particularly described here are similar to those of the automatic faucet device 1.

As shown in FIGS. 17A and 17B, the automatic faucet device 1b according to the third embodiment does not include the first water discharger 12 and the first flow passage 17 for performing foam water discharge. The configuration is different from the automatic faucet device 1 according to the above-described embodiment in that only the second water discharger 13 and the second flow path 18 for performing spray water discharge are provided. Other configurations are almost the same as the automatic faucet device 1 according to the embodiment. Specifically, the automatic water faucet device 1b according to the fifth modification also has a sensor 14 for detecting an object to be detected and an LED 15 for irradiating light, similarly to the automatic water faucet device 1 according to the embodiment.
In addition, in the automatic faucet device 1b according to the modified example 5, the phrase "second" is attached to the "second water discharge part 13" and the "second flow path 18", which means "first". It is not based on the premise that the water spouting portion and the flow passage are present, but is because it has the same configuration as the second water spouting portion 13 and the second flow passage 18 of the automatic faucet device 1 according to the above-described embodiment. ..

Next, with reference to FIG. 18, a positional relationship between the second water discharger 13, the sensor 14, and the LED 15 according to the third embodiment will be described. FIG. 18 is a sectional view of the automatic faucet device 1b according to the third embodiment, similar to FIG. 17(B).

As shown in FIG. 18, in the third embodiment, as in the first and second embodiments, the sensor 14 detects water sprayed and spouted from the second spout 13a of the second spout unit 13. The orientation relationship between the sensor 14 and the second water discharger 13 that makes it difficult to perform is adopted. Specifically, the detection accuracy of the sensor 14 decreases as the distance from the sensor 14 increases. Therefore, the directional range R13 (the range including the detection range of the sensor 14) corresponding to the detection direction A23 related to the detection of the object to be detected by the sensor 14 is detected. (Specifically, it corresponds to a range in which the detection range is extended to the front), but the sensor 14 and the second water discharger 13 are arranged so as to intersect with the water discharge range R11 of the second water discharger 13 at a distant position on the front side. The orientation relationship with is adopted. Specifically, the sensor 14 is arranged 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, the 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 outlet 13a of the second water outlet 13. The sensor 14 is arranged so as not to intersect the line L12 (typically corresponding to the central axis of the second water discharger 13) on the front side.

Further, in the third embodiment, similarly to the first embodiment and the second embodiment, the sensor 14 is provided so that the hand can be properly detected by the sensor 14 even if the person does not reach the back so much. The second water discharger 13 is arranged in front of the second water discharge port 13a. In other words, the second water discharge port 13a is arranged rearward of the sensor 14. By doing so, the water sprayed and spouted from the second spout 13a is less likely to splash on the portion of the user's arm or body that should not be wetted.

Further, in the third embodiment, similarly to the first and second embodiments, the sensor 14 becomes more difficult to detect the water spray-sprayed from the second water outlet 13a of the second water discharger 13. In addition, the tip C5 of the sensor 14 is disposed rearward of the tip C4 of the water discharge port 13a of the second water discharger 13 in the detection direction A23 of the sensor 14. In other words, the tip C4 of the water outlet 13a of the second water discharger 13 is arranged on the front side of the tip C5 of the sensor 14. According to this, as compared with the case where the tip C5 of the sensor 14 is disposed on the front side of the tip C4 of the water discharge port 13a of the second water discharge part 13 in the detection direction A23 of the sensor 14, It is possible to more effectively suppress erroneous water discharge caused by the sensor detecting the water discharged from the water discharge port 13a of the water discharge unit 13.

Further, in the third embodiment, similarly to the first and second embodiments, the tip C6 of the LED 15 has the detection direction A23 of the sensor 14 so that the sensor 14 can hardly detect the light emitted from the LED 15. On the other hand, it is arranged on the rear side of the tip C5 of the sensor 14. In other words, the tip C5 of the sensor 14 is arranged on the front side of the tip C6 of the LED 15.

Furthermore, in the third embodiment, the tip C6 of the LED 15 is arranged in the second direction of the second water discharger 13 with respect to the detection direction A23 of the sensor 14 so that the light emitted from the LED 15 is less likely to be detected by the sensor 14. The second spout 13a is arranged rearward of the tip C4. In other words, the tip C4 of the second water discharge port 13a of the second water discharger 13 is arranged in front of the tip C6 of the LED 15 in the detection direction A23 of the sensor 14.

Next, with reference to FIG. 19, a functional configuration of the automatic faucet device 1b according to the third embodiment of the present invention will be described. FIG. 19 is a block diagram schematically showing the functional configuration of the automatic faucet device 1b according to the third embodiment of the present invention.

As shown in FIG. 19, the automatic faucet device 1b according to the third embodiment does not include the first water discharge part 12, the first flow path 17, and the first electromagnetic valve 25, and thus the automatic faucet device 1b according to the above-described embodiment. The configuration is different from the automatic faucet device 1. In the automatic faucet device 1b according to the third embodiment, the controller 40 controls the opening/closing of the second electromagnetic valve 28 (the reason why the word "second" is attached is as described above). , ON/OFF of the spray water discharged from the second water discharger 13 via the second flow path 18 is switched.

Next, the control according to the third embodiment of the present invention will be described with reference to FIG. FIG. 19 is a time chart showing control according to the third embodiment of the present invention. FIG. 20 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, the drive signal supplied from the controller 40 to the electrolytic bath 37, and the controller. The drive signal supplied from 40 to the LED 15 is shown.

First, at time t61, the sensor signal switches from off to on, that is, the sensor 14 switches 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 causes the second water discharger 13 to spray normal water. Then, at time t62, the sensor signal switches from on to off, that is, the sensor 14 switches from the detection state to the non-detection state. At this time, the controller 40 stops energizing the second electromagnetic valve 28 and closes the second electromagnetic valve 28 to end the foam water discharge from the second water discharger 13, that is, the water discharge for hand washing. To finish.

After that, when the non-detection state of the sensor 14 continues for a predetermined time T1 from the time t62 when the spray water discharge as the hand-wash water discharge is completed, the controller 40 causes the second water discharge portion 13 to perform the spray water discharge again. Specifically, the controller 40 first turns on the LED 15 at time t63, and at time t64 immediately after this time t63 (corresponding to the time after a predetermined time T1 has passed from the time t62 at which the spout for hand washing was completed). , The second solenoid valve 28 is energized to open the second solenoid valve 28. Then, at time t65 immediately after this time t64, the controller 40 energizes the electrolytic bath 37 to generate electrolytic water in the electrolytic bath 37, thereby spraying and discharging electrolytic water from the second water discharger 13. That is, after-water discharge is performed.

Thereafter, at time t66 when a predetermined time T3 (for example, 1.9 seconds) has passed from time t64 when the second electromagnetic valve 28 was opened, the controller 40 stops energizing the electrolysis tank 37 to cause the electrolysis tank 37 to operate. The production of electrolyzed water at 37 is terminated. At this time, since the second electromagnetic valve 28 is still open, the spray water is continuously discharged from the second water discharger 13. Then, at time t67 after time t66, specifically, at time t67 when a predetermined time T2 (for example, 3.5 seconds) has elapsed from time t64 when the second electromagnetic valve 28 was opened, the controller 40 causes the LED 15 to operate. Is turned off to terminate the irradiation of light from the LED 15, and the second solenoid valve 28 is closed by stopping the energization of the second solenoid valve 28, thereby spraying from the second water discharger 13. The water discharge is finished, that is, the after-water discharge is finished.

(Operation and effect of the third embodiment)
Next, the function and effect of the automatic faucet device according to the third embodiment of the present invention will be described. Here, only the operation and effect different from the above-described first embodiment will be described.

According to the third embodiment, the tip C5 of the sensor 14 is disposed on the rear side of the tip C4 of the water discharge port 13a of the second water discharge unit 13. In other words, the tip C4 of the water outlet 13a of the second water discharger 13 is arranged on the front side of the tip C5 of the sensor 14. Therefore, as compared with the case where the tip C5 of the sensor 14 is arranged in front of the tip C4 of the water outlet 13a of the second water outlet 13, the detection range of the sensor 14 and the water outlet 13a of the second water outlet 13a. The density of the water spouted in the portion where the water spouting range overlaps is low. Therefore, as compared with the case where the tip C5 of the sensor 14 is disposed in front of the tip C4 of the water outlet 13a of the second water outlet 13, the water discharged from the water outlet 13a of the second water outlet 13 is discharged. False discharge of water due to the detection by the sensor 14 can be suppressed more effectively.

In the third embodiment, the tip C5 of the sensor 14 is arranged rearward of the tip C4 of the water outlet 13a of the second water discharger 13, but the tip C5 of the sensor 14 and the second tip The tip C4 of the water outlet 13a of the water outlet 13 may be arranged at the same position. Also in this case, as compared with the case where the tip C5 of the sensor 14 is arranged in front of the tip C4 of the water discharge port 13a of the second water discharger 13, the detection range of the sensor 14 and the discharge of the second water discharger 13 are compared. The density of the discharged water becomes low in the portion where the water discharge range from the water outlet 13a overlaps. Therefore, compared with the case where the tip C5 of the sensor 14 is disposed on the front side of the tip C4 of the water outlet 13a of the second water outlet 13, the water discharged from the water outlet 13a of the second water outlet 13 is discharged. False discharge of water due to the detection by the sensor 14 can be suppressed more effectively.

<Modification>
Next, a modified example of the above-described embodiment will be described. Note that the modified examples described below can be applied to the above-described embodiment by appropriately combining them.

(Modification 1)
In the above-described first and second embodiments, the foam water discharge is performed from the first water discharge part 12, but it is not limited to applying the foam water discharge. As the form of water discharge from the first water discharge part 12, shower water discharge in which water is discharged in a shower form from a large number of water discharge ports having a small diameter, or straight form from one or more water discharge ports having a relatively large diameter. Various spouting forms such as straight spouting for spouting water (strictly speaking, the spouting spout shown in the above-mentioned embodiment is included in this straight spouting) and a spouting form in which foam spouting and shower spouting are combined are applied. It is possible.

(Modification 2)
In the above-described first and second embodiments, the two solenoid valves, the first solenoid valve 25 and the second solenoid valve 28, are used to discharge the water from the first water discharge unit 12 and the second solenoid valve. Although the water discharge from the water discharger 13 is switched, the water discharge from the first water discharger 12 and the water discharge from the second water discharger 13 may be switched using only one solenoid valve.

With reference to FIG. 16, the functional configuration of the automatic faucet device according to Modification 3 in the embodiment of the present invention will be described which uses only one solenoid valve. FIG. 16 is a block diagram schematically showing a functional configuration of an automatic faucet device according to Modification 3 in the embodiment of the present invention. Here, the same components as those of the automatic faucet device 1 shown in FIG. 6 are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 16, the automatic faucet device 1a according to Modification 3 has a solenoid valve 51 and a switching valve 52 instead of the first solenoid valve 25 and the second solenoid valve 28. The configuration is different from the automatic faucet device 1 shown. The solenoid valve 51 is provided on the common flow path 21, and is opened and closed under the control of the controller 40 to switch between normal water flow and cutoff in the common flow path 21. The switching valve 52 is provided at a connection point between the common flow channel 21 and the first flow channel 17 and the second flow channel 18, in other words, at a branch point at the downstream end of the common flow channel 21. The switching valve 52 operates under the control of the controller 40, and switches the flow path of the normal water 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. You may. When a switching valve as a mechanical valve is applied, the opening of a solenoid valve 51 provided on the common flow path 21 upstream of this switching valve is adjusted to adjust the water pressure applied to the switching valve. By doing so, the flow path through which the normal water flows may be switched between the first flow path 17 and the second flow path 18.

(Modification 3)
In the above-described first embodiment, second embodiment, and third embodiment, after-water discharge is performed using electrolytic water, but after-water discharge is performed using normal water without using electrolytic water. May be. In that case, the electrolytic bath 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 flowing out by hand washing from drying and adhering to the bowl 3 of the hand washing device 5 or the like.

(Modification 4)
In the first embodiment, the second embodiment, and the third embodiment described above, the after-water discharge is performed after a predetermined time has elapsed after the stop of the water discharge for hand washing (see FIG. 7, FIG. 14, etc.). ), in another example, after the water spouting for hand washing is stopped, after-water spouting may be performed without a gap, that is, after-water spouting may be performed continuously with the water spouting for hand-washing.
In still another example, after-water discharge may be started during execution of hand-wash water, and the after-water discharge may overlap with the hand-wash water discharge. In that case, while the sensor 14 is in the detection state, spouting water for hand washing is performed, and when the sensor 14 is switched from the detection state to the non-detection state, after-water spouting is started while continuing spouting water for hand washing. The end time of the spouting water for use and the start time of the after spouting water may be overlapped. However, it is assumed that the hand-wash water discharge is stopped before the after-water discharge, in other words, the after-water discharge is stopped after the hand-wash water discharge is stopped.

(Modification 5)
In the above-described first embodiment, second embodiment, and third embodiment, the automatic faucet device according to the present invention is applied to the hand washing device 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. In such a case, by performing after-water discharge, it is possible to prevent the dirt (dirty water) generated by the use of the kitchen from drying and adhering to the sink or the like.

1, 1b Automatic faucet device 3 Bowl 5 Hand wash device 11 Water discharge pipe 12 First water discharge part 12a First water discharge port 13 Second water discharge part 13a Second 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 (5)

An automatic faucet device that automatically discharges water when detecting an object to be detected,
A sensor for detecting the object to be detected,
A first ejection water unit for jetting water from the first water outlet by the detection of the sensor,
A second water spouting part for spouting water from the second water spouting port at a predetermined angle,
The sensor and the second spout of the second spout are provided at the tip of the automatic faucet device,
The above-mentioned sensor is arranged so that the detection direction for detecting the object to be detected faces away from the water discharge direction of the second water discharge part,
The sensor is arranged such that the detection direction for detecting the object to be detected is parallel to the water discharge direction of the first water discharge unit,
The first water outlet of the first ejection water unit, automatic faucet apparatus characterized by being arranged between the sensor and the second water outlet of the second water portion. The automatic water faucet device according to claim 1, wherein the sensor is disposed on a front side, which is a front side of the automatic water faucet device, with respect to a second water outlet of the second water spout unit. The tip of the sensor is located at the same position as the tip of the second spout of the second water spout or on the rear side which is the inner side of the automatic faucet device than the tip of the second spout of the second water spout. The automatic faucet device according to claim 1 or 2, which is provided. Further comprising an illumination unit for irradiating the water discharged by the second water discharge unit with light,
The illumination unit is provided at the tip of the automatic faucet device,
The automatic faucet device according to any one of claims 1 to 3, wherein a tip of the illumination unit is disposed on a rear side that is a rear side of the automatic faucet device with respect to a tip of the sensor. The automatic faucet device according to claim 4, wherein a tip of the illumination unit is disposed on a rear side that is a back side of the automatic faucet device with respect to a tip of a second water outlet of the second water discharge unit. ..

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