WO2015141000A1

WO2015141000A1 - Water faucet device having bactericidal function, and sink

Info

Publication number: WO2015141000A1
Application number: PCT/JP2014/057853
Authority: WO
Inventors: 明範山本; 川野　裕三; 秋山　秀典
Original assignee: 株式会社タカギ; 国立大学法人熊本大学
Priority date: 2014-03-20
Filing date: 2014-03-20
Publication date: 2015-09-24
Also published as: JP6174241B2; JPWO2015141000A1

Abstract

One embodiment of a water faucet device according to the present invention is equipped with: a water spout; a valve for switching between the discharge of water through the water spout and the termination of the discharge of water; and a plasma generator. The water spout is formed in the shape of a complete or incomplete ring so that the flow of water discharged through the water spout can have a hollow part formed therein, and an opening through which plasma can be discharged is provided at a position surrounded by the water spout.

Description

Water faucet device with sterilization function and sink

The present invention relates to a faucet device having a sterilizing function and a sink.

An apparatus for sterilizing hands, products and instruments using plasma is known. For example, Patent Document 1 discloses a sterilization apparatus including a blower for supplying plasma to a predetermined position. Patent Document 2 discloses a cleaning device including a mist generator containing plasma.

Japanese Patent No. 5347098 Japanese Patent No. 4536936

By the way, hand washing with water is one of the most basic hygiene controls. Bacteria and dirt attached to the hand can be washed away with water, and sterilization is possible by using a soap having a bactericidal action. However, in places where higher hygiene management is required (for example, hospitals), in order to deal with bacteria that cannot be sufficiently removed by hand washing alone, washing may be performed using alcohol in addition to hand washing. is there.

The present invention provides a faucet device and a sink capable of performing a more advanced sterilization treatment on an object while providing the user with a sense similar to that of conventional cleaning using water discharged from the faucet device. The purpose is to provide.

The faucet device according to the first aspect of the present invention includes a water outlet, a valve that switches between discharge and stop of water from the water outlet, and a plasma generator. In the plasma generator, so-called “plasma” such as ions, radicals, and electrons is generated by discharge to gas. And the water outlet is formed in the perfect or incomplete ring so that the water discharged | emitted from a water outlet forms the flow which has a hollow part. In addition to this, the opening from which the plasma is released is provided at a position surrounded by the water outlet so that the plasma from the plasma generator is supplied into the hollow portion of the water flow. According to this faucet device, the flow of water from the water outlet serves as a plasma guide. That is, by introducing plasma into the hollow portion of the water flow, the plasma can be surrounded by a “curtain” of water. Thereby, it can fully suppress that plasma interferes with surrounding gas (for example, air), As a result, it becomes possible to deliver a plasma more reliably to a cleaning position. Further, in order to make it possible to reliably deliver the plasma to the cleaning position, a blower for pushing the plasma toward the hollow portion of the water flow may be employed.

The faucet device according to the second aspect of the present invention includes a water outlet, a valve that switches between discharge and stop of water from the water outlet, a plasma generator, and a trajectory of water discharged from the water outlet. A guide for guiding plasma from the plasma generator is provided at a cleaning position where water hits an object to be processed. According to this faucet device, the plasma generated by the plasma generator is supplied to the cleaning position through the guide, and the object (hand, product, instrument, etc.) placed at this position is cleaned with water and plasma The sterilization process can be performed. As an example of the guide, a plasma flow channel (for example, a tube) directed from the plasma generator toward the cleaning position can be cited. In order to more reliably deliver the plasma to the cleaning position, a guide and a blower for sweeping the plasma may be used in combination.

In each aspect of the present invention, helium gas may be supplied to the plasma generator, and the plasma generator may generate helium radicals. Helium tends to maintain the radical state for a long time compared to other radical sources (eg, oxygen, chlorine, etc.). For this reason, the use of helium has an advantage that it is easy to ensure the distance from the plasma generator to the cleaning position. If the time from radical generation to extinction is about 100 nanoseconds to 1 second, the distance from the tip of the electrode of the plasma generator to the cleaning position should be set to 5 to 50 cm (preferably about 30 cm). Is possible. Further, if the plasma moves or the moved plasma generates a new plasma at the cleaning position, radicals are generated at the cleaning position, and cleaning is possible regardless of the radical extinction time.

In the cleaning position, it is preferable that hydroxyl radicals are generated when the radicals contained in the plasma from the plasma generator hit the water from the water outlet. Hydroxy radicals have high reactivity and oxidizing power compared to oxygen radicals, chlorine radicals, and the like, and thus have a high bactericidal effect. Moreover, you may make it the ultraviolet-ray generated by the discharge in a plasma generator irradiate the target object of a washing position. Since ultraviolet rays have bactericidal properties, it can be expected to contribute to the sterilization of objects.

Furthermore, the present invention provides a sink with a sterilizing function. A sink according to an aspect of the present invention includes the faucet device according to the first or second aspect, and a tub provided at a position for receiving water from the faucet device and having a drain outlet. According to this sink, the plasma generated by the plasma generator is supplied to the cleaning position, and the object (hand, product, instrument, etc.) placed at this position is cleaned with water and sterilized with plasma. Can be implemented.

In the sink according to the second aspect of the present invention, the trough portion has a plasma generator. The sink includes a faucet device and a tub. And a faucet device has a water outlet and a valve which switches discharge and stop of water from a water outlet. The trough portion is provided at a position to receive water from the faucet device, and is in the middle of a trajectory of water discharged from the drain port, the plasma generator, and the water discharge port, and water is supplied to the object to be treated. And a guide for guiding the plasma from the plasma generator at the cleaning position where the According to this sink, the plasma generated by the plasma generator is supplied to the cleaning position through the guide, and the objects (hands, products, instruments, etc.) placed at this position are cleaned with water and sterilized with plasma. Processing. As an example of the guide, a plasma flow channel (for example, a tube) directed from the plasma generator toward the cleaning position can be cited. In order to more reliably deliver the plasma to the cleaning position, a guide and a blower for sweeping the plasma may be used in combination.

From the viewpoint of user convenience, the faucet device or sink is a control unit that controls the plasma generator so that the plasma generator automatically generates plasma when water discharge from the spout is started. May be further provided.

As the power source of the plasma generator, any of a DC power source, an AC power source, a high frequency power source and a pulse power source may be adopted, but from the viewpoint of reducing heat loss, high efficiency discharge and extending the life of the plasma generator, etc. It is preferable to employ a pulse power supply.

According to the present invention, it is possible for a user to perform a more advanced sterilization treatment on an object while having the same feeling as a conventional cleaning using water discharged from a faucet device.

It is a perspective view which shows the water faucet device which concerns on 1st embodiment of this invention, and a sink provided with this. It is a schematic diagram which expands and shows the peripheral part of the water outlet of the water faucet device shown in FIG. It is a perspective view which shows the state which discharge | releases water from the water outlet shown in FIG. 2, and has discharged | emitted the plasma from the plasma generator. It is a perspective view which shows the other example of the shape of a water outlet. It is a perspective view which shows the further another example of the shape of a water outlet. It is sectional drawing which shows typically the internal structure of the spout with which the faucet device shown in FIG. 1 is provided. It is sectional drawing which shows typically the plasma generator incorporated in the spout shown in FIG. It is a circuit diagram which shows an example of a pulse power supply. It is a perspective view showing a sink provided with a faucet device concerning a second embodiment of the present invention. It is a perspective view showing a sink provided with a faucet device concerning a third embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description, the same reference numerals are used for the same elements or elements having the same function, and a duplicate description is omitted.

<First embodiment>
The sink 100 with a sterilization function shown in FIG. 1 includes a faucet device 20A and a tub 40. According to the sink 100, it is possible for a user to perform a higher degree of sterilization treatment on an object to be cleaned (hands, products, instruments, etc.) while having the same feeling as conventional cleaning using water. is there. That is, by disposing the target object at a position (cleaning position P) where the water hits in the middle of the trajectory of the water discharged from the spout 1, it is possible to carry out a sterilization process using plasma in addition to cleaning with water. it can.

The tub 40 is provided at a position below the water outlet 1 of the faucet device 20 </ b> A and receiving water from the water outlet 1. The tub portion 40 has a drain port 41a provided at the bottom and a plug 41b for closing the drain port 41a. By operating a handle (not shown), the stopper 41b can be moved in the vertical direction, so that the opening / closing of the drain port 41a can be switched. The opening 42 is for preventing water from overflowing in a state where the drain port 41a is closed by the stopper 41b. The opening 42 is provided at a position slightly lower than the upper end 40 a of the tub portion 40.

Hereinafter, the configuration of the faucet device 20A will be described. The faucet device 20 </ b> A includes a faucet unit 2, a faucet unit 3, and a plasma generator 10. The faucet unit 2 includes a pedestal 4, a mixed faucet (valve) 6, and a lever 7. A cylindrical faucet cover 8 that protrudes upward is provided at the center of the base 4. The mixed faucet 6 is accommodated in a faucet cover 8. The faucet cover 8 is rotatable about a vertical axis, and a spout 9 protruding obliquely upward is provided on the outer periphery of the faucet cover 8. The lever 7 is disposed on the faucet cover 8 and connected to the mixing faucet 6. A water supply pipe and a hot water supply pipe are connected to the mixing tap 6. In addition, the mixing tap 6 is not limited to said type, A various type is employable. Instead of the mixing tap 6, for example, a total of two valves may be employed to adjust the flow rates of cold water and hot water, respectively.

It is possible to switch between water discharge and stop by operating the tip side of the lever 7 in the vertical direction. Moreover, the temperature of water can be adjusted by rotating the lever 7 in the left-right direction. Water from the water supply pipe and hot water from the hot water supply pipe are sent to the spout 9 through the mixing tap 6. According to the mixing tap 6, it is possible to adjust the outflow amount of hot water in conjunction with the vertical movement of the lever 7, and to adjust the mixing ratio of hot water in conjunction with the horizontal rotation of the lever 7. Is possible. By rotating the faucet cover 8, the direction of the spout 9 can be changed, and the outflow direction of the hot water can be changed. The faucet cover 8 may not be rotatable with respect to the base 4, that is, the direction of the spout 9 may be fixed. Moreover, you may employ | adopt the automatic faucet which discharge | release and stop of water are controlled by a sensor instead of the manual faucet which the lever 7 is operated by the user.

A spout 1 is provided on the lower surface on the tip side of the spout 9. As shown in FIG. 2, the water discharge port 1 is formed in an annular shape, whereby a water flow F having a hollow portion Fa can be generated from the water discharge port 1 (see FIG. 3). The water flow F having the hollow portion Fa serves as a plasma guide. That is, the plasma PS from the plasma generator 10 passes through the hollow portion Fa and reaches the cleaning position P. The plasma generator 10 is disposed in the vicinity of the annular spout 1 (see FIG. 6), and an opening 15a through which plasma is emitted is provided at a position surrounded by the spout 1. Thereby, plasma can be supplied into the hollow portion Fa. By making the plasma from the plasma generator 10 surrounded by a “curtain” of water, it is possible to sufficiently suppress the interference of the plasma PS with the surrounding gas (for example, air). As a result, the plasma PS is cleaned. It becomes possible to deliver to the position P more reliably.

In addition, although the case where the water discharge port 1 was a perfect ring shape was illustrated here, as long as the flow F of water can fully fulfill | perform the role as a plasma guide, the shape of the water discharge port 1 is not a perfect ring shape. May be. As shown in FIGS. 4 and 5, the shape of the water discharge port 1 may be an incomplete ring shape. The water discharge port 1 shown in FIG. 4 is formed in a C shape. The water outlet 1 shown in FIG. 5 includes a large number of openings 1 a arranged so as to surround the plasma generator 10. When the spout 1 has an incomplete annular shape, that is, when there is a portion (intermittent portion) that is not open in the middle of the spout 1 formed along the annular line, the intermittent portion along the annular line. When the sum of the lengths is A and the sum of the lengths of the water discharge ports along the annular line is B, the value of (A / (A + B)) is preferably 0.8 or less, more preferably 0.8. 5 or less, more preferably 0.3 or less. When the value is 0.8 or less, the guide function by the water flow F can be sufficiently increased.

FIG. 5 illustrates a mode in which the water outlet 1 is configured by a large number of openings 1a arranged along one annular line, but the mode of the water outlet 1 is not limited thereto. For example, you may further form many opening arrange | positioned along another cyclic | annular line in the outer side and / or inner side of the water outlet 1 which consists of multiple rows of water outlets, ie, many opening 1a. By making the arrangement of the spouts more than double, the guide function by the water flow F can be made higher. From the viewpoint of compacting the apparatus, the number of annular lines for disposing the openings is preferably 10 or less, more preferably 5 or less, and even more preferably 3 or less. As long as the water flow F from the water outlet 1 can sufficiently serve as a plasma guide, the arrangement of the water outlet 1 is not limited to an annular shape, and may be rectangular or triangular, for example.

FIG. 6 is a cross-sectional view schematically showing the internal structure of the spout 9. In the spout 9, a flow path 9 a for supplying water from the mixing faucet 6 to the spout 1, a plasma generator 10 built in the tip of the spout 9, and the voltage of the pulse power supply 30 to the plasma generator 10 Are provided with a plurality of

cables

30a and 30b, and a flow path 9b for supplying air from the blower 35 to the plasma generator 10.

FIG. 7 is a cross-sectional view schematically showing the plasma generator 10. As shown in FIG. 7, the plasma generator 10 includes a rod-shaped electrode 11a, a cylindrical insulator 12 arranged to cover the outside of the electrode 11a, and a cylinder arranged to cover the outside of the insulator 12. And a ground electrode 11b. The electrode 11a extends in the direction of the opening 11c of the ground electrode 11b. The high voltage cable 30a is connected to the electrode 11a, and the ground cable 30b is connected to the ground electrode 11b. When a pulse voltage is applied between the electrode 11a and the ground electrode 11b, a discharge is generated between them, thereby generating plasma. The ground electrode 11b has an opening 11c at the tip. Examples of the material of the electrode 11a and the ground electrode 11b include metals such as tungsten, aluminum, copper, and iron. Among these, tungsten has a high melting point and excellent hardness (strength).

The lower limit of the diameter of the electrode 11a is preferably 0.01 mm, more preferably 0.1 mm, even more preferably 0.5 mm, while the upper limit is preferably 10 mm, more preferably 5 mm. And more preferably 3 mm. If the diameter of the electrode 11a is less than 0.01 mm, the electrode 11a is likely to be broken or vibrates during use, while if the diameter exceeds 10 mm, the electrode 11a tends to hinder gas flow. The lower limit of the length of the electrode 11a is preferably 5 mm, more preferably 10 mm, even more preferably 20 mm, while the upper limit is preferably 100 mm, more preferably 70 mm, and still more preferably. Is 50 mm or less. If the length of the electrode 11a is less than 5 mm, it is difficult to secure a sufficient area for discharge, and the amount of plasma generated tends to be insufficient. On the other hand, if the length exceeds 100 mm, the support for the electrode 11a or a large scale is required. It is easy to need a proper countermeasure against electric leakage.

The lower limit value of the opening diameter of the ground electrode 11b is preferably 0.5 mm, more preferably 1 mm, still more preferably 5 mm, while the upper limit value is preferably 30 mm, more preferably 20 mm. Yes, more preferably 10 mm. If the opening diameter of the earth electrode 11b is less than 0.5 mm, the generated plasma tends to be difficult to reach far away. On the other hand, if it exceeds 30 mm, a large blower or the like that generates a large flow of air is required. Cheap.

The earth electrode 11b has an opening 11c at the center of a disk-shaped plate as shown in FIG. The lower limit value of the length in the extending direction of the opening 11c (the thickness of the plate) is preferably 1 mm, more preferably 1.3 mm, still more preferably 1.5 mm, while the upper limit value is Preferably it is 5 mm, More preferably, it is 4.5 mm, More preferably, it is 4 mm. If the length in the extending direction of the opening 11c is less than 1 mm, the strength of the ground electrode 11b tends to be insufficient, while if it exceeds 5 mm, the weight and cost of the ground electrode 11b tend to be excessive.

Examples of the material of the insulator 12 include ceramic, resin, glass, paper, and the like. Since ceramic has a high dielectric breakdown voltage, the use of ceramic has the advantage that excellent reliability can be obtained and the apparatus can be miniaturized. Resins have the advantages of relatively high dielectric breakdown voltage and high processability.

As shown in FIG. 6, the tip of the plasma generator 10 is covered with an insulator 15 to ensure the safety of the user. Plasma PS is emitted from an opening 15 a provided in the insulator 15. The opening 15 a is provided at a position surrounded by the water outlet 1. In order to jet plasma vigorously from the opening 15a, the faucet device 20A includes a blower 35 for sweeping away the plasma. The air from the blower 35 passes through the flow path 9b, reaches the plasma generator 10, and is injected together with the plasma PS from the opening 15a. By using the blower 35, the plasma can be delivered to the cleaning position P more reliably. As the blower, a blower equipped with devices such as a pump and a fan can be adopted. You may comprise a blower using the gas cylinder filled with gas.

Plasma PS is generated by the discharge by the plasma generator 10. The atmosphere in the place where the discharge is generated may be air, but may be a mixed gas of a specific gas type and air. Specific gas species include rare gases such as helium, neon, and argon; halogens such as fluorine and chlorine; water vapor; nitrogen and oxygen. Among these, the advantages of the rare gas are that it is chemically inert and easy to handle, and it is easy to maintain the plasma state. The advantage of halogen is its high ability to decompose substances such as ionization energy, electron affinity, and electronegativity. The advantages of nitrogen and oxygen are that they are inexpensive and abundantly used, and that they generate various radicals. The advantage of water vapor is that it contributes to an increase in the amount of hydroxy radicals that are highly sterilizing. These gas types may be used alone, or two or more gas types may be used in combination. These gas species are easily plasmatized by discharge, and have the property that the radical state is maintained for a relatively long time. When a specific gas type is used, the specific gas type may be introduced into a pipe for transferring air from the blower 35 to the plasma generator 10, and a flow path for the specific gas type is provided in the plasma generator. The gas species may be directly introduced into the plasma generator 10.

The above specific gas species may be used alone or in combination of two or more. One or more kinds of the specific gas species may be supplied to the plasma generator 10 as they are, or a mixed gas of the specific gas type and air may be supplied to the plasma generator 10. The volume ratio of the specific gas species in the mixed gas is preferably 0.3 or more, more preferably 0.5 or more, and further preferably 0.8 or more. By setting the volume ratio to 0.3 or more, it is easy to generate a sufficient amount of plasma from the plasma generator 10.

Among the above specific gas types, helium tends to maintain the plasma state for a long time compared to other gas types. For this reason, there is an advantage that it is easy to secure a distance from the plasma generator 10 to the cleaning position P by using helium. If the time from generation of radicals to extinction is about 100 nanoseconds to 1 second, the distance from the tip of electrode 11a of plasma generator 10 to the cleaning position is set to 5 to 50 cm (preferably about 30 cm). Is possible. In order to make the plasma reach the cleaning position P more reliably, it may be devised to adjust the amount of air blown from the blower or to arrange a circular tube or a tapered nozzle in the flow path through which the plasma passes. From the standpoint of achieving both a bactericidal effect and ease of use, the distance from the tip of the electrode 11a of the plasma generator 10 to the surface of the tub 40 is preferably set to 20 to 60 cm.

In this embodiment, a pulse power source is adopted as the power source of the plasma generator 10 (see FIG. 6). By using the pulse power supply 30, electrons having a light mass among electrons and ions can be selectively accelerated, thereby generating low-temperature plasma. As a result, generation of unnecessary heat can be suppressed and heat loss can be reduced. The pulse power source can be manufactured using, for example, a DC power source, a capacitor, a semiconductor switch, a booster, a magnetic switch, and the like (see FIG. 8). The maximum operating voltage of the pulse power supply is preferably 1 to 100 kV, the pulse rise time is preferably 1 to 100 ns, and the maximum switching frequency is preferably 0.1 to 20 kHz. Instead of the pulse power source, for example, a DC power source or a high frequency power source may be employed.

Examples of discharge forms include corona discharge, glow discharge, arc discharge, and silent discharge. Among these discharge modes, it is preferable to generate arc discharge or silent discharge by a pulse power source from the viewpoint of efficiently generating active oxygen species or hydroxy radicals effective for sterilization.

As shown in FIG. 6, from the viewpoint of user convenience, the faucet device 20 </ b> A is configured so that when the discharge of water from the spout 1 is started, the plasma generator 10 automatically generates plasma. It is preferable to further include a control unit 50 for controlling 10. The control unit 50 can be configured using, for example, a sensor or a computer.

According to the faucet device 20A according to the present embodiment, the plasma PS can stably reach the cleaning position P by the water flow F having the hollow portion Fa. Thereby, the physical washing | cleaning by water and the sterilization process by a radical can be implemented simultaneously. In particular, when the plasma from the plasma generator and water come into contact with each other at the cleaning position P, it is possible to generate hydroxy radicals having high sterilizing ability in the vicinity of the object.

According to the faucet device 20A, it is possible to expect a sterilizing effect for both bacteria and viruses by plasma. It is considered that various radicals (particularly hydroxy radicals having strong oxidizing power) react with proteins and lipids constituting bacteria and viruses and destroy them to inactivate bacteria and viruses and eliminate infectivity.

<Second embodiment>
In the first embodiment, as illustrated in FIG. 3, the case where the water flow F plays a role of guiding the plasma PS is illustrated, but the plasma generator 10 is provided at a position other than the vicinity of the water outlet 1, The faucet device may include a plasma guide for guiding the plasma generated by the plasma generator 10 to the cleaning position P. FIG. 9 is a perspective view of the sink 200 according to the second embodiment. The faucet device 20B shown in FIG. 9 is different from the first embodiment in that the plasma generator 10 is provided in the spout 9. The plasma is emitted toward the cleaning position P by passing through the cylindrical guide 60. In the present embodiment, the air from the blower 35 (see FIG. 6) can be supplied to the plasma generator 10 in order to more reliably deliver the plasma PS to the cleaning position P. Examples of the material of the guide 60 include materials such as resin and metal. Among these, a resin material is preferable from the viewpoint of processability, water resistance, and chemical resistance.

<Third embodiment>
In the first and second embodiments, the case where the faucet device includes the plasma generator 10 is illustrated, but the sink basin 40 may include the plasma generator 10. FIG. 10 is a perspective view of the sink 300 according to the third embodiment. The sink 300 shown in FIG. 10 is different from the first and second embodiments in that the plasma generator 10 is provided in the tub 40. The sink 300 shown in FIG. 10 is arranged so as to be aligned with the faucet device 20C and the faucet device 20C that automatically discharges water by the action of the sensor when the object to be cleaned (such as a hand) is arranged at the cleaning position P. And a water soap supply plug 70 arranged at a position opposite to the plasma generator 10 and in line with the water faucet device 20C. The plasma PS is emitted toward the cleaning position P by passing through the cylindrical guide 60. In order to more reliably deliver the plasma PS to the cleaning position P, the air from the blower 35 (see FIG. 6) can be supplied to the plasma generator 10.

DESCRIPTION OF SYMBOLS 1 ... Water outlet, 1a ... Opening (water outlet), 6 ... Mixed water tap (valve), 10 ... Plasma generator, 15a ... Opening from which plasma is emitted, 20A, 20B, 20C ... Water faucet device, 30 ... Pulse Power source, 35 ... blower, 40 ... trough part, 50 ... control part, 60 ... guide, 100, 200, 300 ... sink, F ... flow of water, Fa ... hollow part, P ... cleaning position, PS ... plasma.

Claims

The spout,
A valve for switching between water discharge and stop from the water outlet;
A plasma generator;
With
The water outlet is formed in a complete or incomplete ring shape so that the water discharged from the water outlet forms a flow having a hollow portion,
A faucet with a sterilizing function, wherein an opening through which the plasma is released is provided at a position surrounded by the water outlet so that the plasma from the plasma generator is supplied into the hollow portion of the water flow apparatus.
The spout,
A valve for switching between water discharge and stop from the water outlet;
A plasma generator;
A guide for guiding the plasma from the plasma generator to a cleaning position in the middle of a trajectory of water discharged from the spout and where water hits an object to be treated;
A faucet device with a sterilizing function.
The faucet device according to claim 1 or 2, further comprising a blower for sweeping away the plasma.
The faucet device according to any one of claims 1 to 3, wherein helium gas is supplied to the plasma generator, and the plasma generator generates helium radicals.
The faucet device according to any one of claims 1 to 4, wherein a distance from the plasma generator to a cleaning position is in a range of 5 to 50 cm.
The faucet device according to any one of claims 1 to 5, wherein a hydroxyl radical is generated when a radical contained in the plasma from the plasma generator hits water from the spout at a cleaning position.
7. The apparatus according to claim 1, further comprising a control unit that controls the plasma generator so that the plasma generator automatically generates plasma when the discharge of water from the water outlet is started. The water faucet device according to item.
The faucet device according to any one of claims 1 to 7, further comprising a pulse power source as a power source of the plasma generator.
A faucet device according to any one of claims 1 to 8,
A trough portion provided at a position for receiving water from the faucet device and having a drain;
Sink with sterilization function.
A sink comprising a faucet device and a basin,
The faucet device has a water outlet, and a valve that switches between discharging and stopping water from the water outlet,
The trough portion is provided at a position to receive water from the faucet device, and is in the middle of a trajectory of water discharged from the drain port, the plasma generator, and the spout port, and is an object to be processed. A sink with a sterilizing function, having a guide for guiding the plasma from the plasma generator at a cleaning position where water hits.
The sink according to claim 10, further comprising a blower for flushing the plasma.
12. The sink according to claim 10, further comprising a control unit that controls the plasma generator such that the plasma generator automatically generates plasma when water discharge from the water outlet is started. .
The sink according to any one of claims 10 to 12, comprising a pulse power source as a power source of the plasma generator.