JP5842176B2 - Faucet device - Google Patents

Description

  The present invention relates to a faucet device that discharges hot water containing gas bubbles having functionality such as oxygen-enriched air and ozone gas.

  The need for sterilization in the water space is broad. For example, kitchens are expected to sterilize hands and ingredients, sterilize cloths and cutting boards, control drainage at drains, and deodorize ingredients. Such needs are similarly applied to vanities, toilets, bathrooms, and the like.

  Sterilization is generally performed using dissolved ozone water in which ozone gas is dissolved in hot water, but the use of hot water mixed with bubbles of ozone gas has also been studied. Ozone gas has the advantage that it has little persistence, is environmentally friendly, and is difficult to produce resistant bacteria. In addition, ozone gas bubbles are advantageous in that they generate less energy than dissolved ozone water, are inexpensive, are easy to maintain, and are compact in size.

  The present applicant has proposed a microbubble cleaning nozzle in Patent Document 1 below. This microbubble cleaning nozzle is provided with a gas mixing portion in the flow path of the cleaning water flow path formed in the nozzle body, and a micro bubble spout for discharging the micro bubble cleaning water at the downstream end of the cleaning water flow path. is there. When tap water passes through the throttle pipe disposed in the upstream portion of the washing water flow path, a negative pressure is generated in the vicinity of the gas mixing section of the cleaning water flow path, and this negative pressure causes the cleaning water flow path through the gas mixing section. Outside air is introduced and washing water containing bubbles is generated.

  Such a microbubble cleaning nozzle is expected to be applied not only to air but also to the production of hot water containing gas bubbles having functionality such as oxygen-enriched air and ozone gas.

JP 2010-7315 A

  However, in the microbubble cleaning nozzle described in Patent Document 1, since the gas is drawn into the water by the negative pressure generated by the water flow in the nozzle body, the negative pressure disappears when the water supply is stopped. Depending on the positional relationship with the remaining water, there is a concern that water may flow back to the gas introduction part. When a gas supply path of a gas having functionality such as oxygen-enriched air or ozone gas is connected to the gas introduction part, there is a possibility that water that flows back in this way enters the gas supply path.

  This invention is made | formed in view of the above situations, and makes it a subject to provide the water faucet device which can suppress that a hot water permeates into a gas supply path by backflow at the time of a water supply stop.

In order to solve the above problems, the faucet device of the present invention includes a gas generating unit that is disposed under the flange of the counter or sink and generates a functional gas, and a downstream end at the discharge port. A gas introduction section that mixes a functional gas into hot water near the discharge port on the downstream end side in the middle of the water supply path, and the functionality generated by the gas generation section. A gas supply path for supplying a gas having a gas pressure rises from the lower side of the flange of the counter or sink, and has one end connected to the gas introduction part and the other end connected to the gas generation part. The connection part to the gas introduction part of a gas supply path is provided with the downward flow path through which the gas which has functionality flows from a high position to a low position, It is characterized by the above-mentioned.

In this faucet device, it is preferable that the gas introduction part is formed by connecting a first crushing nozzle, a second crushing nozzle, and a third crushing nozzle having a Venturi tube inside in series .

  According to the water faucet device of the present invention, it is possible to suppress hot water from entering the gas supply path by backflow when water supply is stopped.

It is a lineblock diagram showing roughly a 1st embodiment of a faucet device of the present invention. It is sectional drawing which showed one form of the gas introduction part in the water faucet device shown in FIG. (A), (b), and (c) are AA sectional drawing, BB sectional drawing, and CC sectional drawing of the gas introduction part shown in FIG. 2, respectively. It is the block diagram which showed schematically 2nd Embodiment of the faucet device of this invention.

  FIG. 1 is a configuration diagram schematically showing a first embodiment of the faucet device of the present invention.

  The faucet device 1 includes a hollow rising pipe portion 3 that is vertically suspended and attached to a flange 2 of a counter or sink that forms a top surface such as a sink or a vanity. The faucet device 1 also includes a hollow horizontal pipe portion 4 that is horizontally connected to the upper end portion of the rising pipe portion 3 and communicates with the rising pipe portion 3. A hollow discharge end 6 having a discharge port 5 at the lower end is connected vertically downward to the tip of the horizontal tube 4, and the discharge end 6 communicates with the horizontal tube 4.

  A water supply path 7 is introduced into the faucet device 1 through the counter or the flange 2, and the water supply path 7 extends inside the rising pipe section 3, the horizontal pipe section 4 and the discharge end section 6. The downstream end 7 a of the water supply channel 7 faces the discharge port 5 of the discharge end portion 6. The water supply path 7 can be formed from piping, and can supply hot water 8 having a desired temperature mixed with water or hot water.

  A gas introduction part that mixes ozone gas as a functional gas into the hot water 8 on the downstream end 7a side in the middle of the water supply path 7, that is, in the vicinity of the connection part of the horizontal pipe part 4 with the rising pipe part 3 9 is provided, and the gas introduction part 9 communicates with the water supply path 7. The gas introduction part 9 is arrange | positioned in the horizontal direction. The gas introduction unit 9 can mix ozone gas into the hot water 8 as bubbles, and the bubbles are made fine by crushing and shearing to generate fine bubbles having a bubble diameter of about 0.1 to 1000 μm in the hot water 8. be able to.

  An opening / closing valve 10 for starting and stopping water supply is provided in a portion of the water supply passage 7 located in the lower end portion of the rising pipe portion 3. As the on-off valve 10, a manual valve or an electric valve can be adopted, and manual or automatic operation of water supply is possible.

  Further, the faucet device 1 includes an ozone gas generation unit 11 a as a gas generation unit 11 below the counter or the flange 2. The ozone gas generation unit 11a includes a discharge electrode 12, and generates ozone gas by silent discharge or the like by energizing the discharge electrode 12 from air or oxygen 13 as a raw material to be supplied. Further, the faucet device 1 is provided with a control means 14 for controlling the operation of the ozone gas generator 11a and the like near the ozone gas generator 11a on the lower side of the counter or the flange 2. The control means 14 can be connected to a power source 15 such as a battery, a rechargeable battery, or a solar cell, in addition to a household power source AC 100 V or DC 12 V generated by hydroelectric power generation.

  The other end of a tubular gas supply path 16 having one end connected to the gas introduction section 9 is connected to the ozone gas generation section 11 a, and the ozone gas generation section 11 a communicates with the gas introduction section 9 through the gas supply path 16. The gas supply path 16 rises from the lower side of the counter or the flange 2, penetrates the counter or the flange 2, and extends inside the rising pipe portion 3 of the faucet device 1 to the gas introduction portion 9. The operation and stop of the ozone gas generation unit 11a are performed by input of an ON / OFF signal from a switch 17 provided on the side surface of the rising pipe unit 3, and the switch 17 is electrically connected to the control means 14.

  Further, in the faucet device 1, a drying unit 18 is provided on the upstream side of the ozone gas generation unit 11 a in the air or oxygen 13 supply direction. The drying unit 18 includes, for example, a hollow box 18a in which a large number of air holes for taking in air or oxygen are formed on the side surface, and silica gel is filled as a desiccant inside the box 18a. Silica gel is provided to remove moisture in the air or oxygen and can be regenerated. As the desiccant, it is also possible to employ one other than silica gel.

  When the switch 17 is turned on, the control means 14 activates the ozone gas generation unit 11a based on the signal input, and after the air or oxygen is sucked through the drying unit 18 and the moisture is removed, the ozone gas generation is performed. Ozone gas is generated by the discharge electrode 12 of the part 11a. The ozone gas generated by the ozone gas generation unit 11 a is supplied to the gas introduction unit 9 through the gas supply path 16 and mixed as bubbles in the hot water 8 supplied through the water supply path 7 in the gas introduction unit 9. In the gas introducing unit 9, the bubbles of the ozone gas are crushed and sheared, the bubbles are refined, and the hot water containing the fine bubbles of ozone gas has a sterilizing action. The hot water 8 containing ozone gas is discharged from the discharge port 5 through the water supply channel 7.

  When the switch 17 is turned off, the control means 14 stops the operation of the ozone gas generator 11a based on the signal input. Generation of ozone gas in the ozone gas generation unit 11a is stopped. In addition to the ON / OFF control by the switch 17, the control unit 14 operates the ozone gas generation unit 11a for a certain period of time from when the switch 17 is turned on, and after a certain period of time, the ozone gas generation unit 11a automatically It is also possible to incorporate a timer that stops operation.

  In the faucet device 1, a downward flow path 19 in which ozone gas as a functional gas flows from a high position to a low position is provided at a connection portion of the gas supply path 16 to the gas introduction section 9. The downward flow path 19 is disposed so that ozone gas flows downward toward the gas introduction unit 9, is located immediately above the gas introduction unit 9, and is connected to the gas introduction unit 9 perpendicularly. For this reason, when the water supply path 7 is closed by the operation of the on-off valve 10 and the water supply of the hot water 8 is stopped, the downward flow path 19 is always positioned above the position of the hot water 8 remaining in the water supply path 7. Therefore, even if the hot water 8 flows backward in the gas introduction part 9 due to the stop of water supply, the hot water 8 is prevented from entering the gas supply path 16. Intrusion into the gas supply path 16 due to the backflow of the hot water 8 when the water supply is stopped is also possible by providing a check valve, but in this case, the check valve is required to have a relatively high check performance. Therefore, there is a concern that the structure and operation control of the faucet device 1 become complicated. The downward flow path 19 has almost no such concern, and can enter the gas supply path 16 by the reverse flow of the hot water 8 when water supply is stopped relatively easily.

  Invasion of the hot water 8 into the gas supply path 16 by the downward flow path 19 as described above is ensured by the gas introduction part 9 being disposed near the discharge port 5. This is because the faucet device 1 makes it easy to connect the downward flow path 19 to the gas introduction part 9, and the hot water 8 tends to remain in the water supply path 7 upstream of the gas introduction part 9 when water supply is stopped. .

  FIG. 2 is a cross-sectional view showing an embodiment of a gas introduction part in the faucet device shown in FIG. FIGS. 3A, 3B, and 3C are an AA sectional view, a BB sectional view, and a CC sectional view, respectively, of the gas introduction part shown in FIG.

  The gas introduction part 9 has a first crushing nozzle 21 having one venturi pipe 20 inside, a second crushing nozzle 23 having seven venturi pipes 22 inside, and 37 venturi pipes 24 inside. The third crushing nozzle 25 is formed.

  The first crushing nozzle 21 has a substantially cylindrical shape, and the constricted portion 28 of the venturi tube 20 is disposed on the inlet 27 side disposed on the same plane as the inlet 26 of the venturi tube 20. In the venturi tube 20, the tube diameter gradually decreases from the inlet 26 toward the constricted portion 28, and the tube diameter gradually increases from the constricted portion 28 toward the outlet 29. The water supply channel 7 shown in FIG. 1 is connected to the inlet 27. The outlet 30 of the first crushing nozzle 21 is disposed on the same plane as the outlet 29 of the venturi tube 20.

  Further, in the first crushing nozzle 21, one end of the bypass flow path 31 is connected to a portion on the outlet 29 side close to the constricted portion 28 in the venturi pipe 20, and the bypass flow path 31 is coaxial with the venturi pipe 20 and its Arranged outside. As shown in FIG. 3A, the bypass channel 31 has an arc shape with a cross section of approximately 1/4, and is arranged concentrically with a circle with a cross section of the venturi tube 20. It is divided.

  A flow path switching plate 32 that is slidable in a direction orthogonal to the axis of the first crushing nozzle 21 is provided at a portion where one end of the bypass flow path 31 is connected to the venturi pipe 20.

  As shown in FIG. 1, the first crushing nozzle 21 communicates with the constricted portion 28 of the venturi tube 20 at one end, and the other end of the gas supply passage 16 shown in FIG. A gas introduction path 33 is provided. The cross-sectional shape of the air introduction path 33 is circular. When hot water 8 flows through the venturi pipe 20 from the inlet 27 toward the outlet 30 in the first crushing nozzle 21, the flow rate of the hot water 8 increases in the constricted portion 28, so that a low pressure is generated and ozone gas is introduced into the gas introduction path. It is sucked into the venturi tube 20 through 33. The ozone gas sucked in this way is mixed into the hot water 8 as bubbles, but the pressure increases as the hot water 8 flows through the venturi 20 toward the outlet 29, so that the bubbles are crushed and the bubble diameter is It gradually gets smaller.

  Further, in the first crushing nozzle 21, a flange 34 having a substantially rhombus shape in plan view is provided on the outer peripheral portion on the outlet 30 side as shown in FIG. The flange 34 projects outward from the outer periphery of the first crushing nozzle 21, and circular bolt holes 35 are formed at upper and lower ends corresponding to diagonal positions.

  Further, an O-ring 36 is provided on the outer peripheral portion of the first crushing nozzle 21 at the end portion on the outlet 30 side of the flange 34 in the first crushing nozzle 21.

  Similar to the first crushing nozzle 21, the second crushing nozzle 23 has a substantially cylindrical shape, while the end of the first crushing nozzle 21 on the outlet 30 side of the end portion on the inlet 37 side of the venturi tube 22. A first recess 38 having an inner diameter that matches the outer diameter is formed. The second crushing nozzle 23 is connected in series to the first crushing nozzle 21 by fitting the end of the first crushing nozzle 21 on the outlet 30 side inside the first recess 38. The O-ring 36 is in close contact with the inner peripheral surface of the first recess 38 to enhance water tightness.

  As shown in FIG. 3B, a flange 39 having a substantially rhombus shape in plan view is provided at the inlet edge of the second crushing nozzle 23 so as to overlap the flange 34 of the first crushing nozzle 21. It has been. The flange 39 protrudes outward from the outer periphery of the second crushing nozzle 23, and circular bolt holes 40 are formed at the upper and lower ends corresponding to the diagonal positions. The bolt hole 40 coincides with the bolt hole 35, and both the bolt holes 35 and 40 are communicated with each other.

  Further, in the second crushing nozzle 23, one venturi tube 22 is disposed at the central portion thereof, and six venturi tubes 22 are disposed at equal distances outside the venturi tube 22 disposed at the central portion. The six venturi tubes 22 are arranged at equal intervals. Thus, a total of seven venturi tubes 22 are arranged in parallel with the second crushing nozzle 23. In all the venturi tubes 22, the tube diameter gradually decreases from the inlet 37 toward the outlet 41 to the intermediate constricted portion, and the tube diameter gradually increases from the constricted portion.

  The Venturi tube 22 communicates with the Venturi tube 20 of the first crushing nozzle 21 by connecting the second crushing nozzle 23 and the first crushing nozzle 21 in series.

  In the second crushing nozzle 23, as shown in FIG. 2, the pipe diameter is further increased from the outside of the six venturi pipes 22 arranged outside at the end of the venturi pipe 22 on the outlet 41 side. A second recess 42, which is an enlarged space, is formed.

  In the second crushing nozzle 23, a bypass channel 43 is formed. The inlet of the bypass flow path 43 is disposed outside the six venturi tubes 22 disposed on the outside and extends toward the outlet 44 of the second crushing nozzle 23, and the outlet of the bypass flow path 43 is connected to the second recess 42. It is arranged outside. As shown in FIG. 3 (b), the bypass flow path 43 has an arc shape with a cross section of approximately 1/4 circle, and is arranged concentrically with the venturi tube 22, as with the bypass flow path 31. Divided into four. By the series connection of the second crushing nozzle 23 and the first crushing nozzle 21, the bypass channel 43 communicates with the bypass channel 31 formed in the first crushing nozzle 21.

  And in the 2nd crushing nozzle 23, the step part 45 whose outer diameter is smaller than the edge part by the side of an entrance is formed in the outer peripheral part by the side of the exit 44, and O-ring is provided in the step part 45 by the outer peripheral part by the side of the exit 44. 46 is provided.

  Similar to the second crushing nozzle 23, the third crushing nozzle 25 has a substantially cylindrical shape, and has an outer diameter of the step 45 of the second crushing nozzle 23 at the end of the venturi tube 24 on the inlet 47 side. A recess 48 having a matching inner diameter is formed. The third crushing nozzle 25 is connected in series to the second crushing nozzle 23 by fitting the step 45 of the second crushing nozzle 23 inside the recess 48, and is also arranged in series with the first crushing nozzle 21. Yes. The O-ring 46 is in close contact with the inner peripheral surface of the recess 48 to enhance water tightness.

  A flange 49 having a generally rhombus shape in plan view, which is disposed opposite to the flange 39 of the second crushing nozzle 23, is provided at the end edge portion on the inlet side of the third crushing nozzle 25. The flange 49 protrudes outside the outer periphery of the third crushing nozzle 25, and a circular bolt hole 50 is formed at each of the upper and lower ends corresponding to the diagonal position. The bolt hole 50 is disposed to face the bolt hole 40 formed in the flange 39 of the second crushing nozzle 23.

  The flange 49 is in contact with the end face of the second crushing nozzle 23 on the stepped portion 45 side, thereby enabling positioning when the third crushing nozzle 25 is fitted into the second crushing nozzle 23.

  Further, in the third crushing nozzle 25, one Venturi tube 24 is disposed at the central portion thereof, and six Venturi tubes 24 are equidistantly disposed outside the Venturi tube 24 disposed at the central portion. The six Venturi tubes 24 are arranged at equal intervals. Further, on the outside of these six venturi tubes 24, twelve venturi tubes 24 are disposed at equal distances around the venturi tube 24 disposed in the center, and the twelve venturi tubes 24 are also disposed at equal intervals. ing. Further, on the outside of these 12 venturi tubes 24, 18 venturi tubes 24 are arranged at equal distances around the venturi tube 24, which is also arranged in the center, and the 18 venturi tubes 24 are also arranged at equal intervals. Has been. In this way, a total of 31 venturi tubes 24 are arranged in parallel with the third crushing nozzle 25. In all the venturi tubes 24, the tube diameter gradually decreases from the inlet 47 to the outlet 51 toward the intermediate constricted portion, and the tube diameter gradually increases from the constricted portion. By connecting the third crushing nozzle 25 and the second crushing nozzle 23 in series, the venturi pipe 24 communicates with the venturi pipe 22 of the second crushing nozzle 23 and also communicates with the venturi pipe 20 of the first crushing nozzle 21.

  Further, in the third crushing nozzle 25, a concave shape in which the pipe diameter is further expanded from the outside of the 18 venturi pipes 24 arranged at the outermost portion to the end portion on the outlet 51 side of the venturi pipe 24. A discharge port 52 having the above is formed.

  In the third crushing nozzle 25, a bypass channel 53 is formed. The inlet of the bypass flow path 53 is disposed further outside the 18 venturi pipes 24 arranged at the outermost part, extends toward the discharge port 52 of the third crushing nozzle 25, and the outlet 54 of the bypass flow path 53 is It is arranged outside the discharge port 52. As shown in FIG. 3C, the bypass channel 53 also has an arc shape with a cross section of approximately ¼, like the other bypass channels 31 and 43, and is concentric with the venturi tube 24. Arranged above and divided into four. By connecting the third crushing nozzle 25 in series with the second crushing nozzle 23, the bypass channel 53 communicates with the bypass channel 43 formed in the second crushing nozzle 23 and is formed in the first crushing nozzle 21. The bypass channel 31 also communicates.

  Further, in the third crushing nozzle 25, as shown in FIG. 3C, a flange 55 having the same shape as the flange 49 is provided on the outer periphery of the end on the discharge port 52 side. It is disposed so as to face the flange 49. Similarly to the flange 49, the bolt hole 56 is formed in the flange 55, and the bolt hole 56 is disposed to face the bolt hole 50. The first crushing nozzle in which the bolt 57 is screwed from the flange 55 side into the bolt holes 35, 40, 50, 56 of the flanges 34, 39, 49, 55 arranged so as to face each other and connected in series. 21, the second crushing nozzle 23 and the third crushing nozzle 25 are firmly connected and integrated as a gas introduction part 9.

  In such a gas introduction part 9, a rectifying plate 58 having a circular shape in plan view is provided between the outlet 30 of the first crushing nozzle 21 and the end face of the first recess 38 of the second crushing nozzle 23. The rectifying plate 58 is disposed to face the outlet 29 of the venturi tube 20 of the first crushing nozzle 21. The rectifying plate 58 is also provided between the outlet 44 of the second crushing nozzle 23 and the end face of the recess 48 of the third crushing nozzle 25, and the outlet 41 of each venturi tube 22 of the second crushing nozzle 23 and the first crushing plate 58. 2 is disposed opposite to the recess 42. These rectifying plates 58 are clamped by the first crushing nozzle 21 and the second crushing nozzle 23 by the connection as described above by the bolts 57, and are also clamped by the second crushing nozzle 23 and the third crushing nozzle 25. When the hot water 8 passes through such a rectifying plate 58, the hot water 8 is rectified and the turbulence of the flow is suppressed. And the coalescence of the bubbles of ozone gas in the hot water 8 is suppressed.

  The rectifying plate 58 is also provided on the discharge port 52 side of the third crushing nozzle 25 and is disposed to face the outlet 51 of each venturi tube 24 of the third crushing nozzle 25. The rectifying plate 58 provided on the discharge port 52 side is fitted into a groove-like recess provided on the inner peripheral portion of the third crushing nozzle 25 on the discharge port 52 side so that the third crushing nozzle 25 has the outer peripheral edge. Attached and fixed.

  In the gas introduction unit 9, the hot water 8 containing the bubbles of ozone gas that has passed through the first crushing nozzle 21 flows into the second crushing nozzle 23, and the venturi pipes 22 arranged in parallel are directed from the inlet 37 toward the outlet 41. Flowing. The bubbles in the hot water 8 are further crushed and the bubble diameter is further reduced by increasing the pressure once it is depressurized as it flows through the venturi tube 22.

  The hot water 8 containing bubbles of ozone gas with a fine bubble diameter once flows out into the second recess 42 and then between the outlet 44 of the second crushing nozzle 23 and the end face of the recess 48 of the third crushing nozzle 25. It passes through the rectifying plate 58 provided. Also at this time, the hot water 8 containing bubbles of ozone gas is rectified and the turbulence of the flow is suppressed. The coalescence of the bubbles in the hot water 8 is suppressed.

  Next, the hot water 8 containing bubbles of ozone gas flows into the third crushing nozzle 25 and flows from the inlet 47 to the outlet 51 through the respective venturi tubes 24 arranged in parallel. The bubbles of ozone gas in the hot water 8 are once reduced in pressure as they flow through the Venturi tube 24 and then increased, so that they are further crushed and refined to produce fine bubbles of about 0.1 to 1000 μm.

  The hot water 8 containing fine ozone gas bubbles passes through the rectifying plate 58 provided on the discharge port 52 side of the third crushing nozzle 25 and is discharged from the discharge port 52. The hot water 8 is further rectified, flow disturbance is suppressed, and the fine bubbles of ozone gas in the discharged hot water 8 are sufficiently suppressed from being coalesced, and the fine bubble diameter as described above is maintained.

  In the gas introduction unit 9, the venturi pipe 20 can be closed by sliding the flow path switching plate 32 in a direction perpendicular to the axis of the first crushing nozzle 21, and the flow path of the hot water 8 is bypassed. It can be switched to 31, 43, 53. In cases such as when a liquid containing fine bubbles of ozone gas is not necessarily required, the gas introduction unit 9 can discharge hot water 8 with less bubbles mixed by switching to the bypass flow paths 31, 43, and 53. .

  FIG. 4 is a configuration diagram schematically showing a second embodiment of the faucet device of the present invention. Regarding the second embodiment, the same reference numerals are given to the parts common to the first embodiment shown in FIG. 1, and the description thereof will be omitted below.

  In the water faucet device 59, a gas introduction part 9 such as exemplified in FIGS. 2 and 3 is provided at the downstream end 7 a of the water supply channel 7, and the discharge side of the hot water 8 in the gas introduction part 9 is also on the discharge end part 6. It faces the discharge port 5. Similarly to the downward flow path 19 of the faucet device 1, the downward flow path 60 is connected to the gas introduction section 9 of the gas supply path 16 so that ozone gas having functionality is changed from a high position to a low position. It is provided to flow. In the faucet device 59, since the gas introduction part 9 is arranged in the vertical direction, the downward flow path 60 also extends in the vertical direction along the gas introduction part 9, and toward the side part of the gas introduction part 9 in the middle thereof. It bends in a substantially L shape and is connected perpendicularly to the gas inlet 9.

  In such a faucet device 59, when the water supply path 7 is closed by the operation of the on-off valve 10 and the water supply of the hot water 8 is stopped, the hot water 8 may flow backward in the gas introduction section 9 even if the hot water 8 flows back. 8, the downward flow path 60 is unlikely to flow from the lower side to the upper side, and entry into the gas supply path 16 is suppressed. Further, since the gas introduction part 9 is arranged near the discharge port 5, it becomes easy to connect the downward flow path 60 to the gas introduction part 9, and the hot water 8 is upstream of the gas introduction part 9 when water supply is stopped. It becomes easy to remain in the water supply channel 7. For this reason, the certainty of the intrusion suppression of the hot water 8 into the gas supply path 16 by the downward flow path 60 is increased.

  The present invention is not limited by the above embodiment. Various aspects are possible about details, such as the kind of gas which has functionality generated in a gas generation part, the composition of a gas generation part and a gas introduction part, and the arrangement form of a downward channel.

DESCRIPTION OF SYMBOLS 1,59 Water faucet device 5 Discharge port 7 Water supply path 7a Downstream end 9 Gas introduction part 11 Gas generation part 16 Gas supply path 19, 60 Downward flow path

Claims (2)

A gas generating part that is disposed under the flange of the counter or sink and generates a functional gas, and a water supply channel whose downstream end faces the discharge port, on the downstream end side in the middle of this water supply channel A gas introduction section for mixing a functional gas into hot water is provided near the discharge port, and a gas supply path for supplying the functional gas generated by the gas generation section is provided on a flange of a counter or a sink . Standing up from the lower side, one end thereof is connected to the gas introduction part, and the other end is connected to the gas generation part, and the connection part to the gas introduction part of the gas supply path has functionality. A faucet device characterized in that a downward flow path is provided in which gas flows from a high position to a low position.   2. The faucet according to claim 1, wherein the gas introduction part is formed by connecting a first crushing nozzle, a second crushing nozzle, and a third crushing nozzle each having a venturi pipe therein in series. apparatus.

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