JP2013034801A - Shower apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shower apparatus capable of feeding a water mixed with air bubbles with a uniform and small air bubble diameter into a water sprinkling hole.SOLUTION: The shower apparatus includes: a throttle part provided on a downstream side of a water feeding part, for decreasing a flow path cross-section more than the water feeding part, and for jetting the passing water to the downstream side; an air mixing part provided on the down stream side of the throttle part, and formed with an opening 431 for mixing air into the water jetted though the throttle part to form an air bubble mixed water; and a water sprinkling part provided on the down stream side of the air mixing part, and formed with a plurality of the water sprinkling holes 443 for discharging the air bubble mixed water along the jetting direction of the water jetted from the throttle part. The throttle part is provided with a flat throttle flow path 421 so that a film-like water flow is formed in the direction along the water spraying face where water a plurality of water sprinkling holes 443 are arranged, and a film-like water flow dividing suppressing means for suppressing dividing before the film-like water flow jetted from the flat throttle flow path 421 reaches the air-liquid interface of the temporarily stored water in the air mixing part and air, is provided.

Description

  The present invention relates to a shower apparatus.

  In this technical field, a shower device is known in which air is mixed into water using the so-called ejector effect and discharged as bubble-containing water. According to the shower device that discharges such bubble-mixed water, the user can take a shower with a feeling of volume while having a small amount of water.

  As an example of such a shower device, a shower device as described in Patent Document 1 below has been proposed. The shower apparatus described in the following Patent Document 1 is one in which air is mixed into water after the water flows into the housing shell to form bubble mixed water, and this bubble mixed water is used for the entire front surface of the disk-shaped housing shell. In order to distribute to a plurality of sprinkling holes formed so as to be distributed, a turbulent flow generating extension is arranged in the direction of the bubble mixed water traveling, and the bubble mixed water collides with the turbulent flow generating extended direction. The air bubble mixed water is spread over the entire front surface of the housing shell.

  As another example of such a shower apparatus, a shower apparatus as described in Patent Document 2 below has also been proposed. The shower apparatus described in the following Patent Document 2 mixes air into water jetted through a throttle portion to form bubble mixed water, and a plurality of water sprays for discharging the bubble mixed water By arranging the holes along the injection direction of the water injected from the throttle part, the bubble mixed water collides with the inner wall of the shower head and reaches the position where the water spray holes are formed without changing the direction. I am doing so.

  In a shower apparatus such as the following Patent Document 1, since the bubble-mixed water that has grown to a non-uniform bubble diameter due to the collision of bubbles is supplied to the sprinkling holes, the water droplets formed after discharge are non-uniform. It becomes a water droplet of a particle size and hits a user. On the other hand, in the shower device as disclosed in Patent Document 2, the collision of bubbles is suppressed, and the bubble mixed water that keeps the small bubble diameter as uniform as possible is supplied to the water spray holes. The water droplets granulated in the diameter can be continuously landed on the user, and the user can feel a feeling of bathing with a feeling of volume like taking a large amount of rain.

JP-T-2006-509629 JP 2010-162532 A

  According to the shower device of the above-mentioned patent document 2, although the bubble mixed water in which the small bubble diameter is kept as uniform as possible can be supplied to the sprinkling holes, there is still room for improvement. Specifically, since the water flow ejected from the throttle is a linear water flow, when the linear water flow enters the gas-liquid interface, the water flow enters the gas-liquid interface at a point instead of a line. Convection occurs from all directions so as to surround the entry point around a linear water stream. In this way, when convection is generated from all directions so as to surround the entry point where the linear water flow enters, the convection is generated in the direction of colliding with each other. Therefore, when a linear water flow is rushed into the gas-liquid interface, the convections generated around the point of entry tend to collide with each other, which may cause bubble collisions and non-uniform enlargement of the bubbles. There is.

In light of the above-described problems, a first object of the present invention is to prevent convections generated when the water flow injected from the throttle portion enters the gas-liquid interface from colliding with each other.

  For this first object, the shower device conceived by the present inventors is provided with a water supply unit for supplying water and a downstream side of the water supply unit, and has a flow passage cross-sectional area larger than that of the water supply unit. A throttle part for reducing and injecting water that passes through to the downstream side, and provided in the downstream side of the throttle part, for mixing air into the water jetted through the throttle part to form bubble mixed water An air mixing portion in which an opening is formed, and a plurality of water spray holes provided on the downstream side of the air mixing portion for discharging the bubble mixed water are along the injection direction of the water injected from the throttle portion. And a water spray portion formed in a flat shape so as to form a film-like water flow that is a film-like water flow in a direction along a water spray surface on which the plurality of water spray holes are arranged. The throttle channel is provided. With such a configuration, it is possible to suppress the convections generated when the water flow injected from the throttle portion enters the gas-liquid interface from colliding with each other.

  In addition to the first object, the present invention further devised the following points. Specifically, the film-like water flow ejected from the flat throttle channel moves toward the air-liquid interface while being in contact with the air present in the air mixing part or the inner wall surface constituting the air mixing part. To do. That is, since the film-like water flow receives frictional resistance due to contact with air and the inner wall surface before reaching the gas-liquid interface, there is a possibility that a part of the velocity vector of the film-like water flow is disturbed. In addition, since surface tension is generated in the membranous water flow so as to reduce the surface area of the water flow, this surface tension may be a factor, and a part of the velocity vector of the membranous water flow may be disturbed. In order to maintain the state of the film-like water flow ejected from the throttle channel as a film-like water flow even at the gas-liquid interface position, the entire membrane-like water stream ejected from the throttle channel is maintained. Until the velocity vector reaches the gas-liquid interface, it is preferable that the velocity vectors are aligned as much as possible. That is, if a part of the velocity vector of the membrane water flow is disturbed, the membrane water flow may be divided before entering the gas-liquid interface. As described above, when the divided membranous water flow enters the gas-liquid interface, the convections collide with each other in the divided portion, and as a result, collision of bubbles occurs, resulting in uneven enlargement of bubbles. This is not preferable.

  As described above, the second object of the present invention is to maintain the state of the film-like water flow without being divided until the film-like water flow ejected from the throttle channel reaches the gas-liquid interface. It is to be able to rush into the interface.

The present invention is for solving the above-mentioned problems, and by allowing water bubbles mixed in with a more uniform and smaller bubble diameter to be supplied to the sprinkling holes, water droplets granulated into a more uniform and larger particle diameter are provided. The purpose is to allow the user to continuously land on the water.

In order to solve the above-mentioned problem, a shower apparatus according to the present invention is a shower apparatus that discharges bubble-containing water mixed with air, and is provided on a downstream side of the water supply section and a water supply section for supplying water. A throttle part for reducing the cross-sectional area of the flow channel relative to the water supply part, and jetting the passing water downstream, and water jetted through the throttle part provided downstream of the throttle part An air mixing portion in which an opening for forming air into the air mixing portion is formed, and a plurality of sprinkling holes provided on the downstream side of the air mixing portion for discharging the air mixing water, And a water spray portion formed along the direction of water sprayed from the throttle portion, and the throttle portion has a film-like water flow in a direction along the water spray surface on which the plurality of water spray holes are arranged. A flat throttle channel is provided so that a certain film-like water flow is formed. In the aeration unit, the film-like water flow ejected from the throttle channel is divided before reaching the gas-liquid interface between water and air temporarily stored in the aeration unit. The present invention is characterized in that a film-like water flow separation suppressing means is provided for suppressing the above.

  In the present invention, the water supplied from the water supply unit is jetted toward the air mixing unit through the throttle unit, and the water temporarily stored in the air mixing unit and the water spraying unit is discharged from the plurality of water spray holes of the water spraying unit. It is discharged outside. The water jetted through the throttle unit enters the gas-liquid interface between water and air temporarily stored in the air mixing unit with the air taken in from the opening formed in the air mixing unit. In this way, it becomes water mixed with bubbles, and is sprayed from a plurality of water spray holes in the water sprinkling part.

  In addition, since the plurality of water spray holes for discharging the bubble mixed water are formed along the direction of water sprayed from the throttle portion, the bubble mixed water is an inner wall constituting the air mixed portion and the water spray portion. Therefore, it is possible to reach the position where the water spray holes are formed with the substantially uniform bubble diameter. When the bubble-mixed water containing bubbles having a substantially uniform and small bubble diameter is discharged from the sprinkling holes in this way, it is sheared in a direction substantially perpendicular to the discharge direction and granulated substantially uniformly. Therefore, the water droplets granulated to a relatively large and uniform particle size are continuously landed on the user, and the user can enjoy a shower with a feeling of bathing like a large amount of rain. it can.

  Furthermore, in the present invention, in order to discharge the bubble-containing water containing bubbles with a more uniform and small bubble diameter from the water spray holes, the throttle portion has a film shape in a direction along the water spray surface on which the plurality of water spray holes are arranged. A flat throttle channel is provided so that a film-like water stream that is a water stream is formed. The water flow jetted from the flat throttle channel becomes a film-like water flow whose cross-sectional shape forms a flat shape and goes to the gas-liquid interface. When the film-like water flow enters the gas-liquid interface, in the region along the film-like water flow, the film-like water flow enters the gas-liquid interface along the direction extending in a substantially planar shape. It occurs so that the convection along it is lined up. When such convection occurs, the direction of convection is aligned on one side of the film-like water flow, and the rotation direction is opposite to that of the convection generated on the other side, but the vicinity of the gas-liquid interface where the film-like water flow enters Then, since the traveling directions of both convections are aligned, the possibility that adjacent convections collide with each other is reduced. When convections that do not easily collide with each other are generated in this way, the possibility of bubble enlargement due to bubble collision can be further reduced.

  Furthermore, in the present invention, there is provided a film-like water flow dividing suppression means for suppressing the film-like water flow injected from the throttle channel from being divided before reaching the gas-liquid interface. In a shower apparatus in which a plurality of water spray holes for discharging bubble-containing water as in the present invention are formed along the direction of water jetted from the throttle, the position of the gas-liquid interface is the throttle flow. It is formed at a position separated from the path. On the other hand, the membranous water flow ejected from the throttle channel moves toward the gas-liquid interface while being in contact with the air present in the air mixing portion or the inner wall surface constituting the air mixing portion. That is, since the film-like water flow is subjected to frictional resistance due to contact with air and the inner wall surface before reaching the gas-liquid interface, the velocity vector of the component forming the film-like water flow may be disturbed. In addition, since surface tension is generated in the membranous water flow so as to reduce the surface area of the water flow, this surface tension may be a factor, and a part of the velocity vector of the membranous water flow may be disturbed. In order to maintain the film-like water flow ejected from the throttle channel more reliably at the gas-liquid interface position, the membrane-like water stream ejected from the throttle channel Until the velocity vectors reach the gas-liquid interface, it is preferable that they are as much as possible as a whole. According to the present invention, since the film-like water flow separation suppressing means is provided, the velocity vector of the film-like water flow ejected from the throttle channel can be made uniform as a whole, and the film-like water flow can be more reliably formed with respect to the gas-liquid interface. It becomes possible to enter the water flow. Therefore, convective collision at the gas-liquid interface position can be reduced more reliably.

In the shower device according to the present invention, the membranous water flow separation suppressing means is a fine protrusion protruding into the aeration unit, and the fine protrusion transmits a velocity vector of the membranous water flow to the throttle channel. It is also preferable to correct the velocity vector component in the straight direction.

  In this preferred embodiment, since the velocity vector of the film-like water flow can be corrected in the straight direction by the fine protrusions protruding in the aeration unit, the disturbance of the velocity vector of the film-like water flow is corrected with a simple configuration. Therefore, it is possible to more reliably make the film-like water flow enter the gas-liquid interface.

In the shower device according to the present invention, it is also preferable that the downstream portion of the fine protrusion is formed so that a cross-sectional area in a direction orthogonal to the injection direction of the throttle channel decreases toward the downstream side.

  When a fine protrusion is provided to correct the velocity vector of the membranous water flow in the straight direction, the membranous water flow becomes a subdivided water flow partially around the fine protrusion. The partial flow partially divided by the fine protrusions needs to be joined again as a film-like water flow at a position near the downstream side of the fine protrusions. In this preferred embodiment, the downstream portion of the fine protrusion is formed so that the cross-sectional area in the direction orthogonal to the injection direction of the throttle channel decreases toward the downstream side. It can be guided downstream along the fine protrusions and smoothly merged at a position in the vicinity of the downstream side.

In the shower device according to the present invention, it is also preferable that the upstream portion of the fine protrusion is formed so that a cross-sectional area in a direction orthogonal to the injection direction of the throttle channel increases toward the downstream side.

  If a fine projection is provided to correct the velocity vector of the membranous water flow in the straight direction, the membranous water flow becomes a subdivided water flow when the periphery of the fine projection is partially viewed. When subdividing, if the membranous water stream collides with the fine projections in front, the membranous water flow will be greatly disturbed, making it difficult for the fine projections to rectify in the straight line direction, and also diverting at a position near the downstream side of the fine projections. May become difficult to join, and the state as a film-like water stream may not be maintained. In this preferred embodiment, the upstream portion of the fine protrusion is formed such that the cross-sectional area in the direction orthogonal to the injection direction of the throttle channel increases toward the downstream side, so that the membrane-like water flow injected from the throttle channel Since it is possible to suppress the flow from being greatly disturbed, the flow can be more surely straightened by the fine protrusions in the straight direction, and the diversion can be easily merged at a position near the downstream side of the fine protrusions. The state can be easily maintained.

Moreover, in the shower apparatus which concerns on this invention, it is also preferable that it is an elliptical shape from which the injection direction of the said throttle flow path becomes a long side, and the direction orthogonal to the injection direction of the said throttle part becomes a short side.

  In this preferred embodiment, since the cross-sectional area in the direction orthogonal to the injection direction of the throttle portion is small and the cross-sectional area of the throttle portion in the injection direction is large, the flow of the film-like water flow injected from the throttle portion Can be diverted without greatly disturbing. In addition, since a large distance for correcting the velocity vector of the membranous water flow in the straight direction can be ensured, the divided flow divided more stably can be rectified in the straight direction. Further, the diversion can be merged so that the state as the film-like water flow can be more reliably maintained at the position near the downstream side of the fine protrusion.

In the shower device according to the present invention, the throttle channel is configured to eject the film-like water flow radially, and the plurality of water spray holes are scattered in a region where the film-like water stream is jetted. It is also preferable that a plurality of the fine protrusions are provided at intervals along the injection direction of the throttle channel.

  In this preferable aspect, by providing a plurality of fine protrusions at intervals along the injection direction in the throttle portion, the velocity vector of the film-like water flow injected from the throttle portion is linearly moved (radial direction) with respect to the throttle portion. Rectified. With such a configuration, even in a shower apparatus that ejects a membranous water flow radially, the membranous water flow can be more reliably made to enter the gas-liquid interface position.

According to the present invention, by allowing bubble-mixed water having a more uniform and smaller bubble diameter to be supplied to the sprinkling holes, water droplets that have been granulated to have a larger and more uniform particle diameter are continuously landed on the user. Can be provided.

It is a figure which shows the shower apparatus which concerns on 1st embodiment of this invention, Comprising: (A) shows a top view, (B) shows a side view, (C) has shown the bottom view. It is sectional drawing which shows the AA cross section in (B) of FIG. It is the cross-sectional perspective view seen from the BB cross section side in (A) of FIG. It is C arrow line view in (B) of FIG. It is a figure which shows the cross section equivalent to the BB cross section in (A) of FIG. 1, Comprising: It is a figure which shows the flow of the water in a shower apparatus. It is a figure which shows the generation | occurrence | production state of the bubble mixing water in the shower apparatus which concerns on 1st embodiment of this invention. It is a figure which shows the generation | occurrence | production state of the bubble mixed water in the shower apparatus which concerns on a comparative example. It is a figure which shows the state of the gas-liquid interface which concerns on a comparative example. It is a figure which shows the state of the gas-liquid interface which concerns on 1st embodiment of this invention. It is a figure which expands and shows the flow method of the membranous water flow with respect to a microprotrusion. It is a figure which shows the shower apparatus which concerns on 2nd embodiment of this invention, Comprising: (A) shows a top view, (B) shows a side view, (C) has shown the bottom view. It is sectional drawing which shows the FF cross section in (A) of FIG. It is an expansion perspective sectional view which expands and shows the water injection piece vicinity shown in FIG. It is an expanded sectional view which expands and shows the water injection piece vicinity shown in FIG. It is a figure which shows the state of the gas-liquid interface which concerns on 2nd embodiment of this invention. It is a figure which shows the state of the gas-liquid interface which concerns on a comparative example. It is a figure which shows the modification of a microprotrusion.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  Next, the shower apparatus according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a view showing a shower apparatus F1 according to the first embodiment of the present invention. FIG. 1A shows a plan view, FIG. 8B shows a side view, and FIG. (C) is a bottom view.

  As shown in FIG. 1A, the shower apparatus F1 is mainly composed of a main body 2 having a substantially rectangular parallelepiped shape, and an opening 231 is formed in the upper surface 2a of the shower apparatus F1 (main body 2). As shown in FIG. 1B, a plurality of sprinkling protrusions 242 are provided on the lower surface 2b facing the upper surface 2a of the shower apparatus F1. Each watering projection 242 is formed with a watering hole 243. As shown in FIG. 1C, a plurality of sprinkling protrusions 242 are provided on the lower surface 2 b of the main body 2. In the case of this embodiment, 70 sprinkling protrusions 242 are formed in 7 rows × 10 columns.

  Subsequently, the shower apparatus F1 will be described with reference to FIG. 2 which is a cross-sectional view taken along the line CC in FIG. As shown in FIG. 2, the shower apparatus F <b> 1 includes a water supply unit 21, a throttle unit 22, an aeration unit 23, and a watering unit 24.

  The water supply unit 21 is a part for supplying water, and is a part for supplying water introduced from the water supply port 21 d to the throttle unit 22. A water supply means (water supply hose or the like) (not shown) can be connected to the water supply port 21d, and water supplied from the water supply means is supplied from the water supply part 21 to the throttle part 22. The water supply unit 21 has a side wall 21e and a side wall 21f as a part of the main body 2 along the water traveling direction, and the side wall 21e and the side wall 21f are arranged to be parallel to each other.

  The throttle part 22 is provided on the downstream side of the water supply part 21 and is a part for reducing the flow passage cross-sectional area of the water supply part 21 and injecting the passing water downstream. The throttle part 22 has a side wall 22e and a side wall 22f as a part of the main body 2 along the traveling direction of water, and the side wall 22e and the side wall 22f are arranged in parallel to each other.

  The throttle unit 22 is provided with a single throttle channel 221. The throttle channel 221 is formed in a flat shape and a slit shape so that the direction from the side wall 22e to the side wall 22f is the long side.

  The state of the throttle channel 221 is shown in FIG. FIG. 4 is a view taken in the direction of arrow C in FIG. As shown in FIG. 4, the throttle channel 221 has a flat shape and a slit shape so that the sides along the upper surface 2a and the lower surface 2b of the main body 2 are long sides and the sides along the side walls 22e and 22f are short sides. Is formed.

  Returning to FIG. 2, the description of other parts will be continued. The air mixing unit 23 is provided on the downstream side of the throttle unit 22, and is a portion where an opening 231 for mixing air into water jetted through the throttle unit 22 and forming bubble mixed water is formed. is there. The aeration unit 23 has side walls 23ea and 23eb and side walls 23fa and 23fb as a part of the main body 2 along the water traveling direction.

  The side wall 23ea and the side wall 23fa are arranged in parallel to each other. The side wall 23eb is a wall that is continuously provided on the downstream side of the side wall 23ea, and is disposed obliquely so as to widen the flow path toward the downstream side from the portion connected to the side wall 23ea. Similarly, the side wall 23fb is a wall continuously provided on the downstream side of the side wall 23fa, and is disposed obliquely so as to widen the flow path toward the downstream side from the portion connected to the side wall 23fa. ing. Further, the aeration unit 23 is provided with three fine protrusions 30 as a membranous water flow separation suppressing means with a gap in the long side direction of the throttle channel 221. The fine protrusion 30 is formed such that the upstream end thereof expands as the cross-sectional area in the direction orthogonal to the injection direction of the throttle channel 221 increases toward the downstream side, and the downstream end thereof is the throttle channel. The cross-sectional area in the direction orthogonal to the injection direction of 221 is formed so as to decrease as it goes downstream. Further, as a whole, the throttle channel 221 is formed in an elliptical shape in which the injection direction is a long side and the direction orthogonal to the injection direction is a short side.

  The water sprinkling part 24 is provided in the downstream of the air mixing part 23, and is the part in which the several watering hole 243 for discharging bubble mixing water is formed. The watering hole 243 is formed in the watering protrusion 242 (not explicitly shown in FIG. 2).

  As shown in FIG. 2, the side wall 21e constituting the water supply unit 21, the side wall 22e constituting the throttle unit 22, and the side wall 23ea constituting a part of the aeration unit 23 are arranged on the same plane. Has been. The side wall 23eb constituting the remaining part of the aeration unit 23 is disposed obliquely so as to face the outer side surface of the main body 2 and is connected to the side wall 24e constituting the water sprinkling part 24. Similarly, the side wall 21f constituting the water supply part 21, the side wall 22f constituting the throttle part 22, and the side wall 23fa constituting a part of the air mixing part 23 are arranged on the same plane. The side wall 23 fb that constitutes the remaining part of the aeration unit 23 is disposed obliquely toward the outer side surface of the main body 2, and is connected to the side wall 24 f that constitutes the water sprinkling part 24.

  Subsequently, the shower apparatus F1 will be described with reference to FIG. 3 which is a BB cross-sectional view of FIG. As FIG. 3 shows, the water supply part 21 has the side wall 21b and the side wall 21c which connect the side wall 21e and the side wall 21f. The side wall 21b and the side wall 21c are formed so that the length along the direction orthogonal to the direction in which water proceeds is longer than the side wall 21e and the side wall 21f. Therefore, the water supply part 21 is formed so that the cross section of the flow path is a flat shape. A front wall surface 21a is provided at a boundary portion between the water supply unit 21 and the throttle unit 22, and the side walls 21e, 21f, 21b, and 21c are connected to the front wall surface 21a. The front wall surface 21a includes a portion extending from the side wall 21b to the side wall 21c and a portion extending from the side wall 21c to the side wall 21b.

  A throttle portion 22 is provided in a region beyond the front wall surface 21a on the downstream side. The throttle portion 22 has a side wall 22b and a side wall 22c that connect the side wall 22e and the side wall 22f. The side wall 22b and the side wall 22c are formed so that the length along the direction orthogonal to the direction in which water proceeds is longer than the side wall 22e and the side wall 22f. Accordingly, the cross section of the flow passage surrounded by the side walls 22b, 22c, 22e, and 22f of the throttle portion 22 is formed to have a flat shape. A partition wall 22a is provided at a boundary portion between the throttle unit 22 and the air mixing unit 23, and the side walls 22e, 22f, 22b, and 22c are connected to the partition wall 22a. A flat and slit-shaped throttle channel 221 is formed in the partition wall 22a.

  An air mixing portion 23 is provided in a region beyond the partition wall 22a on the downstream side. The aeration unit 23 is a side wall 23b that connects the side walls 23ea, 23eb and the side walls 23fa, 23fb, a side wall that connects the side walls 23ea, 23eb and the side walls 23fa, 23fb, and is opposed to the side wall 23b and is relatively far from the side wall 23b. The side wall 23c, the side walls 23ea and 23eb, and the side wall 23fa are connected to the side walls 23fa and 23fb, and face the side wall 23b and are positioned relatively close to the side wall 23b. The side wall 23c is arranged on the water sprinkling part 24 side, and the side wall 23d is arranged on the narrowing part 22 side, and a step part 23g connecting the side wall 23c and the side wall 23d is formed. The side walls 23b, 23c, and 23d are formed so that the length along the direction orthogonal to the direction in which water proceeds is longer than the side walls 23ea and 23eb and the side walls 23fa and 23fb. Accordingly, the aeration unit 23 is formed so that the cross section of the flow path has a flat shape.

  The water sprinkling part 24 is provided in the area | region downstream from the side wall 23c. The water sprinkling part 24 is a side wall that connects the side wall 24e and the side wall 24f, and has a side wall 24b that forms the same surface as the side wall 23b of the air mixing part 23. Further, the water sprinkling part 24 has a side wall 24c that connects the side wall 24e and the side wall 24f and forms the same plane as the side wall 23c of the air mixing part 23. The side walls 24b, 24c, 24e, and 24f are connected to the back side wall 24a that is positioned to face the water supply port 21d and functions as the end of the flow path. The watering portion 24 is formed with a watering protrusion 242 that protrudes from the lower surface 2 b of the main body 2, and the watering protrusion 242 is formed with a watering hole 243.

  Next, the flow of water inside the shower device F1 will be described with reference to FIG. FIG. 5 is a diagram showing the BB cross section of FIG. 1A in a simplified manner, and is a diagram showing a state of water inside when water is supplied to the shower apparatus F1.

  As shown in FIG. 5, when water is supplied to the water supply unit 21 from a water supply means (not shown) at a predetermined pressure or higher, the water is injected downstream through a throttle channel 221 formed in the throttle unit 22. The film-like water flow WF, which is a film-like water flow jetted from the throttle channel 221 to the downstream air mixing section 23 and the water sprinkling section 24, is a side wall 23b, 23c, 23d, 23e, 23f of the air mixing section 23 and the water sprinkling section. In order not to interfere with the side walls 24b, 24c, 24d, and 24e of the 24, the spray water imaginary straight line BW1 is sprayed so as to extend to the sprinkling hole 243 located farthest. The jet water virtual straight line BW1 is a virtual straight line obtained by extending the jet direction of the water jetted from the throttle unit 22.

  When the film-like water flow is jetted from the throttle part 22 in this way, water temporarily accumulates in at least a part of the water sprinkling part 24 and the air mixing part 23, and a gas-liquid interface that is an interface between the accumulated water and air BW3 is formed. Accordingly, the film-like water flow jetted along the jet water imaginary straight line BW1 enters the water accumulated from the gas-liquid interface BW3, and the air present in the air mixing part 23 is entrained to generate the bubble mixed water BW. . The bubble-mixed water BW is divided into each water flow BW2 and discharged to the outside from each water spray hole 243. Since an opening 231 is formed in the aeration unit 23, the film-like water flow ejected along the ejection water virtual straight line BW1 enters the water accumulated from the gas-liquid interface BW3 and exists in the aeration unit 23. Even when air to be entrained is included, it is possible to maintain a state where air is always supplied.

  In the present embodiment, the throttle channel 221 of the throttle unit 22 is formed in a flat shape and a slit shape, and the bubble mixed water BW including fine bubbles is generated by ejecting the film-like water flow WF. FIG. 6 schematically shows a state in which the membranous water flow WF enters the gas-liquid interface BW3.

  As shown in FIG. 6, the water flow jetted from the flat and slit-shaped throttle channel 221 becomes a film-like water flow WF having a flat cross-sectional shape and heads toward the gas-liquid interface BW3. When the membranous water flow WF enters the gas-liquid interface BW3, in the region along the membranous water flow WF, the membranous water flow WF passes along the x direction, which is a direction extending in a substantially planar shape. It is generated so that the convection along the direction entering the BW3 is aligned.

  When such convection occurs, the direction of convection generation is aligned on one side of the film-like water stream WF (the front side of the film-like water stream WF in the figure) and the other side (the opposite side of the film-like water stream WF in the figure). Although the direction of rotation is opposite to that of the convection generated in step 1, the traveling directions of both convections are aligned in the vicinity of the gas-liquid interface BW3 where the film-like water flow WF enters, so that the possibility that adjacent convections collide with each other is reduced. In addition to the convection, convection toward both ends of the film-like water stream WF is generated at both ends of the film-like water stream WF. However, in the region excluding both ends of the film-like water stream WF, the film-like water stream WF is sandwiched between the film-like water streams WF. Since only the opposite convection is generated, the convection collision in the vicinity of the gas-liquid interface BW3 is reduced even when viewed as a whole.

  On the other hand, the case where linear jet water is made to enter the gas-liquid interface will be described with reference to FIG. FIG. 7 is a diagram schematically illustrating a state in which the linear water flow WFs enters the gas-liquid interface BW3.

  As shown in FIG. 7, when the linear water flow WFs enters the gas-liquid interface BW3, the water flow enters the gas-liquid interface BW3 not at a line but at the point of entry with respect to the linear water flow WFs. Convection occurs from all directions (all directions in the xz plane in the figure) so as to surround. Thus, when convection is generated from all directions so as to surround the entry point where the linear water flow WFs enters, the convection is generated in the direction of colliding with each other. Therefore, when the linear water flow WFs enters the gas-liquid interface BW3, convections generated around the entry point easily collide with each other, and bubble collision may occur, leading to bubble enlargement. .

  On the other hand, when the film-like water flow WF is generated as in the present embodiment shown in FIG. 6, convections that do not easily collide with each other across the intrusion line into which the film-like water flow WF enters are generated as described above. When convections that do not easily collide with each other occur in this way, the possibility of bubble enlargement due to bubble collision can be reduced. Bubbles in the bubble-containing water are miniaturized, and the flow of the bubble-containing water is less likely to collide, and the refined bubbles are maintained.

Further, in the present embodiment, a flat fine protrusion 30 is provided between the throttle channel 221 and the gas-liquid interface BW3. As shown in FIG. 8, the film-like water flow WF ejected from the flat throttle channel 221 is in contact with the air present in the air mixing part 23 or the inner wall surface constituting the air mixing part 23. It moves toward the liquid interface. That is, since the film-like water flow WF is subjected to frictional resistance due to contact with air and the inner wall surface before reaching the gas-liquid interface BW3, there is a possibility that a part of the velocity vector of the film-like water flow WF is disturbed. In addition, since surface tension is generated in the film-like water stream WF so as to reduce the surface area of the water stream, this surface tension may be a factor, and a part of the velocity vector of the film-like water stream WF may be disturbed. is there. If a part of the velocity vector of the membrane water flow WF is disturbed, the membrane water flow WF may be divided before entering the gas-liquid interface BW3. As described above, when the divided film-like water flow WF enters the gas-liquid interface BW3, the convections collide with each other in the divided portion. As a result, the bubbles collide with each other and the bubbles are unevenly enlarged. Will lead to a change.

On the other hand, in the present embodiment shown in FIG. 9, since a plurality of fine protrusions 30 are provided in the aeration unit 23, the velocity vector of the film-like water flow WF ejected from the throttle channel 221 is reduced by the fine protrusions 30. As a whole, it is possible to arrange the film-like water flow more reliably into the gas-liquid interface BW3.

  The action of the fine protrusions 30 will be described more specifically with reference to FIG. The film-like water flow WF ejected from the throttle channel first collides with the upstream end of the fine protrusion 30. At this time, the fine protrusion 30 is formed small so that the direction orthogonal to the injection direction of the throttle channel is 5 mm or less, and the cross-sectional area in the direction orthogonal to the injection direction of the throttle channel is on the downstream side. Since it forms so that it may expand as it goes, a membranous water flow will not be greatly disturbed by a collision, but will be smoothly led to the downstream side along the side wall surface of the upstream end of the fine protrusion. A side wall surface that is substantially parallel to the opening direction of the throttle channel is provided at the midstream portion of the fine protrusion so that the velocity vector of the film-like water flow can be corrected in the straight direction. Thus, even if the velocity vector of the film-like water flow ejected from the throttle channel is disturbed, the velocity vector of the film-like water flow can be realigned as a whole by the fine protrusions. The film-like water flow corrected in the straight direction is formed so that the downstream end portion of the fine protrusion is formed so that the cross-sectional area in the direction orthogonal to the injection direction of the throttle channel decreases toward the downstream side. It is possible to smoothly merge the divided flow divided with the protrusions in the vicinity of the downstream side. Since the subdivided flow flows to the downstream side while canceling each opposing velocity vector, the velocity vector of the film-like water flow is corrected in the straight direction as a whole.

  When the bubble-mixed water BW containing bubbles having a substantially uniform bubble diameter is supplied to the water spray holes 243 as described above, a bubble flow or slag flow may be formed in the water spray holes 243 and immediately after being discharged from the water spray holes 243. it can. When the bubble-mixed water BW that includes bubbles having a substantially uniform bubble diameter and is formed as a bubble flow or slag flow is discharged from the sprinkling holes 243, the discharge direction is substantially the same as that of the annular flow without being misted. It is sheared in an orthogonal direction and granulated substantially uniformly. Therefore, the water droplets granulated to a relatively large and uniform particle size are continuously landed on the user, and the user can enjoy a shower with a feeling of bathing like a large amount of rain. it can.

  Moreover, in the shower apparatus F1 which concerns on this embodiment, although the opening 231 is provided only in one side with respect to the membranous water flow WF, the opening 231 is put on one side and the other side across the membranous water flow WF. It is also preferable that at least one pair is provided so as to be positioned.

  In this embodiment, since the membranous water flow WF is ejected from the throttle channel 221, there is a tendency to suppress the movement of air sandwiching the membranous water flow WF although it has the effect of suppressing the bubble enlargement as described above. Therefore, by providing the openings 231 on both the one side and the other side with the membranous water flow WF in between, air can be supplied to both the membranous water flow WF evenly, and smooth generation of bubble-containing water BW is generated. Can contribute.

  The shower apparatus F1 according to the first embodiment described above has the main body 2 formed in a substantially rectangular parallelepiped shape, and the direction of water sprayed by the throttle portion 22 is aligned in the same direction. In view of the gist of the present invention, the embodiments are not limited to these, and the throttle channel is configured to eject a film-like water flow radially, and the plurality of water spray holes eject the film-like water flow. It is also possible to arrange so as to be scattered in a region to be arranged. The area where the water spray holes are arranged can be a circular area, a rectangular area, or various forms of areas. In the second embodiment of the present invention to be described subsequently, an example in which the main body is formed in a substantially disc shape and the direction of water sprayed by the throttle portion is radial will be described.

  The shower apparatus which is 2nd embodiment of this invention is demonstrated referring FIG. FIG. 11 is a view showing a shower apparatus F3 according to the second embodiment of the present invention. FIG. 11A shows a plan view, FIG. 11B shows a side view, and FIG. (C) is a bottom view. As shown in FIG. 11A, the shower device F3 is mainly constituted by a main body 4 having a substantially disk shape, and a water supply port 41d is formed on the upper surface 4a of the shower device F3 (main body 4). Yes.

  As shown in FIG. 11B, the outer shape of the main body 4 of the shower apparatus F3 is configured by a cavity 4A in which a water supply port 41d is formed and a shower plate 4B in which a water spray hole 443 is formed. ing. As shown in FIG. 11C, a plurality of water spray holes 443 are formed on the lower surface 4 b of the main body 4, and an opening 431 is also formed. In the case of this embodiment, the watering holes 443 are arranged radially with the opening 431 as the center.

  Subsequently, the shower device F3 will be described with reference to FIG. 12 which is a sectional view taken along line FF in FIG. As shown in FIG. 12, the shower apparatus F3 is configured by a cavity 4A, a shower plate 4B, and a water ejection piece 4C.

  The cavity 4A is a member that forms the outer shape of the main body 4 together with the shower plate 4B. A circular recess 4Ab is formed from the contact surface 4Aa opposite to the upper surface 4a of the main body 4 toward the upper surface 4a.

  A through hole 4Ac extending from the upper surface 4a to the recess 4Ab is formed in the vicinity of the center of the cavity 4A. By providing the through hole 4Ac in this way, the water supply portion 41 extending from the water supply port 41d to the throttle portion 42 is formed.

  The shower plate 4B is a member that forms the outer shape of the main body 4 together with the cavity 4A, and a plurality of water spray holes 443 are radially formed. The contact surface 4Ba opposite to the lower surface 4b of the region where the water sprinkling holes 443 are formed is configured to be the side wall 44c of the water sprinkling portion 44.

When the contact surface 4Ba of the shower plate 4B and the contact surface 4Aa of the cavity 4A are brought into contact with each other, a space is formed between the recess 4Ab of the cavity 4A, and this space is formed between the aeration unit 43 and the water sprinkling unit 44. It is comprised so that it may become. A part of the recess 4Ab is configured to be a side wall 44a of the water sprinkling part 44.

  Next, the water ejection piece 4C will be described with reference to FIG. FIG. 10 is an enlarged perspective sectional view of the vicinity of the water ejection piece 4C. As shown in FIG. 10, the water injection piece 4C has a hat shape with a flange 4Cb as a brim, and an air introduction protrusion at the end opposite to the flange 4Cb corresponding to the top of the hat shape. 4Ca is formed. An aperture projection 4Cd is formed on the side opposite to the air introduction projection 4Ca and in the vicinity of the center of the flange 4Cb.

  The throttle protrusion 4Cd constitutes a part of the throttle part 42, and forms a throttle channel 421 by facing the cavity 4A. Therefore, the throttle channel 421 forms a slit over the entire circumference so that radial and film-like water is ejected from the vicinity of the center of the cavity 4A.

  A plurality of air introduction holes 431a are formed around the aperture protrusion 4Cd over the entire circumference of the aperture protrusion 4Cd. The air introduction hole 431a communicates with an opening 431 formed in the air introduction protrusion 4Ca, and supplies air to the throttle channel 421.

  In the shower plate 4B, a circular recess 4Bc is formed from the contact surface 4Ba opposite to the lower surface 4b of the main body 4 toward the lower surface 4b. The recess 4Bc is provided at the center of the shower plate 4B so as to be located inside the watering holes 443 provided radially. A through hole 4Bb is formed from the bottom surface of the recess 4Bc to the lower surface 4b. The water ejection piece 4C is housed in the recess 4Bc.

  The air introduction protrusion 4Ca of the water ejection piece 4C is disposed so as to protrude outward from the through hole 4Bb. Therefore, the opening 431 formed in the air introduction protrusion 4Ca is configured to be able to take in outside air.

  As described above, by assembling the cavity 4A, the shower plate 4B, and the water ejection piece 4C, the shower device F3 includes the water supply unit 41, the throttle unit 42, the air mixing unit 43, and the watering unit 44. Configured as follows.

  The water supply unit 41 is a part for supplying water, and is a part for supplying water introduced from the water supply port 41d to the throttle unit 42. A water supply means (water supply hose or the like) (not shown) can be connected to the water supply port 41d, and water supplied from the water supply means is supplied from the water supply part 41 to the throttle part 42.

  The throttle part 42 is provided on the downstream side of the water supply part 41, and is a part for reducing the flow passage cross-sectional area of the water supply part 41 and injecting the passing water downstream. A single throttle channel 421 is formed in the throttle unit 42.

  The air mixing part 43 is provided on the downstream side of the throttle part 42, and is a part where an opening 431 is formed for mixing air into water jetted through the throttle part 42 to form bubble mixed water. is there. The aeration unit 43 is provided with six fine protrusions 30 that are radially spaced from the throttle channel 421 as membrane water flow separation suppression means. The fine protrusion 30 is formed such that the upstream end thereof expands as the cross-sectional area in the direction orthogonal to the radial direction with respect to the throttle channel 421 increases toward the downstream side, and the downstream end thereof is the throttle channel. The cross-sectional area in the direction orthogonal to the radiation direction with respect to 221 is formed so as to decrease toward the downstream side. Moreover, as a whole, it is formed in an elliptical shape in which the radial direction with respect to the throttle channel 221 is a long side and the direction orthogonal to the radial direction is a short side.

  The water sprinkling part 44 is provided in the downstream of the air mixing part 43, and is a part in which a plurality of water sprinkling holes 443 for discharging bubble mixed water are formed.

  In the shower device F3, when water is supplied from the water supply unit 41, a film-like water flow WFc is ejected from the throttle channel 421 of the throttle unit. FIG. 15 shows an injection state of the membranous water flow WFc. FIG. 13 is a diagram schematically showing an injection state of the film-like water flow WFc when the shower device F3 is viewed from the water supply unit 41 side. As shown in FIG. 13, the membranous water flow WFc is jetted over the entire circumference.

  By injecting the film-like water flow WFc in this way, convections that do not easily collide with each other across the entry line into which the film-like water flow WFc enters are generated as in the shower device F1 according to the first embodiment. When convections that do not easily collide with each other occur in this way, the possibility of bubble enlargement due to bubble collision can be reduced. Bubbles in the bubble-containing water are miniaturized, and the flow of the bubble-containing water is less likely to collide, and the refined bubbles are maintained.

Further, in the present embodiment, the flat fine protrusion 30 is provided between the throttle channel 421 and the gas-liquid interface BW3. As shown in FIG. 16, the radial film-like water flow WFc ejected from the throttle channel 421 formed in a slit shape over the entire circumference constitutes the air present in the aeration unit 43 or the aeration unit 43. It moves toward the gas-liquid interface while contacting the inner wall surface. That is, since the film-like water flow WFc is subjected to frictional resistance due to contact with air and the inner wall surface before reaching the gas-liquid interface BW3, there is a possibility that a part of the velocity vector of the film-like water flow WFc is disturbed. In addition, since surface tension is generated in the film-like water flow WFc so as to reduce the surface area of the water flow, this surface tension may be a factor, and a part of the velocity vector of the film-like water flow WFc may be disturbed. is there. In particular, in the embodiment in which the membranous water flow WFc is ejected radially as in the present embodiment, a slight disturbance at the time of injection is amplified as it progresses in the outer peripheral direction, and there is a risk of a large disturbance near the gas-liquid interface BW3. .
If a part of the velocity vector of the film-like water flow WFc is disturbed, the film-like water flow WFc may be divided before entering the gas-liquid interface BW3. As described above, when the divided film-like water flow WFc enters the gas-liquid interface BW3, convections collide with each other in the divided portion. As a result, collision of bubbles occurs, resulting in uneven enlargement of bubbles. Will lead to a change.

On the other hand, in the present embodiment shown in FIG. 15, since a plurality of fine protrusions 30 are provided in the aeration unit 23, the velocity of the radial membrane water flow WFc ejected from the throttle channel 421 by the fine protrusions 30. It is possible to align the vectors as a whole, and it is possible to more reliably enter a film-like water flow into the gas-liquid interface BW3.

  In this way, when bubble mixed water containing bubbles having a substantially uniform bubble diameter is supplied to the water spray holes 443, a bubble flow or a slag flow can be formed immediately after being discharged from the water spray holes 443 and the water spray holes 443. . In this way, when bubble mixed water formed as a bubble flow or slag flow containing bubbles having a substantially uniform bubble diameter is discharged from the sprinkling holes 443, it is substantially orthogonal to the discharge direction without being mist like an annular flow. It is sheared in the direction to be made and granulated substantially uniformly. Therefore, the water droplets granulated to a relatively large and uniform particle size are continuously landed on the user, and the user can enjoy a shower with a feeling of bathing like a large amount of rain. it can.

  The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In other words, those specific examples that have been appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements included in each of the specific examples described above and their arrangement, materials, conditions, shapes, sizes, and the like are not limited to those illustrated, but can be changed as appropriate. Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention. Further, the shape of the fine protrusion 30 is not limited to the first and second embodiments described above, and may be, for example, a new circular shape or a polygonal shape as shown in FIG. Those that exhibit effects are included in the scope of the present invention.

F1: Shower device 2: Main body 2a: Upper surface 2b: Lower surface 21: Water supply part 21a: Front wall surface 21b: Side wall 21c: Side wall 21d: Water supply port 21e: Side wall 21f: Side wall 22: Restriction part 22a: Partition wall 22b: Side wall 22c: Side wall 22e: Side wall 22f: Side wall 221: Throttle channel 23: Air mixing part 23b: Side wall 23c: Side wall 23d: Side wall 23ea: Side wall 23eb: Side wall 23fa: Side wall 23fb: Side wall 23g: Step part 231: Opening 24: Sprinkling part 24a : Side wall 24b: Side wall 24c: Side wall 24e: Side wall 24f: Side wall 242: Sprinkling protrusion 243: Sprinkling hole 30: Fine protrusion BW: Bubble mixed water BW1: Jet water virtual straight line BW2: Water flow BW3: Gas-liquid interface WF: Membrane water flow WFs: linear water flow F3: shower device 4: body 4A: cavity 4Aa: contact surface 4Ab: recess 4Ac: through hole 4B: shower Rate 4Ba: Contact surface 4Bb: Through hole 4Bc: Recess 4C: Water injection piece 4Ca: Air introduction protrusion 4Cb: Flange 4Cd: Restriction protrusion 4a: Upper surface 4b: Lower surface 41: Water supply part 41d: Water supply port 42: Restriction part 421: Restriction flow path 43: Air mixing part 43b: Side wall 43c: Side wall 431: Opening 431a: Air introduction hole 44: Sprinkling part 44a: Side wall 44b: Side wall 44c: Side wall 443: Sprinkling hole

Claims (6)

A shower device that discharges air mixed with air bubbles,
A water supply unit for supplying water;
A throttle part that is provided on the downstream side of the water supply part, reduces the flow passage cross-sectional area than the water supply part, and injects the passing water downstream;
An air mixing part provided on the downstream side of the throttle part, in which an opening is formed for mixing air into water jetted through the throttle part to form bubble mixed water;
A plurality of sprinkling holes provided on the downstream side of the aeration unit, for discharging the bubbling water, and formed along the injection direction of water injected from the throttle unit,
The throttle portion is provided with a flat throttle channel so that a film-like water flow is formed in a direction along the watering surface on which the plurality of watering holes are arranged.
In the air mixing part, the film-like water flow injected from the throttle channel is prevented from being divided before reaching the gas-liquid interface between water and air temporarily stored in the air mixing part. A shower apparatus, characterized in that a film-like water flow partitioning suppression means is provided. The membranous water flow separation suppressing means is a fine protrusion protruding into the aeration unit,
The shower apparatus according to claim 1, wherein the fine protrusions correct the velocity vector of the membranous water flow so as to be a velocity vector in a straight direction with respect to the throttle channel. The shower device according to claim 2, wherein the downstream portion of the fine protrusion is formed such that a cross-sectional area in a direction perpendicular to the injection direction of the throttle channel decreases toward the downstream side.   The shower device according to claim 3, wherein the upstream portion of the fine protrusion is formed such that a cross-sectional area in a direction orthogonal to the injection direction of the throttle channel increases toward the downstream side.   5. The shower device according to claim 4, wherein the fine protrusion has an elliptical shape in which an injection direction of the throttle channel is a long side and a direction orthogonal to the injection direction of the throttle part is a short side. The throttle channel is configured to eject the film-like water flow radially,
The plurality of water spray holes are arranged so as to be scattered in a region where a film-like water flow is jetted,
The shower apparatus according to claim 4, wherein a plurality of the fine protrusions are provided at intervals along the injection direction of the throttle channel.

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