JP2012245082A - Mist generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mist generator capable of generating a fine mist although a rotating substrate for generating mist has a small diameter so as to be small as a whole.SOLUTION: The mist generator includes, inside a body case 1, the rotating substrate rotationally driven by a motor 3; a tank 5 for storing liquid for generating a mist; and a liquid feeding means for feeding the rotating substrate 4 with the liquid stored in the tank 5. Annular collision wall rows 56 with collision walls 37 and liquid passages 47 alternately arranged are provided at least double in a radial direction in a state of surrounding the rotational center of the rotating substrate 4. The collision walls 37 of the outside collision wall row 56 are allowed to face the liquid passages 57 of the inside collision wall row 56 so that liquid surely collides with the collision walls 37 to create a mist. The thickness dimension T of the collision walls 37 in the radial direction of the rotating substrate 4 is set smaller than the width dimension L of the collision walls 37 to reduce the diameter of the rotating substrate 4.

Description

  The present invention relates to a mist generating apparatus that sends a liquid such as water or lotion into a fine mist. The mist generator can be used as a humidifier that moisturizes the skin, or as an inhaler that moistens the throat and oral cavity.

  The mist generating apparatus according to the present invention makes the liquid finer by splashing the liquid fed onto the rotating substrate with a centrifugal force and causing it to collide with a collision wall provided on the rotating substrate. A mist generating device is known, for example, from Patent Document 1. There, eight blades extending radially from the center and a number of baffle members are provided integrally with the disk between a pair of opposing disks, and when liquid is fed between the rotating disks, The liquid is bounced off by centrifugal force to be mist, further refined by colliding with the baffle member, and discharged outward from between the disks.

  A similar mist generator is also disclosed in Patent Document 2. There, an annular wall having a large number of guide paths extending in the radial direction and a large number of rollers facing the exit of the guide paths are provided between a pair of upper and lower disks. When the liquid is fed between a pair of rotating disks, the liquid is splashed by centrifugal force to be misted, and the liquid is further refined by colliding with the rollers through the guide path.

International Publication No. 98/05432 Pamphlet (Page 15, Lines 5-19, Figure 8) Japanese Utility Model Sho 62-179052 microfilm (page 8, lines 6-8, Fig. 2)

  In the mist generating device of Patent Document 1, since the baffle members are arranged only sparsely, the liquid may jump out of the facing space without colliding with the baffle member, and the liquid cannot be sufficiently miniaturized. In that respect, when the roller is arranged facing the exit of the guide path as in the mist generating device of Patent Document 2, the liquid can be reliably collided with the roller and miniaturized. However, in the mist generating device of Patent Document 2, it is inevitable that the diameter of the disk increases to form an annular wall having a large radial dimension, and the entire device increases in size.

  An object of the present invention is to provide a mist generating device capable of generating a fine mist despite the fact that the rotating substrate for generating the mist has a small diameter and is small as a whole.

  In the main body case 1, a rotating substrate 4 that is driven to rotate by a motor 3, a tank 5 that stores a liquid for generating mist, and a liquid that feeds the liquid stored in the tank 5 to the rotating substrate 4. An annular collision wall row 56 in which collision walls 37 and liquid passages 57 are alternately arranged is provided at least twice in the radial direction so as to surround the rotation center of the rotating substrate 4. The present invention relates to a mist generator. Each collision wall row 56 is arranged in a state where the collision wall 37 of the outer collision wall row 56 faces the liquid passage 57 of the inner collision wall row 56. Therefore, the thickness dimension T of the collision wall 37 in the radial direction of the rotating substrate 4 is set to be smaller than the width dimension L of the collision wall 37.

  Collision wall rows 56 are provided in multiple directions in the radial direction of the rotating substrate 4. The number of the liquid passages 57 in the collision wall row 56 located on the radially outer side is set larger than the number of the liquid passages 57 in the collision wall row 56 located on the radially inner side. Note that “multiple” in the collision wall row 56 of the present invention means “triple or more”.

  The narrowest passage width l of the liquid passage 57 is set to be smaller than the width dimension L of the collision wall 37. The thickness dimension T of the collision wall 37 is set smaller than the passage width l of the liquid passage 57.

  A large number of collision walls 37 are erected on the surface of the flat base portion 36 to constitute the rotating substrate 4. The protrusion dimension H of the collision wall 37 is set to be smaller than the thickness dimension H1 of the base portion 36.

  The height dimension H of the collision wall 37 is set smaller than the thickness dimension T.

  The inner surface 58 of the collision wall 37 facing the center of the rotating substrate 4 is configured by an inwardly convex curved surface having a smaller curvature than the outer peripheral edge of the rotating substrate 4 or a flat surface.

  The passage width of the liquid passage 57 is formed narrower toward the outer peripheral side of the rotating substrate 4.

  Of the outer surface 59 of the collision wall 37, at least a peripheral surface portion facing the liquid passage 57 is formed in an indented shape.

  The rotating substrate 4 and the top plate 38 that covers the upper surface of the collision wall 37 are engaged with the locking projections 51 protruding from the support base 32, respectively. Integrate the person so that they can rotate together.

  A ring-shaped introduction body 44 is provided at the center of the top plate 38, and the liquid supply pipe 28 constituting the liquid feeding means is inserted into the introduction body 44. On the inner surface of the introduction body 44, a guide surface 47 having a taper shape extending downward is formed.

  The liquid supply port 45 at the lower end of the liquid supply pipe 28 is disposed in a region between the guide surface 47 and the base portion 36 of the rotating substrate 4.

  A flow promoting protrusion 46 is provided on the upper surface of the rotating substrate 4 facing the liquid supply port 45. The upper end portion of the flow promoting protrusion 46 is disposed above the opening surface of the liquid supply port 45.

  On the upper surface of the support base 32 facing the periphery of the outermost collision wall row 56, a wing piece 70 for forcibly sending the surrounding air and mist is provided.

  The blade piece 70 includes a blade surface 71 that is inclined downward toward the lower side in the rotational direction of the support base 32.

  A wind guide tube 72 is provided on the support base 32 so as to surround the outer peripheral surface of the rotation region of the blade piece 70.

  A vent 73 for introducing air is formed in the support base 32 facing the blade surface 71 of the blade piece 70 in a vertically penetrating manner.

  A primary electroforming step for forming the flat primary electroforming layer 65 on the rotary substrate 4 and a secondary electroforming for forming a secondary electroforming layer 67 corresponding to the collision wall 37 on the surface of the primary electroforming layer 65. It is produced through a process.

  The liquid feeding means includes a pump motor 26 different from the main motor 3 for the rotating substrate 4 and a liquid feeding pump 23 driven by the motor 26. The control unit 10 provided in the main body case 1 is configured as follows. After a predetermined time has elapsed since the main motor 3 was activated at the start of use, the pump motor 26 is activated. After a predetermined time has elapsed since the pump motor 26 was stopped at the end of use, the main motor 3 is stopped.

  In the present invention, at least two annular collision wall rows 56 in which the collision walls 37 and the liquid passages 57 are alternately arranged are provided, and the collision wall 37 of the outer collision wall row 56 is replaced with the liquid of the inner collision wall row 56. Since it is opposed to the passage 57, the liquid can collide with the collision wall 37 at least once before the liquid jumps out of the outermost collision wall row 56, so that the liquid can be surely miniaturized. Can do. Furthermore, in the present invention, since the thickness dimension T of the collision wall 37 in the radial direction of the rotating substrate 4 is set smaller than the width dimension L of the collision wall 37, the diameter of the rotating substrate 4 can be reduced and the mist generating device can be reduced. The whole can be downsized. Thereby, although the rotary substrate 4 for generating mist has a small diameter and is small as a whole, a mist generator capable of generating fine mist can be obtained.

  When the collision wall rows 56 are provided in multiple (three or more) in the radial direction of the rotating substrate 4 and many liquid passages 57 are provided in the outer collision wall row 56, the liquid traveling direction is diversified, and the liquid is It can be well dispersed and can promote the miniaturization of the liquid. In addition, the liquid can be repeatedly collided against the collision wall 37 facing the liquid passage 57, so that the mist can be further refined.

  When the passage width l of the narrowest portion of the liquid passage 57 is set smaller than the width dimension L of the collision wall 37, more than half of the entire length of the collision wall row 56 is constituted by the collision wall 37, and the liquid is applied to the collision wall 37. The frequency of collision can be increased, and liquid miniaturization can be promoted. Further, when the thickness dimension T of the collision wall 37 is set smaller than the passage width l, the diameter of the rotating substrate 4 can be further reduced, and the entire mist generating device can be further reduced in size.

  When the protrusion dimension H of the collision wall 37 is set smaller than the thickness dimension H1 of the base portion 36, an increase in the thickness dimension of the entire rotating substrate 4 due to the provision of the collision wall 37 is suppressed, and the mist generator is downsized. Can be realized.

  When the protrusion dimension H of the collision wall 37 is set to be smaller than the thickness dimension T, an increase in the thickness dimension of the entire rotating substrate 4 due to the provision of the collision wall 37 can be suppressed, and the mist generator can be downsized. it can.

  If the inner surface 58 of the collision wall 37 that faces the center of the rotating substrate 4 is formed of an inwardly convex curved surface or flat surface having a smaller curvature than the outer peripheral edge of the rotating substrate 4, an inwardly convex shape having a large curvature as in Patent Document 2. Compared to the case where the inner surface is formed of a curved surface, a liquid pulverizing effect can be improved and fine mist can be generated. Further, as compared with the case where the inner surface is formed of an outer concave curved surface, the liquid that has collided with the inner surface 58 can be smoothly guided to the liquid passages 57 on both sides thereof, and the liquid that has collided with the inner surface 58 can reach the surface of the inner surface 58. The remaining can be eliminated.

  When the passage width of the liquid passage 57 is formed narrower toward the outer peripheral side of the rotating substrate 4, the liquid flowing through the liquid passage 57 toward the outer peripheral side can be converged to increase the flow velocity. Therefore, the pulverization effect when the liquid that has passed through the liquid passage 57 collides with the collision wall 37 on the outer peripheral side can be improved, and fine mist can be generated.

  By forming at least the peripheral surface portion facing the liquid passage 57 in the outer surface 59 of the collision wall 37 in an indented shape, it is possible to suppress the liquid flowing through the liquid passage 57 from flowing around to the surface side of the outer surface 59. This is because it is necessary to counter the centrifugal force in order for the liquid to go around to the surface side of the outer surface 59. Accordingly, drainage at the outlet of the liquid passage 57 can be improved, and the liquid can be efficiently collided with the collision wall 37 facing the outlet of the liquid passage 57, thereby promoting the refinement of the liquid. Furthermore, on the lower side in the rotational direction of the outer surface 59, the airflow flowing between the collision wall rows is guided outward to improve drainage at the outlet of the liquid passage 57, and a liquid pool is generated on the surface of the outer surface 59. Can be prevented.

  Providing the top plate 38 that covers the upper surface of the collision wall 37 can reliably avoid a situation in which the liquid splashes obliquely upward and does not collide with the collision wall 37. In other words, the liquid can be reliably made to collide with the collision wall 37 and be miniaturized. Further, when the rotary substrate 4 and the top plate 38 are engaged with the locking projections 51 protruding from the support base 32, the structure for fixing the rotary substrate 4 and the top plate 38 to the support base 32 can be simplified. In addition, since the three members 4, 38, and 32 are mechanically coupled through the locking projections 51, when the liquid containing the cosmetic component is misted, the coupling structure does not deteriorate with the cosmetic component, The state in which the three parties 4, 38 and 32 are firmly integrated can be maintained for a long time.

  When the ring-shaped introduction body 44 is provided on the top plate 38 and the guide surface 47 is formed to be tapered downward on the inner surface of the introduction body 44, the liquid adhering to the guide surface 47 receives an outward centrifugal force and guides it. Guided downward along the surface 47, it jumps off between the rotating substrate 4 and the top plate 38. As described above, when the guide surface 47 having a taper shape that extends downward is provided, the liquid can be smoothly guided between the rotary substrate 4 and the top plate 38.

  When the liquid supply port 45 at the lower end of the liquid supply pipe 28 is disposed in a region between the guide surface 47 and the base portion 36 of the rotating substrate 4, the liquid fed from the liquid supply port 45 is located above the guide surface 47. The liquid can be reliably guided between the rotating substrate 4 and the top plate 38 by reliably preventing leakage. The region between the guide surface 47 and the base portion 36 includes a region inside the introduction body 44 surrounded by the guide surface 47.

  When the flow promotion protrusion 46 is provided on the upper surface of the rotating substrate 4 facing the liquid supply port 45 and the upper end portion of the flow promotion protrusion 46 is disposed above the opening surface of the liquid supply port 45, the liquid supply port 45 is reached. The liquid can be actively guided to flow down along the flow promotion protrusion 46. That is, the flow promoting protrusions 46 prevent the liquid from attempting to form droplets due to surface tension, and promote a downward flow of the liquid to form a continuous flow. Therefore, it is possible to prevent liquid droplets from intermittently falling on the upper surface of the rotating substrate 4, and to continuously supply the liquid to the rotating substrate 4 in a stable state, thereby stabilizing the amount of liquid on the upper surface of the rotating substrate 4. .

  When a blade piece 70 for forcibly sending ambient air and mist is provided on the upper surface of the support base 32 facing the periphery of the outermost collision wall row 56, it passes through the liquid passage 57 of the outermost collision wall row 56. The mist splashed outward in the radial direction can be reliably sent out of the main body case 1.

  When the wing piece 70 includes the wing surface 71 inclined downward toward the lower side in the rotation direction of the support base 32, an upward air flow along the wing surface 71 can be smoothly formed, and mist can be sent out efficiently.

  Providing the air guide tube 72 that surrounds the outer peripheral surface of the rotation region of the blade piece 70 ensures that the generated airflow is directed upward and the mist can be sent upward.

  When a vent 73 for introducing air is formed in the support base 32 facing the blade surface 71 of the blade piece 70 in a vertically penetrating manner, air is supplied to the blade piece 70 from below to send the mist upward. The airflow can be formed smoothly.

  Through a primary electroforming step of forming a flat primary electroforming layer 65 and a secondary electroforming step of forming a secondary electroforming layer 67 corresponding to the collision wall 37 on the surface of the primary electroforming layer 65, The rotating substrate 4 can be manufactured. According to this, it is possible to improve the accuracy of the position and shape of the collision wall 37, and thus it is possible to obtain the rotating substrate 4 that can reliably generate a high-quality mist.

  At the start of use, when the main motor 3 is activated in advance with respect to the pump motor 26 and the rotary substrate 4 is driven before the liquid feed pump 23, even if liquid remains on the rotary substrate 4, Since the remaining liquid can be misted until the liquid is fed from the liquid feeding pump 23, it is possible to prevent the formation of a large-diameter mist at the start of use of the mist generating device. Further, when the use is finished, the main motor 3 is stopped with a delay with respect to the pump motor 26, and when the rotary substrate 4 is stopped after the liquid feed pump 23 is stopped, the liquid fed from the liquid feed pump 23 is transferred to the rotary substrate 4. Since it can be released as a mist without leaving it on, it can be solved that the liquid is left as it is. Therefore, it is possible to prevent a large diameter mist from being formed when the mist generator is used next time.

It is a vertical side view of the principal part of the mist generator which concerns on the Example of this invention. It is a vertical side view which shows schematic structure of a mist generator. It is a figure which expands and shows a part of FIG. It is a figure which expands and shows a part of FIG. It is a top view of a rotation board. It is a figure which expands and shows a part of FIG. It is CC sectional view taken on the line in FIG. It is sectional drawing which shows the outline of the manufacturing method of a rotating substrate. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. It is a timing chart which shows operation | movement of a motor. It is explanatory drawing which shows the usage example of a mist generator. It is a top view of the collision wall of the rotation board concerning another example of the present invention. It is a vertical side view of the principal part of the mist generator which concerns on another Example of this invention. It is a vertical side view of the principal part of the mist generator which concerns on another Example of this invention. It is a vertical side view of the principal part of the mist generator which concerns on another Example of this invention. It is a vertical side view of the principal part of the mist generator which concerns on another Example of this invention. It is a figure which expands and shows a part of FIG. It is a vertical side view of the mist generator which concerns on another Example of this invention. It is a vertical side view of the mist generator which concerns on another Example of this invention.

(Example) FIG. 1 thru | or FIG. 12 shows the Example of the mist generator based on this invention. In FIG. 2, reference numeral 1 denotes a main body case, and reference numeral 2 denotes a cap that is attached to and detached from the main body case 1. Inside the main body case 1, a disk-shaped rotating substrate 4 that is rotationally driven by a main motor (motor) 3, a tank 5 that stores water (liquid) for generating mist, and water stored in the tank 5 are rotated. A liquid feeding means for feeding to the substrate 4 is disposed. The main motor 3 is activated by turning on a switch button 8 provided on the outer surface of the main body case 1. Reference numeral 9 denotes a battery, and reference numeral 10 denotes a control unit of the mist generator. The battery 9 supplies power to the main motor 3 and the control unit 10 and a pump motor 26 described later.

  The rotating substrate 4 is driven to rotate by the main motor 3 to splash the water fed from the liquid feeding means to generate fine mist, details of which will be described later. In the upper part of the main body case 1, a hood 14 that prevents the fine mist generated on the rotating substrate 4 from being scattered around, and a nozzle that sends the air current containing the fine mist guided by the hood 14 in an obliquely upward direction. 15 is provided. The hood 14 also serves as a wind guide tube for an air flow generated by a blade piece 70 described later, and the rotating substrate 4 is disposed on the lower half side thereof. On the inner surface of the hood 14 facing the center of the upper surface of the rotating substrate 4, a support wall 16 that supports a water discharge passage 25 to be described later and four radiation frames 17 that support the wall 16 are provided. Both 16 and 17 are formed integrally with the hood 14.

  The tank 5 is detachably attached to the loading portion 20 at the lower part of the main body case 1, and a water inlet / outlet 21 is opened at the upper center of the tank 5. Reference numeral 22 denotes a seal ring. The amount of water when the tank 5 is full is 2 ml. The liquid feeding means includes a liquid feeding pump 23 disposed above the inlet / outlet 21, a pump motor 26 that drives the liquid feeding pump 23, and a suction that extends from the suction port of the liquid feeding pump 23 toward the inner bottom of the tank 5. The passage 24 and the discharge passage 25 disposed between the discharge port of the liquid feed pump 23 and the rotary substrate 4 are configured. The discharge passage 25 includes a liquid supply tube 27 disposed from the discharge port of the liquid supply pump 23 to the support wall 16 of the hood 14, and a liquid supply pipe 28 that communicates with the liquid supply tube 27 and extends downward toward the rotating substrate 4. It consists of. The liquid feed pump 23 is a low-pressure gear pump and delivers 0.01 ml of water to the discharge passage 25 per second.

  As shown in FIG. 1, a circular dish-like support base 32 that is rotationally driven by the main motor 3 is disposed above the main motor 3, and a connecting boss 33 provided on the lower surface of the support base 32 is connected to the main motor 3. It is connected to the output shaft 34 of the motor 3. The rotating substrate 4 is fixed to the center of the inner surface of the support base 32. As shown in FIG. 5, the rotating substrate 4 includes a disk-shaped base portion 36 and a large number of collision walls 37 erected on the upper surface of the base portion 36. When water is supplied to the upper surface of the base portion 36 and the rotary substrate 4 is rotationally driven, the water can be spun off by the centrifugal force and collided with the collision wall 37 to make the water fine and mist. Reference numeral 38 is a top plate that covers the upper surface of the collision wall 37. The top plate 38 is formed in a disk shape having the same diameter as the base portion 36 and is supported on the upper surface of each collision wall 37. The rotating substrate 4 and the top plate 38 are made of a metal such as nickel.

  As shown in FIG. 3, a circular opening 43 is formed at the center of the top plate 38, and a ring-shaped introduction body 44 is attached to the peripheral edge of the opening 43. The introduction body 44 is made of a resin molded product, and is produced, for example, by performing outsert molding on the opening 43 of the top plate 38. A liquid supply pipe 28 for feeding water to the rotary substrate 4 is inserted into the introduction body 44, and a liquid supply port 45 at the lower end of the liquid supply pipe 28 is inserted into the base portion of the rotary board 4 through a slight gap. 36 is in close proximity. At the center of the upper surface of the base portion 36 facing the liquid supply port 45, a cylindrical flow promotion protrusion 46 protrudes upward, and the upper end portion of the flow promotion protrusion 46 is above the opening surface of the liquid supply port 45. Is arranged. The flow promotion protrusion 46 actively flows down and guides the water that has reached the liquid supply port 45 to form a continuous water flow that flows into the upper surface of the base portion 36. The protrusion dimensions of the flow promoting protrusion 46 and the collision wall 37 are the same.

  On the inner peripheral surface of the introduction body 44, a downwardly expanding tapered guide surface 47 is formed. A liquid supply port 45 of the liquid supply pipe 28 is disposed below the lower end of the guide surface 47. The water adhering to the guide surface 47 receives an outward centrifugal force, is guided downward along the guide surface 47, and is splashed off toward the space between the rotating substrate 4 and the top plate 38.

  As shown in FIG. 4, the rotary substrate 4 and the top plate 38 are fixed to the support base 32 via locking protrusions 51 erected on the inner surface of the support base 32. Specifically, through holes 52 and 53 corresponding to the locking projections 51 are formed in the rotary substrate 4 and the top plate 38, respectively, and the upper ends of the locking projections 51 inserted into the through holes 52 and 53 are heat staked. Both plates 4 and 38 are fixed to the support base 32. The locking projections 51 are provided at three locations on the inner surface of the support base 32 (see FIG. 9).

  As shown in FIG. 5, the collision wall 37 is provided on the entire upper surface excluding the vicinity of the center of the base portion 36, and is arranged at predetermined intervals in the circumferential direction of the base portion 36 to form an annular collision wall row 56. ing. Between the adjacent collision walls 37 in the collision wall row 56, a liquid passage 57 through which the liquid splashed by the centrifugal force passes is formed. The collision wall rows 56 may be provided at least twice in the radial direction of the rotating substrate 4. However, it is preferable to provide the collision wall rows 56 in multiples (three or more) because the water can be further refined. In the present embodiment, the collision wall rows 56 are provided in ten layers, and most of the collision walls 37 of the outer collision wall row 56 are opposed to the liquid passages 57 of the inner collision wall row 56.

  Specifically, the first collision wall row 56 (first collision wall row) from the inside is constituted by 16 collision walls 37 and liquid passages 57. The second collision wall row 56 (second collision wall row) from the inside is also composed of sixteen collision walls 37 and liquid passages 57. Each collision wall 37 of the second collision wall row is a first collision wall. It arrange | positions so that the exit of the liquid passage 57 of a row | line | column may be faced. According to this, the water fed to the center of the rotating substrate 4 and splashed off by the centrifugal force always collides with the collision wall 37 constituting the first collision wall row or the second collision wall row.

  The third collision wall row 56 (third collision wall row) from the inside is composed of more collision walls 37 and liquid passages 57 than the second collision wall row. Similarly, the fourth to tenth collision wall rows outside the third collision wall row are also configured with more collision walls 37 and liquid passages 57 than the collision wall row 56 located radially inside. Thus, if many liquid passages 57 are provided in the collision wall row 56 on the outer peripheral side, the water traveling direction can be diversified and water can be dispersed so as to spread over the entire surface of the rotating substrate 4. Can be refined.

  The collision wall 37 that faces the outlet of each liquid passage 57 in the first collision wall row does not have to be the collision wall 37 in the second collision wall row, and the collision wall 37 in the collision wall row 56 on the outer peripheral side thereof. It may be. If any of the collision walls 37 of the second to tenth collision wall rows is exposed to the outlet of each liquid passage 57 of the first collision wall row, water will jump out of the outermost collision wall row 56. In the meantime, water can collide with the collision wall 37 at least once and can be refined.

  As shown in FIG. 6, the collision wall 37 includes an inner surface 58 that faces the center of the rotating substrate 4, an outer surface 59 that faces the radially outer side of the rotating substrate 4, and a pair of side surfaces 60 that connect the inner surface 58 and the outer surface 59. The outer surface 59 is formed in a substantially trapezoidal column shape longer than the inner surface 58. The water splashed by the centrifugal force collides with the inner surface 58 and is crushed. The inner surface 58 is formed of a curved surface that swells slightly inward to improve the water crushing effect. The curved surface is symmetric with respect to the radial line of the rotating substrate 4 passing through the center of the curved surface. Further, the curvature radius R2 of the inner surface 58 is set sufficiently larger than the curvature radius (radius of the rotation substrate 4) R1 of the outer peripheral edge of the rotation substrate 4. The outer surface 59 and the side surface 60 are formed as flat surfaces. The passage width of the liquid passage 57 formed between the side surfaces 60 of the adjacent collision walls 37 is formed narrower toward the outer peripheral side of the rotating substrate 4.

  The passage width l at the outlet of the liquid passage 57 is set smaller than the width dimension L of the collision wall 37 (width dimension of the outer surface 59). Further, the thickness dimension T of the collision wall 37 in the radial direction of the rotating substrate 4 is set smaller than the passage width l. That is, T <l <L. When the thickness dimension T of the collision wall 37 is set to be small, the diameter of the rotating substrate 4 can be reduced and the entire mist generator can be downsized. As shown in FIG. 7, the protruding dimension H of the collision wall 37 is set smaller than the thickness dimension H1 of the base portion 36 and the thickness dimension T of the collision wall 37. If the protrusion dimension H of the collision wall 37 is set small, the vertical dimension of the entire rotating substrate 4 can be reduced, and the mist generator can be downsized.

  As shown in FIG. 8, the rotating substrate 4 is manufactured through a primary electroforming process and a secondary electroforming process. In the primary electroforming process, a primary pattern resist corresponding to the shape of the base portion 36 is formed on the surface of the conductive base 64, and then the base 64 is placed in an electroforming tank and covered with the primary pattern resist. Electrodeposited metal is electroformed on the surface of the mother die 64 which is not formed, and a primary electroformed layer 65 corresponding to the base portion 36 is formed. Next, the primary pattern resist is removed, and the surface of the primary electroformed layer 65 is polished. The primary pattern resist is formed, for example, by forming a photosensitive resin layer on the surface of the mother die 64, attaching a pattern film to the surface, and then exposing and removing the exposed portion. A secondary pattern resist 66 to be described later can also be formed by the same method.

  In the secondary electroforming process, a secondary pattern resist 66 corresponding to the shape of the collision wall 37 and the flow promoting protrusion 46 is formed on the surface of the secondary electroforming layer 65, and then this is placed in an electroforming tank. Electrodeposited metal is electroformed on the surface of the primary electroformed layer 65 not covered with the next pattern resist 66 to form a secondary electroformed layer 67 corresponding to the collision wall 37 and the flow promoting protrusion 46. Next, when the secondary pattern resist 66 is removed and a polishing process is performed to make the height of the secondary electroformed layer 67 uniform, the rotating substrate 4 integrally including the base portion 36, the collision wall 37, and the flow promoting protrusion 46 is obtained. can get.

  As shown in FIGS. 1, 9, and 10, a wing piece 70 for forcibly sending ambient air and mist is provided on the upper surface of the support base 32 facing the periphery of the outermost collision wall row 56. . The wing pieces 70 are formed of triangular block-shaped protrusions provided integrally with the support base 32, and are arranged at eight equal intervals in the circumferential direction of the support base 32 at eight positions on the inner peripheral edge of the support base 32. The blade piece 70 has a blade surface 71 inclined downward toward the lower side of the rotation direction of the support base 32 (the arrow direction in FIGS. 9 and 10), and when the support base 32 is rotated in the arrow direction, the blade An upward airflow along the surface 71 is generated.

  In order to ensure that the airflow generated in the blade piece 70 is directed upward and send the mist upward, the air guide tube 72 surrounding the outer peripheral surface of the rotation region of the blade piece 70 is directed upward at the peripheral portion of the support base 32. It is erected. The upright direction of the air guide tube 72 coincides with the rotational axis direction of the support base 32. As shown in FIG. 4, the height dimension (vertical dimension from the inner surface of the support base 32 to the upper end of the wind guide cylinder 72) h1 is larger than the height dimension h2 of the blade piece 70 in the vertical direction. It is set. The height dimension h1 of the air guide tube 72 is set to a value not exceeding twice the height dimension h1 of the blade piece 70. That is, h2 <h1 <2 × h2. As described above, when the height dimension h1 of the air guide tube 72 is set larger than the height dimension h2 of the blade piece 70 and further smaller than twice the height dimension h2, the rotation of the support base 32 is performed. It is difficult to cause shaft shake due to the above, and the airflow can be efficiently guided upward.

  On the lower side in the rotational direction of each wing piece 70, a pair of vent holes 73 penetrating the support base 32 up and down are formed. The pair of vents 73 are arranged side by side in the radial direction of the support base 32, and the outer vents 73 communicate with the lower end of the blade surface 71. By providing the vent hole 73, air can be supplied smoothly from below to the blade piece 70, and an upward airflow for sending mist can be formed smoothly.

  The operation of the main motor 3 and the pump motor 26 when the switch button 8 is operated will be described with reference to the timing chart of FIG. When the switch button 8 is turned on, the control unit 10 (see FIG. 2) first activates the main motor 3, and then activates the pump motor 26 after a predetermined time has elapsed. As described above, when the main motor 3 is started in advance with respect to the pump motor 26 and the rotary substrate 4 is driven before the liquid feed pump 23, even if water remains on the rotary substrate 4, Since the remaining water can be misted until the water is fed from the liquid feed pump 23, it is possible to prevent the formation of a large-diameter mist at the start of use of the mist generator.

  On the other hand, when the switch button 8 is turned off, the control unit 10 first stops the pump motor 26 and then stops the main motor 3 after a predetermined time has elapsed. As described above, when the main motor 3 is stopped with respect to the pump motor 26 and the rotary substrate 4 is stopped after the liquid feed pump 23 is stopped, the water supplied from the liquid feed pump 23 is transferred to the rotary substrate 4. Therefore, it is possible to solve the problem that water remains on the rotating substrate 4 without being left. Therefore, it is possible to prevent a large diameter mist from being formed when the mist generator is used next time.

  The mist generator configured as described above can be used to moisturize the face skin by supplying an air flow containing fine mist toward the face, for example, as shown in FIG. it can. Since the diameter of the mist delivered from the nozzle 15 is as small as 30 to 50 μm, the skin surface does not get wet even if the mist adheres to the skin surface. In addition, there is no impact or contact feeling as in the case where raindrops hit the skin surface, and the wrinkle has a soft touch with almost no feeling of contact as in the case where mist or haze hits the skin surface.

  In a conventional mist generating apparatus that employs a micronization method using ultrasonic vibration, the liquid micronization ability is significantly reduced when the liquid viscosity is higher than that of water. On the other hand, according to the mist generating apparatus of the present invention that makes liquid finely leap by centrifugal force and collides with the collision wall 37, the liquid can be effectively made fine even when the viscosity of the liquid is relatively large. Therefore, the range of the viscosity of the liquid that can be miniaturized can be expanded as compared with the conventional case.

  FIG. 13 and subsequent figures show another embodiment of the mist generating apparatus according to the present invention. Here, the contents different from the above embodiment will be mainly described, and the same members as those in the above embodiment are denoted by the same reference numerals. The description is omitted.

  The mist generator of FIG. 13 differs from the mist generator described above in the form of the collision wall 37. Specifically, the outer surface 59 is formed in an indented shape, and inclined surfaces 81 that are inclined from the inner peripheral side toward the outer peripheral side toward the side surface 60 are formed on both sides of the outer surface 59. The angle of the corner portion sandwiched between the side surface 60 and the inclined surface 81 is smaller than the angle of the corner portion sandwiched between the side surface 60 and the outer surface 59 in the above embodiment.

  According to the collision wall 37 configured as described above, the water flowing along the side surface 60 in the liquid passage 57 can be prevented from entering the surface side of the outer surface 59. This is because it is necessary to counter the centrifugal force in order for water to go from the side surface 60 to the inclined surface 81. Accordingly, drainage at the outlet of the liquid passage 57 can be improved, and water can be efficiently collided with the collision wall 37 facing the outlet of the liquid passage 57, thereby facilitating the refinement of water. Further, the inclined surface 81 on the lower side in the rotational direction guides the airflow flowing between the collision wall rows outwardly to improve drainage at the outlet of the liquid passage 57, and a liquid pool is generated on the surface of the outer surface 59. Can be prevented. Note that the entire outer surface 59 can be configured by an arc-shaped inner concave surface, and in this case, the same effects as described above can be obtained.

  The mist generator of FIG. 14 differs from the mist generator described above in that a plurality of fan blades 83 are provided on the outer peripheral surface of the air guide tube 72. The air guide tube 72 here also serves as a fan boss. By providing the fan blade 83 in addition to the blade piece 70, a stronger upward airflow can be generated and the generated mist can be reliably delivered.

  The mist generating device of FIG. 15 differs from the mist generating device described above in the form of the introduction body 44. The introduction body 44 here is fixed to the support base 32 via the locking projections 51, similarly to the rotating substrate 4 and the top plate 38. Specifically, a flange 85 along the upper surface of the top plate 38 is integrally formed on the outer peripheral surface of the introduction body 44, and a through hole 86 corresponding to the locking protrusion 51 is formed in the flange 85. The upper end of the locking projection 51 inserted through the through holes 52, 53, and 86 of the rotating substrate 4, the top plate 38, and the flange 85 is heat caulked to support the rotating substrate 4, the top plate 38, and the introduction body 44. It is fixed to the base 32.

  In the mist generating device of FIG. 16, the top plate 38 is formed of resin, the top plate 38 and the introduction body 44 are integrally formed, and the guide surface 47 is formed in a bell mouth shape that expands downward. This is different from the mist generator.

  The mist generating device shown in FIGS. 17 and 18 includes two rotating substrates 4A and 4B stacked one above the other, and can generate a mist twice as much as the mist generating device described above. The lower rotating substrate 4A is formed in the same manner as the rotating substrate 4 in the mist generator, and the upper rotating substrate 4B has a circular opening 88 in the center, and the flow promoting protrusion 46 is omitted. Except for the above, it is formed in the same manner as the rotating substrate 4. A base portion 36 of the upper rotary substrate 4B is placed on the upper surface of each collision wall 37 of the lower rotary substrate 4A, and a top plate 38 is placed on the upper surface of each collision wall 37 of the upper rotary substrate 4B. It is.

  The amount of water delivered by the liquid feed pump 23 is set to be twice that of the mist generator, and the liquid supply pipe 28 is formed in an internal / external double structure. The inner liquid supply pipe 28A is inserted through the passage 88 of the upper rotating board 4B, and the lower liquid supply opening 45A of the liquid supplying pipe 28A is disposed between the base portions 36 of the upper and lower rotating boards 4A and 4B. It is. The liquid supply port 45B at the lower end of the outer liquid supply pipe 28B is disposed between the base portion 36 of the upper rotating substrate 4B and the lower end of the guide surface 47 of the introduction body 44. The liquid supply port 45 </ b> B is formed to have a larger diameter than the passage port 88. According to the above configuration, water can be supplied to the lower rotating board 4A by the inner liquid supply pipe 28A, and water can be supplied to the upper rotating board 4B by the outer liquid supply pipe 28B. The water supplied to the upper and lower rotary substrates 4A and 4B is spun off by receiving a centrifugal force and collides with the collision wall 37 to be refined.

  In the mist generating apparatus of FIG. 19, the main body case 1 is composed of an upper case 1a and a lower case 1b, and is formed in a substantially spherical shape as a whole. Inside the main body case 1, a main motor 3, a rotating substrate 4, a tank 5, a pumping shaft 90 as a liquid supply means, and the like are arranged. A disc-shaped support wall 91 that supports the main motor 3 and a plurality of radiating frames 92 that support the wall 91 are disposed on the inner surface of the lower case 1b. The main motor 3 is a biaxial motor having output shafts 34A and 34B on the upper and lower ends, respectively. A container-like hood 93 that covers the main motor 3 is mounted on the upper surface of the support wall 91.

  The output shaft 34 </ b> A on the upper side of the main motor 3 passes through the hood 93 and is connected to a blower fan 94 disposed on the upper surface side of the hood 93. The blower fan 94 includes a cylindrical fan boss 95 and a plurality of fan blades 96 provided on the outer peripheral surface of the fan boss 95. When the blower fan 94 is rotationally driven, an upward airflow is generated along the outer peripheral surface of the hood 93 and the inner peripheral surface of the main body case 1.

  The lower output shaft 34 </ b> B of the main motor 3 passes through the support wall 91 and is connected to a pumping shaft 90 disposed on the lower surface side of the support wall 91. The pump shaft 90 is formed in a conical shape with the apex portion facing downward. A tank 5 is assembled inside the lower case 1b, and a pump shaft 90 is immersed in the water in the tank 5. A conical recess 98 is formed at the bottom of the tank 5 to surround the lower end of the pumping shaft 90 with a slight gap. By providing the recess 98, the water can be brought into contact with the outer peripheral surface of the pumping shaft 90 even when the remaining amount of water in the tank 5 is reduced. It can be pumped up almost without any residue. A battery 9 and a circuit board 99 are incorporated between the lower surface of the tank 5 and the inner bottom surface of the lower case 1b. The circuit board 99 is mounted with a switch that can be switched by a switch button 8 provided on the outer surface of the main body case 1, electronic components that constitute a power supply circuit, and the like.

  The rotary substrate 4 includes a collision wall row 56 (collision wall 37 / liquid passage 57) on the lower surface side, is assembled to the upper end of the pumping shaft 90, and rotates integrally with the pumping shaft 90. At the upper end of the tank 5, a collision cylinder 100 surrounding the periphery of the rotating substrate 4 is provided integrally with the tank 5. The collision cylinder 100 is formed in an upwardly expanding taper shape, and its inner peripheral surface is constituted by an uneven surface. The aforementioned radiation frame 92 is supported by the upper end surface of the collision cylinder 100. A water supply port 101 for supplying water to the tank 5 is opened at the lower part of the upper case 1a, and a cap 102 for closing the water supply port 101 is attached. Water poured into the main body case 1 from the water supply port 101 flows into the tank 5 through the space between the radiation frames 92.

  On the upper surface of the upper case 1 a, a delivery port 104 for sending the generated mist to the outside of the main body case 1 is opened, and a nozzle 15 is mounted so as to surround the delivery port 104. Between the upper surface of the upper case 1a and the blower fan 94, a disk-shaped ball support 106 that supports the ball 105 on the upper surface is disposed. The ball support 106 has a large number of openings 107 through which the generated mist passes, except for the portion of the blower fan 94 that faces the fan boss 95.

  The ball 105 is formed to have a slightly larger diameter than the upper end edge that is the narrowest portion of the delivery port 104. The ball 105 in the normal state is accommodated in the accommodating cylinder portion 108 provided in the center of the upper surface of the ball support 106 and does not block the airflow from the opening 107 to the delivery port 104, but the entire mist generating device is directed downward. Sometimes, the ball 105 falls toward the delivery port 104 and closes the delivery port 104 as indicated by an imaginary line, thereby preventing water inside the main body case 1 from leaking from the delivery port 104.

  When the switch button 8 is turned on, the main motor 3 is activated, the pumping shaft 90 and the rotating substrate 4 are rotationally driven, and the blower fan 94 is rotationally driven. When the pumping shaft 90 rotates, the water in the tank 5 rises along the outer peripheral surface of the pumping shaft 90 due to the centrifugal force, and reaches the lower surface of the base portion 36 of the rotating substrate 4. The water that reaches the rotating substrate 4 is splashed radially outward by centrifugal force, collides with the collision wall 37 several times, and then collides with the uneven surface of the collision cylinder 100 to further refine. Is done. The mist generated in this manner rides on the upward airflow formed by the blower fan 94, passes through the radial frame 92, the passage 107 of the ball support 106, and the delivery port 104 in order, and from the tip of the nozzle 15. Sent out.

  The mist generating device of FIG. 20 is used in a state of being placed on a horizontal surface such as a table, and the inside of the main body case 1 formed in a bottomed shape is partitioned vertically by a partition wall 111. A rotating substrate 4 for generating mist is accommodated in a mist generating chamber 112 on the upper side of the partition wall 111. The rotary substrate 4 is fixed to the support base 32 disposed at the center of the upper surface of the partition wall 111 together with the top plate 38. Under the partition wall 111, the main motor 3, the tank 5, the battery 9, and the control part 10 are accommodated.

  The mist generated by the rotating substrate 4 jumps out in the centrifugal direction as indicated by a broken line in FIG. 20, and eventually turns upward to the upper surface opening of the main body case 1. When the face is brought close to the upper surface opening of the main body case 1, mist can be fed to the entire face to moisturize the skin surface.

  The reason why the mist jumping in the centrifugal direction turns upward in the middle is that the kinetic energy of the mist in the centrifugal direction is gradually lost due to the air resistance, and eventually the blade piece 70 and the air guide tube 72 of the support base 32 are formed. This is because it is sucked by the upward airflow. The surrounding wall of the main body case 1 surrounding the mist generating chamber 112 is formed to have a larger diameter than the hood 14 of the mist generating device, and the mist blown in the centrifugal direction is more than the collision with the surrounding wall. First, it loses the kinetic energy in the centrifugal direction and is attracted to the upward airflow. On the other hand, in the mist generating device described above, the mist collides with the inner surface of the hood 14 and then is sent upward.

  In addition, the collision wall row | line | column 56 is not restricted to a perfect circle shape, It can form in an ellipse shape. Collision wall rows 56 can be provided on both the upper and lower surfaces of the rotating substrate 4. The pump motor 26 can be omitted, the main motor 3 can be constituted by a double-axis motor, and the liquid feed pump 23 can be driven by the main motor 3. The air guide tube 72 can be formed separately from the support base 32 and fixed to the hood 14 or the main body case 1. The position of the liquid supply port 45 of the liquid supply pipe 28 is not particularly limited, but it is disposed below the guide surface 47 as in the above-described embodiment, or is an area inside the introduction body 44 surrounded by the guide surface 47. It is desirable to arrange in.

  The inner surface 58 of the collision wall 37 can be a flat surface. The flat surface at this time is orthogonal to the radial line of the rotating substrate 4 passing through the center of the flat surface. The side surface 60 of the collision wall 37 can be formed as a curved surface. Also in this case, by forming the passage width of the liquid passage 57 narrow toward the outer peripheral side of the rotating substrate 4, the water flowing through the liquid passage 57 toward the outer peripheral side is converged to increase the flow velocity. Can do. The entire inner surface 58 and side surface 60 may be eliminated, and the whole may be configured by one inwardly convex arc surface.

  When the rotating substrate 4 and the top plate 38 are fixed to the support base 32, the rotating substrate 4 and the top plate 38 are fastened with screws screwed into the locking projections 51 instead of the fixing structure for crimping the upper ends of the locking projections 51. A fixing structure can be adopted. Note that the locking projections 51 are provided at at least two locations on the inner surface of the support base 32, regardless of whether the upper end of the locking projection 51 is caulked or the screw is screwed into the locking projection 51. It's enough.

DESCRIPTION OF SYMBOLS 1 Main body case 3 Main motor 4 Rotating board 5 Tank 23 Liquid feed pump 26 Pump motor 28 Liquid supply pipe 32 Support base 36 Base part 37 Collision wall 38 Top plate 44 Introduction body 45 Liquid supply port 46 Flow promotion protrusion 47 Guide surface 51 Engagement Stop projection 56 Collision wall row 57 Liquid passage 70 Blade piece 71 Blade surface 72 Air guide tube 73 Vent

Claims (18)

Inside the main body case (1), a rotating substrate (4) that is rotationally driven by a motor (3), a tank (5) that stores liquid for generating mist, and a liquid that is stored in the tank (5). A liquid feeding means for feeding to (4) is disposed;
An annular collision wall row (56) in which the collision walls (37) and the liquid passages (57) are alternately arranged is provided at least twice in the radial direction so as to surround the rotation center of the rotating substrate (4). A mist generator,
Each collision wall row (56) is arranged in a state where the collision wall (37) of the outer collision wall row (56) faces the liquid passage (57) of the inner collision wall row (56),
The mist generator characterized by the fact that the thickness dimension (T) of the collision wall (37) in the radial direction of the rotating substrate (4) is set smaller than the width dimension (L) of the collision wall (37). Collision wall rows (56) are provided in the radial direction of the rotating substrate (4).
The number of the liquid passages (57) of the collision wall row (56) located on the radially outer side is set to be larger than the number of the liquid passages (57) of the collision wall row (56) located on the radially inner side. Item 2. The mist generator according to Item 1. The narrowest passage width (l) of the liquid passage (57) is set smaller than the width dimension (L) of the collision wall (37),
The mist generator according to claim 1 or 2, wherein a thickness dimension (T) of the collision wall (37) is set smaller than a passage width (l) of the liquid passage (57). A large number of collision walls (37) are erected on the surface of the flat base portion (36) to constitute a rotating substrate (4).
The mist generating device according to any one of claims 1 to 3, wherein a projecting dimension (H) of the collision wall (37) is set smaller than a thickness dimension (H1) of the base portion (36).   The mist generator according to claim 4, wherein a height dimension (H) of the collision wall (37) is set smaller than a thickness dimension (T).   The inner surface (58) of the collision wall (37) facing the center of the rotating substrate (4) is formed of an inwardly convex curved surface having a smaller curvature than the outer peripheral edge of the rotating substrate (4) or a flat surface. Item 6. The mist generator according to any one of Items 1 to 5.   The mist generator according to any one of claims 1 to 6, wherein the passage width of the liquid passage (57) is formed narrower toward the outer peripheral side of the rotating substrate (4).   The mist generating device according to any one of claims 1 to 7, wherein, of the outer surface (59) of the collision wall (37), at least a peripheral surface portion facing the liquid passage (57) is formed in an indented shape.   The rotating board (4) and the top plate (38) covering the upper surface of the collision wall (37) are engaged with the locking protrusions (51) projecting from the support base (32), respectively, so that the rotating board (4) is engaged. The mist generating device according to any one of claims 1 to 8, wherein the three members, i.e., the top plate (38) and the support base (32) are integrated so as to be able to rotate together. A ring-shaped introduction body (44) is provided in the center of the top plate (38), and a liquid supply pipe (28) constituting liquid feeding means is inserted through the introduction body (44).
The mist generator according to claim 9, wherein a guide surface (47) having a downwardly expanding taper is formed on the inner surface of the introduction body (44).   The liquid supply port (45) at the lower end of the liquid supply pipe (28) is arranged in a region between the guide surface (47) and the base portion (36) of the rotating substrate (4). Mist generator. Flow promotion protrusions (46) are provided on the upper surface of the rotating substrate (4) facing the liquid supply port (45),
The mist generator according to claim 10 or 11, wherein an upper end portion of the flow promotion protrusion (46) is disposed above an opening surface of the liquid supply port (45).   13. A blade piece (70) for forcibly sending out surrounding air and mist is provided on the upper surface of the support base (32) facing the periphery of the outermost collision wall row (56). The mist generator as described in one.   The mist generator according to claim 13, wherein the blade piece (70) includes a blade surface (71) inclined downward toward the lower side in the rotational direction of the support base (32).   The mist generating device according to claim 13 or 14, wherein the support base (32) is provided with an air guide tube (72) surrounding the outer peripheral surface of the rotating region of the blade piece (70).   The mist according to any one of claims 13 to 15, wherein the support base (32) facing the blade surface (71) of the blade piece (70) has an air introduction vent (73) formed in a vertically penetrating manner. Generator.   A primary electroforming step in which the rotating substrate (4) forms a flat primary electroforming layer (65), and a secondary electroforming layer corresponding to the collision wall (37) on the surface of the primary electroforming layer (65). The mist generating device according to any one of claims 1 to 16, wherein the mist generating device is manufactured through a secondary electroforming step of forming (67). The liquid feeding means includes a pump motor (26) different from the main motor (3) for the rotating substrate (4), and a liquid feeding pump (23) driven by the motor (26),
The control unit (10) provided in the main body case (1) starts the main motor (3) at the start of use and then starts the pump motor (26) after a predetermined time has elapsed. The mist generator according to any one of claims 1 to 17, wherein the main motor (3) is stopped after a predetermined time has elapsed since the stop (26).

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