Fine mist generator

Abstract

To provide a fine mist generator that is configured so that a rotating body (first rotating body) which is supplied with liquid can be reduced in weight, a rotation speed can be increased and a diameter of a disc shape can be enlarged to enable a capacity for generating fine mist to increase and both durability and production efficiency of the generator can be enhanced, although being simply structured.SOLUTION: A first rotating body 20 of a fine mist generator 10 described in the disclosure is supported by a second rotating body 30. A first flat surface 31 is formed at the other end side of a rotary shaft 11 in the second rotating body 30. The first flat surface 31 is formed flatly over a circumferential direction and a radial direction of the second rotating body 30. A first magnet 51 is arranged on the first flat surface 31. A second magnet 52 whose polarity is same as polarity of the first magnet 51 is arranged to oppose to the first magnet 51 so that magnet force of the second rotating body 30 reaches the first magnet 51 when the second rotating body is rotationally driven by a rotationally driving part 40.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a fine mist generating device that can produce natural salt or the like by turning a liquid such as seawater into a fine mist. [Background technology]

[0002] The inventors of the present invention have proposed a device for turning seawater or other liquids into a fine mist (fine fog) by supplying seawater or other liquid to the center of a rotating disk rotating at high speed, where the supplied liquid is dispersed along the surface of the rotating disk with a uniform film thickness due to centrifugal force (see, for example, Patent Document 1). In this proposed device, a stopper wall is erected on the outer periphery of the rotating disk, and the diffusing liquid collides with the stopper wall and is further dispersed, generating a fine fog. The water evaporates as a result of the generation of this fine fog, producing natural salt.

[0003] The inventor of the present invention has also proposed a device in which, instead of a stopper wall disposed on the outer periphery of the rotating disk, a bounce wall is disposed adjacent to the outer periphery of the rotating disk with a predetermined gap space therebetween (see, for example, Patent Document 2). In this proposed device, the rotating disk and the bounce wall are provided separately, which suppresses the generation of bending stress or shear stress in the device body during high-speed rotation. As a result, this proposed device can prevent damage to the device itself and extend its lifespan. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-12390 [Patent Document 2] Japanese Patent Application Laid-Open No. 2008-132445 Summary of the Invention [Problem to be solved by the invention]

[0005] As mentioned above, both of the devices described in Patent Document 1 and Patent Document 2 supply liquid to the center of a rotating disk and use centrifugal force to cause it to collide with an obstacle wall (stopper wall or rebound wall) located radially outward, thereby generating a fine mist.

[0006] In this type of device, there is a correlation between the amount of fine mist generated and the strength of centrifugal force. To effectively utilize the centrifugal force, it is essential to rotate the rotating disk that directly receives the supplied liquid (hereinafter referred to as the "receiving rotating disk") at high speed. Specifically, when the receiving rotating disk is driven to rotate by a motor, it is necessary to reduce the weight of the receiving rotating disk, prevent precession or axial wobble during high-speed rotation of the motor shaft and receiving rotating disk, and stabilize the support of the receiving rotating disk. Furthermore, to increase the capacity of the fine mist, it is also necessary to increase the size or diameter of the receiving rotating disk.

[0007] However, in the devices of Patent Document 1 and Patent Document 2, it was structurally difficult to increase the rotation speed, weight, or diameter of the receiving rotating disk. As a result, it was difficult to increase the amount of liquid supplied, and it was difficult to increase the capacity of the fine mist generation. In this respect, it can be said that there is room for improvement in the devices of Patent Document 1 and Patent Document 2.

[0008] Furthermore, while the amount of liquid supplied per unit time can be considered roughly uniform from a macroscopic perspective, it fluctuates minutely from a microscopic perspective. When the rotation speed of the receiving rotating disk reaches 5,000 to 10,000 revolutions per minute, even a small fluctuation (imbalance) can cause the motor shaft (rotating drive shaft) to vibrate. In this case, the bearings supporting the motor shaft can be damaged and eventually destroyed, potentially resulting in damage to the motor itself. If the motor is damaged, it will take time to replace or repair it, potentially reducing the production efficiency of the fine mist. Furthermore, it is necessary to store multiple spare motors in case of motor damage, which is cost-inefficient.

[0009] Furthermore, since this type of device operates by constantly supplying liquid, it is preferable that the number of parts is small and the structure is simple, which makes maintenance easier and increases the durability of the device, thereby extending its lifespan.

[0010] The present invention was made in consideration of the above-mentioned circumstances, and its purpose is to provide a fine mist generator that has a simple structure but achieves a large capacity for generating fine mist by reducing the weight of the rotor (first rotor) to which liquid is supplied, increasing the rotation speed, and increasing the diameter of the disc, thereby improving both the durability and production efficiency of the device. Another purpose of the present invention is to provide a fine mist generator that can stably support the rotating shaft that rotates the first rotor and / or second rotor, preventing damage to the rotary drive unit, even when the amount of liquid supplied fluctuates macroscopically or microscopically over time. [Means for solving the problem]

[0011] The above-mentioned object of the present invention can be achieved by the following configuration. [1] A rotation axis; a first rotor disposed on one end side of the rotary shaft; a rotation drive unit connected to the other end of the rotation shaft and configured to rotate the rotation shaft; a second rotating body that is disposed on the other end side of the first rotating body along the rotation axis, supports the first rotating body, and is rotationally driven by the rotation drive unit; the first rotor has a substantially uniform spherical surface portion along its circumferential direction, and a recess portion into which a liquid is supplied is formed; a first flat surface is formed on the other end side of the rotation shaft of the second rotor; the first flat surface is formed flat in the circumferential direction and the radial direction of the second rotor, a first magnetic body is disposed on the first flat surface; a second magnetic body having the same polarity as the first magnetic body is disposed opposite the first magnetic body so that a magnetic force of the second magnetic body acts on the first magnetic body when the second rotating body is rotated by the rotation drive unit; Fine mist generator. [2] The first rotating body is formed by drawing a titanium material. [1] The fine mist generating device described in [1]. [3] a plurality of the first magnetic bodies are provided; the first magnetic bodies are arranged at substantially equal intervals around the circumferential direction of the first flat surface so that the radial distances from the rotation shaft are substantially the same; [1] The fine mist generating device described in [1]. [4] the first magnetic body is provided on the first flat surface in a band shape extending in a circumferential direction thereof so that the distance from the rotation shaft in the radial direction is substantially uniform; [1] The fine mist generating device described in [1]. [5] The first magnetic body is provided by magnetizing the first flat surface. [1] The fine mist generating device described in [1]. [6] The second magnetic body is provided in plurality, the second magnetic bodies are arranged at approximately equal intervals in the rotation direction of the second rotating body; The fine mist generating device according to any one of [3] to [5]. [7] The second magnetic body is provided in a band shape extending in the circumferential direction so that the distance from the second rotating body in the radial direction is approximately the same. The fine mist generating device according to any one of [3] to [5]. [8] At least a part of a surface of the first rotating body on the other end side of the rotating shaft and at least a part of a surface of the second rotating body on one end side of the rotating shaft are in surface contact with each other, and the first rotating body is supported by the second rotating body. [1] The fine mist generating device described in [1]. [9] a second flat surface is formed at a radial center of a surface of the first rotor on the other end side of the rotary shaft, a third flat surface is formed at a radial center of a surface of the second rotor on one end side of the rotary shaft, the second flat surface and the third flat surface are in surface contact; [8] The fine mist generating device according to the present invention.

[10] At least a radial center portion of the first rotating body on the other end side of the rotating shaft and at least a radial center portion of the second rotating body on one end side of the rotating shaft are integrally coupled, and the first rotating body is supported by the second rotating body. [1] The fine mist generating device described in [1].

[11] a connecting portion connecting a surface on the other end side of the first rotating body and a surface on the one end side of the second rotating body, the connecting portion extends along the axial direction of the rotation shaft, the first rotating body is supported by the second rotating body via the connecting portion; [1] The fine mist generating device described in [1].

[12] The connecting portion is provided in plurality, Each of the connecting portions is formed in a rod shape extending along the axis of the rotation shaft.

[11] The fine mist generating device according to the present invention.

[13] the first magnetic body and the second magnetic body are arranged such that a magnetic force surface of the first magnetic body and a magnetic force surface of the second magnetic body are substantially parallel to each other when the second rotating body is rotationally driven by the rotation drive unit and the first magnetic body and the second magnetic body are closest to each other; [1] The fine mist generating device described in [1].

[14] Further included is a blower that blows hot air from the other end side to the one end side along the axis of the rotation shaft near the periphery of the first rotor, The blowing direction of the blower is inclined radially outwardly of the rotation shaft. [1] The fine mist generating device described in [1].

[15] The recess has a flat surface at its bottom, The spherical portion is formed in an annular shape, and its inner edge is connected to the periphery of the flat surface. [1] The fine mist generating device described in [1].

[16] the first flat surface is an inclined surface formed so as to be inclined inward in the axial direction of the second rotating body; [1] The fine mist generating device described in [1].

[17] The liquid is seawater. [1] The fine mist generating device described in [1].

[0012] It is recommended to use the configuration described in [1] above. In this case, a first rotor that directly receives the supplied liquid is supported by a second rotor. Furthermore, the surface on the other end side of the second rotor is a first flat surface that is flat in both the circumferential and radial directions. A first magnetic body is disposed on the first flat surface, and a second magnetic body is appropriately disposed facing the first magnetic body at a predetermined location. The magnetic forces of the first and second magnetic bodies result in the first rotor being supported by the second rotor in a balanced manner in the radial direction. This reduces the weight of the first rotor and suppresses axial vibration of the rotating shaft connected to the first rotor and / or the second rotor, even when the first rotor and the second rotor are rotated at high speed. Furthermore, even when the amount of liquid supplied fluctuates macroscopically or microscopically over time, axial vibration of the rotating shaft can be effectively suppressed, preventing damage to mechanical components (such as bearings) of the rotary drive unit. Furthermore, because the load on the rotating shaft can be suppressed, the diameter of the first rotor can be increased. This allows for a larger capacity for fine mist generation, resulting in improved device durability and production efficiency. It is recommended to use the configuration described above in [2]. In this case, the first rotor is formed by drawing titanium material, so it can be made thin, making it possible to reduce the weight of the first rotor to which the liquid is supplied. Also, by forming titanium material by drawing, the strength is increased, and titanium's corrosion resistance allows performance to be maintained for a long period of time, and complex shapes can also be formed. It is recommended to use the configuration described above in [3]. In this case, the total mass of the first magnetic body attached to the second rotating body is reduced to make the second rotating body lighter, thereby reducing the load on the rotation drive unit and achieving an increase in the rotational speed of the first rotating body and the second rotating body. It is recommended to use the configuration described above in [4]. In this case, the first magnetic body attached to the second rotating body is arranged in a band (tape) shape around the circumference, and the magnetic force between the first magnetic body and the second magnetic body results in the second rotating body being able to more stably support the first rotating body. It is recommended to use the configuration described above in [5]. The first magnetic body is provided by magnetizing the first flat surface of the second rotating body, so compared to attaching a separate magnet member, the first rotating body can be made lighter and magnetized over a wider area, thereby further reducing the load on the rotation drive unit and providing more stable support for the first rotating body. It is recommended to use the configuration described above in [6]. In this case, the cost of the device can be reduced. It is recommended to use the configuration described above in [7]. In this case, the second magnetic body arranged opposite the first magnetic body is arranged in a band (tape) shape around the circumference, so that the magnetic force between the first magnetic body and the second magnetic body can ultimately support the first rotating body more stably. It is recommended to use the configuration described above in [8]. In this case, the second rotating body supports the first rotating body through surface contact, so the first rotating body is supported more stably, making it possible to increase the diameter of the disk shape of the first rotating body and reduce the load on the rotating shaft. It is recommended to use the configuration described above in [9]. In this case, the first rotating body and the second rotating body are in surface contact with each other at their flat surfaces, so that the second rotating body can support the first rotating body more stably. It is recommended to use the configuration described above in

[10] . In this case, since the first rotating body and the second rotating body are integrally joined, the second rotating body can support the first rotating body more stably. It is recommended to use the configuration described in

[11] above. Since the first rotating body is supported by the second rotating body via the connecting portion, the second rotating body can support the first rotating body more stably even if the diameter of the first rotating body is increased. As in the configuration of

[12] above, the connecting portion may be formed in a rod shape. It is recommended to use the configuration described in

[13] above. In this case, the radial support balance for the first rotating body and the second rotating body is improved, and the second rotating body can stably support the first rotating body even during high-speed rotation. It is recommended to use the configuration described in

[14] above. In this case, the liquid supplied to the first rotor is finely atomized near the periphery of the first rotor. At this time, the hot air sent by the blower unit evaporates the water contained in the liquid more instantaneously. This allows the water in the liquid to be efficiently vaporized (evaporated), and if the liquid is seawater, for example, natural salt can be efficiently produced. It is recommended to use the configuration described above in

[15] . In this case, the liquid supplied to the recess of the first rotor first comes into contact with the flat surface of the recess, and at that moment, the centrifugal force of the first rotor causes the liquid to spread radially outward in the form of a thin film. Furthermore, the liquid moves upward radially outward along the spherical surface of the recess, and at this time, it spreads radially outward while encountering mechanical resistance. As a result, when the liquid leaves the outer edge of the first rotor, it can be dispersed radially outward (in all directions) in finer particles. It is recommended to use the configuration described in

[16] above. In this case, the inclined surface tilts the direction of the magnetic forces of the first and second magnetic bodies toward the center of the rotation shaft, allowing the second rotating body to support the first rotating body in a more balanced and stable manner, even during high-speed rotation. It is recommended to use the configuration described above in

[17] . The fine mist generating device of the present invention is used to produce natural salt by scattering seawater in a fine mist in all directions. This natural salt is rich in minerals because only the water component of seawater evaporates. [Effects of the Invention]

[0013] According to the present invention, a fine mist generator is provided which has a simple structure, but which realizes a large capacity for generating fine mist by reducing the weight of the first rotating body to which liquid is supplied, increasing the rotation speed, and increasing the diameter of the disk shape, thereby improving both the durability of the device and production efficiency.

[0014] Furthermore, the present invention provides a fine mist generating device that can stably support the rotating shaft that rotates the first rotating body and / or the second rotating body, preventing damage to the rotary drive unit, even when the amount of liquid supplied fluctuates macroscopically or microscopically over time.

[0015] The present invention has been briefly described above. The details of the present invention will become clearer by reading the following detailed description of the invention (hereinafter referred to as "embodiments") with reference to the accompanying drawings. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a front cross-sectional view illustrating an example of the structure of a fine mist generating device according to a first embodiment of the present invention. [Figure 2] FIG. 2 is an enlarged view of a main part illustrating an example of the structure and mounting position of the first magnet and the second magnet shown in FIG. 1. [Figure 3] FIG. 3 is a schematic plan view illustrating an example of the attachment position of the first magnet shown in FIG. 2; [Figure 4] FIG. 3 is a schematic plan view illustrating an example of the attachment position of the second magnet shown in FIG. 2; [Figure 5] A front cross-sectional view illustrating an example of how natural salt is produced using the fine mist generating device shown in Figure 1. [Figure 6] FIG. 10 is a front cross-sectional view illustrating an example of the structure of a first modified example according to the first embodiment. [Figure 7] FIG. 10 is a schematic plan view illustrating an example of a structure related to a first magnet in a second modified example according to the first embodiment. [Figure 8] FIG. 10 is a schematic plan view illustrating an example of a structure related to a second magnet in a third modified example according to the first embodiment. [Figure 9] FIG. 10 is an enlarged view of a main part illustrating an example of the structure and attachment positions of a first magnet and a second magnet in a fourth modified example according to the first embodiment. [Figure 10] FIG. 10 is a front cross-sectional view illustrating an example of the structure of a fine mist generating device according to a second embodiment of the present invention. [Figure 11] FIG. 10 is an enlarged view of a main portion illustrating another example of the structure and mounting positions of the first magnet and the second magnet. DETAILED DESCRIPTION OF THE INVENTION

[0017] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description will be given of an embodiment of a fine mist generating device according to the present invention, with reference to the accompanying drawings.

[0018] However, more detailed descriptions than necessary may be omitted. For example, detailed descriptions of already well-known matters or redundant descriptions of substantially identical configurations may be omitted. This is to avoid unnecessary redundancy in the following description and to facilitate understanding by those skilled in the art. Furthermore, each of the accompanying drawings should be viewed according to the direction of the reference numerals.

[0019] Furthermore, the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0020] For example, in the following embodiment, a case where seawater is used as the liquid to be finely misted will be described, but the present invention is not limited to this. The present invention can be applied to various liquids. However, when the embodiment is applied to seawater, it is possible to produce high-quality natural salt rich in minerals.

[0021] <Terminology> The terms "comprising" or "characterized by," which are synonymous with "comprising" and "containing," are to be construed in an inclusive or open-ended sense and do not exclude additional, unrecited elements or method steps. "Comprising" is a term of art used in claim language that means that the named claim element is required, but that other claim elements may be added to further form structure within the scope of the claim.

[0022] Also, as used herein, the phrase "consisting of" excludes any element, step, or ingredient not specified in the claim. When the phrase "consisting of (or variations thereof)" appears in a section of the body of a claim rather than immediately following the preamble, it limits only the elements set forth in that section and does not exclude other elements from the claim as a whole. As used herein, the phrase "consisting essentially of" limits the scope of a claim to those elements or method steps specified in addition to those that do not materially affect the main and novel feature(s) of the claimed subject matter.

[0023] With respect to the terms "comprising," "consisting of," and "consisting essentially of," when one of these three terms is used herein, the presently disclosed and claimed subject matter may also include the use of either of the other two terms. Thus, in some embodiments not expressly recited otherwise, any instance of "comprising" may be replaced by "consisting of" or "consisting essentially of."

[0024] The term "process" or "step" may be used explicitly or implicitly in connection with process or method features, but no order or sequence is limited among such explicit processes or steps or among implicit processes or steps unless the order or sequence is stated.

[0025] <Technical significance of the present invention> The technical significance of the present invention will be explained.

[0026] While several embodiments of the present invention will be described in detail below, the present invention provides a fine mist generator that has a simple structure but achieves a large capacity for generating fine mist by reducing the weight of the first rotor (see below) to which liquid is supplied, increasing the rotation speed, and increasing the diameter of the disk, thereby improving both the durability and production efficiency of the device. Furthermore, the present invention can stably support the rotating shaft that rotates the first rotor and / or second rotor (see below), preventing damage to the rotary drive unit, even if the amount of liquid supplied fluctuates macroscopically or microscopically over time.

[0027] In particular, according to the present invention, the diameter of the circular disk shape of the first rotor to which the liquid is supplied can be increased; for example, if the radius is doubled, the area becomes four times larger, and furthermore, the thickness of the liquid (e.g., seawater) supplied when the first rotor is rotating is theoretically one-fourth of that at the peripheral portion of the first rotor.

[0028] Generally, when the radius of the first rotor increases, the balance tends to be lost in a direction intersecting the radial direction of the first rotor in proportion to the length of the radius. This influence increases in terms of moment, and excessive force acts on the mechanical components of the rotation drive unit, such as bearings, causing severe deterioration of the bearings and possibly leading to failure.

[0029] In the present invention, even when the diameter of the first rotor is increased, loss of balance can be prevented, making it possible to stabilize the rotation of the first rotor even at high speeds. As a result, if the diameter of a rotor with a radius of 25 cm is increased to 2000 mm, for example, assuming that the efficiency of fine mist generation of liquid (evaporation efficiency in the case of seawater) is optimal at 250 mm, then increasing the diameter to 200 cm will enable the supply of 64 times as much liquid, i.e., a 64-fold increase in production efficiency. As a result, the force acting on, for example, the bearings due to the increased diameter of the first rotor is absorbed, significantly improving production efficiency.

[0030] Furthermore, in this invention, because the first rotor is supported by the second rotor, it is possible to make the first rotor significantly thinner and lighter, for example by using titanium as the material and forming the first rotor thin and precisely by drawing. By using a first rotor formed in this way, it is possible to increase the rotation speed and improve the efficiency of fine mist generation (production efficiency).

[0031] In this way, the fine mist generating device according to the present invention has a special configuration as in the embodiment described below, in order to enable an increase in production efficiency.

[0032] First Embodiment A first embodiment of a fine mist generating device 10 according to the present invention will be described with reference to FIGS.

[0033] [Overview of the device of this embodiment] An example of an overall outline of a fine mist generating device 10 will be described with reference to FIG. FIG. 1 is a front cross-sectional view illustrating an example of the structure of a fine mist generating device 10 according to this embodiment.

[0034] As shown in FIG. 1, the fine mist generating device 10 of this embodiment includes a rotating shaft 11, a first rotating body 20, a second rotating body 30, a rotation drive unit 40, a plurality of first magnets 51 (an example of a "first magnetic body"), a plurality of second magnets 52 (an example of a "second magnetic body"), a housing 13, an air blower 16, and a water supply port 18 (see FIG. 4).

[0035] Housing 13 is configured to have a top wall portion 14 and a storage space 15 arranged below top wall portion 14. Furthermore, blower portion 16 is configured to include an air passage 17, and blows hot air from the bottom to the top in the figure (an example of "from the other end side to the one end side") along an axis AC (see below) of rotating shaft 11 near the periphery of first rotating body 20. Furthermore, the blowing direction of blower portion 16 is inclined radially outward from rotating shaft 11 as it goes upward.

[0036] The rotating shaft 11 is disposed extending in the vertical direction. The rotating shaft 11 is rotatably supported by a pair of bearings 12. The pair of bearings 12 are housed inside the housing 13 and disposed spaced apart in the axial direction of the rotating shaft 11. The tip of the rotating shaft 11 is exposed to the outside of the housing 13, and the first rotating body 20 and the second rotating body 30 are fixed to the exposed tip (an example of the "one end side"). In this embodiment, the first rotating body 20 is disposed above the second rotating body 30. That is, the second rotating body 30 is disposed below the first rotating body 20 along the rotating shaft 11 (an example of the "other end side"). The rotating shaft 11, the first rotating body 20, and the second rotating body 30 are disposed such that their axis centers AC are aligned with each other. The rotary shaft 11 is connected at its base end (an example of the "other end") to a rotary drive unit 40 via a timing belt 42 (described later).

[0037] In this embodiment, both the first rotating body 20 and the second rotating body 30 are directly fixed to the rotating shaft 11, but the present invention is not limited to this. For example, the first rotating body 20 and the second rotating body 30 may be mechanically coupled to each other, and the first rotating body 20 may be indirectly connected to the rotating shaft 11 via the second rotating body 30. In this case, the first rotating body 20 is rotationally driven by the rotation drive unit 40 via the second rotating body 30.

[0038] The first rotor 20 extends horizontally and has a recess 21 so as to have a container shape. As described above, the first rotor 20 is disposed and fixed so that its axis AC coincides with the axis AC of the rotating shaft 11, and is also fixedly provided (an example of "disposed") on one end side of the rotating shaft 11, i.e., the tip end. In this embodiment, the first rotor 20 is made of a metal member made of titanium and formed by drawing. In this case, the thickness of the first rotor 20 can be made as thin as possible to reduce rotational inertia and achieve high-speed rotation.

[0039] In this embodiment, the radius of the first rotor 20 is set to approximately 150 mm, but is not limited to this. As will be described later, since this device is configured to include a first magnet 51 and a second magnet 52, the size can be set even larger, such as a radius of approximately 1500 mm. Furthermore, the material of the first rotor 20 may be titanium, or metal materials such as stainless steel or copper may be appropriately used, and the forming method may be drawing or pressing. The material and forming method are not particularly limited, and various materials can be appropriately used. However, when forming the first rotor 20 into a thin shape, it is more preferable to use a titanium material and form it by drawing.

[0040] The recess 21 has a circular outer circumferential shape and is deep downward, forming the inner circumferential surface of the first rotor 20. As a result, the recess 21 defines a temporary storage space for seawater SW (an example of a liquid) supplied from the water supply port 18.

[0041] Specifically, recess 21 has a circular bottom surface portion 22 (an example of a "flat surface") and an annular spherical surface portion 23 (an example of a "spherical surface portion"). Circular bottom surface portion 22 of recess 21 has a circular outer shape and a flat surface, and its periphery is connected to the inner edge of annular spherical surface portion 23 of recess 21. Annular spherical surface portion 23 of recess 21 is formed in an annular shape and has a substantially uniform and asymptotic concave curved surface around the circumference of first rotor 20. First rotor 20 is disposed so that the central axes of circular bottom surface portion 22 and annular spherical surface portion 23 of recess 21 coincide with rotation axis 11 (described later).

[0042] Also on the outer peripheral surface 24 of the first rotor 20, a circular and flat circular bottom surface portion 25 and an annular spherical surface portion 26 are arranged corresponding to (following) the recessed portion 21 (inner peripheral surface).

[0043] Similarly, the circular bottom surface portion 25 of the outer peripheral surface 24 is formed to have a circular outer shape and a flat surface, and its periphery is connected to the inner edge of the annular spherical portion 26 of the outer peripheral surface 24. In other words, a second flat surface 25 is formed in the radial center of the surface of the first rotor 20 on the other end side of the rotary shaft 11.

[0044] The annular spherical portion 26 of the outer peripheral surface 24 is formed to have a generally uniform and asymptotically convex curve around the circumference of the first rotor 20. In other words, the first rotor 20 is formed into a bowl shape with a generally uniform thickness when viewed as a whole. Furthermore, the thickness is thin because it is formed by drawing titanium material as described above. The axes AC of the circular bottom surface 22 of the recessed portion 21, the circular spherical surface 23 of the recessed portion 21, the circular bottom surface 25 of the outer peripheral surface 24, and the circular spherical surface 26 of the outer peripheral surface 24 are aligned.

[0045] Furthermore, the annular spherical portion 26 of this outer peripheral surface 24 can be said to be, in other words, a portion in at least a part of the outer peripheral surface 24 of the first rotating body 20, in which an inclined surface that slopes toward the opening direction of the recess portion 21 as it goes radially outward is formed approximately uniformly around the circumferential direction of the first rotating body 20.

[0046] The second rotating body 30 extends horizontally and is formed in a disk shape (coin-like or wheel-like). As described above, the second rotating body 30 is disposed (fixed) so that its axis AC coincides with the axis AC of the rotating shaft 11. The second rotating body 30 is formed with flat front and back surfaces. Therefore, the second rotating body 30 is formed with a third flat surface 32 on its front side (the upper surface in FIG. 1). In other words, the third flat surface 32 is formed in the radial center of the surface of the second rotating body 30 on one end side of the rotating shaft 11.

[0047] Furthermore, the second rotating body 30 is formed with a first flat surface 31 on its back surface (the lower surface in FIG. 1, an example of the "other end side"), and the first flat surface 31 and the third flat surface 32 are formed flat in the circumferential and radial directions of the second rotating body 30 (or the rotating shaft 11).

[0048] The second rotating body 30 supports the first rotating body 20 via its third flat surface 32. Specifically, the second flat surface 25 (an example of "at least a part of the surface on one end side of the rotating shaft 11") of the first rotating body 20 and the third flat surface 32 (an example of "at least a part of the surface on one end side of the rotating shaft 11") of the second rotating body 30 are in surface contact, and the first rotating body 20 is supported by the second rotating body 30 due to this surface contact. In this embodiment, the major diameter of the second rotor 30 is set smaller than that of the first rotor 20 in view of manufacturing costs.

[0049] The rotation drive unit 40 includes, for example, a motor, is disposed vertically below the first rotating body 20 and the second rotating body 30, and is housed in the storage space 15 of the housing 13 of the device. The drive shaft 41 of the rotation drive unit 40 is disposed radially spaced apart from and parallel to the axis AC of the aforementioned rotating shaft 11.

[0050] A timing pulley (not shown) is fixed to the rotating shaft 11 between the pair of bearings 12. Correspondingly, a timing pulley (not shown) is also fixed to the tip of the drive shaft 41 of the rotation drive unit 40. A timing belt 42 is disposed across the pair of timing pulleys. The rotation drive unit 40 is connected to the other end (an example of the "other end"; the lower end in the figure) of the rotating shaft 11 via the timing belt 42 and drives the rotating shaft 11 to rotate. As the rotating shaft 11 is driven to rotate, the first rotating body 20 and the second rotating body 30 are driven to rotate by the rotation drive unit 40. Furthermore, the presence of the timing belt 42 or the spaced-apart arrangement of the pair of bearings 12 reduces the load on the rotation drive unit 40 or its drive shaft 41 caused by the rotational wobble of the first rotating body 20 and the second rotating body 30.

[0051] Each of the plurality of (eight in this embodiment, but not limited to) first magnets 51 is affixed to the back surface of the second rotating body 30, i.e., the first flat surface 31 of the second rotating body 30. Each of the plurality of (eight in this embodiment, but not limited to) second magnets 52 is affixed to the surface of the top wall portion 14 of the housing 13.

[0052] In this embodiment, the second magnet 52 is disposed on the top wall of the housing 13, but is not limited to this. For example, the second magnet 52 may be disposed on the tip of a support rod (see below, for example). In this case, the support rod is made of a metal rod-shaped member, and a plurality of support rods are disposed at approximately equal intervals along the rotation direction of the second rotor 30. The base end of each support rod is fixed to the top wall 14 of the housing 13.

[0053] In the fine mist generator 10 configured as described above, seawater SW supplied to the recess 21 of the first rotor 20 comes into contact with the surface of the first rotor 20, which is rotated at high speed by the rotation drive unit 40. This contact causes the seawater SW to diffuse in a substantially horizontal direction along the surface of the circular bottom 22 and the annular spherical portion 23 of the recess 21 due to the action of centrifugal force generated by the first rotor 20. During this diffusion, the seawater SW forms a thin film along the surface of the circular bottom 22 and the annular spherical portion 23 of the recess 21. As the seawater SW spreads in this thin film state, it becomes a fine mist that is sprayed radially in all directions as it separates from the outer periphery of the first rotor 20. At this time, the air blower 16 blows hot air upward near the periphery of the first rotor 20, instantly evaporating the moisture from the radially sprayed fine mist.

[0054] [Installation positions of the first and second magnets] An example of the attachment positions of the first magnet 51 and the second magnet 52 will be described with reference to FIGS. FIG. 2 is an enlarged view of a main part illustrating an example of the structure and attachment position of the first magnet 51 and the second magnet 52 shown in FIG. FIG. 3 is a schematic plan view illustrating an example of the attachment position of the first magnet 51 shown in FIG. FIG. 4 is a schematic plan view illustrating an example of the attachment position of the second magnet 52 shown in FIG.

[0055] 2 to 4, the first magnet 51 and the second magnet 52 are permanent magnets formed in a rectangular shape with a predetermined thickness, and are arranged so that their polarities are the same. For example, if the first magnet 51 has a north pole, the second magnet 52 is set to a north pole, and conversely, if the first magnet 51 has a south pole, the second magnet 52 is set to a south pole. The polarity can be set arbitrarily as long as they are magnetically repulsive to each other.

[0056] A plurality of first magnets 51 are arranged on the first flat surface 31 of the second rotating body 30. Each of the plurality of first magnets 51 is arranged on the first flat surface 31 of the second rotating body 30 at substantially the same radial distance from the axis AC of the second rotating body 30 or the rotating shaft 11 and at substantially equal intervals around the circumference.

[0057] A plurality of second magnets 52 are arranged on the top wall 14 of the housing 13. Similarly, each of the plurality of second magnets 52 is arranged on the top wall 14 of the housing 13 at approximately the same radial distance from the axis AC of the rotating shaft 11 and at approximately equal intervals around the circumference in correspondence with the plurality of first magnets 51 described above.

[0058] As shown in Figure 2, the second magnets 52 are arranged opposite each of the first magnets 51 so that their magnetic force acts on the first magnets 51 when the second rotating body 30 is rotated by the rotation drive unit 40 and approaches the first magnets 51.

[0059] Specifically, when the first rotating body 20 and the second rotating body 30 are rotated by the rotation drive unit 40 and the first magnet 51 and the second magnet 52 are closest to each other, the first magnet 51 and the second magnet 52 are positioned so that the magnetic force surfaces of the first magnet 51 and the second magnet 52 are approximately parallel to each other.

[0060] [How to use the fine mist generator] A method of using the fine mist generating device 10 will now be described with reference to FIG. FIG. 5 is a front cross-sectional view illustrating an example of how natural salt is produced using the fine mist generating device 10 shown in FIG.

[0061] As shown in FIG. 5, the first rotor 20 and the second rotor 30 are rotated at high speed by a rotation drive unit 40. The rotation speed is set, for example, in the range of 5,000 RPM to 15,000 RPM. In this state of high-speed rotation, seawater SW (an example of a liquid) is supplied from a water supply port 18 toward the center of the first rotor 20. As a result of this supply, the seawater SW supplied to the center of the first rotor 20 comes into contact with the circular bottom surface 22 of the recess 21. Due to this contact, the centrifugal force of the first rotor 20 first spreads the seawater SW in a thin film radially outward at the circular bottom surface 22 of the recess 21 of the first rotor 20.

[0062] Furthermore, the seawater SW diffuses while rising radially outward along the annular spherical portion 23 of the recessed portion 21. The upward direction has a positive (vertical upward) slope, which acts as mechanical resistance.

[0063] Therefore, due to the aforementioned centrifugal force and this positive tilt, the seawater SW further diffuses in the radial direction, becoming an even thinner film, and finally, the seawater SW scatters as a fine mist the moment it leaves the first rotor 20. The centrifugal force generated by the high-speed rotation of the first rotor 20 causes the fine mist of seawater SW to be radiated in all directions and scattered far away. At this time, only the water evaporates efficiently and instantaneously, making it possible to produce natural salt rich in minerals. Furthermore, because the blower 16 is tilted near its periphery to blow hot air, this promotes more instantaneous evaporation of water, enabling more efficient production.

[0064] [Features and advantages of this embodiment] As described above, the fine mist generator 10 of this embodiment includes a rotating shaft 11, a first rotor 20 disposed on one end of the rotating shaft 11, a rotational drive unit 40 connected to the other end of the rotating shaft 11 and driving the rotating shaft 11 to rotate, and a second rotor 30 disposed on the other end of the rotating shaft 11 relative to the first rotor 20, supporting the first rotor 20, and driven to rotate by the rotational drive unit 40. The first rotor 20 has a substantially uniform annular spherical portion 23 (an example of a "spherical portion") circumferentially, and a recessed portion 21 into which a liquid is supplied. The second rotor 30 has a first flat surface 31 formed on the other end of the rotating shaft 11. The first flat surface 31 is flat in both the circumferential and radial directions of the second rotor 30. A first magnet 51 (an example of a "first magnetic body") is disposed on the first flat surface 31. A second magnet 52 (an example of a "second magnetic body") having the same polarity as the first magnet 51 is arranged opposite the first magnet 51 so that its magnetic force acts on the first magnet 51 when the second rotating body 30 is rotated by the rotation drive unit 40.

[0065] Therefore, the first rotor 20, which directly receives the supplied seawater SW (an example of a "liquid"), is supported by the second rotor 30. Furthermore, the surface on the other end side of the second rotor 30 is a first flat surface 31 that is formed flat in the circumferential and radial directions. A first magnet 51 (an example of a "first magnetic body") is disposed on the first flat surface 31, and a second magnet 52 (an example of a "second magnetic body") is appropriately disposed on the top wall 14 (an example of a "predetermined location") of the housing 13 so as to face the first magnet 51. The magnetic forces of the first magnet 51 and the second magnet 52 result in the second rotor 30 supporting the first rotor 20 in a balanced manner in the radial direction.

[0066] This reduces the weight of the first rotor 20 and suppresses axial vibration of the rotating shaft 11 connected to the first rotor 20 and / or the second rotor 30, even when the first rotor 20 and the second rotor 30 are rotated at high speeds. Furthermore, even when the amount of liquid supplied fluctuates macroscopically or microscopically over time, axial vibration of the rotating shaft 11 can be effectively suppressed, preventing damage to mechanical components (such as the bearing 12) of the rotation drive unit 40. Furthermore, because the load on the rotating shaft 11 can be suppressed, the diameter of the first rotor 20 can be increased. This allows for a larger capacity for fine mist generation, thereby improving both the durability and production efficiency of the device.

[0067] Furthermore, according to the fine mist generator 10 of this embodiment, the first rotor 20 is formed by drawing titanium material.

[0068] Therefore, because first rotor 20 is formed by drawing titanium material, it can be formed thin, thereby realizing a reduction in the weight of first rotor 20, to which liquid is supplied. Furthermore, by forming titanium material by drawing, strength is increased, and performance can be maintained for a long period of time due to the corrosion resistance of titanium, and it is also possible to process the complex shapes described above.

[0069] Furthermore, the fine mist generator 10 of this embodiment is provided with a plurality of first magnets 51 (an example of a "first magnetic body"), which are arranged at approximately equal intervals around the circumference of the first flat surface 31 so that the distances from the rotating shaft 11 in the radial direction are approximately the same.

[0070] Therefore, the total mass of the first magnet 51 (an example of a "first magnetic body") attached to the second rotating body 30 is reduced, thereby making the second rotating body 30 lighter, thereby reducing the load on the rotation drive unit 40 and achieving an increase in the rotational speed of the first rotating body 20 and the second rotating body 30.

[0071] Furthermore, according to the fine mist generator 10 of this embodiment, a plurality of second magnets 52 (an example of a "second magnetic body") are provided. The second magnets 52 are arranged at approximately equal intervals in the rotation direction of the second rotor 30.

[0072] In this case, the cost of the device can be reduced.

[0073] Furthermore, according to the fine mist generating device 10 of this embodiment, at least a portion of the surface of the first rotating body 20 on the other end side of the rotating shaft 11 and at least a portion of the surface of the second rotating body 30 on one end side of the rotating shaft 11 are in surface contact, and the first rotating body 20 is supported by the second rotating body 30.

[0074] As a result, the second rotating body 30 supports the first rotating body 20 in surface contact, so that the first rotating body 20 is supported more stably, and it is possible to increase the diameter of the disk shape of the first rotating body 20 and reduce the load on the rotating shaft 11.

[0075] Furthermore, according to the fine mist generator 10 of this embodiment, a second flat surface 25 is formed in the radial center of the surface of the first rotor 20 on the other end side of the rotary shaft 11. A third flat surface 32 is formed in the radial center of the surface of the second rotor 30 on one end side of the rotary shaft 11. The second flat surface 25 and the third flat surface 32 are in surface contact.

[0076] Therefore, the first rotating body 20 and the second rotating body 30 are in surface contact with each other at their flat surfaces, so that the second rotating body 30 can support the first rotating body 20 more stably.

[0077] Furthermore, according to the fine mist generating device 10 of this embodiment, the first magnet 51 (an example of a "first magnetic body") and the second magnet 52 (an example of a "second magnetic body") are positioned so that when the second rotating body 30 is rotated by the rotation drive unit 40 and the first magnet 51 (an example of a "first magnetic body") and the second magnet 52 (an example of a "second magnetic body") are closest to each other, the magnetic force surfaces of the first magnet 51 and the second magnet 52 are approximately parallel to each other.

[0078] This improves the balance of radial support for the first rotating body 20 and the second rotating body 30, allowing the second rotating body 30 to stably support the first rotating body 20 even during high-speed rotation.

[0079] The fine mist generator 10 of this embodiment further includes a blower 16 that blows hot air from the other end toward the one end along the axis AC of the rotating shaft 11 near the periphery of the first rotor 20. The blower 16 is provided with a blowing direction that is inclined radially outward from the rotating shaft 11.

[0080] Therefore, the seawater SW (an example of a "liquid") supplied to the first rotor 20 is finely atomized near the periphery of the first rotor 20. At this time, the hot air sent by the blower 16 causes the moisture contained in the seawater SW to evaporate more instantaneously. Therefore, the moisture in the seawater SW can be efficiently vaporized (evaporated), and natural salt can be efficiently produced.

[0081] Furthermore, according to the fine mist generator 10 of this embodiment, the recess 21 has a circular bottom surface portion 22 (an example of a "flat surface") at its bottom. The circular spherical surface portion 23 (an example of a "spherical surface") is formed in a circular ring shape, and its inner edge is connected to the periphery of the flat surface.

[0082] Therefore, seawater SW (an example of a "liquid") supplied to recess 21 of first rotor 20 first comes into contact with circular bottom surface 22 (an example of a "flat surface") of recess 21, and at that moment, the seawater SW spreads radially outward in the form of a thin film due to the centrifugal force of first rotor 20. Furthermore, the seawater SW moves upward radially outward along annular spherical surface 23 (an example of a "spherical surface") of recess 21, and at this time, it spreads radially outward while encountering mechanical resistance. As a result, when the seawater SW leaves the outer edge of first rotor 20, the seawater SW can be scattered radially outward (in all directions) in a finer state.

[0083] Furthermore, according to the fine mist generator 10 of this embodiment, seawater SW is converted into a fine mist and scattered in all directions to produce natural salt. This natural salt is produced by evaporating only the water content of the seawater SW, and is therefore rich in minerals.

[0084] [Regarding the first modified example of this embodiment] A first modification of the above-described embodiment will be described with reference to FIG.

[0085] An example of the structure of this modified example will be described with reference to FIG. FIG. 6 is a front cross-sectional view illustrating an example of the structure of this modified example.

[0086] 6, in this modification, at least the radial center of the first rotating body 20 on the other end side of the rotating shaft 11 and at least the radial center of the second rotating body 30 on one end side of the rotating shaft 11 are integrally coupled together. Due to this coupled state, the first rotating body 20 is supported by the second rotating body 30.

[0087] In this modified example, the first rotating body 20 and the second rotating body 30 are integrally joined together, so that the second rotating body 30 can support the first rotating body 20 in an even more stable manner. The other configurations and their effects are the same as those of the first embodiment.

[0088] [Regarding the second modified example of this embodiment] A second modification of the above-described embodiment will be described with reference to FIG.

[0089] An example of the structure of the first magnet 51 in this modified example will be described with reference to FIG. FIG. 7 is a schematic plan view illustrating an example of the structure of the first magnet 51 in this modified example.

[0090] As shown in Figure 7, the first magnet 51 (an example of a "first magnetic body") arranged on the first flat surface 31 of the second rotating body 30 is extended in a band-like (endless tape-like) shape around the circumferential direction so that the radial distance from the rotating shaft 11 on the first flat surface 31 is approximately the same and so that it is positioned opposite the second magnet 52.

[0091] In this modified example, the first magnet 51 (an example of a "first magnetic body") attached to the second rotating body 30 is arranged in a strip shape (endless tape shape) around the circumference, and as a result, the magnetic force between the first magnet 51 and the second magnet 52 (an example of a "second magnetic body") enables the second rotating body 30 to support the first rotating body 20 more stably. The other configurations and their effects are the same as those of the first embodiment or the first modified example thereof.

[0092] [Regarding the third modified example of this embodiment] A third modification of the above-described embodiment will be described with reference to FIG.

[0093] An example of the structure of the second magnet 52 in this modified example will be described with reference to FIG. FIG. 8 is a schematic plan view illustrating an example of the structure of the second magnet 52 in this modified example.

[0094] As shown in Figure 8, the second magnet 52 (an example of a "second magnetic body") attached to the top wall portion 14 of the housing 13 is extended in a band-like (endless tape-like) shape around the circumferential direction so that the radial distance from the second rotating body 30 is approximately the same and so that it is positioned opposite the first magnet 51.

[0095] In this modified example, the cost of the device can be reduced. The other configurations and their effects are the same as those of the first embodiment or its first or second modified example.

[0096] [Regarding the fourth modified example of this embodiment] A third modification of the above-described embodiment will be described with reference to FIG.

[0097] An example of the structure and mounting positions of the first magnet 51 and the second magnet 52 in this modified example will be described with reference to FIG. FIG. 9 is an enlarged view of the main part for explaining an example of the structure and attachment positions of the first magnet 51 and the second magnet 52 in this modified example.

[0098] As shown in FIG. 9, an inclined flat surface 31 (one example of an "inclined surface") is formed on the periphery of the back surface of the second rotating body 30 (the other end side of the rotating shaft 11), and in this modification, this inclined flat surface 31 is the first flat surface 31. The inclined flat surface 31, that is, the first flat surface 31, is formed so as to be inclined inward in the axial direction of the second rotating body 30. A plurality of first magnets 51 are arranged on the first flat surface 31 of this modification at approximately equal radial distances from the axis AC of the second rotating body 30 or the rotating shaft 11 and at approximately equal intervals around the circumferential direction.

[0099] A plurality of second magnets 52 are provided, each of which is attached to the tip of a corresponding support rod 60.

[0100] The support rods 60 are rod-shaped members made of metal, and a plurality of them (eight in this embodiment) are arranged at approximately equal intervals along the rotation direction of the second rotating body 30. The base end of each support rod 60 is fixed to the top wall 14 of the housing 13, and an inclined flat surface 61 is formed at the tip thereof. The inclined flat surface 61 is formed so that the direction perpendicular to its plane faces the first flat surface 31 of this modified example, in other words, the inclined flat surface 61 is arranged opposite and approximately parallel to the first flat surface 31 of this modified example.

[0101] That is, in the case of this modified example, the first flat surface 31 of this modified example is an inclined surface formed so as to be inclined inward in the axial direction of the second rotating body 30.

[0102] Therefore, the inclined surface causes the direction in which the magnetic forces of the first magnet 51 (an example of a "first magnetic body") and the second magnet 52 (an example of a "second magnetic body") act to be tilted closer to the axis AC of the rotating shaft 11. Therefore, the second rotating body 30 can support the first rotating body 20 in a more balanced and stable manner even during high-speed rotation. The other configurations and their functions and effects are the same as those of the first embodiment or any one of the first to third modifications thereof.

[0103] Second Embodiment A second embodiment of a fine mist generating device 70 according to the present invention will be described with reference to FIG. In addition, parts that are the same as or equivalent to those in the first embodiment described above will be denoted by the same or equivalent reference numerals in the drawings, and their description may be omitted or simplified.

[0104] [Overview of the device of this embodiment] 10, in the fine mist generator 70 of this embodiment, the first rotor 20 and the second rotor 30 are arranged spaced apart in the axial direction of the rotary shaft 11. That is, the second flat surface 25 (the circular bottom surface portion 25 of the outer circumferential surface 24) of the first rotor 20 and the third flat surface 32 of the second rotor 30 are spaced apart in the axial direction without being in surface contact.

[0105] The rotating shaft 11 is fixedly mounted through the second rotating body 30, and its tip surface abuts against the center of the second flat surface 25 of the first rotating body 20. In this embodiment, the second flat surface 25 (the circular bottom surface 25 of the outer circumferential surface 24) of the first rotating body 20 and the third flat surface 32 of the second rotating body 30 are spaced apart in the axial direction of the rotating shaft 11 with a gap therebetween, but are not limited to this. Depending on various embodiments, they may be arranged in engagement as in the first embodiment described above, and this is optional depending on the embodiment.

[0106] In this embodiment, the fine mist generating device 70 of this embodiment further includes a plurality of connecting portions 71 that connect the second flat surface 25 or the annular spherical portion 26 (an example of the "surface on the other end side") of the first rotating body 20 to the third flat surface 32 (an example of the "surface on the one end side") of the second rotating body 30.

[0107] A plurality of connecting portions 71 are provided, and each of the connecting portions 71 extends along the axial direction of the rotating shaft 11. Specifically, each of the plurality of connecting portions 71 is formed in a rod shape extending along the axis AC of the rotating shaft 11, and is erected on the peripheral edge portion of the third flat surface 32 of the second rotating body 30 at substantially equal radial distances from the axis AC and at substantially equal intervals around the circumference.

[0108] In this embodiment, the tip end of each of the multiple connecting portions 71 is fixed to the second flat surface 25 of the first rotating body 20, and the base end is fixed to the third flat surface 32 of the second rotating body 30, but this is not limited to this. The base end may be fixed, while the tip end may be configured to be engageable with the second flat surface 25 of the first rotating body 20. Alternatively, the tip end may be fixed, while the base end may be configured to be engageable with the third flat surface 32 of the second rotating body 30. As long as the first rotating body 20 can be supported on the second rotating body 30 via the connecting portion 71, the connecting state can be arbitrary depending on various embodiments. The other configurations are the same as those of the first embodiment.

[0109] [Features and advantages of this embodiment] As described above, the fine mist generator 70 of this embodiment further includes a connecting portion 71 that connects the surface on the other end side of the first rotor 20 with the surface on one end side of the second rotor 30. The connecting portion 71 extends along the axial direction of the rotation shaft 11. The first rotor 20 is supported by the second rotor 30 via the connecting portion 71.

[0110] Therefore, the first rotating body 20 is supported by the second rotating body 30 via the connecting portion 71, so that the second rotating body 30 can support the first rotating body 20 more stably even if the diameter of the first rotating body 20 is increased.

[0111] Furthermore, the fine mist generator 70 of this embodiment is provided with a plurality of connecting parts 71. Each of the connecting parts 71 is formed in a rod shape extending along the axis AC of the rotary shaft 11.

[0112] This improves the balance of radial support for the first rotating body 20 and the second rotating body 30, allowing the second rotating body 30 to stably support the first rotating body 20 even during high-speed rotation. Other functions and effects are the same as those of the first embodiment.

[0113] <Conclusion> Although the specific embodiments have been described above, the aspects of the present invention are not limited to these embodiments, and modifications and improvements are possible as appropriate.

[0114] In the above-described embodiments, the first magnetic body and the second magnetic body are provided as permanent magnets, but this is not limiting. Any magnetic material may be used, for example, a predetermined metal body may be provided by magnetizing a portion of the metal body. For example, the first magnetic body may be provided by magnetizing the first flat surface 31. In this case, the first magnetic body is provided by magnetizing the first flat surface 31 of the second rotating body 30. This reduces the weight of the first rotating body 20 and magnetizes it over a wider area, compared to when a separate magnet member is attached. This further reduces the load on the rotation drive unit 40 and more stably supports the first rotating body 20.

[0115] 11, a plurality of fitting grooves 33 may be formed intermittently and at approximately equal intervals in the circumferential direction in the first flat surface 31 of the second rotating body 30. A portion of each of the plurality of first magnets 51 fits into the plurality of fitting grooves 33. That is, each of the plurality of first magnets 51 is fixed to the second rotating body 30 in a state where a portion of the magnet in the thickness direction is fitted into and embedded therein.

[0116] In this case, when the second rotating body 30 rotates at high speed, a strong centrifugal force acts on the first magnets 51, but as described above, the first magnets 51 are fitted in a state in which portions of the first magnets 51 are embedded in the fitting grooves 33. Therefore, each of the multiple first magnets 51 is firmly fixed to the second rotating body 30, and will not come off even when a strong centrifugal force acts on it. [Industrial Applicability]

[0117] The present invention is useful as a fine mist generator 10, 70 that has a simple structure but can generate a large amount of fine mist by reducing the weight of the rotor (first rotor 20) to which liquid is supplied, increasing the rotation speed, and increasing the diameter of the disc, thereby improving both the durability and production efficiency of the device. Furthermore, the present invention is also useful as a fine mist generator 10, 70 that can stably support the rotating shaft 11 that rotates the first rotor 20 and / or second rotor 30 and prevent damage to the rotary drive unit 40 even when the amount of liquid supplied fluctuates macroscopically or microscopically over time. [Explanation of symbols]

[0118] 10: Fine mist generator 11: Rotation axis 12: Bearing 13: Housing 14: Ceiling wall 15: Storage space 16: Blower 17: Air duct 18: Water supply port 20: First rotating body 21: Recessed part 22: Circular bottom part 23: Circular spherical part 24: Outer surface 25: Second flat surface (circular bottom surface) 26: Circular spherical part 30: Second rotating body 31: First flat surface 32: Third flat surface 33: Fitting groove 40: Rotation drive unit 41: Drive shaft 42: Timing belt 51: First magnet 52: Second magnet 60: Support rod 61: Inclined flat surface 70: Fine mist generator 71:Connection part AC: Axial center SW: Seawater

Claims

1. A rotation axis; a first rotating body disposed on one end side of the rotating shaft; a rotation drive unit connected to the other end of the rotation shaft and configured to rotate the rotation shaft; a second rotating body that is disposed on the other end side of the first rotating body along the rotation axis, supports the first rotating body, and is rotationally driven by the rotation drive unit, the first rotor has a substantially uniform spherical surface portion along its circumferential direction, and a recess portion into which a liquid is supplied is formed; a first flat surface is formed on the other end side of the rotation shaft of the second rotating body, the first flat surface is formed flat over the circumferential direction and the radial direction of the second rotating body, a first magnetic body is disposed on the first flat surface; a second magnetic body having the same polarity as the first magnetic body is disposed opposite the first magnetic body so that a magnetic force of the second magnetic body acts on the first magnetic body when the second rotating body is rotationally driven by the rotation drive unit; Fine mist generator.

2. The first rotating body is formed by drawing a titanium material. The fine mist generating device according to claim 1.

3. a plurality of the first magnetic bodies are provided, the first magnetic bodies are arranged at substantially equal intervals around the circumferential direction of the first flat surface so that the distances from the rotation shaft in the radial direction are substantially the same; The fine mist generating device according to claim 1.

4. the first magnetic body is provided on the first flat surface in a band shape extending in a circumferential direction thereof so that the distance from the rotation shaft in the radial direction is substantially uniform; The fine mist generating device according to claim 1.

5. The first magnetic body is provided by magnetizing the first flat surface. The fine mist generating device according to claim 1.

6. a plurality of the second magnetic bodies are provided, the second magnetic bodies are arranged at substantially equal intervals in the rotation direction of the second rotating body; The fine mist generating device according to any one of claims 3 to 5.

7. the second magnetic body is provided in a band shape extending in a circumferential direction so that the distance from the second rotating body in the radial direction is substantially uniform; The fine mist generating device according to any one of claims 3 to 5.

8. at least a part of a surface of the first rotating body on the other end side of the rotating shaft and at least a part of a surface of the second rotating body on one end side of the rotating shaft are in surface contact with each other, and the first rotating body is supported by the second rotating body. The fine mist generating device according to claim 1.

9. a second flat surface is formed at a radial center of a surface of the first rotor on the other end side of the rotary shaft, a third flat surface is formed at a radial center of a surface of the second rotor on one end side of the rotary shaft, the second flat surface and the third flat surface are in surface contact; The fine mist generating device according to claim 8.

10. At least a radial center portion of the first rotating body on the other end side of the rotating shaft and at least a radial center portion of the second rotating body on one end side of the rotating shaft are integrally coupled, and the first rotating body is supported by the second rotating body. The fine mist generating device according to claim 1.

11. a connecting portion connecting a surface on the other end side of the first rotating body and a surface on the one end side of the second rotating body, the connecting portion extends along the axial direction of the rotation shaft, the first rotating body is supported by the second rotating body via the connecting portion; The fine mist generating device according to claim 1.

12. The connecting portion is provided in plurality, Each of the connecting portions is formed in a rod shape extending along the axis of the rotation shaft. The fine mist generating device according to claim 11.

13. the first magnetic body and the second magnetic body are arranged such that a magnetic force surface of the first magnetic body and a magnetic force surface of the second magnetic body are substantially parallel to each other when the second rotating body is rotationally driven by the rotation drive unit and the first magnetic body and the second magnetic body are closest to each other; The fine mist generating device according to claim 1.

14. Further included is a blower that blows hot air from the other end side toward the one end side along the axis of the rotation shaft in the vicinity of the periphery of the first rotor, The blowing direction of the blower is inclined radially outwardly of the rotation shaft. The fine mist generating device according to claim 1.

15. The recess has a flat surface at its bottom, The spherical portion is formed in an annular shape, and its inner edge is connected to the periphery of the flat surface. The fine mist generating device according to claim 1.

16. the first flat surface is an inclined surface formed so as to be inclined inward in the axial direction of the second rotating body; The fine mist generating device according to claim 1.

17. The liquid is seawater. The fine mist generating device according to claim 1.

Images