Fine mist generator

Abstract

[Problem] To provide a fine mist generator, which has a simple structure and with which, for a rotor (first rotor) to which liquid is supplied, the weight can be reduced, the rotation speed can be increased, and the diameter of the disk shape can be increased, and both the durability and production efficiency of the device can be enhanced. [Solution] A first rotor (20) of this fine mist generator (10) is supported by a second rotor (30). In the second rotor (30), a first flat surface (31) is formed on the other end side of the rotating shaft (11). The first flat surface (31) is formed in a flat shape in the circumferential direction and the radial direction of the second rotor (30). A first magnet (51) is disposed on the first flat surface (31). A second magnet (52) having the same polarity as the first magnet (51) is disposed so as to face the first magnet (51) such that when the second rotor (30) is rotationally driven by a rotation drive unit (40), the magnetic force thereof reaches the first magnet (51).

Description

Fine mist generator

[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.

[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 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 the fine fog. The water evaporates as the fine fog is generated, 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 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.

[0004] JP 2008-12390 A JP 2008-132445 A

[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 and prevent precession or axial wobble during high-speed rotation of the motor shaft and receiving rotating disk, thereby stabilizing 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 achieve a higher rotation speed, a lighter weight, or a larger diameter for 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 approximately uniform from a macroscopic perspective, it fluctuates minutely from a microscopic perspective. When the rotation speed of the receiving rotary disk reaches approximately 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 may be damaged and eventually destroyed, potentially resulting in damage to the motor itself. If the motor is damaged, replacement and repair takes time, 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 has been made in consideration of the above-mentioned circumstances, and its object is to provide a fine mist generator that has a simple structure, but which 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 object 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.

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

[10] The fine mist generator of [1], wherein at least the radial center of the other end side of the rotating shaft of the first rotor and at least the radial center of the one end side of the rotating shaft of the second rotor are integrally connected, so that the first rotor is supported by the second rotor.

[11] The fine mist generator according to [1], further including a connecting part connecting a surface on the other end side of the first rotating body with a surface on one end side of the second rotating body, the connecting part extending along the axial direction of the rotating shaft, and the first rotating body being supported by the second rotating body via the connecting part.

[12] The fine mist generator according to

[11] , wherein a plurality of connecting parts are provided, and each connecting part is formed in a rod shape extending along the axis of the rotating shaft.

[13] The fine mist generator according to [1], wherein the first magnetic body and the second magnetic body are arranged so that the magnetic force surfaces of the first magnetic body and the second magnetic body are approximately parallel when the second rotating body is rotationally driven by the rotation drive part and the first magnetic body and the second magnetic body are closest to each other.

[14] The fine mist generator according to [1], further comprising an air blower that blows hot air from the other end side toward the one end side along the axis of the rotating shaft near the periphery of the first rotor, the air blowing direction of the air blower being inclined radially outward of the rotating shaft.

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

[16] The fine mist generator according to [1], wherein the first flat surface is an inclined surface formed inclined inward in the axial direction of the second rotor.

[17] The fine mist generator according to [1], wherein the liquid is seawater.

[0012] The configuration [1] above is preferable. In this case, a first rotating body that directly receives the supplied liquid is supported by a second rotating body. Furthermore, the surface on the other end side of the second rotating body 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. As a result, the magnetic forces of the first magnetic body and the second magnetic body result in the first rotating body being supported by the second rotating body in a balanced radial direction. This reduces the weight of the first rotating body and suppresses axial runout of the rotating shaft to which the first rotating body and / or the second rotating body are connected, even when the first rotating body and the second rotating body rotate at high speeds. Furthermore, even when the amount of liquid supplied fluctuates macroscopically or microscopically over time, axial runout of the rotating shaft can be effectively suppressed, preventing damage to mechanical components (e.g., bearings) of the rotary drive unit. Furthermore, since the load on the rotating shaft can be reduced, the diameter of the first rotor can be increased. This allows for a larger capacity for fine mist generation, resulting in improved durability and production efficiency of the device. The configuration [2] above is preferable. In this case, the first rotor is formed by drawing a titanium material, so its thickness can be reduced, thereby reducing the weight of the first rotor to which the liquid is supplied. Furthermore, by drawing a titanium material, strength is increased, and titanium's corrosion resistance allows performance to be maintained over a long period of time, and complex shapes can be formed. The configuration [3] above is preferable. In this case, the total mass of the first magnetic body attached to the second rotor can be reduced, thereby reducing the weight of the second rotor. This reduces the load on the rotation drive unit and increases the rotational speed of the first rotor and the second rotor. The configuration [4] above is preferable. In this case, the first magnetic body attached to the second rotating body is arranged in a band (tape) shape in the circumferential direction, and as a result, the second rotating body can more stably support the first rotating body due to the magnetic force between the first magnetic body and the second magnetic body.The first magnetic body is provided by magnetizing the first flat surface of the second rotating body. This allows for a lighter first rotating body and wider magnetization area compared to attaching a separate magnet member, thereby further reducing the load on the rotation drive unit and providing more stable support for the first rotating body. The configuration [6] above is preferable. In this case, device costs can be reduced. The configuration [7] above is preferable. In this case, the second magnetic body disposed opposite the first magnetic body is arranged in a band (tape) shape along the circumferential direction, resulting in more stable support for the first rotating body due to the magnetic force between the first magnetic body and the second magnetic body. The configuration [8] above is preferable. In this case, the second rotating body supports the first rotating body through surface contact, providing more stable support for the first rotating body, allowing for a larger diameter disc shape for the first rotating body and reducing the load on the rotating shaft. The configuration [9] above is preferable. In this case, the first and second rotating bodies are in surface contact with each other through their flat surfaces, allowing the second rotating body to support the first rotating body more stably. The configuration

[10] above is preferable. In this case, the first and second rotating bodies are integrally connected, allowing the second rotating body to support the first rotating body more stably. The configuration

[11] above is preferable. The first rotating body is supported by the second rotating body via a connecting portion, allowing the second rotating body to support the first rotating body more stably even when the first rotating body has a large diameter. As in the configuration

[12] above, the connecting portion may be formed in a rod shape. The configuration

[13] above is preferable. In this case, the balance of radial support for the first and second rotating bodies is improved, allowing the second rotating body to stably support the first rotating body even during high-speed rotation. The configuration

[14] above is preferable. In this case, the liquid supplied to the first rotating body is finely atomized near the periphery of the first rotating body. At this time, the hot air sent by the blower unit causes the moisture contained in the liquid to evaporate more instantaneously.This allows the water content of the liquid to be efficiently evaporated (evaporated), and when the liquid is seawater, for example, natural salt can be efficiently produced. The configuration

[15] described above is preferable. In this case, the liquid supplied to the recess of the first rotor first contacts the flat surface of the recess, and at that moment, the liquid spreads radially outward in the form of a thin film due to the centrifugal force of the first rotor. 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. This allows the liquid to be dispersed radially outward in a finer form (in all directions) when it leaves the outer edge of the first rotor. The configuration

[16] described above is preferable. In this case, the inclined surface tilts the direction in which the magnetic forces of the first and second magnetic bodies act toward the center of the rotation shaft. Therefore, the second rotor can support the first rotor in a more balanced and stable manner, even during high-speed rotation. The configuration

[17] described above is preferable. 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.

[0013] According to the present invention, a fine mist generating device is provided which has a simple structure, yet achieves 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.

[0016] 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; FIG. 2 is an enlarged view of a main part illustrating an example of the structure and mounting positions of the first magnet and the second magnet shown in FIG. 1; FIG. 3 is a schematic plan view illustrating an example of the mounting position of the first magnet shown in FIG. 2; FIG. 4 is a schematic plan view illustrating an example of the mounting position of the second magnet shown in FIG. 2; FIG. 4 is a front cross-sectional view illustrating an example of the production of natural salt using the fine mist generating device shown in FIG. 1;

[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] <Explanation of Terms> The terms "comprising" or "characterized by," which are synonymous with "comprising" and "containing," are to be interpreted 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 a 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 when the amount of liquid supplied fluctuates macroscopically or microscopically over time.

[0027] In particular, according to the present invention, the diameter of the 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 further, the thickness of the liquid (e.g., seawater) supplied when the first rotor is rotating is theoretically one-fourth at the peripheral part 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, and the rotation of the first rotor can be stabilized 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, it becomes possible to supply 64 times as much liquid when the diameter is increased to 200 cm, which means that production efficiency is 64 times higher. As a result, the force acting on the bearings, for example, 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 rotational 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. 1 to 9. FIG.

[0033] [Overall Overview of the Device of the Present Embodiment] An example of an overall overview of the fine mist generating device 10 will be described with reference to Fig. 1. Fig. 1 is a front cross-sectional view illustrating an example of the structure of the fine mist generating device 10 of the present 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] The housing 13 is configured to have a top wall portion 14 and a storage space 15 arranged below the top wall portion 14. The air blower 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 the axis AC (see below) of the rotating shaft 11 near the periphery of the first rotating body 20. The air blowing direction of the air blower 16 is inclined radially outward from the 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 are disposed spaced apart in the axial direction of the rotating shaft 11. The tip of the rotating shaft 11 is exposed outside the housing 13, and the first rotating body 20 and the second rotating body 30 are fixed to the exposed tip (an example of a "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 a "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 coincide 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 connectable 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, forming 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 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, reducing rotational inertia and enabling 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, as the material for the first rotor 20, metal materials such as stainless steel or copper, in addition to titanium, may be appropriately used, and the forming method may be drawing or pressing. The material and forming method are not particularly limited, and various methods can be used as appropriate. 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 rotating body 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, the 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"). The circular bottom surface portion 22 of the recess 21 has a circular outer shape and a flat surface, and its periphery is connected to the inner edge of the annular spherical surface portion 23 of the recess 21. The annular spherical surface portion 23 of the recess 21 is formed in an annular shape and has a substantially uniform and asymptotic concave curved surface along the circumferential direction of the first rotating body 20. The first rotating body 20 is disposed so that the central axes of the circular bottom surface portion 22 and the annular spherical surface portion 23 of the recess 21 coincide with the rotation axis 11 (see below).

[0042] A circular, flat circular bottom surface portion 25 and an annular spherical surface portion 26 are also arranged on the outer peripheral surface 24 of the first rotating body 20 in correspondence with (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 rotating body 20 on the other end side of the rotating shaft 11.

[0044] The annular spherical portion 26 of the outer peripheral surface 24 is formed with a generally uniform and asymptotic 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, as described above, the thickness is formed thinly by drawing a titanium material. The axes AC of the circular bottom portion 22 of the recess 21, the annular spherical portion 23 of the recess 21, the circular bottom portion 25 of the outer peripheral surface 24, and the annular spherical portion 26 of the outer peripheral surface 24 are aligned.

[0045] Furthermore, with regard to the annular spherical portion 26 of this outer peripheral surface 24, in other words, it can be said that in at least a part of the outer peripheral surface 24 of the first rotating body 20, 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 surfaces on both sides. 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”). 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 through this surface contact. In this embodiment, the major diameter of the second rotating body 30 is set smaller than that of the first rotating body 20 in terms 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. The rotation of the rotating shaft 11 causes the first rotating body 20 and the second rotating body 30 to be rotationally driven 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 this is not limiting. 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 multiple 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 blower unit 16 blows hot air upward near the periphery of the first rotor 20, instantly evaporating the moisture in the radially sprayed fine mist.

[0054] [Regarding mounting positions of the first magnet and the second magnet] An example of the mounting positions of the first magnet 51 and the second magnet 52 will be described with reference to Figures 2 to 4. Figure 2 is an enlarged view of a main part illustrating an example of the structure and mounting positions of the first magnet 51 and the second magnet 52 shown in Figure 1. Figure 3 is a schematic plan view illustrating an example of the mounting position of the first magnet 51 shown in Figure 2. Figure 4 is a schematic plan view illustrating an example of the mounting position of the second magnet 52 shown in Figure 2.

[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 as desired 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 is exerted 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] [Method of Using the Fine Mist Generator] A method of using the above-mentioned fine mist generator 10 will be described with reference to Fig. 5. Fig. 5 is a front cross-sectional view illustrating an example of how natural salt is produced using the fine mist generator 10 shown in Fig. 1.

[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. During this high-speed rotation, seawater SW (an example of a liquid) is supplied from the 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 recess 21. The upward direction of the seawater SW 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 the Present Embodiment] As described above, the fine mist generator 10 of the present embodiment includes a rotating shaft 11, a first rotating body 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 rotating body 30 disposed on the other end of the rotating shaft 11 relative to the first rotating body 20, supporting the first rotating body 20, and driven to rotate by the rotational drive unit 40. The first rotating body 20 has a substantially uniform annular spherical portion 23 (an example of a "spherical portion") along its circumferential direction, and a recessed portion 21 into which a liquid is supplied. The second rotating body 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 rotating body 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 disposed opposite the first magnet 51 so that its magnetic force acts on the first magnet 51 when the second rotating body 30 is rotationally driven by the rotation drive unit 40.

[0065] Therefore, the first rotating body 20, which directly receives the supplied seawater SW (an example of a "liquid"), is supported by the second rotating body 30. Furthermore, the surface on the other end side of the second rotating body 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 portion 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 rotating body 30 supporting the first rotating body 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 generating device 10 of this embodiment, the first rotating body 20 is formed by drawing titanium material.

[0068] Therefore, because the first rotor 20 is formed by drawing titanium material, it can be formed to a thin thickness, thereby realizing a reduction in the weight of the first rotor 20 to which the liquid is supplied. Furthermore, by forming the titanium material by drawing, the 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, in the fine mist generator 10 of this embodiment, a plurality of first magnets 51 (an example of a "first magnetic body") are provided. The first magnets 51 are arranged at approximately equal intervals around the circumference of the first flat surface 31 so that the radial distances from the rotating shaft 11 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, and 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, the fine mist generator 10 of this embodiment is provided with a plurality of second magnets 52 (an example of a "second magnetic body"), which 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 through surface contact, so that the first rotating body 20 is supported more stably, and it is possible to increase the diameter of the disc 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 rotor 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 rotor 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 the magnetic surfaces of the first magnet 51 and the second magnet 52 are approximately parallel 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.

[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 blows air in a direction 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 evaporates the water contained in the seawater SW more instantaneously. Therefore, the water 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 22 (an example of a "flat surface") at its bottom. The annular spherical surface 23 (an example of a "spherical surface") is formed in an annular shape, and its inner edge is connected to the periphery of the flat surface.

[0082] For this reason, seawater SW (an example of a "liquid") supplied to the recess 21 of the first rotor 20 first comes into contact with the circular bottom surface 22 (an example of a "flat surface") of the 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 the first rotor 20. Furthermore, the seawater SW moves upward radially outward along the annular spherical surface 23 (an example of a "spherical surface") of the 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 the first rotor 20, the seawater SW can be scattered radially outward (in all directions) in a finer state.

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

[0084] [First Modification of the Present Embodiment] A first modification of the above-described present 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. 6. 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. In 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, so that the second rotating body 30 can more stably support the first rotating body 20. The other configurations and their functions and effects are the same as those of the first embodiment described above.

[0088] [Second Modification of the Present Embodiment] A second modification of the above-described present 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. 7. 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 band 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 more stably support the first rotating body 20. The other configurations and their effects are the same as those of the first embodiment or its first modified example.

[0092] [Third Modification of the Present Embodiment] A third modification of the present 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. 8. 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 the case of this modification, it is possible to reduce the cost of the device. The other configurations and their functions and effects are the same as those of the first embodiment, or the first or second modification thereof.

[0096] [Fourth Modification of the Present Embodiment] The third modification of the present 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. 9. Fig. 9 is an enlarged view of a main part illustrating an example of the structure and mounting positions of the first magnet 51 and the second magnet 52 in this modified example.

[0098] As shown in Figure 9, an inclined flat surface 31 (an 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 modified example, this inclined flat surface 31 is referred to as the first flat surface 31. The inclined flat surface 31, i.e., the first flat surface 31, is formed 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 modified example 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 affixed to the tip of a corresponding one of the support rods 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. 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 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") to be tilted more toward the axis AC of the rotating shaft 11. This allows the second rotating body 30 to support the first rotating body 20 in a more balanced and stable manner, even during high-speed rotation. The other configurations and their 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. 10. Note that 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] 10 , in a fine mist generating device 70 of this embodiment, the first rotor 20 and the second rotor 30 are arranged spaced apart in the axial direction of the rotating 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 with each other.

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

[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 portions 71, the connecting state can be arbitrary depending on various embodiments. The other configurations are the same as those of the first embodiment described above.

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

[0110] Therefore, since the first rotating body 20 is supported by the second rotating body 30 via the connecting portion 71, 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 support in the radial direction 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 described above.

[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 where a portion of each is embedded in each of 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.

[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.

[0118] DESCRIPTION OF SYMBOLS 10: Fine mist generator 11: Rotating shaft 12: Bearing 13: Housing 14: Ceiling wall 15: Storage space 16: Air blower 17: Air blower duct 18: Water inlet 20: First rotating body 21: Recessed portion 22: Circular bottom portion 23: Annular spherical portion 24: Outer circumferential surface 25: Second flat surface (circular bottom portion) 26: Annular spherical portion 30: Second rotating body 31: First flat surface 32: Third flat surface 33: Fitting groove 40: Rotation drive portion 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 : Shaft center SW : Seawater

Claims

a first rotor disposed on one end of the rotor; a rotary drive unit connected to the other end of the rotor and driving the rotor to rotate; and a second rotor disposed on the other end of the rotor with the first rotor as a reference, supporting the first rotor, and driven to rotate by the rotary drive unit; the first rotor has a uniform spherical surface around its circumference, and has a recess formed therein into which a liquid is supplied; the second rotor has a first flat surface formed on the other end of the rotor shaft, the first flat surface being flat around the circumference and in the radial direction of the second rotor; a first magnetic body disposed on the first flat surface; and a second magnetic body having the same polarity as the first magnetic body and disposed opposite the first magnetic body so that its magnetic force is exerted on the first magnetic body when the second rotor is driven to rotate by the rotary drive unit.

2. The fine mist generating device according to claim 1, wherein the first rotor is formed by drawing titanium material.

3. The fine mist generating device according to claim 1, wherein a plurality of the first magnetic bodies are provided, and each of the first magnetic bodies is disposed at equal intervals around the circumference of the first flat surface so that the radial distance from the rotating shaft is the same.

4. The fine mist generating device according to claim 1, wherein the first magnetic body is arranged in a band shape extending around the circumference of the first flat surface so that the radial distance from the rotating shaft is constant.

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

6. A fine mist generating device as set forth in any one of claims 3 to 5, wherein a plurality of second magnetic bodies are provided, and each of the second magnetic bodies is disposed at equal intervals in the rotation direction of the second rotating body.

7. A fine mist generating device as set forth in any one of claims 3 to 5, wherein the second magnetic body is arranged in a band shape extending circumferentially so as to maintain the same radial distance from the second rotating body.

8. The fine mist generating device according to claim 1, wherein at least a portion of the surface of the first rotor on the other end side of the rotary shaft is in surface contact with at least a portion of the surface of the second rotor on one end side of the rotary shaft, and the first rotor is supported by the second rotor.

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

10. A fine mist generating device as described in claim 1, wherein at least the radial center of the first rotating body on the other end side of the rotating shaft and at least the radial center of the second rotating body on one end side of the rotating shaft are integrally connected, and the first rotating body is supported by the second rotating body.

11. The fine mist generating device according to claim 1, further comprising a connecting part connecting the surface on the other end side of the first rotating body with the surface on one end side of the second rotating body, the connecting part extending along the axial direction of the rotating shaft, and the first rotating body being supported by the second rotating body via the connecting part.

12. The fine mist generating device according to claim 11, wherein a plurality of said connecting parts are provided, and each of said connecting parts is formed in the shape of a rod extending along the axis of said rotating shaft.

13. The fine mist generating device according to claim 1, wherein the first magnetic body and the second magnetic body are arranged so that the magnetic force surfaces of the first magnetic body and the second magnetic body are parallel when the second rotating body is rotated by the rotary drive unit and the first magnetic body and the second magnetic body are closest to each other.

14. A fine mist generating device as described in claim 1, further comprising an air blowing section that blows hot air from the other end side to the one end side along the axis of the rotating shaft near the periphery of the first rotating body, the air blowing direction of the air blowing section being inclined radially outward from the rotating shaft.

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

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

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

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