WO2009072796A2

WO2009072796A2 - The disk rotary motion device by buoyancy

Info

Publication number: WO2009072796A2
Application number: PCT/KR2008/007118
Authority: WO
Inventors: Soo Min Mun
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-03
Filing date: 2008-12-03
Publication date: 2009-06-11
Anticipated expiration: 2010-06-03
Also published as: WO2009072796A3

Abstract

Disclosed is a disk-type rotary motion device with a disk which is adapted to alternately rotate into and out of a water tank containing water. A rotary motion device includes: a water tank 12 adapted to contain water in the interior thereof, the water tank being formed substantially in a rectangular parallelepiped shape, one of the walls of the water tank 12 having a semicircular concave part 11; a circular disk 13, which is fitted in the semicircular concave part 11 so that it is rotatable; a rotary axis 14 for supporting the rotation of the disk 13; buoyancy means 15 provided on the periphery of the disk 13 in such a manner that a part of the buoyancy means 15 is placed within the water tank 12, and the remaining part of the buoyancy means 15 is placed outside the water tank 12. When the buoyancy means 15 provided on the periphery of the disk is introduced into the water tank, buoyancy is produced, and the buoyancy is used as the driving force for rotating the disk 13. As a result, the efficiency for obtaining axial torque can be improved.

Description

Description THE DISK ROTARY MOTION DEVICE BY BUOYANCY

Technical Field

[1] The present invention relates to a disk- type rotary motion device with a disk which is adapted to alternately rotate into and out of a water tank containing water, and more particularly to a disk-type rotary motion device with a disk and buoyancy means which are provided on the periphery of the disk, so that while the disk is being rotated, the buoyancy means are introduced into the water tank, thereby producing buoyancy, which is used as the driving force for rotating the disk, whereby the rotary motion device can be more efficiently operated. Background Art

[2] In general, a rotary motion device with a disk-shaped or cylindrical body includes a rotary axis at the center of the body, and a motor for rotating the rotary axis. In order to rotate the disk-shaped or cylindrical body, power is applied to the motor, by which the rotary axis is rotated.

[3] As an example of such a rotary motion device, a water mill with a disk-shaped rotary wheel is configured to be continuously supplied with an external force in such a manner that water continuously falls onto the rotary wheel of the water mill with a head (positional energy), whereby the rotary wheel can be continuously rotated.

[4] As mentioned above, a conventional rotary motion device is continuously supplied with an external force, so that the disk-shaped or cylindrical body or the like can be continuously rotated. In that event, by connecting a connection means to the rotary axis of the disk-shaped or cylindrical body or the like, axial torque of the rotary axis can be efficiently used at a place where the torque is needed. Disclosure of Invention Technical Problem

[5] As mentioned above, in order to obtain axial torque of a rotary motion device, such as a disk-type rotary motion device, it is necessary to continuously apply external energy from the outside of the rotary motion device. However, the above-mentioned conventional rotary motion devices have problems in that the output energy produced through the torque of the rotary axis is very low compared to the external energy input into the rotary motion devices. Consequently, the efficiency of such rotary motion devices is very poor.

[6] Therefore, the present invention has been made in view of the above-mentioned problems, and the present invention provides a disk-type rotary motion device which uses buoyancy as driving force, the rotary motion device including a rotatable disk and buoyancy means provided on the periphery of the disk, and a water tank containing water, half of the buoyancy means being immersed in the water of the tank, and the remaining part of the buoyancy means being exposed to the atmosphere outside the water tank, wherein while the disk is being rotated, buoyancy produced by the water in the water tank is applied to the disk as an external force through the buoyancy means placed within the tank. As a result, the output efficiency of the axial torque can be increased substantially. Technical Solution

[7] In order to solve the above-mentioned problem, there is provided a disk-type rotary motion device, which uses buoyancy as the driving force, the rotary motion device including: a water tank adapted to contain water in the interior thereof, the water tank being formed substantially in a rectangular parallelepiped shape, one of the walls of the water tank having a semicircular concave part; a circular disk, which is fitted in the semicircular concave part so that it is rotatable; a rotary axis for supporting the rotation of the disk; buoyancy means provided on the periphery of the disk in such a manner that a part of the buoyancy means is placed within the water tank, and the remaining part of the buoyancy means is placed outside the water tank.

Advantageous Effects

[8] As described above, the inventive disk-type rotary motion device uses buoyancy, which is produced by the water acting on the buoyancy means placed in the water tank, as the driving force for rotating the disk. Consequently, the axial torque of the disk, and hence the output efficiency can be increased substantially.

Brief Description of Drawings [9] The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which: [10] FIG. 1 is a perspective view schematically showing the inventive disk- type rotary motion device driven by using buoyancy as the driving force; [11] FIG. 2 is an exploded perspective view of the inventive disk- type rotary motion device; [12] FIG. 3 is a front vertical cross-sectional view of the inventive disk-type rotary motion device; [13] FIG. 4 is a right vertical cross-sectional view of the inventive disk-type rotary motion device; and [14] FIG. 5 is a top horizontal cross-sectional view of the inventive disk-type rotary motion device.

Best Mode for Carrying out the Invention [15] Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

[16] FIG. 1 is a perspective view schematically showing the inventive disk- type rotary motion device driven by using buoyancy as the driving force, FIG. 2 is an exploded perspective view of the inventive disk-type rotary motion device, and FIG. 3 is a front vertical cross-sectional view of the inventive disk-type rotary motion device. In addition, FIG. 4 is a right vertical cross-sectional view of the inventive disk-type rotary motion device, and FIG. 5 is a top horizontal cross-sectional view of the inventive disk-type rotary motion device.

[17] As shown in FIGs. 1 to 5, the inventive disk-type rotary motion device 10, which uses buoyancy as the driving force, includes: a water tank 12 adapted to contain water in the interior thereof, the water tank being formed substantially in a rectangular parallelepiped shape, one of the walls of the water tank 12 having a semicircular concave part 11; a circular disk 13, which is fitted in the semicircular concave part 11 so that it is rotatable; a rotary axis 14 for supporting the rotation of the disk 13; buoyancy means 15 provided on the periphery of the disk 13 in such a manner that a part of the buoyancy means 15 is placed within the water tank 12, and the remaining part of the buoyancy means 15 is placed outside the water tank 12.

[18] The buoyancy means 15 provided on the periphery of the disk 13 has a thickness which is larger than that of the disk 13. The buoyancy means 15 is provided with air pockets 151 containing air, which are equally spaced from each other around the disk 13. Between every two adjacent air pockets 151, there is provided a spacing part 153 formed by a plurality of lattices.

[19] Preferably, the ratio of the thicknesses tl and t2 of the air pockets 151 and the spacing parts 153 is 6:4 (see FIGs. 3 and 4).

[20] Each of the air pockets 151 has inner and outer portions which gradually incline as they approach the center of the air pocket, thereby forming an angled shape, and the spacing parts 153 neighboring the air pockets 151 have substantially the same shape as the air pockets 151. Consequently, when the disk 13 rotates clockwise (as shown in FIG. 3), each of the air pockets 151 forms a crimp "Λ" shape, so that the apexes of the air pockets are oriented clockwise.

[21] With this shape, it is possible to minimize the resistance of the fluid acting on the air pockets 151 when the air pockets float upward due to buoyancy produced by the water contained in the water tank.

[22] The air pockets 151 are tightly sealed so that air or fluid cannot flow into or out of the air pockets 151, while the spacing parts 153 are formed so as to allow air or fluid to freely flow into or out of the spacing parts 153.

[23] Therefore, when an air pocket 151 and a spacing part 153 enter the water in the water tank 12 from the outside of the water tank, the air pocket 151 is made to float toward the water surface due to the buoyancy of water, and water flows into the spacing part 153, thereby expelling air from the spacing part 153. As a result, vortex is produced, and due to the vortex, driving force is induced. With the driving force, the air pocket 151 will be pushed further upward. In addition, as air is expelled from the spacing part 153 by the fluid flowing into the spacing part, air bubbles are produced, which will additionally push the air pocket 151 upward. Consequently, the driving force for rotating the buoyancy means 15 will be increased.

[24] With this arrangement, the disk 13 having the buoyancy means 15 formed by the integral combination of the air pockets 151 and the spacing parts 153 can be more smoothly rotated about the rotary axis 14. Therefore, the output efficiency can be further increased.

[25] In addition, the water tank 12 has an outlet passage 121 and an inlet passage 122, which are provided at the upper and lower areas of the water tank 12, respectively. While rotating, the buoyancy means 15 is allowed to move out of the tank 12 through the outlet passage 121, and to move into the tank through the inlet passage 122. The inlet passage 122 is formed with a length of inlet guide means so as to prevent the leakage of water from the interior of the water tank 12.

[26] Of course, the outlet passage 121, the inlet passage 122, and a fitting slit 111 formed through the concave part 11 so as to allow the peripheral edge of the disk 13 to be fitted in the concave part 11 are provided with sealing means (not shown) so as to prevent the leakage of water from the interior of the water tank 12. In addition, each of the opposite sidewalls of the water tank 12 is provided with a bracket 141 for supporting the rotary axis to be rotatable.

[27] With the above-described construction of the inventive disk-type rotary motion device 10, half of the buoyancy means 15 is always placed within the water tank 12, and the remaining part is always placed outside the water tank 12, i.e., in the atmosphere. Alternatively, the inventive disk-type rotary motion device 10 may be configured in such a manner that an external force, such as pneumatic pressure, can be applied to and rotate the buoyancy means 15, whereby the disk 13 can be more efficiently driven.

[28] Of course, it is also possible to provide a protection cover (not shown) so as to protect the buoyancy means 15 positioned in the atmosphere.

[29] The inventive disk- type rotary motion device 10 driven by the force induced by buoyancy as described above is operated in the following manner: if initial external force is applied to the rotary axis 14 clockwise in the state in which the water tank 12 is filled with water to the level of the outlet passage 121, the disk 14 is rotated clockwise, and then the buoyancy means 15 is rotated and an air pocket 151 of the buoyancy means 15 is introduced into the inlet passage 122. As a result, the water in the water tank 12 will flow into a spacing part 153 positioned behind the air pocket 151.

[30] If so, the air pocket 151 floats toward the water surface due to buoyancy. At the same time, water is introduced into the spacing part 153, thereby producing a vortex, which produces an additional force acting on the air pocket 151. As a result, the disk can be rotated more efficiently.

[31] With this principle, the disk 13 provided with the buoyancy means 15 can be driven within the water tank 12. As a result, the present invention can be applied to all kinds of systems which employ such rotation so as to increase power.

[32] If a plurality of disk-type rotary motion devices configured as described above are operated in a state in which they are installed in parallel, it is possible to obtain substantially high power with low input energy. Industrial Applicability

[33] Although several exemplary embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

[1] A disk- type rotary motion device, which uses buoyancy as the driving force, the rotary motion device comprising: a water tank 12 adapted to contain water in the interior thereof, the water tank being formed substantially in a rectangular parallelepiped shape, one of the walls of the water tank 12 having a semicircular concave part 11; a circular disk 13, which is fitted in the semicircular concave part 11 so that it is rotatable; a rotary axis 14 for supporting the rotation of the disk 13; buoyancy means 15 provided on the periphery of the disk 13 in such a manner that a part of the buoyancy means 15 is placed within the water tank 12, and the remaining part of the buoyancy means 15 is placed outside the water tank 12.

[2] The disk- type rotary motion device as claimed in claim 1, wherein the buoyancy means 15 is provided with air pockets 151 containing air, which are equally spaced from each other around the disk 13, and wherein there is provided a spacing part 153 formed by a plurality of lattices between every two adjacent air pockets 151.

[3] The disk-type rotary motion device as claimed in claim 2, wherein the ratio of the thicknesses tl and t2 of the air pockets 151 and the spacing parts 153 is 6:4.

[4] The disk-type rotary motion device as claimed in claim 2, wherein each of the air pockets 151 has radially inner and outer portions which gradually incline as they approach the center of the air pocket, whereby each of the air pockets 151 forms a "Λ" crimp shape.