JPH0535393U - Water surface vortex generator - Google Patents

Abstract

(57) [Summary] [Purpose] A strong swirl can be formed on the water surface with a simple device that can be easily installed at any position under the water surface of a pond or lake. [Structure] A water tank 11 having a cylindrical peripheral wall 12 and a bottom portion 13 and an opening 15 provided on an upper surface is settled below the water surface,
The water above will be installed to allow natural inflow. When the fan 17 provided rotatably in the horizontal direction at the center of the bottom portion 13 of the water tank 11 is rotated by the submersible motor 16, water immediately above the fan 17 is sucked downward, and the periphery of the fan 17 is swirled along the bottom portion 13. Swivel. Since a part of the water flowing along the inner peripheral surface of the peripheral wall 12 in the same direction as the rotation direction of the fan 17 is discharged to the outside from the drain port 19 provided on the lower inner peripheral surface of the peripheral wall 12, inside the water tank 11. The speed of rotation of the water increases. On the other hand, other water rises while spirally swirling the inner peripheral surface of the peripheral wall 12 as a whole, and when reaching the upper portion of the peripheral wall 12, forms a deep spiral with water that naturally flows in from the opening 15 of the water tank 11. It rapidly flows down just above the fan 17.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a water surface vortex generator that forms a vortex on a water surface such as a pond or a lake.

[0002]

[Prior Art]

 In a conventional water surface vortex generator, a water inlet is provided in the center of the bottom of an upper open-type water tank having a cylindrical peripheral wall and a bottom, and water is jetted along the peripheral surface on the inner periphery of the upper part of the peripheral wall. One or two or more outlets are provided, and a side water inlet for sucking and discharging water in the same direction corresponding to the direction of water jetted by the jet outlet is provided in the lower part of the peripheral wall. This water tank is submerged below the surface of the water, and water is sucked by a pump from the water intake port at the center of the bottom and the side water intake ports, and at the same time, water is ejected from the ejection port to generate a swirl in the water tank (for example, (See Japanese Patent Publication No. 51-29074).

[0003]

[Problems to be solved by the device]

 In conventional water surface vortex generators, it is necessary to provide powerful pumps for sucking water from the water intake port at the center of the bottom and the water intake port at the side, respectively, in a location separate from the water tank. Since it is necessary to install a powerful pump for supplying water to the jet outlet, there is a problem that the cost becomes high.

Further, for the above reason, it is necessary to provide the pipes that connect the respective pumps with the water intake ports and the jet ports so that water does not leak, so that it is troublesome to install the water surface vortex generator. However, there was a problem that it could not be easily installed at any position on a large pond or lake.

Further, it is necessary to make the amount of water jetted from the jet outlet smaller than the amount of water sucked from the water inlet in the center of the bottom and the water sucked from the side, so that the lower end of the spiral can surely reach the water inlet in the center of the bottom. In order to do this, the suction force from the side water inlet must be made smaller than the suction force from the water inlet in the center of the bottom.

The present invention was developed to solve the above-mentioned problems, and forms a strong spiral on the surface of the water with a simple device, is inexpensive, and can be easily placed at any position on a pond or lake. The object is to provide a water surface vortex generator that can be installed.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in the water surface vortex generator of the present invention, a water tank 11 having a cylindrical peripheral wall 12 and a bottom portion 13 and an opening 15 provided on the upper surface is set below the water surface to allow the water tank 11 The upper part of the water will be installed to allow natural inflow. Then, the output shaft 18 of the submersible motor 16 serving as a rotation driving means is projected to the center of the bottom portion 13 of the water tank 11, so that the fan 17 can be horizontally rotated on the output shaft 18 and the water above the fan 17 can be sucked. Set up. Further, a drain port 19 for discharging water flowing along the inner peripheral surface of the peripheral wall 12 to the outside in the same direction as the rotation direction of the fan 17 is provided on the lower inner peripheral surface of the peripheral wall 12.

Further, directly above the fan 17 in the water tank 11, a central flow passage 31 having a cylindrical shape is provided concentrically with the rotation axis of the fan 17. The upper end of the central flow path 31 is provided below the opening surface of the water tank 11, and a trumpet-forming vortex forming wall surface 34 is provided between the peripheral edge of the opening surface and the upper end of the central flow path 31. Further, the vortex forming wall 34 is provided with an endless opening 35 which is continuously concentric with the rotation axis of the fan 17 and has a constant width. On the other hand, a bottom surface flow path 32 communicating with the lower end of the central flow path 31 is provided around the fan 17 along the entire surface of the bottom portion 13 at an arbitrary height. Furthermore, a peripheral surface flow passage 33 having an arbitrary width is provided along the entire inner peripheral surface of the peripheral wall 12, and the entire lower end surface of the peripheral surface flow passage 33 is formed on the entire outer peripheral end surface of the bottom surface flow passage 32. In addition to being provided so as to communicate with each other, the entire upper end of the peripheral surface flow path 33 can be communicated with the outlet 35 of the vortex forming wall surface 34.

Further, a plurality of the drainage ports 19 are provided on the inner peripheral surface of the peripheral wall 12, and the plurality of drainage ports 19 are provided at point symmetrical positions around the center position of the inner periphery of the peripheral wall 12. It is effective.

Further, a drainage pipe 20 communicating with the drainage port 19 is provided outside the peripheral wall 12, and a discharge port 22 at the tip of the drainage pipe 20 is arranged in the atmosphere above the water surface or at the bottom surface of the water. ..

[0011]

[Action]

 When the submersible motor 16 is rotated by turning on the power, the fan 17 is rotated in the horizontal direction, water immediately above the fan 17 is sucked, and the centrifugal force of the rotation of the fan 17 causes the fan 17 to rotate around the fan 17. The water flows along the surface of the bottom portion 13 toward the peripheral wall 12, some water is discharged to the outside of the water tank 11 through the drain port 19, and the other water spirals along the inner peripheral surface of the peripheral wall 12. It rises while turning like a circle. The water that has reached the upper portion of the peripheral wall 12 flows down directly above the fan 17 while forming a deep spiral with the water that naturally flows in from the upper portion of the opening 15 of the water tank 11.

Further, in the water surface vortex generator 10 in which the water flow path is formed in the water tank 11, water forms a flow similar to that of the water surface vortex generator 10 described above. That is, the water in the central flow path 31 flows to the bottom surface flow path 32 by the rotation of the fan 17, and flows to the peripheral surface flow path 33 while swirling through the bottom surface flow path 32 along the bottom portion 13. Then, the water that rises while spiraling in the peripheral surface flow path 33 as a whole rises, flows out obliquely downward from the outlet 35 onto the vortex forming wall surface 34, and flows in from the upper part of the opening 15 of the water tank 11. At the same time, it flows down to the central flow path 31 while swirling on the vortex forming wall surface 34.

Since part of the water in the bottom portion 13 is discharged from the drainage port 19 to the outside of the water tank 11, the rotation of the vortex becomes faster and a deeper vortex is formed. For this reason, if a plurality of drainage ports 19 are provided on the inner peripheral surface of the peripheral wall 12 in a point-symmetrical position around the center position of the inner periphery of the peripheral wall 12, a part of the water of the bottom portion 13 is discharged from the drainage port 19. It is effective because it is evenly and efficiently discharged to the outside of the water tank 11.

[0014]

【Example】

 The water surface vortex generator 10 of the first embodiment will be described with reference to the drawings. In FIGS. 1 and 2, reference numeral 11 denotes a water tank which is submerged below the water surface, and has a cylindrical vertical peripheral wall 12 and a bottom portion 13. However, the top surface is open. Further, an output shaft 18 of a submersible motor 16 serving as a rotation driving means is projected to the center of the bottom surface of the bottom portion 13, and a fan 17 having a plurality of blades is provided on the output shaft 18. The submersible motor 16 is fixed to the outer wall surface of the bottom portion 13 and has a strong rotational force.

Further, at least one drainage port 19 is provided on the circumferential wall 12 of the water tank 11 and the circumferential wall 12 near the corner of the bottom wall 13, and a drain pipe 20 communicating with the drainage port 19 is provided on the inner circumference of the circumferential wall 12. It is connected to the outer wall of the peripheral wall 12 in the tangential direction of the surface. When two or more drainage ports 19 and drainage pipes 20 are provided, the drainage ports 19 and the drainage pipes 20 are provided at point-symmetrical positions around the center of the peripheral wall 12.

Further, a corner guide 14 formed in a concave curve is provided on the entire circumference of the corners of the peripheral wall 12 and the bottom portion 13. This corner guide 14 smoothly flows as shown in FIG. 1 when the water flowing in the direction of the peripheral wall 12 along the surface of the bottom 13 by the centrifugal force of the fan 17 rises along the peripheral wall 12 from the corners. However, the corner guide 14 does not necessarily have to be provided. When the corner guide 14 is provided, the corner guide 14 is provided with a drainage channel 21 for smoothly communicating the inside of the water tank 11 and the drainage port 19.

The water tank 11 is fixed so that the opening 15 on the upper surface is located below the water surface at a certain depth, and the water above the water tank 11 is installed so as to always flow naturally through the opening 15. That is, the bottom 13 of the aquarium 11 may be installed on the bottom of the pond and the submersible motor 16 may be buried under the bottom of the pond, or a mount may be provided on the bottom of the pond or lake and the aquarium 11 may be mounted on the top of the mount. It can also be installed. Alternatively, as shown in FIG. 3, around the outer wall surface of the peripheral wall 12 of the water tank 11, a float 55 having buoyancy enough to float the water tank 11 above the water surface is provided, and three floats 55 are provided around the outer wall surface of the peripheral wall surface 12. The above-mentioned hook is projected, and the hooks are tensioned between the hooks and a plurality of mooring weights 51 provided on the water bottom by mooring ropes 52, respectively, and the opening 15 on the upper surface of the water tank 11 is positioned below the water surface at a certain depth. The aquarium 11 can be submerged as if soaking. The mooring weight 51 may be buried in concrete on the bottom of a water such as a pond or a lake, or may be a “weight” having a weight enough to sink the water tank 11 provided with the float 55. When the mooring weight 51 is a “weight”, there is an advantage that the aquarium 11 can be easily installed at any place of a pond or a lake.

As shown in FIG. 3, the cord 53 such as the power cord or control cord of the submersible motor 16 in the aquarium 11 passes under the surface of the water or under the bottom of the pond or lake and is located outside the pond or lake. By connecting to the installed control panel 54 and the power source, it is possible to prevent the beauty of the pond or lake from being impaired.

When the submersible motor 16 is rotated by turning on the switch of the control panel 54, the fan 17 at the tip of the output shaft 18 rotates horizontally, so that the water in the water tank 11 is centered on the rotation axis of the fan 17. Rotate to. That is, the water above the fan 17 is sucked by the fan 17 and flows toward the bottom portion 13, and as shown by the two-dot chain line in FIG. The water sucked by the fan 17 and the water around the fan 17 flow toward the peripheral wall 12 along the surface of the bottom portion 13 while rotating around the fan 17 due to the centrifugal force generated by the rotation of the fan 17 (see FIG. 2). The direction of the dotted arrow). Then, a part of the water passes through the drainage channel 21 provided in the corner guide 14 and is discharged to the outside through the drainage port 19 and the drainage pipe 20, while the other water rises on the concave curved surface of the corner guide 14. It rises along the wall surface of the peripheral wall 12 (see FIG. 1). The water that has risen above the peripheral wall 12 is sucked to a position above the fan 17. At this time, as shown by the solid line in FIG. 2, the fan 17 flows down in the axial direction of the fan 17 while rotating in the rotational direction of the fan 17. Furthermore, the surrounding water above the water tank 11 naturally flows in through the opening 15.

Therefore, not only the swirl is forcibly generated in the water tank 11 by the strong rotational force of the fan 17, but also the water below the water tank 11 is drained near the corners of the peripheral wall 12 and the bottom portion 13. Since the water is drained to the outside of the water tank 11 through the mouth 19 and the drainage pipe 20, the rotation speed of the water in the water tank 11 is increased, so that the vortex becomes deeper. As shown in FIG. 3, when the discharge port 22 at the tip of the drainage pipe 20 is exposed to the atmosphere on the water surface, the resistance in discharging the water in the drainage pipe 20 is smaller than that in the case of discharging the water into the water. Therefore, the water in the drainage pipe 20 is drained more smoothly. Therefore, the rotation speed of the water in the water tank 11 is further increased to form a deeper vortex.

When the outlet 22 of the drainage pipe 20 faces the bottom of the pond or lake, the powerful water flow discharged from the outlet 22 stirs the rich nutrients that have settled at the bottom of the pond or lake. However, since convection occurs in the water, effective supplemental oxygen is supplied and water in the ponds and lakes is activated.

As shown in FIG. 3, by installing the water surface swirl generator 10 of the present invention below the water surface of a pond or lake, a large ornamental vortex is formed on the water surface. Furthermore, if a plurality of water surface vortex generators 10 are installed at arbitrary locations in a pond or a lake, a plurality of large vortices will be formed on the water surface. The beauty and magnificence of can be increased.

Next, the water surface vortex generator 10 of the second embodiment will be described with reference to FIGS. 4, 5, 6 and 7 while omitting the same parts as those of the first embodiment. The second embodiment is basically to provide a water flow path in the water tank 11 of the first embodiment. Reference numeral 31 denotes a central flow passage located at the center of the peripheral wall 12. The central flow passage 31 has a cylindrical shape having a diameter substantially the same as the rotation diameter of the fan 17, and the rotation shaft of the fan 17 is located directly above the fan 17. It is a flow path provided on a circle concentric with the heart. Further, the upper end of the central channel 31 is located below the surface of the opening 15 of the water tank 11, and the surface connecting the upper end of the central channel 31 and the peripheral edge of the opening 15, that is, the upper edge of the peripheral wall 12 is a trumpet shape. The vortex forming wall surface 34 is formed.

A bottom flow passage 32 having a constant height is provided around the fan 17 along the entire surface of the bottom portion 13, and the bottom flow passage 32 communicates with the lower end of the central flow passage 31. Further, a peripheral surface flow passage 33 having a constant width is provided along the entire inner peripheral surface of the peripheral wall 12, and the lower end of the peripheral surface flow passage 33 communicates with the above-mentioned bottom surface flow passage 32. The upper end communicates with an outlet 35 provided in the vortex forming wall surface 34. The blowout port 35 is an opening provided in the vortex forming wall surface 34, and is an endless opening that continuously makes a round with a constant width on a concentric circle centered on the rotation axis of the fan 17.

The outlet 35 is provided slightly below the surface of the opening 15 so that the outlet 35 and the upper end of the peripheral surface flow path 33 are communicated with each other through a smooth curved surface. Therefore, the water that rises while spirally rotating along the peripheral wall 12 in the peripheral surface flow path 33 is blown obliquely downward from the outlet 35 onto the vortex forming wall surface 34. Further, in the bottom flow path 32, as shown in FIGS. 4 and 6, a guide plate 37 that is substantially parallel to the tangential direction of the rotation circle of the fan 17 can be erected at an appropriate position on the bottom portion 13. ..

In addition, as shown in FIGS. 4 and 7, a guide plate 36 having a slight dihedral angle with respect to the surface of the bottom portion 13 can be provided in an appropriate position in the circumferential flow passage 33.

The guide plate 36 and the guide plate 37 also serve as columns for supporting the central flow path 31, the bottom flow path 32, the peripheral flow path 33, and the walls forming the vortex forming wall surface 34. However, it is not always necessary to provide the guide plates 36 and 37 in order to freely change the flow of water due to the rotation of the fan 17.

By the rotation of the fan 17, the water in the central flow path 31 is sucked by the fan 17 and flows into the bottom surface flow path 32. Then, as shown in FIG. 6, the water in the bottom surface channel 32 flows toward the peripheral wall 12 while rotating spirally in the rotation direction of the fan 17. At this time, the water is guided by the inner plate 37 and flows in a spiral shape. Then, as in the first embodiment, a part of the water is discharged to the outside of the water tank 11 through the drainage passage 21 and the drainage pipe 20 while the other water is concavely curved in the corner guide 14. As it passes through the surface, it rises in the circumferential flow path 33 while rotating in a spiral shape along the circumferential wall 12. At this time, the water in the peripheral flow passage 33 is guided by the guide plate 36 and rises while rotating spirally as shown in FIG. Then, as shown in FIGS. 4 and 5, the water above the peripheral flow passage 33 flows obliquely downward from the outlet 35 onto the vortex forming wall surface 34 and swirls on the vortex forming wall surface 34 in a spiral shape. While being sucked into the central channel 31. Further, the surrounding water above the water tank 11 naturally flows into the central flow path 31 from the opening 15. Therefore, in the water surface swirl generator 10 of the second embodiment, a large amount of water is spirally swirled in the central flow path 31, the bottom flow path 32, and the peripheral flow path 33 by the rotation of the powerful fan 17. While flowing, it is blown out from the outlet 35 so as to swirl to the vortex forming wall surface 34, so that a strong vortex is formed as shown by the chain double-dashed line in FIG.

In the case of the second embodiment, the submersible motor 16 is provided in the central position in the central flow passage 31 so that the axis of the output shaft 18 of the submersible motor 16 is located on the center line of the central flow passage 31. Further, the output shaft 18 of the submersible motor 16 may be directed downward, and the fan 17 provided at the front end of the output shaft 18 may be provided at the same position as in the second embodiment.

[0030]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects.

(1) A fan is provided below the water tank at the center of the bottom so as to be rotatable in the horizontal direction, and one or more drain outlets are provided in the tangential direction of the cylindrical peripheral wall in the water tank. Since it is provided, a powerful spiral can be formed with a simple structure, and an inexpensive water surface spiral generator can be provided.

(2) Furthermore, since it has a simple structure as described in the above item (1) and the submersible motor that is a rotation driving means of the fan is provided in the water tank, any underwater surface such as a pond or a lake can be provided. It was possible to provide a water surface vortex generator that can be easily installed at a position.

(3) Since the central channel, the bottom channel and the side channel are provided in communication with each other in the water tank, and further, the vortex forming wall surface is provided below the opening surface of the water tank and inclined toward the central channel. Thus, it is possible to provide a water surface vortex generation device in which water in a water tank surely flows while spirally swirling in each of the flow paths and forms a strong vortex on a vortex forming wall surface.

(4) Since the plurality of drainage ports are provided on the inner peripheral surface of the peripheral wall 12 and the plurality of drainage ports are provided at point symmetrical positions around the center position of the inner periphery of the peripheral wall, the bottom portion Part of the water is discharged from the outlet to the outside of the tank uniformly and efficiently, and the rotation of the vortex is accelerated to form a deeper vortex.

(5) When the drainage pipe communicating with the drainage port is provided outside the peripheral wall and the discharge port at the tip of the drainage pipe is arranged in the atmosphere above the water surface, the rotation speed of the water in the water tank is It can increase and form deep swirl, and when the outlet of the drainage pipe is arranged at the bottom of the water, water in the pond or lake can be activated.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a device according to a first embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a sectional view showing a state in which the device of the present invention is installed in a pond or a lake.

FIG. 4 is a vertical sectional view of an apparatus according to a second embodiment of the present invention.

FIG. 5 is a plan view of FIG.

6 is a cross-sectional view taken along the line AA of FIG.

7 is a cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

10 ... Water surface vortex generator, 11 ... Water tank, 12 ... Peripheral wall, 1
3 ... Bottom part, 14 ... Corner guide, 15 ... Opening, 16 ... Submersible motor, 17 ... Fan, 18 ... Output shaft, 19 ... Drainage port, 20 ... Drainage pipe, 21 ... Drainage channel, 22 ... Discharge port, 31
... central channel, 32 ... bottom channel, 33 ... peripheral channel, 34 ...
Vortex forming wall surface, 35 ... Outlet port, 36 ... Guide plate, 37 ... Guide plate, 51 ... Mooring weight, 52 ... Mooring rope, 53 ... Cord, 54 ... Control panel, 55 ... Float,

Claims (4)

[Scope of utility model registration request] 1. A water tank having a cylindrical peripheral wall and a bottom portion and having an opening on the upper surface is set below the water surface so that water in the upper portion of the water tank can flow into the water tank at the center of the bottom portion of the water tank. The output shaft of the rotation driving means is projected, the fan is provided on the output shaft so as to be rotatable in the horizontal direction and capable of sucking water above the fan, and further on the inner peripheral surface of the peripheral wall in the same direction as the rotating direction of the fan. A water surface vortex generator, characterized in that a water outlet for discharging the water flowing along the outside is provided on the lower inner peripheral surface of the peripheral wall. 2. A cylindrical central flow path is provided immediately above the fan in the water tank on a circle concentric with the rotation axis of the fan.
The upper end of the central flow path is provided below the opening surface of the water tank, and a trumpet-forming wall surface having a trumpet shape is provided between the peripheral edge of the opening surface and the upper end of the central flow path. An endless opening is provided on the circle concentric with the axis of rotation and having a constant width, and a bottom passage communicating with the lower end of the central passage is provided around the fan along the entire bottom surface. And a peripheral surface flow path that communicates with all the end surfaces of the bottom surface flow path in the outer peripheral direction is provided with an arbitrary width along the entire inner peripheral surface of the peripheral wall, and the entire upper surface of the peripheral surface flow path. The water surface swirl generator according to claim 1, wherein the water surface vortex generator communicates with an outlet of the vortex forming wall. 3. The water surface swirl generator according to claim 1 or 2, wherein a plurality of the drainage ports are provided on the inner peripheral surface of the peripheral wall at point symmetrical positions with respect to the center position of the inner periphery of the peripheral wall. 4. A drainage pipe communicating with the drainage port is provided outside the peripheral wall, and a discharge port at the tip of the drainage pipe is arranged in the atmosphere above the water surface or at the bottom surface of the water. The water surface vortex generator described.