JPH0354740Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a water jet pine surge machine for forcibly circulating water in an aquarium to perform pine surge using a water stream.

[Conventional technology] In the past, water was forced to flow in an aquarium,
A water jet pine surge machine is known in which a person enters the water tank and performs pine surge using a water stream.

However, this conventional structure is extremely complicated and large-scale, and requires equipment such as large-diameter piping. Furthermore, although the water flow in this pine surge is quite fast, for example 2.5 m/sec or more, the flow velocity distribution is uniform and it may be difficult to say that sufficient pine surge can be effectively performed in a short period of time. .

[Problem to be solved by the invention] Therefore, the present applicant proposed a water jet pine surge machine with a compact structure as disclosed in Japanese Patent Application Laid-open No. 1-201258, but it was small and the flow velocity distribution did not change. Although it is possible to do so, there are problems in that the fluid resistance is large and a powerful motor or the like must be used.

An object of the present invention is to provide a water jet pine surger that can reduce the fluid resistance between the bottoms of the outer water tank and the inner water tank, and downsize the motor, etc. for creating the water flow.

[Means for Solving the Problems] In order to achieve the above object, the water jet pine surger according to the present invention includes an outer water tank in which water is placed, and a gap between the bottoms of the outer water tank is provided inside the outer water tank. an inner water tank having water passage portions provided on opposing walls, and forced water flow means for creating a water flow that passes between the bottoms of the outer water tank and the inner water tank and passes through the inside of the inner water tank via the water passage portions. and an air layer forming means for forming an air layer along the lower surface of the bottom of the inner water tank.

[Function] The water flow pine surge machine having the above configuration is used while forming an air layer along the bottom surface of the inner water tank, so there is almost no fluid resistance between the bottoms of the outer water tank and the inner water tank, and the overall flow is smooth. fluid resistance is reduced.

[Example] The present invention will be explained in detail based on the illustrated example.

1 to 3 show a first embodiment, in which FIG. 1 is a plan view, FIG. 2 is a longitudinal cross-sectional view, and FIG. 3 is a cross-sectional view. In these drawings, reference numeral 1 denotes an outer water tank made of synthetic resin for holding water, and an inner water tank 2 made of the same material is provided inside of the outer water tank 1, and there is a gap between the bottoms 1a and 2a of these water tanks 1 and 2. It is provided. The inner aquarium 2 has a substantially rectangular shape that is large enough for a person to enter inside and to receive the pine surge caused by the water flow. Hole 2
d are provided respectively. In addition, the inner water tank 2
A side plate 2e is provided around the lower part of the bottom part 2a, and a space part 2f which is open at the bottom is formed. Furthermore, one or more propellers 4 rotated by a motor 3 are attached to the outside of one wall surface 2b of the inner water tank 2 to create a water flow between the wall surfaces 2b and 2c. A protective frame 5 is provided inside the wall surface 2c to prevent the body from being sucked into the hole 2d. Further, the total area of the holes 2d provided in the wall surfaces 2b and 2c is approximately equal, and the cross-sectional area between the outer water tank 1 and the inner water tank 2 through which water passes is also approximately equal to these. Further, a pump 6 for feeding air into the space 2f is provided outside the outer water tank 1, and is configured to feed air into the space 2f via an air delivery pipe 7. Furthermore, as shown in the conceptual diagram of FIG. 4, a bypass pipe 8 is connected to the outer water tank 1,
This bypass pipe 8 includes a pump 9, a filter 10,
A heating/sterilization device 11 is inserted.

Since the embodiment of the present invention has the above-mentioned configuration, the outer water tank 1 and the inner water tank 2 are filled with water, and the air delivery pipe is inserted into the space 2f under the bottom 2a of the inner water tank 2 by the operation of the pump 6. When air is sent through 7 and the propeller 4 is rotated by the motor 3,
Water rapidly flows inside the inner tank 2 from the propeller 4 side toward the opposite wall 2c, and further circulates through the gap between the bottom 2a of the outer tank 1 and the bottom 2a of the inner tank 2. Between the bottom parts 1a and 2a, there is a space 2f in which the bottom part 2a side is an air layer, so that there is extremely little resistance to water flow. Therefore, during this period, the water flow is mainly from the outer tank 1.
There is only contact resistance with the bottom surface 1a, and the loss of water head is extremely reduced. In this process, a part of the air in the space 2f becomes bubbles and is carried away with the water flow, but air is continuously replenished into the space 2f by the pump 6 at all times or as needed. Also, if you increase the air supply,
More bubbles are generated, and since these bubbles mix with the water flow and collide with the body in the inner water tank 2, other effects such as heat generation also occur on the body.

Further, a part of the water flows through the bypass pipe 8 by the operation of the pump 9, the water is filtered by the filter 10, and the water temperature can be adjusted and sterilized by the heating/sterilization device 11.

5 and 6 show a second embodiment, with FIG. 5 being a longitudinal cross-sectional view and FIG. 6 being a cross-sectional view. Instead of forming a space 2f by a side plate 2e in the lower part of the inner water tank 2, air is sent out from the upstream side along the lower surface of the inner water tank 2 to form an air layer 2g. In this case, a pipe 12 provided with a large number of air holes is provided laterally on the lower upstream side of the bottom 2a of the inner water tank 2, and the air delivery pipe 7 is connected to this pipe 12.

When a water flow is created by the propeller 4 and air is sent into the pipe 12 through the air delivery pipe 7, the air flows out from the air holes of the pipe 12 in the form of bubbles and flows along the lower surface of the bottom 2a of the inner water tank 2 along with the water flow. The air advances and is discharged to the outside from an air vent 13 provided near the top of the propeller 4. In this case as well, the lower surface of the bottom 2a of the internal water tank 2 is covered with the air layer 2g, so that water flow resistance is reduced.

Note that the propeller 4 is not necessarily attached only to the wall surface 2b on one side, and the propeller 4 is attached to the opposite wall surface 2c.
It is also possible to obtain an extremely complex water flow distribution by attaching the water to the outside of the pipe and changing the rotation speed appropriately.

[Effect of the invention] As explained above, the water flow pine surge machine according to the invention can reduce the fluid resistance between the bottoms of the outer water tank and the inner water tank by forming an air layer on the lower surface of the bottom of the inner water tank. As a result, the overall fluid resistance becomes extremely low, and a high flow velocity can be obtained in the inner water tank.

[Brief explanation of drawings]

The drawings show an embodiment of the water jet pine surge machine according to the present invention, and FIG. 1 is a plan view of the first embodiment, FIG. 2 is a vertical cross-sectional view, FIG. 3 is a cross-sectional view, and FIG. 4 is a conceptual diagram. , FIG. 5 is a longitudinal sectional view of the second embodiment, and FIG. 6 is a horizontal sectional view. 1 is an outer water tank, 1a is a bottom, 2 is an inner water tank, 2a is a bottom, 2b, 2c are walls, 2d is a hole, 2e is a side plate, 2f is a space, 2g is an air layer,
3 is a motor, 4 is a propeller, 6 and 9 are pumps, 7
is an air delivery pipe, 8 is a bypass pipe, and 12 is a pipe.

Claims (1)

[Scope of utility model registration request] An outer aquarium for storing water, an inner aquarium arranged with a gap between the bottoms of the outer aquarium, and a water passage provided on the opposing wall surface, and a passage between the bottoms of the outer aquarium and the inner aquarium. The water tank is characterized by comprising a forced water flow means for creating a water flow passing through the inside of the inner water tank via the water flow part, and an air layer forming means for forming an air layer along the lower surface of the bottom of the inner water tank. Water flow pine surge machine.