JPH0520353Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a circulating pool used for swimming practice and training to strengthen athletes.

[Prior Art] In recent years, swimming practice methods have become more scientific and efficient, and a water flow generator is installed to circulate water in a vertical circulation channel with an observation section. Circulating pools have been put into practical use in some areas of the observation area where swimming practice and training can be practiced.

FIG. 2 shows an example of a conventional circulating water tank, in which 1 is a vertical circulating pool body installed via a base 2, an upper water channel 3 and a lower water channel 4.
, a front diverting channel 5 and a rear diverting channel 6 that connect the upper and lower channels 3 and 4.

The upper water channel 3 has an observation window 7 on the side wall of the circulating pool body 1, and the upper part is open to form a free water surface, thereby forming an observation section 8. In addition, the lower waterway 4 has an impeller 9 for generating water flow at the upstream end position, that is, at the end position on the rear diversion waterway 6 side.
are arranged so as to be rotationally driven by a drive device 10 installed outside the circulating pool body 1.
Furthermore, water guide plates 11 called guide vanes are provided in the front and rear direction changing channels 5 and 6 to change the direction of water flow. Further, the upstream end of the bottom plate 3' forming the bottom surface of the upper water channel 3 is provided with a rounded bulge 12 in order to prevent separation of the water flow that has passed through the front diversion channel 5. is forming.

A water flow is generated by rotationally driving the impeller 9 by the driving device 10, and the generated water flow is accelerated in the lower water channel 4, changed direction in the front diverting water channel 5, and is sent to the upper water channel 3. further passes through the rear diversion channel 6 and is sucked in again by the impeller 9,
The water flow circulates.

However, in such conventional circulation pools, the bulge 12 formed at the upstream end of the bottom plate 3' of the upper water channel 3 is considered to be effective to some extent in preventing flow separation; 3', the flow causes a reverse flow, and the change in water depth generates standing waves on the free water surface, or significantly reduces the uniformity of the flow in the observation section 8. There was a problem.

Therefore, recently, as shown in FIG. 3, a bottom plate 3' forming the bottom of the upper water channel 3 is provided to be parallel to the ceiling plate 4' of the lower water channel 4, and the bottom plate 3' and the ceiling plate 4' It was devised that both ends in the water flow direction are connected by arc-shaped guide portions 13 and 14, respectively, to constitute a double-structured partition plate 15 that defines an upper water channel 3 and a lower water channel 4.

Note that the same reference numerals in FIG. 3 as in FIG. 2 indicate the same parts.

[Problems to be solved by the invention] However, as mentioned above, the double structure partition plate 1
5 is effective in suppressing the generation of standing waves and improving the uniformity of the flow. 4, water pressure in the vertical direction acts independently on each, so the bottom plate 3' and the ceiling plate 4' are required to be strong, and as a result, materials such as stainless steel have to be used and the plate thickness has to be increased, which increases material costs. In addition to being bulky, there were many difficulties in the manufacturing process, such as ensuring parallelism between the bottom plate 3' and the ceiling plate 4'.

In view of these circumstances, the present invention aims to reduce the production cost of the partition plates and, by extension, the production cost of the pool as a whole, without reducing the uniformity of the flow.

[Means for Solving the Problems] The present invention uses a partition plate to define an upper waterway having an observation section and a lower waterway having a water flow generating device, and a front and rear waterway connecting the upper and lower waterways. In a recirculation pool in which a diversion waterway is provided to constitute a vertical recirculation pool body, arcuate guides forming the inner wall surface on the center side of the front and rear diversion waterways are provided at both ends of the ceiling plate forming the ceiling of the lower waterway. A water-permeable bottom plate forming a bottom surface of the upper water channel is provided between the front and rear arcuate guide parts, and is continuous with the front and rear arcuate guide parts and parallel to the upper side of the ceiling plate. The partition plate is characterized in that it is installed via a pedestal so that the partition plate becomes

[Operation] By driving the water flow generator, water flows from the lower waterway through the front diversion waterway and into the upper waterway. At this time, since the bottom surface of the upper channel is a flat surface with no steps, no standing waves are generated and the flow is uniform.
Further, since water flows between the bottom plate and the ceiling plate through the bottom plate, water pressure acts on the bottom plate and the ceiling plate from above and below to balance each other.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

As shown in FIG. 1, arc-shaped guide portions 13 and 14 are provided at both ends of the ceiling plate 4' of the lower water channel 4 in the water flow direction, respectively, to form the inner wall surface on the center side of the front and rear diversion channels 5 and 6. Reinforcing members 16 and 17 are attached to the arcuate guide portions 13 and 14 to prevent buckling thereof, and small diameter flow holes 18 are bored at desired positions on the ceiling plate 4' to provide water permeability to the bottom. The face plate 20 is placed between the front and rear arcuate guide portions 13 and 14 so that its upper surface coincides with the upper end surfaces of the arcuate guide portions 13 and 14.
The partition plate 22 is constructed by placing the partition plate 22 on the pedestal 19 so as to be continuous with the ceiling plate 14 and parallel to the ceiling plate 4'.

Note that the same reference numerals in FIG. 1 as in FIG. 3 indicate the same parts.

In this way, in the case of the present invention, since the bottom surface of the upper water channel 3 is a flat surface with no steps, the generation of standing waves is prevented and the uniformity of the flow is not deteriorated.
0 has a communication hole 18 drilled in it, so the bottom plate 20
Water flows into the space 21 between the upper water channel 3 and the ceiling plate 4' through the circulation hole 18, and water pressure acts on the bottom plate 20 and the ceiling plate 4' from above and below, respectively, resulting in balance. is maintained, the necessary thicknesses of the bottom plate 20 and the ceiling plate 4' are reduced, and resins such as FRP and plastic can be used as materials.
In particular, as the bottom plate 20, any material can be used as long as it can support the weight of the swimmer within the observation section 8.

Also, in order to install the bottom plate 20 on the ceiling plate 4',
The parallelism of the bottom plate 20 with respect to the ceiling plate 4' can be easily achieved, and the manufacturing process is also facilitated.

It should be noted that the bottom plate 20 may be a slatted plate in which a plurality of plates are arranged at required intervals;
Item 17 may be modified in various ways without departing from the gist of the present invention, such as the fact that it may be formed integrally with the ceiling plate 4' by extending and bending both ends of the ceiling plate 4'. Of course, it is also possible to add

[Effects of the invention] As described above, according to the circulating pool of the invention, since the bottom plate is made water permeable, the water pressure applied to the bottom plate and the ceiling plate is balanced, and thereby the plate thickness is reduced. It is possible to reduce the material cost and weight by reducing the amount of water, and the manufacturing process can be easily performed.As a result, the manufacturing cost of the entire pool can be reduced. Since it is a flat surface with no steps over the entire length, excellent effects such as suppressing the generation of standing waves and improving the uniformity of the flow can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a schematic cut-away side view of a circulating pool according to the present invention, and FIGS. 2 and 3 are explanatory views of a conventional example. 1 is the circulating pool body, 3 is the upper waterway, 4 is the lower waterway, 4' is the ceiling plate, 5 is the front diversion waterway, 6 is the rear diversion waterway, 9 is the impeller, and 13 and 14 are the circular guide parts. , 18 is a communication hole, 19 is a pedestal, 20 is a bottom plate, 21 is a space, and 22 is a partition plate.

Claims (1)

[Scope of utility model registration request] A partition plate defines an upper waterway with an observation section and a lower waterway with a water flow generator, and a front and rear diversion waterway is provided to connect the upper and lower waterways to form a vertical circulation pool body. In the circulating pool,
At both ends of the ceiling plate that forms the ceiling of the lower waterway,
Arc-shaped guide portions forming the center-side inner wall surfaces of the front and rear diversion channels are provided, and a bottom plate with water permeability forming the bottom surface of the upper water channel is placed between the front and rear arc-shaped guide portions. A circulating pool characterized in that the partition plate is installed via a pedestal so as to be continuous with the arcuate guide part and parallel to the upper side of the ceiling plate.