JPS6328281Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a swimming pool having a circulation inlet in the bottom wall.

<Conventional technology> In general, swimming pools perform circulating purification (filtration) by circulating water through a circulation channel provided outside the pool body and passing through a purifier along the way. The circulation suction inlet, which is the entrance to the channel, is provided on the bottom wall of the pool body.

However, in conventional pools, the circulation inlet has a water flow area that is at most three times the cross-sectional area of the circulation pipe, and the opening is covered with a rough lattice-shaped cover. If a towel, etc. falls on top of the water or someone gets on it, nearly half or more of the water flow area will be blocked, and the suction force of the pump will be applied to the narrow area left unblocked. As a result of the concentration, the suction force applied to the area becomes extremely strong. Therefore, if a small child steps on or approaches this part, there is a danger that the suction force will suck their feet and make them unable to move, or that their legs will get tangled and they will fall, and that they will be sucked in and drown. Ta.

Therefore, in order to prevent such accidents, pools with an improved structure of the circulation inlet so that sudden suction force does not occur near the circulation inlet, such as the
There is a pool described in Publication No. 16646.

In such a pool, a plurality of circulation outlets (water injection part) are arranged on one short side wall of the pool body, and a circulation inlet (drawer suction part) is arranged in a pit (horizontal groove) in the bottom wall of the lower part of the other side wall facing the side wall. ), and the tip is closed in the pit with an exhaust pipe, and the hole diameter is gradually adjusted from the base to the tip, taking into account the suction flow velocity and loss over distance, so that the same amount of water is sucked in at each point in the pipe direction. It has a structure in which a main suction pipe with large suction holes arranged at appropriate intervals is placed horizontally on the lower wall, and the opening of the pit is covered with a lattice cover or a net as necessary.

However, the main suction pipe, which has suction holes with different hole diameters at appropriate intervals in the pipe direction, is installed in a pit at the bottom of the side wall so as not to transmit the suction speed to the water. The water is made to flow evenly and naturally without any particular flow in any direction, and is evenly sucked and circulated.

However, purified circulating water is blown into the pool from a circulation outlet installed on one side wall of the short side of the pool body, and is sucked and discharged outside the pool from a circulation inlet formed in the bottom wall at the bottom of the opposite side wall. Because the circulation method is designed to keep the water flowing, in the case of small pools, the dirty water from all over the pool flows smoothly toward the circulation inlet and is sucked out from the inlet, effectively circulating and removing dirt. Water can be purified efficiently, but in the case of large pools, the dirty water cannot flow smoothly to the circulation inlet and be sucked out from the inlet. It has the disadvantage that it cannot efficiently circulate and purify the water.

In addition, the lattice cover or net attached to the opening of the pit is generally made of metal, so it can be corroded by the chlorine used as a disinfectant or disinfectant for pool water. It was severely deteriorated by corrosion and could not be used for many years.

<Problems to be solved by the invention> The problems to be solved by the invention are, of course, to prevent drowning accidents by preventing the sudden generation of suction force near the circulation inlet formed in the bottom wall. ,
To enable efficient purification by effectively circulating dirty water throughout the pool even in a large pool, and furthermore to prevent deterioration in durability due to corrosion of a lid attached to the opening of a pit. It is in.

<Means for solving the problem> The technical means taken by the present invention to solve the above problem is to arrange the circulation outlet at the required location on each side wall of the pool body, and the circulation inlet to the pool body. A gutter-like pit is provided in the center of the bottom wall, and reinforcing bodies made of resin concrete are fixed to appropriate locations on the back side of the FRP plate over the entire opening, and a large number of It is covered with a lid with small holes, and the opening area of the lid, which is made up of a large number of distributed small holes, is three times the water flow area set by the suction capacity of the pump and the cross-sectional area of the circulation pipe. The reason is that the opening area is increased by several tens of times.

<Function> According to the above technical means, the circulating water purified by the purifier in the middle of the circulation pipe flows from the circulation outlet provided on each side wall of the pool body to the center of the bottom wall of the pool body. The air is blown out toward the circulation inlet formed in the air. At this time, the dirty water throughout the pool is effectively guided and flowed toward the circulation inlet in the center of the bottom wall by the circulating water outlet (water pressure) blown out from the circulation outlet in each side wall. The water flowing near the circulation suction port has an opening area several to several tens of times larger than the water flow area set by the suction capacity of the pump and the cross-sectional area of the circulation pipe, through a large number of small holes. In other words, even if some of the many small holes that make up the circulation suction port are blocked by towels or the like that have sunk in the pool, the suction force of the pump will be extremely strong ( The water is suctioned and discharged from the circulation suction port, which has a sufficient water flow area without the risk of sudden pressure increase, and is sucked and discharged to a purifier in the middle of the circulation pipe, where it is efficiently circulated and purified.

<Example> An example of the present invention will be described based on the drawings.
A in the figure is the pool body, which has multiple bottom plates a..., side plates b.
It is constructed by connecting and assembling...

The pool body A is provided with a circulation inlet 1 in the center of its bottom wall _{A 1} and a circulation outlet 2 in each side wall A ₂ . A circulation pipe 5 having a pump 3 and a purifier 4 is connected to the outside of the pool body A.

Therefore, the water in the pool body A enters the circulation pipe 5 from the circulation inlet 1 by the suction force of the pump 3, flows through the pipe 5, is purified by the purifier 4, and returns to the pool body from the circulation outlet 2. Return to inside A.

The circulation inlet 1 is located in the center of the bottom wall _A1 of the pool body A.
A pit 6 formed in the shape of a gutter with a predetermined groove width over almost the entire length in the short side direction is provided, and the pit 6
It is constructed by covering the entire surface of the opening with a lid 8 in which a large number of small holes 7 are drilled in a distributed manner, and the opening area of the lid 8 is adjusted to increase the suction capacity of the pump 3 and the circulation pipe. The opening area should be three times or more to several tens of times larger than the water flow area set by the cross-sectional area of 5.

The pit 6 is formed slightly deeper on one end side,
A circulation pipe communication hole 9 is provided in the side surface thereof. An annular mating flange 10 is attached and fixed to the outer surface of the pit 6 with bolts and nuts 11 along the circulation pipe communication hole 9, and the circulation pipe 5 is screwed to the mating flange 10.

Further, the pit 6 has a stepped portion 12 formed at the edge of its opening with a depth corresponding to the thickness of the lid 8, and the lid 8 is engaged with the stepped portion 12 so that the surface of the lid 8 is formed on the pool body. Make it flush with the bottom of A.

The circulation outlet 2 is provided at a required location on each side wall _A2 of the pool body A, as shown in FIG.

As shown in FIG. 6, the lid 8 is made of FRP containing unsaturated polyester resin as its main component. A reinforcing body 14 made of resin concrete is fixed in the form of a flat frame that matches the shape of the plate 13 and is integrally attached to the back surface of the plate 13. Small holes 7 are drilled in a dispersed manner.

As shown in the figure, the reinforcing body 14 is lined with FRP whose main component is unsaturated polyester resin.
Thereby, it is fixed integrally to the back surface of the plate body 13.

Therefore, the lid 8 has a reinforcing body 14 made of resin concrete whose main component is unsaturated polyester resin, which is the same material as the main component of the board 13, fixed as a weight to the back surface of the board 13, so that it can be reinforced. body 1
4 is fixed and integrated with the back surface of the plate 13, so it has the necessary weight without the risk of lifting etc. Furthermore, since the reinforcing body 14 is covered with an FRP lining, it can be used for many years. However, the reinforcing body 14 made of resin concrete is not corroded by chlorine, which is used as a disinfectant or disinfectant for pool water, and can prevent cracking and damage caused by corrosion and deterioration, and has sufficient strength. to safely and reliably cover the opening of the pit 6.

The large number of small holes 7 are large enough not to be clogged with dirt, etc., and large enough not to allow swimmers' toes to fit into them, except for the part where the reinforcing body 14 is attached. 13 Distribute a large number evenly over a wide area, that is, the suction capacity of the pump 3 and the circulation pipe 5.
A large number of holes are evenly distributed to ensure an opening area that is three or more times to several tens of times larger than the water flow area set by the cross-sectional area of the holes. In the drawings, the large number of small holes 7 formed in the plurality of lids 8 are designed to ensure an opening area that is three or more times to several tens of times larger than the water flow area.

Therefore, in this embodiment, each side wall of the pool body A
By arranging circulation outlet 2 in A ₂ to blow out the circulating water purified by the purifier 4 in the middle of the circulation pipe 5 into the pool, the dirty water in the entire pool is removed from the bottom wall A ₁ center. The dirty water is effectively guided and flowed to the circulation suction port 1 formed in the section, sucked and discharged from the suction port 1, and sucked and flowed to the purifier 4 in the middle of the circulation pipe 5, thereby efficiently circulating and purifying the dirty water. It is something.

The opening area of the circulation suction port 1 provided at the center of the bottom wall A ₁ of the pool body A is replaced by a large number of small holes 7 formed in a lid 8 covering a wide area over the entire opening of the pit 6. ...A large number of small holes 7, each forming a circulation suction port 1, are configured to have a water passage area that is three or more times to several tens of times larger than the water flow area set by the suction capacity of the pump 3 and the cross-sectional area of the circulation pipe 5. Even if some of the small holes 7 are left unblocked by towels, etc. submerged in the pool or by the feet of swimmers, the suction force by the pump 3 is extremely increased. In other words, it is designed to ensure a necessary and sufficient water passage area without the risk of generating an extremely strong suction force that would cause swimmers to be sucked in and unable to move.

In addition, the opening area of the lid 8 is larger than the water flow area set by the suction capacity of the pump 3 and the cross-sectional area of the circulation pipe 5, that is, the opening area is three or more times to several tens of times larger than the water flow area set by the suction capacity of the pump 3 and the cross-sectional area of the circulation pipe 5. are the size of the pool body A, the cross-sectional area associated with the pipe diameter of the circulation pipe 5 that changes in proportion to the size of the pool body A, and the suction capacity that can effectively circulate and flow dirty water throughout the pool. The size of the pump 3 provided and the pit 6 formed on the bottom wall _A1 of the pool body A, that is, the size of the pit 6 formed in the bottom wall A1 of the pool body A, are determined by taking into consideration the purification effect due to the effective circulation flow of dirty water throughout the pool. .

In addition, C in the figure is a deck provided on the upper end peripheral part of the pool body A, and in the illustrated example, it is molded separately from the side plate b, and is attached and fixed to the side plate b by tightening bolts.

Reference numeral 15 denotes a roughly dome-shaped bulge formed on the side plate b to increase the strength of the side plate b, and has a flat portion 16 in the center. The side plate b provided with the circulation outlet 2 has a larger plane portion 16 than the side plate b not provided with the circulation outlet 2, and the circulation outlet 2 is provided on the plane portion 16.

Moreover, 17 is a reinforcement that supports the side plate b from the outside against the water pressure in the pool.

In the above embodiment, the circulation inlet 1 is formed over almost the entire length of the pool body A in the width direction.
Depending on the size of the pool main body A, it is not necessarily necessary to form it so as to cover almost the entire length in the width direction, and it may be sufficient to form it to 1/2 or less in the width direction.

In the above, the present invention has been explained based on the illustrated embodiment only for a prefabricated pool, moreover, a prefabricated pool with a special structure, but it is equally applicable to other types of pools, such as general concrete pools. The usefulness is obvious.

<Effects of the invention> Since the pool of the invention is constructed as described above, it has the following effects.

(1) A circulation outlet is installed on each side wall of the pool body,
A circulation inlet is formed in the center of the bottom wall of the pool body, and the dirty water throughout the pool is circulated in the center of the bottom wall by the blowing force (water pressure) of the circulating water blown out from the circulation outlet on each side wall. Since the system effectively guides and flows the water to the suction port and suctions it out from the suction port, it efficiently suctions and flows it to the purifier in the middle of the circulation pipe, so even if it is a large pool, the dirty water in the entire pool can be removed. It can be efficiently purified by effectively circulating and flowing the water.

(2) For the lid to be attached to the entire surface of the opening of the pit, reinforcing bodies made of resin concrete are fixed to appropriate places on the back side of the FRP plate, and the entire surface except for the part where the reinforcing bodies are attached is designed to increase the suction capacity of the pump and cut off the circulation pipe. The reinforcement body made of resin concrete is installed on the back side of the plate because the many small holes are dispersed and drilled to ensure an opening area that is three or more times to several tens of times larger than the water flow area set by the area. It is fixed and integrated, so it has the necessary weight to prevent it from separating from the pit opening and floating up, and it is also durable against chlorine, which is used as a disinfectant and disinfectant for pool water, for long-term use. It will not get corroded. Therefore, it is possible to prevent cracking and damage caused by corrosion and deterioration, and the lid structure maintains sufficient strength, which is beneficial.

(3) The circulation inlet in the center of the bottom wall is constructed by providing a gutter-like pit in the center of the bottom wall of the pool body, and covering the opening with a lid with many small holes dispersed over the entire surface. The large number of small holes that distribute the opening area of the lid allows for a water flow area of 3.
Since the opening area is more than twice or several tens of times larger, even if a part of the circulation inlet is blocked with a towel, etc., the suction force of the pump will not concentrate on the part that remains unblocked. The part that remained intact,
That is, even with small holes dispersed over a wide range, a necessary and sufficient water flow area can be ensured without excessively increasing the suction force. As a result, small children may be sucked in by the powerful suction force and become unable to move.
There is no danger of losing your footing.

Thus, the intended purpose can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the swimming pool of the present invention, partially cut away. 2 is a cross-sectional view taken along the line X--X of FIG. 1, and FIG. 3 is an enlarged vertical cross-sectional view of the main part, partially cut away. Fourth
The drawings are a sectional view taken along the line Y--Y in FIG. 3, FIG. 5 is a perspective explanatory view of the main parts, and FIG. 6 is a perspective view of the lid with a portion cut away. In the diagram, A...Pool body, 1...Circulation inlet,
2... Circulation outlet, 3... Pump, 4... Purifier, 5... Circulation pipe, 6... Pit, 7... Small hole, 8... Lid, 13... Plate, 14... Reinforcement body.

Claims (1)

[Scope of utility model registration request] In a pool in which a circulation outlet and a circulation inlet are connected outside the pool body by a circulation pipe equipped with a pump and a purifier in the middle, the circulation outlet is arranged at required locations on each side wall of the pool body. For the circulation inlet, a gutter-like pit is provided in the center of the bottom wall of the pool body, and reinforcing bodies made of resin concrete are fixed to appropriate locations on the back of the FRP plate over the entire opening, and the reinforcing bodies are attached. It is covered with a lid with many small holes dispersed over the entire surface except for the parts,
The opening area of the lid is made up of a large number of dispersed small holes, which is at least three times to several tens of times larger than the water flow area set by the suction capacity of the pump and the cross-sectional area of the circulation pipe. Featured pool.