Dual drive counterflow generator

Abstract

The application discloses a double-drive counter-current generator, which comprises a mounting frame, a shell and driving units, the rear end surface of the shell is connected to the edge of a swimming pool through the mounting frame, the side wall and / or the bottom wall of the shell are uniformly distributed with a plurality of water inlet holes, the inside of the shell is a containing cavity, the two driving units are fixed in the containing cavity in parallel and at intervals along the axial direction of the shell, the outer periphery of each driving unit is respectively sleeved with an independent cylindrical filter cover, the cylinder wall of the filter cover is provided with a plurality of filter holes, the front end surface of the shell is respectively provided with a water outlet plate corresponding to the position of the driving unit, the water outlet plate is provided with a water outlet hole, and the water flow generated after the push-flow blade of each driving unit rotates is output through the corresponding water outlet plate. The double-drive counter-current generator has the advantages of reasonable structural layout, double-drive efficient cooperation, strong and stable output water flow, convenient maintenance and high practicability.

Description

Technical Field

[0001] This application relates to the field of swimming pool equipment technology, and more particularly to a dual-drive countercurrent generator. Background Technology

[0002] With the increasing demand for swimming and aquatic rehabilitation training, standard swimming pools are limited by their large footprint and high construction and maintenance costs. Smaller pools and aquatic training devices that generate counter-currents are gaining attention. These devices create circulating water or artificial waves within the pool, allowing users to perform resistance-based swimming training or rehabilitation exercises in a limited space. These devices utilize motor-driven blades to divert liquid, thereby achieving a large axial flow rate.

[0003] Currently, to generate a stronger and more continuous countercurrent in small swimming pools, some training equipment uses multiple drive units, such as water pumps or impellers, to increase the overall water propulsion capacity. However, simple dual-drive parallel configurations still have some shortcomings in practical use. First, when multiple drive units are installed in a shared chamber, if part of the overall filter shroud is blocked by debris, it will affect the uniformity of water intake for all drive units, leading to an imbalance in the water flow output of each drive unit. The water intake areas overlap and interfere with each other, easily causing water competition, resulting in uneven water intake and unbalanced load for each drive unit. This not only fails to achieve the expected overall efficiency but also easily generates turbulence and noise, affecting the training experience. Second, existing structures usually converge the front-end water output of all drive units into a large common outlet. This causes the countercurrents generated by different drive units to impact each other at close range, resulting in energy loss and making it difficult to merge into a stable and uniform countercurrent.

[0004] Therefore, there is an urgent need for a countercurrent generator that enables the dual-drive devices to work together efficiently, has sufficient countercurrent strength and stable water flow, and is easy to maintain independently. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned technical problems and provide a dual-drive countercurrent generator. The countercurrent generator of this application has a dual-drive structure with high efficiency and synergy, strong and stable output water flow, and is easy to maintain and highly practical.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: A dual-drive countercurrent generator includes a mounting bracket, a housing, and drive units. The rear end face of the housing is connected to the edge of a swimming pool via the mounting bracket. Several water inlet holes are evenly distributed on the side walls and / or bottom wall of the housing. The interior of the housing is a receiving cavity, and two drive units are fixed side-by-side and spaced apart within the receiving cavity along the axial direction of the housing. Each drive unit is fitted with an independent cylindrical filter cover, the inner cavities of which are not interconnected. Several filter holes are formed on the cylindrical wall of each filter cover, the length direction of which is perpendicular to the length direction of the water inlet holes. The front end of the housing... Each of the drive unit's surfaces is equipped with a water outlet plate corresponding to its position. The water outlet plate has water outlet holes. The water outlet area formed by the water outlet holes of each water outlet plate is adapted to and smoothly connected to the front opening shape of the corresponding filter cover, so that the inner cavity of each filter cover forms an independent flow channel. The axial length of the filter cover is greater than the overall axial layout length of the drive unit, so that the portion of the flow channel longer than the drive unit forms a water flow confluence area at its front end. The water flow generated after the pusher blades of each drive unit rotate are guided by the corresponding water outlet plate and then output.

[0007] In this application, the invention sets up two drive units arranged axially side by side and spaced apart, and independently sets up cylindrical filter covers with non-communicating inner cavities around the periphery of each drive unit. This allows each drive unit to have independent water inlet and propulsion channels, isolating the inner cavities of each filter cover from each other. This effectively avoids water competition that may occur due to overlapping water inlet areas during dual-drive operation, ensuring that the countercurrent generated by each drive unit has sufficient strength and high water flow stability. At the same time, the water flow confluence area ensures that each drive unit has a sufficient and uniform propulsion water volume during operation. The front end of each filter cover has an independent water outlet plate, forming two independent propulsion channels with continuous inner walls. This prevents the two water flows from impacting and interfering with each other during the output process, reducing turbulence and energy loss, thereby enabling a more stable, strong, and uniform countercurrent output. The vertical layout of the filter holes and water inlet holes enhances the anti-clogging ability, and since the filter covers are set separately, clogging of one filter cover is less likely to affect the operation of the other drive unit, facilitating unitized maintenance and improving the product's operating efficiency and user experience.

[0008] In one embodiment, a first fixing plate is provided inside the receiving cavity on the inner end face of the water outlet plate. The first fixing plate is provided with a first fixing hole corresponding to the size of the filter cover. The front end of the filter cover is respectively embedded in the first fixing hole.

[0009] In one embodiment, a second fixing plate is installed on the inner wall of the housing near the mounting bracket. The second fixing plate has a second fixing hole corresponding to the size of the filter cover. The rear end of the filter cover near the mounting bracket is embedded in the second fixing hole.

[0010] In one embodiment, the drive unit includes a drive motor, a connecting frame is mounted on the bottom of the drive motor, the connecting frame extends with a fixing foot, and the drive motor is fixed to the inner wall of the housing via the fixing foot.

[0011] In one embodiment, the drive motor is fitted with symmetrically arranged limiting frames on its outer side. The middle of each of the two limiting frames has an arc-shaped opening that surrounds and forms a limiting hole, which fits the drive motor. The limiting frames extend with legs and are fixed to the inner wall of the housing.

[0012] In one embodiment, the water outlet holes are arranged in a honeycomb or radial pattern.

[0013] In one embodiment, the tilt angle or horizontal height between the housing and the mounting bracket is adjustable.

[0014] In one embodiment, the sidewall connecting the outer shell to the mounting bracket is a mounting plate. The mounting bracket includes a connecting plate and a support plate that are perpendicularly connected to each other. The connecting plate has multiple elongated adjustment holes. The mounting plate is threadedly fixed to the connecting plate by fasteners passing through the adjustment holes to form the adjustable tilt angle. The outer shell is hung against the sidewall of the pool by the support plate.

[0015] In one embodiment, the support plate has an independent inner cavity; the inner cavity of the support plate constitutes a low-voltage chamber for arranging circuit boards and wiring. Attached Figure Description

[0016] Figure 1 Overall structural diagram of the dual-drive countercurrent generator provided by this utility model; Figure 2 A structural diagram showing the installation state of the filter cover provided by this utility model; Figure 3 An exploded view of the dual-drive countercurrent generator provided by this utility model; Figure 4 A structural cross-sectional view of the dual-drive countercurrent generator provided by this utility model; Figure 5 Another structural cross-sectional view of the dual-drive countercurrent generator provided by this utility model; Figure 6 An exploded view of the structure of the limiting frame provided by this utility model; Figure 7 A schematic diagram of another water outlet plate provided by this utility model. Detailed Implementation

[0017] This application provides a dual-drive countercurrent generator to solve the technical problem that existing countercurrent trainers have simple structures and unreasonable settings, and the countercurrents generated by different drive devices impact each other and lose energy at close range, making it difficult to merge them into a stable and uniform countercurrent.

[0018] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] Please see Figures 1 to 7 Embodiment 1 of this application provides a dual-drive countercurrent generator, including a mounting bracket 10, a housing 20, and a drive unit 30. The rear end face of the housing 20 is connected to the edge of a swimming pool via the mounting bracket 10. A plurality of water inlet holes 22 are evenly distributed on the side walls and / or bottom walls of the housing 20. The interior of the housing 20 is a receiving cavity 23, and two drive units 30 are fixed side-by-side and spaced apart along the axial direction of the housing 20 within the receiving cavity 23. Each drive unit 30 is fitted with an independent cylindrical filter cover 40, the inner cavities of each filter cover 40 are not interconnected, and the cylindrical wall of each filter cover 40 has a plurality of filter holes 41, the length direction of which is perpendicular to the length direction of the water inlet holes 22. Straight; Water outlet plates 50 corresponding to the positions of the drive unit 30 are respectively installed on the front end face of the outer shell 20. The water outlet plates 50 are provided with water outlet holes 51. The water outlet area formed by the group of water outlet holes 51 of each water outlet plate 50 is adapted to the shape of the front opening of the corresponding filter cover 40 and smoothly connected, so that the inner cavity of each filter cover 40 forms an independent push flow channel. The axial length of the filter cover 40 is greater than the overall axial layout length of the drive unit 30, so that the part of the push flow channel longer than the drive unit 30 forms a water flow confluence area at its front end. The water flow generated after the push flow blades 31 of each drive unit 30 rotate is guided by the corresponding water outlet plate 50 and then output.

[0020] Specifically, the rear end face of the outer casing 20 is mounted on the mounting bracket 10, which is hung against the edge of the pool and can form a certain tilt angle with the outer casing 20, so that the output can present a certain angle when the flow is reversed. The cylindrical outer casing 20 allows water to enter the receiving cavity 23 evenly and with low resistance from all directions, avoiding the stress concentration phenomenon caused by square or irregularly shaped containers at the corners, which can effectively improve the overall structural strength, reliability and long service life of the equipment. The other surfaces of the outer casing 20 are covered with water inlet holes 22, and the middle of the upper surface of the outer casing 20 is a flat and closed surface 21. In use, the upper surface of the outer casing 20 is located on the upper surface of the pool, and the upper surface of the pool is prone to the accumulation of garbage. The closed outer surface effectively prevents swimming debris from accumulating on the upper surface of the pool. Debris and garbage in the pool enter the receiving cavity 23 via the upper surface, causing blockage and affecting the operation of the drive unit 30. Two drive units 30 are installed side by side and spaced apart in the receiving cavity 23. Each drive unit 30 is surrounded by a cylindrical filter cover 40. The surface of the filter cover 40 has filter holes 41. In this embodiment, both the water inlet hole 22 and the filter hole 41 are elongated, which can effectively filter debris while ensuring water intake efficiency. Of course, water inlet holes 22 of other shapes can also achieve the filtration effect. Moreover, the length direction of the water inlet hole 22 is perpendicular to the length direction of the filter hole 41, so that the debris passing through the water inlet hole 22 can be further filtered when passing through the filter hole 41, improving the filtration effect while ensuring the same filtration area. The front end face of the outer shell 20 is the water outlet face, and two water outlet plates 50 are provided corresponding to the position of the drive unit 30. Water outlet holes 51 are distributed on the water outlet plates 50, and the area of ​​the group of water outlet holes 51 constitutes the water outlet area. Two through holes are opened on the front end face of the outer shell 20, which correspond to the stepped shape of the front end face of the water outlet holes 51, so that the front end of the water outlet plate 50 is locked in the through holes, forming a flat surface on the front end face of the outer shell 20, avoiding the risk of collision caused by external protrusions. The size of the water outlet area corresponds to the size of the filter cover 40, thus forming a continuous channel between the water outlet area and the filter cover 40. This allows the drive unit 30 in the inner cavity of the filter cover 40 to drive the pusher blades 31 to rotate, and the resulting counterflow can be output along the smooth interior. After being rectified by the water outlet holes 51, the counterflow is output. The water outlet holes 51 can have different shapes, thus producing different rectification effects. In addition, the overall axial length of the filter cover 40 is greater than the length of the drive unit 30, forming a water flow confluence area at the front end of the drive unit 30. This allows the filtered water to be pre-stored in the water flow confluence area, ensuring sufficient water in the push channel and guaranteeing the generation of a uniform and strong countercurrent.

[0021] See further Figure 3A first fixing plate 24 is provided inside the receiving cavity 23 on the inner end face of the water outlet plate 50. The first fixing plate 24 has first fixing holes 241 corresponding to the size of the filter cover 40. The front end of the filter cover 40 is respectively embedded in the first fixing holes 241. A second fixing plate 25 is installed on the inner wall of the outer shell 20 near the mounting bracket 10. The second fixing plate 25 has second fixing holes 251 corresponding to the size of the filter cover 40. The rear end of the filter cover 40 near the mounting bracket 10 is embedded in the second fixing holes 251. A first fixing plate 24 and a second fixing plate 25 are respectively provided at the front and rear ends of the receiving cavity 23. The first fixing plate 24 is fitted to the inner end face of the water outlet plate 50. The first fixing hole 241 opened in the middle corresponds to the size of the filter cover 40. The second fixing plate 25 is fixed on the rear side wall of the receiving cavity 23. The second fixing hole 251 is adapted to the outer circumferential size of the filter cover 40. Thus, by embedding the two ends of the filter cover 40 into the first fixing hole 241 and the second fixing hole 251 respectively, each filter cover 40 can be accurately embedded and positioned. This not only improves the axial installation accuracy and overall structural stability of the filter cover 40, but also effectively ensures the accurate alignment of the inlet of each flow channel, which is conducive to the smooth introduction and output quality of water flow.

[0022] See further Figures 4 to 6 The drive unit 30 includes a drive motor 32, with a connecting frame 60 mounted on the bottom of the drive motor 32. The connecting frame 60 extends with fixing feet 61, and the drive motor 32 is fixed to the inner wall of the housing 20 via the fixing feet 61. The drive unit 30 consists of the drive motor 32 and push vanes 31 mounted on the shaft of the drive motor 32. The drive motor 32 is preferably a brushless motor, but it can also be other motors, such as permanent magnet motors, frequency converter motors, or other waterproof motors. Furthermore, the drive unit 30 operates at low voltage, below 36 volts. This low-voltage operating environment provides high safety, and when the drive motor 32 needs to be repaired or replaced, operators do not need to come into contact with high-voltage electricity, making the maintenance process safer and simpler. The bottom of the drive motor 32 is fixedly connected to the housing 20 via a connecting bracket 60. The connecting bracket 60 has fixed feet 61 extending from both sides with the end edges folded outward. The fixed feet 61 are fixed to the side wall of the housing 20 via threaded connection, which makes the installation of the drive motor 32 more stable and can effectively disperse the vibration and load during motor operation, reduce noise and structural fatigue caused by vibration, and facilitate installation.

[0023] Furthermore, symmetrically arranged limiting brackets 70 are fitted around the outer side of the drive motor 32. Each of the two limiting brackets 70 has an arc-shaped opening 71 in its center, which together form a limiting hole. The driving motor 32 is fitted into this limiting hole. Each limiting bracket 70 extends a support leg 72, which is fixed to the inner wall of the outer casing 20. The arc-shaped openings 71 of the symmetrically arranged limiting brackets 70 surround the outer periphery of the middle part of the drive motor 32 and are fixed together by threaded connections. The positions of the extended support legs 72 of the limiting brackets 70 are staggered from the fixed feet 61 and are fixedly connected to the outer casing 20 by screws or studs. This provides radial limiting and local reinforcement for the drive motor 32, preventing radial movement or swaying during operation, and further ensuring transmission stability and equipment lifespan.

[0024] See further Figure 7 The water outlet holes 51 are arranged in a honeycomb or radial pattern. In this embodiment, the water outlet holes 51 of the water outlet plate 50 are preferably distributed in a honeycomb or reflective pattern, so that different flow rectification effects can be generated by different distribution shapes of the water outlet holes 51. Among them, the honeycomb arrangement can make the water outlet more uniform and dense, reduce eddies, and the size of the honeycomb holes can be adjusted according to specific needs; while the radial arrangement can form a water flow pattern that is concentrated in the center and diffuses outward, and the density of the radial holes can also be adjusted according to specific needs, so that the form of backflow generation is diverse and can be adapted to more application scenarios.

[0025] Furthermore, the tilt angle or horizontal height between the outer shell 20 and the mounting bracket 10 is adjustable. The side wall connecting the outer shell 20 and the mounting bracket 10 is a mounting plate 26. The mounting bracket 10 includes a connecting plate 11 and a support plate 12 that are perpendicularly connected to each other. The connecting plate 11 has a plurality of elongated adjustment holes 111. The mounting plate 26 is threadedly fixed to the connecting plate 11 by fasteners passing through the adjustment holes 111 to form the adjustable tilt angle. The outer shell 20 is hung against the side wall of the pool through the support plate 12. During installation, the upper support plate 12 is attached to the edge of the pool, and the rear end of the outer shell 20 is connected and fixed to the support plate 12, allowing the outer shell 20 and other internal components to be installed on the side wall of the pool. Furthermore, by using a connecting plate 11 with an elongated adjustment hole 111 to cooperate with the mounting plate 26 of the outer shell 20, the tilt angle can be infinitely or continuously adjusted in segments. Users can adjust the tilt angle between the outer shell 20 and the mounting bracket 10 by tightening or loosening the fasteners and adding shims to the fasteners, thereby adjusting the water outlet angle generated by the backflow. In addition, because the adjustment hole 111 is elongated, the installation height of the outer shell 20 can also be adjusted to a certain extent. This adjustment method is simple, reliable, and securely locked, making it easy for users to customize according to different training goals or pool depths, thus improving the product's practicality.

[0026] Furthermore, the support plate 12 has an independent inner cavity; the inner cavity of the support plate 12 constitutes a low-voltage chamber for arranging circuit boards and wiring; the low-voltage chamber is used to centrally arrange control circuit boards and connecting lines, so that the control unit is located in a relatively dry environment outside the pool, realizing physical isolation between the low-voltage system and the humid environment inside the pool, improving electrical safety and anti-interference ability, while facilitating inspection and maintenance.

[0027] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A dual-drive countercurrent generator, comprising a mounting bracket, a housing, and a drive unit, characterized in that, The rear end face of the outer shell is connected to the edge of the pool via a mounting bracket; the side walls and / or bottom walls of the outer shell have a number of water inlet holes evenly distributed thereon. The interior of the outer shell is a receiving cavity, and the two drive units are fixed in the receiving cavity side by side and at intervals along the axial direction of the outer shell; Each of the drive units is fitted with an independent cylindrical filter cover on its outer periphery. The inner cavities of each filter cover are not interconnected. The cylindrical wall of each filter cover has a number of filter holes. The length direction of the filter holes is perpendicular to the length direction of the water inlet hole. The front end face of the outer shell is respectively equipped with water outlet plates corresponding to the positions of the drive units. The water outlet plates have water outlet holes. The water outlet area formed by the water outlet holes of each water outlet plate is adapted to and smoothly connected to the front opening shape of the corresponding filter cover, so that the inner cavity of each filter cover forms an independent flow channel. The axial length of the filter cover is greater than the overall axial layout length of the drive unit, so that the part of the flow channel longer than the drive unit forms a water flow confluence area at its front end. The water flow generated after the pusher blades of each drive unit rotate are guided by the corresponding water outlet plates and then output.

2. The countercurrent generator according to claim 1, characterized in that, A first fixing plate is provided on the inner end face of the water outlet plate inside the receiving cavity. The first fixing plate is provided with a first fixing hole corresponding to the size of the filter cover. The front end of the filter cover is respectively embedded in the first fixing hole.

3. The countercurrent generator according to claim 2, characterized in that, A second fixing plate is installed on the inner wall of the outer casing near the mounting bracket. The second fixing plate has a second fixing hole corresponding to the size of the filter cover. The rear end of the filter cover near the mounting bracket is embedded in the second fixing hole.

4. The countercurrent generator according to claim 1, characterized in that, The drive unit includes a drive motor, a connecting frame is mounted on the bottom of the drive motor, the connecting frame extends with a fixing foot, and the drive motor is fixed to the inner wall of the housing through the fixing foot.

5. The countercurrent generator according to claim 4, characterized in that, The drive motor is fitted with symmetrically arranged limiting frames on its outer side. The middle of each of the two limiting frames has an arc-shaped opening that surrounds and forms a limiting hole. The driving motor is fitted into the limiting hole. The limiting frame extends with legs and is fixed to the inner wall of the outer shell.

6. The countercurrent generator according to claim 1, characterized in that, The water outlet holes are arranged in a honeycomb or radial pattern.

7. The countercurrent generator according to claim 1, characterized in that, The tilt angle or horizontal height between the housing and the mounting bracket is adjustable.

8. The countercurrent generator according to claim 7, characterized in that, The side wall connecting the outer shell to the mounting frame is a mounting plate. The mounting frame includes a connecting plate and a support plate that are perpendicularly connected to each other. The connecting plate has multiple elongated adjustment holes. The mounting plate is fixed to the connecting plate by fasteners passing through the adjustment holes to form the adjustable tilt angle. The outer shell is hung against the side wall of the pool through the support plate.

9. The countercurrent generator according to claim 8, characterized in that, The support plate has an independent inner cavity; the inner cavity of the support plate constitutes a low-voltage chamber for arranging circuit boards and lines.

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