Patent Application
20250215717
The present disclosure relates to the field of water surface cleaning technology, specifically, it relates to a structure of pool cleaning robot and a pool cleaning robot with the structure.
The pool water surface robot floats on the water surface during the cleaning process, and its main power relies on the propeller installed at its rear. Although an ordinary propeller can meet the requirements of movement operations on the normal water surfaces, the overall traveling speed of the robot is relatively low and it cannot meet the cleaning needs of large-area pools, and the stability is rather poor.
The technical problem to be solved by the present disclosure is to provide a structure of pool cleaning robot and a pool cleaning robot with the structure in view of the above deficiencies.
To solve the above technical problems, the present disclosure adopts the following technical solutions.
A structure of pool cleaning robot includes a body, at least one driving unit arranged at one end of the body, a propeller arranged at the output end of the driving unit, and anti-vortex fins arranged on the propeller.
A pool cleaning robot includes the structure as above.
Further, the rotation direction of the anti-vortex fin is the same as that of the blades of the propeller.
Further, the number of anti-vortex fins is the same as that of the blades of the propeller.
Further, the anti-vortex fins are arranged in parallel with the blades of the propeller and have approximately the same shape.
Further, the propeller includes a fairing cap, and the anti-vortex fin is arranged on the outside of the fairing cap.
Further, the fairing cap is a hollow cylindrical-like body, and the fairing cap is sleeved on the propeller.
Further, the fairing cap is a hollow conical-like body, the fairing cap is sleeved at one end of the propeller, and the surface of the fairing cap is a curved surface or a hemispherical surface.
Further, the axial distance between the blades of the propeller and the anti-vortex fins is ⅓ to 1 time of the radial length of the anti-vortex fin.
Further, the length of the anti-vortex fin is ⅕ to ½ time of the length of the blades of the propeller.
Further, the fairing cap is detachably arranged on the propeller.
The present disclosure adopts the above technical solutions, compared with the prior art, it has the following advantages.
The present disclosure adopts propeller propulsion, and an anti-vortex fin is arranged at the rear end of the propeller, which can eliminate the hub vortex cavitation generated by the propeller, so as to reduce the pressure at the rear of the propeller and further reduce the induced resistance caused by the hub vortex cavitation, thereby improving the propulsion efficiency of the propeller. During the rotation process, the anti-vortex fin can also generate a certain thrust, increasing the total thrust of the propeller. At the same time, the anti-vortex fin can effectively reduce the noise and vibration amplitude generated by the propeller and improve the stability of the body during working.
The following is a detailed description of the present disclosure in combination with the attached drawings and embodiments.
In the attached drawings, the list of components represented by each reference number is as follows:
1. Body; 11. Water inlet; 12. Flow-guiding channel; 13. Grip; 14. Guide wheel; 15. Protective cover; 2. Garbage collection bin; 21. Drain outlet; 22. Collection inlet; 23. Movable bottom plate; 3. Propeller bracket; 4. Driving unit; 5. Propeller; 51. Fairing cap; 52. Anti-vortex fin; 6. Roller; 61. Paddle.
The following describes the principles and characteristics of the present disclosure in combination with the attached drawings. The embodiments cited are only for explaining the present disclosure and are not for limiting the scope of the present disclosure.
In the description of the present disclosure, it should be noted that terms such as “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inside”, “outside”, “clockwise” and “counterclockwise” indicate directions or positional relationships based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present disclosure.
As shown in
The number and position of the propellers can be set according to actual needs.
Various mechanisms that propel water surface robots forward are collectively called thrusters. Thrusters include propellers, water jet thrusters, cycloidal thrusters, paddle wheels, and Z-drive thrusters, etc. Among them, a propeller is a reaction-type propulsion device. When a propeller rotates, it pushes water backward (or forward) and is subjected to the reaction force of water to generate a forward (or backward) thrust. The propeller has a simple structure, is lightweight, has high efficiency, and is reliable in operation. It is currently the most widely used thruster. The thruster of the present disclosure is a propeller.
When a ship is sailing on the water surface, the water flow on the surface of the propeller will flow along the rotation direction of the propeller. As a result, a low pressure is formed at the center position of the rear end of the fairing cap of the propeller, and hub vortex cavitation is generated. This hub vortex cavitation can induce resistance and reduce the efficiency of the propeller.
To address this issue, along the advancing direction of the body, the present disclosure adds an anti-vortex fin 52 at the rear end of the propeller 5, which enables the surface water flow to almost flow out linearly along the anti-vortex fin 52 and disperse from the rear of the fairing cap 51, thereby weakening the hub vortex cavitation, reducing the pressure at the rear of the propeller 5 and the induced resistance, and thus improving the propulsion efficiency of the propeller 5. At the same time, the anti-vortex fin 52 can also reduce propeller noise and propeller vibration amplitude, and improve the stability of the surface ship on the water surface.
In this embodiment, the propellers are respectively arranged on both sides of the rear side of the body 1, and the anti-vortex fin 52 is set as a counter-rotating vortex, which will induce upwash of the internal airflow of the anti-vortex fin 52. According to Newton's third law (action and reaction), the upwashed airflow inside the anti-vortex fin 52 (including the propeller, because the anti-vortex fin 52 rotates synchronously with the propeller), including the counter-rotating vortex, exerts a reaction force, namely downward pressure and resistance, on the anti-vortex fin 52 (and the propeller). Such a setting enables the body 1 to float on the water surface better. And when it is going ashore or climbing steps, this downward pressure will also be of certain help.
In an embodiment of the present disclosure, a flow-guiding channel 12 is arranged in the middle part of the bottom end of the body 1, and the flow-guiding channel 12 connects the front and rear end faces of the body 1.
As shown in
As an implementation mode, a roller 6 is arranged inside the collection inlet 22. The roller 6 is horizontally arranged at the upper part of the collection inlet 22, and the rotating shaft of the roller 6 is perpendicular to the flow-guiding channel 12. A plurality of paddles 61 are arranged on the outside of the roller 6. A driving mechanism connected to the roller 6 is arranged inside the body 1, and the driving mechanism is used to drive the roller 6 to rotate.
When the driving mechanism drives the roller 6 to rotate, the roller 6 rotates at the collection inlet 22 and drives the paddle 61 to rotate. Through the rotation of the paddle 61, the garbage on the water surface will be pulled into the garbage collection bin 2.
As shown in
As shown in
As an implementation mode, a grip 13 is arranged at the front end of the body 1.
As shown in
In an embodiment of the present disclosure, on both sides of the rear end of the body 1, there is a propeller bracket 3. A driving unit 4 is arranged at the bottom of the propeller bracket 3. A propeller 5 is arranged at the output end of the driving unit 4. The driving unit 4 drives the propeller 5 to rotate. The rotation directions of the propellers 5 on both sides of the body 1 are opposite. When steering is needed, the rotation speed of the two propellers 5 is changed by the driving unit 4. The steering of the body 1 is achieved by adjusting the speed difference between the two propellers 5 (in this embodiment, the driving unit 4 includes two motors directly driving the propeller 5 to rotate. It is also possible to drive the propeller 5 to rotate by using a dual-shaft motor in conjunction with different reduction gears).
As shown in
The rotation angle of the anti-vortex fin 52 is the same as or similar to the rotation angle of the blade. In this embodiment, the number of the anti-vortex fins 52 is the same as the number of the blades. The anti-vortex fins 52 are arranged in parallel one-to-one with the blades. The shape of the anti-vortex fin 52 is the same as or similar to the shape of the blade. The inclination angle of the anti-vortex fin 52 is the same as or close to that of the blade. The axial distance between the anti-vortex fin 52 and the blade is ⅓ to 1 times the radius of the blade of the anti-vortex fin 52. The area of the anti-vortex fin 52 is ½ to ⅕ of the area of the blade. In this embodiment, the area of the anti-vortex fin 52 is ¼ of the area of the blade.
The fairing cap 51 is fixed at the rear of the propeller 5 and is fixed in a wedge-shaped manner, which can ensure normal rotational movement. The fairing cap 51 is also fixed by magnetic attraction. In this way, users can choose to install or remove the fairing cap. At the same time, the fairing caps with different sizes can be replaced according to needs. In one implementation, the material of the fairing cap is metal.
In an embodiment, the fairing cap 51 can be a hollow cylindrical-like body, and the anti-vortex fins 52 are arranged on the periphery of this cylindrical body. At this time, the fairing cap 51 is sleeved on the propeller 5. In another embodiment, the fairing cap can be a hollow conical-like body, and the anti-vortex fins 52 are arranged on the periphery of this conical body. At this time, the fairing cap 51 is sleeved on one end of the propeller. At this time, the surface of the fairing cap is a curved body or a hemispherical surface. Its surface curvature is further determined by the layout space and the size of the propeller blades.
Preferably, the number of propellers 5 is two, which are respectively arranged on both sides of the rear end of the body 1; and the rotation directions of the propellers 5 on both sides of the body are opposite (inward). In other implementation modes, the number of the propellers 5 can be set as needed. It can be understood that the number of drive motors in the drive unit 4 can also be set as needed. For example, drive motors and corresponding propellers 5 are arranged at both the front and rear of the two-way water surface cleaning robot.
As shown in
As shown in
Three blades are arranged on the outside of the propeller 5. A fairing cap 51 is arranged at the rear end of the propeller 5, and three anti-vortex fins 52 are arranged on the outside of the fairing cap 51. The angle of the anti-vortex fins 52 is the same as that of the blades of the propeller 5. The shape of the anti-vortex fins 52 is the same as that of the blades of the propeller 5. The area of the anti-vortex fins 52 is ⅕ to ½ of that of the blades of the propeller 5, and the length of the anti-vortex fins 52 is ⅕ to ½ of that of the blades of the propeller 5. The material of the anti-vortex fins 52 is metal.
In an embodiment of the present disclosure, a pool cleaning robot includes the structure as described with reference to
The above descriptions are examples of the best implementation modes of the present disclosure. The parts that are not described in detail are common knowledge of those of ordinary skill in the art. The protection scope of the present disclosure is subject to the content of the claims. Any equivalent transformation based on the technical inspiration of the present disclosure is also within the protection scope of the present disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2023236645579 | Dec 2023 | CN | national |
