Shaftless propeller
By using a ring-shaped design for the shaftless propeller, the shaft system of traditional propellers is eliminated. The ring body is driven to rotate by an electric motor, and the blades optimize hydrodynamic performance, solving the mechanical losses and noise problems of traditional underwater propulsion systems and improving the adaptability and efficiency of the propeller.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-03-27
AI Technical Summary
Traditional underwater propulsion systems rely on exposed propellers, which suffer from bearing friction and mechanical losses, high vibration and noise, and blade design cannot dynamically adapt to complex fluid environments, resulting in cavitation effects and limitations in biomimetic noise reduction.
Design a shaftless propeller that uses an annular body and multiple blades to eliminate the shaft system. The annular body is driven to rotate by a motor. The blades are formed by a first blade, a second blade, and an annular transition section, which optimizes hydrodynamic performance and reduces tip vortices and noise.
Reduce mechanical energy loss and vibration noise, improve the adaptability of the thruster, avoid collision and entanglement accidents, improve propulsion efficiency, and suppress noise and cavitation phenomena.
Smart Images
Figure CN224045411U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of underwater propeller, in particular to an axisless propeller. BACKGROUND
[0002] The conventional underwater propulsion system mainly relies on the bare propeller, and its working principle is to push the water flow through the rotating blades to generate thrust. When the conventional underwater propulsion system works, the conventional propeller is connected to the engine through a long shaft, which brings about bearing friction and other forms of mechanical loss; the vibration and noise generated during the operation of the long shaft are large, which is not conducive to the tasks with high concealment requirements, such as military reconnaissance or scientific research. At the same time, the conventional blade design is still limited to fixed geometry, which cannot dynamically adapt to complex fluid environment, and has limitations in cavitation effect suppression and bionic noise reduction. CONTENT
[0003] The purpose of the embodiment of the present application is to provide an axisless propeller to eliminate the shaft structure of the conventional propeller, reduce mechanical energy loss and vibration noise, and improve the propulsion efficiency.
[0004] In a first aspect, the utility model provides an axisless propeller, which comprises a ring body and a plurality of blades, the plurality of blades are connected with the inner wall of the ring body, and the plurality of blades are arranged at equal angles around the center of the ring body along the inner wall of the ring body.
[0005] The blade comprises a first blade body, a second blade body and a ring transition section, the first end of the first blade body and the first end of the second blade body are arranged at intervals and are connected with the inner wall of the ring body respectively, and the second end of the first blade body and the second end of the second blade body are connected with the two ends of the ring transition section respectively.
[0006] In an optional embodiment, the vertical direction of the ring body from the first side to the second side is the first direction, and the first blade body and the second blade body are parallel and arranged obliquely relative to the first direction.
[0007] In an optional embodiment, the protruding structure is arranged on the blade, and the protruding structures on the plurality of blades are directed to the same side.
[0008] In an optional embodiment, the protruding structure is arranged along the outer edge of one side of the first blade body and the outer edge of one side of the second blade body.
[0009] In an optional embodiment, the protruding structure comprises at least a sawtooth structure and a wave structure.
[0010] In an optional embodiment, the first blade body and the second blade body are designed as curved surfaces.
[0011] In an optional embodiment, the annular body and the plurality of blades are integrally formed.
[0012] Alternatively, the inner wall of the annular body is provided with a plurality of grooves, the first blade body and the second blade body are arranged in the grooves, and the first blade body and the second blade body are welded to the annular body.
[0013] In an optional embodiment, the blades include a first blade and a second blade, the first blade is arranged close to a first side of the annular body, and the second blade is arranged close to a second side of the annular body.
[0014] In an optional embodiment, the first blade and the second blade are arranged side by side.
[0015] In an optional embodiment, the shaftless propeller further includes an annular inner seat and a motor, the annular body is arranged inside the annular inner seat, the annular body is movably connected to the annular inner seat, the motor is arranged between the annular body and the annular inner seat, and the motor is used to drive the annular body to rotate along the annular inner seat.
[0016] The beneficial effects of the shaftless propeller provided by the embodiments of the present application include:
[0017] By arranging the annular body and the plurality of blades, the shafting structure of the traditional propeller is eliminated, mechanical energy loss and vibration noise are reduced, the shaftless design of the propeller effectively avoids accidents such as collision damage and entanglement with underwater structures, and the adaptability of the propeller to complex environments is improved. By designing the blades, the blades are formed into annular blades by the first blade body, the second blade body and the annular transition section, compared with the traditional blades, the design of the annular propeller makes the blades have no blade tips, thereby suppressing the generation of tip vortex, weakening the generation of outflow vortex, effectively avoiding noise and cavitation phenomenon, and optimizing the fluid dynamic performance, and further improving the propulsion efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0019] Figure 1 The first structure diagram of the shaftless propeller provided by the embodiments of the present application is shown in the figure.
[0020] Figure 2 The local schematic diagram of the blade provided by the embodiments of the present application is shown in the figure.
[0021] Figure 3 The second structure diagram of the shaftless propeller provided by the embodiment of the application.
[0022] Icon: 010-shaftless propeller; 100-ring body; 101-first side; 102-second side; 200-blade; 210-first blade body; 220-second blade body; 230-ring transition section; 240-protruding structure. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme of the embodiments of the application will be described clearly and completely below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments. The components of the embodiments of the application described and shown in the drawings can be arranged and designed in various different configurations.
[0024] In the description of the application, it should be noted that the positions or location relationships indicated by the terms "inner", "outer" and the like are based on the positions or location relationships shown in the drawings, or the positions or location relationships commonly placed when the products of the application are used, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second" and the like are only used for differentiation and description, and cannot be understood as indicating or implying relative importance.
[0025] In the description of the application, it should be noted that, unless otherwise explicitly specified and limited, the terms "set", "connected" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium; can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the application can be understood according to the specific circumstances.
[0026] The utility model provides a kind of shaftless propeller 010, it is applied to underwater propeller.
[0027] Please refer to Figure 1 And Figure 3The utility model provides a kind of shaftless propeller 010, including annular body 100 and multiple paddles 200, multiple paddles 200 are connected with the inner wall of annular body 100, multiple paddles 200 are arranged along the inner wall of annular body 100 with equal angle around the center of annular body 100;Paddle 200 includes first leaf body 210, second leaf body 220 and annular transition section 230, the first end of first leaf body 210 and the first end of second leaf body 220 are arranged with interval and are connected with the inner wall of annular body 100 respectively, the second end of first leaf body 210 and the second end of second leaf body 220 are connected with the two ends of annular transition section 230 respectively.
[0028] It can be understood that the motor of the underwater propeller generates a rotating magnetic field after being powered on, the magnetic field drives the annular body 100 to rotate, the annular body 100 drives the peripheral multiple paddles 200 to rotate synchronously, the rotating paddles 200 push the water flow (or air) to generate a reaction force, forming a thrust force, and the water flow flows through the flow channel inside the annular body 100, so that the flow is more uniform, reducing turbulence and energy loss.
[0029] By arranging the annular body 100 and the multiple paddles 200, the shafting structure of the traditional propeller is eliminated, the mechanical energy loss and vibration noise are reduced, and the shaftless design of the propeller effectively avoids the occurrence of accidents such as collision damage and entanglement of underwater structures, thereby improving the adaptability of the propeller to complex environments. By designing the paddles 200, the paddles 200 are formed into annular paddles 200 by the first leaf body 210, the second leaf body 220 and the annular transition section 230, compared with the traditional paddles 200, the design of the annular propeller eliminates the blade tip of the paddles 200, thereby suppressing the generation of tip vortex, weakening the generation of outflow vortex, effectively avoiding noise and cavitation phenomenon, and optimizing the fluid dynamic performance, further improving the propelling efficiency.
[0030] In the embodiment, the shaftless propeller 010 further includes an annular inner seat and a motor, the annular body 100 is arranged inside the annular inner seat, the annular body 100 is movably connected with the annular inner seat, and the motor is arranged between the annular body 100 and the annular inner seat, and the motor is used to drive the annular body 100 to rotate along the annular inner seat.
[0031] It can be understood that the motor of the underwater propeller generates a rotating magnetic field after being powered on, the magnetic field drives the annular body 100 to rotate relative to the annular inner seat, the annular body 100 drives the peripheral multiple paddles 200 to rotate synchronously, and the rotating paddles 200 push the water flow (or air) to generate a reaction force, forming a thrust force.
[0032] In the embodiment, please refer to Figure 1 and Figure 3The shaftless propeller 010 comprises a ring body 100 and a plurality of blades 200 connected to the inner wall of the ring body 100, and the plurality of blades 200 are arranged equiangularly around the center of the ring body 100 along the inner wall of the ring body 100.
[0033] Wherein, please refer to Figure 1 and Figure 3 , the front side of the ring body 100 is the first side 101, the back side of the ring body 100 is the second side 102, and the vertical direction of the first side 101 to the second side 102 of the ring body 100 is the first direction.
[0034] In this embodiment, the ring body 100 has a streamlined profile and is made of high-strength composite material, aiming to minimize resistance while maximizing thrust output. Its inner diameter is customized according to the propeller size, and its outer diameter takes into account the optimal water flow passage width to ensure efficient energy conversion.
[0035] Optionally, the ring body 100 can be provided with single-row blades 200 or double-row blades 200.
[0036] In one embodiment, the blades 200 include first blades 200 and second blades 200, the first blades 200 are arranged near the first side 101 of the ring body 100, and the second blades 200 are arranged near the second side 102 of the ring body 100. Wherein, the first blades 200 and the second blades 200 are arranged side by side.
[0037] In this embodiment, please refer to Figure 1 and Figure 2 , the blade 200 comprises a first blade body 210, a second blade body 220 and a ring transition section 230, the first end of the first blade body 210 and the first end of the second blade body 220 are arranged at intervals and are respectively connected to the inner wall of the ring body 100, and the second end of the first blade body 210 and the second end of the second blade body 220 are respectively connected to the two ends of the ring transition section 230.
[0038] Wherein, the first blade body 210 and the second blade body 220 are parallel and inclined relative to the first direction.
[0039] Wherein, the first blade body 210 and the second blade body 220 are designed as curved surfaces. It can be understood that the blade 200 is responsible for generating thrust, and the angle of each first blade and second blade is precisely calculated and designed as a curved surface, which can adapt to different working conditions.
[0040] In this embodiment, please refer to Figure 3 , the protruding structure 240 is provided on the blade 200, and the protruding structures 240 on the plurality of blades 200 are directed to the same side.
[0041] The protruding structure 240 is arranged along one side of the first blade 210 and one side of the second blade 220.
[0042] Optionally, referring to Figure 3 The protruding structure 240 at least includes a sawtooth structure and a wave structure.
[0043] It can be understood that the curvature of the leading edge of the protruding structure 240 imitates the fin limb of a beluga whale, which can optimize the control of the vortex; at the same time, the fluid is guided to flow along the surface of the blade through the protruding structure 240, which reduces the occurrence of separation and improves the working efficiency of the blade. The protruding structure 240 can reduce fluid separation, change the flow mode of the fluid on the blade surface, and delay the sending of stall. To adapt to different working conditions.
[0044] In the embodiment, the annular body 100 and the plurality of blades 200 are integrally formed. Of course, in other embodiments, the annular body 100 and the plurality of blades 200 are separately formed and welded; wherein the inner wall of the annular body 100 is provided with a plurality of grooves, the first blade 210 and the second blade 220 are arranged in the grooves in cooperation, and the first blade 210 and the second blade 220 are welded with the annular body 100.
[0045] In summary, the shaftless propeller 010 provided by the utility model eliminates the shaft structure of the traditional propeller, reduces mechanical energy loss and vibration noise, and at the same time, the shaftless design of the propeller effectively avoids the occurrence of accidents such as collision damage of the propeller and entanglement of underwater structures, and improves the adaptability of the propeller to complex environments. Through the design of the blade 200, the blade 200 is formed into an annular blade 200 by the first blade 210, the second blade 220 and the annular transition section 230, compared with the traditional blade 200, the design of the annular propeller makes the blade 200 not have a blade tip, thereby inhibiting the generation of tip vortex, weakening the generation of outflow vortex, effectively avoiding noise and cavitation phenomenon, and at the same time, the fluid dynamic performance can also be optimized, and the propelling efficiency is further improved.
[0046] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.
[0047] The above is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A shaftless propeller, characterized in that The impeller comprises a ring-shaped body and a plurality of blades, the plurality of blades are connected to the inner wall of the ring-shaped body, and the plurality of blades are arranged at equal angles around the center of the ring-shaped body along the inner wall of the ring-shaped body. The blade comprises a first blade body, a second blade body and a ring-shaped transition section, the first end of the first blade body and the first end of the second blade body are arranged at intervals and are respectively connected to the inner wall of the ring-shaped body, and the second end of the first blade body and the second end of the second blade body are respectively connected to the two ends of the ring-shaped transition section. The blade is provided with a protruding structure for guiding the flow of fluid along the surface of the blade, the protruding structures on the plurality of blades are directed to the same side, the protruding structure is arranged along the outer edge of one side of the first blade body and the outer edge of one side of the second blade body, and the protruding structure comprises at least one of a sawtooth structure and a wave structure.
2. The shaftless propeller of claim 1, wherein, The vertical direction from the first side to the second side of the ring-shaped body is a first direction, and the first blade body and the second blade body are parallel and arranged at an angle relative to the first direction.
3. The shaftless propeller of claim 1, wherein, The first blade body and the second blade body are designed as curved surfaces.
4. The shaftless propeller of claim 1, wherein, The ring-shaped body and the plurality of blades are integrally formed. Alternatively, the inner wall of the ring-shaped body is provided with a plurality of grooves, the first blade body and the second blade body are arranged in the grooves, and the first blade body and the second blade body are welded to the ring-shaped body.
5. The shaftless propeller of claim 1, wherein, The blade comprises a first blade and a second blade, the first blade is arranged close to the first side of the ring-shaped body, and the second blade is arranged close to the second side of the ring-shaped body.
6. The shaftless propeller of claim 5, wherein, The first blade and the second blade are arranged side by side.
7. The shaftless propeller of claim 1, wherein, The shaftless propeller further comprises a ring-shaped inner seat and a motor, the ring-shaped body is arranged inside the ring-shaped inner seat, the ring-shaped body is movably connected to the ring-shaped inner seat, the motor is arranged between the ring-shaped body and the ring-shaped inner seat, and the motor is used to drive the ring-shaped body to rotate along the ring-shaped inner seat.