CN114802677A - Marine shaftless electric propeller - Google Patents

Marine shaftless electric propeller Download PDF

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Publication number
CN114802677A
CN114802677A CN202210500453.5A CN202210500453A CN114802677A CN 114802677 A CN114802677 A CN 114802677A CN 202210500453 A CN202210500453 A CN 202210500453A CN 114802677 A CN114802677 A CN 114802677A
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CN
China
Prior art keywords
rotor
blades
paddle
blade
stator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202210500453.5A
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Chinese (zh)
Inventor
陈章德
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202210500453.5A priority Critical patent/CN114802677A/en
Publication of CN114802677A publication Critical patent/CN114802677A/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/10—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof
    • B63H11/103—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof having means to increase efficiency of propulsive fluid, e.g. discharge pipe provided with means to improve the fluid flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/26—Rotor cores with slots for windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Hydraulic Turbines (AREA)

Abstract

The utility model provides a marine shaftless electric propulsor, includes the stator, the stator is the tubulose, is equipped with tubulose rotor in, its characterized in that: a supporting bearing is arranged between the stator and the rotor, so that the rotor can smoothly rotate in the stator; the stator is provided with a stator winding, and the rotor is provided with a rotor winding to form a shaftless motor; the inner wall of the rotor is provided with a paddle, and the paddle realizes drainage movement along with the rotation of the rotor. The paddles are arranged in the form of a spiral line, so that the blades can finish uninterrupted uniform drainage movement in a relay manner, and compared with the paddles arranged on the same plane, the blade drainage is increased, and the driving force of the propeller is improved. Through the arrangement of the inner cylinder, the advancing blades, the retreating blades and the matched advancing blade grooves and retreating blade grooves, the power output and stop of the propeller and the change of the power direction are realized.

Description

Marine shaftless electric propeller
Technical Field
The invention belongs to the technical field of marine propellers, and particularly relates to a marine shaftless electric propeller.
Background
The existing marine propeller is subjected to the resistance of a middle shaft in water, so that the wave-making resistance, the friction between dynamic water and static water and the noise caused by the wave-making resistance can be met when a ship sails, and a shaftless propeller is needed to reduce the wave-making resistance in the process of propelling the shafted screw and form suction and spraying resultant force to push the ship to sail in water. The existing paddles are evenly distributed on a plane around the central axis to rotate, and only water is drained on the same plane in the rotating and draining process, so that the viscous resistance in water is overcome, relay drainage cannot be formed, the drainage capacity is increased, and the power efficiency of the propeller is improved.
Disclosure of Invention
The invention aims to provide a shaftless electric propeller for a ship, which changes the middle shaft resistance of the existing ship propeller in water, reduces wave-making resistance and friction between dynamic water and static water which can be met by the ship in navigation, and reduces noise caused by the wave-making resistance. The paddles are arranged in the form of a spiral line, so that the blades can finish uninterrupted uniform drainage movement in a relay manner, and compared with the paddles arranged on the same plane, the blade drainage is increased, and the driving force of the propeller is improved. Through the arrangement of the inner cylinder, the advancing blades, the retreating blades and the matched advancing blade grooves and retreating blade grooves, the power output and stop of the propeller and the change of the power direction are realized.
In order to solve the technical problems, the specific technical scheme of the shaftless electric propeller for the ship is as follows:
the invention relates to a shaftless electric propeller for a ship, which comprises a stator, wherein the stator is tubular and is internally provided with a tubular rotor; a supporting bearing is arranged between the stator and the rotor, so that the rotor can smoothly rotate in the stator; the stator is provided with a stator winding, and the rotor is provided with a rotor winding to form a shaftless motor; the inner wall of the rotor is provided with a paddle, and the paddle realizes drainage movement along with the rotation of the rotor.
Furthermore, the paddle is arranged on the inner wall of the rotor according to an oblique 30-degree angle, so that the effective area of the paddle is increased during rotation, and the water discharge is increased.
Furthermore, the inner wall of the rotor is provided with a spiral line which is distributed on the inner wall of the rotor at equal intervals, and the blades are all arranged on the spiral line, so that the blades rotate along the track of the spiral line;
furthermore, the paddle is 3 at least, in proper order evenly distributed on the helix of different planes, through the transmission of rotatory rivers, increase displacement, reinforcing power efficiency.
Furthermore, a concentric inner cylinder matched with the rotor is arranged in the rotor, and a gap is formed between the rotor and the inner cylinder; the inner barrel is provided with a blade groove which is spirally distributed on the inner barrel wall in a matching way with the blades, so that the blades arranged on the rotor can shuttle in the blade groove along with the rotation of the rotor, and the automatic extension of the blades is realized.
Furthermore, the spiral line is divided into a forward spiral line and a backward spiral line which are alternately distributed on the inner wall of the rotor at equal intervals; the blades are divided into advancing blades and retreating blades corresponding to the spiral lines, and are evenly and alternately distributed on the corresponding advancing spiral lines and retreating spiral lines on different planes, so that advancing and retreating power of the propeller is realized.
Furthermore, the number of the blade grooves is matched with that of the advancing blades and the retreating blades, and the blade grooves are divided into advancing blade grooves and retreating blade grooves; the forward blade groove and the backward blade groove are spirally arranged, so that the forward blade groove and the backward blade groove are changed relative to the rotor along with the rotation of the rotor, the extension and the shortening of the blades in the inner cylinder are controlled, and the blades can controllably rotate for drainage movement.
Furthermore, the inclination angles of the advancing paddle and the retreating paddle are symmetrical, so that the paddles can smoothly extend into the inner cylinder through the blade grooves.
Furthermore, the blades are arranged in a shark fin shape, the effective area of the advancing blades is gradually increased along with the increase of the rotating speed of the rotor, and the water discharge is increased, so that the power strength and the moving speed are increased.
Furthermore, a concentric inner pipe with the rotor is further arranged between the rotor and the inner barrel, the inner pipe is fixed on the inner wall of the rotor, a spiral line is arranged on the inner wall of the inner pipe, and blades are uniformly arranged on the spiral line, so that the blades can be conveniently replaced and installed.
The shaftless electric propeller for the ship has the following advantages: the blades are arranged in the rotor of the shaftless motor to rotate and drain water, so that suction and spray resultant force is formed, the power output of the propeller is completed, and the speed of the ship in the water is promoted. The paddles are arranged in the form of a spiral line, so that the blades can finish uninterrupted uniform drainage movement in a relay manner, and compared with the paddles arranged in the same plane, the propeller has the advantages that the blade drainage is increased, and the power efficiency of the propeller is improved. By arranging the inner cylinder, the advancing blade, the retreating blade and the matched advancing blade groove and retreating blade groove, the power output and stop of the propeller and the change of the power direction are realized.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention with both forward and reverse blades deployed;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of the pusher of the present invention in its forward configuration;
FIG. 4 is a schematic cross-sectional view of FIG. 3;
FIG. 5 is a schematic view of the rear propeller of the present invention in a retracted configuration;
FIG. 6 is a cross-sectional view of FIG. 5;
FIG. 7 is a schematic view of the rear propeller of the present invention in a stopped configuration;
FIG. 8 is a schematic cross-sectional view of FIG. 7;
fig. 9 is a perspective view of blades of the present invention distributed on a spiral line of the inner wall of a rotor (or inner wall of an inner tube).
The notation in the figure is: 1. a stator; 11. a stator winding; 2. a rotor; 21. a rotor winding; 22 the inner wall of the rotor; 3. a support bearing; 4. a paddle; 41. advancing the paddle; 42. retreating the blade; 5. an inner barrel; 6. a helical line; 61. a forward helix; 62. a receding spiral line; 7. a leaf groove; 8. an inner tube; 81. the inner wall of the inner pipe.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, the marine shaftless electric propeller will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-9, the shaftless electric propeller for a ship of the present invention comprises a stator, wherein the stator is tubular and is internally provided with a tubular rotor; a supporting bearing is arranged between the stator and the rotor, so that the rotor can smoothly rotate in the stator; the stator is provided with a stator winding, the rotor is provided with a rotor winding to form a shaftless motor, so that the rotating power is provided, and the middle shaft resistance of the marine propeller in water is reduced; the inner wall of the rotor is provided with a paddle, and the paddle realizes drainage movement along with the rotation of the rotor.
As shown in fig. 1-9, further, the blades are arranged on the inner wall of the rotor at an oblique angle of 30 degrees, and the blades can be gradually extended by the centrifugal force and the resistance of water flow caused by the rotation of the shaftless motor, so that the effective area of the blades is increased, the water displacement is increased, the driving force is improved, and the sailing speed is increased.
As shown in fig. 1-9, further, the inner wall of the rotor is provided with a spiral line, which is distributed on the inner wall of the rotor at equal intervals, like the rifling in the gun barrel, and the blades are all arranged on the spiral line, so that the blades rotate along the track of the spiral line; the paddle is 3 at least, in proper order evenly distributed in on the helix of different planes, different planes refer to different and rotor inner wall vertically planes, make the paddle that sets up on the helix arrange like the carpenter bores spiral, the rotor rotates and drives the paddle rotation, water just can be promoted backward by the paddle and flow away, and the paddle on the next helix is given in the retransmission again, accomplishes incessant even drainage motion to can form the power effect that pushes away after the front suction in the tubular structure, just as the carpenter's drill bit gives out the saw-dust and the drill bit discharges water to the principle that gos forward, promote loaded equipment and move in aqueous. Different from the blades distributed on the same plane, the blades distributed on the same plane only do work once, and the water flow after pushing out the water is sprayed out due to the consistent flow direction. The blades distributed spirally are not in the same plane and form a front-back spiral arrangement, so that the amount of water drained by the previous blade is increased by the next blade to increase the same thrust, the water drainage is increased through the transmission of rotating water flow, the transmission energy is three times of the water drainage of the blades in the same plane, and the power is increased.
As shown in fig. 1-9, further, a concentric inner cylinder matched with the rotor is arranged in the rotor, and the cylinder diameter of the inner cylinder is smaller than the inner diameter of the rotor, so that a gap is formed between the inner cylinder and the rotor; the inner cylinder is provided with blade grooves which are spirally distributed on the inner cylinder wall in a matching way with the blades, so that the blades arranged on the rotor can shuttle in the blade grooves along with the rotation of the rotor to finish the extension and retraction in the inner cylinder. When the rotor rotates clockwise, the paddle extends into the inner cylinder through the blade groove, and when the rotor rotates anticlockwise, the paddle is mostly contracted into a gap between the inner cylinder and the rotor through the blade groove, so that the automatic extension of the paddle is realized.
As shown in fig. 1-9, further, the spiral line is divided into a forward spiral line and a backward spiral line which are alternately distributed at equal intervals on the inner wall of the rotor; the blades are divided into advancing blades and retreating blades corresponding to the spiral lines, and are evenly and alternately distributed on the corresponding advancing spiral lines and retreating spiral lines on different planes, so that advancing and retreating power of the propeller is realized. The spiral in the example is a set of 6 spirals, where: 3 forward spiral lines and 3 backward spiral lines; the blades are arranged in groups of 6 blades corresponding to the spiral line, wherein: 3 advancing paddles and 3 retreating paddles.
As shown in fig. 1 to 9, further, the number of the blade grooves is matched with that of the advancing blade and the retreating blade, and the blade grooves are divided into an advancing blade groove and a retreating blade groove; the forward blade groove and the backward blade groove are spirally arranged, so that the forward blade groove and the backward blade groove change relative to the rotor along with the rotation of the rotor, the forward blades and the backward blades are controlled to extend and contract in the inner cylinder, the blades can controllably perform rotary drainage movement, and the output and stop of the power of the propeller and the change of the power direction are realized.
As shown in fig. 1 to 9, further, the inclination angles of the advancing blade and the retreating blade are symmetrical, so that the blades can smoothly extend and retract into the inner cylinder through the blade grooves. In the embodiment, a tangent vertical line of the midpoint of the pipe wall between the advancing blade and the retreating blade is taken as a symmetry axis, and the advancing blade and the retreating blade are oppositely and symmetrically arranged in an inclined manner.
As shown in fig. 1-9, further, the blades are arranged in a shark fin shape, and as the rotating speed of the rotor is increased, the effective area of the advancing blades is gradually increased, so that the water discharge amount is increased, and the power intensity and the moving speed are increased.
As shown in fig. 1-9, a concentric inner tube is further disposed between the rotor and the inner tube, the inner tube is fixed on the inner wall of the rotor, a spiral line is disposed on the inner wall of the inner tube, and blades are uniformly disposed on the spiral line, so that the blades can be conveniently replaced and installed.
The invention sets blades in the rotor of the shaftless motor to rotate and drain water to form suction and spray resultant force to complete the output of the power of the propeller so as to push the ship to sail in water. The paddles are arranged in the form of a spiral line, so that the blades can finish uninterrupted uniform drainage movement in a relay manner, and compared with the paddles arranged on the same plane, the blade drainage is increased, and the driving force of the propeller is improved. Through the arrangement of the inner cylinder, the advancing blades, the retreating blades and the matched advancing blade grooves and retreating blade grooves, the power output and stop of the propeller and the change of the power direction are realized.
The working principle of the propeller of the invention is as follows:
when the rotor rotates clockwise, the forward blade is driven to extend out of the forward blade groove, the length of the forward blade exposed in the inner cylinder is increased, the forward blade groove of the inner cylinder rotates towards the root of the forward blade, the backward blade groove is away from the root of the backward blade, so that the backward blade is mostly retracted into a gap between the inner cylinder and the rotor through the backward blade groove, the length of the backward blade exposed in the inner cylinder is shortened, the backward blade is attached to the inner wall of the inner cylinder, and the backward blade does not have a drainage function at the moment; the extended advancing paddle drives the inner cylinder to rotate clockwise along with the rotor until the advancing paddle is completely extended out, and the inner cylinder performs rotary drainage motion to enable the propeller to advance and output advancing power;
when the rotor rotates anticlockwise, the retreating blades are driven to extend out of the retreating blade grooves, and the length of the retreating blades exposed in the inner cylinder is increased; the retreating blade groove of the inner cylinder rotates along with the roots of the retreating blades, the advancing blade groove is away from the root position of the advancing blades, so that the advancing blades are mostly retracted into a gap between the inner cylinder and the rotor through the advancing blade groove, the length of the advancing blades exposed in the inner cylinder is shortened, the advancing blades are attached to the inner wall of the inner cylinder, and the advancing blades do not have a drainage function at the moment; the extended retreating paddle drives the inner cylinder to rotate anticlockwise along with the rotor until the retreating paddle is fully extended out, and the rotary drainage movement is carried out to retreat the propeller and output retreating power;
when the rotor stops rotating, the forward blade groove and the backward blade groove of the inner cylinder rotate to the middle of the forward blade and the backward blade, so that the forward blade and the backward blade are only exposed to a small part of the forward blade groove and the backward blade groove and attached to the inner wall of the inner cylinder, and at the moment, the forward blade and the backward blade do not have a drainage function, so that the propeller stops moving and stops power output.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. Marine shaftless electric propulsor, including stator (1), stator (1) is the tubulose, is equipped with tubulose rotor (2), its characterized in that in being equipped with: a supporting bearing (3) is arranged between the stator (1) and the rotor (2) so that the rotor (1) can smoothly rotate in the stator (1); a stator winding (11) is arranged on the stator (1), and a rotor winding (21) is arranged on the rotor to form a shaftless motor; the inner wall (22) of the rotor (1) is provided with a paddle (4), and the paddle (4) rotates along with the rotor (2) to realize drainage movement.
2. The shaftless electric marine propulsor of claim 1, wherein: the paddle (4) is arranged on the inner wall (22) of the rotor according to an oblique 30-degree angle, the effective area of the paddle (4) is increased during rotation, and the water discharge is increased.
3. The shaftless electric marine propulsor of claim 1, wherein: rotor inner wall (22) are equipped with helix (6), and the equidistance distributes on rotor inner wall (22), and paddle (4) all set up on helix (6), make paddle (4) rotatory along the orbit of helix (6).
4. Marine shaftless electric thruster of claim 3, wherein: the blades (4) are at least 3, are sequentially and evenly distributed on the spiral lines (6) on different planes, and increase the water discharge and enhance the power efficiency through the transmission of rotating water flow.
5. Marine shaftless electric thruster of claim 1, characterized in that: an inner concentric cylinder (5) matched with the rotor (2) is arranged in the rotor (2), and a gap is formed between the rotor (2) and the inner concentric cylinder; the inner cylinder is provided with a blade groove (7) which is spirally distributed on the inner cylinder wall in a matching way with the blades (4), so that the blades (4) arranged on the inner wall (21) of the rotor can shuttle in the blade groove (7) along with the rotation of the rotor (2), and the blades (4) can automatically stretch out and draw back.
6. Marine shaftless electric thruster of claim 3, wherein: the spiral lines are divided into a forward spiral line (61) and a backward spiral line (62) which are alternately distributed on the inner wall (22) of the rotor at equal intervals; the blades (4) are divided into advancing blades (41) and retreating blades (42) corresponding to the spiral lines (6), and are evenly and alternately distributed on corresponding advancing spiral lines (61) and retreating spiral lines (62) on different planes to generate advancing and retreating power of the propeller.
7. Marine shaftless electric thruster of claim 5, characterized in that: the number of the blade grooves (7) is matched with that of the advancing blades (41) and the retreating blades (42), and the blade grooves are divided into advancing blade grooves (71) and retreating blade grooves (72); the forward blade groove (71) and the backward blade groove (72) are arranged in a spiral manner, so that the forward blade groove (71) and the backward blade groove (72) change relative to the rotor along with the rotation of the rotor, the extension and the shortening of the blades (4) in the inner cylinder (5) are controlled, and the blades (4) can controllably perform rotary drainage movement.
8. Marine shaftless electric thruster of claim 6, characterized in that: the inclination angles of the advancing blade (41) and the retreating blade (42) are symmetrical, so that the blades can smoothly extend into the inner cylinder through the blade grooves (7).
9. The shaftless electric marine propulsor of claim 1, wherein: the paddle (4) is arranged in a shark fin shape, the effective area of the advancing paddle (41) is gradually increased along with the increase of the rotating speed of the rotor (2), and the water discharge is increased, so that the power strength and the moving speed are increased.
10. Marine shaftless electric thruster of claim 5, wherein: still be equipped with between rotor (2) and inner tube (5) with concentric inner tube (8) of rotor, inner tube (8) are fixed on the rotor inner wall (42), are equipped with helix (6) on inner tube inner wall (81), evenly set up paddle (4) on helix (6), the change and the installation of paddle (4) of being convenient for.
CN202210500453.5A 2022-05-10 2022-05-10 Marine shaftless electric propeller Withdrawn CN114802677A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210500453.5A CN114802677A (en) 2022-05-10 2022-05-10 Marine shaftless electric propeller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210500453.5A CN114802677A (en) 2022-05-10 2022-05-10 Marine shaftless electric propeller

Publications (1)

Publication Number Publication Date
CN114802677A true CN114802677A (en) 2022-07-29

Family

ID=82514040

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210500453.5A Withdrawn CN114802677A (en) 2022-05-10 2022-05-10 Marine shaftless electric propeller

Country Status (1)

Country Link
CN (1) CN114802677A (en)

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Application publication date: 20220729