Underwater hollow hub-free propeller

A thruster, hollow technology, applied in the directions of rotary thrusters, rotating propellers, controlling mechanical energy, etc., to achieve the effect of improving efficiency, increasing the number of poles, and being easy to install

Inactive Publication Date: 2009-09-30
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it still has a hub in the center, so it doesn't solve the problem of preventing winding

Method used

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  • Underwater hollow hub-free propeller
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  • Underwater hollow hub-free propeller

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Embodiment Construction

[0016] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0017] to combine Figure 1 to Figure 3 , The composition of the underwater hollow hollow propeller includes a motor electronic housing 1, an end cover 2, a ceramic angular contact bearing 3, a rotor 4, a propeller blade 5, a cured outer skin 6, and a stator coil 7.

[0018] The motor housing 1, the stator coil 7 is wound on the silicon steel sheet of the stator motor stator housing 1, and then put it into the center of the motor housing 1, the rotor 4 is designed as a hollow ring structure, and the rotor permanent magnets are fixed on the rotor 4 in poles, forming Rotor with a hollow structure, the propeller blade 5 is fixed inside the hollow rotor 4, so that the propeller blade 5 and the rotor 4 are combined into a whole, and the rotor 4 is fixed in the motor by two ceramic angular contact bearings 3, which can be installed in the motor according to the applicat...

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Abstract

The invention provides an underwater hollow hub-free propeller, which comprises a motor shell, a stator coil, a stator silicon-steel sheet, a rotor permanent magnet, a rotor, a screw propeller and a ceramic bearing. The stator coil is wound on the stator silicon-steel sheet, the stator coil wound on the stator silicon-steel sheet is arranged at the center of the motor shell, the rotor has a hollow annular structure, split poles of the rotor permanent magnet are fixed on the rotor to form a hollow structural rotor, the screw propeller is fixed inside the hollow rotor, and the screw propeller, the rotor and the rotor permanent magnet form a whole; and the rotor is fixed in the motor shell through the ceramic bearing. When blades rotate, induced resistance and cavity bubble phenomenon are not generated so as to greatly improve the efficiency of the screw propeller. Moreover, because the diameter of a motor is enlarged, the pole number of the motor is increased and the torque of the motor is improved, the underwater hollow hub-free propeller is particularly suitable for working in an environment with large water depth and large density; and because the motor and the screw propeller of the underwater propeller have an integral hollow structure, the underwater hollow hub-free propeller can be easily arranged on a ship hull.

Description

(1) Technical field [0001] The invention relates to a ship propulsion device, in particular to an underwater propulsion device. (2) Background technology [0002] With the advancement of my country's ocean development technology and the development of the ship industry, my country's requirements for underwater propellers have also been greatly improved. The traditional underwater propeller is a propeller with a hub installed on the motor shaft. When the motor drives the propeller to rotate The water flows in from the front of the motor, and the motor produces head-on resistance to the blades. When the propeller tip rotates, induced resistance and cavitation occur, which reduces the efficiency of the propeller. In addition, due to the long output shaft of the traditional underwater motor, the propeller also rotates. Radial vibrations will be generated, which will also reduce the efficiency of the entire propeller. [0003] The patent application number is "A Ship Propeller" in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/10B63H1/14
Inventor 刘文智李海波秦再白庞永杰叶秀芬王天王雷
Owner HARBIN ENG UNIV
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