KR20120135571A

KR20120135571A - Sub-marine propulsion device use inwheel motor

Info

Publication number: KR20120135571A
Application number: KR1020110054355A
Authority: KR
Inventors: 김병국
Original assignee: 김병국
Priority date: 2011-06-07
Filing date: 2011-06-07
Publication date: 2012-12-17

Abstract

PURPOSE: An underwater propulsion device for a motor boat is provided to minimize resistance applied to an existing frame and to reduce noise and vibration as the inside of an electric motor is formed into the shape of a hollow. CONSTITUTION: An underwater propulsion device for a motor boat has a hollow shape to minimize water resistance. The propulsion device uses an external rotor type motor. The external rotor type motor performs the high torque of low speed and uses a frame thereof as a propeller.

Description

SUB-MARINE PROPULSION DEVICE USE INWHEEL MOTOR}

The present invention relates to underwater propulsion devices for water surface and underwater motor boats. More specifically, the present invention is not a propulsion device in which a propeller is mounted on a shaft, which is a general propulsion device, but a propulsion device for a motor boat having a hollow shape inside and a propeller integrated frame having a motor structure for rotating the outer frame. It is about.

Marine ship propulsion device is generally equipped with a propeller at the end of the shaft by using an electric motor rotating the inner shaft to obtain a propulsion force while rotating. In the case of such a propulsion device, the resistance of water in proportion to the outer diameter of the motor acts in the forward direction. This resistance reduces the propulsion efficiency of the propulsion device. Therefore, in order to reduce this resistance, the cover of the motor is rounded or elliptical and manufactured in the direction of reducing the outer diameter of the motor as much as possible. However, if the outer diameter of the motor is reduced, the speed of the motor is increased to produce the same output, and the noise and vibration are increased due to the increase of this speed, and the safety is also caused by the high speed.

In addition, in the case of a general propulsion device, the rotor is surrounded by the stator and thus exists in a sealed form, thereby having a structural problem in which cooling of the rotor cannot be performed smoothly.

There is a need for a propulsion device having a structure that can increase propulsion efficiency by minimizing the resistance of water and a propulsion device having an electric motor shape that can realize low speed and high torque in order to reduce noise and vibration. In addition, there is a need for a propulsion device having a structure capable of smoothly cooling when the rotor generates heat.

In order to minimize water resistance, it has a structure of using an external electric motor that can realize a low speed and high torque in a hollow form and uses a frame as a propeller. In addition, since the inside has a hollow shape, the rotor and the stator can be smoothly cooled during heating.

Since the inside of the motor is hollow, the resistance acting on the existing frame is minimized, and the abduction type motor allows the frame to be used as a propeller and reduces the noise and vibration since it has a low speed, high torque motor. . In addition, the heat generated from the stator and the rotor can be cooled, thereby solving the problem of heat generation.

1 is a view showing a conventional underwater propulsion device.
2 is a view showing the internal structure of a conventional underwater propulsion device.
3 is a side view and a front view of the underwater propulsion device using the abduction type electric motor having a propeller integrated frame of the present invention.
4 is a view showing the structure of the propulsion device of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

In the case of a propulsion device using a general electric propulsion motor in FIG. 1, the propeller 1 is rotated to obtain a propulsion force. In detail, the propeller 1 and the electric-electric motor 2 are connected via the shaft 5. In FIG. 2, the structure of the electric-electric motor is divided into the electric motor stator 3 and the electric motor rotor 4, and the electric motor rotor 4 is enclosed by the stator 3. . Therefore, heat generated in the electric motor rotor 4 becomes difficult to discharge to the outside.

In the present invention, as shown in Figure 3 has an abduction-type electric motor of the inside is fixed and the outside rotates to produce a rotating frame of the propeller structure to produce an integral form.

In addition, since the inside is manufactured in a hollow form, not only can the water resistance be reduced, but the water flows freely out of the stator and the rotor in the water, and thus has a structure that can effectively cool the heat generated therein.

1: propeller
2: electric motor
3: stator of electric power type motor
4: Rotor of the electric motor
5: Shaft of Electric Prototype Motor
6: propeller integrated rotor of abduction electric motor
7: stator of abduction type motor
8: abduction motor rotor back yoke
9: permanent magnet
10: bearing
11: abduction type motor stator

Claims

Underwater propulsion device using a hollow outboard electric motor

The propulsion device of claim 1 having a propeller integrated frame.