KR20120034887A - Motor integrated impeller type propulsion device for water scooter driving under water - Google Patents

Abstract

PURPOSE: A propulsion device in which a driving part and a propulsion part are integrated is provided to minimize power loss by installing a motor and an impeller on a same axis and obtain high stability. CONSTITUTION: A propulsion device in which a driving part and a propulsion part are integrated includes a motor housing(100), an inlet housing(200), a partition wall(140), an impeller housing(300), a rotation shaft(130), and a regulator(330). The rotation shaft is penetrated through the partition wall and the inlet housing and extended to the impeller housing. A seal housing(150) having a seal is arranged to seal a hole on the partition wall where the rotation shaft penetrates. A bearing is interposed in the hole on the partition wall, the seal housing, and the regulator. The bearing reduces friction with the rotation shaft and prevents movement of the rotation shaft.

Description

Drive part propulsion unit integrated unit for underwater scooter {MOTOR INTEGRATED IMPELLER TYPE PROPULSION DEVICE FOR WATER SCOOTER DRIVING UNDER WATER}

The present invention relates to a propulsion unit integrated propulsion device for an underwater scooter, and more particularly, an underwater scooter improved to maximize the propulsion efficiency by reducing the rotational force loss by integrating the driving motor and the impeller of the power source. It relates to a driving unit propulsion unit integrated propulsion device.

In general, an underwater propulsion device is a device mainly used to make a ship, boat or submarine moveable in the water.

As such, the propulsion devices mounted on a ship or submarine and used in the water or underwater can be classified according to the propulsion type of the underwater propulsion device, the material of the hull and the purpose of use.

In general, various types are used in the classification according to the propulsion type of the underwater propulsion system, but underwater propulsion devices using propellers are generally used.

Underwater propulsion with propellers is applied to marine and submarine as well as marine scooters for divers.

That is, underwater propulsion using propellers is very widely used in the industrial, military and sports fields.

At this time, the propeller rotates at a predetermined speed by a driving force supplied from an engine or a driving source, and the rotating propeller moves the fluid, thereby propelling the hull underwater.

Another example is a waterjet propulsion method, which draws water through an inlet opening at the bottom of the ship and presses the incoming water with an impeller to turn into a swirl flow, rectifies the swirl flow into a straight stream through a diffuser, It is a method of obtaining propulsion by spraying in the form of a waterjet.

Underwater propulsion device having such a waterjet propulsion method is registered Patent No. 012390, Registered Patent No. 0847947, Registered Patent No. 0847946, Registered Patent No. 0611243, Registered Patent No. 0751846, Publication No. 2007-0073603, Registration Patent No. 0932190 or the like can be confirmed.

On the other hand, recently, due to the development of marine leisure culture, there is an active spread of underwater scooters that can freely move the surface and the water, these underwater scooters are usually equipped with a propeller type propulsion device.

This is because the waterjet propulsion method is difficult to apply in various aspects in terms of structure, volume, and cost to a small sports equipment such as an underwater scooter, since the structure is mainly applied to a hull requiring a complex, bulky, and high-speed propulsion.

For example, Figure 1 shows an underwater propulsion device with a propeller according to the prior art.

As shown, the propulsion shaft 91 is installed at the stern of the hull 90, the propeller 92 is mounted to the propulsion shaft 92, the propeller 92 is rotated by the rotational force transmitted from the power source, the hull ( 90).

The propeller type propulsion device having such a structure is mounted to be exposed to the stern of the underwater scooter 1 as shown in FIG. 2 to generate propulsion force in the underwater scooter 1.

By the way, in the case of such a conventional underwater scooter (1) is installed in a state in which the rotating propeller 92 is exposed, the seaweed or the like is easily caught by the propeller 92 is damaged, thereby causing the underwater scooter (1) upside down There was a problem that caused a large risk to safety, or fall into an inoperable state.

In addition, since the propeller 92 remains exposed, a problem has been raised that the diver may be injured when the operation is immature.

Accordingly, in order to solve such a problem, the applicant has applied for a patent application 2010-0052176 (integrated underwater propulsion device), which integrates a motor and improves safety and propulsion while maintaining an impeller shape. I've done it.

However, in the integrated propulsion device pre- filed by the present applicant, the motor and the impeller are connected to each other by a separate coupling to integrate, resulting in energy loss (power loss) in the coupling portion during power transmission, and coupling at high speed. The parts caused shaking (vibration), which resulted in problems such as reduced ride quality and shortened life.

In addition, since the motor as the driving source uses an Out Rotor Type BLDC (brushless DC motor), the cost is high, the voltage is not easy to convert, and there is a risk of arc discharge.

The present invention has been made to further improve the inconveniences of the prior art as described above to provide a safer and more propelling device for underwater scooter with excellent propulsion efficiency, the impeller for generating a waterjet directly connected to the motor without coupling All-in-one propulsion unit for propulsion unit for underwater scooter, which provides stable propulsion and high propulsion efficiency by preventing power loss and fluctuation during high-speed rotation while improving motor efficiency, securing ease of control, and building a safer working environment. The main purpose is to provide.

According to an aspect of the present invention, there is provided a motor housing having a built-in motor, a suction port housing connected to the motor housing and having a plurality of suction ports formed in a radial direction, and a boundary between the motor housing and the suction port housing. An impeller housing forming a nozzle, the impeller housing being connected to the inlet housing and having an impeller and having an end portion narrowed, a rotating shaft that receives power from the motor and is rotated and the impeller is fixed to the impeller housing; In the propulsion apparatus for underwater scooter comprising a regulator that is built-in and discharges the water in the water sucked through the impeller in a straight line shape; The rotary shaft is integrally formed to extend through the partition wall and the inlet housing to the impeller housing; A seal housing provided with a seal to seal the hole of the partition wall through which the rotary shaft is penetrated; The hole of the partition, the seal housing, the regulator provides a driving unit propulsion unit integrated propulsion unit for reducing the friction with the rotary shaft, the bearing to suppress the flow of the rotary shaft is interposed.

In this case, the motor is a PMAC AC motor, it is characterized in that the stator is fixed to the inside of the motor housing by the stator bracket, the stator is installed facing the stator and the rotating shaft is integrally fixed.

In addition, the seal housing is characterized in that the leak detection sensor for detecting whether more leakage is installed.

According to the present invention, since the motor and the impeller are coaxially installed, the power loss is minimized, and there is no seam on the rotating shaft to eliminate fluctuations (vibration), and it is easy to miniaturize and easy to convert voltage. There is no discharge, and the effect of securing high safety can be obtained.

1 is an exemplary view partially showing a conventional general propeller type propulsion device.
Figure 2 is an illustration of an underwater scooter equipped with a conventional propeller type propulsion device.
3 is an exemplary view of a driving unit propulsion unit integrated underwater propulsion device according to the present invention.
4 is a schematic side cross-sectional view of FIG. 3.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

As shown in Figure 3 and 4, the propulsion unit integrated propulsion unit for underwater scooter drive unit according to the present invention includes a motor housing 100, the inlet housing 200 and the impeller housing (300).

In this case, the motor housing 100, the inlet housing 200, the impeller housing 300 may be manufactured separately and then assembled together to form a single body, three housings may be made of one body three When the housing is composed of one body, it may be configured to be divided up and down and assembled with each other.

In addition, a motor (Motor) is built in the motor housing 100, and the inlet housing 200 has a plurality of suction ports 210 forming a passage of water so as to suck water in the water at a predetermined interval in a radial direction. Is formed, the impeller housing 300 has an impeller 310 is built-in and the end of the impeller housing 300 is extended so that the nozzle 320 to discharge (spray) the water sucked into the inlet 210 Is formed.

In addition, these housings may be fixed to the stern of the underwater scooter through the fixing brackets (B1, B2) illustrated in Figure 3 in an integrated state.

In addition, the motor housing 100 has a structure in which the motor is tightly sealed so that the motor does not come into contact with an external fluid.

Here, the motor is an alternating current motor as a PMAC (Permanment Magnet Alternative Current) motor, and the stator 110 and the rotor 120 are provided in the shape of a millstone facing each other.

In particular, by applying an AC motor instead of a DC motor, voltage conversion is easy, and arc generation can be eliminated to maximize safety.

In addition, the stator 110 is firmly fixed to the inside of the motor housing 100 by the stator bracket 112, and the rotor 120 is fixed to the rotating shaft 130 facing the stator 110 Is rotatably installed.

In addition, the boundary between the motor housing 100 and the inlet housing 200 is separated and partitioned by the partition wall 140.

In this case, a hole (not shown) is formed at the center of the partition wall 140, and the rotation shaft 130 penetrates through the hole, and the hole including the rotation shaft 130 has a seal. It is sealed by the seal housing 150.

In other words, the rotary shaft 130 extends through the partition 140 and the seal housing 150 to the impeller housing 300, and the partition shaft 140 and the seal housing 150 are rotated at the rotation shaft 130. A bearing (not shown) is provided to smoothly support the rotation.

In addition, the seal housing 150 is located inside the inlet housing 200, although not shown, a leak detection sensor is installed in a part of the seal housing 150 to see whether water in the water flows into the motor housing 100. It is possible to ensure the safety by enabling the detection of.

In this case, it is preferable that the leak detection by the sensor can be maintained up to about 50m underwater.

In addition, the impeller 310 is mounted on the rotating shaft 130 extending to the impeller housing 300.

As the impeller 310 is a propulsion means, the underwater scooter is propelled by forming a water jet that strongly discharges (sprays) water introduced through the suction port 210 to the outside of the hull through the nozzle 320.

In addition, a regulator 330 is further provided inside the impeller housing 300 to convert rotational energy of the fluid introduced through the impeller 310 into linear energy.

In this case, the regulator 330 also performs a function of maintaining a constant pressure of the fluid introduced in addition to the conversion function, in this case, the rotation shaft 130 to minimize the flow (vibration, shaking) of the rotation shaft 130 And a housing (not shown) is provided between the regulator 330.

Finally, the nozzle 320 is preferably zoomed by reducing the discharge port discharged from the regulator 330 so that the discharge pressure can be converted to a large speed energy.

The propulsion device for an underwater scooter according to the present invention having such a configuration may be mounted on the stern of the underwater scooter.

Of course, the present invention has been described as being applied to the propulsion apparatus limited to the underwater scooter, but in some cases, it is possible to extend the application to the mechanisms that require propulsion in the water, such as small ships, boats.

In the propulsion process, when the rotor 120 rotates, the impeller 310 installed in the rotation shaft 130 rotates while the rotation shaft 130 integrally connected thereto rotates.

Then, air or water around the impeller 310 is injected through the nozzle 320, and at the same time, the pressure inside the inlet housing 200 located at the tip side of the impeller 310 is lowered.

Accordingly, the water in the water is introduced into the inlet housing 200 through the inlet 210, the water is injected again through the nozzle 320 through the impeller 310 and the regulator 330, the driving force to the hull Will be provided.

By repeating this process, the hull can travel freely on the surface of the water or underwater.

At this time, in the present invention, since the rotation shaft 130 is composed of one shaft, the power loss is minimized in transferring the power generated from the motor to the impeller 310.

In addition, the shaking (flow, vibration) of the rotary shaft 130 is also minimized. Particularly, the part where the rotary shaft 130 penetrates or is installed has a bearing housing (not shown) to further minimize the shaking phenomenon. You can do it.

100: motor housing 110: stator
120: rotor 130: rotating shaft
140: bulkhead 150: seal housing
200: suction port housing 210: suction port
300: impeller housing 310: impeller
320 nozzle 330 regulator

Claims (3)

A motor housing 100 having a motor built therein, an inlet housing 200 connected to the motor housing 100 and having a plurality of suction ports 210 formed in a radial direction, the motor housing 100 and the inlet housing 200. The impeller housing 300 which forms a boundary between the partition wall 140 and the inlet housing 200, includes an impeller 310, and has an end portion narrowed to form the nozzle 320, and the motor. Rotating by receiving power from the impeller 310 is fixed to the rotating shaft 130 and the impeller housing 300 is built in a straight form while adjusting the pressure of the water sucked through the impeller 310 In the propulsion device for underwater scooter comprising a regulator 330 for discharging;
The rotary shaft 130 is integrally formed to extend through the partition wall 140 and the inlet housing 200 to the impeller housing 310;
A seal housing 150 having a seal to seal the hole of the partition wall 140 through which the rotary shaft 130 is penetrated;
The hole of the partition wall 140, the seal housing 150, the regulator 330 is characterized in that the bearing to reduce the friction with the rotary shaft 130, to suppress the flow of the rotary shaft 130 is interposed Propulsion unit integrated driving unit propulsion unit for underwater scooter.
The method according to claim 1;
The motor is a PMAC AC motor, the stator 110 is fixed to the inside of the motor housing 100 by the stator bracket 112, is installed facing the stator 110 and the rotary shaft 130 is fixed integrally Driving unit propulsion unit integrated propulsion device for underwater scooters, characterized in that consisting of a rotor (120).
The method according to claim 1;
The seal housing 150 is a propulsion unit integrated propulsion unit for underwater scooter, characterized in that the leakage detection sensor for detecting more leakage is installed.

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