Propeller hub cap with fins

A propeller hub and propeller technology, applied to rotating propellers, rotary propellers, ship propulsion, etc., can solve the problems of reducing pressure difference, hindering propulsion efficiency, and not greatly reducing hub vortex cavitation, so as to improve propulsion efficiency effect

Active Publication Date: 2018-02-06
HYUNDAI HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the front and rear surfaces of the fin 31, namely the pressure side 31a and the suction side 31b, allow the fluid to flow in the transverse direction, which reduces the pressure difference between the two surfaces of the fin 31 and thus hinders the improvement of the propulsion efficiency. improve
In addition, the concentration of hub vortex cavitation is not effectively dispersed, therefore, the hub vortex cavitation is not greatly reduced

Method used

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  • Propeller hub cap with fins
  • Propeller hub cap with fins
  • Propeller hub cap with fins

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Embodiment Construction

[0044] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0045] Figure 5 is a perspective view showing a hub cap according to the present invention. Such as Figure 5 As shown, a hub cap 100 according to the present invention includes a plurality of fins 110 formed along a perimeter, and an end plate 111 formed at the end of each fin 110 .

[0046] Figure 6 for showing Figure 5 A side view of the hub cap 100 of , and depicts the arrangement of the fins 110 formed along the periphery of the hub cap 100 . The fins 110 are disposed along the circumference of the hub cap 100 in a helical form.

[0047] Figure 7 A side view of the fin 110 of the hub cap 100 according to the present invention is shown. The end plate 111 is formed on the end of the fin 110, and the end plate 111 plays a role of preventing fluid flow, which is between the front (propeller side) surface and the rear (rudder side) surf...

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Abstract

The invention provides a propeller hub cap with fins.The propeller hub cap is provided with the multiple fins to improve the propelling efficiency and reduce the hub vortex cavitation.The propeller hub cap comprises the multiple fins arranged on the periphery of the hub cap of a propeller propelling a ship, and an end plate is formed at the end of each fin.

Description

[0001] This application is a divisional application of the invention patent application 201280036176.1 (International application number: PCT / KR2012 / 007347) filed on January 21, 2014, entitled "Propeller hub cap with fins". technical field [0002] The present invention relates to a propeller hub cap, and more particularly, to a hub cap having a plurality of fins in a circumferential direction to improve propulsion efficiency and reduce hub vortex cavitation. Background technique [0003] Typically, ships are driven by propellers. If the propeller attached to the lower part of the stern rotates, propulsion is generated so that the ship can move with this propulsion. [0004] However, when such a propeller rotates, a strong hub vortex cavitation is generated behind the hub of the propeller. The concentration of hub vortex cavitation reduces the efficiency of the ship's propeller and causes vibration and noise at the propeller. In addition, the concentration of hub vortex ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63H1/28B63H1/18
CPCB63H1/18B63H1/28B63H2001/283
Inventor 张俸准
Owner HYUNDAI HEAVY IND CO LTD
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