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Propeller hub cap with fins

A technology of propeller hub and hub cap, applied in the direction of rotating propeller, rotary propeller, ship propulsion, etc., can solve the problems of reducing the pressure difference, not greatly reducing the cavitation of the hub vortex, hindering the propulsion efficiency, etc. The effect of boosting efficiency

Active Publication Date: 2016-10-26
HYUNDAI HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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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

[0043] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0044] 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 .

[0045] 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.

[0046] 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 functions to prevent fluid flow, which is between the front (propeller side) surface and the rear (rudder side) surface of...

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Abstract

Disclosed is a propeller boss cap comprising fins, in which a plurality of fins are arranged in the boss cap to improve propulsion efficiency and reduce hub vortex cavitation. The propeller boss cap of the present invention is configured such that the plurality of fins are arranged along the circumferential surface of the boss cap of the propeller for propelling ships, one end of each fin having an end plate.

Description

technical field [0001] 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 [0002] 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. [0003] 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 cavitation may cause cavitation at the rudder. [0004] In the prior art, in order to prevent the concentration of hub vortex cavitation on ships driven by propellers, various types of decentralized propeller hub caps have been...

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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