JPS5583693A - Air bubble ejecting vane - Google Patents
Air bubble ejecting vaneInfo
- Publication number
- JPS5583693A JPS5583693A JP15826978A JP15826978A JPS5583693A JP S5583693 A JPS5583693 A JP S5583693A JP 15826978 A JP15826978 A JP 15826978A JP 15826978 A JP15826978 A JP 15826978A JP S5583693 A JPS5583693 A JP S5583693A
- Authority
- JP
- Japan
- Prior art keywords
- neighborhood
- propeller
- vane
- air bubbles
- cavities
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
PURPOSE: To reduce cavitation noise and prevent cavitation-erosion by the structure wherein an air ejection hole is provided in the neighborhood of the front edge of a propeller and also in the neighborhood of the place where the cavities collapse, and air bubbles are ejected from these holes.
CONSTITUTION: When air bubbles drawn from air intake 1a of propeller vane 6 are ejected from air ejection holes 7a and 7b provided on forward-moving surface 6a and backward-moving surface 6b in the neighborhood of front edge 6c of propeller vane 6, films 8a and 8b of air bubbles cover propeller 6 and shut off noise from outside. Further, air bubbles are ejected from air ejection holes 7c and 7d, which are provided respectively in the neighborhood of back edge 6d of backward-moving surface 6b and front edge 6c of forward-moving surface 6a of propeller vane 6 in the neighborhood of places 10a and 10b where cavities 9a and 9b produced by flow of water b collapse. Since air bubbles keep cavities-collapsing places 10a and 10b away from the propeller vane surface as far as possible, the shock pressure produced at the time of collapse of cavities is alleviated so that cavitation-erosion is prevented.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15826978A JPS5583693A (en) | 1978-12-21 | 1978-12-21 | Air bubble ejecting vane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15826978A JPS5583693A (en) | 1978-12-21 | 1978-12-21 | Air bubble ejecting vane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5583693A true JPS5583693A (en) | 1980-06-24 |
Family
ID=15667910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15826978A Pending JPS5583693A (en) | 1978-12-21 | 1978-12-21 | Air bubble ejecting vane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5583693A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6042189A (en) * | 1983-08-18 | 1985-03-06 | Katsuhiko Sakata | Wave suppression screw |
| US5192191A (en) * | 1990-05-28 | 1993-03-09 | Sanshin Kogyo Kabushiki Kaisha | Propeller vane structure for marine propulsion unit |
| CN102883948A (en) * | 2010-05-10 | 2013-01-16 | 三星重工业株式会社 | Propulsion apparatus for a marine vessel and marine vessel comprising same |
| CN106005331A (en) * | 2016-06-23 | 2016-10-12 | 舟山市定海区龙叶螺旋桨制造有限公司 | Energy-saving propeller |
| CN109018281A (en) * | 2018-08-02 | 2018-12-18 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Propeller arrangement and marine propeller |
-
1978
- 1978-12-21 JP JP15826978A patent/JPS5583693A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6042189A (en) * | 1983-08-18 | 1985-03-06 | Katsuhiko Sakata | Wave suppression screw |
| US5192191A (en) * | 1990-05-28 | 1993-03-09 | Sanshin Kogyo Kabushiki Kaisha | Propeller vane structure for marine propulsion unit |
| CN102883948A (en) * | 2010-05-10 | 2013-01-16 | 三星重工业株式会社 | Propulsion apparatus for a marine vessel and marine vessel comprising same |
| KR101271693B1 (en) * | 2010-05-10 | 2013-06-04 | 삼성중공업 주식회사 | Propulsion apparatus for ship and ship including the same |
| CN106005331A (en) * | 2016-06-23 | 2016-10-12 | 舟山市定海区龙叶螺旋桨制造有限公司 | Energy-saving propeller |
| CN109018281A (en) * | 2018-08-02 | 2018-12-18 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Propeller arrangement and marine propeller |
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