CN103507934A - Efficient ducted propeller - Google Patents
Efficient ducted propeller Download PDFInfo
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- CN103507934A CN103507934A CN201210204505.0A CN201210204505A CN103507934A CN 103507934 A CN103507934 A CN 103507934A CN 201210204505 A CN201210204505 A CN 201210204505A CN 103507934 A CN103507934 A CN 103507934A
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- Prior art keywords
- propeller
- efficient
- groove
- conduit
- duct
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Abstract
The invention relates to an efficient ducted propeller which comprises a duct and paddles. The efficient ducted propeller is characterized in that a groove is formed in the inner surface of the duct, and the position of the groove corresponds to the periphery positions of the tail ends of the paddles. Compared with an existing ducted propeller, according to the efficient ducted propeller, due to the fact that the gaps between the tail ends of the paddles and the inner wall of the duct are enlarged, the groove with a certain gradient is formed, the probability that sundries are clamped between the duct and the paddles is reduced, the propulsive force of the propeller is enlarged, and therefore the working efficiency of the propeller is improved.
Description
Technical field
The present invention relates to ship domain, particularly a kind of shrouded propeller.
Technical background
Shrouded propeller is a kind of driving tool of boats and ships, refers at screw propeller and around adds mozzle, and at circular sleeve of common screw propeller peripheral equipment, sleeve relatively simple for structure, it can be fixed, and is called A/C; Also can rotate, be called steering nozzle.Wherein steering nozzle, except rising guide functions, also plays a part rudder.Conduit divides two classes, and a class conduit accelerates the current at screw propeller place, claims acceleration duct.Acceleration duct can increase the efficiency of heavily loaded screw propeller, and conduit itself produces positive thrust.At present, acceleration duct has been widely used in tugboat, push boat, trawlboat; Another kind of conduit slows down the current at screw propeller place, is called decelerating duct.The conduit of deceleration current is for increasing the static pressure acting on screw blade, and conduit, by producing a negative thrust, can be put off the cavity limit of screw propeller, and reduces the noise of blade tip harassing and wrecking, mostly is Military Ship and adopts.
Shrouded propeller is compared common screw propeller, and advantage is to utilize mozzle effect, can increase by 30% to 35% thrust, to meet the needs of navigation.Be mainly used in, on some tugboats, push boat and cargo ship, can increasing thrust.At present, shrouded propeller mainly contains following major defect: the gap of pipe inner wall and propeller blade tip is very little, and pasture and water foreign material easily snap in; If there is deformation of guide tube, blade tip and pipe inner wall bump against, and can affect the normal navigation of boats and ships.
Summary of the invention
The present invention is directed to the shortcoming of above-mentioned shrouded propeller, study and improve, a kind of efficient shrouded propeller is provided, its more existing shrouded propeller, advantage is to prevent that foreign material from snapping in conduit, and can improve the propulsive force of screw propeller.
In order to address the above problem, the present invention adopts following scheme:
A shrouded propeller, comprises conduit and blade, it is characterized in that, the inside face of described conduit is provided with groove, and the position of described groove is corresponding to the peripheral position of described blade tip.
Further technical scheme is:
Described groove comprises fore-end and rear end part, between described fore-end and rear end part, has gradient; ; The gradient of described fore-end is less than the gradient of rear end part; Described groove can comprise a plurality of.
Technique effect of the present invention is:
The more existing shrouded propeller of the present invention, owing to having increased blade tip and pipe inner wall Jian gap, and the groove of certain slope is set, therefore having reduced foreign material snaps in the possibility between conduit and blade, and increased the propulsive force of screw propeller, thereby improved the work efficiency of screw propeller.
Accompanying drawing explanation
Fig. 1 is that master of the present invention looks perspective view.
Fig. 2 is conduit cutaway view of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
See Fig. 1, the present invention includes conduit 1 and blade 2, it is characterized in that, the inside face of described conduit 1 is provided with groove 3, and the position of described groove 3 is corresponding to the peripheral position of the tip 4 of described blade 2.See Fig. 2, the groove 3 of conduit 1 comprises fore-end 31 and rear end part 30, fore-end 31 is near the miner diameter end 5 of conduit 1,30 of fore-end 31 and rear end parts have gradient, the gradient of fore-end 31 is less than the gradient of rear end part 30, is beneficial to the discharge of foreign material and the propulsive force of increase screw propeller; Groove 3 can comprise a plurality of, and its number is set according to the load-carrying of the manufacturing cost of screw propeller and boats and ships.
Claims (4)
1. an efficient shrouded propeller, comprises conduit and blade, it is characterized in that, the inside face of described conduit is provided with groove, and the position of described groove is corresponding to the peripheral position of described blade tip.
2. according to efficient shrouded propeller claimed in claim 1, it is characterized in that described groove comprises fore-end and rear end part, has gradient between described fore-end and rear end part.
3. according to the efficient shrouded propeller described in claim 1 or 2, it is characterized in that the gradient of described fore-end is less than the gradient of rear end part.
4. according to efficient shrouded propeller claimed in claim 1, it is characterized in that described groove can comprise a plurality of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210204505.0A CN103507934A (en) | 2012-06-18 | 2012-06-18 | Efficient ducted propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210204505.0A CN103507934A (en) | 2012-06-18 | 2012-06-18 | Efficient ducted propeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103507934A true CN103507934A (en) | 2014-01-15 |
Family
ID=49891478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210204505.0A Pending CN103507934A (en) | 2012-06-18 | 2012-06-18 | Efficient ducted propeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103507934A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106828849A (en) * | 2017-02-22 | 2017-06-13 | 哈尔滨工程大学 | A kind of catheter propeller of the bionical conduit of application |
| CN107298159A (en) * | 2017-06-23 | 2017-10-27 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of new and effective ducted propeller |
| CN114180020A (en) * | 2021-12-22 | 2022-03-15 | 欧振玉 | Marine ducted propeller |
-
2012
- 2012-06-18 CN CN201210204505.0A patent/CN103507934A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106828849A (en) * | 2017-02-22 | 2017-06-13 | 哈尔滨工程大学 | A kind of catheter propeller of the bionical conduit of application |
| CN107298159A (en) * | 2017-06-23 | 2017-10-27 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of new and effective ducted propeller |
| CN114180020A (en) * | 2021-12-22 | 2022-03-15 | 欧振玉 | Marine ducted propeller |
| CN114180020B (en) * | 2021-12-22 | 2023-02-03 | 欧振玉 | Marine ducted propeller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |