JPS6212596U - - Google Patents
Info
- Publication number
- JPS6212596U JPS6212596U JP10796386U JP10796386U JPS6212596U JP S6212596 U JPS6212596 U JP S6212596U JP 10796386 U JP10796386 U JP 10796386U JP 10796386 U JP10796386 U JP 10796386U JP S6212596 U JPS6212596 U JP S6212596U
- Authority
- JP
- Japan
- Prior art keywords
- propeller
- degrees
- shroud
- angle
- blade
- 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.)
- Granted
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Screw Conveyors (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
第１図は本考案のプロペラの断面図、第２図は
第１図に示したプロペラの正面図、第３図はハブ
との関係を示す翼の横断面図、第４図は本考案に
よる第２のプロペラの断面図、第５図は第４図に
示したプロペラの正面図、第６図は本考案による
第３のプロペラの断面図、第７図は第６図に示し
たプロペラの正面図である。
１……中央ハブ、２……翼、３……シユラウド
、４……シユラウドの壁の内面。
Figure 1 is a cross-sectional view of the propeller of the present invention, Figure 2 is a front view of the propeller shown in Figure 1, Figure 3 is a cross-sectional view of the blade showing its relationship with the hub, and Figure 4 is the propeller of the present invention. 5 is a front view of the propeller shown in FIG. 4, FIG. 6 is a sectional view of the third propeller according to the present invention, and FIG. 7 is a sectional view of the propeller shown in FIG. 6. It is a front view. 1... Central hub, 2... Wings, 3... Shroud, 4... Inner surface of the Shroud wall.
Claims (1)
互いに平行な前縁と後縁とを有し、断面が凸凹状
になめらかにわん曲し、前記前縁がプロペラの回
転平面に対しほぼ平行であるように角度をつけら
れ、断面形状が長手方向に沿つて一定である複数
の細長いプロペラ翼と； 翼の外端に固定され、内面と外面とを有する環
状壁の形状をなし、前記内面は、プロペラの下流
端に向けて回転軸に対し１度乃至１５度の間の角
度で集束するような截頭円錐状をし、環状壁の後
縁からプロペラ翼の前縁に接触する点の軸線方向
前方の点までほぼ平らであり、前記外面は、断面
がなめらかにわん曲した凸状をしているシユラウ
ドと； からなる船用プロペラ。 ２ 各ブレードの長手方向軸線がシユラウドの半
径に沿つて位置している実用新案登録請求の範囲
第１項記載のプロペラ。 ３ シユラウドの内面のテーパーが中心軸線に対
しほぼ６度の角度を有する実用新案登録請求の範
囲第１項記載のプロペラ。 ４ 翼が回転軸線に対し２０度乃至８０度の角度
をなしている実用新案登録請求の範囲第１項記載
のプロペラ。 ５ 翼の角度が３０度と６８度の間にある実用新
案登録請求の範囲第４項記載のプロペラ。 ６ 各翼の長手方向軸線が、プロペラの中心軸線
に垂直な平面に対し前方に１０度と後方に２０度
の間の範囲の角度をなしている実用新案登録請求
の範囲第１項記載のプロペラ。 ７ 各翼の長手方向軸線が、プロペラの中心軸線
に垂直な平面に対し前方に５度と後方に１０度の
間の範囲の角度をなしている実用新案登録請求の
範囲第６項記載のプロペラ。 ８ 各翼の長手方向軸線が、プロペラの中心軸線
に垂直な平面の後方に約７度の角度をなしている
実用新案登録請求の範囲第７項記載のプロペラ。 ９ 翼の数が２と１２の間にある実用新案登録請
求の範囲第１項記載のプロペラ。 １０ 翼の数が３と６の間にある実用新案登録請
求の範囲第１項記載のプロペラ。 １１ 各翼の後縁には、０度と３５度の間の角度
で翼の前縁と後縁を通る平面と会合する下面があ
る実用新案登録請求の範囲第１項記載のプロペラ
。 １２ シユラウドの内面の縁が斜角をなしている
実用新案登録請求の範囲第１項記載のプロペラ。 １３ シユラウドの内面の前縁の斜角がプロペラ
の中心軸線に対し１５°乃至４５°の角度である
実用新案登録請求の範囲第１２項記載のプロペラ
。 １４ シユラウドの外面の前縁が斜角をなしてい
る実用新案登録請求の範囲第１項記載のプロペラ
。 １５ シユラウドの外面の前縁の斜角がプロペラ
の中心軸線に対し５°乃至３５°の角度である実
用新案登録請求の範囲第１４項記載のプロペラ。 １６ シユラウドの前縁の斜角がわずかにくぼん
でいる実用新案登録請求の範囲第１２項乃至１４
項記載のいずれか１つに記載のプロペラ。 １７ 翼幅に対するシユラウドの長さの比率が、
プロペラの中心軸線に平行な方向に測定して、１
：１と５：１の間にある実用新案登録請求の範囲
第１項記載のプロペラ。 １８ 前記比率が約２．５：１である実用新案登
録請求の範囲第１７項記載のプロペラ。[Claims for Utility Model Registration] 1. The propeller is located around a central hub, has a leading edge and a trailing edge that are straight and parallel to each other, and has a smoothly curved cross section with an uneven shape, and the leading edge is shaped like a propeller. a plurality of elongated propeller blades angled substantially parallel to the plane of rotation and having a constant longitudinal cross-sectional shape; an annular wall fixed to the outer end of the blade and having an inner surface and an outer surface; The inner surface has a frusto-conical shape converging toward the downstream end of the propeller at an angle between 1 and 15 degrees relative to the axis of rotation, extending from the trailing edge of the annular wall to the front of the propeller blade. A shroud comprising: a shroud which is substantially flat up to a point axially forward of a point in contact with the edge, and the outer surface has a convex shape with a smoothly curved cross section; 2. The propeller of claim 1, wherein the longitudinal axis of each blade is located along the radius of the shroud. 3. The propeller according to claim 1, in which the inner surface of the shroud tapers at an angle of approximately 6 degrees with respect to the central axis. 4. The propeller according to claim 1, wherein the blades form an angle of 20 degrees to 80 degrees with respect to the axis of rotation. 5. The propeller according to claim 4 of the utility model registration, wherein the blade angle is between 30 degrees and 68 degrees. 6. The propeller according to claim 1, wherein the longitudinal axis of each blade forms an angle between 10 degrees forward and 20 degrees backward with respect to a plane perpendicular to the central axis of the propeller. . 7. The propeller according to claim 6, wherein the longitudinal axis of each blade forms an angle between 5 degrees forward and 10 degrees backward with respect to a plane perpendicular to the central axis of the propeller. . 8. The propeller of claim 7, wherein the longitudinal axis of each blade forms an angle of about 7 degrees behind a plane perpendicular to the central axis of the propeller. 9. The propeller according to claim 1, having a number of blades between 2 and 12. 10. The propeller according to claim 1, wherein the number of blades is between 3 and 6. 11. The propeller of claim 1, wherein the trailing edge of each blade has a lower surface that meets a plane passing through the leading and trailing edges of the blade at an angle between 0 degrees and 35 degrees. 12. The propeller according to claim 1, wherein the inner edge of the shroud is beveled. 13. The propeller according to claim 12, wherein the leading edge of the inner surface of the shroud has an oblique angle of 15° to 45° with respect to the central axis of the propeller. 14. The propeller according to claim 1, wherein the leading edge of the outer surface of the shroud is beveled. 15. The propeller according to claim 14, wherein the leading edge of the outer surface of the shroud has an oblique angle of 5° to 35° with respect to the central axis of the propeller. 16 Utility model registration claims 12 to 14 in which the oblique angle of the leading edge of the shroud is slightly concave
The propeller according to any one of the paragraphs. 17 The ratio of the shroud length to the wingspan is
Measured in the direction parallel to the center axis of the propeller, 1
1 and 5:1. 18. The propeller of claim 17, wherein the ratio is approximately 2.5:1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NZ18829878 | 1978-08-30 | ||
| NZ18829879A NZ188298A (en) | 1978-08-30 | 1979-05-23 | Shrouded marine propeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6212596U true JPS6212596U (en) | 1987-01-26 |
| JPH021199Y2 JPH021199Y2 (en) | 1990-01-11 |
Family
ID=26650040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986107963U Expired JPH021199Y2 (en) | 1978-08-30 | 1986-07-14 |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPH021199Y2 (en) |
| BR (1) | BR7905471A (en) |
| DK (1) | DK155826C (en) |
| NO (1) | NO148179C (en) |
| NZ (1) | NZ188298A (en) |
| ZA (1) | ZA794599B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1325395A (en) * | 1971-11-16 | 1973-08-01 | Townshend R C | Marine ring propellers |
| JPS5246131U (en) * | 1975-09-29 | 1977-04-01 | ||
| JPS52156098U (en) * | 1976-05-20 | 1977-11-26 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2426742A (en) * | 1943-11-20 | 1947-09-02 | Felix W Pawlowski | Screw propeller |
| US3745918A (en) * | 1971-12-23 | 1973-07-17 | Ibm | Wide base type carrier |
-
1979
- 1979-05-23 NZ NZ18829879A patent/NZ188298A/en unknown
- 1979-08-24 BR BR7905471A patent/BR7905471A/en unknown
- 1979-08-28 NO NO792779A patent/NO148179C/en unknown
- 1979-08-29 DK DK360979A patent/DK155826C/en not_active IP Right Cessation
- 1979-08-30 ZA ZA00794599A patent/ZA794599B/en unknown
-
1986
- 1986-07-14 JP JP1986107963U patent/JPH021199Y2/ja not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1325395A (en) * | 1971-11-16 | 1973-08-01 | Townshend R C | Marine ring propellers |
| JPS5246131U (en) * | 1975-09-29 | 1977-04-01 | ||
| JPS52156098U (en) * | 1976-05-20 | 1977-11-26 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH021199Y2 (en) | 1990-01-11 |
| NO148179C (en) | 1983-08-24 |
| BR7905471A (en) | 1980-07-15 |
| ZA794599B (en) | 1980-09-24 |
| NZ188298A (en) | 1982-12-07 |
| DK360979A (en) | 1980-03-01 |
| DK155826B (en) | 1989-05-22 |
| DK155826C (en) | 1989-10-30 |
| NO148179B (en) | 1983-05-16 |
| NO792779L (en) | 1980-03-03 |
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