Stirring propeller with blades made of sheet bent along two longitudinal bends
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01F-007/22
B01F-007/00
출원번호
US-0301559
(2015-03-31)
등록번호
US-10105663
(2018-10-23)
우선권정보
EP-14305498 (2014-04-04)
국제출원번호
PCT/EP2015/056951
(2015-03-31)
국제공개번호
WO2015/150353
(2015-10-08)
발명자
/ 주소
Cognart, Patrice
Savreux, Frederic
출원인 / 주소
MILTON ROY EUROPE
대리인 / 주소
Young & Thompson
인용정보
피인용 횟수 :
0인용 특허 :
46
초록▼
Stirrer (M) that includes at least two blades and is able to be fixed to a rotary shaft, wherein each blade has a leading edge facing the fluid to be stirred and a trailing edge facing away from the leading edge, and wherein each blade is obtained by bending a flat metal sheet, each blade having two
Stirrer (M) that includes at least two blades and is able to be fixed to a rotary shaft, wherein each blade has a leading edge facing the fluid to be stirred and a trailing edge facing away from the leading edge, and wherein each blade is obtained by bending a flat metal sheet, each blade having two longitudinal bends, the length of each bend being greater than 60% of the maximum radius of the blade.
대표청구항▼
1. A stirring member (M), comprising: a hub fastenable to a rotational shaft; andat least two blades attached to the hub,wherein each blade of the at least two blades has a leading edge facing fluid to be stirred and a trailing edge facing away from the leading edge,wherein each blade has an outer e
1. A stirring member (M), comprising: a hub fastenable to a rotational shaft; andat least two blades attached to the hub,wherein each blade of the at least two blades has a leading edge facing fluid to be stirred and a trailing edge facing away from the leading edge,wherein each blade has an outer edge, with a distal end of the outer edge being remote from the hub and a proximal end that opposite to the distal end and nearest to the hub,wherein each blade is comprised of a bended flat sheet, the bended flat sheet of each blade having two longitudinal bends, a length of each of the longitudinal bends being greater than 60% of a maximum radius of the blade,wherein a radial axis of each blade is defined as through a center of rotation of the stirring member and perpendicular to the outer edge,an angle of incidence is defined as being an angle between the leading edge and the radial axis of the blade passing through the center of rotation and perpendicular to the outer edge,wherein the angle of incidence is positive, so that the distal end of the outer edge meets the fluid before the proximal end when the stirring member is in rotation, andwherein the angle of incidence is between 6° and 15°. 2. The stirring member (M) as claimed in claim 1, wherein the length of each bend is greater than 75% of the maximum radius of the blade. 3. The stirring member (M) as claimed in claim 2 wherein the two bends are parallel. 4. The stirring member (M) as claimed in claim 2, wherein at least one of the bends is perpendicular to the outer edge of the propeller. 5. The stirring member (M) as claimed in claim 1 wherein the two bends are parallel. 6. The stirring member (M) as claimed in claim 5, wherein at least one of the bends is perpendicular to the outer edge of the propeller. 7. The stirring member (M) as claimed in claim 1, wherein at least one of the bends is perpendicular to the outer edge of the propeller. 8. The stirring member (M) as claimed in claim 1, wherein the stirring member comprises only two blades. 9. The stirring member (M) as claimed in claim 1, wherein each blade has, on account of the presence of the two bends, a substantially U-shaped cross section in a plane parallel to an axis of rotation of the stirring member and parallel to the outer edge of the blade. 10. The stirring member (M) as claimed in claim 1, wherein each blade has, on account of the presence of the two bends, a substantially Z-shaped cross section in a plane parallel to an axis of rotation of the stirring member and parallel to the outer edge of the blade. 11. The stirring member (M) as claimed in claim 1, wherein, a section plane is defined as a plane transverse to a longitudinal direction of the blade,an intersection line is defined as an intersection between the section plane and a plane orthogonal to an axis of rotation of the stirring member,a departure angle is defined as an angle between the intersection line and a trailing edge face of the blade, andthe departure angle is between 30° and 70°. 12. The stirring member (M) as claimed in claim 1, wherein, with a width of a distal end of the blade is denoted as “l” and a width at a base of the blade near an axis of rotation of the stirring member is denoted “L”, l >0.5 L. 13. The stirring member (M) as claimed in claim 1, wherein, for each blade, an angle of attack (a) between a face of the blade containing the leading edge and a central face of the blade is between 13 and 25°. 14. The stirring member (M) as claimed in claim 1, wherein, with a width of a distal end of the blade is denoted as “l” and a width at a base of the blade near an axis of rotation of the stirring member is denoted “L”, l >0.75x L. 15. The stirring member (M) of claim 1, wherein a first bend (A) of the two longitudinal bends, being defined as a one of the two longitudinal bends which in rotation of the stirring member will meet the fluid first, is located along an axis passing through an axis of rotation of the stirring member. 16. The stirring member (M) of claim 1, wherein the distal end of the trailing edge is situated forward of the proximal end of said trailing edge and with respect to a direction of rotation of the stirring member, so that said distal end of the trailing edge meets the fluid before said proximal end of the trailing edge. 17. The stirring member (M) as claimed in claim 1, wherein, an angle of departure is defined between i) a face of the blade having the trailing edge, and ii) a plane orthogonal to the rotation axis, said departure angle being between 30° an 70°.
Entat Marcel (7 Bis ; Boulevard Anatole 92100 Boulogne-Billancourt FRX), Method of producing propeller blades and improved propeller blades obtained by means of this method.
Weetman Ronald J., Mixing impeller system having blades with slots extending essentially all the way between tip and hub ends thereof which facilitate mass transfer.
Mattson, Douglas J.; Gee, John F.; Susalla, Jeffrey R.; Bergman, Ryan K.; Renkel, Jr., Ronald R., Mixing systems, methods, and devices with extendible impellers.
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