公开(公告)号：US09964116B2

公开(公告)日：2018-05-08

申请号：US14372378

申请日：2013-01-17

Applicant: EBARA CORPORATION

Inventor： Hiroyoshi Watanabe

IPC: F04D29/38 ,  F04D29/22 ,  F01D5/14

CPC classification number: F04D29/384 ,  F01D5/145 ,  F04D29/2277

Abstract: The present invention relates to an inducer geometry which can optimize the behavior stability of cavitation in an inducer having a plurality of blades of the same geometry. In the inducer having a plurality of blades of the same geometry, a blade loading at a tip side in a front half of a blade is larger than that in a rear half of the blade; and when a blade angle from a circumferential direction of the inducer is expressed by βb (degree) and a meridional distance is expressed by m (mm), an increase rate dβb/dm of the blade angle at the tip side is not less than 0.2 from a blade leading edge to a non-dimensional meridional location of 0.15, and the increase rate dβb/dm of the blade angle at a mid-span is not less than 0.25 from the blade leading edge to the non-dimensional meridional location of 0.15.

公开(公告)号：US20220186686A1

公开(公告)日：2022-06-16

申请号：US17443000

申请日：2020-03-10

Applicant: EBARA CORPORATION

Inventor： Shuichiro Honda ,  Kozo Matake ,  Hiroyoshi Watanabe ,  Toshimitsu Barada ,  Hayato Ikeda

IPC: F02K9/46 ,  F04D13/06 ,  F04D29/58

Abstract: Provided is a canned motor in which vaporization of the handling liquid is reduced in a case where a rotor rotates at high speed. A canned motor 10 includes a stator 18 disposed in a stator chamber 26, a rotor 14 disposed in a rotor chamber 12, and a stator can 7 enclosing the rotor 14. Furthermore, the canned motor 10 includes a stator chamber inlet portion 43 configured such that a cooling liquid for cooling the stator 18 flows into the stator chamber 26, and a stator chamber outlet portion 44 configured such that the cooling liquid flows out from the stator chamber 26.

公开(公告)号：US20150010394A1

公开(公告)日：2015-01-08

申请号：US14372378

申请日：2013-01-17

Applicant: EBARA CORPORATION

Inventor： Hiroyoshi Watanabe

IPC: F04D29/38 ,  F01D5/14

CPC classification number: F04D29/384 ,  F01D5/145 ,  F04D29/2277

Abstract: The present invention relates to an inducer geometry which can optimize the behavior stability of cavitation in an inducer having a plurality of blades of the same geometry. In the inducer having a plurality of blades of the same geometry, a blade loading at a tip side in a front half of a blade is larger than that in a rear half of the blade; and when a blade angle from a circumferential direction of the inducer is expressed by βb (degree) and a meridional distance is expressed by m (mm), an increase rate dβb/dm of the blade angle at the tip side is not less than 0.2 from a blade leading edge to a non-dimensional meridional location of 0.15, and the increase rate dβb/dm of the blade angle at a mid-span is not less than 0.25 from the blade leading edge to the non-dimensional meridional location of 0.15.

Abstract translation: 本发明涉及一种导流器几何形状，其可以优化具有相同几何形状的多个叶片的导流器中的气蚀的行为稳定性。 在具有相同几何形状的多个叶片的导流器中，在叶片的前半部分中的尖端侧的叶片的载荷大于叶片的后半部分中的叶片; b（b），（b）（b）（b），（m）表示从引导器圆周方向的叶片角度，以m（mm）表示，刀尖侧的叶片角度的增加率d＆bgr; b / dm 从刀片前缘到0.15的无量纲位置不小于0.2，中间跨度的叶片角度的增加率d＆bgr / b / dm不小于0.25，从叶片前缘到非 维度位置为0.15。