公开(公告)号：EP2808550B1

公开(公告)日：2018-10-17

申请号：EP13740553.6

申请日：2013-01-10

申请人： Mitsubishi Heavy Industries, Ltd.

发明人： SANO, Takeshi ,  FUKAO, Shinji ,  ISHIZAKA, Koichi ,  NIU, Kenichi ,  FUKUDA, Yuya

IPC分类号： F04D29/041 ,  F04D29/22 ,  F04D29/42

CPC分类号： F04D29/041 ,  F04D1/00 ,  F04D29/0416 ,  F04D29/051 ,  F04D29/2238 ,  F04D29/2255 ,  F04D29/2266 ,  F04D29/684 ,  F04D29/688

摘要： A centrifugal fluid machine includes an impeller (4) that has a front shroud (41) arranged on one side in an axial direction, a rear shroud (42) arranged on the other side in the axial direction, and a plurality of blades (43) provided side by side in a circumferential direction between the front shroud and the rear shroud and is rotatably supported within a casing (2); a suction passage (2A) that allows a fluid to be sucked therethrough in the axial direction toward the impeller with the rotation of the impeller; a discharge passage (2B) that allows a fluid delivered under pressure by the impeller with the rotation of the impeller to be discharged in a direction intersecting the axial direction of the impeller; and a first flow path (5A) that communicates with the discharge passage, leads to the suction passage through a gap between the casing and the rear shroud, and an opening (5Aa) that opens toward the downstream side of the suction passage in a suction direction of a fluid. The opening area of the opening is set so that the ejection speed (Vs) of a fluid ejected from the opening to the suction passage is matched with the suction speed (V) of a fluid sucked into the suction passage.

公开(公告)号：EP2808550A1

公开(公告)日：2014-12-03

申请号：EP13740553.6

申请日：2013-01-10

申请人： Mitsubishi Heavy Industries, Ltd.

发明人： SANO, Takeshi ,  FUKAO, Shinji ,  ISHIZAKA, Koichi ,  NIU, Kenichi ,  FUKUDA, Yuya

IPC分类号： F04D29/041 ,  F04D29/22 ,  F04D29/42

CPC分类号： F04D29/041 ,  F04D1/00 ,  F04D29/0416 ,  F04D29/051 ,  F04D29/2238 ,  F04D29/2255 ,  F04D29/2266 ,  F04D29/684 ,  F04D29/688

摘要： A centrifugal fluid machine includes an impeller (4) that has a front shroud (41) arranged on one side in an axial direction, a rear shroud (42) arranged on the other side in the axial direction, and a plurality of blades (43) provided side by side in a circumferential direction between the front shroud and the rear shroud and is rotatably supported within a casing (2); a suction passage (2A) that allows a fluid to be sucked therethrough in the axial direction toward the impeller with the rotation of the impeller; a discharge passage (2B) that allows a fluid delivered under pressure by the impeller with the rotation of the impeller to be discharged in a direction intersecting the axial direction of the impeller; and a first flow path (5A) that communicates with the discharge passage, leads to the suction passage through a gap between the casing and the rear shroud, and an opening (5Aa) that opens toward the downstream side of the suction passage in a suction direction of a fluid. The opening area of the opening is set so that the ejection speed (Vs) of a fluid ejected from the opening to the suction passage is matched with the suction speed (V) of a fluid sucked into the suction passage.

摘要翻译： 本发明提供一种离心流体机械，其具有：叶轮（4），其具有配置在轴向一侧的前轮罩（41），配置在轴向另一侧的后轮罩（42），以及多个叶片（43 ）在所述前罩和所述后罩之间沿圆周方向并排设置并且可旋转地支撑在壳体（2）内; 吸入通道（2A），其允许流体通过叶轮的旋转沿轴向方向朝向叶轮吸入; 排出通路（2B），该排出通路（2B）使随着所述叶轮的旋转而被所述叶轮压送的流体向与所述叶轮的轴向交叉的方向排出; 和与排出通路连通的第一流路（5A），通过壳体与后部护罩之间的间隙而导入吸入通路，以及在吸入通路内向吸入通路的下游侧开口的开口部（5Aa） 流体的方向。 开口的开口面积被设定成使得从开口喷射到吸入通道的流体的喷射速度（Vs）与被吸入到吸入通道中的流体的吸入速度（V）匹配。