公开(公告)号：US20200378389A1

公开(公告)日：2020-12-03

申请号：US16326640

申请日：2017-03-29

申请人： MITSUBISHI HEAVY INDUSTRIES, LTD. ,  MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.

发明人： Naomichi SHIBATA ,  Byeongil AN ,  Akihiro SUGIYAMA ,  Yutaka FUJITA ,  Tadashi KANZAKA

IPC分类号： F04D25/06 ,  F04D29/10 ,  F04D29/28 ,  F04D29/056

摘要： An electric supercharger includes: a compressor impeller; a motor configured to transmit a driving force to the compressor impeller via a rotational shaft; a back-surface side casing facing a back surface of the compressor impeller via a gap and surrounding the rotational shaft; a bearing disposed between the back-surface side casing and the rotational shaft so as to support the rotational shaft rotatably; and a mechanical seal positioned between the back surface of the compressor impeller and the bearing in an axial direction of the compressor impeller and configured to seal a gap between the rotational shaft and the back-surface side casing.

公开(公告)号：US20180003105A1

公开(公告)日：2018-01-04

申请号：US15546854

申请日：2015-09-14

申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.

发明人： Yuya KOJIMA ,  Takashi NAMBU ,  Naomichi SHIBATA ,  Takaya FUTAE ,  Shuichi ISAYAMA

IPC分类号： F02B39/14 ,  F01D25/16 ,  F02B37/00 ,  F16C17/18

CPC分类号： F02B39/14 ,  F01D25/16 ,  F01D25/18 ,  F02B37/00 ,  F02B39/00 ,  F05D2220/40 ,  F16C17/18

摘要： A turbocharger according to an embodiment of the present invention includes a rotating shaft, a compressor, a turbine, a compressor-side floating bearing and a turbine-side floating bearing that rotatably support the rotating shaft, and a bearing housing that houses the compressor-side floating bearing and the turbine-side floating bearing, the bearing housing being internally provided with a turbine-side oil feeding passage through which oil to be fed to the turbine-side floating bearing flows and a compressor-side oil feeding passage through which oil to be fed to the compressor-side floating bearing flows. A ratio of an oil feeding pressure for oil at an outlet of the compressor-side oil feeding passage to an oil feeding pressure for oil at an outlet of the turbine-side oil feeding passage is configured to be higher than 1.0 and lower than 1.5.

公开(公告)号：US20180080499A1

公开(公告)日：2018-03-22

申请号：US15569437

申请日：2015-06-04

申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.

发明人： Byeongil AN ,  Hiroshi SUZUKI ,  Naomichi SHIBATA

IPC分类号： F16C25/08 ,  F16C27/06 ,  F16C35/077 ,  F16C35/04

CPC分类号： F16C25/083 ,  F01D25/164 ,  F05D2220/40 ,  F16C19/525 ,  F16C19/547 ,  F16C27/066 ,  F16C35/042 ,  F16C35/077 ,  F16C2360/44 ,  F16C2380/26 ,  H02K5/1732

摘要： The present invention is provided with: a rolling bearing (16) for rotatably supporting a rotating shaft (6); a housing (17) for externally covering the rolling bearing (16) in the radial direction of the rotating shaft (6); a damping member (18) disposed inside the housing (17) in the radial direction of the rotating shaft (6) with a gap (S1) therebetween and provided so as to be incapable of being displaced relative to an outer ring (21) in the radial direction and circumferential direction of the rotating shaft (6); and a damper (19) provided between the housing (17) and the damping member (18) to support the damping member (18) so that the damping member (18) can be displaced relative to the housing (17) in the axial direction of the rotating shaft (6), the damper (19) absorbing the displacement of the damping member (18) in the radial direction of the rotating shaft (6).

公开(公告)号：US20150337850A1

公开(公告)日：2015-11-26

申请号：US14646213

申请日：2012-11-22

申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.

发明人： Byeongil AN ,  Hiroshi SUZUKI ,  Noriyuki HAYASHI ,  Naomichi SHIBATA

IPC分类号： F04D29/063 ,  F04D25/06 ,  F04D29/056 ,  F02M25/07 ,  F04D29/28 ,  F04D29/58 ,  F02B37/04 ,  F04D17/10 ,  F04D29/42

CPC分类号： F04D29/063 ,  F01D25/125 ,  F02B37/04 ,  F02B39/00 ,  F02B39/005 ,  F02B39/10 ,  F02B39/14 ,  F02M26/03 ,  F04D17/10 ,  F04D25/024 ,  F04D25/06 ,  F04D29/056 ,  F04D29/059 ,  F04D29/284 ,  F04D29/4206 ,  F04D29/584 ,  F05D2220/40 ,  F16C33/6603 ,  F16C37/007 ,  F16C2360/44 ,  F16C2380/26 ,  Y02T10/144

摘要： The present invention provides a supercharger with an electric motor having improved cooling performance for bearings, in the case of employing a grease lubrication system as a lubrication system of the bearings.A supercharger with an electric motor includes: a rotary shaft; a compressor wheel; a compressor housing for housing the compressor wheel; an electric motor including a motor rotor and a motor stator, and giving rotation force to the rotary shaft; a motor housing, for housing the electric motor; a first grease-sealed bearing for rotatably supporting the rotary shaft; and a bearing housing for housing the first grease-sealed bearing, and disposed between the compressor housing and the motor housing. Inside the bearing housing, a cooling passage through which a cooling medium flows is provided in a circumferential direction on an outer circumferential side of the first grease-sealed bearing.

摘要翻译： 在采用脂润滑系统作为轴承的润滑系统的情况下，本发明提供了一种具有改进的轴承冷却性能的电动机的增压器。 具有电动机的增压器包括：旋转轴; 压缩机轮; 用于容纳压缩机叶轮的压缩机壳体; 包括电动机转子和电动机定子的电动机，并向所述旋转轴提供旋转力; 电机壳体，用于容纳电动机; 用于可旋转地支撑旋转轴的第一润滑脂密封轴承; 以及用于容纳第一润滑脂密封轴承的轴承壳体，并且设置在压缩机壳体和电动机壳体之间。 在轴承壳体内部，在第一润滑脂密封轴承的外周侧沿圆周方向设置冷却介质流过的冷却通路。