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1. 发明授权

US11066982B2 Centrifugal compressor and turbocharger 有权
公开(公告)号：US11066982B2
公开(公告)日：2021-07-20
申请号：US16596126
申请日：2019-10-08
申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.
发明人： Isao Tomita , Yoshihiro Hayashi
IPC分类号： F04D29/42 , F02B33/40 , F04D17/10 , F04D29/28 , F04D27/02 , F04D29/68
摘要： A centrifugal compressor operable in a wide operation range under a condition accompanied with pulsations of a pressure and a flow rate. The centrifugal compressor has a casing including at least one recirculation channel that includes a first inlet slit connected to an air flow passage on a downstream side of a leading edge in an air flow direction of the air flow passage, a second inlet slit connected to the air flow passage on a downstream side of the first inlet slit in the air flow direction of the air flow passage, a first vane disposed on a downstream side of the first inlet slit or in the first inlet slit in the at least one recirculation channel, and a second vane disposed on a downstream side of the second inlet slit or in the second inlet slit in the at least one recirculation channel.

2. 发明授权

US10655637B2 Scroll casing and centrifugal compressor 有权
公开(公告)号：US10655637B2
公开(公告)日：2020-05-19
申请号：US15578022
申请日：2015-10-29
申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.
发明人： Kenichiro Iwakiri , Isao Tomita , Takashi Shiraishi
IPC分类号： F04D29/44 , F04D29/66 , F04D29/42 , F04D17/10
摘要： A scroll casing forms a scroll flow passage of a centrifugal compressor, and, provided that, in a cross section of the scroll flow passage, Eo is an outer end of the scroll flow passage in a radial direction of the centrifugal compressor, Ef is a front end of the scroll flow passage in an axial direction of the centrifugal compressor, and Mw is a middle point of a maximum flow-passage width Wmax of the scroll flow passage in the radial direction, a flow passage height H of the scroll flow passage in the axial direction gradually increases from a position of the outer end Eo to a position of the front end Ef with respect to the radial direction, and the scroll flow passage has a recirculation flow suppressing cross section in which the front end Ef is disposed on an inner side, in the radial direction, of the middle point Mw, in a section disposed at least partially in a region closer to a scroll start than a connection position of the scroll start and a scroll end.

3. 发明授权

US10167877B2 Centrifugal compressor 有权
公开(公告)号：US10167877B2
公开(公告)日：2019-01-01
申请号：US14762138
申请日：2013-02-22
申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.
发明人： Seiichi Ibaraki , Isao Tomita , Hiroshi Suzuki
IPC分类号： F04D29/48 , F04D17/10 , F04D27/02 , F04D29/42 , F04D29/46 , F04D29/44
摘要： An object of the present invention is to decrease a surging limit flow rate at a low flow rate time, by increasing the inflow velocity to the blade of the impeller wheel, by providing a resistive element that narrows in the radial direction a passage cross section of an air intake passage which communicates between a impeller wheel of a centrifugal compressor and an air intake opening.The centrifugal compressor includes: the compressor housing 9 having the air intake opening 13 opened in a rotary shaft direction, and the air intake passage 11; and the impeller wheel 7 for compressing the air flowing in from the air intake opening 13, inside the housing. The resistive elements 27 and 43 against the air intake flow are provided in either the inner peripheral wall 23 side portion or the center side portion of the air intake passage 11, so that, at the low flow rate time, a cross-sectional area of the air intake passage 11 is narrowed by the resistive elements 27 and 43 thereby increasing the inflow velocity to the blade 19 of the impeller wheel, and the intake air flow is biased to the hub side of the blade 19, and the intake air flow is biased to flow to the hub side or the shroud side of the blade 19.

4. 发明授权

US09797320B2 Engine system with intake bypass device 有权
公开(公告)号：US09797320B2
公开(公告)日：2017-10-24
申请号：US14911591
申请日：2013-10-11
申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.
发明人： Takao Yokoyama , Seiichi Ibaraki , Isao Tomita , Katsuyuki Osako
IPC分类号： F02B33/44 , F01N3/00 , F02D41/00 , F01N5/02 , F02B37/16 , F02B37/20 , F01N3/02 , F01N3/10 , F02B33/40 , F02D41/26 , F01N3/05 , F01N3/28 , F02B39/00 , F01D17/14 , F02C6/12 , F01D17/10 , F01D25/10 , F02C3/13 , F02C9/18 , F04D27/02
CPC分类号： F02D41/0007 , F01D17/105 , F01D17/146 , F01D25/10 , F01N3/0205 , F01N3/055 , F01N3/10 , F01N3/2889 , F01N5/02 , F02B33/40 , F02B37/168 , F02B37/20 , F02B39/005 , F02B2037/162 , F02C3/13 , F02C6/12 , F02C9/18 , F02D41/26 , F04D27/0223 , F05D2270/101 , F05D2270/301 , F05D2270/3013 , Y02T10/144 , Y02T10/16 , Y02T10/20
摘要： An object is to provide an engine system including an intake bypass device whereby it is possible to expand the operation range of a compressor without causing the output of a turbine to become insufficient. An engine system includes an intake bypass device including a bypass channel connecting a downstream side of a compressor of a turbocharger in an intake channel and an upstream side of a turbine of the turbocharger in an exhaust channel, a bypass valve disposed in the bypass channel and configured to control a flow of compressed intake air in the bypass channel, and a heating unit for heating the compressed intake air flowing through the bypass channel.

5. 发明授权

US09790957B2 Air intake duct structure for centrifugal fluid machine 有权
公开(公告)号：US09790957B2
公开(公告)日：2017-10-17
申请号：US14379691
申请日：2013-02-26
申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.
发明人： Isao Tomita , Masaki Tojo , Takao Yokoyama
IPC分类号： F04D17/10 , F04D29/42 , F02M35/10 , F04D29/44 , F02B39/16
CPC分类号： F04D29/4213 , F02B39/16 , F02M35/10124 , F02M35/10157 , F04D17/10 , F04D29/441 , F05D2220/40 , F05D2250/51 , Y02T10/144 , Y02T10/146
摘要： An object is to provide an air intake duct structure for a centrifugal fluid machine, capable of swirling the fluid introduced into the impeller in the reverse direction to increase the pressure ratio when the flow rate is high and swirling the fluid in the forward direction to avoid a surging when the flow rate is low, as well as securing a wide operating range, without using mechanical means. The centrifugal fluid machine 1 includes an impeller 12 mounted to a rotation shaft and a housing 4 for housing the impeller 12. The air intake duct structure 10 is for directing a fluid “f” to a rotational center 12a of the impeller 12 housed in the housing 4 via an intake duct portion 4a of the housing 4 protruding in an axial direction of the rotation shaft, the fluid “f” flowing in a substantially orthogonal direction to a rotational axis line 3. The air intake duct structure 10 comprises an inflow part 14 extending in the substantially orthogonal direction to the rotation axis line 3 and a transition part 16 connecting the inflow part 14 and the intake duct portion 14a of the housing 4. There is a virtual plane 20 orthogonal to the rotational axis line 3 and passing through a flow path cross-section of the inflow part 14, where an intersection 22 of the virtual plane 20 and the rotational axis line 3 is positioned within the transition part 16.

6. 发明申请

US20150104296A1 VARIABLE GEOMETRY TURBOCHARGER 有权
标题翻译：可变几何涡轮机
公开(公告)号：US20150104296A1
公开(公告)日：2015-04-16
申请号：US14381237
申请日：2013-02-26
申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.
发明人： Takao Yokoyama , Katsuyuki Osako , Isao Tomita , Yasuaki Jinnai , Masaki Tojo , Satomi Nagae
IPC分类号： F04D27/00 , F02B37/22
CPC分类号： F04D27/002 , F01D5/141 , F01D17/16 , F01D17/165 , F02B37/22 , F02B37/24 , F02C6/12 , F05D2220/40 , F05D2250/712 , F05D2250/713 , F05D2250/75 , Y02T10/144
摘要： In a variable geometry turbocharger including a variable nozzle mechanism, an object is to enhance safety upon malfunction of the variable nozzle mechanism as well as to improve accuracy in the control of the variable nozzle mechanism by applying a moment that acts on the nozzle vanes in an opening direction securely and stably. A variable geometry turbocharger includes a plurality of nozzle vanes 41a disposed at predetermined intervals around a rotational shaft center of a turbine wheel 7 so as to surround an outer circumferential side of the turbine wheel 7 and a variable nozzle mechanism configured capable of changing a blade angle of each of the nozzle vanes 41a, each of the nozzle vanes 41a having a blade cross-section orthogonal to a nozzle shaft 41b of each nozzle vane 41a, the blade cross-section having: a concave portion 53 curved into a concave shape on at least a part of a pressure surface 45 side, the part being disposed at a trailing edge 51 side with respect to the rotational center C; and a convex portion at a leading edge 49 side with respect to the rotational center C, so that a surface shape of the pressure surface 45 side is a substantially S-shape having the concave portion and the convex portion across a boundary at a same longitudinal position as the rotational center.
摘要翻译：在包括可变喷嘴机构的可变几何涡轮增压器中，目的是增强可变喷嘴机构的故障时的安全性，并且通过施加作用在喷嘴叶片上的力矩来提高可变喷嘴机构的控制精度打开方向牢固稳定。可变几何涡轮增压器包括多个喷嘴叶片41a，其围绕涡轮机叶轮7的外周侧围绕涡轮机叶轮7的旋转轴中心以预定间隔设置，并且可变喷嘴机构构造成能够改变叶片角度每个喷嘴叶片41a，每个喷嘴叶片41a具有与每个喷嘴叶片41a的喷嘴轴41b正交的叶片横截面，叶片横截面具有：在其上弯曲成凹形的凹部53 至少一部分压力表面45侧，该部分相对于旋转中心C设置在后缘51侧; 以及相对于旋转中心C的前缘49侧的凸部，使得压力面45侧的表面形状为大致S字状，在相同的纵向上具有跨越边界的凹部和凸部位置作为旋转中心。

7. 发明授权

US11261878B2 Vaned diffuser and centrifugal compressor 有权
公开(公告)号：US11261878B2
公开(公告)日：2022-03-01
申请号：US16780094
申请日：2020-02-03
申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.
发明人： Yoshihiro Ishikawa , Isao Tomita , Kenichiro Iwakiri
IPC分类号： F04D29/44 , F04D17/10
摘要： A vaned diffuser provided on a downstream side of an impeller of a centrifugal compressor. The vaned diffuser includes: a diffuser passage forming portion having a hub-side surface and a shroud-side surface and forming an annular diffuser passage on a downstream side of the impeller; and a plurality of diffuser vanes provided in the diffuser passage at intervals in a circumferential direction of the impeller. A fillet is formed in a connection portion between each of the diffuser vanes and at least one of the hub-side surface and the shroud-side surface. Also, where R is a radius of the fillet and b is a vane height of each of the diffuser vanes, and a maximum value of R/b on a downstream side of a throat position of the diffuser passage is larger than a maximum value of R/b on an upstream side of the throat position of the diffuser passage.

8. 发明授权

US09926938B2 Variable geometry turbocharger 有权
公开(公告)号：US09926938B2
公开(公告)日：2018-03-27
申请号：US14381237
申请日：2013-02-26
申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.
发明人： Takao Yokoyama , Katsuyuki Osako , Isao Tomita , Yasuaki Jinnai , Masaki Tojo , Satomi Nagae
IPC分类号： F04D27/00 , F02B37/24 , F01D17/16 , F01D5/14 , F02B37/22 , F02C6/12
CPC分类号： F04D27/002 , F01D5/141 , F01D17/16 , F01D17/165 , F02B37/22 , F02B37/24 , F02C6/12 , F05D2220/40 , F05D2250/712 , F05D2250/713 , F05D2250/75 , Y02T10/144
摘要： In a variable geometry turbocharger including a variable nozzle mechanism, an object is to enhance safety upon malfunction of the variable nozzle mechanism as well as to improve accuracy in the control of the variable nozzle mechanism by applying a moment that acts on the nozzle vanes in an opening direction securely and stably. A variable geometry turbocharger includes a plurality of nozzle vanes 41a disposed at predetermined intervals around a rotational shaft center of a turbine wheel 7 so as to surround an outer circumferential side of the turbine wheel 7 and a variable nozzle mechanism configured capable of changing a blade angle of each of the nozzle vanes 41a, each of the nozzle vanes 41a having a blade cross-section orthogonal to a nozzle shaft 41b of each nozzle vane 41a, the blade cross-section having: a concave portion 53 curved into a concave shape on at least a part of a pressure surface 45 side, the part being disposed at a trailing edge 51 side with respect to the rotational center C; and a convex portion at a leading edge 49 side with respect to the rotational center C, so that a surface shape of the pressure surface 45 side is a substantially S-shape having the concave portion and the convex portion across a boundary at a same longitudinal position as the rotational center.

9. 发明申请

US20150050136A1 AIR INTAKE DUCT STRUCTURE FOR CENTRIFUGAL FLUID MACHINE 有权
标题翻译：离心式流化床空气吸入式结构
公开(公告)号：US20150050136A1
公开(公告)日：2015-02-19
申请号：US14379691
申请日：2013-02-26
申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.
发明人： Isao Tomita , Masaki Tojo , Takao Yokoyama
IPC分类号： F04D29/42 , F04D17/10
CPC分类号： F04D29/4213 , F02B39/16 , F02M35/10124 , F02M35/10157 , F04D17/10 , F04D29/441 , F05D2220/40 , F05D2250/51 , Y02T10/144 , Y02T10/146
摘要： An object is to provide an air intake duct structure for a centrifugal fluid machine, capable of swirling the fluid introduced into the impeller in the reverse direction to increase the pressure ratio when the flow rate is high and swirling the fluid in the forward direction to avoid a surging when the flow rate is low, as well as securing a wide operating range, without using mechanical means. The centrifugal fluid machine 1 includes an impeller 12 mounted to a rotation shaft and a housing 4 for housing the impeller 12. The air intake duct structure 10 is for directing a fluid “f” to a rotational center 12a of the impeller 12 housed in the housing 4 via an intake duct portion 4a of the housing 4 protruding in an axial direction of the rotation shaft, the fluid “f” flowing in a substantially orthogonal direction to a rotational axis line 3. The air intake duct structure 10 comprises an inflow part 14 extending in the substantially orthogonal direction to the rotation axis line 3 and a transition part 16 connecting the inflow part 14 and the intake duct portion 14a of the housing 4. There is a virtual plane 20 orthogonal to the rotational axis line 3 and passing through a flow path cross-section of the inflow part 14, where an intersection 22 of the virtual plane 20 and the rotational axis line 3 is positioned within the transition part 16.
摘要翻译：本发明的目的是提供一种用于离心式流体机械的进气管道结构，其能够相反地旋转引入叶轮的流体，以在流量高时增加压力比并且使流体沿向前方向旋转以避免当流量低时，波动起来，以及确保宽的工作范围，而不使用机械手段。离心流体机1包括安装到旋转轴的叶轮12和用于容纳叶轮12的壳体4.进气管道结构10用于将流体“f”引导到容纳在叶轮12中的叶轮12的旋转中心12a。壳体4通过沿旋转轴的轴向突出的壳体4的进气管道部分4a，流体“f”沿与旋转轴线3大致正交的方向流动。进气管道结构10包括流入部分 14沿着与旋转轴线3大致正交的方向延伸，以及连接壳体4的流入部分14和进气管道部分14a的过渡部分16.存在与旋转轴线3正交并穿过的虚拟平面20 流入部分14的流路横截面，其中虚拟平面20和旋转轴线3的交点22位于过渡部分16内。

10. 发明授权

US10801514B2 Impeller wheel and centrifugal compressor having impeller wheel 有权
公开(公告)号：US10801514B2
公开(公告)日：2020-10-13
申请号：US16266371
申请日：2019-02-04
申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.
发明人： Teng Cao , Isao Tomita , Liping Xu , Tadashi Kanzaka
IPC分类号： F04D29/30 , F04D29/28 , F01D5/14 , F01D5/34 , F04D29/68 , F01D5/04
摘要： An impeller wheel according to an embodiment includes a hub, a plurality of long blades disposed on a circumferential surface of the hub, the plurality of long blades extending from an inlet portion to an outlet portion of fluid and a plurality of short blades each disposed on the circumferential surface of the hub, the plurality of short blades extending from a downstream side of leading edges of the plurality of the long blades to the outlet portion in a flow passage formed between adjacent long blades of the plurality of long blades.In the impeller wheel, an expression β2s,full

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