公开(公告)号：US20230110735A1

公开(公告)日：2023-04-13

申请号：US17905679

申请日：2020-04-15

Applicant: IHI Corporation

Inventor： Masahiro AKIYAMA ,  Yosuke AKAMATSU

IPC: F04D29/58 ,  F04D25/06

Abstract: A centrifugal blower includes a motor part having a rotor provided on a rotating shaft of an impeller, a coil provided around the rotor, and a motor housing that accommodates a coil, an inverter part having an inverter unit that supplies drive power to the motor part, and an inverter housing connected to the motor housing and configured to accommodate the inverter unit, and a cooling fan that is provided on the rotating shaft, rotates with the impeller and allows cooling air to flow through the inverter housing and the motor housing in order, wherein the inverter unit is disposed to be arranged with respect to the coil in a direction of a rotation axis of the rotor.

公开(公告)号：US20230238845A1

公开(公告)日：2023-07-27

申请号：US18042952

申请日：2020-08-27

Applicant: IHI Corporation

Inventor： Fuminori SUZUKI ,  Takehiro JIKUMARU ,  Koji YAMAGUCHI ,  Yosuke AKAMATSU ,  Masatsugu TAKEMOTO ,  Sho MANABE

IPC: H02K3/18 ,  H02K1/14 ,  H02K9/22

CPC classification number: H02K3/18 ,  H02K1/148 ,  H02K9/225

Abstract: A stator includes a stator core having a plurality of slots opening toward an inner surface and a plurality of teeth formed between the slots adjacent to each other; and flat angle coils wound around the teeth respectively. Each of the teeth includes a widened portion having a width in a circumferential direction of the inner surface, closer to the inner surface and the widened portion becomes wider, in a cross-sectional view taken along a cross section perpendicular to a rotational axis of a rotor surrounded by the stator core.

公开(公告)号：US20240426529A1

公开(公告)日：2024-12-26

申请号：US18826200

申请日：2024-09-06

Applicant: IHI Corporation

Inventor： Ryuuta TANAKA ,  Masahiro NAKAJIMA ,  Hiroki KOBAYASHI ,  Yosuke AKAMATSU ,  Seiichiro YOSHINAGA

IPC: F25B39/02 ,  F25B41/40

Abstract: A refrigerant compressor includes a rotating body, a non-contact bearing rotatably supporting the rotating body, and a housing having an inner space to accommodate the rotating body. The rotating body includes a shaft, and a protruding part that extends from the shaft in a radial direction and that is configured to rotate together with the shaft. The housing forms a suction inlet to supply a refrigerant to the inner space, a discharge outlet to discharge the refrigerant from the inner space, and a return opening that is positioned lower than the protruding part of the rotating body in a vertical direction.

公开(公告)号：US20240426303A1

公开(公告)日：2024-12-26

申请号：US18826197

申请日：2024-09-06

Applicant: IHI Corporation

Inventor： Ryuuta TANAKA ,  Yosuke AKAMATSU ,  Satoshi OUCHIDA ,  Masahiro NAKAJIMA ,  Seiichiro YOSHINAGA

IPC: F04D17/12 ,  F04D29/44

Abstract: A compressor including an impeller housing accommodating a first impeller configured to compress a fluid and a second impeller configured to further compress the fluid, and an interstage component forming, together with the impeller housing, an interstage passage that includes a curved passage. The curved passage is formed by an inner wall surface that is curved, and by an outer wall surface that is curved. A first wall surface selected from the inner wall surface and the outer wall surface is formed by the impeller housing, and a second wall surface selected from the inner wall surface and the outer wall surface is formed by the interstage component. A distance between the inner wall surface and the outer wall surface is constant along an entire length of the curved passage.

公开(公告)号：US20230327506A1

公开(公告)日：2023-10-12

申请号：US18336016

申请日：2023-06-16

Applicant: IHI Corporation

Inventor： Koji YAMAGUCHI ,  Takehiro JIKUMARU ,  Natsuki YONEYAMA ,  Seiichiro YOSHINAGA ,  Yosuke AKAMATSU ,  Tatsuro YAMADA ,  Tomoya KAKUTA ,  Masahiro AKIYAMA

IPC: H02K1/276 ,  H02K1/278

CPC classification number: H02K1/2766 ,  H02K1/278

Abstract: A surface magnet rotor includes a shaft member extending along a rotational axis, and a magnet portion formed around the shaft member and forming opposite magnetic poles arranged along a circumferential direction. A cross-section of the shaft member includes an intermediate line extending from the rotational axis to a center point in the circumferential direction between a d-axis and a q-axis of the magnet portion. In the cross-section, a first cross-sectional area delimited by the d-axis and the intermediate line is different from a second cross-sectional area delimited by the q-axis and the intermediate line.