US 12,191,231 B2
Rotary machine with electric motor and impeller
Shun Nakayama, Tokyo (JP); and Yuji Sasaki, Tokyo (JP)
Filed by IHI Corporation, Tokyo (JP)
Filed on Dec. 13, 2022, as Appl. No. 18/064,932.
Application 18/064,932 is a continuation of application No. PCT/JP2021/031399, filed on Aug. 26, 2021.
Claims priority of application No. 2020-148131 (JP), filed on Sep. 3, 2020.
Prior Publication US 2023/0110813 A1, Apr. 13, 2023
Int. Cl. H01L 23/467 (2006.01); F04D 29/58 (2006.01); F04C 18/02 (2006.01)
CPC H01L 23/467 (2013.01) [F04D 29/5813 (2013.01); F04C 18/0207 (2013.01); F05B 2210/12 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A rotary machine comprising:
an electric motor;
an impeller to be rotated by driving the electric motor in order to suck in and compress a gas;
a housing that houses the impeller and includes a suction port for the gas;
heat dissipation fins provided on the housing and disposed to be heat-exchangeable with the gas passing through the suction port; and
an inverter connected to the housing and that controls the electric motor, wherein the inverter is annular and surrounds the suction port.
 
11. A rotary machine comprising:
an electric motor;
an impeller to be rotated by driving the electric motor in order to suck in and compress a gas;
an impeller casing that houses the impeller;
a tubular portion connected to the impeller casing to form a suction port for the gas;
an annular shaped inverter that controls the electric motor; and
a heat dissipation fin that protrudes from an inner circumferential surface of the tubular portion and is disposed in a flow path for the gas,
wherein the inverter is located on an outer circumferential surface of the tubular portion opposite to the heat dissipation fin, so that the inverter surrounds the tubular portion.
 
14. A rotary machine comprising:
an electric motor;
an impeller to be rotated by driving the electric motor;
an impeller casing that houses the impeller and includes an internal flow path;
a suction port fluidly coupled with the internal flow path;
an annular shaped inverter that controls the electric motor and surrounds the suction port; and
a heat dissipation fin located in the suction port to be heat-exchangeable with a gas passing through the internal flow path.