Abstract: An inverter integrated gas supply device includes a fluid machine configured to discharge air, an electric motor having a motor casing and configured to drive the fluid machine, an inverter having an inverter casing and configured to supply a drive current to the electric motor, a motor-side connection part attached to the motor casing and configured to receive the drive current, and an inverter-side connection part attached to the inverter casing, connected to the motor-side connection part. The motor-side connection part includes a motor-side connector housing, and a motor connector. The inverter-side connection part includes an inverter-side connector housing, and an inverter connector. A position of the motor connector relative to the motor-side connector housing is fixed; and a position of the inverter connector relative to the inverter-side connector housing is variable.

Abstract: This fluid machine includes a motor housing, a rotating shaft which is inserted through the motor housing, an impeller which is mounted on a protruding portion of the rotating shaft, and a facing portion which faces the motor housing on a first end side in the axial direction. A first opening is provided on the first end side of the motor housing, a second opening is provided on a second end side of the motor housing, and an in-housing passage fluidly couples the first opening with the second opening. The fluid machine further includes an exhaust passage which is formed between the motor housing and the facing portion and which fluidly couples the first opening with external air, and a rotating blade which is disposed between the first opening and the exhaust passage, wherein the rotating blade is mounted on the rotating shaft and is rotatable with the rotating shaft.

Abstract: An inverter integrated gas supply device includes a fluid machine configured to discharge air, an electric motor having a motor casing and configured to drive the fluid machine, an inverter having an inverter casing and configured to supply a drive current to the electric motor, a motor-side connection part attached to the motor casing and configured to receive the drive current, and an inverter-side connection part attached to the inverter casing, connected to the motor-side connection part. The motor-side connection part includes a motor-side connector housing, and a motor connector. The inverter-side connection part includes an inverter-side connector housing, and an inverter connector. A position of the motor connector relative to the motor-side connector housing is fixed; and a position of the inverter connector relative to the inverter-side connector housing is variable.

Abstract: An inverter integrated gas supply device includes an electric motor and an inverter. The electric motor has a motor-side connection part that is configured to receive a drive current. The inverter has an inverter-side connection part that is connected to the motor-side connection part, and configured to supply the drive current to the motor-side connection part. The motor-side connection part includes a motor-side connector housing fixed to a motor case, a motor connector that is configured to receive the drive current, and a sealing member configured to seal a gap between the motor-side connector housing and the motor connector.

Abstract: This fluid machine includes a motor housing, a rotating shaft which is inserted through the motor housing, an impeller which is mounted on a protruding portion of the rotating shaft, and a facing portion which faces the motor housing on a first end side in the axial direction. A first opening is provided on the first end side of the motor housing, a second opening is provided on a second end side of the motor housing, and an in-housing passage fluidly couples the first opening with the second opening. The fluid machine further includes an exhaust passage which is formed between the motor housing and the facing portion and which fluidly couples the first opening with external air, and a rotating blade which is disposed between the first opening and the exhaust passage, wherein the rotating blade is mounted on the rotating shaft and is rotatable with the rotating shaft.

Abstract: A double-stator switched reluctance motor includes an annular rotor, an outer stator disposed outside the rotor, and an inner stator disposed inside the rotor. Phases of the salient poles in a rotational direction of the rotor are different from each other in at least one of a set of first stator salient poles and second stator salient poles and a set of first rotor salient poles and second rotor salient poles.

Abstract: A double stator switched reluctance rotating machine includes an annular rotor, an outer stator that is disposed outside the rotor, and an inner stator that is disposed inside the rotor; and employs a structure in which the rotor is provided with a bolt fastening hole passing through the rotor in an axial direction and the bolt fastening hole is provided at a position depending on magnetic characteristics of the outer and inner stators.

Abstract: A double-stator switched reluctance motor includes an annular rotor, an outer stator disposed outside the rotor, and an inner stator disposed inside the rotor. Phases of the salient poles in a rotational direction of the rotor are different from each other in at least one of a set of first stator salient poles and second stator salient poles and a set of first rotor salient poles and second rotor salient poles.

Abstract: A double stator switched reluctance rotating machine includes an annular rotor, an outer stator that is disposed outside the rotor, and an inner stator that is disposed inside the rotor; and employs a structure in which the rotor is provided with a bolt fastening hole passing through the rotor in an axial direction and the bolt fastening hole is provided at a position depending on magnetic characteristics of the outer and inner stators.

Abstract: Provided is a magnetic bearing device capable of facilitating manufacture of the magnetic bearing device and improving precision in production thereof while maintaining eddy current reducing effects. The magnetic bearing device 10 supporting a rotating shaft 3 with a magnetic force includes a plurality of magnetic poles 5 arranged in the circumferential direction of the rotating shaft 3. Each magnetic pole 5 includes an inner end surface 5b facing the outer surface of the rotating shaft in proximity thereto. The magnetic poles which are adjacent to each other in the circumferential direction respectively extend in the axial directions of the magnetic poles 5 to the inner end surfaces 5b of the magnetic poles so as to virtually interfere with each other in the vicinity of the outer surface of the rotating shaft. The virtual interfering portions 5a of both the magnetic poles 5 capable of interfering with each other are removed by cutting.

Abstract: An electromagnetic attraction type magnetic bearing includes at least a pair of electromagnets (1, 2) arranged to face each other, a float (3) arranged between the electromagnets and held at the middle position thereof, a sensor (4) for detecting the displacement of the float (3) from a balance position, and/or the speed thereof, and a controller (5) for controlling the electromagnets (1, 2). The controller (5) determines a variable Z proportional to acceleration in the control direction from the displacement and speed of the float (3), and operates to set the control current of one of the electromagnets to zero and to control only the control current of the other of the electromagnets, depending on the positive and negative values of the variable.

Abstract: Provided is a magnetic bearing device capable of facilitating manufacture of the magnetic bearing device and improving precision in production thereof while maintaining eddy current reducing effects. The magnetic bearing device 10 supporting a rotating shaft 3 with a magnetic force includes a plurality of magnetic poles 5 arranged in the circumferential direction of the rotating shaft 3. Each magnetic pole 5 includes an inner end surface 5b facing the outer surface of the rotating shaft in proximity thereto. The magnetic poles which are adjacent to each other in the circumferential direction respectively extend in the axial directions of the magnetic poles 5 to the inner end surfaces 5b of the magnetic poles so as to virtually interfere with each other in the vicinity of the outer surface of the rotating shaft. The virtual interfering portions 5a of both the magnetic poles 5 capable of interfering with each other are removed by cutting.

Abstract: An electromagnetic attraction type magnetic bearing includes at least a pair of electromagnets (1, 2) arranged to face each other, a float (3) arranged between the electromagnets and held at the middle position thereof, a sensor (4) for detecting the displacement of the float (3) from a balance position, and/or the speed thereof, and a controller (5) for controlling the electromagnets (1, 2). The controller (5) determines a variable Z proportional to acceleration in the control direction from the displacement and speed of the float (3), and operates to set the control current of one of the electromagnets to zero and to control only the control current of the other of the electromagnets, depending on the positive and negative values of the variable.

Abstract: A magnetic bearing device has a rotating shaft (3) and a bearing structure (5) for supporting the rotating shaft by a magnetic force. The bearing structure (5) has magnetic pole portions (7) facing an outer circumferential surface of the rotating shaft (3) and surrounding the rotating shaft (3), and supports the rotating shaft (3) in a non-contact manner by a magnetic force generated between the magnetic pole portions (7) and the rotating shaft (3). A depression (9) is formed in the surface of the rotating shaft. At least one of a shape, a position, and the number of the depressions (9) is set so as to suppress an eddy current on the surface of the rotating shaft (3) that is generated by rotation of the rotating shaft (3) and by a magnetic field caused by the magnetic pole portions (7).

Abstract: Stator cores for a homo-polar magnetic bearing, wherein toothed ends of stator cores around a rotor form N poles and S poles adjacent in the axial direction, and the method of manufacturing them. The stator core 10 is provided with protrusions 11 of adjacent N and S poles extended circumferentially so as to be in contact with or in close proximity to each other, and is composed of U-shaped laminated steel sheets interleaved with an insulating material, of which the center side is open when viewed from the centerline side. In addition, the core is composed of a first yoke, a second yoke and a stem unit that is a magnetic body placed and fixed between the yokes, and at least the stem unit is composed of a magnetic material powder, solidified in resin.

Abstract: Stator cores for a homo-polar magnetic bearing, wherein toothed ends of stator cores around a rotor form N poles and S poles adjacent in the axial direction, and the method of manufacturing them. The stator core 10 is provided with protrusions 11 of adjacent N and S poles extended circumferentially so as to be in contact with or in close proximity to each other, and is composed of U-shaped laminated steel sheets interleaved with an insulating material, of which the center side is open when viewed from the centerline side. In addition, the core is composed of a first yoke, a second yoke and a stem unit that is a magnetic body placed and fixed between the yokes, and at least the stem unit is composed of a magnetic material powder, solidified in resin.

Abstract: Stator cores for a homo-polar magnetic bearing, wherein toothed ends of stator cores around a rotor form N poles and S poles adjacent in the axial direction, and the method of manufacturing them. The stator core 10 is provided with protrusions 11 of adjacent N and S poles extended circumferentially so as to be in contact with or in close proximity to each other, and is composed of U-shaped laminated steel sheets interleaved with an insulating material, of which the center side is open when viewed from the centerline side. In addition, the core is composed of a first yoke, a second yoke and a stem unit that is a magnetic body placed and fixed between the yokes, and at least the stem unit is composed of a magnetic material powder, solidified in resin.

Abstract: Stator cores for a homo-polar magnetic bearing, wherein toothed ends of stator cores around a rotor form N poles and S poles adjacent in the axial direction, and the method of manufacturing them. The stator core 10 is provided with protrusions 11 of adjacent N and S poles extended circumferentially so as to be in contact with or in close proximity to each other, and is composed of U-shaped laminated steel sheets interleaved with an insulating material, of which the center side is open when viewed from the centerline side. In addition, the core is composed of a first yoke, a second yoke and a stem unit that is a magnetic body placed and fixed between the yokes, and at least the stem unit is composed of a magnetic material powder, solidified in resin.