ROTARY DRIVE DEVICE AND PUMP

WIPO Patent Application WO/2022/004144

A1

Comprised are a rotor (20), a magnetic bearing (10), and a drive unit (30) that rotationally drives the rotor. The magnetic bearing comprises a bearing stator (12) and a ring-shaped bearing rotor member (11). The drive unit has a drive stator (32) and a ring-shaped drive rotor member (31). The bearing stator has a plurality of bearing stator cores (17) made from a magnetic material arranged on the outer peripheral side of the bearing rotor member, forming the bearing rotor member and a magnetic circuit, and a bearing coil (18) wound around the bearing stator core. The bearing stator core has a first part (17a) extending in a first direction orthogonal to the direction facing the bearing rotor member, and a pair of second parts (17b) extending to the bearing rotor member side from both ends of the first direction of the first part. The bearing coil is wound on the first part of the bearing stator core. The drive stator is formed to pass through a position in the first direction between the outer peripheral surface of the rotor and the first part, and between the pair of second parts of the bearing stator core.

JP2002218708	STRUCTURE OF AUXILIARY BEARING FOR HIGH-SPEED MOTOR DRIVE COMPRESSOR
JP3306933	PNEUMATIC MAGNETIC BEARING TYPE MOTOR
JP2023125645	MAGNETIC FLOATING TYPE DYNAMO-ELECTRIC MOTOR AND MAGNETIC FLOATING TYPE PUMP

ONIDUKA TOSHIKI (JP)
KOREEDA SHINICHIROU (JP)
KAMEI TOSHIAKI (JP)
SAITOU HIKARU (JP)
UENO MASAYA (JP)
SEKI TAKUYA (JP)

PCT/JP2021/018171

January 06, 2022

May 13, 2021

Click for automatic bibliography generation  

IWAKI CO LTD (JP)

H02K7/09; F04D29/048; F04D29/058; F16C32/04; F16C39/06; H02K7/14; H02K11/215; H02K11/30

WO2009050767A1

2009-04-23

JP2005121157A

2005-05-12

See also references of EP 4178090A4

KISARAGI ASSOCIATES (JP)

View/Download PDF      PDF Help

Previous Patent: WATER TREATMENT APPARATUS AND PRESSURE REGULATING VALVE

Next Patent: IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, AND PROGRAM