Title:
MAGNETIC BEARING ASSEMBLY AND CONTROL METHOD AND DEVICE THEREFOR, COMPRESSOR AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2023/131103
Kind Code:
A1
Abstract:
A magnetic bearing assembly and a control method and control device therefor, a compressor and an air conditioner. The magnetic bearing assembly comprises: a rotary shaft (110), a peripheral side surface of the rotary shaft being provided with a groove (112); and a distance sensor, which is arranged on a peripheral side of the rotary shaft, is configured to be opposite an annular surface of the rotary shaft that is provided with the groove, and is located on a first circle, the distance sensor comprising: N first sensors (120), and N second sensors (130), the first sensors and the second sensors being alternately arranged on the first circle, wherein N is an integer greater than 1, the center of the first circle is located on the axis of the rotary shaft, and a plane where the first circle is located is perpendicular to the axis of the rotary shaft. By means of a distance sensor array, the influence of radial fluctuation of the rotary shaft on rotation speed measurement of the rotary shaft can be eliminated, thereby solving the technical problems in the prior art of an incorrect pulse signal being output, the rotation speed measurement precision being low, and the working reliability of the rotary shaft being poor.
Inventors:
YANG BIN (CN)
HU SHANDE (CN)
YUE BAO (CN)
LIU SHUQING (CN)
LI TIAN (CN)
HE WEIHENG (CN)
JIN KEKE (CN)
HU SHANDE (CN)
YUE BAO (CN)
LIU SHUQING (CN)
LI TIAN (CN)
HE WEIHENG (CN)
JIN KEKE (CN)
Application Number:
PCT/CN2023/070033
Publication Date:
July 13, 2023
Filing Date:
January 03, 2023
Export Citation:
Assignee:
GD MIDEA HEATING & VENTILATING EQUIPMENT CO LTD (CN)
MIDEA GROUP CO LTD (CN)
MIDEA GROUP CO LTD (CN)
International Classes:
F16C32/04
Foreign References:
| CN114427571A | 2022-05-03 | |||
| US20130328455A1 | 2013-12-12 | |||
| CN110469583A | 2019-11-19 | |||
| CN106606377A | 2017-05-03 | |||
| CN113719539A | 2021-11-30 | |||
| US20070256507A1 | 2007-11-08 | |||
| US20150054389A1 | 2015-02-26 | |||
| US20190219377A1 | 2019-07-18 |
Attorney, Agent or Firm:
YOULINK INTELLECTUAL PROPERTY LAW FIRM (CN)
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