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US 2021/0262479 A1Published application
Apparatus for compressor
AssigneeLG Electronics Inc.
InventorsHanyoung PARK, Yoonjei HWANG
Life of this patent
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Abstract
A compressor according to an embodiment of the present disclosure vibrates a rotating shaft or changes an operating frequency of a motor, in response to a vibration frequency of a discharge passage falling outside a normal range.
Claims20
A compressor comprising:
- one or more impellers configured to draw in and compress a refrigerant;
- a motor configured to rotate the impellers;
- a rotating shaft, to which the impellers and the motor are coupled;
- a discharge passage, through which the refrigerant compressed by the impellers is discharged;
- a vibration measuring sensor configured to measure a vibration frequency of the discharge passage;
- and
- a controller configured to control an operating frequency of the motor based on the vibration frequency measured by the vibration measuring sensor.
4 more elements
A compressor comprising:
- one or more impellers configured to draw in and compress a refrigerant;
- a motor configured to rotate the impellers;
- a rotating shaft, to which the impellers and the motor are coupled;
- at least two thrust bearings limiting vibration of the rotating shaft in an axial direction;
- a vibration measuring sensor configured to measure a vibration frequency of a discharge passage;
- and
- a controller configured to control the thrust bearings based on the vibration frequency measured by the vibration measuring sensor,
- wherein upon determining that the vibration frequency falls outside a normal vibration frequency range, the controller controls the two thrust bearings to vibrate the rotating shaft in the axial direction a predetermined number of times.
5 more elements
A compressor comprising:
- one or more impellers configured to draw in and compress a refrigerant;
- a motor configured to rotate the impellers;
- a rotating shaft, to which the impellers and the motor are coupled;
- a plurality of magnetic bearings supporting the rotating shaft in a radial direction intersecting the axial direction of the rotating shaft;
- a vibration measuring sensor configured to measure a vibration frequency of a discharge passage;
- and
- a controller configured to control the magnetic bearings based on the vibration frequency measured by the vibration measuring sensor,
- wherein upon determining that the vibration frequency falls outside a normal vibration frequency range, the controller controls the plurality of magnetic bearings to vibrate the rotating shaft in the radial direction a predetermined number of times.
5 more elements
Dependencies are inferred from the claim text.