US 12,215,687 B2
Scroll compressor and method for controlling scroll compressor
Patrice Bonnefoi, Nordborg (DK); Wanzhen Liu, Nordborg (DK); David Genevois, Cailloux sur Fontaine (FR); and Jean Francois Heitz, Nordborg (DK)
Assigned to DANFOSS COMMERCIAL COMPRESSORS, Reyrieux (FR)
Appl. No. 18/573,467
Filed by Danfoss Commercial Compressors, Trevoux (FR)
PCT Filed Jun. 20, 2022, PCT No. PCT/CN2022/099879
§ 371(c)(1), (2) Date Dec. 22, 2023,
PCT Pub. No. WO2022/268031, PCT Pub. Date Dec. 29, 2022.
Claims priority of application No. 202110715924.X (CN), filed on Jun. 25, 2021.
Prior Publication US 2024/0287988 A1, Aug. 29, 2024
Int. Cl. F04C 18/02 (2006.01); F04C 23/00 (2006.01); F04C 23/02 (2006.01); F04C 28/28 (2006.01); F04C 29/02 (2006.01); F04C 29/04 (2006.01)
CPC F04C 18/0215 (2013.01) [F04C 23/008 (2013.01); F04C 23/02 (2013.01); F04C 28/28 (2013.01); F04C 29/02 (2013.01); F04C 29/04 (2013.01); F04C 2240/40 (2013.01); F04C 2240/81 (2013.01); F04C 2270/195 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A scroll compressor, comprising:
a sealed housing, the sealed housing being provided with a suction opening, and the suction opening being configured to supply refrigerant to be compressed by the scroll compressor;
a compression unit, the compression unit being arranged in the sealed housing and being configured to compress refrigerant supplied by the suction opening, and the compression unit comprising a fixed scroll and an orbiting scroll;
a drive shaft, the drive shaft being arranged in the sealed housing and being configured to drive the orbiting scroll of the compression unit to move orbitally, and the drive shaft being capable of rotating around an axis of rotation;
a synchronous reluctance motor, the synchronous reluctance motor being arranged in the sealed housing and being configured to drive the drive shaft to rotate around the axis of rotation, the synchronous reluctance motor comprising a rotor, coupled to the drive shaft, and a stator disposed around the rotor, and the rotor comprising a ferrite permanent magnet;
a compressor control apparatus, the compressor control apparatus being configured to control the operation of the scroll compressor;
a lubricating oil tank, the lubricating oil tank being formed in a bottom portion of the sealed housing;
a heating apparatus, the heating apparatus being configured to heat lubricating oil stored in the lubricating oil tank; and
an oil temperature sensor, the oil temperature sensor being arranged in the lubricating oil tank;
wherein the compressor control apparatus is configured to collect a lubricating oil temperature measured by the oil temperature sensor, and to prevent the synchronous reluctance motor from starting, if the lubricating oil temperature measured by the oil temperature sensor is less than a first predetermined temperature value; and
wherein the compressor control apparatus is configured to apply a limited motor current to the synchronous reluctance motor if the lubricating oil temperature measured by the oil temperature sensor is between the first predetermined temperature value and a second predetermined temperature value greater than the first predetermined temperature value.