US 11,655,820 B2
Horizontal rotary compressor with enhanced tiltability during operation
Kang P. Lee, Sudbury, MA (US); and Kevin Olsen, Natick, MA (US)
Assigned to ASPEN COMPRESSOR, LLC, Marlborough, MA (US)
Filed by ASPEN COMPRESSOR, LLC, Marlborough, MA (US)
Filed on Feb. 3, 2021, as Appl. No. 17/167,017.
Claims priority of provisional application 62/969,896, filed on Feb. 4, 2020.
Prior Publication US 2021/0239118 A1, Aug. 5, 2021
Int. Cl. F04C 29/02 (2006.01); F04C 23/00 (2006.01)
CPC F04C 29/028 (2013.01) [F04C 23/008 (2013.01); F04C 29/025 (2013.01); F04C 29/026 (2013.01); F04C 2240/30 (2013.01); F04C 2240/809 (2013.01)] 18 Claims
OG exemplary drawing
 
18. A horizontal compressor comprising:
a shell divided into a motor space and a pump space by a separator, wherein the separator has an oil passage at a lower part of the separator and a gas passage in an upper part connecting the motor space and the pump space;
a motor positioned in the motor space;
a pump assembly positioned in the pump space;
a first sump positioned in a lower part of the motor space, wherein the first sump is configured to feed oil into the pump assembly via the oil passage;
a second sump positioned in a lower part of the pump space; and
an oil supply tube attached to the oil passage along a bottom portion of the shell, wherein an end of the oil supply tube is configured to remain submerged in oil at a maximum allowable tilt angle.