US 12,241,474 B2
Refrigerant compressor with wear sleeve and lubricant blends for handling debris-laden fluids
Michael T. Siegersma, West Salem, WI (US); Daniel A. Strange, La Crosse, WI (US); Russell T. Abbott, Caledonia, MN (US); Todd W. Smith, Onalaska, WI (US); Elyse M. Sorenson, Stoddard, WI (US); Morgan Elizabeth Herried Leehey, La Crosse, WI (US); Curtis E. Everson, La Crosse, WI (US); and Mohammad Akram, Rosemount, MN (US)
Assigned to TRANE INTERNATIONAL INC., Davidson, NC (US)
Filed by TRANE INTERNATIONAL INC., Davidson, NC (US)
Filed on May 31, 2023, as Appl. No. 18/326,731.
Application 18/326,731 is a continuation in part of application No. 17/804,786, filed on May 31, 2022, granted, now 12,044,449.
Prior Publication US 2023/0383760 A1, Nov. 30, 2023
Int. Cl. F04D 29/063 (2006.01); F04D 17/10 (2006.01); F04D 29/62 (2006.01); F25B 31/00 (2006.01); F25B 31/02 (2006.01)
CPC F04D 29/063 (2013.01) [F04D 17/10 (2013.01); F04D 29/624 (2013.01); F25B 31/002 (2013.01); F25B 31/026 (2013.01); F25B 2500/06 (2013.01); F25B 2500/16 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A compressor, comprising:
a housing;
a shaft configured to be rotated relative to the housing to compress a refrigerant, wherein the refrigerant is a low global warming potential refrigerant;
a motor configured to drive the shaft;
a lubrication system configured to supply lubricant to the compressor; and
a bearing configured to support the shaft,
wherein the shaft comprises a wear-resistant sleeve-like treatment on at least a portion of an outer surface of the shaft adjacent the bearing, and
wherein the lubricant is polyol ester (POE) and includes additives, wherein the additives include one or more of anti-wear additives, corrosion inhibitor additives, antioxidant additives, or acid catching additives.