US 12,006,982 B2
Active bearing temperature control
Paul W. Snell, York, PA (US)
Assigned to TYCO FIRE & SECURITY GMBH, Neuhausen am Rheinfall (CH)
Appl. No. 17/264,659
Filed by Johnson Controls Technology Company, Auburn Hills, MI (US)
PCT Filed Jul. 29, 2019, PCT No. PCT/US2019/043921
§ 371(c)(1), (2) Date Jan. 29, 2021,
PCT Pub. No. WO2020/028255, PCT Pub. Date Feb. 6, 2020.
Claims priority of provisional application 62/712,292, filed on Jul. 31, 2018.
Prior Publication US 2021/0332854 A1, Oct. 28, 2021
Int. Cl. F16N 7/08 (2006.01); F04D 25/06 (2006.01); F16C 19/52 (2006.01); F16C 37/00 (2006.01); F16N 7/40 (2006.01); F16N 29/02 (2006.01); G01K 3/08 (2006.01); G01K 13/02 (2021.01); G05D 23/00 (2006.01); H02K 7/08 (2006.01); H02K 9/19 (2006.01); H02K 11/25 (2016.01)
CPC F16C 37/007 (2013.01) [F04D 25/0626 (2013.01); F16C 19/525 (2013.01); F16N 7/08 (2013.01); F16N 7/40 (2013.01); F16N 29/02 (2013.01); G01K 3/08 (2013.01); G01K 13/02 (2013.01); G05D 23/00 (2013.01); H02K 7/08 (2013.01); H02K 9/19 (2013.01); H02K 11/25 (2016.01); F16C 2233/00 (2013.01); F16C 2380/26 (2013.01); F16N 2200/10 (2013.01); F16N 2210/14 (2013.01); F16N 2210/18 (2013.01); F16N 2230/02 (2013.01); F16N 2250/08 (2013.01); G01K 2205/00 (2013.01); H02K 2205/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A motor assembly, comprising:
a shaft configured to couple to a compressor of a heating, ventilation, and air conditioning (HVAC) system;
a bearing defining a bearing interface against which the shaft rotates;
at least one fluid channel fluidly coupled with the bearing interface;
a temperature sensor that detects a temperature of the bearing;
a lubricant supply pump fluidly coupled with the at least one fluid channel to transport lubricant from a lubricant supply to the bearing interface via the at least one fluid channel; and
a controller that receives the temperature of the bearing from the temperature sensor, determines a difference between the temperature of the bearing and a supply temperature of the lubricant, determines a lubricant flow rate based on the difference, and transmits a control signal to the lubricant supply pump to cause the lubricant supply pump to transport the lubricant to the bearing interface at the lubricant flow rate.