公开(公告)号：US20200224929A1

公开(公告)日：2020-07-16

申请号：US16650229

申请日：2018-09-21

Applicant: Johnson Controls Technology Company

Inventor： Bryson I. Sheaffer ,  Paul W. Snell

IPC: F25B1/00 ,  F25B13/00

Abstract: An eductor system for a chiller assembly is provided. The system includes a first and a second eductor. The first eductor includes a first suction inlet that receives a first oil and refrigerant mixture from a plenum of a compressor, a first motive inlet that receives a first motive fluid from an oil sump, and a first outlet that discharges a first outlet mixture to the oil sump. The first outlet mixture includes both the first oil and refrigerant mixture and the first motive fluid. The second eductor includes a second suction inlet that receives a second oil and refrigerant mixture from an evaporator, a second motive inlet that receives a second motive fluid from a condenser, and a second outlet that discharges a second outlet mixture to the plenum of the compressor. The second outlet mixture includes both the second oil and refrigerant mixture and the second motive fluid.

公开(公告)号：US20200208678A1

公开(公告)日：2020-07-02

申请号：US16612584

申请日：2018-07-10

Applicant: Johnson Controls Technology Company

Inventor： Paul W. Snell

IPC: F16C32/04 ,  F16C33/58 ,  F16C33/60 ,  F16C35/04

Abstract: A self-centering bearing assembly is provided. The bearing assembly includes a magnetic bearing device configured to support a rotating shaft and a magnetic bearing support housing. The magnetic bearing housing has a disc-like shape and multiple tabs extending from an outer diameter portion in an axial direction. The bearing assembly further includes an auxiliary bearing device configured to support the rotating shaft during an auxiliary bearing condition, and an auxiliary bearing support housing. The auxiliary bearing support housing has a disc-like shape with a first diameter portion and a second diameter portion. The first diameter portion has a larger diameter than the second diameter portion. The tabs are configured to couple to the second diameter portion such that the auxiliary bearing support housing is concentric to the magnetic bearing support housing.

公开(公告)号：US20190074749A1

公开(公告)日：2019-03-07

申请号：US16182410

申请日：2018-11-06

Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANY

Inventor： Paul W. Snell ,  Ian Casper ,  Jeb W. Schreiber ,  Daniela Bilmanis ,  Ajit Kane

IPC: H02K7/09 ,  F04D17/10 ,  F04D25/02 ,  F25B31/02 ,  H02K5/124 ,  H02K5/20 ,  H02K7/14 ,  H02K9/19 ,  H02K17/16 ,  F16C32/04

Abstract: A sealed induction motor for a chiller assembly is provided. The induction motor includes a stator, a rotor, and a shaft with a first end and a second end. The rotor and the shaft are configured to rotate relative to the stator. The induction motor further includes a first magnetic bearing assembly located proximate the first end of the shaft and a second magnetic bearing assembly located proximate the second end of the shaft. The first and the second magnetic bearing assemblies are configured to support the shaft. The shaft is coupled to a centrifugal compressor using a direct drive connection.