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    BACK TO BACK BEARING SEALING SYSTEMS
    1.
    发明申请
    BACK TO BACK BEARING SEALING SYSTEMS 审中-公开

    公开(公告)号：US20200224771A1

    公开(公告)日：2020-07-16

    申请号：US16491469

    申请日：2018-03-08

    Applicant: Johnson Controls Technology Company

    Inventor： Paul W. Snell

    IPC: F16J15/447 ,  F16J15/16

    Abstract: Embodiments of the present disclosure are directed toward a sealing system for a motor that includes a first sealing element configured to be circumferentially disposed around a rotor shaft of the motor. The sealing system also includes a second sealing element configured to be circumferentially disposed around the rotor shaft. A sealing tip of the first sealing element is configured to lift from a surface of the rotor shaft in response to a pressurized fluid directed between the first sealing element and the second sealing element. Additionally, the first sealing element and the second sealing element are configured to radially float around the rotor shaft.

    PRESSURE DAM BEARING
    2.
    发明申请
    PRESSURE DAM BEARING 审中-公开

    公开(公告)号：US20200096242A1

    公开(公告)日：2020-03-26

    申请号：US16495772

    申请日：2018-03-23

    Applicant: Johnson Controls Technology Company

    Inventor： Matthew L. Heisey ,  Paul W. Snell

    IPC: F25B31/02 ,  F04D29/057 ,  F04D25/06 ,  F04D17/10 ,  F04D29/063 ,  H02K5/167 ,  H02K7/08 ,  H02K7/14 ,  F16C33/66

    Abstract: A motor is configured to drive a centrifugal compressor. The motor includes a stator, a rotor, and a shaft. The shaft is supported by a pressure dam bearing (230,240). The pressure dam bearing is lubricated with a lubricant. The lubricant creates a lubricant wedge within the pressure dam bearing that exert an upward force on the shaft. The upward force causes an amount of vibration within the motor. The pressure dam bearing includes a pressure dam (232,242) configured to hold a portion of the lubricant and exert a downward force on the shaft. The downward force balances the upward force and reduces the amount of vibration within the motor, thus achieving greater hydrodynamic stabilization.

    Two step oil motive eductor system
    3.
    发明授权
    Two step oil motive eductor system 有权

    公开(公告)号：US11435116B2

    公开(公告)日：2022-09-06

    申请号：US16650229

    申请日：2018-09-21

    Applicant: Johnson Controls Technology Company

    Inventor： Bryson L. Sheaffer ,  Paul W. Snell

    IPC: F25B31/00 ,  F25B1/00 ,  F25B13/00 ,  F25B41/00 ,  F25B49/02

    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.

    CHILLER MOTOR WITH COOLING FLOW PATH
    5.
    发明申请
    CHILLER MOTOR WITH COOLING FLOW PATH 审中-公开

    公开(公告)号：US20200018527A1

    公开(公告)日：2020-01-16

    申请号：US16495776

    申请日：2018-03-23

    Applicant: Johnson Controls Technology Company

    Inventor： Matthew L. Heisey ,  Paul W. Snell

    IPC: F25B31/00 ,  F25B31/02

    Abstract: A cooling system for a motor to power a compressor in a vapor compression system is provided. The cooling system includes a housing with a cavity enclosing the motor and defining a central axis and fluid directing features extending into the cavity and oriented parallel to the central axis. The cooling system further includes a fluid circuit configured to circulate a cooling fluid between the housing and the motor. The fluid circuit includes a first cooling fluid path defined by directing features that cause a first portion of cooling fluid to travel around a first portion of the motor and a second cooling fluid path defined by fluid directing features that cause a second portion of cooling fluid to travel around a second portion of the motor. The second portion of the motor is located opposite the first portion.

    VARIABLE GEOMETRY DIFFUSER RING
    6.
    发明申请
    VARIABLE GEOMETRY DIFFUSER RING 审中-公开

    公开(公告)号：US20200018326A1

    公开(公告)日：2020-01-16

    申请号：US16491501

    申请日：2018-03-08

    Applicant: Johnson Controls Technology Company

    Inventor： Paul W. Snell

    IPC: F04D29/46

    Abstract: A compressor includes an impeller, a diffuser passage having a diffuser vane therein, and a variable geometry diffuser ring positioned between the impeller and the diffuser vane with respect to a flow of a refrigerant through the compressor. The compressor also includes an actuator configured to move the variable geometry diffuser ring in a direction transverse to the flow of the refrigerant, and between a plurality of ring positions including a fully retracted ring position in which the variable geometry diffuser ring does not block the flow of the refrigerant, and at least one protruded ring position in which the variable geometry diffuser ring adjusts an angle of the flow of the refrigerant upstream of the diffuser vane.

    ACTIVE BEARING TEMPERATURE CONTROL
    8.
    发明申请
    ACTIVE BEARING TEMPERATURE CONTROL 有权

    公开(公告)号：US20210332854A1

    公开(公告)日：2021-10-28

    申请号：US17264659

    申请日：2019-07-29

    Applicant: Johnson Controls Technology Company

    Inventor： Paul W. Snell

    IPC: F16C37/00 ,  F16C19/52

    Abstract: A motor assembly includes a shaft, a bearing, at least one fluid channel, a temperature sensor, a lubricant supply pump, and a controller. The bearing defines a bearing interface against which the shaft rotates. The at least one fluid channel is fluidly coupled with the bearing interface. The temperature sensor detects a temperature of the bearing. The lubricant supply pump is 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. The controller receives the bearing temperature from the temperature sensor, determines a difference between the bearing temperature 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.

    COMPACT VARIABLE GEOMETRY DIFFUSER MECHANISM
    9.
    发明申请
    COMPACT VARIABLE GEOMETRY DIFFUSER MECHANISM 审中-公开

    公开(公告)号：US20200309142A1

    公开(公告)日：2020-10-01

    申请号：US16650277

    申请日：2018-09-21

    Applicant: Johnson Controls Technology Company

    Inventor： Jordan Q. Steiner ,  Paul W. Snell

    IPC: F04D27/02 ,  F04D29/46

    Abstract: A diffuser system for a centrifugal compressor is provided. The diffuser system includes a nozzle base plate (206) that defines a diffuser gap (212), support blocks (216, 246), and a drive ring (220) rotatable relative to the support blocks. The drive ring includes cam tracks (224, 242) and bearing assemblies (226, 234) positioned proximate an outer circumference of the drive ring. The diffuser system further includes drive pins (214) extending through the support blocks and the nozzle base plate. The first end of each drive pin includes a cam follower (218) mounted into a cam track on the drive ring. The second end of each drive pin is coupled to a diffuser ring (208). Rotation of the drive ring causes axial movement of the drive pins by movement of the cam followers in the cam tracks. This results in movement of the diffuser ring to control fluid flow through the diffuser gap.

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