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公开(公告)号：US10564615B2
公开(公告)日：2020-02-18
申请号：US15424593
申请日：2017-02-03
Applicant: Johnson Controls Technology Company
Inventor： Christopher R. Amundson , David A. Kondrad , Kraig D. Ritmanich , Aron M. Seiler , Jameel Ahmed , Curtis C. Crane , Vivek V. Gupta , Daniel F. Leising , Brandon A. Sloat , Lisa E. Strand
Abstract: An equipment controller in a building management system (BMS) includes a feature detector and a dynamic point list generator. The feature detector is configured to receive sensor input from a sensor and determine a set of features available to the equipment controller based on the sensor input. The dynamic point list generator is configured to determine unavailable features based on the set of available features and identify one or more points in a complete point list associated with the set of unavailable features. The dynamic point list generator is configured to generate a dynamic point list by removing the identified points from the complete point list and expose the dynamic point list to a BMS controller communicably connected to the equipment controller.
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公开(公告)号：US20190186801A1
公开(公告)日：2019-06-20
申请号：US16326895
申请日：2017-08-22
Applicant: Johnson Controls Technology Company
Inventor： William L. Kopko , Stephen M. Zardus , Israel Federman , Curtis C. Crane , Todd Kwao-vovo
CPC classification number: F25B49/027 , F25B23/006 , F25B25/005 , F25B2400/0403 , F25B2600/111 , F25B2600/13 , F25B2600/2501 , F25B2600/2515 , Y02B30/745
Abstract: A refrigeration system includes a heat exchanger configured to place a cooling fluid in a heat exchange relationship with a working fluid, a free-cooling circuit having a pump configured to circulate the working fluid through the heat exchanger and a condenser, a flow control valve configured to control a flow rate of the working fluid to the condenser, a condenser bypass valve configured to control a flow rate of the working fluid that bypasses the condenser, and a controller configured to adjust a position of the flow control valve, a position of the condenser bypass valve, a speed of a fan of the condenser, a speed of the pump, and a temperature of a heater based on an ambient temperature, a temperature of the working fluid leaving the condenser, the position of the flow control valve, the position of the condenser bypass valve, or a combination thereof.
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公开(公告)号：US11466912B2
公开(公告)日：2022-10-11
申请号：US16652587
申请日：2018-10-04
Applicant: Johnson Controls Technology Company
Inventor： David Andrew Bradshaw , Andrew Michael Welch , Curtis C. Crane , Calvin Andrew Nelson
Abstract: Embodiments of the present disclosure are directed toward purge units of vapor compression systems, and methods of control thereof, that selectively activate and deactivate the purge unit in response to one or more conditions to, for example, control refrigerant-to-air ratios while still minimizing the durations of the purge cycles. For example, in certain embodiments, these conditions may include conditions within the chiller condenser, time since last purge activation, time since last venting of non-condensables, and combinations thereof. By reducing an amount of time that the purge unit would be active without removing a substantial amount non-condensables from the vapor compression system, present embodiments reduce the power consumption of the purge unit, as well as the vapor compression system as a whole, while still being responsive to prevent or mitigate a loss of efficiency due to a substantial accumulation of non-condensables in the condenser of the vapor compression system.
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公开(公告)号：US11359847B2
公开(公告)日：2022-06-14
申请号：US16326895
申请日：2017-08-22
Applicant: Johnson Controls Technology Company
Inventor： William L. Kopko , Stephen M. Zardus , Israel Federman , Curtis C. Crane , Todd Kwao-vovo
Abstract: A refrigeration system includes a heat exchanger configured to place a cooling fluid in a heat exchange relationship with a working fluid, a free-cooling circuit having a pump configured to circulate the working fluid through the heat exchanger and a condenser, a flow control valve configured to control a flow rate of the working fluid to the condenser, a condenser bypass valve configured to control a flow rate of the working fluid that bypasses the condenser, and a controller configured to adjust a position of the flow control valve, a position of the condenser bypass valve, a speed of a fan of the condenser, a speed of the pump, and a temperature of a heater based on an ambient temperature, a temperature of the working fluid leaving the condenser, the position of the flow control valve, the position of the condenser bypass valve, or a combination thereof.
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公开(公告)号：US20210270510A1
公开(公告)日：2021-09-02
申请号：US16805365
申请日：2020-02-28
Applicant: Johnson Controls Technology Company
Inventor： Liming Yang , Thomas M. Seneczko , Curtis C. Crane , Justin P. Kauffman
Abstract: A method of operating a chiller to avoid future surge events, the method comprises applying chiller operating data associated with a chiller as an input to one or more machine learning models; and generating a threshold for a controllable chiller variable to prevent a future chiller surge event from occurring based on an output of the one or more machine learning models, further comprising affecting operation of the chiller based on the threshold to prevent the future chiller surge event from occurring. The method enables automatic control of a chiller to avoid future chiller surge events.
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Patent Agency Ranking
公开(公告)号：US20200240690A1
公开(公告)日：2020-07-30
申请号：US16652587
申请日：2018-10-04
Applicant: Johnson Controls Technology Company
Inventor： David Andrew Bradshaw , Andrew Michael Welch , Curtis C. Crane , Calvin Andrew Nelson
Abstract: Embodiments of the present disclosure are directed toward purge units of vapor compression systems, and methods of control thereof, that improve efficiency by selectively activating and deactivating the purge unit in response to one or more conditions to, for example, enable refrigerant-to-air ratios within the purge unit within certain industry standards while still minimizing the durations of the purge cycles. For example, in certain embodiments, these conditions may include conditions within the chiller condenser, time since last purge activation, time since last venting of non-condensables, and combinations thereof. By reducing an amount of time that the purge unit would be active without removing a substantial amount non-condensables from the vapor compression system, present embodiments reduce the power consumption of the purge unit, as well as the vapor compression system as a whole, while still being responsive to prevent or mitigate a loss of efficiency due to a substantial accumulation of non-condensables in the condenser of the vapor compression system.
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公开(公告)号：US11635238B2
公开(公告)日：2023-04-25
申请号：US16652581
申请日：2018-10-04
Applicant: Johnson Controls Technology Company
Inventor： David Andrew Bradshaw , Andrew Michael Welch , Curtis C. Crane , Calvin Andrew Nelson
Abstract: Embodiments of the present disclosure are directed toward purge units of vapor compression systems, and methods of control thereof, that improve efficiency by selectively activating and deactivating the purge unit in response to one or more conditions to, for example, enable refrigerant-to-air ratios within the purge unit within certain industry standards while still minimizing the durations of the purge cycles. For example, in certain embodiments, these conditions may include conditions within the chiller condenser, time since last purge activation, time since last venting of non-condensables, and combinations thereof. By reducing an amount of time that the purge unit would be active without removing a substantial amount non-condensables from the vapor compression system, present embodiments reduce the power consumption of the purge unit, as well as the vapor compression system as a whole.
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公开(公告)号：US11162726B2
公开(公告)日：2021-11-02
申请号：US16088790
申请日：2017-03-29
Applicant: Johnson Controls Technology Company
Inventor： Brian Thomas Gallus , Curtis C. Crane , Justin P. Kauffman
Abstract: The present disclosure relates to a sensor disposed in a conduit on a suction side of a compressor, wherein the conduit is configured to convey a fluid and a controller communicatively coupled to the sensor. The controller includes a processor and a memory, the memory is configured to store instructions to be performed by the processor, and the controller is configured to receive one or more indications from the sensor of an amount of power consumed by an active sensor component, determine a presence of liquid in the fluid based at least on the one or more indications, and control a device based on the presence of liquid in the fluid.
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公开(公告)号：US20190249666A1
公开(公告)日：2019-08-15
申请号：US16312929
申请日：2017-06-01
Applicant: Johnson Controls Technology Company
Inventor： Gail E. Lindberg , Curtis C. Crane
CPC classification number: F04C28/12 , F04C18/16 , F04C2210/22 , F04C2270/015 , F04C2270/195 , F04C2270/585
Abstract: A compressor system includes a screw compressor (48) and a controller (100). The screw compressor includes a slide valve (49) selectively actuatable between a first position and a second position to facilitate modulating a capacity of the screw compressor between fully-loaded and fully-unloaded. The controller is communicably coupled to the slide valve. The controller is configured to receive a chilled fluid temperature setpoint for a fluid in heat transfer communication with a refrigerant of the refrigeration circuit; receive temperature data indicative of a chilled fluid temperature of the fluid; determine a difference between the chilled fluid temperature and the chilled fluid temperature setpoint; and provide one of a load command and an unload command to the slide valve based the difference between the chilled fluid temperature and the chilled fluid temperature setpoint. According to an example embodiment, the controller (100) does not receive feedback from the screw compressor (48) regarding a position of the slide valve (49).
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公开(公告)号：US11732942B2
公开(公告)日：2023-08-22
申请号：US16805365
申请日：2020-02-28
Applicant: Johnson Controls Technology Company
Inventor： Liming Yang , Thomas M. Seneczko , Curtis C. Crane , Justin P. Kauffman
CPC classification number: F25B49/022 , F04D27/0246 , F04D27/0261 , F04D27/0284 , F24F11/64 , F05B2270/404 , F05B2270/709 , F25B2500/06 , F25B2500/12 , F25B2600/0253
Abstract: A method of operating a chiller includes applying chiller operating data associated with the chiller as an input to one or more machine learning models, generating a boundary for a controllable chiller variable based on an output of the one or more machine learning models, and affecting operation of the chiller based on the boundary.
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