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公开(公告)号：US11067956B2
公开(公告)日：2021-07-20
申请号：US16535341
申请日：2019-08-08
Applicant: Johnson Controls Technology Company
Inventor： Ruoyu Chen , Liming Yang , Robert D. Turney
Abstract: A method for controlling a variable refrigerant flow (VRF) system includes applying a time window to sensor data associated with the VRF system, the sensor data including input data points and having a first resolution, wherein applying the time window to the sensor data isolates a subset of the input data points; applying a timing weight to one or more input data points in the subset of the input data points to generate corrected data points having a second resolution higher than the first resolution; creating a virtual sensor and mapping the corrected data points to an output of the virtual sensor; and controlling the VRF system based on an output of the virtual sensor. The use of virtual sensors with a higher resolution than corresponding physical sensors in this manner allows for existing physical sensors to be used while improving performance of the VRF system.
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公开(公告)号：US10684070B2
公开(公告)日：2020-06-16
申请号：US16122399
申请日：2018-09-05
Applicant: Johnson Controls Technology Company
Inventor： Robert D. Turney , Liming Yang
Abstract: A variable refrigerant flow system includes one or more outdoor units and a first indoor unit of a plurality of indoor units configured to receive refrigerant from the one or more outdoor units. The first indoor unit is configured to serve a first building zone. The variable refrigerant flow system also includes a user input device configured to receive a user command requesting heating or cooling of the first building zone by the first indoor unit. The variable refrigerant flow system also includes a controller configured to receive the command from the user input device, receive an indication of a current price of energy, in response to receiving the command generate a constraint on a capacity of the one or more outdoor units based on the current price of energy, and control the one or more outdoor units to operate in accordance with the constraint.
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Patent Agency Ranking
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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14.发明授权公开(公告)号：US10655878B2
公开(公告)日：2020-05-19
申请号：US16029255
申请日：2018-07-06
Applicant: Johnson Controls Technology Company
Inventor： Robert D. Turney , Liming Yang , Yunrui Wang , Yasutaka Yoshida , Kazumoto Urata
IPC: F24F11/46 , F24F11/52 , F24F11/56 , F24F11/64 , F24F11/74 , F24F11/86 , G05B13/02 , F24F11/65 , F24F140/60 , F24F140/50
Abstract: A variable refrigerant flow (VRF) system for a building. The VRF system includes at least one outdoor VRF unit configured to heat or cool a refrigerant for use in heating or cooling the building. The at least one outdoor VRF unit includes a sub-cooler and a bypass expansion valve configured to control a flow of the refrigerant through the sub-cooler and an extremum-seeking controller configured to generate a sub-cooling temperature setpoint for the at least one outdoor VRF unit. The extremum-seeking controller is configured to determine a total power consumption of the at least one outdoor VRF unit, generate a sub-cooling temperature setpoint for the at least one outdoor VRF unit using an extremum-seeking control technique that drives the total power consumption toward an extremum, and use the sub-cooling temperature setpoint to operate the at least one outdoor VRF unit.
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公开(公告)号：US20200072543A1
公开(公告)日：2020-03-05
申请号：US16122399
申请日：2018-09-05
Applicant: Johnson Controls Technology Company
Inventor： Robert D. Turney , Liming Yang
Abstract: A variable refrigerant flow system includes one or more outdoor units and a first indoor unit of a plurality of indoor units configured to receive refrigerant from the one or more outdoor units. The first indoor unit is configured to serve a first building zone. The variable refrigerant flow system also includes a user input device configured to receive a user command requesting heating or cooling of the first building zone by the first indoor unit. The variable refrigerant flow system also includes a controller configured to receive the command from the user input device, receive an indication of a current price of energy, in response to receiving the command generate a constraint on a capacity of the one or more outdoor units based on the current price of energy, and control the one or more outdoor units to operate in accordance with the constraint.
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公开(公告)号：US20190271978A1
公开(公告)日：2019-09-05
申请号：US16418686
申请日：2019-05-21
Applicant: Johnson Controls Technology Company
Inventor： Mohammad N. ElBsat , Michael J. Wenzel , Zhigang Wu , Yasutaka Yoshida , Robert D. Turney , Liming Yang
Abstract: An automatic work order generation system for model predictive maintenance (MPM) of building equipment including an MPM system including an equipment controller to operate the building equipment to affect an environmental condition of a building. The MPM system can perform a predictive optimization to determine a service time at which to service the building equipment. The automatic work order generation system includes an equipment service scheduler that can determine whether any service providers are available to perform equipment service within a predetermined time range of the service time. In response to determining that service providers are available to perform the equipment service, the equipment service scheduler can select a service provider and an appointment time based on one or more service provider attributes. The equipment service scheduler can generate a service work order and transmit the service work order to the service provider to schedule a service appointment.
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公开(公告)号：US09574805B2
公开(公告)日：2017-02-21
申请号：US15026547
申请日：2014-09-24
Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANY
Inventor： Liming Yang , Curtis Christian Crane
CPC classification number: F25B31/006 , F25B31/008 , F25B49/022 , F25B2700/21156 , F25B2700/21157
Abstract: A method and apparatus for controlling temperature of a compressor motor (170) having a motor cooling circuit in a refrigeration system (1014) is provided. The motor cooling circuit includes a second expansion valve (1043) providing fluid communication between the condenser and the compressor motor. The compressor motor (170) is in fluid communication with the refrigeration circuit (1014) between downstream of the first expansion valve (1040) and a compressor inlet. Refrigerant is provided as a cooling fluid to the motor cooling circuit. A primary PID loop (402) and a secondary PID loop (414) are used to control the temperature and the flow of refrigerant to the motor (170).
Abstract translation: 提供一种用于控制在制冷系统（1014）中具有电动机冷却回路的压缩机电动机（170）的温度的方法和装置。 电动机冷却回路包括提供冷凝器和压缩机电动机之间的流体连通的第二膨胀阀（1043）。 压缩机马达170在第一膨胀阀1040的下游与压缩机入口之间与制冷回路1014流体连通。 制冷剂作为冷却流体提供给电动机冷却回路。 主PID回路（402）和副PID回路（414）用于控制制冷剂到电动机（170）的温度和流量。
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