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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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2.发明申请公开(公告)号：US20200011561A1
公开(公告)日：2020-01-09
申请号：US16029246
申请日：2018-07-06
Applicant: Johnson Controls Technology Company
Inventor： Robert D. Turney , Liming Yang , Yunrui Wang , Yasutaka Yoshida , Kazumoto Urata , Timothy I. Salsbury , John M. House
Abstract: A variable refrigerant flow (VRF) system for a building includes a plurality of outdoor VRF units configured to heat or cool a refrigerant for use in heating or cooling the building and an extremum-seeking controller. The extremum-seeking controller is configured to determine a total power consumption of the plurality of outdoor VRF units, generate a pressure setpoint for the plurality of outdoor VRF units using an extremum-seeking control technique that drives the total power consumption toward an extremum, and use the pressure setpoint to operate the plurality of outdoor VRF units.
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3.发明申请公开(公告)号：US20200011562A1
公开(公告)日：2020-01-09
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
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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4.发明授权公开(公告)号：US10895393B2
公开(公告)日：2021-01-19
申请号：US16029246
申请日：2018-07-06
Applicant: Johnson Controls Technology Company
Inventor： Robert D. Turney , Liming Yang , Yunrui Wang , Yasutaka Yoshida , Kazumoto Urata , Timothy I. Salsbury , John M. House
Abstract: A variable refrigerant flow (VRF) system for a building includes a plurality of outdoor VRF units configured to heat or cool a refrigerant for use in heating or cooling the building and an extremum-seeking controller. The extremum-seeking controller is configured to determine a total power consumption of the plurality of outdoor VRF units, generate a pressure setpoint for the plurality of outdoor VRF units using an extremum-seeking control technique that drives the total power consumption toward an extremum, and use the pressure setpoint to operate the plurality of outdoor VRF units.
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