公开(公告)号：US11480373B2

公开(公告)日：2022-10-25

申请号：US16459432

申请日：2019-07-01

Applicant: Johnson Controls Technology Company

Inventor： Curtis Christian Crane ,  Mark Bodell, II ,  Curtis G. Rager ,  John C. Hansen ,  Dean K. Norbeck

IPC: F25B49/02 ,  H02P29/024 ,  H02P23/00

Abstract: A chiller system includes a compressor, a condenser and an evaporator in fluid communication. A motor drives the compressor. A variable speed drive powers the motor. An oil heater and pump system circulate heated lubricating oil in the compressor. A control panel is arranged to determine whether an input parameter is greater than or equal to a threshold parameter; deactivate the VSD in response to sensing that the input parameter is less than the threshold parameter; determine at least one chiller capacity control parameter at a point when the VSD is deactivated, and maintain the at least one chiller capacity control parameter while the VSD is deactivated; determine that the input parameter has been restored; determine a motor rotation and motor rotational speed; and in response to determining that the input parameter is restored and the motor is rotating in a forward direction, reactivate the VSD.

公开(公告)号：US11480360B2

公开(公告)日：2022-10-25

申请号：US16906562

申请日：2020-06-19

Applicant: Johnson Controls Technology Company

Inventor： Michael J. Risbeck ,  Michael J. Wenzel ,  Mohammad N. Elbsat

IPC: G05B19/042 ,  F24F11/64

Abstract: A controller for HVAC equipment stores a cascaded model that includes a disturbance model configured to predict a heat disturbance affecting the building zone as a function of one or more exogenous parameters and a physics model configured to predict a temperature of the building zone as a function of the heat disturbance and an amount of heating or cooling provided to the building zone by HVAC equipment. The processing circuit is configured to execute a combined training procedure to determine parameters of the disturbance model and parameters of the physics model, generate control signals for the HVAC equipment using the disturbance model to predict the heat disturbance and applying the heat disturbance as an input to the physics model, and operate the HVAC equipment to provide the heating or cooling to the building zone in accordance with the control signals.

公开(公告)号：US20220317634A1

公开(公告)日：2022-10-06

申请号：US17722050

申请日：2022-04-15

Applicant: Johnson Controls Technology Company

Inventor： Youngchoon Park ,  Sudhi R. Sinha ,  Vijaya S. Chennupati ,  Vaidhyanathan Venkiteswaran ,  Erik S. Paulson

IPC: G05B6/02 ,  G06F16/901 ,  G05B15/02 ,  G06F16/28

Abstract: A web services platform includes a data collector and a timeseries service. The data collector is configured to collect feedback samples provided by one or more sensors of a building management system and generate one or more feedback timeseries including a plurality of the feedback samples. The timeseries service is configured to identify a feedback control workflow that uses the feedback timeseries as an input and defines one or more processing operations to be applied to the feedback samples of the feedback timeseries, perform the one or more processing operations defined by the feedback control workflow to generate a control signal timeseries including a set of control signal samples, and provide a control signal including at least one of the control signal samples or the control signal timeseries as an output to controllable building equipment of the building management system that operate using the control signal as an input.

公开(公告)号：US11460221B2

公开(公告)日：2022-10-04

申请号：US16804864

申请日：2020-02-28

Applicant: Johnson Controls Technology Company

Inventor： Hamid Ouabdenbi ,  William M. Harris ,  Kirankumar A. Muley ,  Sumedh J. Suryawanshi

IPC: F24H3/08 ,  F27D17/00

Abstract: A furnace for a heating, ventilation, and/or air conditioning (HVAC) system includes a heat exchanger tube including a tube inlet and a tube outlet, such that the heat exchanger tube is configured to receive combustion products via the tube inlet, circulate the combustion products through the heat exchanger tube, and discharge the combustion products via the tube outlet. Additionally, the furnace includes a collector box coupled to the heat exchanger tube and having a cavity configured to receive the combustion products via the tube outlet. The furnace includes a diverter plate disposed within the cavity, where the diverter plate overlaps the tube outlet to disperse the combustion products received via the tube outlet throughout the collector box.

公开(公告)号：US11454940B2

公开(公告)日：2022-09-27

申请号：US16418715

申请日：2019-05-21

Applicant: Johnson Controls Technology Company

Inventor： Anas W. I. Alanqar ,  Matthew J. Ellis ,  Michael J. Wenzel ,  Mohammad N. ElBsat

IPC: G05B13/04 ,  G06N20/00

Abstract: An environmental control system for a building including building equipment operable to affect a variable state or condition of the building. The system includes a controller including a processing circuit. The processing circuit can obtain training data relating to operation of the building equipment and can perform a system identification process to identify parameters of a system model using the training data. The processing circuit can augment the system model with a disturbance model and estimate values of a historical heat disturbance in the training data based on the augmented system model. The processing circuit can train one or more heat disturbance models based on the training data and the estimated values. The processing circuit can predict a heat disturbance using the augmented system model along with the one or more heat disturbance models and can control the building equipment based on the predicted heat disturbance.

公开(公告)号：US11454420B2

公开(公告)日：2022-09-27

申请号：US16282940

申请日：2019-02-22

Applicant: Johnson Controls Technology Company

Inventor： Bennie D. Hoyt ,  Brian D. Rigg

IPC: F24F13/32 ,  F25B39/02 ,  F24F1/18 ,  F24F1/16 ,  F24F13/30

Abstract: A heat exchanger assembly includes a first heat exchanger plate and a second heat exchanger plate each include an outer boundary edge. The heat exchanger assembly also includes a service plate configured to be coupled to the outer boundary edge of each of the first and second heat exchanger plates. The service plate includes multiple sections coupled together to form a single plate, wherein each section of the multiple sections is configured to be individually removed to provide access to a space between the first and second exchanger plates.

公开(公告)号：US20220299233A1

公开(公告)日：2022-09-22

申请号：US17204605

申请日：2021-03-17

Applicant: Johnson Controls Technology Company

Inventor： Michael James Risbeck

IPC: F24F11/70 ,  G05B13/02 ,  G06N3/08 ,  G06K9/62

Abstract: A method for controlling temperature in a building zone to increase comfort and energy efficiency is shown. The method includes receiving historical data, the historical data indicative of the temperature and occupancy of the building zone during one or more historical states. The method includes training a system model to represent a dynamic response of the building zone based on the historical data. The method includes determining a control law by optimizing a policy function implemented as a neural network configured to process the trained system model. The method includes performing online control of the building zone using the control law.

公开(公告)号：US11441826B2

公开(公告)日：2022-09-13

申请号：US17225819

申请日：2021-04-08

Applicant: Johnson Controls Technology Company

Inventor： Jeb W. Schreiber ,  Eric H. Albrecht ,  Kevin D. Krebs ,  Justin P. Kauffman ,  Brian L. Stauffer ,  Xiuping Su ,  Li Wang ,  Fang Xue

IPC: F25B40/02 ,  F25B39/04 ,  F28D7/16 ,  F28D5/02 ,  F28D3/02 ,  F28D3/04 ,  F28F9/02 ,  F25B25/00 ,  F28D21/00 ,  F25B41/39

Abstract: Embodiments of the present disclosure relate to a vapor compression system that includes a refrigerant loop, a compressor disposed along the refrigerant loop and configured to circulate refrigerant through the refrigerant loop, a condenser disposed downstream of the compressor along the refrigerant loop and configured to condense vapor refrigerant to liquid refrigerant, a subcooler coupled to the condenser, where the subcooler is external of a shell of the condenser, and where the subcooler is configured to receive the liquid refrigerant from the condenser and to cool the liquid refrigerant to subcooled refrigerant, and an evaporator disposed downstream of the subcooler along the refrigerant loop and configured to evaporate the subcooled refrigerant to the vapor refrigerant.

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.

公开(公告)号：US11429122B2

公开(公告)日：2022-08-30

申请号：US16014735

申请日：2018-06-21

Applicant: Johnson Controls Technology Company

Inventor： Jay C. Walser

IPC: G05D23/19 ,  F24F11/77 ,  F24F3/044 ,  F24F11/49 ,  F24F3/14 ,  F24F11/74 ,  F24F11/86 ,  F24F11/65 ,  F24F110/10 ,  F24F110/20 ,  F24F140/20

Abstract: The present disclosure relates to a climate management system having a control system configured to control climate characteristics of a building. The control system further includes a memory device and a processor. The memory device includes instructions that, when executed by the processor, cause the processor to receive, via a sensor, data indicative of an evaporator coil temperature of the climate management system, and operate an air mover of the climate management system to control supply of conditioned air to the building based on the evaporator coil temperature.