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41.发明公开公开(公告)号：US20230168878A1
公开(公告)日：2023-06-01
申请号：US17456784
申请日：2021-11-29
IPC分类号： G06F8/65 , G05B19/042
CPC分类号： G06F8/65 , G05B19/042 , G05B2219/25339
摘要： The present disclosure provides a method and apparatus for maintaining computer software of a supervisory control unit (SCU) of an industrial control system (ICS) configured to control equipment of a facility. The method includes capturing status information for the SCU and equipment that indicates at least performance of the SCU and the equipment, and connectivity of the SCU with the equipment. The method includes patching the computer software automatically to update, change, fix, or improve the computer software. The method includes capturing corresponding status information for the SCU and equipment and performing an audit of the ICS after the patch in which the status information and the corresponding status information are compared to identify any deviations in the performance or the connectivity of the equipment resulting from the patch. The method includes generating an audit report of the ICS that indicates any of the deviations that satisfy a reporting threshold.
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公开(公告)号：US11661941B2
公开(公告)日：2023-05-30
申请号：US17712266
申请日：2022-04-04
CPC分类号： F04C29/065 , F04C18/16 , F04C2270/125
摘要： Systems and methods to isolate a vibration source (e.g., a compressor) externally are disclosed. The embodiments generally include preventing/reducing vibration and/or pulsation transmission from the vibration source by one or more functional/structural isolating members, and preventing/reducing sound radiated from the vibration source by one or more sound enclosures.
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43.发明公开公开(公告)号：US20230151997A1
公开(公告)日：2023-05-18
申请号：US18057362
申请日：2022-11-21
CPC分类号： F24F12/006 , F24F11/41 , F24F2012/007 , F24F2203/104
摘要： An air handler includes a housing with a heat exchanger core. The housing includes a faceplate, a roof panel, a base panel, a first side panel, and a second side panel. A first tunnel and a second tunnel are connected to the housing at the faceplate. A septum protrudes from the faceplate and connects the core at a front edge. The air handler further includes a first recirculation path and a second recirculation path inside the housing. The first and second recirculation paths are defined by the septum, the housing, and the core. The first and second recirculation paths are configured to direct a portion of airflow from the first tunnel to the second tunnel. The air handler further includes a first damper and a second damper disposed on the faceplate and configured to obstruct the first recirculation path and the second recirculation path respectively.
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公开(公告)号：US20230139727A1
公开(公告)日：2023-05-04
申请号：US17453454
申请日：2021-11-03
摘要： An interstage throttle for a centrifugal compressor includes a flow guide plate, a throttle ring, a drive ring, and linkage assemblies. The flow guide plate includes guide vanes that form channels that direct working fluid in between stages of the compressor. The linkage assemblies connect the drive ring to the throttle ring such that rotation of the drive ring moves the throttle ring in an axial direction. Teeth of the throttle ring partially block the channels when the throttle ring is in an extended position. A method of operating a centrifugal compressor includes directing the working fluid discharged from the first stage to a second stage via channels in a interstage throttle. A centrifugal compressor includes a first stage with a first impeller, a second stage with a second impeller, and an interstage throttle fluidly connecting the first stage to the second stage.
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公开(公告)号：US20230134928A1
公开(公告)日：2023-05-04
申请号：US17453126
申请日：2021-11-01
发明人： Lucas Duffy , Steven J. Pitts , Justin D. Piggush
IPC分类号： F25B41/35
摘要： An electronic actuator assembly operates an in-line valve. A valve seat of the in-line valve is surrounded by a plate. The plate can include one or more openings configured to allow fluid to pass through the plate. A perimeter of the plate outside of the openings can be configured to have ends of pipes joined on either side of the plate. The in-line valve can be operated by an electronic actuator. The electronic actuator can be powered by a supply line that enters the assembly through the plate. The electronic actuator assembly can be incorporated in to a fluid circuit to serve as an expander. The electronic actuator can be located in a housing to direct flow around the electronic actuator. The electronic actuator can be installed in place of an orifice plate of an existing fluid circuit of a heating, ventilation, air conditioning, or refrigeration (HVACR) system.
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46.发明授权公开(公告)号：US11639820B2
公开(公告)日：2023-05-02
申请号：US17130937
申请日：2020-12-22
发明人： Brian A. Kirkman , Lee R. Cline
IPC分类号： F25B49/02
摘要： Multi-compressor chiller systems can be efficiently operated by determining real time efficiency curves for the compressors currently in operation, along with any compressors that may be added to address demand, and using these efficiency curves to determine changes to compressor operation to improve efficiency in meeting chiller demand. The efficiency curves can be parabolic curves. The data used to determine the efficiency curves can be obtained through operation at a variety of lift points and a variety of load points within those lift points. The efficiency curves can be solved to find intersections where there may be staging points for adding or subtracting compressors from operation to efficiently meet demand. This operation can be automated through a controller of a control system for the multi-compressor chiller system.
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公开(公告)号：US11603856B2
公开(公告)日：2023-03-14
申请号：US16702144
申请日：2019-12-03
摘要： A centrifugal fan for use as a blower in a heating, ventilation, air conditioning, and refrigeration (HVACR) system has a plurality of blades each having a leading edge camber angle of at or about 10 degrees to at or about 30 degrees, a trailing edge camber angle of at or about 10 degrees to at or about 30 degrees, a stagger angle of at or about 35 degrees to at or about 55 degrees, and a chord having a length L, wherein the length L over the diameter of the centrifugal fan divided by the diameter D satisfies the inequality 0.25≤L/D≤0.42. The fan blades having these parameters provide improved fan efficiency at certain operating conditions. The fan blades may further have a forward or radial sweep. The fan blades may have a uniform thickness from the leading edge to the trailing edge.
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公开(公告)号：US11549717B2
公开(公告)日：2023-01-10
申请号：US17218546
申请日：2021-03-31
IPC分类号： F24F11/86
摘要： A method for adjusting compression efficiency for an HVACR system having a variable-frequency drive (VFD) is disclosed. The method includes determining a first compression efficiency, determining an operating point, determining a region of an operating map when a difference between the operating point and a previously determined operating point exceeds a predetermined threshold, adjusting a VFD input to a first input based on the region of the operating map, and controlling the VFD using the first input for a predetermined period of time. The method also includes determining a second compression efficiency and an operation restriction, adjusting the VFD input to a second input based on the operation restriction and a difference between the first compression efficiency and the second compression efficiency, and controlling the VFD using the second input. The method also includes utilizing machine learning control techniques to control several system variables to optimize the compression efficiency.
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公开(公告)号：US11536483B1
公开(公告)日：2022-12-27
申请号：US17082771
申请日：2020-10-28
发明人： Youssef A. Jaber , Wayne N. Kraft , Behrooz Karimi
IPC分类号： F24F11/74 , F24F11/64 , F24F11/65 , F24F11/79 , F24F11/89 , G05B19/042 , F24F120/12 , F24F140/40 , F24F140/50 , F24F140/10
摘要： A method is provided for controlling an HVAC system. The method includes receiving zone airflow target values for zones of a conditioned space. The method includes accessing a duct model including a first term that describes a flow factor for a zone damper as a nonlinear function of damper position, and a second term that describes zone airflow as a function of the flow factor and a branch pressure across zone-specific branches of an air circulation path. The method includes applying the zone airflow target values to the duct model to determine a damper position set, and actuating zone dampers to respective damper positions of the damper position set. The method may also include determining a value of total airflow to achieve the zone airflow target values with a total pressure target, and causing a fan to provide conditioned air with the value of the total airflow.
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公开(公告)号：US11506417B2
公开(公告)日：2022-11-22
申请号：US17139762
申请日：2020-12-31
摘要： An air handler includes a housing with a heat exchanger core. The housing includes a faceplate, a roof panel, a base panel, a first side panel, and a second side panel. A first tunnel and a second tunnel are connected to the housing at the faceplate. A septum protrudes from the faceplate and connects the core at a front edge. The air handler further includes a first recirculation path and a second recirculation path inside the housing. The first and second recirculation paths are defined by the septum, the housing, and the core. The first and second recirculation paths are configured to direct a portion of airflow from the first tunnel to the second tunnel. The air handler further includes a first damper and a second damper disposed on the faceplate and configured to obstruct the first recirculation path and the second recirculation path respectively.
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