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公开(公告)号：US20250012475A1
公开(公告)日：2025-01-09
申请号：US18894072
申请日：2024-09-24
Applicant: TONGZHOU LANHAI (BEIJING) HOLDING CO.,LTD
Inventor： Lin DONG , Ning SUN , Xiangfang LI
IPC: F24F11/75 , F24F11/89 , F24F110/40 , G01F1/42
Abstract: An air volume control valve capable of accurately measuring an air volume is provided. The air volume control valve includes a round-shaped valve body, and a valve blade and an orifice plate provided in the round-shaped valve body, where the orifice plate is located upstream of the valve blade; an upstream pressure tapping port and a downstream pressure tapping port are respectively provided upstream and downstream of the orifice plate; a distance from both the upstream pressure tapping port and the downstream pressure tapping port to the orifice plate is 0.5 times a valve diameter; the valve blade is located downstream of the downstream pressure tapping port; an inlet side of the round-shaped valve body is provided with a convergent duct fitting; and the convergent duct fitting is located at a distance of once the valve diameter upstream of the orifice plate and is tapered along an air flow direction.
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公开(公告)号：US12085299B2
公开(公告)日：2024-09-10
申请号：US17584869
申请日：2022-01-26
Applicant: Greenheck Fan Corporation
Inventor： James P. Ashton , Scott D. Madden
CPC classification number: F24F11/75 , F16K1/22 , F24F13/1426 , G05D7/0173
Abstract: An automatic airflow balancing valve, including: a housing having an inlet and an outlet and defining a flow path therethrough; a valve disc operatively connected to the housing and disposed within the flow path; and an airflow volume calibrating assembly disposed in the flow path and operatively connected to the valve disc and the housing to pivot the valve disc to a home position associated with a desired constant airflow volume. The airflow volume calibrating assembly may include an adjustment element that extends toward at least one of the inlet or the outlet.
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公开(公告)号：US20240133566A1
公开(公告)日：2024-04-25
申请号：US18277951
申请日：2022-02-24
Applicant: BELIMO Holding AG
Inventor： Patrick REISSNER , Roman WYSS
CPC classification number: F24F8/192 , F24F11/39 , F24F11/75 , F24F13/28 , F24F2110/50
Abstract: An air treatment device is disclosed. The air treatment device includes an air duct configured to deliver an air flow. A first filter stage is included and comprises at least one air filter arranged in the air duct for filtering the air flow. At least a second filter stage is also included and comprises at least one further air filter and is arranged downstream of the first filter stage (for filtering the air flow after having passed the first filter stage. The second filter stage is controllable between at least two states with different filtration efficiencies, whereby, with respect to a filtration efficiency in the first state, a filtration efficiency in the second state is lower, in particular the filtration efficiency in the second state is essentially zero. An air quality sensor is also present, the sensor allowing for measuring the air quality of the air flow in between the first and the second air filter stages.
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公开(公告)号：US11947370B2
公开(公告)日：2024-04-02
申请号：US18181813
申请日：2023-03-10
Applicant: Best Technologies, Inc.
Inventor： John C. Karamanos , Herbert Willke
IPC: G01F1/42 , F24F11/30 , F24F11/56 , F24F11/62 , F24F11/63 , F24F11/64 , F24F11/75 , F24F11/79 , F24F110/30 , F24F110/40 , F24F140/40 , G01F1/36 , G01F1/46 , G01F15/00 , G05B17/02 , G05D7/06
CPC classification number: G05D7/0647 , F24F11/30 , F24F11/62 , F24F11/75 , F24F11/79 , G01F1/363 , G01F1/42 , G01F1/46 , G01F15/003 , G05B17/02 , G05D7/0635 , G05D7/0676 , F24F11/56 , F24F11/63 , F24F11/64 , F24F2110/30 , F24F2110/40 , F24F2140/40 , G05B2219/2614 , G05B2219/36249 , G05B2219/40573
Abstract: A fluid flow device that can measure and control a flow of a fluid is described. Various procedures, including measuring, controlling, balancing, or calibration procedures can leverage differential pressure measurement. These differential pressure measurements can be measured across the fluid flow device such that a first pressure measurement is taken upstream of the fluid flow device while a second pressure measurement is taken downstream of the fluid flow device. Moreover, one or more of the various pressure measurements, and in particular the downstream pressure measurement, can be performed at stagnation zone where the flow has stagnated. Such can provide significant amplification and/or turndown capabilities.
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公开(公告)号：US20240053046A1
公开(公告)日：2024-02-15
申请号：US18496196
申请日：2023-10-27
Applicant: Rheem Manufacturing Company
Inventor： Baojie Mu
CPC classification number: F24F11/75 , F24F11/76 , F24F2110/40
Abstract: A system for controlling air flow in an air handling unit having an air mover is provided. The system includes a first and a second sensing device, each receiving a first input indicative of electric power and a second input indicative of properties of air, respectively. The system further includes a processing unit to determine heat generated from a motor of the air mover based on the first input, determine density of air based on the heat generated from the motor based on the second input, and determine an actual air flow rate based on the density of the air, a speed of the motor, and dimensional characteristics of the air handling unit. Further, the speed of the motor is controlled when the actual air flow rate is different from a target air flow rate.
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Patent Agency Ranking
公开(公告)号：US20240053045A1
公开(公告)日：2024-02-15
申请号：US18198547
申请日：2023-05-17
Applicant: Precision Air Products Co.
Inventor： Ted A. Folstad
CPC classification number: F24F11/75 , F24F11/49 , F24F11/63 , F24F7/065 , F24F11/77 , F24F8/108 , F24F2110/40
Abstract: Systems and methods for controlling operation of one or more fans of an air handling system having one or more filters or filter banks. A current air volume at an inlet side of the fan(s) is determined. In some embodiments, the inlet side air volume is determined via sensed pressure at the inlet side (e.g., pressure transducer open to a flow station at the inlet side). A controller operates to control or regulate a speed of the fan in a manner that maintains a constant air volume through the air handling system, for example based upon a comparison of the current air volume at the fan with a target air volume.
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公开(公告)号：US20240012435A1
公开(公告)日：2024-01-11
申请号：US18469120
申请日：2023-09-18
Applicant: Best Technologies, Inc.
Inventor： John C. Karamanos , Herbert Willke
CPC classification number: G05D7/0647 , G01F1/42 , G01F15/003 , F24F11/62 , F24F11/30 , F24F11/79 , G05B17/02 , G05D7/0635 , G05D7/0676 , F24F11/75 , F24F2110/30
Abstract: A method/structure for remotely calibrating a product fluid flow device having one or more apertures with aggregate area Ao, where fluid flows along a fluid flow path therethrough in response to pressure differentials ΔP across the apertures. Calibration can occur on a calibration device to determine a fluid flow profile for a product device. In response to a determination that the product device is installed according to a different arrangement than used during calibration, the flow profile can be updated according to the different arrangement and provided to the product device in situ.
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公开(公告)号：US11828480B2
公开(公告)日：2023-11-28
申请号：US17123510
申请日：2020-12-16
Applicant: Rheem Manufacturing Company
Inventor： Baojie Mu
IPC: F24F11/64 , F24F11/75 , F24F11/76 , F24F110/40 , F24F110/10 , F24F110/20
CPC classification number: F24F11/75 , F24F11/76 , F24F11/64 , F24F2110/10 , F24F2110/20 , F24F2110/40
Abstract: A system for controlling air flow in an air handling unit having an air mover is provided. The system includes a first and a second sensing device, each receiving a first input indicative of electric power and a second input indicative of properties of air, respectively. The system further includes a processing unit to determine heat generated from a motor of the air mover based on the first input, determine density of air based on the heat generated from the motor based on the second input, and determine an actual air flow rate based on the density of the air, a speed of the motor, and dimensional characteristics of the air handling unit. Further, the speed of the motor is controlled when the actual air flow rate is different from a target air flow rate.
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公开(公告)号：US20230205237A1
公开(公告)日：2023-06-29
申请号：US18177863
申请日：2023-03-03
Applicant: Best Technologies, Inc.
Inventor： John C. Karamanos , Herbert Willke
CPC classification number: G05D7/0647 , G01F1/42 , G01F15/003 , F24F11/62 , F24F11/30 , F24F11/79 , G05B17/02 , G05D7/0635 , G05D7/0676 , F24F11/75 , F24F2110/30
Abstract: The LFFC technology allows for accurate measurement and metering of fluids in a HVAC system-based on parameters such as pressure, velocity, volume, particles, and temperature. A procedure in a processor allows for the calibration of the aperture devices thru various methods in real time based on the actual system performance. The fluid aperture device calibration curves can be developed in a lab environment, on calibrated flow stands and/or field calibration methods using adaptive learning software based on sensor data. The procedure can rely on calibration curves, characterizations, equations, predictive analysis, machine learning, artificial intelligence, simulation software, calibrated flow stands, duplicating environmental conditions, various sensor data and programming software executed by a processor or system software. Upstream and downstream reference points for temperature, flow, particles, and pressure can be used as additional data to auto calibrate/commission the system thru the software.
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公开(公告)号：US20220261016A1
公开(公告)日：2022-08-18
申请号：US17726866
申请日：2022-04-22
Applicant: Best Technologies, Inc.
Inventor： John C. Karamanos , Herbert Willke
Abstract: A fluid distribution apparatus that can serve as a fluid metering device that is operable on a single platform by building automation systems. The building automation system may be controllable by a single software system or network accessible locally on site or remotely off site. The fluid distribution apparatus can operate independently or coupled with multiple like apparatuses for system operation. It is a high turndown, self-balancing system which allows for continuous commissioning with built-in fault diagnostic systems and that may be used as a supply system, exhaust system, or a combination thereof. The fluid distribution apparatus includes fluid metering devices that operate progressively based on unique actuation mechanisms and/or algorithms that allow for precise flow control and feedback to self-balance and commission the system.
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