公开(公告)号：US20250043978A1

公开(公告)日：2025-02-06

申请号：US18916205

申请日：2024-10-15

Applicant: Best Technologies, Inc.

Inventor： John C. Karamanos ,  Herbert Willke

IPC: G05D7/06 ,  F24F11/30 ,  F24F11/56 ,  F24F11/62 ,  F24F11/63 ,  F24F11/64 ,  F24F11/75 ,  F24F11/79 ,  F24F110/30 ,  F24F110/40 ,  F24F140/40 ,  G01F1/36 ,  G01F1/42 ,  G01F1/46 ,  G01F15/00 ,  G05B17/02

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.

公开(公告)号：US20240410728A1

公开(公告)日：2024-12-12

申请号：US18804221

申请日：2024-08-14

Applicant: Drägerwerk AG & Co. KGaA

Inventor： Tobias OTTE ,  Helena KASZÁS ,  Ralph-Peter JACOBI ,  Philipp SCHÜTZE

IPC: G01F1/42 ,  B23K26/073 ,  B23K26/57 ,  F16L47/02 ,  G01F15/14

Abstract: A flow tube (10) has a housing (12, 14) including at least a first housing half (12) and a second housing half (14). Each housing half (12, 14) has a connection surface (20, 22) intended for combination with the other housing half (12, 14). The connection surfaces (20, 22) enclose a mounting gap (30) for an orifice element (16). Outside of the mounting gap (30) the connection surfaces (20, 22) butt against each other in some sections by respective abutting surface portions (32, 34), and outside of the mounting gap (30) and outside of the abutting surface portions (32, 34) the housing halves (12, 14) are integrally combined with each other. A method is provided for producing the flow tube, namely for integrally joining the housing halves (12, 14).

公开(公告)号：US12152927B2

公开(公告)日：2024-11-26

申请号：US17745684

申请日：2022-05-16

Applicant: Jason Bradly Hall

Inventor： Jason Bradly Hall

IPC: G01F25/10 ,  G01F1/42 ,  G01F15/061

Abstract: This disclosure describes systems, methods, and devices related to a remote calibration controller. The remote calibration controller may be capable of performing the procedure to remotely test and calibrate differential pressure, static pressure, and temperature on a remotely located fixed orifice plate flow measurement device through the use electromechanical and electro pneumatic hardware located at the site of the flow measurement device that are controlled by on-site controller/logic circuitry remotely accessed via bi-directional communications.

公开(公告)号：US20240255145A1

公开(公告)日：2024-08-01

申请号：US18160023

申请日：2023-01-26

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Shadi Mohammed AL-HAZMI ,  Mohannad Marie AL-SHAHRANI ,  Hadi Abdulrahman AL-SHEHRI ,  Ahmad Mohammad AL-AHDAL

IPC: F23N1/00 ,  G01F1/42 ,  G01F15/14 ,  G05D7/06

CPC classification number: F23N1/002 ,  G01F1/42 ,  G01F15/14 ,  G05D7/0635 ,  F23N2225/06 ,  F23N2235/16 ,  F23N2235/24

Abstract: A variable orifice flow meter system includes a housing defining a flow passage and at least one plate extending into the flow passage and defining an orifice. The at least one plate is movably supported such that a size of the orifice may be adjusted. Upstream and downstream pressure sensors may measure fluid pressures upstream and downstream of the orifice and a drive mechanism may move the at least one plate. A controller may instruct the drive mechanism to move the at least one the plate such that a predetermined orifice size is defined in response to detecting an upstream pressure within a predetermined pressure range, determine a pressure differential across the orifice and calculate a flow rate through the flow passage based on the pressure differential when the pressure differential meets a predetermined threshold.

公开(公告)号：US12032395B2

公开(公告)日：2024-07-09

申请号：US18191909

申请日：2023-03-29

Applicant: Best Technologies, Inc.

Inventor： John C. Karamanos ,  Herbert Willke

IPC: G05D7/06 ,  F24F11/30 ,  F24F11/62 ,  F24F11/75 ,  F24F11/79 ,  G01F1/36 ,  G01F1/42 ,  G01F1/46 ,  G01F15/00 ,  G05B17/02 ,  F24F11/56 ,  F24F11/63 ,  F24F11/64 ,  F24F110/30 ,  F24F110/40 ,  F24F140/40

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: An all-inclusive fluid flow device that can variably magnify differential pressure, measure, and control a flow of a fluid is described. Various procedures, including measuring, controlling, balancing, or calibration procedures can leverage a variably magnified differential pressure measurement. 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 magnification and/or turndown capabilities and the magnification can vary based on a damper position and/or apertures dimensions.

公开(公告)号：US20240085930A1

公开(公告)日：2024-03-14

申请号：US17930893

申请日：2022-09-09

Applicant: HORIBA STEC, Co., Ltd.

Inventor： Maximilian Martin Gundlach ,  Patrick Lowery ,  Tadahiro Yasuda

IPC: G05D11/13 ,  B05C5/02 ,  G01F1/42 ,  G01F15/00

CPC classification number: G05D11/132 ,  B05C5/0225 ,  G01F1/42 ,  G01F15/005

Abstract: A hybrid flow ratio controller system is provided, which includes an inlet configured to receive a total inlet fluid flow and three or more distribution channels. Each of the three or more distribution channels has a respective variable flow control valve and carries a respective portion of the total inlet fluid flow. The hybrid flow ratio controller further includes a controller operatively coupled to the respective variable flow control valves. The controller is configured to control a flow rate of at least a first distribution channel according to a predetermined flow ratio of the inlet fluid flow in accordance with a flow ratio control mode, to control a flow of at least a second distribution channel in either a flow rate control mode or a pressure control mode, and to control a third distribution channel in an overflow mode.

公开(公告)号：US11906335B2

公开(公告)日：2024-02-20

申请号：US17052460

申请日：2019-04-11

Applicant: Endress+Hauser Flowtec AG

Inventor： Michael Kirst

IPC: G01F1/22 ,  G01F1/325 ,  G01F1/38 ,  G01F1/42 ,  G01F1/66 ,  G01F1/84

CPC classification number: G01F1/3259 ,  G01F1/38 ,  G01F1/42 ,  G01F1/66 ,  G01F1/8468

Abstract: A measuring system includes: a lumen forming a flow path and a flow obstruction arranged in the flow path for effecting a disturbance in a flowing fluid; a sensor arrangement adapted to produce a first sensor signal and a second sensor signal; and transmitter electronics. The transmitter electronics are adapted to receive both the first and second sensor signals and to convert such into first and second sensor signal sampling sequences approximating the first and second sensor signals, respectively, the transmitter electronics further adapted using a digital adaptive filter to ascertain from the first sampling sequence a filter coefficients set and therewith to form a z-transfer function for filtering the second sampling sequence such that the z-transfer function is determined by the filter coefficients set, the signal filter and the second sampling sequence to produce a wanted signal sequence, to produce therefrom digital measured values representing a measurement variable.

公开(公告)号：US20230366709A1

公开(公告)日：2023-11-16

申请号：US18028608

申请日：2021-09-27

Applicant: TSI Incorporated

Inventor： Yilmaz Bayazit ,  Tyler Anderson ,  Richard J. Remiarz

IPC: G01F1/44 ,  G01N1/24 ,  G01F1/42 ,  G01F1/36 ,  G01N1/22 ,  G01N15/14

CPC classification number: G01F1/44 ,  G01N1/24 ,  G01F1/42 ,  G01F1/363 ,  G01N1/2273 ,  G01N15/1459 ,  G01N2015/1486 ,  G01F15/063

Abstract: Disclosed herein are systems and methods for measuring and controlling a flow rate through a particle counter or active air sampler. As disclosed herein, a fluid flows through a venturi tube and an orifice in the system at a predetermine velocity. A pressure differential between an inlet of the instrument and a throat section of the venturi tube is measured. The flow rate through the system can be determined based on the pressure differential and an intensive property of the fluid. An alarm can be activated when the flow rate is outside of a flow rate range.

公开(公告)号：US11815923B2

公开(公告)日：2023-11-14

申请号：US17814327

申请日：2022-07-22

Applicant: Best Technologies, Inc.

Inventor： John C. Karamanos ,  Herbert Willke

IPC: G05D7/06 ,  G01F1/42 ,  G01F15/00 ,  F24F11/62 ,  F24F11/30 ,  F24F11/79 ,  G05B17/02 ,  F24F11/75 ,  F24F110/30 ,  F24F140/40 ,  F24F11/63 ,  F24F11/64 ,  F24F110/40 ,  F24F11/56

CPC classification number: G05D7/0647 ,  F24F11/30 ,  F24F11/62 ,  F24F11/75 ,  F24F11/79 ,  G01F1/42 ,  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 method/structure for 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 is effected relative to a calibration fluid flow device having a geometry and operational parameters corresponding to those of the product fluid flow device. A piecewise curved calibration controller establishes calibration conditions and generates a discrete point calibration flow rate (dpCFR) Function by measuring at a sparse set of points in a range of interest and determining a piecewise curved mathematical representation of fluid flow through the calibration fluid flow device. Data representative of the CFR function is transferred to a product blade controller, which processes the mathematical representation, and controls fluid flow through product fluid flow device based on values extracted from the received dpCFR Function.

公开(公告)号：US11662235B2

公开(公告)日：2023-05-30

申请号：US17492325

申请日：2021-10-01

Applicant: Rosemount Aerospace Inc.

Inventor： Scott D. Isebrand ,  Greg Allen Seidel ,  Scott Wigen

IPC: G01F1/05 ,  G01F1/46 ,  G01F1/688 ,  G01F1/42

CPC classification number: G01F1/46 ,  G01F1/42 ,  G01F1/688

Abstract: A probe head of an air data probe includes a body extending from a first end to a second end of the probe head and a rod heater. The body includes an inlet adjacent the first end of the probe head, an air passageway extending through the body from the inlet to a second end of the probe head, a water dam extending radially through the body such that the air passageway is redirected around the water dam, a heater bore extending within the body, and an enhanced conduction area between heater bore and an exterior surface of the probe head. The inlet, the air passageway, the water dam, and the heater bore are all unitary to the body. The rod heater is positioned within the heater bore.