公开(公告)号：US11478736B2

公开(公告)日：2022-10-25

申请号：US17046915

申请日：2019-04-24

Applicant: Donaldson Company, Inc.

Inventor： John H. Chastain, Jr. ,  Daryl L. Quam ,  Eric P. O'Hara

IPC: B01D50/00 ,  B01D45/16 ,  F02M35/02 ,  F02M35/022 ,  B04C3/00

Abstract: A precleaner arrangement for separating a portion of entrained material from air flow air entering an engine air cleaner. The precleaner arrangement includes a precleaner housing and at least a first flexible air deflection vane with a fixed portion secured to the precleaner housing and a deflectable portion. The deflectable portion includes a curved section extending from the fixed portion and a tail section extending from the curved section. The deflectable portion is configured to deflect in response to a sufficient air flow rate change through the precleaner arrangement, in use. Some arrangements will also include a second stage, outlet vane assembly.

公开(公告)号：US20240001263A1

公开(公告)日：2024-01-04

申请号：US18038582

申请日：2021-11-24

Applicant: Donaldson Company, Inc.

Inventor： Davis B. Moravec ,  Daryl L. Quam

IPC: B01D21/00 ,  B01D21/26

CPC classification number: B01D21/0087 ,  B01D21/265

Abstract: A hydrodynamic separator is configured to separate a liquid having dispersed particles. The separator has a substrate and a liquid channel defined by the substrate, where the liquid channel is configured to receive a liquid having a Reynolds number (Re) within the channel. The liquid channel has an inlet and an outlet and is curved to define an inner radius (RC). The liquid channel has a liquid channel length (LD) along the curve and a rectangular cross-section along the length of the curve, where the rectangular cross-section has a height, a width (w), and a hydraulic diameter (DH). The liquid channel length (LD) is greater than or equal to a linear focusing length (Lf), and (I)+6.4, where α is the particle diameter. The liquid channel length (LD) is greater than or equal to a linear focusing length (Lf), and (II)+24.3. In various embodiments the liquid channel length (LD) is greater than or equal to a linear focusing length (L), and (III)+24.3.








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公开(公告)号：US12222271B2

公开(公告)日：2025-02-11

申请号：US17059189

申请日：2019-05-31

Applicant: Donaldson Company, Inc.

Inventor： Davis B. Moravec ,  Daryl L. Quam ,  Cullen E. Hall ,  Brian R. Tucker ,  Andrew J. Dallas

IPC: G01N15/0205 ,  F02M37/26 ,  F02M37/32 ,  G01F1/74 ,  G01F23/292 ,  G01N15/06 ,  G01N33/28 ,  G01N15/075

Abstract: A droplet detection system includes a sensing channel, such as a microfluidic channel, configured to receive a flow of fluid that may contain one or more liquid droplets dispersed in the fluid. The cross-sectional area of the sensing channel maybe configured to allow droplets of a predetermined size to flow through the channel one at a time. A light source, a light aperture, and a light detector are positioned outside the sensing channel, which use light in a selected frequency band that has a substantially different absorbance for the liquid compared to the fluid. Liquid droplets may be detected and characterized using a signal from the light detector.

公开(公告)号：US20240328657A1

公开(公告)日：2024-10-03

申请号：US18581238

申请日：2024-02-19

Applicant: Donaldson Company, Inc.

Inventor： Michael J. Wynblatt ,  Matthew S. Whitten ,  Wade A. Wessels ,  Kyle L. Bennett ,  Elizabeth A. Jackson ,  Daryl L. Quam

IPC: F24F11/64 ,  F24F11/30 ,  F24F11/52 ,  F24F110/64 ,  F24F110/65 ,  F24F110/66 ,  F24F110/70 ,  F24F110/72

CPC classification number: F24F11/64 ,  F24F11/30 ,  F24F11/52 ,  F24F2110/64 ,  F24F2110/65 ,  F24F2110/66 ,  F24F2110/70 ,  F24F2110/72

Abstract: Embodiments herein relate to indoor air quality monitoring systems and related methods. In an embodiment an indoor air quality monitoring system is included having a control circuit, a memory circuit, and a sensor channel interface. The system can be configured to store a model set of data reflecting information on air quality determining features within a physical indoor environment, receive sensor data regarding air quality at discrete points within the physical indoor environment, and evaluate the sensor data regarding air quality and perform operations to generate one or more outputs relating to air quality within the physical indoor environment. Other embodiments are also included herein.

公开(公告)号：US20230390769A1

公开(公告)日：2023-12-07

申请号：US18204105

申请日：2023-05-31

Applicant: Donaldson Company, Inc.

Inventor： Jacob A. Nelson ,  Davis B. Moravec ,  Daryl L. Quam

IPC: B01L3/00

CPC classification number: B01L3/502761

Abstract: The technology disclosed herein relates to hydrodynamic separator. The hydrodynamic separator can be configured to separate a liquid having dispersed particles having a diameter. The hydrodynamic separator has a substrate and a liquid channel at least partially defined by the substrate. The liquid channel is configured to receive a liquid within the channel. The liquid channel has an inlet and an outlet. The outlet has a first outlet branch and a second outlet branch. The liquid channel has an inner wall defining an inner radius around a central axis and an outer wall defining an outer radius around the central axis. The liquid channel has a liquid channel length along the inner wall from the inlet to the outlet. The liquid channel has a channel width between the inner wall and outer wall, where the channel has a tapered region where the channel width increases towards the outlet.

公开(公告)号：US20210223154A1

公开(公告)日：2021-07-22

申请号：US17059189

申请日：2019-05-31

Applicant: Donaldson Company, Inc.

Inventor： Davis B. Moravec ,  Daryl L. Quam ,  Cullen E. Hall ,  Brian R. Tucker ,  Andrew J. Dallas

IPC: G01N15/02 ,  G01N33/28 ,  G01F1/74 ,  G01F23/292 ,  G01N15/06 ,  F02M37/26 ,  F02M37/32

Abstract: A droplet detection system includes a sensing channel, such as a microfluidic channel, configured to receive a flow of fluid that may contain one or more liquid droplets dispersed in the fluid. The cross-sectional area of the sensing channel maybe configured to allow droplets of a predetermined size to flow through the channel one at a time. A light source, a light aperture, and a light detector are positioned outside the sensing channel, which use light in a selected frequency band that has a substantially different absorbance for the liquid compared to the fluid. Liquid droplets may be detected and characterized using a signal from the light detector.

公开(公告)号：US20250050258A1

公开(公告)日：2025-02-13

申请号：US18799285

申请日：2024-08-09

Applicant: Donaldson Company, Inc.

Inventor： Gerald E. Weineck, II ,  Daryl L. Quam

IPC: B01D45/16 ,  B01D46/24 ,  B01D50/20

Abstract: A separator arrangement including a tubular member extending along a longitudinal axis and a toroidal blade arrangement disposed within the tubular member in a fixed position. The toroidal blade arrangement can include a plurality of blade members, each being looped from a first end to a second end with a radially distal portion located between the first and second ends to define a radially bounded passageway extending along a second axis disposed at an oblique angle to the longitudinal axis. In one aspect, each of the blade members is looped such that an inner side surface presents both a leading face and a trailing face.

公开(公告)号：US20230356116A1

公开(公告)日：2023-11-09

申请号：US17780627

申请日：2020-11-25

Applicant: Donaldson Company, Inc.

Inventor： Davis B. Moravec ,  Daryl L. Quam ,  Andrew J. Dallas ,  Mikayla A. Yoder ,  David D. Lauer

IPC: B01D21/34 ,  G01N15/14 ,  G01N15/10 ,  B01D21/26

CPC classification number: B01D21/34 ,  G01N15/1434 ,  G01N15/1031 ,  B01D21/265 ,  G01N2015/1493 ,  G01N2015/149

Abstract: Separation elements including microfluidic channels may use a hydrodynamic separator or flow routing element to separate particles in fluids. Particle sensors may be used to count particles in each microfluidic channel. A unique orifice pattern may be used to facilitate use of a shared particle sensor for multiple microfluidic channels. Separation elements may be used in various systems, such as engine fuel systems, bulk fuel systems, hydraulic particle filters, and hydraulic deaeration enhancers.

公开(公告)号：US20220395768A1

公开(公告)日：2022-12-15

申请号：US17830195

申请日：2022-06-01

Applicant: Donaldson Company, Inc.

Inventor： Davis B. Moravec ,  Daryl L. Quam ,  Jacob A. Nelson ,  Bradly G. Hauser ,  Matthew P. Goertz ,  Timothy J. Streed ,  Connor J. Colling

IPC: B01D21/34 ,  B01D21/26 ,  B01D21/00

Abstract: Some embodiments of the technology disclosed herein relate to a system having a hydrodynamic separator element defining an element inlet and an element outlet. The element outlet has a first element outlet and a second element outlet. The hydrodynamic separator element has a plurality of curved microfluidic channels in fluid communication. Each of the plurality of microfluidic channels are arranged to operate in parallel. Each microfluidic channel defines a channel inlet downstream of the element inlet and a channel outlet having a first channel outlet upstream of the first element outlet and a second channel outlet upstream of the second element outlet. A flow characteristic sensor is in sensing communication with the separator element. A controller is in data communication with the flow characteristic sensor, where the controller is configured to provide a first alert upon the flow characteristic being outside a first threshold.