Donaldson Comapny, Inc.

Jacob C Savstrom

Johnny Craessaerts

Bart Catoor

Johan G Dewit

Kristof Decoster

Rui Sun

Anthonius Jan-Baptist Maria Moers

Tim Billiau

Xiaobin Wang

Thomas M Weik

Derek Owen Jones

Chad M Goltzman

Robin Glisson

Matthew J Anderson

John H Chastain, Jr

Peter P Vitko

Patricia A Ignacio-de Leon

Charles E Kotasek

Klenton T Willis

Anthonius Moers

Johan Dewit

Embodiments herein relate to monitoring systems that can learn patterns of filtration system operation and then use the learned patterns to monitor ongoing filtration system operation/performance. In a first aspect, a monitoring system for an air filtration system is included having a control circuit, and a pressure sensor, wherein the pressure sensor is in electronic communication with the control circuit. The monitoring system can be configured to store data reflecting signals of the pressure sensor, evaluate the stored data representing a first time period to derive a valve operating pattern, and compare data from the pressure sensor obtained after the first time period against the derived valve operating pattern to identify an abnormal valve event.

Air filtration monitoring system with learning features

A fume extractor has an extractor housing () defining an outlet (). A hose () is coupled to the extractor housing that defines a first inlet (). A diffusion plate () is coupled to the extractor housing that defines a plurality of openings () cumulatively defining a second inlet (). A fan () is disposed in the extractor housing, where the fan configured to connect each of the first inlet and the second inlet to the outlet. A first supporting surface () is opposite the diffusion plate relative to the extractor housing and a second supporting surface () at least 80° to the diffusion plate, where the first supporting surface and the second supporting surface are configured to selectively rest on a planar surface. The fume extractor defines a hose channel () configured to selectively receive the hose.

Fume extractor

Air cleaner assemblies, components, and features are described. The features can be used to provide that the air cleaner assembly includes a housing and cover within which a filter cartridge having a media pack and a seal arrangement surrounding the media pack can be installed. The air cleaner assembly may also include a projection-receiver arrangement in which the filter cartridge has at least one first member and the housing has at least one second member that interacts with the first member. In one example, a portion of the seal arrangement is coplanar with the first member and a portion that is below the first member such that the first member is located between the seal arrangement and an inlet end of the filter cartridge.

Filter cartridges; air cleaner assemblies; housings; features components; and, methods

This disclosure describes a filter medium that minimizes the adverse effects of variations in flow rate on filter medium efficiency without a corresponding increase in pressure drop. The filter medium includes a support layer, a continuous fine fiber layer, and an efficiency layer. The continuous fine fiber layer includes a continuous fine fiber that has a diameter of up to 10 micrometers and is located downstream of the efficiency layer.

Filter medium comprising a fine fiber layer

A cylindrical filter element having a central longitudinal axis and filter media including a plurality of radially extending pleats arranged in a pattern that repeats around the central longitudinal axis. Each of the pleats comprises an inner pleat tip, wherein the inner pleat tips of each pattern define an open area that extends along a height of the filter element, and wherein each pattern of pleats comprises a first series of intermediate pleats that descends in length from a major pleat to a minor pleat and a second series of intermediate pleats that ascends in length from the minor pleat to a major pleat of an adjacent pattern of pleats.

Periodic radial symmetry for filter pleating

A pleated media pack includes a section of media configured into a tube defining an interior volume and an open opening at one end. A ratio of the pleat depth to a diameter of the opening is greater than 0.2. At least some of the pleats at one end of the media pack are inverted. In some examples, the pleats include major pleats alternating with minor pleats.

Self-supporting folded sheet material, filter elements, and methods

A pleated media pack includes a section of media configured into a tube defining an interior volume and an open opening at one end. At least some of the pleats at both ends of the media pack are inverted. In some examples, the pleats include major pleats alternating with minor pleats.

Growing community of inventors

Plymouth, MN, United States of America

Jacob C Savstrom