Donaldson Comapny, Inc.

Richard Dejong

Daniel Eric Adamek

Jarren B Mills

Jason A Tiffany

Mathijs Verstraete

Gert Proost

Massimo Movia

Michael R Carlson

Andrew Christian Dahlgren

Brent L Anderson

Eli Payton Ross

Wim Van Gelder

Keith Alderson

Olivier H Ronneau

Embodiments herein relate to filtration systems that can pulse clean filter elements selectively, in specific patterns, to enhance cleaning efficacy. In an embodiment, a filtration system is included having a plurality of filter element mounts configured to retain filter elements, a compressed gas supply, and a plurality of valves in fluid communication with the compressed gas supply. The system further including a control circuit configured to control actuation of the plurality of valves. The system can operate in a first mode and a second mode. Wherein operating in a first mode includes opening valves according to a first valve actuation pattern and operating in a second mode includes opening valves according to a second valve actuation pattern. The system can be configured to periodically switch from the first mode to the second mode and compare the efficacy of the two modes. Other embodiments are also included herein.

Filtration systems with selective pulse control

Included herein are filtration systems that can proactively pulse clean filter elements in response to anticipated changes, such as anticipated changes in filtration performance or anticipated changes in filtration system demand. In an embodiment, a filtration system is included having a filter element mount for a filter element, a compressed gas supply, and a valve, wherein opening the valve results in a pulse of gas directed at the filter element. A control circuit can control the valve. A communications circuit can receive data related to an anticipated change, such as data regarding an anticipated change in filtration performance and/or data regarding an anticipated change in filtration system demand. The control circuit can execute operations based on the anticipated change data such as adjusting a pressure drop threshold and initiating proactively opening the valve in the absence of a pressure drop threshold being crossed. Other embodiments are also included herein.

Filtration systems with proactive pulse cleaning

A gas turbine air intake system uses a filter element having a seal member with radial projections and radial recesses. The seal member forms a seal with components on the tube sheet of the system and at the end opposite of the tube sheet. At the end opposite of the tube sheet, there can be an assembly cover, or alternatively, an additional filter cartridge.

Filter element, systems, and methods

An air filter element includes (a) an open filter interior having a first closed end and a second open end opposite the first closed end; the second open end having an air flow aperture therethrough; (b) filter media provided in a pleated configuration and arranged around the open filter interior between the first closed end and the second open end; (c) a seal arrangement positioned at the open end of the filter element and includes an inner perimeter radial facing surface and an opposite, outer perimeter radial facing surface, wherein the inner perimeter radial facing surface includes a seal surface, and wherein one of the inner perimeter radial facing surface and the outer perimeter radial facing surface is a circular surface and the other of the inner perimeter radial facing surface and the outer perimeter radial facing surface is a non-circular surface.

Filter elements, air filter arrangements; and, methods

Filter elements are described. In an example embodiment, the filter element has a support framework and media defining a closed end and an open end. A non-circular radial seal is depicted, in an example. Variations for particular applications are described.

Filter elements; air filter arrangements; and, methods

Filter elements, air filter arrangements; and methods

A filter element that has at least two, planar, non-curved filtration panels. In a preferred embodiment, the filter element has three panels, providing a generally triangular filter element. The outlet aperture, from the filter element, generally follows the configuration of the filter. That is, a filter element having three filtration panels will have a generally three-sided outlet aperture. The outlet aperture preferably is not a true polygon, but rather, includes rounded or curved sides and/or corners. The filter element includes an outlet sealing configuration that may provide both axial and radial sealing to outlet ductwork.

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Eden Prairie, MN, United States of America

Richard Dejong