Illinois Tool Works Inc.

Brian J Hammers

Stanley Piotrowski

Andrew David Nelson

Mark Richard Christopher

Adam Joseph Frank

William Peter Maske

Bradley G Carman

Daniel P McDonald

John C Leisner

Tiffany Anne Carter

Gary Lind

Allan Thomas Hilbert

Michael P Vandenberg

Daniel P Mcdonald

Fume evacuation systems are disclosed. An example fume evacuation system includes: an air handling system for drawing components comprising air, fumes, smoke, or particulate, or a combination thereof from a metal working application; an air conduit couple to the air handling system for conveying the components from the metal working application towards the air handling system; and a hood coupled to the air conduit and configured to be positioned at the metal working application, the hood comprising a structure defining a circuitous path for particulate that, in operation, allows the airborne components to pass through the hood to the air conduit but causes particulate to cool the components.

Fume evacuation system

An extraction system is designed for metal working and other applications. The system may comprise a blower that delivers a positive pressure airflow to a hood that creates an air region for removal of airborne components from a work area. Return air is filtered in a filter region, and debris removed may be separated by a baffle in the filter region to limit re-uptake of the debris by the blower during operation of the system.

Airborne component extractor with baffled debris collection

An airborne component extraction system includes a source of a positive pressure air stream and a source of a negative pressure air stream. The air streams are directed through conduits to a hood that distributes the positive pressure air stream into a work area, and that draws the negative pressure air stream from the work area to remove airborne components within the work area. Aspects of the hood offer greatly enhanced performance in creating a controlled region for component removal and for drawing and removing the components for the work area.

Airborne component extractor hood

A fume evacuation system is designed to remove smoke, fumes, and particulate from a metal-working or other application. The system may include a cart-type base unit or may be incorporated into a fixed or semi-fixed installation that uses suction to draw air (e.g., containing smoke, fumes, and particulate) away from the metal-working application. The fume evacuation system includes a hood that creates an arduous flow path and varying velocity profile, which cools and separates any particulate matter in the suctioned air. The arduous flow path may include multiple sharp turns created by an inner deflector component and an inlet tube. The inlet tube may further contain baffles to cool particulates from the suctioned air.

A fume extraction hood is designed to be positioned above a welding, cutting, or other metal-working location and to remove hot gases, smoke and fumes produced during these processes. The hood forms a box-like structure with an extractor rail structure disposed in an internal volume of the hood. The extractor rail structure comprises panels that force sharp turns in the gases, causing particulate matter to drop out of the gases both outside and inside the extractor rail. A primary path for gases accelerates and re-directs the gases entering into the extractor rail, and within the rail. The rail may form a dropout tray that can be removed for cleanout of collected particulate. The side and end rails of the hood may create a secondary path for gas not directly intaken into the extractor rail. This secondary path is re-directed towards the extractor rail, where gas is collected and particulate is forced to drop out as it joins the primary path.

Welding fume extractor

An airborne component extraction system comprises a source of a positive pressure air stream and a source of a negative pressure air stream. Conduits allow the positive pressure air stream to be channeled to a work area, and the negative pressure air stream to be drawn from the work area to pull airborne components away from the work area. A manifold receives the conduits and aids in directing both air streams between the sources and the conduits. The manifold may support the conduits in the form of an arm that can be rotated while directing the air streams.

Airborne component extractor manifold

An airborne component extractor provides a positive pressure air stream to a work area and draws a negative pressure air stream from the work area. Conduits conduct both air streams. A movable cart-type base unit or a permanent installation may provide for the air streams. Sizes and operational parameters are selected to provide good component removal, reduce head losses, and reduce power requirements.

Airborne component extractor with improved power and pressure performance

A component extractor system includes a source of a positive pressure air stream and a source of a negative pressure air stream. Conduits convey the air streams to and from a work area where one or more nozzles create a capture region and draw airborne components into the system. The system is optimized in terms of flow ratios, dimensions of the conduits and elements of the nozzle, and so forth.

Optimized airborne component extractor

A component extraction system utilized a base unit that produces a positive pressure air stream and that draws a negative pressure air stream into the base unit. To enhance performance, and reduce head requirements and power consumption, a number of bends in the flow paths is minimized in the base unit.

Airborne component extractor with improved flow paths

A extraction system is designed for metal working and other applications. The system may comprise a cart-type base or may be incorporated into a fixed or semi-fixed installation. A blower delivers a positive pressure airflow to a hood that creates an air region by directing the air through an annular space between inner and outer shrouds, impacting the air against a single generally perpendicular flange. Return air from the operation may be mixed with fresh air, both of which may be filtered, to supply the positive pressure air. Both air streams to and from the hood may be adjusted to optimize operation. Adjustments may be made at the base unit or remotely.

Airborne component extractor with adjustable flow rates

An extraction system is designed for metal working and other applications. The system may include a blower that delivers a positive pressure airflow to a hood that creates an air region for removal of airborne components from a work area. The blower is driven by a three-phase motor in a portable base unit that may be plugged into a source of three-phase power. A rotational direction reversing switch is provided between the motor and a three-phase plug to permit reversal of the rotational direction of the motor when the motor is determined not to rotation in the intended direction when the plug is connected to a receptacle. The switch may be manual or automatic.

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Appleton, WI, United States of America

Brian J Hammers