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US 11,141,808 B2Granted
Fume extractor for welding applications
AssigneeIllinois Tool Works Inc.
InventorsPeter Donald Mehn, Allan Thomas Hilbert
Life of this patent
Estimating the term…
Abstract
A welding system having a welding power supply coupled to a fume extractor is provided. The fume extractor may be coupled to control circuitry configured to operate the welding power supply. The control circuitry may be configured to begin, terminate or modify the operation of the fume extractor prior to the establishment of a welding arc, after the termination of the welding arc, or both. The control circuitry may be further configured to modify the operation of the fume extractor based upon a type of welding process used.
Claims11
A system comprising:
- a fume extractor configured to be disposed adjacent to a welding application for extracting fumes produced during welding;
- and
- control circuitry configured to:
- command the fume extractor to operate at a first speed to draw in air at a first rate for a predetermined time in response to commencement of a welding operation and prior to establishment of the welding arc;
- command the fume extractor to transition from operation at the first speed to operation at a second speed to draw in air at a second rate in response to depression of a trigger of a welding torch for establishing a welding arc and while the welding arc is ongoing;
- and
- command the fume extractor to transition from operation at the second speed to operation at the first speed in response to a release of the trigger for terminating the welding arc and after termination of the welding arc until the beginning of a subsequent welding operation.
4 more elements
A method comprising:
- controlling a fume extractor configured to be disposed adjacent to a welding application for extracting fumes produced during an arc welding operation via control circuitry, wherein controlling the fume extractor comprises:
- commanding, in response to depression of a trigger of a welding torch, the fume extractor to begin operation to draw in air at a first speed for at least a first predetermined time prior to establishment of a welding arc;
- commanding, after expiration of the first predetermined time, the fume extractor to transition from operation at the first speed to operation at a second speed to draw in air at a second rate while the welding arc is ongoing;
- commanding, in response to a release of the trigger, the fume extractor to continue operation to draw in air for at least a second predetermined time following extinguishing of the welding arc;
- and
- commanding, in response to expiration of the second predetermined time, the fume extractor to transition from operation at the second speed to operation at operation at the first speed.
3 more elements
Dependencies are inferred from the claim text.