Methods and apparatus to convert welding-type power to welding-type power and resistive preheating power
AssigneeIllinois Tool Works Inc.
InventorJoseph Feldhausen
Life of this patent
Estimating the term…
Abstract
An example welding accessory includes: a weld input configured to receive first welding-type power; and power conversion circuitry configured to: convert a first portion of the first welding-type power to second welding-type power; output the second welding-type power to a weld circuit; convert a second portion of the first welding-type power to preheating power; and output the preheating power to a preheater.
Claims21
A welding accessory configured to receive first DC welding-type power from a welding power source and comprising:
- a weld input configured to receive the first DC welding-type power from the welding power source;
- and
- power conversion circuitry configured to:
- convert a first portion of the first DC welding-type power received from the welding power source to second DC welding-type power having a welding voltage;
- output the second DC welding-type power to a weld circuit portion of a welding torch;
- convert a second portion of the first DC welding-type power received from the welding power source to preheating power having a preheating voltage different than the welding voltage;
- and
- output the preheating power at the preheating voltage to a preheater portion of the welding torch.
A welding system, comprising:
- first power conversion circuitry configured to convert power to first DC welding-type power;
- second power conversion circuitry configured to:
- convert a first portion of the first DC welding-type power to second DC welding-type power;
- and
- output the second welding-type power to a weld circuit;
- third power conversion circuitry configured to:
- convert a second portion of the first DC welding-type power to preheating power concurrently with the conversion of the first portion of the first DC welding-type power to the second DC welding-type power;
- and
- output the preheating power to a preheater;
- and
- control circuitry configured to control the second power conversion circuitry and the third power conversion circuitry.
A welding accessory configured to convert first DC welding-type power to second DC welding-type power and preheating power, and comprising:
- a weld input configured to receive the first DC welding-type power from a welding power source;
- and
- power conversion circuitry configured to:
- convert a first portion of the first DC welding-type power received from the welding power source to the second DC welding-type power;
- output the second DC welding-type power to a welding torch via a first output terminal;
- convert a second portion of the first DC welding-type power received from the power supply to the preheating power;
- and
- output the preheating power via a second output terminal to a preheater portion of the welding torch.
Dependencies are inferred from the claim text.