Patent ID: 7205500

Claim:
A non-consumable electrode welding torch, comprising: a torch body; a non-consumable electrode fixed inside the torch body so as to project outward from the torch body; a gas supply mechanism that supplies a shield gas through a space inside the torch body to a welding section formed at a tip of the non-consumable electrode; wherein the gas supply mechanism includes, around the non-consumable electrode; a double annular gas space including an outer gas space and an inner gas space divided by a partition wall; a gas supply path connected to the outer gas space for introducing the gas from outside of the torch body; a plurality of orifices located at regular intervals in the partition wall between the outer gas space and the inner gas space; a gas outlet opening provided in the inner gas space, oriented in a direction aligned with a projecting direction of the non-consumable electrode from the torch body, which is different from a blowing direction of the orifices; and a filter located at the outlet opening.