Gas injector and gas injection direction adjusting method

A gas injection direction adjusting method for a gas injector which includes:

• a nozzle main body having on its front end portion a nozzle for injecting gas;
• and
• a nozzle main body supporting section for supporting the nozzle main body, wherein:
• said nozzle main body includes first and second members, and displacing means for changing relative positions of the first and second members, and
• fixed state/unfixed state of the nozzle main body with respect to the nozzle main body supporting section is switched by a change in relative positions of the first and second members by the displacing means,
• said method comprising the steps of:
• inserting an adjusting rod from a gas injection opening of the nozzle so as to adjust a gas injection direction of the nozzle by a tip of the adjusting rod;
• and
• fixing the nozzle main body on the nozzle main body supporting section by changing relative positions of the first and second members.

A gas injector, comprising:

• a nozzle main body having on its front end portion a nozzle for injecting gas;
• and
• a nozzle main body storing section for supporting the nozzle main body so as to make an outward gas injection direction of the nozzle adjustable, wherein:
• said nozzle main body includes a nozzle base end portion and a nozzle displacing part which is displaceable with respect to the nozzle base end portion along a longitudinal direction of the nozzle,
• the nozzle base end portion and the nozzle displacing part are separated from one another by a rotation of one of the nozzle and the nozzle displacing part about an axis of the longitudinal direction;
• the nozzle base end portion and the nozzle displacing part make up a spherical portion which is supported in the nozzle main body storing section so as to make the gas injection direction adjustable;
• one of the nozzle base end portion and the nozzle displacing part has a groove portion for preventing rotation of one following rotation of the other, and
• the nozzle main body storing section has a projectile portion to be engaged with the groove portion.

A gas injection direction adjusting method for a gas injector which includes:

• a nozzle main body having on its front end portion a nozzle for injecting gas;
• and
• a nozzle main body storing section for supporting the nozzle main body so as to make a gas injection direction from the nozzle adjustable, wherein:
• said nozzle main body includes a nozzle base end portion and a nozzle displacing part which is displaceable with respect to the nozzle base end portion along a longitudinal direction of the nozzle, and
• the nozzle base end portion and the nozzle displacing part are separated from one another by a rotation of one of the nozzle and the nozzle displacing part about an axis of the longitudinal direction,
• said method comprising the steps of:
• adjusting the gas injection direction of the nozzle by a tip of an adjusting rod by inserting the adjusting rod from a gas injection opening of the nozzle;
• and
• fixing the nozzle main body on the nozzle main body storing section by separating the nozzle base end portion and the nozzle displacing part from one another by rotating one of the nozzle and the nozzle displacing part while the adjusting rod is being inserted in the nozzle.

A gas injector, comprising:

• a nozzle main body having on its front end portion a nozzle for injecting gas;
• and
• a nozzle main body supporting section for supporting the nozzle main body;
• wherein said nozzle main body includes first and second members, and a screw structure for changing relative positions of the first and second members with respect to each other,
• wherein the nozzle main body is in a fixed position with respect to the nozzle main body supporting section when the first and second members are in a first position offset from each other in a longitudinal direction of the nozzle main body, and
• wherein the nozzle main body is moveable with respect to the nozzle main body supporting section when the first and second members are in a second position proximate to each other in the longitudinal direction of the nozzle main body.

A gas injector, comprising:

• a nozzle main body having on its front end portion a nozzle for injecting gas;
• and
• a nozzle main body supporting section for supporting the nozzle main body;
• wherein said nozzle main body includes first and second members, and a cam structure for changing relative positions of the first and second members with respect to each other,
• wherein the nozzle main body is in a fixed position with respect to the nozzle main body supporting section when the first and second members are in a first position offset from each other in a longitudinal direction of the nozzle main body, and
• wherein the nozzle main body is moveable with respect to the nozzle main body supporting section when the first and second members are in a second position proximate to each other in the longitudinal direction of the nozzle main body.