Abstract: A top-blowing lance nozzle is configured to freely switch an adequate expansion condition so as to control an oxygen-blowing amount and a jetting velocity independently of each other without requiring a plurality of lance nozzles or a mechanically movable part. A lance nozzle is configured to blow refining oxygen to molten iron charged in a reaction vessel while a gas is blown from a top-blowing lance to the molten iron. One or more blowing holes for blowing a working gas are on an inner wall side surface of the nozzle, at a site where the lance nozzle has a minimum cross-sectional area in a nozzle axis direction or at a neighboring site of the site.

Abstract: An outdoor unit for an air conditioning device includes a heat exchanger including (i) heat transfer tubes arranged with a space therebetween and each having one end connected to a refrigerant tube, and (ii) fins extending from the heat transfer tubes; first and second protective members each having (i) a flat plate that covers a respective end portion of the heat transfer tubes and an endmost fin that is located nearest the end portions of the heat transfer tubes, and (ii) a protrusion that protrudes from the flat plate toward the space between the heat transfer tubes near the end portions of the heat transfer tubes; first and second cover members that cover a respective flat plate; and a housing having an inner wall abutting the first cover member and an inner wall abutting the second cover member.

Abstract: An outdoor unit for an air conditioning device includes a heat exchanger including (i) heat transfer tubes arranged with a space therebetween and each having one end connected to a refrigerant tube, and (ii) fins extending from the heat transfer tubes; first and second protective members each having (i) a flat plate that covers a respective end portion of the heat transfer tubes and an endmost fin that is located nearest the end portions of the heat transfer tubes, and (ii) a protrusion that protrudes from the flat plate toward the space between the heat transfer tubes near the end portions of the heat transfer tubes; first and second cover members that cover a respective flat plate; and a housing having an inner wall abutting the first cover member and an inner wall abutting the second cover member.