Abstract: A turbomachine for use as a compressor has a tubular housing centered on an axis, a rotor at least generally centered on the axis in the housing, and bearings supporting the rotor in the housing for rotation about the axis. The rotor is formed by a small-diameter shaft extending along and centered on the axis, formed with at least one mounting collar, and carried by the bearings, and by a plurality of annular disks fitted axially together and formed with radially outwardly extending vanes. At least one of the disks is fitted with and secured to the mounting collar.

Abstract: A pressurized-gas cooler has a housing having a cylindrical side wall centered on an axis, an axially open outer end, and an axially closed inner end. A cover fitted to and closing the open outer end carries a bundle of tubes inside the housing between the housing ends. The tubes all extending parallel to one another at an angle of between 2° and 10° to a diametral plane including the housing axis such that the bundle is closer in a direction perpendicular to the plane to the side wall of the housing at one end of the housing than at the opposite end of the housing. Pressurized-gas inlet and outlet fittings open into the housing, with at least the gas inlet fitting opening into the housing to a side of the plane where the tube bundle at the respective end of the housing is more widely spaced.

Abstract: A pressurized-gas cooler has a housing having a cylindrical side wall centered on an axis, an axially open outer end, and an axially closed inner end. A cover fitted to and closing the open outer end carries a bundle of tubes inside the housing between the housing ends. The tubes all extending parallel to one another at an angle of between 2° and 10° to a diametral plane including the housing axis such that the bundle is closer in a direction perpendicular to the plane to the side wall of the housing at one end of the housing than at the opposite end of the housing. Pressurized-gas inlet and outlet fittings open into the housing, with at least the gas inlet fitting opening into the housing to a side of the plane where the tube bundle at the respective end of the housing is more widely spaced.