| 摘要 |
Getter pump comprising a casing (21, 21'), whose shape is a solid of revolution with a revolution axis (24), and a plurality of getter cartridges (22, 23) mounted within said getter pump casing (21, 21'), each cartridge (22, 23) comprising a linear central support (221, 231) and spaced getter elements mounted on said linear central support (221, 231), a plane containing a linear central support (221, 231) and parallel to the revolution axis (24) being defined a getter cartridge orientation plane, and a plane orthogonal to the revolution axis (24) and intersecting the midpoint of a linear central support (221, 231) being defined a getter cartridge positioning plane (222, 232), the angles (α, α') formed by said positioning planes (222, 232) with the linear central supports (221, 231) being equal to or less than 30°. |
