CANNED LINEAR MOTOR ARMATURE AND CANNED LINEAR MOTOR

摘要

A linear motor comprising a can which is of two-layer construction consisting of an inner can (2) and an outer can (3), these cans constituting an inner flow channel (7) between an armature winding (9) and the inner can (2), and an outer flow channel (8) between the inner and outer cans (2, 3). Provided in the vicinity of refrigerant supply port (5) in the cans (2, 3) are communication sections (7A, 8A) which establish communication between the inner and outer flow channels (7, 8) so that the refrigerant supplied from the refrigerant supply port (5) may flow branchingly into the inner and outer flow channels (7, 8). Thereby, addition of improvements to the refrigerant flow channels while using a conventional inert refrigerant provides a linear motor armature and linear motor with a high cooling capacity, capable of preventing deformation of cans.