Linear motor for use in linear compressor, has magnet arranged in internal core such that internal core and movable body implement linear to and fro moving movement, where gap is formed between magnet and external core

摘要

The motor has a solenoid (10) wound in a housing (2), and an external core (20) arranged in the housing. An internal core (40) is suitable to implement a linear to and fro moving movement together with a movable body (30) e.g. piston, and has a length that is larger than that of the external core. A magnet (50) is arranged in the internal core in such a manner that the internal core and the body implement the movement. A gap is formed between the magnet and the external core.