| 摘要 |
A hermetically sealed DC motor-compressor unit comprises a compressor component, a DC motor component including a permanent magnet rotor and a stator, said stator having a plurality of phase-windings and transistor-switching elements for energizing the respective phase windings, reed switch means for controlling said transistor-switching elements, and a hermetically sealed casing enclosing therein the compressor component, the DC motor component and the reed switch means. Any time differences which may caused due to the deflection of the magnetic flux for operating the reed switches and due to the delay of the switching operation of the reed switches per se are compensated by adjusting the length of the shielding member and by adjusting the relative location between the reed switches and their respective magnets, respectively.
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