Motor compressor and cooling apparatus using the same

A motor compressor containing a motor element and a compression element which is driven by a rotating shaft connected to the motor element in a closed vessel, wherein

• the motor element is constituted of a stator having a stator core that contacts, and is fixed to, an internal wall of the closed vessel, and a rotator having a magnetic substance, and the rotator is attached to the rotating shaft and rotatably supported in the inside of the stator;
• wherein Hmg<Ho is satisfied when Ho is a dimension representing the total length of the core measured in a direction parallel to the axis of the rotating shaft, and Hmg is a dimension codirectional with Ho and representing a length of the magnetic substance.

A motor compressor comprising a motor element and a compression element which is driven by a rotating shaft connected to the motor element in a closed vessel, wherein

• the motor element is constituted of a stator having a stator core, a portion of the peripheral area of which contacts and is fixed to an internal wall of the closed vessel, and a rotator having a magnetic substance, and the rotator is attached to die rotating shaft and rotatably supported in the inside of the stator;
• wherein H<Ho and Hmg<H are satisfied when Ho is a dimension representing the total length of the core measured in a direction parallel to the axis of the rotating shaft, H is a dimension codirectional with Ho and representing the portion of the core that contacts and is fixed to the internal wall of the closed vessel, and Hmg is a dimension codirectional with Ho and representing the length of the magnetic substance.