Heat dissipation apparatus for sewing machines

A cooling module for used in a sewing machine, the sewing machine comprising a forepart and an extension shaft extended through the forepart for rotation relative to the forepart, said cooling module comprising:

• a sleeve secured to the extension shaft;
• a stator seat secured on the forepart, the stator seat having a first guide end facing the forepart, an opposing second guide end comprising an axial passage, and an inner space between the first guide end and the second guide end for accommodating a stator set, the axial passage dimensioned to receive part of the sleeve;
• a first fan mounted on the sleeve adjacent to the forepart for rotation together with the extension shaft, wherein the stator seat further comprises a plurality of first air inlets arranged to draw air into the stator seat toward the forepart when the first fan is rotation, and
• a wheel securely mounted on the sleeve facing the second side of the stator seat, the wheel comprising a second fan adjacent to the closed side of the chamber, the wheel further comprising a plurality of second air inlets arranged to draw air through the second air inlets and the second fan to form an additional airflow to cool the stator seat.