Heat exchange system and rotor having the same

A kneading or extruding rotor including a heat exchange system comprising:

• a rotor body having an outer surface in contact with a heat-exchange object;
• a heat-exchange chamber in said body, a heat transfer medium flowing in said heat-exchange chamber;
• an inlet formed on at least one end of said body with a diameter less than that of said heat-exchange chamber;
• a main tube, the heat transfer medium flowing in or flowing out of said main tube, said main tube being insertably disposed in said heat-exchange chamber through said inlet and having a predetermined diameter so that a given space is ensured between said inlet and said main tube;
• and
• branch tubes mounted on the outer surface of said main tube, each of said branch tubes having an opening on the top through which said main tube communicates with said heat-exchange chamber, said branch tubes being flexible and resilient, thereby being capable of deforming when passing through the space when said main tube is inserted or removed, and substantially returning to its original form.