Patent ID: 8220733
Filing Date: 2012-07-17
Classification: B02C

Abstract:
1. A water cooling paper shredder, comprising: a power management unit; and a shredding mechanism, wherein the shredding mechanism comprises a motor, a conveying mechanism and a pair of shredding rollers, the motor being powered by the power management unit, torque of the motor being transferred by the conveying mechanism to the pair of the shredding rollers, thus causing shredding action of the shredding rollers; a heat dissipation device is provided on the motor to conduct heat outside of the motor itself; wherein the motor comprises a stator portion on which said heat dissipation device is mounted and a rotator portion; wherein the heat dissipation device comprises a metal component, a plurality of conduits, a pump and at least one metal tank for storage of water; a chamber is defined inside the metal component and tightly connected with the stator portion; the conduits are communicated with the metal tank and to the chamber of the metal component so as to define a water circulation circuit; the pump is electrically coupled with the power management unit, and is located at any position of the water circulation circuit so as to provide power to the circuit; wherein the metal component comprises a plurality of elongated and hollow rods and a plurality of transversal and hollow rods communicating with the plurality of elongated rods respectively; all of the elongated rods are parallel one another and each of them is disposed in such way that they runs cross the stator portion; each transversal rod communicates with two adjacent elongated rods; the chamber is defined by all of the elongated and transversal rods together; the conduits communicates the chamber at two different locations thereon such that the circulation circuit is formed.