Patent ID: 8629587
Filing Date: 2014-01-14
Classification: H02K

Abstract:
1. A water-cooling structure for electric motor, comprising: a motor main body having a rotor and a stator fitted around the rotor to form a sub-assembly; an enclosure having an outer side and an inner side, the outer side being provided with an outlet and an inlet, and the inner side defining a receiving space therein; a heat-dissipation base being fitted in the receiving space; the heat-dissipation base having an outer circumferential surface contacting with the inner side of the enclosure, a hollow chamber for receiving the sub-assembly of the rotor and stator therein, and at least one main flow passage provided on and extended along the outer circumferential surface and communicating with the outlet and the inlet, wherein the main flow passage has a first inner sidewall and an opposite second inner sidewall; and a vortex-forming section being provided between the first inner sidewall and the second inner sidewall of the main flow passage, and wherein the vortex-forming section includes a plurality of vortex-forming blocks; some of the vortex-forming blocks being sidewardly protruded from the first inner sidewall of the main flow passage toward the second inner sidewall while others being sidewardly protruded from the second inner sidewall toward the first inner sidewall, such that the vortex-forming blocks on the first inner sidewall and the second inner sidewall in the same main flow passage are arranged in staggered relation to one another; and each of the vortex-forming blocks having a first lateral side facing toward the first inner sidewall or the second inner sidewall.