Patent ID: 7352580

Claim:
A CPU cooler comprising a heat-conducting unit and a heat-dissipating unit, said heat-conducting unit composed of a heat-conducting block, a heat-conducting piping, an inflow pipe and an outflow pipe, said heat-conducting piping disposed in the interior of said heat-conducting block for making liquid to flow therethrough, said heat-conducting piping having its inflow port connected with said inflow pipe and its outflow port connected with said outflow pipe, said inflow port positioned lower than said outflow port, said heat-dissipating unit having one end communicating with said outflow pipe and the other end communicating with said inflow pipe, said heat-dissipating unit is composed of a cooling pipe and a plurality of cooling fins, said cooling fins spaced apart equidistantly and combined on the circumferential edge of said cooling piping, said cooling piping of said heat-dissipating unit is an accommodating chamber having one end connected with said outflow pipe and the other end connected with said inflow pipe, and the sectional area of said accommodating chamber is larger than that of said outflow pipe and said inflow pipe, said heat-dissipating unit dissipating the heat and lowering the temperature of said liquid, said liquid flowing through said heat-conducting block to be heated and vaporized, the vapor obliquely flowing through said heat-conducting piping, said vapor then condensed into liquid by said heat-dissipating unit and flowing back to said heat-conducting unit, able to incessantly repeat the cycle of heat dissipation and temperature reduction.