Patent ID: 7661465

Claim:
A cooling system for removing heat from a heat generating component, comprising: a base comprising a lower portion and a higher portion surrounding the lower portion, the lower portion and the higher portion cooperatively defining a space receiving working fluid therein, the space of the base comprising a middle cavity, two chambers located at two opposite ends of the middle cavity and adjacent to two latitudinal sides of the base, and two narrow channels each located between and communicating a corresponding chamber with the middle cavity; a wick structure received in the space of the base, the wick structure comprising a main portion received in the middle cavity of the space, two neck portions received in the narrow channels of the space, and two end portions received in the chambers of the space; and a heat sink mounted on the base, the heat sink defining an evaporating passage and two condensing passages located at two opposite sides of the evaporating passage, the evaporating passage being located above and connecting with the main portion of the wick structure, the two condensing passages being respectively located above and connecting with the two end portions of the wick structure, top and bottom surfaces of each of the narrow neck portions of the wick structure connecting with a bottom surface of the heat sink and a top surface of the lower portion of the base, respectively, the passages being in fluid communication with the wick structure received in the base, cooperatively the wick structure and the passages defining a loop for circulating the working fluid therein, the working fluid in the main portion of the wick structure receiving heat and becoming vapor, the vapor flowing first to the evaporating passage and then condensing into liquid when flowing from the evaporating passage to the condensing passages, the liquid then flowing from the condensing passages back to the two end portions of the wick structure.