Heat dissipation apparatus and electronic device incorporating same

An electronic device comprising:

• a casing defining one or more air intakes and one or more exhaust vents therein;
• a circuit board arranged in the casing, wherein the circuit board has a plurality of electronic component mounted thereon;
• and
• a heat dissipation apparatus mounted in the casing, the heat dissipation comprising:
• a centrifugal fan located at a side of the circuit board, the centrifugal fan comprising a housing and an impeller rotatably mounted in the housing, the housing defining an air inlet and an air outlet therein, the air outlet facing the one or more exhaust vents of the casing;
• a fin assembly located between the air outlet of the centrifugal fan and the one or more exhaust vents of the casing, the fin assembly comprising a plurality of spaced fins;
• a heat pipe comprising a condensing section thermally connected to the fin assembly and an evaporating section thermally connected to one of the electronic components;
• and
• an air guiding plate extending from the air outlet of the centrifugal fan toward a side of the housing of the centrifugal fan, the air guiding plate having a first end adjacent to the air outlet and a second end far from the air outlet, the air guiding plate dividing an inner space of the casing into a drawing passage and an exhaust passage, the one or more air intakes communicating the drawing passage with an outside of the casing for allowing airflow into the drawing passage, the one or more exhaust vents communicating the exhaust passage with the outside of the casing for allowing airflow out of the casing, the electronic components being located in the drawing passage, the centrifugal fan and the fin assembly being located in the exhaust passage, wherein in operation of the heat dissipation apparatus, airflow in the drawing passage is guided by the air guiding plate to circulate past the second end of the air guiding plate and enter the exhaust passage.