Abstract: A heat dissipating fan includes a housing having a base and a sidewall coupled to the base. The sidewall defines a compartment. The housing further includes an air inlet, an air outlet, and a dust channel. The air inlet, the air outlet, and the dust channel are in communication with the compartment. A stator is coupled to the base of the housing. An impeller is rotatably coupled to the stator. A control element includes a driving circuit electrically connected to the stator and a rotating direction control circuit electrically connected to the driving circuit. In another embodiment, the heat dissipating fan includes a housing having a base and a lateral wall coupled to the base. The lateral wall defines a compartment. The lateral wall includes an air inlet and an air outlet both in communication with the compartment. The air inlet also acts as a dust channel.

Abstract: A heat dissipating fan includes a housing having a base and a sidewall coupled to the base. The sidewall defines a compartment. The housing includes an air inlet, an air outlet and a dust channel. The air outlet includes opposite first and second end edges located at a same straight side of the housing. The housing defines a first plane. The impeller includes a hub and several blades. The impeller defines a second plane. The compartment of the housing includes an air outlet section and a pressure accumulating section. The air outlet section is located between the first and second planes. The air outlet is located in the air outlet section. The dust channel extends in an angle with respect to the second plane. An impeller is coupled to the stator that is coupled to the base. A control element includes a driving circuit and a rotating direction control circuit.

Abstract: A heat dissipating system includes a housing having a compartment divided into first and second air channels by a partitioning board. The partitioning board includes an opening through which the first air channel is in communication with the second air channel. A driving unit is mounted in the first air channel. The driving unit includes a rotating shaft extending through the opening into the second air channel. A first impeller is mounted in the first air channel, coupled to the rotating shaft, and aligned with the opening. A second impeller is mounted in the second air channel, coupled to the rotating shaft, and aligned with the opening. The first and second impellers mounted in the first and second air channels are driven by the driving unit to simultaneously dissipate heat generated by electronic elements in the first and second air channels while having a simplified structure.

Abstract: A blower fan includes a housing having a lateral wall defining a compartment. The housing includes an air inlet and an air outlet both in communication with the compartment. An impeller mounted in the compartment includes a hub and blades mounted on the hub. A first plane including opposite first and second end edges in the air outlet is parallel to and spaced from a second plane including a center of the hub. The compartment of the housing includes an air outlet section and a pressure accumulating section on opposite sides of the second plane. The air outlet section is located between the first and second planes. The lateral wall of the housing includes at least one air guiding hole located in the pressure accumulating section. At least one air guiding tube includes an outlet end and an inlet end coupled to the at least one air guiding hole.

Abstract: A heat dissipating fan includes a housing having a base and a sidewall coupled to the base. The sidewall defines a compartment. The housing further includes an air inlet, an air outlet, and a dust channel. The air inlet, the air outlet, and the dust channel are in communication with the compartment. A stator is coupled to the base of the housing. An impeller is rotatably coupled to the stator. A control element includes a driving circuit electrically connected to the stator and a rotating direction control circuit electrically connected to the driving circuit. In another embodiment, the heat dissipating fan includes a housing having a base and a lateral wall coupled to the base. The lateral wall defines a compartment. The lateral wall includes an air inlet and an air outlet both in communication with the compartment. The air inlet also acts as a dust channel.

Abstract: A heat dissipating system includes a housing having a compartment divided into first and second air channels by a partitioning board. The partitioning board includes an opening through which the first air channel is in communication with the second air channel. A driving unit is mounted in the first air channel. The driving unit includes a rotating shaft extending through the opening into the second air channel. A first impeller is mounted in the first air channel, coupled to the rotating shaft, and aligned with the opening. A second impeller is mounted in the second air channel, coupled to the rotating shaft, and aligned with the opening. The first and second impellers mounted in the first and second air channels are driven by the driving unit to simultaneously dissipate heat generated by electronic elements in the first and second air channels while having a simplified structure.