Patent ID: 8672650

Claim:
A cooling fan comprising: a housing including a support portion, a cover portion and a lateral wall portion, with the lateral wall portion disposed between the cover portion and the support portion, with the lateral wall portion, the support portion and the cover portion defining a compartment, and with the lateral wall portion having at least one lateral air inlet and at least one lateral air outlet penetrating through the lateral wall portion and communicating with the compartment; and a motor mounted inside the compartment of the housing and containing a stator and an impeller, with the impeller rotatable mounted about a rotatable axis to the stator, with the impeller further containing a hub with a top and a plurality of blades with the top facing the cover portion, wherein the top is intermediate the cover portion and the stator, is parallel to the cover portion, and is perpendicular to the rotatable axis of the impeller, with each blade mounted to the top of the hub and axially extending from the top toward the cover portion, with the at least one lateral air inlet and the at least one lateral air outlet in the lateral wall extending to the cover portion, with the top and the cover portion delimiting a lateral flow path parallel to the cover portion in the compartment from the at least one lateral air inlet through the at least one lateral air outlet, with the at least one lateral air inlet and the at least one lateral air outlet aligned in a plane perpendicular to the rotatable axis, and with each blade being contained in the lateral flow path, with the motor mounted outside of the lateral flow path.