BLDC hair dryer equipment.Claims for hair dryers and suction devices

　　1. A hair dryer, comprising a shell, wherein the shell is equipped with an air inlet, and air enters from the air inlet; A motor located inside the casing; An axial flow fan driven by the motor rotates along a fan axis and generates airflow; A blowing pipe connected to the shell and equipped with an air outlet, wherein the airflow is blown out from the air outlet through a duct for guiding the airflow towards the air outlet; The feature is that the shell and the blowing duct have an airflow channel, which includes an upstream area from the air inlet to the axial fan and a downstream area from the axial fan to the air outlet. The motor is set in the upstream area, and the culvert is set in the downstream area.

　　2. The hair dryer according to claim 1, characterized in that the air inlet, the motor, the axial fan, and the culvert are arranged longitudinally in sequence.

　　3. The hair dryer according to claim 1, characterized in that the projection of the air inlet and the air outlet on a plane perpendicular to the fan axis at least partially overlaps.

　　4. The hair dryer according to claim 1, characterized in that the airflow channel comprises several passing surfaces perpendicular to the direction of airflow flow, and the minimum area of the passing surface in the upstream area is greater than the area of the rotating surface formed by the rotation of the blades of the axial flow fan.

　　5. The hair dryer according to claim 4, characterized in that the upstream area includes a surrounding area arranged around the motor, and the ratio of the minimum area of the surrounding area to the area of the rotating surface formed by the rotation of the blades of the axial flow fan ranges from 1.5 to 2.5.

　　6. The hair dryer according to claim 4, characterized in that the upstream region includes a transition region longitudinally located between the motor and the axial fan, and the inner wall of the shell where the transition region is located is a smooth surface.

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