Impeller means the part of the fan that is imparting energy into the gas flow and is also known as the fan wheel

The invention concerns a propeller (12) fire-fighting fan (11) comprising a device (13) for guiding the air stream generated by the fan propeller.

The first end portion of the first vane segment is an adjacent most vane guide end portion in relation to an impeller of the fan.

Impeller means the part of the fan that is imparting energy into the gas flow and is also known as the fan wheel

Through this configuration, the propeller fan has blowing efficiency and stiffness, and the weight and material cost of the propeller fan can be reduced.

The invention concerns a propeller (12) fire-fighting fan (11) comprising a device (13) for guiding the air stream generated by the fan propeller.

An outdoor unit of a separate type air conditioner having a propeller fan (2) disposed in a casing (1) and a blow grille (4) disposed on the output side of the propeller fan (2).

Thus, the propeller fan improves its blowing performances (such as efficiencies or blowing noises).

Each propulsor includes a propulsor turbine and one of a fan and a propeller.

The built-in fan and auger motor produce noise when in operation.

　A propeller fan (1) comprises a boss (3) and a plurality of blades (5).

The first impeller is a centrifugal fan having a plurality of first impeller blades (11).

　A propeller fan (1) comprises a boss (3) and a plurality of blades (5).

The first end portion of the first vane segment is an adjacent most vane guide end portion in relation to an impeller of the fan.

The blower means may only consist of an impeller without the usual blower housing.