A cross flow fan to be incorporated into an aircraft comprises a cross flow fan rotor to be positioned in an aircraft, a drive arrangement for the cross flow fan rotor, and a plurality of vanes positioned downstream of the cross flow fan rotor. An aircraft is also disclosed.

A centrifugal fan impeller includes a front endring, a rear endring, and a plurality of blades coupled between the front and the rear endrings. At least one blade of the plurality of blades includes a blade span extending between the front endring and the rear endring, a leading edge, and a trailing edge. The at least one blade further includes a first elliptical cross-sectional profile extending between the leading and the trailing edges.

A centrifugal fan impeller includes a front endring, a rear endring, and a plurality of blades coupled between the front and the rear endrings. At least one blade of the plurality of blades includes a blade span extending between the front endring and the rear endring, a leading edge, and a trailing edge. The at least one blade further includes a first elliptical cross-sectional profile extending between the leading and the trailing edges.

An impeller element includes a plurality of blades disposed along an outer circumference of a circular support plate. Each blade is divided into a plurality of blade sections in a rotational axis direction. At least one of the divided blade sections as a long-chord blade section is configured such that a chord as a line segment connecting a blade outer-circumferential edge and a blade inner-circumferential edge of the blade in a cross section perpendicular to a rotational axis of the blade has a greater length than a chord of another one of the blade sections as a short-chord blade section. The blade inner-circumferential edge of the at least one long-chord blade section having the longer chord protrudes toward the inner circumferential side, relative to the blade inner-circumferential edge of the at least other one of the blade sections as the short-chord blade section having the shorter chord.

An impeller element includes a plurality of blades disposed along an outer circumference of a circular support plate. Each blade is divided into a plurality of blade sections in a rotational axis direction. At least one of the divided blade sections as a long-chord blade section is configured such that a chord as a line segment connecting a blade outer-circumferential edge and a blade inner-circumferential edge of the blade in a cross section perpendicular to a rotational axis of the blade has a greater length than a chord of another one of the blade sections as a short-chord blade section. The blade inner-circumferential edge of the at least one long-chord blade section having the longer chord protrudes toward the inner circumferential side, relative to the blade inner-circumferential edge of the at least other one of the blade sections as the short-chord blade section having the shorter chord.

The length of a cross flow fan in the rotational axis direction is longer than the length of an air outlet in the longitudinal direction, and the cross flow fan has a fan extension positioned beyond each end of the air outlet in the rotational axis direction. Deflectors are provided in the air-conditioning apparatus main body. An outlet airflow blown from each fan extension of the cross flow fan impinges upon a corresponding one of the deflector. Furthermore, the shape of blade portions of the fan extensions of the cross flow fan and the shape of blade portions opposing the air outlet are different from each other. The wind speed of the outlet airflow blown from the blade portion is lower than the wind speed of an outlet airflow blown from the blade portion.

The length of a cross flow fan in the rotational axis direction is longer than the length of an air outlet in the longitudinal direction, and the cross flow fan has a fan extension positioned beyond each end of the air outlet in the rotational axis direction. Deflectors are provided in the air-conditioning apparatus main body. An outlet airflow blown from each fan extension of the cross flow fan impinges upon a corresponding one of the deflector. Furthermore, the shape of blade portions of the fan extensions of the cross flow fan and the shape of blade portions opposing the air outlet are different from each other. The wind speed of the outlet airflow blown from the blade portion is lower than the wind speed of an outlet airflow blown from the blade portion.

Disclosed is a cross-flow fan including a fan rotor and a housing. The cross-flow fan has a blow-out path defined by first and second extension wall portions and two sidewalls. The first extension wall portion continuously extends from a tongue portion of the housing to the blow-out port. The second extension wall portion faces the first extension wall portion. The two sidewalls are respectively provided at axial ends of the fan rotor. The two sidewalls are formed such that the blow-out path has a narrowed portion whose cross-sectional area decreases as its cross-sectional shape changes from a rectangular shape to a trapezoidal shape from an upstream side toward a downstream side thereof, the trapezoidal shape having a portion near the second extension wall portion smaller in width than a portion near the first extension wall portion.

Disclosed is a cross-flow fan including a fan rotor and a housing. The cross-flow fan has a blow-out path defined by first and second extension wall portions and two sidewalls. The first extension wall portion continuously extends from a tongue portion of the housing to the blow-out port. The second extension wall portion faces the first extension wall portion. The two sidewalls are respectively provided at axial ends of the fan rotor. The two sidewalls are formed such that the blow-out path has a narrowed portion whose cross-sectional area decreases as its cross-sectional shape changes from a rectangular shape to a trapezoidal shape from an upstream side toward a downstream side thereof, the trapezoidal shape having a portion near the second extension wall portion smaller in width than a portion near the first extension wall portion.

A blower, including: a motor; a tubular wind wheel, a mounting plate and a connection part. The tubular wind wheel includes a plurality of blades and a plurality of connection rings. The plurality of blades is connected to each other to form an elongated hollow body. The connection part is disposed in the elongated hollow body. The mounting plate is disposed outside one end of the tubular wind wheel. The motor is disposed on the mounting plate. At least a part of the motor extends into the elongated hollow body to connect to the connection part.