Fan device and aircraft having the same
A fan device includes: a fan including a plurality of blades each extending in a radial direction relative to a rotation axis, the fan being configured to rotate about the rotation axis and generate an airflow; a rotor core provided outside in the radial direction of the fan; a stator core provided at a position facing the rotor core in the radial direction; a housing that forms an inner circumferential surface surrounding the fan about the rotation axis and that internally includes an accommodation space accommodating the rotor core and the stator core; and a compressor configured to compress air. The inner circumferential surface of the housing has a cylindrical surface and a nozzle surface whose diameter expands outward in the radial direction along the rotation axis in downstream in a flow direction of an airflow relative to the cylindrical surface.
1. A fan device comprising:
a fan including a plurality of blades each extending in a radial direction relative to a rotation axis, the fan being configured to rotate about the rotation axis and generate an airflow;
a rotor core provided outside in the radial direction of the fan;
a stator core provided at a position facing the rotor core in the radial direction;
a housing that forms an inner circumferential surface surrounding the fan about the rotation axis and that internally includes an accommodation space accommodating the rotor core and the stator core; and
a compressor configured to compress air,
wherein the inner circumferential surface of the housing has a cylindrical surface and a nozzle surface whose diameter expands outward in the radial direction along the rotation axis in downstream in a flow direction of an airflow relative to the cylindrical surface,
wherein the housing internally defines a cooling flow path configured to guide compressed air from the compressor to the accommodation space and a housing flow path configured to guide compressed air from the compressor to a boundary air outlet formed in a vicinity of a boundary between the cylindrical surface and the nozzle surface, and
wherein the boundary air outlet is oriented in a direction to blow compressed air along the nozzle surface in the flow direction.
2. The fan device according to claim 1 ,
wherein the housing flow path guides compressed air to a rear edge air outlet formed in a rear edge in the flow direction of the nozzle surface, and
wherein the rear edge air outlet is oriented in a direction to blow compressed air in the flow direction.
3. The fan device according to claim 1 further comprising:
a boss that pivotably supports the fan about the rotation axis; and
a support member that supports the boss to the housing,
wherein the support member internally defines a communication flow path configured to guide compressed air from the housing flow path to the boss,
wherein the boss internally defines a boss flow path configured to guide compressed air to a boss air outlet formed in an end face downstream in the flow direction from the communication flow path, and
wherein the boss air outlet is oriented in a direction to blow compressed air in the flow direction.
4. The fan device according to claim 1 , wherein the cooling flow path and the housing flow path are independent of each other.
5. The fan device according to claim 1 , wherein the housing flow path communicates with the accommodation space.
6. The fan device according to claim 1 , wherein the housing is a duct.
7. The fan device according to claim 1 , wherein the housing is a wing of an aircraft.
8. An aircraft comprising the fan device according to claim 1 .