Patent ID: 6592451
Filing Date: 2003-07-15
Classification: F04D,F24F

Abstract:
A fan unit comprising:a fan blower configured to emit air in a plurality of directions in an air flow plane; first and second guide surfaces disposed on a first side of the fan blower in the airflow plane, the first and second guide surfaces defining together, at least partially, the radially outer boundary of a first airflow path leading to a first airflow channel; third and fourth guide surfaces disposed on a second, opposite, side of the fan blower in the air flow plane, the third and fourth guide surfaces defining together, at least partially, the radially outer boundary of a second airflow path leading to a second airflow channel; first, second, third and fourth guide means each comprising the first, second, third and fourth guide surfaces, respectively; wherein the fan unit further comprises a first wall means on the first side of the fan blower, the first guide surface touching the first wall means at a first point and the second guide surface touching the first wall means at a second point displaced from the first point, and the fan unit comprises a second wall means on a second side of the fan blower, the third guide surface touching the second wall means at a third point and the fourth guide surface touching the second wall means at a fourth point displaced from the third point.