Patent ID: 9636617
Date: 2017-05-02
CPC Classifications: B01D,F04D,F24F

Claim:
1. An air purifier device, comprising: a fan arranged to produce an air flow through the air purifier device, a fan duct for guiding the air flow produced by the fan, the fan duct extending in an upright direction of the air purifier device, an air intake arranged below a lower end of the fan duct, and an exhaust arranged at an upper end of the fan duct so as to exhaust purified air in an upward direction from the air purifier device when the air purifier device is in use, wherein the fan duct flares outward in the radial direction of the fan duct along a direction from an intermediate portion of the fan duct towards the lower end and the fan duct flares outward in the radial direction of the fan duct along a direction from the intermediate portion of the fan duct towards the upper end, and wherein the fan includes blades having a height that is substantially the same as a height of the intermediate portion, so that the blades of the fan in the fan duct do not protrude above or below the intermediate portion in the upright direction.