Bladeless ceiling fan

Abstract

A bladeless ceiling fan is disclosed herein including a housing, an airflow generating assembly and a flow-diverting mechanism. The housing is formed with a first and a second circular vent. The flow-diverting mechanism can distribute an airflow generated by the blade to the first circular vent and the second circular vent, and to control airflow volume entering the first circular vent and the second circular vent, respectively. The curved airflow guiding structure between the first and the second circular vent generate the Coanda Effect, resulting in airflow redirection and attachment to the curved surface. Air from the first and second circular vent flows along exterior curvature to converge into joint directional airflow. The flow-diverting mechanism can independently regulate the airflow volume entering the first and second guiding component, thereby controlling the airflow output from the first and second circular vent, and consequently adjusting the final airflow direction.

What is claimed is: 
     
         1 . A bladeless ceiling fan, comprising:
 a housing formed with a first circular vent and a second circular vent, wherein a curved airflow guiding structure is arranged between the first circular vent and the second circular vent;   an airflow generating assembly disposed within the housing, the airflow generating assembly comprises a blade and a fan motor driving the blade to generate airflow; and   a flow-diverting mechanism disposed within the housing, the flow-diverting mechanism is configured to distribute an airflow generated by the blade to the first circular vent and the second circular vent, and to control airflow volume entering the first circular vent and the second circular vent, respectively.   
     
     
         2 . The bladeless ceiling fan of  claim 1 , wherein the flow-diverting mechanism comprises an airflow guiding assembly and an airflow controlling assembly;
 the airflow guiding assembly surrounds the blade; the airflow guiding assembly comprises a first guiding component and a second guiding component; the first circular vent is arranged at an edge of the first guiding component, and the second circular vent is arranged at an edge of the second guiding component;   the airflow controlling assembly comprises a first controlling component and a second controlling component; the first controlling component is provided with a first opening and a second opening;   wherein the first controlling component and the second controlling component are configured to move relative to each other to open or close the first opening and the second opening; the first opening is in communication with the blade and the first guiding component, allowing the airflow from the blade to pass through the first guiding component; the second opening is in communication with the blade and the second guiding component, allowing the airflow from the blade to pass through the second guiding component.   
     
     
         3 . The bladeless ceiling fan of  claim 2 , wherein the first guiding component comprises a plurality of evenly distributed first guiding plates; adjacent first guiding plates form a first airflow passage;
 the first airflow passage has a curved shape to reduce air resistance; and/or   the second guiding component comprises a plurality of evenly distributed second guiding plates;   adjacent second guiding plates form a second airflow passage; the second airflow passage has a curved shape to reduce air resistance.   
     
     
         4 . The bladeless ceiling fan of  claim 2 , wherein the first controlling component and the second controlling component are circular in shape; the first controlling component is rotatable. 
     
     
         5 . The bladeless ceiling fan of  claim 4 , wherein the airflow controlling assembly further comprises a controlling motor; the first controlling component is driven by the controlling motor to move relative to the second controlling component; the second controlling component is fixed on the second guiding component. 
     
     
         6 . The bladeless ceiling fan of  claim 4 , wherein the second controlling component comprises a first baffle corresponding to the first opening and a second baffle corresponding to the second opening. 
     
     
         7 . The bladeless ceiling fan of  claim 2 , wherein the housing comprises a first shell, a middle shell and a second shell, wherein the first shell, the middle shell, and the second shell are connected in sequence; the first guiding component is fixed on the first shell; the curved airflow guiding structure is a curved surface of the middle shell; the second shell is provided with an air inlet. 
     
     
         8 . The bladeless ceiling fan of  claim 7 , further comprising an air filter, the air filter is fixed in a center of the second shell. 
     
     
         9 . The bladeless ceiling fan of  claim 8 , further comprising sensors to monitor pollutants and allergens. 
     
     
         10 . The bladeless ceiling fan of  claim 1 , further comprising a communication chip for remote control of the fan motor and the airflow controlling assembly to adjust speed and airflow direction.