Bladeless fans with a nozzle

Abstract

A bladeless fan is provided. In one embodiment, a bladeless fan is provided having a base having an impeller disposed therein, a support rod extending from the base, and a fan arm movably coupled to the support rod at a connection joint. The impeller and the support rod can be axially aligned along a central axis of the base. At least a portion of the connection joint can be horizontally aligned with the central axis of the base. The fan arm can have nozzles disposed therein which are horizontally offset from the central axis of the base.

What is claimed is: 
     
         1 . A bladeless fan, comprising:
 a base having an impeller disposed therein;   a support rod extending from the base, the impeller and the support rod being axially aligned along a central axis of the base; and   a fan arm movably coupled to the support rod at a connection joint, the fan arm having first and second fan arm portions in which first and second nozzles are disposed, respectively;   wherein the first and second nozzles are horizontally offset from the central axis of the base; and   wherein at least a portion of the connection joint is horizontally aligned with the central axis of the base.   
     
     
         2 . The bladeless fan of  claim 1 , wherein a motor configured to rotate the impeller is disposed within the base, the motor being axially aligned with the impeller along the central axis of the base. 
     
     
         3 . The bladeless fan of  claim 1 , wherein a diffuser configured to evenly distribute airflow is disposed within the base, the diffuser being axially aligned with the impeller along the central axis of the base. 
     
     
         4 . The bladeless fan of  claim 1 , wherein the support rod is connected to the base at a first end and extends outwardly therefrom along the central axis of the base, terminating at a second end opposite of the first end. 
     
     
         5 . The bladeless fan of  claim 4 , wherein a distance between the first and second ends of the support rod is longer than a distance between the connection joint and an end of the fan arm. 
     
     
         6 . The bladeless fan of  claim 4 , wherein a distance between the first and second ends of the support rod is longer than a maximum length of the first fan arm portion or the second fan arm portion. 
     
     
         7 . The bladeless fan of  claim 4 , wherein a distance between the first and second ends of the support rod is longer than half of a total length of the fan arm. 
     
     
         8 . The bladeless fan of  claim 4 , wherein a distance between the first and second ends of the support rod is longer than a distance between a surface on which the base is positioned and the first end of the support rod. 
     
     
         9 . The bladeless fan of  claim 4 , wherein the connection joint is movable between the first and second ends of the support rod. 
     
     
         10 . The bladeless fan of  claim 1 , wherein the support rod comprises an inner lumen, and wherein first and second fan lumens in fluid communication are formed in the first and second nozzles, respectively. 
     
     
         11 . The bladeless fan of  claim 9 , wherein a maximum circumference of the inner lumen is greater than a maximum circumference of the first and second fan lumens. 
     
     
         12 . The bladeless fan of  claim 9 , wherein the connection joint comprises a branched airway in fluid communication with the inner lumen and the first and second fan lumens. 
     
     
         13 . The bladeless fan of  claim 11 , wherein a maximum circumference of the branched airway is equal to a maximum circumference of the inner lumen, and wherein a minimum circumference of the branched airway is equal to a maximum circumference of the first and second fan lumens. 
     
     
         14 . A bladeless fan, comprising:
 a base having an impeller therein, an elongate support extending from the base and having an inner lumen configured to receive airflow from the impeller, and a fan arm movably coupled to the base and having first and second fan arm portions positioned on opposite sides thereof and configured to receive airflow flowing through the inner lumen in the elongate support, the fan arm extending along a longitudinal axis that is offset from a longitudinal axis of the elongate support and a longitudinal axis of the base.   
     
     
         15 . The bladeless fan of  claim 14 , wherein the fan arm has a length that is about two times greater than a length of the elongate support. 
     
     
         16 . The bladeless fan of  claim 14 , wherein the fan arm has a length that is about three times greater than a length of the base. 
     
     
         17 . The bladeless fan of  claim 14 , wherein the elongate support is configured to be adjustable in length such that a length of the elongate support is between about 50 percent and about 100 percent of a length of the fan arm. 
     
     
         18 . The bladeless fan of  claim 14 , wherein the first and second fan arm portions each comprise a nozzle opening, each nozzle opening having a length that is about 90 percent of a length of the respective fan arm portion. 
     
     
         19 . The bladeless fan of  claim 14 , wherein a maximum diameter of the inner lumen is approximately two times greater than a maximum diameter of first or second fan lumens formed within the first or second fan arm portions, respectively. 
     
     
         20 . The bladeless fan of  claim 14 , wherein a length of the elongate support is about five times greater than a maximum diameter of the inner lumen of the elongate support.