Ventilator having an optimum air box

Abstract

A ventilator having an optimum air box includes an outer hood, an air box, and a fan motor. The air box is mounted in the outer hood and is provided with a receiving zone which is extended forward, so that the smoke suction port of the outer hood and the fan motor are displaced forward and are located above the range exactly, so that the oily smoke produced from the range is sucked into the smoke suction port of the outer hood entirely and completely, thereby greatly enhancing the ventilating effect.

What is claimed is:  
     
         1 . A ventilator having an optimum air box, comprising an outer hood, an air box, and a fan motor, wherein: 
 the outer hood has a bottom having a front side formed with a smoke suction port, the outer hood has a front side formed with a front hood plate;    the air box is mounted in the outer hood, the air box has a front side provided with a receiving zone which is extended to a lower portion of an inner wall of the front hood plate of the outer hood; and    the fan motor is mounted on the front side of the air box and is located above the smoke suction port of the outer hood.    
     
     
         2 . The ventilator having an optimum air box in accordance with  claim 1 , wherein the outer hood has a top having a rear side formed wit i a smoke drainage port, and the air box has a top plate having a rear side formed with an air outlet aligning with the smoke drainage port of the outer hood.  
     
     
         3 . The ventilator having an optimum air box in accordance with  claim 1 , wherein the air box has a top plate having a front side formed with a receiving seat for receiving the fan motor.  
     
     
         4 . The ventilator having an optimum air box in accordance with  claim 1 , wherein the air box has a bottom plate having a front side formed with an air inlet aligning with the smoke suction port of the outer hood.  
     
     
         5 . The ventilator having an optimum air box in accordance with  claim 1 , wherein the fan motor includes a rotation vane having a front side received in the receiving zone of the air box.  
     
     
         6 . The ventilator having an optimum air box in accordance with  claim 1 , wherein the receiving zone of the air box has a front edge formed with a chamfered corner.  
     
     
         7 . The ventilator having an optimum air box in accordance with  claim 1 , wherein the air box is integrally formed with the receiving zone which is extended forward.  
     
     
         8 . The ventilator having an optimum air box in accordance with  claim 1 , wherein the air box and the receiving zone are separated from each other and are formed by two separate plates.  
     
     
         9 . The ventilator having an optimum air box in accordance with  claim 1 , wherein the smoke suction port of the outer hood and the fan motor are displaced forward and are located at the front side of the outer hood.  
     
     
         10 . The ventilator having an optimum air box in accordance with,  claim 1 , wherein the front side of the air box is provided with two receiving zones, the air box has a top plate having a front side formed with two receiving seats and a rear side formed with an air outlet, and the air box has a bottom plate having a front side formed with two air inlets.  
     
     
         11 . The ventilator having an optimum air box in accordance with  claim 1 , wherein the receiving zone of the air box has a front side having a top portion formed with a concave shape so as to mate with the configuration of the front hood plate.  
     
     
         12 . The ventilator having an optimum air box in accordance with  claim 1 , wherein the receiving zone of the air box has a front side having a top portion formed with an oblique shape so as to mate with the configuration of the front hood plate.