Coating device for processing a liquid into a fine mist and spraying the fine mist towards a workpeice

Abstract

In a coating device using mist-blowing technique, a primary spray ( 3 ) injects a liquid to produce original mist. Supplied with the original mist, a mist box ( 2 ) produces a fine mist having a very small particle size. A secondary spray ( 5 ) is connected to the mist box and sprays the fine mist towards a workpiece.

1 . A coating device comprising: 
 a primary spray for injecting a liquid to produce original mist;    a mist box connected to the primary spray and supplied with the original mist for producing a fine mist having a very small particle size; and    a secondary spray connected to the mist box for spraying the fine mist towards a workpiece.    
   
   
       2 . The coating device according to  claim 1 , wherein the secondary spray comprising: 
 a sucking portion connected to the mist box for sucking the fine mist from the mist box;    an accelerating portion connected to the sucking portion for accelerating the flow rate of the fine mist; and    a blowing portion connected to the accelerating portion for blowing the fine mist towards the workpiece.    
   
   
       3 . The coating device according to  claim 2 , wherein the accelerating portion has a compressed air inlet for introducing compressed air.  
   
   
       4 . The coating device according to  claim 1 , wherein the mist box extracts from the original mist small mist particles having a small particle size as the fine mist.  
   
   
       5 . The coating device according to  claim 1 , wherein the primary spray has an injection port for injecting the liquid, the mist box having a wall portion faced to the injection port for separating a liquefied part from the original mist.  
   
   
       6 . The coating device according to  claim 5 , further comprising liquid discharging means connected to the mist box for discharging the liquefied part to the outside of the mist box.  
   
   
       7 . The coating device according to  claim 1 , further comprising a housing accommodating the primary spray, the mist box, and the secondary spray, the fine mist being sprayed towards the workpiece within the housing.  
   
   
       8 . The coating device according to  claim 7 , further comprising mist discharging means connected to the housing for discharging the fine mist from the housing.  
   
   
       9 . A coating device according to  claim 7 , wherein the mist box has a mist air inlet for introducing air containing the fine mist floating in the housing.