Drum type washer and dryer

Abstract

The present invention provides a drum type washer and dryer, by which drying efficiency and performance are enhanced and by which thermal transformation of the tub due to heat supplied from a drying duct can be minimized. The present invention includes a tub having a hot air inlet on its upper front portion, a drum rotatably provided within the tub, a drying duct having one end connected to the hot air inlet of the tub to supply hot air to the drum, the drying duct including a heater and blower fan therein to generate the hot air, a condensing duct having one end communicating with one side of the tub and the other end communicating with the drying duct, the condensing duct removing humidity of air discharged from the tub to lead the humidity-removed air to the drying duct, and a plurality of reinforcement ribs projected from a vicinity of the hot air inlet of the tub.

1 . A drum type washer and dryer comprising: 
 a tub having a hot air inlet on its upper front portion;    a drum rotatably provided within the tub;    a drying duct having one end connected to the hot air inlet of the tub to supply hot air to the drum, the drying duct including a heater and blower fan therein to generate the hot air;    a condensing duct having one end communicating with one side of the tub and the other end communicating with the drying duct, the condensing duct removing humidity of air discharged from the tub to lead the humidity-removed air to the drying duct; and    a plurality of reinforcement ribs projected from a vicinity of the hot air inlet of the tub.    
   
   
       2 . The drum type washer and dryer of  claim 1 , wherein the tub is formed of a synthetic resin based material by injection molding.  
   
   
       3 . The drum type washer and dryer of  claim 1 , wherein each of a plurality of the reinforcement ribs is configured to have a predetermined length in a direction perpendicular to each side forming the hot air inlet of the tub.  
   
   
       4 . The drum type washer and dryer of  claim 1 , wherein a plurality of the reinforcement ribs are provided to an inside of the tub along a rim of the hot air inlet.  
   
   
       5 . The drum type washer and dryer of  claim 1 , wherein a plurality of the reinforcement ribs are provided to an outside of the tub along a rim of the hot air inlet.  
   
   
       6 . The drum type washer and dryer of  claim 1 , further comprising a guide rib extending from the vicinity of the hot air inlet toward an inner space of the tub to guide the hot air blown out of the drying duct toward the drum.  
   
   
       7 . The drum type washer and dryer of  claim 6 , wherein the guide rib is built in one body of a rim of the hot air inlet.  
   
   
       8 . The drum type washer and dryer of  claim 6 , wherein the guide rib and the tub are separately formed and wherein the guide rib is attached to an inside of the tub.  
   
   
       9 . The drum type washer and dryer of  claim 8 , wherein the guide rib is formed of a metallic material.  
   
   
       10 . The drum type washer and dryer of  claim 8 , wherein the guide rib is formed of a synthetic resin based material.  
   
   
       11 . The drum type washer and dryer of  claim 6 , wherein the guide rib is inclined downward from the tub toward the drum.  
   
   
       12 . The drum type washer and dryer of  claim 6 , wherein the guide rib is built in one body of the tub.  
   
   
       13 . The drum type washer and dryer of  claim 12 , wherein a plurality of the reinforcement ribs are built in one body of an outer circumference of the guide rib.  
   
   
       14 . The drum type washer and dryer of  claim 1 , wherein a multitude of holes are provided to a front portion of the drum to perforate.  
   
   
       15 . The drum type washer and dryer of  claim 14 , wherein a multitude of the holes are provided to the front portion of the drum in a circumferential direction.  
   
   
       16 . The drum type washer and dryer of  claim 14 , wherein each of a multitude of the holes has a shape selected from the group consisting of a circle, an oval, and a long hole.  
   
   
       17 . The drum type washer and dryer of  claim 1 , wherein one end of the condensing duct communicates with a lower rear portion of the tub.  
   
   
       18 . The drum type washer and dryer of  claim 1 , wherein the drying duct is fixed to a top portion of the tub.  
   
   
       19 . The drum type washer and dryer of  claim 18 , wherein a heat-shielding bracket is provided to a fixing part of the drying duct and the tub.  
   
   
       20 . A drum type washer and dryer comprising: 
 a tub having a hot air inlet on its upper front portion, the tub formed of a synthetic resin based material by injection molding;    a drum rotatably provided within the tub;    a drying duct having one end connected to the hot air inlet of the tub to supply hot air to the drum, the drying duct including a heater and blower fan therein to generate the hot air;    a condensing duct having one end communicating with one side of the tub and the other end communicating with the drying duct, the condensing duct removing humidity of air discharged from the tub to lead the humidity-removed air to the drying duct;    a plurality of reinforcement ribs projected from a vicinity of the hot air inlet of the tub; and    a guide rib extending from the vicinity of the hot air inlet toward an inner space of the tub to guide the hot air blown out of the drying duct toward the drum.