Washing-drying machine

Abstract

A washing-drying machine comprises a cabinet; a tub installed in the cabinet; a washing tub rotatably arranged in the tub; a water supplying pipe connected to the tub for supplying water in order that wet air can be condensed inside the tub; and a circulation duct arranged outside the tub and having both ends connected to the tub, for circulating air inside the tub therethrough. Accordingly, a drying efficiency is enhanced without increasing a size of the cabinet, and a drying time is shortened.

1 . A washing-drying machine, comprising: 
 a cabinet;    a tub installed in the cabinet;    a washing tub rotatably arranged in the tub;    a water supplying pipe connected to the tub for supplying water in order that wet air can be condensed inside the tub; and    a circulation duct arranged outside the tub and having both ends connected to the tub, for circulating air inside the tub therethrough.    
     
     
         2 . The washing-drying machine of  claim 1 , further comprising a blower for accelerating flow of air inside the circulation duct.  
     
     
         3 . The washing-drying machine of  claim 1 , further comprising a heater for heating air inside the circulation duct.  
     
     
         4 . The washing-drying machine of  claim 1 , wherein the water supplying pipe is coupled to the tub so that water be dropped along an inner surface of a rear end of the tub.  
     
     
         5 . The washing-drying machine of  claim 1 , wherein a water dropping delaying portion for delaying a water dropping speed is formed at an inner surface of the tub.  
     
     
         6 . The washing-drying machine of  claim 1 , wherein a duct connecting portion is integrally provided at an upper portion of the tub, to which an inlet of the circulation duct is connected.  
     
     
         7 . The washing-drying machine of  claim 6 , wherein the duct connecting portion is arranged so that a rear end thereof may be on the same line as a rear end of the tub or may be at a front side of the rear end of the tub in back and forth directions of the cabinet.  
     
     
         8 . A washing-drying machine, comprising: 
 a cabinet;    a tub installed in the cabinet;    a washing tub rotatably arranged in the tub;    a water supplying pipe connected to the tub so that water flow on an inner surface of the tub; and    a circulation duct arranged outside the tub and having both ends connected to the tub, for circulating air inside the tub therethrough.    
     
     
         9 . The washing-drying machine of  claim 8 , wherein a water dropping delaying portion for delaying a downward flowing of water is formed at an inner surface of the tub.  
     
     
         10 . The washing-drying machine of  claim 8 , wherein the washing tub is rotated centering around a horizontally-arranged rotation shaft, and a duct connecting portion is integrally provided at an upper portion of the tub, to which an inlet of the circulation duct is connected.  
     
     
         11 . The washing-drying machine of  claim 10 , wherein the duct connecting portion is arranged so that a rear end thereof be on the same line as a rear end of the tub or be at a front side of the rear end of the tub in back and forth directions of the cabinet.  
     
     
         12 . A washing-drying machine, comprising: 
 a cabinet;    a tub installed in the cabinet;    a washing tub rotatably arranged in the tub;    a water supplying pipe arranged at the tub so that water be dropped by contacting the washing tub; and    a circulation duct arranged outside the tub and having both ends connected to the tub, for circulating air inside the tub.    
     
     
         13 . The washing-drying machine of  claim 12 , wherein the washing tub includes a perforation portion having a plurality of through holes penetratingly formed at a circumferential surface, and a non-perforation portion formed at one side of the perforation portion.  
     
     
         14 . The washing-drying machine of  claim 13 , wherein the washing tub is rotated centering around a horizontally-arranged rotation shaft, and a rib protruding along a radial direction of the washing tub and extending along a circumferential direction of the washing tub for preventing water from flowing to the perforation portion is formed at one side of the non-perforation portion.  
     
     
         15 . The washing-drying machine of  claim 12 , wherein a guide portion inwardly concaved along a radial direction and extending along a circumferential direction for guiding flow of water is formed at the washing tub.  
     
     
         16 . The washing-drying machine of  claim 12 , wherein the washing tub is rotated centering around a horizontally-arranged rotation shaft, and further comprising a channel member having a circular ring shape, having a sectional surface of which a center portion is inwardly concaved, rotatably coupled to a rear end of the washing tub, for passing water supplied from the water supplying pipe.  
     
     
         17 . The washing-drying machine of  claim 12 , wherein the washing tub is rotated centering around a horizontally-arranged rotation shaft washing tub, and the water supplying pipe is coupled to the tub so that water downwardly flow along an inner surface of a rear end of the washing tub.  
     
     
         18 . The washing-drying machine of  claim 12 , further comprising a condensing disc having a disc shape and coupled to a rear end of the washing tub, for performing a heat exchange function by contacting water.  
     
     
         19 . The washing-drying machine of  claim 12 , wherein a water dropping delaying portion for delaying dropping of water is formed at an inner surface of the tub.