Draining structure of washing machine and draining method

Abstract

The disclosure relates to a draining structure of a washing machine and a draining method. An inner drum is installed in a housing of the washing machine. The inner drum is a tapered drum with a smaller diameter at one end and a larger diameter at the other end. A draining flow passage is arranged at the larger diameter end. One end of the draining flow passage communicates with the larger diameter end. The other end of the draining flow passage penetrates the inner drum and communicates with a drain pipe. The inner drum rotates and washing water flows to the larger diameter end along the tapered inner wall by centrifugal force. Washing water is drained out from the inner drum through the draining flow passage arranged at the larger diameter end and then drained out through the drain pipe to realize the discharge of washing water.

1 . A draining structure of a washing machine, wherein: the washing machine comprises an inner drum installed in a housing of the washing machine,
 the inner drum is a tapered drum with a smaller diameter at one end and a larger diameter at the other end, and   a draining flow passage is arranged at the end with larger diameter of the inner drum;   a first end of the draining flow passage is communicated with the inner drum, and a second end of the draining flow passage penetrates the inner drum and is communicated with a drain pipe of the washing machine.   
     
     
         2 . The draining structure of the washing machine according to  claim 1 , wherein: the inner drum is the tapered drum that gradually increases in diameter from an opening of the inner drum to a bottom of the inner drum, and
 a center of the bottom of the inner drum is installed on an inner drum support via a rotating shaft; and   the draining flow passage is arranged on an inner side surface of the bottom of the inner drum, and   the first end of the draining flow passage is arranged at an intersection of the bottom of the inner drum and a side wall of the inner drum, the second end of the draining flow passage is penetrates the center of the bottom of the inner drum and passes through a motor shaft along a axis of the inner drum;   the second end of the draining flow passage penetrating the bottom of the inner drum is communicated with the drain pipe of the washing machine.   
     
     
         3 . The draining structure of the washing machine according to  claim 2 , wherein: a plurality of the draining flow passages are provided on the bottom of the inner drum,
 the first ends of the draining flow passages are uniformly distributed on an outer periphery of the bottom of the inner drum at an equal interval angle and are communicated with an inside of the inner drum, and   the second ends of the draining flow passages are communicated and met at the center of the bottom of the inner drum and penetrate the center of the bottom of the inner drum to be communicated with the drain pipe of the washing machine.   
     
     
         4 . (canceled) 
     
     
         5 . The draining structure of the washing machine according to  claim 3 , wherein: each of the draining flow passages is formed of a hollow convex rib protruding from the inner side surface of the bottom of the inner drum, and
 the hollow convex rib lifts and beats clothes in the inner drum to wash the clothes during a rotation of the inner drum.   
     
     
         6 . The draining structure of the washing machine according to  claim 1 , wherein: the draining flow passage and/or the drain pipe is provided with a drain pump to apply pressure to water flowing to the bottom of the inner drum of the washing machine, and
 the water is drained out of the washing machine through the draining flow passage and the drain pipe.   
     
     
         7 . A draining method of a washing machine applied to the draining structure of the washing machine according to  claim 1 , wherein: the inner drum rotates at a certain rotating speed, and
 washing water in the inner drum flows to the end with larger diameter of the inner drum along the tapered inner wall under action of a centrifugal force, and   washing water is drained out from the inner drum through the draining flow passage arranged at the end with larger diameter of the inner drum when reaches the end with larger diameter of the inner drum, and then drained out from the washing machine through the drain pipe.   
     
     
         8 . The draining method of the washing machine according to  claim 7 , comprising:
 Step 1, the inner drum of the washing machine rotating at the certain rotating speed, and the water in the inner drum flowing to the side wall of the inner drum under the action of centrifugal force;   Step 2, the water in the inner drum flowing to the bottom of the inner drum with larger diameter along the side wall of the inner drum under the action of the centrifugal force generated in the rotating of the inner drum;   Step 3, the water flowing into the draining flow passage arranged on the bottom of the inner drum when reaching the bottom of the inner drum, and being drained out of the inner drum from the center of the inner drum through the draining flow passage, and then being discharged out of the washing machine through the drain pipe.   
     
     
         9 . The draining method of the washing machine according to  claim 8 , wherein: in the above-mentioned Step 3,
 the drain pump on the draining flow passage and/or the drain pipe is controlled to start to apply pressure to the water flowing to the bottom of the inner drum of the washing machine, and   the water is drained out of the washing machine through the draining flow passages and the drain pipe.   
     
     
         10 . The draining method of the washing machine according to  claim 7 , wherein: during a draining process of the washing machine, the inner drum rotates at a medium speed or a high speed, and
 the water in the inner drum adheres to the side wall of the inner drum under the action of centrifugal force and flows to the end with larger diameter of the inner drum.   
     
     
         11 . The draining structure of the washing machine according to  claim 1 , wherein: a plurality of the draining flow passages are provided on the bottom of the inner drum, the first end of at least one draining flow passage is arranged in a position between a central and a peripheral of the bottom of the inner drum and communicated with the inside of the inner drum, and
 the second end of the one draining flow passage penetrates the center of the bottom of the inner drum and communicated with the drain pipe of the washing machine.