Washing machine

Abstract

A washing machine includes a washing tub which can be used for containing water during a washing process and a water collecting device used for collecting drain water from the washing tub, wherein the water collecting device includes a water collecting cavity, and the water collecting cavity is internally provided with a volume expansion structure for expanding a volume of the water collecting cavity. The water collecting cavity of the water collecting device of the present disclosure is internally provided with the volume expansion structure for expanding the volume of the water collecting cavity, and the volume expansion structure achieves a purpose of expanding the volume by outward expanding the water collecting cavity as much as possible under the condition that a height of the water collecting device remains unchanged, so that the problem of water splashing or overflow in the water collecting device is avoided.

1 . A washing machine, comprising a washing tub for containing water during a washing process and a water collecting device for collecting drain water from the washing tub, wherein,
 the water collecting device comprises a water collecting cavity, and the water collecting cavity internally provided with a volume expansion structure for expanding a volume of the water collecting cavity.   
     
     
         2 . The washing machine according to  claim 1 , wherein, a bottom wall of the water collecting cavity comprises a bottom wall body located in middle and a water collecting groove recessed and located on an outer periphery of the bottom wall body, the water collecting device comprises a drainage port communicating with the water collecting groove, and
 the volume expansion structure is located on a side wall, close to the bottom wall body, of the water collecting groove, and is used for expanding a volume of the water collecting groove.   
     
     
         3 . The washing machine according to  claim 2 , wherein, the volume expansion structure comprises a first volume expansion part, and
 the first volume expansion part is formed by the side wall extending obliquely toward the bottom wall body, close to the bottom wall body, of the water collecting groove.   
     
     
         4 . The washing machine according to  claim 3 , wherein, the side wall, close to the bottom wall body, of the water collecting groove extends obliquely toward the bottom wall body in an entire circumferential direction to form a circle of the first volume expansion part. 
     
     
         5 . The washing machine according to  claim 3 , wherein inclination angles of the first volume expansion parts at positions in the entire circumferential direction of the bottom wall body are same. 
     
     
         6 . The washing machine according to  claim 2 , wherein the volume expansion structure comprises a second volume expansion part, and the second volume expansion part is formed by recessing the side wall, close to the bottom wall body, of the water collecting groove toward the bottom wall body. 
     
     
         7 . The washing machine according to  claim 6 , wherein the second volume expansion part comprises inward recesses distributed around the outer periphery of the bottom wall body and formed by partially recessing the side wall, close to the bottom wall body, of the water collecting groove toward the bottom wall body, wherein
 at least one of the inward recesses corresponds to a position of the drainage port.   
     
     
         8 . The washing machine according to  claim 1 , wherein a part, below a highest water level, of a tub wall of the washing tub is impermeable, and the washing tub is for containing water during the washing process;
 a part, above the highest water level, of the tub wall of the washing tub is provided with a dehydration hole, and the washing tub discharges water from the dehydration hole during a dehydration process; and   a dehydration and drainage device is arranged on an outer wall of the washing tub, a water inlet end of the dehydration and drainage device is communicated with the dehydration hole, and a water outlet end of the dehydration and drainage device is in the water collecting cavity of the water collecting device.   
     
     
         9 . The washing machine according to  claim 8 , wherein the water collecting device is located under the washing tub and arranged coaxially with the washing tub, an upper opening of the water collecting device is lower than the dehydration hole of the washing tub, and the dehydration and drainage device comprises a drainage channel extending into the water collecting groove of the water collecting device from top to bottom; and a depth of the water collecting groove in a vertical direction gradually increases along a direction in which the washing tub rotates during the dehydration process. 
     
     
         10 . The washing machine according to  claim 9 , wherein dehydration holes are formed at a tub opening of the washing tub, drainage channels are arranged and are in one-to-one corresponding to the dehydration holes, upper ends of the drainage channels are communicated with the dehydration holes, and lower ends of the drainage channels are in the water collecting groove of the water collecting device; or,
 dehydration hole groups are uniformly formed at the tub opening of the washing tub, each of the dehydration hole groups comprises the dehydration holes, and the drainage channels are in one-to-one corresponding to the dehydration hole groups, an upper end of each of the drainage channels is communicated with the dehydration holes in one of the dehydration hole groups, and the lower ends of the drainage channels are in the water collecting groove of the water collecting device.   
     
     
         11 . The washing machine according to  claim 4 , wherein, the side wall, close to the bottom wall body, of the water collecting groove partially extends obliquely toward the bottom wall body to form first volume expansion parts distributed along the outer periphery of the bottom wall body. 
     
     
         12 . The washing machine according to  claim 4 , wherein inclination angles of the first volume expansion parts at positions in the entire circumferential direction of the bottom wall body are same. 
     
     
         13 . The washing machine according to  claim 11 , wherein the inclination angles of the first volume expansion parts gradually increase in the entire circumferential direction of the bottom wall body. 
     
     
         14 . The washing machine according to  claim 3 , wherein the volume expansion structure comprises a second volume expansion part, and the second volume expansion part is formed by recessing the side wall, close to the bottom wall body, of the water collecting groove toward the bottom wall body. 
     
     
         15 . The washing machine according to  claim 5 , wherein the volume expansion structure comprises a second volume expansion part, and the second volume expansion part is formed by recessing the side wall, close to the bottom wall body, of the water collecting groove toward the bottom wall body.