Washing machine and control method

Abstract

A washing machine and a control method are provided. The washing machine includes an inner tub for accommodating water, a water collection structure for collecting water drained from the inner tub and a drainage control apparatus communicating with the water collection structure. The drainage control apparatus controls drainage according to a water level in the water collection structure. A detection apparatus is arranged to detect the water level in the water collection structure, and transmit a detection result to a main control apparatus to realize real-time monitoring. Through the arrangement of a drainage apparatus for draining the water in the water collection structure, the drainage apparatus is electrically connected with the main control apparatus, and the main control apparatus controls the drainage apparatus to drain or not to drain the water in the water collection structure according to the detection result of the detection apparatus.

1 . A washing machine, comprising an inner tub for accommodating water,
 a water collection structure for collecting water drained from the inner tub, and   a drainage control apparatus communicating with the water collection structure; and the drainage control apparatus controlling drainage according to a water level in the water collection structure.   
     
     
         2 . The washing machine according to  claim 1 , wherein the drainage control apparatus comprises a main control apparatus, a detection apparatus for detecting the water level in the water collection structure, and a drainage apparatus for draining the water in the water collection structure;
 the water collection structure is located below a tub bottom of the inner tub; and   the detection apparatus and the drainage apparatus are both electrically connected with the main control apparatus.   
     
     
         3 . The washing machine according to  claim 2 , wherein the water collection structure comprises a water collection cavity having an upper opening; an upper end of a side wall of the water collection cavity is lower than the tub bottom of the inner tub; the inner tub is communicated with the upper opening of the water collection cavity; and the detection apparatus is arranged in the water collection cavity. 
     
     
         4 . The washing machine according to  claim 3 , wherein the water collection structure comprises a mounting plate and a water retaining bar arranged on the mounting plate; the mounting plate and the water retaining bar form the water collection cavity; the detection apparatus is arranged on an upper side of the mounting plate. 
     
     
         5 . The washing machine according to  claim 2 , wherein the drainage apparatus comprises a drainage pipe communicating with the water collection structure; a control structure for controlling the drainage pipe to be connected/disconnected is arranged on the drainage pipe;
 the control structure is communicated with the drainage pipe, and is electrically connected with the main control apparatus;   the main control apparatus controls the control structure to be turned on/off according to the water level in the water collection structure detected by the detection apparatus.   
     
     
         6 . The washing machine according to  claim 5 , wherein the control structure is an electromagnetic valve electrically connected with the main control apparatus; and the main control apparatus controls the electromagnetic valve to be turned on/off according to the water level in the water collection structure detected by the detection apparatus for allowing the drainage pipe to be connected/disconnected. 
     
     
         7 . The washing machine according to  claim 5 , wherein the control structure is a drainage pump communicating with the drainage pipe; the drainage pump is electrically connected with the main control apparatus; and the main control apparatus controls the drainage pump to be turned on/off according to the water level in the water collection structure detected by the detection apparatus. 
     
     
         8 . The washing machine according to  claim 2 , wherein the detection apparatus is a water level sensor or a pressure sensor arranged in the water collection structure. 
     
     
         9 . A control method of the washing machine according to  claim 1 , comprising the following steps:
 presetting a water level height H 1  in a main control apparatus;   a detection apparatus detecting a water level height H 2  in the water collection structure, and transmitting a detection signal to the main control apparatus;   the main control apparatus determining whether H 2  is greater than H 1 ; if H 2  is greater than H 1 , the main control apparatus controlling a drainage apparatus to open, to drain water in the water collection structure; if H 2  is not greater than H 1 , the main control apparatus controlling the drainage apparatus to be in a closed state.   
     
     
         10 . The washing machine according to  claim 1 , wherein the drainage control apparatus comprises a drainage pipe communicating with a water collection structure; a float adjusting valve is arranged in the water collection structure or the drainage pipe; and
 when a water level in the water collection structure reaches a certain height, the float adjusting valve is open, and the water in the water collection structure is drained out of the washing machine through the drainage pipe.   
     
     
         11 . The washing machine according to  claim 4 , wherein the detection apparatus is detachably connected with the mounting plate. 
     
     
         12 . The washing machine according to  claim 3 , wherein the drainage apparatus comprises a drainage pipe communicating with the water collection structure; a control structure for controlling the drainage pipe to be connected/disconnected is arranged on the drainage pipe;
 the control structure is communicated with the drainage pipe, and is electrically connected with the main control apparatus;   the main control apparatus controls the control structure to be turned on/off according to the water level in the water collection structure detected by the detection apparatus.   
     
     
         13 . The washing machine according to  claim 4 , wherein the drainage apparatus comprises a drainage pipe communicating with the water collection structure; a control structure for controlling the drainage pipe to be connected/disconnected is arranged on the drainage pipe;
 the control structure is communicated with the drainage pipe, and is electrically connected with the main control apparatus;   the main control apparatus controls the control structure to be turned on/off according to the water level in the water collection structure detected by the detection apparatus.