Cleaning apparatus and water tank

Abstract

A cleaning apparatus includes a chassis, a main body, a first chamber, a second chamber, a first suction device, and a second suction device. The main body is rotatably connected to the chassis, the first chamber is arranged on the main body, and the second chamber is communicated to the first chamber. The first suction device is communicated with the first chamber to provide power to drive external liquid into the first chamber, and the second suction device provides power to drive the liquid in the first chamber entering the second chamber. The cleaning apparatus includes a first housing and a second housing. At least part of the first housing is nested in the second housing.

What is claimed is: 
     
         1 . A cleaning apparatus comprising:
 a chassis;   a main body rotatably connected to the chassis;   a first chamber arranged on the main body;   a second chamber communicated with the first chamber;   a first suction device communicated with the first chamber, the first suction device being configured to provide power to drive external liquid into the first chamber; and   a second suction device communicated with the second chamber, the second suction device being configured to provide power to drive liquid in the first chamber entering the second chamber;   wherein the cleaning apparatus comprises a first housing and a second housing, at least part of the first housing is nested in the second housing; part of an inner wall of the second housing and part of an outer wall of the first housing define the second chamber;   the first housing defines the first chamber, or partial inner wall of the first housing and partial inner wall of the second housing cooperatively define the first chamber.   
     
     
         2 . The cleaning apparatus according to  claim 1 , wherein
 the first suction device is communicated to the first chamber through a first suction channel, and the second suction device is communicated to the second chamber through a second suction channel;   the second suction channel is arranged on a wall surface of the first housing or a wall surface of the second housing, or, a part of the second suction channel is arranged on a wall surface of the first housing and is isolated from the first chamber, and the other part of the second suction channel is defined by a part of an outer wall of the first housing and a part of an inner wall of the second housing.   
     
     
         3 . The cleaning apparatus according to  claim 1 , wherein
 an outer wall of the second housing is provided with a holder, and a side wall of the first housing is provided with an opening; and   the opening is arranged towards the holder.   
     
     
         4 . The cleaning apparatus according to  claim 1 , wherein a first sealing member is provided between the first housing and the second housing, and the first sealing member is squeezed between the first housing and the second housing to provide circumferential sealing between the first housing and the second housing. 
     
     
         5 . The cleaning apparatus according to  claim 4 , wherein
 the side wall of the first housing is defined with a gas leakage section;   a second sealing member is further provided between the first housing and the second housing;   the first sealing member and the second sealing member are arranged at intervals along a height direction of the first housing, and the first sealing member is located above the second sealing member;   the gas leakage section is located between the first sealing member and the second sealing member.   
     
     
         6 . The cleaning apparatus according to  claim 5 , wherein
 the opening of the first housing defines the gas leakage section;   and/or, filtering holes provided on the side wall of the first housing defines the gas leakage section;   and/or, the first housing comprises at least one movable member, the movable member at least forms a side wall of the first housing, a gap is defined between the movable members or defined between the movable member and the side wall of the first housing, the gap is located on the side wall of the first housing, and the gap defines the gas leakage section.   
     
     
         7 . The cleaning apparatus according to  claim 5 , wherein
 a part of the outer wall of the first housing and a part of the inner wall of the second housing co-enclose at least part of the second suction channel;   the second sealing member comprises a first sealing portion and a second sealing portion, the first sealing portion surrounds the outside of the second suction channel, the second sealing portion surrounds the first housing in a circumferential direction of the first housing, and the first sealing portion and the second sealing portion are connected.   
     
     
         8 . The cleaning apparatus according to  claim 1 , wherein
 the first chamber and the second chamber are communicated through a liquid leakage structure, allowing liquid in the first chamber to be discharged into the second chamber.   
     
     
         9 . The cleaning apparatus according to  claim 8 , wherein
 the liquid leakage structure is arranged on a bottom wall of the first housing, and the second sealing member is arranged around the liquid leakage structure; or   an outer side wall of the first housing is provided with a liquid leakage notch, the liquid leakage notch defines the liquid leakage structure with the interior of the second housing, the second sealing member is provided with a sealing strip notch, and the position of the sealing strip notch corresponds to the position of the liquid leakage notch.   
     
     
         10 . The cleaning apparatus according to  claim 8 , wherein
 the liquid leakage structure is arranged at a rear side of the first chamber; and/or,   the liquid leakage structure is arranged at a lower portion of the first chamber; and/or   a maximum size of the liquid leakage structure in a front-rear direction is smaller than a minimum size of the liquid leakage structure in a left-right direction.   
     
     
         11 . The cleaning apparatus according to  claim 2 , wherein
 the second suction device comprises a gas suction device;   the gas suction device is configured to suction gas in the second chamber to allow a negative pressure generating in the second chamber; and/or,   a flow rate of the gas suction device is less than a flow rate of the first suction device; and/or,   the first chamber and the second chamber are communicated through a liquid leakage structure, and a cross-sectional area of a suction port of the gas suction device is similar to a cross-sectional area of the liquid leakage structure.   
     
     
         12 . The cleaning apparatus according to  claim 11 , wherein
 the second suction channel comprises a gas inlet communicated with the second chamber and a gas outlet communicated with the gas suction device.   
     
     
         13 . The cleaning apparatus according to  claim 12 , wherein the second chamber is arranged on the main body, and a maximum size of the gas inlet and/or the second suction channel in a front-rear direction of the main body is smaller than a minimum size of the gas inlet and/or the second suction channel in a left-right direction of the main body. 
     
     
         14 . The cleaning apparatus according to  claim 12 , wherein a cross-sectional area of the second suction channel gradually decreases in a direction from the gas inlet to the gas outlet. 
     
     
         15 . The cleaning apparatus according to  claim 12 , wherein the second suction channel comprises at least one guiding wall, the guiding wall is configured to guide air flow in the second suction channel to flow from the gas inlet to the gas outlet along a curved path. 
     
     
         16 . The cleaning apparatus according to  claim 12 , wherein the cleaning apparatus comprises a third detection assembly for detecting whether water enters the second suction channel. 
     
     
         17 . The cleaning apparatus according to  claim 2 , wherein
 a gas outlet of the second suction channel is arranged on a wall surface of the second housing; or,   the first housing is partially nested in the second housing, and the gas outlet is provided on a wall surface of the first housing and is located at a portion of the first housing exposed from the second housing.   
     
     
         18 . The cleaning apparatus according to  claim 2 , further comprising a first sealing portion for sealing the other part of the second suction channel which is defined by the outer wall of the first housing and the inner wall of the second housing. 
     
     
         19 . The cleaning apparatus according to  claim 4 , wherein
 the first housing comprises a first body and a second body, the first body is moveably assembled on an upper part of the second body, a third sealing member is arranged between the first body and the second body, and the third sealing member is configured for circumferential sealing between the first body and the second body;   or, the first body and the second body are arranged in the second housing at intervals, a fourth sealing member is provided for circumferential sealing between the first body and the second housing, and a fifth sealing member is provided for circumferential sealing between the second body and the second housing.   
     
     
         20 . A water tank, configured to be installed on a main body of a cleaning apparatus, the main body being rotatably connected to a chassis of the cleaning apparatus, wherein the water tank comprises:
 a first chamber arranged on the main body, the first chamber being capable of communicating with a first suction device, the first suction device being configured to provide power to drive external liquid into the first chamber;   a second chamber communicated with the first chamber; the second chamber being capable of communicating with a second suction device, the second suction device being configured to provide power to drive liquid in the first chamber entering the second chamber;   wherein the water tank comprises a first housing and a second housing, at least part of the first housing is nested in the second housing; part of an inner wall of the second housing and part of an outer wall of the first housing define the second chamber;   the first housing defines the first chamber, or partial inner wall of the first housing and partial inner wall of the second housing cooperatively define the first chamber.