Maintenance station for cleaning device, and cleaning system

Abstract

A surface cleaning device includes: a liquid distributor, configured to distribute a cleaning liquid to a cleaning component or a surface to be cleaned; and a wastewater tank, configured to collect wastewater recovered from the surface to be cleaned, where the wastewater tank includes: a wastewater inlet, configured to enable the wastewater to enter the wastewater tank; and a first opening, configured to enable, in response to a self-cleaning instruction of the wastewater tank, airflow to enter the wastewater tank through the first opening, thereby causing oscillation of the wastewater in the wastewater tank, and achieving self-cleaning of the wastewater tank under the oscillation of the wastewater.

What is claimed is: 
     
         1 . A surface cleaning device, comprising:
 a liquid distributor, configured to distribute a cleaning liquid to a cleaning component or a surface to be cleaned; and   a wastewater tank, configured to collect wastewater recovered from the surface to be cleaned, wherein the wastewater tank comprises:
 a wastewater inlet, configured to enable the wastewater to enter the wastewater tank; and
 a first opening, configured to enable, in response to a self-cleaning instruction of the wastewater tank, airflow to enter the wastewater tank through the first opening, thereby causing oscillation of the wastewater in the wastewater tank, and achieving self-cleaning of the wastewater tank under the oscillation of the wastewater. 
 
   
     
     
         2 . The device according to  claim 1 , wherein the first opening is arranged at the bottom of the wastewater tank. 
     
     
         3 . The device according to  claim 1 , wherein the first opening comprises a wastewater outlet configured to discharge the wastewater in the wastewater tank. 
     
     
         4 . The device according to  claim 1 , further comprising:
 a first duct, connected with the first opening and configured to enable the airflow to enter the wastewater tank through the first duct.   
     
     
         5 . The device according to  claim 4 , wherein the first duct is of an inverted U-shaped structure. 
     
     
         6 . The device according to  claim 4 , further comprising:
 a pressure relief valve, configured to seal a second duct connected with the first duct.   
     
     
         7 . The device according to  claim 1 , wherein the first opening is configured to enable, in response to the self-cleaning instruction, the airflow to enter the wastewater tank from the first opening through an opened valve. 
     
     
         8 . The device according to  claim 1 , further comprising:
 a first fan, configured to provide power for enabling the airflow to enter the wastewater tank from the first opening.   
     
     
         9 . The device according to  claim 8 , wherein the first fan is arranged in an airflow path and located downstream of the first opening, and the airflow path enters the wastewater tank from exterior of the wastewater tank through the first opening and then extends outside the wastewater tank through the first fan. 
     
     
         10 . The device according to  claim 1 , wherein the airflow comes from a second fan. 
     
     
         11 . The device according to  claim 10 , wherein the second fan is arranged in an airflow path and located upstream of the first opening, and the airflow path extends from exterior of the wastewater tank into the wastewater tank through the first opening. 
     
     
         12 . The device according to  claim 10 , wherein the second fan is arranged at a maintenance station docked with the cleaning device. 
     
     
         13 . A self-cleaning method of a wastewater tank, comprising:
 enabling, in response to a self-cleaning instruction of the wastewater tank, airflow to enter the wastewater tank from a first opening of the wastewater tank, thereby causing oscillation of wastewater in the wastewater tank, and achieving self-cleaning of the wastewater tank under the oscillation of the wastewater.   
     
     
         14 . The method according to  claim 13 , further comprising:
 opening a valve in response to the self-cleaning instruction, thereby enabling an inner cavity of the wastewater tank to be communicated with outside through the first opening.   
     
     
         15 . The method according to  claim 13 , further comprising:
 closing a valve in response to completion of a self-cleaning task of the wastewater tank, thereby preventing an inner cavity of the wastewater tank from being communicated with outside through the first opening.   
     
     
         16 . The method according to  claim 13 , wherein enabling the airflow to enter the wastewater comprises:
 activating a first fan in response to the self-cleaning instruction of the wastewater tank, wherein the first fan is arranged in a cleaning device provided with the wastewater tank.   
     
     
         17 . The method according to  claim 13 , wherein enabling the airflow to enter the wastewater comprises:
 activating a first fan in response to the self-cleaning instruction of the wastewater tank,   wherein the first fan is arranged in an airflow path and located downstream of the first opening, and the airflow path enters the wastewater tank from exterior of the wastewater tank through the first opening and then extends outside through the first fan.   
     
     
         18 . The method according to  claim 13 , wherein enabling the airflow to enter the wastewater comprises:
 opening a valve in response to the self-cleaning instruction of the wastewater tank.   
     
     
         19 . The method according to  claim 13 , wherein enabling the airflow to enter the wastewater comprises:
 activating a second fan in response to the self-cleaning instruction of the wastewater tank,   wherein the second fan is arranged in an airflow path and located upstream of the first opening, and the airflow path extends into the wastewater tank from exterior of the wastewater tank through the first opening.   
     
     
         20 . The method according to  claim 13 , wherein enabling the airflow to enter the wastewater comprises:
 activating a second fan in response to the self-cleaning instruction of the wastewater tank,   wherein the second fan is arranged in a maintenance station docked with the cleaning device.