Cleaning robot and cleaning system

Abstract

A cleaning robot includes a dust suction assembly including a roller brush assembly, a cavity body, a first blocking member located on a front side and a second blocking member located on a rear side of the roller brush assembly. The roller brush assembly includes a first roller brush and a second roller brush that are longitudinally arranged. Each of the first blocking member and the second blocking member has a free end close to a bottom surface of the dust suction assembly; a distance between the free end of the first blocking member and the bottom surface is a first distance, and a distance between the free end of the second blocking member and the bottom surface is a second distance, both the first distance and the second distance is greater than or equal to 0 and less than 5 mm.

What is claimed is: 
     
         1 . A cleaning robot comprising:
 a body having a front end;   a movement assembly, disposed on the body and configured to support and drive the cleaning robot to move on an environmental surface of a to-be-cleaned region;   a controller configured to control the cleaning robot to automatically perform cleaning work on the environmental surface; and   a dust suction assembly, disposed on the body and configured to perform cleaning work on the environmental surface,   wherein:
 the dust suction assembly comprises a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; 
 the roller brush assembly comprises a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; 
 each of the first blocking member and the second blocking member has a free end close to the environmental surface; and 
 when the cleaning robot is located on a rigid ground, a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a minimum distance between the free end of the second blocking member and the rigid ground is a second distance, wherein the first distance is less than 5 mm, the second distance is less than 5 mm. 
   
     
     
         2 . The cleaning robot according to  claim 1 , wherein a height difference between the first distance and the second distance is within 3 mm, so that when the first roller brush and the second roller brush rotate toward each other in opposite directions, a first air flow flows from an outside of the cavity, under the first blocking member, through a bottom of the first roller brush, and toward a space between the first roller brush and the second roller brush, and a second air flow flows from the outside of the cavity, under the second blocking member, through a bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush. 
     
     
         3 . The cleaning robot according to  claim 1 , wherein:
 a first opening portion formed by the free end of the first blocking member and the rigid ground has a first area;   a second opening portion formed by the free end of the second blocking member and the rigid ground has a second area; and   a ratio of the first area to the second area ranges from 0.7 to 1.3, so that when the first roller brush and the second roller brush rotate toward each other in opposite directions, a first air flow flows from an outside of the cavity, under the first blocking member, through a bottom of the first roller brush, and toward a space between the first roller brush and the second roller brush, and a second air flow flows from the outside of the cavity, under the second blocking member, through a bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush.   
     
     
         4 . The cleaning robot according to  claim 1 , wherein:
 in the first blocking member, a sealing area accounts for over 70%, and in the second blocking member, a sealing area accounts for over 70%; or   an area of an air leakage hole of at least one blocking member in the first blocking member and the second blocking member accounts for 30% or below of an area of a corresponding blocking member, so that when the first roller brush and the second roller brush rotate toward each other in opposite directions, a first air flow flows from an outside of the cavity, under the first blocking member, through a bottom of the first roller brush, and toward a space between the first roller brush and the second roller brush, and a second air flow flows from the outside of the cavity, under the second blocking member, through a bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush.   
     
     
         5 . The cleaning robot according to  claim 1 , wherein:
 a first opening portion formed by the free end of the first blocking member and the rigid ground has a first area;   a second opening portion formed by the free end of the second blocking member and the rigid ground has a second area; and   a difference value between the first area and the second area is greater than or equal to 0 and less than 1100 mm 2 ; or a sum value of the first area and the second area is greater than or equal to 0 and less than 2200 mm 2 , so that when the first roller brush and the second roller brush rotate toward each other in opposite directions, a first air flow flows from an outside of the cavity, under the first blocking member, through a bottom of the first roller brush, and toward a space between the first roller brush and the second roller brush, and a second air flow flows from the outside of the cavity, under the second blocking member, through a bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush.   
     
     
         6 . The cleaning robot according to  claim 1 , further comprising a dust suction fan, configured to generate a negative pressure,
 wherein when the cleaning robot is located on a carpet and the free end of the first blocking member and the free end of the second blocking member are in contact with the carpet, a flow rate of an air flow flowing through an inside of the carpet accounts for 70% or above of a flow rate of an air flow flowing out from a dust inlet of the cavity.   
     
     
         7 . The cleaning robot according to  claim 1 , wherein the first distance is greater than or equal to the second distance, and a difference value between the first distance and the second distance is within 2 mm. 
     
     
         8 . The cleaning robot according to  claim 1 , wherein:
 a minimum distance between the free end of the first blocking member and a lowest position point of the first roller brush is a third distance, the third distance is less than 15 mm, and a first air flow is guided to a bottom of the first roller brush; and   a minimum distance between the free end of the second blocking member and a lowest position point of the second roller brush is a fourth distance, the fourth distance is less than 15 mm, and a second air flow is guided to a bottom of the second roller brush.   
     
     
         9 . The cleaning robot according to  claim 1 , wherein a length of a connecting line between the free end of the first blocking member and a lowest position point of the first roller brush is less than a distance between the lowest position point of the first roller brush and a lowest position point of the second roller brush. 
     
     
         10 . The cleaning robot according to  claim 9 , wherein:
 a first horizontal distance exists between the free end of the first blocking member and an outer contour of the first roller brush, and the first horizontal distance is less than or equal to 5 mm; and a second horizontal distance exists between the free end of the second blocking member and the second roller brush, and the second horizontal distance is less than or equal to 5 mm; or   a minimum distance between the free end of the first blocking member and an outer contour of the first roller brush is less than or equal to 4 mm; and a minimum distance between the free end of the second blocking member and an outer contour of the second roller brush is less than or equal to 4 mm.   
     
     
         11 . The cleaning robot according to  claim 1 , wherein:
 the cavity has a dust inlet in communication with a dust suction fan; and   the first roller brush rotates in a first direction while the second roller brush rotates in a second, opposite and facing direction, so that a first horizontal distance between the free end of the first blocking member and the first roller brush forms a first inlet through which air is hindered from flowing toward the dust inlet; and a second horizontal distance between the free end of the second blocking member and the second roller brush forms a second inlet through which air is hindered from flowing toward the dust inlet.   
     
     
         12 . The cleaning robot according to  claim 1 , wherein hardnesses of materials of the first blocking member and the second blocking member are both greater than or equal to 80 HA. 
     
     
         13 . The cleaning robot according to  claim 7 , wherein:
 the first blocking member is movable to adjust a distance between the free end of the first blocking member and the rigid ground, providing the first blocking member with a closed state and an open state;   when the first blocking member is in the closed state, the first distance exists between the free end of the first blocking member and the rigid ground; and   when the first blocking member is in the open state, the distance between the free end of the first blocking member and the rigid ground is greater than the first distance.   
     
     
         14 . The cleaning robot according to  claim 13 , wherein:
 the dust suction assembly comprises a housing, the housing comprises a first roller brush support portion at least partially covering the first roller brush, and the first blocking member is movably disposed on the first roller brush support portion, to block the first roller brush; and   the housing further comprises a second roller brush support portion at least partially covering the second roller brush, and the second blocking member is a part of the second roller brush support portion, to block the second roller brush; and the first roller brush support portion and the second roller brush support portion surround to form the cavity configured to accommodate the roller brush assembly.   
     
     
         15 . The cleaning robot according to  claim 14 , wherein:
 when the first blocking member is in the open state, a difference value between a first air flow and a second air flow is Δ1; and when the first blocking member is in the closed state, and the difference value between the first air flow and the second air flow is Δ2, wherein Δ2 is less than Δ1; or   when the first blocking member is in the closed state, an air flow at a beating region in which the first roller brush beats the environmental surface has a first flow speed; and when the first blocking member is in the open state, the air flow at the beating region has a second flow speed, wherein the first flow speed is greater than the second flow speed.   
     
     
         16 . The cleaning robot according to  claim 14 , wherein when the first blocking member is in the closed state, a dust inlet of the cavity has a first degree of vacuum, and when the first blocking member is in the open state, the dust inlet of the cavity has a second degree of vacuum, wherein the first degree of vacuum is greater than the second degree of vacuum. 
     
     
         17 . The cleaning robot according to  claim 1 , wherein:
 the dust suction assembly comprises a housing;   the housing comprises a roller brush support configured to at least partially cover and support the roller brush assembly, and the roller brush support is configured to be vertically floatable relative to a horizontal plane;   the roller brush assembly is disposed on the roller brush support, and the roller brush assembly floats as a roller brushes support floats; and   the first blocking member is disposed on the roller brush support, to enable the first blocking member to float as the roller brushes support floats.   
     
     
         18 . The cleaning robot according to  claim 1 , wherein the cleaning robot comprises a fan, and a power of the fan is greater than or equal to 60 W. 
     
     
         19 . A cleaning robot comprising:
 a body having a front end;   a movement assembly disposed on the body and configured to support and drive the cleaning robot to move on an environmental surface of a to-be-cleaned region;   a controller configured to control the cleaning robot to automatically perform cleaning work on the environmental surface; and   a dust suction assembly disposed on the body and configured to perform cleaning work on the environmental surface,   wherein:
 the dust suction assembly comprises a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; 
 the roller brush assembly comprises a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; 
 each of the first blocking member and the second blocking member has a free end close to the environmental surface; and 
 when the cleaning robot is located on a carpet and a pile length of the carpet is greater than a preset length, the free end of the first blocking member and the free end of the second blocking member are in contact with the carpet, to enable a first air flow to flow from an outside of the cavity to a dust inlet of the cavity through an inside of the carpet and a second air flow to flow from the outside of the cavity to the dust inlet through the inside of the carpet, wherein a ratio of the first air flow to the second air flow is ranges from 0.7 to 1.3, inclusive. 
   
     
     
         20 . A cleaning system comprising:
 a base station configured to park a cleaning robot, the base station including a dust collection fan configured to perform a dust collection maintenance operation; and   the cleaning robot including:
 a dust collection box; 
 a body having a front end; 
 a movement assembly disposed on the body and configured to support and drive the cleaning robot to move on an environmental surface of a to-be-cleaned region; 
 a controller configured to control the cleaning robot to automatically perform cleaning work on the environmental surface; and 
 a dust suction assembly, disposed on the body and configured to perform cleaning work on the environmental surface, 
   wherein:
 the dust suction assembly comprises a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; 
 the roller brush assembly comprises a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; 
 each of the first blocking member and the second blocking member has a free end close to the environmental surface; 
 when the cleaning robot is located on a rigid ground, a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a minimum distance between the free end of the second blocking member and the rigid ground is a second distance, wherein the first distance is less than 5 mm, the second distance is less than 5 mm; and 
 when the base station performs a dust collection maintenance on the dust collection box, at least one of the first blocking member and the second blocking member is in an open state.