Abstract: An extraction cleaner may include an upright body, a cleaning head pivotally coupled to the upright body, a supply tank coupled to the upright body and fluidly coupled to the cleaning head, a recovery tank coupled to the upright body and fluidly coupled to the cleaning head, and an agitator rotatably coupled to the cleaning head. The agitator may include a main body and a bristle strip extending helically around the main body and forming an acute attack angle with the main body that opens in a direction of rotation of the agitator during a cleaning operation of the extraction cleaner.

Abstract: An extraction cleaner may include a base, an upright body pivotally coupled to the base, a supply tank removably coupled to the upright body and a recovery tank removably coupled to the upright body. The base may include a non-removable door and a removable suction nozzle. At least one fluid dispensing nozzle may be provided on the door. The door may be pivotally coupled to the base for providing access to an agitator. The cleaner may include and auto-spray configuration. The cleaner may include a support on the upright portion for the recovery tank. The cleaner may include an additive tank received in a receptacle of the supply tank. The recovery tank may include a float and/or an airflow management configuration. The cleaner may include a cleaning tool and a suction changeover valve and/or a fluid changeover valve. The cleaner may include a mixing valve for supplying fluid to a fluid changeover valve.

Abstract: An extraction cleaner may include a base, an upright body pivotally coupled to the base, a supply tank removably coupled to the upright body and a recovery tank removably coupled to the upright body. The base may include a non-removable door and a removable suction nozzle. At least one fluid dispensing nozzle may be provided on the door. The door may be pivotally coupled to the base for providing access to an agitator. The cleaner may include and auto-spray configuration. The cleaner may include a support on the upright portion for the recovery tank. The cleaner may include an additive tank received in a receptacle of the supply tank. The recovery tank may include a float and/or an airflow management configuration. The cleaner may include a cleaning tool and a suction changeover valve and/or a fluid changeover valve. The cleaner may include a mixing valve for supplying fluid to a fluid changeover valve.

Abstract: An extraction cleaner may include a base, an upright body pivotally coupled to the base, a supply tank removably coupled to the upright body and a recovery tank removably coupled to the upright body. The base may include a non-removable door and a removable suction nozzle. At least one fluid dispensing nozzle may be provided on the door. The door may be pivotally coupled to the base for providing access to an agitator. The cleaner may include and auto-spray configuration. The cleaner may include a support on the upright portion for the recovery tank. The cleaner may include an additive tank received in a receptacle of the supply tank. The recovery tank may include a float and/or an airflow management configuration. The cleaner may include a cleaning tool and a suction changeover valve and/or a fluid changeover valve. The cleaner may include a mixing valve for supplying fluid to a fluid changeover valve.

Abstract: A window-cleaning robot provided with a closed wiper (13), comprising a rotating base (10) and an outer frame (20); said rotating base (10) being rotatably disposed on the outer frame (20); the bottom of said outer frame (20) being provided with a cleaning unit (21); said rotating base (10) being provided with a travel unit (11) and a suction cup (12); the bottom surface of the rotating base (10) also being provided with a wiper (13); said wiper (13) being disposed on the bottom surface such that the wiper (13) surrounds the rotating base (10) in a closed shape; the travel unit (11) and/or the suction cup (12) being enclosed within said closed shape. The wiper (13) is entirely closed such that regardless of where the robot travels, 360° wiping can be accomplished, effectively preventing the travel unit (11) and the suction cup (12) from becoming wet, resulting in more effective wiping and effectively preventing slippage.

Abstract: An air-releasing valve for use in a suction apparatus and a suction robot having the air-releasing valve are provided. The air-releasing valve comprises an activation unit and an air-releasing valve retaining base (3). An air-releasing hole (11) in communication with a negative pressure chamber (18) of the suction apparatus is provided on the air-releasing valve retaining base (3). The activation unit is provided on the air-releasing valve retaining base (3) and is movable relative to the air-releasing valve retaining base (3) to open the air-releasing hole (11). A switch (4) is provided on the air-releasing valve retaining base (3). The activation unit opens the air-releasing hole (11) and triggers the switch (4) to shut off a vacuuming apparatus (14) of the suction apparatus simultaneously. The air-releasing valve is capable of rapidly releasing air from the suction apparatus and shutting off the vacuuming apparatus (14) in a timely manner.

Abstract: An air-releasing valve for use in a suction apparatus and a suction robot having the air-releasing valve are provided. The air-releasing valve comprises an activation unit and an air-releasing valve retaining base (3). An air-releasing hole (11) in communication with a negative pressure chamber (18) of the suction apparatus is provided on the air-releasing valve retaining base (3). The activation unit is provided on the air-releasing valve retaining base (3) and is movable relative to the air-releasing valve retaining base (3) to open the air-releasing hole (11). A switch (4) is provided on the air-releasing valve retaining base (3). The activation unit opens the air-releasing hole (11) and triggers the switch (4) to shut off a vacuuming apparatus (14) of the suction apparatus simultaneously. The air-releasing valve is capable of rapidly releasing air from the suction apparatus and shutting off the vacuuming apparatus (14) in a timely manner.

Abstract: A window-cleaning robot provided with a closed wiper (13), comprising a rotating base (10) and an outer frame (20); said rotating base (10) being rotatably disposed on the outer frame (20); the bottom of said outer frame (20) being provided with a cleaning unit (21); said rotating base (10) being provided with a travel unit (11) and a suction cup (12); the bottom surface of the rotating base (10) also being provided with a wiper (13); said wiper (13) being disposed on the bottom surface such that the wiper (13) surrounds the rotating base (10) in a closed shape; the travel unit (11) and/or the suction cup (12) being enclosed within said closed shape. The wiper (13) is entirely closed such that regardless of where the robot travels, 360° wiping can be accomplished, effectively preventing the travel unit (11) and the suction cup (12) from becoming wet, resulting in more effective wiping and effectively preventing slippage.