US 11,723,506 B2
Surface cleaning apparatus
Zhuang Bian, Suzhou (CN)
Assigned to SUZHOU EUP ELECTRIC CO. LTD., Jiangsu (CN)
Filed by SUZHOU EUP ELECTRIC CO. LTD., Suzhou (CN)
Filed on Sep. 25, 2020, as Appl. No. 17/33,543.
Claims priority of application No. 202010559797.4 (CN), filed on Jun. 18, 2020; and application No. 202010709830.7 (CN), filed on Jul. 22, 2020.
Prior Publication US 2021/0393102 A1, Dec. 23, 2021
Int. Cl. A47L 11/40 (2006.01); A47L 11/30 (2006.01); A47L 9/04 (2006.01)
CPC A47L 11/4086 (2013.01) [A47L 9/0477 (2013.01); A47L 11/302 (2013.01); A47L 11/4083 (2013.01); A47L 11/4088 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A surface cleaning apparatus, comprising:
a suction source;
a cleaning head adapted to move along a surface to be cleaned and including a housing and a cleaning roller, the housing provided with a roller chamber having an opening in a lower portion of the housing and a front suction mouth in fluid communication with the roller chamber and the suction source, and the cleaning roller positioned in the roller chamber in such a way as to be able to rotate and at least a portion of the cleaning roller extending through the opening configured to contact the surface to be cleaned;
a cleaning liquid supply tank adapted to store cleaning liquid;
a steam generator in fluid communication with the supply tank and configured to heat liquid to generate steam;
a first fluid delivery unit comprising at least one cleaning liquid outlet for applying the cleaning liquid in the cleaning liquid supply tank to the cleaning roller and/or the surface to be cleaned;
a second fluid delivery unit comprising at least one steam outlet for applying the steam generated by the steam generator to the surface to be cleaned; and
a dirty liquid recovery tank configured to accept dirty liquid and dirt in fluid communication with the front suction mouth;
wherein the at least one steam outlet is arranged at the lower portion of the housing and configured to work simultaneously with the at least one fluid outlet so as to heat the surface by overflowing the steam to the surface during the process of cleaning the surface with the cleaning liquid to accelerate the evaporation of residual cleaning liquid on the surface.