US 12,144,475 B2
Surface cleaning apparatus
Zhuang Bian, Suzhou (CN)
Assigned to SUZHOU EUP ELECTRIC CO. LTD., Suzhou (CN)
Filed by SUZHOU EUP ELECTRIC CO. LTD., Suzhou (CN)
Filed on Jun. 27, 2023, as Appl. No. 18/214,869.
Application 18/214,869 is a division of application No. 17/033,543, filed on Sep. 25, 2020, granted, now 11,723,506.
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 2023/0337887 A1, Oct. 26, 2023
Int. Cl. A47L 11/40 (2006.01); A47L 9/04 (2006.01); A47L 11/30 (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)] 20 Claims
OG exemplary drawing
 
1. A surface cleaning apparatus, comprising:
a cleaning head adapted to move along a surface to be cleaned including a housing and a scrubbing arrangement, the scrubbing arrangement including a scrubbing mechanism arranged on the housing for scrubbing the surface by rubbing against the surface to be cleaned, and at least one driving motor connected to the scrubbing mechanism for driving the scrubbing mechanism to perform a scrubbing action;
a cleaning liquid supply tank adapted to store a cleaning liquid;
a steam generator in fluid communication with the cleaning liquid supply tank 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 scrubbing mechanism 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 system used to remove the used cleaning liquid and dirt from the surface to be cleaned and store the used cleaning liquid and dirt, the dirty liquid recovery system comprising a dirty liquid recovery tank used to store dirty liquid and dirt;
wherein the at least one steam outlet is arranged at a lower portion of the housing and configured to work simultaneously with at least one fluid outlet so as to heat the surface by overflowing 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.