Surface cleaning systems

Abstract

The present invention relates to a surface cleaning system, the surface cleaning system comprising a surface cleaning device and a cleaning tray, the surface cleaning device comprising: a cleaning head having a cleaning liquid dispenser, a cleaning roller, a front suction port and a steam dispenser; a vertical body comprising: a suction source; a fluid supply system comprising a cleaning liquid supply tank, a steam generator fluidically connected to the cleaning liquid supply tank and configured to vaporize the cleaning liquid into steam, a first fluid pipeline capable of fluidly connecting the cleaning liquid supply tank to the cleaning liquid dispenser, and a second fluid pipeline capable of fluidly connecting the steam generator to the steam dispenser; and a dirty liquid recovery tank suitable for storing dirty liquid and dirt, the front suction port, the dirty liquid recovery tank and the suction source being fluidically connected in sequence; wherein, the cleaning tray is arranged independently of the surface cleaning device, and the cleaning tray is configured to dock with the surface cleaning device; wherein, the steam generator is automatically shut down during the docking of the surface cleaning device and the cleaning tray.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, in particular to a surface cleaning system capable of simultaneously utilizing cleaning liquid and steam to clean a surface. Background Art

[0002] Steam cleaning uses high-temperature steam to dissolve oil particles on the surface being cleaned, thereby cleaning the surface. Prior art surface cleaning equipment is capable of both wet cleaning and steam cleaning of the surface being cleaned. This surface cleaning equipment is equipped with a steam generator that converts cleaning fluid into high-temperature steam. After completing the surface cleaning operation, the surface cleaning equipment needs to be placed in a cleaning tray to self-clean the cleaning rollers and pipes through which the dirty liquid passes. This type of surface cleaning equipment typically requires no human supervision during self-cleaning, but during this process, the steam heater may be dehydrated, creating a safety hazard. Summary of the Invention

[0003] In view of the technical problem related to the above-mentioned surface cleaning equipment having potential safety hazards when performing self-cleaning, the purpose of the present invention is to provide a surface cleaning system that is safer to use.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a surface cleaning system, comprising a surface cleaning device and a cleaning tray, the surface cleaning device comprising: a cleaning head adapted to move on a surface to be cleaned and having a cleaning liquid dispenser, a cleaning roller, a front suction port, and a steam distributor; a vertical body, the lower portion of which is rotatably connected to the cleaning head, the vertical body comprising: a suction source; a fluid supply system comprising a cleaning liquid supply tank, a steam generator fluidically connected to the cleaning liquid supply tank and configured to vaporize the cleaning liquid into steam, a first fluid pipeline capable of fluidly connecting the cleaning liquid supply tank to the cleaning liquid dispenser, and a second fluid pipeline capable of fluidly connecting the steam generator to the steam distributor; and a dirty liquid recovery tank adapted to store dirty liquid and dirt, the front suction port, the dirty liquid recovery tank, and the suction source being fluidically connected in sequence; wherein the cleaning tray is arranged independently of the surface cleaning device, the cleaning tray is configured to dock with the surface cleaning device, and the steam generator is automatically shut down during docking of the surface cleaning device with the cleaning tray.

[0005] In the above technical solution, preferably, the upright body further includes a switch, which is configured to turn on and off the steam generator; the cleaning tray further includes a trigger component, which is configured to enable the switch to turn off the steam generator when the surface cleaning device is docked with the cleaning tray.

[0006] In the above preferred solution, further preferably, the switch is a normally closed switch.

[0007] In the above preferred embodiment, further preferably, the upright body includes a lower extension, and the switch is located within the lower extension; the trigger component is configured to abut the switch when the surface cleaning device is docked with the cleaning tray, thereby triggering the switch to turn off the steam generator. Further preferably, the lower extension is located at the rear lower portion of the upright body.

[0008] In the above technical solution, preferably, the cleaning tray includes a roller groove, and when the surface cleaning device is docked with the cleaning tray, the roller groove is aligned with the brush roller.

[0009] In the above technical solution, preferably, the cleaning head includes a base, the base being provided with a roller chamber having an opening, the cleaning roller being rotatably supported within the roller chamber with at least a portion of the cleaning roller positioned at the opening, the front suction port being in fluid communication with the roller chamber, the opening being formed in the lower end surface of the base. Further preferably, the steam distributor is located behind the opening and is provided with a plurality of steam outlets, the steam outlets being configured to face the surface to be cleaned so as to spray steam directly onto the surface to be cleaned.

[0010] According to the above preferred solution, it may be further preferred that a flexible partition is provided between the steam distributor and the opening.

[0011] According to the above preferred scheme, it can be further preferred that the cleaning head also includes a rear suction port arranged at the rear part of the base body, the rear suction port is located on the rear side of the steam distributor, and the rear suction port is configured to be fluidically connected to the fluid passage between the front suction port and the dirty liquid recovery tank.

[0012] Compared with the existing technology, the surface cleaning system provided by the present invention can improve the safety of the equipment by automatically shutting down the steam generator when the surface cleaning equipment is placed on the cleaning tray for self-cleaning operation, and can also improve the energy utilization rate and service life of the surface cleaning equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1A schematic three-dimensional diagram of a surface cleaning system provided by the present invention;

[0014] Figure 2 This is a three-dimensional schematic diagram of the surface cleaning device provided by the present invention after a portion of the rear base is removed;

[0015] Figure 3 for Figure 2 A partial enlarged view of point A shown;

[0016] Figure 4 A schematic diagram of the structural principle of the surface cleaning device provided by the present invention;

[0017] Figure 5 A side cross-sectional view of the cleaning head provided by the present invention Figure 1 ;

[0018] Figure 6 for Figure 5 Side cutaway view of the cleaning head shown Figure 2 , wherein the cleaning roller is removed from the roller groove;

[0019] Figure 7 The cleaning tray provided by the present invention;

[0020] Figure 8 This is a control circuit diagram of the surface cleaning system provided by the present invention. DETAILED DESCRIPTION

[0021] In order to describe the technical content, structural features, achieved purposes and effects of the invention in detail, the technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in the presence of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but are not necessarily exclusive. For example, without departing from the inventive concept, the specific shape, structure and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0022] For the purpose of description in relation to the accompanying drawings, the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer" and their derivatives are used in a defined positional relationship relative to the direction in which a user stands on the surface to be cleaned and pushes the surface cleaning device 10 (i.e., the pushing direction from back to front). As used herein, the term "rear side" refers to a position behind at least one other component, but does not necessarily mean behind all other components. However, it should be understood that the present invention can take various alternative orientations unless an opposite orientation is explicitly indicated.

[0023] Figure 1 The surface cleaning system 100 provided by the present invention is shown. The surface cleaning system 100 includes a surface cleaning device 10 and a cleaning tray 20 that can dock with the surface cleaning device 10. The surface cleaning device 10 is configured to clean the surface to be cleaned and can be placed on the cleaning tray 20 for self-cleaning.

[0024] Combine Figure 2 The surface cleaning device 10 is an upright cleaning device and includes a cleaning head 12 and an upright body 11 located above the cleaning head 12. The lower portion of the upright body 11 is pivotally connected to the cleaning head 12 and is configured to rotate between a rest position upright relative to the cleaning head 12 and a use position tilted backward relative to the cleaning head 12. When the surface cleaning device 10 is performing a cleaning operation, the cleaning head 12 is supported on the surface to be cleaned and is driven by the upright body 11, thereby moving over the surface to be cleaned.

[0025] The vertical body 11 includes a handle 13 arranged on the top, a casing 14 forming the skeleton of the vertical body 11, a suction source 15 installed on the inside of the casing 14, a fluid supply system located on the inside of the casing 12, and a dirty liquid recovery tank 16 detachably connected to the casing 12.

[0026] The handle 13 is configured to be suitable for a user to hold. The user can use the handle 13 to hold the surface cleaning device 10 with one hand and use it to push the cleaning head 12 of the surface cleaning device 10 back and forth on the surface to be cleaned in the backward tilted use position. Figure 8, a controller 113 capable of controlling the operation of each controlled component of the surface cleaning device 10 is provided in the surface cleaning device 10, and an operation interface 131 is also provided on the handle 13. The operation interface 131 is connected to the controller 113 signal and can send an operation signal to the controller 113 to control the operation of each controlled component, such as the rotation of the cleaning roller, the delivery and flow regulation of the cleaning liquid, the power regulation of the suction device, etc. The specific form of the operation interface 131 is not limited to a button, a trigger, a trigger, a switch, etc. In other embodiments, the operation interface can also be provided in other places of the surface cleaning device, such as on the top wall or side wall of the body at the bottom of the handle. The operation interface can also be a portable remote control or can be provided on a handheld terminal that can interact with the surface cleaning device.

[0027] The housing 14 is used to form part of the outer contour of the stand body 11, and on the other hand, it can also accommodate and support the remaining components of the stand body 11. The stand body 11 is provided with a rear cavity 121, and the housing 14 has a rear cover 141 that can close the rear cavity 121. The rear cover 141 is a component that can be removed by hand or with the help of a disassembly tool; Figure 2 As shown in FIG, when the rear cover 141 is removed from the housing 14, the steam generator 32 (see below), the first fluid pump 34 and the second fluid pump 36 (see below) are exposed.

[0028] Combine Figure 4 The fluid supply system includes a cleaning liquid supply tank 31 capable of storing and supplying cleaning liquid to the outside, a steam generator 32 in fluid communication with the cleaning liquid supply tank 31, a first fluid pipeline 33 for fluid communication between the cleaning liquid supply tank 31 and the cleaning liquid distributor 123 (located in the cleaning head 12, see below), and a second fluid pipeline 35 for fluid communication between the steam generator 32 and the steam distributor 125 (located in the cleaning head 12, see below). A first fluid pump 34 is disposed on the first fluid pipeline 33, and a second fluid pump 36 is disposed on the second fluid pipeline 35. Both the first fluid pump 34 and the second fluid pump 36 are capable of extracting cleaning liquid from the cleaning liquid supply tank 31 and transporting it downstream. Figure 8 As shown, the first fluid pump 34 and the second fluid pump 36 are both connected to the controller 113 by signals and are controlled by the controller 113 , and the steam generator 32 is connected to the controller 113 by signals via a switch 321 .

[0029] The cleaning liquid supply tank 31 includes at least one chamber for holding cleaning liquid; in other embodiments, the cleaning liquid supply tank may include multiple chambers. In this example, the cleaning liquid is water; in other embodiments, the cleaning liquid can also be other liquids (such as disinfectant or water with a detergent added). In this example, the cleaning liquid supply tank 31 is removably mounted to the housing 14, allowing the user to refill the cleaning liquid supply tank 31 at any time as needed. In other embodiments, the cleaning liquid supply tank can also be configured as a non-removable component.

[0030] The steam generator 32 is a steam conversion component that can heat the cleaning liquid provided by the cleaning liquid supply tank 31 to at least 100° C. to convert it into high-temperature steam for output. Figure 3 As shown, a lower extension portion 112 is provided on the rear side of the vertical body 11 , and a cavity 114 is formed in the lower portion of the lower extension portion 112 . A switch 321 for controlling the opening and closing of the steam generator 32 is arranged in the cavity 114 .

[0031] Combine Figure 8 Switch 321 is a normally closed switch (i.e., it remains closed without external interference) and is configured such that: when switch 321 is not externally triggered, steam generator 32 remains in the on state; when externally triggered, switch 321 controls steam generator 32 to be off. This switch can be a circuit node switch that directly controls the on and off of the steam generator power supply circuit, or a signal generator that generates a power-off signal. Switch 321 can be a mechanical switch or an electronic switch, and electronic switches are not limited to sensors and relays. The switch 321 controls the opening and closing of the steam generator 32 in a manner that is not limited to directly controlling the opening and closing of the steam generator 32, but can also indirectly control the opening and closing of the steam generator 32; for example, the switch and the steam generator can be configured to be connected to the controller via separate signals, and when the switch is triggered, a corresponding signal is sent to the controller, which turns off the steam generator, thereby achieving control over the steam generator; or the switch can be configured as a disconnectable circuit node on the steam generator power supply circuit, and when the switch is triggered, the power supply to the steam generator is disconnected to achieve the purpose of turning off the steam generator. Provided that the above functions are met, the specific electrical wiring method of the switch does not limit the scope of protection of the present invention.

[0032] See Figure 2 The cleaning head 12 includes a base 121 that forms its outer contour, and the base 122 is pivotally held on the lower side of the upright body 11 via a rotating joint (not shown) located at its upper portion. The rotating joint enables the upright body 11 to rotate between an upright rest position and a rearwardly tilted use position.

[0033] Figure 5-6 The internal structure of the cleaning head 12 is shown and described. A base 121 defines a roller chamber 18 with an opening 17. A cleaning roller 19 is rotatably supported within the roller chamber 18. A drive device (not shown) that drives the cleaning roller 19 is located within the base 121. In this example, the opening 17 is located at the lower end surface of the front portion of the base 121. The lower portion of the cleaning roller 19 extends through the opening 17 to contact the surface to be cleaned. A front suction port 122 is provided within the base 121, providing fluid communication between the roller chamber 18 and the suction source 15.

[0034] Combine Figure 4 The cleaning head 12 is also provided with a cleaning liquid dispenser 123 located on the inner side of the base 121. The cleaning liquid dispenser 123 extends into the roller chamber 18 and is configured to distribute the cleaning liquid transported by the first fluid pipeline 33 to the cleaning roller 19, so that the cleaning roller, which is wetted with the cleaning liquid, cleans the surface to be cleaned. In other embodiments, the cleaning liquid dispenser can also be provided at other locations of the base, such as the front side or front upper side of the cleaning roller, so as to apply the cleaning liquid directly to the surface to be cleaned or to apply the cleaning liquid to the surface to be cleaned and the cleaning roller at the same time. In this example, the outer side of the cleaning roller 19 is covered with cleaning elements that may have bristles, fabrics, or other cleaning elements. These cleaning elements are configured to be wetted by a cleaning liquid such as water.

[0035] The seat 121 is further provided with a flexible partition 124, a steam distributor 125 and a rear suction port 127 in sequence from front to rear on the rear side of the opening 17. The flexible partition 124 can block the dirty liquid on the surface to be cleaned from flowing to the rear side, so that it remains on the lower side of the opening 17.

[0036] The steam distributor 125 diffuses the steam, ensuring that the steam is applied as evenly as possible to the surface to be cleaned below the steam distributor 125. In this example, the steam distributor 125 is rectangular, with a plurality of steam outlets 126 disposed on its lower surface. In this example, the steam distributor 125 is detachably connected to the lower end of the base 122. In other embodiments, the two may be integrally formed.

[0037] The steam outlet 126 can apply the high-temperature steam generated by the steam generator 32 to the surface to be cleaned to achieve steam cleaning of the surface to be cleaned. In this example, the steam outlet 126 is configured to spray high-temperature steam directly onto the surface to be cleaned. In other embodiments, some cleaning components made of steam-permeable materials, such as breathable cleaning cloths, brushes, etc., can also be provided at the steam outlet. The provision of the cleaning components must ensure that the steam cannot be prevented from being applied to the surface to be cleaned; when designing the cleaning head, whether the steam output from the steam outlet is applied directly to the surface to be cleaned or applied to the surface to be cleaned after passing through a cleaning component made of a permeable material, it must be ensured that the temperature of the steam is still high enough when the steam contacts the surface to be cleaned, preferably the temperature reaches 100°C or above.

[0038] The rear suction port 127 is located behind the steam outlet 126 and is configured to draw nearby steam. The flexible barrier 124 also blocks the steam from flowing forward, trapping it below the steam outlet 126 and the rear suction port 127. The rear suction port 127 is a narrow opening extending left and right, capable of absorbing any residual liquid on the surface to be cleaned. This residual liquid includes any contaminated liquid not absorbed by the opening 17 and any condensation of high-temperature steam on the surface to be cleaned.

[0039] like Figure 4 As shown, the surface cleaning apparatus 10 is further provided with a dirty liquid pipeline 41, a main dirty liquid recovery line 42, and a branch dirty liquid recovery line 43. The dirty liquid pipeline 41 is disposed below the dirty liquid recovery tank 16 and is in fluid communication with the dirty liquid recovery tank 16. The dirty liquid recovery tank 16 is capable of storing dirty liquid removed from the surface to be cleaned. The suction source 15 is located above the dirty liquid recovery tank 16 and is in fluid communication with the dirty liquid recovery tank 16. The suction source 15 is capable of providing a continuous negative pressure to the dirty liquid recovery tank 16 and extracting gases mixed with the dirty liquid.

[0040] The main dirty liquid recovery path 42 fluidly connects the front suction port 122 and the dirty liquid pipeline 41. The front suction port 122, the main dirty liquid recovery path 42, and the dirty liquid pipeline 41 are sequentially connected to form the main path for dirty liquid recovery. The opening 17 can recover dirty liquid and dirt particles from the surface to be cleaned under the action of the above-mentioned negative pressure. The dirty liquid recovery branch path 43 fluidly connects the dirty liquid pipeline 41 and the rear suction port 127. The rear suction port 127, the dirty liquid recovery branch path 43, and the dirty liquid pipeline 41 are sequentially connected to form a branch path for dirty liquid recovery. The rear suction port 127 can suck dirty liquid and dirt particles from the surface to be cleaned under the action of the above-mentioned negative pressure. The main dirty liquid recovery path 42 and the dirty liquid recovery branch path 43 are both arranged inside the cleaning head 12. In this example, the dirty liquid recovery branch path 43 is directly connected to the main dirty liquid recovery path 42.

[0041] Figure 7The cleaning tray 20 of the surface cleaning system 100 is shown. The cleaning tray 20 includes a groove 21 suitable for placing the cleaning head 12 and a protrusion 22 protruding upward relative to the groove 21. The groove 21 includes a supporting surface 211 capable of supporting the surface cleaning device 10 and an outer wall 212 extending upward along the outer portion of the supporting surface 211. A roller groove 213 capable of accommodating the cleaning roller 19 is provided on the supporting surface 211. The roller groove 213 is located in the front part of the supporting surface 213 and corresponds to the position of the cleaning roller 19.

[0042] The raised portion 22 extends upward and is configured to be adapted to receive the lower extension portion 112 on the vertical body 11. A trigger component 322 corresponding to the switch 321 is provided at the upper end of the raised portion 22. The trigger component 322 is configured to be able to contact or sense the switch 321 and cause the switch 321 to be turned off. The form of the trigger component 322 is not limited to a push rod (corresponding to a mechanical switch 321), an inductor (corresponding to an inductor-type switch 321), and a trigger element of a corresponding relay (corresponding to a relay-type switch 321).

[0043] The following describes the operating principle of surface cleaning system 100: When surface cleaning apparatus 10 is used to clean a surface to be cleaned, steam generator 32, first fluid pump 34, second fluid pump 36, drive device, and suction source 15 are activated. A portion of the cleaning fluid in cleaning fluid supply tank 31 flows into first fluid conduit 33 and passes through first fluid pump 34 and fluid distributor 123. Fluid distributor 123 then distributes the cleaning fluid to cleaning roller 19, which then uses the cleaning fluid to clean the surface to be cleaned.

[0044] Another part of the cleaning liquid in the cleaning liquid supply tank 31 flows into the second fluid pipeline 35 and reaches the steam generator 32 through the second fluid pump 36. The steam generator 32 vaporizes the cleaning liquid into high-temperature steam. Under the action of its own pressure, the high-temperature steam flows along the second fluid pipeline 35 to the steam output port 126 of the steam distributor 125. The high-temperature steam output from the steam output port 126 then steam cleans the surface to be cleaned.

[0045] The suction source 14 forms a negative pressure at the dirty liquid recovery tank 16. Under the action of this negative pressure, the dirty liquid at the opening 17 passes through the roller chamber 18, the front suction port 122, the dirty liquid recovery main path 42 and the dirty liquid pipeline 41 to reach and be stored in the dirty liquid recovery tank 16; the rear suction port 127 can capture the residual dirty liquid and particles that are not sucked up from the opening 17, as well as the liquid condensed into water by the high-temperature steam, and collect them into the dirty liquid recovery main path 42 through the dirty liquid recovery branch path 43 and then pass through the dirty liquid pipeline 41 to finally reach the dirty liquid recovery tank 16.

[0046] When performing a self-cleaning operation on the surface cleaning device 10, the surface cleaning device 10 is placed on the cleaning tray 20 to achieve docking with the cleaning tray 20. At this time, the cleaning roller 19 is aligned with the roller groove 213, and the trigger component 221 contacts the switch 321, causing the switch 321 to switch from a closed state to an open state, thereby shutting down the steam generator 32. Subsequently, the first fluid pump 34, the drive device, and the suction source 15 are activated, and some of the cleaning fluid in the cleaning fluid supply tank 31 flows into the first fluid pipeline 33 and passes through the first fluid pump 34 and the fluid distributor 123. Thereafter, the fluid distributor 123 distributes the cleaning fluid to the cleaning roller 19, and the cleaning roller 19 uses the cleaning fluid to perform a self-cleaning operation.

[0047] Suction source 14 creates negative pressure in the waste liquid recovery tank 16. Under this negative pressure, waste liquid at opening 17 (i.e., roller groove 19) passes through roller chamber 18, front suction port 122, waste liquid recovery main path 42, and waste liquid pipeline 41, and is stored in waste liquid recovery tank 16. When surface cleaning device 10 is separated from cleaning tray 20, switch 321 disengages from trigger component 221, and the switch 321 switches from the open state back to the closed state.

[0048] The basic principles, main features and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims, the description and their equivalents.

Claims

1. A surface cleaning system, characterized in that: The surface cleaning system (100) comprises a surface cleaning device (10) and a cleaning tray (20), wherein the surface cleaning device (10) comprises: A cleaning head (12) adapted to move over a surface to be cleaned and comprising a cleaning liquid distributor (123), a cleaning roller (19), a front suction port (122), and a steam distributor (125); The vertical body (11) is rotatably connected at the lower part to the cleaning head (12), and the vertical body (11) includes: Suction source (15); A fluid supply system comprising a cleaning liquid supply tank (31), a steam generator (32) in fluid communication with the cleaning liquid supply tank (31) and configured to vaporize the cleaning liquid into steam, a first fluid pipeline (33) capable of fluidly connecting the cleaning liquid supply tank (31) to the cleaning liquid distributor (123), and a second fluid pipeline (35) capable of fluidly connecting the steam generator (32) to the steam distributor (125); and The dirty liquid recovery tank (16) is suitable for storing dirty liquid and dirt, and the front suction port (122), the dirty liquid recovery tank (16) and the suction source (15) are fluidically connected in sequence; wherein the cleaning tray (20) is provided independently of the surface cleaning device (10), the cleaning tray (20) is configured to be docked with the surface cleaning device (10), and the steam generator (32) is automatically turned off during the docking of the surface cleaning device (10) with the cleaning tray (20); The vertical body (11) further includes a switch (321) and a lower extension (112), wherein the switch (321) is located in the lower extension (112), and the switch (321) is a normally closed switch. The switch (321) is configured to be able to turn on and off the steam generator (32); the cleaning tray (20) further includes a trigger component (221), and the trigger component (221) is configured to abut against the switch (321) when the surface cleaning device (10) is docked with the cleaning tray (20), so as to trigger the switch (321) to turn off the steam generator (32).

2. The surface cleaning system according to claim 1, wherein The lower extension (112) is located at the rear lower portion of the vertical fuselage (11).

3. The surface cleaning system according to claim 1, wherein The cleaning tray (20) includes a roller groove (213), and when the surface cleaning device (10) is docked with the cleaning tray (20), the roller groove (213) is aligned with the cleaning roller (19).

4. The surface cleaning system according to claim 1, wherein: The cleaning head (12) includes a base (121), a roller chamber (18) having an opening (17) is provided on the base (121), the cleaning roller (19) is supported in the roller chamber (18) in a rotatable manner and at least a portion of the cleaning roller (19) is located at the opening (17), the front suction port (122) is fluidically connected to the roller chamber (18), and the opening (17) is opened at the lower end surface of the base (121).

5. The surface cleaning system according to claim 4, wherein: The steam distributor (125) is located at the rear side of the opening (17) and is provided with a plurality of steam output ports (126). The steam output ports (126) are configured to face the surface to be cleaned so as to spray steam directly onto the surface to be cleaned.

6. The surface cleaning system according to claim 5, wherein: A flexible partition (124) is provided between the steam distributor (125) and the opening (17).

7. The surface cleaning system according to claim 5, wherein: The cleaning head (12) further comprises a rear suction port (127) arranged at the rear of the base (121), the rear suction port (127) being located at the rear side of the steam distributor (125), and the rear suction port (127) being configured to be fluidically connected to a fluid passage between the front suction port (122) and the dirty liquid recovery tank (16).

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