Cleaning apparatus

Abstract

The present disclosure relates to a cleaning apparatus, comprising a floor brush assembly, which comprises: a floor brush housing, a roller brush, a roller brush cover assembly and a steam unit. The roller brush is rotationally connected to the floor brush housing and is configured to clean a working surface; the roller brush cover assembly comprises a roller brush cover body and a steam output portion, the steam output portion being arranged on the roller brush cover body and being configured to supply steam to the working surface; and the steam unit comprises a steam generation module arranged in the floor brush housing and configured to deliver steam to the steam output portion. The steam unit further comprises a gas-liquid separation module, wherein the gas-liquid separation module is configured to receive steam generated by the steam generation module, perform gas-liquid separation and then deliver processed steam to the steam output portion; a liquid discharge port is provided at the bottom of the gas-liquid separation module, the roller brush cover body is provided with a liquid discharge channel, and the floor brush housing is provided with a flow guide member; and liquid separated by the gas-liquid separation module is configured to flow to the roller brush sequentially through the liquid discharge port, the liquid discharge channel and the flow guide member.

Description

Cleaning device

[0001] The present application claims priority to the Chinese patent application No. 202422169682.0, filed on September 4, 2024, and entitled "Cleaning device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the field of steam devices, in particular to a cleaning device. BACKGROUND

[0003] With the development of social productivity, people's living standards are constantly improving. On the premise of material foundation, people begin to use various tools to reduce labor to improve the quality of home life, and household cleaning devices emerge as the times require. Among many household cleaning devices, steam floor cleaners that have both sewage suction and steam cleaning capabilities have gained a large number of consumers' favor due to their strong floor cleaning capabilities.

[0004] Steam floor cleaners have good effect on cleaning oil stains on the floor, which can effectively help users clean the kitchen floor and easily sterilize the floor. However, the steam floor cleaners on the market currently have a serious steam liquefaction and dripping phenomenon. The steam sprayed on the roller brush or the floor contains a high amount of liquid, which makes the floor prone to leaving water marks, and the cleaned floor is too wet and not easy to dry, resulting in poor user experience. At the same time, the liquefied condensate generated during steam transmission tends to accumulate at the steam nozzle. On the one hand, it can cause the condensate to drip from the steam nozzle after the floor cleaner is turned off, resulting in residual water on the floor. On the other hand, when the user reboots the steam function, the steam nozzle will first spray the residual condensate in the steam channel, causing the floor to be wet. SUMMARY

[0005] The present disclosure provides a cleaning device and a steam system to solve the problems in the prior art.

[0006] According to a first aspect of the present disclosure, a cleaning device is provided, comprising a floor brush assembly, the floor brush assembly comprising:

[0007] a floor brush housing;

[0008] a roller brush rotatably connected to the floor brush housing and configured to clean a working surface;

[0009] a roller brush cover assembly comprising a roller brush cover body and a steam output portion, the roller brush cover body and the floor brush housing enclosing a roller brush cavity configured to cooperate with the roller brush; the steam output portion is provided on the roller brush cover body and configured to provide steam to the working surface;

[0010] a steam unit comprising a steam generation module for delivering steam to a steam output,

[0011] The steam unit further comprises a gas-liquid separation module configured to receive steam generated by the steam generation module and deliver the steam to the steam output after gas-liquid separation, the gas-liquid separation module having at least two regions with different cross-sectional areas arranged along a steam flow direction, and a region upstream of a steam flow path has a smaller cross-sectional area than a region downstream of the steam flow path.

[0012] According to a second aspect of the present disclosure, a cleaning device is provided, comprising a floor brush assembly, the floor brush assembly comprising:

[0013] a floor brush housing;

[0014] a rolling brush rotationally connected to the floor brush housing and configured to clean a working surface;

[0015] a rolling brush cover assembly comprising a rolling brush cover body and a steam output arranged on the rolling brush cover body and configured to provide steam to the working surface;

[0016] a steam unit comprising a steam generation module arranged in the floor brush housing for delivering steam to the steam output, characterized in that:

[0017] The steam unit further comprises a gas-liquid separation module configured to receive steam generated by the steam generation module and deliver the steam to the steam output after gas-liquid separation; the gas-liquid separation module is provided with a liquid discharge opening at the bottom, the rolling brush cover body is provided with a liquid discharge channel, and the floor brush housing is provided with a drainage member; the liquid separated by the gas-liquid separation module is configured to flow to the rolling brush in sequence through the liquid discharge opening, the liquid discharge channel, and the drainage member.

[0018] In one embodiment, the liquid discharge channel is located below the liquid discharge opening, and the drainage member is located below the liquid discharge channel; the liquid discharged from the liquid discharge opening is configured to flow to the rolling brush in sequence through the liquid discharge channel and the drainage member under the action of gravity.

[0019] In one embodiment, the drainage member comprises a wiper in contact with the rolling brush.

[0020] In one embodiment, the floor brush assembly further comprises a clean water tank for supplying liquid to the steam generation module, the clean water tank is located above the gas-liquid separation module, and the rolling brush cover body is located below the gas-liquid separation module; the gas-liquid separation module is at least partially clamped between the clean water tank and the rolling brush cover body.

[0021] In one embodiment, the gas-liquid separation module has a certain degree of freedom relative to the rolling brush cover body.

[0022] In one embodiment, a steam baffle is arranged inside the rolling brush cover body, the steam baffle is configured to be extended by the rolling brush cover body to be in interference fit with the rolling brush, and the outlet of the liquid discharge channel is arranged at the rear side of the steam baffle.

[0023] In one embodiment, the gas-liquid separation module is provided with a steam outlet for discharging steam, the steam output part includes a steam jet member, and a steam channel inside the rolling brush cover body is used to connect the steam outlet to the steam jet member.

[0024] In one embodiment, the rolling brush cover body includes a body part for enclosing the rolling brush cavity, and a decorative cover plate exposed on the outside, and the steam channel is an arc-shaped pipeline arranged between the body part and the decorative cover plate.

[0025] In one embodiment, the gas-liquid separation module includes a channel cavity and a separation cavity that are in communication with each other; the steam generated by the steam generation module is configured to sequentially pass through the channel cavity and the separation cavity and enter the steam output part; wherein the cross-sectional area of the separation cavity along the direction perpendicular to the steam flow direction is configured to be greater than the cross-sectional area of the channel cavity along the direction perpendicular to the steam flow direction.

[0026] In one embodiment, the axis direction of the channel cavity is referred to as the X-axis direction, the direction perpendicular to the X-axis and in the same horizontal plane is referred to as the Y-axis direction, and the thickness direction of the gas-liquid separation module is referred to as the Z-axis direction; the separation cavity is configured to have a size in the Y-axis direction that is greater than the size of the channel cavity in the Y-axis direction; and / or, the separation cavity is configured to have a size in the Z-axis direction that is greater than the size of the channel cavity in the Z-axis direction.

[0027] In one embodiment, a blocking part is arranged in the separation cavity adjacent to the channel cavity, and in the Z-axis direction and the Y-axis direction, the size of the blocking part is configured to be not less than the size of the channel cavity.

[0028] In one embodiment, the gas-liquid separation module is provided with a steam outlet for discharging steam on the separation cavity wall surface, and the steam outlet is arranged staggered with the channel cavity in the extension direction of the channel cavity.

[0029] In one embodiment, the bottom of the separation cavity is provided with the liquid discharge port, and an automatic liquid discharge device is arranged in the separation cavity; the automatic liquid discharge device includes a sealing member for sealing the liquid discharge port.

[0030] In one embodiment, the brush assembly further comprises a water tank arranged on the brush housing, the gas-liquid separation module and the roller brush cover assembly are configured to be connected to the water tank; the gas-liquid separation module is configured to be detachably connected to the brush housing together with the water tank and the roller brush cover assembly.

[0031] In one embodiment, the gas-liquid separation module is arranged between the water tank and the roller brush cover body; the roller brush cover body is provided with a first accommodating groove at the top, and the bottom of the gas-liquid separation module is provided with a first matching part extending into the first accommodating groove; the first matching part and the first accommodating groove have an assembly gap therebetween.

[0032] One beneficial effect of the present disclosure is that by arranging the gas-liquid separation module and making the steam generated by the steam generation module pass through the gas-liquid separation module for gas-liquid separation before being delivered to the steam output part, the liquid content in the steam sprayed by the steam output part is greatly reduced. During the cleaning process, the steam output part can spray steam onto the working surface, thereby improving the cleaning and sterilization effect. Since the liquid content in the steam is low, liquefied water droplets are effectively avoided, the working surface after cleaning can be quickly dried, and water marks are not easily left, thereby improving the user's experience.

[0033] Another beneficial effect of the present disclosure is that the bottom of the gas-liquid separation module is provided with a liquid discharge port, the roller brush cover body is provided with a liquid discharge channel, and the brush housing is provided with a drainage member; the liquid separated by the gas-liquid separation module flows to the roller brush through the liquid discharge port, the liquid discharge channel and the drainage member in sequence. In this way, the liquid from the liquid discharge port can be drained to the drainage member and flow to the roller brush through the drainage member, thereby avoiding its dripping to the ground to form water stains.

[0034] Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments thereof, with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0036] FIG. 1 is a cross-sectional view of a brush assembly of the present disclosure;

[0037] FIG. 2 is a partial enlarged view of a portion of FIG. 1;

[0038] FIG. 3 is a partial enlarged view of another portion of FIG. 1;

[0039] FIG. 4 is an exploded view of the brush assembly of the present disclosure;

[0040] FIG. 5 is a structural schematic view of a water tank, a roller brush cover assembly and a gas-liquid separation module of the present disclosure;

[0041] Fig. 6 is an exploded view of the water tank, the rolling brush cover assembly and the gas-liquid separation module of the present disclosure;

[0042] Fig. 7 is a sectional view of the gas-liquid separation module of the present disclosure;

[0043] Fig. 8 is an exploded view of the gas-liquid separation module of the present disclosure;

[0044] Fig. 9 is an exploded view of the gas-liquid separation module of the present disclosure from another angle;

[0045] Fig. 10 is a top view of the gas-liquid separation module of the present disclosure;

[0046] Fig. 11 is a sectional view of the gas-liquid separation module of another embodiment of the present disclosure;

[0047] Fig. 12 is an exploded view of the gas-liquid separation module of another embodiment of the present disclosure;

[0048] Fig. 13 is an exploded view of the gas-liquid separation module of another embodiment of the present disclosure from another angle.

[0049] The one-to-one correspondence between the names of components and reference numerals in Figs. 1-13 is as follows: 1, brush housing; 2, rolling brush; 3, rolling brush cover assembly; 31, rolling brush cover body; 310, rolling brush cavity; 311, first accommodating groove; 312, liquid discharge channel; 32, steam output portion; 321, steam channel; 322, air jet; 3221, steam jet hole; 33, steam baffle; 4, steam generation module; 40, heating cavity; 41, exhaust valve; 411, valve core; 412, elastic member; 42, sealing member; 43, liquid inlet; 5, gas-liquid separation module; 501, channel cavity; 502, separation cavity; 51, outer shell; 511, first matching portion; 512, second accommodating groove; 52, gas outlet; 53, liquid discharge outlet; 54, abutting portion; 541, top abutting member; 55, floating member; 56, floating cavity; 561, turbulence rib; 562, opening; 57, blocking portion; 58, limiting portion; 6, water spraying plate; 7, water tank; 71, liquid injection portion; 8, suction outlet. DETAILED DESCRIPTION

[0050] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. Note that the relative arrangement, numerical expressions, and numerical values of components and steps set forth in these embodiments are not limiting to the scope of the present disclosure unless otherwise specifically stated.

[0051] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way limiting to the scope of the present disclosure and its applications or uses.

[0052] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art(s) can not be discussed in detail herein, but should be considered within the scope of the present disclosure.

[0053] It should be noted that like reference numerals and letters refer to like items throughout the several views, and each of these like items should not be discussed further once defined in one view but in subsequent views.

[0054] In the present disclosure, "upper", "lower", "front", "back", "left", "right", and the like are used to denote relative positional relationship between relevant parts, and not to limit the absolute position of these relevant parts.

[0055] In the present disclosure, "first", "second", and the like are used to distinguish from each other, and not to indicate importance and order, and the premise of each other.

[0056] In the present disclosure, "equal", "same", and the like are not strictly limited in the mathematical and / or geometric sense, but also include the error allowed by the person skilled in the art in manufacturing or using.

[0057] Referring to FIG. 1, the present disclosure provides a cleaning device, which can be a steam floor cleaning machine, a steam mop, a cloth cleaning machine, and the like. In an embodiment of the present disclosure, the cleaning device is a handheld cleaning device, such as a handheld cleaning machine, a handheld vacuum cleaner, and the like. Similarly, the cleaning device can also be a robot sweeper, a robot mop, a robot with sweeping and mopping functions, and the like.

[0058] The cleaning device in the present embodiment is a handheld steam floor cleaning machine. The cleaning device includes a machine body, a handheld portion, and a floor brush assembly connected below the machine body. Specifically, the handheld portion is connected to the machine body, so as to facilitate the user to manually control the cleaning device; the floor brush assembly is rotatably connected to the machine body, so that the floor brush assembly can be in contact with the working surface during the cleaning of the working surface, thereby achieving the purpose of cleaning the dirt on the working surface.

[0059] As shown in FIG. 1, the floor brush assembly includes a floor brush housing 1, a roller brush 2, a roller brush cover assembly 3, and a steam unit. The floor brush housing 1 is provided with a dirt suction port 8, which can be connected to a sewage tank on the machine body through a dirt suction channel, so that the cleaning device can suck the dirt at the dirt suction port 8 into the sewage tank. The roller brush 2 is rotatably connected to the floor brush housing 1 and is configured to clean the working surface. During use, the roller brush 2 rotates relative to the working surface, thereby achieving the cleaning of the working surface.

[0060] Referring to FIG. 1, FIG. 4 and FIG. 5, the roller brush cover assembly 3 comprises a roller brush cover body 31 and a steam output part 32, wherein, as shown in FIG. 5, the roller brush cover body 31 and the floor brush housing 1 enclose a roller brush cavity 310 for cooperating with the roller brush 2. The roller brush cavity 310 can have a shape adapted to the roller brush 2, and the roller brush 2 extends out of the lower end of the roller brush cavity 310 to contact the working surface. The roller brush 2 can be protected by the roller brush cavity 310, and at the same time, the dirt can be prevented from being thrown out when the roller brush 2 rotates.

[0061] The steam output part 32 is arranged on the roller brush cover body 31 and is configured to provide steam to the working surface. The high-temperature steam can soften stubborn stains and has good sterilization effect, thereby improving the cleaning effect of the roller brush 2 on the working surface. In an embodiment of the present disclosure, referring to FIG. 1, FIG. 4 to FIG. 6, the steam output part 32 comprises a steam passage 321 arranged in the roller brush cover body 31, and a jet part 322 provided with at least two steam injection holes 3221, and the steam injection holes 3221 are configured to face the working surface. The roller brush cover body 31 can comprise a body part for enclosing the roller brush cavity 310, and a decorative cover plate exposed on the outside, and the steam passage 321 can be an arc-shaped pipeline arranged between the body part and the decorative cover plate.

[0062] The steam passage 321 is used for conveying steam to the jet part 322. As shown in FIG. 5, the steam injection holes 3221 on the jet part 322 can be arranged along the axis direction of the roller brush 2. The distance between adjacent steam injection holes 3221 should not be too large, and the spacing of each steam injection hole 3221 can be substantially uniform, so that the steam sprayed by the jet part 322 has continuity, and the steam can cover the roller brush 2 and / or the working surface as uniformly as possible. In addition, the steam sprayed by the two steam injection holes 3221 farthest apart can exceed the position of the two side edges of the roller brush 2, thereby improving the steam coverage range, and further, when the cleaning equipment is used for edge cleaning, the dead angle positions such as wall edge and cabinet edge which are not easy to clean can also be covered by the steam, thereby improving the cleaning effect of the cleaning equipment.

[0063] Referring to FIG. 1 and FIG. 4, the steam unit comprises a steam generation module 4 and a gas-liquid separation module 5, wherein the steam generation module 4 is used for conveying steam to the steam output part 32, and further, the steam generation module 4 is used for heating liquid to form steam and / or hot water. In an embodiment of the present disclosure, referring to FIG. 3, the steam generation module 4 comprises a heating cavity 40 for containing a certain amount of liquid and heating the liquid to form steam and / or hot water. The steam flowing out of the steam generation module usually contains a certain amount of liquid water, and during the steam conveying process, as the ambient temperature decreases, part of the steam will condense, thereby increasing the water content in the steam. In order to reduce the water content in the steam, the present disclosure provides the gas-liquid separation module 5.

[0064] The gas-liquid separation module 5 is configured to communicate the steam generation module 4 and the steam output portion 32, specifically, the gas-liquid separation module 5 is configured to receive the steam generated by the steam generation module 4 and transport to the steam output portion 32 after gas-liquid separation, it can be understood that the water content in the steam obtained after gas-liquid separation is greatly reduced. The steam separated by the gas-liquid separation module 5 is configured to be transported to the steam injection hole 3221 through the steam channel 321, so that the steam is injected onto the working surface through the steam injection hole 3221, and the content of liquefied condensed water in the steam is effectively reduced.

[0065] Further, the gas-liquid separation module 5 has at least two regions with different cross-sectional areas arranged along the steam flow direction, and the cross-sectional area of the region upstream of the steam flow path is smaller than that of the region downstream of the steam flow path. Based on Bernoulli's principle, when the fluid flows from the region with smaller cross-sectional area to the region with larger cross-sectional area, the flow rate of the gas-liquid mixture will be reduced, and the mixture can stay in the region with larger cross-sectional area for a certain period of time and realize gas-liquid separation under the action of gravity. Further improve the effect of gas-liquid separation. The cross-sectional area of the internal chamber of the gas-liquid separation module 5 of the present disclosure is suddenly enlarged, thereby improving the effect of gas-liquid separation.

[0066] The present disclosure sets the gas-liquid separation module 5, and makes the steam generated by the steam generation module 4 pass through the gas-liquid separation module 5 for gas-liquid separation before being transported to the steam output portion 32, so that the liquid content in the steam sprayed by the steam output portion 32 is greatly reduced. During cleaning, the steam output portion 32 can spray steam onto the working surface, thereby improving the cleaning and sterilization effect. Because the liquid content in the steam is low, the liquefied water droplets are effectively avoided, the working surface after cleaning can be quickly dried, and water marks are not easy to remain, thereby improving the user's experience.

[0067] In one embodiment of the present disclosure, referring to FIGS. 1, 4 and 5, the brush assembly further includes a clean water tank 7 arranged on the brush housing 1, and the clean water tank 7 can store clean water or cleaning liquid, which can at least supply liquid to the roller brush 2 and the steam generation module 4. As shown in FIG. 5, the gas-liquid separation module 5 and the roller brush cover assembly 3 are configured to be fixedly connected to the clean water tank 7, and the gas-liquid separation module 5 is configured to be detachably connected to the brush housing 1 together with the clean water tank 7 and the roller brush cover assembly 3. Specifically, the gas-liquid separation module 5 and the roller brush cover assembly 3 can be fixed to the clean water tank 7 by means of, for example, screws, ultrasonic welding, buckle fixing or interference fixing, thereby forming an integral structure of the three components. The integral structure can be detachably connected to the brush housing 1, and the user can manually detach it, thereby manually refilling the clean water tank 7, and manually cleaning the roller brush cover assembly 3 and the gas-liquid separation module 5.

[0068] In one specific embodiment of the present disclosure, the gas-liquid separation module 5 is configured to be located between the clean water tank 7 and the rolling brush cover body 31, the clean water tank 7 is located above the gas-liquid separation module 5, the rolling brush cover body 31 is located below part of the gas-liquid separation module 5, and the gas-liquid separation module 5 is at least partially clamped between the clean water tank 7 and the rolling brush cover body 31. As shown in FIG. 4, the top of the rolling brush cover body 31 is provided with a first accommodating groove 311, and as shown in FIG. 7, the bottom of the gas-liquid separation module 5 is provided with a first matching part 511 extending into the first accommodating groove 311. The first matching part 511 can be a step structure formed on the bottom of the shell 51 of the gas-liquid separation module 5. When the gas-liquid separation module 5 and the rolling brush cover assembly 3 are respectively fixedly connected to the clean water tank 7, the first matching part 511 is accommodated in the first accommodating groove 311, thereby optimizing the layout of the components of the cleaning device and improving the assembly compactness between the rolling brush cover body 31 and the gas-liquid separation module 5.

[0069] The first matching part 511 and the first accommodating groove 311 can have an assembly gap, so that the gas-liquid separation module 5 has a certain degree of freedom of movement relative to the rolling brush cover body 31. When the user installs the overall structure composed of the clean water tank 7, the rolling brush cover assembly 3 and the gas-liquid separation module 5 on the floor brush housing 1, in addition to installing the structure in place, the gas-liquid separation module 5 also needs to be accurately docked to the steam generation module 4. The gas-liquid separation module 5 of the present embodiment has a certain degree of freedom of movement, which facilitates the installation of the interface of the gas-liquid separation module 5 and the corresponding steam interface, thereby reducing the installation precision requirement, and the user can simply and quickly complete the docking and installation.

[0070] Referring to FIGS. 5 and 8, the top of the shell 51 of the gas-liquid separation module 5 is provided with a second accommodating groove 512, the bottom of the clean water tank 7 can be provided with a matching groove matched with the upper part of the shell 51, and a second matching part located in the matching groove is matched with the second accommodating groove 512. When the gas-liquid separation module 5 and the rolling brush cover assembly 3 are respectively fixedly connected to the clean water tank 7, the upper part of the shell 51 is accommodated in the matching groove, and the second matching part is accommodated in the second accommodating groove 512, thereby optimizing the layout of the components of the cleaning device and improving the assembly compactness between the rolling brush cover body 31 and the gas-liquid separation module 5.

[0071] In one embodiment of the present disclosure, referring to FIGS. 3 and 4, the steam generation module 4 includes a liquid inlet 43 and an exhaust valve 41 arranged adjacent to each other, the liquid inlet 43 is used to communicate with the clean water tank 7, and the exhaust valve 41 is used to communicate with the gas-liquid separation module 5. When the user installs the overall assembly composed of the clean water tank 7, the rolling brush cover assembly 3 and the gas-liquid separation module 5, the clean water tank 7 needs to be docked to the liquid inlet 43, and at the same time, the gas-liquid separation module 5 needs to be docked to the exhaust valve 41. The present disclosure arranges the liquid inlet 43 and the exhaust valve 41 adjacent to each other, thereby improving the compactness of the two, thereby facilitating the docking operation of the user.

[0072] Specifically, referring to FIG. 5, the bottom of the clean water tank 7 is provided with a liquid injection part 71, which can protrude relative to the bottom surface of the clean water tank 7, so as to be connected to the liquid inlet 43 to supply liquid to the steam generating module 4.

[0073] As shown in FIG. 3 and FIG. 4, the gas-liquid separation module 5 is provided with a connecting part 54, and the connecting part 54 is provided with a top abutting part 541. During the installation of the gas-liquid separation module 5, the exhaust valve 41 is configured to protrude into the connecting part 54, so that the top abutting part 541 opens the exhaust valve 41. The connecting part 54 can be a reverse funnel-shaped opening formed by the shell 51, and during the installation, the flared slope of the connecting part 54 can play a guiding role, so as to facilitate the accurate protrusion of the upward protruding exhaust valve 41 into the connecting part 54. The exhaust valve 41 is provided with a sealing part 42, which can be a silica gel sealing ring sleeved on the exhaust valve 41. After the exhaust valve 41 protrudes into the connecting part 54, the sealing part 42 can cooperate with the flared slope of the connecting part 54 to form an airtight structure, so as to avoid the leakage of steam output by the exhaust valve 41.

[0074] As shown in FIG. 3, the exhaust valve 41 includes a valve core 411 and an elastic part 412 pre-pressed below the valve core 411. In a natural state, the valve core 411 has a tendency to move upward under the elastic force of the elastic part 412, so as to seal the steam in the heating cavity 40. After the exhaust valve 41 protrudes into the connecting part 54, the top abutting part 541 provided on the inner wall of the top of the shell 51 and extending downward can push the valve core 411 and make it move downward, thereby opening the exhaust valve 41; the elastic part 412 is compressed and deformed in this process, and the steam can flow into the gas-liquid separation module 5 under the action of the gas pressure in the heating cavity 40. When the gas-liquid separation module 5 is detached from the brush housing 1 together with the clean water tank 7 and the brush cover assembly 3, the top abutting part 541 is separated from the valve core 411, and the valve core 411 is reset under the elastic force of the elastic part 412, thereby closing the exhaust valve 41 and avoiding the spilling of steam to scald the user.

[0075] As shown in FIG. 4, the steam generating module 4 is configured to be arranged in the brush housing 1, and the liquid inlet 43 and the exhaust valve 41 are configured to be exposed through the top surface of the brush housing 1. The liquid inlet 43 and the exhaust valve 41 can be arranged in the axial direction of the brush 2, and correspondingly, as shown in FIG. 5, the liquid injection part 71 and the connecting part 54 used for connecting the liquid inlet 43 and the exhaust valve 41 respectively are also arranged in the axial direction of the brush 2. When the overall structure composed of the clean water tank 7, the brush cover assembly 3 and the gas-liquid separation module 5 is installed on the brush housing 1, the liquid injection part 71 and the connecting part 54 can be connected to the liquid inlet 43 and the exhaust valve 41 respectively, thereby simplifying the installation steps and improving the user experience.

[0076] In one embodiment of the present disclosure, referring to FIG. 7, the gas-liquid separation module 5 comprises a housing 51 which can be formed by a top cover and a bottom cover. The housing 51 is provided with a channel cavity 501 and a separation cavity 502 which are in communication with each other. The channel cavity 501 is in communication with the vapor generation module 4, and the separation cavity 502 is in communication with the vapor output 32. The vapor generated by the vapor generation module 4 is configured to sequentially pass through the channel cavity 501, the separation cavity 502 and enter the vapor output 32. The vapor generation module 4 is connected to the channel cavity 501 through a docking portion 54. Due to the large gas pressure in the vapor generation module 4, the gas-liquid mixture can naturally flow towards the separation cavity 502 after entering the channel cavity 501 (referring to the view direction of FIG. 7, i.e. from right to left).

[0077] The cross-sectional area of the separation cavity 502 along the direction perpendicular to the vapor flow direction is configured to be larger than the cross-sectional area of the channel cavity 501 along the direction perpendicular to the vapor flow direction. Based on the Bernoulli principle, when the fluid flows from the channel cavity 501 with a smaller cross-sectional area into the separation cavity 502 with a larger cross-sectional area, the flow rate of the gas-liquid mixture will decrease. In the separation cavity 502, the liquid phase in the low-speed fluid will be separated to the bottom of the separation cavity 502 under the action of gravity, and the vapor will continue to flow at the upper position of the separation cavity 502. The flow rate difference between the gas and liquid phases is obvious, thereby realizing gas-liquid separation. The cross-sectional area of the internal cavity of the gas-liquid separation module 5 of the present disclosure is abruptly enlarged, thereby improving the effect of gas-liquid separation.

[0078] In one embodiment of the present disclosure, referring to FIG. 7 and FIG. 10, the axis direction of the channel cavity 501 is denoted as the X-axis direction, the direction perpendicular to the X-axis and in the same horizontal plane is denoted as the Y-axis direction, and the thickness direction of the gas-liquid separation module 5 is denoted as the Z-axis direction; the separation cavity 502 is configured to have a size in the Y-axis direction which is larger than the size of the channel cavity 501 in the Y-axis direction; and / or, the separation cavity 502 is configured to have a size in the Z-axis direction which is larger than the size of the channel cavity 501 in the Z-axis direction. It can be understood that the cross-sectional area of the channel cavity 501 and the separation cavity 502, i.e. the cross-sectional area in the Y-Z plane, the size of the separation cavity 502 in the Y-axis and Z-axis directions are both larger than the channel cavity 501. In this way, the separation cavity 502 has a larger cross-sectional area size relative to the channel cavity 501, so as to obviously reduce the flow rate of the fluid flowing into the separation cavity 502, thereby improving the effect of gas-liquid separation.

[0079] Further, the volume of the separation cavity 502 can also be larger than the channel cavity 501, so that the gas-liquid mixture can stay in the separation cavity 502 for a longer time, so as to ensure the effect of gas-liquid separation. The gas-liquid mixture entering the separation cavity 502 will not flow into the vapor output 32 before the separation is completed, but will be fully separated in the separation cavity 502, thereby reducing the liquid content in the vapor. The cleaned working surface can be quickly dried, and water marks are not easy to be left.

[0080] In one embodiment of the present disclosure, referring to FIGS. 6, 8 and 10, the gas-liquid separation module 5 is provided with a gas outlet 52 for discharging steam on the wall of the separation cavity 502, the gas outlet 52 is used to communicate with the steam channel 321, so as to transport the steam obtained by gas-liquid separation to the air jet 322 through the steam channel 321. The position corresponding to the gas outlet 52 of the shell 51 can be provided with a pipe joint for connecting the steam channel 321, and the steam channel 321 can be sleeved on the pipe joint, so as to form a firm and secure gas connection.

[0081] As shown in FIG. 10, the gas outlet 52 is arranged offset from the channel cavity 501 in the extension direction (X-axis direction) of the channel cavity 501. In this embodiment, the center of the abutting portion 54 is located on the axis of the channel cavity 501, that is, the gas outlet 52 is arranged at a position offset from the abutting portion 54. The gas outlet 52 does not directly face the channel cavity 501, and the gas-liquid mixture from the channel cavity 501 does not directly flow to the gas outlet 52, but needs to stay in the separation cavity 502 for a period of time for sufficient separation before flowing to the gas outlet 52, thereby improving the gas-liquid separation effect.

[0082] In one embodiment of the present disclosure, as shown in FIG. 8, the side wall of the shell 51 provided with the gas outlet 52 is configured as an arc surface. The fluid in the separation cavity 502 can turn along the wall when reaching the arc surface, thereby realizing the effect of approximate cyclone separation in the separation cavity 502, and improving the gas-liquid separation effect. Specifically, the separation cavity 502 and the channel cavity 501 share the same side wall extending straight along the X-axis direction in the Y-axis direction, referring to FIG. 10, the arc surface side wall provided with the gas outlet 52 is connected with the straight extending side wall along the X-axis direction, and the gas outlet 52 is arranged away from the straight extending side wall in the Y-axis direction, thereby forming the above-mentioned effect of realizing cyclone separation in the separation cavity 502.

[0083] In one embodiment of the present disclosure, referring to FIGS. 2 and 7, the separation cavity 502 is provided with a blocking portion 57 adjacent to the channel cavity 501, the blocking portion 57 is located in the X-axis direction of the channel cavity 501; in the Z-axis direction and the Y-axis direction, the size of the blocking portion 57 is configured to be not less than the size of the channel cavity 501. At least part of the gas-liquid mixture flowing into the separation cavity 502 from the channel cavity 501 can pass through the blocking portion 57. Since the area of the blocking portion 57 is not less than the area of the opening of the channel cavity 501 towards the separation cavity 502, the blocking portion 57 can block the fluid flowing into the separation cavity 502. The blocking portion 57 can reduce the flow rate of the fluid, thereby blocking a part of the liquid mixed in the steam, and the liquid can condense into droplets on the blocking portion 57 and naturally drip along the blocking portion 57 into the separation cavity 502.

[0084] Preferably, the blocking part 57 can be arranged on the inner wall of the top of the shell 51, and can be a baffle extending downward, and the lower end of the baffle can extend to a position beyond the level of the bottom wall of the passage cavity 501. It can be understood that the gas-liquid mixture will basically float in the upper part of the cavity, and therefore arranging the blocking part 57 on the top wall can improve the blocking effect. As shown in FIG. 7, the bottom wall of the separation cavity 502 is lower than the bottom wall of the passage cavity 501, and after the gas-liquid mixture flowing along the passage cavity 501 enters the separation cavity 502, the part of the gas-liquid mixture concentrated in the upper part will be intercepted by the blocking part 57, thereby separating the liquid mixed in the steam, and the gas-liquid mixture diffused to the lower part will not be intercepted by the blocking part 57, but will lengthen the flow path by bypassing the blocking part 57, thereby increasing the residence time in the separation cavity 502, which helps to achieve sufficient separation.

[0085] In one embodiment of the present disclosure, referring to FIGS. 8 and 9, the bottom of the separation cavity 502 is provided with a liquid discharge port 53, and an automatic liquid discharge device is arranged in the separation cavity 502, which includes a sealing member for sealing the liquid discharge port 53. The automatic liquid discharge device can detect the liquid level in the separation cavity 502 by means of floating, liquid level sensor, etc. When the liquid level in the separation cavity 502 rises to a first liquid level threshold, the sealing member is configured to be separated from the liquid discharge port 53 to discharge liquid. Specifically, too much liquid should not be accumulated in the separation cavity 502, but should be discharged in time to prevent liquid from flowing into the steam output part 32. When the liquid level in the separation cavity 502 falls to a second liquid level threshold, the sealing member is configured to seal the liquid discharge port 53. Specifically, the liquid discharge port 53 needs to be sealed in time after discharging liquid, otherwise the separation cavity 502 will be depressurized, which is not conducive to continuing the gas-liquid separation.

[0086] In a specific embodiment of the present disclosure, referring to FIGS. 7 to 9, the sealing member is a floating member 55, which can be in various shapes such as a column or a sphere, and the present disclosure does not limit it. Preferably, as shown in FIG. 8, the floating member 55 is a sphere, which can be seated on the liquid discharge port 53 and only needs to be slightly floated to open the liquid discharge port 53. In addition, the spherical floating member 55 has a large mass and a spherical shape, so that the floating member 55 can be prevented from being blown up by the steam disturbance, and the liquid discharge port 53 can be prevented from being opened to cause depressurization when the liquid has not accumulated in the separation cavity 502, thereby improving the sealing effect.

[0087] The cleaning device can be selectively switched to a steam mode or a non-steam mode. In the non-steam mode or non-working condition, the separation chamber 502 is in a static state, and when the liquid level in the separation chamber 502 drops to a second liquid level threshold, the gravity of the spherical float 55 and the buoyancy provided by the residual water are balanced to seal the drainage port 53. However, at this time, there is still residual condensed water in the separation chamber 502, and the amount of residual condensed water matches the gravity of the float 55.

[0088] When the cleaning device is in the steam mode, the edge of the drainage port 53 and the spherical float 55 are in line contact to achieve sealing. Under the action of the steam pressure, the pressure area of the spherical float 55 is smaller than that of the liquid water, so that the pressure of the spherical float 55 is smaller than the water pressure under the same condition. The tension of the condensed water at the line contact position is destroyed by the steam pressure, so that the condensed water cannot be discharged due to the water surface tension even if there is a gap at the line contact position in other non-steam modes. However, in the steam mode, the condensed water can be discharged from the gap of the line contact under the action of the steam pressure. In addition, due to the influence of the buoyancy of the spherical float 55, when the condensed water drops to less than the second liquid level threshold of the separation chamber 502 in the non-steam mode or non-working condition, the float 55 has not sealed the drainage port 53, so that the condensed water can continue to be discharged from the drainage port 53, and the water level continues to drop. As the liquid level of the condensed water decreases, the buoyancy of the float 55 decreases. When the gravity of the float 55 and the buoyancy reach dynamic balance under the action of the steam, sealing is achieved, thereby ensuring that the amount of residual water in the separation chamber 502 is reduced when the drainage port 53 is sealed in the steam working mode.

[0089] The automatic drainage device further comprises a floating chamber 56, which is arranged on the floating path of the float 55, and at least part of the float 55 is configured to be limited in the floating chamber 56. The floating chamber 56 limits the float 55 to move up and down in the vertical direction only, and cannot drift to other positions in the separation chamber 502. In addition, in the inverted condition (such as the cleaning device during transportation, etc.), the float 55 is still limited in the floating chamber 56, thereby avoiding the pressure relief caused by the deviation of the float 55 from the drainage port 53.

[0090] In one embodiment of the present disclosure, referring to FIGS. 7 and 11, the top wall of the separation chamber 502 is provided with a limiting portion 58 extending downward, which is configured to be located above the float 55, that is, on the floating path of the float 55. The float 55 has a maximum floating height under the limiting action of the limiting portion 58. The limiting portion 58 can be a column arranged on the inner wall of the upper cover. When the float 55 floats to the top of the limiting portion 58, the float 55 cannot continue to float upward, thereby achieving limiting in the height direction. Specifically, the floating height of the float 55 is 2-4.5 mm, and the float 55 cannot float to a too high position under the action of the limiting portion 58.

[0091] The limiting portion 58 cooperates with the floating cavity 56 to limit the movement range of the floating member 55, so as to ensure that the floating member 55 can timely float up to drain liquid when the liquid level in the separation cavity 502 reaches the first liquid level threshold, and remain at the position of blocking the liquid drainage port 53 when the liquid level in the separation cavity 502 drops to the second liquid level threshold. During the cleaning process of the cleaning equipment, the floating member 55 can be shaken together, but the floating member 55 will not move to the position away from the liquid drainage port 53, thereby avoiding pressure relief.

[0092] The present disclosure does not limit the specific arrangement of the floating cavity 56. As described above, the shell 51 can be formed by buckling the upper cover and the lower cover. Referring to FIGS. 7-9, the floating cavity 56 can be arranged on the upper cover and extend downward from the inner wall of the upper cover. In this embodiment, the limiting portion 58 can be located in the floating cavity 56. As shown in FIG. 7, the diameter of the floating cavity 56 is slightly larger than the diameter of the floating member 55, so that the floating member 55 cannot be stuck in the floating cavity 56 and can move up and down in the floating cavity 56. The floating cavity 56 extends downward beyond the limiting portion 58, and the side wall of the floating cavity 56 covers at least part of the floating member 55, so that the floating member 55 is limited in the circumferential direction by the floating cavity 56 and in the vertical direction by the limiting portion 58 located in the floating cavity 56.

[0093] Referring to FIGS. 11-13, the floating cavity 56 can also be arranged on the lower cover and extend upward from the inner wall of the lower cover. In this embodiment, the liquid drainage port 53 can be located at the center position of the floating cavity 56. As shown in FIG. 11, the diameter of the floating cavity 56 is slightly larger than the diameter of the floating member 55, so that the floating member 55 cannot be stuck in the floating cavity 56 and can move up and down in the floating cavity 56. The limiting portion 58 can extend downward to extend into the floating cavity 56, or be flush with the upper opening of the floating cavity 56, or be slightly higher than the upper opening of the floating cavity 56, so as to prevent the floating member 55 from coming out of the floating cavity 56,

[0094] It can be understood that in the separation cavity 502, the separated steam will float in the upper position, and the liquid will drop to the lower position. Based on this, as shown in FIGS. 7-9, when the floating cavity 56 is arranged on the upper cover, the side wall of the floating cavity 56 is configured to have a gap with the inner wall of the separation cavity 502, so that the floating cavity 56 does not form a gas flow dead angle with the side wall of the separation cavity 502, and the steam can bypass the floating cavity 56 through the gap, thereby avoiding gas accumulation in the separation cavity 502 and hindering the realization of cyclone separation in the separation cavity 502.

[0095] As shown in FIGS. 11-13, in the case of arranging the floating cavity 56 on the lower cover, at least one side of the floating cavity 56 is provided with an opening 562, and the liquid dropped to the bottom wall of the separation cavity 502 can flow to the liquid discharge port 53 located in the floating cavity 56 through the opening 562. If the opening 562 is not provided, a large amount of liquid will not be able to enter the floating cavity 56, and thus cannot be discharged through the liquid discharge port 53, which will cause excessive liquid accumulation in the separation cavity 502.

[0096] In one specific embodiment of the present disclosure, referring to FIGS. 9 and 12, the inner wall of the floating cavity 56 is provided with a turbulence rib 561. The turbulence rib 561 can be provided with a plurality of turbulence ribs 561, which are distributed on the inner wall in the circumferential direction of the floating cavity 56. The turbulence rib 561 can extend in the vertical direction, or can be configured in other shapes such as a wave shape, a curve shape, etc. When the gas flow or gas-liquid mixed flow passes through the floating member 55, the floating member 55 can be blown up before the liquid level in the separation cavity 502 reaches the first liquid level threshold, causing pressure relief. The present embodiment reduces the influence of the fluid on the floating member 55 by arranging a plurality of turbulence ribs 561 on the inner wall of the floating cavity 56.

[0097] In one embodiment of the present disclosure, the ground brush housing 1 is also provided with a flow guide member, which is in interference fit with the roller brush 2. As shown in FIG. 2, the flow guide member can be a water spraying plate 6 arranged at the rear side of the roller brush 2 on the ground brush housing 1. The water spraying plate 6 can be connected to the clean water tank 7, thereby wetting the roller brush 2. The water spraying plate 6 is in interference fit with the roller brush 2, which not only facilitates the wetting effect, but also simultaneously functions as a scraper. With the rotation of the roller brush 2, the water spraying plate 6 can scrape the roller brush 2 and scrape off the dirt carried by the roller brush 2. As shown in FIG. 1, the dirt scraped off by the water spraying plate 6 can be directly sucked away by the dirt suction port 8 located below the water spraying plate 6, and thus will not fall to the ground. In other embodiments, the water spraying plate 6 does not directly contact the roller brush 2, but is in direct contact with the water scraping plate arranged below the water spraying plate 6. The liquid dropped above the water spraying plate 6 can be guided by the water spraying plate 6 to the water scraping plate in contact with the roller brush 2.

[0098] Continuing to refer to FIG. 2, the roll brush cover body 31 is provided with a liquid discharge channel 312, which is configured to communicate with the liquid discharge port 53 and the drainage member. It should be noted that the "communication" here does not only refer to structures that are directly connected to each other, but also refers to a liquid path between the liquid discharge port 53, the liquid discharge channel 312, and the drainage member. For example, there can be a gap between the liquid discharge channel 312 and the liquid discharge port 53, and the liquid discharge channel 312 is located below the liquid discharge port 53, and the drainage member is located below the liquid discharge channel 312. The liquid discharged from the liquid discharge port 53 can flow into the liquid discharge channel 312 under the action of gravity. Of course, the liquid discharge port 53, the liquid discharge channel 312, and the drainage member can also be connected in sequence by a pipeline. The liquid separated by the gas-liquid separation module 5 is configured to flow to the roll brush 2 in sequence through the liquid discharge port 53, the liquid discharge channel 312, and the drainage member. The liquid from the liquid discharge port 53 is the liquid separated by the gas-liquid separation module 5, which can be guided to the water spraying plate 6 and then to the roll brush 2 through the water spraying plate 6, thereby avoiding water stains on the ground. In other embodiments, the water spraying plate 6 does not directly contact the roll brush 2, but a water scraping plate is arranged below the water spraying plate 6 and directly contacts the roll brush 2. The liquid discharged from the separation chamber 502 flows to the water spraying plate 6 through the liquid discharge channel 312, is guided by the water spraying plate 6 to the water scraping plate that contacts the roll brush 2, and is then guided by the water scraping plate to the roll brush 2.

[0099] During the operation of the cleaning device, steam will be sprayed from the steam jet 322 located on the front side of the roll brush 2. Part of the steam will flow along the gap between the roll brush 2 and the roll brush cover body 31 (referring to the view direction of FIG. 1, the steam flows in a clockwise direction), and is sucked away by the suction port 8, which reduces the amount of steam sprayed onto the ground and causes waste. To solve the above problem, in one embodiment of the present disclosure, referring to FIGS. 2 and 5, a steam baffle 33 is arranged inside the roll brush cover body 31, which is configured to extend from the roll brush cover body 31 to an interference fit with the roll brush 2, and the outlet of the liquid discharge channel is arranged on the rear side of the steam baffle. The steam baffle 33 can be made of a flexible material such as silica gel or rubber, so that the steam baffle 33 closely contacts the roll brush 2 without causing hard resistance to the rotation of the roll brush 2. When the steam flows to the steam baffle 33, it will be blocked, so it will not continue to flow clockwise and will not be sucked away by the suction port 8, thereby increasing the amount of steam sprayed onto the ground and avoiding waste of steam.

[0100] Application scenarios

[0101] In a household cleaning scenario, the cleaning device is a steam floor cleaning machine. The steam floor cleaning machine comprises a floor brush assembly, the floor brush assembly comprising: a floor brush housing 1, a roller brush 2, a roller brush cover assembly 3, a steam generation module 4, a gas-liquid separation module 5. The gas-liquid separation module 5 is provided with a channel cavity 501 and a separation cavity 502 which are in communication with each other in the shell 51 of the gas-liquid separation module 5.

[0102] In the working process of the steam floor cleaning machine, the steam generated by the steam generation module 4 enters the gas-liquid separation module 5 through the exhaust valve 41 and the docking portion 54. The steam generation module 4 is connected to the channel cavity 501 through the docking portion 54. Since the steam generation module 4 has a relatively large gas pressure, the gas-liquid mixture can naturally flow towards the separation cavity 502 after entering the channel cavity 501. The cross-sectional area of the separation cavity 502 along the vertical direction of the steam flow is larger than that of the channel cavity 501 along the vertical direction of the steam flow. When the fluid flows from the channel cavity 501 with a smaller cross-sectional area to the separation cavity 502 with a larger cross-sectional area, the flow rate of the gas-liquid mixture will decrease, and the gas-liquid mixture will stay in the separation cavity 502 for a certain period of time, thereby improving the gas-liquid separation effect.

[0103] The gas-liquid separation module 5 is provided with a steam outlet 52 on the wall surface of the separation cavity 502 for discharging steam. The steam outlet 52 is used to communicate with the steam channel 321, so as to transport the steam obtained by gas-liquid separation to the air jet 322 through the steam channel 321. The air jet 322 is provided with a plurality of steam nozzles 3221, which are directed towards the working surface.

[0104] The present disclosure sets the gas-liquid separation module 5, and the steam generated by the steam generation module 4 is first subjected to gas-liquid separation by the gas-liquid separation module 5 before being transported to the steam output portion 32, so that the liquid content in the steam sprayed by the steam output portion 32 is greatly reduced. During the cleaning process, the steam output portion 32 can spray steam onto the working surface, thereby improving the cleaning and sterilization effect. Since the liquid content in the steam is low, the liquefied water droplets are effectively avoided, the working surface after cleaning can be quickly dried, and water marks are not easily left, thereby improving the user experience.

[0105] The bottom of the separation cavity 502 is provided with a liquid discharge port 53, the separation cavity 502 is provided with a spherical floating member 55 for sealing the liquid discharge port 53, and a floating cavity 56 is arranged on the floating path of the floating member 55. At least part of the floating member 55 is limited in the floating cavity 56, and the floating cavity 56 limits the floating member 55 to move up and down in the vertical direction only, and cannot be drifted to other positions in the separation cavity 502.

[0106] When the liquid level in the separation cavity 502 rises to the first liquid level threshold, the float 55 is separated from the liquid discharge port 53, so that the liquid is timely discharged, and accumulation of too much liquid in the separation cavity 502 is avoided. When the liquid level in the separation cavity 502 falls to the second liquid level threshold, the float 55 seals the liquid discharge port 53 to prevent the separation cavity 502 from being depressurized. The present disclosure achieves automatic water drainage and water sealing by providing the float 55.

[0107] Embodiments of the present disclosure have been described above, the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles, practical applications, or technical improvements in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A cleaning device comprising a floor brush assembly, the floor brush assembly comprising: a floor brush housing (1); a roller brush (2) rotatably connected to the floor brush housing (1) and configured to clean a working surface; a roller brush cover assembly (3) comprising a roller brush cover body (31) and a steam output (32), the steam output (32) being provided on the roller brush cover body (31) and configured to provide steam to the working surface; a steam unit comprising a steam generation module (4) provided in the floor brush housing (1) and configured to deliver steam to the steam output (32), characterized in that: the steam unit further comprises a gas-liquid separation module (5) configured to receive steam generated by the steam generation module (4) and deliver the steam to the steam output (32) after gas-liquid separation, the gas-liquid separation module (5) being provided with a liquid discharge opening (53) at a bottom thereof, the roller brush cover body (31) being provided with a liquid discharge channel (312), and the floor brush housing (1) being provided with a drainage member, liquid separated by the gas-liquid separation module (5) being configured to flow to the roller brush (2) in sequence through the liquid discharge opening (53), the liquid discharge channel (312) and the drainage member. The liquid discharge channel (312) is located below the liquid discharge opening (53), and the drainage member is located below the liquid discharge channel (312); liquid discharged from the liquid discharge opening (53) is configured to flow to the roller brush (2) in sequence through the liquid discharge channel (312) and the drainage member under the action of gravity. The drainage member comprises a wiper plate in contact with the roller brush (2). The floor brush assembly further comprises a clean water tank (7) configured to supply liquid to the steam generation module (4), the clean water tank (7) being located above the gas-liquid separation module (5), and the roller brush cover body (31) being located below the gas-liquid separation module (5); the gas-liquid separation module (5) is at least partially clamped between the clean water tank (7) and the roller brush cover body (31). The gas-liquid separation module (5) has a certain degree of freedom relative to the roller brush cover body (31). An inner side of the roller brush cover body (31) is provided with a steam baffle (33) configured to extend from the roller brush cover body (31) to interference fit with the roller brush (2), and an outlet of the liquid discharge channel (312) is provided at a rear side of the steam baffle.

2. The cleaning apparatus of claim 1, wherein, The gas-liquid separation module (5) is provided with a gas outlet (52) configured to discharge steam, the steam output (32) comprises a gas jet member (322) and a steam channel (321) located in the roller brush cover body (31), the steam channel (321) being configured to connect the gas outlet (52) to the gas jet member (322).

3. The cleaning apparatus of claim 1, wherein, The roller brush cover body (31) comprises a body portion configured to enclose a roller brush cavity (310), and a decorative cover plate exposed on an outer side, and the steam channel (321) is an arc-shaped pipeline provided between the body portion and the decorative cover plate.

4. The cleaning apparatus of claim 1, wherein, ​ 5. The cleaning apparatus of claim 1, wherein, ​ 6. The cleaning apparatus of claim 1, wherein, ​ 7. The cleaning apparatus of claim 1, wherein, ​ 8. The cleaning apparatus of claim 7, wherein, ​ 9. The cleaning apparatus of claim 1, wherein, The gas-liquid separation module (5) comprises a channel cavity (501) and a separation cavity (502) in communication with each other; the steam generated by the steam generation module (4) is configured to sequentially pass through the channel cavity (501) and the separation cavity (502) and enter the steam output portion (32); wherein the cross-sectional area of the separation cavity (502) along the direction perpendicular to the steam flow direction is configured to be greater than the cross-sectional area of the channel cavity (501) along the direction perpendicular to the steam flow direction.

10. The cleaning apparatus of claim 9, wherein, The axis direction of the channel cavity (501) is denoted as the X-axis direction, the direction perpendicular to the X-axis and in the same horizontal plane is denoted as the Y-axis direction, and the thickness direction of the gas-liquid separation module (5) is denoted as the Z-axis direction; the separation cavity (502) is configured to have a size in the Y-axis direction greater than the size of the channel cavity (501) in the Y-axis direction; And / or, the separation cavity (502) is configured to have a size in the Z-axis direction greater than the size of the channel cavity (501) in the Z-axis direction.

11. The cleaning apparatus of claim 10, wherein, The separation cavity (502) is provided with a blocking portion (57) adjacent to the channel cavity (501); in the Z-axis direction and the Y-axis direction, the size of the blocking portion (57) is configured to be not less than the size of the channel cavity (501).

12. The cleaning apparatus of claim 11, wherein, The gas-liquid separation module (5) is provided with a gas outlet (52) on the wall surface of the separation cavity (502) for discharging steam, and the gas outlet (52) is arranged offset from the channel cavity (502) in the extension direction of the channel cavity (501).

13. The cleaning apparatus of claim 12, wherein, The bottom of the separation cavity (502) is provided with the liquid discharge port (53), and the separation cavity (502) is provided with an automatic liquid discharge device; the automatic liquid discharge device comprises a sealing member for sealing the liquid discharge port (53).

14. The cleaning apparatus of claim 1, wherein, The floor brush assembly further comprises a clean water tank (7) arranged on the floor brush shell (1), and the gas-liquid separation module (5) and the roller brush cover assembly (3) are configured to be connected to the clean water tank (7); the gas-liquid separation module (5) is configured to be detachably connected to the clean water tank (7) and the roller brush cover assembly (3) on the floor brush shell (1).

15. The cleaning apparatus of claim 14, wherein, The gas-liquid separation module (5) is configured to be located between the clean water tank (7) and the roller brush cover body (31); the roller brush cover body (31) is provided with a first accommodating groove (311) at the top, and the bottom of the gas-liquid separation module (5) has a first matching portion (511) extending into the first accommodating groove (311).

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