Cleaning device

Abstract

Cleaning device comprising a floor brush component, wherein the floor brush component comprises the following: a floor brush housing (1); a roller brush (2) wherein the roller brush (2) is rotatably connected to the floor brush housing (1) and is configured to clean a work surface; a roller brush cover component (3) comprising a roller brush cover body (31) and a steam output section (32), wherein the steam output section (32) is arranged on the roller brush cover body (31) and is configured to supply steam to the working surface; and a steam unit comprising a steam generation module (4) arranged in the bottom brush housing (1) to transport steam to the steam output section (32), wherein The steam unit further comprises a gas-liquid separation module (5), the gas-liquid separation module (5) being configured to receive the steam generated by the steam generation module (4) and to transport the steam to the steam output section (32) after gas-liquid separation, wherein the gas-liquid separation module (5) is provided at its bottom with an outlet opening (53), the roller brush cover body (31) is provided with an outlet channel (312), and the bottom brush housing (1) is provided with a guide element; wherein a liquid separated by the gas-liquid separation module (5) is configured to flow successively through the outlet opening (53), the outlet channel (312), and the guide element to the roller brush (2).

Description

[0001] The present disclosure claims priority from Chinese patent application No. 202422169682.0 entitled “CLEANING DEVICE”, which was filed with the Chinese Intellectual Property Administration on September 4, 2024, and is incorporated herein in its entirety by reference. AREA

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

[0003] With the development of societal productivity, people's living standards have steadily increased. Securing their material foundations, people began using various tools to reduce their workload and improve the quality of their home lives, leading to the development of household cleaning appliances. Among the numerous household cleaning devices available, the steam floor cleaner, which combines vacuuming and steam cleaning capabilities, has gained significant consumer attention due to its powerful floor cleaning performance.

[0004] The steam floor cleaner is effective at removing oil stains and dirt from floors and can help users clean kitchen floors and disinfect them easily. However, a serious problem with steam floor cleaners currently on the market is steam condensation and dripping. The steam sprayed onto the roller brush or the floor contains a high amount of liquid, making the floor prone to water residue. The cleaned floor is too wet and difficult to dry, resulting in a poor user experience. Furthermore, the condensed water produced during steam transmission tends to collect at the steam nozzle. This condensation can then drip from the nozzle after the floor cleaner is closed, leaving water residue on the floor.On the other hand, when the steam nozzle is restarted and the steam function is used again by the user, it may initially spray the condensation remaining in the steam channel, making the floor damp. GENERAL DESCRIPTION OF THE INVENTION

[0005] According to the present disclosure, a cleaning device and a steam system are provided to solve the problems of the prior art.

[0006] According to a first aspect of the present disclosure, a cleaning device is provided which includes a floor brush component. The floor brush component includes: a floor brush housing, a roller brush, a roller brush cover component, and a steam unit. The roller brush is rotatably connected to the floor brush housing and is configured to clean a work surface. The roller brush cover component includes a roller brush cover body and a steam outlet section, wherein the roller brush cover body and the floor brush housing enclose a roller brush chamber for interacting with the roller brush. The steam outlet section is arranged on the roller brush cover body and is configured to supply steam to the work surface. The steam unit includes a steam generation module for transporting steam to the steam outlet section.The steam unit further includes a gas-liquid separation module, wherein the gas-liquid separation module is configured to receive the steam generated by the steam generation module and transport the steam to the steam output section after performing a gas-liquid separation, wherein the gas-liquid separation module has at least two areas with different cross-sectional areas arranged in a steam flow direction, and wherein the cross-sectional area of ​​an area arranged upstream of the steam flow path is smaller than that of an area arranged downstream of the steam flow path.

[0007] According to a second aspect of the present disclosure, a cleaning device is provided which includes a floor brush component. The floor brush component includes: a floor brush housing, a roller brush, a roller brush cover component, and a steam unit. The roller brush is rotatably connected to the floor brush housing and is configured to clean a work surface. The roller brush cover component includes a roller brush cover body and a steam output section. The steam output section is arranged on the roller brush cover body and is configured to supply steam to the work surface. The steam unit includes a steam generation module arranged on the floor brush housing to transport steam to the steam output section.The steam unit further includes a gas-liquid separation module, the gas-liquid separation module being configured to receive the steam generated by the steam generation module and, after gas-liquid separation, transport the steam to the steam output section. The gas-liquid separation module is provided with an outlet opening on its underside, the roller brush cover body is provided with an outlet channel, and the bottom brush housing is provided with a guide element. A liquid separated by the gas-liquid separation module is configured to flow sequentially through the outlet opening, the outlet channel, and the guide element to the roller brush.

[0008] In one embodiment, the outlet channel is arranged below the outlet opening, and the guide element is arranged below the outlet channel; a liquid exiting the outlet opening is configured so that, under the influence of gravity, it flows successively through the outlet channel and the guide element to the roller brush.

[0009] In one embodiment, the guide element includes a wiper plate that is in contact with the roller brush.

[0010] In one embodiment, the floor brush component further includes a fresh water tank for supplying liquid to the steam generation module, wherein the fresh water tank is arranged above the gas-liquid separation module and the roller brush cover body is arranged below the gas-liquid separation module; wherein the gas-liquid separation module is at least partially clamped between the fresh water tank and the roller brush cover body.

[0011] In one embodiment, the gas-liquid separation module has a certain freedom of movement relative to the roller brush cover body.

[0012] In one embodiment, a steam partition is provided on an inside of the roller brush cover body, and the steam partition is configured to extend from the roller brush cover body to form an interference fit with the roller brush, and an outlet of the outlet channel is arranged behind the steam partition.

[0013] In one embodiment, the gas-liquid separation module is provided with a steam outlet for releasing steam, wherein the steam output section includes a spray element and a steam channel arranged in the roller brush cover body, the steam channel being configured to connect the steam outlet to the spray element.

[0014] In one embodiment, the roller brush cover body includes a body configured to enclose in order to form a roller brush chamber and a decorative cover plate exposed on the outside, and the steam channel is an arc-shaped conduit arranged between the body and the decorative cover plate.

[0015] In one embodiment, the gas-liquid separation module includes a channel chamber and a separation chamber connected to each other; wherein the steam generated by the steam generation module is configured to enter the steam output section successively through the channel chamber and the separation chamber; wherein a cross-sectional area of ​​the separation chamber in a direction perpendicular to the steam flow direction is configured to be larger than a cross-sectional area of ​​the channel chamber in a direction perpendicular to the steam flow direction.

[0016] In one embodiment, an axial direction of the channel chamber is designated as the X-axis direction, a direction perpendicular to the X-axis and located in the same horizontal plane as the X-axis is designated as the Y-axis direction, and a thickness direction of the gas-liquid separation module is designated as the Z-axis direction. The separation chamber is configured such that its size in the Y-axis direction is larger than a size of the channel chamber in the Y-axis direction; and / or the separation chamber is configured such that its size in the Z-axis direction is larger than a size of the channel chamber in the Z-axis direction.

[0017] In one embodiment, a blocking section is provided at a position next to the channel chamber in the separation chamber, and the size of the blocking section is configured such that it is not smaller than the size of the channel chamber in either the Z-axis direction and the Y-axis direction.

[0018] In one embodiment, the gas-liquid separation module is provided with a steam outlet on a wall of the separation chamber for releasing steam, and the steam outlet is offset in an extension direction of the channel chamber relative to the channel chamber.

[0019] In one embodiment, an outlet opening is provided at the bottom of the separation chamber, and an automatic outlet device is arranged in the separation chamber; the automatic outlet device includes a blocking element for closing the outlet opening.

[0020] In one embodiment, the floor brush component further includes a fresh water tank arranged on the floor brush housing, and the gas-liquid separation module and the roller brush cover component are configured to be connected to the fresh water tank; the gas-liquid separation module is configured to be detachably connected to the floor brush housing together with the fresh water tank and the roller brush cover component.

[0021] In one embodiment, the gas-liquid separation module is configured to be arranged between the fresh water tank and the roller brush cover body; a first receiving groove is provided on the top of the roller brush cover body, and a first fitting section extending into the first receiving groove is provided on the underside of the gas-liquid separation module; an arrangement gap is formed between the first fitting section and the first receiving groove.

[0022] An advantageous effect of the present disclosure is that a gas-liquid separation module is provided, and the steam generated by the steam generation module undergoes gas-liquid separation by the gas-liquid separation module before being transported to the steam output section, thus significantly reducing the liquid content in the steam sprayed from the steam output section. During the cleaning process, the steam output section can spray steam onto the work surface, thereby improving the cleaning and disinfection effect. Due to the low liquid content in the steam, liquefaction and droplet formation can be effectively avoided, and the cleaned work surface can dry quickly without leaving watermarks, thus improving the user experience.

[0023] A further advantageous effect of the present disclosure is that the gas-liquid separation module is provided with an outlet opening on its underside, the roller brush cover body is provided with an outlet channel, and the floor brush housing is provided with a guide element, so that the liquid separated by the gas-liquid separation module flows successively through the outlet opening, the outlet channel, and the guide element to the roller brush. In this way, the liquid can be directed from the outlet opening to the guide element and flow through the guide element to the roller brush, thus preventing the liquid from dripping onto the floor and forming water stains.

[0024] Further features and advantages of the present disclosure will become clear from the detailed description of the exemplary embodiments of the present disclosure with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings, which are integrated into and form part of the description, illustrate embodiments of the present disclosure and are used together with the description to explain the principles of the present disclosure. Fig. Figure 1 is a sectional view of a floor brush component according to the present disclosure; Fig. 2 is an enlarged partial view of a part in Fig. 1; Fig. Figure 3 is an enlarged partial view of another part in Fig. 1; Fig. Figure 4 is an exploded view of a floor brush component according to the present disclosure; Fig. Figure 5 is a schematic structural diagram of a fresh water tank, a roller brush cover and a gas-liquid separation module according to the present disclosure; Fig. Figure 6 is an exploded view of a fresh water tank, a roller brush cover component and a gas-liquid separation module according to the present disclosure; Fig. Figure 7 is a cross-sectional view of a gas-liquid separation module according to the present disclosure; Fig. Figure 8 is an exploded view of a gas-liquid separation module according to the present disclosure; Fig. Figure 9 is an exploded view of a gas-liquid separation module from a different perspective according to the present disclosure; Fig. Figure 10 is a top view of a gas-liquid separation module according to the present disclosure; Fig. Figure 11 is a cross-sectional view of a gas-liquid separation module according to a further embodiment of the present disclosure; Fig. Figure 12 is an exploded view of a gas-liquid separation module according to a further embodiment of the present disclosure; Fig. Figure 13 is an exploded view of the gas-liquid separation module from a different perspective according to a further embodiment of the present disclosure.

[0026] The one-to-one correspondence between the component designations and the reference symbols in the Fig. Numbers 1 to 13 are as follows: 1. Bottom brush housing; 2. Roller brush; 3. Roller brush cover component; 31. Roller brush cover body; 310. Roller brush chamber; 311. First receiving groove; 312. Outlet channel; 32. Steam output section; 321. Steam channel; 322. Spray element; 321. Steam spray hole; 33. Steam partition; 4. Steam generating module; 40. Heating chamber; 41. Outlet valve; 411. Valve core; 412. Elastic element; 42. Sealing element; 43. Liquid inlet; 5. Gas-liquid separation module; 501. Channel cavity; 502. Separation chamber; 51. Housing; 511. First fitting section; 512. Second receiving groove; 52. Steam outlet; 53. Outlet opening; 54. Docking section; 541. Upper stop element; 55. Floating element; 56. Floating chamber; 561. Turbulence fin; 562. Opening; 57. Blocking section; 58. Limiting section; 6. Spray plate; 7. Fresh water tank; 71. Liquid filling section; 8. Suction opening. DETAILED DESCRIPTION OF THE INVENTION

[0027] Several exemplary embodiments of the present disclosure are now described in detail with reference to the drawings. It should be noted that the relative arrangement, numerical expressions, and values ​​of the components and steps described in the embodiments do not limit the scope of the present disclosure unless otherwise stated.

[0028] The following description of at least one exemplary embodiment serves only for illustration and is not to be understood as a limitation of the present disclosure or its application or use.

[0029] Techniques, methods and devices known to the person skilled in the art may not be described in detail, but under appropriate circumstances such techniques, methods and devices should be considered as part of the description.

[0030] It should be noted that similar reference numbers and letters denote similar elements in the drawings. Therefore, an element defined in one figure need not be further described in subsequent figures.

[0031] In the present description, the terms “top”, “bottom”, “front”, “back”, “left”, “right”, etc. are used only to represent the relative positional relationship between related parts, and not to restrict the absolute position of these related parts.

[0032] In the present description, the terms "first", "second", etc. are used only to distinguish between them and do not denote any meaning or order, nor the prerequisite for their mutual existence.

[0033] In this document, terms such as "equal" and "identical" are not strictly mathematical and / or geometric restrictions, but also include permissible errors that are understandable to experts and acceptable for manufacture or use.

[0034] With reference to Fig. 1. A cleaning device according to the present disclosure is provided, which can be various types of intelligent cleaning devices that require steam, such as a steam floor cleaner, a steam mop, or a textile cleaning machine. In one embodiment according to the present disclosure, the cleaning device is a handheld cleaning device, such as a handheld cleaning machine, a handheld vacuum cleaner, a handheld floor cleaner, and other handheld cleaning devices well known to those skilled in the art. Similarly, the cleaning device can also be a self-propelled cleaning device, such as a floor sweeper robot, a floor mop robot, or an integrated sweeping and mopping robot.

[0035] The cleaning device in this embodiment is a handheld steam floor cleaner. The cleaning device comprises a body, a handheld section, and a floor brush component connected to a lower part of the body. In particular, the handheld section is connected to the body, thus facilitating manual control of the cleaning device by the user. The floor brush component is rotatably connected to the body, allowing the floor brush component to maintain contact with the work surface during cleaning and thereby remove dirt from the work surface.

[0036] As in Fig. As shown in Figure 1, the floor brush component includes the following: a floor brush housing 1, a roller brush 2, a roller brush cover component 3, and a steam unit. The floor brush housing 1 is provided with a suction opening 8, which can be connected via a suction channel to a dirty water container on the body, allowing the cleaning device to draw dirt from the suction opening 8 into the dirty water container. The roller brush 2 is rotatably connected to the floor brush housing 1 and is configured to clean the work surface. During use, the roller brush 2 rotates relative to the work surface, thereby cleaning the surface.

[0037] With reference to the Fig. 1, Fig. 4 and Fig. 5 includes the roller brush cover component 3, a roller brush cover body 31, and a steam output section 32. As in Fig. As shown in Figure 5, the roller brush cover body 31 and the bottom brush housing 1 enclose each other to form a roller brush chamber 310, which interacts with the roller brush 2. The roller brush chamber 310 can have a shape corresponding to the roller brush 2, which extends from a lower end of the roller brush chamber 310 to come into contact with the work surface. The roller brush chamber 310 can protect the roller brush 2 and prevent dirt from being ejected when the roller brush 2 rotates.

[0038] The steam delivery unit 32 is arranged on the roller brush cover body 31 and configured to supply steam to the work surface. The high-temperature steam can soften stubborn stains and has a good disinfecting effect, thereby improving the cleaning effect of the roller brush 2 on the work surface. In one embodiment according to the present disclosure, the steam delivery section 32, with reference to the Fig. Figures 1, 4 to 6 include a steam channel 321 located within the roller brush cover body 31, and a spray element 322 provided with at least two steam spray holes 3221 configured to face the working surface. The roller brush cover body 31 can include an enclosing body to form the roller brush chamber 310 and a decorative cover plate exposed on the outside. The steam channel 321 can be an arc-shaped pipe arranged between the body and the decorative cover plate.

[0039] The steam channel 321 is used to transport steam to the spray element 322, as shown in Fig. Figure 5 shows that several steam spray holes 3221 on the spray element 322 can be arranged in the axial direction of the roller brush 2. The distance between adjacent steam spray holes 3221 should not be too large, and the distance between adjacent steam spray holes 3221 can be kept essentially constant so that the steam sprayed by the spray element 322 is continuous and the steam can cover the roller brush 2 and / or the working surface as evenly as possible. In addition, the steam sprayed from the two furthest steam spray holes 3221 can extend beyond the edges on both sides of the roller brush 2, thereby improving the steam coverage area. Furthermore, during edge cleaning of the cleaning device, areas that are difficult to clean, such as walls and housing edges, can also be covered with steam, thus improving the cleaning effect of the cleaning device.

[0040] With reference to the Fig. 1 and Fig. 4 The steam unit includes a steam generation module 4 and a gas-liquid separation module 5. The steam generation module 4 is configured to transport steam to the steam output section 32. Furthermore, the steam generation module 4 is configured to heat the liquid to form steam and / or hot water. In one embodiment of the present disclosure, the steam generation module 4 includes, with reference to Fig. 3. A heating chamber 40 is provided, which contains a certain quantity of liquid and heats the liquid to form steam and / or hot water. The steam exiting the steam generation module is typically mixed with a certain quantity of liquid water, and during the steam transport process, some of the steam condenses as the ambient temperature decreases, leading to an increase in the water content of the steam. To reduce the water content in the steam, the gas-liquid separation module 5 is provided in this disclosure.

[0041] The gas-liquid separation module 5 is configured to connect the steam generation module 4 to the steam output section 32. Specifically, the gas-liquid separation module 5 is configured to receive the steam generated by the steam generation module 4 and, after gas-liquid separation, transport the steam to the steam output section 32. It is understood that the water content in the steam obtained after gas-liquid separation is significantly reduced. The steam separated by the gas-liquid separation module 5 is configured to be transported through the steam channel 321 to the steam spray hole 3221, where it is sprayed onto the work surface, effectively reducing the amount of liquefied condensate in the steam.

[0042] Furthermore, the gas-liquid separation module 5 has at least two regions with different cross-sectional areas arranged in a steam flow direction, wherein the cross-sectional area of ​​a region located upstream of the steam flow path is smaller than that of a region located downstream of the steam flow path. Based on Bernoulli's principle, the flow velocity of the gas-liquid mixture decreases as a fluid flows from a region with a smaller cross-sectional area to a region with a larger cross-sectional area. The mixture can remain in the region with the larger cross-sectional area for a certain time and, under the influence of gravity, achieve gas-liquid separation, thereby further enhancing the gas-liquid separation effect.In the present disclosure, the cross-sectional area of ​​the inner chamber of the gas-liquid separation module 5 suddenly expands, thereby improving the effect of the gas-liquid separation.

[0043] In the present disclosure, the gas-liquid separation module 5 is provided, and the steam generated by the steam generation module 4 undergoes gas-liquid separation by the gas-liquid separation module 5 before being transported to the steam output section 32. This significantly reduces the liquid content in the steam sprayed from the steam output section 32. During the cleaning process, the steam output section 32 can spray the steam onto the work surface, thereby improving the cleaning and disinfection effect. Due to the low liquid content in the steam, liquefaction and droplet formation are effectively avoided, and the cleaned work surface can dry quickly without leaving water residue, thus improving usability.

[0044] In an embodiment according to the present disclosure, the floor brush component, with reference to the Fig. 1, Fig. 4 and Fig. 5 further includes a fresh water tank 7, which is arranged on the floor brush housing 1. The fresh water tank 7 can store fresh water or cleaning solution, which can supply liquid to at least the roller brush 2 and the steam generation module 4. As in Fig. As shown in Figure 5, the gas-liquid separation module 5 and the roller brush cover component 3 are configured to be permanently connected to the fresh water tank 7, and the gas-liquid separation module 5 is configured to be detachably connected to the floor brush housing 1 together with the fresh water tank 7 and the roller brush cover component 3. Specifically, the gas-liquid separation module 5 and the roller brush cover 3 can be attached to the clean water tank 7 by methods such as screws, ultrasonic welding, snap fasteners, or press fits, forming a single structure of the three parts. The entire assembly can be detachably connected to the floor brush housing 1, and a user can manually disassemble the three parts to manually refill the water tank 7 and to clean the roller brush cover component 3 and the gas-liquid separation module 5.

[0045] In a specific embodiment according to the present disclosure, the gas-liquid separation module 5 is configured to be located between the fresh water tank 7 and the roller brush cover body 31. The fresh water tank 7 is arranged above the gas-liquid separation module 5, and the roller brush cover body 31 is arranged below a portion of the gas-liquid separation module 5. The gas-liquid separation module 5 is at least partially clamped between the fresh water tank 7 and the roller brush cover body 31. As shown in Fig. As shown in Figure 4, a first receiving groove 311 is provided on the upper side of the roller brush cover body 31. As shown in Fig. As shown in Figure 7, a first fitting section 511 is provided on the underside of the gas-liquid separation module 5, extending into the first receiving groove 311. The first fitting section 511 can be a stepped structure formed by the base of a housing 51 of the gas-liquid separation module 5. When the gas-liquid separation module 5 and the roller brush cover component 3 are rigidly connected to the fresh water tank 7, the first fitting section 511 is received in the first receiving groove 311, thereby optimizing the design of the cleaning device components and improving the compactness of the components between the roller brush cover body 31 and the gas-liquid separation module 5.

[0046] A gap may be present between the first pass section 511 and the first receiving groove 311, allowing the gas-liquid separation module 5 some freedom of movement relative to the roller brush cover body 31. When installing the entire assembly, consisting of the fresh water tank 7, the roller brush cover component 3, and the gas-liquid separation module 5, on the bottom brush housing 1, the user must not only install the assembly in its designated position but also ensure that the gas-liquid separation module 5 can be precisely connected to the steam generation module 4. In this embodiment, the gas-liquid separation module 5 has some freedom of movement, which facilitates the installation of the interface between the gas-liquid separation module 5 and a corresponding steam interface, thereby reducing the requirements for installation accuracy.This allows a user to perform the docking and installation easily and quickly.

[0047] With reference to the Fig. 5 and Fig. 8 A second receiving groove 512 is provided on the upper side of the housing 51 of the gas-liquid separation module 5, and an arrangement groove adapted to an upper part of the outer housing 51 can be provided on the underside of the fresh water tank 7, and a second fitting section is located within the arrangement groove, which is adapted to the second receiving groove 512. In a case where the gas-liquid separation module 5 and the roller brush cover component 3 are rigidly connected to the fresh water tank 7, the upper part of the housing 51 is received in the arrangement groove, and the second fitting section is received in the second receiving groove 512, thereby optimizing the design of the cleaning device components and improving the compactness of the arrangement between the roller brush cover body 31 and the gas-liquid separation module 5.

[0048] In an embodiment according to the present disclosure, the steam generation module 4, with reference to the Fig. 3 and Fig. Figure 4 provides a liquid inlet 43 and an outlet valve 41, arranged side by side. The liquid inlet 43 is configured to connect to the fresh water tank 7, and the outlet valve 41 is configured to connect to the gas-liquid separation module 5. When the user installs the integrated component, consisting of the fresh water tank 7, the roller brush cover component 3, and the gas-liquid separation module 5, the fresh water tank 7 must be connected to the liquid inlet 43 and the gas-liquid separation module 5 to the outlet valve 41. In this disclosure, the liquid inlet 43 and the outlet valve 41 are arranged side by side, which increases compactness and facilitates the docking process for the user.

[0049] In particular, with reference to Fig. 5 A liquid filling section 71 is provided at the bottom of the fresh water tank 7. The liquid filling section 71 can project relative to the bottom surface of the fresh water tank 7 in order to be docked with the liquid inlet 43 for supplying liquid to the steam generating module 4.

[0050] As in the Fig. 3 and Fig. As shown in Figure 4, the gas-liquid separation module 5 is provided with a docking section 54, and an upper stop element 541 is provided within the docking section 54. During installation of the gas-liquid separation module 5, the outlet valve 41 is configured to extend into the docking section 54, so that the upper stop element 541 opens the outlet valve 41. The docking section 54 can be a funnel-shaped opening formed by the housing 51. During installation, the extended inclined surface of the docking section 54 can act as a guide to facilitate the upwardly projecting outlet valve 41 extending precisely into the docking section 54. A sealing element 42, which can be a silicone sealing ring placed on the outlet valve 41, is provided outside the outlet valve 41.In a case where the outlet valve 41 extends into the docking section 54, the sealing element 42 can cooperate with the expansion tendency of the docking section 54 to form an airtight structure, thereby preventing the escape of steam expelled from the outlet valve 41.

[0051] As in Fig. As shown in Figure 3, the outlet valve 41 includes a valve core 411 and an elastic element 412, which is pre-tensioned below the valve core 411. In its natural state, the valve core 411 tends to move upwards under the elastic force of the elastic element 412, thus sealing off the steam inside the heating chamber 40. When the outlet valve 41 extends into the docking section 54, the upper inner wall of the housing 51 and the downward-extending upper stop element 541 can push the valve core 411 downwards, thereby opening the outlet valve 41. During this process, the elastic element 412 undergoes compression deformation, and the steam can flow into the gas-liquid separation module 5 under the atmospheric pressure of the heating chamber 40.When the gas-liquid separation module 5, together with the fresh water tank 7 and the roller brush cover component 3, is removed from the bottom brush housing 1, the upper stop element 541 separates from the valve core 411. The valve core 411 is reset under the elastic force of the elastic element 412, thereby closing the outlet valve 41 and preventing steam from overflowing and scalding the user.

[0052] As in Fig. As shown in Figure 4, the steam generation module 4 is arranged inside the brush housing 1, and the liquid inlet 43 and the outlet valve 41 are exposed through the top of the brush housing 1. The liquid inlet 43 and the outlet valve 41 can be arranged in the axial direction of the roller brush 2. In contrast, as shown in Fig. Figure 5 shows the liquid filling section 71 and the docking section 54, which serve to dock to the liquid inlet 43 and the outlet valve 41 respectively, also arranged in the axial direction of the roller brush 2. When installing the entire assembly, consisting of the fresh water tank 7, the roller brush cover component 3, and the gas-liquid separation module 5, on the bottom brush housing 1, the liquid filling section 71 can dock simultaneously with the liquid inlet 43, and the docking section 54 can dock simultaneously with the outlet valve 41, thus simplifying the installation steps and improving ease of use.

[0053] In an embodiment according to the present disclosure, the gas-liquid separation module 5, with reference to Fig. 7 a housing 51, which can be formed by attaching an upper cover and a lower cover. A channel chamber 501 and a separation chamber 502, which are connected to each other, are arranged in the housing 51. The channel chamber 501 is connected to the steam generation module 4, and the separation chamber 502 is connected to the steam output section 32. The steam generated by the steam generation module 4 is configured to enter the steam output section 32 sequentially through the channel chamber 501 and the separation chamber 502. The steam generation module 4 is connected to the channel chamber 501 via the docking section 54. Due to the high atmospheric pressure inside the steam generation module 4, the gas-liquid mixture can, after entering the channel chamber 501 (relative to the viewing direction in Fig. 7, i.e. from right to left) naturally flow towards the separation chamber 502.

[0054] The cross-sectional area of ​​separation chamber 502 in the direction perpendicular to the steam flow direction is larger than the cross-sectional area of ​​channel chamber 501 in the same direction. Based on Bernoulli's principle, the flow velocity of the gas-liquid mixture decreases as fluid flows from channel chamber 501, with its smaller cross-sectional area, into separation chamber 502, which has a larger cross-sectional area. In separation chamber 502, the liquid phase, flowing slowly, sinks to the bottom of the chamber under the influence of gravity, while the steam continues to flow in the upper part of the chamber. The difference in flow velocity between the gas and liquid phases is significant, thus achieving gas-liquid separation.In the present disclosure, the cross-sectional area of ​​the inner chamber of the gas-liquid separation module 5 suddenly expands, thereby improving the effect of the gas-liquid separation.

[0055] In an embodiment according to the present disclosure, with reference to the Fig. 7 and Fig. In Section 10, an axial direction of the channel chamber 501 is referred to as the X-axis direction, a direction perpendicular to the X-axis and lying in the same horizontal plane as the X-axis is referred to as the Y-axis direction, and a thickness direction of the gas-liquid separation module 5 is referred to as the Z-axis direction. The separation chamber 502 is configured to be larger than the channel chamber 501 in the Y-axis direction; and / or the separation chamber 502 is configured to be larger than the channel chamber 501 in the Z-axis direction. It is understood that the cross-sectional areas of the channel chamber 501 and the separation chamber 502 are the cross-sectional areas on the YZ plane.The size of the separation chamber 502 in each of the Y-axis and Z-axis directions is larger than that of the channel chamber 501, giving the separation chamber 502 a larger cross-sectional area relative to the channel chamber 501, thereby significantly reducing the flow velocity of the fluid entering the separation chamber 502 and improving the effect of the gas-liquid separation.

[0056] Furthermore, the volume of separation chamber 502 can be larger than that of channel chamber 501, allowing the gas-liquid mixture to remain in separation chamber 502 for a longer period to ensure effective gas-liquid separation. The gas-liquid mixture entering separation chamber 502 does not flow into steam output section 32 before the separation process is complete, but achieves sufficient separation within separation chamber 502, thereby reducing the liquid content in the steam. This allows the cleaned work surface to dry quickly, leaving fewer traces of water.

[0057] In an embodiment according to the present disclosure, with reference to the Fig. 6, Fig. 8 and Fig. 10. The gas-liquid separation module 5 is provided with a steam outlet 52 on the wall of the separation chamber 502 for releasing steam. The steam outlet 52 is connected to the steam duct 321 to transport the steam obtained by gas-liquid separation through the steam duct 321 to the spray element 322. A pipe connection for connecting the steam duct 321 can be provided at the position corresponding to the steam outlet 52 of the housing 51. The steam duct 321 can be placed onto the pipe connection to form a stable and secure air path connection.

[0058] As in Fig. As shown in Figure 10, the steam outlet 52 is offset in an extension direction (the X-axis direction) relative to the channel chamber 501. In this embodiment, the center point of the docking section 54 is located on the axis of the channel chamber 501, i.e., the steam outlet 52 is arranged in a position offset from the docking section 54. The steam outlet 52 is not oriented directly towards the channel chamber 501, and the gas-liquid mixture from the channel chamber 501 does not flow directly to the steam outlet 52. Instead, the gas-liquid mixture must remain in the separation chamber 502 for a certain period of time to separate sufficiently before flowing to the steam outlet 52, thereby improving the gas-liquid separation effect.

[0059] In one embodiment according to the present disclosure, as in Fig. Figure 8 shows the side wall of the housing 51, which is provided with a vapor outlet 52, configured to have an arc-shaped surface. Upon reaching the arc-shaped surface, the fluid in the separation chamber 502 can rotate along the wall, thereby achieving an effect of near-cyclone separation in the separation chamber 502 and improving the gas-liquid separation. Specifically, the separation chamber 502 and the channel chamber 501 share the same side wall, which extends in the X-axis direction straight along the Y-axis. With reference to Fig. 10 is an arc-shaped side wall with a steam outlet 52 connected to the side wall extending straight in the X-axis direction, and the steam outlet 52 is arranged spaced apart from the side wall extending straight in the Y-axis direction, thereby achieving the cyclone separation effect described above in the separation chamber 502.

[0060] In one embodiment according to the present disclosure, with reference to the Fig. 2 and Fig. 7. A blocking section 57 is provided adjacent to the channel chamber 501 in the separation chamber 502, and the blocking section 57 is arranged in the X-axis direction of the channel chamber 501. The size of the blocking section 57 is configured such that it is not smaller than the size of the channel cavity 501 in the Z-axis and Y-axis directions. At least a portion of the gas-liquid mixture flowing from the channel chamber 501 into the separation chamber 502 can pass through the blocking section 57. Since the area of ​​the blocking section 57 is not smaller than the area of ​​the opening of the channel chamber 501 facing the separation chamber 502, the blocking section 57 can block the fluid flowing into the separation chamber 502. The blocking section 57 can reduce the flow velocity of the fluid and thereby block some of the liquid mixed into the steam.The liquid can condense into droplets at the blocking section 57 and drip naturally along the blocking section 57 into the separation chamber 502.

[0061] Preferably, the blocking section 57 can be arranged on the inner wall at the top of the housing 51. The blocking section 57 can be a downwardly extending deflecting plate, the lower end of which can project beyond the horizontal plane of the bottom wall of the channel chamber 501. It is understood that the gas-liquid mixture can essentially float in the upper part of the chamber, with the arrangement of the blocking section 57 on the upper wall being able to enhance the blocking effect. As in Fig. As shown in Figure 7, the bottom wall of separation chamber 502 is lower than the bottom wall of channel chamber 501. In a case where the gas-liquid mixture flowing along channel chamber 501 enters separation chamber 502, the portion of the gas-liquid mixture concentrated in the upper part can be trapped by the blocking section 57, thereby separating the liquid mixed with the vapor. Although the gas-liquid mixture that diffuses into the lower part may not be trapped by the blocking section 57, the flow path is lengthened by bypassing the blocking section 57, thus improving the residence time in separation chamber 502 and achieving sufficient separation.

[0062] In one embodiment according to the present disclosure, with reference to the Fig. 8 and Fig. 9. An outlet opening 53 is provided at the bottom of the separation chamber 502, and an automatic outlet device is arranged in the separation chamber 502. The automatic outlet device includes a sealing element for sealing the outlet opening 53. The automatic liquid outlet device can detect the liquid level in the separation chamber 502 by means of a float and a liquid level sensor. When the liquid level in the separation chamber 502 rises to the first liquid level threshold, the sealing element is configured to release from the outlet opening 53 for drainage. In particular, excess liquid should not accumulate in the separation chamber 502 but should be drained in a timely manner to prevent liquid from flowing into the steam output section 32.When the liquid level in the separation chamber 502 drops to the second liquid level threshold, the sealing element is configured to seal the outlet opening 53. It is particularly important to seal the outlet opening 53 promptly after the outlet, as otherwise a pressure drop may occur in the separation chamber 502, which would impair the continuation of the gas-liquid separation.

[0063] In a specific embodiment according to the present disclosure, with reference to the Fig. 7 to 9, the blocking element is a floating element 55, which can have various shapes such as a cylinder or a sphere and is not limited in the present disclosure. Preferably, the floating element 55 is, as in Fig. Figure 8 shows a sphere, and the spherical floating element 55 can be positioned at the outlet opening 53 and only needs to float slightly to open the outlet opening 53. Furthermore, due to its spherical shape, the floating element 55 has a relatively large mass, which prevents it from being inflated by steam turbulence before the liquid accumulates in the separation chamber 502. This inflation would cause the outlet opening 53 to open and the pressure to drop, thus improving the sealing effect.

[0064] The cleaning device can be selectively switched to either a steam mode or a non-steam mode. In non-steam mode, or the non-operating state, the separation chamber 502 is in a static state. When the liquid level in the separation chamber 502 drops to the second liquid level threshold, the gravity of the spherical floating element 55 and the buoyancy provided by the residual water reach equilibrium, thereby sealing the outlet opening 53. In this case, however, residual condensate remains in the separation chamber 502, and the remaining amount of condensate corresponds to the gravity of the floating element 55.

[0065] When the cleaning device is in steam mode, the edge of the outlet opening 53 is in line contact with the spherical floating element 55 to create a seal. Under the influence of the steam pressure, the contact area of ​​the spherical floating element 55 is smaller than that of the liquid water. Therefore, in this state, the pressure on the spherical floating element 55 is lower than the water pressure. The tension of the condensed water at the line contact point is relieved by the steam pressure, making it impossible to drain the condensed water due to the surface tension of the water, even if a gap exists at the line contact point in other, non-steam modes. However, in steam mode, the condensed water can flow out of the gap at the contact line under the steam pressure.Due to the buoyancy effect of the spherical floating element 55, when the condensed water falls below the second liquid level threshold of the separation chamber 502 in non-steam mode or in the non-operating state, the floating element 55 does not yet block the outlet opening 53. Therefore, the condensed water can continue to flow out of the outlet opening 53, and the water level can continue to fall. As the condensed water level decreases, the buoyancy acting on the floating element 55 also decreases. Under the influence of steam, a seal is achieved when gravity and the buoyancy of the floating element 55 reach a dynamic equilibrium. This ensures that the residual water in the separation chamber 502 is reduced by the steam pressure at the time the outlet opening 53 is sealed in steam operating mode.

[0066] The automatic discharge device further includes a floating chamber 56, which is arranged in the path of the floating element 55, and at least part of the floating element 55 is enclosed within the floating chamber 56. The floating chamber 56 prevents the floating element 55 from moving up and down vertically and from floating with the fluid to other positions within the separation chamber 502. Furthermore, in the event of a reversal (e.g., during transport of the cleaning device from the factory), the floating element 55 can remain enclosed within the floating chamber 56, thus preventing it from moving away from the discharge opening 53 and causing a pressure drop.

[0067] In one embodiment according to the present disclosure, with reference to the Fig. 7 and Fig. 11. A downwardly extending limiting section 58 is provided on the upper wall of the separation chamber 502, configured to be located above the floating element 55, i.e., on the floating element 55's path of movement. The floating element 55 has a maximum floating height under the limiting effect of the limiting section 58. The limiting section 58 can be a column arranged on the inner wall of the upper cover. When the floating element 55 floats against and collides with the limiting section 58, the floating element 55 cannot float any further, thus achieving a vertical limitation. Specifically, the floating height of the floating element 55 is 2 to 4.5 millimeters, and the floating element 55 does not float too high under the effect of the limiting section 58.

[0068] The limiting section 58 and the floating chamber 56 together limit the range of motion of the floating element 55 and ensure that the floating element 55 can float in time when the liquid level in the separation chamber 502 reaches the first liquid level threshold for draining the liquid, and remains in a position in which it blocks the outlet opening 53 when the liquid level in the separation chamber 502 falls to the second liquid level threshold. During the cleaning process of the cleaning device, the floating element 55 may rock along with the cleaning device, but the floating element 55 does not move away from the outlet opening 53 during this process, thus preventing a pressure drop.

[0069] The specific method for arranging the float chamber 56 is not limited in the present disclosure. As described above, the housing 51 can be formed by attaching the upper and lower covers. With reference to the Fig. 7 to 9, the float chamber 56 can be provided on the upper cover and extend downwards from the inner wall of the upper cover. In this embodiment, the limiting section 58 can be arranged inside the float chamber 56. As in Fig. As shown in Figure 7, the diameter of the float chamber 56 is slightly larger than that of the floating element 55, so that the floating element 55 does not become stuck in the float chamber 56 and can move up and down within the float chamber 56. The float chamber 56 extends downwards beyond the boundary section 58, and the side wall of the float chamber 56 covers at least part of the floating element 55, thus limiting the floating element 55 circumferentially by the float chamber 56 and vertically by the boundary section 58 within the float chamber 56.

[0070] With reference to the Fig. In the embodiment shown in Figures 11 to 13, the float chamber 56 can also be provided on the lower cover and extend upwards from the inner wall of the lower cover. In this embodiment, the outlet opening 53 can be located in the center of the float chamber 56. As shown in Fig. As shown in Figure 11, the diameter of the float chamber 56 is slightly larger than that of the floating element 55, so that the floating element 55 does not get stuck in the float chamber 56 and can move up and down within the float chamber 56. The limiting section 58 can extend downwards into the float chamber 56, be flush with the upper opening of the float chamber 56, or be slightly higher than the upper opening of the float chamber 56, thus preventing the floating element 55 from escaping the float chamber 56.

[0071] It is understood that in separation chamber 502 the separated vapor can float in the upper part, while the liquid drips downwards. Based on this, as in the Fig. Figures 7 to 9 show a case where the float chamber 56 is arranged on the upper cover, the side wall of the float chamber 56 is configured to have a gap to the inner wall of the separation chamber 502, so that the float chamber 56 does not form a dead angle with the side wall of the separation chamber 502. The steam can flow past the float chamber 56 through the gap, thus preventing steam from becoming trapped in the separation chamber 502 and clogging, and cyclone separation is achieved in the separation chamber 502.

[0072] As in the Fig. As shown in Figures 11 to 13, in a case where the float chamber 56 is arranged on the lower cover, at least one side of the float chamber 56 is provided with an opening 562, and the liquid dripping onto the bottom wall of the separation chamber 502 can flow through the opening 562 to the outlet opening 53 located in the float chamber 56. If the opening 562 is not provided, a large quantity of liquid cannot enter the float chamber 56 and therefore cannot flow out through the outlet opening 53, which would lead to an excessive accumulation of liquid in the separation chamber 502.

[0073] In a specific embodiment according to the present disclosure, with reference to the Fig. 9 and Fig. 12. A disturbance rib 561 is provided on the inner wall of the float chamber 56. Several disturbance ribs 561 can be arranged, distributed at intervals along the inner wall in the circumferential direction of the float chamber 56. The disturbance rib 561 can extend vertically or be formed in other shapes, such as corrugated or curved. When the airflow or gas-liquid mixture flows through the floating element 55, the floating element 55 can be inflated before the liquid level in the separation chamber 502 reaches the first liquid level threshold, resulting in pressure relief. In this embodiment, the influence of the fluid on the floating element 55 can be reduced by providing several disturbance ribs 561 on the inner wall of the float chamber 56.

[0074] In one embodiment according to the present disclosure, the floor brush housing 1 is further provided with a guide element which is in a press fit with the roller brush 2, as shown in Fig. Figure 2 shows that the guide element can be a water spray plate 6, which is positioned behind the roller brush 2 on the floor brush housing 1. The water spray plate 6 can be connected to the fresh water tank 7 to moisten the roller brush 2. The press fit between the water spray plate 6 and the roller brush 2 not only facilitates moistening but also acts as a scraper. As the roller brush 2 rotates, the water spray plate 6 can scrape the roller brush 2 and remove the dirt carried by the roller brush 2. As shown in Figure 2, the guide element can be a water spray plate 6, which is located behind the roller brush 2. Fig. As shown in Figure 1, the suction opening 8 is arranged below the water spray plate 6, so that the scraped-off dirt can be sucked up directly through the suction opening 8 without falling onto the floor. In other embodiments, the water spray plate 6 is not in direct contact with the roller brush 2, but rather in direct contact with it via a scraper plate arranged below the water spray plate 6. The liquid dripping over the water spray plate 6 can be directed through the water spray plate 6 to the scraper plate, which is in contact with the roller brush 2.

[0075] With further reference to Fig. 2 The roller brush cover body 31 is provided with an outlet channel 312 configured to connect the outlet opening 53 and the guide element. It should be noted that the term "connection" here is not limited to structures that are physically connected. As long as a fluid path exists between the outlet opening 53, the outlet channel 312, and the guide element, the outlet channel 312 can be considered to connect the outlet opening 53 and the guide element. For example, a gap may exist between the outlet channel 312 and the outlet opening 53, and the outlet channel 312 may be located below the outlet opening 53, with the guide element positioned below the outlet channel. The fluid exiting the outlet opening 53 can flow into the outlet channel 312 under the influence of gravity.The outlet opening 53, the outlet channel 312, and the guide element can also be connected sequentially by a pipe connection. The liquid separated by the gas-liquid separation module 5 is configured to flow sequentially through the outlet opening 53, the outlet channel 312, and the guide element to the roller brush 2. The liquid from the outlet opening 53 is the liquid separated by the gas-liquid separation module 5. The liquid can be directed to the water spray plate 6 and flow through the water spray plate 6 to the roller brush 2, thus preventing the liquid from dripping onto the floor and leaving water stains. In other embodiments, the water spray plate 6 is not in direct contact with the roller brush 2, but rather via a wiper plate arranged below the water spray plate 6.The liquid exiting the separation chamber 502 flows through the drain channel 312 to the water spray plate 6 and is directed from the water spray plate 6 to the scraper plate, which is in contact with the roller brush 2, in order to be directed from the scraper plate to the roller brush 2.

[0076] During operation of the cleaning device, steam can be sprayed from the spray element 322 located in front of the roller brush 2. Some of the steam can flow along the gap between the roller brush 2 and the roller brush cover body 31 (relative to the viewing direction in Fig. 1. The steam flows clockwise) and can be drawn off through the suction opening 8, which leads to a reduction in the amount of steam sprayed onto the floor and to steam waste. To solve the problems mentioned above, in an embodiment according to the present disclosure, with reference to the Fig. 2 and Fig.5. A steam partition 33 is provided on the inside of the roller brush cover body 31, the steam partition 33 being configured to extend from the roller brush cover body 31 to form an interference fit with the roller brush 2, and an outlet of the outlet channel 312 being located behind the steam partition. The steam partition 33 can be made of flexible materials such as silicone or rubber, so that the steam partition 33 fits snugly against the roller brush 2 without impeding its rotation. As the steam flows towards the steam partition 33, it can be blocked and prevented from continuing to flow clockwise, thus preventing it from being drawn out through the suction opening 8, thereby increasing the amount of steam sprayed onto the floor and preventing steam waste. Application scenario

[0077] In household cleaning scenarios, the cleaning device is a steam floor cleaner. The steam floor cleaner includes a floor brush component comprising a floor brush housing 1, a roller brush 2, a roller brush cover component 3, a steam generation module 4, and a gas-liquid separation module 5. The housing 51 of the gas-liquid separation module 5 is provided with a channel chamber 501 and a separation chamber 502, which are interconnected.

[0078] During operation of the steam floor cleaner, the steam generated by the steam generation module 4 passes through the outlet valve 41 and the docking area 54 into the gas-liquid separation module 5. The steam generation module 4 is connected to the channel chamber 501 via the docking area 54. Due to the high atmospheric pressure in the steam generation module 4, the gas-liquid mixture flows naturally towards the separation chamber 502 after entering the channel chamber 501. The cross-sectional area of ​​the separation chamber 502 in the direction perpendicular to the steam flow direction is larger than the cross-sectional area of ​​the channel chamber 501 in the same direction.When fluid flows from the channel chamber 501 with a smaller cross-sectional area into the separation chamber 502 with a larger cross-sectional area, the flow velocity of the gas-liquid mixture can decrease and the gas-liquid mixture can remain in the separation chamber 502 for a certain time, thereby improving the effect of the gas-liquid separation.

[0079] The gas-liquid separation module 5 is provided on the wall of the separation chamber 502 with a steam outlet 52 for releasing steam. The steam outlet 52 is used to connect to the steam channel 321 in order to transport the steam obtained from the gas-liquid separation through the steam channel 321 to the spray element 322. The spray element 322 has several steam spray holes 3221, which face the working surface.

[0080] In the present disclosure, a gas-liquid separation module 5 is provided, and the steam generated by the steam generation module 4 undergoes gas-liquid separation by the gas-liquid separation module 5 before being transported to the steam output section 32, thereby significantly reducing the liquid content in the steam sprayed from the steam output section 32. During the cleaning process, the steam output section 32 can spray steam onto the work surface, thus improving the cleaning and disinfection effect. Due to the low liquid content in the steam, dripping through liquefaction is effectively avoided, and the cleaned work surface can dry quickly without leaving watermarks, thus improving the user experience.

[0081] An outlet opening 53 is provided on the underside of the separation chamber 502, and a spherical floating element 55 is provided within the separation chamber 502 for closing the outlet opening 53, wherein a floating chamber 56 is arranged on a floating track of the floating element 55. At least a portion of the floating element 55 is confined within the floating chamber 56, and the floating chamber 56 prevents the floating element 55 from moving only up and down in a vertical direction and prevents it from floating with the fluid to other positions within the separation chamber 502.

[0082] When the liquid level in the separation chamber 502 rises to the first liquid level threshold, the floating element 55 separates from the outlet opening 53, thus enabling timely drainage and preventing excessive liquid accumulation in the separation chamber 502. When the liquid level in the separation chamber 502 falls to the second liquid level threshold, the floating element 55 seals the outlet opening 53 to prevent a pressure drop in the separation chamber 502. In the present disclosure, automatic drainage and watertight sealing can be achieved by providing the floating element 55.

[0083] Above, various embodiments of the present disclosure have been described, which are exemplary and not exhaustive, and the present disclosure is not limited to the embodiments mentioned above. Without departing from the scope and spirit of the various embodiments described, many modifications and changes are obvious to those skilled in the art. The choice of terms used herein is intended to explain, as best as possible, the principles, practical applications, or technological improvements of the embodiments, or to enable other skilled persons to understand the various embodiments disclosed herein. The scope of the present disclosure is limited by the claims. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] CH 202422169682.0

[0001]

Claims

[1] Cleaning device comprising a floor brush component, wherein the floor brush component comprises: a floor brush housing (1); a roller brush (2) wherein the roller brush (2) is rotatably connected to the floor brush housing (1) and is configured to clean a work surface; a roller brush cover component (3) comprising a roller brush cover body (31) and a steam output section (32), wherein the steam output section (32) is arranged on the roller brush cover body (31) and is configured to supply steam to the working surface; and a steam unit comprising a steam generation module (4) arranged in the bottom brush housing (1) to transport steam to the steam output section (32), wherein The steam unit further comprises a gas-liquid separation module (5), the gas-liquid separation module (5) being configured to receive the steam generated by the steam generation module (4) and to transport the steam to the steam output section (32) after gas-liquid separation, wherein the gas-liquid separation module (5) is provided at its bottom with an outlet opening (53), the roller brush cover body (31) is provided with an outlet channel (312), and the bottom brush housing (1) is provided with a guide element; wherein a liquid separated by the gas-liquid separation module (5) is configured to flow successively through the outlet opening (53), the outlet channel (312), and the guide element to the roller brush (2). [2] Cleaning device according to claim 1, wherein the outlet channel (312) is arranged below the outlet opening (53) and the guide element is arranged below the outlet channel (312); wherein a liquid exiting from the outlet opening (53) is configured such that it flows successively through the outlet channel (312) and the guide element to the roller brush (2) under the influence of gravity. [3] Cleaning device according to claim 1, wherein the guide element comprises a scraper plate which is in contact with the roller brush (2). [4] Cleaning device according to claim 1, wherein the floor brush component further comprises a fresh water tank (7) for supplying liquid to the steam generation module (4), wherein the fresh water tank (7) is arranged above the gas-liquid separation module (5) and the roller brush cover body (31) is arranged below the gas-liquid separation module (5); wherein the gas-liquid separation module (5) is at least partially clamped between the fresh water tank (7) and the roller brush cover body (31). [5] Cleaning device according to claim 1, wherein the gas-liquid separation module (5) has a certain freedom of movement relative to the roller brush cover body (31). [6] Cleaning device according to claim 1, wherein a steam partition (33) is provided on an inside of the roller brush cover body (31) and the steam partition (33) is configured to extend from the roller brush cover body (31) to form an interference fit with the roller brush (2) and an outlet of the drain channel (312) is arranged behind the steam partition (33). [7] Cleaning device according to claim 1, wherein the gas-liquid separation module (5) is provided with a steam outlet (52) for releasing steam, the steam output section (32) comprises a spray element (322) and a steam channel (321) arranged in the roller brush cover body (31), the steam channel (321) being configured to connect the steam outlet (52) to the spray element (322). [8] Cleaning device according to claim 7, wherein the roller brush cover body (31) comprises a body configured to enclose in order to form a roller brush chamber (310) and a decorative cover plate exposed on the outside, and the steam channel (321) is an arc-shaped conduit arranged between the body and the decorative cover plate. [9] Cleaning device according to claim 1, wherein the gas-liquid separation module (5) comprises a channel chamber (501) and a separation chamber (502) connected to each other; the steam generated by the steam generation module (4) is configured to enter the steam output section (32) successively through the channel chamber (501) and the separation chamber (502); wherein a cross-sectional area of ​​the separation chamber (502) in a direction perpendicular to the steam flow direction is larger than a cross-sectional area of ​​the channel chamber (501) in a direction perpendicular to the steam flow direction. [10] Cleaning device according to claim 9, wherein an axial direction of the channel chamber (501) is referred to as an X-axis direction, a direction perpendicular to the X-axis and located in the same horizontal plane as the X-axis is referred to as a Y-axis direction, and a thickness direction of the gas-liquid separation module (5) is referred to as a Z-axis direction; the separation chamber (502) is configured such that it has a size in the Y-axis direction that is larger than a size of the channel chamber (501) in the Y-axis direction; and / or the separation chamber (502) is configured such that it has a size in the Z-axis direction that is larger than a size of the channel chamber (501) in the Z-axis direction. [11] Cleaning device according to claim 10, wherein a blocking section (57) is provided at a position adjacent to the channel chamber (501) in the separation chamber (502) and the size of the blocking section (57) is configured such that it is not smaller than the size of the channel chamber (501) in either of the Z-axis direction and the Y-axis direction. [12] Cleaning device according to claim 9, wherein the gas-liquid separation module (5) is provided with a steam outlet (52) on a wall of the separation chamber (502) for releasing steam and the steam outlet (52) is offset in an extension direction of the channel chamber (501) relative to the channel chamber (501). [13] Cleaning device according to claim 9, wherein an outlet opening (53) is provided on a bottom of the separation chamber (502) and an automatic outlet device is arranged in the separation chamber (502); wherein the automatic outlet device comprises a blocking element for closing the outlet opening (53). [14] Cleaning device according to claim 1, wherein the floor brush component further comprises a fresh water tank (7) arranged on the floor brush housing (1) and the gas-liquid separation module (5) and the roller brush cover component (3) are configured to be connected to the fresh water tank (7); wherein the gas-liquid separation module (5) is configured to be detachably connected to the floor brush housing (1) together with the fresh water tank (7) and the roller brush cover component (3). [15] Cleaning device according to claim 14, wherein the gas-liquid separation module (5) is configured to be arranged between the fresh water tank (7) and the roller brush cover body (31); a first receiving groove (311) is provided on the top of the roller brush cover body (31) and a first fitting section (511) extending into the first receiving groove (311) is provided on the underside of the gas-liquid separation module (5); an arrangement gap is formed between the first fitting section (511) and the first receiving groove (311).

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