Impeller assembly for surface cleaning device and surface cleaning device

Abstract

The present disclosure provides an impeller assembly comprising: a first frame; the first open cavity is arranged on the first frame and is configured to be matched with a second frame of the impeller assembly to form a sealed cavity; an impeller; an impeller motor connected to the second frame and driving rotation of the impeller; the one or more openings are formed in the second frame and are configured to be communicated with the one or more impellers; the second open cavity is arranged on the second frame and is configured to be capable of being matched with the first frame of the impeller assembly to form a second sealed cavity; when the surface cleaning device works, a fluid channel from the opening to the second sealing cavity through the sealing cavity is formed. The filtering assembly is arranged in the second open cavity in a removable mode and is configured to prevent liquid in the fluid channel from flowing through the second sealed cavity. The utility model further provides a surface cleaning device.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an impeller assembly for a surface cleaning apparatus and a surface cleaning apparatus. BACKGROUND

[0002] The background section provided herein is merely for information and is not necessarily prior art.

[0003] A domestic scrubber is capable of using cleaning liquid to clean a ground or other surface to be cleaned, thereby improving the cleaning effect of the ground or other surface to be cleaned. Therefore, in recent years, the domestic scrubber has been widely popularized.

[0004] A layable scrubber is a surface cleaning apparatus capable of maintaining normal operation when the main machine body is parallel to the ground. During operation, the main machine and the cleaning head can be deeply cleaned in low space, thereby making the wet surface cleaning apparatus have good cleaning effect and greatly improving the cleaning efficiency compared with the traditional scrubber.

[0005] During the operation of the layable scrubber in the laid-down state, the accumulated sewage in the dirty water recovery tank is prone to form a surge due to the reciprocating movement of the layable scrubber on the surface to be cleaned by the force of the user's arm. If the surge is too large, part of the liquid will enter the suction device, thereby reducing the service life of the motor or causing the motor to fail. CONTENT OF THE INVENTION

[0006] In order to solve one of the above technical problems, the present disclosure provides an impeller assembly for a surface cleaning apparatus and a surface cleaning apparatus.

[0007] According to one aspect of the present disclosure, an impeller assembly for a surface cleaning apparatus is provided, the impeller assembly comprising:

[0008] a first frame;

[0009] a first open cavity disposed on the first frame and configured to cooperate with a second frame of the impeller assembly to form a sealed cavity;

[0010] an impeller rotatably connected to the second frame;

[0011] an impeller motor connected to the second frame and configured to drive rotation of the impeller;

[0012] one or more openings disposed on the second frame and configured to communicate with the one or more impellers;

[0013] a second open cavity disposed on the second frame and configured to cooperate with the first frame of the impeller assembly to form a second sealed cavity; a waterproof filter assembly is disposed in the second sealed cavity.

[0014] the surface cleaning device is in operation, a fluid path is formed from the opening, through the sealed cavity to the second sealed cavity;

[0015] a filter assembly removably disposed in the second open cavity configured to impede liquid flow in the fluid path through the second sealed cavity; wherein the waterproof filter assembly is positioned downstream of the impeller and upstream of the filter assembly.

[0016] According to one example of the disclosure, the filter assembly is disposed as one of a check valve, a solenoid valve, and a waterproof air-permeable membrane.

[0017] According to one example of the disclosure, further comprising a filter cavity disposed on the second frame and positioned downstream of the airflow of the second open cavity, the filter cavity having a second filter member removably disposed therein.

[0018] According to one example of the disclosure, the second filter member comprises a filter cotton or a HEPA filter.

[0019] According to one example of the disclosure, comprising a second opening disposed on the second frame and in fluid communication with the filter cavity, the second opening configured to provide a vacuum suction to the impeller assembly by a vacuum motor of the surface cleaning device.

[0020] According to another aspect of the disclosure, there is provided a surface cleaning device, comprising:

[0021] a body;

[0022] a vacuum motor disposed within the body configured to provide a vacuum suction to the surface cleaning device;

[0023] an impeller assembly disposed upstream of the vacuum motor configured to prevent liquid from entering the vacuum motor;

[0024] the impeller assembly comprises:

[0025] a first frame;

[0026] a first open cavity disposed on the first frame and configured to cooperate with a second frame of the impeller assembly to form a sealed cavity;

[0027] an impeller rotatably connected to the second frame;

[0028] an impeller motor connected to the second frame and configured to drive rotation of the impeller;

[0029] one or more openings disposed on the second frame configured to communicate with the one or more impellers;

[0030] a second open cavity disposed on the second frame and configured to mate with the first frame of the impeller assembly to form a second sealed cavity; a waterproof filter assembly disposed within the second sealed cavity;

[0031] when the surface cleaning device is in operation, a fluid path is formed from the opening, through the sealed cavity, to the second sealed cavity;

[0032] a filter assembly removably disposed in the second open cavity and configured to impede the flow of liquid in the fluid path through the second sealed cavity; wherein the waterproof filter assembly is downstream of the impeller and upstream of the filter assembly.

[0033] According to one example of the present disclosure, the filter assembly is configured as one of a check valve, a solenoid valve, and a waterproof air-permeable membrane.

[0034] According to one example of the present disclosure, a filter cavity is disposed on the second frame and downstream of the airflow of the second open cavity, and a second removable filter is disposed within the filter cavity.

[0035] According to one example of the present disclosure, the first frame and the second frame are detachably connected, and the first frame is fixedly disposed on the main body.

[0036] According to one example of the present disclosure, a second opening is disposed on the second frame and in fluid communication with the filter cavity, and the vacuum motor is configured to provide a vacuum suction force to the impeller assembly through the second opening.

[0037] Beneficial effects: the surface cleaning device of the utility model can be in a lying state during use, and in this lying state, operation is more labor-saving. The impeller assembly for the surface cleaning device includes a waterproof filter assembly, and unless the assembly is damaged, broken, or otherwise fails, liquid will not pass through the second sealed cavity due to negligence during normal use. BRIEF DESCRIPTION OF DRAWINGS

[0038] The accompanying drawings illustrate exemplary examples of the present disclosure and together with the description, explain the principles of the present disclosure, in which:

[0039] Figure 1 is a perspective view of a surface cleaning device according to one example of the present disclosure.

[0040] Figure 2 is a front view of an impeller assembly according to one example of the present disclosure.

[0041] Figure 3 is an exploded view schematic of an impeller assembly according to one example of the present disclosure.

[0042] Figure 4 is an exploded view schematic of an impeller assembly according to one example of the present disclosure.

[0043] Figure 5 is a side cross-sectional view schematic of an impeller assembly according to one example of the present disclosure. DETAILED DESCRIPTION

[0044] The present disclosure is further described below with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are meant to be illustrative only and not limiting as to the scope of the disclosure. Additionally, it is to be appreciated that the figures can not be drawn to scale and that relative dimensions of portions of the figures can be exaggerated for purposes of clarity.

[0045] It should be noted that the examples and features of the examples in the present disclosure can be combined with each other, as long as there is no conflict. The technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with examples.

[0046] Unless otherwise stated, the example examples shown are to be understood as providing exemplary features of various details that can be implemented in practice to embody the technical ideas of the present disclosure. Thus, unless otherwise stated, the features of the various examples can be additionally combined, separated, interchanged, and / or rearranged without departing from the technical ideas of the present disclosure.

[0047] Cross-hatching and / or shading in the drawings is generally used for making boundaries between adjacent parts clear. Thus, the presence or absence of cross-hatching and / or shading does not convey or imply any preference or requirement for a particular material, material property, dimension, scale, commonality of the illustrated parts, and / or any other characteristic, attribute, property, etc. of the parts. Moreover, in the drawings, the size and relative sizes of parts can be exaggerated for clarity and / or descriptive purposes. When the example examples can be implemented differently, a specific process sequence can be performed in a different order than described. For example, two consecutively described processes can be performed at substantially the same time or in an order opposite to that described. Furthermore, like reference numerals denote like parts throughout the figures.

[0048] When a component is referred to as being "on", "connected to", or "coupled to" another component, it can be directly on, connected, or coupled to the other component, or intervening components can be present. When a component is referred to as being "directly on", "directly connected to", or "directly coupled to" another component, there are no intervening components present. To this end, the term "connected" can refer to physical or electrical connection, with or without intervening components.

[0049] For descriptive purposes, the disclosure can use spatially relative terms, such as "beneath", "below", "lower", "under", "above", "upper" and "on" and the like, to describe the relative relationship between one component and another component as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0050] The terminology used herein is for the purpose of describing specific examples only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Further, to the extent that the terms "including", "includes", "having", "has", "united", "unites", "containing", "contains" or variants thereof are used in either the detailed description and / or the claims, such terms are intended to be inclusive in a manner similar to the term "comprising". It is also noted that the terms "substantial", "approximately", and other similar terms, as used herein, are used in their normal, ordinary sense and are not used in an absolute sense. Thus, they are used to explain approximations and / or tolerances for measurements, calculations, and / or other physical phenomena that are expected to vary slightly from the ideal.

[0051] The sewage surge in the working process of the lie-down type scrubber is the main reason for the failure of the current lie-down type scrubber vacuum pump. Although the existing technology uses anti-surge devices and / or gas-liquid separation impeller devices to keep the sewage droplets in the dirty water recovery tank as much as possible, but it is still impossible to avoid the escape of part of the liquid into the vacuum pump, resulting in the failure of the vacuum pump.

[0052] The technical solution of the present disclosure further sets a waterproof filter assembly in the air flow channel between the dirty storage tank and the outlet of the vacuum motor, so that the liquid that escapes after being filtered by the impeller assembly is intercepted under the action of the waterproof filter assembly during the operation of the scrubber, especially during the lying operation, to further reduce the possibility of liquid entering the vacuum motor, thereby ensuring the service life of the scrubber.

[0053] Figure 1 In one example shown, a surface cleaning device 200 with an impeller assembly 100 is depicted, including:

[0054] A cleaning liquid storage 202 for storing cleaning liquid (clean water or a mixture of cleaning agent and clean water, etc.); a cleaning base 204 capable of receiving the cleaning liquid provided by the cleaning liquid storage 202 to perform wet cleaning on the surface to be cleaned; in one example, the cleaning liquid storage 202 is located on the cleaning base 204 to reduce the overall center of gravity of the surface cleaning device 200; a recovery storage 206 capable of collecting solid / liquid / solid-liquid mixture generated by the cleaning base 204 performing wet cleaning on the surface to be cleaned.

[0055] In one example of the present disclosure, the surface cleaning device 200 further includes an impeller assembly 100; the impeller assembly 100 is arranged on the main frame of the surface cleaning device 200, and at least a part of the impeller assembly 100 is located in the recovery storage 206 when the recovery storage 206 is installed on the main body of the surface cleaning device 200, so as to separate the solid / liquid / solid-liquid mixture in the fluid in the recovery storage 206 from the gas in the fluid;

[0056] The surface cleaning device 200 further includes a vacuum assembly 208 for sucking the gas separated by the impeller assembly 100 and discharging the gas to the outside of the surface cleaning device 200; wherein the impeller assembly 100 forms a gas flow path, and the gas separated by the impeller assembly 100 enters the vacuum assembly 208 through the gas flow path;

[0057] As Figures 2-5 According to one example of the present disclosure, the impeller assembly 100 of the present disclosure includes: a frame portion 102 arranged on the frame of the surface cleaning device 200; an impeller 104 rotatably arranged on the frame portion 102; an impeller motor 106 arranged on the frame portion 102 and capable of driving the impeller 104 to rotate;

[0058] The impeller 104 has a fluid upstream side and a fluid downstream side, and the impeller 104 includes a rotating edge portion between the fluid upstream side and the fluid downstream side. The impeller motor 106 is coaxially arranged along the same axis as the impeller 104, and at least a portion of the impeller motor 106 is located in a space formed by the rotating edge portion and the fluid downstream side. The surface cleaning device 200 of the present disclosure, by providing the impeller assembly 100, can separate liquid and gas in the fluid in the recovery storage portion 206, and reduce residual liquid droplets in the air flow entering the vacuum assembly.

[0059] In some examples of the present disclosure, the impeller 104 of the impeller assembly 100 of the present disclosure rotates to form fluid filtration from the fluid upstream side to the fluid downstream side to perform separation of solid / liquid / solid-liquid mixture in the fluid in the recovery storage portion 206 from gas in the fluid.

[0060] In some examples of the present disclosure, the frame portion 102 of the impeller assembly 100 is combined by a first frame 1021 and a second frame 1022. The impeller motor 106 and the impeller 104 are supported on the frame portion 102, and the structure of the frame portion 102 is designed such that a containing space is formed between the first frame 1021 and the second frame 1022, and the containing space is used at least to contain the impeller motor 106. In one example, the first frame 1021 is fixed on or formed as part of the main body portion of the surface cleaning device 200, and the second frame 1022 is removably fixed on the first frame 1021.

[0061] In some examples of the present disclosure, preferably, the containing space formed by the first frame 1021 and the second frame 1022 includes an impeller motor accommodating cavity 1061 formed in the second frame 1022 to accommodate the impeller motor 106, and an open cavity formed outside the impeller motor accommodating cavity 1061. In some examples of the present disclosure, the impeller motor accommodating cavity 1061 is formed by a wall 10221 extending from the second frame 1022 along the longitudinal axis direction of the impeller motor 106. When the second frame 1022 is mounted on the first frame 1021, the free edge 10222 of the wall 10221 is combined with the receiving portion 10211 of the first frame 1021, and the wall 10221 forms a partition within the first frame 1021 and the second frame 1022 to isolate the impeller motor 106 from the air flow passage formed by the open cavity, so as to avoid water vapor from eroding the impeller motor 106. The impeller motor accommodating cavity 1061 is preferably matched in shape with the impeller motor 106 to stably accommodate the impeller motor 106. In one example, the wall 10221 forming the impeller motor accommodating cavity 1061 is cylindrical to match the outer contour of the impeller motor.

[0062] AsFigure 3 and 4 and in combination Figure 5 In one or more examples of the present disclosure, the open cavity described above comprises a first open cavity A, which is provided on the first frame 1021 and is configured to cooperate with the second frame 1022 of the impeller assembly to form a sealed cavity C; in one example of the present disclosure, the first open cavity A is formed by a wall 10212 extending outwardly from the inner wall of the first frame 1021; in some examples of the present disclosure, a receiving fitting 10223 is formed on the inner wall of the second frame 1022, which can be in the form of a sealing groove, so that the free edge 10222 of the formed wall 10212 of the first frame 1021 can be embedded into the receiving fitting 10223, thereby fluidically isolating the impeller motor receiving cavity 1061 of the receiving space from the sealed cavity C, and forming a fluidically sealed airflow passage for the sealed cavity C compared to the outside of the impeller assembly frame portion.

[0063] In one or more examples of the present disclosure, the open cavity described above further comprises a second open cavity B. The second open cavity B is provided on the second frame 1022 and is configured to cooperate with the first frame 1021 of the impeller assembly to form a second sealed cavity D. In one example of the present disclosure, the second open cavity B is formed by a recess 10224 recessed inwardly from the inner wall of the second frame 1022; in some examples of the present disclosure, the receiving fitting 10223 formed on the inner wall of the second frame 1022 extends around the recess 10224, so that the free edge 10222 of the formed wall 10212 of the first frame 1021 can be embedded into the receiving fitting 10223, thereby forming a fluidically sealed second sealed cavity D for the second open cavity B compared to the outside, and maintaining fluid communication with the sealed cavity C, thus forming a sealed airflow passage composed of the sealed cavity C and the second sealed cavity D.

[0064] The impeller 104 is preferably provided with a plurality of separation blades uniformly distributed along the circumference of the impeller 104, which constitute the rotating edge portion of the impeller 104, and each separation blade has a blade gap therebetween.

[0065] In some examples of the surface cleaning device 200 with the impeller assembly 100 of the present disclosure, a filter assembly 108 is provided on the fluid passage between the vacuum assembly 208 and the impeller assembly 100 to filter the fluid flowing therethrough (to filter out solids / liquids / solid-liquid mixtures in the fluid). The filter assembly 108 can be a HEPA assembly or a filter cotton to perform the filtering of the fluid flowing therethrough.

[0066] In some examples of the present disclosure, the impeller assembly 100 further comprises a filter cavity formed on the second frame 1022 for replacing the filter assembly 108 through the filter cavity. In one example, the filter assembly 108 comprises an operable portion, and the filter assembly 108 is detachably installed in the filter cavity through the operable portion.

[0067] Based on the above configuration of the accommodation space, the sealed cavity C between the first frame 1021 and the second frame 1022 and the second sealed cavity D form a fluid passage on the fluid downstream side, so that the fluid (gas) after being separated by the impeller 104 can be sequentially discharged to the outside of the surface cleaning device 200 through the blade gap, the opening O formed on the second frame 1022, the sealed cavity C, the second sealed cavity D and the filter cavity.

[0068] The surface cleaning device of the present disclosure can be in a lying state when in use, and in the lying state, the operation is more labor-saving. In a preferred embodiment, the recovery storage portion 206 is arranged at the rear of the main body portion; relatively speaking, the recovery storage portion 206 is located at the rear side of the main body portion, and the surface cleaning device of the present disclosure minimizes the disturbance of the liquid in the recovery storage portion 206 when lying down; at this time, when the main body portion is supported on the surface to be cleaned in a flat state, one surface (rear surface) of the recovery storage portion 206 is arranged close to the surface to be cleaned, and the impeller assembly is away from the surface to be cleaned relative to the recovery storage portion 206. The surface cleaning device of the present disclosure is more convenient to operate, especially when performing cleaning work, the center of gravity of the surface cleaning device is lower, and the user's use experience is improved.

[0069] When the surface cleaning device of the present disclosure is in a lying state for work, the gas and liquid mixture mixed with dirt particles is sucked into the recovery storage portion 206. In one example, a solid-liquid separator (not shown) is arranged in the recovery storage portion 206 to intercept solids in the recovery storage portion 206. Next, the impeller 104 is driven to spin by the rotation of the impeller motor 106, so as to separate the recovered gas and liquid from each other, so that the liquid remains in the recovery storage portion 206, and the gas is filtered by the filter assembly 108 and then discharged from the surface cleaning device.

[0070] It is found during actual testing that although the gas-liquid separation device including the impeller 104 and the impeller motor 106 in the airflow passage is able to trap most of the liquid in the recovery storage portion 206 of the surface cleaning device before entering the vacuum assembly 208, during the operation of the surface cleaning device, especially during the above-mentioned lying down operation, due to the back-and-forth operation of the surface cleaning device by the user, liquid surges are formed in the recovery storage portion 206 of the surface cleaning device. It is inevitable that part of the liquid will escape downstream of the impeller 104 and enter the filter assembly 108. When the liquid in the filter assembly 108 reaches saturation, part of the liquid will enter the vacuum assembly 208 under the action of the vacuum force. The vacuum assembly 208 usually includes a suction motor, and when the liquid enters the suction motor, it will affect the service life of the suction motor, and the service life of the suction motor directly determines the service life of the surface cleaning device.

[0071] In order to further prevent the escape of liquid, a waterproof filter assembly 300 is arranged in the above-mentioned second sealed cavity D. The waterproof filter assembly 300 here means that, unless the assembly is damaged, broken, or the like, under normal use, the second sealed cavity D will not be inadvertently passed through by liquid. On the airflow path, the waterproof filter assembly 300 is located downstream of the impeller assembly 100 and upstream of the filter assembly 108. The filtered airflow containing a small amount of liquid droplets flows to the waterproof filter assembly 300 for filtration, and the airflow filtered by the waterproof filter assembly 300 is then filtered again by the filter assembly 108, and the airflow after the second filtration is finally discharged through the second opening 400. The second opening 400 is arranged on the second frame 1022 and is in fluid communication with the filter cavity, and the vacuum motor of the surface cleaning device provides a vacuum suction force to the impeller assembly through the second opening 400.

[0072] In one example, an airflow channel is formed in the second sealed cavity D, and then the waterproof filter assembly 300 is placed in the airflow channel. The waterproof filter assembly 300 is formed with a sealing ring around it, and the sealing ring is sealed in the circumferential direction to prevent liquid droplets from escaping in the circumferential direction of the waterproof filter assembly 300.

[0073] In one example, the waterproof filtration assembly 300 is a one-way breather, which can be any one or any combination of a one-way valve, a solenoid valve, and a waterproof air-permeable membrane. The one-way valve can be configured to be passively opened, when the vacuuming motor of the surface cleaning device is powered on, the pressure of the vacuuming airflow will open the one-way valve to facilitate the airflow to pass through, while a small amount of liquid droplets are blocked by the circumferentially extending portion of the one-way valve to reduce the risk of the escaped liquid droplets entering the suction motor. In the example of the solenoid valve, the solenoid valve can be configured to be controlled to open or close, when the vacuuming motor of the surface cleaning device is powered on, a signal is sent to the controller, the controller controls the solenoid valve to be powered on to open to facilitate the airflow to pass through, while a small amount of liquid droplets are blocked by the circumferentially extending portion of the one-way valve to reduce the risk of the escaped liquid droplets entering the suction motor. The waterproof air-permeable membrane allows the one-way flow of the gas in the airflow passage 140, and does not allow the liquid in the airflow passage 140 to pass through, thereby achieving the effect of waterproof and air-permeable.

[0074] In the description of the present specification, the description of the terms "one example / way", "some examples / ways", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the example / way or example are included in at least one example / way or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same example / way or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more examples / ways or examples. In addition, the person skilled in the art can combine and combine the different examples / ways or examples described in the present specification and the features of the different examples / ways or examples without contradiction.

[0075] Those skilled in the art should understand that the above examples are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. Other changes or modifications can be made on the basis of the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. An impeller assembly for a surface cleaning apparatus, characterized by, The impeller assembly comprises: a first frame; a first open cavity disposed on the first frame and configured to mate with a second frame of the impeller assembly to form a sealed cavity; an impeller rotatably connected to the second frame; an impeller motor connected to the second frame and configured to drive rotation of the impeller; one or more openings disposed on the second frame and configured to communicate with the one or more impellers; a second open cavity disposed on the second frame and configured to mate with the first frame of the impeller assembly to form a second sealed cavity; a waterproof filter assembly disposed within the second sealed cavity; when the surface cleaning device is in operation, a fluid path is formed from the openings, through the sealed cavity to the second sealed cavity; a filter assembly removably disposed in the second open cavity and configured to impede liquid in the fluid path from passing through the second sealed cavity; wherein the waterproof filter assembly is downstream of the impeller and upstream of the filter assembly.

2. The impeller assembly of claim 1, wherein The filter assembly is one of a check valve, a solenoid valve, and a waterproof air-permeable membrane.

3. The impeller assembly of claim 1, wherein Further comprising a filter cavity disposed on the second frame and downstream of the airflow of the second open cavity, the filter cavity having a removable second filter disposed therein.

4. The impeller assembly of claim 3, wherein The second filter comprises filter cotton or a HEPA filter.

5. The impeller assembly of claim 3, wherein Further comprising a second opening disposed on the second frame and in fluid communication with the filter cavity, the second opening configured to provide a vacuum suction to the impeller assembly by a vacuum motor of the surface cleaning device.

6. A surface cleaning device characterized by, Further comprising: a body; a vacuum motor disposed within the body and configured to provide a vacuum suction to the surface cleaning device; an impeller assembly disposed upstream of the vacuum motor and configured to prevent liquid from entering the vacuum motor; The impeller assembly comprises: a first frame; a first open cavity disposed on the first frame and configured to mate with a second frame of the impeller assembly to form a sealed cavity; an impeller rotatably connected to the second frame; an impeller motor connected to the second frame and configured to drive rotation of the impeller; one or more openings disposed on the second frame and configured to communicate with the one or more impellers; a second open cavity disposed on the second frame and configured to mate with the first frame of the impeller assembly to form a second sealed cavity; a waterproof filter assembly disposed within the second sealed cavity; when the surface cleaning device is in operation, a fluid path is formed from the openings, through the sealed cavity to the second sealed cavity; a filter assembly removably disposed in the second open cavity and configured to impede liquid in the fluid path from passing through the second sealed cavity; wherein the waterproof filter assembly is downstream of the impeller and upstream of the filter assembly.

7. The surface cleaning apparatus of claim 6, wherein, The filter assembly is one of a check valve, a solenoid valve, and a waterproof air-permeable membrane.

8. The surface cleaning apparatus of claim 6, wherein, Further comprising a filter cavity disposed on the second frame and downstream of the airflow of the second open cavity, the filter cavity having a removable second filter disposed therein. The second filter comprises filter cotton or a HEPA filter.

9. The surface cleaning apparatus of claim 6, wherein, The first frame and the second frame are detachably connected, and the first frame is fixedly arranged on the main body.

10. The surface cleaning apparatus of claim 8, wherein, The second opening is provided on the second frame and is in fluid communication with the filtering cavity, and is configured to provide a vacuum suction force to the impeller assembly by the vacuumizing motor through the second opening.

Images