Motor assembly and surface cleaning equipment

Abstract

Embodiments of the present disclosure provide a motor assembly and a surface cleaning device, the motor assembly comprising a housing having an air outlet and a water outlet, a motor body provided within the housing and configured to provide working power, and a cyclone bracket provided between the motor body and the housing and configured to guide a working airflow, wherein the cyclone bracket, the motor body and the housing are provided substantially coaxially, and the working airflow containing water vapor is discharged from the motor body, passes through the cyclone bracket, condenses into a liquid on the inner wall of the housing, and is then discharged from the water outlet, while the working airflow that does not condense into a liquid is discharged from the air outlet. The motor assembly provided in embodiments of the present disclosure has a drainage path and an exhaust path, which separates water vapor from the working airflow entering the fan and simultaneously discharges gas and water from the motor assembly, thereby optimizing the use of the motor assembly.

Description

Technical Field

[0001] [Cross - reference to Related Applications] This application was filed with the Chinese Patent Office on May 6, 2023, claiming priority from the Chinese patent application with application number CN202310505498.6 and invention title "Motor Assembly and Surface Cleaning Equipment", and all of its contents are incorporated herein by reference.

[0002] This disclosure relates to the technical field of surface cleaning equipment, specifically, to a motor assembly and a surface cleaning equipment.

Background Art

[0003] In recent years, with the development of science and technology, various cleaning equipment have been developed one after another. These cleaning equipment reduce the burden of people's cleaning and sweeping work, meet people's needs, and bring great convenience to life.

[0004] [[ID=2Y]] Wet cleaning equipment usually needs to suck cleaning sewage with a fan. When the fan sucks, water vapor may enter the motor assembly. If it is not discharged immediately, it may pollute the shell and damage the appearance of the motor assembly. Furthermore, the sewage accumulates in the housing, and if left for a long time, it will generate a bad smell, and at the same time, a large amount of noise is generated during the process of the fan sucking, which affects the user experience.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The purpose of this disclosure is to provide a motor assembly and a surface cleaning equipment that can immediately discharge the water vapor that has entered the motor assembly.

Means for Solving the Problems

[0006] Embodiments of this disclosure provide a motor assembly, a housing having an air outlet and a water outlet, A motor body provided within the aforementioned housing and configured to provide working power, The motor body and the housing are provided, and the cyclone bracket is configured to guide the working airflow, The cyclone bracket, the motor body, and the housing are arranged substantially coaxially. The working airflow containing water vapor is discharged from the motor body, passes through the cyclone bracket, condenses into liquid on the inner wall of the housing, and is then discharged from the water outlet. The working airflow that does not condense into liquid is discharged from the air outlet.

[0007] In some embodiments, the cyclone bracket is The cyclone bracket includes bracket vanes arranged spirally around the central axis of the bracket, and is configured so that the working airflow is discharged through the gaps between the bracket vanes.

[0008] In some embodiments, the bracket vanes include single-layer vanes and double-layer vanes, and the single-layer vanes and double-layer vanes are spaced apart.

[0009] In some embodiments, the cyclone bracket is The system includes a water collection tank provided around the edge of the cyclone bracket and configured to collect liquid that has condensed on the inner wall of the housing.

[0010] In some embodiments, the edge of the water collection tank is provided sealed against the inner wall of the housing.

[0011] In some embodiments, the cyclone bracket is The collection tank further includes a discharge port provided within the collection tank and configured to guide the liquid in the collection tank to the water outlet.

[0012] In some embodiments, the motor assembly is A first sound-absorbing mesh plate is provided on the cyclone bracket and is provided around the outside of the bracket vanes, The system further includes a second sound-absorbing mesh plate provided on the side of the cyclone bracket away from the bracket vanes.

[0013] In some embodiments, both the first sound-absorbing mesh plate and the second sound-absorbing mesh plate are cylindrical, and the diameter of the second sound-absorbing mesh plate is smaller than the diameter of the first sound-absorbing mesh plate.

[0014] In some embodiments, the motor assembly is The system further includes a first sound-dampening chamber located between the outer wall of the cyclone bracket and the first sound-dampening mesh plate, and configured to dampen the working airflow between the outer wall of the cyclone bracket and the first sound-dampening mesh plate.

[0015] In some embodiments, the motor assembly is The system further includes a second sound-dampening chamber located between the inner wall of the housing and the first sound-dampening mesh plate, and configured to dampen the working airflow between the inner wall of the housing and the first sound-dampening mesh plate.

[0016] In some embodiments, the motor assembly is The system further includes a third sound-dampening chamber located between the outer wall of the cyclone bracket and the second sound-dampening mesh plate, and configured to dampen the working airflow between the outer wall of the cyclone bracket and the second sound-dampening mesh plate.

[0017] In some embodiments, the motor assembly is The system further includes a fourth sound-dampening chamber located between the inner wall of the housing and the second sound-dampening mesh plate, and configured to dampen the working airflow between the inner wall of the housing and the second sound-dampening mesh plate.

[0018] In some embodiments, after the working air flow containing water vapor is discharged from the motor body, it is spirally blown out from the gaps between the bracket blades of the cyclone bracket and condenses into liquid on the inner wall of the housing. The liquid is collected by a water collecting tank and led from the water discharging hole of the water collecting tank to the water outlet for discharging.

[0019] In some embodiments, after the working air flow is discharged from the motor body, it is spirally blown out from the cyclone bracket, passes through the first sound-absorbing mesh plate, then returns to the first sound-absorbing mesh plate again and is discharged from the air outlet.

[0020] In some embodiments, after the working air flow is discharged from the motor body, it is spirally blown out from the cyclone bracket, passes through the first sound-absorbing mesh plate, then returns to the inside of the first sound-absorbing mesh plate again and enters the inside of the second sound-absorbing mesh plate. Then it is blown out from the second sound-absorbing mesh plate and discharged from the air outlet.

[0021] In some embodiments, the air outlet is located on the side surface of the housing, and the water outlet is located on the bottom surface of the housing.

[0022] The embodiments of the present disclosure provide a surface cleaning device including the motor assembly described in any one of the above items.

Brief Description of the Drawings

[0023] The attached drawings here are incorporated into the specification and form a part of the specification, showing the embodiments applicable to the present disclosure and used to interpret the principles of the present disclosure together with the specification. Obviously, the attached drawings described below are only some embodiments of the present disclosure, and those skilled in the art can obtain other drawings based on these attached drawings without creative labor.

[0024] [Figure 1] It is a schematic diagram of the overall structure of the motor assembly of some embodiments of the present disclosure. [Figure 2]This is a schematic diagram of a partial cross-sectional structure of a motor assembly in some embodiments of the present disclosure. [Figure 3] This is a schematic diagram of the three-dimensional structure of a cyclone bracket in some embodiments of the present disclosure. [Figure 3a] This is a schematic diagram of the three-dimensional structure of a cyclone bracket from a different angle in some embodiments of the present disclosure. [Figure 3b] This is a schematic diagram of the three-dimensional structure of a cyclone bracket from a different angle in some embodiments of the present disclosure. [Figure 4] This is a schematic diagram of the structure of the sound-dampening chamber of a motor assembly in some embodiments of the present disclosure. [Figure 5] This is a schematic diagram of the water flow path structure of a motor assembly in some embodiments of the present disclosure. [Figure 6] This is a schematic diagram of the structure of the airflow path of a motor assembly in some embodiments of the present disclosure. [Figure 7] This is a schematic diagram of the structure of the airflow path of a motor assembly in some other embodiments of the present disclosure. [Modes for carrying out the invention]

[0025] To further clarify the purpose, technical solutions, and advantages of this disclosure, the disclosure will be described in more detail below with reference to the accompanying drawings, although obviously the embodiments described are only a selection of the embodiments of this disclosure, not all of them. Any other embodiments that can be obtained by a person skilled in the art without any creative work based on the embodiments of this disclosure are all covered by this disclosure.

[0026] The terms used in the embodiments of this application are used solely for the purpose of describing specific embodiments and are not intended to limit this application. The singular forms “one kind,” “the said,” and “the” used in the embodiments and appended claims of this application are intended to include plural forms unless otherwise clearly indicated in the context, and “plural” generally includes at least two.

[0027] It should be noted that the terms "and / or" used herein merely describe the relationship between related objects, and there are three possible relationships. For example, A and / or B can refer to three cases: A existing alone, A and B existing together, or B existing alone. Furthermore, the letter " / " in this specification generally indicates that the preceding and succeeding related objects have an "or" relationship.

[0028] Furthermore, while terms such as first, second, third, etc. are used descriptively in the embodiments of this application, they are not limiting. These terms are used solely for distinction. For example, the first may also be called the second, and similarly, the second may also be called the first, as long as it does not deviate from the scope of the embodiments of this application.

[0029] Furthermore, the terms “equipped with,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, and a product or apparatus comprising a set of elements may also include, in addition to those elements, other elements not explicitly listed, or elements specific to such product or apparatus. Unless further restrictions are placed on it, an element limited by the expression “equipped with one…” is not excluded from including other similar elements in the product or apparatus of the said element.

[0030] Selective embodiments of this disclosure will be described in detail below with reference to the attached drawings. The main assembly of surface cleaning equipment provides suction force for the cleaning equipment's operation, and the working airflow enters the main assembly before being discharged. In this process, some water vapor enters the main assembly along with the working airflow. In related technologies, the water vapor is discharged from the air outlet of the main assembly along with the working airflow, but complete discharge may not be possible. As a result, some water vapor accumulates inside the main assembly, and if it accumulates for a long period of time, it may affect the service life of the main assembly.

[0031] Embodiments of the present disclosure provide a motor assembly comprising a housing having an air outlet and a water outlet; a motor body provided within the housing and configured to provide working power; and a cyclone bracket provided between the motor body and the housing and configured to guide a working airflow, wherein the cyclone bracket, the motor body and the housing are provided substantially coaxially, and the working airflow containing water vapor is discharged from the motor body, passes through the cyclone bracket, condenses into a liquid on the inner wall of the housing, and is then discharged from the water outlet, while the working airflow that does not condense into a liquid is discharged from the air outlet.

[0032] The motor assembly provided in the embodiments of this disclosure includes a cyclone bracket, which causes the water vapor-containing gas discharged from the motor body to form a rotating airflow due to the induction of the cyclone bracket. This further enhances the water vapor separation effect within the motor assembly through a cyclone separation method, causing most of the water vapor to condense on the inner wall of the housing and then flow out through the water outlet, thereby reducing the proportion of water in the gas discharged from the air outlet.

[0033] Specifically, embodiments of this disclosure provide motor assemblies, and as an example, Figure 1 is a schematic diagram of the overall structure of a motor assembly of one embodiment of this disclosure. Figure 2 is a schematic diagram of a partial cross-sectional structure of a motor assembly of one embodiment of this disclosure.

[0034] To more clearly explain the behavior of the motor assembly, the following directions are defined as shown in Figure 1: The motor assembly is calibrated by three mutually perpendicular axes: the lateral axis Y, the longitudinal axis X, and the central vertical axis Z. The central vertical axis Z is the direction of the central axis M of the motor assembly, and the direction perpendicular to the axial direction is the radial direction, which lies in the XY plane, where the reverse direction of the arrow along the longitudinal axis X is indicated as "rear" and the direction of the arrow along the longitudinal axis X is indicated as "forward". The direction of the arrow along the lateral axis Y is the "left side" of the motor assembly, and the reverse direction of the arrow along the lateral axis Y is the "right side" of the motor assembly. The vertical axis Z is the direction extending upward along the bottom surface of the motor assembly, the direction of the arrow along the vertical axis Z is the "upper side" of the motor assembly, and the reverse direction of the arrow along the vertical axis Z is the "lower side" of the motor assembly.

[0035] Specifically, as shown in Figures 1 and 2, an embodiment of the present disclosure provides a motor assembly 100, which is used to provide power for cleaning work, the motor assembly 100 includes a housing 10, the housing 10 is columnar, for example cylindrical, and the housing 10 has an air outlet 11 and a water outlet 12, the air outlet 11 is used to discharge the working airflow, and the water outlet 12 is used to discharge the water flow formed by condensation of water vapor contained in the working airflow, the motor assembly 100 further includes a motor body 20, the motor body 20 is provided within the housing 10, the motor body 20 is configured to provide suction force, the motor body 20 has an air inlet 21 and an air outlet 22, and the motor assembly 100 is The system further includes a cyclone bracket 40, which is provided between the motor body 20 and the housing 10, and is configured to guide the working airflow. Herein, the cyclone bracket 40, the motor body 20 and the housing 10 are provided substantially coaxially, that is, the central axes of the cyclone bracket 40, the motor body 20 and the housing 10 substantially coincide with the central axis M in the Z direction. The working airflow containing water vapor is discharged from the motor body 20 and then the cyclone bracket 40 forms a rotating airflow. The water vapor condenses into a liquid on the inner wall of the housing 10 and is then discharged from the water outlet 12. The working airflow from which the water vapor has been removed is then discharged from the air outlet 11. The cyclone bracket effectively separates water vapor using a cyclone separation method, with most of the water vapor condensing on the inner wall of the housing. The condensed water is immediately discharged from the water outlet, maintaining a nearly constant state of no residual water inside the motor assembly. This extends the service life of the motor assembly and prevents wastewater from being discharged from the air outlet, thus preventing environmental pollution.

[0036] In some embodiments, as shown in Figure 1, the air outlet 11 of the housing 10 is located on the side of the housing and can be selected to be positioned at a predetermined height from the bottom of the housing 10, for example, at 1 / 3 of the height of the housing, thereby preventing impurities from entering the housing if the height of the air outlet is too low. At the same time, the water outlet 12 is located on the bottom of the housing 10 and the water flow is discharged from the water outlet 12 on the bottom of the housing, thereby preventing water from accumulating inside the housing. There are multiple air outlets 11, and the shape of each air outlet 11 is a strip-like structure that extends substantially along the axial direction, for example, rectangular, track-shaped, or elliptical, and the strip-like structure of the air outlet coincides with the flow direction of the working airflow, which is advantageous for airflow discharge.

[0037] In some embodiments, as shown in Figure 3, the cyclone bracket 40 is provided within the housing 10 of the motor assembly 100 and supports the motor body 20, while supporting the first sound-absorbing mesh plate 30 and the second sound-absorbing mesh plate 50. Specifically, the cyclone bracket 40 has a central through-hole 45, the center of which lies on the central axis M of the cyclone bracket 40, and the central through-hole 45 is used to house the motor body 20. The cyclone bracket 40 includes bracket vanes 41, which are spirally arranged on the upper side of the cyclone bracket 40 around the central axis M of the cyclone bracket 40, and the bracket vanes 41 are configured so that the working airflow is discharged through the gaps between the bracket vanes 41. Here, the bracket vanes 41 are spiral-shaped, and the outer contour trajectory is substantially a circle centered on the central axis M of the cyclone bracket 40. The working airflow enters from the air inlet 21 of the motor body 20 and exits from the air outlet 22. Due to the rotation of the motor body, the working airflow exiting from the air outlet 22 becomes a roughly spiral airflow. This spiral airflow rotates along the top of the central through-hole 45 and is guided by the spiral bracket vanes 41, which smoothly guide out through the gaps between the bracket vanes 41. This reduces resistance during the airflow guide-out process, reduces airflow noise, and reduces the power consumption of the motor body. Furthermore, the bracket vanes 41 reduce airflow resistance while simultaneously achieving an airflow rectification effect, increasing sound directivity and improving the noise reduction effect to a certain extent when passing through the sound-dampening chamber.

[0038] In some embodiments, as shown in Figure 3, the bracket vane 41 includes single-layer vanes and double-layer vanes, and the single-layer vanes and double-layer vanes are spaced apart to form a gap for guiding the working airflow. Here, the single-layer vanes are arranged in an arc shape and spirally on the upper side of the cyclone bracket 40, and the double-layer vanes have a first flow guide surface 411, a second flow guide surface 412, and a third flow guide surface 413. The first flow guide surface 411, the second flow guide surface 412, and the third flow guide surface 413 are connected in series to form the double-layer vane. Here, the first flow guide surface 411 and the second flow guide surface 412 are located on approximately the same side of the double-layer vane, and the third flow guide surface 413 is on a different side of the double-layer vane. The first flow guide surface 411 forms the side surface, and its curvature is approximately the same as that of the central through hole 45. It is basically positioned in the direction of the central axis M. The first flow guide surface 411 guides the working airflow from the air outlet 22 of the motor body to the second flow guide surface 412. The radius of curvature of the second flow guide surface 412 is approximately the same as that of the single-layer blades. The single-layer blades are arranged in parallel to form a gap, through which the working airflow is guided out. The third flow guide surface 413 is connected to the ends of the first flow guide surface 411 and the second flow guide surface 412 to form a closed double-layer blade. The third flow guide surface 413 also forms a gap between itself and the single-layer blades, through which the working airflow is guided out. Optionally, a positioning column 46 extending along the direction of the central axis M is further provided on the third flow guide surface 413, and the positioning column 46 is used to fix the cyclone bracket 40 inside the housing 10.

[0039] In some embodiments, as shown in Figure 3, the cyclone bracket 40 further includes a water collection tank 42, which is provided around the edge of the cyclone bracket 40 and configured to collect liquid condensed on the inner wall of the housing 10. The water collection tank 42 has an upwardly projecting outer edge, which is located outside the outer end of the bracket vane 41, forming the water collection tank 42 between the outer edge of the water collection tank 42 and the outer end of the bracket vane 41, so that the water collection tank 42 collects liquid that slowly condenses on the inner wall of the housing 10, preventing the liquid from flowing into the housing through gaps in the inner wall of the housing, damaging electronic devices inside the housing, or causing a buildup of contaminated water.

[0040] In some embodiments, the outer edge of the water collection tank 42 is sealed to the inner wall of the housing 10, for example, a groove is formed on the side of the outer edge of the water collection tank 42, and a sealing member is provided in the groove for sealing. This prevents liquid from flowing into the housing through gaps in the inner wall of the housing, damaging the electronic devices inside the housing, or causing wastewater to accumulate.

[0041] In some embodiments, the cyclone bracket 40 further has discharge holes 43, which are located within the water collection tank 42 and are configured to guide the liquid in the water collection tank 42 to the water outlet 12. Optionally, the discharge holes 43 guide the liquid through an outlet pipe 44, and the number of discharge holes 43 may be 1 to 6, for example, 2, 3, or 4.

[0042] In some embodiments, as shown in Figure 3a, the lower side of the cyclone bracket 40 further includes a central sleeve 47, the central sleeve 47 is cylindrical, a through hole formed in the center of the central sleeve 47 constitutes part of the central through hole 45, the central axis of the central sleeve 47 coincides with the central axis M of the cyclone bracket 40, the central sleeve 47 extends from bottom to top above the water collection tank 42 and abuts against the lower surface of the end face where the bracket vanes 41 are located, and the central sleeve 47 is used to house the air intake end of the motor body 20. As shown in Figure 3b, a sleeve blade 471 is provided between the outside of the central sleeve 47 and the water collection tank 42. The sleeve blade 471 includes a first blade 4711 and a second blade 4712, the first blade 4711 and the second blade 4712 having a single-layer structure and a double-layer structure, respectively. The first blade 4711 and the second blade 4712 are spaced apart to form a gap that guides the working airflow. Here, the first blade 4711 is provided in an arc shape and is arranged spirally on the outside of the central sleeve 47, and the second blade 4712 has a fourth flow guide surface 47121 and a fifth flow guide surface 47122, the fourth flow guide surface 47121 and the fifth flow guide surface 47122 are also arc surfaces. After the working airflow is blown out by the bracket vanes 41, the airflow reflected by the housing enters the lower side of the cyclone bracket 40 through the gap in the upper sleeve vanes 471 of the water collection tank 42, and then flows downward along the central sleeve 47 and is discharged from the air outlet. Optionally, a positioning column extending along the direction of the central axis M is also provided on the second vane 4712, and the positioning column is used to fix the cyclone bracket within the housing.

[0043] In some embodiments, the motor assembly 100 further includes a first sound-dampening mesh plate 30, which is cylindrical and has a plurality of holes distributed on it, which is mounted on the cyclone bracket 40 and is positioned on the same side of the cyclone bracket 40 together with the bracket vanes 41, for example, on the upper side of the cyclone bracket 40, which is mounted around the outside of the bracket vanes 41, which extends upward along substantially the plane of the water collection tank 42 to the plane of the top of the bracket vanes 41, which can dampen the working airflow as it passes through the holes in the first sound-dampening mesh plate 30, which at the same time condenses along the side walls (inner or outer walls) of the first sound-dampening mesh plate before passing through the holes, which then flows down along the side walls of the first sound-dampening mesh plate and flows out through the water outlet.

[0044] The motor assembly 100 further includes a second sound-absorbing mesh plate 50, which is provided on the side of the cyclone bracket 40 away from the bracket vanes 41. Specifically, the second sound-absorbing mesh plate 50 is provided on the outside of the central sleeve 47. The second sound-absorbing mesh plate 50 is cylindrical, and a portion of the second sound-absorbing mesh plate 50 extends above the plane where the water collection tank 42 is located, forming a locally two-layer inner and outer structure with the first sound-absorbing mesh plate 30. Multiple mesh holes are distributed on the second sound-absorbing mesh plate 50. The working airflow can be silenced as it passes through the mesh holes of the second sound-absorbing mesh plate 50. At the same time, the working airflow containing some water vapor condenses on the side wall (inner wall or outer wall) of the second sound-absorbing mesh plate before passing through the mesh holes, and then flows down along the side wall of the second sound-absorbing mesh plate and out through the water outlet.

[0045] As the working airflow flows vertically along the side walls (inner or outer walls) of the first sound-absorbing mesh plate 30 or the second sound-absorbing mesh plate 50, the sound is reflected and refracted by the first sound-absorbing mesh plate 30 or the second sound-absorbing mesh plate 50 and the bottom surface of the housing, forming a propagation pattern that overlaps with each other approximately along the axial direction of the first sound-absorbing mesh plate 30 or the second sound-absorbing mesh plate 50. This complements the axial sound absorption within the sound-absorbing chamber and more effectively eliminates noise in the mid-to-low frequency range of approximately 3000 Hz or less.

[0046] In some embodiments, the diameter of the cylinder formed by the second sound-absorbing mesh plate 50 is smaller than the diameter of the cylinder formed by the first sound-absorbing mesh plate 30, and the second sound-absorbing mesh plate 50 and the first sound-absorbing mesh plate 30 form a two-layer structure in the radial direction, with the working airflow entering both the inner and outer sides of the second sound-absorbing mesh plate 50 as it flows from top to bottom, thereby circulating and silencing the airflow and maximizing the functions of airflow circulation and silencing.

[0047] The working airflow generated by the motor body 20 propagates to the outside through the first sound-absorbing mesh plate 30 and the second sound-absorbing mesh plate 50, and noise of various frequencies is generated during the airflow propagation process. Sound is filtered and silenced as it passes through the holes in the first sound-absorbing mesh plate 30 and the second sound-absorbing mesh plate 50, that is, it is possible to filter out sound in a specific frequency range. The filtering and silencer effect depends on the density of the holes (i.e., the number of holes per unit area), the diameter of the holes, and the thickness of the porous plate. Here, the higher the density of the holes, the higher the silenced frequency band, and the higher the thickness of the porous plate, the lower the silenced frequency band.

[0048] As shown in Figure 4, when sound passes through the first sound-absorbing mesh plate 30 and the second sound-absorbing mesh plate 50, reflection and refraction of sound occur before and after the first sound-absorbing mesh plate 30 and the second sound-absorbing mesh plate 50. As a result, the incident sound wave and the reflected sound wave overlap, creating a sound-absorbing effect. The maximum sound-absorbing effect is obtained when the phase difference of the overlap between the incident sound wave and the reflected sound wave is 180 degrees. Therefore, the sound-absorbing effect can be adjusted by rationally setting the radial depth of the sound-absorbing chamber.

[0049] In some embodiments, as shown in Figure 4, the motor assembly 100 further includes a first silencing chamber 110 located between the outer wall of the cyclone bracket 40 and the first silencing mesh plate 30, and the first silencing chamber 110 is configured to silence the working airflow between the outer wall of the cyclone bracket 40 and the first silencing mesh plate 30, the working airflow being blown out from the gaps in the bracket vanes 41 and entering between the outer wall of the cyclone bracket 40 and the first silencing mesh plate 30, a portion of the airflow exiting from the first mesh holes being reflected in the opposite direction to the airflow blown out from the gaps in the bracket vanes 41, forming a primary silencing mode.

[0050] In some embodiments, the motor assembly 100 further includes a second silencing chamber 120 located between the inner wall of the housing 10 and the first silencing mesh plate 30, and the second silencing chamber 120 is configured to silencing the working airflow between the inner wall of the housing 10 and the first silencing mesh plate 30. The working airflow is blown out from the gaps of the bracket vanes 41, and the airflow blown out from the first mesh holes of the first silencing mesh plate 30 enters between the inner wall of the housing 10 and the first silencing mesh plate 30, where the working airflow is reflected by the inner wall of the housing in the opposite direction to the airflow blown out from the first mesh holes, forming a secondary silencing mode.

[0051] In some embodiments, the motor assembly 100 further includes a third silencing chamber 130 located between the outer wall of the cyclone bracket 40 and the second silencing mesh plate 50, and the third silencing chamber 130 is configured to silence the working airflow between the outer wall of the cyclone bracket 40 and the second silencing mesh plate 50. The working airflow enters between the outer wall of the cyclone bracket 40 and the second silencing mesh plate 50, is reflected by the outer wall of the cyclone bracket 40, and is in the opposite direction to the airflow entering through the second mesh holes of the second silencing mesh plate 50, forming a tertiary silencing mode.

[0052] In some embodiments, the motor assembly 100 further includes a fourth silencing chamber 140, which is located between the inner wall of the housing 10 and the second silencing mesh plate 50, and is configured to silencing the working airflow between the inner wall of the housing 10 and the second silencing mesh plate 50. The working airflow is blown out from the second mesh holes of the second silencing mesh plate 50 and then enters between the inner wall of the housing 10 and the second silencing mesh plate 50, where the working airflow is reflected by the inner wall of the housing in the opposite direction to the airflow blown out from the second mesh holes, forming a fourth silencing mode.

[0053] As described above, in the motor assembly of this disclosure, the working airflow is blown out spirally from the cyclone bracket and then sequentially passes through one, two, three, or four of the four sound-absorbing chambers, and is simultaneously silenced by the holes in the first sound-absorbing mesh plate or the second sound-absorbing mesh plate, thereby significantly reducing noise caused by the working airflow through multiple sound-absorbing processes.

[0054] In some embodiments, Figure 5 is a schematic diagram of the water flow path structure of a motor assembly in some embodiments of the present disclosure, where the arrows in Figure 5 generally indicate the flow direction of the working airflow. As shown in Figure 5, the working airflow containing water vapor enters from the air inlet 21 of the motor body 20, is discharged from the motor body 20, and is then blown out spirally from the gaps in the bracket vanes 41 of the cyclone bracket 40. The working airflow passes through the first mesh holes of the first sound-absorbing mesh plate 30 and is blown directly onto the inner wall of the housing 10, where it condenses into a liquid. The liquid is collected in the water collection tank 42 and guided to the water outlet 12 through the discharge holes 43 of the water collection tank 42 for discharge.

[0055] In some embodiments, Figure 6 is a schematic diagram of the airflow path structure of a motor assembly in some embodiments of the present disclosure, where the arrows in Figure 6 generally indicate the direction of the working airflow. As shown in Figure 6, the working airflow containing water vapor is discharged from the motor body 20, then spirally blown out from the gaps in the bracket vanes 41 of the cyclone bracket 40, passes through the first sound-absorbing mesh plate 30, and the airflow that does not condense into liquid on the inner wall of the housing 10 returns to the inside of the first sound-absorbing mesh plate 30, flows downward, and is discharged from the air outlet 11.

[0056] In some embodiments, Figure 7 is a schematic diagram of the airflow path structure of a motor assembly in some embodiments of the present disclosure, where the arrows in Figure 7 generally indicate the direction of the working airflow. As shown in Figure 7, the working airflow containing water vapor is discharged from the motor body 20, then blown out spirally from the gaps in the bracket vanes 41 of the cyclone bracket 40, passes through the first sound-absorbing mesh plate 30, and the airflow that does not condense into liquid on the inner wall of the housing 10 returns to the inside of the first sound-absorbing mesh plate 30, enters the inside of the second sound-absorbing mesh plate 50, and is then blown out from the second sound-absorbing mesh plate 50 and discharged from the air outlet 11.

[0057] The two airflow paths described above do not necessarily have to exist independently; they may intersect in some cases, but they jointly form the airflow blown out from the air outlet.

[0058] Embodiments of this disclosure provide a surface cleaning device comprising the motor assembly described in any one of the above paragraphs.

[0059] In the motor assembly provided by the embodiments of this disclosure, a cyclone bracket is provided so that after the motor body inhales gas containing contaminated water, water vapor is separated inside the motor assembly by a cyclone separation method, and most of the contaminated water condenses on the inner wall of the housing or on the sound-absorbing mesh plate and then flows out from the water outlet, thereby reducing the proportion of water content in the gas discharged from the air outlet. Furthermore, by providing a first sound-absorbing mesh plate and a second sound-absorbing mesh plate in the air passage, operating noise is reduced and the use of the motor assembly is optimized.

[0060] Finally, note that each example in this specification is described incrementally, each example focuses on its differences from the others, and identical or similar parts between examples may be referenced to one another.

[0061] The above embodiments are used to illustrate the technical solutions of the present disclosure and are not limiting thereto. While the present disclosure has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in each of the above embodiments can still be modified or some of their technical features can be replaced by equivalent substitutions, and that such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present disclosure. [Explanation of symbols]

[0062] 100 Motor Assembly 10 Housing 11 Air outlet 12 water outlet 20 Motor body 21 Air Inlet 22 Air outlet 40 Cyclone Bracket 41 Bracket Wings 411 1st flow guide surface 412 2nd flow guide surface 413 3rd flow guide surface 42 Water collection tank 43 Water outlet 44 Outlet pipe 45 Center through hole 46 Stereotaxic pillar 30. First sound-dampening mesh plate 50. Second sound-dampening mesh plate 110 1st sound deadening room 120 2nd sound deadening room 130 3rd sound deadening room 140 No. 4 sound deadening room

Claims

1. A housing having an air outlet and a water outlet, A motor body provided within the aforementioned housing and configured to provide working power, It includes a cyclone bracket provided between the motor body and the housing and configured to guide the working airflow, A motor assembly wherein the cyclone bracket, the motor body, and the housing are arranged substantially coaxially, and the working airflow containing water vapor is discharged from the motor body, passes through the cyclone bracket, condenses into liquid on the inner wall of the housing, and is then discharged from the water outlet, while the working airflow that does not condense into liquid is discharged from the air outlet.

2. The cyclone bracket is, The motor assembly according to claim 1, comprising bracket vanes arranged spirally around the central axis of the cyclone bracket, wherein the working airflow is discharged from the gaps between the bracket vanes.

3. The motor assembly according to claim 2, wherein the bracket blades include single-layer blades and double-layer blades, and the single-layer blades and double-layer blades are spaced apart.

4. The cyclone bracket is, The motor assembly according to claim 1, further comprising a water collection tank provided around the edge of the cyclone bracket and configured to collect liquid condensed on the inner wall of the housing.

5. The motor assembly according to claim 4, wherein the edge of the water collection tank is provided sealed to the inner wall of the housing.

6. The cyclone bracket is, The motor assembly according to claim 4, further comprising a discharge port provided in the water collection tank and configured to guide the liquid in the water collection tank to the water outlet.

7. The motor assembly is A first sound-absorbing mesh plate is provided on the cyclone bracket and is provided around the outside of the bracket vanes, The motor assembly according to claim 2, further comprising a second sound-absorbing mesh plate provided on the side of the cyclone bracket away from the bracket blades.

8. The motor assembly according to claim 7, wherein both the first sound-absorbing mesh plate and the second sound-absorbing mesh plate are cylindrical, and the diameter of the second sound-absorbing mesh plate is smaller than the diameter of the first sound-absorbing mesh plate.

9. The motor assembly is The motor assembly according to claim 7, further comprising a first sound-dampening chamber located between the outer wall of the cyclone bracket and the first sound-dampening mesh plate, configured to dampen the working airflow between the outer wall of the cyclone bracket and the first sound-dampening mesh plate.

10. The motor assembly is The motor assembly according to claim 7, further comprising a second sound-dampening chamber provided between the inner wall of the housing and the first sound-dampening mesh plate, configured to dampen the working airflow between the inner wall of the housing and the first sound-dampening mesh plate.

11. The motor assembly is The motor assembly according to claim 7, further comprising a third sound-dampening chamber located between the outer wall of the cyclone bracket and the second sound-dampening mesh plate, and configured to dampen the working airflow between the outer wall of the cyclone bracket and the second sound-dampening mesh plate.

12. The motor assembly is The motor assembly according to claim 7, further comprising a fourth sound-dampening chamber located between the inner wall of the housing and the second sound-dampening mesh plate, and configured to dampen the working airflow between the inner wall of the housing and the second sound-dampening mesh plate.

13. The motor assembly according to claim 1, wherein the working airflow containing water vapor is discharged from the motor body, then blown out in a spiral manner from the gaps in the bracket vanes of the cyclone bracket, where it condenses into a liquid on the inner wall of the housing, and the liquid is collected by a water collection tank and guided to the water outlet through the discharge hole of the water collection tank for discharge.

14. The motor assembly according to claim 1, wherein the working airflow is discharged from the motor body, then blown out spirally from the cyclone bracket, passes through the first sound-absorbing mesh plate, and then returns to the first sound-absorbing mesh plate and is discharged from the air outlet.

15. The motor assembly according to claim 1, wherein the working airflow is discharged from the motor body, then blown out spirally from the cyclone bracket, passes through the first sound-absorbing mesh plate, returns to the inside of the first sound-absorbing mesh plate, enters the inside of the second sound-absorbing mesh plate, and is then blown out from the second sound-absorbing mesh plate and discharged from the air outlet.

16. The motor assembly according to claim 1, wherein the air outlet is located on the side of the housing and the water outlet is located on the bottom surface of the housing.

17. A surface cleaning device comprising a motor assembly according to any one of claims 1 to 16.

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