Portable vacuum cleaner and surface cleaning apparatus

Abstract

The present application relates to the field of cleaning equipment, and more particularly to a portable dust collector and a surface cleaning apparatus. The portable dust collector includes a housing defining a dust collection chamber, a gas-solid separator disposed in the dust collection chamber, an air inlet tube having an air inlet, the air inlet tube being in fluid communication with the dust collection chamber, an air inlet bypass independent of the dust collection chamber and having a bypass opening on the housing, a suction motor disposed inside the housing, the portable dust collector forming a first vacuum path from the air inlet to the suction motor and a second vacuum path from the bypass opening to the suction motor, the gas-solid separator being located on the first vacuum path, a valve mechanism actuable between a closed state to prevent fluid flow along the second vacuum path and an open state to allow fluid flow along the second vacuum path, the valve mechanism including a valve disposed in the air inlet bypass, and a rechargeable battery electrically connected to the suction motor. When used independently, the portable dust collector can avoid debris from falling into the air inlet bypass.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment, and in particular to a portable vacuum cleaner and surface cleaning device. Background Technology

[0002] A wet / dry surface cleaning device is available, comprising a cleaning base that can contact the surface to be cleaned, an upright body rotatably mounted on the cleaning base, a portable vacuum cleaner detachably mounted on the upright body, a cleaning fluid tank, and a waste liquid collection tank. The portable vacuum cleaner is equipped with a suction motor to generate a suction flow, a dust collection chamber for storing debris, and a gas-solid separator installed within the dust collection chamber. The portable vacuum cleaner can be mounted on the upright body as the suction source for the surface cleaning device, or it can be detached from the upright body and used independently as a dry vacuum cleaner.

[0003] However, since surface cleaning equipment uses a wet cleaning method, when a portable vacuum cleaner is used as the suction source for surface cleaning equipment, the suction flow passing through the dust collection chamber inevitably carries water vapor. This water vapor combines with the debris in the dust collection chamber to form a viscous mixture, which can easily clog the dust collection chamber, gas-solid separator, etc. Summary of the Invention

[0004] In view of the aforementioned technical problem that portable vacuum cleaners are prone to clogging when used as suction sources for surface cleaning devices, the purpose of this invention is to provide a portable vacuum cleaner and surface cleaning device with an air intake bypass.

[0005] To achieve the above objectives, the present invention provides the following first technical solution: a portable vacuum cleaner, comprising: a housing defining a dust collection chamber; a gas-solid separator disposed within the dust collection chamber; an air inlet pipe having an air inlet, the air inlet pipe being in fluid communication with the dust collection chamber; an air inlet bypass independent of the dust collection chamber and having a bypass port located on the housing; a suction motor disposed inside the housing, the portable vacuum cleaner forming a first vacuum path from the air inlet to the suction motor and a second vacuum path from the bypass port to the suction motor, the gas-solid separator being located on the first vacuum path; a valve mechanism disposed at the air inlet bypass and including a valve disposed in the air inlet bypass, the valve mechanism being operable between a closed state preventing fluid from flowing along the second vacuum path and an open state allowing fluid to flow along the second vacuum path; and a rechargeable battery electrically connected to the suction motor.

[0006] In the first technical solution described above, preferably, the valve mechanism includes a control component located on the housing and operable by a user; the control component is driven by the valve to control the valve mechanism to switch between the closed state and the open state.

[0007] In the first technical solution described above, preferably, the valve mechanism includes an elastic reset member; the elastic reset member is driven by the valve so that the valve can automatically switch from the open state to the closed state.

[0008] In the first technical solution described above, preferably, the housing includes a separable dust cup, the dust collection chamber is located inside the dust cup, and the air inlet is located at the bottom of the dust cup.

[0009] In the above preferred embodiment, it is further preferred that the bypass port is located on one side of the dust cup.

[0010] In the preferred embodiment described above, and even more preferably, the portable vacuum cleaner includes a first filter located between the dust collection chamber and the suction motor.

[0011] In the preferred embodiment described above, even more preferably, the intake bypass includes a first section located outside the dust cup and arranged side by side with the dust cup, and a second section perpendicular to the first section.

[0012] On the other hand, the present invention also provides the following second technical solution: a surface cleaning device, the surface cleaning device comprising: a cleaning base including at least one roller cavity, a plurality of brush rollers rotatably arranged in the at least one roller cavity, and a plurality of suction nozzles located inside the cleaning base and in fluid communication with the at least one roller cavity; a portable vacuum cleaner comprising: a housing defining a dust collection chamber; a gas-solid separator disposed in the dust collection chamber; an air inlet pipe having an air inlet, the air inlet pipe being in fluid communication with the dust collection chamber; an air inlet bypass independent of the dust collection chamber and having a bypass port located on the housing; a suction motor disposed inside the housing, the portable vacuum cleaner forming a first vacuum path from the air inlet to the suction motor and a second vacuum path from the bypass port to the suction motor, the gas-solid separator having a valve mechanism located on the first vacuum path, configured at the air inlet bypass and including a valve mechanism located on the gas inlet bypass. The system includes a valve in the intake bypass, the valve mechanism being operable between a closed state that prevents fluid from flowing along the second vacuum path and an open state that allows fluid to flow along the second vacuum path; a rechargeable battery electrically connected to the suction motor; an upright body rotatably connected to the cleaning base, the upright body having a mounting base for detachable installation of the portable vacuum cleaner, the mounting base having a pair of interfaces; when the portable vacuum cleaner is installed on the mounting base, the interfaces are in fluid communication with the second vacuum path; a cleaning fluid tank detachably connected to the upright body or the cleaning base and providing cleaning fluid to the plurality of brush rollers; and a wastewater recovery tank for intercepting and storing wastewater, the wastewater recovery tank being detachably connected to the upright body, the plurality of suction nozzles, the wastewater recovery tank, and the interfaces being in sequential fluid communication to form a fluid input path.

[0013] In the second technical solution described above, preferably, the valve mechanism includes a control component located on the housing; the control component is tractively arranged with the valve mechanism to control the valve mechanism to switch between the closed state and the open state.

[0014] In the second technical solution described above, preferably, the valve mechanism includes an elastic reset member; the elastic reset member is driven by the valve so that the valve mechanism can automatically switch from the open state to the closed state. Further preferably, the mounting base is provided with a trigger member and a connector adapted to the valve mechanism; when the portable vacuum cleaner is mounted on the mounting base, the trigger member causes the valve mechanism to switch from the closed state to the open state, and the connector connects to the bypass port. Further preferably, the trigger member includes a protrusion, and the connector is integrated into the top of the protrusion. Further preferably, the mounting base has a groove adapted to the air inlet, the groove receiving at least a portion of the air inlet pipe and blocking the air inlet when the portable vacuum cleaner is mounted on the mounting base.

[0015] In the second technical solution described above, preferably, the portable vacuum cleaner further includes a plurality of exhaust ports located on the side of the housing and fluidly communicating with the suction motor and the outside, wherein the plurality of exhaust ports are hidden when the portable vacuum cleaner is mounted on the mounting base.

[0016] In the second technical solution described above, preferably, the portable vacuum cleaner includes a first filter, which is located in the first vacuum path and between the dust collection chamber and the suction motor.

[0017] In the second technical solution described above, preferably, a second filter is provided on the top of the wastewater recovery tank, and the second filter is located on the fluid input path.

[0018] In the second technical solution described above, preferably, the housing includes a detachable dust cup, the dust collection chamber is located inside the dust cup, and the air inlet is located at the bottom of the dust cup. More preferably, the bypass port is located on one side of the dust cup.

[0019] Compared to existing technologies, the portable vacuum cleaners provided by the first and second technical solutions of this invention, when used independently, have a valve mechanism in a closed state that can seal the air intake bypass to prevent debris from falling into the air intake bypass. When the portable vacuum cleaner is used as a suction source for surface cleaning equipment, the air intake bypass is connected to the fluid input path of the upright body, and the suction flow carrying water vapor directly reaches the suction motor through the air intake bypass without contacting the debris in the dust collection chamber, thereby avoiding the situation where water vapor and debris combine to cause blockage. Attached Figure Description

[0020] Figure 1 This is a perspective structural diagram of the surface cleaning device provided by the present invention; Figure 2 for Figure 1 A side sectional view of the surface cleaning equipment shown. Figure 3 for Figure 2 A magnified view of a portion at point A; where the arrow indicates the direction of the suction flow generated when the portable vacuum cleaner is mounted on an upright body and in operation; Figure 4 for Figure 2 A partial enlarged view of the cleaning base in the side sectional view shown; Figure 5 for Figure 1 Side view of the surface cleaning equipment shown Figure 1 Among them, the upright body is tilted backward to 90° relative to the vertical line; Figure 6 for Figure 1 Side view of the surface cleaning equipment shown Figure 2 The portable vacuum cleaner was detached from the upright body. Figure 7 for Figure 6 The image shows a side sectional view of a portable vacuum cleaner; the direction of the dashed arrow indicates the flow direction of the suction flow generated when the portable vacuum cleaner is used independently. Figure 8 for Figure 6 The image shows a front sectional view of a portable vacuum cleaner; the dashed arrows indicate the direction of the surface suction flow from the suction motor out of the portable vacuum cleaner. Figure 9 The valve mechanism is provided as a second embodiment of the present invention; Figure 10 for Figure 1 A three-dimensional structural diagram of the cleaning base of the surface cleaning equipment shown. Figure 11 for Figure 10 A three-dimensional structural diagram of some components of the cleaning base shown; Figure 12 for Figure 10 The diagram shows a three-dimensional structure of the drive mechanism of the cleaning base.

[0021] The image is labeled as follows: 100. Surface cleaning equipment; 1. Cleaning base; 11. Base body; 111. Side wall; 112. Hinge seat; 113. Rotatable joint; 12. Roller cavity; 13. First brush roller; 14. Second brush roller; 15. Fluid distributor; 16. Side brush; 17. Suction nozzle; 18. Scraper; 191. Drive motor; 192. Gearbox; 193. Gearbox output shaft; 194. First drive head; 195. Second drive head; 196. First transmission belt; 197. First transmission gear; 198. Second transmission belt; 199. Second transmission gear; 1910. Third transmission gear; 1911. Fourth transmission gear; 2. Upright body; 21. Handle section; 211. Handle; 22. Main body; 221. Mounting base; 222. Trigger element; 223. Closing mechanism; 23. Connecting end; 3. Portable vacuum cleaner; 31. Housing; 32. Handle; 33. Air inlet pipe; 331. Air inlet; 34. Gas-solid separator; 35. Suction motor; 36. Air inlet bypass; 361. Bypass port; 37. Rechargeable battery; 38. Dust collection chamber; 39. Filter chamber; 310. First filter; 311. Valve; 312. Exhaust port; 313. Dust cup; 314. Control components; 4. Cleaning solution tank; 5. Wastewater recovery tank; 51. Wastewater chamber; 52. Inflow pipe; 53. Outflow channel; 54. Baffle plate; 55. Second filter; R1, first direction of rotation; R2, second direction of rotation; Y, axis. Detailed Implementation

[0022] To explain in detail the technical content, structural features, achieved objectives and effects of this application, the technical solutions in the embodiments of this application will be described below with reference to the accompanying drawings.

[0023] In the following description, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0024] In this application, spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side” (e.g., as in a “sidewall”) are used to describe the relationship between one element and another element as shown in the accompanying drawings. Spatial relative terms are intended to include different orientations of the device in use, operation, and / or manufacture other than those depicted in the drawings. For example, if the device in the drawings is flipped, an element described as “below” or “under” another element or feature would then be positioned “above” said other element or feature. Thus, the exemplary term “below” can include both above and below orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0025] Figure 1 The present invention illustrates a surface cleaning device 100, which is movable along a surface to be cleaned and performs cleaning operations. The surface cleaning device 100 includes a cleaning base 1 movable along the surface to be cleaned, an upright body 2 rotatably connected to the cleaning base 1, a portable vacuum cleaner 3 detachably mounted on the upper part of the upright body 2, a cleaning fluid tank 4 capable of storing and supplying cleaning fluid, and a waste fluid recovery tank 5 capable of receiving and storing waste fluid.

[0026] See Figure 4 and Figure 10 The cleaning base 1 includes a base 11 forming the outer contour of the main body, a pair of roller cavities 12 defined by the base 11 and arranged front to back, a first brush roller 13 and a second brush roller 14 arranged front to back and rotatably disposed at the pair of roller cavities 12, a pair of fluid distributors 15 disposed inside the base 11, and a drive mechanism for driving the first and second brush rollers to rotate simultaneously.

[0027] Each roller cavity 12 has a lower opening (not shown in the figure) facing the surface to be cleaned. The first and second brush rollers each have a portion of their outer peripheral surface extending through the lower opening of the corresponding roller cavity 12 to contact the surface to be cleaned. A pair of fluid distributors 15 are respectively adjacent to a pair of roller cavities 12 and are configured to receive cleaning fluid from the fluid supply path (see below) and distribute the cleaning fluid onto the outer surface of the adjacent first brush roller 13 or second brush roller 14. Furthermore, the cleaning base 1 is also provided with a pair of side brushes 16, respectively drivenly connected to the first and second brush rollers and arranged coaxially. Each side brush 16 is configured to protrude at least partially outward from the base 11 in the radial and / or axial direction to facilitate cleaning corners, table corners, etc.

[0028] The cleaning base 1 also includes a pair of suction nozzles 17 located internally and adjacent to a pair of roller cavities 12, each suction nozzle 17 being in fluid communication with the corresponding roller cavity 12. The suction nozzles 17 form inlets to a fluid input path (see below) for the suction flow to carry contaminants from the surface to be cleaned into the fluid input path. Furthermore, the cleaning base 1 is also provided with scraper blades 18 located below a pair of fluid distributors 15, each scraper blade 18 located above the pair of suction nozzles 17 and configured to contact the outer surface of the first brush roller 13 or the second brush roller 14 to scrape off contaminants carried by the corresponding brush roller.

[0029] Combination Figure 11-12 The base 11 has a side wall 111. The drive mechanism includes a drive motor 191 as a power source, a reduction gearbox 192 mechanically coupled to the drive motor 191, a first drive head 194 and a second drive head 195 rotatably mounted on the side wall 111 and arranged front to back, and a first transmission assembly and a second transmission assembly. One end of the first and second brush rollers is fixedly mounted on the first and second drive heads, respectively, so that the first and second drive heads can drive the first and second brush rollers to rotate.

[0030] The drive motor 191, the gearbox 192, and the side wall 111 are fixedly connected in sequence. The drive motor 191 is located inside the base 11 and arranged between the first and second brush rollers to reduce the overall volume of the cleaning base 1. The gearbox 192 includes a housing (not shown in the figure) fixedly mounted on the side wall 111 and a gearbox output shaft 193 protruding from the housing and extending into the side wall 111. The gearbox output shaft 193 is configured to simultaneously drive the first and second drive heads to drive the first and second brush rollers to rotate simultaneously under the drive of the drive motor 191.

[0031] Specifically, the first transmission assembly is arranged inside the side wall 111, which is used to realize the transmission connection between the gearbox output shaft 193 and the first drive head 194. The first transmission assembly includes a first transmission belt 196 and a first transmission gear 197. The first transmission belt 196 is sleeved on the outside of the first transmission gear 197 and the gearbox output shaft 193. The first transmission gear 197 is coaxially arranged with the first drive head 194 through a coupling, so as to drive the first drive head 194 and the first brush roller 13 to rotate in a first rotation direction R1.

[0032] The second transmission assembly is arranged inside the side wall 111, and is used to realize the transmission connection between the gearbox output shaft 193 and the second drive head 195. The second transmission assembly includes a second transmission gear 199 and a third transmission gear 1910 arranged coaxially, a fourth transmission gear 1911 meshing with the third transmission gear 1910, and a second transmission belt 198 sleeved on the outside of the gearbox output shaft 193 and the second transmission gear 199. The fourth transmission gear 1911 is coaxially arranged with the second drive head 195 through a coupling, so as to drive the second drive head 195 and the second brush roller 14 to rotate in a second rotation direction R2 opposite to the first rotation direction R1.

[0033] In actual use of the surface cleaning device 100, the cleaning environments of the first brush roller 13 located at the front and the second brush roller 14 located at the rear are different. Compared to the second brush roller 14, the first brush roller 13 generally supplies more cleaning fluid, faces surfaces with higher levels of dirt, and generates more wastewater. Therefore, considering factors such as energy utilization and cleaning capacity, the first and second brush rollers are generally given different rotational speeds to adapt to their respective cleaning environments. Understandably, the surface cleaning device 100 provided in this application can adjust the rotational speeds of the first and second brush rollers by setting factors such as the radius length of each transmission gear on the cleaning base 1 and the transmission ratio between the third and fourth transmission gears. In this embodiment, the rotational speed of the second brush roller 14 is lower than that of the first brush roller 13.

[0034] Continue reading Figure 1 The upright body 2 extends along a longitudinal direction and includes a handle portion 21 at the top, a connecting end 23 at the bottom, and a main body portion 22 located between the handle portion 21 and the connecting end 23. The handle portion 21 is provided with a handle 211 for the user to hold and a plurality of first control keys (not shown in the figure) located on the handle 211. The first control keys are signal connected to each controllable component of the surface cleaning device 100 so that the user can control the operation of the surface cleaning device 100.

[0035] Combination Figure 10 The base 1 of the cleaning base 1 also has a hinged seat 112 at the top and a rotatable connector 113 hinged to the hinged seat 112. The rotatable connector 113 is located on the fluid input path and is in fluid communication with each suction nozzle 17. The connecting end 23 is fixedly connected to the rotatable connector 113 of the cleaning base 1. The rotatable connector 113 provides a rotation range of at least 90°, so that the user can adjust the angle between the upright body 2 and the cleaning base 1 according to actual needs. For example, the upright body 2 can be adjusted to be perpendicular to the cleaning base 1 (e.g., ...). Figure 1), to facilitate the storage of the surface cleaning equipment 100; adjust the upright body 2 to tilt backward relative to the vertical line so that the user can hold the handle 211 and push the cleaning base 1 to move it on the surface to be cleaned; or adjust the upright body 2 to be at 90° with the vertical line (e.g. Figure 5 This allows for the cleaning of surfaces in height-restricted areas such as under beds and sofas.

[0036] The cleaning fluid tank 4, used for storing and supplying cleaning fluid, is detachably mounted on the lower front side of the main body 22 for easy replenishment by the user. The surface cleaning device 100 internally defines a supply path (not shown) for the cleaning fluid to flow from the cleaning fluid tank 4 to a pair of fluid distributors 15. A selectively activating supply pump (not shown) is provided on this supply path to selectively deliver the cleaning fluid from the cleaning fluid tank 4 to the pair of fluid distributors 15 and to block fluid flow in the supply path.

[0037] See Figure 6-8 The portable vacuum cleaner 3 is configured to be detachable from the upright body 2 and used independently as a dry vacuum cleaner. The portable vacuum cleaner 3 includes a housing 31, a handle 32 integrally formed with the housing 31 for carrying the portable vacuum cleaner 3, an air inlet pipe 33 defining a central axis Y, an air-solid separator 34, a suction motor 35 for generating a suction flow, a rechargeable battery 37 disposed on the top, and multiple exhaust ports 312 arranged in an array on the side of the housing 31 for the suction flow to exit the portable vacuum cleaner 3. The handle 32 is located on the front of the housing 31 and has several second control buttons (not shown) for the user to control the portable vacuum cleaner 3. When the portable vacuum cleaner 3 is mounted on the upright body 2, the handle 32 protrudes forward to facilitate the user's attachment and detachment of the portable vacuum cleaner 3.

[0038] The housing 31 includes a dust cup 313 and an air intake bypass 36 disposed on one side of the dust cup 313. The dust cup 313 is configured to be detachable from the portable vacuum cleaner 3 for the user to empty the debris inside. The dust cup 313 defines a dust collection chamber 38, and an air intake pipe 33 is integrally formed with the dust cup 313 and extends partially into the dust collection chamber 38. The air intake pipe 33 has a first end and a second end that are spaced apart from each other. The first end protrudes outward relative to the dust cup 313 and forms an air inlet 331 for suction into the portable vacuum cleaner 3. A gas-solid separator 34 is disposed in the dust collection chamber 38, and the second end of the air intake pipe 33 is fixedly disposed on the gas-solid separator 34 and is in fluid communication with the upper part of the dust collection chamber 38.

[0039] The gas-solid separator 34 has a rotationally symmetrical structure and is arranged coaxially with the inlet pipe 33. The gas-solid separator 34 includes a connecting portion (not shown) fixed to the inner wall of the housing 31 away from the inlet pipe 33, a skirt (not shown) near the inlet pipe 33, a filter portion (not shown) located between the connecting portion and the skirt, and a filter chamber 39 confined within itself. The skirt extends outward relative to the filter portion and divides the dust collection chamber 38 into an upper chamber and a lower chamber that are in fluid communication.

[0040] The filter section has a cylindrical structure, and the gas-solid separator 34 has multiple filter holes (not shown in the figure) arranged in an array in the filter section. The filter chamber 39 is in fluid communication with the suction motor 35. The air inlet pipe 33, dust collection chamber 38, filter holes, filter chamber 39 and suction motor 35 are sequentially in fluid communication and form a first vacuum path for the suction flow to flow from the air inlet 331 to the suction motor 35. Furthermore, a first filter 310 located on the first vacuum path (i.e., located between the dust collection chamber 38 and the suction motor 35) is also provided in the filter chamber 39 to further adsorb the small debris that passes through the filter holes.

[0041] The intake bypass 36 is independent of the dust collection chamber 38 and includes a first section 362 arranged parallel to the dust cup 313 and a second section 363 arranged perpendicular to the first section. The second section 363 is located between the suction motor 35 and the first filter 310. The first section 362 forms a bypass port 361 exposed from one side of the dust cup 313. The intake bypass 36 is also equipped with a valve mechanism. The portable vacuum cleaner 3 forms a second vacuum path for suction flow to flow from the bypass port 361 to the suction motor 35. The valve mechanism has a closed state that can prevent fluid from flowing along the second vacuum path and an open state that allows fluid to flow along the second vacuum path, and is configured to switch back and forth between the closed and open states.

[0042] Specifically, the valve mechanism provided in this embodiment includes a valve 311 located at the bypass port 361 and an elastic reset member (such as a torsion spring, not shown in the figure) disposed at the valve 311. The valve 311 is adapted to the bypass port 361, and the valve 311 can close the bypass port 361 (i.e., the valve mechanism is in the closed state) and open the bypass port 361 (i.e., the valve mechanism is in the open state); the elastic reset member applies a force to the valve 311 to automatically switch from the open position to the closed position, so that when the portable vacuum cleaner 3 is used independently, the valve mechanism can automatically switch and remain in the closed state under the action of the elastic reset member, thereby continuously closing the bypass port 361.

[0043] Figure 9A second embodiment of the valve mechanism is provided, which replaces the resilient reset member with an operating component 314, which is movably disposed on the housing 31' and configured to be operated by a user. The operating component 314 is drivenly connected to the valve 311, so that the user can selectively switch the valve 311' to a closed position and an open position via the operating component 314.

[0044] The suction motor 35 is located in the middle of the inner side of the housing 31. Multiple exhaust ports 312, arranged in an array, are also provided on the side of the housing 31 for the suction flow to exit the portable vacuum cleaner 3. The multiple exhaust ports 312 are located below the suction motor 35 to maximize the exhaust path and thus reduce exhaust noise. When the portable vacuum cleaner 3 is mounted on the upright body 2, the exhaust ports 312 are concealed (i.e., the exhaust ports 312 are located inside the surface cleaning device 100 and surrounded by the upright body 2) to further reduce exhaust noise.

[0045] The rechargeable battery 37 can be used as a power source for the portable vacuum cleaner 3 or the surface cleaning device 100. Specifically, when the portable vacuum cleaner 3 is mounted on the upright body 2, the rechargeable battery 37 is electrically connected to each power-consuming component of the surface cleaning device 100 to provide power to the surface cleaning device 100; when the portable vacuum cleaner 3 is detached from the upright body 2, the rechargeable battery 37 is only electrically connected to each power-consuming component on the portable vacuum cleaner 3 to provide power to the portable vacuum cleaner 3.

[0046] When the portable vacuum cleaner 3 is used independently as a dry vacuum cleaner, the bypass port 361 is closed by the valve 311, and the suction motor 35 starts to form a suction flow to adsorb debris on the cleaning surface. The suction flow carrying debris flows in from the air inlet 331 and flows along the first vacuum path. The gas-solid separator 34 blocks the debris in the dust collection chamber 38 to complete the gas-solid separation. The blocked debris falls into the lower chamber under its own weight and other factors. The skirt of the gas-solid separator 34 can prevent debris in the lower chamber from entering the upper chamber when the portable vacuum cleaner 3 is tilted or inverted. Subsequently, the suction flow freed from debris reaches the suction motor 35 through the filter chamber 39 and finally leaves the portable vacuum cleaner 3 through multiple exhaust ports 312.

[0047] See Figure 2-3The main body 22 of the upright unit 2 is provided with a mounting base 221 for mounting a portable vacuum cleaner 3. The mounting base 221 is provided with a trigger 222 and a groove (not shown in the figure) corresponding to the bypass port 361 and the air inlet 331, respectively. The trigger 222 has a connection port (not shown in the figure) for the suction flow to exit the upright unit 2. A closing mechanism 223 is arranged in the groove to close the air inlet 331 when the portable vacuum cleaner 3 is mounted on the upright unit 2. The surface cleaning device 100 defines a fluid input path for the suction flow from each suction nozzle 17 to the connection port. When the portable vacuum cleaner 3 is mounted on the upright unit 2, the mounting base 221 contacts the portable vacuum cleaner 3; the trigger 222 opens the valve 311 at the bypass port 361 to connect the fluid input path and the second vacuum path; part of the air inlet pipe 33 is received in the groove and the air inlet is closed by the closing mechanism 233, thereby sealing the first vacuum path. Specifically, the trigger is a boss that can open the valve 311, and the closing mechanism 233 is a sealing ring adapted to the air inlet 331. In other embodiments, the closing mechanism may also be implemented with other structures, such as a stepped mechanism that can block the air inlet or a groove that is configured to fit the outer contour of the air inlet (or the outer contour of the housing around the air inlet).

[0048] The wastewater recovery tank 5 is detachably installed at the lower part of the upright body 2 and forms part of the fluid input path to receive and store wastewater carried by the suction flow. Specifically, the wastewater recovery tank 5 defines a wastewater chamber 51 for receiving and containing wastewater, an inlet pipe 52 for fluid to enter the wastewater chamber 51, an outlet channel 53 for fluid to flow out of the wastewater recovery tank 5 and located at the top, and a baffle plate 54 located above the inlet pipe 52. The inlet pipe 52, the wastewater chamber 51, and the outlet channel 53 flow sequentially and form part of the fluid input path. The baffle plate 54 is located in the fluid input path and adjacent to the downstream of the inlet pipe 52. When the suction flow carrying wastewater enters the wastewater chamber 51 from the inlet pipe 52, it expands and depressurizes. Most of the wastewater leaves the suction flow and is stored in the wastewater chamber 51. A small portion of the wastewater is carried by the suction flow to the baffle plate 54, where liquid-gas separation is completed due to inertia. Subsequently, the suction flow exits the wastewater recovery tank 5 via the outflow channel 53 (still carrying a small amount of water vapor). Furthermore, the wastewater recovery tank 5 is equipped with a second filter 55, which is located in the fluid input path to further absorb the wastewater and dirt carried by the suction flow.

[0049] The working principle of the surface cleaning device 100 is explained below: When the surface cleaning device 100 performs cleaning operations, the portable vacuum cleaner 3 is installed on the upright body 2, the liquid supply pump is started, and the cleaning liquid in the cleaning liquid tank 4 flows along the liquid supply path to a pair of fluid distributors 15 and wets the corresponding first brush roller 13 or second brush roller 14; the first and second brush rollers use the cleaning liquid to clean the surface to be cleaned; the suction motor 35 is started and forms a suction flow, which carries the dirt on the surface to be cleaned into the surface cleaning device 100 from a pair of suction nozzles 35, and then passes through the fluid input path and the second vacuum path to reach the exhaust port 312, and then leaves the surface cleaning device 100. During this process, the dirt is stored in the dirt recovery tank 5.

[0050] Understandably, when the surface cleaning device 100 is working, its suction flow carrying a small amount of water vapor can bypass the dust collection chamber 38 and the gas-solid separator 34 via the second vacuum path, so as to avoid the water vapor from combining with the debris stored in the dust collection chamber 38, making the debris sticky and blocking the first vacuum path.

[0051] The above embodiments are only for illustrating the technical concept and features of this application, and are intended to enable those skilled in the art to understand the content of this application and implement it accordingly. They should not be construed as limiting the scope of protection of this application. All equivalent changes or modifications made in accordance with the spirit of this application should be included within the scope of protection of this application.

Claims

1. A surface cleaning device, characterized in that, The surface cleaning equipment includes: A cleaning base includes at least one roller cavity, a plurality of brush rollers rotatably arranged in the at least one roller cavity, and a plurality of suction nozzles located inside the cleaning base and in fluid communication with the at least one roller cavity; A portable vacuum cleaner includes: a housing defining a dust collection chamber; a gas-solid separator disposed within the dust collection chamber; an air inlet pipe having an air inlet and in fluid communication with the dust collection chamber; an air intake bypass independent of the dust collection chamber and having a bypass port located on the housing; a suction motor disposed inside the housing, the portable vacuum cleaner forming a first vacuum path from the air inlet to the suction motor and a second vacuum path from the bypass port to the suction motor, the gas-solid separator being located on the first vacuum path; a valve mechanism disposed at the air intake bypass and including a valve disposed in the air intake bypass, the valve mechanism having an operating state between a closed state that prevents fluid from flowing along the second vacuum path and an open state that allows fluid to flow along the second vacuum path; and a rechargeable battery electrically connected to the suction motor. An upright body is rotatably connected to the cleaning base. The upright body has a mounting base for the portable vacuum cleaner to be detachably installed. The mounting base has a pair of interfaces. When the portable vacuum cleaner is installed on the mounting base, the interfaces are in fluid communication with the second vacuum path. A cleaning fluid tank, detachably connected to the upright body or the cleaning base, and capable of supplying cleaning fluid to the plurality of brush rollers; and A wastewater recovery tank is used to intercept and store wastewater. The wastewater recovery tank is detachably connected to the upright body. The plurality of suction nozzles, the wastewater recovery tank, and the docking port are sequentially fluidly connected to form a fluid input path.

2. The surface cleaning equipment according to claim 1, characterized in that, The valve mechanism includes a control component located on the housing and operable by a user; the control component is driven by the valve to control the valve mechanism to switch between the closed state and the open state.

3. The surface cleaning equipment according to claim 1, characterized in that, The valve mechanism includes a resilient reset member; the resilient reset member is driven by the valve so that the valve mechanism can automatically switch from the open state to the closed state.

4. The surface cleaning equipment according to claim 3, characterized in that, The mounting base is equipped with a trigger and a docking interface adapted to the valve mechanism; when the portable vacuum cleaner is installed on the mounting base, the trigger causes the valve mechanism to switch from the closed state to the open state and the docking interface is connected to the bypass port.

5. The surface cleaning equipment according to claim 4, characterized in that, The trigger includes a protrusion, and the interface is integrated on the top of the protrusion.

6. The surface cleaning equipment according to claim 5, characterized in that, The mounting base has a groove adapted to the air inlet, the groove receiving at least a portion of the air inlet pipe and sealing the air inlet when the portable vacuum cleaner is mounted on the mounting base.

7. The surface cleaning equipment according to claim 1, characterized in that, The portable vacuum cleaner also includes multiple exhaust ports located on the side of the housing and fluidly communicating with the suction motor and the outside. The multiple exhaust ports are concealed when the portable vacuum cleaner is mounted on the mounting base.

8. The surface cleaning equipment according to claim 1, characterized in that, The portable vacuum cleaner includes a first filter located in the first vacuum path and between the dust collection chamber and the suction motor.

9. The surface cleaning equipment according to claim 1, characterized in that, A second filter is installed on the top of the wastewater recovery tank, and the second filter is located on the fluid input path.

10. The surface cleaning device according to claim 1, characterized in that, The housing includes a separable dust cup, the dust collection chamber is located inside the dust cup, and the air inlet is located at the bottom of the dust cup.

11. The surface cleaning equipment according to claim 10, characterized in that, The bypass port is located on one side of the dust cup.

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