Cleaning base

Abstract

This application discloses a cleaning base capable of moving along a surface to be cleaned. The cleaning base includes a seat having a front and a rear portion, a wet cleaning roller disposed at the front portion and rotatable about its own axis, a dry wiping roller disposed at the rear portion and rotatable about its own axis, a liquid distributor for distributing cleaning liquid to the wet cleaning roller, and a dryer configured for drying the dry wiping roller. The rear portion includes a rear cover plate circumferentially covering part of the dry wiping roller. The rear cover plate includes a rear sidewall located behind the dry wiping roller, the bottom edge of which is lower than the rotation axis of the dry wiping roller. The cleaning base of this application, by means of the combined action of the dry wiping roller and the dryer, can effectively help reduce moisture residue after use, thereby increasing the user's willingness to use the product. Moreover, the rear sidewall reduces heat leakage from the dryer, thereby improving the energy efficiency of the entire surface cleaning machine.

Description

Technical Field

[0001] This application relates to the field of surface cleaning technology, and in particular to a cleaning base that can move on a surface to be cleaned. Background Technology

[0002] Surface cleaning equipment that uses cleaning liquids, such as water, for cleaning operations has been widely used in daily life. For example, wet floor cleaning equipment can use water or a water / detergent mixture to scrub floors. These wet floor cleaning equipment are equipped with a recycling container for used cleaning liquid. The used cleaning liquid, which has become dirty liquid, along with debris on the floor, can be collected into the recycling container by a device such as a suction motor.

[0003] In the process of recovering sewage and debris, the aforementioned wet floor cleaning equipment often leaves some residual moisture on the cleaned floor because some liquid cannot be completely recovered. After using the wet floor cleaning equipment, in order to avoid secondary pollution caused by users stepping on this residual moisture, users have to wait for a period of time before entering the space where the floor is located, which will cause inconvenience to users.

[0004] In existing technologies, to reduce the amount of water remaining on the ground, some wet floor cleaning equipment allows only a very low flow rate of cleaning liquid to flow onto the ground per unit time. While this avoids leaving too much water on the cleaned floor, the low flow rate also means a reduced amount of debris carried by the liquid, which may weaken the cleaning ability of the wet floor cleaning equipment. Some wet floor cleaning machines use a hot air system installed on the equipment to dry the floor while using water or a water / detergent mixture to scrub it. However, because the wiping time is extremely short, even if the hot air system is controlled to the maximum operating power of the wet floor cleaning equipment, it is difficult to dry the floor in such a short time. Furthermore, the use of the hot air system results in extremely high operating noise from the wet floor cleaning equipment.

[0005] Therefore, the various configurations in existing wet floor cleaning equipment still cannot effectively solve the problem of residual moisture on the floor. Summary of the Invention

[0006] In order to address the problem of moisture residue remaining on the surface to be cleaned after cleaning in the prior art, the purpose of this application is to provide a cleaning base that can effectively remove residual moisture from the surface to be cleaned during the cleaning process.

[0007] To achieve the above objectives, this application provides the following technical solution: a cleaning base capable of moving along a surface to be cleaned. The cleaning base includes a seat having a front and a rear portion, a wet cleaning roller disposed at the front portion and rotatable about its own axis, a dry wiping roller disposed at the rear portion and rotatable about its own axis, a liquid distributor for distributing cleaning liquid to the wet cleaning roller, and a dryer configured for drying the dry wiping roller. The wet cleaning roller includes a first roller body and a first cleaning element covering the outer peripheral surface of the first roller body and capable of being wetted by cleaning liquid. The dry wiping roller includes a second roller body and a second cleaning element covering the outer peripheral surface of the second roller body and capable of absorbing the cleaning liquid. The rear portion includes a rear cover plate circumferentially covering a portion of the periphery of the dry wiping roller. The rear cover plate includes a rear sidewall located behind the dry wiping roller, the bottom edge of which is lower than the rotation axis of the dry wiping roller.

[0008] In the above technical solution, preferably, the dryer is arranged on the inner side of the rear cover plate.

[0009] In the above technical solution, preferably, a heat insulation material is provided between the dryer and the rear cover plate.

[0010] In the above technical solution, preferably, the lower part of the rear sidewall has an arc-shaped segment, and the bottom edge is located on the arc-shaped segment.

[0011] In the above technical solution, preferably, the inner surface of the arc-shaped segment contacts or is adjacent to the second cleaning element.

[0012] In the above technical solution, preferably, the dryer includes a heating element and a heat-conducting component that is in thermal contact with the heating element. The heat-conducting component has an arc-shaped hot surface that circumferentially covers a portion of the dry wiping roller and contacts the second cleaning element.

[0013] In the above technical solution, preferably, a recess is provided on the inner wall surface of the rear cover plate, and the dryer is at least partially located in the recess.

[0014] In the above technical solution, preferably, the front part has a front agitation chamber, the wet cleaning roller is arranged in the front agitation chamber, and the cleaning base further includes a suction channel, the suction channel being in fluid communication with the front agitation chamber at least.

[0015] In the above technical solution, preferably, the rear part has a rear agitation chamber, the dry wiping roller is arranged in the rear agitation chamber, and the rear agitation chamber is in fluid communication with the suction channel through a narrow channel.

[0016] In the above technical solution, preferably, the diameter of the first roller is larger than the diameter of the second roller.

[0017] Compared with the prior art, this application achieves the following beneficial effects: by means of the combined action of the dry wiping roller and the dryer, it can effectively help reduce the moisture residue after use of the cleaning base, thereby increasing the user's willingness to use the product; moreover, the rear sidewall reduces the heat leakage of the dryer, thereby improving the energy utilization rate of the entire surface cleaning machine. Attached Figure Description

[0018] Figure 1 A perspective view of a surface cleaning machine provided in an embodiment of this application;

[0019] Figure 2 A perspective view of a cleaning base from a low angle, provided as an embodiment of this application;

[0020] Figure 3 for Figure 2 A bottom view of the cleaning base;

[0021] Figure 4 for Figure 2 A cross-sectional view of the cleaning base;

[0022] Figure 5 for Figure 4 An enlarged view of the front part of the cleaning base;

[0023] Figure 6 for Figure 4 An enlarged view of the rear part of the cleaning base;

[0024] Figure 7 for Figure 6 A schematic diagram of removing the dry wiping roller from the cleaning base;

[0025] Figure 8 This is a cross-sectional schematic diagram of another cleaning base provided in an embodiment of this application.

[0026] The components are: 10. Surface cleaning machine; 1. Cleaning base; 2. Handle body; 3. Rotary joint; 11. Base; 111. Front; 112. Rear; 113. Top; 114. Bottom; 12. Front agitation chamber; 13. Rear agitation chamber; 14. Suction nozzle; 15. Wet cleaning roller; 16. Liquid distributor; 161. Scraper roller assembly; 18. Dry wiping roller; 19. Dryer; 1111. Front cover plate; 121. First lower opening; 122. Front opening; 151. First roller body; 152. First cleaning element; 1121. Rear cover plate; 131. Second lower opening; 181. Second roller body; 182. Second cleaning element Components; 11211, Top wall; 11212, Rear side wall; 11213, Arc-shaped section; 11214, Bottom edge; 11215, Recess; 1141, Front end; 1142, Rear end; 191, Heating element; 192, Heat-conducting component; 1921, Hot surface; 193, Barrier component; 21, Handle; 22, Body; 211, Operating section; 32, Water tank; 41, Recycle bin; 42, Suction motor; 51, Rechargeable battery pack; 8, Cleaning base; 82, Front agitation chamber; 83, Rear agitation chamber; 85, Wet cleaning roller; 88, Dry wiping roller; 89, Dryer; 87, Suction channel; 871, Narrow channel. Detailed Implementation

[0027] The surface cleaning machine of this application is configured to contact the surface to be cleaned using a cleaning base; the surface to be cleaned is typically a hard surface, such as a floor or tile surface. The cleaning base scrubs the surface with a cleaning liquid, while simultaneously thoroughly recovering the used cleaning liquid and any debris present on the surface. This surface cleaning machine solution can be applied to various types of cleaning equipment.

[0028] The terms “up” and “down” mentioned below are oriented relative to the surface cleaning base on the surface to be cleaned, and the terms “front” and “back” are oriented relative to the direction in which the operator stands on the surface to be cleaned and pushes the surface cleaning machine (i.e., the pushing direction from back to front).

[0029] Figure 1 This application illustrates a surface cleaning machine 10; the surface cleaning machine 10 is an upright machine comprising a cleaning base 1 and a handle body portion 2 located on the upper side of the cleaning base 1. The lower part of the handle body portion 2 is pivotally connected to the cleaning base 1 via a swivel joint 3. The handle body portion 2 has a storage position that is upright relative to the cleaning base 1 for easy storage and a working position that is tilted backward relative to the cleaning base 1 for easy pushing of the surface cleaning machine 10 by the user.

[0030] like Figure 1-3As shown, the cleaning base 1 has a seat 11, which includes a front part 111, a rear part 112, a top part 113, and a bottom part 114.

[0031] like Figure 2-7 As shown, a front agitation chamber 12 is located at the front 111, and a rear agitation chamber 13 is located at the rear 112. A suction nozzle 14 is disposed adjacent to the front agitation chamber 12. The front agitation chamber 12 contains a rotatable wet cleaning roller 15, a liquid distributor 16 partially extending into the front agitation chamber 12, and a scraper roller member 161. The rear agitation chamber 13 contains a dry wiping roller 18 and a dryer 19. This arrangement separates the wet cleaning roller 15 and the dry wiping roller 18 in the front-to-back direction, allowing the cleaning base 1 to be supported on the surface to be cleaned by the wet cleaning roller 15 and the dry wiping roller 18. In other words, within the same working time, the cleaning base 1 can simultaneously clean the surface using both the wet cleaning roller 15 and the dry wiping roller 18.

[0032] The front portion 111 includes a front cover plate 1111 that covers the upper side of the wet cleaning roller 15. The lower portion of the front agitation chamber 12 has a first lower opening 121, and the front portion of the front agitation chamber 12 has a front opening 122, which communicates with the first lower opening 121. The lower portion and the front portion of the wet cleaning roller 15 protrude from the first lower opening 121 and the front opening 122, respectively, to contact the surface to be cleaned.

[0033] The wet cleaning roller 15 includes a first roller body 151 defining a rotation axis X1 extending in a horizontal direction and a first cleaning element 152 covering the outer peripheral surface of the roller body 151. The first cleaning element 152 is configured to be wetted by a cleaning liquid, such as water. The roller diameter D1 of the first roller body 151 is preferably 50-60 mm. In this example, the first cleaning element 152 is a fiber, for example, the fiber length L1 of the first cleaning element 152 is 5-10 mm, which is the same as the length L1 of the first roller brush. In other embodiments, the first cleaning element may also be a sponge, fabric, or other types.

[0034] The cleaning base 1 is also equipped with a first motor (not shown in the figure) that is connected to the wet cleaning roller 15 to drive the wet cleaning roller 15 to rotate about the rotation axis X1.

[0035] The liquid dispenser 16 faces the wet cleaning roller 15 and is configured to dispense cleaning liquid from the liquid supply system (not shown) onto the wet cleaning roller 15.

[0036] The suction nozzle 14 faces the forward agitation chamber 12. The suction nozzle 14 is in fluid communication with a suction channel 17; the suction channel 17 may be partially defined by the base 11 or entirely by a pipe arranged within the base 11. The suction channel 17 guides fluids such as sewage, debris, and air drawn in through the suction nozzle 14.

[0037] The scraper assembly 161 is positioned within the front agitation chamber 12 closer to the suction nozzle 14 than the liquid distributor 16; in terms of the rotation direction of the wet cleaning roller 15, the scraper assembly 161 is downstream of the suction nozzle 14, and the liquid distributor 16 is downstream of the scraper assembly 161. The scraper assembly 161 is typically a rigid scraper component that abuts against the first cleaning element 152 of the wet cleaning roller 15 to remove liquid and debris from the first cleaning element 152 of the wet cleaning roller 15.

[0038] The rear portion 112 includes a rear cover plate 1121 that circumferentially covers the periphery of a portion of the dry wiping roller 18. The lower portion of the rear agitation chamber 13 has a second lower opening 131. The lower portion of the dry wiping roller 18 protrudes from the second lower opening 131 to contact the surface to be cleaned.

[0039] The dry wiping roller 18 includes a second roller body 181 defining a rotation axis X2 extending in a horizontal direction and a second cleaning element 182 covering the outer peripheral surface of the roller body 181. The second cleaning element 182 is configured to absorb cleaning liquids such as water. The roller diameter D2 of the second roller body 181 is preferably 35-50 mm. In this example, the second cleaning element 182 is preferably made of fiber fibers, for example, the fiber length L2 of the second cleaning element 182 is 5-15 mm. In other embodiments, the second cleaning element may also be a sponge, fabric, or other types. In some preferred embodiments, to increase the liquid absorption performance, the fiber length L2 of the second cleaning element 182 is greater than the fiber length L1 of the first cleaning element 152.

[0040] The cleaning base 1 is also equipped with a second motor (not shown in the figure) that is drively connected to the dry wiping roller 18 to drive the dry wiping roller 18 to rotate about the rotation axis X2. The first motor and the second motor can be built-in motors inside the respective rollers, or external motors arranged outside the respective rollers. In other feasible embodiments, the first motor and the second motor can also be replaced by a single motor, that is, the dry wiping roller 18 and the wet cleaning roller 15 can be driven to rotate simultaneously by the same motor.

[0041] In this example, the diameter D2 of the second roller 181 is preferably smaller than the diameter D1 of the first roller 151. During the same working process, the wet cleaning roller 15 is driven to rotate at a first angular velocity, and the dry wiping roller 18 is driven to rotate at a second angular velocity greater than the first angular velocity, for example: the first angular velocity is greater than or equal to 6.6π radians per second, and the second angular velocity is greater than or equal to 33π radians per second. This arrangement ensures that the rotation frequency of the dry wiping roller 18 is as high as possible compared to the rotation frequency of the wet cleaning roller 15 during the same working process, thereby allowing the dry wiping roller 18 to contact the surface to be cleaned more frequently, thus absorbing residual liquid on the surface. In some preferred embodiments, the second angular velocity can be set to more than twice the first angular velocity.

[0042] The rear cover plate 1121 includes a rear top wall 11211 and a rear side wall 11212. The rear side wall 11212 defines the rear portion of the rear agitation chamber 13. The rear side wall 11212 extends downward from the rear edge of the rear top wall 11211 and extends below the rotation axis X2 of the dry wiping roller 18. The lower portion of the rear side wall 11212 has an arcuate segment 11213. The bottom edge 11214 of the arcuate segment 11213 is located below the rotation axis X2, and the inner surface of the arcuate segment 11213 is adjacent to the dry wiping roller 18.

[0043] The bottom 114 includes a front end portion 1141 and a rear end portion 1142; the front end portion 1141 defines the rear boundary of the first lower opening 121, and the rear end portion 1142 defines the front boundary of the second lower opening 131. In this example, both the front end portion 1141 and the rear end portion 1142 include a flexible scraper.

[0044] The dryer 19 is located inside the rear agitation chamber 13 and outside the dry wiping roller 18. The dryer 19 is configured to dry the second cleaning element 182 of the dry wiping roller 18. A recess 11215 is provided on the inner side of the top wall 11211, and the dryer 19 is partially housed in the recess 11215.

[0045] In this example, the dryer 19 includes a heating element 191 capable of converting electrical energy into heat and a heat-conducting component 192 thermally connected to the heating element 191. The dryer 19 generates heat through the heating element 191, and then transfers the heat to the external dry wiping roller 18 via the heat-conducting component 192. The heat-conducting component 192 is preferably a metal element, and the heating element 191 is preferably embedded within the heat-conducting component 192.

[0046] The heat-conducting component 192 includes an arc-shaped hot surface 1921 that extends circumferentially around the rotation axis X2 of the dry wiping roller 18 and circumferentially covers a portion of the second cleaning element 182. In this example, the hot surface 1921 will contact the second cleaning element 182. When the heating element 191 is operating, the hot surface 1921 will continuously transfer heat to the second cleaning element 182, thereby drying the damp second cleaning element 182.

[0047] The dryer 19 is not limited to the above types. It can also be a dryer containing tubular components such as quartz tubes or carbon fiber tubes, or a dryer containing ceramic heating elements, as long as it can dry the rotating dry wiping roller 18.

[0048] To reduce heat loss at the dryer 19, a barrier 193 is provided in the rear agitation chamber 13. The barrier 193 is located between the rear end 1142 and the dryer 19; the barrier 193 contacts the dry wiping roller 18; the barrier 193 is preferably made of a rigid material. The barrier 193 can separate the dryer 19 from the outside. The structure of the barrier 193 and the arc-shaped segment 11213 of the rear sidewall 11212 can prevent the heat generated by the dryer 19 from easily dissipating.

[0049] The handle body portion 2 includes a handle 21 and a body 22 located at the top. The handle 21 is fixedly connected to the top of the body 22 and configured to be held by a user. The user can use the handle 21 to hold the surface cleaner 10 with one hand and push the cleaning base 1 of the surface cleaner 10 back and forth on the surface to be cleaned in a rearward tilted working position. The handle 21 is also provided with an operating part 211 that is signal-connected to a control unit (not shown) for the user to control the operation of the surface cleaner 10. The specific form of the operating part 211 is not limited to buttons, triggers, triggers, switches, etc. In other embodiments, the operating part may also be located in other places on the surface cleaner, such as on the top or side wall of the handle body portion below the handle. The operating part may also be a portable remote control or may be located on a handheld terminal capable of interacting with the surface cleaner.

[0050] The main body 22 can accommodate and support multiple working parts on the handle body 2. These multiple working parts include a water tank 32 that can store and supply cleaning liquid. Preferably, the water tank 32 is detachably mounted on the main body 22 so that the user can add clean water to it.

[0051] The water supply tank 32 is in fluid communication with the liquid distributor 16 on the cleaning base 1, forming a liquid delivery path (not shown in the figure) for the flow of cleaning liquid. A selectively operable pump (not shown in the figure) is also installed on this delivery path. By controlling the pump to turn it on and off, liquid can be selectively supplied to the liquid distributor 16 or the fluid communication between the water supply tank 32 and the liquid distributor 16 can be blocked. The pump can be located either inside the machine body 22 or inside the cleaning base 1. The liquid supply system, consisting of the water supply tank 32, the delivery path, the pump, and the liquid distributor 16, enables on-demand liquid supply to the wet cleaning roller 15.

[0052] The working components mounted on the body 22 also include a collection tank 41 for receiving and storing waste liquid and debris, and a suction motor 42 mounted on top of the collection tank 41. The suction nozzle 14, collection tank 41, and suction motor 42 within the cleaning base 1 are in sequential fluid communication. A suction channel 17 is located between the suction nozzle 14 and the collection tank 41. The suction motor 42 is configured to push air-containing fluid along the recycling flow path from the suction nozzle 14 toward the collection tank 41. The collection tank 41 is detachably mounted on the body 22 for easy emptying by the user. The recycling system, consisting of the suction nozzle 14, suction channel 17, collection tank 41, and suction motor 42, is capable of recycling waste liquid and debris from the surface to be cleaned.

[0053] The body 22 is also equipped with a rechargeable battery pack 51, which is electrically connected to the heating element 191 to provide power for the heating element 191.

[0054] In other embodiments, the power supply device of the body 22 may also include a power cord that can be electrically connected to a household electrical outlet. The heating element 191 is provided with the electrical energy required for heating by the alternating current introduced through the power cord.

[0055] When the surface cleaning machine 10 is working, the pump starts, and the cleaning liquid in the water supply tank 32 reaches the liquid distributor 16 through the liquid delivery path and is distributed by the liquid distributor 16 to the wet cleaning roller 15. The rotating wet cleaning roller 15 uses the cleaning liquid to scrub the surface to be cleaned. The suction motor 42 starts and forms a flowing airflow. The wet cleaning roller 15 carries the dirt and debris picked up from the surface to be cleaned into the front agitation chamber 13 along with the flowing airflow, and moves along the recovery flow path 43 towards the suction motor 42. This dirt and debris will finally be stored in the recovery tank 4. 1. Simultaneously, the rotating dry wiping roller 18 continuously contacts the surface to be cleaned by the wet cleaning roller 15, thereby absorbing the residual liquid on the surface to be cleaned by means of the second cleaning element 182. The dryer 19 starts working, and the second cleaning elements 182 of each part continuously move to the dryer 19 during rotation. With the help of the heating and drying effect of the dryer 19, the liquid absorbed by the second cleaning element 182 will be heated and evaporated. The second cleaning element 182 of the dry wiping roller 18 remains dry after long-term use and has excellent liquid absorption performance.

[0056] like Figure 8 As shown, the cleaning base 8 in this embodiment has a similar structure to the cleaning base 1 described above. It also has a front agitation chamber 82 and a rear agitation chamber 83, and a wet cleaning roller 85 and a dry wiping roller 88 are respectively arranged in the two chambers. The dryer 89 is located in the rear agitation chamber 83. The difference between the cleaning base 8 and the cleaning base 1 is that the rear agitation chamber 83 is also in fluid communication with the suction channel 87 through a narrow channel 871, that is, the fluid in the rear agitation chamber 83 can also be sucked into the suction channel 87. In order not to affect the suction effect of the nozzle 84, the cross-sectional area of ​​the narrow channel 871 is as small as possible. For example, the cross-sectional area of ​​the narrowest part of the narrow channel 871 is less than or equal to 1 / 2 of the cross-sectional area of ​​the narrowest part of the channel between the front agitation chamber 82 and the suction channel 8.

[0057] The surface cleaning machine solution of this application can be used not only in the above-mentioned vertical machines, but also in surface cleaning robots that can autonomously drive and turn on the surface to be cleaned; or in tank-type surface cleaning machines.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made without departing from the spirit and scope of this application. The scope of protection claimed by this application is defined by the appended claims, specification, and their equivalents.

Claims

1. A cleaning base capable of moving along a surface to be cleaned, characterized in that, The cleaning base includes a base having a front and a rear portion, a wet cleaning roller disposed at the front portion and rotatable about its own axis, a dry wiping roller disposed at the rear portion and rotatable about its own axis, a liquid dispenser for distributing cleaning liquid to the wet cleaning roller, and a dryer configured for drying the dry wiping roller. The wet cleaning roller includes a first roller body and a first cleaning element covering the outer peripheral surface of the first roller body and capable of being wetted by the cleaning liquid. The dry wiping roller includes a second roller body and a second cleaning element covering the outer peripheral surface of the second roller body and capable of absorbing the cleaning liquid. The rear portion includes a rear cover plate circumferentially covering a portion of the periphery of the dry wiping roller. The dryer is disposed inside the rear cover plate. The rear cover plate includes a rear sidewall located behind the dry wiping roller. The bottom edge of the rear sidewall is lower than the axis of the dry wiping roller. The lower part of the rear sidewall has an arcuate segment, and the bottom edge is located on the arcuate segment.

2. The cleaning base according to claim 1, characterized in that, A heat insulation material is provided between the dryer and the rear cover plate.

3. The cleaning base according to claim 1, characterized in that, The inner surface of the arc-shaped segment contacts or is adjacent to the second cleaning element.

4. The cleaning base according to claim 1, characterized in that, The dryer includes a heating element and a heat-conducting component that is in thermal contact with the heating element. The heat-conducting component has an arc-shaped hot surface that circumferentially covers a portion of the dry wiping roller and contacts the second cleaning element.

5. The cleaning base according to claim 1, characterized in that, A recess is provided on the inner wall of the rear cover plate, and the dryer is at least partially located within the recess.

6. The cleaning base according to claim 1, characterized in that, The front part has a front agitation chamber, the wet cleaning roller is arranged in the front agitation chamber, and the cleaning base also includes a suction channel, which is in fluid communication with the front agitation chamber at least.

7. The cleaning base according to claim 6, characterized in that, The rear part has a rear agitation chamber, in which the dry wiping roller is arranged, and the rear agitation chamber is in fluid communication with the suction channel through a narrow channel.

8. The cleaning base according to claim 1, characterized in that, The diameter of the first roller is larger than the diameter of the second roller.

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