WO2021248591A1

WO2021248591A1 - Surface cleaning machine

Info

Publication number: WO2021248591A1
Application number: PCT/CN2020/099896
Authority: WO
Inventors: 卞庄
Original assignee: 苏州爱普电器有限公司
Priority date: 2020-06-12
Filing date: 2020-07-02
Publication date: 2021-12-16
Also published as: CN113796790A; EP4162854A4; EP4162854A1; US20230218134A1; CN113796790B

Abstract

A surface cleaning machine (10), comprising: a suction device (2); a cleaning base (12) suitable for moving on a surface to be cleaned, the cleaning base (12) comprising a cleaning roller (18) capable of rotating; a cleaning liquid supply unit (3); and a waste liquid retrieving tank (4), the waste liquid retrieving tank (4) being in fluid communication with the suction device (2); the cleaning base (12) further comprises a transfer chamber adjacent to the rear side of the cleaning roller (18) and capable of temporarily storing a solid-liquid mixture; and the transfer chamber is configured to be in fluid communication with the suction device (2), so that the surface cleaning machine (10) can transfer at least a part of liquid or at least a part of a solid-liquid mixture from the transfer chamber to the waste liquid retrieving tank (4) by means of the suction device (2), thereby achieving a low energy consumption operation.

Description

Surface cleaning machine

Technical field

The invention relates to a surface cleaning machine, in particular to a surface cleaning machine which cleans by applying a cleaning liquid to a surface to be cleaned and recovers the cleaned dirty liquid.

Background technique

As is well known, floor cleaning equipment is known, for example, in the form of a floor scrubber, in which one or more cleaning rollers rotating along a horizontal axis are used as cleaning tools, which contact the floor to be cleaned and clean the floor with the assistance of a cleaning liquid. The cleaning liquid is stored in the cleaning liquid supply container and applied to the ground during the cleaning process. Subsequently, the applied cleaning fluid together with the cleaned dirt (which may include dirt, dust, stains, mud, hair and other debris) is sucked from the ground and transferred to the dirt under the action of the cleaning roller and the suction unit. Liquid storage container.

The Chinese patent with publication number CN209463915U discloses a surface cleaning device. The surface cleaning device includes a vertical handle assembly and a cleaning head mounted on the upright handle assembly and adapted to move on the surface to be cleaned; a fluid delivery system and a surface cleaning device. A fluid recovery system that draws fluid and debris. The fluid recovery system generally includes a recovery tank, a nozzle adjacent to the surface to be cleaned and in fluid communication with the recovery tank through a working air duct, and a suction source that is in fluid communication with the working air duct to suck cleaning fluid from the surface to be cleaned and It reaches the recovery tank through the nozzle and the working air pipe. The recovery tank periodically empties the collected fluid and debris, such as by removing the recovery tank from the equipment and dumping the collected fluid and debris into a sink, toilet, or other drainage device.

The above-mentioned equipment is more and more widely used because it can combine the functions of dry vacuuming and wet cleaning. However, this type of surface cleaning equipment also has a very important defect, that is, the suction source power in the equipment is relatively large. If this structure is used in a battery-powered surface cleaning equipment, the single working time of the equipment is usually very short. This is a significant disadvantage when users need to use equipment to clean large-area surfaces.

The patent document with the publication number WO2017059600A1 discloses a floor cleaner, which is provided with a cleaning cylinder, a sink, a clean water tank, a clean water supply device, a sewage tank, and an air pump. The sealing cover of the sink is buckled on the surface of the cleaning tank, and the clean water tank. The sewage tank has a cavity for storing and recycling sewage, and the cavity is also provided with a sewage inlet and an air suction port. The sewage inlet is connected with the water tank, and the suction port of the air pump is connected with the air suction port of the sewage tank. The cleaner adopts an independent air pump as the power for pumping sewage from the sewage tank, instead of using a suction motor as the power for pumping sewage from the sewage tank. Due to the low power of the air pump, the energy consumption per unit time is much lower than that of the suction motor, so the floor cleaner used in battery-powered equipment can greatly extend the working time.

However, the above-mentioned floor cleaners also have defects. The dirty liquid and garbage on the surface to be cleaned are carried by the rotating cleaning cylinder. The dirty liquid and solid garbage are treated separately. The containers for the dirty liquid and solid garbage are also separated, which will make the After the equipment is used, users need to pay a lot of cleaning work.

Therefore, although wet-type surface cleaning equipment has made great progress in various aspects, consumers still expect improved surface cleaning machines to reduce the power of the motor during cleaning operations, while maintaining the efficiency of surface cleaning operations, and reducing damage The cleaning time of the device itself.

发明内容Summary of the invention

In view of the above technical problems, the object of the present invention is to provide a surface cleaning machine that has both operating time and cleaning efficiency by improving the above-mentioned generic surface cleaning machine.

In order to achieve the above-mentioned object of the invention, the present invention provides a surface cleaning machine, including: a suction device capable of providing suction force; Roller; a cleaning liquid supply unit; and a dirty liquid recovery box, the dirty liquid recovery box is in fluid communication with the suction device; wherein, the cleaning base further includes adjacently arranged on the rear side of the cleaning roller and capable of A transfer chamber for temporarily storing a solid-liquid mixture; the transfer chamber is configured to be in fluid communication with the suction device, so that the surface cleaning machine can use the suction device to perform a surface cleaning operation. At least part of the liquid or at least part of the solid-liquid mixture in the transfer bin is transferred to the dirty liquid recovery tank.

In an advantageous embodiment, the transfer bin includes an input port for the solid-liquid mixture to enter the transfer bin, and the input port is arranged next to the cleaning roller. A particularly advantageous way is that at least part of the transfer chamber is located below the axis of rotation of the cleaning roller.

In an advantageous embodiment, the cleaning base includes a guiding inclined surface adjacent to the cleaning roller, the upper end of the guiding inclined surface extends to the input port, and the lower end is close to the lower end of the cleaning roller.

A particularly advantageous manner is that the guiding inclined surface is arranged at the front of the transfer compartment.

A particularly advantageous manner may also be that the lower end of the guiding inclined surface is a flexible part; during the movement of the cleaning base along the surface to be cleaned, the lower end of the guiding inclined surface at least partially abuts the surface to be cleaned.

In an advantageous embodiment, the transfer warehouse includes at least one bottom wall and a peripheral side wall surrounding the bottom wall.

In a particularly advantageous manner, at least one suction port is provided on the bottom wall or the lower part of the peripheral side wall of the transfer chamber, and the suction port is in fluid communication with the dirty liquid recovery tank.

A very particularly advantageous manner may be that the suction port is arranged at the intersection of the rear part of the peripheral side wall of the transfer compartment and the rear part of the bottom wall.

A very particularly advantageous manner may also be that the inner wall surface of the bottom wall is a slope surface and the position of the slope surface close to the suction port is the lowest point.

In an advantageous embodiment, the cleaning base includes a detachable dirty liquid box, and the transfer chamber is formed in the dirty liquid box.

In an advantageous embodiment, the cleaning base further includes a scraping roller device, the scraping roller device is in contact with a part of the cleaning roller, so as to move at least from the cleaning roller wetted by the dirty liquid. Remove excess dirty liquid.

In a particularly advantageous manner, the scraping roller device is arranged above the transfer chamber, so that at least part of the excess dirty liquid removed from the cleaning roller can be transferred to the transfer by gravity. Warehouse.

A particularly advantageous way may also be that the scraping roller device is arranged in airflow communication with the transfer chamber, so that at least part of the excess dirt removed from the cleaning roller can be assisted by the suction The suction force of the device is transferred to the transfer compartment.

A particularly advantageous manner may also be that the scraping roller device is configured to be able to simultaneously remove at least part of the solid waste from the cleaning roller adhered to the solid waste.

A particularly advantageous manner may also be that the scraping roller device includes at least one scraping member in contact with a part of the cleaning roller, and the scraping member is at least partially in a direction parallel to the axis of rotation of the cleaning roller. Extension; When the cleaning roller rotates, the scraping member interferes with a part of the cleaning roller.

A particularly advantageous manner may also be that the cleaning liquid supply unit includes a cleaning liquid supply tank for storing cleaning liquid and a liquid distributor arranged on the cleaning base, the liquid distributor and the cleaning liquid The supply tank is in fluid communication, and the liquid distributor is configured to deliver cleaning liquid to the cleaning roller and/or the surface to be cleaned.

A very particularly advantageous manner may be that the liquid distributor is configured to deliver cleaning liquid to the cleaning roller; in terms of the direction of rotation of the cleaning roller, the liquid distributor is located on the scraper roller. Downstream of the device, in order to apply the cleaning liquid to the cleaning roller that has been scraped off excess dirt;

A very particularly advantageous way may be to further include a body with a handle on the upper part, the cleaning base is rotatably connected to the lower part of the body, the suction device is fixedly arranged on the body, and the dirty liquid recovery tank And the cleaning liquid supply tank is detachably placed on the body.

In an advantageous embodiment, the cleaning base includes an opening located at the lower part and facing the surface to be cleaned, and the cleaning roller is at least partially located at the opening.

In an advantageous embodiment, the suction device includes a suction motor, the transfer chamber, the dirty liquid recovery tank, and the suction motor are in fluid communication in sequence, and the surface is cleaned. The machine is arranged to be able to pick up the dirty liquid and solid waste on the surface to be cleaned and transfer it to the transfer bin by means of the joint action of the suction motor and the rotating cleaning roller.

In an advantageous embodiment, the suction device includes a pump, the pump is interposed between the transfer bin and the dirty liquid recovery tank, and the surface cleaning machine is arranged to rotate The cleaning roller picks up the dirty liquid and solid garbage on the surface to be cleaned and transfers it to the transfer warehouse.

In an advantageous embodiment, the volume of the dirty liquid recovery tank is greater than the volume of the transfer chamber.

A particularly advantageous manner is that the volume of the dirty liquid recovery tank is more than 3 times the volume of the transfer chamber.

The surface cleaning machine of the present invention is provided with a transfer bin, so that the surface cleaning machine can rely on the cleaning roller to sweep at least part of the dirty liquid and solid waste directly into the transfer bin, and then there is a suction device to transfer at least the transfer bin. Part of the dirty liquid is sucked into the dirty liquid recovery tank; this arrangement allows the suction device of the surface cleaning machine to operate at a relatively low power to realize the work of transferring the surface dirty liquid and garbage, so the surface cleaning machine can Realize low energy consumption work.

附图说明Description of the drawings

Fig. 1 is a perspective view 1 of a surface cleaning machine according to an embodiment of the present invention, in which the body is in an upright storage position;

Figure 2 is a second perspective view of a surface cleaning machine according to an embodiment of the present invention, in which the body is in a backwardly inclined use position;

3 is an exploded view 1 of the surface cleaning machine according to an embodiment of the present invention, in which the cleaning liquid supply tank and the dirty liquid recovery tank on the body are separated from the casing;

4 is a cross-sectional view of the cleaning base of the surface cleaning machine of FIG. 2;

Figure 5 is an exploded view 2 of the surface cleaning machine according to an embodiment of the present invention, in which the cleaning liquid supply box and the dirty liquid recovery box are separated from the casing of the machine body, and the upper cover and the dirty liquid box are separated from the casing of the cleaning base Separate

Fig. 6 is a perspective view of the upper cover of Fig. 5 from a bottom perspective;

Figure 7 is an enlarged view of Figure 6 at A;

Figure 8 is a cross-sectional view of the upper cover taken along the direction B-B in Figure 5;

Figure 9 is a perspective view of a dirty liquid box according to an embodiment of the present invention,

Figure 10 is a cross-sectional view of the dirty liquid box along the C-C direction in Figure 9;

Fig. 11 is a schematic diagram of a cleaning liquid supply unit of a surface cleaning machine according to an embodiment of the present invention;

Fig. 12 is a schematic diagram of a dirty liquid recovery unit of a surface cleaning machine according to an embodiment of the present invention.

具体实施方式detailed description

In order to describe in detail the technical content, structural features, achieved objectives and effects of the invention, the following will be described in detail in conjunction with embodiments and accompanying drawings.

1 and 2 are schematic diagrams showing a surface cleaning machine 10 according to an embodiment of the present invention. The surface cleaning machine 10 includes a body 11 and a cleaning base 12. The surface cleaning machine 10 in this example is an upright cleaning device, and the machine can be held upright after use.

During the cleaning of the surface to be cleaned by the surface cleaning machine 10, the cleaning base 12 is supported on the surface to be cleaned and can move along the surface to be cleaned. The lower part of the body 11 is pivotally mounted to the cleaning base 12, and the body 11 can rotate relative to the cleaning base 12 between an upright stop position (as shown in FIG. 1) and a backward tilted use position (as shown in FIG. 2).

In other embodiments, the surface cleaning machine is not limited to a vertical type, and may also be a horizontal type, portable type, or the like.

The surface cleaning machine 10 is provided with a cleaning liquid supply unit and a dirty liquid recovery unit. The cleaning liquid supply unit is used for storing and externally supplying the cleaning liquid. The cleaning liquid supply unit at least includes a cleaning liquid supply tank 3 for storing the cleaning liquid. The dirty liquid recovery unit is used to remove the dirty liquid converted from the used cleaning liquid from the surface to be cleaned and remove the solid waste located on the surface to be cleaned, and store the dirty liquid and solid waste for a certain period of time; The liquid recovery unit includes at least a dirty liquid recovery tank 4 for storing dirty liquid and solid waste within a certain period of time.

For the purpose of description related to the drawings, the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", " The defined positional relationship of “outside” and its derivatives are used relative to the direction in which the user pushes the surface cleaner 10 on the surface to be cleaned (that is, the pushing direction from back to front). As used herein, the term "rear side" refers to a position behind at least another component, but does not necessarily mean behind all other components. However, it should be understood that the present invention can take various alternative orientations, unless the opposite orientation is clearly indicated.

Referring to FIG. 1, a handle 13 for the user to hold is installed on the top of the body 11. The handle 13 includes an arcuate handle 14. The operator can use the arc-shaped handle 14 to hold the surface cleaning machine 10 with one hand and thereby push the cleaning base 12 of the surface cleaning machine 10 to move back and forth on the surface to be cleaned in the state of FIG. 2. In other embodiments, the handle may also include a user interface composed of one or more operating elements, such as but not limited to buttons, triggers, triggers, switches, etc. The surface cleaning function can control the surface through these operating elements The work of all controlled components in the cleaning machine, such as being switched on or off for cleaning operation, cleaning fluid delivery adjustment, suction device power adjustment, etc. In other embodiments, the user interface may also be provided in other places of the surface cleaning machine, such as on the top wall or side wall of the body under the handle.

Referring to FIG. 3, the body 11 further includes a casing 15, and the casing 15 is a skeleton part of the body 11, which mainly functions to accommodate or carry the remaining components on the body 11. Such as carrying suction device, handle, cleaning liquid supply tank, dirty liquid recovery tank, etc. In this example, the suction device 2 is fixedly arranged in the middle of the casing 15, and the cleaning liquid supply tank 3 and the dirty liquid recovery tank 4 are detachably supported on the upper and lower parts of the casing 15, respectively.

The suction device 2 belongs to a suction force forming part of the dirty liquid recovery unit, and is used to generate a force that allows the dirty liquid to flow. The suction device 2 of this example includes a suction motor composed of a motor/wind wheel assembly arranged in a casing 15. The suction motor can provide a suction force extending to the cleaning base. The suction device 2 is in fluid communication with the dirty liquid recovery tank 4 through the upper suction passage 21 (see FIG. 12). In addition to the upper suction passage 21, the dirty liquid recovery unit also has a lower suction from the dirty liquid recovery box 4, through the casing 15 and leading to the transfer chamber 190 (see Figure 12) of the cleaning base 12. The passage 22 (see FIG. 12), namely the suction device 2, the suction passage 21, the dirty liquid recovery tank 4, the lower suction passage 22, and the transfer chamber 190 of the cleaning base 12 are connected in sequence.

In other embodiments, the suction device may also include a pump, under the action of the pump, the dirty liquid or solid-liquid mixture in the transfer chamber mentioned below is transferred to the dirty liquid recovery tank, and it is arranged according to this scheme, The pump will be placed between the transfer chamber and the dirty liquid recovery tank.

The cleaning liquid supply tank 3 includes at least one chamber for holding the cleaning liquid. In other embodiments, the cleaning liquid supply tank may further include a plurality of chambers. The cleaning liquid may be water or a mixed detergent solution mixed with detergent. The cleaning liquid supply tank 3 in this example is detachably installed on the casing 15. The user can replenish the cleaning liquid for the cleaning liquid supply tank 3 at any time as required.

The dirty liquid recovery box 4 is installed on the lower front side of the cabinet 15, and the dirty liquid recovery box 4 is detachably installed to the front of the cabinet 15. This structure can facilitate the user to empty the dirty liquid recovery box 4 as needed at any time. In other embodiments, the dirty liquid recovery tank can also be installed in other positions, even any position on the casing 15.

In addition to the above-mentioned components, the body 11 also has a rechargeable battery pack 5 mounted on the casing 15. In this embodiment, the battery pack 5 is installed on the lower rear side of the casing 15, that is, on the rear side of the dirty liquid recovery tank 4. The battery pack 5 can supply power to all the components of the surface cleaning machine 10 such as the suction device 2 that need to consume electrical energy during operation. In other embodiments, a power plug that can be electrically connected to the outside can also be provided on the machine body, and the power consuming parts on the machine can be powered by the external power supply.

Referring to FIG. 3, a cleaning base 12 according to an embodiment of the present disclosure is shown and described. The cleaning base 12 includes a casing 16 having a front side wall 161, a rear side wall 162, a left side wall 163 and a right side wall 164, a top wall 165 and a bottom wall 166, that is, the casing 16 is substantially box-shaped.

4, the inner wall of the housing 16 defines an internal space, and the cleaning roller 18, the dirty liquid box 19, and the driving device 7 are at least partially received in the internal space. The front of the housing 16 has an opening 110 (shown in FIGS. 1 and 2) extending from the front side wall 161 to the bottom wall 166. In other embodiments, the opening may only be located at the front of the bottom wall, and the front side wall of the housing is a complete wall extending from the top wall to the bottom wall.

As shown in FIGS. 3 and 5, the housing 16 is pivotally held at the lower part of the body 11 through the rotating joint 8. The rotating joint 8 includes an upper rotating portion 81 and a lower rotating portion 82, and the upper rotating portion 81 and the lower rotating portion 82 enable the body 11 to rotate between an upright stop position and a backward tilted use position.

A part of the lower suction passage 22, a part of the cleaning liquid output pipeline, and a part of the power supply circuit penetrate through the rotary joint 8. The dirty liquid and solid waste can be transported upward from the cleaning base 12 to the dirty liquid recovery tank 4 via the lower suction passage 22. The cleaning liquid can be sent down from the cleaning liquid supply tank 3 to the cleaning base 12 through the cleaning liquid output pipeline. The power supply circuit can deliver power downward from the battery pack 5 located on the upper part to the power-consuming parts of the cleaning base 12.

As shown in FIGS. 4 and 5, the front side wall 161 and the front part of the top wall 165 constitute a detachable upper cover 167. The cleaning roller 18 is provided at the front of the cleaning base 12 and is accommodated in the roller chamber 17 at the front of the internal space. The cleaning roller 18 can be rotatably supported by the left side wall 163 and the right side wall 164 of the housing 16, and the cleaning roller 18 can make a rotational movement in the direction R around the rotation axis X relative to the housing 22. In this embodiment, the roller chamber 17 communicates with the opening 110. As shown in FIGS. 1-2, the front part and the lower part of the cleaning roller 18 are located at the opening 110.

In this example, the outside of the cleaning roller 18 is covered with cleaning elements that may have bristles, fabrics, or other cleaning elements, and these cleaning elements are configured to be infiltrated by cleaning liquids such as water and detergent mixed solutions.

Continuing as shown in FIG. 4, in this example, the driving device 7 is mainly composed of motor components, and the driving device 7 is installed in the motor room 113 at the rear of the internal space. The cleaning roller 18 is operatively coupled to the driving device 7 and driven to rotate by the driving device 7. In other embodiments, the motor chamber may not be provided separately, for example, the driving device may be built into the inside of the cleaning roller.

Referring to FIGS. 5, 6, and 7, the cleaning base 12 includes a scraping roller device 6. The scraping roller device 6 is installed on the inner wall surface of the upper cover 167 of the housing 16 and located at the upper position of the roller chamber 17, and the scraping roller device 6 is located on the upper side of the dirty liquid box 19 at the same time. The doctor roller device 6 is configured to be in contact with a part of the cleaning roller 18. The scraping roller device 6 can remove excess dirty liquid and at least part of the solid waste from the cleaning roller 18 which is wetted by the dirty liquid and adhered to the solid waste. The excess dirty liquid and solid waste removed from the cleaning roller 18 by the scraper device 6 can then be finally sucked into the dirty liquid recovery tank 4 via the lower suction passage 22.

The scraping roller device 6 according to the embodiment of the present disclosure is shown and described with reference to FIGS. 6 and 7. The scraping roller device 6 includes a first scraping member 61 and a second scraping member 62, and in terms of the rotation direction R of the cleaning roller 18, the second scraping member 62 is located downstream of the first scraping member 61. The first scraping member 61 and the second scraping member 61 are substantially parallel, and there is a space 63 between the first scraping member 61 and the second scraping member 62.

The first scraping member 61 includes a plurality of tooth-shaped protrusions 611, the plurality of protrusions 611 are arranged along the direction parallel to the rotation axis X of the cleaning roller 18, and there is a gap 612 between two adjacent protrusions 611. The plurality of protrusions 611 are configured to partially penetrate into the cleaning roller 18. The rotation of the cleaning roller 18 enables the plurality of protrusions 611 on the first scraping member 61 to remove solid wastes such as hair and flocs adhering to the outer peripheral surface of the cleaning roller 18, and can also remove Part of the dirty liquid on the cleaning roller 18 is scraped off. It should be understood that unless specifically so required, the shape of the protrusion 611 is not limited to those shown and/or described in this application.

The second scraping member 62 includes a sheet-shaped scraping strip 621 configured to contact a part of the cleaning roller 18 when the cleaning roller 18 rotates, and the scraping strip 621 extends continuously in a direction parallel to the rotation axis X of the cleaning roller 18 .

In this example, the hardness of the second scraping member 62 is greater than that of the first scraping member 61. For example, the first scraping member 61 is made of plastic material, and the second scraping member 62 is made of metal material.

With the help of the structure of the first scraping member 61 and the second scraping member 62, the performance of the first scraping member 61 in removing the solid waste on the cleaning roller 18 is better than that of the second scraping member 62. The performance of the second scraping member 62 in removing excess liquid on the cleaning roller 18 is better than that of the first scraping member 61; and the friction between the second scraping member 62 and the cleaning roller 18 is greater than that of the first scraping member 61 and the friction between the cleaning roller 18.

Referring to Figure 8, it can be understood that when too much solid waste is accumulated on the cleaning roller 18 that is simultaneously infiltrated by the dirty liquid, if a scraping member like the second scraping member 62 is directly used, the existence of solid waste will be affected. This causes the surface of the cleaning roller 18 to slip, thereby reducing the efficiency of scraping the dirt liquid. According to the scheme of this case, the first scraping member 61 is used to pre-scrape the solid waste and a small part of the dirt liquid adhering to the cleaning roller 18 , When the cleaning roller 18 rotates to the subsequent second scraping member 62, the second scraping member 62 is more likely to scrape the remaining dirty liquid from the cleaning roller 18. Moreover, the first scraping member 61 of the present case is a multi-tooth-like convex structure, which is similar to a "comb" or a "rake" structure, which can simultaneously remove the cleaning elements on the surface of the cleaning roller 18 when scraping solid waste. (Such as bristles) are scattered and fluffy, which will be more conducive to the liquid scraping work of the second scraping member 62 in the later period. The dirty liquid scraped off by the second scraping member 62 (this part of the dirty liquid may contain small particles of solid waste) can flow to the outside of the scraping roller device 6 through the partition 63 and the gap 612 on the first scraping member 61 In this example, the dirty liquid and solid waste flowing out of the scraper device 6 will flow in the direction of the dirty liquid box 19 on the lower side.

4, a dirty liquid box 19 according to an embodiment of the present disclosure is shown and described. The dirty liquid box 19 is accommodated in the middle of the internal space and is located in the accommodating chamber 112 between the roller chamber 17 and the motor room. The dirty liquid box 19 is arranged to be able to receive the cleaning roller 18 and the scraping roller device 6, suction The sewage and solid waste transferred by the device 2.

As shown in Figures 9, 10, the dirty liquid box 19 of this example has a rectangular structure with an open upper part, which includes a bottom wall 191 and a circumference formed by a front side wall 192, a rear side wall 193, a left side wall 194, and a right side wall 195. The side walls, the bottom wall 191 and the peripheral side walls enclose a transfer chamber 190 capable of temporarily storing dirty liquid and dirt. In this example, the volume of the transfer bin 190 is much smaller than the volume of the dirty liquid recovery tank 4; in a preferred solution, the volume of the dirty liquid recovery tank 4 is more than three times the volume of the transfer bin 190.

A suction port 196 is provided at the intersection of the lower part of the rear side wall 193 and the rear of the bottom wall 191. The suction port 196 is in fluid communication with the dirty liquid recovery tank 4 through the lower suction channel 22 passing through the rotary joint 8 (see Figure 12). Under the suction effect of the suction device 2, the dirty liquid or solid-liquid mixture entering the transfer chamber 190 can be sent to the dirty liquid recovery tank 4. In this example, in order to facilitate the flow of dirty liquid in the transfer chamber 190 to the suction port 196, the inner wall surface of the bottom wall 191 is set as a slope surface 1911 inclined backward, and the slope surface 1911 is close to the suction port 196 The position is the lowest.

4 and 10, the positional relationship between the dirty liquid box 19 and the cleaning roller 18 according to the disclosed embodiment of the present invention is shown and described. The front side wall 192 of the dirty liquid box 19 is close to the cleaning roller 18. The transfer chamber 190 has an input port 197 for the solid-liquid mixture to enter the transfer chamber 190, and the input port 197 is arranged on the front side wall 192 and close to the cleaning roller 18.

In this example, the transfer bin 190 is partially located below the rotation axis X of the cleaning roller 18, and the mouth of the input port 197 is also partially located below the rotation axis X. The front side wall 192 has a guiding inclined surface 1921 adjacent to the cleaning roller 18, the upper end 19211 of the guiding inclined surface 1921 extends to the input port 197, and the lower end 19212 is close to the lower end 181 of the cleaning roller 18.

In this example, the lower end of the guiding inclined surface 192 is a flexible part made of flexible material. During the movement of the cleaning base 12 on the surface to be cleaned, the lower end 1922 of the guiding inclined surface 192 at least partially abuts against the surface to be cleaned. As a result, a mouth defined by the lower end 19212 of the guide slope 192, the lower end 181 of the cleaning roller 18, the lower end of the left side wall 163 and the lower end of the right side wall 164 and the surface to be cleaned form a gap. Stable feed port 1101. This feed port 1101 on the one hand facilitates the use of the lower end 19212 of the guide slope 192 to push the dirty liquid and solid waste on the surface to be cleaned to the feed port 1101, and on the other hand, it also facilitates the feeding The port 1101 and the surface to be cleaned always form a "dynamic seal". The advantages of these two aspects ultimately increase the dirt absorption capacity of the surface cleaner.

4 and 8, the scraping roller device 6 is located above the input port 197, and the second scraping member 62 is located above the first scraping member 61, and the lower part of the first scraping member 61 is close to the bottom of the dirty liquid box 19 Input port 197. In this example, the dirty liquid or solid waste scraped off by the first scraping member 61 and the second scraping member 62 will enter the transfer chamber 190 from the input port 197.

Referring to FIG. 11, a schematic diagram of a cleaning liquid supply unit according to an embodiment of the present disclosure is shown and described. According to the figure, in addition to the cleaning liquid supply tank 3, the cleaning liquid supply unit also has a first liquid pump 44, a second liquid pump 45, a control unit 46 that controls the operation of the first liquid pump 44 and the second liquid pump 45, The first cleaning liquid distributor 42 is composed of a plurality of first liquid outlet holes 421, and the second cleaning liquid distributor is composed of a pair of outlet holes 198 (see FIG. 9) located at the lower part of the dirty liquid box 19 and arranged opposite to each other.器43. The first liquid pump 44, the second liquid pump 45, and the control unit 46 can constitute a flow path control device that supplies the cleaning liquid in the cleaning liquid supply tank 3 to the first cleaning liquid distributor 42 and the second cleaning liquid distributor 43 41. When the flow control device 41 is performing its work, it may be that the cleaning liquid in the cleaning liquid supply tank 3 is only supplied to the first cleaning liquid distributor 42, or it may be that the cleaning liquid in the cleaning liquid supply tank 3 is supplied to the first cleaning liquid distributor 42. At the second cleaning liquid distributor 43, the cleaning liquid in the cleaning liquid supply tank 3 can also be supplied to the first cleaning liquid distributor 42 and the second cleaning liquid distributor 43 at the same time.

In this example, the first cleaning liquid dispenser 42 is used to apply clean cleaning liquid to the cleaning roller 18, and then the rotating cleaning roller 18 applies the clean cleaning liquid to the floor to be cleaned. The second cleaning liquid distributor 43 can rinse the inner wall surface of the dirty liquid box 19 with clean cleaning liquid, and the washing function can effectively remove the solid dirt adhering to the inner wall surface of the dirty liquid box 19.

As shown in FIG. 9, the pair of outlet holes 198 in this example are located at the lower part of the left side wall 194 and the right side wall 195 of the dirty liquid box 19. The outlet hole 198 is configured to guide the spray of the cleaning liquid downward at an angle of 10°-80° from the horizontal direction, so that the cleaning liquid can be sprayed to the inner and lower regions of the dirty liquid box. The first liquid pump 44 is disposed in the casing 15 of the machine body 11, and the second liquid pump 45 is disposed in the casing 16 of the cleaning base 12, and the control unit 46 is integrated on the control board (not shown in the figure) of the machine. In other embodiments, the first cleaning liquid distributor can also choose to deliver the cleaning liquid directly to the surface to be cleaned.

In this example, the flow control device 41 of the cleaning liquid supply unit can not only deliver the cleaning liquid to the first cleaning liquid distributor 42 and the second cleaning liquid distributor 43 as required, but also can deliver the cleaning liquid to the first cleaning liquid distributor as required. 42 and the second cleaning liquid distributor 43 provide different flow rates of cleaning liquid. In this example, in order to achieve as little residual dirty liquid as possible during the floor cleaning process and as large a flow as possible to flush the inner wall surface of the dirty liquid box 19, the flow path control device 41 is configured to supply the cleaning liquid in the cleaning liquid supply tank 3. The second cleaning liquid distributor 43 provides a larger liquid flow rate than when the cleaning liquid in the cleaning liquid supply tank 3 is supplied to the first cleaning liquid distributor 42. In order to meet the requirements of different flow rates, in this example, the control unit 46 controls the second liquid pump 45 to work at a larger flow rate than the first liquid pump 44.

In other embodiments, a combination of a single fluid pump and a three-way valve can also be used to replace the two fluid pump solutions mentioned above. The three-way valve is used to switch between the two flow paths freely and control the single The flow rate of the fluid pump is realized in the two types to work according to different flow rates.

Referring to FIG. 12, a schematic diagram of the principle of the dirty liquid recovery unit according to an embodiment of the present disclosure is shown and described. In terms of the rotation direction R of the cleaning roller 18, the first cleaning liquid distributor 42 is located downstream of the scraping roller device 6, and the scraping roller device 6 is located downstream of the input port 197 and upstream of the first cleaning liquid distributor 42.

As the cleaning roller 18 rotates around the R direction, the first cleaning liquid distributor 42 continuously applies cleaning liquid to the cleaning roller 18, and the cleaning roller 18 carrying the cleaning liquid is in contact with the surface 60 to be cleaned. Wet scrub to clean the surface 60. In the process of cleaning the surface 60 to be cleaned by the cleaning roller 18, the used cleaning liquid is contaminated and turned into dirty liquid. Part of the dirty liquid is absorbed by the cleaning elements on the outer surface of the cleaning roller 60, and part of it is generated when the cleaning roller 18 rotates. The centrifugal force and the suction force of the suction device 2 acting on the inlet 1101 are carried upward away from the surface 60 to be cleaned.

At the same time, some of the solid waste that cannot be dissolved in the cleaning liquid will adhere to the cleaning roller 18, and some will be affected by the centrifugal force generated by the rotation of the cleaning roller 18 and the suction force of the suction device 2 acting on the inlet 1101. Take up and away from the surface 60 to be cleaned. The dirty liquid and solid waste not loaded on the cleaning roller 18 will then be directly sent from the input port 197 into the transfer bin 190 in the dirty liquid box 19. The dirty liquid absorbed by the cleaning roller 60 and the solid waste adhering to the cleaning roller 60 will continue to move downstream (that is, the upper side) after passing through the input port 197. When moving to the scraping roller device 6, the first scraping The component 61 and the second scraping component 62 will rub against the cleaning roller 18 in turn, so as to remove the excess dirt absorbed by the cleaning roller 60 and the solid waste adhering to the cleaning roller 60 from the cleaning roller 18, under the action of gravity. As well as the suction effect of the suction device 2, this part of the scraped dirty liquid and solid waste will flow back down to the input port 197 and enter the transfer bin 190 in the dirty liquid box 19. In other embodiments, the excess dirty liquid removed from the cleaning roller can also flow into the transfer chamber in the dirty liquid box located at the lower part of the dirty liquid box only under the action of gravity.

At least part of the dirty liquid and solid waste entering the transfer warehouse 190 will flow to the suction port 196 and be transferred to the dirty liquid recovery tank 4 by the suction device 2 through the lower suction channel 22 in real time. The dirty liquid and solid waste will be retained in the dirty liquid recovery tank 4, and clean air will flow from the upper suction channel 21 to the suction device 2, and finally escape to the outside.

In this way, the sewage recovery unit has completed a stage of recovery of sewage and solid waste. In the next stage, the "clean" cleaning roller 18 that is removed by the scraping roller device 6 of excess liquid and solid waste will continue to rotate around the X axis, and the first cleaning liquid distributor 42 will continue to deliver clean cleaning to the cleaning roller 18 In this step, the cleaning work of all the surfaces 60 to be cleaned is completed.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and their purpose is to enable those familiar with the technology to understand the content of the present invention and implement them accordingly, and cannot limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

A surface cleaning machine is characterized in that it comprises:

The suction device can provide suction force;

A cleaning base, the cleaning base is adapted to move on the surface to be cleaned and includes a rotatable cleaning roller;

Cleaning liquid supply unit; and

A dirty liquid recovery box, the dirty liquid recovery box is in fluid communication with the suction device;

Wherein, the cleaning base further includes a transfer chamber arranged adjacent to the rear side of the cleaning roller and capable of temporarily storing a solid-liquid mixture; the transfer chamber is configured to be in fluid communication with the suction device, so that The surface cleaning machine can transfer at least part of the liquid or at least part of the solid-liquid mixture in the transfer bin to the dirty liquid recovery tank by means of the suction device when performing a surface cleaning operation.
The surface cleaning machine according to claim 1, wherein the transfer bin includes an input port for the solid-liquid mixture to enter the transfer bin, and the input port is arranged next to the cleaning roller.
The surface cleaning machine according to claim 2, wherein at least part of the transfer bin is located below the rotation axis of the cleaning roller.
The surface cleaning machine according to claim 1, wherein the cleaning base includes a guide slope adjacent to the cleaning roller, and the upper end of the guide slope extends to the input port, and the lower end is close to the Clean the lower end of the roller.
The surface cleaning machine according to claim 4, wherein the guide slope is arranged at the front of the transfer bin.
The surface cleaning machine according to claim 4, wherein the lower end of the guide slope is a flexible part; during the movement of the cleaning base along the surface to be cleaned, the lower end of the guide slope is at least partially abutted The surface to be cleaned.
The surface cleaning machine according to claim 1, wherein the transfer chamber includes at least one bottom wall and a peripheral side wall surrounding the bottom wall.
The surface cleaning machine according to claim 7, wherein the bottom wall or the lower part of the peripheral side wall of the transfer chamber is provided with at least one suction port, and the suction port is in fluid communication with the dirty liquid recovery tank .
The surface cleaning machine according to claim 8, wherein the suction port is arranged at the intersection of the rear part of the peripheral side wall of the transfer chamber and the rear part of the bottom wall.
The surface cleaning machine according to claim 8, wherein the inner wall surface of the bottom wall is a slope surface and the position of the slope surface close to the suction port is the lowest point.
The surface cleaning machine according to claim 1, wherein the cleaning base comprises a detachable dirty liquid box, and the transfer chamber is formed in the dirty liquid box.
The surface cleaning machine according to claim 1, wherein the cleaning base further comprises a scraping roller device, the scraping roller device is in contact with a part of the cleaning roller, so as to prevent at least from being wetted by the dirty liquid. Remove excess dirty liquid from the cleaning roller.
The surface cleaning machine according to claim 12, wherein the scraping roller device is arranged above the transfer chamber, so that at least part of the excess dirt removed from the cleaning roller can be Transfer to the transfer warehouse by gravity.
The surface cleaning machine according to claim 12, wherein the scraping roller device is arranged to be in airflow communication with the transfer chamber, so that at least part of the excess dirt removed from the cleaning roller is It can be transferred to the transfer compartment by means of the suction force of the suction device.
The surface cleaning machine according to claim 12, wherein the scraping roller device is configured to simultaneously remove at least part of the solid waste from the cleaning roller adhered to the solid waste.
The surface cleaning machine according to claim 12, wherein the scraping roller device includes at least one scraping member in contact with a part of the cleaning roller, and at least part of the scraping member is parallel to The rotation axis direction of the cleaning roller extends; when the cleaning roller rotates, the scraping member interferes with a part of the cleaning roller.
The surface cleaning machine according to claim 12, wherein the cleaning liquid supply unit comprises a cleaning liquid supply tank for storing cleaning liquid and a liquid distributor arranged on the cleaning base, and the liquid distribution The device is in fluid communication with the cleaning liquid supply tank, and the liquid distributor is configured to deliver the cleaning liquid to the cleaning roller and/or the surface to be cleaned.
The surface cleaning machine according to claim 17, wherein the liquid dispenser is configured to deliver the cleaning liquid to the cleaning roller; in terms of the rotation direction of the cleaning roller, the liquid A distributor is located downstream of the scraping roller device so as to apply the cleaning liquid to the cleaning roller that has been scraped off excess dirt liquid.
The surface cleaning machine according to claim 17, further comprising a body with a handle on the upper part, the cleaning base is rotatably connected with the lower part of the body, and the suction device is fixedly arranged on the body, The dirty liquid recovery tank and the cleaning liquid supply tank are detachably arranged on the body.
The surface cleaning machine according to claim 1, wherein the cleaning base includes an opening located at a lower portion and facing the surface to be cleaned, and the cleaning roller is at least partially located at the opening.
The surface cleaning machine according to claim 1, wherein the suction device includes a suction motor, and the transfer chamber, the dirty liquid recovery tank, and the suction motor are in fluid communication in sequence The surface cleaning machine is arranged to be capable of picking up the dirty liquid and solid waste on the surface to be cleaned by the combined action of the suction motor and the rotating cleaning roller and transferring it to the transfer warehouse.
The surface cleaning machine according to claim 1, wherein the suction device comprises a pump, and the pump is interposed between the transfer chamber and the dirty liquid recovery tank, and the surface cleaning The machine is arranged to pick up the dirty liquid and solid waste on the surface to be cleaned by means of the rotating cleaning roller and transfer it to the transfer bin.
The surface cleaning machine according to claim 1, wherein the volume of the dirty liquid recovery tank is greater than the volume of the transfer chamber.
The surface cleaning machine according to claim 23, wherein the volume of the dirty liquid recovery tank is more than 3 times the volume of the transfer chamber.