CN116602590A

CN116602590A - Control method of surface cleaning equipment

Info

Publication number: CN116602590A
Application number: CN202310708713.2A
Authority: CN
Inventors: 孙建清; 谢明健; 徐振轩; 吴飞; 唐成; 段飞; 罗吉成
Original assignee: Beijing Shunzao Technology Co Ltd
Current assignee: Beijing Shunzao Technology Co Ltd
Priority date: 2023-06-14
Filing date: 2023-06-14
Publication date: 2023-08-18

Abstract

The present disclosure provides a control method of a surface cleaning apparatus, comprising: after the surface cleaning equipment is started, the surface cleaning equipment obtains a surface foam treatment signal to be cleaned, and a foam generator of the surface cleaning equipment is controlled to provide cleaning foam for the surface to be cleaned for a first preset time at a preset flow rate; and controlling the stirring member to rotate while the surface cleaning apparatus is moved forward, rolling up the liquid foam of the surface to be cleaned by stirring of the stirring member, and transporting the mixture of air, liquid and liquid foam into the recovery storage section by the suction nozzle of the surface cleaning apparatus; wherein, in a cleaning cycle, the defoamer storage part of the surface cleaning device is controlled to provide the inhibitor for the fourth preset time to the recovery storage part at a preset flow, the first preset time is longer than the fourth preset time, and the first preset time is longer than the fourth preset time; wherein the cleaning cycle is detached from the surface cleaning apparatus as a split point with the recovery storage.

Description

Control method of surface cleaning equipment

Technical Field

The present disclosure relates to a control method of a surface cleaning apparatus.

Background

Existing floor cleaners perform cleaning of floors with a high flow of cleaning liquid in a manner that is capable of completely wetting the floor to be cleaned. The cleaning head transfers dust from the floor to the cleaning liquid by wetting the hard floor surface, after which the cleaning liquid is removed from the hard floor surface and held as contaminated cleaning liquid in the recovery storage.

Wet surface cleaners generally have: a cleaning liquid storage section for containing a cleaning liquid; a recovery storage unit for recovering contaminants recovered from the floor to be cleaned; a motor-driven vacuum source for forming a vacuum-pumping flow path from the cleaned floor to the recovery storage part; a rechargeable battery to provide energy to each component; a base station for charging and post-cleaning maintenance of the wet surface cleaner.

In order to enhance the cleaning effect, the wet surface cleaner of the related art needs to add a cleaning agent to the cleaning liquid storage part when in use. However, the ratio of the cleaning agent to the clear water is difficult to control manually, and excessive cleaning agent can cause wet and slippery ground; no detergent is added or the cleaning dosage is small, and the cleaning effect is poor.

Cleaning a surface to be cleaned by providing foam to the floor is one of the means to solve the above-mentioned technical problems. For example, chinese patent publication CN218684168U provides a cleaning apparatus for cleaning a surface to be cleaned by spraying foam. However, when the surface cleaning apparatus is in use, a large amount of foam exists in the sewage tank, and when the foam contacts with the water level detection probe of the sewage tank, the water level detection probe of the sewage tank can be in false alarm. Moreover, when the sewage tank is filled with the foam, the working efficiency of the gas-liquid separator can be affected, and even the foam enters the HEPA component, so that the service life of the HEPA component is reduced. In extreme cases, the service life of the suction device may be affected.

Disclosure of Invention

In order to solve one of the above technical problems, the present disclosure provides a control method of a surface cleaning apparatus.

According to one aspect of the present disclosure, there is provided a control method of a surface cleaning apparatus, comprising:

after the surface cleaning equipment is started, the surface cleaning equipment obtains a surface foam treatment signal to be cleaned, and a foam generator of the surface cleaning equipment is controlled to provide cleaning foam for the surface to be cleaned for a first preset time at a preset flow rate, so that at least part of the cleaning foam is positioned on the surface to be cleaned in front of a stirring piece of the surface cleaning equipment; and

controlling the stirring piece to rotate while the surface cleaning device moves forwards, rolling up liquid foam on the surface to be cleaned by stirring of the stirring piece, and conveying a mixture of air, liquid and liquid foam to the recovery storage part by a suction nozzle of the surface cleaning device;

wherein, in a cleaning cycle, the defoamer storage part of the surface cleaning device is controlled to provide the inhibitor for the fourth preset time to the recovery storage part at a preset flow, the first preset time is longer than the fourth preset time, and the first preset time is longer than the fourth preset time; wherein the cleaning cycle is detached from the surface cleaning apparatus as a split point with the recovery storage.

According to the control method of the surface cleaning apparatus of at least one embodiment of the present disclosure, the defoamer storage part is connected to the suction nozzle through a defoamer line, and the defoamer stored in the defoamer storage part is discharged to the suction nozzle through positive pressure.

According to the control method of the surface cleaning apparatus of at least one embodiment of the present disclosure, the defoamer pump is provided on the defoamer pipeline, and the defoamer pump works for a preset time when the interior of the suction nozzle is in a negative pressure environment.

According to the control method of the surface cleaning apparatus of at least one embodiment of the present disclosure, the defoamer storage part is connected to the suction nozzle through a defoamer line, and the defoamer stored in the defoamer storage part is discharged to the suction nozzle through negative pressure suction.

According to the control method of the surface cleaning apparatus of at least one embodiment of the present disclosure, the defoamer pipeline is provided with a solenoid valve, and the solenoid valve is opened for a preset time when the interior of the suction nozzle is in a negative pressure environment.

According to a control method of a surface cleaning apparatus of at least one embodiment of the present disclosure, the surface cleaning apparatus includes a cleaning liquid storage part and a cleaning liquid pump connected to the cleaning liquid storage part so as to supply cleaning liquid to a stirring member while stirring the stirring member by the cleaning liquid pump.

According to a control method of a surface cleaning apparatus of at least one embodiment of the present disclosure, the cleaning liquid pump supplies cleaning liquid to the stirring member at a first flow rate before the first preset time; after the first preset time begins, the cleaning liquid pump supplies cleaning liquid to the stirring piece at a second flow rate, wherein the first flow rate is smaller than the second flow rate.

According to a control method of the surface cleaning apparatus of at least one embodiment of the present disclosure, the recovery storage section includes a level gauge for detecting an amount of dirty liquid within the recovery storage section.

According to a control method of the surface cleaning apparatus of at least one embodiment of the present disclosure, power supply to the liquid level meter is stopped for a third preset time after the foam generator is started.

According to a control method of the surface cleaning apparatus of at least one embodiment of the present disclosure, the third preset time is longer than the first preset time.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural view of a surface cleaning apparatus according to one embodiment of the present disclosure.

Fig. 2 is a schematic structural view of a floor brush assembly according to one embodiment of the present disclosure.

Fig. 3 is a schematic diagram of a front view of a floor brush assembly according to one embodiment of the present disclosure.

Fig. 4 is a schematic bottom view of a floor brush assembly according to one embodiment of the present disclosure.

Fig. 5 is an enlarged schematic view of a portion a of fig. 4.

Fig. 6 is a schematic structural view of a nozzle according to one embodiment of the present disclosure.

Fig. 7 is a schematic cross-sectional structural view of a nozzle according to one embodiment of the present disclosure.

Fig. 8 illustrates a schematic diagram of a surface cleaning apparatus according to one embodiment of the present disclosure.

Fig. 9 shows a schematic diagram of a surface cleaning apparatus according to one embodiment of the present disclosure.

Fig. 10 illustrates a schematic diagram of a frame portion according to one embodiment of the present disclosure.

Fig. 11 is a schematic structural view of a foam generator according to one embodiment of the present disclosure.

Fig. 12 and 13 are schematic structural views of a liquid pump according to an embodiment of the present disclosure.

Fig. 14 is a schematic structural view of a mixing chamber according to one embodiment of the present disclosure.

Fig. 15 is a flowchart of a control method of a surface cleaning apparatus according to one embodiment of the present disclosure.

Fig. 16 is a flowchart of a control method of a surface cleaning apparatus according to another embodiment of the present disclosure.

The reference numerals in the drawings specifically are:

100 handle portion

200 frame portion

300 cleaning liquid storage part

400 recovery storage unit

401 recovery pipeline

500 connection parts

600 floor brush assembly

610 frame body

620 suction nozzle

630 stirring piece

640 cover body

650 nozzle

651 first body

652 second body

653 incision

654 first mounting portion

655 second mounting portion

670 foaming agent storage part

680 cleaning liquid pump

690 water outlet strip

691 wiper strip

692 defoamer storage section

693 defoamer pump

694 seal box

800 foam generator

810 gas pump

820 liquid pump

821 extrusion assembly

822 hose

830 mixing chamber

831 first inlet

832 second inlet

833 mixing chamber

834 columnar filter

840 drive means.

Detailed Description

The present disclosure is described in further detail below with reference to the drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant content and not limiting of the present disclosure. It should be further noted that, for convenience of description, only a portion relevant to the present disclosure is shown in the drawings.

In addition, embodiments of the present disclosure and features of the embodiments may be combined with each other without conflict. The technical aspects of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the exemplary implementations/embodiments shown are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Thus, unless otherwise indicated, features of the various implementations/embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concepts of the present disclosure.

The use of cross-hatching and/or shading in the drawings is typically used to clarify the boundaries between adjacent components. As such, the presence or absence of cross-hatching or shading does not convey or represent any preference or requirement for a particular material, material property, dimension, proportion, commonality between illustrated components, and/or any other characteristic, attribute, property, etc. of a component, unless indicated. In addition, in the drawings, the size and relative sizes of elements may be exaggerated for clarity and/or descriptive purposes. While the exemplary embodiments may be variously implemented, the specific process sequences may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in reverse order from that described. Moreover, like reference numerals designate like parts.

When an element is referred to as being "on" or "over", "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to," or "directly coupled to" another element, there are no intervening elements present. For this reason, the term "connected" may refer to physical connections, electrical connections, and the like, with or without intermediate components.

For descriptive purposes, the present disclosure may use spatially relative terms such as "under … …," under … …, "" under … …, "" lower, "" above … …, "" upper, "" above … …, "" higher "and" side (e.g., as in "sidewall"), etc., to describe one component's relationship to another (other) component as illustrated in the figures. In addition to the orientations depicted in the drawings, the spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture. For example, if the device in the figures is turned over, elements described as "under" or "beneath" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "below" … … can encompass both an orientation of "above" and "below". Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising," and variations thereof, are used in the present specification, the presence of stated features, integers, steps, operations, elements, components, and/or groups thereof is described, but the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof is not precluded. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximation terms and not as degree terms, and as such, are used to explain the inherent deviations of measured, calculated, and/or provided values that would be recognized by one of ordinary skill in the art.

As shown in fig. 1, the surface cleaning apparatus of the present disclosure is used for cleaning a floor surface to be cleaned, and preferably, the surface cleaning apparatus is capable of wet cleaning the floor surface to be cleaned and recovering liquid after cleaning the floor surface to be cleaned to the surface cleaning apparatus.

As shown in fig. 1, the surface cleaning apparatus may structurally include a handle portion 100, a frame portion 200, a cleaning liquid storage portion 300, a recovery storage portion 400, a connection portion 500, and a floor brush assembly 600.

In use, the floor brush assembly 600 of the present disclosure is configured to be movable over a floor surface to be cleaned to wet clean the floor surface to be cleaned by the floor brush assembly 600.

The handle portion 100 is used for operating the surface cleaning apparatus, more specifically, on the one hand, an operator can realize control of the posture of the surface cleaning apparatus by operating the handle portion 100, for example, when the frame portion 200 of the surface cleaning apparatus is in an inclined state (i.e., at an angle of approximately 60 ° to the surface to be cleaned) or in a substantially lying state (i.e., substantially parallel to the surface to be cleaned), the surface cleaning apparatus is in a cleaning mode; when the frame part 200 of the surface cleaning apparatus is in a vertical state, at this time, the surface cleaning apparatus is in a stopped state, or when the surface cleaning apparatus is in a base station, the frame part 200 of the surface cleaning apparatus is also in a substantially vertical state; on the other hand, physical buttons may be provided on the handle portion 100, so that the surface cleaning apparatus may be controlled by the physical buttons, for example, controlling start and stop of the surface cleaning apparatus, controlling liquid supply speed and suction power of the surface cleaning apparatus, and the like, so that a user of the surface cleaning apparatus experiences better.

The handle portion 100 can be provided at an upper end of the frame portion 200, so that the surface cleaning apparatus can be operated by operating the handle portion 100. In the present disclosure, the frame part 200 is formed as a main force-receiving structure of the surface cleaning apparatus, and both the cleaning liquid storage part 300 and the recovery storage part 400 of the surface cleaning apparatus can be directly or briefly fixed to the frame part 200.

The cleaning liquid storage part 300 is formed in the shape of a tank to store the cleaning liquid in the cleaning liquid storage part 300. In one embodiment, the cleaning liquid may be clean water. Of course, those skilled in the art will recognize that the cleaning liquid storage portion 300 may store a mixture of clean water and cleaning agent.

The frame part 200 is formed with a receiving space thereon, and the cleaning liquid storage part 300 can be disposed in the receiving space such that a portion of the outer surface of the cleaning liquid storage part 300 is formed as a portion of the outer surface of the surface cleaning apparatus.

In the present disclosure, the cleaning liquid storage part 300 is detachable from the frame part 200 and is manually filled with cleaning liquid by a user; of course, the cleaning liquid storage portion 300 of the present disclosure may also be filled with the cleaning liquid of the cleaning liquid storage portion 300 through the cleaning liquid interface provided on the frame portion 200.

Still further, when the cleaning liquid interface is provided on the frame part 200, the cleaning liquid storage part 300 may be provided inside the frame part 200, in which case the cleaning liquid storage part 300 is not formed as at least part of the outer surface of the surface cleaning apparatus.

In this disclosure, in order to achieve cleaning of a surface to be cleaned, the cleaning liquid storage part 300 is connected to the floor brush assembly 600 at least through a cleaning liquid pipe, so that the cleaning liquid is supplied to the floor brush assembly 600, on one hand, the surface to be cleaned can be directly cleaned by the cleaning liquid, and on the other hand, the cleaning liquid can be mixed with a cleaning agent or the like to form foam, and cleaning of the surface to be cleaned can be achieved by the foam.

As shown in fig. 1, the frame part 200 is formed with a receiving space, and the recovery storage part 400 is detachably provided to the frame part 200 and is positioned in the receiving space, so that when the liquid stored in the recovery storage part 400 is more, a user can remove the recovery storage part 400, pour out the sewage inside and clean up the solid garbage, and at this time, a part of the outer surface of the recovery storage part 400 is formed as a part of the outer surface of the surface cleaning apparatus.

In order to recover the liquid after cleaning the surface to be cleaned, the recovery storage 400 can be connected to the floor brush assembly 600 through a recovery pipe 401, and accordingly, a mixture of sewage and gas (dirt) can be recovered to the recovery storage 400 through the recovery pipe 401.

Accordingly, the surface cleaning apparatus further comprises a suction device (not shown in the drawings), wherein the suction device is capable of generating a negative pressure and providing the negative pressure to the recovery storage 400, thereby realizing a forced flow of gas and sewage within the recovery line 401. In the present disclosure, the gas discharged from the suction device can flow to the outside of the surface cleaning apparatus through the slit on the part of the outer surface of the surface cleaning apparatus.

The frame part 200 is connected to the floor brush assembly 600 through the connection part 500 such that the frame part 200 is pivotably connected to the floor brush assembly 600, and in the present disclosure, the frame part 200 has at least two rotational degrees of freedom with respect to the floor brush assembly 600, thereby enabling a user to more conveniently operate the surface cleaning apparatus.

The structure of the floor brush assembly 600 is described in detail with reference to the accompanying drawings.

In the present disclosure, the floor brush assembly 600 may include a frame portion 610, a suction nozzle 620, a stirring member 630, a cover 640, and the like.

The frame portion 610 is configured to be connected to the frame portion 200 by the connection portion 500, and the frame portion 610 is adapted to be moved over a floor surface to be cleaned. For example, the frame portion 610 may include two scroll wheels. The frame 610 can define a receiving cavity for the brush assembly, the receiving cavity being located in the front half of the brush assembly (forward of the direction of movement of the surface cleaning apparatus when cleaning a surface to be cleaned) so as to receive the stirring element 630 therein, and accordingly the stirring element 630 is also located in the front half of the brush assembly.

The frame 610 has a suction nozzle 620 formed thereon, and in the present disclosure, the suction nozzle 620 is disposed adjacent to the stirring member 630 and is located at the rear of the stirring member 630. In the present disclosure, the suction nozzle 620 is connected to the recovery line 401 and is formed as a start point of a recovery path.

The agitator 630 is configured to agitate the floor surface to be cleaned; that is, when the surface cleaning apparatus is performing a cleaning operation or a self-cleaning operation, the stirring member 630 can be driven to rotate by the motor, whereby the stirring member 630 can be in frictional contact with the floor surface to be cleaned and the cleaning of the floor surface to be cleaned can be achieved. During frictional contact of the stirring member 630 with the floor surface to be cleaned, the cleaning liquid can be supplied to the stirring member 630, thereby achieving wet cleaning of the floor surface to be cleaned.

The cover 640 is disposed on the frame 610 and is configured to partially surround the stirring member 630; in one embodiment, the cover 640 is also formed as part of the receiving cavity. In other words, the cover 640 and the frame 610 together form the accommodating chamber.

Fig. 3 is a schematic diagram of a front view of a floor brush assembly according to one embodiment of the present disclosure. Fig. 4 is a schematic bottom view of a floor brush assembly according to one embodiment of the present disclosure. Fig. 5 is an enlarged schematic view of a portion a of fig. 4.

More specifically, as shown in fig. 4, the cover 640 has at least a first edge and a second edge, wherein the second edge of the cover 640 is an edge near the frame 610, and the first edge of the cover 640 is an edge far from the frame 610, whereby the first edge is formed as a free end.

More preferably, the first edge is arranged to be located above a horizontal plane passing through the rotational axis of the agitator 630, so that it has a reasonable height with respect to the surface to be cleaned, increasing the coverage area of the foam sprayed by the nozzle.

The first edge has a substantially planar shape, and the nozzle 650 is mounted to the cover 640 at a central position of the first edge, whereby the nozzle 650 is at a central position in a lateral direction (the lateral direction is a horizontal direction perpendicular to the front-rear direction) so that the nozzle 650 can spray the foam of a fan-shaped radiation surface from the center toward the edge.

Fig. 6 is a schematic structural view of a nozzle according to one embodiment of the present disclosure. Fig. 7 is a schematic cross-sectional structural view of a nozzle according to one embodiment of the present disclosure.

As shown in fig. 6 and 7, the nozzle 650 can supply the cleaning foam generated by the foam generator 800 to the surface to be cleaned. That is, the foam generator 800 is capable of generating high-pressure foam, and the high-pressure foam is ejected from the nozzle 650 at a high speed, so that the cleaning foam has a large coverage area.

Structurally, the nozzle 650 includes a first body 651 and a second body 652 coupled to each other; wherein the first body 651 and the second body 652 may be integrally formed, or may be separately formed, and mounted or fixed together.

In the present disclosure, as shown in fig. 6 and 7, the first body 651 is formed as a thin-walled part of a hemispherical shape such that the inside of the first body 651 is formed as a hemispherical buffer cavity, i.e., the outer surface of the first body 651 is a hemispherical surface, and accordingly, the inner surface of the first body 651 is a hemispherical surface, thereby providing the first body 651 with a substantially uniform wall thickness as a whole.

At least a portion of the second body 652 is formed in a cylindrical shape, for example, an end of the second body 652 to which the first body 651 is connected is formed in a substantially cylindrical shape. In the present disclosure, preferably, the outer diameter (diameter) of the cylindrical portion of the second body 652 is the same as the diameter of the outer surface of the first body 651.

The second body 652 includes a transfer passage for transferring the cleaning foam, and the transfer passage communicates with the hemispherical cushion chamber; as shown in fig. 7, the transfer passage is formed in a cylindrical shape, and the inner diameter (diameter) of the transfer passage is the same as the diameter of the inner surface of the first body 651, so that the cleaning foam has as little resistance as possible during transfer.

As shown in fig. 6, the nozzle 650 further includes a slit 653, through which slit 653 cleaning foam is supplied to the surface to be cleaned; in a specific embodiment, the cutout 653 is disposed laterally through the first body 651 and in communication with the hemispherical cushion chamber such that upon removal of the cleaning foam from the cutout 653, a fan-shaped radiating surface is formed.

That is, when the cutout 653 of the first body 651 is formed, a groove having a constant width and a constant depth may be cut from the apex of the first body 651 toward the center of the sphere. When the nozzle 650 is attached to the cover 640, the slit 653 may be maintained in a transverse direction or substantially transverse direction.

In a more preferred embodiment, at least part of the cutout 653 extends to the second body 652, that is, at least part of the second body 652 is formed with a groove that is formed as part of the cutout 653.

At this time, the inner diameter of the transfer passage is smaller than the projected length of the slit 653 on the cross section of the transfer passage, thereby enabling the slit 653 to have the maximized foam radiation area.

In the present disclosure, as shown in fig. 7, the transfer passage includes a circular passage outlet, and a projection center of the slit 653 at the circular passage outlet passes through a center of the circular passage outlet, so that the slit 653 is centrally disposed at the first body 651 and the second body 652.

The angle of the fan-shaped radiating surface is 10 deg. -160 deg. when the foam generator 800 is operated with a gas flow of 8.6L/min and a detergent flow of 65 ml/min.

The diameter of the conveying channel is 2-3mm, and correspondingly, the diameter of the hemispherical buffer cavity is the same as that of the conveying channel. At this time, the width W of the slit 653 is 0.2-0.4mm, that is, the width of the slit 653 is between 6% -20% of the diameter of the conveying path.

And the depth L of the portion of the cutout 653 located in the second body 652 is 0.1-0.3mm; that is, the portion of the cutout 653 located within the second body 652 has a depth that is between 3% -15% of the diameter of the delivery channel.

As shown in fig. 6 and 7, the nozzle 650 further includes a first mounting portion 654, and the first mounting portion 654 is used to connect with the foam generator 800; in one embodiment, the first mounting portion 654 is a plurality of annular barb-like structures formed on the outer surface of the second body 652, at which time the connection of the nozzle 650 to the foam supply line may be accomplished by inserting the second body 652 inside the foam supply line, at which time the other end of the foam supply line is connected to the foam outlet of the foam generator 800, whereby the foam generator 800 and the nozzle 650 together constitute a foam dispenser configured to dispense foam to at least one of the stirring element and/or the floor surface to be cleaned.

More preferably, the nozzle 650 further includes a second mounting portion 655, the second mounting portion 655 being formed as an ear extending outwardly from an outer surface of the second body 652, and accordingly, the second mounting portion 655 being used to secure the nozzle 650 to the cover 640 of the floor brush assembly 600.

Referring again to fig. 5, as the floor brush assembly 600 moves along the surface (plane) to be cleaned, the nozzle 650 is perpendicular or substantially perpendicular to the surface to be cleaned, in other words, the plane in which the cutout 653 is located is perpendicular or substantially perpendicular to the surface to be cleaned, and preferably the distance between the nozzle 650 and the surface to be cleaned is substantially 15-30mm, which may vary depending on the length of the stirring member 630.

Fig. 8 illustrates an internal structural schematic of a floor brush assembly according to one embodiment of the present disclosure.

As shown in fig. 8, the floor brush assembly may further include a foaming agent storage 670, the foaming agent storage 670 storing a foaming agent, and further, the foaming agent stored in the foaming agent storage 670 can be mixed with air by the above-mentioned foam generator 800 to generate a cleaning foam. In one embodiment, the foaming agent may be a cleaning agent or a liquid with a surfactant added thereto.

The frame 610 further defines a receiving chamber within which the foaming agent storage 670 is disposed. On the other hand, in the present disclosure, the foaming agent storage 670 may be provided to the frame 200.

As shown in fig. 8, a seal box 694 is further disposed in the accommodating chamber of the floor brush assembly 600, and electronic components such as a control circuit board may be disposed in the seal box 694, thereby facilitating connection of the control circuit board with the foam generator 800, the cleaning liquid pump 680 and the defoamer pump 693.

As shown in fig. 9, the foaming agent storage 670 is connected to the nozzle 650 through the foam generator 800, thereby causing the foaming agent stored in the foaming agent storage 670 to be supplied to the nozzle 650 and ejected from the nozzle 650 after generating cleaning foam via the foam generator.

More preferably, the floor brush assembly 600 may further include a cleaning liquid pump 680, the cleaning liquid storage part 300 is connected to the cleaning liquid pump 680, the cleaning liquid pump 680 is connected to the water outlet bar 690 (may also be referred to as a liquid dispenser), thereby enabling the cleaning liquid stored in the cleaning liquid storage part 300 to be supplied to the water outlet bar 690 after being pressurized by the cleaning liquid pump 680, and the pressurized cleaning liquid can be sprayed out of the water outlet bar 690, thereby providing the cleaning liquid to the stirring member 630 and/or the surface to be cleaned near the stirring member 630.

In the present disclosure, the water outlet bar 690 is disposed along the length direction of the stirring member 630 and is provided with at least one water outlet; preferably, the number of the water outlets is plural, and the water outlets are arranged in at least one row along the length direction of the stirring member 630. In the present disclosure, the water outlet bar 690 may be disposed at the rear of the stirring member 630, whereby when the stirring member 630 rotates and cleans the surface to be cleaned, the cleaning liquid can be more sufficiently wetted and dispersed on the surface of the stirring member 630 to improve the cleaning effect of the surface to be cleaned.

As shown in fig. 4, the floor brush assembly 600 may further include a wiper strip 691, where the wiper strip 691 is disposed on the frame 610 and is located below the frame 610. Preferably, the wiper strip 691 is disposed at the rear of the contact area of the stirring member 630 with the surface to be cleaned, so that the sewage, etc. on the surface to be cleaned can be collected in time and sucked into the recovery storage 400 through the suction nozzle 620.

In the present disclosure, the floor brush assembly 600 further includes a defoamer storage 692, the defoamer storage 692 for storing defoamer. That is, when the surface cleaning apparatus of the present disclosure is in use, a mixture of sewage, foam, air, etc. may enter the recovery storage section 400, and if the foam is not timely removed, the foam may accumulate in the recovery storage section 400, even overflow to the outside of the recovery storage section 400, affecting the service life of the suction device; accordingly, in the present disclosure, by the antifoaming agent provided by the antifoaming agent storage part 692, the surface tension of the liquid in the recovery storage part 400 can be reduced, the amount of foam in the recovery storage part 400 can be reduced, and even the foam in the recovery storage part 400 can be completely removed.

The defoamer storage part 692 can be provided in the housing chamber of the frame portion 610, and in the present disclosure, by providing the foaming agent storage part 670 and the defoamer storage part 692 in the frame portion 610, the center of gravity of the entire surface cleaning apparatus can be lowered, which is convenient for a user to operate the surface cleaning apparatus.

In the present disclosure, the defoamer storage part 692 is connected to a defoamer pump 693, and the defoamer pump 693 can supply the defoamer to the recovery piping 401 or the suction nozzle 620, and the like, so that the defoamer can be transported to the recovery storage part 400 by the action of suction. On the other hand, the defoamer pump 693 may also be directly connected to the recovery storage 400 to directly supply defoamer to the recovery storage 400.

Of course, the defoamer storage 692 may be directly connected to the recovery line 401 or the suction nozzle 620 via a defoamer line.

As shown in fig. 10, the frame 610 forms the suction nozzle 620. The suction nozzle 620 includes a transition chamber having one end formed in an open shape, whereby a mixture of sewage, gas, foam, etc. enters the transition chamber through the opening of the transition chamber; accordingly, the other end of the transition chamber is connected to a recovery line 401, so that a mixture of sewage, gas, foam, etc. can be recovered through the recovery line 401.

In one embodiment, the cross-section of the transition chamber (i.e., the cross-section taken perpendicular to the direction of flow of the mixture) may be square in shape and may be tapered in area to facilitate the connection between the transition chamber and the recovery line 401.

The side wall of the suction nozzle 620 is provided with a pipe connection portion 621, the defoamer storage portion 692 is connected to one end of a defoamer pipe, and the other end of the defoamer pipe is connected between the pipe connection portion 621, thereby enabling the suction nozzle 620 to be in fluid communication with the defoamer storage portion 692. In a preferred embodiment, the pipe connection 621 is located on the upper wall surface of the suction nozzle 620, thereby facilitating the installation and removal of the defoamer pipe.

At this time, the above-described defoamer pump 693 can be provided to the defoamer line so that the defoamer is pumped out from the defoamer storage 692 and then discharged to the suction nozzle 620 by the positive pressure.

In another embodiment, the defoamer pump 693 is not provided on the defoamer line, but the defoamer in the defoamer storage 692 is sucked into the suction nozzle 620 by the negative pressure suction in the suction nozzle 620. Accordingly, an electromagnetic valve is provided on the defoamer line, and is opened when negative pressure is generated in the suction nozzle 620.

In the present disclosure, the defoamer storage part 692 further includes an open hole to allow air to enter the defoamer storage part 692 through the open hole, so that the pressure difference between the inside and the outside of the defoamer storage part 692 can be balanced, thereby facilitating the suction of the defoamer pump 693 or facilitating the suction of the negative pressure.

The floor brush assembly of the present disclosure further includes a controller, which may be an electronic component disposed on the control circuit board. Wherein the controller is configured to dispense the defoamer into the recovery storage section before the mixture reaches the recovery storage section, thereby enabling the foam to be eliminated as soon as possible when the foam is pumped into the recovery storage section.

That is, when the surface to be cleaned is cleaned by the foam, a large amount of foam is filled in the recovery storage 400 due to the presence of the surfactant in the foam, which affects the water level detection of the recovery storage 400 on the one hand and the gas-solid-liquid separation function of the recovery storage 400 on the other hand.

Accordingly, if the defoamer is present in the recovery storage section 400, it is not necessary to add the defoamer to the recovery storage section 400 or to add a small amount of the defoamer. At this time, it is possible to detach the activation signal as the addition of the antifoaming agent from the surface-cleaning apparatus by recovering the storage part 400. For example, when the recovery storage 400 is detached from the surface cleaning apparatus, a user may pour out the contaminated water therein and clean the recovery storage 400; when the cleaned recovery storage section 400 is again attached to the surface cleaning apparatus, it is necessary to add an antifoaming agent to the inside of the recovery storage section 400 as soon as possible.

During a cleaning operation, the controller can control the defoamer pump or solenoid valve to be started at least once, and each start-up operation is performed for a predetermined time, for example, 1 second, so that the addition of the defoamer can be completed.

The structure of the foam generator will be described in detail with reference to the accompanying drawings.

As illustrated in fig. 11, the present disclosure provides a foam generator 800 that includes a gas pump 810, a liquid pump 820, and a mixing chamber 830.

The gas pump 810 communicates with the atmosphere to directly draw gas from the atmosphere and is capable of providing gas, such as a high flow rate of gas, to the mixing chamber 830.

In one embodiment, the gas pump 810 can be driven by the driving device 840 to generate a high flow rate of gas, that is, the driving device 840 is in transmission connection with the gas pump 810, and when the driving device 840 is in a rotating state, the gas pump 810 can be in an operating state, and continuously output a high flow rate of gas outwards.

The gas pump 810 may be a centrifugal pump, a plunger pump, a vane pump, a diaphragm pump, or the like, and the type of the gas pump 810 is not limited in the present disclosure, as long as the gas pump 810 can generate high-pressure gas.

As shown in fig. 12 and 13, the liquid pump 820 communicates with a supply tank for supplying liquid.

The liquid pump 820 is preferably a peristaltic pump; fig. 13 shows a configuration of a shaped peristaltic pump in which the squeeze assembly 821 is capable of being driven to rotate, squeezing the flexible tube 822 causes the flexible tube 822 to deform and effect fluid transport within the flexible tube 822 as the squeeze assembly 821 rotates.

Those skilled in the art will appreciate that peristaltic pumps are but one preferred implementation; other liquid pumps, such as vane pumps, plunger pumps, etc., may also be selected in the present disclosure.

As shown in fig. 11, the gas pump 810 and the liquid pump 820 are connected to the mixing chamber 830, and the mixing chamber 830 is configured to receive the gas generated by the gas pump 810 and the liquid generated by the liquid pump 820; and causes the gas and liquid to mix in the mixing chamber 830 to create a foam.

In one specific configuration, as shown in fig. 14, the mixing chamber 830 includes: the first inlet 831, the second inlet 832, and the mixing chamber 833.

The first inlet 831 is used for entering liquid; in the present disclosure, the first inlet 831 may be connected to the liquid pump 820; the second inlet 832 is for the inlet gas; for example, the second inlet 832 is connected to a gas pump. The mixing chamber 833 is configured to mix the liquid and the gas, wherein a predetermined included angle is formed between the first inlet 831 and the second inlet 832; in a preferred embodiment, the first and second inlets 831, 832 are vertically distributed, such as shown in fig. 14, the first inlet 831 being substantially horizontal and the second inlet 832 being substantially vertical, at which point the second inlet 832 is perpendicular or substantially perpendicular to the flow direction of the liquid in the mixing chamber 833, such an arrangement being more advantageous for mixing gas in the liquid, thereby forming a rich foam.

In a preferred embodiment, the mixing chamber 830 further includes a cylindrical filter 834, the cylindrical filter 834 including one or more elongated filter apertures through which the mixture of gas and liquid is delivered to and discharged from the foam outlet.

In the present disclosure, the speed of the foam output can be controlled by adjusting the rotational speed of the drive device.

The foam generator 800 of the present disclosure further comprises a driving device 840, the driving device 840 being configured to drive the gas pump 810 and the liquid pump 820, and thereby being capable of putting the gas pump 810 and the liquid pump 820 into operation. In a preferred embodiment, the gas pump 810 and the liquid pump 820 are driven by the same driving device 840, and the gas pump 810 and the liquid pump 820 are located on the same side of the driving device 840.

Therefore, the problem that the solution is not adhered to water can be solved by driving the gas pump 810 and the liquid pump 820 through the driving device 840 and the peristaltic pump, and the diaphragm pump for the gas pump realizes small volume and large flow, and the whole pump is small in volume and low in cost. Also, by the separate arrangement of the gas pump 810 and the liquid pump 820, the flow rate of the fluid can be significantly improved, so that the foam generator of the present disclosure significantly improves the flow rate of the fluid.

As shown in fig. 15, the control method of the surface cleaning apparatus of the present disclosure can control the surface cleaning apparatus described above, so that a cleaning operation of a surface to be cleaned can be achieved.

Specifically, the control method of the surface cleaning apparatus of the present disclosure includes: judging whether the surface cleaning equipment is started or not, and starting the surface cleaning equipment when the surface cleaning equipment is not started; when the surface cleaning apparatus has been activated, the surface cleaning apparatus obtains a surface foam treatment signal to be cleaned; self-checking the surface cleaning equipment to obtain the current state of the surface cleaning equipment; judging whether the surface cleaning equipment meets preset conditions according to the current state of the surface cleaning equipment; and allowing the surface to be cleaned to be foam-treated when the surface cleaning apparatus satisfies a preset condition; wherein the surface cleaning apparatus is determined to satisfy the preset condition when the following condition is satisfied: the amount of the foaming agent in the foaming agent storage part is equal to or greater than a preset value.

The method of treatment of the surface cleaning apparatus will be described in detail below.

Since the control method of the surface cleaning apparatus of the present disclosure is used for cleaning work, it is required that the surface cleaning apparatus be in an operating state. In particular, activation of the surface cleaning apparatus may be achieved by triggering a switch button provided on the handle portion 100. Those skilled in the art will appreciate that when the surface cleaning apparatus is in an unactuated state, actuation of the surface cleaning apparatus may be accomplished by pressing or the like to trigger the switch button; accordingly, when the surface cleaning apparatus is in the activated state, the switch button is triggered by pressing or the like, so that shutdown of the surface cleaning apparatus can be achieved.

When the surface cleaning apparatus has been activated, the surface cleaning apparatus obtains a surface foam treatment signal to be cleaned. In the present disclosure, the handle portion 100 of the surface cleaning apparatus may be provided with a supply foam button which is triggered when the surface cleaning apparatus is in operation, then a surface foam treatment signal to be cleaned is generated.

Of course, the surface foam treatment signal to be cleaned may also be generated by operating APP or the like.

After the foam processing signal of the surface to be cleaned is generated, performing self-inspection on the surface cleaning equipment to obtain the current state of the surface cleaning equipment; judging whether the surface cleaning equipment meets preset conditions according to the current state of the surface cleaning equipment; when the surface cleaning apparatus satisfies the preset condition, the foam treatment is allowed to be performed on the surface to be cleaned.

More specifically: when the following conditions are satisfied, it is determined that the surface cleaning apparatus satisfies the preset conditions: the electric quantity of the surface cleaning device is larger than a preset value, the cleaning liquid storage part 300 of the surface cleaning device is positioned on the surface cleaning device, the recycling storage part of the surface cleaning device is positioned on the surface cleaning device, the foaming agent storage part is positioned in the surface cleaning device and the foaming agent storage part, the amount of the foaming agent in the foaming agent storage part is larger than or equal to the preset value, and the amount of the liquid in the recycling storage part is smaller than or equal to a certain preset value.

In the present disclosure, since it is necessary to control the rotation of the stirring member 630 and also to supply foam, suck sewage, and the like when cleaning the surface to be cleaned, it is necessary to maintain the electric quantity of the surface cleaning apparatus to be greater than a preset value (e.g., 20%); on the other hand, when the electric quantity of the surface cleaning apparatus is smaller than the preset value, the user is prompted to charge the surface cleaning apparatus. When the surface cleaning apparatus is charged and the amount of power of the surface cleaning apparatus is greater than a preset value, the supply foam button may be triggered again to generate a surface foam treatment signal to be cleaned and initiate a request for surface foam treatment to be cleaned.

Since it is necessary to supply the cleaning liquid to the stirring member 630 or the cleaning foam or the like to the stirring member 630 when cleaning the surface to be cleaned, it is necessary to secure that the cleaning liquid storage part 300 of the surface cleaning apparatus is located in the surface cleaning apparatus; on the other hand, when the cleaning liquid storage part 300 is not located in the surface cleaning apparatus, the user is prompted to mount the cleaning liquid storage part 300 to the frame part 200 of the surface cleaning apparatus. When the user installs the cleaning liquid storage part 300 to the surface cleaning apparatus, the supply foam button may be triggered again to generate a surface foam treatment signal to be cleaned and initiate a request for surface foam treatment to be cleaned.

On the other hand, when the cleaning liquid storage section 300 of the surface cleaning apparatus is located in the surface cleaning apparatus, it is also necessary to detect the amount of the cleaning liquid in the cleaning liquid storage section 300 and determine whether the amount of the cleaning liquid is greater than a preset value. Specifically, determining that the surface cleaning apparatus satisfies the preset condition further includes: the amount of the cleaning liquid in the cleaning liquid storage part 300 is greater than a preset value (e.g., 20%); when the amount of the cleaning liquid in the cleaning liquid storage part 300 is equal to or less than a preset value, the user is reminded to add the cleaning liquid into the cleaning liquid storage part 300, and after the cleaning liquid is added and the amount of the cleaning liquid is greater than the preset value, the foam supply button can be triggered again to generate a surface foam treatment signal to be cleaned and initiate a request for surface foam treatment to be cleaned.

Since it is necessary to recover dirt, liquid, and the like after self-cleaning to the recovery storage section 400 when cleaning the surface to be cleaned, it is necessary to secure that the recovery storage section 400 is located in the surface cleaning apparatus. On the other hand, when the recovery storage section 400 is not located in the surface cleaning apparatus, the user is prompted to mount the recovery storage section 400 to the frame section 200 of the surface cleaning apparatus. When the user installs the recovery storage section 400 to the surface cleaning apparatus, the supply foam button may be triggered again to generate a surface foam treatment signal to be cleaned and initiate a request for surface foam treatment to be cleaned.

On the other hand, when the recovery storage section 400 of the surface cleaning apparatus is located in the surface cleaning apparatus, it is also necessary to detect the amount of liquid in the recovery storage section 400 and determine whether the amount of cleaning liquid is equal to or less than a certain preset value (for example, 50%). That is, when the amount of liquid in the recovery storage portion 400 is small, the suction dirt and liquid can be satisfied. When the amount of liquid in the recovery storage portion 400 is greater than a certain preset value, the user is reminded to clean the recovery storage portion 400 and pour out the liquid in the recovery storage portion 400. When the user clears the recovery storage section 400 and the amount of liquid in the recovery storage section 400 is equal to or less than a certain preset value, the foam supply button may be triggered again to generate a surface foam treatment signal to be cleaned and initiate a request for surface foam treatment to be cleaned.

In the present disclosure, since it is necessary to supply cleaning foam to the stirring member 630 when cleaning the surface to be cleaned, it is necessary to secure that the foaming agent storing part 670 is located at the surface cleaning apparatus; on the other hand, when the foaming agent storing part 670 is not located at the surface cleaning apparatus, the user is prompted to mount the foaming agent storing part 670 to the surface cleaning apparatus. When the user installs the foaming agent reservoir 670 to the surface cleaning apparatus, the supply foam button may be triggered again to generate a surface foam treatment signal to be cleaned and initiate a request for surface foam treatment to be cleaned.

On the other hand, when the blowing agent storage section 670 of the surface cleaning apparatus is located in the surface cleaning apparatus, it is also necessary to detect the amount of the blowing agent in the blowing agent storage section 670 and determine whether the amount of the blowing agent is greater than a preset value (20%). When the amount of the foaming agent in the foaming agent storage 670 is less than or equal to a preset value, the user is reminded to add the foaming agent into the foaming agent storage 670, and after the foaming agent is added and the amount of the foaming agent is greater than the preset value, the foam supply button can be triggered again to generate a surface foam treatment signal to be cleaned, and a request for surface foam treatment to be cleaned is started.

In the present disclosure, when providing foam to a surface to be cleaned, the nozzle can spray the cleaning foam vertically or substantially vertically to the surface to be cleaned, so that the cleaning foam can be accurately provided to the front of the stirring member and to the middle region which can be located at the stirring member, thereby improving the use efficiency of the cleaning foam and reducing the foam residue on the surface to be cleaned.

Specifically, the foaming treatment of the surface to be cleaned comprises: controlling a foam generator of a surface cleaning apparatus to provide cleaning foam to a surface to be cleaned at a predetermined flow rate for a first predetermined time, and causing at least a portion of the cleaning foam to be located on the surface to be cleaned in front of a stirring member of the surface cleaning apparatus; and controlling the stirring member to rotate while the surface cleaning apparatus moves forward, rolling up the liquid foam of the surface to be cleaned by stirring of the stirring member, and transporting the mixture of air, liquid and liquid foam into the recovery storage section by the suction nozzle of the surface cleaning apparatus. Therefore, the control method of the surface cleaning device disclosed by the invention realizes foam cleaning of the surface to be cleaned, and improves the cleaning effect of the surface to be cleaned.

On the other hand, after the mixture of air, liquid and liquid foam is conveyed to the recovery storage part, a large amount of foam exists in the recovery storage part, and if the foam is not removed, the operation of the liquid level meter in the recovery storage part is affected, namely, the liquid level meter can be caused to be erroneously full of water. In this case, the recovery storage unit includes a level gauge for detecting the amount of the dirty liquid in the recovery storage unit.

Based on this, in one embodiment, as shown in fig. 16, when the surface cleaning apparatus of the present disclosure performs a job of cleaning a surface to be cleaned, it is necessary to add an antifoaming agent into the recovery storage section so as to be able to break down as soon as possible into a liquid when the cleaning foam is recovered into the recovery storage section.

Specifically, in one cleaning cycle, controlling the defoamer storage part of the surface cleaning device to provide the inhibitor for the fourth preset time to the recovery storage part at a preset flow rate, wherein the first preset time is longer than the fourth preset time, and the first preset time is longer than the fourth preset time; wherein the cleaning cycle is detached from the surface cleaning apparatus as a split point with the recovery storage.

In the present disclosure, by setting the fourth preset time to be smaller than the first preset time, the amount of the defoaming agent added, that is, a small amount of the defoaming agent can be satisfied to eliminate the foam in the recovery storage portion or reduce the amount of the foam in the recovery storage portion, thereby reducing the replacement frequency of the defoaming agent storage portion.

Since the presence of an appropriate amount of defoaming agent in the recovery storage portion can prevent the inside of the recovery storage portion from being foamed, or even if a small amount of foam is present, the operation of the liquid level meter is not affected, and accordingly, the foam does not overflow to the outside of the recovery storage portion, the defoaming agent is added to the recovery storage portion once in one cleaning cycle.

Specifically, the disassembly of the recovery storage unit as the dividing point means: installing the recovery storage section to calculate the start of a cleaning cycle, and removing the recovery storage section to indicate the end of a cleaning cycle; and so on.

In other words, since it is impossible to determine whether or not the antifoaming agent is present in the recovery storage section, it is possible to determine that the antifoaming agent is not present in the recovery storage section by removing the recovery storage section and cleaning the recovery storage section, and accordingly, the antifoaming agent is newly added when the recovery storage section is mounted to the surface cleaning apparatus.

In another implementation form, under predetermined conditions, providing an antifoaming agent to the recovery storage section; the predetermined condition includes: the suction means of the surface cleaning apparatus is started after a shut down. That is, when the suction device is in operation, the recovery storage portion is located in the surface cleaning apparatus, and accordingly, after the suction device is stopped, no matter whether the recovery storage portion is cleaned or not, the defoaming agent is added to the recovery storage portion at the next time of starting the suction device, so that the situation that the defoaming agent is not present in the recovery storage portion can be avoided.

In a preferred embodiment, in a third preset time after the foam generator is started, power supply to the liquid level meter is stopped, so that a detection signal of the liquid level meter is not received any more, the liquid level meter is shielded for the third preset time, and false alarm of the liquid level meter is prevented.

The third preset time is longer than the first preset time; however, in the present disclosure, the third preset time is not too large, and needs to be adjusted according to the flow rate of the cleaning liquid supplied during the cleaning, for example, the third preset time may be set to about 20 seconds.

After the first preset time, the driving device of the foam generator is controlled to rotate reversely for the second preset time, so that the nozzle and the cleaning foam in the foam supply pipeline connected with the nozzle can be pumped back, the cleaning foam is prevented from flowing out of the nozzle again, and the use experience of a user is good.

After the first preset time, including after the surface cleaning apparatus is stopped, that is, even after the surface cleaning apparatus is stopped, the cleaning foam needs to be pumped back, so that a large amount of cleaning foam is no longer present in the foam supply line, preventing the cleaning foam from solidifying in the foam supply line and the nozzle, and blocking the foam supply line and the nozzle.

In the present disclosure, the cleaning liquid can be supplied to the surface to be cleaned or the stirring member while the cleaning foam is supplied to the surface to be cleaned. More preferably, the cleaning liquid pump supplies cleaning liquid to the stirring member at a first flow rate before the first preset time; after the first preset time is started, the cleaning liquid pump supplies cleaning liquid to the stirring piece at a second flow, and the first flow is smaller than the second flow, so that when cleaning foam is supplied, the supply amount of the cleaning liquid is increased, and the situation that the old people slide to the like due to residual foam on the surface to be cleaned is prevented.

In a preferred embodiment, the brush assembly 600 may further include a foam flow control element, which may be a single chip or a DSP or other embedded processor. The foam flow control element of the present disclosure is arranged to: when the surface cleaning apparatus is controlled to move forward, the foam flow control element allows the foam generated by the foam generator 800 to be delivered to the nozzle 650; the foam flow control element does not allow the foam generated by the foam generator 800 to be delivered to the nozzle 650 when the surface cleaning apparatus is controlled to move backward, thereby achieving unidirectional supply of cleaning foam, that is, supplying cleaning foam to enhance the cleaning effect of the surface to be cleaned when the surface cleaning apparatus moves forward and cleans the surface to be cleaned; when the surface cleaning apparatus moves backward, the supply of cleaning foam may be stopped at this time, thereby effectively avoiding the residue of cleaning foam on the floor.

In the present disclosure, the foam flow control element may be implemented by the same processor as the controller, but can of course also be implemented by a different processor. Accordingly, when the foam flow control element and the controller are implemented by different processors, the foam flow control element and the controller can be interconnected to be able to communicate control instructions and data with each other.

The surface cleaning apparatus further includes a rolling wheel 695 and a displacement sensor, the rolling wheel 695 being located at the rear side of the stirring member 630, the rolling wheel 695 rolling over the surface to be cleaned when the surface cleaning apparatus is operated. In the present disclosure, the scroll wheel 695 may be configured as a passive wheel, i.e. when a user applies a forward force to the surface cleaning apparatus, the surface cleaning apparatus is pushed forward, in which case the scroll wheel 695 passively rotates. Of course, the rolling wheel 695 may also be provided as a driving wheel, i.e. the rolling wheel 695 can be driven to rotate by a motor, whereby assistance of the forward and backward movement of the surface cleaning apparatus is achieved, so that it is possible to operate the surface cleaning apparatus more effort-saving.

The displacement sensor is used for detecting the movement direction of the surface cleaning equipment; in a specific embodiment, the displacement sensor comprises an encoder for detecting the direction of rotation of the scroll wheel 695 and obtaining the direction of movement of the surface cleaning apparatus from the direction of rotation of the scroll wheel 695.

In the present disclosure, the width of the foam sprayed from the nozzle 650 toward the surface to be cleaned in the lateral direction is about half the length of the stirring member 630 in the lateral direction. Also, more preferably, the foam sprayed from the nozzle 650 toward the surface to be cleaned is located at a position of the middle of the stirring member 630 in the lateral direction, in other words, the center point of the foam sprayed from the nozzle 650 toward the surface to be cleaned is aligned with the center point of the stirring member 630 in the front-rear direction.

In a preferred embodiment, the liquid dispenser (the water bar 690), the cover 640 and the nozzle 650 are formed as one unit, so that the liquid dispenser and the nozzle 650 can be removed simultaneously when the cover 640 is removed.

In the description of the present specification, reference to the terms "one embodiment/manner," "some embodiments/manner," "example," "a particular example," "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/manner or example is included in at least one embodiment/manner or example of the application. In this specification, the schematic representations of the above terms are not necessarily for the same embodiment/manner or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/modes or examples described in this specification and the features of the various embodiments/modes or examples can be combined and combined by persons skilled in the art without contradiction.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

It will be appreciated by those skilled in the art that the above-described embodiments are merely for clarity of illustration of the disclosure, and are not intended to limit the scope of the disclosure. Other variations or modifications will be apparent to persons skilled in the art from the foregoing disclosure, and such variations or modifications are intended to be within the scope of the present disclosure.

Claims

1. A method of controlling a surface cleaning apparatus, comprising:

2. The control method of a surface cleaning apparatus of claim 1, wherein the defoamer storage section is connected to the suction nozzle through a defoamer line, and the defoamer stored in the defoamer storage section is discharged to the suction nozzle through positive pressure.

3. The method of controlling a surface cleaning apparatus of claim 2, wherein a defoamer pump is provided on the defoamer line, the defoamer pump being operated for a preset time when the interior of the suction nozzle is in a negative pressure environment.

4. The control method of a surface cleaning apparatus of claim 1, wherein the defoamer storage section is connected to the suction nozzle through a defoamer line, and the defoamer stored in the defoamer storage section is discharged to the suction nozzle through negative pressure suction.

5. The method of controlling a surface cleaning apparatus of claim 4 wherein the defoamer line is provided with a solenoid valve that opens for a predetermined time when the interior of the suction nozzle is in a negative pressure environment.

6. The control method of a surface cleaning apparatus according to claim 1, wherein the surface cleaning apparatus includes a cleaning liquid storage portion and a cleaning liquid pump connected to the cleaning liquid storage portion so as to supply the cleaning liquid to the stirring member while stirring by the stirring member.

7. The method of controlling a surface cleaning apparatus of claim 6 wherein the cleaning liquid pump provides cleaning liquid to the agitator at a first flow rate prior to the first preset time; after the first preset time begins, the cleaning liquid pump supplies cleaning liquid to the stirring piece at a second flow rate, wherein the first flow rate is smaller than the second flow rate.

8. The method of controlling a surface cleaning apparatus of claim 1 wherein the recovery storage section includes a level gauge for detecting an amount of soiled liquid within the recovery storage section.

9. The method of controlling a surface cleaning apparatus of claim 8 wherein power to the level gauge is stopped for a third predetermined time after the foam generator is activated.

10. The method of controlling a surface cleaning apparatus of claim 9 wherein the third predetermined time is greater than the first predetermined time.