CN220109689U - Surface cleaning apparatus - Google Patents

Abstract

The present disclosure provides a surface cleaning apparatus comprising: an upright assembly, a floor brush assembly; a working gas circuit; a recovery storage unit; a suction device; a fluid delivery system; wherein the fluid delivery system comprises: a cleaning liquid storage section for storing a cleaning liquid; the air pump is communicated with the atmosphere and is used for providing gas; a liquid pump in communication with the cleaning liquid reservoir for providing a cleaning liquid; and the air pump and the liquid pump are connected to the mixing cavity, so that the mixing cavity can receive the air provided by the air pump and the cleaning liquid provided by the liquid pump, and the air and the cleaning liquid are mixed in the mixing cavity and the air-liquid mixture is conveyed to the fluid nozzle.

Description

Surface cleaning apparatus

Technical Field

The present disclosure relates to 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.

The prior art wet surface cleaners are limited in tank capacity during cleaning and require multiple water additions to complete a cleaning process. And because the water yield of the wet surface cleaner is smaller, the water is obviously not uniformly discharged at a plurality of water outlets.

Disclosure of Invention

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

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

the vertical component is provided with a plurality of vertical components,

a floor brush assembly pivotally mounted to the upright assembly and adapted to move over a surface to be cleaned; the floor brush assembly comprises a stirring piece, a suction nozzle and a fluid nozzle, wherein the surface to be cleaned is cleaned or the stirring piece is self-cleaned through rotation of the stirring piece; the suction nozzle is arranged at the rear of the stirring piece; and defining, at least in part, a mixing chamber by the suction nozzle, the mixing member being removably mounted within the mixing chamber; the fluid nozzle is disposed proximate the stirring element and configured to dispense a gas-liquid mixture to the stirring element;

a working air path at least partially through the upright assembly and the ground brush assembly;

a recovery storage portion defining a portion of the working gas path;

a suction device defining a portion of the working gas path; and

a fluid delivery system for generating a gas-liquid mixture and providing the gas-liquid mixture to the stirring element;

wherein the fluid delivery system comprises:

a cleaning liquid storage section for storing a cleaning liquid;

the air pump is communicated with the atmosphere and is used for providing gas;

a liquid pump in communication with the cleaning liquid reservoir for providing a cleaning liquid;

and the air pump and the liquid pump are connected to the mixing cavity, so that the mixing cavity can receive the air provided by the air pump and the cleaning liquid provided by the liquid pump, and the air and the cleaning liquid are mixed in the mixing cavity and the air-liquid mixture is conveyed to the fluid nozzle.

According to at least one embodiment of the present disclosure, the air pump and the liquid pump are driven by the same driving means.

According to a surface cleaning apparatus of at least one embodiment of the present disclosure, the air pump and the liquid pump are located on the same side of the drive means.

According to a surface cleaning apparatus of at least one embodiment of the present disclosure, the air pump is remote from the drive means than the liquid pump.

According to at least one embodiment of the present disclosure, the air pump and the liquid pump are located on both sides of the driving means.

According to the surface cleaning apparatus of at least one embodiment of the present disclosure, the driving device is a double-ended motor, an output shaft of one end of the double-ended motor is used for driving the liquid pump, and an output shaft of the other end of the double-ended motor is used for driving the air pump.

A surface cleaning apparatus in accordance with at least one embodiment of the present disclosure, the fluid delivery system further comprising: and a flow controller for controlling the flow rate of the gas supplied from the air pump and for controlling the flow rate of the liquid supplied from the liquid pump.

A surface cleaning apparatus according to at least one embodiment of the present disclosure further comprises:

the stain detector is used for detecting the stain content of the fluid flowing through the working gas circuit and judging the stain degree of the surface to be cleaned according to the stain content of the fluid.

According to at least one embodiment of the present disclosure, the soil detector obtains a soil content of a fluid from a capacitance signal of the fluid, wherein a pumping rate of a cleaning liquid is increased and a pumping rate of a gas is maintained when the soil content in the fluid is high.

According to a surface cleaning apparatus of at least one embodiment of the present disclosure, the rotation axis of the stirring member is substantially parallel to the surface to be cleaned or substantially perpendicular to the surface to be cleaned.

In accordance with at least one embodiment of the present disclosure, the mixing chamber further comprises a cylindrical filter comprising one or more elongated filter apertures through which the mixture of gas and liquid is delivered to and ejected from the fluid nozzle.

A surface cleaning apparatus in accordance with at least one embodiment of the present disclosure, the liquid pump is a peristaltic pump.

A surface cleaning apparatus in accordance with at least one embodiment of the present disclosure, the mixing chamber comprising:

a first inlet for entering a liquid;

a second inlet for entering gas;

the mixing chamber is used for mixing the liquid and the gas, wherein a preset included angle is formed between the first inlet and the second inlet.

A surface cleaning apparatus in accordance with at least one embodiment of the present disclosure, the second inlet is perpendicular or substantially perpendicular to a flow direction along the liquid within the mixing chamber.

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 and 4 are schematic structural views of an upper case according to an embodiment of the present disclosure.

Fig. 5 is a schematic structural view of a part of the structure of a fluid delivery system according to one embodiment of the present disclosure.

Fig. 6 and 7 are schematic structural views of a liquid pump according to an embodiment of the present disclosure.

Fig. 8 is a schematic structural view of a mixing chamber according to one embodiment of the present disclosure.

Fig. 9 is a schematic structural view of a partial structure of a fluid delivery system 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

500 connection parts

600 floor brush assembly

610 housing module

611 matrix

612 upper shell

6121 first edge

6122 second edge

6123 receiving interface

613 fluid nozzle

620 moving wheel module

630 stirring piece

650 suction nozzle

810 air 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.

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

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.

The surface cleaning apparatus of the present disclosure may include an upright assembly, i.e. an upright portion of the surface cleaning apparatus when resting on a base station or tray, or when placed on a surface to be cleaned but not in operation, and a floor brush assembly. Accordingly, the floor brush assembly 600 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.

When the surface cleaning apparatus of the present disclosure is in use, i.e., in a working state of cleaning a surface to be cleaned, cleaning of the surface to be cleaned is achieved by movement of the floor brush assembly 600 over the surface to be cleaned, and at this time, the upright portion forms an included angle with the surface to be cleaned having an angle value smaller than 90 °.

The stand assembly may include a frame portion 200 and a handle portion 100; 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 indirectly fixed to the frame part 200.

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.

The surface cleaning apparatus of the present disclosure further includes a working air path at least partially passing through the upright assembly and the floor brush assembly 600, through which a mixture (fluid) of sewage (dirt) and gas can be recovered and stored in the recovery storage 400 when the surface cleaning apparatus of the present disclosure is in a working state of cleaning a surface to be cleaned; wherein the recovery storage section 400 defines a portion of the working gas path.

Accordingly, the surface cleaning apparatus further includes a suction device (not shown in the drawings), wherein the suction device is capable of generating a negative pressure and supplying the negative pressure to the recovery storage 400, thereby realizing a forced flow of gas and sewage within the working gas path. 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 a part of the outer surface of the surface cleaning apparatus, whereby the suction device defines a part of the above-described working gas path.

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.

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

As shown in fig. 2, the floor brush assembly 600 may include a housing module 610, a moving wheel module 620, a stirring element 630, and the like.

The housing module 610 is formed as at least a part of an outer housing of the floor brush assembly 600, and a front end of the housing module 610 forms a receiving space, that is, a stirring chamber described below. In a preferred embodiment, the housing module 610 includes a base 611 and an upper housing 612, the upper housing 612 being removably disposed to the base 611; at this time, the base 611 can be pivotably connected to the frame portion 200 described above.

Accordingly, the moving wheel module 620 may be rotatably disposed on the housing module 610, for example, the moving wheel module 620 may be rotatably disposed on the base 611 of the housing module 610.

Fig. 3 and 4 are schematic structural views of an upper case according to an embodiment of the present disclosure.

As shown in fig. 3 and 4, the upper housing 612 includes a first edge 6121 and a second edge 6122 distant from the first edge 6121, a continuous smooth inner surface is formed between the first edge 6121 and the second edge 6122, and the continuous smooth inner surface at least partially forms the accommodating space.

Forming a fluid nozzle 613 on an inner surface of the upper housing 612, the fluid nozzle 613 being disposed on a continuous smooth surface and configured to dispense a gas-liquid mixture to the stirring element 630; thus, by the position setting of the fluid nozzle 613, no dirt is accumulated at the position of the fluid nozzle 613, and the surface cleaning apparatus of the present disclosure does not need to unpick and wash the stirring member 630 when in actual use, improving the use experience of the user.

In another aspect, the floor brush assembly 600 may further include a suction nozzle 650, the suction nozzle 650 being capable of being formed on the housing module 610, such as on the base 611 or on the upper housing 612, or formed by the base 611 and the upper housing 612 together; more preferably, the suction nozzle 650 can be disposed at the rear of the stirring member 630.

In the present disclosure, the stirring member 630 may be formed in the form of a rolling brush, preferably, the stirring member 630 has fluff on an outer surface thereof, and the stirring member 630 is disposed in the receiving space of the housing module 610, thereby defining, at least in part, a stirring chamber by the suction nozzle 650, and accordingly, the stirring member 630 is detachably installed in the stirring chamber; and is capable of rotating.

As shown in fig. 3 and 4, the fluid nozzles 613 are provided in plurality, and preferably the fluid nozzles 613 are distributed in a substantially transverse direction on the continuously smooth inner surface, and the fluid nozzles 613 are close to the first edge, whereby the cleaning liquid supplied from the fluid nozzles 613 to the stirring member 630 has more time to become uniform when the surface to be cleaned is cleaned by the surface cleaning apparatus, so that the cleaning liquid can be dispersed more uniformly on the stirring member 630.

The upper housing 612 of the present disclosure further includes a receiving port 6123, where the receiving port 6123 is configured to receive the gas-liquid mixture delivered by the mixing chamber 830 and further deliver the gas-liquid mixture to the fluid nozzle 613.

As shown in fig. 4, a first flow guiding channel L1 and a second flow guiding channel L2 are arranged between the receiving interface 6123 and the fluid nozzle 613, and the size of the first flow guiding channel L1 is larger than that of the second flow guiding channel L2; preferably, the cross-sectional area of the first flow guide channel L1 is larger than the cross-sectional area of the second flow guide channel L2. Further, when the first flow guiding channel L1 and the second flow guiding channel L2 are both cylindrical channels, the diameter of the first flow guiding channel L1 is larger than the diameter of the second flow guiding channel L2.

Also, when the second guide flow path L2 is formed in a tapered flow path, for example, a conical flow path, the diameter of the first guide flow path L1 is larger than the maximum diameter of the second guide flow path L2, thereby enabling the cleaning liquid to smoothly flow in the first guide flow path L1 and the second guide flow path L2.

In the present disclosure, the end point of the second guide flow path L2 is formed as the fluid nozzle 613. Also, when the second guide flow path L2 is formed as a tapered flow path, the size of the second guide flow path L2 is gradually reduced in the flow direction of the liquid in the second guide flow path L2, that is, the fluid nozzle 613 is formed as a minimum size.

The surface cleaning apparatus of the present disclosure also includes a fluid delivery system for generating a gas-liquid mixture and providing the gas-liquid mixture to the stirring element 630.

In one embodiment, the fluid delivery system comprises: a cleaning liquid storage part 300, an air pump 810, a liquid pump 820, and a mixing chamber 830.

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.

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.

Fig. 5 is a schematic structural view of a part of the structure of a fluid delivery system according to one embodiment of the present disclosure. Fig. 6 and 7 are schematic structural views of a liquid pump according to an embodiment of the present disclosure. Fig. 8 is a schematic structural view of a mixing chamber according to one embodiment of the present disclosure.

As shown in fig. 5 to 8, the air pump 810 communicates with the atmosphere to directly suck the air from the atmosphere and is capable of supplying the air, for example, a high flow rate of the air, to the mixing chamber 830. In the present disclosure, the air pump 810 may be provided to the floor brush assembly 600.

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

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

The liquid pump 820 is in communication with the cleaning liquid storage part 300 for supplying cleaning liquid; the liquid pump 820 is preferably a peristaltic pump; the peristaltic pump may include a squeeze assembly 821 and a hose 822, the squeeze assembly 821 being capable of being driven in rotation, when the squeeze assembly 821 is rotated, squeezing the hose 822 deforms the hose 822 and effects fluid delivery within the hose 822. In the present disclosure, the liquid pump 820 can be provided to the floor brush assembly 600.

The air pump 810 and the liquid pump 820 are both connected to the mixing chamber 830, and enable the mixing chamber 830 to receive the air delivered by the air pump 810 and the liquid delivered by the liquid pump 820; and causes the gas and liquid to mix in the mixing chamber 830 to produce a gas-liquid mixture.

Specifically, 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 an air 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. 8, 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 gas-liquid mixture.

In a preferred embodiment, the mixing chamber 830 further comprises a cylindrical filter 834, the cylindrical filter 834 comprising one or more elongated filter holes through which the mixture of gas and liquid is delivered to and discharged from an outlet, wherein the outlet can be directly or indirectly connected to the receiving interface 6123 as described above, thereby effecting the delivery of the gas-liquid mixture.

The driving device 840 is used to drive the air pump 810 and the liquid pump 820, and thereby can put the air pump 810 and the liquid pump 820 in an operating state. In a preferred embodiment, the air pump 810 and the liquid pump 820 are driven by the same driving device 840, and the air pump 810 and the liquid pump 820 are located on the same side of the driving device 840, and more preferably, the air pump 810 is located farther from the driving device than the liquid pump 820.

Therefore, the problem that the solution is not adhered to water can be solved by driving the air pump 810 and the liquid pump 820 through the driving device 840 and arranging the peristaltic pump, and the diaphragm pump for the air pump realizes small volume and large flow, so that the whole pump is small in volume and low in cost.

Fig. 9 is a schematic structural view of a partial structure of a fluid delivery system according to another embodiment of the present disclosure.

As shown in fig. 9, the air pump 810 and the liquid pump 820 are located at both sides of the driving unit 840.

At this time, the driving device is a double-headed motor, an output shaft of one end of the double-headed motor is used for driving the liquid pump 820, and an output shaft of the other end of the double-headed motor is used for driving the air pump 810.

In this disclosure, the fluid delivery system further includes a flow controller, which may be a processor such as a single-chip microcomputer or a DSP, and is configured to control the flow rate of the gas provided by the air pump 810 and the flow rate of the liquid provided by the liquid pump 820.

For example, the flow controller may be connected to the driving device 840, and control the flow rate of the gas and the flow rate of the liquid by controlling the rotation speed of the driving device 840.

In one embodiment, the air pump 810 and the liquid pump 820 can be driven by separate driving means, for example, the air pump 810 is driven by a first motor, the liquid pump 820 is driven by a second motor, and the flow controller can be connected to the first motor and the second motor at this time, and independently control the flow rate of the gas and the flow rate of the liquid by controlling the rotational speeds of the first motor and the second motor, respectively.

In the present disclosure, when the air pump 810 and the liquid pump 820 are driven by the same driving device, a first throttle valve may be provided on an air intake pipe connected to the air pump 810, and the opening degree of the first throttle valve may be controlled so that the air pump 810 has different air flow rates at the same rotation speed. Similarly, a second throttle valve may be provided on the feed line connected to the liquid pump 820, and by controlling the opening of the second throttle valve, the liquid pump 810 may have different liquid flow rates at the same rotational speed. More preferably, the flow controller can also be used to control the opening of the first throttle valve and the second throttle valve.

The surface cleaning apparatus further comprises: a stain detector (not shown) for detecting the stain content of the fluid flowing through the working gas path and determining the stain level of the surface to be cleaned based on the stain content of the fluid.

Still further, the stain detector is connected to the flow controller and is capable of transmitting a signal of the degree of stain detected by the stain detector on the surface to be cleaned to the flow controller, preferably the stain detector obtains the stain content of the fluid from the capacitance signal of the fluid.

The flow controller also controls the air pump 810 and the liquid pump 820 according to the degree of dirt on the surface to be cleaned, for example, when the degree of dirt on the surface to be cleaned is large, i.e., when the surface to be cleaned is dirty, the amount of cleaning liquid supplied by the liquid pump 820 can be increased; at this time, the amount of the gas supplied from the gas pump 810 may not be changed or may be reduced; accordingly, when the surface to be cleaned is less soiled, i.e., the surface to be cleaned is cleaner, the amount of cleaning liquid supplied from the liquid pump 820 may be reduced, and at this time, the amount of gas supplied from the gas pump 810 may be unchanged or may be increased.

In one embodiment, as shown in FIG. 2, the axis of rotation of the agitator 630 is generally parallel to the surface to be cleaned. In another embodiment, the axis of rotation of the agitator 630 may also be substantially perpendicular to the surface to be cleaned.

The surface cleaning apparatus of the present disclosure is thereby able to provide water and air to the roller brush after mixing. As the solution is mixed with air, the water yield of the same volume is reduced, the purpose of increasing the water endurance is achieved, meanwhile, the self-cleaning effect of the stirring body is increased in the breaking process of bubbles, and dirt on the fluff is easier to separate from the rolling brush. Under the same water quantity, the volume of the water-vapor mixed solution is larger, and the whole waterway is easier to fill, so that the water outlet of each liquid nozzle is more uniform.

Moreover, the surface cleaning apparatus of the present disclosure can also adjust the ratio of water to gas simultaneously to maximize efficiency. When the ground is cleaner, the air proportion is increased, and the water consumption is reduced. When the floor is dirty, the water proportion is increased, and the cleaning effect is improved.

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 utility model. 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 utility model, 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 (14)

1. A surface cleaning apparatus comprising:

the vertical component is provided with a plurality of vertical components,

a floor brush assembly pivotally mounted to the upright assembly and adapted to move over a surface to be cleaned; the floor brush assembly comprises a stirring piece, a suction nozzle and a fluid nozzle, wherein the surface to be cleaned is cleaned or the stirring piece is self-cleaned through rotation of the stirring piece; the suction nozzle is arranged at the rear of the stirring piece; and defining, at least in part, a mixing chamber by the suction nozzle, the mixing member being removably mounted within the mixing chamber; the fluid nozzle is disposed proximate the stirring element and configured to dispense a gas-liquid mixture to the stirring element;

a working air path at least partially through the upright assembly and the ground brush assembly;

a recovery storage portion defining a portion of the working gas path;

a suction device defining a portion of the working gas path; and

a fluid delivery system for generating a gas-liquid mixture and providing the gas-liquid mixture to the stirring element;

wherein the fluid delivery system comprises:

a cleaning liquid storage section for storing a cleaning liquid;

the air pump is communicated with the atmosphere and is used for providing gas;

a liquid pump in communication with the cleaning liquid reservoir for providing a cleaning liquid;

and the air pump and the liquid pump are connected to the mixing cavity, so that the mixing cavity can receive the air provided by the air pump and the cleaning liquid provided by the liquid pump, and the air and the cleaning liquid are mixed in the mixing cavity and the air-liquid mixture is conveyed to the fluid nozzle.

2. The surface cleaning apparatus of claim 1, wherein the air pump and the liquid pump are driven by the same drive means.

3. The surface cleaning apparatus of claim 2 wherein the air pump and the liquid pump are located on the same side of the drive means.

4. A surface cleaning apparatus as claimed in claim 3, wherein the air pump is remote from the drive means than the liquid pump.

5. The surface cleaning apparatus of claim 2 wherein the air pump and liquid pump are located on either side of the drive means.

6. The surface cleaning apparatus of claim 5 wherein the drive means is a double-ended motor, an output shaft at one end of the double-ended motor for driving the liquid pump, and an output shaft at the other end of the double-ended motor for driving the air pump.

7. The surface cleaning apparatus of claim 1, wherein the fluid delivery system further comprises: and a flow controller for controlling the flow rate of the gas supplied from the air pump and for controlling the flow rate of the liquid supplied from the liquid pump.

8. The surface cleaning apparatus of claim 1, further comprising:

the stain detector is used for detecting the stain content of the fluid flowing through the working gas circuit and judging the stain degree of the surface to be cleaned according to the stain content of the fluid.

9. The surface cleaning apparatus of claim 8, wherein the soil detector obtains a soil content of the fluid based on the capacitance signal of the fluid, wherein the pumping rate of the cleaning liquid is increased and the pumping rate of the gas is maintained when the soil content in the fluid is higher.

10. The surface cleaning apparatus of claim 1, wherein the axis of rotation of the agitator is substantially parallel to the surface to be cleaned or substantially perpendicular to the surface to be cleaned.

11. The surface cleaning apparatus of claim 1, wherein the mixing chamber further comprises a cylindrical filter comprising one or more elongated filter apertures through which the mixture of gas and liquid is delivered to and ejected from the fluid nozzle.

12. The surface cleaning apparatus of claim 1, wherein the liquid pump is a peristaltic pump.

13. The surface cleaning apparatus of claim 1, wherein the mixing chamber comprises:

a first inlet for entering a liquid;

a second inlet for entering gas;

the mixing chamber is used for mixing the liquid and the gas, wherein a preset included angle is formed between the first inlet and the second inlet.

14. The surface cleaning apparatus of claim 13, wherein the second inlet is perpendicular or substantially perpendicular to a flow direction of the liquid along the mixing chamber.