CN219229784U - Foam generator and cleaning base - Google Patents

Abstract

The present disclosure provides a foam generator, comprising: the air pump is communicated with the atmosphere and is used for providing gas; a liquid pump in communication with the supply tank for providing a liquid; the air pump and the liquid pump are connected to the mixing cavity, and the mixing cavity can receive the gas generated by the air pump and the liquid generated by the liquid pump; and causing the gas and liquid to mix in the mixing chamber to produce a foam. The present disclosure also provides a cleaning base.

Description

Foam generator and cleaning base

Technical Field

The present disclosure relates to a foam generator and a cleaning base.

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 tank.

In use, the prior art wet surface cleaners require the addition of a cleaning agent to the supply tank in order to enhance the cleaning effect. 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.

For this reason, it is a reasonable way to provide foam by means of the surface cleaning apparatus. However, in the existing foam generator, such as a foam hand washing machine, the air cavity and the liquid cavity of the air-liquid mixing pump are arranged together, a part of the space accommodates a compressed gas structure, a part of the space accommodates a pumped liquid structure, and air-liquid mixing fluid is formed at the output port. Such a limited construction space results in lower flow and pressure of the generated gas and liquid; meanwhile, the structure is complex, and the installation and the disassembly are troublesome.

Disclosure of Invention

In order to solve one of the above technical problems, the present disclosure provides a foam generator and a cleaning base.

According to one aspect of the present disclosure, there is provided a foam generator, comprising:

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

a liquid pump in communication with the supply tank for providing a liquid;

the air pump and the liquid pump are connected to the mixing cavity, and the mixing cavity can receive the gas generated by the air pump and the liquid generated by the liquid pump; and causing the gas and liquid to mix in the mixing chamber to produce a foam.

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 the foam generator of at least one embodiment of the present disclosure, 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, and an output shaft of the other end of the double-headed motor is used for driving the air pump.

In accordance with at least one embodiment of the present disclosure, the foam generator, the liquid pump is a peristaltic pump.

According to the foam generator of at least one embodiment of the present disclosure, the air pump includes at least one rubber bowl set capable of being reciprocally pressed and released when the air pump is driven, thereby outputting the air to the outside.

A foam generator according to 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.

The foam generator according to at least one embodiment of the present disclosure, the second inlet is perpendicular or substantially perpendicular to the flow direction of the liquid in the mixing chamber.

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 discharged from the foam port.

According to another aspect of the present disclosure, there is provided a cleaning base comprising the foam generator described above.

A cleaning base according to at least one embodiment of the present disclosure includes:

a frame portion configured to be adapted to move over a floor surface to be cleaned; the foam generator is arranged on the frame body part;

a suction nozzle defining a dirt inlet to the recovery channel;

a stirring member adjacent to the suction nozzle, the stirring member configured to agitate a floor surface to be cleaned;

a cover disposed on the frame portion and configured to partially enclose the stirring member;

a liquid dispenser configured to dispense cleaning liquid to at least one of a stirring element and a floor surface to be cleaned; and

and the foam outlet is connected with the foam generator and is used for providing foam to the surface to be cleaned.

The cleaning base according to at least one embodiment of the present disclosure, the foam outlet is provided to the cover.

In accordance with a cleaning base of at least one embodiment of the present disclosure, the foam delivered outwardly from the foam outlet is laterally spread across the surface to be cleaned in front of the cleaning base and has a width that does not exceed the projected width of the cleaning base onto the surface to be cleaned.

A cleaning base according to at least one embodiment of the present disclosure, the foam outlet is near a front end of the cleaning base so as to emit foam toward a front of the cleaning base.

A cleaning base according to at least one embodiment of the present disclosure, the foam outlet is located at a position in the center of the front end of the cleaning base.

The cleaning base according to at least one embodiment of the present disclosure, the foam outlet is provided obliquely downward so that the foam can be sprayed toward the front floor of the cleaning base.

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 foam generator according to one embodiment of the present disclosure.

Fig. 2 is a schematic structural view of an air pump according to an embodiment of the present disclosure.

Fig. 3 is a schematic structural view of a driving device according to an embodiment of the present disclosure.

Fig. 4 is an exploded view of fig. 3.

Fig. 5 is a schematic structural view of a liquid pump according to one embodiment of the present disclosure.

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

Fig. 7 and 8 are schematic structural views of a cleaning base according to one embodiment of the present disclosure.

Fig. 9 is an enlarged schematic view of the foam outlet of fig. 8.

Fig. 10 is a schematic structural view of a cleaning base according to another embodiment of the present disclosure.

Fig. 11 is a schematic structural view of a surface cleaning apparatus according to one embodiment of the present disclosure.

The reference numerals in the drawings specifically are:

100 surface cleaning apparatus

113 supply tank

121 recovery channel

123 recovery tank

130 frame portion

140 frame body part

141 cover body

150 stirring piece

170 handle portion

182 foam outlet

190 latch assembly

800 foam dispenser

810 air pump

811 fixing seat

812 rubber bowl group

813 swing frame

814 sealing plate

815 seal

816 upper cover

817 base

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 foam generator 800 according to one embodiment of the present disclosure.

As shown in fig. 1, the present disclosure provides a foam generator 800 including an air pump 810, a liquid pump 820, and a mixing chamber 830.

The air pump 810 communicates with the atmosphere to directly draw in 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 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.

Fig. 2 is a schematic structural view of the air pump 810 according to one embodiment of the present disclosure.

Specifically, as shown in fig. 2, the air pump 810 includes a fixing seat 811 for fixing at least one rubber bowl set 812, the rubber bowl set 812 being capable of being reciprocally pressed and released when the air pump 810 is driven, and being capable of outputting a high flow rate of air outwards when the rubber bowl set 812 is pressed, and accordingly being capable of sucking air from the atmosphere when the rubber bowl set 812 is released.

The air pump 810 further includes a swing frame 813, and the swing frame 813 is connected to the rubber bowl set 812 such that the rubber bowl set 812 can be reciprocally pressed and released when the swing frame 813 swings. In one embodiment, the air pump 810 further includes an eccentric element (not shown) that is driven by the driving device 840 and causes the swing frame 813 to press and release the rubber bowl 812 when the eccentric element rotates.

The fixing seat 811 has a through hole, and the rubber bowl 812 communicates with one end of the through hole, whereby gas generated during the extrusion of the rubber bowl 812 is transferred to the gas outlet through the through hole.

In the present disclosure, the air pump 810 further includes a sealing plate 814, where the sealing plate 814 is disposed on the fixing seat 811, and the sealing plate 814 is provided with an air hole, and the air hole is communicated with the through hole. Also, a sealing member 815 is provided on the sealing plate 814, the sealing member 815 selectively sealing the air hole, and the sealing member 815 may also be called a check valve, i.e., the sealing member 815 opens the air hole when the air flows from the rubber bowl set 812 to the air outlet; conversely, when the rubber bowl 812 is in a released state, the seal 815 closes the air vent, thereby allowing the rubber bowl 812 to draw air from the air inlet. Of course, the rubber bowl 812 is further provided with a one-way valve to allow suction of the rubber bowl 812 through the one-way valve.

The upper cover 816 is fixed to the fixing seat 811 such that the sealing plate 814 is positioned between the upper cover 816 and the fixing seat 811. In the present disclosure, the upper cover 816 is provided with an air outlet; the base 817 is fixed to the fixing seat 811 such that the upper cover 816 and the base 817 are located at two sides of the fixing seat 811, respectively, wherein the base 817 is formed with an air inlet. In the present disclosure, the rubber bowl 812 and other components are located between the base 817 and the fixing base 811.

While only one configuration of the air pump 810 is schematically illustrated above, those skilled in the art will appreciate that other types of air pumps may be selected by the present disclosure, including vane pumps, plunger pumps, diaphragm pumps, etc., as long as the air pump is capable of outputting high pressure air outwardly.

The liquid pump 820 is in communication with a supply tank for providing liquid; wherein the supply tank is a component of a surface cleaning apparatus capable of storing a cleaning liquid, such as water, in the present disclosure, the liquid may be provided to the foam generator 800 from a host of the surface cleaning apparatus.

Fig. 3 is a schematic structural view of a driving device according to an embodiment of the present disclosure. Fig. 4 is an exploded view of fig. 3.

The foam generator 800 of the present disclosure further includes a driving device 840, where the driving device 840 is used to drive the air pump 810 and the liquid pump 820, and thus 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. For example, the driving device 840 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.

It should be appreciated by those skilled in the art that the driving device 840 may directly drive one of the air pump 810 and the liquid pump 820 and drive the other of the air pump 810 and the liquid pump 820 through a transmission or the like. Thus, by providing one driving means 840, the foam generator 800 of the present disclosure can be made more compact and can be more conveniently disposed inside the cleaning base.

Also, the flow rate of the fluid can be significantly increased by the separate arrangement of the air pump 810 and the liquid pump 820, so that the foam generator of the present disclosure significantly increases the flow rate of the fluid.

Fig. 5 is a schematic structural view of a liquid pump according to one embodiment of the present disclosure.

The liquid pump 820 is preferably a peristaltic pump; fig. 5 shows a configuration of a shaped peristaltic pump, in which the squeeze assembly 821 can be driven in rotation, squeezing the flexible tube 822 deforms the flexible tube 822 and effects fluid transport within the flexible tube 822 when the squeeze assembly 821 is rotated.

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.

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

As shown in fig. 1, the air pump 810 and the liquid pump 820 are both connected to the mixing chamber 830, and the mixing chamber 830 is configured to receive the air generated by the air 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. 6, 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. 6, 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 port.

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

Fig. 7 and 8 are schematic structural views of a cleaning base according to one embodiment of the present disclosure. Fig. 9 is an enlarged schematic view of the foam outlet of fig. 8.

According to another aspect of the present disclosure, a cleaning base is provided that includes the foam generator 800 described above.

As shown in fig. 7 to 9, the cleaning base includes a frame portion 140, the frame portion 140 being configured to be adapted to move over a floor surface to be cleaned. For example, the frame portion 140 can include two rolling wheels and can define a receiving chamber for the cleaning base, with at least a portion of the foam generator 800 being disposed within the receiving chamber.

The cleaning base further comprises a suction nozzle defining a dirt inlet to the recovery channel 121; in a preferred embodiment, the suction nozzle may be formed at the frame part 130 and located at the rear of the stirring member 150 to facilitate collection of the sewage after the stirring member 150 cleans the floor surface to be cleaned.

The surface cleaning apparatus 100 for cleaning a floor surface further includes a recovery tank 123, the frame part 130 is formed with a receiving space, the recovery tank 123 is detachably provided to the frame part 130, so that when there is a lot of liquid stored in the recovery tank 123, a user can remove the recovery tank 123, and pour out the sewage inside and clean up the solid garbage, and at this time, a part of the outer surface of the recovery tank 123 is formed as a part of the outer surface of the surface cleaning apparatus 100 for cleaning a floor surface.

Of course, it should be understood by those skilled in the art that the recovery tank 123 may be non-detachably disposed in the frame 130, for example, disposed in the frame 130, and in this case, the sewage in the recovery tank 123 needs to be discharged through a sewage port disposed in the frame 130.

The suction nozzle is communicated with the recovery tank 123 through a recovery passage 121, and in the present disclosure, a part of the recovery passage 121 is provided at the cleaning base part and a part thereof is provided at the frame part 130, whereby a mixture of sewage and gas can be recovered to the recovery tank 123 through the recovery passage 121.

The surface cleaning apparatus 100 for cleaning a floor surface further comprises an air flow accelerator (not shown in the figures) in fluid communication with the fluid recovery system to effect forced flow of air within the recovery channel 121 by the air flow accelerator. In one embodiment, the airflow accelerator may be a suction device capable of generating a negative pressure that can be applied to the recovery tank 123, thereby enabling the flow of gas from the suction nozzle to the recovery tank 123 and thereby also the flow of sewage in that direction. More preferably, the air flow accelerator is in fluid communication with the suction nozzle for generating working gas flowing through the recovery path during the self-cleaning cycle.

The cleaning base further comprises a stirring member 150, the stirring member 150 being adjacent to the suction nozzle, the stirring member 150 being configured to agitate a floor surface to be cleaned; that is, when the surface cleaning apparatus 100 for cleaning a floor surface is performing a cleaning operation or a self-cleaning operation, the stirring member 150 can be rotated, whereby the stirring member 150 can be brought into frictional contact with the floor surface to be cleaned and cleaning of the floor surface to be cleaned is achieved. During frictional contact of the stirring member 150 with the floor surface to be cleaned, the cleaning liquid can be supplied to the stirring member 150, thereby achieving wet cleaning of the floor surface to be cleaned.

In the present disclosure, the surface cleaning apparatus 100 for cleaning a floor surface further includes a supply tank 113, the supply tank 113 being formed in the shape of a tank to store a cleaning liquid in the supply tank 113. In one embodiment, the cleaning liquid may be clean water. Of course, it will be appreciated by those skilled in the art that the supply tank 113 may also store a mixture of clean water and detergent, etc.

The frame part 130 has a receiving space formed thereon, and the supply tank 113 can be disposed in the receiving space such that a portion of the outer surface of the supply tank 113 forms a portion of the outer surface of the surface cleaning apparatus 100 for cleaning a floor surface.

In the present disclosure, the supply tank 113 is detachable from the frame part 130 and is manually filled with a cleaning liquid by a user; of course, the supply tank 113 of the present disclosure may also be filled with the cleaning liquid of the supply tank 113 through the cleaning liquid interface provided on the frame portion 130.

Still further, when the cleaning liquid interface is provided on the frame part 130, the supply tank 113 may be provided inside the frame part 130, in which case the supply tank 113 is not formed as at least part of the outer surface of the surface cleaning apparatus for cleaning a floor surface.

The cleaning base includes a liquid dispenser configured to dispense cleaning liquid to at least one of the agitator 150 and the floor surface to be cleaned. In a preferred embodiment, the liquid dispenser may be formed in the form of a water outlet or nozzle so as to spray the cleaning liquid onto the surface of the stirring member 150 or the floor surface to be cleaned. Of course, it will be appreciated by those skilled in the art that the liquid dispenser may also be located inside the stirring element 150, thereby providing cleaning liquid to the inner surface of the fluff of the stirring element 150.

Accordingly, the supply tank 113 and the liquid dispenser are connected by a dispensing passage (not shown in the drawings), and accordingly, a portion of the dispensing passage is provided at the cleaning base portion and a portion is provided at the frame portion 130.

Preferably, the dispensing passage may be provided with a pump means, a heating means, etc., whereby the liquid in the supply tank 113 is pressurized by the provision of the pump means, supplied to the liquid dispenser, and further supplied to the stirring member 150 or the floor surface to be cleaned; accordingly, by providing the heating means, the cleaning liquid in the supply tank 113 can be heated and supplied to the liquid dispenser, and further supplied to the stirring member 150 or the floor surface to be cleaned.

The cleaning base may further include a cover 141, the cover 141 being disposed at the frame 140 and configured to partially surround the stirring member 150; in one embodiment, the frame 140 forms a receiving chamber, and the stirring member 150 is rotatably (rotatably) disposed in the receiving chamber, and in this case, the cover 141 is also formed as a part of the receiving chamber. In other words, the cover 141 and the frame 140 together form the accommodating chamber.

The cleaning base may further include a foam outlet 182, the foam outlet 182 for delivering the foam generated by the foam generator 800 to the outside, wherein the foam outlet 182 is provided to the cover 141.

In the present disclosure, the foam outlet 182 is used to deliver the foam generated by the foam generator 800 to the outside of the cover 141; in one embodiment, the number of foam outlets 182 is one, the foam outlets 182 being located at a central position of the front end of the cleaning base. In another embodiment, as shown in fig. 10, the number of the foam outlets 182 is two, and two foam outlets 182 are symmetrically disposed at the front end of the cleaning base; accordingly, when the number of foam outlets 182 is three or more, these foam outlets 182 are uniformly distributed laterally along the front end of the floor brush.

In the present disclosure, the foam outlet 182 is near the front end of the cleaning base so as to emit foam toward the front of the cleaning base; more preferably, the foam outlet 182 is provided to be inclined downward so that the foam can be sprayed toward the front floor of the cleaning base and the dirty floor is cleaned by the stirring member 150, thereby improving the cleaning effect.

The foam delivered outwards from the foam outlet is spread laterally on the surface to be cleaned in front of the cleaning base, and the width does not exceed the projected width of the cleaning base on the surface to be cleaned, so that the cleaning foam can be utilized maximally, and the waste of the foam is prevented. And when the foam is sprayed to an area outside the projection width in front of the cleaning base, manual cleaning is required, which is time-consuming and laborious.

In another embodiment of the present disclosure, the surface cleaning apparatus 100 for cleaning a floor surface includes a latch assembly 190, the latch assembly 190 for securing the cover 141 to the frame portion 140; for example, by pressing the latch assembly 190 toward the middle, the latch assembly 190 can be unlocked and the cover 141 can be removed from the frame 140, and accordingly, when the cover 141 is placed on the frame 140 and the latch assembly 190 is released, the relative position between the cover 141 and the frame 140 can be fixed.

Fig. 11 is a schematic structural view of a surface cleaning apparatus according to one embodiment of the present disclosure.

The cleaning base of the present disclosure can be applied to a surface cleaning apparatus, and the structure of the surface cleaning apparatus will be generally described herein.

As shown in fig. 11, the surface cleaning apparatus 100 of the present disclosure is used for cleaning a floor surface to be cleaned, and preferably, the surface cleaning apparatus 100 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 100.

The surface cleaning apparatus 100 further comprises a frame portion 130; the frame part 130 is pivotally connected to the cleaning base, for example, the frame part 140 is pivotally connected to the cleaning base, and the frame part 130 is provided with a handle part 170, so that a predetermined angle is formed between the frame part 130 and the cleaning base when a user holds the handle part 170, thereby facilitating the user to operate the surface cleaning apparatus 100 in a cleaning state.

As described above, the surface cleaning apparatus 100 of the present disclosure may also include a supply tank 113 or the like, which is not described in detail herein.

In the description of the present specification, reference to the terms "one embodiment/manner," "some embodiments/manner," "example," "specific example," or "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 present 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" is at least two, such as two, three, etc., unless explicitly 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 (15)

1. A foam generator, comprising:

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

a liquid pump in communication with the supply tank for providing a liquid;

the air pump and the liquid pump are connected to the mixing cavity, and the mixing cavity can receive the gas generated by the air pump and the liquid generated by the liquid pump; and causing the gas and liquid to mix in the mixing chamber to produce a foam.

2. The foam generator of claim 1, wherein the air pump and the liquid pump are driven by the same driving means.

3. The foam generator of claim 2, wherein the driving means is a double-ended motor, an output shaft of one end of the double-ended motor is used to drive the liquid pump, and an output shaft of the other end of the double-ended motor is used to drive the air pump.

4. The foam generator of claim 1, wherein the liquid pump is a peristaltic pump.

5. The foam generator of claim 1, wherein the air pump includes at least one rubber bowl set capable of being reciprocally squeezed and released to output the air outwardly when the air pump is driven.

6. The foam generator 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.

7. The foam generator of claim 6, wherein the second inlet is perpendicular or substantially perpendicular to a flow direction of the liquid along the mixing chamber.

8. The foam generator of claim 7, 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 discharged from the foam port.

9. A cleaning base comprising the foam generator of any one of claims 1-8.

10. The cleaning base portion of claim 9, comprising:

a frame portion configured to be adapted to move over a floor surface to be cleaned; the foam generator is arranged on the frame body part;

a suction nozzle defining a dirt inlet to the recovery channel;

a stirring member adjacent to the suction nozzle, the stirring member configured to agitate a floor surface to be cleaned;

a cover disposed on the frame portion and configured to partially enclose the stirring member;

a liquid dispenser configured to dispense cleaning liquid to at least one of a stirring element and a floor surface to be cleaned; and

and the foam outlet is connected with the foam generator and is used for providing foam to the surface to be cleaned.

11. The cleaning base of claim 10, wherein the foam outlet is disposed in the cover.

12. The cleaning base of claim 10, wherein the foam delivered outwardly from the foam outlet is laterally dispersed in front of the cleaning base on the surface to be cleaned and has a width that does not exceed a projected width of the cleaning base on the surface to be cleaned.

13. The cleaning base of claim 10, wherein the foam outlet is proximate a front end of the cleaning base to emit foam forward of the cleaning base.

14. The cleaning base of claim 13, wherein the foam outlet is centrally located at a front end of the cleaning base.

15. The cleaning base of claim 10, wherein the foam outlet is downwardly sloped so that the foam can be sprayed toward the front floor surface of the cleaning base.

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