CN220001662U

CN220001662U - Nozzle, floor brush assembly and surface cleaning equipment

Info

Publication number: CN220001662U
Application number: CN202321519764.2U
Authority: CN
Inventors: 孙常亮; 谢明健; 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: 2023-11-14
Anticipated expiration: 2033-06-14

Abstract

The present disclosure provides a nozzle connected to a foam generator for supplying cleaning foam generated by the foam generator to a surface to be cleaned, the nozzle including a first body, a second body, and a cutout; wherein the first and second bodies are connected to each other and the cleaning foam is supplied to the surface to be cleaned through the slit; the second body includes a delivery channel for delivering cleaning foam; the slit is disposed transversely through the first body to communicate with the delivery channel such that the cleaning foam forms a fan-shaped radiating surface after exiting the slit. The present disclosure also provides a floor brush assembly and a surface cleaning apparatus.

Description

Nozzle, floor brush assembly and surface cleaning equipment

Technical Field

The present disclosure relates to a nozzle, a floor brush assembly, and 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 tank.

Wet surface cleaners generally have: a supply tank containing a cleaning solution; a recovery tank for recovering contaminants recovered from the floor being cleaned; a motor-driven vacuum source to form a vacuum flow path from the floor being cleaned to the recovery tank; a rechargeable battery to provide energy to each component; a base station for charging and post-cleaning maintenance of the wet surface cleaner.

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.

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 such a device is used, the foam can be supplied only to a partial area in the cleaning width direction, and the cleaning effect is not ideal.

Based on this, how to effectively increase the width of the foam ejected from the nozzle has become a problem to be solved.

Disclosure of Invention

In order to solve one of the above technical problems, the present disclosure provides a nozzle, a floor brush assembly and a surface cleaning apparatus.

According to one aspect of the present disclosure, there is provided a nozzle connected to a foam generator for supplying cleaning foam generated by the foam generator to a surface to be cleaned, the nozzle including a first body, a second body, and a slit; wherein the first and second bodies are connected to each other and the cleaning foam is supplied to the surface to be cleaned through the slit; the second body includes a delivery channel for delivering cleaning foam; the slit is disposed transversely through the first body to communicate with the delivery channel such that the cleaning foam forms a fan-shaped radiating surface after exiting the slit.

In accordance with a nozzle of at least one embodiment of the present disclosure, the inner diameter of the delivery channel is less than the projected length of the cutout on the cross-section of the delivery channel.

In accordance with a nozzle of at least one embodiment of the present disclosure, the cutout is at least partially formed in the first body.

In accordance with a nozzle of at least one embodiment of the present disclosure, the cutout is at least partially formed in the second body.

In accordance with a nozzle of at least one embodiment of the present disclosure, at least a portion of the second body is formed with a groove formed as a portion of the cutout.

In accordance with a nozzle of at least one embodiment of the present disclosure, the delivery channel includes a circular channel outlet, a center of projection of the slit at the circular channel outlet passing through a center of the circular channel outlet.

In accordance with a nozzle of at least one embodiment of the present disclosure, the first body has a hemispherical cushion chamber inside, the hemispherical cushion chamber communicating with the cutout.

In accordance with a nozzle of at least one embodiment of the present disclosure, the outer surface of the first body is a hemispherical surface and the inner surface of the first body is a hemispherical surface, thereby providing the first body with a substantially uniform wall thickness as a whole.

According to a nozzle of at least one embodiment of the present disclosure, the angle of the fan-shaped radiating surface ranges from 10 ° to 160 °.

The nozzle according to at least one embodiment of the present disclosure, the delivery channel has a diameter of 2-3mm.

The width of the slit is 0.2-0.4mm according to the nozzle of at least one embodiment of the present disclosure.

The depth of the portion of the slit located in the second body is 0.1-0.3mm according to the nozzle of at least one embodiment of the present disclosure.

The nozzle according to at least one embodiment of the present disclosure further includes a first mounting portion for connecting to a foam generator.

The nozzle according to at least one embodiment of the present disclosure further includes a second mounting portion for securing the nozzle to the cover of the floor brush assembly.

According to another aspect of the present disclosure, there is provided a floor brush assembly comprising the nozzle described above.

In accordance with a floor brush assembly of at least one embodiment of the present disclosure, the nozzles are perpendicular or substantially perpendicular to a surface to be cleaned as the floor brush assembly is moved over the surface to be cleaned.

In accordance with at least one embodiment of the present disclosure, the plane of the nozzle's cutout is parallel to the transverse direction of the floor brush assembly.

According to the floor brush assembly of at least one embodiment of the present disclosure, when the floor brush assembly is placed on a surface to be cleaned, the distance between the nozzle and the surface to be cleaned is 15-30mm.

According to another aspect of the present disclosure there is provided a surface cleaning apparatus comprising the nozzle described above or comprising the floor brush assembly described above.

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.

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

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 cylindrical 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, the mixture of sewage and gas 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 has a plurality of annular barb structures formed on the outer surface of the second body 652, and the connection between the nozzle 650 and the foam supply line may be achieved by inserting the second body 652 inside the foam supply line, and the other end of the foam supply line may be connected to the foam outlet of the foam generator 800.

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, 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 supplying the cleaning liquid to the stirring member 630 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 an antifoaming agent storage unit (not shown) for storing an antifoaming agent. 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 section, the surface tension of the liquid in the recovery storage section 400 can be reduced, the amount of foam in the recovery storage section 400 can be reduced, and even the foam in the recovery storage section 400 can be completely removed.

The defoamer storage part can be provided in the housing chamber of the frame part 610, and in the present disclosure, by providing the foaming agent storage part 670 and the defoamer storage part in the frame part 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 is connected to a defoamer pump 693, and the defoamer pump 693 can supply the defoamer to the recovery pipeline 401 or the suction nozzle 620, so that the defoamer can be delivered to the recovery storage part 400 through 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 part may be directly connected to the recovery line 401 or the suction nozzle 620 through 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 is connected to one end of the defoamer pipe, and the other end of the defoamer pipe is connected to the pipe connection portion 621, so that the suction nozzle 620 can be in fluid communication with the defoamer storage portion. 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 defoamer is pumped out of the defoamer storage part and then discharged to the suction nozzle 620 by positive pressure.

In another embodiment, the defoamer pump 693 is not provided on the defoamer line, but the defoamer in the defoamer storage 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 further includes an open hole to allow air to enter the defoamer storage part through the open hole, so that the internal and external pressure differences of the defoamer storage part can be balanced, and suction of the defoamer pump 693 is facilitated or negative pressure suction is facilitated.

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.

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

1. A nozzle connected to a foam generator for supplying cleaning foam generated by the foam generator to a surface to be cleaned, characterized in that the nozzle comprises a first body, a second body and a slit; wherein the first and second bodies are connected to each other and the cleaning foam is supplied to the surface to be cleaned through the slit; the second body includes a delivery channel for delivering cleaning foam; the slit is disposed transversely through the first body to communicate with the delivery channel such that the cleaning foam forms a fan-shaped radiating surface after exiting the slit.

2. The nozzle of claim 1, wherein an inner diameter of the delivery channel is less than a projected length of the cutout on a cross-section of the delivery channel.

3. The nozzle of claim 1, wherein the cutout is at least partially formed in the first body.

4. A nozzle as claimed in claim 3, wherein said cutout is at least partially formed in said second body.

5. The nozzle of claim 4, wherein at least a portion of the second body is formed with a groove formed as part of the cutout.

6. The nozzle of claim 1, wherein the delivery channel comprises a circular channel outlet, a center of projection of the cutout at the circular channel outlet passing through a center of the circular channel outlet.

7. The nozzle of claim 1, wherein the first body has a hemispherical cushion chamber therein, the hemispherical cushion chamber extending through the cutout.

8. The nozzle of claim 7 wherein the outer surface of the first body is a hemispherical surface and the inner surface of the first body is a hemispherical surface, thereby providing the first body with a generally uniform wall thickness throughout.

9. A nozzle as claimed in claim 1, wherein the angle of the fan-shaped radiating surface is in the range of 10 ° -160 °.

10. A nozzle as claimed in claim 1, wherein the delivery passage has a diameter of 2-3mm.

11. The nozzle of claim 1, wherein the slit has a width of 0.2-0.4mm.

12. A nozzle as claimed in claim 1, wherein the portion of the cutout located in the second body has a depth of 0.1-0.3mm.

13. The nozzle of claim 1, further comprising a first mounting portion for connecting to a foam generator _。

14. The nozzle of claim 1, further comprising a second mounting portion for securing the nozzle to a cover of the floor brush assembly.

15. A floor brush assembly comprising the nozzle of any one of claims 1-14.

16. The floor brush assembly of claim 15, wherein the nozzle is perpendicular or substantially perpendicular to a surface to be cleaned as the floor brush assembly is moved over the surface.

17. The floor brush assembly of claim 15, wherein the plane of the nozzle cutout is parallel to the transverse direction of the floor brush assembly.

18. The floor brush assembly of claim 15, wherein the nozzle is spaced from the surface to be cleaned by a distance of 15-30mm when the floor brush assembly is placed on the surface to be cleaned.

19. A surface cleaning apparatus comprising the nozzle of any one of claims 1 to 14 or comprising the floor brush assembly of any one of claims 15 to 18.