CN219846359U

CN219846359U - Floor brush assembly and floor washing machine

Info

Publication number: CN219846359U
Application number: CN202320235852.3U
Authority: CN
Inventors: 蔡演强; 陈龙
Original assignee: Guangdong Delma Technology Co Ltd
Current assignee: Guangdong Delma Technology Co Ltd
Priority date: 2022-09-23
Filing date: 2023-02-16
Publication date: 2023-10-20
Anticipated expiration: 2033-02-16
Also published as: CN219578808U; CN220403908U; CN219578817U; CN116211195A; CN116115129A; CN219578807U; CN219578806U

Abstract

The utility model discloses a floor brush assembly and a floor washing machine, wherein the floor brush assembly comprises: the shell is provided with a main suction port; the rolling brush is arranged on the shell, and the sewage which is collected by the auxiliary rolling brush is collected through the main suction port; the suction device is arranged in the shell and comprises a vacuum source motor, and the vacuum source motor is a volute fan; and the recovery box is arranged in the shell and is configured to store dirt sucked by the volute fan from the main suction port. From this, through adopting spiral case fan, can make full use of spiral case fan's volume advantage, the convenience all sets up spiral case fan and collection box in the scrubbing brush, not only can shorten the sewage recovery stroke between spiral case fan and the collection box, reduces suction loss, can reduce the volume of scrubbing brush subassembly moreover, can make the scrubbing brush subassembly lighter and thinner.

Description

Floor brush assembly and floor washing machine

Technical Field

The utility model relates to the technical field of floor cleaning, in particular to a floor brush assembly and a floor washing machine.

Background

With the development of technology and the improvement of living standard of people, the floor washing machine is accepted by people with better cleaning effect on the floor, and is becoming popular. The floor cleaning machine is internally provided with a sewage tank, a clean water tank, a floor brush and a suction assembly, wherein the clean water tank is used for providing clean water for the floor cleaning machine, and the suction assembly can generate negative pressure so as to suck the mixture of sewage scraped by the floor brush and solids into the sewage tank, and the sewage tank is used for storing recycled sewage, so that the normal work of the floor cleaning machine can be ensured.

In the related art, the suction assembly is mainly a suction motor, and some floor washers are provided with the suction motor on the machine body, and the suction port of the floor brush is required to be connected through a dirt sucking pipeline, so that the arrangement of the pipeline is increased, the structure of the floor washer is relatively bulkier, the arrangement positions of the suction motor and the suction port are far away, and the suction loss is increased. Other floor washers have suction motors mounted to the floor brush, but have problems of difficult arrangement and increased volume of the floor brush.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one object of the present utility model is to provide a floor brush assembly, which adopts a volute fan, and has better suction effect and smaller volume.

The utility model further provides a floor washing machine.

According to an embodiment of the utility model, a floor brush assembly includes: the shell is provided with a main suction port; the rolling brush is arranged on the shell; the sewage which is collected by the auxiliary rolling brush is collected through the main suction port; the suction device is arranged in the shell and comprises a vacuum source motor, and the vacuum source motor is a volute fan; and the recovery box is arranged in the shell and is configured to store dirt sucked by the volute fan from the main suction port.

From this, through adopting spiral case fan, can make full use of spiral case fan's volume advantage, the convenience all sets up spiral case fan and collection box in the scrubbing brush, not only can shorten the sewage recovery stroke between spiral case fan and the collection box, reduces suction loss, can reduce the volume of scrubbing brush subassembly moreover, can make the scrubbing brush subassembly lighter and thinner.

In some examples of the utility model, the roller brush, the recovery tank, and the suction device are arranged in sequence along a front-to-rear direction of travel of the floor brush assembly.

In some examples of the utility model, the floor brush assembly has a dimension in the fore-aft direction in the range of 240mm-280mm; and/or the minimum distance between the center of the volute fan and the axis of the rolling brush is 180-217 mm.

In some examples of the present utility model, the rolling brush and the recovery tank are arranged in order in a front-rear direction, and the suction device and the recovery tank are arranged side by side in a left-right direction perpendicular to the front-rear direction.

In some examples of the utility model, the ground brush assembly has a dimension in the fore-aft direction in the range of 180mm-220mm; and/or the minimum distance between the center of the volute fan and the axis of the rolling brush is 64-124 mm.

In some examples of the utility model, the height of the floor brush assembly ranges from 67mm to 106mm.

In some examples of the utility model, the scroll blower is mounted vertically with its axis substantially parallel to the direction of travel; or the volute fan is obliquely arranged, the axis of the volute fan is arranged at an angle with the advancing direction, and the angle range is 40-80 degrees; or the spiral case fan is transversely installed, and the axis of the spiral case fan is basically vertical to the advancing direction.

In some examples of the present utility model, rollers are provided on the housing to enable the floor brush assembly to move over the ground by the rollers, and the roller brush, the recovery tank, the suction device and the rollers are arranged in this order along a front-rear direction of travel of the floor brush assembly.

In some examples of the present utility model, an exhaust channel is further disposed in the housing, the volute fan is provided with an air inlet and an air outlet, the air inlet is communicated with the recovery tank, and the air outlet is communicated with an air inlet end of the exhaust channel.

In some examples of the present utility model, at least one side of the left-right direction of the housing is provided with an air outlet hole, the air outlet hole is located at least one side of the left-right direction of the housing, the air outlet hole is communicated with an air outlet end of the air outlet channel, and the air inlet direction of the suction device is perpendicular to the air outlet direction of the suction device.

In some examples of the present disclosure, the scroll fan includes an air duct member and an air duct member, the air duct member includes a first air duct member and a second air duct member, the air blower member is disposed in the first air duct member, the air inlet is disposed at a lower side of the first air duct member, the second air duct member is communicated between the recovery tank and the air inlet, and the air outlet is disposed at least one side of the first air duct member in a left-right direction.

According to an embodiment of the utility model, a floor scrubber includes: the above-described floor brush assembly; the main body is arranged above the ground brush assembly and can be pivotally connected and fixed with the ground brush assembly.

In some examples of the utility model, a connection is connected between the main body and the floor brush assembly, and the volute fan is located below the connection.

In some examples of the utility model, rollers are provided on the housing to effect movement of the brush assembly over the ground by the rollers, the volute fan being between the rollers and the connection.

In some examples of the present utility model, a vertical plane perpendicular to the left-right direction is set as a reference plane, and a projection of the scroll fan on the reference plane and a projection of the roller on the reference plane are at least partially overlapped with each other.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic perspective view of a floor scrubber according to an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of the floor scrubber shown in fig. 1.

FIG. 3 is a schematic perspective view of a portion of the floor scrubber shown in FIG. 1 including a floor brush assembly.

Fig. 4 is a cross-sectional view of fig. 3.

Fig. 5 is a partial perspective view of the floor brush assembly of the floor scrubber of fig. 1.

Fig. 6 is a cross-sectional view of the recovery tank of the floor scrubber shown in fig. 1.

Fig. 7 is a schematic diagram of arrangement positions of a rolling brush, a recovery box and a volute fan in an embodiment of the utility model.

Fig. 8 is a schematic diagram of the arrangement positions of the rolling brush, the recovery box and the volute fan in another embodiment of the utility model.

Fig. 9 is a schematic diagram of the position of the lateral lay-out of the volute fan in one embodiment of the utility model.

Fig. 10 is a schematic view illustrating a position where the scroll fan is inclined in another embodiment of the present utility model.

Fig. 11 is a schematic view of a floor scrubber according to another embodiment of the present utility model.

FIG. 12 is a cross-sectional view of FIG. 11;

FIG. 13 is a cross-sectional view of a lateral lay-flat layout of a volute fan in accordance with another embodiment of the present utility model;

FIG. 14 is a cross-sectional view of another embodiment of the utility model in another direction of the horizontal layout of the volute fan;

fig. 15 is a cross-sectional view of a lateral lay-flat layout of a volute fan in another embodiment of the utility model.

Reference numerals:

100. a floor scrubber;

10. a handle; 11. a handle; 111. a control unit; 12. a connecting rod;

20. a main body; 21. a volute fan; 211. an air inlet; 212. an air outlet; 213. an air duct member; 2131. a first air duct member; 2132. a second air duct member; 214. a wind machine member; 22. a supply box; 23. a power supply unit; 26. an air outlet hole; 27. a pipe; 28. a connection part;

30. a floor brush assembly; 301. a housing; 302. a main suction port; 303. a roller; 304. an exhaust passage;

50. a recovery box; 501. an exhaust port; 502. a water receiving area;

51. a connection cover; 511. a second separator; 512. a partition plate; 514. a connection port; 515. an upper housing; 517. a cavity; 519. a gap;

52. a recovery box body; 520. a first separator; 521. a first water outlet; 524. a lower housing; 525. a third separator; 528. a water inlet; 529. a fourth separator;

541. Recovering the storage cavity; 542. a gas-liquid separation chamber; 543. an air flow channel;

60. a cleaning structure; 61. a rolling brush; 62. a metal scraper; 63. a confluence member; 64. scraping the strip; 65. and (3) a water pump.

Detailed Description

Embodiments of the present utility model will be described in detail below, by way of example with reference to the accompanying drawings.

Referring now to fig. 1-15, a floor brush assembly 30 according to an embodiment of the present utility model is described, and floor brush assembly 30 may be applied to a floor scrubber 100.

First embodiment:

referring to FIG. 1, a floor scrubber 100 is disclosed that includes a handle 10, a main body 20, and a brush assembly 30 connected to each other, wherein the brush assembly 30 is configured to move over and clean a surface to be cleaned (typically a floor); body 20 is pivotally connected to floor brush assembly 30 such that body 20 is pivotable between an upright storage position and a reclined operating position; handle 10 extends outwardly from the top of main body 20 for pivoting main body 20 between an upright storage position and a reclined operating position, while handle 10 is also configured to move floor brush assembly 30 over a surface to be cleaned. Body 20 is pivotally connected to floor brush assembly 30 such that body 20 is pivotable between an upright storage position and a reclined operating position. For convenience of description, the following description will exemplify a surface to be cleaned by taking a floor as an example.

Referring to fig. 1 and 2, the handle 10 includes a handgrip 11 and a connecting rod 12, wherein the handgrip 11 is configured to be held by a user for operating the floor scrubber 100. The handle 11 is provided with a control part 111, and the control part 111 is configured to control the operation mode of the floor washing machine 100. Preferably, the control part 111 may be in the form of a control button, a touch button, or the like, and a plurality of control parts 111 may be provided on the handle 11 to perform various controls on the floor washing machine 100.

Referring to fig. 1, the control part 111 may be disposed in a receiving space provided by the handle 11, and in case the control part 111 is designed in the form of a control button, the control part 111 may be moved with respect to an outer surface of the handle 11 so as to open or close a corresponding operation. In one embodiment, the control portion 111 includes at least one of a self-cleaning key, a power-on key, an mute key, and a mode key. The operation modes of the floor washing machine 100 include a standard washing mode and a quick-drying washing mode, the standard washing mode includes water spraying and water absorbing, the quick-drying washing mode only absorbs water and does not spray water, and the mode keys are used for switching different operation modes of the floor washing machine 100 in different scenes.

With continued reference to fig. 1 and 2, a connecting rod 12 is disposed between the handle 11 and the body 20 to connect the handle 11 and the body 20. Specifically, one end of the connecting rod 12 is assembled and fixed with the handle 11, and the other end is inserted and fixed with the main body 20, so that a user can conveniently drive the main body 20 to move on the ground through the connecting rod 12. Of course, the connecting rod 12 may be integrally formed with the handle 11. The connecting rod 12 is preferably in the form of a hollow tube, for example, a hollow circular tube, so that the wires in the main body 20 can be conveniently introduced into the handle 11, and connected with the plurality of control parts 111, so that the plurality of control parts 111 can be conveniently controlled.

As shown in fig. 2 and 14, the floor brush assembly 30 accommodates therein a suction device including a vacuum source motor and an exhaust passage 304 located beside the vacuum source motor, so that dirt on the floor can be recovered by using negative pressure provided by the vacuum source motor and exhaust gas in the dirt can be discharged by using the exhaust passage 304 when the floor scrubber 100 is operating normally. In one embodiment, the vacuum source motor is a scroll fan 21, and the scroll fan 21 is thinner than a conventional vacuum source motor, so by using the scroll fan 21, the height of the floor brush or the size of the front-rear length or the left-right width can be reduced according to the manner in which the scroll fan 21 is installed.

As further shown in fig. 2, the main body 20 is further provided therein with a supply box 22, a power supply unit 23, a control circuit unit (not shown) located between the power supply unit 23 and the scroll fan 21, and a water pump 65. A supply tank 22 configured to store a cleaning liquid; and a power supply unit 23 for supplying power to the floor washing machine 100. Wherein, the upper volute fan 21 is arranged in the ground brush assembly 30 and is used for extracting and recovering dirt on the ground; the supply box 22 is provided at the front side of the main body 20 in the traveling direction of the floor washing machine 100; the power supply unit 23 is used for supplying power to the floor washing machine 100, the power supply unit 23 and the control circuit are located above the supply tank 22, and the water pump 65 is located below the supply tank 22 and near the floor brush assembly 30.

The cleaning liquid stored within supply tank 22 may be one or more of any suitable liquids including, but not limited to, cleaning water, concentrated detergent, diluted detergent, or mixtures thereof, and the like. The cleaning liquid may be a normal temperature cleaning liquid or a high temperature cleaning liquid. The specific structure of the supply tank 22 may be implemented according to the prior art, or may be modified according to the actual situation, and is not limited herein.

The power supply portion 23 is preferably a rechargeable battery so as to achieve cordless operation. The rechargeable battery may be a polymer battery or a lithium ion battery, etc. In one embodiment, the power supply part 23 is detachably mounted on the main body 20, and charging may be performed by removing the power supply part 23 from the main body 20. Of course, the power supply portion 23 may be provided with a charging port or a power cord, so that the rechargeable battery may be charged through the charging port without being detached, or may be operated by a cord through the power cord, so that the cord operation may be performed when the endurance is high, and the rechargeable battery may be in a power-off state (powered through the power cord) when the cord operation is performed, or may be charged while the power is supplied to the floor washing machine 100.

The control circuit part is electrically connected with the volute fan 21 and the power supply part 23 respectively so as to control the normal operation of the volute fan 21 and the power supply part 23. In this embodiment, the control circuit portion is preferably a circuit board (not numbered) and is disposed adjacent to the rechargeable battery, and an electronic device such as a microcontroller, a memory, or the like is integrated on the circuit board, and the circuit board can receive instructions from the control portion 111 and/or a display portion (not shown), can provide various information to the display portion, can also receive instructions from a remote portable device, or can provide various information to the portable device, or the like. The microcontroller may be operably coupled to the various functional systems of the floor washer 100, such as: including but not limited to the supply of cleaning liquid and the recovery of contaminated liquid. The user may interact with the microcontroller through the control 111, the display or a user interface of the portable device, for example: the microcontroller may be operably coupled with the control portion 111 to receive user input instructions, and may be operably coupled with the display portion to provide various gesture information or to receive user instructions. In the present utility model, the microcontroller may also be configured to perform a cleaning cycle for the self-cleaning mode of operation, as well as a self-cleaning cycle, a drying cycle, etc.

The control circuit part has a wireless communication module integrated thereon so that the floor washing machine 100 can communicate wirelessly with the portable device through the wireless communication module to provide information to the portable device and/or receive instructions from the portable device. The portable device may be in various forms such as a smart phone, a tablet computer, a notebook computer, and the like. The interactive interface of the display screen in the portable device may provide the pose of the floor scrubber 100 to the user via a communication connection in the form of a local or wide area network, and may also provide relevant instructions to the floor scrubber 100 via user input, such as: the user may implement any suitable type of control of the floor scrubber 100, such as self-cleaning, drying, water replenishment, heating, etc., through an interactive interface in the portable device. Preferably, the wireless communication module is a WIFI module.

Of course, the floor washing machine 100 may communicate with the control unit 111 wirelessly through the wireless communication module. In the case of a connection with a portable device, the portable device may be downloaded with a corresponding control program or may be a networked device. The wireless communication module may detect whether a wireless network exists, wireless signal strength, router-related information, and be configured to connect to the internet through a local network. Furthermore, the wireless communication module may also be integrated with the microcontroller.

The floor scrubber 100 also includes a recovery tank 50 configured to store dirt drawn by the suction device from the surface to be cleaned. In the present embodiment, the recovery tank 50 is disposed on the main body 20, and the recovery tank 50 and the supply tank 22 may be disposed on both sides of the main body 20, respectively. The suction device of the conventional floor scrubber is arranged in the main body 20, and the space volume of the main body 20 is enough to accommodate the conventional motor without space trouble, but in the embodiment, in order to make the main body 20 more portable, the suction device is arranged on the floor brush assembly 30, so that the volume and the weight of the main body 20 can be reduced; meanwhile, the volute fan 21 is adopted, so that the volume of the floor brush assembly 30 is reduced, the main body can be light and thin, and the use of a user is facilitated. Compared with the conventional motor, the floor scrubber of the embodiment not only reduces the volume of the floor brush assembly 30, but also reduces the volume and weight of the main body 20 by using the volute fan 21 under the condition of the same product shape and configuration, so that the floor scrubber is lighter and thinner and lighter.

The main body 20 and the floor brush assembly 30 are pivotally connected by a connecting portion 28, and the connecting portion 28 may be a separate component and fixed at the lower end of the main body 20, however, the connecting portion 28 may be integrally formed with the main body 20 and located at the lower end of the main body 20. Specifically, the connection portion 28 may be a hollow structure, and all of the wires and the like required for air, fluid communication, power supply and the like between the main body 20 and the floor brush assembly 30 are realized through the connection portion 28, so that power supply, communication of air and/or liquid and the like can be realized between the main body 20 and the floor brush assembly 30 via the wires and/or pipes passing through the connection portion 28.

As one example, the connection 28 may include a universal joint to enable the body 20 to rotate in both directions relative to the ground brush assembly 30. As another example, connecting portion 28 may also include a multi-axis joint that may couple body 20 with ground brush assembly 30 to allow body 20 to rotate in a first direction and a second direction relative to ground brush assembly 30. For example, the main body 20 is pivoted to an upright position by the connection portion 28, in which an angle between the main body 20 and the surface of the floor brush assembly 30 is 80 ° to 90 °, and the floor cleaning machine 100 is in a self-supporting posture, that is, the main body 20 can be supported by the floor brush assembly 30, and the upright posture can be achieved without the aid of the force of a human hand or other objects. Preferably, the body 20 is restrained from rotating under gravity when in the upright position by the engagement of the retaining projections with the connector 28.

Further, the scroll fan 21 is located below the connection portion 28. Specifically, the scroll fan 21 can be located below the connection portion 28, so that not only can the scroll fan 21 fully utilize the space below the connection portion 28, but also the scroll fan 21 can be conveniently connected with the power supply portion 23 through the connection portion 28, and the arrangement of redundant wires is avoided, so that the structural compactness of the floor brush assembly 30 can be improved.

Second embodiment:

referring to fig. 1 to 3, the second embodiment is different from the first embodiment in that a recovery tank 50 is provided on a floor brush assembly 30, a supply tank 22 is provided at one side of a main body 20, and a power supply portion 23 may be provided at the other side opposite to the supply tank 22. In the present utility model, by providing the power supply part 23 and the supply tank 22 in the main body 20 and providing the recovery tank 50 in the floor brush assembly 30, the power supply part 23 is prevented from being in contact with potential liquid, and the weight of the recovery tank 50 can be supported by the floor, the burden of the user can be reduced, the main body 20 of the floor washing machine 100 can be slim and light, and the hand pressure of the user can be reduced.

In addition, the state of the recovery tank 50 is not changed due to the inclined state of the main body 20, so that sewage leakage in the recovery tank 50 caused by the inclination of the main body 20 can be effectively prevented, the floor washing machine 100 can be provided with two use states of a vertical cleaning mode and a lying cleaning mode, when the floor is cleaned, a user can enable the main body 20 to be in the inclined state, the main body 20 and the floor brush assembly 30 form a certain included angle so as to control the floor brush assembly 30 to clean the floor, and when the floor, the cabinet bottom, the sofa bottom, the bed bottom and other low-position areas are cleaned, the user can enable the main body 20 to be approximately parallel to the floor brush assembly 30, the floor brush assembly 30 needs to go deep into the low-position areas, and further the working performance of the floor washing machine 100 can be optimized, and the use requirements of different occasions of the user can be met.

Referring to fig. 3 and 4, the floor brush assembly 30 includes a housing 301 having opposite front and rear portions, a cleaning structure 60 positioned on the front side of the floor brush assembly 30, and a main suction opening 302, the main suction opening 302 being provided on the housing 301. The cleaning structure 60 includes a roller brush 61, a fluid distribution module for supplying a predetermined amount of cleaning liquid to the roller brush 61 to supply the cleaning liquid to the floor by movement of a cleaning surface of the roller brush 61 so that the roller brush 61 wet-cleans the floor, and a dirt suction module (not numbered), in which the roller brush 61 can be driven to be in contact with the floor; the dirt suction module can collect and suck dirt (such as dust, hair, etc.) of the floor surface cleaned by the roller brush 61 into the recovery box 50 under the negative pressure provided by the suction device, thereby preventing the roller brush 61 from leaving dirt such as cleaning liquid on the floor surface after cleaning the floor surface. Of course, the floor scrubber 100 is also capable of dry cleaning the floor when the fluid dispensing module is not providing cleaning fluid to the roller brush 61. Since both the roller brush 61 and the fluid dispensing module can be designed according to the prior art, they will not be described in detail here. The sewage which is collected in an auxiliary manner by the rolling brush 61 is collected through the main suction opening 302.

Further, the roller 303 is disposed on the housing 301, and the roller 303 is positioned to rotate around the central axis on the rear portion of the floor brush assembly 30, so that the floor brush assembly 30 can conveniently move on the ground by rotating the roller 303, thereby enabling a user to operate the floor cleaning machine 100 more easily and conveniently, and improving the use experience of the user.

Referring to fig. 4, 9, 10 and 13-15, the scroll blower 21 is located between the roller 303 and the connection portion 28. Specifically, the scroll blower 21 can be disposed between the roller 303 and the connection portion 28, so that the distance between the scroll blower 21 and the connection portion 28 is shorter, the arrangement of redundant wires is avoided, the scroll blower 21 can fully utilize the position of the lower roller 303, and therefore the layout of the scroll blower 21, the roller 303 and the connection portion 28 on the floor brush assembly 30 can be optimized, and the structure of the floor brush assembly 30 is simpler and more compact.

Further, a vertical plane perpendicular to the left-right direction is set as a reference plane, and the projection of the volute fan 21 on the reference plane and the projection of the roller 303 on the reference plane are at least partially overlapped with each other, so that the relative arrangement of the volute fan 21 and the roller 303 is more reasonable, the space occupied by the volute fan 21 and the roller 303 can be reduced, the structure of the volute fan 21 can be more compact, the height of the floor brush assembly 30 is reduced, the volume of the floor brush assembly 30 is reduced, and the floor brush assembly 30 is more miniaturized.

Referring to fig. 7 and 9, the suction device is disposed adjacent to the recovery tank 50, so that not only can the sewage recovery stroke between the volute fan 21 and the recovery tank 50 be shortened, thereby reducing suction loss and improving the cleaning effect of the floor brush assembly 30 and the floor cleaning machine 100, but also the production cost of the floor cleaning machine 100 can be reduced and the structure of the floor cleaning machine 100 can be simplified without providing a long sewage suction pipe.

Referring to fig. 7 and fig. 13-15, in one embodiment, the rolling brush 61, the recovery box 50, the suction device and the roller 303 are sequentially arranged along the front-rear direction of the travel of the ground brush assembly 30, so that the roller 303 and the rolling brush 61 can rotate in the front and rear directions respectively, and the ground brush assembly 30 can move more stably and reliably on the ground. The dimension of the floor brush assembly along the front-back direction ranges from 240mm to 280mm. The minimum distance between the center of the scroll fan 21 and the axis of the roller brush 61 is in the range of 180mm to 217mm. The height of the ground brush assembly ranges from 67mm to 106mm.

Referring to fig. 8, in another embodiment, the rolling brush 61 and the recovery tank 50 are sequentially arranged along the front-rear direction, and the suction device and the recovery tank 50 are arranged side by side along the left-right direction perpendicular to the front-rear direction. The dimension of the floor brush assembly along the front-back direction ranges from 180mm to 220mm. The minimum distance between the center of the scroll fan 21 and the axis of the roller brush 61 is in the range of 64mm-124mm. The height of the ground brush assembly ranges from 67mm to 106mm.

Referring to fig. 4, 9 and 10, in the present embodiment, the scroll fan 21 may have various mounting manners, such as vertical, inclined or horizontal lying. Specifically, as shown in fig. 4, when the scroll blower 21 is installed vertically, the axis of the scroll blower 21 is substantially parallel to the traveling direction. As shown in fig. 10, when the scroll blower 21 is installed obliquely, the axis of the scroll blower 21 is disposed at an angle to the traveling direction, with the angle ranging from 40 ° to 80 °.

As shown in fig. 9 and fig. 13-15, when the scroll blower 21 is mounted transversely, the axis of the scroll blower 21 is substantially perpendicular to the traveling direction, so that the height of the floor brush assembly 30 can be reduced, the floor brush assembly 30 can be flattened and compact, and the user can operate the floor brush assembly 30 conveniently.

Referring to fig. 1, 4 and 13-15, the suction device is provided with an air inlet 211 and an air outlet 212, the air inlet 211 is connected with an air outlet 501 on a recovery box 50 arranged in a floor brush assembly 30 through a pipeline 27, an air outlet 26 is arranged on the outer wall surface of the floor brush assembly 30, the air outlet 212 is communicated with the air inlet end of an air outlet channel 304, and the air outlet 26 is communicated with the air outlet end of the air outlet channel 304, namely: the air outlet 26 is communicated with the air outlet 212, so that the air in the recovery box 50 can enter the pipeline 27 and the air exhaust channel 304 from the air outlet 501, and finally is discharged out of the floor brush assembly 30 through the air outlet 212 and the air outlet 26. Preferably, the air outlet 26 is formed at least one side of the ground washing machine 100 in the traveling direction, so as to form a side air outlet effect, and the air finally discharged is not sprayed to the user.

Further, the suction device is capable of air-in from the lower side, air-out from the side, and air-in direction of the suction device is perpendicular to air-out direction of the suction device, so that on one hand, the arrangement of the pipeline 27 between the air outlet 501 and the air outlet 212 and the arrangement of the air exhaust channel 304 between the air inlet 211 and the air outlet 26 can be facilitated, the structure of the pipeline 27 and the air exhaust channel 304 can be simpler, on the other hand, the air suction effect of the suction device can be improved, the air-out direction of the suction device is optimized, and the working performance of the floor washing machine 100 is improved.

Referring to fig. 13-15, the scroll fan 21 may mainly include an air duct member 213 and an air mechanism 214, the air duct member 213 may mainly include a first air duct member 2131 and a second air duct member 2132, the air mechanism 214 is disposed in the first air duct member 2131, the air inlet 211 is disposed at a lower side of the first air duct member 2131, the second air duct member 2132 is communicated between the recovery box 50 and the air inlet 211, and the air outlet 212 is disposed at least one side of the first air duct member 2131 in a left-right direction.

Specifically, by disposing the air inlet 211 at the lower side of the first air duct 2131, the second air duct 2132 is connected between the recovery box 50 and the air inlet 211, and disposing the air mechanism 214 in the first air duct 2131, the air mechanism 214 can suck the air in the recovery box 50 into the second air duct 2132 through the air inlet 211, then flow to the first air duct 2131, and finally flow out from the air outlet 212 on at least one side of the left and right directions of the first air duct 2131, the second air duct 2132 and the first air duct 2131 can define the flow path of the air, so that the suction device can intake air from the lower side and exhaust air from the side, the structure of the suction device can be simpler and more reliable, and the intake air and the exhaust air of the suction device can be more stable.

Referring to fig. 4, a water pump 65 has one end connected to the supply tank 22 and the other end connected to the cleaning structure 60 at the front side of the floor brush assembly 30 to deliver the cleaning liquid in the supply tank 22 to the cleaning structure 60 so that the cleaning structure 60 cleans the floor. The cleaning solution conveying pipeline connected between the water pump 65 and the cleaning structure 60 is also realized through the connecting part 28, so that the connecting distance between the water pump 65 and the cleaning structure 60 is shortened, and the cleaning solution conveying pipeline cannot rotate along with the connecting part 28 to bend.

The dirt suction module comprises a wiping plate (not shown) positioned right above the rolling brush 61, a metal scraping plate 62 positioned below a water spraying plate (not numbered) of the fluid distribution module, and a confluence piece 63 and a scraping strip 64 positioned below the metal scraping plate 62, wherein a plurality of water spraying holes are formed in the water spraying plate and are used for spraying cleaning liquid onto the rolling brush 61; the wiping plate is a soft plate and is contacted with the rolling brush 61, and is used for wiping the cleaning liquid on the rolling brush 61 uniformly to ensure the cleaning effect; the metal scraping plate 62 is abutted against the rolling brush 61 so as to scrape dirt on the rolling brush 61 away from the rolling brush 61 and fall to the ground; the scraping bar 64 is provided at the end of the confluence member 63 for collecting dirt and liquid on the ground, and then sucked into the confluence member 63 by the negative pressure provided by the suction device.

Referring to fig. 4, the dirt suction module is connected to the recovery tank 50 through the confluence member 63 so that dirt after the floor surface is cleaned by the roller brush 61 can be sucked into the recovery tank 50 through the confluence member 63 when the suction device provides negative pressure to the dirt suction module through the recovery tank 50. The bus bar 63 may be integrally formed with the floor brush assembly 30 or may be formed of a single piece, in other words, the bus bar 63 forms part of the floor brush assembly 30. A main suction opening 302 is formed between the confluence member 63 and the rolling brush 61, and the main suction opening 302 is located at the rear of the rolling brush 61 to facilitate the entry of dirt on the ground into the confluence member 63. A metal scraper 62 may be secured to the floor brush assembly 30 adjacent to the bus 63 and above the bus 63.

Referring to fig. 3 and 4, a recovery tank 50 is provided in the floor brush assembly 30, the recovery tank 50 is configured to store dirt sucked from the floor by the suction device, and a gas-liquid separation structure for separating the dirt into gas and liquid is provided in the recovery tank 50, and the separated liquid is stored in the recovery tank 50, and the gas is sucked and discharged by the suction device. Specifically, the recovery tank 50 includes a recovery tank body 52 and a connection cover 51 covering the recovery tank body 52 and hermetically connected to the recovery tank body 52, and the cleaning structure 60 is connected to the recovery tank body 52 to feed dirt into the gas-liquid separation structure for gas-liquid separation, so that waste liquid is stored in the recovery tank 50, and waste gas is discharged to the outside of the recovery tank 50. The exhaust passage 304 is connected to the connection cover 51 to draw exhaust gas in the recovery tank 50 out of the recovery tank 50.

Specifically, as shown in fig. 4, the water inlet 528 is disposed in the recycling bin body 52, the converging member 63 is connected with the water inlet 528 at the bottom of the floor brush assembly 30, and one end of the converging member 63 away from the water inlet 528 is disposed between the cleaning structure 60 and the recycling bin 50 and is close to the floor, so that the waste water and the waste gas after the cleaning structure 60 cleans the floor can be converged by the converging member 63 and flow into the recycling bin body 52 through the water inlet 528. The connecting cover 51 is provided with a connecting port 514, one end of the pipeline 27 is connected with the exhaust channel 304, and the other end of the pipeline is connected with the inner cavity of the connecting cover 51 through the connecting port 514 so as to pump off the waste gas in the recovery box 50, so that the waste gas is discharged out of the recovery box 50.

As shown in fig. 6, the recovery box 50 further includes a sealing member (not shown), a groove (not shown) for accommodating the sealing member is formed on one side of the recovery box body 52 adjacent to the connection cover 51, and an edge of the connection cover 51 extends into the groove and abuts against the sealing member, so that the connection cover 51 and the recovery box body 52 are in sealing connection. Specifically, the recovery tank body 52 includes a lower casing 524, the connection cover 51 includes an upper casing 515, a groove is provided in the lower casing 524 near an edge of the upper casing 515, and the upper casing 515 and the lower casing 524 are hermetically connected by a sealing member to seal the gas-liquid separation structure between the upper casing 515 and the lower casing 524. Preferably, the seal is a sealing ring.

The recovery box 50 is further provided with a locking structure (not shown), by which the recovery box body 52 and the connection cover 51 are detachably connected. Specifically, one end of the locking structure is connected to the upper housing 515, and the other end is connected to the lower housing 524, and when the locking structure is locked, the distance between the upper housing 515 and the lower housing 524 is pulled, and the sealing member is pressed to deform the sealing member, so that the sealing connection between the upper housing 515 and the lower housing 524 is realized. Preferably, two locking structures are provided, one on each side of the recovery tank 50.

In this embodiment, the recovery tank 50 is detachably disposed, and when the waste liquid storage reaches a certain amount, the connection cover 51 is detachably attached to clean the waste liquid in the recovery tank body 52. Of course, in other embodiments, the recovery tank body 52 and the connection cover 51 may be integrally formed, and the recovery tank 50 may be directly provided with a liquid outlet for discharging the waste liquid, which is not limited herein.

Referring to fig. 4 and 6, the gas-liquid separation structure includes a recovery storage cavity 541 formed in the recovery tank body 52 and a gas-liquid separation cavity 542 formed between the recovery tank body 52 and the connection cover 51, wherein the recovery storage cavity 541 is communicated with the gas-liquid separation cavity 542, the recovery storage cavity 541 is used for storing the waste liquid and the solid garbage after the gas-liquid separation, and the gas-liquid separation cavity 542 is communicated with the exhaust port 501 for exhausting the gas after the gas-liquid separation. One end of the gas-liquid separation chamber 542 communicates with the main suction opening 302 to perform gas-liquid separation of dirt sucked by the main suction opening 302, and the other end is connected to a suction device to discharge the separated off-gas to the outside through the suction device. Specifically, one end of the gas-liquid separation chamber 542 is connected to the cleaning structure 60 disposed at the front side of the floor brush assembly 30 through the water inlet 528 to receive dirt cleaned by the cleaning structure 60 and perform gas-liquid separation, and the other end is connected to the pipe 27 through the connection port 514 to discharge the separated exhaust gas outwards through the exhaust passage 304, and the recovery storage chamber 541 is communicated with the gas-liquid separation chamber 542 for collecting the waste liquid after gas-liquid separation.

Referring to fig. 5 and 6, the recovery tank 50 includes a first partition 520, the first partition 520 is disposed in the recovery tank body 52, and the first partition 520 divides an inner cavity of the recovery tank 50 into a gas-liquid separation chamber 542 and a recovery storage chamber 541. The first partition 520 has a first position with a high height and a second position with a low height away from the first position, and the second position is provided with a first water outlet 521, and the gas-liquid separation chamber 542 is communicated with the recovery storage chamber 541 through the first water outlet 521. In use, the gas-liquid separation chamber 542 separates waste gas from waste liquid, the waste gas is discharged to the outside of the recovery tank 50 through the exhaust passage 304, and the waste liquid flows into the recovery storage chamber 541 through the first water falling opening 521 for storage. In this embodiment, the gas-liquid separation chamber 542 is located above the first partition 520, the recovery storage chamber 541 is located below the first partition 520, the first water outlet 521 is formed on the first partition 520 and located at the lowest point in the gas-liquid separation chamber 542, and in one embodiment, the first water outlet 521 is provided with at least one and is located at an edge position of the first partition 520. Of course, in other embodiments, the gas-liquid separation chamber 542 and the recovery storage chamber 541 may be disposed in parallel, or may be disposed in a staggered manner, so that the recovery tank 50 may perform gas-liquid separation and waste liquid storage, which is not limited herein.

Referring to fig. 5, in one embodiment, the first position is near the middle, the second position includes two positions and is near two sidewalls, and the first water outlet 521 includes a plurality of water outlets and is spaced apart. The first separator 520 is provided with a water inlet 528, and the gas-liquid separation chamber 542 is communicated with the main suction opening 302 through the water inlet 528, and the water inlet 528 is arranged beside the first position.

In another embodiment, as shown in fig. 5 and 6, the first partition 520 is disposed in the recovery tank body 52 and is fixedly connected to the lower casing 524, and the water inlet 528 is located above the first partition 520. In another embodiment, the first partition 520 is inclined in the horizontal direction, the water inlet 528 is disposed near the highest point of the first partition 520 in the horizontal plane, and the first water outlet 521 is located at the lowest point of the first partition 520 in the horizontal plane, i.e., the first partition 520 is inclined to extend from the water inlet 528 side toward the first water outlet 521 side, so that the waste liquid entering from the water inlet 528 can be collected to the first water outlet 521 along the first partition 520 and then stored in the recovery storage chamber 541. Of course, in other embodiments, the first partition 520 may be disposed horizontally, and may be detachably connected to the lower casing 524, so as to facilitate cleaning and recycling of the waste liquid and the waste solids in the storage cavity 541, the water inlet 528 may be provided with a plurality of water inlets 521, and the first water outlet 521 may be provided in other numbers and located at any position of the first partition 520, which is not limited herein.

A water blocking rib (not shown) may be disposed in the recovery storage cavity 541, the water blocking rib being disposed opposite to the first water outlet 521, and at least a portion of the water blocking rib being connected to the first partition 520. Specifically, the water blocking rib is disposed on one side of the first water falling opening 521 far away from the advancing direction of the floor washer 100, and the water blocking rib can partially cover the first water falling opening 521, so that when the floor washer 100 shakes or tilts, the water blocking rib can limit the waste liquid in the recovery storage box, and the waste liquid is prevented from flowing into the gas-liquid separation cavity 542 through the first water falling opening 521.

Referring to fig. 6, the gas-liquid separation structure further includes an airflow channel 543, a partition plate 512 and an air outlet 501 formed on the partition plate 512 are disposed in the connection cover 51, the airflow channel 543 is formed between the partition plate 512 and the upper housing 515, and the air outlet 501 and the connection port 514 are respectively disposed at two ends of the airflow channel 543, so that one end of the airflow channel 543 is communicated with the inner cavity of the recovery box body 52 through the air outlet 501, and the other end is connected with the pipe 27 through the connection port 514, and then the exhaust gas in the recovery box body 52 can be discharged out of the recovery box 50 by using the exhaust channel 304. In the present specification, the inner chamber is a generic term for the gas-liquid separation chamber 542 and the recovery storage chamber 541.

That is, the first partition 520 and the lower case 524 define the recovery storage chamber 541, the gas-liquid separation chamber 542 is formed between the first partition 520 and the partition 512, and the partition 512 and the upper case 515 define the gas flow passage 543. That is, the recovery storage chamber 541 is disposed in the recovery tank body 52, the gas-liquid separation chamber 542 is disposed at a junction between the connection cover 51 and the recovery tank body 52, the gas flow passage 543 is disposed in the connection cover 51, and the gas flow passage 543, the gas-liquid separation chamber 542, and the recovery storage chamber 541 are arranged in an overlapping manner.

Referring to fig. 6, the partition plate 512 is disposed obliquely on a horizontal plane, so that the air channel 543 extends from the inside of the recovery box body 52 to the outside in a shrinking manner, specifically, a height between an end of the partition plate 512 facing the backward direction of the scrubber 100 and the ground is greater than a height between an end of the partition plate near the forward direction of the scrubber 100 and the ground, the air outlet 501 is formed at an end of the partition plate 512 lower than the horizontal plane, the connection port 514 is formed at an end of the partition plate 512 higher than the horizontal plane, that is, the air outlet 501 is formed at an end of the partition plate 512 far from the water inlet 528, and the connection port 514 is formed at an end of the partition plate 512 near the water inlet 528. Of course, in other embodiments, the partition plate 512 may be disposed horizontally, and the present utility model is not limited to the inclination angle of the partition plate 512 in the connection cover 51.

So set up for the spiral case fan 21 at the during operation, waste gas can get into airflow channel 543 through gas vent 501 from gas-liquid separation chamber 542, even have some waste liquid to mix in the waste gas this moment, then the waste liquid that mixes in the waste gas also can be contacted with division board 512 to collect on division board 512, finally slide towards gas vent 501 along the division board 512 that the slope set up, finally get into gas-liquid separation chamber 542 through gas vent 501, later get into and retrieve storage chamber 541 and store, guaranteed the further separation of waste gas and waste liquid.

Referring to fig. 6, the connection cover 51 further includes a second partition 511 extending vertically downward, wherein the second partition 511 is fixedly connected to the partition 512 and extends from the lower surface of the partition 512 toward the first partition 520 to be close to the first partition 520 until a gap 519 is left between the end of the second partition 511 away from the partition 512 and the first partition 520. That is, the second partition 511 is accommodated in the gas-liquid separation chamber 542, and the lower edge of the second partition 511 is lower than the upper edge of the water inlet 528 in the vertical direction, and the second partition 511 is located between the water inlet 528 and the exhaust port 501 and is disposed near the water inlet 528 in the horizontal direction to restrict the waste water and the exhaust gas entering from the water inlet 528 from being directly discharged from the exhaust port 501.

The first partition plate 520, the second partition plate 511, and the partition plate 512 enclose a cavity 517, and the cavity 517 communicates with the gas-liquid separation chamber 542 through a gap 519 between the second partition plate 511 and the first partition plate 520.

The recovery tank body 52 further includes a water inlet pipe (not shown) fixedly connected to the first partition 520, one end of which communicates with the cavity 517 through the water inlet 528, and the other end of which is connected to the confluence member 63, so as to achieve the connection of the recovery tank body 52 and the cleaning structure 60. Specifically, the water inlet pipe extends from the first partition 520 toward the partition plate 512, and the water inlet pipe extends to a height greater than the gap 519 between the second partition 511 and the first partition 520, so that the wastewater is hit on the partition plate 512 after flowing in from the water inlet pipe, then flows toward the first partition 520 under interception of the second partition 511, and finally enters into the recovery storage cavity 541 through the first water falling opening 521. The exhaust gas enters the cavity 517 through the water inlet pipe, enters the gas-liquid separation chamber 542 through the gap 519 between the first partition plate 520 and the second partition plate 511 and the first water outlet 521 provided at both sides of the second partition plate 511, and finally enters the gas flow passage 543 through the exhaust port 501, and is discharged out of the recovery tank 50.

Referring to fig. 6, a third partition plate 525 is further disposed in the gas-liquid separation chamber 542 and fixedly connected to the first partition plate 520, the third partition plate 525 is disposed between the second partition plate 511 and the exhaust port 501, and the third partition plate 525 is used for preventing dirt entering from the water inlet 528 from approaching the exhaust port 501. In one embodiment, the third partition 525 is disposed in parallel with the second partition 511. The third partition plate 525 protrudes from the first partition plate 520 toward the partition plate 512, and the protruding height of the third partition plate 525 is greater than the height of the gap 519 between the second partition plate 511 and the first partition plate 520 to prevent the waste liquid entering from the water inlet 528 from approaching the exhaust port 501.

Referring to fig. 6, the recovery tank 50 has a water receiving area 502 facing the air outlet 501, and two ends of the water receiving area 502 are provided with a second water outlet (not shown) far from the air outlet 501, and the second water outlet is connected with the air-liquid separation chamber 542 and the recovery storage chamber 541. The recovery tank body 52 includes a first portion forming at least part of the gas-liquid separation chamber 542 and a second portion forming at least part of the recovery storage chamber 541, the first partition 520 is formed at the first portion, the water receiving area 502 is integrally formed at the second portion, and the water receiving area 502 is closer to the rolling brush than the first partition 520.

A gap (not shown) is provided between the third partition 525 and the lower casing 524, and the gaps are provided at both ends of the third partition 525 and correspond to the first water falling openings 521, respectively, so that the waste liquid collected in the air flow channel 543 can pass through the gaps and enter the recycling storage cavity 541 through the first water falling openings 521. Preferably, the first partition 520 between the notch and the first water outlet 521 is inclined, so that the waste liquid passing through the notch can flow into the first water outlet 521 quickly.

Further, the connection cover 51 further includes a fourth partition plate 529 extending into the air flow channel 543 for preventing waste liquid entering from the water inlet 528 from entering the connection port 514 through the air outlet 501, and finally preventing the liquid from entering the suction device. A fourth partition 529 is provided at an end of the airflow path away from the exhaust port 501.

Third embodiment

As shown in fig. 11 and 12, the third embodiment is basically the same as the first and second embodiments, except that the supply tank 22, the power supply unit 23, and the water pump 65 are located at the rear of the main body 20, so that the water supply to the supply tank 22 can be conveniently performed when the user starts or ends operating the machine.

In summary, the floor scrubber 100 of the present utility model, by arranging the recovery tank 50 in the floor brush assembly 30, the rotation angle of the main body 20 is larger, so that the floor scrubber is convenient to clean the under-bed or other working surfaces with lower positions, and even if the main body 20 falls down, sewage is not caused to enter the position of the volute fan 21, thus solving the problem that the floor scrubber 100 cannot lie flat and clean; meanwhile, after the recovery box 50 is arranged in the floor brush assembly 30, the weight of the main body 20 is reduced, the main body is lighter and lighter, and the use of a user is easier; in addition, through setting up spiral case fan 21 in the scrubbing brush subassembly 30, utilize spiral case fan 21's volume advantage for suction device even install on scrubbing brush subassembly 30 also can not cause scrubbing brush subassembly 30 oversize, is favorable to scrubbing brush subassembly 30's miniaturization.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A floor brush assembly (30), comprising:

a housing (301), wherein a main suction port (302) is formed on the housing (301);

the rolling brush (61) is arranged on the shell (301), and the sewage which is collected in an auxiliary mode by the rolling brush (61) is collected through the main suction port (302);

the suction device is arranged in the shell (301), the suction device comprises a vacuum source motor, the vacuum source motor is a volute fan (21), and the volute fan (21) is provided with an air inlet (211) and an air outlet (212);

Recovery box (50), recovery box (50) set up in casing (301), recovery box (50) are configured to the storage spiral case fan (21) follow main suction inlet (302) inhaled filth, spiral case fan (21) include wind channel spare (213) and wind parts (214), wind channel spare (213) include first wind channel spare (2131) and second wind channel spare (2132), wind channel spare (214) set up in first wind channel spare (2131), air intake (211) set up in the downside of first wind channel spare (2131), second wind channel spare (2132) intercommunication is in between recovery box (50) and air intake (211), air outlet (212) set up in at least one side of direction about first wind channel spare (2131).

2. The floor brush assembly (30) according to claim 1, wherein the roll brush (61), the recovery tank (50) and the suction device are arranged in this order in the front-rear direction of travel of the floor brush assembly (30).

3. The floor brush assembly (30) of claim 2, wherein the floor brush assembly (30) has a size in the fore-aft direction in the range of 240mm-280mm; and/or

The minimum distance between the center of the volute fan (21) and the axis of the rolling brush (61) is 180-217 mm.

4. The floor brush assembly (30) according to claim 1, wherein the rolling brushes (61) and the recovery tank (50) are arranged in order in the front-rear direction, and the suction device and the recovery tank (50) are arranged side by side in the left-right direction perpendicular to the front-rear direction.

5. The floor brush assembly (30) of claim 4, wherein the floor brush assembly (30) has a size in the fore-aft direction in the range of 180mm-220mm; and/or

The minimum distance between the center of the volute fan (21) and the axis of the rolling brush (61) is 64-124 mm.

6. The floor brush assembly (30) of claim 1, wherein the floor brush assembly (30) has a height in the range of 67mm to 106mm.

7. The floor brush assembly (30) of claim 1, wherein the scroll blower (21) is mounted vertically, the axis of the scroll blower (21) being substantially parallel to the direction of travel; or (b)

The spiral case fan (21) is obliquely arranged, the axis of the spiral case fan (21) is arranged at an angle with the advancing direction, and the angle range is 40-80 degrees; or (b)

The spiral case fan (21) is transversely installed, and the axis of the spiral case fan (21) is basically vertical to the advancing direction.

8. The floor brush assembly (30) according to claim 1, wherein a roller (303) is provided on the housing (301) to enable the floor brush assembly (30) to move on the floor by the roller (303), and the roller brush (61), the recovery tank (50), the suction device and the roller (303) are arranged in this order along the front-rear direction of travel of the floor brush assembly (30).

9. The floor brush assembly (30) according to claim 1, wherein an exhaust passage (304) is further provided in the housing (301), the air inlet (211) is in communication with the recovery tank (50), and the air outlet (212) is in communication with an air inlet end of the exhaust passage (304).

10. The floor brush assembly (30) according to claim 9, wherein at least one side of the left-right direction of the housing (301) is provided with an air outlet hole (26), the air outlet hole (26) is located at least one side of the left-right direction of the housing (301), the air outlet hole (26) is communicated with an air outlet end of the air outlet channel (304), and an air inlet direction of the suction device is perpendicular to an air outlet direction of the suction device.

11. A floor washer (100), comprising:

the floor brush assembly (30) of any one of claims 1-10;

the main body (20) is arranged above the ground brush assembly (30) and is connected and fixed with the ground brush assembly (30) in a pivotable manner.

12. The floor scrubber (100) according to claim 11, wherein a connection (28) is connected between the main body (20) and the floor brush assembly (30), the volute fan (21) being located below the connection (28).

13. The floor scrubber (100) according to claim 12, wherein a roller (303) is arranged on the housing (301) to enable the floor brush assembly (30) to move over the floor by means of the roller (303), the volute fan (21) being located between the roller (303) and the connection (28).

14. The floor scrubber (100) according to claim 13, wherein a vertical plane perpendicular to the left-right direction is set as a reference plane, and the projection of the scroll fan (21) on the reference plane and the projection of the roller (303) on the reference plane at least partially coincide with each other.