CN112515559A

CN112515559A - Cleaning device

Info

Publication number: CN112515559A
Application number: CN202011158328.8A
Authority: CN
Inventors: 邹晨海; 梅飞翔; 胡斯特; 曹国新; 陈鹏
Original assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-03-19

Abstract

The application provides a cleaning device, includes: a roll brush for contacting the ground in a rotating manner; a spray assembly having a spray port disposed adjacent to the roll brush; a fan assembly for providing positive pressure to the jetting assembly to output a jet stream through the jet orifice, the jet stream acting on the roller brush; the jet air flow has a motion component along the tangential direction of the intersection point of the roller brush and the jet air flow, and the direction of the motion component and the motion direction of the intersection point are opposite to each other. Through the mode, the hair can tend to be separated from the rolling brush under the action of the jet air flow, and then the probability of winding the hair on the rolling brush is reduced, so that the cleaning capacity of the cleaning device is improved.

Description

Cleaning device

Technical Field

The application belongs to the technical field of household appliances, and particularly relates to a cleaning device.

Background

At present, in the daily or industrial production process of a house, an indoor garbage cleaning process is inevitably carried out, and the garbage mainly comprises: dust, debris, hair, etc. Various cleaning devices (e.g., sweeping robots, etc.) have been developed to free the hands of people.

However, the rolling brush contacting the floor is often wound with hairs during the cleaning process, and the normal cleaning process may be affected and the cleaning device may be damaged when the hairs are seriously wound.

Disclosure of Invention

The application provides a cleaning device to solve the technical problem that the rolling brush easily twines hair.

In order to solve the technical problem, the application adopts a technical scheme that: there is provided a cleaning device including: a roll brush for contacting the ground in a rotating manner; a spray assembly having a spray port disposed adjacent to the roll brush; a fan assembly for providing positive pressure to the jetting assembly to output a jet stream through the jet orifice, the jet stream acting on the roller brush; the jet air flow has a motion component along the tangential direction of the intersection point of the roller brush and the jet air flow, and the direction of the motion component and the motion direction of the intersection point are opposite to each other.

Wherein the cleaning device comprises two rolling brushes, the rotating shafts of the two rolling brushes are parallel to each other and are arranged at intervals, the projection of the jet opening along the main jet direction of the jet opening falls in an interval area between the two rolling brushes, and the jet air flow acts on the two rolling brushes at the same time.

Wherein a projection of the injection port in a main injection direction of the injection port is located outside the roll brush, and the injection port and the roll brush have a first spacing distance therebetween in the main injection direction, the first spacing distance being less than or equal to 20 mm.

Wherein the ejection port and the roll brush have a second spacing distance therebetween in a direction perpendicular to the main injection direction, the second spacing distance being less than or equal to 10 mm.

The cleaning device further comprises a collecting assembly, the collecting assembly is provided with an air suction port adjacent to the rolling brush, and the fan assembly further provides negative pressure for the collecting assembly so as to output entrainment airflow through the air suction port.

Wherein, along the vertical direction, the air suction port is close to the fan assembly relative to the jet opening, a third spacing distance is arranged between the jet opening and the air suction port, and the third spacing distance is 1 to 1.5 times of the diameter of the rolling brush.

Wherein a preset included angle is formed between the main suction direction of the air suction port and the main injection direction, and the preset included angle is 30-60 degrees.

Wherein the main injection direction is a vertical direction, the vertical direction is a first horizontal direction, and the rotation shaft of the roll brush is disposed in a second horizontal direction perpendicular to the vertical direction and the first horizontal direction.

In order to solve the above technical problem, another technical solution adopted by the present application is: there is provided a cleaning device including: a roll brush for contacting the ground in a rotating manner; a spray assembly having a spray port disposed adjacent to the roll brush; and the fan assembly is used for providing positive pressure to the jetting assembly so as to output jetting airflow through the jetting port.

Wherein the air jet and the air entrainment flow cooperate to form an annular vortex, and the hairs tend to separate from the roller brush under the action of the annular vortex.

Being different from the prior art situation, the beneficial effect of this application is: the cleaning device provided by the application comprises a rolling brush, a spraying assembly and a fan assembly; the fan assembly can provide positive pressure to the spraying assembly, so that the spraying opening can output spraying air flow which can act on the rolling brush; the jet air flow has a component of motion in a direction tangential to the intersection of the roller brush and the jet air flow, which is opposite to the direction of motion of the roller brush at the intersection. When the rolling brush is provided with hairs, the moving direction of the hairs is consistent with that of the rolling brush, and the hairs tend to be separated from the rolling brush under the action of the jet air flow, so that the probability of the hairs winding on the rolling brush is reduced, and the sweeping capacity of the cleaning device is improved; and in this application, make the mode that the injection subassembly produced the jet stream through fan subassembly originally, can need not to introduce extra air supply unit, reduce the degree of change to original cleaning device overall arrangement as far as possible, the cost is lower.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic view of an embodiment of a cleaning apparatus according to the present application;

FIG. 2 is a schematic structural view of the cleaning device shown in FIG. 1 with the upper cover removed;

FIG. 3 is a schematic structural view of one embodiment of the roller brush, the spray assembly, the collection assembly, and the fan assembly of FIG. 1;

FIG. 4 is a schematic structural view of another embodiment of the rolling brush, the spraying assembly, the collecting assembly and the fan assembly in FIG. 1;

FIG. 5 is a schematic structural view of another embodiment of the roller brush, the spraying assembly, the collecting assembly and the fan assembly in FIG. 1;

fig. 6 is a schematic structural diagram of an embodiment of the rolling brush, the spraying assembly and the collecting assembly in fig. 3 or 4.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1-2, fig. 1 is a schematic structural diagram of an embodiment of a cleaning device according to the present application, and fig. 2 is a schematic structural diagram of the cleaning device in fig. 1 after an upper cover is removed. The cleaning device 1 provided by the application can be a sweeping robot, a handheld dust collector and the like, and the application specifically uses the sweeping robot as an example for detailed description. The cleaning device 1 comprises an upper cover 10, a base 12 arranged opposite to the upper cover 10, a rolling brush assembly 14, a collection assembly 16, a battery assembly 18, an air duct assembly 11, a fan assembly (not shown),

driving wheel assemblies

13 and 15, an anti-collision assembly, a vision assembly and the like. The rolling brush assembly 14 comprises at least one rolling brush 140, the rolling brush 140 is generally used for being in contact with the ground in a rotating mode, the rolling brush assembly 14 can lift dirt such as dust, hair and the like on the ground, the fan assembly generates negative pressure during the operation of the cleaning device 1, and the dirt such as the dust, the hair and the like is sucked into the cleaning device 1 from a rolling brush opening of the rolling brush assembly 14 along with air flow; airflow and dirt such as dust, hair and the like enter the collecting assembly 16 through the rolling brush assembly 14, the dirt such as dust, hair and the like are collected in a dust box in the collecting assembly 16, and the airflow passes through the collecting assembly 16, is sucked by the fan and then is exhausted after passing through the air duct assembly 11.

In order to reduce the possibility of hair entanglement on the rolling brush 140, as shown in fig. 3, fig. 3 is a schematic structural view of an embodiment of the rolling brush, the spraying assembly, the collecting assembly and the fan assembly in fig. 1. The cleaning device 1 provided by the present application may further include a spraying assembly 17, the spraying assembly 17 has a spraying port 170 disposed adjacent to the rolling brush 140, and the spraying port 170 may be in the shape of a right-angled rectangle, a rounded rectangle, or the like; one end of the spraying assembly 17 is connected to an air source, which can provide positive pressure to the spraying assembly 17, so that the spraying air flow output through the spraying port 170 can act on the rolling brush 140, and the spraying air flow is used for making the hair rolled up by the rolling brush 140 tend to separate from the rolling brush 140, thereby reducing the probability of the hair winding on the rolling brush 140, and improving the sweeping capability of the cleaning device 1.

In one application scenario, the spraying assembly 17 may include a first air flow pipe 172 and a spraying head 174 at one end of the first air flow pipe 172, wherein the opening of the spraying head 174 towards the side of the rolling brush 140 forms the spraying opening 170; the other end of the first air flow pipe 172 is connected to an air source, the air source can provide positive pressure to the spraying assembly 17, the first air flow pipe 172 is used for guiding the spraying air flow to the spraying head 174, and the first air flow pipe 172 may be linear or curved, and may be specifically set according to the internal space layout of the cleaning apparatus 1. In addition, the shape of the spray head 174 may be as shown in fig. 3, including a first hollow segment 1740 and a second hollow segment 1742 connected to each other, and the second segment 1742 and the first segment 1740 may form an included angle therebetween, which may be a right angle, an obtuse angle, or the like. The end of the first segment 1740 not connected to the second segment 1742 communicates with the first airflow duct 172, and the end of the second segment 1742 not connected to the first segment 1740 faces the roller brush 140 and forms the ejection port 170. Of course, in other embodiments, the shape of the nozzle 174 may be other, and the present application is not limited thereto. Alternatively, the spray module 17 may not include the spray head 174, and one end of the first air flow duct 172 directly faces the roll brush 140 and the spray port 170 is formed toward one end of the roll brush 140.

Further, as shown in fig. 3, the fan assembly 19 in the cleaning device 1 may serve as the air supply for the spray assembly 17. In this embodiment, the fan assembly 19 may include a fan 190 and other components (e.g., a damper ring located around the periphery of the fan 190, etc.); the blower 190 includes an air inlet a and an air outlet B, and one end of the first airflow pipeline 172 in the spraying assembly 17 may be communicated with the air outlet B, that is, a part of the clean airflow discharged from the air outlet B of the blower 190 may be ejected through the spraying assembly 17, and a part of the clean airflow may be directly discharged out of the cleaning apparatus 1. The design mode can reduce the change degree of the original cleaning device 1 layout as far as possible without introducing an additional air source device, and has lower cost. Furthermore, due to the internal layout of the cleaning device 1, the first air flow duct 172 may comprise a straight pipe section and a bent/bent section, wherein the bent/bent section may be in communication with the air outlet B of the fan 190 and the straight pipe section may be in communication with the spray head 174.

Through a large number of experiments and theoretical analysis, it is found that the main factor influencing the hair winding is the number of windings of the hair on the rolling brush 140, and when the number of windings of the hair on the rolling brush 140 exceeds one, the winding state of the hair tends to be stable, and the hair cannot be removed by increasing the suction force of the fan 190 or increasing the number of revolutions of the rolling brush 140. In order to reduce the probability of entanglement of the hair, the solution used in the present application is to prevent further entanglement before the hair is wound one turn, in addition to cutting the hair directly. Specifically, the spraying assembly 17 may be located outside the roller brush 140, the spraying airflow from the spraying opening 170 is sprayed outward in a substantially fan shape, and the spraying airflow has a movement component V1 along a tangential direction of a crossing point P of the roller brush 140 and the spraying airflow, and a direction of the movement component V1 and a movement direction V2 of the crossing point P are opposite to each other, and the spraying airflow of the movement component V1 is equivalent to provide an outward dragging force for separating the hairs from the roller brush 140, thereby reducing the probability of the hairs being entangled on the roller brush 140.

Of course, in other embodiments, the injection assembly 17 may be at least partially located within the roller brush 140, for example, the first air flow duct 172 of the injection assembly 17 may extend from an air source outside the roller brush 140 to the interior of the roller brush 140, and the injection port 170 may be directly disposed on the surface of the roller brush 140; at this time, regardless of whether the rolling brush 140 is in a counterclockwise motion state along the rotation axis, a clockwise motion state along the rotation axis, or a stationary state, the jet ports 170 may directly jet the air flow outward, so that the hairs on the surface of the rolling brush 140 are separated from the rolling brush, and the probability of the hairs being entangled on the rolling brush may also be reduced.

In general, the cleaning device 1 may include two rolling brushes 140, and referring to fig. 3, when the two rolling brushes 140 are closer and the rotation directions of the two rolling brushes 140 are opposite, that is, one is in counterclockwise rotation and the other is in clockwise rotation, the two rolling brushes 140 may share one spraying assembly 17 to save space and reduce cost. Specifically, the rotation axes of the two roll brushes 140 may be arranged in parallel to and spaced apart from each other, and the projection of the jet opening 170 in the main injection direction (as indicated by a vertically downward dotted arrow in fig. 3) of the jet opening 170 falls within the spaced area between the two roll brushes 140, and the jet air flows simultaneously act on the two roll brushes 140. The main injection direction may be a central axis direction of the injection port 170 or a highest flow velocity direction. Preferably, the main injection direction is a vertical direction, and the rotation axis of the roll brush 140 is disposed in a second horizontal direction perpendicular to the vertical direction. For example, as shown in fig. 3, when the left roll brush 140 moves in a counterclockwise direction and the right roll brush 140 moves in a clockwise direction, the injection port 170 may be located at an upper position of the two roll brushes 140 with the main injection direction of the injection air flow directed downward. Further, the jet port 170 has a first length L1 in the direction of the rotation axis of the roll brush 140, the roll brush 140 has a second length L2 in the direction of the rotation axis thereof, and the first length L1 may be equal to or greater than the second length L2 to secure the action area of the jet air flow.

Of course, in other embodiments, please refer to fig. 4, fig. 4 is a schematic structural diagram of another embodiment of the rolling brush, the spraying assembly, the collecting assembly and the fan assembly in fig. 1. The cleaning device 1 may also comprise a roller brush 140a, and no matter how many roller brushes 140a the cleaning device 1 comprises, a spraying assembly 17a as described above may be arranged at each position of the roller brush 140a, and only one roller brush 140a is schematically shown in fig. 4. When the roll brush 140a moves in the clockwise direction in fig. 4, the ejection port 170a may be provided at an upper left position of the roll brush 140a, and a main injection direction of the injection air flow output in the ejection port 170a may be directed downward in the vertical direction. Of course, in other embodiments, the main injection direction of the injection airflow output in the injection port 170a may also be inclined to the lower left as long as it has a motion component directed downward in the vertical direction.

And when the rolling brush 140b moves in the counterclockwise direction, as shown in fig. 5, fig. 5 is a schematic structural view of another embodiment of the rolling brush, the spraying assembly, the collecting assembly and the fan assembly in fig. 1. At this time, the ejection port 170b may be provided at a right upper position of the roll brush 140b, with the main ejection direction of the ejection airflow output in the ejection port 170b facing downward in the vertical direction. Of course, in other embodiments, the main injection direction of the injection airflow output in the injection port 170b may also be inclined downward to the right as long as it has a motion component directed downward in the vertical direction.

In addition, as shown in fig. 6, fig. 6 is a schematic structural view of an embodiment of the rolling brush, the spraying assembly and the collecting assembly in fig. 3 or fig. 4. In order to make the intensity of the jet air flow large, the distance between the jet port 170 and the roll brush 140 may be made small. A projection of the injection port 170 in a main injection direction (indicated by a vertically downward dotted arrow in fig. 6) of the injection port 170 is located outside the roll brush 140, and a first spacing distance d1 is provided between the injection port 170 and the roll brush 140 in the main injection direction, and the first spacing distance d1 is less than or equal to 20 mm. For example, the first preset distance d1 may be 15mm, 10mm, 5mm, 0mm, etc. And/or, the jet port 170 and the roll brush 140 have a second spacing distance d2 therebetween in a direction perpendicular to the main injection direction, the second spacing distance d2 being less than or equal to 10 mm. For example, the second preset distance d2 may be 8mm, 5mm, 3mm, 0mm, etc. Preferably, when the main injection direction is a vertical direction, the vertical direction is a first horizontal direction, and the rotation shaft of the roll brush 140 is disposed in a second horizontal direction perpendicular to the vertical direction and the first horizontal direction.

In addition, referring again to fig. 3, the collecting assembly 16 may include a dust box 160 and a suction pipe 162, one end of the suction pipe 162 near the roller brush 140 is opened to form a suction port 164, the other end of the suction pipe 162 is communicated with the inlet of the dust box 160, and the outlet of the dust box 160 is communicated with the air inlet a of the fan 190. The fan 190 is further configured to provide negative pressure to the collecting assembly 16, and an entrainment airflow is generated at the air suction port 164 of the collecting assembly 16, which is disposed adjacent to the roller brush 140, and the ejection airflow and the entrainment airflow cooperate to form an annular vortex; when dirt such as dust, hair, etc. is drawn into the circular vortex structure by the roller brush 140 and the negative pressure, the hair moves along a circular motion track from bottom to top at the roller brush 140 under the influence of the circular vortex structure, the hair tends to be separated from the roller brush 140 by the circular vortex, and the separated hair can enter the dust box 160 along with the entrainment air flow.

In order to make the hairs sucked into the collecting unit 16 by the jetting and entrainment air flows without affecting the formation of the circular vortex, the positional relationship between the above-mentioned suction port 164 and the jet port 170 has the following limitations: referring again to fig. 6 and 3, in a direction perpendicular to the main injection direction (e.g., a vertical downward dashed arrow in fig. 6), the injection port 170 is disposed away from the fan assembly 19 relative to the suction port 164; and a third spacing distance d3 is provided between the ejection opening 170 and the suction opening 164 along the vertical direction, the third spacing distance d3 being 1 to 1.5 times the diameter of the roll brush 140. For example, the third separation distance d3 is 1.2 times, 1.4 times, etc., the diameter of the roller brush 140.

For example, as shown in fig. 3, when one injection assembly 17 is disposed between two adjacently disposed roll brushes 140, the injection ports 170 of the injection assembly 17 and the suction ports 164 of the collection assembly 16 are respectively located on both sides of the rotational axis of the adjacent roll brush 140 (e.g., the right roll brush 140 in fig. 3) in the projection of the main injection direction.

For another example, as shown in fig. 4, when one roll brush 140a is included in the cleaning device 1 and the roll brush 140a is rotated clockwise, the injection port 170a and the suction port 164a may both be located above the roll brush 140a, and the projections of the injection port 170a and the suction port 164a in the main injection direction are located on both sides of the rotation axis of the adjacent roll brush 140a, respectively.

For another example, as shown in fig. 5, when one roll brush 140b is included in the cleaning device 1 and the roll brush 140b is rotated counterclockwise, the injection port 170b and the suction port 164b may both be located above the right side of the roll brush 140b, i.e., the projections of the injection port 170b and the suction port 164b in the main injection direction are located on the same side of the rotation axis of the adjacent roll brush 140 b.

In addition, referring to fig. 6 again, in order to make the collecting assembly 16 absorb dirt such as dust and hair well, the main suction direction of the suction port 164 and the main injection direction have a predetermined angle therebetween, which is 30 ° -60 ° (e.g., 40 °, 50 °, etc.). Here, the main suction direction of the suction port 164 may be as indicated by a diagonally upward dotted arrow in fig. 6, which may be the axial direction of the suction port.

In summary, when there are hairs on the roller brush 140, the moving direction of the hairs is the same as that of the roller brush 140, and the hairs tend to separate from the roller brush 140 by the action of the introduced jet air flow of the jet assembly 17, so that the probability of the hairs winding around the roller brush 140 is reduced to improve the sweeping ability of the cleaning apparatus 1.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims

1. A cleaning device, comprising:

a roll brush for contacting the ground in a rotating manner;

a spray assembly having a spray port disposed adjacent to the roll brush;

a fan assembly for providing positive pressure to the jetting assembly to output a jet stream through the jet orifice, the jet stream acting on the roller brush;

the jet air flow has a motion component along the tangential direction of the intersection point of the roller brush and the jet air flow, and the direction of the motion component and the motion direction of the intersection point are opposite to each other.

2. The cleaning apparatus of claim 1,

the cleaning device comprises two rolling brushes, rotating shafts of the two rolling brushes are parallel to each other and arranged at intervals, a projection of the jet orifice along a main jet direction of the jet orifice falls in an interval area between the two rolling brushes, and the jet air flow acts on the two rolling brushes at the same time.

3. The cleaning apparatus of claim 1,

the projection of the jet orifice along the main injection direction of the jet orifice is positioned outside the rolling brush, and a first spacing distance is arranged between the jet orifice and the rolling brush along the main injection direction, and the first spacing distance is less than or equal to 20 mm.

4. The cleaning apparatus of claim 3,

the jet port and the roll brush have a second spacing distance therebetween in a direction perpendicular to the main injection direction, the second spacing distance being less than or equal to 10 mm.

5. The cleaning apparatus of claim 4,

6. The cleaning apparatus of claim 5,

along the vertical direction, the air suction port is close to the fan assembly relative to the jet port, and a third spacing distance is arranged between the jet port and the air suction port and is 1-1.5 times of the diameter of the rolling brush.

7. The cleaning apparatus of claim 5,

and a preset included angle is formed between the main suction direction of the air suction port and the main injection direction, and the preset included angle is 30-60 degrees.

8. The cleaning device according to any one of claims 4 to 7,

the main injection direction is a vertical direction, the vertical direction is a first horizontal direction, and the rotating shaft of the roll brush is arranged in a second horizontal direction perpendicular to the vertical direction and the first horizontal direction.

9. A cleaning device, comprising:

a roll brush for contacting the ground in a rotating manner;

a spray assembly having a spray port disposed adjacent to the roll brush;

and the fan assembly is used for providing positive pressure to the jetting assembly so as to output jetting airflow through the jetting port.

10. The cleaning apparatus defined in claim 9, further comprising a collection assembly having an intake port disposed adjacent the roller brush, the fan assembly further providing a negative pressure to the collection assembly to output a suction airstream through the intake port.

11. The cleaning apparatus of claim 10,

the air jet and the air entrainment flow cooperate to form an annular vortex, and the hairs tend to separate from the roller brush under the action of the annular vortex.