CN218760523U - Fan module and cleaning robot - Google Patents

Abstract

The utility model belongs to intelligence cleaning device field discloses a fan module and cleaning machines people. The fan module comprises a shell assembly, a motor, an impeller and an air duct partition plate. An air duct is defined in the shell assembly and comprises an air inlet cover, a volute and an air outlet cover; the air inlet cover is provided with an air inlet, and the air outlet cover is provided with an air outlet; the volute comprises an inner shell, an outer shell and an air guide part, wherein the outer shell is sleeved outside the inner shell, a main air duct is formed between the outer shell and the inner shell, and the air guide part is connected between the inner shell and the outer shell; the motor is arranged in the inner shell; the impeller is arranged on the inner side of the air inlet cover and is connected with the output shaft of the motor; the air duct partition plate is arranged between the inner shell and the outer shell and located at an outlet of the main air duct, the air duct partition plate comprises an air outlet area and a non-air outlet area which are circumferentially arranged, and an air outlet hole is formed in the air outlet area. The air guide part enables fluid to spirally flow in the main air duct, and turbulence is reduced. The fluid flowing to the non-air-outlet area needs to continuously flow in the main air duct until the fluid flows out of the main air duct through the air outlet hole of the air-outlet area, so that the flow path is prolonged, the turbulent flow is reduced, and the noise is reduced.

Description

Fan module and cleaning robot

Technical Field

The utility model relates to an intelligence cleaning device field especially relates to a fan module and cleaning machines people.

Background

The cleaning robot is provided with a spraying module, a water absorbing raking module and various cleaning modules, the cleaning modules can clean, polish and nurse a surface to be cleaned, the spraying assembly sprays water, cleaning solution or polishing solution and the like to the surface to be cleaned to assist the cleaning assembly to work, and the water absorbing raking module is arranged at the rear end of the advancing direction of the cleaning robot and used for recycling the cleaning waste liquid on the ground so as to ensure that the ground is clean and has no water mark.

The water absorption rake assembly comprises an installation frame and two rubber strips. Two adhesive tapes are respectively arranged on the front side and the rear side of the mounting frame. The two rubber strips, the mounting frame and the ground form an approximately sealed water suction cavity, the approximately sealed water suction cavity is communicated with a sewage tank on the cleaning robot through a pipeline, the pipeline is connected with a fan, an impeller of the fan rotates at a high speed to drive air in the pipeline to flow, so that the approximately sealed water suction cavity generates negative pressure, sewage on the ground enters the water suction cavity under the suction effect of the negative pressure, and finally flows into the sewage tank through the pipeline. However, the air duct in the existing fan is short, the mutual influence among flow fields is large, turbulence is easy to generate, and the noise in the air duct is large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fan module and cleaning machines people, noise at work is little, and the user uses and experiences well.

In order to realize the purpose, the following technical scheme is provided:

in a first aspect, a fan module is provided, comprising:

the shell assembly is internally provided with an air outlet channel and comprises an air inlet cover, a volute and an air outlet cover which are sequentially arranged; the air inlet cover is provided with an air inlet communicated with the air channel, and the air outlet cover is provided with an air outlet communicated with the air channel; the volute comprises an inner shell, an outer shell and a plurality of air guide parts, the outer shell is sleeved outside the inner shell at intervals, a main air duct is formed between the inner shell and the outer shell, the air guide parts are connected between the inner shell and the outer shell and positioned at an inlet of the main air duct, the plurality of air guide parts are arranged at intervals along the circumferential direction of the volute, and each air guide part inclines along the axial direction of the volute;

a motor disposed in the inner case;

the impeller is arranged on the inner side of the air inlet cover and is connected with an output shaft of the motor;

the air duct partition plate is arranged between the inner shell and the outer shell and located at the outlet of the main air duct, the air duct partition plate comprises an air outlet area and a non-air outlet area which are arranged along the circumferential direction, and an air outlet hole is formed in the air outlet area.

Optionally, the air outlet cover, the volute and the air inlet cover are sequentially arranged from top to bottom;

the fan module further includes:

the air inlet pipeline is vertically arranged, the lower port of the air inlet pipeline is communicated with an air inlet on the air inlet cover, and the upper port of the air inlet pipeline is communicated with a water suction cavity of the water suction rake through a first switching pipeline;

the air outlet pipeline is vertically arranged, an upper port of the air outlet pipeline is communicated with an air outlet on the air outlet cover, and a lower port of the air outlet pipeline is communicated with the sewage tank through a second switching pipeline.

Optionally, the air inlet is tangent to the inner wall of the air inlet cover; the air outlet is tangent to the inner wall of the air outlet cover.

Optionally, the method further comprises:

the first silencing piece is arranged between the inlet of the main air duct and the air inlet cover and sleeved outside the impeller;

and the second silencing piece is arranged in the main air duct and is positioned between the air guide part and the air duct partition plate.

Optionally, the air duct further comprises a third silencing piece, and the third silencing piece is arranged between the air duct partition plate and the air outlet cover.

Optionally, be provided with first louvre on the inner shell, the corresponding second louvre that is provided with on the shell, the inner shell with be provided with between the shell:

the two first stop plates are axially arranged at two ends of the first heat dissipation hole and the second heat dissipation hole respectively;

the two second stop plates are circumferentially arranged at two ends of the first heat dissipation hole and the second heat dissipation hole respectively; the two first stop plates and the two second stop plates are arranged in an enclosing manner to form a heat dissipation cavity separated from the main air duct;

a fourth silencing piece is arranged in the heat dissipation cavity, and a noise reduction cover plate covering the second heat dissipation hole is arranged on the outer side of the shell.

Optionally, a first sealing element is arranged between the motor and one end of the inner shell close to the inlet of the main air duct;

the air outlet cover comprises an inner cylinder, an outer cylinder and a connecting part, one end of the inner cylinder is circumferentially connected with the inner shell, one end of the outer cylinder is circumferentially connected with the outer shell, and the connecting part is connected with the other ends of the inner cylinder and the outer cylinder;

and a second sealing element is arranged at the joint of the inner cylinder and the inner shell.

Optionally, the air inlet cover is circumferentially connected with the outer shell, and a third sealing element is arranged at the joint of the air inlet cover and the outer shell;

and a fourth sealing element is arranged at the joint of the outer barrel and the shell.

Optionally, the impeller is directly opposite to the air inlet, and a fifth sealing element is arranged between the impeller and the circumferential edge of the air inlet.

In a second aspect, a cleaning robot is provided, which includes the above-mentioned fan module, and the cleaning robot further includes a water suction rake and a sewage tank, wherein the air inlet is communicated with the inside of the sewage tank, and sewage in the water suction rake is sucked into the sewage tank by using negative pressure.

The utility model has the advantages that:

the utility model provides a fan module, motor drive impeller are rotatory, and the impeller drives the inboard air current of air inlet lid and rotates in the lump to produce the negative pressure. Under the suction action of negative pressure, external fluid enters the air channel from the air inlet, and simultaneously, under the driving of the rotation of the impeller, the fluid on the inner side of the air inlet cover flows to the volute, spirally flows in the main air channel by taking the axial direction of the volute as an axis under the guide of the air guide part, then flows into the air outlet cover through the air outlet hole of the air channel partition plate, and then flows out through the air outlet of the air outlet cover. The air guide part is arranged at the air inlet of the main air duct to guide the flowing direction of fluid, so that the fluid spirally flows in the main air duct, the turbulence is reduced, and the noise is reduced. The air channel partition plate is circumferentially provided with an air outlet area and a non-air outlet area, fluid flowing to the outlet of the main air channel can only enter the air outlet cover through the air outlet holes in the air outlet area of the air channel partition plate, and the fluid flowing to the non-air outlet area needs to continue to flow in the main air channel until flowing out of the main air channel through the air outlet holes in the air outlet area, so that the flow path of the fluid is prolonged, the generation of turbulent flow is reduced, the mutual influence among the fluids is further reduced, and the noise is reduced.

The utility model provides a cleaning machines people, including foretell fan module, this cleaning machines people still includes to absorb water and takes off and the sewage case, and the air intake of fan module passes through the air intake pipeline and absorbs water the chamber intercommunication that absorbs water of taking off, and the air outlet of fan module passes through air outlet pipeline and sewage case intercommunication. The fan module enables the water suction cavity of the water suction rake to generate negative pressure so as to suck the sewage on the surface to be cleaned into the sewage tank through the water suction rake. The cleaning robot has the advantages of low working noise and good use experience of users.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a front view of a fan module according to an embodiment of the present invention;

fig. 2 is an isometric view of a fan module according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a fan module according to an embodiment of the present invention;

figure 4 is a first isometric view of a volute provided by an embodiment of the present invention;

fig. 5 is a second axial view of a volute provided in an embodiment of the present invention;

fig. 6 is a third isometric view of a volute provided by an embodiment of the present invention;

fig. 7 is an isometric view of an air duct partition provided by an embodiment of the present invention;

fig. 8 is an axonometric view of the air outlet cover provided by the embodiment of the present invention.

Reference numerals:

1. an air inlet cover; 2. a volute; 3. an air outlet cover; 4. an air duct partition plate; 5. an air intake pipeline; 6. an air outlet pipeline; 7. a first noise reducing member; 8. a second noise dampening member; 9. a third sound attenuating element; 10. a first seal member; 20. a buffer member; 30. a fifth seal member;

11. an air inlet;

21. an inner shell; 22. a housing; 23. a wind guide part; 24. a main air duct; 25. a first stopper plate; 26. a second stopper plate; 27. a fourth noise reduction member; 28. a noise reduction cover plate; 29. a heat dissipation cavity;

211. a first heat dissipation hole;

221. a second heat dissipation hole;

31. an inner barrel; 32. an outer cylinder; 33. a connecting portion; 34. an air outlet;

41. and (4) an air outlet.

Detailed Description

In order to make the technical problems, technical solutions adopted and technical effects achieved by the present invention clearer, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment provides a fan module, which can be used on a cleaning robot and is matched with a water sucking rake and a sewage tank on the cleaning robot for use.

As shown in fig. 1-5, the fan module of the present embodiment includes a housing assembly, a fan, an impeller, and an air duct partition 4. An air outlet channel is limited in the shell assembly, and the shell assembly specifically comprises an air inlet cover 1, a volute 2 and an air outlet cover 3 which are arranged in sequence; an air inlet 11 communicated with the air duct is arranged on the air inlet cover 1, and an air outlet 34 communicated with the air duct is arranged on the air outlet cover 3. The volute 2 comprises an inner shell 21, an outer shell 22 and a plurality of air guide portions 23, the outer shell 22 is sleeved outside the inner shell 21 at intervals, a main air duct 24 is formed between the inner shell 21 and the outer shell 22, the air guide portions 23 are connected between the inner shell 21 and the outer shell 22 and located at an inlet of the main air duct 24, the plurality of air guide portions 23 are arranged at intervals along the circumferential direction of the volute 2, and each air guide portion 23 inclines along the axial direction of the volute 2. The motor is disposed in the inner case 21. The impeller is arranged on the inner side of the air inlet cover 1 and is connected with an output shaft of the motor. The duct partition 4 is disposed between the inner casing 21 and the outer casing 22 and at the outlet of the main duct 24. Referring to fig. 7, the air duct partition plate 4 includes an air outlet region and a non-air outlet region arranged along the circumferential direction, and the air outlet region is provided with an air outlet 41.

Specifically, the motor drives the impeller to rotate, and the impeller drives the airflow inside the air inlet cover 1 to rotate together, so that negative pressure is generated. Under the suction action of negative pressure, external fluid enters the air channel from the air inlet 11, and meanwhile, under the driving of the rotation of the impeller, the fluid on the inner side of the air inlet cover 1 flows to the volute 2, and under the guiding of the air guiding part 23, the fluid spirally flows in the main air channel 24 by taking the axial direction of the volute 2 as an axis, then flows into the air outlet cover 3 through the air outlet holes 41 of the air channel partition plate 4, and then flows out through the air outlet 34 of the air outlet cover 3.

The external fluid may be a liquid, a gas, a liquid or a gas containing a certain amount of solid impurities, a gas containing a certain amount of liquid and solid impurities, or the like. When the fan module is used in cooperation with the water absorption rake, the external fluid is mainly liquid containing certain solid impurities.

The air inlet 11 of the main air duct 24 is provided with the air guiding portion 23 to guide the flowing direction of the fluid, so that the fluid spirally flows in the main air duct 24, turbulence is reduced, and noise is reduced. The air duct partition plate 4 is circumferentially provided with an air outlet area and a non-air outlet area, fluid flowing to the outlet of the main air duct 24 can only enter the air outlet cover 3 through the air outlet holes 41 in the air outlet area of the air duct partition plate 4, and the fluid flowing to the non-air outlet area needs to continue flowing in the main air duct 24 until flowing out of the main air duct 24 through the air outlet holes 41 in the air outlet area, so that the flow path of the fluid is prolonged, the generation of turbulent flow is reduced, the mutual influence among the fluids is further reduced, and the noise is reduced.

Optionally, the air outlet cover 3, the volute 2 and the air inlet cover 1 are sequentially arranged from top to bottom, that is, the housing assembly is inverted, the air inlet 11 is located at the bottom, the air outlet 34 is located at the upper portion, and the fluid flows from bottom to top in the air duct. The fan module further comprises an air inlet pipeline 5 and an air outlet pipeline 6. The air inlet pipeline 5 is vertically arranged, the lower port of the air inlet pipeline 5 is communicated with an air inlet 11 on the air inlet cover 1, and the upper port of the air inlet pipeline 5 is communicated with a water suction cavity of the water suction rake through a first switching pipeline; the air outlet pipeline 6 is also vertically arranged, the upper port of the air outlet pipeline 6 is communicated with the air outlet 34 on the air outlet cover 3, and the lower port of the air outlet pipeline 6 is communicated with the sewage tank through a second switching pipeline. Fluid sucked from the water suction cavity of the self-priming skimmer flows from top to bottom in the air inlet pipeline 5 to the air inlet 11 of the air inlet cover 1, then flows from bottom to top in the air duct to the air outlet 34 of the air outlet cover 3, and then flows from top to bottom in the air outlet pipeline 6. The shell assembly is inverted, and meanwhile the air inlet pipeline 5 and the air outlet pipeline 6 are vertically arranged, so that the flow path of fluid is further prolonged, the generation of turbulent flow is reduced, and the noise is reduced. In addition, the fluid flows through the air channel from top to bottom, so that the damage of the fluid to the motor can be reduced, and the service life of the fan module is prolonged.

Optionally, the air inlet 11 is tangent to the inner wall of the air inlet cover 1, fluid enters the air inlet cover 1 from the air inlet 11 in a tangential direction and flows along the inner wall of the air inlet cover 1 in a circumferential direction, the flow path is long, and the generation of turbulence in the air inlet cover 1 is reduced. Similarly, the air outlet 34 is tangent to the inner wall of the air outlet cover 3, and the fluid circularly flows along the inner wall of the air outlet cover 3, and the flow path is long, and finally tangentially flows out of the air outlet cover 3, so that the generation of turbulence in the air outlet cover 3 is reduced.

Optionally, the fan module further comprises a first silencer 7 and a second silencer 8. The first silencing part 7 is arranged between the inlet of the main air duct 24 and the air inlet cover 1 and is sleeved outside the impeller. The fluid is driven by the impeller to rotate at a high speed, the flow direction of the fluid accelerated by the impeller changes when the fluid enters the inlet of the main air duct 24, the impact between the fluids and the impact between the fluid and the inner wall of the main air duct 24 can be enhanced, and further noise is generated. The second silencer 8 is disposed in the main air duct 24 and between the air guiding portion 23 and the duct partition 4. The fluid spirally flows in the main air duct 24, the space of the main air duct 24 is large, and turbulence is difficult to avoid, and the second silencing piece 8 is arranged to buffer the impact between the fluids and the inner wall of the main air duct 24, so that the noise in the main air duct 24 is reduced, and the transmission of the noise to the outside is reduced.

Optionally, the fan module further includes a third silencing element 9, and the third silencing element 9 is disposed between the air duct partition plate 4 and the air outlet cover 3. When the fluid flows to the air outlet cover 3 from the air duct partition plate 4, the flow direction is changed to a certain extent, and the impact between the fluids and the inner wall of the air outlet cover 3 are buffered through the third silencing piece 9, so that the noise in the air outlet cover 3 is reduced, and the propagation of the noise to the outside is reduced.

Optionally, referring to fig. 3, 4 and 6, a first heat dissipation hole 211 is disposed on the inner shell 21, a second heat dissipation hole 221 is correspondingly disposed on the outer shell 22, and two first stop plates 25 and two second stop plates 26 are disposed between the inner shell 21 and the outer shell 22. The two first stop plates 25 are axially arranged at two ends of the first heat dissipation hole 211 and the second heat dissipation hole 221 respectively; the two second stop plates 26 are circumferentially arranged at two ends of the first heat dissipation hole 211 and the second heat dissipation hole 221; the two first stop plates 25 and the two second stop plates 26 enclose a heat dissipation cavity 29 separated from the main air duct 24; a fourth silencing part 27 is inserted into the heat dissipation cavity 29, and a noise reduction cover plate 28 covering the second heat dissipation hole 221 is arranged outside the shell 22. When the motor works, a large amount of heat and noise are generated, and a part of heat is radiated to the outside through the heat radiation cavity 29, so that the damage caused by overhigh temperature of the motor is avoided; meanwhile, the heat dissipation chamber 29 is also a good noise transmission channel, and the fourth noise damping member 27 is inserted in the heat dissipation chamber 29, so that heat dissipation is ensured and noise transmission to the outside is reduced. Through setting up the apron 28 of making an uproar of falling, further noise abatement is to external propagation, plays the guard action to fourth amortization piece 27 simultaneously, avoids external impurity to adhere to on fourth amortization piece 27.

Illustratively, the first sound deadening member 7, the second sound deadening member 8, the third sound deadening member 9 and the fourth sound deadening member 27 are sound absorbing cotton of polyester material, or various types of porous materials such as felt, chemical fiber felt, metal mesh and the like.

Optionally, a first sealing member 10 is disposed between the motor and an end of the inner casing 21 near the inlet of the main duct 24 for preventing fluid from entering the inner casing 21 from the end of the inner casing 21 near the inlet of the main duct 24. Referring to fig. 8, the outlet cover 3 includes an inner cylinder 31, an outer cylinder 32, and a connecting portion 33, wherein one end of the inner cylinder 31 is circumferentially connected to the inner casing 21, one end of the outer cylinder 32 is circumferentially connected to the outer casing 22, and the connecting portion 33 connects the other ends of the inner cylinder 31 and the outer cylinder 32; the junction of the inner tube 31 and the inner casing 21 is provided with a second sealing member for preventing fluid from entering the inner casing 21 from the end of the inner casing 21 near the outlet of the main duct 24. The first sealing element 10 and the second sealing element work together to enable the waterproof performance of the inner shell 21 to be good, and fluid is prevented from entering the inner shell 21 to damage the motor. Illustratively, the first seal 10 comprises a first seal ring. The second seal member includes a second seal ring. Wherein the first sealing ring includes a first end and a second end which are axially opposite, the first end is located at one end of the inner casing 21 close to the inlet of the main air duct 24. The outer ring of the first end is tightly matched with the inner shell 21, and the inner ring of the first end is tightly matched with the motor to realize sealing. There is the clearance between the outer wall of the axial middle part of first sealing washer and motor, fills bolster 20 between the two, avoids the motor during operation to rock too big. Illustratively, the buffer 20 is annular.

Optionally, the air intake cover 1 is circumferentially connected with the outer shell 22, and a third sealing element is arranged at a joint of the air intake cover 1 and the outer shell 22; a fourth seal is provided at the junction of the outer cartridge 32 and the outer housing 22. Through third sealing member sealing connection between air inlet cover 1 and the shell 22, through fourth sealing member sealing connection between air outlet cover 3 and the shell 22 to guarantee the leakproofness of casing subassembly, prevent that the fluid in the wind channel from leaking, avoid the chamber department negative pressure value undersize that absorbs water of absorbing water and taking off and can't effectively suck the solid-liquid waste on treating the clean face. Illustratively, the third seal comprises a third seal ring and the fourth seal comprises a fourth seal ring.

Optionally, the impeller is directly opposite to the air inlet 11 of the air inlet cover 1, and a fifth sealing member 30 is disposed between the impeller and the circumferential edge of the air inlet 11. Through setting up fifth sealing member 30, guarantee that the inboard fluid that gets into air inlet cover 1 can both flow through the impeller with higher speed, avoid the direct wind channel that gets into of fluid by the clearance of impeller and air inlet cover 1 for the velocity of flow of fluid is whole higher, avoids absorbing water and takes off the chamber department negative pressure value undersize that absorbs water. Illustratively, the fifth seal 30 includes a fifth seal ring.

The embodiment further provides a cleaning robot, which comprises the above fan module, and further comprises a water absorption rake and a sewage tank, wherein the air inlet 11 of the fan module is communicated with the water absorption cavity of the water absorption rake through the air inlet pipeline 5, and the air outlet 34 of the fan module is communicated with the sewage tank through the air outlet pipeline 6. The fan module enables the water suction cavity of the water suction rake to generate negative pressure so as to suck the sewage on the surface to be cleaned into the sewage tank through the water suction rake. The cleaning robot has the advantages of low working noise and good use experience of users.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. A fan module, comprising:

the air outlet channel is limited in the shell assembly, and the shell assembly comprises an air inlet cover (1), a volute (2) and an air outlet cover (3) which are sequentially arranged; an air inlet (11) communicated with the air channel is formed in the air inlet cover (1), and an air outlet (34) communicated with the air channel is formed in the air outlet cover (3); the volute (2) comprises an inner shell (21), an outer shell (22) and a plurality of air guide parts (23), the outer shell (22) is sleeved outside the inner shell (21) at intervals, a main air duct (24) is formed between the inner shell (21) and the outer shell (22), the air guide parts (23) are connected between the inner shell (21) and the outer shell (22) and located at an inlet of the main air duct (24), the plurality of air guide parts (23) are arranged at intervals along the circumferential direction of the volute (2), and each air guide part (23) inclines along the axial direction of the volute (2);

a motor disposed in the inner housing (21);

the impeller is arranged on the inner side of the air inlet cover (1) and is connected with an output shaft of the motor;

air duct baffle (4), set up in inner shell (21) with between shell (22), and be located the exit of main wind channel (24), air duct baffle (4) are regional including the air-out that sets up along circumference regional with non-air-out regional, the air-out is regional to be provided with exhaust vent (41).

2. The fan module according to claim 1, wherein the air outlet cover (3), the volute (2) and the air inlet cover (1) are arranged in sequence from top to bottom;

the fan module further includes:

the air inlet pipeline (5) is vertically arranged, a lower port of the air inlet pipeline (5) is communicated with an air inlet (11) in the air inlet cover (1), and an upper port of the air inlet pipeline (5) is communicated with a water suction cavity of the water suction rake through a first switching pipeline;

the air outlet cover comprises an air outlet cover (3), an air outlet pipeline (6), wherein the air outlet pipeline (6) is vertically arranged, an upper port of the air outlet pipeline (6) is communicated with an air outlet (34) in the air outlet cover (3), and a lower port of the air outlet pipeline (6) is communicated with a sewage tank through a second switching pipeline.

3. The fan module according to claim 1, wherein the air inlet (11) is tangential to an inner wall of the air inlet cover (1); the air outlet (34) is tangent to the inner wall of the air outlet cover (3).

4. The fan module of any of claims 1-3, further comprising:

the first silencing piece (7) is arranged between the inlet of the main air duct (24) and the air inlet cover (1) and sleeved outside the impeller;

and the second silencing piece (8) is arranged in the main air duct (24) and is positioned between the air guide part (23) and the air duct partition plate (4).

5. The fan module according to claim 4, further comprising a third silencer (9), wherein the third silencer (9) is disposed between the duct partition (4) and the outlet cover (3).

6. The fan module according to claim 5, wherein the inner casing (21) is provided with first heat dissipation holes (211), the outer casing (22) is correspondingly provided with second heat dissipation holes (221), and:

the two first stop plates (25) are axially arranged at two ends of the first heat dissipation hole (211) and the second heat dissipation hole (221) respectively;

the two second stop plates (26) are circumferentially arranged at two ends of the first heat dissipation hole (211) and the second heat dissipation hole (221) respectively; the two first stop plates (25) and the two second stop plates (26) are arranged in an enclosing manner to form a heat dissipation cavity (29) separated from the main air duct (24);

a fourth silencing piece (27) is arranged in the heat dissipation cavity (29), and a noise reduction cover plate (28) covering the second heat dissipation hole (221) is arranged on the outer side of the shell (22).

7. A fan module according to any of claims 1-3, wherein a first seal (10) is provided between the motor and the end of the inner housing (21) near the inlet of the main duct (24);

the air outlet cover (3) comprises an inner cylinder (31), an outer cylinder (32) and a connecting part (33), one end of the inner cylinder (31) is circumferentially connected with the inner shell (21), one end of the outer cylinder (32) is circumferentially connected with the outer shell (22), and the connecting part (33) is connected with the other ends of the inner cylinder (31) and the outer cylinder (32);

and a second sealing element is arranged at the joint of the inner cylinder (31) and the inner shell (21).

8. The fan module according to claim 7, wherein the air inlet cover (1) is circumferentially connected with the outer shell (22), and a third sealing member is arranged at the connection position of the air inlet cover (1) and the outer shell (22);

and a fourth sealing element is arranged at the joint of the outer cylinder (32) and the shell (22).

9. The fan module according to any of claims 1-3, wherein the impeller is directly opposite the inlet opening (11), and a fifth seal (30) is arranged between the impeller and the circumferential edge of the inlet opening (11).

10. A cleaning robot, characterized in that it comprises a fan module according to any of claims 1-9, and further comprises a suction rake and a waste tank, wherein the air inlet (11) is communicated with the interior of the waste tank, and sewage in the suction rake is sucked into the waste tank by negative pressure.

Images