CN215584051U - Cleaning device - Google Patents

Abstract

The utility model discloses a cleaning device, comprising: the fan assembly is provided with an air outlet; amortization piece, amortization piece are equipped with the open end of butt joint air outlet and by the cushion chamber of open end extension, and the chamber wall of cushion chamber still runs through and is provided with a plurality of bloops. According to the technical scheme, the air exhausted by the fan is scattered and decelerated through the plurality of silencing holes in the silencing piece, so that the interaction between the air and each part in the cleaning base station in the exhaust process is reduced, and the noise generated by the fan is reduced.

Description

Cleaning device

Technical Field

The utility model relates to the technical field of noise reduction of cleaning devices, in particular to cleaning equipment.

Background

Existing cleaning devices such as cleaning robots, cleaning base stations matched with the cleaning robots, or handheld cleaners generally have fan assemblies, and such cleaning devices suck external dust, dirt, hair, sewage, and other dirt through suction force generated by the fans to achieve a cleaning function.

In order to ensure sufficient suction, the fans of the existing cleaning devices are usually provided with higher power, and therefore, the related noise problem is derived, so that the cleaning devices bring extremely bad experience to users when operating, and therefore, the improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide cleaning equipment and aims to solve the problem of overlarge noise generated by a fan.

To achieve the above object, the present invention provides a cleaning device comprising:

the fan assembly is provided with an air outlet;

the silencing piece is provided with an opening end which is in butt joint with the air outlet and a buffer cavity extending from the opening end, and a plurality of silencing holes are formed in the wall of the buffer cavity in a penetrating mode.

In an embodiment of the present invention, the fan assembly includes a housing structure and a fan, the housing structure encloses to form an installation cavity, the housing structure is provided with an air inlet and an air outlet, the air inlet and the air outlet are both communicated with the installation cavity, the fan is accommodated in the installation cavity, an air suction inlet of the fan is communicated with the air inlet, and an air exhaust outlet of the fan is communicated with the air outlet.

In an embodiment of the present invention, an annular space is formed between the fan and a cavity wall on the peripheral side of the installation cavity, the fan assembly further includes a porous speed reducing medium, the porous speed reducing medium is filled in the annular space, and the porous speed reducing medium is used for reducing the flow velocity of the airflow.

In an embodiment of the present invention, the fan is provided with a plurality of exhaust ports arranged along the peripheral side, and the exhaust ports are communicated with the annular space.

In an embodiment of the present invention, the housing structure further encloses to form an exhaust passage, the air outlet is communicated between the exhaust passage and the mounting cavity, and the silencing element is accommodated in the exhaust passage.

In an embodiment of the present invention, the housing structure includes a first sub-housing and a second sub-housing, which are covered with each other, and the first sub-housing and the second sub-housing enclose the installation cavity, the air outlet, and the air exhaust channel.

In an embodiment of the present invention, a first clamping portion is convexly disposed on a side of the first sub-shell close to the second sub-shell, a second clamping portion is convexly disposed on a side of the second sub-shell close to the first sub-shell, and the first clamping portion and the second clamping portion clamp an opening end of the silencer.

In an embodiment of the present invention, the air outlet is formed by splicing the first clamping portion and the second clamping portion.

In an embodiment of the utility model, the fan assembly further includes an air duct, one end of the air duct is fixedly connected to the housing structure, the other end of the air duct is far away from the air outlet, the air outlet penetrates through an outer wall of the housing structure corresponding to the air duct, and the noise reduction piece is accommodated in the air duct.

In an embodiment of the present invention, a first buffer member and a second buffer member opposite to the first buffer member are disposed in the mounting cavity, and the first buffer member and the second buffer member respectively abut against corresponding sides of the fan, so as to fix the fan in the mounting cavity.

In an embodiment of the present invention, the opening end is a soft glue, and the opening end is in sealing fit with the periphery of the air outlet.

In an embodiment of the present invention, the cleaning device further includes a porous decelerating structure, the porous decelerating structure covers the sound attenuating element to cover the plurality of sound attenuating holes on the sound attenuating element, and the porous decelerating structure is configured to slow down a flow velocity of the airflow.

In an embodiment of the utility model, the silencing hole is conical, the small end of the silencing hole penetrates through the wall of the buffer cavity, and the large end of the silencing hole penetrates through the outer wall of the silencing piece.

According to the technical scheme, the silencing piece with the opening end and the buffer cavity is arranged, the opening end is arranged to be in butt joint with the air outlet of the fan assembly, so that air flow discharged from the air outlet of the fan assembly enters the buffer cavity from the opening end, the plurality of silencing holes penetrate through the wall of the buffer cavity, the air flowing into the buffer cavity is discharged in a dispersed mode through the plurality of silencing holes, the flow speed of the air flow is reduced, interaction between the air flow with the reduced flow speed and all parts in the cleaning equipment is reduced in the discharging process, and vibration and noise are reduced.

Drawings

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

FIG. 1 is an exploded view of one embodiment of a cleaning apparatus of the present invention;

FIG. 2 is a schematic view of the connection of the silencer, the porous decelerating medium and the fan in FIG. 1;

FIG. 3 is a schematic cross-sectional view of an embodiment of the cleaning apparatus of the present invention;

FIG. 4 is an exploded view of another embodiment of the cleaning apparatus of the present invention;

FIG. 5 is a schematic cross-sectional view of another embodiment of the cleaning apparatus of the present invention;

FIG. 6 is a top view of an embodiment of the cleaning apparatus of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Cleaning device	20	Silencing piece
10	Fan assembly	21	Open end
				11	Shell structure	22	Buffer cavity
11a	First sub-shell	23	Free end
				110a	A first clamping part	24	Silencing hole
11b	Second sub-shell	30	Porous speed reducing structure
				110b	Second clamping part	40	First buffer part
111	Mounting cavity	41	The first part
				112	Air inlet	42	The second part
113	Exhaust passage	50	Second buffer
				12	Fan blower	51	Flexible projection
121	Air suction inlet	511	Connecting part
				122	Exhaust port	512	Limiting part
13	Porous deceleration media

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 3, a cleaning apparatus 100 includes a fan assembly 10 and a noise reduction member 20.

The cleaning apparatus 100 is of various types, for example, the cleaning apparatus 100 may be an apparatus for cleaning environmental contaminants, such as a self-moving cleaning robot, a hand-push type cleaning robot, a grip type cleaner, a grip type floor-mopping machine, etc.; for another example, the cleaning apparatus 100 may also be a device cooperating with a cleaning robot or other apparatus for cleaning environmental contaminants, and may specifically be a base station device such as a washing station, an emptying station, or a maintenance station.

The cleaning device 100 generally has a housing portion for loading components, and the housing portion may be made of hard metal or plastic, or may be made of flexible plastic, and is not limited in this respect.

The cleaning device 100 also has a suction portion that is capable of suctioning off dirt from the surrounding environment, or of suctioning off dirt from a dirt collection bin in other cleaning devices 100. The suction portion is generally provided with a power member for providing a negative pressure for sucking the contaminants, and is further provided with a pipe pneumatically communicated with the power member, a suction opening communicated with the pipe, an exhaust opening 122, and the like, to perform a suction function.

The cleaning device 100 for cleaning the surrounding environment is further provided with a cleaning portion for cleaning, the cleaning portion may be a cleaning brush, a cleaning cloth, a cleaning wire, or the like, and the cleaning member may be driven by a driving portion mounted on the housing portion to perform a cleaning motion, so as to sweep and collect the dirt in the surrounding environment to a dirt suction port formed on the cleaning device 100.

Of course, this cleaning device 100 can also have the driving part that walking wheel, walking track etc. can realize the self-moving, and this cleaning device 100 can also have the detection part that is used for detecting the surrounding environment and the control part of being connected with the detection part electricity to make the cleaning device that can remove can realize automatic obstacle avoidance, this cleaning device can also be provided with other structures, has just not repeated here one by one.

The fan assembly 10 may refer to only a device capable of driving airflow to flow, or to a device and its associated apparatus for driving airflow to flow, and is not limited herein. This fan subassembly 10 is equipped with inlet scoop 121, and inside fan subassembly 10 can produce suction in order to absorb the air and get into from inlet scoop 121, this fan subassembly 10 was equipped with the air outlet (not sign), and fan subassembly 10 can drive inspiratory air and discharge from the air outlet.

The noise reduction member 20 may be a flexible structure without a specific shape, such as a cloth filter bag, a fiber filter screen, etc.; the sound-absorbing member 20 may also be a rigid structure with a specific shape, such as a rectangular box-shaped structure made of plastic, metal, etc., or a cylindrical tubular structure, or a structure with other shapes, which are regular and irregular, and is not limited herein.

The sound attenuating member 20 is provided with an open end 21 abutting against the air outlet and a buffer chamber 22 extending from the open end 21. The open end 21 may be directly abutted to the periphery of the air outlet to be pneumatically communicated with the air outlet, the open end 21 may also be pneumatically communicated with the air outlet through other pipe members, and other buffer media may be disposed between the open end 21 and the air outlet, which is not specifically limited herein.

It can be understood that the air outlet of the fan assembly 10 will enter the buffer cavity 22 of the noise reduction component 20 from the opening end 21 after exhausting the air flow, and the inside of the buffer cavity 22 may be provided with a noise reduction component to act on the air flow entering the buffer cavity 22, so as to achieve the purpose of reducing noise. The silencing component may be a wind guide plate, a filter screen, or other structures, and is preferably configured as a plurality of silencing holes 24 penetrating through a cavity wall of the buffer cavity 22, where a plurality of the silencing holes refer to two or more, and the airflow entering the buffer cavity 22 is finally dispersed and discharged from a plurality of air outlets of the buffer cavity 22, so that the wind speed is reduced, and partial energy is also lost when the sound waves exit through the plurality of silencing holes 24, so that the noise is finally reduced.

This bloop 24 can set up to the poroid structure of shapes such as triangle-shaped hole, square hole, hexagonal hole or round hole, and this bloop 24 is set up to the round hole usually, and the round hole is processed easily, and is the highest with the contact rate of air current, is favorable to reducing the wind speed, the noise abatement.

According to the technical scheme, the silencer 20 with the opening end 21 and the buffer cavity 22 is arranged, the opening end 21 is arranged to be in butt joint with the air outlet of the fan assembly 10, air flow exhausted from the air outlet of the fan assembly 10 enters the buffer cavity 22 from the opening end 21, the plurality of silencing holes 24 are formed in the cavity wall of the buffer cavity 22 in a penetrating mode, air flowing into the buffer cavity 22 is discharged in a dispersing mode through the plurality of silencing holes 24, partial energy of sound waves is consumed, meanwhile, the flow speed of the air flow is reduced, interaction between the air flow with the reduced flow speed and all parts in the cleaning equipment 100 in the discharging process is reduced, and accordingly vibration and noise generated by the fan assembly 10 are reduced.

In some embodiments of the present invention, referring to fig. 1 to fig. 3, the fan assembly 10 includes a housing structure 11 and a fan 12, the housing structure 11 encloses to form a mounting cavity 111, the housing structure 11 is provided with an air inlet 112 and an air outlet (not identified), the air inlet 112 and the air outlet are both communicated with the mounting cavity 111, the fan 12 is accommodated in the mounting cavity 111, an air inlet 121 of the fan 12 is communicated with the air inlet 112, and an air outlet 122 of the fan 12 is communicated with the air outlet. The setting of shell can play the effect of protection fan 12, can install fan 12 or demolish fan 12 in the lump when installing the shell or demolising the shell simultaneously, has so just so made things convenient for fan 12's installation and dismantlement.

It should be noted that the housing structure 11 is mounted on the housing portion of the cleaning device 100, and the mounting manner of the housing structure 11 is many, for example, a mounting seat is protruded on the housing structure 11, and the mounting seat and the housing portion of the cleaning device 100 can be connected by bolts; for another example, the outer portion of the housing structure 11 is cylindrical, the side surface of the cylinder is provided with external threads, the housing portion of the cleaning device 100 is correspondingly provided with internal threads, and the housing structure 11 is fixed to the housing portion of the cleaning device 100 by the matching of the external threads and the internal threads; for another example, a mounting bar protrudes from the housing structure 11, a mounting groove adapted to the mounting bar is correspondingly disposed on the housing portion of the cleaning device 100, and the housing structure 11 is fixed to the housing portion of the cleaning device 100 by the mounting bar and the mounting groove.

It should be noted that the fan 12 may be not connected to the wall of the installation cavity 111, and the fan 12 may also be directly or indirectly connected to the wall of the installation cavity 111. When the fan 12 is directly connected to the wall of the mounting cavity 111, the fan 12 may be abutted to the wall of the multi-side cavity of the mounting cavity 111 and clamped in the mounting cavity 111, and the fan 12 may also be connected to the wall of the mounting cavity 111 by bonding or bolts. When the fan 12 is indirectly connected with the cavity wall of the installation cavity 111, an installation plate connected with the fan 12 through a bolt can be arranged on the cavity wall of the installation cavity 111, a limiting plate clamped with the fan 12 can also be arranged, and a positioning column matched with the fan 12 in a splicing mode can also be arranged.

It should be noted that the number of the exhaust ports 122 of the fan 12 may be one or multiple, where multiple means two or more, and when multiple exhaust ports 122 are provided, the multiple exhaust ports 122 may be arranged along the circumferential side of the fan 12, or may be arranged along the axial direction of the fan 12, and are not limited specifically herein.

In addition, the shape of the mounting cavity 111 may be a circular cavity, a square cavity, or other regular and irregular cavities, which are not limited herein.

In some embodiments of the present invention, referring to fig. 1 and fig. 3, the fan assembly 10 includes a porous decelerating medium 13, the porous decelerating medium 13 may be a component with a honeycomb structure, such as a rigid honeycomb plate, a flexible honeycomb member, and the like, the porous decelerating medium 13 may also be noise reduction cotton with a multi-fiber structure, and the porous decelerating medium 13 may also be other components that can be used to decelerate the flow velocity of the airflow, which is not listed here. The sound-absorbing cotton can be common cotton, common sponge, sound-absorbing cotton and the like, which are not listed here.

On one hand, after sound waves are reflected, overlapped and collided by a honeycomb structure or innumerable fibers of sound attenuation cotton, sound wave energy is converted and absorbed, and the intensity of the sound waves is weakened; on the other hand, the kinetic energy of the airflow passing through the porous deceleration medium 13 is reduced after the airflow contacts with the countless fibers, the flow speed is slowed down, the interaction between the airflow with the reduced speed and other parts is reduced, and the noise is further reduced.

Preferably, the porous speed reducing medium 13 is made of sound absorbing cotton, and the sound absorbing cotton has the advantages of being good in sound absorbing effect, waterproof, dampproof, good in air permeability, easy to process and the like. Inhale the sound cotton specifically can adopt glass fiber to inhale the sound cotton, also can adopt polyester fiber to inhale the sound cotton, two kinds of sound cotton of inhaling sound effect approximately equal, polyester fiber inhales the cotton environment-friendly of sound better, and the cost is lower, and glass fiber inhales the sound cotton then the fire resistance better, and is more incombustible, and what kind of material specifically adopted inhales the sound cotton and can confirm according to actual need, does not do specific injecing here.

The porous decelerating medium 13 may be connected to the fan 12 and cover the exhaust port 122 of the fan 12, and the porous decelerating medium 13 may also be connected to other components on the cleaning base station and cover the exhaust port 122 of the fan 12, which is not specifically limited herein, and only needs to ensure that the air exhausted from the exhaust port 122 of the fan 12 can firstly enter the porous decelerating medium 13 and then be exhausted from the porous decelerating medium 13. The number of the porous deceleration media 13 may be one, or two or more, and the two or more porous deceleration media 13 may be stacked, or may be spliced, which is not specifically limited herein.

Further, the porous decelerating medium 13 is annularly arranged, the porous decelerating medium 13 annularly arranged may be directly sleeved outside the fan 12, or an annular space may be formed between the fan 12 and the wall of the circumferential side of the installation cavity 111, and the porous decelerating medium 13 is filled in the annular space. In this arrangement, the airflow discharged from the exhaust port 122 provided on the circumferential side of the fan 12 flows out through the porous deceleration medium 13, and the airflow passing through the porous deceleration medium 13 is affected by the porous deceleration medium 13 to reduce the flow velocity.

It is understood that, on the one hand, the porous deceleration medium 13 arranged in a ring shape can act on the airflow discharged from all the exhaust ports 122 on the circumferential side of the fan 12; on the other hand, the porous deceleration medium 13 arranged in the ring shape is convenient to install, and the need of arranging redundant connecting pieces to fix the porous deceleration medium 13 is avoided.

The porous decelerating medium 13 may be formed by entirely covering the circumferential side of the fan 12, or may be formed by covering only a portion provided with the exhaust port 122, and is not specifically limited herein, and the annular shape of the porous decelerating medium 13 may be a continuous closed-loop annular shape, or may be a notched annular shape or a semi-annular shape, and the like.

It is worth mentioning that the opening end 21 of the silencing piece 20 can be directly abutted against the porous speed reducing medium 13, the opening end 21 of the silencing piece 20 can be provided with an arc panel, and the arc panel is tightly attached to the annular porous speed reducing medium 13 so as to enable the airflow discharged by the fan 12 to smoothly enter the buffer cavity 22.

Considering that the wind exhausted by the fan 12 needs to be exhausted from the cleaning apparatus 100 in a certain direction, in order to prevent the air exhausted by the fan 12 from directly entering the interior of the cleaning apparatus 100 and causing an increase in air pressure inside the cleaning apparatus 100, the cleaning apparatus 100 and the internal components thereof are damaged. In some embodiments of the present invention, referring to fig. 1 and fig. 6, the housing structure 11 further encloses to form an exhaust channel 113, the air outlet is communicated between the exhaust channel 113 and the installation cavity 111, and the silencing element 20 is accommodated in the exhaust channel 113. Thus, the air discharged from the fan 12 enters the exhaust channel 113 through the air outlet, and is discharged out of the cleaning apparatus 100 by the guiding action of the exhaust channel 113.

It can be said that the exhaust channel 113 may be arranged in a straight pipe or a curved pipe, and preferably, the exhaust channel 113 is arranged in a "Z" shape, and the inner wall surface of the turning part of the exhaust channel 113 is arranged in an arc surface. The exhaust duct 113, which is arranged in a zigzag shape, allows the wind to flow out along a longer path, and allows the airflow to lose more kinetic energy when being discharged from the cleaning apparatus 100, thereby reducing noise. The smooth inner wall that is the cambered surface setting is favorable to the wind-guiding, avoids the air current directly to take place violent collision with the inner wall and causes great vibrations and noise.

It is worth mentioning that the air outlet end of the exhaust passage 113 can be further provided with an air outlet grille to prevent external dust from entering the exhaust passage 113 or the mounting cavity 111, and the air outlet grille can further scatter the exhausted air to reduce noise.

In view of the small space of the exhaust passage 113, to facilitate the installation and removal of the muffler 20, further, the housing structure 11 includes a first sub-housing 11a and a second sub-housing 11b, which are covered with each other, and the first sub-housing 11a and the second sub-housing 11b enclose to form the installation cavity 111, the air outlet and the exhaust passage 113. The arrangement is convenient for installing the silencing piece 20 at the corresponding position before the first split shell 11a and the second split shell 11b are closed, and fixing the silencing piece 20 after the first split shell 11a and the second split shell 11b are closed.

Specifically, a first clamping portion 110a is convexly disposed on a side of the first sub-shell 11a close to the second sub-shell 11b, a second clamping portion 110b is convexly disposed on a side of the second sub-shell 11b close to the first sub-shell 11a, and the first clamping portion 110a and the second clamping portion 110b jointly clamp the open end 21 of the sound attenuating element 20.

It should be noted that the first clamping portion 110a and the second clamping portion 110b may be configured as clamping plates, and the silencing piece 20 may be provided with clamping grooves corresponding to the clamping plates, and the clamping grooves are matched with the clamping plates, so that the silencing piece 20 is fixed in the exhaust channel 113. The clamping plate can be a square clamping plate, an arc clamping plate or clamping plates with other regular and irregular shapes.

The first clamping portion 110a and the second clamping portion 110b may be both made of rubber or silica gel, the noise damping member 20 is elastically abutted to the elastic pad corresponding to the first clamping portion 110a and the elastic pad corresponding to the second clamping portion 110b to be fixed, the noise damping member 20 may also be provided with a limiting groove, and at least a portion of the first clamping portion 110a and the second clamping portion 110b is located in the limiting groove to prevent the noise damping member 20 from shifting. The first clamping portion 110a and the second clamping portion 110b can be spliced to form an air outlet, so that the open end 21 of the noise reduction part 20 is butted with the air outlet.

Similarly, the circumferential side of the noise suppressor 20 may also be provided with a soft glue (not labeled), the soft glue is in sealing fit with the air outlet formed by splicing the first clamping portion 110a and the second clamping portion 110b, and the portion provided with the soft glue may be the opening end 21 of the noise suppressor 20. It can be understood that the first clamping portion 110a and the second clamping portion 110b are set as elastic pads or the opening end 21 of the silencer 20 is set as soft glue, so that the silencer 20 and the exhaust passage 113 can be hermetically matched, and the air flow discharged by the fan 12 can be filtered and denoised by the silencer 20 before entering the exhaust passage 113.

Of course, the exhaust passage 113 may also be replaced by an air duct, and specifically, the fan assembly 10 further includes an air duct, one end of the air duct is fixedly connected to the housing structure 11, the other end of the air duct is disposed away from the air outlet, the air outlet penetrates through an outer wall of the housing structure 11 corresponding to the air duct, and the sound deadening piece 20 is accommodated in the air duct. The above description of the exhaust passage 113 and the embodiments related to the exhaust passage 113 can be applied to the air duct, and are not repeated herein.

In some embodiments of the present invention, the sound attenuating element 20 is further provided with a free end 23 disposed opposite the open end 21, the buffer chamber 22 extends from the open end 21 toward the free end 23, and the free end 23 is disposed in an overhang. The free end 23 arranged in a suspended manner can be provided with a plurality of silencing holes 24 along the circumferential direction, so that the air flow can be discharged along the circumferential direction of the free end 23, and the exhaust flow of the silencing piece 20 is increased.

In some embodiments of the present invention, referring to fig. 4 and fig. 5, a first buffer member 40 and a second buffer member 50 opposite to the first buffer member 40 are disposed in the mounting cavity 111, and the first buffer member 40 and the second buffer member 50 are respectively abutted against corresponding sides of the fan 12 to fix the fan 12 in the mounting cavity 111. The mounting cavity 111 can limit the fan 12, the first buffer member 40 and the second buffer member 50 further absorb the vibration generated by the fan 12 during the working process, and the reduction of the vibration of the fan 12 means the reduction of the noise.

It should be noted that the first buffer member 40 may be made of various materials and structures, for example, the first buffer member 40 may be a cushion made of rubber, silica gel, or cotton; as another example, the first buffer 40 may be a spring, an elastic sheet, a torsion spring, or the like, which is made of metal. Of course, the material and the structure of the second buffering member 50 may also adopt the above-mentioned embodiments, and the first buffering member 40 and the second buffering member 50 may adopt the same material and structure, or may adopt different materials and/or different structures, which is not limited herein.

Further, referring to fig. 4 and 5, the first buffer 40 includes a first portion 41 and a second portion 42 that are annularly disposed, an inner diameter of the first portion 41 is larger than an inner diameter of the second portion 42, an inner side of the first portion 41 is sleeved with the fan 12, an outer side of the first portion 41 is sleeved with a cavity wall of the mounting cavity 111, the second portion 42 is connected with one end of the first portion 41, a surface of the second portion 42 adjacent to the first portion 41 is abutted with the fan 12, and a surface of the second portion 42 away from the first portion 41 is abutted with the cavity wall of the mounting cavity 111. It is understood that the circumferential side and the end face of one end of the fan 12 are in contact with the first cushion member 40, and therefore the cushion member configured as described above can cushion the fan 12 in both the axial direction and the radial direction.

It should be noted that the first portion 41 may be a portion wrapping the circumferential side of the fan 12, and the first portion 41 may also wrap the circumferential side of the fan 12, and provide an avoiding hole at a corresponding position where the circumferential side of the fan 12 is provided with the air outlet, so as to expose the air outlet of the fan 12. The inner annulus of the second portion 42 is typically configured to be positioned away from the air inlet of the fan 12.

Further, referring to fig. 4 and 5, one end of the second buffer 50 abuts against the inner wall of the mounting cavity 111, and the other end of the second buffer 50 abuts against the fan 12; the surface of the second buffer 50 facing the fan 12 is further provided with a flexible protrusion 51, the flexible protrusion 51 comprises a connecting portion 511 and a limiting portion 512 protruding out of the connecting portion 511 in the lateral direction, one end of the connecting portion 511, which is far away from the second buffer 50, penetrates through a through hole in the casing of the fan 12, and the limiting portion 512 penetrates through the through hole in the casing of the fan 12 and abuts against the inner wall surface of the casing of the fan 12.

Obviously, the limiting portion 512 may also be configured to have an outer diameter larger than that of the connecting portion 511, one end of the connecting portion 511 is connected to the second buffering member 50, one end of the connecting portion 511 away from the second buffering member 50 extends into the inside of the fan 12 and is connected to the limiting portion 512, and the outer diameter of the limiting portion 512 is gradually reduced from one end close to the connecting portion 511 to one end away from the connecting portion 511.

It can be understood that, the second buffer member 50 can be connected with the fan 12 in a clamping manner due to the arrangement of the flexible protrusions 51, the flexible protrusions 51 are made of materials which are stressed and are easy to deform, and the fan 12 is provided with mounting holes corresponding to the flexible protrusions 51 corresponding to the housing of the second buffer member 50. When the fan is installed, the limiting part 512 of the flexible protrusion 51 is aligned to the installation hole and the limiting part 512 penetrates through the installation hole in an extruding mode, so that the limiting part 512 enters the inside of the fan 12, the connecting part 511 is in clearance fit or sleeved fit with the installation hole, and the limiting part 512 protrudes out of the connecting part 511 in a lateral direction or the outer diameter of the limiting part is larger than that of the connecting part 511, so that the second buffer piece 50 is connected with the fan 12 in a clamping mode through the flexible protrusion 51.

In addition, when the outer diameter of the limiting portion 512 is larger than the outer diameter of the connecting portion 511, the outer diameter of the limiting portion 512 is gradually reduced from the end close to the connecting portion 511 to the end far from the connecting portion 511, so that the limiting portion 512 can be more conveniently pushed into the fan 12.

It should be noted that the flexible protrusion 51 may be made of rubber or silicone. The connection portion 511 and the second cushion 50 may be connected by a bolt connection, an adhesive connection, a sewing connection, or the like, and the connection portion 511 and the second cushion 50 may be connected by integrally molding the connection portion 511 and the second cushion 50. Similarly, the connection between the stopper portion 512 and the connection portion 511 may be realized by connecting the stopper portion 512 and the connection portion 511 by a bolt connection, an adhesive connection, a sewing connection, or the like, and the connection between the stopper portion 512 and the connection portion 511 may be realized by integrally forming the stopper portion 512 and the connection portion 511.

In an embodiment of the utility model, referring to fig. 1 and fig. 3, the cleaning apparatus 100 further includes a porous decelerating structure 30, the porous decelerating structure 30 is disposed to cover the sound attenuating holes 24 on the sound attenuating element 20, and the porous decelerating structure 30 is used to slow down the flow velocity of the air flow.

It should be noted that the types and structures of the components that can be used in the porous deceleration structure 30 can be referred to the porous deceleration medium 13, and are not described herein again. The member used in the porous deceleration structure 30 may be the same as the member used in the porous deceleration medium 13, or the member used in the porous deceleration structure 30 may be different from the member used in the porous deceleration medium 13, and is not particularly limited herein.

The number of the porous deceleration structures 30 may be one, two or more, and two or more porous deceleration structures 30 may be stacked or spliced, which is not specifically limited herein. The porous deceleration structure 30 may be provided in a ring shape, a sheet shape, a bag shape, or the like, which is not listed here.

Preferably, with continued reference to fig. 1 and 3, the porous decelerating structure 30 is configured to be a cylinder with one end open, and the porous decelerating structure 30 is sleeved on the sound attenuating element 20. This arrangement can avoid the need for additional connecting members to fix the porous deceleration structure 30, thereby facilitating the installation of the porous deceleration structure 30, and the porous deceleration structure 30 configured as a cylindrical shape can also cover all the muffling holes 24 of the muffling member 20.

It should be noted that the outer structure of the porous decelerating structure 30 may be a square cylinder, a cylindrical cylinder, or other regular or irregular cylinder, and is not limited in this regard. The shape of the internal structure of the porous decelerating structure 30 for covering the muffling holes 24 may be the same as or different from the external structure thereof, and preferably, the internal structure of the porous decelerating structure 30 is configured to be matched with the external structure of the muffling member 20 so as to be closely attached to the muffling holes 24 of the muffling member 20.

Obviously, other components for reducing noise may be further added in the present invention, for example, an air guide channel may be further disposed in the exhaust channel 113, so that the present invention has more levels of noise reduction functions, and the specific installation manner is not described herein.

In an embodiment of the present invention, referring to fig. 3, the muffling hole 24 is conical, the small end of the muffling hole 24 is disposed through the wall of the buffer chamber 22, and the large end of the muffling hole 24 is disposed through the outer wall of the muffling element 20.

It will be appreciated that the inner diameter of the muffling hole 24 gradually increases from the end of the muffling hole 24 adjacent the cushion chamber 22 to the end of the muffling hole 24 remote from the cushion chamber 22. The arrangement is that the inner diameter of the channel is increased gradually in the flowing direction of the air flow, and based on the flowing characteristic of the air, the flow speed of the air flow is reduced when the air flow flows from a position with small space to a position with large space, so that the flow speed of the discharged air is further reduced, and the noise can be further reduced.

In an embodiment of the present invention, referring to fig. 1 to 3, the silencing part 20 includes a plurality of silencing side plates (not labeled), the plurality of silencing side plates are surrounded to form a buffer cavity 22, the plurality of side plates face different directions, each silencing side plate is provided with at least one silencing hole 24, such arrangement enables each side of the silencing part to exhaust an air flow, and the exhaust of the air flow from multiple directions is also beneficial to dispersing the air flow, so that the speed of the air flow is further slowed down, thereby being beneficial to reducing noise.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (13)

1. A cleaning device, characterized in that the cleaning device comprises:

the fan assembly is provided with an air outlet;

the silencing piece is provided with an opening end which is in butt joint with the air outlet and a buffer cavity extending from the opening end, and a plurality of silencing holes are formed in the wall of the buffer cavity in a penetrating mode.

2. The cleaning apparatus as claimed in claim 1, wherein the fan assembly includes a housing structure and a fan, the housing structure encloses a mounting cavity, the housing structure has an air inlet and an air outlet, the air inlet and the air outlet are both connected to the mounting cavity, the fan is accommodated in the mounting cavity, the air inlet of the fan is connected to the air inlet, and the air outlet of the fan is connected to the air outlet.

3. The cleaning apparatus as claimed in claim 2, wherein an annular space is formed between the fan and a wall of the chamber around the mounting chamber, the fan assembly further comprising a porous decelerating medium filled in the annular space, the porous decelerating medium being configured to slow down the flow rate of the air flow.

4. The cleaning apparatus defined in claim 3, wherein the fan is provided with a plurality of circumferentially arranged exhaust openings communicating with the annular space.

5. The cleaning apparatus as claimed in claim 2, wherein said housing structure further encloses an exhaust passage, said air outlet opening is connected between said exhaust passage and said mounting chamber, and said noise dampening member is received in said exhaust passage.

6. The cleaning apparatus defined in claim 5, wherein the housing structure comprises first and second mating sub-housings that enclose the mounting cavity, the outlet vent, and the exhaust passage.

7. The cleaning apparatus as claimed in claim 6, wherein the first sub-housing is provided with a first clamping portion protruding from a side thereof close to the second sub-housing, the second sub-housing is provided with a second clamping portion protruding from a side thereof close to the first sub-housing, and the first clamping portion and the second clamping portion clamp the open end of the noise reduction member together.

8. The cleaning apparatus defined in claim 7, wherein the air outlet is formed by a splice between the first and second clamping portions.

9. The cleaning apparatus as claimed in claim 2, wherein the fan assembly further includes an air duct, one end of the air duct is fixedly connected to the housing structure, the other end of the air duct is disposed away from the air outlet, the air outlet penetrates through the outer wall of the housing structure corresponding to the air duct, and the noise reduction member is accommodated in the air duct.

10. The cleaning apparatus of claim 2, wherein a first bumper member and a second bumper member are disposed within the mounting cavity opposite the first bumper member, the first bumper member and the second bumper member abutting respective sides of the fan to secure the fan within the mounting cavity.

11. The cleaning apparatus as claimed in claim 1, wherein the open end is a soft glue, and the open end is in sealing fit with the peripheral side of the air outlet.

12. The cleaning apparatus as claimed in claim 1, further comprising a porous decelerating structure surrounding the silencer element to cover the plurality of silencing holes of the silencer element, the porous decelerating structure being configured to slow down the flow rate of the air flow.

13. The cleaning apparatus as recited in claim 1, wherein said muffling aperture is tapered, a small end of said muffling aperture is disposed through a wall of said buffer chamber, and a large end of said muffling aperture is disposed through an outer wall of said muffling member.

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