CN220378549U - Fan assembly for cleaning equipment and cleaning equipment - Google Patents

Abstract

The utility model discloses a fan assembly for cleaning equipment and the cleaning equipment. The fan assembly comprises a shell, a fan, a rear cover and an air guide piece, wherein a containing cavity which is open towards one side is formed in the shell; the fan is accommodated in the accommodating cavity; the rear cover is connected with the shell, and an air outlet communicated with the accommodating cavity is formed in the rear cover; the air guide piece is arranged between the rear cover and the shell, an air guide hole communicated with the accommodating cavity is formed in the air guide piece, and a first air channel communicated with the accommodating cavity and the air outlet is formed between the rear cover and the air guide piece; wherein, be formed with the wind-break portion that towards the inside outstanding of first wind channel on at least one of wind-guiding piece and back lid. According to the fan assembly, the air guide hole is formed in the air guide piece to enable the accommodating cavity in the shell to be communicated with the air outlet in the rear cover, the air guide piece and the wind shielding part formed on the rear cover can change the shape of the first air channel defined by the air guide piece and the rear cover, the flow speed of air flow is reduced, noise at the air outlet is reduced, and user experience is improved.

Description

Fan assembly for cleaning equipment and cleaning equipment

Technical Field

The utility model relates to the field of household appliances, in particular to a fan assembly for cleaning equipment and the cleaning equipment.

Background

At present, a dust collection system in a sweeper is usually internal circulation, namely air flow generated by a fan is discharged from an air outlet of the fan and then is conveyed to an air inlet of the sweeper through a pipeline, sundries in the dust box of the sweeper can be stirred and blown to the air outlet of the sweeper after entering the dust box of the sweeper, at the moment, the sundries in the dust box of the sweeper can be collected only by assembling a dust bag at the air outlet of the sweeper, meanwhile, the air outlet of the sweeper can be connected with the air inlet of the fan, and when the fan works, the fan can suck the sundries at the air outlet of the sweeper on the premise of keeping the air flow provided for the air inlet of the sweeper to blow the sundries, so that the dust collection structure has good dust collection effect but relatively high overall cost, complex structure and relatively low cost performance. Therefore, in order to respond to market demands, it is necessary to develop an external circulation dust collection module, only a duct for sucking dust by a fan is reserved, and a duct for conveying air flow to an air inlet of the sweeper is removed. After the integration is changed from internal circulation to external circulation, the air outlet of the fan is in an open state, meanwhile, the air speed is high, the air noise of the air outlet is abnormally increased, and the experience is poor.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. To this end, it is an object of the present utility model to propose a blower assembly for a cleaning device. According to the fan assembly, the air guide piece is arranged between the shell and the rear cover, the air guide hole is formed in the air guide piece to enable the accommodating cavity in the shell to be communicated with the air outlet in the rear cover, and the air shielding part formed on the air guide piece and the rear cover can change the shape of the first air channel defined by the air guide piece and the rear cover and reduce the flow velocity of air flow, so that noise at the air outlet is reduced, and user experience is improved.

The utility model further provides cleaning equipment comprising the fan assembly.

The fan assembly comprises a shell, a fan, a rear cover and an air guide piece, wherein a containing cavity which is open towards one side is formed in the shell; the fan is accommodated in the accommodating cavity; the rear cover is connected with the shell, and an air outlet communicated with the accommodating cavity is formed in the rear cover; the air guide piece is arranged between the rear cover and the shell, an air guide hole communicated with the accommodating cavity is formed in the air guide piece, and a first air channel communicated with the accommodating cavity and the air outlet is formed between the rear cover and the air guide piece; and a wind shielding part protruding towards the interior of the first air duct is formed on at least one of the air guide piece and the rear cover.

According to the utility model, the fan assembly is provided with the shell and the rear cover, the accommodating cavity which is opened towards one side is formed in the shell, the accommodating cavity can be used for accommodating the fan, the rear cover is connected with the shell, the rear cover is provided with the air outlet for exhausting air, the air outlet is communicated with the accommodating cavity, and when the fan works, air flow generated by the fan can be exhausted through the air outlet. The air guide piece is further arranged between the rear cover and the shell, the shell is connected with the rear cover through the air guide piece, an air guide hole communicated with the accommodating cavity is formed in the air guide piece, and when the fan works, air flow generated by the fan can flow from the accommodating cavity to the air outlet through the air guide hole, so that the air flow in the fan assembly is discharged. Simultaneously, the wind guide piece and the rear cover can form a first air channel which is communicated with the wind guide hole and the air outlet when being assembled, and the air flow in the accommodating cavity can enter the first air channel after passing through the wind guide hole and flows to the air outlet along the extending direction of the first air channel.

In addition, when processing, can set up respectively towards the protruding wind-blocking part in the first wind channel on wind-guiding piece and the back lid, after the back lid that is provided with wind-blocking part and the wind-guiding piece that is provided with wind-blocking part mutually assemble, the extending direction of first wind channel can be influenced by wind-blocking part and change, specifically, wind-blocking part is protruding in towards first wind channel, lead to first wind channel and not extend in the fixed direction, but can take place to turn to and produce bending region in initial extending direction many times, the setting of wind-blocking part makes the air current that holds the intracavity exhaust can constantly take place to turn to when flowing in first wind channel, the speed that the air current flows can be reduced because of being blocked back of first wind channel inner wall when turning to, correspondingly, the wind speed of air outlet position also can be reduced, the noise that the slow wind speed produced can be less than the noise that the high-speed air current produced, consequently, wind-blocking part's structure can reduce the noise of fan subassembly air outlet, the experience when user's use is felt.

According to one embodiment of the utility model, the orthographic projection of the air outlet on the air guide piece is positioned at the center of the air guide piece, at least part of the periphery of the air guide piece is provided with an air guide hole which is penetrated in the axial direction, and the air guide hole is arranged at the periphery of the air outlet.

According to one embodiment of the utility model, a reinforcing plate extending in the radial direction is formed in the air guide hole.

According to an embodiment of the present utility model, the wind shielding part includes a first wind shielding part and a second wind shielding part, the first wind shielding part being provided at an outer circumference of the wind guiding hole and extending toward the rear cover; the second wind shielding part is arranged on the periphery of the air outlet and extends towards the air guide piece.

According to an embodiment of the utility model, the projection of the first wind shielding portion in the radial direction and the projection of the second wind shielding portion in the radial direction overlap at least partially.

According to one embodiment of the utility model, a first sound absorbing member is arranged on one side of the rear cover, which faces the air guide member, and the first sound absorbing member is sleeved on at least part of the periphery of the second wind shielding part.

According to one embodiment of the present utility model, the rear cover is formed with a plurality of first exhaust holes, and any one of the first exhaust holes is opposite to at least part of the first sound absorbing member.

According to one embodiment of the utility model, the shell comprises an outer shell and an inner shell, the accommodating cavity is formed in the inner shell, the fan is accommodated in the inner shell, a second air duct is formed between the inner shell and the outer shell, and the second air duct extends in the axial direction and is opposite to and communicated with the air guide hole.

According to one embodiment of the utility model, a second exhaust hole penetrating in the radial direction is formed on the inner shell, and the second exhaust hole is opposite to at least part of the second air duct and communicates the second air duct with the accommodating cavity.

According to one embodiment of the utility model, a second sound absorbing member is arranged in the second air duct, and the second sound absorbing member is arranged around at least part of the outer periphery of the inner casing.

According to one embodiment of the utility model, a first vibration damper is arranged between the inner shell and the fan, and at least part of the first vibration damper penetrates through the inner shell and is stopped against the air guide piece.

According to one embodiment of the utility model, the fan assembly further comprises a front cover, the front cover is arranged at one end, far away from the air guide piece, of the shell and is connected with the fan, a second vibration reduction piece is arranged between the front cover and the fan, and the second vibration reduction piece is opposite to the first vibration reduction piece in the axial direction.

According to one embodiment of the utility model, an extension part which surrounds the air outlet and extends in the axial direction is arranged on one side of the air outlet, which faces away from the air guide.

The cleaning device according to the utility model is briefly described below.

According to the cleaning device, the fan assembly is arranged in the embodiment, so that in the use process of the cleaning device, air flow generated by the operation of the fan assembly can flow in the first air duct defined by the air guide piece and the rear cover in a matched mode, the air flow speed is reduced under the action of the wind shielding part, noise generated by the air flow at the air outlet is reduced, and the experience of a user is improved.

In summary, according to the fan assembly disclosed by the utility model, the shell is configured in a mode that the inner shell and the outer shell are matched, the inner shell defines the accommodating cavity which is opened towards one side, the accommodating cavity can accommodate the fan, the front cover can be arranged on one side of the inner shell, which is opened, and the accommodating cavity can be closed to prevent the fan from falling off from the accommodating cavity after the front cover is connected with the shell. The open direction of shell and inner shell is opposite, can set gradually wind-guiding spare and hou gai at the open end of shell, and the wind-guiding spare is connected with the open end of shell promptly, and the back lid is connected with one side that the wind-guiding spare deviates from the shell, and the assembly of back lid and wind-guiding spare has sealed the open end of shell for formed the second wind channel that extends in the axial between inner shell and the shell, the air current that the fan produced can get into the second wind channel through the second exhaust hole on the inner shell and flow in the extending direction in the second wind channel. The air guide piece is provided with an air guide hole, the air guide hole is used for communicating the second air channel with the first air channel defined by the rear cover and the air guide piece, so that air flow in the second air channel can enter the first air channel through the air guide hole and finally is discharged out of the fan assembly through an air outlet communicated with the first air channel. Notably, can set up the portion of keeping out the wind in the first wind channel, the portion of keeping out the wind is including setting up in the wind-guiding hole and towards the first portion of keeping out the wind that the back lid extends and set up in the air outlet and towards the second portion of keeping out the wind that the wind-guiding piece extends, the first portion of keeping out the wind overlaps with the projection part of second portion on radial, the first wind channel shape has been changed in the setting of first portion of keeping out the wind and second portion of keeping out the wind, make first wind channel form the structure of maze-like, the air current that gets into in the first wind channel can take place the diversion many times by the lateral wall in wind channel and the barrier of keeping out the wind portion, the velocity of flow in first wind channel has been reduced, and then the noise that the air current produced because of the velocity of flow is too fast in air outlet department has been reduced. The fan assembly is further provided with a first sound absorbing piece and a second sound absorbing piece in one side, close to the rear cover, of the first air duct and in the second air duct respectively, and the first sound absorbing piece and the second sound absorbing piece can reduce noise generated in the fan assembly. The rear cover is also provided with a plurality of first exhaust holes which are opposite to at least part of the first sound absorbing parts respectively, and the first exhaust holes can split the air flow in the first air duct so as to further reduce the flow speed of the air flow. In addition, can set up first damping piece and second damping piece in the position of fan assembly in order to reduce the vibration that the fan work produced, improve the stability of fan subassembly.

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

Drawings

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

FIG. 1 is a cross-sectional view of a fan assembly according to one embodiment of the present utility model;

FIG. 2 is an exploded view of a blower assembly according to one embodiment of the utility model;

FIG. 3 is a block diagram of a fan assembly according to one embodiment of the present utility model;

FIG. 4 is a block diagram of a front cover according to one embodiment of the utility model;

FIG. 5 is an exploded view of a blower assembly according to one embodiment of the utility model;

FIG. 6 is an exploded view of a fan assembly in cross-section according to one embodiment of the present utility model.

Reference numerals:

a fan assembly 1;

a housing 11, an outer housing 111, an inner housing 112, a second exhaust hole 1121, and a receiving chamber 113;

a fan 12;

the rear cover 13, the air outlet 131, the second wind shielding portion 132, the first sound absorbing member 133, the first air discharge hole 134;

the air guide 14, the air guide hole 141, the reinforcing plate 1411, the first wind shielding portion 142;

a first air duct 151, a second air duct 152, a second sound absorbing member 153;

the first vibration damper 161, the second vibration damper 162, the front cover 17, the extension 18, and the air intake port 101.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

At present, a dust collection system in a sweeper is usually internal circulation, namely air flow generated by a fan is discharged from an air outlet of the fan and then is conveyed to an air inlet of the sweeper through a pipeline, sundries in the dust box of the sweeper can be stirred and blown to the air outlet of the sweeper after entering the dust box of the sweeper, at the moment, the sundries in the dust box of the sweeper can be collected only by assembling a dust bag at the air outlet of the sweeper, meanwhile, the air outlet of the sweeper can be connected with the air inlet of the fan, and when the fan works, the fan can suck the sundries at the air outlet of the sweeper on the premise of keeping the air flow provided for the air inlet of the sweeper to blow the sundries, so that the dust collection structure has good dust collection effect but relatively high overall cost, complex structure and relatively low cost performance. Therefore, in order to respond to market demands, it is necessary to develop an external circulation dust collection module, only a duct for sucking dust by a fan is reserved, and a duct for conveying air flow to an air inlet of the sweeper is removed. After the integration is changed from internal circulation to external circulation, the air outlet of the fan is in an open state, meanwhile, the air speed is high, the air noise of the air outlet is abnormally increased, and the experience is poor.

A fan assembly according to an embodiment of the present utility model is described below with reference to fig. 1-6.

The fan assembly 1 comprises a shell 11, a fan 12, a rear cover 13 and an air guide piece 14, wherein a containing cavity 113 which is open towards one side is formed in the shell 11; the fan 12 is accommodated in the accommodating cavity 113; the rear cover 13 is connected with the housing 11, and an air outlet 131 communicated with the accommodating cavity 113 is formed on the rear cover 13; the air guide member 14 is disposed between the rear cover 13 and the housing 11, an air guide hole 141 communicating with the accommodating cavity 113 is formed in the air guide member 14, and a first air duct 151 communicating the accommodating cavity 113 with the air outlet 131 is formed between the rear cover 13 and the air guide member 14; wherein, a wind shielding part protruding toward the inside of the first air duct 151 is formed on at least one of the wind guide 14 and the rear cover 13.

The fan assembly 1 according to the present utility model is provided with a housing 11 and a rear cover 13, wherein a receiving cavity 113 opened toward one side is formed inside the housing 11, the receiving cavity 113 can be used for receiving a fan 12, the rear cover 13 is connected with the housing 11, an air outlet 131 for exhausting air is provided on the rear cover 13, the air outlet communicates with the receiving cavity 113, and when the fan 12 is operated, air flow generated by the fan 12 can be exhausted through the air outlet 131. An air guide member 14 is further arranged between the rear cover 13 and the housing 11, the air guide member 14 connects the housing 11 and the rear cover 13, an air guide hole 141 communicated with the accommodating cavity 113 is formed in the air guide member 14, and when the fan 12 works, air flow generated by the fan 12 can flow from the accommodating cavity 113 to the air outlet 131 through the air guide hole 141, so that the air flow in the fan assembly 1 is discharged. Meanwhile, the air guide 14 and the rear cover 13 may form a first air duct 151 communicating the air guide hole 141 with the air outlet 131 when assembled, and the air flow in the accommodating chamber 113 may enter the first air duct 151 after passing through the air guide hole 141 and flow to the air outlet 131 along the extending direction of the first air duct 151.

In addition, during processing, the wind shielding parts protruding towards the inside of the first air duct 151 can be respectively arranged on the wind guiding part 14 and the rear cover 13, when the rear cover 13 provided with the wind shielding parts and the wind guiding part 14 provided with the wind shielding parts are mutually assembled, the extending direction of the first air duct 151 can be changed under the influence of the wind shielding parts, specifically, the wind shielding parts protrude towards the inside of the first air duct 151, so that the first air duct 151 does not extend in a fixed direction, but can turn for many times in the initial extending direction and generate bending areas, the arrangement of the wind shielding parts enables the airflow discharged from the accommodating cavity 113 to turn continuously when flowing in the first air duct 151, the flowing speed of the airflow can be reduced after being blocked by the inner wall of the first air duct 151 during turning, correspondingly, the wind speed of the position of the air outlet 131 can be reduced, and noise generated by slow wind speed can be smaller than noise generated by high-speed airflow.

According to an embodiment of the present utility model, the orthographic projection of the air outlet 131 on the air guiding member 14 is located at the center of the air guiding member 14, at least part of the outer periphery of the air guiding member 14 is formed with an air guiding hole 141 penetrating in the axial direction, and the air guiding hole 141 is disposed at the outer periphery of the air outlet 131. Since the air flow inside the fan assembly 1 enters the first air duct 151 after passing through the air guide hole 141 and is finally discharged through the air outlet 131, the positions of the air guide hole 141 and the air outlet 131 may affect the flow of the air flow. The rear cover 13 may set the air outlet 131 at a position corresponding to the center of the air guiding member 14, it may be understood that the orthographic projection of the air outlet 131 on the air guiding member 14 is located at the geometric center of the air guiding member 14, the air guiding member 14 is provided with an air guiding hole 141 penetrating in the axial direction at least partially around the periphery of the air guiding member 14, the air guiding hole 141 may be set around the projection of the air outlet 131 on the air guiding member 14, when the fan 12 works, the air flow generated by the fan 12 flows out from the accommodating cavity 113 and then flows into the first air channel 151 through the air guiding hole 141 on the radial periphery of the air guiding member 14, the air flow in the first air channel 151 finally flows out from the air outlet 131 located at the geometric center of the air guiding member 14 through orthographic projection after being blocked by the air guiding member, the air flow 131 and the air guiding hole 141 at any position can pass through the blocking of the air guiding member and finally gather and flow out at the air outlet 131 opposite to the center of the air guiding member 14, and the noise of the fan 1 is reduced on the premise that the air flow is not influenced.

According to an embodiment of the present utility model, a reinforcing plate 1411 extending in a radial direction is formed in the air guide hole 141. Since the airflow generated by the fan 12 has a high flow rate, the air guide hole 141 receives a large pressure when passing through the air guide hole 141, and thus the structure of the air guide hole 141 may affect the stability of the fan assembly 1. The fan assembly 1 is provided with the reinforcing plate 1411 extending in the radial direction at the position of the air guide hole 141, and it can be understood that the reinforcing plate 1411 radially connects the inner wall of the radially outer end of the air guide hole 141 with the inner wall of the radially inner end, so that the structural strength of the air guide hole 141 is improved, the damage to the air guide hole 141 caused by high-speed air flow during the operation of the fan 12 is avoided, and the stability and safety of the fan assembly 1 are improved.

According to an embodiment of the present utility model, the wind shielding part includes a first wind shielding part 142 and a second wind shielding part 132, the first wind shielding part 142 being disposed at the outer circumference of the wind guiding hole 141 and extending toward the rear cover 13; the second wind shielding portion 132 is disposed at the outer periphery of the air outlet 131 and extends toward the air guide 14.

Since the wind shielding part is a structure for reducing the flow rate of the air flow in the first air duct 151, the configuration of the wind shielding part may affect the noise reduction effect of the fan assembly 1. The fan assembly 1 is provided with a first wind shielding part extending towards the rear cover 13 at the periphery of the wind guide hole 141, meanwhile, the fan assembly 1 is provided with a second wind shielding part 132 extending towards the wind guide piece 14 at the periphery of the wind guide piece 131, when the fan 12 works, air flow generated by the fan 12 enters the first wind channel 151 through the wind guide hole 141 and flows towards the rear cover 13 at first time, the air flow is blocked by the rear cover 13 in the axial direction and flows in the radial direction, the air flow after the first turn is subjected to the action of the first wind shielding part 142 and the second wind shielding part 132, then is subjected to the second turn and flows towards the wind guide piece 14 in the axial direction, when the air flow touches the wind guide piece 14, the air flow after the third turn is subjected to the third turn and flows along the radial direction of the wind guide piece 14, the air flow after the third turn is converged at the position opposite to the wind outlet 131 and is discharged through the wind outlet 131 at fourth time, the first wind shielding part 142 and the second wind shielding part 132 forms a similar labyrinth structure, the air flow in the first wind channel 151 can be subjected to the first wind channel, the high-speed wind channel noise reduction effect is avoided, and the problem of high-speed wind channel 1 is avoided.

According to an embodiment of the present utility model, the projection of the first wind shielding portion 142 in the radial direction and the projection of the second wind shielding portion 132 in the radial direction overlap at least partially. Since the air flow is turned a plurality of times by the first and second wind shielding portions 142 and 132, the configuration of the first and second wind shielding portions 142 and 132 affects the turning of the air flow. The fan assembly 1 overlaps the projected portions of the first wind shielding part 142 and the second wind shielding part 132 in the radial direction when the first wind shielding part 142 and the second wind shielding part 132 are configured, and it is also understood that the sum of the length of the first wind shielding part 142 and the length of the second wind shielding part 132 is greater than the width of the first wind passage 151 in the first wind passage 151. The design of overlapping the projection portions of the first wind shielding portion 142 and the second wind shielding portion 132 in the radial direction ensures that the airflow in the first air duct 151 can be diverted for the second time and the third time in the above embodiment normally, so that the noise reduction effect of the fan assembly 1 is improved.

According to one embodiment of the present utility model, the rear cover 13 is provided with a first sound absorbing member 133 on a side facing the wind guide 14, and the first sound absorbing member 133 is sleeved on at least a part of the outer circumference of the second wind shielding portion 132. Since the air flow passing through the air guide hole 141 first flows toward the rear cover 13, the structure near the position where the rear cover 13 is located may affect noise generated by the air flow entering the first air duct 151. The fan assembly 1 is provided with a first sound absorbing member 133 at one side of the rear cover 13 facing the wind guiding member 14, the first sound absorbing member 133 is sleeved on at least part of the periphery of the second wind shielding portion 132, and the first sound absorbing member 133 can absorb noise generated by air flow movement. The arrangement of the first sound absorbing member 133 reduces noise generated by the air flow in the first air duct 151, and improves noise reduction effect of the fan assembly 1.

According to an embodiment of the present utility model, the rear cover 13 is formed with a plurality of first exhaust holes 134, and any one of the first exhaust holes 134 is directly opposite to at least a portion of the first sound absorbing member 133. Since the air flow passing through the air guide hole 141 first flows toward the rear cover 13, the configuration of the rear cover 13 may affect the noise reduction effect of the fan assembly 1. The fan assembly 1 is provided with a plurality of first exhaust holes 134 on the rear cover 13, the plurality of first exhaust holes 134 are arranged around the ventilation opening at intervals, each exhaust hole is opposite to at least part of the first sound absorbing member 133 in the axial direction, and when the airflow flows towards the rear cover 13, at least part of the airflow passes through the sound absorbing member and is exhausted from the exhaust holes. The setting of exhaust hole can shunt the air current in the first wind channel 151, reduces the noise in air outlet 131 position, and then has improved the noise reduction effect of fan subassembly 1.

According to an embodiment of the present utility model, the housing 11 includes an outer case 111 and an inner case 112, the inner case 112 has an accommodating cavity 113 formed therein, the fan 12 is accommodated in the inner case 112, a second air duct 152 is formed between the inner case 112 and the outer case 111, and the second air duct 152 extends in an axial direction and is opposite to and communicates with the air guide hole 141. Since the blower 12 is accommodated in the accommodation chamber 113 of the housing 11, the flow of the air flow generated by the blower 12 is affected by the housing 11. The casing 11 is configured with an inner casing 112 and an outer casing 111, the inner casing 112 defining an accommodating chamber 113 for accommodating the fan 12, and a second air duct 152 formed between the inner casing 112 and the outer casing 111, the second air duct 152 extending in the axial direction and being opposed to the air guide hole 141. When the fan 12 works, air flow generated by the fan 12 flows out of the accommodating cavity 113, then enters the second air channel 152 and flows along the extending direction of the second air channel 152, air flow in the second air channel 152 enters the first air channel 151 after passing through the air guide hole 141 and finally is discharged through the air outlet 131 and the exhaust hole, the second air channel 152 is limited by the structures of the inner shell 112 and the outer shell 111, the second air channel 152 extends in the axial direction, and the air flow generated by the fan 12 can be guided to flow towards the air guide hole 141 by the formation of the second air channel 152, so that the air flow in the fan assembly 1 is more orderly.

According to an embodiment of the present utility model, the inner case 112 is formed with a second exhaust hole 1121 penetrating in a radial direction, the second exhaust hole 1121 being opposite to at least a portion of the second air duct 152 and communicating the second air duct 152 with the receiving chamber 113. Since the air flow generated by the wind flows from the accommodating chamber 113 defined by the inner case 112 to the second air duct 152, the configuration of the inner case 112 may affect the flow of the air flow. The fan assembly 1 is provided with a second exhaust hole 1121 penetrating in a radial direction on the inner casing 112, through which the air flow generated by the fan 12 may enter the second air duct 152 when the fan 12 is operated. The provision of the second exhaust holes 1121 ensures the normal flow of the air flow in the housing 11.

According to an embodiment of the present utility model, the second sound absorbing member 153 is disposed in the second air duct 152, and the second sound absorbing member 153 is disposed around at least a portion of the outer circumference of the inner case 112. Since the air flow in the first air duct 151 flows in from the second air duct 152, the flow rate of the air flow in the second air duct 152 and the generated noise affect the flow rate of the air flow at the final air outlet 131 and the generated noise. The fan assembly 1 is provided with the second sound absorbing member 153 in the second air duct 152, when the fan 12 works, the air flow generated by the fan 12 enters the second air duct 152 from the accommodating cavity 113 and passes through the second sound absorbing member 153 to pass through the air guide hole 141, and the second sound absorbing member 153 can absorb the noise generated by the air flow in the second air duct 152, so that the flow speed of the air flow flowing into the first air duct 151 and the generated noise are reduced. The provision of the second sound absorbing member 153 further improves the noise reduction effect of the fan assembly 1.

According to one embodiment of the present utility model, a first vibration damper 161 is disposed between the inner casing 112 and the fan 12, and at least a portion of the first vibration damper 161 penetrates the inner casing 112 and abuts against the air guide 14. Since the fan 12 vibrates during operation, the structure on the inner housing 112 affects the stability of the fan 12. The fan assembly 1 is provided with the first vibration reduction piece 161 on the inner shell 112, the first vibration reduction piece 161 is connected with the fan 12 to enable the fan 12 to be fixed with the inner shell 112, at least part of the first vibration reduction piece 161 penetrates through the inner shell 112 to be abutted against the air deflector, and when the fan 12 works, the first vibration reduction piece 161 can buffer vibration generated by the fan 12 to reduce the vibration, so that the stability of the fan 12 after being assembled is improved.

According to an embodiment of the present utility model, the fan assembly 1 further includes a front cover 17, the front cover 17 is disposed at an end of the housing 111 away from the wind guiding member 14 and is connected to the fan 12, and a second vibration damping member 162 is disposed between the front cover 17 and the fan 12, and the second vibration damping member 162 is axially opposite to the first vibration damping member 161. Since the accommodation chamber 113 is opened toward one side, the configuration of the blower assembly 1 may affect the assembly of the blower 12. The fan assembly 1 is provided with the front cover 17, the front cover 17 is connected with one end, far away from the air guide piece 14, of the outer shell 111, during assembly, the fan 12 can be assembled into the accommodating cavity 113 through the open end of the accommodating cavity 113, the front cover 17 can seal the accommodating cavity 113 to prevent the fan 12 from falling off from the accommodating cavity 113, meanwhile, the front cover 17 can be provided with the second vibration reduction piece 162 to be connected with the fan 12, and the second vibration reduction piece 162 can also reduce vibration generated by the operation of the fan 12. It is noted that the first vibration damping member 161 and the second vibration damping member 162 may be axially opposite to each other, and the first vibration damping member 161 and the second vibration damping member 162 which are disposed opposite to each other may improve stability when the fan 12 is assembled.

According to one embodiment of the utility model, the side of the air outlet 131 facing away from the air guide 14 is provided with an extension 18 extending in the axial direction around the air outlet 131. Since different types of noise are generated by the airflow flowing at the position of the air outlet 131, the noise reduction effect of the fan assembly 1 is affected by the configuration of the air outlet 131. The fan assembly 1 has set up the extension 18 that encircles air outlet 131 and extend in axial at the air outlet 131 and deviates from one side of wind-guiding spare 14, and the setting of extension 18 has reserved the space for assembling other structures, when fan assembly 1 produced the condition such as narrowband noise in air outlet 131 department, fan assembly 1 can assemble corresponding amortization structure at extension 18 according to actual conditions, further improves fan assembly 1's noise reduction effect.

In some embodiments, the front cover 17 may be provided with an air inlet 101 that is communicated with the blower 12, where the air inlet 101 may be communicated with an outlet of the cleaning device when the blower assembly 1 is assembled with the cleaning device, and meanwhile, a dust bag may be disposed between the air inlet 101 and the outlet of the cleaning device, and when the blower assembly 1 works, suction force may be generated on the cleaning device to suck impurities inside the cleaning device into the dust bag, so as to clean the inside of the cleaning device.

The cleaning device according to the utility model is briefly described below.

The cleaning device according to the present utility model includes the blower assembly 1 in the above embodiment, and since the cleaning device according to the present utility model is provided with the blower assembly 1 in the above embodiment, during the use of the cleaning device, the air flow generated by the operation of the blower assembly 1 can flow in the first air duct 151 defined by the air guide 14 and the rear cover 13, and the air flow velocity is reduced under the action of the wind shielding part, so that the noise generated by the air flow at the air outlet 131 is reduced, and the user experience is improved.

In summary, in the fan assembly 1 according to the present utility model, the housing 11 is configured in such a manner that the inner housing 112 and the outer housing 111 are mated, the inner housing 112 defines the accommodating cavity 113 that is open toward one side, the accommodating cavity 113 can accommodate the fan 12, the front cover 17 can be disposed on the open side of the inner housing 112, and the front cover 17 can close the accommodating cavity 113 to prevent the fan 12 from falling out of the accommodating cavity 113 after being connected to the housing 11. The opening directions of the outer case 111 and the inner case 112 are opposite, and the air guide 14 and the rear cover 13 may be sequentially disposed at the opening end of the outer case 111, i.e., the air guide 14 is connected to the opening end of the outer case 111, the rear cover 13 is connected to a side of the air guide 14 facing away from the outer case 111, and the assembly of the rear cover 13 and the air guide 14 closes the opening end of the outer case 111, so that a second air duct 152 extending in an axial direction is formed between the inner case 112 and the outer case 111, and an air flow generated by the fan 12 may enter the second air duct 152 through a second exhaust hole 1121 of the inner case 112 and flow in an extending direction of the second air duct 152. The air guide member 14 is formed with an air guide hole 141, and the air guide hole 141 communicates the second air duct 152 with the first air duct 151 defined by the rear cover 13 and the air guide member 14, so that the air flow in the second air duct 152 may enter the first air duct 151 through the air guide hole 141 and finally be discharged out of the fan assembly 1 through the air outlet 131 communicating with the first air duct 151. It should be noted that, a wind shielding part may be disposed in the first air duct 151, where the wind shielding part includes a first wind shielding part 142 disposed in the air guiding hole 141 and extending toward the rear cover 13, and a second wind shielding part 132 disposed in the air outlet 131 and extending toward the air guiding member 14, where the radial projection portions of the first wind shielding part 142 and the second wind shielding part 132 overlap, and the arrangement of the first wind shielding part 142 and the second wind shielding part 132 changes the shape of the first air duct 151, so that the first air duct 151 forms a structure similar to a labyrinth, and the airflow entering the first air duct 151 is blocked by the side wall of the air duct and the wind shielding part to change direction multiple times, so that the flow velocity of the airflow in the first air duct 151 is reduced, and the noise generated by the airflow at the air outlet 131 due to too fast flow velocity is further reduced. The fan assembly 1 is further provided with the first sound absorbing member 133 and the second sound absorbing member 153 at the side of the first air duct 151 near the rear cover 13 and the second air duct 152, respectively, and the first sound absorbing member 133 and the second sound absorbing member 153 can reduce noise generated in the fan assembly 1. The rear cover 13 is further provided with a plurality of first exhaust holes 134 which are opposite to at least part of the first sound absorbing members 133, and the first exhaust holes 134 can split the air flow in the first air duct 151, so as to further reduce the flow speed of the air flow. In addition, the first vibration reducing member 161 and the second vibration reducing member 162 may be provided at the position where the blower 12 is assembled to reduce vibration generated by the operation of the blower 12, thereby improving the stability of the blower assembly 1.

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

In the description of the utility model, a "first feature" or "second feature" may include one or more of such features.

In the description of the present utility model, "plurality" means two or more.

In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.

In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

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

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

Claims (14)

1. A fan assembly for a cleaning apparatus, comprising:

a housing in which a receiving chamber is formed to be opened toward one side;

the fan is accommodated in the accommodating cavity;

the rear cover is connected with the shell, and an air outlet communicated with the accommodating cavity is formed in the rear cover;

the air guide piece is arranged between the rear cover and the shell, an air guide hole communicated with the accommodating cavity is formed in the air guide piece, and a first air channel communicated with the accommodating cavity and the air outlet is formed between the rear cover and the air guide piece; wherein the method comprises the steps of

At least one of the air guide member and the rear cover is formed with a wind shielding portion protruding toward the inside of the first air duct.

2. The fan assembly for a cleaning apparatus according to claim 1, wherein an orthographic projection of the air outlet on the air guide member is located at a center of the air guide member, and at least a part of an outer periphery of the air guide member is formed with an air guide hole penetrating in an axial direction, the air guide hole being provided at an outer periphery of the air outlet.

3. A fan assembly for a cleaning apparatus as claimed in claim 2, wherein a reinforcing plate extending in a radial direction is formed in the air guide hole.

4. The blower assembly for a cleaning apparatus according to claim 2, wherein the wind shielding portion includes:

a first wind shielding part which is arranged at the periphery of the wind guide hole and extends towards the rear cover;

the second wind shielding part is arranged on the periphery of the air outlet and extends towards the air guide piece.

5. The blower assembly for a cleaning apparatus of claim 4, wherein a projection of the first windshield portion in a radial direction and a projection of the second windshield portion in a radial direction at least partially overlap.

6. The fan assembly for a cleaning apparatus according to claim 5, wherein a side of the rear cover facing the air guide is provided with a first sound absorbing member, and the first sound absorbing member is fitted around at least a part of the outer periphery of the second wind shielding portion.

7. The fan assembly for a cleaning appliance of claim 6, wherein the rear cover has a plurality of first exhaust holes formed therein, any one of the first exhaust holes being directly opposite at least a portion of the first sound absorbing member.

8. The blower assembly for a cleaning apparatus of claim 1, wherein the housing comprises:

the fan is accommodated in the inner shell, a second air duct is formed between the inner shell and the outer shell, extends in the axial direction and is opposite to and communicated with the air guide hole.

9. The fan assembly for a cleaning appliance of claim 8, wherein the inner housing has a second vent formed therethrough in a radial direction, the second vent being directly opposite at least a portion of the second air duct and communicating the second air duct with the receiving cavity.

10. The fan assembly for a cleaning appliance of claim 8, wherein a second sound absorbing member is disposed within the second air duct, the second sound absorbing member being disposed around at least a portion of the outer periphery of the inner housing.

11. The fan assembly for a cleaning appliance of claim 10, wherein a first vibration dampening member is disposed between the inner housing and the fan, at least a portion of the first vibration dampening member passing through the inner housing and abutting the air guide member.

12. The blower assembly for a cleaning apparatus of claim 11, further comprising: the front cover is arranged at one end, far away from the air guide piece, of the shell and is connected with the fan, a second vibration reduction piece is arranged between the front cover and the fan, and the second vibration reduction piece is opposite to the first vibration reduction piece in the axial direction.

13. A fan assembly for a cleaning appliance according to claim 1, wherein the side of the air outlet facing away from the air guide is provided with an extension extending in an axial direction around the air outlet.

14. A cleaning appliance comprising the blower assembly of any one of claims 1-13.