Fan assembly for cleaning equipment and cleaning equipment

Abstract

The invention discloses a fan assembly for cleaning equipment and the cleaning equipment. The draught fan assembly comprises a shell, a draught fan, a rear cover and an air guiding piece. 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 communicating with the containing cavity is formed in the rear cover; the air guide piece is arranged between the rear cover and the shell, an air guide hole communicating with the containing cavity is formed in the air guide piece, and a first air channel communicating the containing cavity with the air outlet is formed between the rear cover and the air guide piece. An air blocking part protruding towards the interior of the first air channel is formed on at least one of the air guiding piece and the rear cover. According to the fan assembly, the air guide hole is formed in the air guide piece to enable the containing cavity in the shell to communicate with the air outlet in the rear cover, the air blocking 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 speed of airflow, noise at the air outlet is reduced, and the user experience feeling is improved.

Description

Technical Field

[0001] The present invention relates to the field of household electrical appliances, and in particular to a fan assembly for cleaning equipment and the cleaning equipment. Background Art

[0002] At present, the dust collection system inside the sweeper is usually an internal circulation, that is, the airflow generated by the fan is discharged from the air outlet of the fan and then transported to the air inlet of the sweeper through a pipe. After the airflow enters the dust box of the sweeper, it can stir the debris in the dust box of the sweeper and blow the debris to the air outlet of the sweeper. At this time, it is only necessary to assemble a dust bag at the air outlet of the sweeper to collect the debris in the dust box of the sweeper. At the same time, the air outlet of the sweeper can also be connected to the air inlet of the fan. When the fan is working, the fan can suck the debris at the air outlet of the sweeper while maintaining the air supply to the air inlet of the sweeper to blow the debris. Although such a structure has a good dust collection effect, the overall cost is relatively high, the structure is complex, and the relative cost performance is low. Therefore, in order to respond to market demand, it is necessary to develop an external circulation dust collection module, retain only the pipeline for the fan to suck dust, and remove the pipeline for conveying airflow to the air inlet of the sweeper. When the integration changes from internal circulation to external circulation, the fan outlet is in an open state. At the same time, the wind speed is high, the wind noise at the outlet increases abnormally, and the experience is relatively poor. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a fan assembly for cleaning equipment. According to the fan assembly of the present invention, an air guide is arranged between the shell and the back cover, and an air guide hole is arranged on the air guide to connect the accommodating cavity in the shell with the air outlet on the back cover. The wind shield formed on the air guide and the back cover can change the shape of the first air duct defined by the air guide and the back cover and reduce the flow rate of the air flow, thereby reducing the noise at the air outlet and improving the user experience.

[0004] The present invention also provides a cleaning device comprising the above-mentioned fan assembly.

[0005] According to the present invention, the fan assembly includes a shell, a fan, a back cover, and an air guide member, wherein the shell is formed with a accommodating cavity open to one side; the fan is accommodated in the accommodating cavity; the back cover is connected to the shell, and an air outlet connected to the accommodating cavity is formed on the back cover; the air guide member is arranged between the back cover and the shell and an air guide hole connected to the accommodating cavity is formed on the air guide member, and a first air duct connecting the accommodating cavity with the air outlet is formed between the back cover and the air guide member; wherein, a wind shield protruding toward the inside of the first air duct is formed on at least one of the air guide member and the back cover.

[0006] According to the present invention, the fan assembly is provided with a shell and a back cover, a housing cavity opened toward one side is formed inside the shell, the housing cavity can be used to accommodate the fan, the back cover is connected to the shell, an air outlet for exhausting air is arranged on the back cover, the air outlet is connected to the housing cavity, when the fan is working, the airflow generated by the fan can be discharged through the air outlet. An air guide is also arranged between the back cover and the shell, the air guide connects the shell and the back cover, an air guide hole connected to the housing cavity is formed on the air guide, when the fan is working, the airflow generated by the fan can flow from the housing cavity to the air outlet through the air guide hole, so as to realize the discharge of the airflow inside the fan assembly. At the same time, the air guide and the back cover can form a first air duct connecting the air guide hole with the air outlet when assembled, and the airflow in the housing cavity can enter the first air duct after passing through the air guide hole and flow to the air outlet along the extension direction of the first air duct.

[0007] In addition, during processing, a wind shield protruding toward the first air duct can be respectively provided on the wind guide member and the back cover. When the back cover provided with the wind shield and the wind guide member provided with the wind shield are assembled to each other, the extension direction of the first air duct will be changed due to the influence of the wind shield. Specifically, the wind shield protrudes toward the first air duct, resulting in the first air duct not extending in a fixed direction, but making multiple turns in the initial extension direction and generating a bending area. The setting of the wind shield causes the airflow discharged from the accommodating cavity to continuously turn when flowing in the first air duct, and the speed of the airflow will be reduced due to the obstruction of the inner wall of the first air duct during the turning. Correspondingly, the wind speed at the air outlet position will also be reduced, and the noise generated by the slow wind speed will be smaller than the noise generated by the high-speed airflow. Therefore, the structure of the wind shield can reduce the noise of the air outlet of the fan assembly and improve the user experience when using it.

[0008] According to one embodiment of the present invention, the orthographic projection of the air outlet on the air guide member is located at the center of the air guide member, and at least part of the outer periphery of the air guide member is formed with an axially penetrating air guide hole, and the air guide hole is arranged on the outer periphery of the air outlet.

[0009] According to an embodiment of the present invention, a reinforcing plate extending in the radial direction is formed in the air guide hole.

[0010] According to one embodiment of the present invention, the wind shield portion includes a first wind shield portion and a second wind shield portion, the first wind shield portion is arranged at the periphery of the wind guide hole and extends toward the rear cover; the second wind shield portion is arranged at the periphery of the air outlet and extends toward the wind guide member.

[0011] According to an embodiment of the present invention, a projection of the first wind shielding portion in the radial direction and a projection of the second wind shielding portion in the radial direction at least partially overlap.

[0012] According to an embodiment of the present invention, a first sound absorbing member is disposed on a side of the rear cover facing the wind guide member, and the first sound absorbing member is sleeved on at least a portion of the outer periphery of the second wind shielding portion.

[0013] According to an embodiment of the present invention, a plurality of first air exhaust holes are formed on the rear cover, and any one of the first air exhaust holes is directly opposite to at least a portion of the first sound absorbing member.

[0014] According to one embodiment of the present invention, the shell includes an outer shell and an inner shell, the accommodating cavity is formed inside the inner shell, the fan is accommodated inside the inner shell, and a second air duct is formed between the inner shell and the outer shell, the second air duct extends in the axial direction and is opposite to and connected to the air guide hole.

[0015] According to an embodiment of the present invention, a second air exhaust hole penetrating in the radial direction is formed on the inner shell, and the second air exhaust hole is opposite to at least a portion of the second air duct and connects the second air duct with the accommodating cavity.

[0016] According to an embodiment of the present invention, a second sound absorbing member is disposed in the second air duct, and the second sound absorbing member is disposed around at least a portion of the outer circumference of the inner shell.

[0017] According to an embodiment of the present invention, a first vibration damper is provided between the inner shell and the fan, and at least a portion of the first vibration damper passes through the inner shell and abuts against the air guide member.

[0018] According to one embodiment of the present invention, the fan assembly also includes a front cover, which is arranged at an end of the housing away from the air guide member and connected to the fan, and a second vibration damper is arranged between the front cover and the fan, and the second vibration damper is axially opposite to the first vibration damper.

[0019] According to an embodiment of the present invention, an extension portion surrounding the air outlet and extending in the axial direction is provided on a side of the air outlet facing away from the air guide member.

[0020] The cleaning device according to the present invention is briefly described below.

[0021] The cleaning device according to the present invention includes the fan assembly in the above-mentioned embodiment. Since the cleaning device according to the present invention is provided with the fan assembly in the above-mentioned embodiment, during the use of the cleaning device, the airflow generated by the fan assembly can flow in the first air duct defined by the air guide and the rear cover, and under the action of the wind shield, the airflow velocity is reduced, so that the noise generated by the airflow at the air outlet is reduced, thereby improving the user experience.

[0022] In summary, the fan assembly of the present invention constructs the shell into a form in which an inner shell and an outer shell cooperate. The inner shell defines a receiving chamber that is open to one side, and the receiving chamber can accommodate the fan. A front cover can be provided on the open side of the inner shell. After the front cover is connected to the shell, the receiving chamber can be closed to prevent the fan from falling out of the receiving chamber. The opening directions of the outer shell and the inner shell are opposite. An air guide and a rear cover can be provided in sequence at the open end of the outer shell, that is, the air guide is connected to the open end of the outer shell, and the rear cover is connected to the side of the air guide facing away from the outer shell. The assembly of the rear cover and the air guide closes the open end of the outer shell, so that a second air duct extending in the axial direction is formed between the inner shell and the outer shell, and the airflow generated by the fan can enter the second air duct through the second exhaust hole on the inner shell and flow in the extension direction of the second air duct. An air guide hole is formed on the air guide, and the air guide hole connects the second air duct with the first air duct defined by the rear cover and the air guide, so that the airflow in the second air duct can enter the first air duct through the air guide hole and finally discharge the fan assembly through the air outlet connected to the first air duct. It is worth noting that a windshield can be provided in the first air duct, and the windshield includes a first windshield provided in the air guide hole and extending toward the rear cover, and a second windshield provided in the air outlet and extending toward the air guide member. The radial projections of the first windshield and the second windshield partially overlap. The provision of the first windshield and the second windshield changes the shape of the first air duct, so that the first air duct forms a maze-like structure. The airflow entering the first air duct will be blocked by the side wall of the air duct and the windshield and change direction multiple times, thereby reducing the flow velocity of the airflow in the first air duct, and further reducing the noise generated by the excessive flow velocity of the airflow at the air outlet. The fan assembly is also provided with a first sound absorbing member and a second sound absorbing member on the side of the first air duct close to the rear cover and in the second air duct, respectively. The first sound absorbing member and the second sound absorbing member can reduce the noise generated in the fan assembly. The rear cover is also provided with a plurality of first air exhaust holes that are respectively opposite to at least part of the first sound absorbing member. The first air exhaust holes can divert the airflow in the first air duct, further reducing the flow velocity of the airflow. In addition, a first vibration damping member and a second vibration damping member may be provided at the location where the fan is assembled to reduce vibrations generated by the operation of the fan and improve the stability of the fan assembly.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 is a cross-sectional view of a fan assembly according to one embodiment of the present invention;

[0026] Figure 2 is an exploded view of a fan assembly according to one embodiment of the present invention;

[0027] Figure 3 is a structural diagram of a fan assembly according to one embodiment of the present invention;

[0028] Figure 4 is a structural diagram of a front cover according to an embodiment of the present invention;

[0029] Figure 5 is an exploded view of a fan assembly according to one embodiment of the present invention;

[0030] Figure 6 FIG. 1 is an exploded view of a fan assembly according to an embodiment of the present invention.

[0031] Reference numerals:

[0032] Fan assembly 1;

[0033] Shell 11, outer shell 111, inner shell 112, second air exhaust hole 1121, accommodating chamber 113;

[0034] Fan 12;

[0035] The rear cover 13, the air outlet 131, the second wind shield 132, the first sound absorbing member 133, and the first air exhaust hole 134;

[0036] The wind guide member 14, the wind guide hole 141, the reinforcing plate 1411, and the first wind shielding portion 142;

[0037] A first air duct 151, a second air duct 152, and a second sound absorbing member 153;

[0038] The first vibration damper 161 , the second vibration damper 162 , the front cover 17 , the extension portion 18 , and the air inlet 101 . DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] At present, the dust collection system inside the sweeper is usually an internal circulation, that is, the airflow generated by the fan is discharged from the air outlet of the fan and then transported to the air inlet of the sweeper through a pipe. After the airflow enters the dust box of the sweeper, it can stir the debris in the dust box of the sweeper and blow the debris to the air outlet of the sweeper. At this time, it is only necessary to assemble a dust bag at the air outlet of the sweeper to collect the debris in the dust box of the sweeper. At the same time, the air outlet of the sweeper can also be connected to the air inlet of the fan. When the fan is working, the fan can suck the debris at the air outlet of the sweeper while maintaining the air supply to the air inlet of the sweeper to blow the debris. Although such a structure has a good dust collection effect, the overall cost is relatively high, the structure is complex, and the relative cost performance is low. Therefore, in order to respond to market demand, it is necessary to develop an external circulation dust collection module, retain only the pipeline for the fan to suck dust, and remove the pipeline for conveying airflow to the air inlet of the sweeper. When the integration changes from internal circulation to external circulation, the fan outlet is in an open state. At the same time, the wind speed is high, the wind noise at the outlet increases abnormally, and the experience is relatively poor.

[0041] Reference below Figure 1-Figure 6 A fan assembly according to an embodiment of the present invention is described.

[0042] According to the present invention, the fan assembly 1 includes a shell 11, a fan 12, a back cover 13, and an air guide member 14, wherein the shell 11 is provided with an accommodating cavity 113 which is open toward one side; the fan 12 is accommodated in the accommodating cavity 113; the back cover 13 is connected to the shell 11, and an air outlet 131 which is communicated with the accommodating cavity 113 is formed on the back cover 13; the air guide member 14 is arranged between the back cover 13 and the shell 11, and an air guide hole 141 which is communicated with the accommodating cavity 113 is formed on the air guide member 14, and a first air duct 151 which connects the accommodating cavity 113 with the air outlet 131 is formed between the back cover 13 and the air guide member 14; wherein, a wind shield which protrudes toward the inside of the first air duct 151 is formed on at least one of the air guide member 14 and the back cover 13.

[0043] According to the present invention, the fan assembly 1 is provided with a housing 11 and a rear cover 13. A receiving chamber 113 opened toward one side is formed inside the housing 11. The receiving chamber 113 can be used to receive the fan 12. The rear cover 13 is connected to the housing 11. An air outlet 131 for exhausting air is provided on the rear cover 13. The air outlet is communicated with the receiving chamber 113. When the fan 12 is working, the airflow generated by the fan 12 can be discharged through the air outlet 131. An air guide 14 is also provided between the rear cover 13 and the housing 11. The air guide 14 connects the housing 11 and the rear cover 13. An air guide hole 141 communicated with the receiving chamber 113 is formed on the air guide 14. When the fan 12 is working, the airflow generated by the fan 12 can flow from the receiving chamber 113 through the air guide hole 141 to the air outlet 131, thereby realizing the discharge of the airflow inside the fan assembly 1. At the same time, the air guide member 14 and the back cover 13 can form a first air duct 151 connecting the air guide hole 141 and the air outlet 131 during assembly. The airflow in the accommodating cavity 113 can enter the first air duct 151 after passing through the air guide hole 141 and flow toward the air outlet 131 along the extension direction of the first air duct 151.

[0044] In addition, during processing, a wind shield protruding toward the first air duct 151 can be respectively provided on the wind guide member 14 and the back cover 13. When the back cover 13 provided with the wind shield and the wind guide member 14 provided with the wind shield are assembled with each other, the extension direction of the first air duct 151 will be changed under the influence of the wind shield. Specifically, the wind shield protrudes toward the first air duct 151, resulting in the first air duct 151 not extending in a fixed direction, but making multiple turns in the initial extension direction and generating a bending area. The setting of the wind shield causes the airflow discharged from the accommodating cavity 113 to continuously turn when flowing in the first air duct 151. The speed of the airflow will be reduced due to the obstruction of the inner wall of the first air duct 151 during the turning. Correspondingly, the wind speed at the air outlet 131 will also be reduced. The noise generated by the slow wind speed will be smaller than the noise generated by the high-speed airflow. Therefore, the structure of the wind shield can reduce the noise of the air outlet 131 of the fan assembly 1, thereby improving the user experience.

[0045] According to one embodiment of the present invention, the orthographic projection of the air outlet 131 on the air guide member 14 is located at the center of the air guide member 14, and at least part of the outer periphery of the air guide member 14 is formed with an axially penetrating air guide hole 141, and the air guide hole 141 is arranged at the outer periphery of the air outlet 131. Since the airflow inside the fan assembly 1 will enter the first air duct 151 after passing through the air guide hole 141 and finally be discharged through the air outlet 131, the positions of the air guide hole 141 and the air outlet 131 will affect the flow of the airflow. The rear cover 13 can set the air outlet 131 at a position corresponding to the center of the air guide member 14. It can be understood that the positive projection of the air outlet 131 on the air guide member 14 is located at the geometric center of the air guide member 14, and the air guide member 14 is provided with an axially penetrating air guide hole 141 on at least part of the outer periphery of the air guide member 14. The air guide hole 141 can be arranged around the projection of the air outlet 131 on the air guide member 14. When the fan 12 is working, the airflow generated by the fan 12 flows out of the accommodating cavity 113 and can pass through the air guide hole 141 on the radial outer periphery of the air guide member 14. 1 flows to the first air duct 151, and the airflow in the first air duct 151 is blocked by the wind shield and finally flows out from the air outlet 131 whose orthographic projection is located at the geometric center of the air guide member 14. The position design of the air outlet 131 and the air guide hole 141 makes it possible for the airflow at any position after passing through the air guide hole 141 to be blocked by the wind shield and finally converge and flow out at the air outlet 131 directly opposite to the center of the air guide member 14. Under the premise of not affecting the discharge of the airflow, the airflow at any position is decelerated and noise-reduced by the wind shield, thereby reducing the noise of the fan assembly 1.

[0046] According to one embodiment of the present invention, a reinforcing plate 1411 extending in the radial direction is formed in the air guide hole 141. Since the airflow velocity generated by the fan 12 is high, the air guide hole 141 is subjected to a large pressure when passing through the air guide hole 141. Therefore, the structure of the air guide hole 141 will affect the stability of the fan assembly 1. The fan assembly 1 is provided with a reinforcing plate 1411 extending in the radial direction at the position of the air guide hole 141. It can be understood that the reinforcing plate 1411 radially connects the inner wall of the radial outer end and the inner wall of the radial inner end of the air guide hole 141, thereby improving the structural strength of the air guide hole 141, preventing the high-speed airflow from damaging the air guide hole 141 when the fan 12 is working, and improving the stability and safety of the fan assembly 1.

[0047] According to one embodiment of the present invention, the wind shield portion includes a first wind shield portion 142 and a second wind shield portion 132, the first wind shield portion 142 is arranged at the periphery of the wind guide hole 141 and extends toward the rear cover 13; the second wind shield portion 132 is arranged at the periphery of the air outlet 131 and extends toward the wind guide member 14.

[0048] Since the windshield is a structure for reducing the velocity of the airflow in the first air duct 151, the structure of the windshield will affect the noise reduction effect of the fan assembly 1. The fan assembly 1 is provided with a first windshield extending toward the rear cover 13 on the periphery of the air guide hole 141. At the same time, the fan assembly 1 is also provided with a second windshield 132 extending toward the air guide member 14 on the periphery of the air outlet 131. When the fan 12 is working, the airflow generated by the fan 12 enters the first air duct 151 through the air guide hole 141 and first flows toward the rear cover 13. After the airflow is blocked by the rear cover 13 in the axial direction, it makes a first turn and flows in the radial direction. After the first turn, the airflow is affected by the first windshield 142 and the second windshield 132 and makes a second turn. It flows axially toward the air guide member 14, and when it touches the thickness of the air guide member 14, it will turn for the third time and continue to flow radially along the air guide member 14. The airflow after the third turn will converge at a position directly opposite the air outlet 131 and make a fourth turn before being discharged through the air outlet 131. The structure of the first wind shield portion 142 and the second wind shield portion 132 allows the first air duct 151 to form a maze-like structure. The airflow in the first air duct 151 will turn multiple times, which reduces the flow rate of the airflow, avoids the problem of high noise generated by high-speed airflow, and thereby improves the noise reduction effect of the fan assembly 1.

[0049] According to one embodiment of the present invention, the radial projection of the first windshield 142 and the radial projection of the second windshield 132 at least partially overlap. Since the airflow will turn multiple times under the influence of the first windshield 142 and the second windshield 132, the structure of the first windshield 142 and the second windshield 132 will affect the turning of the airflow. When constructing the first windshield 142 and the second windshield 132, the fan assembly 1 makes the radial projections of the first windshield 142 and the second windshield 132 partially overlap, which can also be understood as that in the first air duct 151, the sum of the length of the first windshield 142 and the length of the second windshield 132 is greater than the width of the first air duct 151. The design of the radial projections of the first windshield 142 and the second windshield 132 partially overlapping ensures that the airflow in the first air duct 151 can normally perform the second and third turns in the above embodiment, thereby improving the noise reduction effect of the fan assembly 1.

[0050] According to one embodiment of the present invention, a first sound absorbing member 133 is provided on the side of the rear cover 13 facing the air guide member 14, and the first sound absorbing member 133 is sleeved on at least part of the outer periphery of the second wind shield 132. Since the airflow passing through the air guide hole 141 will first flow toward the rear cover 13, the structure near the position of the rear cover 13 will affect the noise generated by the airflow entering the first air duct 151. The fan assembly 1 is provided with a first sound absorbing member 133 on the side of the rear cover 13 facing the air guide member 14, and the first sound absorbing member 133 is sleeved on at least part of the outer periphery of the second wind shield 132, and the first sound absorbing member 133 can absorb the noise generated by the movement of the airflow. The provision of the first sound absorbing member 133 reduces the noise generated by the airflow in the first air duct 151, and improves the noise reduction effect of the fan assembly 1.

[0051] According to one embodiment of the present invention, a plurality of first air exhaust holes 134 are formed on the rear cover 13, and any one of the first air exhaust holes 134 is directly opposite to at least part of the first sound absorbing member 133. Since the airflow passing through the air guide hole 141 will first flow toward the rear cover 13, the structure of the rear cover 13 will affect the noise reduction effect of the fan assembly 1. The fan assembly 1 is provided with a plurality of first air exhaust holes 134 on the rear cover 13, and the plurality of first air exhaust holes 134 are arranged at intervals around the vent. In the axial direction, each air exhaust hole is directly opposite to at least part of the first sound absorbing member 133, and when the airflow flows toward the rear cover 13, at least part of the airflow will pass through the sound absorbing member and be discharged from the air exhaust hole. The provision of the air exhaust hole can divert the airflow in the first air duct 151, reduce the airflow in the first air duct 151, reduce the noise at the position of the air outlet 131, and thereby improve the noise reduction effect of the fan assembly 1.

[0052] According to one embodiment of the present invention, the housing 11 includes an outer shell 111 and an inner shell 112, a receiving chamber 113 is formed inside the inner shell 112, the fan 12 is received inside the inner shell 112, a second air duct 152 is formed between the inner shell 112 and the outer shell 111, the second air duct 152 extends in the axial direction and is directly opposite to and communicates with the air guide hole 141. Since the fan 12 is received in the receiving chamber 113 of the housing 11, the flow of the airflow generated by the fan 12 will be affected by the housing 11. The housing 11 is constructed with an inner shell 112 and an outer shell 111, the interior of the inner shell 112 defines a receiving chamber 113 for receiving the fan 12, a second air duct 152 is formed between the inner shell 112 and the outer shell 111, the second air duct 152 extends in the axial direction and is directly opposite to the air guide hole 141. When the fan 12 is working, the airflow generated by the fan 12 flows out of the accommodating chamber 113 and enters the second air duct 152 and flows along the extension direction of the second air duct 152. The airflow in the second air duct 152 passes through the air guide hole 141 and enters the first air duct 151 and is finally discharged through the air outlet 131 and the exhaust hole. The structure of the inner shell 112 and the outer shell 111 defines the second air duct 152 and extends the second air duct 152 in the axial direction. The formation of the second air duct 152 can guide the airflow generated by the fan 12 to flow toward the air guide hole 141, so that the flow of the airflow in the fan assembly 1 is more orderly.

[0053] According to one embodiment of the present invention, a second exhaust hole 1121 penetrating in the radial direction is formed on the inner shell 112, and the second exhaust hole 1121 is directly opposite to at least a portion of the second air duct 152 and connects the second air duct 152 with the accommodating chamber 113. Since the airflow generated by the wind flows from the accommodating chamber 113 defined by the inner shell 112 to the second air duct 152, the structure of the inner shell 112 will affect the flow of the airflow. The fan assembly 1 is provided with a second exhaust hole 1121 penetrating in the radial direction on the inner shell 112, and when the fan 12 is working, the airflow generated by the fan 12 can enter the second air duct 152 through the second exhaust hole. The provision of the second exhaust hole 1121 ensures the normal flow of the airflow in the housing 11.

[0054] According to one embodiment of the present invention, a 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 part of the outer periphery of the inner shell 112. Since the airflow in the first air duct 151 flows in from the second air duct 152, the flow rate of the airflow in the second air duct 152 and the noise generated will affect the flow rate of the airflow at the final air outlet 131 and the noise generated. The fan assembly 1 is provided with a second sound absorbing member 153 in the second air duct 152. When the fan 12 is working, the airflow generated by the fan 12 enters the second air duct 152 from the accommodating chamber 113 and needs to pass through the second sound absorbing member 153 before passing through the air guide hole 141. The second sound absorbing member 153 can absorb the noise generated by the airflow in the second air duct 152, so that the flow rate of the airflow flowing into the first air duct 151 and the noise generated are reduced. The provision of the second sound absorbing member 153 further improves the noise reduction effect of the fan assembly 1.

[0055] According to one embodiment of the present invention, a first vibration damper 161 is provided between the inner shell 112 and the fan 12, and at least a portion of the first vibration damper 161 passes through the inner shell 112 and abuts against the air guide 14. Since the fan 12 generates vibrations when it is working, the structure on the inner shell 112 will affect the stability of the fan 12. The fan assembly 1 is provided with a first vibration damper 161 on the inner shell 112, and the first vibration damper 161 is connected to the sub-fan 12 to fix the fan 12 to the inner shell 112. At the same time, at least a portion of the first vibration damper 161 also passes through the inner shell 112 and abuts against the air guide plate. When the fan 12 is working, the first vibration damper 161 can buffer and reduce vibrations generated by the fan 12, thereby improving the stability of the fan 12 after assembly.

[0056] According to one embodiment of the present invention, the fan assembly 1 further comprises a front cover 17, which is arranged at one end of the housing 111 away from the air guide 14 and connected to the fan 12, and a second vibration damper 162 is arranged between the front cover 17 and the fan 12, and the second vibration damper 162 is axially opposite to the first vibration damper 161. Since the accommodating chamber 113 is open to one side, the structure of the fan assembly 1 will affect the assembly of the fan 12. The fan assembly 1 is provided with a front cover 17, which is connected to one end of the housing 111 away from the air guide 14. During assembly, the fan 12 can be assembled into the accommodating chamber 113 through the open end of the accommodating chamber 113, and the front cover 17 can close the accommodating chamber 113 to prevent the fan 12 from falling out of the accommodating chamber 113. At the same time, a second vibration damper 162 can be arranged on the front cover 17 to be connected to the fan 12, and the second vibration damper 162 can also reduce the vibration generated by the operation of the fan 12. It is worth noting that the first vibration damper 161 and the second vibration damper 162 may be directly opposite to each other in the axial direction. The directly oppositely disposed first vibration damper 161 and the second vibration damper 162 can improve the stability of the fan 12 during assembly.

[0057] According to one embodiment of the present invention, an extension portion 18 surrounding the air outlet 131 and extending in the axial direction is provided on the side of the air outlet 131 away from the air guide 14. Since the air flow at the position of the air outlet 131 will generate different types of noise, the structure of the position of the air outlet 131 will affect the noise reduction effect of the fan assembly 1. The fan assembly 1 is provided with an extension portion 18 surrounding the air outlet 131 and extending in the axial direction on the side of the air outlet 131 away from the air guide 14. The setting of the extension portion 18 reserves space for assembling other structures. When the fan assembly 1 generates narrow-band noise at the air outlet 131, the fan assembly 1 can be equipped with a corresponding silencer structure on the extension portion 18 according to actual conditions, so as to further improve the noise reduction effect of the fan assembly 1.

[0058] In some embodiments, an air inlet 101 connected to the fan 12 can be provided on the front cover 17. The air inlet 101 can be connected to the outlet of the cleaning equipment when the fan assembly 1 is assembled with the cleaning equipment. At the same time, a dust bag can be provided between the air inlet 101 and the outlet of the cleaning equipment. When the fan assembly 1 is working, it can generate suction to the cleaning equipment to suck the debris inside the cleaning equipment into the dust bag, thereby cleaning the inside of the cleaning equipment.

[0059] The cleaning device according to the present invention is briefly described below.

[0060] The cleaning device according to the present invention includes the fan assembly 1 in the above embodiment. Since the cleaning device according to the present invention is provided with the fan assembly 1 in the above embodiment, during the use of the cleaning device, the airflow generated by the fan assembly 1 can flow in the first air duct 151 defined by the air guide 14 and the rear cover 13, and under the action of the wind shield, the airflow velocity is reduced, so that the noise generated by the airflow at the air outlet 131 is reduced, thereby improving the user experience.

[0061] To sum up, the fan assembly 1 of the present invention constructs the shell 11 into a form in which an inner shell 112 and an outer shell 111 cooperate with each other. The inner shell 112 defines a accommodating cavity 113 open to one side, and the accommodating cavity 113 can accommodate the fan 12. A front cover 17 can be provided on the open side of the inner shell 112. After the front cover 17 is connected to the shell 11, the accommodating cavity 113 can be closed to prevent the fan 12 from falling out of the accommodating cavity 113. The opening directions of the outer shell 111 and the inner shell 112 are opposite. The air guide 14 and the back cover 13 can be arranged in sequence at the open end of the outer shell 111, that is, the air guide 14 is connected to the open end of the outer shell 111, and the back cover 13 is connected to the side of the air guide 14 facing away from the outer shell 111. The assembly of the back cover 13 and the air guide 14 closes the open end of the outer shell 111, so that a second air duct 152 extending in the axial direction is formed between the inner shell 112 and the outer shell 111. The airflow generated by the fan 12 can enter the second air duct 152 through the second exhaust hole 1121 on the inner shell 112 and flow in the extension direction of the second air duct 152. An air guide hole 141 is formed on the air guide member 14, and the air guide hole 141 connects 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 airflow in the second air duct 152 can enter the first air duct 151 through the air guide hole 141 and finally be discharged from the fan assembly 1 through the air outlet 131 connected to the first air duct 151. It is worth noting that a wind shield may be provided in the first air duct 151, the wind shield comprising a first wind shield 142 provided at the air guide hole 141 and extending toward the rear cover 13, and a second wind shield 132 provided at the air outlet 131 and extending toward the air guide member 14, the radial projections of the first wind shield 142 and the second wind shield 132 partially overlap, and the provision of the first wind shield 142 and the second wind shield 132 changes the shape of the first air duct 151, so that the first air duct 151 forms a maze-like structure, and the airflow entering the first air duct 151 will be blocked by the side walls of the air duct and the wind shield and change direction multiple times, thereby reducing the flow velocity of the airflow in the first air duct 151, and thereby reducing the noise generated by the excessive flow velocity of the airflow at the air outlet 131. The fan assembly 1 is also provided with a first sound absorbing member 133 and a second sound absorbing member 153 on the side of the first air duct 151 close to the rear cover 13 and in the second air duct 152, respectively. The first sound absorbing member 133 and the second sound absorbing member 153 can reduce the noise generated in the fan assembly 1. The rear cover 13 is also provided with a plurality of first air exhaust holes 134 respectively facing at least part of the first sound absorbing member 133. The first air exhaust holes 134 can divert the airflow in the first air duct 151, further reducing the flow rate of the airflow. In addition, a first vibration damping member 161 and a second vibration damping member 162 can be provided at the position where the fan 12 is assembled to reduce the vibration generated by the operation of the fan 12 and improve the stability of the fan assembly 1.

[0062] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0063] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0064] In the description of the present invention, "plurality" means two or more.

[0065] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0066] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0068] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A fan assembly for cleaning equipment, characterized in that: include: A housing, wherein a receiving cavity opened toward one side is formed in the housing; A fan, the fan being accommodated in the accommodating chamber; A rear cover, the rear cover is connected to the housing, and an air outlet communicating with the accommodating cavity is formed on the rear cover; An air guide member, the air guide member is disposed between the rear cover and the housing and is formed with an air guide hole communicating with the accommodating cavity, and a first air duct communicating the accommodating cavity with the air outlet is formed between the rear cover and the air guide member; in A wind shielding portion protruding toward the inside of the first air duct is formed on at least one of the wind guide member and the rear cover.

2. The fan assembly for cleaning equipment according to claim 1, characterized in that: The orthographic projection of the air outlet on the air guide member is located at the center of the air guide member, and at least a portion of the outer periphery of the air guide member is formed with an axially penetrating air guide hole, and the air guide hole is arranged on the outer periphery of the air outlet.

3. The fan assembly for cleaning equipment according to claim 2, characterized in that: A reinforcing plate extending in the radial direction is formed in the air guide hole.

4. The fan assembly for cleaning equipment according to claim 2, characterized in that: The wind shielding portion comprises: A first wind shielding portion, the first wind shielding portion is arranged at the outer periphery of the air guide hole and extends toward the rear cover; A second wind shielding portion is disposed at the outer periphery of the air outlet and extends toward the air guide member.

5. The fan assembly for cleaning equipment according to claim 4, characterized in that: A projection of the first wind shielding portion in the radial direction and a projection of the second wind shielding portion in the radial direction at least partially overlap.

6. The fan assembly for cleaning equipment according to claim 5, characterized in that: A first sound absorbing member is disposed on a side of the rear cover facing the wind guide member, and the first sound absorbing member is sleeved on at least a portion of the outer periphery of the second wind shielding portion.

7. The fan assembly for cleaning equipment according to claim 6, characterized in that: A plurality of first air exhaust holes are formed on the rear cover, and any one of the first air exhaust holes is directly opposite to at least a portion of the first sound absorbing member.

8. The fan assembly for cleaning equipment according to claim 1, characterized in that: The housing comprises: An outer shell and an inner shell, the inner shell forms the accommodating cavity, the fan is accommodated in the inner shell, a second air duct is formed between the inner shell and the outer shell, the second air duct extends in the axial direction and is opposite to and connected with the air guide hole.

9. The fan assembly for cleaning equipment according to claim 8, characterized in that: The inner shell is formed with a second air exhaust hole which penetrates in the radial direction. The second air exhaust hole is directly opposite to at least a portion of the second air duct and connects the second air duct with the accommodating cavity.

10. The fan assembly for cleaning equipment according to claim 8, characterized in that: A second sound absorbing member is disposed in the second air duct, and the second sound absorbing member is disposed around at least a portion of the outer circumference of the inner shell.

11. The fan assembly for cleaning equipment according to claim 10, characterized in that: A first vibration damper is disposed between the inner shell and the fan, and at least a portion of the first vibration damper passes through the inner shell and abuts against the air guide.

12. The fan assembly for cleaning equipment according to claim 11, characterized in that: Also includes: A front cover is arranged at one end of the housing away from the air guide and connected to the fan, a second vibration damper is arranged between the front cover and the fan, and the second vibration damper is axially opposite to the first vibration damper.

13. The fan assembly for cleaning equipment according to claim 1, characterized in that: An extension portion surrounding the air outlet and extending in the axial direction is arranged on a side of the air outlet facing away from the air guide member.

14. A cleaning device, characterized in that: A fan assembly comprising any one of claims 1-13.

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