Filter module, filter device and blower

Abstract

The invention discloses a filtering module, a filtering device and a blower, the filtering module comprises a filtering piece, the filtering piece is arranged at an air inlet of the blower, the surface of the air inlet side of the filtering piece is in a concave-convex shape so as to form a dust guiding part and an air inlet part, the surface of the dust guiding part is arranged to be a smooth surface, and the air inlet part is provided with a through hole in a penetrating mode in the air inlet direction of the filtering piece; the dust guide part is used for guiding dust to one end of the filter. According to the air purifier, no through hole is formed in the dust guide part of the filter part, so that impurities carried in the air flow can be intercepted in the dust guide part, the surface of the dust guide part is arranged to be the smooth surface, and the smooth surface is beneficial to reducing the friction resistance to the impurities, so that the impurities can be separated from the air flow under the action of gravity or the driving action of the driving device. The filter part slides into the dust collection cavity in the extending direction of the dust guide part, the accumulation amount of impurities on the surface of the air inlet side of the filter part is reduced, and the purpose of collecting the impurities in the dust collection cavity is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of hair care equipment, and in particular relates to a filter module, a filter device and a hair dryer. Background Art

[0002] A hair dryer is a handheld appliance that can draw outside air into it and heat the air to dry the hair. It is often used for hairdressing and daily hair care. In order to prevent the air inlet from sucking in foreign matter such as hair when driven by a high-speed motor, existing hair dryers generally have a filter device at their air inlet.

[0003] Hair dryers currently on the market are generally equipped with metal filters, or further equipped with a filter screen assembly on the air outlet side of the metal filter. Although the existing filter screen assembly can prevent broken hair and fine dust from entering, it is easy to accumulate a thick layer of dust on the surface of the air inlet side after long-term use, and needs to be cleaned irregularly, otherwise it will affect the performance of the hair dryer. To solve this problem, common hair dryers currently on the market require users to manually open the metal filter, manually disassemble the filter screen assembly, and then use a soft brush or water to clean it, which is troublesome to operate and has a poor cleaning effect. Summary of the invention

[0004] Therefore, the present invention aims to solve the problem that the filter assembly in the existing hair dryer is difficult to disassemble and has a poor cleaning effect.

[0005] In order to solve the above technical problems, the present invention provides a filtering module, comprising:

[0006] A filter element is used to be arranged at the air inlet of a hair dryer. The filter element is provided with a dust guide portion and an air inlet portion. The air inlet surface of the air inlet portion is provided with a through hole. The dust guide portion is concave relative to the air inlet portion, and the surface of the dust guide portion is a smooth surface. The dust guide portion is used to guide dust to one end of the filter element.

[0007] According to one embodiment of the present application, it also includes a dust collecting piece, which is provided with a dust collecting chamber. The dust collecting piece is connected to the filter element so that when the air flow passes through the filter element, impurities carried in the air flow are guided into the dust collecting chamber through the dust guiding part.

[0008] According to an embodiment of the present application, a plurality of the dust guiding parts and the air inlet parts are arranged alternately in sequence.

[0009] According to an embodiment of the present application, the air inlet portion has a first connecting surface connected to the adjacent dust guide portion, and in the air inlet direction of the filter element, the first connecting surface extends obliquely or in an arc shape toward the dust guide portion.

[0010] According to an embodiment of the present application, the air inlet surface of the air inlet portion is configured as an outwardly convex arc surface, a platform surface, or a conical surface.

[0011] According to an embodiment of the present application, the dust guiding portion has a second connecting surface connected to the adjacent air inlet portion, and in the air inlet direction of the filter element, the second connecting surface extends obliquely or in an arc shape toward the air inlet portion.

[0012] According to an embodiment of the present application, the surface of the dust guiding portion is configured as an arc surface, a platform surface, or a conical surface.

[0013] According to an embodiment of the present application, at least a portion of the dust collecting part is exposed on the outer wall of the hair dryer, and the exposed portion is arranged corresponding to the dust collecting cavity.

[0014] According to an embodiment of the present application, at least the exposed portion of the dust collecting piece is made of a transparent material to allow visualization of the inside of the dust collecting cavity.

[0015] According to an embodiment of the present application, the dust collecting part is accommodated in a receiving groove recessed in the outer wall of the hair dryer, and can be slidably pulled out from the receiving groove under the driving of an external force.

[0016] According to an embodiment of the present application, the dust collecting part is accommodated in a receiving groove recessed on the outer wall of the third filter module of the hair dryer, and can be slidably pulled out of the receiving groove under the driving of an external force.

[0017] According to an embodiment of the present application, the dust collecting part is accommodated in a receiving groove formed by the outer wall of the hair dryer and the outer wall of the third filter module, and can be slidably pulled out of the receiving groove under the driving of an external force.

[0018] According to one embodiment of the present application, the dust collecting element is arranged in a local area corresponding to the filter element, and the third filter module is provided with a guide groove, which connects the dust collecting chamber and the dust guiding part at a non-local area to guide the impurities in the dust guiding part into the dust collecting chamber.

[0019] According to an embodiment of the present application, the dust collecting cavity includes one dust collecting chamber or multiple dust collecting chambers.

[0020] According to one embodiment of the present application, the dust collecting chamber includes a first dust collecting chamber and a second dust collecting chamber, the first dust collecting chamber is connected to the dust guiding portion, the second dust collecting chamber is connected and arranged on a side of the first dust collecting chamber away from the dust guiding portion, and a screening structure is arranged at the connection between the first dust collecting chamber and the second dust collecting chamber, the screening structure is used to retain large-sized impurities in the first dust collecting chamber and transport small-sized impurities into the second dust collecting chamber.

[0021] According to one embodiment of the present application, the dust collecting chamber includes a first dust collecting chamber and a second dust collecting chamber, the first dust collecting chamber and the second dust collecting chamber are arranged side by side, the second dust collecting chamber is connected to the dust guiding part, and a screening structure is provided at the connection between the second dust collecting chamber and the dust guiding part, the screening structure is used to transport small-sized impurities into the second dust collecting chamber, and the opening of the first dust collecting chamber is arranged adjacent to the screening structure to allow large-sized impurities trapped on the screening structure to enter the first dust collecting chamber through the opening.

[0022] According to an embodiment of the present application, the dust collecting cavity includes at least one dust collecting chamber, and the filtering device further includes:

[0023] Alarm module;

[0024] a sensor module, disposed in the dust collecting chamber, wherein the sensor module triggers a sensing signal when the amount of dust collected in the dust collecting chamber reaches a preset threshold; and

[0025] The control module is electrically connected to the alarm module and the sensor module respectively, so as to control the alarm module to issue an alarm prompt when receiving the sensing signal.

[0026] According to an embodiment of the present application, the dust collecting chamber is provided with at least two;

[0027] The sensing module triggers a sensing signal associated with any of the dust collecting chambers when the amount of dust collected in the dust collecting chambers reaches a corresponding preset threshold value;

[0028] When the control module receives the sensing signal associated with any of the dust collecting chambers, the control module controls the alarm module to issue an alarm prompt.

[0029] According to an embodiment of the present application, the sensing signals associated with each of the dust collecting chambers are configured differently.

[0030] According to one embodiment of the present application, the sensing module includes a photoelectric sensor, which includes a photoelectric emitting part and a photoelectric receiving part. The photoelectric emitting part and the photoelectric receiving part are arranged on opposite side walls of the dust collecting chamber. When the photoelectric emitting part emits a photoelectric signal and the photoelectric receiving part does not receive the photoelectric signal, the photoelectric sensor triggers the sensing signal.

[0031] According to an embodiment of the present application, the sensing module includes a photosensor, which is disposed in the dust collecting chamber, and triggers the sensing signal when a resistance value of the photosensor is greater than a resistance threshold.

[0032] According to an embodiment of the present application, at least two sensor modules are provided, and they correspond one to one to the dust collecting chambers.

[0033] In addition, to achieve the above object, the present invention also provides a filtering module, comprising:

[0034] A filter element is used to be arranged at the air inlet of a hair dryer. The filter element is provided with a dust guide portion and an air inlet portion. A through hole is provided on the air inlet surface of the air inlet portion. The dust guide portion is concave relative to the air inlet portion, and the surface of the dust guide portion is a smooth surface. The dust guide portion is located at one end of the filter element and is used to collect dust.

[0035] In addition, to achieve the above object, the present invention further provides a filtering device, comprising:

[0036] A filter assembly, arranged at the air inlet of the hair dryer; and

[0037] An interference member is located at one end of the filter assembly and has an interference stroke that moves toward the other end of the filter assembly under the drive of an external force. When performing the interference stroke, the interference member acts on the filter assembly to separate impurities accumulated on the filter assembly from the filter assembly.

[0038] According to an embodiment of the present application, when performing the interference stroke, the interference member maintains sliding contact with the filter assembly.

[0039] According to an embodiment of the present application, the filter assembly includes a second filter module, the interference member is arranged on the air inlet side of the second filter module, and when performing the interference stroke, the interference member is separated from impurities accumulated on the air inlet side of the second filter module.

[0040] According to an embodiment of the present application, the filter assembly further includes a third filter module, the third filter module is disposed on the air inlet side of the second filter module and is spaced apart from the second filter module;

[0041] The interference member is disposed at a gap between the second filter module and the third filter module.

[0042] According to an embodiment of the present application, when performing the interference stroke, the interference member also acts on the third filter module to separate impurities accumulated on the air outlet side of the third filter module.

[0043] According to one embodiment of the present application, the interference member is fixed to one end of the air outlet side of the third filter module. As the third filter module moves relative to the second filter module, the interference member acts on the second filter module to remove impurities accumulated on the air inlet side of the second filter module.

[0044] According to an embodiment of the present application, the filtering device further comprises an operating component, and under the drive of an external force, the operating component cooperates with the filtering assembly and / or the interference member to form an interference stroke of the interference member.

[0045] According to one embodiment of the present application, the operating component includes at least one sliding protrusion, a sliding groove is provided on the filter assembly, the sliding protrusion is fixed on the interference member, and the sliding protrusion extends out of the filter assembly through the sliding groove, so that the user drives the sliding protrusion to slide along the length direction of the sliding groove to form the interference stroke.

[0046] According to an embodiment of the present application, the operating component further includes an elastic member, one end of which is fixed relative to the filter assembly, and the other end of which is connected to the interference member, so that when the external force driving is cancelled, the elastic member drives the interference member to reset.

[0047] According to an embodiment of the present application, the filter assembly includes a filter module as described in any one of claims 1 to 23.

[0048] According to one embodiment of the present application, the interference member is also arranged at one end of the dust collecting chamber, and the other end of the dust collecting chamber is open, and the interference member performs the interference stroke from one end to the other end in the dust collecting chamber to remove impurities stored in the dust collecting chamber.

[0049] According to one embodiment of the present application, the filter device is arranged on the air inlet of the hair dryer body, the filter assembly is fixed on the body, and a dust outlet is provided at the end end of the interference stroke so that dust on the filter assembly can be discharged from the filter device through the dust outlet.

[0050] According to an embodiment of the present application, the filter assembly is adapted to the shape of the air inlet, and the dust outlet is provided at one end of the filter assembly away from the body;

[0051] The machine body further comprises a bottom cover, and the bottom cover is arranged at the dust outlet.

[0052] According to an embodiment of the present application, the bottom cover is capable of opening and closing the dust outlet, and when the dust outlet is opened, impurities detached from the filter assembly are discharged outwardly through the dust outlet.

[0053] According to an embodiment of the present application, the bottom cover is fixedly connected to the body, and a dust outlet is provided on the bottom cover corresponding to the interference member, so that impurities detached from the filter assembly can be discharged outwardly through the dust outlet.

[0054] In addition, to achieve the above-mentioned purpose, the present invention further provides a hair dryer, which includes the filter module as described above and / or includes the filter device as described above.

[0055] The technical solution provided by the present invention has the following advantages:

[0056] In the filter assembly provided by the present invention, when the driving device in the hair dryer drives the airflow to flow toward the air outlet through the air inlet, since the dust guiding portion of the filter element is not provided with a through hole, the impurities carried in the airflow can be trapped in the dust guiding portion, and since the surface of the dust guiding portion is set to a smooth surface, the smooth surface helps to reduce the friction resistance to the impurities, so that the impurities can slide into the dust collecting chamber along the extension direction of the dust guiding portion with the help of gravity or under the driving action of the driving device, which helps to reduce the accumulation of impurities on the surface of the air inlet side of the filter element and achieve the purpose of collecting impurities in the dust collecting chamber; in addition, since the through hole is provided at the air inlet portion of the filter element, sufficient ventilation of the filter element can be ensured, and due to the provision of the through hole, the contact area between the air inlet portion and the impurities is reduced, so that the impurities can slide into the dust guiding portion along the connecting surface between the air inlet portion and the dust guiding portion, and then be collected in the dust collecting chamber through the dust guiding portion. The present invention helps to reduce the amount of impurities accumulated on the filter element as much as possible while ensuring sufficient ventilation volume, and collects the impurities in a dust collecting chamber. It only requires the impurities in the dust collecting chamber to be cleaned uniformly, and there is no need for the user to manually dismantle the entire filter module for cleaning. This helps to simplify the overall cleaning operation of the filter module and helps to optimize the cleaning effect of the filter module.

[0057] In the filtering device provided by the present invention, the filter assembly is arranged at the air inlet of the hair dryer, and the initial position of the interference member is located at one end edge of the filter assembly, thereby reducing obstruction to the filter assembly, ensuring that the filter assembly has sufficient ventilation volume, and realizing the filtering effect of the filter assembly on the airflow entering the hair dryer, thereby intercepting impurities in the airflow on the air inlet side of the filter assembly; when the external force drives the interference member to perform the interference stroke, the interference member will move from its initial position to the other end edge of the filter assembly, passing through the air inlet side of the entire filter assembly, and generating mutual interference with the impurities accumulated on the air inlet side of the filter assembly, and the interference causes the impurities to detach from the air inlet side of the filter assembly, thereby realizing the cleaning of the filter assembly without the need to remove the filter assembly, thereby helping to simplify the cleaning operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0059] Figure 1 A schematic diagram of the three-dimensional structure of a hair dryer according to a first embodiment of the present invention;

[0060] Figure 2 for Figure 1 Schematic diagram of partial structural decomposition of the hair dryer;

[0061] Figure 3 for Figure 1 A schematic diagram of an axial section of a portion of the structure of the central blower at the air inlet;

[0062] Figure 4 for Figure 1 A schematic radial cross-sectional view of a portion of the structure of the central blower at the air inlet;

[0063] Figure 5 for Figure 1 Schematic diagram of the three-dimensional structure of the dust collecting part;

[0064] Figure 6 for Figure 1 A schematic diagram of the assembly of the dust collecting member and the sensor module in the first embodiment;

[0065] Figure 7 for Figure 1 A schematic diagram of the assembly of the dust collecting member and the sensor module in the second embodiment;

[0066] Figure 8 A schematic diagram of the three-dimensional structure of a second embodiment of a hair dryer provided by the present invention;

[0067] Fig. 9 for Figure 8 Schematic diagram of partial structural decomposition of the hair dryer;

[0068] Fig.10 for Figure 8 A schematic diagram of the structure of the third filtering module;

[0069] Fig.11 for Figure 8 A schematic diagram of the structure when the middle interference member is in the initial position;

[0070] Fig.12 for Figure 8 The schematic diagram of the structure after the interference part completes the interference stroke;

[0071] Fig.13 for Figure 8 The schematic diagram of the structure of the interference element;

[0072] Fig.14 for Figure 8 A schematic structural diagram of a first embodiment of a mid-bottom cover;

[0073] Fig.15 for Figure 8 A schematic structural diagram of a second embodiment of a mid-bottom cover;

[0074] Fig.16 for Figure 8 A schematic structural diagram of a third embodiment of a mid-bottom cover.

[0075] Description of reference numerals:

[0076] 1 hair dryer; 100 machine body; 110 air cylinder; 111 air outlet; 120 handle; 121 air inlet; 122 lateral convex step; 200 first filter module; 210 filter element; 211 dust guide part; 212 air inlet; 213 first connecting surface; 220 dust collecting element; 221 first dust collecting chamber; 222 second dust collecting chamber; 223 upstream baffle arm; 224 downstream baffle arm; 230 screening structure; 241 photoelectric emitting part; 242 photoelectric receiving part; 250 photosensor; 260 lighting component; 300 second filter module; 400 interference element; 410 sliding protrusion; 500 third filter module; 510 slide groove; 600 elastic element; 700 bottom cover; 710 rotary guide structure; 720 magnetic structure; 730 dust outlet. DETAILED DESCRIPTION

[0077] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0078] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0079] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0080] See also Figure 1 to Figure 2The present invention provides a filter module, which is mainly used in a hair dryer 1. It can be understood that the hair dryer 1 generally includes a body 100 and a filter assembly. Among them, the filter assembly generally includes one or more filter modules. The body 100 includes a wind tube 110 and a handle 120 that are connected. The wind tube 110 and the handle 120 are integrally formed or separately arranged and detachably connected. Generally, an air inlet 121 is provided on the side wall of the handle 120, and an air outlet 111 is provided at one end of the wind tube 110. An air supply channel connecting the air inlet 121 and the air outlet 111 is formed in the body 100. The air supply channel is located at a channel section at the handle 120, and extends roughly along the axial direction of the handle 120. The body 100 also includes a driving device and a heating device. The driving device is, for example, a centrifugal fan or other types of fans. During its operation, the fan drives the air flow in the environment into the air supply channel through the air inlet 121. After circulating in the air supply channel and being heated by the heating device, the hot air is finally discharged to the outside through the air outlet 111.

[0081] Specifically, please combine Figures 2 to 4 , the filtering module provided by the present invention (for ease of understanding, the following Figures 1 to 7 The filter module shown is defined as a first filter module 200) including a filter element 210, the filter element 210 is provided with a dust guide portion 211 and an air inlet portion 212, the air inlet surface of the air inlet portion 212 is provided with a through hole, the dust guide portion 211 is concave relative to the air inlet portion 212, and the surface of the dust guide portion 211 is a smooth surface, the dust guide portion 211 is used to guide dust to one end of the filter element 210 to facilitate subsequent dust collection and cleaning.

[0082] Furthermore, the first filter module 200 also includes a dust collecting piece 220, wherein the filter element 210 is arranged at the air inlet 121 of the hair dryer 1, and the dust collecting piece 220 is provided with a dust collecting chamber, which is at least connected to the dust guiding part 211, so that when the airflow flows toward the air inlet side of the filter element 210, the impurities carried in the airflow are guided through the dust guiding part 211 to slide into the dust collecting chamber.

[0083] In the first filter module 200 provided by the present invention, when the driving device in the hair dryer 1 drives the airflow to flow toward the air outlet 111 through the air inlet 121, since the dust guide portion 211 of the filter element 210 has no through hole, the impurities carried in the airflow can be trapped in the dust guide portion 211, and since the surface of the dust guide portion 211 is set as a smooth surface, the smooth surface helps to reduce the friction resistance to the impurities, so that the impurities can slide along the extension direction of the dust guide portion 211 to the dust collecting chamber under the driving action of the driving device. In the embodiment of the present invention, the amount of impurities accumulated on the surface of the air inlet side of the filter element 210 is reduced, and the impurities are collected in the dust collecting chamber. In addition, since the air inlet portion 212 of the filter element 210 is provided with a through hole, sufficient ventilation of the filter element 210 can be ensured, and due to the provision of the through hole, the contact area between the air inlet portion 212 and the impurities is reduced, so that the impurities can slide along the first connecting surface 213 between the air inlet portion 212 and the dust guiding portion 211 into the dust guiding portion 211, and then be collected in the dust collecting chamber through the dust guiding portion 211. The present invention helps to reduce the amount of impurities accumulated on the filter element 210 as much as possible while ensuring sufficient ventilation, and collects the impurities in the dust collecting chamber uniformly. It is only necessary to uniformly clean the impurities in the dust collecting chamber, and there is no need for the user to manually remove the entire first filter module 200 for cleaning, which helps to simplify the overall cleaning operation of the first filter module 200 and helps to optimize the cleaning effect of the first filter module 200.

[0084] In view of the above, the air inlet 121 is arranged on the side wall of the handle 120 and is arranged along the circumference of the handle 120. When the air inlet 121 is arranged partially along the circumference of the handle 120, the filter 210 is suitable for the air inlet 121 to be in a sheet shape and is covered on the inside or outside of the air inlet 121; when the air inlet 121 is arranged around the entire circumference of the handle 120, the filter 210 is suitable for the air inlet 121 to be in a cylindrical shape and is sleeved on the inside or outside of the air inlet 121.

[0085] The airflow generally enters along the thickness direction of the filter element 210, that is, the thickness direction of the filter element 210 constitutes its own air intake direction. The air intake side of the filter element 210 is located outside the filter element 210, and its outer surface is partially or entirely configured to be concave-convex, including multiple dust guide portions 211 and multiple air intake portions 212.

[0086] Among them, the surface of the dust guide part 211 is a smooth surface. It can be understood that the smooth surface, that is, the surface with a friction coefficient at least lower than the friction coefficient of the filter screen assembly used in the hair dryer 1 in the prior art, can make the impurities carried in the airflow not accumulate at the collision point of the two after colliding with the dust guide part 211, but slide into the dust collecting chamber along the extension direction of the dust guide part 211. In order to obtain a smooth surface, in one embodiment, the surface of the dust guide part 211 can be subjected to a process such as polishing to reduce the surface friction coefficient as much as possible; or in another embodiment, a lubricating coating such as a suitable oil or graphite material can be applied to the surface of the dust guide part 211, so that the surface friction coefficient can be reduced by means of the lubricating effect of the lubricating coating.

[0087] The air inlet 212 is provided with through holes along the air inlet direction of the filter element 210, and a plurality of through holes are dispersedly arranged on the outer surface of the air inlet 212. By adjusting the total area of ​​the outer surface of each air inlet 212 and the total area of ​​the ventilation cross section of each through hole, the overall ventilation volume of the first filter module 200 can be adjusted accordingly, so that the first filter module 200 can collect impurities with the help of the dust guide 211 while meeting the required ventilation volume requirements with the help of the through holes on the air inlet 212.

[0088] The dust guide portion 211 is concave relative to the air inlet portion 212, and the air inlet portion 212 is convex relative to the dust guide portion. In practical applications, a plurality of air inlet portions 212 may be convexly provided on the air inlet side surface of the filter element 210, and a dust guide portion 211 is defined between every two adjacent air inlet portions 212; or conversely, a plurality of dust guide portions 211 may be concavely provided on the air inlet side surface of the filter element 210, and an air inlet portion 212 is defined between every two adjacent dust guide portions 211. Of course, the air inlet portion 212 may be convexly provided on the air inlet side surface of the filter element 210, and the dust guide portion 211 may be concavely provided, without limitation.

[0089] When a plurality of dust guide portions 211 and a plurality of air inlet portions 212 are provided respectively, the plurality of dust guide portions 211 and the plurality of air inlet portions 212 may be arranged in an alternating manner along the circumference of the handle 120 .

[0090] The radial cross-sectional shape of the air inlet 212 is not limited and can be specifically set according to actual needs. In one embodiment, the air inlet surface of the air inlet 212 is set as an outwardly convex arc surface, a platform surface, or a conical surface. That is, the radial cross-sectional shape of the air inlet 212 can be a fan-shaped, polygonal, or triangular shape with any curvature, which is convenient for forming a larger air inlet surface.

[0091] The air inlet 212 has a first connection surface 213 connected to the adjacent dust guide 211. In the air inlet direction of the filter element 210, at least the first connection surface 213 is inclined and extends in a direction gradually approaching the dust guide 211. It can be understood that since the air inlet 212 is provided with a through hole, the area of ​​the air inlet side surface of the air inlet 212 that can be used for impurities to accumulate is reduced, so that the impurities carried in the air flow are not easy to accumulate at the collision point of the two after colliding with the air inlet 212, and fall off from the air inlet 212. By setting the first connection surface 213 to extend in an inclined manner as described above, the impurities that collide with the air inlet 212 can be guided along the inclination of the first connection surface 213 and enter the dust guide 211 adjacent to the air inlet 212, and finally enter the dust collecting chamber along the extension direction of the dust guide 211, so as to achieve the purpose of dust collection.

[0092] Specifically, the first connecting surface 213 may be a straight surface that is arranged at an angle, and correspondingly, the radial cross-section of the air inlet portion 212 may be in the shape of a triangle, a trapezoid, or other polygons, for example.

[0093] Of course, the first connecting surface 213 may also be a curved surface, which may be a concave curved surface or a convex curved surface. Taking the convex curved surface as an example, the radial cross-sectional shape of the air inlet portion 212 is, for example, a semicircular or semi-elliptical shape with a flattened top. Figure 2 The outer convex surface of the air inlet 212 is arranged in an arc shape as a whole, that is, the outer convex surface of the air inlet 212 as a whole constitutes the above-mentioned first connecting surface 213. Correspondingly, the radial cross-sectional shape of the air inlet 212 is arranged to be a part of a fan or an ellipse, which helps to make the impurities carried in the airflow be guided into the adjacent dust guide portion 211 by the first connecting surface 213 arranged in an arc shape when colliding with any outer surface of the air inlet 212.

[0094] Similarly to the above, the radial cross-sectional shape of the dust guide portion 211 is not limited and can be specifically set according to actual needs. In one embodiment, the air inlet surface of the dust guide portion 211 is set as a concave arc surface, a platform surface, or a cone surface. That is, the radial cross-sectional shape of the dust guide portion 211 can be a fan-shaped, polygonal, or triangular shape of any curvature, which is convenient for forming a larger dust guide surface.

[0095] The dust guide portion 211 has a second connection surface connected to the adjacent air inlet portion 212, and in the air inlet direction of the filter element 210, at least the second connection surface is inclined and extends in a direction gradually approaching the air inlet portion 212. It can be understood that the above-mentioned arrangement of the second connection surface helps to expand the area of ​​the air inlet side surface of the dust guide portion 211 where impurities can be accumulated to a certain extent, so that the impurities carried in the airflow can slide down through the dust guide portion 211 after colliding with the dust guide portion 211.

[0096] Specifically, the second connecting surface may be a straight surface that is arranged at an angle, and correspondingly, the radial cross-sectional shape of the dust guiding portion 211 is, for example, a triangle, a trapezoid or other polygons.

[0097] Of course, the second connecting surface can also be an arc surface, which can be a concave arc surface or a convex arc surface. Taking the convex arc surface as an example, correspondingly, the radial cross-sectional shape of the dust guide portion 211 is, for example, a semicircular or semi-elliptical shape with a flat top. Or in a further scheme, the outer convex surface of the dust guide portion 211 is arranged in an arc shape as a whole, that is, the outer convex surface of the dust guide portion 211 as a whole constitutes the above-mentioned second connecting surface. Correspondingly, the radial cross-sectional shape of the dust guide portion 211 is set as a part of a fan or an ellipse, which helps to make the impurities carried in the airflow be guided by the second connecting surface arranged in an arc shape to slide down when colliding with any surface of the dust guide portion 211.

[0098] In view of the above, the dust guide portion 211 can be extended and arranged along any dimension direction of the surface of the air inlet side of the filter element 210. At least the dust collecting chamber of the dust collecting member 220 is located at any port of the dust guide portion 211, or at any position between the two ports of the dust guide portion 211. When the air inlet 121 is provided on the side wall of the handle 120 of the hair dryer 1 as described above, for ease of understanding, the first filter module 200 is defined as having an upstream end and a downstream end located in the air supply direction of the handle 120, and the air supply direction of the handle 120 is roughly the axial direction of the handle 120, and the downstream end of the first filter module 200 and its components such as the filter element 210 and the dust collecting member 220 are all arranged to be closer to the wind tube 110, and the upstream end of the first filter module 200 and its components such as the filter element 210 and the dust collecting member 220 are all arranged to be farther away from the wind tube 110.

[0099] Based on this, in one embodiment, the dust guide portion 211 extends longitudinally between the upstream end and the downstream end of the filter element 210. In this way, the longitudinal extension direction of the dust guide portion 211 can be substantially the same as the axial direction of the handle 120.

[0100] Further, the dust guiding portion 211 may be arranged to pass through the downstream end of the filter element 210. The dust collecting member 220 may be connected to any part of the dust guiding portion 211, for example, connected to any end of the dust guiding portion 211, or cover at least part of the dust guiding portion 211. In the following embodiments, at least the dust collecting chamber of the dust collecting member 220 is located at the downstream end of the filter element 210. In this way, no matter what state the hair dryer 1 is in, under the drive of the driving device, the airflow can be driven to move from the upstream end of the first filter module 200 to the downstream end of the first filter module 200, thereby driving the impurities on the dust guiding portion 211 to slide into the dust collecting chamber located at the downstream end.

[0101] In addition, based on any of the above embodiments, a plurality of dust guides 211 are arranged at intervals along the circumference of the handle 120, and an air inlet 212 is defined between every two adjacent dust guides 211. The dust guides 211 can be arranged at intervals along the entire circumference of the handle 120, or at intervals in a local area along the circumference of the handle 120.

[0102] Then in one embodiment, the dust collecting element 220 can be arranged extending along the arrangement direction of each dust guiding portion 211 and each air inlet portion 212, and the dust collecting element 220 can be arranged corresponding to the entire area of ​​the filter element 210 in this direction, or can also be arranged corresponding to a local area of ​​the filter element 210 in this direction.

[0103] Take the above-mentioned filter element 210 that surrounds the entire circumference of the handle 120 in a cylindrical shape as an example: each dust guide portion 211 and each air inlet portion 212 are arranged in sequence along the circumference of the handle 120. At this time, the dust collecting member 220 can be surrounded by the entire circumference of the handle 120 in a cylindrical shape, and is located at the downstream end of each of the dust guide portions 211. In this way, any dust guide portion 211 can be directly connected to the dust collecting chamber of the dust collecting member 220, so that impurities entering any dust guide portion 211 can be directly guided into the dust collecting chamber. Alternatively, the dust collecting member 220 extends along the circumference of the handle 120 in an arc shape of any desired curvature, for example, extending in a semicircular arc shape, so that it is convenient for the dust collecting member 220 to be directly disassembled and assembled from the outer wall of the handle 120.

[0104] Take the case where the dust collecting member 220 extends in an arc shape along the circumference of the handle 120 as an example:

[0105] In one embodiment, a receiving groove is recessed on the outer wall of the hair dryer 1, that is, the outer wall of the handle 120. Under normal working conditions, the dust collecting member 220 is received in the receiving groove, and when the dust collecting cavity of the dust collecting member 220 needs to be cleaned, the user can apply an external force to the dust collecting member 220, so that the dust collecting member 220 is driven by the external force to slide out of the receiving groove.

[0106] Further, the hair dryer 1 includes a third filter module 500 sleeved on the outside of the first filter module 200. The third filter module 500 is also a common metal mesh or air inlet grille, which can perform preliminary filtering on the airflow. The third filter module 500 can be integrally formed with the handle 120, or can be detachably connected to the handle 120, for example, by snap-on or magnetic attraction. Optionally, the aperture of the third filter module 500 is larger than that of the first filter module 200, so that preliminary filtering of the third filter module 500 and further filtering of the first filter module 200 can be achieved.

[0107] Based on the above, in one embodiment, the third filter module 500 is partially recessed at the downstream end of each dust guide portion 211 to form the above-mentioned receiving groove, and the dust collecting part 220 can be received in the receiving groove as described above, and can be slid out of the receiving groove under the drive of an external force. In this way, the receiving groove is only provided on the third filter module 500, and there is no need to make any changes to the structure of the handle 120. After the third filter module 500 and the dust collecting part 220 are spliced ​​together to form a complete cylindrical structure, the cylindrical structure is adapted to be detachably connected to the handle 120.

[0108] Alternatively, in one embodiment, the dust collecting member 220 is contained in a receiving groove formed by the outer wall of the hair dryer 1 and the outer wall of the third filter module 500, and can be slid out of the receiving groove under the driving of an external force. That is, the receiving groove is defined by the third filter module 500 and the adjacent part of the handle 120, and sufficient space can be reserved for the receiving groove, that is, the volume of the dust collecting cavity of the dust collecting member 220 can be designed to be larger, so that more impurities can be contained.

[0109] In addition, when the dust collecting piece 220 extends in an arc shape along the circumference of the handle 120 as described above, the area where the dust collecting chamber of the dust collecting piece 220 extends may only face the downstream end of a portion of the dust guiding portion 211 (for ease of understanding, this portion of the dust guiding portion 211 is defined as the first dust guiding portion hereinafter), and the downstream end of the remaining portion of the dust guiding portion 211 (for ease of understanding, this portion of the dust guiding portion 211 is defined as the second dust guiding portion hereinafter) does not face the dust collecting chamber.

[0110] To this end, in one embodiment, when the third filter module 500 alone or together with the handle 120 defines a receiving groove as described above, that is, the dust collecting member 220 is arranged in a local area corresponding to the filter member 210 (that is, the arrangement area of ​​the first dust guide portion), at this time, the third filter module 500 may be provided with a guide groove at the remaining area corresponding to the filter member 210 (that is, the arrangement area of ​​the second dust guide portion), and the guide groove communicates with the dust collecting chamber and the second dust guide portion at the corresponding area to guide the impurities of the second dust guide portion into the dust collecting chamber. The guide groove may be arranged at the downstream end of the second dust guide portion, and when the dust collecting member 220 is accommodated in the receiving groove, the guide groove is arranged in communication with the dust collecting chamber of the dust collecting member 220, and the impurities that slide into the guide groove from the second dust guide portion can be guided into the dust collecting chamber by, for example, tilting the guide groove, introducing external airflow into the guide groove, etc., so as to achieve the overall collection of impurities at all dust guide portions 211.

[0111] Or in another embodiment, the second dust guide portion may be arranged to extend obliquely in a direction close to the dust collecting chamber as a whole or in part from its upstream end to its downstream end. The second dust guide portion is arranged to extend obliquely in a direction close to the dust collecting chamber as a whole, that is, the second dust guide portion is extended spirally around the handle 120 as a whole from its upstream end to its downstream end. The second dust guide portion is arranged to extend obliquely in a direction close to the dust collecting chamber as a part, that is, the partial section of the second dust guide portion close to the upstream end may be extended in any suitable manner, for example, extending straightly along the axial direction of the handle 120; and the partial section of the second dust guide portion close to the downstream end is arranged to extend spirally around the handle 120 to form a guide section, which can better guide the impurities at the second dust guide portion into the dust collecting chamber.

[0112] In addition, based on the above embodiments, it can be understood that when the dust collecting part 220 is arranged on the body 100 all around, that is, it is arranged along the entire circumference of the handle 120 in a cylindrical shape, the dust collecting part 220 can be disassembled in a manner that, for example, the first filter module 200, the third filter module 500 and other structures are first removed, and then the dust collecting part 220 is removed to clean the impurities stored in the dust collecting part 220. Alternatively, the dust collecting part 220 can also be disassembled in a manner that a hole-like structure is provided on the outer wall of the dust collecting part 220, and a cover body is provided to match the hole-like structure, and the cover body is movably mounted on the dust collecting part 200, and the hole-like structure can be movably opened and closed. When the cover body movably opens the hole-like structure, the impurities stored in the dust collecting part 220 can be cleaned. Alternatively, the dust collecting piece 220 may be disassembled in the following manner: the dust collecting piece 220 includes a plurality of arc segments, and the plurality of arc segments are together enclosed and spliced ​​to form a cylindrical dust collecting piece 220. In this way, any arc segment can be directly slid out of the receiving groove provided in the outer wall of the hair dryer 1 to achieve cleaning of impurities stored in the dust collecting piece 220.

[0113] Based on any of the above embodiments, please combine Figure 5The dust collecting member 220 includes a plate-shaped body and a downstream stop arm 224 extending laterally from the downstream end of the plate-shaped body. The downstream stop arm 224 is used to abut against the side convex step 122 of the handle 120. The plate-shaped body, the downstream stop arm 224 and the corresponding side wall of the handle 120 jointly enclose and define the dust collecting chamber. In this way, it is helpful to simplify the structure of the dust collecting member 220. With the installation and fixation between the dust collecting member 220 and the handle 120, the dust collecting chamber is jointly enclosed and defined. In the limited space of the dust collecting member 220, the volume setting of the dust collecting chamber is increased as much as possible, so that the dust collecting member 220 can collect more impurities. In addition, through the above-mentioned arrangement, the dust collecting piece 220 can be axially limited between the bottom wall of the downstream stop arm 224 and the side protruding step 122 of the handle 120, and radially limited between the end wall of the free end of the downstream stop arm 224 and the side wall of the handle 120, which helps to firmly install the dust collecting piece 220 on the side wall of the handle 120 and makes it easier to disassemble and assemble the dust collecting piece 220 and facilitate the user to centrally process the impurities in the dust collecting chamber after removing the dust collecting piece 220.

[0114] Since the mass of impurities is generally light and there is a certain amount of static adsorption between the impurities and the wall of the dust collecting chamber, it can be ensured that the impurities entering the dust collecting chamber remain contained in the dust collecting chamber. However, further, in one embodiment, the dust collecting member 220 also includes an upstream blocking arm 223 extending laterally from the upstream end of the plate-like body, and the dust collecting chamber passes through the upstream blocking arm 223 until it is connected to the dust guiding portion 211. The provision of the upstream blocking arm 223 can play a certain stopping role, effectively preventing the impurities entering the dust collecting chamber from escaping from the dust collecting chamber under the drive of gravity. The free end of the upstream barrier arm 223 can be arranged to maintain a certain distance from the side wall of the handle 120, so as to realize the connection between the dust collecting chamber and the dust guiding part 211; or, the free end of the upstream barrier arm 223 is arranged to abut against the side wall of the handle 120, so as to further increase the radial limiting effect between the dust collecting part 220 and the handle 120, and an avoidance through hole is penetrated at the upstream barrier arm 223, so as to realize the connection between the dust collecting chamber and the dust guiding part 211 through the avoidance through hole.

[0115] In view of the above, in one embodiment, at least part of the dust collecting member 220 is exposed on the outer wall of the hair dryer 1, for example Figure 1As shown, the dust collecting piece 220 can be set to be slidably connected to the side wall of the handle 120 like any drawer, or fixed to the side wall of the handle 120 by a snap-on structure; or fixed to the side wall of the handle 120 by magnetic attraction through a magnetic structure, so that the user can manually complete the disassembly, assembly and replacement operation of the dust collecting piece 220 from the handle 120. The exposed portion corresponds to the dust collecting chamber setting, and at least the exposed portion is made of transparent material to visualize the dust collecting chamber. In this way, even if the dust collecting piece 220 remains installed on the handle 120, the user can still observe the dust collection situation in the dust collecting chamber through the transparent setting, so that when the impurity reserves in the dust collecting chamber are large, the dust collecting piece 220 can be removed and the impurities in the dust collecting chamber can be centrally processed.

[0116] Based on any of the above embodiments, in a further solution, the dust collecting cavity includes one or more dust collecting chambers. Each dust collecting chamber can be used to collect the same type of impurities, or is configured to collect different types of impurities.

[0117] Please combine the specific Figure 6 to Figure 7 In one embodiment, the dust collecting chamber includes a first dust collecting chamber 221 and a second dust collecting chamber 222, wherein the first dust collecting chamber 221 is connected to the dust guiding portion 211, and the second dust collecting chamber 222 is connected to the first dust collecting chamber 221, and a screening structure 230 is provided at the connecting portion between the first dust collecting chamber 221 and the second dust collecting chamber 222, wherein the screening structure 230 is used to retain large-sized impurities at the dust guiding portion 211 in the first dust collecting chamber 221, and to transport small-sized impurities at the dust guiding portion 211 to the second dust collecting chamber 222. By screening the impurity size by the screening structure 230, large-sized impurities such as hair and cotton fabrics can be retained in the first dust collecting chamber 221, and small-sized impurities such as dust can enter the second dust collecting chamber 222 after passing through the screening structure 230. The screening structure 230 is, for example, various mesh third filter modules, layered structures such as activated carbon, or gauze structures. In this way, impurities can be collected in the first dust collecting chamber 221 and the second dust collecting chamber 222 in an orderly and classified manner, which helps to increase the storage capacity of impurities in the dust collecting chamber within a limited space and facilitates the subsequent targeted processing of impurities of different sizes.

[0118] The arrangement of the first dust collecting chamber 221 and the second dust collecting chamber 222 is not limited. In one embodiment, please combine Figure 6The first dust collecting chamber 221 and the second dust collecting chamber 222 can be arranged side by side along the circumference of the handle 120. The second dust collecting chamber 222 is directly opposite to the dust guiding portion 211, and a screening structure 230 is arranged between the second dust collecting chamber 222 and the dust guiding portion 211. The screening structure screens the impurities sliding down from the dust guiding portion 211, so that small-sized impurities pass through and enter the second dust collecting chamber 222; the first dust collecting chamber 221 and the second dust collecting chamber 222 are arranged side by side, and the opening of the first dust collecting chamber 221 is arranged adjacent to the screening structure 230, so that large-sized impurities trapped on the screening structure 230 can enter the first dust collecting chamber 221. Of course, there is no limitation on the way that the large-sized impurities trapped on the screening structure 230 enter the first dust collecting chamber 221. The large-sized impurities can be moved sideways by means of the airflow flowing through the body 100, or the screening structure 230 can be tilted so that the screening structure 230 gradually tilts toward the first dust collecting chamber 221, and the large-sized impurities trapped on the screening structure 230 are guided to fall into the first dust collecting chamber 221 by the inclined surface.

[0119] Or in one embodiment, please combine Figure 7 The first dust collecting chamber 221 and the second dust collecting chamber 222 can be arranged in sequence along the axial direction of the handle 120. The first dust collecting chamber 221 is directly opposite to the dust guiding portion 211, and a screening structure 230 is arranged between the first dust collecting chamber 221 and the second dust collecting chamber 222, so that the impurities entering the first dust collecting chamber 221 are intercepted by the screening structure 230, and the large-sized impurities are retained in the first dust collecting chamber 221, and the small-sized impurities are further dropped into the second dust collecting chamber 222.

[0120] Of course, you can also refer to Figure 6 The arrangement of the first dust collecting chamber 221 and the second dust collecting chamber 222 is shown in that the first dust collecting chamber 221 and the second dust collecting chamber 222 are arranged side by side along the radial direction of the handle 120, which will not be described in detail.

[0121] Furthermore, the first filtering module 200 further includes an alarm module, a sensor module and a control module. The sensor module is disposed in the dust collecting chamber, and triggers a sensing signal when the amount of dust collected in the dust collecting chamber reaches a preset threshold value; the control module is electrically connected to the alarm module and the sensor module, respectively, so as to control the alarm module to issue an alarm prompt when receiving the sensing signal.

[0122] In one embodiment, when the number of dust collecting chambers is set to at least two, the sensing module triggers a sensing signal associated with the dust collecting chamber when the amount of dust collected in any of the dust collecting chambers reaches a corresponding preset threshold; and the control module controls the alarm module to issue an alarm prompt when receiving the sensing signal associated with any of the dust collecting chambers.

[0123] Taking the above-mentioned dust collecting chamber including the first dust collecting chamber 221 and the second dust collecting chamber 222 as an example, the sensing module is used to trigger a first sensing signal when sensing that the reserve of large-sized impurities in the first dust collecting chamber 221 reaches a first preset threshold, and trigger a second sensing signal when sensing that the reserve of small-sized impurities in the second dust collecting chamber 222 reaches a second preset threshold; the control module is electrically connected to the alarm module and the sensing module respectively, so as to control the alarm module to issue an alarm prompt when receiving the first sensing signal or the second sensing signal. The first preset threshold and the second preset threshold can be pre-set according to actual needs. After collecting large-sized impurities into the first dust collecting chamber 221 and collecting small-sized impurities into the second dust collecting chamber 222, the detection accuracy of the impurity reserve in the dust collecting chamber can be improved by sensing the reserve of impurities in the first dust collecting chamber 221 and the second dust collecting chamber 222 respectively. When the impurity reserves in the first dust collecting chamber 221 or the second dust collecting chamber 222 are abnormal, the control module can correspondingly control the alarm module to take the same or different methods to give an alarm prompt, so that the user can clean the impurities in the dust collecting chamber in time when receiving the alarm prompt.

[0124] In view of the above, in actual application, the sensing signals associated with each dust collecting chamber are set differently, that is, the first sensing signal and the second sensing signal can be set differently, so that the first sensing signal and the second sensing signal can be easily distinguished and identified.

[0125] To achieve the above purpose, please combine Figure 6 to Figure 7In one embodiment, the sensing module includes a photoelectric sensor. The photoelectric sensor includes a photoelectric emitting unit 241 and a photoelectric receiving unit 242. The photoelectric emitting unit 241 and the photoelectric receiving unit 242 are respectively arranged on the opposite side walls of the dust collecting chamber. When the photoelectric emitting unit 241 emits a photoelectric signal and the photoelectric receiving unit 242 does not receive the photoelectric signal, the photoelectric sensor triggers the first sensing signal. The photoelectric emitting unit 241 and the photoelectric receiving unit 242 are arranged in pairs. The arrangement positions of the photoelectric emitting unit 241 and the photoelectric receiving unit 242 in the dust collecting chamber basically determine the approximate range of the first preset threshold value. When the photoelectric emitting unit 241 and the photoelectric receiving unit 242 are arranged at a higher position in the dust collecting chamber, the first preset threshold value is set to be larger, so that more large-sized impurities can be stored; conversely, when the photoelectric emitting unit 241 and the photoelectric receiving unit 242 are arranged at a lower position in the dust collecting chamber, the first preset threshold value is set to be smaller, so that less large-sized impurities can be stored. When the photoelectric emitting unit 241 emits a photoelectric signal, if the photoelectric receiving unit 242 can receive the photoelectric signal in time, it proves that there is no impurity obstruction between the photoelectric emitting unit 241 and the photoelectric receiving unit 242, that is, the large-sized impurities stored in the dust collecting chamber have not reached the first preset threshold, and the first sensing signal has not been triggered, and no cleaning is required; on the contrary, if the photoelectric receiving unit 242 cannot receive the photoelectric signal in time, it proves that there is impurity obstruction between the photoelectric emitting unit 241 and the photoelectric receiving unit 242, that is, the large-sized impurities stored in the dust collecting chamber have reached or even exceeded the first preset threshold, triggering the first sensing signal, and timely cleaning is required.

[0126] In one embodiment, the sensing module includes a photosensitive sensor 250. The photosensitive sensor 250 is disposed in the second dust collecting chamber 222, and the photosensitive sensor 250 triggers the second sensing signal when its resistance value is greater than a resistance threshold. The photosensitive sensor 250 is generally disposed at the bottom of the dust collecting chamber. When the amount of small-sized impurities in the dust collecting chamber is small, the thickness of the layer of small-sized impurities in the dust collecting chamber is small, the degree of shielding to the photosensitive sensor 250 is relatively low, the resistance value of the light surface sensor is relatively small, the second sensing signal is not triggered, and no cleaning is required; and when the amount of small-sized impurities in the dust collecting chamber is large, the thickness of the layer of small-sized impurities in the dust collecting chamber is large, the degree of shielding to the photosensitive sensor 250 is relatively high, the resistance value of the photosensitive sensor 250 is relatively large, the second sensing signal is triggered, and cleaning is required in time.

[0127] When there are at least two dust collecting chambers as described above, and at least two sensor modules are provided in a one-to-one correspondence with each dust collecting chamber, each of the sensor modules can be configured to be different from each other. For example, when the dust collecting chamber includes a first dust collecting chamber 221 and a second dust collecting chamber 222, a photoelectric sensor can be provided in the first dust collecting chamber 221, and a light-sensitive sensor 250 can be provided in the second dust collecting chamber 222.

[0128] Alternatively, when there are at least two dust collecting chambers as described above, and at least two sensor modules are provided in a one-to-one correspondence with each dust collecting chamber, each of the sensor modules may be configured to be identical to each other. For example, when the dust collecting chamber includes a first dust collecting chamber 221 and a second dust collecting chamber 222, a photoelectric sensor may be provided in both the first dust collecting chamber 221 and the second dust collecting chamber 222, or a photosensitive sensor 250 may be provided in both the first dust collecting chamber 221 and the second dust collecting chamber 222.

[0129] The specific scheme of the alarm module is not limited, and it can be, for example, an indicator light, and different alarm prompts can be achieved by different colors, flashing frequencies, etc. of the indicator light. The alarm module can also be, for example, a buzzer, and different alarm prompts can be achieved by different timbres, tones, frequency bands, etc. of the buzzer. Of course, the alarm module can also be, for example, a text logo prompt, and different texts can be displayed on a display screen provided on the hair dryer 1 or on a mobile terminal wirelessly connected to the control component of the hair dryer 1 to achieve different alarm prompts, etc., and they are not listed one by one.

[0130] In view of the above, in the present design, when there are multiple dust collecting chambers, the alarm signals associated with the dust collecting chambers are set differently. That is, when the control module receives the sensing signals triggered at different dust collecting chambers, the control alarm module sends out the alarm signals corresponding to the dust collecting chamber / the sensing signals, so that when the user hears the alarm signal, he can distinguish which dust collecting chamber has an abnormal dust amount according to the difference of the alarm signals.

[0131] When the dust collecting member 220 is at least partially made of a transparent material as described above, the second dust collecting chamber 222 can be illuminated by ambient light to achieve cooperation with the photosensitive sensor 250. Alternatively, in one embodiment, the photosensitive sensor 250 is disposed at the bottom of the second dust collecting chamber 222, and the sensor module further includes a lighting component 260, which is disposed in the second dust collecting chamber 222 to illuminate the second dust collecting chamber 222. The lighting component 260 is, for example, an LED lamp bead or a lamp post, etc., without limitation.

[0132] Based on any of the above embodiments, the present invention further provides a hair dryer 1, which includes the above-mentioned first filter module 200. It should be noted that the detailed structure of the first filter module 200 in the hair dryer 1 can refer to the above-mentioned embodiment of the first filter module 200, which will not be repeated here; since the above-mentioned first filter module 200 is used in the hair dryer 1 of the present application, the embodiment of the hair dryer 1 of the present application includes all technical solutions of all embodiments of the above-mentioned first filter module 200, and the technical effects achieved are also exactly the same, which will not be repeated here.

[0133] Furthermore, the hair dryer 1 may further include a third filter module 500, which is disposed on the air inlet side of the first filter module 200 and is spaced apart from the air inlet side of the first filter module 200, the space being spaced apart to allow for the air inlet portion 212 to be disposed. The third filter module 500 is fixed relative to the handle 120, i.e., a common metal mesh, to achieve preliminary filtering of the airflow.

[0134] Based on any of the above embodiments, the present invention also provides a filter module (not shown in the drawings), the filter module includes a filter element, the filter element is used to be arranged at the air inlet 121 of the hair dryer 1, the filter element is provided with a dust guide portion and an air inlet portion (in order to distinguish from the above-mentioned dust guide portion and air inlet portion, in the following embodiments, the dust guide portion in this embodiment is defined as a third dust guide portion, and the air inlet portion in this embodiment is defined as a second air inlet portion), a through hole is provided on the air inlet surface of the second air inlet portion, the third dust guide portion is concave relative to the second air inlet portion, and the surface of the third dust guide portion is a smooth surface, and the third dust guide portion is located at one end of the filter element for collecting dust.

[0135] It can be understood that the filter element can be a conventional structure for filtering incoming air, such as the above-mentioned filter screen, metal mesh, or wire mesh assembly. The filter element is roughly cylindrical, and the through holes of the second air inlet portion can be dispersed on any peripheral side wall of the cylindrical structure of the filter element. The third dust guide portion is close to the end of the filter element, and specifically can be the above-mentioned downstream end. The inner surface of the third dust guide portion is a smooth surface, and the smooth surface helps to reduce the friction resistance to impurities, so that the impurities can slide along the extension direction of the third dust guide portion under the driving action of the driving device, so as to achieve the purpose of collecting impurities.

[0136] Also, see Figures 8 to 16 The present invention also provides a filtering device, which is also applied to the hair dryer 1.

[0137] Please refer to Figures 8 to 9 The filter device includes a filter assembly and an interference member 400. The filter assembly is used to be arranged at the air inlet 121 of the hair dryer 1; the interference member 400 is arranged on the air inlet side of the filter assembly, the interference member 400 is located at one end edge of the filter assembly, and has an interference stroke that moves toward the other end edge of the filter assembly under the drive of an external force, and when performing the interference stroke, the interference member 400 acts on the filter assembly to separate the impurities accumulated on the air inlet side of the filter assembly from the filter assembly.

[0138] In the filtering device provided by the present invention, the filter assembly is arranged at the air inlet 121 of the hair dryer 1, and the initial position of the interference member 400 is located at one end edge of the filter assembly, thereby reducing the obstruction of the filter assembly, ensuring that the filter assembly has sufficient ventilation volume, and realizing the filtering effect of the filter assembly on the airflow entering the hair dryer 1, and intercepting impurities in the airflow on the air inlet side of the filter assembly; when the external force drives the interference member 400 to perform the interference stroke, the interference member 400 will move from its initial position to the other end edge of the filter assembly, passing through the air inlet side of the entire filter assembly, and generating mutual interference with the impurities accumulated on the air inlet side of the filter assembly. The interference causes the impurities to detach from the air inlet side of the filter assembly, thereby realizing the cleaning of the filter assembly without the need to remove the filter assembly, which helps to simplify the cleaning operation.

[0139] Similar to the above, the filter assembly generally includes one or more filter modules.

[0140] In one embodiment, the filter assembly includes a second filter module 300 , and the interference member 400 is disposed on the air inlet side of the second filter module 300 . When performing the interference stroke, the interference member 400 is separated from impurities accumulated on the air inlet side of the second filter module 300 .

[0141] It should be noted that the second filter module 300 can be directly configured to include the first filter module 200 described above, that is, to include the filter element 210 and the dust collecting element 220. Of course, the second filter module 300 can also be other filter structures that are different from the first filter module 200 described above, such as a filter screen assembly commonly used in the prior art.

[0142] The initial position of the interference member 400 can be located at one end edge of the second filter module 300 in any dimension direction, and the completed position of the interference member 400 after completing the interference stroke is arranged relative to the initial position in the dimension direction, so that when the interference member 400 performs the interference stroke, it can pass through the entire second filter module 300. Specifically, in order to reduce the obstruction of the air inlet 121 by the interference member 400 during the operation of the hair dryer 1, in one embodiment, when the air inlet 121 is provided on the side wall of the handle 120 of the hair dryer 1, and the second filter module 300 has an upstream end and a downstream end located in the air supply direction of the handle 120 (that is, equivalent to the axial direction of the handle 120), one of the upstream end and the downstream end of the second filter module 300 constitutes the initial position of the interference member 400, and the other constitutes the completed position of the interference member 400.

[0143] Of course, in some other embodiments, taking the above-mentioned air inlet 121 on the side wall of the handle 120 as an example, the initial position of the interference member 400 can also be set along the axial surface of the second filter module 300, that is, the extension direction of the interference member 400 is consistent with the flow direction of the fluid inside the handle 120, and it abuts or interferes with the air inlet side of the second filter module 300, so that the interference stroke is actually the circumferential movement of the interference member 400 along the second filter module 300. Furthermore, the shape of the interference member 400 can be an arc structure, and the concave direction of the arc structure is toward the end of the handle 120 (that is, the direction of impurity discharge), and at the same time, the running direction of the interference stroke is consistent with the concave direction, so that during the interference stroke, the concave surface of the interference member 400 can collect impurities and gather in the dust discharge direction until they are discharged from the inside of the handle 120, thereby improving the dust removal effect.

[0144] When the second filter module 300 is configured to include the first filter module 200 as described above, in a further solution, the dust collecting chamber is located at the downstream end of the filter element 210, and the upstream end of the dust collecting chamber is open, and the interference element 400 is located in the dust collecting chamber and can move outward from the dust collecting chamber to perform the interference stroke. In this way, the interference element 400 can simultaneously clean out the impurities collected in the dust collecting chamber, further simplifying the cleaning effect of the impurities in the dust collecting chamber.

[0145] In some other embodiments, the air inlet 121 can also be set at the rear end of the body 100 of the hair dryer 1, so that the interference member 400 can be set at the rear end of the body 100 of the hair dryer 1, and at least two layers of filter nets (i.e., the second filter module 300 and the third filter module 500) are set at the rear end of the body 100, and the interference member 400 is set between the two layers of filter nets. The interference stroke can be a surface movement on the end, and the specific setting method is not limited in the embodiments of this specification.

[0146] See also Fig. 9 and Fig.13In one embodiment, the filter device further comprises a third filter module 500, which is arranged at the air inlet side of the second filter module 300 and is spaced apart from the second filter module 300; the interference member 400 is arranged at the space between the second filter module 300 and the third filter module 500, and when performing the interference stroke, the interference member 400 also acts on the third filter module 500 to separate the impurities accumulated on the air outlet side of the third filter module 500 from the third filter module 500. The third filter module 500 is fixed relative to the handle 120, that is, a common metal mesh or air inlet grille, and can perform preliminary filtering on the airflow. The third filter module 500 can be integrally formed with the handle 120, or can be detachably connected to the handle 120, such as by snapping or magnetic attraction. Optionally, the aperture of the third filter module 500 is larger than that of the second filter module 300, so that preliminary filtering of the third filter module 500 and further filtering of the second filter module 300 can be achieved. Since the interference member 400 is arranged between the third filter module 500 and the second filter module 300, when impurities are easily accumulated on the air outlet side of the third filter module 500 during use, the interference member 400 can be used to simultaneously clean the impurities on the air outlet side of the third filter module 500 and the air inlet side of the second filter module 300.

[0147] In one embodiment, the interference member 400 is fixed to one end of the air outlet side of the third filter module 500. As the third filter module 500 moves relative to the second filter module 300, the interference member 400 acts on the second filter module 300 to remove impurities accumulated on the air inlet side of the second filter module 300. In this way, the interference member 400 is a part of the third filter module 500, and is a cleaning member formed by extending the end of the air outlet side of the third filter module 500 toward the second filter module 300. When the user operates the third filter module 500, for example, when removing the third filter module 500, the interference member 400 can be driven at the same time, and the interference member 400 slides against the air inlet side of the second filter module 300 to achieve a cleaning effect. In this way, the structural integration of the filter device can be improved, the convenience of disassembly and assembly can be improved, and the dust cleaning effect can also be ensured.

[0148] In addition, in one embodiment, the filter device further comprises an operating component, which cooperates with the filter assembly and / or the interference member 400 under external force to form an interference stroke of the interference member. The operating component is at least partially exposed outside the body 100 or at least forms an exposed state that is convenient for the user to operate, so as to facilitate the user to manually control the activity of the operating component and apply external force to the operating component.

[0149] Specifically, in one embodiment, the operating component includes at least one sliding protrusion 410, and a sliding groove 510 is provided on the filter assembly. The sliding protrusion 410 is fixed on the interference member 400, and the sliding protrusion 410 extends out of the filter assembly through the sliding groove 510, so that the user drives the sliding protrusion 410 to slide along the length direction of the sliding groove 510 to form the interference stroke.

[0150] Among them, the protrusion 410 extending out of the filter component can be understood as the part where the protrusion 410 extends out can enable the user to operate, that is, the part where the protrusion 410 extends out can also be flush with the outer surface of the slide groove 510. Since the interference member 400 is a smaller component, the user can use fingers or nails to drive the protrusion 410 to move so that the interference member 410 can be cleaned. Moreover, the protrusion 410 does not extend out of the outer surface of the slide groove 510, so that the overall outer surface of the hair dryer 1 can be consistent, avoiding the appearance of "bumps" that affect the appearance and user experience, and also avoiding user misoperation.

[0151] Specifically, when the filter assembly includes the second filter module 300 and the third filter module 500 as described above, and the third filter module 500 is arranged on the air inlet side of the back of the second filter module 300 and is spaced from the second filter module 300, the third filter module 500 is provided with a slide groove 510 along its air inlet direction, and the slide groove 510 is extended and arranged along the activity direction of the interference member 400 when performing the interference stroke, and the interference member 400 is correspondingly provided with a sliding protrusion 410, and the sliding protrusion 410 is slidably connected and matched with the slide groove 510, and extends from the slide groove 510 to the air inlet side of the third filter module 500. In this way, the sliding connection and matching of the sliding protrusion 410 and the slide groove 510 can not only accurately guide the activity path of the interference member 400 to prevent the interference member 400 from being offset relative to the second filter module 300, but also facilitate the user to hold the part of the slide protrusion 410 extending outward from the slide groove 510, so as to apply an external force driving the interference member 400 to perform the interference stroke.

[0152] There can be two sliding protrusions 410, which are correspondingly arranged at the two ends of the interference member 400 (such as the two ends of the diameter). In this way, the cleaning efficiency can be improved by operating the two relatively arranged sliding protrusions 410, and the interference stroke can be prevented from being blocked due to uneven force on the interference member.

[0153] The interference member 400 may interfere with the second filter module 300 and / or the third filter module 500 in various ways:

[0154] In one embodiment, it can be arranged that when the interference stroke is performed, the interference member 400 maintains sliding contact with the second filter module 300 and / or the third filter module 500. In this way, the impurities on the second filter module 300 and / or the third filter module 500 are separated by the sliding contact force between the interference member 400 and the second filter module 300 and / or the third filter module 500.

[0155] Specifically, the sliding contact between the interference member 400 and the second filter module 300 and / or the third filter module 500 can be a surface contact. At this time, the interference member 400 is equivalent to a scraper, and can scrape off the impurities on the second filter module 300 and / or the third filter module 500 by sliding contact with the second filter module 300 and / or the third filter module 500. Alternatively, the sliding contact between the interference member 400 and the second filter module 300 and / or the third filter module 500 can be a point contact or a line contact. At this time, the interference member 400 can be set to a comb structure or a brush structure to comb or brush off the impurities on the second filter module 300 and / or the third filter module 500.

[0156] Alternatively, in one embodiment, it may be arranged that when the interference stroke is performed, the interference member 400 maintains a distance from the second filter module 300 and / or the third filter module 500, and the interference member 400 is provided with an air hole on the side facing the second filter module 300 and / or the third filter module 500, and the interference member 400 may form a negative pressure at the air hole to suck away impurities on the second filter module 300 and / or the third filter module 500; or the interference member 400 may form a positive pressure at the air hole to blow away impurities on the second filter module 300 and / or the third filter module 500.

[0157] Based on any of the above examples, see Figure 11 to Figure 12 In one embodiment, the filter device further comprises an elastic member 600, one end of which is fixed relative to the second filter module 300, and the other end is connected to the interference member 400, so that when the external force driving is cancelled, the elastic member 600 drives the interference member 400 to reset. The elastic member 600 can be, for example, a spring, a rubber band, etc. The elastic member 600 can be provided as one, or two or more elastic members 600 can be arranged at intervals along the circumference of the handle 120, so that the interference member 400 can be subjected to multi-point force application, which helps the interference member 400 to reset to the initial position more smoothly and quickly.

[0158] In addition, based on any of the above embodiments, the present invention further provides a hair dryer 1, which includes the filtering device described above. It should be noted that the detailed structure of the filtering device in the hair dryer 1 can refer to the embodiment of the above filtering device, which will not be repeated here; since the above filtering device is used in the hair dryer 1 of the present application, the embodiment of the hair dryer 1 of the present application includes all technical solutions of all embodiments of the above filtering device, and the technical effects achieved are also exactly the same, which will not be repeated here.

[0159] Next, see Fig. 9 In one embodiment, the air inlet 121 is arranged around the circumference of the handle 120, and the second filter module 300 is adapted to be arranged in a cylindrical shape with a downstream tube opening arranged close to the air cylinder 110 and an upstream tube opening arranged far from the air cylinder 110; the body 100 further includes a bottom cover 700, and the bottom cover 700 is arranged at the upstream tube opening. The arrangement of the bottom cover 700 can cover the upstream tube opening of the second filter module 300, which helps to stably install the second filter module 300 on the handle 120.

[0160] Furthermore, please combine Fig.14 and Fig.15 In one embodiment, the bottom cover 700 is detachably connected to the handle 120 so as to be able to open and close the upstream port, and when the upstream port is opened, impurities separated from the second filter module 300 are discharged outward through the upstream port. The detachable connection between the bottom cover 700 and the handle 120 is not limited, for example Fig.14 As shown, a rotation guide structure 710 may be provided on the bottom cover 700, and a rotation matching structure may be provided at a corresponding portion of the handle 120, and the bottom cover 700 may be screwed in and out of the handle 120 through the cooperation connection between the rotation guide structure 710 and the rotation matching structure; or for example Fig.15 As shown, a magnetic attraction structure 720 may be provided on one of the bottom cover 700 and the handle 120, and a magnetic matching structure including iron, cobalt and nickel may be provided on the other. The bottom cover 700 may be opened and closed relative to the upstream barrel opening by magnetic attraction and release of the magnetic attraction structure 720 and the magnetic matching structure. Of course, a buckle structure may be provided on one of the bottom cover 700 and the handle 120, and a buckle hole structure may be provided on the other. The bottom cover 700 may be opened and closed relative to the upstream barrel opening by buckling and releasing of the buckle structure and the buckle hole structure, etc., which will not be described one by one.

[0161] Furthermore, in one embodiment, the bottom cover 700 is provided with a groove corresponding to the interference member 400, and the groove is used to receive impurities detached from the second filter module 300. When the interference member 400 detaches impurities from the second filter module 300 and / or the third filter module 500, the detached impurities can be temporarily received in the groove, and the bottom cover 700 does not need to be removed every time.

[0162] Of course, please combine Fig.16 In one embodiment, the bottom cover 700 is fixedly connected to the handle 120, and a dust outlet 730 is provided on the bottom cover 700 corresponding to the interference member 400, so that the impurities separated from the second filter module 300 can be discharged outward through the dust outlet 730. In this way, the impurities separated from the interference member 400 can be discharged out of the hair dryer 1 without operating the opening and closing between the bottom cover 700 and the upstream tube port. The fixing method between the bottom cover 700 and the handle 120 is not limited, and can be, for example, hot pressing fixing, ultrasonic fixing, or a detachable connection as described above.

[0163] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, ordinary technicians in this field can make other different forms of changes or modifications without creative work, which should fall within the scope of protection of the present invention.

Claims

1. A filtering module, characterized in that: include: A filter element is used to be arranged at the air inlet of a hair dryer. The filter element is provided with a dust guide portion and an air inlet portion. The air inlet surface of the air inlet portion is provided with a through hole. The dust guide portion is concave relative to the air inlet portion, and the surface of the dust guide portion is a smooth surface. The dust guide portion is used to guide dust to one end of the filter element.

2. The filter module according to claim 1, characterized in that: It also includes a dust collecting piece, which is provided with a dust collecting cavity. The dust collecting piece is connected to the filter element so that when the airflow flows through the filter element, impurities carried in the airflow are guided into the dust collecting cavity through the dust guiding part.

3. The filter module according to claim 1 or 2, characterized in that: The dust guiding parts and the air inlet parts are arranged in a plurality in sequence and alternately.

4. The filter module according to claim 1 or 2, characterized in that: The air inlet portion has a first connecting surface connected to the adjacent dust guide portion. In the air inlet direction of the filter element, the first connecting surface extends obliquely or in an arc shape toward the dust guide portion.

5. The filter module according to claim 1 or 2, characterized in that: The air inlet surface of the air inlet portion is arranged in the form of an outwardly convex arc surface, a platform surface or a conical surface.

6. The filter module according to claim 1 or 2, characterized in that: The dust guiding portion has a second connecting surface connected to the adjacent air inlet portion. In the air inlet direction of the filter element, the second connecting surface extends obliquely or in an arc shape toward the air inlet portion.

7. The filter module according to claim 1 or 2, characterized in that: The surface of the dust guiding part is arranged in the form of an arc surface, a platform surface or a cone surface.

8. The filter module according to claim 2, characterized in that: At least part of the dust collecting part is exposed on the outer wall of the hair dryer, and the exposed part is arranged corresponding to the dust collecting cavity.

9. The filter module according to claim 8, characterized in that: At least the exposed portion of the dust collecting member is made of a transparent material so that the inside of the dust collecting cavity can be visualized.

10. The filter module according to claim 2, characterized in that: The dust collecting part is accommodated in a receiving groove recessed on the outer wall of the hair dryer, and can be slidably drawn out from the receiving groove under the driving of external force.

11. The filter module according to claim 2, characterized in that: The dust collecting part is accommodated in a receiving groove recessed on the outer wall of the third filter module of the hair dryer, and can be slidably drawn out from the receiving groove under the driving of external force.

12. The filter module according to claim 2, characterized in that: The dust collecting member is accommodated in a receiving groove formed by the outer wall of the hair dryer and the outer wall of the third filter module, and can be slidably drawn out of the receiving groove under the driving of an external force.

13. The filter module according to claim 11 or 12, characterized in that: The dust collecting element is arranged in a local area corresponding to the filter element, and the third filter module is provided with a guide groove, which connects the dust collecting cavity and the dust guiding part in a non-local area to guide the impurities in the dust guiding part into the dust collecting cavity.

14. The filter module according to claim 2, characterized in that: The dust collecting cavity includes one dust collecting chamber or a plurality of dust collecting chambers.

15. The filter module according to claim 14, characterized in that: The dust collecting chamber includes a first dust collecting chamber and a second dust collecting chamber, the first dust collecting chamber is connected to the dust guiding portion, and the second dust collecting chamber is connected and arranged on a side of the first dust collecting chamber away from the dust guiding portion, and a screening structure is arranged at the connection between the first dust collecting chamber and the second dust collecting chamber, and the screening structure is used to retain large-sized impurities in the first dust collecting chamber and transport small-sized impurities into the second dust collecting chamber.

16. The filter module according to claim 14, characterized in that: The dust collecting chamber includes a first dust collecting chamber and a second dust collecting chamber, the first dust collecting chamber and the second dust collecting chamber are arranged side by side, the second dust collecting chamber is connected to the dust guiding part, and a screening structure is provided at the connection between the second dust collecting chamber and the dust guiding part, the screening structure is used to transport small-sized impurities into the second dust collecting chamber, and the opening of the first dust collecting chamber is arranged adjacent to the screening structure, so that large-sized impurities retained on the screening structure can enter the first dust collecting chamber through the opening.

17. The filter module according to claim 2, characterized in that: The dust collecting cavity includes at least one dust collecting chamber, and the filtering device also includes: Alarm module; a sensor module, disposed in the dust collecting chamber, wherein the sensor module triggers a sensing signal when the amount of dust collected in the dust collecting chamber reaches a preset threshold; and The control module is electrically connected to the alarm module and the sensor module respectively, so as to control the alarm module to issue an alarm prompt when receiving the sensing signal.

18. The filter module according to claim 17, characterized in that: The dust collecting chamber is provided with at least two; The sensing module triggers a sensing signal associated with any of the dust collecting chambers when the amount of dust collected in the dust collecting chambers reaches a corresponding preset threshold value; When the control module receives the sensing signal associated with any of the dust collecting chambers, the control module controls the alarm module to issue an alarm prompt.

19. The filter module according to claim 18, characterized in that The sensing signals associated with each of the dust collecting chambers are configured differently.

20. The filter module according to claim 17, characterized in that: The sensing module includes a photoelectric sensor, which includes a photoelectric emitting part and a photoelectric receiving part. The photoelectric emitting part and the photoelectric receiving part are arranged on the opposite side walls of the dust collecting chamber. When the photoelectric emitting part emits a photoelectric signal and the photoelectric receiving part does not receive the photoelectric signal, the photoelectric sensor triggers the sensing signal.

21. The filter module according to claim 17, characterized in that: The sensing module includes a photosensor, which is disposed in the dust collecting chamber, and triggers the sensing signal when a resistance value of the photosensor is greater than a resistance threshold.

22. The filter module according to claim 17, characterized in that At least two sensor modules are provided, and they correspond one to one to the dust collecting chambers.

23. A filtering module, characterized in that: include: A filter element is used to be arranged at the air inlet of a hair dryer. The filter element is provided with a dust guide portion and an air inlet portion. A through hole is provided on the air inlet surface of the air inlet portion. The dust guide portion is concave relative to the air inlet portion, and the surface of the dust guide portion is a smooth surface. The dust guide portion is located at one end of the filter element and is used to collect dust.

24. A filtering device, characterized in that: include: A filter assembly is arranged at the air inlet of the hair dryer; as well as, An interference member is located at one end of the filter assembly and has an interference stroke that moves toward the other end of the filter assembly under the drive of an external force. When performing the interference stroke, the interference member acts on the filter assembly to separate impurities accumulated on the filter assembly from the filter assembly.

25. The filtering device according to claim 24, characterized in that When the interference stroke is performed, the interference member maintains sliding contact with the filter assembly.

26. The filtering device according to claim 24, characterized in that The filter assembly includes a second filter module, the interference member is arranged on the air inlet side of the second filter module, and when performing the interference stroke, the interference member is separated from the impurities accumulated on the air inlet side of the second filter module.

27. The filtering device according to claim 26, characterized in that The filter assembly further includes a third filter module, which is disposed on the air inlet side of the second filter module and is spaced apart from the second filter module; The interference member is disposed at a gap between the second filter module and the third filter module.

28. The filtering device according to claim 27, characterized in that When performing the interference stroke, the interference member also acts on the third filter module to separate impurities accumulated on the air outlet side of the third filter module.

29. The filtering device according to claim 27, characterized in that The interference member is fixed to one end of the air outlet side of the third filter module. As the third filter module moves relative to the second filter module, the interference member acts on the second filter module to separate impurities accumulated on the air inlet side of the second filter module.

30. The filtering device according to claim 24, characterized in that The filtering device further comprises an operating component, which cooperates with the filtering assembly and / or the interference member under the driving of an external force to form an interference stroke of the interference member.

31. The filtering device according to claim 30, characterized in that The operating component includes at least one sliding protrusion, and a sliding groove is provided on the filter assembly. The sliding protrusion is fixed on the interference member, and the sliding protrusion extends out of the filter assembly through the sliding groove, so that the user drives the sliding protrusion to slide along the length direction of the sliding groove to form the interference stroke.

32. The filtering device according to claim 30, characterized in that The operating component also includes an elastic member, one end of which is fixed relative to the filter assembly, and the other end of which is connected to the interference member, so that when the external force driving is cancelled, the elastic member drives the interference member to reset.

33. The filtering device according to claim 24, characterized in that The filter assembly comprises the filter module according to any one of claims 1 to 23.

34. The filtering device according to claim 33, characterized in that The interference member is also arranged at one end of the dust collecting chamber, and the other end of the dust collecting chamber is open. The interference member performs the interference stroke from one end to the other end in the dust collecting chamber to remove impurities stored in the dust collecting chamber.

35. The filtering device according to claim 33, characterized in that The filter device is arranged on the air inlet of the hair dryer body, the filter assembly is fixed on the body, and a dust outlet is provided at the end of the interference stroke so that dust on the filter assembly can be discharged from the filter device through the dust outlet.

36. The filtering device according to claim 35, characterized in that The filter assembly is adapted to the shape of the air inlet, and the dust outlet is provided at one end of the filter assembly away from the body; The machine body further comprises a bottom cover, and the bottom cover is arranged at the dust outlet.

37. The filtering device according to claim 36, characterized in that The bottom cover can open and close the dust outlet, and when the dust outlet is opened, impurities separated from the filter assembly are discharged outward through the dust outlet.

38. The filtering device according to claim 36, characterized in that The bottom cover is fixedly connected to the machine body, and a dust outlet is provided on the bottom cover corresponding to the interference member, so that impurities separated from the filter assembly can be discharged outward through the dust outlet.

39. A hair dryer, characterized in that: The hair dryer comprises a filter module as claimed in any one of claims 1 to 23 and / or a filter device as claimed in any one of claims 24 to 38.

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