CN115945002A - Self-cleaning filtering device and clothes dryer with same - Google Patents

Abstract

The invention relates to the field of clothes dryers, in particular to a self-cleaning filtering device and a clothes dryer with the same. Wherein, self-cleaning filter equipment includes: the filtering part is used for filtering the flock in the clothes dryer; the collecting part is arranged on one side of the filtering part and is used for collecting the flock; the cleaning part can move relative to the filtering part and is used for cleaning the flocks on the filtering part and collecting the flocks into the collecting part; and the driving part is in driving connection with the cleaning part and is used for driving the cleaning part to move relative to the filtering part. Like this, after drying at every turn, usable drive division drive cleaning portion removes for the filter house, cleans the flock on the filter house to collect the flock to the collection portion in, make the user need not all clean filter screen after using at every turn, promoted user's use greatly and experienced good sense.

Description

Self-cleaning filtering device and clothes dryer with same

Technical Field

The invention relates to the field of clothes dryers, in particular to a self-cleaning filtering device and a clothes dryer with the same.

Background

In recent years, the heat pump clothes dryer is popular among users due to the characteristics of energy conservation and low-temperature drying without damaging clothes. But present heat pump dryer uses inconvenient, all needs the user to clear up the flock that collects on the filter screen manually after using at every turn, otherwise will influence the stoving effect of next use, and it wastes time and energy to clean, is difficult to clean totally, leads to user experience relatively poor.

Disclosure of Invention

In order to solve the technical problem that a filter screen of a clothes dryer needs to be manually cleaned after being used every time in the related art, a self-cleaning filtering device and the clothes dryer with the same are provided.

According to one aspect of the present invention, there is provided a self-cleaning filtration device comprising: the filtering part is used for filtering the flock in the clothes dryer; the collecting part is arranged on one side of the filtering part and is used for collecting the flock; the cleaning part can move relative to the filtering part and is used for cleaning the flocks on the filtering part and collecting the flocks into the collecting part; and the driving part is in driving connection with the cleaning part and is used for driving the cleaning part to move relative to the filtering part.

Further, the filtering part and the collecting part are integrally arranged; or the filtering part and the collecting part body are arranged.

Further, the filter part and/or the collecting part may be provided in a drawable manner.

Further, the driving part includes: the two axial ends of the rotating shaft are respectively provided with a belt wheel, and the two rotating shafts are arranged at intervals; the two conveying belts are respectively sleeved on belt wheels at two ends of the two rotating shafts; the motor is in driving connection with one of the two rotating shafts; the cleaning portion includes: the cleaning brush is arranged between the two conveyor belts; the rotating shaft and the motor are positioned outside the front shell air duct of the clothes dryer.

Further, the self-cleaning filtering device comprises: the integrated drawing box is separated by a partition plate to form a filtering chamber and a collecting chamber and can be arranged in a front shell air duct of the clothes dryer in a drawing manner; the first filter screen is arranged at an opening above the filter chamber to form primary filtration, and the filter chamber forms secondary filtration; the first filter screen and the filter chamber form a filter part, and the collection chamber forms a collection part; the cleaning part can move relative to the first filter screen and is used for cleaning the flocks on the first filter screen into the collecting chamber.

Further, the self-cleaning filtering device comprises: the first drawing box is provided with a filtering chamber and can be arranged in a front shell air duct of the clothes dryer in a drawing way; the second filter screen is arranged at an opening above the filter chamber to form primary filtration, and the filter chamber forms secondary filtration; the second drawing box is arranged outside the front shell air duct of the clothes dryer in a drawing manner, is arranged on one side of the first drawing box and is positioned below the first drawing box; one end of the flock channel is positioned at one side of the first drawing box, and the other end of the flock channel is communicated with the second drawing box; the second filter screen and the filter chamber form a filter part, and the second drawing box and the flock channel form a collecting part.

Further, the cleaning fan is arranged behind the second drawing box and used for forming a negative pressure environment in the collecting part; and the third filter screen is arranged behind the second drawing box and used for preventing the flock from entering the cleaning fan.

Further, the position of the second drawing box is consistent with the position of a drainage pump cleaning opening of the clothes dryer; and/or the size of the second drawing box is consistent with that of a drainage pump cleaning opening of the clothes dryer.

Further, the self-cleaning filtering device further comprises: the filter grille is detachably arranged on a front shell assembly of the clothes dryer and is positioned at an air inlet of the front shell air duct, and the filter grille is positioned above the cleaning part; and/or a filter sponge detachably disposed on the front case assembly of the dryer and located below the filter part.

Further, the self-cleaning filtering device further comprises: the sensing part is arranged in the collecting part and used for judging whether the flocks in the collecting part are fully collected.

According to another aspect of the present invention, there is provided a clothes dryer comprising the self-cleaning filtering device described above.

By applying the technical scheme of the invention, after drying each time, the driving part can be used for driving the cleaning part to move relative to the filtering part, so that the flock on the filtering part can be cleaned, and the flock can be collected in the collecting part, so that a user does not need to clean the filter screen after using each time, and the use experience of the user is greatly improved.

Drawings

FIG. 1 is a schematic view showing a structure of a clothes dryer according to an alternative embodiment of the present invention, in which a filtering part and a collecting part of a self-cleaning filtering apparatus are integrally provided;

FIG. 2 illustrates a schematic structural view of another angle of the dryer of FIG. 1;

FIG. 3 is a perspective view schematically illustrating a partial structure of the dryer of FIG. 1;

FIG. 4 is a schematic view showing a construction of a dryer in which a filtering part and a collecting part of a self-cleaning filtering means are separately provided, according to another alternative embodiment of the present invention;

FIG. 5 is a schematic view illustrating another angle of the dryer of FIG. 4;

fig. 6 is a perspective view illustrating a partial structure of the dryer of fig. 4.

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention.

In the drawings:

10. a filtering part; 20. a collecting section; 30. a cleaning section; 31. a cleaning brush; 40. a drive section; 41. a rotating shaft; 42. a conveyor belt; 43. a motor; 100. an integral drawer box; 101. a partition plate; 102. a filtering chamber; 103. a collection chamber; 200. a first filter screen; 300. a first drawer box; 400. a second filter screen; 500. a second drawer box; 600. a lint passage; 700. cleaning the fan; 800. a third filter screen; 50. filtering the grating; 60. filtering the sponge; 1. a housing; 11. a laundry input port; 12. a front housing assembly; 2. a door body assembly; 3. a barrel member; 4. a front shell duct; 5. a rear housing duct; 6. two air ducts; 7. an evaporator; 8. a condenser; 9. clothes drying fan.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to solve the technical problem that a filter screen of a clothes dryer in the related art needs to be manually cleaned after being used every time, the invention provides a self-cleaning filtering device and the clothes dryer with the same.

As shown in fig. 1 to 6, the self-cleaning filtering apparatus includes: a filtering part 10 for filtering the lint in the clothes dryer; a collecting part 20, the collecting part 20 is arranged at one side of the filtering part 10 and is used for collecting the flock; a cleaning part 30, wherein the cleaning part 30 can move relative to the filter part 10, and is used for cleaning the flocks on the filter part 10 and collecting the flocks into the collecting part 20; and the driving part 40, wherein the driving part 40 is in driving connection with the cleaning part 30 and is used for driving the cleaning part 30 to move relative to the filtering part 10.

Like this, after drying at every turn, usable drive division drive cleaning portion removes for the filter house, cleans the flock on the filter house to collect the flock in the collecting part 20, make the user need not all clean the filter screen after using at every turn, promoted user's use greatly and experienced good sense.

Alternatively, as shown in fig. 1 to 3, the filter part 10 and the collection part 20 are integrally provided. Thus, the assembly is convenient and the number of parts is less.

Alternatively, as shown in fig. 4 to 6, the filter part 10 and the collection part 20 are separately provided. Thus, the disposition position, shape and size of the collecting part 20 can be more flexibly set.

Alternatively, the filter portion 10 and/or the collecting portion 20 may be provided drawably. In this way, the filter portion 10 and/or the collecting portion 20 can be easily taken out for cleaning.

As shown in fig. 3, the filter part 10 and the collecting part 20 are integrally provided and drawably provided. Therefore, the clothes dryer can be conveniently taken out together after being used for a period of time, and the clothes dryer can be cleaned.

As shown in fig. 6, the filter unit 10 and the collecting unit 20 are separately provided, and both the filter unit 10 and the collecting unit 20 are provided to be drawable. In this way, it is convenient to take out the filter part 10 or the collection part 20 as needed after the dryer is used for a certain period of time, and clean it.

Alternatively, the filter portion 10 and/or the collecting portion 20 may be drawn up and down or back and forth, and the drawing direction may be selected according to actual needs.

Alternatively, as shown in fig. 1 to 6, the driving part 40 includes: the two axial ends of the rotating shaft 41 are respectively provided with a belt wheel, and the two rotating shafts 41 are arranged at intervals; the two conveying belts 42 are respectively sleeved on belt wheels at two ends of the two rotating shafts 41; the motor 43, the motor 43 is in driving connection with one of the two rotating shafts 41; the cleaning portion 30 includes: a cleaning brush 31, the cleaning brush 31 being disposed between the two conveyor belts 42; the rotation shaft 41 and the motor 43 are located outside the front casing duct 4 of the dryer. In this way, the area of the conveyor belt 42 in the front shell air duct 4 is small, blocking of air circulation can be avoided, and the rotating shaft 41 and the motor 43 are located outside the front shell air duct 4 of the dryer, only the conveyor belt 42 moves inside the air duct, and even if the lint adheres to the conveyor belt 42, the rotation of the conveyor belt 42 is not affected.

Optionally, the conveyor belt 42 is a belt. The direction of the belt is in the anticlockwise direction in the operation process, and the cleaning brush 31 cleans the flocks from left to right and then sweeps the flocks into the collection chamber 103, and the flocks can reset from right to left along with the movement of the belt to the upper part.

If drive division 40 uses the screw rod, structures such as slide rail need expose in the wind channel, and the easy dead condition of card that produces of dander accumulation on the track, the drive division 40 of this application adopts conveyer belt 42, can avoid the dander accumulation to cause the dead condition of card.

In an alternative embodiment of the present application, as shown in fig. 3, a self-cleaning filter device comprises: the integrated drawing box 100 is divided by a partition plate 101 to form a filtering chamber 102 and a collecting chamber 103, and the integrated drawing box 100 is arranged in the front shell air duct 4 of the clothes dryer in a drawing way; the first filter screen 200, the first filter screen 200 is arranged at the upper opening of the filter chamber 102; the first filter screen 200 and the filter chamber 102 form a filter part 10, and the collection chamber 103 forms a collection part 20; the cleaning part 30 is movable relative to the first filter 200 for cleaning the lint on the first filter 200 into the collection chamber 103.

Optionally, first filter 200 is a fine filter.

Optionally, the side walls and bottom of filter chamber 102 are open and a filter mesh structure is provided for secondary filtration.

In another alternative embodiment of the present application, as shown in fig. 6, a self-cleaning filter device comprises: a first drawing box 300, the first drawing box 300 is provided with a filter chamber 102, the first drawing box 300 can be arranged in the front shell air duct 4 of the clothes dryer in a drawing way; a second filter 400, the second filter 400 being disposed at an upper opening of the filter chamber 102; the second drawing box 500, the second drawing box 500 is drawably arranged outside the front casing air duct 4 of the clothes dryer, the second drawing box 500 is arranged at one side of the first drawing box 300 and is positioned below the first drawing box 300; one end of the flock channel 600 is positioned at one side of the first drawing and pulling box 300, and the other end of the flock channel 600 is communicated with the second drawing and pulling box 500; the second filter screen 400 and the filter chamber 102 form a filter part 10, and the second drawer 500 and the lint duct 600 form a trap part 20. The cleaning part 30 is movable with respect to the second filter 400 for cleaning the lint on the second filter 400 into the lint path 600 and the second drawer 500. In this way, the collecting unit 20 is independently installed without occupying the air passage air passing area, and the second drawer 500 has a larger capacity as a collecting box.

Optionally, the second filter 400 is a fine filter.

As shown in fig. 6, a cleaning fan 700, the cleaning fan 700 being disposed at the rear of the second drawer 500, for forming a negative pressure environment in the collecting part 20; and a third filter screen 800, the third filter screen 800 being disposed at the rear of the second drawing box 500, for preventing lint from entering the cleaning fan 700.

Alternatively, the position of the second drawer 500 coincides with the position of the drain pump cleaning opening of the dryer; and/or the second drawing box 500 has a size corresponding to that of the drain pump cleaning opening of the dryer. In this way, the appearance of the suit combination can be made more uniform.

Alternatively, the second drawing box 500 is disposed at a lower right corner of the dryer.

Optionally, as shown in fig. 1 to 6, the self-cleaning filtering device further comprises: and a filter grill 50, wherein the filter grill 50 is detachably arranged on the front shell assembly 12 of the clothes dryer, the filter grill 50 is positioned at the air inlet of the front shell air duct 4, and the filter grill 50 is positioned above the cleaning part 30. Thus, the filter screen 50 is used to filter larger debris. The filter screen 50 may also be periodically removed for cleaning.

Optionally, as shown in fig. 1 to 6, the self-cleaning filtering device further comprises: and a filter sponge 60, the filter sponge 60 being detachably provided on the front case assembly 12 of the dryer and located below the filter part 10. Thus, the filter sponge 60 can be removed for cleaning by using the filter sponge 60 as the last layer of protection.

Alternatively, the filter sponge 60 may be provided integrally with the filter unit 10, or may be provided separately from the filter unit 10.

Optionally, the self-cleaning filter device further comprises: and the sensing part is arranged in the collecting part 20 and is used for judging whether the flocks in the collecting part 20 are fully collected or not. Therefore, when the sensing part judges that the fluff in the collecting part 20 is fully collected, the user can be reminded to clean.

The present application also provides a clothes dryer comprising the above or below self-cleaning filtering device.

As shown in fig. 1 to 6, the dryer further includes: a housing 1 having a laundry input port 11; the door body component 2 is connected with the shell 1 and is arranged at the clothes input opening 11 in an openable and closable manner; a drum part 3, the drum part 3 is arranged in the shell 1 and is provided with an accommodating space for loading clothes, and the accommodating space is communicated with the clothes input opening; a front shell air duct 4, the front shell air duct 4 being communicated with the front end of the accommodating space of the barrel part 3; a rear casing air duct 5, the rear casing air duct 5 being communicated with the rear end of the accommodating space of the barrel part 3; two ends of the two air ducts 6 are respectively communicated with the front shell air duct 4 and the rear shell air duct 5; the evaporator 7 and the condenser 8 are sequentially arranged in the two air channels 6 along the flowing direction of the air flow; a clothes drying fan 9, the clothes drying fan 9 is arranged in the rear shell air duct 5.

Optionally, the housing 1 comprises a front shell assembly 12, the self-cleaning filter device being provided on the front shell assembly 12.

Therefore, the accommodating space of the barrel part 3, the front shell air duct 4, the rear shell air duct 5 and the two air ducts 6 jointly form air circulation, a clothes drying fan 9 arranged in the rear shell air duct 5 is used as driving force, the two assemblies are used for condensing and heating air, and the air is sent into the barrel part from the rear air duct to dry clothes. The two components are a condenser 8 and an evaporator 7, wind firstly flows through the evaporator 7, the wet and hot air is condensed by the low temperature of the evaporator 7 and then flows through the condenser 8, and the air is heated by the high temperature of the condenser 8 to dry clothes. When the clothes dryer is operated, the door assembly 2 closes the clothes input opening 11, the inside of the clothes dryer is in a sealed state relative to the outside, and air enters the front shell air duct 4 from the filter grille 50 through the drum part 3, is filtered by the filter part 10 and then enters the two air ducts 6. The rotating shaft 41 and the driving motor 43 are arranged on the outer side of the front shell air duct 4 and are also the outer side of the clothes input opening 11, rectangular holes are respectively formed in the left side and the right side of the front shell air duct 4 and are used for avoiding the conveying belt 42 and the cleaning brush 31, the air enters the lower part from the front shell air duct 4 due to the fact that the negative pressure area is arranged at the position, the air at the position where the belt is avoided through the opening of the side edge is also from the outside to enter the air duct, and the problem of leakage of damp and hot air is avoided.

Alternatively, the cleaning brush 31 is elongated and has a length corresponding to or slightly longer than that of the filter part 10, and the cleaning brush head may be of a structure similar to that of toothbrush bristles or of small rubber particles.

The clothes can generate the hair scraps in the drying process of the clothes dryer, and in order to prevent the hair scraps of the clothes from entering the two assemblies to cause dirt blockage and influence the drying effect, a filtering device is arranged in the front shell air duct 4 to block the hair scraps. This application carries out self-cleaning to the filter screen through the cleaning part 30 that sets up the automatically cleaning filter equipment on preceding shell subassembly 12, sweeps into the hair bits and collects the box, in the collection portion 20 promptly, need not to use at every turn after manual clean, can use after several times the hair bits in the collection portion 20 pour out can. The motor drive pivot carries out rotary motion, drives and fixes the belt in the pivot and moves, blocks the air cycle for avoiding the too big influence of belt area, and the belt setting is in the pivot left and right sides, and the cleaning brush is fixed between two belts, uses the pivot to drive belt transmission and carries out clear advantage lie in that the rotating-structure setting is outside at the wind channel, and the inside only belt motion in wind channel, and the dander is even attached to and also does not influence the belt rotation on the belt.

This application is through setting up clean portion 30 and drive division 40 on the shell in the front, clears up the flock on the filter house 10 automatically, sweeps into collection portion 20 with the flock after drying at every turn for the user need not all clean the filter screen after using at every turn, improves user's use greatly and experiences.

Optionally, the clothes dryer that this application provided is the heat pump clothes dryer, through the design of filter screen automatically cleaning structure, can be automatically with the flock of drying back filter screen interception at every turn collect the box in the flock, the user can separate several cycles and concentrate the clearance once, it is also comparatively convenient to clear up, only need will collect in the box the flock pour out can, need not to scrub the filter screen.

Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise construction, arrangements, or implementations described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230," "upper surface," "above," and the like may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. A self-cleaning filter device, comprising:

a filtering part (10) for filtering the flock in the clothes dryer;

a collecting part (20), wherein the collecting part (20) is arranged at one side of the filtering part (10) and is used for collecting the flock;

a cleaning part (30), wherein the cleaning part (30) can move relative to the filtering part (10) and is used for cleaning the flocks on the filtering part (10) and collecting the flocks into the collecting part (20);

the driving part (40) is in driving connection with the cleaning part (30) and is used for driving the cleaning part (30) to move relative to the filtering part (10).

2. Self-cleaning filtering device according to claim 1,

the filter part (10) and the collection part (20) are integrally arranged; or

The filtering part (10) and the collecting part (20) are arranged separately.

3. Self-cleaning filtering device according to claim 1,

the filter part (10) and/or the collecting part (20) are arranged in a drawable manner.

4. Self-cleaning filtering device according to claim 1,

the drive unit (40) includes:

the belt wheel is arranged at each of the two axial ends of the rotating shaft (41), and the two rotating shafts (41) are arranged at intervals;

the two conveying belts (42) are respectively sleeved on belt wheels at two ends of the two rotating shafts (41);

the motor (43), the motor (43) is in driving connection with one of the two rotating shafts (41);

the cleaning section (30) includes:

a cleaning brush (31), the cleaning brush (31) being disposed between the two conveyor belts (42);

the rotating shaft (41) and the motor (43) are positioned outside a front shell air duct (4) of the clothes dryer.

5. Self-cleaning filtering device according to claim 1, characterized in that it comprises:

the integrated drawing box (100) is separated by a partition plate (101) to form a filtering chamber (102) and a collecting chamber (103), and the integrated drawing box (100) can be arranged in a front shell air duct (4) of the clothes dryer in a drawing mode;

the first filter screen (200) is arranged at an opening above the filter chamber (102) to form primary filtration, and the filter chamber (102) forms secondary filtration;

the first filter screen (200) and the filter chamber (102) forming the filter portion (10), the collection chamber (103) forming the collection portion (20);

the cleaning portion (30) is movable relative to the first filter (200) for cleaning lint from the first filter (200) into the collection chamber (103).

6. Self-cleaning filtering device according to claim 1,

the self-cleaning filter device comprises:

a first drawing box (300), wherein the first drawing box (300) is provided with a filtering chamber (102), and the first drawing box (300) is arranged in a front shell air duct (4) of the clothes dryer in a drawing way;

the second filter screen (400), the second filter screen (400) is arranged at the opening above the filter chamber (102) to form primary filtration, and the filter chamber (102) forms secondary filtration;

the second drawing box (500) is arranged outside a front shell air duct (4) of the clothes dryer in a drawing manner, and the second drawing box (500) is arranged on one side of the first drawing box (300) and is positioned below the first drawing box (300);

one end of the flock channel (600) is positioned at one side of the first drawing box (300), and the other end of the flock channel (600) is communicated with the second drawing box (500);

the second filter screen (400) and the filter chamber (102) form the filter part (10), and the second drawer box (500) and the lint duct (600) form the collecting part (20).

7. Self-cleaning filtering device according to claim 6,

the cleaning fan (700), the cleaning fan (700) is arranged behind the second drawing box (500), and is used for forming a negative pressure environment in the collecting part (20);

and the third filter screen (800), the third filter screen (800) is arranged behind the second drawing box (500) and used for preventing the flock from entering the cleaning fan (700).

8. Self-cleaning filtering device according to claim 6,

the position of the second drawing box (500) is consistent with the position of a drainage pump cleaning opening of the clothes dryer; and/or

The size of the second drawing box (500) is the same as that of a drain pump cleaning opening of the clothes dryer.

9. Self-cleaning filtering device according to claim 1,

the self-cleaning filter device further comprises:

the filter grille (50), the said filter grille (50) is set up on the front shell assembly (12) of the dryer removably, the said filter grille (50) locates at the air intake of the wind channel (4) of the front shell, the said filter grille (50) locates above the cleaning portion (30); and/or

A filter sponge (60), the filter sponge (60) being detachably disposed on a front case assembly (12) of the dryer and located below the filter part (10).

10. Self-cleaning filtering device according to claim 1,

the self-cleaning filter apparatus further comprises:

the sensing part is arranged in the collecting part (20) and used for judging whether the flocks in the collecting part (20) are fully collected.

11. Laundry dryer, characterized in that it comprises a self-cleaning filtering device according to any one of claims 1 to 10.

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