Clothes drying equipment

Abstract

The utility model provides clothes drying equipment which comprises a roller, a front support and a filtering device. The front support is arranged in front of the roller; an air outlet duct is formed in the front support and comprises an air outlet duct lower section; the filter screen assembly is fixedly arranged in the air outlet duct lower section and comprises a first filter screen and a second filter screen, and the first filter screen and the second filter screen can filter air in the air outlet duct lower section twice; the cleaning assembly is used for cleaning soft flocks on the first filter screen and the second filter screen; a first chip removal opening and a second chip removal opening are formed in the bottom of the air outlet duct lower section; the chip collecting box is arranged below the lower section of the air outlet duct and forms a first chip collecting cavity and a second chip collecting cavity which are not communicated with each other; the first chip collecting cavity is used for collecting soft chips which fall off from the first filter screen and are discharged through the first chip discharging opening; the second chip collecting cavity is used for collecting soft chips which fall off from the second filter screen and are discharged through the second chip discharging opening; and the first chip collecting cavity and the second chip collecting cavity do not communicate with each other, so that the drying airflow is prevented from forming short circuit in the chip collecting box to reduce the filtering effect of the filtering device.

Description

Technical Field

[0001] This utility model belongs to the field of clothing processing technology, and in particular relates to a clothes drying device. Background Technology

[0002] During the use of a clothes dryer, clothes generate a large amount of lint and dust. If this lint and dust are not effectively handled, it will have many adverse effects on the operation of the dryer. Traditional clothes dryers lack a proper lint handling mechanism, which allows lint to easily accumulate inside the dryer and may even enter critical components, thereby affecting the drying performance and increasing the risk of malfunction.

[0003] While some existing dryers feature simple filtration designs, they generally suffer from poor filtration efficiency or inconvenient lint removal. Some filtration devices have a simplistic structure, only capable of preliminary lint interception and unable to target lint from different locations, resulting in uneven lint distribution on the filter and difficulty in complete removal. Furthermore, the automatic cleaning methods used are inefficient and incomplete, leaving lint residue inside the dryer after cleaning. Additionally, the drying airflow can easily short-circuit within the lint collector, reducing the filtration effectiveness of the device. Utility Model Content

[0004] In view of this, the present invention provides a clothes drying device to solve the problems of insufficient cleaning power and incomplete cleaning of the self-cleaning component and filter device in existing clothes dryers, and the short circuit formed by the drying airflow in the dust collection box, which leads to a reduction in the filtration effect of the filter device.

[0005] This utility model provides a clothes drying device, which includes a roller, a front support, and a filter device. The front support is located in front of the roller. The front support has a clothes loading / unloading port and an air outlet. The clothes loading / unloading port corresponds to the opening of the roller. The air outlet is located below the clothes loading / unloading port and connects the roller and the air outlet. The air outlet includes a lower section, with an air outlet inlet at the top and an air outlet at the rear.

[0006] The filtration device includes a filter assembly, a cleaning assembly, and a lint collection box. The filter assembly is fixedly disposed within the lower section of the air outlet duct. The filter assembly includes a first filter and a second filter. The first filter is disposed below the inlet of the lower section of the air outlet duct, and the second filter is disposed at the outlet of the lower section of the air outlet duct. The first filter is used to filter the air entering the lower section of the air outlet duct through the inlet, and the second filter is used to filter the air filtered by the first filter. The cleaning assembly is movably disposed within the lower section of the air outlet duct and is used to clean the lint on the first and second filters.

[0007] The bottom of the lower section of the air outlet duct is formed with a first chip outlet and a second chip outlet, the first chip outlet is located below the first filter screen, and the second chip outlet is located below the second filter screen;

[0008] The chip collecting box is arranged below the lower section of the air outlet duct, the chip collecting box is formed with a first chip collecting cavity and a second chip collecting cavity which are not communicated with each other; the first chip collecting cavity and the first chip outlet are communicated, and the first chip collecting cavity is used for collecting the fluff that falls off the first filter screen and is discharged through the first chip outlet; the second chip collecting cavity and the second chip outlet are communicated, and the second chip collecting cavity is used for collecting the fluff that falls off the second filter screen and is discharged through the second chip outlet.

[0009] Further, the chip collecting box comprises a left wall, a right wall and a bottom wall, the left wall and the right wall are arranged oppositely, and the bottom wall connects the left wall and the right wall; the left wall is formed with a discharge port, and the bottom wall is arranged obliquely from the right wall to the left wall;

[0010] The inside of the chip collecting box is provided with a partition rib, the inside of the chip collecting box is divided into the first chip collecting cavity and the second chip collecting cavity by the partition rib; the first chip collecting cavity and the second chip collecting cavity are both communicated with the discharge port, and the first chip collecting cavity and the second chip collecting cavity are used for discharging the fluff in the first chip collecting cavity and the second chip collecting cavity.

[0011] Further, the filter device comprises a first spraying assembly and a second spraying assembly, the first spraying assembly comprises a first spraying head, the first spraying head is arranged in the lower section of the air outlet duct, and is used for flushing the fluff that falls off the first filter screen into the first chip collecting cavity;

[0012] The second spraying assembly comprises a second spraying head, the second spraying head is arranged in the second chip collecting cavity, and is used for flushing and discharging the fluff in the second chip collecting cavity.

[0013] Further, the lower section of the air outlet duct comprises a left wall and a right wall which are arranged oppositely; the first spraying head is arranged on the left wall; relative to the left wall, the first chip outlet is closer to the right wall.

[0014] Further, the front support is formed with a containing cavity below the lower section of the air outlet duct; or, the clothes drying device further comprises a base, the drum and the front support are both arranged on the base, and the base is formed with a containing cavity below the lower section of the air outlet duct;

[0015] The chip collecting box is arranged in the accommodating cavity; a labyrinth seal structure is formed between one end of the chip collecting box close to the top wall of the accommodating cavity and the top wall of the accommodating cavity, and between one end of the partition rib close to the top wall of the accommodating cavity and the top wall of the accommodating cavity.

[0016] Further, the first filter screen is cylindrical, and the axial direction of the first filter screen is the front-rear direction; the extending direction of the first chip outlet is parallel to the axial direction of the first filter screen.

[0017] The second filter screen is a circular filter screen, the second filter screen is arranged at one end of the axial direction of the first filter screen, and the second filter screen and the first filter screen are coaxially arranged; a blocking rib is arranged around the second filter screen, and a blocking rib opening is formed at the bottom of the blocking rib; the blocking rib opening and the second chip outlet are in position correspondence and communication, and are used for discharging the loose chips of the second filter screen to the second chip outlet.

[0018] Further, the cleaning assembly comprises a cleaning frame, a first cleaning member and a second cleaning member; the cleaning frame is rotatably arranged in the lower section of the air outlet duct; the first cleaning member and the second cleaning member are arranged on the cleaning frame; when the cleaning frame rotates, the first cleaning member can clean the first filter screen, and when the cleaning frame rotates, the second cleaning member can clean the second filter screen.

[0019] Further, the front end of the lower section of the air outlet duct is formed with an air outlet duct mounting opening; the filter device is detachably arranged in the lower section of the air outlet duct through the air outlet duct mounting opening.

[0020] The cleaning frame comprises a cleaning main frame, a first cleaning support, a support shaft and a second cleaning support; the cleaning main frame is arranged close to the air outlet duct mounting opening; one end of the first cleaning support is arranged on the cleaning main frame, and the other end of the first cleaning support extends to the outlet of the lower section of the air outlet duct; the first cleaning support is arranged on the inner side or the outer side of the first filter screen, and the first cleaning member is arranged on the first cleaning support; when the cleaning main frame rotates, the first cleaning member can clean the first filter screen.

[0021] One end of the support shaft is arranged on the cleaning main frame, and the other end of the support shaft is provided with the second cleaning support; the second cleaning member is arranged on the second cleaning support; the support shaft and the first filter screen are coaxially arranged and located on the inner side of the first filter screen; when the cleaning main frame rotates, the second cleaning member can clean the second filter screen.

[0022] The first cleaning member and the second cleaning member are both brushes.

[0023] Further optionally, the filtering device further comprises a mounting seat assembly, the mounting seat assembly comprises a first mounting seat and a second mounting seat which are arranged at intervals in front and back, the first mounting seat is arranged at the air outlet channel mounting port; the first mounting seat is formed with a shaft hole, the shaft hole and the first filter screen are coaxially arranged; the second mounting seat is arranged at the lower section outlet of the air outlet channel and the second mounting seat is formed with a ventilation port, the ventilation port is communicated with the lower section outlet of the air outlet channel;

[0024] The cleaning assembly further comprises a driving motor, the driving motor is arranged on the first mounting seat and located at a side away from the second mounting seat, the cleaning main frame is rotatably arranged on the first mounting seat and located at a side close to the second mounting seat; the output shaft of the driving motor is drivingly connected with the cleaning main frame through the shaft hole;

[0025] The filter screen assembly further comprises a first filter screen frame and a second filter screen frame, the first filter screen frame is arranged on the second mounting seat, and the first filter screen frame is in a cylindrical shape, the first filter screen covers the outer periphery of the first filter screen frame; the second filter screen frame is arranged at the ventilation port, the second filter screen frame is in a planar structure, and the second filter screen covers the second filter screen frame.

[0026] Further optionally, the first filter screen frame is rotatably arranged on the second mounting seat, and the first mounting seat is formed with a mounting hole;

[0027] The filtering device further comprises a knob and a transmission assembly, the knob is rotatably arranged at the mounting hole and located at a side of the first mounting seat away from the second mounting seat; the knob and the first filter screen frame are drivingly connected through the transmission assembly;

[0028] By rotating the knob, the transmission assembly rotates with the first filter screen frame and the first filter screen as a whole, so that different parts of the circumference of the first filter screen can be directed towards the lower section inlet of the air outlet channel.

[0029] Further optionally, the transmission assembly comprises a rack, a gear and a connecting rod, the rack is in a circular arc shape or a circular ring shape, the rack and the first filter screen frame are coaxially arranged and connected together; the rack and the gear are rotatably arranged on the second mounting seat, and the gear and the rack are engaged; one end of the connecting rod is connected with the knob, and the other end is connected with the gear;

[0030] When the knob rotates, the connecting rod rotates with the gear, and then the rack rotates with the first filter screen frame and the first filter screen as a whole.

[0031] Further optionally, the clothes drying device further comprises a base, a back plate, an air inlet shell and a two-organ assembly; the drum, the front support and the back plate are all arranged on the base, and the back plate is located at the rear of the drum; the air inlet shell is buckled on the back plate, and the air inlet shell and the back plate surround to form an air inlet channel; a rotatable drying fan blade is arranged in the air inlet channel, and the drying fan blade is used to provide power for a drying airflow;

[0032] The two-organ assembly comprises a two-organ box, an evaporator and a condenser, and the two-organ box is formed with a box channel; the evaporator and the condenser are arranged in the box channel, the evaporator is used to dehumidify the drying airflow, and the condenser is used to heat the drying airflow;

[0033] The air outlet channel further comprises an air outlet channel upper section, the air outlet channel upper section is located above the air outlet channel lower section, the air outlet channel upper section is communicated with the clothes taking and placing opening and the air outlet channel lower section inlet, and the air outlet channel upper section and the air outlet channel lower section constitute the air outlet channel;

[0034] The air outlet channel, the box channel, the air inlet channel and the drum are sequentially communicated to form a drying loop, and the drying loop can circulate a drying airflow.

[0035] Compared with the prior art, the clothes drying device has the following beneficial effects:

[0036] (1) The filtering device effectively improves the precision and comprehensiveness of the lint filtering; by arranging the first filter screen below the air outlet channel lower section inlet and the second filter screen at the outlet, the air entering and passing through the air outlet channel lower section can be filtered in stages, and the lint at different stages can be intercepted respectively, greatly reducing the possibility of lint entering other key parts of the clothes dryer, thereby ensuring the cleanliness of the clothes dryer, helping to maintain the stable and efficient drying performance of the clothes dryer, and reducing the problems of reduced drying efficiency and increased energy consumption caused by lint accumulation;

[0037] (2) The movable cleaning assembly can clean the lint on the first filter screen and the second filter screen, ensuring that the filter screens always maintain good filtering state and prolonging the service life of the filter screens;

[0038] (3) The first and second chip removal openings corresponding to the filter screen positions at the bottom of the air outlet channel lower section and the first and second lint collecting cavities in the lint collecting box communicated therewith realize the separate collection and timely cleaning of the lint falling from different filter screens, improve the convenience and thoroughness of lint cleaning, and overall optimize the performance of the clothes drying device; the first and second lint collecting cavities are not communicated with each other, avoiding the formation of a short circuit of the drying airflow in the lint collecting box, which reduces the filtering effect of the filtering device. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the accompanying drawings required to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creative labor.

[0040] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, for understanding and reading by those skilled in the art, and are not used to limit the implementation conditions of the present application, so they do not have technical significance, any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes of the present application, should still fall within the scope of the disclosed technology.

[0041] Figure 1a The assembly structure schematic diagram of the filter device embodiment provided by the present application is shown in the figure.

[0042] Figure 1b The exploded structure schematic diagram of the filter device embodiment provided by the present application is shown in the figure.

[0043] Figure 1c The longitudinal section structure schematic diagram of the filter device embodiment provided by the present application is shown in the figure.

[0044] Figure 1d The transverse section structure schematic diagram of the filter device embodiment provided by the present application is shown in the figure.

[0045] Figure 1e The front view structure schematic diagram of the filter device embodiment provided by the present application is shown in the figure.

[0046] Figure 1f The top view structure schematic diagram of the filter device embodiment provided by the present application is shown in the figure.

[0047] Figure 2 The assembly structure schematic diagram of the first cleaning element and the first filter screen embodiment provided by the present application is shown in the figure.

[0048] Figure 3a The internal structure schematic diagram of the clothes drying equipment embodiment provided by the present application is shown in the figure.

[0049] Figure 3b The external structure schematic diagram of the clothes drying equipment embodiment provided by the present application is shown in the figure.

[0050] Figure 4a And Figure 4b The shaft side section structure schematic diagram of the clothes drying equipment embodiment provided by the present application is shown in the figure.

[0051] Figure 5a The clothes drying equipment embodiment assembly structure schematic view provided by the utility model;

[0052] Figure 5b The clothes drying equipment embodiment explosion structure schematic view provided by the utility model;

[0053] Figure 5c The clothes drying equipment embodiment cross section structure schematic view provided by the utility model;

[0054] Figure 6 The front support embodiment structure schematic view provided by the utility model;

[0055] In the drawing,

[0056] 11 - first mounting seat, 111 - shaft hole, 12 - second mounting seat, 13 - ventilation cavity, 14 - blocking rib, 141 - blocking rib opening,

[0057] 21 - first filter screen frame, 22 - second filter screen frame, 23 - first filter screen, 24 - second filter screen,

[0058] 31 - cleaning main frame, 321 - first cleaning support, 322 - second cleaning support, 33 - support shaft, 341 - first cleaning piece, 342 - second cleaning piece, 35 - driving motor,

[0059] 4 - scrap collecting box, 41 - first scrap collecting cavity, 42 - second scrap collecting cavity, 431 - scrap collecting box left wall, 432 - scrap collecting box right wall, 433 - scrap collecting box bottom wall, 434 - scrap collecting box discharge port, 44 - partition rib,

[0060] 5 - spraying assembly, 51 - spraying head,

[0061] 61 - roller, 611 - barrel mouth, 612 - barrel back wall, 613 - drying air inlet, 62 - base, 63 - two device boxes, 64 - box channel, 651 - evaporator, 652 - condenser,

[0062] 7 - front support, 71 - clothes taking and placing opening, 72 - air outlet channel, 721 - air outlet channel lower section, 722 - air outlet channel upper section, 723 - air outlet channel mounting opening, 73 - drying air outlet, 741 - first chip removal opening, 742 - second chip removal opening, 751 - support upper shell, 752 - support lower shell,

[0063] 8 - box body, 81 - front panel, 811 - panel opening, 82 - left side plate, 83 - right side plate, 84 - back plate, 841 - back plate air passage, 85 - air inlet shell, 851 - air inlet channel,

[0064] 91 - door body, 92 - drying fan blade. DETAILED DESCRIPTION

[0065] The following describes the embodiments of the present application by specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the disclosure. Obviously, the described examples are only some of the embodiments of the present application, not all. Based on the examples in the present application, all other examples obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0066] The terms used in the embodiments of the present application are only for the purpose of describing specific examples, and are not intended to limit the present application. The singular forms "a", "an" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Multiple" generally includes at least two, but does not exclude the case of including at least one.

[0067] It should be understood that the term "and / or" used herein is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0068] It should be further noted that the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the goods or systems including a series of elements not only include those elements, but also include other elements not explicitly listed, or include elements inherent to such goods or systems. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the goods or systems including the element.

[0069] Some existing clothes dryers clean the filter device in the air duct through an automatic cleaning mode, but the automatic cleaning mode is not efficient and not thorough, so that lint is still left in the dryer after cleaning. In addition, the drying airflow is easy to form a short circuit in the lint collection box, which reduces the filtering effect of the filter device.

[0070] The utility model creatively provides a clothes drying equipment, including the drum, front support and filter device, front support sets up in the front of drum, front support forms the air outlet, is used for discharging the drying airflow in the drum, the air outlet includes air outlet lower section, the top of air outlet lower section forms air outlet lower section import and rear end forms air outlet lower section export, filter screen subassembly is fixedly arranged in air outlet lower section and includes first filter screen and second filter screen, first filter screen is used for filtering the air that enters air outlet lower section through air outlet lower section import, second filter screen is used for filtering the air after filtering through first filter screen, cleaning subassembly is used for cleaning the lint on first filter screen and second filter screen, the bottom of air outlet lower section forms first chip removal port, second chip removal port corresponding with first filter screen and second filter screen respectively, the chip collection box sets up below air outlet lower section and forms first chip collection cavity and second chip collection cavity that do not communicate with each other, first chip collection cavity and first chip removal port communicate, are used to collect the lint that first filter screen falls off and is discharged through first chip removal port, second chip collection cavity and second chip removal port communicate, are used to collect the lint that second filter screen falls off and is discharged through second chip removal port,

[0071] Realize the collection and timely cleaning of the lint that falls off different filter screens respectively, improve the convenience and completeness of lint cleaning, and the performance of the clothes drying equipment is optimized as a whole, first chip collection cavity and second chip collection cavity do not communicate with each other, avoid the short circuit of drying airflow in the chip collection box, cause the filtering effect of filter device to reduce.

[0072] Embodiment 1

[0073] As Figures 1a to 2 The utility model provides a filter device, including:

[0074] Mounting seat component, one side forms filter device air inlet, the other side forms filter device air outlet, the inside of mounting seat component forms the ventilation cavity 13 that passes through filter device air inlet and filter device air outlet,

[0075] Filter screen subassembly, including first filter screen 23 and second filter screen 24, first filter screen 23 sets up in ventilation cavity 13 and first filter screen 23 surrounds and sets into cylindrical or cambered surface shape, second filter screen 24 sets up at filter device air outlet and second filter screen 24 is plane filter screen or cambered surface shape, second filter screen 24 is located at the axial one end of first filter screen 23, first filter screen 23 is used for filtering the air in ventilation cavity 13, second filter screen 24 is used for filtering the air after filtering through first filter screen 23, namely the air in ventilation cavity 13 first flows through first filter screen 23, then flows through second filter screen 24,

[0076] Cleaning subassembly, including cleaning frame, first cleaning piece 341 and second cleaning piece 342, cleaning frame rotatably sets up in ventilation cavity 13, first cleaning piece 341 and second cleaning piece 342 all set up on cleaning frame and cleaning frame, first cleaning piece 341 and second cleaning piece 342 can synchronous rotation,

[0077] When the first cleaning member 341 rotates, the first filter screen 23 can be cleaned; when the second cleaning member 342 rotates, the second filter screen 24 can be cleaned.

[0078] The first filter screen 23 includes an axially first end and an axially second end arranged oppositely; the second filter screen 24 is located at the axially second end.

[0079] The cleaning frame includes a cleaning main frame 31, a first cleaning support 321, a support shaft 33 and a second cleaning support 322; the cleaning main frame 31 is arranged at the axially first end; one end of the first cleaning support 321 is arranged on the cleaning main frame 31 and the other end of the first cleaning support 321 extends to the axially second end; the first cleaning support 321 is arranged at the inner side or the outer side of the first filter screen 23, and the first cleaning support 321 is provided with the first cleaning member 341; one end of the support shaft 33 is arranged on the cleaning main frame 31, and the other end of the support shaft 33 is provided with the second cleaning support 322, and the second cleaning support 322 is provided with the second cleaning member 342; the support shaft 33 is arranged at the inner side of the first filter screen 23; the first cleaning support 321, the second cleaning support 322 and the cleaning main frame 31 can rotate synchronously, and when any one of the first cleaning support 321, the second cleaning support 322 and the cleaning main frame 31 rotates, the other two rotate.

[0080] Preferably, the first cleaning support 321 is arranged at the outer side of the first filter screen 23, the first cleaning member 341 is a first brush, and the second cleaning member 342 is a second brush; an end of the first brush close to the first filter screen 23 is arc-shaped.

[0081] Further, the first filter screen 23 is arranged in a cylindrical or arc-shaped manner, the second filter screen 24 is a circular planar filter screen or the structure of the second filter screen 24 is a part of a spherical surface, the first brush is arc-shaped; the support shaft 33, the first filter screen 23, the second filter screen 24 and the first brush are coaxially arranged; air enters the ventilation cavity 13 through the air inlet of the air filtering device, then flows through the first filter screen 23 and the second filter screen 24 in sequence, and then is discharged through the air outlet of the filtering device.

[0082] In the radial direction of the first filter screen 23, the distance between the first cleaning member 341 and the first filter screen 23 is adjustable; in the axial direction of the first filter screen 23, the distance between the second cleaning member 342 and the second filter screen 24 is adjustable; so that the first cleaning member 341 and the first filter screen 23 and the second cleaning member 342 and the second filter screen 24 are in full contact, and the cleaning is complete, comprehensive and efficient.

[0083] The first cleaning bracket 321 extends along the axial direction of the first filter screen 23, and a plurality of first cleaning brackets 321 are arranged at intervals along the circumferential direction of the first filter screen 23. Each first cleaning bracket 321 is provided with a first cleaning element 341 on the side facing the first filter screen 23. The first cleaning element 341 is in contact with the first filter screen 23. Preferably, the first cleaning element 341 and the first filter screen 23 are in interference fit, and the interference amount is between 1 mm and 5 mm, which ensures effective cleaning. Different interference amounts of different first cleaning elements 341 and the first filter screen 23 can be designed to achieve different degrees of cleaning.

[0084] The second cleaning bracket 322 extends along the diameter direction or the radius direction of the first filter screen 23, and the second cleaning bracket 322 is provided with a second cleaning element 342 on the side facing the second filter screen 24. The second cleaning element 342 is in contact with the second filter screen 24. Preferably, the second cleaning element 342 and the second filter screen 24 are in interference fit, and the interference amount is between 1 mm and 5 mm, which ensures effective cleaning. The second cleaning bracket 322 can be designed to be telescopic. When the telescopic amount of the second cleaning bracket 322 is different, the interference amount of the second cleaning element 342 and the second filter screen 24 is different, and different degrees of cleaning are achieved.

[0085] The density of the second filter screen 24 is greater than or equal to the density of the first filter screen 23, so as to ensure that the filtering effect reaches the best. The first cleaning element 341 and the second cleaning element 342 are not necessarily limited to brushes, but can also be rubber strips, plastic scrapers or other materials that can clean hair.

[0086] The hair that falls off from the first filter screen 23 and the second filter screen 24 will float in the ventilation cavity 13 or adhere to the side wall connected to the ventilation cavity 13. The specific way of removing these hairs is described below. The filtering device further comprises a hair collecting box 4 and a spraying assembly 5. The hair collecting box 4 is arranged below the filter screen assembly, and the spraying assembly 5 comprises a spraying head 51 arranged in the ventilation cavity 13. The spraying head 51 can spray fluid into the ventilation cavity 13, and the fluid sprayed by the spraying head 51 at least comprises water. When the spraying head 51 sprays water into the ventilation cavity 13, the water contacts the hair, increases the gravity of the hair and makes the hair sink downward, and then is washed into the hair collecting box 4.

[0087] After the spray head 51 sprays water into the ventilation cavity 13, water film is easily formed on the first filter screen 23 and the second filter screen 24, which affects the flow of the drying air flow. The following will further describe the way of cleaning the filter screen and removing the water film; the filter device is provided with a cleaning filter screen program running first and a water film removing program running later;

[0088] When the filter device is in the cleaning filter screen program, the cleaning frame rotates at a first rotating speed, the first cleaning member 341 cleans the first filter screen 23, and the second cleaning member 342 cleans the second filter screen 24; the spray head 51 sprays water into the ventilation cavity 13 to flush the hair clippings falling off the first filter screen 23 and the second filter screen 24 into the hair collecting box 4;

[0089] When the filter device is in the water film removing program, the cleaning frame rotates at a second rotating speed, the first cleaning member 341 pierces the water film on the first filter screen 23, and the second cleaning member 342 pierces the water film on the second filter screen 24; in combination with the flow of air, the water film evaporates; wherein the first rotating speed is less than the second rotating speed; the first rotating speed is below 30 r / min, and the second rotating speed needs to reach above 300 r / min.

[0090] The following will further describe the specific structure of the mounting seat assembly. The mounting seat assembly comprises a first mounting seat 11 and a second mounting seat 12 arranged in front of and behind each other, and a ventilation cavity 13 is formed between the first mounting seat 11 and the second mounting seat 12; the left side or the right side or the top of the ventilation cavity 13 forms a filter device air inlet, and the second mounting seat 12 forms a filter device air outlet; preferably, the top of the ventilation cavity 13 forms the filter device air inlet; the cleaning main frame 31 is rotatably arranged on the first mounting seat 11 and located on the side close to the second mounting seat 12;

[0091] The filter screen assembly further comprises a first filter screen frame 21 and a second filter screen frame 22, the first filter screen frame 21 is arranged on the second mounting seat 12 and located in the ventilation cavity 13; the first filter screen frame 21 is in a cylindrical shape, and the first filter screen 23 covers the outer periphery of the first filter screen frame 21; the second filter screen frame 22 is arranged at the filter device air outlet, and the second filter screen 24 covers the second filter screen frame 22.

[0092] Further, the first mounting seat 11 forms a shaft hole 111, the shaft hole 111 and the first filter screen 23 are coaxially arranged; the cleaning assembly further comprises a driving motor 35, the driving motor 35 is arranged on the first mounting seat 11 and located on the side away from the second mounting seat 12, the output shaft of the driving motor 35 penetrates through the shaft hole 111 and is drivingly connected with the cleaning main frame 31; when the driving motor 35 operates, the cleaning main frame 31 can rotate with the first cleaning support 321, the support shaft 33 and the second cleaning support 322, so that the first filter screen 23 and the second filter screen 24 can be automatically cleaned;

[0093] The first mounting seat 11, the driving motor 35, the cleaning main frame 31, the first cleaning support 321, the support shaft 33 and the second cleaning support 322 are integrally arranged to form a module, and the second mounting seat 12, the first filter screen frame 21, the first filter screen 23, the second filter screen frame 22 and the second filter screen 24 are integrally arranged to form another module, and the two modules are matched to form the filtering device.

[0094] In other embodiments, the first mounting seat 11 and the second mounting seat 12 are connected through the frame to connect the mounting seat assembly, the filter screen assembly and the cleaning assembly together and form an integral piece, so that the mounting seat assembly, the filter screen assembly and the cleaning assembly can be integrally disassembled, which is convenient and efficient.

[0095] In summary, the filtering device in the application can realize automatic cleaning of the lint attached to the filter screen, without the need for manual cleaning, saving time and effort. The lint is automatically washed by the spraying assembly 5 and collected in the lint collection box 4, and the lint in the lint collection box 4 is discharged with the water flow, without the need for user cleaning. The lint falling off the filter screen is prevented from being blown up by the wind during the drying process and polluting the filter screen again.

[0096] In addition, the clothes drying device further comprises a cabinet, a detection piece and a display panel. The cabinet cavity is formed in the cabinet, and the drum 61 and the front support 7 are arranged in the cabinet cavity. The cabinet comprises a front panel, which is arranged in front of the front support 7 and forms a display panel mounting opening. The detection piece is arranged in the lower section 721 of the air outlet duct and is used to detect the amount of lint in the lower section 721 of the air outlet duct. The display panel is arranged at the display panel mounting opening and is electrically connected with the detection piece. The display panel can display the amount of lint in the lower section 721 of the air outlet duct, facilitating timely cleaning of the lint in the lower section 721 of the air outlet duct. According to actual needs, the display panel can also display the temperature, flow rate and humidity of the drying airflow flowing through the lower section 721 of the air outlet duct.

[0097] Embodiment 2

[0098] Different from embodiment 1, the first cleaning support 321 has a blade structure in this embodiment. When the air flows through the first cleaning support 321, the first cleaning support 321 can rotate. In this way, the first cleaning support 321 can rotate under the action of the flowing air without the need for external motor driving, and the first cleaning piece 341 can automatically and timely clean the lint on the first filter screen 23. In addition, the second cleaning support 322 has a blade structure. When the air flows through the second cleaning support 322, the second cleaning support 322 can rotate. In this way, the second cleaning support 322 can rotate under the action of the flowing air without the need for external motor driving, and the second cleaning piece 342 can automatically and timely clean the lint on the second filter screen 24.

[0099] Embodiment 3

[0100] Different from the embodiments 1 and 2, the first cleaning support 321 and the first brush are both in a spiral shape; or,

[0101] The first cleaning support 321 and the first brush are both in a broken line shape, and the first cleaning support 321 comprises a first support section and a second support section arranged along the axial direction of the support shaft 33 in sequence; the included angle between the first support section and the axial direction of the support shaft 33 is α, the included angle between the second support section and the axial direction of the support shaft 33 is β, and α and β satisfy: α+β=180°.

[0102] Through the above two ways, the cleaning effect of the first cleaning member 341 can be improved.

[0103] Embodiment 4

[0104] On the basis of any one of the embodiments 1 to 3, the embodiment proposes that the position of the first cleaning support 321 on the cleaning main support 31 can be adjusted along the radial direction of the support shaft 33; and / or, the position of the second cleaning support 322 on the support shaft 33 can be adjusted along the axial direction of the support shaft 33; the position of the first cleaning support 321 and / or the second cleaning support 322 on the support shaft 33 can be adjusted according to actual needs, so as to improve the cleaning force of the first cleaning member 341 and the second cleaning member 342, and expand the application range of the first cleaning member 341 and the second cleaning member 342; or,

[0105] The first cleaning support 321 and the first cleaning member 341 are connected by a first elastic member; under the action of the first elastic member, the first cleaning member 341 and the first filter screen 23 are always in contact, so as to improve the cleaning effect; the second cleaning support 322 and the second cleaning member 342 are connected by a second elastic member; under the action of the second elastic member, the second cleaning member 342 and the second filter screen 24 are always in contact, so as to improve the cleaning effect.

[0106] Embodiment 5

[0107] On the basis of any one of the embodiments 1 to 4, the embodiment proposes that a detachable first dust suction box is arranged on one side or both sides of the first cleaning support 321 along the circumferential direction of the support shaft 33, and the first dust suction box is used for suction of the hair dust falling from the first filter screen 23; a detachable second dust suction box is arranged on one side or both sides of the second cleaning support 322 along the circumferential direction of the support shaft 33, and the second dust suction box is used for suction of the hair dust falling from the second filter screen 24.

[0108] Embodiment 6

[0109] Based on any one of embodiments 1 to 5, this embodiment proposes that the first filter screen frame 21 is rotatably disposed on the second mounting base 12, and the first mounting base 11 is formed with a mounting hole; the filter device further includes a knob and a transmission assembly, the knob is rotatably disposed at the mounting hole and located on the side of the first mounting base 11 away from the second mounting base 12; the knob and the first filter screen frame 21 are connected by transmission assembly.

[0110] By rotating the knob, the transmission assembly rotates the first filter frame 21 and the first filter 23 as a whole, thereby causing different circumferential parts of the first filter 23 to face the lower inlet of the air outlet duct. Depending on the degree of clogging in different circumferential parts of the first filter 23, the rotation causes the heavily clogged parts to move away from the lower inlet of the air outlet duct, while the unclogged parts move closer to it. This fully utilizes different circumferential parts of the first filter 23 for filtration, extending its service life and improving its filtration efficiency. It also facilitates the removal of lint from the first filter 23.

[0111] Specifically, the transmission assembly includes a rack, a gear, and a connecting rod. The rack is arc-shaped or ring-shaped and is coaxially arranged and connected with the first filter screen frame 21. Both the rack and the gear are rotatably mounted on the second mounting base 12, and the gear and the rack mesh. One end of the connecting rod is connected to a knob, and the other end is connected to a gear. When the knob is turned, the connecting rod drives the gear to rotate, which in turn causes the rack to drive the first filter screen frame 21 and the first filter screen 23 to rotate as a whole.

[0112] In addition, the second filter frame 22 and the first filter frame 21 can be designed to be detachably connected. The second filter frame 22 and the second filter 24 can rotate with the first filter frame. By adjusting the filtration part of the second filter 24, the filtration effect of the second filter 24 can be improved, and at the same time, it is beneficial for the shedding of lint on the second filter 24.

[0113] Example 7

[0114] like Figure 4b As shown, based on any one of embodiments 1 to 6, this embodiment proposes that a first chip discharge port 741 and a second chip discharge port 742 are formed at the bottom of the lower section 721 of the air outlet. The first chip discharge port 741 is located below the first filter screen 23, and the second chip discharge port 742 is located below the second filter screen 24.

[0115] The dust collection box 4 is located below the lower section 721 of the air outlet duct. The dust collection box 4 has a first dust collection chamber 41 and a second dust collection chamber 42 that are not connected to each other. The first dust collection chamber 41 is connected to the first dust discharge port 741 and is used to collect the lint that falls off the first filter screen 23 and is discharged through the first dust discharge port 741. The second dust collection chamber 42 is connected to the second dust discharge port 742 and is used to collect the lint that falls off the second filter screen 24 and is discharged through the second dust discharge port 742.

[0116] The first filter screen 23 and the second filter screen 24 correspond to independent chip removal openings and chip collection cavities, avoiding the problem of air path short circuit, so that the first filter screen 23 fully plays its role.

[0117] Further description is made below in view of the specific structure of the chip collection box 4. The chip collection box 4 includes a chip collection box left wall 431, a chip collection box right wall 432, and a chip collection box bottom wall 433. The chip collection box left wall 431 and the chip collection box right wall 432 are oppositely arranged, and the chip collection box bottom wall 433 connects the chip collection box left wall 431 and the chip collection box right wall 432. The chip collection box left wall 431 is formed with a chip collection box discharge opening 434, and the chip collection box bottom wall 433 is arranged obliquely from the chip collection box right wall 432 to the chip collection box left wall 431.

[0118] The inside of the chip collection box 4 is provided with a partition rib 44, which divides the inside of the chip collection box 4 into a first chip collection cavity 41 and a second chip collection cavity 42. The first chip collection cavity 41 and the second chip collection cavity 42 are both in communication with the chip collection box discharge opening 434, for discharging the swarf in the first chip collection cavity 41 and the second chip collection cavity 42.

[0119] In addition, the filtering device includes a first spraying assembly and a second spraying assembly. The first spraying assembly includes a first spraying head, which is arranged in the lower section 721 of the air outlet duct and is used for flushing the swarf falling off the first filter screen 23 into the first chip collection cavity 41.

[0120] The second spraying assembly includes a second spraying head, which is arranged in the second chip collection cavity 42 and is used for flushing the swarf out of the second chip collection cavity 42.

[0121] The first spraying head and the second spraying head can be communicated through a tee joint, share one water inlet pipe, or independently communicate with corresponding water inlet pipes, so as to enhance the spraying effect of the spraying head 51.

[0122] Further, the lower section 721 of the air outlet duct includes a lower section left wall and a lower section right wall oppositely arranged. The first spraying head 51 is arranged on the lower section left wall. Relative to the lower section left wall, the first chip removal opening 741 is closer to the lower section right wall.

[0123] The second mounting seat 12 is provided with a blocking rib 14, which is arranged around the second filter screen 24 and has a blocking rib opening 141 formed at the bottom of the blocking rib 14. The blocking rib opening 141 and the second chip removal opening 742 are in position correspondence and communication, for discharging the swarf falling off the second filter screen 24 to the second chip removal opening 742.

[0124] Further description is made below in view of the sealing structure of the chip collection box. The front support 7 is formed with a containing cavity below the lower section 721 of the air outlet duct. Alternatively, the roller 61 and the front support 7 are both arranged on the base 62, and the base 62 is formed with a containing cavity below the lower section 721 of the air outlet duct.

[0125] The dust collecting box 4 is arranged in the accommodating cavity; a labyrinth seal structure is formed between the end of the dust collecting box 4 close to the top wall of the accommodating cavity and the top wall of the accommodating cavity, and between the end of the partition rib 44 close to the top wall of the accommodating cavity and the top wall of the accommodating cavity, so as to increase the sealing effect between the dust collecting box 4 and the top wall of the accommodating cavity and the sealing effect between the partition rib 44 and the top wall of the accommodating cavity, and avoid the drying airflow flowing between the first dust collecting cavity 41 and the second dust collecting cavity 42.

[0126] Embodiment 8

[0127] As shown in Figures 3a to 6 The embodiment provides a clothes drying apparatus, which comprises a drum 61, a front support 7, and the filtering device of any one of embodiments 1 to 7; the drum 61 comprises a drum opening 611 and a drum back wall 612 arranged opposite to each other, and the drum back wall 612 is formed with a drying air inlet 613; the front support 7 is arranged in front of the drum 61, and the front support 7 is formed with a clothes taking and placing opening 71 communicating with the drum opening 611, a side wall of the clothes taking and placing opening 71 is formed with a drying air outlet 73 communicating with the clothes taking and placing opening 71, and the front support 7 is formed with an air outlet channel 72 communicating with the drying air outlet 73 below the drying air outlet 73; the air outlet channel 72 comprises an air outlet channel lower section 721, the filter screen assembly and the cleaning assembly are arranged in the air outlet channel lower section 721, the ventilation cavity 13 and the air outlet channel lower section 721 are communicated, and the filtering device is used for filtering the drying airflow in the air outlet channel lower section 721; specifically, the front support 7 comprises a support upper shell 751 and a support lower shell 752 arranged opposite to each other, the support upper shell 751 is formed with the clothes taking and placing opening 71, and the support lower shell 752 is formed with the air outlet channel 72.

[0128] Further, a front end of the air outlet channel lower section 721 is formed with an air outlet channel mounting opening 723, a top of the air outlet channel lower section 721 is formed with an air outlet channel lower section inlet, and a rear end of the air outlet channel lower section 721 is formed with an air outlet channel lower section outlet; the first mounting seat 11 is detachably arranged at the air outlet channel mounting opening 723, and the second mounting seat 12 is detachably arranged at the air outlet channel lower section outlet; the filter screen assembly and the cleaning assembly are detachably arranged in the air outlet channel lower section 721 through the air outlet channel mounting opening 723, and the filter screen assembly is arranged on the air path between the air outlet channel lower section inlet and the air outlet channel lower section outlet;

[0129] Specifically, the filter device air inlet is communicated with the lower section inlet of the air outlet, and the filter device air outlet is communicated with the lower section outlet of the air outlet; the first filter screen 23 is arranged below the lower section inlet of the air outlet, and the second filter screen 24 is arranged at the lower section outlet of the air outlet; the first filter screen 23 is used for filtering the drying airflow entering the lower section 721 of the air outlet from the lower section inlet of the air outlet, and the second filter screen 24 is used for filtering the drying airflow filtered by the first filter screen 23; the cleaning main frame 31 is arranged close to the air outlet mounting port 723; one end of the first cleaning support 321 is arranged on the cleaning main frame 31, and the other end of the first cleaning support 321 extends to the lower section outlet of the air outlet.

[0130] Further description is made below for other components of the clothes drying apparatus. The clothes drying apparatus further comprises a base 62, and the drum 61 and the front support 7 are arranged on the base 62; a debris discharge port is formed at the bottom of the lower section 721 of the air outlet, the width of the debris discharge port is less than 30 mm, and the length of the debris discharge port is less than 80 mm, so as to avoid that the drying airflow enters the debris collecting box 4 and blows the lint in the debris collecting box 4 back to the filter screen again;

[0131] The debris collecting box 4 of the filter device is arranged below the lower section 721 of the air outlet, and the debris collecting box 4 and the lower section 721 of the air outlet are communicated through the debris discharge port; the spraying assembly 5 of the filter device is arranged on the side wall of the lower section 721 of the air outlet, and the spray head 51 can spray water to the bottom of the lower section 721 of the air outlet, so as to flush the lint falling off the first filter screen 23 and the second filter screen 24 into the debris collecting box 4 through the debris discharge port; specifically, the spraying assembly 5 is arranged on the left side wall or the right side wall of the lower section 721 of the air outlet; preferably, the spraying assembly 5 is arranged on the left side wall of the lower section 721 of the air outlet.

[0132] Further, the clothes drying apparatus further comprises a cabinet 8, an air inlet shell 85 and a two-device assembly; the cabinet 8 comprises a front panel 81, a left side plate 82, a right side plate 83 and a rear back plate 84, the front panel 81 and the rear back plate 84 are arranged opposite to each other in front and back, and the left side plate 82 and the right side plate 83 are arranged opposite to each other in left and right; the front panel 81, the left side plate 82, the right side plate 83 and the rear back plate 84 jointly enclose a cabinet cavity, and the base 62, the drum 61, the front support 7, the two-device box 63 and the two devices are arranged in the cabinet cavity; the front panel 81 is formed with a panel port 811, the panel port 811 and the clothes taking and placing port 71 are located in correspondence with and are communicated with each other; the rear back plate 84 is located behind the drum 61; the air inlet shell 85 is buckled on the rear back plate 84, and the air inlet shell 85 and the rear back plate 84 enclose an air inlet 851, and the rear back plate 84 is formed with a back plate air passing port 841, the air inlet 851 and the drying air inlet 613 are communicated through the back plate air passing port 841; a rotatable drying fan 92 is arranged in the air inlet 851, and the drying fan 92 is used for providing power to the drying airflow;

[0133] The two-vessel assembly comprises a two-vessel box 63, an evaporator 651 and a condenser 652, the two-vessel box 63 is formed with a box passage 64, the evaporator 651 and the condenser 652 are arranged in the box passage 64, the evaporator 651 is used for dehumidifying the drying airflow, and the condenser 652 is used for heating the drying airflow;

[0134] The air outlet duct 72 further comprises an air outlet duct upper section 722 located above the air outlet duct lower section 721, the air outlet duct upper section 722 is communicated with the drying air outlet 73 and the air outlet duct lower section inlet, and the air outlet duct upper section 722 and the air outlet duct lower section 721 constitute the air outlet duct 72.

[0135] The air outlet duct 72, the box passage 64, the air inlet duct 851 and the drum 61 are sequentially communicated to form a drying circuit, and the drying airflow can circulate in the drying circuit; under the action of the drying fan blade 92, the drying airflow can circulate in the drying circuit; when the drying airflow flows through the drum 61, the drying airflow exchanges heat with the clothes in the drum 61 and takes away the moisture on the clothes; when the drying airflow flows through the evaporator 651, the evaporator 651 dehumidifies the drying airflow, and when the drying airflow flows through the condenser 652, the condenser 652 heats the drying airflow.

[0136] The above specifically shows and describes the exemplary embodiments of the present disclosure. It should be understood that the present disclosure is not limited to the detailed structure, arrangement or implementation method described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent arrangements within the spirit and scope of the appended claims.

Claims

1. A clothes drying apparatus, characterized by, The clothes drying device comprises a drum (61), a front support (7) and a filtering device; the front support (7) is arranged in front of the drum (61); the front support (7) is formed with an air outlet channel (72) for discharging the drying airflow in the drum (61); the air outlet channel (72) comprises an air outlet channel lower section (721), the top of the air outlet channel lower section (721) is formed with an air outlet channel lower section inlet, and the rear end is formed with an air outlet channel lower section outlet; the filtering device comprises a filter screen assembly, a cleaning assembly and a scrap collecting box (4); The filter screen assembly is fixedly arranged in the air outlet channel lower section (721), and the filter screen assembly comprises a first filter screen (23) and a second filter screen (24); the first filter screen (23) is arranged below the air outlet channel lower section inlet, and the second filter screen (24) is arranged at the air outlet channel lower section outlet; the first filter screen (23) is used for filtering the air in the air outlet channel lower section (721), and the second filter screen (24) is used for filtering the air filtered by the first filter screen (23); The cleaning assembly is movably arranged in the air outlet channel lower section (721) and is used for cleaning the lint on the first filter screen (23) and the second filter screen (24); The bottom of the air outlet channel lower section (721) is formed with a first lint discharge port (741) and a second lint discharge port (742); the first lint discharge port (741) is located below the first filter screen (23), and the second lint discharge port (742) is located below the second filter screen (24); The scrap collecting box (4) is arranged below the air outlet channel lower section (721), and the scrap collecting box (4) is formed with a first scrap collecting cavity (41) and a second scrap collecting cavity (42) which are not communicated with each other; the first scrap collecting cavity (41) and the first lint discharge port (741) are communicated, and are used for collecting the lint falling from the first filter screen (23); the second scrap collecting cavity (42) and the second lint discharge port (742) are communicated, and are used for collecting the lint falling from the second filter screen (24).

2. The clothes drying apparatus according to claim 1, characterized by, The scrap collecting box (4) comprises a scrap collecting box left wall (431), a scrap collecting box right wall (432) and a scrap collecting box bottom wall (433); the scrap collecting box left wall (431) and the scrap collecting box right wall (432) are arranged opposite to each other, and the scrap collecting box bottom wall (433) connects the scrap collecting box left wall (431) and the scrap collecting box right wall (432); the scrap collecting box left wall (431) is formed with a scrap collecting box discharge port (434), and the scrap collecting box bottom wall (433) is arranged obliquely from the scrap collecting box right wall (432) to the scrap collecting box left wall (431); The scrap collecting box (4) is provided with a partition rib (44) inside; the partition rib (44) divides the inside of the scrap collecting box (4) into the first scrap collecting cavity (41) and the second scrap collecting cavity (42); the first scrap collecting cavity (41) and the second scrap collecting cavity (42) are both communicated with the scrap collecting box discharge port (434) and are used for discharging the lint in the first scrap collecting cavity (41) and the second scrap collecting cavity (42).

3. The clothes drying apparatus according to claim 2, characterized in that, The filtering device comprises a first spraying assembly and a second spraying assembly, the first spraying assembly comprises a first spraying head, the first spraying head is arranged in the lower section of the air outlet channel (721) and is used for flushing the lint falling off the first filter screen (23) into the first lint collecting cavity (41); The second spraying assembly comprises a second spraying head, the second spraying head is arranged in the second lint collecting cavity (42) and is used for flushing the lint in the second lint collecting cavity (42) out.

4. The clothes drying apparatus according to claim 3, characterized in that, The lower section of the air outlet channel (721) comprises a left wall and a right wall arranged oppositely; the first spraying head (51) is arranged on the left wall of the lower section of the air outlet channel; the first lint outlet (741) is closer to the right wall of the lower section of the air outlet channel relative to the left wall.

5. The clothes drying apparatus according to claim 2, characterized in that, The front support (7) is formed with a receiving cavity below the lower section of the air outlet channel (721); or the clothes drying device further comprises a base (62), the drum (61) and the front support (7) are arranged on the base (62), and the base (62) is formed with a receiving cavity below the lower section of the air outlet channel (721); The lint collecting box (4) is arranged in the receiving cavity; a labyrinth seal structure is formed between one end of the lint collecting box (4) close to the top wall of the receiving cavity and the top wall of the receiving cavity, and between one end of the partition rib (44) close to the top wall of the receiving cavity and the top wall of the receiving cavity. 6.The laundry drying apparatus of claim 1, wherein The first filter screen (23) is cylindrically or arcuately arranged, and the axial direction of the first filter screen (23) is the front-rear direction; the extension direction of the first lint outlet (741) is parallel to the axial direction of the first filter screen (23); The second filter screen (24) is a circular filter screen, the second filter screen (24) is arranged at one end of the axial direction of the first filter screen (23) and coaxially with the first filter screen (23); a blocking rib (14) is arranged around the second filter screen (24), and a blocking rib opening (141) is formed at the bottom of the blocking rib (14); the blocking rib opening (141) and the second lint outlet (742) are located in correspondence and are communicated, and are used for discharging the lint falling off the second filter screen (24) to the second lint outlet (742). 7.The laundry drying apparatus of claim 6, wherein, The cleaning assembly comprises a cleaning frame, a first cleaning member (341) and a second cleaning member (342), the cleaning frame is rotatably arranged in the lower section of the air outlet channel (721); the first cleaning member (341) and the second cleaning member (342) are arranged on the cleaning frame, the first cleaning member (341) can clean the first filter screen (23) when the cleaning frame rotates, and the second cleaning member (342) can clean the second filter screen (24) when the cleaning frame rotates. 8.The laundry drying apparatus of claim 7, wherein, The front end of the lower section of the air outlet channel (721) is formed with an air outlet channel mounting opening (723); the filtering device is detachably arranged in the lower section of the air outlet channel (721) through the air outlet channel mounting opening (723). The cleaning frame comprises a cleaning main frame (31), a first cleaning support (321), a support shaft (33) and a second cleaning support (322), the cleaning main frame (31) is arranged close to the air outlet (723); one end of the first cleaning support (321) is arranged on the cleaning main frame (31) and the other end of the first cleaning support (321) extends to the lower outlet of the air outlet; the first cleaning support (321) is arranged on the inner side or the outer side of the first filter screen (23), the first cleaning support (321) is provided with the first cleaning element (341); when the first cleaning support (321) rotates with the cleaning main frame (31), the first cleaning element (341) can clean the first filter screen (23); one end of the support shaft (33) is arranged on the cleaning main frame (31), the other end of the support shaft (33) is provided with the second cleaning support (322), the second cleaning support (322) is provided with the second cleaning element (342); the support shaft (33) and the first filter screen (23) are coaxially arranged and located on the inner side of the first filter screen (23); when the second cleaning support (322) rotates with the cleaning main frame (31), the second cleaning element (342) can clean the second filter screen (24); The first cleaning element (341) and the second cleaning element (342) are both brushes. 9.The clothes drying apparatus of claim 8, wherein, The filter device further comprises a mounting seat assembly, the mounting seat assembly comprises a first mounting seat (11) and a second mounting seat (12) arranged at intervals, the first mounting seat (11) is arranged at the air outlet mounting port (723); the first mounting seat (11) is formed with a shaft hole (111), the shaft hole (111) and the first filter screen (23) are coaxially arranged; the second mounting seat (12) is arranged at the lower outlet of the air outlet and the second mounting seat (12) is formed with a ventilation port, the ventilation port is communicated with the lower outlet of the air outlet; The cleaning assembly further comprises a driving motor (35), the driving motor (35) is arranged on the first mounting seat (11) and located on the side away from the second mounting seat (12), the cleaning main frame (31) is rotatably arranged on the first mounting seat (11) and located on the side close to the second mounting seat (12); the output shaft of the driving motor (35) penetrates through the shaft hole (111) and is drivingly connected with the cleaning main frame (31); The filter screen assembly further comprises a first filter screen frame (21) and a second filter screen frame (22), the first filter screen frame (21) is arranged on the second mounting seat (12), and the first filter screen frame (21) is in a cylindrical shape, the first filter screen (23) covers the outer periphery of the first filter screen frame (21); the second filter screen frame (22) is arranged at the ventilation port, the second filter screen frame (22) is in a planar structure, and the second filter screen (24) covers the second filter screen frame (22). 10.The laundry drying apparatus of claim 9, wherein, The first filter frame (21) is rotatably arranged on the second mounting base (12), and the first mounting base (11) is formed with a mounting hole; The filter device further comprises a knob and a transmission assembly, the knob is rotatably arranged at the mounting hole and located on the side of the first mounting base (11) away from the second mounting base (12); the knob and the first filter frame (21) are drivingly connected through the transmission assembly; By rotating the knob, the transmission assembly rotates the first filter frame (21) and the first filter screen (23) as a whole, so that the circumferential different parts of the first filter screen (23) can be directed to the lower section inlet of the air outlet. 11.The laundry drying apparatus of claim 10, wherein, The transmission assembly comprises a rack, a gear and a connecting rod, the rack is in a circular arc shape or a circular ring shape, the rack and the first filter frame (21) are coaxially arranged and connected together; the rack and the gear are rotatably arranged on the second mounting base (12), and the gear and the rack are engaged; one end of the connecting rod is connected with the knob, and the other end is connected with the gear; When the knob rotates, the connecting rod rotates the gear, and then the rack rotates the first filter frame (21) and the first filter screen (23) as a whole. 12.The laundry drying apparatus of any one of claims 1 to 11, wherein, The clothes drying device further comprises a base (62), a back plate (84), an air inlet shell (85) and a two-device assembly; the drum (61), the front support (7) and the back plate (84) are arranged on the base (62), and the back plate (84) is located behind the drum (61); the air inlet shell (85) is buckled on the back plate (84), and the air inlet shell (85) and the back plate (84) enclose an air inlet (851); a rotatable drying fan blade (92) is arranged in the air inlet (851), and the drying fan blade (92) is used to provide power to the drying airflow; The two-device assembly comprises a two-device box (63), an evaporator (651) and a condenser (652), the two-device box (63) is formed with a box channel (64); the evaporator (651) and the condenser (652) are arranged in the box channel (64), the evaporator (651) is used to dehumidify the drying airflow, and the condenser (652) is used to heat the drying airflow; The front support (7) is formed with a clothes taking and placing opening (71), the clothes taking and placing opening (71) corresponds to the drum opening (611) of the drum (61), and the air outlet (72) is located below the clothes taking and placing opening (71); the air outlet (72) further comprises an upper section (722) of the air outlet, the upper section (722) of the air outlet is located above the lower section (721) of the air outlet, the upper section (722) of the air outlet communicates the clothes taking and placing opening (71) and the lower section inlet of the air outlet, and the upper section (722) of the air outlet and the lower section (721) of the air outlet constitute the air outlet (72); The air outlet (72), the box channel (64), the air inlet (851) and the drum (61) are sequentially communicated to form a drying loop, and the drying airflow can circulate in the drying loop.

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