Washing and drying integrated equipment

Abstract

The invention relates to the technical field of clothes treatment equipment, in particular to washing and drying integrated equipment, and aims to solve the problems of high cost and waste of water resources in thread cleaning of an existing washing and drying integrated machine. In order to achieve the purpose, the washing and drying integrated equipment comprises an inner cylinder, an outer cylinder, a drying air channel communicated with the outer cylinder and a thread scrap filtering and cleaning device arranged in the drying air channel, and the thread scrap filtering and cleaning device is constructed to collect thread scraps on the thread scrap filtering and cleaning device when the washing and drying integrated equipment is in a drying work state. When the washing and drying integrated equipment is in washing work, washing water passes through the washing water flowing through the outer barrel, so that thread scraps fall off from the thread scrap filtering and cleaning device and are discharged out of the washing and drying integrated equipment along with the washing water, and the thread scraps can be cleaned only by utilizing the clothes washing and drying process of the washing and drying integrated equipment; an additional spraying device is not needed, so that the production cost of the washing and drying integrated equipment is reduced, and meanwhile, water resources are saved.

Description

Technical Field

[0001] The present invention belongs to the technical field of clothing processing equipment, and in particular relates to a washing and drying integrated equipment. Background Art

[0002] With the development of technology, more and more integrated washing and drying equipment have entered households. However, when the washing and drying machine is drying clothes, the friction between the clothes and the inner drum of the washing and drying machine produces lint, which gradually accumulates on the air duct and the components arranged inside the air duct, reducing the ventilation volume inside the air duct, thereby reducing the drying efficiency of the washing and drying machine.

[0003] In order to prevent the accumulation of wire scraps on the components inside the air duct, a filter is usually set on the upstream side of the components inside the air duct to collect the wire scraps, and a spray device is set near the filter to spray and clean the wire scraps on the filter through an external spray water channel. Due to the addition of water channels and spray rods, the cost of cleaning the wire scraps is high; cleaning the wire scraps on the filter through the spray device requires additional water and also causes a waste of water resources.

[0004] Accordingly, the art needs a new technical solution to solve the above problems. Summary of the invention

[0005] In order to solve the above problems in the prior art, that is, to solve the problems of high cost and waste of water resources in cleaning wire scraps by setting a filter screen and a spray device in the air duct in the prior art.

[0006] The present invention provides a washing and drying device, which includes an inner drum and an outer drum, and a drying air duct connected to the outer drum. The washing and drying device also includes: a lint filtering and cleaning device, which is arranged inside the drying air duct and is configured to collect the lint on the lint filtering and cleaning device when the washing and drying device is in drying operation, and is also configured to cause the lint to fall off the lint filtering and cleaning device and be discharged from the washing and drying device along with the washing water when the washing and drying device is in washing operation.

[0007] In the case of adopting the above technical solution, a lint filter and cleaning device is provided inside the drying air duct of the washer-dryer of the present invention. The lint filter and cleaning device is configured to collect lint passing through the drying air duct when the washer-dryer is in drying operation, so as to collect the lint on the lint filter and cleaning device. The lint filter and cleaning device is also configured to cause the lint to fall off from the lint filter under the action of the washing water surging inside the outer drum when the washer-dryer is in washing operation, so that when the washer-dryer is draining, the lint is discharged from the washer-dryer along with the washing water. In this way, the lint filter and cleaning device collects lint blown into the air duct when the washer-dryer is in drying operation, and cleans the lint attached to the lint filter by the washing water surging inside the outer drum when the washer-dryer is in washing operation, so that when the washer-dryer is draining, the lint is discharged from the washer-dryer along with the washing water. Through the above-mentioned lint filtering and cleaning process, the present invention can clean lint by utilizing the washing and drying process of the integrated washer-dryer itself, without the need for an additional spraying device. This reduces the production cost of the integrated washer-dryer, saves water resources, and improves user satisfaction.

[0008] In the preferred technical solution of the above-mentioned integrated washer-dryer, the lint filtering and cleaning device comprises:

[0009] a filter portion configured to collect the lint in the filter portion when the washer-dryer is in drying operation; and

[0010] The cleaning part is configured to clean the lint on the filter part under the action of the washing water when the washer-dryer is in washing operation, so that the lint falls off the filter part.

[0011] In the preferred technical solution of the above-mentioned washing and drying device, the filter unit includes:

[0012] A first filter screen: it is arranged at the air inlet of the drying air duct, and the first filter screen is used to pass the wind or the washing water; and

[0013] The second filter screen is arranged inside the drying air duct, and is used to collect the wire scraps;

[0014] The cleaning part includes cleaning particles arranged between the first filter screen and the second filter screen, and the cleaning particles are used to clean the wire scraps.

[0015] In the case of adopting the above technical solution, the filtering part of the lint filtering and cleaning device includes a first filter screen arranged at the air inlet of the drying air duct and a second filter screen arranged inside the air duct, and the cleaning part of the lint filtering and cleaning device includes cleaning particles arranged between the first filter screen and the second filter screen, so that when the washing and drying device is in the drying operation, the first filter screen and the second filter screen collect the lint entering the drying air duct, and when the washing and drying device is in the washing operation, the cleaning particles clean the lint on the first filter screen and the second filter screen under the action of the agitated washing water, so that the lint is discharged from the washing and drying device along with the outflow of the washing water when the washing and drying device is drained, so that the washing and drying device of the present invention can automatically collect and clean the lint by its own operation, without the need to set up an additional structure for cleaning the filter screen, thereby reducing the production cost of the washing and drying device. It also saves water resources and improves user satisfaction.

[0016] In addition, the present invention sets a two-layer filtering structure of a first filter and a second filter in the drying air duct, so that the present invention has a better lint collection ability, thereby reducing the risk of lint accumulation in the drying air duct due to long-term use of the washing and drying equipment.

[0017] In the preferred technical solution of the above-mentioned washer-dryer, the density of the cleaning particles is less than that of water.

[0018] When adopting the above-mentioned technical solution, the cleaning particles are set to particles smaller than water, so that when the washing and drying device washes clothes, the cleaning particles are more easily driven by the washing water in the outer drum, so that the cleaning particles have a greater impact force to collide with the first filter and the second filter under the action of the buoyancy of the agitated washing water inside the outer drum, thereby making it easier for the lint on the first filter and the second filter to fall off, thereby making the lint filtering and cleaning device of the present invention have a better cleaning effect.

[0019] In a preferred technical solution of the above-mentioned washer-dryer, the size of the cleaning particles is larger than the pore size of the first filter and the pore size of the second filter, so that the cleaning particles are always located between the first filter and the second filter.

[0020] In the case of adopting the above technical solution, the size of the cleaning particles is constructed to be larger than the aperture of the first filter and the second filter, so that the cleaning particles can be confined between the first filter and the second filter without additionally setting a fixed structure to confine the cleaning particles, thereby making the cleaning device of the present invention have a simpler structure and increasing the freedom of the cleaning particles. Moreover, in this way, whether the washer-dryer is in drying operation or washing operation, the cleaning particles are always located between the first filter and the second filter, so that the number of cleaning particles between the first filter and the second filter will not decrease, so that when the washer-dryer is in washing operation, the cleaning particles always have a constant cleaning effect on the first filter and the second filter under the action of the agitated washing water.

[0021] In a preferred technical solution of the above-mentioned washer-dryer, the aperture of the second filter is smaller than the aperture of the first filter, so that most of the lint can be collected on the second filter.

[0022] When the above technical solution is adopted, the aperture of the second filter is smaller than that of the first filter, so that the lint can be collected on the second filter through the first filter. In this way, the wind resistance of the lint filtering and cleaning device that collects lint through the second filter and collects lint through the first filter and the second filter at the same time is smaller, so that the lint filtering and cleaning device can collect lint while making the drying air duct have smaller wind resistance.

[0023] In a preferred technical solution of the above-mentioned washer-dryer, the second filter screen is higher than the first filter screen, so that the cleaning particles are mainly used to clean the lint on the second filter screen.

[0024] When the above technical solution is adopted, the cleaning particles can clean the wire scraps on the second filter screen more concentratedly under the action of the buoyancy of water, so that the cleaning particles have a better cleaning effect on the second filter screen.

[0025] In the preferred technical solution of the above-mentioned washer-dryer, the second filter is lower than the wall of the inner drum.

[0026] When adopting the above technical solution, the position of the second filter is lower than the wall of the drum, so that when the washer-dryer is in washing operation, the liquid level of the washing water inside the outer shell is higher than the second filter, so that the cleaning particles collide with the second filter under the buoyancy of the water, thereby achieving the effect of cleaning the lint on the second filter.

[0027] In the preferred technical solution of the above-mentioned integrated washer-dryer, the lint filtering and cleaning device further comprises:

[0028] It is arranged between the first filter screen and the second filter screen, and is used to discharge the wire scraps and the washing water; and

[0029] A grille is arranged at the drain port, and the aperture size of the grille is smaller than the size of the cleaning particles so as to intercept the cleaning particles inside the wire scrap filtering and cleaning device.

[0030] In the preferred technical solution of the above-mentioned integrated washer-dryer, the bottom of the drying air duct is lower than the bottom of the outer drum; or

[0031] The bottom of the drying air duct is flush with the bottom of the outer cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The preferred embodiment of the present invention is described below by taking a drum washing machine as an example and in conjunction with the accompanying drawings, in which:

[0033] Figure 1 It is a schematic diagram of a drum washing machine in a drying operation according to an embodiment of the present invention.

[0034] Figure 2 yes Figure 1 A partial enlarged view of area A.

[0035] Figure 3 It is a schematic diagram of a drum washing machine in a drying operation according to an embodiment of the present invention.

[0036] Figure 4 It is a schematic diagram of a drum washing machine in a drying operation according to another embodiment of the present invention.

[0037] List of reference numerals:

[0038] 1. Drum washing machine; 11. Outer shell; 12. Outer drum; 13. Inner drum; 14. Drying air duct; 141. Air inlet; 15. Lint filtering and cleaning device; 151. Filtering unit; 1511. First filter; 1512. Second filter; 152. Cleaning unit; 1521. Cleaning particles; 153. Drain outlet; 154. Grille; 16. Heating device; 17. Fan. DETAILED DESCRIPTION

[0039] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not used to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios. For example, although this embodiment is described in conjunction with a drum washing machine, it is obvious that it can also be applied to other integrated washing and drying devices with washing and drying functions, such as a pulsator washing machine and a shoe washing machine.

[0040] It should be noted that in the description of the present invention, the terms "middle", "upper", "lower", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Figure 1 It is a schematic diagram of a drum washing machine in a drying operation according to an embodiment of the present invention. Figure 2 yes Figure 1 A partial enlarged view of area A. Figure 3 It is a schematic diagram of a drum washing machine in a washing operation according to an embodiment of the present invention. Figure 4 It is a schematic diagram of a drum washing machine in another embodiment of the present invention in washing operation.

[0043] like Figure 1 See also Figure 2-Figure 4 In order to solve the problem that the existing drum washing machine 1 needs to use a spray device for cleaning the thread scraps, which results in a complicated structure of the drum washing machine 1 and wastes water resources. The present invention provides a drum washing machine 1, which includes a shell 11, an outer drum 12 arranged inside the shell 11, an inner drum 13 arranged inside the outer drum 12, and a drying duct 14 arranged outside the outer drum 12 and connected to the outer drum 12. The drum washing machine 1 also includes a thread scrap filtering and cleaning device 15, which is arranged inside the drying duct 14 and is configured to collect thread scraps on the thread scrap filtering and cleaning device when the drum washing machine 1 is in drying operation, and is also configured to make the thread scraps fall off from the thread scrap filtering and cleaning device 15 under the action of washing water inside the outer drum 12 when the drum washing machine 1 is in washing operation, so that when the drum washing machine 1 is drained, the thread scraps are discharged to the outside of the drum washing machine 1 along with the washing water.

[0044] The lint filtering and cleaning device 15 of the present invention is constructed to collect lint when the drum washing machine 1 dries clothes, and to clean lint when the drum washing machine 1 washes clothes. Therefore, the drum washing machine 1 of the present invention does not require additional lint cleaning work during the process of drying and washing clothes, and can clean lint, thereby saving water resources and improving user satisfaction.

[0045] In addition, the inventors also found in the process of realizing the present invention that the drum washing machine 1 in the prior art needs to be provided with a filter in the drying air duct 14 and a spray device for cleaning the wire scraps on the filter, but the spray device provided inside the drying air duct 14 will cause wind resistance, which will reduce the air volume of the drying air duct 14 and reduce the drying efficiency of the drum washing machine 1. Moreover, the spray device also needs to be provided with an additional water channel and a spray power part, such as a water pump, so that the drum washing machine 1 has a complex structure and a high production cost, and clean water is also needed when cleaning the wire scraps on the filter, resulting in a waste of water resources.

[0046] The drum washing machine 1 of the present invention only needs to be provided with a lint filtering and cleaning device 15 for cleaning lint inside the drying air duct 14, and the drum washing machine 1 of the present invention does not need to be provided with an additional water channel to clean the lint on the lint filtering and cleaning device 15. The lint cleaning can be achieved by utilizing the drying and washing work of the drum washing machine 1 itself. Compared with the prior art, the lint filtering and cleaning device 15 of the present invention has a simple structure, can save water resources, and improves user satisfaction.

[0047] As a possible implementation, Figure 1 See also Figure 2-Figure 4 The lint filtering and cleaning device 15 comprises: a filter 151 and a cleaning part 152. The filter 151 is configured to collect lint entering the drying air duct 14 when the drum washing machine 1 is in the drying operation. The cleaning part 152 is arranged inside the filter 151. The cleaning part 152 is configured to clean the lint on the filter 151 under the action of washing water when the drum washing machine 1 is in the washing operation, so that the lint falls off the filter 151.

[0048] As a possible implementation, Figure 1 See also Figure 2-Figure 4The filter part 151 includes a first filter 1511 and a second filter 1512 for collecting lint. The first filter 1511 is arranged at the air inlet 141 of the drying air duct 14. The second filter 1512 is arranged inside the drying air duct 14. The cleaning part 152 includes cleaning particles 1521 arranged between the first filter 1511 and the second filter 1512. In this way, when the drum washing machine 1 dries clothes, the lint is collected by the first filter 1511 and the second filter 1512, and when the drum washing machine 1 washes clothes, the cleaning particles 1521 arranged between the first filter 1511 and the second filter 1512 clean the lint on the first filter 1511 and the second filter 1512, so that the lint filtering and cleaning device 15 of the present invention has a simple structure, which reduces the production cost of the drum washing machine 1.

[0049] As a possible implementation, Figure 1 See also Figure 2-Figure 4 The second filter 1512 is arranged upstream of the fan 17 and the heating device 16, so that when the drum washing machine 1 is in drying operation, the lint follows the wind into the drying air duct 14 and is first collected by the first filter 1511 and the second filter 1512, thereby reducing the risk of lint adhering to the fan 17 and the heating device 16, thereby ensuring that the drum washing machine 1 has a high drying efficiency for a long time.

[0050] As a possible implementation, Figure 2 As shown, the density of the cleaning particles 1521 is less than that of water, so that when the drum washing machine 1 is in the washing operation, the cleaning particles 1521 float up under the action of the buoyancy of the washing water, and collide with the first filter 1511 and the second filter 1512 under the action of the agitation of the washing water inside the outer drum 12, so that the lint collected on the first filter 1511 and the second filter 1512 falls off. By arranging the cleaning particles 1521 with a density less than that of water between the first filter 1511 and the second filter 1512, the present invention utilizes the buoyancy of the washing water and the agitation force of the washing water during the washing operation, so that the cleaning particles 1521 continuously collide with the first filter 1511 and the second filter 1512, so that the lint filtering device automatically cleans the lint on the first filter 1511 and the second filter 1512 during the washing operation. So that the drum washing machine 1 does not need to be equipped with an additional spray device to clean the lint on the first filter 1511 and the second filter 1512, saving water resources.

[0051] Of course, in other embodiments, the density of the cleaning particles 1521 can also be equal to the density of water or slightly greater than the density of water, as long as the cleaning particles 1521 can collide with the first filter 1511 and the second filter 1512 under the action of the agitation of the washing water to cause the lint on the first filter 1511 and the second filter 1512 to fall off.

[0052] As a possible implementation, Figure 1 See also Figure 2-Figure 4 The size of the cleaning particles 1521 is larger than the aperture of the first filter screen 1511 and the second filter screen 1512 , so that the cleaning particles 1521 are always located between the first filter screen 1511 and the second filter screen 1512 .

[0053] Of course, in other embodiments, the size of the cleaning particles 1521 may also be smaller than the aperture of the first filter 1511 and / or the second filter 1512. In this case, the cleaning particles 1521 may be fixed between the first filter 1511 and the second filter 1512 by binding wires to prevent the cleaning particles 1521 from passing through the first filter 1511 and / or the second filter 1512 and being discharged from the outside of the drum washing machine 1.

[0054] As a possible implementation, Figure 1 See also Figure 2-Figure 4 , the aperture of the second filter 1512 is smaller than the aperture of the first filter 1511, so that most of the lint entering the drying air duct 14 is collected on the second filter 1512. Preferably, in the specific embodiment of the present invention, the aperture size of the first filter 1511 is configured to be slightly smaller than the minimum outer diameter of the cleaning particles 1521, so that the cleaning particles 1521 are restricted between the first filter 1511 and the second filter 1512, and the lint filtering and cleaning device 15 has the minimum wind resistance, so that the drum washing machine 1 has a good drying efficiency. In addition, the inventors also found in the process of realizing the present invention that even if the aperture size of the second filter 1512 of the present invention is set to the same as the aperture size of the filter and the spray device set in the air duct in the prior art, the wind resistance caused by the lint filtering and cleaning device 15 of the present invention to the drying air duct 14 is also smaller than the wind resistance of the filter and the spray device set in the air duct in the prior art. In this way, compared with the prior art, the present invention makes the structure of the lint filtering and cleaning device 15 of the drum washing machine 1 of the present invention simple, and can also reduce the wind resistance caused to the drying air duct 14. While reducing the cost of the drum washing machine 1 and saving water resources, the drum washing machine 1 also has better drying efficiency than the drum washing machine in the prior art that has a filter and a spray device in the air duct.

[0055] Of course, in other embodiments, the aperture of the second filter 1512 may also be greater than or equal to the aperture of the first filter 1511 , so that most of the lint entering the drying air duct 14 can be collected on the first filter 1511 or the first filter 1511 and the second filter 1512 .

[0056] As a possible implementation, Figure 1 See also Figure 2 and Figure 3The first filter 1511 is located at the lowest point of the drying air duct 14, and the second filter 1512 is located higher than the first filter 1511, so that the cleaning particles 1521 float to the second filter 1512 under the buoyancy of the washing water, so that when the drum washing machine 1 is in the washing operation, most of the cleaning particles 1521 collide with the second filter 1512 under the action of the agitated washing water, so that the cleaning particles 1521 are mainly used to clean the lint on the second filter 1512, so as to increase the collision probability of the cleaning particles 1521 and the second filter 1512, thereby improving the cleaning efficiency of the cleaning particles 1521 on the lint on the second filter 1512.

[0057] As a possible implementation, Figure 1 See also Figure 2-Figure 4 The position of the second filter 1512 is lower than the wall of the inner drum 13. In this way, when the drum washing machine 1 is in washing operation, the liquid level of the washing water inside the outer drum 12 will submerge the second filter 1512, so that the cleaning particles 1521 will contact with the second filter 1512 under the action of the buoyancy of the washing water. On this basis, the cleaning particles 1521 will continuously collide and rub with the second filter 1512 under the action of the agitated washing water, so as to quickly clean the lint collected on the second filter 1512.

[0058] As a possible implementation, Figure 1 See also Figure 2-Figure 4 , the lint filtering device 15 also includes: a drain port 153 and a grille 154154. The drain port 153 is arranged at the bottom of the drying air duct 14, and the drain port 153 is arranged between the first filter 1511 and the second filter 1512. The grille 154 is arranged at the drain port 153, and the aperture size of the grille 154 is smaller than the size of the cleaning particles 1521, so as to intercept the cleaning particles 1521 inside the air duct. Moreover, since the drain port 153 is arranged at the bottom of the drying air duct 14 and between the first filter 1511 and the second filter 1512, when the drum washing machine 1 is drained, the lint attached to the first filter 1511 and the lint falling off the second filter 1512 are discharged from the drain port 153 driven by the discharged washing water. The risk of the wire scraps falling off the second filter 1512 adhering to the first filter 1511 when discharged from the outer cylinder 12 is reduced, the cleanliness of the wire scraps cleaning device 15 is improved, and the risk of the wire scraps accumulating on the wire scraps filtering and cleaning device 15 is further reduced.

[0059] As a possible implementation, Figure 1 See also Figure 2 and Figure 3The bottom of the drying duct 14 is lower than the bottom of the outer drum 12, or the bottom of the drying duct 14 is flush with the bottom of the outer drum 12, so that when the drum washing machine 1 is draining, the lint can be completely discharged from the drain port 153 at the bottom of the drying duct 14 along with the discharged washing water, reducing the risk of lint remaining at the bottom of the drying duct 14.

[0060] As a possible implementation, Figure 4 As shown, the first filter 1511 and the second filter 1512 have the same height. At this time, the drying air duct 14 between the first filter 1511 and the second filter 1512 is a "U"-shaped pipeline. When the drum washing machine 1 is in the drying operation, the cleaning particles are located at the lowest position of the "U"-shaped pipeline under the action of their own gravity, so that the cleaning particles 1521 will not affect the ventilation effect of the drying air duct 14, thereby ensuring the drying efficiency of the drum washing machine 1. When the drum washing machine 1 is processing the washing operation, the cleaning particles 1521 can float roughly evenly below the first filter 1511 and the second filter 1512 under the action of the "U"-shaped pipeline, so that the cleaning particles 1521 have roughly the same cleaning efficiency on the first filter 1511 and the second filter 1512. Moreover, the lint that falls off the first filter 1511 and the second filter 1512 can fall to the bottom of the "U"-shaped pipe and will not be brought into the outer drum 12 by the agitated washing water. In this way, the lint can be better discharged from the drain port 153 located at the bottom of the "U"-shaped pipe.

[0061] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims of the present invention, any one of the claimed embodiments may be used in any combination.

[0062] So far, the technical solutions of the present invention have been described in conjunction with the optional implementation modes shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific implementation modes. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A washing and drying device, characterized in that: The integrated washing and drying device comprises an inner drum and an outer drum, and a drying air duct connected to the outer drum, and the integrated washing and drying device further comprises: The lint filtering and cleaning device is arranged inside the drying air duct and is configured to collect the lint on the lint filtering and cleaning device when the washer-dryer is in drying operation. It is also configured to cause the lint to fall off the lint filtering and cleaning device and be discharged from the washer-dryer along with the washing water when the washer-dryer is in washing operation.

2. The washing and drying device according to claim 1, characterized in that: The wire scrap filtering and cleaning device comprises: a filter portion configured to collect the lint in the filter portion when the washer-dryer is in drying operation; and The cleaning part is configured to clean the lint on the filter part under the action of the washing water when the washer-dryer is in washing operation, so that the lint falls off the filter part.

3. The washing and drying device according to claim 2, characterized in that: The filter unit comprises: A first filter screen: it is arranged at the air inlet of the drying air duct, and the first filter screen is used to pass the wind or the washing water; and The second filter screen is arranged inside the drying air duct, and is used to collect the wire scraps; The cleaning part includes cleaning particles arranged between the first filter screen and the second filter screen, and the cleaning particles are used to clean the wire scraps.

4. The washing and drying device according to claim 3, characterized in that: The cleaning particles have a density lower than that of water.

5. The washing and drying device according to claim 4, characterized in that: The size of the cleaning particles is larger than the aperture of the first filter screen and the aperture of the second filter screen, so that the cleaning particles are always located between the first filter screen and the second filter screen.

6. The integrated washer-dryer according to claim 4, characterized in that: The aperture of the second filter screen is smaller than that of the first filter screen, so that most of the wire scraps are collected on the second filter screen.

7. The integrated washer-dryer according to claim 6, characterized in that: The second filter screen is higher than the first filter screen, so that the cleaning particles are mainly used to clean the wire scraps on the second filter screen.

8. The integrated washer-dryer according to claim 7, characterized in that: The second filter screen is lower than the cylinder wall of the inner cylinder.

9. The integrated washer-dryer according to any one of claims 4 to 8, characterized in that: The wire scrap filtering and cleaning device also includes: a drain port, which is disposed between the first filter screen and the second filter screen and is used to discharge the lint and the washing water; and A grille is arranged at the drain port, and the aperture size of the grille is smaller than the size of the cleaning particles so as to intercept the cleaning particles inside the wire scrap filtering and cleaning device.

10. The integrated washer-dryer according to claim 9, characterized in that: The bottom of the drying air duct is lower than the bottom of the outer cylinder; or The bottom of the drying air duct is flush with the bottom of the outer cylinder.

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