Clothes treatment apparatus and control method therefor

Abstract

A clothes treatment apparatus, comprising a clothes holding device (1100), a drying device (2000), a water supply assembly (3000), an air output pipe (1300) and a filter screen (601), wherein the air output pipe (1300) is configured to guide an airflow from the clothes holding device (1100) to the drying device (2000); the filter screen (601) is arranged between an air outlet of the clothes holding device (1100) and an air inlet of the drying device (2000) for filtering the airflow; the water supply assembly (3000) comprises at least a first water supply pipeline and a second water supply pipeline; the first water supply pipeline supplies water to the clothes holding device (1100) via a detergent box, and the second water supply pipeline supplies water to the clothes holding device (1100) via the filter screen (601); and both the first water supply pipeline and the second water supply pipeline supply water to the clothes holding device (1100) at least during the same water supply process.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The present application claims priority to Chinese Patent Application No. 202222310919.3, filed on August 31, 2022, and PCT International Applications No. PCT / CN2022 / 116142 and PCT / CN2022 / 116387, filed on August 31, 2022, the disclosure of all of which are incorporated herein by reference.TECHNICAL FIELD

[0002] The present application relates to the field of household appliances, and in particular to a laundry treatment device and a control method thereof.BACKGROUND

[0003] With the continuous improvement of manufacturing technologies and the increasing demands of people's daily life, laundry treatment devices have entered thousands of households and become the most commonly used household appliances. The laundry treatment devices are used to achieve a variety of treatment processes (washing, rinsing, ironing, drying, etc.) of laundry.

[0004] An existing laundry treatment device is mainly fed with water through a water supply port of a laundry accommodating apparatus, and thus its water supply efficiency is not high. Therefore, there is an urgent need to provide a laundry treatment device with high water supply efficiency.SUMMARY

[0005] An objective of the present application is to provide a laundry treatment device with high water supply efficiency and a control method thereof for improving the water supply efficiency of the laundry treatment device.

[0006] A group of embodiments of the present application provide a laundry treatment device. The laundry treatment device includes a laundry accommodating apparatus, a drying apparatus, a water supply assembly, an air outlet duct and a filter screen, wherein the air outlet duct is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus; the filter screen is arranged between an air outlet of the laundry accommodating apparatus and an air inlet of the drying apparatus to filter the airflow; the water supply assembly at least includes a first water supply passage and a second water supply passage, the first water supply passage supplies water to the laundry accommodating apparatus by passing through a detergent box, and the second water supply passage supplies water to the laundry accommodating apparatus by passing through the filter screen; and in at least a same water supply process, both the first water supply passage and the second water supply passage provide water to the laundry accommodating apparatus.

[0007] Further, a water supply amount of the second water supply passage is greater than a water supply amount of the first water supply passage.

[0008] Further, in a washing stage, the water supply assembly is configured to supply water through the second water supply passage, so as to flush the filter screen while providing water for washing.

[0009] Further, in a rinsing stage, the water supply assembly is configured to supply water through the second water supply passage, so as to flush the filter screen while providing water for rinsing.

[0010] Further, in a cooling stage of a drying operation or after complete cooling, the water supply assembly is configured to flush the filter screen through the second water supply passage.

[0011] Further, the water supply assembly is further configured to, in a drying operation, activate the second water supply passage to flush the filter screen when the filter screen is detected to be blocked.

[0012] Further, the drying apparatus further includes a diversion device arranged in the second water supply passage; and in the drying operation, the diversion device controls a water flow in the second water supply passage to be directly guided into a drainage passage without passing through the laundry accommodating apparatus.

[0013] Further, the second water supply passage is configured to supply water in a washing stage or a rinsing stage so as to flush the filter screen while providing water for washing or rinsing.

[0014] Further, the second water supply passage is configured to be activated to flush the filter screen before or after a cooling stage of a drying operation.

[0015] Further, the second water supply passage is configured to be activated to flush the filter screen when the filter screen is detected to be blocked.

[0016] A group of embodiments of the present application provide a control method of a laundry treatment device. The laundry treatment device includes a laundry accommodating apparatus, a drying apparatus, a water supply assembly and an air outlet duct connected to the laundry accommodating apparatus and the drying apparatus, wherein the air outlet duct is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus; the filter screen is arranged inside the air outlet duct to filter the airflow; the water supply assembly at least includes a first water supply passage and a second water supply passage; and the first water supply passage supplies water to the laundry accommodating apparatus by passing through a detergent box, and the second water supply passage supplies water to the laundry accommodating apparatus by passing through the filter screen. The control method of the laundry treatment device at least includes: determining whether to add detergent and / or softener; activating the first water supply passage to rinse the detergent and / or softener; and at the end of flushing by the first water supply passage or after the flushing by the first water supply passage is over, activating the second water supply passage to flush the filter screen.

[0017] Further, the control method further includes: controlling a first water inflow amount of the first water supply passage to be less than or equal to a second water inflow amount of the second water supply passage.

[0018] Further, the second water inflow amount is greater than 50% of a total water inflow amount of the laundry treatment device in a single water intake process.

[0019] Further, in a washing operation, the first water inflow amount is determined according to an amount of a detergent added before washing; and / or, in a first rinsing stage, the first water inflow amount is 0; and / or, in a second rinsing stage, the first water inflow amount is determined according to an amount of softener added before rinsing.

[0020] Further, the water supply assembly includes a diversion device arranged in the second water supply passage; and in a main drying stage, the diversion device controls a water flow in the second water supply passage to be completely guided into a drainage passage without passing through the laundry accommodating apparatus.

[0021] A group of embodiments of the present application provide a laundry treatment device. The laundry treatment device at least includes a laundry accommodating apparatus, a drying apparatus and an air outlet duct; the air outlet duct is in communication with the laundry accommodating apparatus and the drying apparatus, and is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus; the drying apparatus includes a moisture adsorption and desorption rotary disk; a filter screen is arranged in the air outlet duct to filter the airflow; the moisture adsorption and desorption rotary disk includes a plurality of first holes allowing the airflow to pass through so as to dry the airflow as the airflow passes through the first holes, and the filter screen includes a plurality of second holes allowing the airflow to pass through; and the area of the second hole is less than the cross-sectional area of the first hole.

[0022] A group of embodiments of the present application provide a laundry treatment device. The laundry treatment device at least includes a laundry accommodating apparatus, a drying apparatus and an air outlet duct; the air outlet duct is in communication with the laundry accommodating apparatus and the drying apparatus, and is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus; the drying apparatus includes a moisture adsorption and desorption rotary disk; a filter screen is arranged in the air outlet duct to filter the airflow; the moisture adsorption and desorption rotary disk includes a plurality of first holes allowing the airflow to pass through so as to dry the airflow as the airflow passes through the first holes, and the filter screen includes a second hole allowing the airflow to pass through; and the first hole is a hole formed by an arc surface and a wave surface, the second hole is of a quadrilateral structure, and the ratio of a wave height between the wave surface and the arc surface to a side length of the quadrangle is 10 to 30.

[0023] Further, the area of the second hole is less than one tenth of the cross-sectional area of the first hole.

[0024] Further, the area of the second hole is less than one fiftieth of the cross-sectional area of the first hole.

[0025] Further, an extension length of the moisture adsorption and desorption rotary disk in an extension direction of the first hole is a thickness of the moisture adsorption and desorption rotary disk, and the thickness of the moisture adsorption and desorption rotary disk is 20 to 35 mm.

[0026] Further, the filter screen is obliquely arranged with respect to a flow direction of the airflow; and a projected area of the second hole on a projection plane perpendicular to the flow direction of the airflow is less than the area of the first hole.

[0027] Further, the air outlet duct has a filter screen installation zone, and an angle of inclination of a plane where the filter screen is located relative to a cross section of the filter screen installation zone is greater than or equal to 30°.

[0028] Further, the angle of inclination is 70° to 80°.

[0029] Further, the first hole is a hole formed by an arc surface and a wave surface, and a wave height between the wave surface and the arc surface is 1.5 to 3 microns, preferably 1.7 to 1.8 microns.

[0030] Further, the second hole is of a quadrangular structure, and the side length of the quadrangle ranges from 40 to 300 microns, preferably from 80 to 150 microns.

[0031] A group of embodiments of the present application provide a laundry treatment device. The laundry treatment device includes a laundry accommodating apparatus, a drying apparatus and an air outlet duct; the air outlet duct is in communication with the laundry accommodating apparatus and the drying apparatus, and is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus; a filter screen is arranged in the air outlet duct to filter the airflow; the air outlet duct includes a first end portion close to the laundry accommodating apparatus and a second end portion close to the drying apparatus; the first end portion is arranged at the rear part of the laundry accommodating apparatus and butted to an air outlet of the laundry accommodating apparatus, and the second end portion is arranged at the rear part of the laundry accommodating apparatus and butted to an adapter portion arranged on a side wall of the laundry accommodating apparatus, and is in communication with the drying apparatus by means of the adapter portion; and the distance between one end of the filter screen and the air outlet of the laundry accommodating apparatus is a first distance, the distance between the other end of the filter screen and the air outlet of the laundry accommodating apparatus is a second distance, and the first distance is unequal to the second distance.

[0032] Further, the first distance is less than the second distance.

[0033] Further, the difference between the second distance and the first distance is greater than half of the length of the air outlet duct.

[0034] Further, the drying apparatus further includes a filter screen cleaning device for directing a cleaning fluid onto the filter screen for cleaning.

[0035] Further, the filter screen cleaning device is arranged at an end of the air outlet duct close to the drying apparatus.

[0036] Further, the drying apparatus further includes a spraying mechanism movable in a first direction so as to movably spray a spraying fluid onto the filter screen in the first direction, and the first direction is a length direction of the spraying mechanism.

[0037] Further, the spraying mechanism is rotatable around a rotation axis of the spraying mechanism so as to movably spray the spraying fluid onto the filter screen in a second direction, and the first direction is perpendicular to the second direction. The rotation axis of the spraying mechanism is parallel to the first direction.

[0038] Further, the spraying mechanism is located on a first plane formed by the first direction and the second direction, and an angle between the first plane and a plane where the filter screen is located is less than 90°.

[0039] Further, a distance by which the spraying mechanism moves in the first direction is greater than or equal to the shortest distance between two adjacent spray heads.

[0040] Further, the spraying mechanism sprays the spraying fluid to a preset zone of the filter screen, the preset zone has a first area, and the first area is greater than or equal to 80% of the area of the filter screen.

[0041] A group of embodiments of the present application provide a laundry treatment device. The laundry treatment device includes a laundry accommodating apparatus, a drying apparatus and an air outlet duct connected to the laundry accommodating apparatus and the drying apparatus; the air outlet duct is in communication with the laundry accommodating apparatus and the drying apparatus, and is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus; a filter screen is arranged in the air outlet duct to filter the airflow; and the air outlet duct includes a first end portion close to the laundry accommodating apparatus and a second end portion close to the drying apparatus, one end of the filter screen is located at the first end portion or close to the first end portion, and the other end of the filter screen is located at the second end portion or close to the second end portion.

[0042] Further, the filter screen covers more than half of the length of the air outlet duct.

[0043] Further, the lengths of the first end portion and the second end portion are respectively less than or equal to two fifths of the length of the air outlet duct, and optionally, the lengths of the first end portion and the second end portion are respectively less than or equal to one third of the length of the air outlet duct.

[0044] Further, the laundry accommodating apparatus includes an inner tub and an outer tub.

[0045] An air inlet of the air outlet duct is arranged on a rear wall of the outer tub, and an air outlet of the air outlet duct is arranged on a side wall of the outer tub.

[0046] Further, the air outlet duct is hermetically installed on the rear wall or the side wall of the outer tub, and the rear wall of the outer tub, the air outlet duct and the side wall of the outer tub jointly form an airflow outlet passage.

[0047] Further, the air outlet duct includes a vertical passage in communication with the drying apparatus and an arc passage in communication with the laundry accommodating apparatus.

[0048] Further, the radian of the arc passage is less than or equal to the radian of a side surface of the laundry accommodating apparatus.

[0049] A group of embodiments of the present application provide a laundry treatment device. The laundry treatment device includes a laundry accommodating apparatus, a drying apparatus, a water supply assembly and an air outlet duct connected to the laundry accommodating apparatus and the drying apparatus, wherein the air outlet duct is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus; and a filter screen is arranged inside the air outlet duct to filter the airflow. The laundry treatment device further includes a water film judgement device and a water film removal device, wherein the water film judgement device is configured to detect the change of a system parameter in the laundry treatment device and determine whether there is a water film on the filter screen according to the change of the system parameter; the system parameter includes one or more of temperature, pressure and current; and the water film removal device is configured to remove the water film from the filter screen.

[0050] Further, the water film judgement device is a temperature sensor, which is arranged at an air outlet of the laundry accommodating apparatus and configured to detect the temperature near the air outlet of the laundry accommodating apparatus and determining whether there is a water film on the filter screen according to the temperature near the air outlet of the laundry accommodating apparatus.

[0051] Further, the laundry treatment device further includes a condensing module, and the water film judgement device is a temperature sensor, which is arranged at an air inlet and / or an air outlet of the condensing module and configured to detect the temperature at the air inlet and / or the air outlet of the condensing module and determining whether there is a water film on the filter screen according to the change of the temperature at the air inlet and / or the air outlet of the condensing module.

[0052] Further, the laundry treatment device further includes a circulating fan, and the water film judgement device is a load current detector for detecting the magnitude of load current of the circulating fan.

[0053] Further, the water film judgement device is a pressure sensor arranged in the air outlet duct between the filter screen and the drying apparatus.

[0054] Further, the water film removal device is a vibration starter of the filter screen, and the vibration starter of the filter screen is connected to the filter screen and configured to remove the water film by controlling the vibration frequency of the vibration starter of the filter screen.

[0055] Further, the water film removal device is a power applicator, and the power applicator includes a power generating module and at least one power ball; the power generating module is connected to the at least one power ball and configured to produce power with different frequencies; and when the power applicator is started, the power ball is momentarily in contact with a surface of the filter screen for transmitting power with different frequencies to the filter screen.

[0056] A laundry treatment device includes a laundry accommodating apparatus, a drying apparatus, a water supply assembly and an air outlet duct connected to the laundry accommodating apparatus and the drying apparatus, wherein the air outlet duct is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus; and a filter screen is arranged inside the air outlet duct to filter the airflow. The laundry treatment device further includes a water film judgement device, wherein the water film judgement device is configured to detect the change of a system parameter in the laundry treatment device and to determine whether there is a water film on the filter screen according to the change of the system parameter; the system parameter includes one or more of a temperature, pressure and a current; and when the water film judgement device detects that there is a water film on the filter screen, a fan and a heater in the laundry treatment device are configured to be in a working mode for removal of the water film.

[0057] Further, the fan in the laundry treatment device includes a circulating fan for sucking humid air from the laundry treatment device and forming circulating airflow; and when the water film judgement device detects that there is a water film on the filter screen, the circulating fan is configured to be in a working mode for removal of the water film.

[0058] Further, in the working mode for removal of the water film, the circulating fan causes the airflow to flow in a predetermined direction, and the predetermined direction is a direction of circulation in which the airflow sequentially flows through the laundry accommodating apparatus, the filter screen, the drying apparatus and the laundry accommodating apparatus.

[0059] Further, the drying apparatus includes a moisture desorption module and a regenerating module; the moisture desorption module includes a moisture adsorption and desorption rotary disk; and a regenerative heating module may be configured to heat the moisture adsorption and desorption rotary disk.

[0060] Further, the laundry treatment device further includes a first heater for heating water in the laundry accommodating apparatus.

[0061] Further, when the water film judgement device detects that there is a water film on the filter screen, at least one of the first heater and the regenerative heating module is configured to be in the working mode for removal of the water film; and in the working mode for removal of the water film, at least of the first heater and the regenerative heating module works at higher power or maximum power.

[0062] A control method of a laundry treatment device is provided. The laundry treatment device includes a laundry accommodating apparatus, a drying apparatus and an air outlet duct connected to the laundry accommodating apparatus and the drying apparatus, wherein the air outlet duct is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus; the drying apparatus includes a circulating fan, a moisture adsorption and desorption rotary disk and a regenerative heating module for heating the moisture adsorption and desorption rotary disk; and a filter screen is arranged inside the air outlet duct to filter the airflow. The control method of the laundry treatment device includes the following steps: detecting the change of a system parameter in the laundry treatment device, the system parameter including one or more of a temperature, pressure and a current; determining whether there is a water film on the filter screen according to the change of the system parameter; and controlling the circulating fan to work at higher power or maximum power when it is detected that there is a water film on the filter screen; and / or, controlling the regenerative heating module to work at higher power or maximum power when it is detected that there is a water film on the filter screen.

[0063] Further, the laundry treatment device further includes a water film removal device; and when detecting that there is a water film on the filter screen, the water film removal device is controlled to vibrate so as to remove the water film.

[0064] A group of embodiments of the present application provide a spraying device for spraying a filter screen. The spraying device includes a driving mechanism and a spraying mechanism, wherein the driving mechanism is configured to provide a driving force so as to drive the spraying mechanism to move; and the spraying mechanism is connected to the driving mechanism and configured to spray a cleaning fluid to a preset zone of the filter screen, the preset zone has a first area, and the first area is greater than or equal to 80% of the area of the filter screen.

[0065] Further, the driving mechanism includes a driving motor and a gearbox; and the gearbox is connected to the driving motor and configured to achieve movement of the spraying mechanism in a first direction and rotation of the spraying mechanism around a rotation axis of the spraying mechanism.

[0066] Further, the first direction is a length direction of the spraying mechanism; the longest spraying distance of the spraying mechanism on the filter screen in the first direction is a first length; the longest spraying distance of the spraying mechanism on the filter screen in the second direction is a first width; and the first area is the product of the first length and the first width, wherein the first length covers at least 90% of the length of the filter screen; or, the first width covers at least 90% of the width of the filter screen.

[0067] Further, the spraying mechanism includes a water supply pipe and a spray head, the spray head is provided with a plurality of spray holes arranged at intervals, and the water supply pipe and the spray holes are arranged on two opposite surfaces.

[0068] Further, the plurality of spray holes are arranged on the spray head row by row and / or column by column, and the minimum distance between every two adjacent spray holes is d3.

[0069] Further, a distance by which the spraying mechanism moves in the first direction is greater than or equal to the minimum distance d3 between every two adjacent spray holes.

[0070] Further, an angle of movement of the spraying mechanism around a rotation axis of the spraying mechanism is 5° to 45°.

[0071] Further, the spray head has a cavity, the spraying mechanism further includes a first stop block arranged in the cavity, and the first stop block is movable in the first direction for blocking one or more of the plurality of spray holes.

[0072] A group of embodiments of the present application provide a control method of a spraying device, the spraying device is configured to clean a filter screen, the spraying device includes a driving mechanism, a spraying mechanism and a control module, and the control method includes: controlling, by the control module, water supply to the spraying mechanism; controlling, by the control module, the driving mechanism to drive the spraying mechanism to reciprocate in a first direction; and controlling, by the control module, the driving mechanism to drive the spraying mechanism to reciprocate around a rotation axis of the spraying mechanism, so as to spray a cleaning fluid to a preset zone of a filter screen, wherein the preset zone has a first area, and the first area is greater than or equal to 80% of the area of the filter screen.

[0073] Further, the control module controls the longest spraying distance of the spraying mechanism on the filter screen in the first direction to be a first length; and the control module controls the longest spraying distance of the spraying mechanism on the filter screen in the second direction to be a first width, the first area being the product of the first length and the first width, wherein the first length covers at least 90% of the length of the filter screen; or, the first width covers at least 90% of the width of the filter screen.

[0074] A group of embodiments of the present application provide a laundry treatment device. The laundry treatment device includes a laundry accommodating apparatus, a drying apparatus, a water supply assembly and an air outlet duct connected to the laundry accommodating apparatus and the drying apparatus; the air outlet duct is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus; a filter screen is arranged in the air outlet duct to filter the airflow; the water supply assembly further includes a filter screen water supply port and at least one spraying mechanism connected to the filter screen water supply port; the spraying mechanism is movable in a length direction of the spraying mechanism to cause a spraying fluid to cover the filter screen in a first direction, the length direction of the spraying mechanism being the first direction; and the spraying mechanism rotates by a first angle by taking the first direction as an axis (or taking a rotation axis of the spraying mechanism as an axis), so as to expand the area of the filter screen, covered by the spraying fluid in a second direction, the first direction being perpendicular to the second direction.

[0075] Further, the filter screen includes a first surface and a second surface opposite to each other, and the airflow is first in contact with the first surface of the filter screen; and the spraying mechanism is arranged at the second surface side and faces the filter screen.

[0076] Further, the spraying mechanism is located on a first plane formed by the first direction and the second direction, and an angle between the first plane and a plane where the filter screen is located is less than 90°.

[0077] Further, the distance between the spraying mechanism and the filter screen ranges from 0.4 cm to 1 cm.

[0078] Further, the spraying mechanism includes a plurality of spray ports for spraying water flows, the spray holes are arranged vertically row by row, and a displacement of the spraying mechanism in the first direction is greater than or equal to the minimum distance between two of the spray heads.

[0079] Further, a driving motor and a gearbox are further included, and the driving motor drives the gearbox to realize rotation of the spraying mechanism and / or movement in a length direction of the spraying mechanism.

[0080] Further, the air outlet duct includes a first end portion close to the laundry accommodating apparatus and a second end portion close to the drying apparatus, and the filter screen is arranged in a manner of crossing the first end portion and the second end portion of the air outlet duct.BRIEF DESCRIPTION OF DRAWINGS

[0081] In order to illustrate the technical solutions in the particular embodiments of the present application or in the prior art more clearly, the accompanying drawings required to be used in the description of the particular embodiments or the prior art will be briefly introduced below; obviously, the accompanying drawings in the following description show some of the embodiments of the present application, and those of ordinary skill in the art may still derive other drawings from these accompanying drawings without creative effort. FIG. 1 is a schematic diagram of a partial structure of a laundry treatment device according to an embodiment of the present application; FIG. 2 is a structural diagram of a drying apparatus according to an embodiment of the present application; FIG. 3 and FIG. 4 are both schematic diagrams of relative positions of a laundry accommodating apparatus and the drying apparatus according to an embodiment of the present application; FIGs. 5 to 7 are a perspective view, a rear view and a top view of a washer-dryer machine according to some embodiments of the present application respectively; FIG. 8 and FIG. 9 are a top view and a perspective view of the drying apparatus in FIGs. 6 and 7 respectively; FIG. 10 and FIG. 11 are exploded diagrams of a lower housing and an upper housing for installation of a moisture adsorption and desorption rotary disk; FIG. 12 is a structural diagram of the moisture adsorption and desorption rotary disk according to an embodiment of the present application, in which the structure of a first hole is illustrated; FIG. 13 is a structural diagram of a filter screen according to an embodiment of the present application, in which the structure of a second hole is illustrated; FIG. 14(a) and FIG. 14(b) are schematic diagrams of an installing structure of a filtering assembly according to an embodiment of the present application; FIG. 15(a) and FIG. 15(b) are schematic diagrams of a filter screen installation zone and an air flow direction in the air outlet duct according to two different embodiments of the present application respectively; FIG. 16 is a schematic structural diagram of the filtering assembly according to an embodiment of the present application; FIG. 17 is another schematic structural diagram of the filtering assembly according to an embodiment of the present application; FIG. 18 is a schematic structural diagram of a spraying device according to an embodiment of the present application; FIG. 19 is a schematic diagram of an installation position of the spraying device outside the laundry accommodating apparatus according to an embodiment of the present application; FIG. 20 is a schematic diagram of a partial structure of the spraying device according to an embodiment of the present application; FIG. 20(a) is a front view of the spray head; FIG. 20(b) is a side view of the spray head; FIG. 20(c) is a schematic diagram of a spray angle when the spray mechanism rotates around the rotation axis; FIG. 21 is a schematic diagram of a partial structure of the spraying device according to an embodiment of the present application; FIG. 21(a) is a front view of the spray head; FIG. 21(b) is a schematic diagram of a spray angle when the spray mechanism rotates around the rotation axis; and FIG. 22 is a schematic diagram of a partial structure of a laundry treatment device according to an embodiment of the present application. DETAILED DESCRIPTION

[0082] The technical solutions in the embodiments of the present application will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application. It is obvious that the described embodiments are only a part not all of the embodiments of the present application. The components of the embodiments of the present application, which are generally described and illustrated in the drawings herein, may be arranged and designed in various configurations. Therefore, the detailed descriptions about the embodiments of the present application provided in the drawings are not intended to limit the scope to be protected of the present application, but merely represent selected embodiments of the present application, and features included in different embodiments may be combined with one another. All other embodiments (including new embodiments formed by combining the features included in the different embodiments) obtained by those skilled in the art based on the embodiments of the present application without creative efforts are within the scope of protection of the present application.

[0083] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it is not required to be further defined and explained in subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used merely for distinguishing descriptions, and are not to be construed as indicating or implying relative importance.

[0084] The present application provides a laundry treatment device. The laundry treatment device is configured for treating, such as washing, rinsing, ironing and drying, laundry. The laundry treatment device includes, but is not limited to, a washing machine, a drying machine, a washer-dryer machine, and the like. FIG. 1 illustrates a laundry accommodating apparatus 1100 (which may be provided to include an inner tub and an outer tub) for accommodating laundry to be treated, a drying apparatus 2000, a water supply assembly 3000 and an air outlet duct 1300. The air outlet duct 1300 is connected to the laundry accommodating apparatus 1100 and the drying apparatus 2000. The air outlet duct 1300 is configured to direct airflow from the laundry accommodating apparatus 1100 to the drying apparatus 2000. The water supply assembly 3000 includes a water inlet 3100 of the laundry treatment device, a drum water supply port 3200 (a water supply port of the laundry accommodating apparatus), a filter screen water supply port 3300 and a condenser water supply port 3400. FIG. 2 illustrates that the drying apparatus 2000 includes a circulating module 10, a moisture desorption module 20, a regenerating module 30 and a condensing module 40. The circulating module 10 at least includes a circulating fan. The moisture desorption module 20 at least includes a moisture adsorption and desorption rotary disk and a driving portion of the moisture adsorption and desorption rotary disk. The regenerating module 30 at least includes a regenerating fan and a regenerative heating module. The condensing module 40 at least includes a condenser and a condenser water inlet and outlet passage.

[0085] The treatment process of the laundry treatment device includes but is not limited to: a washing operation, a rinsing operation and a drying operation. The rinsing operation may further include a first rinsing stage and a second rinsing stage. The drying operation may further include a heating stage, a main drying stage and a cooling stage.

[0086] In some embodiments, embodiments of the present application provide a washer-dryer machine 1000. It should be noted that the laundry treatment device according to the embodiment of the present application is described by taking the side-opening door type washer-dryer machine 1000 shown in FIGs. 5 to 7 as an example in the Description. However, it should be understood that the laundry treatment device according to the embodiment of the present application is applicable to any type of laundry treatment device, including but not limited to a side-opening door type drum washing machine, a top-opening door type drum washing machine, an impeller washing machine, an agitator type washing machine, a mini washing machine and the like.

[0087] As shown in FIGs. 5 to 7, the washer-dryer machine 1000 includes a laundry accommodating apparatus 1100 for accommodating laundry to be treated (the "treat" herein may be washing treatment or drying treatment). The laundry accommodating apparatus 1100 may be an accommodating tub, an accommodating basket or other devices capable of accommodating laundry. For example, the laundry accommodating apparatus 110 may be provided as a drum. The drum may include an inner tub and an outer tub. The inner tub is configured to place laundry to be treated and rotates under the action of a driving mechanism, while the outer tub is fixed relative to a machine body in a hanging manner. The inner tub is provided with water- and air- permeable holes. The outer tub is impermeable to water and air, and the outer tub is provided with a first air outlet. The diameter of the inner tub is less than that of the outer tub. A door body 1110 is arranged at a position corresponding to the laundry accommodating apparatus 1100, on a housing 1200 of the washer-dryer machine 1000. The door body 1110 is pivotally connected to the housing 1200. The opening and closing of the door body 1110 may be manually controlled by a user or controlled by means of an electronic controller.

[0088] As shown in FIGs. 5 to 7, the washer-dryer machine 1000 includes a drying apparatus 2000 for drying laundry in the laundry accommodating apparatus 1100. The drying apparatus 2000 is located above the laundry accommodating apparatus 1100. The relative positions of the laundry accommodating apparatus 1100 and the drying apparatus 2000 are not fixed, and the laundry accommodating apparatus 1100 and the drying apparatus 2000 may be relative to each other vertically, or horizontally. For example, the drying apparatus 2000 is arranged above the laundry accommodating apparatus 1100 (FIG. 6); alternatively, the drying apparatus 2000 is arranged behind the laundry accommodating apparatus 1100, or the drying apparatus 2000 is arranged below the laundry accommodating apparatus 1100, or the drying apparatus 2000 is arranged at one side of the laundry accommodating apparatus 1100 (not shown in the figures).

[0089] As shown in FIGs. 8 and 9, in an embodiment of the present application, the drying apparatus 2000 includes a moisture absorbing passage, a regenerating passage, a circulating fan 2100, a moisture adsorption and desorption member 2200, a driving portion 2300 of the moisture adsorption and desorption rotary disk and a regenerating fan 2400.

[0090] As shown in FIG. 6, a first air inlet 2901 of the moisture absorbing passage is in communication with the air outlet duct 1300 of the laundry accommodating apparatus 1100. A first air outlet 2902 of the moisture absorbing passage is in communication with an air inlet duct of the laundry accommodating apparatus 1100. As shown in FIG. 9, the first air outlet 2902 is in communication with the air inlet duct (not shown in FIG. 9) of the laundry accommodating apparatus 1100 by means of a connector 1400. The circulating fan 2100 is located inside the moisture absorbing passage and configured to form circulating airflow in the laundry accommodating apparatus 1100 and the moisture absorbing passage. The regenerating fan 2400 is located inside the regenerating passage and configured to form a moisture desorption airflow in the regenerating passage.

[0091] With continued reference to FIGs. 6 and 9, the laundry accommodating apparatus 1100 is provided with a first airflow inlet and a first airflow outlet. The first airflow inlet is at a position where the air inlet duct is connected to the laundry accommodating apparatus 1100, or the first airflow inlet of the laundry accommodating apparatus 1100 is in communication with the drying apparatus 2000 by means of the air inlet duct. The first airflow outlet is at a position where the air outlet duct 1300 is connected to the laundry accommodating apparatus 1100, or the first airflow outlet of the laundry accommodating apparatus 1100 is in communication with the drying apparatus 2000 by means of the air outlet duct 1300.

[0092] A part of the moisture adsorption and desorption member 2200 is located on the moisture absorbing passage and the other part thereof is located on the regenerating passage, such that both the circulating airflow in the moisture absorbing passage and the moisture desorption airflow in the regenerating passage flow through the moisture adsorption and desorption member 2200. The driving portion 2300 of the moisture adsorption and desorption rotary disk may be, for example, a driving motor for moving (e.g., rotating) the moisture adsorption and desorption member 2200 relative to the moisture absorbing passage and the regenerating passage. During rotation, the moisture adsorption and desorption member 2200 absorbs moisture in the circulating airflow and discharges the same through the moisture desorption airflow.

[0093] In an embodiment, the moisture adsorption and desorption member 2200 may include a moisture adsorption and desorption rotary disk 2201. The moisture adsorption and desorption rotary disk 2201 is provided with a moisture absorbent for absorbing moisture. The moisture absorbent may be, for example, zeolite (molecular sieve), alkali metal aluminosilicate (13X molecular sieve), lithium chloride, silica gel, modified silica gel, activated alumina, etc.

[0094] The driving portion 2300 of the moisture adsorption and desorption rotary disk is configured to drive the moisture adsorption and desorption rotary disk 2201 to rotate relative to the moisture absorbing passage and the regenerating passage. The circulating airflow and the moisture desorption airflow simultaneously flow through the moisture adsorption and desorption rotary disk 2201. On the moisture adsorption and desorption rotary disk 2201, a zone through which the circulating airflow flows is a moisture absorbing zone 2907, and a zone through which the moisture desorption airflow flows is a regenerating zone 2908.

[0095] A first housing (e.g., a lower housing 2700) is provided with a first separator 2725, and a second installation portion 2821 is provided with a second separator 2822. The second separator 2822 is opposite to the first separator 2725 after the first housing is fixedly connected to a second housing (e.g., an upper housing 2820), thereby dividing a space formed by the first housing (e.g., the lower housing 2700) and the second housing (e.g., the upper housing 2820) where the moisture adsorption and desorption member 2200 is located into the moisture absorbing zone 2907 and the regenerating zone 2908, that is, the first separator 2725 and the second separator 2822 may separate the moisture adsorption and desorption rotary disk 2201 into the moisture absorbing zone 2907 and the regenerating zone 2908.

[0096] In an embodiment, as shown in FIGs. 8 and 9, the drying apparatus 2000 may further include a regenerative heating module 2500 and a condenser 2600 which are arranged on the regenerating passage. The regenerative heating module 2500 covers the regenerating zone of the moisture adsorption and desorption member 2200 (the moisture adsorption and desorption rotary disk 2201) and is configured to heat the regenerating zone of the moisture adsorption and desorption member 2200 (the moisture adsorption and desorption rotary disk 2201) to desorb moisture absorbed by the moisture adsorption and desorption member 2200 (the moisture adsorption and desorption rotary disk 2201). The condenser 2600 is configured to condense the moisture desorption airflow flowing out of the regenerating zone of the moisture adsorption and desorption member 2200 to dry the moisture desorption airflow.

[0097] In an embodiment, a rotating-disk detecting device is arranged at the moisture adsorption and desorption rotary disk 2201, may perform detection by current of a rotating-disk driving motor, and is configured to monitor the rotational speed of the moisture adsorption and desorption rotary disk 2201 and send it to the control device of the laundry treatment device, so as to ensure that the moisture adsorption and desorption rotary disk 2201 is kept rotating continuously during the drying operation, thereby preventing the regenerative heating module 2500 from continuously heating a zone to burn out the moisture adsorption and desorption rotary disk 2201. The control device of the laundry treatment device correspondingly adjusts heating power of the regenerative heating module 2500, circulating power of the circulating fan 2100, regenerating power of the regenerating fan 2400, etc. through a feedback of the rotational speed of the moisture adsorption and desorption rotary disk 2201.

[0098] In an embodiment, the drying apparatus 2000 further includes an upper housing and a lower housing (taking the drying apparatus 2000 arranged horizontally as an example). The upper housing and the lower housing cover and fix all components of the drying apparatus 2000, such that the drying apparatus 2000 forms an integral module. In an embodiment, as shown in FIGs. 8 and 9, the drying apparatus 2000 further includes a housing. The housing includes a first housing (the lower housing 2700) and a second housing (the upper housing 2820) for accommodating the moisture adsorption and desorption rotary disk 2201. In an embodiment, two separators (e.g., first separators 2725-1 and 2725-2 shown in FIG. 10) are arranged on the first housing, and two separators (e.g., the second separators 2822-1 and 2822-2 shown in FIG. 11) are arranged on the second housing. A stub shaft 2721 and an accommodating portion for installation of the stub shaft 2721 are arranged at the center of the first housing (the lower housing 2700), and one separator 2725-1 of the first housing may be provided to extend from an inner peripheral wall of the housing to the accommodating portion of the housing. The other separator 2725-2 of the first housing (the lower housing 2700) may be provided to extend from another position of the inner peripheral wall of the housing to the accommodating portion of the housing. The at least two separators do not intersect with the stud shaft 2721, such that an internal space formed by abutment of the first housing and the second housing may be divided into two spaces, namely, a first space and a second space, or a moisture absorbing space and a regenerating space, or the moisture absorbing zone 2907 and the regenerating zone 2908. According to some examples, the accommodating portion is annular, and the at least two separators are arranged in a manner of being tangent to the periphery of the annular accommodating portion. A first installation portion 2720 of the lower housing 2700 is also provided with at least one third separator 2726. The at least one third separator 2726 divides the moisture absorbing zone 2907 into at least two parts, namely, a first moisture absorbing zone 2907-1 and a second moisture absorbing zone 2907-2, such that the circulating airflow flowing into the moisture absorbing zone 2907 may be separated.

[0099] A first sealing member is arranged between the moisture adsorption and desorption rotary disk 2201 and the first separator 2725 of the lower housing 2700, and the first sealing member is fixed to an upper end surface of the first separator 2725 (for example, by means of screws, buckles, gluing, etc.). The first sealing member may include, for example, a sealing strip 2728 and a metal sheet 2727. The sealing strip 2728 may be made of, for example, rubber, foam, tops and other materials. The metal sheet 2727 may be connected to the sealing strip 2728 by means of screws or gluing, and the sealing strip 2728 may be fixed to the first separator 2725.

[0100] A second sealing member is arranged between the moisture adsorption and desorption rotary disk 2201 and the second separator 2822 of the upper housing 2820, and the second sealing member is fixed to a lower end surface of the second separator 2822 (for example, by means of screws, buckles, gluing, etc.) and located right above the first sealing members 2727 and 2728. The second sealing member may include, for example, a sealing ring 2824 and a metal sheet 2823. The sealing ring 2824 may be, for example, made of rubber, foam, tops and other materials. The metal sheet 2823 may be connected to the sealing ring 2824 by means of screws or gluing, and the sealing ring 2824 may be fixed to the second separator 2822.

[0101] The first sealing members 2727 and 2728 and the second sealing members 2823 and 2824 can realize dynamic sealing between the moisture adsorption and desorption member 2200 and the lower housing 2700, i.e., during the rotation of the moisture adsorption and desorption member 2200, the moisture absorbing zone 2907 and the regenerating zone 2908 are separated and kept relatively sealed.

[0102] As shown in FIGs. 10 and 11, a housing sealing ring 2724 is arranged at a position where the upper housing 2820 is connected to the first installation portion 2720 of the lower housing 2700. The housing sealing ring 2724 is configured to ensure the airtightness of the space where the moisture adsorption and desorption member 2200 is located. For example, the housing sealing ring 2724 may be a rubber pad, a silicone pad, etc.

[0103] In an embodiment, the upper housing and the lower housing of the drying apparatus 2000 may be separate housings corresponding to respective components of the drying apparatus 2000 respectively, or may be an integrated housing corresponding to multiple components of the drying apparatus 2000. For example, in the embodiments shown in FIGs. 8 and 9, the lower housing 2700 of the drying apparatus 2000 is an integrated housing. The integrated lower housing 2700 may also be provided with an installation portion for installation of the circulating fan 2100, an installation portion (i.e., the first installation portion) for installation of the moisture adsorption and desorption member 2200, an installation portion for installation of the regenerating fan 2400, and an installation portion for installation of the condenser 2600. As shown in FIG. 8, the upper housing of the drying apparatus 2000 is a separate housing, including an upper housing 2810 for installation of the circulating fan 2100, an upper housing 2820 for installation of the moisture adsorption and desorption member 2200, and an upper housing 2830 for installation of the condenser 2600. The condenser 2600 further includes a water inlet 2610 and a water outlet 2620.

[0104] In an embodiment, as shown in FIGs. 7 to 9, the lower housing 2700 of the drying apparatus 2000 is provided with a plurality of fourth installation portions 2701, and the upper housing 2820 is provided with a fifth installation portion 2801. The fourth installation portion 2701 and the fifth installation portion 2801 are fastened to the housing 1200 of the washer-dryer machine 1000 in a lapping manner, thus realizing installation and fixing of the whole drying apparatus 2000. In this embodiment, there is no direct rigid connection between the drying apparatus 2000 and the laundry accommodating apparatus 1100, such that vibration of the laundry accommodating apparatus 1100 in the working process can be prevented from being transmitted to the drying apparatus 2000 (especially the moisture adsorption and desorption member 2200), which improves the stability and the reliability of the drying apparatus 2000.

[0105] The upper housing 2820 includes a circular second installation portion 2821 for installation of the moisture adsorption and desorption member 2200, and further includes the first air outlet 2902 of the moisture absorbing passage. The moisture adsorption and desorption member 2200 is rotatably connected to the stud shaft 2721 of the first installation portion 2720, such that the moisture adsorption and desorption member 2200 is rotatably connected to a substantially cylindrical space formed by the first installation portion 2720 and the second installation portion 2821.

[0106] In an embodiment, as shown in FIGs. 6 and 9, the first air inlet 2901 of the moisture absorbing passage of the drying apparatus 2000 may be in communication with the air outlet duct 1300 of the laundry accommodating apparatus 1100 by means of a flexible pipe (e.g., a corrugated hose) 2903. In an embodiment, a filter (e.g., a filter screen) for filtering debris and clothes waddings may be arranged in the air outlet duct 1300. In addition, the connector 1400 may also be in communication with the air inlet duct of the laundry accommodating apparatus 1100 through a flexible pipe (not shown in FIGs. 6 and 9). Therefore, the vibration of the laundry accommodating apparatus 1100 can be prevented from being transmitted to the drying apparatus 2000 (especially the moisture adsorption and desorption member 2200), thereby improving the stability and the reliability of the drying apparatus 2000.

[0107] In an embodiment, as shown in FIGs. 8 and 9, various components of the drying apparatus 2000 (including the circulating fan 2100, the moisture adsorption and desorption member 2200, the driving portion 2300 of the moisture adsorption and desorption rotary disk, the regenerating fan 2400, the regenerative heating module 2500, the condenser 2600, etc.) are horizontally arranged, in which rotating components (including the circulating fan 2100, the moisture adsorption and desorption member 2200, the driving portion 2300 of the moisture adsorption and desorption rotary disk and the regenerating fan 2400) have substantially parallel axes of rotation and are substantially perpendicular to the upper housing of the washer-dryer machine 1000 and the axis of rotation of the laundry accommodating apparatus 1100. According to this embodiment, the height of the washer-dryer machine 1000 can be reduced to the maximum extent to save the space.

[0108] In an embodiment, the moisture desorption module 20 includes a moisture adsorption and desorption rotary disk 2201. As shown in FIG. 12, the moisture adsorption and desorption rotary disk 2201 includes a plurality of first holes 2202 allowing the airflow to pass through, and dries the airflow flowing through the plurality of first holes 2202. The first hole 2202 is not particularly limited in its structure, and it may be a through hole in any shape (such as a circular shape and an oval shape) or a turning hole with any angle. The arrangement of the first holes 2202 is not particularly limited either and may be that a plurality of curved surfaces are arranged in an intertwined manner, or arc surfaces and wave surfaces are arranged alternately. There may be a certain extension distance in an extension direction in which the first hole 2202 is formed, i.e., the moisture adsorption and desorption rotary disk 2201 has a certain thickness, which can ensure that the moisture adsorption and desorption rotary disk 2201 has favorable dehumidification performance.

[0109] The filter screen 601 is arranged in the air outlet duct 1300 to filter the airflow so as to filter out waddings and debris carried in the airflow, and block / adhere the waddings and debris on a filtering surface of the filter screen 601. As shown in FIG. 13, the filter screen 601 includes a plurality of second holes 6013 that allow the airflow to pass through. The second hole 6013 is not particularly limited in its structure, and it may be a through hole in any shape or a turning hole with any angle. The specific structural form of the second hole 6013 is not particularly limited either, and it may be of a square structure, a rectangular structure, a diamond structure, a circular structure, or other polygonal structures, such as a hexagonal structure or a regular hexagonal structure, an octagonal structure or a regular octagonal structure. In design of the structure of the filter screen 601, it is necessary to consider the material, mesh number, aperture and aperture ratio of the filter screen 601, and it is also necessary to fully consider the mechanical strength, service life and filtering effect of the filter screen 601 so as to reasonably set the specific structure of the second hole 6013 in the filter screen 601.

[0110] In addition, there may also be a certain extension distance in an extension direction in which the second hole 6013 is formed, i.e., the filter screen 601 may also have a certain thickness, which can ensure the filtering effect of the filter screen 601 on waddings and debris. It may also be provided that the distance in the extension direction in which the second hole 6013 is formed is less than the distance in the extension direction in which the first hole 2202 is formed, so as to balance the filtering effect and the moisture desorption effect of the laundry treatment device.

[0111] The area of the second hole 6013 is less than the cross-sectional area of the first hole 2202, so as to reduce, prevent or avoid blockage of the first hole 2202 in the moisture adsorption and desorption rotary disk 2201. The airflow from the laundry accommodating apparatus is directed to the drying apparatus 2000 by the air outlet duct 1300, and the filter screen 601 is arranged inside the air outlet duct 1300 to filter the airflow. Therefore, the airflow first passes through the plurality of second holes 6013 in the filter screen 601, and then passes through the plurality of first holes 2202 in the moisture adsorption and desorption rotary disk 2201. The area of the second hole 6013 is less than the cross-sectional area of the first hole 2202, which is beneficial for the filter screen 601 to filter out waddings and debris with smaller sizes, such that the content of waddings and debris in the airflow passing through the moisture adsorption and desorption rotary disk 2201 is reduced, thereby preventing the moisture adsorption and desorption rotary disk from being blocked and improving the dehumidification efficiency of the moisture adsorption and desorption rotary disk 2201.

[0112] In this embodiment, the laundry treatment device includes a plurality of first holes 2202 arranged in the moisture adsorption and desorption rotary disk 2201 and a plurality of second holes 6013 arranged in the filter screen 601, and the area of the second hole 6013 is less than the cross-sectional area of the first hole 2202, so as to ensure that the airflow, when flowing through the second holes 6013 of the filter screen 601, can be sufficiently filtered to filter out waddings and debris in the airflow. In addition, since the waddings and debris in the airflow that passes through the filter screen 601 are fully filtered out, the airflow, when subsequently passing through the first holes 2202 with the large cross-sectional areas, can be fully dehumidified, such that the dehumidification efficiency of the moisture adsorption and desorption rotary disk 2201 can be improved.

[0113] In an embodiment, the area of the second hole 6013 is less than one tenth of the cross-sectional area of the first hole 2202. In this embodiment, the size relationship between the area of the second hole 6013 and the cross-sectional area of the first hole 2202 falls within a more appropriate range of relationship derived by the inventor through various verifications. For the first time, the inventor has considered limiting the size of the first hole 2202 of the filter screen 601 to prevent the first hole 2202 of the moisture adsorption and desorption rotary disk 2201 from being blocked, and has taken into account comprehensively the effect of removing waddings and debris, airflow pressure / airflow impulse, and other factors.

[0114] In an embodiment, the area of the second hole 6013 is less than 1 / 10 of the cross-sectional area of the first hole 2202. The area of the second hole 6013 may be set to 1 / 50 to 1 / 900 of the cross-sectional area of the first hole 2202.

[0115] Further, when the area of the second hole 6013 is 1 / 100 to 1 / 900 of the cross-sectional area of the first hole 2202, the adhesion / blocking effect of the filter screen 601, the risk of blockage of the filter screen 601, the service life of the filter screen 601, the dehumidification efficiency of the moisture adsorption and desorption rotary disk 2201, the failure rate of the moisture adsorption and desorption rotary disk 2201 and the service life of the moisture adsorption and desorption rotary disk 2201 are better.

[0116] In an embodiment, the first hole 2202 is a hole formed by an arc surface and a wave surface, and a wave height between the wave surface and the arc surface is 1.5 mm to 3 mm. Preferably, the wave height between the wave surface and the arc surface is 1.7 mm to 1.8 mm.

[0117] The moisture desorption module 20 may include a moisture adsorption and desorption rotary disk 2201. The moisture adsorption and desorption rotary disk 2201 may include moisture absorbents, such as molecular sieves, alkali metal aluminosilicate (13X molecular sieves), lithium chloride, silica gel, modified silica gel and activated alumina, etc. In the following, the description is given by taking the moisture adsorption and desorption rotary disk 2201 using molecular sieve as an example.

[0118] The moisture adsorption and desorption rotary disk 2201 has a first hole 2202, and the first hole 2202 may be a hole formed by an arc surface and a triangular surface, a hole formed by a large arc surface and a small arc surface, or a hole formed by an arc surface and a wave surface. FIG. 12 is a sectional view of the moisture adsorption and desorption rotary disk 2201, in which four complete arc surfaces are shown, and the four arc surfaces have basically the same center of a circle. In a first zone 2210 illustrated in FIG. 12, the first hole 2202 is a hole formed by an arc surface and a triangular surface. In a second zone 2220 illustrated in FIG. 12, the first hole 2202 is a hole formed by an arc surface and another arc surface (which may be a quarter arc surface or an arc surface of another length). In a third zone 2230 illustrated in FIG. 12, the first hole 2202 may be a hole formed by an arc surface and a wave surface. The wave surface may be a surface formed by extension in the form of a sine / cosine.

[0119] The wave height between the wave surface and the arc surface is a distance between two adjacent concentric circles, i.e., d1 illustrated in FIG. 12, and d1 may be set to 1.5 mm to 3 mm. For example, d1 may be set to 1.6 mm, 1.9 mm, 2.1 mm, 2.5 mm, 2.7 mm or 2.9 mm. Preferably, the wave height between the wave surface and the arc surface (i.e., d1 illustrated in FIG. 12) may be set to 1.7 mm, 1.75 mm or 1.8 mm.

[0120] The moisture adsorption and desorption rotary disk 2201 has a certain extension distance in the extension direction of the first hole 2202, i.e., the moisture adsorption and desorption rotary disk 2201 has a certain thickness, which may be set to 20 mm to 35 mm, preferably 22 mm to 30 mm. The diameter of the moisture adsorption and desorption rotary disk 2201 may be set to 260 mm to 400 mm, preferably 300 mm to 350 mm. In an embodiment, the thickness of the moisture adsorption and desorption rotary disk 2201 is set to 25 mm, and the diameter of the moisture adsorption and desorption rotary disk 2201 is set to 320 mm. The thickness and the diameter of the moisture adsorption and desorption rotary disk 2201 are selected according to the factors such as the size of the airflow, the material of the moisture adsorption and desorption rotary disk 2201 and the structure and the size of the first hole 2202 of the moisture adsorption and desorption rotary disk 2201.

[0121] In this embodiment, different structural settings and different sizes of the first hole 2202 in the moisture adsorption and desorption rotary disk 2201 are provided. With the above structural and dimensional design, the dehumidification efficiency of the moisture adsorption and desorption rotary disk 2201 can be fully improved.

[0122] In an embodiment, as shown in FIG. 13, the second hole 6013 is of a quadrilateral structure, and the side length of the quadrangle ranges from 40 microns to 200 microns. Preferably, the side length of the quadrangle ranges from 80 microns to 120 microns.

[0123] The quadrangular structure may be a square structure, a rectangular structure, a diamond structure or other quadrangles. If the second hole 6013 is rectangular, the side length of the quadrangle is the length of a long side or the length of a short side of the rectangle, and both the length of the long side and the length of the short side range from 40 microns to 200 microns. For example, the side length of the quadrangle may be set to 80 microns, 83 microns, 87 microns, 92 microns, 97 microns, 103 microns, 107 microns, 114 microns, 118 microns and 120 microns. In other embodiments, the second hole 6013 may also be of a circular structure with a radius of 40 microns to 200 microns, preferably 80 microns to 120 microns. In other embodiments, the second hole 6013 may also be of other polygonal structures, such as a hexagonal structure or a regular hexagonal structure, and an octagonal structure or a regular octagonal structure. When the second hole 6013 is of a rectangular structure, a hexagonal structure, an octagonal structure, or other structures with unequal side lengths, the longest side length of the structure of the second hole 6013 ranges from 40 microns to 200 microns, preferably from 80 microns to 120 microns.

[0124] In this embodiment, in combination with the structural setting of the first hole 2202, an optional range of the side length of the structure forming the second hole 6013 is provided for cooperation. When both the first hole 2202 and the second hole 6013 fall within the above ranges, on the one hand, the laundry treatment device can better avoid system abnormality resulting from blockage of the filter screen 601; and on the other hand, the moisture adsorption and desorption rotary disk 2201 has a more excellent dehumidification function, which ensures the drying efficiency of the laundry treatment device.

[0125] In a group of embodiments, the present application also provides a laundry treatment device. The laundry treatment device at least includes a laundry accommodating apparatus, a drying apparatus 2000 and an air outlet duct 1300. The air outlet duct 1300 is in communication with the laundry accommodating apparatus and the drying apparatus 2000, and is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus 2000. The drying apparatus 2000 includes a moisture adsorption and desorption rotary disk 2201. A filter screen 601 is arranged inside the air outlet duct 1300 to filter the airflow.

[0126] The moisture adsorption and desorption rotary disk 2201 includes a plurality of first holes 2202 allowing the airflow to pass through to dry the airflow as the airflow passes through the first holes 2202, and the filter screen 601 includes a second hole 6013 allowing the airflow to pass through. The first hole 2202 is a hole formed by an arc surface and a wave surface, the second hole 6013 is of a quadrilateral structure, and the ratio of the wave height between the wave surface and the arc surface to the side length of the quadrangle is 10 to 30.

[0127] As shown in FIGs. 12 and 13, the ratio of d1 to d2 ranges from 10 to 30. For example, d1: d2 = 13, 15, 17, 19, 23, 26, 28, 30, etc. In a specific embodiment, in the first hole 2202, the wave height between the wave surface and the arc surface is 1.8 mm; in the second hole 6013, the side length of the quadrangle is 90 microns; and d1: d2=20. In a specific embodiment, in the first hole 2202, the wave height between the wave surface and the arc surface is 1.7 mm; in the second hole 6013, the side length of the quadrangle is 80 microns; and d1: d2=21.25. In a specific embodiment, in the first hole 2202, the wave height between the wave surface and the arc surface is 1.8 mm; in the second hole 6013, the side length of the quadrangle is 100 microns; and d1: d2=18.

[0128] In this embodiment, the airflow from the laundry accommodating apparatus is directed to the drying apparatus 2000 by the air outlet duct 1300, and the filter screen 601 is arranged inside the air outlet duct 1300 to filter the airflow. Therefore, the airflow first passes through the plurality of second holes 6013 in the filter screen 601, and then passes through the plurality of first holes 2202 in the moisture adsorption and desorption rotary disk 2201. The ratio of the wave height d1 in the first hole 2202 to the side length d2 in the second hole 6013 is 10 to 30, which can ensure that the filter screen 601 filters out waddings and debris of smaller sizes, such that the content of waddings and debris in the airflow passing through the moisture adsorption and desorption rotary disk 2201 is reduced, thereby preventing the moisture adsorption and desorption rotary disk from blockage. Meanwhile, the second holes 6013 of a larger size can make the humid airflow be in full contact with the moisture adsorption and desorption rotary disk 2201, which improves the dehumidification efficiency of the moisture adsorption and desorption rotary disk 2201.

[0129] In an embodiment, the area of the second hole 6013 may be set to be less than 1 / 10 of the cross-sectional area of the first hole 2202. Preferably, the area of the second hole 6013 is set to be less than 1 / 50 of the cross-sectional area of the first hole 2202, for example, the area of the second hole 6013 is 1 / 50, 1 / 100, 1 / 400, 1 / 900, etc. of the cross-sectional area of the first hole 2202.

[0130] In this embodiment, the structural settings of the first hole 2202 and the second hole 6013 are further optimized to ensure that the airflow, when flowing through the second holes 6013 in the filter screen 601, can be sufficiently filtered to filter out waddings and debris in the airflow. In addition, since the waddings and debris in the airflow that passes through the filter screen 601 are fully filtered out, the airflow, when subsequently passing through the first holes 2202 with the large cross-sectional areas, can be fully dehumidified, such that the dehumidification efficiency of the moisture adsorption and desorption rotary disk 2201 can be improved. The structural and dimensional settings of the first holes 2202 included in the moisture adsorption and desorption rotary disk 2201 and the second holes 6013 included in the filter screen 601 can balance the adhesion / blocking effect of the filter screen 601, the risk of blockage of the filter screen 601, the service life of the filter screen 601, the dehumidification efficiency of the moisture adsorption and desorption rotary disk 2201, the failure rate of the moisture adsorption and desorption rotary disk 2201 and the service life of the moisture adsorption and desorption rotary disk 2201.

[0131] In a group of embodiments, the present application also provides a laundry treatment device. The laundry treatment device includes a laundry accommodating apparatus, a drying apparatus 2000 and an air outlet duct 1300. The air outlet duct 1300 is in communication with the laundry accommodating apparatus and the drying apparatus 2000, and is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus 2000. The drying apparatus 2000 includes a moisture adsorption and desorption rotary disk 2201. The moisture adsorption and desorption rotary disk 2201 includes a first hole 2202 allowing the airflow to pass through, so as to dry the airflow as it passes through the first hole, and the filter screen 601 includes a second hole 6013 allowing the airflow to pass through. The filter screen 601 is arranged obliquely with respect to a flow direction of the airflow. As shown in FIGs. 14(a) and 14 (b), the filter screen 601 is arranged obliquely with respect to the flow direction of the airflow, an angle is formed between a direction in which the filter screen 601 is arranged and the airflow direction, the angle may be greater than or equal to 30°, and preferably the angle between the direction in which the filter screen 601 is arranged and the airflow direction ranges from 70° to 80°. In FIG. 14, the filter screen 601 may be considered as being set at the front and rear sides of the air outlet duct 1300 (the side of the air outlet duct 1300 close to the laundry accommodating apparatus 1100 shown in FIG. 6 is the front side, and the side opposite to the front as directly seen in FIG. 6 is the rear side). In another embodiment, the filter screen 601 may be set at the left and right sides of the air outlet duct 1300 (the left and right side surfaces of the air outlet duct 1300 as shown in FIG. 6).

[0132] A projected area of the second hole 6013 on a projection plane perpendicular to the flow direction (black arrows in FIGs. 14(a) and14 (b) indicate the airflow direction) of the airflow is smaller than the cross-sectional area of the first hole 2202. It can be understood that in FIG. 13, a projected area of the second hole 6013 on a projection plane perpendicular to the flow direction of the airflow is smaller than the area of the second hole 6013 itself. The cross-sectional area of the first hole 2202 is an area of the smallest surface composed of an arc surface and a wave surface, and as shown in FIG. 12, the area of the part filled in black in the third zone 2230 is the cross-sectional area of the first hole 2202.

[0133] In this embodiment, the filter screen 601 is obliquely arranged with respect to the flow direction of the airflow, which is different from the existing structure in which the filter screen 601 is arranged perpendicular to the airflow direction. In this embodiment, the size relationship between the first hole 2202 and the second hole 6013 is defined to meet the following condition: the projected area of the second hole 6013 on the projection plane perpendicular to the flow direction of the airflow is less than the cross-sectional area of the first hole 2202. Thus, on the one hand, it can be ensured that the airflow, when flowing through the second holes 6013 of the filter screen 601, can be sufficiently filtered to filter out waddings and debris in the airflow; and on the other hand, since waddings and debris in the airflow that passes through the filter screen 601 are fully filtered out, the airflow, when subsequently passing through the first holes 2202 with the large cross-sectional areas, can be fully dehumidified, which improves the dehumidification efficiency of the moisture adsorption and desorption rotary disk 2201.

[0134] In an embodiment, the air outlet duct 1300 is provided with an installation zone of the filter screen 601, and an angle of inclination of a plane where the filter screen 601 is located relative to a cross section 1360 of the installation zone 1361 of the filter screen 601 is greater than or equal to 30°.

[0135] FIGs. 15 (a) and 15(b) illustrate the installation zone 1361 of the filter screen 601 and the cross section 1360 of the installation zone 1361 of the filter screen 601. FIG. 16 also illustrates an angle of inclination e of a plane where the filter screen 601 is located relative to the cross section 1360 of the installation zone 1361 of the filter screen 601, and the angle of inclination e ≥ 30. Since different angles at which the filter screen 601 is set directly affect its filtering effect, in this embodiment, the angle at which the filter screen 601 may be set in the air outlet duct 1300 is given on the premise of ensuring that the filtering effect reaches more than 80%.

[0136] In an embodiment, 70° ≤ the angle of inclination e ≤ 80°. On the premise that the structure and the size of the second hole 6013 are the same as the structure and the size of the first hole 2202, the filtering effect can be improved by 10% or more by setting the filter screen 601 at the angle of inclination provided in this embodiment.

[0137] In an embodiment, a projected area of the second hole 6013 in the airflow direction is also less than 1 / 10 of the cross-sectional area of the first hole 2202. Preferably, the projected area of the second hole 6013 in the airflow direction is less than 1 / 50 of the cross-sectional area of the first hole 2202. For example, the projected area of the second hole 6013 in the airflow direction is 1 / 50, 1 / 100, 1 / 400, 1 / 900, etc. of the cross-sectional area of the first hole 2202.

[0138] In this embodiment, the size relationship between the projected area of the second hole 6013 in the airflow direction and the cross-sectional area of the first hole 2202 is defined from another perspective. On the one hand, it can be ensured that the airflow, when flowing through the second holes 6013 of the filter screen 601, can be sufficiently filtered to filter out waddings and debris in the airflow. On the other hand, since the waddings and debris in the airflow that passes through the filter screen 601 are fully filtered out, the airflow, when subsequently passing through the first holes 2202 with the large cross-sectional areas, can be fully dehumidified, which improves the dehumidification efficiency of the moisture adsorption and desorption rotary disk 2201.

[0139] In a group of embodiments, the present application also provides a laundry treatment device. An air outlet duct 1300 is in communication with a laundry accommodating apparatus and a drying apparatus 2000, and is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus 2000. The air outlet duct 1300 includes a first end portion 1301 close to the laundry accommodating apparatus and a second end portion 1302 close to the drying apparatus 2000. One end of a filter screen 601 is close to the first end portion 1301, and the other end of the filter screen 601 is close to the second end portion 1302.

[0140] In a specific embodiment, the first end portion 1301 is arranged at the rear part of the laundry accommodating apparatus and butted to an air outlet of the laundry accommodating apparatus. The second end portion 1302 is arranged at the rear part of the laundry accommodating apparatus and butted to an adapter portion 1303 arranged on a side wall of the laundry accommodating apparatus (as shown in FIG. 22). The adapter portion 1303 is in communication with the drying apparatus 2000, and the adapter portion 1303 is provided to save more space.

[0141] In this embodiment, as shown in FIG. 14, the air outlet duct 1300, both the first end portion 1301 and the second end portion 1302 of the air outlet duct 1300, and the filter screen 601 are illustrated. The first end portion 1301 and the second end portion 1302 are parts of the air outlet duct 1300 at two ends other than a middle part. One end of the filter screen 601 is close to the first end portion 1301, and the other end of the filter screen 601 is close to the second end portion 1302, such that the coverage area of the filter screen 601 in the air outlet duct 1300 can be enlarged to allow for larger-area filtration, by the filter screen, of the waddings and the debris in the airflow.

[0142] In an embodiment, the filter screen 601 covers more than half of the length of the air outlet duct 1300. As shown in FIG. 14, the length of the air outlet duct 1300 is L0, the length of the air outlet duct 1300 covered by the filter screen 601 is L1, and L1 > 1 / 2*L0.

[0143] In an embodiment, the lengths of the first end portion 1301 and the second end portion 1302 are both less than or equal to two fifths of the length of the air outlet duct 1300. Preferably, the lengths of the first end portion 1301 and the second end portion 1302 are both less than or equal to one third of the length of the air outlet duct 1300. For example, if an endpoint of the first end portion 1301 is a point 0 of the air outlet duct 1300, the first end portion 1301 is at 0-2 / 5*L0 of the air outlet duct 1300, and the second end portion 1302 is at 3 / 5*L0-L0 of the air outlet duct 1300. One end of the filter screen 601 is located at the first end portion 1301, and for example, one end of the filter screen 601 may be located at 0, 1 / 5*L0, 1 / 6*L0, 1 / 8*L0, 3 / 10*L0, 2 / 5*L0 and other positions. The other end of the filter screen 601 is located at the second end portion 1302, and for example, the other end of the filter screen 601 may be located at 3 / 5*L0, 7 / 10*L0, 4 / 5*L0, 9 / 10*L0, L0 and other positions. When one end of the filter 601 is located at 3 / 10*L0 and the other end of the filter 601 is located at 9 / 10*L0, the filter 601 covers the length of 3 / 5*L0.

[0144] In a group of embodiments, the present application also provides a laundry treatment device. An air outlet duct 1300 includes a first end portion 1301 close to a laundry accommodating apparatus and a second end portion 1302 close to a drying apparatus 2000. The first end portion 1301 is arranged at the rear part of the laundry accommodating apparatus and butted to an air outlet of the laundry accommodating apparatus. The second end portion 1302 is arranged at the rear part of the laundry accommodating apparatus and butted to an adapter portion 1303 arranged on a side wall of the laundry accommodating apparatus. The adapter portion 1303 is in communication with the drying apparatus 2000.

[0145] The distance between one end of a filter screen 601 and the air outlet of the laundry accommodating apparatus is a first distance L2, and the distance between the other end of the filter screen 601 and the air outlet of the laundry accommodating apparatus is a second distance L3. The first distance L2 is unequal to the second distance L3. In an embodiment, L2 may be greater than L3, and in another embodiment, L3 may be greater than L2. In the structure as illustrated in FIG. 14, L3 is greater than L2.

[0146] In this embodiment, the first distance L2 is unequal to the second distance L3, such that the filtering area of the filter screen 601 can be increased and waddings and debris in the airflow can be reduced, thereby avoiding a system failure caused by the waddings and debris.

[0147] In an embodiment, the difference between the second distance and the first distance is more than half of the length of the air outlet duct 1300. As shown in FIG. 14, L3 - L2 > 1 / 2*10. At this time, the filter screen 601 covers more than half of the air outlet duct 1300, which increases the filtering area, reduces the waddings and debris in the airflow, and thus avoids a system failure caused by the waddings and debris.

[0148] In an embodiment, the laundry treatment device further includes a filter screen cleaning device 6100 for directing a cleaning fluid onto the filter screen 601 for cleaning. The filter screen cleaning device 6100 may include a flushing passage for flushing a filtering surface of the filter screen 601 so as to prevent waddings and debris from blocking a second hole 6013 of the filter screen 601.

[0149] In an embodiment, the filter screen cleaning device 6100 is arranged at an end of the air outlet duct 1300 close to the drying apparatus 2000. As shown in FIG. 16, the filter screen cleaning device 6100 includes the filter screen 601, at least one cleaning nozzle 602 and a nozzle water supply pipe 603, which are sequentially arranged in the air outlet duct 1300 in an air intake direction, such that airflow from a drum of a washing machine first passes through the filter screen 601 to filter out waddings and debris contained in the airflow. In addition, the cleaning nozzle 602 is configured to spray cleaning water to clean the filter screen 601 and remove waddings and debris adhered to the filter screen 601, thereby restoring the filtering capability of the filter screen for continuously filtering the airflow from the drum. The nozzle water supply pipe 603 is in communication with a filter screen water supply port 3300 to provide clean water from an external water source to the cleaning nozzle 602.

[0150] As shown in FIG. 17, a filtering assembly 60 is also provided with a clean water channel (not shown). The clean water channel is preferably arranged on a non-filtering surface 6012 side of the filter screen 601 and is in communication with a drainage outlet of the washing machine. In this way, a self-cleaning water flow flows of the nozzle water supply pipe 603 to reach the nozzle, and then flushes a filtering surface 6011 of the filter screen 601 to wash away waddings and debris adhered to the filter screen 601, and the self-cleaning water flow, after finishing flushing of the filter screen 601, flows to the drainage outlet of the washing machine and is discharged to the outside of the machine body. Optionally, the cleaning water channel may also be independently provided with a drainage outlet, such that the self-cleaning water flow can be independently discharged outside the machine body of the washing machine. Preferably, the cleaning nozzle 602 is provided to gradually become flat from the nozzle water supply pipe 603 to the filter screen 601, and correspondingly, the width of the filter screen 601 substantially covers the entire width of the air outlet duct 1300, thereby improving the filtering effect. Further, the cleaning water flow can cover the entire width of the filter screen 601, thereby improving the self-cleaning effect of the filter screen 601.

[0151] In an embodiment, the laundry treatment device further includes a spraying device 6200. The spraying device 6200 includes a spraying mechanism. The spraying mechanism may move along its length direction, such that a cleaning fluid covers the filter screen 601 in a first direction. As shown in FIGs. 18 to 21, the spraying device 6200 includes a driving mechanism and a spraying mechanism. The driving mechanism includes a driving motor 6101 and a gearbox 6102. The spraying mechanism includes a spray head 6103 and a water supply pipe 6105. The spray head 6103 includes a plurality of spray holes 6104 arranged at intervals. For example, the spray head 6103 may be of a structure similar to a shower. The spray holes 6104 may be arranged vertically row by row, and the spray holes 6104 may also be arranged horizontally column by column. The spray holes 6104 may be arranged in one or more rows or in one or more columns. The spray holes 6104 may be regularly arranged (the spray holes 6104 are arranged at equal intervals), irregularly arranged, or randomly distributed according to certain rules. The shortest distance between every two adjacent spray holes 6104 is d3. FIG. 18 illustrates the driving motor 6101, the gearbox 6102, the spray head 6103, the water supply pipe 6105, and a filter screen bracket 604 (the filter screen 601 for filtering is arranged in the filter screen bracket 604) in the spraying device 6200. FIG. 19 illustrates a filtering assembly 60 (including the filter screen 601) arranged on an outer wall of the laundry accommodating apparatus 1100 and a spraying device 6200 for cleaning the filter screen 601. The driving motor 6101 and the gearbox 6102 work together to enable the spraying mechanism to move in a first direction (a length direction of the spraying mechanism), such that the cleaning fluid (a spraying fluid, which may be water or water added with a detergent) covers the filter screen 601 to an upper end and a lower end of the filter screen 601 in the first direction. The spraying mechanism may also rotate in a second direction (a direction perpendicular to the length direction of the spraying mechanism) / the spraying mechanism may rotate in a reciprocating manner around the rotation axis of the spraying mechanism, such that the spraying fluid covers the filter screen 601 to a left end and a right end of the filter screen 601 in the second direction. The first direction is perpendicular to the second direction.

[0152] In an embodiment, FIG. 20 illustrates the specific structure of the spray head 6103. FIG. 20(a) is a front view of the spray head 6103, which illustrates a front side of the spray head 6103: a side of the spray head 6103 facing the filter screen 601 (directly facing the filter screen 601). FIG. 20(b) is a side view of the spray head 6103. The distance by which the spraying mechanism moves in the first direction is greater than or equal to the shortest distance d3 between every two adjacent spray holes 6104, such that all parts of the filter screen 601 can be directly sprayed with the spraying fluid, avoiding some parts on the filter screen 601 from not being sprayed with the spraying fluid to ensure that the spraying device 6200 can comprehensively clean the whole filter screen 601.

[0153] In an embodiment, the spray head 6103 may be rotated to make a sprayed fluid cover the filter screen 601 in the second direction. In this embodiment, the rotation of the spray head 6103 may rely on the driving of the driving motor 6101 and the gearbox 6102, such that the spray hole 6104 rotates at a preset speed to remove waddings and debris adhered to the filter screen 601.

[0154] In a group of embodiments, the present application also provides a laundry treatment device. The laundry treatment device includes a laundry accommodating apparatus, a drying apparatus 2000, a water supply assembly 3000 and an air outlet duct 1300 connected to the laundry accommodating apparatus and the drying apparatus 2000. The air outlet duct 1300 is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus 2000.

[0155] A filter screen 601 is arranged in the air outlet duct 1300, and the filter screen 601 is arranged inside the air outlet duct 1300 to filter the airflow. The water supply assembly 3000 further includes a filter screen water supply port 3300 and at least one spraying mechanism connected to the filter screen water supply port 3300.

[0156] The spraying mechanism may move in a length direction of the spraying mechanism, such that the spraying fluid covers the filter screen 601 in a first direction, and the length direction of the spraying mechanism is the first direction. The spraying mechanism rotates at a first angle by taking the first direction as an axis, so as to expand the area of the filter screen 601 covered with the spraying fluid. In an embodiment, as shown in FIG. 20(c), the first angle α is 5° to 45°. In FIG. 20(c), a direction facing paper is the first direction. Specifically, the first angle α may be set to 5°, 12°, 16°, 19°, 24°, 28°, 31°, 37°, 42°, 45° or the like. The rotation angle, i.e., the first angle α may be selected according to different widths of the filter screen 601. In this embodiment, the spraying fluid covers more than 80% of the filter screen 601 through movement of the spraying mechanism.

[0157] In an embodiment, the spraying mechanism further includes a first stop block 6106. The first stop block 6106 is arranged on a side of the spray head 6103 away from the water supply pipe 6105, and is configured to block one or more of the plurality of spray holes 6104. The spray head 6103 has a cavity therein, the first stop block 6106 is arranged inside the cavity, and the first stop block 6106 is capable of moving vertically. The first stop block 6106 may move vertically in the first direction. In the practical application process of the laundry treatment device, the position of the spraying mechanism of the spraying device 6200 relative to the filter screen 601 may be set as a first position, i.e., the spraying mechanism and the filter screen 601 are arranged in parallel at an interval in the first direction, and the specific distance of the parallel interval may be adjusted according to different air outlet ducts 1300. With continued reference to FIG. 20(b), the first stop block 6106 may first block some lower spray holes 6104, such that on the one hand, the spray water pressure of the upper spray holes 6104 may be higher to achieve the maximum cleaning effect on the portion part of the filter screen 601, and on the other hand, in the process of cleaning the portion part of the filter screen 601, some waddings and debris at the lower portion of the filter screen 601 may be taken away by filtering water. After waddings and debris at the upper portion of the filter screen 601 are completely cleaned up, the first stop block 6106 moves down slowly to expose more spray holes 6104, so as to further remove waddings and debris in the middle of the filter screen 601 and at the lower portion of the filter screen 601 by flushing. Finally, the filter screen 601 may be cleaned under different water pressures. Specifically, the number of the spray holes 6104 through which the fluid can be sprayed (the water spray quantity), the speed of the spray fluid in the spray holes 6104 (the water spray speed) and the pressure of the spray fluid in the spray holes 6104 (the water spray pressure) can be controlled by providing a faucet / water valve.

[0158] In this embodiment, the water spray quantity, the water spray speed, the water spray pressure and the spraying angle of the spraying mechanism can be adjusted, which enhances the cleaning effect of the spraying mechanism on the filter screen 601.

[0159] In an embodiment, the filter screen 601 includes a first surface and a second surface opposite to each other, and the airflow is first in contact with the first surface (the filtering surface 6011) of the filter screen 601. The spraying mechanism is arranged on the second surface (the non-filtering surface 6012) side and faces the filter screen 601.

[0160] In an embodiment, the spraying mechanism is located on a first plane formed by the first direction and the second direction, and an angle between the first plane and a plane where the filter screen 601 is located is less than 90°. For example, the first plane is parallel to the plane where the filter screen 601 is located, and at this time, no contact exists between the spraying mechanism and the filter screen 601. When the angle between the first plane and the plane where the filter screen 601 is located is less than 90° and more than 0°, an end of the filter screen 601 close to the laundry accommodating apparatus (i.e., a lower end of the spraying mechanism) may be in contact with the spraying mechanism.

[0161] In an embodiment, the distance between the spraying mechanism and the filter screen 601 ranges from 0.4 cm to 1 cm. For example, the distance between the spraying mechanism and the filter screen 601 may be set to 0.4 cm, 0.54 cm, 0.65 cm, 0.84 cm, 0.93 cm, 1 cm or the like. The distance between the spraying mechanism and the filter screen 601 provided in this embodiment is reasonably designed with reference to the parameters such as a spraying distance of the spraying mechanism and spatial arrangement of the laundry treatment device.

[0162] In an embodiment, as shown in FIG. 21, FIG. 21(a) illustrates a front side of the spray head 6103, i.e., a side of the spray head 6103 facing the filter screen 601. The spray head 6103 may be provided with multiple rows / columns of spray holes 6104. The spray holes 6104 may be arranged vertically row by row, and the spray holes 6104 may also be arranged horizontally column by column. In the first direction, the shortest distance between every two adjacent spray holes 6104 is d3. In the second direction, the shortest distance between every two adjacent spray holes 6104 is d4. The values of d3 and d4 may be within the same range. In FIG. 21(b), a direction facing paper is the first direction. An angle at which the spray hole 6104 moves in the second direction is a second angle β. On the premise that the width of the filter screen 601 is determined, the range of the second angle β may be less than that of the first angle α. For example, the second angle β may be set to 3° to 40°.

[0163] In this embodiment, the spraying mechanism includes a plurality of spray holes 6104 for spraying water flows. The spray holes 6104 may be arranged vertically row by row, or horizontally column by column. A displacement of the spraying mechanism in the first direction is greater than or equal to a minimum distance between two spray holes 6104. An angle (the first angle α and / or the second angle β) at which the spraying mechanism swings in the second direction / at which the spraying mechanism rotates around the rotation axis may enable the spraying fluid to reach an edge of the filter screen 601 in the length and / or width direction. In an embodiment, the spraying fluid of the spraying mechanism covers at least 80% of the area of the filter screen 601. In an embodiment, the spraying fluid of the spraying mechanism covers at least 90% of the length of the filter screen 601, or at least 90% of the width of the filter screen 601.

[0164] In an embodiment, the laundry treatment device further includes a driving motor 6101 and a gearbox 6102. The driving motor 6101 drives the gearbox 6102 to realize movement of the spraying mechanism along its own length direction. The driving motor 6101 drives the gearbox 6102 to realize the rotation of the spraying mechanism in a direction perpendicular to its own length direction.

[0165] In an embodiment, the air outlet duct 1300 includes a first end portion 1301 close to the laundry accommodating apparatus and a second end portion 1302 close to the drying apparatus 2000, and the filter screen 601 is arranged in a manner of crossing the first end portion 1301 and the second end portion 1302 of the air outlet duct 1300.

[0166] In this embodiment, if the air outlet duct 1300 is of a cylindrical structure, the filter screen 601 is of an oval net structure with a second hole 6013. The filter screen 601 crosses the first end portion 1301 and the second end portion 1302 of the air outlet duct 1300. Specifically, there is a contact surface between the filter screen 601 and a pipe wall of the first end portion 1301, and there is also a contact surface between the filter screen 601 and a pipe wall of the second end portion 1302. In this embodiment, the filter screen 601 is arranged in such a way that the airflow in the air outlet duct 1300 may be sufficiently filtered.

[0167] In a group of embodiments, the present application also provides a laundry treatment device. The laundry treatment device includes a laundry accommodating apparatus, a drying apparatus 2000 and an air outlet duct 1300. The air outlet duct 1300 is in communication with the laundry accommodating apparatus and the drying apparatus 2000, and is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus 2000.

[0168] The laundry accommodating apparatus includes an inner tub and an outer tub. The inner tub is driven by a driving motor 6101 to rotate. The inner tub is provided with water and air permeable holes. The outer tub is impermeable to water and air, and the outer tub is provided with an air outlet. An air inlet of the air outlet duct 1300 is arranged on a rear wall of the outer tub, and an air outlet of the air outlet duct 1300 is arranged on a side wall of the outer tub, so as to ensure the airtightness between the air outlet duct 1300 and the outer tub and save the space of the laundry accommodating apparatus. The air outlet of the air outlet duct 1300 is butted to an air inlet of the laundry accommodating apparatus. The air inlet of the air outlet duct 1300 is butted to an air outlet of the laundry accommodating apparatus.

[0169] The air circulation process in the laundry accommodating apparatus may include: high-humidity air in the inner tub enters the outer tub through the water and air permeable hole of the inner tub, reaches a filter screen 601 in the air outlet duct 1300 through the air inlet of the air outlet duct 1300 arranged on the rear wall of the outer tub, and then enters the air outlet of the air outlet duct 1300 arranged on the side wall of the outer tub to reach the drying apparatus after waddings and debris are filtered out by means of the filter screen 601, and the high-humidity air is filtered by the drying apparatus 2000 into high-temperature dry air which then enters the inner tub.

[0170] In an embodiment, the inner tub is a first cylinder. The outer tub is a second cylinder. The diameter of the second cylinder is greater than that of the first cylinder. The central axes of the first cylinder and the second cylinder may coincide. The air outlet duct 1300 is hermetically installed on the rear wall of the outer tub. The rear wall of the outer tub, the air outlet duct 1300 and the side wall of the outer tub jointly form an air outlet channel. The rear wall of the outer tub is a plane, and the side wall of the outer tub is an arc surface.

[0171] In an embodiment, as shown in FIG. 15, the air outlet duct 1300 includes a vertical passage in communication with the drying apparatus 2000 and an arc passage in communication with the laundry accommodating apparatus. The filter screen 601, when arranged in the air outlet duct 1300, may be arranged only in the vertical passage, or in both the vertical passage and the arc passage.

[0172] In an embodiment, the radian of the arc passage is less than or equal to the radian of a side surface of the laundry accommodating apparatus, which can ensure that the air outlet duct 1300 is completely arranged on the rear wall of the outer tub.

[0173] In an embodiment, the filter screen 601 is arranged inside the air outlet duct 1300 to filter the airflow, and the filter screen 601 covers more than half of the length of the vertical passage. In this embodiment, the filter screen 601 is only arranged in the vertical passage, such that the installing and fixing process of the filter screen 601 is simple; and the filter screen 601 installed in the vertical passage may have a larger area than the filter screen 601 installed in the arc passage. Specifically, the filter screen 601 covers more than half of the length of the vertical passage. For example, the filter screen 601 covers four fifths of the length of the vertical passage.

[0174] In an embodiment, the inner tub is a cylinder. The outer tub is a polyhedron, and is preferably a tetrahedron, a pentahedron, a hexahedron, etc. The air outlet duct 1300 is hermetically installed on the rear wall or the side wall of the outer tub.

[0175] When the air outlet duct 1300 is installed on the side wall of the outer tub, the air outlet duct 1300 is installed on one side surface of the side wall of the outer tub. For example, when the outer tub is a pentahedron, the rear wall of the outer tub is a bottom surface of the pentahedron, and a surface opposite to the rear wall of the outer tub is another bottom surface of the pentahedron, corresponding to a laundry access port of the laundry accommodating apparatus. The air outlet duct 1300 is installed on one of the five side wall surfaces of the outer tub. The rear wall of the outer tub, the air outlet duct 1300 and the side wall of the outer tub jointly form a closed air outlet channel.

[0176] In a group of embodiments, the present application also provides a laundry treatment device. The laundry treatment device includes a laundry accommodating apparatus, a drying apparatus 2000, a water supply assembly 3000, an air outlet duct 1300 and a filter screen 601. The air outlet duct 1300 is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus 2000.

[0177] The filter screen 601 is arranged between an air outlet of the laundry accommodating apparatus and an air inlet of the drying apparatus 2000 to filter the airflow. The water supply assembly 3000 includes at least a first water supply passage and a second water supply passage. The first water supply passage supplies water to the laundry accommodating apparatus by passing through a detergent box, and the second water supply passage supplies water to the laundry accommodating apparatus by passing through the filter screen 601. A drum water supply port 3200 (a water supply port of the laundry accommodating apparatus) in the water supply assembly 300 is in communication with the first water supply passage. A filter screen water supply port 3300 in the water supply assembly 300 is in communication with the second water supply passage.

[0178] In at least the same water supply process, both the first water supply passage and the second water supply passage supply water. The laundry treatment device may include one or more of a washing operation, a rinsing operation and a drying operation. Specifically, the washing operation may include a first washing stage and / or a second washing stage. The rinsing operation may include a first rinsing stage and / or a second rinsing stage (a final rinsing stage). The drying operation may include a heating stage, a main drying stage and a cooling stage. For example, in the washing operation, water is supplied by the first water supply passage after weighing and adding a detergent according to a weighing result, so as to wash the added detergent to the laundry accommodating apparatus. It may also be provided that the second water supply passage and the first water supply passage are activated simultaneously, or it may be provided that the second water supply passage is activated after the first water supply passage is activated for a period of time. After the detergent is completely rinsed to the laundry accommodating apparatus, the first water supply passage is closed, and other water required in the laundry accommodating apparatus is all supplied by the second water supply passage.

[0179] For example, in the second rinsing stage or the final rinsing state, water is supplied by the first water supply passage after weighing and adding softener according to a weighing result, so as to wash the added softener to the laundry accommodating apparatus. It may also be provided that the second water supply passage and the first water supply passage are activated simultaneously, or it may be provided that the second water supply passage is activated after the first water supply passage is activated for a period of time. After the softener is completely washed to the laundry accommodating apparatus, the first water supply passage is stopped, and other water required in the laundry accommodating apparatus is all supplied by the second water supply passage.

[0180] In this embodiment, by providing the first water supply passage and the second water supply passage, on the one hand, the water feeding time of the laundry accommodating apparatus is shortened, and the water supply efficiency of the laundry accommodating apparatus is improved; and on the other hand, the second water supply passage supplies water to the laundry accommodating apparatus through the filter screen 601, and the filter screen 601 may be cleaned while water is supplied, such that the following situation is avoided: the drying performance of the system is affected by blockage of the filter screen 601.

[0181] In an embodiment, the filter screen 601 is arranged between an air outlet of the laundry accommodating apparatus and an air inlet of the drying apparatus 2000 to filter the airflow. The second water supply passage supplies water to the laundry accommodating apparatus through the filter screen 601. Therefore, the diameter of the second water supply passage may be set larger. For example, the diameter of the second water supply passage may be greater than that of the first water supply passage. In this way, within the same period of time, the amount of water supplied by the second water supply passage is greater than the amount of water supplied by the first water inlet passage. In addition, the first water supply passage is stopped after at least one of the detergent and / or the softener is completely rinsed to the laundry accommodating apparatus, such that the amount of water supplied by the second water supply passage is greater than the amount of water supplied by the first water supply passage.

[0182] In this embodiment, by providing the second water supply passage, the amount of water supplied by the first water supply passage is reduced and thus the service time of the first water supply passage is prolonged; and the amount of water supplied by the second water supply passage is greater than the amount of water supplied by the first water inlet passage, such that more water for washing enters from the second water supply passage to complete full cleaning of the filter screen 601.

[0183] In an embodiment, if it is unnecessary to feed the detergent and / or the softener into the laundry accommodating apparatus in a certain laundry treatment process, it is unnecessary to flush a feeding passage and to activate the first water supply passage. Water required in the laundry accommodating apparatus may be supplied only by the second water supply passage.

[0184] In an embodiment, the water supply quantity, the water supply sequence and the water supply time of the first water supply passage and the second water supply passage are all adjustable. When there is less laundry, it may be provided that the demand for washing water can be met by a water feeding process in which the detergent and / or the softener are / is washed into the laundry accommodating apparatus from the first water supply passage. When there is less laundry, it may also be provided that the demand for washing water can be met by feeding water from the first water supply passage and the second water supply passage simultaneously until the first water supply passage completely washes the detergent and / or the softener into the laundry accommodating apparatus.

[0185] In an embodiment, in the washing stage, the water supply assembly 3000 is configured to supply water to the laundry accommodating apparatus through the second water supply passage, so as to flush the filter screen 601 while providing water for washing.

[0186] In an embodiment, in the rinsing stage, the water supply assembly 3000 is configured to supply water to the laundry accommodating apparatus through the second water supply passage, so as to flush the filter screen 601 while providing water for rinsing.

[0187] In an embodiment, in the cooling stage of the drying operation or after complete cooling, the water supply assembly 3000 is configured to supply water to the laundry accommodating apparatus through the second water supply passage to flush the filter screen 601 so as to prevent the situation that due to an excessively long time interval for next washing, waddings and debris are drying out on the filter screen 601 to produce unpleasant smell or high difficulty in cleanup.

[0188] In an embodiment, the water supply assembly 3000 is further configured to activate the second water supply passage to flush the filter screen 601 when it is detected that the filter screen 601 is blocked in the main drying stage. The specific method for detecting whether the filter screen 601 is blocked may include: providing a pressure sensor to detect the change of pressure of the air outlet duct 1300, providing a temperature sensor to detect the change of temperature of the air inlet and / or the air outlet of the laundry accommodating apparatus, providing a temperature sensor to detect the change of temperature of an inlet and an outlet of the condenser 2600, or providing a load current detector to detect the change of a current of a fan.

[0189] In the above-mentioned embodiment, the water supply assembly 3000 of the laundry treatment device can activate the second water supply passage in different stages to, on the one hand, supply water to the laundry accommodating apparatus, and on the other hand, to flush the filter screen 601. Owing to above design in this embodiment, waddings and debris adsorbed / stuck onto the filter screen 601 in different stages can be removed immediately, which prevents the filter screen 601 from being blocked or generating unpleasant smell due to untimely cleanup, and hence improves the user experience. The second water supply passage may be activated in different stages, ensuring that the filter screen 601 can play a sufficient filtering role in all stages of operation of the apparatus and improving the operation efficiency of the apparatus.

[0190] In an embodiment, a diversion device is arranged inside the second water supply passage. In this embodiment, the diversion device causes water that flushes the filter screen 601 not to flow back to the laundry accommodating apparatus, but to directly flow to a drainage outlet through a drainage passage.

[0191] In this embodiment, in the main drying stage, under the control of the diversion device, a water flow is directly guided into the drainage passage without passing through the laundry accommodating apparatus. In this embodiment, different water supply strategies are provided to prevent water that flushes the filter screen 601 from flowing back to the laundry accommodating apparatus again, and prevent waddings and debris that have been filtered out by the filter screen 601 from entering the laundry accommodating apparatus again, thereby indirectly improving the filtering efficiency of the filter screen 601.

[0192] In a group of embodiments, the present application also provides a control method of a laundry treatment device. The laundry treatment device includes a laundry accommodating apparatus, a drying apparatus 2000, a water supply assembly 3000 and an air outlet duct 1300 connected to the laundry accommodating apparatus and the drying apparatus 2000. The air outlet duct 1300 is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus 2000.

[0193] A filter screen 601 is arranged inside the air outlet duct 1300, and the filter screen 601 is arranged inside the air outlet duct 1300 to filter the airflow. The water supply assembly 3000 at least includes a first water supply passage and a second water supply passage. The first water supply passage supplies water to the laundry accommodating apparatus by passing through a detergent box. The second water supply passage supplies water to the laundry accommodating apparatus by passing through the filter screen 601.

[0194] The control method of the laundry treatment device includes: in at least the same water supply process, controlling a first water inflow amount of the first water supply passage to be less than or equal to a second water inflow amount of the second water supply passage. For example, in a washing stage, the total water supply quantity of the laundry accommodating apparatus is V, and the first water inflow amount V1 (e.g., V1=2 / 5*V) from the first water supply passage is controlled to be less than the second water inflow amount V2 (e.g., V2 = 3 / 5*V) from the second water supply passage. Provided that V1 < V2, V1 and V2 may also have other values.

[0195] In this embodiment, by providing that the first water inflow amount is less than or equal to the second water inflow amount, on the one hand, feeding water through the two passages simultaneously shortens the water feeding time of the laundry accommodating apparatus, and improves the water supply efficiency of the laundry accommodating apparatus; and on the other hand, the filter screen 601 may be cleaned while the second water supply passage with a greater water inflow amount supplies water to the laundry accommodating apparatus, so that the drying performance of the system is avoided from being affected by blockage of the filter screen 601.

[0196] In an embodiment, the second water inflow amount is greater than 50% of the total water inflow amount of the laundry treatment device in a single water feeding process, i.e., V2 > 50%*V. When only the first water supply passage and the second water supply passage supply water to the laundry accommodating apparatus, the second water inflow amount of the second water supply passage is more than 50%. It is of course not excluded that in other embodiments, a third water supply passage is also provided. The amount of water supplied by the third water supply passage to the laundry accommodating apparatus is a third water inflow amount. At this time, the relationship among the first water inflow amount, the second water inflow amount and the third water inflow amount is set by weighing the needs of the three water supply passages.

[0197] In this embodiment, by setting different water inflow amounts for the first water supply passage and the second water supply passage 6105, not only is the function of flushing the detergent box achieved, but also the filter screen 601 can be cleaned to the maximum extent / for the longest period of time, such that the function of the filter screen 601 in the laundry treatment device is optimized.

[0198] In an embodiment, in a washing operation, the first water inflow amount is determined according to the amount of a detergent added before washing. In a first rinsing stage, the first water inflow amount is 0. At this time, all water supplied to the laundry treatment device passes through the second water supply passage, i.e., the second water inflow amount is V. In a second rinsing stage, the first water inflow amount is determined according to the amount of softener added before rinsing.

[0199] In this embodiment, during water supply of different laundry treatment processes, the second water inflow amount is greater than the first water inflow amount, which can achieve a long cleaning time, a high cleaning flow rate and a large cleaning flow of the filter screen 601, such that the filter screen 601 can be cleaned more thoroughly.

[0200] In an embodiment, the water supply assembly 3000 further includes a diversion device arranged in the second water supply passage.

[0201] In a main drying stage, through the diversion device, a water flow in the second water supply passage is controlled to be completely directed into a drainage passage without passing through the laundry accommodating apparatus and secondary filtering can also be avoided to improve the filtering efficiency of the filter screen 601; and meanwhile moisture of filtered water can be prevented from infiltrating dried laundry, which improves the drying efficiency.

[0202] In a group of embodiments, the present application also provides a control method of a laundry treatment device. The laundry treatment device includes a laundry accommodating apparatus, a drying apparatus 2000, a water supply assembly 3000 and an air outlet duct 1300 connected to the laundry accommodating apparatus and the drying apparatus 2000. The air outlet duct 1300 is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus 2000.

[0203] A filter screen 601 is arranged inside the air outlet duct 1300, and the filter screen 601 is arranged inside the air outlet duct 1300 to filter the airflow. The water supply assembly 3000 at least includes a first water supply passage and a second water supply passage. The first water supply passage supplies water to the laundry accommodating apparatus by passing through a detergent box. The second water supply passage supplies water to the laundry accommodating apparatus by passing through the filter screen 601.

[0204] The control method of the laundry treatment device includes: S1, determining whether to add detergent and / or softener; S2, activating the first water supply passage to rinse the detergent and / or softener; and S3, at the end of or after flushing by the first water supply passage, activating the second water supply passage to flush the filter screen 601.

[0205] In this embodiment, three different time nodes at which the second water supply passage is activated are provided, which can be applied to different water supply processes. Activating the second water supply passage at the three different time nodes may achieve different effects respectively. (1) Activating the second water supply passage before S1 can shorten the water supply time of the laundry accommodating apparatus and increase the cleaning time of the filter screen 601. (2) Activating the second water supply passage while activating the first water supply passage allows for simultaneously paying attention to a first water inflow amount and a second water inflow amount, facilitating dynamic adjustment of the water feeding rates of the two water supply passages. (3) Activating the second water supply passage while stopping the first water supply passage allows for controlling the water feeding process of the second water supply passage after determining the first water inflow amount, which prevents the sum of the first water inflow amount and the second water inflow amount of being greater than the total water inflow amount in the laundry treatment process.

[0206] In a group of embodiments, the present application also provides a laundry treatment device. The laundry treatment device includes a laundry accommodating apparatus, a drying apparatus 2000, a water supply assembly 3000 and an air outlet duct 1300 connected to the laundry accommodating apparatus and the drying apparatus 2000. The air outlet duct 1300 is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus 2000.

[0207] A filter screen 601 is arranged inside the air outlet duct 1300, and the filter screen 601 is arranged inside the air outlet duct 1300 to filter the airflow. The laundry treatment device further includes a water film judgement device and a water film removal device.

[0208] The water film judgement device is configured to detect the change of a system parameter in the laundry treatment device and determine whether there is a water film on the filter screen 601 according to the change of the system parameter. The system parameter includes one or more of a temperature, pressure and a current. The water film removal device is configured to remove the water film from the filter screen.

[0209] The water film judgement device is configured to detect and determine whether there is a water film on the filter screen 601. The water film judgement device may be implemented in various forms. For example, the water film judgement device may detect the system parameters in the treatment apparatus, such as a temperature, pressure, a current and power of a fan. There are many temperatures in the laundry treatment device, and the specific position at which the temperature is used as the basis for detecting whether a water film is formed on the filter screen needs to be specially designed by the inventor to achieve accurate detection. The water film removal device is configured to be started when it is detected that there is a water film on the filter screen 601, so as to remove the water film from the filter screen punctually. The water film removal device may also be implemented in many different forms. For example, the water film may be removed by active movement of the filter screen 601, with the assistance of other devices, or by an existing device of the apparatus additionally.

[0210] In this embodiment, the water film judgement device and the water film removal device are provided to detect the filtering state of the filter screen 601 in real time during operation of the apparatus, and once the water film appears on the filter screen, it can be discovered punctually and removed quickly, so as to ensure that the filter screen 601 is always working in an effective filtering state.

[0211] In an embodiment, the water film judgement device is a temperature sensor, which is arranged at an air outlet of the laundry accommodating apparatus and configured to detect the temperature at the air outlet of the laundry accommodating apparatus and determine whether there is a water film on the filter screen 601 according to the temperature. In this embodiment, it may be provided that when the temperature near the air outlet of the laundry accommodating apparatus changes by more than 60 °C, it is determined that there is a water film on the filter screen 601, which needs to be removed.

[0212] In an embodiment, the laundry treatment device further includes a condensing module 40, and the water film judgement device is a temperature sensor, which is arranged at an air inlet and / or an air outlet of the condensing module 40 and configured to detect the temperature at the air inlet and / or the air outlet of the condensing module 40, and determine whether there is a water film on the filter screen 601 according to the change of the temperature at the air inlet and / or the air outlet of the condensing module 40.

[0213] In an embodiment, the drying apparatus 2000 includes a circulating module 10, a moisture desorption module 20, a regenerating module 30 and a condensing module 40. The circulating module 10 includes a circulating fan 2100 for sucking a humid airflow from the laundry treatment device and forming circulating airflow. The moisture desorption module 20 includes a moisture adsorption and desorption rotary disk 2201 for absorbing moisture in the circulating airflow, such that the circulating airflow passing through the moisture adsorption and desorption rotary disk 2201 becomes a dry airflow. The regenerating module 30 includes a regenerating fan 2400 and a regenerative heating module 2500. The regenerative heating module 2500 is configured to heat the moisture adsorption and desorption rotary disk 2201 and regenerating airflow. The condensing module 40 is communicated to a regenerating air outlet of the regenerating fan 2400 and configured to condense the high-temperature and high-humidity regenerating airflow output from the regenerating air outlet to form low-temperature dry airflow. On the moisture adsorption and desorption rotary disk 2201, a zone where the circulating airflow flows through is a moisture desorption portion, and a zone where the regenerative airflow flows through is a regenerating zone.

[0214] The water film judgement device is a temperature sensor, which is arranged at the air inlet and / or the air outlet of the condensing module 40 and configured to detect the temperature at the air inlet and / or the air outlet of the condensing module 40 and determine whether there is a water film on the filter screen 601 according to the change of the temperature at the air inlet and / or the air outlet of the condensing module 40. In this embodiment, if a water film is formed on the filter screen 601, circulation of the airflow is limited, and the temperature of the circulating airflow (the circulating airflow entering the laundry accommodating apparatus) rises; and when the temperature of the moisture desorption portion rises, the temperature of the regenerating zone (with the regenerative heating module 2500) also rises, and the temperature of airflow entering the condenser 2600 and the temperature of airflow discharging from the condenser 2600 both rise. In this embodiment, it may be provided that when the temperature near the air inlet of the condenser 2600 is greater than or equal to a certain temperature limit, for example, 100°C, it is determined that there is a water film on the filter screen 601, which needs to be removed. It may also be provided that when the temperature near the air outlet of the condenser 2600 is greater than or equal to a certain temperature limit, for example, 90°C, it is determined that there is a water film on the filter screen 601, which needs to be removed.

[0215] In an embodiment, the water film judgement device is a load current detector for detecting the magnitude of a load current of the circulating fan 2100. In this embodiment, in a constant-speed mode, when the load current of the circulating fan 2100 decreases, it is determined that there is a water film on the filter screen, which needs to be removed. In a constant-power mode, when the load current of the circulating fan 2100 increases, it is determined that there is a water film on the filter screen, which needs to be removed.

[0216] In an embodiment, the water film judgement device is a pressure sensor arranged inside the air outlet duct 1300 between the filter screen 601 and the drying apparatus 2000. In this embodiment, the position of the pressure sensor may be set in many different ways. The water film judgement device is configured to detect whether a pressure change rate in the air outlet duct 1300 reaches a preset threshold, for example, whether the pressure change rate reaches a certain limit, e.g., 20%.

[0217] In an embodiment, the water film removal device is a vibration starter of the filter screen 601, which is connected to the filter screen 601 and configured to remove the water film by controlling the vibration frequency of the vibration starter of the filter screen 601. In this embodiment, the vibration starter of the filter screen 601 may be of a sheet structure and formed on the non-filtering surface of the filter screen 601. The vibration starter of the filter screen 601 includes a control motor and a vibration starting sheet attached to the non-filtering surface of the filter screen 601. The vibration starting sheet includes a third hole of which the aperture is greater than that of the second hole 6013. When it is detected that there is a water film on the filter screen, the control motor of the vibration starter of the filter screen 601 starts to control, at a specific frequency, the vibration starting sheet to vibrate, so as to remove the water film from the filter screen 601. In this embodiment, the filter screen 601 may resonate at the same frequency with the vibration starting sheet, achieving a good effect of removing the water film.

[0218] In an embodiment, the water film removal device is a power applicator. The power applicator includes a power generating module and at least one power ball. The power generating module is connected to the at least one power ball and configured to generate power with different frequencies. The power ball and the filter screen 601 are arranged at an interval, and the distance between the power ball and the filter screen 601 is related to the distance by which the power ball moves. The distance by which the power ball moves is greater than or equal to the distance therebetween.

[0219] When it is detected that there is a water film on the filter screen 601 and the power applicator is started, the power ball is momentarily in contact with a surface (the non-filtering surface) of the filter screen, and a force applied by the power ball to the filter screen 601 may break through the water film of the filter screen 601, so as to remove the water film.

[0220] In a group of embodiments, the present application also provides a laundry treatment device. The laundry treatment device, further includes a water film judgement device.

[0221] The water film judgement device is configured to detect the change of a system parameter in the laundry treatment device and determine whether there is a water film on the filter screen 601 according to the change of the system parameter. The system parameter includes one or more of a temperature, pressure and a current.

[0222] When the water film judgement device detects that there is a water film on the filter screen 601, a fan and a heater in the laundry treatment device are configured to be in a working mode for removal of the water film.

[0223] In this embodiment, the water film is removed from the filter screen by using a structural member of the laundry treatment device itself, which can reduce modification to the laundry treatment device, save the design space, increase the function of the structural member of the laundry treatment device, and effectively remove the water film from the filter screen.

[0224] In an embodiment, the fan in the laundry treatment device includes a circulating fan 2100 for sucking a humid airflow from the laundry treatment device and forming circulating airflow. When the water film judgement device detects that there is a water film on the filter screen 601, the circulating fan 2100 is configured to be in a working move for removal of the water film. In this embodiment, in the working mode for removal of the water film, the circulating fan 2100 runs at higher power or maximum power to form stronger airflow to eliminate the water film.

[0225] In an embodiment, in the working mode for removal of the water film, the circulating fan 2100 causes the airflow to flow in a predetermined direction, and the predetermined direction is a circulating direction in which the airflow flows through the laundry accommodating apparatus, the filter screen 601, the drying apparatus 2000 and the laundry accommodating apparatus in sequence. In this embodiment, the circulating fan 2100 can only rotate in a direction in which normal working airflow is generated, so as to prevent waddings and debris in the laundry accommodating apparatus from being discharged by reverse airflow generated by reverse rotation of the circulating fan 2100 to the drying apparatus from the air inlet of the laundry accommodating apparatus and thus being adsorbed by the moisture adsorption and desorption rotary disk 2201.

[0226] In an embodiment, the drying apparatus 2000 includes a moisture desorption module 20 and a regenerating module 30. The moisture desorption module 20 includes a moisture adsorption and desorption rotary disk 2201 for absorbing moisture in the circulating airflow. The regenerating module 30 includes a regenerating fan 2400 and a regenerative heating module 2500.

[0227] In some embodiments, the drying apparatus 2000 further includes a housing, and the housing covers and fixes all components of the drying apparatus 2000, such that the drying apparatus 2000 forms an integral module. The housing may be provided as an upper housing 2820 and a lower housing 2700. In some embodiments, the housing includes a first housing (the lower housing 2700) and a second housing (the upper housing 2820) for accommodating the moisture adsorption and desorption rotary disk 2201, two separators (e.g., first separators 2725-1 and 2725-2 shown in FIG. 10) are arranged on the first housing, and two separators (e.g., the second separators 2822-1 and 2822-2 shown in FIG. 11) are arranged on the second housing. A stub shaft 2721 and an accommodating portion for installation of the stub shaft 2721 are arranged at the center of the first housing (the lower housing 2700), and one separator 2725-1 of the first housing may be provided to extend from an inner peripheral wall of the housing to the accommodating portion of the housing. The other separator 2725-2 of the first housing (the lower housing 2700) may be provided to extend from another position of the inner peripheral wall of the housing to the accommodating portion of the housing. The at least two separators do not intersect with the stud shaft 2721, such that an internal space formed by abutment of the first housing and the second housing may be divided into two spaces, namely, a first space and a second space, or a moisture absorbing space and a regenerating space, or the moisture absorbing zone and the regenerating zone. In some embodiments, the accommodating portion is annular, and the at least two separators are arranged in a manner of being tangent to the periphery of the annular accommodating portion.

[0228] The moisture adsorption and desorption rotary disk 2201 rotates around an axis of rotation under the action of a driving portion 2300 of the moisture adsorption and desorption rotary disk. The moisture adsorption and desorption rotary disk 2201 can fully absorb moisture in the airflow from the laundry accommodating apparatus when rotating to a moisture-absorbing zone; and can fully desorb the moisture absorbed in the moisture adsorption and desorption rotary disk 2201 when rotating to the regenerating zone, thereby restoring the moisture-absorbing function of the moisture adsorption and desorption rotary disk 2201.

[0229] The regenerating fan 2400 forms regenerating airflow for restoring the moisture adsorption and desorption rotary disk 2201 to a dry state. The moisture adsorption and desorption rotary disk 2201 has a zone where the circulating airflow flows through as the moisture desorption zone, and a zone where the regenerating airflow flows through as the regenerating zone. The regenerative heating module 2500 is configured to heat the moisture adsorption and desorption rotary disk 2201 in the regenerating zone and the regenerating airflow.

[0230] The laundry treatment device further includes a first heater for heating washing water in the laundry accommodating apparatus.

[0231] The heater in the laundry treatment device includes a first heater and / or the regenerative heating module 2500. When the water film judgement device detects that there is a water film on the filter screen 601, at least one of the first heater and the regenerative heating module 2500 is configured to be in the working mode for removal of the water film.

[0232] In the working mode for removal of the water film, at least one of the first heater and the regenerative heating module 2500 runs at higher power or maximum power to increase the temperature in the air outlet duct 1300 and to further improve the water film removal efficiency.

[0233] It can be understood that when the water film needs to be removed, the fan and the heater of the laundry treatment device itself in the above embodiment, the vibration starter of the filter screen 601 in the above embodiment and the power applicator in the above embodiment may be used separately or be used in conjunction with each other to enhance the effect of removing the water film from the filter screen 601.

[0234] In a group of embodiments, the present application also provides a control method of a laundry treatment device. The laundry treatment device includes a laundry accommodating apparatus, a drying apparatus 2000 and an air outlet duct 1300 connected to the laundry accommodating apparatus and the drying apparatus 2000. The air outlet duct 1300 is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus 2000.

[0235] A filter screen 601 is arranged inside the air outlet duct 1300, and the filter screen 601 is arranged inside the air outlet duct 1300 to filter the airflow. The control method of the laundry treatment device includes: detecting the change of a system parameter in the laundry treatment device, the system parameter including one or more of a temperature, pressure and a current; determining whether there is a water film on the filter screen 601 according to the change of the system parameter; controlling a circulating fan 2100 to work at higher power or maximum power when it is detected that there is a water film on the filter screen 601; and / or, controlling the regenerative heating module 2500 to work at higher power or maximum power when it is detected that there is a water film on the filter screen 601.

[0236] In an embodiment, the laundry treatment device further includes a water film removal device. When it is detected that there is a water film on the filter screen, the water film removal device is controlled to vibrate at a first frequency so as to remove the water film.

[0237] In this embodiment, the water film removal device may be implemented in such a way that the filter screen 601 actively vibrates or the filter screen 601 is rapped through a power apparatus. The magnitude of the first frequency is adjustable. The first frequency is adjusted based on the degree of the change of the system parameter.

[0238] A group of embodiments of the present application provide a laundry treatment device. The laundry treatment device includes a laundry accommodating apparatus 1100 and a drying apparatus 2000. The drying apparatus 2000 includes a housing, a moisture adsorption and desorption rotary disk 2201, a driving portion 2300 of the moisture adsorption and desorption rotary disk, a circulating fan 2100, a regenerating fan 2400, a heating module 2500, a condensing module 1600, a memory and a processor.

[0239] The circulating fan 2100, the regenerating fan 2400, the moisture adsorption and desorption rotary disk 2201, the heating module 2500, the condenser 2600, the memory and the processor are in communication connection with each other, the memory stores a computer instruction, and the processor, by executing the computer instruction, carries out the control method of the laundry treatment device in any one of the above embodiments.

[0240] A group of embodiments of the present application provide a computer-readable storage medium having an application stored thereon, wherein the application, when executed by a processor, implements the control method of the laundry treatment device in any one of the above embodiments.

[0241] In any group / anyone / any embodiment mentioned above, one / more features involved may be combined with one another to improve the drying efficiency of a drying apparatus.

[0242] Described above are only the preferred embodiments of the present application, but not intended to limit the present application. Various changes and modifications may be made to the present application for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present application should be included within the scope of the present application. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it is not required to be further defined or explained in subsequent drawings.

[0243] Described above are merely specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any variations or substitutions that are readily conceivable by those skilled in the art within the technical scope of the present application should fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection defined by the claims.

Claims

1. A laundry treatment device, comprising a laundry accommodating apparatus, a drying apparatus, a water supply assembly, an air outlet duct and a filter screen, wherein the air outlet duct is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus; the filter screen is arranged between an air outlet of the laundry accommodating apparatus and an air inlet of the drying apparatus to filter the airflow; the water supply assembly at least comprises a first water supply passage and a second water supply passage, the first water supply passage supplies water to the laundry accommodating apparatus by passing through a detergent box, and the second water supply passage supplies water to the laundry accommodating apparatus by passing through the filter screen; and the laundry treatment device is characterized in that in at least a same water supply process, both the first water supply passage and the second water supply passage supply water to the laundry accommodating apparatus.

2. The laundry treatment device according to claim 1, characterized in that a water supply amount of the second water supply passage is greater than a water supply amount of the first water supply passage.

3. The laundry treatment device according to claim 1, characterized in that in a washing stage, the water supply assembly is configured to supply water through the second water supply passage, thereby flushing the filter screen while providing water for washing.

4. The laundry treatment device according to claim 1, characterized in that in a rinsing stage, the water supply assembly is configured to supply water through the second water supply passage, thereby flushing the filter screen while providing water for rinsing.

5. The laundry treatment device according to claim 1, characterized in that in a cooling stage of a drying operation or after complete cooling, the water supply assembly is configured to flush the filter screen through the second water supply passage.

6. The laundry treatment device according to claim 1, characterized in that the water supply assembly is further configured to, in a drying operation, activate the second water supply passage to flush the filter screen when the filter screen is detected to be blocked.

7. The laundry treatment device according to claim 5 or 6, characterized in that the drying apparatus further comprises a diversion device arranged in the second water supply passage; and in the drying operation, the diversion device controls a water flow in the second water supply passage to be directly guided into a drainage passage without passing through the laundry accommodating apparatus.

8. The laundry treatment device according to claim 1, characterized in that the second water supply passage is configured to supply water in a washing stage or a rinsing stage, thereby flushing the filter screen while providing water for washing or rinsing.

9. The laundry treatment device according to claim 1, characterized in that the second water supply passage is configured to be activated to flush the filter screen before or after a cooling stage of a drying operation.

10. The laundry treatment device according to claim 1, characterized in that the second water supply passage is configured to be activated to flush the filter screen when the filter screen is detected to be blocked.

11. A control method of a laundry treatment device, characterized in that the laundry treatment device comprises a laundry accommodating apparatus, a drying apparatus, a water supply assembly, and an air outlet duct connected to the laundry accommodating apparatus and the drying apparatus, wherein the air outlet duct is configured to direct airflow from the laundry accommodating apparatus to the drying apparatus; the filter screen is arranged inside the air outlet duct to filter the airflow; the water supply assembly at least comprises a first water supply passage and a second water supply passage, the first water supply passage supplies water to the laundry accommodating apparatus by passing through a detergent box, and the second water supply passage supplies water to the laundry accommodating apparatus by passing through the filter screen; and the control method of the laundry treatment device at least comprises: determining whether to add detergent and / or softener; activating the first water supply passage to rinse the detergent and / or softener; and at an end of flushing by the first water supply passage or after the flushing by the first water supply passage is over, activating the second water supply passage to flush the filter screen.

12. The control method of the laundry treatment device according to claim 11, characterized in< / b> further comprising: controlling a first water inflow amount of the first water supply passage to be less than or equal to a second water inflow amount of the second water supply passage.

13. The control method of the laundry treatment device according to claim 12, characterized in that the second water inflow amount is greater than 50% of a total water inflow amount of the laundry treatment device in a single water intake process.

14. The control method of the laundry treatment device according to claim 11, characterized in that in a washing operation, the first water inflow amount is determined according to an amount of a detergent added before washing; and / or, in a first rinsing stage, the first water inflow amount is 0; and / or, in a second rinsing stage, the first water inflow amount is determined according to an amount of softener added before rinsing.

15. The control method of the laundry treatment device according to claim 11, characterized in that the water supply assembly further comprises a water diversion device arranged in the second water supply passage; and in a main drying stage, the water diversion device controls a water flow in the second water supply passage to be completely guided into a drainage passage without passing through the laundry accommodating apparatus.

Images