Control method of filter screen cleaning of laundry treating apparatus

Abstract

The application provides a control method for filter screen cleaning of a clothes treatment device, the clothes treatment device comprising a shell, an outer tank, a drum and a drying device (40), the drying device comprising an air path shell (50) and a fan (80), the air path shell being provided with a filter screen (57), the clothes treatment device further comprising a cleaning device (60), the control method for filter screen cleaning of the clothes treatment device comprising: a drying device control step (S1), stopping operation of the drying device (40) or reducing the rotating speed of the fan (80); a drum control step (S2), continuously rotating the drum (30) towards a direction; and a filter screen cleaning step (S3), cleaning the filter screen (57) by using the cleaning device (60). According to the application, a control method for filter screen cleaning of a clothes treatment device capable of cleaning the filter screen during the drying process is provided.

Description

TECHNICAL FIELD

[0001] The present invention relates to a control method of filter cleaning of a laundry treating apparatus. BACKGROUND

[0002] In a laundry treating apparatus having a drying function, a large amount of lint can be generated during the drying process. In order to prevent the lint from entering the drying apparatus along with the flow of drying air and adhering to the fan, the heater, etc., a filter for filtering the lint in the drying air is usually provided in the drying apparatus. As the drying apparatus continuously operates, a large amount of lint can be accumulated on the filter, causing an increase in the flow resistance of the drying air.

[0003] In order to clean the lint accumulated on the filter, a cleaning device for cleaning the filter by spraying cleaning water toward the filter is provided. However, if the filter is cleaned during the drying process, there is a risk that the cleaning water enters the drum through the fine holes of the drum, wetting the laundry being dried, and easily causing a decrease in drying efficiency or insufficient drying.

[0004] Therefore, in the conventional laundry treating apparatus, the filter is usually cleaned after the drying course is completed. In this case, since the filter cannot be cleaned in time, a decrease in drying efficiency can be caused. SUMMARY

[0005] Problems to be Solved by the Invention

[0006] The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a control method of filter cleaning of a laundry treating apparatus capable of cleaning a filter during a drying process.

[0007] Means for Solving the Problems

[0008] To achieve the above object, the first technical solution of the present application provides a control method for cleaning a filter screen of a clothes treatment device, wherein the clothes treatment device comprises a housing, an outer tank supported in the housing, a drum rotatably installed in the outer tank for accommodating clothes, and a drying device for drying the clothes in the drum by using heated air, the drying device comprising an air passage housing having an air inlet and an air outlet, the air inlet and the air outlet being respectively connected to an inner cavity of the drum, and a fan for flowing air to guide air in the drum into the air passage housing through the air inlet and guide the heated air into the drum, the air passage housing being provided with a filter screen for filtering lint in the air flowing in the air passage housing, the clothes treatment device further comprising a cleaning device for cleaning the filter screen by spraying cleaning water toward the filter screen, the control method for cleaning the filter screen of the clothes treatment device comprising: a drying device control step of stopping the drying device from operating or reducing a rotating speed of the fan, a drum control step of continuously rotating the drum toward a direction, and a filter screen cleaning step of cleaning the filter screen by using the cleaning device.

[0009] According to the first technical solution, the filter screen is cleaned by using the cleaning device under the condition that the drum is continuously rotated toward a direction, thereby enabling the cleaning water falling to the outer surface of the outer peripheral wall of the drum to flow down to the bottom of the outer tank along the rotating direction of the drum, and further avoiding the cleaning water from flowing into the drum through the pores of the outer peripheral wall of the drum to wet the clothes being dried. By using such a control method, the lint on the filter screen can be timely flushed during the drying process, and the risk of the clothes in the drum being wetted by the flushing water is reduced, thereby improving the drying efficiency of the clothes treatment device as a whole.

[0010] The second technical solution is based on the control method for cleaning the filter screen of the clothes treatment device of the first technical solution, and the starting time of the filter screen cleaning step is not earlier than the starting time of the drying device control step and / or the starting time of the drum control step.

[0011] According to the second technical solution, by making the starting time of the filter screen cleaning step not earlier than the starting time of the drying device control step, it is ensured that the cleaning of the filter screen is started under the condition that the drying device is stopped from operating or the rotating speed of the fan is reduced, thereby avoiding the momentum of the cleaning water for cleaning the filter screen from being weakened due to the action of the fan, and ensuring the cleaning effect of the filter screen.

[0012] In addition, by making the start time of the filter screen cleaning step not earlier than the start time of the drum control step, it is possible to ensure that the cleaning of the filter screen is started on the premise that the drum is continuously rotated in one direction, thereby reliably causing the cleaning water falling onto the outer surface of the outer circumferential wall of the drum to flow down to the bottom of the outer tub along the rotation direction of the drum.

[0013] The third technical solution is, on the basis of the control method for the filter screen cleaning of the laundry treatment device of the first technical solution, the end time of the filter screen cleaning step is not later than the end time of the drying device control step and / or the end time of the drum control step.

[0014] According to the third technical solution, by making the end time of the filter screen cleaning step not later than the end time of the drying device control step, it is possible to ensure that the drying device is stopped or the rotation speed of the fan is reduced during the cleaning of the filter screen, thereby avoiding weakening the momentum of the cleaning water for cleaning the filter screen due to the action of the fan, and ensuring the cleaning effect of the filter screen.

[0015] In addition, by making the end time of the filter screen cleaning step not later than the end time of the drum control step, it is possible to ensure that the drum is continuously rotated in one direction during the cleaning of the filter screen, thereby reliably causing the cleaning water falling onto the outer surface of the outer circumferential wall of the drum to flow down to the bottom of the outer tub along the rotation direction of the drum.

[0016] The fourth technical solution is, on the basis of the control method for the filter screen cleaning of the laundry treatment device of the first technical solution, the drying device further comprises a heater for heating air in the air duct housing, and in the case where the rotation speed of the fan is reduced in the drying device control step, the heater is kept running or stopped.

[0017] According to the fourth technical solution, it is possible to ensure that the filter screen is cleaned on the premise that the rotation speed of the fan is reduced, thereby avoiding weakening the momentum of the cleaning water for cleaning the filter screen due to the action of the fan, and ensuring the cleaning effect of the filter screen. In particular, in the case where the heater is kept running, it is possible to maintain the drying program to a certain extent while cleaning the filter screen, which is beneficial to improving the drying efficiency of the laundry treatment device.

[0018] The fifth technical solution is based on the control method of the filter screen cleaning of the laundry treatment device of the first technical solution, and the drying device further comprises an evaporator for dehumidifying air in the air duct housing, a condenser for heating air in the air duct housing, and a compressor for compressing refrigerant and supplying the compressed refrigerant to the condenser and the evaporator. In the drying device control step, the compressor is kept running or stopped running when the rotating speed of the fan is reduced.

[0019] According to the fifth technical solution, the filter screen can be cleaned under the condition that the rotating speed of the fan is reduced, so that the momentum of the cleaning water for cleaning the filter screen can be prevented from being weakened by the fan, and the cleaning effect of the filter screen can be ensured. In particular, when the compressor is kept running, the drying program can be maintained to a certain extent while the filter screen is being cleaned, which is beneficial to improving the drying efficiency of the laundry treatment device.

[0020] The sixth technical solution is based on the control method of the filter screen cleaning of the laundry treatment device of the first technical solution, and in the drum control step, the rotating speed of the drum is controlled so that the tangential speed of the outermost circumference of the drum approaches the falling speed of the cleaning water after the filter screen is cleaned in the filter screen cleaning step.

[0021] According to the sixth technical solution, by making the tangential speed of the outermost circumference of the drum approach the falling speed of the cleaning water after the filter screen is cleaned, the cleaning water falling onto the outer surface of the outer circumferential wall of the drum can be more reliably caused to flow to the bottom of the outer groove in the rotating direction of the drum, and the cleaning water can be more reliably prevented from flowing into the drum through the pores of the outer circumferential wall of the drum to wet the clothes being dried.

[0022] The seventh technical solution is based on the control method of the filter screen cleaning of the laundry treatment device of the sixth technical solution, and in the drum control step, the rotating speed of the drum is 30 r / min to 300 r / min, and in the filter screen cleaning step, the water flow rate of the cleaning device is 4 mL / min to 12 mL / min.

[0023] According to the seventh technical solution, by setting the rotating speed of the drum and the water flow rate of the cleaning device within the above ranges, the tangential speed of the outermost circumference of the drum can be easily made to approach the falling speed of the cleaning water after the filter screen is cleaned, so that the cleaning water falling onto the outer surface of the outer circumferential wall of the drum can be easily caused to flow to the bottom of the outer groove in the rotating direction of the drum.

[0024] The eighth technical solution is based on the control method of the filter screen cleaning of the laundry treatment device in any one of the first to seventh technical solutions, and the drying device further comprises a wind volume detection sensor arranged in the air duct housing, the wind volume detection sensor is used for detecting the wind volume in the air duct housing, and the filter screen is cleaned according to the detection value of the wind volume detection sensor.

[0025] According to the eighth technical solution, the filter screen can be cleaned in time according to the detection value of the wind volume detection sensor, so that the drying efficiency of the laundry treatment device can be reliably avoided from being reduced.

[0026] The ninth technical solution is based on the control method of the filter screen cleaning of the laundry treatment device in the eighth technical solution, and a preset value is set for the wind volume detection sensor, and the filter screen is cleaned when the detection value of the wind volume detection sensor is less than or equal to the preset value.

[0027] According to the ninth technical solution, the degree of blockage of the filter screen can be easily judged according to the preset value of the wind volume detection sensor, and the filter screen can be cleaned in time, so that the drying efficiency of the laundry treatment device can be reliably avoided from being reduced.

[0028] The tenth technical solution is based on the control method of the filter screen cleaning of the laundry treatment device in any one of the first to seventh technical solutions, and a cleaning interval time is set, and the filter screen is cleaned when the cumulative working time of the drying device reaches the cleaning interval time.

[0029] According to the tenth technical solution, the cleaning time of the filter screen can be controlled by a simple means, and the drying efficiency of the laundry treatment device can be reliably avoided from being reduced.

[0030] The eleventh technical solution is based on the control method of the filter screen cleaning of the laundry treatment device in any one of the first to seventh technical solutions, and in the drum control step, the direction of the drum rotation is consistent with the direction from the highest part of the outer groove to the filter screen.

[0031] According to the eleventh technical solution, the direction of the drum rotation can be consistent with the flow direction of the cleaning water after the filter screen is cleaned, the cleaning water falling to the outer surface of the outer peripheral wall of the drum can be further reliably caused to flow to the bottom of the outer groove along the rotation direction of the drum, and the cleaning water can be further reliably avoided from flowing into the drum through the fine holes of the outer peripheral wall of the drum to wet the clothes being dried.

[0032] Effects of the application

[0033] According to the present application, it is possible to provide a control method of filter cleaning of a laundry treating apparatus capable of cleaning a filter during a drying process. BRIEF DESCRIPTION OF DRAWINGS

[0034] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the application and serve to explain the principles of the present application.

[0035] Figure 1 is a perspective view of a laundry treating apparatus of the present application.

[0036] Figure 2 is a plan view of a laundry treating apparatus of the present application.

[0037] Figure 3 is a sectional view of a laundry treating apparatus of the present application taken along line Figure 2 A-A thereof.

[0038] Figure 4 is a perspective view of a drying apparatus provided in a laundry treating apparatus of the present application.

[0039] Figure 5 is a plan view of a filter provided in a drying apparatus of a laundry treating apparatus of the present application.

[0040] Figure 6 is a flowchart of a control method of filter cleaning of a laundry treating apparatus of the present application.

[0041] BRIEF DESCRIPTION OF DRAWINGS

[0042] 1: laundry treating apparatus; 20: outer tub; 20U: uppermost portion; 21: laundry introduction port; 30: drum; 40: drying apparatus; 50: air path case; 51: air inlet member; 52: air outlet member; 53: case main body; 54: bellows; 55: air inlet; 56: air outlet; 57: filter; 60: cleaning apparatus; 61: header; 62: connection pipe; 63: injection pipe; 80: blower; X: rotational axis; S1: drying apparatus control step; S2: drum control step; S3: filter cleaning step. DETAILED DESCRIPTION

[0043] Next, a specific embodiment of the present application will be described with reference to the accompanying drawings.

[0044] First, a laundry treating apparatus to which the present application is applied will be described based on Figures 1 to 5

[0045] ​As the garment handling apparatus of the present invention, a washer-dryer combo that combines washing and drying functions will be used as an example for description below. Those skilled in the art will understand that the garment handling apparatus of the present invention can also be a dryer that only has a drying function.

[0046] like Figures 1 to 3 As shown, the garment handling device 1 includes: a housing (not shown); an outer trough 20 supported within the housing; a drum 30 rotatably mounted within the outer trough 20 for holding garments; and a drying device 40 for drying the garments within the drum 30 using heated air. Additionally, for ease of explanation, as... Figure 1 The front-back, left-right, and up-down directions are defined as shown, and these directions will be used in subsequent attached figures.

[0047] The outer groove 20 is a bottomed cylindrical shape with a clothing inlet 21 at one end. The outer groove 20 is installed inside the outer casing with the clothing inlet 21 facing forward, and is elastically supported by the outer casing using shock absorbers, suspension springs, etc., thereby preventing vibrations of the outer groove 20 from being transmitted to the outer casing. Furthermore, although not shown, a door for opening and closing the clothing inlet 21 is installed on the outer casing.

[0048] Additionally, the drum 30 is a bottomed cylindrical shape with one open end, used for storing clothes. The drum 30 is installed inside the outer tub 20 with its opening facing the clothes inlet 21 of the outer tub 20. Numerous fine holes are formed on the outer peripheral wall and bottom wall of the drum 30, allowing washing water and heated air generated by the drying unit 40 to flow between the outer tub 20 and the drum 30. Furthermore, the drum 30 is driven by a motor (not shown) and can rotate about a horizontally extending axis of rotation X. The drum 30 can rotate along... Figure 3 Rotating clockwise within it can also be along Figure 3 The roller 30 can rotate counterclockwise and can also switch between clockwise and counterclockwise directions. In addition, the rotation axis X of the roller 30 can be slightly tilted upwards towards the clothing inlet 21.

[0049] In addition, such as Figures 1 to 3 As shown, an integrally constructed drying device 40 is disposed above the outer tub 20. This drying device 40 is positioned in the space between the top wall plate of the outer casing (not shown) and the arc-shaped outer peripheral surface of the upper side of the outer tub 20 in the vertical direction; that is, it is disposed within the upper space above the outer tub 20 within the outer casing. This drying device 40 is used to dry clothes inside the drum 30 using heated air.

[0050] like Figures 1 to 4As shown, the drying device 40 includes: an air duct housing 50 having an air inlet 55 and an air outlet 56, the air inlet 55 and the air outlet 56 being connected to the inner cavity of the drum 30 respectively; and a fan 80 for causing air to flow, thereby introducing air from the drum 30 into the air duct housing 50 through the air inlet 55, and introducing heated air into the drum 30.

[0051] Additionally, although not shown, the drying apparatus 40 also includes a heater for heating the air in the air duct housing 50. This heater may be, for example, a PTC heater, an electric heating tube heater, or the like, which heats the air in the air duct housing 50 when energized.

[0052] Furthermore, the drying device 40 may also include an evaporator and a condenser instead of the aforementioned heater. In this case, the drying device 40 includes: an evaporator disposed within the air duct housing 50 for dehumidifying the air in the air duct housing 50; a condenser disposed within the air duct housing 50 downstream of the evaporator in the airflow direction for heating the air in the air duct housing 50; and a compressor for compressing the refrigerant and supplying the compressed refrigerant to the condenser and evaporator. More specifically, the evaporator cools the humid air flowing through it by absorbing heat from the refrigerant flowing inside, causing water vapor in the air to condense on the surface of the evaporator as condensate, thereby obtaining dry air. The condenser heats the dry air flowing through it by releasing heat from the refrigerant flowing inside, thereby obtaining high-temperature and dry air. When the compressor is working, it compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant. Then, the refrigerant is sent into the condenser, where it releases heat and becomes a low-temperature, high-pressure refrigerant. After that, the refrigerant passes through a throttling device and becomes a low-temperature, low-pressure gas-liquid two-phase refrigerant. Then, the refrigerant enters the evaporator and absorbs heat to become a low-temperature, low-pressure gaseous refrigerant. Finally, the refrigerant returns to the compressor and is compressed again.

[0053] The air duct housing 50 includes: an air inlet 51 that extends generally vertically and has an air inlet 55 at its lower end, such as... Figure 1 and Figure 3 As shown, the lower end of the air inlet 51 is connected to the outer groove 20 at the rear end of the outer peripheral surface of the outer groove 20, and communicates with the inner cavity of the roller 30 through the fine holes in the outer peripheral wall and bottom wall of the roller 30; the air outlet 52 extends generally in the vertical direction and has an air outlet 56 at its lower end, as shown in the figure. Figure 1 and Figure 2As shown, the lower end of the air outlet 52 is connected to the outer groove 20 at the front end of the outer peripheral surface of the outer groove 20 (i.e., the side of the clothing inlet 21), and communicates with the inner cavity of the roller 30 through the opening of the roller 30 corresponding to the clothing inlet 21; and the housing body 53 is connected between the air inlet 51 and the air outlet 52, and the aforementioned heater (or evaporator, condenser) and fan 80 are all disposed within the housing body 53. In addition, a retractable corrugated tube 54 is also sandwiched between the air inlet 51 and the housing body 53 to prevent vibration of the outer groove 20 from being transmitted to the housing body 53 through the air inlet 51. Although not shown, a retractable corrugated tube may also be sandwiched between the air outlet 52 and the housing body 53, for example. In addition, in this embodiment, by connecting the air outlet 52 to the front end of the outer peripheral surface of the outer groove 20, compared with the case where the air outlet 52 is connected to the rear end of the outer peripheral surface of the outer groove 20, the air heated by the drying device 40 can be directly supplied to the drum 30, and the air will not be dispersed due to the fine holes of the drum 30, so the clothes in the drum 30 can be dried more efficiently.

[0054] The fan 80 is disposed within the housing body 53 of the air duct housing 50 at the location where it connects with the air inlet 51 and the bellows 54. In the direction of air flow within the air duct housing 50, the fan 80 is located upstream of the heater (or evaporator, condenser).

[0055] In addition, such as Figure 3 As shown, the fan 80 is configured such that its rotating shaft extends vertically. By operating the fan, low-temperature air inside the drum 30 is drawn from the rear side of the drum 30 through the air inlet 51 and the bellows 54 into the housing body 53. The low-temperature air drawn into the housing body 53 is heated by passing through a heater (or evaporator, condenser), thereby obtaining high-temperature air. This high-temperature air enters the drum 30 from the front side through the air outlet 52. The high-temperature air comes into contact with the damp clothes inside the drum 30, evaporating the moisture contained in the clothes into water vapor and carrying it away, thus becoming low-temperature air. The low-temperature air is drawn back into the housing body 53 from the rear side of the drum 30 through the air inlet 51 and the bellows 54.

[0056] In addition, such as Figure 3 , Figure 5As shown, a filter screen 57 is provided inside the air duct housing 50. This filter screen 57 is used to filter lint from the air flowing inside the air duct housing 50. Specifically, the filter screen 57 is a flat filter screen, horizontally positioned near the bellows 54 of the air inlet 51 of the air duct housing 50. Of course, the filter screen 57 does not necessarily have to be horizontally positioned; it can also be inclined relative to the horizontal direction. When the fan 80 operates and draws air from the drum 30 into the housing body 53 through the air inlet 51, lint generated by the clothes in the drum 30 flows into the air inlet 51 from the air inlet 56 with the air flow and is collected by the filter screen 57. This prevents lint from entering the housing body 53, thereby preventing lint from getting tangled in the impeller of the fan 80 and affecting the normal operation of the fan 80. At the same time, it also prevents lint from adhering to the heater (or evaporator, condenser) and affecting the drying efficiency of the drying device 40.

[0057] like Figures 3 to 5 As shown, the garment handling device 1 also includes a washing device 60, which washes the filter screen 57 by spraying washing water towards it. The washing device 60 includes a manifold 61, a connecting pipe 62, and a spray pipe 63. The connecting pipe 62 shares the manifold 61 with the pipe used to supply washing water to the drum 30 for washing the garments. A control valve (not shown) is provided in the manifold 61, which controls the on / off flow of washing water supplied to the connecting pipe 62 and the spray pipe 63, and may also control the flow rate of the washing water supplied to the connecting pipe 62 and the spray pipe 63. Figure 3 , Figure 5 As shown, the spray pipe 63 is located inside the housing body 53 below the fan 80. Multiple spray holes are formed on the spray pipe 63 at positions corresponding to the filter screen 57, allowing cleaning water to be sprayed from above towards the filter screen 57, washing away the lint mainly adhering to the lower surface of the filter screen 57. One end of the spray pipe 63 extends from the housing body 53 and is connected to the manifold 61 via a connecting pipe 62.

[0058] Additionally, although not shown in the diagram, the drying device 40 also includes an airflow detection sensor located within the air duct housing 50. This airflow detection sensor detects the airflow within the air duct housing 50, and based on the sensor's reading, the cleaning device 60 is activated to clean the filter 57. Specifically, a preset value C is set for the airflow detection sensor. When the sensor's reading is less than or equal to the preset value C, the cleaning device 60 is activated to clean the filter 57. However, this is not a limitation; an airflow detection sensor may not be included. In this case, for example, a cleaning interval can be set, and the cleaning device 60 is activated to clean the filter 57 when the cumulative operating time of the drying device 40 reaches the cleaning interval. Alternatively, a cleaning interval can be set simultaneously with the airflow detection sensor, activating the cleaning device 60 to clean the filter 57 whenever either the sensor's reading is less than or equal to the preset value C or the cumulative operating time of the drying device 40 reaches the cleaning interval.

[0059] The garment handling apparatus 1 of this embodiment operates as follows: Garments are placed into the drum 30 through the garment inlet 21 and washed like a conventional washing machine. When drying the washed garments is required, the fan 80 and the heater operate simultaneously, using the heater to generate high-temperature air to dry the garments in the drum 30. Alternatively, if an evaporator and condenser are provided instead of a heater, the fan 80 and the compressor operate simultaneously, using the evaporator and condenser to generate high-temperature air to dry the garments in the drum 30. When the airflow detection sensor detects a value less than or equal to a preset value C, or when the cumulative operating time of the drying apparatus 40 reaches the cleaning interval, the cleaning apparatus 60 is activated to clean the filter 57.

[0060] Next, combined Figure 6 The control method for cleaning the filter screen of the clothing treatment device in this embodiment will be specifically described.

[0061] The control method for cleaning the filter screen of the garment processing device in this embodiment includes: a drying device control step S1, in which the drying device 40 is stopped or the speed of the fan 80 is reduced; a drum control step S2, in which the drum 30 is continuously rotated in one direction; and a filter screen cleaning step S3, in which the filter screen 57 is cleaned using a cleaning device 60.

[0062] Specifically, during the operation of the drying device 40, an airflow detection sensor is used to detect the airflow within the air duct housing 50. When the detected value of the airflow detection sensor is greater than a preset value C (or when the cumulative operating time of the drying device 40 has not reached the cleaning interval), the drying program continues to run. When the detected value of the airflow detection sensor is less than or equal to the preset value C (or when the cumulative operating time of the drying device 40 has reached the cleaning interval), the drying device control step S1 is executed.

[0063] In the drying device control step S1, if the drying device 40 is equipped with a heater, the drying device 40 is stopped by stopping the fan 80 and the heater; if the drying device 40 is equipped with an evaporator, a condenser and a compressor, the drying device 40 is stopped by stopping the fan 80 and the compressor.

[0064] Alternatively, the drying unit 40 can remain running, but the speed of the fan 80 can be reduced. In this case, if the drying unit 40 is equipped with a heater, the heater can be kept running or stopped; if the drying unit 40 is equipped with an evaporator, a condenser, and a compressor, the compressor can be kept running or stopped.

[0065] Next, the roller control step S2 is executed. In this roller control step S2, the roller 30 is continuously rotated in one direction, which is... Figure 3 In a clockwise direction. At this time, as Figure 3 As shown, the filter screen 57 is located on the right side relative to the highest part 20U of the outer groove 20, and the direction of rotation of the roller 30 is the same as the direction from the highest part 20U of the outer groove 20 toward the filter screen 57.

[0066] Alternatively, the filter screen 57 can be positioned on the left side relative to the highest part 20U of the outer groove 20. In this case, during the roller control step S2, the roller 30 is continuously rotated in a counterclockwise direction, thereby making the direction of rotation of the roller 30 consistent with the direction from the highest part 20U of the outer groove 20 toward the filter screen 57.

[0067] Furthermore, in the drum control step S2, the rotational speed of the drum 30 is controlled so that the tangential velocity v1 of the outermost circumference of the drum 30 is close to the falling velocity v2 of the cleaning water after cleaning the filter screen 57 in the subsequent filter cleaning step S3. Here, "close to" includes not only the case where the tangential velocity v1 of the outermost circumference of the drum 30 is equal to the falling velocity v2 of the cleaning water after cleaning the filter screen 57 in the filter cleaning step S3, but also the case where v1 and v2 are approximately equal. For example, the case satisfying the following formula ① is included within the range of "close to".

[0068] Equation ①: 0.8 ≤ v1 / v2 ≤ 1.2

[0069] As a specific example, in the roller control step S2, the rotational speed of roller 30 can be from 30 r / min to 300 r / min. With a diameter of 525 mm, the tangential velocity of the outermost circumference of roller 30 is as follows.

[0070] v1=(30r / min~300r / min)×525mm

[0071] = (0.5r / s~5r / s)×0.525m

[0072] = 0.2625m / s~2.625m / s

[0073] This describes the case where the start time of the drum control step S2 is later than the start time of the drying device control step S1, but it is not limited to this. For example, the start time of the drum control step S2 may also be earlier than the start time of the drying device control step S1, or the start time of the drum control step S2 may be the same as the start time of the drying device control step S1.

[0074] Next, the filter screen cleaning step S3 is performed. In the filter screen cleaning step S3, the control valve at the manifold 61 is opened, and cleaning water is supplied to the spray pipe 63 through the connecting pipe 62. The filter screen 57 is cleaned by the cleaning water sprayed from the spray pipe 63. At this time, the water flow rate of the cleaning device 60 is 4 mL / min to 12 mL / min.

[0075] The start time of the filter cleaning step S3 is no earlier than the start time of the drying device control step S1 and / or the start time of the drum control step S2. Preferably, the start time of the filter cleaning step S3 is later than the start time of the drying device control step S1 and the start time of the drum control step S2.

[0076] In the filter cleaning step S3, the cleaning water after cleaning the filter 57 falls towards the outer surface of the outer peripheral wall of the drum 30. By controlling the rotational speed of the drum 30 as described above, the tangential velocity v1 of the outermost periphery of the drum 30 is made close to the falling velocity v2 of the cleaning water after cleaning the filter 57. More specifically, 0.8 ≤ v1 / v2 ≤ 1.2. This ensures that the cleaning water falling onto the outer surface of the outer peripheral wall of the drum 30 flows down towards the bottom of the outer groove 20 in the direction of rotation of the drum 30, thereby preventing the cleaning water from flowing into the drum 30 through the fine holes in the outer peripheral wall of the drum 30 and wetting the clothes being dried.

[0077] Furthermore, the falling speed v2 of the washing water after cleaning the filter 57 varies depending on the water flow rate (or water pressure). Therefore, the correspondence between the falling speed v2 of the washing water and the water flow rate (or water pressure) can be pre-stored in the storage unit of the controller of the garment handling device 1. At the same time, a sensor for detecting the water flow rate (or water pressure) is installed in the washing device 60. When cleaning the filter 57, the falling speed v2 of the washing water is predicted based on the sensor's detection value, and the rotation speed of the drum 30 is controlled to satisfy 0.8≤v1 / v2≤1.2.

[0078] After the filter cleaning step S3 has been performed for a predetermined time (e.g., 0.5 min to 5 min), the control valve at the manifold 61 is closed, and the filter cleaning step S3 is ended.

[0079] Afterwards, the drying device control step S1 and the drum control step S2 are terminated, and the drying program is restarted. Furthermore, the order in which the drying device control step S1 and the drum control step S2 end is not particularly limited. Preferably, the filter cleaning step S3 ends no later than the end time of the drying device control step S1 and / or the end time of the drum control step S2. More preferably, the filter cleaning step S3 ends earlier than the end time of the drying device control step S1 and the end time of the drum control step S2.

[0080] The present invention has been described above through embodiments. However, the present invention is not limited to the embodiments described above. Various modifications that can be conceived by those skilled in the art to the embodiments are also included in the present invention without departing from the spirit of the invention, that is, the meaning expressed by the statements in the claims.

Claims

1. A method for controlling the cleaning of a filter screen in a garment processing device, characterized in that, The garment processing device includes: shell; An outer groove, which is supported within the outer casing; A roller, rotatably mounted within the outer groove, is used to store clothing; and A drying device used to dry clothes inside the drum using heated air. The drying device includes: A ventilation housing having an air inlet and an air outlet, the air inlet and the air outlet respectively communicating with the inner cavity of the roller; and A fan is used to circulate air, thereby guiding air from inside the drum into the air duct housing through the air inlet, and introducing heated air into the drum. The air duct housing is equipped with a filter screen, which is used to filter lint and debris from the air flowing within the air duct housing. The garment processing device further includes a cleaning device that cleans the filter by spraying cleaning water toward it. The control method for cleaning the filter screen of the garment processing device includes: The drying device control steps include stopping the drying device or reducing the speed of the fan. A roller control step, wherein the roller is continuously rotated in one direction; and The filter screen cleaning step involves using the cleaning device to clean the filter screen. In the roller control step, the direction of roller rotation is consistent with the direction from the highest part of the outer trough toward the filter screen.

2. The control method for cleaning the filter screen of the clothing treatment device according to claim 1, characterized in that, The start time of the filter cleaning step is no earlier than the start time of the drying device control step and / or the start time of the drum control step.

3. The control method for cleaning the filter screen of the clothing treatment device according to claim 1, characterized in that, The end time of the filter cleaning step shall not be later than the end time of the drying device control step and / or the end time of the drum control step.

4. The control method for cleaning the filter screen of the clothing treatment device according to claim 1, characterized in that, The drying device further includes a heater for heating the air in the air duct housing. In the drying device control steps, if the fan speed is reduced, the heater is kept running, or the heater is stopped.

5. The control method for cleaning the filter screen of the garment processing device according to claim 1, characterized in that, The drying device further includes: An evaporator is used to dehumidify the air in the air duct housing; A condenser for heating the air in the air duct housing; and A compressor is used to compress a refrigerant and supply the compressed refrigerant to the condenser and the evaporator. In the drying device control steps, while reducing the fan speed, the compressor is kept running or the compressor is stopped.

6. The control method for cleaning the filter screen of the clothing treatment device according to claim 1, characterized in that, In the roller control step, the rotational speed of the roller is controlled so that the tangential velocity of the outermost circumference of the roller is close to the falling velocity of the cleaning water after cleaning the filter screen in the filter screen cleaning step.

7. The control method for cleaning the filter screen of the garment processing device according to claim 6, characterized in that, In the roller control step, the rotational speed of the roller is 30 r / min to 300 r / min, and in the filter cleaning step, the water flow rate of the cleaning device is 4 mL / min to 12 mL / min.

8. The control method for cleaning the filter screen of the garment treatment apparatus according to any one of claims 1 to 7, characterized in that, The drying device also includes an airflow detection sensor disposed within the airflow housing, the airflow detection sensor being used to detect the airflow within the airflow housing. The filter is cleaned based on the detection value of the air volume sensor.

9. The control method for cleaning the filter screen of the garment processing device according to claim 8, characterized in that, A preset value is set for the airflow detection sensor. When the detected value of the airflow sensor is less than or equal to the preset value, the filter screen is cleaned.

10. The method for controlling the cleaning of the filter screen of the garment treatment apparatus according to any one of claims 1 to 7, characterized in that, A cleaning interval is set, and the filter is cleaned when the cumulative working time of the drying device reaches the cleaning interval.

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