Drum-type clothing processing device and control method

Abstract

The present invention relates to a drum-type clothing processing device and a control method, belonging to the technical field of clothing processing devices. The clothing processing device includes a weight detection device, a light emitting component of the weight detection device is arranged on the door body, and the light emitting component includes at least one light emitting unit; in the weight detection state, the direct light emitted by the light emitting unit is directed toward the bottom of the inner drum; the light sensing component of the weight detection device is arranged at the bottom of the inner drum, and the light sensing component includes at least one light sensing unit; multiple detection sites are set at the bottom of the inner drum, and in the weight detection state, the light sensing component is used to sense the light signals of the direct light incident on different detection sites; the controller is configured to determine the height range of the load in the inner drum based on the light signal sensed by the light sensing component, and determine the load weight based on the determined height range. The load weight detection result of the present invention is accurate, and a better clothing processing effect can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of clothing processing equipment, and in particular to a drum-type clothing processing equipment and a control method thereof. Background Art

[0002] In the related art, the main method for weighing a load in a laundry processing device, such as a washing machine, is to measure parameters such as the voltage, current, torque, electric energy, and the angle of rotation of the motor under different load conditions when the motor reaches a fixed speed, thereby estimating the weight of the load. The following is an example of obtaining the load weight by measuring the motor torque. The specific weighing process is as follows: first, the motor is controlled to reach a first predetermined speed and rotates at a constant speed at the first predetermined speed, and the motor torque at this time is measured; then, the motor is controlled to accelerate from the first predetermined speed to a second predetermined speed, and the rising torque of the motor during this process is measured; then, the motor is controlled to rotate at a constant speed at the second predetermined speed, and the motor torque at this time is measured; finally, based on the above detection results, the corresponding load torque is calculated by subtracting the average value of the speed of the motor rotating at the first predetermined speed and the second predetermined speed from the rising torque of the motor from the first predetermined speed to the second predetermined speed. After a correction step, the obtained load torque is compared with the corresponding relationship curve between load torque and load weight stored in the controller of the laundry processing device to determine the most approximate data, that is, the load weight.

[0003] However, the accuracy of the weighing method for determining the load weight by detecting parameters such as the voltage, current, torque, or angle of rotation of the motor under no load conditions is not high. Summary of the Invention

[0004] In order to overcome the problems existing in the related art, the present invention proposes a drum-type clothes processing device and a control method.

[0005] A first aspect of the present invention provides a drum-type laundry processing device, comprising an inner drum and a door for opening and closing the inner drum, wherein the inner drum comprises an inner drum bottom; the laundry processing device further comprises a weight detection device, wherein the weight detection device comprises:

[0006] A light emitting assembly is provided on the door body, and the light emitting assembly includes at least one light emitting unit; in a weight detection state, the direct light emitted by the light emitting unit is directed toward the bottom of the inner cylinder;

[0007] A light sensing component is provided at the bottom of the inner cylinder, and the light sensing component includes at least one light sensing unit; a plurality of detection sites are provided at the bottom of the inner cylinder, and in a weight detection state, the light sensing component is used to sense light signals of direct light incident on different detection sites;

[0008] A controller is configured to determine a height range of the load in the inner cylinder according to the light signal sensed by the light sensing component, and determine the weight of the load according to the determined height range.

[0009] Further optionally, there are multiple light emitting units, and the multiple light emitting units are arranged at intervals in the height direction of the door body. The multiple detection sites correspond one-to-one to the multiple light emitting units. In the weight detection state, the direct light emitted by the light emitting unit is directed to the corresponding detection site.

[0010] Further optionally, the door body includes a glass bowl, a plurality of through holes are provided on the glass bowl, the plurality of through holes correspond to a plurality of the light emitting units, and the direct light emitted by the light emitting units is emitted toward the corresponding detection positions through the corresponding through holes.

[0011] Further optionally, a guide rail is provided at the bottom of the inner cylinder, and a plurality of the detection sites are provided on the guide rail;

[0012] The light sensing assembly is arranged on the guide rail, and the light sensing assembly includes at least one light sensing unit. The light sensing unit can be controlled to move between the plurality of detection sites along the guide rail.

[0013] Further optionally, the light sensing assembly includes a light sensing unit, the guide rail includes a continuous arc-shaped guide rail, and the plurality of detection sites are arranged on the arc-shaped guide rail;

[0014] When there are multiple light emitting units, the distribution tracks of the multiple light emitting units along the height direction of the door body are consistent with the arc-shaped guide rail.

[0015] Further optionally, the light sensing component includes a plurality of light sensing units, and the plurality of light sensing units are respectively arranged on a plurality of the detection sites.

[0016] Further optionally, the clothes processing device further includes a power supply device, and the power supply device is used to supply power to the light sensing component.

[0017] Further optionally, the clothes processing device includes an outer drum, the inner drum is rotatably arranged in the outer drum, and the outer drum includes an outer drum bottom;

[0018] The power supply device includes a first sensing portion and a second sensing portion; the first sensing portion is disposed at the bottom of the inner tube and is electrically connected to the light sensing component; the second sensing portion is disposed at the bottom of the outer tube and corresponds to the first sensing portion and is connected to a power source;

[0019] The second induction unit supplies power to the first induction unit through electromagnetic induction.

[0020] A second aspect of the present invention provides a control method for a drum-type laundry processing device, the control method applying the laundry processing device provided in the first aspect of the present invention, the control method comprising:

[0021] controlling the light emitting unit to emit direct light;

[0022] determining whether the light sensing unit senses a light signal of direct light;

[0023] When the light sensing unit senses the light signal, determining the height of a first detection position where the light signal is sensed;

[0024] determining a height range of the load in the inner cylinder according to the height of the first detection position;

[0025] The load weight is determined based on the determined height range.

[0026] Further optionally, when there are multiple light emitting units, the multiple light emitting units are controlled to emit direct light in sequence from bottom to top.

[0027] A third aspect of the present invention provides a control method for a drum-type laundry processing device. The control method applies the laundry processing device provided in the first aspect of the present invention. The operating program of the laundry processing device includes a washing program. In the washing program, the control method includes:

[0028] controlling the inner drum to rotate at a second speed;

[0029] Controlling multiple light emitting units to emit direct light simultaneously;

[0030] determining whether the light sensing unit senses a light signal;

[0031] When the light sensing unit senses the light signal, determining the number and positions of first detection sites that simultaneously sense the light signal;

[0032] Washing parameters are adjusted based on the determined number and positions of the first detection sites.

[0033] Further optionally, the adjusting washing parameters according to the determined number and position of the first detection sites comprises:

[0034] When the number of the first detection sites is less than or equal to a first set value, maintaining the current rotation speed of the inner drum;

[0035] When the number of the first detection sites is greater than a first set value and less than a second set value, determining positions of the plurality of first detection sites, and adjusting the rotation speed of the inner drum according to the positions of the plurality of first detection sites;

[0036] When the number of the first detection sites is greater than or equal to a second set value, the rotation speed of the inner drum is reduced.

[0037] Further optionally, the bottom of the inner drum includes an upper portion and a lower portion, and the plurality of detection sites are distributed in the upper portion and the lower portion, and adjusting the rotation speed of the inner drum according to positions of the plurality of first detection sites includes:

[0038] When a plurality of the first detection sites are located at the upper portion and the lower portion, reducing the rotation speed of the inner drum;

[0039] When the plurality of first detection sites are all located at the upper portion, increasing the rotation speed of the inner drum;

[0040] When the plurality of first detection sites are all located at the lower portion, the rotation speed of the inner drum is reduced.

[0041] The technical solution of the present invention can include the following beneficial effects: the present invention sets a light emitting unit on the door body to emit direct light, and sets a light sensing unit at the bottom of the inner drum to sense the light signal of the direct light, and determines the height range of the load in the inner drum according to the sensed light signal, and determines the load weight according to the height range of the load. The load weight detection result of this embodiment is accurate, so that a better clothing processing effect can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0043] Figure 1 is a schematic diagram showing a clothes treating apparatus according to an exemplary embodiment.

[0044] Figure 2 FIG1 is a schematic diagram showing the assembly of a light emitting unit and a glass bowl according to an exemplary embodiment.

[0045] Figure 3 is a diagram showing a setting method of detection sites according to an exemplary embodiment.

[0046] Figure 4 is a diagram showing a setting method of detection sites according to an exemplary embodiment.

[0047] Figure 5 The figure is a schematic diagram showing a power supply device supplying power to a light sensing unit according to an exemplary embodiment.

[0048] Figure 6 FIG. 4 is a control flow chart of a clothes treating apparatus according to an exemplary embodiment.

[0049] Figure 7 FIG. 4 is a control flow chart of a clothes treating apparatus according to an exemplary embodiment.

[0050] Figure 8 FIG. 4 is a control flow chart of a clothes treating apparatus according to an exemplary embodiment.

[0051] Figures 9-12 is a schematic diagram showing a load-scattering state according to an exemplary embodiment.

[0052] Among them: 1-inner cylinder; 11-inner cylinder bottom; 12-detection site; 13-second guide rail; 2-door body; 21-glass bowl; 211-through hole; 212-sealing ring; 3-light emitting unit; 4-light sensing unit; 5-outer cylinder; 51-outer cylinder bottom; 61-first sensing part; 62-second sensing part; 7-motor shaft; 8-load. DETAILED DESCRIPTION

[0053] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, like numbers in different figures represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present invention, as detailed in the appended claims.

[0054] In the related art, the main method for weighing loads in clothing processing equipment, such as washing machines, is to estimate the weight of the load by detecting parameters such as the voltage, current, torque, electric energy, and the angle of rotation of the motor when the motor reaches a certain fixed speed under different load conditions. However, the accuracy of this weighing method is not high.

[0055] In order to solve the above technical problems, the present embodiment proposes a drum-type clothes processing device, which includes a weight detection device. The weight detection device includes a light emitting component, a light sensing component and a controller, wherein the light emitting component is arranged on the door body of the clothes processing device, and the light emitting component includes at least one light emitting unit. In the weight detection state, the direct light emitted by the light emitting unit is directed to the bottom of the inner drum. The light sensing component is arranged at the bottom of the inner drum, and the light sensing component includes at least one light sensing unit. A plurality of detection sites are set at the bottom of the inner drum. In the weight detection state, the light sensing component is used to sense the light signal of the direct light incident on different detection sites. The controller is configured to determine the height range of the load in the inner drum based on the light signal sensed by the light sensing component, and determine the load weight based on the determined height range.

[0056] In this embodiment, a light emitting unit is provided on the door body to emit direct light, and a light sensing unit is provided at the bottom of the inner drum to sense the light signal of the direct light, and the height range of the load in the inner drum is determined according to the sensed light signal, and the load weight is determined according to the height range of the load. The load weight detection result of this embodiment is accurate, thereby achieving a better clothing processing effect.

[0057] The technical solution of this embodiment is described in detail below with reference to the accompanying drawings. The following implementation methods and embodiments may be combined with each other unless there is any conflict.

[0058] According to an exemplary embodiment, Figure 1 As shown, this embodiment proposes a drum-type clothing processing device, and the clothing processing device of this embodiment can be a separate washing machine, a separate dryer, or a washing and drying device. The clothing processing device of this embodiment includes an inner drum 1 and a door body 2 for opening and closing the inner drum 1, and the inner drum 1 includes an inner drum bottom 11. The clothing processing device also includes a weight detection device, and the weight detection device includes a light emitting component and a light sensing component, wherein the light emitting component is arranged on the door body 2, and the light emitting component includes at least one light emitting unit 3. In the weight detection state, the direct light emitted by the light emitting unit 3 is directed toward the inner drum bottom 11, and the direct light is incident on the inner drum bottom 11 in a direction perpendicular to the inner drum bottom 11. This embodiment does not limit the type of the light emitting unit 3. Exemplarily, the light emitting unit 3 is an infrared light emitting diode.

[0059] The light sensing assembly is disposed at the bottom 11 of the inner cylinder. The light sensing assembly includes at least one light sensing unit 4. The inner cylinder bottom 11 is provided with a plurality of detection sites 12. In the weight detection state, the light sensing assembly is used to sense the light signal of the direct light incident on different detection sites 12. This embodiment does not limit the type of light sensing unit 4. For example, the light sensing unit 4 is a photoresistor. The photoresistor can convert the light signal into an electrical signal, and the resistance of the photoresistor can change with the change of the light signal intensity. If the direct light emitted by the light emitting unit 3 is not blocked by the load 8, the resistance of the photoresistor changes, and then is fed back as an electrical signal (such as current or voltage). If the direct light emitted by the light emitting unit 3 is blocked by the load 8, the photoresistor will not react.

[0060] This embodiment does not limit the number of light emitting units 3 , and the number of light emitting units 3 can be one or more.

[0061] In some embodiments (not shown in the figure of this embodiment), there is one light emitting unit 3, and a first guide rail is set along the vertical direction of the door body 2. The light emitting unit 3 is movably set on the first guide rail. In the weight detection state, the light emitting unit 3 can be controlled to move on the first guide rail, and the direct light emitted by the light emitting unit 3 is directed to different positions of the inner cylinder bottom 11. Exemplarily, the first guide rail is a continuous linear guide rail or a continuous arc guide rail.

[0062] In some embodiments, as Figure 1 As shown, there are multiple light emitting units 3, which are arranged at intervals in the height direction of the door body 2. Multiple detection sites 12 correspond to the multiple light emitting units 3 one by one. In the weight detection state, the direct light emitted by the light emitting unit 3 is directed to the corresponding detection site 12. Figure 1 and Figure 2 As shown, the door body 2 includes a glass bowl 21, which is provided with a plurality of through holes 211. The plurality of through holes 211 correspond to the plurality of light emitting units 3. The direct light emitted by the light emitting units 3 is emitted toward the corresponding detection position 12 through the corresponding through holes 211, and the light emitting units 3 extend into the through holes 211. When the laundry processing device has a laundry washing function, the light emitting units and the through holes 211 must be sealed to prevent water in the inner drum 1 from overflowing through the through holes 211. For example, the light emitting units and the through holes 211 are sealed by a sealing ring 212.

[0063] This embodiment does not limit the number of light sensing units 4 , and the number of light sensing units 4 can be one or more.

[0064] In some embodiments, as Figure 3As shown, there are multiple light sensing units 4, each corresponding to a plurality of detection sites 12, with one light sensing unit 4 disposed at each detection site 12. When direct light emitted by the light emitting unit 3 enters a detection site 12, the light sensing unit 4 at the detection site 12 senses the light signal of the direct light.

[0065] In some embodiments, there are one or more light sensing units 4, a second guide rail 13 is set on the bottom of the inner cylinder 11, the light sensing unit 4 is movably set on the second guide rail 13, and multiple detection sites 12 are located on the second guide rail 13. In the weight detection state, the light sensing unit 4 can be controlled to move along the second guide rail 13 between the multiple detection sites 12 to sense the light signals taken into the multiple detection sites 12.

[0066] The structure of the second guide rail 13 is not limited. The second guide rail 13 includes two sections of linear guide rails arranged along the height direction of the inner cylinder bottom 11. The two sections of linear guide rails are spaced apart to avoid the motor shaft 7 of the clothing processing device. A light sensing unit 4 is movably provided on each linear guide rail. A plurality of detection sites 12 are distributed on the two linear guide rails. The light sensing unit 4 can be controlled to move between the plurality of detection sites 12 on the corresponding linear guide rails. For another example, the second guide rail 13 includes two sections of linear guide rails and one section of arc-shaped guide rail arranged along the height direction of the inner cylinder bottom 11. A plurality of detection sites 12 are distributed on the two sections of linear guide rails. The arc-shaped guide rail connects the two sections of linear guide rails to avoid the motor shaft 7 of the clothing processing device. A light sensing unit 4 is provided on the second guide rail 13. The light sensing unit 4 can be controlled to move on the continuous guide rail formed by the two sections of linear guide rails and the arc-shaped guide rail. For another example, Figure 4 As shown, the second guide rail 13 includes a separate continuous arc guide rail, and multiple detection sites 12 are distributed on the arc guide rail. The light sensing component includes a light sensing unit 4, and the light sensing unit 4 can be controlled to move on the arc guide rail. When there are multiple light emitting units 3, the distribution trajectories of the multiple light emitting units 3 along the height direction of the door body 2 are consistent with the arc guide rail, so that the direct light emitted by the light emitting unit 3 can be emitted to the corresponding detection site 12 without obstruction.

[0067] The weight detection unit of this embodiment also includes a controller (not shown in the figure). The controller of this embodiment can be part of the control device of the clothing processing equipment where the weight detection device is located, or it can be a separate control device set up to detect the load weight. The controller is configured to determine the height range of the load 8 in the inner drum 1 based on the light signal sensed by the light sensing component, and determine the load weight based on the determined height range, so that the load weight can be accurately determined. When the light sensing unit moves to a certain detection point 12 and does not sense direct light, it can be determined that the height of the load 8 is higher than the height of the detection point 12; when the light sensing unit 4 senses the light signal of direct light at a certain detection point 12 and then feeds back an electrical signal, it can be determined that the height of the load 8 is lower than the height of the detection point. Therefore, by determining whether different detection points 12 detect light signals, the height range of the load 8 in the inner drum 1 can be determined, and then the load weight can be determined based on the load height range. For example, the load weight is determined based on a preset mapping relationship between load height range and load weight.

[0068] According to an exemplary embodiment of the present disclosure, the laundry processing device of this embodiment further includes a power supply device, which is used to supply power to the light sensing component. In one example, Figure 1 As shown, the clothing processing device includes an outer drum 5, and the inner drum 1 is rotatably arranged in the outer drum 5, and the outer drum 5 includes an outer drum bottom 51. The power supply device includes a first sensing part 61 and a second sensing part 62, and the first sensing part 61 is arranged at the inner drum bottom 11, and the first sensing part 61 is electrically connected to the light sensing component. The second sensing part 62 is arranged at the outer drum bottom 51, and the second sensing part 62 corresponds to the first sensing part 61. The second sensing part 62 is connected to a power source, and the second sensing part 62 supplies power to the first sensing part 61 by electromagnetic induction. In this embodiment, wireless power supply to the light sensing unit can be achieved through the first sensing part 61 and the second sensing part 62, avoiding the inconvenience caused by line layout. This embodiment does not limit the types of the first sensing part 61 and the second sensing part 62. In one example, as Figure 5 As shown, the light sensing assembly includes multiple light sensing units 4, the first sensing portion 61 includes multiple first sensing coils, the multiple first sensing coils correspond to the multiple light sensing units 4, the second sensing portion 62 includes multiple second sensing coils, the multiple second sensing coils correspond to the multiple first sensing coils, and the first sensing coils are electrically connected to the corresponding light sensing units. Figure 5 As shown in the power supply diagram, after the second induction coil is connected to the power supply, the second induction coil generates a magnetic flux change. Correspondingly, the magnetic flux change acts on the first induction coil, causing the first induction coil to generate an induced current, which can be transmitted to the light sensing unit 4 through the wire.

[0069] According to an exemplary embodiment, this embodiment provides a control method for a clothes treating apparatus. The control method of this embodiment is applied to the clothes treating apparatus as in the above-mentioned embodiment.

[0070] Figure 6 is a control flow chart of a clothes processing apparatus according to an exemplary embodiment, referring to Figure 6 The control method of this embodiment includes steps S61 to S62, wherein:

[0071] S61, controlling the light emitting unit to emit direct light;

[0072] S62, determining whether the light sensing unit senses a light signal of direct light;

[0073] S63, when the light sensing unit senses the light signal, determining the height of the first detection position where the light signal is sensed;

[0074] S64, determining a height range of the load in the inner cylinder according to the height of the first detection point;

[0075] S65: Determine the load weight according to the determined height range.

[0076] When the laundry processing device of this embodiment needs to detect the load weight, it controls the light-emitting unit to emit direct light. When only one light-emitting unit is provided, this light-emitting unit moves in the direction of the door height so that the direct light emitted by the light-emitting unit can be projected into different detection points on the bottom of the inner drum. When there are multiple light-emitting units, the multiple light-emitting units can emit direct light simultaneously or sequentially. In one example, the multiple light-emitting units are controlled to emit direct light sequentially from bottom to top. When a light-emitting unit emits direct light but the light-sensing unit does not sense a light signal, the light-emitting unit can be controlled to emit direct light while the next light-emitting unit is controlled to emit direct light. Alternatively, the light-emitting unit can be controlled to turn off before the next light-emitting unit is controlled to emit direct light. When the light-sensing component senses a light signal, the position of the first detection point where the light signal is sensed is determined. The first detection point is the detection point where the light signal is detected, and the height of the first detection point reflects the load height. If the light-sensing unit detects a light signal at the first detection point, it indicates that the load does not block the direct light and the load height is lower than the height of the first detection point. Each detection point corresponds to a load height range. After determining the position of the first detection point, the height range of the load in the inner cylinder can be determined, and the load weight can be determined based on the determined height range. For example, the load weight can be determined based on a pre-set mapping relationship between load height range and load weight.

[0077] The following Figures 1-4The control method of this embodiment is explained in detail using a clothing processing device as an example. A plurality of light emitting units 3 are provided on the door body 2 along the height direction of the door body. The plurality of light emitting units 3 are respectively a first light emitting unit, a second light emitting unit, a third light emitting unit, and a fourth light emitting unit. The detection sites 12 corresponding to the first light emitting unit, the second light emitting unit, the third light emitting unit, and the fourth light emitting unit are respectively G1, G2, G3, and G4. When detecting the load weight, the first light emitting unit is first turned on. If the light sensing unit 4 detects a light signal at the G1 detection site, it is determined that the load is within the first height range. Based on the mapping relationship between the load height range and the load weight, the load amount is determined to be the first load amount. The second to fourth light emitting units are no longer turned on. If no light signal is detected, it indicates that the direct light emitted by the first light emitting unit is blocked by the load and the light sensing unit cannot receive the direct light at the G1 detection site. In this case, the first light emitting unit is turned off and the second light emitting unit is turned on. When the second light emitting unit is turned on, if the light sensing unit detects a light signal at the G2 detection position, it is determined that the load is in the second height range, and the load amount is determined to be the second load amount based on the mapping relationship between the load height range and the load weight. The third and fourth light emitting units are no longer turned on. If no light signal is sensed, it indicates that the direct light emitted by the second light emitting unit is blocked by the load, and the light sensing unit cannot receive the direct light at the G2 detection position. In this case, the second light emitting unit is turned off and the third light emitting unit is turned on. The clothing detection process after the third light emitting unit is turned on is analogous and will not be described in detail here.

[0078] The following is a specific example of the mapping relationship between load height range and load weight. Figure 3 and Figure 4 For example, the height of the G1 detection point from the bottom of the inner drum is preferably 1 / 5 of the total height of the inner drum 1, corresponding to the first load; the height of the G2 detection point from the bottom of the inner drum is preferably 2 / 5 of the total height of the inner drum 1, corresponding to the second load; the height of the G3 detection point from the bottom of the inner drum is preferably 3 / 5 of the total height of the inner drum, corresponding to the third load; the height of the G4 detection point from the bottom of the inner drum is preferably 4 / 5 of the total height of the inner drum, corresponding to the fourth load. Taking a washing machine with a maximum washing load of 10kg as an example, the first load can be selected from 0-1kg; the second load can be selected from 1kg-2.5kg; the third load can be selected from 2.5kg-4.5kg; the fourth load can be selected from 4.5kg-6kg; and the fifth load can be selected from 6kg-10kg.

[0079] Figure 7 is a control flow chart of a clothes processing apparatus according to an exemplary embodiment, referring to Figure 7 In this embodiment, before controlling the plurality of light emitting units to emit direct light, the control method further includes steps S71 to S72, wherein:

[0080] S71, controlling the inner drum to rotate alternately forward and reverse at a first speed for a preset time period;

[0081] S72, controlling the inner cylinder to rotate to a preset position.

[0082] Before detecting the load weight, this embodiment requires the inner drum to rotate alternately forward and reverse at a first speed for a preset duration to shake the load loose within the inner drum and prevent localized load heights from being too high or too low, which could affect detection accuracy. After the shaking is complete, the detection points may no longer be arranged along the height of the inner drum bottom. Therefore, the inner drum must be rotated to a preset position. The preset position is the position of the inner drum when multiple detection points are arranged along the height of the inner drum bottom, so that the direct light emitted by the light-emitting unit can accurately capture the corresponding detection point. When the inner drum reaches the preset position, rotation of the inner drum stops and load weight detection begins. This embodiment does not limit the first speed and the preset duration. In one example, the first speed ranges from 35 rpm to 55 rpm, and the preset duration ranges from 10 seconds to 120 seconds, preferably from 30 seconds to 60 seconds.

[0083] After determining the load weight, the control method of this embodiment further includes determining operating parameters of the laundry processing device based on the determined load weight. In one example, determining the operating parameters of the laundry processing device based on the determined load weight includes determining the operating parameters of the laundry processing device based on a pre-set mapping relationship between load weight and operating parameters. A specific example of load weight-operating parameters is: when the load weight is at a first load, first set parameters are selected for main wash, where the first set parameters are: water level can be: 10L-12L, speed can be: 50rpm-55rpm, and temperature can be: 40°C; and so on. When the load weight is at a second load, second set parameters are selected for main wash; when the load weight is at a third load, third set parameters are selected for main wash; when the load weight is at a fourth load, fourth set parameters are selected for main wash; and when the load weight is at a fifth load, fifth set parameters are selected for main wash. This embodiment determines operating parameters based on different load weights, eliminating the need for manual user settings, resulting in better laundry processing and greater energy efficiency.

[0084] Figure 8 is a control flow chart of a clothes processing apparatus according to an exemplary embodiment, referring to Figure 8 The operation program of the clothes processing device includes a washing program. In the washing program, the control method of this embodiment includes steps S81 to S85, wherein:

[0085] S81, controlling the inner drum to rotate at a second speed;

[0086] S82, controlling the plurality of light emitting units to emit direct light simultaneously;

[0087] S83, determining whether the light sensing unit senses a light signal;

[0088] S84, when the light sensing unit senses the light signal, determining the number and positions of first detection sites that simultaneously sense the light signal;

[0089] S85, adjusting washing parameters according to the determined number and positions of the first detection sites.

[0090] When the clothing processing device of this embodiment has a washing function, the operating program of the clothing processing device includes a washing program. During the washing process, the inner drum is controlled to rotate at a second speed. The size of the second speed is not limited, and the second speed can be selected as 55rpm-60rpm. The load in the inner drum is in a scattered state, and the quality of the scattered state can directly affect the washing effect. Therefore, it is necessary to determine the scattered state of the load and adjust the washing parameters according to the scattered state. When there are multiple light emitting units, first control the multiple light emitting units to emit direct light at the same time, and then determine whether the light sensing unit senses the light signal. If the light sensing unit senses the light signal, then determine the number and position of the first detection site that senses the light signal. According to the number and position of the first detection site, the scattered state of the load can be determined. Finally, the washing parameters are adjusted according to the number and position of the first detection site.

[0091] In one example, when the number of first detection sites is less than or equal to a first set value, the current rotation speed of the inner drum is maintained; when the number of first detection sites is greater than the first set value and less than a second set value, the positions of the multiple first detection sites are determined, and the rotation speed of the inner drum is adjusted based on the positions of the multiple first detection sites; when the number of first detection sites is greater than or equal to the second set value, the rotation speed of the inner drum is reduced. The first set value, the second set value, and the third set value can be set based on the number of detection sites.

[0092] The bottom of the inner drum of the clothing processing device of this embodiment includes an upper part and a lower part, and multiple detection sites are distributed in the upper part and the lower part of the inner drum bottom. The rotation speed of the inner drum is adjusted according to the positions of the multiple first detection sites, including: when the multiple first detection sites are located in the upper part and the lower part, the rotation speed of the inner drum is reduced; when the multiple first detection sites are all located in the upper part, the rotation speed of the inner drum is increased; when the multiple first detection sites are all located in the lower part, the rotation speed of the inner drum is reduced.

[0093] The technical solution of this embodiment is described in detail below with reference to specific examples. Figures 9-12 , in the washing program, during the rotation of the inner drum, determine whether the light sensing unit detects light signals at all detection sites, refer to Figure 9In the scattering state shown, if no light signal is detected at all detection sites, it means that the load scattering state is good and the load completely blocks direct light. At this time, the inner drum is controlled to operate according to the original rotation state, and there is no need to adjust the operating parameters. If the light sensing unit senses a light signal, the number and position of the first detection sites that sense the light signal at the same time are determined. If there is only one first detection site that senses the light signal, it means that the load scattering state is relatively good and blocks more direct light, and there is no need to adjust the current speed; if light signals are sensed at two first detection sites, the positions of the two first detection sites are determined and the next step of judgment is continued, refer to Figure 10 If the two first detection points are on different sides (such as G1 and G3 detection points, or G2 and G4 detection points, or G1 and G4 detection points, or G2 and G3 detection points), it means that there is a large gap when the load is scattered, and the spreading state is relatively poor. It is necessary to appropriately reduce the speed of the inner drum and reduce the spreading height; refer to Figure 11 If the two first detection points are on the same side and in the upper part of the inner cylinder (such as the G3 and G4 detection points), it means that when the load is scattered, the upper gap is large, which may be caused by the low speed causing the load to fall at a low height. It is necessary to increase the speed of the inner cylinder appropriately to increase the scattering height; if the two first detection points are on the same side and in the lower part of the inner cylinder (such as the G1 and G2 detection points), it means that when the load is scattered, the lower gap is large, which may be caused by the high speed causing the load to fall at a relatively high height. It is necessary to reduce the speed of the inner cylinder appropriately to reduce the scattering height. Figure 12 If there are three or more first detection points where light signals are detected, it means that the load is in a wall-attached state, which makes the middle gap large. In this case, the speed of the inner drum should be reduced appropriately and the scattering height should be lowered.

[0094] This embodiment determines the scattering state of the load according to the number and position of the first detection sites that sense the light signal, and then adjusts the inner drum speed according to the scattering state, thereby achieving a better washing effect.

[0095] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow from the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0096] It should be understood that the present invention is not limited to the exact construction described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0097] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow from the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0098] It should be understood that the present invention is not limited to the exact construction described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A drum type clothes processing device, characterized in that: The laundry processing device includes an inner drum and a door for opening and closing the inner drum, wherein the inner drum includes an inner drum bottom; the laundry processing device also includes a weight detection device, wherein the weight detection device includes: a light emitting assembly disposed on the door body, comprising a plurality of light emitting units arranged at intervals in the height direction of the door body and controllable to simultaneously emit direct light; in a weight detection state, the direct light emitted by the plurality of light emitting units is directed toward the bottom of the inner cylinder; A light sensing assembly is provided at the bottom of the inner cylinder, the light sensing assembly comprising a plurality of light sensing units; a plurality of detection sites are provided at the bottom of the inner cylinder, and the plurality of detection sites correspond one-to-one to the plurality of light emitting units; in a weight detection state, direct light emitted by the light emitting units is directed toward the plurality of detection sites corresponding to the bottom of the inner cylinder; the light sensing assembly is used to sense light signals of the direct light incident on different detection sites; a controller configured to determine a height range of the load in the inner cylinder according to the light signal sensed by the light sensing assembly, and determine a weight of the load according to the determined height range; The controller is further configured to: when the inner drum rotates at a second speed in a washing program and the plurality of light emitting units simultaneously emit direct light, determine whether the light sensing unit senses a light signal; when it is determined that the light sensing unit senses a light signal, determine the number and positions of first detection sites that simultaneously sense the light signal; and further adjust washing parameters based on the determined number and positions of the first detection sites; The first detection site is a detection site where a light signal is detected. The light sensing unit detects a light signal at the first detection site, indicating that the load does not block direct light and the load height is lower than the height of the first detection site.

2. The clothes processing device according to claim 1, characterized in that: The controller is designed to determine the scattering state of the load based on the number and position of the first detection sites that sense the light signal, and then adjust the inner drum speed according to the scattering state to obtain a better washing effect.

3. The laundry processing device according to any one of claims 1-2, characterized in that: The door body includes a glass bowl, and a plurality of through holes are provided on the glass bowl. The plurality of through holes correspond to the plurality of light emitting units, and the direct light emitted by the light emitting units is emitted toward the corresponding detection positions through the corresponding through holes.

4. The clothes processing device according to any one of claims 1 to 2, characterized in that: A guide rail is provided at the bottom of the inner cylinder, and a plurality of detection sites are provided on the guide rail; The light sensing assembly is arranged on the guide rail, and the light sensing assembly includes at least one light sensing unit. The light sensing unit can be controlled to move between the plurality of detection sites along the guide rail.

5. The clothes processing device according to claim 4, characterized in that: The guide rail comprises a continuous arc-shaped guide rail, and the plurality of detection sites are arranged on the arc-shaped guide rail; and the distribution tracks of the plurality of light emitting units along the height direction of the door body are consistent with the arc-shaped guide rail.

6. The clothes processing device according to claim 1, characterized in that The clothes processing device further includes a power supply device, which is used to supply power to the light sensing component.

7. The clothes processing device according to claim 6, characterized in that: The laundry processing device includes an outer drum, the inner drum is rotatably arranged in the outer drum, and the outer drum includes an outer drum bottom; The power supply device includes a first sensing portion and a second sensing portion; the first sensing portion is disposed at the bottom of the inner tube and is electrically connected to the light sensing component; the second sensing portion is disposed at the bottom of the outer tube and corresponds to the first sensing portion and is connected to a power source; The second induction unit supplies power to the first induction unit through electromagnetic induction.

8. A method for controlling a drum-type laundry processing device, characterized in that: The control method is applied to the laundry processing device according to any one of claims 1 to 7, wherein the operating program of the laundry processing device includes a washing program, and in the washing program, the control method includes: controlling the inner drum to rotate at a second speed; Controlling multiple light emitting units to emit direct light simultaneously; determining whether the light sensing unit senses a light signal; When the light sensing unit senses the light signal, determining the number and positions of first detection sites that simultaneously sense the light signal; Washing parameters are adjusted based on the determined number and positions of the first detection sites.

9. The control method according to claim 8, characterized in that: The control method further includes: Controlling the plurality of light emitting units to emit direct light in sequence from bottom to top; determining whether the light sensing unit senses a light signal of direct light; When the light sensing unit senses the light signal, determining the height of a first detection position where the light signal is sensed; determining a height range of the load in the inner cylinder according to the height of the first detection position; The load weight is determined based on the determined height range.

10. The control method according to claim 8, characterized in that: The step of adjusting washing parameters according to the determined number and position of the first detection sites comprises: When the number of the first detection sites is less than or equal to a first set value, maintaining the current rotation speed of the inner drum; When the number of the first detection sites is greater than a first set value and less than a second set value, determining positions of the plurality of first detection sites, and adjusting the rotation speed of the inner drum according to the positions of the plurality of first detection sites; When the number of the first detection sites is greater than or equal to a second set value, the rotation speed of the inner drum is reduced.

11. The control method according to claim 10, characterized in that: The bottom of the inner drum includes an upper portion and a lower portion, and a plurality of first detection sites are distributed on the upper portion and the lower portion. Adjusting the rotation speed of the inner drum according to positions of the plurality of first detection sites includes: When a plurality of the first detection sites are located at the upper portion and the lower portion, reducing the rotation speed of the inner drum; When the plurality of first detection sites are all located at the upper portion, increasing the rotation speed of the inner drum; When the plurality of first detection sites are all located at the lower portion, the rotation speed of the inner drum is reduced.

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