A washing machine and its control method

Abstract

An embodiment of the present application provides a washing machine and a control method thereof, which relate to the technical field of washing machines and are used to correct the maximum rotation speed of the dehydration program according to the weight of the clothes during the execution of the dehydration program by the washing machine, and can avoid problems such as too long dehydration time and barrel collision of the washing machine. The washing machine includes: a cabinet; a drum assembly; a weight sensor for detecting the weight of the clothes in the drum assembly; a controller electrically connected to the weight sensor and configured to: obtain the weight of the clothes after the washing machine finishes executing the pre-dehydration program through the weight sensor; determine the maximum rotation speed of the dehydration program according to the weight of the clothes after the washing machine finishes executing the pre-dehydration program; during the execution of the dehydration program, obtain the weight of the clothes after the washing machine finishes the i-th stage of the dehydration program; adjust the maximum rotation speed of the dehydration program according to the weight of the clothes after the washing machine finishes the i-th stage of the dehydration program.

Description

Technical Field

[0001] The present application relates to the technical field of washing machines, and particularly to a washing machine and a control method thereof. Background Art

[0002] With the continuous development of the scientific and technological level and people's pursuit of a better life, washing machines have emerged, solving the laborious housework of washing clothes and liberating people's hands. Therefore, washing machines have gradually become electrical appliances owned by every household.

[0003] When the washing machine runs the dehydration program, the water content of the washed clothes is reduced as much as possible, enabling the user to dry the clothes more quickly. Currently, the washing machine determines the maximum value of the rotation speed of the dehydration program according to the weight of the clothes after the pre-dehydration program is executed; and executes the dehydration program according to the maximum value of the rotation speed. However, the maximum value of the rotation speed of the dehydration program determined in this way may not be reasonable enough, resulting in problems such as too long dehydration time and barrel collision during the execution of the dehydration program, which affect the user experience. Summary of the Invention

[0004] The present application provides a washing machine and a control method thereof, which are used to real-time correct the maximum value of the rotation speed of the dehydration program according to the weight of the clothes during the execution of the dehydration program by the washing machine, which can avoid problems such as too long dehydration time and barrel collision of the washing machine and obtain a better dehydration effect.

[0005] To achieve the above object, the present application adopts the following technical solutions:

[0006] In a first aspect, the present application provides a washing machine, including:

[0007] A cabinet;

[0008] A drum assembly;

[0009] A weight sensor for detecting the weight of the clothes in the drum assembly;

[0010] A controller, electrically connected to the weight sensor, configured to:

[0011] Obtain the weight of the clothes after the pre-dehydration program is executed by the washing machine through the weight sensor;

[0012] Determine the maximum value of the rotation speed of the dehydration program according to the weight of the clothes after the pre-dehydration program is executed by the washing machine;

[0013] During the execution of the dehydration program, obtain the weight of the clothes after the i-th stage of the dehydration program is executed by the washing machine;

[0014] Adjust the maximum value of the rotation speed of the dehydration program according to the weight of the clothes after the i-th stage of the dehydration program is executed by the washing machine.

[0015] The technical solution provided by the embodiment of the present application brings at least the following beneficial effects: compared with the method of determining the maximum value of the rotation speed only according to the weight of the clothes before dehydration in the related art, the embodiment of the present application will re-determine the weight of the clothes during the dehydration process, such as the i-th stage of the dehydration program, and based on the re-determined weight of the clothes, correct the maximum value of the rotation speed of the dehydration program. Since the maximum value of the corrected rotation speed is more in line with the current dehydration situation than the maximum value of the rotation speed determined before dehydration, the dehydration program can be continued based on the maximum value of the corrected rotation speed, which can avoid problems such as unbalanced rotation of the washing machine drum assembly and excessive dehydration time caused by changes in the weight of the clothes during the long dehydration, thereby obtaining a better dehydration effect.

[0016] In some embodiments, the controller of the washing machine is configured to obtain the weight of the clothes after the washing machine performs the i-th stage of the dehydration program, and specifically perform the following steps: obtain the weight of the clothes before the washing machine is filled with water, the weight of the clothes after the washing machine performs the i-1th stage of the dehydration program, and the rotation speed of the washing machine when the washing machine performs the i-1th stage of the dehydration program; determine the weight of the water in the clothes when the washing machine performs the i-1th stage of the dehydration program according to the weight of the clothes before the washing machine is filled with water and the weight of the clothes after the washing machine performs the i-1th stage of the dehydration program; determine the dehydration loss rate when the washing machine performs the i-th stage of the dehydration program according to the rotation speed when the washing machine performs the i-th stage of the dehydration program, the dehydration loss rate is used to indicate the percentage of the weight of the water thrown out of the clothes to the weight of the water in the clothes; determine the weight of the clothes after the washing machine performs the i-1th stage of the dehydration program according to the weight of the clothes after the washing machine performs the i-1th stage of the dehydration program, the weight of the water in the clothes when the washing machine performs the i-1th stage of the dehydration program, and the dehydration loss rate. The technical solution provided by the present application divides the dehydration process of the washing machine into multiple stages, and by obtaining the weight of the clothes and the rotation speed of the washing machine at each stage, the change in the weight of the clothes as the water is thrown out during the dehydration process is taken into account. In this way, the weight of the clothes during the dehydration process can be obtained more accurately and in real time, and the maximum value of the rotation speed of the dehydration program obtained according to the weight of the clothes during the dehydration process is also more accurate, thereby achieving a better dehydration effect of the clothes.

[0017] In some embodiments, the weight of the laundry after the washing machine performs the i-th stage of the dehydration process satisfies the following relationship: i =M i-1 -M s ×Y i Among them, M i M represents the weight of clothes after the washing machine finishes the i-th stage of the dehydration program. i-1 represents the weight of clothes after the washing machine finishes the i-1th stage of the dehydration program, M sDenote the weight of water in the laundry when the washing machine finishes the (i - 1)-th stage of the dehydration program, Y i Denote the dehydration loss rate when the washing machine finishes the i-th stage of the dehydration program. In this way, the weight of the laundry at a certain stage of the dehydration process can be obtained more accurately in real time, and a better dehydration effect can also be achieved for the maximum value of the dehydration program determined subsequently.

[0018] In some embodiments, the controller of the washing machine is configured to: determine the dehydration loss rate when the washing machine finishes the i-th stage of the dehydration program according to the rotation speed when the washing machine finishes the i-th stage of the dehydration program, and specifically perform the following steps: obtain the laundry material; determine the dehydration loss rate when the washing machine finishes the i-th stage of the dehydration program according to the rotation speed reached when the washing machine finishes the i-th stage of the dehydration program and the laundry material. In this way, taking the laundry material and the rotation speed into consideration simultaneously, the obtained dehydration loss rate is more accurate, and the subsequently calculated laundry weight is also more accurate.

[0019] In some embodiments, the controller of the washing machine is further configured to: obtain the weight and the laundry material of the laundry before the washing machine fills water; determine the water absorption rate of the laundry according to the laundry material; determine the water filling amount according to the weight of the laundry before the washing machine fills water and the water absorption rate of the laundry. In this way, the washing machine can more accurately determine the water filling amount required for washing according to the weight of the laundry before water filling and the laundry material, and the number of times of water replenishment during the subsequent washing process will be relatively reduced, which can reduce the overall washing duration and thus improve the efficiency of the washing machine in completing the washing.

[0020] In a second aspect, the present application provides a control method for a washing machine, including: obtaining the weight of the laundry in the washing machine after the pre-dehydration program is completed through a weight sensor; determining the maximum value of the rotation speed of the dehydration program according to the weight of the laundry in the washing machine after the pre-dehydration program is completed; obtaining the weight of the laundry when the washing machine finishes the i-th stage of the dehydration program during the execution of the dehydration program; and adjusting the maximum value of the rotation speed of the dehydration program according to the weight of the laundry when the washing machine finishes the i-th stage of the dehydration program.

[0021] In some embodiments, obtaining the weight of the laundry after the washing machine finishes the i-th stage of the dehydration program specifically includes: obtaining the weight of the laundry before the washing machine fills with water, the weight of the laundry after the washing machine finishes the (i - 1)-th stage of the dehydration program, and the rotation speed of the washing machine when it finishes the i-th stage of the dehydration program; determining the weight of the water in the laundry when the washing machine finishes the (i - 1)-th stage of the dehydration program based on the weight of the laundry before the washing machine fills with water and the weight of the laundry after the washing machine finishes the (i - 1)-th stage of the dehydration program; determining the dehydration loss rate when the washing machine finishes the i-th stage of the dehydration program according to the rotation speed of the washing machine when it finishes the i-th stage of the dehydration program, where the dehydration loss rate is used to represent the percentage of the weight of the water thrown out from the laundry in the weight of the water in the laundry; and determining the weight of the laundry after the washing machine finishes the i-th stage of the dehydration program based on the weight of the laundry after the washing machine finishes the (i - 1)-th stage of the dehydration program, the weight of the water in the laundry when the washing machine finishes the (i - 1)-th stage of the dehydration program, and the dehydration loss rate.

[0022] In some embodiments, the weight of the laundry after the washing machine finishes the i-th stage of the dehydration program satisfies the following relationship: M i = M i-1 - M s × Y i . Wherein, M i represents the weight of the laundry after the washing machine finishes the i-th stage of the dehydration program, M i-1 represents the weight of the laundry after the washing machine finishes the (i - 1)-th stage of the dehydration program, M s represents the weight of the water in the laundry when the washing machine finishes the (i - 1)-th stage of the dehydration program, and Y i represents the dehydration loss rate when the washing machine finishes the i-th stage of the dehydration program.

[0023] In some embodiments, determining the dehydration loss rate when the washing machine finishes the i-th stage of the dehydration program according to the rotation speed of the washing machine when it finishes the i-th stage of the dehydration program specifically includes: obtaining the laundry material; and determining the dehydration loss rate when the washing machine finishes the i-th stage of the dehydration program based on the rotation speed reached by the washing machine when it finishes the i-th stage of the dehydration program and the laundry material.

[0024] In some embodiments, the control method of the washing machine further includes: obtaining the weight of the laundry before the washing machine fills with water and the laundry material; determining the water absorption rate of the laundry according to the laundry material; and determining the water inlet volume based on the weight of the laundry before the washing machine fills with water and the water absorption rate of the laundry.

[0025] In a third aspect, an embodiment of the present application provides a computer-readable storage medium, in which instructions are stored, and when the instructions run on any one of the above-mentioned devices, the device is caused to execute any one of the above-mentioned control methods of the washing machine.

[0026] Fourthly, an embodiment of the present application provides a chip, including: a processor and a memory; the memory is used to store computer-executable instructions, the processor is connected to the memory, and when the chip runs, the processor executes the computer-executable instructions stored in the memory so that the chip executes any one of the above washing machine control methods.

[0027] Fifthly, an embodiment of the present application provides a computer program product containing instructions, which, when running on any one of the above devices, enables the device to execute any one of the above washing machine control methods.

[0028] In the embodiments of the present application, the names of the components of the above device do not limit the device itself. In actual implementation, these components may appear under other names. As long as the functions of the components are similar to those of the embodiments of the present application, they fall within the scope of the claims of the present application and their equivalent technologies.

[0029] In addition, for the technical effects brought by any one of the design methods in the second to fifth aspects, reference can be made to the technical effects brought by different design methods in the first aspect above, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the mechanical structure of a washing machine provided by an embodiment of the present application Figure 1 ;

[0031] Figure 2 Schematic diagram of the mechanical structure of a washing machine provided by an embodiment of the present application Figure 2 ;

[0032] Figure 3 Schematic diagram of the mechanical structure of a washing machine provided by an embodiment of the present application Figure 3 ;

[0033] Figure 4 Schematic diagram of the mechanical structure of a washing machine provided by an embodiment of the present application Figure 4 ;

[0034] Figure 5 Schematic diagram of the circuit system architecture of a washing machine provided by an embodiment of the present application;

[0035] Figure 6 Flowchart of a control method for a washing machine provided by an embodiment of the present application;

[0036] Figure 7 Flowchart showing the process of a washing machine running a dehydration program provided by an embodiment of the present application;

[0037] Figure 8 Flowchart of another control method for a washing machine provided by an embodiment of the present application;

[0038] Figure 9 It is a flowchart of another control method for a washing machine provided by an embodiment of the present application;

[0039] Figure 10 It is a schematic diagram of the hardware structure of a controller provided by an embodiment of the present application. Specific embodiments

[0040] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0041] The terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0042] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations. In addition, when describing pipelines, the terms "connected" and "coupled" used in the present application have the meaning of conducting. The specific meaning needs to be understood in combination with the context.

[0043] In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or more advantageous than other embodiments or design solutions. Exactly speaking, using words such as "exemplary" or "for example" aims to present relevant concepts in a specific manner.

[0044] A washing machine is an essential household appliance in daily life, and its invention makes users' daily life more convenient. After a long period of development, many types have emerged, and the most common type is the drum washing machine.

[0045] The washing principle of a drum washing machine is to imitate the beating of clothes by a mallet. It is controlled by a mechanized program. When the drum rotates, centrifugal force is generated. The centrifugal force and lifting ribs lift the clothes to the highest point, and use gravity to fall, which has the effect of falling. This is repeated, driving the detergent and water to clean the clothes. Finally, the centrifugal force generated by the high-speed rotation of the washing machine drum assembly is used for dehydration to complete the washing.

[0046] When the washing machine is running the dehydration program, the water contained in the clothes is continuously thrown out and the weight of the clothes will also change. The existing washing machine only weighs the clothes once and cannot adjust the working parameters of the dehydration program in real time according to the change of the weight of the clothes, resulting in poor dehydration effect.

[0047] In view of this, an embodiment of the present application provides a washing machine, the controller of which can obtain the weight of the clothes during the dehydration process through a weight sensor, and correct the upper limit of the speed of the washing machine running the dehydration program in real time according to the weight of the clothes, so as to avoid dehydration delays, drum collision and shifting, etc., thereby improving the user experience of the washing machine.

[0048] like Figure 1 As shown, the washing machine 10 may include one or more of the following: a housing 11, a drum assembly 12, a motor 13 (not shown), a spring 14 (not shown), a shock absorber 15 (not shown), a weight sensor 16 (not shown), a water inlet system 17 (not shown), a drainage system 18 and a display 19.

[0049] In some embodiments, the housing 11 may form the overall appearance of the washing machine 10 and seal the contact passage between the inside and the outside of the washing machine to avoid damage to electrical components.

[0050] In some embodiments, the door body 111 can be rotatably disposed on the housing 11 , and the clothes in the washing machine 10 can be taken in and out by opening and closing the door body 111 .

[0051] In some embodiments, an observation window 112 is provided on the door body 111 for observing the washing status of the clothes in the washing machine. The observation window 112 is usually made of transparent glass. Through the transparent glass of the observation window 112, the user can clearly see the washing status of the clothes in the washing machine, which is convenient for the user to confirm whether the washing machine is in a normal operating state. Optionally, the transparent glass of the observation window 112 can adopt a multi-layer structure to play a role in heat insulation and sound insulation to meet the various needs of users.

[0052] In some embodiments, the detergent box 113 can be set in a pull-out manner at the detergent inlet opened on the housing 11. After the user pulls out the detergent box 113 from the detergent inlet, the user can pour detergent (laundry detergent, softener, etc.) into the detergent box 113 from the detergent inlet.Figure 1 In the orientation shown, the detergent dispenser opening is provided on the front panel of the cabinet 11, and the detergent box 113 is set as a cuboid.

[0053] In some embodiments, the drum assembly 12 is disposed inside the cabinet 11 and is used to implement the function of washing clothes in the washing machine.

[0054] In some embodiments, the drum assembly 12 includes an inner drum 121 and an outer drum 122. Among them, the inner drum 121 is used to hold clothes, and the inner drum 121 is provided with dehydration holes. The outer drum 122 can be used to store washing water. When the drainage system and the door body are both closed, since the outer drum 122 does not have other drainage outlets, the washing water can be temporarily stored in the outer drum 122.

[0055] In some embodiments, the motor 13 is disposed inside the cabinet 11 and is directly connected to the inner drum 121, and is used to drive the inner drum 121 to rotate, so as to realize low-speed rotation during washing and rinsing and high-speed rotation during dehydration.

[0056] In some embodiments, the spring 14 is used to connect the outer wall of the outer drum 122 and the upper part of the inner wall of the cabinet 11, and has a buffering effect on the movement of the drum assembly 12. Among them, the spring 14 includes a first spring 141 and a second spring 142. As Figure 2 shown, the first spring and the second spring have the same stiffness and are symmetrically arranged on the left and right sides of the outer drum.

[0057] Optionally, the spring 14 further includes a third spring 143. As Figure 3 shown, the third spring 143 is disposed directly above the outer drum 122 and is used to connect the outer wall of the outer drum 122 and the inside of the upper cover plate of the cabinet 11.

[0058] In some embodiments, the shock absorber 15 is disposed in the lower region inside the cabinet 11. Among them, the two ends of the shock absorber 15 are respectively connected to the outer wall of the outer drum 122 and the inner wall of the cabinet 11, and have a buffering effect on the movement of the drum assembly. Through the combined action of the spring 14 and the shock absorber 15, the movement of the washing machine drum assembly 12 is shock-absorbed, ensuring the stable operation of the washing machine 10.

[0059] In some embodiments, the weight sensor 16 is used to measure the weight of the clothes in the washing machine drum assembly. When clothes are placed in the drum assembly of the washing machine, the change in the pulling force received by the weight sensor causes the weight sensor to deform, and the electrical signal output by the weight sensor also changes. The controller of the washing machine receives the changed electrical signal, processes the electrical signal output by the weight sensor, and obtains data information that can be recognized by the controller. The controller then clears the data according to the weight of the drum assembly borne by the weight sensor, so that the weight obtained through the weight sensor is only the weight of the clothes in the drum assembly.

[0060] In some embodiments, the weight sensor 16 can be disposed at the connection between the spring 14 and the cabinet 11. For example, as Figure 4 shown, the weight sensor 16 is disposed at the connection between the first spring 141 and the cabinet 11.

[0061] In other embodiments, the weight sensor 16 can be disposed at the connection between the spring 14 and the outer cylinder 122.

[0062] For example, as Figure 2 shown, the weight sensor 16 is disposed at the connection between the first spring 141 and the outer cylinder 122. In this case, according to the weight measured by the weight sensor, the angle between the first spring and the vertical direction, and the weight of the cylinder assembly, the weight of the laundry in the cylinder assembly can be determined. Specifically, the relationship between the weight M1 measured by the weight sensor, the angle α between the first spring and the vertical direction, the weight M0 of the cylinder assembly, and the weight M of the laundry in the cylinder assembly is: M1 = (M0 + M) / (2cosα).

[0063] For another example, as Figure 3 shown, the weight sensor 16 is disposed at the connection between the third spring 143 and the outer cylinder 122. In this case, according to the weight measured by the weight sensor, the stiffness of the first spring and the second spring, the stiffness of the third spring, and the weight of the cylinder assembly, the weight of the laundry in the cylinder assembly can be determined. Specifically, the relationship between the weight M1 measured by the weight sensor, the stiffness S1 of the first spring and the second spring, the stiffness S2 of the third spring, the weight M0 of the cylinder assembly, and the weight M of the laundry in the cylinder assembly is: M1 = (M0 + M) * S2 / (2 * S1 + S2).

[0064] In some embodiments, the water inlet system 17 includes components such as a water inlet, a water inlet valve, and a water inlet pipeline, and is used to control the water flow into the cylinder assembly when the washing machine needs to intake water, so that the washing machine can normally execute the washing program.

[0065] In some embodiments, the drainage system 18 includes components such as a drainage valve and a drainage pipeline, and is used to smoothly drain the water flow when the washing machine needs to drain water.

[0066] In some embodiments, the display 19 can be a liquid crystal display or an organic light-emitting diode (OLED) display. The specific type, size, and resolution of the display are not limited. Those skilled in the art can understand that the display can be changed in terms of performance and configuration as needed. The display 19 can be used to display the control panel of the washing machine. The washing machine can feedback the current state of the washing machine through the display, such as being in the washing state or the dehydration state, etc.

[0067] Figure 5An exemplary circuit system architecture diagram of the washing machine 10 is shown.

[0068] As Figure 5 shown, the washing machine 10 may further include: a controller 20, a water level sensor 21, a load eccentricity detection device 22, a communication device 23, a human-machine interaction device 24, and a power supply 25. Among them, the motor 13, the weight sensor 16, the water inlet system 17, the drainage system 18, the display 19, the water level sensor 21, the load eccentricity detection device 22, the communication device 23, the human-machine interaction device 24, and the power supply 25 are all connected to the controller 20.

[0069] In some embodiments, the controller 20 refers to a device that can generate an operation control signal according to an instruction operation code and a timing signal to instruct the washing machine 10 to execute a control instruction. Exemplarily, the controller 20 may be a central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The controller may also be other devices with processing functions, such as circuits, devices, or software modules, and the embodiments of the present application do not impose any restrictions thereon.

[0070] In some embodiments, the water level sensor 21 refers to a device that can detect the water level height in the washing tub and convert the detected water level height into an available output signal. In some embodiments of the present application, the water level sensor 21 can be used to obtain the water level in the washing machine. When the water level in the washing machine is lower than a preset water level height, the controller controls the water inlet system to start filling water to supplement the water volume in the washing machine.

[0071] In some embodiments, the load eccentricity detection device 22 is used to obtain the out-of-balance (OOB) value of the laundry in the washing machine at different rotation speeds. By obtaining the OOB value of the washing machine, the upper limit of the rotation speed of the motor for operating the dehydration program of the washing machine can be adjusted according to the OOB value and the weight of the laundry in the washing machine, so that the washing machine can operate the dehydration program more stably.

[0072] In some embodiments, the communication device 23 is a component for communicating with external devices or external servers according to various communication protocol types. For example, the communication device may include at least one of a Wi-Fi chip, a Bluetooth communication protocol chip, a wired Ethernet communication protocol chip, other network communication protocol chips or a near-field communication protocol chip, and an infrared receiver. The washing machine 10 can transmit control signals and data signals to the terminal device used by the user through the communication device 23. For example, the washing machine 10 receives a start instruction from the terminal device through the communication device 23, and according to the start instruction, the controller 20 of the washing machine 10 controls the washing machine to start washing clothes.

[0073] In some embodiments, the human-machine interaction device 24 is used to realize the interaction between the user and the washing machine 10. The human-machine interaction device 24 may include one or more of physical buttons or a touch display panel. For example, the user can manually start the washing machine to work through the human-machine interaction device 24, or set the washing program for the washing machine 10 to run through the human-machine interaction device 24.

[0074] In some embodiments, the power supply 25 is used to provide power support for the operation of each electrical component of the washing machine 10 under the control of the controller 20. The power supply 25 may include a battery and related control circuits.

[0075] It can be understood that the structure schematically shown in the embodiments of the present invention does not constitute a specific limitation on the washing machine. In other embodiments of the present application, the washing machine may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0076] The following will describe the specific solutions of the present application in detail with reference to the accompanying drawings of the specification.

[0077] The embodiment of the present application provides a control method for a washing machine, as Figure 6 shown, the method includes the following steps:

[0078] S101. The controller obtains the weight of the clothes in the washing machine after the pre-dehydration program is executed through the weight sensor.

[0079] In some embodiments, after the washing machine executes the rinsing program and drains the water in the drum assembly, the washing machine runs the pre-dehydration program. Among them, the rotation speed of the washing machine when running the pre-dehydration program is less than the minimum resonance speed of the washing machine, and the water absorbed by the clothes can be thrown out as much as possible. The range of the resonance speed of the washing machine is determined by the resonance characteristics of the washing machine.

[0080] S102. According to the weight of the clothes in the washing machine after the pre-dehydration program is executed, the controller determines the maximum value of the rotation speed of the dehydration program.

[0081] In some embodiments, there is a corresponding relationship between the weight of the laundry in the washing machine and the maximum rotation speed of the dehydration program. The controller of the washing machine determines the maximum rotation speed of the dehydration program according to the weight of the laundry after the pre-dehydration program is executed by the washing machine, through the corresponding relationship existing between the weight of the laundry in the washing machine and the maximum rotation speed of the dehydration program, and starts to run the dehydration program.

[0082] S103. During the execution of the dehydration program, the controller obtains the weight of the laundry after the i-th stage of the dehydration program is executed by the washing machine.

[0083] In the embodiments of the present application, the dehydration program run by the washing machine includes multiple dehydration stages. The division of the dehydration stages can be made at fixed time intervals. For example, every 3 minutes is a dehydration stage. Alternatively, the division of the dehydration stages can also be made at fixed rotation speed intervals. For example, every time the rotation speed increases by 5 rpm is a dehydration stage.

[0084] S104. According to the weight of the laundry after the i-th stage of the dehydration program is executed by the washing machine, the controller adjusts the maximum rotation speed of the dehydration program.

[0085] In some embodiments, the controller of the washing machine can adjust the maximum rotation speed of the dehydration program according to the weight of the laundry after the i-th stage of the dehydration program is executed by the washing machine and the OOB value of the laundry in the washing machine at the current rotation speed. For example, when the rotation speed after the i-th stage of the dehydration program is executed by the washing machine is 300 rpm, and the maximum rotation speed of the dehydration program determined by the controller according to the OOB value of the laundry in the washing machine measured at the current rotation speed and the weight of the laundry after the i-th stage of the dehydration program is executed by the washing machine is 800 rpm, the rotation speed of the washing machine running the dehydration program is gradually increased to 800 rpm and then the dehydration program stops.

[0086] Optionally, the weight of the laundry during the execution of the dehydration program by the washing machine can be divided into multiple weight ranges, and different weight ranges correspond to different maximum rotation speeds of the dehydration program. For example, if the maximum rotation speed of the dehydration program corresponding to the laundry weight range of [5, 5.5] kg is 600 rpm, then when the weight of the laundry after the i-th stage of the dehydration program is executed by the washing machine decreases from 5.4 kg to 5.1 kg, the maximum rotation speed of the dehydration program does not change.

[0087] It should be understood that when the rotation speed gradually increases, the water content in the laundry will tend to be stable, and the weight of the laundry will also tend to be stable. Then, the maximum value of the dehydration program determined according to the weight of the laundry will no longer change. When the rotation speed of the washing machine gradually increases to the maximum rotation speed, that is, when the trigger condition for the washing machine to end the dehydration program is reached, the washing machine stops running.

[0088] Figure 6The technical solutions shown bring at least the following beneficial effects: Compared with the method in the related art that only determines the maximum value of the rotation speed according to the weight of the clothes before dehydration, in the dehydration process of the embodiment of the present application, for example, in the i-th stage of the dehydration program, the weight of the clothes is re-determined, and based on the re-determined weight of the clothes, the maximum value of the rotation speed of the dehydration program is corrected. Since the corrected maximum value of the rotation speed is more in line with the current dehydration situation than the maximum value of the rotation speed determined before dehydration, the dehydration program can continue to be executed based on the corrected maximum value of the rotation speed, which can avoid problems such as unbalanced rotation of the washing machine drum assembly and too long dehydration time caused by the change of the weight of the clothes during the dehydration process, so as to obtain a better dehydration effect.

[0089] Taking the washing machine as an example to determine the maximum value of the rotation speed of the dehydration program according to the weight of the clothes during the dehydration process and the OOB value corresponding to the current rotation speed, the control flow when the washing machine runs the dehydration program is introduced exemplarily.

[0090] As Figure 7 shown, after the washing machine finishes running the rinsing program, it starts to run the dehydration program:

[0091] (1) Run the pre-dehydration program. By running the pre-dehydration program, the water in the clothes is thrown out as much as possible, and the measured weight of the clothes is closer to the weight of the clothes before water inlet.

[0092] (2) Obtain the weight of the clothes in the washing machine after the pre-dehydration program is executed.

[0093] (3) Determine the weight range where the weight of the clothes is located.

[0094] (4) Obtain the current rotation speed and determine the OOB detection value corresponding to the current rotation speed.

[0095] (5) Determine the maximum value of the rotation speed of the dehydration program according to the weight range of the clothes and the OOB detection value.

[0096] (6) End the dehydration when the rotation speed of the dehydration program reaches the maximum value.

[0097] In some embodiments, as Figure 8 shown, step S103 can be specifically implemented as the following steps:

[0098] S201. The controller obtains the weight of the clothes in the washing machine before water inlet, the weight of the clothes after the (i - 1)-th stage of the dehydration program is executed by the washing machine, and the rotation speed when the washing machine finishes the i-th stage of the dehydration program.

[0099] Among them, the weight of the clothes in the washing machine before water inlet can be measured by a weight sensor, and the rotation speed when the washing machine runs a certain stage of the dehydration program can be measured by a motor.

[0100] S202. Based on the weight of the laundry before water inlet of the washing machine and the weight of the laundry after the (i - 1)-th stage of the dehydration program is executed by the washing machine, the controller determines the weight of the water in the laundry after the (i - 1)-th stage of the dehydration program is executed by the washing machine.

[0101] In some embodiments, the weight of the laundry before water inlet of the washing machine is the weight of the laundry completely without water. Subtracting the weight of the laundry before water inlet of the washing machine from the weight of the laundry after the (i - 1)-th stage of the dehydration program is executed by the washing machine, the weight of the water in the laundry after the (i - 1)-th stage of the dehydration program is executed by the washing machine can be obtained. For example, if the weight of the laundry before water inlet of the washing machine is 5 kg and the weight of the laundry after the (i - 1)-th stage of the dehydration program is executed by the washing machine is 8 kg, then the weight of the water in the laundry after the (i - 1)-th stage of the dehydration program is executed by the washing machine is 3 kg.

[0102] S203. Based on the rotation speed when the (i)-th stage of the dehydration program is executed by the washing machine, the controller determines the dehydration loss rate when the (i)-th stage of the dehydration program is executed by the washing machine.

[0103] Among them, the dehydration loss rate is used to represent the percentage of the weight of the water thrown out from the laundry in the weight of the water in the laundry.

[0104] It should be understood that the greater the rotation speed of the washing machine during the dehydration program, the more water contained in the laundry is thrown out, that is, the greater the dehydration loss rate.

[0105] Optionally, when the laundry material changes, the dehydration loss rate also changes.

[0106] Optionally, the dehydration loss rates corresponding to different rotation speeds and different laundry materials can be a constant or non-linear data.

[0107] Optionally, the dehydration loss rates corresponding to different rotation speeds and different laundry materials can be obtained by technicians through a large number of experiments and calculations during the factory stage.

[0108] In some embodiments, the controller can also determine the dehydration loss rate when the (i)-th stage of the dehydration program is executed by the washing machine according to the laundry material and the rotation speed reached when the (i)-th stage of the dehydration program is executed by the washing machine. In this way, taking the laundry material and the rotation speed into consideration at the same time, the obtained dehydration loss rate is more accurate, and the laundry weight calculated subsequently is also more accurate.

[0109] S204. Based on the weight of the laundry after the (i - 1)-th stage of the dehydration program is executed by the washing machine, the weight of the water in the laundry after the (i - 1)-th stage of the dehydration program is executed by the washing machine, and the dehydration loss rate, the controller determines the weight of the laundry after the (i)-th stage of the dehydration program is executed by the washing machine.

[0110] Among them, the weight of the laundry after the (i)-th stage of the dehydration program is executed by the washing machine is Mi 1. The weight of the laundry M after the (i - 1)-th stage of the dehydration program is executed by the washing machine i-1 2. The weight of the water in the laundry M when the (i - 1)-th stage of the dehydration program is executed by the washing machine s 3. And the dehydration loss rate Y when the i-th stage of the dehydration program is executed by the washing machine i The relationship among them can be expressed as M i = M i-1 - M s × Y i .

[0111] It should be understood that the weight of the laundry at the 0-th stage of the dehydration program is the weight of the laundry after the pre-dehydration program is executed by the washing machine.

[0112] Figure 8 The technical solution shown at least brings the following beneficial effects: The technical solution provided in this application divides the dehydration process of the washing machine into multiple stages. By obtaining the weight of the laundry at each stage and the rotation speed of the washing machine, the situation where the weight of the laundry changes as water is thrown out during the dehydration process is taken into account. In this way, the weight of the laundry during the dehydration process can be obtained more accurately in real time. According to the weight of the laundry during the dehydration process, the maximum value of the rotation speed of the obtained dehydration program is also more accurate, and thus a better laundry dehydration effect can be obtained.

[0113] In some embodiments, before the washing machine starts to fill with water, the washing machine can determine the water intake according to the weight of the laundry in the tub assembly and the material of the laundry put in by the user. As Figure 9 shown, the embodiment of this application also provides a control method for a washing machine. The method includes the following steps:

[0114] S301. The controller obtains the weight of the laundry and the material of the laundry before the washing machine fills with water.

[0115] Among them, the weight of the laundry before the washing machine fills with water can be measured by a weight sensor. The specific measurement method is as described above and will not be elaborated here.

[0116] Optionally, the controller obtains the material of the laundry, which can be specifically implemented in any of the following ways:

[0117] Way 1. The washing machine can collect an image in the tub assembly by installing an image acquisition device in the washing machine, and perform image recognition on the image in the tub assembly to determine the material of the laundry.

[0118] Way 2. The washing machine receives the user's setting operation on the material of the laundry; in response to this operation, the washing machine determines the material of the laundry.

[0119] S302. According to the material of the laundry, the controller determines the water absorption rate of the laundry.

[0120] Among them, the water absorption rate of the clothing represents the ability of the clothing to absorb water under standard atmospheric pressure and is expressed as a percentage.

[0121] Exemplarily, the clothing material can be a combination of one or more of silk fabrics, cotton and linen fabrics, synthetic fibers, etc., and is not limited thereto.

[0122] It should be understood that the water absorption rates of clothes made of different materials are also different, and the amount of water they can absorb is also different. For example, the water absorption rate of silk fabric is higher than that of synthetic fiber. For the same weight of silk fabric and synthetic fiber, the water content of the silk fabric after absorbing water is higher than that of the synthetic fiber. Therefore, when the water absorption rate of the clothing material put into the washing machine by the user is relatively high, the amount of water that the washing machine needs to intake will also increase accordingly.

[0123] Optionally, the water absorption rates of different clothing materials can be obtained by technicians through a large number of experiments and calculations at the factory stage.

[0124] S303. According to the weight of the clothing before the washing machine intakes water and the water absorption rate of the clothing, the controller determines the water intake amount.

[0125] Among them, the relationship between the weight M0 of the clothing before the washing machine intakes water, the water absorption rate ρ of the clothing, and the water intake amount V is: V = M0 × ρ.

[0126] Optionally, if there is still stored water V1 in the washing machine originally, then the controller determines the water intake amount of the washing machine as V = M0 × ρ + V1 according to the weight M0 of the clothing before the washing machine intakes water and the water absorption rate ρ of the clothing.

[0127] Figure 9 The technical solution shown brings at least the following beneficial effects: The washing machine can more accurately determine the water intake amount required for washing according to the weight of the clothing before water intake and the clothing material, and the number of water replenishment times during the subsequent washing process will also be relatively reduced, which can reduce the overall washing duration and thus improve the efficiency of the washing machine to complete the washing.

[0128] It can be seen that the above mainly introduces the solution provided by the embodiment of the present application from the perspective of the method. To implement the above functions, the embodiment of the present application provides the corresponding hardware structure and / or software module for executing each function. Those skilled in the art should easily realize that, combining the modules and algorithm steps of each example described in the embodiments disclosed herein, the embodiments of the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0129] Embodiments of the present application can divide the controller into functional modules according to the above method examples. For example, each functional module can be corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of a software functional module. Optionally, the division of modules in the embodiments of the present application is illustrative, only a logical function division, and there can be other division methods in actual implementation.

[0130] Embodiments of the present application also provide a schematic diagram of the hardware structure of a controller, as Figure 10 shown. The controller 400 includes a processor 401. Optionally, it further includes a memory 402 and a communication interface 403 connected to the processor 401. The processor 401, the memory 402, and the communication interface 403 are connected through a bus 404.

[0131] The processor 401 can be a central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The processor 401 can also be any other device with processing functions, such as a circuit, a device, or a software module. The processor 401 can also include multiple CPUs, and the processor 401 can be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. Here, the processor can refer to one or more devices, circuits, or processing cores for processing data (such as computer program instructions).

[0132] The memory 402 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM), or other types of dynamic storage devices that can store information and instructions. It can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM), or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media, or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer. The embodiments of the present application do not impose any restrictions on this. The memory 402 can exist independently or be integrated with the processor 401. Among them, the memory 402 can contain computer program code. The processor 401 is used to execute the computer program code stored in the memory 402, thereby implementing the control method provided by the embodiments of the present application.

[0133] The communication interface 403 can be used to communicate with other devices or communication networks (such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.). The communication interface 403 can be a module, a circuit, a transceiver, or any device capable of implementing communication.

[0134] The bus 404 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus 404 can be divided into an address bus, a data bus, a control bus, etc. For the sake of representation, Figure 10 only a thick line is used to represent it in the figure, but it does not mean that there is only one bus or one type of bus.

[0135] The embodiments of the present application also provide a computer-readable storage medium, including computer-executable instructions, which when running on a computer, cause the computer to execute any one of the control methods of the washing machine provided in the above embodiments.

[0136] The embodiment of the present application also provides a computer program product including computer-executable instructions. When it runs on a computer, it enables the computer to execute any one of the control methods of the washing machine provided in the above embodiments.

[0137] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer-executable instructions. When the computer-executable instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer-executable instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer-executable instructions can be transmitted from a website, a computer, a server, or a data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that the computer can access or a data storage device such as a server or a data center that includes one or more integrated media. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

[0138] Although the present application has been described in conjunction with various embodiments herein, however, in the process of implementing the claimed present application, those skilled in the art can understand and implement other variations of the disclosed embodiments by viewing the drawings, the disclosure content, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit can implement several functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0139] Although the present application has been described in connection with specific features and their embodiments, it is obvious that various modifications and combinations can be made without departing from the spirit and scope of the present application. Accordingly, the present specification and the drawings are merely exemplary illustrations of the present application defined by the appended claims, and are considered to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these changes and modifications.

[0140] As described above, the above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A washing machine, characterized in that, Comprising: Cabinet; Drum assembly; A weight sensor for detecting the weight of the laundry in the drum assembly; A controller electrically connected to the weight sensor and configured to: Obtain the weight of the laundry after the pre-dehydration program is executed by the washing machine through the weight sensor; Determine the maximum value of the rotation speed of the dehydration program according to the weight of the laundry after the pre-dehydration program is executed by the washing machine; During the execution of the dehydration program, obtain the weight of the laundry before the washing machine fills with water, the weight of the laundry at the (i - 1)-th stage after the dehydration program is executed by the washing machine, and the rotation speed when the washing machine finishes the i-th stage of the dehydration program; Determine the weight of the water in the laundry at the (i - 1)-th stage after the dehydration program is executed by the washing machine according to the weight of the laundry before the washing machine fills with water and the weight of the laundry at the (i - 1)-th stage after the dehydration program is executed by the washing machine; Determine the dehydration loss rate when the washing machine finishes the i-th stage of the dehydration program according to the rotation speed when the washing machine finishes the i-th stage of the dehydration program, where the dehydration loss rate is used to represent the percentage of the weight of the water thrown out from the laundry in the weight of the water in the laundry; Determine the weight of the laundry at the i-th stage after the dehydration program is executed by the washing machine according to the weight of the laundry at the (i - 1)-th stage after the dehydration program is executed by the washing machine, the weight of the water in the laundry at the (i - 1)-th stage after the dehydration program is executed by the washing machine, and the dehydration loss rate; Adjust the maximum value of the rotation speed of the dehydration program according to the weight of the laundry at the i-th stage after the dehydration program is executed by the washing machine.

2. The washing machine according to claim 1, characterized in that, The weight of the laundry at the i-th stage after the dehydration program is executed by the washing machine satisfies the following relationship: M i = M i-1 -M s × Y i ; Among them, M i represents the weight of the laundry after the i-th stage of the dehydration program is completed by the washing machine, and M i-1 represents the weight of the laundry after the (i - 1)-th stage of the dehydration program is completed by the washing machine, and M s represents the weight of the moisture in the laundry when the (i - 1)-th stage of the dehydration program is completed by the washing machine, and Y i represents the dehydration loss rate when the i-th stage of the dehydration program is completed by the washing machine.

3. The washing machine according to claim 1, characterized in that, The controller is configured to: determine the dehydration loss rate when the washing machine finishes the i-th stage of the dehydration program according to the rotation speed when the washing machine finishes the i-th stage of the dehydration program, and specifically perform the following steps: Obtain the laundry material; Determine the dehydration loss rate when the washing machine finishes the i-th stage of the dehydration program according to the rotation speed reached when the washing machine finishes the i-th stage of the dehydration program and the laundry material.

4. The washing machine according to any one of claims 1 to 3, characterized in that, The controller is further configured to: Obtain the weight of the laundry before the washing machine fills with water and the laundry material; Determine the water absorption rate of the laundry according to the laundry material; Determine the water intake according to the weight of the laundry before the washing machine fills with water and the water absorption rate of the laundry.

5. A control method for a washing machine, characterized in that, Comprising: Obtain the weight of the laundry after the pre-dehydration program is executed by the washing machine through the weight sensor; Determine the maximum value of the rotation speed of the dehydration program according to the weight of the laundry after the pre-dehydration program is executed by the washing machine; During the execution of the dehydration program, obtain the weight of the laundry before the washing machine fills with water, the weight of the laundry at the (i - 1)-th stage after the dehydration program is executed by the washing machine, and the rotation speed when the washing machine finishes the i-th stage of the dehydration program; Determine the weight of the water in the laundry at the (i - 1)-th stage after the dehydration program is executed by the washing machine according to the weight of the laundry before the washing machine fills with water and the weight of the laundry at the (i - 1)-th stage after the dehydration program is executed by the washing machine; Determine the dehydration loss rate of the washing machine when the i-th stage of the dehydration program is completed according to the rotation speed of the washing machine when the i-th stage of the dehydration program is completed, where the dehydration loss rate is used to represent the percentage of the weight of the water thrown out from the clothes in the weight of the water in the clothes; Determine the weight of the clothes of the washing machine when the i-th stage of the dehydration program is completed according to the weight of the clothes of the washing machine when the (i - 1)-th stage of the dehydration program is completed, the weight of the water in the clothes of the washing machine when the (i - 1)-th stage of the dehydration program is completed, and the dehydration loss rate; Adjust the maximum value of the rotation speed of the dehydration program according to the weight of the clothes of the washing machine when the i-th stage of the dehydration program is completed.

6. The method according to claim 5, wherein The weight of the clothes of the washing machine when the i-th stage of the dehydration program is completed satisfies the following relationship: M i = M i-1 - M s × Y i ; Among them, M i represents the weight of the laundry after the i-th stage of the dehydration program is completed by the washing machine, and M i-1 represents the weight of the laundry after the (i - 1)-th stage of the dehydration program is completed by the washing machine, and M s represents the weight of the moisture in the laundry when the (i - 1)-th stage of the dehydration program is completed by the washing machine, and Y i represents the dehydration loss rate when the i-th stage of the dehydration program is completed by the washing machine.

7. The method according to claim 5, characterized in that The step of determining the dehydration loss rate of the washing machine when the i-th stage of the dehydration program is completed according to the rotation speed of the washing machine when the i-th stage of the dehydration program is completed specifically includes: Obtain the clothing material; Determine the dehydration loss rate of the washing machine when the i-th stage of the dehydration program is completed according to the rotation speed reached by the washing machine when the i-th stage of the dehydration program is completed and the clothing material.

8. The method according to any one of claims 5 to 7, characterized in that The method further includes: Obtain the weight of the clothes before the washing machine fills with water and the clothing material; Determine the water absorption rate of the clothes according to the clothing material; Determine the water intake according to the weight of the clothes before the washing machine fills with water and the water absorption rate of the clothes.

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