Washing Machines and Their Control Methods

Abstract

This application relates to a washing machine and its control method. The washing machine includes an inner tub, a balancing interlayer, and at least one set of pressure sensors. The balancing interlayer is disposed on the outer periphery of the inner tub. The balancing interlayer has several dispensing slots, and the set of pressure sensors includes two pressure sensors symmetrically distributed on the inner wall of the inner tub. The solution provided by this application can control whether to dispense particulate matter into the dispensing slots of the balancing interlayer based on the magnitude of the force measured by the symmetrical pressure sensors, thereby enabling the washing machine to maintain the balance of the inner tub during spin-drying and avoiding the problem of the washing machine's lifespan being affected by imbalance and drum collision during spin-drying.

Description

Technical Field

[0001] This application relates to the field of washing machine technology, and more particularly to washing machines and their control methods. Background Technology

[0002] As a common household appliance, washing machines liberate people from the labor of washing clothes, save time, and bring great convenience to daily life, thus being widely loved by users. However, most washing machines on the market generate significant vibration during the spin-drying process. This vibration can cause serious noise pollution, and excessive vibration can also lead to drum-collision, damaging washing machine components and shortening its lifespan.

[0003] Washing machine drum collisions during spin-drying are usually caused by uneven distribution of clothes inside the drum, leading to an imbalance. Therefore, reducing drum imbalance during the spin-drying process can greatly reduce the risk of excessive vibration causing drum collisions. Currently, the commonly used method for detecting eccentric drum collisions involves a stop switch installed on the machine. When the spin-drying is unbalanced, the drum hits the anti-collision bar, triggering the stop switch and stopping the machine. However, this machine stoppage affects the normal spin-drying process, requiring manual repositioning of the clothes before spin-drying can continue, which is inconvenient.

[0004] While existing technologies offer methods for automatically adjusting for uneven clothing distribution—for example, patent application CN105200712 discloses a washing machine spin-drying balance method—this method detects imbalance by running the machine at low speed before spin-drying, locates the unbalanced position, and then introduces water into the symmetrically positioned clothes. This method achieves balance by adding weight to the lighter clothes in the drum, but the amount of water absorbed by the clothes before spin-drying is negligible.

[0005] The domestic patent application CN114836941 uses the difference in deformation of the elastic balance rods during operation to balance the washing machine—by adding water. This method measures the difference in deformation of at least two elastic balance rods to detect eccentricity in the washing machine and compensates by adding water. Besides the issue of clothes absorbing water, similar to the problem in patent CN105200712, this method may also lead to repeated spin-drying and water replenishment when the balancing problem cannot be resolved.

[0006] Therefore, in view of the fact that the above-mentioned washing machine's method of adjusting the clothes' eccentricity and inner drum misalignment by adding water is not very effective, this application needs to provide a washing machine that can adjust the weight distribution of the washing machine when the inner drum is misaligned during the spin cycle, thereby maintaining the balance of the drum and avoiding the washing machine from hitting the drum during the spin cycle, which would affect the service life of the washing machine. Summary of the Invention

[0007] To overcome the problems existing in the related technology, this application provides a washing machine that can adjust the weight distribution of the washing machine to maintain the balance of the drum when the inner drum is misaligned during the spin-drying process, thereby avoiding the washing machine from hitting the drum during spin-drying and affecting the service life of the washing machine.

[0008] The first aspect of this application provides a washing machine, including an inner tub, the washing machine further including a balance jacket and at least a set of pressure sensors;

[0009] The balancing interlayer is disposed on the outer periphery of the inner barrel;

[0010] The balancing interlayer is provided with several dispensing slots;

[0011] The set of pressure sensors includes two pressure sensors symmetrically distributed on the inner wall of the inner barrel.

[0012] In one embodiment, the washing machine further includes M speed sensors, each of which has at least one speed sensor on its radial plane, and the projection of any point in the radial plane onto the line connecting the inner tub shaft coincides with the projection on the same horizontal plane.

[0013] In one embodiment, the delivery slot is disposed on the same radial plane as the pressure sensor, and the delivery slot is provided with a bottom door and a bottom switch, the bottom switch controlling the opening and closing of the bottom door.

[0014] In one embodiment, the washing machine further includes a particulate matter recovery device disposed below the balance interlayer and connected to the dispensing tank.

[0015] In one embodiment, the delivery slot is provided with a top door and a top switch, the top switch controlling the opening and closing of the top door.

[0016] In one embodiment, the washing machine further includes L elastic balance bars, which are disposed on the outer wall or bottom surface of the balance interlayer.

[0017] A second aspect of this application provides a washing machine control method for controlling any of the washing machines mentioned in the above embodiments, characterized in that: the washing machine control method includes the following steps:

[0018] The washing machine control method includes the following steps:

[0019] Start the dehydration process;

[0020] Obtain the values ​​from two pressure sensors with relatively symmetrical distributions to obtain F1 and F2;

[0021] Calculate the difference between F1 and F2 to obtain the difference ΔF;

[0022] The difference ΔF is compared with the preset value X, and the control is based on the comparison result to determine whether to add particulate matter into the feeding trough in the balance interlayer.

[0023] In one embodiment, comparing the difference ΔF with a preset value X, and controlling whether to add particulate matter into the feeding slot in the balancing interlayer based on the comparison result includes:

[0024] If the difference ΔF is less than the preset value X, the dehydration process continues.

[0025] If the difference ΔF is greater than or equal to the preset value X, then particulate matter is added to the feeding trough in the balance interlayer.

[0026] In one embodiment, the step of adding particulate matter to the feeding slot in the balancing interlayer if the difference ΔF is greater than or equal to a preset value X includes:

[0027] If the difference ΔF is greater than or equal to the preset value X, obtain the values ​​of the speed sensors on the same radial plane as the pressure sensors F1 and F2 obtained in the previous steps to obtain ω1 and ω2. According to the formula F=mωr2, obtain m1 and m2; put particles with a mass of Δm into the feeding trough in the balance interlayer, where Δm is the difference between m1 and m2.

[0028] In one implementation, the values ​​of two symmetrical pressure sensors are obtained to obtain F1 and F2;

[0029] The difference between F1 and F2 is calculated to obtain the difference ΔF, which includes:

[0030] Obtain the values ​​of two symmetrical pressure sensors on the washing machine; obtain multiple sets of F1 and F2; calculate the difference between F1 and F2 to obtain multiple difference values ​​ΔF;

[0031] Take the maximum difference ΔF MAX Proceed to the next step.

[0032] The technical solution provided in this application may include the following beneficial effects:

[0033] This washing machine includes an inner tub, a balance jacket, and at least one set of pressure sensors; the balance jacket is disposed on the outer periphery of the inner tub; the balance jacket is provided with several dispensing slots;

[0034] A set of pressure sensors includes two pressure sensors symmetrically distributed on the inner wall of the inner tub. During the spin-drying process, the centripetal force on the clothes inside the inner tub is provided by the elastic force of the inner tub wall on the clothes, with the direction perpendicular to the inner tub wall. According to Newton's third law of motion, the clothes exert a reaction force of the same magnitude but opposite direction on the inner tub wall. This force is generated by the compression of the clothes against the inner tub wall during spin-drying. Since the pressure sensors are symmetrically distributed on the inner wall of the inner tub, they can measure the force at symmetrical positions. In this embodiment, the magnitude of the force measured by the mutually symmetrical pressure sensors is used to control the addition of particulate matter to the feeding trough in the balance layer. This allows the washing machine to maintain the balance of the inner tub during spin-drying, thereby preventing the washing machine from colliding with the tub due to imbalance during spin-drying, which could affect its lifespan.

[0035] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0036] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0037] Figure 1 This is a schematic diagram of the structure of a washing machine shown in an embodiment of this application;

[0038] Figure 2 This is a force analysis diagram of the inner barrel without displacement, as shown in the embodiments of this application;

[0039] Figure 3 This is a force analysis diagram showing the inner barrel shifting as illustrated in an embodiment of this application;

[0040] Figure 4 This is a schematic flowchart of a washing machine control method shown in an embodiment of this application;

[0041] Figure 5 This is another schematic diagram of the washing machine control method shown in the embodiments of this application.

[0042] Figure label:

[0043] 1. Inner tank; 2. Balancing interlayer; 21. Feeding trough; 211. Bottom door of the trough; 3. Pressure sensor; 4. Speed ​​sensor; 5. Particulate matter recovery device; 6. Particulate matter; 7. Elastic balance bar. Detailed Implementation

[0044] Preferred embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0045] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0046] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0047] Example 1

[0048] As a common household appliance, washing machines liberate people from the labor of washing clothes, save time, and bring great convenience to daily life, thus being widely loved by users. However, most washing machines on the market generate significant vibration during the spin-drying process. This not only causes serious noise pollution but also leads to drum collisions, damaging washing machine components and reducing the machine's lifespan.

[0049] Washing machine drum collisions during spin-drying are caused by uneven distribution of clothes inside the drum. Therefore, detecting and preventing this imbalance during the spin-drying process can greatly reduce the risk of excessive vibration causing drum collisions. A common method for detecting drum collisions involves using a stop switch installed on the machine. When the spin-drying is unbalanced, the drum hits the anti-collision bar, triggering the stop switch and stopping the machine. However, this stopping disrupts the normal spin-drying process, requiring manual repositioning of the clothes before the spin-drying can continue, which is inconvenient.

[0050] Existing technologies include methods for automatically adjusting for uneven clothing distribution. For example, patent application CN105200712 discloses a method for balancing the spin cycle of a washing machine: it detects imbalance by running the machine at low speed before spin-drying, locates the unbalanced position, and then introduces water into the symmetrically positioned clothes. This method achieves balance by adding weight to the lighter parts of the clothes in the drum, but the amount of water absorbed by the clothes before spin-drying is negligible.

[0051] The domestic patent application CN114836941 uses the difference in deformation of the elastic balance rods during operation to balance the washing machine—by adding water. This method measures the difference in deformation of at least two elastic balance rods to detect eccentricity in the washing machine and compensates by adding water. Besides the issue of clothes absorbing water, similar to the problem in patent CN105200712, this method may also lead to repeated spin-drying and water replenishment when the balancing problem cannot be resolved.

[0052] Therefore, in view of the fact that the above-mentioned washing machine's method of adjusting the clothes' eccentricity by adding water is not very effective, this application needs to provide a washing machine that can adjust the weight distribution of the washing machine when the inner drum is eccentric during the spin-drying process, thereby maintaining the balance of the drum and avoiding the washing machine hitting the drum during the spin-drying process, which would affect the service life of the washing machine.

[0053] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0054] Figure 1 This is a schematic diagram of the structure of a washing machine shown in an embodiment of this application;

[0055] See Figure 1 .

[0056] The washing machine of this application embodiment includes a shell, an outer tub and an inner tub 1, and the washing machine also includes a balance jacket 2 and at least one set of pressure sensors 3.

[0057] In this embodiment of the application, the outer barrel is disposed inside the shell, and the inner barrel 1 is disposed inside the outer barrel.

[0058] The balancing interlayer 2 is disposed on the outer periphery of the inner tub 1, that is, the balancing interlayer 2 is disposed around the outer wall of the inner tub 1. The width of the balancing interlayer 2 is not limited in this embodiment of the application. In this embodiment of the application, the width refers to the distance from the inner wall of the balancing interlayer 2 to the outer wall of the inner tub 1.

[0059] The balancing interlayer 2 is provided with a plurality of dispensing slots 21; the number of dispensing slots 21 is not limited in this embodiment of the application, and can be set according to the actual situation. The number, size and shape of the dispensing slots 21 are all within the protection scope of this application.

[0060] A set of pressure sensors 3 includes two pressure sensors 3 symmetrically distributed on the inner wall of the inner tub 1. The pressure sensors 3 are used to detect the pressure on the inner wall of the inner tub 1. Furthermore, the number of pressure sensors 3 in this embodiment is not limited.

[0061] The beneficial effects of the embodiments of this application are as follows: The washing machine includes an inner tub, and the washing machine also includes a balance jacket and at least one set of pressure sensors; the balance jacket is disposed on the outer periphery of the inner tub; the balance jacket is provided with a plurality of dispensing slots;

[0062] A set of pressure sensors includes two pressure sensors symmetrically distributed on the inner wall of the inner tub. During the spin-drying process, the centripetal force on the clothes inside the inner tub is provided by the elastic force of the inner tub wall on the clothes, with the direction perpendicular to the inner tub wall. According to Newton's third law of motion, the clothes exert a reaction force of the same magnitude but opposite direction on the inner tub wall. This force is generated by the compression of the clothes against the inner tub wall during spin-drying. Since the pressure sensors are symmetrically distributed on the inner wall of the inner tub, they can measure the force at symmetrical positions. In this embodiment, the magnitude of the force measured by the mutually symmetrical pressure sensors is used to control the addition of particulate matter to the feeding trough in the balance layer. This allows the washing machine to maintain the balance of the inner tub during spin-drying, thereby preventing the washing machine from colliding with the tub due to imbalance during spin-drying, which could affect its lifespan.

[0063] Example 2

[0064] The washing machine described in Embodiment 1 above can maintain the balance of the inner drum during spin-drying, thereby preventing the washing machine from bumping against the drum during spin-drying and affecting its service life. This application will further invent and design the washing machine of the above embodiment to make the washing machine of this application more applicable.

[0065] Figure 1 This is a schematic diagram of the structure of a washing machine shown in an embodiment of this application;

[0066] Figure 2 This is a force analysis diagram of the inner barrel without displacement, as shown in the embodiments of this application;

[0067] Figure 3 This is a force analysis diagram showing the inner barrel shifting as illustrated in an embodiment of this application;

[0068] See Figure 1 , Figure 2 and Figure 3 .

[0069] The washing machine of this application embodiment includes the structural features of the above embodiment one, specifically including a shell, an outer tub and an inner tub 1. The washing machine also includes a balance interlayer 2 and at least one set of pressure sensors 3. The balance interlayer 2 is disposed on the outer periphery of the inner tub 1. The balance interlayer 2 is provided with a plurality of dispensing slots 21.

[0070] A set of pressure sensors 3 includes two pressure sensors 3 symmetrically distributed on the inner wall of the inner barrel 1.

[0071] The washing machine also includes M speed sensors 4. Each pressure sensor 3 has at least one speed sensor 4 on its radial plane. The projection of any point in the radial plane onto the line connecting the inner tub axis coincides with the projection on the same horizontal plane. The vertical plane containing the radial line of the inner tub cross-section is called the radial plane. Specifically, the radial plane containing the pressure sensor 3 refers to the radial plane containing the perpendicular line connecting the pressure sensor 3 and the inner tub axis (i.e., the inner tub radial line).

[0072] Furthermore, in this embodiment of the application, the speed sensor 4 is used to detect the angular velocity of the inner tub 1 and the balance layer 2 of the washing machine.

[0073] The washing machine includes M speed sensors 4. Each pressure sensor 3 has at least one speed sensor 4 on its radial plane. The projection of any point in the radial plane onto the line connecting the inner tub axis coincides with the horizontal plane. This structure ensures that at least one speed sensor 4 at the location of the pressure sensor 3 can measure its angular velocity, and multiple speed sensors 4 on the radial plane of the pressure sensor 3 can measure its angular velocity, and then the average angular velocity is taken.

[0074] This embodiment of the application uses a speed sensor 4 to measure the angular velocity at the location where the pressure sensor 3 is located. Using Newton's third law F = mωr², the weight can be calculated given the magnitude of the force, the angular velocity, and the radius r of the inner tub 1 at a given location. In this embodiment, the pressure is obtained from the symmetrically distributed pressure sensors 3, and the angular velocity at the corresponding location is measured by the speed sensor 4. The weight of the clothes at the corresponding location is then calculated using a formula. Based on the difference in the weight of the clothes, particles 6 are added to the location where the clothes are lighter, thereby balancing the clothes in the inner tub 1 and preventing the washing machine from bumping against the drum during the spin cycle, which would affect the lifespan of the washing machine.

[0075] Furthermore, in this embodiment, a pressure sensor 3 corresponding to the pressure sensor 3 on the inner wall of the inner tub 1 can be provided on the inner wall of the balancing interlayer 2. In this embodiment, "corresponding" refers to the pressure sensor 3 being located on the same radial plane as the pressure sensor 3 on the inner wall of the inner tub 1. By providing the pressure sensor 3 on the inner wall of the balancing interlayer 2 and reading its value, the balance state of the inner tub 1 and the balancing interlayer 2 can be determined.

[0076] The delivery slot 21 is set on the same radial plane as the pressure sensor 3. The delivery slot 21 is equipped with a bottom door 211 and a bottom switch. The bottom switch controls the opening and closing of the bottom door 211.

[0077] Furthermore, the washing machine also includes a particulate matter 6 recycling device 5, which is disposed below the balance interlayer 2 and is connected to the dispensing tank 21. For example, the particulate matter 6 is a ball bearing.

[0078] The delivery trough 21 is equipped with a trough top door and a trough top switch, and the trough top switch controls the opening and closing of the trough top door.

[0079] That is, after the dehydration process is completed, the bottom door 211 is opened by controlling the bottom switch of the tank, and the particles 6 in the feeding tank 21 can be recovered to the particle 6 recovery device 5, which is convenient for the next dehydration process.

[0080] The washing machine also includes L elastic balance bars 7, which are disposed on the outer wall or bottom surface of the balance interlayer 2.

[0081] In the embodiment of this application, the elastic balance bar 7 can promptly buffer and adjust the balance of the inner tub 1 in response to weight imbalance during the spin-drying process. For example, if the weight of the clothes in the inner tub 1 is unbalanced and the particles 6 are not properly placed, the elastic balance bar 7 can provide buffer protection for the washing machine to adjust the balance.

[0082] The beneficial effects of the embodiments of this application are as follows:

[0083] In this embodiment, the pressure received by two symmetrically distributed pressure sensors is obtained through the setting of pressure sensors, and the angular velocity at the corresponding position is measured by the speed sensor. Then, the weight of the clothes at the corresponding position is obtained by formula. Based on the difference in the weight of the clothes, particles are added to the position where the clothes are lighter, so that the inner drum of the washing machine is balanced and adjusted, thereby avoiding the washing machine from hitting the drum during the spin-drying process and affecting the service life of the washing machine.

[0084] The particulate matter recovery device is located below the balance jacket and is connected to the feeding tank. After the dewatering process is completed, the bottom door of the tank is opened by a bottom switch, allowing the particulate matter in the feeding tank to be recovered to the particulate matter recovery device for the next dewatering process.

[0085] During the dehydration process, the elastic balance bar can buffer and adjust the balance in a timely manner to address any imbalance in the weight of the inner drum.

[0086] Example 3

[0087] In addition to the washing machines mentioned in Embodiments 1 and 2 above, this application provides a corresponding control method for controlling the washing machines mentioned in Embodiments 1 and 2 above.

[0088] Figure 4 This is a schematic flowchart of a washing machine control method shown in an embodiment of this application;

[0089] See Figure 4 .

[0090] The control method in this application includes the following steps:

[0091] S101 starts the dehydration process;

[0092] This step involves the washing machine automatically starting the spin-drying program after it has completed washing and other programs.

[0093] S102 acquires the values ​​from two symmetrically distributed pressure sensors 3, obtaining F1 and F2. This step can acquire values ​​from multiple sets of symmetrically distributed pressure sensors 3, or from a single set. If multiple sets are used, multiple sets of F1 and F2 values ​​are obtained; if a single set is used, a single set of F1 and F2 values ​​is obtained. The sensors transmit the detected values ​​to the washing machine's control terminal.

[0094] S103 calculates the difference between F1 and F2 to obtain the difference ΔF; after receiving the numerical signal sent by the pressure sensor 3, the control terminal of the washing machine calculates the difference between F1 and F2 to obtain the difference ΔF.

[0095] S104 compares the difference ΔF with the preset value X, and the washing machine's control terminal controls whether to add particulate matter 6 into the feeding tank 21 in the balance interlayer 2 based on the comparison result.

[0096] Furthermore, the washing machine obtains a difference value ΔF. The control unit compares the difference value ΔF with a preset value X, and controls whether to add particulate matter 6 to the feeding tank 21 in the balance interlayer 2 based on the comparison result. This step has two possibilities: either particulate matter 6 is added to the feeding tank 21 in the balance interlayer 2 based on the comparison result, or no particulate matter 6 is added to the feeding tank 21 in the balance interlayer 2 based on the comparison result, and the washing machine continues to execute the spin-drying program. This step, by comparing the difference value ΔF with the preset value X and controlling whether to add particulate matter 6 to the feeding tank 21 in the balance interlayer 2 based on the comparison result, maintains the balance of the inner drum 1 during the spin-drying process, thereby preventing the washing machine from colliding with the drum during spin-drying and affecting its service life.

[0097] The beneficial effects of this application's embodiments are as follows: This application's embodiments obtain F1 and F2 by acquiring the values ​​of two relatively symmetrically distributed pressure sensors; calculate the difference between F1 and F2 to obtain the difference ΔF; compare the difference ΔF with a preset value X through the control terminal, and control whether to add particles to the feeding tank in the balance interlayer based on the comparison result, so as to maintain the balance of the inner drum during the washing machine's spin-drying process, thereby avoiding the washing machine from hitting the drum during spin-drying and affecting its service life. Compared with the prior art, which achieves a balancing effect by adding water to the lighter part of the clothes in the drum to increase their weight, resulting in a poor balancing effect due to the clothes having barely absorbed water before spin-drying, the washing machine control method of this application's embodiments is more effective in maintaining the balance of the washing machine.

[0098] Example 4

[0099] The above embodiment three describes a washing machine control method. The embodiments of this application will be further designed based on the above embodiment three so that the washing machine control method of this application can be better applied.

[0100] Figure 5 This is another schematic flowchart of the washing machine control method shown in the embodiments of this application;

[0101] See Figure 5 ,

[0102] The control method in this application includes the following steps:

[0103] S201 starts the dehydration process;

[0104] S202 obtains the values ​​of two pressure sensors 3 that are relatively symmetrically distributed, and obtains F1 and F2;

[0105] S203 calculates the difference between F1 and F2 to obtain the difference ΔF;

[0106] Furthermore, the values ​​of two relatively symmetrical pressure sensors 3 are obtained to obtain F1, F2, and the difference ΔF between F1 and F2. This step, in this embodiment of the application, is as follows:

[0107] Obtain the values ​​of two symmetrical pressure sensors 3 on the washing machine; obtain multiple sets of F1 and F2 values; calculate the difference between F1 and F2 to obtain multiple difference values ​​ΔF; and take the largest difference value ΔF. MAX Proceed to the next step.

[0108] By taking the maximum difference ΔF MAX Proceeding to the next step allows for a more effective and faster adjustment of the balance of the inner drum 1 of the washing machine.

[0109] S204 compares the difference ΔF with the preset value X and determines whether the difference ΔF is greater than or equal to the preset value X.

[0110] If the difference ΔF is less than the preset value X, the dehydration process continues; there is no need to add particulate matter 6 to the feeding tank 21 in the balance interlayer 2.

[0111] If the difference ΔF is greater than or equal to the preset value X, then particulate matter 6 is added to the delivery trough 21 in the balance interlayer 2.

[0112] If the difference ΔF is greater than or equal to the preset value X, then the particulate matter 6 is added to the delivery trough 21 in the balance interlayer 2, including:

[0113] S205 If the difference ΔF is greater than or equal to the preset value X, obtain the values ​​of the speed sensors 4 on the same radial plane as the pressure sensors 3 obtained in the previous steps, and obtain ω1 and ω2. For example, since each pressure sensor 3 includes at least one speed sensor 4 on the same radial plane, ω1 and ω2 can be the values ​​of a single speed sensor 4, or they can be the average value of the speed sensors 4 on the same radial plane of the pressure sensor 3.

[0114] r is the radius of the inner tub of the washing machine, which is a known value and can be obtained in advance. m1 and m2 are obtained according to the formula F=mωr2; m1 and m2 are the weight of clothes in the inner tub 1 at the pressure sensor 3 corresponding to F1 and F2. Particles 6 with a mass of Δm are put into the feeding tank 21 in the balance layer 2, where Δm is the difference between m1 and m2.

[0115] As mentioned in the above embodiment 2, the delivery slot 21 is located on the same radial plane as the pressure sensor 3. For example, in this embodiment, the number of delivery slots 21 is the same as that of the pressure sensor 3. Therefore, in this step, particles 6 with a mass of Δm are delivered into the delivery slot 21 in the balance interlayer 2. The delivery slot 21 is the delivery slot 21 corresponding to the smaller value of the pressure sensor 3 among F1 and F2.

[0116] r is the radius of the inner tub, a known standard value that can be pre-stored in the washing machine's control panel.

[0117] Furthermore, in this embodiment, multiple speed sensors 4 can be set to measure the angular velocity at the position of the pressure sensor 3, and the average value can be taken as the angular velocity reference value for further calculation and judgment. The average value of the angular velocity is more accurate than the angular velocity obtained by a single speed sensor 4.

[0118] Furthermore, in this embodiment, pressure sensors 3 can be installed at L elastic balance bars 7. The value of the pressure sensor 3 can be used to determine whether the inner tub 1 is in a balanced state. If the value of the pressure sensor 3 of all elastic balance bars 7 is zero, it means that none of the L elastic balance bars 7 have been deformed or subjected to pressure, indicating that the inner tub 1 of the washing machine is in a balanced state. When the value of a certain elastic balance bar 7 is not zero, it means that the inner tub 1 of the washing machine is in an unbalanced state, and a signal is sent to the washing machine control terminal to adjust the balance of the inner tub 1 of the washing machine.

[0119] The beneficial effects of the embodiments of this application are as follows: The washing machine control method of the embodiments of this application takes the maximum difference ΔF. MAX Proceeding to the next step allows for a more effective and faster adjustment of the balance of the washing machine's inner drum.

[0120] By setting up multiple velocity sensors to measure the angular velocity at the pressure sensor location, and taking the average value as the angular velocity reference value for further calculation and judgment, the average value of the angular velocity is more accurate than the angular velocity obtained by a single velocity sensor.

[0121] Based on the formula F=mωr2, m1 and m2 are obtained. Particles with a mass of Δm are added to the feeding trough in the balance interlayer. The feeding trough is the feeding trough of the pressure sensor with the smaller value among the pressure sensors F1 and F2. The washing machine control method of this application embodiment can accurately add particles with a precise mass to the feeding trough, thereby effectively and accurately adjusting the balance of the inner drum of the washing machine.

[0122] Example 5

[0123] The washing machine of this embodiment has a device for holding particles above the balance jacket 2. The device can be an annular pipe structure with a pipe opening on the bottom wall of the annular pipe structure. The pipe opening is connected to the balance jacket. When the pipe opening is opened, the particles in the device for holding particles enter the sliding channel of the balance jacket through the pipe opening. The sliding channel is the space from the opening of the loading slot to the top of the balance jacket. As the balance jacket rotates, the particles flow into the loading slot 21 through the opening of the top door. The particles 6 in the device for holding particles can fall into the loading slot 21.

[0124] The implementation method is as follows: after the washing machine starts the spin-drying program, the washing machine's control terminal obtains the values ​​of two symmetrical pressure sensors 3 on the washing machine; multiple sets of F1 and F2 are obtained; the difference between F1 and F2 is calculated to obtain multiple difference values ​​ΔF; and the largest difference value ΔF is taken. MAX Compare with the preset value X.

[0125] If the difference ΔF MAXIf the value is less than the preset value X, the dehydration process continues; there is no need to add particulate matter 6 to the feeding tank 21 in the balance interlayer 2.

[0126] If the difference ΔF MAX If the value is greater than or equal to the preset value X, obtain the maximum difference ΔF between the X and the value X obtained in the previous steps. MAX The values ​​of the pressure sensors 3 corresponding to F1 and F2 and the speed sensors 4 on the radial plane are used to obtain ω1 and ω2. According to the formula F=mωr2, m1 and m2 are obtained; r is the known radius of the inner tub 1, and m1 and m2 are the weights of the clothes in the inner tub 1 at the pressure sensors 3 corresponding to F1 and F2.

[0127] Based on the above calculation results, particles 6 with a mass of Δm need to be added to the feeding tank 21 in the balance interlayer 2, where Δm is the difference between m1 and m2.

[0128] At this time, the washing machine control terminal sends a particle 6 dispensing signal to the top switch and the control switch of the pipe opening. At this time, the pipe opening of the annular pipe opens, and the top switch controls the corresponding top door of the pipe to open. For example, the particles in the particle holding device enter the sliding channel of the balance jacket through the pipe opening, and flow into the dispensing tank 21 with the top door of the dispensing tank opened as the balance jacket rotates. For example, a quantity sensor is set at the pipe opening. The quantity sensor can detect the number of particles 6 falling into the balance jacket. Based on the size of Δm, the mass of each particle is known, so the mass of the particles that have been dispensed can be known from the number of particles dispensed. When the corresponding number of particles 6 has been dispensed is detected, the washing machine control terminal controls the pipe opening of the annular pipe to close. After all the particles above the balance jacket have fallen into the dispensing tank, the top switch controls the top door of the pipe to close, stopping the dispensing of particles 6 into the dispensing tank 21. The inner tub 1 of the washing machine reaches a balanced state and continues to complete the spin-drying program.

[0129] For example, the particulate matter 6 in this embodiment of the application is a ball bearing.

[0130] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A washing machine control method, characterized in that: Applied to a washing machine, the washing machine includes an inner tub, the washing machine also includes a balance jacket and at least one set of pressure sensors; The balancing interlayer is disposed on the outer periphery of the inner barrel; The balancing interlayer is provided with several dispensing slots; The set of pressure sensors includes two pressure sensors symmetrically distributed on the inner wall of the inner barrel; The washing machine control method includes the following steps: Start the dehydration process; Obtain the values ​​from two pressure sensors with relatively symmetrical distributions to obtain F1 and F2; Calculate the difference between F1 and F2 to obtain the difference ∆F; Compare the difference ∆F with the preset value X, and control whether to add particulate matter into the feeding trough in the balance interlayer based on the comparison result; The comparison of the difference ∆F with the preset value X, and the control of whether to add particulate matter into the feeding slot in the balance interlayer based on the comparison result, includes: If the difference ∆F is less than the preset value X, the dehydration process continues. If the difference ∆F is greater than or equal to the preset value X, then particulate matter is added to the feeding trough in the balance interlayer; If the difference ∆F is greater than or equal to the preset value X, then adding particulate matter to the delivery slot in the balance interlayer includes: If the difference ∆F is greater than or equal to the preset value X, obtain the values ​​of the speed sensors on the same radial plane as the pressure sensors F1 and F2 obtained in the previous steps to obtain ω1 and ω2. According to the formula F= mωr², obtain m1 and m2. Add particles with a mass of Δm to the feeding trough in the balance interlayer, where Δm is the difference between m1 and m2.

2. The washing machine control method according to claim 1, characterized in that: The values ​​of two symmetrical pressure sensors are obtained to obtain F1 and F2; The difference between F1 and F2 is calculated to obtain the difference ∆F, which includes: Obtain the values ​​of two symmetrical pressure sensors on the washing machine; obtain multiple sets of F1 and F2; calculate the difference between F1 and F2 to obtain multiple difference values ​​∆F; Take the maximum difference ∆F MAX Proceed to the next step.

3. The washing machine control method according to claim 1, characterized in that: The washing machine also includes M speed sensors, and each of the pressure sensors has at least one speed sensor on the same radial plane. The projection of any point in the same radial plane and the line connecting the inner tub shaft coincides on the same horizontal plane.

4. The washing machine control method according to claim 3, characterized in that: The delivery slot is located on the same radial plane as the pressure sensor. The delivery slot is equipped with a bottom door and a bottom switch, and the bottom switch controls the opening and closing of the bottom door.

5. The washing machine control method according to claim 1, characterized in that: The washing machine also includes a particulate matter recovery device, which is located below the balance jacket and is connected to the dispensing tank.

6. The washing machine control method according to claim 1, characterized in that: The delivery slot is equipped with a top door and a top switch, and the top switch controls the opening and closing of the top door.

7. The washing machine control method according to claim 1, characterized in that: The washing machine also includes L elastic balance bars, which are disposed on the outer wall or bottom surface of the balance interlayer.

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