A control method of a washing apparatus and a washing apparatus

Abstract

The application discloses a control method of a washing device and the washing device. The control method of the washing device comprises the following steps: the washing device is provided with a dehydration barrel, the dehydration barrel rotates at a certain rotating speed for dehydration, after detecting that the eccentric position of a load is in a preset interval, the rotating speed of the dehydration barrel is accelerated, and according to the vibration value of the dehydration barrel, the rotating speed of the dehydration barrel after acceleration is adjusted to the end of dehydration; the rotating speed of the dehydration barrel after acceleration is adjusted through the vibration value of the dehydration barrel, the rotating speed of the dehydration barrel is accurately adjusted in the dehydration process, the vibration of the dehydration barrel is kept at the optimal vibration, and thus the vibration or noise of the washing device during operation is reduced. The application also provides a washing device, and the washing device is provided with a dehydration barrel, and the dehydration barrel is provided with an eccentric detection device and a vibration detection device.

Description

Technical Field

[0001] This invention belongs to the field of household appliance technology, specifically, it relates to a control method for a washing device and the washing device itself. Background Technology

[0002] During the spin-drying process, different laundry items inside the washing machine have different materials and absorbency, which can easily lead to uneven distribution of the laundry. Uneven distribution of laundry can cause the spin-drying drum's rotation axis to deviate from the center of the drum. This off-center spin-drying can cause the outer drum to hit the outer casing or control lever, producing vibration or noise. In severe cases, the off-center spin-drying can even cause the washing machine to move, jump, or be damaged.

[0003] Therefore, detecting the vibration level of the spin-drying drum during the spin-drying process is crucial. However, existing washing machine spin-drying control methods cannot accurately detect the vibration level of the spin-drying drum, resulting in an inability to accurately adjust the drum's rotation speed during spin-drying. This prevents the drum from maintaining optimal vibration, often leading to significant vibration or noise in the washing machine. This greatly restricts the smooth spin-drying process and hinders the development of the washing machine industry.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a control method and washing equipment for washing equipment. By adjusting the speed of the spin-drying drum after speeding up by the vibration value of the spin-drying drum, the speed of the spin-drying drum can be accurately adjusted during the spin-drying process, so that the vibration of the spin-drying drum is kept at the optimal vibration, thereby reducing the vibration or noise of the washing equipment during operation.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0007] This invention provides a control method for a washing device. The washing device has a spin-drying tub, which rotates at a certain speed to spin-dry. After detecting that the eccentric position of the load is within a preset range, the rotation speed of the spin-drying tub is increased. Based on the vibration value of the spin-drying tub, the increased rotation speed of the spin-drying tub is adjusted until the spin-drying is completed.

[0008] Furthermore, the dehydration drum rotates at a first speed for dehydration. After the eccentric position of the load is within a preset range, the speed of the dehydration drum is increased from the first speed to the second speed. The dehydration drum rotates at the second speed for dehydration. The vibration value of the dehydration drum is compared with the preset vibration value. If the vibration value is less than or equal to the preset vibration value, the speed of the dehydration drum is adjusted.

[0009] Furthermore, if the vibration value of the dehydration drum is less than or equal to the preset vibration value, the rotation speed of the dehydration drum is increased from the second rotation speed to the third rotation speed; if the vibration value of the dehydration drum is greater than the preset vibration value, the dehydration drum continues to rotate at the second rotation speed for dehydration.

[0010] Furthermore, the vibration value of the dehydration drum includes the axial vibration value and the radial vibration value of the dehydration drum. Both the axial vibration value and the radial vibration value are compared with the preset vibration value. If both the axial vibration value and the radial vibration value are less than or equal to the preset vibration value, the rotation speed of the dehydration drum is increased from the second rotation speed to the third rotation speed.

[0011] Furthermore, if either the axial vibration or the radial vibration value is less than or equal to the preset vibration value, the dehydration tank will rotate at a fourth rotation speed, which is greater than the second rotation speed and less than the third rotation speed.

[0012] Furthermore, if both the axial vibration value and the radial vibration value are greater than the preset vibration value, the dehydration tank will continue to rotate at the second rotation speed for dehydration.

[0013] Furthermore, the spin-drying drum rotates at the first speed to spin-dry. If the eccentric position of the load is detected to be outside the preset range, the spin-drying drum is controlled to continue rotating at the first speed, and water is introduced into the spin-drying drum through the water inlet of the washing equipment to bring the eccentric position of the load within the preset range.

[0014] If the load's eccentric position is detected to be within the preset range, the rotation speed of the dehydration tank will be directly increased from the first rotation speed to the second rotation speed.

[0015] Furthermore, the dehydration drum is controlled to rotate at a first speed, so that the eccentric position of the load is rotated to below the water inlet. Then, the dehydration drum is controlled to stop rotating, and the water inlet introduces water into the dehydration drum in an amount equal to the eccentric position of the load. After the water inlet stops introducing water, the dehydration drum is controlled to rotate again at the first speed, and the eccentric position of the load is checked to see if it is within the preset range.

[0016] Furthermore, during the process of adjusting the eccentric position of the load, the maximum number of times the dehydration tank can detect eccentricity in one dehydration cycle is set to m. When the number of detections reaches m and the eccentric position of the load is still not within the preset range, the water in the dehydration tank is directly discharged, and the dehydration tank is controlled to rotate at the first speed until the dehydration ends.

[0017] The present invention also provides a washing device having a spin-drying drum, and the control method of the washing device provided by the above technical solution includes an eccentricity detection device and a vibration detection device on the spin-drying drum.

[0018] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0019] By adjusting the vibration value of the spin-drying drum, the rotation speed of the spin-drying drum after speed increase is adjusted, so that the rotation speed of the spin-drying drum can be accurately adjusted during the spin-drying process, and the vibration of the spin-drying drum is kept at the optimal vibration, thereby reducing the vibration or noise of the washing equipment during operation.

[0020] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0022] Figure 1 This is a flowchart of a control method for a washing device provided in an embodiment of the present invention.

[0023] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] like Figure 1As shown, in an embodiment of the present invention, the washing equipment has a spin-drying tub, which rotates at a certain speed to spin-dry. After detecting that the eccentric position of the load is within a preset range, the speed of the spin-drying tub is increased, and the speed of the increased spin-drying tub is adjusted according to the vibration value of the spin-drying tub until the spin-drying is completed.

[0028] In embodiments of the present invention, the rotation speed of the dehydration drum after speed-up is adjusted by the vibration value of the dehydration drum, so as to accurately adjust the rotation speed of the dehydration drum during the dehydration process, so that the vibration of the dehydration drum is kept at the optimal vibration, thereby reducing the vibration or noise of the washing equipment during operation.

[0029] The washing equipment is a washing machine, which includes a casing, an outer tub, and an inner tub inside the casing. The inner tub is rotatably located inside the outer tub and serves as the spin-drying tub. Responding to a spin-drying command, the inner tub rotates to spin-dry the clothes, and during this rotation, the eccentric position of the load is determined. The spin-drying command can be issued by the user pressing a designated spin-drying button or automatically triggered during a series of clothing cleaning cycles. After the washing machine's controller issues a spin-drying command, the washing machine controls the motor drive to rotate the spin-drying tub for spin-drying. Throughout the entire spin-drying process, the washing machine maintains the same uniform acceleration.

[0030] The spin-drying drum is equipped with an eccentricity detection device and a vibration detection device. The eccentricity detection device detects the eccentric position of the load, and the vibration detection device detects the vibration value of the spin-drying drum. Furthermore, the vibration detection device detects the axial and radial vibration values ​​of the spin-drying drum. The washing machine has a control system connected to the eccentricity detection device and the vibration detection device. The eccentricity detection device transmits the detected load eccentricity position to the control system, which compares the load eccentricity position with a preset range. The vibration detection device transmits the detected spin-drying drum vibration value to the control system, which compares the spin-drying drum vibration value with a preset vibration value. This, in turn, controls the motor to operate and adjusts the spin-drying drum's rotation speed.

[0031] When the spin cycle ends, the washing machine motor stops rotating, gradually slowing down and maintaining an empty spin cycle for a certain period before naturally stopping. After a preset time has elapsed since the spin cycle ended, a reminder is issued to alert the user that the spin cycle is complete and that clothes can be removed from the washing machine. This prevents users from leaving clothes in the washing machine unaware that the spin cycle has finished. Specifically, a buzzer sounds six times, but the number of beeps is not limited to six; it can also be two or three times. Furthermore, it is not limited to buzzers; it can also include alarms and voice prompts.

[0032] like Figure 1As shown, in an embodiment of the present invention, the dehydration drum rotates at a first speed for dehydration. After the eccentric position of the load is within a preset range, the speed of the dehydration drum is increased from the first speed to a second speed. The dehydration drum rotates at the second speed for dehydration. The vibration value of the dehydration drum is compared with a preset vibration value. If the vibration value is less than or equal to the preset vibration value, the speed of the dehydration drum is adjusted.

[0033] In an embodiment of the present invention, after the washing machine enters the spin-drying program, a preset speed is first given, which is the first speed, and the spin-drying tub of the washing machine is controlled to rotate at the first speed.

[0034] The steps for obtaining the vibration value of the spin-drying tub specifically include: obtaining the maximum vibration value of the spin-drying tub per revolution measured by the vibration detection device of the washing machine within a preset time period, and taking the average value of the maximum vibration value of the spin-drying tub per revolution as the vibration value.

[0035] The maximum vibration value per revolution of the washing machine is measured by a vibration detection device, and the average vibration value is calculated. The rotation of the spin-drying tub is then controlled based on the relationship between the average vibration value and the preset vibration value. Selecting the average value can avoid the judgment result of the magnitude between the vibration value and the preset vibration value due to measurement error, thus affecting the normal operation of the washing machine.

[0036] Different loads will produce different eccentricities, and under high-speed dehydration, different eccentricities will cause different vibrations in the whole machine;

[0037] During the dehydration process, the dehydration speed of the dehydration drum is controlled to accelerate to a second speed, which is a preset speed greater than the first speed. The drum rotates at the second speed for a certain preset time, and the vibration value of the dehydration drum is obtained.

[0038] In this technical solution, the spin speed is controlled to accelerate to a first speed and rotated at the first speed for a certain preset time. Since the total weight of the clothes to be washed and the water is relatively large in the initial spin-drying stage, a large eccentricity and vibration will be generated under high-speed spin-drying. Therefore, by reasonably setting the spin speed and spin-drying time in the initial stage, the vibration generated by the whole machine during operation can be kept within a safe range while ensuring the spin-drying effect, so as to avoid the situation where excessive vibration occurs due to the use of a large spin-drying speed, thus preventing vibration failure.

[0039] The dehydration process consists of two stages. The first stage involves accelerating the dehydration speed to a predetermined level and maintaining that speed for a set time. The second stage determines whether to adjust the dehydration speed based on a comparison between the detected vibration value and a preset vibration value. By controlling the dehydration speed in stages, the dehydration speed acceleration curve is specifically modified, thereby reducing overall machine vibration while ensuring effective dehydration.

[0040] Extend the spin-drying time at the first speed as much as possible to reduce the moisture content of the clothes and ensure the spin-drying effect when the load is small.

[0041] The automatic control of the dehydration speed is achieved by comparing the detected vibration value of the dehydration drum with the preset vibration value, so as to achieve the best dehydration and balance effect under different load conditions. In other words, while ensuring that the vibration value generated during the dehydration operation of the whole machine is within a safe range, the dehydration speed is maximized, thereby improving the dehydration effect, reducing the operating noise of the product and the noise interference to users and surrounding residents, reducing the probability of vibration failure, and improving the product's performance and market competitiveness.

[0042] The outer tub is secured to the washing machine's outer casing using shock-absorbing and elastic connectors. The shock-absorbing connectors provide support to the outer tub and mitigate its vibrations through mechanical damping, thereby reducing the vibrations transmitted from the outer tub to the outer casing. The elastic connectors, which can be suspension springs, similarly serve the functions of shock absorption and fixation. Multiple shock-absorbing and elastic connectors can be used to provide multi-point support to the outer tub and reduce the vibrations transmitted to the outer casing.

[0043] like Figure 1 As shown in the embodiment of the present invention, if the vibration value of the dehydration barrel is less than or equal to the preset vibration value, the rotation speed of the dehydration barrel is increased from the second rotation speed to the third rotation speed; if the vibration value of the dehydration barrel is greater than the preset vibration value, the dehydration barrel continues to rotate at the second rotation speed for dehydration.

[0044] In an embodiment of the present invention, when the determined vibration is a first vibration value, the corresponding target rotation speed is a first rotation speed; when the determined vibration is a second vibration value, the corresponding target rotation speed is a second rotation speed. When the vibration is large, a lower rotation speed is set to prevent excessive noise or even safety accidents caused by excessive vibration of the outer tub.

[0045] Furthermore, the vibration value of the dehydration drum includes the axial vibration value and the radial vibration value of the dehydration drum. Both the axial vibration value and the radial vibration value are compared with the preset vibration value. If both the axial vibration value and the radial vibration value are less than or equal to the preset vibration value, the rotation speed of the dehydration drum is increased from the second rotation speed to the third rotation speed.

[0046] If either the axial vibration or the radial vibration value is less than or equal to the preset vibration value, the dehydration tank will rotate at a fourth speed for dehydration. The fourth speed is greater than the second speed but less than the third speed.

[0047] If both the axial vibration value and the radial vibration value are greater than the preset vibration value, the dehydration tank will continue to rotate at the second speed for dehydration.

[0048] like Figure 1As shown, in an embodiment of the present invention, the spin-drying tub rotates at a first speed to spin-dry. If the eccentric position of the load is detected to be outside the preset range, the spin-drying tub is controlled to continue rotating at the first speed, and water is introduced into the spin-drying tub through the water inlet of the washing equipment to make the eccentric position of the load within the preset range.

[0049] If the load's eccentric position is detected to be within the preset range, the rotation speed of the dehydration tank will be directly increased from the first rotation speed to the second rotation speed.

[0050] In embodiments of the present invention, the rotational speed of the spin-drying tub is accurately adjusted by detecting the eccentric position of the load, thereby reducing vibration or noise during operation of the washing equipment.

[0051] It's easy to understand that when the load of clothes in the inner drum is not evenly distributed along the drum wall, the centrifugal force around the drum will be inconsistent. When the load inside the drum is large and the eccentricity is significant, the large centrifugal force will cause the drum to vibrate violently, generating significant noise. Typically, the magnitude of the eccentricity is directly proportional to the noise level during spin-drying. Therefore, spin-drying can be controlled based on parameters such as the eccentricity, with the goal of reducing spin-drying noise.

[0052] The preset range can be determined based on the load weight, with one weight range corresponding to one preset range.

[0053] When the load's eccentric position is within the corresponding preset range, it indicates that the clothes are not eccentric or have a small eccentricity, and the spin-drying drum speed can be increased to the second speed. If the load's eccentric position is detected to be outside the preset range, it indicates that the clothes have a large eccentricity, and certain measures need to be taken to adjust the load's eccentricity so that the eccentricity is eliminated, thereby preventing the clothes from clumping together and failing to spin-dry.

[0054] The preset vibration value was obtained through extensive testing and statistical data processing on different types of loads.

[0055] To address potential issues such as excessive clothing eccentricity or significant tangling, this application employs an emergency response method during the eccentricity detection phase: when the eccentricity far exceeds the maximum value of the preset range, the eccentricity detection is immediately stopped.

[0056] The measure to adjust the load eccentricity is to control the dehydration drum to rotate at a first speed, so that the load eccentricity position rotates to below the water inlet, then control the dehydration drum to stop rotating, and the water inlet to introduce water into the dehydration drum in an amount equal to the load eccentricity. After the water inlet stops introducing water, control the dehydration drum to rotate again at the first speed, and check whether the load eccentricity position is within the preset range.

[0057] The load's eccentric position is controlled below the water inlet, allowing water to enter the stopped spin-drying drum accurately at the eccentric position. The amount of water entering the drum only needs to eliminate the eccentricity; that is, the amount of water entering the spin-drying drum from the inlet is equal to the load's eccentricity. By entering water into the drum, the load is evenly distributed within the spin-drying drum, eliminating the load's eccentricity. After water entry is complete, the load eccentricity is detected again to determine whether the load's eccentric position is within the preset range, ensuring that the spin-drying drum can be accelerated.

[0058] In an embodiment of the present invention, during the process of adjusting the eccentric position of the load, the maximum number of times the dehydration tank can detect eccentricity in one dehydration cycle is set to m. When the number of detections reaches m and the eccentric position of the load is still not within the preset range, the water in the dehydration tank is directly discharged, and the dehydration tank is controlled to rotate at the first speed until the dehydration ends.

[0059] In embodiments of the present invention, when addressing the problem of severe uneven distribution, considering the overall running time of the washing program, the maximum number of eccentricity detections in a single washing cycle can be set to m. When the number of detections reaches m and the eccentricity value is still greater than the severe eccentricity value, the wash water is directly drained, and then the spin-drying drum is controlled to run at speed b until the washing program ends. In other words, when the number of detections reaches its extreme value, a control method of forcibly draining the wash water and low-speed spin-drying can be selected to avoid high-speed resonance points and, ideally, to avoid low-speed resonance points and complete the washing control program as quickly as possible.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A control method for a washing machine, the washing machine having a spin-drying tub, characterized in that, The dehydration drum rotates at a certain speed to dehydrate. After detecting that the eccentric position of the load is within the preset range, the speed of the dehydration drum is increased. Based on the vibration value of the dehydration drum, the speed of the dehydration drum after the speed increase is adjusted until the dehydration is completed. The dehydration drum rotates at the first speed for dehydration. If the load's eccentric position is detected to be outside the preset range, the dehydration drum is controlled to continue rotating at the first speed until the load's eccentric position is below the water inlet. Then, the dehydration drum stops rotating, and the water inlet introduces water into the dehydration drum in an amount equal to the load's eccentric position. After the water inlet stops introducing water, the dehydration drum is controlled to rotate at the first speed again, and the load's eccentric position is checked to see if it is within the preset range. After the load's eccentric position is within the preset range, the rotation speed of the dehydration drum is increased from the first rotation speed to the second rotation speed. The dehydration drum rotates at the second rotation speed to dehydrate. The vibration value of the dehydration drum is compared with the preset vibration value. If the vibration value is less than or equal to the preset vibration value, the rotation speed of the dehydration drum is adjusted. The steps for obtaining the vibration value of the spin-drying tub specifically include: obtaining the maximum vibration value of the spin-drying tub per revolution measured by the vibration detection device of the washing machine within a preset time period, and taking the average value of the maximum vibration value of the spin-drying tub per revolution as the vibration value.

2. The control method for the washing equipment according to claim 1, characterized in that, If the vibration value of the dehydration drum is less than or equal to the preset vibration value, the rotation speed of the dehydration drum will be increased from the second rotation speed to the third rotation speed. If the vibration value of the dehydration drum is greater than the preset vibration value, the dehydration drum will continue to rotate at the second rotation speed for dehydration.

3. The control method for the washing equipment according to claim 2, characterized in that, The vibration value of the dehydration drum includes the axial vibration value and the radial vibration value. Both the axial vibration value and the radial vibration value are compared with the preset vibration value. If both the axial vibration value and the radial vibration value are less than or equal to the preset vibration value, the rotation speed of the dehydration drum is increased from the second rotation speed to the third rotation speed.

4. The control method for the washing equipment according to claim 3, characterized in that, If either the axial vibration or the radial vibration value is less than or equal to the preset vibration value, the dehydration tank will rotate at a fourth speed for dehydration. The fourth speed is greater than the second speed but less than the third speed.

5. The control method for the washing equipment according to claim 4, characterized in that, If both the axial vibration value and the radial vibration value are greater than the preset vibration value, the dehydration tank will continue to rotate at the second speed for dehydration.

6. The control method for the washing equipment according to any one of claims 1-5, characterized in that, During the process of adjusting the eccentric position of the load, the maximum number of times the dehydration drum can detect eccentricity in one dehydration cycle is set to m. When the number of detections reaches m and the eccentric position of the load is still not within the preset range, the water in the dehydration drum is directly discharged, and the dehydration drum is controlled to rotate at the first speed until the dehydration ends.

7. A washing apparatus, comprising a spin-drying tub, characterized in that, The control method of the washing equipment according to any one of claims 1-6 is provided with an eccentricity detection device and a vibration detection device on the spin-drying drum.

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