CN118273043A

CN118273043A - Washing machine and eccentric detection control method thereof

Info

Publication number: CN118273043A
Application number: CN202211710630.9A
Authority: CN
Inventors: 王京; 刘尊安; 姜同春; 安昌喜; 刘庆
Original assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Filing date: 2022-12-29
Publication date: 2024-07-02

Abstract

The invention discloses a washing machine and an eccentric detection control method thereof, wherein the height of a barrel pasting load in an inner barrel is obtained before a dehydration process is started, the maximum value of the barrel pasting load height and the minimum value of the barrel pasting load height are obtained, the height difference of the maximum value and the minimum value is obtained through calculation, the height difference is compared with a preset threshold value, when the height difference is larger than the preset threshold value, the uneven load distribution is judged, whether water exists in the inner barrel is detected, the load is directly redistributed when water exists, if water does not exist, the load is redistributed after water is added into the inner barrel, water is continuously discharged after the distribution is completed, the height of the barrel pasting load is obtained until the height difference is smaller than the preset threshold value, and the dehydration process is entered; according to the scheme, the load can be ensured to be in a uniformly distributed state before the dehydration process starts, so that the success rate of dehydration starting is greatly improved, and the water resource waste caused by repeated water inlet distribution load due to dehydration starting failure is avoided.

Description

Washing machine and eccentric detection control method thereof

Technical Field

The invention belongs to the technical field of washing machines, and particularly relates to a washing machine and an eccentric detection control method thereof.

Background

As a common household appliance, the washing machine is popular with users because it can replace users to finish washing clothes, and is becoming an indispensable conventional appliance for various households with the development of technology and the improvement of the personal living standard, so that users have put forward higher demands on the use experience of the washing machine.

At present, when the eccentricity is detected in the dehydration process of the washing machine, the dehydration is stopped to redistribute the load, so that the dehydration time is greatly prolonged, and water needs to be re-fed in the process of distributing the load, so that a great amount of water resources are wasted.

To solve this problem, chinese patent application CN202010211310.3 discloses a drainage control method for a washing machine, which includes controlling the rotation of a tub during the drainage process. The invention provides a drainage control method, which is mainly an antiwind control method for adding a drainage process on the basis of a control time sequence before dehydration, and specifically comprises the following steps: in the drainage process, the rotation direction and the rotation speed of the washing barrel are controlled, so that the load in water can be distributed towards the edge of the inner barrel under the action of centrifugal force, the load winding in the washing or rinsing process can be effectively reduced, and the eccentricity of the washing barrel caused by the load winding after drainage is reduced; however, the above solution cannot accurately know how much the load is wound, and further cannot know whether the dehydration can be started smoothly, and there is still a risk of failure in starting the dehydration.

The invention of China patent with the application number of CN2010941238.X discloses a washing machine and a control method, wherein the washing machine comprises a water containing barrel, the water containing barrel is arranged in a shell of the washing machine through a damping device, a cam which can rotate around a rotating shaft and is positioned outside the water containing barrel is arranged on the shell, and the distance between part of the cam and the rotating shaft is larger than the interval between the rotating shaft and the water containing barrel, so that the cam can drive the water containing barrel to shake and displace; the telescopic driving of the cam drives the water containing barrel to displace so as to shake the load, but the scheme still cannot know the specific distribution condition of the load, and further cannot know whether the dewatering can be started successfully.

The present invention has been made in view of this.

Disclosure of Invention

The invention aims to provide a control method for detecting eccentricity of a washing machine, which aims at the problems in the prior art, the height of a barrel pasting load in an inner barrel is obtained before dehydration starts, and when the height of the barrel pasting load is judged to be uneven in load distribution, the load is redistributed in advance, so that the load is dehydrated in a uniformly distributed state, and the success rate of dehydration starting is improved.

Another object of the present invention is to provide a washing machine, in which the eccentricity detection control method in the above scheme is adopted, so that the load distribution state can be confirmed before the start of dehydration and the redistribution can be performed in time when the uneven load distribution is determined, thereby avoiding the occurrence of noise caused by barrel collision due to the failure of the dehydration start, avoiding the need of redistributing the load by re-feeding water after the failure of the dehydration start, shortening the dehydration time, and improving the water saving effect of the washing machine.

In order to achieve the above object, a first aspect of the present invention provides a laundry machine eccentricity detection control method, comprising the steps of;

S1, before starting a dehydration process, acquiring the height of a barrel-attached load in an inner barrel;

s2, adjusting the load distribution state when the load is judged to be uneven according to the height of the barrel-attached load.

Further, the highest position of the bonding height of the load and the inner barrel is defined as the maximum value of the bonding height of the barrel, and the lowest position of the bonding height of the load and the inner barrel is defined as the minimum value of the bonding height of the barrel;

in the step S1, the height difference of the minimum value of the sum of the maximum values of the barrel attaching load heights in the inner barrel is obtained; in step S2, whether the load is uniform or not is judged according to the height difference.

The success or failure of dehydration starting is directly related to the distribution state after the end of load drainage, and the load is generally distributed by attaching barrels after the end of washing, so that the distribution of the heights of the attaching barrels can reflect the distribution situation of the load to a great extent, the uneven load distribution can be illustrated when the height difference of the attaching barrels is large, and the relatively even load distribution can be judged when the height difference is small; according to the scheme, the height of the barrel pasting load in the inner barrel is obtained before the dehydration process is started, the height difference between the maximum value and the minimum value of the barrel pasting load height is calculated, and then the load distribution is adjusted when the load distribution is judged to be uneven according to the height difference, so that the load is ensured to be in a relatively uniform distribution state when entering the dehydration process, and the probability of successful dehydration starting is further improved.

Specifically, in step S2, the height difference is compared with a preset threshold, and the load is determined to be uneven when the height difference is greater than the preset threshold.

Further, the height difference is obtained in the drainage process, after the uneven load is judged according to the height difference, whether water exists in the inner barrel is judged, and a corresponding program is executed according to a judgment result; specifically, if no water exists in the inner barrel, water is fed into the inner barrel to the minimum value of the load height, and then the load distribution state is adjusted; otherwise, directly adjusting the load distribution state; and (5) returning to the step (S1) after adjusting the distribution state of the load.

Because the height of the load attached to the barrel is obtained in the drainage process, in the scheme, when the load distribution is judged to be uneven according to the height difference, whether residual water exists in the inner barrel is continuously detected, if the residual water exists, the residual water can be directly utilized to realize the redistribution of the load, the additional water is not required to be added into the inner barrel, and the waste of water resources is avoided; if there is no surplus water or it is judged that the surplus water is insufficient to redistribute the load, the water is fed into the inner tub to the minimum value of the load height, and then the load is redistributed.

Further, the height of the barrel attaching load at the fixed position is obtained;

And obtaining the maximum value and the minimum value of the barrel attaching load height in the rotation process of the inner barrel.

In the scheme, the position of the height of the attached barrel load is fixed, and then the attached barrel height of the load distributed along the axial direction of the inner barrel can be known directly through the rotation of the inner barrel.

Further, the height of the barrel attaching load at the fixed position is obtained through the detection unit;

And respectively forming two right-angle triangles taking the peripheral wall of the inner barrel as a right-angle side by taking a connecting line of the position of the detection unit and the minimum value and the maximum value of the barrel-attaching load height as oblique sides, and calculating to obtain the height difference by Pythagorean theorem.

In the scheme, the right triangle with the peripheral wall of the inner barrel being the right-angle edge is respectively formed according to the connection line of the minimum value and the maximum value of the position of the detection unit and the height of the attached barrel load as the oblique edge, and the length of the right-angle edge corresponding to the peripheral wall of the inner barrel is respectively calculated according to the Pythagorean theorem as the distance between the detection unit and the wall of the inner barrel is unchanged, so that the height difference of the attached barrel load can be accurately known, the height difference obtained by adopting the scheme is more real and reliable, and the possibility of misjudgment is lower.

A second aspect of the present invention provides a washing machine employing the above-described eccentricity detection control method, as follows.

In particular, the washing machine includes,

The inner barrel is rotatably arranged in the washing machine;

The detection unit is arranged independently of the inner barrel and is used for acquiring the height of the barrel attaching load at the fixed position in the inner barrel;

and the control unit is in communication connection with the detection unit and is used for receiving the height of the barrel-sticking load acquired by the detection unit and adjusting the load distribution state when judging that the load distribution is uneven according to the change condition of the load height.

In the scheme, the detection unit and the inner barrel are mutually independent, namely, the rotation of the inner barrel cannot influence the detection unit, and the accuracy of the detection result of the detection unit is further guaranteed.

Further, the washing machine further comprises a control panel seat, and the detection unit is arranged on the inner side of the control panel seat and towards the inner part of the inner barrel;

the fixed position is the inner barrel wall passing through the other side opposite to the detection unit in the inner barrel section of the inner barrel shaft.

In the scheme, the fixed position and the detection unit are positioned in the same plane passing through the inner barrel shaft, the detection unit can more accurately obtain the height of the barrel load, meanwhile, the difficulty of obtaining the height difference is reduced, the calculation process of obtaining the height difference is simplified, and the accuracy of the detection result is further improved.

The beneficial effects of the invention are as follows:

1. Judging whether the load is uniform or not by the height of the barrel-attached load before the dehydration process starts, and redistributing the load in time when judging non-uniformity, thereby effectively improving the success rate of dehydration starting, avoiding the water injection redistributing process after the dehydration starting failure, shortening the dehydration time length and saving water resources.

2. The detection unit obtains the barrel attaching load height of fixed position department, obtains the position of barrel attaching load height promptly and does not change along with interior barrel rotation, can obtain the barrel attaching load's of interior barrel circumference each direction height in interior barrel rotation process, and then more accurate obtaining the difference in height of barrel attaching load, accurately judges the distribution condition of load according to the difference in height.

3. Forming two right triangles with the peripheral wall of the inner barrel as right-angle edges by taking a connecting line of the position of the detection unit and the minimum value and the maximum value of the barrel-attaching load height as oblique edges, and calculating to obtain a height difference by Pythagorean theorem; the detection unit is independent of the inner barrel, so that the detection unit has a more free setting position, the relative position relation between the detection unit and the barrel pasting load can be adjusted according to actual demands, the more real barrel pasting height of the load can be obtained, the height difference obtained by respectively calculating the maximum value and the minimum value of the barrel pasting load through the Pythagorean theorem can truly and accurately reflect the actual state of the load, the possibility of misjudgment is obviously reduced, and the use experience of a user is improved.

4. Because the height difference is obtained in the drainage process, after the uneven load is judged, different distribution programs are executed according to whether residual water exists in the inner barrel, the water is directly redistributed when the residual water exists, and the water is added for redistribution when the water does not exist, so that the water resource saving is further realized.

Drawings

Fig. 1 is a sectional view of a washing machine according to the present invention.

Fig. 2 is a simplified schematic diagram of a method for obtaining a tub-sticking load height in a washing machine according to the present invention.

Fig. 3 is a simple flowchart of the eccentricity detection control method of the washing machine according to the present invention.

Fig. 4 is a relatively complete flowchart of the eccentricity detection control method of the washing machine according to the present invention.

Fig. 5 is a more complete flowchart of the eccentricity detection control method of the washing machine according to the present invention.

In the figure: 1. a washing machine; 11. an inner barrel; 12. a control panel seat; 2. and a detection unit.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, and it will be understood by those skilled in the art that the following embodiments are only for explaining the technical principles of the present invention and are not intended to limit the scope of the present invention.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly or indirectly through an intermediate medium, and the specific meaning of the above terms in the present utility model will be understood by those skilled in the art according to the specific circumstances.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The invention provides a control method for detecting eccentricity of a washing machine, which is shown in figures 1 to 5 and comprises the following steps of;

According to the scheme, whether the load is uniform or not is judged through the height of the barrel-attached load before the dehydration process starts, and the load is redistributed timely when the load is judged to be non-uniform, so that the success rate of dehydration starting is effectively improved, the water injection redistribution process after the dehydration starting failure is avoided, the dehydration time is shortened, and the water resource is saved.

The following is a further detailed description of specific embodiments.

Example 1

As an embodiment of the present invention, the present embodiment provides a laundry machine eccentricity detection control method, which obtains a height of a tub-sticking load in an inner tub in a drainage process before a dehydration process.

In this embodiment, the height of the bucket attaching load in the inner bucket is obtained after the drainage process starts, the height of the bucket attaching load refers to the height of the attaching surface of the inner bucket and the load distributed along the circumferential direction of the inner bucket, and whether the load is uniformly distributed is judged according to the height of the bucket attaching load.

It can be understood that the success or failure of the dewatering start is directly related to the distribution state after the end of the dewatering, the load is influenced by the centrifugal force and distributed close to the inner tub wall in the washing process, the height of one side of the load attached to the tub is usually lower than the height of one side away from the inner tub wall under the influence of the tension of the washing water and the centrifugal force, therefore, the distribution of the attached tub height can reflect the distribution condition of the load to a great extent, the uneven load distribution can be illustrated when the height difference of the load attached to the tub is larger, the relatively even load distribution can be judged when the height difference is smaller, and then whether the load is evenly distributed can be accurately known according to the height difference, and the load is redistributed when the load is uneven, so that the dewatering start failure caused by uneven load distribution in the dewatering process is avoided.

Specifically, as shown in fig. 3 and fig. 4, the height of the attached barrel load is obtained in the rotation process of the inner barrel, the highest position of the attached height of the load and the inner barrel is defined as the maximum value of the attached barrel load, the lowest position of the attached height of the load and the inner barrel is defined as the minimum value of the attached barrel load, the difference between the maximum value and the minimum value is calculated to obtain a height difference, the height difference is compared with a preset threshold value, if the height difference is smaller than the preset threshold value, the load distribution is judged to be uniform, and the dehydration process can be continued; if the height difference is larger than a preset threshold value, judging that the load distribution is uneven, and if the dehydration progress is entered, the dehydration start has a high probability of failure, and the load needs to be redistributed.

Further, as shown in fig. 5, after judging that the load distribution is not uniform, detecting whether water exists in the inner barrel, and executing a corresponding program according to the detection result; specifically, if no water is detected in the inner barrel, then water is added into the inner barrel, and then the load is redistributed; if it is detected that there is still water in the inner tub, the load is directly redistributed.

Further, when detecting that residual water still exists in the inner barrel, judging whether the residual water quantity reaches the minimum value of the attached barrel load height, if not, supplementing water into the inner barrel until the water level reaches the minimum value of the attached barrel load height, so as to ensure the smooth proceeding of load distribution; and if no water is detected in the inner barrel, directly feeding water to the water level in the inner barrel to reach the minimum value of the barrel-attaching load height.

Further, after the distribution is completed, the water is continuously drained, and the step S1 is returned until the height difference is smaller than a preset threshold value, and the dehydration process is started.

According to the scheme, whether the load is uniformly distributed or not can be judged through the height of the barrel-attached load before dehydration starts, and then the load is redistributed when the uneven distribution is judged, so that the success rate of dehydration starting is improved, and the use experience of a user is improved.

Example two

As another embodiment of the present invention, the present embodiment is further modified as follows on the basis of the first embodiment.

In this embodiment, through detecting element and interior bucket mutually independent setting, the height of pasting the bucket load through detecting element acquisition fixed position department, the position that detecting element obtained the height of pasting the bucket load does not change along with interior rotation of bucket, the barrel condition of pasting of the load that fixed position department obtained constantly changes along with interior rotation of bucket, and then can fully learn the height of pasting the bucket load of following interior bucket circumference distribution in the rotatory in-process of bucket, and then obtain more accurate difference in height, avoid the judgement mistake because of the difference in height is inaccurate and lead to, the reliability of eccentric detection has been improved.

Specifically, as shown in fig. 2, after the detecting unit detects the maximum value of the barrel attaching load height and the minimum value of the barrel attaching load height, the connecting line of the position of the detecting unit and the minimum value and the maximum value of the barrel attaching load height is used as the inclined edge to form two right-angled triangles taking the peripheral wall of the inner barrel as the right-angle edge, the distance between the position of the detecting unit and the peripheral wall of the inner barrel in the two right-angled triangles is fixed, and then the two triangles can be directly obtained by the Pythagorean theorem, and the height difference is calculated by the length of the right-angle edge of the peripheral wall of the inner barrel, wherein the specific formula is as follows:

Wherein: x is the height difference; b is the distance between the minimum value of the barrel attaching load height and the position of the detection unit; a is the distance between the maximum value of the barrel attaching load height and the position of the detection unit; c is the distance between the position of the detection unit and the peripheral wall of the inner barrel.

The height difference calculated by the formula can accurately reflect the distribution condition of the load, and then the load is redistributed under the condition of uneven distribution, so that the problems of increased rinsing times and prolonged dehydration time caused by barrel collision or eccentric detection triggering caused by dehydration starting failure are avoided, and the intelligent level of the washing machine and the use experience of users are improved.

The invention also provides a washing machine adopting the eccentric detection control method, which is concretely as follows.

Example III

As another embodiment of the present invention, this embodiment provides a washing machine employing the eccentricity detection control method as described in embodiment two.

Specifically, in the present embodiment, the structure of the washing machine 1 is as shown in fig. 1, including,

An inner tub 11 rotatably provided inside the washing machine 1;

The detection unit 2 is arranged independently of the inner barrel 11 and is used for acquiring the height of the barrel attaching load at a fixed position in the inner barrel 11;

and the control unit is in communication connection with the detection unit 2 and is used for receiving the height of the barrel pasting load acquired by the detection unit 2 and adjusting the load distribution state when judging that the load distribution is uneven according to the change condition of the load height.

The calculation formula as described in the second embodiment is preset in the control unit, and after the detection unit 2 obtains the maximum value and the minimum value of the barrel-pasting load height, the maximum value and the minimum value of the barrel-pasting load height are sent to the control unit, and the control unit marks the maximum value and the minimum value of the barrel-pasting load height respectively and brings the maximum value and the minimum value into the formula to calculate.

In the above scheme, it should be noted that, the distance between the position of the detecting unit 2 and the peripheral wall of the inner tub 11 in the formula may be a value that is measured and preset before leaving the factory, or may be a value that is automatically measured during the operation of the washing machine 1, that is, before each calculation using the formula, the distance between the position of the detecting unit 2 and the peripheral wall of the inner tub 11 is automatically calibrated by the washing machine 1; it may also be provided as an editable, i.e. manually measured and manually calibrated value during periodic maintenance of the washing machine 1 by a user or maintenance personnel.

Further, the washing machine 1 further includes a control panel seat 12, the detecting unit 2 is disposed at an inner side of the control panel seat 12 and is disposed toward an inner side of the inner tub 11, and a fixed position detected by the detecting unit 2 is an inner tub 11 wall passing through the other side opposite to the detecting unit 2 in a cross section of the inner tub 11 passing through an axis of the inner tub 11.

Further, in this embodiment, the detecting unit 2 sends a signal to the peripheral wall of the inner barrel 11, and determines the height of the barrel load in the inner barrel 11 by using the reflected signal, where the detecting unit 2 is a conventional sensor capable of implementing distance measurement, which is not described herein in detail, and conventional replacement made by those skilled in the art for the type and measurement mode of the detecting unit 2 on the basis of the known technical principle of the present invention also falls within the protection scope of the present invention.

The foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited to the above-mentioned embodiment, but is not limited to the above-mentioned embodiment, and any simple modification, equivalent change and modification made by the technical matter of the present invention can be further combined or replaced by the equivalent embodiment without departing from the scope of the technical solution of the present invention.

Claims

1. A method for detecting and controlling eccentricity of a washing machine is characterized by comprising the following steps;

2. The eccentricity detection control method of a washing machine according to claim 1, wherein a highest position of a bonding height of the load and the inner tub is defined as a maximum value of a bonding height of the tub, and a lowest position of the bonding height of the load and the inner tub is defined as a minimum value of the bonding height of the tub;

3. The eccentricity detection control method according to claim 2, wherein in step S2, the height difference is compared with a preset threshold value, and the height difference is greater than the preset threshold value, so as to determine that the load is uneven.

4. The eccentricity detection control method according to claim 3, wherein a height difference is obtained in a drainage process, and after the load is judged to be uneven according to the height difference, whether water exists in the inner tub is detected, and a corresponding program is executed according to the judgment result.

5. The eccentricity detection control method according to claim 3, wherein the load distribution state is adjusted after water is fed into the inner tub to a minimum value of the load height if it is judged that there is no water in the inner tub; otherwise, directly adjusting the load distribution state;

And (5) returning to the step (S1) after adjusting the distribution state of the load.

6. The eccentricity detection control method for washing machine according to any one of claims 2 to 5, wherein a height of the tub-attached load at a fixed position is obtained;

7. The eccentricity detection control method according to claim 6, wherein a height of the tub-attached load at a fixed position is obtained by the detection unit;

8. A washing machine, characterized in that the eccentricity detection control method according to any one of claims 1 to 7 is adopted.

9. A washing machine as claimed in claim 8, comprising,

The inner barrel is rotatably arranged in the washing machine;

10. The washing machine as claimed in claim 9, wherein the washing machine further comprises a control panel seat, the detection unit is disposed at an inner side of the control panel seat, and disposed toward an inside of the inner tub;