CN113089256B - Washing machine dehydration control method and washing machine - Google Patents
Washing machine dehydration control method and washing machine Download PDFInfo
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- CN113089256B CN113089256B CN202110304844.5A CN202110304844A CN113089256B CN 113089256 B CN113089256 B CN 113089256B CN 202110304844 A CN202110304844 A CN 202110304844A CN 113089256 B CN113089256 B CN 113089256B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
- D06F33/40—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of centrifugal separation of water from the laundry
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/48—Preventing or reducing imbalance or noise
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/16—Imbalance
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/18—Condition of the laundry, e.g. nature or weight
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/04—Quantity, e.g. weight or variation of weight
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/26—Unbalance; Noise level
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
- D06F2105/48—Drum speed
Abstract
The invention provides a washing machine dehydration control method and a washing machine. The dewatering control method of the washing machine comprises the following steps: entering a dehydration process; detecting static unbalance, judging whether the static unbalance is smaller than a first static threshold value or not, and performing unwrapping operation when the static unbalance is larger than or equal to the first static threshold value; when the static unbalance amount is smaller than the static threshold value, detecting the weight of the clothes, judging whether the weight of the clothes is smaller than a first weight threshold value or not, executing the unwrapping operation when the weight of the clothes is larger than or equal to the first weight threshold value, performing speed-up dewatering when the weight of the clothes is smaller than the first weight threshold value, performing dynamic unbalance detection in the speed-up dewatering operation process, and adjusting the rotating speed according to a detection structure. The invention improves the dehydration operation stability and prolongs the service life of the washing machine by adding multiple parameter detection and protection in the dehydration process.
Description
Technical Field
The invention relates to the technical field of washing machines, in particular to a washing machine dehydration control method and a washing machine.
Background
Traditional washing machine all relies on eccentric weighing to confirm the dehydration rotational speed to guarantee that the dehydration goes on smoothly, and along with the style of clothing, the kind of material constantly increases, if only rely on eccentric weighing value to confirm the dehydration rotational speed, can appear because of the parameter variation that the clothing kind change brought, lead to the control parameter to become invalid, the easy phenomenon such as hitting the bucket, shifting that appears makes the dehydration go on smoothly, and cause the damage to washing machine easily.
Disclosure of Invention
In view of the above, the present invention provides a washing machine dehydration control method and a washing machine, which are at least used for solving the technical problem that the tub collision is easy to occur in the washing machine dehydration in the prior art, and specifically:
in a first aspect, the present invention provides a dehydration control method for a washing machine, comprising:
entering a dehydration process;
detecting a static unbalance amount and judging whether the static unbalance amount is smaller than a first static threshold value,
performing a unwrapping operation when the static unbalance amount is greater than or equal to the first static threshold;
detecting a laundry weight when the static unbalance amount is less than the static threshold value, and determining whether the laundry weight is less than a first weight threshold value,
performing the disentangling operation when the laundry weight is greater than or equal to the first weight threshold,
and when the weight of the clothes is smaller than the first weight threshold value, performing acceleration dehydration, performing dynamic unbalance detection in the acceleration dehydration operation process, and adjusting the rotating speed according to a detection structure.
Further optionally, the static imbalance detection comprises:
the washing drum runs at a first preset rotating speed for n seconds;
calculating a first current I of the motor during operation at the first preset rotating speedq，
According to IqCalculating the static unbalance amount V1, wherein the calculation formula of V1 is as follows:
wherein in is the real-time current of the nth second.
Further optionally, the accelerated dewatering comprises:
detecting the dynamic unbalance amount in the acceleration process, judging whether the dynamic unbalance amount is less than the dynamic threshold value,
when the dynamic unbalance amount is larger than or equal to the dynamic threshold value, re-entering the dehydration process;
when the dynamic unbalance amount is smaller than the dynamic threshold, calculating whether the variation coefficient of the unbalance amount is smaller than the variation threshold,
when the variation coefficient is larger than or equal to the variation threshold, re-entering the dehydration process; when the variation coefficient is smaller than the variation threshold value, the speed is increased to the rotating speed N, and the running time t is maintained,
the coefficient of variation is
Wherein x is iqThe value of (a) is,
is the average over n detection periods.
Further optionally, the rotation speed range of the acceleration dewatering is as follows: 93rpm-400 rpm.
Further optionally, the increased-speed dewatering starts the increased-speed operation from the first preset rotating speed.
Further optionally, the dynamic unbalance amount V2, V2 ═ c is detected periodically during the acceleration dewatering process1iq*a*L+c2Wherein c is1，c2To correct the coefficient, iqIn order to detect the real-time current value in the period, a is the acceleration in the first preset rotating speed interval, and L is the weighing value.
Further optionally, the detection period is 1s-2 s.
Further optionally, after the rotating speed N is maintained for the running time t, the rotating speed is reduced to the first preset rotating speed, the static unbalance is detected,
determining whether the static unbalance amount is less than a second static threshold,
re-entering a dehydration process when the static unbalance amount is greater than or equal to the second static threshold value;
detecting a laundry weight when the static unbalance amount is less than the second static threshold value, and determining whether the laundry weight is less than a second weight threshold value,
re-entering the dehydration process when the laundry weight is greater than or equal to the second weight threshold,
and when the weight of the clothes is smaller than the second weight threshold value, increasing the rotating speed to a set rotating speed for dewatering.
In a further alternative,
the first static threshold is greater than the second static threshold; and/or the presence of a gas in the gas,
the first weight threshold is greater than the second weight threshold.
In a second aspect, the present invention provides a washing machine, which is controlled by the above-mentioned washing machine dehydration control method to perform dehydration.
The invention dehydrates after obtaining the static unbalance amount, enters the acceleration dehydration stage, and can correct parameters in the dehydration process in order to prevent the unbalance amount parameters from changing due to the change of the shape after the load is dehydrated, namely, the rotating speed is adjusted by the detection of the dynamic unbalance amount and the detection of the variation coefficient, so that the phenomenon of barrel collision and displacement can not occur in the whole dehydration stage.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.
FIG. 1 is a flow chart illustrating a first stage of a dehydration control method of a washing machine according to the present invention;
FIG. 2 is a flow chart illustrating a second stage of the dewatering control method of the washing machine according to the present invention;
FIG. 3 is a third stage flow chart of the dewatering control method for washing machine according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
The invention dehydrates after obtaining the static unbalance amount, enters the acceleration dehydration stage, and can correct parameters in the dehydration process in order to prevent the unbalance amount parameters from changing due to the change of the shape after the load is dehydrated, namely, the rotating speed is adjusted by the detection of the dynamic unbalance amount and the detection of the variation coefficient, so that the phenomenon of barrel collision and displacement can not occur in the whole dehydration stage. The invention is described in detail below with reference to specific examples:
as shown in fig. 1, 2 and 3, the present invention provides a dehydration control method for a washing machine, including:
entering a dehydration process;
detecting a static unbalance amount and judging whether the static unbalance amount is smaller than a first static threshold value,
performing a unwrapping operation when the static unbalance amount is greater than or equal to the first static threshold;
detecting a laundry weight when the static unbalance amount is less than the static threshold value, and determining whether the laundry weight is less than a first weight threshold value,
performing the disentangling operation when the laundry weight is greater than or equal to the first weight threshold,
performing accelerated dehydration when the weight of the laundry is less than the first weight threshold;
and carrying out dynamic unbalance detection in the acceleration dehydration running process, and adjusting the rotating speed according to the detection structure.
Preferably, the first static threshold is the first 200g of the eccentricity resistance of the whole machine, and if the eccentricity resistance of the whole machine is 1200g, the value range corresponding to the general threshold a is the value mapped by the eccentric mass 1000 g. The first weight threshold value is a numerical value mapped by the representation of the actual weight of the clothes in the motor, generally, the value range of the first weight threshold value is divided according to different gears distinguished by the first weight threshold value, and the clothes weight and the final speed of acceleration of the clothes are different in different gears under the same unbalance amount.
Specifically, static imbalance detection includes:
the washing drum runs at a first preset rotating speed for n seconds, and a first current I of the motor in the process is calculatedqFirst current IqThe average current in n seconds is the static unbalance amount
Wherein in is the real-time current of the nth second. Preferably, the first preset rotating speed is 93rpm, the running time n is 3s-5s, the current values of the motors are detected in the process, and the static unbalance amount V1 is obtained through calculation.
As shown in fig. 2, preferably, entering the accelerated dehydration stage comprises:
detecting the dynamic unbalance amount of the gradual speed-up operation in a first preset rotating speed interval, judging whether the dynamic unbalance amount is smaller than a dynamic threshold value,
when the dynamic unbalance amount is larger than or equal to the dynamic threshold value, re-entering the dehydration process;
when the dynamic unbalance amount is smaller than the dynamic threshold, calculating whether the variation coefficient of the unbalance amount is smaller than the variation threshold,
when the variation coefficient is larger than or equal to the variation threshold, re-entering the dehydration process; when the variation coefficient is smaller than the variation threshold, increasing the speed to a rotation speed N, and maintaining the operation time length t, preferably, N is the ground rotation speed, and the value range is generally: 300rpm-400 rpm; t is 40s-60s, and the low-speed dehydration aims at dehydrating part of water and reducing the variability in the stage.
Preferably, the rotating speed in the first preset rotating speed interval is greater than the first preset rotating speed, the value range of the first preset rotating speed interval is preferably 93-400 rpm, and the washing drum rotates in an accelerated manner in the first preset rotating speed interval in the dynamic unbalance detection process.
Periodically detecting dynamic unbalance amount V2, V2 ═ c in the first preset rotating speed interval1iq*a*L+c2Wherein c is1，c2To correct the coefficient, iqIn order to detect the real-time current value of the motor in the period, a is the acceleration in the first preset rotating speed interval, and L is a weighing value. Preferably, the detection period is 1s-2 s. Preferably, the dynamic threshold is an unbalance amount occurring at the barrel collision critical value in the process of rotating speed from 93rpm to 400rpm, and the unbalance amount is judged all the time in the rotating speed interval.
The coefficient of variation is:
wherein x is iqThe value of (a), i.e. the real-time current value in each sensing period,
is the average over n detection periods. Preferably, the variation threshold value range is calculated according to a value, whether the variation is generated or not is generally judged, the variation and the correlation function need to be satisfied, and if the correlation is greater than 0.8, the variation is not generated.
As shown in fig. 3, the washing drum is kept at the rotation speed N for the operation time t, the rotation speed is low in the stage, so that the dehydrated clothes can be dehydrated in a certain course, and the water loss amount in the stage is different due to different clothes materials and different water absorption performance, so that the eccentric state is changed after the stage. Therefore, the rotating speed is reduced to the first preset rotating speed, the static unbalance is detected again, and then whether the static unbalance is smaller than a second static threshold value or not is judged, wherein the first static threshold value is larger than the second static threshold value,
re-entering a dehydration process when the static unbalance amount is greater than or equal to the second static threshold value;
detecting a laundry weight and determining whether the laundry weight is less than a second weight threshold when the static unbalance amount is less than the second static threshold, wherein the first weight threshold is greater than the second weight threshold,
re-entering the dehydration process when the laundry weight is greater than or equal to the second weight threshold,
and when the weight of the clothes is smaller than the second weight threshold value, increasing the rotating speed to a set rotating speed for dewatering.
The control method of the invention adds the detection protection of the dynamic unbalance and the judgment protection of the parameter variation coefficient on the premise of eccentric control, corrects the uncertain state of the load after the load loses water, which causes the unbalance of the load to change, and the dynamic unbalance protection and the judgment whether the parameter varies or not provided in the rotating speed interval can effectively correct the difference of the unbalance by detection, so that the load can normally carry out high-speed dehydration without the phenomena of barrel collision, displacement and the like.
The method effectively prevents the possibility of barrel collision caused by unbalance variation in the speed increasing process, further maintains the time t at the stage of N rotating speed, reduces the speed to a static unbalance state, judges parameters such as unbalance and the like again, and ensures that the phenomena such as barrel collision displacement and the like cannot occur at the high-speed dewatering stage.
The invention also provides a washing machine, which is controlled by the washing machine dehydration control method to carry out dehydration. The load state of the invention can dehydrate the load at a corresponding rotating speed according to the detected static unbalance amount and the weighing value. However, due to the different shapes and materials of the clothes, such as cotton clothes, cotton trousers, bath towels and the like, the characteristics of strong water absorption and uneven distribution of the materials are realized, and a small eccentric state can be formed when the eccentric state is detected at a low rotating speed, so that the clothes can be in a dehydration state under the command of a main control. And along with the increase of the rotating speed of the roller, the water loss rate of each part of the load is different, the eccentricity and the detected eccentricity are different, and if the rotating speed is further increased, the risk of barrel collision and displacement is probably caused. Therefore, after the low rotating speed N is maintained for a period of time, partial water of the load is lost, the speed is reduced to a static unbalance state stage, the change of the load form is further ensured not to be large, the unbalance amount and the weighing value are obtained again, the corresponding rotating speed state is entered, and the dehydration is completed.
The dehydration control logic of the invention not only improves the unbalance stability of the drum washing machine, but also effectively eliminates the risk of drum collision and displacement of the drum washing machine, and if eccentric variation occurs, high-speed dehydration is carried out, the vibration noise is obvious, and the user experience feeling is uncomfortable.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (9)
1. A dehydration control method of a washing machine, characterized by comprising:
entering a dehydration process;
detecting a static unbalance amount and judging whether the static unbalance amount is smaller than a first static threshold value,
performing a unwrapping operation when the static unbalance amount is greater than or equal to the first static threshold;
detecting the weight of the laundry when the static unbalance amount is less than the first static threshold value, and determining whether the weight of the laundry is less than a first weight threshold value,
performing the disentangling operation when the laundry weight is greater than or equal to the first weight threshold,
when the weight of the clothes is less than the first weight threshold value, the accelerated dehydration is carried out, the dynamic unbalance detection is carried out in the accelerated dehydration running process, the rotating speed is adjusted according to a detection structure,
the accelerated dehydration comprises the following steps:
detecting the dynamic unbalance amount in the acceleration process, judging whether the dynamic unbalance amount is less than the dynamic threshold value,
when the dynamic unbalance amount is larger than or equal to the dynamic threshold value, re-entering the dehydration process;
when the dynamic unbalance amount is smaller than the dynamic threshold, calculating whether the variation coefficient of the unbalance amount is smaller than the variation threshold,
when the variation coefficient is larger than or equal to the variation threshold, re-entering the dehydration process; when the variation coefficient is smaller than the variation threshold value, the speed is increased to the rotating speed N, and the running time t is maintained,
the coefficient of variation is
Wherein x is iqValue of (a), iqIn order to detect the real-time current value in the period,
is the average current value in n detection periods.
2. The dehydration control method of a washing machine according to claim 1, wherein said static unbalance detection comprises:
the washing drum runs at a first preset rotating speed for n seconds;
calculating a first current I of the motor during operation at the first preset rotating speedq，
According to IqCalculating the static unbalance amount V1, wherein the calculation formula of V1 is as follows:
wherein inThe current is real time at the nth second.
3. The dehydration control method of a washing machine according to claim 2, wherein the rotation speed range of the accelerated dehydration is: 93rpm-400 rpm.
4. The dehydration control method of a washing machine according to claim 3, wherein the accelerated dehydration is operated at an accelerated speed from the first preset rotation speed.
5. The dehydration control method of a washing machine according to claim 2, wherein a dynamic unbalance amount V2, V2 ═ c is periodically detected during the accelerated dehydration process1iq*a*L+c2Wherein c is1，c2To correct the coefficient, iqIn order to detect the real-time current value in the period, a is the acceleration in the first preset rotating speed interval, and L is the weighing value.
6. The dehydration control method of a washing machine according to claim 4 or 5, wherein the detection period is 1s-2 s.
7. A dewatering control method for a washing machine as claimed in any one of claims 2 to 5, wherein after the speed N is maintained for a period of time t, the speed is reduced to the first predetermined speed and the static unbalance is detected,
determining whether the static unbalance amount is less than a second static threshold,
re-entering a dehydration process when the static unbalance amount is greater than or equal to the second static threshold value;
detecting a laundry weight when the static unbalance amount is less than the second static threshold value, and determining whether the laundry weight is less than a second weight threshold value,
re-entering the dehydration process when the laundry weight is greater than or equal to the second weight threshold,
and when the weight of the clothes is smaller than the second weight threshold value, increasing the rotating speed to a set rotating speed for dewatering.
8. The dehydration control method of a washing machine according to claim 7,
the first static threshold is greater than the second static threshold; and/or the presence of a gas in the gas,
the first weight threshold is greater than the second weight threshold.
9. A washing machine characterized by performing dehydration controlled by the dehydration control method of a washing machine according to any one of claims 1 to 8.
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| CN117966431A (en) * | 2022-10-25 | 2024-05-03 | 青岛海尔洗衣机有限公司 | Method for improving spin-drying achievement rate of washing machine, storage medium and electronic device |
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