CN112442832A - Control method of washing machine and washing machine - Google Patents
Control method of washing machine and washing machine Download PDFInfo
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- CN112442832A CN112442832A CN201910799978.1A CN201910799978A CN112442832A CN 112442832 A CN112442832 A CN 112442832A CN 201910799978 A CN201910799978 A CN 201910799978A CN 112442832 A CN112442832 A CN 112442832A
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Abstract
The invention discloses a control method of a washing machine and the washing machine, the washing machine comprises an inner barrel and a wave wheel, a first gravity sensor is arranged on the peripheral wall of the inner barrel, a second gravity sensor is arranged on the wave wheel, the control method comprises the following steps: when the washing machine executes the unwinding program after dehydration, the unwinding working process is controlled according to the range of the ratio of the load amounts detected by the first gravity sensor and the second gravity sensor. According to the invention, the clothes can be unwound according to the winding degree of the clothes after the washing machine is dehydrated, the problem of winding of the dehydrated clothes can be rapidly and effectively solved, and a user can directly dry the scattered clothes after the unwinding procedure is finished, so that the clothes are prevented from being damaged, and the user experience is improved.
Description
Technical Field
The invention belongs to the field of clothes treatment devices, and particularly relates to a control method of a washing machine and the washing machine.
Background
The washing machine is a washing device for washing clothes by using electric energy, and along with the acceleration of life rhythm and the pursuit of people for life comfort, the washing machine becomes an indispensable household appliance in daily life of people. However, the clothes of the existing pulsator washing machine are easy to be knotted and wound after washing and dewatering. The user still need untie the clothing earlier when the sunning, when the clothing twines seriously, the user will waste time and energy or even still can damage the clothing when untiing the clothing, causes relatively poor user experience.
Some current pulsator washing machines adopt a single water flow mode: namely, in order to achieve a better washing effect, a stronger water flow is used, and in order to reduce the entanglement of the laundry, a weaker water flow is used. However, this method does not solve the problem of the entanglement and washing of the laundry well. In order to achieve both of them, some washing machines perform washing by sequentially combining a plurality of water flows so as to desirably achieve a high washing degree while preventing the laundry from being entangled. However, the method still cannot determine the entanglement of the dehydrated laundry, and the entanglement state of the dehydrated laundry cannot be changed, so that the problem of entanglement of the dehydrated laundry cannot be solved well.
The present invention has been made in view of this situation.
Disclosure of Invention
The invention provides a control method of a washing machine and the washing machine, which can unwind according to the winding degree of clothes after the washing machine dehydrates, can quickly and effectively solve the problem of winding of the dehydrated clothes, and can directly dry the scattered clothes after the unwinding procedure is finished, thereby avoiding the damage of the clothes and simultaneously improving the user experience.
In order to solve the technical problems, the invention adopts the technical scheme that:
the first purpose of the invention is to provide a control method of a washing machine, which comprises an inner barrel and a wave wheel, wherein a first gravity sensor is arranged on the peripheral wall of the inner barrel, a second gravity sensor is arranged on the wave wheel, and when the washing machine executes an unwinding program after dehydration, the unwinding working process is controlled according to the range of the ratio of the load capacity detected by the first gravity sensor and the load capacity detected by the second gravity sensor.
According to a further scheme, a plurality of ratio ranges are preset in the washing machine, the ratio range is judged according to the ratio of the actual detection value R of the first gravity sensor to the actual detection value R of the second gravity sensor, and the inner barrel is controlled to rotate according to parameters corresponding to the ratio ranges and then suddenly stops to unwind.
In a further scheme, the parameters corresponding to the ratio ranges comprise a rotation angle for controlling the inner barrel to rotate and suddenly stop and/or a rotation speed reached when the inner barrel rotates and suddenly stops;
preferably, after the washing machine performs the unwinding operation each time, the first gravity sensor and the second gravity sensor detect again, and the washing machine determines the ratio range again according to the ratio of the load amounts detected by the first gravity sensor and the second gravity sensor, and performs the unwinding operation according to the corresponding parameters.
In a further scheme, the rotating angles of the inner barrel rotating and suddenly stopping corresponding to the ratio ranges of which the ratios are sequentially reduced are sequentially increased;
and/or the rotating speeds reached when the inner barrel rotates and suddenly stops corresponding to the ratio ranges of which the ratios are sequentially reduced are sequentially increased;
preferably, the rotation angle for controlling the inner tub to rotate to make sudden stop and the rotation speed are in positive linear correlation corresponding to each ratio range.
In a further scheme, the preset ratio range of the washing machine comprises a first range, a second range and a third range, wherein the ratio is sequentially reduced, and the rotating angle and the rotating speed of the inner barrel in the sudden stop corresponding to the first range, the second range and the third range are sequentially increased.
Further still, the first range is not less than 7/3, the second range is less than 7/3 and not less than 1, and the third range is less than 1 and not less than 3/7.
In a further scheme, the washing machine executes an unwinding program after dehydration:
when R/R is more than or equal to 7/3, the washing machine controls the rotation angle A1 of the inner barrel, and the washing machine stops suddenly after the rotation speed is increased to V1;
when 7/3 is larger than R/R and is larger than or equal to 1, the washing machine controls the rotation angle A2 of the inner barrel, and the rotation speed is increased to V2 and then the washing machine is suddenly stopped;
when R/R is more than 1 and more than or equal to 3/7, the washing machine controls the rotation angle A3 of the inner barrel, and the washing machine is stopped suddenly after the rotation speed is increased to V3;
wherein the rotation angle A2 is twice that of A1, and A3 is three times that of A1; the rotational speed V2 is twice that of V1, and V3 is three times that of V1.
As a specific solution, it is possible to use,
when R/R is more than or equal to 7/3, the washing machine controls the inner barrel to rotate for 60 degrees and the rotating speed is increased to 3R/min for sudden stop; the speed is used for leading the washing machine to firstly unwind and wind lighter clothes, and the abrasion is reduced.
When 7/3 is larger than R/R and is larger than or equal to 1, the washing machine controls the inner barrel to rotate for 120 degrees and the rotating speed is increased to 6R/min for sudden stop; at this point, the less-entangled clothes are already unwound, and moderate clothes are unwound at this speed;
when the R/R is more than 1 and more than or equal to 3/7, the washing machine controls the inner barrel to rotate 180 degrees and the rotating speed is increased to 9R/min for sudden stop; at this time, a small part of the cloth left to be entangled is not unwound, and the cloth having a serious entanglement is unwound at this speed.
In a further scheme, when 3/7 is larger than R/R, the washing machine finishes the unwinding process;
preferably, the washing machine ends the unwinding process when the washing machine judges 3/7 > R/R to continuously occur N1 times.
In the present invention, N1 times may be specifically set according to information such as the model of the washing machine, for example, N1 times may be 8 times or 10 times or more.
In a further scheme, when the washing machine judges that R/R is more than or equal to 3/7 and N2 times continuously occur, the clothes are judged to be seriously wound, the unwinding program is ended, and a user is prompted to manually unwind. After the machine continuously unwinds for N2 times, the unwinding effect is still not ideal, which indicates that the clothes are very seriously wound, the clothes cannot be unwound by the washing machine, the unwinding command needs to be finished, the user is prompted to manually unwind, and the meaningless waste of resources is avoided. In the present invention, N2 times may be specifically set according to information such as the model of the washing machine, for example, N2 times may be 8 times or 10 times or more.
A second object of the present invention is to provide a washing machine having the control method according to any one or combination of the above aspects, the washing machine including an inner tub and a pulsator, the circumferential wall of the inner tub being provided with a first gravity sensor, the pulsator being provided with a second gravity sensor,
preferably, the first gravity sensor is disposed at a lower portion of a circumferential wall of the inner tub, and the second gravity sensor is disposed at a middle portion of the pulsator.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the clothes can be unwound according to the winding degree of the clothes after the washing machine is dehydrated, the problem of winding of the dehydrated clothes can be rapidly and effectively solved, and a user can directly dry the scattered clothes after the unwinding procedure is finished, so that the clothes are prevented from being damaged, and the user experience is improved.
2. The washing machine of the invention is provided with a first gravity sensor on the peripheral wall of the inner barrel, a second gravity sensor on the impeller, the washing machine judges the winding degree of clothes according to the range of the ratio of the load detected by the first gravity sensor and the second gravity sensor, and controls the working process of unwinding; the mode for judging the clothes winding degree is accurate and effective, and is beneficial to the washing machine to select proper action to unwind according to specific conditions. In addition, the invention can be modified on the existing washing machine, and has simple modification mode and low cost.
3. According to the control method, the rotating speed and the rotating angle of the inner barrel of the washing machine are set on the premise of fully considering the abrasion of clothes, the washing machine unwinds the lighter clothes firstly and then unwinds the more serious clothes, the abrasion rate of the clothes can be effectively reduced, the rotating speed and the rotating angle of the inner barrel are arranged in a positive linear mode, the motor can keep the same acceleration, and the service life of the motor is prolonged.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic view illustrating a distribution state of the dehydrated laundry in an inner tub according to the present invention;
FIG. 2 is a schematic view illustrating the distribution of laundry in the inner tub after the washing machine according to the present invention is unwound;
fig. 3 is a schematic view of the inner tub structure of the washing machine of the present invention.
In the figure: 1 inner barrel, 2 wave wheel, 3 first gravity sensor, 4 second gravity sensor, 5 clothes.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
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 will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
At present, the clothes state after dehydration of a pulsator washing machine is generally as shown in fig. 1: most of clothes 5 are tightly close to the inner barrel wall and distributed in the inner barrel 1 in a V shape, the clothes are directly wound in the distribution mode, a user needs to unwind the clothes firstly when airing, and when the clothes are seriously wound, the user can waste time and labor and even damage the clothes when unwinding the clothes, so that poor user experience is caused.
The invention provides a control method of a washing machine, the washing machine comprises an inner barrel 1, the bottom of the inner barrel 1 is provided with an impeller 2, the peripheral wall of the inner barrel 1 is provided with a first gravity sensor 3, the impeller 2 is provided with a second gravity sensor 4, and when the washing machine executes a de-winding program after dehydration, the de-winding working process is controlled according to the range of the ratio of the load capacity detected by the first gravity sensor and the second gravity sensor.
Compared with the common washing machine, the washing machine of the invention has two more gravity sensors, including a first gravity sensor arranged on the peripheral wall of the inner barrel and a second gravity sensor arranged on the impeller. The first gravity sensor may be referred to as an inner tub sensor, and the second gravity sensor may be referred to as a pulsator sensor. The ratio of the load R detected by the first gravity sensor to the load R detected by the second gravity sensor can represent the distribution state of the clothes in the inner barrel, and the larger the ratio is, the more the clothes tend to the distribution state shown in fig. 1, namely, the larger the winding degree between the clothes is; the smaller the ratio, the more the laundry approaches the distribution shown in fig. 2, i.e., the less entanglement between the laundry. Therefore, the washing machine judges the winding degree of the clothes according to the range of the ratio of the load detected by the first gravity sensor and the second gravity sensor, namely judges the distribution state of the clothes in the inner barrel, and then controls the unwinding working process. So washing machine can be with the clothing after the dehydration unwrapping, and the user can directly carry out the sunning with the clothing of dispersion after the unwrapping procedure, avoids the clothing damage, improves user experience simultaneously.
The washing machine presets and stores a plurality of ratio ranges, the corresponding ratio range is judged according to the ratio of the actual detection value R of the first gravity sensor and the actual detection value R of the second gravity sensor, and the inner barrel is controlled to rotate according to the parameters corresponding to the ratio range and then suddenly stops to unwind.
The principle of the unwrapping method of the invention is as follows: when the clothes are dehydrated and distributed in the inner barrel in a V shape, the inner barrel is slowly rotated and then suddenly stopped, and the clothes are unwound and distributed in the inner barrel according to the figure 2 due to the vibration generated by the inertia of the clothes; theoretically, the closer the distribution of the clothes in the inner tub is to fig. 2, the better the disentangling effect is, and the closer the distribution of the clothes in the inner tub is to fig. 1, the worse the disentangling effect is.
In the invention, a plurality of ratio ranges are preset and stored in the washing machine, and corresponding proper unwinding parameters are preset corresponding to each ratio range. So, can fully consider under the different condition of clothing winding degree, adopt the more suitable unwrapping action of separating to reduce the wearing and tearing of clothing, reach better unwrapping effect, avoid the winding of different degrees to adopt the unwrapping action of the same intensity to cause the great wearing and tearing of clothing. A plurality of ratio ranges preset by the washing machine can be determined according to different models of the washing machine, and the unwrapping parameters corresponding to the ranges are obtained by theoretically combining experiments. The range of ratios may include two or more.
After the washing machine obtains the actual detection value R of the first gravity sensor and the actual detection value R of the second gravity sensor, the specific ratio range to which the ratio of R/R belongs is analyzed, and then the unwrapping action is executed according to the parameters corresponding to the specific ratio range, so that the optimal unwrapping effect can be achieved on the premise of reducing the abrasion of clothes. Meanwhile, after the washing machine executes the unwrapping action once, the wrapping degree of the clothes is judged again according to the ratio of the load amounts detected by the first gravity sensor and the second gravity sensor, the range of the ratio is determined again, and the unwrapping action is adjusted, so that the optimal unwrapping effect is achieved.
Further, the parameters corresponding to the ratio ranges include a rotation angle for controlling the inner barrel to rotate suddenly and/or a rotation speed achieved when the inner barrel rotates suddenly and stops.
The washing machine achieves the effect of unwinding by controlling the inner barrel to rotate and suddenly stop, so that the rotating angle and the rotating speed of the inner barrel during sudden stop are very important for the unwinding effect. Due to the existence of friction force, the wound clothes can have certain abrasion in the process of unwinding, and the abrasion condition of the clothes at the same rotating speed and rotating angle is different for the clothes with different winding degrees. In order to effectively reduce the wear rate of clothes, the washing machine controls the inner barrel to rotate at a corresponding rotation angle and rotation speed and then suddenly stop so as to ensure that the wear rates of the clothes with different winding degrees are lower.
The verification of the rotating speed and the rotating angle of the inner barrel of the washing machine under the premise of considering the abrasion of the clothes leads to the following conclusion: when the rotation angle of the inner tub is not more than 180 °, the disentangling effect is better and better as the rotation speed of the inner tub is increased, but the abrasion of the laundry is more serious as the rotation speed of the inner tub is higher. Therefore, the corresponding rotating angle and rotating speed of the inner barrel in the rotating and sudden stopping process under different ratio ranges are adjusted, so that the disentanglement effect can be ensured, and the wear of clothes is reduced. In the concrete scheme, the rotating angle of the inner barrel in the rotating sudden stop can be adjusted, the rotating speed can be adjusted, or the rotating angle and the rotating speed can be controlled and adjusted at the same time, so that the best effect is achieved.
Preferably, after the washing machine performs the unwinding operation each time, the first gravity sensor and the second gravity sensor detect again, and the washing machine determines the ratio range again according to the ratio of the load amounts detected by the first gravity sensor and the second gravity sensor, and performs the unwinding operation according to the corresponding parameters.
In a further scheme, the rotating angles of the inner barrel rotating and suddenly stopping corresponding to the ratio ranges of which the ratios are sequentially reduced are sequentially increased; and/or the rotating speed reached when the inner barrel rotates and suddenly stops corresponding to each ratio range with the ratio reduced in sequence is increased in sequence.
When the ratio range of R/R is larger, the clothes are more inclined to the V-shaped distribution shown in figure 1, most of the clothes are in a winding state, some of the clothes are wound lightly and some of the clothes are wound heavily, and at the moment, the rotating angle and/or the rotating speed of the inner barrel of the washing machine for controlling the rotation of the inner barrel to stop suddenly are smaller, so that the clothes which are wound lightly can be unwound first; as the ratio range of R/R becomes smaller, which means that the less-wound clothes are unwound and part of the clothes are wound moderately or severely, the inner barrel is controlled to rotate at an increased rotation angle and/or rotation speed for sudden stop, so that the more-wound clothes can be unwound without generating larger abrasion. Similarly, in the specific scheme, only the rotation angle of the inner barrel during the sudden stop can be adjusted, only the rotation speed can be adjusted, or the rotation angle and the rotation speed can be controlled and adjusted at the same time, so that the best effect is achieved.
Therefore, the benefit of this arrangement in this scheme is: the washing machine is firstly unwound from the lighter clothes and then unwound from the heavier clothes, so that the wear rate of the clothes can be effectively reduced,
as a preferred scheme, the rotating angle and the rotating speed of the inner barrel corresponding to each ratio range for controlling the rotating sudden stop are in positive linear correlation, so that the motor can keep the same acceleration, and the service life of the motor is prolonged.
As a more specific embodiment, the ratio range preset by the washing machine of the present invention includes a first range, a second range and a third range in which the ratio decreases in order, and the rotation angle of the inner tub at the sudden stop and the rotation speed reached corresponding to the first range, the second range and the third range are increased in order.
Wherein the first range is not less than 7/3, the second range is less than 7/3 and not less than 1, and the third range is less than 1 and not less than 3/7.
The invention verifies the preset ratio range of the washing machine unwinding, and obtains the following conclusion: the ratio of the gravity R (the actual detection value R of the first gravity sensor is the same as the expression below) of the clothes on the inner barrel just after dehydration to the gravity R on the impeller (the actual detection value R of the second gravity sensor is the same as the expression below) is generally equal to or more than 7/3, at the moment, the clothes in the barrel are not unwound, most of the clothes are mutually wound in different degrees, and the distribution state is shown in figure 1; when the ratio of the gravity R on the inner barrel after unwinding to the gravity R on the impeller is 7/3 and R/R is more than or equal to 1, indicating that the clothes with light winding are unwound; when the ratio of the gravity R on the inner barrel after unwinding to the gravity R on the impeller is more than 1 and R/R is more than or equal to 3/7, representing that a small part of clothes in the barrel are still seriously wound; when the ratio of the gravity R on the inner barrel after the unwinding to the gravity R on the impeller is 3/7 & gt R/R, the result shows that the clothes in the barrel are basically unwound, and a user can directly take up the clothes for airing.
As a specific implementation manner, after the washing machine dehydration process is finished and an unwrapping command is received, analyzing a ratio range to which a ratio of load amounts detected by the first gravity sensor and the second gravity sensor belongs and selecting to execute a corresponding unwrapping action, specifically sequentially:
when R/R is more than or equal to 7/3, the washing machine controls the rotation angle A1 of the inner barrel, and the washing machine stops suddenly after the rotation speed is increased to V1;
when 7/3 is larger than R/R and is larger than or equal to 1, the washing machine controls the rotation angle A2 of the inner barrel, and the washing machine is stopped suddenly after the rotation speed is increased to V2;
when R/R is more than 1 and more than or equal to 3/7, the washing machine controls the rotation angle A3 of the inner barrel, and the washing machine is stopped suddenly after the rotation speed is increased to V3;
wherein A1 is more than A2 and less than A3, and V1 is more than V2 and less than V3.
Preferably, the rotation angle a2 is twice that of a1, and A3 is three times that of a 1; the rotational speed V2 is twice that of V1, and V3 is three times that of V1. Therefore, the rotation angle and the rotation speed are in positive linear correlation, the motor can keep the same acceleration, and the service life of the motor is prolonged.
As a specific scheme, after the dewatering process of the washing machine is finished and an unwrapping command is received, analyzing a ratio range to which a ratio of the load amounts detected by the first gravity sensor and the second gravity sensor belongs and selecting to perform a corresponding unwrapping action:
when R/R is more than or equal to 7/3, the washing machine controls the inner barrel to rotate for 60 degrees and the rotating speed is increased to 3R/min for sudden stop; the speed is used for leading the washing machine to unwind and wind lighter clothes, so that the abrasion is reduced;
when 7/3 is larger than R/R and is larger than or equal to 1, the washing machine controls the inner barrel to rotate for 120 degrees and the rotating speed is increased to 6R/min for sudden stop; at this point, the less-entangled clothes are already unwound, and moderate clothes are unwound at this speed;
when the speed is more than 1 and R/R is more than or equal to 3/7, the washing machine controls the inner drum to rotate 180 degrees and increases the rotating speed to 9R/min for sudden stop, and at the moment, a small part of clothes which are seriously wound are not unwound, and the serious clothes are unwound at the speed.
In the invention, the wearing and disentangling effects of clothes are integrated, and the rotating and sudden stopping speed of the inner barrel is correspondingly set to three speeds corresponding to three set ratio ranges: when the inner barrel rotates at 60 degrees, the rotating speed is increased to 3r/min, when the inner barrel rotates at 120 degrees, the rotating speed is increased to 6r/min, and when the inner barrel rotates at 180 degrees, the rotating speed is increased to 9 r/min; the advantages of such an arrangement are: the washing machine is firstly unwound from the lighter clothes and then unwound from the heavier clothes, so that the wear rate of the clothes can be effectively reduced.
In a further scheme, when 3/7 is larger than R/R, the washing machine finishes executing the unwinding program; the command may end when the drum underwear has substantially unwound.
Preferably, when the washing machine judges that 3/7 is larger than R/R for N1 times continuously, the washing machine finishes executing the unwinding program, and the good unwinding effect is ensured. In the present invention, N1 times may be specifically set according to information such as the model of the washing machine, for example, N1 times may be 8 times or 10 times or more.
In a further scheme, when the washing machine judges that R/R is more than or equal to 3/7 and N2 times continuously occur, the clothes are judged to be seriously wound, the execution of the unwinding program is finished, and a user is prompted to manually unwind.
After the washing machine continuously unwinds for N2 times, the unwinding effect is still not ideal, which indicates that the clothes are very seriously wound, the clothes cannot be unwound by the washing machine, the unwinding command needs to be finished, the user is prompted to manually unwind, and the meaningless waste of resources is avoided. In the present invention, N2 times may be specifically set according to information such as the model of the washing machine, for example, N2 times may be 8 times or 10 times or more.
In addition, the invention also provides a washing machine, which has the control method of any one scheme or the combination scheme; the washing machine comprises an inner barrel 1 and an impeller 2 arranged at the bottom of the inner barrel 1, wherein a first gravity sensor 3 is arranged on the peripheral wall of the inner barrel 1, and a second gravity sensor 4 is arranged on the impeller 2. The first gravity sensor 3 and the second gravity sensor 4 are electrically connected to a control device of the washing machine, respectively. The first gravity sensor and the second gravity sensor transmit detection values to the control device, and the control device controls the inner barrel to rotate and suddenly stop to unwind after analysis and judgment.
As a preferable scheme, the first gravity sensor 3 is disposed at the bottom of the peripheral wall of the inner tub 1, and the second gravity sensor 4 is disposed at the middle of the pulsator 2. So, can further increase the accuracy that detects, the distribution state of clothing in the bucket in more can accurate reflection reflects the winding degree of clothing, guarantees that the unwrapping reaches the best effect.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A control method of a washing machine comprises an inner barrel and an impeller, and is characterized in that a first gravity sensor is arranged on the peripheral wall of the inner barrel, a second gravity sensor is arranged on the impeller, and when the washing machine executes a de-winding program after dehydration, the de-winding working process is controlled according to the range of the ratio of the load amounts detected by the first gravity sensor and the second gravity sensor.
2. The control method of a washing machine as claimed in claim 1, wherein the washing machine presets a plurality of ratio ranges, determines the ratio range according to the ratio of the actual detection value R of the first gravity sensor to the actual detection value R of the second gravity sensor, and controls the inner tub to rotate and then suddenly stop for unwinding according to parameters corresponding to the ratio range.
3. The control method of a washing machine as claimed in claim 2, wherein the parameters corresponding to the ranges of the ratios include a rotation angle for controlling the inner tub to rotate abruptly stop and/or a rotation speed reached when the inner tub rotates abruptly stop;
preferably, after the washing machine performs the unwinding operation each time, the first gravity sensor and the second gravity sensor detect again, and the washing machine determines the ratio range again according to the ratio of the load amounts detected by the first gravity sensor and the second gravity sensor, and performs the unwinding operation according to the corresponding parameters.
4. The control method of a washing machine as claimed in claim 3, wherein the rotation angle of the inner tub rotation scram and/or the reached rotation speed corresponding to each ratio range in which the ratios are sequentially decreased are sequentially increased;
preferably, the rotation angle for controlling the inner tub to rotate to make sudden stop and the rotation speed are in positive linear correlation corresponding to each ratio range.
5. The control method of a washing machine as claimed in any one of claims 2 to 4, wherein the predetermined ratio range of the washing machine includes a first range, a second range and a third range in which the ratio is sequentially decreased, and the rotation angle of the inner tub for the sudden stop and the reached rotation speed corresponding to the first range, the second range and the third range are sequentially increased.
6. A control method of a washing machine as claimed in claim 5 wherein said first range is not less than 7/3, said second range is less than 7/3 and not less than 1, and said third range is less than 1 and not less than 3/7.
7. The control method of a washing machine as claimed in claim 6, wherein the washing machine performs a disentanglement process after dehydration:
when R/R is more than or equal to 7/3, the washing machine controls the rotation angle A1 of the inner barrel, and the washing machine stops suddenly after the rotation speed is increased to V1;
when 7/3 is larger than R/R and is larger than or equal to 1, the washing machine controls the rotation angle A2 of the inner barrel, and the rotation speed is increased to V2 and then the washing machine is suddenly stopped;
when R/R is more than 1 and more than or equal to 3/7, the washing machine controls the rotation angle A3 of the inner barrel, and the washing machine is stopped suddenly after the rotation speed is increased to V3;
wherein the rotation angle A2 is twice that of A1, and A3 is three times that of A1; the rotational speed V2 is twice that of V1, and V3 is three times that of V1.
8. The control method of a washing machine as claimed in claim 6, wherein when 3/7 > R/R, the washing machine ends the unwinding process;
preferably, the washing machine ends the unwinding process when the washing machine judges 3/7 > R/R to continuously occur N1 times.
9. The control method of a washing machine as claimed in claim 6, wherein when the washing machine judges that R/R ≧ 3/7 occurs continuously for N2 times, the laundry is judged to be heavily entangled, the unwrapping process is terminated, and the user is prompted to manually unwrap.
10. A washing machine having the control method according to any one of claims 1 to 9, characterized by comprising an inner tub and a pulsator, the inner tub being provided with a first gravity sensor on a circumferential wall thereof, the pulsator being provided with a second gravity sensor,
preferably, the first gravity sensor is disposed at a lower portion of a circumferential wall of the inner tub, and the second gravity sensor is disposed at a middle portion of the pulsator.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113463320A (en) * | 2021-07-30 | 2021-10-01 | 珠海格力电器股份有限公司 | Impeller, washing machine comprising impeller and control method |
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| CN112442832B (en) | 2023-07-18 |
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