CN112760917B - Eccentricity detection control device, control method and washing machine - Google Patents
Eccentricity detection control device, control method and washing machine Download PDFInfo
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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
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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
- D06F34/04—Signal transfer or data transmission arrangements
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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
- D06F2103/24—Spin speed; Drum movements
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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
- D06F2103/68—Operation mode; Program phase
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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
- 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
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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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/58—Indications or alarms to the control system or to the user
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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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/62—Stopping or disabling machine operation
Abstract
The present disclosure provides an eccentricity detection control device, a control method and a washing machine, the eccentricity detection control device including: the washing machine comprises a touch switch, wherein the touch switch is arranged on the inner wall of a box body of the washing machine, a barrel body of the washing machine can vibrate to be in contact with the touch switch in the operation process of the washing machine, and when the vibration eccentricity of the barrel body exceeds a set threshold value, the touch switch can control the washing machine to slow down to stop. According to the method and the device, the eccentricity detection precision and accuracy are effectively improved, the response time is long, the dehydration time is reduced, the weighing operation or the conversion from acceleration to displacement is not needed, the problems that in the process, large vibration cannot be timely controlled, the barrel collision or displacement occurs, meanwhile, the touch switch is low in price and can effectively inhibit the dehydration vibration of the washing machine, and the problems that the barrel collision and displacement occur due to the fact that the eccentric amount in the inner barrel is too large in the dehydration process of the washing machine, and the outer barrel is vibrated greatly are effectively solved.
Description
Technical Field
The disclosure relates to the technical field of air conditioners, in particular to an eccentricity detection control device, a control method and a washing machine.
Background
For the washing machine, because the rotating shafts of the inner and outer drums are in the horizontal direction, the clothes are unevenly distributed in the inner drum under the action of gravity. During the dehydration work, the inner tube rotates with higher speed continuously, the clothes cling to the inner tube wall to form eccentric mass, the inner tube generates forced vibration under the excitation of the eccentric mass, and the vibration is transmitted to the outer tube through the power input shaft, so that the whole inner tube and the whole outer tube generate the forced vibration together, and further the vibration of the whole machine of the washing machine is caused, and even the phenomena of barrel collision and displacement occur, thus not only influencing the service life of parts of the washing machine, but also directly reducing the user experience by the generated noise, and even harming the health of people. How to reduce the vibration noise in the working process of the washing machine is always the key to improve the quality and performance of the washing machine, and particularly, the vibration noise is more complicated along with the development of high-rotating-speed and high-capacity washing machines.
At present, the traditional method for detecting the eccentricity of the washing machine is based on an indirect detection method for detecting the rotating speed of a motor, the eccentricity is judged by detecting whether the rotating speed of a drum is stable in one circle, a plurality of specific rotating speed values are generally selected for comparison, if the selected rotating speed values are similar, the eccentric load is in an allowable range, the dewatering operation can be normally carried out, at the moment, the pulse period generated by a motor signal is approximate to a fixed value, but when the eccentricity exceeds the allowable range, the motor signals with different periods can change, and the eccentricity can be calculated according to the change. The indirect detection method can be judged only after calculation, and barrel collision and displacement are easy to occur in a calculation period; sometimes, the clothes are washed less, and the clothes are washed and dehydrated without eccentricity basically, but due to the control program, the eccentricity detection is still carried out for many times, so that the dehydration time is greatly increased. Therefore, the traditional indirect detection method has low precision and slow reaction and increases the dehydration time of the washing machine. Another eccentricity detection method is a direct detection method, in which a sensor is arranged on the outer drum of the washing machine to directly detect the vibration quantity of the outer drum, and has the disadvantages that the acceleration signal is required to be converted into a displacement time domain signal, and barreling or displacement may occur in the conversion time.
Patent No. CN111118820A discloses a method and device for detecting eccentricity of washing machine, which detects the fluctuation of several different drum speeds to obtain the corresponding eccentricity. The detection method belongs to an indirect detection method, detection errors are prone to occur, when the number of dehydrated clothes is small, eccentricity is small or does not exist, eccentricity detection is still needed, and dehydration time is prolonged. Patent No. CN110592885A discloses a control device and method for detecting eccentricity of washing machine and washing machine thereof, the technical solution is to arrange an acceleration sensor on the outer drum of the washing machine, convert the measured acceleration signal into a displacement threshold signal, and determine whether the drum eccentricity exceeds the allowable range by using the displacement threshold signal. The detection method belongs to a direct detection method, and can feed back a command to the control panel after the conversion from acceleration to displacement is carried out, so that barrel collision or displacement is easy to occur in the process, and the price of the acceleration sensor is high.
In the prior art, in the dewatering process of the washing machine, the problem of barrel collision and displacement is caused due to the fact that the inner eccentric amount of the inner barrel is too large, the outer barrel vibrates greatly, the traditional eccentric indirect detection method is low in precision and slow in reaction, dewatering time of the washing machine is prolonged, the eccentric direct detection method directly detects the outer barrel vibration amount by arranging a sensor on the outer barrel of the washing machine, the technical problems that acceleration signals need to be converted into displacement time domain signals, barrel loading or displacement can occur in conversion time and the like exist, and therefore the eccentric detection control device, the control method and the washing machine are researched and designed.
BRIEF SUMMARY OF THE PRESENT DISCLOSURE
Therefore, the technical problem to be solved by the present disclosure is to overcome the defects that the eccentricity detection of the washing machine in the prior art is either low in precision, slow in response and increased in the dewatering time of the washing machine, or the acceleration signal is required to be converted into the displacement time domain signal, and the barreling or the displacement may occur in the conversion time, so as to provide an eccentricity detection control device, a control method and a washing machine.
In order to solve the above problem, the present disclosure provides an eccentricity detection control device, including:
the washing machine comprises a touch switch, wherein the touch switch is arranged on the inner wall of a box body of the washing machine, a barrel body of the washing machine can vibrate to be in contact with the touch switch in the operation process of the washing machine, and when the vibration eccentricity of the barrel body exceeds a set threshold value, the touch switch can control the washing machine to slow down to stop.
In some embodiments, the touch switch may output different inductance values according to a vibration amount of the drum.
In some embodiments, the touch switch includes a detecting body, a connecting portion, a magnet, and an electromagnetic coil, one end of the connecting portion is fixed, and the other end of the connecting portion is connected to the detecting body, the detecting body can be brought into contact with the barrel during vibration of the barrel and is driven to move, one end of the magnet is connected to the connecting portion and can move along with movement of the connecting portion, and the magnet can be inserted into the electromagnetic coil during movement, so that inductance of the electromagnetic coil changes.
In some embodiments, one end of the connecting part is fixed on the inner wall of the box body; the probe body is arranged opposite to the cylinder body; the electromagnetic coil is disposed opposite to the magnet.
In some embodiments, the washing machine further comprises a controller, the controller can detect the electromagnetic quantity in the electromagnetic coil and sense the inductance change through the change of the electromagnetic quantity, when the insertion amount of the magnet into the electromagnetic coil exceeds a preset depth, the electromagnetic quantity exceeds a preset electromagnetic quantity, and the controller controls the circuit to be switched on and controls the washing machine to be decelerated to stop.
In some embodiments, one end of the connecting portion is connected to an inner wall of the case by a living hinge; and/or the eccentric touch switch further comprises a bracket, and the electromagnetic coil is fixedly arranged on the bracket.
In some embodiments, when a bracket is included, an elastic member is further provided between the connection portion and the bracket, and the elastic member applies an opposite elastic force to the connection portion when the magnet is inserted into the electromagnetic coil.
In some embodiments, the resilient member is a spring; and/or the bracket is fixedly arranged on the inner wall of the box body.
The present disclosure also provides a control method of the eccentricity detection control apparatus as set forth in any one of the above, including:
a detection step for detecting the inner drum rotating speed of the washing machine and/or the control program of the washing machine;
a judging step for judging whether the inner drum of the washing machine enters a dehydration stage of the speed-up operation;
and the control step is used for controlling the washing machine to decelerate to stop through the touch switch when the vibration eccentricity of the cylinder body exceeds a set threshold value after the inner cylinder enters the dehydration stage of the speed-up operation.
In some embodiments, when the touch switch includes a probe body, a connecting portion, a magnet, and an electromagnetic coil, the controlling step is further configured to detect and control a change in eccentricity of the cylinder body according to a change in inductance caused by a relative movement of the magnet and the electromagnetic coil in the touch switch.
In some embodiments, the determining step is further configured to determine whether the touch switch is closed;
the control step is also used for controlling the motor of the washing machine to decelerate to stop when the touch switch is closed; when the touch switch is not closed, the washing machine continuously operates until the dehydration is finished.
In some embodiments, the detecting step is further configured to detect a control program of the washing machine before the drum of the washing machine enters the spin-drying stage of the accelerated operation;
the judging step is also used for judging whether the washing machine enters a dehydration operation program;
and the control step is also used for controlling the washing machine to shake and disperse the clothes when the washing machine enters a dehydration operation program.
In some embodiments, the detecting step is further configured to detect a number of times the washing machine performs a shaking operation;
the judging step is also used for judging the size relation between the times of the shaking and scattering operation and the preset times;
and the control step is also used for controlling the inner cylinder of the washing machine to enter a dehydration stage of the speed-up operation when the shaking-up times are less than or equal to the preset times.
In some embodiments, the controlling step is further configured to control to open the inner drum of the washing machine to reduce the laundry amount when the shaking times is greater than the preset times, and control to return to the step of the washing machine to enter the dewatering operation program.
In some embodiments, the controlling step is further configured to, when the shaking times is greater than the preset times, first control the controller to alarm, and then control the inner drum of the washing machine to be opened, so as to reduce the laundry input amount; and/or the presence of a gas in the gas,
wherein the preset number of times is 5.
The present disclosure also provides a washing machine including the eccentricity detection control apparatus of any one of the preceding claims.
The eccentricity detection control device, the control method and the washing machine provided by the disclosure have the following beneficial effects:
1. the utility model arranges the touch switch on the inner wall of the washing machine box body, and the washing machine barrel can vibrate to contact with the touch switch in the operation process of the washing machine, when the vibration eccentricity of the drum exceeds a set threshold value, the washing machine is controlled to decelerate to stop by touching the switch, which is different from the existing direct detection method and indirect detection method, effectively improves the eccentricity detection precision and accuracy, and the response time is long, the dehydration time is reduced, the weighing operation or the conversion from acceleration to displacement is not needed, the problems of barrel collision or displacement caused by the fact that the large vibration cannot be controlled in time in the process are avoided, meanwhile, the touch switch has low price, can effectively inhibit the dehydration vibration of the washing machine, effectively solves the problem that the washing machine has poor water-removing effect in the dehydration process, the inner eccentricity of the inner barrel is too large, so that the outer barrel vibrates greatly, and the problems of barrel collision and displacement occur;
2. according to the eccentricity detection device, the touch switch is adopted for eccentricity detection, based on the working principle of the touch switch, the magnet is arranged on the outer arm of the touch switch, the electromagnetic coil is fixed on the support, the magnetic flux in the electromagnetic coil is changed through the relative motion of the magnet and the electromagnetic coil, the inductance in the electromagnetic coil is correspondingly changed, and the control panel can detect the change of the inductance in the electromagnetic coil to sense eccentricity. In addition, the touch switch is closed when reaching a stroke, a closed passage can be formed, and an electric signal can be transmitted to the control panel, so that the motor is controlled to decelerate to stop, the distribution of clothes in the inner barrel is adjusted, and the barrel collision is avoided. The problem of whether the eccentricity exceeds an acceptable range or not is judged through the change of the rotating speed of the motor in the traditional eccentricity detection, the detection result is detected indirectly and inaccurate is solved, and meanwhile, the problem that when the number of washed clothes is small, the eccentricity is small or does not exist, the eccentricity is still detected due to the requirement of a control program, and the dehydration time is too long is solved. The problem that the barrel is easily collided within the time due to the fact that an acceleration sensor is used for detecting in a direct detection method, the acceleration sensor is high in price, and meanwhile, the conversion process from acceleration to displacement is needed.
Drawings
FIG. 1 is a schematic view of the eccentric detection control device of the present disclosure in combination with a washing machine outer tub;
FIG. 2 is a schematic structural diagram of a touch switch of the present disclosure;
fig. 3 is a control flowchart of the eccentricity detection control of the present disclosure.
The reference numerals are represented as:
1. a washing machine spring; 2. a washing machine box body; 3. an outer tub of a washing machine; 4. a touch switch; 5. a probe body; 6. a connecting portion; 7. an elastic member; 8. a living hinge; 9. a connecting wire; 10. a magnet; 11. an electromagnetic coil; 12. and (4) a bracket.
Detailed Description
As shown in fig. 1-3, the present disclosure provides an eccentricity detection control apparatus, including:
the washing machine comprises a touch switch 4, wherein the touch switch 4 is arranged on the inner wall of a box body of the washing machine, a barrel of the washing machine can vibrate to be in contact with the touch switch 4 in the operation process of the washing machine, and when the vibration eccentricity of the barrel exceeds a set threshold value, the touch switch 4 can control the washing machine to slow down to stop.
The utility model arranges the touch switch on the inner wall of the washing machine box body, and the washing machine barrel can vibrate to contact with the touch switch in the operation process of the washing machine, when the vibration eccentricity of the drum exceeds a set threshold value, the washing machine is controlled to decelerate to stop by touching the switch, which is different from the existing direct detection method and indirect detection method, effectively improves the eccentricity detection precision and accuracy, and the response time is long, the dehydration time is reduced, the weighing operation or the conversion from acceleration to displacement is not needed, the problems of barrel collision or displacement caused by the fact that the large vibration cannot be controlled in time in the process are avoided, meanwhile, the touch switch has low price, can effectively inhibit the dehydration vibration of the washing machine, effectively solves the problem that the washing machine has poor water-removing effect in the dehydration process, the inner eccentric amount of the inner barrel is too large, so that the outer barrel vibrates greatly, and further the problems of barrel collision and displacement occur.
In the dehydration process of the washing machine, because the clothes are attached to the inner wall of the inner barrel, the inner barrel is locally eccentric, when the washing machine washes too many clothes and the clothes are unevenly distributed, the inner barrel can generate larger centrifugal force, then the whole machine is driven to vibrate, various noises are generated, and the use experience of a user is influenced. The invention starts the eccentric detection of the washing machine, adopts a detection device which is a touch switch, judges whether the eccentric amount exceeds a set threshold value or not by closing the touch switch, and if the eccentric amount exceeds the set threshold value, the clothes are shaken off (the shaking off action is carried out by the inner drum of the washing machine to rotate at low speed in a clockwise direction and a counterclockwise direction under different beats so as to promote the position of the clothes in the drum and the winding condition to change.) and the clothes distribution is readjusted to reduce the eccentric amount of the inner drum, thereby improving the vibration and noise level of the whole washing machine.
In some embodiments, the touch switch 4 can output different inductance values according to the vibration amount of the cylinder. The touch switch is a further preferable structure of the touch switch, different inductance values can be output through different vibration values of the cylinder, and the amplitude of the real-time cylinder vibration can be judged so as to judge whether the vibration meets the requirement.
In some embodiments, the tact switch 4 includes a probe 5, a connecting portion 6, a magnet 10, and an electromagnetic coil 11, one end of the connecting portion 6 is fixed, and the other end is connected to the probe 5, the probe 5 can be brought into contact with the cylinder to be moved during the vibration of the cylinder, one end of the magnet 10 is connected to the connecting portion 6 and can move along with the movement of the connecting portion 6, and the magnet 10 can be inserted into the electromagnetic coil 11 during the movement, so that the inductance of the electromagnetic coil 11 changes.
According to the eccentricity detection device, the touch switch is adopted for eccentricity detection, based on the working principle of the touch switch, the magnet is arranged on the outer arm of the touch switch, the electromagnetic coil is fixed on the support, the magnetic flux in the electromagnetic coil is changed through the relative motion of the magnet and the electromagnetic coil, the inductance in the electromagnetic coil is correspondingly changed, and the control panel can detect the change of the inductance in the electromagnetic coil to sense eccentricity. In addition, the touch switch is closed when reaching a stroke, a closed passage can be formed, and an electric signal can be transmitted to the control panel, so that the motor is controlled to decelerate to stop, the distribution of clothes in the inner barrel is adjusted, and the barrel collision is avoided. The problem of whether the eccentricity exceeds an acceptable range or not is judged through the change of the rotating speed of the motor in the traditional eccentricity detection, the detection result is detected indirectly and inaccurate is solved, and meanwhile, the problem that when the number of washed clothes is small, the eccentricity is small or does not exist, the eccentricity is still detected due to the requirement of a control program, and the dehydration time is too long is solved. The problem that the barrel is easily collided within the time due to the fact that an acceleration sensor is used for detecting in a direct detection method, the acceleration sensor is high in price, and meanwhile, the conversion process from acceleration to displacement is needed.
In some embodiments, one end of the connecting portion 6 is fixed to the inner wall of the case; the probe body 5 is arranged opposite to the cylinder body; the electromagnetic coil 11 is disposed opposite to the magnet 10. The structure is a further preferable structure form of the connecting part, the connecting part is preferably a structure form of an extension arm touching the switch outer arm, one end of the connecting part is fixed on the inner wall of the box body, the other end of the connecting part extends out of the cylinder body, and a probe is fixedly arranged on the extending end of the connecting part; the detection body is arranged opposite to the cylinder body, and can be in contact with the detection body in the vibration process of the cylinder body so as to drive the detection body and the connecting part to move, finally the magnet is driven to move in the electromagnetic coil to generate inductance values with different sizes, and the eccentric amount of the cylinder body vibration is judged; the electromagnetic coil and the magnet are arranged oppositely, so that the magnet can move in the electromagnetic coil, inductance values with different sizes are generated along with the vibration amplitude of the cylinder body, and an electric signal is output.
In some embodiments, the washing machine further comprises a controller, the controller can detect the electromagnetic quantity in the electromagnetic coil 11, sense the inductance change through the change of the electromagnetic quantity, and when the insertion amount of the magnet 10 into the electromagnetic coil 11 exceeds the preset depth, the electromagnetic quantity exceeds the preset electromagnetic quantity, and the controller controls the circuit to be switched on and controls the washing machine to be decelerated to stop. According to the controller, the electromagnetic quantity inside the electromagnetic coil is effectively detected through the structure of the controller, so that the inductance between the magnet and the electromagnetic coil is effectively obtained, when the electromagnetic quantity exceeds the preset electromagnetic quantity, the vibration eccentricity of the drum body exceeds the set threshold value, and therefore the washing machine is controlled to be decelerated to stop, and the conditions of drum collision and the like are prevented.
In some embodiments, one end of the connecting portion 6 is connected to the inner wall of the case by a living hinge 8; and/or, the eccentric touch switch further comprises a bracket 12, and the electromagnetic coil 11 is fixedly arranged on the bracket 12. The free end of the connecting part is connected with the detecting body, and the connecting part swings when the detecting body is driven by the barrel to move; the bracket is capable of effectively fixing the electromagnetic coil, and the bracket is preferably fixed to the inner wall of the case.
In some embodiments, when the bracket 12 is included, an elastic member 7 is further connected between the connection part 6 and the bracket 12, and the elastic member 7 applies an opposite elastic force to the connection part 6 when the magnet 10 is inserted into the electromagnetic coil 11. According to the electromagnetic coil, the elastic part is arranged between the connecting part and the support in a connecting mode, the elastic part can apply elastic force to the connecting part in the direction opposite to the moving direction, when the detecting body is not in contact with the cylinder body, the connecting part is pushed by the elastic part, the magnet is located outside the electromagnetic coil, and the fact that no inductance exists at the moment is guaranteed.
In some embodiments, the elastic member 7 is a spring; and/or the bracket 12 is fixedly arranged on the inner wall of the box body. This is the preferred form of construction of the resilient member of the present disclosure, and the preferred attachment location of the support, so that the probe and attachment portion are attached to the inside wall of the housing, with the other end projecting toward the barrel in a free end, capable of making contact with the barrel to generate an inductance.
The present disclosure also provides a control method of the eccentricity detection control apparatus as set forth in any one of the above, including:
a detection step for detecting the inner drum rotating speed of the washing machine and/or the control program of the washing machine;
a judging step for judging whether the inner drum of the washing machine enters a dehydration stage of the speed-up operation;
and the control step is used for controlling the washing machine to decelerate to stop through the touch switch when the vibration eccentricity of the cylinder body exceeds a set threshold value after the inner cylinder enters the dehydration stage of the speed-up operation.
The washing machine is controlled to slow down to stop through the touch switch after the inner barrel enters a dewatering stage of speed-up operation and when the vibration eccentricity of the barrel exceeds a set threshold value, the washing machine is distinguished from the existing direct detection method and indirect detection method, the eccentricity detection precision and accuracy are effectively improved, the response time is long, the dewatering time is reduced, the weighing operation or the conversion from acceleration to displacement is not needed, the problem that the barrel is collided or displaced due to large vibration in the process and cannot be controlled in time is avoided, meanwhile, the touch switch is low in price, the dewatering vibration of the washing machine can be effectively inhibited, and the problems that the eccentricity of the inner barrel is too large, the outer barrel vibrates greatly and the barrel is collided and displaced in the dewatering process of the washing machine are effectively solved.
In some embodiments, when the tact switch 4 comprises the probe body 5, the connecting portion 6, the magnet 10 and the electromagnetic coil 11, the controlling step is further configured to detect and control the change of the eccentricity amount of the cylinder body according to the change of the inductance amount caused by the relative movement of the magnet and the electromagnetic coil in the tact switch.
The eccentric value of the washing machine is detected based on the working principle of a touch switch and the inductance value change caused by the relative motion of a magnet fixed on an outer arm of the touch switch and an electromagnetic coil fixed on a bracket. In addition, the touch switch is closed when reaching the stroke, and the control panel can receive an electric signal and then control the motor to decelerate to stop, thereby directly preventing the occurrence of the problem of barrel collision. Compared with the traditional indirect detection method, the method is more direct and accurate, reduces the time consumed in the process of weighing the clothes, solves the problem that the detection is still needed when the eccentric load is small, and shortens the dehydration time; compared with the acceleration sensor adopted in the prior patent, the washing machine eccentricity detection device has the advantages that the structure of the touch switch is simple, the price is low, and the conversion time from acceleration to displacement is not available. The detection device and the method thereof effectively improve the operation reliability of the washing machine, avoid the generation of drum collision or displacement, improve the washing efficiency and prolong the service life of the washing machine. In addition, the excitation of the cylinder to the box body can be relieved by the spring and the rubber block on the touch switch.
In some embodiments, the determining step is further configured to determine whether the touch switch is closed;
the control step is also used for controlling the motor of the washing machine to decelerate to stop when the touch switch is closed; when the touch switch is not closed, the washing machine continuously operates until the dehydration is finished.
The eccentric detection control method is an optimal control step of the eccentric detection control method, namely when the touch switch is closed, the vibration eccentric amount of the barrel body is larger and exceeds a set threshold, if the microphone body which is not adjusted collides with the box body, the washing machine is damaged, and therefore the motor of the washing machine is controlled to be decelerated to stop at the moment; when the touch switch is not closed, the vibration eccentricity of the barrel is in an allowable range, and the washing machine is controlled to continuously operate until the dehydration is finished, so that the safe and reliable operation of the washing machine can be ensured.
In some embodiments, the detecting step is further configured to detect a control program of the washing machine before the drum of the washing machine enters the spin-drying stage of the accelerated operation;
the judging step is also used for judging whether the washing machine enters a dehydration operation program;
and the control step is also used for controlling the washing machine to shake and disperse the clothes when the washing machine enters a dehydration operation program.
This is a further preferred step of the eccentricity detection control method of the present disclosure, and further includes a step for shaking up the laundry between the spin-drying stages when the inner drum enters the run-up operation, so that the weight of the laundry in the drum can be more uniform, and the eccentricity amount of the laundry in the drum can be effectively reduced.
In some embodiments, the detecting step is further configured to detect a number of times the washing machine performs a shaking operation;
the judging step is also used for judging the size relation between the times of the shaking and scattering operation and the preset times;
and the control step is also used for controlling the inner cylinder of the washing machine to enter a dehydration stage of the speed-up operation when the shaking-up times are less than or equal to the preset times.
When the shaking times are less than or equal to the preset times, the method shows that the amount of clothes in the drum is less or the requirement of washing can be met, the washing machine is controlled to enter the speed-up dehydration stage, and the conditions that the drum is collided due to overlarge eccentric amount in the dehydration stage can be effectively avoided as far as possible.
In some embodiments, the controlling step is further configured to control to open the inner drum of the washing machine to reduce the laundry amount when the shaking times is greater than the preset times, and control to return to the step of the washing machine to enter the dewatering operation program. When the shaking-up times is larger than the preset times, the clothes in the drum are still more, the clothes cannot be shaken up through the inner drum of the washing machine, and the drum is hit by the serious excessive eccentricity if the speed-up dewatering process is started.
In some embodiments, the controlling step is further configured to, when the shaking times is greater than the preset times, first control the controller to alarm, and then control the inner drum of the washing machine to be opened, so as to reduce the laundry input amount; and/or the presence of a gas in the gas,
wherein the preset number of times is 5.
When the shaking and scattering times are larger than the preset times, the user can be reminded of reducing the putting amount of the clothes through the alarming step, otherwise, the phenomenon that the eccentric amount is too large and the barrel is collided may exist, and the shaking and scattering times are preferably 5.
The present disclosure also provides a washing machine including the eccentricity detection control apparatus of any one of the preceding claims.
FIG. 1 is a schematic diagram of an arrangement of measuring points for detecting eccentricity of an outer drum of a washing machine, and the specific implementation manner of the eccentricity detection of the washing machine is as follows: in the clothes dewatering process, the inner drum of the washing machine continuously rotates in an accelerated manner under the driving of the motor, clothes cling to the inner drum wall to form eccentric mass, the inner drum generates forced vibration under the excitation of the eccentric mass, and the vibration is transmitted to the outer drum through the power input shaft, so that the vibration of the outer drum of the washing machine is caused. The outer arm of the touch switch fixed on the box body can generate position change due to the vibration of the cylinder body, so that the magnet and the electromagnetic coil move relatively, and the inductance change in the electromagnetic coil is used for sensing the eccentric change. In addition, the touch switch has the effects that when the eccentricity of the washing machine exceeds the stroke of the touch switch, the touch switch is closed, the circuit is switched on, the control panel can receive an electric signal fed back by the touch switch, the drum of the washing machine can be decelerated to stop, clothes are shaken and scattered, the inner drum of the washing machine continuously rotates at an accelerated speed again, and if the touch switch is not closed, the dehydration process can be continuously completed. Generally speaking, the invention judges whether the eccentricity reaches the set threshold value according to whether the touch switch is closed, and then the clothes are shaken again, thereby restraining the overlarge eccentric load of the washing machine. It should be noted that: the touch switches 4 are arranged on the washing machine box body and connected through glue or fixing bolts, the 6 touch switches are respectively arranged on the surface of the box body nearest to the outer barrel body from front to back, from left to right, from top to bottom, and the selection of the measuring point positions of the washing machines of different machine types can be determined according to the vibration test result in earlier evaluation, and the measuring point with larger vibration quantity is selected. In addition, the side of the touch switch detecting body close to the outer barrel is made of rubber materials, the barrel is prevented from being damaged by multiple times of touch, and meanwhile, the spring and the rubber block on the touch switch have certain vibration damping effect.
Fig. 2 is a schematic structural diagram of a touch switch, and the device mainly includes a detection body 5 of the touch switch, an outer arm (connecting portion 6) of the touch switch, a spring (elastic component 7), a living hinge 8, a connecting wire 9, a magnet 10, an electromagnetic coil 11, and a bracket 12 of the touch switch. The touch switch is fixed on the surface of the box body through glue or a fixing bolt, the position of a touch switch detector is changed under the action of external force, a magnet on the touch switch and the electromagnetic coil move relatively, the inductance in the electromagnetic coil is changed, and the controller senses the inductance change by detecting the electromagnetic quantity change in the electromagnetic coil (the eccentricity of the washing machine is reflected through the inductance change, so that the eccentricity is detected. In addition, when the urceolus vibration volume is big enough, touch the switch and can reach the stroke closure, the circuit switch-on (the washing machine inside and outside section of thick bamboo subassembly can be because of the difference of a section of thick bamboo underwear thing weight and rotational speed in carrying out clothing washing and dehydration process, produce different vibration volumes in space, and touch the switch and arrange on the washing machine box, touch the switch and survey the outer arm and can appear contacting because of the vibration of inside and outside section of thick bamboo and urceolus. When the eccentricity of the washing machine is small or no eccentricity occurs, the elastic damping of the elastic component 7 can ensure that the touch switch is in an open state at any moment, so that the inner drum of the washing machine is accelerated to a set rotating speed until the dehydration is finished. It should be noted that: the stroke of the detection body of the touch switch of different measuring points can be determined according to the vibration test result of the drum body in the previous evaluation of the washing machine of the model, and the touch switch is closed before the drum collision or displacement of the washing machine occurs.
In summary, the following steps: the eccentricity of the washing machine is directly detected by using the touch switch, if the eccentricity exceeds a set threshold value, the washing machine is decelerated to stop, clothes are shaken up again, and the distribution of the clothes in the inner barrel is adjusted, so that the problems of large eccentricity of the washing machine and barrel collision or displacement are effectively solved, meanwhile, the magnet and the electromagnetic coil move relatively, and the inductance change in the electromagnetic coil can be used for sensing the eccentricity change. The touch switch adopted by the invention has simple structure and low cost, and avoids the problem of overlong time when the acceleration sensor is adopted to detect the eccentricity and the measured acceleration is converted into a displacement value. In addition, the problem that the eccentricity is indirectly detected by using the change of the rotating speed of the motor, the precision is not high, and the dehydration time is overlong because the eccentricity is very small or the detection is not needed is solved.
The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure. The foregoing is only a preferred embodiment of the present disclosure, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present disclosure, and these modifications and variations should also be regarded as the protection scope of the present disclosure.
Claims (11)
1. An eccentricity detection control device characterized in that: the method comprises the following steps:
the washing machine comprises a touch switch (4), wherein the touch switch (4) is arranged on the inner wall of a box body of the washing machine, a barrel body of the washing machine can vibrate to be in contact with the touch switch (4) in the operation process of the washing machine, and when the vibration eccentricity of the barrel body exceeds a set threshold value, the touch switch (4) can control the washing machine to decelerate to stop; the touch switch (4) can output different inductance values according to different vibration quantities of the barrel;
the touch switch (4) comprises a detection body (5), a connecting part (6), a magnet (10) and an electromagnetic coil (11), one end of the connecting part (6) is fixed, the other end of the connecting part is connected with the detection body (5), the detection body (5) can be in contact with the cylinder body in the vibration process of the cylinder body and driven to move, one end of the magnet (10) is connected to the connecting part (6) and can move along with the movement of the connecting part (6), and the magnet (10) can be inserted into the electromagnetic coil (11) in the movement process so that the inductance of the electromagnetic coil (11) changes;
one end of the connecting part (6) is fixed on the inner wall of the box body; the probe body (5) is arranged opposite to the cylinder body; the electromagnetic coil (11) is arranged opposite to the magnet (10);
one end of the connecting part (6) is connected to the inner wall of the box body through a movable hinge (8); the touch switch further comprises a bracket (12), and the electromagnetic coil (11) is fixedly arranged on the bracket (12); an elastic part (7) is further connected and arranged between the connecting part (6) and the bracket (12), and when the magnet (10) is inserted into the electromagnetic coil (11), the elastic part (7) exerts opposite elastic force on the connecting part (6); the elastic component (7) and the magnet (10) are positioned on the same side of the connecting part (6).
2. The eccentricity detection control apparatus according to claim 1, wherein:
the washing machine further comprises a controller, wherein the controller can detect the electromagnetic quantity in the electromagnetic coil (11), sense the inductance value change through the change of the electromagnetic quantity, and control a circuit to be switched on and control the washing machine to be decelerated to stop when the insertion quantity of the magnet (10) into the electromagnetic coil (11) exceeds a preset depth and exceeds a preset electromagnetic quantity.
3. The eccentricity detection control apparatus according to claim 1, wherein:
the elastic component (7) is a spring; and/or the bracket (12) is fixedly arranged on the inner wall of the box body.
4. A control method of the eccentricity detection control apparatus according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:
a detection step for detecting the inner drum rotating speed of the washing machine and/or the control program of the washing machine;
a judging step for judging whether the inner drum of the washing machine enters a dehydration stage of the speed-up operation;
and the control step is used for controlling the washing machine to decelerate to stop through the touch switch when the vibration eccentricity of the cylinder body exceeds a set threshold value after the inner cylinder enters the dehydration stage of the speed-up operation.
5. The control method according to claim 4, characterized in that:
when the touch switch (4) comprises a probe body (5), a connecting part (6), a magnet (10) and an electromagnetic coil (11), the control step is also used for detecting and controlling the eccentric amount change of the cylinder body according to the inductance change caused by the relative motion of the magnet and the electromagnetic coil in the touch switch.
6. The control method according to claim 4 or 5, characterized in that:
the judging step is also used for judging whether the touch switch is closed or not;
the control step is also used for controlling the motor of the washing machine to decelerate to stop when the touch switch is closed; when the touch switch is not closed, the washing machine continuously operates until the dehydration is finished.
7. The control method according to claim 4 or 5, characterized in that:
the detection step is also used for detecting the control program of the washing machine before the inner drum of the washing machine enters the dehydration stage of the speed-up operation;
the judging step is also used for judging whether the washing machine enters a dehydration operation program;
and the control step is also used for controlling the washing machine to shake and disperse the clothes when the washing machine enters a dehydration operation program.
8. The control method according to claim 7, characterized in that:
the detecting step is also used for detecting the times of the washing machine for shaking operation;
the judging step is also used for judging the size relation between the times of the shaking and scattering operation and the preset times;
and the control step is also used for controlling the inner cylinder of the washing machine to enter a dehydration stage of the speed-up operation when the shaking-up times are less than or equal to the preset times.
9. The control method according to claim 8, characterized in that:
and the control step is also used for controlling to open the inner drum of the washing machine when the shaking times is larger than the preset times, reducing the putting amount of the clothes and controlling to return to the washing machine to enter a dehydration operation procedure.
10. The control method according to claim 9, characterized in that:
the control step is also used for controlling the controller to alarm when the shaking and scattering times are larger than the preset times, and then controlling the inner drum of the washing machine to be opened so as to reduce the putting amount of clothes; and/or the presence of a gas in the gas,
wherein the preset number of times is 5.
11. A washing machine characterized by:
comprising the eccentricity detection control apparatus as set forth in any one of claims 1 to 3.
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| CN106757984A (en) * | 2016-12-30 | 2017-05-31 | 青岛云路新能源科技有限公司 | Bucket position sensor and the integrated detector of water level and bucket position comprising the bucket position sensor |
| CN108708135A (en) * | 2018-04-11 | 2018-10-26 | 青岛海尔洗衣机有限公司 | Control method of washing and washing machine |
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| CN105624972B (en) * | 2016-03-28 | 2017-11-07 | 惠而浦（中国）股份有限公司 | Eccentric dehydration controlling method for drum washing machine is judged based on 3D displacement transducers |
| CN109023844A (en) * | 2018-08-13 | 2018-12-18 | 珠海格力电器股份有限公司 | Outer cylinder anti-collision structure, washing machine and outer cylinder anticollision control method |
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| CN106757984A (en) * | 2016-12-30 | 2017-05-31 | 青岛云路新能源科技有限公司 | Bucket position sensor and the integrated detector of water level and bucket position comprising the bucket position sensor |
| CN108708135A (en) * | 2018-04-11 | 2018-10-26 | 青岛海尔洗衣机有限公司 | Control method of washing and washing machine |
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