CN111962260B - Washing machine and balance control method thereof - Google Patents
Washing machine and balance control method thereof Download PDFInfo
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- CN111962260B CN111962260B CN201910420522.XA CN201910420522A CN111962260B CN 111962260 B CN111962260 B CN 111962260B CN 201910420522 A CN201910420522 A CN 201910420522A CN 111962260 B CN111962260 B CN 111962260B
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- 238000005406 washing Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 230000001133 acceleration Effects 0.000 claims description 44
- 238000006073 displacement reaction Methods 0.000 claims description 20
- 238000013101 initial test Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 2
- 230000018044 dehydration Effects 0.000 abstract description 15
- 208000005156 Dehydration Diseases 0.000 abstract description 13
- 238000006297 dehydration reaction Methods 0.000 abstract description 13
- 230000009467 reduction Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 101150114468 TUB1 gene Proteins 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/26—Casings; Tubs
- D06F37/265—Counterweights mounted to the tub; Mountings therefor
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
The invention discloses a washing machine and a balance control method thereof, wherein the washing machine comprises a roller, a balance ring, a balance block, a controller, a detection device and an axial movement device, wherein the balance ring is arranged at the outer side of the roller, and the balance block is arranged on the balance ring in a running way; the detection device is arranged on the periphery of the roller and used for detecting the eccentric position information and the eccentric amount information; the axial movement device is arranged outside the roller, and the balance ring is movably connected to the axial movement device so as to realize the axial movement of the balance ring along the roller; the controller receives the eccentric position information and the eccentric amount information detected by the detection device in the dehydration stage, controls the balance ring to move to the eccentric position along the axial movement device and then controls the balance block to move so as to balance the eccentric amount, so that the balance control of the washing machine is realized, the vibration of the drum is greatly reduced, and the technical problem that the vibration noise is generated due to uneven distribution in the dehydration stage of the existing washing machine is fundamentally solved.
Description
Technical Field
The invention belongs to the technical field of washing machines, and particularly relates to a washing machine and a balance control method thereof.
Background
The vibration noise is one of the important performance indexes of the washing machine and is always a problem solved by various large manufacturers in the household appliance industry, through the iterative development of vibration reduction technologies in recent years, the vibration reduction system of the washing machine is more and more mature, the difficulty of vibration reduction and noise reduction is more and more increased, and the problem of the vibration noise is not completely solved.
The user research shows that the vibration noise problem of the washing machine generally occurs in the dehydration stage, the fundamental reason is that the clothing is unevenly distributed in the washing process to generate large mass eccentricity, and the eccentricity generates large inertia force after the dehydration reaches a certain rotating speed, so that the whole machine system generates large swing vibration along the front-back, up-down and left-right directions after passing through the dehydration critical rotating speed and even reaching a high speed stage. The large vibration amplitude of the machine is closely related to the industrial problems of heavy weight of the whole machine, large safety distance between the inner barrel and the outer barrel, large safety distance between the outer barrel and the box body, large dehydration noise and the like.
At present, the vibration control method on the washing machine generally adopts passive forms such as a damper, a liquid balance ring and the like, can weaken the vibration level of the washing machine to a certain extent, but cannot fundamentally solve the vibration problem, and the complaint of users about large vibration noise of the washing machine still exists.
Disclosure of Invention
The application provides a washing machine and a balance control method thereof, which fundamentally solve the technical problem that the existing washing machine generates vibration noise due to uneven distribution in the dehydration stage.
In order to solve the technical problems, the application adopts the following technical scheme:
a washing machine is provided, which comprises a balancing ring, a balancing block and a controller, wherein the balancing ring is arranged on a roller, and the balancing block is operably arranged on the balancing ring; the device also comprises a detection device and an axial movement device; the detection device is arranged on the periphery of the roller and is used for detecting the information of the eccentric position and the eccentric amount; the axial movement device is arranged in parallel to the central shaft of the roller, and the balance ring is movably connected to the axial movement device so as to realize the axial movement of the balance ring along the roller; the controller is used for receiving the eccentric position information and the eccentric amount information detected by the detection device, controlling the balance ring to move to an eccentric position along the axial motion device, and controlling the balance block to move to balance the eccentric amount.
Further, the detection device comprises an eccentric position sensor and an acceleration sensor which are arranged on the wall of the outer barrel of the washing machine, and the eccentric position sensor and the acceleration sensor are coaxially arranged in parallel to the central axis of the outer barrel of the washing machine.
Furthermore, the number of the eccentric position sensors is one, the number of the acceleration sensors is two, the two acceleration sensors are respectively installed on the front half part and the rear half part of the outer barrel of the washing machine, and the eccentric position sensors are installed between the two acceleration sensors.
Further, the eccentric position sensor is a hall sensor.
A balance control method of a washing machine is provided, the washing machine comprises a balance ring, a balance block, a detection device, an axial movement device and a controller; the balance ring is arranged on the roller, and the balance weight is operably arranged on the balance ring; the detection device is arranged on the periphery of the roller and is used for detecting the information of the eccentric position and the eccentric amount; the axial movement device is arranged in parallel to the central shaft of the roller, and the balance ring is movably connected to the axial movement device so as to realize the axial movement of the balance ring along the roller; the method comprises the following steps: acquiring eccentric position information and eccentric amount information; controlling the balance ring to move to an eccentric position along the axial direction of the roller based on the eccentric position information; and controlling the balance blocks to operate to balance the eccentricity based on the eccentricity information.
Further, the detection device comprises an eccentric position sensor and an acceleration sensor which are arranged on the wall of the outer barrel of the washing machine, and the eccentric position sensor and the acceleration sensor are coaxially arranged in parallel with the central axis of the outer barrel of the washing machine; the number of the eccentric position sensors is one, the number of the acceleration sensors is two, the two acceleration sensors are respectively arranged on the front half part and the rear half part of the outer barrel of the washing machine, and the eccentric position sensor is arranged between the two acceleration sensors; acquiring the eccentric position information, specifically including: acquiring and determining the vibration displacement of the roller based on the detection information of the first acceleration sensor and the second acceleration sensor; and determining the axial eccentric position according to the vibration displacement of the roller.
Further, acquiring the eccentric position information specifically includes: acquiring a current signal detected by a position sensor when the roller rotates once; acquiring a vibration displacement signal detected by the acceleration sensor every time the roller rotates for one circle; and determining the radial eccentric position based on the corresponding relation between the vibration displacement signal and the current signal.
Further, determining the radial eccentric position specifically includes: determining a phase angle between the eccentric position and the initial test point according to the peak positions of the current signal and the vibration signal; determining the eccentric position relative to the initial test point according to the phase angle; the initial test point is the installation position of the position sensor.
Compared with the prior art, the application has the advantages and positive effects that: in the washing machine and the balance control method thereof, the balance ring can move along the axial direction of the roller on the basis of the axial movement device, and in the dehydration stage, after the detection device detects the eccentric position, the balance ring is firstly controlled to move to the eccentric position on the basis of the axial movement device, and then the balance block is controlled to move in the balance ring to balance the eccentric amount according to the eccentric amount detected by the detection device, so that the balance control of the washing machine is realized, the vibration of the roller is greatly reduced, and the technical problem that the vibration noise is generated due to uneven distribution in the dehydration stage of the existing washing machine is fundamentally solved.
Other features and advantages of the present application will become apparent from the following detailed description of the embodiments of the application, which is to be read in connection with the accompanying drawings.
Drawings
Fig. 1 is an architecture view of a washing machine proposed in the present application;
fig. 2 is an architecture view of a washing machine proposed in the present application;
FIG. 3 is a flow chart of a balance control method of a washing machine according to the present application;
FIG. 4 is a schematic diagram of a balance control of the washing machine according to the present application;
FIG. 5 is a schematic diagram of detection signals of the device in the balance control of the washing machine according to the present application;
fig. 6 is a schematic diagram of an eccentric phase angle in a balance control of a washing machine according to the present application.
Detailed Description
The following describes embodiments of the present application in further detail with reference to the accompanying drawings.
The washing machine provided by the present application, as shown in fig. 1, includes an outer tub 1, a drum 2, a balance ring 3, a balance weight 4 and a controller (not shown in the figure), wherein the balance ring 3 is installed on the drum 2, and the balance weight 4 is operably disposed on the balance ring 2; the device also comprises a detection device 5 and an axial movement device 6; the detection device 5 is arranged on the periphery of the roller 2 and is used for detecting the eccentric position information and the eccentric amount information; the axial movement device 6 is arranged parallel to the central shaft of the roller 2, and the balance ring 3 is movably connected to the axial movement device 6 so as to realize the axial movement of the balance ring 3 along the roller 2; the controller is used for receiving the eccentric position information and the eccentric amount information detected by the detection device 5, controlling the balance ring 3 to move to an eccentric position along the axial movement device 6, and controlling the balance block 4 to move in the balance ring 3 to balance the eccentric amount.
As shown in fig. 2, the detecting device 5 includes an eccentric position sensor 51 and an acceleration sensor 52/53 mounted on the outer tub wall of the washing machine, and the eccentric position sensor 51 and the acceleration sensor 52/53 are coaxially mounted parallel to the central axis of the outer tub of the washing machine, i.e., are coaxially arranged along the axial direction of the outer tub wall. The vibration displacement amount of the drum can be determined based on the detection of the acceleration sensor, the mounting position of the position sensor is set as the initial position of the drum rotation, and all the detections are performed with reference to the initial position.
In the embodiment of the present application, the eccentric position sensor is one, preferably a hall sensor, the acceleration sensors are two, and the acceleration sensors are a first acceleration sensor 52 and a second acceleration sensor 53, the two acceleration sensors are respectively installed at the front half part and the rear half part of the outer tub of the washing machine, and the eccentric position sensor is installed between the two acceleration sensors. When detecting, can judge whether the eccentric position is located the cylinder front side or cylinder rear side according to the difference of the vibration displacement signal that two acceleration sensor detected, after confirming eccentric axial position, control the balancing ring and move to the cylinder front side or rear side on the basis of the axial kinematic mechanism, position the eccentric position from the cylinder axial, then control the operation of balancing piece relative balancing ring according to the eccentricity, come the ascending eccentricity of balanced cylinder, reach the effect of balancing the eccentricity from the weight distribution, fundamentally reduce the cylinder amplitude.
The axial movement device is not particularly limited in the present application, and any device capable of realizing the movement of the balancing ring along the central axis of the roller can be implemented, for example, a track structure which is parallel to the central axis of the roller and is installed on the outer side of the roller wall.
Based on the above proposed washing machine structure, the present application proposes a washing machine balance control method, as shown in fig. 3, comprising the following steps:
step S31: and acquiring eccentric position information and eccentric amount information.
After the washing machine executes the dehydration program, when the rotating speed reaches a preset value, the detection device 5 is started to detect the eccentricity, when the eccentricity is smaller than a threshold value, the rotating speed is continuously increased to execute the dehydration program, when the eccentricity is greater than the threshold value, the detection device 5 continuously calculates the eccentric position and the eccentricity, and after the controller receives the information of the eccentric position and the eccentricity, the step S32 is executed.
Step S32: and controlling the balance ring to move to the eccentric position along the axial direction of the roller based on the eccentric position information.
Specifically, in conjunction with the detection device shown in fig. 2, the vibration displacement of the drum is obtained and determined based on the detection information of the first acceleration sensor 52 and the second acceleration sensor 53, and the axial eccentric position is determined according to the vibration displacement of the drum; specifically, the front-back vibration displacement difference is calculated, and the axial eccentric position is determined according to the front-back vibration displacement difference of the roller.
When the rotating speed exceeds a preset value, the first acceleration sensor 52 and the second acceleration sensor 53 acquire vibration displacement amounts X1 and X2, and calculate an absolute difference value delta X between X1 and X2, when the delta X is smaller than a threshold value, the eccentric amount does not exceed an upper limit amount, the dewatering rotating speed can be continuously increased, when the delta X is larger than the threshold value, the eccentric amount exceeds the upper limit amount, the eccentric amount needs to be further detected, and the positive and negative values of X1-X2 are judged, if the X1-X2 is a positive value, the eccentric distribution is judged on the front side of the roller, and if the X1-X2 is a negative value, the eccentric distribution is judged on the rear side of the roller.
After the eccentric axial position is determined, the controller controls the balance ring to move to the eccentric position along the axial direction of the drum on the axial movement device, that is, to the laundry collecting position as shown in fig. 4.
Step S33: based on the eccentricity information, the operation of the balance weight is controlled to balance the eccentricity.
After the clothes move to the right position in the axial direction, the balance blocks are controlled to move on the balance ring according to the information of the eccentric amount detected by the detection device, and the imbalance caused by the eccentricity of the clothes is actively balanced in a resultant force mode.
Specifically, a current signal detected by a position sensor every time the drum rotates one circle is obtained, and a vibration displacement signal detected by an acceleration sensor every time the drum rotates one circle is obtained; and determining the radial eccentricity position based on the corresponding relation between the vibration displacement signal and the current signal.
As shown in fig. 5, the vibration displacement signal a detected by the acceleration sensor is a sine wave curve, the acceleration sensor collects a cycle of sine wave signal every time the drum rotates for one cycle, and the peak value of the wave peak is the vibration displacement caused by eccentricity, that is, the vibration displacement collected when the eccentricity passes through the position of the sensor along with one cycle of rotation of the drum; the positions of the acceleration sensor and the position sensor in the outer tub are set as an initial position and an initial test point, the position sensor detects a current signal I every time the drum rotates once, the detected current signal corresponds to a vibration peak signal, as shown in fig. 6, and a phase angle θ of the eccentricity relative to the initial position (the position of the detection device 5) can be calculated.
The radial eccentric position relative to the initial test point can be determined according to the phase angle theta; and after the radial eccentric position is determined, controlling the balance block to run on a radial plane, and balancing the eccentric amount based on the resultant force.
After the balance block stops acting, the detection device starts again to detect the eccentric amount of the washing machine, if the eccentric amount is smaller than the threshold value, the rotating speed is increased to the maximum to implement dehydration, if the eccentric amount is still larger than the threshold value, the modes from the step S31 to the step S33 are repeated to adjust the motion of the balance ring and the balance block until the eccentric amount is smaller than the threshold value, and then the rotating speed is increased until the dehydration is finished.
In the washing machine and the balance control method thereof, the balance ring can move along the axial direction of the roller on the basis of the axial movement device, and in the dehydration stage, after the detection device detects the eccentric position, the balance ring is firstly controlled to move to the eccentric position on the basis of the axial movement device, and then the balance block is controlled to move in the balance ring to balance the eccentric amount according to the eccentric amount detected by the detection device, so that the balance control of the washing machine is realized, the vibration of the roller is greatly reduced, and the technical problem that the vibration noise is generated due to uneven distribution in the dehydration stage of the existing washing machine is fundamentally solved.
It should be noted that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should also make changes, modifications, additions or substitutions within the spirit and scope of the present invention.
Claims (8)
1. A washing machine comprises a drum, a balancing ring, a balancing block and a controller, wherein the balancing ring is installed on the drum, and the balancing block is operably arranged on the balancing ring; the device is characterized by also comprising a detection device and an axial movement device; the detection device is arranged on the periphery of the roller and is used for detecting the information of the eccentric position and the eccentric amount; the axial movement device is arranged in parallel to the central shaft of the roller, and the balance ring is movably connected to the axial movement device so as to realize the axial movement of the balance ring along the roller;
the controller is used for receiving the eccentric position information and the eccentric amount information detected by the detection device, controlling the balance ring to move to an eccentric position along the axial motion device, and controlling the balance block to move to balance the eccentric amount.
2. The washing machine as claimed in claim 1, wherein the detection device includes an eccentric position sensor and an acceleration sensor mounted on a wall of an outer tub of the washing machine, the eccentric position sensor and the acceleration sensor being coaxially mounted parallel to a central axis of the outer tub of the washing machine.
3. The washing machine as claimed in claim 2, wherein the eccentric position sensor is one, the acceleration sensors are two, the two acceleration sensors are respectively installed at a front half part and a rear half part of the outer tub of the washing machine, and the eccentric position sensor is installed between the two acceleration sensors.
4. The washing machine as claimed in claim 2, wherein the eccentric position sensor is a hall sensor.
5. The washing machine comprises a drum, a balance ring, a balance block, a detection device, an axial movement device and a controller; the balance ring is arranged on the roller, and the balance weight is operably arranged on the balance ring; the detection device is arranged on the periphery of the roller and used for detecting the eccentric position information and the eccentric amount information; the axial movement device is arranged in parallel to the central shaft of the roller, and the balance ring is movably connected to the axial movement device so as to realize the axial movement of the balance ring along the roller; the method is characterized by comprising the following steps:
acquiring eccentric position information and eccentric amount information;
controlling the balancing ring to move to an eccentric position along the axial direction of the roller based on the eccentric position information;
and controlling the balance weight to operate to balance the eccentricity based on the eccentricity information.
6. The balance control method of the washing machine as claimed in claim 5, wherein the detecting device includes an eccentric position sensor and an acceleration sensor mounted on a wall of an outer tub of the washing machine, the eccentric position sensor and the acceleration sensor being coaxially mounted in parallel to a central axis of the outer tub of the washing machine; the number of the eccentric position sensors is one, the number of the acceleration sensors is two, the two acceleration sensors are respectively arranged on the front half part and the rear half part of the outer barrel of the washing machine, and the eccentric position sensor is arranged between the two acceleration sensors; acquiring the eccentric position information, specifically including:
acquiring and determining the vibration displacement of the roller based on the detection information of the first acceleration sensor and the second acceleration sensor;
and determining the axial eccentric position according to the vibration displacement of the roller.
7. The balance control method of a washing machine according to claim 6, wherein the acquiring of the eccentric position information specifically includes:
acquiring a current signal detected by a position sensor when the roller rotates for one circle; and (c) a second step of,
acquiring a vibration displacement signal detected by an acceleration sensor every time a roller rotates;
and determining the radial eccentric position based on the corresponding relation between the vibration displacement signal and the current signal.
8. A washing machine balance control method according to claim 7, characterized in that the radial eccentricity position is determined, in particular:
determining a phase angle between the eccentric position and the initial test point according to the peak positions of the current signal and the vibration signal;
determining the eccentric position relative to the initial test point according to the phase angle;
the initial test point is the installation position of the position sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910420522.XA CN111962260B (en) | 2019-05-20 | 2019-05-20 | Washing machine and balance control method thereof |
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| CN201910420522.XA CN111962260B (en) | 2019-05-20 | 2019-05-20 | Washing machine and balance control method thereof |
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| CN111962260B true CN111962260B (en) | 2022-07-26 |
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| CN113668188B (en) * | 2021-08-16 | 2024-04-19 | 海信冰箱有限公司 | Washing machine, vibration control method thereof and electronic equipment |
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