CN113403803A - Washing machine dehydration method and washing machine - Google Patents
Washing machine dehydration method and washing machine Download PDFInfo
- Publication number
- CN113403803A CN113403803A CN202110772234.8A CN202110772234A CN113403803A CN 113403803 A CN113403803 A CN 113403803A CN 202110772234 A CN202110772234 A CN 202110772234A CN 113403803 A CN113403803 A CN 113403803A
- Authority
- CN
- China
- Prior art keywords
- displacement
- washing machine
- determining
- eccentric position
- radial displacement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005406 washing Methods 0.000 title claims abstract description 121
- 238000000034 method Methods 0.000 title claims abstract description 46
- 230000018044 dehydration Effects 0.000 title claims abstract description 31
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 31
- 238000006073 displacement reaction Methods 0.000 claims abstract description 322
- 230000008569 process Effects 0.000 claims abstract description 16
- 238000005259 measurement Methods 0.000 claims description 46
- 230000005540 biological transmission Effects 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 7
- 239000000725 suspension Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/16—Imbalance
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/26—Unbalance; Noise level
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
- D06F2105/48—Drum speed
Abstract
The application provides a washing machine dewatering method and a washing machine, relates to the field of electrical equipment, and achieves the purpose of reducing noise. The method comprises the following steps: measuring the displacement of the outer drum of the washing machine generated by vibration in the dewatering process of the washing machine; determining an eccentric position of a load in the washing machine drum based on the displacement; acquiring the eccentric amount of a load in the inner cylinder; determining a target rotation speed based on the eccentric position and the eccentric amount; the inner drum is controlled to rotate at a target rotating speed to dehydrate the load, so that the noise generated during dehydration of the washing machine is as low as possible.
Description
Technical Field
The application relates to the field of electrical equipment, in particular to a washing machine dehydration method and a washing machine.
Background
With the gradual improvement of living standard of people, the washing machine has become an indispensable electrical appliance for each household, and the dewatering function of the washing machine is more and more emphasized by users.
Washing machines generally dehydrate the load of the washing machine by rotating the inner drum of the washing machine, but during the dehydration process of the washing machine, large noise is generated, and the customer experience is affected.
Disclosure of Invention
An object of the present application is to solve the problem of the prior art that noise is large when a washing machine is dehydrating.
In order to solve the above problems, the present application provides a dehydration method of a washing machine, the method including: measuring the displacement of the outer drum of the washing machine generated by vibration in the dewatering process of the washing machine; determining an eccentric position of a load in the washing machine in a washing machine drum based on the displacement; acquiring the eccentricity of the load in the inner barrel; determining a target rotation speed based on the eccentric position and the eccentric amount; and controlling the inner barrel to rotate at the target rotating speed so as to dehydrate the load.
In another aspect of the present application, there is provided a washing machine including: the washing machine body comprises a box body, an outer barrel arranged in the box body, an inner barrel arranged in the outer barrel and a controller for controlling the inner barrel to rotate, wherein the barrel bottom of the inner barrel is connected with the barrel bottom of the outer barrel; the vibration displacement sensor is arranged on the outer cylinder and is connected with the controller; the controller is configured to: measuring the displacement of the outer drum of the washing machine generated by vibration in the dewatering process of the washing machine; determining an eccentric position of a load in the washing machine in a washing machine drum based on the displacement; acquiring the eccentricity of the load in the inner barrel; determining a target rotation speed based on the eccentric position and the eccentric amount; and controlling the inner barrel to rotate at the target rotating speed so as to dehydrate the load.
In an embodiment of the present application, based on the foregoing solution, the controller is configured to: measuring radial displacement generated by vibration of the outer cylinder along the radial direction of the outer cylinder; measuring axial displacement generated by vibration of the outer cylinder along the axial direction of the outer cylinder; comparing the radial displacement with the axial displacement to obtain a first comparison result; determining the eccentric position based on the first comparison result.
In an embodiment of the present application, based on the foregoing solution, the controller is configured to: measuring a maximum radial displacement of the outer cylinder generated by vibration in a radial direction of the outer cylinder as the radial displacement; measuring, as the axial displacement, a displacement of the outer cylinder that occurs along the axial direction of the outer cylinder when the radial direction of the outer cylinder reaches the maximum radial displacement.
In an embodiment of the present application, based on the foregoing solution, the controller is configured to: measuring a maximum radial displacement of the outer cylinder generated by vibration in a radial direction of the outer cylinder as the radial displacement; and measuring the maximum axial displacement generated by the vibration of the outer cylinder along the axial direction of the outer cylinder as the axial displacement.
In an embodiment of the present application, based on the foregoing solution, the controller is configured to: if the first comparison result is that the radial displacement is larger than the axial displacement, determining that the eccentric position is one end of the inner cylinder close to a displacement measurement position; if the first comparison result is that the radial displacement is close to the axial displacement, determining the eccentric position as the middle part of the inner cylinder; and if the first comparison result is that the radial displacement is smaller than the axial displacement, determining that the eccentric position is the other end of the inner cylinder far away from the displacement measurement position.
In an embodiment of the present application, based on the foregoing solution, the controller is configured to: if the first comparison result is that the ratio of the radial displacement to the axial displacement is greater than a first set ratio, determining the eccentric position as one end of the inner cylinder close to a displacement measurement position; if the first comparison result is that the ratio of the radial displacement to the axial displacement is smaller than a second set ratio, determining that the eccentric position is the other end of the inner cylinder far away from the displacement measurement position, wherein the second set ratio is smaller than the first set ratio; and if the first comparison result is that the ratio of the radial displacement to the axial displacement is smaller than the first set ratio and larger than the second set ratio, determining that the eccentric position is the middle part of the inner barrel.
In an embodiment of the present application, based on the foregoing solution, the controller is configured to: if the first comparison result is that the difference value between the radial displacement and the axial displacement is larger than a first set difference value, determining that the eccentric position is one end of the inner cylinder close to a displacement measurement position; if the first comparison result is that the difference value between the radial displacement and the axial displacement is smaller than a second set difference value, determining that the eccentric position is the other end of the inner cylinder far away from the displacement measurement position, wherein the second set difference value is smaller than the first set difference value; and if the first comparison result is that the difference value between the radial displacement and the axial displacement is greater than the first set difference value and smaller than the second set difference value, determining the eccentric position as the middle part of the inner barrel.
In an embodiment of the present application, based on the foregoing, the displacement includes a radial displacement generated by the outer cylinder vibrating along a radial direction of the outer cylinder, and an axial displacement generated by the outer cylinder vibrating along an axial direction of the outer cylinder, wherein the radial displacement includes a parallel radial displacement parallel to the ground and a perpendicular radial displacement perpendicular to the ground, and the controller is configured to: comparing the parallel radial displacement, the parallel radial displacement and the axial displacement to obtain a second comparison result; determining the eccentric position based on the second comparison result.
In an embodiment of the present application, based on the foregoing solution, the controller is configured to: if the second comparison result is that the parallel radial displacement is greater than the vertical radial displacement or the parallel radial displacement is greater than the axial displacement, determining the eccentric position as one end of the inner cylinder close to the displacement measurement position; if the second comparison result is that the parallel radial displacement is smaller than the vertical radial displacement or the parallel radial displacement is smaller than the axial displacement, determining that the eccentric position is the other end of the inner cylinder far away from the displacement measurement position; and if the second comparison result is that the parallel radial displacement is close to the vertical radial displacement or the parallel radial displacement is close to the axial displacement, determining the eccentric position as the middle part of the inner cylinder.
According to the technical scheme, the method has at least the following advantages and positive effects:
the dehydration method of the washing machine comprises the steps of measuring the displacement generated by vibration of an outer barrel of the washing machine in the dehydration process of the washing machine; determining an eccentric position of a load in the washing machine drum based on the displacement; acquiring the eccentric amount of a load in the inner cylinder; determining a target rotation speed based on the eccentric position and the eccentric amount; the inner cylinder is controlled to rotate at a target rotating speed so as to dehydrate the load, so that the displacement of the outer cylinder in the dehydration process of the washing machine is reduced as much as possible, and the collision between the outer cylinder and the shell of the washing machine is reduced, thereby reducing the noise generated in the dehydration process of the washing machine.
Drawings
Fig. 1 schematically illustrates a structural view of a washing machine according to an embodiment of the present application;
FIG. 2 schematically illustrates an eccentric position schematic according to an embodiment of the present application;
FIG. 3 schematically illustrates a flow chart of a washing machine dehydration method according to one embodiment of the present application;
FIG. 4 schematically illustrates a flow chart of a method of dewatering a drum washing machine according to one embodiment of the present application;
FIG. 5 schematically illustrates a flow chart for determining an eccentric position according to an embodiment of the present application;
FIG. 6 schematically shows a flow chart for determining an eccentric position according to an embodiment of the present application.
Detailed Description
Exemplary embodiments that embody features and advantages of the present application will be described in detail in the following description. It is to be understood that the present application is capable of various modifications in various embodiments without departing from the scope of the application, and that the description and drawings are to be taken as illustrative and not restrictive in character.
In one embodiment of the present application, there is provided a washing machine including a washing machine body, as shown in fig. 1, fig. 1 schematically shows a structural schematic view of the washing machine according to one embodiment of the present application, and the washing machine body may include a window 1, a door seal 2, an outer tub 3, an inner tub 4, a cabinet 5, a suspension spring 7, a motor 8, and a damper 9. The window 1 is arranged on the box body 5 and is connected with the outer drum 3 of the washing machine through a door seal 2, and the door seal 2 can be made of rubber materials; the outer cylinder 3 is positioned in the box body 5, and the outer cylinder 3 is connected with the box body 5 through a hanging spring 7 and a shock absorber 9; the inner cylinder 4 is positioned in the outer cylinder 3 and is connected with the motor 8 through a transmission mechanism, a transmission shaft of the transmission mechanism is connected with the center of a circle at the bottom of the inner cylinder 4, the transmission shaft of the transmission mechanism is connected with the center of a circle at the bottom of the outer cylinder 3, and the shaft of the inner cylinder 4 and the shaft of the outer cylinder 3 are on the same straight line; the vibration sensor 6 is provided on the outer tub 3, and the vibration sensor 6 is connected to the controller. The controller comprises a washing machine main control device and a motor control device, the washing machine main control device drives a washing machine motor to rotate through the motor control device, meanwhile, vibration displacement of the outer barrel 3 can be fed back to the washing machine main control device, and the main control device controls the rotating speed of the washing machine according to the washing machine dehydration method, so that vibration noise of the washing machine is reduced.
In one embodiment of the present application, the vibration sensor 6 is disposed on the outer sidewall of the outer cylinder 3 to prevent the vibration sensor 6 from affecting the rotation of the inner cylinder 4.
In one embodiment of the application, the transmission mechanism can be a bearing structure positioned at the rear side of the outer barrel, and the transmission mechanism is also used for providing rigid support for the inner barrel.
In one embodiment of the present application, when the eccentric position is near the open end, it may be determined that the eccentric position at this time is a front eccentricity; when the eccentric position is close to the closed end, the eccentric position at the moment can be determined as rear eccentricity; the eccentric position may include a middle eccentric located at the middle of the inner cylinder in addition to the front and rear eccentricities, as shown in fig. 2, fig. 2 schematically shows a schematic diagram of the eccentric position according to an embodiment of the present application, and the parallel radial displacement of the outer cylinder along the direction parallel to the ground may be represented by Y, the vertical radial displacement of the outer cylinder perpendicular to the ground may be represented by Z, and the axial displacement may be represented by X.
In an embodiment of the present application, a washing machine dehydration method is provided as shown in fig. 3, and fig. 3 schematically shows a washing machine dehydration method flowchart according to an embodiment of the present application, and an execution subject of the washing machine dehydration method may be a washing machine, a controller in the washing machine, or a main control device in the washing machine.
Referring to fig. 3, the dehydration method of the washing machine at least includes steps S310 to S350, which are described in detail as follows:
in step S310, a displacement of the tub caused by vibration during the dehydration of the washing machine is measured.
In one embodiment of the present application, the radial displacement of the outer cylinder caused by vibration in the radial direction of the outer cylinder may be measured; and measuring the axial displacement generated by the vibration of the outer cylinder along the axial direction of the outer cylinder.
In step S320, an eccentric position of the load in the washing machine drum is determined based on the displacement.
In one embodiment of the present application, the radial displacement and the axial displacement may be compared to obtain a first comparison result; based on the first comparison result, the eccentric position is determined, and since the displacement of the outer cylinder is generated by the rotation of the inner cylinder, the displacement of the outer cylinder in a certain direction can reflect the vibration magnitude of the inner cylinder in a certain direction, and therefore, the eccentric position of the inner cylinder can be determined by comparing the displacements of the outer cylinder in different directions.
In an embodiment of the present application, if the first comparison result is that the radial displacement is greater than the axial displacement, the eccentric position may be determined as one end of the inner cylinder close to the displacement measurement position; if the first comparison result is that the radial displacement is close to the axial displacement, the eccentric position can be determined as the middle part of the inner cylinder; if the first comparison result is that the radial displacement is smaller than the axial displacement, the eccentric position can be determined to be the other end of the inner cylinder away from the displacement measurement position.
In this embodiment, when the washing machine is dehydrating, the vibration of the inner cylinder at the eccentric position is usually more severe than that at other positions, and when the vibration is severe, the radial vibration of the outer cylinder is usually greater than the axial vibration due to the fixation of the transmission mechanism, so when the radial displacement at the displacement measurement position is greater than the axial displacement, it is indicated that the displacement measurement position is close to the eccentric position, and if the displacement measurement position is close to the opening end, it can be determined that the eccentric position is front eccentricity; if the displacement measurement position is close to the closed end, the eccentric position can be determined as rear eccentricity; if the radial displacement is similar to the axial displacement, the eccentric position can be determined as the middle part of the inner cylinder; when the radial displacement at the displacement measurement position is smaller than the axial displacement, the displacement measurement position is far away from the eccentric position, and if the displacement measurement position is close to the opening end, the eccentric position can be determined as the rear eccentricity; if the displacement measurement location is near the closed end, the eccentricity location may be determined to be a forward eccentricity.
In an embodiment of the present application, if the first comparison result is that the ratio of the radial displacement to the axial displacement is greater than the first set ratio, the eccentric position is determined to be the end of the inner cylinder close to the displacement measurement position; if the first comparison result is that the ratio of the radial displacement to the axial displacement is smaller than a second set ratio, determining that the eccentric position is the other end of the inner cylinder far away from the displacement measurement position, wherein the second set ratio is smaller than the first set ratio; and if the first comparison result is that the ratio of the radial displacement to the axial displacement is greater than a first set ratio and smaller than a second set ratio, determining the eccentric position as the middle part of the inner cylinder. In this embodiment, the first set ratio and the second set ratio may be set according to actual conditions.
In an embodiment of the present application, if the first comparison result is that the difference between the radial displacement and the axial displacement is greater than the first set difference, the eccentric position is determined to be one end of the inner cylinder close to the displacement measurement position; if the first comparison result is that the difference value between the radial displacement and the axial displacement is smaller than a second set difference value, determining that the eccentric position is the other end of the inner cylinder far away from the displacement measurement position, wherein the second set difference value is smaller than the first set difference value; and if the first comparison result is that the difference value between the radial displacement and the axial displacement is greater than the first set difference value and smaller than the second set difference value, determining the eccentric position as the middle part of the inner cylinder. In this embodiment, the first setting difference and the second setting difference may be set according to actual conditions.
In one embodiment of the application, the displacement of the outer cylinder in the low rotation speed area can be obtained to determine the eccentric position of the outer cylinder in the low rotation speed area, and the inner cylinder can be increased to the target rotation speed from the lower rotation speed corresponding to the determined eccentric position.
With continued reference to FIG. 3, in step S330, the amount of eccentricity of the load in the inner barrel is obtained.
In one embodiment of the present application, the eccentricity amount may be determined according to the fluctuation of the rotation speed of the motor of the washing machine. The rotating speed fluctuation is large, and the eccentricity is large; the rotation speed fluctuation is small, and the eccentricity is small.
In one embodiment of the present application, the eccentricity amount may be determined according to the displacement of the outer cylinder.
In one embodiment of the application, the eccentricity of the load can be obtained when the inner barrel operates at a lower rotating speed, when the inner barrel is accelerated, the eccentricity is basically unchanged, the eccentricity is determined at the lower rotating speed, and the inner barrel can be increased to the target rotating speed from the lower rotating speed corresponding to the determined eccentricity.
In step S340, a target rotation speed is determined based on the eccentric position and the eccentric amount.
In an embodiment of the application, the corresponding relationship between the eccentric position, the eccentric amount and the target rotation speed may be determined through experiments or experiences, and after the eccentric position and the eccentric amount are obtained, the target rotation speed is determined by searching the corresponding relationship. Taking the displacement measurement position to be close to the open end of the inner cylinder as an example, table 1 schematically shows that the eccentric magnitude relation of different positions corresponding to different rotation speed settings in the application, and of course, the displacement measurement position can also be set at a position close to the closed end of the inner cylinder.
TABLE 1 relationship of eccentricity at different positions corresponding to different rotation speed settings
In step S350, the inner tub is controlled to rotate at a target rotation speed to dehydrate the load.
In the embodiment of fig. 3, the displacement is generated by measuring the vibration of the tub during the dehydration process of the washing machine; determining an eccentric position of a load in the washing machine drum based on the displacement; acquiring the eccentric amount of a load in the inner cylinder; determining a target rotation speed based on the eccentric position and the eccentric amount; the inner cylinder is controlled to rotate at a target rotating speed so as to dehydrate the load, so that the displacement of the outer cylinder in the dehydration process of the washing machine is reduced as much as possible, and the collision between the outer cylinder and the shell of the washing machine is reduced, thereby reducing the noise generated in the dehydration process of the washing machine.
In one embodiment of the present application, in the step of measuring the displacement of the tub caused by vibration during the dehydration of the washing machine in step S310 of fig. 3, the maximum radial displacement of the tub caused by vibration in the radial direction of the tub may be measured as the radial displacement; the displacement of the outer tub in the axial direction of the outer tub when the maximum radial displacement is reached in the radial direction of the outer tub is measured as the axial displacement, and since the radial displacement is usually larger than the axial displacement during the dehydration, the eccentric position determined from the maximum radial displacement is usually the exact eccentric position.
In one embodiment of the present application, in the step of measuring the displacement of the tub caused by vibration during the dehydration of the washing machine in step S310 of fig. 3, the maximum radial displacement of the tub caused by vibration in the radial direction of the tub may be measured as the radial displacement; the maximum axial displacement generated by the vibration of the outer cylinder along the axial direction of the outer cylinder can be measured and used as the axial displacement, and the eccentric position determined according to the maximum radial displacement and the maximum axial displacement is more accurate.
In one embodiment of the present application, when the washing machine is a rolling washing machine, the radial displacement may include a parallel radial displacement parallel to the ground and a perpendicular radial displacement perpendicular to the ground, and determining an eccentric position of a load in the washing machine in the drum of the washing machine based on the displacements in step S320 of fig. 3 may include: comparing the parallel radial displacement, the parallel radial displacement and the axial displacement to obtain a second comparison result; based on the second comparison result, the eccentric position is determined.
In this embodiment, the inventor found that, since the outer tub is mounted with the suspension spring having a suspension function and the damper having a function of reducing the vibration displacement of the outer tub of the washing machine, the vibration of the outer tub in the radial direction perpendicular to the ground is smaller than the vibration of the outer tub in the radial direction parallel to the ground under the functions of the suspension spring and the damper of the drum washing machine, and therefore, when determining the eccentric position, the determination of the eccentric position can be made more accurate by distinguishing the vertical radial displacement from the parallel radial displacement.
In an embodiment of the present application, if the second comparison result is that the parallel radial displacement is greater than the vertical radial displacement, or the parallel radial displacement is greater than the axial displacement, the eccentric position is determined as one end of the inner cylinder close to the displacement measurement position; if the second comparison result is that the parallel radial displacement is smaller than the vertical radial displacement or the parallel radial displacement is smaller than the axial displacement, determining that the eccentric position is the other end of the inner cylinder far away from the displacement measurement position; and if the second comparison result is that the parallel radial displacement is close to the vertical radial displacement or the parallel radial displacement is close to the axial displacement, determining that the eccentric position is the middle part of the inner cylinder.
In this embodiment, referring to the above description, during the dewatering process of the washing machine, the vibration of the inner cylinder at the eccentric position is usually more severe than that at other positions, and when the vibration is severe, the parallel radial displacement is usually larger than the vertical radial displacement or the axial displacement due to the fixing of the transmission mechanism and the action of gravity, so that when the parallel radial displacement at the displacement measurement position is larger than the vertical radial displacement or the axial displacement, it indicates that the displacement measurement position is close to the eccentric position, and if the displacement measurement position is close to the opening end, it can be determined that the eccentric position is the front eccentricity; if the displacement measurement position is close to the closed end, the eccentric position can be determined as rear eccentricity; if the radial displacement is similar to the axial displacement, the eccentric position can be determined as the middle part of the inner cylinder; when the parallel radial displacement at the displacement measurement position is smaller than the vertical radial displacement or the axial displacement, the displacement measurement position is far away from the eccentric position, and if the displacement measurement position is close to the opening end, the eccentric position can be determined as the rear eccentricity; if the displacement measurement location is near the closed end, the eccentricity location may be determined to be a forward eccentricity.
In this embodiment, the relationship between the parallel radial displacement and the vertical radial displacement is represented by Y, the axial displacement is represented by X, and X, Y, Z and the eccentric position can be shown in table 2, taking the displacement measurement position near the open end of the inner tube as an example.
TABLE 2X, Y, Z relationship to eccentric position
| X, Y, Z numerical relationship | Eccentricity position determination |
| Y>X or Y>Z | Front eccentric center |
| Y<X or Y<Z | Rear eccentric center |
| Y is close to X or Z | Middle eccentric center |
In an embodiment of the present application, if the second comparison result is that the ratio of the parallel radial displacement to the perpendicular radial displacement is greater than a third set ratio, or the ratio of the parallel radial displacement to the axial displacement is greater than a fourth set ratio, the eccentric position is determined to be one end of the inner cylinder close to the displacement measurement position; if the ratio of the parallel radial displacement to the vertical radial displacement is smaller than a fifth set ratio or the ratio of the parallel radial displacement to the axial displacement is smaller than a sixth set ratio, determining that the eccentric position is the other end of the inner cylinder far away from the displacement measurement position; and if the ratio of the parallel radial displacement to the vertical radial displacement is greater than a third set ratio and less than a fifth set ratio, or the ratio of the parallel radial displacement to the axial displacement is greater than a fourth set ratio and less than a sixth set ratio, determining that the eccentric position is the middle part of the inner cylinder. In this embodiment, the third set ratio and the fourth set ratio may be the same, the fifth set ratio and the sixth set ratio may be the same, and the third set ratio, the fourth set ratio, the fifth set ratio and the sixth set ratio may be set according to actual conditions.
In this embodiment X, Y, Z may be related to the off-center position as shown in Table 3. The third set ratio and the fourth set ratio in table 3 are both a, and the fifth set ratio and the sixth set ratio in table 3 are both b.
TABLE 3X, Y, Z relationship to off-center position
| X, Y, Z proportional relation | Eccentricity position determination |
| Y/X>a or Y/Z>a | Front eccentric center |
| Y/X<b or Y/Z<b | Rear eccentric center |
| b<Y/X<a or b<Y/Z<a | Middle eccentric center |
In an embodiment of the present application, if the second comparison result is that the difference between the parallel radial displacement and the perpendicular radial displacement is greater than a third set difference, or the difference between the parallel radial displacement and the axial displacement is greater than a fourth set difference, the eccentric position is determined to be the front eccentricity; if the difference between the parallel radial displacement and the vertical radial displacement is smaller than a fifth set difference, or the difference between the parallel radial displacement and the axial displacement is smaller than a sixth set difference, determining the eccentric position as the rear eccentricity; and if the difference value between the parallel radial displacement and the vertical radial displacement is greater than a third set difference value and less than a fifth set difference value, or the difference value between the parallel radial displacement and the axial displacement is greater than a fourth set difference value and less than a sixth set difference value, determining that the eccentric position is the middle eccentric position. In this embodiment, the third setting difference and the fourth setting difference may be the same, the fifth setting difference and the sixth setting difference may be the same, and the third setting difference, the fourth setting difference, the fifth setting difference and the sixth setting difference may be set according to actual conditions.
In this embodiment, taking the displacement measurement position near the open end of the inner barrel as an example, X, Y, Z can be related to the eccentric position as shown in table 4. The third setting difference and the fourth setting difference in table 4 are both c, and the fifth setting difference and the sixth setting difference in table 3 are both d.
TABLE 4X, Y, Z relationship to off-center position
| X, Y, Z proportional relation | Eccentricity position determination |
| Y-X>c or Y-Z>c | Front eccentric center |
| Y-X<d or Y-Z<d | Rear eccentric center |
| d<Y-X<c or d<Y-Z<c | Middle eccentric center |
In one embodiment of the present application, a maximum parallel radial displacement of the outer tub due to vibration along a radial direction of the outer tub parallel to the ground may be measured as the parallel radial displacement; measuring the displacement generated by the vibration of the outer cylinder along the radial direction of the outer cylinder vertical to the ground when the radial direction of the outer cylinder parallel to the ground reaches the maximum parallel radial displacement, and taking the displacement as the vertical radial displacement; the displacement of the outer cylinder along the axial direction of the outer cylinder is measured as the axial displacement when the radial direction of the outer cylinder parallel to the ground reaches the maximum parallel radial displacement, and since the parallel radial displacement is usually larger than the vertical radial displacement and the axial displacement during the dehydration process, the eccentric position determined according to the maximum parallel radial displacement is usually the accurate eccentric position.
In one embodiment of the present application, a maximum parallel radial displacement of the outer tub due to vibration along a radial direction of the outer tub parallel to the ground may be measured as the parallel radial displacement; the maximum vertical radial displacement generated by vibration of the outer cylinder along the radial direction of the outer cylinder perpendicular to the ground can be measured and used as the vertical radial displacement; the maximum axial radial displacement generated by the vibration of the outer cylinder along the axial direction of the outer cylinder can be measured and used as the axial displacement, and the eccentric position determined according to the maximum parallel radial displacement, the maximum vertical radial displacement and the maximum axial displacement is more accurate.
In an embodiment of the present application, before the dewatering method of the washing machine is performed, the load may be shaken to avoid the inaccuracy of the determined target rotation speed caused by the knotting of the load. Fig. 4 schematically shows a flowchart of a dehydration method of a drum washing machine according to an embodiment of the present application, where an execution subject of the dehydration method of the drum washing machine may be a washing machine, a controller in the washing machine, or a main control device in the washing machine, and as shown in fig. 4, the dehydration method of the washing machine may include steps S410 to S470, which are described in detail as follows:
in step S410, start;
in step S420, the load of the drum washing machine is shaken off;
in step S430, detecting the load eccentricity of the drum washing machine;
in step S440, detecting a load eccentricity position of the drum washing machine;
in step S450, determining the dehydration rotation speed of the drum washing machine according to the load eccentricity and the eccentric position of the drum washing machine;
in step S460, performing a dehydration process of the drum washing machine according to the dehydration rotation speed;
in step S470, the process ends.
In an embodiment of the present application, in the step of fig. 4 in step S440, the drum washing machine load eccentricity position detection may be as shown in fig. 5, and fig. 5 schematically shows a flowchart for determining the eccentricity position according to an embodiment of the present application, wherein the parallel radial displacement is denoted by Y, the vertical radial displacement is denoted by Z, and the axial displacement is denoted by X, and may include steps S510 to S540, which are described in detail as follows:
in step S510, detecting a real-time rotation speed of the drum washing machine;
in step S520, detecting X, Y, Z vibration displacement of the drum washing machine in three directions at the current rotation speed;
in step S530, comparing the maximum vibration displacement in the Y direction and the corresponding X, Z vibration displacement;
in step S540, the position of the load eccentricity in the drum of the washing machine is obtained according to the rules of table 2, table 3 or table 4.
In the embodiment of fig. 5, the maximum vibration displacement of the outer drum of the washing machine in the Y direction can be accurately found by detecting the vibration displacement of the washing machine in real time.
In an embodiment of the present application, in the step of fig. 4 in step S440, the drum washing machine load eccentricity position detection may be as shown in fig. 6, fig. 6 schematically shows a flowchart for determining the eccentricity position according to an embodiment of the present application, and may include steps S610 to S640, which are described in detail as follows:
in step S610, detecting a real-time rotation speed of the drum washing machine;
in step S620, detecting X, Y, Z vibration displacement of the drum washing machine in three directions at the current rotation speed;
in step S630, the maximum vibration displacements in three directions are obtained X, Y, Z by comparison;
in step S640, the position of the load eccentricity in the drum of the washing machine is obtained according to the rules of table 2, table 3, or table 4.
In the embodiment of fig. 6, the maximum vibration displacement of the outer drum of the washing machine in X, Y, Z directions can be accurately found by detecting the vibration displacement of the washing machine in real time.
While the present application has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present application may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (10)
1. A dehydration method of a washing machine, characterized by comprising:
measuring the displacement of the outer drum of the washing machine generated by vibration in the dewatering process of the washing machine;
determining an eccentric position of a load in the washing machine in a washing machine drum based on the displacement;
acquiring the eccentricity of the load in the inner barrel;
determining a target rotation speed based on the eccentric position and the eccentric amount;
and controlling the inner barrel to rotate at the target rotating speed so as to dehydrate the load.
2. The dehydrating method of a washing machine as claimed in claim 1, wherein the measuring of the displacement of the tub caused by vibration during the dehydrating process of the washing machine comprises:
measuring radial displacement generated by vibration of the outer cylinder along the radial direction of the outer cylinder;
measuring axial displacement generated by vibration of the outer cylinder along the axial direction of the outer cylinder;
the determining an eccentric position of a load in the washing machine in a washing machine drum based on the displacement comprises:
comparing the radial displacement with the axial displacement to obtain a first comparison result;
determining the eccentric position based on the first comparison result.
3. The dehydrating method of a washing machine according to claim 2,
the measuring the radial displacement generated by the vibration of the outer cylinder along the radial direction of the outer cylinder comprises: measuring a maximum radial displacement of the outer cylinder generated by vibration in a radial direction of the outer cylinder as the radial displacement;
the measuring of the axial displacement of the outer cylinder generated by vibration along the axial direction of the outer cylinder comprises: measuring, as the axial displacement, a displacement of the outer cylinder that occurs along the axial direction of the outer cylinder when the radial direction of the outer cylinder reaches the maximum radial displacement.
4. The dehydrating method of a washing machine according to claim 2,
the measuring the radial displacement generated by the vibration of the outer cylinder along the radial direction of the outer cylinder comprises: measuring a maximum radial displacement of the outer cylinder generated by vibration in a radial direction of the outer cylinder as the radial displacement;
the measuring of the axial displacement of the outer cylinder generated by vibration along the axial direction of the outer cylinder comprises: and measuring the maximum axial displacement generated by the vibration of the outer cylinder along the axial direction of the outer cylinder as the axial displacement.
5. The dewatering method of a washing machine according to claim 2, wherein the determining the eccentric position based on the first comparison result includes:
if the first comparison result is that the radial displacement is larger than the axial displacement, determining that the eccentric position is one end of the inner cylinder close to a displacement measurement position;
if the first comparison result is that the radial displacement is close to the axial displacement, determining the eccentric position as the middle part of the inner cylinder;
and if the first comparison result is that the radial displacement is smaller than the axial displacement, determining that the eccentric position is the other end of the inner cylinder far away from the displacement measurement position.
6. The dewatering method of a washing machine according to claim 2, wherein the determining the eccentric position based on the first comparison result includes:
if the first comparison result is that the ratio of the radial displacement to the axial displacement is greater than a first set ratio, determining the eccentric position as one end of the inner cylinder close to a displacement measurement position;
if the first comparison result is that the ratio of the radial displacement to the axial displacement is smaller than a second set ratio, determining that the eccentric position is the other end of the inner cylinder far away from the displacement measurement position, wherein the second set ratio is smaller than the first set ratio;
and if the first comparison result is that the ratio of the radial displacement to the axial displacement is smaller than the first set ratio and larger than the second set ratio, determining that the eccentric position is the middle part of the inner barrel.
7. The dewatering method of a washing machine according to claim 2, wherein the determining the eccentric position based on the first comparison result includes:
if the first comparison result is that the difference value between the radial displacement and the axial displacement is larger than a first set difference value, determining the eccentric position as one end of the inner cylinder close to a displacement measurement position;
if the first comparison result is that the difference value between the radial displacement and the axial displacement is smaller than a second set difference value, determining that the eccentric position is the other end of the inner cylinder, which is far away from the displacement measurement position, wherein the second set difference value is smaller than the first set difference value;
and if the first comparison result is that the difference value between the radial displacement and the axial displacement is greater than the first set difference value and smaller than the second set difference value, determining the eccentric position as the middle part of the inner barrel.
8. The dewatering method for a washing machine as claimed in claim 1, wherein the displacement includes a radial displacement caused by vibration of the tub in a radial direction of the tub and an axial displacement caused by vibration of the tub in an axial direction of the tub, wherein the radial displacement includes a parallel radial displacement parallel to the ground and a perpendicular radial displacement perpendicular to the ground, and the determining the eccentric position of the load in the washing machine drum based on the displacement includes:
comparing the parallel radial displacement, the parallel radial displacement and the axial displacement to obtain a second comparison result;
determining the eccentric position based on the second comparison result.
9. The dewatering method of a washing machine according to claim 8, wherein said determining the eccentric position based on the second comparison result includes:
if the second comparison result is that the parallel radial displacement is greater than the vertical radial displacement or the parallel radial displacement is greater than the axial displacement, determining the eccentric position as one end of the inner cylinder close to the displacement measurement position;
if the second comparison result is that the parallel radial displacement is smaller than the vertical radial displacement or the parallel radial displacement is smaller than the axial displacement, determining that the eccentric position is the other end of the inner cylinder far away from the displacement measurement position;
and if the second comparison result is that the parallel radial displacement is close to the vertical radial displacement or the parallel radial displacement is close to the axial displacement, determining the eccentric position as the middle part of the inner cylinder.
10. A washing machine, characterized by comprising:
a washing machine body comprising a box body, an outer barrel arranged in the box body, an inner barrel arranged in the outer barrel, and a controller for controlling the rotation of the inner barrel, wherein the barrel bottom of the inner barrel is connected with the barrel bottom of the outer barrel, and the controller is used for executing the method of any one of the claims 1-9;
and the vibration displacement sensor is arranged on the outer barrel and is connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110772234.8A CN113403803A (en) | 2021-07-06 | 2021-07-06 | Washing machine dehydration method and washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110772234.8A CN113403803A (en) | 2021-07-06 | 2021-07-06 | Washing machine dehydration method and washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113403803A true CN113403803A (en) | 2021-09-17 |
Family
ID=77685609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110772234.8A Pending CN113403803A (en) | 2021-07-06 | 2021-07-06 | Washing machine dehydration method and washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113403803A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113789638A (en) * | 2021-10-11 | 2021-12-14 | 海信（山东）冰箱有限公司 | Washing machine control method and device and washing machine |
| CN114622378A (en) * | 2022-01-21 | 2022-06-14 | 珠海格力电器股份有限公司 | Eccentricity reverse calibration method and drum washing machine detection device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5267456A (en) * | 1990-06-26 | 1993-12-07 | Sanyo Electric Co., Ltd. | Drum-type washing machine |
| KR20050076526A (en) * | 2004-01-20 | 2005-07-26 | 엘지전자 주식회사 | Apparatus sensing partial disposition for drum washing machine |
| CN101082168A (en) * | 2006-05-31 | 2007-12-05 | 博西华电器（江苏）有限公司 | Control method for barrel washing machine dehydration procedure |
| CN103451891A (en) * | 2013-09-03 | 2013-12-18 | 无锡小天鹅通用电器有限公司 | Method for detecting eccentric load of roller washing machine by vibrating sensor |
| CN105603689A (en) * | 2016-02-26 | 2016-05-25 | 青岛海尔科技有限公司 | Eccentricity detection method and device of pulsator washing machine, suspender system and pulsator washing machine |
| CN111962256A (en) * | 2019-05-20 | 2020-11-20 | 青岛海尔智能技术研发有限公司 | Washing machine eccentric position detection device and method and dehydration control method |
-
2021
- 2021-07-06 CN CN202110772234.8A patent/CN113403803A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5267456A (en) * | 1990-06-26 | 1993-12-07 | Sanyo Electric Co., Ltd. | Drum-type washing machine |
| KR20050076526A (en) * | 2004-01-20 | 2005-07-26 | 엘지전자 주식회사 | Apparatus sensing partial disposition for drum washing machine |
| CN101082168A (en) * | 2006-05-31 | 2007-12-05 | 博西华电器（江苏）有限公司 | Control method for barrel washing machine dehydration procedure |
| CN103451891A (en) * | 2013-09-03 | 2013-12-18 | 无锡小天鹅通用电器有限公司 | Method for detecting eccentric load of roller washing machine by vibrating sensor |
| CN105603689A (en) * | 2016-02-26 | 2016-05-25 | 青岛海尔科技有限公司 | Eccentricity detection method and device of pulsator washing machine, suspender system and pulsator washing machine |
| CN111962256A (en) * | 2019-05-20 | 2020-11-20 | 青岛海尔智能技术研发有限公司 | Washing machine eccentric position detection device and method and dehydration control method |
Non-Patent Citations (1)
| Title |
|---|
| 郭淑宁, 吉林大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113789638A (en) * | 2021-10-11 | 2021-12-14 | 海信（山东）冰箱有限公司 | Washing machine control method and device and washing machine |
| CN114622378A (en) * | 2022-01-21 | 2022-06-14 | 珠海格力电器股份有限公司 | Eccentricity reverse calibration method and drum washing machine detection device |
| CN114622378B (en) * | 2022-01-21 | 2023-03-07 | 珠海格力电器股份有限公司 | Eccentricity reverse calibration method and drum washing machine detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108755009B (en) | Operation control method, system, device and storage medium for clothes processing device | |
| CN113403803A (en) | Washing machine dehydration method and washing machine | |
| JP4943772B2 (en) | Washing machine and cloth amount calculation method | |
| US7451510B2 (en) | Washing machine and method of performing spinning operation | |
| CN100540791C (en) | The method of tumbling-box washing machine and detection clothes weight thereof | |
| EP2000576A2 (en) | Washing machine and method of controlling the same | |
| CN108547116B (en) | Operation control method, system, device and storage medium for clothes processing device | |
| CN107201626B (en) | Drum washing machine and dehydration control method and device thereof and machine readable storage medium | |
| US20070039105A1 (en) | Apparatus for sensing vibration of washing machine and method thereof | |
| CN106149279A (en) | A kind of control method for washing machine and washing machine | |
| US20090165218A1 (en) | Washing machine and method for controlling the same | |
| CN108774849B (en) | Operation control method and system for clothes processing device and storage medium | |
| DE112014002821T5 (en) | drum washing machine | |
| CN111485368A (en) | Washing machine and dewatering method and device of clothes treatment device | |
| CN110735289A (en) | Method for detecting eccentricity of washing machine, washing machine eccentricity detection device, storage medium and washing machine | |
| CN108755008B (en) | Load inertia detection method, system and device of clothes treatment device | |
| CN110273260B (en) | Non-sensing drum washing machine eccentricity and weighing-based acquisition method | |
| JP4941319B2 (en) | Washing machine, drum rotation speed control method and program | |
| US20080156094A1 (en) | Systems and methods for detecting out-of-balance conditions in electronically controlled motors | |
| CN113235267B (en) | Washing machine dehydration control method and device and washing machine | |
| CN113668186A (en) | Washing machine dehydration method and washing machine | |
| KR100672604B1 (en) | Method for controlling drum type wahing machine for dewatering the laundry and apparatus thereof | |
| CN113403802A (en) | Eccentric position recognition method, washing machine, dehydration control method, and storage medium | |
| CN113668183A (en) | Washing machine and dewatering control method thereof | |
| EP1461487A1 (en) | Method for determining unbalanced load |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210917 |