CN111850961B - Washing machine and foam detection method and device thereof - Google Patents
Washing machine and foam detection method and device thereof Download PDFInfo
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- CN111850961B CN111850961B CN201910312017.3A CN201910312017A CN111850961B CN 111850961 B CN111850961 B CN 111850961B CN 201910312017 A CN201910312017 A CN 201910312017A CN 111850961 B CN111850961 B CN 111850961B
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- 238000005406 washing Methods 0.000 title claims abstract description 97
- 239000006260 foam Substances 0.000 title claims abstract description 89
- 238000001514 detection method Methods 0.000 title claims abstract description 43
- 238000006073 displacement reaction Methods 0.000 claims abstract description 170
- 230000008859 change Effects 0.000 claims abstract description 86
- 238000005187 foaming Methods 0.000 claims description 19
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 description 8
- 230000009471 action Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000003599 detergent Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 208000005156 Dehydration Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
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
- D06F21/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement
-
- 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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/06—Arrangements for preventing or destroying scum
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
A washing machine and a foam detection method and a foam detection device thereof, wherein the foam detection method of the washing machine comprises the following steps: obtaining the vertical displacement average value of the outer cylinder of the washing machine in each rotating speed cycle; calculating the absolute value of the vertical displacement change rate of the vertical displacement average value of the outer cylinder relative to the vertical displacement reference value of the outer cylinder in each rotating speed cycle; the vertical displacement reference value of the outer cylinder is a vertical displacement average value of m rotating speed cycles before foam appears; and when the absolute value of the vertical displacement change rate is larger than a set change rate threshold value, determining that the high bubble phenomenon occurs. By adopting the scheme, the foam detection precision can be improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of washing machines, in particular to a washing machine and a foam detection method and device thereof.
Background
Because of the easy foaming property of the liquid laundry detergent in the market and the use habit of users, a large amount of foam is often generated in the washing process, which is called as a high foaming phenomenon for short. When the high foaming phenomenon occurs, a large amount of foam may remain in the laundry and the tub.
At present, foam detection is usually performed according to the change of pressure value in the cylinder in the drainage and dehydration stage, but with certain hysteresis. If the foam amount is excessive in the main washing stage, overflow or foam overflow is liable to occur.
Disclosure of Invention
The invention aims to provide a high-foam phenomenon detection method with high accuracy.
In order to solve the above technical problems, an embodiment of the present invention provides a foam detection method for a washing machine, including: obtaining the vertical displacement average value of the outer cylinder of the washing machine in each rotating speed cycle; calculating the absolute value of the vertical displacement change rate of the vertical displacement average value of the outer cylinder relative to the vertical displacement reference value of the outer cylinder in each rotating speed cycle; the vertical displacement reference value of the outer cylinder is a vertical displacement average value of m rotating speed cycles before foam appears; and when the absolute value of the vertical displacement change rate is larger than a set change rate threshold value, determining that the high bubble phenomenon occurs.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
and determining the absolute value of the change rate of the vertical displacement of the outer cylinder in each rotating speed cycle according to the vertical displacement average value of the outer cylinder of the washing machine in each rotating speed cycle relative to the vertical displacement reference value of the outer cylinder. And when the absolute value of the vertical displacement change rate of the outer cylinder in a certain rotating speed cycle is larger than a set change rate threshold value, determining that the high-foam phenomenon occurs. The high-foam phenomenon can be monitored in real time in the washing stage, and the displacement reference value of the outer cylinder is the average value of vertical displacement of m rotating speed cycles before foam appears, so that the influence of factors such as the type and the weight of clothes on foam detection can be avoided, and the detection accuracy of the high-foam phenomenon can be improved.
Optionally, after determining that the high foaming phenomenon occurs, the method further includes: recording the time of the high foaming phenomenon, and monitoring the duration time of the high foaming phenomenon; and when the duration of the high-foam phenomenon reaches the preset duration, executing the foam removing operation.
Optionally, the washing machine comprises a rotary inner cylinder and an outer cylinder positioned outside the inner cylinder, and the inner cylinder alternately rotates clockwise and anticlockwise during the washing process; the calculating of the absolute value of the vertical displacement change rate of the vertical displacement average value of the outer cylinder relative to the vertical displacement reference value of the outer cylinder in each rotating speed cycle comprises at least one of the following steps: calculating the absolute value of the change rate of the vertical displacement of the outer cylinder when the inner cylinder rotates clockwise according to the average value of the vertical displacement of the outer cylinder in each rotating speed cycle when the inner cylinder rotates clockwise and the reference value of the vertical displacement of the outer cylinder when the inner cylinder rotates clockwise; and calculating the absolute value of the change rate of the vertical displacement of the outer cylinder when the inner cylinder rotates anticlockwise according to the average value of the vertical displacement of the outer cylinder in each rotating speed cycle when the inner cylinder rotates anticlockwise and the reference value of the vertical displacement of the outer cylinder when the inner cylinder rotates anticlockwise.
Optionally, when the absolute value of the vertical displacement change rate is greater than a set change rate threshold, determining that the high bubble phenomenon occurs includes: when the inner cylinder rotates clockwise, the absolute value of the vertical displacement change rate of the outer cylinder is larger than a set first change rate threshold; and/or when the inner cylinder rotates anticlockwise, determining that the high bubble phenomenon occurs when the absolute value of the vertical displacement change rate of the outer cylinder is larger than a set second change rate threshold value. The influence of different arrangements of lifting ribs arranged in the inner cylinder of different types of washing machines on the displacement of the outer cylinder in the vertical direction can be comprehensively considered, and the accuracy and the sensitivity of judging the high-foam phenomenon are further improved.
The embodiment of the invention also provides a foam detection device of the washing machine, which comprises: an acquisition unit adapted to acquire a vertical displacement average value of an outer tub of the washing machine in each rotation speed cycle; a calculating unit adapted to calculate an absolute value of a vertical displacement change rate of a vertical displacement average value of the outer tub with respect to a vertical displacement reference value of the outer tub in each rotation speed cycle; the vertical displacement reference value of the outer cylinder is a vertical displacement average value of m rotating speed cycles before foam appears; and the determining unit is suitable for determining that the high bubble phenomenon occurs when the absolute value of the vertical displacement change rate is larger than a set change rate threshold value.
Optionally, the foam detection device of the washing machine further comprises: the monitoring unit is suitable for recording the time of the high-foam phenomenon after the high-foam phenomenon is determined to occur by the determining unit and monitoring the duration time of the high-foam phenomenon; and the execution unit is suitable for executing the defoaming operation after the duration of the high-foam phenomenon reaches the preset duration.
Optionally, the washing machine comprises a rotary inner cylinder and an outer cylinder positioned outside the inner cylinder, wherein the inner cylinder alternately rotates clockwise and counterclockwise during washing; the calculating unit is suitable for calculating the absolute value of the change rate of the vertical displacement of the outer cylinder when the inner cylinder rotates clockwise according to the average value of the vertical displacement of the outer cylinder in each rotating speed cycle when the inner cylinder rotates clockwise and the reference value of the vertical displacement of the outer cylinder when the inner cylinder rotates clockwise; and/or calculating the absolute value of the change rate of the vertical displacement of the outer cylinder when the inner cylinder rotates anticlockwise according to the average value of the vertical displacement of the outer cylinder in each rotating speed cycle when the inner cylinder rotates anticlockwise and the reference value of the vertical displacement of the outer cylinder when the inner cylinder rotates anticlockwise.
Optionally, the determining unit is adapted to determine that, when the inner cylinder rotates clockwise, an absolute value of a vertical displacement change rate of the outer cylinder is greater than a set first change rate threshold; and/or when the inner cylinder rotates anticlockwise, determining that the high bubble phenomenon occurs when the absolute value of the vertical displacement change rate of the outer cylinder is larger than a set second change rate threshold value.
The embodiment of the invention also provides a foam detection device of the washing machine, which comprises a memory and a processor, wherein the memory stores computer instructions capable of running on the processor, and the processor executes the steps of the foam detection method of any washing machine when running the computer instructions.
The embodiment of the invention also provides a washing machine, which comprises: the foam detection device comprises a rotary inner cylinder, an outer cylinder arranged outside the inner cylinder and any foam detection device of the washing machine.
Drawings
Fig. 1 is a flowchart of a foam detection method of a washing machine in an embodiment of the present invention;
fig. 2 is a schematic structural view of a foam detecting apparatus of a washing machine in accordance with an embodiment of the present invention.
Detailed Description
In order to make the above objects, features and advantages of the embodiments of the present invention more comprehensible, the following detailed description of the embodiments of the present invention refers to the accompanying drawings.
Referring to fig. 1, a flowchart of a foam detection method of a washing machine in an embodiment of the present invention is provided. The method specifically comprises the following steps:
and 11, obtaining a vertical displacement average value of the outer cylinder of the washing machine in each rotating speed cycle.
In a specific implementation, the washing machine can comprise an outer cylinder and an inner cylinder, wherein the inner cylinder is positioned in the outer cylinder, and when the washing machine works, the motor can drive the inner cylinder to rotate. In the washing process, the inner cylinder circularly rotates according to the set rotating speed, and corresponding rotating speed, steering and rotating-stopping ratio are set in each speed circulation.
For example, after the ith rotation speed cycle, the inner drum rotates clockwise for a period of time T1, then rotates counterclockwise for a period of time T2, and then rotates counterclockwise for a period of time T3, and then stops for a period of time T4. During the time period T1 of the clockwise rotation of the inner cylinder, the inner cylinder rotates clockwise for a plurality of circles. The inner barrel rotates counter-clockwise for a number of turns within the inner barrel counter-clockwise time period T3. The values of T1, T2, T3 and T4 can be set according to actual requirements, and T1 and T3 can be the same or different; t2 and T4 may be the same or different.
When the drum-type washing machine washes, water with detergent (called washing liquid for short) is contained in the outer drum and the inner drum, clothes are in the inner drum, a plurality of lifting ribs are axially arranged in the inner drum, and the clothes are in a semi-soaking state in the inner drum. The inner cylinder of the washing machine regularly rotates clockwise and anticlockwise under the drive of the motor during washing, the washed clothes are lifted to be higher than the washing liquid level (the highest point is best) under the action of a plurality of lifting ribs in the inner cylinder, then the clothes fall into the washing liquid freely under the action of self gravity, and the mechanical force of falling is generated, and the outer cylinder generates certain displacement in the vertical direction under the action of the mechanical force of falling of the clothes. Along with the continuous clockwise and anticlockwise operation of the inner cylinder, clothes are repeatedly lifted and fallen, and continuously collide with the washing liquid, so that the purposes of decontamination and cleaning are achieved.
In a specific implementation, each time the inner cylinder rotates, the outer cylinder is correspondingly displaced in a vertical direction, so that in one revolution, the outer cylinder is correspondingly displaced in a plurality of vertical directions. The average value of the vertical displacement of the outer cylinder of the washing machine in each rotation speed cycle can be obtained according to a plurality of vertical displacements corresponding to the outer cylinder.
In the embodiment of the invention, a displacement sensor can be used for collecting the vertical displacement signal of the outer cylinder, and the vertical displacement of the outer cylinder can be obtained according to the collected displacement signal. The displacement sensor may be a contact type displacement sensor or a non-contact type displacement sensor.
In specific implementation, the obtained vertical displacement signals of the outer cylinder in each rotating speed cycle can be processed, the corresponding displacement signals when the rotating speed of the motor is 0 can be removed, the displacement signals in a period of time before the rotating speed is 0 and the displacement signals in a period of time after the rotating speed is 0 can be removed, the displacement signals after the removing processing are processed to obtain the displacement average value of the outer cylinder in the vertical direction, so that the influence of corresponding data on the vertical displacement average value of the outer cylinder in the corresponding irregular washing state when the motor is started and stopped can be avoided, and the data reliability of the obtained vertical displacement average value of the outer cylinder can be further improved.
And step 12, calculating the absolute value of the vertical displacement change rate of the vertical displacement average value of the outer cylinder relative to the vertical displacement reference value of the outer cylinder in each rotating speed cycle.
In the specific implementation, in the normal washing process of the washing machine, the outer cylinder is influenced by the clothes in the inner cylinder, and certain displacement can be generated in the vertical direction. During the washing process, when the bubbles are generated, friction between the laundry and the inner tub is reduced. When a large amount of foam is generated, the mixed liquid of the foam and water can generate supporting buoyancy for the clothes, so that the whole gravity center of the clothes is improved, the lifted height of the clothes is reduced in the rotation process of the inner cylinder, the buoyancy of the mixed liquid can be influenced when the clothes fall, the mechanical force for the clothes to beat is weakened, and the vertical displacement of the outer cylinder is reduced relative to the vertical displacement before the foam appears.
The vertical displacement of the outer cylinder in m rotation speed cycles before the occurrence of foam can be used as a vertical displacement reference value of the outer cylinder, and the absolute value of the vertical displacement change rate of the vertical displacement average value of the outer cylinder relative to the vertical displacement reference value of the outer cylinder in each rotation speed cycle is calculated. During each washing, the vertical displacement reference value of the outer barrel corresponding to the current washing can be calculated according to the vertical displacement of the outer barrel in m rotating speed cycles before foam appears. When the factors such as the type of clothes put in each washing, the weight of the clothes, the adopted washing mode or the water quantity in the inner cylinder are different, the vertical displacement reference values of the outer cylinder are correspondingly obtained to be different, so that the vertical displacement reference values of the outer cylinder adopted in the foam detection can comprehensively consider the influencing factors in each washing process in real time, and the accuracy of the foam detection can be improved.
In the embodiment of the invention, taking the ith rotation speed cycle as an example, the following formula (1) and formula (2) can be adopted to calculate the absolute value Y of the vertical displacement change rate of the vertical displacement average value of the outer cylinder relative to the vertical displacement reference value of the outer cylinder in the ith rotation speed cycle n 。
Wherein X is n Is the vertical displacement average value X of the outer cylinder in the nth rotating speed cycle 0 X is the vertical displacement mean value of the outer cylinder m For vertical displacement of the outer cylinder in the mth revolution before the occurrence of foam.
And step 13, determining that the high bubble phenomenon occurs when the absolute value of the vertical displacement change rate is larger than a set change rate threshold value.
In a specific implementation, after the absolute value of the vertical displacement change rate is calculated, whether the high bubble phenomenon occurs may be determined according to the absolute value of the vertical displacement change rate and a set change rate threshold. In the washing process of the washing machine, the high foam phenomenon appears when the foam quantity reaches a set quantity.
And when the absolute value of the vertical displacement change rate is larger than the set change rate threshold value, determining that the high bubble phenomenon occurs.
According to the scheme, the absolute value of the vertical displacement change rate of the outer barrel in each rotating speed cycle is determined according to the vertical displacement average value of the outer barrel of the washing machine in each rotating speed cycle relative to the vertical displacement reference value of the outer barrel. And when the absolute value of the vertical displacement change rate of the outer cylinder in a certain rotating speed cycle is larger than a set change rate threshold value, determining that the high-foam phenomenon occurs. The high-foam phenomenon can be monitored in real time in the washing stage, and the displacement reference value of the outer cylinder is the average value of vertical displacement of m rotating speed cycles before foam appears, so that the influence of factors such as the type and the weight of clothes on foam detection can be avoided, and the detection accuracy of the high-foam phenomenon can be improved.
In a specific implementation, after determining that the high-foam phenomenon occurs, the time of the high-foam phenomenon can be recorded, and the duration of the high-foam phenomenon is monitored; when the duration of the high-foam phenomenon reaches the preset duration, the foam removing operation is executed, so that when the high-foam phenomenon occurs, the foam removing treatment can be timely carried out according to actual requirements, and the overflow or the overflow can be avoided.
Because the arrangement of the lifting ribs arranged in the inner cylinders of different types of washing machines is different, some lifting ribs can be symmetrically arranged, and some lifting ribs are asymmetrically arranged. When the lifting ribs in the inner cylinder are asymmetrically arranged, due to different structures at two sides, in the washing process of the washing machine, the inner cylinder alternately rotates clockwise and anticlockwise, and the acting force of the lifting ribs on clothes and mixed liquid in the inner cylinder is different, so that the influence degree on the displacement of the outer cylinder in the vertical direction is different. Therefore, in order to improve the accuracy and sensitivity of the judgment of the high bubble phenomenon, in some embodiments of the present invention, in the step 12, when calculating the absolute value of the vertical displacement change rate of the vertical displacement average value of the outer cylinder relative to the vertical displacement reference value of the outer cylinder in each rotation speed cycle, at least one of the following may be included:
in one embodiment of the present invention, the absolute value of the change rate of the vertical displacement of the outer cylinder when the inner cylinder rotates clockwise is calculated based on the average value of the vertical displacement of the outer cylinder in each rotation speed cycle when the inner cylinder rotates clockwise and the reference value of the vertical displacement of the outer cylinder when the inner cylinder rotates clockwise.
In another embodiment of the present invention, the absolute value of the change rate of the vertical displacement of the outer cylinder when the inner cylinder rotates in the counterclockwise direction is calculated based on the average value of the vertical displacement of the outer cylinder in each rotation speed cycle when the inner cylinder rotates in the counterclockwise direction and the reference value of the vertical displacement of the outer cylinder when the inner cylinder rotates in the counterclockwise direction.
In still another embodiment of the present invention, an absolute value of a change rate of vertical displacement of the outer cylinder when the inner cylinder rotates clockwise is calculated from a mean value of vertical displacement of the outer cylinder in each rotation speed cycle when the inner cylinder rotates clockwise and a reference value of vertical displacement of the outer cylinder when the inner cylinder rotates clockwise, and an absolute value of a change rate of vertical displacement of the outer cylinder when the inner cylinder rotates counterclockwise is calculated from a mean value of vertical displacement of the outer cylinder in each rotation speed cycle when the inner cylinder rotates counterclockwise and a reference value of vertical displacement of the outer cylinder when the inner cylinder rotates counterclockwise.
Accordingly, in step 13, when the absolute value of the vertical displacement change rate is greater than the set change rate threshold, it is determined that the high bubble phenomenon occurs, which may include the following cases:
in an embodiment of the present invention, when the inner cylinder rotates clockwise, the absolute value of the change rate of the vertical displacement of the outer cylinder is greater than a set first change rate threshold value, and it is determined that the high foaming phenomenon occurs.
In a specific implementation, the first variation threshold is a vertical displacement average value of the corresponding outer cylinder when the inner cylinder rotates clockwise in m rotation speed cycles before the foam appears.
In another embodiment of the present invention, when the inner cylinder rotates in the counterclockwise direction, the absolute value of the change rate of the vertical displacement of the outer cylinder is greater than a set second change rate threshold value, and it is determined that the high foaming phenomenon occurs.
In a specific implementation, the second variation threshold is a vertical displacement average value of the corresponding outer cylinder when the inner cylinder rotates counterclockwise in m rotation speed cycles before the foam appears.
In still another embodiment of the present invention, when the inner cylinder rotates clockwise, an absolute value of a change rate of vertical displacement of the outer cylinder is greater than a set first change rate threshold, and when the inner cylinder rotates counterclockwise, an absolute value of a change rate of vertical displacement of the outer cylinder is greater than a set second change rate threshold, determining that a high foaming phenomenon occurs.
In a specific implementation, when the inner cylinder rotates clockwise, the time of high bubbles is recorded, and when the duration of the high bubble phenomenon in the clockwise direction reaches a set duration, the bubble removing operation is performed.
In a specific implementation, when the inner cylinder rotates in the counterclockwise direction, the time of occurrence of high bubbles is recorded, and when the duration of the high bubble phenomenon in the counterclockwise direction reaches a set duration, the bubble removing operation is executed, wherein the duration of the high bubble phenomenon in the clockwise direction and the duration of the high bubble phenomenon in the counterclockwise direction can be the same or different, and the time can be specifically set according to the type of the washing machine, the washing mode and other practical application scenes.
In order to facilitate better understanding and implementation of the present invention by those skilled in the art, the embodiment of the present invention further provides a foam detection apparatus for a washing machine.
Referring to fig. 2, a schematic diagram of a foam detection apparatus of a washing machine according to an embodiment of the present invention is provided. The foam detection apparatus 20 of the washing machine may include: an acquisition unit 21, a calculation unit 22, and a determination unit 23, wherein:
an acquisition unit 21 adapted to acquire a vertical displacement average value of an outer tub of the washing machine in each rotation speed cycle;
a calculation unit 22 adapted to calculate an absolute value of a vertical displacement change rate of a vertical displacement average value of the outer tub with respect to a vertical displacement reference value of the outer tub in each rotation speed cycle; the vertical displacement reference value of the outer cylinder is a vertical displacement average value of m rotating speed cycles before foam appears;
a determining unit 23 adapted to determine that a high bubble phenomenon occurs when the absolute value of the vertical displacement change rate is greater than a set change rate threshold.
In an embodiment, the foam detection apparatus 20 of the washing machine may further include: a monitoring unit 24 adapted to record the time of occurrence of the high foaming phenomenon after the determination unit determines that the high foaming phenomenon occurs, and monitor the duration of the high foaming phenomenon; the execution unit 25 is adapted to execute the de-bubbling operation when the duration of the high bubbling phenomenon reaches a preset duration.
In a specific implementation, the washing machine comprises a rotary inner cylinder and an outer cylinder positioned outside the inner cylinder, wherein the inner cylinder alternately rotates clockwise and anticlockwise in the washing process; the calculating unit 22 is adapted to calculate an absolute value of a change rate of vertical displacement of the outer cylinder when the inner cylinder rotates clockwise, based on a vertical displacement average value of the outer cylinder in each rotation speed cycle when the inner cylinder rotates clockwise and a vertical displacement reference value of the outer cylinder when the inner cylinder rotates clockwise; and/or calculating the absolute value of the change rate of the vertical displacement of the outer cylinder when the inner cylinder rotates anticlockwise according to the average value of the vertical displacement of the outer cylinder in each rotating speed cycle when the inner cylinder rotates anticlockwise and the reference value of the vertical displacement of the outer cylinder when the inner cylinder rotates anticlockwise.
In a specific implementation, the determining unit 23 is adapted to, when the inner cylinder rotates clockwise, the absolute value of the vertical displacement change rate of the outer cylinder is greater than a set first change rate threshold; and/or when the inner cylinder rotates anticlockwise, determining that the high bubble phenomenon occurs when the absolute value of the vertical displacement change rate of the outer cylinder is larger than a set second change rate threshold value.
In specific implementation, the working principle and the working flow of the foam detection apparatus 20 of the washing machine may refer to the description in the foam detection method of the washing machine provided in the foregoing embodiment of the present invention, and will not be described herein.
The embodiment of the invention also provides a foam detection device of the washing machine, which comprises a memory and a processor, wherein the memory stores computer instructions capable of running on the processor, and the processor executes the steps of any one of the foam detection methods of the washing machine provided by the embodiment of the invention when running the computer instructions.
An embodiment of the present invention provides a washing machine including: the device comprises a rotary inner cylinder, an outer cylinder arranged outside the inner cylinder and a foam detection device of the washing machine. The foam detection apparatus of a washing machine may employ the foam detection apparatus 20 of any one of the washing machines provided in the above embodiments of the present invention.
Those of ordinary skill in the art will appreciate that all or a portion of the steps in the various methods of the above embodiments may be implemented by a program to instruct related hardware, the program may be stored in any computer readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, etc.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (10)
1. A foam detection method of a washing machine, comprising:
obtaining the average value of the vertical displacement of the outer cylinder of the washing machine in each rotating speed cycle in a washing process;
calculating the absolute value of the vertical displacement change rate of the vertical displacement average value of the outer cylinder relative to the vertical displacement reference value of the outer cylinder in each rotating speed cycle in the washing process; the vertical displacement reference value of the outer cylinder is the vertical displacement average value of m rotating speed cycles before foam appears in the washing process; and when the absolute value of the vertical displacement change rate is larger than a set change rate threshold value, determining that the high bubble phenomenon occurs.
2. The foam detection method of a washing machine according to claim 1, further comprising, after determining that the high foaming phenomenon occurs:
recording the time of the high foaming phenomenon, and monitoring the duration time of the high foaming phenomenon;
and when the duration of the high-foam phenomenon reaches the preset duration, executing the foam removing operation.
3. The foam detection method of a washing machine according to claim 1 or 2, wherein the washing machine includes a rotary drum and an outer drum located outside the drum, the drum alternately rotating clockwise and counterclockwise during washing; the calculating of the absolute value of the vertical displacement change rate of the vertical displacement average value of the outer cylinder relative to the vertical displacement reference value of the outer cylinder in each rotating speed cycle comprises at least one of the following steps:
calculating the absolute value of the change rate of the vertical displacement of the outer cylinder when the inner cylinder rotates clockwise according to the average value of the vertical displacement of the outer cylinder in each rotating speed cycle when the inner cylinder rotates clockwise and the reference value of the vertical displacement of the outer cylinder when the inner cylinder rotates clockwise;
and calculating the absolute value of the change rate of the vertical displacement of the outer cylinder when the inner cylinder rotates anticlockwise according to the average value of the vertical displacement of the outer cylinder in each rotating speed cycle when the inner cylinder rotates anticlockwise and the reference value of the vertical displacement of the outer cylinder when the inner cylinder rotates anticlockwise.
4. The foam detection method of a washing machine as claimed in claim 3, wherein the determining that a high foaming phenomenon occurs when the absolute value of the vertical displacement change rate is greater than a set change rate threshold value comprises:
when the inner cylinder rotates clockwise, the absolute value of the vertical displacement change rate of the outer cylinder is larger than a set first change rate threshold; and/or the number of the groups of groups,
when the inner cylinder rotates anticlockwise, the absolute value of the vertical displacement change rate of the outer cylinder is larger than a set second change rate threshold value, and the occurrence of the high-foam phenomenon is determined.
5. A foam detection apparatus (20) of a washing machine, comprising:
an acquisition unit (21) adapted to acquire a vertical displacement average value of an outer tub of the washing machine in each rotation speed cycle in a washing process;
a calculating unit (22) adapted to calculate an absolute value of a vertical displacement change rate of a vertical displacement average value of the outer tub with respect to a vertical displacement reference value of the outer tub in each rotation speed cycle in the washing process; the vertical displacement reference value of the outer cylinder is the vertical displacement average value of m rotating speed cycles before foam appears in the washing process;
a determination unit (23) adapted to determine that a high bubble phenomenon occurs when the absolute value of the vertical displacement change rate is greater than a set change rate threshold.
6. The foam detection apparatus (20) of a washing machine according to claim 5, further comprising:
a monitoring unit (24) adapted to record the time of occurrence of the high-foaming phenomenon after the occurrence of the high-foaming phenomenon is determined by the determining unit, and monitor the duration of the high-foaming phenomenon;
and the execution unit (25) is suitable for executing the defoaming operation after the duration of the high-foam phenomenon reaches the preset duration.
7. The foam detection apparatus (20) of a washing machine according to claim 5 or 6, characterized in that the washing machine comprises a rotating drum and an outer drum located outside the drum, the drum alternately rotating clockwise and counterclockwise during washing; the calculating unit (22) is suitable for calculating the absolute value of the change rate of the vertical displacement of the outer cylinder when the inner cylinder rotates clockwise according to the average value of the vertical displacement of the outer cylinder in each rotating speed cycle when the inner cylinder rotates clockwise and the reference value of the vertical displacement of the outer cylinder when the inner cylinder rotates clockwise; and/or calculating the absolute value of the change rate of the vertical displacement of the outer cylinder when the inner cylinder rotates anticlockwise according to the average value of the vertical displacement of the outer cylinder in each rotating speed cycle when the inner cylinder rotates anticlockwise and the reference value of the vertical displacement of the outer cylinder when the inner cylinder rotates anticlockwise.
8. The foam detection apparatus (20) of a washing machine according to claim 7, wherein the determination unit (23) is adapted to, when the inner tub is rotated clockwise, an absolute value of a vertical displacement change rate of the outer tub is greater than a set first change rate threshold; and/or when the inner cylinder rotates anticlockwise, determining that the high bubble phenomenon occurs when the absolute value of the vertical displacement change rate of the outer cylinder is larger than a set second change rate threshold value.
9. A suds detecting apparatus of a washing machine comprising a memory and a processor, said memory having stored thereon computer instructions executable on said processor, characterized in that said processor executes the steps of the suds detecting method of a washing machine according to any of claims 1 to 4 when said computer instructions are executed by said processor.
10. A washing machine, comprising: a rotary inner tub, an outer tub located outside the inner tub, and a foam detecting apparatus of a washing machine as claimed in any one of claims 6 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910312017.3A CN111850961B (en) | 2019-04-17 | 2019-04-17 | Washing machine and foam detection method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910312017.3A CN111850961B (en) | 2019-04-17 | 2019-04-17 | Washing machine and foam detection method and device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111850961A CN111850961A (en) | 2020-10-30 |
| CN111850961B true CN111850961B (en) | 2023-12-22 |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1814897A (en) * | 2005-02-02 | 2006-08-09 | 三星电子株式会社 | Washing machine and foam sensing method thereof |
| WO2007074037A1 (en) * | 2005-12-29 | 2007-07-05 | Arcelik Anonim Sirketi | A washing machine and a control method |
| CN102535085A (en) * | 2010-11-24 | 2012-07-04 | 三星电子株式会社 | Washing machine and method to detect suds thereof |
| JP2014097092A (en) * | 2012-11-13 | 2014-05-29 | Panasonic Corp | Washing machine |
| CN104382586A (en) * | 2014-11-28 | 2015-03-04 | 深圳邦健生物医疗设备股份有限公司 | Electric shock signal detecting method and device |
| CN106350968A (en) * | 2016-10-17 | 2017-01-25 | 珠海格力电器股份有限公司 | Method and system for preventing foam from overflowing |
| CN107099973A (en) * | 2017-05-31 | 2017-08-29 | 广东威灵电机制造有限公司 | Unbalance detection, washing machine and the storage medium of washing machine drum body |
| CN107385769A (en) * | 2016-04-21 | 2017-11-24 | 伊莱克斯家用电器股份公司 | Method for detecting foam in washing machine |
| CN108457041A (en) * | 2018-04-27 | 2018-08-28 | 无锡和晶科技股份有限公司 | A kind of foam detecting method of variable-frequency washing machine |
| EP3382083A1 (en) * | 2017-03-27 | 2018-10-03 | Vestel Elektronik Sanayi ve Ticaret A.S. | Method for determining foam in a washing machine |
| CN109468798A (en) * | 2017-09-08 | 2019-03-15 | 青岛海尔滚筒洗衣机有限公司 | Defoaming method for laundry treatment apparatus and laundry treatment apparatus |
| CN109487484A (en) * | 2017-09-11 | 2019-03-19 | 无锡小天鹅股份有限公司 | Washing machine and control method for washing machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007052837A1 (en) * | 2007-11-06 | 2009-05-07 | BSH Bosch und Siemens Hausgeräte GmbH | Process for treating laundry in a household washing machine with a foam-forming liquor |
| EP2849008B1 (en) * | 2013-09-11 | 2019-04-03 | Electrolux Appliances Aktiebolag | Foam-reducing procedure in a washing machine during a spinning cycle |
-
2019
- 2019-04-17 CN CN201910312017.3A patent/CN111850961B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1814897A (en) * | 2005-02-02 | 2006-08-09 | 三星电子株式会社 | Washing machine and foam sensing method thereof |
| WO2007074037A1 (en) * | 2005-12-29 | 2007-07-05 | Arcelik Anonim Sirketi | A washing machine and a control method |
| CN102535085A (en) * | 2010-11-24 | 2012-07-04 | 三星电子株式会社 | Washing machine and method to detect suds thereof |
| JP2014097092A (en) * | 2012-11-13 | 2014-05-29 | Panasonic Corp | Washing machine |
| CN104382586A (en) * | 2014-11-28 | 2015-03-04 | 深圳邦健生物医疗设备股份有限公司 | Electric shock signal detecting method and device |
| CN107385769A (en) * | 2016-04-21 | 2017-11-24 | 伊莱克斯家用电器股份公司 | Method for detecting foam in washing machine |
| CN106350968A (en) * | 2016-10-17 | 2017-01-25 | 珠海格力电器股份有限公司 | Method and system for preventing foam from overflowing |
| EP3382083A1 (en) * | 2017-03-27 | 2018-10-03 | Vestel Elektronik Sanayi ve Ticaret A.S. | Method for determining foam in a washing machine |
| CN107099973A (en) * | 2017-05-31 | 2017-08-29 | 广东威灵电机制造有限公司 | Unbalance detection, washing machine and the storage medium of washing machine drum body |
| CN109468798A (en) * | 2017-09-08 | 2019-03-15 | 青岛海尔滚筒洗衣机有限公司 | Defoaming method for laundry treatment apparatus and laundry treatment apparatus |
| CN109487484A (en) * | 2017-09-11 | 2019-03-19 | 无锡小天鹅股份有限公司 | Washing machine and control method for washing machine |
| CN108457041A (en) * | 2018-04-27 | 2018-08-28 | 无锡和晶科技股份有限公司 | A kind of foam detecting method of variable-frequency washing machine |
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