CN114808390A - Defoaming method for washing equipment - Google Patents

Defoaming method for washing equipment Download PDF

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Publication number
CN114808390A
CN114808390A CN202110089127.5A CN202110089127A CN114808390A CN 114808390 A CN114808390 A CN 114808390A CN 202110089127 A CN202110089127 A CN 202110089127A CN 114808390 A CN114808390 A CN 114808390A
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CN
China
Prior art keywords
preset
height
washing
foam
defoaming
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Pending
Application number
CN202110089127.5A
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Chinese (zh)
Inventor
梁启队
黄本财
单文砚
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Qingdao Haier Drum Washing Machine Co Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Drum Washing Machine Co Ltd
Haier Smart Home Co Ltd
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Application filed by Qingdao Haier Drum Washing Machine Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Drum Washing Machine Co Ltd
Priority to CN202110089127.5A priority Critical patent/CN114808390A/en
Priority to EP21920809.7A priority patent/EP4265834A4/en
Priority to PCT/CN2021/138316 priority patent/WO2022156435A1/en
Publication of CN114808390A publication Critical patent/CN114808390A/en
Pending legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • 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
    • 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 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • 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 
    • D06F33/47—Responding to irregular working conditions, e.g. malfunctioning of pumps 
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/68—Operation mode; Program phase
    • 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
    • D06F2105/08—Draining of washing liquids
    • 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
    • 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
    • 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
    • D06F2105/52—Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Degasification And Air Bubble Elimination (AREA)

Abstract

The invention relates to the technical field of intelligent home furnishing, and particularly provides a defoaming method for washing equipment, aiming at solving the problem that the defoaming effect of the existing washing equipment is not ideal. The defoaming method comprises the following steps: acquiring the foam height in a washing cylinder in the operation process of washing equipment; comparing the foam height with a first preset warning height and a second preset warning height respectively; if the foam height is greater than the first preset warning height but less than the second preset warning height, acquiring the current process stage of the washing equipment; according to the process stage, different defoaming operations are executed, whether defoaming treatment needs to be carried out on the foam in the washing barrel can be judged in advance, the phenomenon that a vent pipe is blocked due to the fact that a large amount of foam is full in the washing barrel is avoided, defoaming treatment can be carried out in a targeted mode, the foam in the washing barrel can be eliminated quickly and effectively, and normal operation of washing equipment is guaranteed.

Description

Defoaming method for washing equipment
Technical Field
The invention relates to the technical field of smart home, and particularly provides a defoaming method for washing equipment.
Background
Washing machines are common home laundry washing apparatuses, and are classified according to washing methods, and the washing machines are roughly classified into pulsator washing machines and drum washing machines. Taking a drum washing machine as an example, generally, before the drum washing machine washes the laundry, a corresponding amount of detergent needs to be added to the washing water. However, when the amount of detergent put into the drum washing machine is excessive, due to reasons such as stirring and water flow impacting the detergent, air is continuously contacted with the detergent, excessive foam is easily generated, if the foam is not removed in time, a large amount of foam is filled in the washing drum, a vent pipe is blocked, the pressure in the drum is too high, and thus water inflow of the drum washing machine is inhibited; and the foam filled in the inner and outer cylinders can generate resistance to cause the overload heating of the motor, the problems of incomplete rinsing, residual foam and the like occur, and the complaint of users is caused.
In order to solve the above problem, in the prior art, when a large amount of foam is filled in the washing drum, the washing drum is controlled to stop rotating until the foam disappears. However, the above defoaming method has low efficiency and lags in treatment, and cannot effectively eliminate foam, thereby reducing the user experience.
Therefore, there is a need in the art for a new defoaming method for washing apparatuses to solve the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem that the defoaming effect of the existing washing equipment is not ideal, the invention provides a defoaming method for washing equipment, wherein the washing equipment comprises a washing drum, and the defoaming method comprises the following steps: acquiring the foam height in the washing cylinder in the operation process of the washing equipment; comparing the foam height with a first preset warning height and a second preset warning height respectively; if the foam height is greater than the first preset warning height but less than the second preset warning height, acquiring a current process stage of the washing equipment; executing different defoaming operations according to the process stage; the first preset warning height is smaller than the second preset warning height.
In the preferred technical solution of the defoaming method, the step of "executing different defoaming operations according to the process stage" specifically includes: if the washing apparatus is in a washing phase, reducing the spin-to-stop ratio of the washing drum to a first spin-to-stop ratio and/or canceling a sloshing operation; after the first preset time, acquiring the foam height in the washing cylinder again; respectively comparing the foam height obtained again with the first preset warning height and the first preset height; selectively controlling the washing equipment to execute the rest set programs or continue to execute the defoaming operation according to the comparison result; the first preset height is larger than the first preset warning height but smaller than the second preset warning height, and the first preset height is larger than or equal to the height of the foam obtained last time.
In a preferred embodiment of the above defoaming method, the step of selectively controlling the washing device to execute the remaining setting program or continue the defoaming operation according to the comparison result specifically includes: if the obtained foam height is larger than or equal to the first preset warning height but smaller than or equal to the first preset height, controlling the washing drum to continuously operate according to the first rotation-stop ratio; reducing an emptying water level of the washing equipment to a first preset emptying water level when the washing equipment performs a water drainage operation after washing is finished, and controlling the washing equipment to perform a rotary water drainage operation when the washing equipment performs a water drainage operation; and reducing the dehydration acceleration of the washing drum to a first preset acceleration when the dehydration operation is performed after the drainage of the washing equipment is finished, and/or reducing the highest dehydration speed of the washing drum to a first preset speed.
In a preferred embodiment of the above defoaming method, the step of selectively controlling the washing device to execute the remaining setting program or continue the defoaming operation according to the comparison result further includes: if the obtained foam height is larger than the first preset height, reducing the rotation-stop ratio of the washing equipment to a second rotation-stop ratio, wherein the second rotation-stop ratio is smaller than the first rotation-stop ratio; reducing the emptying water level of the washing equipment to a second preset emptying water level when the water draining operation is executed after the washing is finished, and controlling the washing equipment to execute the rotary water draining operation when the washing equipment executes the water draining operation; reducing the dehydration acceleration of the washing drum to a second preset acceleration and/or reducing the highest dehydration speed of the washing drum to a second preset speed when the dehydration operation is performed after the drainage of the washing equipment is finished; acquiring a set rinsing frequency of the washing equipment after the dewatering of the washing equipment is finished; judging whether the set rinsing times are smaller than a first preset time or not; if the set rinsing times are less than the first preset times, increasing the rinsing times; and/or if the set rinsing times is greater than or equal to the first preset times, not adjusting the rinsing times.
In a preferred embodiment of the defoaming method, the step of "executing different defoaming operations according to the process stage" further includes: if the washing equipment is in a rinsing stage, reducing the rotation frequency of the washing drum to a preset rotation frequency; after a second preset, acquiring the foam height in the washing cylinder again; respectively comparing the foam height obtained again with the first preset warning height and the second preset height; selectively controlling the washing equipment to execute the rest set programs or continue to execute the defoaming operation according to the comparison result; the second preset height is larger than the first preset warning height but smaller than the second preset warning height, and the second preset height is larger than or equal to the height of the foam obtained last time.
In a preferred embodiment of the above defoaming method, the step of selectively controlling the washing device to execute the remaining setting program or continue the defoaming operation according to the comparison result specifically includes: if the obtained foam height is larger than or equal to the first preset warning height but smaller than or equal to the second preset height, controlling the washing drum to continuously operate according to the preset rotation frequency; reducing the emptying water level of the washing equipment to a third preset emptying water level when the water draining operation is executed after the rinsing operation is finished; after the water drainage of the washing equipment is finished, controlling the washing equipment to perform spray rinsing operation, and controlling the washing equipment to perform rotary water drainage operation; reducing the dehydration acceleration of the washing drum to a third preset acceleration and/or reducing the highest dehydration speed of the washing drum to a third preset speed when the dehydration operation is performed after the drainage of the washing equipment is finished; after the washing equipment finishes dewatering, controlling the washing equipment to perform spray rinsing operation again; after the washing equipment finishes spraying and rinsing again, acquiring the residual rinsing times of the washing equipment; judging whether the residual rinsing times are greater than or equal to a second preset time or not; if the residual rinsing times are more than or equal to the second preset times, controlling the washing equipment to continuously execute rinsing operation; and/or controlling the washing apparatus to finish the operation if the number of times of the remaining rinsing is less than the second preset number of times.
In a preferred embodiment of the above defoaming method, the step of selectively controlling the washing device to execute the remaining setting program or continue the defoaming operation according to the comparison result further includes: if the obtained foam height is larger than the second preset height, controlling the washing drum to stop rotating and enabling the washing equipment to perform drainage operation; controlling the washing apparatus to perform a dehydration operation after the washing apparatus finishes draining; acquiring the residual rinsing times of the washing equipment after the dewatering of the washing equipment is finished; judging whether the residual rinsing times are less than a third preset time or not; if the residual rinsing times are less than the third preset times, acquiring the set rinsing times of the washing equipment; judging whether the set rinsing times are smaller than a fourth preset time or not; and if the set rinsing times are less than the fourth preset times, increasing the rinsing times.
In a preferred embodiment of the above defoaming method, the step of selectively controlling the washing device to execute the remaining setting program or continue the defoaming operation according to the comparison result further includes: if the residual rinsing times are more than or equal to the third preset times, controlling the washing equipment to continuously execute rinsing operation; and/or controlling the washing equipment to finish the operation if the set rinsing times is greater than or equal to the fourth preset times.
In a preferred embodiment of the defoaming method, the defoaming method further includes: and if the foam height obtained again is less than the first preset warning height, controlling the washing equipment to execute the rest set program.
In a preferred embodiment of the defoaming method, the defoaming method further includes: if the foam height is greater than the second preset warning height, controlling the washing drum to stop rotating; and/or if the foam height is smaller than the first preset warning height, the defoaming operation is not executed, and the set program is continuously executed.
As can be understood by those skilled in the art, in a preferred embodiment of the defoaming method of the present invention, the foam height in the washing drum is obtained; comparing the foam height with a first preset warning height and a second preset warning height respectively; if the foam height is greater than the first preset warning height but less than the second preset warning height, acquiring the current process stage of the drum washing machine; according to the process stage, different defoaming operations are executed; wherein the first preset warning height is smaller than the second preset warning height.
Compared with the technical scheme that standing defoaming is only carried out when a large amount of foam is full in the washing drum in the prior art, the foam height is respectively compared with the first preset warning height and the second preset warning height, whether defoaming treatment needs to be carried out on the foam in the washing drum can be pre-judged in advance, and a vent pipe is prevented from being blocked due to the fact that the large amount of foam is full in the washing drum, so that water inlet of the drum washing machine is prevented from being blocked due to overhigh pressure in the washing drum, overload heating of a motor is avoided, and normal operation of the drum washing machine is ensured. When the foam height in the washing drum is greater than the first preset warning height but is less than the second preset warning height, when defoaming treatment is required to be carried out, different defoaming operations are executed according to the progress stage of the drum washing machine, defoaming treatment can be carried out in a targeted manner, the foam in the washing drum can be eliminated quickly and effectively, the residual quantity of the foam on clothes is reduced, the clothes can be rinsed cleanly, and user experience is improved.
Further, in the case that the drum washing machine is in the washing stage, in general, in order to improve the washing effect, the sloshing operation is set and the rotation stop ratio of the washing drum is set higher, so as to improve the water flow strength, therefore, the water flow strength can be reduced by reducing the rotation stop ratio, canceling the sloshing operation and the like, thereby effectively inhibiting the generation of foam and achieving the purpose of defoaming; after the first preset time, according to the comparison result between the obtained foam height and the first preset warning height and the first preset height, the drum washing machine is selectively controlled to execute the rest setting program or continue to execute the defoaming operation, the situation that the defoaming effect does not reach the preset effect is avoided, the foam in the washing drum is prevented from continuously rising to the second preset warning height, the purpose of providing the most reasonable defoaming method for the drum washing machine is achieved, and the user experience is further improved.
Further, in the case that the drum washing machine is in the rinsing stage, in general, in order to improve the rinsing effect, the rotation frequency of the washing drum is set higher to improve the water flow intensity, so as to improve the rinsing effect, and therefore, the water flow intensity can be reduced by reducing the rotation frequency of the washing drum and the like, so that the generation of foam is effectively inhibited, and the purpose of defoaming is achieved; and after the second preset time, selectively controlling the drum washing machine to execute the residual setting program or continue executing the defoaming operation according to the comparison result of the obtained foam height respectively with the first preset warning height and the second preset height, so that the residual setting program is prevented from being executed under the condition that the defoaming effect does not reach the preset effect, the foam in the washing drum is prevented from continuously rising to the second preset warning height, the purpose of providing the most reasonable defoaming method for the drum washing machine is realized, and the user experience is further improved.
Drawings
The defoaming method of the present invention is described below in conjunction with a drum washing machine with reference to the accompanying drawings, in which:
fig. 1 is a main flow diagram of the defoaming method of the present invention;
FIG. 2 is a complete flow diagram of the defoaming method of the present invention;
FIG. 3 is a first flowchart of the defoaming method of the drum washing machine in the washing stage according to the present invention;
FIG. 4 is a second flowchart of the defoaming method of the drum washing machine in the washing stage of the present invention;
FIG. 5 is a third flowchart of the defoaming method for the drum washing machine in the washing stage of the present invention;
FIG. 6 is a first flowchart of the defoaming method of the drum washing machine in the rinsing stage according to the present invention;
FIG. 7 is a second flowchart of the defoaming method of the drum washing machine in the rinsing stage according to the present invention;
FIG. 8 is a third flowchart of the defoaming method for the drum washing machine in the rinsing stage according to the present invention;
FIG. 9 is a logic diagram (one) of the defoaming method of the present invention;
fig. 10 is a logic diagram (ii) of the defoaming method of the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the present invention is described in conjunction with a drum washing machine, the technical solution of the present invention is not limited thereto, and the defoaming method can be obviously applied to other washing apparatuses such as a pulsator washing machine, a washing and drying machine, etc., without departing from the principle and scope of the present invention.
It should be noted that the terms "first," "second," "third," and "fourth" in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Based on the technical problems proposed in the background art, the invention provides a defoaming method for a drum washing machine, which aims to compare the foam height with a first preset warning height and a second preset warning height respectively, so that whether defoaming treatment needs to be carried out on the foam in a washing drum can be pre-judged in advance, and a vent pipe is prevented from being blocked due to the fact that a large amount of foam is filled in the washing drum, so that the phenomenon that water inlet of the drum washing machine is blocked due to overhigh pressure in the washing drum is avoided, the phenomenon that a motor is overloaded and generates heat is avoided, and the normal operation of the drum washing machine is ensured. When the foam height in the washing cylinder is greater than the first warning height of predetermineeing but is less than the second and predetermine when warning height, when needing to carry out the defoaming promptly, according to drum type washing machine's process stage, carry out different defoaming operations, can have pointed references to carry out the defoaming and handle, can be fast, eliminate the foam in the washing cylinder effectively, reduced the amount of residue of foam on the clothing, can be clean with the clothing rinsing, and then improved user experience.
Referring first to fig. 1 and 2, the defoaming method of the present invention will be described. Wherein, fig. 1 is a main flow diagram of the defoaming method of the present invention; fig. 2 is a complete flow diagram of the defoaming method of the present invention.
As shown in FIG. 1, the drum washing machine of the present invention comprises a washing drum including an outer drum and an inner drum rotatably disposed in the outer drum; the defoaming method comprises the following steps:
s100, acquiring the foam height in the washing drum in the operation process of the drum washing machine;
s200, comparing the foam height with a first preset warning height and a second preset warning height respectively;
s300, if the foam height is larger than the first preset warning height but smaller than the second preset warning height, acquiring the current process stage of the drum washing machine;
and S400, executing different defoaming operations according to the process stage.
Wherein, first preset warning height is less than the preset warning height of second, and the preset warning height of second is less than the minimum height when the breather pipe is blockked up to the foam filling in the washing section of thick bamboo, perhaps the preset warning height of second is the height that the breather pipe can not be blockked up to the foam that technical staff in the art set for according to experiment or experience, no matter how to adjust and set up first preset warning height and the preset warning height of second, as long as can predetermine in advance whether need carry out the defoaming treatment to the foam in the washing section of thick bamboo, avoid a large amount of foam filling in the washing section of thick bamboo and jam the breather pipe can.
Wherein, the foam height refers to the height corresponding to the highest position reached by the foam in the washing cylinder.
Preferably, a foam detection port is arranged on the washing cylinder, and a foam detection component for detecting the height of foam in the washing cylinder is arranged at the foam detection port, wherein the foam detection component can be an infrared sensor, an electrode sensor or a floater sensor or other detection components, and no matter what detection component is adopted, the corresponding specific detection method should not constitute any limitation to the invention.
In step S100, the foam height may be detected by the foam detecting member in real time, or may be detected at time intervals by the foam detecting member. The time interval may be 5s, 10s, 15s, etc., and the first time interval is only exemplary and not limiting, and those skilled in the art may flexibly adjust and set the first time interval in practical applications, and in any case, the first time interval may be adjusted and set as long as the foam height can be detected accurately in time.
In step S300, if the height of the foam in the washing tub is greater than the first preset warning height but less than the second preset warning height, for example, the first preset warning height is 200mm, the second preset warning height is 400mm, the detected height of the foam is 210mm, is greater than the first preset warning height, but is less than the second preset warning height, it indicates that the detected height of the foam is higher and has exceeded the first preset warning height, if the foam in the washing tub continues to increase and rise, it is likely to reach the second preset warning height, and further it is likely to block the air pipe, and affect the normal operation of the drum washing machine, and in order to avoid the above situation, the defoaming treatment is required, but because the operation of the drum washing machine in different process stages is different, in order to better eliminate the foam, the process stage of the drum washing machine is obtained, and according to the progress stage of the drum washing machine, different defoaming operations are executed.
Wherein, the process stage can comprise a water injection stage, a washing stage, a water drainage stage, a dehydration stage, a rinsing stage and other stages; or the drum washing machine has a drying function, and the process phase can also comprise a drying phase. Of course, the progress phase is not limited to the above-described one, and may be another phase such as a standby phase. Hereinafter, the defoaming method of the present invention will be further described by taking a washing stage and a rinsing stage as examples.
Further, as shown in fig. 2, the defoaming method of the present invention further includes:
s500, if the foam height is smaller than a first preset warning height, the defoaming operation is not executed, and the set program is continuously executed;
s600, if the foam height is larger than a second preset warning height, controlling the washing drum to stop rotating.
In step S500, if the foam height is smaller than the first preset warning height, for example, the first preset warning height is 200mm, the detected foam height is 180mm, and is smaller than the first preset warning height, it indicates that the detected foam height is lower and does not reach the first preset warning height, the normal operation of the drum washing machine is not affected, the defoaming operation is not required, and the set program is continuously executed.
In step S600, if the height of the foam is greater than the second preset warning height, for example, the second preset warning height is 400mm, the detected height of the foam is 405mm, which is greater than the second preset warning height, which indicates that the detected height of the foam is very high and exceeds the second preset warning height, if the foam in the washing tub continues to increase and rise, the air pipe may be blocked, which affects the normal operation of the drum washing machine, in order to avoid the above situation, the washing tub is controlled to stop rotating, so that the washing water in the washing tub tends to be still, the foam is eliminated by adopting a standing manner, the generation of the foam can be completely inhibited, the height of the foam is continuously detected, and when the detected height of the foam is less than the first preset warning height, the remaining setting procedure is continuously executed.
It should be noted that the first preset warning height and the second preset warning height listed above are only exemplary, but not limiting, and those skilled in the art can flexibly adjust and set the first preset warning height and the second preset warning height according to the model of the drum washing machine, the setting position of the breather pipe, and other information in practical applications, for example, the first preset warning height is 260mm, the second preset warning height is 480mm, and the like, and the first preset warning height and the second preset warning height are adjusted and set anyway, so long as it can be determined whether the defoaming operation needs to be performed.
It should be further noted that, in the above process, step S300, step S500 and step S600 do not have a sequence, are parallel, and are only related to the comparison results of the foam height and the first preset warning height and the second preset warning height, respectively, and corresponding steps are executed according to different comparison results.
Referring to fig. 3 to 5, a defoaming method of the drum washing machine in the washing stage of the present invention will be described. Wherein, fig. 3 is a first flowchart of the defoaming method of the drum washing machine in the washing stage according to the present invention; FIG. 4 is a second flowchart of the defoaming method of the drum washing machine in the washing stage of the present invention; fig. 5 is a third flowchart of the defoaming method for the drum washing machine in the washing stage according to the present invention.
As shown in fig. 3, the step of "executing different defoaming operations according to the process stage" in step S400 specifically includes:
s411, if the drum washing machine is in a washing stage, reducing the rotation-stop ratio of the washing drum to a first rotation-stop ratio and canceling the surging operation;
s412, after the first preset time, obtaining the foam height in the washing cylinder again;
s413, comparing the obtained foam height with a first preset warning height and a first preset height respectively;
and S414, selectively controlling the drum washing machine to execute the rest setting programs or continuously executing the defoaming operation according to the comparison result.
The first preset height is larger than the first preset warning height but smaller than the second preset warning height, and the first preset height is larger than or equal to the height of the foam obtained last time.
The foam height acquired last time is the foam height acquired in step S100, and the foam height satisfies the condition for determining to execute step S300, that is, the foam height satisfies the condition that is greater than the first preset warning height but less than the second preset warning height, for example, the detected foam height listed in step S300 is 210 mm.
In step S411, in the case that the drum washing machine is in the washing stage, in general, in order to improve the washing effect, the sloshing operation is set and the rotation/stop ratio of the washing drum is set higher, so as to improve the water flow strength, therefore, the water flow strength can be reduced by reducing the rotation/stop ratio, canceling the sloshing operation, and the like, thereby effectively inhibiting the generation of foam, and achieving the purpose of defoaming.
For example, the current rotation stop ratio of the washing drum is 30/20, the rotation time of the inner drum is reduced, and the rotation stop ratio is reduced to 20/20 (namely, the first rotation stop ratio); or increasing the stop time of the inner cylinder and reducing the rotation stop ratio to 30/30; or the rotation time of the inner drum is reduced, the stop time of the inner drum is increased, the rotation-stop ratio is reduced to 25/25, and the rotation-stop ratio of the washing drum is reduced through the method, so that the washing water flow strength of the drum washing machine is reduced, and the foam can be effectively eliminated.
Of course, the defoaming method in step S411 is not limited to the above-mentioned methods, and may be performed by only reducing the rotation/stop ratio of the washing drum to the first rotation/stop ratio, or by only canceling the agitation operation, and those skilled in the art may flexibly adjust and set the combination of the defoaming methods in step S411 according to the actual defoaming demand, defoaming effect, and the like.
In step S412, after the first preset time (e.g., 5min), the foam height in the washing tub is detected again by the foam detecting component, so as to ensure that after the drum washing machine performs the defoaming operation such as reducing the rotation-stop ratio and canceling the surging operation, the drum washing machine can have enough time to eliminate the foam in the washing tub, and according to the comparison result between the obtained foam height and the first preset warning height and the first preset height, the drum washing machine is selectively controlled to execute the remaining set program or continue to execute the defoaming operation, so that the remaining set program is prevented from being executed under the condition that the defoaming effect does not reach the preset effect, thereby preventing the foam in the washing tub from continuously rising to the second preset warning height, achieving the purpose of providing the most reasonable defoaming method for the drum washing machine, and further improving the user experience.
It should be noted that the above listed current rotation stop ratio, first rotation stop ratio and first preset time are only exemplary, not restrictive, and those skilled in the art can flexibly adjust and set the current rotation stop ratio, first rotation stop ratio and first preset time according to the foam height, defoaming requirement and defoaming effect in practical application.
As shown in fig. 4, the step of "selectively controlling the drum washing machine to execute the remaining setting program or continue the defoaming operation according to the comparison result" in step S414 specifically includes:
s421, if the foam height obtained again is greater than or equal to the first preset warning height but less than or equal to the first preset height, controlling the washing drum to continue to operate according to the first rotation-stop ratio;
s422, reducing the emptying water level of the subsequent drum washing machine after washing is finished when the water draining operation is performed to a first preset emptying water level, and controlling the drum washing machine to perform rotary water draining operation when the drum washing machine performs water draining operation;
and S423, reducing the dehydration acceleration of the washing drum to a first preset acceleration when the dehydration operation is executed after the water drainage of the subsequent drum washing machine is finished, and reducing the highest dehydration speed of the washing drum to the first preset speed.
Wherein, the emptying water level is the water level of the draining pump for starting the drum washing machine in the draining stage, and the draining pump starts draining as long as the water level of the draining pump reaches the emptying water level.
Wherein, the dehydration acceleration is the acceleration of the dehydration speed of the inner cylinder rising to the set highest dehydration speed in the dehydration stage; preferably, the dewatering speed is stepwise.
In step S421, if the height of the obtained foam is greater than or equal to the first preset warning height but less than or equal to the first preset height, for example, the first preset warning height is 200mm, the first preset height is 220mm, and the height of the detected foam is 205mm, although the height of the detected foam is still greater than the first preset warning height, the height of the detected foam is already less than the first preset height and less than the height of the detected foam (for example, 210mm), which indicates that the foam is gradually eliminated and the height of the foam is gradually reduced, a certain defoaming effect is obtained, and the defoaming method adopted in step S411 is effective, the defoaming operation is continuously performed, that is, the washing drum is controlled to continuously operate according to the first rotation-stop ratio.
Or, the first preset warning height is 200mm, the first preset height is 220mm, the re-detected foam height is 215mm, the re-detected foam height is still greater than the first preset warning height and greater than the last detected foam height (for example, 210mm), but the re-detected foam height is less than the first preset height, which indicates that the foam is not well eliminated, the foam height slightly increases, but the increase amplitude of the foam is not large, and in a controllable range, the foam may be caused by a detection error or a short foam removal time, and it cannot indicate that the foam removal method adopted in step S411 is ineffective, and therefore, the foam removal method adopted in step S411 may be continuously performed, that is, the washing tub is controlled to continuously operate according to the first rotation-stop ratio.
In step S422, the drain water level of the drain pump when the subsequent drum washing machine performs the drain operation after the washing is finished is reduced to a first preset drain water level, for example, the current drain water level of the drain pump is 14mm, and the drain water level is reduced to 12mm (i.e., the first preset drain water level).
Further, control drum type washing machine when drum type washing machine carries out the drainage operation and carries out the rotation drainage operation, including a section of thick bamboo pivoted in-process, can drive the clothing rotation in the inner tube to the foam that will be full of in it is caught up with or is eliminated, under the combined action that reduces evacuation water level and rotate the drainage, can eliminate the foam better, has further improved defoaming effect.
In step S423, the dehydration acceleration of the washing drum during the dehydration operation after the water discharge of the subsequent drum washing machine is finished is reduced to a first preset acceleration, for example, the current dehydration acceleration of the inner drum is 25r/S, the dehydration acceleration is reduced to 20r/S (i.e., the first preset acceleration), and the dehydration acceleration is reduced, so that the time for the dehydration speed of the inner drum to rise to the maximum dehydration speed is prolonged, the time for the centrifugal force generated in the dehydration process to rise to the maximum centrifugal force is prolonged, the centrifugal force generated in the dehydration process is prevented from rising to the maximum centrifugal force, the acting time of the clothes squeezed by the maximum centrifugal force is shortened, the amount of foams generated by the clothes under the effect of the maximum centrifugal force is reduced, and the defoaming effect is further improved.
And, because the centrifugal force that produces in the dehydration process rises to the time of the maximum centrifugal force fast for the centrifugal force that receives at the clothing at the same time point reduces, thereby reduced the washing water volume of deviating from, because step S422 will empty the water level and reduce to the first predetermined empty water level again, even reduce the washing water volume of deviating from, also can be in time with the washing water discharge of deviating from, avoided the inner tube to produce and hit the effect in the pivoted in-process, thereby avoided producing the foam.
Further, the maximum dehydration speed of the washing drum is reduced to a first preset speed, for example, the current maximum dehydration speed of the inner drum is 1400r/min, and the maximum dehydration speed is reduced to 1200r/min (i.e., the first preset speed), so that the maximum centrifugal force generated in the dehydration process is reduced, the amount of foam generated by the laundry under the action of squeezing of the maximum centrifugal force is reduced, and the defoaming effect is further improved.
Of course, the defoaming method of step S423 is not limited to the above-mentioned methods, and only the dehydration acceleration of the washing drum may be reduced to the first preset acceleration, or only the maximum dehydration speed of the washing drum may be reduced to the first preset speed, and those skilled in the art can flexibly adjust and set the combination of the defoaming methods of step S423 according to actual defoaming needs, defoaming effects, and the like.
After step S423, the drum washing machine is controlled to execute the remaining setting program, for example, the drum washing machine is controlled to execute the rinsing program.
It should be noted that the first preset alert height, the first preset height, the current emptying water level, the first preset emptying water level, the current dewatering acceleration, the first preset acceleration, the current highest dewatering speed, and the first preset speed listed above are only exemplary, and not limiting, and those skilled in the art can flexibly adjust and set the first preset alert height, the first preset height, the current emptying water level, the first preset emptying water level, the current dewatering acceleration, the first preset acceleration, the current highest dewatering speed, and the first preset speed according to the foam height, the defoaming requirement, and the defoaming effect in practical applications.
As shown in fig. 5, the step of selectively controlling the drum washing machine to execute the remaining setting program or continue the defoaming operation according to the comparison result in step S414 further includes:
s431, if the obtained foam height is larger than the first preset height, reducing the rotation-stop ratio of the drum washing machine to a second rotation-stop ratio, wherein the second rotation-stop ratio is smaller than the first rotation-stop ratio;
s432, reducing the emptying water level of the subsequent drum washing machine after washing is finished when the water drainage operation is performed to a second preset emptying water level, and controlling the drum washing machine to perform rotary water drainage operation when the drum washing machine performs water drainage operation;
s433, reducing the dehydration acceleration of the washing drum to a second preset acceleration when the dehydration operation is executed after the subsequent drum washing machine finishes draining, and reducing the highest dehydration speed of the washing drum to a second preset speed;
s434, after the dehydration of the drum washing machine is finished, acquiring the set rinsing times of the drum washing machine;
s435, judging whether the set rinsing times are smaller than a first preset time or not;
s436, if the set rinsing frequency is less than a first preset frequency, increasing the rinsing frequency;
and S437, if the set rinsing times are larger than or equal to the first preset times, not adjusting the rinsing times.
In step S431, if the height of the foam obtained again is greater than the first preset height, for example, the first preset height is 220mm, the height of the foam detected again is 225mm, and is greater than the first preset height, since the first preset height is greater than the last detected height of the foam (for example, 210mm), it indicates that the foam is not well eliminated, but rather is significantly increased, it indicates that the defoaming method adopted in step S411 cannot effectively eliminate the foam, the defoaming method adopted in step S411 is continuously executed, and the foam cannot be eliminated, in order to eliminate the foam, the rotation-stop ratio of the washing drum is further reduced, and the washing water flow strength of the drum washing machine is further reduced, so that the generation of the foam is effectively inhibited, and the purpose of defoaming is achieved.
For example, the first rotation-stop ratio of the washing drum is 20/20, the rotation time of the inner drum is reduced, and the rotation-stop ratio is reduced to 10/20 (namely, the second rotation-stop ratio); or increasing the stop time of the inner cylinder and reducing the rotation stop ratio to 20/30; or the rotation time of the inner drum is reduced, the stop time of the inner drum is increased, the rotation-stop ratio is reduced to 15/25, and the rotation-stop ratio of the washing drum is further reduced through the mode, so that the washing water flow strength of the drum washing machine is further reduced, and the bubbles can be effectively eliminated.
In step S432, the drain water level of the subsequent drum washing machine during the draining operation after the washing is finished is reduced to a second preset drain water level, for example, the current drain water level of the drain pump is 14mm, and the drain water level is reduced to 10mm (i.e., the second preset drain water level), when the water level of the drain pump reaches 10mm, the drain pump starts draining, so that the time interval between two adjacent starts of the drain pump is shortened, the draining frequency of the drain pump is increased, the washing water can be drained in time, and the inner drum is prevented from being hit during the rotation process, thereby preventing the generation of foam.
Further, control drum type washing machine when drum type washing machine carries out the drainage operation and carries out the rotation drainage operation, including a section of thick bamboo pivoted in-process, can drive the clothing rotation in the inner tube to the foam that will be full of in it is caught up with or is eliminated, under the combined action that reduces evacuation water level and rotate the drainage, can eliminate the foam better, has further improved defoaming effect.
In step S433, the dehydration acceleration of the washing drum during the dehydration operation performed after the drainage of the subsequent drum washing machine is finished is reduced to a second preset acceleration, for example, the current dehydration acceleration of the inner drum is 25r/S, the dehydration acceleration is reduced to 10r/S (i.e., the second preset acceleration), and the dehydration acceleration is reduced, so that the time for the dehydration speed of the inner drum to rise to the maximum dehydration speed is prolonged, the time for the centrifugal force generated in the dehydration process to rise to the maximum centrifugal force is prolonged, the centrifugal force generated in the dehydration process is prevented from rising to the maximum centrifugal force, the acting time of the clothes squeezed by the maximum centrifugal force is shortened, the amount of foam generated by the clothes under the effect of the maximum centrifugal force is reduced, and the defoaming effect is further improved.
And, because the centrifugal force that produces in the dehydration process rises to the time of the maximum centrifugal force fast for the centrifugal force that receives at the clothing at the same time point reduces, thereby reduced the washing water volume of deviating from, because step S432 will empty the water level and reduce to the second and preset and empty the water level, even reduce the washing water volume of deviating from, also can discharge the washing water of deviating from in time, avoided the inner tube to produce and hit the effect in the course of rotating, thereby avoided producing the foam.
Further, the maximum dehydration speed of the washing drum is reduced to a second preset speed, for example, the current maximum dehydration speed of the inner drum is 1400r/min, and the maximum dehydration speed is reduced to 1000r/min (i.e., the second preset speed), so that the maximum centrifugal force generated in the dehydration process is reduced, the amount of foam generated by the laundry under the action of squeezing of the maximum centrifugal force is reduced, and the defoaming effect is further improved.
Of course, the defoaming method in step S433 is not limited to the above-mentioned method, and only the dehydration acceleration of the washing drum may be reduced to the second preset acceleration, or only the maximum dehydration speed of the washing drum may be reduced to the second preset speed, and those skilled in the art can flexibly adjust and set the combination of the defoaming methods in step S433 according to actual defoaming needs, defoaming effects, and the like.
In step S434, since the height of the foam obtained again in step S431 is greater than the first preset height, it indicates that there are many foams in the washing drum, and even if the defoaming treatment is performed, there may be problems of incomplete rinsing, residual foam, and the like.
In step S436, if the set rinsing frequency is less than the first preset frequency, for example, the first preset frequency is 5, the set rinsing frequency is 3, which is less than the first preset frequency, which means that the set rinsing frequency is less, and it is difficult to rinse the laundry clean, in order to avoid the foam remaining on the laundry, the rinsing frequency is increased, for example, 1 or 2 times, and the increased rinsing frequency is not greater than the first preset frequency.
In step S437, if the set rinsing frequency is greater than or equal to the first preset frequency, for example, the first preset frequency is 5 times, the set rinsing frequency is 6 times, and is greater than the first preset frequency, it indicates that the set rinsing frequency is very large, the laundry can be rinsed clean, and the rinsing frequency does not need to be adjusted.
It should be noted that the first preset height, the first rotation/stop ratio, the second rotation/stop ratio, the current emptying water level, the second preset emptying water level, the current dewatering acceleration, the second preset acceleration, the current highest dewatering speed, the second preset speed, and the first preset number of times listed above are only exemplary, and not limiting, and those skilled in the art can flexibly adjust and set the first preset height, the first rotation/stop ratio, the second rotation/stop ratio, the current emptying water level, the second preset emptying water level, the current dewatering acceleration, the second preset acceleration, the current highest dewatering speed, the second preset speed, and the first preset number of times in practical application according to the foam height, the defoaming requirement, and the defoaming effect.
It should be further noted that, in the above process, step S436 and step S437 are not in sequence, are parallel, and are only related to the determination result of whether the set rinsing frequency is less than the first preset frequency, and the corresponding step is executed according to different determination results.
Although not shown in the drawings, the step of selectively controlling the drum washing machine to perform the remaining setting process or continue the defoaming operation according to the comparison result in step S414 further includes:
and S441, if the foam height obtained again is less than the first preset warning height, controlling the drum washing machine to execute the rest setting program.
In step S441, if the foam height obtained again is less than the first preset warning height, for example, the first preset warning height is 200mm, the foam height detected again is 190mm, and is less than the first preset warning height, which indicates that the foam height at this time has decreased to below the first preset warning height, the warning is eliminated, and the drum washing machine can normally operate, then the drum washing machine is controlled to execute the remaining setting procedure.
It should be noted that, in the foregoing process, step S421, step S431, and step S441 are not in sequence, and are parallel, and only the foam height obtained again is related to the comparison result between the first preset warning height and the first preset height, and the corresponding step is executed according to different comparison results.
Referring to fig. 6 to 8, a defoaming method of the drum washing machine in the rinsing stage according to the present invention will be described. Fig. 6 is a first flowchart of a defoaming method of the drum washing machine in the rinsing stage according to the present invention; FIG. 7 is a second flowchart of the defoaming method of the drum washing machine in the rinsing stage according to the present invention; fig. 8 is a third flowchart of the defoaming method for the drum washing machine in the rinsing stage according to the present invention.
As shown in fig. 6, the step of "performing different defoaming operations according to the progress stage" in step S400 further includes:
s451, if the drum washing machine is in the rinsing stage, reducing the rotation frequency of the washing drum to a preset rotation frequency;
s452, after the second preset period, obtaining the foam height in the washing cylinder again;
s453, comparing the foam height obtained again with a first preset warning height and a second preset height respectively;
s454, selectively controlling the drum washing machine to execute the rest set programs or continue to execute the defoaming operation according to the comparison result;
and the second preset height is greater than the first preset warning height but less than the second preset warning height, and is greater than or equal to the height of the foam obtained last time.
The foam height acquired last time is the foam height acquired in step S100, and the foam height satisfies the condition for determining to execute step S300, that is, the foam height satisfies the condition that is greater than the first preset warning height but less than the second preset warning height, for example, the detected foam height listed in step S300 is 210 mm.
In step S451, in the case that the drum washing machine is in the rinsing stage, in general, in order to improve the rinsing effect, the rotation frequency of the washing drum is set higher to improve the water flow intensity, so that the water flow intensity can be reduced by reducing the rotation frequency, and the like, thereby effectively suppressing the generation of foam and achieving the purpose of defoaming.
For example, the current rotation frequency of the washing drum is 10s per 30s, the rotation frequency is reduced to 5s per 30s (namely, the preset rotation frequency), or the rotation frequency is reduced to 10s per 40s, or the rotation frequency is reduced to 8s per 28s, and the rotation frequency of the washing drum is reduced in the above manner, so that the washing and rinsing water flow intensity of the drum washing machine is reduced, and the bubbles can be effectively eliminated.
In step S452, after the second preset time (e.g., 5min), the foam height in the washing tub is detected again by the foam detecting component, so as to ensure that after the drum washing machine performs defoaming operations such as reducing the rotation frequency, the drum washing machine can have enough time to eliminate the foam in the washing tub, and according to the comparison result between the obtained foam height and the first preset warning height and the second preset height, the drum washing machine is selectively controlled to execute the remaining setting program or continue to execute the defoaming operation, so that the situation that the defoaming effect does not reach the preset effect is avoided, and thus the foam in the washing tub continues to rise to the second preset warning height, the purpose of providing the most reasonable defoaming method for the drum washing machine is achieved, and the user experience is further improved.
Although the second preset time is the same as the first preset time, this is only an example and not a limitation, and in practical applications, a person skilled in the art may set the second preset time to be different from the first preset time, for example, the first preset time is 4min, and the second preset time is 6min, which the present invention does not limit this.
It should be noted that the above listed current rotation frequency, preset rotation frequency and second preset time are only exemplary and not restrictive, and those skilled in the art can flexibly adjust and set the current rotation frequency, preset rotation frequency and second preset time according to the foam height, defoaming requirement and defoaming effect in practical application.
As shown in fig. 7, the step of "selectively controlling the drum washing machine to execute the remaining setting program or continue the defoaming operation according to the comparison result" in step S454 specifically includes:
s461, if the obtained foam height is more than or equal to the first preset warning height but less than or equal to the second preset height, controlling the washing drum to continuously run according to the preset rotating frequency;
s462, reducing the emptying water level of the subsequent drum washing machine to a third preset emptying water level when the water drainage operation is executed after the rinsing is finished;
s463, after the water drainage of the drum washing machine is finished, controlling the drum washing machine to perform spray rinsing operation and controlling the drum washing machine to perform rotary water drainage operation;
s464, reducing the dehydration acceleration of the washing drum to a third preset acceleration when the dehydration operation is executed after the water drainage of the subsequent drum washing machine is finished, and reducing the highest dehydration speed of the washing drum to the third preset speed;
s465, after the dehydration of the drum washing machine is finished, controlling the drum washing machine to execute the spray rinsing operation again;
s466, after the spray rinsing of the roller washing machine is finished again, acquiring the residual rinsing times of the roller washing machine;
s467, judging whether the number of times of residual rinsing is greater than or equal to a second preset number of times;
if yes, go to step S468;
if not, performing capture S469;
s468, controlling the drum washing machine to continuously execute rinsing operation;
and S469, controlling the drum washing machine to finish the operation.
Wherein, the emptying water level is the water level of the draining pump for starting the drum washing machine in the draining stage, and the draining pump starts draining as long as the water level of the draining pump reaches the emptying water level.
Wherein, the dehydration acceleration is the acceleration of the dehydration speed of the inner cylinder rising to the set highest dehydration speed in the dehydration stage; preferably, the dewatering speed is stepwise.
In step S461, if the height of the obtained foam is greater than or equal to the first preset warning height but less than or equal to the second preset height, for example, the first preset warning height is 200mm, the second preset height is 225mm, and the height of the detected foam is 205mm, although the height of the detected foam is still greater than the first preset warning height, the height of the detected foam is already less than the second preset height and less than the height of the detected foam (for example, 210mm), which indicates that the foam is gradually eliminated and the height of the foam is gradually reduced, a certain defoaming effect is obtained, and the defoaming method adopted in step S451 is effective, the defoaming operation is continuously performed, that is, the washing drum is controlled to continuously operate according to the preset rotation frequency.
Or, the first preset warning height is 200mm, the second preset height is 225mm, the re-detected foam height is 215mm, the re-detected foam height is still greater than the first preset warning height and greater than the last detected foam height (for example, 210mm), but the re-detected foam height is less than the second preset height, which indicates that the foam is not well eliminated, the foam height slightly increases, but the increase amplitude of the foam is not large, and in a controllable range, the foam may be caused by a detection error or a short foam removal time, and it cannot indicate that the foam removal method adopted in step S451 is ineffective, and therefore, the foam removal method adopted in step S451 may be continuously performed, that is, the washing tub is controlled to continuously operate according to the preset rotation frequency.
Although the second preset height is different from the first preset height, this is only an example and not a limitation, and in practical applications, a person skilled in the art may set the second preset height to be equal to the first preset height, for example, the first preset height is 222mm, and the second preset height is also 222mm, which the present invention does not limit in any way.
In step S462, the drain water level of the drain pump when the subsequent drum washing machine performs the drain operation after the rinsing is finished is reduced to a third preset drain water level, for example, the current drain water level of the drain pump is 14mm, and the drain water level is reduced to 8mm (i.e., the third preset drain water level).
In step S463, after the drum washing machine finishes draining, controlling the drum washing machine to perform a spray rinsing operation, for example, spray rinsing for 20S; and the drum washing machine is controlled to execute the rotation drainage operation, and the clothes in the inner drum are rotated to the front part of the inner drum (namely, the position close to the window pad), so that the sprayed washing water can be completely sprayed onto the clothes, the foam can be effectively eliminated, and the defoaming effect is further improved.
In step S464, the dehydration acceleration of the washing drum during the dehydration operation performed after the water discharge of the subsequent drum washing machine is finished is reduced to a third preset acceleration, for example, the current dehydration acceleration of the inner drum is 25r/S, the dehydration acceleration is reduced to 5r/S (i.e., the third preset acceleration), and the dehydration acceleration is reduced, so that the time for the dehydration speed of the inner drum to rise to the maximum dehydration speed is prolonged, the time for the centrifugal force generated in the dehydration process to rise to the maximum centrifugal force is prolonged, the centrifugal force generated in the dehydration process is prevented from rising to the maximum centrifugal force, the acting time of the clothes squeezed by the maximum centrifugal force is shortened, the amount of foams generated by the clothes under the effect of the maximum centrifugal force is reduced, and the defoaming effect is further improved.
And, because the centrifugal force that the centrifugal force produced in the course of dehydrating rises to the time of the maximum centrifugal force fast has been lengthened, make the centrifugal force that receives at the same time point of the clothes reduce, thus has reduced the washing water volume that is deviate from, because step S462 will empty the water level and reduce to the third and preserve the water level of empting, even reduce the washing water volume that deviates from, also can discharge the washing water that deviates from in time, have avoided the inner tube to produce and hit the effect in the course of rotating, thus has avoided producing the foam.
Further, the maximum dehydration speed of the washing drum is reduced to a third preset speed, for example, the current maximum dehydration speed of the inner drum is 1400r/min, and the maximum dehydration speed is reduced to 800r/min (i.e., the third preset speed), so that the maximum centrifugal force generated in the dehydration process is reduced, the amount of foam generated by the laundry under the action of squeezing of the maximum centrifugal force is reduced, and the defoaming effect is further improved.
Of course, the defoaming method in step S464 is not limited to the above-mentioned methods, and only the dehydration acceleration of the washing drum may be reduced to the third preset acceleration, or only the maximum dehydration speed of the washing drum may be reduced to the third preset speed, and those skilled in the art can flexibly adjust and set the combination of the defoaming methods in step S464 according to the actual defoaming requirement, defoaming effect, and the like.
And S465, after the dehydration of the drum washing machine is finished, controlling the drum washing machine to perform spray rinsing operation again, such as spray rinsing for 25S, further eliminating the foam, and reducing the residual quantity of the foam on the clothes.
In step S466, since it is not determined whether the current rinsing stage (i.e., the rinsing stage determined in step S451) is the last rinsing of the drum washing machine, when the defoaming is completed in step S465, the number of times of the remaining rinsing of the drum washing machine is obtained, and it is determined whether to end the operation or continue the rinsing operation according to the number of times of the remaining rinsing.
In step S468, if the number of times of remaining rinsing is greater than or equal to a second preset number of times, for example, the second preset number of times is 1, the number of times of remaining rinsing is 2, which is greater than the second preset number of times, indicating that the current rinsing stage is not the last rinsing of the drum washing machine, and 2 times of rinsing is not performed yet, the drum washing machine is controlled to continue to perform the rinsing operation.
In step S469, if the number of times of remaining rinsing is less than a second predetermined number of times, for example, the second predetermined number of times is 1, the number of times of remaining rinsing is 0, and the number of times of remaining rinsing is less than the second predetermined number of times, which indicates that the current rinsing stage is the last rinsing of the drum washing machine, the drum washing machine is controlled to end the operation after the spin-drying of the drum washing machine is completed.
It should be noted that the first preset warning height, the second preset height, the current emptying water level, the third preset emptying water level, the spray rinsing time, the current dewatering acceleration, the third preset acceleration, the current highest dewatering speed, the third preset speed, and the second preset number listed above are only exemplary, and not limiting, and those skilled in the art can flexibly adjust and set the first preset warning height, the second preset height, the current emptying water level, the third preset emptying water level, the spray rinsing time, the current dewatering acceleration, the third preset acceleration, the current highest dewatering speed, the third preset speed, and the second preset number in practical applications according to the foam height, the defoaming requirement, and the defoaming effect.
It should be further noted that, in the above process, step S468 and step S469 do not have any sequence, are parallel, and are only related to the determination result of whether the number of times of remaining rinsing is greater than or equal to the second preset number of times, and the corresponding step is executed according to different determination results.
As shown in fig. 8, the step of selectively controlling the drum washing machine to execute the remaining setting program or continue the defoaming operation according to the comparison result in step S454 further includes:
s471, if the obtained foam height is larger than a second preset height, controlling the washing drum to stop rotating and enabling the drum washing machine to execute a water drainage operation;
s472, controlling the drum washing machine to perform dehydration operation after the drum washing machine finishes draining;
s473, acquiring the residual rinsing times of the drum washing machine after the drum washing machine finishes the dehydration;
s474, judging whether the residual rinsing frequency is less than a third preset frequency or not;
if not, go to step S475;
if yes, go to step S476;
s475, controlling the drum washing machine to continuously execute the rinsing operation;
s476, acquiring the set rinsing times of the drum washing machine;
s477, judging whether the set rinsing times is less than a fourth preset time;
if yes, go to step S478;
if not, go to step S479;
s478, increasing rinsing times;
and S479, controlling the drum washing machine to finish the operation.
In step S471, if the height of the obtained foam is greater than the second preset height, for example, the second preset height is 225mm, the height of the detected foam is 230mm, and is greater than the second preset height, since the second preset height is greater than the last detected height of the foam (for example, 210mm), it indicates that the foam is not well removed, but is significantly increased, it indicates that the defoaming method adopted in step S451 cannot effectively remove the foam, the defoaming method adopted in step S451 is continuously performed, and the foam cannot be removed, the washing drum is controlled to stop rotating, and the drum washing machine is made to perform a drainage operation, so as to lower the water level and prevent the foam from blocking the vent pipe.
In step S473, since it is not determined whether the current rinsing stage (i.e., the rinsing stage determined in step S451) is the last rinsing of the drum washing machine, after the dehydration in step S472 is completed, the remaining rinsing times of the drum washing machine are acquired, and whether to end the operation or continue the rinsing operation is determined according to the remaining rinsing times.
In step S475, if the number of times of remaining rinsing is greater than or equal to a third preset number, for example, the third preset number is 1, the number of times of remaining rinsing is 3, and the third preset number indicates that the current rinsing stage is not the last rinsing of the drum washing machine, and 3 times of rinsing has not been performed yet, the drum washing machine is controlled to continue to perform the rinsing operation.
In step S476, if the number of times of remaining rinsing is less than a third preset number, for example, the third preset number is 1, the number of times of remaining rinsing is 0 and less than the third preset number, which indicates that the current rinsing stage is the last rinsing of the drum washing machine, but the height of the bubbles obtained again in step S471 is greater than the second preset height, the bubbles in the washing drum are still more, the laundry is not rinsed clean, and the laundry can be rinsed clean only by more rinsing, in order to determine whether to increase the number of times of rinsing, the set number of times of rinsing of the drum washing machine is obtained, and whether to increase the number of times of rinsing is determined according to the set number of times of rinsing.
In step S478, if the set rinsing frequency is less than the fourth preset frequency, for example, the fourth preset frequency is 5, the set rinsing frequency is 3, and the fourth preset frequency is less than the fourth preset frequency, which indicates that the set rinsing frequency is less, in order to rinse the laundry clean, the rinsing frequency may be increased, for example, increased by 1 or 2, and the increased rinsing frequency is not greater than the fourth preset frequency.
In step S479, if the number of times of rinsing is set to be greater than or equal to a fourth preset number of times, for example, the fourth preset number of times is 5 times, the number of times of rinsing is 6 times, and is greater than the fourth preset number of times, which indicates that the number of times of rinsing is set to be very large, and in the last rinsing process, the detected height of foam is still higher than the first preset warning height, and the height of foam detected again after defoaming treatment is greater than the second preset height, which still fails to eliminate foam, and may be caused by a fault of a detection component, or may be caused by too much detergent being put in, and is not suitable for continuing to perform the rinsing operation for any reason, the drum washing machine is controlled to end operation.
It should be noted that, in the above process, step S475 and step S476 have no sequence, are parallel, and are only related to the determination result of whether the number of times of remaining rinsing is less than the third preset number, and the corresponding steps may be executed according to different determination results. Step S478 and step S479 are not in sequence, are parallel, and are only related to the determination result of whether the set rinsing frequency is less than the fourth preset frequency, and corresponding steps are executed according to different determination results.
Although not shown in the drawings, the step of selectively controlling the drum washing machine to perform the remaining setting process or continue the defoaming operation according to the comparison result in the step S454 further includes:
and S481, if the height of the bubbles obtained again is less than the first preset warning height, controlling the drum washing machine to execute the rest setting program.
In step S481, if the height of the foam obtained again is less than the first preset warning height, for example, the first preset warning height is 200mm, the height of the foam detected again is 185mm, and is less than the first preset warning height, which indicates that the height of the foam at this time has decreased to below the first preset warning height, the warning is removed, and the drum washing machine can operate normally, then the drum washing machine is controlled to execute the remaining setting program.
It should be noted that, in the above process, step S461, step S471 and step S481 do not have any sequence, and are parallel, and only the foam height obtained again is related to the comparison result of the first preset warning height and the first preset height, respectively, and the corresponding steps are executed according to different comparison results.
In addition, it should be noted that, although the first preset drain water level, the second preset drain water level and the third preset drain water level listed above are different from each other, the first preset acceleration, the second preset acceleration and the third preset acceleration are different from each other, and the second preset speed, the first preset speed and the third preset speed are different from each other, this is only an example and not a limitation, and in practical applications, a person skilled in the art may set any two or all of the first preset drain water level, the second preset drain water level and the third preset drain water level to be the same; any two or all of the first preset acceleration, the second preset acceleration and the third preset acceleration may be set to be the same; any two or all of the second preset speed, the first preset speed and the third preset speed may also be set to be the same, which is not limited in this respect.
Referring now to fig. 9 and 10, one possible control flow of the present invention is described. Wherein, fig. 9 is a logic diagram (one) of the defoaming method of the present invention; fig. 10 is a logic diagram (ii) of the defoaming method of the present invention.
As shown in fig. 9, one possible complete flow of the defoaming method of the present invention is:
s701, in the running process of the drum washing machine, obtaining the foam height h in the washing drum 1 ；
S702, mixing h 1 Respectively with a first preset warning height h 01 And a second preset warning height h 02 Comparing;
if h is 1 ＜h 01 If yes, go to step S703;
if h is 1 ＞h 02 Then go to step S704;
if h is 01 ≤h 1 ≤h 02 Then, go to step S705;
s703, not executing the defoaming operation, and continuing to execute the step S719;
s704, controlling the washing drum to stop rotating, continuously detecting the height of foam, and executing step S719 when the detected height of the foam is smaller than the first preset warning height;
s705, acquiring the current process stage of the drum washing machine;
if the drum washing machine is in the washing stage,step S706 is executed;
s706, reducing the rotation-stop ratio of the washing drum to the first rotation-stop ratio and canceling the surging operation;
s707, after 5min, obtaining the foam height h in the washing cylinder again 2 ；
S708, mixing h 2 Respectively with a first preset warning height h 01 And a first preset height h 11 Comparing;
if h is 01 ≤h 2 ≤h 11 If yes, go to step S709;
if h is 2 ＞h 11 Then, go to step S712;
if h is 2 ＜h 01 Then, step S719 is executed;
s709, controlling the washing drum to continuously operate according to the first rotation-stop ratio;
s710, reducing the emptying water level of the subsequent drum washing machine after washing is finished when the water drainage operation is performed to a first preset emptying water level, and controlling the drum washing machine to perform rotary water drainage operation when the drum washing machine performs water drainage operation;
s711, reducing the dehydration acceleration of the washing drum to a first preset acceleration when the dehydration operation is executed after the water drainage of the subsequent drum washing machine is finished, and reducing the highest dehydration speed of the washing drum to the first preset speed;
after step S711, step S719 is executed;
s712, reducing the rotation-stop ratio of the drum washing machine to a second rotation-stop ratio, wherein the second rotation-stop ratio is smaller than the first rotation-stop ratio;
s713, reducing the emptying water level of the subsequent drum washing machine to a second preset emptying water level when the water draining operation is executed after the washing is finished, and controlling the drum washing machine to execute the rotary water draining operation when the drum washing machine executes the water draining operation;
s714, reducing the dehydration acceleration of the washing drum to a second preset acceleration when the dehydration operation is executed after the water drainage of the subsequent drum washing machine is finished, and reducing the highest dehydration speed of the washing drum to the second preset speed;
s715, after the dewatering of the drum washing machine is finished, acquiring the set rinsing frequency C of the drum washing machine 1 ；
S716, judgment C 1 Whether it is less than 5 (i.e., the first preset number of times); if yes, go to step S717; if not, go to step S718;
s717, increasing rinsing times;
s718, not adjusting the rinsing times;
s719, controlling the drum washing machine to execute the rest setting program;
if the drum washing machine is in the rinsing stage,step S720 is executed;
s720, reducing the rotation frequency of the washing drum to a preset rotation frequency;
s721, after 5min, obtaining the foam height h in the washing cylinder again 3 ；
S722, mixing h 3 Respectively with a first preset warning height h 01 And a second preset height h 12 Carrying out comparison;
if h is 3 ＜h 01 Then, go to step S723;
if h is 01 ≤h 3 ≤h 12 If yes, go to step S724;
if h is 3 ＞h 12 Then, go to step S732;
s723, controlling the drum washing machine to execute the rest setting program
S724, controlling the washing drum to continuously run according to a preset rotating frequency;
s725, reducing the emptying water level of the subsequent drum washing machine to a third preset emptying water level when the water draining operation is executed after the rinsing is finished;
s726, after the drainage of the drum washing machine is finished, controlling the drum washing machine to execute spray rinsing operation and controlling the drum washing machine to execute rotary drainage operation;
s727, reducing the dehydration acceleration of the washing drum to a third preset acceleration when the dehydration operation is executed after the water drainage of the subsequent drum washing machine is finished, and reducing the highest dehydration speed of the washing drum to the third preset speed;
s728, after the dehydration of the drum washing machine is finished, controlling the drum washing machine to execute the spray rinsing operation again;
s729, after the spray rinsing of the drum washing machine is finished again, acquiring the residual rinsing frequency C of the drum washing machine 2 ；
S730, judging C 2 Whether the number is greater than or equal to 1 (i.e., the second preset number); if yes, go to step S731; if not, go to step S739;
s731, controlling the drum washing machine to continuously execute rinsing operation;
s732, controlling the washing drum to stop rotating and enabling the drum washing machine to perform a water drainage operation;
s733, controlling the drum washing machine to perform dewatering operation after the drum washing machine finishes draining;
s734, after the dewatering of the drum washing machine is finished, acquiring the residual rinsing frequency C of the drum washing machine 3 ；
S735, judgment C 3 Whether it is less than 1 (i.e., the third preset number of times); if yes, go to step S736; if not, go to step S731;
s736, obtaining the set rinsing frequency C of the drum washing machine 4 ；
S737, judgment C 4 Whether it is less than 5 (i.e., the fourth preset number of times); if yes, go to step S738; if not, go to step S731;
s738, increasing the rinsing times;
and S739, controlling the drum washing machine to finish the operation.
It should be noted that the above-mentioned embodiment is only a preferred embodiment of the present invention, and is only used for illustrating the principle of the method of the present invention, and is not intended to limit the protection scope of the present invention, and in practical applications, those skilled in the art can implement the above-mentioned function allocation by different steps, i.e. re-dividing or combining the steps in the embodiment of the present invention, as required. For example, the steps of the above embodiments may be combined into one step, or further divided into multiple sub-steps to complete all or part of the functions described above. For the names of the steps involved in the embodiments of the present invention, they are only for distinguishing the respective steps, and are not to be construed as limiting the present invention.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (10)

1. A defoaming method for a washing apparatus, characterized in that the washing apparatus comprises a washing drum, the defoaming method comprising the steps of:
acquiring the foam height in the washing cylinder in the operation process of the washing equipment;
comparing the foam height with a first preset warning height and a second preset warning height respectively;
if the foam height is greater than the first preset warning height but less than the second preset warning height, acquiring a current process stage of the washing equipment;
executing different defoaming operations according to the process stage;
wherein the first preset warning height is smaller than the second preset warning height.
2. The defoaming method according to claim 1, wherein the step of performing different defoaming operations according to the process stage specifically comprises:
if the washing apparatus is in a washing phase, reducing the spin-to-stop ratio of the washing drum to a first spin-to-stop ratio and/or canceling a sloshing operation;
after the first preset time, acquiring the foam height in the washing cylinder again;
respectively comparing the foam height obtained again with the first preset warning height and the first preset height;
selectively controlling the washing equipment to execute the rest set programs or continue to execute the defoaming operation according to the comparison result;
the first preset height is larger than the first preset warning height but smaller than the second preset warning height, and the first preset height is larger than or equal to the height of the foam obtained last time.
3. The defoaming method according to claim 2, wherein the step of selectively controlling the washing device to execute the remaining setting program or continue the defoaming operation according to the comparison result specifically comprises:
if the obtained foam height is larger than or equal to the first preset warning height but smaller than or equal to the first preset height, controlling the washing drum to continuously operate according to the first rotation-stop ratio;
reducing an emptying water level of the washing equipment to a first preset emptying water level when the washing equipment performs a water drainage operation after washing is finished, and controlling the washing equipment to perform a rotary water drainage operation when the washing equipment performs a water drainage operation;
and reducing the dehydration acceleration of the washing drum to a first preset acceleration when the dehydration operation is performed after the drainage of the washing equipment is finished, and/or reducing the highest dehydration speed of the washing drum to a first preset speed.
4. The defoaming method according to claim 2, wherein the step of selectively controlling the washing apparatus to perform the remaining set program or continue the defoaming operation according to the comparison result further comprises:
if the obtained foam height is larger than the first preset height, reducing the rotation-stop ratio of the washing equipment to a second rotation-stop ratio, wherein the second rotation-stop ratio is smaller than the first rotation-stop ratio;
reducing the emptying water level of the washing equipment to a second preset emptying water level when the water draining operation is executed after the washing is finished, and controlling the washing equipment to execute the rotary water draining operation when the washing equipment executes the water draining operation;
reducing the dehydration acceleration of the washing drum to a second preset acceleration and/or reducing the highest dehydration speed of the washing drum to a second preset speed when the dehydration operation is performed after the drainage of the washing equipment is finished;
acquiring a set rinsing frequency of the washing equipment after the dewatering of the washing equipment is finished;
judging whether the set rinsing times are smaller than a first preset time or not;
if the set rinsing times are less than the first preset times, increasing the rinsing times; and/or
And if the set rinsing times are larger than or equal to the first preset times, not adjusting the rinsing times.
5. The defoaming method according to claim 1, wherein the step of performing different defoaming operations according to the process stage further comprises:
if the washing equipment is in a rinsing stage, reducing the rotation frequency of the washing drum to a preset rotation frequency;
after a second preset time, acquiring the foam height in the washing cylinder again;
respectively comparing the foam height obtained again with the first preset warning height and the second preset height;
selectively controlling the washing equipment to execute the rest set programs or continue to execute the defoaming operation according to the comparison result;
the second preset height is larger than the first preset warning height but smaller than the second preset warning height, and the second preset height is larger than or equal to the height of the foam obtained last time.
6. The defoaming method according to claim 5, wherein the step of selectively controlling the washing device to execute the remaining setting program or continue the defoaming operation according to the comparison result specifically comprises:
if the obtained foam height is larger than or equal to the first preset warning height but smaller than or equal to the second preset height, controlling the washing drum to continuously operate according to the preset rotating frequency;
reducing the emptying water level of the washing equipment to a third preset emptying water level when the water draining operation is executed after the rinsing operation is finished;
after the washing equipment finishes draining, controlling the washing equipment to perform spray rinsing operation, and controlling the washing equipment to perform rotary draining operation;
reducing the dehydration acceleration of the washing drum to a third preset acceleration and/or reducing the highest dehydration speed of the washing drum to a third preset speed when the dehydration operation is performed after the drainage of the washing equipment is finished;
after the washing equipment finishes dewatering, controlling the washing equipment to perform spray rinsing operation again;
after the washing equipment finishes spraying and rinsing again, acquiring the residual rinsing times of the washing equipment;
judging whether the residual rinsing times are greater than or equal to a second preset time or not;
if the residual rinsing times are more than or equal to the second preset times, controlling the washing equipment to continuously execute rinsing operation; and/or
And if the residual rinsing times are less than the second preset times, controlling the washing equipment to finish the operation.
7. The defoaming method according to claim 5, wherein the step of selectively controlling the washing device to perform the remaining set program or continue the defoaming operation according to the comparison result further comprises:
if the obtained foam height is larger than the second preset height, controlling the washing drum to stop rotating and enabling the washing equipment to perform drainage operation;
controlling the washing apparatus to perform a dehydration operation after the washing apparatus finishes draining;
acquiring the residual rinsing times of the washing equipment after the dewatering of the washing equipment is finished;
judging whether the residual rinsing times are less than a third preset time or not;
if the residual rinsing times are less than the third preset times, acquiring the set rinsing times of the washing equipment;
judging whether the set rinsing times are smaller than a fourth preset time or not;
and if the set rinsing times are less than the fourth preset times, increasing the rinsing times.
8. The defoaming method according to claim 7, wherein the step of selectively controlling the washing device to perform the remaining set program or continue the defoaming operation according to the comparison result further comprises:
if the residual rinsing times are more than or equal to the third preset times, controlling the washing equipment to continuously execute rinsing operation; and/or
And if the set rinsing times are more than or equal to the fourth preset times, controlling the washing equipment to finish the operation.
9. The defoaming method according to claim 2 or 5, further comprising:
and if the foam height obtained again is less than the first preset warning height, controlling the washing equipment to execute the rest set program.
10. The method for defoaming according to claim 1, further comprising:
if the foam height is greater than the second preset warning height, controlling the washing drum to stop rotating; and/or
And if the foam height is smaller than the first preset warning height, performing no defoaming operation and continuing to perform a set program.
CN202110089127.5A 2021-01-22 2021-01-22 Defoaming method for washing equipment Pending CN114808390A (en)

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CN202110089127.5A CN114808390A (en) 2021-01-22 2021-01-22 Defoaming method for washing equipment
EP21920809.7A EP4265834A4 (en) 2021-01-22 2021-12-15 Defoaming method for washing device
PCT/CN2021/138316 WO2022156435A1 (en) 2021-01-22 2021-12-15 Defoaming method for washing device

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