CN112760913A - Control method and device for drainage pump, washing machine, storage medium and processor - Google Patents
Control method and device for drainage pump, washing machine, storage medium and processor Download PDFInfo
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- CN112760913A CN112760913A CN202011517052.8A CN202011517052A CN112760913A CN 112760913 A CN112760913 A CN 112760913A CN 202011517052 A CN202011517052 A CN 202011517052A CN 112760913 A CN112760913 A CN 112760913A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
- D06F33/42—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of draining
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/04—Signal transfer or data transmission arrangements
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/18—Washing liquid level
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/24—Spin speed; Drum movements
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The invention discloses a control method and a control device of a drainage pump, a washing machine, a storage medium and a processor, wherein the method comprises the following steps: dividing the dehydration stage of the washing machine into n sub-stages, wherein n is a positive integer; determining the starting and stopping time of the drainage pump of the washing machine under each sub-stage; in the dehydration stage of the washing machine, acquiring the current rotating speed of a motor of the washing machine and acquiring the current water level frequency value of an inner barrel of the washing machine; and determining the current stage of the washing machine in which n sub-stages are located according to the current rotating speed and the current water level frequency value, and controlling a drainage pump of the washing machine to operate according to the start-stop time of the current stage so as to realize the start-stop control of the drainage pump of the washing machine. This scheme through optimizing the control logic mode of drain pump, avoids the drain pump to normally open and leads to the noise too big, is favorable to noise reduction and promotes user experience.
Description
Technical Field
The invention belongs to the technical field of washing machines, and particularly relates to a control method and device of a drainage pump, a washing machine, a storage medium and a processor, in particular to an optimal control logic method and device of the drainage pump, the washing machine, the storage medium and the processor.
Background
Among the relevant scheme, washing machine's drainage device is multi-purpose the drain pump, and most washing machine is when dehydration, and the control mode to the drain pump is normally opened, and the noise that the drain pump normally opened the production can influence user experience.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention aims to provide a control method and device of a drainage pump, a washing machine, a storage medium and a processor, which are used for solving the problem that the noise generated by the normally-open drainage pump influences the user experience in the dewatering stage of the washing machine, and achieving the effect of avoiding the overlarge noise caused by the normally-open drainage pump by optimizing the control logic mode of the drainage pump, and being beneficial to reducing the noise and improving the user experience.
The invention provides a control method of a drainage pump, which comprises the following steps: dividing the dehydration stage of the washing machine into n sub-stages, wherein n is a positive integer; determining the starting and stopping time of the drainage pump of the washing machine under each sub-stage; in the dehydration stage of the washing machine, acquiring the current rotating speed of a motor of the washing machine and acquiring the current water level frequency value of an inner barrel of the washing machine; and determining the current stage of the washing machine in which n sub-stages are located according to the current rotating speed and the current water level frequency value, and controlling a drainage pump of the washing machine to operate according to the start-stop time of the current stage so as to realize the start-stop control of the drainage pump of the washing machine.
In some embodiments, the dehydration phase of the washing machine is divided into n sub-phases, including: setting a time interval of increasing the rotating speed of a motor by a set rotating speed in a dehydration stage of the washing machine as an interval, and determining a water content change value of the clothes in each interval of the dehydration stage of the washing machine; dividing the dehydration stage of the washing machine into n sub-stages according to different moisture content change values of the clothes in the dehydration stage of the washing machine; wherein, a rotation speed interval corresponds to a moisture content change value of the clothes or a change range of the moisture content change value of the clothes; a variation range of a variation value of the moisture content of the laundry or a variation value of the moisture content of the laundry corresponds to a sub-stage.
In some embodiments, determining a start-stop time of a drain pump of the washing machine at each of the sub-stages comprises: determining different water discharge amounts of the washing machine at different rotating speeds of the motor according to the water content change values of the clothes at the different rotating speeds of the motor; determining the starting and stopping time of a drainage pump of the washing machine at different rotating speeds of a motor by combining the water content change values of clothes at different rotating speeds of the motor of the washing machine and combining the model of the drainage pump of the washing machine and the drainage quantity in unit time; the start-up time includes: start time and stop time.
In some embodiments, the n sub-stages include: a first stage, a second stage, and a third stage; determining the current stage of the washing machine in the n sub-stages according to the current rotating speed and the current water level frequency value, wherein the step of determining the current stage of the washing machine in the n sub-stages comprises the following steps: if the current rotating speed is less than or equal to a first set rotating speed, determining that the current stage of the washing machine from the first stage to the third stage is the first stage; in the first stage, if the current water level frequency value is less than or equal to a first set water level, controlling the drainage pump to start, wherein the starting time is a first set starting time, and the stopping time is a first set stopping time; in the first stage, if the current water level frequency value is greater than the first set water level, determining the current stage of the washing machine in n sub-stages according to the current rotating speed and the current water level frequency value again; if the current rotating speed is greater than a first set rotating speed and less than or equal to the first set rotating speed, determining that the current stage of the washing machine from the first stage to the third stage is the second stage; in the second stage, if the current water level frequency value is less than or equal to a second set water level, controlling the drainage pump to start, wherein the starting time is a second set starting time, and the stopping time is a second set stopping time; in the second stage, if the current water level frequency value is greater than the second set water level, determining the current stage of the washing machine in the n sub-stages according to the current rotating speed and the current water level frequency value again; if the current rotating speed is greater than the second set rotating speed and less than or equal to the third set rotating speed, determining that the current stage of the washing machine from the first stage to the third stage is the third stage; in a third stage, if the current water level frequency value is less than or equal to a third set water level, controlling the drainage pump to start, wherein the starting time is a third set starting time, and the stopping time is a third set stopping time; in a third stage, if the current water level frequency value is greater than the third set water level, determining the current stage of the washing machine in the n sub-stages according to the current rotating speed and the current water level frequency value again.
In accordance with another aspect of the present invention, there is provided a drain pump control apparatus including: a control unit configured to divide a dehydration stage of the washing machine into n sub-stages, n being a positive integer; determining the starting and stopping time of the drainage pump of the washing machine under each sub-stage; the acquisition unit is configured to acquire the current rotating speed of a motor of the washing machine and acquire the current water level frequency value of an inner drum of the washing machine in a dehydration stage of the washing machine; the control unit is further configured to determine a current stage of the washing machine at n sub-stages according to the current rotation speed and the current water level frequency value, and control a drain pump of the washing machine to operate according to start-stop time of the current stage, so as to realize start-stop control of the drain pump of the washing machine.
In some embodiments, the control unit divides the dehydration phase of the washing machine into n sub-phases, including: setting a time interval of increasing the rotating speed of a motor by a set rotating speed in a dehydration stage of the washing machine as an interval, and determining a water content change value of the clothes in each interval of the dehydration stage of the washing machine; dividing the dehydration stage of the washing machine into n sub-stages according to different moisture content change values of the clothes in the dehydration stage of the washing machine; wherein, a rotation speed interval corresponds to a moisture content change value of the clothes or a change range of the moisture content change value of the clothes; a variation range of a variation value of the moisture content of the laundry or a variation value of the moisture content of the laundry corresponds to a sub-stage.
In some embodiments, the control unit, determining a start-stop time of a drain pump of the washing machine at each of the sub-stages, comprises: determining different water discharge amounts of the washing machine at different rotating speeds of the motor according to the water content change values of the clothes at the different rotating speeds of the motor; determining the starting and stopping time of a drainage pump of the washing machine at different rotating speeds of a motor by combining the water content change values of clothes at different rotating speeds of the motor of the washing machine and combining the model of the drainage pump of the washing machine and the drainage quantity in unit time; the start-up time includes: start time and stop time.
In some embodiments, the n sub-stages include: a first stage, a second stage, and a third stage; the control unit determines the current stage of the washing machine in n sub-stages according to the current rotating speed and the current water level frequency value, and comprises the following steps: if the current rotating speed is less than or equal to a first set rotating speed, determining that the current stage of the washing machine from the first stage to the third stage is the first stage; in the first stage, if the current water level frequency value is less than or equal to a first set water level, controlling the drainage pump to start, wherein the starting time is a first set starting time, and the stopping time is a first set stopping time; in the first stage, if the current water level frequency value is greater than the first set water level, determining the current stage of the washing machine in n sub-stages according to the current rotating speed and the current water level frequency value again; if the current rotating speed is greater than a first set rotating speed and less than or equal to the first set rotating speed, determining that the current stage of the washing machine from the first stage to the third stage is the second stage; in the second stage, if the current water level frequency value is less than or equal to a second set water level, controlling the drainage pump to start, wherein the starting time is a second set starting time, and the stopping time is a second set stopping time; in the second stage, if the current water level frequency value is greater than the second set water level, determining the current stage of the washing machine in the n sub-stages according to the current rotating speed and the current water level frequency value again; if the current rotating speed is greater than the second set rotating speed and less than or equal to the third set rotating speed, determining that the current stage of the washing machine from the first stage to the third stage is the third stage; in a third stage, if the current water level frequency value is less than or equal to a third set water level, controlling the drainage pump to start, wherein the starting time is a third set starting time, and the stopping time is a third set stopping time; in a third stage, if the current water level frequency value is greater than the third set water level, determining the current stage of the washing machine in the n sub-stages according to the current rotating speed and the current water level frequency value again.
In accordance with the above apparatus, a further aspect of the present invention provides a washing machine, comprising: the drain pump control device described above.
In accordance with the above method, a further aspect of the present invention provides a storage medium including a stored program, wherein when the program is executed, an apparatus in which the storage medium is located is controlled to execute the above control method of the drain pump.
In accordance with the above method, a further aspect of the present invention provides a processor for executing a program, wherein the program executes the above method for controlling a drain pump.
Therefore, according to the scheme of the invention, the dewatering stage is divided into different stages according to different rotating speeds, the starting and stopping time of the drainage pump is set according to the rotating speed, the water level frequency value and the water content change value under the corresponding rotating speed of each stage, and the overlarge noise caused by the fact that the drainage pump is normally opened is avoided by optimizing the control logic mode of the drainage pump, so that the noise is reduced, and the user experience is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic flow chart illustrating a method of controlling a drain pump according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating an embodiment of the method of the present invention for dividing the dehydration phase of the washing machine into n sub-phases;
FIG. 3 is a schematic flow chart illustrating an embodiment of determining the start-stop time of the drain pump of the washing machine at each of the sub-stages according to the method of the present invention;
FIG. 4 is a schematic structural diagram of a control device of a drain pump according to an embodiment of the present invention;
FIG. 5 is a schematic flow diagram of an embodiment of an optimal control logic for a drain pump;
FIG. 6 is a schematic view of a curve showing a relationship between a rotation speed and a water content change value.
The reference numbers in the embodiments of the present invention are as follows, in combination with the accompanying drawings:
102-a control unit; 104-acquisition unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to an embodiment of the present invention, a method for controlling a drain pump is provided, as shown in fig. 1, which is a schematic flow chart of an embodiment of the method of the present invention. The control method of the drain pump may include: step S110 to step S130.
At step S110, dividing a dehydration stage of the washing machine into n sub-stages, n being a positive integer; and determining the start-stop time of the drain pump of the washing machine under each sub-stage.
In some embodiments, the specific process of dividing the dehydration phase of the washing machine into n sub-phases in step S110 is further described with reference to a flowchart of an embodiment of dividing the dehydration phase of the washing machine into n sub-phases in the method of the present invention shown in fig. 2, which includes: step S210 and step S220.
Step S210, in the dehydration stage of the washing machine, setting a time interval of increasing the rotating speed of the motor in the dehydration stage of the washing machine by a set rotating speed as an interval, and determining the water content change value of the clothes in each interval of the dehydration stage of the washing machine.
And step S220, dividing the dehydration stage of the washing machine into n sub-stages according to different water content change values of the clothes in the dehydration stage of the washing machine. Wherein, a rotation speed interval corresponds to a moisture content change value of the laundry or a change range of the moisture content change value of the laundry. A variation range of a variation value of the moisture content of the laundry or a variation value of the moisture content of the laundry corresponds to a sub-stage.
Specifically, by monitoring the whole dewatering process, the load after sufficient wetting is respectively monitored in a section of every 100 increasing rotation speed, and the moisture content change value in each section is detected. As can be seen from the data in FIG. 2, the moisture content variation value is maximized between the rotation speed of 200-300rpm, i.e., the maximum amount of dehydrated water is obtained, and then the rotation speed is increased, so that the moisture content variation value is gradually decreased due to the gradual decrease of the moisture content of the laundry. And dividing the water content into a plurality of intervals according to the water content change values at different rotating speeds.
For example: in case of sufficiently wetting the laundry, the rotation speed is controlled through an experimental mode of the washing machine. After every 100 rotation speeds are increased, the rotation speed is maintained for 20s, water discharged in the interval is taken out, and the water discharge amount at the rotation speed is weighed. And obtaining the water content change value in the rotating speed interval by using the water discharge or the dry load weight at the rotating speed.
In some embodiments, referring to a flowchart of an example of determining the start-stop time of the drain pump of the washing machine in each sub-phase in the method of the present invention shown in fig. 3, a specific process of determining the start-stop time of the drain pump of the washing machine in each sub-phase in step S110 is further described, which includes: step S310 and step S320.
And S310, determining different water discharge amounts of the washing machine at different rotating speeds of the motor according to the water content change values of the clothes at different rotating speeds of the motor.
And step S320, determining the start-stop time of the drainage pump at different rotating speeds of the motor by combining the water content change values of the clothes at different rotating speeds of the motor of the washing machine and combining the model of the drainage pump of the washing machine and the drainage quantity in unit time. The start-up time includes: start time and stop time.
Specifically, values of water discharge capacity at different rotation speeds are calculated according to the water content change values, the water discharge capacity of the drainage pump in unit time is different according to different types of the drainage pump, and the start time Tn and the stop time Tn of the drainage pump are set at different rotation speed stages according to the water content change values. In the dewatering process, the temporary water level in the drum is not higher than the bottom of the inner drum, different critical values SWn of water level frequency values are set according to different machine requirements, and whether the drainage pump is started or not is judged according to whether the water level frequency values are close to the critical values SWn or not. The smaller the water level frequency value is, the higher the water level value is.
At step S120, in a dehydration stage of the washing machine, a current rotation speed of a motor of the washing machine is acquired, and a current water level frequency value of an inner tub of the washing machine is acquired. For example: the current rotation speed of the motor of the washing machine may be detected using a speed sensor, and the current water level frequency value of the inner tub of the washing machine may be detected using a water level sensor. The inner drum of the washing machine may be the drum of a drum washing machine.
In step S130, determining a current stage of the washing machine at n sub-stages according to the current rotation speed and the current water level frequency value, and controlling a drain pump of the washing machine to operate according to start-stop time of the current stage, so as to realize start-stop control of the drain pump of the washing machine in a dehydration stage of the washing machine.
Specifically, under the condition that n is 3, dividing the water content change value into a plurality of intervals according to the water content change values at different rotating speeds, setting a water level frequency value for starting the drainage pump, starting the drainage pump when the water level reaches the set water level frequency value, stopping the drainage pump after finishing the set start-stop time, detecting the rotating speed and the water level frequency value again, and judging whether the drainage pump is started again. Because the moisture content change values under different rotating speeds are different, the dehydration process is divided into three intervals, and the start-stop time of the drainage pump is set according to the moisture content change values. Through optimizing the control logic mode of the drainage pump, the problem that the drainage pump is normally opened to cause the overlarge influence of noise on user experience is avoided, and the power consumption can be reduced to achieve the energy-saving effect.
In some embodiments, the n sub-stages include: a first stage, a second stage, and a third stage.
Specifically, the whole dewatering process is divided into three sections according to the rotation speed, wherein the three sections are respectively 0-n 1, n 1-n 2 and n 2-n 3, n1 is a first set rotation speed, n2 is a second set rotation speed, and n3 is a third set rotation speed.
In step S130, determining the current stage of the washing machine in the n sub-stages according to the current rotation speed and the current water level frequency value, where the determining includes any one of the following determining situations:
the first determination case: and if the current rotating speed is less than or equal to a first set rotating speed, determining that the current stage of the washing machine from the first stage to the third stage is the first stage. In the first stage, if the current water level frequency value is less than or equal to a first set water level, the drainage pump is controlled to start, the starting time is a first set starting time, and the stopping time is a first set stopping time. In the first stage, if the current water level frequency value is greater than the first set water level, determining the current stage of the washing machine in the n sub-stages according to the current rotating speed and the current water level frequency value again.
Specifically, if the current rotating speed is between 0 and n1, detecting whether the current water level frequency value is smaller than a first set water level frequency value SW1, if the current water level frequency value is smaller than the first set water level frequency value SW1, starting the drainage pump for a first set starting time period T1, stopping the drainage pump for a first set stopping time period T1, and then judging the current rotating speed and the current water level frequency value again.
Second determination case: and if the current rotating speed is greater than the first set rotating speed and less than or equal to the first set rotating speed, determining that the current stage of the washing machine from the first stage to the third stage is the second stage. And in the second stage, if the current water level frequency value is less than or equal to a second set water level, controlling the drainage pump to start, wherein the starting time is a second set starting time, and the stopping time is a second set stopping time. And in the second stage, if the current water level frequency value is greater than the second set water level, determining the current stage of the washing machine in the n sub-stages according to the current rotating speed and the current water level frequency value again.
Specifically, if the current rotating speed is between n1 and n2, detecting whether the current water level frequency value is smaller than a second set water level frequency value SW2, if the current water level frequency value is smaller than the second set water level frequency value SW2, starting the drainage pump for a second set starting time period T2, stopping the drainage pump for a second set stopping time period T2, and then judging the current rotating speed and the current water level frequency value again.
The third determination scenario: and if the current rotating speed is greater than the second set rotating speed and less than or equal to the third set rotating speed, determining that the current stage of the washing machine from the first stage to the third stage is the third stage. In the third stage, if the current water level frequency value is less than or equal to a third set water level, the drainage pump is controlled to start, the starting time is a third set starting time, and the stopping time is a third set stopping time. In a third stage, if the current water level frequency value is greater than the third set water level, determining the current stage of the washing machine in the n sub-stages according to the current rotating speed and the current water level frequency value again.
Specifically, if the current rotating speed is between n2 and n3, detecting whether the current water level frequency value is smaller than a third set water level frequency value SW3, if the current water level frequency value is smaller than the third set water level frequency value SW3, starting the drainage pump for a third set starting time period T3, and stopping the drainage pump for a third set stopping time period T3, and then judging the rotating speed and the water level frequency value again.
Through a large amount of experimental verifications, adopt the technical scheme of this embodiment, through with the dehydration stage according to different rotational speeds divide into different stages, according to the rotational speed in every stage, water level frequency value and the moisture content variation value under the corresponding rotational speed, set for the start-stop time of drain pump, through optimizing the control logic mode of drain pump, avoid the drain pump to normally open and lead to the noise too big, be favorable to the noise reduction and promote user experience.
According to an embodiment of the present invention, there is also provided a control apparatus of a drain pump corresponding to the control method of the drain pump. Referring to fig. 4, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The control device of the drain pump may include: a control unit 102 and an acquisition unit 104.
Wherein the control unit 102 is configured to divide the dehydration stage of the washing machine into n sub-stages, n being a positive integer; and determining the start-stop time of the drain pump of the washing machine under each sub-stage. The specific functions and processes of the control unit 102 are shown in step S110.
In some embodiments, the control unit 102, dividing the dehydration phase of the washing machine into n sub-phases, includes:
the control unit 102 is further specifically configured to set, in a dehydration phase of the washing machine, a period of time for which the rotation speed of the motor in the dehydration phase of the washing machine increases by a set rotation speed to one interval, and determine a moisture content change value of the laundry in each interval of the dehydration phase of the washing machine. The specific functions and processes of the control unit 102 are also referred to in step S210.
The control unit 102 is further configured to divide the dehydration stage of the washing machine into n sub-stages according to different moisture content variation values of the laundry in the dehydration stage of the washing machine. Wherein, a rotation speed interval corresponds to a moisture content change value of the laundry or a change range of the moisture content change value of the laundry. A variation range of a variation value of the moisture content of the laundry or a variation value of the moisture content of the laundry corresponds to a sub-stage. The specific functions and processes of the control unit 102 are also referred to in step S220.
Specifically, by monitoring the whole dewatering process, the load after sufficient wetting is respectively monitored in a section of every 100 increasing rotation speed, and the moisture content change value in each section is detected. As can be seen from the data in FIG. 2, the moisture content variation value is maximized between the rotation speed of 200-300rpm, i.e., the maximum amount of dehydrated water is obtained, and then the rotation speed is increased, so that the moisture content variation value is gradually decreased due to the gradual decrease of the moisture content of the laundry. And dividing the water content into a plurality of intervals according to the water content change values at different rotating speeds.
For example: in case of sufficiently wetting the laundry, the rotation speed is controlled through an experimental mode of the washing machine. After every 100 rotation speeds are increased, the rotation speed is maintained for 20s, water discharged in the interval is taken out, and the water discharge amount at the rotation speed is weighed. And obtaining the water content change value in the rotating speed interval by using the water discharge or the dry load weight at the rotating speed.
In some embodiments, the determining, by the control unit 102, the start-stop time of the drain pump of the washing machine at each of the sub-stages includes:
the control unit 102 is further specifically configured to determine different water discharge amounts of the washing machine at different rotation speeds of the motor according to the water content change values of the laundry at the different rotation speeds of the motor. The specific functions and processes of the control unit 102 are also referred to in step S310.
The control unit 102 is further specifically configured to determine, in combination with the moisture content variation values of the laundry at different rotation speeds of the motor of the washing machine, and in combination with the model of the drain pump of the washing machine and the water displacement per unit time, start-stop times of the drain pump at different rotation speeds of the motor. The start-up time includes: start time and stop time. The specific functions and processes of the control unit 102 are also referred to in step S320.
Specifically, values of water discharge capacity at different rotation speeds are calculated according to the water content change values, the water discharge capacity of the drainage pump in unit time is different according to different types of the drainage pump, and the start time Tn and the stop time Tn of the drainage pump are set at different rotation speed stages according to the water content change values. In the dewatering process, the temporary water level in the drum is not higher than the bottom of the inner drum, different critical values SWn of water level frequency values are set according to different machine requirements, and whether the drainage pump is started or not is judged according to whether the water level frequency values are close to the critical values SWn or not.
An obtaining unit 104 configured to obtain a current rotation speed of a motor of the washing machine and obtain a current water level frequency value of an inner drum of the washing machine at a dehydration stage of the washing machine. The specific function and processing of the acquisition unit 104 are referred to in step S120. For example: the current rotation speed of the motor of the washing machine may be detected using a speed sensor, and the current water level frequency value of the inner tub of the washing machine may be detected using a water level sensor. The inner drum of the washing machine may be the drum of a drum washing machine.
The control unit 102 is further configured to determine a current stage of the washing machine at which n sub-stages are located according to the current rotation speed and the current water level frequency value, and control a drain pump of the washing machine to operate according to start-stop time of the current stage, so as to realize start-stop control of the drain pump of the washing machine at a dehydration stage of the washing machine. The specific function and processing of the control unit 102 are also referred to in step S130.
Specifically, under the condition that n is 3, dividing the water content change value into a plurality of intervals according to the water content change values at different rotating speeds, setting a water level frequency value for starting the drainage pump, starting the drainage pump when the water level reaches the set water level frequency value, stopping the drainage pump after finishing the set start-stop time, detecting the rotating speed and the water level frequency value again, and judging whether the drainage pump is started again. Because the moisture content change values under different rotating speeds are different, the dehydration process is divided into three intervals, and the start-stop time of the drainage pump is set according to the moisture content change values. Through optimizing the control logic mode of the drainage pump, the problem that the drainage pump is normally opened to cause the overlarge influence of noise on user experience is avoided, and the power consumption can be reduced to achieve the energy-saving effect.
In some embodiments, the n sub-stages include: a first stage, a second stage, and a third stage.
Specifically, the whole dewatering process is divided into three sections according to the rotation speed, wherein the three sections are respectively 0-n 1, n 1-n 2 and n 2-n 3, n1 is a first set rotation speed, n2 is a second set rotation speed, and n3 is a third set rotation speed.
The control unit 102 determines the current stage of the washing machine in the n sub-stages according to the current rotation speed and the current water level frequency value, and includes any one of the following determination situations:
the first determination case: the control unit 102 is specifically configured to determine that the current stage of the washing machine in the first to third stages is the first stage if the current rotation speed is less than or equal to a first set rotation speed. In the first stage, if the current water level frequency value is less than or equal to a first set water level, the drainage pump is controlled to start, the starting time is a first set starting time, and the stopping time is a first set stopping time. In the first stage, if the current water level frequency value is greater than the first set water level, determining the current stage of the washing machine in the n sub-stages according to the current rotating speed and the current water level frequency value again.
Specifically, if the current rotating speed is between 0 and n1, detecting whether the current water level frequency value is smaller than a first set water level frequency value SW1, if the current water level frequency value is smaller than the first set water level frequency value SW1, starting the drainage pump for a first set starting time period T1, stopping the drainage pump for a first set stopping time period T1, and then judging the current rotating speed and the current water level frequency value again.
Second determination case: the control unit 102 is specifically configured to determine that the current stage of the washing machine from the first stage to the third stage is the second stage if the current rotation speed is greater than the first set rotation speed and is less than or equal to the first set rotation speed. And in the second stage, if the current water level frequency value is less than or equal to a second set water level, controlling the drainage pump to start, wherein the starting time is a second set starting time, and the stopping time is a second set stopping time. And in the second stage, if the current water level frequency value is greater than the second set water level, determining the current stage of the washing machine in the n sub-stages according to the current rotating speed and the current water level frequency value again.
Specifically, if the current rotating speed is between n1 and n2, detecting whether the current water level frequency value is smaller than a second set water level frequency value SW2, if the current water level frequency value is smaller than the second set water level frequency value SW2, starting the drainage pump for a second set starting time period T2, stopping the drainage pump for a second set stopping time period T2, and then judging the current rotating speed and the current water level frequency value again.
The third determination scenario: the control unit 102 is specifically configured to determine that the current stage of the washing machine from the first stage to the third stage is the third stage if the current rotation speed is greater than the second set rotation speed and less than or equal to the third set rotation speed. In the third stage, if the current water level frequency value is less than or equal to a third set water level, the drainage pump is controlled to start, the starting time is a third set starting time, and the stopping time is a third set stopping time. In a third stage, if the current water level frequency value is greater than the third set water level, determining the current stage of the washing machine in the n sub-stages according to the current rotating speed and the current water level frequency value again.
Specifically, if the current rotating speed is between n2 and n3, detecting whether the current water level frequency value is smaller than a third set water level frequency value SW3, if the current water level frequency value is smaller than the third set water level frequency value SW3, starting the drainage pump for a third set starting time period T3, and stopping the drainage pump for a third set stopping time period T3, and then judging the rotating speed and the water level frequency value again.
Since the processes and functions implemented by the apparatus of this embodiment substantially correspond to the embodiments, principles and examples of the method shown in fig. 1 to 3, the description of this embodiment is not detailed, and reference may be made to the related descriptions in the foregoing embodiments, which are not repeated herein.
Through a large number of tests, the technical scheme of the invention is adopted, the dewatering stage is divided into different stages according to different rotating speeds, and the start-stop time of the drainage pump is set according to the rotating speed, the water level frequency value and the water content change value under the corresponding rotating speed of each stage, so that the noise generated by the drainage pump in the dewatering process can be reduced, and the user experience is improved.
According to an embodiment of the present invention, there is also provided a washing machine corresponding to a control apparatus of a drain pump. The washing machine may include: the drain pump control device described above.
In the whole dewatering process of the washing machine, the dewatering amount in different periods is different, and the drainage amount is less towards the rear. Therefore, the drainage pump is normally opened in the dewatering stage, firstly, noise can be generated to influence the user experience, and the problem of excessive power consumption can be caused.
In some embodiments, the scheme of the invention provides an optimized control logic mode for a drainage pump of a washing machine, wherein a dehydration stage is divided into different stages according to different rotating speeds, and the start-stop time of the drainage pump is set according to the rotating speed, the water level frequency value and the water content change value under the corresponding rotating speed of each stage, so that the noise generated by the drainage pump in the dehydration process can be reduced, and the user experience is improved; and the control logic of the drainage pump can be optimized, and the power consumption can be reduced. The washing machine can be a household drum washing machine and can also be a washing and drying machine.
Like this, through optimizing the control logic mode of drain pump, avoid the drain pump to normally open the problem that leads to the too big influence user experience of noise, also can reduce the power consumption and reach energy-conserving effect.
The following describes an exemplary implementation process of the scheme of the present invention with reference to the examples shown in fig. 4 and fig. 5.
Fig. 4 is a schematic flow chart of an embodiment of an optimal control logic of the drain pump, and fig. 5 is a schematic curve diagram of a relationship between a rotation speed and a water content change value.
As shown in fig. 4, the optimal control logic of the drain pump includes:
step 1, starting a dehydration process.
And 2, judging the start-stop time of the drainage pump according to the rotating speed and the water level frequency value.
Dividing the water content variation values into a plurality of intervals according to the water content variation values at different rotating speeds, setting a water level frequency value for starting the drainage pump, starting the drainage pump when the water level reaches the set water level frequency value, stopping the drainage pump after the set start-stop time is finished, detecting the rotating speed and the water level frequency value again, and judging whether the drainage pump is started again. Because the moisture content change values under different rotating speeds are different, the dehydration process is divided into three intervals, and the start-stop time of the drainage pump is set according to the moisture content change values.
Specifically, by monitoring the whole dewatering process, the load after sufficient wetting is respectively monitored in a section of every 100 increasing rotation speed, and the moisture content change value in each section is detected. As can be seen from the data in FIG. 5, the moisture content variation value is maximized between the rotation speed of 200-300rpm, i.e., the maximum amount of dehydrated water is obtained, and then the rotation speed is increased, so that the moisture content variation value is gradually decreased due to the gradual decrease of the moisture content of the laundry. Therefore, the value of the water discharge capacity at different rotating speeds can be calculated according to the water content change value, the water discharge capacity of the water discharge pump in unit time is different according to different types of the water discharge pump, and the starting time Tn and the stopping time Tn of the water discharge pump are set at different rotating speed stages according to the water content change value. In the dewatering process, the temporary water level in the drum is not higher than the bottom of the inner drum, different critical values SWn of water level frequency values are set according to different machine requirements, and whether the drainage pump is started or not is judged according to whether the water level frequency values are close to the critical values SWn or not.
Wherein, the load after fully wetting is monitored in an interval of every 100 increasing rotating speeds, and the change value of the water content in each interval is detected, and the method comprises the following steps: in case of sufficiently wetting the laundry, the rotation speed is controlled through an experimental mode of the washing machine. After every 100 rotation speeds are increased, the rotation speed is maintained for 20s, water discharged in the interval is taken out, and the water discharge amount at the rotation speed is weighed. And obtaining the water content change value in the rotating speed interval by using the water discharge or the dry load weight at the rotating speed.
According to the moisture content change value, calculate the value that can discharge water yield under the different rotational speeds, include: the weight of water discharged at this rotation speed was weighed by maintaining the rotation speed for 20 seconds.
The method for setting the starting time Tn and the stopping time Tn of the drainage pump at different rotating speed stages comprises the following steps: the specifications of the drainage pumps of different brands are different, and the drainage quantity per minute is also different; and determining the starting and stopping time according to the water discharge per minute of the drainage pump and the water discharge at the rotating speed. For example: the water discharge amount is more at low rotating speed, the water level frequency value is started for 20s when the set water level frequency value is reached, and the water level frequency value is continuously detected after the water level frequency value is stopped for 3 s; and the water discharge amount is less at the high rotating speed, the water level frequency value is started for 15s when the set water level frequency value is reached, and the water level frequency value is continuously detected after the water level frequency value is stopped for 3 s.
According to different machines needs to set up different water level frequency value critical values SWn, whether come the judgement to start the drain pump according to whether the water level frequency value is close critical value SWn, include: different machines have different rated capacities, such as 8kg, 10kg and 12kg, so the detected critical water level frequency values are different. The critical water level frequency value is used for preventing the phenomenon that the liquid level in the barrel is too high when the barrel rotates at a high speed, so that the rotation of the barrel is influenced to cause unbalanced dehydration. Because the cylinder shakes during high-speed rotation, water at the bottom of the cylinder is easy to shake, the set critical water level frequency value is lower than the low-speed water level frequency value during high-speed rotation, and normal dehydration process is prevented from being influenced.
According to the logic, the whole dehydration process is divided into three sections according to the rotation speed, wherein the three sections are respectively 0-n 1, n 1-n 2 and n 2-n 3, n1 is a first set rotation speed, n2 is a second set rotation speed, and n3 is a third set rotation speed.
If the current rotating speed is between 0 and n1, detecting whether the current water level frequency value is smaller than a first set water level frequency value SW1, if the current water level frequency value is smaller than the first set water level frequency value SW1, starting the drainage pump for a first set starting time length T1, stopping the drainage pump for a first set stopping time length T1, and then judging the current rotating speed and the current water level frequency value again.
And further, if the current rotating speed is between n1 and n2, detecting whether the current water level frequency value is smaller than a second set water level frequency value SW2, if the current water level frequency value is smaller than the second set water level frequency value SW2, starting the drainage pump for a second set starting time period T2, stopping the drainage pump for a second set stopping time period T2, and then judging the current rotating speed and the current water level frequency value again.
And further, if the current rotating speed is between n2 and n3, detecting whether the current water level frequency value is smaller than a third set water level frequency value SW3, if the current water level frequency value is smaller than the third set water level frequency value SW3, starting the drainage pump for a third set starting time period T3, stopping the drainage pump for a third set stopping time period T3, and then judging the rotating speed and the water level frequency value again.
And if the detected current water level frequency value does not reach the nth set water level frequency value SWn value, controlling the drainage pump to continuously close, and judging the current rotating speed and the current water level frequency value again, wherein n is a positive integer.
In the scheme of the invention, the starting and stopping control mode of the drainage pump is to determine whether to start the drainage pump according to the rotating speed and the water level frequency value, and the starting and stopping time is set in advance according to the water content change value under each rotating speed. In some schemes, the starting and the stopping of the drainage control are judged according to the load condition in the drainage pump; in other schemes, if the low-speed drying stage judges the starting and stopping of the drainage pump according to the water level, if the hot throwing stage judges the starting and stopping of the drainage pump according to the rotating speed.
In the scheme of the invention, the starting and stopping time of the drainage pump is calculated by setting the starting and stopping time of the drainage pump according to the rotating speed of different stages and the water content change value under the rotating speed. In some schemes, the working current or working power of the drainage pump is monitored, the internal load is judged to be in a water-borne or water-gas mixed state, and the start-stop time is automatically controlled; in other schemes, the water level controller is kept in a normally open state when the rotating speed is increased, and the start-stop time is automatically controlled according to the water level after the rotating speed is stable.
Since the processes and functions of the washing machine of this embodiment are basically corresponding to the embodiments, principles and examples of the apparatus shown in fig. 4, the description of this embodiment is not given in detail, and reference may be made to the related descriptions in the embodiments, which are not repeated herein.
Through a large number of tests, the technical scheme of the invention is adopted, the dewatering stage is divided into different stages according to different rotating speeds, and the start-stop time of the drainage pump is set according to the rotating speed, the water level frequency value and the water content change value under the corresponding rotating speed of each stage, so that the control logic of the drainage pump can be optimized, and the power consumption can be reduced.
According to an embodiment of the present invention, there is also provided a storage medium corresponding to a control method of a drain pump, the storage medium including a stored program, wherein an apparatus in which the storage medium is controlled when the program is executed performs the above-described control method of the drain pump.
Since the processing and functions implemented by the storage medium of this embodiment substantially correspond to the embodiments, principles, and examples of the methods shown in fig. 1 to fig. 3, details are not described in the description of this embodiment, and reference may be made to the related descriptions in the foregoing embodiments, which are not described herein again.
Through a large number of tests, the technical scheme provided by the invention is adopted, the dehydration stage is divided into different stages according to different rotating speeds, and the start-stop time of the drainage pump is set according to the rotating speed, the water level frequency value and the water content change value under the corresponding rotating speed of each stage, so that the control logic mode of the drainage pump can be optimized, the user experience is improved, and the energy is saved.
According to an embodiment of the present invention, there is also provided a processor corresponding to a control method of a drain pump, the processor being configured to run a program, wherein the program is run to execute the above-described control method of the drain pump.
Since the processing and functions implemented by the processor of this embodiment substantially correspond to the embodiments, principles, and examples of the methods shown in fig. 1 to fig. 3, details are not described in the description of this embodiment, and reference may be made to the related descriptions in the foregoing embodiments, which are not described herein again.
Through a large number of tests, the technical scheme of the invention is adopted, the dewatering stage is divided into different stages according to different rotating speeds, and the starting and stopping time of the drainage pump is set according to the rotating speed, the water level frequency value and the water content change value under the corresponding rotating speed of each stage, so that the problem that the user experience is influenced by overlarge noise caused by the fact that the drainage pump is normally opened can be avoided, and the power consumption can be reduced to achieve the energy-saving effect.
In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (11)
1. A control method of a drain pump, characterized by comprising:
dividing the dehydration stage of the washing machine into n sub-stages, wherein n is a positive integer; determining the starting and stopping time of the drainage pump of the washing machine under each sub-stage;
in the dehydration stage of the washing machine, acquiring the current rotating speed of a motor of the washing machine and acquiring the current water level frequency value of an inner barrel of the washing machine;
and determining the current stage of the washing machine in which n sub-stages are located according to the current rotating speed and the current water level frequency value, and controlling a drainage pump of the washing machine to operate according to the start-stop time of the current stage so as to realize the start-stop control of the drainage pump of the washing machine.
2. The method of controlling a drain pump of claim 1, wherein dividing a dehydration phase of a washing machine into n sub-phases comprises:
setting a time interval of increasing the rotating speed of a motor by a set rotating speed in a dehydration stage of the washing machine as an interval, and determining a water content change value of the clothes in each interval of the dehydration stage of the washing machine;
dividing the dehydration stage of the washing machine into n sub-stages according to different moisture content change values of the clothes in the dehydration stage of the washing machine; wherein, a rotation speed interval corresponds to a moisture content change value of the clothes or a change range of the moisture content change value of the clothes; a variation range of a variation value of the moisture content of the laundry or a variation value of the moisture content of the laundry corresponds to a sub-stage.
3. The method of claim 2, wherein determining a start-stop time of a drain pump of the washing machine at each of the sub-stages comprises:
determining different water discharge amounts of the washing machine at different rotating speeds of the motor according to the water content change values of the clothes at the different rotating speeds of the motor;
determining the starting and stopping time of a drainage pump of the washing machine at different rotating speeds of a motor by combining the water content change values of clothes at different rotating speeds of the motor of the washing machine and combining the model of the drainage pump of the washing machine and the drainage quantity in unit time; the start-up time includes: start time and stop time.
4. A method of controlling a drain pump according to claim 2 or 3, wherein the n sub-stages comprise: a first stage, a second stage, and a third stage;
determining the current stage of the washing machine in the n sub-stages according to the current rotating speed and the current water level frequency value, wherein the step of determining the current stage of the washing machine in the n sub-stages comprises the following steps:
if the current rotating speed is less than or equal to a first set rotating speed, determining that the current stage of the washing machine from the first stage to the third stage is the first stage; in the first stage, if the current water level frequency value is less than or equal to a first set water level, controlling the drainage pump to start, wherein the starting time is a first set starting time, and the stopping time is a first set stopping time; in the first stage, if the current water level frequency value is greater than the first set water level, determining the current stage of the washing machine in n sub-stages according to the current rotating speed and the current water level frequency value again;
if the current rotating speed is greater than a first set rotating speed and less than or equal to the first set rotating speed, determining that the current stage of the washing machine from the first stage to the third stage is the second stage; in the second stage, if the current water level frequency value is less than or equal to a second set water level, controlling the drainage pump to start, wherein the starting time is a second set starting time, and the stopping time is a second set stopping time; in the second stage, if the current water level frequency value is greater than the second set water level, determining the current stage of the washing machine in the n sub-stages according to the current rotating speed and the current water level frequency value again;
if the current rotating speed is greater than the second set rotating speed and less than or equal to the third set rotating speed, determining that the current stage of the washing machine from the first stage to the third stage is the third stage; in a third stage, if the current water level frequency value is less than or equal to a third set water level, controlling the drainage pump to start, wherein the starting time is a third set starting time, and the stopping time is a third set stopping time; in a third stage, if the current water level frequency value is greater than the third set water level, determining the current stage of the washing machine in the n sub-stages according to the current rotating speed and the current water level frequency value again.
5. A control apparatus for a drain pump, comprising:
a control unit configured to divide a dehydration stage of the washing machine into n sub-stages, n being a positive integer; determining the starting and stopping time of the drainage pump of the washing machine under each sub-stage;
the acquisition unit is configured to acquire the current rotating speed of a motor of the washing machine and acquire the current water level frequency value of an inner drum of the washing machine in a dehydration stage of the washing machine;
the control unit is further configured to determine a current stage of the washing machine at n sub-stages according to the current rotation speed and the current water level frequency value, and control a drain pump of the washing machine to operate according to start-stop time of the current stage, so as to realize start-stop control of the drain pump of the washing machine.
6. The control apparatus of a drain pump according to claim 5, wherein the control unit divides the dehydration stage of the washing machine into n sub-stages, including:
setting a time interval of increasing the rotating speed of a motor by a set rotating speed in a dehydration stage of the washing machine as an interval, and determining a water content change value of the clothes in each interval of the dehydration stage of the washing machine;
dividing the dehydration stage of the washing machine into n sub-stages according to different moisture content change values of the clothes in the dehydration stage of the washing machine; wherein, a rotation speed interval corresponds to a moisture content change value of the clothes or a change range of the moisture content change value of the clothes; a variation range of a variation value of the moisture content of the laundry or a variation value of the moisture content of the laundry corresponds to a sub-stage.
7. Control device for a drain pump according to claim 6, characterized in that said control unit, determining the start-stop times of the drain pump of the washing machine at each of said sub-phases, comprises:
determining different water discharge amounts of the washing machine at different rotating speeds of the motor according to the water content change values of the clothes at the different rotating speeds of the motor;
determining the starting and stopping time of a drainage pump of the washing machine at different rotating speeds of a motor by combining the water content change values of clothes at different rotating speeds of the motor of the washing machine and combining the model of the drainage pump of the washing machine and the drainage quantity in unit time; the start-up time includes: start time and stop time.
8. Control device for a drain pump according to claim 6 or 7, characterized in that the n sub-phases comprise: a first stage, a second stage, and a third stage;
the control unit determines the current stage of the washing machine in n sub-stages according to the current rotating speed and the current water level frequency value, and comprises the following steps:
if the current rotating speed is less than or equal to a first set rotating speed, determining that the current stage of the washing machine from the first stage to the third stage is the first stage; in the first stage, if the current water level frequency value is less than or equal to a first set water level, controlling the drainage pump to start, wherein the starting time is a first set starting time, and the stopping time is a first set stopping time; in the first stage, if the current water level frequency value is greater than the first set water level, determining the current stage of the washing machine in n sub-stages according to the current rotating speed and the current water level frequency value again;
if the current rotating speed is greater than a first set rotating speed and less than or equal to the first set rotating speed, determining that the current stage of the washing machine from the first stage to the third stage is the second stage; in the second stage, if the current water level frequency value is less than or equal to a second set water level, controlling the drainage pump to start, wherein the starting time is a second set starting time, and the stopping time is a second set stopping time; in the second stage, if the current water level frequency value is greater than the second set water level, determining the current stage of the washing machine in the n sub-stages according to the current rotating speed and the current water level frequency value again;
if the current rotating speed is greater than the second set rotating speed and less than or equal to the third set rotating speed, determining that the current stage of the washing machine from the first stage to the third stage is the third stage; in a third stage, if the current water level frequency value is less than or equal to a third set water level, controlling the drainage pump to start, wherein the starting time is a third set starting time, and the stopping time is a third set stopping time; in a third stage, if the current water level frequency value is greater than the third set water level, determining the current stage of the washing machine in the n sub-stages according to the current rotating speed and the current water level frequency value again.
9. A washing machine, characterized by comprising: control device of a drain pump according to any of claims 5 to 8.
10. A storage medium characterized by comprising a stored program, wherein an apparatus in which the storage medium is controlled when the program is executed performs the control method of the drain pump according to any one of claims 1 to 4.
11. A processor, characterized in that it is configured to run a program, wherein the program when running executes a method of controlling a drain pump according to any one of claims 1 to 4.
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