CN114531073A - Drainage pump control method, device, equipment and storage medium - Google Patents

Drainage pump control method, device, equipment and storage medium Download PDF

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Publication number
CN114531073A
CN114531073A CN202011196586.5A CN202011196586A CN114531073A CN 114531073 A CN114531073 A CN 114531073A CN 202011196586 A CN202011196586 A CN 202011196586A CN 114531073 A CN114531073 A CN 114531073A
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CN
China
Prior art keywords
motor
drainage pump
pump
controlling
preset
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Pending
Application number
CN202011196586.5A
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Chinese (zh)
Inventor
吴强
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Wuxi Little Swan Electric Co Ltd
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Wuxi Little Swan Electric Co Ltd
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Publication date
Application filed by Wuxi Little Swan Electric Co Ltd filed Critical Wuxi Little Swan Electric Co Ltd
Priority to CN202011196586.5A priority Critical patent/CN114531073A/en
Priority to PCT/CN2021/117238 priority patent/WO2022089023A1/en
Publication of CN114531073A publication Critical patent/CN114531073A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
    • 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 
    • D06F39/08—Liquid supply or discharge arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0027—Varying behaviour or the very pump
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
    • H02P21/18—Estimation of position or speed
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
    • H02P21/20—Estimation of torque
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/22—Current control, e.g. using a current control loop
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/10—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors for preventing overspeed or under speed

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Abstract

The application provides a drainage pump control method, a drainage pump control device, drainage pump control equipment and a storage medium, wherein the method comprises the following steps: controlling a motor of the drainage pump to change the rotation direction every other first preset time; collecting motor operation parameters in the motor rotation process in real time; determining whether the drain pump is clogged in the first direction according to current motor operation parameters; the motor is controlled to rotate in a second direction opposite to the first direction in response to the drain pump being clogged in the first direction. This application control motor changes the rotation direction periodically, can effectively reduce the one-way jam condition of drain pump. And when the blockage is determined, the motor is controlled to be switched to the reverse operation, so that the higher drainage efficiency can be ensured, the motor cannot be heated, the drainage pump is prevented from generating large noise, and the resource waste under the condition of unidirectional blockage of the drainage pump is reduced. And the pump runs in the opposite direction under the condition of unidirectional blockage, so that sundries wound on the impeller of the drainage pump can be removed, and the unidirectional blockage of the drainage pump can be dredged.

Description

Drainage pump control method, device, equipment and storage medium
Technical Field
The application belongs to the technical field of electrical equipment, and particularly relates to a drainage pump control method, device, equipment and storage medium.
Background
The household appliances such as washing machines, air conditioners, dish washing machines and the like are provided with a drainage pump and a corresponding motor, a motor shaft of the motor is connected with an impeller of the drainage pump, and the motor drives the impeller to rotate so as to drain water. The rotation direction of the motor is consistent with that of the impeller of the drainage pump, and the motor can be controlled to change the rotation direction by changing three-phase control parameters of the motor U, V, W, so that the impeller of the drainage pump is driven to change the rotation direction. The suction force generated by the impeller of the drainage pump can discharge water in the household appliance regardless of the forward rotation or the reverse rotation of the impeller.
In the related art, when the household electrical equipment runs a drainage program, the motor of the drainage pump is controlled by the main control panel to run at a constant rotating speed for drainage, and the motor is controlled to stop after drainage is finished. However, under the condition that the drainage pump is blocked, the motor is still controlled to run at a high constant rotating speed, so that the temperature of the motor is increased, the drainage pump generates high noise, the drainage efficiency is low, and the resource waste is caused.
Disclosure of Invention
The application provides a drainage pump control method, a drainage pump control device, equipment and a storage medium, wherein a motor is controlled to periodically change the rotation direction, and the one-way blocking condition of a drainage pump can be effectively reduced. And when the blockage is determined, the motor is controlled to be switched to the reverse operation, so that the higher drainage efficiency can be ensured, the motor cannot be heated, the drainage pump is prevented from generating large noise, and the resource waste under the condition of unidirectional blockage of the drainage pump is reduced. And the pump runs in the opposite direction under the condition of unidirectional blockage, so that sundries wound on the impeller of the drainage pump can be removed, and the unidirectional blockage of the drainage pump can be dredged.
An embodiment of a first aspect of the present application provides a drainage pump control method, including:
controlling a motor of the drainage pump to change the rotation direction every other first preset time;
collecting motor operation parameters in the motor rotation process in real time;
determining whether the drainage pump is blocked in a first direction according to current motor operation parameters, wherein the first direction is a current rotation direction;
controlling the motor to rotate in a second direction opposite the first direction in response to the drain pump being clogged in the first direction.
In some embodiments of the present application, after the controlling the motor to rotate in the second direction, the method further includes:
determining that the time length of the motor rotating according to the second direction reaches a second preset time length, wherein the second preset time length is greater than or equal to the first preset time length;
controlling the motor to rotate according to the first direction;
determining that the drainage pump is no longer blocked in the first direction, and performing the operation of controlling the motor of the drainage pump to change the rotation direction every first preset time;
determining that the drain pump is still clogged in the first direction, and performing the operation of controlling the motor to rotate in a second direction.
In some embodiments of the present application, the method further comprises:
and controlling the motor to rotate for the first preset time according to a second direction according to the fact that the drainage pump is not blocked in the first direction and the first preset time is up.
In some embodiments of the present application, the method further comprises:
determining whether the drain pump is blocked in the second direction according to motor operation parameters in the process that the motor rotates in the second direction;
controlling the motor to rotate in the first direction in response to the drain pump being clogged in the second direction.
In some embodiments of the present application, the method further comprises:
determining that a number of consecutive times that clogging of the drain pump is detected in both the first direction and the second direction is greater than or equal to a preset number of times;
and controlling the motor to stop, and sending prompt information for prompting the blockage of the drainage pump.
In some embodiments of the present application, the determining whether the drain pump is clogged in the first direction according to the current motor operating parameter includes:
determining that the drainage pump is blocked in a first direction according to the fact that the current motor operation parameters comprise a phase current which is greater than a preset current threshold; alternatively, the first and second electrodes may be,
determining that the drainage pump is blocked in a first direction according to the fact that the current running power included in the running parameters of the motor is larger than a preset power threshold; alternatively, the first and second electrodes may be,
determining that the drainage pump is blocked in a first direction according to the condition that the rotation speed included in the current motor operation parameters is less than a preset rotation speed threshold; alternatively, the first and second electrodes may be,
determining that the drain pump is clogged in the first direction based on a torque included in the current motor operating parameter being greater than a preset torque threshold.
An embodiment of a second aspect of the present application provides a drain pump control apparatus, including:
the rotation direction control module is used for controlling the motor of the drainage pump to change the rotation direction every other first preset time;
the parameter acquisition module is used for acquiring motor operation parameters in the motor rotation process in real time;
the blockage determining module is used for determining whether the drainage pump is blocked in a first direction according to the current motor operation parameters, wherein the first direction is the current rotation direction; controlling the motor to rotate in a second direction opposite the first direction in response to the drain pump being clogged in the first direction.
In some embodiments of the present application, the rotation direction control module is further configured to determine that a duration of the motor rotating in the second direction reaches a second preset duration, where the second preset duration is greater than or equal to the first preset duration; controlling the motor to rotate according to the first direction;
the blockage determining module is further used for determining that the drainage pump is not blocked in the first direction any more, and controlling a motor of the drainage pump to change the rotation direction by the rotation direction control module every other first preset time; determining that the drain pump is still clogged in the first direction, the controlling the motor to rotate in a second direction.
Embodiments of the third aspect of the present application provide a home appliance, including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor executes the computer program to implement the method of the first aspect.
An embodiment of a fourth aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, the program being executable by a processor to implement the method of the first aspect.
The technical scheme provided in the embodiment of the application at least has the following technical effects or advantages:
in the embodiment of the application, the motor for controlling the drainage pump alternately rotates forwards and backwards in the drainage process, so that after sundries are wound on the impeller of the drainage pump along one rotating direction of the motor, the rotating direction of the motor is changed, the sundries wound on the impeller can be reversely wound and removed from the impeller, and the blockage of the drainage pump can be effectively reduced. And whether the drainage pump is blocked in the current direction is determined according to the operation parameters of the motor in real time in the operation process of the motor, the motor is controlled to be switched to operate in the reverse direction when the blockage is determined, the phenomenon that the drainage pump continues to operate according to the direction when the drainage pump is blocked in a certain direction is avoided, high drainage efficiency can be ensured under the condition that the drainage pump is blocked in a single direction, the temperature of the motor cannot rise, the drainage pump is prevented from generating large noise, and the resource waste under the condition that the drainage pump is blocked in the single direction is reduced. And under the condition that the drainage pump is blocked in a single direction, the motor is controlled to run in the reverse direction, so that sundries wound on the impeller of the drainage pump can be removed, and the situation that the drainage pump is blocked in a single direction is facilitated to be dredged.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic flow chart illustrating a method for controlling a drain pump according to an embodiment of the present disclosure;
FIG. 2 is another schematic flow diagram illustrating a sump pump control method according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram illustrating a sump pump control apparatus according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a home appliance according to an embodiment of the present application;
fig. 5 is a schematic diagram of a storage medium according to an embodiment of the present application.
Detailed Description
Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.
A method, an apparatus, a device and a storage medium for controlling a drain pump according to an embodiment of the present application are described below with reference to the accompanying drawings.
The embodiment of the application provides a drainage pump control method, in the process of controlling drainage of a drainage pump, a motor of the drainage pump is controlled to alternately rotate forwards and backwards, the motor drives an impeller of the drainage pump to rotate forwards and backwards, and therefore after sundries such as hairs or threads are wound on the impeller of the drainage pump along one rotating direction of the impeller, the rotating direction of the motor is changed, the sundries wound on the impeller can be favorably removed from the impeller in a reverse winding mode, and the situation that the drainage pump is blocked can be effectively reduced. And the method determines whether the drainage pump is blocked in the current direction according to the motor operation parameters in real time in the motor operation process, controls the motor to switch to the reverse direction operation when the blockage is determined, avoids the continuous operation of the drainage pump according to the direction when the blockage is generated in a certain direction, can ensure higher drainage efficiency and avoid the temperature rise of the motor under the condition of one-way blockage of the drainage pump, avoids the generation of great noise of the drainage pump and reduces the resource waste under the condition of one-way blockage of the drainage pump.
Referring to fig. 1, the method specifically includes the following steps:
step 101: and controlling a motor of the drainage pump to change the rotation direction every a first preset time.
The execution main body of the embodiment of the application is household electrical appliance provided with a drainage pump or a main control chip arranged in the household electrical appliance. The home appliances may include washing machines, dishwashers, air conditioners, and the like.
In the process of controlling the drainage of the drainage pump by the household appliance, the motor of the drainage pump is periodically controlled to change the rotation direction. Specifically, when the drainage pump is started to drain, the drainage pump motor is controlled to operate according to a first direction, and the first direction can be a clockwise direction or a counterclockwise direction. And starting timing when the motor starts to operate, comparing the timing duration with a first preset duration, and if the timing duration is less than the first preset duration, continuing to control the motor to operate according to the first direction. And if the timed duration is greater than or equal to the first preset duration, controlling the running direction of the motor to be switched to a second direction, wherein the second direction is opposite to the first direction. And after the motor is controlled to operate for the first preset time length in the second direction, the operation direction of the motor is controlled to be switched to the first direction. The switching of the running direction of the motor is controlled in a circulating mode.
The first preset time period may be 1min, 1.5min, 2min, or the like. The embodiment of the application does not specifically limit the specific value of the first preset duration, and the setting can be performed according to the requirement in practical application.
The household appliance may have some impurities such as hairs or threads in the water solution to be discharged, and when the impurities pass through the impeller of the drainage pump along with the water flow, the impurities are easily wound on the impeller to block the normal rotation of the impeller, so that the drainage pump is blocked. The step periodically changes the running direction of the motor, is beneficial to removing sundries wound on the impeller from the impeller in a reverse winding manner, and can effectively reduce the blockage of the drainage pump.
Step 102: and collecting motor operation parameters in the motor rotation process in real time.
In the embodiment of the present application, the motor operation parameter may be a phase current, an operation power, a rotation speed or a torque of the motor.
If the motor operation parameter adopts the phase current of the motor, the current of any phase U, V, W of the motor is sampled by a current detection circuit in the motor operation process, and the phase current of the motor is obtained.
If the motor operation parameters adopt the operation power of the motor, the phase current of the motor is obtained by sampling in the above mode in the operation process of the motor. The voltage applied to the motor is detected by a voltage detection circuit. And calculating the product of the sampled phase current and the detected voltage to obtain the running power of the motor.
If the motor operation parameter adopts the rotating speed of the motor, a sensor for detecting the rotating speed can be arranged on the motor, and the rotating speed of the motor is detected through the arranged sensor. Alternatively, the current detection circuit and the voltage detection circuit detect the phase current and the voltage of the motor, respectively. The rotational speed of the motor is determined by a position sensorless control algorithm based on the sensed phase currents and voltages.
If the motor operation parameter adopts the torque of the motor, the phase current and the voltage of the motor are respectively detected by the current detection circuit and the voltage detection circuit. And calculating the running power of the motor according to the phase current and the voltage. And detecting the rotating speed of the motor by any one of the modes. And calculating the ratio of the running power to the rotating speed of the motor, wherein the ratio is the torque of the motor.
After the motor operation parameters in the motor rotation process are collected in the manner of the step, whether the drainage pump is blocked in the current rotation direction is judged through the following operation of the step 103.
Step 103: and determining whether the drainage pump is blocked in a first direction according to the current motor operation parameters, wherein the first direction is the current rotation direction.
In some embodiments of the present application, the motor operation parameter includes a phase current of the motor, and U, V, W preset current thresholds corresponding to each of the preset current thresholds are preset in the household appliance, and the preset current threshold may be 1A or 1.5A. After the phase current of the motor is detected in the manner of step 102, a preset current threshold belonging to the same phase as the detected phase current is obtained from the preset current thresholds corresponding to U, V, W. And comparing the phase current included in the motor operation parameters with the preset current threshold, and determining whether the phase current included in the motor operation parameters is greater than the preset current threshold. If the motor operating parameter includes a phase current greater than the preset current threshold, it is determined that the drain pump is blocked in a first direction. If the motor operating parameters include a phase current less than or equal to the preset current threshold, it is determined that the drain pump is unplugged in the first direction.
In other embodiments of the present application, the motor operating parameter includes an operating power of the motor, and a preset power threshold is preset in the home appliance, where the preset power threshold may be 15w or 18w, etc. After the operation power of the motor is detected in the step 102, comparing the operation power included in the operation parameters of the motor with the preset power threshold, and determining whether the operation power included in the operation parameters of the motor is greater than the preset power threshold; if the motor operating parameter includes an operating power greater than a preset power threshold, it is determined that the drain pump is clogged in the first direction. If the motor operating parameter includes an operating power less than or equal to the preset power threshold, it is determined that the drain pump is unplugged in the first direction.
In other embodiments of the present application, the operation parameter of the motor includes a rotation speed of the motor, and a preset rotation speed threshold is preset in the household appliance, where the preset rotation speed threshold may be 500r/min or 800 r/min. After the rotation speed of the motor is detected in the step 102, the rotation speed included in the motor operation parameter is compared with the preset rotation speed threshold value, and whether the rotation speed included in the motor operation parameter is smaller than the preset rotation speed threshold value is determined. If the motor operating parameter includes a rotational speed less than a preset rotational speed threshold, it is determined that the drain pump is clogged in the first direction. If the motor operating parameter includes a speed greater than or equal to the predetermined speed threshold, it is determined that the drain pump is not clogged in the first direction.
In some embodiments of the present application, the motor operating parameter includes a torque of the motor, and a preset torque threshold is preset in the household appliance, and the preset torque threshold may be 0.5N · m or 0.8N · m. After the torque of the motor is detected in the step 102, the torque included in the motor operation parameter is compared with the preset torque threshold, and it is determined whether the torque included in the motor operation parameter is greater than the preset torque threshold. If the motor operating parameter includes a torque greater than a preset torque threshold, it is determined that the drain pump is clogged in the first direction. If the motor operating parameter includes a torque less than or equal to the preset torque threshold, it is determined that the drain pump is unplugged in the first direction.
In some embodiments of the present application, only one of the motor operating parameters, such as phase current, operating power, rotational speed, torque, etc., may be used to detect if the drain pump is clogged in the first direction. In other embodiments of the present application, two or more motor operating parameters may be used for detection, and the detection accuracy may be improved by determining that the drain pump is clogged in the first direction only when clogging is detected by each of the motor operating parameters used.
If it is determined in this step that the drain pump is not clogged in the first direction and the first preset time period has been reached, the motor is controlled to rotate in a second direction opposite to the first direction, and it is determined whether the drain pump is clogged in the second direction through steps 102 and 103. If it is determined that the drain pump is clogged in the first direction, the following operation is performed in step 104.
Step 104: the motor is controlled to rotate in a second direction opposite to the first direction in response to the drain pump being clogged in the first direction.
If the drainage pump is detected to be blocked in the first direction by the mode of any embodiment, the motor is controlled to switch the rotation direction to the second direction opposite to the first direction, the continuous operation of the drainage pump in the first direction is avoided when the drainage pump is blocked in the first direction, and the operation is switched to be operated in the second direction when the drainage pump is blocked in the first direction, so that the high drainage efficiency can be ensured, the temperature of the motor cannot be raised, the drainage pump is prevented from generating great noise, and the waste of resources under the condition of unidirectional blockage of the drainage pump is reduced.
In some embodiments of the present application, the motor is switched to operate in the second direction when the drain pump is clogged in the first direction, and the operation in the second direction may be continued until the drain is finished.
Since the impeller of the drain pump is always operated in the second direction, foreign objects such as hairs or threads are easily wound on the impeller of the drain pump in the second direction, thereby preventing the impeller from operating in the second direction and even causing the impeller of the drain pump to be blocked in the second direction. The drain pump is blocked in the first direction, and after the motor rotates for a certain period of time in the second direction, the foreign objects wound on the impeller of the drain pump in the first direction may be wound in the second direction and released from the impeller.
Therefore, in other embodiments of the present application, the timing may be started when the drain pump is blocked in the first direction and the operation direction of the motor is switched to the second direction, the timing duration is compared with the second preset duration, and if it is determined that the timing duration is less than the second preset duration, the motor is controlled to continue to operate in the second direction. And if the time length of the motor rotating according to the second direction is determined to be greater than or equal to the second preset time length, controlling the motor to change the rotating direction again, namely controlling the motor to rotate according to the first direction. In controlling the motor to rotate in the first direction, it is determined whether the current drain pump is still clogged in the first direction through the operations of steps 102 and 103. If it is determined that the current drain pump is still clogged in the first direction, the motor is controlled to rotate again in the second direction. If it is determined that the current drain pump is no longer blocked in the first direction, the motor of the drain pump is controlled to change the rotation direction every a first preset time period in the manner of step 101.
The clogging of the drain pump in the first direction is caused by the rotation of the motor in the first direction for a first predetermined period of time, i.e., the impurities are entangled around the impeller of the drain pump in the first direction for a time period less than or equal to the first predetermined period of time. If the sundries are required to be wound along a second direction opposite to the first direction so as to be removed from the impeller, the sundries are required to be reversely wound and removed at least for a first preset time period on the premise that the rotating speeds of the impellers are the same. Therefore, the second preset time is set to be longer than or equal to the first preset time, so that sundries can be reversely wound and removed, and the probability of dredging the blockage of the drainage pump in the first direction is improved. The second preset time period may be 1min, 3min or 5min, etc. The embodiment of the application does not limit the specific value of the second preset duration, and the setting can be performed according to the requirement in practical application.
In the above-described process of controlling the motor to operate in the second direction, it is also determined whether the drain pump is clogged in the second direction according to the operations of steps 102 and 103. And if the drainage pump is determined to be not blocked in the second direction, continuing to control the motor to operate in the second direction until the drainage is finished. Or when the drainage pump is determined to be not blocked in the second direction, and when the time length of the motor running according to the second direction reaches a second preset time length, controlling the motor to run according to the first direction. If it is determined that the drain pump is also clogged in the second direction, the motor is controlled to rotate again in the first direction, and it is determined whether the drain pump is still clogged in the first direction through the operations of steps 102 and 103. And if the drainage pump is not blocked in the first direction any more, controlling the motor to operate in the first direction until the end, or controlling the motor to operate in the first direction for a second preset time period and then controlling the motor to operate in the second direction again.
If it is determined that the drain pump is still clogged in the first direction, indicating that the drain pump is clogged in both the first direction and the second direction, the motor may be controlled to stop, and indication information indicating clogging of the drain pump may be issued. Alternatively, the consecutive number of times the drain pump is clogged in both the first direction and the second direction may be increased by one when an interval time between the determination of the clogging of the drain pump in the first direction and the determination of the clogging of the drain pump in the second direction is less than a third preset time. And comparing the current continuous times with preset times, and if the current continuous times are determined to be less than the preset times, continuing to control the motor to operate according to the mode. And if the current continuous times are determined to be greater than or equal to the preset times, controlling the motor to stop, and sending indication information for indicating the blockage of the drainage pump.
The third preset time period may be 10s, 20s, 30s, and the like. The preset number of times may be 3 or 5, etc. The third preset duration and the specific values of the preset times are not limited in the embodiment of the application, and can be set according to requirements in practical application.
The household appliance can indicate that the drainage pump is blocked by lighting a preset indicator lamp. Or the household appliance can play voice information for prompting the blockage of the drainage pump. Or the household appliance can display text information for indicating the blockage of the drainage pump through the display screen.
In order to facilitate understanding of the control method provided by the embodiments of the present application, the following description is made with reference to the accompanying drawings. As shown in fig. 2, S1: the motor controlling the drainage pump rotates according to the first direction to drain water. S2: it is determined whether the drain pump is clogged in the first direction according to the current motor operation parameter, and if so, step S3 is performed, and if not, step S9 is performed. S3: the motor is controlled to rotate in a second direction, which is opposite to the first direction. S4: it is determined whether the drain pump is clogged in the second direction according to the current motor operation parameter, and if so, step S5 is performed, and if not, step S8 is performed. S5: the consecutive number of times the drain pump is blocked in both the first direction and the second direction is incremented by one. S6: and judging whether the continuous times after the one adding operation is equal to the preset times, if so, executing the step S7, and if not, executing the step S1. S7: and controlling the motor to stop, and sending prompt information for prompting the blockage of the drainage pump. S8: it is determined whether the period of time during which the motor is operated in the second direction reaches a second preset period of time, and if so, step S1 is performed, and if not, step S3 is performed. S9: it is determined whether the period of time in which the motor is operated in the first direction reaches a first preset period of time, and if so, step S3 is performed, and if not, step S1 is performed.
In the embodiment of the application, the motor of the drainage pump is controlled to alternately rotate forwards and reversely in the drainage process, so that after sundries are wound on the impeller along one rotation direction of the impeller of the drainage pump, the rotation direction of the motor is changed, the sundries wound on the impeller can be reversely wound and removed from the impeller, and the blockage of the drainage pump can be effectively reduced. And whether the drainage pump is blocked in the current direction is determined according to the operation parameters of the motor in real time in the operation process of the motor, the motor is controlled to be switched to operate in the reverse direction when the blockage is determined, the phenomenon that the drainage pump continues to operate according to the direction when the drainage pump is blocked in a certain direction is avoided, high drainage efficiency can be ensured under the condition that the drainage pump is blocked in a single direction, the temperature of the motor cannot rise, the drainage pump is prevented from generating large noise, and the resource waste under the condition that the drainage pump is blocked in the single direction is reduced. And under the condition of one-way blockage of the drainage pump, the motor is controlled to run in the reverse direction, so that sundries wound on the impeller of the drainage pump can be removed, and the one-way blockage of the drainage pump is facilitated to be dredged.
An embodiment of the present invention further provides a drain pump control apparatus for performing the drain pump control method according to any one of the above embodiments, as shown in fig. 3, the apparatus including:
the rotation direction control module 301 is used for controlling the motor of the drainage pump to change the rotation direction every other first preset time;
the parameter acquisition module 302 is used for acquiring motor operation parameters in the motor rotation process in real time;
a blockage determining module 303, configured to determine whether the drain pump is blocked in a first direction according to a current motor operating parameter, where the first direction is a current rotation direction; the motor is controlled to rotate in a second direction opposite to the first direction in response to the drain pump being clogged in the first direction.
The rotation direction control module 301 is further configured to determine that a time length of the motor rotating in the second direction reaches a second preset time length, where the second preset time length is greater than or equal to the first preset time length; controlling the motor to rotate according to a first direction;
a blockage determining module 303, further configured to determine that the drain pump is no longer blocked in the first direction, and control the motor of the drain pump to change the rotation direction by the rotation direction control module every first preset time period; and controlling the motor to rotate according to the second direction when the drainage pump is determined to be blocked in the first direction.
The rotation direction control module 301 is further configured to control the motor to rotate in the second direction for a first preset time period according to that the drainage pump is not blocked in the first direction and the first preset time period is reached.
A blockage determining module 303, further configured to determine whether the drain pump is blocked in the second direction according to an operation parameter of the motor during the rotation of the motor in the second direction; the rotation direction control module 301 is further configured to control the motor to rotate in the first direction according to the blockage of the drain pump in the second direction.
The device also includes: the alarm module is used for determining that the continuous times of detecting the blockage of the drainage pump in the first direction and the second direction are greater than or equal to the preset times; and controlling the motor to stop, and sending prompt information for prompting the blockage of the drainage pump.
A blockage determining module 303, configured to determine that the drain pump is blocked in the first direction according to that a phase current included in the current motor operation parameter is greater than a preset current threshold; or determining that the drainage pump is blocked in the first direction according to the fact that the running power included in the current motor running parameters is larger than a preset power threshold; or determining that the drainage pump is blocked in the first direction according to the condition that the rotating speed included in the current motor operating parameters is less than a preset rotating speed threshold; alternatively, it is determined that the drain pump is clogged in the first direction based on the current motor operating parameter including a torque greater than a preset torque threshold.
The drain pump control device provided by the above embodiment of the present application and the drain pump control method provided by the embodiment of the present application have the same beneficial effects as the method adopted, operated or realized by the stored application program.
The embodiment of the application also provides household electrical appliance equipment to execute the upper drainage pump control method, wherein the household electrical appliance equipment is provided with a drainage pump, and the household electrical appliance equipment can be a washing machine, a dish washing machine or an air conditioner and the like. Referring to fig. 4, a schematic diagram of a home device according to some embodiments of the present application is shown. As shown in fig. 4, the home appliance 4 includes: a processor 400, a memory 401, a bus 402 and a communication interface 403, wherein the processor 400, the communication interface 403 and the memory 401 are connected through the bus 402; the memory 401 stores a computer program that can be executed on the processor 400, and the processor 400 executes the computer program to execute the drain pump control method according to any of the foregoing embodiments.
The Memory 401 may include a high-speed Random Access Memory (RAM) and may further include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. The communication connection between the network element of the system and at least one other network element is realized through at least one communication interface 403 (which may be wired or wireless), and the internet, a wide area network, a local network, a metropolitan area network, and the like can be used.
Bus 402 can be an ISA bus, PCI bus, EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. The memory 401 is used for storing a program, and the processor 400 executes the program after receiving an execution instruction, and the drain pump control method disclosed in any of the embodiments of the present application may be applied to the processor 400, or implemented by the processor 400.
Processor 400 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 400. The Processor 400 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 401, and the processor 400 reads the information in the memory 401 and completes the steps of the method in combination with the hardware.
The household appliance and the drainage pump control method provided by the embodiment of the application are based on the same inventive concept, and have the same beneficial effects as the adopted, operated or realized method.
Referring to fig. 5, the computer readable storage medium is an optical disc 30, on which a computer program (i.e., a program product) is stored, and when the computer program is executed by a processor, the computer program executes the drain pump control method according to any of the embodiments.
It should be noted that examples of the computer-readable storage medium may also include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory, or other optical and magnetic storage media, which are not described in detail herein.
The computer-readable storage medium provided by the above-mentioned embodiments of the present application and the drainage pump control method provided by the embodiments of the present application have the same beneficial effects as the method adopted, operated or implemented by the application program stored in the computer-readable storage medium.
It should be noted that:
in the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the application, various features of the application are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the application and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted to reflect the following schematic diagram: this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this application.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A drain pump control method, comprising:
controlling a motor of the drainage pump to change the rotation direction every other first preset time;
collecting motor operation parameters in the motor rotation process in real time;
determining whether the drainage pump is blocked in a first direction according to current motor operation parameters, wherein the first direction is a current rotation direction;
controlling the motor to rotate in a second direction opposite the first direction in response to the drain pump being clogged in the first direction.
2. The method of claim 1, wherein after controlling the motor to rotate in the second direction, further comprising:
determining that the time length of the motor rotating according to the second direction reaches a second preset time length, wherein the second preset time length is greater than or equal to the first preset time length;
controlling the motor to rotate according to the first direction;
determining that the drainage pump is no longer blocked in the first direction, and performing the operation of controlling the motor of the drainage pump to change the rotation direction every first preset time;
determining that the drain pump is still clogged in the first direction, and performing the operation of controlling the motor to rotate in a second direction.
3. The method of claim 1, further comprising:
and controlling the motor to rotate for the first preset time according to a second direction according to the condition that the drainage pump is not blocked in the first direction and the first preset time is reached.
4. The method according to any one of claims 1-3, further comprising:
determining whether the drain pump is blocked in the second direction according to motor operation parameters in the process that the motor rotates in the second direction;
controlling the motor to rotate in the first direction in response to the drain pump being clogged in the second direction.
5. The method of claim 4, further comprising:
determining that a number of consecutive times that clogging of the drain pump is detected in both the first direction and the second direction is greater than or equal to a preset number of times;
and controlling the motor to stop, and sending prompt information for prompting the blockage of the drainage pump.
6. The method of any of claims 1-3, wherein determining whether the drain pump is clogged in the first direction based on current motor operating parameters comprises:
determining that the drainage pump is blocked in a first direction according to the fact that the current motor operation parameters comprise a phase current which is greater than a preset current threshold; alternatively, the first and second electrodes may be,
determining that the drainage pump is blocked in a first direction according to the fact that the current running power included in the running parameters of the motor is larger than a preset power threshold; alternatively, the first and second electrodes may be,
determining that the drainage pump is blocked in a first direction according to the condition that the rotation speed included in the current motor operation parameters is less than a preset rotation speed threshold; alternatively, the first and second electrodes may be,
determining that the drain pump is clogged in the first direction based on a torque included in the current motor operating parameter being greater than a preset torque threshold.
7. A drain pump control apparatus, comprising:
the rotation direction control module is used for controlling the motor of the drainage pump to change the rotation direction every other first preset time;
the parameter acquisition module is used for acquiring motor operation parameters in the motor rotation process in real time;
the blockage determining module is used for determining whether the drainage pump is blocked in a first direction according to the current motor operation parameters, wherein the first direction is the current rotation direction; controlling the motor to rotate in a second direction opposite the first direction in response to the drain pump being clogged in the first direction.
8. The apparatus of claim 7,
the rotation direction control module is further configured to determine that a time length of rotation of the motor according to a second direction reaches a second preset time length, and the second preset time length is greater than or equal to the first preset time length; controlling the motor to rotate according to the first direction;
the blockage determining module is further used for determining that the drainage pump is not blocked in the first direction any more, and controlling a motor of the drainage pump to change the rotation direction by the rotation direction control module every other first preset time; determining that the sump pump is still clogged in the first direction, and controlling the motor to rotate in a second direction.
9. An appliance comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the computer program to implement the method of any one of claims 1 to 6.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the program is executed by a processor to implement the method according to any of claims 1-6.
CN202011196586.5A 2020-10-30 2020-10-30 Drainage pump control method, device, equipment and storage medium Pending CN114531073A (en)

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PCT/CN2021/117238 WO2022089023A1 (en) 2020-10-30 2021-09-08 Method and apparatus for controlling drainage pump, device, and storage medium

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CN117458954B (en) * 2023-12-21 2024-03-08 珠海格力电器股份有限公司 Motor protection control method and device, fan and air conditioner

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