WO2024000968A1

WO2024000968A1 - Clothing treatment device, and water pump control method and water pump control device therefor

Info

Publication number: WO2024000968A1
Application number: PCT/CN2022/128704
Authority: WO
Inventors: 姜晓宇; 陈林
Original assignee: 无锡小天鹅电器有限公司
Priority date: 2022-06-30
Filing date: 2022-10-31
Publication date: 2024-01-04
Also published as: CN115045081A

Abstract

A clothing treatment device, and a water pump control method and a water pump control device therefor. The method comprises: in the process of controlling a water pump to rotate in a first direction to perform a drainage operation, detecting whether the water pump is blocked by foreign matter (S1); if it is detected that the water pump is blocked by foreign matter, acquiring an operating power of the water pump (S2); and controlling the water pump to operate at a limited power according to the operating power (S3).

Description

Clothes treatment device, water pump control method and water pump control device thereof

Cross-references to related applications

This disclosure claims priority to the Chinese patent application with application number 202210771268. This disclosure is ongoing.

Technical field

The present disclosure relates to the technical field of household appliances, and in particular to a water pump control method for a clothes treatment device, a computer-readable storage medium, a clothes treatment device and a water pump control device for the clothes treatment device.

Background technique

At present, most drum washing machine drainage pumps are AC water pumps, which can only control the water pump to rotate forward. When a foreign object blocks the water pump impeller, the water pump status cannot be detected, and the water pump drainage is abnormal, resulting in damage to the water pump.

public content

The present disclosure aims to solve one of the technical problems in the related art, at least to a certain extent. To this end, the first object of the present disclosure is to provide a water pump control method for a clothes treatment device, which limits the power of the water pump when the water pump is blocked by foreign matter, thereby protecting the water pump.

A second object of the present disclosure is to provide a computer-readable storage medium.

A third object of the present disclosure is to provide a laundry treatment device.

A fourth object of the present disclosure is to provide a water pump control device for a laundry treatment device.

In order to achieve the above object, the first embodiment of the present disclosure proposes a water pump control method for a clothes treatment device, including: during the process of controlling the water pump to rotate in the first direction for drainage, identifying whether the water pump is in a foreign matter blocked state; identifying that the water pump is blocked by foreign matter; In the state of foreign matter blockage, obtain the operating power of the water pump; control the water pump to operate with limited power based on the operating power.

According to the water pump control method of the clothes processing device according to the embodiment of the present disclosure, first, in the process of controlling the water pump to rotate in the first direction for drainage, it is identified whether the water pump is in a foreign matter blocked state, and when it is recognized that the water pump is in a foreign matter blocked state, the water pump is obtained The operating power of the water pump is then controlled to limit the power operation of the water pump according to the operating power. Therefore, this method limits the power of the water pump when the water pump is blocked by foreign matter, thereby protecting the water pump.

In addition, the water pump control method of the clothes treatment device according to the above embodiments of the present disclosure may also have the following additional technical features:

According to an embodiment of the present disclosure, controlling the power-limited operation of the water pump according to the operating power includes: if the operating power is less than or equal to the preset power threshold, controlling the rotation speed of the water pump to remain unchanged; if the operating power is greater than the preset power threshold, reducing the speed of the water pump. speed, and adjust the operating power of the water pump to the preset power threshold.

According to an embodiment of the present disclosure, identifying whether the water pump is blocked by foreign matter includes: obtaining the operating current of the water pump; if the operating current is less than a preset current threshold, or the operating current is greater than or equal to the preset current threshold and the duration is less than the first preset time, it is determined that the water pump is not blocked by foreign matter; if the operating current is greater than or equal to the preset current threshold and the duration is greater than or equal to the first preset time, it is determined that the water pump is blocked by foreign matter.

According to one embodiment of the present disclosure, after identifying that the water pump is in a foreign matter blocked state, the water pump control method of the clothes treatment device further includes: controlling the water pump to rotate in a second direction to discharge the foreign matter, wherein the second direction is opposite to the first direction. ; If the foreign matter cannot be discharged, perform the step of obtaining the operating power of the water pump; if the foreign matter has been discharged, control the water pump to rotate in the first direction to continue draining.

According to an embodiment of the present disclosure, controlling the water pump to rotate in the second direction to discharge the foreign matter includes: controlling the water pump to alternately rotate in the second direction and the first direction to discharge the foreign matter.

According to an embodiment of the present disclosure, controlling the water pump to alternately rotate in the second direction and the first direction to discharge the foreign matter includes: first controlling the water pump to rotate in the second direction for a second preset time, and then controlling the water pump to rotate in the first direction. Rotate, and obtain the operating current of the water pump and the number of times the water pump rotates in the second direction; if the operating current is greater than or equal to the preset current threshold and the number of times is less than the preset number of times, control the water pump to rotate in the second direction again and continue for the second preset time. time; if the operating current is greater than or equal to the preset current threshold and the number of times is greater than or equal to the preset number of times, it is determined that the foreign matter cannot be discharged; if the operating current is less than the preset current threshold, it is determined that the foreign matter has been discharged.

According to one embodiment of the present disclosure, the water pump is a DC water pump, and the frequency converter used to drive the water pump to rotate is integrated with the frequency converter used to drive the main motor in the laundry treatment device.

In order to achieve the above object, a second embodiment of the present disclosure proposes a computer-readable storage medium on which a water pump control program of a clothes treatment device is stored. When the water pump control program of the clothes treatment device is executed by a processor, the above mentioned Water pump control method for laundry treatment apparatus.

According to the computer-readable storage medium of the embodiment of the present disclosure, based on the above-mentioned water pump control method of the clothes processing device, when the water pump is blocked by foreign matter, the water pump power is limited, thereby playing a role in protecting the water pump.

In order to achieve the above object, a third embodiment of the present disclosure proposes a clothes treatment device, including: a memory, a processor, and a water pump control program of the clothes treatment device stored in the memory and executable on the processor. The processor executes During the program, the above-mentioned water pump control method of the clothes treatment device is implemented.

According to the clothes processing device of the embodiment of the present disclosure, based on the above-mentioned water pump control method of the clothes processing device, when the water pump is blocked by foreign matter, the water pump power is limited, thereby playing a role in protecting the water pump.

In order to achieve the above object, a fourth embodiment of the present disclosure proposes a water pump control device for a clothes treatment device, including: an identification module for identifying whether the water pump is in the presence of foreign objects during the process of controlling the water pump to rotate in a first direction for drainage. Blockage status; the acquisition module is used to obtain the operating power of the water pump when it is recognized that the water pump is blocked by foreign matter; the control module is used to control the limited power operation of the water pump based on the operating power.

According to the water pump control device of the clothes processing device according to the embodiment of the present disclosure, the identification module identifies whether the water pump is in a foreign matter blocked state during the process of controlling the water pump to rotate in the first direction for drainage, and the acquisition module identifies that the water pump is in a foreign matter blocked state. When, the operating power of the water pump is obtained, and the control module controls the water pump to operate with limited power based on the operating power. Therefore, when the water pump is blocked by foreign matter, the device limits the power of the water pump, thereby protecting the water pump.

Additional aspects and advantages of the disclosure 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 disclosure.

Description of drawings

Figure 1 is a flow chart of a water pump control method of a laundry treatment device according to an embodiment of the present disclosure;

Figure 2 is a flow chart of a water pump control method of a laundry treatment device according to a specific embodiment of the present disclosure;

Figure 3 is a block schematic diagram of a laundry treatment device according to an embodiment of the present disclosure;

4 is a block diagram of a water pump control device of a laundry treatment device according to an embodiment of the present disclosure.

Detailed ways

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present disclosure and are not to be construed as limitations of the present disclosure.

The following describes a water pump control method for a clothes treatment device, a computer-readable storage medium, a clothes treatment device, and a water pump control device for a clothes treatment device proposed by embodiments of the present disclosure with reference to the accompanying drawings.

FIG. 1 is a flowchart of a water pump control method of a laundry treatment device according to an embodiment of the present disclosure. The following description takes the clothes processing equipment as a drum washing machine as an example.

As shown in Figure 1, the water pump control method of the laundry treatment device according to the embodiment of the present disclosure may include:

S1, during the process of controlling the water pump to rotate in the first direction for drainage, identify whether the water pump is blocked by foreign matter;

S2, recognize that the water pump is blocked by foreign matter and obtain the operating power of the water pump;

S3, control the water pump to operate with limited power according to the operating power.

Specifically, when the drum washing machine receives the drainage command, the water pump is controlled to rotate unidirectionally in the first direction to execute the washing machine drainage process. As the washing machine drains, the water pump cavity is filled with discharged sewage. Since there are many impurities in the water, including foreign matter, It is easy to stay in the water pump cavity when the impeller is started and rotates in one direction, thereby interfering with the rotation of the impeller, causing the load of the water pump to increase, the operating power to increase, and easily causing damage to the water pump motor. Therefore, during the drainage process of the washing machine, the current status of the water pump is monitored in real time through the frequency converter connected to the water pump motor. When it is determined that the running power of the water pump is abnormal and it is determined that the water pump is blocked by foreign matter, the input voltage of the water pump motor is lowered through the frequency converter. Or input current to reduce the operating power of the water pump to limit the power of the water pump, thereby protecting the water pump. It can be understood that the water pump operating power threshold can be set in advance. After it is determined that the water pump operating power exceeds the water pump operating power threshold, the water pump operating power is adjusted to be lower than the water pump operating power threshold.

It should be noted that the identification of the above-mentioned water pump being blocked by foreign matter can be determined by directly detecting the operating power of the water pump through a power meter, or by detecting the input current of the motor in real time.

In one embodiment of the present disclosure, controlling the power-limited operation of the water pump according to the operating power includes: if the operating power is less than or equal to the preset power threshold, controlling the rotation speed of the water pump to remain unchanged; if the operating power is greater than the preset power threshold, reducing the speed of the water pump. speed, and adjust the operating power of the water pump to the preset power threshold. Among them, the preset power threshold can be set according to the actual situation.

Specifically, the operating power P during the drainage process of the water pump rotating in the first direction is obtained, and the operating power P is compared with the preset power threshold P _MAX . If P ≤ P _MAX , the water pump is controlled to maintain the current rotation speed for drainage. If P>P _MAX , the frequency converter reduces the frequency of the input voltage of the water pump motor, thereby reducing the average voltage converted and output by the frequency converter to the water pump motor, the speed of the water pump motor decreases, and the operating power of the water pump also decreases. When the operating power of the water pump is reduced to the preset power threshold P _MAX , the frequency adjustment of the inverter's output voltage is stopped and the current operating speed of the water pump is maintained to perform drainage of the washing machine. That is to say, when P > P _MAX , by reducing The water pump rotates in the first direction to reduce the operating power of the water pump, and controls the operating power of the water pump to maintain the preset power threshold P _MAX to perform the drainage process.

In one embodiment of the present disclosure, identifying whether the water pump is blocked by foreign matter includes: obtaining the operating current of the water pump; if the operating current is less than the preset current threshold, or the operating current is greater than or equal to the preset current threshold and the duration is less than the first preset If the time is set, it is determined that the water pump is not blocked by foreign matter; if the operating current is greater than or equal to the preset current threshold and the duration is greater than or equal to the first preset time, it is determined that the water pump is blocked by foreign matter. Among them, the preset current threshold and the first preset time can be set according to actual conditions.

Specifically, this method uses the operating current of the water pump to identify whether foreign matter blocking occurs. When the water pump runs in the first direction and performs drainage work, the phase current output from the frequency converter to the water pump is obtained through the current acquisition module, which is used as the operating current I of the water pump, and the operating current I is compared with the preset current threshold I _MAX . . If I<I _MAX , it is judged that the water pump is operating normally and no foreign matter is blocked, and the water pump is controlled to continue the drainage operation in the first direction according to the preset drainage program. If I≥I _MAX , start timing, control the water pump to continue draining water in the first direction, and sample the operating current I of the water pump according to the preset sampling period, and compare it with I _MAX . If at the first preset time If I<I _MAX appears within T1, the timer ends, it is determined that the water pump has not been blocked by foreign matter, and the water pump is controlled to continue draining in the first direction according to the preset drainage program. If I<I _MAX does not occur within the first preset time T1, it is determined that the water pump is blocked by foreign matter, and the operating power of the water pump is adjusted according to the current operating power of the water pump to perform power-limited operation.

In one embodiment of the present disclosure, after identifying that the water pump is blocked by foreign matter, the method further includes: controlling the water pump to rotate in a second direction to discharge the foreign matter, where the second direction is opposite to the first direction; if the foreign matter cannot be discharged , then perform the step of obtaining the operating power of the water pump; if the foreign matter has been discharged, control the water pump to rotate in the first direction to continue draining.

That is to say, when it is recognized that a foreign matter is clogged in the water pump, the operating state of the water pump is controlled by the frequency converter to switch from forward rotation in the first direction to reverse rotation in the second direction, and the foreign matter is discharged by relying on the turbulence effect of the reversed fluid in the water pump chamber. . After the water pump switches to reverse rotation, the operating current I of the water pump is collected through the current detection module, and the collected operating current I is compared with the preset current threshold I _MAX . When I < I _MAX occurs, indicate When the foreign matter is discharged, the water pump is controlled to return to the operation in the first direction from the second direction, and the drainage work is continued. If the water pump runs reversely in the second direction for a certain period of time, and I is still greater than or equal to I _MAX , it is confirmed that the foreign matter in the water pump cannot be discharged, and the water pump is restored to drainage along the first direction, and the current operating power of the water pump is obtained. According to the current operation Power control water pump runs with limited power. The above-mentioned reversal operation in the second direction when the water pump is blocked by foreign matter avoids the continuous entanglement of foreign matter when the water pump has been running in the first direction in a single phase, thereby causing abnormal drainage and damage to the water pump.

It should be noted that, in addition to the above-mentioned method of judging whether foreign matter is discharged, when the motor runs in the second direction for a preset time and returns to the first direction, the operating current I of the motor when running in the first direction and the preset time can also be used. Set the current threshold I _MAX for comparison to determine whether the foreign matter discharge is completed.

In one embodiment of the present disclosure, controlling the water pump to rotate in the second direction to discharge the foreign matter includes: controlling the water pump to alternately rotate in the second direction and the first direction to discharge the foreign matter.

That is to say, when it is recognized that a foreign matter is blocked in the water pump, the running direction of the water pump is first controlled to switch from the first direction to the second direction, and then returns to the first direction after running in the second direction for a certain period of time, and then controls the running direction in the first direction. After the preset time, the water pump is controlled to run reversely in the second direction again. Therefore, the water pump is controlled to perform multiple reverse-forward rotation alternating processes, and the foreign matter is discharged by controlling the turbulence effect generated by the forward and reverse rotation of the water pump. . At the same time, during the above-mentioned alternating forward and reverse operation process, the operating current I of the water pump can be detected in real time to determine the discharge status of foreign matter in the water pump.

When it is determined that the foreign matter is discharged, that is, the water pump is not blocked by foreign matter, the water pump is controlled to continue running in the first direction to perform drainage work. However, if the water pump is still blocked by foreign matter after alternating forward and reverse rotation for a preset time, the water pump will perform power-limited operation according to the operating power of the water pump.

In one embodiment of the present disclosure, controlling the water pump to alternately rotate in the second direction and the first direction to discharge the foreign matter includes: first controlling the water pump to rotate in the second direction for a second preset time, and then controlling the water pump to rotate in the first direction. direction of rotation, and obtain the operating current of the water pump and the number of times the water pump rotates in the second direction; if the operating current is greater than or equal to the preset current threshold and the number of times is less than the preset number, then the water pump is controlled to rotate in the second direction again and continues for the second preset time. Set the time; if the operating current is greater than or equal to the preset current threshold and the number of times is greater than or equal to the preset number of times, it is determined that the foreign matter cannot be discharged; if the operating current is less than the preset current threshold, it is determined that the foreign matter has been discharged. Among them, the second preset time and preset times can be set according to the actual situation.

Specifically, taking the first direction as forward and the second direction as reverse as an example, when the water pump is blocked by foreign matter, the water pump is first controlled to reverse for the second preset time T2, and then the water pump is controlled to resume forward rotation for drainage. The operating current I of the water pump is obtained through the current detection module, and the operating current I is compared with the preset current threshold I _MAX . If the phase current I of the water pump continues to be greater than or equal to I _MAX within the first preset time T1, it is determined that the water pump is still running. In the state of foreign matter blockage, control the water pump to run in reverse again, and control the water pump to resume forward rotation after the second preset time T2 of reverse rotation. Continue to obtain the operating current I of the water pump and compare it with I _MAX . When the water pump phase current When I continues to be greater than or equal to I _MAX within the first preset time T1, it is judged that the foreign matter in the water pump has not been discharged, add one to the number n of I ≥ I _MAX , and compare it with the preset number N, if n < N , then repeat the above alternating control of reverse and forward rotation. If n ≥ N, it is determined that the foreign matter cannot be discharged, and the water pump is controlled to operate at a limited power. When it is judged that the running current of the water pump I<I _MAX , or the time for I≥I _MAX is less than T1, it is determined that the foreign matter in the water pump has been discharged, and the water pump is controlled to perform forward drainage according to the preset program. That is to say, the number of alternating forward and reverse operations of the water pump is limited by the preset number N. When the number n of I≥I _MAX reaches the preset number N, it is judged that the water pump cannot discharge foreign matter through alternating forward and reverse operations, and it is determined The water pump is blocked by foreign matter.

In one embodiment of the present disclosure, the water pump is a DC water pump, and the frequency converter used to drive the water pump to rotate is integrated with the frequency converter used to drive the main motor in the laundry treatment device.

Specifically, the water pump of the drum washing machine uses a DC water pump. The frequency converter of the main motor of the drum washing machine integrates the variable frequency drive of the DC water pump to perform the main BLDC (Brushless Direct Current Motor) motor variable frequency drive and the water pump variable frequency drive. Integrated design realizes the dual drive function of the inverter and motor. At this time, an MCU (Microcontroller Unit) can control the main BLDC motor and DC water pump of the drum washing machine at the same time, realizing the function of one inverter driving two motors. At this time, the frequency converter can be used to control the forward and reverse rotation of the water pump, control the operating speed of the water pump, and detect the operating current, speed, power, etc. of the water pump to achieve controllable status of the water pump. Some detection and processing of abnormal conditions of the water pump can be carried out. to reduce the risk of failure to drain.

As a specific embodiment of the present disclosure, taking the first direction as the forward direction and the second direction as the reverse direction as an example, as shown in Figure 2, the water pump control method of the clothes treatment device may include the following steps:

S101, control the water pump to rotate forward for drainage.

S102, obtain the running current I of the water pump.

S103, determine that the operating current I of the water pump is greater than or equal to the preset current threshold I _MAX , and the maintenance time t is greater than or equal to the first preset time T1. If yes, execute step S105; if not, execute step S104.

S104, control the water pump to rotate in the first direction to continue drainage.

S105, control the water pump to reverse T2 time.

S106, control the water pump to resume forward rotation for drainage. Execute step S102 and step S107.

S107: Determine that the cumulative number of times the operating current I of the water pump is greater than or equal to the preset current threshold I _MAX is greater than or equal to the preset number of times.

S108, obtain the operating power P of the water pump.

S109: Determine whether the operating power P is greater than the preset power threshold P _MAX . If yes, execute step S110; if not, execute step S111.

S110, reduce the speed of the water pump and adjust the operating power of the water pump to the preset power threshold.

S111, the water pump maintains the current speed.

In summary, according to the water pump control method of the clothes treatment device according to the embodiment of the present disclosure, first, during the process of controlling the water pump to rotate in the first direction for drainage, it is recognized whether the water pump is in a foreign matter blocked state, and when it is recognized that the water pump is in a foreign matter blocked state, , obtain the operating power of the water pump, and then control the water pump to operate at a limited power limit based on the operating power. This method limits the power of the water pump when foreign matter blocks the water pump, thereby protecting the water pump.

Corresponding to the above embodiments, the present disclosure also provides a computer-readable storage medium.

The computer-readable storage medium according to the embodiment of the present disclosure stores a water pump control program for the clothes treatment device on it. When the water pump control program for the clothes treatment device is executed by the processor, the above-mentioned water pump control method for the clothes treatment device is implemented.

Corresponding to the above embodiments, the present disclosure also provides a clothes processing device.

As shown in FIG. 3 , the laundry treatment device 100 according to the embodiment of the present disclosure includes: a memory 110 , a processor 120 , and a water pump control program of the laundry treatment device stored in the memory 110 and executable on the processor 120 . The processor 120 executes During the program, the above-mentioned water pump control method of the clothes treatment device is implemented.

For example, the processor 120 may be configured to execute the above method embodiments according to instructions in the computer program.

In some embodiments of the present application, the processor 120 may include but is not limited to:

General processor, Digital Signal Processor (DSP), Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates Or transistor logic devices, discrete hardware components, etc.

In some embodiments of the present application, the memory 110 includes but is not limited to:

Volatile memory and/or non-volatile memory. Among them, non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which is used as an external cache. By way of illustration, but not limitation, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM).

In some embodiments of the present application, the computer program can be divided into one or more modules, and the one or more modules are stored in the memory 110 and executed by the processor 120 to complete the tasks provided by the present application. method. The one or more modules may be a series of computer program instruction segments capable of completing specific functions. The instruction segments are used to describe the execution process of the computer program in the home appliance 100 .

As shown in Figure 3, the home appliance 100 may also include:

Transceiver 130 , the transceiver 130 may be connected to the processor 120 or the memory 110 .

The processor 120 can control the transceiver 130 to communicate with other devices. Specifically, it can send information or data to other devices, or receive information or data sent by other devices. Transceiver 130 may include a transmitter and a receiver. The transceiver 130 may further include an antenna, and the number of antennas may be one or more.

It should be understood that various components of the home appliance 100 are connected through a bus system, where in addition to the data bus, the bus system also includes a power bus, a control bus and a status signal bus.

Corresponding to the above embodiments, the present disclosure also proposes a water pump control device for a clothes treatment device.

As shown in FIG. 4 , the water pump control device of the laundry treatment device according to the embodiment of the present disclosure may include: an identification module 10 , an acquisition module 20 and a control module 30 .

The identification module 10 is used to identify whether the water pump is blocked by foreign matter during the process of controlling the water pump to rotate in the first direction for drainage. The acquisition module 20 is used to acquire the operating power of the water pump when it is recognized that the water pump is blocked by foreign matter. The control module 30 is used to control the power-limited operation of the water pump according to the operating power.

In one embodiment of the present disclosure, the control module 30 controls the power-limited operation of the water pump according to the operating power, and is specifically used to: if the operating power is less than or equal to the preset power threshold, control the rotational speed of the water pump to remain unchanged; if the operating power is greater than the preset power threshold, then reduce the speed of the water pump and adjust the operating power of the water pump to the preset power threshold.

In one embodiment of the present disclosure, the identification module 10 identifies whether the water pump is blocked by foreign matter, and is specifically used to: obtain the operating current of the water pump; if the operating current is less than the preset current threshold, or the operating current is greater than or equal to the preset current threshold and continues If the time is less than the first preset time, it is determined that the water pump is not blocked by foreign matter; if the operating current is greater than or equal to the preset current threshold and the duration is greater than or equal to the first preset time, it is determined that the water pump is blocked by foreign matter.

In one embodiment of the present disclosure, after recognizing that the water pump is blocked by foreign matter, the control module 30 is also configured to: control the water pump to rotate in a second direction to discharge the foreign matter, where the second direction is opposite to the first direction; if If the foreign matter cannot be discharged, the step of obtaining the operating power of the water pump is performed; if the foreign matter has been discharged, the water pump is controlled to rotate in the first direction to continue draining.

In one embodiment of the present disclosure, the control module 30 controls the water pump to rotate in the second direction to discharge the foreign matter, and is specifically used to: control the water pump to alternately rotate in the second direction and the first direction to discharge the foreign matter.

In one embodiment of the present disclosure, the control module 30 controls the water pump to alternately rotate in the second direction and the first direction to discharge the foreign matter. Specifically, it is used to: first control the water pump to rotate in the second direction for a second preset time, and then Control the water pump to rotate in the first direction, and obtain the operating current of the water pump and the number of times the water pump rotates in the second direction; if the operating current is greater than or equal to the preset current threshold and the number of times is less than the preset number, then control the water pump to rotate in the second direction again. and lasts for the second preset time; if the operating current is greater than or equal to the preset current threshold and the number of times is greater than or equal to the preset number of times, it is determined that the foreign matter cannot be discharged; if the operating current is less than the preset current threshold, it is determined that the foreign matter has been discharged.

It should be noted that for details not disclosed in the water pump control device of the clothes treatment device in the embodiment of the present disclosure, please refer to the details disclosed in the water pump control method of the clothes treatment device in the above embodiments of the present disclosure, which will not be described again here.

According to the water pump control device of the clothes processing device according to the embodiment of the present disclosure, the identification module identifies whether the water pump is in a foreign matter blocked state during the process of controlling the water pump to rotate in the first direction for drainage, and the acquisition module identifies that the water pump is in a foreign matter blocked state. When, the operating power of the water pump is obtained, and the control module controls the water pump to operate at limited power based on the operating power. This device limits the power of the water pump when foreign matter blocks the water pump, thereby protecting the water pump.

It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, for example, may be considered to be a sequenced list of executable instructions for implementing logical functions, which may be embodied in any computer. in a readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other system that can retrieve and execute instructions from the instruction execution system, apparatus, or device) Used by instruction execution systems, devices or equipment. For the purposes of this specification, a "computer-readable medium" may be any device that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer readable media include the following: electrical connections with one or more wires (electronic device), portable computer disk cartridges (magnetic device), random access memory (RAM), Read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium may even be paper or other suitable medium on which the program may be printed, as the paper or other medium may be optically scanned, for example, and subsequently edited, interpreted, or otherwise suitable as necessary. process to obtain the program electronically and then store it in computer memory.

It should be understood that various parts of the present disclosure may be implemented in hardware, software, firmware, or combinations thereof. In the above-described embodiments, various steps or methods may be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if it is implemented in hardware, as in another embodiment, it can be implemented by any one or a combination of the following technologies known in the art: a logic gate circuit with a logic gate circuit for implementing a logic function on a data signal. Discrete logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), etc.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "an example," "specific examples," or "some examples" or the like means that specific features are described in connection with the embodiment or example. , structures, materials, or features are included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

In this disclosure, unless otherwise explicitly stated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated into one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interactive relationship between two elements, unless otherwise specified limitations. For those of ordinary skill in the art, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above-mentioned embodiments are illustrative and should not be construed as limitations of the present disclosure. Those of ordinary skill in the art can make modifications to the above-mentioned embodiments within the scope of the present disclosure. The embodiments are subject to changes, modifications, substitutions and variations.

Claims

A water pump control method for a laundry treatment device, the method comprising:

During the process of controlling the water pump to rotate in the first direction for drainage, identify whether the water pump is blocked by foreign matter;

Recognize that the water pump is blocked by foreign matter and obtain the operating power of the water pump;

The water pump is controlled to operate with limited power according to the operating power.
The method according to claim 1, wherein controlling the power-limited operation of the water pump according to the operating power includes:

If the operating power is less than or equal to the preset power threshold, the speed of the water pump is controlled to remain unchanged;

If the operating power is greater than the preset power threshold, the rotation speed of the water pump is reduced, and the operating power of the water pump is adjusted to the preset power threshold.
The method according to claim 1, wherein identifying whether the water pump is blocked by foreign matter includes:

Obtain the operating current of the water pump;

If the operating current is less than the preset current threshold, or the operating current is greater than or equal to the preset current threshold and the duration is less than the first preset time, it is determined that the water pump is not blocked by foreign matter;

If the operating current is greater than or equal to the preset current threshold and the duration is greater than or equal to the first preset time, it is determined that the water pump is in a foreign matter blocked state.
The method according to any one of claims 1-3, wherein after identifying that the water pump is in a foreign matter blocked state, the method further includes:

Control the water pump to rotate in a second direction to discharge foreign matter, wherein the second direction is opposite to the first direction;

If the foreign matter cannot be discharged, perform the step of obtaining the operating power of the water pump;

If the foreign matter has been discharged, the water pump is controlled to rotate in the first direction to continue draining.
The method according to claim 4, wherein the controlling the water pump to rotate in the second direction to discharge the foreign matter includes:

The water pump is controlled to alternately rotate in the second direction and the first direction to discharge foreign matter.
The method according to claim 5, wherein the controlling the water pump to alternately rotate in the second direction and the first direction to discharge the foreign matter includes:

First control the water pump to rotate in the second direction for a second preset time, then control the water pump to rotate in the first direction, and obtain the operating current of the water pump and the water pump in the second direction. The number of direction rotations;

If the operating current is greater than or equal to the preset current threshold and the number of times is less than the preset number of times, control the water pump to rotate in the second direction again for a second preset time;

If the operating current is greater than or equal to the preset current threshold and the number of times is greater than or equal to the preset number of times, it is determined that the foreign matter cannot be discharged;

If the operating current is less than the preset current threshold, it is determined that the foreign matter has been discharged.
The method according to any one of claims 1 to 3, wherein the water pump is a DC water pump, and the frequency converter used to drive the rotation of the water pump is integrated with the frequency converter used to drive the main motor in the clothes treatment device. .
A computer-readable storage medium on which is stored a water pump control program for a laundry treatment device. When the water pump control program for the laundry treatment device is executed by a processor, the water pump of the laundry treatment device according to any one of claims 1 to 7 is implemented. Control Method.
A laundry treatment device, including: a memory, a processor, and a water pump control program of the laundry treatment device stored in the memory and executable on the processor. When the processor executes the program, the method according to claim 1 is implemented. - The water pump control method of the laundry treatment device according to any one of -7.
A water pump control device for a laundry treatment device, the device comprising:

An identification module, used to identify whether the water pump is blocked by foreign matter during the process of controlling the water pump to rotate in the first direction for drainage;

An acquisition module, configured to acquire the operating power of the water pump when it is recognized that the water pump is blocked by foreign matter;

A control module configured to control the power-limited operation of the water pump according to the operating power.