Mini washing machine and motor stall detection method and device thereof

Abstract

The present application relates to a kind of mini washing machine and its motor stall detection method, device, the method comprises;Obtain the working program currently executed by mini washing machine;Real-time detection voltage when mini washing machine direct-current brushless water pump works;Whether the voltage detected when mini washing machine direct-current brushless water pump works is greater than the reference voltage corresponding to motor when the working program currently executed by mini washing machine, is then determine that mini washing machine direct-current brushless water pump appears stall, control mini washing machine direct-current brushless water pump reaches target speed.The present application can analyze the current condition of direct-current brushless water pump without signal feedback in mini washing machine, conveniently and accurately determine whether direct-current brushless water pump appears stall, and when determining that motor appears stall, control motor reaches target speed, such as directly closing motor, so as to effectively avoid causing motor and washing machine damage, guarantee motor and washing machine safe and reliable operation.

Description

Technical Field

[0001] The present invention relates to the technical field of washing appliances, and in particular to a mini washing machine and a motor stall detection method and device thereof. Background Art

[0002] Washing machines are essential appliances in modern households, bringing numerous conveniences to people's lives. Currently, most households use large-capacity washing machines, designed to wash the entire family's laundry. However, washing clothes together, such as underwear and baby clothes, poses the risk of cross-contamination. Washing individual or small items of clothing also wastes water and electricity. Consequently, a growing number of users are opting for mini washing machines specifically for these specialized garments.

[0003] Because mini washing machines are relatively small, simple components are used to prevent internal components from taking up too much space for washing clothes. For example, brushless DC water pumps are used as circulation and drainage pumps. However, these brushless DC water pumps do not provide feedback, preventing the washing machine from detecting their true operating conditions. Consequently, if the brushless DC water pump encounters a blockage or other issues during operation, failure to shut down the motor promptly and quickly could damage the motor and the washing machine. Summary of the Invention

[0004] In order to achieve the above-mentioned purpose and other advantages according to the present invention, a first object of the present invention is to provide a method for detecting motor stall of a mini washing machine, comprising the following steps:

[0005] Obtaining the working program currently executed by the mini washing machine;

[0006] Real-time detection of the voltage of the DC brushless water pump of the mini washing machine when it is working;

[0007] Determining whether the detected voltage of the DC brushless water pump of the mini washing machine when it is working is greater than a reference voltage corresponding to the motor of the mini washing machine during the working program currently executed;

[0008] If the detected voltage of the DC brushless water pump during operation is greater than the reference voltage corresponding to the motor in the working program currently executed by the mini washing machine, it is determined that the DC brushless water pump of the mini washing machine is stalled, and the DC brushless water pump of the mini washing machine is controlled to reach a target speed.

[0009] Furthermore, the working procedures currently executed by the mini washing machine include water intake procedure, washing procedure, rinsing procedure and dehydration procedure; wherein,

[0010] When the mini washing machine performs the water filling program and the rinsing program, if the working time of the circulation pump reaches the preset time, it stops working;

[0011] When the mini washing machine executes the dehydration program, if the collected water level data is less than a preset water level, the drainage pump stops working.

[0012] Furthermore, the real-time detection of the voltage of the DC brushless water pump of the mini washing machine when it is working includes the steps of:

[0013] When the mini washing machine executes the water filling program and the rinsing program, the voltage of the mini washing machine circulation pump is detected in real time within the preset time period;

[0014] When the mini washing machine executes the dehydration program, the voltage of the drainage pump when it is working is detected in real time during the process that the water level data continues to decrease to the preset water level.

[0015] Furthermore, the step of determining whether the voltage detected when the DC brushless water pump of the mini washing machine is working is greater than the reference voltage corresponding to the motor of the mini washing machine during the working program currently executed includes the following steps:

[0016] determining whether, when the mini washing machine executes a water filling program, a voltage of the mini washing machine circulation pump when the mini washing machine is operating is greater than a first reference voltage corresponding to the circulation pump when the mini washing machine executes the water filling program;

[0017] determining whether, when the mini washing machine executes a rinsing program, a voltage at which the circulating pump of the mini washing machine operates is greater than a second reference voltage corresponding to the circulating pump of the mini washing machine when the mini washing machine executes the rinsing program;

[0018] It is determined whether, when the mini washing machine executes the dehydration program, a voltage of the drain pump of the mini washing machine when the mini washing machine is operating is greater than a third reference voltage corresponding to the drain pump when the mini washing machine executes the dehydration program.

[0019] Furthermore, when the mini washing machine performs a rinsing program, if the number of pauses of the circulating pump reaches a set number and the total working time reaches a preset time, the mini washing machine stops working.

[0020] Furthermore, the real-time detection of the working voltage of the DC brushless water pump of the mini washing machine further includes the steps of:

[0021] When the mini washing machine performs a rinsing program, the voltage of the mini washing machine's circulating pump is detected in real time during the intermittent working period.

[0022] Furthermore, the method of determining whether the voltage detected when the DC brushless water pump of the mini washing machine is working is greater than the reference voltage corresponding to the motor of the mini washing machine during the working program currently executed includes the following steps:

[0023] It is determined whether the voltage of the circulation pump of the mini washing machine during each intermittent working time when the mini washing machine performs the rinsing program is greater than the reference voltage corresponding to the circulation pump during each intermittent working time when the mini washing machine performs the rinsing program.

[0024] Furthermore, the detection of the operating voltage includes the steps of:

[0025] The motor drive current is collected through the current detection resistor connected to the DC brushless water pump power supply circuit to obtain the sampling voltage;

[0026] Amplifying the sampled voltage through an analog signal to obtain a voltage amplification signal;

[0027] Performing AD sampling on the voltage amplified signal to obtain the voltage of the DC brushless water pump of the mini washing machine when it is working;

[0028] The target rotation speed is 0.

[0029] A second object of the present invention is to provide a mini washing machine motor stall detection device, comprising:

[0030] an acquiring unit, configured to acquire a working program currently being executed by the mini washing machine;

[0031] A detection unit, used for real-time detection of the voltage of the DC brushless water pump of the mini washing machine when it is working;

[0032] The judgment unit is used to judge whether the voltage detected when the DC brushless water pump of the mini washing machine is working is greater than the reference voltage corresponding to the motor of the working program currently executed by the mini washing machine. If so, it is determined that the DC brushless water pump of the mini washing machine is stalled, and the DC brushless water pump of the mini washing machine is controlled to reach a target speed.

[0033] A third object of the present invention is to provide a mini washing machine comprising: a memory having a program code stored thereon; a processor connected to the memory and implementing a method for detecting motor stall in a mini washing machine when the program code is executed by the processor.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The present invention provides a mini washing machine and a motor stall detection method and device thereof. The method and device can analyze the current status of a DC brushless water pump in the mini washing machine without signal feedback, conveniently and accurately determine whether the DC brushless water pump is stalled, and when it is determined that the motor is stalled, control the motor to reach a target speed, such as directly shutting down the motor, thereby effectively avoiding damage to the motor and the washing machine and ensuring the safe and reliable operation of the motor and the washing machine.

[0036] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the following preferred embodiments of the present invention are described in detail with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail by the following embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0038] Figure 1 This is a flow chart of a method for detecting motor stall in a mini washing machine;

[0039] Figure 2 This is the sampling circuit diagram of the brushless DC water pump in Example 1;

[0040] Figure 3 This is a flow chart of a method for detecting a circulating pump stall when the mini washing machine in Example 1 performs a water inlet procedure;

[0041] Figure 4 This is a flow chart of a method for detecting a drain pump stall when the mini washing machine in Example 1 is executing a dehydration cycle;

[0042] Figure 5 This is a functional block diagram of a mini washing machine motor stall detection device;

[0043] Figure 6 This is a functional block diagram of a mini washing machine. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0045] In the subsequent description, suffixes such as "module," "component," or "unit" used to represent elements are only used to facilitate the description of the present invention and have no specific meaning. Therefore, "module," "component," or "unit" can be used interchangeably.

[0046] Example 1

[0047] A method for detecting stalled rotation of a mini washing machine motor, such as Figure 1 As shown, the following steps are included:

[0048] S1. Obtain the working program currently executed by the mini washing machine. Generally, the full washing process sequence of the mini washing machine is water filling program, washing program, dehydration program, rinsing program, and dehydration program. Users can also select different programs to wash clothes at different stages according to actual needs, such as selecting the rinsing program to rinse clothes and the dehydration program to dehydrate clothes.

[0049] S2. Real-time detection of the voltage of the DC brushless water pump of the mini washing machine when it is working; specifically, the detection of the working voltage includes the following steps:

[0050] The motor drive current is collected through the current detection resistor connected to the DC brushless water pump power supply circuit to obtain the sampling voltage;

[0051] The sampled voltage is amplified by an analog signal to obtain a voltage amplification signal;

[0052] The voltage amplified signal is sampled by AD to obtain the voltage of the DC brushless water pump of the mini washing machine when it is working.

[0053] like Figure 2 The following diagram shows a sampling circuit for a brushless DC water pump without a feedback signal. Current sampling is performed through the R4 current detection resistor, converting the motor drive current into a sampled voltage value. Assuming R4's resistance is 0.3Ω and the normal operating current of the brushless DC water pump is I=800mA, the voltage across R4 is 0.3*0.8=0.24V. For a single-chip microcontroller, 0.24V is too low, so the sampled voltage needs to be amplified by an operational amplifier U1.2 and then sampled through the MCU's AD port. In this embodiment, the circuit is a low-end current detection operational amplifier circuit. The circuit design is such that: R7=R8, R5=R6. When the sampling resistor of R4 is output to the MCU after passing through the op amp: Uout=(I*R4)*(R8 / R5). Assuming R8 / R5=10, then Uout=0.24*10=2.4V, meaning that during normal operation, the MCU sampling voltage is 2.4V. This circuit analyzes the current status of brushless DC water pumps (such as drain pumps and circulation pumps) without signal feedback by detecting the operating current of the water pump. Depending on the operating conditions of the washing machine's water circuit at different stages, when the brushless DC water pump is stalled, the current sensing resistor generates different voltages depending on the pump's operating current, thereby determining the pump's current operating status.

[0054] In one embodiment, the working procedures currently executed by the mini washing machine include water filling procedure, washing procedure, rinsing procedure, and dehydration procedure. At present, the spray device of the drum washing machine is generally set on the sealing window gasket, and the number can be set to be multiple.

[0055] In order to make those skilled in the art understand the present invention more clearly, Figure 3As shown, a method for detecting motor stall during water inflow is exemplarily described, which may include the following steps:

[0056] S21, obtaining that the current working program executed by the mini washing machine is the water filling program;

[0057] S22, collecting the motor drive current through a current detection resistor connected to the circulation pump power supply circuit to obtain a sampled voltage;

[0058] S23, amplifying the sampled voltage through an analog signal to obtain a voltage amplification signal;

[0059] S24. Perform AD sampling on the voltage amplified signal to obtain the voltage of the DC brushless water pump of the mini washing machine when it is working.

[0060] When the washing machine executes the water filling cycle, the circulating pump draws water from the bottom of the outer drum and quickly sprays it onto the clothes in the inner drum. This allows the detergent-mixed wash water to be evenly and quickly applied to the clothes, quickly and evenly soaking them. This speeds up the detergent's ability to fully saturate the clothes and significantly reduces pre-wash preparation time. In this embodiment, when the mini washing machine executes the water filling cycle, the circulating pump stops operating if its operating time reaches a preset duration. During this period, the voltage of the circulating pump is monitored in real time.

[0061] When the washing machine performs a rinse cycle, the circulating pump draws water from the bottom of the outer drum and sprays it onto the clothes in the inner drum, ensuring that the wash water is evenly applied to the clothes. This spraying during the rinsing process reduces the machine's workload and saves water and electricity. In this embodiment, when the mini washing machine performs a rinse cycle, the circulating pump stops operating if its operating time reaches a preset duration. During the rinse cycle, the voltage of the mini washing machine's circulating pump is monitored in real time within the preset duration.

[0062] Because the rinsing process is lengthy, intermittent operation can be configured to reduce the workload of the circulating pump. For example, the circulating pump can be set to operate for a time period of t1, then rest for a time period of t2, then resume operation for a time period of t1, and so on. The specific intermittent operation schedule can be configured based on actual needs. In this embodiment, when the mini washing machine is executing the rinse cycle, if the number of intermittent cycles reaches a set number and the total operating duration reaches a preset time period, the circulating pump stops operating. During the intermittent operation period, the voltage of the circulating pump is monitored in real time.

[0063] At present, some drum washing machines adopt the upper drainage method and use a drainage pump to drain water. In order to make people in this field understand the present invention more clearly, Figure 4 As shown, a method for detecting motor stall during drainage is exemplarily described, which may include the following steps:

[0064] S31, obtaining that the current working program executed by the mini washing machine is a dehydration program;

[0065] S32, collecting the motor drive current through a current detection resistor connected to the drain pump power supply circuit to obtain a sampled voltage;

[0066] S33, amplifying the sampled voltage through an analog signal to obtain a voltage amplification signal;

[0067] S34. Perform AD sampling on the voltage amplified signal to obtain the voltage of the DC brushless water pump of the mini washing machine when it is working.

[0068] S37. When the mini washing machine executes the spin cycle, the water level sensor detects the water level in the outer drum. If the detected water level is less than a preset level, S39. The drain pump is controlled to stop. When the mini washing machine executes the spin cycle, the voltage of the drain pump is detected in real time as the water level continuously decreases to the preset level.

[0069] In one embodiment, the mini washing machine's operating program also includes a cleaning program. At the end of a wash cycle, while the washing machine is performing the cleaning program, the circulating pump sprays detergent foam onto areas of the washing machine, such as the window lining and door glass, to reduce residual detergent foam and the likelihood of subsequent bacterial growth, achieving an antibacterial effect. In this embodiment, when the mini washing machine is performing the cleaning program, the circulating pump stops operating if its operating time reaches a preset duration. During the cleaning program, the voltage of the circulating pump is monitored in real time within the preset duration. During the cleaning program, the water level sensor detects the water level in the outer drum. If the collected water level data is less than the preset water level, the drain pump stops operating. During the cleaning program, the voltage of the drain pump is monitored in real time as the water level continues to decrease to the preset level.

[0070] S3. Determine whether the detected voltage of the DC brushless water pump of the mini washing machine when it is working is greater than the reference voltage corresponding to the motor of the mini washing machine when the working program is currently executed.

[0071] S4. If the detected voltage of the brushless DC water pump during operation is greater than the reference voltage corresponding to the motor of the mini washing machine during the current operation program, it is determined that the brushless DC water pump of the mini washing machine is stalled, and the brushless DC water pump of the mini washing machine is controlled to reach a target speed.

[0072] When the washing machine executes the water-injection cycle, the circulation pump speed is set to a first speed, such as 3000 r / min, to ensure that the wash water mixed with detergent is evenly and quickly sprayed onto the clothes, allowing them to be quickly and evenly soaked, accelerating the detergent's penetration into the clothes and shortening the pre-washing preparation time. At this time, the circulation pump corresponds to a first reference voltage when the mini washing machine executes the water-injection cycle. S25: Determine whether the operating voltage of the mini washing machine's circulation pump during the water-injection cycle is greater than the first reference voltage corresponding to the circulation pump during the water-injection cycle. S26: If so, determine that the circulation pump of the mini washing machine is stalled. S27: Control the circulation pump of the mini washing machine to reach a target speed, such as setting the target speed to 0, or setting another target speed value based on actual conditions.

[0073] When the washing machine performs a rinse cycle, the circulation pump speed is set to a second speed, such as 1000 r / min, to ensure that wash water is evenly sprayed on clothes. This increased spraying during the rinse cycle can reduce the washing machine's workload and save water and electricity. At this time, the circulation pump corresponds to a second reference voltage when the mini washing machine performs a rinse cycle. A determination is made as to whether the operating voltage of the circulation pump during the rinse cycle is greater than the second reference voltage corresponding to the circulation pump during the rinse cycle. If so, the circulation pump is determined to be stalled, and the circulation pump is controlled to reach a target speed, such as 0, or another target speed value as appropriate.

[0074] When the washing machine is performing a rinse cycle and the circulation pump is set to work intermittently, the system determines whether the voltage of the circulation pump during each intermittent working time of the mini washing machine is greater than the reference voltage corresponding to the circulation pump during each intermittent working time of the mini washing machine during the rinse cycle. If so, the circulation pump of the mini washing machine is determined to be blocked, and the circulation pump of the mini washing machine is controlled to reach the target speed, such as setting the target speed to 0, or setting another target speed value according to the actual situation.

[0075] When the mini washing machine is executing a spin cycle, the drain pump speed is set to a third speed, such as 3000 r / min. At this point, the drain pump corresponds to a third reference voltage when the mini washing machine is executing a spin cycle. S35: Determine whether the voltage of the drain pump during operation is greater than the third reference voltage corresponding to the drain pump during the spin cycle. S36: If so, determine that the drain pump of the mini washing machine is stalled. S38: Control the circulation pump of the mini washing machine to reach a target speed, such as setting the target speed to 0 or setting another target speed value based on actual conditions.

[0076] When the washing machine is performing a wash cycle, the circulation pump speed is set to a fourth speed, such as 3000 r / min, to ensure that wash water can be evenly and quickly applied to areas of the washing machine where detergent foam is likely to remain, such as the window lining and door glass, thereby reducing residual detergent foam. At this time, the circulation pump corresponds to a fourth reference voltage when the mini washing machine is performing a wash cycle. A determination is made as to whether the operating voltage of the circulation pump during the wash cycle is greater than the fourth reference voltage corresponding to the circulation pump during the wash cycle. If so, the circulation pump of the mini washing machine is determined to be stalled, and the circulation pump is controlled to reach a target speed, such as 0, or another target speed value as appropriate.

[0077] When the mini washing machine is executing a wash cycle, the drain pump speed is set to a fifth speed, such as 3000 r / min. At this point, the drain pump corresponds to a fifth reference voltage. A determination is made as to whether the operating voltage of the drain pump during the wash cycle is greater than the fifth reference voltage corresponding to the drain pump during the wash cycle. If so, the drain pump is determined to be stalled, and the circulation pump of the mini washing machine is controlled to reach a target speed, such as 0, or another target speed value as appropriate.

[0078] Example 2

[0079] A mini washing machine motor stall detection device 100, such as Figure 5 Shown, including:

[0080] An acquisition unit 101 is used to acquire the working program currently executed by the mini washing machine;

[0081] The detection unit 102 is used to detect the voltage of the DC brushless water pump of the mini washing machine in real time when it is working;

[0082] The judgment unit 103 is used to judge whether the voltage detected when the DC brushless water pump of the mini washing machine is working is greater than the reference voltage corresponding to the motor of the mini washing machine during the working program currently executed. If so, it is determined that the DC brushless water pump of the mini washing machine is blocked and the DC brushless water pump of the mini washing machine is controlled to reach the target speed.

[0083] For detailed description of each of the above units, please refer to the corresponding description in the above method embodiment, which will not be repeated here.

[0084] Example 3

[0085] A mini washing machine 200, such as Figure 6As shown, it includes but is not limited to: a memory 201 on which program codes are stored; a processor 202, which is connected to the memory and implements a method for detecting motor stall of a mini washing machine when the program codes are executed by the processor.

[0086] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences from other embodiments. In particular, the device embodiments are generally similar to the method embodiments, so the description is relatively simple. For relevant parts, refer to the description of the method embodiments.

[0087] The above description is only an example of the present invention and is not intended to limit one or more embodiments of the present invention. For those skilled in the art, various changes and variations may be made to one or more embodiments of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of the present invention shall be included in the scope of the claims of one or more embodiments of the present invention.

Claims

1. A method for detecting stalled rotor of a mini washing machine motor, characterized in that: The following steps are involved: Obtaining the working program currently executed by the mini washing machine; Real-time detection of the voltage of the DC brushless water pump of the mini washing machine when it is working; Determining whether the detected voltage of the DC brushless water pump of the mini washing machine when it is working is greater than a reference voltage corresponding to the motor of the mini washing machine during the working program currently executed; If the detected voltage of the DC brushless water pump during operation is greater than a reference voltage corresponding to the motor of the mini washing machine during the current operation program, it is determined that the DC brushless water pump of the mini washing machine is stalled, and the DC brushless water pump of the mini washing machine is controlled to reach a target speed; The working procedures currently executed by the mini washing machine include water filling procedure, washing procedure, rinsing procedure and dehydration procedure; wherein, When the mini washing machine performs the water filling program and the rinsing program, if the working time of the circulation pump reaches the preset time, it stops working; When the mini washing machine executes the dehydration program, if the collected water level data is less than the preset water level, the drainage pump stops working; The real-time detection of the voltage of the DC brushless water pump of the mini washing machine when it is working includes the steps of: When the mini washing machine executes the water filling program and the rinsing program, the voltage of the mini washing machine circulation pump is detected in real time within the preset time period; When the mini washing machine executes the dehydration program, the voltage of the drain pump is detected in real time during the process in which the water level data continues to decrease to a preset water level; The step of determining whether the voltage detected when the DC brushless water pump of the mini washing machine is working is greater than the reference voltage corresponding to the motor of the mini washing machine during the working procedure currently executed comprises the following steps: determining whether, when the mini washing machine executes a water filling program, a voltage of the mini washing machine circulation pump when the mini washing machine is operating is greater than a first reference voltage corresponding to the circulation pump when the mini washing machine executes the water filling program; determining whether, when the mini washing machine executes a rinsing program, a voltage at which the circulating pump of the mini washing machine operates is greater than a second reference voltage corresponding to the circulating pump of the mini washing machine when the mini washing machine executes the rinsing program; It is determined whether, when the mini washing machine executes the dehydration program, a voltage of the drain pump of the mini washing machine when the mini washing machine is operating is greater than a third reference voltage corresponding to the drain pump when the mini washing machine executes the dehydration program.

2. A method for detecting motor stall in a mini washing machine according to claim 1, characterized in that: When the mini washing machine performs a rinsing program, if the number of pauses of the circulating pump reaches a set number and the total working time reaches a preset time, the circulating pump stops working.

3. A method for detecting motor stall in a mini washing machine according to claim 2, characterized in that: The real-time detection of the voltage of the DC brushless water pump of the mini washing machine when it is working also includes the steps of: When the mini washing machine performs a rinsing program, the voltage of the mini washing machine's circulating pump is detected in real time during the intermittent working period.

4. A method for detecting stalled rotation of a mini washing machine motor according to claim 3, characterized in that: The step of determining whether the voltage detected when the DC brushless water pump of the mini washing machine is working is greater than the reference voltage corresponding to the motor of the mini washing machine during the working procedure currently executed by the mini washing machine further includes the following steps: It is determined whether the voltage of the circulation pump of the mini washing machine during each intermittent working time when the mini washing machine performs the rinsing program is greater than the reference voltage corresponding to the circulation pump during each intermittent working time when the mini washing machine performs the rinsing program.

5. A method for detecting motor stall in a mini washing machine according to any one of claims 1 to 4, characterized in that: The detection of the voltage during operation comprises the steps of: The motor drive current is collected through the current detection resistor connected to the DC brushless water pump power supply circuit to obtain the sampling voltage; Amplifying the sampled voltage through an analog signal to obtain a voltage amplification signal; Performing AD sampling on the voltage amplified signal to obtain the voltage of the DC brushless water pump of the mini washing machine when it is working; The target rotation speed is 0.

6. A mini washing machine motor stall detection device, using the method according to claim 1, characterized in that: include: an acquiring unit, configured to acquire a working program currently being executed by the mini washing machine; A detection unit, used for real-time detection of the voltage of the DC brushless water pump of the mini washing machine when it is working; The judgment unit is used to judge whether the voltage detected when the DC brushless water pump of the mini washing machine is working is greater than the reference voltage corresponding to the motor of the working program currently executed by the mini washing machine. If so, it is determined that the DC brushless water pump of the mini washing machine is stalled, and the DC brushless water pump of the mini washing machine is controlled to reach a target speed.

7. A mini washing machine, characterized in that: include: a memory having program code stored therein; A processor is coupled to the memory and implements the method of claim 1 when the program code is executed by the processor.

Images