Washing machine

Abstract

The invention discloses a washing machine. The washing machine comprises a box body; a clothes cylinder is arranged in the box body; the clutch is used for driving the clothes cylinder to rotate; the driving power supply is used for providing electric energy for the clutch to drive the clothes drum to rotate; the box body is also internally provided with a detection circuit which is electrically connected with the driving power supply and is used for detecting a voltage value output by the driving power supply; the controller is configured to execute the following steps that in the rotating process of the clothes cylinder, if the detection circuit detects that the driving voltage value output by the driving power source does not reach a preset voltage threshold value or above, the clutch is controlled to be in a shutdown state; and when the clutch is in the shutdown state, if the detection circuit detects that the driving voltage value output by the driving power supply reaches a preset voltage threshold value or above, the clutch is controlled to recover the running state. When the voltage of the washing machine is too low, the clutch can be controlled to be in the shutdown state, the situation that rotation of a motor of the washing machine is blocked due to frequent starting and stopping of the clutch caused by changes of the voltage of the washing machine is avoided, and the use experience of a user is improved.

Description

Technical Field

[0001] The present application relates to the technical field of smart home appliances, and in particular to a washing machine capable of automatically shutting down when a driving voltage is too low. Background Art

[0002] With the continuous development of science and technology and users' pursuit of a better and more convenient life, washing machines came into being, solving the tiring housework of washing clothes in people's daily lives and liberating people's hands. Therefore, washing machines have entered thousands of households.

[0003] Moreover, in a washing machine with a clutch, when the driving voltage is low, the clutch disengaged by the washing machine traction device will malfunction due to the low voltage, thereby loosening the traction device and causing the clutch to lock. For example, when the voltage drops to 70% of the rated voltage, the washing machine motor can still operate. At this time, there is a control blind spot, and the motor is still rotating but the clutch is locked, which can easily cause the motor to stall and the power components of the inverter board to heat up. Summary of the invention

[0004] The present application provides a washing machine, which can send a stop command to the clutch of a running washing machine when the driving voltage is lower than a preset voltage value, thereby avoiding the situation where the washing machine motor is blocked and the power components of the inverter board are heated, thereby improving the user experience.

[0005] In a first aspect, a washing machine is provided, the washing machine comprising:

[0006] Box;

[0007] A clothes barrel is arranged in the box;

[0008] A clutch, used to drive the rotation of the clothes barrel;

[0009] A driving power source, used to provide electrical energy for the clutch to drive the clothes drum to rotate;

[0010] The box is also provided with:

[0011] A detection circuit, the detection circuit is electrically connected to the driving power supply and is used to detect a voltage value output by the driving power supply;

[0012] The controller is configured to perform the following steps:

[0013] During the rotation of the clothes drum, if the detection circuit detects that the driving voltage value output by the driving power supply does not reach or exceed a preset voltage threshold, the clutch is controlled to be in a shutdown state;

[0014] When the clutch is in a stopped state, if the detection circuit detects that the driving voltage value output by the driving power source reaches above a preset voltage threshold, the clutch is controlled to resume a running state.

[0015] In the above embodiment, during the rotation of the washing machine drum, if the detection circuit detects that the voltage value output by the driving power supply does not reach above the preset voltage threshold, the clutch is controlled to be in a shutdown state, thereby preventing the motor from stalling. When the clutch is in a shutdown state, if the detection circuit detects that the driving voltage value output by the driving power supply reaches above the preset voltage threshold, the clutch is controlled to resume the operating state, thereby ensuring the normal operation of the washing machine, ensuring the washing effect, and improving the user experience.

[0016] In some embodiments, the detection circuit includes a filter module, and the filter module is used to convert the electric energy output by the driving power supply into a driving voltage signal;

[0017] The controller is further configured to perform the following steps:

[0018] According to a preset voltage signal conversion strategy, the driving voltage signal is converted into a corresponding driving voltage value.

[0019] In this embodiment, the electric energy output by the driving power supply is formed into a driving voltage signal through the filtering module in the detection circuit, and the driving voltage signal is converted into a corresponding driving voltage value according to a preset voltage signal conversion strategy, and then the obtained driving voltage value is compared with a preset driving voltage threshold, thereby not only obtaining a stable voltage signal after filtering, but also ensuring the accuracy and stability of the converted driving voltage value.

[0020] In some embodiments, the controller is further configured to perform the following steps:

[0021] Within a preset period, sampling the voltage signal output by the filtering module according to a preset frequency to obtain a plurality of sampled voltage signals;

[0022] The sampling voltage signal with the largest signal value among the plurality of sampling voltage signals is used as the driving voltage signal.

[0023] In the above embodiment, by collecting the voltage signal output by the filter module at a preset frequency within a preset period, multiple sampled voltage signals are obtained, and the signal with the largest signal value among the multiple sampled voltage signals is used as the driving voltage signal, thereby not only avoiding the randomness of the voltage signal, but also ensuring the validity of the collected driving voltage signal, realizing the intelligent control of the clutch, and improving the user experience.

[0024] In some embodiments, the detection circuit also includes a rectifier module, the input end of which is connected to the driving power supply, for converting the alternating current output by the driving power supply into direct current, and inputting the direct current into the input end of the filtering module.

[0025] In the above embodiment, the input end of the rectifier module in the detection circuit is connected to the driving power supply, so that the AC power output by the driving power supply is converted into DC power, and the AC power output by the driving power supply is converted into DC power that meets the requirements of signal acquisition after rectification, thereby ensuring that a stable sampling voltage signal can be generated.

[0026] In some embodiments, the detection circuit also includes a voltage divider module, one end of the voltage divider module is connected to the rectifier module, and the other end of the voltage divider module is connected to the filter module, wherein the alternating current output by the driving power supply flows through the rectifier module, the voltage divider module and the filter module in sequence.

[0027] In the above embodiment, the detection circuit also includes a voltage divider module, one end of which is connected to the rectifier module to divide the DC voltage output by the rectifier module, and then transmit the divided voltage to the filter module to convert the divided DC signal into a sampling signal through the filter module, thereby not only realizing the conversion of the AC power of the driving power supply into DC power, but also ensuring the stability of the voltage signal output by the detection circuit.

[0028] In some embodiments, the filtering module includes a first filtering unit and a second filtering unit, one end of the first filtering unit is connected to the voltage divider module, and the other end of the first filtering unit is connected to the input end of the second filtering unit;

[0029] The output terminal of the second filtering unit outputs the driving voltage signal.

[0030] In the above embodiment, a first filtering unit and a second filtering unit are provided in the filtering module to perform two-stage filtering on the driving voltage signal after passing through the voltage divider module, thereby making the obtained voltage signal more stable and more representative of the voltage value of the washing machine driving power supply, so as to improve the accuracy of the control of the washing machine clutch.

[0031] In some embodiments, the clutch further includes a dehydration shaft, the housing further includes a tractor, and the controller is further configured to perform the following steps:

[0032] During the rotation of the clothes drum, if the detection circuit detects that the driving voltage value output by the driving power supply does not reach or exceed a preset voltage threshold, the traction device is controlled to be connected to the dehydration shaft.

[0033] In this embodiment, a traction device is provided in the washing machine body, and a dehydration shaft is provided in the clutch. Therefore, during the rotation of the clothes drum, if it is detected that the driving voltage value output by the driving power supply does not reach above the preset voltage value, the traction device is controlled to be connected to the dehydration shaft, so that the clutch is in a shutdown state, thereby avoiding the problem of the clutch opening and closing due to the voltage fluctuation, causing the motor to stall, thereby improving the user experience.

[0034] In some embodiments, the controller is further configured to perform the following steps:

[0035] If the detection circuit detects that the driving voltage value output by the driving power source reaches above a preset voltage threshold, the traction device is controlled to disconnect the dehydration shafts.

[0036] In this embodiment, if the detection circuit detects that the driving voltage value output by the driving power supply reaches above the preset voltage threshold, it indicates that the driving voltage of the driving power supply of the washing machine has returned to normal, and the traction device is controlled to disengage the connection with the clutch dehydration shaft to restore the clutch to normal operation state, so that the motor can operate normally, thereby driving the rotation of the clothes drum and improving the user experience.

[0037] In some embodiments, the controller is further configured to perform the following steps:

[0038] Before the washing machine starts a washing program, obtaining a driving voltage value output by the detection circuit;

[0039] If the driving voltage value reaches or exceeds a preset voltage threshold, the washing machine is controlled to execute a washing program;

[0040] If the driving voltage value does not reach or exceed the preset voltage threshold, the washing machine is controlled to pause the start of the washing program.

[0041] In this embodiment, before the washing machine starts the washing program, the driving voltage value output by the detection circuit is obtained. If the driving voltage value reaches above the preset voltage threshold, the washing machine is controlled to execute the washing program. If the driving voltage does not reach above the preset voltage threshold, the washing machine is controlled to execute the washing program, thereby avoiding the motor stalling failure of the washing machine due to low voltage and improving the user experience.

[0042] In some embodiments, the controller is further configured to perform the following steps:

[0043] When the washing machine pauses and starts a washing program, sampling the driving voltage signal according to a preset sampling frequency to obtain a corresponding sampling voltage signal;

[0044] Based on a preset voltage conversion strategy, converting the sampled voltage signal into a corresponding sampled voltage value;

[0045] If the sampled voltage value reaches above a preset voltage threshold, the washing machine is controlled to start a washing program.

[0046] In this embodiment, when the washing machine pauses and starts the washing program, the driving voltage signal is sampled according to the preset sampling frequency to obtain the corresponding sampling voltage signal, and the sampling voltage signal is converted into the corresponding sampling voltage value according to the preset voltage conversion strategy. Then, if the sampling voltage value reaches above the preset voltage threshold, the washing machine is controlled to start the washing program, thereby ensuring the normal operation of the washing machine, improving the intelligence of the washing machine control, and enhancing the user experience.

[0047] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A partial structural schematic diagram of a washing machine shown in an exemplary embodiment of the present application is shown;

[0049] Figure 2 A partial structural schematic diagram of a washing machine shown in another exemplary embodiment of the present application is shown;

[0050] Figure 3 shows a schematic structural diagram of a detection circuit according to some embodiments;

[0051] Figure 4 shows a schematic structural diagram of a detection circuit according to some embodiments;

[0052] Figure 5 The structure diagram of a detection circuit according to some embodiments is exemplarily shown;

[0053] Figure 6 A schematic diagram of a circuit structure of a detection circuit according to some embodiments is exemplarily shown;

[0054] Figure 7 A partial structural schematic diagram of a washing machine shown in another exemplary embodiment of the application is exemplarily shown;

[0055] Figure 8 A flowchart for controlling a washing machine in an exemplary application scenario is exemplified. DETAILED DESCRIPTION

[0056] The terms "first", "second", "third", etc. in the specification and claims of this application and the above drawings are used to distinguish similar or similar objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances.

[0057] The terms "including" and "having" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0058] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0059] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0060] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0061] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0062] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0063] The "plurality" mentioned in this application refers to two or more than two. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship.

[0064] With the continuous development of science and technology and users' pursuit of a better and more convenient life, washing machines came into being, solving the tiring housework of washing clothes in people's daily lives and liberating people's hands. Therefore, washing machines have entered thousands of households.

[0065] Moreover, in a washing machine with a clutch, when the driving voltage is low, the clutch disengaged by the washing machine traction device will malfunction due to the low voltage, thereby loosening the traction device and causing the clutch to lock. For example, when the voltage drops to 70% of the rated voltage, the washing machine motor can still operate. At this time, there is a control blind spot, and the motor is still rotating but the clutch is locked, which can easily cause the motor to stall and the power components of the inverter board to heat up.

[0066] In order to solve the above technical problems, an embodiment of the present application provides a washing machine that can send a shutdown command to the clutch of a running washing machine when the driving voltage is lower than a preset voltage value, so as to avoid the washing machine motor from being blocked and the power device of the inverter board from heating up. In this way, the driving voltage of the washing machine is monitored, and the clutch is shut down when the driving voltage is too low to avoid the motor from being blocked; and when the driving voltage reaches the preset voltage threshold, the clutch is restored to the running state, thereby ensuring the normal operation of the washing machine, thereby improving the user experience. In addition, the present application can be a common product form such as a common pulsator washing machine, a drum washing machine, etc., or it can be a device integrated with a clutch, etc. The present application does not impose any restrictions on the product form of the washing machine.

[0067] See also Figure 1 , FIG. is a schematic structural diagram of a washing machine shown in an exemplary embodiment of the present application, such as Figure 1As shown, the washing machine includes a housing 101, a clothes drum 102, a clutch 103, a driving power supply 104, a detection circuit 105 and a controller 106, wherein the detection circuit 105 is connected to the driving power supply 104 and monitors the voltage signal output by the driving power supply 104 in real time, the controller 106 is connected to the detection circuit 105 to sample the voltage signal output by the driving power supply 104 when the detection circuit 105 detects it, and the controller 106 is also connected to the clutch 103 to shut down the clutch 103 when the controller 106 detects that the voltage value corresponding to the voltage signal output by the detection circuit 105 does not reach a preset voltage threshold value; and when the voltage value corresponding to the voltage signal output by the detection circuit 105 is detected to reach a preset voltage threshold value, the clutch 103 is controlled to resume normal operation, thereby realizing the control of the clutch according to the change of the voltage value corresponding to the driving power supply 104 of the washing machine. The controller 106 is specifically installed on a circuit board in the housing of the washing machine, and is configured with a dirt measurement control circuit composed of electronic components such as a memory. The controller 106 controls the washing machine to implement the corresponding dirt measurement and prompting functions by executing the control method stored in the memory. Specifically, the controller 106 is configured to execute the following steps S210 and S220, which are described in detail as follows:

[0068] Step S210: During the rotation of the clothes drum, if the detection circuit detects that the driving voltage value output by the driving power supply does not reach or exceed the preset voltage threshold, the clutch is controlled to be in a shutdown state.

[0069] First of all, it should be explained that the washing machine clutch is an important control component of the washing machine. Its working principle is that after the motor is started, the power of the motor is transmitted to the clutch through the transmission system. The clutch can realize low-speed rotation during washing and rinsing and high-speed rotation during dehydration, and perform the braking action at the end of dehydration. In addition, the motor can be synchronized with the input voltage through the shifting of the clutch, and the clothes required for washing can be spun dry at the same time. These two processes are completely separate, namely the clutch and the transmission shaft. In the washing process, the drum rotates the friction belt at high speed to spin the clothes in the washing tub or the huge impact force generated by the barrel in the spin dryer, and the clothes can be cleaned through the friction between the clutches.

[0070] Considering the clutch in the washing machine, after the motor is started, the power of the motor is transmitted to the clutch through the transmission system, thereby realizing the rotation of the washing machine drum. In this scenario, if the driving voltage of the washing machine is low, the clutch will be locked, and the motor will still rotate while the clutch is already locked. Therefore, in this embodiment, when the detection circuit detects that the output voltage value of the driving power supply of the washing machine does not reach the preset voltage threshold, the clutch can be controlled to be in a shutdown state, and then the motor is also in a shutdown state, thereby preventing the clutch from being locked while the motor is still rotating. Avoid the situation where the motor of the washing machine is blocked due to the traction device and the power device of the inverter board is heated.

[0071] Step S220: When the clutch is in a stopped state, if the detection circuit detects that the driving voltage value output by the driving power source reaches above a preset voltage threshold, the clutch is controlled to resume the running state.

[0072] When the clutch is in a shutdown state due to low voltage, if the detection circuit in the washing machine body detects that the driving voltage value of the washing machine reaches above the preset voltage threshold, it is determined that the driving voltage of the washing machine has returned to normal voltage, and the clutch can be restored to normal state. Exemplarily, when the clutch of the washing machine is controlled to be in a shutdown state due to the low driving voltage of the washing machine, the driving voltage of the washing machine is continuously monitored through the detection circuit in the washing machine body. When the driving voltage value of the washing machine reaches above the preset voltage threshold, the clutch of the washing machine is controlled to resume operation, so that after the motor is started, the power of the motor is transmitted to the clutch through the transmission action of the transmission system, and the clutch can realize low-speed rotation during washing and rinsing and high-speed rotation during dehydration, and perform the braking action at the end of dehydration.

[0073] In this embodiment, during the rotation of the washing machine drum, if the detection circuit detects that the voltage value output by the driving power supply does not reach above the preset voltage threshold, the clutch is controlled to be in a shutdown state, thereby preventing the motor from stalling. When the clutch is in a shutdown state, if the detection circuit detects that the driving voltage value output by the driving power supply reaches above the preset voltage threshold, the clutch is controlled to resume the operating state, thereby ensuring the normal operation of the washing machine, ensuring the washing effect, and improving the user experience.

[0074] Further, based on the above embodiments, in one of the exemplary embodiments provided in the present application, the above detection circuit includes a filtering module, and the filtering module is used to convert the electric energy output by the driving power supply into a driving voltage signal;

[0075] The controller is also configured to perform the following steps:

[0076] According to the preset voltage signal conversion strategy, the driving voltage signal is converted into a corresponding driving voltage value.

[0077] Specifically, Figure 2 The detection circuit includes a filtering module to filter the power signal output by the driving power supply of the washing machine to obtain a stable voltage signal after filtering. The function of the voltage filter is to filter out interference components such as clutter and noise in the input voltage signal and output a stable DC voltage signal to ensure the normal operation of subsequent circuits.

[0078] The working principle of voltage filtering is to filter the input signal through the filter network composed of capacitors and inductors, filter out the high-frequency components in the signal, and retain the low-frequency components for output. Among them, the capacitor can filter out the high-frequency noise in the input signal by accumulating and releasing the voltage; while the inductor can pass the low-frequency components through its self-inductance, thereby avoiding the instability of the power supply voltage.

[0079] The performance indicators of voltage filtering mainly include the frequency response, amplitude response and phase response of the filter. Frequency response refers to the response ability of the filter at different frequencies, including cutoff frequency and passband width; amplitude response refers to the degree of signal attenuation in the filter, that is, the situation where the amplitude of the signal is reduced when it is output; and phase response refers to the signal phase delay generated after the signal passes through the filter. In practical applications, performance indicators such as the quality factor and stability of capacitors and inductors also need to be considered.

[0080] Then, the voltage signal of the driving power supply of the washing machine is filtered by the filtering module of the detection circuit to obtain a corresponding stable driving voltage signal, and then, according to the preset voltage signal conversion strategy, the driving voltage signal is converted into a corresponding driving voltage value to facilitate comparison with the preset voltage threshold in the subsequent process.

[0081] In addition, the above-mentioned preset voltage signal conversion strategy is determined according to the maximum voltage value that the controller chip can withstand, that is, the corresponding preset voltage signal conversion strategy is set according to the internal algorithm of the controller chip. In this embodiment, the electric energy output by the driving power supply is formed into a driving voltage signal by the filtering module in the detection circuit, and the driving voltage signal is converted into a corresponding driving voltage value according to the preset voltage signal conversion strategy, and then the obtained driving voltage value is compared with the preset driving voltage threshold, so as to not only obtain a stable voltage signal after filtering, but also ensure the accuracy and stability of the converted driving voltage value.

[0082] Further, based on the above embodiment, in one of the exemplary embodiments provided in the present application, the controller is further configured to perform the following steps:

[0083] Within a preset period, sampling the voltage signal output by the filter module according to a preset frequency to obtain a plurality of sampled voltage signals;

[0084] The sampling voltage signal with the largest signal value among the multiple sampling voltage signals is used as the driving voltage signal.

[0085] Optionally, within a preset cycle length, the voltage signal output by the filter module of the detection circuit is sampled at a preset frequency. For example, taking the voltage signal output by the detection circuit being sampled 50 times in one cycle, the driving voltage signal output by the filter module of the detection circuit is sampled at a preset frequency, for example (2ms / time), to obtain 50 sampled voltage signals. Thus, the sampled voltage signal with the largest corresponding signal value can be selected from the 50 sampled voltage signals collected as the driving voltage signal, and the sampled voltage signal with the largest signal value is converted according to the preset voltage conversion strategy to obtain a driving voltage value, and the comparison result between the obtained driving voltage value and the preset voltage threshold is used to determine the control timing of the clutch.

[0086] In this embodiment, by collecting the voltage signal output by the filter module at a preset frequency within a preset period, multiple sampled voltage signals are obtained, and the signal with the largest signal value among the multiple sampled voltage signals is used as the driving voltage signal. This not only avoids the randomness of the voltage signal, but also ensures the validity of the collected driving voltage signal, realizes the intelligent control of the clutch, and improves the user experience.

[0087] Further, based on the above embodiments, in one of the exemplary embodiments provided in the present application, the above detection circuit also includes a rectifier module, the input end of the rectifier module is connected to the driving power supply, and is used to convert the alternating current output by the driving power supply into direct current, and input the direct current into the input end of the filtering module.

[0088] It should be noted that the rectifier circuit is a circuit that uses the unidirectional conductivity of the diode to convert the positive and negative alternating voltage into a unidirectional pulsating voltage. Under the action of the AC power supply, the rectifier diode is periodically turned on and off, so that the load receives pulsating DC power. In the positive half cycle of the power supply, the diode is turned on, so that the current on the load is exactly the same as the voltage waveform shape; in the negative half cycle of the power supply voltage, the diode is in a reverse cut-off state, bearing the negative half cycle voltage of the power supply, and the load voltage is almost zero.

[0089] For example, Figure 3As shown, the rectifier module includes a first diode and a second diode, wherein the first diode and the second diode are respectively connected to the live wire and the neutral wire of the driving power supply, so as to utilize the unidirectional conductivity of the regulator to convert the positive and negative changes into a unidirectional pulsating voltage signal, and input the unidirectional pulsating voltage signal to the filter module of the detection circuit, and then through the filter module, the capacitor in the filter module accumulates and releases the voltage, so that the high-frequency noise in the input signal can be filtered out; and the inductor in the filter module can pass the low-frequency component through its self-inductance, thereby avoiding the instability of the power supply voltage.

[0090] In this embodiment, the input end of the rectifier module in the detection circuit is connected to the driving power supply, so that the AC power output by the driving power supply is converted into DC power, and the AC power output by the driving power supply is converted into DC power that meets the requirements of signal acquisition after rectification, thereby ensuring that a stable sampling voltage signal can be generated.

[0091] Further, based on the above embodiments, in one of the exemplary embodiments provided in the present application, the above detection circuit also includes a voltage divider module, one end of the voltage divider module is connected to the rectifier module, and the other end of the voltage divider module is connected to the filter module, wherein the alternating current output by the driving power supply flows through the rectifier module, the voltage divider module and the filter module in sequence.

[0092] like Figure 4 As shown, the detection circuit also includes a voltage divider module, wherein one end of the voltage divider module is connected to the output end of the rectifier module, and the other end of the voltage divider module is connected to the input end of the filter module, so that the AC power output by the washing machine driving power supply is processed by the rectifier module to obtain a unidirectional pulsating DC voltage signal, and after voltage division by the voltage divider module, the divided DC voltage signal is directly input into the filter module, so that the high-frequency noise in the DC voltage signal is filtered out by the filter module; and the inductor in the filter module can pass the low-frequency component through its self-inductance, thereby avoiding the instability of the DC voltage signal.

[0093] In this embodiment, the detection circuit also includes a voltage divider module, one end of which is connected to the rectifier module to divide the DC voltage output by the rectifier module, and then transmit the divided voltage to the filter module to convert the divided DC signal into a sampling signal through the filter module, thereby not only realizing the conversion of the AC power of the driving power supply into DC power, but also ensuring the stability of the voltage signal output by the detection circuit.

[0094] Further, based on the above embodiments, in one of the exemplary embodiments provided in the present application, the above filtering module includes a first filtering unit and a second filtering unit, one end of the first filtering unit is connected to the voltage divider module, and the other end of the first filtering unit is connected to the input end of the second filtering unit;

[0095] The output terminal of the second filter unit outputs a driving voltage signal.

[0096] like Figure 5 As shown, the filtering module includes two-stage filtering, and a first-stage filtering unit is formed by the first capacitor C1. Through the self-inductance of the first capacitor C1, the low-frequency component in the DC voltage signal after passing through the voltage divider module can be passed, thereby avoiding the instability factor of the power supply voltage and ensuring the stability of the output drive voltage signal. Then, a second-stage filtering unit is formed by the fourth resistor R4 and the second capacitor C2. The fourth resistor R4 and the second capacitor C2 are connected in series, and the voltage value of the second capacitor C2 is related to the frequency. The higher the frequency, the lower the capacitive reactance of the second capacitor C2, and the lower the voltage is, which forms a low-pass filter.

[0097] In this embodiment, a first filtering unit and a second filtering unit are provided in the filtering module to perform two-stage filtering on the driving voltage signal after passing through the voltage divider module, thereby making the obtained voltage signal more stable and more representative of the voltage value of the washing machine driving power supply, so as to improve the accuracy of the control of the washing machine clutch.

[0098] In an exemplary embodiment, Figure 6 As shown, Figure 6 An exemplary detection circuit structure diagram is provided, such as Figure 6 As shown, the rectifier module of the detection circuit includes a first diode and a second diode, wherein one end of the first diode is connected to the driving power supply of the washing machine, the other end of the first diode is connected to the voltage divider module, one end of the second diode is connected to the driving power supply, and the other end of the second diode is connected to the first diode, and then the DC voltage signal generated by the rectifier module is sent to the voltage divider module, wherein the voltage divider module includes a first resistor R1, a second resistor R2 and a third resistor R3, wherein the rectifier module includes a first capacitor C1, a fourth resistor R4 and a second capacitor C2, wherein the low-frequency component is passed through by the self-inductance of the second capacitor C2, thereby avoiding the instability of the DC voltage signal.

[0099] Further, based on the above embodiment, in one of the exemplary embodiments provided in the present application, the above clutch further includes a dehydration shaft, the box body further includes a tractor, and the controller is further configured to perform the following steps:

[0100] During the rotation of the clothes drum, if the detection circuit detects that the driving voltage value output by the driving power supply does not reach above the preset voltage threshold, the traction device is controlled to be connected to the dehydration shaft.

[0101] Optional, such as Figure 7As shown, the washing machine also includes a traction device in the housing, and a dehydration shaft is arranged on the clutch. When the washing machine executes the dehydration program, if the detection circuit detects that the driving voltage value output by the driving power supply of the washing machine does not reach or exceed the preset voltage threshold, the traction device in the washing machine is controlled to be connected to the dehydration shaft of the clutch, thereby avoiding the situation that the washing machine motor is blocked due to frequent starting and stopping of the clutch caused by the change of the voltage of the washing machine.

[0102] In addition, in some feasible embodiments, a washing shaft is also provided on the clutch. When the washing machine executes the washing program, if the detection circuit detects that the driving voltage value output by the driving power supply of the washing machine does not reach above the preset voltage threshold, the traction device in the washing machine is controlled to be connected to the washing shaft of the clutch, thereby stopping the clutch and preventing the force output by the motor from being transmitted to the clothes drum normally, thereby avoiding the situation where the rotation of the washing machine motor is blocked due to too low voltage of the clutch.

[0103] In this embodiment, a traction device is provided in the washing machine body, and a dehydration shaft is provided in the clutch. Therefore, during the rotation of the clothes drum, if it is detected that the driving voltage value output by the driving power supply does not reach above the preset voltage value, the traction device is controlled to be connected to the dehydration shaft, so that the clutch is in a shutdown state, thereby avoiding the problem of the clutch opening and closing due to the voltage fluctuation, causing the motor to stall, thereby improving the user experience.

[0104] Further, based on the above embodiment, in one of the exemplary embodiments provided in the present application, the controller is further configured to perform the following steps:

[0105] If the detection circuit detects that the driving voltage value output by the driving power source reaches above the preset voltage threshold, the traction device is controlled to disconnect the connection between the dehydration shafts.

[0106] Specifically, in the washing program or the dehydration program of the washing machine, if the driving voltage value of the washing machine is too low, the clutch is controlled to shut down, and the driving voltage value of the washing machine continues to be detected through the detection circuit. If it is detected that the driving voltage value of the washing machine reaches above the preset voltage threshold, the traction device in the washing machine is controlled to disengage the connection with the dehydration shaft of the clutch, so that the clutch can be normally combined with the motor to drive the rotation of the washing machine under the transmission force of the motor.

[0107] In this embodiment, if the detection circuit detects that the driving voltage value output by the driving power supply reaches above the preset voltage threshold, it indicates that the driving voltage of the driving power supply of the washing machine has returned to normal, and the traction device is controlled to disengage from the clutch dehydration shaft to restore the clutch to a normal operating state, so that the motor can operate normally, thereby driving the rotation of the clothes drum and improving the user experience.

[0108] Further, based on the above embodiment, in one of the exemplary embodiments provided in the present application, the above controller is further configured to perform the following steps S310 to S330, which are described in detail as follows: Step S310, before the washing machine starts a washing program, obtaining a driving voltage value output by the detection circuit;

[0109] Step S320, if the driving voltage value reaches or exceeds the preset voltage threshold, the washing machine is controlled to execute a washing program;

[0110] Step S330: If the driving voltage value does not reach or exceed the preset voltage threshold, the washing machine is controlled to pause the start of the washing program.

[0111] Specifically, before the washing machine starts the washing program, the voltage signal output by the filter module of the detection circuit is sampled and processed to obtain multiple sampled voltage signals. If the sampled voltage signal with the maximum voltage value among the multiple sampled voltage signals is detected as the driving voltage signal, if the voltage value corresponding to the driving voltage signal reaches or exceeds the preset voltage threshold, it indicates that the voltage of the current washing machine can ensure the normal operation of the motor and clutch of the washing machine. If the voltage value corresponding to the driving signal does not reach or exceed the preset voltage threshold, it indicates that the driving voltage of the current washing machine cannot ensure the normal operation of the clutch and motor of the washing machine. The instability of the driving voltage will cause the clutch in the washing machine to frequently return to its position due to the unstable voltage, causing the clutch to frequently start and stop, resulting in motor stalling. Therefore, in this embodiment, the clutch shutdown process of the washing machine is directly controlled.

[0112] In this embodiment, before the washing machine starts the washing program, the driving voltage value output by the detection circuit is obtained. If the driving voltage value reaches above the preset voltage threshold, the washing machine is controlled to execute the washing program. If the driving voltage does not reach above the preset voltage threshold, the washing machine is controlled to execute the washing program, thereby avoiding the motor stalling failure of the washing machine due to low voltage and improving the user experience.

[0113] Further, based on the above embodiment, in one of the exemplary embodiments provided in the present application, the above controller is further configured to perform the following steps S410 to S430, which are described in detail as follows:

[0114] Step S410, when the washing machine pauses and starts the washing program, sampling the driving voltage signal according to a preset sampling frequency to obtain a corresponding sampled voltage signal;

[0115] Step S420, based on a preset voltage conversion strategy, convert the sampled voltage signal into a corresponding sampled voltage value; Step S430, if the sampled voltage value reaches above a preset voltage threshold, control the washing machine to start a washing program.

[0116] Optionally, during the pause and start process of the washing machine's washing program, the driving voltage signal output by the detection circuit is sampled at a preset frequency to obtain a corresponding sampling signal value, the sampled voltage signal is converted into a corresponding sampling voltage value according to a preset voltage conversion strategy, and the sampled voltage value is compared with a preset voltage threshold. If the sampled voltage value reaches above the preset voltage threshold, the washing machine is controlled to start the washing program.

[0117] For example, before the washing machine starts the washing program, wherein the washing program includes the dehydration program of the washing machine, and the drying program includes the program of the washing machine drum rotation. Since the driving voltage value of the washing machine does not reach above the preset voltage threshold, the washing machine is controlled to pause the start of the washing program, and when it is detected that the driving voltage value of the washing machine reaches above the preset voltage threshold, the washing machine is controlled to start the washing program, thereby avoiding the phenomenon that the traction device in the washing machine is frequently opened and closed during the washing program, resulting in frequent start and stop of the clutch, and then causing the motor to be blocked and the control failure of the frequency conversion hardware, etc. due to the driving voltage of the washing machine being too low or the driving voltage being unstable.

[0118] In this embodiment, when the washing machine pauses and starts the washing program, the driving voltage signal is sampled according to the preset sampling frequency to obtain the corresponding sampling voltage signal, and the sampling voltage signal is converted into the corresponding sampling voltage value according to the preset voltage conversion strategy. Then, if the sampling voltage value reaches above the preset voltage threshold, the washing machine is controlled to start the washing program, thereby ensuring the normal operation of the washing machine, improving the intelligence of the washing machine control, and enhancing the user experience.

[0119] See also Figure 8 , Figure 8 is a flow chart of refrigerator clutch control in an exemplary application scenario. Figure 8 In the application scenario shown, the detection circuit detects the driving voltage value output by the driving power supply of the washing machine, and determines whether the driving voltage value of the washing machine reaches or exceeds the preset driving voltage threshold. If the driving voltage value of the washing machine does not reach or exceeds the preset driving voltage threshold, the clutch of the washing machine is controlled to be in a shutdown state. Within a preset period, the driving voltage value signal value output by the detection circuit is sampled at a preset frequency to obtain multiple sampled voltage signals, and the voltage value corresponding to the sampled voltage signal with the largest voltage value among the multiple sampled voltage signals is used as the driving voltage value to determine whether the driving voltage value of the washing machine reaches or exceeds the preset driving voltage threshold. If the driving voltage value of the washing machine reaches or exceeds the preset driving voltage threshold, the clutch of the washing machine is controlled to be in a recovery operation state, thereby ensuring that the washing machine can operate normally. For the detailed implementation process, please refer to the records in the aforementioned embodiments, which will not be repeated here.

[0120] The flowchart and block diagram in the accompanying drawings illustrate the possible architecture, functions and operations of the system, method and computer program product according to various embodiments of the present application. Wherein, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0121] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. The names of these units do not, in some cases, constitute limitations on the units themselves.

[0122] The above content is only a preferred exemplary embodiment of the present application and is not intended to limit the implementation scheme of the present application. A person skilled in the art can easily make corresponding changes or modifications based on the main concept and spirit of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection required by the claims.

[0123] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0124] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A washing machine, characterized in that: The washing machine comprises: Box; A clothes barrel is arranged in the box; A clutch, used to drive the rotation of the clothes barrel; A driving power source, used to provide electrical energy for the clutch to drive the clothes drum to rotate; The box is also provided with: A detection circuit, the detection circuit is electrically connected to the driving power supply and is used to detect a voltage value output by the driving power supply; The controller is configured to perform the following steps: During the rotation of the clothes drum, if the detection circuit detects that the driving voltage value output by the driving power supply does not reach or exceed the preset voltage threshold, the clutch is controlled to be in a shutdown state; When the clutch is in a stopped state, if the detection circuit detects that the driving voltage value output by the driving power source reaches above a preset voltage threshold, the clutch is controlled to resume a running state.

2. The washing machine according to claim 1, characterized in that: The detection circuit includes a filter module, and the filter module is used to convert the electric energy output by the driving power supply into a driving voltage signal; The controller is further configured to perform the following steps: According to a preset voltage signal conversion strategy, the driving voltage signal is converted into a corresponding driving voltage value.

3. The washing machine according to claim 2, characterized in that: The controller is further configured to perform the following steps: Within a preset period, sampling the voltage signal output by the filtering module according to a preset frequency to obtain a plurality of sampled voltage signals; The sampling voltage signal with the largest signal value among the plurality of sampling voltage signals is used as the driving voltage signal.

4. The washing machine according to claim 2, characterized in that: The detection circuit also includes a rectifier module, an input end of which is connected to the driving power supply, for converting the alternating current output by the driving power supply into direct current, and inputting the direct current into the input end of the filtering module.

5. The washing machine according to claim 4, characterized in that: The detection circuit also includes a voltage divider module, one end of the voltage divider module is connected to the rectifier module, and the other end of the voltage divider module is connected to the filter module, wherein the alternating current output by the driving power supply flows through the rectifier module, the voltage divider module and the filter module in sequence.

6. The washing machine according to claim 5, characterized in that: The filtering module comprises a first filtering unit and a second filtering unit, one end of the first filtering unit is connected to the voltage dividing module, and the other end of the first filtering unit is connected to the input end of the second filtering unit; The output terminal of the second filtering unit outputs the driving voltage signal.

7. The washing machine according to claim 1, characterized in that: The clutch further includes a dehydration shaft, the housing further includes a tractor, and the controller is further configured to perform the following steps: During the rotation of the clothes drum, if the detection circuit detects that the driving voltage value output by the driving power supply does not reach or exceed a preset voltage threshold, the traction device is controlled to be connected to the dehydration shaft.

8. The washing machine according to claim 7, characterized in that: The controller is further configured to perform the following steps: If the detection circuit detects that the driving voltage value output by the driving power source reaches above a preset voltage threshold, the traction device is controlled to disconnect the dehydration shafts.

9. The washing machine according to claim 1, characterized in that: The controller is further configured to perform the following steps: Before the washing machine starts a washing program, obtaining a driving voltage value output by the detection circuit; If the driving voltage value reaches or exceeds a preset voltage threshold, the washing machine is controlled to execute a washing program; If the driving voltage value does not reach or exceed the preset voltage threshold, the washing machine is controlled to pause the start of the washing program.

10. The washing machine according to claim 9, characterized in that: The controller is further configured to perform the following steps: When the washing machine pauses and starts a washing program, sampling the driving voltage signal according to a preset sampling frequency to obtain a corresponding sampling voltage signal; Based on a preset voltage conversion strategy, converting the sampled voltage signal into a corresponding sampled voltage value; If the sampled voltage value reaches above a preset voltage threshold, the washing machine is controlled to start a washing program.

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