Filter circuit, household appliance, control method, and computer-readable storage medium

Abstract

A filter circuit (10), a household appliance (40), a control method, and a computer-readable storage medium. The filter circuit (10) is used for a motor (20). The filter circuit (10) comprises a first resistor (11) and a first capacitor (14). The filter circuit (10) is configured in such a manner that a circuit is formed by a first live wire end (12), the first resistor (11), and the first capacitor (14), and a neutral wire end (15) to charge the first capacitor (14), and when the first capacitor (14) meets a preset charging condition, a power supply circuit is formed by a second live wire end (13), the motor (20), and the neutral wire end (15), so as to power the motor (20) by means of output ends (18).

Description

Filter circuit, household appliance, control method and computer-readable storage medium

[0001] Priority information

[0002] This application claims priority and benefits of the patent application with patent application number 202311284433.X filed with the State Intellectual Property Office of China on September 28, 2023, and the entire text of which is incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of household appliances, and in particular to a filter circuit, a household appliance, a control method, and a computer-readable storage medium. Background Art

[0004] Synchronous motors are typically started directly, which can result in significant voltage interference during startup. Adding appropriate filtering components can effectively filter out this voltage interference, but the excessive starting current can damage the filter components. Adding current-limiting components to reduce the starting current further compromises the filter's ability to effectively filter out this voltage interference.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a filter circuit, a household appliance, a control method, and a computer-readable storage medium to solve at least one of the above-mentioned technical problems.

[0007] A filter circuit according to an embodiment of the present application is used for a motor, and the filter circuit includes:

[0008] a first resistor, one end of the first resistor being connected to the first live wire terminal, and the other end of the first resistor being connected to the second live wire terminal; and

[0009] a first capacitor, the first resistor is connected in series to the first capacitor, one end of the first capacitor is connected to the second live wire terminal, the other end of the first capacitor is connected to the neutral wire terminal, both ends of the first capacitor form output terminals, and the output terminals are used to connect to the motor;

[0010] The filtering circuit is configured to form a charging circuit through the first live wire terminal, the first resistor, the first capacitor and the neutral wire terminal to charge the first capacitor, and to form a power supply circuit through the second live wire terminal, the motor and the neutral wire terminal to power the motor through the output terminal when the first capacitor meets a preset charging condition.

[0011] The above-mentioned filtering circuit charges the first capacitor by forming a charging circuit before starting the motor. The first resistor connected in series with the first capacitor can reduce the current charging the first capacitor. After a certain amount of charge has been stored in the first capacitor, the power supply circuit is formed to power the motor. At this time, the current charging the first capacitor is very small and will not damage the first capacitor. In addition, the first resistor is not connected to the power supply circuit, which will not affect the filtering effect of the first capacitor.

[0012] In some embodiments, the preset charging condition includes:

[0013] The duration of charging the first capacitor reaches a first preset duration, which is beneficial to improving controllability.

[0014] In some embodiments, the filter circuit is connected to one end of a preset power supply via the first live wire terminal and the second live wire terminal, and is connected to the other end of the preset power supply via the neutral wire terminal. This helps to improve circuit safety.

[0015] In some embodiments, the filtering circuit includes:

[0016] a first switch connected to the first live wire terminal for conducting or disconnecting a path between the first live wire terminal and a first preset power source; and

[0017] a second switch connected to the second live wire terminal for conducting or disconnecting a path between the second live wire terminal and a second preset power source;

[0018] The filter circuit is configured to close the first switch to form the charging circuit, and to close the second switch to form the power supply circuit when the first capacitor meets the preset charging condition. This helps ensure the starting speed of the motor.

[0019] In some embodiments, when the first capacitor meets the preset charging condition, the first switch is configured to open within a second preset time period after the second switch is closed. In this way, the influence of the first resistor on the filtering effect of the first capacitor can be reduced.

[0020] A household appliance provided in an embodiment of the present application includes:

[0021] motor; and

[0022] The filter circuit described in any one of the above embodiments.

[0023] In the above-mentioned household appliance, before starting the motor, a charging circuit is formed to charge the first capacitor. The first resistor connected in series with the first capacitor can reduce the current used to charge the first capacitor. After a certain amount of charge has been stored in the first capacitor, a power supply circuit is formed to power the motor. At this time, the current used to charge the first capacitor is very small and will not damage the first capacitor. In addition, the first resistor is not connected to the power supply circuit, which will not affect the filtering effect of the first capacitor.

[0024] A control method provided in an embodiment of the present application is used for a household appliance, wherein the household appliance includes a filter circuit and a motor, wherein the filter circuit includes:

[0025] a first resistor, one end of the first resistor being connected to the first live wire terminal, and the other end of the first resistor being connected to the second live wire terminal; and

[0026] a first capacitor, the first resistor is connected in series to the first capacitor, one end of the first capacitor is connected to the second live wire terminal, the other end of the first capacitor is connected to the neutral wire terminal, both ends of the first capacitor form output terminals, and the output terminals are used to connect to the motor;

[0027] The control method includes:

[0028] connecting the first live wire terminal and the neutral wire terminal to charge the first capacitor;

[0029] When it is determined that the first capacitor meets a preset charging condition, the second live wire terminal and the neutral wire terminal are connected to supply power to the motor through the output terminal.

[0030] In the above control method, before starting the motor, a charging circuit is formed to charge the first capacitor, and a first resistor connected in series with the first capacitor can reduce the current used to charge the first capacitor. After a certain amount of charge has been stored in the first capacitor, a power supply circuit is formed to power the motor. At this time, the current used to charge the first capacitor is very small and will not damage the first capacitor. In addition, the first resistor is not connected to the power supply circuit, which will not affect the filtering effect of the first capacitor.

[0031] In certain embodiments, the control method comprises:

[0032] When it is determined that the first live wire terminal is connected, controlling the motor to remain in an off state;

[0033] When it is determined that the second live wire terminal is connected, the motor is controlled to enter the on state. In this way, the starting timing of the motor can be conveniently determined.

[0034] In certain embodiments, the control method comprises:

[0035] When the first capacitor meets the preset charging condition, the connection with the first live terminal is disconnected within a second preset time period after the second live terminal is connected. In this way, the influence of the first resistor on the filtering effect of the first capacitor can be reduced.

[0036] A household appliance provided in an embodiment of the present application includes a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the control method described in any one of the above embodiments can be implemented.

[0037] In the above-mentioned household appliance, before starting the motor, a charging circuit is formed to charge the first capacitor. The first resistor connected in series with the first capacitor can reduce the current used to charge the first capacitor. After a certain amount of charge has been stored in the first capacitor, a power supply circuit is formed to power the motor. At this time, the current used to charge the first capacitor is very small and will not damage the first capacitor. In addition, the first resistor is not connected to the power supply circuit, which will not affect the filtering effect of the first capacitor.

[0038] An embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the computer program can implement the steps of the control method described in any one of the above embodiments.

[0039] In the above-mentioned household appliance, before starting the motor, a charging circuit is formed to charge the first capacitor. The first resistor connected in series with the first capacitor can reduce the current used to charge the first capacitor. After a certain amount of charge has been stored in the first capacitor, a power supply circuit is formed to power the motor. At this time, the current used to charge the first capacitor is very small and will not damage the first capacitor. In addition, the first resistor is not connected to the power supply circuit, which will not affect the filtering effect of the first capacitor.

[0040] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0042] FIG1 is a schematic diagram of a partial circuit structure of a household appliance according to an embodiment of the present application;

[0043] FIG2 is a schematic diagram of another circuit structure of a household appliance according to an embodiment of the present application;

[0044] FIG3 is a flow chart of a control method according to an embodiment of the present application;

[0045] FIG4 is a module diagram of a household appliance according to an embodiment of the present application;

[0046] FIG5 is another flowchart of the control method according to an embodiment of the present application.

[0047] Figure Number:

[0048] Filter circuit 10, first resistor 11, first live wire terminal 12, second live wire terminal 13, first capacitor 14, neutral wire terminal 15, first switch 16, second switch 17, output terminal 18;

[0049] Motor-20;

[0050] Preset power source-30, first preset power source-31, second preset power source-32;

[0051] Household appliance-40, control module-41. DETAILED DESCRIPTION

[0052] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0053] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present application. In order to simplify the disclosure of the embodiments of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. The embodiments of the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the embodiments of the present application provide examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0054] Referring to FIG. 1 , a filter circuit 10 according to an embodiment of the present application is used for a motor 20 . The filter circuit 10 includes a first resistor 11 and a first capacitor 14 . One end of the first resistor 11 is connected to a first live wire terminal 12 , and the other end of the first resistor 11 is connected to a second live wire terminal 13 . The first resistor 11 is connected in series with the first capacitor 14 . One end of the first capacitor 14 is connected to the second live wire terminal 13 , and the other end of the first capacitor 14 is connected to a neutral wire terminal 15 . The two ends of the first capacitor 14 form output terminals 18 , which are used to connect to the motor 20 .

[0055] The filter circuit 10 is configured to form a charging circuit through the first live wire terminal 12, the first resistor 11, the first capacitor 14 and the neutral wire terminal 15 to charge the first capacitor 14, and to form a power supply circuit through the second live wire terminal 13, the motor 20 and the neutral wire terminal 15 to power the motor 20 through the output terminal 18 when the first capacitor 14 meets the preset charging conditions.

[0056] The above-mentioned filtering circuit 10 charges the first capacitor 14 by forming a charging circuit before starting the motor 20. The first resistor 11 connected in series with the first capacitor 14 can reduce the current when charging the first capacitor 14; after a certain amount of charge has been stored in the first capacitor 14, a power supply circuit is formed to power the motor 20. At this time, the current generated by charging the first capacitor 14 is very small and will not damage the first capacitor 14. In addition, the first resistor 11 is not connected to the power supply circuit, which will not affect the filtering effect of the first capacitor 14.

[0057] Specifically, in the embodiment shown in FIG1 , before the motor 20 needs to be started, the first live wire terminal 12 can be connected to the positive pole of the external power supply, and the neutral wire terminal 15 can be connected to the negative pole of the external power supply, so that the external power supply is connected in series with the first resistor 11 and the first capacitor 14 through the first live wire terminal 12 and the neutral wire terminal 15, thereby forming a charging circuit for the first capacitor 14. When the first capacitor 14 is connected to the charging circuit, it can be charged by providing an electric charge through the external power supply, so that a corresponding amount of charge is stored in the first capacitor 14. When charging the first capacitor 14, a charging current for the first capacitor 14 is generated in the power supply circuit. Since the first resistor 11 is also connected in series in the charging circuit, the first resistor 11 has a current limiting effect in the charging circuit, which can reduce the charging current in the charging circuit, thereby providing a protective effect for the first capacitor 14 and preventing the charging current from being too large and causing damage to the first capacitor 14.

[0058] When the first capacitor 14 meets the preset charging conditions, it can be determined that a corresponding amount of charge has been stored in the first capacitor 14, so that the first live wire terminal 12 can be connected to the positive pole of the external power supply, and the neutral wire terminal 15 can be connected to the negative pole of the external power supply, so that the external power supply is connected in series with the motor 20 through the second live wire terminal 13 and the neutral wire terminal 15, forming a power supply circuit for the motor 20. In the power supply circuit, the first capacitor 14 is connected in parallel with the motor 20, and the external power supply supplies power to the motor 20. In the case of voltage interference in the power supply circuit, the energy in the voltage interference can be absorbed by the first capacitor 14 to achieve the effect of reducing the voltage interference. When starting the motor 20, even if a charging current for the first capacitor 14 is still generated in the power supply circuit, the magnitude of the charging current will be reduced due to the corresponding amount of charge stored in the first capacitor 14, and the first capacitor 14 will not be damaged. In addition, the first resistor 11 is not connected to the power supply circuit, so the first resistor 11 will not affect the filtering effect of the first capacitor 14. The external power supply can be provided by the mains.

[0059] In some embodiments, the motor 20 may include a motor circuit, a stator, and a rotor. Specifically, the motor circuit of the motor 20 may be electrically connected to the stator and the rotor. When the motor 20 is turned on, the motor circuit of the motor 20 may be energized via a power supply circuit, thereby driving the rotor to rotate relative to the stator.

[0060] In some embodiments, the preset charging condition includes that the duration of charging the first capacitor 14 reaches a first preset duration.

[0061] This helps improve controllability.

[0062] It is understood that the charge in the first capacitor 14 will gradually increase over time during charging, and the pattern of the charge increase can also be determined, so that the degree of charge storage in the first capacitor 14 can be determined based on the duration of charging the first capacitor 14. After the first capacitor 14 has stored a certain amount of charge, it can be connected to the circuit that powers the motor 20, and the charging current generated after connection is also sufficiently small. Based on the above, when the duration of charging the first capacitor 14 reaches the first preset duration, it can be determined that the first capacitor 14 is able to be connected to the power supply circuit, so that the filter circuit 10 can be adjusted to power the motor 20 through the second live wire terminal 13 and the neutral wire terminal 15, thereby facilitating the determination of the control timing for adjusting the filter circuit 10, which is conducive to improving controllability.

[0063] In addition, the first preset duration can be determined based on specific circumstances or calibrated through actual testing. In some embodiments, the first preset duration can be determined by the capacitance value of the first capacitor 14, the resistance value of the first resistor 11, and the allowable charge of the first capacitor 14. The allowable charge of the first capacitor 14 can be the minimum charge that can be stored when the first capacitor 14 can be connected to the power supply circuit. In one embodiment, the first preset duration can be 1 second.

[0064] 1 , in some embodiments, the filter circuit 10 is connected to one end of a preset power source 30 via a first live wire terminal 12 and a second live wire terminal 13 , and is connected to the other end of the preset power source 30 via a neutral wire terminal 15 .

[0065] This is beneficial to improving circuit safety.

[0066] Specifically, based on the aforementioned embodiment, the external power supply may be a preset power supply 30. It is understood that the filter circuit 10 can be connected to one end of the preset power supply 30 via the first live wire terminal 12 so that the preset power supply 30 charges the first capacitor 14, and can be connected to one end of the preset power supply 30 via the second live wire terminal 13 so that the preset power supply 30 supplies power to the motor 20. Even if the first live wire terminal 12 and the second live wire terminal 13 are simultaneously connected to one end of the preset power supply 30, there will be no voltage difference between the first live wire terminal 12 and the second live wire terminal 13, thereby avoiding reverse charging between the external power supply connected to the first live wire terminal 12 and the external power supply connected to the second live wire terminal 13, which is ultimately conducive to improving circuit safety.

[0067] 2 , in some embodiments, the filter circuit 10 includes a first switch 16 and a second switch 17. The first switch 16 is connected to the first live terminal 12 to connect or disconnect the first live terminal 12 from the first preset power source 31. The second switch 17 is connected to the second live terminal 13 to connect or disconnect the second live terminal 13 from the second preset power source 32.

[0068] The filter circuit 10 is configured to form a charging loop by closing the first switch 16 , and to form a power supply loop by closing the second switch 17 when the first capacitor 14 meets a preset charging condition.

[0069] This helps to ensure the starting speed of the motor 20.

[0070] Specifically, in the embodiment shown in FIG2 , the first switch 16 is connected to the positive electrode of the first preset power source 31, the second switch 17 is connected to the positive electrode of the second preset power source 32, and the neutral terminal 15 is connected to the negative electrode of the first preset power source 31 and the negative electrode of the second preset power source 32. When it is necessary to start the motor 20, the first switch 16 can be controlled to close and connect the first live terminal 12 with the positive electrode of the first preset power source 31, so that the first capacitor 14 is charged by the first preset power source 31. When it is determined that the first capacitor 14 meets the preset charging conditions, the second switch 17 can be controlled to close and connect the second live terminal 13 with the positive electrode of the second preset power source 32, and the motor 20 can be controlled to start, so that the motor 20 is powered by the second preset power source 32.

[0071] On the basis of the above embodiment, the charging circuit and the power supply circuit are respectively formed by closing the first switch 16 and closing the second switch 17, and the first switch 16 and the second switch 17 are on different circuits and are independent of each other, so that it is easy to control the opening and closing of the first switch 16 and the second switch 17 respectively, so as to facilitate the rapid switching between the charging circuit and the power supply circuit, and will not increase the delayed starting time of the motor 20 due to the need to charge the first capacitor 14, which is conducive to ensuring the starting speed of the motor 20.

[0072] In addition, referring to FIG. 1 , in the embodiment shown in FIG. 1 , the first preset power source 31 and the second preset power source 32 are both preset power sources 30 .

[0073] 1 and 2 , in some embodiments, when the first capacitor 14 meets a preset charging condition, the first switch 16 is configured to be disconnected within a second preset time period after the second switch 17 is closed.

[0074] In this way, the influence of the first resistor 11 on the filtering effect of the first capacitor 14 can be reduced.

[0075] Specifically, it can be understood that within a period of time after the second switch 17 is closed, the filter circuit 10 is in a state of supplying power to the motor 20 via the first preset power source 31 and the second preset power source 32. At this time, the first resistor 11 is connected in the circuit, which is likely to affect the filtering effect of the first capacitor 14. In this case, by disconnecting the first switch 16 within the second preset time period after the second switch 17 is closed, the charging current of the first capacitor 14 will not be too large in a short period of time, and the connection between the first resistor 11 and the first capacitor 14 can be disconnected in time, thereby minimizing the impact of the first resistor 11 on the filtering effect of the first capacitor 14.

[0076] 1 and 2 , a household appliance 40 according to an embodiment of the present application includes a motor 20 and a filter circuit 10 according to any one of the above embodiments.

[0077] Before starting the motor 20, the household appliance 40 charges the first capacitor 14 by forming a charging circuit. The first resistor 11 connected in series with the first capacitor 14 can reduce the current when charging the first capacitor 14. After a certain amount of charge has been stored in the first capacitor 14, the power supply circuit is formed to supply power to the motor 20. At this time, the current generated by charging the first capacitor 14 is very small and will not damage the first capacitor 14. In addition, the first resistor 11 is not connected to the power supply circuit, which will not affect the filtering effect of the first capacitor 14.

[0078] Specifically, please refer to Figure 1 and Figure 2. When the household appliance 40 needs to control the motor 20 to turn on, the first capacitor 14 can be energized through the first live wire terminal 12 and the neutral wire terminal 15 to pre-charge the first capacitor 14. When the first capacitor 14 meets the preset charging conditions, the motor 20 can be connected through the second live wire terminal 13 and the neutral wire terminal 15. At this time, the motor 20 is controlled to turn on, and the first capacitor 14 is connected in parallel with the motor 20 to filter out voltage interference to the motor 20, and no large charging current will be generated on the first capacitor 14.

[0079] In some embodiments, the household appliances 40 may include a dishwasher, a refrigerator, a microwave, an oven, a washing machine, and an air conditioner.

[0080] Please refer to Figures 1 to 3. A control method according to an embodiment of the present application is used for a household appliance 40. The household appliance 40 includes a filter circuit 10 and a motor 20. The filter circuit 10 includes a first resistor 11 and a first capacitor 14. One end of the first resistor 11 is connected to a first live wire terminal 12, and the other end of the first resistor 11 is connected to a second live wire terminal 13. The first resistor 11 is connected in series with the first capacitor 14. One end of the first capacitor 14 is connected to the second live wire terminal 13, and the other end of the first capacitor 14 is connected to a neutral wire terminal 15. The two ends of the first capacitor 14 respectively form an output terminal 18, and the output terminal 18 is used to connect to the motor 20. The control method includes:

[0081] 01: connect the first live wire terminal 12 and the neutral wire terminal 15 to charge the first capacitor 14;

[0082] 03: When it is determined that the first capacitor 14 meets the preset charging condition, the second live wire terminal 13 and the neutral wire terminal 15 are connected to supply power to the motor 20 through the output terminal 18.

[0083] The control method of the embodiment of the present application can be implemented by a household appliance 40 according to the embodiment of the present application. Specifically, referring to FIG4 , household appliance 40 includes a control module 41. Control module 41 is configured to connect first live terminal 12 and neutral terminal 15 to charge first capacitor 14; and, if first capacitor 14 meets a preset charging condition, connect second live terminal 13 and neutral terminal 15 to power motor 20 via output terminal 18.

[0084] In the above control method, before starting the motor 20, a charging circuit is formed to charge the first capacitor 14. The first resistor 11 connected in series with the first capacitor 14 can reduce the current when charging the first capacitor 14. After a certain amount of charge has been stored in the first capacitor 14, a power supply circuit is formed to power the motor 20. At this time, the current generated by charging the first capacitor 14 is very small and will not damage the first capacitor 14. In addition, the first resistor 11 is not connected to the power supply circuit, which will not affect the filtering effect of the first capacitor 14.

[0085] Specifically, referring to Figures 1, 2, and 4, in the illustrated embodiment, the filter circuit 10 includes a first switch 16 and a second switch 17. The first switch 16 is connected to the first live terminal 12 and can be used to connect or disconnect the first live terminal 12 from the external power supply. The second switch 17 is connected to the second live terminal 13 and can be used to connect or disconnect the second live terminal 13 from the external power supply. The control module 41 can control the first switch 16 to close, thereby connecting the external power supply to the first live terminal 12 and the neutral terminal 15 to charge the first capacitor 14, and can control the first switch 16 to open, thereby disconnecting the external power supply from the first live terminal 12. The control module 41 can control the second switch 17 to close, thereby connecting the external power supply to the second live terminal 13 and the neutral terminal 15 to power the motor 20, and can control the second switch 17 to open, thereby disconnecting the external power supply from the second live terminal 13.

[0086] In some embodiments, the first switch 16 and / or the second switch 17 may include a relay, a bipolar junction transistor (BJT), a field effect transistor (FET), or a metal oxide semiconductor field effect transistor (MOSFET).

[0087] Referring to FIG5 , in some embodiments, the control method includes:

[0088] 02: When it is determined that the first live wire terminal 12 is connected, the motor 20 is controlled to remain in the off state;

[0089] 04: When it is determined that the second live wire terminal 13 is connected, the motor 20 is controlled to enter the on state.

[0090] The control method of the embodiment of the present application can be implemented by the household appliance 40 of the embodiment of the present application. Specifically, referring to FIG4 , the control module 41 is configured to: control the motor 20 to remain in the off state when the first live wire terminal 12 is connected; and control the motor 20 to enter the on state when the second live wire terminal 13 is connected.

[0091] In this way, the starting timing of the motor 20 can be conveniently determined.

[0092] It can be understood that when the first live terminal 12 is connected, the first capacitor 14 is charged, and the motor 20 is controlled to remain in the off state, thereby avoiding the formation of a direct power supply circuit for the motor 20. When the second live terminal 13 is connected, the first capacitor 14 has been substantially fully charged, and the motor 20 is controlled to enter the on state, allowing the first capacitor 14 to filter out voltage interference in the power supply circuit, thereby providing a good power supply environment for the operation of the motor 20.

[0093] In certain embodiments, the control method comprises:

[0094] When the first capacitor 14 meets the preset charging condition, the connection with the first live terminal 12 is disconnected within a second preset time period after the second live terminal 13 is connected.

[0095] The control method of the embodiment of the present application can be implemented by the household appliance 40 of the embodiment of the present application. Specifically, referring to FIG4 , the control module 41 is configured to disconnect the first live terminal 12 from the first capacitor 14 within a second preset time period after the second live terminal 13 is connected, if the first capacitor 14 meets a preset charging condition.

[0096] In this way, the influence of the first resistor 11 on the filtering effect of the first capacitor 14 can be reduced.

[0097] Specifically, please refer to Figures 1 and 2. Based on the aforementioned embodiment, it can be known that the control module 41 can connect the second live wire terminal 13 by closing the second switch 17, and can cut off the connection to the first live wire terminal 12 by opening the first switch 16. The specific implementation principle can be referred to the aforementioned embodiment and will not be repeated here.

[0098] A household appliance 40 according to an embodiment of the present application includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, the steps of the control method according to any of the above embodiments can be implemented.

[0099] For example, when a computer program is executed by a processor, the control methods that can be implemented include:

[0100] 01: connect the first live wire terminal 12 and the neutral wire terminal 15 to charge the first capacitor 14;

[0101] 03: When it is determined that the first capacitor 14 meets the preset charging condition, the second live wire terminal 13 and the neutral wire terminal 15 are connected to supply power to the motor 20 through the output terminal 18.

[0102] Before starting the motor 20, the household appliance 40 charges the first capacitor 14 by forming a charging circuit. The first resistor 11 connected in series with the first capacitor 14 can reduce the current when charging the first capacitor 14. After a certain amount of charge has been stored in the first capacitor 14, the power supply circuit is formed to supply power to the motor 20. At this time, the current generated by charging the first capacitor 14 is very small and will not damage the first capacitor 14. In addition, the first resistor 11 is not connected to the power supply circuit, which will not affect the filtering effect of the first capacitor 14.

[0103] Specifically, please refer to Figure 1 and Figure 2. When the household appliance 40 needs to control the motor 20 to turn on, the first capacitor 14 can be energized through the first live wire terminal 12 and the neutral wire terminal 15 to pre-charge the first capacitor 14. When the first capacitor 14 meets the preset charging conditions, the motor 20 can be connected through the second live wire terminal 13 and the neutral wire terminal 15. At this time, the motor 20 is controlled to turn on, and the first capacitor 14 is connected in parallel with the motor 20 to filter out voltage interference to the motor 20, and no large charging current will be generated on the first capacitor 14.

[0104] In some embodiments, the household appliances 40 may include a dishwasher, a refrigerator, a microwave, an oven, a washing machine, and an air conditioner.

[0105] A computer-readable storage medium according to an embodiment of the present application stores a computer program, which, when executed by a processor, can implement the steps of the control method according to any one of the above embodiments.

[0106] For example, when a computer program is executed by a processor, the control methods that can be implemented include:

[0107] 01: connect the first live wire terminal 12 and the neutral wire terminal 15 to charge the first capacitor 14;

[0108] 03: When it is determined that the first capacitor 14 meets the preset charging condition, the second live wire terminal 13 and the neutral wire terminal 15 are connected to supply power to the motor 20 through the output terminal 18.

[0109] The above-mentioned computer-readable storage medium charges the first capacitor 14 by forming a charging circuit before starting the motor 20. The first resistor 11 connected in series with the first capacitor 14 can reduce the current when charging the first capacitor 14; after a certain amount of charge has been stored in the first capacitor 14, a power supply circuit is formed to power the motor 20. At this time, the current generated by charging the first capacitor 14 is very small and will not damage the first capacitor 14. In addition, the first resistor 11 is not connected to the power supply circuit, which will not affect the filtering effect of the first capacitor 14.

[0110] The computer-readable storage medium may be provided in the home appliance 40 or in other terminals. The home appliance 40 may communicate with other terminals to obtain corresponding programs.

[0111] It is understood that computer-readable storage media may include: any entity or device capable of carrying a computer program, recording media, USB flash drives, mobile hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), and software distribution media. A computer program includes computer program code. The computer program code may be in source code form, object code form, an executable file, or some intermediate form. Computer-readable storage media may include: any entity or device capable of carrying a computer program code, recording media, USB flash drives, mobile hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), and software distribution media.

[0112] In certain embodiments of the present application, the control module 41 may be a single-chip microcomputer chip that integrates a processor, memory, a communication module, etc. The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0113] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that specific features, structures, materials, or characteristics described in conjunction with an embodiment or example are included in at least one embodiment or example of the present application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0114] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A filter circuit for a motor, characterized in that: The filtering circuit comprises: A first resistor, one end of the first resistor is connected to the first live wire terminal, and the other end of the first resistor is connected to the second live wire terminal; and a first capacitor, the first resistor is connected in series with the first capacitor, one end of the first capacitor is connected to the second live wire end, the other end of the first capacitor is connected to the neutral wire end, and both ends of the first capacitor form output ends respectively, and the output ends are used to connect the motor; The filtering circuit is configured to form a charging circuit through the first live wire terminal, the first resistor, the first capacitor and the neutral wire terminal to charge the first capacitor, and to form a power supply circuit through the second live wire terminal, the motor and the neutral wire terminal to power the motor through the output terminal when the first capacitor meets a preset charging condition.

2. The filter circuit according to claim 1, characterized in that: The preset charging conditions include: The duration of charging the first capacitor reaches a first preset duration.

3. The filter circuit according to claim 1 or 2, characterized in that: The filter circuit is connected to one end of a preset power supply through the first live wire terminal and the second live wire terminal, and is connected to the other end of the preset power supply through the neutral wire terminal.

4. The filter circuit according to any one of claims 1 to 3, characterized in that: The filtering circuit comprises: a first switch connected to the first live wire terminal to connect or disconnect a path between the first live wire terminal and a first preset power source; and a second switch, the second switch being connected to the second live wire terminal to switch on or off a path between the second live wire terminal and a second preset power source; The filter circuit is configured to form the charging loop by closing the first switch, and to form the power supply loop by closing the second switch when the first capacitor meets the preset charging condition.

5. The filter circuit according to claim 4, characterized in that: When the first capacitor meets the preset charging condition, the first switch is configured to be opened within a second preset time period after the second switch is closed.

6. A household appliance, characterized in that: include: Motor; and The filter circuit according to any one of claims 1 to 5.

7. A control method for household appliances, characterized in that: The household appliance comprises a filter circuit and a motor, wherein the filter circuit comprises: A first resistor, one end of the first resistor is connected to the first live wire terminal, and the other end of the first resistor is connected to the second live wire terminal; and a first capacitor, the first resistor is connected in series with the first capacitor, one end of the first capacitor is connected to the second live wire end, the other end of the first capacitor is connected to the neutral wire end, and both ends of the first capacitor form output ends respectively, and the output ends are used to connect the motor; The control method comprises: Connecting the first live wire terminal and the neutral wire terminal to charge the first capacitor; When it is determined that the first capacitor meets a preset charging condition, the second live wire terminal and the neutral wire terminal are connected to supply power to the motor through the output terminal.

8. The control method according to claim 7, characterized in that: The control method comprises: When it is determined that the first live wire terminal is connected, controlling the motor to remain in an off state; When it is determined that the second live wire terminal is connected, the motor is controlled to enter an on state.

9. The control method according to claim 7 or 8, characterized in that: The control method comprises: When the first capacitor meets the preset charging condition, the connection with the first live wire terminal is disconnected within a second preset time period after the second live wire terminal is connected.

10. A household appliance, characterized in that: It comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the control method according to any one of claims 7 to 9 can be implemented.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, it can implement the steps of the control method described in any one of claims 7 to 9.

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