KR102662526B1 - Vacuum cleaner and method for controlling thereof - Google Patents

Abstract

The vacuum cleaner starts. This vacuum cleaner includes a drum equipped with brushes, a first motor for rotating the drum, a sensor that detects the load applied to the first motor, a second motor that generates suction pressure, and according to the size of the load detected by the sensor. It includes a processor that controls at least one of the first motor and the second motor.

Description

Vacuum cleaner and control method of vacuum cleaner {VACUUM CLEANER AND METHOD FOR CONTROLLING THEREOF}

The present disclosure relates to a vacuum cleaner and a control method of the vacuum cleaner, and more specifically, to a vacuum cleaner and a control method thereof that can adaptively control the operation of the motor according to the load of the motor that rotates the drum on which the brush is mounted. It's about.

A vacuum cleaner includes a cleaner main body in which a vacuum suction device and a dust collection device are installed, and a suction module connected to the main body. Recently, a rotating brush has been installed in the suction module to easily suction foreign substances from the surface being cleaned.

However, the load applied to the motor that drives the brush varies depending on the environment of the surface being cleaned. In addition, the size of the current supplied to the motor that drives the brush changes depending on the changing load, but there was a problem in that it was not possible to adaptively control the operation of the motor.

The present disclosure is intended to overcome the above-described problems and is to provide a vacuum cleaner and a method of controlling the same that can adaptively control the operation of the motor according to the load of the motor that rotates the drum on which the brush is mounted.

According to an embodiment of the present disclosure for achieving the above-described object, a vacuum cleaner includes a drum equipped with a brush, a first motor for rotating the drum, a sensor for detecting a load applied to the first motor, and a suction pressure It includes a second motor that generates and a processor that controls at least one of the first motor and the second motor according to the size of the load detected by the sensor.

In this case, the processor may reduce the speed of the second motor if the load detected by the sensor is greater than or equal to a first threshold.

Meanwhile, the processor may reduce the speed of the first motor if the load detected by the sensor is greater than or equal to a second threshold value that is less than the first threshold value.

In this case, if the load detected by the sensor is greater than or equal to the second threshold, the processor may reduce the speed of the first motor to 60% to 80% of the current speed.

Meanwhile, if the load detected by the sensor is greater than or equal to the second threshold, the processor may control the first motor to have a speed that is inversely proportional to the size of the load detected by the sensor. .

Meanwhile, the processor may stop the operation of the first motor if the load detected by the sensor is greater than a third threshold value that is greater than the first threshold value.

Meanwhile, the present vacuum cleaner further includes a main body including the second motor, and a suction module detachably mounted from the main body and including the drum and the first motor, and the processor determines the type of the suction module. can be confirmed, and the speed of the second motor can be controlled based on the threshold value corresponding to the confirmed type.

Meanwhile, the vacuum cleaner further includes a user interaction unit, and if the load detected by the sensor is greater than or equal to a first threshold, the user interaction unit provides a notification to guide replacement to a suction module with a relatively lower load than the currently installed suction module. can be provided.

Meanwhile, the vacuum cleaner may further include the second motor and a secondary battery that provides power to the second motor.

Meanwhile, a method of controlling a vacuum cleaner according to an embodiment of the present disclosure includes, when a drive command is input, generating suction pressure using a second motor and rotating a drum on which a brush is mounted using a first motor. , detecting a load applied to the first motor, and controlling at least one of the first motor and the second motor according to the size of the detected load.

In this case, the controlling step may reduce the speed of the second motor if the load detected by the sensor is greater than or equal to a first threshold.

Meanwhile, the controlling step may reduce the speed of the first motor if the load detected by the sensor is greater than a second threshold value that is less than the first threshold value.

In this case, the controlling step may reduce the speed of the first motor to 60% to 80% of the current speed if the load detected by the sensor is greater than the second threshold.

Meanwhile, in the controlling step, if the load detected by the sensor is greater than the second threshold, the first motor is controlled to have a speed that is inversely proportional to the size of the load detected by the sensor. You can.

Meanwhile, in the controlling step, if the load detected by the sensor is greater than a third threshold value that is greater than the first threshold value, the operation of the first motor may be stopped.

1 is a block diagram showing a simplified configuration of a vacuum cleaner according to an embodiment of the present disclosure;
2 is a block diagram showing a specific configuration of a vacuum cleaner according to an embodiment of the present disclosure;
3 is a diagram illustrating the form of a vacuum cleaner of the present disclosure;
Figure 4 is a diagram specifically showing the form of the suction module of Figure 3;
5 is a diagram for specifically explaining the control operation of the first motor of the present disclosure;
6 is a diagram for explaining an example of implementation of a vacuum cleaner equipped with a user interface unit;
7 is a flowchart illustrating a control method of a vacuum cleaner according to an embodiment of the present disclosure, and
8 is a flowchart illustrating in detail a method of controlling a vacuum cleaner according to various embodiments of the present disclosure.

Since these embodiments can be modified in various ways and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the scope to specific embodiments, and should be understood to include various modifications, equivalents, and/or alternatives to the embodiments of the present disclosure. In connection with the description of the drawings, similar reference numbers may be used for similar components.

In describing the present disclosure, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present disclosure, the detailed description thereof will be omitted.

In addition, the following examples may be modified into various other forms, and the scope of the technical idea of the present disclosure is not limited to the following examples. Rather, these embodiments are provided to make the present disclosure more faithful and complete and to completely convey the technical idea of the present disclosure to those skilled in the art.

The terms used in this disclosure are merely used to describe specific embodiments and are not intended to limit the scope of rights. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present disclosure, expressions such as “have,” “may have,” “includes,” or “may include” refer to the presence of the corresponding feature (e.g., component such as numerical value, function, operation, or part). , and does not rule out the existence of additional features.

In the present disclosure, expressions such as “A or B,” “at least one of A or/and B,” or “one or more of A or/and B” may include all possible combinations of the items listed together. . For example, “A or B,” “at least one of A and B,” or “at least one of A or B” (1) includes at least one A, (2) includes at least one B, or (3) it may refer to all cases including both at least one A and at least one B.

Expressions such as “first,” “second,” “first,” or “second,” used in the present disclosure can modify various components regardless of order and/or importance, and can refer to one component. It is only used to distinguish from other components and does not limit the components.

A component (e.g., a first component) is “(operatively or communicatively) coupled with/to” another component (e.g., a second component). When referred to as being “connected to,” it should be understood that any component may be directly connected to the other component or may be connected through another component (e.g., a third component). On the other hand, when a component (e.g., a first component) is said to be “directly connected” or “directly connected” to another component (e.g., a second component), It may be understood that no other component (e.g., a third component) exists between other components.

The expression “configured to” used in the present disclosure may mean, for example, “suitable for,” “having the capacity to,” depending on the situation. ," can be used interchangeably with "designed to," "adapted to," "made to," or "capable of." The term “configured (or set to)” may not necessarily mean “specifically designed to” in hardware.

Instead, in some contexts, the expression “a device configured to” may mean that the device is “capable of” working with other devices or components. For example, the phrase "processor configured (or set) to perform A, B, and C" refers to a processor dedicated to performing the operations (e.g., an embedded processor), or by executing one or more software programs stored on a memory device. , may refer to a general-purpose processor (e.g., CPU or application processor) capable of performing the corresponding operations.

In an embodiment, a 'module' or 'unit' performs at least one function or operation, and may be implemented as hardware or software, or as a combination of hardware and software. In addition, a plurality of 'modules' or a plurality of 'units' are integrated into at least one module and implemented with at least one processor (not shown), except for 'modules' or 'units' that need to be implemented with specific hardware. It can be.

Hereinafter, the present disclosure will be described in detail using the attached drawings.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement it. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts unrelated to the description are omitted, and similar parts are given similar reference numerals throughout the specification.

Figure 1 is a block diagram showing a simplified configuration of a vacuum cleaner 100 according to an embodiment of the present disclosure.

Referring to FIG. 1 , the vacuum cleaner 100 may include a first motor 110, a second motor 120, a sensor 130, and a processor 140. This vacuum cleaner 100 may be a canister type in which the suction module is provided separately from the main body and connected by an extension pipe, or it may be an upright type in which the suction module is formed integrally with the main body. Additionally, the vacuum cleaner 100 may be of various types, such as a wireless control cleaner, a robot cleaner, or a handheld cleaner.

The first motor 110 rotates the drum on which the brush is mounted. Specifically, when a drive command for the first motor 110 is input and power is supplied to the first motor 110, the drum on which the brush is mounted rotates by driving the first motor 110. This first motor 110 may be a variety of motors, such as a DC motor (Direct Current electric motor), AC motor (Alternating Current electric motor), or BLDC (brushless DC electric motor) motor.

The drum rotates by driving the first motor 110. Specifically, the drum may rotate using the kinetic energy of the first motor 110, and the drum may have a cylindrical shape. Meanwhile, the drum may be equipped with brushes to form one or more spiral traces along its outer peripheral surface.

The brush is formed to protrude out of the suction port by a certain length, so that when the drum rotates, it strikes foreign substances such as dust, dirt, and hair that stick to the surface being cleaned. As a result, foreign substances are separated from the surface being cleaned and can be easily sucked in through the suction port. These brushes may be made of a material with a low coefficient of friction and good wear resistance, such as natural bristles or PA (Polyamide: Nylon), but are not necessarily limited thereto.

Meanwhile, the specific form of the first motor, drum, brush, and suction port as above is shown in FIG. 4.

Meanwhile, the load applied to the first motor 110 varies depending on the type of surface to be cleaned, and the size of the current supplied to the first motor 110 varies accordingly.

For example, when the surface to be cleaned is a carpet compared to a case where the surface to be cleaned is a floor, the load applied to the first motor 110 increases, and the magnitude of the current flowing through the first motor 110 increases accordingly. . Even when the surface to be cleaned is the same as a carpet, if the carpet bristles are long and made of a material with a high friction coefficient, the size of the current flowing through the first motor 110 becomes relatively larger than in the other case.

The sensor 130 can detect the load applied to the first motor 110 and can also detect the first current according to the load. Specifically, the sensor 130 may detect the amount of current supplied to the first motor 110 based on the voltage value across the resistance of the first motor 110. In addition, a method of detecting the current of the first motor 110 by installing a Hall sensor 130 using Hall voltage can be used, and various other types of sensors 130 can be used.

The second motor 120 generates suction pressure. Specifically, when a drive command for the second motor 120 is input and power is supplied to the second motor 120, the impeller rotates by driving the second motor 120. Suction pressure is formed by the rotation of the impeller, and air containing foreign substances is sucked into the suction port by this suction pressure. At this time, as the speed of the second motor 120 increases, the suction pressure increases.

The processor 140 controls the overall operation of the vacuum cleaner 100. The processor 140 controls the operation of the vacuum cleaner 100 based on the user's driving command.

In this case, the processor 140 may selectively control whether to drive the first motor 110. That is, based on the user's drive command, the processor 140 performs the function of rotating the brush installed on the drum according to the driving of the first motor and the function of suctioning foreign substances based on the suction pressure according to the driving of the second motor. It can also be controlled to perform an auxiliary role.

Additionally, the processor 140 can adjust the suction power of the vacuum cleaner 100. Specifically, the processor 140 may adjust the size of the suction pressure generated by the second motor 120 based on the user's manipulation of the suction power control unit. Additionally, as will be discussed below, the processor 140 can control various components within the vacuum cleaner 100, such as the first motor 110 and the second motor 120.

Meanwhile, as described above, the load applied to the first motor 110 varies depending on the type of surface to be cleaned, and the size of the current supplied to the first motor 110 varies accordingly.

For example, when the amount of current supplied to the first motor 110 increases, the temperature of the first motor 110 increases, raising the possibility that the first motor 110 may be damaged. If the operation of the first motor 110 is stopped for a certain period of time considering this possibility, in order to drive the first motor 110 again, the user presses the power button to stop the operation of the entire vacuum cleaner, and then presses the power button again. You have to endure the inconvenience of having to press to start it again.

In order to overcome the above problem, the processor 140 according to the present disclosure controls at least one of the first motor 110 and the second motor 120 according to the size of the load detected by the sensor 130.

Hereinafter, a specific control process performed by the processor 140 when the load detected by the sensor 130 is greater than the first threshold, second threshold, or third threshold, and is less than the above threshold. This is explained in detail.

Here, the first threshold may be a value corresponding to 50% of the size of the load detectable by the sensor 130, and the second threshold smaller than the first threshold is the size of the load detectable by the sensor 130. It may be a value corresponding to 30% of , and the second threshold value greater than the first threshold value may be a value corresponding to 70% of the size of the load detectable by the sensor 130.

However, the above figures are illustrative, and the size of the load corresponding to a specific threshold may vary depending on the first motor 110 used and various other factors. Therefore, this threshold value is not limited to a specific value.

If the load detected by the sensor 130 is greater than or equal to the first threshold, the processor 140 may reduce the speed of the second motor 120.

Specifically, the processor 140 may adjust the voltage applied to the second motor 120 to reduce the speed of the second motor 120. For example, the processor 140 may reduce the speed of the second motor 120 by adjusting the size and frequency of a sine wave for the voltage applied to the second motor 120.

However, of course, in addition to the above methods, various methods of reducing the speed of the second motor 120 can be applied to the present disclosure, and specific details regarding reducing the speed of the second motor 120 are provided in the second motor 120. The same can be applied to control of speed increase.

Meanwhile, as the speed of the second motor 120 increases, the suction pressure increases, so that the brush and the surface to be cleaned come into strong contact, and the load applied to the first motor 110 increases accordingly, but the speed of the second motor 120 increases. As decreases, the adhesion between the brush and the surface being cleaned decreases and the applied load decreases. Therefore, by reducing the speed of the second motor 120, it is possible to reduce the amount of current supplied to the first motor 110.

Meanwhile, the processor 140 may reduce the speed of the first motor 110 if the load detected by the sensor 130 is greater than or equal to a second threshold value that is less than the first threshold value. The control operation of this first motor 110 will be described in detail in the description of FIG. 5.

Meanwhile, if the processor 140 excessively reduces the speed of the first motor 110 when the load detected by the sensor 130 is greater than or equal to the second threshold, the effect of driving the first motor 110 is significant. may decrease significantly. Therefore, it is desirable for the processor 140 to reduce the speed of the first motor 110 within a range that can reduce the current supplied to the first motor 110 while maintaining the rotational force of the first motor 110. You can.

According to an embodiment that takes this into account, if the load detected by the sensor 130 is greater than or equal to the second threshold, the processor 140 reduces the speed of the first motor 110 to 60% to 80% of the current speed. You can do it.

However, the above speed reduction range is an example and may vary depending on the first motor 110 used and various other factors. Therefore, this reduction range is not limited to a specific numerical range.

Meanwhile, if the load detected by the sensor 130 is greater than or equal to the second threshold, the processor 140 sets the speed of the first motor 110 to be inversely proportional to the size of the load detected by the sensor 130. The motor 110 can be controlled.

For example, if the load detected by the sensor 130 is greater than or equal to the second threshold, the processor 140 may reduce the speed of the first motor 110 to 80% of the current speed, and the size of the detected load may be reduced to 80% of the current speed. It may be continuously decreased from 100% to 80% in inverse proportion to the increase.

Meanwhile, despite the control of the processor 140 as described above, there may be cases where the size of the detected load continues to increase, and in this case, it may be desirable to stop driving the first motor 110.

Accordingly, the processor 140 may stop driving the first motor 110 when the load detected by the sensor 130 is greater than the third threshold value, which is greater than the first threshold value.

Meanwhile, according to an embodiment of the present disclosure, the processor 140 may perform control at the same time that the load detected by the sensor 130 exceeds a certain threshold, and a certain time has elapsed after the load detected by the sensor 130 exceeds a certain threshold. Control can also be performed later.

For example, the processor 140 may stop driving the first motor 110 at the same time that the load detected by the sensor 130 exceeds the third threshold, and the load detected by the sensor 130 becomes the third threshold. If the value does not fall below the third threshold for 5 seconds after becoming more than the third threshold, the driving of the first motor 110 may be stopped.

Meanwhile, there is no specific order among the control processes according to the present disclosure. For example, if the load detected by the sensor 130 is greater than or equal to the second threshold, the processor 140 first reduces the speed of the first motor 110 and, nevertheless, the load detected by the sensor 130 is lower than the second threshold. If the first threshold value is greater than the 2 threshold value, the speed of the second motor 120 may be reduced.

However, according to another embodiment of the present disclosure, the processor 140 first reduces the speed of the second motor 120 when the load detected by the sensor 130 is greater than the second threshold, and nevertheless, the sensor ( If the load detected in 130) is greater than the first threshold value, the speed of the first motor 110 may be reduced.

In the above, the control operation of the processor 140 when a load exceeding a certain threshold is detected in the sensor 130 has been described. However, as will be discussed below, when a load less than a certain threshold is detected in the sensor 130, In this case, the processor 140 may control at least one of the first motor 110 and the second motor 120.

That is, when a load exceeding a certain threshold is detected by the sensor 130, the processor 140 reduces the speed of the first motor 110 or the speed of the second motor 120 or stops driving the first motor 110. After stopping, if the sensor 130 detects a load below a certain threshold, the processor 140 needs to control the first motor 110 or the second motor 120 again.

According to an embodiment of the present disclosure, the processor 140 may drive the first motor 110 when the load detected by the sensor 130 is less than the third threshold.

Specifically, after the load detected by the sensor 130 exceeds the third threshold and the processor 140 stops driving the first motor 110, the load detected by the sensor 130 again exceeds the third threshold. If the value is less than the value, the processor 140 may re-drive the first motor 110 that was stopped.

However, if the load detected by the sensor 130 has not exceeded the third threshold and the first motor 110 is already driving, the processor 140 may not perform special control.

Meanwhile, the processor 140 may increase the speed of the second motor 120 if the load detected by the sensor 130 is less than the first threshold.

Specifically, after the load detected by the sensor 130 exceeds the first threshold and the processor 140 reduces the speed of the second motor 120, the load detected by the sensor 130 again exceeds the first threshold. If it falls below the value, the speed of the second motor 120, which had been reduced, may be increased.

However, if the load detected by the sensor 130 does not exceed the first threshold and the speed of the second motor 120 does not decrease, the processor 140 may not perform special control.

Meanwhile, the processor 140 may increase the speed of the first motor 110 if the load detected by the sensor 130 is less than the second threshold.

Specifically, after the load detected by the sensor 130 becomes more than the second threshold and the processor 140 reduces the speed of the first motor 110, the load detected by the sensor 130 increases again to the second threshold. If it is less than the value, the speed of the first motor 110, which had been reduced, can be increased.

However, if the load detected by the sensor 130 does not exceed the second threshold and the speed of the first motor 110 does not decrease, the processor 140 may not perform special control.

Meanwhile, according to an embodiment of the present disclosure, the processor 140 may perform control at the same time that the load detected by the sensor 130 falls below a certain threshold, and a certain time elapses after the load detected by the sensor 130 falls below a certain threshold. You can also perform control after doing this.

For example, the processor 140 may stop driving the first motor 110 at the same time that the load detected by the sensor 130 becomes less than the third threshold, and the load detected by the sensor 130 becomes less than the third threshold. After the value becomes less than the third threshold, if the value does not exceed the third threshold for 5 seconds, the driving of the first motor 110 may be stopped.

Meanwhile, there is no specific order among the control processes according to the present disclosure. For example, if the load detected by the sensor 130 is less than the first threshold, the processor 140 first reduces the speed of the second motor 120 and, nevertheless, the load detected by the sensor 130 is lower than the first threshold. If the second threshold value is less than the 1 threshold value, the speed of the first motor 110 may be reduced.

However, according to another embodiment of the present disclosure, the processor 140 first reduces the speed of the first motor 110 when the load detected by the sensor 130 is less than the first threshold, and nevertheless, the sensor ( If the load detected in 130) is less than the second threshold value, the speed of the second motor 120 may be reduced.

In the above description, only the simple configuration of the vacuum cleaner 100 has been described, but the vacuum cleaner 100 may additionally include a configuration as shown in FIG. 2 . The specific configuration of the vacuum cleaner 100 will be described below with reference to FIG. 2.

Figure 2 is a block diagram showing a specific configuration of a vacuum cleaner 100 according to an embodiment of the present disclosure.

Referring to FIG. 2, the vacuum cleaner 100 according to this embodiment includes a first motor 110, a second motor 120, a sensor 130, a processor 140, a manipulation input unit 160, and a user interface unit. (170), and may include a battery (150).

Since the configurations of the first motor 110, the second motor 120, and the sensor 130 are the same as those in FIG. 1, duplicate descriptions will be omitted.

The manipulation input unit 160 includes a power button, a suction power control unit, etc., and can receive user manipulation of the vacuum cleaner 100.

Specifically, the user can input a driving command for the vacuum cleaner 100 through the power button, and the user can also selectively manipulate whether or not the first motor 110 is driven. That is, the user can operate the function of rotating the brush installed on the drum according to the driving of the first motor to play an auxiliary role to the function of suctioning foreign substances based on the suction pressure according to the driving of the second motor.

Additionally, the user may operate the suction power controller to adjust the amount of suction pressure generated by the second motor 120.

The user interface unit 170 is configured to interact with the user of the vacuum cleaner 100. In particular, the user interface unit 170 may include an indicator, and may also include a vibration device, a voice output device, etc. Specific embodiments related to this will be described in detail along with the description of FIG. 6.

Meanwhile, the processor 140 may control each component of the vacuum cleaner 100 based on the user input input through the manipulation input unit 160. Additionally, the processor 140 can control the user interface unit 170 and also receive user interaction input from the user interface unit 170.

The processor 140 may include ROM, RAM, GPU (Graphics Processing Unit), CPU, and bus. Also, ROM, RAM, GPU (Graphics Processing Unit), CPU, etc. can be connected to each other through a bus.

Meanwhile, the vacuum cleaner 100 according to the present disclosure includes a battery 150, and power can be supplied to each component within the vacuum cleaner 100 through the battery 150. Specifically, the battery 150 may supply power to the first motor 110, the second motor 120, the sensor 130, the processor 140, the manipulation input unit 160, and the user interface unit 170. .

According to an embodiment of the present disclosure, the vacuum cleaner 100 may further include a secondary battery that provides power to the first motor 110 and the second motor 120.

Here, the secondary battery may be a nickel cadmium (NiCd) battery, a nickel hydride (NiMH) battery, a lithium ion (Li-ion) battery, a lithium ion polymer (Li-ion polymer) battery, etc., but is not limited to these types.

As described above, the vacuum cleaner 100 according to this embodiment can adaptively control the operation of the motor according to the load of the motor that rotates the drum on which the brush is mounted. Accordingly, users of the vacuum cleaner 100 can clean efficiently without inconvenience regardless of the usage environment according to the various surfaces to be cleaned, and also reduce the incidence of malfunctions of the vacuum cleaner 100.

FIG. 3 is a diagram illustrating the form of the vacuum cleaner 100 of the present disclosure.

As shown in FIG. 3, the vacuum cleaner 100 of the present disclosure includes a main body 20 including a second motor 120 and an impeller rotated by the second motor 120, and a main body 20 connected to the main body 20. It may include a suction module 30, and a handle unit 10 including a manipulation input unit 160 and a user interface unit 170.

Since the configuration of the handle portion 10 and the main body 20 has been discussed in the description of FIG. 2, redundant description will be omitted, and the detailed form of the suction module 30 will be examined in detail with reference to FIG. 4.

Meanwhile, in FIG. 3, a handy-stick type vacuum cleaner 100 is shown as an example among various types of vacuum cleaners 100, but the present disclosure is not limited to a specific type of vacuum cleaner 100. That is, the present disclosure can be implemented in various types of vacuum cleaners 100 including a first motor 110 for rotating a drum on which brushes are mounted and a second motor 120 for generating suction pressure.

FIG. 4 is a diagram specifically showing the form of the suction module 30 of FIG. 3.

As shown in FIG. 4, the suction module 30 includes an intake port 31 through which air containing foreign substances is sucked, a drum 32 rotated by a first motor 110, and a brush mounted on the drum 32. (33), and may include a first motor 110 that rotates the drum 32 on which the brush 33 is installed. The description of each of these components has been described above in the description of FIG. 1, so duplicate descriptions will be omitted.

On the other hand, there are various types of suction module 30 according to its purpose, such as general type and bedding type, and among them, the type that can be equipped with the brush 33, drum 32, and first motor 110 is disclosed herein. Can be applied to various embodiments.

And even in the case of the suction module 30 for the same purpose, the length or material of the brush 33 included therein may vary. Additionally, the position where the brush 33 is installed in the suction module 30 can be selected in various ways.

Accordingly, the size of the load that a specific suction module 30 has on the same surface to be cleaned may vary depending on the length, material, and installation location of the selected brush 33. In other words, the size of the load applied to the first motor 110 and the size of the corresponding current may not only vary depending on the type of surface to be cleaned, but may also vary depending on the type of suction module 30.

According to an embodiment of the present disclosure, the vacuum cleaner 100 is detachably mounted on the main body 20 and includes a drum 32 equipped with a brush 33 and a suction motor 110. It may further include a module 30, and the processor 140 may check the type of the suction module 30 and control the speed of the second motor 120 based on the threshold value corresponding to the confirmed type. there is.

Meanwhile, in relation to this, an embodiment of providing a notification guiding the user to replace the suction module 30 will be described in detail in the description of FIG. 6.

FIG. 5 is a diagram for specifically explaining the control operation of the first motor 110 of the present disclosure.

As described above, the processor 140 may reduce the speed of the first motor 110 if the load detected by the sensor 130 is greater than or equal to the second threshold value that is less than the first threshold value.

Referring to FIG. 5, the processor 140 controls the first motor 110 through a PI controller (Proportional Integral Controller) under a feedback system based on the current value of the first motor 110 calculated according to the voltage across the resistor. ) can be controlled. In addition, this makes it possible to control the size of the current supplied to the first motor 110 and the speed of the first motor 110.

For example, if the load detected by the sensor 130 is greater than or equal to the first threshold, the processor 140 may reduce the voltage duty value applied to the first motor 110 to 70%. This voltage duty value can be determined within a range that can reduce the current supplied to the first motor 110 while maintaining the rotational force of the first motor 110.

Additionally, if the load detected by the sensor 130 is greater than or equal to the first threshold, the processor 140 may reduce the voltage duty value applied to the first motor 110 to 70%, and the size of the detected load may be reduced to 70%. It can also be decreased continuously from 100% to 70% in inverse proportion to the increase.

However, the above reduction range of voltage duty is an example and may vary depending on the first motor 110 used and various other factors. Therefore, this reduction range is not limited to a specific numerical range.

In addition, of course, various methods other than the method of reducing the voltage duty by reducing the speed of the first motor 110 can be applied to the present disclosure, and detailed information regarding the speed reduction of the first motor 110 is provided in the present disclosure. 1 The same can be applied to control of the speed increase of the motor 110.

FIG. 6 is a diagram for explaining an implementation example of the vacuum cleaner 100 equipped with the user interface unit 170.

Referring to FIG. 6 , the handle portion 10 of the vacuum cleaner 100 may include an indicator 12 corresponding to one of the power button 11 and the user interface portion 170. Although not shown, the user interface unit 170 may include not only the indicator 12, but also a vibration device, a voice output device, etc.

As described above, the suction module 30 is detachable from the main body 20, and the size of the load applied to the first motor 110 and the corresponding current vary depending on the type of the suction module 30. It may vary. Additionally, information about the load for each suction module 30 may be provided to the user in advance.

Therefore, if the load detected by the sensor 130 is above or below a certain threshold, a notification is provided guiding the user to replace the suction module 30, and the user selects the suction module 30 suitable for the usage environment. By replacing, the purpose of the present disclosure can be achieved.

According to an embodiment according to the present disclosure, the vacuum cleaner 100 further includes a user interface unit 170, and if the load detected by the sensor 130 is greater than or equal to the first threshold, the user interface unit 170 ) may provide a notification guiding replacement of the suction module 30 with a relatively less load than the currently mounted suction module 30.

Meanwhile, such notifications can be implemented in a way that visually provides information to the user through display.

For example, as shown in FIG. 6, the vacuum cleaner 100 further includes an indicator 12 at a location that is easily visually recognized by the user, such as the top of the handle 10, and determines whether the indicator 12 is lit. Alternatively, a notification guiding the user to replace the suction module 30 may be provided through a lighted color, etc. Such an indicator 12 may be an LED indicator, but is not limited to that type.

Meanwhile, the above visual information may be provided in such a way that the vacuum cleaner 100 further includes a display unit and displays text guiding replacement of the suction module 30 through the display unit.

Meanwhile, such notifications may be implemented in a way that tactile information is provided to the user through vibration.

For example, the vacuum cleaner 100 is further equipped with a vibration device at a location that is easily tactilely recognized by the user, such as the top of the handle 10, and transmits specific vibration to the user through this, thereby replacing the suction module 30. A notification can be provided to guide you to do so.

Meanwhile, such notifications may also be implemented in a way that provides auditory information to the user through voice.

For example, the vacuum cleaner is further equipped with a voice output device at a location that is easily recognized by the user, such as the top of the handle 10, and through this, a specific voice is transmitted to the user to guide the user to replace the suction module 30. A notification can be provided.

Figure 7 is a flowchart for explaining a control method of the vacuum cleaner 100 according to an embodiment of the present disclosure.

First, when a drive command is input to the vacuum cleaner 100, suction pressure is generated using the second motor 120 (S710), and the drum 32 on which the brush 33 is mounted is operated by the first motor 110. Rotate it using (S720).

Then, the load applied to the first motor 110 is detected (S730), and at least one of the first motor 110 and the second motor 120 is controlled according to the size of the detected load (S740). A detailed description of these control steps will be described with reference to FIG. 8.

FIG. 8 is a flowchart illustrating in detail a control method of the vacuum cleaner 100 according to various embodiments of the present disclosure. That is, the following describes the step (S720) of controlling at least one of the first motor and the second motor according to the load detected in the step (S710) of detecting the load applied to the first motor described in FIG. 7. Thus, various embodiments will be described.

Specifically, according to an embodiment of the present disclosure, if the sensed load is greater than or equal to the first threshold (S810), the speed of the second motor 120 may be reduced (S820). And, if the sensed load is greater than the second threshold value that is smaller than the first threshold value (S830), the speed of the first motor 110 may be reduced (S840). Additionally, if the sensed load is greater than the third threshold value (S850), the driving of the first motor 110 may be stopped (S860).

Meanwhile, if the sensed load is less than the third threshold (S850), the first motor 110 can be driven (S870). And, if the sensed load is less than the first threshold (S830), the speed of the second motor 120 can be increased (S880). Additionally, if the sensed load is less than the second threshold (S810), the speed of the first motor 110 may be increased (S890).

Meanwhile, as described above in the description of the processor 140 of the vacuum cleaner 100, if the detected load has never exceeded a certain threshold before falling below the certain threshold, special control may not be performed. It may be possible.

For example, if the detected load is greater than the third threshold and the driving of the first motor 110 has never been stopped, special control may not be performed even if the sensed load is less than the third threshold.

Meanwhile, although not shown, the control method of the vacuum cleaner 100 according to the present disclosure reduces the speed of the first motor 110 to 60% to 80% of the current speed when the sensed load is greater than the second threshold. can

Meanwhile, if the sensed load is greater than or equal to the second threshold, the first motor 110 may be controlled to have a speed inversely proportional to the size of the sensed load.

In explaining the control method of the vacuum cleaner 100 above, the meaning of the threshold used, the meaning of above and below the threshold, the speed decrease and increase of the first motor, the speed decrease and increase of the second motor, the first Since control of whether or not the motor is driven has already been described above, redundant explanation will be omitted.

In addition, the control method of the vacuum cleaner 100 according to the present disclosure may be implemented in various other embodiments, but a detailed description thereof will also be described in detail in the process of explaining the processor 140 of the vacuum cleaner 100 according to the present disclosure. Therefore, redundant explanation is omitted.

As described above, according to the control method of the vacuum cleaner 100 according to the present embodiment, the operation of the motor can be adaptively controlled according to the load of the motor that rotates the drum 32 on which the brush 33 is mounted. . Accordingly, users of the vacuum cleaner 100 can clean efficiently without inconvenience regardless of the usage environment according to the various surfaces to be cleaned, and also reduce the incidence of malfunctions of the vacuum cleaner 100.

The control method of the vacuum cleaner 100 shown in FIGS. 7 and 8 can be executed on the vacuum cleaner 100 having the configuration of FIG. 1 or 2, and can also be executed on the vacuum cleaner 100 having other configurations.

Meanwhile, the control method of the vacuum cleaner 100 according to the above-described embodiment may be implemented as a program and provided to the vacuum cleaner 100. In particular, a program including a control method for the vacuum cleaner 100 may be stored and provided in a non-transitory computer readable medium.

In addition, although the preferred embodiments of the present disclosure have been shown and described above, the present disclosure is not limited to the specific embodiments described above, and the technical field to which the disclosure pertains without departing from the gist of the present disclosure as claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be understood individually from the technical idea or perspective of the present disclosure.

100: vacuum cleaner 110: first motor
120: second motor 130: sensor
140: Processor 150: Battery
160: operation input unit 170: user interface unit
10: Handle 11: Power button
12: indicator 20: body
30: Suction module 31: Suction port
32: drum 33: brush

Claims (15)

In the vacuum cleaner 100,
A module 30 including a first motor 120 that generates suction pressure, a drum 32 including a brush 33, and a second motor 110 that rotates the drum 32 is detachable. A main body 20 mounted to enable;
A sensor 130 that detects a load applied to the second motor 110; and
While the module 30 performs a cleaning operation, a signal corresponding to the load applied to the second motor 110 is obtained through the sensor 130,
Identifying the type of module 30 mounted on the main body 20,
A processor 140 that controls the speed of the first motor 120 based on whether the load applied to the second motor 110 exceeds a threshold value corresponding to the identified type of the module 30. ); Vacuum cleaner, including.
According to claim 1,
The processor 140,
If the identified module 30 is a preset first module, the speed of the first motor 120 is controlled based on whether the load applied to the second motor 110 exceeds the first threshold value. do,
If the identified module 30 is a preset second module, based on whether the load applied to the second motor 110 exceeds a second threshold value greater than the first threshold value, the first motor 110 Vacuum cleaner (100) controlling the speed of (120).
According to claim 1,
The processor 140,
If the type of module 30 mounted on the main body 20 is identified as a preset type, and the load applied to the second motor 110 based on the signal is identified as being greater than or equal to a preset first threshold value, , a vacuum cleaner 100 that reduces the speed of the first motor 120.
According to claim 1,
The module 30 is selected from a plurality of modules customized for each of a plurality of surfaces to be cleaned,
The processor 140,
A vacuum cleaner (100) that controls the rotation speed of the first motor according to the module (30) mounted on the main body (20).
According to clause 3,
The processor 140,
If the load is less than the first threshold value and is greater than a third threshold value less than the first threshold value, the vacuum reduces the speed of the first motor 120 while reducing the speed of the second motor 110. Vacuum cleaner (100).
According to clause 5,
The processor 140,
If the load is above the third threshold, the vacuum cleaner (100) reduces the speed of the second motor (110) to 60% to 80% of the current speed.
According to claim 1,
The sensor 130 is a vacuum cleaner 100 that detects a load applied to the first motor 120 based on the magnitude of the current supplied to the first motor 120.
According to clause 3,
The processor 140,
The vacuum cleaner (100) stops driving the second motor (110) when the load is greater than a fourth threshold value that is greater than the first threshold value.
In the control method of the vacuum cleaner 100,
The vacuum cleaner 100,
A module 30 including a first motor 120 that generates suction pressure, a drum 32 including a brush 33, and a second motor 110 that rotates the drum 32 is detachable. It includes a sensor 130 that detects a load applied to the main body 20 and the second motor 110, which is mounted so as to be possible,
The control method of the vacuum cleaner 100 is:
Obtaining a first signal corresponding to a load applied to the second motor 110 through the sensor 130 while the module 30 performs a cleaning operation;
Identifying the type of module 30 mounted on the main body 20;
controlling the speed of the first motor (120) based on whether the load applied to the second motor (110) exceeds a threshold value corresponding to the identified type of module (30); A control method of a vacuum cleaner 100 including.
According to clause 9,
The step of controlling the speed of the first motor 120 is,
If the identified module 30 is a preset first module, the speed of the first motor 120 is controlled based on whether the load applied to the second motor 110 exceeds the first threshold value. steps; and
If the identified module 30 is a preset second module, based on whether the load applied to the second motor 110 exceeds a second threshold value greater than the first threshold value, the first motor 110 controlling the speed of 120; A control method of a vacuum cleaner 100 including.
According to clause 9,
The step of controlling the speed of the first motor 120 is,
If the type of module 30 mounted on the main body 20 is identified as a preset type, and the load applied to the second motor 110 based on the signal is identified as being greater than or equal to a preset first threshold value, , A control method of the vacuum cleaner 100 that reduces the speed of the first motor 120.
According to clause 9,
selecting the module 30 from among a plurality of modules customized for each of the plurality of surfaces to be cleaned; and
Controlling the rotation speed of the first motor 120 according to the module 30 mounted on the main body 20; A control method of the vacuum cleaner 100 further comprising:
According to claim 11,
If the load is less than the first threshold value and is greater than a third threshold value less than the first threshold value, reducing the speed of the second motor 110 while reducing the speed of the first motor 120. ; A control method of the vacuum cleaner 100 further comprising:
According to claim 11,
If the load is greater than a fourth threshold value greater than the first threshold value, stopping driving of the second motor 110; A control method of the vacuum cleaner 100 further comprising: delete

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