KR20180082025A - Vacuum cleaner and control method for the same - Google Patents

Abstract

The present invention relates to a vacuum cleaner including a main body, a first driving motor provided in the main body to generate a suctioning force, a first suction unit rotatably connected to the lower side of the main body and placed on a floor surface, a second driving motor for driving a brush module provided at a suction port of the first suction unit, a first detection unit detecting one of an upright mode in which the main body is operated upright with respect to the first suction unit and a floor cleaning mode in which the main body is operated inclined with respect to the first suction unit, and a control unit controlling the power consumption of the first and second driving motors in accordance with the operation mode detected by the first detection unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner and a vacuum cleaner,

The present invention relates to a vacuum cleaner and a control method of the vacuum cleaner.

Background Art Generally, a vacuum cleaner sucks air containing foreign substances such as dust and hair by using a suction force generated by a suction motor mounted inside a main body, and then filters foreign substances inside the main body.

The vacuum cleaner includes a canister system in which a suction nozzle for sucking foreign substances on the bottom surface is provided separately from the main body and is connected by a connecting device, an up-right method in which the suction nozzle is integrally formed with the main body ≪ / RTI >

The vacuum cleaner of the conventional upright type can clean the floor surface since the suction nozzle performs cleaning while moving on the bottom surface, but a space other than the bottom surface, for example, a staircase or a space of a predetermined height, There was no problem.

Accordingly, the present applicant has made a patent application (hereinafter referred to as prior art) to solve the problem of the conventional upright type vacuum cleaner. The information of the preceding documents is as follows.

One. Publication No. (Published Date): Published Patent Application No. 10-2012-0032092 (Apr. 05, 2012)

2. Title: Upright vacuum cleaner

The upright vacuum cleaner disclosed in the prior art includes a main body having a suction motor for generating a suction force, a first suction unit provided at a lower end of the main body, a second suction unit detachably provided to the main body, A flow path switching device provided between the suction motor, the first suction unit and the second suction unit to selectively communicate the suction motor with the first suction unit or the second suction unit, And a lever member which is provided outside the apparatus and which is rotated at a predetermined angle so as to selectively communicate the suction motor with the first suction unit or the second suction unit.

According to the upright vacuum cleaner of the prior art, the user can remove the foreign matter on the floor surface by using the first suction unit, and remove the foreign matter in the space other than the floor surface by using the second suction unit.

Meanwhile, the upright type vacuum cleaner of the prior art may be provided with a brush assembly installed at one side of the first suction unit to blow dust, foreign matter, etc. from the floor. The brush assembly may include a brush provided with a brush for brushing off foreign objects on the floor, and a brush motor for rotating the brush.

When the user uses the first suction unit, the suction motor and the brush motor can be operated. The brush motor may be turned on / off by a user. For example, a user can generally operate a brush motor to remove carpets or foreign matter adhering to the floor surface, where the foreign matter is not well removed.

In the upright vacuum cleaner of the prior art, the suction motor is operated with fixed power consumption regardless of whether the brush motor is driven or not. Therefore, although the power consumption of the suction motor is increased to provide better performance, the suction motor is operated with fixed power consumption, and the cleaning efficiency can not satisfy the expectation of the customer.

In order to solve the above problems, an object of the present invention is to provide a vacuum cleaner and a vacuum cleaner control method capable of improving the cleaning performance by controlling the output to at least one of a plurality of motors within a set power consumption It is in the suggestion.

It is still another object of the present invention to provide a vacuum cleaner and a vacuum cleaner control method capable of improving the cleaning performance by controlling the power consumption of either the suction motor or the brush motor based on the speed of the suction motor And the like.

According to an aspect of the present invention, there is provided a vacuum cleaner including a main body, a first driving motor provided in the main body, for generating a suction force, And includes a first suction unit and a second drive motor for driving the brush module provided at the suction port of the first suction unit.

The vacuum cleaner senses any one of an upright mode in which the main body is operated in a standing state with respect to the first suction unit and a floor cleaning mode in which the main body is operated in an inclined state with respect to the first suction unit And a control unit for controlling power consumption of the first drive motor and the second drive motor according to the operation mode sensed by the first sensing unit.

In the floor cleaning mode, the first drive motor is driven with a first power consumption, and the second drive motor is driven with a second power consumption lower than the first power consumption.

When switching from the floor cleaning mode to the upright mode, the power consumption of the first driving motor is increased from the first power consumption to the third power consumption which is larger than the first power consumption.

Then, the power consumption of the second drive motor is reduced at the second power consumption.

In the upright mode, the first drive motor is operated with a third power consumption higher than the first power consumption, and the second drive motor is stopped.

The third power consumption may be the maximum power consumption of the first driving motor.

In the floor cleaning mode, the sum of the first power consumption and the second power consumption is equal to or less than the maximum power consumption of the first driving motor in the upright cleaning mode.

The vacuum cleaner includes a second suction unit detachably mounted on the main body,

And a connection channel pipe selectively connecting any one of the first suction unit and the second suction unit to the main body.

When the vacuum cleaner is operated in the upright mode, the connection duct pipe is connected to the second suction unit.

When the vacuum cleaner is operated in the floor cleaning mode, the connection pipe is connected to the first suction unit.

The first sensing unit senses that the second suction unit is operated in the upright mode when the second suction unit is detached from the main body.

And a second sensing unit for sensing the speed of the first driving motor.

The control unit controls the power consumption of the second driving motor based on the speed of the first driving motor measured by the second sensing unit.

In the floor cleaning mode, the control unit reduces the power consumption of the first drive motor by the first set power consumption when the measured speed of the first drive motor is less than the set speed.

In the floor cleaning mode, the control unit increases the power consumption of the second drive motor by a second set power consumption which is smaller than the first set power consumption.

The sum of the first set power consumption and the second set power consumption is equal to or smaller than the maximum power consumption.

The first sensing unit measures the inclination formed between the main body and the first suction unit to sense either the upright mode or the floor cleaning mode.

According to another aspect of the present invention, there is provided a method of controlling a vacuum cleaner, including: detecting a first mode of operation of the vacuum cleaner in an operation mode that is one of an upright mode and a floor clean mode; The control unit controls the first driving motor provided in the main body to generate a suction force and the second driving motor provided in the first suction unit to which the main body is rotatably connected.

In the floor cleaning mode, the first drive motor is driven with a first power consumption.

In the floor cleaning mode, the second drive motor is driven with a second power consumption lower than the first power consumption.

The power consumption of the first driving motor is increased from the first power consumption to the third power consumption which is larger than the first power consumption when the floor cleaning mode is switched to the upright mode.

When the floor cleaning mode is switched to the upright mode, the power consumption of the second driving motor is reduced at the second power consumption.

In the upright mode, the first drive motor is operated with a third power consumption higher than the first power consumption.

In the upright mode, the second drive motor is stopped.

And the third power consumption is the maximum power consumption of the first drive motor.

The control method of the vacuum cleaner may further include a step of detecting the speed of the first driving motor by the second sensing unit and a step of controlling the power consumption of the first driving motor and the second driving motor based on the speed of the first driving motor Lt; / RTI >

When the speed of the first driving motor detected by the second sensing unit is lower than the set speed, the power consumption of the first driving motor is lower than the first power consumption and the first predetermined power consumption Lt; / RTI >

When the speed of the first driving motor sensed by the second sensing unit is lower than the set speed, the power consumption of the second driving motor is lower than the second power consumption and the second power consumption Power consumption.

The step of sensing the operation mode of the vacuum cleaner determines an operation mode based on an angle formed between the first suction unit and the main body.

Alternatively, the step of sensing the operation mode of the vacuum cleaner determines the operation mode based on whether the second suction unit is mounted on the main body.

According to the present invention, in a process in which the vacuum cleaner is operated in the upright mode, the brush assembly is stopped and the output of the suction motor is increased. Therefore, the cleaning efficiency of the vacuum cleaner is improved.

Further, during the operation of the vacuum cleaner, the speed of the suction motor can be measured using the sensing unit. For example, when cleaning areas with wool, such as carpets, the speed of the suction motor may decrease. At this time, by improving the output of the brush motor, there is an advantage that foreign substances in the carpet can be efficiently removed.

1 is a front perspective view of a vacuum cleaner according to a first embodiment of the present invention.
2 is a rear perspective view of the vacuum cleaner according to the first embodiment.
3 is a cross-sectional view briefly showing a first suction unit configuration according to the first embodiment.
4 is a rear perspective view of a vacuum cleaner showing a state in which the second suction unit of the vacuum cleaner according to the first embodiment is separated from the main body.
5 and 6 are views showing a vacuum cleaner internal flow path in the upright mode according to the first embodiment.
FIG. 7 and FIG. 8 are views showing a flow path inside the vacuum cleaner in the floor cleaning mode according to the first embodiment.
9 is a block diagram showing a control structure of a vacuum cleaner according to the first embodiment.
10 is a flowchart illustrating a control method of the vacuum cleaner according to the first embodiment.
11 is a graph showing a change in power consumption of each drive motor according to the operation mode of the vacuum cleaner according to the first embodiment.
12 is a block diagram showing a control structure of the vacuum cleaner according to the second embodiment.
13 is a flowchart showing a control method of the vacuum cleaner according to the second embodiment.
FIG. 14 is a graph showing power consumption of each driving motor according to the operation mode of the vacuum cleaner according to the second embodiment.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. It is to be understood, however, that the spirit of the invention is not limited to the embodiments shown and that those skilled in the art, upon reading and understanding the spirit of the invention, may easily suggest other embodiments within the scope of the same concept.

FIG. 1 is a front perspective view of a vacuum cleaner according to a first embodiment of the present invention, FIG. 2 is a rear perspective view of a vacuum cleaner according to a first embodiment, and FIG. 3 is a cross- Fig.

1 and 2, the vacuum cleaner 1 of the present embodiment includes a main body 10 having a suction motor 11 for generating a suction force, A first suction unit 10 connected to the main body 10 to be detachably mounted on the main body 10; a dust separating device 30 detachably mounted on the main body 10; A handle 60 provided above the main body 10 and a connection hose 70 connecting the handle 60 and the main body 10 to each other, May be included.

In addition, the vacuum cleaner 1 may be provided with a suction path for sucking foreign substances and air.

In the present invention, the suction passage may be formed differently depending on the operation mode of the vacuum cleaner 1. [ The suction flow path will be described later.

On both sides of the first suction unit 10, wheels 213 for facilitating the movement of the first suction unit 10 may be provided.

A manipulation unit 214 may be provided on the rear side of the first suction unit 10 to allow the main body 10 to be rotated with respect to the first suction unit 10 in an upright state. Therefore, when the user operates the operation unit 214, the main body 10 is rotated with respect to the first suction unit 10. [ At this time, the user may hold the handle 60 and move the first suction unit 10 to clean the floor surface.

Referring to FIG. 3, the first suction unit 10 includes a first suction port housing 212 for forming an appearance, a suction port 212 formed inside the suction port housing 212 for sucking foreign substances and air on the bottom surface, (Not shown).

The first suction port housing 212 may include a brush module 22 disposed at one side of the suction port 211 and rotatably mounted to remove foreign matter from the floor.

A brush member 221 attached to the outer surface of the brush module 22 in the form of a brush and a brush shaft 222 formed inside the brush module 22 to be rotatably coupled to the first suction port housing 212, ) May be included. The brush member 221 may be formed on the outer surface of the brush module 22 to remove foreign matter on the bottom surface thereof.

The first suction port housing 212 may include a brush motor 23 disposed on the other side of the suction port 211 and generating rotation and linear driving force.

The first suction port housing 212 is connected to the brush motor 23 and the brush module 22 and is connected to the first suction port housing 212 by a power for transmitting the driving force of the brush motor 23 to the brush module 22. [ The transfer mechanism 24 may be further included.

The power transmission mechanism 24 includes a driving pulley 241 fixed to one side of the brush motor shaft 2231, a driven pulley 242 fixed to one side of the brush shaft 222, And a belt 243 connecting the driven pulley 242 to the driven pulley 242. The drive pulley 241 and the driven pulley 242 may be disposed to face each other.

When the brush motor 23 is operated to rotate the brush motor shaft 2231 in one direction, the drive pulley 241 can rotate in one direction together with the brush motor shaft 2231. That is, the power of the brush motor 23 can be transmitted to the driving pulley 241.

The power transmitted to the driving pulley 241 can be transmitted to the driven pulley 242 through the belt 243 mounted on the driving pulley 241. Accordingly, (Not shown). As the brush module 22 is rotated, the brush member 221 can effectively remove foreign substances on the floor surface.

1 and 2, the dust separator 30 is selectively mounted on the front side of the main body 10, and the second suction unit 50 is selectively provided on the rear side of the main body 10 Can be mounted.

The dust separator 30 separates foreign matter from the air sucked into the main body 10 and stores the separated foreign matter.

The second suction unit 50 is provided with a second nozzle 51 for cleaning a portion other than the bottom surface or the bottom surface and a suction pipe 52 for connecting the second nozzle 51 and the handle 60 to each other ) May be included.

A mounting portion 40 on which the second suction unit 50 is mounted may be formed on the rear surface of the main body 10.

The mounting portion 40 may include a suction pipe mounting portion 40 on which the suction pipe 52 can be mounted and a nozzle mounting portion 40 on which the second nozzle 51 can be mounted.

In the handle 60, a flow path (not shown) through which the foreign substances sucked through the second nozzle 51 and the air flow may be formed. The connection hose 70 may allow foreign matter and air sucked through the second nozzle 51 to be transferred to the main body 10. The connecting hose 70 may be formed of a flexible material that can be adjusted in length and is free to move.

Hereinafter, the operation of the vacuum cleaner of the present embodiment will be briefly described.

In order to clean the floor, the main body 10 is rotated with respect to the first suction unit 10 in a state where the second suction unit 50 is coupled to the main body 10 as shown in FIG. . The user can clean the floor while moving the first suction unit 10 along the floor surface. At this time, the brush module 22 may be turned on or off by the user.

On the other hand, in order to clean a portion other than the bottom surface, the second suction unit 50 must be separated from the main body 10. [

4 is a rear perspective view of a vacuum cleaner showing a state in which the second suction unit according to the first embodiment is separated from the main body.

4, the second suction unit 50 is detached from the main body 10 while the main body 10 is in an upright position, and the second suction unit 50 is used to remove foreign matter Can be sucked.

As described above, the main body 10 may be provided with two flow paths through which air can flow in order to perform selective cleaning using the first suction unit 10 or the second suction unit 50. [ In addition, one of the two flow paths may be selectively communicated with the suction motor (11).

In this specification, the second suction unit 50 is connected to the main body 10, and in a state in which the main body 10 is rotated with respect to the first suction unit 10, The operation mode is called floor cleaning mode.

The second suction unit 50 is detached from the main body 10 and a space other than the bottom surface or the bottom surface is provided in a state in which the main body 10 is upright with respect to the first suction unit 10. [ The cleanable operation mode is called the upright mode.

Hereinafter, one of the two flow paths is selectively communicated to the suction motor 11.

FIGS. 5 and 6 are views showing a flow path in a vacuum cleaner in the upright mode according to the first embodiment, and FIGS. 7 and 8 are views showing flow paths in the vacuum cleaner in the floor cleaning mode according to the first embodiment.

Referring to FIGS. 1, 5, and 6, a suction motor 11 for generating a suction force may be provided in the main body 10. Rotation shafts 12 may be formed on both sides of the main body 10 so that the main body 10 can be rotated with respect to the first suction unit 10.

The main body 10 is provided with a first suction flow pipe 13 having a first suction passage 131 through which air sucked by the first suction unit 10 and foreign substances flow, A second suction flow pipe 14 formed with a second suction flow path 141 through which the air sucked in the first suction flow path 50 and a foreign substance flow is formed, (15) in which a connection channel (151) for moving air and foreign matter of the first suction channel (131) or the second suction channel (141) to the dust separator (30) is formed.

The main body 10 is provided with a first member 161 for rotating the connection channel pipe 15 in the process of mounting the second suction unit 50 on the mounting portion 40, And a second member 162 for returning the tube 15 to the home position in a rotated state. The second member 162 may include, for example, an elastic member

In summary, when the second suction unit 50 is mounted on the mounting portion 40, the first member 161 can be pressed against the second suction unit 50 to clean the floor surface. At this time, the connection pipe 15 may be communicated with the first suction pipe 13 by the first member 161. Therefore, the suction force of the suction motor 11 can act as the first suction pipe 13. In this state, the user can operate the operation unit 214 to cause the main body 10 to rotate with respect to the first suction unit 10.

Air containing foreign matter can be sucked through the first suction unit (10) by the suction force generated from the suction motor (11). The sucked foreign matter and air can be transferred to the dust separating apparatus 30 through the first suction pipe 13 and the connecting pipe 15. That is, when the vacuum cleaner 1 is operated in the upright mode, the suction path of the vacuum cleaner 1 may be formed by the first suction pipe 13 and the connection pipe 15.

On the other hand, the space to be cleaned by using the first suction unit 10 is restricted in the space other than the bottom surface, for example, the lower space of the furniture, the stairs, the narrow gap, Cleaning can be performed using the cleaning liquid. Of course, it is also possible to clean the floor using the second suction unit.

4, 7 and 8, the second suction unit 50 is detached from the mounting portion 40 in a state where the main body 10 is erected with respect to the first suction unit 10 . In this embodiment, the main body 10 does not have to be upright with respect to the first suction unit 10, but in order to stably perform cleaning using the second suction unit 50, So as to be erected with respect to the first suction unit (10).

The second suction unit (50) can be separated from the main body (10). When the second suction unit 50 is detached from the main body 10, the pressing force applied to the first member 161 (force for rotating the first member) can be removed. Then, the connection channel pipe 15 is rotated by the restoring force of the second member 162, so that the connection channel pipe 15 and the second suction pipe 14 can communicate with each other.

The suction force generated by the suction motor 11 allows air containing foreign matter to be sucked through the second nozzle 51. The sucked foreign matter and air flow sequentially through the suction pipe 52, the handle 60, the connecting hose 70, the second suction pipe 14 and the connecting pipe 15, 30). In other words, when the vacuum cleaner 1 is operated in the floor cleaning mode, the suction path of the vacuum cleaner may be formed by the second suction pipe 14 and the connection pipe 15.

In this specification, the suction motor 11 may be referred to as a first driving motor, and the brush motor 23 may be referred to as a second driving motor.

Further, in the present specification, it has been described that the suction passage is switched by the restoring force of the first member and the second member acting on the first member. However, the present invention is not limited to the switching of the suction flow path by the restoring force, and it is disclosed that the suction flow path can be switched by various methods.

Hereinafter, the control configuration and control method of the vacuum cleaner will be described.

9 is a block diagram showing a control structure of a vacuum cleaner according to the first embodiment.

Referring to FIG. 9, the vacuum cleaner 1 may further include a sensing unit 81 for sensing that the vacuum cleaner operates in either an upright mode or a floor cleaning mode of a vacuum cleaner. The sensing unit 81 may include a sensor for sensing a tilt of the main body 10. The sensing unit 81 may sense a state where the inclination of the main body 10 is vertical with respect to the first suction unit 10 or not. When the inclination of the main body 10 with respect to the first suction unit 10 is vertical, it can be understood that the vacuum cleaner 1 operates in the upright mode. Conversely, when the inclination of the main body 10 with respect to the first suction unit 10 is not perpendicular, it can be understood that the vacuum cleaner 1 is operated in the floor cleaning mode.

As another example, the sensing unit 81 may include a sensor for sensing whether the second suction unit 50 is mounted. The sensing unit 81 senses that the second suction unit 50 is mounted on the mounting unit 40, and the vacuum cleaner 1 is operated in the floor cleaning mode. Conversely, when it is not detected that the second suction unit 50 is mounted on the sensing unit 81, the vacuum cleaner 1 may be regarded as operating in the upright mode.

As another example, the sensing unit 81 may be a sensor for measuring the speed of the suction motor 11 and confirming the operation mode of the vacuum cleaner 1. [ When the vacuum cleaner 1 is operated in the floor cleaning mode, the speed of the suction motor 11 can be operated at a set speed for the set power consumption. On the contrary, when the vacuum cleaner 1 is operated in the upright mode, the suction flow path may be relatively longer than that in the floor cleaning mode. Therefore, a relatively larger load is applied to the suction motor 11, so that the speed of the suction motor 11 can be operated at a value lower than the set speed. Accordingly, when the speed of the suction motor 11 measured by the sensing unit 81 is greater than or equal to the preset speed, the vacuum cleaner 1 can be understood as being operated in the floor cleaning mode. Conversely, when the speed of the suction motor 11 is lower than the set speed, it can be understood that the vacuum cleaner 1 operates in the upright mode.

Meanwhile, the sensed information sensed by the sensing unit 81 may be transmitted to the control unit 84. The control unit 84 may control the output of the suction motor 11 based on the sensed information. The content of the control unit 84 will be described later.

The vacuum cleaner 1 may further include a memory 83 in which information on the vacuum cleaner 1 is stored. The memory 83 may store the power consumption of each of the drive motors 11 and 23 for operating the first and second drive motors 11 and 23.

In this embodiment, the power consumption of the first drive motor 11 is referred to as a _first power consumption W ₁ , and the power consumption of the second drive motor 23 is referred to as a _second power consumption W ₂ Name it.

The vacuum cleaner 1 further includes a control unit 84 for controlling the sensing unit 81, the memory 83, the first driving motor 11, and the second driving motor 23 . The control unit 84 may control the performance of the first driving motor 11 and the second driving motor 23 differently according to the operation mode of the vacuum cleaner 1. [

FIG. 10 is a flowchart showing a control method of the vacuum cleaner according to the first embodiment, and FIG. 11 is a view showing a change in power consumption of each drive motor according to the operation mode of the vacuum cleaner according to the first embodiment.

Referring to FIGS. 10 and 11, an operation start command is input by a user, and the vacuum cleaner 1 may be operated (S1).

The controller 84 controls the sensing unit 81 to check the operation mode of the vacuum cleaner 1 (S3).

When it is detected that the vacuum cleaner 1 is operated in the upright mode (S5), it can be understood that the second suction unit 50 is used by the user. At this time, since the first suction unit 10 is not used, the control unit 84 can turn on only the first drive motor 11. [ At this time, the first driving motor 11 can be operated with the maximum power consumption (W _Max ). As another example, when it is sensed that the vacuum cleaner 1 is operated in the upright mode (S5), the first driving motor 11 is controlled to be in the third power consumption mode, which is higher than the first power consumption and lower than the maximum power consumption It is also possible to operate with power consumption.

If it is detected that the vacuum cleaner 1 is operated in the floor cleaning mode (S7), it can be understood that the first suction unit 10 is used by the user. At this time, the second suction unit 50 is mounted on the mounting portion 40 and may not be used.

Therefore, the control unit 84 can operate the first and second drive motors 11 and 23 with the power consumption (W ₁ , W ₂ ) set by referring to the memory 83 (S9). The first power consumption W ₁ of the first drive motor 11 is higher than the _second power consumption W ₂ of the second drive motor 23 in order to easily suck foreign matter on the bottom surface It can be big. The sum of the first power consumption W ₁ and the second power consumption W ₂ may be equal to or less than the maximum power consumption W _max of the first drive motor 11. [

According to the present embodiment, when the vacuum cleaner is switched to the upright mode in the course of operating in the floor cleaning mode, the second driving motor is stopped and the power consumption of the first driving motor is increased, The suction performance can be improved. That is, cleaning efficiency of the vacuum cleaner is improved.

Hereinafter, a second embodiment of the present invention will be described. The second embodiment is different from the first embodiment in that it is characterized in that, in the sea cleaning mode, the output of the first drive motor or the second drive motor is varied based on the state information of the first drive motor . The second embodiment is different from the first embodiment mainly in terms of differences, and is omitted in the same parts.

12 is a block diagram showing a control structure of the vacuum cleaner according to the second embodiment.

Referring to FIG. 12, the vacuum cleaner 1 may include a first sensing unit 81 for sensing an operation mode of the vacuum cleaner 1. The operation mode may be any one of an upright mode and a sea cleaning mode.

The vacuum cleaner 1 may further include a second sensing unit 82 for sensing the speed of the first driving motor 11. [ The speed of the first driving motor 11 can be reduced in the course of the vacuum cleaner 1 cleaning the wool such as a carpet in the floor cleaning mode operation.

The vacuum cleaner 1 may further include a memory 83 for storing status information on the vacuum cleaner 1. Power consumption (W ₁ , W ₂ ) for operating the first and second drive motors 11, 23 can be stored in the memory 83. A set value for confirming the operation mode of the vacuum cleaner 1 may be stored in comparison with detection information of the first and second drive motors 11 and 23 sensed by the sensing unit 81. [

If the sensing information of the sensing unit 81 is a speed, the setting value may be a setting speed. Alternatively, the set value may be a set pressure when the sensing information of the sensing unit 81 is the pressure of the suction passage.

FIG. 13 is a flowchart showing a control method of the vacuum cleaner according to the second embodiment, and FIG. 14 is a diagram showing a change in power consumption of each drive motor according to the operation mode of the vacuum cleaner according to the second embodiment.

13 and 14, the vacuum cleaner 1 may be operated by a user (S11).

The control unit 84 can check the operation mode of the vacuum cleaner 1 by controlling the first sensing unit 81 at step S13.

When it is detected that the vacuum cleaner 1 is operated in the upright mode (S15), the first driving motor 11 can be turned on and the second driving motor 23 can be turned off. At this time, the power consumption of the first drive motor 11 can be operated with the maximum power consumption W _Max .

When it is detected that the vacuum cleaner 1 is operated in the floor cleaning mode (S17), the first and second drive motors 11 and 23 refer to the memory 83, . That is, the first driving motor 11 may be operated with the _first power consumption W ₁ , and the second driving motor 23 may be operated with the _second power consumption W ₂ . At this time, the first power consumption W ₁ may be larger than the _second power consumption W ₂ . The sum of the _first power consumption W ₁ and the second power consumption W ₂ may be equal to or less than the maximum power consumption W _Max .

Meanwhile, while the vacuum cleaner 1 is operating in the floor cleaning mode, the control unit 84 may control the second sensing unit 82 to measure the speed of the first driving motor 11 (S19). The control unit 84 may compare the measured speed V of the measured first driving motor 11 with the preset speed stored in the memory 83 (S21).

When the measured speed of the first drive motor 11 is larger than the set speed, it can be understood that the first drive motor 11 is in the normal operation state.

On the other hand, when the measurement speed of the first driving motor 11 is lower than the set speed, the vacuum cleaner 1 may be in a state of cleaning a region having a wooly material such as a carpet. Accordingly, in order to improve the cleaning efficiency, the controller 84 may increase the power consumption of the second driving motor while reducing the power consumption of the first driving motor (S23).

In detail, the control unit 84 may vary the power consumption of the first driving motor 11 in the range between the first power consumption W ₁ and the first power consumption W _S1 . Also, the control unit 84 may vary the power consumption of the second driving motor within the range of the second power consumption W ₂ and the second power consumption W _S2 . At this time, the sum of the power consumption of the variable first drive motor 11 and the power consumption of the second drive motor 23 may be equal to or less than the maximum power consumption W _MAX .

The power consumption of the first driving motor 11 is lower than the power consumption of the second driving motor 23 so that the foreign substances separated from the first surface of the carpet are easily sucked through the suction path by the second suction unit 50. [ May be larger than the power consumption. In other words, the first set power consumption W _S1 may mean the current output value of the minimum first drive motor 11 to which the foreign matter can be sucked.

When the power consumption of the first driving motor 11 and the second driving motor 23 is varied, the control unit 84 re-measures the speed of the first driving motor 11, You can check if you are out of the cleaning area.

If it is confirmed that the vehicle has exited the cleaning area, the control unit 84 can operate the driving motors 11 and 23 with the power consumption of the floor cleaning mode.

In this embodiment, the operation mode in which the first drive motor and the second drive motor are operated with the first and second power consumption may be referred to as a first floor cleaning mode. The operation mode in which the first drive motor and the second drive motor operate in the range between the first, second power consumption and the first and second set power consumption may be referred to as a second floor cleaning mode.

According to this embodiment, the middle control unit in which the vacuum cleaner operates in the floor cleaning mode can control the sensing unit to determine whether there is a cleaning zone with a wooly material such as a carpet. In the case of cleaning a wooly area such as a carpet, the power consumption of the first driving motor is lowered, and the power consumption of the second driving motor is increased, so that the foreign matter in the wooly fabric can be efficiently removed.

On the other hand, in the present embodiment, it is determined whether or not there is a wastewater-containing cleaning zone automatically through the sensing unit, and the control unit controls the power consumption of each driving motor based on the sensed information.

However, the vacuum cleaner 1 may be provided with an on / off switch of the second drive motor and a switch capable of controlling the intensity of the second drive motor. It is also possible for the user to manually control each drive motor by using a switch capable of controlling the intensity of the on / off switch and the drive motor.

1: Vacuum cleaner 10: Body
11: Suction motor 13: First suction pipe
14: second suction flow pipe 15: connection flow pipe
20: first suction passage 21: first nozzle
22: Brush module 23: Brush motor
24: Power transmission mechanism 30: Dust separation device
40: mounting portion 50: second suction unit
60: Handle 70: Connection hose
81: first sensing unit 82: second sensing unit
83: memory 84:

Claims (20)

main body;
A first driving motor provided in the main body and generating a suction force;
A first suction unit rotatably connected to a lower side of the main body and placed on a bottom surface;
A second drive motor for driving the brush module provided at the suction port of the first suction unit;
A first sensing unit for sensing either an upright mode in which the main body is operated in a standing state with respect to the first suction unit and a floor cleaning mode in which the main body is operated in an inclined state with respect to the first suction unit; And
And a control unit for controlling power consumption of the first driving motor and the second driving motor according to the operation mode sensed by the first sensing unit. The method according to claim 1,
In the floor cleaning mode,
The first drive motor is driven with a first power consumption,
And the second drive motor is driven with a second power consumption smaller than the first power consumption. 3. The method of claim 2,
When switching from the floor cleaning mode to the upright mode,
The power consumption of the first driving motor is increased from the first power consumption to the third power consumption which is larger than the first power consumption,
And the power consumption of the second driving motor is reduced at the second power consumption. The method according to claim 1,
In the upright mode,
Wherein the first drive motor is operated at a third power consumption higher than the first power consumption, and the second drive motor is stopped. 5. The method of claim 4,
And the third power consumption is a maximum power consumption of the first drive motor. 3. The method of claim 2,
In the floor cleaning mode,
Wherein the sum of the first power consumption and the second power consumption is equal to or less than a maximum power consumption of the first drive motor in the upright cleaning mode. The method according to claim 1,
A second suction unit detachably mounted on the main body; And
Further comprising a connection flow pipe for selectively connecting either the first suction unit or the second suction unit to the main body,
When the operation mode is the upright mode, the connection channel pipe is connected to the second suction unit,
And the connection channel pipe is connected to the first suction unit when the floor cleaning mode is operated. 8. The method of claim 7,
Wherein the first sensing unit comprises:
And detects that the second suction unit is operated in the upright mode when the second suction unit is detached from the main body. The method according to claim 1,
Further comprising a second sensing unit for sensing a speed of the first driving motor,
Wherein,
And controls the power consumption of the second drive motor based on the speed of the first drive motor measured by the second sensing unit. 10. The method of claim 9,
In the floor cleaning mode,
Wherein the control unit decreases the power consumption of the first driving motor by the first predetermined power consumption when the measured speed of the first driving motor is smaller than the set speed and controls the power consumption of the second driving motor by the first setting consumption Power by a second set power consumption that is less than the power. 11. The method of claim 10,
Wherein the sum of the first set power consumption and the second set power consumption is equal to or less than a maximum power consumption. The method according to claim 1,
Wherein the first sensing unit comprises:
And a tilt formed between the main body and the first suction unit is measured to detect either the upright mode or the floor cleaning mode. The first sensing unit sensing that the vacuum cleaner is operated in an operation mode that is one of an upright mode and a floor cleaning mode; And
The control unit may include a first driving motor provided in the main body and generating a suction force based on the operation mode of the vacuum cleaner and a second driving motor provided in the first suction unit rotatably connected to the main body, Control method of vacuum cleaner. 14. The method of claim 13,
In the floor cleaning mode,
The first drive motor is driven with a first power consumption,
And the second driving motor is driven with a second power consumption lower than the first power consumption. 15. The method of claim 14,
When the floor cleaning mode is switched to the upright mode,
The power consumption of the first driving motor is increased from the first power consumption to the third power consumption which is larger than the first power consumption,
Wherein power consumption of the second driving motor is reduced at the second power consumption. 14. The method of claim 13,
In the upright mode,
The first drive motor is operated at a third power consumption higher than the first power consumption,
And the second drive motor is stopped. 17. The method of claim 16,
And the third power consumption is a maximum power consumption of the first driving motor. 14. The method of claim 13,
Detecting a speed of the first driving motor by the second sensing unit; And
And controlling power consumption of the first driving motor and the second driving motor based on the speed of the first driving motor. 19. The method of claim 18,
When the speed of the first driving motor detected by the second sensing unit is lower than the set speed, the power consumption of the first driving motor is lower than the first power consumption and the first predetermined power consumption Lt; / RTI >
Wherein the power consumption of the second driving motor is operated in a range between the second power consumption and a second set power consumption lower than the second power consumption. 14. The method of claim 13,
Wherein the step of sensing the operation mode of the vacuum cleaner comprises:
Wherein the operation mode is determined based on an angle formed between the first suction unit and the main body, or the operation mode is determined based on whether the second suction unit is mounted on the main body.

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