KR20170089627A - cleaner - Google Patents

Abstract

The present invention relates to a cleaner. According to an embodiment of the present invention, a cleaner comprises: an input unit to input a first mode or a second mode; a fan motor; and a control unit controlling the fan motor to generate a suction force by rotating the fan motor in a first direction when the first mode is set, and controlling the fan motor to generate an ejection force by rotating the fan motor in a second direction when the second mode is set. Therefore, with one fan motor, the suction force and the ejection force can be generated.

Description

Cleaner {cleaner}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vacuum cleaner, and more particularly, to a vacuum cleaner capable of generating a suction force and a minute output using a single fan motor.

BACKGROUND ART [0002] Generally, a vacuum cleaner in a vacuum cleaner sucks foreign substances such as air and dust together by using a suction force generated by the operation of a suction motor mounted inside a main body, and then filters foreign substances in the vacuum cleaner.

Particularly, dust and foreign matter on the surface to be cleaned are sucked by the suction force generated in the cleaner main body through the suction line, and after the foreign matter is transferred to the cleaner main body through the connection pipe, the foreign matter is stored in the dust container.

On the other hand, for convenience of use, a vacuum cleaner is equipped with a hands-free function. For this purpose, a battery is mounted on a vacuum cleaner so that the vacuum cleaner can operate even when there is no power cord.

An object of the present invention is to provide a vacuum cleaner capable of generating a suction force and a minute output by using one fan motor.

According to an aspect of the present invention, there is provided a vacuum cleaner including an input unit for inputting a first mode or a second mode, a fan motor for rotating the fan motor in a first direction And controls the fan motor to rotate in the second direction so as to generate minute outputs when the fan motor is set to the second mode.

According to another aspect of the present invention, there is provided a vacuum cleaner comprising: an input unit for inputting a first mode or a second mode; a fan motor; And controls the fan motor to repeat rotation in the second direction and rotation in the first direction when the second mode is set.

According to an embodiment of the present invention, the vacuum cleaner includes an input unit for inputting a first mode or a second mode, and a fan motor. When the fan motor is set to the first mode, And when the fan motor is set to the second mode, the fan motor is rotated in the second direction to control the minute fan motor to generate minute fan motors, so that the suction power and the minute fan power can be generated using one fan motor.

On the other hand, when the fan motor is set to the third mode through the input unit, the control unit controls the fan motor to repeat the second direction rotation and the first direction rotation so that the foreign matter, which is not sucked smoothly, The performance of the vacuum cleaner can be improved.

Particularly, when the distance between the main body and the connecting portion increases in the third mode operation, the fan motor is rotated in the second direction to generate minute output. When the distance between the main body and the connecting portion is reduced, And the suction force is generated by rotating the vacuum cleaner in one direction so that the performance of the vacuum cleaner can be improved.

According to another aspect of the present invention, there is provided a vacuum cleaner comprising: an input unit for inputting a first mode or a second mode; a fan motor; and, when the mode is set to the first mode, And when the fan motor is set to the second mode, the control unit controls the fan motor to repeat the second direction rotation and the first direction rotation so that the suction force and the minute output can be generated using one fan motor .

1 is a perspective view showing a vacuum cleaner according to the present invention.
FIG. 2 is a view illustrating an ultrasonic sensor disposed in the vicinity of the handle of FIG. 1 and an ultrasonic sensor disposed in the body.
Figure 3 illustrates the calculation of the distance between the body of Figure 1 and the connection.
4 is a block diagram schematically illustrating the inside of the cleaner shown in FIG.
5 is a circuit diagram showing a fan driving unit of the cleaner of FIG.
6A to 9B are views referred to in the description of the operation of the vacuum cleaner of FIG.

Hereinafter, the present invention will be described in detail with reference to the drawings.

The suffix "module" and " part "for components used in the following description are given merely for convenience of description, and do not give special significance or role in themselves. Accordingly, the terms "module" and "part" may be used interchangeably.

1 is a perspective view showing a vacuum cleaner according to the present invention.

The vacuum cleaner 100 according to the present invention includes a main body 130, wheels 176 and 177 for moving the main body 130, a dust box 140, a suction port 110, . Further, it may further include a handle 115 formed on the connection portion 120, and an input portion 117 formed in the vicinity of the handle 115.

The main body 130 includes a fan 142 (see FIG. 4) and a fan driving unit for driving the fan (143 of FIG. 4), and generates a suction force by rotation of the fan 141 (FIG.

Particularly, when the fan motor (141 in Fig. 5) in the fan driving section performs forward rotation, it generates a suction force. The generated suction force is transmitted to the connection unit 120 connected to the main body 130 and finally to the suction port 110 connected to the connection unit 120.

Accordingly, the vacuum cleaner 100 can absorb foreign substances around the suction port 110 and is stored in the dust container 140 detachably attached to the main body 130 via the connection part 120.

In this case, a filter may be further provided between the dust container 140 and the connection part 120 to filter the foreign substances to be sucked. The dust container 140 may store the filtered foreign matters.

The connection unit 120 includes a connection pipe 124 connected to the main body 130 and capable of bending and an extension pipe 122 connected between the connection pipe 124 and the inlet 110, ).

On the other hand, a knob 115 and an input unit 117 may be formed on the extension pipe 1220.

On the other hand, in the present invention, the fan motor (141 in FIG. 5) is driven in a first mode in which the fan motor rotates in the first direction and a second mode in which the fan motor rotates in a second direction opposite to the first direction.

According to the first mode, a suction force is generated, and the foreign matter is sucked through the suction port 110. The second mode is a blower mode. In the second mode, a minute output is generated, and the air is blown outwardly of the inlet 110. That is, it is possible to induce the surrounding foreign matter to fly in the opposite direction of the main body.

Particularly, in the present invention, by using a single fan motor (141 in FIG. 5) to generate a suction force or a minute output, there is an advantage of manufacturing cost and space disposition such as not using two motors.

On the other hand, in the present invention, it is described that in addition to the first mode and the second mode, a third mode in which the fan motor (141 in Fig. 5) is alternately rotated in the second direction and in the first direction is also possible.

According to the third mode, since the second direction rotation and the first direction rotation are possible, the foreign matter attached to the carpet or the like is scattered in the direction opposite to the main body 130 by the blower function, And then sucked through the suction port 110 again. As a result, the strongly adhered foreign matter can be easily sucked into the main body 130 by the third mode.

On the other hand, the first mode to the third mode can be selected by an operation in the input unit 117. [ For this purpose, the first mode button, the second mode button, and the third mode button in the input unit 117 may be separately provided.

Meanwhile, the vacuum cleaner 100 according to the present invention can be driven by receiving an AC power through a code line 105 and a power cord 107, and further includes a battery (not shown) It may be a vacuum cleaner that can operate with battery power when no power is supplied.

When the vacuum cleaner 100 operates with an AC power source, it may be called an AC power source operation mode. When the vacuum cleaner 100 operates with a DC power source, it may be called a DC power source operation mode.

On the other hand, in the DC power supply operation mode, it is possible to reduce the power consumption of the battery.

Specifically, the main body 130 includes a battery 230, a fan 142 that generates a suction force by rotation, a fan 142 that drives the fan 142 based on an AC power input in operation in the AC power mode, And a fan driving unit 143 for driving the fan 142 based on the DC power stored in the battery 230. The fan driving unit 143 drives the fan 142 based on the distance between the main body 130 and the connection unit 120 The output or speed of the fan motor 141 that drives the fan 142 can be varied in proportion to the output of the fan motor 141. [ Thus, power consumption of the battery 230 can be reduced.

Particularly, as the distance between the main body 130 and the main body 120 increases, the motor output or the motor speed for driving the fan is increased, and as the distance between the main body 130 and the main body 120 is reduced, The power consumption of the battery 230 can be reduced by reducing the motor output or the motor speed.

2 is a diagram illustrating an ultrasonic sensor disposed in the vicinity of the handle of Fig. 1 and an ultrasonic sensor disposed in the body 130. Fig.

Referring to the drawings, the vacuum cleaner 100 may use an ultrasonic sensor to sense the distance between the connection part 120 and the main body 130.

2 (a), the first ultrasonic sensor 320a may be disposed in the vicinity of the handle 11 disposed on the connection portion 120. In this case,

The second to third ultrasonic sensors 320b and 320c may be disposed behind the main body 130 and the fourth ultrasonic sensor 320c may be disposed in front of the main body 130. [

Each of the ultrasonic sensors 320a to 320d may include an ultrasonic output unit (not shown) and an ultrasonic receiver unit (not shown). For example, the first ultrasonic sensors 320a, The second ultrasonic sensors 320b and 320d disposed on the main body 130 receive the ultrasonic waves output from the main body 320a and the distance between the connection portion 120 and the main body 130 Can be detected.

Figure 3 illustrates the calculation of the distance between the body of Figure 1 and the connection.

Referring to the drawings, when the user 300 performs cleaning while pushing the handle 115, foreign matter or the like is transferred to the dust box 140 in the main body 130 through the connection portion 120 through the suction port 110 do.

2, the ultrasonic waves output from the first ultrasonic sensor 320a disposed at the connection unit 120 may be transmitted to the second through fourth ultrasonic sensors 320b, ..., 320d ) Can receive and detect the distance Dis between the connection part 120 and the main body 130.

In particular, the control unit 310 may calculate the distance between the connection unit 120 and the main body 130 based on the received ultrasound signal.

4 is a block diagram schematically illustrating the inside of the cleaner shown in FIG.

4, the vacuum cleaner 100 may include a fan 142, a fan driving unit 143, a battery 230, and a control unit 310. The vacuum cleaner 100 includes an AC power sensing unit 315, a sensor unit 320, a communication unit 330, a travel unit 144, a travel driving unit 145, an input unit 117, a flow switch 1120, As shown in FIG.

The first flow guide portion 905 is opened in the first mode in which the suction force is generated and the second flow guide portion 907 is opened in the second mode in which the suction force is generated, And the second flow path guide portion 907 is opened and the first flow path guide portion 905 is closed in the second mode in which a minute output is generated.

On the other hand, the flow path switch 112 can be operated such that the first flow path guide portion 905 and the second flow path guide portion 907 are alternately opened in the third mode.

The control unit 310 can control the operation of the flow path switch 112 according to the mode.

The input unit 117 includes a plurality of operation buttons and can transmit an input signal such as an operation on / off of the vacuum cleaner 100 and a fan rotation speed control to the control unit 310 by a user operation.

On the other hand, the input unit 117 may include first mode button to third mode button for selecting the first mode to the third mode.

The AC power sensing unit 315 senses an AC power input when the AC power is input into the vacuum cleaner 100. To this end, the AC power sensing unit may include an AC current detection unit or an AC voltage detection unit.

As the AC power detecting unit, a CT (current trnasformer), a shunt resistor, or the like may be used. As the AC voltage detecting unit, a voltage trnasformer (VT) and a shunt resistor may be used.

For example, when the power cord 107 of the vacuum cleaner 100 is connected to the power outlet, or when the power cord 107 is connected to the outlet, The AC power is input into the cleaner 100, and the AC power sensing unit 15 can sense whether or not the AC power is input.

Meanwhile, when AC power is detected, the detection signal may be transmitted to the controller 310.

The sensor unit 320 may include an ultrasonic sensor or the like to sense the distance between the main body 130 and the connection unit 120.

2, the sensor unit 320 includes a first ultrasonic sensor 320a disposed on the connection unit 120, and second through fourth ultrasonic sensors 320b, 320b disposed in the main body 130. [ 320d). Meanwhile, the signal sensed by the sensor unit 320 may be transmitted to the control unit 310.

The communication unit 330 can wirelessly exchange data with peripheral external devices. For example, a wireless communication unit (not shown) may be provided to enable wireless communication with an AP apparatus (not shown). Here, the wireless communication unit (not shown) can perform WiFi communication. The communication unit 330 can perform wireless data communication with a mobile terminal (not shown) through an AP apparatus (not shown).

The fan 142 rotates by the driving force of the fan motor 141. To drive the fan 142, a fan drive 143 is used.

The fan driving unit 143 transmits the rotational force to the fan 142. [

The fan driving unit 143 can drive the fan 142 based on the alternating current power inputted in the operation in the AC power mode.

On the other hand, the fan driving unit 143 can drive the fan 142 based on the DC power stored in the battery 230 when operating in the DC power mode. At this time, the fan drive unit 143 can vary the output of the motor that drives the fan 142 in proportion to the distance between the main body 130 and the connection unit 120. As a result, power consumption of the battery can be reduced.

The fan drive unit 143 increases the motor output driving the fan 142 as the distance between the main body 130 and the connection unit 120 increases and decreases the distance between the main body 130 and the connection unit 120 The motor output for driving the fan 142 can be reduced.

5) for converting the alternating-current power into the direct-current power, a switching unit (not shown) for outputting either the direct-current power from the converter or the direct-current power from the battery 230 5) 415), an inverter (420 in Fig. 5) which includes a plurality of switching elements and converts the DC power outputted from the switching section 415 to a predetermined AC power by the switching operation and drives the fan 142 ).

The fan driving unit 143 may further include an inverter control unit 430, a current detection unit, and the like. The description of the fan driving unit 143 will be described in more detail with reference to FIG.

The running section 144 can run the cleaner. To this end, the traveling unit 144 may include a left wheel 176 and a right wheel 177 shown in FIG. On the other hand, in order to drive the traveling section 144, the traveling driving section 145 is used.

The travel drive unit 145 may include a motor for transmitting the rotational force to the travel unit 144, a motor control unit for controlling the motor, and the like.

Particularly, the travel driving part 145 can transmit the rotational force to the traveling part 144 based on the distance between the main body 130 and the connecting part 120. [

For example, when the distance between the main body 130 and the connecting portion 120 is equal to or greater than the first distance, the traveling driving portion 145 operates so that the main body 130 follows the connecting portion 120, As shown in Fig. Accordingly, the distance between the main body 130 and the connecting portion 120 is maintained within a predetermined distance.

The control unit 310 can control each unit in the vacuum cleaner 100.

When the mode is set to the first mode, the controller 310 controls the fan motor 141 to generate suction force by rotating the fan motor 141 in the first direction. When the fan motor 141 is set to the second mode, So that minute output can be generated.

The control unit 310 can control the fan motor 141 to repeat the second direction rotation and the first direction rotation through the input unit 117 when the third mode is set.

The control unit 310 controls the fan motor 141 to rotate in the second direction when the distance between the main body 130 and the connection unit 120 increases in the third mode operation, The fan motor 141 can be controlled to rotate in the first direction when the distance between the fan motor 141 and the fan motor 141 is reduced.

The control unit 310 may control the fan motor 141 so that the speed of the fan motor 141 increases when the distance between the main body 130 and the connection unit 120 increases.

The control unit 310 controls the magnitude of the rotation speed in the second rotation to increase sequentially in the third mode operation and controls the magnitude of the rotation speed in the first rotation to increase sequentially.

Meanwhile, the control unit 310 may control the fan motor 141 to generate suction force by rotating the fan motor 141 in the first direction, or may control the fan motor 141 to repeat the second direction rotation and the first direction rotation.

The control unit 310 controls the fan 142 to drive the fan 142 based on the alternating current power inputted in the AC power mode and controls the fan 142 based on the DC power stored in the battery 230, It is possible to control the fan driving unit 143 or the fan 144 so as to drive the fan driving unit 143 or the fan 144. [ The control unit 310 controls the fan driving unit 143 or the fan 144 so as to vary the output of the motor that drives the fan 142 in proportion to the distance between the main body 130 and the connection unit 120. In this case, can do. As a result, power consumption of the battery can be reduced.

The control unit 310 calculates the distance between the connection unit 120 and the main body 130 based on the first ultrasonic sensor 320a and the second to fourth ultrasonic sensors 20b to 320d .

The control unit 310 calculates the distance between the main body 130 and the connection unit 120 and controls the fan drive unit 143 to vary the output of the motor that drives the fan 142 in proportion to the calculated distance Can be controlled.

The control unit 310 increases the motor output driving the fan 142 as the distance between the main body 130 and the connection unit 120 increases and decreases as the distance between the main unit 130 and the connection unit 120 decreases , The fan drive 143 or the fan 144 may be controlled to reduce the motor output driving the fan 142. [

On the other hand, the control unit 310 can control the travel driving unit 145 based on the distance between the main body 130 and the connecting unit 120

For example, when the distance between the main body 130 and the connecting portion 120 is equal to or greater than the first distance, the controller 310 controls the driving driving portion 145 so that the main body 130 follows the connecting portion 120 . Accordingly, the distance between the main body 130 and the connecting portion 120 is maintained within a predetermined distance.

5 is a circuit diagram showing a fan driving unit of the cleaner of FIG.

The fan driving unit 143 of the cleaner according to the embodiment of the present invention includes a converter 410, an inverter 420, an inverter control unit 430, a dc voltage detection unit B, a smoothing capacitor C, and an output current detection unit E. The fan driving unit 143 may further include an input current detecting unit A, a reactor L, and the like.

The reactor L is disposed between the commercial AC power source 405 (v _s ) and the converter 410, and performs a power factor correcting or boosting operation. The reactor L may also function to limit the harmonic current due to the fast switching of the converter 410.

The input current detection section A can detect the input current (i _s ) input from the commercial AC power source 405. To this end, a current transformer (CT), a shunt resistor, or the like may be used as the input current detector A. The detected input current i _s can be input to the inverter control unit 430 as a discrete signal in the form of a pulse.

Meanwhile, the input current detection unit A may be the AC power detection unit 315 of FIG.

The converter 410 converts the commercial AC power source 405, which has passed through the reactor L, into DC power and outputs the DC power. Although the commercial AC power source 405 is shown as a single-phase AC power source in the figure, it may be a three-phase AC power source. The internal structure of the converter 410 also changes depending on the type of the commercial AC power source 405.

Meanwhile, the converter 410 may include a diode without a switching element, and may perform a rectifying operation without a separate switching operation.

For example, in the case of a single-phase AC power source, four diodes may be used in the form of a bridge, and in the case of a three-phase AC power source, six diodes may be used in the form of a bridge.

On the other hand, the converter 410 may be, for example, a half-bridge type converter in which two switching elements and four diodes are connected, and in the case of a three-phase AC power source, six switching elements and six diodes may be used .

When the converter 410 includes a switching element, the boosting operation, the power factor correction, and the DC power conversion can be performed by the switching operation of the switching element.

The switching unit 415 is electrically connected to the converter 410 and the battery 230 and switches to output the DC power from the converter 410 in the AC power mode. 230 to output DC power.

The switching unit 415 outputs the DC power from the converter 410 when the level of the AC power detected by the AC power sensing unit 315 is equal to or greater than a predetermined value, If it is less than the predetermined value, the switching unit 415 outputs the DC power from the battery 230.

The smoothing capacitor C smoothes the input power supply and stores it. In the drawing, one element is exemplified by the smoothing capacitor C, but a plurality of elements are provided so that the element stability can be ensured.

On the other hand, both ends of the smoothing capacitor C are referred to as a dc stage or a dc stage because the dc power source is stored.

The dc voltage detection unit B can detect the dc voltage Vdc at both ends of the smoothing capacitor C. [ For this purpose, the dc voltage detection unit B may include a resistance element, an amplifier, and the like. The detected dc voltage source Vdc can be input to the inverter control unit 430 as a discrete signal in the form of a pulse.

The inverter 420 includes a plurality of inverter switching elements and converts the smoothed DC power supply Vdc into a three-phase AC power supply va, vb, vc having a predetermined frequency by on / off operation of the switching element, And outputs it to the synchronous motor 141.

That is, by the switching operation of the inverter 420, the three-phase currents ia, ib and ic can flow through the three-phase synchronous motor 141 which is a fan motor.

The inverter 420 includes a pair of upper arm switching elements Sa, Sb and Sc and lower arm switching elements S'a, S'b and S'c serially connected to each other, The switching elements are connected to each other in parallel (Sa & S a, Sb & S'b, Sc & S'c). Diodes are connected in anti-parallel to each switching element Sa, S'a, Sb, S'b, Sc, S'c.

The switching elements in the inverter 420 perform ON / OFF operations of the respective switching elements based on the inverter switching control signal Sic from the inverter controller 430. [ Thus, three-phase AC power having a predetermined frequency is output to the three-phase synchronous motor 141.

The inverter control unit 430 can control the inverter 141 based on the output current flowing to the fan motor 141. [ In other words, the inverter control unit 430 can control the switching operation of the inverter 420. [ To this end, the drive controller 430, and can receive the output current (i _o) detected by the output current detector (E).

The inverter control unit 430 outputs the inverter switching control signal Sic to the inverter 420 to control the switching operation of the inverter 420. [ Inverter switching control signal (Sic) is output is generated by a switching control signal of a pulse width modulation (PWM), based on the output current (i _o) detected by the output current detector (E).

To this end, the inverter control unit 430 includes an axis conversion unit (not shown), a speed calculation unit (not shown), a current command generation unit (not shown), a voltage command generation unit (not shown), an axis conversion unit , And a switching control signal output unit (not shown).

(Not shown) receives the three-phase output currents (ia, ib, ic) detected by the output current detecting unit E and converts the three-phase output currents ia, ib and ic into two phase currents iα and iβ in the stationary coordinate system.

On the other hand, the axial conversion unit (not shown) can convert the two-phase current i ?, i? Of the still coordinate system into the two-phase current id, iq of the rotational coordinate system.

)와 연산된 속도(

)를 출력할 수 있다.Based on the two-phase current (i?, I?) Of the stationary coordinate system changed in the axis in the axial conversion unit (not shown), the speed calculating unit (not shown)

) And the calculated speed (

Can be output.

)와 속도 지령치(ω^* _r)에 기초하여, 전류 지령치(i^* _q)를 생성한다. 예를 들어, 전류 지령 생성부(미도시)는, 연산 속도(

)와 속도 지령치(ω^* _r)의 차이에 기초하여, PI 제어기(미도시)에서 PI 제어를 수행하며, 전류 지령치(i^* _q)를 생성할 수 있다. On the other hand, the current command generator (not shown)

(I ^* _q ) on the basis of the speed command value? ^* _R and the speed command value? ^* _R. For example, the current command generator (not shown)

(PI) controller (not shown) based on the difference between the speed command value? ^* _R and the speed command value? ^* _R , thereby generating the current command value i ^* _q .

Next, the voltage command generator (not shown) generates a voltage command generator (not shown) based on the d-axis and q-axis currents (i _d , i _q ) The d-axis and q-axis voltage instruction values (v ^* _d , v ^* _q ) are generated based on the instruction values (i ^* _d and i ^* _q ).

On the other hand, the generated d-axis and q-axis voltage command values (v ^* _d , v ^* _q ) are input to an axial conversion unit (not shown).

)와, d축, q축 전압 지령치(v^* _d,v^* _q)를 입력받아, 축변환을 수행한다.The axis converting unit (not shown) is connected to a position calculating unit (not shown)

) And the d-axis and q-axis voltage command values (v ^* _d , v ^* _q ).

)가 사용될 수 있다.First, the axis converting unit (not shown) performs conversion from the two-phase rotating coordinate system to the two-phase stationary coordinate system. At this time, the position calculated in the speed calculation unit (not shown)

) Can be used.

Then, the axial conversion unit (not shown) performs conversion from the two-phase stationary coordinate system to the three-phase stationary coordinate system. Through this conversion, the axial conversion unit (not shown) outputs three-phase output voltage instruction values v ^* a, v ^* b, and v ^* c.

The switching control signal output unit (not shown) outputs the inverter switching control signal Sic according to the pulse width modulation (PWM) method based on the three-phase output voltage instruction values v ^* a, v ^* b and v ^* And outputs it.

The output inverter switching control signal Sic may be converted into a gate driving signal in a gate driving unit (not shown) and input to the gate of each switching element in the inverter 420. As a result, the switching elements Sa, S'a, Sb, S'b, Sc, and S'c in the inverter 420 perform the switching operation.

The output current detection unit E detects the output current i _o flowing between the inverter 420 and the three-phase motor 141. That is, the current flowing in the motor 141 is detected. The output current detection unit E can detect all of the output currents ia, ib, ic of each phase or can detect the output currents of two phases using the three-phase balance.

On the other hand, the three-phase motor 141 has a stator and a rotor, and an alternating-current power source of a predetermined frequency is applied to a coil of a stator of each phase (a, b, c) .

Meanwhile, the control unit 310 can control the inverter control unit 320 and the switching unit 415.

More specifically, when the level of the AC power detected by the AC power sensing unit 315 is equal to or greater than a predetermined value, the switching unit 415 controls the switching unit 415 to switch the DC power from the converter 410 And controls the switching unit 415 to output the DC power from the battery 230 when the level of the auxiliary power is less than a predetermined value.

6A to 9B are views referred to in the description of the operation of the vacuum cleaner of FIG.

FIG. 6A illustrates a first mode in which a suction force is generated, FIG. 6B illustrates a second mode in which minute outputs are generated, FIG. 6C illustrates a third mode in which minute outputs and suction forces alternately occur, Is performed.

6A illustrates a first mode (mode 1) in which the fan motor 141 rotates in the first direction. That is, forward rotation (Rco) is exemplified.

6A shows a state in which the user advances the connection part 120 and the suction port 110 forward in the first mode (mode 1), and the distance between the connection part 120 and the main body 130 is increased And that the distance is the first distance Dis1. At this time, the fan motor 141 rotates in the forward direction (Rco).

6A shows a state in which the user reverses the connection part 120 and the suction port 110 backward in the first mode (mode 1), and the distance between the connection part 120 and the main body 130 approaches And that the distance is the second distance Dis2. At this time, the fan motor 141 rotates in the forward direction (Rco).

On the other hand, FIG. 7A illustrates the motor speed Mwa in the first mode of FIG. 6A. The control unit 310 can control the motor speed Mwa to be constant as w1 in the first mode.

Alternatively, the control unit 310 may control the speed of the motor to be variable in the first mode.

Normally, when a user uses the vacuum cleaner 100, a vacuum cleaner is used to remove foreign substances while pushing the connection part 120 and the suction port 110 forward.

The control unit 310 controls the speed of the motor or the output of the motor to increase as the suction force increases as the distance between the connection unit 120 and the suction port 110 increases in the first mode, The speed of the motor or the output of the motor can be controlled so as to decrease as the distance between the intake port 120 and the intake port 110 decreases.

Next, FIG. 6B illustrates a second mode (mode 2) in which the fan motor 141 rotates in the second direction. That is, reverse rotation (Rcco) is exemplified. As a result, a minute output is generated, and surrounding foreign matter can be scattered by wind blowing through the inlet 110.

6A shows a case where the user advances the connection part 120 and the suction port 110 forward in the second mode (mode 2), and the distance between the connection part 120 and the main body 130 is increased And that the distance is the first distance Dis1. At this time, the fan motor 141 rotates in the reverse direction (Rcco).

6B shows a state in which the user reverses the connection portion 120 and the suction port 110 backward in the second mode (mode 2), and the distance between the connection portion 120 and the main body 130 is shortened And that the distance is the second distance Dis2. At this time, the fan motor 141 rotates in the reverse direction (Rcco).

On the other hand, Fig. 7B illustrates the motor speed Mwb in the second mode of Fig. 6B. The control unit 310 can control the motor speed Mwb to be constant as -w1 in the reverse direction in the second mode.

Alternatively, the control unit 310 may control the speed of the motor 141 to be variable in the second mode.

The control unit 310 controls the motor speed or the output of the motor to increase in order to increase the minute output as the distance between the connection unit 120 and the intake port 110 increases in the second mode, As the distance between the connecting portion 120 and the inlet 110 becomes closer, the speed of the motor or the output of the motor can be controlled so as to decrease the minute power output.

Next, FIG. 6C illustrates that the fan motor 141 is alternately repeated in the second direction and the first direction as the third mode (mode 3). That is, it is exemplified that the reverse rotation (Rcco) and the forward rotation (Rco) are alternately repeated. As a result, the minute power and the suction force are alternately generated, and surrounding foreign matter is scattered by the wind blowing through the suction port 110, and the ambient foreign matter scattered to the suction port 110 So that it can be sucked.

6C shows a state in which the user advances the connecting portion 120 and the inlet 110 forward in the third mode (mode 3), and the distance between the connecting portion 120 and the main body 130 is increased And that the distance is the first distance Dis1. At this time, the fan motor 141 rotates in the reverse direction (Rcco). As a result, minute output is generated.

6C shows a state in which the user reverses the connection part 120 and the suction port 110 backward in the third mode (mode 3), and the distance between the connection part 120 and the main body 130 approaches And that the distance is the second distance Dis2. At this time, the fan motor 141 rotates in the forward direction (Rco). As a result, a suction force is generated.

6C, when the distance between the connection part 120 and the main body 130 is increased, the fan motor 141 rotates in the forward direction (Rco) to generate a suction force, and the connection part 120 and the main body 130 130 are close to each other, the fan motor 141 rotates in the reverse direction (Rcco) to generate minute outputs.

On the other hand, FIG. 7C illustrates the motor speed Mwc in the third mode of FIG. 6C. The control unit 310 repeats the reverse rotation and the forward rotation in the third mode so that the motor speed Mwc can be controlled so as to be alternately repeated at -w1 and w1.

On the other hand, FIG. 7C illustrates that the magnitude of the speed of the motor 141 is constant while the rotational direction of the motor 141 is changed.

Alternatively, the control unit 310 may control the magnitude of the speed of the motor 141 to be variable in the third mode.

7D, the control unit 310 determines whether the motor 1410 rotates in the reverse direction (Rcco), and the reverse rotation speed (Rco) is higher as the distance between the connection unit 120 and the intake port 110 increases in the third mode, Can be controlled so as to increase in size sequentially.

7 (d), in the third mode, as the distance between the connecting portion 120 and the intake port 110 becomes closer, the motor 1410 rotates in the forward direction (Rco) as shown in the graph of the motor speed (Mwd) And the magnitude of the forward rotation speed is sequentially increased.

As described above, due to the magnitude of the motor speed increasing gradually, it is possible to efficiently remove the foreign matter.

8A to 8B illustrate three-phase currents applied to the motor 141 in the first mode and the second mode.

8A illustrates the three-phase currents ia, ib, ic applied to the motor 141 in the first mode. Particularly, in the figure, it is exemplified that the phase order is ia, ib, ic.

Meanwhile, the inverter control unit 430 or the control unit 310 controls the phases of the two phase currents of the three-phase currents in order to generate the second mode output, that is, to rotate in the second direction opposite to the first direction rotation Can be controlled to be variable.

Specifically, the inverter control unit 430 or the control unit 310 converts the a-phase and the c-phase of ia, ib, and ic into a reverse phase to control the phases to be ic, ib, ia as shown in FIG. .

Accordingly, it is possible to implement the first direction rotation or the second direction rotation simply by using the single motor 141. [

Meanwhile, when the suction force and the minute output are realized by the single motor 141, a flow path is formed in the dust container 140 only when a suction force is generated on the air flow path, and a flow path outside the dust container 140 is formed when minute output is generated .

In this regard, it is preferable that the cleaner 100 according to the embodiment of the present invention includes two air flow path guide portions through one motor 141. [ This will be described with reference to Figs. 9A to 9B.

9 and 9B, the vacuum cleaner 100 includes a suction port 110, a first flow path guide portion 905, a second flow path guide portion 907, a dust box 140, 112, and a discharge port 111, as shown in FIG.

A first flow path guide portion 905 and a second flow path guide portion 907 which are different from each other between the inlet 110 and the outlet 110 may be formed.

The dust channel 140, the filter 1130, and the flow path switch 112 can be disposed in the first flow guide portion 905. The first flow guide portion 905 guides the flow path when the suction force is generated.

The second flow path guide portion 907 guides the flow path at the time of generating minute power and may be formed separately from the first flow path guide portion 905.

The dust container 140 is disposed between the suction port 110 and the fan motor 141 and is disposed in the first flow guide portion 905 and can accumulate foreign substances sucked through the suction port 110.

On the other hand, the flow path switch 112 is disposed between the dust container 140 and the fan motor 141. In the first mode, as shown in Fig. 9A, the first flow path guide portion 905 is opened, In the second mode, the second flow guide portion 907 is opened and the first flow guide portion 905 is closed as shown in FIG. 9B.

Although one flow path switch 112 is shown in the drawing, two flow path switches for opening and closing each of the first flow path guide portion 905 and the second flow path guide portion 907 Or the like.

On the other hand, the flow switch 112 can be controlled by the operation of the control unit 310. [

On the other hand, in the first mode, the flow path switch 112 operates so that the first flow path guide portion 905 is opened and the second flow path guide portion 907 is closed. In the second mode, the second flow path guide portion 907 The first flow guide portion 905 and the second flow guide portion 907 may be alternately opened and closed in the third mode.

As described above, by selectively opening the first flow guide portion 905 and the second flow guide portion 907, it is possible to clearly distinguish the suction force or the flow path at the time of minute output.

Meanwhile, the above-described operation method of the vacuum cleaner can be applied to a vacuum cleaner, a cordless cleaner equipped with a battery, a robot cleaner, and the like.

The vacuum cleaner according to the present invention is not limited to the configuration and method of the embodiments described above, but the embodiments may be modified so that all or some of the embodiments are selectively combined .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.

Claims (12)

An input unit for inputting a first mode or a second mode;
Fan motor;
Wherein the control unit controls the fan motor to generate a suction force by rotating the fan motor in the first direction when the fan motor is set to the first mode and controls the fan motor to rotate in the second direction when the fan motor is set to the second mode, And a controller for controlling the operation of the vacuum cleaner. The method according to claim 1,
Inlet;
A first flow path guide portion;
A second flow path guide part;
A dust container disposed between the suction port and the fan motor, the dust container being disposed in the first flow path guide portion and storing a foreign substance sucked through the suction port;
Wherein the first flow guide part is disposed between the dust container and the fan motor, the first flow guide part is opened and the second flow guide part is closed in the first mode, the second flow guide part is opened in the second mode, And a flow path switch operable to close the first flow path guide portion. The method according to claim 1,
Wherein,
And controls the fan motor to repeat the second direction rotation and the first direction rotation when the third mode is set through the input unit. The method of claim 3,
Inlet;
A first flow path guide portion;
A second flow path guide part;
A dust container disposed between the suction port and the fan motor, the dust container being disposed in the first flow path guide portion and storing a foreign substance sucked through the suction port;
And the second flow guide portion is opened in the second mode, the second flow guide portion is opened in the first mode, and the second flow guide portion is opened in the first mode, Wherein the first channel guide portion and the second channel guide portion are operated so that the first channel guide portion is closed and the first channel guide portion and the second channel guide portion are alternately opened in the third mode. The method of claim 3,
A main body for generating the suction force by the suction force in the first mode;
And a connection part for transmitting the suction force generated in the main body to the suction port,
Wherein,
Wherein when the distance between the main body and the connection portion is increased in the third mode operation, the fan motor is controlled to rotate in the second direction, and when the distance between the main body and the connection portion is reduced, So as to rotate in the first direction. 6. The method of claim 5,
Wherein,
Wherein the control unit controls the speed of the fan motor to increase when the distance between the main body and the connection unit increases. The method of claim 3,
Wherein,
Wherein the controller controls the magnitude of the rotation speed in the second rotation to increase sequentially in the third mode, and controls the magnitude of the rotation speed in the first rotation to increase sequentially. The method according to claim 1,
And an inverter for converting the AC power to a three-phase fan motor using a DC power source,
Wherein the inverter controls the phases of the two phase currents of the three-phase currents flowing through the fan motor during the second mode operation and during the first mode operation to be variable. 9. The method of claim 8,
And an inverter control unit for controlling the inverter based on an output current flowing to the fan motor. 6. The method of claim 5,
A first ultrasonic sensor disposed at the connection portion; And
And a second ultrasonic sensor disposed on the main body,
Wherein,
And calculates a distance between the connection unit and the main body based on the first ultrasonic sensor and the second ultrasonic sensor. 6. The method of claim 5,
A traveling part for moving the main body; And
And a traveling driving unit for driving the traveling unit,
Wherein,
And controls the traveling drive unit based on a distance between the main body and the connection unit. An input unit for inputting a first mode or a second mode;
Fan motor;
Wherein the control unit controls the fan motor to generate a suction force by rotating the fan motor in the first direction when the fan motor is set to the first mode and controls the fan motor to rotate in the second direction and the first direction, And a controller for controlling the vacuum cleaner to repeatedly control the vacuum cleaner.

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