KR101306037B1 - Dryer having cleaning apparatus and control method thereof - Google Patents

Abstract

The present invention relates to a dryer, and more particularly, to a dryer having a cleaning device capable of discharging foreign matter accumulated in a cabinet.

The present invention, the cabinet is provided with a drive motor for performing the drying operation; An air blowing unit provided in the cabinet to discharge air in the cabinet; And it detects the operation of the drive motor to determine whether the driving of the air blowing unit provides a dryer comprising a cleaning device comprising a control unit for adjusting the driving time of the air blowing unit.

Dryer, Cleaning Equipment, Blowing Unit, Blowing Unit, Filter

Description

Dryer with cleaning device and control method {DRYER HAVING CLEANING APPARATUS AND CONTROL METHOD THEREOF}

The present invention relates to a dryer, and more particularly, to a dryer having a cleaning device capable of discharging foreign matter accumulated in a cabinet.

FIG. 1 is a schematic view illustrating a flow path structure of a conventional dryer, and FIG. 2 is a partially cutaway perspective view of a conventional dryer.

1 and 2, a dryer according to the related art includes a case 2 forming an outer appearance of a dryer and having an inlet and an outlet for the laundry, and a case 2 rotatably disposed inside the case 2, A heater 12 which heats the air sucked and disposed inside the case 2 and a heater 12 which heats the heated air which has passed through the heater 18, An exhaust duct 22 for guiding the air to the rear of the drum 12 and an exhaust duct 22 for discharging the turbid air while drying the laundry to the outside of the case 2; (Not shown), a motor (not shown) and a belt 40 for rotationally driving the drum 12 and the blowing fan.

On the inner circumferential surface of the drum 12, there is disposed a lifter 11 for lifting and dropping the object to be dried.

The exhaust means 22 includes a lint duct 25 for sucking air inside the drum 12 and for filtering the foreign substances with the filter 24 mounted thereon and a fan housing 25 communicating with the lint duct 25 and surrounding the blowing fan 30, And an exhaust duct 27 whose one end is connected to the fan housing 26 and whose other end is disposed outside the case 2. [

Looking at the operation of the prior art configured as described above are as follows.

First, when the laundry is put into the drum 12 and then the door is closed and the dryer is operated, the drum 12 and the blower fan are rotated as the motor is driven, and the heater 18 is also operated.

At this time, as the drum 12 is rotated, the laundry in the drum 12 is lifted by the lifter 11 and then dropped.

The outside air is sucked into the inside of the heater 18 by the wind power generated when the blowing fan rotates, and is then heated by the high temperature and low humidity air, and then discharged into the drum 12 through the intake duct 20.

Temperature and low-humidity air supplied to the inside of the drum 12 is directly contacted with the object to be dried and dried, and is moved to the tip side of the drum 12 while changing into air with low temperature and high humidity, 27 to the outside of the dryer.

Since the dryer according to the prior art does not have a separate device capable of removing foreign matter accumulated in the cabinet, when the dryer is used for a long time, foreign matter such as lint may accumulate and a fire may occur in the dryer.

Therefore, there is a need for improvement.

An object of the present invention is to provide a dryer and a method of controlling the same, which are devised to improve the above problems, and are provided with a cleaning device for suppressing the generation of fire caused by accumulation of foreign substances by discharging foreign substances such as lint.

In order to achieve the above object, the present invention, the cabinet is provided with a drive motor for performing a drying operation; An air blowing unit provided in the cabinet to discharge air in the cabinet; And it detects the operation of the drive motor to determine whether the driving of the air blowing unit provides a dryer comprising a cleaning device comprising a control unit for adjusting the driving time of the air blowing unit.

In addition, the present invention is a cabinet provided with a drive motor for performing a drying operation; An air blowing unit provided in the cabinet to discharge air in the cabinet; A blowing unit provided in the cabinet to pump air into the cabinet; And a controller configured to detect operation of the driving motor to determine whether the air blowing unit and the air blowing unit are driven, and to control a driving time of the air blowing unit and the air blowing unit. To provide.

In addition, the exhaust unit of the present invention, the discharge pipe communicating with the cabinet; A first motor provided in the discharge pipe; A first fan connected to the first motor; And it is provided in the discharge pipe provides a dryer having a cleaning device comprising a filter for filtering foreign matter in the discharged air.

In addition, the blower unit of the present invention, the suction pipe communicating with the cabinet; A second motor provided in the suction pipe; And it provides a dryer having a cleaning device comprising a second fan connected to the second motor.

In addition, the present invention is a cabinet; An air blowing unit provided in the cabinet to discharge air in the cabinet; A foreign matter detection sensor detecting a cumulative amount of foreign matter inside the cabinet; And a controller configured to determine whether the air blowing unit is driven according to a signal received from the foreign substance sensing sensor and to adjust a driving time of the air blowing unit.

In addition, the cabinet of the present invention; An air blowing unit provided in the cabinet to discharge air in the cabinet; A blowing unit provided in the cabinet to pump air into the cabinet; A foreign matter detection sensor detecting a cumulative amount of foreign matter inside the cabinet; And a controller configured to determine whether the air blowing unit and the air blowing unit are driven according to a signal received from the foreign substance sensing sensor, and to adjust a driving time of the air blowing unit and the air blowing unit. It provides a dryer having.

In addition, the exhaust unit of the present invention, the discharge pipe communicating with the cabinet; A first motor provided in the discharge pipe; A first fan connected to the first motor; And it is provided in the discharge pipe provides a dryer having a cleaning device comprising a filter for filtering foreign matter in the discharged air.

In addition, the blower unit of the present invention, the suction pipe communicating with the cabinet; A second motor provided in the suction pipe; And it provides a dryer having a cleaning device comprising a second fan connected to the second motor.

In addition, the present invention comprises a first determination step of detecting whether the drying operation of the dryer; A cleaning step of discharging air in the cabinet by driving the air blowing unit and the air blowing unit when the drying operation is completed; And a second determination step of detecting whether a set time has elapsed after the cleaning step is started.

In addition, the present invention includes a first determination step of detecting the accumulated amount of the foreign matter accumulated in the cabinet by the foreign matter detection sensor; If the cumulative amount of the foreign matter is more than the set value provides a control method of a dryer having a cleaning device comprising a cleaning step for driving the air blowing unit, and the blowing unit.

In addition, when the cumulative amount of the foreign matter in the first determination step of the present invention or less than the set value provides a control method of a dryer having a cleaning device, characterized in that the driving of the air blowing unit, and the blowing unit is stopped.

Dryer having a cleaning device according to the present invention is provided with a blowing unit for discharging the foreign matter in the cabinet, and a blowing unit for pumping air into the cabinet, the foreign matter such as lint is discharged to the outside of the cabinet fire due to accumulation of foreign matter There is an advantage that the occurrence can be suppressed and stable drying and sterilization can be performed.

In addition, the control method of the dryer equipped with a cleaning apparatus according to the present invention is driven by the blower unit and the air blowing unit when the dryer is driven more than the set number of times, thereby preventing the cleaning device from being driven more than necessary to drive the dryer This has the advantage of reducing costs.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a dryer having a cleaning apparatus according to the present invention.

For convenience of description, a dryer having a gas heater will be described as an example.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

Therefore, definitions of these terms should be made based on the contents throughout this specification.

3 is a block diagram showing a dryer according to an embodiment of the present invention, Figure 4 is an exploded perspective view showing a gas heater of the dryer according to an embodiment of the present invention, Figure 5 is an embodiment of the present invention It is a perspective view showing a cleaning apparatus according to.

In addition, Figure 6 is a cross-sectional view showing a blowing unit of the dryer according to an embodiment of the present invention, Figure 7 is a cross-sectional view showing a blowing unit of the dryer according to an embodiment of the present invention, Figure 8 is a view of the present invention A cleaning apparatus is shown in accordance with one embodiment.

3 to 8, a dryer having a gas heater according to an embodiment of the present invention forms a predetermined space, an opening is formed at one side, and a cabinet 50 having an outlet 54 formed therein, and an opening inside. A drum (60) rotatably installed on the drum to accommodate laundry, a plurality of lifters (60a) installed on the inner wall of the drum (60) to rotate the laundry, and air in the cabinet (50) to the drum (60). An intake pipe 70 for guiding, a heater 100 provided in the intake pipe 70, an exhaust fan 82 (see FIG. 11) provided between the drum 60 and the discharge port 54, and an exhaust fan. The exhaust pipe 80 provided between the 82 and the discharge port 54 and the drive motor 90 (refer FIG. 11) connected with the rotating shaft of the exhaust fan 82 are comprised.

When the power is applied to the driving motor 90 by the user's operation, the air is circulated while the exhaust fan 82 is rotated. The air introduced into the cabinet 50 passes through the heater 100, Air is supplied into the drum 60 along the intake tube 70 and is contacted with the laundry in the drum 60 to perform the drying operation or the sterilization operation of the laundry.

Thereafter, the air discharged by the exhaust fan 82 is discharged to the outside through the discharge port 54 of the cabinet 50 along the exhaust pipe 80, thereby circulating the air.

The drum 60 is formed into a cylindrical shape with front and rear openings so that the front surface corresponds to the opening of the cabinet 50 and the back surface is rotatably installed on the supporting panel 62 having the through hole 62a.

The support panel 62 is installed on the back surface of the cabinet 50 so that the drum 60 is rotatably supported and the intake pipe 70 is installed in the through hole 62a.

A front panel 64 is provided between the front end of the drum 60 and the opening of the cabinet 50 and a discharge port 64a is formed at the lower end of the front panel 64.

The outlet 64a is provided with an extension pipe 84 directed toward the exhaust fan 82 and a housing (not shown) in which an exhaust fan 82 is rotatably installed between the extension pipe 84 and the exhaust pipe 80 do.

The intake tube 70 is formed of a passage extending from the heater 100 to the through hole portion 62a so that the air introduced from the inside of the cabinet 50 is converted into air having a predetermined temperature or higher through the heater 100 Is moved to the upper side of the cabinet 50 along the intake tube 70 and flows into the drum 60 through the through hole portion 62a.

At this time, the drum 60 connected to the driving motor 90 and the belt (not shown) is rotated to increase the contact area between the hot air and the laundry, so that the laundry is dried or sterilized.

In addition, the dryer according to an embodiment of the present invention is provided with a cleaning device, the cleaning device is provided in the cabinet 50, the exhaust fan unit 210 for discharging the air in the cabinet 50, the cabinet 50 And a blower unit 250 for pumping air into the cabinet 50 and the operation of the driving motor 90 to determine whether the blower unit 210 and the blower unit 250 are driven and ventilated. And a control unit 270 for adjusting the driving time of the unit 210 and the blowing unit 250.

Thus, when the driving motor 90 is stopped again after the driving motor 90 is driven, it is determined that the drying operation is performed once, and thus the air blowing unit 210 and the blowing unit 250 are driven to accumulate inside the cabinet 50. Foreign matter such as lint will be discharged to the outside of the cabinet (50).

Here, the air blowing unit 210 may include a discharge pipe 212 communicating with the cabinet 50, a first motor 214 provided in the discharge pipe 212, and a first fan connected to the first motor 214. 216 and a filter 218 provided to the discharge pipe 212 to filter foreign matter from the discharged air.

As a result, when the first motor 214 is driven, the first fan 216 is rotated so that the air inside the cabinet 50 is discharged to the outside along the discharge pipe 212, and foreign matter accumulated on the bottom surface of the cabinet 50. The air is discharged together with the filter 218.

The blowing unit 250 includes a suction pipe 252 communicating with the cabinet 50, a second motor 254 provided in the suction pipe 252, and a second fan 256 connected to the second motor 254. It includes.

As a result, when the air blowing unit 210 is driven, the second motor 254 is driven at the same time so that the outside air is forced into the cabinet 50 along the suction pipe 252, thereby removing foreign matter accumulated in the cabinet 50. Pushing toward the discharge pipe 212 is made.

Here, the blower unit 250 may facilitate the cleaning operation by smoothly flowing the air, but the foreign matter inside the cabinet 50 as described above even if the blower unit 250 is omitted and only the blower unit 210 is installed. Cleaning operation to discharge the outside to the cabinet 50 may be made.

Therefore, the blowing unit 250 is omitted, and the technical configuration of the second embodiment of the present invention in which only the blowing unit 210 is installed is possible.

In the dryer having a cleaning apparatus according to the second embodiment of the present invention, since the blower unit 250 is omitted from the first embodiment, detailed drawings or descriptions thereof will be omitted.

The heater 100 includes a gas pipe 130 installed at one side of the cabinet 50 to supply gas into the cabinet 50 and a valve 150 connected to the gas pipe 130 to control the supply / A nozzle 140 installed at one side of the valve 150, a mixing pipe 120 installed corresponding to the nozzle 140 so as to mix gas and air, A guide pipe 110 installed outside the mixing pipe 120 to guide the heated air to a certain space and a guide pipe 110 installed in the cabinet 50 with the mixing pipe 120 mounted thereon A bracket 160 and a flame holder 180 installed in the mixing tube 120 to prevent a flame generated by the spark plug 170 from being formed to a predetermined size or larger.

When the valve 150 is opened and gas is supplied to the mixing tube 120 along the gas tube 130, the mixed gas is mixed with the air inside the cabinet 50 and is injected outside the mixing tube 120. At this time, The flame is generated by the flame generated from the flame.

The generated flame is controlled by the flame holder 180 so that the size and position of the flame are adjusted so that the flame is positioned inside the guide tube 110, so that the air introduced along the guide tube 110 passes through the flame. As the temperature is changed by the hot air and sprayed on the laundry, the drying operation is performed.

The mixing tube 124 is formed at one side of the mixing tube 120 to allow air in the cabinet 50 to flow into the mixing tube 124. The mixing tube 124 has a larger opening compared to the diameter of the nozzle 140, 140 and the air in the cabinet 50 are mixed with each other.

The mixing portion 124 is formed by extending the end portion of the mixing tube 120. The mixing portion 124 is formed into a hollow cylindrical shape and has an opening at an end portion corresponding to the nozzle 140. [

Hereinafter, the operation of the gas heater and the dryer having the gas heater according to the present invention will be described.

9 is a flat view showing an intake passage of the dryer according to an embodiment of the present invention, Figure 10 is a side cross-sectional view showing an intake passage of the dryer according to an embodiment of the present invention, Figure 11 is a view of the invention 12 is a plan view illustrating an exhaust passage of a dryer according to one embodiment, and FIG. 12 is a flowchart illustrating a control method of a dryer having a cleaning device according to an embodiment of the present invention.

3 to 12, first, when a user operates a driving button (not shown) to supply power to the driving motor 90, the exhaust fan 82 and the drum 60 are rotated, and the exhaust fan 82 is rotated. Air introduced into the cabinet 50 by the driving of) is moved to the upper side of the cabinet 50 along the intake pipe 70 formed long in the vertical direction on the rear surface of the cabinet 50.

At this time, since the valve 150 of the heater 100 is opened and gas supply is started along the gas pipe 130, the gas passing through the valve 150 is injected into the mixing pipe 120 through the nozzle 140 And the air introduced through the nozzle 140 are mixed to form a mixed gas.

Further, when the mixed gas is injected into the mixing tube 120, secondary mixing is performed by the air introduced into the space between the mixing tube 120 and the nozzle 140.

When the gas mixture of gas and air is injected through the mixing tube 120, a flame is generated by the spark plug 170. The mixed gas injected from the mixing tube 120 collides with the flame holder 180, So that a flame is arranged laterally in the vicinity of the flame holder 180.

The air flowing into the intake tube 70 along the guide pipe 110 is heated by the hot dry air at a predetermined temperature or higher while being in contact with the flame.

Then, the air introduced into the drum 60 through the through-hole 62a flows in a whirl-like shape and contacts the laundry to perform the drying operation.

A discharge port 64a is formed in the front panel 64 provided between the opening of the drum 60 and the inner wall of the cabinet 50. The air having undergone the drying operation is discharged to the outside of the drum 60 along the discharge port 64a Flows through the connecting pipe 84 communicating with the discharge port 64a to the housing 86 of the exhaust fan 82 and is moved along the exhaust pipe 80 from the housing 86 and is discharged through the discharge port 54 into the cabinet 50).

Here, looking at the operation of the heater 100, the valve 150 is opened with the start of the drying operation, the gas is injected into the mixing pipe 120 through the nozzle 140, the air flowing through the nozzle 140 And primary mixing is achieved.

Thereafter, the air flowing into the mixing unit 124 of the mixing tube 120 is mixed with the mixed gas to perform the secondary mixing.

The mixed gas is injected to the outside of the mixing tube 120, the flame is generated by the spark plug 170 installed on the outside of the mixing tube 120, that is, the inner wall of the guide tube 110 to the intake pipe 70 It is possible to supply thermal energy to the supplied air.

In addition, the flame has a shape that is collected in the center portion of the guide tube 110 by the flame holder 180 to prevent the mixing pipe 120 and the intake pipe 70 is deformed or damaged.

When the drying operation as described above is finished, the cleaning operation is started, the control method of the dryer having a cleaning device according to an embodiment of the present invention, the first determination step (S10) for detecting whether the drying operation of the dryer is finished And, when the drying operation is completed, the cleaning step (S20) for discharging the air inside the cabinet 50 by driving the first motor 214, the second motor 254, and set after the cleaning step (S20) is started And a second determination step S30 of detecting whether time has elapsed.

As described above, since the air blowing unit 210 and the air blowing unit 250 are driven according to the operation of the driving motor 90, when the drying operation is finished, the cleaning operation is started to accumulate foreign matter accumulated in the cabinet 50. Will be removed.

Therefore, if the driving of the drive motor 90 is not detected in the first determination step (S10), the cleaning operation is not started, and after the set time has elapsed in the second determination step (S30), the first motor 214, and Power is cut off to the second motor 254 and the cleaning operation is terminated.

13 is a block diagram showing a cleaning apparatus of a dryer having a cleaning apparatus according to a third embodiment of the present invention, Figure 14 is a control method of a dryer having a cleaning apparatus according to a third embodiment of the present invention. The flow chart shown.

13 and 14, a dryer having a cleaning apparatus according to a third embodiment of the present invention is characterized in that the foreign matter detection sensor 290 is provided, compared to the embodiment, the inside of the cabinet 50 Determination of the amount of foreign matter accumulated in the judgment whether to drive the cleaning operation.

As a result, when the drying operation is completed, unnecessary cleaning is omitted as compared with the exemplary embodiment in which the cleaning operation is unconditionally started regardless of whether the foreign matter is accumulated, thereby reducing the electric energy required for the cleaning operation.

In addition, in the cleaning apparatus according to the third embodiment of the present invention, as described above, the blowing unit 250 may be omitted, and thus the technical configuration of the cleaning apparatus according to the fourth embodiment may include only the air blowing unit 210. .

Dryer having a cleaning device according to a fourth embodiment of the present invention is a technical configuration in which the blowing unit 250 is omitted from the third embodiment, detailed drawings and description thereof will be omitted.

In addition, the control method of the dryer having a cleaning device according to a third embodiment of the present invention is the first determination step (S40) for detecting the accumulated amount of foreign matter accumulated in the cabinet 50 by the foreign matter detection sensor 290 And, if the cumulative amount of the foreign matter is greater than the set value comprises a cleaning step (S50) for driving the air blowing unit 210, and the blowing unit 250.

Thus, the accumulated amount of the foreign matter in the cabinet 50 can be detected according to the signal received from the foreign matter detection sensor 290, so that if the amount of the foreign matter accumulated in the cabinet 50 after the drying operation is over the set value, the air blowing unit ( 210 and the blowing unit 250 is driven to discharge the foreign matter accumulated in the cabinet 50 to the outside.

When the cumulative amount of the foreign matter is less than the set value in the first determination step (S40), the cleaning operation is terminated by stopping the driving of the air blowing unit 210 and the air blowing unit 250.

In addition, the first determination step (S40) of detecting the accumulated amount of foreign matter in the cabinet 50 is made at the end of the drying operation in which the driving motor 90 is stopped and correlated with the operation of the driving motor 90. If the set time elapses without the first determination step (S40) is also possible to use the control method is made.

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 embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

In addition, although a dryer having a gas heater has been described as an example, this is merely an example, and the cleaning apparatus of the present invention may be used in a product other than the cleaning apparatus used in the dryer having the gas heater.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

FIG. 1 is a configuration diagram showing a flow path structure of a conventional dryer.

2 is a partially cutaway perspective view of a dryer according to the prior art.

FIG. 3 is a configuration diagram illustrating a dryer according to an embodiment of the present invention.

4 is an exploded perspective view illustrating a gas heater of a dryer according to an embodiment of the present invention.

5 is a perspective view showing a cleaning apparatus according to an embodiment of the present invention.

Figure 6 is a cross-sectional view showing the air blowing unit of the dryer according to an embodiment of the present invention.

7 is a cross-sectional view showing a blowing unit of the dryer according to an embodiment of the present invention.

8 is a block diagram showing a cleaning apparatus according to an embodiment of the present invention.

9 is a flat view showing an intake passage of a dryer according to an embodiment of the present invention.

10 is a side cross-sectional view showing an intake passage of a dryer according to an embodiment of the present invention.

11 is a plan view showing the exhaust passage of the dryer according to an embodiment of the present invention.

12 is a flowchart illustrating a control method of a dryer having a cleaning device according to an embodiment of the present invention.

13 is a block diagram showing a cleaning apparatus of a dryer having a cleaning apparatus according to a third embodiment of the present invention.

14 is a flowchart illustrating a control method of a dryer having a cleaning device according to a third embodiment of the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

50: cabinet 54: outlet

60: Drum 62: Support panel

62a: Through hole portion 64a:

70: intake pipe 80: exhaust pipe

82: exhaust fan 84: connection pipe

86: housing 90: drive motor

100: heater 110: guide tube

120: mixing tube 124: mixing section

130: gas pipe 140: nozzle

150: valve 160: bracket

170: spark plug 180: flame holder

210: exhaust unit 212: discharge pipe

214: the first motor 216: the first fan

218: filter 250: blowing unit

252: suction pipe 254: second motor

256: second fan 270: control unit

290: Foreign substance detection sensor

Claims (11)

A cabinet provided with a drive motor for performing a drying operation; An air blowing unit provided in the cabinet to discharge air in the cabinet; And And a control unit for determining whether the air blowing unit is driven by sensing the operation of the driving motor, and controlling a driving time of the air blowing unit. A cabinet provided with a drive motor for performing a drying operation; An air blowing unit provided in the cabinet to discharge air in the cabinet; A blowing unit provided in the cabinet to pump air into the cabinet; And And a control unit configured to detect operation of the driving motor to determine whether the air blowing unit and the air blowing unit are driven, and to control a driving time of the air blowing unit and the air blowing unit. 3. The method according to claim 1 or 2, The air blowing unit, A discharge pipe communicating with the cabinet; A first motor provided in the discharge pipe; A first fan connected to the first motor; And And a filter for filtering foreign matters in the discharged air provided in the discharge pipe. The method of claim 2, The blowing unit, A suction pipe communicating with the cabinet; A second motor provided in the suction pipe; And Dryer having a cleaning device comprising a second fan connected to the second motor. cabinet; An air blowing unit provided in the cabinet to discharge air in the cabinet; A foreign matter detection sensor detecting a cumulative amount of foreign matter inside the cabinet; And A control unit for determining whether the air blowing unit is driven according to a signal received from the foreign matter detection sensor, and adjusting a driving time of the air blowing unit; The air blowing unit includes a discharge pipe communicating with the cabinet, a first motor provided in the discharge pipe, a first fan connected to the first motor, and a filter for filtering foreign substances in the air discharged from the discharge pipe. Dryer having a cleaning device characterized in that. cabinet; An air blowing unit provided in the cabinet to discharge air in the cabinet; A blowing unit provided in the cabinet to pump air into the cabinet; A foreign matter detection sensor detecting a cumulative amount of foreign matter inside the cabinet; And And a controller for determining whether the air blowing unit and the air blowing unit are driven according to a signal received from the foreign matter detection sensor, and adjusting the driving time of the air blowing unit and the air blowing unit. The air blowing unit includes a discharge pipe communicating with the cabinet, a first motor provided in the discharge pipe, a first fan connected to the first motor, and a filter for filtering foreign substances in the air discharged from the discharge pipe. Dryer having a cleaning device characterized in that. delete The method of claim 6, The blowing unit, A suction pipe communicating with the cabinet; A second motor provided in the suction pipe; And Dryer having a cleaning device comprising a second fan connected to the second motor. A first judging step of detecting whether a drying operation of the dryer is finished; A cleaning step of discharging air in the cabinet by driving the air blowing unit and the air blowing unit when the drying operation is completed; And And a second judging step of detecting whether a set time has elapsed after the cleaning step is started. A first judging step of detecting a cumulative amount of foreign matter accumulated in the cabinet by a foreign matter detection sensor; And a cleaning step of driving the air blowing unit and the air blowing unit when the accumulated amount of the foreign matter is greater than or equal to the set value. 11. The method of claim 10, If the cumulative amount of the foreign matter in the first determination step is less than the set value control method of the dryer having a cleaning device, characterized in that the driving of the air blowing unit, and the blowing unit is stopped.

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