KR20090071283A - Dryer having cleaning apparatus and control method thereof - Google Patents

Abstract

A drier with a cleaning device and a control method thereof are provided to perform the drying and sterilization operation and to prevent the fire due to the foreign material accumulation. A drier with a cleaning device comprises a cabinet(50), an exhaust unit, and a controller. The cabinet has a driving motor performing the dry operation. The exhaust unit is equipped in the cabinet to discharge the air of the cabinet inside and includes an exhaust pipe, a motor, a fan and a filter. The exhaust pipe is connected in the cabinet. The motor is equipped in the exhaust pipe. The fan is connected to the motor. The filter is equipped in the exhaust pipe to filter the foreign material within the ejected air. The controller senses the operation of the drive motor to determine the driving of the exhaust unit and control the actuating time of the exhaust unit.

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.

1 is a configuration diagram showing a flow path structure of a dryer according to the prior art, Figure 2 is a partial cutaway perspective view showing a dryer according to the prior art.

1 and 2, the dryer according to the prior art forms the exterior of the dryer and the case 2 is formed in the front and back of the object to be opened, the inside of the case 2 is rotatably disposed and the object to be dried The drum 12 opened in the front-rear direction so that the air passes therethrough, the heater 18 disposed inside the case 2 to heat the sucked air, and the heated air passed through the heater 18. An intake duct 20 guiding to the rear of the drum 12, an exhaust means 22 for discharging the turbid air while drying the object to the outside of the case 2, and a blowing fan provided in the exhaust means 22 (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, a lifter 11 for lifting and dropping a dry object is disposed.

The exhaust means 22 includes a lint duct 25 in which air in the drum 12 is sucked and a filter 24 is mounted to filter foreign matter, and a fan housing in communication with the lint duct 25 and surrounding the blower fan 30. (26) and an exhaust duct (27) in which one end communicates with the fan housing (26) and the other end is disposed outside the case (2).

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

First, after the object is put into the drum 12, the door is closed and the dryer is operated. As the motor is driven, the drum 12 and the blowing fan rotate, and the heater 18 also operates.

At this time, as the drum 12 is rotated, the dry matter in the drum 12 is lifted by the lifter 11 and falls.

And the outside air is sucked into the inside of the heater 18 by the blowing force generated during the rotation of the blowing fan is heated by high temperature and low humidity air, and then discharged into the drum 12 through the intake duct 20.

The air of the high temperature and low humidity supplied into the drum 12 is moved directly to the front end side of the drum 12 while being in direct contact with the to-be-dropped object to dry and to change into air of 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 thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom.

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

Thus, when power is applied to the driving motor 90 by the user's operation, the exhaust fan 82 is rotated to circulate air, and the air introduced into the cabinet 50 is heated while passing through the heater 100. The air is converted into air and supplied into the drum 60 along the intake pipe 70, and the drying or sterilization operation of the laundry is performed while contacting the laundry within the drum 60.

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 in a cylindrical shape in which the front and rear surfaces thereof are opened so that the front surface corresponds to the opening of the cabinet 50, and the rear surface of the drum 60 is rotatably installed on the support panel 62 having the through hole 62a formed therein.

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

In addition, the 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.

An extension pipe 84 facing the exhaust fan 82 side is provided at the discharge port 64a, and a housing (not shown) is installed between the extension pipe 84 and the exhaust pipe 80 so that the exhaust fan 82 is rotatably embedded. do.

In addition, the intake pipe 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 of a predetermined temperature or more while passing through the heater 100. It moves along the intake pipe 70 to the upper side of the cabinet 50 and flows into the drum 60 through the through-hole part 62a.

At this time, as the drum 60 connected to the drive motor 90 and the belt (not shown) is rotated so that the contact area of the hot air and the laundry increases, a drying operation or a sterilization operation of the laundry is performed.

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 is installed at one side of the cabinet 50, a gas pipe 130 for supplying gas into the cabinet 50, a valve 150 connected to the gas pipe 130, and controlling gas supply and degree, and A nozzle 140 installed on one side of the valve 150, a mixing pipe 120 installed corresponding to the nozzle 140 to mix gas and air, and disposed to correspond to an outer end of the mixing pipe 120 to spark Spark plug 170, which is causing the mixing pipe, the guide pipe 110 is installed outside the mixing pipe 120 to guide the heated air to a predetermined space, and the mixing pipe 120 is installed in the cabinet 50 It includes a bracket 160 and a flame holder 180 is installed in the mixing pipe 120 to suppress that the spark generated by the spark plug 170 is larger than a predetermined size.

Thus, when the valve 150 is opened and the gas is supplied to the mixing pipe 120 along the gas pipe 130, the valve 150 is mixed with the air in the cabinet 50 to be injected outside the mixing pipe 120, and at this time, the spark plug 170 Flames are generated by the flames generated from).

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 pipe 120 has a mixing part 124 formed at one side to allow air in the cabinet 50 to flow in, and the mixing part 124 is formed of a wide opening in comparison with the diameter of the nozzle 140. Gas injected from the 140 and the air inside the cabinet 50 is mixed.

The mixing part 124 is formed by extending the end of the mixing tube 120, the hollow cylindrical shape is formed in the opening corresponding to the end corresponding to the nozzle 140.

Looking at the operation of the gas heater and the dryer having the same according to the present invention configured as described above are as follows.

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 supply of gas is started along the gas pipe 130 while the valve 150 of the heater 100 is opened, the gas passing through the valve 150 is injected into the mixing pipe 120 through the nozzle 140. In addition, primary mixing with air introduced through the nozzle 140 is performed to form a mixed gas.

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

Thereafter, when gas and air mixed gas 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 to vortex Therefore, since the flame is formed around the flame holder 180, a flame which is widely disposed in the lateral direction is formed.

The air introduced into the intake pipe 70 along the guide tube 110 is heated with hot dry air of a predetermined temperature or more while being in contact with the flame.

Thereafter, the air introduced into the drum 60 through the through-hole part 62a flows in a tornado shape and contacts the laundry to perform a 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, and the air which has undergone the drying operation is discharged to the outside of the drum 60 along the discharge port 64a. , And flows to the housing 86 of the exhaust fan 82 through the connecting pipe 84 in communication with the discharge port 64a, and moves along the exhaust pipe 80 in the housing 86 to the cabinet through the discharge port 54. 50) It is discharged to the outside.

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.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art. Will understand.

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.

1 is a configuration diagram showing a flow path structure of a dryer according to the prior art.

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

3 is a configuration 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.

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.

<Explanation of symbols on main parts of the drawings>

50: cabinet 54: discharge port

60 drum 62 support panel

62a: through hole 64a: outlet

70: intake pipe 80: exhaust pipe

82: exhaust fan 84: connector

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. 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 And a control unit for determining whether the air blowing unit is driven according to a signal received from the foreign substance sensing sensor, and controlling a driving time of the air blowing unit. 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 control unit for determining whether the air blowing unit and the air blowing unit are driven according to the signal received from the foreign substance sensing sensor, and controlling the driving time of the air blowing unit and the air blowing unit. Drier equipped. The method according to claim 5 or 6, 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 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. 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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