KR100751132B1 - Controlling method for sensing filter blocking of dryer - Google Patents

Abstract

A controlling method for sensing a clogged filter of a dryer is provided to prevent overheat of a drum by rapidly detecting the clogged filter and notifying a user that a filter is clogged. A controlling method for sensing a clogged filter of a dryer includes the steps of: measuring an inside temperature by a high temperature sensor and a low temperature sensor(S120); determining whether a difference of a temperature(TH) measured by the high temperature sensor, and a temperature(TL) measured by the low temperature sensor is more than a preset value(A)(S130); completing a dry process if the difference of the temperatures is not more than the preset value(S150); determining whether the temperature measured by high temperature sensor is more than another preset value(B) if the difference of the temperatures is more than the preset value(S140); completing the dry process if the measured temperature is not more than another preset value(B)(S150); determining that the filter is clogged if the measured temperatures is more than another preset value(S160); and outputting a signal notifying a filter exchange request by the controller if the dry time passes a preset time(t1)(S180).

Description

Control method for sensing filter blocking of dryer

1 is a cross-sectional view schematically showing a condensation type dryer in which a filter clogging detection control method according to the spirit of the present invention is implemented.

Figure 2 is a block diagram schematically showing the system configuration of the dryer for implementing the filter clogging detection control method according to the spirit of the present invention.

3 is a flowchart showing a filter clogging detection algorithm of a dryer according to the spirit of the present invention.

4 is a flowchart showing a safety control process according to the spirit of the present invention.

Figure 5 is a flow chart showing a control method for further securing the stability of the drying drum of the filter clogging detection control method according to the spirit of the present invention.

<Description of the symbols for the main parts of the drawings>

10 dryer 11 cabinet

12: drying drum 13: door

14 door lint filter 15 circulation passage

16 cooling fan 17 motor

18: drying fan 19: drying duct

The present invention relates to a dryer, and more particularly, to a filter clogging detection control method of a dryer for quickly detecting the clogging of the filter to prevent overheating of the drum internal temperature.

In general, in the drum dryer, when the drying drum rotates, the laundry contained in the drying drum rotates together, and the laundry rises and falls by the rotation. Then, the hot dry air flowing into the drying drum is mixed with the laundry to evaporate the moisture permeating the laundry, thereby allowing the laundry inside the drying drum to dry. In addition, the dryer is introduced into the drum again through the condenser and the heater, the air inside the drum is condensation type dryer circulating in the dryer without being discharged to the outside, and the air inside the drum passes through the condenser It is roughly classified as an exhaust dryer that removes moisture and then discharges it to the outside.

In detail, in the case of the condensation type dryer, the circulating air circulating in the dryer absorbs moisture permeating the laundry inside the drum, and then the temperature is lowered by heat exchange as it passes through the condenser. As the temperature decreases, moisture contained therein condenses. The condensed water condensed is pumped by a condensation pump and finally discharged to the outside.

On the other hand, the exhaust dryer takes a manner in which hot and humid air, which absorbs moisture from laundry inside the drum, is discharged through the lint filter to the outside of the dryer.

However, the condensation-type and exhaust-type dryers are the same in that the laundry contained in the drum is repeatedly heated and dropped by the rotation of the drum, while actively exchanging heat with the hot dry air inside the drum.

On the other hand, both the condensation type dryer and the exhaust type dryer are equipped with a filter for collecting lint generated from laundry. And, the filter is mounted on the flow path of the air exiting the drum, to filter the lint contained in the air. One or more filters are mounted on the air passage.

In the case of such a filter, the air must be periodically cleaned to prevent the phenomenon of overheating of the drum due to heat generated from the heater. If the filter is clogged, air circulation is not made smoothly, which causes the drum to overheat, causing laundry to ignite.

Conventionally, when the filter clogging is 95% or more, a warning signal indicating the filter clogging is generated, and a signal indicating the filter clogging is generated based on the remaining time during the drying process, and whether the drying process is to be continued or the drying process is stopped. It was programmed to determine whether or not.

For this reason, the heater was kept on even though the filter was clogged, thereby exposing not only energy waste but also fire hazard.

The present invention has been proposed to solve the above problems, and by improving the filter clogging force detection method, to provide a filter clogging detection control method of the dryer to promptly generate a warning signal when the filter is clogged beyond the safety standards. The purpose.

In addition, by improving the filter clogging detection method, it is possible to prevent overheating of the drying drum so that it is not exposed to the risk of fire, and provides a filter clogging detection control method of the dryer that can minimize the energy loss due to the continuous operation of the heater. It aims to do it.

In addition, it is an object of the present invention to provide a filter clogging detection control method of the dryer to prevent the occurrence of fire by forcibly blocking the operation of the dryer when a signal for warning the filter clogging occurs a predetermined number of times.

Filter clogging detection control method of the dryer according to the present invention for achieving the above object comprises the steps of starting the drying process according to the operation command input; Determining whether the filter is clogged according to a difference between the temperature detected by the high temperature sensor and the low temperature sensor and a temperature value detected by the high temperature sensor; Determining whether the filter replacement notification signal is generated according to whether the filter is clogged, and whether or not the drying process is continued after the filter replacement notification signal is generated according to the elapsed time of the drying process at the time determined as the filter clogging. It features.

In another aspect, a method of controlling a filter clogging detection of a dryer according to the present invention includes the steps of inputting an operation command of the dryer; Uploading the accumulated number of filter replacement notification signals; And determining whether the dryer continues or stops operating according to the number of uploaded filter replacement notification signals.

By the above configuration, by periodically cleaning the filter has the effect of eliminating the risk of fire due to overheating during the drying process.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the spirit of the present invention is not limited to the embodiments presented, and other embodiments included within the scope of the inventive concept and other inventions can be easily added by adding, changing, or deleting other elements. I can suggest.

1 is a cross-sectional view schematically showing a condensation type dryer in which a filter clogging detection control method according to the spirit of the present invention is implemented.

Referring to FIG. 1, a dryer 10 according to the present invention includes a cabinet 11 forming an exterior, a front frame 22 and a front cover 23 coupled to a front of the cabinet 11, and the cabinet. Cylindrical drum 12 formed in the interior of 11, the door 13 which is attached to the front part of the drum 12, and opens and closes the entrance of the drum 12, and the drum 12 of the A belt 21 which rotates the drum 12 around the outer circumferential surface thereof and a drum support 24 which allows the rear side of the drum 12 to be supported by the cabinet 11 are included. Here, the front portion of the drum 12 is supported by the front cover 23.

In addition, the dryer 10 includes a motor shaft 171 connected to the belt 21, a motor 17 connected to the motor shaft 171 to provide rotational force to the belt 21, and the motor. The cooling fan 16 is connected to the shaft 171 and receives the indoor air while rotating under the rotational force of the motor 17.

In addition, the dryer 10 is connected to the motor shaft 171 on the opposite side of the cooling fan 16 by a drying fan 18 for circulating air in the drum, and by the drying fan 18 As a passage through which the sucked air is moved to the drum 12, a drying duct 19 having a heating unit 20 therein is further included.

In addition, the dryer 10 includes a door lint filter 14 formed on the rear surface of the door 13 to filter lint and the like contained in the wet air discharged from the drum 12, and the door lint filter 14. It further includes a body lint filter 151 for filtering the wet air passed through the) and the circulation duct 15 which is a passage through which the air passing through the body lint filter 151 is moved to a condenser (not shown). .

In addition, the heater 20 includes a high temperature heater 201 that generates about 1750W of heat and a low temperature heater 202 that generates about 750W of heat. In addition, near the heater 20, that is, behind the drying drum 12, a high temperature sensor 26 for detecting a temperature of air passing through the drying duct 19 is mounted, and the front of the drying drum 12 is mounted. It is equipped with a low temperature sensor 27 for sensing the temperature of the wet steam passing through the drying drum 12. Here, various kinds of sensors may be applied as the temperature sensor, and as one embodiment, a thermistor whose resistance is changed according to temperature change is possible.

Hereinafter, the operation of the dryer will be described.

First, when power is applied to the dryer, the motor 17 rotates, and the heater 20 attached to the drying duct 19 is heated. Then, the belt 12 connected to the motor shaft 171 rotates to rotate the drum 12. In detail, the drum 12 is rotated by using the drum support 100 as a rotation axis. As the drum 12 rotates, the drying object in the drum 12 rotates along the inner wall of the drum and falls by its own weight when the drum 12 reaches the uppermost portion. Here, the object to be dried is lifted by a lift (not shown) attached to the inner wall of the drum 12.

On the other hand, the drying fan 18 connected to the motor shaft 171 is operated with the rotation of the motor 17, the circulating air passing through the condenser is sucked. The sucked circulating air rises along the drying duct 19 and becomes a high temperature dry state through the heater 20. In addition, the circulating air in the high temperature dry state absorbs the moisture present in the object to be dried while passing through the drum 12, thereby becoming a high temperature and high humidity state.

In addition, the hot and humid air is filtered again while passing through the door lint filter 14 and the body lint filter 151, and then moved to the condenser along the circulation duct 15.

In addition, the cooling fan 16 connected to the motor shaft 171 rotates to suck the indoor air outside the dryer. Then, the sucked indoor air is moved to the condenser through the cooling fan 16.

Here, the hot and humid air moved to the condenser along the circulation duct 15 and the indoor air sucked by the cooling fan 16 and moved to a condenser (not shown) pass through the condenser. . The hot and humid air and the indoor air are not mixed with each other by the shape of the condenser, and only heat exchange occurs.

Thus, the high temperature and high humidity air is changed to low temperature and high humidity air while losing heat to the indoor air while passing through the condenser. Then, as the temperature decreases, moisture contained in the air condenses and falls to the bottom of the condenser, thereby moving to a sump (not shown) in which condensate is collected.

Here, the control unit for controlling the operation of the dryer 10 uses the temperature difference and the drying progress time of the air detected by the high temperature sensor 26 and the low temperature sensor 27, respectively, whether the filter is clogged, that is, replacing the filter. It will be judged.

Hereinafter, a control method for detecting whether a filter is blocked will be described in more detail with reference to the accompanying drawings.

2 is a block diagram schematically illustrating a system configuration of a dryer for implementing a filter clogging detection control method according to the spirit of the present invention.

2, in the system of the dryer for implementing the filter clogging detection control method according to the present invention, the control unit 100 and the control unit 100 is electrically connected to input an operating command of the dryer 10 or input a drying condition. A high temperature sensor 26 and a low temperature sensor 27 for detecting an air temperature in the drying drum and transmitting the detected air temperature to the control unit 100, and the drying input by the key input unit 110. The driving unit 130 provides power to operate the dryer according to the condition, and the memory 120 for storing commands and various data input through the key input unit 110 is included. In addition, the driving unit 130 includes a motor 17 for driving the drying drum 12, a high temperature heater H1 201 and a low temperature heater H2 202 for heating air introduced into the drying drum 12. ), And the like.

By the above configuration, when the user inputs a drying condition through the key input unit 110 and inputs an operation command, the motor 17 rotates so that the drying drum 12 rotates. The high temperature heater 201 and the low temperature heater 202 are turned on to generate heat. The air is circulated by the fan connected to the motor 17 and heated by the heaters 201 and 202.

Meanwhile, during the drying process, the temperature of the air circulating in the drying drum 12 is sensed through the high temperature sensor 26 and the low temperature sensor 27, and the detected temperature is transferred to the controller 100. Is transmitted and stored in the memory 120. The controller 100 determines whether the filter is clogged using the temperature value stored in the memory 120 and the drying execution time. When it is determined that the filter is clogged, a warning message for notifying the filter is output, and at the same time, it is determined whether to continue the drying process.

Hereinafter, the filter clogging detection control method as described above will be described in more detail with reference to a flowchart.

3 is a flowchart illustrating a filter clogging detection algorithm of a dryer according to the inventive concept.

Referring to FIG. 3, first, a user inputs a drying condition through a key input unit 110 and an operation command through an operation button (ST110). Then, the drying drum 12 rotates while the motor 17 rotates with the operation command, and at the same time, the high temperature heater 201 and the low temperature heater 202 are turned on. Then, the drum internal temperature is measured by the high temperature sensor 26 and the low temperature sensor 27 (ST120). Here, the temperature sensed by the high temperature sensor 26 is referred to as TH, and the temperature sensed by the low temperature sensor 27 is referred to as TL.

Meanwhile, the temperature values TH and TL sensed by the temperature sensor are transmitted to the controller 100 and the magnitudes thereof are compared. In detail, the controller 100 determines whether the (TH-TL) value is greater than or equal to the set value A (ST130). Here, the set value A is preferably about 90 degrees.

In more detail, when the difference in temperature value detected by the temperature sensor is not greater than the set value A, drying proceeds according to the input drying condition (ST150), and it is determined whether drying is complete as time passes (ST200). )do. And, if it is determined that the drying is completed, the operation of the dryer is terminated.

On the other hand, if it is determined that the difference between the temperature values is greater than the set value A, it is determined whether or not the temperature TH detected by the high temperature sensor 26 is higher than another set value B (ST140). Here, the set value (B) is preferably 140 degrees Celsius.

In detail, when the temperature value TH detected by the high temperature sensor 26 is not greater than the set value B, a drying process ST150 is performed according to the input drying condition. When the detected temperature value H1 is larger than the set value B, it is determined that the filter is clogged (ST160).

On the other hand, at the time when it is determined that the filter is clogged, it is determined whether or not the drying time has passed the set time t1 (ST170). In this case, the set time t1 is preferably about 20 minutes.

In more detail, when it is determined that the drying time has passed the set time (t1), the control unit outputs a signal for notifying the filter replacement (ST180), and as a warning signal, a method such as voice or light or text notification through the display window is possible. Do.

In addition, after the filter replacement notification signal is output, the drying process is continuously performed through the safety control process (ST190). The safety control process will be described in detail with reference to the accompanying drawings.

On the other hand, when the drying time has not passed the set time t1, the heater is turned off (ST210). Then, a cooling process in which the fan and the drying drum rotate for a set time t2 is performed. After the set time t2 has elapsed, it is determined whether the temperature TL detected by the low temperature sensor has fallen below the set temperature C (ST230). The set time t2 is preferably about 15 minutes, and the set temperature C is preferably about 47 degrees Celsius. If the temperature TL detected by the low temperature sensor is higher than the set temperature C even after the set time t2 has elapsed, the heater off state is continuously maintained (ST240). On the other hand, after the set time t2 has elapsed, when the sensing temperature TL falls below the set temperature C, a signal for notifying the filter replacement is output (ST250) and the operation of the dryer is terminated.

In summary, the difference (TH-TL) of the temperature detected by the high temperature sensor and the low temperature sensor is larger than the set value (A), the temperature (TH) detected by the high temperature sensor is larger than the set temperature (B), and the drying time If the set time (t1) has elapsed, drying will continue even after the filter change warning signal is issued.However, if the set time (t1) has not elapsed, the dryer will not operate after the filter change warning signal. Is stopped. Therefore, there is an effect of preventing the phenomenon that laundry is ignited due to excessively high temperature in the drying drum.

4 is a flowchart showing a safety control process according to the spirit of the present invention.

Referring to Figure 4, the safety control process according to the invention is characterized in that it consists of three steps.

In detail, in the state where the high temperature heater H1 and the low temperature heater H2 are turned on, the temperature TH inside the drum (or the drying duct outlet side) is sensed by the high temperature sensor 26. Then, it is determined whether the sensing temperature TH is higher than the first set temperature T1 (ST310). Here, the first set temperature (T1) is preferably 140 degrees Celsius.

In detail, when the temperature value TH detected by the temperature sensor 150 is lower than the first set temperature T1, the normal drying process is performed while the heaters H1 and H2 are both kept in an on state. Then, it is determined whether drying is completed (ST320), and if drying is in progress, it is determined in real time whether the drum internal temperature TH is higher than the first set temperature T1 by the high temperature sensor 26. On the other hand, if it is determined that the drying is completed, the drying process is terminated.

Meanwhile, when it is determined that the temperature value TH detected by the high temperature sensor 26 is higher than the first set temperature T1, some of the heaters are turned off and the drum internal temperature TH is maintained within the set temperature range. A first control step is performed to make this possible.

In detail, when it is determined that the temperature value TH detected by the high temperature sensor 26 is higher than the first set temperature T1, when entering the first control step, the high temperature heater H1 is turned off (ST330). After the high temperature heater H1 is turned off, the high temperature sensor 26 determines whether the drum internal temperature TH is lower than the second set temperature T2 (ST340). If it is determined that the drum internal temperature TH is lower than the second set temperature, the high temperature heater H1 is turned on again (ST350), and if it is determined to be higher than the second set temperature, the high temperature heater H1 is kept off. . This means that the heater is restarted when the drum internal temperature TH falls below the second set temperature after the drum inside is overheated and the high temperature heater H1 is turned off. The second set temperature is preferably about 120 degrees Celsius.

In addition, after the high temperature heater H1 is turned on again, it is determined whether drying is completed (ST360), and if the drying is in progress, the drum internal temperature TH is determined by the high temperature sensor 26 to a first set temperature ( It is determined whether or not higher than T1) (ST370). When the drum internal temperature TH is lower than the first set temperature T1, drying is continuously performed while both the high temperature heater H1 and the low temperature heater H2 are turned on. On the other hand, if the drum internal temperature TH is higher than the first set temperature T1, it is determined whether it is higher than the third set temperature T3 (ST380). Here, the third set temperature (T3) is preferably approximately 145 degrees Celsius.

In detail, when the drum internal temperature TH detected by the temperature sensor is lower than the third set temperature T3, drying is performed while the high temperature and low temperature heaters H1 and H2 are turned on. That is, the process returns to step S350. On the other hand, if it is determined that the drum internal temperature TH is higher than the third set temperature, both the high temperature and low temperature heaters H1 and H2 are turned off, and a second control step is performed to keep the drum interior within the set temperature range. do.

As described above, when the internal temperature of the drum is higher than the set temperature and enters the first control step, the inside of the drum is turned on by the first set temperature T1 and the second set temperature T2 by the on-off process of the high temperature heater H1. Is controlled to remain within the range.

On the other hand, when it is determined that the drum internal temperature TH is higher than the third set temperature and enters the second control step, both the high temperature and low temperature heaters H1 and H2 are turned off (ST190).

In detail, after the high and low temperature heaters H1 and H2 are both turned off, it is determined whether the drum internal temperature TH is lower than the fourth set temperature T4 by the temperature sensor (ST400). That is, the heater is maintained in a completely off state until the drum internal temperature drops below the fourth set temperature T4. Here, the fourth set temperature (T4) is preferably approximately 95 degrees Celsius.

In more detail, when the drum internal temperature TH drops below the fourth set temperature, the low temperature heater H2 is turned on (ST410). The control unit determines whether drying is complete (ST420), and when it is determined that drying is completed, the entire drying process is terminated.

On the other hand, if it is determined that the drying is in progress, it is determined whether the drum internal temperature TH is higher than the fifth set temperature T5 (ST430). Here, the fifth set temperature T5 is preferably about 125 degrees Celsius. In detail, when the drum internal temperature TH is lower than the fifth set temperature T5, drying continues while the low temperature heater H2 is turned on. On the contrary, when it is determined that it is higher than the fifth set temperature T5, it is determined again whether it is higher than the sixth set temperature T6 (ST440). Here, the sixth set temperature T6 is preferably about 130 degrees Celsius.

In more detail, when it is determined that the temperature value TH detected by the temperature sensor is lower than the sixth set temperature T6, both the high temperature and low temperature heaters H1 and H2 are turned off, and thus the drum internal temperature TH ) Drops below the fourth set temperature (T4). On the contrary, when it is determined that the sensed temperature value TH is higher than the sixth set temperature T6, the high temperature and low temperature heaters H1 and H2 are both turned off so that the drum internal temperature is maintained within another set temperature range. 3 Control phase is entered.

Here, in the second control step, after all the heaters are turned off, by the on-off control of the low temperature heater (H2), the drum internal temperature is lowered below the fourth set temperature (T4), and then the fourth set temperature ( T4) to be maintained within the fifth set temperature (T5) range.

On the other hand, when the drum internal temperature is higher than the sixth set temperature T6 and the drying process enters the third control step, both the high temperature heater and the low temperature heaters H1 and H2 are turned off (ST450). Thereafter, it is determined whether or not the drum internal temperature TH is lower than the fourth set temperature T4 (ST460). That is, the heater remains off until the drum internal temperature drops below the fourth set temperature T4.

On the other hand, when it is determined that the drum internal temperature TH detected by the temperature sensor has dropped below the fourth set temperature T4, the high temperature heater H1 is turned on (ST470). When the high temperature heater H1 is turned on, the controller determines whether drying is complete (ST480), and when it is determined that drying is completed, the entire drying process is terminated.

On the other hand, when drying is in progress, it is again determined whether the drum internal temperature TH is higher than the fifth set temperature T5 (ST490). In detail, when the drum internal temperature TH is higher than the fifth set temperature T5, the high temperature and low temperature heaters H1 and H2 are both turned off to repeatedly fall below the fourth set temperature T4. Then, when the drum internal temperature TH is lower than the fifth set temperature T5, drying is continued while the high temperature heater H1 is turned on.

As described above, in the third control step, the drum internal temperature TH is equal to the fourth set temperature T4 and the third temperature by the on-off control of the high temperature heater H1 while the heaters H1 and H2 are both turned off. It is characterized in that it is maintained within the 5 set temperature (T5) range.

By the temperature control method and the heater on-off control method according to the temperature sensor composed of a plurality of steps as described above, there is an advantage that the safety of the temperature sensor is secured.

5 is a flowchart illustrating a control method for further securing the stability of the drying drum in the filter clogging detection control method according to the spirit of the present invention.

Referring to FIG. 5, the number of occurrences of the filter replacement notification signal generated during the drying process is accumulated and stored in the memory of the controller. When the number of occurrences of the filter replacement notification signal reaches the set number when the next drying process starts, By automatically stopping the operation, it is characterized by preventing the risk of fire.

In detail, power is supplied to the dryer (ST600), and a user inputs a drying condition through a key input unit and presses an operation button to input an operation command (ST610). Then, the controller 100 uploads the number of occurrences of the filter replacement notification signal accumulated through the drying process previously performed (ST620).

In more detail, when the number of occurrences of the filter replacement notification signal uploaded to the controller 100 reaches a set number (a), the controller 100 generates an error signal (ST640), and the error signal is displayed on the display unit. Through the outside. Here, the error signal may be a signal in the form of voice, light or text. After the error signal is generated, the operation of the dryer is stopped (ST650).

On the other hand, when the number of occurrences of the filter replacement notification signal does not reach the set number (a), a drying process is performed according to the filter clogging detection algorithm shown in FIG. 3 (ST660). Then, it is determined in real time whether the filter replacement notification signal is generated in the course of the drying process (ST670). In detail, when the filter replacement notification signal is generated, the number of occurrences is accumulated and stored in the memory 120 (ST680). Then, it is determined whether the drying is completed (ST690), if the drying is completed, the operation of the dryer is stopped, and if the drying is not completed, another drying process is repeatedly performed in the filter clogging detection algorithm.

On the other hand, when the filter replacement notification signal does not occur, a drying process according to the set drying conditions is performed.

By the above algorithm, even when the filter replacement notification signal is repeatedly generated, there is an effect of preventing the risk of fire due to not replacing the filter.

By the filter clogging detection control method of the dryer constituting the above configuration, by the filter clogging is quickly detected, to inform the user, there is an effect of preventing the inside of the drum overheating. Furthermore, the phenomenon of overheating of the drum is prevented, thereby preventing the risk of fire in advance.

In addition, if a signal for warning the filter clogging occurs a predetermined number of times, even if the operation button is pressed by the dryer does not operate, there is an effect that can prevent the occurrence of fire in advance.

Claims (17)

Starting the drying process according to the operation command input; Determining whether the filter is clogged according to a difference between the temperature detected by the high temperature sensor and the low temperature sensor and a temperature value detected by the high temperature sensor; Determining whether a filter replacement notification signal is generated according to whether the filter is clogged; The method of controlling the filter clogging detection of the dryer according to the elapsed time of the drying process at the time determined as the filter clogging, determines whether to continue the drying process after generating the filter replacement notification signal. The method of claim 1, When the difference value between the temperature detected by the high temperature sensor and the low temperature sensor is greater than the set value, and the temperature detected by the high temperature sensor is higher than the set temperature, it is determined that the filter is clogged, and the filter replacement notification signal is generated. How to control filter clogging in the dryer. The method of claim 2, The difference value is 90, wherein the set temperature is 140 degrees Celsius filter clogging detection control method of the dryer, characterized in that. The method of claim 1, And the filter replacement notification signal is generated after the cooling process is performed when the elapsed drying time at the time determined to be the filter clogging is smaller than the set time. The method of claim 4, wherein In the cooling process, the heater is turned off, and the filter clogging detection control method of the dryer, characterized in that the process of rotating only the fan and the drying drum is performed. The method of claim 1, When the elapsed drying time at the time determined as the filter clogging is less than the set time, the filter replacement notification signal is generated when the cooling process is performed and the temperature detected by the low temperature sensor is lower than the set temperature. Filter clogging detection control method. The method of claim 6, The set temperature is 47 degrees Celsius filter clogging detection control method of the dryer, characterized in that. The method of claim 1, And if the elapsed drying time at the point of time determined as filter clogging is less than the set time, the drying process is stopped after the filter change notification signal is generated. The method of claim 1, If the elapsed drying time at the time determined to be filter clogging is greater than the set time, the filter clogging detection control method of the dryer, characterized in that the drying process proceeds according to the safety control process after the filter replacement notification signal is generated. The method of claim 9, The stability control process, the temperature inside the drum to be maintained within a specific temperature range by the on-off control of the heater, Filter clogging detection control method of the dryer, characterized in that a plurality of temperature range is set according to the degree of overheating inside the drum. The method of claim 1, The filter clogging detection control method of the dryer, characterized in that the occurrence number of the filter replacement notification signal is stored in the memory unit. The method of claim 11, When the drying process ends and the next drying starts, the number of occurrences of the filter replacement notification signal stored in the memory unit is uploaded. The method of controlling the filter clogging detection of a dryer, wherein the operation of the dryer is automatically stopped with an error indication when the number of uploaded occurrences reaches the set number of times. Inputting an operation command of the dryer; Uploading the accumulated number of filter replacement notification signals; The filter clogging detection control method of the dryer includes a step of determining whether the operation continues or stops the operation according to the number of uploaded filter replacement notification signal. The method of claim 13, When the number of times the filter replacement notification signal is uploaded is less than the set number, the drying process is performed according to the filter clogging detection algorithm, and when the filter replacement notification signal is generated during the drying process, the number of occurrence of the filter replacement notification signal is stored in the memory unit. How to control filter clogging detection The method of claim 14, The filter clogging detection algorithm, the filter clogging detection control method of the dryer, characterized in that it is determined whether to continue the drying process after generating the filter replacement notification signal, according to the elapsed time of the drying process at the time determined as the filter clogging. The method of claim 14, The filter clogging detection algorithm is characterized in that whether the filter clogging is determined by the difference between the temperature detected by the low temperature sensor and the high temperature sensor provided in the front and rear of the drying drum, respectively, and the temperature value detected by the high temperature sensor. How to control filter clogging in the dryer. The method of claim 13, When the number of times the filter replacement notification signal is uploaded reaches the set number of times, an error signal is displayed by at least one of a voice, a light, and a text, and the drying process is forcibly stopped. .

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