KR101203850B1 - Method for controlling course of clothes drier - Google Patents

Abstract

The present invention relates to a stroke control method of the clothes dryer for providing a stable product in preparation for the abnormality of the sensors required for the stroke control, the high temperature heater and the low temperature for a predetermined first set time after entering the drying stroke Driving all of the heaters; Driving only a high temperature heater in a state in which the low temperature heater is turned off when the first set time elapses; Determining whether the drying is completed according to the degree of drying of the object to be dried, and determining whether or not a predetermined second set time has elapsed; As a result of the determination, if the drying process is not completed until the second set time elapses, it is determined that the electrode sensor and the temperature sensing sensor are abnormal and turn off both the high temperature heater and the low temperature heater.

Therefore, the present invention can improve the safety and reliability of the product by controlling the stroke in preparation for a safety accident due to a sensor failure.

Clothes dryer / electrode sensor / temperature sensor / heater control

Description

Method for controlling course of clothes drier

1 is a longitudinal sectional view showing a structural example of a general condensation type clothes dryer

Figure 2 is a cross-sectional view of the main part of the condensation type clothes dryer of Figure 1

Figure 3 is a flow chart showing a stroke control method of the condensation type clothes dryer according to the invention

DESCRIPTION OF THE REFERENCE NUMERALS

15a: first heater 15b: second heater

30: electrode sensor

40a: first temperature detector 40b: second temperature detector

The present invention relates to an administrative method of a condensation type clothes dryer, and more particularly, to an administrative control method of a clothes dryer for providing a stable product in preparation for abnormalities of sensors required for administrative control.

In general, a clothes dryer is a device that blows hot air generated by a heater into a drum to dry a drying object, and is largely an exhaust type clothes dryer and a condensation type according to a treatment method of wet air generated by drying a drying object. It is classified as a clothes dryer.

The exhaust type clothes dryer uses a method of discharging the wet air discharged from the drum to the outside of the dryer, and the condensation type clothes dryer removes moisture by condensing the wet air discharged from the drum in the condenser, and the dried air is removed from the drum. Send and recycle.

The structure of the condensation type clothes dryer will be described with reference to FIGS. 1 and 2 as follows. Arrow I in the figure shows the flow of outside air, arrow II shows the flow of circulating air.

As shown in the drawing, a drum 11 in which a drying object is accommodated is rotatably installed in a main body 10 having a door 12 installed at a front surface thereof, and the drum 11 is a motor installed under the main body 10. It is connected to the belt 19 by 17 and is comprised so that it may rotate.

In addition, a condenser 13 is installed below the main body 10 to condense the hot and humid air circulating through the drum 11 to remove the moisture to make the circulated air dry. The front part and the rear part are connected to the circulation duct 14 connected to the front and the rear of the drum 11, respectively, and the air discharged through the drum 11 passes through the condenser 13 and flows back into the drum 11 again. It is configured to be.

In addition, the circulation duct 14 is provided with a heater 15 for heating the air passing through the condenser 13 and a circulation fan 16 for forcibly circulating the air through the circulation duct 14, The circulation fan 16 is configured to drive in connection with the other shaft of the motor 17 for driving the drum 11.

In this case, a coil heater is mainly used as the heater 15, and includes a first heater 15a composed of a heating coil of 1800W and a second heater 15b composed of a heating coil of 700W. By selectively controlling the first heater 15a and the second heater 15b, the temperature of the circulating air can be varied.

On the other hand, in order to condense the air circulated through the circulation duct 14 by heat exchange in the condenser 13, the external cold air must be supplied to the condenser 13, one side of the condenser 13 for this purpose The outside air supply duct 18 connected to the outside of the main body 10 is connected to the opposite side of the condenser 13 to which the outside air supply duct 18 is connected to forcibly sucks outside air through the outside air supply duct 18. 10) The cooling fan 20 and the cooling fan drive motor 21 for discharging into are installed.

In addition, a lower portion of the condenser 13 is a drip tray (not shown) for collecting condensed water generated and dropped during the condensation process, and a condensate storage tank for forcibly discharging the condensed water collected in the drip tray to the outside or installed in the main body 10. The pump 23 conveying by (not shown) is provided.

In addition, an electrode sensor 30 is installed at the front lower side of the drum 11 to detect the humidity of the drying object. The drying operation is controlled by determining the degree of drying of the drying object according to the humidity sensed by the electrode sensor 30.

And, the temperature control of the flow air required for drying is achieved by controlling the on / off of the heater 15 in accordance with the temperature level detected by the temperature sensor.

To this end, the first temperature sensing unit 40a is installed at a position adjacent to the lint filter 22 in front of the drum 11, and the second temperature sensing unit 40b is positioned at a position adjacent to the heater 15 behind the drum 11. Will be installed.

The first and second temperature sensing units 40a and 40b configured as described above sense the temperature of the air flowing during the stroke and control the driving of the heater 15 according to the sensed temperature level.

However, the electrode sensor for determining the dryness or the temperature sensing sensor for determining the temperature of the flow air cannot detect the dryness and air temperature when the sensor malfunctions or defects are caused by the life of the product or various causes. do.

For this reason, if the dryness and the flow air temperature are not detected during the stroke, not only the control of the dryness or temperature is carried out, but also the safety of the burner or the part of the door melting due to the continuous heating of the heater. There was a risk of this.

The present invention is to solve the above problems, an object of the present invention is to provide a stroke control method of the clothes dryer for providing a stable product in preparation for the abnormality of the sensors required for stroke control.

In order to achieve the above object, the present invention comprises a heater for heating the flow air in the drum consisting of a high-temperature heater and a low-temperature heater, an electrode sensor for detecting the drying degree of the drying object, the flow of air heated by the heater A clothes dryer having a temperature sensor for sensing a temperature, the method comprising: driving both the high temperature heater and the low temperature heater for a preset first set time after entering a drying stroke; Driving only a high temperature heater in a state in which the low temperature heater is turned off when the first set time elapses; Determining whether the drying is completed according to the degree of drying of the object to be dried, and determining whether or not a predetermined second set time has elapsed; As a result of the determination, if the drying stroke is not completed until the second set time elapses, the operation of the clothes dryer includes determining that the electrode sensor and the temperature sensing sensor are abnormal and turning off both the high temperature heater and the low temperature heater. Provide control method.

In the determining of whether the drying is completed, it is preferable to determine whether the drying degree detected by the electrode sensor reaches a target value.

The present invention further includes the step of turning off both the high temperature heater and the low temperature heater after the electrode stroke and the temperature sensing sensor recognize the normal state when the drying stroke is completed before the second set time elapses. It provides an administrative control method of the clothes dryer.

In addition, the second set time is characterized in that the drive time limit (limit time) to limit the continuous operation of the heater.

Therefore, according to the present invention it is possible to ensure the product stability due to sensor failure by determining whether the sensor abnormality, such as the electrode sensor and the temperature sensor through the time the heater is continuously driven, and control the stroke according to the determination result. .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

Clothes dryer component of the present invention is the same as in the prior art for the convenience of description will be given the same name and the same reference numerals.

First, a condenser 13 is installed below the main body 10 to condense the hot and humid air circulating through the drum 11 to remove moisture.

In addition, a heater 15 composed of a high temperature heater and a low temperature heater is configured in the circulation duct 14 to heat the dry air that has passed through the condenser 13.

At this time, the high temperature heater corresponds to the first heater 15a composed of a heating coil of 1800W and the low temperature heater corresponds to the second heater 15b composed of a heating coil of 700W.

In addition, the electrode sensor 30 is installed on the front lower side of the drum 11 to detect the humidity of the drying object in order to determine the drying degree of the drying object dried by hot air.

The first temperature sensing unit 40a, which is a low temperature temperature sensor, is installed at a position adjacent to the lint filter 22, and the second temperature sensing unit 40b, which is a high temperature temperature sensor, is a heater 15 behind the drum 11. It is installed at the position adjacent to the.

The present invention, according to the continuous driving time of the heater 15 detects a failure of the temperature sensor constituting the electrode sensor 30 and the first and second temperature sensing unit (40a, 40b) to the sensor defect If it is determined that the operation to protect the system is made.

In the condensation type clothes dryer of the above configuration, the administrative control method of the clothes dryer according to the present invention will be described with reference to FIG.

First, when a user inputs a drying object in a wet state into the drum 11 and starts an operation for a drying stroke, both the first and second heaters 15a and 15b are driven to perform a drying stroke using hot air. (S10).

In detail, the motor 17 is driven to rotate the circulation fan 16 and the drum 11 and to drive the heater 15. Accordingly, air flows through the circulation duct 14. The air flowing through the circulation duct 14 is heated to a high temperature by the heater 15 and then flows into the drum 11.

On the other hand, the outside air introduced by the cooling fan 20 is supplied to the condenser 13 through the outside air supply duct 18 and then heat exchanged through the condenser 13 to the outside through one side of the main body 10 After being discharged and drying the object to be dried in the drum 11, the hot and humid air is condensed by heat exchange as it passes through the condenser 13 to be dried, and then heated by the heater 15 again to form a drum ( 11) flows into.

In this case, the first and second heaters 15a and 15b are preferentially controlled by a microcontroller (not shown) based on the temperature levels detected by the first and second temperature detectors 40a and 40b. do.

However, when the temperature detection is not normally performed due to a failure of the sensors of the first and second temperature sensing units 40a and 40b, the on / off control of the heater 15 through temperature sensing is not possible. The exothermic state is maintained for a long time.

In addition, by detecting the drying degree of the clothing through the electrode sensor 30, when the detected dryness reaches the target value, it is determined that the drying is completed and stops the driving of the heater 15 to end the stroke. .

However, when it is impossible to determine the degree of drying due to the abnormality of the electrode sensor 30, since the heater 15 cannot be controlled, the heating state of the heater 15 is likewise maintained continuously.

The present invention, in order to prevent the safety accident that may occur if the drive control of the heater 15 is impossible during the drying stroke due to the failure of the electrode sensor 30 or the temperature sensor (40a, 40b) described above. It is.

In detail, the drying degree of the clothing is sensed by the electrode sensor 30 at regular intervals during the stroke while the first and second heaters 15a and 15b are simultaneously driven after entering the drying stroke. The drying stroke is maintained until the degree of drying detected by the electrode sensor 30 reaches a target value.

In addition, it is determined whether the drying administration is not completed, that is, whether the drying degree of the clothing does not reach the target value for a predetermined first set time (for example, 2 hours 20 minutes) (S20). .

At this time, until the drying stroke passes the first set time, the drying stroke for simultaneously driving the first and second heaters 15a and 15b is maintained (S30).

On the other hand, when the drying stroke for simultaneously driving the first and second heaters 15a and 15b passes the first set time, the second heater 15b, which is a low temperature heater, is turned off and the first heater, which is a high temperature heater ( The drying stroke is maintained while driving only 15a) (S40).

Similarly, during the drying stroke for driving only the first heater 15a, the drying is determined using the electrode sensor 30 (S50), and the second preset stroke is performed in a state in which the drying stroke is not completed. It is determined whether the administration continues for the set time (for example, 3 hours 30 minutes) (S60).

At this time, the driving of the first heater 15a is maintained while the second heater 15b is turned off until the drying stroke reaches the second set time after the first set time.

However, when the drying stroke is not completed and the driving of the heater 15 is maintained until the second set time, it is determined that the electrode sensor 30 or the temperature sensing sensors 40a and 40b are abnormal and the first and second heaters ( By turning off all of the 15a) (15b) forcibly stops the drying operation (S70).

Here, the second set time is a drive time limit for limiting continuous operation of the heater 15.

That is, to prevent abnormal phenomenon in which the first and second heaters 15a and 15b are continuously driven for 3 hours and 30 minutes, which is the driving time limit of the heater 15.

Therefore, in the present invention, the driving time limit (second setting time) of the heater 15 has elapsed to determine abnormalities of the electrode sensor and the temperature sensor during the course of the stroke and to prevent safety accidents due to the sensor failure. This will force the administration to stop.

The present invention is not limited to the above-described embodiments, and can be modified by those skilled in the art as can be seen from the appended claims, and such modifications are within the scope of the present invention. .

In the above-described stroke control method of the clothes dryer according to the present invention, if the stroke is maintained longer than the driving time limit of the heater, it is judged as a sensor failure such as an electrode sensor and a temperature sensor and stops the drying operation forcibly.

Therefore, it is possible to improve the safety and reliability of the product by controlling the stroke in preparation for safety accidents due to sensor failure.

Claims (4)

Clothes comprising a heater for heating the flow air in the drum consisting of a high temperature heater and a low temperature heater, an electrode sensor for detecting the drying degree of the object to be dried, and a temperature sensor for sensing the temperature of the flow air heated by the heater In the dryer, Driving both the high temperature heater and the low temperature heater for a preset first set time after entering a drying stroke; Driving only a high temperature heater in a state in which the low temperature heater is turned off when the first set time elapses; Determining whether the drying is completed according to the degree of drying of the object to be dried, and determining whether or not a predetermined second set time has elapsed; As a result of the determination, if the drying stroke is not completed until the second set time elapses, it is determined that the electrode sensor and the temperature sensing sensor are abnormal and turn off both the high temperature heater and the low temperature heater. Administrative control method of clothes dryer. The method of claim 1, The determining of whether the drying is completed, administrative control method of the clothes dryer, characterized in that it is determined whether the degree of drying detected by the electrode sensor reaches a target value. The method of claim 1, If the drying stroke is completed before the second set time elapses, further comprising the step of turning off both the high-temperature heater and the low-temperature heater after the electrode sensor and the temperature sensor is recognized as a normal state Administrative control method of clothes dryer. The method of claim 1, The second set time is a drive limit time (limit time) to limit the continuous operation of the heater, the administrative control method of the clothes dryer.

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