KR101168888B1 - Method for compensating electric power interrruption in clothes dryer - Google Patents

Abstract

The present invention, the first step of supplying hot air to the drum containing the dried object to dry; A second step of measuring the dryness of the dry matter; And a third step of supplying and drying cold air into the drum when the degree of dryness measured in the second step satisfies a preset set value, wherein the power failure is performed in the third step. And when the recovery occurs, it provides a clothes dryer control method for proceeding the process of supplying and drying the cold air into the drum. The present invention is characterized in that it is possible to prevent the overdried by being dried by not repeating the hot air drying in the case of power failure in the cold air drying step, and then recovering again.

Dryer, Blackout Compensation, Hot Air Drying, Cold Air Drying

Description

Outage compensation control method of clothes dryer {METHOD FOR COMPENSATING ELECTRIC POWER INTERRRUPTION IN CLOTHES DRYER}

The present invention relates to a clothes dryer, and more particularly, to a clothes dryer having a means for compensating for a power failure during operation of the clothes dryer and a control method thereof.

In general, the clothes dryer is a device for drying laundry by putting laundry in a state where the washing is completed and the dehydration process is completed into the drum of the dryer, and supplying hot air into the drum to evaporate the moisture of the laundry.

In the construction of the dryer, the dryer includes a drum inside the dryer into which laundry is put, a driving motor for driving the drum, a blowing fan for blowing air into the drum, and a heating means for heating the air introduced into the drum. Is done. The heating means may use high temperature electrical resistance heat generated by using electrical resistance, or combustion heat generated by burning gas.

Then, the dryer is the air exiting the drum will have the moisture of the laundry inside the drum to become air of high temperature and high humidity. At this time, the dryer can be classified according to the method of treating the high temperature and high humidity air, and the high temperature and high humidity air is circulated without being discharged to the outside of the dryer, so that heat exchange with the outside air occurs in the condenser so that it is contained in the high temperature and high humidity air. It is divided into a condensation dryer for condensing water and an exhaust dryer for directly discharging the air of a high temperature and high humidity passing through the drum to the outside.

And, such a dryer is provided with a variety of drying courses, if the user selects a specific drying course of these, the control unit of the dryer proceeds to the pre-input course automatically proceeds to the drying administration. In general, a drying course is provided by supplying hot air heated by a heater into a drum to remove moisture of clothing, which is a dry product, and supplying air to the drum from the end state after the heater is finished. It can be divided into cold air drying to cool to temperature. In the automatic drying operation, a humidity sensor is installed inside the drum to determine when the hot air drying is completed. When the humidity of the dried object detected by the humidity sensor falls below a predetermined level, the hot air drying operation is completed and the cold air drying operation step is entered.

In addition, if a sudden power failure or a case in which the user turns off the power while the dryer is in operation, the power is supplied to the dryer again, there is a problem of repeating the process already being performed. In particular, when the dryer is out of power during the cold air drying operation and the power is supplied again, there is a problem in that the dry item is overdried by repeating the hot air supply operation that has already been performed.

In order to solve the above problems, the present invention aims to prevent the drying operation from repeating from the beginning even if power is supplied to the dryer again after a sudden power failure occurs during operation of the dryer. It is an object to provide means to prevent drying.

The present invention for the above purpose, the first step of supplying hot air to the drum containing the dry to dry; A second step of measuring the dryness of the dry matter; And a third step of supplying and drying cold air into the drum when the degree of dryness measured in the second step satisfies a preset set value, wherein the power failure is performed in the third step. And when the recovery occurs, it provides a clothes dryer control method for proceeding the process of supplying and drying the cold air into the drum.

By the above configuration, when the power failure is performed in the cold air drying step and the power is restored again, the hot air drying is not repeated again, thereby preventing overdried products from being dried.

In addition, the present invention comprises the first step of supplying hot air to the drum containing the dried object to dry; A second step of measuring the dryness of the dry matter; A third step of further supplying hot air into the drum for a predetermined time and drying the drying rate measured in the second step if the preset value satisfies a preset value; And a fourth step of supplying and cooling cold air into the drum when the set time of the third step elapses. In the control method of the clothes dryer, a power failure and a recovery are performed in the third step or the fourth step. When it occurs, it provides a clothes dryer control method for supplying cold air to the drum and proceeding the drying process.

At this time, the dryness of the dry object is measured using an electrode sensor provided in the drum.

In addition, the present invention provides a method for compensating power failure of a clothes dryer, comprising: a first step of determining whether power is supplied to a clothes dryer, whether power is restored to an initial power supply or a power failure state; A second step of proceeding with the selected drying course if the initial power is determined as the first step; A third step of determining a drying operation immediately before the power failure when the first step is determined that the power failure is restored; And a fourth step of performing cold air drying again if the drying operation immediately before the blackout is determined as the result of the third step, wherein the cold air drying is performed by a heater of the dryer. It is a process of drying the object by blowing air into the drum in the off state.

In addition, if the drying operation immediately before the power failure is the additional drying result, the third step provides a method for compensating the power failure of the clothes dryer for performing cold air drying, wherein the additional drying is a preset drying degree of the dry item accommodated in the drum. When the set value is satisfied, the hot air is further supplied to the drum for a predetermined time and dried.

In addition, if the drying operation immediately before the power failure is hot air drying, the third step provides a method for compensating the power failure of the clothes dryer for performing hot air drying, wherein the hot air drying is heated inside the drum while the heater of the dryer is on. It is a process of drying the dry object by blowing the air which has been made.

The object of the present invention is to prevent the drying operation from repeating from the beginning even if power is supplied to the dryer again after a sudden power failure occurs during the operation of the dryer. It is an object to provide a means to prevent this.

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

Referring to Figure 1, the dryer 100 according to an embodiment of the present invention is provided with a cabinet constituting the appearance of the device, the front of the cabinet door 106 for injecting the clothes to be dried inside The opening is opened and closed by). And, behind the upper surface of the dryer, an operation panel 108 in which various operation buttons for operating the dryer are arranged is located. In this drawing, the operation panel 108 is disposed at the rear of the upper portion, but may be disposed at the upper front side.

The drum 120 is rotatably installed in the cabinet to accommodate a drying object therein, and the drum 120 is rotatably supported by the supporter at the front and the rear. In addition, the drum 120 is connected to the driving motor 150 provided at the lower portion of the dryer by the power transmission belt 122 to receive the rotational force. In addition, a suction duct 130 is installed at the rear of the drum 120, and a heater 140 is installed at an inlet of the suction duct 130 to heat the sucked air. In addition, a filter 180 that filters foreign matters such as lint contained in the air discharged from the drum 120 is installed at the front lower side of the drum 120, and after filtering the foreign matter, the air is completely discharged to the outside of the dryer. 170 and 190 are installed.

In addition, an electrode sensor 200 for measuring the humidity of the object to be dried is installed at a portion where air is discharged from the drum. When the object touches the electrode of the electrode sensor, the current flows smoothly between the electrodes due to the moisture of the object, so the resistance value is lowered. On the contrary, when the dryness of the object is high, the electrode is touched even if the electrode is touched. Since no current flows between them, the resistance value increases, and the electrode sensor determines the dryness of the object to be dried using this principle. That is, in the same principle as described above, the electrode sensor 200 provides a resistance value measured due to the object to the controller (not shown), and the controller controls the clothes dryer based on the resistance value.

Hereinafter, a control structure of the clothes dryer having such a configuration will be described with reference to FIG. 2.

Various drying courses are previously input to the control unit 300 of the dryer. When the user selects one of the drying courses through the key input unit 310 provided in the operation panel, the control unit of the dryer performs this in a predetermined order. Done. When power is supplied to the dryer through the power supply unit 350 and one of the drying courses is selected through the key input unit 310 by the user, the control unit performs the load driving unit 360 or the option unit 370 to perform the selected course. Etc. to drive various loads and to perform additional functions. In addition, the interrupter generating unit 330 generates an interrupter signal and transmits the interrupter signal to the control unit 300 when a situation occurs to be processed in advance of the general operation during the drying operation. The controller receives the interrupter signal and controls the load driving unit or the option unit to immediately stop the drying operation.

If the power is supplied again after a sudden power failure during the operation of the dryer, the operation will be performed again. For this purpose, the operation is stored in the memory of the controller so that the operation is not performed from the beginning. Compensation.

Hereinafter, referring to FIG. 3, a method of controlling the dryer when a power failure is performed and a power recovery is performed during the operation of the dryer will be described with reference to FIG. 3.

First, when the drying course selected by the user starts, typically, the hot air drying step (S10) proceeds to the cold air drying step (S30). In addition, an additional drying step (S20) may be included between the hot air drying step and the cold air drying step.

Hot air drying step (S10), by heating the air flowing in the state in which the heater 140 provided inside the dryer to make a hot air of high temperature to supply to the drum 120. Then, the hot air supplied to the drum absorbs the moisture of the dry matter contained in the drum, and the drying process is performed. At this time, the drum 120 is rotated at a constant speed by the motor of the dryer lower to facilitate the drying of the dry matter.

The end point of the hot air drying step is determined by the dryness of the dry matter. In the drum, the air discharge part is provided with an electrode sensor 200 to measure the dryness of the dried object. At this time, when the measured dryness reaches a preset value, the hot air drying step ends and proceeds to the next step. .

Additional drying step (S20) is even after the hot air drying step is completed, the hot air is continuously supplied to the drum 120 while the heater 140 is turned on for a predetermined time, this process is called an additional drying step. After the completion of the hot air drying step, the hot air is supplied for a certain time in order to improve the dryness of the dry goods even after the dryness of the dry goods reaches a certain level. The end of the additional drying step is terminated after a predetermined time elapses. Additional drying step (S20) can be carried out selectively. In other words, depending on the drying course may proceed to the cold air drying step without additional drying step.

Cold air drying step (S30) refers to a process of supplying air while rotating the drum in a state in which the heater 140 is turned off after the additional drying step is completed. During the cold air drying step, the inside of the drum is cooled to a temperature at which the user can take out the dry item.

However, if the power failure occurs after entering the additional drying step (S20) or the cold air drying step (S30) and then recovering, the hot air drying step is performed instead of performing the hot air drying step again.

That is, the drying degree of the dried product is measured while performing a hot air drying step of supplying and drying hot wind to a drum containing the dried product. At this time, if the measured dryness satisfies the set value of the preset dryness, the hot air drying step ends. Then, the additional drying step to the cold air drying step proceeds at this time, if a power failure occurs and the recovery occurs, the control unit of the dryer to perform the cold air drying step. That is, a process of drying by supplying cold air into the drum while the heater of the dryer is turned off. Therefore, when the power failure in the additional drying step or cold air drying step is restored again, the hot air drying is not repeated, thereby preventing overdried from being dried.

In addition, the present invention relates to a method for compensating a power failure of a clothes dryer, and when power is applied to the clothes dryer, the controller 300 first determines whether the power is restored to the initial power source or the power failure state. As a result of the determination, if the initial power source is selected, the selected drying course is performed. To this end, the storage device of the control unit must store the drying process being performed during the drying operation. Preferably, not only the type of drying operation being performed but also the time performed may be stored.

And, in the case of power failure and recuperation, if the drying administration immediately before the power failure was a cold wind drying step, cold wind drying is performed again. In addition, in the case of power failure and recuperation, if the drying administration immediately before the power failure was an additional drying step, cold air drying is performed. Then, in the case of power failure and recovery, if the drying administration immediately before the power failure was a hot air drying step, hot air drying is performed again.

1 is a longitudinal sectional view of a dryer according to an embodiment of the present invention,

2 is a control structure of the dryer according to an embodiment of the present invention,

3 is a flowchart of power failure compensation according to an embodiment of the present invention.

Claims (12)

A first step of drying the dry item by supplying hot air to a drum containing the dry matter; A second step of measuring the dryness of the dry matter; And And a third step of supplying cold air into the drum to dry the dried object when the dryness measured in the second step satisfies a preset value. The method of controlling a clothes dryer according to claim 3, wherein when the blackout and the power recovery occur, the process of drying the dry item by supplying cold air into the drum is performed after the time just before the blackout. A first step of supplying hot air to a drum accommodating the goods to be dried and drying it; A second step of measuring the dryness of the dry matter; A third step of further supplying hot air into the drum for a predetermined time and drying the drying rate measured in the second step if the preset value satisfies a preset value; And And a fourth step of supplying cold air into the drum and drying the set time after the set time of the third step. When the power outage and recovery in the third or fourth step, the clothes dryer control method characterized in that the process of supplying cold air to the drum and drying the process. 3. The method according to claim 1 or 2, Drying degree of the dry object, the control method of the clothes dryer, characterized in that by using an electrode sensor provided in the drum. In the clothes outage compensation method of the clothes dryer, A first step of determining whether power is supplied to the clothes dryer, whether the power is restored to the initial power supply or the power failure state; A second step of proceeding with the selected drying course if the initial power is determined as the first step; A third step of determining a drying operation immediately before the power failure when the first step is determined that the power failure is restored; And And a fourth step of performing the cold air drying again after the time immediately before the blackout if the drying operation immediately before the blackout is determined as the result of the third step. The method of claim 4, wherein The cold air drying, the electrostatic compensation method of the clothes dryer, characterized in that for drying the dried goods by blowing air into the drum in the heater of the dryer off. delete delete The method of claim 4, wherein And determining that the drying operation immediately before the blackout is hot air drying, wherein the hot air drying is performed again after the time just before the blackout. 9. The method of claim 8, The hot air drying, the electrostatic compensation method of the clothes dryer, characterized in that for drying the dried object by blowing the air heated in the drum in the heater state of the dryer. 5. The method of claim 4, And storing the type of drying operation being performed and the time performed at every predetermined time. In the clothes outage compensation method of the clothes dryer, A first step of determining whether power is supplied to the clothes dryer, whether the power is restored to the initial power supply or the power failure state; A second step of proceeding with the selected drying course if the initial power is determined as the first step; A third step of determining a drying operation immediately before the power failure when the first step is determined that the power failure is restored; And If the drying operation immediately before the blackout is a result of the determination of the third step, the cold air drying is carried out, characterized in that for performing a power outage compensation of the clothes dryer. The method of claim 11, wherein The additional drying is the electrostatic compensation method of the clothes dryer, characterized in that the drying by supplying hot air to the drum for a predetermined time when the dryness of the dry items contained in the drum satisfies a predetermined set value.

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