KR100872217B1 - Display apparatus for dryer - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dryer, and more particularly, to a display device for a dryer for controlling an initial display and a blockage degree display of a filter display state portion.

The display device of the dryer of the present invention is a filter state display unit for indicating the degree of clogging or clogging of the filter, a power supply unit for receiving commercial power, and after the commercial power is applied through the power supply unit, the filter state display unit blinks for a predetermined time. In addition, the filter state display unit is turned on to control the display unit to indicate the degree of blockage or blockage of the filter, thereby providing the user with a normal or non-blocking state or blockage of the filter.

Description

Display of dryer {DISPLAY APPARATUS FOR DRYER}

1 is a cross-sectional view of a dryer according to the present invention.

2 is an exploded perspective view of a dryer according to the present invention.

3 is a partial cutaway view of a dryer according to the present invention.

4 is a configuration diagram of a display device of a dryer according to the present invention.

5 is an embodiment of the sensing circuit of FIG. 4.

6 and 7 are graphs of output waveforms of the sensing circuit.

8 is an on / off graph recognized by the microcomputer.

9A and 9B illustrate display embodiments of the display device.

10 is a flow chart of the display method of the dryer according to the present invention.

11A and 11B illustrate embodiments of display degree of clogging of a display device.

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

30: heater 43: blowing fan

80: sensing circuit 72: motor

90: micom

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dryer, and more particularly, to a display device for a dryer for controlling an initial display and a blockage degree display of a filter display state portion.

In general, a dry washing machine includes a main body having a predetermined shape, a drum installed inside the main body, a tub surrounding the drum and collecting wash water, a driving motor for rotating the drum, and a detergent container for injecting detergent. And a water supply pipe connected to the detergent container for supplying the washing water or the washing water mixed with the detergent of the detergent container, a drain pipe for discharging the washing water used in the washing stroke to the outside, and forcibly draining the washing water connected to the end of the drain pipe. It consists of pump and drain hose.

Such a washing machine having a drying function is to wash laundry by friction with the washing water generated by dropping the laundry feeling and washing water into the drum and the washing feeling falling in the direction of gravity when the drum is rotated. In recent years, such a drum washing machine has been added to its function to dry not only laundry but also dry laundry by hot air.

The dry washing machine as described above may be further divided into condensation type and exhaust type, and the condensation type sends heat generated by the heater to the drum side by a blowing fan to dry the laundry in the drum. At this time, the air in the drum drying the laundry is in a high temperature and high humidity state and is moved to the exhaust port communicating with the tub. At this time, one side of the exhaust port is provided with a nozzle for spraying cold water to remove moisture from the high temperature and high humidity air to supply the dry air back to the blowing fan.

In the exhaust type, the hot air generated by the heater and the blower fan is passed through the laundry in the drum, and then the hot air is discharged to the outside of the washing machine through the exhaust port formed at one side of the washing machine. Here, the exhaust port is connected to the corrugated hose that is connected to the tub, the exhaust port serves as a pore when the infant or pet is trapped in the washing machine.

In such a washing machine having an exhaust type drying function, lint (fine lint) is generated in the dryness of the laundry. The lint circulates along the hot air from the drum in the washing machine and is discharged out of the washing machine along the exhaust port.

Lint filter in the exhaust port to prevent lint from blocking the exhaust port due to long-term use of the washing machine by providing a structure that can collect the lint regularly so that lint generated from the feeling of washing after washing does not accumulate in the exhaust outlet discharged to the outside of the washing machine Is fitted.

The dryer according to the prior art recommends cleaning the filter every time the clothes dryer is used, but the filter cleaning is almost neglected due to the inconvenience and hassle of cleaning, and as the drying is performed, the degree of clogging of the filter increases, resulting in a drying time. This increases or increases the power consumption, the more the blockage is severe, the finer lint is not collected in the filter, it can float and cling inside the clothes and dryers to contaminate the clothes. The dryer according to the prior art does not provide any accurate information about the clogging of such filters.

An object of the present invention is to provide a display apparatus and a display method of a dryer for displaying the degree of clogging of the air flow path in which the drying operation is performed in the dryer.

In addition, an object of the present invention is to provide a display device and a display method of a dryer for displaying that the display unit is in normal operation when power is applied.

In addition, an object of the present invention is to provide a display apparatus and a display method of a dryer that visually attracts the user and increases the recognition effect on the degree of blockage of the air flow path.

In the following, the invention is explained in detail by taking a dryer as an example based on the embodiments of the invention and the accompanying drawings. However, the scope of the present invention is not limited by the following examples and drawings, and the scope of the present invention will be limited only by the contents described in the claims below.

1 is a cross-sectional view of a dryer according to the present invention, Figure 2 is an exploded perspective view of the dryer according to the present invention, Figure 3 is a partial cutaway view of the dryer according to the present invention. The present invention uses the exhaust type dryer as an embodiment, but is not necessarily limited to the exhaust type dryer.

As shown in FIG. 1, the exhaust type dryer according to the present embodiment includes a drum 10 disposed inside the cabinet 1 to accommodate a fabric and a suction flow path 20 installed to suck air into the drum 10. And a heater 30 provided on the suction passage 20 and an exhaust passage 40 installed so that the air passing through the drum 10 is exhausted to the outside of the cabinet 1. In addition, when the exhaust type dryer is installed, an external exhaust duct 50 coupled to the exhaust flow passage 40 and passing through the inner wall 60 of the building and the like to exhaust the air to the outside is installed.

The blower fan 43 is provided on one side of the suction flow path 20 and the exhaust flow path 40, and will be described below in that it is provided in the exhaust flow path 40.

As shown in FIGS. 2 and 3, the cabinet 1 includes a base fan 2, a cabinet main body 3 installed on the upper side of the base fan 2, and a cabinet cover provided on the front of the cabinet main body 3. (4), a back panel (7) provided on the back of the cabinet body (3), a top cover (8) provided on the upper surface of the cabinet body (3), and a control panel (9) provided on the top of the cabinet cover (4). It is configured to include).

As shown in FIG. 2, the cabinet cover 4 is formed with a gun entry hole 5 so that the carriage drum 10 can enter and exit and a door 6 for opening and closing the gun entry hole 5 is rotated. Possibly connected. In addition, a control panel 9 is installed at the upper end of the cabinet cover 4. The control panel 9 includes an input unit 9a for acquiring a user's input, and a display unit for displaying the state of the dryer (for example, the drying progress state, the drying progress degree, the remaining drying time, the selection of the drying mode, etc.) 9b). Moreover, the front supporter 11 which mounts the back end of the drum 10 rotatably is mounted in the back of the cabinet cover 4.

In front of the back panel 7, a rear supporter 12 is mounted to support the rear end of the drum 10 in a rotatable manner. The rear supporter 12 is formed with a communication hole 13 for communicating the suction passage 20 and the inlet of the drum 10 so that air passing through the suction passage 20 can be sucked into the inlet of the drum 10. .

2 and 3, the drum 10 is a circular cylinder that is accommodated therein and opened in the front-rear direction so that air passes in the front-rear direction, and the rear opening forms the drum inlet, and the front opening is the drum. Form an outlet. The drum 10 is installed so that the lift 14 protrudes from the inner circumferential surface so that the fabric can be lifted and dropped during rotation.

The suction passage 20 is formed by a suction duct installed so that the lower end communicates with the rear end of the heater 30 and the upper end communicates with the communication hole 13 of the rear supporter 12.

As shown in FIGS. 2 and 3, the heater 30 is disposed on the upper surface of the base fan 2 and arranged in the heater case communicating with the suction passage 20, that is, the suction duct 20, and inside the heater case. When the power is supplied to the heating coil, the inner space of the heater case and the heater case are heated to heat the air passing through the inside of the heater case with high temperature and low humidity air.

As illustrated in FIGS. 2 and 3, the exhaust flow passage 40 is installed to communicate with the drum outlet so that air in the drum 10 may be exhausted, and may filter foreign matter such as seams in the exhausted air. The lint duct 42 in which the lint filter 41 formed in the front support 11 is located, the fan housing 44 in communication with the lint duct 42 and the blowing fan 43 are built-in, and the fan housing ( One end is in communication with 44 and the other end is made by an exhaust pipe 46 extending out of the cabinet 1. The exhaust pipe 46 is connected to an external exhaust duct 50 for guiding outdoor air exhausted to the outside of the cabinet 1. The external exhaust duct is formed outside the cabinet 1 to direct air to the external space and can pass through the building inner wall 60.

The air flow path used in the present invention includes a suction flow path 20, an internal space of the drum 10, an exhaust flow path 40, and an external exhaust duct 50, and the clogging of the air flow path is the exhaust flow path 40. Mainly occurs in the lint filter 41 and the external exhaust duct 50. The degree of obstruction of air flow due to the blockage of the lint filter 41 of the exhaust passage 40 is relatively smaller than the degree of obstruction of air flow due to the blockage of the external exhaust duct 50.

The operation of the exhaust dryer is an embodiment of the present invention is as follows.

First, after the cloth is introduced into the drum 10, the door 6 is closed, and the control panel 9 is operated to operate the exhaust dryer, and the exhaust dryer turns on the heater 30 and the motor. Drive 72.

When the heater 30 is turned on, the heater 30 heats the inside, and when the motor 72 is driven, the belt 70 and the blowing fan 43 rotate. When the belt 70 rotates, the drum 10 is rotated, and the artillery in the drum 10 is lifted up by the lift 14 and then repeatedly drops.

When the blowing fan 43 is rotated, air outside the cabinet 1 is sucked into the air suction hole 7a of the back cover 7 by the blowing force generated when the blowing fan 43 is rotated, and the cabinet 1 ) And the drum 10. The air between the cabinet 1 and the drum 10 changes into high temperature and low humidity as it enters the heater 30 and is heated, and thereafter, the drum passes through the communication hole 13 of the suction flow path 20 and the rear supporter 12. It is sucked into the inside of 10.

The high temperature and low humidity air sucked into the drum 10 is brought into contact with the cloth while moving toward the front of the drum 10, and changes to high humidity. Then, the air is exhausted into the exhaust passage 40.

Air exhausted to the exhaust flow passage 40 passes through the exhaust pipe 46 as it is and is exhausted to the outside through the external exhaust duct 50.

4 is a configuration diagram of a display device of a dryer according to the present invention. The display device illustrated in FIG. 4 receives first external commercial power and is supplied to the heater 30, but is turned on / off according to the temperature of the heater 30 or the temperature of the air heated by the heater 30. Commercial power is applied to the heater 30 by being turned on and off by the second thermostat TS1 and TS2 (hereinafter, may be referred to collectively as a 'temperature control member') and a control command of the microcomputer 90. Switch SW, input unit 9a, display unit 9b, heater 30, blower fan 43, motor 72, first and second thermostat TS1, A sensing circuit 80 that determines whether power is supplied to the heater 30 according to the on / off of TS2, first and second thermostats TS1 according to a power supply state from the sensing circuit 80, The microcomputer 90 determines whether or not TS2 can be operated. However, although a power supply unit for supplying a DC power source used for the microcomputer 90, the input unit 9a, the display unit 9b, and the like from a commercial power source is not shown, such a power supply unit is natural to those familiar with the technical field to which the present invention belongs. Is just a technique.

The first and second thermostats TS1 and TS2 are kinds of adjustment units according to a temperature, and are mounted on or near the heater 30 to be heated by the heater 30 or the temperature of the heater 30. In response to the temperature of the air, it maintains the on state before reaching a predetermined overheating temperature, and when the overheating temperature is exceeded, the state is turned off so that commercial power is not applied to the heater 30. In particular, the first thermostat TS1 does not return to the on state once it is turned off to complement the second thermostat TS2. The first and second thermostats TS1 and TS2 are mounted to the suction passage 20 connected to the heater 30, for example.

In addition, the switch SW is configured of an element such as a relay, and maintains an on state during the drying operation according to the on control of the microcomputer 90, and maintains an off state according to the off control of the microcomputer 90.

In addition, the input unit 9a receives a control command related to a drying operation from a user and applies it to the microcomputer 90.

In addition, the display unit 9b displays not only the input for the drying operation input by the user, the progress of the drying operation, the remaining time, but also the degree of blockage of the air flow path, the blocked portion, and the like. The display unit 9b may be implemented as an LED device or an LCD device. In the present specification, the air passage includes a suction passage 20, a drum 10, an exhaust passage 40, and an external exhaust duct 50, and in particular, the lint filter 41 and the external exhaust in the exhaust passage 40. It may also refer to the duct 50.

In addition, the display portion 9b may separately display the blockage of the lint filter 41 and the blockage of the exhaust duct 50, respectively. In this embodiment, the display portion 9b displays the degree of clogging of the lint filter 41.

In order to display the degree of blockage, the display portion 9b is composed of a single level portion or a plurality of level portions in order to display at least two or more levels of blockage, and the degree of blockage is determined by turning on, turning off, and flashing the level portion. Display. In the case of the single level part, it is displayed when the preset blockage threshold value exceeds the current blockage degree. In addition, the plurality of level units may be configured to blockage thresholds according to the level units, and to display a display corresponding to the current degree of blockage.

The sensing circuit 80 is connected to the nodes N1 and N2, respectively, to determine whether a current flows through the series circuit including the heater 30, that is, whether power is supplied to the heater 30. For this determination, the sensing circuit 80 is connected to the nodes N1 and N2 by the connecting lines 80a and 80b, respectively. Since the sensing circuit 80 is mounted on the control panel 9 in which the microcomputer 90 is mounted, the connecting lines 80a and 80b are formed in the inner space between the drum 10 and the cabinet body 3 or in the cabinet body 3. Proceed along the inner surface of

More specifically, the sensing circuit 80 supplies power to the heater 30 by the on / off operation of the first and second thermostats TS1 and TS2 operating according to the temperature of the heater 30 or air. Is to determine if it is supplied. Of course, the power supply to the heater 30 is also controlled by the switch SW, but since the switch SW is operated by the control of the microcomputer 90, the microcomputer 90 is in the switch SW state. In this case, the power supply state is checked according to the signal from the sensing circuit 80. When the switch SW is turned off by the microcomputer 90, the microcomputer 90 does not consider the signal applied from the sensing circuit 80.

 The sensing circuit 80 applies different signals to the microcomputer 90 according to the power supply state, so that the microcomputer 90 can check the power supply state of the heater 30. Unlike FIG. 5, the input terminal of the sensing circuit 80 may be connected between the first thermostat TS1 and a commercial power supply, and between the heater 30 and the switch SW. In a series circuit composed of the commercial power source, the first and second thermostats TS1 and TS2, the heater 30, and the switch SW, the potential difference across the heater 30 is the most depending on the supply of the commercial power source. As can be clearly identified, the sensing circuit 80 is always connected to sense the potential difference of the portion in which the heater 30 is included.

As described above, the microcomputer 90 basically controls the heater 30, the switch SW, and the motor 72 according to a user's command through the input unit 9a, and controls the motor 72. The blowing fan 43 is controlled to perform a drying operation. In addition, the microcomputer 90 has a storage unit (not shown) for storing such a control algorithm, for example, the EEPROM may be used.

The microcomputer 90 and the sensing circuit 80 are mounted on the rear of the control panel 9 described above.

In addition, the microcomputer 90 determines information on power supply and shutdown by the first and second thermostats TS1 and TS2 according to the detection signal from the sensing circuit 80.

5 is an embodiment of the sensing circuit of FIG. 4. As shown in FIG. 5, the sensing circuit 80 depressurizes the diode D1 for applying a positive voltage from the input voltage from the node N1 and the input voltage from the node N1. The resistor R1, the noise preventing diode D2 and the capacitor C1 included in the input voltage applied to the input terminals I1 and I2 of the photo coupler PC, and the photo coupler turned on / off according to the input voltage And a different voltage waveform below the reference voltage Vref, which is a DC voltage, to the microcomputer 90 when the photo coupler PC is connected to the output terminal O1 of the photo coupler PC. It consists of a resistor R2 and a capacitor C2. The reference voltage Vref is used as a driving voltage of the microcomputer 90 in the circuit in which the microcomputer 90 is provided, and a description of the voltage supply unit generating the reference voltage Vref is omitted. The generation of Vref) is a technique easily recognized by a person familiar with the technical field to which the present invention belongs.

In particular, since the potential difference between the node N1 and N2 is about 240V when the commercial power source is AC 240V, for example, the resistor R1 is a photocoupler when the voltage is directly applied to the photocoupler PC. This is to reduce the input voltage to several tens of volts since the PC may be damaged.

In addition, the photo coupler PC has a potential difference between the node N1 and N2, that is, when the first and second thermostats TS1 and TS2 are turned on so that power is supplied to the heater 30. Since the voltage corresponding to the potential difference is applied to the input terminal, and this voltage is an AC voltage, the internal photodiode emits light according to the period of this voltage, and the transistor which is a light receiving part is turned on / off, and a square wave is applied to the microcomputer 90. do. If there is no potential difference between the nodes N1 and N2, that is, when the first or second thermostat TS1, TS2 is turned off so that power is not supplied to the heater 30, the input terminal of the sensing circuit 80 is turned off. Since the inside of the photodiode does not emit light, the transistor which is the light receiving part is turned off, and thus the DC voltage waveform close to the reference voltage Vref is continuously applied to the microcomputer 90.

6 and 7 are graphs of output waveforms of a sensing circuit. As shown in FIG. 6, when the first and second thermostats TS1 and TS2 are in an on state, commercial power that is AC is applied to the heater 30, so that the nodes N1 and N2 A voltage difference of a magnitude corresponding to this commercial power source is caused, and the photo coupler PC is turned on according to the voltage difference, but since the AC voltage is applied, the photo coupler PC is repeatedly turned on and off in response to the cycle of the commercial power source. The square wave smaller than the reference voltage Vref is applied to the microcomputer 90.

As shown in FIG. 7, when the first or second thermostats TS1 and TS2 are in an off state, power is not supplied to the heater 30, and the nodes N1 and N2 are coincident with each other. The photo coupler PC is always turned off, so that a DC voltage (for example, a high signal) close to the reference voltage Vref is applied to the microcomputer 90.

Accordingly, the microcomputer 90 may calculate the power cutoff time to the heater 30 due to the OFF state of the first and second thermostats TS1 and TS2 according to the waveform of the DC voltage applied thereto.

8 is an on / off graph recognized by the microcomputer. FIG. 8 is on / off graphs recognized by the microcomputer of FIG. 5. In Figure 8, R means the diameter of the exhaust duct 50, the unit of the number is inches. That is, when the diameter is R (2.0), R (2.3), R (2.625), R (2.88), R (3.0), the microcomputer (according to the signal from the sensing circuit 80 as shown in Figs. 90 indicates on / off of the power supply state to the heater 30 recognized. The larger the diameter, the weaker the state of the air flow path (degree of blockage), and the narrower the diameter, the more severe the state of the air flow path (degree of blockage).

In order to determine the blocked state of the air flow path, a method of calculating and confirming an on / off duty ratio of a power supply is disclosed. In this embodiment, both the on duty ratio (x '/ y') and the off duty ratio (z '/ y') may be used, and only one of them may be used. The off duty ratio z '/ y' is described below.

First, the off duty ratio of R (2.0) is 0.48 (on duty ratio is 0.52), the off duty ratio of R (2.3) is 0.32 (on duty ratio is 0.68), and the off duty ratio of R (2.625) is 0.26. (The on duty ratio is 0.74), the off duty ratio of R (2.88) is 0.13 (the on duty ratio is 0.87), and the off duty ratio of R (3.0) is 0 (the on duty ratio is 1). That is, it can be seen that the off duty ratio increases as the diameter decreases. The on duty ratio is relatively reduced. Therefore, the microcomputer 90 may calculate the off duty ratio to determine the degree of blockage of the current air flow path (in particular, the blockage of the lint filter 41 or the blockage state of the exhaust duct 50). These experimental results can be summarized as shown in Table 1 below.

Off duty ratio Degree of blockage Blockage 0-0.30 - - 0.30-0.45 Low (weak) Lint filter 0.45-0.60 Medium Lint filter (severe blockage) / exhaust duct (medium blockage) 0.60 ~ Severe Exhaust duct

The microcomputer 90 stores the blockage information of the air flow path including a blockage degree of the on / off duty ratio and the like described above. This storage is made corresponding to the number of drying operations of the dryer. In particular, when the dryer 1 is first installed or reinstalled by moving, the microcomputer 90 stores the initial blockage of the air flow path, more precisely, the degree of initial blockage of the exhaust duct 50, and then the drying. The degree of blockage according to the performance of the operation is additionally stored. For example, the initial blockage degree D0 stored by the microcomputer 90 is stored, and the blockage degree thereafter is stored as D1, D2, ..., Dn-1, Dn.

9A and 9B illustrate display embodiments of the display device.

As shown in Fig. 9A, the display portion 9b consists of a single level portion L1. The display portion 9b may display such that the level portion L1 is turned on and the level portion L1 is turned on when the current blockage degree is greater than a single blockage threshold value (for example, the off duty ratio is 0.45).

As shown in FIG. 9B, the display portion 9b includes a plurality of level portions L1 ′ through L3 ′ arranged in succession. The display unit 9b may turn on and flash the level units L1 'to L3' simultaneously or sequentially, and the specific level units L1 'to L3' may blink.

9A and 9B, when the degree of blockage of the air flow path is normal, that is, when there is no degree of blockage to be displayed, the level portions L1 and L1 'to L3' of the display portion 9b are turned off. It is difficult for the user to confirm whether this display portion 9b is in normal operation to indicate the degree of blockage of the air flow path. That is, when the specific level portions L1 and L1 'to L3' of the display portion 9b have failed, the user may mistake that the displayed blockage degree is the actual blockage degree. Therefore, it is required to explicitly inform the user whether the display unit 9b is in normal operation.

10 is a flow chart of the display method of the dryer according to the present invention.

In detail, in step S11, the microcomputer 90 determines whether commercial power is applied and proceeds to step S12 when commercial power is applied.

In step S12, the microcomputer 90 causes the level units L1 and L1 ′ to L3 ′ of the display unit 9b to blink to allow the user to recognize that the display unit 9b is operating normally. . After the flashing of the level portions L1 and L1 'to L3', all of them are turned off.

In step S13, the microcomputer 90 determines whether there is a degree of blockage of the pre-stored air flow path (particularly, a degree of blockage of the lint filter 42 or a blocked state). If there is a degree of blockage of the pre-stored air flow path, the process proceeds to step S14, otherwise the process proceeds to step S15.

In step S14, the microcomputer 90 displays the degree of blockage of the pre-stored air flow path through the display unit 9b. At this time, the display portion 9b lights up and displays the level portions L1 and L1 'to L3' corresponding to the degree of clogging. Since the degree of blockage is displayed in conjunction with step S12, the blockage degree is displayed after the user is visually attracted by step S12, so that the user can recognize the degree of blockage more clearly.

In step S15, the microcomputer 90 proceeds to step S16 when the start of the drying operation from the user or the drying operation sequence according to a predetermined algorithm is reached through the input unit 9a.

In step S16, the microcomputer 90 determines the on / off of the temperature regulating member according to the signal from the sensing circuit 80 described above, calculates the on / off duty ratio accordingly, and the degree of blockage of the air flow path. Or determine the degree of blockage or blockage.

In step S17, the microcomputer 90 causes the blockage degree to be displayed through the display unit 9b when the blockage degree determined is greater than the blockage degree currently displayed. The blocked degree is displayed through the display portion 9b.

In step S18, the microcomputer 90 determines whether the drying operation is completed. If the drying operation is not completed, the process proceeds to step S16 to continuously determine the degree of blockage of the air flow path. If the drying operation is completed, the flow advances to step S19.

In step S19, the microcomputer 90 displays the degree of blockage or blockage of the final lint filter 42 through the display unit 9b. The display through the display unit 9b is made until the commercial power is cut off from the dryer 1, so that the user continuously recognizes the degree of clogging of the lint filter 42, thereby cleaning the lint filter 42 accordingly. To entice you to do your job.

Steps S13 and S14 described above are omitted since the user can clean the lint filter 42 before the power supply of the dryer 1, and determination of the degree of clogging by steps S16 and S17 and Only display may be performed.

11A and 11B illustrate embodiments of display degree of clogging of a display device.

As shown in FIGS. 11A and 11B, the microcomputer 90 displays the degree of blockage of the air flow path in step S14 or S17 so that the user can easily recognize the degree of blockage.

For example, when the blockage threshold value (off-duty ratio) is 0.45, when the blockage degree is equal to or higher than this blockage threshold value, the level portion L1 is lit or flashed as shown in Fig. 11A.

When the blocking threshold values (off-duty ratios) are 0.30, 0.45, and 0.60, respectively, and the blocking degree is 0.50, the level portions L1 'and L2' are lit or flashed as shown in Fig. 11B.

However, the scope of the present invention is not limited by the above embodiments and drawings.

In the following, various aspects of the claimable invention are described. The following description forms a part of the detailed description of the present invention, and can be understood from various viewpoints and examples of the control apparatus and control method of the dryer according to the present invention. It should be understood as a minimum description and not as a boundary limiting the present invention.

The display device of the dryer of the present invention according to claim 1 of the present invention has a filter state display unit displaying a degree of clogging or a clogging state of a filter, a power supply unit to which commercial power is applied, and after commercial power is applied through the power unit, The filter status display part blinks for a predetermined time and the filter status display part turns on to display the degree of blockage or blockage of the filter. To provide.

The control unit according to claim 2 of the application may be displayed through the filter state display unit when the degree of blockage or the blockage state of the filter is greater than or equal to the threshold value, so that stepwise information may be provided to the user, such as when cleaning is requested. .

The control unit according to claim 3 of the filing claims displays the degree of blockage or blockage of the filter until the commercial power from the power supply is cut off, so that the user can check the degree of blockage or blockage.

The display device according to claim 4 of the present invention has a detector for detecting a degree of blockage or a blockage state of the filter.

The control unit according to claim 5 of the application claim determines the degree of blockage or blockage of the filter during the drying operation according to the detection of the detection unit.

The filter state display method of the dryer according to claim 6 in the filing of claims has a first display step of blinking the filter state display unit for a predetermined time when the power is applied, and the filter state display unit is turned on to indicate the clogging state or the degree of clogging of the filter. Including the second display step of displaying, the user may check whether the filter state display unit is normally operated and whether the filter is in a clogged state or a degree of clogging.

The second marking step according to claim 7 of the claim is performed when the blockage state or the blockage degree of the filter is greater than or equal to the threshold.

In the filing, the second display step according to claim 8 is performed until the power is cut off.

The second marking step according to claim 9 at the time of filing is performed during the drying operation.

The display method according to claim 10 at the time of filing includes determining a degree of blockage or a blockage state of the filter.

The present invention has the effect of indicating the degree of clogging of the air flow path in which the drying operation in the dryer.

In addition, the present invention indicates that the display unit is in normal operation when power is applied, thereby improving the reliability of the degree of clogging.

In addition, the present invention visually attracts the user, there is an effect of increasing the recognition effect on the degree of blockage of the air flow path.

Claims (10)

A filter state display unit for displaying a blockage degree or a blockage state of the filter; A power supply unit receiving commercial power; And a control unit configured to blink the filter state display unit for a predetermined time after the commercial power is applied through the power supply unit, and to turn on the filter state display unit to display the degree of blockage or blockage of the filter. The method of claim 1, The control unit is a display device of the dryer, characterized in that to display through the filter state display unit when the degree of clogging or the blocked state of the filter is greater than the threshold. The method of claim 1, The control unit is a display device of the dryer, characterized in that the degree of clogging or clogging of the filter until the commercial power from the power supply is cut off. The method according to any one of claims 1 to 3, Display device of the dryer characterized in that it comprises a detector for detecting the degree of clogging or clogging of the filter. The method of claim 4, wherein The control unit according to the detection of the detection unit, characterized in that for determining the degree of clogging or clogging of the filter during the drying operation. A first display step of blinking the filter state display unit for a predetermined time when power is applied; And a second display step of displaying a blocked state or a blocked degree of the filter by lighting the filter state display unit. The method of claim 6, The second display step is a filter state display method of the dryer, characterized in that is performed when the blocked state or the degree of clogging of the filter is greater than the threshold. The method of claim 6, The display method of the filter state of the dryer, characterized in that the second display step is performed until the power is cut off. The method of claim 6, And the second display step is performed during the drying operation. The method according to any one of claims 6 to 9, The display method is a filter state display method of the dryer, characterized in that it comprises the step of determining the degree of clogging or clogging of the filter.

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