KR20060085960A - Drum/tub anti-mushroom control method of washing machine - Google Patents

Abstract

The barrel sterilization control method of the combined-use washing machine according to the present invention performs the sterilization of the barrel by hot air by a drying heater and a blower fan, thereby keeping the tub and drum clean without the user having to purchase, store and add a separate barrel cleaner. It can be, and the water supply and drainage of the water is unnecessary for the sterilization of the barrel has the advantage of minimizing the water usage.

Drying Washer, Tub, Drum, Dry Heater, Blower Fan

Description

{Drum / tub anti-mushroom control method of washing machine}             

1 is a cross-sectional view showing the internal configuration of a dry-use washing machine according to the prior art,

Figure 2 is a front view showing a control panel of the combined drying washing machine applied to the barrel sterilization control method according to the present invention,

3 is a control block diagram of an example of a combined dry washing machine applied to the barrel sterilization control method according to the present invention,

4 is a flow chart of the barrel sterilization control method of the combined dry washing machine according to the present invention,

5 is a view showing a temperature change of air according to the method for controlling the barrel sterilization of the combined dry washing machine according to the present invention.

<Explanation of symbols on main parts of the drawings>

2: cabinet 10: tub

12: motor 20: drum

26: drying heater 28: blowing fan

30: drying duct 31: fan motor

46,47: temperature sensor 60: control panel

66: course input dial 70: control unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling the drying and washing machine tub sterilization, and more particularly, to a method for controlling the sterilization and drying of a combined washing machine which uses a drying heater and a blower fan without using a separate tub cleaner.

In general, a washing machine is a device that removes contaminants on clothing, etc. (hereinafter referred to as `` po '') by using a detergent and water, and is a washing machine having only a washing function and a dry washing machine having a washing function and a drying function. Recently, drums and tubs are periodically cleaned and sterilized using a tub cleaner.

1 is a cross-sectional view showing the internal configuration of a dry-use washing machine according to the prior art.

As shown in FIG. 1, the conventional dry washing machine includes a cabinet 2 having a front entry hole 1 formed on a front surface thereof, and a spring 4 and a damper 6 formed inside the cabinet 2. A tub 10, a drum 20 installed inside the tub 10 to accommodate a fabric, a door 22 connected to the cabinet 2 to open and close the fabric access hole 1, and the tub A drying duct 30 installed above the tub 10 to discharge hot air to the 10 and having a drying heater 26 and a blowing fan 28 therein, and a drying duct 30 from the tub 10. It comprises a condenser 40 for condensing the air blown toward.

The tub 10 has an opening hole 10a formed at the rear of the gun entrance hole 1.

The tub 10 is attached to the gasket 11 to be in close contact with the door 22 when the door 22 is closed to prevent leakage of air, water, and cloth, and to connect the drying duct 30.

The tub 10 is provided with a motor 12 to support / rotate the drum 20.

The tub 10 is connected to a water supply device 13 for supplying clean water or detergent-containing water to the inside of the tub 10 during washing or rinsing.

The water supply device 13 is connected to an external hose 14a to supply a water supply valve 14 to regulate the water supplied through the external hose 14a, and a water supply device for supplying detergent through the water supply valve 14 ( A plurality of water supply hoses 15a leading to the water supply pipe 15a and water supply bellows pipes 15b which guide the inside of the tub 10 to clean water or detergent-containing water passing through the detergent supply device 15. tube).

The drainage device 16 is connected to the lower portion of the tub 10.

The drainage device 16 includes a drainage bellows 17 connected to the bottom of the tub 10, a drainage pump 18 connected to the drainage bellows, and a drainage hose 19 connected to the drainage pump 18. It is configured to include.

The drum 20 has an opening hole 20a formed at the rear of the cloth access hole 1.

The drum 20 has a through hole 22 through which washing water or air passes through a circumferential or rear surface thereof.

The drum 20 is equipped with a lifter 24 for flowing the cloth on the inner circumferential surface.

A fan motor 31 is installed in the drying duct 30 to rotate the circulation fan 28.

The condenser 40 is configured to include a condensation duct 41 for condensing moisture of air circulated by one side is connected to the lower side of the tub 10, the other side is connected to the drying duct 30.

The condensation duct 41 is connected to a cooling water supply 42 for supplying cooling water for condensation into the condensation duct 41 so that moisture in the air circulated while drying the fabric.

The cooling water supplier 42 is connected to the external hose 43 to cool the valve for condensation cooling water supplied through the external hose 43 and the condensing duct to the cooling water for condensation passing through the cooling water valve (41) It comprises a coolant hose (45) for guiding the inside.

Reference numeral 32 denotes a temperature sensor for preventing damage to the fabric, which measures the temperature of the air heated by the drying heater 26 to prevent damage to the fabric, which may occur when the air circulated to the drum 20 is overheated. Dry duct temperature sensor).

Reference numeral 46 is a condensation duct-side first temperature sensor that measures the temperature of the air flowing into the condensation duct 31 so that various control of the drying stroke can be performed.

Reference numeral 47 is a condensation duct-side second temperature sensor that measures the temperature of the air condensed by the cooling water for condensation so as to perform various control of the drying stroke.

Looking at the operation of the combined dry washing machine according to the prior art configured as described above are as follows.

First, when the bag 22 is inserted into the drum 20 and the door 22 is closed and the washing machine is operated, the washing machine supplies water containing detergent through the water supply device 13.

The water containing the detergent supplied is supplied into the tub 10 to be contained in the tub 10, introduced into the drum 20 through the through hole 22 of the drum 20, and wetted with a cloth. Lose.

After the water supply of the detergent-containing water is performed, when the motor 12 is driven, the drum 20 is rotated, and the cloth in the drum 20 flows inside the drum 20 while the detergent is discharged. The stains are dropped by the action of the water contained.

The combined-use washing machine drains the contaminated water in the tub 10 to the outside of the combined-use washing machine through the drainage device 16 after the washing stroke is completed.

Thereafter, the drying combined washing machine performs a rinsing cycle several times to rinse the foam remaining on the fabric, and controls the water supply device 13 and the motor 12 to rinse the foam remaining on the fabric, such as a washing stroke, and includes foam. The contaminated water is drained out of the dry washing machine through the drainage device 16.

After the several rinsing strokes as mentioned above, the said dry combined washing machine performs the dehydration stroke of centrifugal dehydration of the moisture of a cloth.

The combined-use washing machine drives the motor 12 at high speed to centrifugally dewater the cloth, and drains the water dewatered from the cloth to the outside of the combined-use washing machine through the drainage device 16.

Thereafter, the combined-use washing machine performs a drying stroke for drying the cloth.

First, the combined-use washing machine drives the motor 12 to rotate the drum 20, and the cloth in the drum 20 flows in the drum 20.

In addition, the drying heater 26 is turned on to increase the ambient air, the fan motor 31 is driven to rotate the circulation fan 28, the coolant valve 44 and the drain pump 18 is Repeat On / Off at set time interval.

By the rotation of the circulation fan 28, the air inside the drum 20 is brought into contact with the fabric and takes the heat and moisture of the fabric and changes to low temperature and humidity. The drum 20 and the tub 10 pass through the through hole 22. After passing through the condensation duct 41 is introduced into the condensation duct 41, it is condensed by the cooling water for condensation while passing through the condensation duct 41.

Air passing through the condensation duct 41 is heated by the drying heater 26 while passing through the drying duct 30 is converted into hot air, the hot air passes through the gasket 11 to the It is discharged inward, circulated into the drum 20, and then drying the cloth while repeating the above cycle.

Meanwhile, the condensation cooling water supplied to the condensation duct 41 passes through the condensation duct 41, collects into the tub 10, and is periodically pumped by the drain pump 18 and drained to the outside.

When the drying combined washing machine performs the setting time as described above, the motor 12, the drying heater 26, the fan motor 31, and the cooling water valve 44 are turned off, and the drying stroke is finished.

On the other hand, the combined dry washing machine as described above takes out the cloth from the drum 20 after washing, rinsing, dehydration and drying, and after inputting the tub cleaning agent into the drum 20, the washing stroke and the rinsing stroke are inputted. The tub 10 and the drum 20 are cleaned by the tub cleaner.

That is, in the combined-use washing machine, water is supplied to the predetermined level of the tub 10 so that the tub cleaner is mixed with water. When the water supply is completed, the drum 20 is rotated, and the water mixed with the tub cleaner is deposited. , Bacteria, etc. are separated from the tub 10 and the drum 20.

Thereafter, the washing machine performs drainage to discharge deposits, bacteria, and the like with water.

However, the conventional combined dry washing machine has to put a separate tub cleaner to clean and sterilize the tub 10 and the drum 20, so that the user has to purchase, store and inject the tub cleaner. , Water must be supplied, drained for the sterilization of the barrel, there is a problem that the amount of water used is increased.

The present invention has been made to solve the above-mentioned problems of the prior art, the user can keep the tub and drum clean without the user need to purchase, store, and dispense the tub cleaner, combined drying to minimize water usage It is an object of the present invention to provide a method for controlling barrel sterilization of a washing machine.

The barrel sterilization control method of the combined dry washing machine according to the present invention for solving the above problems is characterized in that when the barrel sterilization course is input, turn on the drying heater and rotate the blowing fan to sterilize the barrel with hot air. .

The barrel sterilization control method of the combined use washing machine according to the present invention includes a heating step of turning on a drying heater and rotating a blower fan when a barrel sterilization command is input; And an isothermal step of controlling the drying heater and the blower fan to maintain the temperature in the tub at the sterilization set temperature when the temperature in the tub reaches the sterilization set temperature after the temperature increase step.

At least one of the temperature raising step and the isothermal step is characterized by rotating the drum.

The barrel sterilization control method of the combined use washing machine is characterized in that when the isothermal step is performed for a predetermined time, the drying heater is turned off and the blowing fan is stopped.

When the washing machine includes a course input unit for inputting a variety of courses, the barrel sterilization control method of the washing machine is characterized in that is carried out when the barrel sterilization course input provided in the course input unit.

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

Since the constitution of the combined drying washing machine to which the barrel sterilization control method according to the present invention is applied is the same as in the prior art, the same reference numerals are used and detailed description thereof will be omitted.

Figure 2 is a front view showing a control panel of a dry washing machine applied to the barrel sterilization control method according to the present invention, the control panel 60, the power button 63 for inputting power, washing, rinsing, dehydration, water temperature , Various operation buttons 64 for selecting and inputting drying, operation / stop button 65 for inputting operation / stop of the washing machine, and course input for inputting various courses such as a boiled course and a barrel sterilization course A dial 66 and a display 67 for displaying various driving information of the washing machine are provided.

3 is a control block diagram of an example of a combined dry washing machine to which the barrel sterilization control method according to the present invention is applied.

As shown in FIG. 3, the washing machine to which the barrel sterilization control method according to the present invention is applied includes a motor according to the barrel sterilization course input of the control panel 60 and the temperature of the air detected by the temperature sensors 46 and 47. 12), the drying heater 26, and the control unit 60 for controlling the fan motor 31 is further configured.

The temperature sensors 46 and 47 are installed to measure the temperature of the air condensed by the condensation duct-side first temperature sensor 46 installed to measure the temperature of the air flowing into the condensation duct 31 and the cooling water for condensation. As at least one of the condensation duct-side second temperature sensors 47, the condensation duct-side first temperature sensor 46 will be described below.

Figure 4 is a flow chart of the barrel sterilization control method of a combined-use washing machine according to the present invention, Figure 5 is a view showing a temperature change according to the barrel sterilization control method of a combined-use washing machine according to the present invention.

First, the user closes the door 22 in a state in which the fabric is not inserted into the drum 20 (no load), and inputs a barrel sterilization course through the course input dial 66 of the control panel 60. When the operation command is input, the combined-use washing machine performs a barrel sterilization course. (S1)

The control unit 70 turns on the drying heater 26 so that the drying heater 26 heats the surrounding air, and drives the fan motor 31 so that the blowing fan 28 is rotated (S2).

The controller 70 drives the motor 12 so that the drum 20 is rotated together with the on-off of the drying heater 26 and the fan motor 31.

At this time, the control unit 70 preferably drives the motor 36 so that the drum 32 is rotated at a lower speed (for example, 100 rpm) than during the dehydration stroke.

Air in the drum 20 is flowed by the rotation of the blowing fan 28 is moved between the drum 20 and the tub 10 through the through hole 22 of the drum 20, the condensation duct ( After passing through 41, it is blown to the drying duct (30).

The air blown into the drying duct 30 is heated by the drying heater 26 to be changed into hot air, and then is blown into the drum 20, and then gradually heated up as the above circulation / heating is repeated. .

The controller 70 continuously turns on the drying heater 28 until the temperature of the air detected by the temperature sensor 46 reaches a sterilization set temperature, and the temperature of the air detected by the temperature sensor 31. When the temperature reaches the sterilization set temperature (for example, 60 ° C. or more and less than 100 ° C.), the drying heater 30 is controlled to maintain the sterilization set temperature. (S4, S5)

That is, the controller 70 turns off the drying heater 26 when the temperature of the air exceeds the sterilization set temperature, and turns on the drying heater 26 when the temperature of the air is below the sterilization set temperature.

While maintaining the sterilization set temperature while the drying heater 26 is controlled as described above, air circulating heated remains in the drum 20 and the tub 10 while being in contact with the drum 20 and the tub 10. Sterilize microorganisms, etc.

On the other hand, the control unit 70 turns off the drying heater 26 when the sterilization set temperature maintenance of the drying heater 26 is performed for a set time (for example, 10 minutes), and the blowing fan 28 The fan motor 31 is driven to stop so as to stop. (S6, S7)

Then, the control unit 70 drives off the motor 12 to stop the drum 20. (S8)

On the other hand, the present invention is not limited to the above embodiment, it is also applicable to the exhaust type combined-use washing machine, there is no tub sterilization course is provided on the course input dial 66, a separate tub sterilization button (not shown) It is also possible to provide, and of course, it is also possible to rotate the drum 20 after the temperature of the air reaches the sterilization set temperature without rotating the drum 20 with the on of the drying heater (26). .

The barrel sterilization control method of the combined dry washing machine according to the present invention configured as described above performs the sterilization of the barrel by hot air by a drying heater and a blowing fan, so that the tub and the user do not need to purchase, store, and put in a separate barrel cleaner. The drum can be kept clean, and water supply and drainage of water are unnecessary for the sterilization of the barrel, thereby minimizing the amount of water used.

Claims (5)

When the barrel sterilization course is input, the barrel sterilization control method of a dry washing machine, characterized in that the drying heater is turned on and the blowing fan is rotated to sterilize the barrel with hot air. A temperature increase step of turning on the drying heater and rotating the blower fan when the barrel sterilization command is input; After the temperature raising step, if the temperature in the tub reaches the sterilization set temperature, the sterilization of the barrel of the dry washing machine comprising an isothermal step of controlling the drying heater and the blowing fan to maintain the temperature in the tub at the sterilization set temperature Control method. The method of claim 2, At least one step of the temperature raising step and the isothermal step is a barrel sterilization control method of a dry combined washing machine, characterized in that for rotating the drum. The method of claim 2, wherein The barrel sterilization control method of the combined dry washing machine When the isothermal step is carried out for a set time, the drying sterilization control method of a dry washing machine, characterized in that the drying heater is turned off and the blowing fan is stopped. The method of claim 1, wherein When the combined dry washing machine includes a course input unit for inputting various courses, The barrel sterilization control method of the combined-use washing machine is a barrel sterilization control method of a combined-use washing machine, characterized in that is carried out at the time of entering the barrel sterilization course provided in the course input unit.

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