KR100624719B1 - Drum/tub anti-mushroom control method of washing machine - Google Patents

Abstract

In the barrel sterilization control method of the combined use washing machine according to the present invention, when the barrel sterilization course is input, the barrel is sterilized by heating water with a washing heater, and afterwards, barrel sterilization / drying is performed by heating air with a drying heater. In this case, the tub and drum can be sterilized efficiently without a separate tub cleaner, and the tub and drum can be dried to prevent re-contamination due to moisture remaining in the tub and drum.

Drying Washing Machine, Tub, Drum, Washing Heater, Drying 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 washing machine according to the present invention,

5 is a view showing a temperature change of water and air according to the method for controlling the barrel sterilization of the 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: condensation duct-side temperature sensor 50: washing heater

52: Tub side temperature sensor 60: Control panel

66: course input dial 70: control unit

The present invention relates to a drying and washing machine barrel sterilization control method, and in particular, to sterilize the barrel using a washing heater without using a separate barrel cleaner, and to sterilize / dry the barrel using a drying heater and a blower fan. It relates to a barrel sterilization control method of a combined use washing machine.

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 on 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 is configured to include a condenser 40 for condensing the air blown toward the ().

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.

On the other hand, the combined dry washing machine is configured to include a washing heater 50 for heating the water in which the detergent supplied to the tub 10 dissolved or clean water.

The washing heater 50 heats and washes the water in which the detergent supplied to the tub 10 is dissolved in the washing stroke, and is installed at an inner lower portion of the tub 10.

The tub 10 or the washing heater 30 is provided with a temperature sensor 52 (hereinafter, referred to as a “tub side temperature sensor”) to measure the temperature of the water supplied to the tub 10.

When the tub-side temperature sensor 52 is installed in the tub 10, only the temperature of water is measured, and when the tub-side temperature sensor 52 is installed in the laundry heater 50, the heater heater for overheating the laundry heater 50 ( In addition to measuring the temperature of the washing heater 50 so as to cut off the current applied to the 50) it is possible to measure the temperature of the water.

In addition, the combined-use washing machine further includes a water level detection mechanism 53 for detecting the level of water in which detergent supplied to the tub 10 is dissolved or clean water.

The water level detection mechanism 53 is connected to the water level detection bellows pipe 51 connected to one side of the drainage bellows pipe 27 and the water level detection bellows pipe 51 so that a lower end passes through the water level detection bellows ( The air chamber 52 is filled with air acting pressure depending on the level of the water filled in the 51, the water level detection tube 53 connected to the lower end on one side of the air chamber 52, and the water level detection tube 53 ) Is connected to the upper end is configured to include a water level sensor 54 for detecting the water level by detecting the air pressure in the water level detection tube (53).

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 side 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.

The washing machine is provided with a dehydration stroke for centrifugal dehydration of the water of the fabric after the rinsing strokes as described above.

The washing machine centrifugally dewaters the cloth by driving the motor 12 at high speed, and drains the water dewatered from the cloth to the outside of the combined 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, in the conventional combined dry washing machine, a separate tub cleaner must be added to clean and sterilize the tub 10 and the drum 20, so that the user has to purchase, store, and dispense the tub cleaner. .

In addition, the tub 10 and the drum 20 may be recontaminated by water remaining in the tub 10 and the drum 20 after cleaning the tub.

The present invention has been made to solve the above problems of the prior art, it is possible to sterilize the tub and drum without adding a separate tub cleaner, it is possible to prevent re-contamination by the water remaining in the tub and drum It is an object of the present invention to provide a method for controlling barrel sterilization of a combined-use washing machine.

In the barrel sterilization control method of the combined dry washing machine according to the present invention for solving the above problems, when the barrel sterilization course is input, water is supplied to the drum and the water is heated by a washing heater to sterilize the barrel and the water in the drum A sterilization step of draining the barrel; After the barrel sterilization step, the drying heater is turned on, and a tub sterilization / drying step of performing a barrel drying with hot air by rotating a blowing fan is characterized in that it is configured.

The barrel sterilization step may include a water supply process of supplying water to a height at which a lower end of the drum may be immersed in the water supplied thereto, and a temperature increase process of controlling the heater so that the water supplied after the water supply process reaches a set temperature; An isothermal process for controlling the heater so that the water temperature maintains the set temperature when the water in the tub reaches the set temperature, and a draining process for draining the water in the tub after the isothermal process is performed for the set time. .

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

The barrel sterilization control method of the combined dry washing machine is characterized in that it further comprises a dehydration process for dehydrating the drum after the draining process.

The barrel sterilization / drying step may include a temperature raising process of turning on a drying heater and rotating a blowing fan; After the temperature increase process, if the temperature in the tub reaches the sterilization set temperature, characterized in that it comprises an isothermal process for controlling the drying heater and the blowing fan to maintain the temperature in the tub at the sterilization set temperature for a set time.

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

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

When the combined-use washing machine includes a course input unit for inputting various courses, the through-sterilization control method of the combined-use washing machine may be performed at the time of inputting the sterilized course 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 according to the present invention includes a tub sterilization course input of the control panel 42, a temperature of air detected by the condensation duct-side temperature sensors 46 and 47, and a tub-side temperature sensor ( 52, the motor 12, the water supply valve 14, the drain pump 18, the drying heater 26, and the fan motor 31 according to the temperature of the water detected by the water level sensor 57. ), A control unit 70 for controlling the washing heater 50 and the like is further configured.

The condensation duct side temperature sensors 46 and 47 measure the temperature of the air condensed by the condensation duct side first temperature sensor 46 and the condensation duct side temperature sensor 46 installed to measure the temperature of the air flowing into the condensation duct 31. As one of the condensation duct-side 2nd temperature sensors 47 provided so that it may measure, it demonstrates only to the condensation duct-side 1st temperature sensor 46 below.

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

First, the user closes the door 22 in a state where no cloth is put into the drum 20 (no load) and inputs a barrel sterilization course through the coarse input dial 66 of the control panel 60. When the operation command is input, the washing machine performs a barrel sterilization course. (S1)

The controller 70 turns on the water supply valve 14 (S2).

When the water supply valve 14 is turned on, the water w supplied through the external hose 14a is supplied to the water supply valve 14, the water supply hose 15a, the detergent supply device 15, and the water supply bellows pipe. It passes through 15b in order and is supplied to the inner lower part of the tub 10.

The controller 70 stops the water supply by turning off the water supply valve 14 when the water level of the water detected by the water level sensor 57 reaches a level where the lower portion of the drum 20 is locked.

Then, the control unit 70 turns on the washing heater 50 to heat the water supplied (S3).

The water w in the tub 10 is heated by the washing heater 30 and gradually warmed up, as shown in FIG. 5.

The controller 70 drives the motor 12 to rotate the drum 20 with heating of the supplied water.

In this case, the controller 70 preferably drives the motor 12 so that the drum 20 is rotated at a lower speed (eg, 100 rpm) than during the dehydration stroke.

The controller 70 continues to turn on the washing heater 50 until the temperature of the water detected by the tub side temperature sensor 52 reaches a sterilization set temperature, and is sensed by the tub side temperature sensor 52. When the temperature of the purified water reaches a sterilization set temperature (for example, 60 ° C. or more and less than 80 ° C.), the washing heater 50 is controlled to maintain the sterilization set temperature. (S5, S6)

That is, the controller 70 turns off the washing heater 50 when the water temperature exceeds the sterilization set temperature, and turns on the washing heater 50 when the water temperature is below the sterilization set temperature.

At this time, the inner lower portion of the drum 20 and the tub 10 are sterilized by microorganisms by water heated to a sterilization set temperature.

On the other hand, the control unit 70 turns off the washing heater 50 when the sterilization setting temperature maintenance of the washing heater 50 is performed for a set time (for example, 10 minutes). (S7, S8 )

Then, the controller 70 drives off the motor 12 to stop the drum 20. (S9)

Thereafter, the control unit 70 turns on the drain pump 18 to drain the water w in the tub 10, and the water w in the tub 10 is all external to the cabinet 2. If drained, the drain pump 18 is turned off. (S10)

Thereafter, the controller 70 drives the motor 12 at a high speed to centrifugally dewater the drum 20 at a high speed (for example, 700 rpm).

During the high speed rotation of the drum 20, the water remaining in the drum 30 is centrifugally dehydrated and collected in the tub 10, and the controller 70 dehydrates the drum 32 at a predetermined time (for example, 5). Minutes), the motor 12 is driven off and the drain pump 18 is turned on.

When the drain pump 18 is turned on, the water in the tub 10 is drained out of the cabinet 2.

Thereafter, 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 (S12).

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 control unit 70 continues to turn on the drying heater 28 until the temperature of the air detected by the condensation duct-side temperature sensor 46 reaches a sterilization set temperature, and the condensation duct-side temperature sensor 46 When the detected temperature of the air reaches a sterilization set temperature (eg, 60 ° C. or more and less than 100 ° C.), the drying heater 30 is controlled to maintain the sterilization set temperature. (S14, S15 )

Here, the sterilization set temperature may be set to be the same as the sterilization set temperature when the washing heater 50 is turned on, or may be set higher or lower.

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. The drum 20 and the tub 10 are dried while sterilizing microorganisms and the like with hot air.

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. (S16, S17)

Here, the set time may be set equal to the set time when the washing heater 50 is turned on / off, or may be set longer or shorter.

In addition, the controller 70 drives off the motor 12 to stop the drum 20. (S18)

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) The drum 20 may be provided after the temperature of water or air reaches a sterilization set temperature without rotating the drum 20 with the on of the washing heater 50 and the drying heater 26. Of course, it is also possible to rotate.

In the barrel sterilization control method of the combined drying machine according to the present invention configured as described above, when the barrel sterilization course is input, the barrel sterilization by heating the water with a washing heater, afterwards the barrel sterilization by heating the air with a drying heater Since drying is carried out, the tub and drum can be sterilized efficiently without a separate tub cleaner, and the tub and drum can be dried to prevent re-contamination by water remaining in the tub and drum.

Claims (8)

A barrel sterilization step, when the barrel sterilization course is input, water is supplied to the drum and then heated with a washing heater to sterilize the barrel and drain the water in the drum; After the barrel sterilization step, the drying heater on and the barrel sterilization control method for a dry combined washing machine comprising a barrel sterilization / drying step of rotating the blowing fan to perform the barrel drying with hot air. The method of claim 1, The barrel sterilization step is a water supply process for supplying water to a height that can be submerged in the water supplied to the bottom of the drum, A temperature raising process of controlling the heater such that water supplied after the water supplying process reaches a set temperature; An isothermal process of controlling the heater so that the water temperature maintains the set temperature when the water in the tub reaches the set temperature; After the isothermal process is carried out for a set time, the method for controlling the sterilization of the barrel of a dry washing machine comprising a drainage process for draining the water in the tub. The method of claim 2, At least one of the temperature increase process and the isothermal process is a barrel sterilization control method of a dry combined washing machine, characterized in that for rotating the drum. The method of claim 2, The barrel sterilization control method of the combined dry washing machine further comprises a dewatering process of dehydrating the drum after the draining process. The method of claim 1, The barrel sterilization / drying step may include a temperature raising process of turning on a drying heater and rotating a blowing fan; And an isothermal process for controlling the drying heater and the blower fan to maintain the temperature in the tub at the sterilization setting temperature for a predetermined time when the temperature in the tub reaches the sterilization setting temperature after the temperature increase process. Control method of barrel sterilization. The method of claim 5, wherein At least one of the temperature increase process and the isothermal process is a barrel sterilization control method of a dry combined washing machine, characterized in that for rotating the drum. The method of claim 5, wherein The barrel sterilization control method of the combined dry washing machine If the isothermal process is carried out for a set time, the barrel 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 according to any one of claims 1 to 7, 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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