KR20060017667A - Method for generating steam in drum-type washing machine - Google Patents

Abstract

The present invention relates to a method for washing steam in a drum washing machine, wherein the laundry in the drum can be sufficiently filled before washing by a first packing core by washing water and a second packing core by steam. It is possible to supply water to the water, and to suppress the unnecessary waste of washing water as much as possible to protect the heater, and to heat the laundry before washing for efficient washing of the laundry with a small amount of electricity.

Drum, Washing Machine, Steam, Generation

Description

Method for generating steam in Drum-type washing machine}

1 is a view showing a typical drum washing machine,

2 is a view showing a drum washing machine to which the present invention is applied;

3 is a signal flow diagram illustrating a steam washing method of the drum washing machine according to the present invention;

4 is a signal flow diagram illustrating an example of the first loading process of FIG. 3;

FIG. 5 is a signal flow diagram illustrating the second stacking process of FIG. 3 as an example.

Explanation of symbols on the main parts of the drawings

200: drum 210: inlet pipe

220: detergent box 230: steam generator

240: branch for preventing backflow 250: spray nozzle

260: outflow pipe 270: circulation pump

280: Exterior Case

The present invention relates to a steam washing method of a drum washing machine.

More specifically, it is possible to generate steam by refilling the washing water in a small container according to the detection signal of the water level sensor, so that the size of the container can be made compact compared to the required amount of steam generation. It is easy to install, and when steaming the laundry, steam is generated, and the generated steam is supplied to the laundry inside the drum to be heated, thereby maximizing the blanketing effect even with a small amount of washing water. It relates to a steam washing method of the drum washing machine.

In general, a washing machine is a machine for washing laundry by performing washing, rinsing, and dehydrating strokes. The washing machine is classified into a pulsator type, a stirring type, a drum type, and the like according to a washing method.

Recently, a washing machine has become an important purchase factor for not only washing performance but also convenience of use, and thus, product development for increasing convenience of use has been accelerated.

1 is a schematic cross-sectional view of such a general drum washing machine. 1, the drum washing machine 1 includes a drum 4 having a plurality of lifts 5 on its inner surface for washing laundry; A rotating shaft (3) coupled to the drum (4) for rotating the drum (4); A drum motor 6 generating a rotational force and transmitting the generated rotational force to the rotation shaft 3 through a pulley; A tub 2 is coupled to the outside of the drum 4.

In the operation method of the drum washing machine configured as described above, the laundry is first put into the drum 4 of the drum washing machine 1, and then, when the start button is pressed, water is supplied and power is supplied to the drum motor 6 at the same time.

Then, as power is applied to the drum motor 6, the drum motor 6 rotates, and the rotational force of the drum motor 6 is transmitted to the rotation shaft 3 by an electric system by a pulley and a belt. The rotating shaft 3 is rotated.

In addition, since the rotation of the rotating shaft 3 rotates the drum 4 forward and reverse, the laundry inside the drum 4 can be washed.

That is, as the drum 4 rotates, the laundry is lifted upward by the plurality of lifts 5 provided on the inner surface of the drum 4, and the laundry lifted upward is dropped by gravity and falls to the bottom by dropping. Washing is done by impact and flexion.

Such a drum washing method is a method of washing by using a friction force of the drum 4 and the laundry rotated by the driving force of the motor 6 in a state where detergent, washing water and laundry are put into the drum 4, Almost no damage to the laundry, the laundry is not tangled with each other, it can produce a laundry effect of pounding and scrubbing, but there is an inconvenience in the input and withdrawal of the laundry has been developed to improve the technology.

However, in the conventional drum washing machine, there is a basic space for placing the electric heater for washing water heating under the tub (2). In the basic space, there is a side in which residual detergent easily collects during washing, and water is always wasted as much as the space.

In addition, there is a disadvantage that the speed of washing the laundry is slow due to the foaming due to tumbling during water supply.

The present invention can supply only a small amount of washing water, and can suppress the generation of unnecessary waste water for the protection of the heater to the maximum, and a drum capable of heating the laundry before washing for efficient washing of the laundry. It is an object of the present invention to provide a steam washing method of a washing machine.

To this end, according to the present invention, in response to an input of a washing instruction by a user's key operation, supplying the washing water into the drum for a first setting time, first washing the laundry inside the drum;

When the first set time has elapsed, the first sieve is stopped, and a steam is generated by using a steam generator that communicates with the drum for a second set time, and the generated steam is sprayed into the drum to wash laundry. Weeding;

When the second set time elapses, the second sieve is stopped, and the drum is rotated to wash the laundry therein.

Hereinafter, a steam washing method of the drum washing machine of the present invention will be described in detail with reference to the accompanying drawings of FIGS. 2 to 5.

2 is a schematic perspective view of a drum washing machine equipped with a steam generator according to the present invention. Referring to Figure 2, the drum washing machine of the present invention, the drum 200 is laundered laundry; An inlet pipe 210 for supplying water in the drum 200; A detergent box 220 for supplying detergent to the drum 200; A steam generator (230) for supplying steam into the drum (200); An injection nozzle (250) for injecting steam generated by the steam generator (230) into the drum (200) through a backflow preventing branch (240); An outlet pipe 260 for draining the washing water in the drum 200; A circulation pump 270 for pumping the wash water drained from the outflow pipe 260 and circulating the reverse flow prevention branch apparatus 240 through the circulation water flow path; The drum 200, the inlet pipe 210, the detergent box 220, the steam generator 230, the injection nozzle 250, the outflow pipe 260 and the outer case 280 surrounding the circulation pump 270 It is composed.

The drum washing machine configured as described above, when the user presses a predetermined steam washing operation button, the water supply valve of the washing machine is opened to supply water to a predetermined level required for washing together with the detergent in the detergent box 220. Thereafter, when the water supply is completed, the water supply valve is closed, the circulation pump 270 is operated, the water circulation is made for a predetermined time to dissolve the detergent and the circulation ends.

Thereafter, when the steam generation water is supplied to the inside of the steam generator 230 according to the present invention to a predetermined level, the steam generation water is heated by a heater (not shown) to generate steam, and the generated steam Store in the steam storage space of the steam generator (230). When steam above a predetermined pressure is stored in the steam storage space, the steam is injected into the drum 200 of the washing machine through the injection nozzle 250. Hereinafter, the steam generator according to the present invention will be described with reference to FIG. Let's explain in more detail

3 is a signal flow diagram illustrating a steam washing method of the drum washing machine according to the present invention. As shown in FIG. 3, in the steam washing method of the drum washing machine according to the present invention, according to an input of a washing instruction by a user's key operation (S300), the first washing core by washing water is performed (S400). .

That is, when the washing water is supplied to a predetermined region between the drum and the tub, and reaches the predetermined upper limit number, the supplied washing water is circulated to the laundry in the drum to coat the laundry, thereby to When the water level is lowered and the preset lower limit level is reached, the washing water is re-supplied to the predetermined area, and the washing water is circulated back into the drum for a first set time so as to wash the laundry inside the drum. Indulge yourself.

Next, when the first set time elapses after the first set time elapses (S400), a second fill core by steam is performed (S500).

That is, when the first sieve of step S400 is finished after the first set time has elapsed, steam is generated by using a steam generator that communicates with the drum, and the generated steam is sprayed into the drum to form a drum. Your laundry.

Then, when the internal temperature of the steam generator reaches the set temperature, the steam generation is stopped, the second bubbling process (S500) is terminated, and during the preset water supply setting time (S600), the above-described first bubbling core (S400) and the second bubbling process (S500) is repeatedly performed sequentially, and, as described above, by generating steam at the time of lapping the laundry to supply the generated steam to the laundry in the drum, It is possible to obtain a sufficient blanketing effect with a smaller amount than the conventional one.

On the other hand, when the water supply setting time has elapsed in step S600, the drum is rotated to wash the laundry therein (S700) to terminate the overall washing operation of the present invention.

Next, an embodiment of the first wrapping process of FIG. 3 will be described with reference to FIG. 4.

<Example>

As shown in Figure 4, the first coat process of the drum washing machine according to the present invention, first, according to the input of the washing command by the user's key operation in the step (S300), inside the predetermined receiving space, for example, The water supply valve is opened in step S402 according to whether the first bag core set time has elapsed (S402) to the predetermined area between the drum and the tub, and the washing water is supplied to the receiving space (S403).

Next, by detecting the water level in the receiving space is increased in accordance with the washing water supply of the step (S403) to determine whether or not to reach the predetermined upper limit water level (S404).

As a result of the determination in step S404, when the water level rising in the accommodation space due to the wash water supply in step S403 does not reach the upper limit level, water is continuously supplied for the first set time. When the water level in the accommodation space reaches the upper limit level, the water supply valve is closed (S405), the water supply of the washing water is stopped, the drum motor is turned on (S406), and the circulation pump is pumped. To start (S407).

Then, according to the circulating pumping operation of the circulating pump according to the step (S407), the circulating pump circulates the wash water supplied in the receiving space and supplies the laundry into the drum containing the laundry (S408). Washing water is absorbed by the laundry inside, and the first packing of the laundry is performed.

In this state, the washing water is supplied into the drum to detect the water level in the accommodation space that is lowered as the first bag is loaded to determine whether the water level reaches the preset lower limit level (S409). As a result of the determination in step S409, when the water level in the accommodation space reaches or below the lower limit level, the drum motor is turned off (S410), and the pumping operation of the circulation pump is stopped (S411). As described above, the water supply valve is opened so that the washing water is resupplied into the accommodation space, and the first packing is repeatedly performed to sufficiently fill the laundry.

As a result of the determination of step S409, when the water level in the accommodation space does not reach the lower limit level and the state is maintained for a predetermined time or more, the process proceeds to step S500 where the first packing core by washing water ( S400) ends.

Next, an embodiment of the second wrapping process will be described with reference to FIG. 5.

<Example>

When the first envelope is completed in the above step (S400), the second envelope is performed.

As shown in FIG. 5, the second sieve opens the water supply valve (S501), communicates with the drum 200 containing the laundry, and introduces steam generation water into the steam generator 230 in which the heater is built. Supply (S502).

When the washing water is supplied into the steam generator 230 according to the step S502, it is determined whether the water level rising according to the washing water supply reaches a preset upper limit water level (S503), and as a result of the determination, the rising water level When the upper limit water level is reached (S504), the heater in the steam generator 230 is turned on (ON) (S505). Then, the supplied washing water is heated to generate steam according to the heating of the heater, and the generated steam is injected into the laundry in the drum 200 to form a second envelope.

Next, according to the steam generation of the step (S505), when the water level in the steam generator 230 reaches below the predetermined lower limit level (S506), the heater is turned off (S507), the second pre-set The second gun core is stopped according to whether the wet time is completed (S508), that is, in step S508, when the second gun core setting time is completed, the process proceeds to step S600, and the second cloth If the wet setting time has not elapsed, the process proceeds to step S501 where the second over-wetting operation is repeatedly performed while repeatedly repeating the above-described operation.

As described in detail above, the steam washing method of the drum washing machine according to the present invention, water supply can be performed with a small number of washing water, and also it can be suppressed to the maximum generation of the washing water unnecessary waste for the protection of the heater, In order to efficiently wash the laundry, the laundry can be heated before washing.

Although the invention has been described in detail only with respect to the specific examples described, it will be apparent to those skilled in the art that various modifications and variations are possible within the spirit of the invention, and such modifications and variations belong to the appended claims.

Claims (4)

According to a washing instruction, supplying the washing water into the drum for a first set time to perform a first filling of the laundry; When the first set time elapses, the first sieve is stopped, and the steam generator, which is in communication with the drum during the second set time, generates steam and injects the generated steam into the drum to form the second laundry. Performing hermitage; And And washing the laundry by rotating the drum and rotating the drum when the second set time elapses. The method of claim 1, wherein performing the first envelope is performed; Supplying the washing water to the washing water receiving area between the drum and the tub according to an input of a washing command by a user key operation; Determining whether or not a predetermined upper limit water level is reached by sensing a water level in the accommodation area that rises according to the wash water supply; As a result of the determination, when the water level in the receiving region reaches an upper limit level, the washing water supply is stopped, and a circulating pump in communication with the receiving region is turned on to turn the washing water in the receiving region into the drum. Supplying therein; Detecting whether the water level in the accommodation area is lowered as the washing water is supplied into the drum and reaching a predetermined lower limit water level; And, as a result of the determination, when the water level in the accommodation region does not reach the lower limit level and the first set time has elapsed, completing the first packing core. The method of claim 2, And as a result of the determination, when the water level in the receiving region reaches the lower limit level, turning off the circulation pump and refueling the washing water into the receiving region. How to wash steam in a drum washing machine. The method of claim 1, wherein performing the second sieve; Supplying wash water to the drum in communication with the drum and to a built-in heater; Determining whether an elevated level generated by the supplied washing water reaches a preset upper limit level; As a result of the determination, when the rising water level reaches the upper limit water level, heating the supplied washing water for a predetermined heating time through the heater to generate steam; Upon completion of the heating time, injecting the generated steam into the laundry in the drum for a set time to second wash the laundry; Upon completion of the set time, characterized in that the step of stopping the steam generation, characterized in that the steam washing method of the drum washing machine.

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