KR100531330B1 - washing method for dual spraying type drum washer - Google Patents

Abstract

The present invention relates to a washing method of a drum washing machine for washing laundry by dropping the laundry to a certain height, in particular, the hot and high-pressure steam is injected into the tub and drum during the washing and the washing water is circulated to wash the laundry performance It relates to a washing method of a dual jet drum washing machine that can be improved.

The washing method of the dual jet drum washing machine according to the present invention comprises the steps of: (a) watering the washing water into the tub; (B) operating steam generator to supply steam into the drum; And (c) pumping the wash water in the water supply tub to circulate the drum and supplying the washing water, so that the coating process can be performed quickly, and the sterilization effect and the washing performance of the laundry can be increased. Can save electric energy.

Description

Washing method for dual spraying type drum washer}

The present invention relates to a washing machine, and more particularly, to a washing method of a drum washing machine for washing laundry by dropping the laundry to a certain height.

In general, the drum washing machine washes by using friction between the drum and the laundry rotated by the driving force of the motor in the state in which the detergent and the washing water and the laundry are put in the tub and the drum which are horizontally installed. Not tangled, pounding and rubbing has a laundry effect.

1 is a perspective view showing a drum washing machine according to the prior art, Figure 2 is a side cross-sectional view showing a drum washing machine according to the prior art.

A conventional drum washing machine is installed to suspend a cabinet (2) forming an exterior as shown in Figs. 1 and 2 and a spring (4) inside the cabinet (2) and at the same time by a damper assembly (5). A tub 6 installed to be supported, a drum 8 rotatably installed inside the tub 6, in which washing water and laundry are contained, and protruding from the inner wall of the drum 8 at regular intervals. And a lift 8a for pulling up and dropping laundry as the drum 8 rotates, and a motor for rotating the drum 8 to be connected to the drum 8 at the rear of the tub 6. It comprises a (10).

In addition, the drum washing machine is installed on the upper side of the tub (6) and the water supply valve assembly 12 and the detergent box assembly 14 for supplying the washing water and detergent to the tub 6 and the drum (8), A drain pump assembly 16 is installed below the tub 6 to drain the wash water inside the tub 6 and the drum 8.

Here, the drum 8 has a plurality of dehydration holes (8h) formed on the inner wall surface so that the washing water can flow freely to the drum (8) and the tub (6) side as well as wash water from the laundry by centrifugal force during dehydration The water supply valve assembly 12 and the drain pump assembly 16 are configured to include a water supply valve (not shown) and a drain pump (not shown), respectively, to be washed according to the operation of the water supply valve and the drain pump. Water or drain the water.

In particular, the lower side of the tub 6 is equipped with a heater 20 so as to improve the washing performance by heating the wash water inside the tub 6 to a high temperature, the tub 6 is the heater 20 Heater mounting portion (6a) is formed to protrude downward to the bottom so that it can be mounted.

Looking at the operation of the prior art configured as described above are as follows.

First, when a washing stroke is performed in a state in which laundry is contained in the drum 8, the water supply valve is operated to open the washing water to be supplied into the tub 6 and the drum 8, but the washing water is supplied to the water supply. Passing through the valve assembly 12 and the detergent box assembly 14 is supplied into the tub 6 with detergent, an appropriate amount of washing water is supplied to the tub 6 in accordance with the amount of laundry.

At this time, when the drum (8) is stirred in the forward / reverse direction is made of the laundry, the water level of the wash water in the tub (6) is reduced, the water supply valve is opened to further wash water Will repeat.

Then, the motor 10 is operated to rotate the drum 8, the lift 8a raises the laundry to a certain height, and then washes the laundry to fall, the heater according to the user's setting 20 may be operated to heat the washing water inside the tub 6 to improve washing performance.

When the washing stroke is completed as described above, the drainage pump is operated to drain the washing water, and then the motor 10 is operated at high speed to rotate the drum 8 at high speed so that the washing water from the laundry is centrifugal. Intermittent dehydration proceeds by exiting, and the water supply valve is opened again to supply washing water and at the same time the drum 8 rotates to rinse.

As such, rinsing and intermittent dehydration are repeatedly operated, and finally, the dehydration stroke is performed to complete the washing.

However, in the conventional drum washing machine, since the heater 20 is installed in the heater mounting portion 6a formed to protrude downward in the tub 6, the heater mounting portion 6a and the heater 20 are locked. Washing water and electric energy are wasted because the heater 20 is operated to heat the wash water in a state where the wash water is supplied, and washing performance is deteriorated due to residual detergent and debris remaining in the heater mounting part 6a even when rinsing. There is this.

The present invention has been made in order to solve the above problems of the prior art, by heating the washing water to generate a high-temperature high-pressure steam to be sprayed into the drum and circulating the washing water inside the tub and weaving The purpose of the present invention is to provide a washing method of a dual jet drum washing machine that can be made quickly and improves sterilization and washing performance.

Washing method of a dual jet drum washing machine according to the present invention for solving the above problems is (A) water supplying the wash water into the tub; (B) operating steam generator to supply steam into the drum; And (c) pumping the wash water in the water supply tub to circulate the supplied water into the drum to supply the washing water.

Here, in the steps (b) and (c), the steam and the washing water are preferably injected. During the step (c), the pump device performing the pumping process may repeat on / off at a predetermined time period. The step (b) may proceed simultaneously with the step (a). The step (c) may proceed simultaneously with the step (a). The step (c) may proceed simultaneously with the step (b). The drum may be tumbled during the steps (b) and (c).

The step (b) and the step (c) are performed simultaneously, preferably after the step (a) is completed. In addition, the washing method includes the steps of (d) re-watering the wash water into the tub; And (e) it is preferable to proceed further comprising the step of circulating and supplying the re-supply wash water to the drum.

Here, the drum may be tumbled during the step (e). It is preferable that the pump device performing the pumping process during the step (e) repeats on / off at a predetermined cycle. The steps (a), (b) and (c) may be performed simultaneously.

In addition, the washing method is preferably carried out further includes the step of driving the (bar) drum. The step (bar) is preferably performed after the steps (a), (b) and (c) are completed. The step (bar) may be performed simultaneously with at least one of the steps (a), (b) and (c). In the step (bar), the drum may be tumbled.

On the other hand, in order to achieve the above object, the washing method of the dual jet drum washing machine according to the present invention comprises the steps of: (A) watering the wash water into the tub; And (b) simultaneously spraying the steam generated by the steam generator and the washing water circulated by the pump apparatus into the drum.

Here, the drum is preferably tumbled during the step (b). In addition, after the completion of the step (b), (c) resuspending the wash water into the tub; And (d) pumping the rewashed wash water to circulate and supply the inside of the drum at least once or more times. Here, the drum may be tumbled during the step (d).

On the other hand, in order to achieve the above object, the washing method of the dual jet drum washing machine according to the present invention (A) the washing method comprises the steps of: supplying the washing water into the tub; (B) supplying the wash water to a steam generator, generating steam by driving a heater of the steam generator, and supplying steam to the drum; And (c) pumping the wash water in the water supply tub and circulating the supplied water into the drum to supply the washing water.

Here, the steps (b) and (c) may be performed after the step (a). The step (a) and the step of supplying the wash water to the steam generator may be started at substantially the same time. Driving the heater to generate steam may proceed after completion of step (a). The step (b) is preferably repeated at least once when the temperature inside the tub is below the set temperature. In addition, the washing water is preferably supplied to the steam generator during the step (a).

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

3 is a perspective view showing a dual jet drum washing machine according to the present invention, Figure 4 is a side sectional view showing a dual jet drum washing machine according to the present invention, Figure 5 is a perspective view showing a steam generator according to the present invention. .

The dual jet drum washing machine according to the present invention is installed so as to be suspended by a spring 54 in the cabinet 52 and the cabinet 52 to form an exterior as shown in FIGS. Tub 56 is installed so as to be supported by the 55, the drum 58 is rotatably installed inside the tub 56 to contain the wash water and laundry, and a predetermined interval on the inner wall surface of the drum 58 A lift 58a is installed to protrude so that the laundry is pulled up and dropped as the drum 58 is rotated, and the drum 58 is installed to be connected to the drum 58 at the rear of the tub 56. And a steam generator 70 positioned above the tub 56 to heat washing water with steam of high temperature and high pressure to be supplied into the tub 56 and the drum 58. And the bottom of the tub 56 and the steam foot Is provided between the device 70 is configured to include a pump device 80 such that rotation to the upper side of the tub 56 to pump the wash water in the tub 56. Here, as shown, the discharge side of the steam generator 70 is preferably disposed so as to communicate with the inner space of the tub (56).

In addition, the drum washing machine is installed to be located above the tub 56, the water supply means 62 for supplying the washing water into the tub 56 and the drum 58, and the lower side of the tub 56 A drain pump assembly 66 is installed to drain the wash water inside the tub 56 and the drum 58, and the steam generator 70 is installed to be connected to the water supply means 62.

In detail, the water supply means 62 is installed on the rear surface of the cabinet 52 to be connected between the water supply valve assembly 62a and the water supply valve assembly 62a and the tub 56 to control water supply. Detergent box assembly 62b for storing detergent and first and second water supply passages 62c branched from the water supply valve assembly 62a and connected to the detergent box assembly 62b and the steam generator 70, respectively. 62c ') and one end of the steam generator 70 are connected to each other, and the other end is positioned inside the tub 56 and the drum 58 so that steam is introduced into the tub 56 and the drum 58. It comprises a steam flow path 62d to supply.

Here, the drum 58 has a plurality of dehydration holes (58h) formed on the inner wall surface so that the washing water can flow freely to the drum (58) and the tub (56) side as well as wash water from the laundry by centrifugal force during dehydration The water supply valve assembly 62a and the drain valve assembly 66 are configured to include a water supply valve (not shown) and a drain pump (not shown), respectively, to be washed according to the operation of the water supply valve and the drain pump. Water or drain the water.

The first and second water supply passages 62c and 62c 'are branched from the water supply valve assembly 62a to be connected to the detergent box assembly 62b and the steam generator 70 to supply wash water. In addition, the end of the steam flow path (62d) (62d ') is formed in the shape of a nozzle so that the steam can be injected at a high speed, penetrating the gasket (57) provided at the inlet of the tub 56, the tub 56 And it is preferable to be installed so that steam is supplied into the drum (58).

Next, the steam generator 70 is installed to be positioned above the tub 56 so that the second water supply passage 62c 'and the steam passage 62d are relatively short, and are advantageous for repair and inspection. This is preferred.

In particular, the steam generator 70 is installed so that the second water supply passage (62c ') and the steam passage (62d) is connected to the upper end as shown in Figure 5 formed a space for storing the wash water therein It is installed between the sealed pressure vessel 72 and the heater 74 installed to be located inside the pressure vessel 72 to heat the wash water, and between the second water supply passage 62c 'and the pressure vessel 72. And an inlet valve 76a for adjusting the water supply of the wash water, and a discharge valve 76b provided between the steam passage 62d and the pressure vessel 72 to regulate the discharge of steam.

Here, the inlet valve (76a) and the discharge valve (76b) is a pressure valve to control the opening and closing according to the pressure inside the pressure vessel (72), the inlet valve (76a) is inside the pressure vessel (72) When the pressure is less than a predetermined pressure is opened, the discharge valve 76b may be electronically controlled or mechanically adjusted to open when the pressure inside the pressure vessel 72 is above a predetermined pressure. Therefore, the pressure inside the pressure vessel 72, that is, the wash water is converted into steam, and the steam is supplied through the discharge valve 76b by the elevated pressure.

In addition, the heater 74 is installed so as to be located on the lower side of the pressure vessel 72 so as to heat the washing water even if only a predetermined amount of washing water is supplied to the pressure vessel 72.

In addition, the steam generator 70 is installed on the pressure vessel 72, the temperature for controlling the operation of the discharge valve 76b when the steam temperature in the pressure vessel 72 is above the set temperature (To) A sensor 77 and an automatic pressure switch 79a installed at one side of the temperature sensor 77 to first stop the operation of the heater 74 when the pressure inside the pressure vessel 72 is greater than or equal to the set pressure Po. And an automatic temperature switch 79b, such as a thermostat, installed on one side of the heater 74 to secondly stop the operation of the heater 74 when the temperature of the heater 74 is higher than a predetermined temperature T ₁ . It is configured to include more.

Of course, the automatic temperature switch 79b is additionally added to prevent overheating of the heater 74 when the automatic pressure switch 79a does not operate normally or leaks in the pressure vessel 72. Can be installed.

In addition, the steam generator 70 is a styrofoam installed to surround the outside of the pressure vessel 72 in order to prevent the heat loss to the outside through the pressure vessel 72 as the heater 74 is operated. It is configured to further include a heat insulating material (75).

On the other hand, the steam generator 70 may be detected by the separate water level sensor (not shown) installed in the pressure vessel 72 whether the water supply and the water supply of the washing water in the pressure vessel 72, Structurally, the washing water in the pressure vessel 72 may be configured to supply only up to a certain level.

The steam generator 70 is controlled by a controller (not shown) for controlling the operation of the washing machine, the operation of the heater 74, the inlet valve 76a and the discharge valve 76b.

Next, the pump device 80 is connected to the tub 56 by the first circulation passage 82, and the tub 56 is connected by the steam passage 64d and the second circulation passage 84. It is installed on the lower side of the pump to wash the water introduced through the first circulation passage 82 to exit through the second circulation passage (84).

6 is a flowchart illustrating a washing method of a dual jet drum washing machine according to the present invention.

Looking at the washing method of the dual jet drum washing machine according to the present invention configured as described above with reference to FIG.

First, when the user puts the laundry in the tub 56, the drum washing machine, and then, when the drum washing machine is operated, the water supply level of the washing water to be supplied to the tub 56 is determined while the detection of the amount of water is prioritized (S110). )do.

Here, the water level supplied into the tub 56 is a preferable water supply level according to the amount of water. When the water supply level of the washing water is determined, the washing water is supplied into the tub 56 by the determined water level (S120). At this time, the washing water is preferably supplied into the tub 56 while sequentially passing through the first water supply passage 62c and the detergent box assembly 62b by opening the water supply valve assembly 62a.

Of course, the wash water may be supplied into the tub 56 while sequentially passing through the second water supply passage 62c ', the steam generator 70, and the steam passage 62d by opening the inlet valve 76a. It may be.

When the water supply to the steam generator 70 is completed, the heater 74 of the steam generator 70 is driven to heat the wash water to generate steam of high temperature and high pressure.

In addition, while the water supply of the wash water to the tub 56 is in progress, the step of supplying the wash water to the steam generating device 70 is also in progress. Here, the water supply to the tub 56 is more preferably started at substantially the same time as the water supply to the steam generator (70). This is for precisely controlling the time at which steam is generated in the steam generator 70 in view of the operation control of the washing machine, and the steam generation time and the driving of the drum 58 and the water supplied in the tub 56. This is to control the circulation of the wash water without generating an error in time.

Here, since the water supply completion point of the tub 56 is different according to the amount of laundry, the tub 56 is turned on immediately after the water supply to the steam generator 70 is completed. Since the steam is injected into the tub 56 before the water supply to the inside is completed, the effect by the dual injection can be reduced. Therefore, in order to prevent this, it is preferable that the driving of the heater 74 proceeds after the water supply to the tub 56 is completed.

Here, the step of generating the steam is preferably proceeded to reach the set temperature at least once or more times when the temperature inside the tub 56 is below the set temperature.

Thereafter, the steam issued from the steam generator 70 is supplied into the tub 56 and the drum 58.

On the other hand, when the wash water supply to the tub 56 is completed, weaving proceeds (S130). At this time, the weaving is carried out by the operation of the steam generator 70 and / or the operation of the pump device (80).

That is, when the steam generator 70 is operated, the inlet valve 76a is opened so that the washing water is supplied to the pressure vessel 72 side of the steam generator 70 to a predetermined level through the inlet valve 76a.

At this time, when water is supplied to the predetermined water level, the inflow valve 76a is shut off, and the heater 74 is continuously heated to generate the steam while heating the washing water supplied into the pressure vessel 72. Is done.

In addition, the generated steam is injected into the tub 56 and the drum 58 while flowing along the steam flow path 62d due to the opening of the discharge valve 76b.

Due to this, the wetting of the laundry inside the drum 58 is performed quickly.

In addition, the washing water supplied into the tub 56 by the operation of the pump device 80 for weaving is pumped while the first circulation passage 82 and the second circulation passage 84 or the steam passage (64d) As a result, the laundry is sprayed onto the laundry in the drum 58, and a wetting of the laundry is performed. Here, when the steam is injected into the tub 56 and the drum 58, the washing water circulated by the pump device 80 is preferably dual sprayed together. At this time, the drum 28 is also preferably driven in a manner that is rotated or tumbled.

Although the above-described wetting process is preferably performed after the aforementioned water supply process of the washing water is completed, the wetting process may be controlled to proceed simultaneously with the water supply process during the water supply process of the washing water. have.

In addition, a series of processes for wetting the fabric by providing steam through the steam generator 70 in the above-described fabric wetting process and a series of processes for wetting the fabric by spraying the washing water by operating the pump device 80 is It is preferable to proceed at the same time, but after performing the primary wetting by providing steam, the washing water is sprayed to perform the re-wetting again, or by spraying the washing water after the primary wetting is performed to provide the steam again. It may be controlled to carry out a full focus.

Of course, it may be controlled so as to simultaneously carry out the steaming process using steam during the water supply process of the above-described washing water, or the process of weaving the laundry using the pumped washing water injection during the water supply process of the above-described wash water. It may be controlled to proceed simultaneously.

In addition, when the above-described wetting process is completed, the drum 60 is driven by operating the motor 60 to proceed with washing the laundry (S140).

At this time, the laundry is pulled up to a certain height by the lift (58a) provided on the inner wall surface of the drum by the rotation of the drum 58, and then washed while falling.

In particular, even during the washing of the laundry is controlled so that the continuous supply of steam through the driving of the above-described steam generating device 70 and the continuous injection of the washing water through the driving of the pump device 80 is more controlled. desirable.

When the steam is provided into the drum 56 by the operation of the steam generator 70 during the washing stroke, the temperature inside the drum 56 is most active due to the steam. Since the temperature is maintained, the washing performance can be further improved.

In addition, when the washing water containing the detergent in the tub 58 is injected into the drum 56 by the driving of the pump device 80 during the washing stroke is carried out due to the washing water is sprayed Since the detergent is evenly selected as the site, the washing performance can be further improved.

On the other hand, the washing process proceeds through the driving of the drum 58 is preferably performed after the water supply process and the weaving process is completed as described above, but also during the water supply process or during the wetting process the drum 58 It may be set to proceed with the washing process by driving.

That is, at least one of supplying the washing water into the tub 56, supplying steam into the drum 58, pumping the washing water inside the tub 56, and circulating and supplying the washing water into the drum 56. Preferably, the drum 56 is driven simultaneously with either step. More preferably, the drum 56 is driven at the same time as the steam supplying step or the washing water circulation step after the washing water to the tub 58 is supplied with water.

In this case, the washing method preferably further comprises the step of re-supplying the wash water into the tub (56). In this case, after the remaining wash water is discharged to the tub 56, the new wash water may be resupplied, or the wash water may be additionally supplied in addition to the remaining wash water.

In addition, it is preferable that the washing water in the tub 56 is pumped by the pump device 80 and circulated into the drum 58 after the rewatering is performed. At this time, the drum 58 is preferably driven.

The drum 58 is preferably driven in a tumbled manner after or after the wetting process. The tumble is generally a rotational speed at which laundry is in close contact with the inner wall of the drum 58 by centrifugal force. The rotational speed that overcomes the acceleration of gravity is referred to as the rotational speed of 1G or more.), Or the drum 58 is rotated at a low speed by stirring in the forward and reverse directions.

In addition, after the weaving process is completed, the drum is preferably progressed to alternately go through the process of high speed rotation and tumble at a rotation speed of 1G or more.

As described above, the washing method of the dual jet drum washing machine according to the present invention has the following effects.

First, the washing water during the initial water supply or the washing water is injected into the tub by heating the vaporized high-temperature high-pressure steam while passing through the steam generating device to perform the soaking action of the laundry in the tub, and quickly the high temperature atmosphere in the tub Can be activated to more quickly activate the detergent's action. Through this, the sterilization and washing performance of the laundry contained in the tub can be improved, and only part of the washing water is converted into steam at a high temperature and high pressure, thereby spraying the washing water and electric energy.

Secondly, by pumping the wash water supplied into the tub at the time of initial water supply or washing water to be sprayed into the laundry in the drum, the coating is made faster and the washing performance is improved.

Third, the drum is tumbled when the steam is supplied into the drum or the pumped water is circulated, thereby further improving the wetting and washing performance.

Fourth, since the hot steam and the circulated wash water are dual sprayed, the contact area between the steam and the circulated wash water is increased, so that heat transfer is quick. Thus, the inside of the tub is quickly heated to a high temperature atmosphere to activate the detergent action and wash. Not only can it shorten time, but it also shortens the filling time of laundry.

Fifth, since the discharge side of the steam supply unit is provided to be in communication with the inner space of the tub, the user can manipulate the steam to be more conveniently supplied into the tub.

1 is a perspective view showing a drum washing machine according to the prior art

Figure 2 is a side cross-sectional view showing a drum washing machine according to the prior art

Figure 3 is a perspective view of a dual jet drum washing machine according to the present invention

Figure 4 is a side cross-sectional view of a dual jet drum washing machine according to the present invention

5 is a perspective view showing a steam generator according to the present invention

6 is a flowchart illustrating a washing method of a dual jet drum washing machine according to the present invention.

Explanation of symbols about main parts of the drawings

52: cabinet 56: tub

58 drum 62 water supply means

62a: water supply valve assembly 62b: detergent box assembly

62c, 62c ': 1st and 2nd water supply flow path 62d: steam flow path

70: steam generator 72: pressure vessel

74: heater 75: heat insulating material

76a: inlet valve 76b: discharge valve

77: temperature sensor 79a: automatic pressure switch

79b: Automatic temperature switch 80: Pump device

82: first circulation euro 84: second circulation euro

Claims (26)

(A) watering the wash water into the tub; (B) A steam supplying step of supplying the washing water into the steam generator and a steam generating the steam using the washing water supplied to the steam generator by driving a heater provided in the steam generator. A steam supplying step including a supplying second step and a steam supplying third step of supplying the generated steam to the drum by its own pressure; And (C) The washing method of the dual-jet drum washing machine that includes the step of pumping the washing water in the water supply tub and circulating into the drum. The method of claim 1, The washing method of the dual jet drum washing machine, characterized in that the steam and the washing water is sprayed in the steps (b) and (c). The method of claim 1, The pumping device for performing the pumping process during the step (c) is a washing method of a dual jet drum washing machine, characterized in that the on / off repeats a predetermined time period. The method of claim 1, Wherein (b) is a washing method of a dual jet drum washing machine, characterized in that proceeds substantially simultaneously with the (a) step. The method of claim 1, (C) step is a washing method of a dual jet drum washing machine, characterized in that proceeds substantially simultaneously with the (A) step. The method of claim 1, Wherein (c) is a washing method of a dual jet drum washing machine, characterized in that proceed substantially simultaneously with the (b) step. The method of claim 6, Washing method of a dual jet drum washing machine characterized in that the drum is tumbled during the steps (b) and (c). The method of claim 6, The (b) step and the (c) step is carried out at the same time, the washing method of the dual jet drum washing machine, characterized in that proceeds after the (a) step is completed. The method of claim 8, (D) refluxing the wash water into the tub; And (E) The washing method of the dual-jet drum washing machine further comprises the step of pumping the re-supply wash water and circulating into the drum. The method of claim 9, Washing method of a dual jet drum washing machine characterized in that the drum is tumbled during the step (e). The method of claim 9, The pumping device for performing the pumping process while the step (e) is in progress washing method of a dual jet drum washing machine, characterized in that repeated on / off at a predetermined cycle. The method of claim 1, Washing method of the dual jet drum washing machine, characterized in that the (a) step, the (b) step and the (c) step proceed substantially simultaneously. The method of claim 1, (F) washing method of a dual jet drum washing machine further comprising the step of driving the drum. The method of claim 13, The (bar) step is a washing method of a dual jet drum washing machine, characterized in that proceeds after the steps (a) and (b) and (c) are completed. The method of claim 13, Wherein (bar) is a washing method of a dual-jet drum washing machine, characterized in that substantially proceeds simultaneously with at least one of the steps (a), (b) and (c). The method of claim 13, The washing method of the dual-jet drum washing machine, characterized in that the drum is tumbled in the (bar) step. (A) watering the wash water into the tub; And (B) The washing method of the dual-jet drum washing machine that includes the step of spraying the steam generated by the steam generator and the washing water circulated by the pump device at the same time into the drum. The method of claim 17, Washing method of a drum washing machine, characterized in that the drum is tumbled during the step (b). The method of claim 17, After completion of step (b) above, (C) resupplying wash water into the tub; And (D) The washing method of the dual jet drum washing machine characterized in that the pumping of the re-watered washing water is circulated into the drum and supplied at least once. The method of claim 19, The drum washing method, characterized in that the drum is tumbled during the step (d). (A) watering the wash water into the tub; (B) supplying the wash water to a steam generator, generating steam by driving a heater of the steam generator, and supplying steam to the drum; And (C) In the washing method of the dual-injection drum washing machine which includes the step of pumping the washing water in the water supply tub and circulating into the drum, the steps (B) and (C) are (A) washing method of a dual jet drum washing machine characterized in that proceeds after. The method of claim 1, Wherein (b) and (c) step is the washing method of the dual jet drum washing machine, characterized in that proceeds after the step (a). The method of claim 22, The washing method of the dual jet drum washing machine characterized in that the step (a) and the steam supply first step of supplying the wash water into the steam generator is started at the same time. The method of claim 22, The second step of supplying steam to generate steam using the wash water supplied to the steam generator by driving a heater provided in the steam generator is performed after the completion of step (a). How to wash a drum washing machine. The method of claim 1, Wherein (b) is the washing method of the dual-jet drum washing machine characterized in that the process is repeated at least once if the temperature inside the tub is below the set temperature. The method according to any one of claims 1 to 17, Washing method of the dual jet drum washing machine characterized in that the washing water is supplied into the steam generator during the step (a).