KR20100119451A - Washing machine and method to control thereof - Google Patents

Abstract

PURPOSE: A washing machine and a control method thereof are provided to prevent the water from becoming simultaneously discharged from a plurality of tubs. CONSTITUTION: A washing machine comprises a plurality of tubs, a plurality of water discharge units and a control unit(120). The tub comprises a pair of first and second tubs(41)(42). The water discharge unit discharges the water from the tub to outside. The water discharge unit comprises a first water discharge unit(100) connected to the first tub and a second water discharge unit connected to the first tube and the first water discharge unit. The control unit is connected to the water discharge units to selectively discharge the water from the tubs.

Description

Washing machine and method to control

The present invention relates to a washing machine and a control method thereof, and to a drainage structure and a drainage control method of a washing machine having a plurality of washing tanks capable of washing laundry according to the capacity and type of the laundry.

In general, a washing machine (usually a drum washing machine) is a device for washing a contaminated laundry (water) by using one washing tank and washing with water and a detergent. (Specifically, washing water) to separate the contamination of the fabric with a wash, a rinse stroke to rinse the foam or residual detergent with water (specifically, rinsing water) without detergent, and drainage to drain the washing water. The washing is performed by a series of operations such as stroke and dewatering stroke for dewatering the fabric at high speed.

However, depending on the type and the material of the cloth may not be able to put together in one washing tank, and the washing machine with one washing tank was put separately together to separate the laundry can not be put together. In this case, the inconvenience of separate washing and the washing machine must be operated several times (for example, two times), which causes a great waste of time and energy. In addition, even when a small amount of cloth is to be washed, if the washing tank is a large capacity, the large capacity of the washing tank has to be driven, resulting in unnecessary waste of power.

In recent years, economical purchasing power is generated, and in order to solve the problems described above, two large-capacity and small-capacity washing machines may be purchased and used. However, when each washing machine performs drainage or dehydration administration at the same time, the limited sewage of the installation place is limited. Due to the capacity, washing water can overflow beyond the sewer.

In addition, since the respective drainage device must be provided in each washing machine, the manufacturing cost increases, and there is a problem in that the drainage administration between the two washing machines cannot be controlled organically.

In addition, in the conventional washing machine, when a plurality of washing tanks are configured in one washing machine, the structure of the drainage device is not disclosed.

Embodiments of the present invention provide a washing machine and a control method thereof to prevent the washing water in the plurality of washing tanks drained at the same time.

In addition, embodiments of the present invention provides a washing machine and a control method for selectively draining the plurality of washing machines.

In addition, embodiments of the present invention provides a washing machine and a control method thereof that can reduce the manufacturing cost of the drainage provided in one washing machine having a plurality of washing tanks.

According to an aspect of the present invention, a plurality of washing tanks, a plurality of drainage for discharging the washing water of the plurality of washing tanks to the outside, and connected to the plurality of drainage device to selectively wash the wash water of the plurality of washing tanks It includes a control device for draining.

The plurality of washing tanks include a pair of first and second washing tanks, and the drainage device includes a first drainage device connected to the first washing bath, and a second drainage device connected to the first washing tank and the first drainage device. Device.

The first drainage device includes a first drain pipe having one end communicating with the first washing tank and the other end extending outwardly, and the second drainage device having one end communicating with the second washing tank and the other end being connected with the first drain pipe. And a second drain pipe communicated with each other, and a drain valve for opening and closing the second drain pipe.

The first drainage device further includes a drain valve for opening and closing the first drain pipe.

The first drainage device further includes a drain pump provided downstream of the confluence of the first drainage pipe with the second drainage pipe.

An end portion of the second drain pipe extends to the outside of the main body, and the first drainage device further includes a connection pipe having one end communicating with the first drain pipe and the other end communicating with the second drain pipe.

At least one of the connecting pipe and the second drain pipe further includes a connector to facilitate coupling of the second drain pipe and the connecting pipe.

The control device is a microcomputer for selectively opening and closing the first and second drain valves.

The microcomputer closes the second drain valve and opens the first drain valve when the first washing tank is drained.

The microcomputer closes the first drain valve and opens the second drain valve when draining the second washing tank.

When the simultaneous drainage command is input to the first and second washing tanks, the control device drains one of the first and second washing tanks and drains the other washing tank.

The control device is an opening and closing device for selectively opening and closing the first and second drain pipe by the flow of the wash water in the first and second drain pipe.

The opening and closing device includes an opening and closing member rotatably provided by the flow of the wash water in the first and second drain pipes.

The opening and closing device further includes a stopper for preventing over-rotation of the opening and closing member.

The stopper includes a first stopper for supporting the opening and closing member when the opening and closing member closes the first drain pipe, and a second stopper for supporting the opening and closing member when the opening and closing member closes the second drain pipe. .

The first drainage device further includes a drainage pump provided in the middle of the first drainage pipe, and the opening and closing member is rotated by the pump pressure of the drainage pump to open the first drainage pipe when the drainage pump is driven. The second drain pipe is closed.

The second washing tank is disposed above the first washing tank, and the opening / closing member is rotated by the washing water pressure on the side of the second washing tank when only the drain valve of the drain valve and the drain pump is driven. Open and close the first drain.

The plurality of washing tanks are first and second washing tanks arranged up and down.

According to another aspect of the present invention, a first washing tank, a second washing tank disposed above the first washing tank, a first drain pipe for discharging the washing water of the first washing tank to the outside, and the second washing tank. It may include a second drain pipe for discharging the wash water to the outside, and an opening and closing device for selectively opening and closing the first and second drain pipe.

The opening and closing device closes the second drain pipe when opening the first drain pipe, and closes the first drain pipe when opening the second drain pipe.

A drain pump may be provided in the middle of the first drain pipe, and a drain valve may be provided in the middle of the second drain pipe.

The opening and closing device is an opening and closing member that is moved by the pressure of the wash water in the first and second drain pipe.

The opening and closing member is rotatably coupled to the connection portion of the first and second drain pipe.

In addition, according to another aspect of the present invention, the first washing tank, the second washing tank disposed above the first washing tank, a first drain pipe for discharging the washing water of the first washing tank to the outside, and And a second drain pipe for discharging the washing water of the second washing tank to the outside, a pair of drain valves for opening and closing the first and second drain pipes, and a control device for selectively opening and closing the pair of drain valves. It can be done by.

A confluence unit for joining the wash water of the first and second drain pipes may be provided, and a drain pump may be provided downstream of the confluence unit.

When the control device opens the drain valve for opening and closing the first drain pipe, the control device closes the drain valve for opening and closing the second drain pipe and drives the drain pump.

The control device closes the drain valve to open and close the first drain pipe when opening the drain valve to open and close the second drain pipe.

In addition, according to another aspect of the present invention, in the washing machine control method comprising a plurality of washing tanks and a drainage device for discharging the washing water of the plurality of washing tanks to the outside, whether the plurality of washing tanks is a drainage administration; If the plurality of washing tanks at the same time drainage administration, and determines to drain the washing water of the plurality of washing tanks sequentially.

The plurality of washing tanks include first and second washing tanks, and sequentially draining the washing water of the plurality of washing tanks drains any one of the first and second washing tanks and then drains the other.

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

1 is a perspective view showing the appearance of a washing machine according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing the configuration of a washing machine according to an embodiment of the present invention.

In Figures 1 and 2, the washing machine according to one embodiment of the present invention is provided with a plurality (for example, two) of the doors 11 and 12 into which the bag is inserted in the upper and lower portions of the main body 10 forming the appearance. An input unit 20 for inputting a user command related to the operation of the washing course and the washing machine is provided between the plurality of doors 11 and 12, and a display unit 21 for displaying the operating states of the washing course and the washing machine.

In the present embodiment, the main body 10 is provided to surround the first and second washing tanks 41 and 42, and the first washing tank 41 side and the second washing tank 42 side communicate with each other in the main body 10.

The input unit 20 uses a power button, an operation / stop button for starting the operation of the washing machine, and a plurality of washing tanks capable of washing the cloth separately, such as simultaneous washing or independent washing. And a washing tank selection button for selecting a washing tank to be used to proceed the operation, and a course and function button for selecting a washing course and a washing function for each washing tank. The shape of the input unit 20 is not necessarily limited thereto and may be configured in various forms.

In addition, detergent supply parts 31 and 32 for supplying detergents to the plurality of washing tanks 41 and 42 are respectively provided at the upper left and left centers of the main body 10.

In the present exemplary embodiment, detergent supply units 31 and 32 for supplying detergents to the plurality of washing tanks 41 and 42 are provided, respectively, but the flow paths of the detergent supplied to the plurality of washing tanks 41 and 42 are separated from each other. It is also possible to implement the detergent supply unit 31 or 32 as one so that detergent can be supplied to the washing tank (41, 42). In addition, the positions of the detergent supply units 31 and 32 are not necessarily limited thereto, and may be installed at any position where the user can easily add detergent.

In FIG. 2, in the washing machine according to the first embodiment of the present invention, a plurality of washing tanks (eg, two) that can separate and wash cloths according to the capacity or type of cloth inside the main body 10 may have a washing tank. The first washing tank 41 for washing a large capacity (for example, 10Kg or more) is installed on the lower side, and the second washing tank 42 for washing of a smaller capacity than the washing tank 41 on the upper side. Is installed.

Although the first and second washing tanks 41 and 42 may be configured as washing tanks having the same capacity as necessary, the washing tanks having a plurality of washing tanks 41 and 42 may be separately installed in a large capacity and a small capacity. desirable. As mentioned above, this is to prevent unnecessary waste of power by driving only a small amount of the second washing tub 42 when washing a small amount of cloth (especially boiled washing).

The basic configuration of the first and second washing tanks 41 and 42 is the same, and inside the cylinders, first and second drums 51 and 52 having a plurality of holes are rotatably installed, respectively. A driving device for rotating the first and second rotary shafts 61 and 62 connected to the first and second drums 51 and 52 to perform washing, rinsing, and dehydration strokes outside the rear side of the second washing tanks 41 and 42. Are respectively installed. As a driving device, the driving force of the direct-connected motor 71 for rotating the first rotary shaft 61 and the motor 72 and the motor 72 fixed to the outside of the second washing tub 42 is controlled by the second rotary shaft 62. Is provided with a driving belt (73). The driving device is not necessarily limited thereto, and can be configured in the opposite manner to the present embodiment, and can be directly mounted on the first and second rotary shafts, or a motor and a driving belt can be mounted, and a driving method using a clutch or the like. It is also possible to implement to drive each washing tank 41, 42 simultaneously or independently.

First and second water supply devices 81 and 82 for supplying water (washing water or rinsing water) to the respective washing tanks 41 and 42 are installed at the upper portions of the first and second washing tanks 41 and 42. . The first and second water supply devices 81 and 82 supply external water pipes 80 and the first and second to supply water (washing water or rinsing water) into the first and second washing tanks 41 and 42. First and second water supply valves installed in the middle of the first and second water supply pipes 81a and 82a and the first and second water supply pipes 81a and 82a connecting the detergent supply units 31 and 32 to control water supply. (81b, 82b). This configuration allows the water supplied into the first and second washing tanks 41 and 42 to pass through the first and second detergent supply parts 31 and 32 so that the first and second detergent supply parts 31 and 32 are internal. Detergent is to be supplied to the first and second washing tank (41, 42) with water.

In the first embodiment of the present invention, only the basic configuration of a washing machine is disclosed as an example, but it is a matter of course that a drying apparatus or the like can be independently configured in each washing tank for additional functions.

In addition, the first embodiment of the present invention is electrically connected to the first and second drainage device (100, 110), and the drainage device (100, 110) for draining the water in the first and second washing tank (41, 42) And a control device (hereinafter referred to as a controller) for selectively draining the wash water of the first and second washing tanks 41 and 42 to the outside.

The first drainage device 100 has a first drainage pipe 101 having one end communicating with the first washing tank 41 and the other end extending outward, and a first drainage valve 102 opening and closing the first drainage pipe 101. It includes, the outlet side of the first drain valve 102 is provided with a drain pump 103 for forcibly flowing the wash water and a drain guide tube 104 for guiding the wash water discharged by the drain pump to the outside. Can be.

The second drainage device 110 has a second drain pipe 111 having one end communicating with the second washing tank 42 and the other end extending to the first drainage device 100, and a second drain pipe 111 opening and closing the second drainage pipe 111. Drain valve 112 is included.

The second drain pipe 111 is not exposed to the outside of the main body 10 through the opened upper surface of the first washing tank 41 side and the opened lower surface of the second washing tank 42 side from the second washing tank 42 side. It extends to the 1st washing tank 41 side.

Therefore, the second drain pipe 111 extends toward the first washing tank 41 without being exposed to the outside and joins the first drain pipe 101 between the first drain valve 102 and the drain pump 103.

The first and second drain pipes 101 and 111 are joined to the drain pump 103, and the drain pump 103 is connected to the external drain pipe 104.

3 is a control driving diagram of a washing machine according to an embodiment of the present invention, and includes an input unit 20, a sensing unit 122, a control unit 120, and a driving unit 121.

The input unit 20 supplies the control unit 120 with driving information regarding a washing course (for example, simultaneous washing or independent washing) and washing functions of the first and second washing tanks 41 and 42 selected to be used simultaneously or independently. Enter it.

The detector 122 detects the water level of each of the washing tanks 41 and 42 and transmits the detected water level to the controller 120.

The controller 120 is a microcomputer that controls the overall operation of the washing machine such as washing and rinsing, draining and dehydrating the first and second washing tanks 41 and 42 according to the driving information input from the input unit 20. The control unit 120 when washing is performed using both the first and second washing tanks 41 and 42 in a state in which the cloth is put into the second washing tanks 41 and 42 or the capacity of the cloth and the washing course are different. Perform each administration according to each administrative time memorized in).

In this way, while the first and second washing tanks 41 and 42 perform the washing process by the control unit 120, the drainage of one of the first and second washing tanks 41 and 42 is completed before the other. Administration can proceed.

In this embodiment, when the drainage strokes of the first and second washing tanks 41 and 42 start at the same time, the drainage stroke of the washing tank is held after holding the drainage stroke of one washing tank and performing the drainage stroke of the other washing tank. To perform the drain stroke of the first and second washing tank (41, 42) sequentially.

In addition, if another drainage stroke is started before the completion of one drainage stroke, another drainage stroke of the washing tank which started the drainage stroke is held until the drainage stroke of the washing tank which started the drainage stroke is ended. After that, the drainage of the held laundry tank is performed.

To this end, the control unit 120, if any one of the first washing tank 41 and the second washing tank 42 performs the drainage stroke of the first washing tank so as not to perform the drainage of the other washing tank until the completion of the first, The two drain valves 102 and 112 and the drain pump 103 are controlled.

In the present embodiment, for example, when the first and second washing tanks 41 and 42 are required to perform drainage administration simultaneously, the control unit 120 allows the first washing tank 41 to first proceed with the drainage stroke. ) Is opened and the second drain valve 112 is closed, and then the drain pump 103 is driven. Thereafter, when it is determined that the drainage stroke of the first washing tank 41 is completed based on the value detected by the sensing unit 122 including a water level sensor (not shown), the control unit 120 includes a first drain valve ( After closing 102 and opening the second drain valve 112, the drain pump 103 is driven to complete the drain stroke of the second washing tank 42.

In addition, when the first washing valve 102 is opened and the drain pump 103 is driven to drain the stroke of the first washing tank 41, the second washing tank 42 enters the draining stroke. ) Maintains the closed state of the second drain valve 112 until the drain stroke of the first washing tank 41 is completed.

Thereafter, when the drainage stroke of the first washing tank 41 is completed, the sensing unit 122 detects the control unit 120, and the control unit 120 closes the first drain valve 102 and closes the second drain valve 112. It opens and proceeds to the drainage of the 2nd washing tank 42. In this case, the drain pump 103 may be driven, and since the second washing tank 42 is mounted on the upper part of the first washing tank 41, the drainage of the second washing tank 42 is performed without driving the drain pump 103. Can be enabled.

Similarly, when the drainage cycle of the second washing tank 42 is in progress, when the first washing tank 41 enters the drainage stroke, the first washing tank 42 until the drainage stroke of the second washing tank 42 is completed to correspond to the above operation. The drain valve 102 is kept closed.

After that, when the drain stroke of the second washing tank 42 is completed, the control unit 120 closes the second drain valve 112 and opens the first drain valve 102 to perform the drain stroke of the first washing tank 41. Proceed.

As such, the control unit 120 selectively opens and closes the first and second drain valves 102 and 112 to sequentially proceed with the drainage strokes of the first and second washing tanks 41 and 42. Simultaneous drainage can be prevented.

In addition, it is possible to proceed with the drainage stroke of the first and second washing tanks 41 and 42 by using one drainage pump 103 to simplify the drainage structure and reduce manufacturing costs.

Meanwhile, in the first embodiment of the present invention, the first and second washing tanks are divided and installed as an example. However, the present invention is not limited thereto, and the first and second washing tanks may be installed left and right. Of course, the same purpose and effect can be achieved.

Next, another embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Compared to one embodiment, there is a difference in the main body, drainage, etc., but other configurations may be configured in the same manner as in one embodiment.

Hereinafter, the same components as in the exemplary embodiment will be denoted by the same reference numerals and description thereof will be omitted.

4 is a cross-sectional view showing the configuration of a washing machine according to another embodiment of the present invention.

In another embodiment, the main body 200 includes a first main body 210 accommodating the first washing tub 41 and an upper part of the first main body 210 to accommodate the second washing tub 42 therein. It may be made including a second body 220.

The user may install a washing machine provided with the first and second washing tanks 41 and 42 by stacking the second body 220 on the upper surface 213 of the first body 210.

That is, the first body 210 and the second body 220 may be sold as separate components at the time of sale, and when a plurality of washing tanks are required according to a user's needs, the first and second bodies 210 and 220 may be used at the same time. Purchasing separately will enable the second body 220 to be installed on the top surface 213 of the first body 210.

Another embodiment is provided in the first body 210, the first drainage device 300 for draining the water in the first washing tank 41, and the second body 220 is provided in the second washing tank 42 A second drainage device 310 for draining water, and a control unit 120 electrically connected to each of the drainage devices 300 and 310 to selectively drain the wash water of the first and second washing tanks 41 and 42 to the outside. 3).

The first drainage device 300 includes a first drainage pipe 301, one end of which is in communication with the first washing tank 41, and a first drainage valve 302 that opens and closes the first drainage pipe 301. The outlet side of the valve 302 may be provided with a drain pump 303 for forcibly flowing the wash water, and a drain guide tube 304 for guiding the wash water discharged by the drain pump 303 to the outside. .

In addition, the first drainage device 300 further includes a connection pipe 305 having one end communicating with the first drainage pipe 301 between the first drainage valve 302 and the drainage pump 303.

The second drainage device 310 has an end that communicates with the second washing tub 42 and the other end extends to the outside of the second body 220 and opens and closes the second drainage pipe 311. And a double drain valve 312. The second drain pipe 311 extends to the outside through the rear surface 225 of the second body 220.

The connection pipe 305 is for guiding the washing water flowing through the second drain pipe 311 of the second drainage device 310 to the first drainage device 300. It is connected to the connector 230 for coupling with the drain pipe 311, the connector 230 is fixed to the rear surface 215 of the first body (210).

In this configuration, as in the first embodiment, the first drainage device 300 and the second body 220 of the first body 210 may be selectively used to selectively perform the drainage administration of the first and second washing tanks 41 and 42. It is necessary to interconnect the second drainage device 310.

Raising the second body 220 on the upper surface 213 of the first body 210, by coupling the end of the second drain pipe 311 extending to the outside of the second body 220 to the connector 230, the first It is possible to interconnect the drainage device 300 and the second drainage device 310.

As described above, when the first body 210 and the second body 220 are stacked, the control unit 120 controls the first and second washing tanks 41 and 42 to be selectively drained as in the first embodiment. do.

When washing is performed in the first and second washing tanks 41 and 42, the control unit 120 controls the first and second drain valves 302 and 312 and the drain pump 303 in the same manner as in the first embodiment. The same operation can be performed by performing the same operation as in the embodiment.

Although not shown, the controller 120 is a microcomputer provided in the first body 210 and electrically controlled by the second drain valve 312 and the like for controlling the second drainage device 310 of the second body 220. Will be connected.

On the other hand, a separate control unit may be provided in the second body for controlling the second washing tank, water supply device, etc., and each configuration of the second body may be configured to control the second body using the control unit in the first body. It may be connected to the control unit within.

In addition, according to the installation space of the washing machine, instead of stacking the second main body on the upper surface of the first main body, the second drainage pipe of the second main body is placed next to each other on a flat or stepped ground or spaced a predetermined distance apart. Of course, it is also possible to connect to the connection pipe of the main body.

Next, another embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Differences in drainage and the like compared to one embodiment, but other configurations may be configured in the same manner as the embodiment.

Hereinafter, the same components as in the exemplary embodiment will be denoted by the same reference numerals and description thereof will be omitted.

5 is a cross-sectional view showing the configuration of a washing machine according to another embodiment of the present invention, Figure 6 is a main portion perspective view showing the main part of the washing machine according to another embodiment of the present invention, Figure 7, 8 is another embodiment of the present invention 4 is a view illustrating an operation of draining the washing machine according to another embodiment.

Another embodiment of the present invention is the first and second drainage device (400,410) for draining the water in the first and second washing tank (41, 42), and the mechanically connected to the drainage device (400,410) It may include a control device 500 for selectively draining the wash water of the 1,2 washing tanks (41, 42) to the outside.

The first drainage device 400 includes a first drain pipe 401, one end of which is in communication with the first washing tank 41, and a drain pump for forcibly flowing the wash water to the outlet side of the first drain valve 402. 403 and a drain guide tube 404 for guiding the wash water discharged by the drain pump 403 to the outside may be provided.

The drain guide tube 404 is located at a position higher than the maximum water level stored in the first washing tank 41 to prevent natural drainage of the water in the first washing tank 41. Is arranged to.

However, although not shown, when the first drainage device is provided with a drain valve for opening and closing the first drainage pipe, the height of the middle of the drainage guide pipe may be freely provided.

The second drainage device 410 has a second drainage pipe 411 whose one end is in communication with the second washing tank 42 and the other end thereof extends to the first drainage pipe 401, and a second drainage opening and closing the second drainage pipe 411. Valve 412.

The control device 500 is an opening and closing device 500 for selectively opening and closing the first and second drain pipes 401 and 411, and the opening and closing device 500 is connected to the first and second drain pipes 401 and 411 and the drain guide pipe 404. Although it may be formed integrally, in the present embodiment, the switchgear 500 is provided in a separate configuration for convenience of manufacturing.

The opening and closing device 500 is connected to the first drain pipe 401 as shown in Figures 6 to 8, the first opening 501, the second drain pipe 411 and the wash water flows into the first drain pipe 401 The second opening 502 is connected to the washing water of the second drain pipe 411 and the drain guide pipe 404 connected to the drainage pipe 404, the washing water flowing into any one of the first and second openings (501, 502) to the drain connection pipe It includes a third opening 503 for outflow, is provided in the form of a substantially T-shaped or Y-shaped connector.

The opening and closing member 510 rotatably provided by the flow of the wash water in the first and second drain pipes 401 and 411 and stoppers 521 and 522 for preventing the rotation of the opening and closing member 510 in the inner flow path of the opening and closing device 500. It can be made, including).

The opening and closing member 510 is hinged rotatably to one side of the inner flow path, and the stoppers 521 and 522 are opened and closed to selectively open and close the first and second openings 501 and 502 by the rotation angle of the opening and closing member 510 being approximately perpendicular. Support member 510.

The stoppers 521 and 522 may include a first stopper 521 supporting the opening and closing member 510 to prevent over-rotation when the opening and closing member 510 is rotated to a position to close the first opening 501, and the opening and closing member 521. When the 510 rotates to the position in which the second opening 502 is closed, the second stopper 522 supports the opening / closing member 510 to prevent over-rotation.

Accordingly, the opening and closing member 510 is rotated by the washing water flowing through the first and second openings 501 and 502 to selectively open and close the first and second openings 501 and 502.

Next will be described the operation of the drainage of the washing machine according to another embodiment of the present invention.

When the drain stroke is performed only in the first washing tank 41, the control unit 120 drives the drain pump 403 in a state in which the second drain valve 412 is closed. Thus, as shown in Figure 8, the washing water flow flowing through the first drain pipe 401 by the force of the drain pump 403 flows into the opening and closing device 500 through the first opening 501, the introduced washing water flow By rotating the opening and closing member 510 upwards, the opening and closing member 510 is positioned at a position to close the second opening 502 and open the third opening 503, thereby smoothly draining the first washing tank 41.

In addition, when the drainage stroke is performed in the second washing tank 42, the controller 120 opens the second drain valve 412 in a state in which the drain pump 403 is turned off. Accordingly, the washing water flowing through the second drain pipe 411 flows into the opening and closing device 500 through the second opening 502, and the introduced washing water rotates the opening and closing member 510 toward the first opening 501. As a result, the opening / closing member 510 is positioned at a position to close the first opening 501 and open the second opening 502, so that the second washing tank 42 can be drained smoothly.

In addition, the controller 120 simultaneously opens the second drain valve 412 and the drain pump 403 to simultaneously perform the drain stroke of the first and second washing tanks 41 and 42, or the first washing tank 41 of the first washing tank 41. In some cases, the second drain valve 412 and the drain pump 403 are sequentially opened in the second washing tank 42 to perform the drain stroke.

At this time, since the pressure by the drain pump 403 is greater than the water pressure in the second washing tank 42, the opening and closing member 510 closes the second opening 502 and opens the first opening 501 to open the first opening. The drainage of the washing tank 41 is first performed.

After the drainage of the first washing tank 41 is completed, the opening / closing member 510 closes the first opening 501 and opens the second opening 502 by the water pressure of the second washing tank 42. The second washing tank 42 is drained.

In addition, when the drainage of the first washing tank 41 is completed, the sensing unit 122 detects this, and the control unit 120 may turn off the drain pump 403 based on this and then drain the second washing tank 42. have.

As described above, when the first and second washing tanks 41 and 42 are simultaneously drained, the first washing tank 41 disposed in the lower part may be first drained, and then the second washing tank 42 disposed in the upper part may be drained. do.

Next will be described a modification of another embodiment.

9 is a sectional view showing the structure of a washing machine according to a modification of still another embodiment.

In the modified example, the first drain valve 403 is provided in the middle of the first drain pipe 401 and the drain pump can be removed, and the drain guide pipe 404 of the first washing tank 41 is compared with another embodiment. It may extend outward from a lower position than the lower surface.

When the drainage stroke is performed only in the first washing tank 41 in such a configuration, the controller 120 opens the first drain valve 403 in a state in which the second drain valve 412 is closed.

The washing water flow flowing through the first drain pipe 401 flows into the opening and closing device 500 through the first opening 501, and the introduced washing water flows by rotating the opening and closing member 510 upward. The two openings 502 are closed and the third openings 503 are positioned at a position where smooth drainage of the first washing tank 41 is achieved.

In addition, when the second washing tank 42 is drained, the control unit 120 turns off the first drain valve 403 and opens the second drain valve 412. Thus, the washing water flowing through the second drain pipe 411 flows into the opening and closing device 500 through the second opening 502, and the introduced washing water rotates the opening and closing member 510 toward the first opening 501. As a result, the opening / closing member 510 is positioned at a position to close the first opening 501 and open the second opening 502, so that the second washing tank 42 can be drained smoothly.

In addition, the controller 120 simultaneously opens the second drain valve 412 and the drain pump 403 to simultaneously perform the drain stroke of the first and second washing tanks 41 and 42, or the first washing tank 41 of the first washing tank 41. In some cases, the second drain valve 412 and the drain pump 403 are sequentially opened to perform the drain stroke in the second washing tank 42 during the drain stroke.

Since the second washing tank 42 is located above the first washing tank 41, the washing water of the second washing tank 42 has a relatively high water pressure compared to the first washing tank 41.

Therefore, since the washing water flowing through the second drain pipe 411 has a greater pressure than the washing water flowing through the first drain pipe 401, the opening / closing member 510 rotates in the direction of closing the first opening 501. Thus, only the wash water of the second washing tank 42 is drained. When the drainage of the second washing tank 42 is completed, the opening / closing member 510 rotates in the direction of closing the second opening 502 by the pressure of the washing water flow of the first washing tank 41, thereby The wash water is drained.

In addition, the control unit 120 opens the first drain valve 402 after opening the second drain valve 412 for the drain stroke of the first washing tank 41 during the drain stroke of the second washing tank 42. At this time, even if the detergent water flows through the first drain pipe 401 toward the opening and closing device 500, the pressure of the washing water flowing through the second drain pipe 411 is greater, so that the opening and closing member 510 has the first opening 501. To keep the state of being closed and the second opening 502 open. Subsequently, when the drainage of the second washing tank 42 is completed, the opening / closing member 510 rotates in the direction of opening the first opening 501 by the pressure of the washing water flow of the first washing tank 41 and thus the first and second washing tanks. This completes the draining of (41, 42).

By selectively draining the first and second washing tanks 41 and 42 using the opening / closing member 510 as described above, the first and second washing tanks may only be mechanically configured without a separate control unit for selective drainage of the first and second washing tanks. It is possible to enable selective drainage of two washing tanks.

1 is a perspective view showing the appearance of a washing machine according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing the configuration of a washing machine according to an embodiment of the present invention.

3 is a control driving diagram of a washing machine according to an embodiment of the present invention;

4 is a cross-sectional view showing the configuration of a washing machine according to another embodiment of the present invention.

5 is a cross-sectional view showing the configuration of a washing machine according to another embodiment of the present invention.

6 is a perspective view illustrating a main portion of a washing machine according to still another embodiment of the present invention.

7 and 8 are operation diagrams illustrating an operation of draining the washing machine according to another embodiment of the present invention.

9 is a perspective view showing the main portion of the washing machine according to a modification of another embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10 main body 41, 42 first and second washing tank

51,52: First and second drums 81,82: First and second water supply devices

100,110: first and second drainage device 101,111: first and second drainage pipe

102, 112: first and second drain valve 103: drain pump

120: control unit 122: detection unit

Claims (29)

With a plurality of washing tanks, A plurality of drainage devices for discharging the washing water of the plurality of washing tanks to the outside; And a control device connected to the plurality of drainage devices for selectively draining the wash water of the plurality of wash tubs. The method of claim 1, The plurality of washing tanks comprises a pair of first and second washing tanks, The drainage device includes a first drainage device connected to the first washing tank, and a second drainage device connected to the first washing tank and the first drainage device. 3. The method of claim 2, The first drainage device includes a first drainage pipe having one end communicating with the first washing tank and the other end extending outwards. The second drainage device includes a second drainage pipe having one end communicating with the second washing tank and the other end communicating with the first drainage pipe, and a drain valve for opening and closing the second drainage pipe. The method of claim 3, wherein The first drainage device further comprises a drain valve for opening and closing the first drainage pipe. The method of claim 3, wherein The first drainage device further comprises a drainage pump provided downstream of the confluence of the first drainage pipe with the second drainage pipe. The method of claim 3, wherein An end portion of the second drain pipe extends out of the main body, The first drainage device further comprises a connection pipe having one end communicating with the first drain pipe and the other end communicating with the second drain pipe. The method of claim 6, At least one of the connection pipe and the second drain pipe further comprises a connector to facilitate coupling of the second drain pipe and the connection pipe. The method of claim 4, wherein The control device is a washing machine, characterized in that the microcomputer to selectively open and close the first and second drain valve. The method of claim 8, The microcomputer is a washing machine, characterized in that for closing the second drain valve and opening the first drain valve when draining the first washing tank. The method of claim 8, The microcomputer is a washing machine, characterized in that for closing the first drain valve and opening the second drain valve when draining the second washing tank. 3. The method of claim 2, And the control device drains one of the first and second washing tanks, and then drains the other washing tank when a simultaneous draining command is input to the first and second washing tanks. The method of claim 3, wherein The control device is a washing machine, characterized in that the opening and closing device for selectively opening and closing the first and second drain pipe by the flow of the wash water in the first and second drain pipe. The method of claim 12, The opening and closing device is a washing machine, characterized in that it comprises an opening and closing member rotatably provided by the flow of the wash water in the first and second drain pipe. The method of claim 13, The opening and closing device further comprises a stopper for preventing over-rotation of the opening and closing member. 15. The method of claim 14, The stopper includes a first stopper for supporting the opening and closing member when the opening and closing member closes the first drain pipe, and a second stopper for supporting the opening and closing member when the opening and closing member closes the second drain pipe. Washing machine characterized in that. The method of claim 13, The first drainage device further comprises a drain pump provided in the middle of the first drain pipe, And the opening and closing member is rotated by the pump pressure of the drainage pump when the drainage pump is driven to open the first drainage pipe and close the second drainage pipe. The method of claim 16, The second washing tank is disposed above the first washing tank, And the opening / closing member is rotated by the washing water pressure on the side of the second washing tank when only the drain valve of the drain valve and the drain pump is driven to open the second drain pipe and close the first drain pipe. The method of claim 1, The plurality of washing tanks are washing machines, characterized in that the first and second washing tanks arranged up and down. The first laundry, A second washing tank disposed above the first washing tank, A first drain pipe for discharging the washing water of the first washing tank to the outside; A second drain pipe for discharging the washing water of the second washing tank to the outside; Washing machine comprising an opening and closing device for selectively opening and closing the first and second drain pipe. The method of claim 19, The opening and closing device is a washing machine, characterized in that for closing the second drain pipe when opening the first drain pipe, and closing the first drain pipe when opening the second drain pipe. The method of claim 19, The drain pump is provided in the middle of the first drain pipe, Washing machine, characterized in that the drain valve is provided in the middle of the second drain pipe. The method of claim 19, The opening and closing device is a washing machine, characterized in that the opening and closing member to move by the pressure of the wash water in the first and second drain pipe. 23. The method of claim 22, The opening and closing member is a washing machine, characterized in that rotatably coupled to the connection portion of the first and second drain pipe. The first laundry, A second washing tank disposed above the first washing tank, A first drain pipe for discharging the washing water of the first washing tank to the outside; A second drain pipe for discharging the washing water of the second washing tank to the outside; A pair of drain valves for opening and closing the first and second drain pipes, respectively; Washing machine comprising a control device for selectively opening and closing the pair of drain valve. The method of claim 24, A confluence unit for joining the wash water of the first and second drain pipes is provided, The washing machine, characterized in that the drain pump is provided downstream of the confluence. 26. The method of claim 25, And the control device closes the drain valve to open and close the second drain pipe and drives the drain pump when opening the drain valve to open and close the first drain pipe. 26. The method of claim 25, The control device is a washing machine, characterized in that for closing the drain valve for opening and closing the first drain pipe when opening the drain valve for opening and closing the second drain pipe. In the control method of the washing machine comprising a plurality of washing tanks and drainage for discharging the washing water of the plurality of washing tanks to the outside, It is determined whether the plurality of washing tanks is a drainage stroke, And controlling the drainage device so as to sequentially drain the washing water of the plurality of washing tanks when the plurality of washing tanks are drained at the same time. The method of claim 28, The plurality of washing tanks include first and second washing tanks, To drain the washing water of the plurality of washing tanks sequentially, The control method of the washing machine, characterized in that for draining any one of the first, second washing tank after draining the other.

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