KR20180048501A - Washing machine - Google Patents

Abstract

The present invention proposes a washing machine which is provided with a subsidiary door such that additional laundry can be safely inputted into the washing machine during operation. The present invention is provided with the subsidiary door such that additional laundry can be inputted. In order to provide an algorithm to safely operate the subsidiary door, a possibility of whether or not additional laundry can be inputted during operation of the washing machine is indicated such that a user is able to check the possibility. When the additional laundry is required to be inputted, rotation of a drum, and the temperature and a water level within the drum are checked to safely input the laundry. In addition, when the additional laundry is inputted while the washing machine is in a stroke process, a stroke profile is changed by each stroke, and the stroke profile is compensated in accordance with a time of addition such that reliability of the user with respect to the washing machine can be increased.

Description

Washing machine {WASHING MACHINE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine having an auxiliary door, and more particularly, to a washing machine capable of additionally loading laundry during operation of the washing machine.

2. Description of the Related Art Generally, a washing machine (e.g., a drum washing machine) includes a tub for containing water (washing water or rinse water), a drum rotatably installed in the tub for receiving laundry, The washing machine includes a motor for generating a washing water, and when the drum rotates, the laundry in the drum rises along the inner wall of the drum and then falls down to wash the contaminated laundry.

In such a washing machine, a loading port is formed so as to insert laundry into the drum or to take laundry out of the drum, and a door is provided to open and close the loading port. Therefore, the user can open the door to load or unload the laundry.

When the operation of the washing machine is started, the door maintains the locked state. Therefore, if the user intends to further input laundry, the door must be opened. In order to open the door during operation of the washing machine, it is necessary to wait until the washing cycle is completed or to drain all the water. In this way, it is not easy to add laundry more during operation of the washing machine.

In order to solve the above-mentioned problems, one aspect of the present invention is to provide a washing machine having an auxiliary door to which laundry can be additionally inserted, and which can safely operate the auxiliary door.

Another aspect of the present invention is to provide a washing machine capable of indicating whether the laundry can be added during the operation of the washing machine, and to check the rotation of the drum, the internal temperature and the water level when the laundry is to be added, do.

Another aspect of the present invention is to provide a washing machine capable of changing an administrative profile for each of the strokes when the laundry is additionally supplied during the execution of the washing machine, and compensating the stroke profile at an additional time.

To this end, the washing machine according to one aspect of the present invention includes a main body for forming an outer appearance and forming an inlet; A tub installed in the main body to receive water; A drum rotatably installed in the tub, the drum receiving laundry; A motor for providing power to the drum; A main door installed in the main body to open and close the loading port; A main locking device that operates so as to be in a state in which the main door can be opened or in a state to prevent opening of the main door; An auxiliary door which is installed in the main door and can be opened and closed separately from the main door; An auxiliary locking device which operates in a state in which the auxiliary door can be opened or in a state of preventing the opening of the auxiliary door; A water level sensor for detecting the water level of the water stored in the tub; And the main locking device is controlled so as to be in a state of preventing the opening of the main door so that the auxiliary locking device is controlled to be in a state of preventing the opening of the auxiliary door, And a controller for controlling operation of at least one of the main locking device and the auxiliary locking device such that at least one of the main locking device and the auxiliary locking device is in a state in which the at least one auxiliary locking device can be opened when the detection level is lower than a preset reference level. And the reference water level is lower than the installation position of the auxiliary door.

According to the proposed washing machine, an auxiliary door is provided for additionally loading laundry, and an algorithm for safely operating the auxiliary door is provided. In order to accomplish this, the user can check whether the laundry can be additionally inserted during the operation of the washing machine. If the laundry is to be additionally inserted, the rotation of the drum, the internal temperature and the water level are checked, do.

In addition, when the laundry is additionally supplied during the execution of the washing machine, the administrative profile is changed for each administration, and the user's trust in the washing machine can be increased by compensating the administrative profile at the additional time.

FIG. 1 is a perspective view showing the appearance of a washing machine according to an embodiment of the present invention.
2 is a perspective view showing a state in which a main door of a washing machine according to an embodiment of the present invention is opened.
3 is a perspective view showing a state in which the auxiliary door of the washing machine is opened according to an embodiment of the present invention.
4 is a cross-sectional view illustrating the construction of a washing machine according to an embodiment of the present invention.
5 is a block diagram of a control system of a washing machine according to an embodiment of the present invention.
6A and 6B are flowcharts illustrating a first control algorithm for operation of the auxiliary door in the washing machine according to the embodiment of the present invention.
7A and 7B are flowcharts illustrating a second control algorithm for operation of the auxiliary door in the washing machine according to the embodiment of the present invention.
8A and 8B are flowcharts illustrating a control algorithm for operation of a main door and an auxiliary door in a washing machine according to an embodiment of the present invention.
FIG. 9 is an operation flowchart showing a control algorithm of a washing stroke profile in a washing machine according to an embodiment of the present invention.
10 is an operation flowchart showing a control algorithm of the rinsing stroke profile in the washing machine according to the embodiment of the present invention.
11 is an operation flowchart showing a first control algorithm of a dehydration stroke profile in a washing machine according to an embodiment of the present invention.
12 is an operational flowchart showing a second control algorithm of a dehydration stroke profile in a washing machine according to an embodiment of the present invention.

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

2 is a perspective view illustrating a state in which a main door of a washing machine according to an exemplary embodiment of the present invention is opened, and FIG. 3 is a perspective view of a washing machine according to an embodiment of the present invention. FIG. 4 is a cross-sectional view illustrating a configuration of a washing machine according to an embodiment of the present invention. FIG. 4 is a perspective view of a washing machine according to an embodiment of the present invention.

1 to 4, the washing machine 1 includes a main body 10 having a substantially box shape and forming an outer appearance, a tub 20 for receiving water (washing water or rinse water) to be used for a washing or rinsing stroke, And a motor (7) for rotating the drum (30).

A control panel 80 on which various buttons and a display for controlling the washing machine 1 are disposed is provided on the front surface of the main body 10 and a control panel 80 is provided on the control panel 80 for controlling the operation of the washing machine 1 Input units 81a and 81b for receiving commands, and a display unit 83 for displaying an operation state of the washing machine 1 and an operation state of the user.

The input units 81a and 81b receive commands from the user relating to the operation of the washing machine 1 such as the washing course, the number of times of rinsing, the dewatering time, the drying time, the operation and the pause, and the pressing button 81a or the rotary button 81b, Can be adopted.

The display unit 83 displays information related to the operation of the washing machine 1 such as the amount of washing water, the stroke during which the washing machine 1 is being operated, the time remaining until the washing is finished, and displays information on a liquid crystal display (LCD) A light emitting diode (LED) panel or the like can be adopted.

The washing machine 1 according to the embodiment of the present invention is provided with the input units 81a and 81b and the display unit 83 separately. However, the present invention is not limited thereto, and the touch screen panel (TSP) It is needless to say that the input units 81a and 81b and the display unit 83 can be integrally formed.

The main body 10 includes frames 10a, 10b, 10c and 10d and the frames 10a, 10b, 10c and 10d respectively have a top frame 10a constituting the upper face of the main body 10, A side frame (not shown) that connects the front and rear frames 10b and 10c and forms the side surface and the bottom surface of the main body 10, and a front frame 10b and a rear frame 10c, And a frame 10d.

In the front frame 10b of the main body 10, a charging port 2a is formed so that laundry can be charged into the drum 30. The charging port 2a is opened and closed by a main door 70 provided in a front frame 10b of the main body 10. [

The diaphragm 90 can connect the main body 10 and the tub 20. The diaphragm 90 is disposed between the inlet 2a of the front frame 10a and the opening 21 of the tub 20 and extends from the inlet 2a of the front frame 10a to the opening 21 of the tub 20, And the vibration transmitted to the front frame 10a during the rotation of the drum 30 can be reduced. A portion of the diaphragm 90 is disposed between the main door 70 and the front frame 10a to prevent the water in the tub 20 from leaking to the outside of the main body 10. [

The diaphragm 90 may be formed of an injection molded from a thermoplastic elastomer. Since the thermoplastic elastomer has elasticity like rubber at room temperature, the diaphragm formed of the thermoplastic elastomer can effectively damp vibrations transmitted from the tub 20 to the front frame 10a of the main body 10. [

Between the tub 20 and the main body 10, a spring 17 for supporting the tub 20 from above may be provided. The spring 17 serves to mitigate vibrations and noise caused by the flow of the tub 20 due to the elastic force.

A water supply device 13 for supplying water to the tub 20 and a detergent supply device 40 for supplying the detergent and the softener to the inside of the tub 20 are installed in the upper part of the tub 20.

The water supply device 13 includes a water supply pipe 14 connecting between an external water supply pipe and a detergent supply device 40 for supplying water (wash water or rinse water) into the tub 20, And a water supply valve (15) for controlling the supply of hot water or cold water.

The detergent supply device 40 is connected to the tub 20 through a connection pipe 16 connected to the lower part thereof. The detergent and the softening agent in the detergent supply device 40 are supplied to the inside of the tub 20 together with water by the water supply device 13 connected to the tub 20 via the detergent supply device 40. This configuration allows the water supplied to the inside of the tub 20 to be supplied to the tub 20 together with the water via the detergent supply device 40.

The tub 20 is supported by a damper 41. The damper 41 connects the inner bottom surface of the main body 10 and the outer surface of the tub 20. Further, the damper 41 may be positioned on the upper side, left side, and right side of the inner bottom surface of the main body 10 to support the tub 20. The damper 41 or the spring 17 can mitigate vibrations and shocks generated from the upward and downward flows of the tub 20 in the upper and lower portions of the tub 20. [

The tub 20 can be supported by at least one damper 41.

Around the drum 30, a plurality of through holes 27 are formed for circulation of water (washing water or rinsing water). A plurality of lifters 26 are installed on the inner circumferential surface of the drum 30 to allow the laundry to rise and fall when the drum 30 rotates.

On the rear surface of the tub 20, a motor 7 for generating a driving force for rotating the drum 30 is provided. Generally, the motor 7 uses a universal motor composed of a field coil and an armature, a BLDC motor (Brushless Direct Motor) composed of a permanent magnet and an electric magnet, Any motor may be used as long as it is applicable to the motor 30. In addition, the motor 7 may be constituted by a belt type.

Between the drum 30 and the motor 7, a drive shaft 11 for transmitting the driving force of the motor 7 is provided. One end of the drive shaft 11 is connected to the rear plate of the drum 30 and the other end of the drive shaft 11 extends to the outside of the rear wall of the tub 20. When the motor 7 drives the drive shaft 11, the drum 30 connected to the drive shaft 11 rotates about the drive shaft 11.

On the rear wall of the tub 20, a bearing housing 8 is installed to rotatably support the drive shaft 11. The bearing housing 8 may be made of aluminum alloy and may be inserted into the rear wall of the tub 20 when the tub 20 is injection molded. Bearings 9 are provided between the bearing housing 8 and the drive shaft 11 so that the drive shaft 11 can rotate smoothly.

A drainage device 3 for discharging the water inside the tub 20 to the outside of the main body 10 may be provided in the lower part of the tub 20. The drainage device 3 may be constituted of a drainage pipe 4 for guiding the water of the tub 20 to the outside of the main body 10 and a drainage pump 5 for pumping water of the tub 20. In the embodiment of the present invention, the drain pump 5 is provided for discharging water. However, the present invention is not limited to this, and a drain motor and a drain valve may be provided.

The washing machine 1 according to an embodiment of the present invention may further include an auxiliary door 60 coupled to the main door 70 so as to further input laundry without opening the main door 70. One side of the auxiliary door (60) can be hinged to the main door (70).

The main door 70 and the auxiliary door 60 can be opened and closed independently of each other. That is, as shown in Fig. 2, only the main door 70 can be opened, and only the auxiliary door 60 can be opened as shown in Fig.

The main door 70 is rotatable in the left-right direction, and the auxiliary door 60 is rotatable in the up-and-down direction. That is, the rotation axis of the main door 70 and the rotation axis of the auxiliary door 60 may be orthogonal to each other.

Alternatively, the main door 70 and the auxiliary door 60 may be rotated in the same direction. That is, the rotation axis of the main door 70 and the rotation axis of the auxiliary door 60 may be parallel to each other. Further, the rotation axis of the main door 70 and the rotation axis of the auxiliary door 60 may be provided on the same line.

The auxiliary door (60) is provided approximately at the upper portion of the main door (70). That is, when the auxiliary door 60 is opened or closed during the operation of the washing machine 1, the auxiliary door 60 is closed to prevent the water (washing water or rinse water) present in the tub 20 from overflowing, Of the water stored in the water tank.

In addition, when the left or right side of the auxiliary door 60 is hinged to the main door 70, the auxiliary door 60 can be opened / closed laterally. When the upper or lower side of the auxiliary door 60 is hinged to the main door 70, the auxiliary door 60 is openable and closable up and down. The lower side of the auxiliary door 60 may be hinged to the main door 70 so that the auxiliary door 60 can be opened and closed downward.

A locking portion 71 may be formed on the other side of the main door 70.

The locking portion 71 of the main door 70 can be detachably attached to the main locking device 72 formed on the front frame 10b of the main body 10. [ That is, when the locking portion 71 of the main door 70 is inserted into the main locking device 72 of the front frame 10b, the main door 70 is maintained in the closed state, When the portion 71 is detached from the main locking device 72 of the front frame 10b, the main door 70 remains open.

A locking portion 61 may be formed on the other side of the auxiliary door 60.

The locking portion 61 of the auxiliary door 60 may be removably inserted into the auxiliary locking device 62 formed in the main door 70. [ That is, when the locking portion 61 of the auxiliary door 60 is inserted into the auxiliary locking device 62 of the main door 70, the auxiliary door 60 is maintained in the closed state and the locking of the auxiliary door 60 When the portion 61 is detached from the auxiliary locking device 62 of the main door 70, the auxiliary door 60 remains open.

One side of the auxiliary door 60 hinged to the main door 70 may face the other side of the auxiliary door 60 where the locking portion 61 is formed. That is, when the left side of the auxiliary door 60 is hinged to the main door 70, the locking portion 61 can be formed on the right side of the auxiliary door 60. When the right side of the auxiliary door 60 is hinged to the main door 70, the locking portion 61 may be formed on the left side of the auxiliary door 60. When the upper side of the auxiliary door 60 is hinged to the main door 70, the locking portion 61 may be formed on the lower side of the auxiliary door 60. When the lower side of the auxiliary door 60 is hinged to the main door 70, the locking portion 61 may be formed on the upper side of the auxiliary door 60.

The auxiliary door 60 maintains the locking state during operation of the washing machine 1 and the drum 30 stops rotating when the locking state of the auxiliary door 60 is released.

Whether or not the auxiliary door 60 is locked, that is, whether the auxiliary door 60 is opened or closed, can be judged by a sensor (not shown). In one embodiment, whether or not the auxiliary door 60 is opened or closed may be determined by an optical sensor (not shown). The light sensor includes a light emitting unit (not shown) for emitting light in accordance with movement of the auxiliary door 60 and a light receiving unit (not shown) for receiving light emitted from the light emitting unit and outputting a signal of a size corresponding to the received light amount Not shown). The control unit 110 (see FIG. 5) analyzes the signal output from the light receiving unit to determine whether the auxiliary door 60 is opened or closed, and controls the rotation of the drum 30 according to the determination result.

It is needless to say that the method of determining whether the auxiliary door 60 is open or closed is not limited to the above example, and may be variously modified.

The washing machine 1 according to an embodiment of the present invention may further include a water level sensor 102 for detecting a frequency varying with a water level in order to detect the amount of water (water level) in the tub 20, And a temperature sensor 104 for detecting the temperature inside the drum 20 is installed at a predetermined position inside the drum 20. The temperature sensor 104 is provided at a predetermined position inside the drum 20,

5 is a block diagram of a control system of a washing machine according to an embodiment of the present invention.

5, a washing machine 1 according to an embodiment of the present invention includes input units 81a and 81b, a display unit 83, a detection unit 100, a control unit 110, a memory 120, a driving unit 130, And an audio output unit 140.

The input units 81a and 81b input a command for performing a washing process, a rinsing process, a dewatering process, and the like of the washing machine 1 by a user's operation, and may be constituted by keys, buttons, switches, , And all devices that generate predetermined input data by operations such as pressing, touching, pressure, and rotation.

The input units 81a and 81b are provided on the control panel 80 and include a plurality of buttons for inputting user commands related to the operation of the washing machine 1 (power source, reservation, washing water temperature, calling, washing, rinsing, , Selected water level, etc.). Among the plurality of buttons, there is provided a course selection button for selecting a washing course (a standard course, a wool course, a boiling course, a drying course, etc. for a plurality of laundry courses) according to the type of laundry to be introduced into the washing machine 1.

In addition, the input units 81a and 81b are provided with a laundry addition button 82 for additionally loading laundry during the operation of the washing machine 1.

The laundry addition button 82 is a button provided for opening and closing the auxiliary door 60 during the operation of the washing machine 1 so as to further add laundry.

The user can operate the laundry addition button 82 to further input the laundry during the operation of the washing machine 1, that is, during the washing, rinsing or dewatering operations.

The display unit 83 displays the operation state of the washing machine 1 according to the display control signal of the controller 110 and recognizes the operation information input through the input units 81a and 81b to allow the laundry to be additionally loaded .

In addition, the display unit 83 indicates whether the laundry can be additionally loaded during the operation of the washing machine 1 according to an operation signal of the laundry addition button 82. [ First, in the case of a course (for example, a standard course, a delicate course, a wool course, etc.) in which laundry can be additionally loaded, it is displayed through text on the display unit 83 that the laundry can be additionally loaded, ) So that the user can easily confirm that the laundry can be additionally loaded.

On the other hand, in the case where the laundry can not be additionally loaded (for example, a boiling course, a drying course, etc.), an icon is displayed on the display unit 83 through the display unit 83 or a display unit 83 is blinked So that the user can easily confirm that the laundry can not be further input.

As described above, in the case of the LCD UI capable of displaying an icon or text, the display unit 83 displays an operation state of the washing machine 1 (for example, whether or not the laundry can be additionally loaded or impossible) So that the user can take appropriate action.

In addition, the display unit 83 displays the operating state of the washing machine 1 (for example, whether the laundry can be additionally loaded or not) using the lighting or blinking, So that the user can recognize the abnormal state of the washing machine 1.

The detection unit 100 detects various sensors installed in the washing machine 1 to detect the temperature inside the drum 30, the rotation of the drum 30, and the water level in the tub 20 for safe operation of the auxiliary door 60. [ A water level sensor 102 installed inside the tub 20 for detecting the amount of water (water level) in the tub 20 and a water level sensor 102 provided inside the drum 20 for detecting the air temperature inside the drum 20 A temperature sensor 104 for detecting the internal temperature of the drum and a current sensor 106 for detecting the rotation of the drum 30 by measuring the current flowing through the motor 7. [

In the embodiment of the present invention, the current flowing through the motor 7 is measured to detect whether the drum 30 is rotating. However, the present invention is not limited to this, It is needless to say that the same object and effect as the present invention can be achieved by detecting whether the drum 30 is rotating or not.

The control unit 110 is a microcomputer for controlling the overall operation of the washing machine 1 such as a washing cycle, a rinsing cycle and a dewatering cycle in accordance with the operation information input from the input units 81a and 81b. (Target rinsing water level), the target RPM and the motor operation rate (washing motor on-off time), the washing time, and the number of times of rinsing are set in accordance with the number of rinses.

In addition, the control unit 110 provides an algorithm that can safely operate the auxiliary door 60, which is capable of additionally loading laundry in accordance with the operation of the laundry addition button 82.

This will be described in more detail as follows.

When the user operates the laundry addition button 82, the control unit 110 determines whether the laundry can be additionally loaded (normal course, delicate course, wool course, etc.) during operation of the washing machine 1, ).

First, in the case of a course (standard course, delicate course, wool course, etc.) in which laundry can be additionally charged, the display unit 83 is turned on or text is displayed through the display unit 83, So that it is possible to confirm that it is possible.

On the other hand, in the case of a course (boiled course, drying course, etc.) in which the laundry can not be added, the display unit 83 is flickered or the text is displayed through the display unit 83, .

Accordingly, the user confirms whether or not the laundry can be additionally loaded through the display unit 83, and further loads the laundry.

Next, the controller 110 checks whether the drum 30 is rotated, the internal temperature of the drum 30, and the water level of the water contained in the tub 20 when the laundry can be additionally loaded, thereby operating the auxiliary door 60 So that the laundry can be supplied more safely.

That is, the control unit 110 controls the temperature of the drum 30 to be lower than the set temperature (a proper temperature at which the risk of a safety accident can be prevented, about 70 ° C.) When the water level of the tub 20 is lower than the predetermined water level (the overflow water level at which the water in the tub can flow to the outside), the auxiliary door 60 is unlocked so that the auxiliary door 60 To be opened.

In addition, when the laundry is further added, the control unit 110 changes the administrative profile for each of the washing, rinsing, and dehydrating operations, and compensates the administrative profile at the additional time.

This will be described in more detail as follows.

First, when the laundry is further added during the washing cycle, the washing time is adjusted according to the elapsed time at the time of adding the laundry. For example, when the laundry is added at a point of time when the laundry is started and the washing time is within a predetermined time (about 10 minutes), the subsequent washing cycle is continued without changing the set washing time. On the other hand, when the laundry is added at a point of time when the laundry is started and a certain period of time (about 10 minutes) has elapsed, a predetermined time is compensated at the set time for washing. At this time, the compensation time is not exceeded for a predetermined time (about 10 minutes), and the inconvenience that the user may feel due to the longer washing time is reduced.

Meanwhile, in the embodiment of the present invention, the washing time is extended when the laundry is further added during the washing cycle. However, the present invention is not limited to this, So that washing performance can be compensated by the addition of laundry. It is also possible to adjust the washing time and the washing RPM so as to compensate for the washing performance due to the additional laundry.

In addition, when the laundry is additionally supplied during the washing cycle, detergent may be supplied through the detergent supply device 40.

Next, when the laundry is further added during the rinsing cycle, the number of times of rinsing is controlled or the rinsing time is adjusted according to the number of times of rinsing at the time of adding the laundry. For example, when the number of times of rinsing at the time of adding laundry is one time, the number of times of rinsing is not changed but the subsequent rinsing step is continued as it is. On the other hand, when the number of times of rinsing at the time of adding laundry is two or more rinses, the number of times of rinsing may be increased by compensating the number of times of rinsing once in the set number of times of rinsing, or may be compensated for a predetermined time in the last time of rinsing, Go ahead.

In addition, when the laundry is further added during the rinsing cycle, the number of times of rinsing is adjusted or the rinsing time is adjusted according to the number of times of the remaining rinsing at the time of adding the laundry. For example, when the number of times of the remaining rinsing at the time of adding laundry is one, the number of times of rinsing may be increased by compensating the number of times of rinsing once in the set number of times of rinsing, or may be compensated for a predetermined time in the last time of rinsing, . On the other hand, when the number of times of the remaining rinsing at the time of adding laundry is not one (for example, two times), the subsequent rinsing cycle is continued without changing the set rinsing frequency, or the rinsing time of the last rinsing And the rinse cycle is continued without compensation.

Meanwhile, in the embodiment of the present invention, the number of rinsing times and the rinsing time are extended when the laundry is further added during the rinsing cycle. However, the present invention is not limited to this and the number of times of rinsing, The rinsing performance can be compensated by adjusting the rinsing RPM without extending the laundry. The rinsing performance and rinsing performance can be compensated by controlling the rinsing frequency and the rinsing RPM. The rinsing performance and the rinsing performance can be compensated by adjusting the rinsing cycle time and the rinsing RPM Of course.

Next, when the laundry is further added during the dehydration process, the dehydration process is continued without changing the dehydration time or dehydration RPM.

On the other hand, in the embodiment of the present invention, when the laundry is additionally supplied during the dewatering stroke, the dewatering stroke is continued without changing the dewatering stroke profile. However, the present invention is not limited to this, If the RPM or the maximum RPM is checked, additional input of laundry may not be possible through sound output or visual indication.

The memory 120 stores control data for controlling the operation of the washing machine 1, reference data used during operation control of the washing machine 1, operation data generated while the washing machine 1 performs a predetermined operation, Setting information such as setting data and the like inputted by the input units 81a and 81b so that the washing machine 1 performs a predetermined operation and the usage information including the number of times the washing machine 1 performs a specific operation, Failure information including the cause of the malfunction or the malfunction position at the time of malfunction of the washing machine 1 can be stored.

The memory 120 stores the control value of the internal temperature of the drum 30 and the control value of the water level of the tub 20 according to the additional input conditions of the laundry determined by the control unit 110, A control program for control, a dedicated application first provided by a manufacturer, or a general purpose application downloaded from the outside.

In addition, the memory 120 may include a non-volatile memory device such as a ROM, a PROM, an EPRM, and a flash memory, a random access memory Volatile memory such as a random access memory (RAM), or a storage device such as a hard disk or an optical disk. However, the memory 140 is not limited thereto, and various storage devices that a designer may consider are used.

The driving unit 130 drives the drain pump 5, the motor 7, the water supply valve 15, the detergent supply unit 40, etc. related to the operation of the washing machine 1 according to the drive control signal of the controller 110 .

The sound output unit 140 outputs the operation state of the washing machine 1 and the operation state of the user as sound (for example, Beep sound) according to the sound control signal of the control unit 110. [

Hereinafter, the operation and effect of the washing machine provided with the auxiliary door 60 according to the embodiment of the present invention will be described.

6A and 6B are flowcharts illustrating a first control algorithm for operation of the auxiliary door in the washing machine according to the embodiment of the present invention.

6A and 6B illustrate an algorithm for safely operating the auxiliary door 60 provided separately from the main door 70. When the laundry is to be further inserted during operation of the washing machine 1, A description will be given of a method for operating the auxiliary door 60 safely.

6A and 6B, after the user opens the main door 70 or the auxiliary door 60 and puts the laundry into the drum 30 through the inlet 2a, the main door 70 or the auxiliary door 60 ), And a laundry course (a standard course, a wool course, a delicate course, a boiled course, etc. for a plurality of laundry courses) and a stroke are selected (200). At this time, the operation information selected by the user is input to the control unit 110 through the input units 81a and 81b.

In addition, the user can operate the input units 81a and 81b to select a drying course including a drying stroke according to the type of laundry. In this case, it is designed to carry out the drying process after completion of dewatering in connection with the washing stroke.

The control unit 110 drives a locking device (not shown) to lock the main door 70 and the auxiliary door 60 (step 202).

When the main door 70 and the auxiliary door 60 are locked, the control unit 110 determines whether the selected laundry course is a course (standard course, delicate course, wool course, etc.) in which laundry can be additionally inserted.

As a result of the determination in step 204, if the laundry is not allowed to be additionally loaded (such as a cooking course or a drying course), the control unit 110 may perform a series of strokes of the washing machine 1 in accordance with the operation information input from the input units 81a and 81b (206). At this time, the display unit 83 is turned off.

While the display unit 83 is turned off, the controller 110 determines whether the laundry addition button 82 has been operated (step 208) while the washing machine 1 is running. This is to judge whether the user has pressed the laundry addition button 82 on the course in which the laundry can not be added further.

When the laundry addition button 82 is operated while the display unit 83 is turned off, the control unit 110 outputs sound (for example, a Beep sound) through the sound output unit 140, It is not possible to enter the course. At the same time, the display unit 83 is blinked so that the user can easily confirm that the laundry is not a course to which the laundry can not be added.

On the other hand, if it is determined in step 204 that the laundry can be additionally loaded, the control unit 110 displays an icon indicating that the laundry can be additionally loaded by lighting the display unit 83 (220). Therefore, the user can confirm that the laundry can be additionally loaded.

Then, the control unit 110 starts to proceed a series of strokes of the washing machine 1 according to the operation information input from the input units 81a and 81b (222).

While the display unit 83 is turned on, the controller 110 determines whether the laundry addition button 82 has been operated during the stroke of the washing machine 1 (224). This is to judge whether the user has pressed the laundry addition button 82 on the course where the laundry can be additionally inserted.

If it is determined in step 224 that the laundry addition button 82 is operated, the controller 110 controls the operation of the drum 30 to determine whether it is safe to open the auxiliary door 60 before releasing the locking of the auxiliary door 60 An operation algorithm for confirming the internal temperature and the rotation of the drum 30 is performed.

The control unit 110 first detects the internal temperature T of the drum 30 through the temperature sensor 104 and determines whether the detected drum internal temperature T is lower than the set temperature Ts (A proper temperature at which the risk can be prevented, about 70 DEG C) (228). This is for the purpose of eliminating the risk of a safety accident such as burning by the high temperature air inside the drum 30 when the laundry is additionally supplied through the auxiliary door 60.

If it is determined in step 228 that the drum internal temperature T is not lower than the set temperature Ts, the control unit 110 determines that the operation condition is that the temperature inside the drum 30 is high and the auxiliary door 60 can not be opened The process proceeds to step 210 to output sound through the sound output unit 140 and blink the display unit 83 to notify that the laundry can not be further inserted.

If it is determined in step 228 that the drum internal temperature T is lower than the set temperature Ts, the control unit 110 stops the rotation operation of the drum 30 through the driving unit 130, It is determined whether the drum 30 is stopped through the sensor 106 (232). This is for the purpose of eliminating the risk of a safety accident such as being hurt by the rotation of the drum 30 when the laundry is additionally supplied through the auxiliary door 60.

If it is determined in step 232 that the drum 3 does not stop, the control unit 110 determines that the auxiliary door 60 can not be opened, and proceeds to step 210 to output sound through the sound output unit 140 And the display unit 83 is blinked to indicate that the laundry can not be further charged.

On the other hand, if it is determined in step 232 that the drum 3 is stopped, the controller 110 cancels the locking of the auxiliary door 60 (step 234).

When the locking of the auxiliary door 60 is released, the user further loads the laundry through the auxiliary door 60 and then the auxiliary door 60 is closed to lock the auxiliary door 60 again (238) .

When the auxiliary door 60 is again locked, the control unit 110 continues the subsequent washing machine 1 (specifically, washing, rinsing, and dewatering) (240).

Then, the control unit 110 determines whether or not the laundry has been completed (step 242). If not, the process returns to step 224 to determine whether the laundry addition button 82 has been operated.

The control unit 110 cancels the locking of the main door 70 and the auxiliary door 60 so that the laundry can be taken out through the inlet 2a 244, .

On the other hand, if it is determined in step 208 and step 224 that the laundry addition button 82 is not operated, the control unit 110 proceeds to step 240 to execute the following washing machine 1 (specifically, washing cycle, rinsing cycle, Administration).

6A and 6B, an algorithm for checking whether the auxiliary door 60 is open or closed is checked by checking the internal temperature of the drum 30 and the rotation of the drum 30. However, The present invention is not limited to this and it is also possible to check the inner temperature of the drum 30 and the rotation of the drum 30 as well as to check the water level of the tub 20 to check the operating condition for safer opening of the auxiliary door 60 Algorithm can also be implemented. This will be described with reference to Figs. 7A and 7B.

7A and 7B are operation flowcharts illustrating a second control algorithm for operation of the auxiliary door in the washing machine according to an embodiment of the present invention, wherein the same parts as in FIGS. 6A and 6B are designated by the same names and the same reference numerals So that redundant explanations are omitted as much as possible.

7A and 7B, the user opens the main door 70 or the auxiliary door 60 to put the laundry into the drum 30, and then closes the main door 70 or the auxiliary door 60, The administration is selected (300).

When the operation button is pressed after selecting the washing course and the stroke, the control unit 110 locks the main door 70 and the auxiliary door 60 (302).

When the main door 70 and the auxiliary door 60 are locked, the control unit 110 determines 304 whether the selected laundry course is a course (standard course, delicate course, wool course, etc.)

As a result of the determination in step 304, if the laundry is not allowed to be additionally loaded (such as a cooking course or a drying course), the controller 110 proceeds to start a series of strokes of the washing machine 1 without turning on the display unit 83 (306).

While the display unit 83 is turned off, the controller 110 determines whether the laundry addition button 82 has been operated (step 308) while the washing machine 1 is running.

When the laundry addition button 82 is operated while the display unit 83 is turned off, the control unit 110 outputs sound through the sound output unit 140 and blinks the display unit 83, (310).

On the other hand, if it is determined in step 304 that the laundry can be additionally loaded (normal course, delicate course, wool course, etc.), the control unit 110 displays an icon (320).

Then, the control unit 110 starts to progress a series of strokes of the washing machine 1 according to the input operation information (322).

While the display unit 83 is turned on, the controller 110 determines whether the laundry addition button 82 has been operated (step 324) while the washing machine 1 is running.

If it is determined in step 324 that the laundry addition button 82 is operated, the controller 110 controls the operation of the drum 30 to determine whether it is safe to open the auxiliary door 60 before releasing the locking of the auxiliary door 60 An operation algorithm for checking the internal temperature, the rotation of the drum 30, and the water level of the tub 20 is performed.

The control unit 110 first detects 326 the internal temperature T of the drum 30 and determines 328 whether the detected drum internal temperature T is lower than the set temperature Ts. This is for the purpose of eliminating the risk of a safety accident such as burning by the high temperature air inside the drum 30 when the laundry is additionally supplied through the auxiliary door 60.

If it is determined in step 328 that the drum internal temperature T is not lower than the set temperature Ts, the controller 110 determines that the auxiliary door 60 can not be opened, 140 and flashes the display unit 83 to notify that the laundry can not be further inserted.

If it is determined in step 328 that the drum internal temperature T is lower than the preset temperature Ts, the control unit 110 stops the rotating operation of the drum 30 (330) (332). This is for the purpose of eliminating the risk of a safety accident such as being hurt by the rotation of the drum 30 when the laundry is additionally supplied through the auxiliary door 60.

If it is determined in step 332 that the drum 3 does not stop, the control unit 110 determines that the auxiliary door 60 can not be opened, and proceeds to step 310 to output sound through the sound output unit 140 And the display unit 83 is blinked to indicate that the laundry can not be further charged.

When the drum 3 is stopped in step 332, the controller 110 detects the level of the inside of the tub 20 through the level sensor 102 (334), and detects the level of the detected tub 20 (336). This is to prevent the water in the tub 20 from overflowing to the outside through the auxiliary door 60 when the auxiliary door 60 is opened. Generally, since the set water level is located below the auxiliary door 60, there is almost no overflow even if the water level of the tub 20 is not detected.

If it is determined in step 334 that the water level of the tub 20 is not lower than the set water level, the control unit 110 determines that the auxiliary door 60 can not be opened, and proceeds to step 310 to output the sound output unit 140 And the display unit 83 blinks to indicate that the laundry can not be further charged.

The present invention is not limited to this, but may be applied to a case where the tub 20 is drained through drainage operation, The auxiliary door 60 may be opened so that the laundry can be additionally introduced.

On the other hand, if it is determined in step 336 that the water level of the tub 20 is lower than the predetermined water level, the controller 110 determines that the auxiliary door 60 is openable and releases the locking of the auxiliary door 60 (338).

When the locking of the auxiliary door 60 is released, the user additionally loads the laundry through the auxiliary door 60 (340), and then the auxiliary door 60 is closed to lock the auxiliary door 60 again (342) .

When the auxiliary door 60 is again locked, the control unit 110 continues to proceed to the subsequent washing machine 1 (specifically, washing, rinsing, and dewatering) (344).

Then, the control unit 110 determines whether or not the washing machine 1 has been completed (step 346). If the washing machine 1 is not completed, the control unit 110 feeds back to the step 324 to determine whether the laundry adding button 82 has been operated.

The controller 110 cancels the locking of the main door 70 and the auxiliary door 60 so that the laundry can be taken out through the inlet 2a of the washing machine 1 (step 348) .

On the other hand, if it is determined in step 308 and step 324 that the laundry addition button 82 is not operated, the control unit 110 proceeds to step 344 to perform the following washing process (specifically, washing process, rinsing process, Administration).

6A and 6B and FIGS. 7A and 7B, the laundry is additionally introduced using the auxiliary door 60. However, the present invention is not limited to this, So that the laundry can be further added. This will be described with reference to Figs. 8A and 8B.

8A and 8B are flowcharts showing a control algorithm for operation of a main door and an auxiliary door in a washing machine according to an embodiment of the present invention. In FIGS. 8A and 8B, And duplicate descriptions will be omitted as much as possible.

8A and 8B relate to an algorithm for safely operating the main door 70 and the auxiliary door 60. When the laundry is to be further inserted during the operation of the washing machine 1, A method for safely operating the main door 70 and the auxiliary door 60 will be described.

8A and 8B, the user opens the main door 70 or the auxiliary door 60 to insert the laundry into the drum 30, and then closes the main door 70 or the auxiliary door 60. [ The operation information related to the washing course and the operation of the washing machine 1 is inputted by operating the input units 81a and 81b and then the operation button is operated 400 and the operation information selected by the user is inputted through the input units 81a and 81b And is input to the control unit 110.

Accordingly, the controller 110 locks the main door 70 and the auxiliary door 60 using the main locking device 70 and the auxiliary locking device 60 (402).

When the main door 70 and the auxiliary door 60 are locked, the control unit 110 proceeds to proceed with a series of strokes of the washing machine 1 according to the operation information input from the input units 81a and 81b (404).

While the washing machine 1 is running, the controller 110 determines whether the laundry addition button 82 has been operated (406).

If it is determined in step 406 that the laundry addition button 82 is operated, the control unit 110 counts the pressing time of the laundry addition button 82 in step 408. If the first time (About 3 seconds to determine whether to open the auxiliary door or to open the auxiliary door) has elapsed (410).

The control unit 110 controls the internal temperature of the drum 30 and the rotation of the drum 30 so as to determine whether the main door 70 is safe even if the main door 70 is opened before releasing the locking of the main door 70. [ And proceeds to an operation algorithm for confirming whether or not it exists.

The control unit 110 first detects the internal temperature T of the drum 30 through the temperature sensor 104 and determines whether the detected drum internal temperature T is lower than the set temperature Ts (414). This is for the purpose of eliminating the risk of a safety accident such as burning by the high temperature air inside the drum 30 when the laundry is additionally supplied through the main door 70.

If it is determined in step 414 that the drum internal temperature T is not lower than the set temperature Ts, the control unit 110 determines that the drum 30 is in an operating condition in which the main door 70 can not be opened because the temperature inside the drum 30 is high And outputs sound (for example, a Beep sound) through the sound output unit 140 to notify the user that the laundry can not be further loaded. At the same time, the display unit 83 is flickered so that the user can easily confirm that the laundry can not be additionally loaded (step 416).

If it is determined in step 414 that the drum internal temperature T is lower than the preset temperature Ts, the control unit 110 stops the rotation operation of the drum 30 through the driving unit 130 (step 418) It is determined whether the drum 30 is stopped through the sensor 106 (420). This is for the purpose of eliminating the risk of a safety accident such as being hurt by the rotation of the drum 30 when the laundry is additionally supplied through the main door 70.

If it is determined in step 420 that the drum 3 does not stop, the control unit 110 determines that the main door 70 can not be opened, and proceeds to step 426 to transmit the sound through the sound output unit 140 And the display unit 83 blinks to notify that the laundry can not be further loaded through the main door 70.

If it is determined in step 420 that the drum 3 is stopped, the controller 110 determines that the main door 70 can be opened. If the controller 110 determines that the main door 70 is opened, The water in the tub 20 is drained by a predetermined level (an appropriate water level at which the overflow does not occur even when the main door is opened) (422). This is to prevent the water in the tub 20 from overflowing to the outside through the main door 70 when the main door 70 is opened.

After the water in the tub 20 is drained, the controller 110 releases the locking of the main door 70 (424).

When the locking of the main door 70 is released, the user additionally loads the laundry through the main door 70 and then locks the main door 70 and locks the main door 70 again (step 428) .

When the main door 70 is again locked, the controller 110 controls the water level of the lowered tub 20 to be lowered to the inside of the tub 20 through the water supply device 13 Water is re-watered (430).

When the water is refilled into the tub 20, the controller 110 continues the washing (1) (specifically, washing, rinsing, and dewatering) steps (432).

Then, the control unit 110 determines whether or not the laundry has been completed (step 434). If not, the process returns to step 406 to determine whether the laundry addition button 82 has been operated.

The control unit 110 cancels the locking of the main door 70 and the auxiliary door 60 so that the laundry can be taken out through the input port 2a (step 436) .

On the other hand, if it is determined in step 406 that the laundry addition button 82 is not operated, the control unit 110 proceeds to step 432 to execute the subsequent washing machine 1 (specifically, washing, rinsing, and dehydrating) Continue to proceed.

If it is determined in step 410 that the auxiliary door 60 has not been opened before the locking of the auxiliary door 60 is completed, An operation algorithm for confirming whether the temperature and the drum 30 are rotating is proceeded.

The control unit 110 first detects the internal temperature T of the drum 30 through the temperature sensor 104 and determines whether the detected drum internal temperature T is lower than the set temperature Ts (442). This is for the purpose of eliminating the risk of a safety accident such as burning by the high temperature air inside the drum 30 when the laundry is additionally supplied through the auxiliary door 60.

If it is determined in step 442 that the drum internal temperature T is not lower than the set temperature Ts, the controller 110 determines that the operation condition is that the temperature inside the drum 30 is high and the auxiliary door 60 can not be opened The process proceeds to step 426 to output sound through the sound output unit 140 and blink the display unit 83 to notify that the laundry can not be further inserted through the auxiliary door 60.

If it is determined in step 442 that the drum internal temperature T is lower than the set temperature Ts, the control unit 110 stops the rotation operation of the drum 30 through the driving unit 130 (step 444) It is determined whether the drum 30 is stopped through the sensor 106 (446). This is for the purpose of eliminating the risk of a safety accident such as being hurt by the rotation of the drum 30 when the laundry is additionally supplied through the auxiliary door 60.

If it is determined in step 446 that the drum 3 does not stop, the control unit 110 determines that the auxiliary door 60 can not be opened, and proceeds to step 426 to transmit the sound through the sound output unit 140 And the display unit 83 blinks to notify that the laundry can not be further loaded through the main door 70.

On the other hand, if it is determined in step 446 that the drum 3 is stopped, the controller 110 determines that the auxiliary door 60 is openable and releases the locking of the auxiliary door 60 (448).

When the locking of the auxiliary door 60 is released, the user further puts the laundry through the auxiliary door 60 (450), and then the auxiliary door 60 is closed to lock the auxiliary door 60 again (452) .

When the auxiliary door 60 is locked again, the controller 110 proceeds to step 432 to continue the subsequent washing machine 1 (specifically, washing, rinsing, and dehydrating) The locking of the main door 70 and the auxiliary door 60 is released so that laundry can be taken out through the inlet 2a.

Next, a method for changing the stroke profile for each stroke when the laundry is additionally inserted during the stroke of the washing machine 1 will be described with reference to Figs. 9 to 12. Fig.

FIG. 9 is an operation flowchart showing a control algorithm of a washing stroke profile in a washing machine according to an embodiment of the present invention.

9, when the user inserts the laundry into the drum 30 and inputs the operation information related to the operation of the laundry course and the washing machine 1 according to the type of the laundry, the operation information selected by the user is input to the input unit 81a, And 81b.

Accordingly, the control unit 110 drives the motor 7 to detect the weight (load amount) of the laundry loaded into the drum 30. The method of driving the motor 7 to detect the weight of the laundry is to rotate the motor 7 at the weight detection RPM (about 70 to 150 RPM) while applying a constant duty (90 V) to the motor 7, A method of detecting the weight using the time taken until the rotation speed of the motor 7 and a method of detecting the weight using the time required to reach a constant speed (or a predetermined number of revolutions) using the instantaneous acceleration of the motor 7 A torque is given to the motor 7 for a predetermined time to directly or indirectly change the inertia amount of the drum 30, as disclosed in Japanese Patent Application Laid-Open Nos. 2002-336593, 2004-267334, and 07-90077 And a method of detecting the weight using the second law of motion (torque = inertia ㅧ acceleration).

In addition, it is needless to say that the load (load) of the laundry can be detected using a load cell in a known manner.

When the weight (load) of the laundry is detected, the controller 110 controls the motor RPM, the operation rate (motor on-off time), the target washing water level and the target rinsing water level, the washing time, And sets the number of times.

Setting of the motor RPM, the operation rate (motor on-off time), the target washing level and the target rinsing water level, the washing time and the number of times of rinsing, etc. according to the weight of the laundry (load) This is the case when no additional command is input. When the user further inputs a separate instruction regarding the operation of the washing machine 1, the user can set the RPM and the operation rate (motor on-off time), the target washing level and the target rinsing water level, which are set according to the weight (load amount) The number of times of washing and the number of times of rinsing and the like are changed according to the user command.

The control unit 110 then determines whether the laundry is to be washed in operation 500. If the washing operation is started in step 502, the controller 110 starts counting the washing time in step 502. In step 502, The water supply valve 15 and the detergent supply device 40 are operated.

When the water supply valve 15 is operated, the water supply valve 15 is opened and the water (washing water) supplied through the external water supply pipe is supplied to the tub 20 through the water supply pipe 14 and the detergent supply device 40 . At this time, the detergent in the detergent supply device 40 is dissolved by the water (washing water) to be supplied to the tub 20 through the connection pipe 16 together with water (washing water) Specifically, between the tub and the drum, detergent water (water + detergent) is supplied (504).

Accordingly, the controller 110 detects the water level of the water supplied to the tub 20 through the water level sensor 102 to determine whether the water level is the set target washing water level (target water level frequency) Continue the water supply operation until the target wash level is reached.

When the level of the water supplied to the tub 20 reaches the target washing water level through the water supply operation, the controller 110 stops the water supply valve 15 to stop the washing water supply operation.

When the washing water (specifically, detergent water) is supplied to the target washing water level, the control unit 110 drives the motor 7 with the motor RPM and the operation rate set for the washing cycle to stir and rotate the drum 30, The washing cycle starts by using the flow of laundry and the flow of water generated by the stirring and rotating operation of the drum 30 (506).

During the washing process, the controller 110 determines whether the laundry addition button 82 has been operated (508).

If it is determined in step 508 that the laundry addition button 82 is operated, the controller 110 controls the operation of the drum 30 to determine whether it is safe to open the auxiliary door 60 before releasing the locking of the auxiliary door 60 An operation algorithm for checking the internal temperature and the rotation of the drum 30 is performed (510). The algorithm for confirming whether the auxiliary door 60 can be opened or closed is described in detail with reference to Figs. 6A and 6B, Figs. 7A and 7B, Figs. 8A and 8B, and a duplicate explanation will be omitted.

Then, the control unit 110 controls the laundry adding button 82 so that the time for adding the laundry starts the washing cycle, and the second time (for measuring whether the washing time is compensated for, about 10 minutes) (512).

If it is determined in step 512 that the second time has not elapsed, the controller 110 advances the washing cycle according to the set washing time (step 514). This is because, in the case where the laundry is further added before the start of the washing cycle and the second time, it is determined that the washing performance can be maintained even if the washing cycle is performed for a predetermined washing time.

If it is determined in step 512 that the second time has elapsed, the controller 110 compensates for the second time elapsed from the set washing time to proceed to the washing cycle (step 516). At this time, the compensation time does not exceed the second time, and the washing time is prolonged, thereby eliminating the inconvenience of use that the user can feel. In addition, when the laundry is added at the time when the washing cycle starts and the second time has elapsed, the washing cycle is performed at the compensated washing time to maintain the washing performance.

In addition, the user can inform the user of the extension of the washing time by the compensation of the second time through the display unit 83, so that the user can select the compensation of the washing time.

On the other hand, if it is determined in step 508 that the laundry addition button 82 is not operated, the controller 110 proceeds to step 514 to continue the washing operation according to the set washing time.

Then, the control unit 110 determines whether the washing cycle is completed (518). When the washing cycle is completed, the control unit 110 stops the motor 7 and operates the drain pump 5 to drain the washing water (washing water + detergent) After that, the washing cycle in which intermediate dehydration is performed is terminated.

In the meantime, in the washing cycle of the present invention, the washing time is prolonged according to the time when the laundry is added. However, the present invention is not limited thereto, and the laundry RPM may be adjusted without extending the washing time, So that the washing performance can be maintained. Also, it is needless to say that the washing performance and the washing performance can be compensated by adjusting both the washing time and the washing RPM.

10 is an operation flowchart showing a control algorithm of the rinsing stroke profile in the washing machine according to the embodiment of the present invention.

10, the control unit 110 determines whether or not the rinsing operation is performed (600), and operates the water supply valve 15 to supply water (rinsing water) necessary for the rinsing operation in the rinsing operation.

When the water supply valve 15 is operated, the water supply valve 15 is opened and water (rinsing water) is supplied to the tub 20 through the water supply pipe 14 (602). At this time, the controller 110 may control the water supply operation using the agitating water supplying the rinsing water while stirring the drum 30 left and right to improve the rinsing performance. This is because the laundry adhering to the drum 30 due to the intermediate dewatering after the washing operation is dropped and mixed well with the water, thereby improving the rinsing performance.

Accordingly, the controller 110 detects the water level of the water supplied to the tub 20 through the water level sensor 102 to determine the target rinsing water level (target water level frequency), and when the water level is supplied to the tub 20 The water supply operation is continued until the target rinsing water level is reached.

When the rinse water supply to the target rinsing water level is completed, the controller 110 drives the motor 7 with the motor RPM set at the rinsing cycle to rotate the drum 30 to rotate the water (rinsing water) And starts a rinsing cycle (604).

During the rinsing cycle, the controller 110 determines whether the laundry addition button 82 has been operated (606).

If it is determined in step 606 that the laundry addition button 82 is operated, the controller 110 controls the operation of the drum 30 to determine whether it is safe to open the auxiliary door 60 before releasing the locking of the auxiliary door 60 An operation algorithm for confirming the internal temperature and the rotation of the drum 30 is performed (608).

Next, the controller 110 determines whether rinsing is performed once at the point of adding the laundry by operating the laundry addition button 82 (610).

As a result of the determination in step 610, if the rinse is performed once, the controller 110 advances the rinse cycle according to the set rinse number (612). This means that the rinsing performance can be maintained even if the rinsing process is performed only for a predetermined number of times of rinsing in the case of additionally loading the laundry at the time of rinsing once.

On the other hand, if it is determined in step 610 that the rinse is not performed once, the controller 110 proceeds to the rinse cycle by compensating the number of times of rinse once at the set rinse number (612). At this time, the number of times of rinsing to be compensated does not exceed one time, and the rinse time becomes long, thereby eliminating the inconvenience of use that the user can feel. In addition, when laundry is added at the number of times of rinsing more than two times, the rinsing cycle is performed by the number of rinsed times compensated to maintain the rinsing performance.

Then, the controller 110 determines whether the rinsing cycle is completed (616). When the rinsing cycle is completed, the control unit 110 stops the motor 7 and operates the drain pump 5 to drain water (rinsing water) End of administration.

On the other hand, in the rinsing cycle of the present invention, when the time for adding laundry is two or more rinses, the number of times of rinsing is compensated to increase the number of times of rinsing. However, the present invention is not limited to this, The rinsing cycle may be further performed for a predetermined time to maintain the rinsing performance according to the addition of the laundry. It should be noted that the same purpose and effect as those of the present invention can be achieved even if the rinsing step is further limited to the last rinsing for a certain period of time, to be.

11 is an operation flowchart showing a first control algorithm of a dehydration stroke profile in a washing machine according to an embodiment of the present invention.

In Fig. 11, the control unit 110 determines whether or not a dewatering process is performed (700). If the dewatering process is performed, the motor 7 is accelerated at a rotation speed (dewatering speed) determined in accordance with the dewatering profile to advance the dewatering process (702).

During the dewatering process, the controller 110 determines whether the laundry addition button 82 has been operated (704).

If it is determined in step 704 that the laundry addition button 82 is operated, the controller 110 controls the operation of the drum 30 to determine whether it is safe to open the auxiliary door 60 before releasing the locking of the auxiliary door 60 An operation algorithm for checking the internal temperature and the rotation of the drum 30 is performed (706).

Next, the control unit 110 determines whether the dehydration process is completed (708). When the dehydration process is completed, the control unit 110 stops the motor 7 and ends the dehydration process.

On the other hand, if it is determined in step 704 that the laundry addition button 82 is not operated, the controller 110 proceeds to step 708 to determine whether the dehydration process is completed, and then proceeds to the subsequent operation.

12 is an operational flowchart showing a second control algorithm of a dehydration stroke profile in a washing machine according to an embodiment of the present invention.

12, the control unit 110 determines whether or not a dehydration process is performed (step 800). If the dehydration process is performed (step 802), the control unit 110 accelerates the motor 7 at a predetermined rotational speed (dehydration rate) in accordance with the dehydration profile.

During the dewatering process, the control unit 110 determines whether the laundry addition button 82 has been operated (804).

If it is determined in operation 804 that the laundry addition button 82 is operated, the control unit 110 measures dehydration RPM to determine whether the RPM is about 300 RPM (806).

If it is determined in step 806 that the RPM is excessive, the controller 110 determines that the auxiliary door 60 can not be opened and outputs sound (for example, Beep sound) through the sound output unit 140 Thereby informing the user that the laundry can not be further loaded. At the same time, the display unit 83 is blinked so that the user can easily confirm that the laundry can not be additionally loaded (808).

On the other hand, if it is determined in step 806 that the RPM is not an excessive RPM, the controller 110 determines 810 whether the dehydration RPM is the maximum RPM (about 1000 to 1200 RPM).

If the maximum RPM is determined in step 810, the control unit 110 determines that the auxiliary door 60 can not be opened. In step 808, the controller 110 outputs sound through the sound output unit 140, 83) is turned on to notify that the laundry can not be further charged.

If it is determined in step 810 that the RPM is not the maximum RPM, the controller 110 controls the internal temperature of the drum 30 so as to determine whether it is safe to open the auxiliary door 60 before releasing the locking of the auxiliary door 60 An operation algorithm for confirming whether the drum 30 is rotated is proceeded (812).

Then, the control unit 110 determines whether the dehydration process is completed (814). When the dehydration process is completed, the control unit 110 stops the motor 7 and ends the dehydration process.

On the other hand, if it is determined in step 804 that the laundry addition button 82 is not operated, the controller 110 proceeds to step 814 to determine whether the dehydration process is completed, and then proceeds to the subsequent operation.

9 to 12, an example of changing the stroke profile in order to compensate for the washing, rinsing, and dewatering performance when the laundry is to be added through the auxiliary door 60 has been described as an example, It is needless to say that it is also possible to change the stroke profile for compensating the washing, rinsing and dewatering performance even when laundry is to be added through the main door 70.

In the embodiment of the present invention, laundry is further introduced through the auxiliary door 60 or the main door 70. However, in the embodiment of the present invention, the auxiliary door 60 or the main door 70 70 are not limited to laundry, and it is needless to say that the same objects and effects as those of the present invention can be achieved even when a detergent or a fabric softener is input.

The foregoing detailed description is illustrative of the present invention. In addition, the foregoing is intended to illustrate and explain the preferred embodiments of the present invention, and the present invention may be used in various other combinations, modifications, and environments. That is, it is possible to make changes or modifications within the scope of the concept of the invention disclosed in this specification, within the scope of the disclosure, and / or within the skill and knowledge of the art. The embodiments described herein are intended to illustrate the best mode for implementing the technical idea of the present invention and various modifications required for specific applications and uses of the present invention are also possible. Accordingly, the detailed description of the invention is not intended to limit the invention to the disclosed embodiments. It is also to be understood that the appended claims are intended to cover such other embodiments.

1: washing machine 2a: inlet
5: Drain pump 7: Motor
15: water supply valve 20: tub
30: Drum 40: Detergent supply device
60: auxiliary door 61, 71:
62: auxiliary locking device 70: main door
72: main locking device 81a, 81b:
82: laundry addition button 83: display part
100: sensor part 102: water level sensor
104: Temperature sensor 106: Current sensor
110: control unit 120: memory
140:

Claims (1)

A body which forms an appearance and on which an inlet is formed;
A tub installed in the main body to receive water;
A drum rotatably installed in the tub and receiving the laundry;
A motor for providing power to the drum;
A main door installed in the main body to open and close the inlet;
A main locking device that operates to be in a state in which the main door can be opened or in a state to prevent opening of the main door;
An auxiliary door installed in the main door and openable and closable separately from the main door;
An auxiliary locking device that operates in a state in which the auxiliary door is openable or in a state of preventing the opening of the auxiliary door;
A water level sensor for detecting the water level of the water stored in the tub; And
Controls the main locking device to be in a state of preventing the opening of the main door and controls the auxiliary locking device to be in a state of preventing the opening of the auxiliary door, And a control unit for controlling operation of at least one of the main locking device and the auxiliary locking device such that at least one of the door and the auxiliary door is in an openable state,
Wherein the control unit controls the operation of the auxiliary locking device so that the auxiliary door can be opened when it is determined that the detected water level is lower than a predetermined reference water level,
Wherein the reference level is lower than the installation position of the auxiliary door.

Images