KR101139445B1 - Control method of washing machine - Google Patents

Abstract

 In the washing machine according to the present invention, when the door lock switch for locking the door unlocks the door, the door is forcibly opened while restoring the spring pressed by the door, thereby informing the user of all the end of the washing machine. Even if the laundry is left in the drum for a predetermined time, the laundry is naturally ventilated, thereby minimizing odor.

Washing machine, door, door lock switch, spring, permanent magnet, electromagnet, laundry, drum

Description

Washing machine and its control method {Control method of washing machine}             

1 is a perspective view of a washing machine according to a first embodiment of the present invention;

2 is a partial cutaway cross-sectional view showing the inside of the first embodiment of the washing machine according to the present invention;

3 is a cross-sectional view when the door is closed in the first embodiment of the washing machine according to the present invention;

4 is a cross-sectional view when the door is forcibly opened in the first embodiment of the washing machine according to the present invention;

5 is a perspective view of a washing machine according to a second embodiment of the present invention;

6 is a cross-sectional view of the door closing of the second embodiment of the washing machine according to the present invention;

7 is a cross-sectional view when the door is forcibly opened in the second embodiment of the washing machine according to the present invention;

8 is a flowchart illustrating a control method of a washing machine according to a second embodiment of the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

2: casing 3: laundry entrance hall

4: door 5: base

6: cabinet 7; Top plate

8: cabinet cover 9: control panel                 

10: hook 12: door lock switch

14: spring 20; Tub

25: motor 30; drum

40: drying apparatus 80: permanent magnet

82: electromagnet w: wash water

m: laundry i: electric current

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine and a control method thereof, and more particularly, to a washing machine and a control method thereof capable of preventing the generation of odors of laundry remaining in the drum after completion of all strokes of the washing machine.

In general, a washing machine uses washing and rinsing, dehydration, and drying processes to remove contaminants on clothes, bedding, etc. (hereinafter referred to as laundry) contained in a drum by using water and detergent (hereinafter, referred to as washing water). The device is to wash the laundry through.

The washing machine forms an exterior and a casing having a laundry access hole formed at one side thereof, a door installed at the casing to open and close the laundry access hole, a tub embedded in the casing, and a wash water contained therein, and rotatable inside the tub. A drum positioned to accommodate the laundry and a motor to rotate the drum.                         

The casing is equipped with a door lock switch that locks the door when the door is not to be opened arbitrarily, such as a drum rotating.

Also, in recent years, a drying device for drying laundry by lowering moisture while circulating air in the drum is installed.

The conventional washing machine configured as described above closes the door after inputting laundry through the laundry access hole, and inputs a stroke such as washing, rinsing, dehydration, and drying. Device and the like, and the door lock switch locks the door when the drum is rotated or the like so that the door does not open arbitrarily.

On the other hand, the door lock switch unlocks the door when all the strokes input by the user is finished, the user pulls the door forward to open the laundry entrance hole and then take out the laundry.

However, the washing machine according to the prior art has a problem in that if the user does not take out the laundry by opening the door, the odor is generated in the laundry due to the moisture remaining in the laundry, and the laundry does not run for a long time. If it is not withdrawn, there is a problem that the odor remains in the laundry and the laundry must be rewashed.

On the other hand, in order to prevent the occurrence of the odor, it is also possible to control the motor so that the laundry flows after a predetermined time after all the input stroke is finished, in this case, the effect of removing the odor due to the flow of laundry is insignificant And, if the user does not take out the laundry, the control of the motor must be repeated, there is a problem that the power consumption is increased.

The present invention has been made to solve the above problems of the prior art, and an object of the present invention is to provide a washing machine capable of minimizing the occurrence of odor of laundry and informing the user of all the end of the washing machine.

Another object of the present invention is to provide a control method of a washing machine that can prevent the generation of odor of laundry by one control.

Washing machine according to the present invention for solving the above problems is a door connected to the casing to open and close the laundry access hole formed in the casing; A drum located inside the casing to accommodate the cloth; A door lock switch installed on the casing such that the door is locked / released; And a spring for supporting the door to open the laundry access hole when the door lock switch is unlocked.

In addition, the washing machine according to the present invention comprises a door connected to the casing to open and close the laundry access hole formed in the casing: a drum located inside the casing and containing the cloth; A permanent magnet installed at one side of the casing and the door; It is characterized in that it comprises an electromagnet is installed on the other side of the door and the casing to act to attract / repulse the permanent magnet to keep the door closed / forcibly opened.

In addition, the control method of the washing machine according to the present invention is characterized in that when the stroke is input and the washing machine is operated, the door is kept closed, and when all the strokes are input, the door is forcibly opened.

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

1 is a perspective view of a washing machine according to a first embodiment of the present invention, Figure 2 is a partially cutaway cross-sectional view showing the interior of the washing machine according to the first embodiment of the present invention.

In the washing machine according to the present embodiment, as illustrated in FIGS. 1 and 2, a laundry access hole 3 is formed on the front side of the casing 2, and a door 4 for opening and closing the laundry access hole is mounted. .

The casing 2 includes a base 5, a cabinet 6 disposed above the base 5, a front side of the cabinet 6, and the laundry entry hole 3 formed therein. A cabinet cover 7 is rotatably connected to the door 4 and a top plate 8 disposed on the upper surface of the cabinet 6.

On the upper side of the cabinet cover 7, a control panel 9 for inputting various strokes and times of the washing machine is arranged.

As shown in FIG. 1, a hook 10 is provided at one side of the door 4, and a door lock switch 12 is installed at the cabinet cover 2 to lock / unlock the hook 10. do.

The door 4 is connected to the cabinet cover 7 so that the hinge 4a is connected to one side of the left and right so as to be rotatable back and forth, and the hook 10 is mounted on the opposite side of the hinge 4a.

The hook 10 is installed on the door 4 so as to be rotated by a predetermined angle and is supported by a return spring built in the door 4.

In addition, at one side of the casing 2, the door 4, and the door lock switch 12, the door 4 may open the laundry access hole 3 when the door lock switch 12 is unlocked. A spring 14 for supporting the door 4 is installed.

On the other hand, the inside of the casing 2, as shown in Figure 2, the tub 20 for holding the water mixed with detergent or clean water (hereinafter referred to as wash water) is mounted to the buffer.

The tub 20 is mounted on the damper 2a connected to the base 2 and connected to the spring 6a connected to both sides of the cabinet 6 so that the tub 20 is connected to the damper 2a and the spring 6a. Is bufferably supported.

The tub 20 is a circular cylinder lying on its side, and an opening hole 21 is formed at the rear of the laundry access hole 3, and a water supply port for supplying the washing water w is formed at one upper side thereof. , The lower one side is formed with a drain for draining the washing water (w).

In addition, the front portion of the tub 20 is in close contact with the back of the door 4 when the door 4 is closed, the gasket 24 to prevent leakage of the wash water (w) and the separation of the laundry (m) is The back of the tub 20 is equipped with a motor 25 which is a driving means for rotating the drum 30 to be described later.

The motor 25 is a stator fixed to the rear surface of the tub 20, a rotor surrounding the circumference and the back of the stator, and fixed to the rotor and penetrates the tub and fixed to the rear side of the drum Consisting of a shaft.

The drum 30 is a barrel lying sideways like the tub 20 so that the lower part is immersed in the wash water w in the tub 20, and is rotatably positioned inside the tub 20.

The drum 30 has a laundry access hole 31 formed at the rear of the laundry access hole 3 of the cabinet cover 7 so that laundry (m) can enter and exit, and wash water (w) at a circumferential or rear surface thereof. Alternatively, a plurality of through holes 32 are formed to allow air to enter and exit, and a lifter 33 is mounted on the inner circumferential surface of the circumference to lift and drop the laundry m.

In addition, the outside of the tub 20 is provided with a drying device 40 for drying while circulating the air in the drum (30).

The drying device 40 includes a condensation duct 41 connected to one side of the tub 20 and coolant into the condensation duct 41 so that air inside the tub 20 and the drum 30 flows in. Coolant hose 42 installed to supply water, a coolant valve 43 connected to an external hose 43a to regulate the coolant supplied to the coolant hose 42, and air passing through the condensation duct 41 are supplied to the drum. The drying duct 44 and the tub 20 and the air in the drum 30 are connected to the condensation duct 41 and to communicate with the inside of the gasket 24 so that the air can be blown forward. After passing through the condensation duct 41 and the drying duct 44 in turn, the circulation fan 45 installed in the drying duct 44 and the air passing through the drying duct 44 are circulated into the drum 30. It is configured to include a heater 46 installed in the drying duct 44 to be heated.

Reference numeral 60 is a water supply valve connected to the external hose 60a to regulate the water supplied through the external hose 60a, reference numeral 62 is a water supply hose for guiding the water passing through the water supply valve 60, Reference numeral 64 is a detergent container installed so that detergent can be mixed with the water guided by the water supply hose 62, and reference numeral 66 directs the washing water passing through the detergent container 64 to the water supply port of the tub 20. Supply bellows pipe.

In addition, reference numeral 70 is a drainage bellows pipe connected to the drain hole of the tub 20 so that the washing water w in the tub 20 is drained, and reference numeral 72 is guided to the drainage bellows pipe 70. A drain pump for pumping wash water, and reference numeral 74 is a drain hose connected to the drain pump 72 to drain the wash water pumped from the drain pump 72 to the outside of the washing machine.

3 is a partially cutaway perspective view of the washing machine according to the first embodiment of the present invention when the door is closed, and FIG. 4 is a partially cutaway perspective view of the washing machine according to the present invention when the door is forcibly opened.

As shown in FIGS. 3 and 4, the door lock switch 12 includes a switch casing 12b fastened by fastening means such as a fastening bolt 12a next to a laundry access hole, and the hook 10. A slider 12c slidably mounted to the switch casing 12b to latch / release the switch casing 12b, and a locking pin provided to the switch casing 12b to hook one side of the slider 12c ( 12d) and pin driving means such as a solenoid provided on the switch casing 12b so that the locking pin 12d locks / unlocks the slider 12c.

The slider 12c is compressed to the switch casing 12b when the slider 12c is pushed by the hook 10, and the slider 12c when the hook 40 is released to exit the door lock switch 12. Is equipped with a return spring 12e for restoring.

The spring 14 is compressed by being pressed by the door 4 when the door 4 is closed, as shown in FIG. 3, and as shown in FIG. 4, in the door lock switch 12 the door ( When 4) is unlocked, the door 4 is restored while pushing the door 4 in the door opening direction.

Here, the spring 14 is preferably designed such that the door 4 is orthogonal to the front surface of the casing 2 when the door 4 is unlocked.

Hereinafter, the operation of the present invention will be described.

First, after inserting the laundry (m) through the laundry access hole (3), if the door 4 is rotated to block the laundry access hole (3), the door 4 is As shown in FIG. 3, the hook 10 is inserted into the door lock switch 12 while compressing the spring 14.

The hook 10 inserted into the door lock switch 12 is latched in the door opening direction by the slider 12c while pushing the slider 12c to the side as shown in FIG. The spring 12e is in a compressed state by the slider 12c.

When the user inputs a stroke of washing, rinsing, dehydration, drying, etc. and operates the washing machine in the state in which the door 4 is closed as described above, the washing machine performs the motor 25 and the circulation fan 45 according to the input command. Electric devices such as the heater 46, the water supply valve 60, and the drainage pump 72 are driven to perform washing, rinsing, dehydration, and drying.

In addition, the washing machine controls the door lock switch 12 in the locking mode until all strokes input by the user are finished.

In the locking mode, the door lock switch 12 protrudes to the slider locking position, as shown in FIG. 3, to prevent the slider 12c from being restored to its original position, and the hook 10 The movement is restricted by the slider 12c, and the state is caught by the switch casing 12b.

On the other hand, the washing machine controls the door lock switch 12 in the unlocking mode when all the strokes input by the user are finished.

In the unlocking mode, the door lock switch 12 moves the locking pin 12d to the slider unlocking position, and the slider 12c moves the compressed return spring 12e as shown in FIG. It is moved in the opposite direction as when the door is locked by a restoring force, and the hook 10 is not caught in the door opening direction by the switch casing 12b.                     

In addition, the spring 14 compressed by the door 4 is restored, and the door 4 is pushed in the door opening direction, and the door 4 has the laundry access hole as shown in FIG. 1. 3) will be opened.

When the door 4 is automatically opened, the user can easily confirm that the washing machine operation is finished, and the laundry m in the drum 30 is directly ventilated with the outside of the washing machine to minimize the generation of odors even if time passes.

5 is a perspective view of a washing machine according to a second embodiment of the present invention, Figure 6 is a cross-sectional view when the door of the second embodiment of the washing machine according to the present invention, Figure 7 is a cross-sectional view when the door is forcibly opened the second embodiment of the washing machine according to the present invention to be.

5 to 7, the washing machine according to the present embodiment applies a manpower / repulsive force to the permanent magnet 80 installed on one side of the casing 2 and the door 4 and the permanent magnet 80. And an electromagnet 82 provided on the other side of the door 4 and the casing 2 so as to keep the door 4 closed / forced to open, and other than the permanent magnet 80 and the electromagnet 82. Other constructions and operations of the casing 2, the tub 20, the drum 30, and the like are the same as those in the first embodiment of the present invention, and the same reference numerals are used, and detailed description thereof will be omitted.

8 is a flowchart illustrating a control method of a washing machine according to a second embodiment of the present invention.

First, after putting the laundry (m) through the laundry entrance hole (3), the door (4) is positioned so that the permanent magnet 80 is close to the electromagnet 82, washing, rinsing, dehydration, drying When the washing machine is operated by inputting the stroke, etc., the current i is applied to the electromagnet 82 in the direction of pulling the permanent magnet 80. (S1.S2)

The permanent magnet 80 is in close contact with the electromagnet 82 by the attraction force formed by the electromagnet 82, the door 4 is locked by this attraction force does not open arbitrarily.

In the state in which the opening of the door 4 is limited as described above, electric devices such as the motor, the circulation fan, the heater, the water supply valve, and the drainage pump are driven to perform the washing, rinsing, dehydration, and drying operations. (S3)

In the washing machine, when all the strokes input by the user are finished, the current i is applied to the electromagnet 82 in the direction of pushing the permanent magnet 80.

Here, the current i is preferably applied such that the door 4 is disposed orthogonal to the front surface of the casing 2.

The permanent magnet 80 is pushed apart from the electromagnet 82 by the repulsive force formed by the electromagnet 82, the door 4 is rotated by this repulsive force to open the laundry access hole (3) (S4)

When the door 4 is automatically opened, the user can easily confirm that the washing machine operation is finished, and the laundry m in the drum 30 is directly ventilated with the outside of the washing machine to minimize the generation of odors even if time passes.

 In the washing machine according to the present invention configured as described above, when the door lock switch for locking the door unlocks the door, the door is forcibly rotated while restoring the spring that was pressed by the door. It can be informed, even if the laundry is left in the drum for a predetermined time there is an advantage that the laundry is naturally ventilated to minimize the occurrence of odor.

In addition, the washing machine according to the present invention has a permanent magnet is installed on one side of the casing and the door, an electromagnet is installed on the other side of the door and the casing, it is possible to lock the door during the input stroke progress, all the stroke is entered Since the door can be forcibly opened when it is finished, it is possible to inform the user of the end of all strokes of the washing machine, and even if the laundry is left in the drum for a predetermined time, the laundry is naturally ventilated to minimize the occurrence of odor.

In addition, the control method of the washing machine according to the present invention has the advantage that the door is forcibly opened when all the input strokes are completed, thus preventing the occurrence of odor of laundry by only one control and minimizing power consumption.

Claims (4)

delete A casing in which laundry entry holes are formed; A drum disposed in the casing to accommodate the cloth introduced through the laundry access hole; A door rotatably connected to the casing to open and close the laundry access hole; Permanent magnet provided in any one of the casing and the door; And It includes an electromagnet provided in the other one of the casing and the door, When the polarity of the electromagnet causes the attraction force to act between the permanent magnet, the closed state of the door is maintained by the attraction force acting between the electromagnet and the permanent magnet, When the polarity of the electromagnet to act the repulsive force between the permanent magnet and the door is opened by the repulsive force acting between the electromagnet and the permanent magnet. delete The method of claim 2, Polarity of the electromagnet, After all the stroke of the washing machine is finished, the washing machine is variable so that the repulsive force is applied between the permanent magnet.

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