KR100739546B1 - washing machine having floating laundry detecting device - Google Patents

Abstract

An object of the present invention is to detect when the laundry, such as pillows are suspended for a certain height or more to ensure that the laundry can be performed smoothly without water scattering or foam damage caused by the laundry floating.

To this end, the present invention, the outer case, the storage tank provided in the outer case, the washing tank rotatably installed in the reservoir, a drive motor for rotating the washing tank, and the laundry accommodated in the washing tank When the height of the predetermined position or more is characterized in that the washing machine provided with a detection means provided to detect it.

Floating, detection, washing, response

Description

Washing machine having floating laundry detecting device

1 is a cross-sectional view showing the structure of a conventional washing machine, the structure of the transmission washing machine

2A to 2E are reference diagrams for explaining types of problems according to the prior art,

Figure 2a is a main component diagram for explaining a problem associated with water supply

Figure 2b is a main part configuration for explaining the problems associated with the transmission washing

Figure 2c is a main component diagram for explaining a problem associated with the shower rinsing

Figure 2d is a main component diagram for explaining the problems associated with dehydration

Figure 2e is a main component diagram for explaining the problems associated with the pumping circulation type washing machine

3 is a block diagram showing an example of a washing machine structure to which a laundry float detection apparatus according to a first embodiment of the present invention is applied;

4 is a plan view showing a structure of a washing machine to which a laundry float detection device according to a second embodiment of the present invention is applied;

5 is a perspective view of main parts of FIG. 4;

6 is a flow chart showing a water supply control process of the washing machine of the present invention.

7 is a flowchart illustrating a washing operation control process of the washing machine according to the present invention.

8 is a flowchart illustrating a rinsing stroke control process of the washing machine according to the present invention.

9 is a flow chart showing a dehydration operation control process of the washing machine of the present invention.

Explanation of symbols on the main parts of the drawings

1: Outcase 2: Water tank

3: washing tank 5: pulsator

7: Motor 8: Tub cover

30: Lead 40: Water supply port

90: floating prevention device 91: electrode sensor

The present invention relates to a washing machine, and more particularly, to provide a washing machine capable of detecting laundry when a laundry such as a pillow floats more than a predetermined height and performing washing without water splashing or foam damage.

In general, a washing machine is a product that removes various contaminants attached to clothes, bedding, etc. by using the emulsification of the detergent and the friction action of the water flow due to the rotation of the washing blade, and the impact of the pulsator on the laundry. By detecting the amount and type of laundry, the washing method is automatically set, and the water level of the washing water is supplied to the appropriate level according to the amount and type of laundry, and then washing is performed under the control of the microcomputer.

On the other hand, the driving method of the conventional washing machine is to transmit the rotational power of the drive motor to the washing shaft through the power transmission belt and pulley, etc. to rotate the pulsator or to the dehydration shaft to rotate the washing tank combined dehydration tank and By rotating the BLDC motor, there is a method of rotating the washing / dehydration tank for washing and dewatering at different speeds.

In addition, there is also a method of controlling the power transmission path differently while using a BLDC motor to perform washing by rotating the pulsator at low speed during washing, and dehydrating by rotating the pulsator and the dehydrating tank at the same time at the same time.

In addition, a method of performing permeation by spraying the pumped water stream into the washing tank while rotating the washing tank or the washing blade at a high speed during washing is also applied.

1 is a structural example of a conventional washing machine, which is a cross-sectional view schematically showing the structure of a permeable washing machine.

Referring to the drawings, in the conventional permeation washing machine, the reservoir 2 is supported by the plurality of supports 4 in the interior of the outer case 1, and the laundry is accommodated in the reservoir 2 and a plurality of the inner walls thereof. The washing tank 3 formed with the through hole 3a is rotatably installed by the washing shaft 6, and a pulsator 5 for forming a water flow is formed integrally with the washing tank at an inner lower end of the washing tank. A motor 7 for rotating the washing tub 3 is installed at one lower end side of the reservoir 2.

In addition, a tub cover 8 is installed at an upper end of the water storage tank 2 to inject the washing water raised between the washing tank 3 and the water storage tank into the washing tank. Is connected to the water supply line 10 for supplying the washing water to the washing tank (3) is installed, the bottom side of the water storage tank (2) is the final discharge of the wash water discharged through the through-hole (3a) of the washing tank to the outside A drain pipe 11 is installed.

In addition, the upper side of the washing tub 3 is provided with a detergent container 12 on which the detergent is automatically introduced by the washing water being supplied on the water supply line 10, and the circumferential surface of the washing tank 3 at the upper end thereof. Accordingly, a balance waiter 20 is provided to prevent vibration of the washing tank when dewatering.

The permeable washing machine configured as described above rotates the washing tub 3 and the pulsator 5 in one direction at a high speed to perform the washing stroke. In detail, the laundry tub 3 and the pulsator 5 are rotated at a high speed in one direction, and the laundry is in close contact with the inner wall of the tub. At this time, the wash water exiting through the tub 3a of the tub is covered with a tub cover 8. After passing through the laundry tank 3 again into the laundry through), the contaminants are separated while repeating this process.

On the other hand, unlike the structure illustrated above, there is also a structure in which the pulsator 5 forming the water flow is not formed integrally with the washing tank 3, but separately installed.

That is, the washing tank 3 and the pulsator 5 are separately installed so that the washing tank 3 and the pulsator 5 rotate in opposite directions at the time of washing by the rotation of the washing tank 3 (also referred to as through rotation). There is also a structure.

In addition, there is also a washing machine (see FIG. 2E) having a circulating water supply structure in which water in the washing tank 3 is pumped by the pump P and supplied again into the washing tank 3.

However, the conventional washing machine having such various structures had a disadvantage in that it does not solve the following problems in performing washing.

That is, conventional washing machines not only detect this when washing laundry including floating pillows, but also do not have an appropriate control algorithm corresponding to the floating of laundry, causing problems as follows.

First, referring to FIG. 2A, when water is supplied, for example, when a laundry such as a pillow floats in an upper portion of the washing tank 3, a phenomenon in which the rich laundry blocks the water supply flow path may prevent water supply from occurring, As the water supplied hits the floating pillow and splashes, water is introduced between the reservoir 2 and the outer case 1.

In particular, the water supply method includes a method of supplying water in a state in which the washing tank 3 is stopped, a method of supplying water while rotating the washing tank 3, and a combination of the above two methods. When the water pressure is weak, the water supply flow path is blocked, and when the water pressure is high, the water hits the floating laundry and water splashes in all directions.

In addition, when the laundry is floated in the rotary water supply, the water splashes in various directions by hitting the rotating laundry regardless of the water pressure.

Next, referring to FIG. 2B, when the laundry floats higher than the washing tub 3 during the permeation washing, the washing water penetrates the laundry and exits through the through hole 3a of the washing tub 3. In the process of being put back into the washing tank (3) through to hit the floating laundry scattered in all directions, the phenomenon that the detergent and wash water flows between the reservoir (2) and the outer case (1) occurs.

In addition, referring to FIG. 2C, when the shower rinse, the water tank 2 is rotated while supplying water, and in this case, when the laundry floats higher than the washing tank 3, the water supplied for the shower rinse hits the laundry. By being scattered, a phenomenon in which water flows in between the reservoir 2 and the outer case 1 together with the detergent occurs.

Referring to FIG. 2D, when the laundry such as a pillow floats higher than the washing tub 3 during dehydration, and the laundry tub 3 rotates at a high speed while the laundry adheres to the inner circumferential surface of the tub cover 8, foam damage is caused. Or wear occurs on the inner circumferential surface of the tub cover 8.

In addition, referring to FIG. 2E, in the pumping circulation method, the washing water in the washing tank 3 is pumped and sprayed to the washing tank 3 through the water supply port 40 or sprayed from the side surface of the washing tank 3. The water storage tank 2 is rotated while watering the water, and even in this case, when the laundry floats higher than the washing tank 3, the water circulated and resupplyed to the washing tank 3 is splashed by the laundry and scattered. Phenomenon that flows between the reservoir 2 and the outer case 1 occurs.

On the other hand, when water is introduced between the reservoir 2 and the outer case 1 due to the water splashing phenomenon due to the floating of the laundry, as described above, water enters the insulating part, causing a short, causing safety problems. If the carpet is laid on the floor, a problem occurs that damages the carpet.

In addition, if the water scattering due to the laundry is abundant during water supply, the water level is not reached to the predetermined water supply level, the water is continuously supplied or the water is made for a long time to cause a waste of water.

In addition, when the water is drained out of the reservoir 2 due to water splashing during permeation, not at the time of water supply, or the water is drained out of the reservoir 2 due to water splashing in a circulation method, the washing water is insufficient and the water is supplied again. There is also a problem that must be done.

In sum, the above-mentioned individual problems can not detect the floating of the laundry in the washing method applied to the existing washing machine and the existing washing machine, and can not provide a proper washing method for this, deteriorating washing performance due to lack of water and It causes foam damage, and there are many problems such as safety problems and water waste.

The present invention has been made to solve the above problems, to provide a device for detecting when the laundry, such as pillows are floating more than a certain height, by appropriately controlling the washing machine in response to the detection of the laundry floating in the washing machine It is an object of the present invention to allow washing to be performed smoothly without water splashing or foam damage caused by floating of laundry.

In order to achieve the above object, the present invention provides an outer case, a storage tank provided inside the outer case, a washing tank rotatably installed in the storage tank, a drive motor for rotating the washing tank, and the inside of the washing tank. If the height of the laundry accommodated in a predetermined position or more is characterized in that the washing machine comprising a detection means provided to detect this.

The detecting means is provided in the tub cover installed on the top of the reservoir, characterized in that the electrode sensor for detecting this when the floating laundry abuts.

The detecting means is characterized in that it comprises a float prevention tool provided in the tub cover installed in the upper end of the reservoir, and an electrode sensor provided in the float prevention tool.

The floating prevention device is characterized in that the mesh structure is installed so as to be located in the falling region of the wash water is supplied to the inside of the washing tank through the water supply port.

The electrode sensor provided in the floating guard is characterized in that it is installed on the outer surface of the floating guard.

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

3 is a block diagram showing a structure of a washing machine to which a laundry float detection apparatus according to a first embodiment of the present invention is applied. The washing machine according to the first embodiment of the present invention includes an outer case (1) and the outer case ( 1) a reservoir (2) provided inside, a tub cover (8) installed on the top of the reservoir (2), a washing tank (3) rotatably installed in the reservoir (2), and the washing tank (3) It comprises a drive motor to rotate the 7 and the detection means provided to detect the height of the laundry accommodated in the washing tank 3 is a predetermined position or more.

At this time, the detection means, characterized in that the electrode sensor 91 is provided in the tub cover (8) installed on the top of the reservoir (2) to detect when the floating laundry abuts.

According to the first embodiment of the present invention configured as described above, when the laundry floats above the height at which the electrode sensor is installed and contacts the two electrodes constituting the electrode sensor 91 at the same time, the resistance value between the two electrodes By reading the change, the float of the laundry is detected.

4 is a plan view showing a structure of a washing machine to which a laundry float detection apparatus according to a second embodiment of the present invention is applied. FIG. 5 is a perspective view of a main part of FIG. 4, and a washing machine according to a second embodiment of the present invention. The outer case (1), the reservoir (2) provided in the outer case (1), the tub cover (8) provided on the upper end of the reservoir (2), and rotatably inside the reservoir (2) A washing tank 3 to be installed, a driving motor 7 to rotate the washing tank 3, and detection means provided to detect the height of the laundry accommodated in the washing tank 3 when the height is greater than or equal to a predetermined position. It is configured to include.

At this time, the detection means is configured to include a floating prevention device (90) provided in the tub cover (8) provided in the upper end of the reservoir (2), and an electrode sensor (91) provided in the floating prevention device (90).

At this time, the floating prevention device 90 is a mesh structure which is installed to be located in the falling region of the wash water to be supplied to the inside of the washing tank 3 through the water supply port (40).

In addition, the electrode sensor 91 provided in the float prevention tool 90 is installed on the outer surface of the float prevention tool 90.

According to the second embodiment of the present invention configured as described above, when the laundry floats above the height at which the electrode sensor 91 is installed and contacts the two electrodes forming the electrode sensor 91 simultaneously, By reading the change in the resistance value, the floating of the laundry is detected.

In addition, the float prevention device 90 of the mesh structure of the present embodiment is laundry is installed on the water supply port 40 side, the washing water that floats near the water supply port 40, as the floating water outlet (90) does not float up and down By blocking the position so as to, to serve to prevent the water splashing phenomenon of the water supplied from the water supply port (40).

Hereinafter, the washing control process in the washing machine of the present invention having the float detection device having the configuration according to the first and second embodiments will be described.

First, FIG. 6 is a flowchart illustrating a water supply stroke control process. Referring to this, the water supply control process of the present invention will be described below.

The water supply is started, and while the washing tank 3 is rotated, the floating detection sensor is turned on to detect whether the laundry is suspended.

As a result of the detection, if it is determined that the laundry is floating by the detection action of the floating detection sensor, a corresponding operation for preventing water scattering is performed.

In this way, while the water supply is performed by the corresponding operation for preventing water scattering, it is continuously checked whether the water supply level is the set level.

At this time, it is determined whether the floating laundry has been detected when the water level has not reached the set level, and if the floating laundry has been detected, the countermeasure for continuing to prevent water scattering is continued. If it reaches, it stops supplying water and completes water supply administration.

On the other hand, in the above process, the corresponding operation for preventing water splashing can be made by reducing the rotational speed of the washing tub (3) when water supply while passing through the rotation.

In addition, in the above process, the corresponding operation for preventing water splashing may be made by reducing the rotational speed of the washing tub (3) when the water supply while passing through the rotation and gives an alarm.

In addition, in the above process, the corresponding operation for preventing water scattering may be made by stopping the water supply.

Next, the washing administration control process according to the present invention with reference to FIG.

First, the barrel is started, and the float detection sensor is turned on to detect whether the laundry is suspended.

As a result of the detection, when it is determined that the laundry is floating by the action of the floating detection sensor, a corresponding operation for preventing water scattering is performed.

Then, it is checked whether the washing time reaches the set washing time while performing the corresponding operation for preventing water scattering.

As a result of the detection, it is determined whether the floating laundry has been detected while the washing time does not reach the set washing time. If the floating laundry has been detected, the countermeasure for continuing to prevent water scattering is continued, and the washing time is set. If it reaches, the washing stops and the washing administration is completed.

On the other hand, in the above process, the corresponding operation for preventing water scattering can be made by decelerating and rotating the washing tank (3).

In addition, in the above process, the corresponding operation for preventing water scattering can be made by stopping the washing tank 3 and stirring only the pulsator 5.

In addition, in the above process, the corresponding operation for preventing water scattering can be made by rotating the washing tank 3 in reverse rotation and stirring the pulsator 5.

In addition, in the above process, the corresponding operation for preventing water scattering can be made by rotating the washing tub 3 at a speed at which the laundry is pressed.

That is, the rate at which the pressing washing is carried out refers to a speed at which the V-shaped water flow is made by centrifugal force, and the cannon water spraying into the washing tank 3 through the tub cover 8 is not formed. The laundry, wash water, and tub rotate at about the same speed.

On the other hand, in the above process, the corresponding operation for preventing water scattering can be made by stirring the washing tank (3).

Further, in the above process, the corresponding operation for preventing water scattering can be made by draining the water to lower the water level.

At this time, when performing drainage to prevent water scattering, if the washing tank 3 rotates at a high speed at a high speed, it is possible to spray through the tub cover 8, so that the water is simply drained to a level where no floating laundry is detected. do. In addition, as another method in performing drainage to prevent water scattering, even if the washing tank 3 is rotated at the maximum speed, the drainage is made to leave the minimum water level without spraying through the tub cover 8. There may be a way.

On the other hand, in the above process, the corresponding operation for preventing water splashing may be made by stopping the washing.

Next, the rinsing stroke control process according to the present invention will be described with reference to FIG. 8.

First, the floating detection sensor is turned on while the cylinder is started to detect whether the laundry is suspended.

As a result of the detection, when it is determined that the laundry is floating by the action of the floating detection sensor, a corresponding operation for preventing water scattering is performed.

Then, it is checked whether the rinsing time reaches the set rinsing time while performing the corresponding operation for preventing water scattering.

At this time, if the floating laundry has been detected in a state where the rinsing time has not reached the set rinsing time, and if the floating laundry has been detected, the countermeasure for continuing to prevent water scattering is continued. When the time is reached the rinse stops and the rinse cycle is completed.

On the other hand, in the above process, the corresponding operation for preventing water splash can be made by reducing the rotational speed of the washing tank (3).

In addition, in the above process, the corresponding operation for preventing water splashing can be made by reducing the rotational speed of the washing tank 3 and issuing an alarm.

In the above process, the corresponding operation for preventing water splashing may be performed by stopping the rinsing.

On the other hand, another rinsing stroke control method according to a feature of the present invention, the step of performing a shower water supply, starting the through rotation to turn on the floating detection sensor to detect whether the laundry floating, preventing water splashing when the floating laundry is detected Performing a corresponding operation for the step; checking whether the rinsing time has reached the set rinsing time; and determining whether the floating laundry has been detected when the rinsing time has not reached the set rinsing time. If there is an enemy, the step of continuing the corresponding operation for preventing water splashing, and if the rinse time reaches the set rinsing time, it may comprise the step of stopping the rinsing and completing the rinsing stroke.

In this case, as described in the above-described rinsing stroke control process, the corresponding operation for preventing water splashing may reduce the rotational speed of the washing tub 3, or may generate an alarm in addition to reducing the rotational speed of the washing tub 3, May stop the rinsing.

On the other hand, with reference to Figure 9 will be described the dehydration administration control process according to the present invention.

First, the floating detection sensor is turned on while the cylinder is started to detect whether the laundry is suspended.

As a result of the detection, when it is determined that the laundry is floating by the action of the floating detection sensor, a corresponding operation for preventing the cloth from being damaged and the tub cover 8 is performed.

Then, it is checked whether the dehydration time reaches the set dehydration time while performing the corresponding operation for preventing water scattering.

At this time, it is determined whether the floating laundry has been detected in the state that the dehydration time has not reached the set dehydration time, and if the floating laundry has been detected, the countermeasure operation for preventing damage to the cloth and wear of the tub cover 8 is continued. When the dehydration time reaches the set dehydration time, the dehydration is stopped and the dehydration administration is completed.

On the other hand, in the above process, the corresponding operation for preventing the cloth damage and wear of the tub cover 8 can be made by reducing the rotational speed of the washing tub (3).

In addition, in the above process, the corresponding operation for preventing the cloth damage and the wear of the tub cover 8 may be made by reducing the rotational speed of the washing tub 3 and alarming.

And, in the above process, the corresponding actuator for preventing cloth damage and wear of the tub cover 8 may be made by stopping dehydration.

So far, the present invention has been described with reference to preferred embodiments thereof, and one of ordinary skill in the art to which the present invention pertains may implement the modified embodiment within the essential technical scope of the present invention.

That is, the laundry float detection means of the present invention can be applied regardless of whether a washing machine of a permeation method or a permeate flow type, a pulsator integrated type or a pulsator separate type washing machine, and the like. It is possible.

The washing machine and its control method according to the present invention provide the following effects.

First, according to the present invention, unlike the conventional washing machine, the floating of the laundry can be detected.

Second, according to the present invention, unlike the laundry method applied to the existing washing machine, it is possible to provide a washing method that responds appropriately when the laundry is floating.

Third, according to the present invention it is possible to prevent the safety accident caused by the scattering of the water due to the floating of the laundry in advance.

Fourth, according to the present invention it is possible to prevent the washing performance degradation and foam damage due to the lack of water generated when the water is scattered due to the floating of the laundry.

Fifth, according to the present invention it is possible to prevent the waste of water due to the water shortage phenomenon caused by the water is scattered by the floating of the laundry to be resupplied.

Therefore, the present invention provides an advantage of improving the product reliability of the washing machine by the various effects described above.

Claims (5)

delete delete Outcase, A reservoir provided inside the outer case, A washing tank rotatably installed in the reservoir, A driving motor for rotating the washing tank; It is configured to include a detection means provided to detect when the height of the laundry accommodated in the washing tank is more than a predetermined position, The detection means, Floating prevention and provided in the tub cover installed on the top of the reservoir, Washing machine characterized in that it comprises an electrode sensor installed in the floating guard. The method of claim 3, wherein The floating prevention device is a washing machine, characterized in that the mesh structure is installed so as to be located in the falling area of the wash water is supplied to the inside of the washing tank through the water supply port. The method of claim 3, wherein The electrode sensor is a washing machine, characterized in that installed on the outer surface of the floating prevention.

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