KR20070062651A - A dish washer and controlling method of a dish washer - Google Patents

Abstract

A dish washer and a controlling method of the dish washer are provided to easily determine whether the dish washer is in trouble or not by checking washing of dishes through a turbidity display. A dish washer includes a control panel(170). The control panel includes a power button(172), an option key(171), a time display(174), a turbidity display(173), and a turbidity sensor. The power button turns on and off the dish washer. The option key enters options such as a washing course of the dish washer. The time display shows an expected time and a remaining time according to the selected washing course. The turbidity display shows contamination of washing water by measuring voltage measured by a turbidity sensor.

Description

A dish washer and controlling method of a dish washer}

1 is a perspective view showing a typical turbidity sensor.

2 is a cross-sectional view of the dishwasher according to the embodiment of the present invention.

3 is a block diagram illustrating a control configuration of a dish washing machine according to an embodiment of the present invention.

4 illustrates a control panel according to an embodiment of the present invention.

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

The present invention relates to a dishwasher, and more particularly, a dishwasher having a turbidity display unit displaying a turbidity value measured using a turbidity sensor for measuring the degree of contamination of the washing water, and a method of controlling the dishwasher, which can increase the user's trust. It is about.

In general, the dishwasher is a home appliance for cleaning food residues on the surface of the dish by high-pressure washing water sprayed from the spray nozzle.

In detail, the dishwasher includes a tub in which a washing tank is formed and a sump mounted on the bottom of the tub to store washing water. In addition, a detergent inlet for introducing a predetermined amount of detergent is formed in the door, and a predetermined amount of detergent is supplied into the detergent inlet.

In addition, the washing water is moved to the injection nozzle by the pumping action of the washing pump mounted inside the sump, the washing water moved to the injection nozzle is injected at a high pressure through the injection port formed in the injection nozzle end. In addition, the washing water sprayed at a high pressure hits the surface of the tableware, and dirt, such as food residues on the tableware, falls to the bottom of the tub.

In addition, the sump is equipped with a turbidity sensor that can detect the turbidity of the stored wash water, and a predetermined controller detects the contamination of the wash water from the turbidity value measured by the turbidity sensor.

1 is a perspective view showing a general turbidity sensor.

Referring to FIG. 1, the turbidity sensor 10 is disposed to face the sensing region 11 through which the washing water stored in the sump flows, and the sensing region 11 so as to pass light through the sensing region 11. The light emitting unit 12 to emit, and the light receiving unit 13 for receiving the light passing through the detection region (11).

In detail, the turbidity sensor 10 is mounted on the bottom of the sump, and the wash water stored in the sump flows through the sensing region 11.

In addition, the light emitted from the light emitting unit 12 is transmitted to the light receiving unit 13 through the washed water flowing through the detection area (11). When the signal received by the light receiving unit 13 is converted into a predetermined voltage value and the voltage value is low, it is determined that the contamination of the wash water is high.

The washing process of the auto course is performed according to the voltage value measured by the turbidity sensor, that is, the turbidity value.

If the turbidity value is changed while the dishwasher is in operation, the user may determine whether the dishwasher is normally operated by observing the change in the turbidity value.

However, the conventional control panel does not have a separate display unit for the user to check the turbidity value of the wash water, there is an inconvenience that the user can not easily check the process of washing the stored dishes.

The present invention has been proposed to solve the above problems, and an object of the present invention is to propose a dishwasher having a turbidity display unit capable of displaying a turbidity value of the washing water on a control panel and a control method thereof.

In addition, an object of the present invention is to propose a dish washing machine and a method of controlling the same, by allowing the user to confirm that the stored dishes are being washed through a turbidity display unit provided in the control panel. .

In addition, an object of the present invention is to propose a dish washing machine and a method of controlling the same, which may cause a user's interest by displaying the turbidity value of the washing water using a predetermined bar level.

Dishwasher according to an embodiment of the present invention for achieving the above object is a turbidity sensor that can measure the degree of contamination of the washing water to a predetermined voltage value; A control unit for reading the voltage value measured by the turbidity sensor and determining the contamination level of the washing water therefrom; And a turbidity display unit which may display a degree of contamination of the washing water according to a control signal of the controller.

According to another aspect, a method of controlling a dishwasher includes selecting a washing course and an option; Measuring a voltage value of the contamination level of the washing water by a turbidity sensor installed inside the sump; Determining the contamination level of the washing water by the controller using the voltage value measured by the turbidity sensor; And displaying the contamination level of the washing water determined by the control unit on a turbidity display unit formed at one side of the control panel.

By the dishwasher and the control method as proposed, there is an advantage that the turbidity display portion that can display the degree of contamination of the washing water is provided in the control panel, the user can easily check the degree of contamination of the washing water.

In addition, by allowing the user to confirm that the stored dishes are being washed through the turbidity display unit provided in the control panel, there is an advantage in that it is easy to determine whether the washing machine is broken.

In addition, the turbidity value of the washing water is displayed by using a predetermined bar level, which may cause an interest of the user.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail. However, the spirit of the present invention is not limited to the embodiments in which the present invention is presented, and those skilled in the art who understand the spirit of the present invention can easily make other embodiments by adding, changing, deleting, and adding components within the scope of the same idea. It may be suggested, but this will also fall within the scope of the spirit of the present invention.

2 is a cross-sectional view of the dishwasher according to the embodiment of the present invention.

Referring to FIG. 2, the dish washing machine 100 according to the embodiment of the present invention has an outer shape, a tub 110 having a washing tank formed therein, and a door formed on a bottom surface of the tub 110 to open and close the washing tank. 111 and a sump 180 formed at the center of the bottom surface of the tub 110 to store the washing water.

In addition, a control panel 170 is provided at an upper side of the door 111 to input a washing course of the dishwasher and display an operation state of the dishwasher.

In addition, a washing pump 190 connected to the sump 180 and pumping the washing water stored in the sump 180 at a high pressure, and installed at a rear surface of the washing pump 190 to drive the washing pump 190. A washing motor 191 is included.

In addition, one side of the sump 180 is equipped with a turbidity sensor (not shown) capable of measuring the contamination level of the wash water stored in the sump 180, and the turbidity value measured by the turbidity sensor is measured in the control panel. It may be displayed on the turbidity display unit (to be described later) formed at a predetermined position of 170.

 In addition, the water guide 140 and the upper surface of the sump 180, which is a path for moving the washing water pumped from the washing pump 190 is formed on the bottom surface of the washing tank to spray the washing water upwards The lower nozzle 160 is included.

And, attached to the upper portion of the water guide 140, extending from the water guide 140 in the vertical direction is formed on the upper nozzle 150 and the ceiling portion of the tub 110 located in the central portion of the washing tank. It is formed includes a top nozzle 155 for spraying the washing water vertically downward.

In addition, the upper rack 120 is mounted on the upper side of the upper nozzle 150 so that the dishes are washed by the upper nozzle 150, and the lower nozzle 160 so that the dishes are washed by the lower nozzle 160. Lower rack 130 is mounted to the upper side of the) is included.

On the other hand, it will be described below the operation of the dishwasher according to an embodiment of the present invention.

The dishwasher is operated, the washing water is introduced into the sump 180, and the washing water is moved to the water guide 140 by the pressure pumped by the washing pump 191.

Then, the washing water is sprayed at high pressure through the spray nozzles 150, 155, and 160 connected to the water guide 140, and washing of the stored dishes is performed.

In addition, the contamination degree, that is, the turbidity value of the washing water is measured by the turbidity sensor provided at one side of the sump 180, and a predetermined control unit reads it and displays it on the turbidity display unit formed in the control panel 170.

3 is a block diagram illustrating a control configuration of a dish washing machine according to an embodiment of the present invention.

Referring to FIG. 3, a dishwasher according to an embodiment of the present invention has a turbidity sensor 210 and a turbidity sensor 210 mounted on one side of a sump to measure a predetermined voltage value of a degree of contamination of wash water. The control unit 200 reads the turbidity of the wash water measured through the control unit 200 to display a predetermined turbidity level, and a turbidity display unit 173 in which the turbidity value measured by the turbidity sensor 210 is displayed.

The memory unit 220 further includes a contamination level information of the washing water with respect to the voltage value measured by the turbidity sensor 210.

In detail, the controller 200 reads a predetermined voltage value measured from the turbidity sensor 210 and displays it on the turbidity display unit 173. In addition, the contamination level of the washing water may be displayed on the turbidity display unit 173 simultaneously with the operation of the dishwasher.

In addition, the turbidity display unit 173 may be a predetermined bar level or a liquid crystal display so that a user can easily grasp the contamination of the wash water stored in the sump.

In this case, the controller 200 may control the number of bar levels displayed on the turbidity display unit 173 to be distinguished according to the voltage value measured by the turbidity sensor 210. As the washing water becomes clearer, the user can easily confirm that the dishwasher is operating normally.

To this end, the memory unit 220 may store the contamination degree of the wash water with respect to the voltage value measured by the turbidity sensor 210, and information about the number of levels partitioned in a predetermined section.

4 is a view for explaining a control panel according to an embodiment of the present invention.

Referring to FIG. 4, the control panel 170 according to the embodiment of the present invention may input a power button 172 for turning the power of the dishwasher ON / OFF and a washing course of the dishwasher. It includes an option key 171, a time display unit 174 to display the estimated time and the remaining time according to the selected washing course, and turbidity display unit 173 to display the degree of contamination of the wash water.

In detail, the turbidity display unit 173 may include a plurality of bar levels. In this case, the turbidity display unit 173 may include a light emitting device such as an LED.

The turbidity display unit 173 may be displayed differently according to the voltage value measured by the turbidity sensor 210. For example, as the voltage value measured from the turbidity sensor 210 is lower, the number of bar levels displayed on the turbidity display unit 173 decreases, and as the voltage value measured from the turbidity sensor 210 is higher, The number of bar levels displayed on the turbidity display unit 173 increases.

Therefore, as the number of bar levels displayed on the turbidity display unit 173 increases, this indicates that the washing operation is normally performed.

In this case, the number of bar levels for the voltage value is stored in the memory unit 220, and the control unit 200 reads the number of bar levels.

In the above-described embodiment of the present invention, the turbidity display unit 173 has been described as having a bar level. However, it is a matter of course that the contamination of the washing water may be output by a display such as an LCD or a notification sound.

5 is a flowchart illustrating a control method of the dish washing machine according to an embodiment of the present invention.

First, a user inputs a washing course and an option by operating a power button 172 and an option key 171 formed on the control panel 170 (S100).

Then, when the dishwasher is operated according to the selected washing course and option, the washing water flows into the sump 180, and the washing stroke is performed to wash the stored dishes while the washing water is pumped by the washing pump 190 at a high pressure. do.

In this case, the contamination level (that is, turbidity) of the washing water is measured by the turbidity sensor 210 provided on one side of the sump 180 (S110), and the control unit 200 by the turbidity sensor 210. A corresponding section is set among predetermined level sections from the measured voltage value (S120).

In addition, the control unit 200 causes the light to be turned on at a level corresponding to the voltage value measured by the turbidity sensor 210 among predetermined levels of the turbidity display unit 173 (S130).

For example, when the voltage value measured by the turbidity sensor 210 is less than A mV, the controller 200 may turn on only one of the bar levels of the turbidity display unit 173.

In addition, the controller 200 continuously determines whether the operation of the dishwasher is stopped (S140), and when the operation of the dishwasher is stopped, causes the light of the turbidity display unit 173 to blink (S150).

However, while the dishwasher continues to operate, the controller 200 may continuously display the contamination level of the washing water measured by the turbidity sensor 210 through the turbidity display unit 173.

According to the embodiment of the present invention as described above, the user can confirm that the washing water is gradually cleaned by the operation of the dishwasher. From this, the user can determine whether the dishwasher is operating normally, and thus easily determine whether the dishwasher is broken. You can see the effect.

By the dishwasher and the control method as proposed, there is an advantage that the turbidity display portion that can display the degree of contamination of the washing water is provided in the control panel, the user can easily check the degree of contamination of the washing water.

In addition, by allowing the user to confirm that the stored dishes are being washed through the turbidity display unit provided in the control panel, there is an advantage in that it is easy to determine whether the washing machine is broken.

In addition, the turbidity value of the washing water is displayed by using a predetermined bar level, which may cause an interest of the user.

Claims (4)

A turbidity sensor capable of measuring the degree of contamination of the washing water at a predetermined voltage value; A control unit for reading the voltage value measured by the turbidity sensor and determining the contamination level of the washing water therefrom; And And a turbidity display unit that can display a degree of contamination of the washing water according to a control signal of the controller. The method of claim 1, The turbidity display is formed on one side of the control panel, dishwasher, characterized in that the contamination level of the washing water is displayed by a predetermined bar level. A washing course and an option are selected; Measuring a voltage value of the contamination level of the washing water by a turbidity sensor installed inside the sump; Determining the contamination level of the washing water by the controller using the voltage value measured by the turbidity sensor; And And displaying the contamination level of the washing water determined by the control unit on a turbidity display unit formed on one side of the control panel. The method of claim 3, wherein In the step of displaying the contamination level of the washing water in the turbidity display unit, the number of levels displayed on the turbidity display unit decreases as the pollution degree increases.

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