KR20170046252A - Dish washer system and method of controlling the same - Google Patents

Dish washer system and method of controlling the same Download PDF

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Publication number
KR20170046252A
KR20170046252A KR1020150146315A KR20150146315A KR20170046252A KR 20170046252 A KR20170046252 A KR 20170046252A KR 1020150146315 A KR1020150146315 A KR 1020150146315A KR 20150146315 A KR20150146315 A KR 20150146315A KR 20170046252 A KR20170046252 A KR 20170046252A
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KR
South Korea
Prior art keywords
water level
rinsing
water
washing
pressure sensor
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KR1020150146315A
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Korean (ko)
Inventor
김호성
이호수
장재영
손정석
Original Assignee
린나이코리아 주식회사
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Priority to KR1020150146315A priority Critical patent/KR20170046252A/en
Publication of KR20170046252A publication Critical patent/KR20170046252A/en

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4244—Water-level measuring or regulating arrangements
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber

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  • Washing And Drying Of Tableware (AREA)

Abstract

A dishwasher system and control are disclosed. The present invention is characterized in that a pressure sensor is installed in a tank for detecting the level of a tank containing wash water and rinse water, and the control unit judges the detected water level, and the control unit includes a pressure input unit for receiving the water level pressure from the pressure sensor; And a water level and water determination unit for counting the set water level determined when the measured water level value specified by the pressure sensor is within the water level determination range and determining the water level when the water level value is measured within the water level determination range for the determined time, And the water level detection can be detected at various points, thereby performing wide control in water use.

Description

DISCHARGE SYSTEM AND METHOD OF CONTROLLING THE SAME [0002]

More specifically, the present invention relates to a dishwasher system and a control method thereof, and more particularly, to a dishwasher system and a control method thereof, To a dishwasher system and a control method thereof.

In the dishwasher, the system is designed to separately prepare washing water and rinse water so that the dishwashing and rinsing can be performed, and then sequentially perform the functions from washing to rinsing to wash the dishes.

The wash water is stored through the wash water tank and the rinse water is stored through the rinse water tank. The washing water tank and the rinse water tank each have a dedicated line connected to the washing room. The washing line includes a washing pump and the rinse line has a rinse pump. An electrode rod is provided to determine the level of the rinse water tank and the washing water tank. The water level is detected, and the rinsing pump and the rinsing pump are operated, and water is sent to the rinsing chamber to perform the rinsing and rinsing course operation.

On the other hand, when a combustor is used to remove scaling problems and minerals in a dishwasher, a conventional electrode used for detecting the level in the tank normally does not flow current through the combustor, There is also a problem that the cleaning is inconvenient due to exposure of the electrode.

In addition, since it is possible to determine only the high water level and the low water level, various controls using various water levels are not easy, and the water level detection itself may not be normally performed depending on the water components.

Korean Patent Laid-Open No. 10-2007-0078117 discloses a method of detecting the water level by using a water quantity sensor and a pressure sensor in parallel. However, the method is difficult to implement and the configuration is complicated.

Patent Document 1: Korean Patent Laid-Open Publication No. 10-2007-0078117

Patent Document 2: Korean Patent Laid-Open Publication No. 10-2005-0105707

Patent Document 3: Korean Patent Publication No. 10-2005-0102456

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problem of not being able to detect a water level when a combustor is used and the problem of inability to detect a water level according to a water component.

Another object of the present invention is to correct the level of the water level by using the output value of the pressure sensor.

Another object of the present invention is to enable various controls using various levels in the level detection of a dishwasher.

Still another object of the present invention is to detect the configuration of the apparatus for detecting the water level in a simple and reliable manner without complication.

It is another object of the present invention to solve the inconvenience of cleaning due to the exposure of the electrode used for detecting the water level.

According to the present invention, there is provided a dishwasher system for washing a dishwasher by spraying washing water and rinsing water through a pump to a washing tank, the dishwasher system comprising: a tank containing the washing water and the rinse water; A pressure sensor installed in the tank for detecting the level of the tank; And a control unit for determining a water level detected by the pressure sensor, wherein the control unit comprises: a pressure input unit for receiving a water level pressure from the pressure sensor; And a water level and quantity determiner for counting the set time determined when the measured water level value specified by the pressure sensor is within the water level definite range and fixing the water level when the water level value is measured within the water level determined range for the determined time Lt; / RTI >

Further, according to the embodiment of the present invention, the control unit determines the water level by converting the quantity in the tank into a frequency value.

Further, according to the embodiment of the present invention, the control unit further includes a heatable water level judging unit for turning on the heater when detecting the water level which can be heated in the tank and shortening the heating time of the water.

According to an embodiment of the present invention, when the water level of the tank becomes equal to or higher than the middle water level, the controller starts heating by turning on the heating device in accordance with the control command of the water level judging unit, The pump is operated according to the control command of the determination unit.

According to the present invention, it is possible to detect whether the rinsing water level in the rinsing tank is in the middle water level through the pressure sensor, and if the rinsing water level is fixed to the middle water level, it is detected whether the rinsing water level is high. A washing preparation step of detecting whether the washing water level in the washing tank is a middle water level and detecting whether the washing water level is a high water level when the washing water level is fixed to the middle water level; Cleaning the dishwasher by operating the washing pump for a set time when the rinsing water level and the washing water level are determined to be high through the cleaning preparation step; And a rinsing step of operating the rinsing pump for set time to perform rinsing of the tableware.

According to the embodiment of the present invention, in the cleaning preparation step, the rinsing water level input value is detected at the rinsing water level when the water level detection value range of the pressure sensor and the water level detection confirmation elapsed time is 2 to 4 seconds, The water level can be controlled by detecting the rinse water level at a high level when the value is within the range of the water level detection value of the pressure sensor and the elapsed time of the water level detection determination is 2 to 4 seconds.

According to the embodiment of the present invention, in the cleaning preparation step, the washing water level is detected at the middle water level when the washing water level input value is within the water level detection value range of the pressure sensor and the water level detection confirmation elapsed time is 2 to 4 seconds, When the value is in the water level detection range and the water level detection determination elapsed time is 2 to 4 seconds, the washing water level can be detected at a high water level and the operation of the rinsing pump can be controlled.

According to the embodiment of the present invention, in the cleaning preparation step, the rinsing water heating device is turned on when the rinsing water level is detected and fixed to the middle water level. And

And turning on the washing water heating device when the washing water level is detected and fixed to the middle water level.

The present invention has an effect of solving the problem that the level of the water level is not properly detected when the combustor is used and the problem of the inability to detect the water level by the water component by means of the pressure sensor.

Further, according to the present invention, it is possible to detect an accurate level of the water level of the tank and a level of the detection of the water level using the output value of the pressure sensor at various points, so that various and wide control is performed in the water use of the dishwasher.

Further, the present invention has the effect of detecting the apparatus configuration for detecting the tank level of the dishwasher in a simple and reliable manner without complicated.

1 is a schematic view of a dishwasher system according to an embodiment of the present invention.
2 is a block diagram relating to the detection and control of the rinse water tank level of the dishwasher system according to the embodiment of the present invention.
3 is a block diagram relating to the detection and control of the level of the washing water tank in the dishwasher system according to the embodiment of the present invention.
4 is a flow chart illustrating an example of a dishwasher system control routine according to an embodiment of the present invention.

The present invention detects a washing water and a rinse water level of a dishwasher through a pressure sensor and counts the set time when the designated measured water level value is within the water level definite range and determines the water level when the water level value is measured within the determined water level range within the determined time This allows accurate detection of the water level.

Since the water level can be detected by the pressure sensor, it is possible to determine the operation timing of the heating device necessary for efficient operation of the dishwasher with the water level detection value, thereby shortening the heating time of the rinsing water and the washing water.

The present invention is simpler and simpler in construction than the conventional level detecting method using a pressure sensor.

As the pressure sensor, for example, a surface acoustic wave pressure sensor or the like capable of measuring a water level by measuring a change in frequency of an oscillation frequency varying with a change in water level pressure can be used. But is not limited thereto.

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

1 is a flow diagram of a dishwasher system. As shown in FIG. 1, the dishwasher is designed to wash dishes by washing and rinsing the dishwasher 110, and supplies the cold and hot water for dishwashing, pump control, washing and rinsing water supply and heating, Drainage control or the like is controlled by temperature, level detection, or the like.

The rinsing nozzles 120 and 130 and the cleaning nozzles 121 and 131 are positioned on the upper and lower sides of the cleaning tank 110, respectively. The water supplied to the rinsing nozzle and the cleaning nozzle is divided into a rinsing water and a washing water and the water stored in the rinsing water tank 210 and the washing water tank 220 is pumped through the rinsing pump 231 and the washing pump 232 And supplied to the washing tank.

The pipeline is divided into a rinsing water pipe and a rinsing water pipe. A rinsing pump 231 is installed in the rinsing water pipe and a rinsing pump 232 is installed in the rinsing water pipe to supply rinsing water and washing water necessary for rinsing and washing. .

The cold water (direct water) supplied through the water supply side 250 is supplied to the rinse water tank 210, and the cold water supplied is pumped through the circulation pump 230 and circulated through the heat exchanger 240. The water in the rinse water tank 210 and the washing water tank 220 can be used by heating through the heating device 400.

2 is a block diagram relating to the detection and control of the rinse water tank level of the dishwasher system according to the embodiment of the present invention.

2, the rinsing water level contained in the rinsing water tank 210 is detected by the pressure sensor 300. The detection value of the rinsing water level is input to the control unit 310, 231 and the power of the heating device 400 are turned on / off.

3 is a block diagram relating to the detection and control of the level of the washing water tank in the dishwasher system according to the embodiment of the present invention.

3, the level of the wash water contained in the wash water tank 220 is detected by the pressure sensor 300. The detected level of the wash water is input to the control unit 310, and the wash pump 232 And the power of the heating and heating apparatus 400 is turned on / off.

As shown in FIGS. 2 and 3, the control unit 310 commonly includes a water level pressure input unit 320 for receiving the water level pressure from the pressure sensor 300, a counter A water level determining unit 340 for counting the set time determined when the measured water level value specified by the pressure sensor 300 is within the water level definite range and determining the water level when the water level value is measured within the water level determined range during the determined time, And a heatable water level determiner 350 for determining whether the water level detected by the water level and water quantity determiner 340 is a heatable water level and turning on / off the power of the heating device 400.

The water level and quantity determination unit 340 detects and determines the level and the quantity of the rinsing water tank 210 and the washing water tank 220 to control the operation of the rinsing pump 231 and the cleaning pump 232.

The heating water level judging unit 350 includes a heating device 400 including a heater or a burner for heating water in the rinse water tank 210 and a heating device 400 such as a heater for heating water in the washing water tank 220 400 is controlled.

The control unit 310 determines the present level of water in the tank by converting the rinsing water and the water in the washing tanks 210 and 220 into frequency values of the oscillation frequency of the pressure sensor 300, 350 to turn on the heating device 400 to shorten the heating time of the water when the rinsing water and the water level in the washing tanks 210, 220 are detected.

When the water level of the tank becomes equal to or higher than the middle water level, the control unit 310 turns on the heating device 400 according to the control command of the water level control unit 350 to start heating. The rinsing pump 231 or the cleaning pump 232 is operated in accordance with the control command of the quantity determination unit 340.

4 is a flow chart illustrating an example of a dishwasher system control routine according to an embodiment of the present invention.

The dishwasher control method according to the embodiment of the present invention detects whether the level of the rinsing water in the rinsing tank 210 is in the middle level through the pressure sensor 300 in the cleaning preparation step S100, It is detected whether the wash water level in the washing tank 220 is a middle water level through the detection pressure sensor 300. If the washing water level is determined to be the middle water level, it is detected whether the washing water level is high or not .

In the washing step S200, if the rinsing water level and the washing water level are determined to be at a high water level through the washing preparation step S100, the washing pump 232 is operated for the set time to perform the dish washing.

In the rinsing step (S300), the rinsing pump 231 is operated for the set time to perform the rinsing of the dishes.

In the cleaning preparation step (S100), whether the rinsing water level input value and the range of the water level detection value of the pressure sensor are confirmed, and when the water level detection determination time is 2 to 4 seconds, it can be detected as the middle water level of the rinsing water. Similarly, the high-level detection of the rinsing water confirms whether the rinsing water level input value is within the range of the water level detection value of the pressure sensor, and when the water level detection determination time is 2 to 4 seconds, the rinsing water level is detected as the high water level, Shut off the water supply.

In the cleaning preparation step (S100), it is confirmed whether the input value of the cleaning water level is within the range of the water level detection value of the pressure sensor, and when the water level detection determination time is 2 to 4 seconds, the cleaning water level is detected as the middle water level, And the operation of the rinsing pump 232 is controlled by detecting the rinsing water level at a high water level when the water level detection determination time is 2 to 4 seconds.

Determination of the level of the rinse water level and the washing water level The elapsed time 2 to 4 seconds is the minimum time required to determine the current water level by dividing the fluctuating water level into the middle water level and the high water level. If it is less than 2 seconds, it is not enough to detect the water level, and if it exceeds 4 seconds, the water level change may miss the water level determination timing.

In the cleaning preparation step S100, when the rinsing water level is detected and fixed, the rinsing water heating device 400 is turned on. When the cleaning water level is detected and determined as the middle water level, the cleaning water heating device 400 is turned on .

The control procedure of the dishwasher according to the embodiment of the present invention will be described with reference to FIG.

First, in the cleaning preparation step (S100), the operation of the dishwasher is performed by turning on the power of the dishwasher (S110). First, it is detected whether the rinse water has a middle water level (S111). For example, when the input value of the rinsing water level is in the frequency range of 20.6 KHz to 24 KHz, which is the water level detection value of the pressure sensor, and the water level detection confirmation elapsed time is 2 seconds, the water level in the rinsing water can be detected.

If it is detected that the rinsing water is in the middle level, the heating device 400 of the rinsing tank 210 may be turned ON to start heating the rinsing water (S113).

When the rinsing water level input value is in the range of 19 KHz to 20.6 KHz, and the water level detection completion time is 2 seconds, the rinsing water level is detected as the high water level (S114). Here, if the water level is not higher than the high water level and the water level is reached, the water level may be closed to stop water supply (S112).

If it is detected that the rinsing water level is a high water level, it is detected whether the water level in the wash water is a middle water level (S115). For example, when the input value of the wash water level is within the range of the water level detection value of the pressure sensor of 21 KHz to 24.3 KHz, and the water level detection determination elapsed time is 2 seconds, the wash water level can be detected as the middle water level.

If it is detected that the washing water is a middle water level, heating of the washing water can be started by turning on the heating device 400 of the washing tank 220 (S116).

Continuously, the wash water level is detected as a high water level when the wash water level input value is within the range of the water level detection value of the pressure sensor of 19 KHz to 21 KHz and the water level detection determination elapsed time is 2 seconds (S117). If the water level does not reach the high water level, the rinsing pump is operated to continue the water supply, or if it is determined that the water level has reached the high water level, it is determined that the cleaning preparation is completed (S119).

If it is determined that the cleaning preparation is completed, the cleaning operation is performed by operating the cleaning pump for a set time in the door closed state after confirming the open state of the door (S210 to S220).

When the operation time of the cleaning pump has elapsed, a rinsing step is performed to operate the rinsing pump for a predetermined time, and when the operation time of the rinsing pump has elapsed, it is controlled to wait in the initial mode after the drainage (S310).

According to the embodiment of the present invention, when the set water level is within the water level definite range, the set water level is counted and the water level can be determined when the water level value is measured within the set water level range during the set time, It is possible to increase the accuracy of the level detection and reduce errors in the level detection.

Further, since the water level in the tank can be detected from the low water level to the high water level, if the water level is detected above the heating level, the heating device can be operated to reduce the heating time of the rinse water and the washing water.

In addition, the range of detection of the water level becomes various, and there are various ways to control it. When the dishwasher is turned on, the number of rinsing water or washing water is recognized as a pressure value through the pressure sensor. The control unit determines the water level through the pressure value.

The procedure for determining the water level is to count the set time that has been set when the specified measured water level is within the water level definite range and to confirm the water level when the water level value is measured within the water level definite range during the set time.

Various controls can be performed through the determined level using the pressure sensor. When the temperature is above the water level (above the water level) where heating is possible, the heating device is turned on and heating is started. If the temperature exceeds the water level (above the water level) at which the pump can operate, have.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of illustration, .

110: Washing tank 120.130: Rinse nozzle
121.131: Cleaning nozzle 130.131: Cleaning nozzle
210: rinse water tank 220: wash water tank
230: Circulation pump 231: Rinse pump
232: Cleaning pump 240: Heat exchanger
250: Water supply side 300: Pressure sensor
310: control unit 320: water level pressure input unit
330: counter unit 340: water level and quantity determination unit
350: Heating level judging unit 400: Heating device

Claims (8)

1. A dishwasher system for washing a dishwasher by washing and rinsing the dishwasher by spraying washing water and rinsing water through a pump,
A tank in which the washing water and the rinse water are contained; A pressure sensor installed in the tank for detecting the level of the tank; And a controller for determining a water level detected by the pressure sensor,
The control unit may include: a pressure input unit receiving a pressure level from the pressure sensor;
And a water level and quantity determination unit for counting a set time that is set when the measured water level value specified by the pressure sensor is within the water level definite range, and to determine a water level when the water level value is measured within the water level determination range for the determined time. The method according to claim 1,
Wherein the control unit converts the quantity in the tank into a frequency value to determine a water level. The method according to claim 1,
Wherein the controller further comprises a heatable water level judging unit for turning on the heater when detecting the water level in the tank and shortening the heating time of the water. The method according to claim 1,
The control unit turns on the heating device by turning on the heating device according to the control command of the heating water level judging unit to start heating when the water level of the tank becomes the middle water level or more, Dishwasher system to operate. And whether the rinsing water level is at a high water level is detected when the rinsing water level is determined to be a middle water level, and whether the rinsing water level in the rinsing tank is a middle water level is detected through the pressure sensor A washing preparation step of detecting whether the washing water level is high or not when the washing water level is fixed to the middle water level;
Cleaning the dishwasher by operating the washing pump for a set time when the rinsing water level and the washing water level are determined to be high through the cleaning preparation step; And
And a rinsing step of operating the rinsing pump for set time to perform rinsing of the tableware. 6. The method of claim 5,
In the cleaning preparation step, the rinse water level input value is detected to be the rinse water level when the water level detection value range of the pressure sensor and the water level detection confirmation elapsed time is 2 to 4 seconds,
Wherein the rinsing water level input value is in the range of the pressure sensor level value, and the water level detection confirmation elapsed time is 2 to 4 seconds, the rinsing water level is detected at a high water level to control the water supply. 6. The method of claim 5,
In the cleaning preparation step, the cleaning water level is detected as a middle water level when the input value of the cleaning water level is within the range of the water level detection value of the pressure sensor, and the elapsed time of the water level detection determination is 2 to 4 seconds,
A dishwasher control method for controlling the operation of a rinsing pump by detecting a rinsing water level at a high level when the rinsing water level input value is within the range of the water level detection value of the pressure sensor and the elapsed time of the water level detection determination is 2 to 4 seconds. 9. The method according to any one of claims 5 to 8,
Turning on the rinsing water heating device when the rinsing water level is detected and determined as a middle water level in the cleaning preparation step; And
And turning on the washing water heating device when the washing water level is detected and fixed to the middle water level.
KR1020150146315A 2015-10-20 2015-10-20 Dish washer system and method of controlling the same KR20170046252A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019201408A1 (en) * 2018-04-19 2019-10-24 Diehl Ako Stiftung & Co. Kg Electronic domestic appliance
CN111714052A (en) * 2019-03-22 2020-09-29 青岛海尔洗碗机有限公司 Dish washing machine and water inlet control method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019201408A1 (en) * 2018-04-19 2019-10-24 Diehl Ako Stiftung & Co. Kg Electronic domestic appliance
CN111714052A (en) * 2019-03-22 2020-09-29 青岛海尔洗碗机有限公司 Dish washing machine and water inlet control method thereof

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