KR20170081477A - Dishwasher and Control Method of the dish washer - Google Patents

Dishwasher and Control Method of the dish washer Download PDF

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Publication number
KR20170081477A
KR20170081477A KR1020160000564A KR20160000564A KR20170081477A KR 20170081477 A KR20170081477 A KR 20170081477A KR 1020160000564 A KR1020160000564 A KR 1020160000564A KR 20160000564 A KR20160000564 A KR 20160000564A KR 20170081477 A KR20170081477 A KR 20170081477A
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South Korea
Prior art keywords
steam
step
water
rinsing
supplying
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KR1020160000564A
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Korean (ko)
Inventor
김승훈
우상우
김일환
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엘지전자 주식회사
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Priority to KR1020160000564A priority Critical patent/KR20170081477A/en
Publication of KR20170081477A publication Critical patent/KR20170081477A/en

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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/14Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0018Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0018Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0047Energy or water consumption, e.g. by saving energy or water
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0002Washing processes, i.e. machine working principles characterised by phases or operational steps
    • A47L15/0005Rinsing phases, e.g. pre-rinsing, intermediate rinsing, final rinsing
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0002Washing processes, i.e. machine working principles characterised by phases or operational steps
    • A47L15/0007Washing phases
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0002Washing processes, i.e. machine working principles characterised by phases or operational steps
    • A47L15/0013Drying phases, including dripping-off phases
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0002Washing processes, i.e. machine working principles characterised by phases or operational steps
    • A47L15/0015Washing processes, i.e. machine working principles characterised by phases or operational steps other treatment phases, e.g. steam or sterilizing phase
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0018Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0021Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0018Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0021Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • A47L15/0026Rinsing phases
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0018Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0021Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • A47L15/0028Washing phases
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0018Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0021Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • A47L15/0034Drying phases, including dripping-off phases
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0018Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0021Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • A47L15/0036Steam or sterilizing phases
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4214Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225Arrangements or adaption of recirculation or discharge pumps
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4234Steam generating arrangements
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4285Water-heater arrangements
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4293Arrangements for programme selection, e.g. control panels; Indication of the selected programme, programme progress or other parameters of the programme, e.g. by using display panels
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/48Drying arrangements
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/48Drying arrangements
    • A47L15/481Drying arrangements by using water absorbent materials, e.g. Zeolith
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/48Drying arrangements
    • A47L15/485Drying arrangements by using alternative heat sources, e.g. microwave or infrared
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4251Details of the casing
    • A47L15/4257Details of the loading door
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2301/00Manual input in controlling methods of washing or rinsing machines for crockery or tableware, i.e. information entered by a user
    • A47L2301/04Operation mode, e.g. delicate washing, economy washing, reduced time, sterilizing, water softener regenerating, odor eliminating or service
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2301/00Manual input in controlling methods of washing or rinsing machines for crockery or tableware, i.e. information entered by a user
    • A47L2301/08Other manual input
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/14Steam generators
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2601/00Washing methods characterised by the use of a particular treatment
    • A47L2601/04Steam

Abstract

The present invention relates to a washing machine, comprising: a rinse cycle in which washing water is sprayed to a washing subject to be rinsed; A steam drying step of supplying steam to the object to be cleaned and drying the steam; A rinsing water supply step of supplying a rinsing water to the sump; and a rinsing water supply step of operating the pump to spray the rinsing water to the spray gun, And a rinsing water drainage step of draining the rinse water from the sump, wherein the steam drying step includes a dry steam water supply step of supplying dry steam water to dry the object to be cleaned, And a drying steam supply step of supplying the steam to the steam generator, wherein a level of the steam water supplied in the drying steam water supplying step is provided below the steam discharging opening provided in the pump to discharge the steam .

Description

[0001] Dishwasher and Control Method of Dishwasher [

The present invention relates to a dishwasher and a method of controlling the dishwasher.

The dishwasher is a household appliance that removes foreign matter remaining on the object to be cleaned by spraying washing water on the object to be cleaned.

The conventional dishwasher includes a tub provided with a washing space, a rack provided in the tub for receiving a washing object, a spraying arm for spraying washing water into the rack, a sump for storing washing water, and washing water stored in the sump, It is common to include a pump for supplying the water.

Conventionally, the dishwasher has been capable of washing and sterilizing the object to be cleaned by heating the washing water, washing the object to be cleaned using the heated washing water, or supplying steam to the object to be cleaned.

The conventional dishwasher generally generates hot water by heating the washing water stored in the sump through a heater provided inside the sump for heating the washing water. Alternatively, a separate steam generator is provided to generate steam to generate steam.

The conventional dishwasher has a steam nozzle on the side of the tub to supply steam to the inside of the tub, and a steam hose is connected between the steam nozzle and the steam generator. In this case, there is a problem that the front surface of the object to be cleaned can not be exposed to steam only by the steam provided on the side of the tub.

In addition, there has been a problem that steam is supplied only to cleaning objects provided on both sides of the rack, and steam is not supplied to cleaning objects provided at the center of the rack.

Further, since the steam is supplied only from the side of the tub, there is a problem that the temperature distribution in the washing space inside the tub is uneven.

In addition, the algorithm of the conventional dishwasher performs a final rinsing cycle after the rinsing cycle is completed, and in the final rinsing cycle, the temperature of the food is raised by spraying hotly heated rinsing water through the spraying rock. However, there is a problem in that the amount of hot-heated rinse water supplied in the final rinse cycle is increased.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a dishwasher and a dishwasher control method capable of supplying steam to a washing object provided at the front or rear of a rack.

Another object of the present invention is to provide a dishwasher and a dishwasher control method which do not require the use of a large amount of water to dry the object to be cleaned.

Another object of the present invention is to provide a dishwasher and a dishwasher control method for supplying steam to dry a subject to be cleaned.

Another object of the present invention is to provide a dishwasher and a dishwasher control method which can supply foreign substances to the object to be cleaned by supplying steam.

It is another object of the present invention to provide a dishwasher and a dishwasher control method capable of removing only a large amount of foreign substances by supplying only washing water not containing detergent.

It is another object of the present invention to provide a dishwasher and a dishwasher control method that can prevent overheating of a heater and reduce energy using residual heat of the heater.

Another object of the present invention is to provide a dishwasher and a dishwasher control method capable of reducing the amount of water required for washing an object to be cleaned and shortening the washing time.

It is another object of the present invention to provide a dishwasher and a method for controlling the dishwasher which can prevent a pump heater from being damaged by a foreign substance inside the pump.

Another object of the present invention is to provide a dishwasher and a method for controlling the dishwasher, which are capable of cleaning a dishwasher which is not used for a long period of time.

In order to solve the above problems, the present invention provides a washing machine comprising: a rinse cycle in which washing water is sprayed to a washing object to be rinsed; A steam drying step of supplying steam to the object to be cleaned and drying the steam; A rinsing water supply step of supplying a rinsing water to the sump; and a rinsing water supply step of operating the pump to spray the rinsing water to the spray gun, And a rinsing water drainage step of draining the rinse water from the sump, wherein the steam drying step includes a dry steam water supply step of supplying dry steam water to dry the object to be cleaned, And a steam supply step of supplying the steam to the steam generator, wherein a level of the steam water supplied in the drying steam water supply step is provided under the steam outlet provided in the pump and discharging the steam.

The present invention is characterized in that, prior to the rinsing cycle, a preliminary washing cycle is performed in which washing water not mixed with detergent is supplied to a washing object to wash the washing object, a main washing cycle in which washing water mixed with detergent is supplied to the washing object, The present invention can provide a control method of a dishwasher including the dishwasher.

Further, the present invention includes a course / option selection step of selecting one of preset predetermined courses capable of cleaning the object to be cleaned, or additionally supplying steam to the selected course, wherein the steam / Is selected, the rinsing cycle, the steam drying cycle, and the general drying cycle are performed.

Wherein the rinsing step comprises a first rinsing step of injecting rinsing water at a first predetermined temperature for a first predetermined time through the top arm, and a second rinsing step of, after the first rinsing step, And a second rinsing step of spraying the rinsing water at a predetermined temperature, wherein the first predetermined time is shorter than the second predetermined time.

On the other hand, it may include a rinsing water heating step of heating the pump heater in the second rinsing step.

The method may further include a third rinsing step of spraying the rinsing water at a third predetermined temperature for a third predetermined time after the second rinsing step through the top arm.

One example of the general drying process may include a first drying step of opening the door to discharge the steam inside the tub to the outside or discharging the steam inside the tub to the outside through the exhaust duct.

Alternatively, the dishwasher includes a circulation duct for circulating air in the tub, which communicates with the tub, and a dehumidifying device provided in the circulation duct. Another example of the general drying cycle includes circulating humid air in the tub through the circulation And a second drying step in which the moisture is removed by the dehumidifying device, while circulating through the duct.

The present invention further provides a method of controlling a dishwasher, characterized by further comprising a course / option selection step of selecting an option to select a course or to additionally supply steam to the selected course.

When the steam refresh course is selected in the course / option selection step, the steamless fish course is performed by a rinsing stroke, a steam drying stroke, and a general drying stroke.

The drying steam supply step may include a first water supply step of supplying wash water to the sump to clean the sump and the pump, and a first drain step of draining the supplied wash water.

In this case, before the first drainage step, a first circulation step may be further performed by driving the pump to circulate the sump and the wash water in the pump to clean the sump and the pump.

Alternatively, the first drainage step may include draining all of the wash water supplied in the first water supply step, and a second water supply step of supplying steam water for generating steam to the sump after the first drainage step .

Alternatively, the first drainage step drains only a part of the wash water supplied in the first water supply step, and steam is generated using the remaining wash water.

The present invention provides a dishwasher and a dishwasher control method capable of supplying steam to a washing object provided at the front or rear of a rack.

The present invention also provides a dishwasher and a dishwasher control method that do not require a large amount of water to dry the object to be cleaned.

The present invention also provides a dishwasher and a dishwasher control method for supplying steam to dry a subject to be cleaned.

The present invention also provides a method of controlling a dishwasher and a dishwasher that can supply foreign substances to a subject to be cleaned by supplying steam.

In addition, the present invention provides a dishwasher and a dishwasher control method capable of removing large foreign substances by supplying only washing water not containing detergent.

The present invention also provides a dishwasher and a dishwasher control method that can prevent overheating of a heater and reduce energy using residual heat of the heater.

The present invention also provides a dishwasher and a method for controlling the dishwasher, which can reduce the amount of water required for washing a subject to be cleaned and shorten the time for washing.

The present invention also provides a dishwasher and a method for controlling the dishwasher, which can prevent the pump heater from being damaged by a foreign substance inside the pump.

In addition, the present invention provides a dishwasher and a dishwasher control method that can clean a dishwasher which is not used for a long time and has accumulated dust.

1 is a perspective view of an example of a dishwasher of the present invention.
2 is a sectional view of an example of the dishwasher of the present invention.
3 is a sequence block diagram of a method of controlling a dishwasher according to an embodiment of the present invention.
FIG. 4 is a sequence block diagram illustrating a method of supplying steam water for steam generation in the method of controlling a dishwasher according to an embodiment of the present invention. Referring to FIG.
5 is a sequence block diagram of a steam refresh course in a control method of a dishwasher according to another embodiment of the present invention.
6 shows an embodiment of various courses and options of the method of controlling a dishwasher of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that both the foregoing description and the following detailed description are exemplary and explanatory only and are not restrictive of the scope of the invention, .

Unless defined otherwise, all terms herein are the same as the general meaning of the term as understood by one of ordinary skill in the art, and if the terms used herein conflict with the general meaning of the term, the definitions used herein .

The present invention relates to a dishwasher capable of spraying steam on the front or rear surface of a tub. 1 is a perspective view of an example of a dishwasher of the present invention. 2 is a sectional view of an example of the dishwasher of the present invention.

1 and 2, the dishwasher 100 includes a cabinet 1, a tub 2 provided inside the cabinet 1 to receive an object to be cleaned, And a door 13 for opening and closing the opening 11. The sludge 711 and the sludge 713 are supplied to the sump 713 and the sump 713,

The cabinet 1 has an opening 11 at one side and an opening 11 communicating with the inside of the tub 2.

The tub 2 is provided with a washing space 21 therein and a rack accommodated in the washing space 21 may be provided. The rack may be provided with an upper rack 23 provided in an upper region of the tub and a lower rack 25 provided below the upper rack 23.

Since the tub 2 is opened and closed by the door 13 provided on one side of the cabinet, the user opens the door 13 to open the tub 2 and then the upper rack 23 or the lower rack 25, Can be pulled out from the tub 2 forward.

When the rack is provided as the upper rack 23 and the lower rack 25, the jet arms 711, 713, and 715 include an upper arm 711 for spraying washing water from the lower portion of the upper rack 23, A lower arm 713 for spraying wash water from the lower part of the rack and a top arm 715 for spraying wash water from the upper part of the upper rack 23.

The washing water sprayed from the spray guns 711, 713 and 715 to the object to be cleaned can be recovered to the sump 3. [

The sump 3 is provided at a lower portion of the tub and includes a storage portion 31 for storing wash water. The storage unit 31 stores wash water mixed with the foreign substances removed from the object to be cleaned.

The sump 3 is separated from the tub 2 by having a sump cover 33 at an upper portion thereof. In this case, the sump cover 33 may include a recovery hole 331 for communicating the washing space 11 of the tub 2 with the storage portion 31 of the sump 3.

The sump 3 is connected to a water supply source (not shown) through a water supply channel 311. The water supply channel 311 is opened / closed by a water supply valve 312 controlled by a control unit . When the water supply valve 312 is opened, water is supplied to the inside of the sump 3, that is, the storage unit 31 through the water supply flow path 311.

The washing water stored in the sump 3 is discharged to the outside of the dishwasher through the drainage passage 313 and the drain pump 314. [ The drainage passage 313 communicates with the lower side of the sump 3 or the lower surface of the sump to allow the wash water stored in the storage portion 31 to be drained.

The water stored in the sump 3 is supplied to the spray guns 711, 713, and 715 through a pump 8 and a first supply passage 731, which will be described later. The first supply passage 731 connects between the pump 8 and the top arm 715. The first supply passage 731 is provided inside the tub 2 through the lower surface of the tub 2 and connected to the upper side of the tub 2 on one side of the tub 2. [

The upper arm 711 is connected to the third supply passage 735 branched from the first supply passage 731 and is rotatably coupled to one end of the third supply passage 735. The lower arm 713 is rotatably connected to a second supply passage 733 passing through the lower surface of the tub 2 and a second supply passage 733 is connected to the pump 8 or the first And is branched and connected at the supply flow path 731 to receive the washing water.

Meanwhile, the dishwasher 100 of the present invention includes a pump 8 for supplying washing water to the spraying arms 711, 713, and 715.

The pump 8 includes a body 82 fixed to the inside of the cabinet 1 and a first chamber C1 and a second chamber C2 formed in the body 82 by dividing a space inside the body A communication hole 86 provided in the sump partition wall 84 for communicating the first chamber C1 with the second chamber C2 and a communication hole 86 communicating with the sump 3 and the first chamber C1, A washing water discharge portion 845 connecting the second chamber C2 and the first supply passage 731, an impeller 85 provided in the second chamber C2, And a heater assembly (H) provided on a bottom surface of the first chamber.

The pump 8 is connected to the sump 3 through a connection path 35. The connection path 35 is connected to the lower side of the side of the storage part 31 of the sump 3 and is connected to the inlet part 841 of the pump 8.

Since the heater assembly H forms the bottom surface of the first chamber C1, the present invention can provide the pump 8 capable of simultaneously performing the washing water heating function and the washing water circulating function.

The heater assembly H may be provided so that the pump heater 83 is exposed to the first chamber C1 and may be in direct contact with the washing water or the heater assembly H may be provided to the pump heater 83 And the heater housing 833 forms the bottom surface of the first chamber C1 so that the sump heater 83 does not directly contact the washing water and transmits heat to the heater housing 833 And the heater housing 833 heats the washing water. In this case, it is preferable that the heater housing 833 is provided with a metal-like conductor in order to effectively transmit thermal energy.

The impeller 85 is a means for moving the wash water discharged from the first chamber C1 to the second chamber C2 through the communication hole 86 to the wash water discharge portion 845, And can be rotated by the driving unit 87.

The driving unit 87 may include a motor 871 provided in the upper portion of the second chamber C2 and a rotating shaft 873 of a motor connected to the impeller 85 through the pump 8.

The dishwasher 100 of the present invention can supply steam to the object to be cleaned in order to improve cleaning efficiency.

In the conventional dishwasher, the steam is injected only on the side of the tub, and the steam spray is concentrated only on the washing object placed on both sides of the rack. Thus, the steam spraying coverage is concentrated within the tub, .

In order to solve such a problem, the dishwasher of the present invention includes a first steam nozzle (42) provided on the door (13) for spraying steam toward the object to be cleaned.

In this case, the dishwasher of the present invention is capable of spraying even steam in a dishwasher in the washing space, so that not only the influence of steam concentrated on both ends of the washing object but also the whole steam can be influenced by the whole steam.

The first steam nozzle 42 may be provided on the lower side of the door 13. In order to utilize the rising property of hot steam, the steam is uniformly conveyed not only to the lower part of the washing space but also to the upper part of the washing space, and the temperature rise of the washing object can be maximized. The spray direction of the first steam nozzle 42 is inclined upwards. That is, the spray direction of the first steam nozzle 42 is sprayed toward the object to be cleaned placed in the upper rack 23 or the lower rack 25. This is to allow the steam injected from the first steam nozzle 42 to be directly sprayed onto the object to be cleaned.

And a first steam channel 44 connected to the first steam nozzle 42 and supplying steam to the first steam channel 42. The first steam channel 44 is provided outside the tub 2. [ That is, the first steam passage 44 is not connected to the first steam nozzle 42 in the tub 2 in order to supply steam to the first steam nozzle 42.

It is preferable that the first steam passage 44 is provided with a hose having rubber or plastic material to withstand a torsional stress generated when the door 13 is opened and closed.

The first steam passage 44 is connected to the pump 8 and the generated steam is supplied using the pump heater 83 provided in the pump 8.

The pump 8 is provided with the heater assembly H on the bottom surface of the first chamber C1 and therefore supplies a predetermined amount of washing water to the first chamber C1 and then operates the pump heater 83 to generate steam . The first chamber C1 is provided with a steam outlet 843 for discharging the steam generated in the first chamber C1 to the outside of the first chamber C1 and the steam outlet 843 is provided in the first chamber C1, (44).

The steam outlet 843 is provided at a predetermined height on the bottom surface of the first chamber C1. The amount of steam that can be generated in the first chamber C1 is determined according to the height between the steam outlet 843 and the first chamber C1. This is because the steam generated in the first chamber C1 can not be discharged through the steam outlet 843 if the washing water is supplied at a higher level than the steam outlet 843. That is, the amount of water supplied to the first chamber C1 to generate steam can not be supplied at a higher water level than the steam outlet 843.

Meanwhile, the case where the steam outlet 843 is provided in the first chamber C1 has been described. However, the steam outlet 843 may be provided in the second chamber C2. Therefore, even if steam is generated in the first chamber C1, the steam is introduced into the second chamber C2 through the communication hole 86 because of the property of rising, and the steam discharged from the steam outlet 843 to the first steam nozzle 44. In this case,

Hereinafter, a structure for spraying steam on the rear surface of the tub will be described.

A second steam nozzle 43 provided on the rear surface of the tub 2 for spraying steam toward the object to be cleaned and a second steam passage 45 for supplying steam to the second steam nozzle 43 .

The second steam nozzle 43 may be detachably fixed to the first supply passage 731.

The second steam nozzle 43 is preferably provided on the rear surface 27 of the tub 2 and specifically on the lower side (lower side) of the rear surface 27 of the tub 2 . This is because the steam has a tendency to rise, so as to supply the steam to the entire washing space. Also, the second steam nozzle 43 may be inclined upwards toward the object to be cleaned, and the steam is directly supplied to the object to be cleaned, thereby efficiently removing foreign matter.

The second steam passage 45 is provided inside the tub 2 and penetrates the lower surface of the tub 2. The second steam passage 45 is connected to the steam outlet 843 provided in the first chamber C1 of the pump 8 (or the steam outlet provided in the second chamber). Or the second steam passage 45 may be branched from the first steam passage 44 and connected to the first steam passage 44 or the second steam passage 45, The amount of steam supplied to the steam generator can be adjusted or opened / closed.

The dishwasher according to the present invention supplies steam to the spray guns 711, 713 and 715 instead of the first steam nozzle 42 or the second steam nozzle 43 in order to supply steam to the tub 2 . The steam generated in the first chamber C1 by the heater assembly H utilizes the property of hot air to rise or drives the impeller 85 to supply the first supply passage 731 and the second supply passage 733 And can supply the turbomachine through the minute sandstone 711, 713, 715.

3 is a sequence block diagram of a method of controlling a dishwasher according to an embodiment of the present invention.

A control method of the dish washer of the present invention will be described with reference to FIG.

The method of controlling a dishwasher according to an embodiment of the present invention includes a main washing step S300, a rinsing step S400, and a general drying step S600.

In the main washing step (S300), the washing object accommodated in the tub (2) is washed to remove foreign matter remaining on the object to be cleaned. That is, the washing water mixed with the detergent is sprayed on the washing object to wash the washing object.

The main washing cycle S300 includes a preliminary steam supply water supply step S322 for supplying steam to the sump 3 to supply steam to the tub 2 (referring to water supplied to the sump for generating steam) A preliminary steam supply step (S324) for generating steam by heating the pump heater (83) and supplying steam to the tub (2), and a preliminary steam supply step (S324) for supplying steam to the sump (3) A main wash water supply step S342 for supplying water to the sump 3, a main wash water injection step S344 for circulating the supplied wash water to wash the object to be cleaned, and a main wash water drain step S346 for draining the wash water .

That is, the main washing step S300 includes a preliminary steam step S320 and a main washing step S340 for supplying steam, and the preliminary steam step S320 includes a preliminary steam water supply step S322, And the main washing step S340 includes a main washing water supplying step S342, a main washing water spraying step S344 and a main washing water draining step S346.

The water supply valve 312 is opened to supply the steam water to the sump 3 through the water supply flow path 311 in order to supply the steam water to the sump 3 in the preliminary steam water supply step S322. The steam water supplied to the sump 3 is supplied to the first chamber C1 of the pump 8 through the connecting passage 35. [

The steam water supplied in the preliminary steam water supply step (S322) is supplied in a smaller amount than the wash water in the main wash water supply step. If a large amount of water is supplied in order to generate a small amount of steam, it takes a long time to heat the pump heater 83 to change the phase of the water into steam, and before the main washing step (S340) This is because a large amount of steam is not needed in order to obtain the effect of supplying the object to be cleaned and thereby removing the foreign matter remaining.

The pump 8 is provided in the pump 8 and the steam generated by the heated pump heater 83 is supplied to the pump 8 through the steam outlet 843 ).

In this case, the water level of the steam water supplied in the preliminary steam water supply step (S322) is provided below the steam outlet 843. If steam is supplied at a higher water level than the steam outlet 843, the generated steam can not be discharged through the steam outlet 843 even if steam is generated in the pump 8.

Therefore, when the height from the steam outlet 843 to the inner lower surface of the pump 8 is H, the water level of the steam water supplied in the preliminary steam water supply step S322 is provided below H.

The water level of the steam water is determined by experimentally determining the internal volume of the sump 3 and the pump 8 by adjusting the opening time of the water supply valve 312 or the flow rate of the water in the water supply flow path 311 (Not shown) to adjust the amount of water supplied into the sump 3 and the pump 8.

In the preliminary steam supply water supply step (S322), it is preferable to supply a small amount of water at an amount of about 0.8L.

On the other hand, in the preliminary steam supply step S324, when a current is supplied to the pump heater 83, the heated pump heater 83 generates steam by heating the steam in the pump 8. The steam discharged from the pump 8 through the steam outlet 843 flows through the first steam nozzle 44 and / or the second steam nozzle 45 through the first steam passage 44 and / 43, respectively.

Steam sprayed from the first steam nozzle 42 and / or the second steam nozzle 43 is supplied to the object to be cleaned, and moisture is evaporated into the object to be cleaned, thereby supplying moisture to the dried object and performing heat exchange, It plays a role of calling out the foreign material so that it falls well. Further, the tableware to be cleaned is heated to improve the cleaning effect in the main washing stage (S340).

A switching valve 444 for selectively opening and closing the first steam passage 44 and the second steam passage 45 for selectively injecting the steam injected from the first steam nozzle 42 and the second steam nozzle 43, So that steam can be sprayed from the front or rear of the tub 2, or steam can be sprayed from both the front and rear of the tub 2.

The preliminary steam supply step S324 includes a first steam step of supplying steam to the tub 2 by using the first steam nozzle 42 in front of the tub 2 and a second steam step of supplying steam from the rear of the tub 2 And a second steam step of supplying steam to the tub 2 by using the nozzle 43.

The first steam step and the second steam step may be performed simultaneously or selectively.

The steam generated by the pump 8 can be supplied to the tub 2 through the spray guns 711, 713 and 715 by driving the impeller 85.

That is, the preliminary steam supply step S324 may include a third steam step of supplying steam using at least one of the plurality of spray guns 711, 713, and 715 provided in the tub 2. [

A conventional dishwasher may supply water to the tub to supply steam before the washing stroke, then heat the heater provided on the lower surface of the tub to generate steam, and then, It was common to drain and re-supply the wash water.

However, there was a problem in that the water left in the tub could not be produced as steam before supplying the washing water for the washing stroke. First, there is a danger that the heated heater drains the water before the dishwasher, and the heater is burned. Second, the water consumption is increased due to discarding the residual water and the washing water. Thirdly, There is a problem that time increases.

In order to solve such a problem, the control method of the dishwasher of the present invention is such that, in the main wash water supply step S342, the control method of the dish washer is not supplied to the sump 3 after the preliminary steam supply step S324, The washing water for the main washing step (S340) is supplied to the sump (3), without the condensed remaining water being drained.

Therefore, the control method of the dishwasher according to the present invention can prevent the pump heater 83 from being exposed to overheat, and can use the remaining water as the washing water, thereby reducing the amount of water used. Heating up to temperature can save energy and time.

In the preliminary steam supply step S324, the heating time and the heating temperature of the pump heater 83 can be experimentally adjusted to set an optimum value so that steam can be left in the pump 8 when steam is generated and supplied.

The level of the residual water remaining in the sump 3 or the pump 8 is preferably 1 cm or more on the lower surface of the pump 8.

The main cleaning step S340 is a step for removing foreign matter from the cleaning object in earnest. That is, in the main washing step (S340), washing water containing detergent is supplied to wash the tableware to be washed.

The amount of wash water supplied in the main wash water supply step S342 is greater than the amount of water supplied to the sump 3 in the preliminary steam water supply step S322. In the main wash water supply step (S342), the level of the wash water supplied is provided above the steam discharge port (843). More specifically, it is preferable that the washing water is supplied to the sump 3 and the pump 8 at a level higher than the level at which the communication hole 86 provided in the sump partition wall 84 is locked. Specifically, it is preferable that the wash water supplied in the main wash water supply step S342 is about 2.2L.

In the main wash water injection step S344, when the impeller 85 is rotated, water filled in the first chamber C1 is discharged through the communication hole 86 and discharged into the wash water discharge portion 845 provided in the second chamber C2. 713, and 715 through the minute sandstone 711, 713, and 715, respectively. The foreign substances remaining on the object to be cleaned are removed by the water pressure of the washing water sprayed from the minute sandstone 711, 713 and 715, the washing water containing foreign matter falls down to the bottom of the tub 2, The foreign matter is filtered through the pump 331 and only the washing water is supplied to the inside of the sump 3 and then sprayed to the spraying arms 711, 713 and 715 through the pump 8 and circulated.

In this case, it is also possible to heat the circulating washing water by heating the pump heater 83 to inject the hot water through the spraying arms 711, 713, and 715.

After the main washing water injection step S344 is completed, the washing water stored in the sump 3 and the pump 8 is drained to the outside using the drainage flow path 313 and the drainage pump 314 in the main washing water drain step S346 .

In the main wash water drain step (S346), all the wash water stored in the sump 3 and the pump 8 is drained. This is because the washing water stored in the sump 3 and the pump 8 after the main washing water injection step S344 is completed is contaminated washing water containing a large amount of foreign matter.

The rinsing cycle S400 includes a rinsing water supply step S402 for supplying the rinsing water to the sump 3 and a rinsing operation for spraying the rinsing water to the spraying arms 711, 713 and 715 by operating the pump 8 (S404), and a rinse water draining step (S406) for draining the rinse water from the sump (3).

When the rinse water is supplied to the sump 3 in the rinse water supply step S402, the impeller 85 is rotated to mix the water stored in the first chamber C1 with the second chamber C2, (711, 713, 715) to the inside of the tub 2 through the spray guns 711, In the rinse water circulation step (S404), the impeller (85) is rotated for a predetermined time so that the foreign matter remaining on the object to be cleaned is sufficiently dropped. Then, the rinse water stored in the sump 3 and the pump 8 is drained in the rinse water drain step S406. The rinse water that is supplied to the sump 3 in the rinse cycle S400 and is sprayed through the spray guns 711, 713, and 715 does not include detergent. The rinse cycle (S400) is repeated two to four times to remove foreign matter and detergent that may remain in the tableware.

In the rinsing water circulation step S404, the rinsing water supplied to the tub 2 may be heated to supply the hot water to the tub 2 by heating the pump heater 83 to supply the hot water.

In the rinse water drainage step (S406), the rinse water stored in the sump (3) and the pump (8) is drained. In the case of re-supplying water (main washing water) without draining the steam water in the main washing cycle (S300), the pump heater 83 is excessively overheated to generate steam, so that water in the pump 8 is not completely drained It is possible to prevent the pump heater 83 from being damaged due to overheating of the pump heater 83 and to save energy in the main cleaning step S340 by using the latent heat. However, in the rinsing step (S400), since the rinsing water sufficiently supplied into the pump 8 is heated, there is no possibility that the pump heater 83 is overheated, and the pump heater 83 is excessively overheated You do not have to. Accordingly, in the rinse cycle S400, the rinse water in the sump 3 and the pump 8 is drained in the rinse water drainage step S406, and the clean steam is discharged from the steam drying cycle S500 (to be described later in detail) To the tub.

The control method of the dishwasher according to an embodiment of the present invention includes a steam drying step S500 between the rinsing step S400 and the general drying step S600.

In the steam drying step S500, the inside of the tub 2 is made to be hot and humid, the steam is sprayed to the object to be cleaned, the object to be cleaned is heated, the heated object is evaporated, It refers to the administration to dry the object.

In the conventional dishwasher, a large amount of heated water is sprayed onto the object to be cleaned during the final rinse to dry the object to be cleaned after the rinse cycle, and the temperature of the object to be cleaned is raised. However, since a large amount of water must be heated to heat the tableware, there is a problem that water consumption is large and energy consumption is large.

Therefore, the present invention is to dry the object to be cleaned by supplying steam instead of water. Accordingly, since a small amount of water can be boiled to raise the temperature of the tableware to the temperature for drying, energy can be saved, water consumption can be reduced, cleaning time can be shortened, and the coating of the tableware can be damaged It is possible to achieve a high-temperature environment by spraying steam, thus achieving the effect of disinfecting dishes.

The steam drying step S500 includes a drying steam supply step S502 for supplying the drying steam water after the rinsing step S400 and a drying steam supplying step S504 for supplying steam to the tub 2 do.

A small amount of water is supplied to the sump 3 and the pump 8 in the dry steam water supply step S502 and the water level of the steam water supplied in the dry steam water supply step S502 is lower than the steam discharge opening 843 And is supplied to the lower side of the pump 8 by 1 cm or more. Specifically, the amount of steam supplied in the dry steam water supply step (S502) is supplied at 0.8L.

In the present invention, the rinse water is drained in the rinse cycle (S400), and the dry steam water is reused in the steam drying cycle (S500). That is, the rinsing step (S400) and the steam drying step (S500) are separated, and the rinsing step (S400) and the steam drying step (S500) are separated into separate independent strokes. If the rinsing is completed, the tableware can be hygienically steam dried. In the case where only the steam drying step (S500) is performed without the rinsing step (S400), for example, the tableware which has been washed and rinsed by the user is quickly dried with steam , It is possible to realize a separate course for obtaining a sterilizing effect.

The control described in the preliminary steam step S320 can be applied as it is in the control of the steam drying step S500. That is, in the drying steam water supply step S502, the control described in the preliminary steam supply step S322 may be applied, and in the dry steam supply step S504, the control described in the preliminary steam supply step S324 may be applied. Therefore, the description of the drying steam water supply step (S502) and the drying steam supplying step (S504) are duplicated and will be omitted.

However, the steam drying step S500 may further include a drying steam drainage step (S506) for draining water (steam water) stored in the sump 3 and the pump 8. Thereafter, since the washing of the tableware is completed, it is not necessary to supply the steam or supply the washing water to the tub. Therefore, the water stored in the pump 8 and the sump 3 is drained to prevent hygiene problems such as propagation of microorganisms.

FIG. 4 is a sequence block diagram illustrating a method of supplying steam water for steam generation in the method of controlling a dishwasher according to an embodiment of the present invention. Referring to FIG.

Both the preliminary steam step S320 and the steam drying step S500 supply the steam to the tub 2. The control method of supplying steam water to the sump in the preliminary steam water supply step (S322) or the dry steam water supply step (S502) will be described below. The following description can be applied equally to the preliminary steam water supply step S322 and the dry steam water supply step S502. For convenience of explanation, the terms are unified into the steam water supply steps S322 and S502 do.

4, the steam supply step (S322, S502) includes a first water supply step (S10) for supplying the washing water to the sump (3) for washing the sump (3) and the pump (8) And a first drainage step (S30) for draining the washed water.

If foreign matter is contained in the steam water stored in the sump 3 or the pump 8 and the contamination is high, the pump heater 83 must be excessively heated to generate steam, steam may not be generated as much as desired, The supplied steam may contaminate the dishware. Therefore, the washing water is supplied to the sump 3 to dilute the water in the sump 3 or the pump 8, and the water containing the foreign matter is drained through the first drainage step S30, Wash the pump (8).

Between the first water supply step (S10) and the first drainage step (S30), the pump (8) is driven to spray the washing water to the tub (2) through the spray guns (711, 713, 715) (S20) for removing foreign matters that may remain in the first circulation step (S20).

The steam supply step (S322, S502) according to the first example includes a first water supply step (S10) and a first drainage step (S30), and the first circulation step (S20) may optionally be included. In this case, the water supplied in the first water supply step S10 is supplied at a level higher than the steam outlet 843, preferably filled in the reservoir 31 of the sump 3, Dilute the water. In the first drainage step S30, the washing water drained in the first water supply stage is drained, but not lower than the steam outlet 843 in the pump 8 to generate steam, So that the water level is at least 1 cm. Thereby, steam is generated by using the residual water left in the pump 8. Clean steam can be produced and supplied and the amount of water used for washing can be minimized compared with the case where the first water supply step S10 is not performed.

Meanwhile, the steam supply step (S322, S502) according to the second example includes the first water supply step (S10) and the first drainage step (S30), and the first circulation step (S20) . In this case, the water supplied in the first water supply step S10 is supplied at a level higher than the steam outlet 843, preferably filled in the reservoir 31 of the sump 3, Dilute the water. In the first drainage step (S30), all of the wash water supplied in the first water supply step is drained, and the contaminated washing water in the sump and the pump is removed. Thereafter, a second water supply step (S40) is further included to lower the steam outlet port (843) inside the pump (8) to generate steam in the second water supply step (S40) Water the steam to keep it. As a result, clean steam can be produced and supplied in comparison with the steam supply step (S322, S502) according to the first example.

On the other hand, the general drying step S600 does not supply steam and dries the object to be cleaned.

Before the general drying cycle (S600), steam is supplied to heat the object to be cleaned. To dry the heated object, it is divided into an exhaust system and a circulation system.

In the exhaust mode, the general drying cycle S600 automatically opens the door 13 after the steam drying cycle S500 is finished and discharges the steam and humid air from the washing space 21 to the outside through the opening 11 (Not shown) for opening and closing an exhaust duct (not shown) communicating with the tub 2 and an exhaust valve (not shown) for opening and closing an exhaust duct (not shown) And a first drying step (not shown) for discharging steam and humid air to the outside through an exhaust duct (not shown).

On the other hand, in the case of the circulation type, the dishwasher includes a circulating duct 202 communicating with the tub 2 on both sides, a dehumidifying device 204 provided inside the circulating duct for condensing the humid air, And a circulation fan 208 provided in the circulation duct 202 to supply the air heated by the heating device 206 to the air circulation duct 202 .

In this case, in the general drying step S600, after the steam drying step S500 is completed, the circulating fan 208 is operated to circulate the air in the tub 2 through the circulating duct 202, And a second drying step (not shown) for condensing the humid air circulating through the dehumidifier 204 and supplying the dried air to the tub to dry the object to be cleaned. Therefore, the hot air is not discharged to the outside of the dishwasher, so there is no danger of burning by the user, and the installation of the dishwasher is facilitated since no exhaust duct is required.

Further, the general drying step S600 may include a third drying step (not shown) for heating the dried air in the dehumidifying device 204 to the heating device 206 and supplying hot air to the tub. Therefore, the drying time is shortened compared to when air is supplied to the tub rather than the hot air, and the food is kept warm so that the food does not cool even if the hot food is immediately contained.

Meanwhile, the method of controlling a dishwasher according to an embodiment of the present invention may further include a preliminary washing cycle (S200).

In the preliminary washing step (S200), washing water not mixed with detergent is sprayed onto the object to be cleaned before the main washing step (S300) to remove a large foreign matter attached to the object to be cleaned. It goes without saying that the hot water can be sprayed through the spray gun by heating the pump heater 83 even in the preliminary washing cycle (S200).

6 shows an embodiment of various courses and options of the method of controlling a dishwasher of the present invention.

Referring to FIGS. 1, 3 and 6, a method of controlling a dishwasher according to an embodiment of the present invention may include a course / option selection step S100 for selecting a preset course or selecting a predetermined option have.

The dishwasher includes a course selection unit 16 for selecting one course from a plurality of preset courses and an option selection unit 16 for selecting a steam supply option for supplying additional steam even if the selected course is a non- 17). ≪ / RTI > The control panel 14 is provided at the upper or upper part of the front surface of the dishwasher.

The control panel 14 includes a display unit 15. The display unit 15 displays the selected course in the course selection unit 16 and displays the option selected by the option selection unit 17 to inform the user to provide.

The course selection section 16 is divided into a steam use course (st) using steam and a non-steam use course (stn) that does not use steam to wash the object to be cleaned. The steam use course (stn) includes a general washing course (stn-nor) which will be described later, and the steam use course (st) includes a preliminary steam course (st-c1), a steam drying course And a course (st-c3).

The preliminary steam course, the steam drying course, and the steam course will be described with reference to FIG.

If the general cleaning course (stn-nor) is selected in the course / option selection step S100, the general cleaning course (stn-nor) is the main cleaning stage S300 (main cleaning stage S340) A rinsing cycle (S400), and a general drying cycle (S600). In this case, the rinsing water heated to a high temperature is sprayed onto the object to be cleaned in the final rinsing step of the rinsing step (S400), the water drops on the surface are evaporated while the object to be cleaned is cooled, and the object to be cleaned is dried.

When the preliminary steam course st-c1 is selected in the course / option selection step S100, the preliminary steam course st-c1 is switched to the main washing stage S300 for supplying steam (i.e., the preliminary steam stage S320 and the preliminary steam stage st- (Including the main cleaning step S340), a rinsing cycle (S400), and a general drying cycle (S600).

When the steam drying course (st-c2) is selected in the course / option selection step S100, the steam drying course st-c2 is the main washing stage S300 (main washing stage S340) ), A rinsing cycle (S400), a steam drying cycle (S500), and a general drying cycle (S600). Therefore, after the washing process, the steam is supplied to the object to be cleaned and heated, and the object to be cleaned is dried using the heat of evaporation while being cooled.

When the steam course st-c3 is selected in the course / option selection step S100, the steam course st-c3 is switched to the main washing stage S300 for supplying steam (Including the main washing step S340), a rinsing step S400, a steam drying step S500, and a general drying step S600.

On the other hand, even if the course selected in the course / option selection step S100 is the non-steam course (stn), steam can be supplied to the tub by the user's selection in the option selection unit 17. [ The option selecting unit 17 selects the first option stn-o1 for performing the preliminary steam step S320, the second option stn-o2 for performing the steam drying step S500, the preliminary steam step S320, And a third option (stn-o3) for performing a steam drying step (S500). Therefore, even if the general cleaning course (stn-nor) is selected in the course / option selection step S100, the first option or the second option is selected through the option selection unit 17 during the normal cleaning course (stn-nor) So that the cleaning force can be improved by injecting steam to the object to be cleaned.

5 is a sequence block diagram of a steam refresh course in a control method of a dishwasher according to another embodiment of the present invention. The steam refresh course (st-re) will be described with reference to Figs. 5 and 6. Fig.

The steam refresh course (st-re) according to another embodiment of the present invention includes a rinse cycle (S400) in which washing water is sprayed to a washing object to be rinsed, a steam drying cycle (S500), and a general drying step (S600) for drying the object to be cleaned without supplying steam.

The steam refresh course (st-re) does not include a cleaning stroke to clean the object to be cleaned before the rinse cycle (S400). The steam refresh course (st-re) is a course for removing dust that is not used, removing it, removing foreign substances that can only be rinsed with water without detergent, or warming the dishes before food is added.

The description of the rinsing step S400, the steam drying step S500, and the general drying step S600 may be applied to the control method of the dishwasher according to the embodiment of the present invention, It is omitted. Only differences will be described below.

The rinsing step S400 includes a first rinsing step S420 of spraying the rinsing water at a first predetermined temperature for a first predetermined time and a second rinsing step of spraying the rinsing water at a second predetermined temperature for a second predetermined time S440).

In the first rinsing step S420 and the second rinsing step S440, water is supplied to the sump 3, the pump 8 is driven to spray water to the tub through the spraying arm for a predetermined time, Respectively.

The first rinsing step (S420) supplies water supplied from the outside. The supplied water is above the sump partition wall 84 and the supplied water is injected into the tub 2 through the wash water outlet 845 by the rotation of the impeller 85. In the first rinsing step (S420), only the water is sprayed through the top arm 715. The first predetermined temperature is the temperature of the water supplied from the outside, and the first predetermined time is about 60 seconds. Therefore, it can be regarded as a preliminary rinse step to wet the object to be cleaned. However, since the hot water is supplied in the case of North America, the temperature of the object to be cleaned is slightly raised.

Meanwhile, the second rinsing step S440 is a step of rinsing the object to be cleaned in a full scale, and the water is sprayed to the object to be cleaned while rotating the upper arm 711 and the lower arm 713. [ The second predetermined temperature is higher than the first predetermined temperature, and the second predetermined time is a longer time than the first predetermined time. Therefore, in the second rinsing step (S440), it is possible to obtain an effect of cleaning the dust or the like attached to the cleaning object in earnest.

And a rinsing water heating step (not shown) for heating the water using the pump heater 83 to heat the rinsing water to the second predetermined temperature in the second rinsing step S440. Specifically, the second predetermined temperature is about 45 ° C, and the second predetermined time is about 240 seconds.

Meanwhile, the rinsing step S400 may further include a third rinsing step S460 of spraying the rinsing water at a third predetermined temperature for a third predetermined time.

The third predetermined temperature is lower than the second predetermined temperature, and more specifically, the third predetermined temperature may be equal to the first predetermined temperature. That is, the water which is supplied to the sump 3 in the third rinsing step S460 and which is injected into the tub 2 by the pump 8 means water which is not heated by the pump heater 83. Therefore, in the second rinsing step (S440), the pump heater 83 which heats the water is cooled to prevent the pump heater from being overheated. If the water stored in the sump and the pump is drained and the third rinsing step (S460) is not performed in the second rinsing step (S440), all the water stored in the pump (8) is drained so that the pump heater 83) may overheat and fire or be damaged.

The third predetermined time may be shorter than the second predetermined time, and may be about 60 seconds, which is the same as the first predetermined time. This is because it does not take much time to cool the superheated pump heater 83.

In the third rinsing step S460, water is sprayed through the top arm 715 as in the first rinsing step S420, and the sprayed water serves to cool the object to be cleaned.

The dishwasher according to another embodiment of the present invention includes a course selection unit 16 for selecting one course from among various preset courses to be cleaned, an option for adding steam to the course selected by the course selection unit, And a control panel 14 including a selection unit 17.

The control method of the dishwasher according to another embodiment of the present invention includes a course / option selection step (S100) in which one of the preset various courses capable of cleaning the cleaning object is selected or the steam is additionally supplied to the selected course can do.

The rinsing cycle (S400), the steam drying cycle (S500), and the general drying cycle (S600) are performed when the steam refresh course (st-re) is selected in the course / option selection step.

Since the object to be cleaned after the steam refresh course (st-re) is controlled by the dust, it is not cleaned by using the detergent, the total execution time is short, the dish is sterilized by steam, There is almost no leftover, and the effect of warming the tableware can be obtained.

The present invention may be embodied in various forms without departing from the scope of the invention. Accordingly, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

The main cleaning cycle (S300)
In the preliminary steam step S320,
In the preliminary steam water supply step (S322)
In the preliminary steam supply step (S324)
In the main washing step S340,
In the main wash water supply step (S342)
Main wash water injection step (S344)
Main wash water drainage step (S346)
The rinsing cycle (S400)
The rinse water supply step (S402)
The rinse water circulation step (S404)
The rinse water drainage step (S406)
General Drying Administration (S600)

Claims (14)

  1. A rinsing step of spraying washing water on the object to be cleaned and rinsing;
    A steam drying step of supplying steam to the object to be cleaned and drying the steam;
    And a general drying step of drying the object to be cleaned without supplying steam,
    The rinsing cycle
    A rinse water supply step of supplying rinse water to the sump,
    A rinse water circulation step of operating the pump to spray the rinse water into the spray gun,
    And a rinse water drainage step of draining the rinse water from the sump,
    The steam drying stroke
    A dry steam water supply step of supplying dry steam water to dry the object to be cleaned,
    And a dry steam supplying step of supplying steam to the tub,
    Wherein the water level of the steam water supplied in the dry steam water supply step is provided under the steam outlet provided in the pump and discharging the steam.
  2. The method according to claim 1,
    A preliminary washing step of washing the object to be cleaned by supplying the washing water not containing the detergent to the object to be cleaned before the rinsing step,
    And a main washing step of washing the object to be cleaned by supplying the washing water mixed with the detergent to the object to be cleaned.
  3. The method according to claim 1,
    A course / option selection step of selecting one of preset courses which can wash the object to be cleaned or additionally supplying steam to the selected course,
    Wherein the rinsing step, the steam drying step, and the general drying step are performed when the steam refresh course is selected in the course / option selection step.
  4. The method according to claim 1,
    The rinsing cycle
    A first rinsing step of spraying the rinsing water through the top tank at a first predetermined temperature for a first predetermined time,
    And a second rinsing step of spraying the rinsing water at a second predetermined temperature for a second predetermined time through the upper arm and the lower arm after the first rinsing step,
    Wherein the first predetermined time is shorter than the second predetermined time.
  5. 5. The method of claim 4,
    And a rinsing water heating step of heating the pump heater in the second rinsing step.
  6. 6. The method of claim 5,
    And a third rinsing step of spraying the rinsing water at a third predetermined temperature for a third predetermined time through the top arm after the second rinsing step.
  7. The method of claim 1,
    Wherein the general drying cycle includes a first drying step of opening the door to discharge steam in the tub to the outside or discharging steam in the tub to the outside through an exhaust duct.
  8. The method according to claim 1,
    The dishwasher includes a circulating duct for circulating air in the tub through the tub, and a dehumidifying device provided in the circulating duct,
    Wherein the general drying cycle includes a second drying step in which moisture is removed by the dehumidifying device while circulating humid air in the tub through the air circulation duct.
  9. The method according to claim 1,
    Further comprising a course / option selection step of selecting an option to select a course or to additionally supply steam to the selected course.
  10. 10. The method of claim 9,
    Wherein when the steam refresh course is selected in the course / option selection step, the steamless fish course is performed by a rinsing stroke, a steam drying stroke, and a general drying stroke.
  11. The method according to claim 1,
    The drying steam supply step
    A first water supply step of supplying wash water to the sump to clean the sump and the pump;
    And a first drainage step of draining the water supplied to the dishwasher.
  12. 12. The method of claim 11,
    Further comprising a first circulation step for circulating the sump and the washing water in the pump by driving the pump before the first drainage step to clean the inside of the sump and the pump.
  13. 12. The method of claim 11,
    Wherein the first drainage step drains all the wash water supplied in the first water supply step,
    And a second water supply step of supplying steam water for generating steam to the sump after the first drainage step.
  14. 12. The method of claim 11,
    Wherein the first drainage step drains only a part of the wash water supplied in the first water supply step and generates steam using the remaining wash water.
KR1020160000564A 2016-01-04 2016-01-04 Dishwasher and Control Method of the dish washer KR20170081477A (en)

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AU2016385330A AU2016385330B2 (en) 2016-01-04 2016-12-29 Dishwasher and control method of the dish washer
PCT/KR2016/015466 WO2017119670A1 (en) 2016-01-04 2016-12-29 Dishwasher and control method of the dish washer
US15/397,202 US20170188777A1 (en) 2016-01-04 2017-01-03 Dishwasher and control method thereof
EP17150191.9A EP3187090A1 (en) 2016-01-04 2017-01-03 Dishwasher and control method thereof
CN201710003992.7A CN106937849A (en) 2016-01-04 2017-01-04 Dishwasher and its control method

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CN109124513A (en) * 2018-07-18 2019-01-04 浙江欧琳生活健康科技有限公司 A kind of method and system of dish-washing machine sink steam pre-treatment
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US20100015483A1 (en) * 2004-09-03 2010-01-21 Yang Jefferson Ys Reaction gas temperature and humidity regulating module for fuel cell stack
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KR101283745B1 (en) * 2006-06-19 2013-07-08 엘지전자 주식회사 Dish washer
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KR101455986B1 (en) * 2007-12-10 2014-11-03 엘지전자 주식회사 Dish washer and method for controlling thereof
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KR20110130957A (en) * 2010-05-28 2011-12-06 엘지전자 주식회사 Dishwasher and controlling method for the same
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US20170188777A1 (en) 2017-07-06
CN106937849A (en) 2017-07-11
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WO2017119670A1 (en) 2017-07-13
AU2016385330A1 (en) 2018-06-14

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