WO2019156503A1

WO2019156503A1 - Dishwasher and method for controlling same

Info

Publication number: WO2019156503A1
Application number: PCT/KR2019/001570
Authority: WO
Inventors: 권순용
Original assignee: 엘지전자 주식회사
Priority date: 2018-02-08
Filing date: 2019-02-08
Publication date: 2019-08-15
Also published as: US20200397213A1; KR102429096B1; KR20190096167A

Abstract

The present invention relates to a dishwasher. A dishwasher according to the present invention comprises: a cabinet forming the external shape and having one side open; a door for opening and closing the open front of the cabinet; a tub disposed inside the cabinet and forming a space in which tableware is washed; a dispenser disposed on one side of the door and for supplying a detergent into the tub; and an injection arm having a plurality of injection nozzles which have injection holes open in different directions such that washing water can be injected, and having the height adjusted to two or more levels, wherein the plurality of injection nozzles comprise two or more dispenser injection nozzles for injecting the washing water into the dispenser in accordance with the adjusted height of the injection arm.

Description

Dishwasher and Control Method

The present invention relates to a dishwasher, and more particularly, to a dishwasher including a spray arm for spraying the washing water with a dispenser.

The dishwasher is a device for washing dishes disposed inside the tub using the washing water, and the dishwasher may remove dirt from the dishes using the washing water in which the washing detergent is dissolved.

Detergents used for washing dishes are temporarily stored in the dispenser. In this washing step, when the dispenser is opened to discharge the cleaning detergent therein into the tub, the dispenser may be dissolved in circulated washing water to wash the dishes. However, when using a powder-type cleaning detergent, even if the dispenser is opened, some of the detergent may remain inside the dispenser, and the remaining amount of the detergent in the dispenser does not dissolve an appropriate amount of detergent so that proper dish washing This may not happen.

Unlike in the case of the washing machine, since the dishwasher does not supply separate washing water into the dispenser, a detergent may frequently remain in the dispenser, and the remaining of the detergent may be a problem of contaminating the inside of the dispenser.

The first problem to be solved by the present invention is to provide a dishwasher for washing dishes using all the detergent added to the dispenser. In addition, by using a dishwasher, to provide a control method of the dishwasher that can be used for all detergents put into the dispenser during the washing process.

The second problem to be solved by the present invention is to provide a dishwasher that can keep the inside of the dispenser clean.

The third problem to be solved by the present invention is to provide a dishwasher capable of supplying the detergent in the dispenser to the tub by using the injection arm is adjusted height.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the first object to the third object, the dishwasher according to the present invention, the cabinet forming an outer shape, one side is opened; A door configured to open and close the opened front of the cabinet; A tub disposed inside the cabinet and forming a space for washing dishes; A dispenser disposed at one side of the door and supplying a detergent into the tub; And a plurality of injection nozzles having a plurality of injection nozzles formed therein, the injection holes being opened in different directions so that the washing water is sprayed, the jet arms having heights adjusted in at least two stages. Accordingly, at least two dispenser spray nozzles are formed to spray the washing water into the dispenser, and the washing water may be sprayed into the dispenser from a height-controlled spray arm to supply detergent to the tub.

The dishwasher according to the present invention is disposed inside the tub, and further includes a rack on which the dishes are mounted, the spray arm is rotatably disposed on the lower side of the rack, and the dispenser is spaced apart on one side of the rack. The spray arm disposed below the dispenser may spray the washing water into the dispenser.

The jetting arm of the dishwasher according to the present invention may include a first jetting part extending to one side with respect to the rotating shaft on which the jetting arm rotates, and a second powder extending in the opposite direction to the first jetting part with respect to the rotating shaft At least one dispenser injection nozzle which is divided into four parts and each of the first injection part and the second injection part has an injection hole formed to spray washing water into the dispenser is disposed, and thus, the first injection part or The dispenser spray nozzle disposed in the second spray unit may spray the washing water into the dispenser.

The dispenser spray nozzle of the dishwasher according to the present invention includes a first dispenser spray nozzle for spraying washing water into the dispenser at the highest height of the spray arm, and a second spraying spray water into the dispenser at the lowest height of the spray arm. And a dispenser injection nozzle, wherein the distance of the first dispenser injection nozzle from the center of the jetting arm is greater than the distance of the second dispenser injection nozzle from the center of the jetting arm, at a distance from the dispenser. Accordingly, the washing water may be sprayed into the dispenser by adjusting the distance and angle of the dispenser spray nozzle.

The angle formed by the direction in which the washing water sprayed to the first dispenser spray nozzle is directed upward from the imaginary horizontal line formed in the direction in which the jetting arm of the dishwasher extends, is upward from the imaginary horizontal line. The direction toward the washing water sprayed from the second dispenser spray nozzle is formed to be smaller than the angle formed, and the washing water may be sprayed into the dispenser by adjusting the distance and angle of the dispenser spray nozzle according to the distance from the dispenser.

In order to achieve the first object to the third object, the dishwasher according to the present invention, the cabinet forming an outer shape, one side is opened; A door configured to open and close the opened front of the cabinet; A tub disposed inside the cabinet and forming a space for washing dishes; A dispenser disposed at one side of the door and supplying a detergent into the tub; An upper rack disposed above the tub and on which tableware is placed; A lower rack disposed inside the tub, disposed below the upper rack, and equipped with dishes; Lower part sandstone for spraying the washing water from the lower side of the lower rack to the upper side; An upper spraying arm disposed at a lower side of the upper rack and spraying the washing water upward; And at least two dispenser injection nozzles disposed on the upper injection arm and spraying the washing water to the dispenser according to the height at which the upper injection arm is adjusted. By spraying, the detergent inside the dispenser can be supplied to the tub.

The dispenser spray nozzle of the dishwasher according to the present invention includes a first dispenser spray nozzle for spraying washing water into the dispenser at the highest height of the spray arm, and a second spraying spray water into the dispenser at the lowest height of the spray arm. And a dispenser injection nozzle, and a third dispenser injection nozzle formed at a height between the first dispenser injection nozzle and the second dispenser injection nozzle, wherein the first dispenser injection nozzle has an upper portion than the third dispenser injection nozzle. The second dispenser injection nozzle is disposed closer to the center of the jetting arm than the third dispenser injection nozzle, and is spaced apart from the center of the sandstone, and according to the height adjusted in the upper injection rock adjusted in three stages. The wash water may be injected into the dispenser using the third dispenser spray nozzle.

In order to achieve the first object, the control method of the dish washer according to the present invention comprises a pre-washing step of performing mechanical washing of the dish by spraying the washing water; After the preliminary washing step, the main washing step of chemically cleaning the dish using a washing detergent; A rinsing step of washing the dishes passed through the main washing step with water; And a dispenser spraying step of spraying the washing water into the dispenser in which the detergent is temporarily stored before the main washing step, and supplying the detergent inside the dispenser to the tub.

The dispenser injection step of the control method of the dishwasher according to the present invention, the step of supplying water into the tub; Opening the opening formed in the dispenser; Including the step of supplying the washing water to the opening of the dispenser through the upper injection arm, it is possible to supply the detergent inside the dispenser to the tub.

The dispenser spraying step of the control method of the dishwasher according to the present invention, after the opening of the dispenser is opened, the upper injection rock disposed inside the tub, and the upper portion of the lower sandstone disposed below the upper injection rock The method may further include adjusting the flow path such that the washing water is supplied only to the partial sandstone, thereby concentrating on supplying the detergent inside the dispenser to the tub.

The dispenser spraying step of the control method of the dishwasher according to the present invention may further include heating the supplied water to effectively remove the detergent remaining in the dispenser.

Specific details of other embodiments are included in the detailed description and the drawings.

According to the dishwasher of the present invention, there are one or more of the following effects.

First, all detergents stored in the dispenser are introduced into the tub so that dishwashing using an appropriate amount of detergent may be performed.

Second, since all of the detergent stored in the dispenser is discharged into the tub, there is an advantage that can maintain the cleanness of the inside of the dispenser.

Third, by adding a step of supplying the washing water into a separate dispenser, there is an advantage that can maintain the cleanness of the inside of the dispenser, and also to effectively wash the dishes.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view of a dishwasher with an open door according to one embodiment of the present invention.

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

3 is a view showing a dispenser according to an embodiment of the present invention.

4 is a plan view of the upper injection rock according to an embodiment of the present invention.

5A is a view illustrating a first spray unit in which a dispenser spray nozzle is disposed according to an embodiment of the present invention.

5B is a view illustrating a second injection unit in which a dispenser injection nozzle is disposed according to an embodiment of the present invention.

6A is a view for explaining an arrangement of the upper injection rock at the first height according to an embodiment of the present invention.

6B is a view for explaining the arrangement of the upper injection rock at the second height according to an embodiment of the present invention.

6C is a view for explaining the arrangement of the upper injection rock at the third height according to the embodiment of the present invention.

7 is a flowchart illustrating a dish washer control method according to an embodiment of the present invention.

8 is a flowchart illustrating a dispenser injection step according to an embodiment of the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

The expressions referring to the following directions “before (F) / after (R) / left (Le) / right (Ri) / upper (U) / lower (D)” are shown in FIGS. 1, 6A, and FIG. 6b and 6c, but the present invention is only for explaining the present invention so that the present invention can be clearly understood, and each direction may be defined differently according to where the reference is placed.

In addition, the expression referring to the direction of "F (F ') / (R') / Left (Le '/ Right (Ri)", etc., shown in FIG. 4 may vary as the upper injection rock 100 is rotated. This is for convenience of the invention, which may also define each direction differently according to where the reference is placed.

Hereinafter, a dishwasher according to embodiments of the present invention will be described with reference to the drawings.

1 is a perspective view of a dishwasher with an open door according to one embodiment of the present invention. 2 is a schematic front cross-sectional view of the dishwasher according to one embodiment of the present invention.

Hereinafter, the overall structure of the dishwasher according to the present embodiment will be described with reference to FIGS. 1 and 2. Dishwasher 10 according to the present embodiment is installed in the cabinet 20, the door 22 to open and close the interior of the cabinet 20 is coupled to the cabinet 20, the cabinet 20 to form an outer shape, the interior The tub 24 for processing the tableware disposed in the. The cabinet 20 and the tub 24 have a form in which the front surface on which the door 22 is disposed is opened.

The dishwasher 10 according to the present embodiment may include a dispenser 120 for storing the detergent put by the user and injecting the detergent into the tub 24 in the washing step. The dispenser may be disposed in the door 22.

Cabinet 20 according to the present embodiment forms an outer shape, one side may be open. One side of the cabinet 20 according to the present embodiment may be formed in the outside air inlet hole 222 through which air is introduced into the outside air inlet 220. In addition, an outside air outlet (not shown) through which the heat exchanged outside air is discharged may be formed at the other side of the cabinet 20.

The tub 24 forms a space in which the dishes are placed to wash the dishes. The tub 24 according to the present embodiment may form an air guide hole (not shown) at one side to reduce the pressure by discharging air to the outside when the pressure increases therein.

Dishwasher 10 according to the present embodiment is a rack (30, 32) for receiving the dishes in the tub 24, a spray module for spraying the washing water toward the dishes accommodated in the rack (30, 32) and the spray A sump 26 for supplying the washing water to the module and a washing pump 50 for pumping the washing water stored in the sump 26 into the injection module are included.

The injection module according to the present embodiment may be disposed on the lower side of the rack, and may include an injection arm for spraying the washing water toward the dishes accommodated in the rack, and a supply pipe for supplying the washing water to the injection arm. In addition, the injection module may further include a top nozzle 34 for spraying the washing water toward the rack (30, 32) disposed on the lower side from the tub 24. The injection arm according to the present embodiment is disposed below the upper rack 30, and the upper injection arm 100 for spraying the washing water toward the upper rack 30, and the lower spraying spraying water toward the lower rack 32. It may be divided into partial sandstone 38.

The dishwasher 10 further includes a washing motor 52 driving the washing pump 50, and the washing motor 52 may be a BLDC motor capable of controlling the rotation speed. Since the washing motor 52 is a BLDC motor, a target revolution (revolution per minute) can be set. When the RPM of the BLDC motor is changed, the pumping force of the washing pump 50 is changed.

Dishwasher 10 according to this embodiment is connected to the water supply module 60, the sump 26 for supplying water to the sump 26 or the injection module, the drain module 62 for discharging the washing water to the outside, sump ( It may further include a filter module 70 installed in the 26) to filter the washing water and a washing water heating module 56 installed in the sump 26 to heat the washing water.

The tub 24 is provided with

racks

30 and 32 in which washing objects such as tableware are accommodated. In the present embodiment, the dishwasher 10 may include at least one or

more racks

30 and 32. The

racks

30 and 32 according to the present exemplary embodiment include a lower rack 32 disposed below the tub 24 and an upper rack 30 disposed above the lower rack 32.

The dishwasher 10 according to the present embodiment may include at least one spray arm and a top nozzle 34. The dishwasher 10 according to the present exemplary embodiment includes a lower sandstone 38 and a washing object stored in the upper rack 30 provided in the tub 24 to wash the washing object stored in the lower rack 32. The upper injection arm 100 for washing, the top nozzle 34 is positioned on the top of the tub 24 for spraying the washing water.

The supply pipe according to the present embodiment supplies the washing water supplied from the washing pump 50 to the

injection arms

38 and 100 and the top nozzle 34.

The supply pipe according to the present embodiment includes a lower supply pipe 42 for supplying the washing water to the lower sandstone 38, and an upper injection pipe 100 and the upper nozzle 34, and an upper supply pipe 44 for supplying the washing water. .

The upper supply pipe 44 according to the present embodiment supplies the washing water supplied to the washing pump 50 to the top nozzle 34. The dishwasher according to the present embodiment may further include a branch pipe 46 branched from the upper supply pipe 44 to supply the washing water to the upper injection arm 100. Branch pipe 46 according to the present embodiment is connected from one side of the upper supply pipe (44). Branch pipe 46 according to the present embodiment is connected to the upper supply pipe 44 to enable height adjustment. The branch pipe 46 according to the present embodiment is disposed below the upper rack 30.

Branch pipe 46 may be adjusted to be separated from the upper rack 30 in accordance with the type or amount of dishes arranged in the upper rack (30). Branch pipe 46 according to the present embodiment is connected to the upper supply pipe 44 through the branch pipe connection 47.

Branch pipe 46 is connected to the upper supply pipe 44 and the height adjustable at one end. Branch pipe 46 according to this embodiment is capable of height adjustment in three stages.

The dishwasher 10 according to the present embodiment includes a flow path switching unit 40 for supplying the washing water stored in the sump 26 to the upper supply pipe 44 and / or the lower supply pipe 42.

The flow path switching unit 40 according to the present embodiment may include a flow path switching motor (not shown) that generates rotational force and a rotating plate (not shown) that rotates by the flow path switching motor to control the flow of the washing water. The rotating plate according to the present embodiment may selectively open and close a plurality of connectors (not shown) formed where the plurality of supply pipes are branched. A plurality of switching holes (not shown) may be formed in the rotating plate. The rotating plate is rotated step by step by the flow path switching motor. When the rotating plate is rotated by the flow path switching motor, the plurality of switching holes formed in the rotating plate are positioned at a position corresponding to at least one of the plurality of connectors, and the washing water flowing from the washing pump 50 is provided with a plurality of

injection arms

38 and 100. And toward the at least one of the top nozzles 34.

The washing water discharged from the sump 26 through the washing pump 50 moves to the flow path switching part 40 via the pump pipe 48. The flow path switching unit 40 may supply the washing water introduced into the sump to at least one tube of the plurality of

injection arms

38 and 100 and the top nozzle 34.

The upper injection arm 100 may be located below the upper rack 30. The upper injection arm 100 is preferably rotatably coupled to the branch pipe 46 so as to be rotated by the repelling force of the washing water when spraying the washing water.

The top nozzle 34 is disposed at a position higher than the upper rack 30. The top nozzle 34 is disposed above the tub 24. The top nozzle 34 receives the washing water from the upper supply pipe 44 and injects the washing water into the upper rack 30 and the lower rack 32.

The water supply module 60 is configured to supply water to the sump 26 by receiving water from the outside, and opens and closes the water supply valve 65 to supply external water to the sump 36. In this embodiment, the water is supplied to the sump 26 via the filter module 70. The drainage module 62 is for discharging the wash water stored in the sump 26 to the outside, and is composed of a drainage pipe 64 and a drainage pump 66.

The filter module 70 is used to filter foreign substances such as food waste contained in the washing water, and is disposed on the flow path of the washing water flowing from the tub 24 to the sump 26.

To this end, the sump 26 may be formed with a filter mounting portion 62 in which the filter module 70 is installed, and a filter flow path connecting the filter mounting portion and the inside of the sump 26 may be disposed.

The dishwasher according to the present embodiment may include a water level detection unit for detecting the water level in the tub. The water level detecting unit according to the present exemplary embodiment includes a floater (not shown) mounted therein for detecting the water level in the tub 24, and a water level gimji sensor (not shown) that detects the level of the floater to detect the level. Can be.

The dishwasher according to the present embodiment may further include an input unit (not shown) for receiving a command from the user and a display unit (not shown) for displaying a progress state or displaying a notification to the user. The input unit may use a touch input method or a button input method, and the display unit may use a display or a warning lamp.

3 is a view showing a dispenser according to an embodiment of the present invention. 4 is a plan view of the upper injection rock according to an embodiment of the present invention. 5A is a view illustrating a first spray unit in which a dispenser spray nozzle is disposed according to an embodiment of the present invention. 5B is a view illustrating a second injection unit in which a dispenser injection nozzle is disposed according to an embodiment of the present invention. 6A is a view for explaining an arrangement of the upper injection rock at the first height according to an embodiment of the present invention. 6B is a view for explaining the arrangement of the upper injection rock at the second height according to an embodiment of the present invention. 6C is a view for explaining the arrangement of the upper injection rock at the third height according to the embodiment of the present invention.

Hereinafter, a dispenser, an injection arm, and a relationship between them according to an embodiment of the present invention will be described with reference to FIGS. 3 to 6C.

The dispenser 120 according to the present embodiment forms a space for temporarily storing the detergent. The dispenser 120 according to the present embodiment may be disposed inside the door 22. The dispenser 120 according to the present embodiment may be disposed above the upper injection arm 100.

The dispenser 120 may include a case 122 forming an appearance. A chamber 124 may be formed in the case 122 to be concave to temporarily accommodate a detergent. An opening 126 may be formed at one side of the case 122 so as to open in the tub 24 in the chamber 124.

The chamber 124 may have an opening 126 opened in the tub 24 inward. The dispenser 120 may further include a cover 128 that opens and closes the open opening 126 of the chamber 124. The cover 128 may close the opening 126 in the preliminary washing step of removing dirt from the dish without detergent, and open the opening 126 in the main washing step of washing the dish using detergent.

The space formed by the chamber 124 according to the present exemplary embodiment may be formed to be inclined downward toward the opening 126 in which the lower surface is opened so that the detergent is easily discharged. In addition, the opening 126 may be formed to have a size to allow the washing water injected from the injection arm to be introduced into the chamber 124, which will be described below.

The dispenser 120 may further include a rinse supply unit 130 for selectively supplying a rinse to one side.

The rinse supply unit 130 according to the present embodiment may provide a space for temporarily storing the rinse therein, and may be opened so that the rinse is supplied into the tub 24 on one side. In addition, the rinse supply unit 130 may further include a rinse supply unit cover 132 for opening and closing the open portion.

The

injection arms

38 and 100 according to the present exemplary embodiment include a plurality of injection nozzles 101 having injection holes 101a for spraying washing water into the tub 24. The

injection arms

38 and 100 according to the present embodiment may include a lower part sandstone 38 disposed below the lower rack 32 and an upper injection arm 100 disposed below the upper rack 30. Can be. Hereinafter, the upper injection arm 100 according to the present embodiment will be described with reference to FIGS. 4 to 6C. However, the configuration and arrangement of the upper injection rock 100 described below may be applied to the lower portion sandstone 38.

Referring to FIG. 4, the upper injection arm 100 according to the present embodiment includes 16 injection nozzles. Angles to which the injection holes formed in each of the sixteen injection nozzles face may be formed differently from each other.

Spray holes formed in each of the plurality of spray nozzles 101 according to the present embodiment are formed to spray washing water in different directions. The spray nozzle 101 according to the present embodiment includes a dispenser spray nozzle 102 for spraying the washing water toward the opening 126 of the dispenser, and a dish spray nozzle for spraying the washing water toward the dishes placed on the upper rack 30. 104). The spray nozzle 101 according to the present embodiment includes an outer spray nozzle 106 disposed at an outer end of the spray arm. The outer spray nozzle 106 according to the present embodiment may constitute a part of the dish spray nozzle 104.

The upper injection arm 100 according to the present embodiment includes a dispenser injection nozzle 102 for spraying washing water into the chamber 124 of the dispenser 120. The dispenser injection nozzle 102 may be part of the plurality of injection nozzles 101.

At least two dispenser spray nozzles 102 according to the present embodiment are installed. The dispenser injection nozzle 102 according to the present embodiment may be installed in consideration of the height at which the upper injection arm 100 is adjusted. 6A to 6C, the upper injection arm 100 according to the present embodiment may adjust the height in three steps.

6A to 6C, the upper injection arm 100 according to the present embodiment is positioned at a distance from the first height H1 and the upper rack 30 at the closest distance to the upper rack 30. The height can be adjusted in three stages of the second height H2 and the third height H3 located at the distance between the first height H1 and the second height H2. The upper injection arm 100 according to the present embodiment has three dispenser injection nozzles for spraying the washing water into the opening of the dispenser 120 at each of the first height H1, the second height H2, and the third height H3. 102 may be installed.

The upper injection arm 100 according to the present embodiment is moved in the order of the first height (H1), the third height (H3), the second height (H2), the distance from the upper rack 30 is increased. .

The dispenser spray nozzle 102 according to the present embodiment has a dispenser at the first dispenser spray nozzle 102a and the second height H2 that spray washing water from the first height H1 to the opening 126 of the dispenser 120. The second dispenser spray nozzle 102b for spraying the washing water into the opening 126 of the 120 and the third dispenser spray nozzle 102c for spraying the washing water into the opening 126 of the dispenser 120 at the third height H3. ).

Referring to FIG. 6A, the first dispenser injection nozzle 102a may be a virtual horizontal line X-X 'formed in a direction in which the upper injection arm 100 extends, and an upward direction from the horizontal line X-X'. The inclination angle θ1y formed by the direction toward the washing water sprayed from the first dispenser spray nozzle 102a may be formed in a range of 68 ° to 73 °. The first dispenser injection nozzle 102a according to the present embodiment is disposed outside the outer wire 31 of the upper rack 30. That is, the first dispenser injection nozzle 102a according to the present exemplary embodiment is disposed outside the imaginary vertical line Y-Y 'extending vertically from the outer wire 31 in the vertical direction U-D.

Referring to FIG. 6B, the second dispenser injection nozzle 102b is a virtual horizontal line X-X 'formed in a direction in which the upper injection arm 100 extends, and an upward direction from the horizontal line X-X'. In addition, the inclination angle θ2y formed by the direction toward the washing water sprayed from the second dispenser spray nozzle 102b may be formed in a range of 33 ° to 38 °. The second dispenser spray nozzle 102b according to the present embodiment is disposed inside the outer wire 31 of the upper rack 30. That is, the second dispenser injection nozzle 102b according to the present exemplary embodiment is disposed inward from an imaginary vertical line Y-Y 'extending vertically from the outer wire 31 in the vertical direction U-D.

Referring to FIG. 6C, the third dispenser injection nozzle 102c may have an imaginary horizontal line X-X 'formed in a direction in which the upper injection arm 100 extends, and an upward direction from the horizontal line X-X'. In addition, the inclination angle θ3y formed by the direction toward the washing water sprayed from the third dispenser injection nozzle 102c may be formed in a range of 57 ° to 63 °. The third dispenser injection nozzle 102c according to the present embodiment is disposed below the outer wire 31 of the upper rack 30. That is, the third dispenser injection nozzle 102c according to the present exemplary embodiment may be disposed on an imaginary vertical line Y-Y ′ extending vertically from the outer wire 31 in the vertical direction U-D.

Referring to FIG. 4, an imaginary horizontal line X-X 'extending in the left-right direction Ri'-Le' in which the first injection part 110 and the second injection part 112 of the upper injection arm 100 are formed. ), The surfaces formed by the dispenser spray nozzles of the first dispenser spray nozzle 102a, the second dispenser spray nozzle 102b, and the third dispenser spray nozzle 102c in the front-rear direction F'-R ' The inclination angles θ1x, θ2x, and θ3x to be formed may be formed in a range of 25 ° to 35 °.

The upper injection arm 100 according to the present embodiment is rotatably connected to the branch pipe 46. The upper injection arm 100 according to the present embodiment extends to one side from the rotation center connected to the branch pipe 46, and includes a first injection unit 110 and a first injection unit 110 in which a plurality of injection nozzles are disposed. It may extend in the opposite direction, and may include a second injection unit 112 is disposed a plurality of injection nozzles.

When the washing water flowing to the washing pump 50 is supplied to the upper injection arm 100 through the supply pipe, the washing water is sprayed through a flow path formed in the first injection unit 110 and the second injection unit 112. It may be supplied to the nozzle 101.

At least one dispenser injection nozzle 102 may be disposed in each of the first injection unit 110 and the second injection unit 112 of the upper injection arm 100 according to the present embodiment. The first dispenser injection nozzle 102a and the second dispenser injection nozzle 102b are disposed in the first injection part 110 according to the present embodiment, and the third dispenser injection nozzle 102c is disposed in the second injection part 112. Is placed.

Top nozzle 34 according to the present embodiment is disposed at the end of the upper supply pipe (44). The top nozzle 34 according to the present embodiment is disposed above the tub 24. Top nozzle 34 according to the present embodiment is disposed on the upper side (U) of the upper rack (30).

7 is a flowchart illustrating a dish washer control method according to an embodiment of the present invention. 8 is a flowchart illustrating a dispenser injection step according to an embodiment of the present invention.

Hereinafter, a method of controlling the dish washing machine according to the present embodiment will be described with reference to FIGS. 7 to 8.

The dishwasher washes the dishes while sequentially or selectively performing the preliminary washing (S100), main washing (S300), rinsing (S400), and drying (S500) operations.

Briefly explaining the entire operation of the dish washer, pre-washing (S100) is a mechanical washing is performed by spraying the washing water to the dish. Herein, the mechanical washing refers to washing that removes foreign matters on the tableware by using water pressure of washing water without using a detergent or the like. That is, in the pre-cleaning step to remove the protein-based dirt with the wash water, it goes through the water supply, washing and draining step.

The main washing (S300) is chemically washed in the dish using a detergent. Herein, the chemical cleaning refers to washing to remove foreign substances on the dish using the washing water in which the washing detergent is dissolved. Therefore, in the washing step, the dishes are washed using the washing water in which the detergent is dissolved, and are subjected to the water supply, washing and draining steps. This washing may remove foreign substances by heating the washing water by a heater.

Rinsing (S400) is a step of washing the dishes after the washing step using water, and undergoes a water supply, rinsing and draining steps. In the rinsing step (S400), a separate rinse detergent may be used. In addition, the step of heating the water by the heater to proceed with the rinsing process, the water supply, rinsing and draining step, a heating rinsing step of heating the water in the rinsing process may be added.

Drying (S500) is a process of removing water from the dishes that have been washed and rinsed to remove the water remaining in the dishes using the air heated by the heater.

In the main washing step (S300), the cover 128 of the dispenser 120 is opened, and the detergent temporarily stored in the dispenser 120 is supplied into the tub 24. In this washing step (S300), using the detergent introduced into the tub 24, it is possible to remove the dirt on the tableware.

In the main washing step (S300), it is possible to heat the wash water using a heater. In the main washing step (S300), the top nozzle 34, the upper injection arm 100, and the lower part sandstone 38 may be evenly or simultaneously sprayed to wash the dishes. The main washing step S300 may be performed a plurality of times. In each of the plurality of main wash steps, there may be some differences in the temperature of the wash water and the stroke time. In addition, in each of the plurality of main washing stages, there may be a difference in the number and the supply amount of the washing water supplied to the top nozzle 34, the upper injection arm 100 and the lower part sandstone (38).

The dishwasher according to the present invention further includes a dispenser injection step S200 for spraying washing water into the dispenser 120 before the main washing step S300. In the dispenser spraying step S200 according to the present exemplary embodiment, the washing water is sprayed into the opening 126 of the dispenser 120 to remove the detergent remaining in the dispenser 120.

Dispenser injection step (S200), the step of supplying the washing water (S210), opening the opening 126 of the dispenser 120 (S220), heating the washing water (S230) and the washing water into the dispenser 120 It may include the step of spraying (S240).

In the dispenser injection step (S200), the washing water used in the main washing step (S300) is supplied. Therefore, the main washing step S300 may be performed with the washing water supplied in the step S210 of supplying the washing water.

In step S220 of opening the opening 126 of the dispenser 120, the cover 128 is moved to open the opening 126. As the opening 126 is opened, the detergent temporarily stored in the dispenser 120 is supplied into the tub 24. The inside of the dispenser 120 is formed to be inclined at the bottom, when the opening 126 is opened, the detergent inside the dispenser 120 may be introduced into the tub 24. However, in the case of powder detergent, the entire detergent may not be supplied into the tub 24, and a part of the detergent may remain in the dispenser 120.

In step S230 of heating the washing water, the washing water is heated using the heating module 56. As the washing water is heated, the detergent introduced into the tub 24 may be dissolved in the washing water, and may be effective in decontamination of the dishes.

In the step (S240) of spraying the washing water into the dispenser 120, the washing water is supplied to the upper injection arm 100. Before the spraying the washing water into the dispenser 120 (S240), adjusting the flow path switching unit 40 may be performed (S235).

Therefore, in the step of spraying the washing water into the dispenser 120, the washing water can be supplied only to the upper injection arm 100.

The upper injection arm 100 according to the present embodiment includes a dispenser injection nozzle 102 for spraying washing water into the dispenser 120. The upper injection arm 100 according to the present embodiment includes a plurality of dispenser injection nozzles 102. One of the first dispenser injection nozzles 102a, the second dispenser injection nozzles 102b, and the third dispenser injection nozzles 102c is flushed to the opening 126 of the dispenser 120 according to the height of the upper injection arm 100. Spray it.

In the step of spraying the washing water into the dispenser 120 (S240), by adjusting the flow path switching unit 40, the washing water is supplied to the upper injection arm (100). In the step of spraying the washing water into the dispenser 120 (S240), the washing water is supplied into the dispenser 120, the detergent remaining in the dispenser 120 is introduced into the tub 24 together with the washing water. Can be.

Although the above has been illustrated and described with respect to preferred embodiments of the present invention, the present invention is not limited to the specific embodiments described above, but in the art to which the invention pertains without departing from the spirit of the invention as claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

[Description of the code]

10: dishwasher 20: cabinet

22: door 24: tub

30: upper rack 32: lower rack

34: top nozzle 38: lower part sandstone

100: upper injection rock 101: injection nozzle

102a: first dispenser injection nozzle 102b: second dispenser injection nozzle

102c: third dispenser injection nozzle 110: first injection unit

112: second injection unit 120: dispenser

Claims

A cabinet having an outer shape and having one side opened;

A door configured to open and close the opened front of the cabinet;

A tub disposed inside the cabinet and forming a space for washing dishes;

A dispenser disposed at one side of the door and supplying a detergent into the tub; And

It has a plurality of injection nozzles having a plurality of injection nozzles are formed in the opening in different directions so that the washing water is sprayed, and includes a spraying arm is adjusted in at least two stages,

And the plurality of spray nozzles comprises at least two dispenser spray nozzles configured to spray washing water into the dispenser according to a height at which the spray arm is adjusted.
The method of claim 1,

The rack is disposed inside the tub, and further includes a rack on which tableware is mounted.

The injection arm is rotatably disposed on the lower side of the rack,

The dispenser is disposed on one side of the rack spaced apart.
The method of claim 1,

The injection arm is divided into a first injection unit extending to one side with respect to the rotation axis rotates the injection arm, and a second injection unit extending in the opposite direction to the first injection unit based on the rotation axis,

And at least one dispenser spray nozzle having a spray hole formed in each of the first spray unit and the second spray unit to spray washing water into the dispenser.
The method of claim 3, wherein

The dispenser spray nozzle,

A first dispenser spray nozzle for spraying washing water into the dispenser at the highest height of the spray arm,

A second dispenser spray nozzle for spraying washing water into the dispenser at the lowest height of the spray arm,

The first dispenser injection nozzle is spaced apart from the center of the injection arm is a greater than the distance that the second dispenser injection nozzle is spaced apart from the center of the injection arm dishwasher.
The method of claim 4, wherein

The angle formed by the direction toward the washing water sprayed to the first dispenser spray nozzle in an upward direction from an imaginary horizontal line formed in a direction in which the spray arm extends is sprayed from the second dispenser spray nozzle in an upward direction from the imaginary horizontal line. The dishwasher is formed smaller than the angle formed by the direction of the washing water.
A cabinet having an outer shape and having one side opened;

A door configured to open and close the opened front of the cabinet;

A tub disposed inside the cabinet and forming a space for washing dishes;

A dispenser disposed at one side of the door and supplying a detergent into the tub;

An upper rack disposed above the tub and on which tableware is placed;

A lower rack disposed inside the tub, disposed below the upper rack, and equipped with dishes;

Lower part sandstone for spraying the washing water from the lower side of the lower rack to the upper side;

An upper spraying arm disposed at a lower side of the upper rack and spraying the washing water upward; And

And at least two dispenser spray nozzles disposed on the upper spray arm and spraying the washing water to the dispenser according to a height at which the upper spray arm is adjusted.
The method of claim 6,

The dispenser spray nozzle,

A first dispenser spray nozzle for spraying washing water into the dispenser at the highest height of the spray arm,

A second dispenser spray nozzle for spraying washing water into the dispenser at the lowest height of the spray arm;

And a third dispenser spray nozzle formed at a height between the first dispenser spray nozzle and the second dispenser spray nozzle,

The first dispenser injection nozzle is disposed farther from the center of the upper injection arm than the third dispenser injection nozzle,

The second dispenser spray nozzle is disposed closer to the center of the jetting arm than the third dispenser spray nozzle.
A pre-washing step in which mechanical washing of the tableware is performed by spraying the washing water;

After the preliminary washing step, the main washing step of chemically cleaning the dish using a washing detergent;

A rinsing step of washing the dishes passed through the main washing step with water; And

And a dispenser spraying step of spraying the washing water into the dispenser in which the detergent is temporarily stored before the main washing step.
The method of claim 8,

The dispenser injection step,

Supplying water into the tub;

Opening the opening formed in the dispenser;

The control method of the dishwasher comprising the step of supplying the washing water to the opening of the dispenser through the injection arm for spraying the washing water.
The method of claim 9,

The dispenser injection step,

After the opening of the dispenser is opened,

And adjusting a flow path such that the washing water is supplied only to the upper spraying arm among the upper spraying arm disposed inside the tub and the lower partial sanding rock disposed below the upper spraying arm.
The method of claim 9,

The dispenser injection step,

The control method of the dishwasher further comprising the step of heating the supplied water.