KR100258617B1 - Dishwasher - Google Patents

Abstract

PURPOSE: A dishwasher is provided to inject washing water to a dish contained in a dish basket and to improve efficiency of the dishwasher. CONSTITUTION: A dish washer comprises an auxiliary nozzle(21) having plural branch arms; a fixing shaft member(49) of a pipe shape installed along rotating shaft line of the auxiliary nozzle; a moving shaft member(41) of the pipe shape concentrically geared with the fixing shaft member to rotate; an elevating unit lifting the auxiliary nozzle by moving with right-reverse rotation of the auxiliary nozzle through mounted between the moving shaft member and the fixing shaft member; and an injection hole opening and closing unit reverse rotating the auxiliary nozzle in rotating angle range by selectively opening or closing a rotating force injection hole. The injection hole opening and closing unit actuates in a specific rotating angle range of the auxiliary nozzle. Thereby, the dishwasher injects washing water to a dish basket in various angles.

Description

dish washer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher, and more particularly, to a dishwasher in which washing water is sprayed onto a tableware accommodated in a dish basket.

7 is a longitudinal cross-sectional view of a conventional dish washing machine, and FIG. 8 is a view illustrating a washing water spraying state of the jet nozzle of FIG. 7. As shown in these figures, the conventional dishwasher has a main body 101 in which the washing tank 105 is formed, and a door 103 for opening and closing the front opening of the washing tank 105. A water supply motor 107 is provided at the lower side of the washing tank 105 to supply the washing water into the washing tank 105, and a water supply pipe so that the washing water from the water supply motor 107 is supplied to the upper and lower regions of the washing tank 105. 109 are provided respectively. In addition, the upper and lower regions in the washing tank 105, the upper tableware basket 111 and the lower tableware 113 for receiving the dishes to be washed are installed to be withdrawn respectively.

Meanwhile, the upper and lower dish baskets 111 and 113 are supplied with washing water from the water supply pipes 109 provided in the upper and lower regions of the washing tank 105 to spray the upper spray nozzles 115 and the lower partial nozzles to the corresponding dish baskets 111 and 113. 117 are attached, respectively. Each of the injection nozzles 115 and 117 is formed of a hollow hollow body, and a tubular rotation shaft disposed on an extension line of the corresponding water supply pipe is formed in the central region of each of the injection nozzles 115 and 117. Each spray nozzle (115, 117) is formed with a plurality of nozzle nozzles for spraying the washing water toward the corresponding dish basket (111, 113), each spray nozzle (115, 117) has a predetermined radius of rotation to receive the washing water from the water supply pipe The washing water is sprayed toward the dish baskets 111 and 113 while rotating about the rotating shaft.

However, in the conventional dishwasher, the nozzle holes 119 are formed in the rod-shaped injection nozzles 115 and 117 so as to be spaced apart from the rotation axis by a predetermined distance. When the nozzles 115 and 117 rotate, the nozzle holes 119 are predetermined. The washing water is sprayed toward the dish baskets 111 and 113 while rotating along the rotational trajectory of the. Accordingly, the washing water is concentrated in the corresponding areas of the nozzle holes 119 in the dish baskets 111 and 113, and the washing water is relatively sprayed in the areas corresponding to the nozzle holes 119. There is a problem that is insufficient.

Accordingly, it is an object of the present invention to provide a dishwasher capable of spraying washing water in a plurality of dishes contained in a dish basket, thereby improving dishwashing efficiency.

1 is a longitudinal sectional view of the dishwasher according to the present invention;

2 is an exploded perspective view of the auxiliary nozzle region of FIG. 1;

3 and 4 are longitudinal cross-sectional views of the assembled elevating and lowering states of the auxiliary nozzle region of FIG. 2, respectively.

5 and 6 are each an operational state diagram of the auxiliary nozzle region of FIG.

7 is a longitudinal cross-sectional view of a conventional dishwasher,

8 is a washing water spray state diagram of the injection nozzle of FIG.

<Explanation of symbols for the main parts of the drawings>

1: body 3: door

5: washing tank 7: water motor

11: Upper tableware basket 13: Lower tableware basket

15: upper injection nozzle 16, 17: injection arm

18: lower part nozzle 21: auxiliary nozzle

24: balance portion 27, 28: rotational force injection hole

29: opening and closing 31: slider

41: movable shaft member 45: gap member

49: fixed shaft member 60: stopper

The object is, according to the present invention, the main body to form a washing tank, the dish basket accommodated in the washing tank, and a predetermined distance away from the dish basket is installed rotatably about the main axis of rotation, toward the dish basket A dishwasher having a spray nozzle having a plurality of spray arms having at least one nozzle hole for spraying washing water, the dishwasher being freely rotatable about a sub-rotation axis parallel to the main axis of rotation and in communication with the spray arm. Coupled to be coupled to receive the wash water, a plurality of branching arms formed with at least one auxiliary nozzle hole toward the dish basket, and a pair of mutually opened along the rotation plane horizontally in the radial direction at a position away from the sub-rotation axis An auxiliary nozzle having a rotational force sprayer; A tubular fixed shaft member fixed to the injection nozzle along a rotation axis of the auxiliary nozzle, a tubular movable shaft member which is concentrically rotatably engaged with the fixed shaft member to the auxiliary nozzle, and the fixed shaft member. And elevating means interposed between the movable shaft member and the elevating nozzle in connection with the forward and reverse rotation of the auxiliary nozzle, and alternately rotating the rotational force injection hole at both sides of the predetermined range of the rotation angle of the auxiliary nozzle. It is achieved by the dishwasher, characterized in that it comprises a spray opening and closing means for selectively opening and closing to reverse and rotate the auxiliary nozzle within the rotation angle range.

Here, the lifting means preferably has a first screw portion formed on any one of the fixed shaft member and a second screw portion formed on the other side and engaged with the first screw portion.

It is preferable that the said 1st screw part has a continuous thread, and the said 2nd screw part is formed in the shape of an intermittent protrusion.

The movable shaft member has a fixed flange portion extending in the radial direction, the auxiliary nozzle has a fixed tubular portion for receiving the fixed flange portion and a male screw portion formed, the fixed flange portion is a cap member fastened to the male screw portion of the fixed tubular portion It is preferable to be prevented from leaving by.

Preferably, the auxiliary nozzle has a plurality of branch arms, and each branch arm has at least one auxiliary nozzle hole facing the dish basket.

Preferably, the branch arms are arranged within a 180 degree region of the rotation plane of the auxiliary nozzle, and the branch arms are preferably arranged radially.

The auxiliary nozzle is preferably provided with a balance portion for weight compensation on the opposite side of the branch arms, the rotational force injection hole is preferably formed in the balance portion.

And, the injection hole opening and closing means is installed in the balance portion for opening and closing the rotational force injection hole, and installed in the balance portion to support the opening and closing body to move between the two rotational force injection hole and the rotational force injection hole It is preferable to include a slider for blocking at least one and a stopper protruding from the injection nozzle to forward and backward sliding the slider at the limit of the rotation angle range.

It is preferable that the slider has a sliding portion on the bar exposed at both ends and a pair of acting portions bent downward from both ends of the sliding portion to both sides in the rotational direction of the stopper.

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

1 is a longitudinal sectional view of the dishwasher according to the present invention. As shown in this figure, the dishwasher has a main body 1 in which the washing tank 5 is formed, and a door 3 for opening and closing the front opening of the washing tank 5 by vertically rotating. A water supply motor 7 is provided at the lower side of the washing tank 5 to supply the washing water into the washing tank 5, and a water supply pipe may be provided at the upper and lower regions of the washing tank 5 to supply the washing water from the water supply motor 7. (9) is provided respectively. In addition, the upper and lower regions in the washing tank 5 is provided with a top table basket 11 and a bottom table basket 13 to accommodate the dishes to be washed, respectively.

On the other hand, the upper and lower tableware baskets (11, 13) receives the washing water from the water supply pipe (9) provided in the upper and lower regions in the washing tank (5) and the upper injection nozzle (15) for spraying to the corresponding dish basket (11, 13) And a lower part four nozzle 18 are respectively attached. In the present invention, since the upper injection nozzle 15 and the lower partial nozzle 18 have almost the same configuration, the following description will be given only to the lower partial nozzle 18 for convenience of description.

The lower partial nozzle 18 is formed of a hollow hollow body and has a pair of injection arms 16 and 17 arranged to face each other about the main axis of rotation. The central region of the lower part nozzle (18) is formed with a tubular rotary shaft disposed on an extension line of the corresponding water supply pipe (9), and the upper surface of the lower part nozzle (18) to spray the washing water toward the dish basket (13). A plurality of nozzle holes 19 are formed to be possible.

In addition, the free end portion of the injection arm 17 has a sub-rotation axis parallel to the main rotation axis of the lower part yarn nozzle 18, and the auxiliary nozzle 21 is coupled so as to be freely rotatable with respect to the sub-rotation axis. The auxiliary nozzle 21 has a plurality of branch arms and a balance portion which are arranged to face each other about the sub-rotation axis.

FIG. 2 is an exploded perspective view of the auxiliary nozzle region of FIG. 1, and FIGS. 3 and 4 are longitudinal cross-sectional views of the assembled elevating state of the auxiliary nozzle region of FIG. 2, respectively. FIGS. 5 and 6 are views of the auxiliary nozzle region of FIG. 1, respectively. Rotational operation state diagram. As shown in these figures, each branch arm 23 is formed radially with respect to the sub-rotation axis, and each branch arm 23 has different spray angles so as to spray the washing water toward the dish basket 13. The auxiliary nozzle holes 25 having are formed at different positions, respectively. Here, the branch arms 23 are preferably arranged in the 180 degree region of the rotation plane of the auxiliary nozzle 21.

The balance part 24 is provided with a pair of rotational force injection holes 27 and 28 which are opened so as to face each other along the rotation plane of the auxiliary nozzle 21 so as to change the rotational direction of the auxiliary nozzle 21. In addition, the balance part 24 is provided with the slider accommodation hole 37 which accommodates the slider 31 mentioned later so that rotation is possible in the position adjacent to the rotational force injection hole 27,28. In this balance part 24, the injection opening and closing means is provided so that the auxiliary nozzle 21 may be reverse-reversely rotated within the predetermined rotation angle range of the auxiliary nozzle 21. As shown in FIG.

The injection hole opening and closing means is provided in the balance section 24 and connected to one region of the slider 31 and the slider 31 provided to alternately open and close the rotational force injection holes 27 and 28, and the rotational force injection hole 27. , 28 and a stopper 60 protruding from the injection arm 17 to protrude and slide the slider 31 forward and backward at the limit of the rotation angle range of the auxiliary nozzle 21. The slider 31 is bent downward from both ends of the sliding part 32 and the sliding part 32 so that both ends are exposed to the exterior of the slider accommodation hole 37, and it acts on both sides of the rotation direction of the stopper 60. A pair of acting portions 33 are provided.

On the other hand, the fixed arm number is formed on the injection arm 17 along the rotation axis of the auxiliary nozzle 21, the tubular fixed shaft member 49 is fixedly installed to supply the washing water from the water supply pipe 9 to the auxiliary nozzle 21. A molten hole 51 is formed, and the auxiliary nozzle 21 is provided with a movable shaft member 41 which is rotatably engaged with the fixed shaft member 49 to be relatively rotatable with the fixed shaft member 49.

The movable shaft member 41 extends in a radial direction and is fixed to the fixed flange 42 for fixing the auxiliary nozzle 21, and the auxiliary nozzle 21 is lifted up and down on the outer diameter surface of the movable shaft member 41. A pair of intermittent protrusions 43 are formed to reduce the flow. One region is fixed to the injection arm 17 in the fixed shaft member 49, and a continuous thread 47 is formed on the inner diameter surface of the fixed shaft member 49. In addition, the auxiliary nozzle 21 is provided with a male screw portion and is provided with an unillustrated fixed tubular portion accommodating the fixing flange 42. The fixed flange portion 42 accommodated in the fixed tubular portion is coupled to the cap member 45 fastened to the male screw portion of the fixed tubular portion, thereby preventing the detachment of the fixed flange 42.

By such a configuration, when the water supply motor 7 is operated by an external operation so that the washing water is supplied to the injection arms 16 and 17 through the water supply pipe 9, the injection arms 16 and 17 are supplied with the hydraulic pressure of the supplied washing water. It rotates about the main axis of rotation. At this time, the washing water is sprayed toward the dish basket 13 through the plurality of nozzle holes 19 formed in the lower part nozzle (18).

On the other hand, a part of the washing water flowing from the injection arm 17 to the auxiliary nozzle 21 is sprayed toward the dish basket 13 through the auxiliary nozzle hole 25 of the branch arm 23, the balance portion 24 The auxiliary nozzle 21 is rotated in the direction opposite to the washing water spraying direction while being discharged through the rotational force spraying hole 27 of FIG. When the auxiliary nozzle 21 rotates about the sub-rotation axis and the acting portion 33 of the slider 31 comes into contact with the stopper 60, the opening and closing body 29 coupled to the sliding portion 32 is interlocked. Sliding movement to block the rotational force injection hole (27). Then, the washing water is discharged through the rotational force injection hole 28 and the auxiliary nozzle 21 is rotated by changing the direction.

When the washing water flows into the auxiliary nozzle 21 and is discharged through the rotational force injection hole 27 so that the auxiliary nozzle 21 rotates about the negative rotation axis, it protrudes into the movable shaft member 41 of the auxiliary nozzle 21. The intermittent protrusion 43 is formed to move up along the thread 47 formed in the fixed shaft member 49. As a result, the auxiliary nozzle 21 rotates while spraying the washing water and moves upward along the negative rotation axis direction. Then, when the acting portion 33 is in contact with the stopper 60 and the rotational force injection hole 27 is blocked so that the rotation direction of the auxiliary nozzle 21 is changed, it protrudes into the movable shaft member 41 of the auxiliary nozzle 21. Intermittent protrusion 43 is formed so as to move down along the screw thread 47 formed on the fixed shaft member (49).

As described above, the auxiliary nozzle having a plurality of branch arms, a tubular fixed shaft member fixed to the spray nozzle along the rotation axis of the auxiliary nozzle, and the auxiliary nozzle are concentrically rotatable with the fixed shaft member. Interlocking tubular movable shaft members, elevating means interposed between the fixed shaft members and the movable shaft members to lift and lower the auxiliary nozzles in linkage with the reverse rotation of the auxiliary nozzles, and a predetermined rotation angle of the auxiliary nozzles. By alternately and selectively opening and closing the rotational force injection hole at both sides of the range to provide the injection hole opening and closing means for forward and reverse rotation of the auxiliary nozzle within the rotation angle range to interact, washing water at various angles toward the dish basket Can be sprayed.

As described above, according to the present invention, the washing water can be sprayed to the dishes contained in the dish basket in multiple ways, thereby providing a dish washing machine capable of improving the washing efficiency of the dishes.

Claims (11)

A main body forming a washing tank, a dish basket housed in the washing tank, and at least one nozzle ball spaced apart from the dish basket by a predetermined distance to be rotatable about a main rotation axis and spraying the washing water toward the dish basket are provided. In a dishwasher having a spray nozzle having a plurality of spray arms formed, A plurality of branching arms which are freely rotatable with respect to the sub-rotation axis parallel to the main rotational axis and connected to the injection arm to receive the washing water, and wherein at least one auxiliary nozzle hole is formed toward the dish basket. And an auxiliary nozzle having a pair of rotational force injection holes mutually opened along the rotational plane in the radial direction at a position spaced apart from the sub-rotation axis; A tubular fixed shaft member fixed to the injection nozzle along a rotation axis of the auxiliary nozzle; A tubular movable shaft member which is concentrically coupled to the auxiliary nozzle so as to be relatively rotatable with the fixed shaft member; An elevating means interposed between the fixed shaft member and the movable shaft member to elevate the auxiliary nozzles in linkage with the normal rotation of the auxiliary nozzles; And an injection-opening opening and closing means for rotating the auxiliary nozzle forward and backward within the rotation angle range by alternately and selectively opening and closing the rotational force injection hole at both sides of a predetermined rotation angle range of the auxiliary nozzle. syringe. The method of claim 1, And said elevating means has a first screw portion formed on one of said fixed shaft members and a second screw portion formed on the other side and engaged with said first screw portion. The method of claim 2, And the first screw portion has a continuous thread, and the second screw portion is formed in an intermittent protrusion. The method of claim 3, The movable shaft member has a fixed flange portion extending in the radial direction, the auxiliary nozzle has a fixed tubular portion for receiving the fixed flange portion and a male screw portion formed, the fixed flange portion is a cap member fastened to the male screw portion of the fixed tubular portion Dishwasher is prevented by the dishwasher, characterized in that. The method of claim 1, And the auxiliary nozzle has a plurality of branch arms, and each branch arm has at least one auxiliary nozzle ball directed toward the dish basket. The method of claim 5, And the branch arms are disposed in an area of 180 degrees of the plane of rotation of the auxiliary nozzle. The method of claim 6, And said branch arms are disposed radially. The method of claim 7, wherein The auxiliary nozzle is a dish washer, characterized in that the balance portion for weight compensation provided on the opposite side of the branch arms. The method of claim 8, The rotational force injection hole is a dish washer, characterized in that formed in the balance. The method of claim 1, The injection hole opening and closing means is installed in the balance portion for opening and closing the rotational force injection hole, and installed in the balance portion to support the opening and closing between the two rotational force injection hole and at least any of the rotational force injection hole And a stopper for blocking one and a stopper protruding from the jetting nozzle to forward and slide the slider at a limit of the rotation angle range. The method of claim 10, The slider is a dish washing machine, characterized in that the sliding portion on the bar exposed both ends, and the bending portion is extended downward from both ends of the sliding portion has a pair of acting portions on both sides of the stopper in the rotation direction.