KR0162289B1 - Dish washer - Google Patents

Abstract

The present invention relates to a washing water spraying device of a dishwasher, and in the related art, the inside of the tub is washed in a square and the washing water sprayed by the spraying arm has a circular shape, so that the washing water is not sprayed on the portion located at the edge of the tub. Because dead zones are formed, the dishes placed here are not evenly cleaned and if the spraying area is enlarged to prevent them, the inner wall of the tub is hit and there is a problem of hitting noise. The present invention controls the amount of washing water flowing into the spraying arm and sprays the spraying water by adjusting the spraying angle of the washing water according to the amount of water flowing therein. Water is sprayed on the inner surface of the tub to minimize spraying 800 Hz, and that will prevent a so as to ensure a high cleaning ability.

Description

Washing water spray device of dishwasher

1 is a front view schematically showing a typical dishwasher.

2 is a view illustrating a washing water jet unit of a conventional dishwasher.

(a) is a plan view.

(b) is a partial cross-sectional front view.

Figure 3 shows the trajectory of the washing water sprayed through the washing water spraying device of the conventional dishwasher,

(a) is a trajectory diagram showing the case where the injection into the cross section of the tub.

(b) is a trajectory diagram showing the case where the injection outside the cross-sectional area of the tub.

4 shows the dishwasher washing water jet unit of the present invention,

(a) is a plan view.

(b) is a partial cross-sectional front view.

5 shows the dishwasher washing water jet unit of the present invention,

(a) is a cross-sectional view showing a coupling state of the flow rate control means.

(b) is a sectional view showing the disassembled state of the flow control means.

(c) is a plan view of the rotating plate.

(d) is a plan view of the fixed control plate.

6 is a cross-sectional view showing a variable spray means of the dishwasher washing water spray apparatus of the present invention.

7 shows the operation of the dishwasher washing water spraying device variable spraying means of the present invention.

(a) is sectional drawing which shows the vertical injection state.

(b) is sectional drawing which shows the inclined spraying state.

8 is a trajectory diagram showing the trajectory of the washing water sprayed by the dishwasher washing water spraying device of the present invention.

Figure 9 is a cross-sectional view showing another embodiment of the dishwasher washing water spray apparatus of the present invention.

* Explanation of symbols for the main parts of the drawings

F: Washing water flow path R: Flow control means

N: variable injection means 6: injection arm

6a: injection nozzle 6d: injection path

12: fixed adjustment plate 12a: opening

12b: blocking film 13: rotating plate

13a: opening blocking membrane 13b: through hole

14: actuator 14a: through part

14b: waiter portion 14c: channel portion

14d: nozzle 14e: locking jaw

15: hinge

The present invention relates to a washing water spray device of a dishwasher, and in particular, removes the dead zone (DEAD ZOON) that does not reach the inside of the tub (TUB) in which the dish washing is performed, and the washing water is sprayed on the inner surface of the tub to generate a blow sound It relates to a washing water spray device of the dishwasher that can be prevented.

As shown in FIG. 1, a general dishwasher is provided with a case 1 having a tubular tubular shape 2 formed in a body and formed therein, and upper and lower portions of the tub 2, respectively. Upper and lower racks (Rack) (3,4) and the upper and lower racks (3,4) respectively installed in the upper and lower racks (3,4), respectively The lower injection arms (5, 6), the bottom of the tub (2) formed in the upper and lower racks (3, 4) and the washing water accumulated in the waste container (2a), and installed in the waste container (2a) to wash water A filter (7) for filtering dirt mixed in the water, a drain pump (8) installed in communication with the lower part of the waste container (2a), a centrifugal pump (9) installed in communication with the side of the waste container (2a), and An upper flow path 10 connecting the centrifugal pump 9 and the upper injection arm 5, and the lower flow path 11 connecting the centrifugal pump 9 and the lower injection arm 6 are configured. There.

The operation process of the dishwasher configured as described above is to first install the dishes to be washed in the upper and lower racks (3, 4), and detergent and washing water is supplied to the centrifugal pump (9) when the centrifugal force of the centrifugal pump (9) The washing water is sprayed through the upper and lower injection pipes (10, 11) through the upper and lower injection arms (5, 6) to wash the dishes, and the washing water washing the dishes flows into the lower portion (2a). The introduced washing water is filtered by the filter (7) and the filtered washing water is re-injected by the centrifugal pump (9) to wash the dishes while repeating this process. When the washing process is completed in this way, the washing water is discharged to the sewer by the operation of the drain pump 8.

The washing water spraying structure for spraying the washing water introduced by the centrifugal force of the centrifugal pump 9 to the rack-mounted dishes in the process, as shown in Figure 2, the washing water pressurized by the centrifugal pump 9 A locking projection 11a is formed at the end of the lower flow passage 11 through which the lower injection arm 6 passes, and the diffuser 11b is coupled to the inside of the lower flow passage 11 where the locking projection 11a is formed. It is. And a nozzle portion having a predetermined length and having a plurality of nozzles formed in communication with the injection passage 6a on the upper surface of the arm portion 6b having the injection passage 6a formed therein, and having a lower surface of the arm portion 6b. An inlet 6d is formed to allow fluid to flow into the injection passage 6a, and an arm holder 6e is formed at the edge of the inlet 6d so as to be caught and rotated by the locking protrusion 11a. It consists of a lower injection arm (6).

In addition, the nozzle unit is formed on one end of the injection nozzle (6c) and the arm portion (6b) for spraying the incoming washing water in the form of a beam BEAM (rotational force generating nozzle (6f) to generate a rotational force by injecting the washing water inclined )

The structure is the washing water pressurized by the centrifugal pump (9) to the inlet portion (6d) of the lower injection arm (6) via the diffuser (11b) coupled to the lower flow channel (11) and the lower flow channel (11). The introduced washing water is injected into the tableware through the nozzle part through the injection passage 6a. In the above process, the lower injection arm 6 is rotated while being supported by the arm holder 6e by the washing water sprayed through the rotational force generating nozzle 6f in the washing water sprayed through the nozzle unit, and is sprayed through the spray nozzle 6c. The washing water is sprayed onto the dish while forming a circle by the rotation of the lower spray arm (6).

However, in the conventional structure as described above, as shown in (a) of FIG. 3, the inside of the tub 2 to be cleaned has a square shape, and the washing water sprayed by the lower injection arm 6 has a circular shape. The dead zone (D) which is not sprayed with the washing water is formed in the portion located at the corner of the tub (2) has a disadvantage that the dishes are not evenly washed. On the other hand, in order to solve this problem, the inclined nozzle 6g for removing edges is formed to be inclined outward to enlarge the radius of the washing water sprayed on one side of the lower spray arm 6, thereby expanding the spraying area of the washing water. As shown in (b) of FIG. 3, the dead zone (D) is eliminated, but the area (C) where the washing water is sprayed on the inner wall of the tub 2 is generated, so that the washing water is sprayed on the inner wall of the tub (2). Not only the hitting noise is generated by this, but there is a problem that causes the mechanical loss.

Accordingly, an object of the present invention is to provide a washing water injector of the dishwasher which can prevent the washing water from being sprayed on the inner surface of the tub while the dead water does not reach the inside of the tub where the dish washing is performed. have.

In order to achieve the object of the present invention as described above, the washing water pressurized by the pump is installed in the washing water flow path flowing to the injection arm and flow rate control means for periodically regulating the flow rate of the washing water, and the rotatable and in communication with the washing water flow path And a variable injection means for spraying the washing water while varying the spraying angle according to the flow rate which is installed on one side of the spraying arm and adjusted by the flow rate adjusting means to be coupled to spray the washing water. A washing water spray device for a dishwasher is provided.

The flow regulating means is formed in the disc and the opening for allowing the washing water to pass through and the blocking film is formed at a predetermined angle interval fixed fixing plate installed in the washing water flow passage, and the opening in one side in correspondence with the fixed adjusting plate 1 Washing water jetting device of the dishwasher, characterized in that the opening blocking membrane is formed to block the dog and the other part is formed through the through-hole and the rotating plate coupled to the inlet of the spraying arm into which the washing water flows into the spraying arm. Is provided.

The variable injection means has a nozzle hole formed on the upper surface of the injection arm to communicate with the injection flow path 6a, penetrated through the lower part in a hemispherical shape to form a through part, one side of the through part forms a weight part, and a channel part communicating with the through part on the other side. It is formed and the nozzle is formed in communication with the penetrating portion to the upper side, the actuator is formed in the side of the nozzle port is inserted into the inside of the nozzle port is inserted into the nozzle to the upper side and the channel portion is characterized in that the hinge is combined to match the injection flow path A washing water spray device for a washer is provided.

In addition, the nozzles formed on the actuator is provided with a washing water spraying device of the dishwasher, characterized in that the two are formed at a predetermined angle symmetrical with the hemispherical center line.

Hereinafter, the dishwasher washing water sprayer of the present invention will be described according to the embodiment shown in the accompanying drawings.

As shown in FIG. 4, the dishwasher washing water spraying apparatus of the present invention is installed in the washing water flow path F, through which the washing water pressurized by the pump 9 'flows to the injection arm 6, thereby increasing the flow rate of the washing water. It is installed on one side of the injection arm (6) and the injection arm (6) which is connected to the washing water flow path (F) to adjust periodically and rotatably coupled to spray the washing water; It is configured to include a variable injection means (N) for injecting the washing water while changing the injection angle according to the flow rate adjusted by the flow rate control means (R).

In general, the pump 9 'is preferably a centrifugal pump used in a dishwasher.

The washing water flow path (F) is the upper, lower flow paths (10, 11) connecting the centrifugal pump (9 ') and the upper and lower injection arms (5, 6) and the upper flow path formed with a spray water flowing therein, Including the lower injection arms (5, 6), and in the following description, by installing the flow rate adjusting means (R) in the washing water flow path (F) formed by the lower flow path pipe 11 and the lower injection arm (6) The case where it applies is demonstrated.

As shown in FIG. 5, the flow rate adjusting means R is formed such that the opening 12a and the blocking film 12b through which the washing water flows are formed inside the disc shape alternately at regular angles at intervals. The fixed control plate 12 installed in the F) and one opening blocking film 13a is formed to correspond to the fixed control plate 12 so as to block one of the openings 12a on one side thereof, and other portions thereof. The rotating plate 13 is formed by the through hole 13b and coupled to the inlet of the injection arm 6 through which the washing water flows into the injection arm 6.

The fixed control plate 12 is coupled to the end of the lower flow path pipe 11 is connected to the lower injection arm 6 in the washing water flow path (F), the coupling structure is coupled to the inside of the lower flow pipe (11) It is preferable to form a male thread 6h on the outer diameter of the diffuser 11b and to form a female thread 12c on one side of the fixed control plate 12 to be bonded to each other. The rotating plate 13 is coupled to the inlet portion 6d through which the washing water flows into the lower injection arm 6, and the coupling structure separates the arm holder 6e through which the inside is penetrated from the arm portion 6b. A female thread 6j is formed inside the holder 6e, and a male thread 13c is formed at the outer diameter of the rotating plate 13 to couple the rotating plate 13 to the inside of the arm holder 6e, and then the arm holder 6e is attached. Engages in the arm portion 6b. The fixed adjusting plate 12 and the rotating plate 13 correspond to each other when the lower injection arm 6 is rotatably coupled to the lower flow path 11 by the arm holder 6e.

The opening 12a and the blocking film 12b formed in the fixed control plate 12 are alternately formed at predetermined intervals, but preferably at 90 ° intervals.

When the fixed control plate 12 is coupled to the washing water flow path (F), the opening 12a is coupled to match each corner of the tub 2 where dishwashing is performed.

The injection arm 6 has an inlet 6d through which washing water flows in the lower portion as in the conventional structure, and an injection nozzle 6c and a rotational force generating nozzle 6f are formed on the upper surface thereof. 6d) is formed such that the variable injection means is provided at one end of the structure in which the arm holder 6e or the like which is rotatably coupled is formed. The structure is a structure without the conventional inclined nozzle (6g).

As shown in FIG. 6, the variable injection end R has a nozzle hole 6k formed on the upper surface of the injection arm 6 so as to communicate with the injection passage 6a, and penetrated through the lower part in a hemispherical shape. 14a is formed and one side of the penetrating portion 14a forms a weight portion 14b, and a channel portion 14c communicating with the penetrating portion 14b is formed on the other side thereof and communicates with the penetrating portion 14a upward. An actuator 14 having a nozzle 14d formed thereon and a locking jaw 14e formed at its side is inserted into the nozzle opening 14k so that the nozzle 14d is directed upward and the channel portion 14c is injected into the injection passage 6a. It is made by combining the hinge (15) to match.

In addition, the nozzles 14d formed on the actuator 14 are preferably formed in two at a predetermined angle symmetrically with a hemispherical center line, and the hinge-coupled part is located at the upper side on the hemispherical center line and hinged 15. The portion is moved to the left and right at a predetermined angle by the load of the waiter portion 14b as the axis, and the range of movement by the locking jaw 14e is limited.

Hereinafter will be described the effect of the dishwasher washing water spraying device of the present invention.

The dishwasher washing water spraying device of the present invention is the washing water pressurized by the centrifugal pump (9) through the lower flow passage (11) through the fixed control plate (12) of the flow rate control means (R) and the rotating plate (13) It is introduced into (6) and is injected through the nozzle unit and the variable injection means (N). At this time, the spray arm 6 is rotated by the rotational force generating nozzle 6f to spray the washing water to wash the dishes.

In this process, the washing water flows through the four openings 12a formed in the fixed control plate 12, and the washing water flowing through the openings 12a is coupled to the injection arm 6 and rotates with the injection arm 6. The opening blocking film 13a in (13) alternates with the four openings 12a and flows into the injection arm 6 while the quantity changes periodically.

And the variable injection means (N) is a nozzle formed on the upper side through the through portion (14a) when the washing water flows into the channel portion (14c) of the actuator 14 through the injection passage (6a) of the injection arm ( 14d), and when a large amount of washing water flows in through the channel portion 14c, as shown in FIG. 7 (a), the washing water pressurizes the waiter portion 14b and opens the nozzle 14d. Since the water is sprayed through, the washing water is injected in a state close to the vertical, and when a small amount of the washing water is introduced through the channel portion 14c, as shown in FIG. 7B, by the load of the waiter portion 14b. The washing water is sprayed through the nozzle 14d in a state where the nozzle 14d is inclined at a predetermined angle with the hinge 15 as an axis.

In addition, as another embodiment of the present invention, as shown in Figure 9, instead of the waiter portion 14b constituting the actuator 14 to remove the load of the waiter portion 14b and a spring on one side coupled to the hinge 15 Walk (16) to combine.

The small amount of the washing water controlled and controlled by the flow rate adjusting means R means a relatively small amount.

As shown in FIG. 8, the trajectory of the washing water sprayed through the variable spray means N has a large amount of washing water in the state where the opening blocking film 13a does not block the opening 12a, and thus the nozzle 14d When the injection barrier membrane 13a rotates to block the opening 12a, the amount of washing water is reduced and the nozzle 14d is sprayed at an inclined angle so that the injection area The enlarged and the washing water reaches the edge (S). Such an operation is provided with four openings 12a formed at intervals of 90 °, so that the opening blocking film 13a can affect the corners of the tub 2 in one rotation.

As described above, the present invention can remove the dead zone (D), which is a corner portion of the tub 2 in which the dishes are mounted and the dish washing is not reached, and the washing water is sprayed on the inner surface of the tub 2. It is possible to minimize the washing water is sprayed on the inner surface of the tub (2) has the effect of preventing the impact noise generated by increasing the washing ability to improve the reliability of the product.

Claims (5)

A flow rate adjusting means for periodically adjusting the flow rate of the washing water, the washing water pressurized by the pump flowing in the injection arm, and a spray arm connected to the washing water flow path and rotatably coupled to spray the washing water; Washing water spraying device of the dishwasher, characterized in that it is installed on one side of the injection arm comprises a variable spray means for spraying the washing water while changing the spray angle in accordance with the flow rate adjusted by the flow control means. According to claim 1, wherein the flow rate adjusting means is formed in the disc and the opening and the blocking membrane to the washing water flows alternately at regular intervals are formed in the fixed control plate installed in the washing water flow path and the fixed control plate corresponding to One opening blocking film is formed on one side to block the opening and formed as a through hole through the other portion is formed of a rotating plate coupled to the inlet of the injection arm for the wash water flows into the injection arm Washing water jet device in dishwasher. According to claim 2, wherein the opening formed in the fixed control plate and the blocking film is washing water spraying device of the dishwasher, characterized in that formed alternately at intervals of 90 °. The variable injection means of claim 1, wherein the variable injection means has a nozzle hole formed on the upper surface of the injection arm so as to communicate with the injection flow passage, penetrated through the lower part in a hemispherical shape to form a through part, and one side of the through part forms a weight part and communicates with the through part on the other side. A channel portion is formed and a nozzle is formed to communicate with the through portion upward, and an actuator having a latching jaw formed at the side is inserted into the nozzle hole so that the nozzle is directed upward and the channel portion is hinged to coincide with the injection flow path. Water jetting device for dishwashers. The washing water spraying device of claim 4, wherein two nozzles formed on the actuator are formed at a predetermined angle symmetrically with a hemispherical center line.