KR20050015756A - Dishwasher - Google Patents

Abstract

PURPOSE: A dishwasher is provided to enhance a washing effect and to shorten the time for washing, by washing tableware with water supplied to a body from an outer source of water in a water supply process. CONSTITUTION: A dishwasher comprises a cavity in which tableware is placed; plural injection nozzles(13) arranged to the cavity; plural injection ducts(11) connected to the injection nozzles to supply water to each injection nozzle; and a water supply duct(16) connected to an inlet part(21,22) of one of the injection nozzles together with one of the injection ducts, to supply water to the cavity through the injection nozzles. The water supply duct and the injection duct are connected to the injection nozzle by a connection device(20) combined to the inlet part of the injection nozzle.

Description

Dishwasher {Dishwasher}

The present invention relates to a dishwasher, and more particularly, to a dishwasher capable of increasing the washing effect and shortening the washing time by configuring the dishwasher to be cleaned using water supplied to the main body from an external water supply during a watering process. It is about.

In general, the dishwasher is formed in a box shape with an open front, and includes a main body provided with a cavity for washing dishes therein, and a door for opening and closing the opened front of the main body to automatically wash dishes placed in the cavity. Device.

Typically, an upper dish basket and a lower dish basket are respectively installed in the upper and lower portions of the cavity to allow the dishes to be stably placed and to be washed by the sprayed water. Washing water circulation pump for circulating the washing water, and drainage pump for discharging the washing water are installed.

In addition, a plurality of injection nozzles are disposed in the cavity to receive the water through the injection ducts connected to the washing water circulation pump and to spray the upper and lower dish baskets so that the dishes are washed, and a drain pipe is connected to the outlet of the drain pump. After the wash is completed, the wash water can be discharged to the outside.

Therefore, when the washing water circulation pump is operated after water is supplied from an external water source, water collected in the sump is supplied to the spray nozzles through the spraying ducts, and then water is sprayed in various directions through the spray nozzles. The dishes placed in the lower dish basket are washed, and when the washing is completed and the drain pump is operated, the washing water is discharged to the outside.

However, the conventional dishwasher configured as described above is a washing effect is performed only by the water circulated internally by the wash water circulation pump, so that the washing effect is reduced and the washing time is increased to increase the consumer's preference. This will be.

The present invention is to solve the above-mentioned problems of the prior art, an object of the present invention is to increase the cleaning effect and cleaning time by configuring to wash dishes using water supplied from the external water source to the main body in the water supply process It is to provide a dishwasher that can be shortened.

Dishwasher according to the present invention for achieving this object,

A plurality of spraying ducts for supplying water to the spraying nozzles connected to the plurality of spraying nozzles, a plurality of spraying nozzles disposed in the cavity, the plurality of spraying nozzles, and the plurality of spraying ducts It is characterized in that it is provided with a water supply duct connected to any one of the inlet portion of the plurality of injection nozzles to supply water to the cavity through the injection nozzle.

Preferably, the water supply duct and the injection duct is connected to the injection nozzle by a coupling device coupled to the inlet of the injection nozzle.

The connecting device is formed by communicating with a first inlet portion disposed toward the upper portion, an outlet portion disposed laterally, and a second inlet portion disposed downwardly and in line with the first inlet portion.

The water supply duct and the injection duct are respectively connected to the first inlet part and the second inlet part, and the injection nozzle is connected to the outlet part, so that the water supply duct or the second inlet part is connected to the first inlet part and the second inlet part. The water supplied from the injection duct is to be delivered to the injection nozzle through the outlet.

In addition, the connecting device further includes a check valve disposed at the second inlet so that water passing through the first inlet does not flow back to the second inlet.

The check valve has an edge portion in close contact with an inner circumferential surface of the second inlet portion, and a vane portion disposed inside the edge portion so as to be rotatable about an upper end of the edge portion.

In addition, the upper end of the rim portion is provided with a fitting protrusion protruding upwards, the upper end of the second inlet portion is provided with a fitting groove for receiving the fitting projection, the fitting projection is fitted into the fitting groove in the second state The check valve is fixed to the second inlet by inserting the injection duct into the inlet.

In addition, the edge of the edge portion and the vane portion is disposed in contact with the edge of the injection duct in the state that the injection duct is fitted to the second inlet, so that the vane is not rotated toward the injection duct, Water flowing through the first inlet is not discharged toward the injection duct through the second inlet.

In addition, the check valve is made of a flexible material so that the edge portion can be in close contact with the second inlet, and at the same time, the vane portion is centered on the upper end of the edge portion by water passing through the injection duct; It is possible to rotate in the direction of opening the inlet.

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

Figure 1 is a perspective view showing the outline of the dishwasher according to the present invention in the open door state, Figure 2 is a cross-sectional view showing a rough internal structure of the dishwasher according to the present invention in the closed door.

As shown in the drawing, the dishwasher according to the present invention is formed in a box shape having an open front, and includes a main body 1 having a cavity 2 for washing dishes by putting the inside thereof, and opening of the main body 1. It is provided with a door 3 for opening and closing the front surface to form an appearance.

Upper and lower baskets 4 and 5, respectively, are disposed on the upper and lower portions of the cavity 2 so as to be movable in the front and rear directions, and the water collecting tank 6 and the washing water circulation pump are disposed below the cavity 2. (7) and a drain pump (8) are arranged.

The suction ports of the washing water circulation pump 7 and the drain pump 8 are connected to the sump 6, and their discharge ports are connected to the first and second injection ducts 10, 11 and the drain pipe 9, respectively. In addition, the washing water collected in the sump 6 is discharged to the first and second injection ducts 10 and 11 and the drain pipe 9, respectively.

In addition, an upper injection nozzle 13, an intermediate injection nozzle 14, and a lower injection nozzle 15 are disposed at the upper, middle, and lower portions of the cavity 2, respectively, so that the upper and lower table baskets 4 and 5 are disposed. Let the water spray toward the dishes placed on the table.

The upper and middle injection nozzles 13 and 14 are connected to the second injection duct 11 and the third injection duct 12 branched from the second injection duct 11, respectively, and the lower injection nozzle 15 ) Is connected to the first injection duct 10 to receive the water discharged from the washing water circulation pump (7).

In addition, a water supply duct 16 is provided inside the main body 1 to supply water for washing dishes from the external water supply source to the inside of the main body 1. The water supply duct 16 extends from the lower part of the main body 1 to the upper part so that its end is connected with the upper injection nozzle 13 together with the second injection duct 11 through the upper injection nozzle 13. The water supply is made to a certain height at the bottom of the cavity (1).

However, the water supply duct 16 may perform the function sought in the present invention even if it is connected not only to the upper injection nozzle 13 but also to the intermediate injection nozzle 14 or the lower injection nozzle 15.

Next, a structure of a connection device connecting the second injection duct and the water supply duct to the upper injection nozzle will be described with reference to FIGS. 3 to 5.

3 is an enlarged perspective view of the portion “A” of FIG. 2, in which the water supply duct and the second injection duct are connected to the upper injection nozzle by a connecting device according to the present invention, and FIGS. 4 and 5 are views of FIG. 2. 4 is an enlarged cross-sectional view of the portion “A”, in which FIG. 4 shows that the water supplied along the water supply duct through the connecting device according to the present invention is delivered to the upper injection nozzle, and FIG. 5 shows the second through the connecting device according to the present invention. Water flowing through the injection duct is shown to be delivered to the upper injection nozzle.

As shown therein, the connecting device 20 according to the present invention includes a first inlet 21 connected to the water supply duct 16, a second inlet 22 connected to the second injection duct 11, And the outlet part 23 is connected to the upper injection nozzle 13 is provided to form an approximately T-shaped appearance.

The first inlet portion 21 and the outlet portion 23 are formed to be aligned with each other to be arranged in the vertical direction on the upper wall (2a) of the cavity 2, the second inlet portion 22 is the first inlet It is formed perpendicularly between the portion 21 and the outlet portion 23 so as to be disposed laterally at the upper wall 2a of the cavity 2.

A thread is formed on the outer circumferential surface of the first inlet 21, so that the outer circumferential surface of the first inlet 21 is screwed to the upper wall 2a of the cavity 2 so that the connecting device 20 is connected to the cavity 2. It can be fixed to the upper wall (2a).

The upper end portions of the water supply duct 16, the second injection duct 11, and the upper injection nozzle 13 are forcibly fitted into the first and second inlet parts 21 and 22 and the outlet part 23, respectively. It is inserted into and fixed. However, the water supply duct 16, the second injection duct 11, and the upper injection nozzle 13 are different from each other, for example, by screwing or bonding. Of course, it can be fixed to the 22 and the outlet (23).

In addition, the connecting device 20 according to the present invention includes a check valve 30 installed at the end of the second inlet 22 to prevent the back flow of water.

The check valve 30 has an edge portion 31 in close contact with the inner circumferential surface of the second inlet portion 22, and a vane portion 32 disposed inside the edge portion 31 so as to have a second inlet portion ( 22). The vane 32 has a central portion at its upper end fixed to the upper end of the rim 31 so that it can be rotated in the direction of water flow around the upper end of the rim 31.

In addition, a fitting protrusion 33 extending upward at a predetermined length is integrally formed at the upper center portion of the edge portion 31, and the fitting protrusion 33 is disposed at the upper center portion of the end of the second inlet portion 22. When the fitting groove 24 corresponding to the fitting projection 33 is fitted into the fitting groove 24, the second injection duct 11 is inserted into the second inlet portion 22 when the check valve 30 is to be fixed to the second inlet portion (22).

When the check valve 30 is fixed to the second inlet portion 22 as described above, the edge portion 31 and the vane portion 32 are disposed perpendicular to the second inlet portion 22 so that the second inlet portion At the same time, the edges of the edge portion 31 and the vane portion 32 are caught by the edges of the second injection duct 11, and thus, as shown in FIGS. 4 and 5. The vane 32 is not rotated to the second injection duct 11 side, but is rotated only to the second inlet 22, the water flowing through the first inlet 21, the second inlet 22 ) Will not flow back to the second injection duct (11) side.

The check valve 30 configured as described above is made of an elastic and flexible material such as rubber so that the rim 31 and the fitting protrusion 33 seal the inner circumferential surface of the second inlet 22, and at the same time, the vane It is possible to open and close the second inlet portion 22 by allowing the portion 32 to flexibly rotate in the flow direction of water and then return to the original position.

Referring to the operation of the dishwasher equipped with a connection device according to the invention configured as described above are as follows.

First, when the dishes to be cleaned are placed in the upper and lower dish baskets 4 and 5 and the water supply valve (not shown) installed in the water supply duct 16 is opened while the door 3 is closed, the water supply duct 16 Through the water is supplied from an external water supply.

The water supplied along the water supply duct 16 is introduced into the connecting device 20 through the first inlet 21, passes through the outlet 23, and is subsequently delivered to the upper injection nozzle 13. Accordingly, water is sprayed from the upper injection nozzle 13 toward the upper dish basket 4, and the priming washing is performed in the upper dish basket 4. In addition, as the water passing through the upper dish basket 4 continues to fall into the lower dish basket 5, the priming washing is also performed in the lower dish basket 5.

At this time, the water flowing into the first inlet 21 may also be delivered to the second inlet 22 in structure, as shown in FIG. 4, the check valve 30 installed in the second inlet 22. Since the vane 32 of is not rotated by the second injection duct 11, the vane 32 of the vane 32 does not flow backward toward the second injection duct 11.

When a certain amount of water is filled in the lower part of the cavity 2 and the sump 6 and the water supply operation is completed, the washing water circulation pump 7 is operated to wash the water into the first and second injection ducts 10 and 11. To be discharged.

The washing water discharged to the first injection duct 10 is sprayed upward and downward through the lower injection nozzle 15 to wash the dishes placed in the lower dish basket 5 and to fall to the lower portion of the cavity 2. Let food waste collect in the sump (6).

On the other hand, a part of the washing water discharged to the second injection duct 11 is sent to the third injection duct 12 to be sprayed upward and downward of the cavity 2 through the intermediate injection nozzle 14, the upper and lower The dishes placed in the dish baskets 4 and 5 are washed.

Subsequently, the washing water discharged to the second injection duct 11 is sent to the second inlet portion 22 of the connecting device 20, as shown in FIG. 5, to remove the vane 32 of the check valve 30. It is pushed to open, so that the wash water is supplied to the upper injection nozzle 13 through the outlet 23 of the connecting device (30).

The washing water passing through the upper spray nozzle 13 is sprayed toward the lower portion of the cavity 2 to wash the dishes placed in the upper dish basket 4 so that dish washing is performed.

When the dish washing is completed through the above operation, the drain pump 8 is operated so that the wash water collected in the lower part of the cavity 2 and the sump 6 is discharged to the outside of the main body 1 through the drain pipe 9. It is discharged and the drainage work is completed.

As described in detail above, the dishwasher according to the present invention is configured to wash dishes using water supplied from an external water source in a water supply process by a simple structure, thereby increasing the washing effect and washing time. It is possible to shorten, thereby improving the washing performance is to increase the consumer's preference.

1 is a perspective view showing a rough appearance of the dishwasher according to the present invention with the door open.

Figure 2 is a cross-sectional view showing the internal structure of the dishwasher according to the present invention with the door closed.

3 is an enlarged perspective view of the portion “A” of FIG. 2, showing that the water supply duct and the injection duct are connected to the injection nozzle by the connecting device according to the present invention.

Figure 4 is an enlarged cross-sectional view of the portion "A" of Figure 2, showing that the water supplied along the water supply duct through the connecting device according to the invention is delivered to the injection nozzle.

FIG. 5 is an enlarged cross-sectional view of the portion “A” of FIG. 2, showing that water flowing through the injection duct through the connection device according to the present invention is transferred to the injection nozzle.

* Description of symbols on the main parts of the drawings

4,5: Dish basket 7: washing water circulation pump

10,11,12: Injection duct 13,14,15: Injection nozzle

20: connecting device 21: first inlet

22: second inlet 23: outlet

30: check valve 31: rim

32: Vane

Claims (9)

A plurality of spraying ducts for supplying water to the spraying nozzles connected to the plurality of spraying nozzles, a plurality of spraying nozzles disposed in the cavity, the plurality of spraying nozzles, and the plurality of spraying ducts And a water supply duct connected to an inlet of one of the plurality of spray nozzles to supply water to the cavity through the spray nozzles. The dishwasher of claim 1, wherein the water supply duct and the jetting duct are connected to the jetting nozzle by a connecting device coupled to an inlet of the jetting nozzle. 3. The connecting device according to claim 2, wherein the connecting device communicates with the first inlet arranged upward, the outlet arranged laterally, and the second inlet arranged downward and in alignment with the first inlet. Dishwasher, characterized in that formed. According to claim 3, wherein the water supply duct and the injection duct is connected to the first inlet and the second inlet, respectively, the injection nozzle is connected to the outlet, the first inlet or the second inlet And the water supplied from the water supply duct or the spraying duct through the outlet to the spray nozzle. The dishwasher of claim 4, wherein the connection device further comprises a check valve disposed at the second inlet part such that water passing through the first inlet part does not flow back to the second inlet part. 6. The tableware of claim 5, wherein the check valve includes an edge portion in close contact with an inner circumferential surface of the second inlet portion, and a vane portion disposed inside the edge portion so as to be rotatable about an upper end of the edge portion. syringe. According to claim 6, wherein the upper end of the fitting projection is projected upwardly is provided, the upper end of the second inlet is provided with a fitting groove for receiving the fitting projection, the fitting projection is fitted into the fitting groove The check valve is fixed to the second inlet by the injection duct is inserted into the second inlet in the dishwasher. The method of claim 7, wherein the edge of the edge portion and the vane portion is in contact with the edge of the injection duct while the injection duct is fitted to the second inlet portion, the vane is not rotated toward the injection duct And the water flowing through the first inlet is not discharged toward the jet duct through the second inlet. The method of claim 7, wherein the check valve is made of a flexible material so that the edge portion can be in close contact with the second inlet portion, the vane portion is centered on the upper end of the edge portion by water passing through the injection duct By rotating in the direction of opening the second inlet.