KR101241458B1 - Nozzle assembly of dish washer - Google Patents

Abstract

The present invention relates to a dishwasher, and improves the coupling structure of the water nozzle and the nozzle holder of the dishwasher, so that the flow path of the washing water is formed in the forward direction to prevent the loss of water pressure.

The nozzle holder coupling structure of the dishwasher according to the present invention includes a holder body having a washing water flow path formed therein, and a holder connector extending at one end of the holder body and having at least one washing water inlet and a pin insertion hole formed therein. holder; A spray nozzle rotatably coupled to the other end of the nozzle holder; And a water guide in which the holder connector is in close contact with the front surface and has a water discharge port communicating with any one of the water inlets and at least one guide pin fitted into the pin insertion hole, wherein the water inlet includes a first wash water. And a second washing water inlet formed at a position spaced downward from the first washing water inlet by a predetermined interval, and when the first washing water inlet communicates with the washing water discharge port, the washing water rises along the water guide. The flow direction is characterized in that it is moved to the injection nozzle without being reversed.

As proposed, since the inflow passage of the washing water flowing through the water guide is formed in the forward direction, there is an effect of preventing the loss of hydraulic pressure.

Water guide, wash water inlet, nozzle holder

Description

Nozzle assembly of dish washer

1 is an exploded perspective view showing a water guide and a nozzle holder of a conventional dishwasher.

Figure 2 is an external perspective view of a dishwasher having a water guide and a nozzle holder according to the spirit of the present invention.

Figure 3 is a perspective view showing a washing water spraying device having a nozzle holder coupling structure according to the spirit of the present invention.

Figure 4 is a rear view showing the back of the nozzle holder according to the spirit of the present invention.

5 is a perspective view showing a state in which the water guide and the nozzle holder in the upper rack is moved in the upward direction according to the spirit of the present invention.

Figure 6 is a perspective view showing a state in which the water guide and the nozzle holder in the upper rack is moved in a downward direction according to the spirit of the present invention.

7 is a perspective view showing a state in which the nozzle holder and the water guide are coupled according to another embodiment of the present invention.

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

100: dishwasher 120: tub

140: water guide 141: washing water outlet

142: guide pin 200: upper nozzle

210: holder body 211: back

212: pin insertion hole 213: washing water inlet

214: packing member 215: extension part

220: holder connector

The present invention relates to a dishwasher, and improves the coupling structure of the water guide and the upper nozzle holder of the dishwasher so that the flow path of the washing water is not bent, is formed in the forward direction, the nozzle fastening so that the washing water flows into the upper nozzle A dishwasher provided with a structure.

In general, the dishwasher includes a dish rack for storing dishes in a tub, a spray nozzle for spraying the washing water onto the dishes stored in the dish rack, a sump, a washing pump, and a washing motor for supplying the washing water to the spray nozzle. .

In detail, the general dish washer having the above configuration is configured such that the washing pump is driven to spray the washing water stored in the sump into the spray nozzle. Then, the washing water sprayed from the spray nozzle is ejected at a high pressure to hit the surface of the tableware stored in the food rack. Therefore, the dirt on the surface of the tableware is separated by the water pressure of the washing water that strikes the surface of the tableware.

In addition, the dish washing process includes a washing process to wash away the dirt from the dishes, a rinsing process to rinse the dishes after the washing process is finished, and a drying process to remove moisture from the surface of the dish after the rinsing is finished. Is done.

1 is an external perspective view showing a nozzle holder and a water guide of a conventional dishwasher.

Referring to FIG. 1, a conventional nozzle holder and a water guide may include a water guide 4 into which washing water is introduced, a washing water outlet pipe 5 and a guide pin 6 formed in the water guide, and a water guide. The nozzle holder 1 is included.

In detail, the nozzle holder 1 has two washing water inlet pipes 2 through which the washing water flowing from the washing water outlet pipe is moved, and a pin insertion hole 3 into which the guide pin 6 is inserted. It is formed on the top. That is, the guide pin is attached while being inserted into the pin insertion hole. Thus, the coupling between the water guide 4 and the nozzle holder 1 is completed. Here, the upper nozzle is fixed to the lower portion of the upper rack, it is mounted so as to move up / down of the upper rack according to the size of the dishes accommodated in the upper rack.

However, when the upper nozzle is separated from the water guide and then remounted, when the upper nozzle moves upward with the upper rack, there is almost no loss of the flow path of the washing water, but when the upper nozzle moves downward ( That is, in the case where the washing water inlet pipe formed in the upper part of the two washing water inlet pipes is combined with the washing water outlet pipe, the direction of the flow path flowing through the washing water outlet pipe 5 of the water guide 4 is upward. Pass through the wash water inlet pipe. In addition, since the flow path is u-turned downward again, there is a problem that the hydraulic loss of the washing water is large.

In addition, there is a problem that the wash water leaks due to the loss of the hydraulic pressure of the wash water. In addition, the washing water inlet tube formed at the bottom of the two washing water inlet tubes may be in a state in which it is not coupled with any of the washing water outlet tubes or the guide pins formed in the water guide. In this case, there is a problem that the wash water leaks, as well as the noise caused by the vibration of the motor during the cleaning.

The present invention has been proposed to solve the above problems, and in the process of the upper nozzle is separated from the water guide and then remounted, the nozzle holder and the washing water outlet formed at the end of the upper nozzle and coupled with the water guide It is formed so that the position lies in the forward direction. In addition, an object of the present invention is to provide a dishwasher having a nozzle holder fastening structure for removing hydraulic loss of washing water introduced through the water guide to improve washing efficiency.

In addition, by forming the washing water inlet pipe or the pin insertion hole formed in the nozzle holder and all the guide pin or the washing water inlet pipe formed in the water guide, by forming an extension extending in a predetermined length in the lower direction of the nozzle holder, An object of the present invention is to provide a dishwasher having a nozzle holder fastening structure in which a lower rack is in close contact so that the nozzle holder does not swing and the nozzle holder is more firmly fixed to the water guide.

Nozzle holder coupling structure of the dishwasher according to the present invention for achieving the object as described above, the holder body is formed with a washing water flow path therein, at least one washing water inlet and pin insertion port extending to one end of the holder body A nozzle holder including a holder connector formed thereon; A spray nozzle rotatably coupled to the other end of the nozzle holder; And a water guide in which the holder connector is in close contact with the front surface and has a water discharge port communicating with any one of the water inlets and at least one guide pin fitted into the pin insertion hole, wherein the water inlet includes a first wash water. And a second washing water inlet formed at a position spaced downward from the first washing water inlet by a predetermined interval, and when the first washing water inlet communicates with the washing water discharge port, the washing water rises along the water guide. The flow direction is characterized in that it is moved to the injection nozzle without being reversed.

By the above configuration, since the flow path of the washing water flowing from the water guide to the nozzle holder is formed in the forward direction, the hydraulic loss of the washing water can be prevented.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the embodiments presented, and other embodiments included within the scope of other inventive inventions or the scope of the present invention by easily adding, changing, or deleting other components are easily provided. I can suggest.

In addition, the washing water inlet of the detailed description of the present invention may be named as the first washing water inlet and the second washing water inlet, depending on the position formed.

Figure 2 is a perspective view showing the appearance of the dishwasher with a nozzle holder coupling structure according to the spirit of the present invention.

Referring to FIG. 2, the dishwasher 100 according to the present invention includes a tub 120 having a washing tank formed therein, a door 130 that opens and closes one surface of the tub, and an upper rack introduced into the tub. 150 and the lower rack 160, the lower nozzle 180 mounted inside the tub, spraying the washing water toward the lower rack 160, and the upper nozzle 200 for spraying the washing water to the upper rack ) And a holder body 210 connected to an end of the upper nozzle, and a holder connector 220 connected to the holder body and having a washing water inlet formed therein.

Hereinafter will be described the operation of the dishwasher 100 according to the present invention.

First, the user opens the door 130 of the dishwasher 100 and pulls the upper rack 150 and / or the lower rack 160 to the outside of the washing tank. In addition, dishes are stored in the racks 150 and 160. Then, the door 130 is closed and power is applied to the dishwasher.

On the other hand, when power is applied to the dishwasher 100 and the washing step is performed, the washing water flowing from the water source is introduced into the sump 170. Then, after a certain amount of washing water is introduced into the sump, a washing pump (not shown) equipped with a washing motor is operated.

In detail, the washing motor is driven to rotate the impeller (not shown) installed in the washing pump to suck the washing water, and the sucked washing water is pumped to the water guide 140 or the lower nozzle 180. Here, the nozzle holder branched from the water guide is a nozzle holder formed with the washing water inlet and the pin insertion hole according to the present invention is integrally combined with the upper nozzle (200).

In addition, the heater in the heating unit (not shown) connected to the drive with the driving of the washing pump is operated, the washing water is heated. The heated wash water is pumped simultaneously or selectively to the lower nozzle 180 and the water guide 140.

Meanwhile, the wash water pumped by the water guide 140 is finally moved to the top nozzle (not shown) and the upper nozzle 200 and sprayed into the washing tank. Then, the dishes stored in the racks 150 and 160 are washed by the sprayed washing water.

Here, the top nozzle (not shown) sprays the washing water vertically downward, and the upper nozzle 200 sprays the washing water vertically upward, thereby washing the dishes stored in the upper rack 150. In addition, the lower nozzle 180 sprays the washing water vertically upward, thereby washing the dishes stored in the lower rack 150.

In addition, the foreign matter generated in the cleaning process is filtered by a filter provided in the sump 170, it is broken finely by a disposer mounted in the sump 170. Then, when the washing process is completed, the contaminated washing water is discharged to the outside of the dishwasher 100 through a drain pump (not shown) together with the foreign matter.

In addition, when the washing water is discharged to the outside, clean washing water is introduced into the sump 170 again through the washing water inlet, and is sprayed through the spray nozzles 200 and 180 in the same manner as the washing step. Then, the rinsing step is performed using the clean washing water sprayed. Then, after the rinsing step is completed, the drying step is completed, and the entire process of washing is completed.

3 is a perspective view showing a washing water spraying device having a nozzle holder coupling structure according to the spirit of the present invention.

Referring to FIG. 3, the dishwasher having the nozzle holder coupling structure according to the present invention includes a sump 170 having a washing water stored therein and a washing pump for pumping the washing water therein, and connected to a center of the sump to wash water. A water nozzle 140 connected to one edge of the sump 170 and formed along the inner circumferential surface of the tub so as to be injected, and a passage for moving the washing water pumped by the washing pump; And, coupled to one side of the water guide 140, the holder body 210 and the holder connector 220, which is part of the wash water is coupled to the end of the holder body 210 and the holder connector 220, the wash water An upper nozzle 200 to be sprayed and a top nozzle (not shown) connected to an upper end of the water guide 140 to spray the washing water are included. Here, the holder body 210 and the holder connector 220 is coupled to the bottom of the dish rack accommodated in the tub. In addition, a guide pin 142 or a washing water inlet (not shown) is formed at a predetermined portion of the water guide 140, and is coupled to the pin insertion hole 212. Thus, the water guide and the nozzle holder are tightly coupled without flowing.

By the above configuration, a part of the washing water pumped from the washing pump mounted in the sump moves to the lower nozzle 180 and is injected into the tub. And, the remaining part is moved to the water guide 140, a part of the washing water moving to the water guide 140 is moved to the upper nozzle 200 through the nozzle holder, the other part is the top nozzle ( (Not shown). Then, the washing water moved to the upper nozzle 200 and the top nozzle (not shown) is injected into the tub through the injection hole 181 formed on one surface of the nozzle.

Figure 4 is a rear view showing the back of the nozzle holder according to the spirit of the present invention.

Referring to FIG. 4, the nozzle holder coupling structure according to the present invention includes a holder body 210 connected to an injection nozzle, a holder connector 220 connected to the holder body 220, and a holder connector 220. The pin insertion hole 212, the washing water inlet 213, and the packing member 214 are formed.

In detail, the holder body 210 forms a flow path of the washing water horizontally in an approximately "-" shape. In addition, at least one washing water inlet 213 is formed at the holder connector 220 connected to the holder body to become a movement passage of the washing water. Then, at least one pin insertion hole 212 is formed at each of the upper and lower portions of the washing water inlet 213.

In addition, an extension part 215 may be formed on the rear surface 221 of the holder connector 220 by extending a predetermined length at a lower end of the pin insertion hole 212.

Here, the extension portion 215 is a portion where the lower rack is in close contact, the pin insertion hole is a portion to be inserted into the guide pin to be described later, the extension will be described with reference to the drawings below.

5 and 6 are an external perspective view showing a combined state of the nozzle holder and the water guide according to the position of the upper rack according to the preferred embodiment of the present invention.

5 and 6, the nozzle holder and the water guide coupling structure of the dishwasher according to the present invention is a holder body 210, a washing water inlet 213 and the pin insertion hole 212 is coupled to the spray nozzle A connector 220, a packing member 214 inserted into the washing water inlet and sealing the water guide, a water guide 140 coupled to the nozzle holder, a guide pin 142 formed on the water guide, and a washing water outlet 141. ) Is included.

In detail, the holder body 210 of the dishwasher according to the present invention is fastened to the upper nozzle (200). And, the upper nozzle 200 is fastened to the lower end of the upper rack, and is drawn at the same time as the upper rack. Here, the upper rack is configured to ascend and descend in the up / down direction according to the type of dishware to be stored. Therefore, the upper nozzle 200 and the holder body 210 are integrally moved with the upper rack as the upper rack moves up and down. That is, the washing water inlet 213 and the pin insertion hole 212 formed in the holder connector 220 of the holder body 210 are separated from the water guide 140 and then attached again.

On the other hand, the water guide 140 is a moving passage through which the washing water flows, and the washing water outlet 141 is formed at a predetermined portion. In addition, the washing water outlet 141 communicates with the washing water inlet 213 to move the washing water. In addition, at least one guide pin 142 is formed at an upper portion and a lower portion of the washing water outlet 141. In addition, the guide pin 142 is coupled to the pin insertion hole 212 described above so that the nozzle holder does not swing.

In more detail, when the user lifts the upper rack upward and pulls it in, the pin insertion hole 212 formed at the top of the holder connector of the nozzle holder is connected to the guide pin 142 located at the top of the water guide. While being combined, the washing water inlet 213 formed in the nozzle holder is coupled to the guide pins 142 and the like, which are sequentially formed in the water guide, to complete the assembly. That is, as shown in the figure, the guide pin 212 and the washing water inlet 214 formed in the holder connector 220 is coupled to both the guide pin 142 and the washing water outlet 141 formed in the water guide.

Thus, the nozzle holder is more firmly fixed to the water guide.

On the other hand, when the user pulls down the upper rack in the downward direction, the pin insertion hole 212 formed on the top of the nozzle holder is coupled to the guide pin 142 located second from the top of the water guide. . That is, the guide pin 142 formed on the top of the water guide is not coupled to any one. Then, the washing water inlet 213 or the like formed in the nozzle holder is coupled to the guide pins 142 and the like formed in the water guide in order to complete the coupling.

Therefore, according to the above configuration, the wash water introduced into the water guide has a shape of a flow path through which the wash water inlet communicates with the wash water outlet has a substantially “a” shape or step shape. That is, the flow of the washing water flows in the forward direction, so that the hydraulic pressure can be maintained. That is, the flow direction of the washing water rising along the water guide is moved to the injection nozzle without being reversed.

In addition, the pin insertion hole 212 formed at the lowermost portion of the holder connector 220 is not coupled to any one, but when the lower rack is retracted, it is in close contact with the water guide by the side of the lower rack. That is, the pin insertion hole 212 formed at the lowermost portion of the holder connector 220 is coupled to the guide pin when the upper rack is lifted upward. In addition, when the upper rack is lowered in the downward direction, as described above, the upper rack is in close contact with the side of the lower rack and serves to be in close contact with the water guide.

7 is a perspective view showing a state in which the nozzle holder and the water guide according to another embodiment of the present invention are combined.

Referring to FIG. 7, the nozzle holder and the water guide coupling structure of the dishwasher according to the present invention may include a holder connector 210 having a holder body 210 coupled to the spray nozzle, a washing water inlet 213, and a pin shovel inlet 212. 220, a packing member 214 inserted into the washing water inlet and sealing, a water guide 140 coupled to the nozzle holder, a guide pin 142 and a washing water outlet 141 formed on the water guide, An extension part 215 extending downward of the holder connector 220 is included.

In detail, the extension part 215 is formed by extending downward of the holder connector 220. In addition, the extension part 215 may be in close contact with the lower rack to be tighter to the water guide 140.

In other words, when the lower rack is retracted, the extension part 215 is pressed on the outer surface of the lower rack and is strongly adhered to the water guide, thereby preventing the washing water from leaking out. The process of combining the nozzle holder and the water guide is as described above.

Preferably, as shown in the drawings provided by the present invention, the nozzle holder and / or the water guide is preferably formed with the extension and a plurality of the guide pins, but is not limited thereto. That is, the extension part may be extended or contracted to a predetermined length within a close contact with the lower rack, and the guide pin may utilize a space between the upper rack and the lower rack while the upper rack and the lower rack are inserted into the tub. Various numbers, shapes, and methods may be attempted within the range of possible ranges, which will be understood to be included in the spirit of the present invention.

By the above configuration, the nozzle holder is stably coupled to the water guide by the pin insertion hole and the extension part further formed at the lower portion of the holder connector.

Dishwasher equipped with a nozzle holder coupling structure according to the present invention constituting the configuration as described above is formed at the end of the upper nozzle is coupled to the water guide in the process of the top nozzle is separated from the water guide and then mounted again The positions of the wash water inlet and the wash water outlet of the nozzle holder are formed to lie in the forward direction. Therefore, by removing the hydraulic loss of the washing water flowing through the water guide to improve the washing efficiency, it is possible to maintain the water pressure of the washing water, there is an effect that the noise is reduced.

In addition, the guide pin is further formed on the water guide. Therefore, the washing water inlet or the pin insertion hole of the nozzle holder are both coupled to the guide pin or the washing water outlet pipe of the water guide, while extending a predetermined length downwardly to the pin insertion hole of the upper nozzle holder to form an extension. That is, when the upper nozzle holder is coupled to the water guide together with the upper rack, the lower rack presses the extension part when the lower rack is mounted. Accordingly, the nozzle holder is prevented from being spaced apart from the water guide due to vibration generated when the motor rotates in the cleaning process.

Claims (7)

A nozzle holder including a holder body having a washing water flow path formed therein, and a holder connector extending at one end of the holder body and having at least one washing water inlet and a pin insertion hole; A spray nozzle rotatably coupled to the other end of the nozzle holder; And a water guide in which the holder connector is brought into close contact with the front surface and has a washing water discharge hole communicating with any one of the washing water inlets, and at least one guide pin inserted into the pin insertion hole. The washing water inlet includes a first washing water inlet and a second washing water inlet formed at a position spaced apart from the first washing water inlet by a predetermined interval downward, And the first washing water inlet is in communication with the washing water discharge port, and the nozzle holder coupling structure of the dish washing machine is moved to the spray nozzle without reversed flow direction of the washing water rising along the water guide. The method of claim 1, The first washing water inlet is a nozzle holder coupling structure of the dishwasher is located on the same line as the center of the holder body. 3. The method of claim 2, And the first wash water inlet is in communication with the wash water outlet of the water guide, and the flow of the wash water is approximately "a". 3. The method of claim 2, And the second washing water inlet communicates with the washing water outlet of the water guide so that the flow of the washing water has a step shape. 3. The method of claim 2, An upper rack to which the nozzle holder is coupled to a bottom surface; A lower rack is further located below the predetermined space spaced apart from the upper rack, The holder connector of the nozzle holder is a nozzle of the dishwasher, characterized in that the lower portion is formed in a length that is in close contact with the water guide by the lower rack in a state in which the first washing water inlet is in communication with the washing water outlet of the water guide. Holder coupling structure. A nozzle holder including a holder body having a washing water flow path formed therein, and a holder connector extending at one end of the holder body and having at least one washing water inlet and a pin insertion hole; A spray nozzle rotatably coupled to the other end of the nozzle holder; And a water guide in which the holder connector is brought into close contact with the front surface and has a washing water discharge hole communicating with the washing water inlet, and at least one guide pin inserted into the pin insertion hole. The flow direction of the washing water rising along the water guide is moved to the injection nozzle without being reversed, The guide pin is a nozzle holder coupling structure of the dishwasher, characterized in that at least one formed on the upper side and the lower side of the washing water discharge port, respectively. The method of claim 1, When any one washing water inlet is in communication with the washing water discharge port, the remaining washing water inlet is sealed by the guide pin, characterized in that the nozzle holder coupling structure of the dishwasher.

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