KR20070105046A - dish washer - Google Patents

Abstract

The present invention relates to a dishwasher, and more particularly, to a dishwasher equipped with an air brake capable of blocking water flowing back through a siphon hole by improving the structure of the air brake of the dishwasher.

Dishwasher according to the spirit of the present invention cabinet; An air brake mounted to one side of the cabinet; At least one siphon hole formed on a drain passage of the air brake; And a check valve for selectively closing the siphon hole; Included.

As proposed, by blocking the wash water flowing back through the siphon hole in the drainage process of the air brake, there is an effect that can prevent the residual water phenomenon and cleaning failure in the tub.

Description

Dishwasher {Dish washer}

1 is a cross-sectional view showing a conventional air brake.

2 is a cross-sectional view schematically showing a dish washer according to the spirit of the present invention.

3 is a perspective view showing an air brake according to the spirit of the present invention;

4 is an enlarged view of a portion A of FIG. 3.

5 is a perspective view showing a normal state of the check valve of the air brake according to the spirit of the present invention.

Figure 6 is a perspective view showing the operating state of the check valve of the air brake according to the spirit of the present invention.

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

10: air brake 11: water hose connection

17: sump drain connector 18: drain hose connector

100: dishwasher 110: tub

190: sump 300: check valve

310: drain hole 320: guide rib

330: siphon prevention hole 350: drain chamber portion

The present invention relates to a dishwasher, and more particularly, to a dishwasher equipped with an air brake capable of blocking the water flowing back through the siphon hole by improving the structure of the air brake of the dishwasher.

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. The washing water sprayed from the spray nozzle is ejected at a high pressure to hit the surface of the dish stored in the dish 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 for washing dirt on the tableware, a hem process for rinsing the dishes after the washing process is finished, and a drying process for removing moisture from the surface of the dish after rinsing. Is done.

Here, after the washing as described above, the washing water mixed with the detergent and the like during the washing is discharged to the outside through the dishwasher tub or the air brake.

1 is a cross-sectional perspective view showing an air brake of a conventional dish washing machine.

Referring to FIG. 1, an air brake 1 mounted to a conventional dishwasher includes a water hose connector 2 for supplying washing water, a sump drain connector 3 connected to a sump, and into which the washing water flows, and the sump drainage. A drain hose connector 4 which is connected to the connector and discharges the washing water, and a siphon prevention hole 5 and a check valve 6 interposed between the sump drain connector and the drain hose connector are included.

In detail, the conventional air brake 1 is formed with the water hose connector 2 so that the washing water flows into the air brake 1 through the water hose connector 2. And the contaminated washing water which has been washed is introduced through the sump drain connector 3 and flows out through the fryer drain hose connector 4. Here, a check valve 6 and a siphon prevention hole 5 are formed on the upper side of the sump drain connector 3 to prevent the drained washing water from flowing in again.

However, in the process of draining the contaminated washing water, the contaminated washing water passing through the air brake flows back into the sump through the sump through the siphon prevention hole 5.

In this case, as a result, there is a problem that the washing efficiency is lowered due to the residual water phenomenon of the washing water in the tub and the reflow of contaminated water. And since the unnecessary washing process is repeated, there is a big problem that leads to power loss and consumer complaints.

The present invention has been proposed to solve the above problems, check that the contaminated washing water flowing out through the air brake to the drain back during the washing process of the dishwasher is prevented from flowing back into the tub It is an object to provide a dishwasher equipped with an air brake on which a valve is mounted.

Dishwasher according to the present invention for achieving the object as described above, the cabinet forming the appearance, the air brake mounted on one side of the cabinet, at least one siphon hole formed on the drain passage of the air brake and A check valve is included to selectively close the siphon hole.

By the above configuration, there is an effect that the contaminated washing water drained through the air brake during the draining process during the washing process is prevented from flowing back into the tub.

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

The siphon prevention hole described below may be referred to as a siphon hole.

2 is a schematic cross-sectional view of the dishwasher according to the spirit of the present invention, Figure 3 is a cross-sectional view of the air brake with a check valve according to the spirit of the present invention.

2 and 3, the dishwasher 100 according to the spirit of the present invention includes a tub 110 constituting a washing tank, a door 130 opening and closing one side of the tub, and received inside the tub. Racks 170 and 180, nozzles 150 and 160 for spraying the washing water to the rack, sump 190 to which the washing water is supplied and stored, and air brake 10 for supplying a part of the washing water to the sump 190 are included. do.

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 170 and / or lower rack 180 to the outside of the washing tank. Tableware is stored in the racks 170 and 180. 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 190. After a certain amount of washing water is introduced into the sump, the washing pump 192 equipped with the washing motor 193 is operated.

In detail, the washing motor 193 is driven to rotate the impeller (not shown) installed in the washing pump 192 to suck the washing water, and the sucked washing water is pumped to the water guide or the lower nozzle.

In addition, the heater in the heating unit 191 connected thereto together with the driving of the washing pump 192 is operated, and the washing water is heated. The heated wash water is simultaneously or selectively pumped into the lower nozzle 160 and the water guide 140.

Meanwhile, the wash water pumped into the water guide 140 is finally moved to the top nozzle and the upper nozzle 150 and sprayed into the washing tank. Then, the dishes stored in the racks 170 and 180 are washed by the sprayed washing water.

Here, the top nozzle sprays the washing water vertically downward, and the upper nozzle 150 sprays the washing water vertically upward, thereby washing the dishes stored in the upper rack 170.

In addition, the lower nozzle 160 sprays the washing water vertically upward, thereby washing the dishes stored in the lower rack 170. In addition, by forming an injection hole in the bottom surface of the upper nozzle 150, the washing water is sprayed in both the up and down directions, it can be configured to simultaneously wash the upper side of the dishes accommodated in the lower rack (180).

In addition, the foreign matter generated in the cleaning process is caught by a filter (not shown) provided in the sump 190, and broken finely by a disposer mounted in the sump 190. When the washing process is completed, the contaminated washing water is discharged to the outside of the dishwasher 100 through the sump and the drain connector 17 of the air brake according to the present invention through a drain pump (not shown) together with the foreign matter. do.

In addition, when the washing water is discharged to the outside, clean washing water is introduced into the sump 190 again through a water supply hose connector, and sprayed through the spray nozzles 150 and 160 in the same manner as the washing step. Then, the rinsing step is performed using the sprayed clean water. When the rinsing step is completed, the washing step is completed by going through a drying step.

Here, the inner side of the dishwasher is provided with an air brake 10 connected to the sump with a case interposed therebetween, wherein the air brake 10 has a check valve 300 that operates during a drain stroke according to the spirit of the present invention. ) Is provided. And the structure of the air brake with the check valve 300 will be described in more detail with reference to the following drawings.

On the other hand, with reference to the accompanying drawings will be described in detail the function of the air brake.

The air brake 10 is formed on the bottom surface of the water supply hose connector 11 in which tap water from the raw water pipe is introduced, and a flow rate detection flow meter 12 for detecting an amount of raw water entering the water hose connection 11. ), A regeneration water chamber 21 for storing regeneration water introduced by the flowmeter 12, and a water supply passage formed in the air brake 10, and the raw water continues to flow even if the water supply is stopped. A siphon prevention gap 13 is included to prevent the siphon phenomenon.

In addition, the tub is connected to the tub with the air brake 10 is attached, the tub inlet 14 to allow a portion of the water introduced into the air brake 10 into the tub, and the air brake 10 It includes a softener connector (15) for the water introduced into the) to be moved to the softener.

In addition, a regenerator connector 16 for allowing a portion of the water introduced into the air brake 10 to be moved to a regenerator (not shown), and to allow the washed water to be discharged to the outside by a drain pump (not shown). A sump drain connector 17 connected to the sump and a drain hose connector 18 for discharging water moved to the sump drain connector 17 to the outside along the drain channel formed in the air brake 10 are included.

In addition, a drain check valve 300 according to the spirit of the present invention for preventing the drainage of the drained washing water is mounted on the sump drain connector 17.

And the operation principle of the drain check valve 300 will be described in more detail below with reference to the drawings.

First, the function of the air brake 10 will be described in order to help the understanding of the present invention.

Initially, the raw water obtained through the feed hose connector 11 is moved upward along the feed passage formed in the air brake 10. And the water supplied is dropped to the center portion of the air brake 10 is collected in the water softener connector (15). The water softener is connected to a sump (not shown) through an ion exchange resin filter formed in the softener through the water softener connector 15. Then, when the washing water is continuously supplied, water is filled in the air brake 10, and a portion of the filled water is collected by the regenerator connector 16 formed next to the softener connector 15.

In addition, an air inlet 20 is formed at an upper edge of the air brake 10 to allow air to enter from the outside. The suctioned air communicates with the siphon prevention gap 13 formed on the upper flow path of the air brake 10, thereby preventing the siphon phenomenon in which water continues to flow while the water supply is stopped.

On the other hand, the washing water collected in the softening device connector 15 is softened to facilitate the washing operation by filtering impurities contained in the raw water while passing through the ion exchange resin filter provided in the softening device.

In addition, the washed dirty water flows along the drain passage through the sump drain connector 17, and is discharged to the outside of the dishwasher along the drain hose (not shown) connected to the drain hose connector (18). A small amount of washing water collected in the regenerator connector 16 passes through the regenerator to purify the ion exchange resin filter.

4 is an enlarged view of a portion A of FIG. 3, FIG. 5 is a perspective view showing a check valve in a normal state before draining according to the spirit of the present invention, and FIG. A perspective view showing a valve.

4 to 6, the air brake according to the present invention is connected to the sump so that the washing water introduced through the water hose connector 11 and the washing water introduced through the water hose hose 11 are drained after the washing is completed. A sump drain connector 17, a drain chamber part 350 formed on the sump drain connector 17, a drain hose connector 18 connected to the sump drain connector through the drain chamber part, and It includes a check valve 300 that is seated on the upper side of the sump drain connector 17.

In detail, the sump drain connector 17 has a drainage hole 310 formed at an upper portion thereof so that the washing water moves to the inside of the air brake 10. In addition, an upper portion of the drainage hole 310 is provided with a drainage chamber part 350 in which wash water drained temporarily exists. And a predetermined portion of the drain chamber 350 is formed with a siphon prevention hole 330 to prevent the backflow of the washing water. Guide drain 320 for guiding the check valve 300 is formed in the drain chamber 350.

Preferably, the check valve 300 is preferably formed into a ball type having a predetermined diameter.

In more detail, the contaminated washing water introduced through the sump drain connector 17 flows into the drain chamber 35 through the drain hole 350. Here, the check valve 300 is preferably formed of a rubber or metal material having a predetermined weight by the washing water introduced through the drainage hole 350, but is not limited thereto. Various shapes and materials that can be provided may be presented, which will be understood to be included in the spirit of the present invention. In addition, at least one guide rib 320 for guiding the check valve 300 is formed in the drain chamber 350.

In addition, the guide rib is preferably formed in the shape of a pillar protruding a predetermined length as shown in the drawings, but is not limited thereto, and may be manufactured in the form of a rib formed by bending a predetermined curvature, which may be manufactured by a person skilled in the art. Naturally, it can be easily derived.

In addition, a siphon prevention hole 330 that is selectively opened and closed by the ball type check valve 300 guided by the guide rib 320 is formed in the drainage chamber part 350. Therefore, during the drainage, the siphon prevention hole 330 is closed by the check valve, and when it is normal, the siphon prevention hole 330 is seated in the drainage hole 310.

In other words, the check valve 300 rises in the drainage process to shield the siphon prevention hole 330, and shields the drainage hole 310 in a process other than the drainage process.

In addition, the siphon prevention hole 330 is to be easily seated when the ball-shaped check valve 300 is shielded, the edge portion of the siphon prevention hole of the portion where the check valve is in close contact with a predetermined curvature It is curved and formed. That is, the front edge portion of the siphon prevention hole 330 is formed to be curved with the same curvature as the check valve 300.

Here, when the ball type check valve 300 is seated, the siphon prevention hole 330 may include a sealing member formed of a rubber material having a predetermined elasticity so that the contaminated washing water does not flow in.

Hereinafter, the operation principle of the check valve 300 will be briefly described.

First, during the process of washing the dishwasher, when the process of draining the washed contaminated washing water is carried out, the washing water mixed with finely crushed food residues through the sump through the sump drain connector 17 It flows into the brake 10. Here, the washing water introduced through the sump drain connector 17 is introduced through the drainage hole 310, in which the ball type check valve 300 seated in the drainage hole 310 is subjected to hydraulic pressure. Injured.

Then, the check valve 300 is floated by the hydraulic pressure is rocked in the drain chamber 350. And the ball-type check valve 300 is moved to the right side in the drawing by the guide rib 320. Then, the siphon prevention hole 330 of the drain chamber portion 350 is moved to the portion formed, the siphon prevention hole 330 is naturally closed by the water pressure in accordance with the continuous inflow of the washing water. Thereafter, the polluted washing water is discharged to the outside of the air brake 10 through the drain hose connector 18 while the siphon prevention hole 330 is sealed by the ball check valve 300. Will be.

Therefore, the ball-type check valve 300 rises during drainage to seal the siphon prevention hole 330, thereby solving the conventional problem. That is, in the related art (see FIG. 1), the siphon prevention hole 5 is formed between the sump drain connector 3 and the drainage hole, and thus the contaminated washing water that has been washed through the siphon prevention hole is the siphon. It moved along the flow path connected with the prevention hole 5, and was made to flow out into the tub.

In other words, unlike the conventional structure, the air brake 10 removes a flow path that flows back through the siphon prevention hole 310 and the siphon prevention hole 310 is the drainage chamber part 350. It is formed at a predetermined portion of.

By the above configuration, it is possible to prevent backwashing of contaminated washing water at the time of drainage.

The contaminated washing water flowing out through the air brake in the drainage process during the washing process of the dishwasher by the air brake provided with the check valve according to the present invention constituting the configuration as described above is flowed back into the tub There is an effect that can prevent the phenomenon.

In addition, the ball-type check valve made of a separate component in accordance with the spirit of the present invention is operated independently only by the hydraulic pressure, so that even if repeated use, the risk of breakage and abrasion is eliminated, and also easy to install and replace There is an effect that can be achieved.

In addition, the backflow of the washing water is prevented to prevent residual water in the tub, and the inflow of contaminated washing water is prevented, thereby improving washing efficiency.

Claims (9)

cabinet; An air brake mounted to one side of the cabinet; At least one siphon hole formed on a drain passage of the air brake; And A check valve for selectively closing the siphon hole; Dishwasher included. The method of claim 1, And at least one guide rib formed at a position adjacent to the siphon hole to guide the check valve. The method of claim 1, The check valve is a dishwasher, characterized in that the ball having a predetermined diameter. The method of claim 1, The check valve is a dishwasher, characterized in that molded in a rubber or metal material having a predetermined weight. The method of claim 1, The check valve is raised in the drainage process to shield the siphon hole, in the process other than drainage, the dishwasher, characterized in that to shield the drainage hole of the drain passage. The method of claim 1, The check valve is a dishwasher, characterized in that the siphon hole is open when normal, and closed when drained, to prevent the drainage of the washing water to flow back. The method of claim 1, And a sealing member provided in the siphon hole. The method of claim 1, And the siphon hole rim of the portion in which the check valve is in close contact with each other so that the siphon hole is completely closed by the check valve. The method of claim 1, The front edge portion of the siphon hole is curved with the same curvature as the check valve.

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