KR101296003B1 - Dish washer and water supply apparatus thereof - Google Patents

Abstract

The present disclosure relates to a dishwasher. Dishwasher according to one aspect, the tub for receiving the dish; Sump for supplying water to the tub; And a water supply device for supplying water supplied from the outside to the sump, wherein the water supply device includes: a water supply passage through which water introduced from the outside flows; and a water chamber in which water supplied along the water supply passage is stored. The body is formed, and at least one nozzle to allow the water in the water supply flow in the inclined direction toward one surface of the body.

Description

Dish washer and water supply apparatus

The present disclosure relates to a 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 for supplying the washing water to the spray nozzle, and the washing water for the sump. And a washing pump for pumping the washing water of the sump.

The dishwasher is configured to drive the washing pump 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 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 a view schematically showing a water supply device according to the prior art.

Referring to FIG. 1, the conventional water supply device 10 is formed on a bottom surface and detects a water supply hose connector 11 into which tap water is introduced from a raw water pipe, and an amount of raw water flowing into the water supply hose connector 11. Water flow rate detection flow meter 12, the water chamber 21 to store the incoming water, an air inlet 20 for allowing air to be sucked into the water supply device from the outside, and the air intake 20 It includes a siphon prevention hole 13 to prevent the siphon phenomenon in which the raw water is continuously introduced even if the water is stopped so that the air sucked through the inlet flows into the water supply passage. The water supply flow passage is bent upwardly after flowing in the water supply device and then extends downward again. Thus, the water on the water supply passage is discharged to the water chamber 21 at an intermediate level of the water supply device.

In addition, the water supply device is in communication with the tub to which the water supply device 10 is attached to the air inlet, a tub connector 14 for allowing a portion of the water introduced into the water supply device 10 flows into the tub. ), And a softening device connector 15 for allowing the water introduced into the water supply device 10 to be moved to the softening device.

In addition, the water supply device 10 is a regenerator connector 16 for allowing a portion of the water introduced into the water supply device is moved to a regenerator (not shown), and the washed water is washed by a drain pump (not shown). A sump drain connector 17 connected to the sump so as to be discharged to the outside, and a drain hose connector for discharging water moved to the sump drain connector 17 to the outside along a drain flow path formed in the water supply device 10. (18) is included.

According to the conventional water supply apparatus as described above, since water introduced into the water supply flow path is supplied to the water chamber at an intermediate position of the air brake, the contact area between the water and the air brake is limited when water is supplied.

SUMMARY OF THE INVENTION An object of the present invention is to provide a dish washer and its water supply apparatus, in which heat exchange performance between water and a tub of the water supply apparatus is improved.

Dishwasher according to one aspect, the tub for receiving the dish; Sump for supplying water to the tub; And a water supply device for supplying water supplied from the outside to the sump, wherein the water supply device includes a water supply passage through which water introduced from the outside flows, and a water chamber in which water supplied along the water supply passage is stored. The body is formed, and at least one nozzle to allow the water in the water supply flow in the inclined direction toward one surface of the body.
In one embodiment, a water supply device for a dishwasher includes: a body including a water chamber in which water is stored and a water supply passage for supplying water to the water chamber; At least one nozzle for injecting water in a direction inclined toward one surface of the body in the water supply passage.

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According to the proposed invention, since water to be used for the next stroke is supplied to the water supply apparatus during the execution of a specific stroke, the water of the water supply apparatus is heat-exchanged with the heat of the tub so that the efficiency in the next stroke can be improved. have.

In addition, the contact area between the water and the first surface of the body is increased by the position of the plurality of branches, the nozzles provided in each branch, the direction of water sprayed from the nozzle, the forming portion and the flow guide formed on the body, There is an advantage that the heat exchange efficiency of the water of the water supply device and the heat of the tub is improved.

1 shows schematically a water supply apparatus according to the prior art;
2 is a cross-sectional view schematically showing a dish washing machine according to a first embodiment of the present invention.
3 is a cross-sectional view showing a water supply apparatus according to a first embodiment of the present invention.
4 is a bottom view of the nozzle installed in the water supply device;
5 is a cross-sectional view taken along the line AA of FIG. 3.
6 is a view for explaining the arrangement of the water supply device and the tub according to the first embodiment of the present invention.
7 is a view for explaining the arrangement of the water supply device and the tub according to the second embodiment of the present invention.
8 is a schematic view of a water supply apparatus according to a third embodiment of the present invention.
9 is a schematic view of a water supply apparatus according to a fourth embodiment of the present invention.

Hereinafter, embodiments will be described in detail with reference to the drawings.

2 is a cross-sectional view schematically showing a dish washing machine according to a first embodiment of the present invention.

Referring to FIG. 2, the dishwasher 100 according to the present embodiment includes a case 101 forming an exterior and a tub provided inside the case 101 and forming a washing space for washing dishes. 104, a sump 105 provided below the tub 104 to collect washing water for washing dishes, and a door 102 to open and close the tub 104.

The control panel 103 for controlling the operation of the dish washing machine is provided above the front surface of the door 102. In the inner space of the tub 104, a plurality of racks on which tableware is placed is provided. The plurality of racks include an upper rack 110 and a lower rack 112 positioned below the upper rack 110. In the present embodiment, for example, two racks 110 and 112 are provided in the tub 104, but the number of the racks in the present embodiment is not limited.

In addition, the tub 104 is provided with a plurality of washing nozzles for receiving the washing water from the sump 105 and spraying the washing water to the dishes placed on the racks 110 and 112.

The plurality of washing nozzles may include a lower nozzle 120 connected to an upper side of the sump 105 and an intermediate nozzle 121 positioned above the lower nozzle 120 to receive washing water from the sump 105. And a top nozzle 122 positioned above the intermediate nozzle 121 and receiving washing water from the sump 10.

The sump 105 is connected to a wash water guide 123 for delivering wash water to the intermediate nozzle 121 and the top nozzle 122. The washing water guide 123 may be formed with a single washing water flow path, or two washing water flow paths may be partitioned. Alternatively, each of the plurality of wash water guides may deliver wash water to each of the intermediate nozzle 121 and the top nozzle 122.

The dishwasher 100 further includes a water supply device 200 disposed between the tub 104 and the case 102 to guide the flow of the washing water. The water supply device 200 stores water to be used for washing.

On the other hand, the dishwasher performs a plurality of strokes until the washing of the dishes is completed. In general, the plurality of strokes may include at least a washing stroke for washing the dishes and a rinsing stroke for rinsing the dishes. Depending on the type of dishwasher, a drying stroke may be added after the completion of the rinsing stroke.

The washing stroke may be a single stroke or may be divided into a preliminary washing stroke and a main washing stroke. The heater (not shown) does not operate in the preliminary washing stroke, and the heater may operate in the present washing stroke. If the cleaning stroke is a single stroke, the heater may operate in at least some sections of the stroke.

The rinse stroke may be a single stroke or may be divided into a normal rinse stroke and a heated rinse stroke. The heater may not operate in a normal rinse stroke, and the heater may operate in a heated rinse stroke. If the rinsing stroke is a single stroke, the heater may be operated in at least some sections of the stroke.

Meanwhile, water is supplied to the water supply device from the outside before starting at least one of the entire strokes for washing the dishes. At this time, the water supply device collects water to be used for the next stroke.

Since the heater is operated when the main washing is performed, the temperature of the washing water is higher than the water temperature of the water supply device. Therefore, in order to increase the stroke efficiency in the normal rinse stroke, heat exchange between water of the water supply device and heat in the tub is required before the normal rinse stroke is started. Even when the washing stroke is a single stroke, heat exchange of water in the water supply device with heat in the tub is required before the rinsing stroke so that the stroke efficiency in the next rinsing stroke is increased.

In addition, in the normal rinse stroke, the heater is not operated, but the temperature of the washing water is higher than the temperature of the water of the water supply device due to the latent heat inside the washing tank. Thus, in order to increase the stroke efficiency in the heating rinse stroke, it is necessary to exchange heat with the water and the tub of the water supply device before the heating rinse stroke is started.

Hereinafter, a water supply apparatus to which a structure for improving heat exchange performance of water and tub of the water supply apparatus is applied will be described in detail.

3 is a cross-sectional view illustrating a water supply device according to a first embodiment of the present invention, FIG. 4 is a bottom view of a nozzle installed in the water supply device, FIG. 5 is a cross-sectional view taken along AA of FIG. 3, and FIG. 6 is a view for explaining the arrangement of the water supply device and the tub according to the first embodiment of the present invention.

3 to 6, the water supply device 200 according to the present embodiment includes a body 201 forming an external shape. The body 201 includes a first surface 202 facing the tub 104 and a second surface 203 opposite to the first surface 202.

The first surface 202 may be in direct contact with the tub 104. In this case, the first surface 202 and the tub 104 are directly heat exchanged. As another example, as illustrated in FIG. 5, a heat conductive member 300 may be interposed between the first surface 202 and the tub 104. In this case, the first surface 202 and the tub 104 may be heat exchanged by the heat conductive member 300. The thermally conductive member 300 may be a metal material, igraph (graphite is the main component of the US Graphgraf company) and the like.

The body 201 has a water inlet 204 to which a water supply pipe 130 connected to an external water source (not shown) is connected, and a water supply passage 205 through which water introduced into the water inlet 204 flows. And a water chamber 206 in which water flowing along the water supply passage 205 collects.

In addition, the body 201 includes a first drain connection part 242 and a second drain path 152 to which the first drain channel 151 connected to the drain pump 150 connected to the sump 105 is connected. ) May further include a second drain connection portion 244 connected thereto.

In addition, the body 201 has an air inlet hole 208 for introducing external air (air outside the tub) and a communication hole 207 for communicating the body 201 with the tub 104. It may further include.

In addition, the body 201 may be connected to the softening device 140 to remove the hardness component contained in the water. The water in the water chamber 206 may be supplied to the softening device 140 to be introduced into the body 201 again after the hardness component is removed, and finally supplied to the sump 105. Of course, it is also possible that the water passing through the softening device 140 is directly supplied to the sump 105.

In detail, the water supply passage 205 extends upward from the lower side of the body 201. The water supply passage 205 extends in the horizontal direction from the upper side of the body 201. That is, the water supply passage 205 includes a horizontal flow passage 205a.

A plurality of branch portions 210 are formed in the horizontal flow path 205a. The plurality of branch portions 210 extend downward from the horizontal passage 205a. The plurality of branches 210 are spaced apart in the horizontal direction. Therefore, water may be discharged downward from each branch 210.

The lower surface 211 of each branch portion 210 is inclined. Specifically, the lower surface 211 of the branch portion 210 extends downward from the first surface 202 of the body 201 toward the second surface 203.

The lower surface 211 of each branch portion 210 is provided with a nozzle 220 for injecting water into the water chamber 206. The nozzle 220 may be coupled to the nozzle coupling unit 212 formed on the bottom surface 211 of the branch portion 210. For example, a thread is formed on an outer surface of the nozzle 220 and an inner circumferential surface of the nozzle coupling unit 212 so that the nozzle 220 may be fastened to the nozzle coupling unit 212. As another example, the nozzle 220 may be integrally formed on the bottom surface of the branch portion 210.

When the nozzle 220 is coupled to the branch portion 210, the nozzle 220 has a lower surface of the branch portion 210 in a direction parallel to the normal direction of the lower surface 211 of the branch portion 210 ( 211). Therefore, the spray direction of water in the nozzle 220 is inclined in the vertical direction as shown in FIG. That is, water is sprayed from the nozzle 220 toward the first surface 202 of the body 201. Water sprayed toward the first surface 202 of the body 201 flows along the first surface 202 of the body 201.

As such, the water sprayed from the nozzle 220 may flow along the first surface 202 of the body 201, thereby increasing the area and time for the water to contact the body 201. Heat exchange performance with the tub 104 may be improved.

As another example, the lower surface 211 of the branch portion 210 may form a horizontal plane, and the nozzle 220 may be inclinedly coupled to or integrally formed on the lower surface of the branch portion 210. In this case, the water sprayed from the nozzle 220 may be sprayed toward the first surface 202 of the body 201.

The nozzle 220 includes a spray hole 222. At this time, the injection hole 222 is formed in a non-circular shape. For example, the injection hole 222 is formed in an elliptical or similar shape in one long hole type, and is formed long in a direction parallel to the arrangement direction of the branch portion 210. The reason is to allow water to be widely sprayed in the left and right directions with reference to FIG. 3, so that the contact area and time of the water and the body 201 are increased.

In summary, the jet direction of water in the nozzle 220 is the vertical direction, and the arrangement direction of the nozzle is a left and right direction (or front and rear direction) that intersects the vertical direction.

A forming unit 230 is formed on at least a first surface 202 of the body 201 to increase a contact area with water sprayed from the nozzle 220. The forming unit 230 is formed by recessing a portion of the first surface 202 toward the second surface 203.

In this case, although not shown, the forming unit may be formed at a position corresponding to the forming unit 230 of the tub 104. In this case, since the forming part of the tub 104 may be seated on and contact with the forming part 230 of the body 201, the contact area may be increased to improve heat exchange performance.

In addition, a plurality of flow guides 231 and 232 are formed on at least the first surface 202 of the body 201 to prevent water from falling vertically. The plurality of flow guides 231 and 232 include a first flow guide 231 inclined in a first direction and a second flow guide 232 inclined in a second direction opposite to the first direction. That is, the first euro guide 231 is inclined downward from left to right in FIG. 3, and the second euro guide 232 is inclined downward from right to left.

In the present embodiment, the flow path guides 231 and 232 are exemplary, and if there is a structure for preventing the sprayed water from falling vertically, the flow guides 231 and 232 are not limited to the inclination direction, length and shape. However, the flow guides 231 and 232 may have a predetermined length in the left and right directions with reference to FIG. 3 to prevent the water from falling vertically.

According to the present embodiment as described above, since water to be used for the next stroke is supplied to the water supply apparatus during the execution of a specific stroke, the water of the water supply apparatus is heat-exchanged with the heat of the tub, so that the efficiency in the next stroke can be improved. There is an advantage.

In addition, the contact area between the water and the first surface of the body is increased by the position of the plurality of branches, the nozzles provided in each branch, the direction of water sprayed from the nozzle, the forming portion and the flow guide formed on the body, There is an advantage that the heat exchange efficiency of the water of the water supply device and the heat of the tub is improved.

7 is a view for explaining the arrangement of the water supply apparatus and the tub according to the second embodiment of the present invention.

The other part of this embodiment is the same as that of the first embodiment, except that there is a difference in the heat exchange structure between the water supply device and the tub. Therefore, only the characteristic parts of the present embodiment will be described below.

Referring to FIG. 7, one or more openings 250 may be formed on a surface facing the tub 104 in the water supply device 200 according to the present embodiment. In addition, the heat conductive member 300 described in the first embodiment may be interposed between the tub and the water supply device. In this case, the heat conductive member 300 may cover the one or more openings 250 on the outside of the water supply device 200.

According to the present embodiment, since a part of the water of the water supply device 200 is in direct contact with the heat conducting member 300 and heat exchanged with the heat of the tub 104, the heat exchange performance is improved.

8 is a schematic view of a water supply apparatus according to a third embodiment of the present invention.

This embodiment is the same as the first embodiment in other parts, except that the flow guide structure is different. Therefore, only the characteristic parts of the present embodiment will be described below.

Referring to FIG. 8, in the water supply device 200 according to the present embodiment, a plurality of zigzag flow paths 263 are formed to allow water injected from each nozzle 220 to flow in a zigzag manner in the water chamber 206. Flow path guides 261 and 262.

The plurality of flow path guides 261 and 262 may be spaced apart from one or more first flow guides 261 extending downward from right to left with respect to the first flow guide 261 in the vertical direction. It includes one or more second euro guide 262 extending inclined downward from left to right. The first flow guide 261 and the second flow guide 262 may be alternately arranged in the vertical direction.

According to the present embodiment, since the water sprayed from the nozzles 220 may flow in a zigzag in the water supply apparatus while contacting the first surface 202 of the body 201, the water supply apparatus and the tub Has the advantage that the heat exchange performance can be improved.

9 is a view schematically showing a water supply apparatus according to a fourth embodiment of the present invention.

This embodiment is the same as the first embodiment in other parts, except that the flow guide structure is different. Therefore, only the characteristic parts of the present embodiment will be described below.

Referring to FIG. 9, in the water supply device 200 according to the present embodiment, a plurality of flow path guides 271 are formed to allow the water injected from each nozzle 220 to be divided and flow in the left and right directions. The flow paths 272 are formed in the water chamber 206 by the flow path guides 271. At this time, each of the flow path guides 271 is bent in a zigzag form so that each of the flow paths 272 is formed in a zigzag form.

According to the present embodiment, since the plurality of flow passages 272 are partitioned by the plurality of flow guides 271, water can flow through the water supply apparatus as a whole, thereby improving heat exchange performance between the water supply apparatus and the tub. It has the advantage of being.

104: tub 200: water supply device
220: nozzle

Claims (17)

Tub for receiving tableware;
Sump for supplying water to the tub; And
It includes a water supply device for supplying water supplied from the outside to the sump,
The water supply device, and a water supply flow passage through which water introduced from the outside flows,
A body having a water chamber in which water supplied along the water supply passage is stored;
And at least one nozzle for spraying water from the water supply passage in an inclined direction toward one surface of the body. The method of claim 1,
The nozzle is provided in plurality, the plurality of nozzles are disposed spaced apart in the horizontal direction. 3. The method of claim 2,
The water supply passage extends upward from the lower side of the body and extends in the horizontal direction from the upper side of the body,
A plurality of branch portions are formed in the water supply passage extending in the horizontal direction,
And each nozzle is provided in the plurality of branches. The method of claim 3, wherein
The lower surface of each branch is inclined, the dishwasher provided with each nozzle on the inclined lower surface. The method of claim 3, wherein
And each nozzle is inclined on a lower surface of each branch portion. 3. The method of claim 2,
Each nozzle is formed with a rectangular injection hole,
The dish washing machine is formed in the injection hole long in a direction parallel to the arrangement direction of the plurality of nozzles. The method of claim 1,
The body has a first surface facing the tub,
A second surface opposite to the first surface,
Towards the first surface, water is sprayed from the nozzle. The method of claim 7, wherein
And a forming unit formed on the first surface to increase a contact area with water sprayed from the nozzle. The method of claim 7, wherein
And at least one flow guide formed on the first surface to prevent the water sprayed from the nozzle from falling vertically. The method of claim 9,
The nozzle is provided in plurality,
The at least one flow guide is dishwasher disposed inclined in a direction parallel to the array direction of the plurality of nozzles. The method of claim 9,
The nozzle is provided in plurality,
The at least one flow guide is a dishwasher to form a plurality of divided flow passages so that the water sprayed from the plurality of nozzles are partitioned flow. The method of claim 7, wherein
And a heat conduction member interposed between the first surface and the tub. 13. The method of claim 12,
At least one opening is formed in the first surface,
And the heat conductive member covers the one or more openings. A body including a water chamber in which water is stored and a water supply passage for supplying water to the water chamber;
And at least one nozzle for spraying water in a direction inclined toward one surface of the body in the water supply passage. 15. The method of claim 14,
The body has a first surface facing the tub,
A second surface opposite to the first surface,
Water sprayed from the nozzle is a water supply device of the dishwasher to flow inclined toward the first surface based on a vertical line. The method of claim 15,
The first surface of the dish washing machine is provided with a forming unit for increasing the contact area with the water sprayed from the nozzle. The method of claim 15,
Water supply apparatus of the dishwasher is formed on the first surface one or more flow guides for preventing the water sprayed from the nozzle to fall vertically.

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