KR101054436B1 - dish washer - Google Patents

Abstract

In the dishwasher according to the present invention, the washing water directly supplied from the sump to the washing tank is filtered by the first filter device, and the washing water supplied from the sump through the spray nozzle is filtered by the second filter device, whereby the washing water mixed with dirt By minimizing the phenomenon of recirculation, the phenomenon that the tableware is recontaminated by dirt is prevented, there is an effect that the washing performance can be improved. In addition, there is an advantage that the phenomenon that clogging the injection hole of the injection nozzle due to dirt can be prevented.

Dishwasher, Filter, Cyclone

Description

Dishwasher {Washing machine}

The present invention relates to a dishwasher, and more particularly, to be configured to filter both the washing water supplied to the washing tank in the sump and the washing water sprayed through the spray nozzle in the sump, to prevent the phenomenon that dirt is re-introduced into the washing tank. The present invention relates to a dishwasher capable of improving cleaning performance.

In general, a dishwasher is a device that cleans contaminants such as food waste on dishware or cooking utensils (hereinafter, referred to as 'dishware') using detergent and washing water.

The dishwasher includes a main body including a washing tank, a door for opening and closing the opening of the main body, a rack assembly disposed inside the washing tank for storing dishes, and a sump disposed under the washing tank for storing the washing water. And a washing pump for pumping the washing water stored in the sump, a washing motor for driving the washing pump, and injection nozzles for spraying the washing water pumped from the washing pump into the washing tank. In addition, the dishwasher includes a heater for heating the washing water.

In addition, the dishwasher directs a portion of the washing water pumped from the washing pump to the spray nozzle, and passes the filter device to filter out the dirt. The filter device includes a waste collection chamber configured to introduce a portion of the wash water pumped from the washing pump and collect the waste, and a filter disposed above the waste collection chamber.

The washing water pumped from the washing pump flows into the waste collection chamber and overflows through the filter located above the waste collection chamber. At this time, the dirt contained in the washing water is filtered.

However, the dishwasher according to the prior art, when the filter is clogged due to long use or excessive dirt, the washing water pumped from the washing pump does not pass through the filter, all the washing water flows into the washing tank through the spray nozzle As a result, dirt may be re-introduced into the washing tank, resulting in a problem that the tableware is recontaminated. For this reason, there is a problem that the washing performance is reduced.

The dishwasher according to the present invention has a purpose to provide a dishwasher capable of improving the cleaning performance by minimizing the re-introduction of dirt into the washing tank.

The dishwasher according to the present invention includes a washing tank for storing dishes, a spray nozzle disposed in the washing tank for spraying washing water, a sump disposed under the washing tank for temporarily storing the washing water from the washing tank, and the sump. A washing pump disposed at the pump and pumping the washing water, a first filter device disposed at the sump to filter the washing water flowing into the washing tank among the washing water pumped by the washing pump, and between the sump and the spray nozzle. And a second filter device disposed in the flow path and filtering the washing water supplied to the injection nozzle among the washing water pumped by the washing pump.

In the present invention, the first filter device includes a mesh filter mounted in the communication hole formed in communication with the washing tank in the sump.

In the present invention, the first filter device may further include a dirt collection chamber disposed under the mesh filter in the sump.

In the present invention, the second filter device includes a cyclone filter for separating the dirt by the centrifugal force generated by the swirl flow of the washing water pumped in the washing pump flows into the inside.

In the present invention, the second filter device is at least a portion of the cylindrical portion formed in a cylindrical shape, the inlet portion formed in the tangential direction of the cylindrical portion is introduced into the washing water pumped from the washing pump, and in the axial direction of the cylindrical portion And an outlet portion through which the washing water separated from the dirt is discharged in the cylinder portion, and a guide disposed in the cylinder portion toward the outlet portion to guide the washing water toward the outlet portion.

In the present invention, the guide may have a conical portion formed to reduce the cross-sectional area toward the outlet portion.

In the present invention, the cylindrical portion may be formed to protrude obliquely guide wall for guiding the washing water flowing into the inlet portion in one direction along the inner wall surface of the cylindrical portion.

In the dishwasher according to the present invention, the washing water directly supplied from the sump to the washing tank is filtered by the first filter device, and the washing water supplied from the sump through the spray nozzle is filtered by the second filter device, whereby the washing water mixed with dirt By minimizing the phenomenon of recirculation, the phenomenon that the tableware is recontaminated by dirt is prevented, there is an effect that the washing performance can be improved. In addition, there is an advantage that the phenomenon that clogging the injection hole of the injection nozzle due to dirt can be prevented.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a longitudinal cross-sectional view of a dish washer according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the sump shown in FIG.

Referring to FIG. 1, a dishwasher according to an embodiment of the present invention includes a main body 2 having an opening through which washing materials such as dishes (hereinafter, referred to as a “dishware”) are formed, and a door installed to open and close the opening. 6).

The inner surface of the door 6 is provided with a blower assembly (not shown) for blowing the humid air inside the outside when the dishes are dried. In addition, any one of the main body 2 and the door 6 is provided with a detergent supply device (not shown) for temporarily storing the detergent and supplying it into the washing tank 4.

The main body 2 includes a washing tank 4 forming a space for washing the dishes, a rack assembly disposed inside the washing tank 4 to accommodate the dishes, and a bottom surface of the washing tank 4. And a sump 40 in which washing water is collected, and spray nozzles 8, 9 and 10 for spraying the washing water of the sump 40 into the washing tank 4.

The rack assembly is installed to be withdrawn from the washing tank (4). The rack assembly may be provided with a plurality, wherein the upper rack 20 and the lower rack 30 is composed of.

The spray nozzles 8, 9 and 10 are disposed above the sump 40 and are supplied from the lower nozzle 8 for spraying the washing water to the lower portion of the washing tank 4, and from the sump (not shown). The upper nozzle 9 for spraying the washing water to the upper portion of the washing tank 4, and the top nozzle 10 for spraying the washing water downward from the upper side of the washing tank (4).

The sump 40 is connected to the water guide 11 for guiding the washing water to the upper side of the washing tank (4). The upper nozzle 9 and the top nozzle 10 are connected to the water guide 11 to receive the washing water from the sump 40.

The sump 40 is formed to have an upper surface open, and the sump cover 41 is coupled to cover the opened upper surface.

Referring to FIG. 2, the sump 40 is provided with a wash water storage unit 40a in which wash water is temporarily stored.

A heater 42 is installed between the sump 40 and the sump cover 41 to heat the wash water temporarily stored in the sump 40.

In addition, the sump 40 is equipped with a washing pump 50 for pumping the washing water in the sump 40. The washing pump 50 includes an impeller 51 and an impeller housing 52 in which the impeller 51 is accommodated. The washing pump 50 is connected to the washing motor 54 and the rotating shaft 53 provided below the sump 40.

In addition, the lower part of the impeller housing 52 is rotated by the rotational force of the washing motor 54, the disposer 55 to crush the food waste, etc. is coupled. On the upper side of the disposer 55, a screen 56 having a predetermined mesh may be disposed to filter relatively large food waste.

In addition, a drain chamber 40b is formed in the sump 40 so as to be partitioned from the wash water storage 40a. The drain chamber 40b is provided with a drain pump 60 for pumping the washing water contained in the drain chamber 40b to drain the water to the outside. The drain pump 60 is composed of a drain motor 61 and an impeller 62.

On the other hand, the sump 40 has a sampling flow path (not shown) for guiding a part of the temporarily stored washing water to be directly supplied to the washing tank 4, and the rest of the washing water is the upper nozzle 9 and the lower nozzle 8. The main flow path 66 for guiding the supply to the side is formed. That is, the sampling flow path (not shown) is formed to connect the wash water storage unit 40a to be described later and the first filter device 70 to be described later, and the main flow path 66 is connected to the wash water storage unit 40a. It may be formed to connect the second filter device 80 to be described later.

A flow path control device 63 is installed outside the wash water storage unit 40a, and a flow path control valve 65 is axially coupled to the flow path control device 64. At least one of the main flow path 66 and the sampling flow path may be selected according to opening and closing of the flow path control valve 65.

The sump 40 includes a first filter device 70 for filtering the washing water directly supplied to the washing tank 4 among the washing water pumped by the washing pump 50, and pumped by the washing pump 50. A second filter device 80 for filtering the washing water supplied to the spray nozzles 8, 9 and 10 in the washing water is disposed.

The first filter device 70 includes a waste collection chamber 71 disposed above the impeller housing 52, a first filter housing 72 mounted on the sump cover 41, and the first filter. It is mounted to the housing 72 includes a mesh filter 73 for filtering the wash water. The first filter housing 72 is coupled to the upper side of the sump cover 41.

 The mesh filter 73 is installed in a hole formed in communication with the washing tank 4 in the first filter housing 72, and a mesh hole is formed. The mesh filter 73 is disposed such that the washing water flowing into the dirt collection chamber 71 overflows through the mesh filter 73 and circulated to the washing tank 4. Accordingly, the first filter device 70 is a device for continuously filtering the washing water introduced into the sampling flow path among the washing water of the washing water storage unit 40a.

A drain pipe 74 is formed below the waste collection chamber 71 to open / close a valve so that the washing water and the wastes of the waste collection chamber 71 can be discharged to the drain chamber 40b during a drain stroke. Can be installed.

On the other hand, the sump cover 41 has a communication hole 41a is formed in communication with the sump 40, the washing water in the washing tank 4 is recovered to the sump 40 through the communication hole (41a). . That is, the washing water in the sump 40 overflows through the mesh filter 73 and flows into the washing tank 4, and the washing water in the washing tank 4 passes through the communication holes 41a. ) Is recovered. Therefore, while the washing water in the washing tank 4 circulates through the mesh filter 73 and the communication holes 41a, dirt is filtered out.

3 is a perspective view of the second filter device shown in FIG. 2, and FIG. 4 is a side view of the second filter device shown in FIG. 3.

2 and 3, the second filter device 80 is a cyclone filter 80 that separates dirt by centrifugal force generated by the swirl flow of the washing water introduced into the pump by the washing pump 50. to be.

The cyclone filter 80 has a cylindrical portion 81 forming a space for filtering the washing water, an inlet portion 82 through which the washing water pumped by the washing pump 50 is introduced, and the cylindrical portion 81. An outlet portion 83 through which the wash water separated from the dirt flows out, and is disposed toward the outlet portion 83 in the cylindrical portion 81, and a guide 84 for guiding the washing water toward the outlet portion 83. It includes.

The cylindrical portion 81 may be formed in a cylindrical shape so that the washing water pumped from the washing pump 50 forms a swirl flow. By the centrifugal force inside the cylindrical portion 81, dirt collects on the inner wall surface of the cylindrical portion 81.

The inlet portion 82 may be formed in a tangential direction on the outer surface of the cylindrical portion 81. The inlet 82 is connected to the wash water storage 40a and a portion of the wash water in the wash water storage 40a flows in.

The outlet portion 83 may be formed in the axial direction of the cylindrical portion 81. The outlet portion 83 is formed at an upper center portion of the cylindrical portion 81 and is connected to the main flow passage 66. The washing water filtered in the cylindrical portion 81 is supplied to the spray nozzles 8, 9, 10. On the other hand, the outlet portion 83 may be formed in the lower center of the cylindrical portion 81 of course.

The guide 84 may be disposed at the inner center of the cylindrical portion 81 and may be formed to reduce the cross-sectional area toward the outlet portion 83. That is, at least a portion of the guide 84 may have a cone shape. Here, the lower portion of the guide 84 is formed in a cylindrical shape, and the upper portion is formed in a cone shape, for example. The upper end of the guide 84 is formed to be spaced apart from the upper surface of the cylindrical portion 81 by a predetermined interval. The conical portion of the guide 84 causes the wash water to exit to the outlet portion 83.

In addition, the cylindrical portion 81 may be formed with a guide wall 85 for guiding the direction in which the washing water flowing into the inlet portion 82 flows. The guide wall 85 may guide the washing water flowing into the inlet 82 to flow in one direction along the inner wall surface of the cylindrical portion 81. The guide wall 85 is formed at the inlet portion 82 side in the cylindrical portion 81. The guide wall 85 may be formed in the same direction as the inlet portion 82, and the inlet portion 82 may be formed at an angle smaller than the inclined angle.

On the other hand, the dirt accumulated on the inner wall surface of the cylindrical portion 81 may be discharged through the inlet portion 82 by the drainage pressure of the drain pump 60 when the drain pump 60 is operated, It is of course also possible to form a separate drain pipe connected to the drain chamber 40b.

Referring to the operation of the dishwasher according to the embodiment of the present invention configured as described above, as follows.

The dishwasher washes the dishes while performing preliminary washing, main washing, rinsing, heating rinsing and drying stroke sequentially or selectively. Hereinafter, the preliminary washing stroke, the main washing stroke and the drainage stroke will be described.

In the preliminary washing or main washing stroke of the dish washing machine, the washing pump 50 is operated. In addition, while the flow path control device 64 operates, the flow path control valve 65 selects at least one of the plurality of flow paths. According to the operation of the flow path control valve 65, the washing water in the sump 40 may be supplied to at least one of the upper nozzle 9, the lower nozzle 8, and the top nozzle 10.

That is, the washing water in the sump 40 is pumped by the washing pump 50, and some of the pumped washing water is introduced into the waste collection chamber 71 of the first filter device 70 through the sampling flow path. The remainder flows into the cylindrical portion 81 of the second filter device 80.

The washing water supplied to the waste collection chamber 71 is introduced into the washing tank 4 while overflowing through the mesh filter 73 located above the waste collection chamber 71. At this time, the washing water is filtered through the mesh filter (73).

The washing water introduced into the cylindrical portion 81 is tangentially supplied into the cylindrical portion 81 through the inlet portion 82 and pivots along the inner wall surface of the cylindrical portion 81. At this time, since the dirt contained in the washing water is concentrated on the inner wall surface of the cylindrical portion 81 by centrifugal force, the dirt is separated from the washing water. Then, the wash water separated from the dirt is collected to the upper side of the cylindrical portion 81 along the guide 84, and exits through the outlet portion (83). The washing water separated from the dirt passes through the outlet portion 83 and is supplied to the spray nozzles 8, 9, 10, and sprayed to wash the dishes in the washing tank 4.

Therefore, since the washing water filtered by the cyclone filter 80 is sprayed through the spray nozzles 8, 9 and 10, the phenomenon that the tableware is contaminated by dirt can be minimized. Clogging of the injection holes of the injection nozzles 8, 9, 10 may also be minimized.

In addition, since the washing water circulated from the sump 40 directly to the washing tank 4 is also filtered, the washing water supplied to the spray nozzles 8, 9 and 10 is also filtered. This can be done.

On the other hand, the wash water supplied to the washing tank (4) falls again on the sump cover 41, the wash water dropped to the sump cover 41 is sump again through the communication hole (41a) formed in the sump cover (41) Flows into (40).

On the other hand, after the washing stroke as described above is finished, the drain stroke is started. When the drain stroke is started, the drain pump 60 is operated so that the washing water and the dirt in the sump 40 flow into the drain chamber 40b by the suction force of the drain pump 60. At the same time, the washing water and dirt in the cylindrical portion 81 of the cyclone filter 80 as well as the washing water and dirt in the waste collection chamber 71 flows into the drain chamber 40b and then through the drain hose. It can be drained to the outside.

1 is a longitudinal sectional view of a dish washer according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the sump shown in FIG. 1.

3 is a perspective view of the second filter device illustrated in FIG. 2.

4 is a side view of the second filter device shown in FIG. 3.

BRIEF DESCRIPTION OF THE DRAWINGS Fig.

2: body 4: washing tank

40: sump 41: sump cover

50: washing pump 60: drainage pump

70: first filter device 71: dust collection chamber

72: filter housing 73: mesh filter

80: second filter device 81: cylindrical portion

82: inlet 83: outlet

84: guide 85: guide wall

Claims (7)

A washing tank for storing dishes; A spray nozzle disposed in the washing tank and spraying the washing water; A sump disposed under the washing tank to temporarily store the washing water from the washing tank; A washing pump disposed on the sump to pump washing water; A first filter device disposed on the sump to filter the washing water flowing into the washing tank among the washing water pumped by the washing pump; A second filter device disposed in a flow path between the sump and the injection nozzle to filter the washing water supplied to the injection nozzle among the washing water pumped by the washing pump, The second filter device is a dishwasher including a cyclone filter to separate the dirt by the centrifugal force generated by the swirl flow of the washing water pumped in the washing pump introduced into the. The method according to claim 1, The first filter device, And a mesh filter mounted in a communication hole formed in communication with the washing tank in the sump. The method according to claim 2, The first filter device, And a dirt collection chamber disposed below the mesh filter at the sump. delete The method according to claim 1, The second filter device, A cylindrical portion at least partially formed in a cylindrical shape; An inlet portion formed in a tangential direction of the cylindrical portion and into which washing water pumped from the washing pump is introduced; An outlet portion formed in the axial direction of the cylindrical portion, through which the washing water separated from the dirt flows out of the cylindrical portion; And a guide disposed from the cylindrical portion toward the outlet portion to guide washing water toward the outlet portion. The method according to claim 5, And the guide has a cone shaped to reduce the cross-sectional area towards the outlet. The method according to claim 5, And a guide wall protruding obliquely from the cylindrical part to guide the washing water flowing into the inlet to flow in one direction along the inner wall of the cylindrical part.

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