KR20140100072A - Dish washer - Google Patents

Abstract

The dishwasher according to the present invention comprises a cabinet for forming an outer appearance, a washing tank for washing dishes, a sump chamber for storing washing water, a washing tank for pouring washing water in the sump chamber, A drain pump assembly communicating with the inside of the chamber discharging unit through a drain channel, and a noise reduction unit provided on the drain channel so as to prevent the generation of bubbles in washing water passing through the drain channel. This configuration can reduce or eliminate bubbles in the wash water to reduce noise due to the two-phase flow.

Description

DISHWASHER {DISH WASHER}

The present invention relates to a dishwasher, and more particularly, to a dishwasher for reducing noise in a sump of a dishwasher.

In general, the dishwasher includes a main body having a washing tub, a dish basket provided inside the washing tub, a spray nozzle for spraying washing water to the dish basket, and a sump unit connected to the spray nozzle for supplying wash water to the spray nozzle.

The sump unit includes a sump housing for forming an outer appearance, a sump chamber for storing wash water, a housing cover for covering the sump housing, a circulation pump for circulating the wash water to the spray nozzle, And a drain pump for discharging the water.

When the wash water flows from the sump chamber to the drain pump, the wash water is mixed with water and air bubbles, and noise is generated in the fluid. Also, even when the water is discharged to the outside by the drain pump, a larger noise is generated than when discharging only the washing water.

One aspect of the present invention provides a dishwasher capable of reducing noise and improving drainage efficiency.

The dishwasher according to an aspect of the present invention includes a cabinet forming an outer appearance; A washing tub provided in the cabinet for washing the tableware; A sump chamber provided below the washing tank and storing washing water; A drain pump assembly communicating with the inside of the chamber discharge unit provided at one side of the sump chamber through a drainage channel so as to pump and drain wash water in the sump chamber; And a noise reduction unit provided on the drainage flow path to prevent the generation of bubbles of washing water passing through the drainage passage.

The noise reduction unit may include a noise reduction plate formed in a shape of a mesh plate to intercept the drainage passage.

The mesh shape of the noise reduction plate may be formed to be densely formed so as to crush the bubbles of the flowing water while passing the water flowing from the sump chamber.

The noise reduction plate may have the same shape as the cross section of the drainage passage so as to intercept the drainage passage.

The noise reduction plate may further include a noise reduction plate rotation shaft at an outer end of the noise reduction plate so as to rotate on the drainage passage.

Wherein the noise reduction unit is connected to one side of the noise reduction plate so that the noise reduction plate selectively blocks the drainage passage according to ON / OFF, and is disposed outside the drainage passage and controls rotation of the noise reduction plate And a control unit.

Wherein the chamber discharging portion includes a rod-shaped rotation control unit coupling rod on the outer surface for fixing the rotation control unit, and the rotation control unit is formed in a hole shape at a corresponding position for engagement with the end of the rotation control unit coupling rod And a coupling hole provided therein.

And the bottom of the sump chamber may be inclined toward the drainage passage.

The inclination of the bottom of the sump chamber may be 10 degrees with respect to the bottom surface of the cabinet.

The apparatus may further include an air flow hole provided above the chamber discharging unit so that air can be discharged to the outside.

The dishwasher of the present invention is provided with a noise reduction unit to reduce noise during drainage and improve drainage efficiency.

In addition, by reducing the number of residues in the sump chamber, it is possible to remove the odor due to the residual water.

1 is a sectional view showing a dishwasher according to an embodiment of the present invention;
2 is a perspective view showing a sump of a dishwasher according to an embodiment of the present invention;
3 is a cross-sectional perspective view illustrating a noise reduction unit of a dishwasher according to an embodiment of the present invention.
4 and 5 are views showing the operation of the noise reduction unit of the dishwasher according to the embodiment of the present invention.
6 is a view showing a sump chamber of a dishwasher according to an embodiment of the present invention;

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view illustrating a dishwasher according to an embodiment of the present invention. 1, a dishwasher according to an embodiment of the present invention includes a main body 10 having an inlet 10a formed on a front surface thereof for introducing and discharging a dishware therein, And a door 12 which is rotatably installed at a lower portion of the main body 10 and opens and closes the charging port 10a.

A rack 13 for containing the tableware and a nozzle 14 for spraying water toward the tableware placed in the washing chamber 11a in a state of being contained in the rack 13 are disposed in the washing chamber 11a. Each of the racks 13 is provided with two racks arranged vertically movably in the washing chamber 11a so as to be retracted and retracted to enter or advance into the washing chamber 11a and to be drawn out from the washing chamber 11a. Three nozzles 14 are provided so as to be rotatable on the lower side of the two racks 13 and on the upper side of the racks 13 arranged above and spray water by the tableware contained in the racks 13.

A water supply pipe 16 for guiding water from an external water supply source (not shown) to the washing chamber 11a is connected to the rear side of the washing tub 11, and a water supply valve (not shown) for selectively opening and closing the water supply pipe 16 is connected to the water supply pipe 16 17 are disposed.

A sump 30 having a circulation pump 18, a drainage pump 19 and the like is provided at the bottom of the washing tub 11 so as to collect washing water and to recirculate or discharge the washing water.

FIG. 2 is a perspective view showing a sump of a dishwasher according to an embodiment of the present invention, FIG. 3 is a sectional perspective view showing a noise reduction unit of a dishwasher according to an embodiment of the present invention, FIG. 6 is a view showing a sump chamber of a dishwasher according to an embodiment of the present invention. FIG. 6 is a view illustrating the operation of a noise reduction unit of a dishwasher according to an embodiment of the present invention.

The sump 30 is provided with a sump chamber 34 for collecting the water supplied into the washing chamber 11a through the water supply pipe 16 or the water sprayed from the nozzle 14 in the lower portion of the washing tub 11. A drain pump 19 for discharging the water collected in the sump chamber 34 to the outside and a circulation pump for circulating the water collected in the collecting part 15 to the nozzle 14 18 are installed. A drain pipe 21 for guiding water from the drain pump 19 to the outside is connected to the drain pump 19 and a circulation pipe 20 for guiding water to the nozzle 14 is connected to the circulation pump 18.

The sump 30 includes a circulation pump 18 for pumping water stored in the sump 30, a sump chamber 34 formed in a cylindrical shape for storing washing water used for washing the tableware, a drain pump assembly 40). The sump 30 is provided with a heater (not shown) for heating the washing water, and a sump chamber 34 is provided with a drain filter (not shown) for filtering washing water.

A heater (not shown) for heating the wash water stored in the sump 30 is detachably installed inside the sump 30. The washing water heated by the heater (not shown) is transferred to the nozzle through the circulation pipe connected to the sump 30. [

The sump chamber 34 is formed in a cylindrical shape in the sump 30, and a drainage filter 22 for filtering the foreign substances from the washing water used for washing dishes is installed in the sump 30. [ The sump chamber 34 is spaced a predetermined distance from the inner bottom surface of the cabinet so that the outer bottom surface of the sump chamber 34 does not contact the inner bottom surface of the cabinet.

The washing water filtered through the drain filter 22 is re-supplied by the circulating pump 18 before the drain pump 19 is operated and used for washing the dishes. When the drain pump 19 is operated, Drainage.

The sump chamber (34) is provided with a chamber discharge portion (36) communicating with a drain pump assembly (40) at a lower side. The chamber discharging part 36 has a cylindrical tube shape, and a drainage passage 36a is formed therein so that washing water can flow therein. One end thereof communicates with the sump chamber 34 and the other end communicates with the drainage pump.

Since the sump chamber 34 is a space in which the washing water collects, it is preferable that the chamber discharging portion 36 is disposed on the lower side of the sump chamber 34 for draining the washing water. Further, the sump chamber bottom portion 34a is inclined toward the chamber discharging portion 36. [ This is to reduce the amount of water remaining in the wash water. The amount of the washing water remaining in the sump chamber 34 can be reduced by providing the bottom of the sump chamber 34 on the other side of the chamber discharging portion 36 higher than the bottom of the chamber discharging portion 36 side, So that the inflow of the washing water into the discharging portion 36 can be facilitated. The inclination is not limited, but it is preferable to be inclined by about 10 degrees in consideration of the capacity of the sump chamber 34 and the drain filter (not shown).

The drainage pump assembly 40 is constituted by a drain pump (not shown) and an impeller 42 for pumping washing water, and a drain motor (not shown) for driving them. The impeller 42 side of the drainage pump assembly 40 communicates with the chamber discharge portion 36 formed in the sump chamber 34.

A two-phase flow due to the movement of water and air is generated on the drainage flow path 36a due to the bubbles contained in the washing water, thereby causing noise.

An air flow hole 38 is provided at the upper end of the impeller 42, that is, at the upper end of the chamber discharge portion 36 and the drain pump assembly 40 in contact therewith so that the air contained in the washing water can be discharged to the outside. Since the air is discharged to the outside through the air, the impeller (42) can transmit the discharge force to the drain pipe only to the wash water, and furthermore, the air and the wash water can be separated to improve the generation of the two-phase flow noise.

The noise reduction unit 50 is provided on the drainage passage 36a of the chamber discharge portion 36 as a structure for removing the noise. The position of the noise reduction unit 50 is not limited to this. However, since the noise is generated in the section where the washing water in the sump chamber 34 enters the drain pump, it is preferable that the drainage passage 36a of the chamber discharge unit 36, .

The noise reduction unit 50 includes a noise reduction plate 60 provided on the drainage flow path 36a to block the flow of the washing water and a rotation control unit 70 for controlling the operation of the noise reduction plate 60.

The noise reduction plate 60 is provided on the drainage passage 36a so as to intercept the drainage passage 36a. The noise reduction plate 60 is provided in a net shape or a mesh shape so that even when the noise reduction plate 60 obstructs the drainage passage 36a, the washing water can pass through the noise reduction plate 60. However, 60, the size is reduced or eliminated.

Through this process, the amount of bubbles contained in the wash water can be reduced to reduce the two-phase flow due to the movement of water and air.

The material of the noise reduction plate 60 is not limited and it should be applied to the washing water passing through the drainage passage 36a so that the shape is preferably the same as the cross section of the drainage passage 36a. In this embodiment, since the drainage passage 36a has a circular section, the shape of the noise reduction plate 60 is also provided in a circular shape.

The degree of compactness of the mesh shape is not limited, but it is preferable that the shape of the mesh shape is densely formed so that washing water flowing from the sump chamber 34 can pass therethrough and the water bubbles can be crushed.

The washing of the tableware by the dishwasher is performed by repeating the watering, washing and draining process several times. After the preliminary cleaning is completed, the remaining detergent other than the detergent used in the preliminary cleaning is supplied, and the above-mentioned water supply, washing And main washing for repeating the drainage process at least once, and rinsing cleaning for repeating the above-mentioned water supply, washing and draining process at least once and for removing the detergent adhered to the tableware are sequentially performed for dishwashing.

In the case of the preliminary washing and the main washing, if the noise reduction plate 60 blocks the drainage flow path 36a, the noise reduction plate 60 can be applied because it is effective to prevent such two-phase flow noise. However, in this case, since the pollutants contained in the dishes are drained, the pollutants may be caught by the noise reduction plate 60, thereby hindering the operation.

Therefore, the noise reduction unit 50 preferably operates in the case of rinsing cleaning. In this way, the rotation control unit 70 is provided to control the use and non-use of the noise reduction unit 50 on and off.

The rotation control unit 70 rotates the noise reduction plate 60 to be turned on or off as required. At the outer edge of the noise reduction plate 60, a shaft-like noise reduction plate rotation shaft 62 is provided so as to pass the rotation center of the noise reduction plate 60. The rotation control unit 70 is disposed on the side of the chamber discharge portion 36 and connected to the noise reduction plate rotation shaft 62 to control the noise reduction plate 60. Specifically, the noise reduction plate rotary shaft 62 is engaged with the rotation control shaft 72 of the rotation control unit 70 to control the rotation.

The state where the noise reduction plate 60 is allowed to pass the washing water flowing through the drainage passage 36a is referred to as a first state A and a state in which the noise reduction plate 60 is disposed in the direction of the washing water flowing on the drainage passage 36a 2 state (B), the rotation control unit 70 repeats the first state (A) and the second state (B).

The rotation control unit 70 includes a geared motor (not shown) for control. A geared motor (not shown) is a combination of an electric motor and a reduction gear device, and various gear ratios can be applied to the rotary shaft of the motor.

The rotation control unit 70 is disposed on the side surface of the chamber discharge portion 36 and is disposed by being coupled with the rotation control unit coupling rod 64 provided on the outer peripheral surface of the chamber discharge portion 36. More specifically, on the outer circumferential surface of the chamber discharge portion 36, a bar-shaped rotation control unit coupling rod 64 is provided above and below the chamber discharge portion 36 in a direction perpendicular to the longitudinal direction of the chamber discharge portion 36, At the end of the unit connecting rod 64, a coupling protrusion 64a is provided. A fixing flange 74 having a coupling hole 74a corresponding to the coupling projection 64a is provided on the outer surface of the rotation control unit 70 at a position corresponding thereto.

The rotation control unit coupling rods 64 may be provided in a single number. However, in order to firmly support the rotation control unit 70, it is preferable that the rotation control unit coupling rods 64 are provided vertically in the tangential direction with respect to the end surface of the chamber discharge portion 36. The rotation control unit 70 is coupled to the chamber discharge portion 36 through the engagement of the rotation control unit coupling rod 64 and the fixing flange 74 of the rotation control unit 70.

The operation of the dishwasher and the noise reduction unit according to the above configuration will be described below.

Washing the dishwasher When the dishwasher is placed in the rack, the water is introduced by the water supply pipe and the washing is started.

Washing is performed by repeating the process of water supply, washing and draining. After the preliminary washing and preliminary washing for washing the dishes are performed by supplying a part of detergent, the remaining detergent except some detergent used for the preliminary washing is supplied Washing and draining the raw water, washing and draining process at least once, repeating the above-mentioned watering, washing and draining process at least once, and rinsing washing for removing the detergent adhering to the tableware, .

At this time, even in the case of the preliminary washing and the main washing, the noise reduction unit 50 can operate, but operates in consideration of the degree of contamination, and operates mainly in the rinsing cleaning.

The washing water flowing through the sump chamber 34 flows into the drain pump assembly 40 through the chamber discharging portion 36. At this time, the noise of the noise reducing unit 50 provided in the chamber discharging portion 36 The reduction plate 60 is closed by the rotation control unit 70 in the first state (A), i.e., the ON state, and the drainage flow path 36a is blocked.

In this case, the bubbles contained in the washing water are reduced in size or extinguished while passing through the mesh-shaped plate of the noise reduction plate 60, and the two-phase flow noise due to the movement of water and air bubbles is reduced.

After this process is completed, the noise reduction plate is changed to the second state (B), that is, the off state, by the rotation control unit 70, and is shifted to a state of being laid out on the drainage channel 36a.

The foregoing has shown and described specific embodiments. However, it should be understood that the present invention is not limited to the above-described embodiment, and various changes and modifications may be made without departing from the technical idea of the present invention described in the following claims .

10: main body 11: washing tank
13: rack 16: water pipe
17: water supply valve 18: circulation pump
19: Drain pump
30: Sump 34: Sump chamber
36: chamber discharging portion 36a:
38: Air flow hole 40: Drain pump assembly
42: Impeller 50: Noise reduction unit
60: Noise reduction plate 62: Noise reduction plate Rotation axis
64: rotation control unit coupling rod 64a: coupling projection
70: rotation control unit 72: rotation control shaft
74: Fixing flange 74a: Coupling hole

Claims (10)

A cabinet forming an appearance;
A washing tub provided in the cabinet for washing the tableware;
A sump chamber provided below the washing tank and storing washing water;
A drain pump assembly communicating with the inside of the chamber discharge unit provided at one side of the sump chamber through a drainage channel so as to pump and drain wash water in the sump chamber;
And a noise reduction unit provided on the drainage flow path to prevent the generation of bubbles in washing water passing through the drainage passage. The method according to claim 1,
Wherein the noise reduction unit includes a noise reduction plate formed in a shape of a mesh-like plate so as to intercept the drainage passage. 3. The method of claim 2,
Wherein the mesh shape of the noise reduction plate is densely formed so that water flowing from the sump chamber passes through the sump chamber to crush air bubbles flowing in the siphon chamber. 3. The method of claim 2,
Wherein the noise reduction plate has the same shape as a cross section of the drainage passage so as to intercept the drainage passage. 3. The method of claim 2,
Wherein the noise reduction plate further includes a noise reduction plate rotation shaft at an outer end portion so as to be rotatable on the drainage passage. 3. The method of claim 2,
The noise reduction unit
And a rotation control unit connected to one side of the noise reduction plate so that the noise reduction plate selectively blocks the drainage passage according to ON / OFF, and is disposed outside the drainage passage to control rotation of the noise reduction plate Wherein the dishwasher is a dishwasher. The method according to claim 6,
Wherein the chamber discharging portion includes a bar-shaped rotation control unit engaging rod on the outer side for securing the rotation control unit,
Wherein the rotation control unit includes a coupling hole provided in a hole shape at a corresponding position for coupling with the end of the rotation control unit coupling rod. The method according to claim 1,
And a bottom portion of the sump chamber is inclined toward the drainage channel. The method according to claim 1,
Wherein a degree of inclination of a bottom of the sump chamber is 10 degrees with respect to a bottom surface of the cabinet. The method according to claim 1,
Further comprising: an air flow hole provided above the chamber discharging unit so that air can be discharged to the outside.

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