KR20140139250A - Dish washing machine - Google Patents

Abstract

Provided is a dish washer capable of reducing vibration noise of a housing by having a curvature part with a curvature in a housing of a tub forming a washing tank. The dish washer comprises: a main body forming an appearance; a tub which is provided in the main body and has a washing tank washing dishes therein; and an injection nozzle which is provided in the tub to inject the washing water to the dishes. The tub includes: a housing forming the washing tank; and a vibration damping member which is attached to the outside of the housing to reduce vibration of the housing caused by the washing water injected from the injection nozzle. The housing includes a curvature frame with a curvature which is convex outward to get higher toward the center thereof.

Description

Dishwasher {DISH WASHING MACHINE}

The present invention relates to a housing shape of a dishwasher.

In general, a dishwasher includes a main body forming an outer appearance, a tub provided inside the main body, a tub having a washing tub, a dish basket provided inside the washing tub, a spray nozzle for spraying washing water to the dish basket, To the injection nozzle.

The washing water sprayed from the spray nozzle is sprayed by the tableware housed in the dish basket to wash the dishware. Part of the washing water sprayed from the spray nozzle is sprayed directly onto the housing forming the washing tub, thereby hitting the wall surface of the housing.

Vibration is generated in the housing by the washing water striking the wall surface of the housing, thereby generating vibration noise.

In order to reduce vibration noise of the housing, a vibration damping material for reducing vibration is attached to the outside of the housing. To increase the rigidity of the housing, a plurality of beads are provided in the housing.

However, vibration generated by a low frequency of 1000 Hz or less is mainly reduced by a vibration damper rather than a plurality of beads provided in the housing. Therefore, in order to reduce vibration, the vibration damper must be made thick and the efficiency of vibration reduction is reduced do.

Therefore, it is necessary to deform the shape of the housing so that the vibration of the housing can be efficiently reduced while minimizing the thickness of the vibration damping material adhered to the outside of the housing.

One aspect of the present invention provides a dishwasher capable of reducing vibration noise of a housing by providing a curved portion having a curvature in a housing of a tub forming a washing tub.

A dishwasher according to an embodiment of the present invention includes a main body for forming an outer appearance, a tub provided inside the main body and having a washing tub for washing dishes, a spray nozzle provided inside the tub for spraying washing water with the utensils, Wherein the tub comprises a housing forming the washing tub, and a damping material adhered to the outside of the housing and reducing the vibration of the housing by the washing water sprayed from the spray nozzle, And a curvature frame having a curvature such that a height protruding toward the curvature frame is increased.

The curvature frame may be provided on left and right and rear sides of the housing, respectively.

The curvature frame may include a planar portion and a curvature portion having a curvature protruding outward from the planar portion towards the center and having an elliptical shape.

The curvature portion may be provided in a curved surface having a curvature in each of a transverse direction and a longitudinal direction, and may have a maximum height at which a central portion protrudes outwardly.

The center of the curvature portion may protrude from the flat portion to a height of 5 mm to 15 mm in the outward direction.

Wherein the curvature portion has a maximum length in the transverse direction greater than 0.85 times the transverse length of the planar portion and smaller than a transverse length of the planar portion, the maximum length in the longitudinal direction being greater than 0.85 times the length in the longitudinal direction of the planar portion May be smaller than the length of the planar portion in the longitudinal direction.

According to another aspect of the present invention, there is provided a dishwasher including a housing, a washing tank provided inside the housing for washing dishes, a spray nozzle provided inside the washing tank for spraying washing water with the tableware, And a curvature frame protruding convexly so as to have a curvature that increases in height toward the outer side toward the central portion is provided on the side surface and the rear surface.

And a vibration damping material for reducing vibrations of the housing by washing water sprayed from the injection nozzle is adhered to the outside of the housing. The curvature frame is provided with a flat portion and a curved portion protruding from the flat portion to have a curvature, And adhesion can be facilitated.

According to the embodiments of the present invention, the vibration noise of the housing can be reduced while the thickness of the vibration damping material adhered to the housing is reduced.

In addition, it is possible to facilitate the adhesion of the vibration damping material while effectively reducing the vibration noise of the housing, and to improve the injection flow of the washing water sprayed from the spray nozzle.

1 is a perspective view of a dishwasher according to an embodiment of the present invention;
2 is a side cross-sectional view of a dishwasher according to an embodiment of the present invention;
Figure 3 shows a housing comprising a curvature frame of a dishwasher according to an embodiment of the invention.
4 is a view showing a maximum height of a curvature portion according to an embodiment of the present invention.
5 is a view showing the lengths of the curvature portions in the lateral direction and the longitudinal direction 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 and 2, the dishwasher 1 includes a main body 10 including a door 11 that forms an outer appearance and is rotatably coupled to a front surface of the main body 10, A sump unit 70 provided at a lower portion of the washing tank 20 to pump the washing water accommodated in the washing tank 20 to receive the washing water and pumped by the sump unit 70; And a spray nozzle 50 for spraying the washing water into the washing tank 20.

The tub 100 includes a housing 110 forming a washing tub 20 and a vibration damping material 120 adhered to the outside of the housing 110 to reduce vibrations of the housing 110.

The tub 100 is provided with a spray nozzle 50 for spraying wash water to wash dishes stored in the washing tub 20 and is connected to the housing 100 by the blow of washing water sprayed from the spray nozzle 50 The vibration damping material 120 is adhered to the outside of the housing 110 in order to reduce the vibration of the housing 110.

The shape of the housing 110 is modified in addition to the vibration damping material 120 adhered to the outside of the housing 110 in order to reduce vibration of the housing 110.

A rack 30 is provided in the washing tank 20 so as to be capable of being drawn in and pulled out, and is slidably mounted on a side wall of the washing tank 20.

The rack 30 includes an upper rack 31 disposed on the upper side of the washing tank 20 and a lower rack 33 provided below the upper rack 31 on the lower side of the washing tank 20. The upper rack 31 And the lower rack 33 are provided with an upper tableware basket 41 and a lower tableware basket 43 which can house dishes such as dishes.

One side of the washing tank 20 is provided with a water supply port (not shown) for introducing washing water supplied from an external water supply source (not shown) into the washing tank 20.

The washing water supplied through the water supply port flows into the sump unit 70 provided at the lower portion of the washing tank 20 and the washing water introduced into the sump unit 70 is supplied to the spraying nozzle 50 by the circulation pump 80 .

The injection nozzle 50 is provided to rotate due to the injection pressure of the washing water to be sprayed and includes a first injection nozzle 51 disposed between the sump unit 70 and the lower rack 33, A second spray nozzle 53 disposed between the upper rack 31 and the lower rack 33 and a third spray nozzle 55 disposed on the upper side of the upper rack 31.

The spray nozzle 50 is connected to the sump unit 70 by a wash water supply pipe P to spray the wash water supplied from the sump unit 100 to the tableware basket 40.

The first injection nozzle 51 is rotatably connected to the upper central portion of the sump unit 70 so that a part of the washing water pumped in the sump unit 70 is sprayed toward the dish basket 40 adjacent to the first spray nozzle 51 do.

The second and third spray nozzles 51 and 53 spray the rest of the wash water pumped in the sump unit 70 to the side of the tableware basket 40 adjacent to the second and third spray nozzles 51 and 53.

The washing water is discharged into the rectangular area where the washing water of the spray nozzle 50 can not reach in addition to the spray nozzle 50 including the first, second and third spray nozzles 51, 53 and 55, An auxiliary spray nozzle 57 may be provided below the side surface of the washing tub 20. [

The spray nozzles 50 and the auxiliary spray nozzles 57 are provided so that the spray direction is directed toward the dish basket 40 so that the washing water sprayed from the spray nozzles 50 and the auxiliary spray nozzles 57 is discharged from the dishwasher 40 So that a strong cleaning force is exerted.

The second and third injection nozzles 53 and 55 and the auxiliary injection nozzle 57 are connected to the sump unit 70 through the extension flow path 60. The extension flow path 60 is connected to the auxiliary injection nozzle 57, A second elongated flow path 61 extending from the rear surface of the washing tub 20 and connecting the second and third jet nozzles 53 and 55 to the sump unit 70, 63).

The extended flow path 60 is connected to the sump unit 70 to guide the washing water flowing due to the strong pumping pressure of the sump unit 70 to the auxiliary spray nozzle 57 and the second and third spray nozzles 53 and 55 Supply.

The bottom surface of the washing tank 20 is equipped with a sump unit 70 which receives the washing water and supplies the supplied washing water to the spray nozzle 50 and the auxiliary spray nozzle 57.

The sump unit 70 includes a sump housing 71 forming an outer appearance and a circulation pump 80 for circulating the wash water to the injection nozzle 50 and the auxiliary spray nozzle 57, A guide member (not shown) for guiding the washing water, and a housing cover 73 formed with a dirt chamber (not shown) and covering the guide member and the sump housing 71.

The sump housing 71 has a circular shape. The sump housing 71 is recessed downward to accommodate various components, and a circulation pump 80 and a drain pump 90 are mounted on the bottom.

The circulation pump 80 includes a pump motor 81 fixed to the lower surface of the sump housing 71 and an impeller 85 rotatably mounted on the rotary shaft 83 of the pump motor 81, Between the pump motor 81 and the impeller 85, a crushing device 87 for crushing dirt can be further provided.

The pump motor 81 is installed on the lower surface of the sump housing 110 and the rotary shaft 83 of the pump motor 81 protrudes through the lower surface of the sump housing 71.

An inlet 73a is formed at the rim of the housing cover 73 so that the washing water in the washing tub 20 flows into the sump unit 70. [

A sealing member (not shown) may be provided on the lower surface of the sump housing 71 to surround the rotating shaft 83 to prevent the washing water from leaking to the pump motor 81 side.

The crushing device 87 is for crushing dirt such as side dish dregs that have flowed into the sump unit 70 into small pieces and includes a cutter 87a that rotates in engagement with the rotary shaft 83 of the pump motor 81, And a dust filter 87b provided at an upper portion of the cutter 87a to prevent a relatively large mass of dirt from entering the impeller 85. [

The sump housing 71 may be equipped with a heater H for heating the washing water to improve washing power of washing water in addition to the circulation pump 80. A drain pump 90 mounted on the lower side of the sump housing 71 is connected to a drain pipe (91) to discharge washing water and dirt in the sump unit (70) to the outside of the dishwasher.

1 and 3, a tub 100 is provided inside a main body 10 forming an outer appearance and includes a housing 110 forming a washing tub 20, And a vibration damping material 120 for reducing vibration of the housing 110 due to the washing water injected from the injection nozzle 50.

The washing water is sprayed toward the tableware to wash the tableware housed in the tableware basket 40 from the spraying nozzle 50 provided in the washing tank 20 inside the tub 100. The washing water sprayed through the spraying nozzle 50 A wall surface of the housing 110 forming the washing tub 20 is struck.

Vibration is generated in the housing 110 by the blow of the washing water, and vibration is generated mainly by low frequency of 1000 Hz or less, and vibration noise is generated.

A vibration damping material 120 is adhered to the outside of the housing 110 to reduce vibration noise generated in the housing 110 and the vibration damping material 120 is adhered to the upper surface and left and right and rear surfaces of the housing 110 .

Various types of rubber are used as the vibration damping material 120. Vibration of the housing 110 can be reduced by the damping characteristics of the vibration damping material 120, and vibration noise can be reduced.

In addition to bonding the vibration damping material to the housing 110 in order to reduce vibrations generated in the housing 110, particularly vibrations caused by low frequencies of 1000 Hz or less, it is also possible to reduce the vibration by deforming the shape of the housing 110 have.

The left and right side surfaces and the rear surface of the housing 110 may be constituted by a curvature frame 130.

The curvature frame 130 has a flat portion 131 provided to be flat and a curved portion 130 having a curvature so that a height protruding outward from the flat portion 131 toward the center portion of the flat portion 131 is increased, (133).

The curvature portion 133 is provided such that the maximum length in the longitudinal direction corresponds to the length in the transverse direction and the length in the longitudinal direction of the curvature frame 130 has an elliptical shape longer than the maximum length in the transverse direction.

The curvature portion 133 is provided so as to have a height that protrudes outward toward the center portion, and is provided with a curved surface having a curvature in each of the lateral direction and the longitudinal direction.

Therefore, the height protruding outward from both sides of the lateral direction toward the center portion increases, and the height protruding outward from both sides of the longitudinal direction toward the center portion becomes larger.

4, the center of the curvature portion 133 having the highest height of the curvature portion 133 is protruded so as to have a height h of 5 mm to 15 mm from the flat portion 131 in the outward direction do.

5, the curvature portion 133 is provided such that the maximum length a in the transverse direction has a length of 0.85 times or more of the transverse length A of the flat portion 131, 131 in the transverse direction.

The maximum length b of the curvature portion 133 in the longitudinal direction is set to be equal to or greater than 0.85 times the longitudinal length B of the planar portion 131 as in the maximum length a in the transverse direction, 131 in the vertical direction.

The rigidity of both side surfaces and the rear surface of the housing 110 is increased by arranging the curvature frame 130 having the curvature portion 133 on both sides and the rear surface of the housing 110 so that the washing water, The vibration of the housing 110 can be reduced when the wall surface of the housing 110 is hit by the curved portion 133 and the vibration of the housing 110 can be reduced by the curvature portion 133, 120 can be made thin.

In addition, since only the curved portion 133 is provided on the flat housing 110, the washing water sprayed from the spray nozzle 50 strikes the wall surface of the housing 110 and is not sprayed in various directions, The injection flow of the injection nozzle 50 can be improved and the vibration damping material 120 attached to the outside of the housing 110 can be easily adhered.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the scope of the invention. .

10: Body 11: Door
20: Washing tank
30: rack 31: upper rack
33: Lower rack
40: tableware basket 41: upper tableware basket
43: Lower tableware basket
50: injection nozzle 51: first injection nozzle
53: second injection nozzle 55: third injection nozzle
57: auxiliary spray nozzle
60: Extension channel 61: First extension channel
63: second extension channel
70: Sump unit 71: Siphon lowering unit
73: Housing cover 73a: Inlet port
80: circulation pump 81: pump motor
83: rotating shaft 85: impeller
87: Grinding device 87a:
87b: Dirt filter
90: Drain pump 91: Drain pipe
100: the tub
110: housing 120: vibration damper
130: curvature frame 131:
133: Curvature portion
P: Water supply pipe H: Heater
A: Length in the horizontal direction of the flat portion B: Length in the vertical direction of the flat portion
a: Maximum length in the transverse direction of the curvature portion b: Maximum length in the longitudinal direction of the curvature portion
h: Center height of the curvature portion

Claims (8)

A body forming an outer appearance;
A tub provided inside the main body and having a washing tub for washing dishes;
A spray nozzle provided inside the tub for spraying washing water with the dishware;
/ RTI >
The tub
A housing forming the washing tub;
And a vibration damping material adhered to the outside of the housing to reduce vibration of the housing by the washing water sprayed from the injection nozzle,
Wherein the housing includes a curvature frame having a curvature such that the height of the housing protrudes outward toward the central portion of the dishwasher. The method according to claim 1,
Wherein the curvature frame is provided on left, right, and rear sides of the housing, respectively. 3. The method of claim 2,
Wherein the curvature frame includes a flat portion and a curved portion having a curvature and an elliptical shape protruding outwardly toward the center from the flat portion. The method of claim 3,
Wherein the curvature portion is provided with a curved surface having a curvature in each of a transverse direction and a longitudinal direction, and the central portion has a maximum height protruding outward. 5. The method of claim 4,
And the center of the curvature portion protrudes from the flat surface portion to a height of 5 mm to 15 mm outwardly. 5. The method of claim 4,
Wherein the curvature portion has a maximum length in the transverse direction greater than 0.85 times the transverse length of the planar portion and smaller than a transverse length of the planar portion, the maximum length in the longitudinal direction being greater than 0.85 times the length in the longitudinal direction of the planar portion Wherein the length of the flat portion is smaller than the length of the flat portion in the longitudinal direction. housing;
A washing tub provided inside the housing for washing the dishware;
A spray nozzle provided inside the washing tub and spraying washing water to the dish;
/ RTI >
Wherein the left and right side surfaces and the rear surface of the housing are provided with a curved frame that protrudes convexly so as to have a curvature that increases in height toward the center toward the center. 8. The method of claim 7,
And a vibration damping material for reducing vibrations of the housing by washing water sprayed from the injection nozzle is adhered to the outside of the housing. The curvature frame is provided with a flat portion and a curved portion protruding from the flat portion to have a curvature, Wherein the adhesive is easily adhered to the dishwasher.

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