KR102627641B1 - Dish washer - Google Patents

Abstract

The present invention relates to a dishwasher disposed on the lower surface of a tub and including a washing power supplementation means for increasing washing power for washing objects stored in a lower rack, and a bottom bracket for fixing and supporting the same.

Description

Dishwasher {DISH WASHER}

The present invention relates to a dishwasher, and more specifically, to a dishwasher disposed on the lower surface of a tub and including a washing power supplement means for increasing the washing power for washing objects stored in a lower rack, and a bottom bracket for fixing and supporting the same. will be.

A dishwasher is a device that sprays washing water such as water to wash dishes and cooking utensils stored inside. At this time, the washing water used for washing may contain detergent.

A dishwasher includes a tub that forms a washing space, a storage portion that accommodates cleaning objects inside the tub, a spray arm that sprays washing water into the storage portion, and a sump that stores water and supplies wash water to the spray arm. It is common to be

By using such a dishwasher, the time and effort required to wash dishes such as dishes after a meal can be reduced, contributing to user convenience.

Typically, a dishwasher is configured to perform a washing cycle for washing the object to be washed, a rinse cycle for rinsing the object to be washed, and a drying cycle for drying the object for which washing and rinsing have been completed.

These washing processes, rinsing processes, and drying processes are all carried out inside the tub.

In particular, the tub, known as a washing tank in the art, forms a washing space inside, but the front is entirely open to facilitate removal of the cleaning object through the front, and the top, bottom, left and right sides, and rear, excluding the front, are generally blocked. It is manufactured to be in the same condition as it is.

Inside the washing space of the tub, a storage portion for storing washing objects may be provided. In general, the storage unit may include a plurality of racks, each of which can be individually withdrawn from the outside of the tub.

Among the multiple racks, the lower rack is placed at the bottom and is configured to store the largest number of cleaning objects.

At this time, the cleaning object stored in the lower rack is cleaned using an upper spray arm that sprays washing water from the upper side of the lower rack toward the lower rack, and a lower spray arm that sprays washing water from the lower side of the lower rack toward the lower rack. It can proceed.

The upper spray arm and the upper spray arm may be provided as rotary spray arms so that the washing water can be sprayed evenly toward the cleaning object.

However, generally, the washing space formed inside the tub is provided in the shape of a hexahedron, and correspondingly, the lower rack is provided to have an external shape of a hexahedron box.

Therefore, areas where the washing water sprayed through the upper and lower spray arms, which are provided in the form of rotary spray arms, cannot effectively reach occur locally in the lower rack.

In particular, it is known that, among the areas adjacent to the lower surface of the tub, a blind area is formed in the area near the edge formed between both sides and the back of the tub, where washing water cannot be sprayed effectively and the washing power is insufficient.

In this regard, Korean Patent Publication No. 10-2018-0025761 (Prior Document 001) describes a cleaning power including a fixed nozzle fixedly disposed on the bottom of the tub and a movable vane that changes the direction of the washing water sprayed from the fixed nozzle. A dishwasher is disclosed that can enhance the washing power of a rectangular area where washing power is insufficient by using a supplementary means.

However, the dishwasher disclosed in prior document 001 must be additionally provided with a movable vane and a vane driving part for the movable vane. In other words, since many additional parts, such as a drive motor, reduction mechanism, and guide rail, must be added to implement the sliding reciprocating movement of the movable vane, the internal structure of the tub becomes very complicated, and the manufacturing cost is bound to rise to a significant level. Problems arise.

In addition, the dishwasher disclosed in prior document 001 must secure a space inside the tub where the fixed nozzle, movable vane, and vane driving part are installed, and a space for the sliding reciprocating movement of the movable vane.

Therefore, the space utilization inside the tabu is bound to deteriorate significantly, and a problem arises that causes a substantial reduction in the washing space where the storage unit is placed.

Korean Patent Publication No. 10-2018-0025761

The present invention was devised to solve the problems of the prior art described above, and as a means of supplementing the cleaning power, a fixed reflector and a bottom bracket connecting the reflector to the tub are simply placed and fixed in the blind area to enhance the washing power in the blind area. The first purpose is to provide a dishwasher that can simplify the structure and minimize the increase in manufacturing costs.

In addition, the present invention is a dishwasher that maximizes the space utilization of the washing space inside the tub and prevents a substantial reduction in the washing space by placing a fixed reflector in an area that does not interfere with the lower rack and lower spray arm. The second purpose is to provide.

The objects of the present invention are not limited to the objects mentioned above, and other objects and advantages of the present invention that are not mentioned can be understood by the following description and will be more clearly understood by the examples of the present invention. Additionally, it will be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof indicated in the patent claims.

A dishwasher according to the present invention includes a tub having a washing space with an open front; and a lower rack disposed inside the tub to be removable from the washing space and on which a washing object is placed. a lower spray arm rotatably disposed between the lower surface of the tub and the lower rack and including at least one nozzle through which washing water for washing the washing object is sprayed; and at least one bottom bracket disposed on the bottom of the tub and fixed to a position outside the rotation range of the lower spray arm.

Additionally, the at least one bottom bracket may include a support portion disposed to be spaced upward from the lower surface of the tub; a fixing part disposed on a lower side of the support part and fastened to the lower surface of the tub; And it may include a connection part where one end is coupled to the support part and the other end is coupled to the fixing part.

Additionally, the support part, the fixing part, and the connecting part may be formed integrally by pressing a metal plate.

Additionally, the fixing part may be directly fastened to the lower surface of the tub without using a separate fastening member.

In addition, the dishwasher wherein the fixing part is fastened to the lower surface of the tub through welding.

Additionally, the fixing part may be provided with at least one positioning bead that protrudes toward the lower surface of the tub.

In addition, the fixing part may include: a first fixing part disposed in front of the support part; and a second fixing part disposed behind the support part, wherein the connection part includes: a first connection part disposed between the support part and the first fixing part; And it may include a second connection part disposed between the support part and the second fixing part.

In addition, the at least one bottom bracket has one end formed in the first connection part and the other end extending to the support part, and includes a first locking hole in the shape of a square hole; And one end is formed in the second connection part and the other end extends to the support part, and is provided with a second locking hole in the shape of a square hole, wherein the front-to-back length of the first locking hole is longer than the front-to-back length of the second locking hole. It can be long.

Additionally, the left-right width of one end of the first locking hole may be larger than the left-right width of the other end of the first locking hole.

In addition, it is disposed at a position outside the rotation range of the lower spray arm and further includes a reflector that reflects the washing water toward the washing object, and the reflector may be detachably coupled to the support part of the bottom bracket. .

Additionally, the reflector may be supported separately from the bottom of the tub while being spaced upward from the bottom of the tub.

Additionally, a coupling portion coupled to the support portion of the bottom bracket may be provided on the bottom of the reflector.

In addition, the coupling portion is formed integrally with the bottom of the reflector, and includes an insertion protrusion inserted into the first coupling hole and engaging the first coupling hole. and a hook that is integrally formed on the bottom of the reflector, is inserted into the second coupling hole, and is hooked to the second coupling hole.

In addition, the reflector includes: a first reflector extending in an L shape along the left edge and rear edge of the bottom of the tub; And it may include a second reflector extending in an L shape along the right edge and rear edge of the bottom of the tub.

Additionally, the first reflector may be separated from the left side and the rear of the tub, and the second reflector may be separated from the right side and the rear of the tub, respectively.

The dishwasher according to the present invention enhances the cleaning power in the square area by simply placing and fixing a fixed reflector as a means of supplementing the washing power and a bottom bracket connecting the reflector to the tub in the square area, thereby simplifying the structure and reducing the manufacturing cost. It has the effect of minimizing the increase.

In addition, the dishwasher according to the present invention maximizes the space utilization of the washing space inside the tub and prevents a substantial reduction in the washing space by arranging a fixed reflector in an area that does not interfere with the lower rack and lower spray arm. It has a possible effect.

In addition to the above-described effects, specific effects of the present invention are described below while explaining specific details for carrying out the invention.

1 is a front perspective view of a dishwasher according to an embodiment of the present invention.
Figure 2 is a schematic cross-sectional view of the dishwasher shown in Figure 1.
Figure 3 is a front perspective view showing the lower spray arm and reflector disposed on the bottom tub of a dishwasher according to an embodiment of the present invention.
Figure 4 is a plan view of Figure 3.
Figure 5 is a front perspective view and a partially enlarged view of the reflector shown in Figure 3.
FIG. 6 is a bottom view and a partially enlarged view of the first reflector shown in FIG. 5.
Figure 7 is a front perspective view showing the bottom bracket disposed on the bottom tub shown in Figure 3.
Figure 8 is a partially enlarged view of Figure 7.
Figure 9 is a front perspective view showing the reflector shown in Figure 3 fixed to the bottom bracket.
Figure 10 is a partially enlarged view showing the bottom of Figure 9.
FIG. 11 is a plan view of FIG. 3 and is a diagram for explaining the arrangement relationship between the lower spray arm and the reflector.
Figure 12 is a partially enlarged view of Figure 11.

The above-mentioned objects, features, and advantages will be described in detail later with reference to the attached drawings, so that those skilled in the art will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of known technologies related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. In the drawings, identical reference numerals are used to indicate identical or similar components.

Although first, second, etc. are used to describe various components, these components are of course not limited by these terms. These terms are only used to distinguish one component from another component, and unless specifically stated to the contrary, the first component may also be a second component.

Throughout the specification, unless otherwise stated, each element may be singular or plural.

Hereinafter, the “top (or bottom)” of a component or the arrangement of any component on the “top (or bottom)” of a component means that any component is placed in contact with the top (or bottom) of the component. Additionally, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

Additionally, when a component is described as being “connected,” “coupled,” or “connected” to another component, the components may be directly connected or connected to each other, but the other component is “interposed” between each component. It should be understood that “or, each component may be “connected,” “combined,” or “connected” through other components.

As used herein, singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, terms such as “consists of” or “comprises” should not be construed as necessarily including all of the various components or steps described in the specification, and some of the components or steps may include It may not be included, or it should be interpreted as including additional components or steps.

Additionally, as used herein, singular expressions include plural expressions, unless the context clearly dictates otherwise. In the present application, terms such as “consists of” or “comprises” should not be construed as necessarily including all of the various components or steps described in the specification, and some of the components or steps may include It may not be included, or it should be interpreted as including additional components or steps.

Throughout the specification, when referred to as “A and/or B”, this means A, B or A and B, unless specifically stated to the contrary, and when referred to as “C to D”, this means unless specifically stated to the contrary. Unless there is one, it means that it is C or higher and D or lower.

Hereinafter, the present invention will be described with reference to drawings showing the configuration of the dishwasher 1 according to an embodiment of the present invention.

[Overall structure of the dishwasher]

Hereinafter, the overall structure of a dishwasher according to an embodiment of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a front perspective view showing a dishwasher according to the present invention, and Figure 2 is a simplified cross-sectional view briefly showing the internal structure of the dishwasher according to the present invention.

As shown in Figures 1 and 2, the dishwasher 1 according to the present invention includes a case 10 forming the outer shape, and a washing space 21 installed inside the case 10 where the washing object is washed. forming a tub 20 whose front is open, a door 30 that opens and closes the open front of the tub 20, and located at the lower part of the tub 20 to supply and collect washing water for washing objects. A driving unit 40 for circulation and drainage, a storage unit 50 that is detachably provided in the internal washing space 21 of the tub 20 and where a cleaning object is placed, and is installed adjacent to the storage unit 50. and is provided with a spray unit 60 that sprays washing water for washing the object.

At this time, the object to be washed seated in the storage unit 50 may be, for example, dishes such as bowls, plates, spoons, and chopsticks, and other cooking utensils. Hereinafter, unless otherwise specified, objects to be washed will be referred to as dishes.

The tub 20 may be formed in a box shape with an entirely open front, and is known as a so-called tub.

A washing space 21 is formed inside the tub 20, and the open front can be opened and closed by the door 30.

The tub 20 may be formed through press processing of a metal plate that is resistant to high temperature and moisture, for example, a stainless steel plate.

In addition, on the inner surface of the tub 20, a plurality of brackets are disposed for the purpose of supporting and installing functional components such as the storage portion 50 and the spray portion 60, which will be described later, within the tub 20. It can be.

Meanwhile, the driving unit 40 includes a sump 41 that stores washing water, a sump cover 42 that separates the sump 41 from the tub 20, and a water supply unit that supplies washing water to the sump 41 from the outside. (43), a drain unit 44 for discharging the washing water of the sump 41 to the outside, a water pump 45 and a supply passage 46 for supplying the washing water of the sump 41 to the spray unit 60. It may be configured to include.

The sump cover 42 is disposed on the upper side of the sump 41 and may serve to distinguish the tub 20 and the sump 41. Additionally, the sump cover 42 may be provided with a plurality of recovery holes for recovering the washing water sprayed into the washing space 21 through the spray unit 60 to the sump 41.

That is, the washing water sprayed from the spray unit 60 towards the dishes falls to the bottom of the washing space 21 and can be recovered back to the sump 41 through the sump cover 42.

The water pump 45 is provided on the side or bottom of the sump 41 and serves to pressurize the washing water and supply it to the spray unit 60.

One end of the water pump 45 may be connected to the sump 41 and the other end may be connected to the supply passage 46. An impeller 451 and a motor 453 may be provided inside the water pump 45. When power is supplied to the motor 453, the impeller 451 rotates, and the washing water in the sump 41 is pressurized and can be supplied to the spray unit 60 through the supply passage 46.

Meanwhile, the supply passage 46 may serve to selectively supply the washing water supplied from the water pump 45 to the spray unit 60.

Exemplarily, the supply passage 46 includes a first supply passage 461 connected to the lower injection arm 61, a second supply passage 463 connected to the upper injection arm 62, and the top nozzle 63. This can be done, and the supply passage 46 may be provided with a supply passage switching valve 465 that selectively opens and closes the supply passages 461 and 463.

At this time, the supply passage switching valve 465 may be controlled to open each of the supply passages 461 and 463 sequentially or simultaneously.

Meanwhile, the spray unit 60 is provided to spray washing water on dishes stored in the storage unit 50, etc.

More specifically, the spray unit 60 is located at the bottom of the tub 20 and is located between the lower spray arm 61 that sprays washing water to the lower rack 51, and the lower rack 51 and the upper rack 52. An upper spray arm (62) is located and sprays wash water to the lower rack (51) and upper rack (52), and is located at the top of the tub (20) and sprays wash water to the top rack (53) or upper rack (52). It may include a top nozzle 63.

In particular, the lower spray arm 61 and the upper spray arm 62 are provided in the washing space 21 of the tub 20 and can spray washing water while rotating toward the dishes in the storage unit 50.

The lower spray arm 61 may be rotatably supported on the upper side of the sump cover 42 so that it can spray washing water while rotating toward the lower rack 51 from the bottom of the lower rack 51.

Additionally, the upper spray arm 62 may be rotatably supported by the spray arm holder 467 so that it can spray washing water while rotating between the lower rack 51 and the upper rack 52.

Meanwhile, in order to increase cleaning efficiency, the lower surface 25 of the tub 20 may be further provided with a reflector that diverts the washing water sprayed from the lower spray arm 61 to the upward direction (U-direction).

Since the detailed configuration of the injection unit 60 can be applied to a configuration already known in the art, description of the specific configuration of the injection unit 60 will be omitted below.

Meanwhile, the washing space 21 may be provided with a storage unit 50 for storing dishes.

The storage unit 50 is provided to be withdrawn from the inside of the tub 20 through the open front of the tub 20 .

For example, in FIG. 2, a lower rack 51 is located at the lower part of the tub 20 and can accommodate relatively large dishes, and an upper rack 51 is located on the upper side of the lower rack 51 and can accommodate medium-sized dishes. An embodiment is shown in which a storage unit including a rack 52 and a top rack 53 located at the top of the tub 20 and capable of storing small dishes, etc. is shown. The present invention is not limited to this, but will be described based on an embodiment of a dishwasher provided with three storage units 50 as shown.

These lower racks 51, upper racks 52, and top racks 53 may each be configured to pass through the open front of the tub 20 and be drawn out.

To this end, guide rails 54 may be provided on both walls forming the inner peripheral surface of the tub 20, and illustratively, the guide rail 54 may include an upper rail, a lower rail, and a top rail.

Wheels may be provided below the lower rack 51, upper rack 52, and top rack 53, respectively. The user can store dishes in the lower rack 51, upper rack 52, and top rack 53 by pulling them out through the front of the tub 20, or easily remove washed dishes from them. You can take it out.

The guide rail 54 is a fixed guide rail in the form of a simple rail for guiding the withdrawal and insertion of the injection unit 60, or guides the withdrawal and storage of the injection unit 60, and the withdrawal distance according to the withdrawal of the injection unit 60. It can be provided as a telescopic guide rail that increases.

Meanwhile, the door 30 has the purpose of opening and closing the open front of the tub 20 described above.

A hinge part (not shown) for opening and closing the door 30 is provided at the lower part of the normally open front, and the door 30 is opened using the hinge part as a rotation axis.

Here, a handle 31 for opening the door 30 and a control panel 32 for controlling the dishwasher 1 may be provided on the outer surface of the door 30.

As shown, the control panel 32 includes a display 33 that visually displays information about the current operating status of the dishwasher, a selection button through which the user's selection operation is input, and a selection button for turning the dishwasher on and off. A button unit 34 including a power button through which a user's operation is input may be provided.

Meanwhile, the inner surface of the door 30 forms one side of the tub 20 when the door 30 is closed, and at the same time, the lower rack 51 of the storage unit 50 can be supported when the door 30 is opened. Forms a seating surface.

To this end, when the door 30 is fully opened, it is preferable that the inner surface of the door 30 forms a horizontal surface in the same direction as the direction in which the guide rail 54 along which the lower rack 51 is guided extends.

Meanwhile, although not shown, a dry wind supply unit may be provided at the lower part of the tub 20 to generate and supply high-temperature dry wind to the inside of the tub 20. At least one of the right or left sides of the tub 20 may be provided with at least one dry wind supply hole through which high-temperature dry wind generated by the dry wind supply unit is introduced into the interior of the tub.

[Detailed composition of tub, reflector and bottom bracket]

Hereinafter, the detailed configuration of the above-described tub 20 and the reflector 29 as a means for supplementing cleaning power will be described with reference to FIGS. 3 and 4.

First, the tub 20 forming the washing space 21 of the dishwasher 1 may be composed of a plurality of parts. For example, the tub 20 may be composed of three parts. The present invention is not limited to this, but will be described based on an embodiment in which the tub 20 is composed of three parts.

When the tub 20 is composed of three parts, the tub 20 includes an upper tub (not shown) forming the upper surface, a bottom tub 20c forming the lower surface 25 of the tub 20, and A mid tub disposed between the upper tub and the bottom tub 20c and coupled to them may be included.

The upper tub forming the upper surface of the tub 20 may be formed through press processing of a metal plate, preferably a stainless steel plate, having certain heat resistance and corrosion resistance.

At this time, the edges of both sides and the rear edge of the upper tub coupled to the mid tub may be formed as curved surfaces with a predetermined curvature.

The bottom tub 20c, which forms the lower surface 25 of the tub 20, can be formed, like the upper tub, through press processing of a metal plate, preferably a stainless steel plate, having certain heat resistance and corrosion resistance.

At this time, the edges of both sides and the rear edge of the bottom tub 20c coupled to the mid tub may be formed as curved surfaces with a predetermined curvature.

In addition, a sump hole 252 may be formed in the center of the bottom tub 20c for mounting the sump 41 in which washing water is stored, and the lower surface 25 of the bottom tub 20c has a sump hole 252 as a whole. It may be formed as a convergence surface 251 having a downward gradient.

A sump 41 that stores washing water and a sump cover 42 that separates the sump 41 and the tub 20 may be disposed in the sump hole 252.

Meanwhile, a base in which a predetermined receiving space is formed may be coupled to the lower side of the bottom tub 20c.

Like the upper tub and bottom tub (20c), the mid tub that forms both sides (26, 27) and the rear (23) of the tub is press-processed from a metal plate, preferably a stainless steel plate, having a certain heat resistance and corrosion resistance. It can be formed through.

As shown, both side edges and rear edges of the upper tub may be combined with the upper edge of the mid tub.

Additionally, both side edges and rear edges of the bottom tub 20c may be combined with the bottom edge of the mid tub.

At this time, in order to prevent leakage of washing water and to firmly couple each other, the upper tub, mid tub, mid tub, and bottom tub 20c may be joined to each other by welding, for example, by seam welding.

Here, as known in the art, seam welding is a type of electric resistance welding that involves continuous spot welding with roller-shaped electrodes, and is a welding method mainly used for joints that require airtightness and watertightness.

To form the tub 20, it is divided into three parts: an upper tub, a mid tub, and a bottom tub 20c. However, when the seam welding method is used, the welding line is formed on the same plane. Therefore, the processing time required for welding may have the advantage of being reduced compared to other welding methods.

Meanwhile, as shown, the lower spray arm 61 may be rotatably disposed on the upper side of the sump 41.

The lower spray arm 61 is rotatably disposed directly below the lower rack 51 and serves to spray washing water toward the lower rack 51 while rotating.

The lower spray arm 61 may be rotatably supported on the sump 41, and pressurized washing water may be supplied to the lower spray arm 61 through the sump 41.

The upper surface of the lower spray arm 61 may be provided with a plurality of nozzles 611 for spraying washing water toward the lower rack 51.

Some of the plurality of nozzles 611 may be oriented to spray washing water upward toward the bottom of the lower rack 51.

At this time, some of the plurality of nozzles 611 may be oriented so as to spray washing water toward the reflecting surface of the reflector 29, which will be described later.

Meanwhile, as shown, the dishwasher 1 according to an embodiment of the present invention may further include a reflector 29 disposed in the rectangular area R2 to reflect washing water toward the washing object as a means of supplementing washing power. there is.

The reflector 29 is disposed outside the rotation range R1 of the lower spray arm 61 and serves to change the direction of the washing water toward the lower rack 51.

As shown in FIG. 5 , the reflector 29 may be formed to have a shape extending linearly along the edge of the bottom tub 20c corresponding to the rectangular region R2.

Illustratively, in consideration of convenience of manufacturing and assembly, the reflector 29 includes a first reflector 291 disposed on the left edge and rear edge of the bottom tub 20c, a right edge of the bottom tub 20c, and It may be provided by dividing it into a second reflector 292 disposed at the rear edge.

As shown, the first reflector 291 and the second reflector 292 have a shape symmetrical to a straight line parallel to the front-back direction (F-R direction) passing through the rotation center (C, Figure 11) of the lower spray arm 61. and can be placed in a symmetrical position.

Since the reflector 29 has the purpose of improving the cleaning power for the blind area (R2), it will be placed in a position outside the rotation range (R1) of the lower spray arm 61 relative to the horizontal direction, that is, in the blind area (R2). You can.

Additionally, in order to prevent interference with the lower spray arm 61, it may be placed at a lower position than the lower spray arm 61 based on the vertical direction.

The first reflector 291 and the second reflector 292 include first extension parts 2911 and 2921 extending in the front-back direction (F-R direction) along the left and right edges of the bottom tub 20c, respectively, and a bottom tub Second extension parts 2912 and 2922 extending in the left and right directions (Le-Ri direction) along the rear edge of (20c), and these first extension parts 2911 and 2921 and second extension parts 2912 and 2922. It may be configured to include switching units 2913 and 2923 that connect.

As shown, the first extension parts 2911 and 2921 and the second extension parts 2912 and 2922 may extend linearly, respectively, corresponding to the shapes of the left and right edges of the bottom tub 20c.

The upper surfaces of the first reflector 291 and the second reflector 292 are provided with reflective surfaces 2914 and 2924 that change the direction of washing water.

As shown in the enlarged view of FIG. 5, the reflective surfaces 2914 and 2924 exemplarily include flat portions 2914a and 2924a having a predetermined inclination gradient in the left and right directions (Le-Ri direction), and a flat portion It forms a continuous surface with respect to (2914a, 2924a) and may be provided with curved portions (2914b, 2924b) extending upwardly (U-direction) from the flat portions (2914a, 2924a).

The curved portions 2914b and 2924b may be formed to have a convex curvature in a direction away from the lower rack 51 to effectively reflect the washing water toward the lower rack 51.

In addition, as shown, the flat portions 2914a and 2924a and the curved portions 2914b and 2924b are smooth so that no angled corners are formed at the portion where the flat portions 2914a and 2924a are connected to the curved portions 2914b and 2924b. The curvature of the curved portions 2914b and 2924b that can be connected may be selected.

Meanwhile, the first reflector 291 and the second reflector 292 may be indirectly supported and fixed to the bottom tub 20c through a bottom bracket 281, which will be described later.

The bottom of the first reflector 291 and the second reflector 292 may be provided with coupling portions 2915 and 2925 to enable them to be detachably coupled to the bottom bracket 281.

This is explained based on the first reflector 291 as follows.

As shown in FIG. 6, the coupling portion 2915 of the first reflector 291 includes an insertion protrusion 2915a and a locking hook disposed at a predetermined distance from each other along the longitudinal direction of the first extension portion 2911. (2915b).

The insertion protrusion 2915a is inserted into the first locking hole 2816 of the bottom bracket 281, which will be described later, and is rigidly connected to the support portion 2811 of the bottom bracket 281.

The insertion protrusion 2915a may be provided in an L-shape on the bottom of the first extension portion 2911 so that it can be inserted into the first locking hole 2816 and rigidly connected to the support portion 2811 of the bottom bracket 281. . One end of the insertion protrusion 2915a, which is provided in the L-shape, may be a fixed end integrally fixed to the bottom of the first extension portion 2911, and the other end of the insertion protrusion 2915a may be a free end.

The latching hook 2915b is configured to be hooked to the second latching hole 2817 of the bottom bracket 281, which will be described later. Like the insertion protrusion 2915a, the catching hook 2915b may be formed integrally with the bottom of the first extension portion 2911.

Since the hook fastening configuration already known in the art can be applied to the configuration of the hanging hook 2915b, a detailed description of the configuration will be omitted.

Meanwhile, the coupling portion 2915 may further include a stopper protrusion 2915c that protrudes from the bottom of the first extension portion 2911 in the downward direction (D-direction).

As will be described later, the stopper protrusion 2915c serves to guide the sliding movement of the first reflector 291 when coupled to the bottom bracket 281, and at the same time, after the coupling is completed, the stopper protrusion 2915c moves in the left and right directions of the first reflector 291 after the coupling is completed. (Le-Ri direction) It can act as a stopper to limit movement.

To serve as a stopper and guide, the stopper protrusion 2915c may extend linearly along the longitudinal direction of the first extension portion 2911.

Meanwhile, Figure 6 shows an embodiment in which two coupling portions 2915 are formed in the first extension portion 2911 of the first reflector 291, but this is only an example, and the size of the first reflector 291 Depending on this, the number of coupling portions 2915 may be modified and applied differently.

Meanwhile, supporting ribs 2916 and 2926 that protrude toward the lower surface 25 of the bottom tub 20c may be integrally provided on the bottom of the second extension portion 2912 of the first reflector 291.

The supporting ribs 2916 and 2926, along with the bottom bracket 281, which will be described later, space the first reflector 291 from the lower surface 25 of the bottom tub 20c at a predetermined interval to form a lower surface of the bottom tub 20c ( 25) It plays a supporting role in a separated state.

The configuration of the coupling portion 2915 and the supporting rib 2916 has been described based on the first reflector 291 shown in FIG. 6, but the coupling portion 2915 and the supporting rib 2916 of the first reflector 291 The configuration regarding may be provided as a coupling portion 2925 and a supporting rib 2926 in almost the same way as the second reflector 292.

However, as described above, since the first reflector 291 and the second reflector 292 are formed to have symmetrical shapes, the shapes of the coupling portion 2915 and the supporting rib 2926 of the second reflector 292 are similar to those of the first reflector 292. It may have a shape symmetrical to the shape of the coupling portion 2915 and the supporting rib 2916 of the reflector 291.

Meanwhile, as described above, the dishwasher 1 according to an embodiment of the present invention may further include a plurality of bottom brackets 281 fixed to the lower surface 25 of the bottom tub 20c.

As shown in Figures 7 and 8, the bottom bracket 281 supports the above-described first reflector 291 and second reflector 292 by separating and spaced from the lower surface 25 of the bottom tub 20c. can play a role.

By way of example, the bottom bracket 281 is described as having the purpose of supporting and fixing the first reflector 291 and the second reflector 292, but the present invention is not limited thereto and other types of cleaning power supplementation means are provided. Of course, it can also be used when it is provided in place of the first reflector 291 and the second reflector 292.

7 and 8 show an embodiment in which a total of four bottom brackets 281 of the same size and standard are provided. These bottom brackets 281 may be interchangeable common products having the same shape and standard. Here, the meaning that it can be a common product with the same shape and standard can be interpreted to mean that although it is not physically the same, it can be applied interchangeably within the allowable tolerance range. Therefore, the design and manufacturing costs for designing and manufacturing the individual bottom bracket 281 can be reduced.

These bottom brackets 281 are placed on the lower surface 25 of the bottom tub 20c, and may preferably be placed at a predetermined distance from the left side 26 and the right side 27.

This is to arrange the first reflector 291 and the second reflector 292 to be spaced apart from the left side 26 and the right side 27 of the bottom tub 20c, as will be described later.

In addition, the individual bottom bracket 281, like the first reflector 291 and the second reflector 292, may be placed in a position outside the rotation range R1 of the lower injection arm 61, that is, in the blind area R2. You can.

As shown in FIG. 8, the individual bottom bracket 281 includes a support portion 2811 formed to be spaced apart from the lower surface 25 of the bottom tub 20c in the upward direction (U-direction), and a support portion 2811 of the support portion 2811. A first fixing part 2812 formed in the front, a second fixing part 2813 formed in the rear of the support part 2811, and a first connection part connecting the support part 2811 and the first fixing part 2812 ( 2814) and a second connection part 2815 connecting the support part 2811 and the second fixing part 2813.

The bottom bracket 281 can be manufactured through press processing of a metal plate with a predetermined thickness, and therefore includes a support part 2811, a first fixing part 2812, a second fixing part 2813, and a first connecting part 2814. ) and the second connection portion 2815 may be formed integrally through press processing.

The support portion 2811 makes direct surface contact with the bottom surfaces of the first extension portions 2911 and 2922 of the above-described first reflector 291 and the second reflector 292 and serves to support them in the direction of gravity.

In addition, the support portion 2811 is connected to the bottom tub 20c so that the first reflector 291 and the second reflector 292 can be supported by being spaced apart from the lower surface 25 of the bottom tub 20c in the upward direction (U-direction). ) can be fixed at a predetermined distance from the lower surface.

As shown, in order to effectively support the first reflector 291 and the second reflector 292, the support portion 2811 has a length in the front-to-back direction (F-R direction) longer than the width in the left-right direction (Le-Ri direction). can be formed

At this time, the width of the support portion 2811 in the left-right direction (Le-Ri direction) extends along the front-to-back direction (F-R direction) to maximize the contact area with the first reflector 291 and the second reflector 292. It can be maintained approximately constant while

Meanwhile, the first fixing part 2812 and the second fixing part 2813 correspond to parts that are in direct contact with the lower surface 25 of the bottom tub 20c and are fixed to the lower surface 25 of the bottom tub 20c. .

At this time, the first fixing part 2812 and the second fixing part 2813 are directly attached to the lower surface 25 of the bottom tub 20c in a non-passing manner without a separate fastening member, preferably using a spot welding method. It can be attached directly through

Therefore, since the first fixing part 2812 and the second fixing part 2813 can be attached without using a separate fastening member that penetrates the bottom tub 20c, manufacturing cost and manufacturing process can be simplified. In addition, since it is bonded in a non-porous manner, the possibility of leakage of washing water to the outside of the bottom tub 20c is significantly reduced.

Meanwhile, the first fixing part 2812 and the second fixing part 2813 include at least one positioning bead 2818 that protrudes downward (D-direction) toward the bottom tub 20c as shown. may be provided, respectively.

The positioning bead 2818 is used to maintain a provisional assembly state for the bottom bracket 281 before welding the first fixing part 2812 and the second fixing part 2813.

Although not shown, a positioning groove that engages with the positioning bead 2818 may be formed on the lower surface 25 of the bottom tub 20c, corresponding to the positioning bead 2818.

The first connection part 2814 and the second connection part 2815 serve to connect the first fixing part 2812 and the second fixing part 2813 to the support part 2811, respectively. In particular, the first connection part 2814 and the second connection part 2815 are positioned at a predetermined angle in the horizontal direction so that the support part 2811 can be spaced apart from the lower surface 25 of the bottom tub 20c in the upward direction (U-direction). It may be configured as an inclined plane or a vertical plane with an inclination angle.

Meanwhile, as described above, the bottom bracket 281 includes a first catching hole 2816 into which the insertion protrusions 2915a and 2925a of the above-described first reflector 291 and the second reflector 292 are coupled, and a catching hook. A second locking hole 2817 where (2915b, 2925b) is coupled may be provided.

As shown in FIG. 8, the first locking hole 2816 may be a square hole whose front end is formed in the first connection part 2814 and whose rear end extends to the support part 2811.

To allow the insertion protrusions 2915a and 2925a of the first reflector 291 and the second reflector 292 to easily enter, the width in the left and right directions of the front end of the first locking hole 2816 is equal to that of the insertion protrusions 2915a and 2925a. It can be formed to be larger than the width of the free end.

At this time, the width in the left-right direction (Le-Ri direction) of the rear end of the first locking hole 2816 may be smaller than the width in the left-right direction (Le-Ri direction) of the front end. Through this, the amount of movement in the left and right directions (Le-Ri direction) of the first reflector 291 and the second reflector 292 can be minimized after the sliding coupling of the insertion protrusions 2915a and 2925a is completed.

Meanwhile, the second catching hole 2817 may be a square hole whose front end is formed in the support part 2811 and whose rear end extends to the second connection part 2815.

To allow easy entry of the hooks 2915b and 2925b of the first reflector 291 and the second reflector 292, the width of the front end of the first hook 2816 in the left and right directions (Le-Ri direction) is equal to the width of the hook. It can be formed larger than the width of (2915b, 2925b).

Since the second locking hole 2817 simply corresponds to the part where the hooks 2915b and 2925b are hooked, as shown, at least the front-to-back direction (F-R direction) of the second locking hole 2817 in the support portion 2811 ) The length L2 may be formed to be smaller than the length L1 in the front-back direction (F-R direction) of the first locking hole 2816.

Through the above-described structure, the process of assembling the coupling portions 2915 and 2925 of the first reflector 291 and the second reflector 292 to the bottom bracket 281 is as follows.

The first reflector 291 and the second reflector 292 each or simultaneously attach the free ends of the insertion protrusions 2915a and 2925a constituting the coupling portions 2915 and 2925 to the first locking hole 2816 of the bottom bracket 281. ) to enter.

When the first reflector 291 or the second reflector 292 is slid backwards as a whole at the same time as the free end of the insertion protrusion (2915a, 2925a) enters, the insertion protrusion (2915a, 2925a) is connected to the first locking hole (2816). It moves rearward along the first locking hole 2816 inside.

When the fixed end side of the insertion protrusion (2915a, 2925a) approaches the rear end of the first locking hole (2816), the locking hook (2915b, 2925b) reaches the second locking hole (2817).

In this way, as soon as the hooks (2915b, 2925b) reach the second hooks (2817), the first reflector (291) or the second reflector (292) is pressed downward to remove the hooks (2915b, 2925b). 2 When inserted into the catching hole 2817, fastening of the hook is completed, and assembly of the first reflector 291 or the second reflector 292 can be completed.

As shown in FIGS. 9 and 10, when the assembly of the first reflector 291 and the second reflector 292 is completed, the insertion protrusions 2915a and 2925a constituting the coupling portions 2915 and 2925 and the locking hook By (2915b, 2925b), the movement of the first reflector 291 and the second reflector 292 in the vertical direction (U-direction) can be restricted.

In addition, the left-right (Le-Ri direction) clearance and Since the gap in the left and right direction (Le-Ri direction) occurring between the locking hooks (2915b, 2925b) and the second locking hole (2817) can be offset, the left and right directions of the first reflector (291) and the second reflector (292) A state in which movement (in the Le-Ri direction) can be restricted can be completed.

Through the above-described structure, when the assembly of the first reflector 291 and the second reflector 292 is completed, as shown in FIG. 11, the first reflector 291 and the second reflector 292 are lower spray arms ( It may be fixed in a position outside the rotation range (R1) of 61).

Therefore, the washing water that falls after washing the cleaning object and the washing water that is directly sprayed from the nozzle 611 of the lower spray arm 61 collides with the reflecting surfaces 2914 and 2924 of the first reflector 291 and the second reflector 292. After doing so, the direction of progress may be changed toward the lower rack 51.

The washing water may be redirected toward the washing object disposed in the rectangular region R2 by the reflecting surfaces 2914 and 2924 of the first reflector 291 and the second reflector 292. Accordingly, the cleaning effect for the cleaning objects arranged in the rectangular area R2 among the cleaning objects arranged on the lower rack 51 can be significantly improved.

Meanwhile, as described above, the first reflector 291 and the second reflector 292 are supported in a separated state by being spaced apart from the lower surface of the bottom tub 20c through the bottom bracket 281.

Through this, the phenomenon of food, etc. being caught or stuck between the first reflector 291 and the lower surface 25 of the bottom tub 20c and between the second reflector 292 and the lower surface 25 of the bottom tub 20c is prevented. It can be prevented.

For the same reason, as shown in FIGS. 11 and 12, the outer surface of the first reflector 291 and the bottom tub 20c and the outer surface of the second reflector 292 and the bottom tub 20c are spaced apart and separated. The status quo can be maintained.

In more detail, as shown, a first gap G1 may be formed between the first extension 2911 of the first reflector 291 and the left side 26 of the bottom tub 20c, and the first gap G1 may be formed A second gap G2 may be formed between the second extension 2912 of the reflector 291 and the rear surface 23 of the bottom tub 20c.

The first gap G1 and the second gap G2 may be maintained approximately constant while moving along the longitudinal direction of the first extension part 2911 and the longitudinal direction of the second extension part 2912.

The first clearance G1 and the second clearance G2 may be set differently depending on the passing flow rate.

For the same reason, the switching portion 2913 of the first reflector 291 may be maintained separated from the left side 26 and the right side 27 of the bottom tub 20c so that a gap is created.

Although not shown, like the first reflector, a first gap G1 may be formed between the first extension 2921 of the second reflector 292 and the right side 27 of the bottom tub 20c, and 2 A second gap (G2) may be formed between the second extension 2922 of the reflector 292 and the rear 23 of the bottom tub 20c, and the first gap (G1) and the second gap (G2) ) may be maintained approximately constant while proceeding along the longitudinal direction of the first extension part 2921 and the longitudinal direction of the second extension part 2922.

As described above, the present invention has been described with reference to the illustrative drawings, but the present invention is not limited to the embodiments and drawings disclosed herein, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that transformation can occur. In addition, although the operational effects according to the configuration of the present invention were not explicitly described and explained while explaining the embodiments of the present invention above, it is natural that the predictable effects due to the configuration should also be recognized.

1: Dishwasher 10: Case
20: Tub 30: Door
40: driving part 50: storage part
60: injection unit

Claims (20)

A tub having a washing space with an open front;
a lower rack disposed inside the tub to be removable from the washing space and on which a washing object is placed;
a lower spray arm rotatably disposed between the inner lower surface of the tub and the lower rack and including at least one nozzle through which washing water for washing the washing object is sprayed;
At least one bottom bracket disposed on the bottom of the tub; and
Cleaning force supplementation means coupled to the bottom bracket;
Including,
The at least one bottom bracket,
a support portion disposed to be spaced upward from the lower surface of the tub;
a fixing part disposed on a lower side of the support part and fastened to the lower surface of the tub; and
a connection portion whose one end is coupled to the support portion and the other end is coupled to the fixing portion;
Including,
The fixing part,
a first fixing part disposed in front of the support part; and
a second fixing part disposed behind the support part;
Including,
The connection part is,
a first connection part disposed between the support part and the first fixing part; and
a second connection part disposed between the support part and the second fixing part;
Includes,
The at least one bottom bracket,
a first locking hole having one end formed in the first connection part and the other end extending to the support part; and
a second locking hole having one end formed in the second connection part and the other end extending to the support part;
Equipped with
A dishwasher wherein the front-to-back length of the first hook hole is longer than the front-to-back length of the second hook hole.
delete In paragraph 1:
A dishwasher wherein the support part, the fixing part, and the connecting part are formed as one piece by pressing a metal plate.
In paragraph 1:
A dishwasher wherein the fixing part is directly fastened to the lower surface of the tub without using a separate fastening member.
In paragraph 4:
A dishwasher wherein the fixing part is fastened to the lower surface of the tub through welding.
delete delete delete delete In paragraph 1:
A dishwasher wherein the cleaning power supplementation means is detachably coupled to a support portion of the bottom bracket.
In paragraph 10:
A dishwasher wherein the cleaning power supplementation means is supported and separated from the bottom of the tub while being spaced upward from the bottom of the tub.
In paragraph 10:
A dishwasher wherein a coupling portion coupled to the support portion of the bottom bracket is provided on the bottom of the cleaning power supplementing means.
In paragraph 12:
The coupling part,
an insertion protrusion formed integrally with the bottom of the cleaning power supplement means, inserted into the first engaging hole, and engaged with the first engaging hole; and
a hook that is integrally formed on the bottom of the cleaning power supplement means, is inserted into the second hook hole, and is hooked to the second hook hole;
Dishwasher including.
In paragraph 1:
The cleaning power supplement means,
First cleaning power supplementation means extending in an L shape along the left edge and rear edge of the lower surface of the tub; and
a second cleaning power supplementation means extending in an L-shape along the right edge and rear edge of the lower surface of the tub;
Dishwasher including.
In paragraph 1:
The cleaning power supplement means,
A flat portion having a predetermined slope in the left and right directions; and
a curved portion extending to form a continuous surface with respect to the flat portion;
Dishwasher including.
In paragraph 1:
The cleaning power supplement means,
A first extension part extending in the front-to-back direction;
a second extension part extending in the left and right directions; and
a switching part connecting the first extension part and the second extension part;
Dishwasher including.
In paragraph 16:
A first gap is formed between the first extension and the side of the tub,
A second gap is formed between the second extension and the rear of the tub,
A dishwasher wherein the switching unit is arranged to be separated from a side of the tub and a rear of the tub.

A tub having a washing space with an open front;
A rack disposed inside the tub and on which a cleaning object is placed;
a spray arm disposed between the lower surface of the tub and the rack and spraying washing water for washing the washing object;
At least one bracket disposed on the inner lower surface of the tub; and
Cleaning power supplementation means coupled to the bracket;
Including,
The at least one bracket is,
a support portion disposed to be spaced upward from the lower surface of the tub;
a fixing part disposed on a lower side of the support part and fastened to the lower surface of the tub; and
a connection part whose one end is connected to the support part and the other end is connected to the fixing part;
Including,
A dishwasher wherein the support part, the fixing part, and the connecting part are formed as one body.
In paragraph 18
A dishwasher wherein the fixing part is fastened to the lower surface of the tub through welding.
In paragraph 18:
The at least one bracket has a locking hole formed in the support part,
A coupling portion coupled to the support portion is provided to protrude on the bottom of the cleaning power supplement means,
A dishwasher in which the coupling part is inserted and coupled to the catching hole.

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