KR20140121337A - Dish Washing Machine - Google Patents

Abstract

The present invention relates to a dishwasher having a structure of spraying washing water evenly inside a washing container. The dishwasher comprises a cabinet forming an outer appearance of the dishwasher; a washing container provided in the cabinet in which dishes are washed; a dish basket provided in the washing container and accommodating dishes; a spraying unit spraying washing water to the washing container; a converting unit provided in a passage of the washing water to convert the direction of washing water sprayed from the spraying unit; at least one guide member combined to one side of the converting unit to make the converting unit movable inside the washing container. According to an embodiment of the present invention, a blind site where washing water does not reach is eliminated by having the converting unit in addition to the spraying unit, thereby enabling grouping and delicate washing inside the washing container.

Description

Dish Washing Machine [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher, and more particularly, to a dishwasher having a structure capable of uniformly spraying washing water into a washing tank.

Generally, a dishwasher is a device for washing a tableware by spraying high-pressure washing water to a tableware, and usually undergoes preliminary washing, main washing, rinsing and drying. In the preliminary washing step, the washing water is sprayed without injecting the detergent to remove the residue of the dishware. In this washing process, the washing water is sprayed and the detergent is supplied by the detergent supply device.

Generally, a dishwasher generally includes a cabinet having a washing tank therein, a pump for generating a washing water pressure, a dish basket for holding the dish and moving forward and backward, and a spraying unit for spraying washing water to the dish basket. A connecting passage for connecting the pump and the spray unit, and a flow path switching valve for selectively moving the washing water from the pump to the plurality of spray units. The washing water sprayed from the spray unit cleans the tableware.

The tableware basket includes an upper tableware basket provided at the upper portion of the washing tub and a lower tableware basket provided at the lower portion thereof.

Conventionally, the spraying unit is located above and below the upper tableware basket and above the lower tableware basket. In the case where the jetting unit is provided so as to rotate, a blind spot is generated in the corner of the washing tank provided in a square shape, so that the jetted washing water can not reach.

A structure has been proposed in which the length of the injection unit is changed while rotating so as to prevent a blind spot from reaching the washing water. This makes it possible to prevent the occurrence of blind spots in which the washing water can not reach. However, in the structure in which the spraying unit is rotated due to the reaction of the spray water pressure, the washing effect of splitting or concentrating only on a specific area and spraying can not be obtained.

Further, a structure has been proposed in which the injection unit, the drive unit for linearly moving the injection unit, and the flow path connecting the injection unit and the pump are connected by using a link or a flexible hose. However, this has a problem that the pressure loss of the flow path is large and the durability of the flow path is weak.

In addition, when the spraying unit is fixed to the tableware basket, the flow path is inefficiently disposed, causing a large loss of the flow path, and the structure of the tableware basket is complicated.

One aspect of the present invention includes a spray unit for spraying wash water to a tableware basket and a switching unit for switching the direction of the wash water sprayed from the spray unit so as to prevent occurrence of a rectangular area in which the wash water can not reach the wash tank A dishwasher can be provided.

One aspect of the present invention provides a cabinet comprising: a cabinet forming an outer appearance; A washing tub provided in the cabinet for washing the tableware; A dish basket provided in the washing tub and containing dishware; A spray unit for spraying washing water into the washing tub; A switching unit provided inside the path of the washing water sprayed so as to switch the direction of the washing water sprayed from the spraying unit; And at least one guide member coupled to one side of the switching unit so that the switching unit can move inside the washing tub.

The switching unit may be provided on at least one of the upper side, the lower side, or the side surface of the tableware basket so as to change the direction of the washing water sprayed from the spraying unit to the direction of the tableware basket.

The switching unit may include at least one recessed portion in which at least a portion of the surface contacting the washing water is concaved so as to switch the direction of the washing water sprayed from the spraying unit in the direction of the tableware basket.

The concave portion may be provided in a curved shape in order to change the direction of the washing water.

The recess may include at least one bending portion bent in the lengthwise direction of the switching unit for switching the washing water in various directions and injecting the washing water.

At least one of a plurality of grooves or protrusions for guiding the direction of the washing water may be provided inside the recess.

At least one of the grooves or protrusions may be provided only in a part of the concave portion so that the direction of the washing water is guided toward the dishware.

A pattern for switching the direction of the washing water may be provided on one surface of the switching unit in contact with the washing water.

At least a part of the switching unit may be provided with at least one slit for preventing accumulation of contaminants in the switching unit.

An opening for preventing accumulation of contaminants may be formed on the lower surface of the guide member.

The movement of the switching unit in the washing tub can be moved by the spraying pressure of the washing water sprayed from the spraying unit.

And a power generation device that drives the switching unit to move the switching unit in the cleaning tank.

And a pulley or gear coupled with the power generating device, wherein the pulley and the switching unit can be connected through a connecting member.

The guide member may be provided on the inner surface of the washing tub to guide movement of the switching unit.

The guide member is located inside the washing tub and can be coupled to the switching unit to support the central portion of the switching unit.

The guide member may be provided on at least a portion of the tableware basket and may be formed without additional components.

The guide member may be provided on at least a part of the inner surface of the washing tub and may be formed without additional additional parts.

The switching unit may be coupled to be rotatable at a predetermined angle with respect to the guide member.

The spray unit may be fixed to at least one of the inner wall surfaces of the washing tub.

The ejection unit includes at least one head group composed of at least one head for ejecting wash water, and each of the head groups may be capable of selectively ejecting wash water.

The jetting of the wash water of the head group may be such that at least one element of the jet pressure, the temperature of the wash water, and the jet time is different for each of the head groups.

The at least one head may be inclined upward in order to spray the washing water over a predetermined distance.

The injection unit may further include a flow path switching valve for selectively controlling the injection of the washing water in the head group.

The concave portion may include a first stepped portion and a second stepped portion which are provided so as to be stepped with respect to each other.

Wherein the ejection unit includes at least one head for ejecting wash water, the recess including at least one region corresponding to each of the heads, the region having different curvatures so that the wash water is discharged at different angles .

The switching unit may further include a direction switching member for switching the moving direction such that the switching unit moves in the first direction and in the second direction different from the first direction.

According to another aspect of the present invention, there is provided a dishwasher including a washing tub for washing dishes and a dish basket disposed inside the washing tub for storing dishes, the dishwasher being disposed on at least one of upper and lower sides of the dish basket, At least one jetting unit for jetting wash water in the direction of the arrows; And a switching unit for switching the direction of the washing water so that the washing water sprayed from the spray unit can switch the flow path in the second direction which is the direction of the tableware basket.

The switching unit may include a concave depression for changing the direction of the wash water from the first direction to the second direction.

The switching unit may include a driving unit for driving the switching unit to move between a front surface and a rear surface, a left surface and a right surface or a top surface and a bottom surface of the cleaning tank.

Wherein the drive unit includes at least one guide member coupled with the switching unit to guide movement of the switching unit, a power generator for driving the switching unit, a pulley or gear coupled to the power generator, And a connecting member for connecting the pulley or gear and the switching unit.

When the switching unit is moved in the direction of the injection unit, it is moved by the power generation device, and when the switching unit moves away from the injection unit, the switching unit can be moved by the water pressure of the washing water sprayed on the injection unit.

The injection unit may be arranged to be opposed to each other inside the washing tank, and the switching unit may include a plurality of concave portions arranged to face the respective injection units.

The switching unit is provided in the upper direction of the tableware basket, and the recesses are arranged to face the tableware basket, so that the flow path of the washing water can be switched to the tableware of the tableware basket.

The switching unit is provided along one surface shape of the dish basket close to the switching unit, and the jetting unit may be arranged to correspond to the shape of the switching unit.

According to an embodiment of the present invention, since the switching unit is included in addition to the injection unit, the dead zone that the washing water can not reach can be removed. In addition, due to the reciprocating movement of the switching unit, the jetting pattern of the washing water can be changed linearly to increase the jetting efficiency, and the position of the switching unit can be controlled to enable divided jetting or concentrated jetting within the utensil basket. In addition, it is possible to reduce the energy loss by reducing the loss of the flow path and to improve the cleaning efficiency.

1 is a sectional view showing the configuration of a dishwasher according to an embodiment of the present invention.
2 is a cross-sectional view illustrating the configuration of a dishwasher according to another embodiment of the present invention.
3 is a perspective view illustrating some components of a dishwasher according to another embodiment of the present invention.
FIG. 4 is a perspective view showing the injection unit and the switching unit of the dishwasher according to the embodiment of the present invention. FIG.
FIG. 5 is a plan view showing the injection unit and the switching unit of the dishwasher according to the embodiment of the present invention. FIG.
FIG. 6 is an enlarged view of a main configuration of the present invention and shows a direction in which wash water is sprayed.
Fig. 7 is an enlarged perspective view of Fig. 6A.
8 is a conceptual diagram schematically showing the flow path of the injection unit according to another embodiment of the present invention.
9 is a perspective view showing a flow path switching valve when all of the injection units according to another embodiment of the present invention are operated.
10 is a perspective view showing a flow path switching valve when a part of the injection unit according to another embodiment of the present invention is operated.
11 is a perspective view showing an injection unit according to another embodiment of the present invention.
12 is a perspective view showing a flow path switching valve when the injection unit shown in Fig. 11 is partially operated.
13 is a perspective view showing the flow path switching valve when the injection unit shown in FIG. 11 is partially operated.
14 is a plan view showing the injection unit and the switching unit according to another embodiment of the present invention.
15 is a view showing a switching unit according to another embodiment of the present invention.
16 is a view showing a state before the switching unit according to another embodiment of the present invention is in contact with the latching member.
17 is a view showing a state after the switching unit according to another embodiment of the present invention is in contact with the latching member.
18 is a perspective view showing a state before the switching unit according to another embodiment of the present invention is in contact with the latching member.
19 is a perspective view showing a state after the switching unit according to another embodiment of the present invention is in contact with the latching member.
20 is an enlarged perspective view of a switching unit according to an embodiment of the present invention.
21 is an enlarged perspective view of a switching unit according to another embodiment of the present invention.
22 is an enlarged perspective view of a switching unit according to another embodiment of the present invention.
23 is an enlarged perspective view of a switching unit according to another embodiment of the present invention.
24 is a cross-sectional view showing a cross section of the switching unit according to another embodiment of the present invention.
25 is a diagram showing a switching unit according to another embodiment of the present invention.
26 is a cross-sectional view of a switching unit according to another embodiment of the present invention.
FIG. 27 is a view showing the injection unit and the switching unit of the dishwasher according to another embodiment of the present invention. FIG.
28 is a view showing a switching unit according to another embodiment of the present invention.
29 is a cross-sectional view showing a switching unit according to another embodiment of the present invention.
30 is a view showing a switching unit according to another embodiment of the present invention.
31 is a view showing a switching unit according to another embodiment of the present invention.
32 is a sectional view showing the configuration of a dishwasher according to another embodiment of the present invention.
33 is a view showing a part of a dishwasher according to another embodiment of the present invention.
34 is a view showing a part of a dishwasher according to another embodiment of the present invention.
35 is a view schematically showing movement of the switching unit of the dishwasher according to still another embodiment of the present invention.
Fig. 36 is a diagram showing the switching unit shown in Fig.
Fig. 37 is a view showing the switching unit shown in Fig. 36 from another angle.
38 is a view showing a part of a dishwasher according to another embodiment of the present invention.

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

1 is a sectional view showing the configuration of a dishwasher according to an embodiment of the present invention.

1, the dishwasher 100 includes a cabinet 101 forming an outer appearance, and a washing tub 103 provided inside the cabinet 101 to wash the dishes. The lower part of the washing tub 103 includes a sump 143 in which washing water is stored.

The front surface of the cabinet 101 is opened to accommodate dishes in the washing tub 103 or draw out dishes from the washing tub 103 and a door 102 is provided to open and close the washing tub 103. The door 102 is hinged to the lower part of the front surface of the cabinet 101 and rotates to open / close the washing tub 103.

A pair of dish baskets 104 are installed in upper and lower portions of the washing tub 103 so as to move forward and backward. The tableware basket 104 is drawn out and stored through the front surface of the cabinet 101 which is opened by at least one rack 105 that slidably supports the tableware basket 104.

The tableware baskets 104 are formed by wires arranged in a lattice shape so that the tableware housed therein is exposed to the outside of the tableware basket 104 and can be cleaned.

At least one side of the washing tank 103 is equipped with a spraying unit 110 for spraying washing water to the tableware basket 104. The spray unit 110 may include an upper spray unit 110a and a lower spray unit 110b to spray water onto the upper tableware basket 104a and the lower tableware basket 104b, no.

The spraying unit 110 is provided to spray wash water into the inside of the washing tub 103. The spray unit 110 is provided on at least one surface of the washing tub 103 and may be provided to spray water in at least one direction of the lower end, the upper end, and the side surface of the dish basket 104. The injection unit 110 may be provided to be fixed to at least one surface of the washing tub 103. The spray unit 110 may be located at a height lower than or at the lower end of the tableware basket 104 in which the object to be cleaned is housed. The water can be injected toward the opposite direction of the position where the injection unit 110 is located. The spray unit 110 can spray water so that at least one primary water jet is formed in a direction substantially parallel to the lower end of the dish basket 104. [

A switching unit (120) for switching the direction of the washing water sprayed from the spraying unit (110) is provided in the washing tub (103). The switching unit 120 is provided inside the path of the washing water to be sprayed to change the direction of the washing water. The direction of the washing water sprayed from the spraying unit 110 is defined as a first direction and the direction of the washing water converted by the switching unit 120 is defined as a second direction. In one example, the switching unit 120 may be provided to face the injection unit 110. [ The switching unit 120 may be located at the lower end of the tableware basket 104. The switching unit 120 is connected to the bottom of the tableware basket 104 when the dispensing unit 110 is provided to spray water to the lower end of the tableware basket 104. [ 104 to move linearly in a direction away from the injection unit 110 or in a direction approaching the injection unit 110. [ The primary water jet sprayed from the spraying unit 110 is sprayed toward the switching unit 120 and is switched by the switching unit 120 so as to be directed toward the tableware located inside the tableware basket 104 By forming a water jet, the tableware can be cleaned substantially using a secondary water jet. For example, the injection unit 110 is mounted on the rear surface of the cleaning tank, and the switching unit 120 can be positioned in a direction parallel to the injection unit 110. [ The switching unit 120 can linearly reciprocate in the direction away from the direction close to the injection unit 110 or vice versa.

Further, the dishwasher 100 may include a driving unit for driving the switching unit 120 so as to be movable in the washing tub 103. The driving unit may include a guide member 131 coupled to the switching unit 120 and a power generating unit 135 and a pulley 134 for driving the switching unit 120. [ In addition, the drive unit may include a connecting member 133 connecting the pulley 134 and the switching unit 120. This will be described later.

The washing tub 103 may be provided with a heater 144 for heating washing water and a heater mounting groove 145. A heater mounting groove 145 is provided on the bottom of the washing tub 103 and a heater 144 is mounted on the heater mounting groove 145.

The sump 143 is provided at the bottom center of the washing tub 103 so as to collect the washing water and pump it. The sump 143 comprises a washing pump 142 for pumping washing water to a high pressure and a pump motor 141 for driving the washing pump 142. A drain pump 146 for draining wash water is provided at the bottom of the washing tub 103.

The cleaning pump 142 pumps the wash water to the upper injection unit 110a through the first supply pipe 106 and the wash water to the lower injection unit 110b through the second supply pipe 108. [ In the drawing, the first supply pipe 106 and the second supply pipe 108 are separately shown to be coupled to the sump 43, but the present invention is not limited thereto. That is, the first supply pipe 106 and the second supply pipe 108 may be branched from one pipe. The first supply pipe 106 may be connected to the connection unit 107 and the connection unit 107 may be connected to the injection unit 110.

The sump 143 may include a turbidity sensor (not shown) for detecting the degree of contamination of the washing water. A controller (not shown) of the dishwasher 100 can detect the degree of contamination of the washing water using a turbidity sensor (not shown) and control the number of times of washing or rinsing. That is, the washing or rinsing step can be increased when the contamination degree is high, and the washing or rinsing step can be decreased when the contamination degree is low.

The switching unit 120 may be combined with a driving unit that drives the switching unit 120 to be movable in the washing tub 103. [ The driving unit may include at least one guide member 131 coupled to one side of the switching unit 120 to guide the movement of the switching unit 120. [ According to one embodiment of the present invention, the guide member 131 may be provided by a rail, but is not limited thereto. In one example, the guide member may be formed on at least a portion of the tableware basket 104 without additional components, and the guide member may be formed on at least a portion of the inner surface of the washing tub 103 without additional components. The roller 132 of the switching unit 120 is coupled to the guide member 131 of the drive unit and is movable between the front and rear surfaces of the washing tub 103 along the guide member 131. [ The guide member 131 of the drive unit is coupled to both side walls 103a and 103b of the cleaning tank 103. [ The motor 135 for driving the switching unit 120 is coupled to the pulley 134. [ The pulley 134 is connected to the switching unit 120 through the connecting member 133. [ The connecting member 133 may be a wire rope or a thin and long cord made of carbon. In addition, a belt or a ball screw may be used as the connecting member.

The motor 135 for driving the switching unit 120 when the guide member 131 is coupled to the both side walls 103a and 103b of the washing tub 103 is installed at one side of the both side walls 103a and 103b, The pulleys 134 of the guide members 131 may be connected to the inside of the washing tub 103 or outside and connected to the shafts.

As the power generator 135 is driven, the pulley 134 rotates in one direction to move the switching unit 120 in the direction of the injection unit 110, and the pulley 134 rotates in the other direction, Can be moved in the direction opposite to the injection unit 110. Alternatively, it is also possible to drive it in the opposite direction. Further, the switching unit 120 can be moved in the direction opposite to the injection unit 110 by the water pressure of the washing water injected from the injection unit 110. [ In this case, since the injection unit 110 moves using the washing water, there is an advantage that strong and intensive washing can be performed by using the switching unit 120 at the same time of washing the dishes. In addition, according to the embodiment of the present invention, since the flow path of the driving unit and the washing water need not be directly connected, it is possible to implement the dishwasher 100 having a simpler structure than the conventional one.

As the power generation device 135, various motors such as an ultrasonic motor and a linear motor may be used.

The moving speed of the injection unit 110 can be controlled through the speed control of the power generator 135 in driving the injection unit 110 with the power generator 135. [ The speed control of the power generator 135 can be controlled through a control unit (not shown).

FIG. 6 is an enlarged view of a main configuration of the present invention, showing directions in which wash water is sprayed, and FIG. 7 is an enlarged perspective view of FIG.

6 and 7, the washing water is injected in the first direction D1 from the injection unit 110 toward the tableware basket 104. As shown in Fig. That is, the washing water is sprayed in a direction parallel to the tableware basket 104. The washing water contacts the concave portion of the switching unit 120 and is turned in the second direction D2, D2 ', D2' 'with respect to the tableware basket 104. [ The washing water injected in the first direction D1 corresponds to the primary water jet and the washing water whose direction has been changed to the second direction D2, D2 ', D2 "corresponds to the secondary water jet. The diverted secondary water jets can be sprayed in a sheet form and thus can be sprayed with a wide range of tableware.

The angle alpha of the flow path in which the washing water injected from the injection unit 110 is converted into the second direction through the switching unit 120 is about 40 to 140 mu m for the washing water sprayed from the injection unit 110 have. The direction of the washing water is switched in the vertical direction of the tableware basket 104, so that the tableware 1 and 2 can be efficiently cleaned. The washing water can be sprayed in various directions according to the angle of the concave portion. That is, the washing water can be sprayed at various angles with respect to the dishes 1, 2. As shown in the drawing, the direction of the washing water sprayed in the second direction is also D2 'and D2' 'directions in addition to the D2 direction. The changing unit 120 can change the direction of the washing water at various angles because the tableware in the tableware basket 104 can be positioned in various directions in the lateral (1) or vertical (2) directions. Washing substantially the dishes 1 and 2 is washing water whose direction has been diverted by the switching unit 120 in the second direction D2, D2 ', D2' '. Since the switching unit 120 can move forward or backward of the washing tub 103 by the drive unit, it is possible to perform intensive, intensive washing on a specific area of the tableware as the switching unit 120 moves.

The head 115 of the injection unit 110 may be provided to be inclined upward from a vertical line perpendicular to the body 114 of the injection unit 110. [ The angle? Between the vertical line perpendicular to the body 114 and the head 115 may be between 2 and 5 mm. This is to prevent the washing water injected from the injection unit 110 from dropping before reaching a certain distance or more because the free water falls.

Table 1 below is a table showing the height at which the washing water rises according to the upward inclination angle of the injection unit 110.

Upward tilt angle (°)
Lift height (mm) 3.1 mAq 4.0 mAq One 1.0 1.2 1.5 2.2 2.7 2 3.8 4.8 2.5 6.0 7.6 3 8.6 10.9 3.5 11.7 14.8 4 15.3 19.3 4.5 19.3 24.5 5 23.8 30.2

As shown in Table 1, as the upward inclination angle? Of the head 115 of the injection unit 110 is increased, the rising height (mm) of the washing water injected becomes higher, Free fall. When the upward inclination angle (?) Is too small, the washing water rapidly falls freely, and even when the upward inclination angle (?) Is too large, it is required to maintain a proper inclination angle since it ascends to the highest point and then falls freely rapidly. It is preferable that the head 115 of the injection unit 110 injects the washing water at an angle of not more than 5 degrees upward. In this case, the switching unit 120 reciprocates while washing the dishes in the dish basket 104 So that the cleaning performance is improved. Even when the switching unit 120 is located farthest from the injection unit 110 when the upward inclination angle beta is 2 to 5 degrees as in the embodiment of the present invention, It is possible to prevent the washing water from falling freely without being sprayed to the switching unit 120 because the washing water is sufficient to move to the switching unit 120. [ When the free fall of the washing water occurs rapidly, the size of the switching unit must be increased in order to change the direction of the washing water. However, when the head 115 of the injection unit 110 is inclined upward by more than a certain angle as in the embodiment of the present invention There is no need to increase the size of the switching unit.

 FIG. 8 is a conceptual diagram schematically showing the flow path of the injection unit according to another embodiment of the present invention, and FIG. 9 is a perspective view showing a flow path switching valve when all of the injection units according to another embodiment of the present invention are operated And FIG. 10 is a perspective view showing a flow path switching valve when a part of the injection unit according to another embodiment of the present invention is operated.

As shown in FIGS. 8 to 10, the ejection unit 210 according to an embodiment of the present invention may include at least one head group 211, 212. 8 to 10, the head group includes the first head group 211 and the second head group 212, but is not limited thereto.

The first head group 211 includes a first head 216a, a second head 216b and a third head 216c. The second head group 212 includes a fourth head 217a, A second head 217b, and a sixth head 217c. Each of the heads is composed of three heads according to the drawings, but the present invention is not limited thereto. The first head group 211 and the second head group 212 are operated by both the first head group 211 and the second head group 212 by the flow path switching valve 220 so that the washing water is sprayed or only partially operated Wash water may be sprayed. The flow path switching valve 220 is controlled by the controller 230 so that at least one of the injection water pressure, the spray time, and the spray temperature of the wash water can be determined. That is, according to the selection of the operation mode of the user's dishwasher, at least one of the injection pressure, the injection time, and the injection temperature may be controlled for each of the head groups. For example, washing water may be sprayed by setting at least one of the injection water pressure, spraying time, and spraying temperature high for the predetermined head group, and conversely, at least one of the factors may be set low to spray the washing water.

The flow path switching valve 220 includes a plurality of holes 221a, 221b and 221c provided in the base part 222 and the base part 222. [ It is determined whether the washing water is injected in the first head group 211 or the second head group 212 depending on the positions of the plurality of holes 221a, 221b, and 221c. A first flow path 213a through which the washing water flows is provided inside the first head group 211 and a second flow path 214a through which the washing water flows is provided inside the second head group 212. When one of the plurality of holes 221a, 221b and 221c of the flow path switching valve 220 is located in the first flow path 213a or the second flow path 214a, the first flow path 213a or the second flow path 214a, So that the washing water is sprayed from the first head group 211 or the second head group 212.

When the base portion 222 of the flow path switching valve 220 rotates and the positions of the plurality of holes 221a, 221b and 221c move so that the positions of the flow paths 213a and 214a do not coincide with each other, Lt; / RTI >

10, since the holes 221a, 221b, and 221c provided in the base portion 222 rotate according to the rotation of the base portion 222, and the positions of the holes and the first flow path 213a do not coincide with each other, The one flow path 213a is closed. Accordingly, the washing water is not sprayed in the first head group 211 but the washing water is sprayed only in the second head group 212 connected to the opened second flow path 214a. In this way, it is possible to control only a part of the injection unit 210 to operate by the operation of the flow path switching valve 220.

In the case where the tableware is located only in a predetermined area according to the operation of the flow path switching valve 220, since the washing water can be sprayed only to a desired area, not only the saving of washing water is possible but also the spray water pressure, spraying time, Can be controlled.

FIG. 11 is a perspective view showing a spraying unit according to another embodiment of the present invention, FIG. 12 is a perspective view showing a flow path switching valve when the spraying unit shown in FIG. 11 is partially operated, Is a perspective view showing the flow path switching valve when a part of the injection unit shown in Fig.

The embodiment of the present invention shown in Figs. 11 to 13 differs from the embodiment of the present invention shown in Figs. 8 to 10 in the position of the flow path switching valve.

It is the same that the flow-switching valve 250 regulates the wash water injected by each of the head groups 240. [ Therefore, when the positions of the plurality of holes 255a and 255b move due to the rotation of the base portion 255 and the positions of the flow paths 243a and 243b do not coincide with each other, the flow paths 243a and 243b are closed, And 255b are coincident with the positions of the flow paths 243a and 243b, the flow path is opened so that the washing water can be injected through the head group 240. [

According to one embodiment of the present invention, the base portion 255 may be provided in a cylindrical shape. At least one or more holes 255a and 255b which can communicate with the flow paths 243a and 243b may be provided on the curved surface of the base part 255. [ The first hole 255a communicates with the first head group 241 to control the washing water sprayed to the first head group 241. [ The second hole 255b communicates with the second head group 242 to control the washing water jetted from the second head group 242. [ The first hole 255a and the first communicating tube 251 communicate with each other to form a first flow path 243a connected to the first head group 241. [ The second hole 255b and the second communicating tube 253 are communicated with each other to form a second flow path 243b connected to the second head group 242. [ The third communicating pipe 252 between the first communicating pipe 251 and the second communicating pipe 253 may be connected to the injecting unit located at the upper end.

In this manner, the flow path switching valve 250 is variously positioned to control the washing water sprayed from each of the head groups 240.

It is possible to control the injection of the washing water from the first head group 211, 241 and the second head group 212, 242 using the flow path switching valves 220, 250. The first head group 211, 241 and the second head group 212, 242 can be arranged in various ways. The first head group 216a and the second head group 216b may be disposed between the first head 216a and the second head 216b and the third head 216c between the first head 216a and the second head 216b. The fourth heads 217a and 246a and the fifth heads 217b and 246b and the sixth head of the first head group can be positioned at odd positions, It is possible to control the discharge of wash water separately from the head located at the odd-numbered head and the head located at the even-numbered head.

FIG. 14 is a plan view showing an injection unit and a switching unit according to another embodiment of the present invention, FIG. 15 is a view showing a switching unit according to another embodiment of the present invention, and FIG. FIG. 17 is a view showing a state after the switching unit according to another embodiment of the present invention is in contact with the latching member, and FIG. 17 18 and 19 are perspective views showing the state before and after the switching unit and the engaging member are in contact with each other. .

As shown in Figs. 14 to 19, the switching unit 320 can be coupled to one guide member 340. Fig. The guide member 340 is located inside the cleaning tank and can be coupled to the center of the switching unit 320 for supporting the switching unit 320. A locking member 350 for changing the angle of the switching unit 320 may be located at one side of the washing tub, which will be described later.

The guide member 340 may be provided with a holder 330 for guiding the coupling between the switching unit 320 and the guide member 340. The holder 330 is coupled to the guide member 340 and the switching unit 320 is coupled to the holder 330. One side of the switching unit 320 may be provided with a coupling part 323 which is projected upward to engage with the holder 330. The engaging portion 323 and the holder 330 can be hinged by the engaging member 324. [ On either side of the switching unit 320, a balance member 321 may be coupled to prevent the switching unit 320 from swinging. The balance member 321 may be a roller that smoothly moves while maintaining the height of both sides of the switching unit 320 at the same level. The balance member 321 may be coupled to the lower surface of the switching unit 320. To this end, ribs 322 for engaging the balance member 321 may be provided on both sides of the switching unit 320. On the outer surface of the balance member 321, a mitigating member (not shown) for mitigating impact generated when the diversion unit 320 is moved can be separately coupled. Rubber can be used as a mitigating member (not shown).

The switching unit 320 is hinged to be rotatable with respect to the holder 330 by a predetermined angle or more. Accordingly, before the switching unit 320 comes into contact with the latching member 350, the inside of the washing tank moves to the state shown in FIG. 12, after the switching unit 320 contacts the latching member 350, the switching unit 320 rotates by a predetermined angle or more with respect to the holder 330 coupled to the guide member 340. As shown in FIG. Accordingly, since the angle of the switching unit 320 changes, the injection angle of the washing water for switching the flow path by the switching unit 320 also changes. Therefore, since the switching unit 320 can be rotated at various angles, it is possible to prevent the generation of blind spots in which the washing water is not sprayed.

Further, as shown in FIG. 15, an opening 340a may be provided on a lower surface of the guide member 340. FIG. Accordingly, the contaminants generated during the washing of the tableware can escape through the opening portion 340a and accumulation of contaminants in the guide member 340 can be prevented.

20 is an enlarged perspective view of a switching unit according to an embodiment of the present invention.

20, the switching unit 120 may include a concave portion 121 for switching the direction of the washing water. As shown in the drawing, the concave portion 121 is provided in a curved shape, but is not limited thereto.

A rear wall 123 is provided on the rear surface of the concave portion 121, and side walls 122 are provided on both sides. The rollers can engage with both side walls 122. The recessed portion 121 of the switching unit 120 guides the direction of the washing water sprayed from the spraying unit to be switched.

The washing water is injected from the injection hole of the injection unit but the washing water whose direction is changed in the second direction D2 along the concave portion 121 of the switching unit 120 is sprayed onto the tableware, A large area of wash water is sprayed, thereby reducing the possibility of untreated parts remaining in the dishware.

21 to 28 are enlarged perspective views of a switching unit according to various embodiments of the present invention.

21, the recessed portion 411 may include at least one bent portion 414 bent in the longitudinal direction of the switching unit 410 for switching the washing water in various directions and injecting the washing water. The bent portion 414 may be formed to be bent at various angles in the direction in which the concave portion 411 is formed or in the opposite direction. Whereby the direction of the washing water to be sprayed can be adjusted. Also, a plurality of bending portions 414 may be provided, and it is also possible to spray the washing water variously according to the respective regions.

22, the switching unit 420 may be provided with a plurality of grooves 424 for guiding the direction of the washing water to the concave portion 421. [ The washing water contacts the groove 424 and is pushed upward along the groove 424 of the concave portion 421 by the water pressure so that the direction of the washing water is changed.

23, the concave portion 431 is divided into two regions. That is, the first region 435 in which the groove is not formed and the second region 434 in which the groove is formed may be included. Accordingly, the washing water injected from the injection unit is injected along the groove of the second region 434 to change the direction.

24, the recesses 444 and 445 may be formed of a curved surface 444 and a flat surface 445. [ The washing water sprayed from the spraying unit may vary in the reach distance to the switching unit 440 depending on the RPM of the pump. In other words, if the water pressure is low, it can not be sprayed away, so it travels a relatively small distance. If the water pressure is high, it is sprayed far away and travels a relatively large distance. Even if the switching unit 440 is located farthest from the jetting unit, in order for the washing water to be jetted to be redirected by the switching unit 440, the jetting zone of the switching unit 440 in which the washing water reaches the switching unit 440 It is important. When the vertical section of the switching unit 440 is constituted by a curved section S2 constituted by a straight section S1 and a curved surface 444 constituted by a plane 445 as shown in Fig. 23, Is formed in the straight line section S1.

The straight section S1 of the switching unit 440 must be formed to have a height d1 or more so that the washing water injected can reach the switching unit 440 with minimum flow loss. It is preferable that the straight section S1 is formed so that the vertical height d1 from the bottom surface of the switching unit 440 is 15 mm or more. It is also preferable that the curved section S2 is formed on the upper side of the straight section S1 in order for the washing water that has reached the straight section S1 to smoothly change direction for the formation of the second water jet. The vertical height d2 of the curve section from the bottom surface of the switching unit 440 is preferably higher than the vertical height d1 of the straight section S2. That is, the relationship d1 > d2 can be established.

As described in Figs. 16 to 19, the switching unit 440 is rotated by the latching member of the injection unit. In consideration of this rotation interval, the incident angle [alpha] of the washing water entering into the switching unit 440 is 35 ㅀ or less.

The recesses may be provided in various shapes and are not limited to those shown in Fig. For example, the concave portion may be a combination of a quadratic curve and a first-order curve such as circle, ellipse, parabolic, hyperbolic, and involute.

25 to 27, the recessed portion 451 of the switching unit 450 includes an inflow portion 455 into which the wash water flows and a discharge outlet portion 456 and 457 into which the wash water is injected. The outflow portions 456 and 457 include a first step 456 and a second step 457. The first step 456 and the second step 457 may be stepped. That is, the first stepped portion 456 and the second stepped portion 457 may be provided so that the cross sectional shape is not constant when the switching unit 450 is cut in a certain direction. A plurality of first step 456 and second step 457 may be provided. The step between the first step 456 and the second step 457 may be at least 2 mm or more. The flow path of the washing water formed by the inflow section 455 and the first step 456 is defined as the first area and the flow path of the washing water formed by the inflow section 455 and the second step section 457 is defined as the first area. 2 area. The first area and the second area may be alternately positioned to form the switching unit 450. [

The inlet 455 and the outlet 456 are all curved but are not limited thereto and the inlet 455 may be provided in a plane so that the path of the wash water includes a straight section . In this case, the slope of the straight line section of the first area and the slope of the straight line section of the second area may be the same, and the length of the curve section may be different. Accordingly, it is possible to prevent interference between water jets due to the shape of each sheet formed by the curved section. The slope of the straight line section of the first area and the slope of the straight line section of the second area may be different from each other so that the height of the primary water jet introduced into the switching unit 450 and converted into the secondary water jet can be different .

 This is to prevent the washing water sprayed from the head of each spraying unit from interfering with each other after the flow path is switched by the switching unit 450 to weaken the spraying power of the washing water. Since the flow path of the washing water is changed along the switching unit 450, when the switching unit 450 has a stepped portion formed thereon, there is an angle difference between the adjacent washing water, so that interference between the washing water can be prevented in advance .

27, when the number of the heads 115 of the injection unit 110 is six, the area where the washing water reaches the switching unit 450 may be composed of six areas corresponding to the head 115. [ The recesses 451 are divided into regions corresponding to the heads 115 of the injection units 110 in one switching unit 450 and the regions corresponding to the heads 115 are divided into regions Likewise, the first area and the second area may be alternately located. In this case, in order to minimize the loss of the washing water to form a sheet-shaped water jet, it is preferable that the six heads 115 maintain the respective distances to about 80 mm. The first region and the second region may have different curvatures so that the sprayed wash water is sprayed at different angles. The curvature formed by the outflow portion 456 of the first region and the outflow portion 457 of the second region is different but not limited thereto and the curvature of the inflow portion 455 may be different It is possible.

28 is a view showing a switching unit according to another embodiment of the present invention.

As shown in Fig. 28, the switching unit 460 may be provided such that the jetting angles of the secondary water jet are different for each of the heads for jetting the washing water.

The switching unit 460 may be provided to include a plurality of recesses 461, 462. The first concave portion 461 and the second concave portion 462 may be provided stepwise and the first concave portion 461 and the second concave portion 462 may be alternately arranged to form one switching unit 460, . ≪ / RTI > According to an embodiment of the present invention, three concave portions 461 and three concave portions 462 may be provided to form six concave portions 461 and 462, 115, respectively.

Since the first recess 461 and the second recess 462 are provided stepwise, the generation height of the secondary water jet, in which the washing water is diverted in the second direction and is sprayed, may be varied. Accordingly, the discharging angles of the secondary water jet discharged from the first recess 461 and the second recess 462 can be different from each other. For example, the ejecting angle may be set such that the ejecting angles of the first recess 461 and the second recess 462 are different from each other in the range of 40 to 140..

The slope of the straight line section of the first area and the slope of the straight line section of the second area may be different from each other so that the height of the primary water jet introduced into the switching unit 450 and converted into the secondary water jet can be different .

29 and 30 are cross-sections illustrating a switching unit according to various embodiments of the present invention.

Patterns 472 and 482 of various shapes may be provided in the recesses 471 and 481 of the switching units 470 and 480 as shown in Figs. For example, according to an embodiment of the present invention shown in FIG. 28, a scaly pattern 472 may be provided. According to an embodiment of the present invention shown in FIG. 29, a diamond pattern 482 may be provided. Such a variety of patterns can reduce the frictional resistance generated by contact with the switching units 470 and 480 for switching the flow path of the washing water. Accordingly, washing water can be prevented from contacting the switching units 470 and 480 and weakening the spraying force.

31 is a view showing a switching unit according to another embodiment of the present invention.

As shown in Fig. 31, the switching unit 490 may be provided with at least one slit 493, 494. The switching unit 490 may be provided with a first step 496 and a second step 497. As shown in the drawing, the switching unit 490 is provided with four first slits 493 and one second slit 494, but is not limited thereto. The first slit 493 may be provided in a direction in which the washing water flows in and out, and the second slit 494 may be formed to be perpendicular to the first slit 493. [ The second slit 494 may be provided on a surface that contacts the holder 492. [

The contaminants generated while washing the tableware can escape without being accumulated in the switching unit 490 through the slits 493 and 494 of the switching unit 490. In the case of the first slit 493, accumulation of contaminants on the surface of the switching unit 490 can be prevented. In the case of the second slit 494, contaminants that can accumulate in the guide member 491 are allowed to escape through the second slit 494. The switching unit 490 and the guide unit 491 are also cleaned by the washing water while the contaminants are discharged through the slits 493 and 494 in the process of washing the dishes through the slits 493 and 494, Accumulation of contaminants in the guide unit 491 can be prevented.

32 is a sectional view showing the configuration of a dishwasher according to another embodiment of the present invention.

32, the switching unit 520 may be located above the tableware basket 104. [ Accordingly, the rack 105 and the drive units 531, 532, and 132 can also be located above the dish basket 104. [ According to the embodiment of the present invention shown in FIG. 30, a plurality of recesses 521 and 522 of the switching unit 520 are provided. The upper concave portion 521 located on the upper side is recessed upward to switch the flow path from the spray unit 110 to the upper dish basket 104a. The lower concave portion 522 located at the lower side is recessed downward to switch the flow path of the washing water sprayed from the spray unit 110 to the lower dish basket 104b. Thus, the switching unit can be located above, below, left, and right of the tableware basket to switch the flow path of the washing water.

33 is a view showing a part of a dishwasher according to another embodiment of the present invention.

33, the spray units 611 and 612 may be provided so as to face each other inside the cleaning tank. The switching unit 620 is provided inside the direction of the flow path injected from each of the injection units 611 and 612. [ A plurality of recesses 621 and 622 are provided so as to face the respective injection units 611 and 612 so as to switch the direction of the washing water sprayed from each of the spray units 611 and 612.

The first spray unit 611 and the first recess 621 are opposed to each other so that the washing water sprayed from the first spray unit 611 is guided by the first recess 621 to the dish basket 104, Direction. The second spray unit 612 and the second recess 622 are opposed to each other so that the washing water sprayed from the second spray unit 612 is supplied to the dish basket 104 by the second recess 622, Direction.

The switching unit 620 can be driven by the power generating device as in the above embodiment. However, the present invention is not limited thereto, and the switching unit 620 can be moved by the washing water injected from the injection units 611 and 612. That is, the switching unit 620 can be moved in the direction of the second injection unit 612 by the washing water injected from the first injection unit 611, and on the contrary, by the washing water injected from the second injection unit 612, The switching unit 620 can move in the direction of the one-injection unit 611. [ Therefore, the position of the switching unit 620 can be determined by the washing water injected from the first injecting unit 611 and the second injecting unit 612. The washing water injected into the first injection unit 611 and the second injection unit 612 can be controlled by the flow path switching valve 615.

The injection units 611 and 612 are provided opposite to both sides of the washing tub 103 and are provided so as to be opposed to the switching unit 620 and the respective injection units 611 and 612, 611, and 612, respectively, of the switching unit 620.

34 is a view showing a part of a dishwasher according to another embodiment of the present invention.

As shown in Fig. 34, at least a part of the injection unit 650 may be located outside the washing tub 643. [ That is, only a part of the head 651 of the spraying unit 650 is located inside the washing tub 643, and the body 652 of the spraying unit 650 can be located outside the washing tub 643. At least a portion of the injection unit 650 may be located in the space between the cleaning bath 643 and the cabinet 101. [ Since only the head 651 of the jetting unit 650 is located inside the washing tub 643, it is possible to widen the space in which the washing water is jetted, thereby making it possible to prevent blind spots in which the washing water is not jetted.

34, the switching unit 660 located below the tableware basket 104 and the tableware basket 104, and the guide unit 660 for moving the switching unit 660, similarly to the other embodiments, (661). In the case where the reference numerals are the same, it means the same contents as the above.

Fig. 35 is a view schematically showing movement of the switching unit of the dish washer according to another embodiment of the present invention, Fig. 36 is a figure showing the switching unit shown in Fig. 35, Fig. 5 is a view showing the switching unit shown in Fig.

35 to 37, the switching unit 680 can move not only linearly in the washing tub 673 but also with a constant path. That is, the switching unit 680 can be provided to move in the first direction R1 and the second direction R2 different from the first direction R1. 35, the switching unit 680 is capable of moving in a rectangular closed loop. This embodiment is shown in detail in Figs. 36 and 37. Fig.

35, in order to move the switching unit 680, in addition to the guide member 681 for moving the switching unit 680 in the first direction R1, the switching unit 680 is moved in the second direction R2, The direction changing members 691 and 692 are required. According to one embodiment of the present invention, the direction changing members 691 and 692 include first direction switching members 691a and 691b provided on both sides of the switching unit 680 in a wedge shape, 691b, 691b, 691b, 691a, 691b, respectively. According to an embodiment of the present invention, one of the second direction switching members 692a and 692b is provided in the injection unit 670 and the other is provided in the guide member 680 provided on the opposite side of the injection unit 670 Can be provided on one side. One of the first direction switching members 691a and 691b may be provided to face the injection unit 670 and the other may be provided on the opposite side to the injection unit 670. [

When the switching unit 680 moves with respect to the guide member 681 and the first direction switching members 691a and 691b and the second switching members 692a and 692b make contact with each other, It can move in the second direction R2 relative to the guide member 681 by the shape of the members 692a and 692b. Movements caused by the direction changing members 691 and 692 when the switching unit 680 moves toward the jetting unit 670 and the opposite side of the jetting unit 670 are opposite to each other. That is, the switching unit 680 moves in the direction of the jetting unit 670 and the first direction switching member 691a and the second direction switching member 692a come into contact with each other, and the switching unit 680 moves to the left. When the switching unit 680 moves to the opposite side of the ejecting unit 670 and the first direction switching member 691b and the second direction switching member 692b make contact with each other, the switching unit 680 can move to the right.

As such, the diversion members 691 and 692 enable the diversion unit 680 to form various closed loops. It is also possible to form a direction changing member capable of pushing the guide member 681 separately from the above-described embodiment to form the closed loop by moving the guide member 681 in the second direction R2.

38 is a view showing a part of a dishwasher according to another embodiment of the present invention.

According to one embodiment of the present invention shown in Figure 38, the dishwasher 700 includes an upper tableware basket 704 and a lower tableware basket 705. The upper tableware basket 704 may include a first tableware receiving portion 704a and a second tableware receiving portion 704b. The first table accommodating portion 704a and the second table accommodating portion 704b may be different in height in order to efficiently accommodate different kinds of dishes.

The upper switching unit 706 may be provided along the bottom shape of the upper tableware basket 704. [ In the case of the embodiment shown in FIG. 28, since the upper switching unit 706 is positioned below the upper dish basket 704, the upper switching unit 706 is provided along the bottom shape of the upper table basket 704, If the unit is positioned above the tableware basket, it may be provided along the top surface of the tableware basket. That is, the switching unit is provided along the shape of one surface of the tableware basket close to the switching unit. Accordingly, the upper ejection unit may include a plurality of head groups 711 and 712. The first head group 711 is positioned to correspond to the first table accommodating portion 704a and may include a plurality of heads 711a, 711b, 711c, and 711d. The second head group 712 is positioned to correspond to the second table accommodating portion 704b and includes a plurality of heads 712a, 712b, and 712c.

In the case of the lower tableware basket 705, a bottom case 705a capable of receiving the tableware can be provided on one side of the lower tableware basket 705. A lower stage switching unit 707 corresponding to the lower tableware basket 705 is provided and a lower stage injection unit 731 capable of spraying the washing water to the lower stage switching unit 707 is provided. The lower stage injection unit 731 may include a plurality of heads 731a, 731b, 731c, 731d, and 731e.

In this manner, the switching units 706 and 707 of various shapes are provided according to the shape of the dish baskets 704 and 705, and the flow path of the washing water can be efficiently switched in the direction of the tableware basket.

The shapes of the regions constituting the switching units 706 and 707 can be changed according to the spacing between the wires or the frames formed in the dish baskets 704 and 705 or the type of tableware housed in the dish baskets 704 and 705. [ As shown in FIG. 38, the dish baskets 704 and 705 may have different spacing between the wires formed according to the type of tableware to be accommodated. That is, the large tableware can be accommodated in the tableware basket 705 having a large gap between the wafers, but a small tableware such as a spoon can be accommodated inside the bottom case 705a in which the interval between the wires is small. The shapes of the switching bases 704 and 705 and the switching units 706 and 707 corresponding to the spacing between the formed wires and the curvature of the recess may vary.

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 .

100, 150, 500, 600, 700: dishwasher 101, 701: cabinet
102: door 103, 703: washing tank
104, 704, 705: dish basket 105: rack
110, 210, 611, 612, 650, 670:
120, 320, 410, 420, 430, 440, 450, 460, 470, 480, 490, 520, 620, 660, 680, 706,
131, 340, 491, 661, 681:
330, 492: holder
350: latching member 691: first direction switching member
692: second direction switching member

Claims (34)

A cabinet forming an appearance;
A washing tub provided in the cabinet for washing the tableware;
A dish basket provided in the washing tub and containing dishware;
A spray unit for spraying washing water into the washing tub;
A switching unit provided inside the path of the washing water sprayed so as to switch the direction of the washing water sprayed from the spraying unit;
At least one guide member coupled to one side of the switching unit so that the switching unit can move inside the cleaning tank;
Wherein the dishwasher comprises: The method according to claim 1,
Wherein the switching unit is provided on at least one of the upper side, the lower side, or the side surface of the tableware basket so as to switch the direction of the washing water sprayed from the spray unit to the direction of the tableware basket. The method according to claim 1,
Wherein the switching unit includes at least one recessed portion in which at least a part of a surface contacting the washing water is concaved so as to switch the direction of the washing water sprayed from the spraying unit in the direction of the tableware basket. The method of claim 3,
Wherein the concave portion is provided in a curved shape for redirecting the washing water. 5. The method of claim 4,
Wherein the concave portion includes at least one bent portion bent in the longitudinal direction of the switching unit to switch the washing water in various directions and to inject the washing water. 5. The method of claim 4,
Wherein at least one of a plurality of grooves or projections for guiding the direction of the washing water is provided inside the concave portion. The method according to claim 6,
Wherein at least one of the grooves or protrusions is provided only in a part of the concave portion so that the direction of the washing water is guided toward the dishware. The method according to claim 1,
Wherein a pattern for switching the direction of the washing water is provided on one surface of the switching unit in contact with the washing water. The method according to claim 1,
Wherein at least a part of the switching unit is provided with at least one slit for preventing accumulation of contaminants in the switching unit. The method according to claim 1,
Wherein an opening for preventing accumulation of contaminants is formed on the lower surface of the guide member. The method according to claim 1,
Wherein the movement of the switching unit in the washing tub is moved by the spraying pressure of washing water sprayed from the spraying unit. The method according to claim 1,
Further comprising a power generating device that drives the switching unit to move the switching unit in the cleaning tank. 13. The method of claim 12,
Further comprising a pulley or gear coupled with the power generating device, wherein the pulley and the switching unit are connected through a connecting member. The method according to claim 1,
Wherein the guide member is provided on the inner side of the washing tub to guide movement of the switching unit. The method according to claim 1,
Wherein the guide member is located inside the washing tub and is coupled to the switching unit to support a central portion of the switching unit. The method according to claim 1,
Wherein the guide member is provided on at least a portion of the tableware basket and is formed without additional components. The method according to claim 1,
Wherein the guide member is provided on at least a portion of the inner surface of the washing tub and is formed without additional components. The method according to claim 1,
Wherein the switching unit is coupled to the guide member so as to be rotatable at a predetermined angle with respect to the guide member. The method according to claim 1,
Wherein the spray unit is fixed to at least one of the inner wall surfaces of the washing tub. The method according to claim 1,
Wherein the spray unit comprises at least one head group consisting of at least one head for spraying wash water, wherein each head group is optionally capable of spraying wash water. 21. The method of claim 20,
Wherein the jetting of the washing water in the head group is performed such that at least one element of the jetting pressure, the temperature of the washing water, and the jetting time is different for each of the head groups. 21. The method of claim 20,
Wherein the at least one head is disposed to be inclined upward in order to spray the washing water over a predetermined distance. 21. The method of claim 20,
Wherein the ejection unit further comprises a channel switching valve for selectively controlling the jetting of the washing water of the head group. 5. The method of claim 4,
Wherein the concave portion includes a first stepped portion and a second stepped portion that are provided so as to be stepped with respect to each other. 5. The method of claim 4,
Wherein the ejection unit includes at least one head for ejecting wash water, the recess including at least one area corresponding to each of the heads, the area having different curvatures so that the wash water is discharged at different angles Wherein the dishwasher is a dishwasher. The method according to claim 1,
Further comprising a direction switching member for switching the moving direction so that the switching unit moves in the first direction and in the second direction different from the first direction. 1. A dishwasher including a washing tub for washing dishes and a dish basket placed inside the washing tub for storing dishes,
At least one spraying unit located on at least one of the upper side and the lower side of the tableware basin and spraying wash water in a first direction;
A switching unit for switching the direction of the washing water so that the washing water sprayed from the spray unit can switch the flow path in the second direction which is the direction of the tableware basket;
Wherein the dishwasher comprises: 28. The method of claim 27,
Wherein the switching unit comprises concave depressed portions for switching the direction of the wash water from the first direction to the second direction. 28. The method of claim 27,
Wherein the switching unit includes a driving unit for driving the switching unit to move between a front and a rear or a left and right or upper and lower surfaces of the washing tub. 30. The method of claim 29,
Wherein the drive unit includes at least one guide member coupled with the switching unit to guide movement of the switching unit, a power generator for driving the switching unit, a pulley or gear coupled to the power generator, And a connecting member for connecting the pulley or the gear and the switching unit. 31. The method of claim 30,
Wherein when the switching unit moves in the direction of the injection unit, it is moved by the power generating device, and when the switching unit moves away from the injection unit, the switching unit moves by the water pressure of the washing water sprayed on the spraying unit . 29. The method of claim 28,
Wherein the injection unit is arranged to be opposed to each other inside the washing tank, and the switching unit includes a plurality of recesses arranged to face the respective injection units. 29. The method of claim 28,
Wherein the switching unit is provided in an upward direction of the tableware basket and the recess is arranged to face the tableware basket to switch the flow path of the washing water in the direction of the tableware basket. 28. The method of claim 27,
Wherein the switching unit is provided along one surface shape of the dish basket close to the switching unit, and the jetting unit is arranged to correspond to the shape of the switching unit.

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