dishwasher

Abstract

To provide a dishwasher that allows for a thinner washing nozzle. [Solution] The dishwasher 1 comprises a washing tank 50 for containing items to be washed, and a washing nozzle 20 for spraying washing water into the washing tank 50. The washing tank 50 is provided with a support portion that rotatably supports the washing nozzle 20, and the washing nozzle 20 is provided with a housing portion that houses at least a part of the support portion inside, and a contact portion 28 that abuts against the support portion is provided inside the housing portion, so the washing nozzle 20 is supported by the support portion via the contact portion 28.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a dishwasher.

BACKGROUND ART

[0002] Patent Document 1 discloses a dishwasher that can achieve high cleaning performance while maintaining the accommodation capacity of objects to be cleaned such as tableware. This dishwasher includes a tableware basket on which objects to be cleaned are placed, a cleaning tank in which the tableware basket is accommodated, a cleaning pump that pressure-feeds cleaning water, and a cleaning nozzle that sprays the cleaning water. The cleaning nozzle has a rotating shaft into which cleaning water flows, a plurality of tower flow paths each having a tower injection port, and a water distribution mechanism that switches the supply of cleaning water to the plurality of tower flow paths. The water distribution mechanism is disposed above the rotating shaft. Thereby, it is not necessary to arrange the tableware basket provided in the cleaning tank at a high position.

PRIOR ART DOCUMENTS

PATENT DOCUMENTS

[0003]

PATENT DOCUMENT 1

SUMMARY OF THE INVENTION

PROBLEMS TO BE SOLVED BY THE INVENTION

[0004] The present disclosure provides a dishwasher that can achieve a thinner profile of the cleaning nozzle.

MEANS FOR SOLVING THE PROBLEMS

[0005] The present disclosure is a dishwasher including a cleaning tank that accommodates objects to be cleaned, and a cleaning nozzle that sprays cleaning water into the interior of the cleaning tank. The cleaning tank is provided with a support portion that rotatably supports the cleaning nozzle, the cleaning nozzle is provided with an accommodation portion that accommodates at least a part of the support portion inside, a contact portion that abuts against the support portion is provided inside the accommodation portion, and the cleaning nozzle is supported by the support portion via the contact portion.

[0006] This disclosure relates to a dishwasher comprising a washing tank for containing objects to be washed, and a washing nozzle for spraying washing water into the washing tank, wherein the washing nozzle comprises a first nozzle portion rotatably mounted relative to the washing tank, and a second nozzle portion rotatably attached to the first nozzle portion, and the first nozzle portion is provided with a holding portion that is inserted through an insertion hole that connects the inside and outside of the second nozzle portion and is positioned inside the second nozzle portion to hold the second nozzle portion.

[0007] This disclosure relates to a dishwasher comprising a washing tank for containing objects to be washed, and a washing nozzle for spraying washing water into the washing tank, wherein the washing nozzle comprises a first nozzle portion rotatably mounted relative to the washing tank, and a second nozzle portion rotatably attached to the first nozzle portion, the second nozzle portion being provided with a through hole communicating with the internal space of the first nozzle portion and through which the rotation shaft of the second nozzle portion provided in the first nozzle portion is inserted, an opening for spraying washing water from the inside to the outside of the second nozzle portion, and a partition portion that partitions the internal space of the second nozzle portion and connects the through hole and the opening.

[0008] This disclosure relates to a dishwasher comprising a washing tank for containing items to be washed, and a washing nozzle for spraying washing water into the washing tank, wherein the washing nozzle is provided with an opening for spraying washing water from the inside to the outside of the washing nozzle, and at least some of the edges of the opening are provided with inclined surfaces that are sloped toward a direction toward approaching each other as they move from the inside to the outside of the washing nozzle. [Effects of the Invention]

[0009] According to this disclosure, it is possible to make the cleaning nozzle thinner. [Brief explanation of the drawing]

[0010] [Figure 1] Schematic side view of a dishwasher according to an embodiment of the present disclosure [Figure 2] Longitudinal cross-sectional view of the cleaning tank, cleaning pump, and cleaning nozzle. [Figure 3] Perspective view of the cleaning nozzle from above. [Figure 4] Perspective view of the cleaning nozzle from below. [Figure 5] Perspective view showing a cross-section of the supply pipe and the cleaning nozzle. [Figure 6] Perspective view of the second injection opening [Figure 7] Perspective view showing a cross-section of the cleaning nozzle at the second injection opening. [Figure 8] Perspective view of the second injection opening [Figure 9] Perspective view of the second arm [Figure 10] Exploded perspective view of the second arm section [Figure 11] Plan view of the second nozzle section [Figure 12] Longitudinal cross-section of the cleaning nozzle [Modes for carrying out the invention]

[0011] (Knowledge and other information that formed the basis of this disclosure) At the time the inventors conceived of this disclosure, there was a technology for a dishwasher that included a washing tank for containing items to be washed and a washing nozzle for spraying washing water into the washing tank, and the items to be washed were washed by the washing water sprayed from the washing nozzle.

[0012] However, when attempting to make dishwashers thinner, the inventors discovered a problem: depending on the size of the washing nozzles, the space available inside the washing tank for accommodating items may become smaller. To solve this problem, the subject of this disclosure was established. Therefore, this disclosure provides a dishwasher that can achieve a thinner washing nozzle.

[0013] Hereinafter, embodiments will be described in detail with reference to the drawings. However, unnecessarily detailed descriptions may be omitted in some cases. For example, detailed descriptions of well-known matters or redundant descriptions of substantially the same configurations may be omitted. This is to avoid the following description from becoming unnecessarily redundant and to facilitate understanding by those skilled in the art. It should be noted that the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter recited in the claims.

[0014] (Embodiment 1) Hereinafter, Embodiment 1 will be described with reference to FIG. 1 to FIG. 12. In the description, unless otherwise specified, directional references such as front, back, left, right, up and down are the same as the directions relative to the dishwasher 1 when it is installed and in use. Further, the reference sign LH shown in each drawing indicates the left side of the dishwasher 1 when the dishwasher 1 is installed and used, the reference sign FR indicates the front side of the dishwasher 1, and the reference sign UP indicates the upper side of the dishwasher 1. In the installed state of the dishwasher 1, the vertical direction coincides with the gravitational vertical direction, and the front-back direction and the left-right direction coincide with the horizontal direction. [1-1. Configuration] [1-1-1. Configuration of Dishwasher] FIG. 1 is a schematic side view of the dishwasher 1 according to Embodiment 1. The dishwasher 1 is, for example, a pull-out built-in dishwasher installed in a system kitchen or the like, and includes a wash tank 50 provided to be capable of being pulled out. Hereinafter, the direction in which the wash tank 50 is pulled out is defined as the front direction, and the direction on the left hand side of a person viewing the dishwasher 1 from the front is defined as the left direction. The dishwasher 1 has a housing 10 installed inside a system kitchen or the like. The housing 10 is a box-shaped member that opens forward. The opening of the housing 10 is closed from the front by a door body 11.

[0015] The wash tank 50 is accommodated inside the housing 10. The wash tank 50 is a box-shaped structural body formed with an opening 51 facing upward. The cleaning tank 50 has a bottom portion 52 that forms the bottom surface of the cleaning tank 50, a front portion 53 that rises upward from the front end of the bottom portion 52, a rear portion 54 that rises upward from the rear end of the bottom portion 52, and a pair of side portions 55 that rise upward from both the left and right ends of the bottom portion 52. The front portion 53 and the rear portion 54 are substantially perpendicular to the front-rear direction and substantially parallel to the left-right direction. The pair of left and right side portions 55 are each substantially perpendicular to the left-right direction and substantially parallel to the left-right direction. A washing basket 30 is provided inside the washing tank 50 for placing items to be washed, such as plates and cups. The washing tank 50 is connected to the door 11.

[0016] A first rail 41 extending in the front-to-back direction is provided on the left-to-right outer surface of the cleaning tank 50. The cleaning tank 50 is supported so as to be movable in the front-to-back direction relative to the housing 10 by the first rail 41 being supported by a second rail 13 provided on the inner surface of the housing 10.

[0017] As shown in Figure 1, when the washing tank 50 is moved backward and pushed into the housing 10, the door 11 closes the opening of the housing 10. The washing tank 50 is pulled forward through the opening of the housing 10 to the outside, such as a sink. When the washing tank 50 is pulled forward, objects to be washed can be put into and taken out of the washing tank 50 through the opening 51.

[0018] When the cleaning tank 50 is housed in the housing 10, the opening 51 of the cleaning tank 50 is closed by a lid 15 provided on the housing 10. An annular rubber lid-side contact portion 16 is attached to the lower surface of the lid 15. The lid-side contact portion 16 seals the cleaning tank 50 by contacting the area around the opening 51. The lid 15 is mounted on the housing 10 so as to be able to move up and down via a parallel link mechanism 17 or the like. The lid 15 is configured to move downward to close the opening 51 when the cleaning tank 50 is housed in the housing 10, and to move upward to avoid interfering with the cleaning tank 50 when the cleaning tank 50 is pulled out.

[0019] Inside the cleaning tank 50, the required amount of cleaning water, such as tap water, is supplied from a branch faucet on the kitchen system via a water supply route (not shown) that includes a water supply hose, water supply pump, and water supply valve. The cleaning water supplied to the cleaning tank 50 circulates within the tank via the cleaning pump 43 and cleaning nozzle 20.

[0020] The cleaning pump 43 is a pump that sends cleaning water accumulated at the bottom of the cleaning tank 50 to the cleaning nozzle 20. The cleaning pump 43 is located on the outside lower part of the cleaning tank 50. The cleaning nozzle 20 is located inside the cleaning tank 50, below the cleaning basket 30, and is positioned near the center of the cleaning tank 50 in a plan view. The cleaning nozzle 20 is configured to rotate on an axis in the vertical direction by the power of the motor or the recoil when the cleaning water is sprayed out. The cleaning nozzle 20 cleans the objects to be cleaned placed in the cleaning basket 30 by rotating while spraying cleaning water. In addition, a heater 47 is provided inside the cleaning tank 50. The heater 47 promotes the cleaning of the objects to be cleaned by heating the cleaning water accumulated at the bottom of the cleaning tank 50.

[0021] The dishwasher 1 is equipped with a drainage route (not shown) for draining washing water from the washing tank 50. The drainage route consists of a drain pump and a drain hose connected to a kitchen drainpipe or the like. When the washing and rinsing of the items to be washed in the dishwasher 1 is complete, the drain pump is activated and the washing water is drained to the outside through the drain hose.

[0022] [1-1-2. Configuration of the cleaning nozzle] Figure 2 is a longitudinal cross-sectional view of the cleaning tank 50, the cleaning pump 43, and the cleaning nozzle 20. Figure 2 shows a cross-section in a plane parallel to the longitudinal direction of the first nozzle section 22, perpendicular to the left-right direction, and intersecting the supply pipe section 56 and the tower nozzle section 24. For the sake of explanation, Figure 2 shows the supply pipe section 56 and the contact section 28 spaced apart. In Figure 2, the bottom surface 52 of the cleaning tank 50 is shown, with other parts omitted.

[0023] As shown in Figure 2, a supply pipe section 56 is provided on the bottom surface 52 of the cleaning tank 50. In this embodiment, the supply pipe section 56 is integrally provided with the bottom surface 52 and is a tubular section that rises substantially vertically upward from the bottom surface 52. The inside of the supply pipe section 56 has a lower end that communicates with the space below the cleaning tank 50. A cleaning pump 43 is connected to the lower end of the supply pipe section 56. As a result, the cleaning water sent from the cleaning pump 43 is sent into the inside of the cleaning tank 50 via the supply pipe section 56. In other words, the supply pipe section 56 has a flow path through which cleaning water flows. An upper end surface 57 is formed at the upper end of the supply pipe section 56, which is an annular flat surface in a plan view and faces the upper end in the vertical direction. The supply pipe section 56 corresponds to the "support section" in this disclosure.

[0024] Figure 3 is a perspective view of the cleaning nozzle 20 from above. Figure 4 is a perspective view of the cleaning nozzle 20 from below. As shown in Figure 2, the cleaning nozzle 20 is attached to the cleaning tank 50 via a supply pipe 56. As shown in Figures 3 and 4, the cleaning nozzle 20 includes a first nozzle section 22. The first nozzle section 22 includes a tower nozzle section 24. The tower nozzle section 24 is formed in a long cylindrical shape with a predetermined length. Inside the tower nozzle section 24, there is a space that extends in the longitudinal direction of the tower nozzle section 24. The inner diameter of the tower nozzle section 24 is formed to be larger than the outer diameter of the supply pipe 56. The tower nozzle section 24 corresponds to the "housing section" in this disclosure.

[0025] One end of the tower nozzle section 24 in the longitudinal direction is closed by the water distribution section 26, and the other end is provided with a through opening 25, which is an opening that connects the inside of the tower nozzle section 24 to the outside of the tower nozzle section 24.

[0026] A contact portion 28 is provided inside the tower nozzle portion 24. The contact portion 28 is located in the tower nozzle portion 24 at a position closer to the water distribution portion 26 than to the insertion opening 25, and is formed in a cylindrical shape with substantially the same central axis as the tower nozzle portion 24. The contact portion 28 extends from the water distribution portion 26 side toward the insertion opening 25 side. The inner diameter of the contact portion 28 is formed to be smaller than the outer diameter of the supply pipe portion 56, and the outer diameter of the contact portion 28 is formed to be larger than the inner diameter of the supply pipe portion 56. At the lower end of the contact portion 28, a contact surface 21 is formed, which is an annular flat surface in a plan view and faces the vertical direction.

[0027] The distance between the lower end of the contact portion 28 and the insertion opening 25 is formed to be shorter than the longitudinal length of the supply pipe portion 56 located on the inside of the washing tank 50. This prevents tilting and rattling of the washing nozzle 20 when the supply pipe portion 56 is housed inside the tower nozzle portion 24 in the dishwasher 1. In addition, by housing the supply pipe portion 56 inside the tower nozzle portion 24 in the dishwasher 1, an increase in the height dimension of the structure related to fixing the washing nozzle 20 is suppressed. As a result, interference of the washing nozzle 20 with the internal structure of the washing tank 50, such as the washing basket 30, is suppressed in the dishwasher 1, and a decrease in the capacity of the washing tank 50 can be suppressed.

[0028] Figure 5 is a perspective view showing a cross-section of the supply pipe section 56 and the cleaning nozzle 20. The cross-section shown in Figure 5 is substantially the same as the cross-section shown in Figure 2. As shown in Figure 5, the cleaning nozzle 20 is attached to the cleaning tank 50 by inserting the supply pipe section 56 into the tower nozzle section 24. When the supply pipe section 56 is inserted into the tower nozzle section 24 through the insertion opening 25, the upper end surface 57 located at the tip of the supply pipe section 56 comes into contact with the contact surface 21 located at the lower end of the contact section 28. As a result, the cleaning nozzle 20 is supported so as to be rotatable with the supply pipe section 56 as the axis of rotation.

[0029] The connection point between the washing nozzle 20 and the supply pipe section 56 is positioned above the insertion opening 25 located at the lower end of the washing nozzle 20, and at a predetermined distance. This prevents the washing nozzle 20 from coming out of the supply pipe section 56 in the dishwasher 1. In this way, the connection point between the washing nozzle 20 and the supply pipe section 56 is housed inside the washing nozzle 20. As a result, in the dishwasher 1, the washing nozzle 20 and the supply pipe section 56 can be connected without forming a structure to connect them to each other in the vertical direction of the washing tank 50. Therefore, the washing nozzle 20 can suppress an increase in the dimensions of the structure associated with the installation of the washing nozzle 20 inside the washing tank 50, and can suppress a reduction in the internal space of the washing tank 50.

[0030] The tip of the supply pipe section 56 and the lower end of the contact section 28 are in contact without any gaps along the entire circumference. As a result, the flow path, which is the internal space of the supply pipe section 56, the internal space of the contact section 28, and the internal space of the tower nozzle section 24, which is located above the contact section 28, are connected. When the cleaning nozzle 20 rotates, the lower end of the contact portion 28 and the tip of the supply pipe portion 56 each become sliding surfaces. Since the tip of the supply pipe portion 56 is provided spaced apart from the bottom surface portion 52, it is possible to easily form a horizontal surface in the vertical direction. The cleaning water supplied from the cleaning pump 43 is sent into the interior of the contact portion 28 via the supply pipe portion 56.

[0031] As shown in Figure 5, multiple ribs 29 are provided on the inner surface of the contact portion 28. As shown in Figure 2, the contact portion 28 is located below the water distribution portion 26, and the valve body 42 is housed in the space from the inside of the contact portion 28 to the inside of the water distribution portion 26. The valve body 42 is provided so as to be movable vertically within the space between the contact portion 28 and the water distribution portion 26. Multiple water distribution openings 27 are provided on the upper surface of the water distribution section 26, which communicate with the space inside the water distribution section 26.

[0032] When cleaning water flows in from the supply pipe section 56, the valve body 42 rises towards the water distribution section 26 due to the water pressure. When the inflow of cleaning water stops, the valve body 42 descends and is supported by the contact section 28. In this case, the vertical movement of the valve body 42 is guided by multiple ribs 29. As the valve body 42 moves up and down, it rotates horizontally. In this case, the valve body 42 closes some of the water distribution openings 27 and opens others. As a result, in the cleaning nozzle 20, the water distribution openings 27 that are opened are switched as the valve body 42 moves, and cleaning water is sprayed alternately from each of the water distribution openings 27.

[0033] [1-1-3. Configuration of the first nozzle section] As shown in Figures 2 to 4, the first nozzle section 22 is provided with a first arm section 60 and a second arm section 70. The first arm section 60 and the second arm section 70 are formed as elongated sections that extend in opposite directions from the lower end of the tower nozzle section 24. The first arm section 60 and the second arm section 70 have a flattened shape with surfaces that intersect in the vertical direction. The lower surfaces of the first arm section 60 and the second arm section 70 are located on substantially the same plane as the insertion opening 25. As a result, when the cleaning nozzle 20 is supported by the supply pipe section 56, contact between the lower surfaces of the first arm section 60 and the second arm section 70 and the bottom surface section 52 is suppressed.

[0034] The first arm portion 60 is formed by connecting a plate-shaped upper portion 62 that forms the upper surface and a plate-shaped lower portion 64 that forms the lower surface. In the upper portion 62, the upper surface of the first arm portion 60 is formed with a plate thickness of, for example, about 2.0 mm. Inside the first arm portion 60, there is a space that communicates with the space inside the tower nozzle portion 24.

[0035] As shown in Figure 3, the upper surface 62 of the first arm portion 60 is provided with a first injection opening 61 and a second injection opening 63, which are through holes that connect the inside and outside of the first arm portion 60, along the thickness direction of the upper surface 62. In the longitudinal direction of the first arm portion 60, the first injection opening 61 is located at the end opposite to the tower nozzle portion 24, and the second injection opening 63 is located closer to the tower nozzle portion 24 than the first injection opening 61. The first injection opening 61 and the second injection opening 63 correspond to the “openings” in this disclosure.

[0036] The first injection opening 61 and the second injection opening 63 are both formed as rectangular elongated holes in a plan view. Both the first injection opening 61 and the second injection opening 63 are positioned on substantially the same plane as the upper surface of the first arm portion 60.

[0037] On the upper surface 62, an inclined surface 65 is provided on the edge of the first injection opening 61, specifically on the edge of the first arm portion 60 that is opposite to the tower nozzle portion 24. The inclined surface 65 slopes along the thickness direction of the upper surface 62, from the inside to the outside of the first arm portion 60, from the tower nozzle portion 24 side towards the end of the first arm portion 60 that is opposite to the tower nozzle portion 24. As a result, the cleaning nozzle 20 can spray the cleaning water that is sent from the inside of the first arm portion 60 to the outside via the first injection opening 61 in a direction that is further away from the cleaning nozzle 20.

[0038] Figure 6 is a perspective view of the second injection opening 63. As shown in Figure 6, the second injection opening 63 is formed as a rectangular elongated hole in plan view. The upper surface 62 is provided with a pair of short edge portions 66 that form the short side located in the longitudinal direction of the second injection opening 63 in plan view, and a pair of long edge portions 68 that form the long side located in a direction intersecting the longitudinal direction. Each of the short edge portions 66 is an edge that extends intersecting the direction in which the second injection opening 63 extends in plan view. In other words, each of the short edge portions 66 is an edge that extends along the short direction of the second injection opening 63. Each of the long edge portions 68 is an edge that extends along the direction in which the second injection opening 63 extends, that is, along the longitudinal direction of the second injection opening 63.

[0039] Figure 7 is a longitudinal cross-sectional view of the second injection opening 63. Figure 7 shows a cross-section of the upper surface portion 62 in a plane that is parallel to the vertical direction and the longitudinal direction of the second injection opening 63, and intersects the second injection opening 63. In Figure 7, the flow of the cleaning water is indicated by arrow W. As shown in Figure 7, on the upper surface 62, each of the pair of short edge portions 66 is provided with an inclined surface 69. Each of the inclined surfaces 69 is inclined in a direction that brings them closer together as they move from the inside to the outside of the first arm portion 60 along the thickness direction of the upper surface 62. In other words, each of the inclined surfaces 69 is inclined towards the approximate center of the longitudinal direction of the second injection opening 63 as they move from the inside to the outside of the first arm portion 60 along the thickness direction of the upper surface 62. In this embodiment, each of the inclined surfaces 69 is provided to form an acute angle of 30 to 60 degrees with respect to the upper surface of the first arm portion 60.

[0040] When the cleaning water flowing inside the first arm portion 60 reaches a position where it overlaps with the second injection opening 63, it is blown out of the first arm portion 60 through the second injection opening 63. In this case, at least a portion of the cleaning water passing through the second injection opening 63 flows along each of the inclined surfaces 69, and is directed towards the approximate center of the second injection opening 63 in the longitudinal direction. As a result, the cleaning water flowing along each of the inclined surfaces 69 collides with each other at some point inside the second injection opening 63. After this, the cleaning water is ejected from the second injection opening 63.

[0041] Figure 8 is a perspective view of the second injection opening 63. In Figure 8, the flow of the cleaning water is indicated by arrow W. As shown in Figure 8, the cleaning water sprayed from the second injection opening 63 diffuses outward from the second injection opening 63 along the longitudinal direction of the second injection opening 63, for example, in a fan shape. Therefore, the cleaning nozzle 20 can diffuse the cleaning water that is sent from the inside of the first arm portion 60 to the outside through the second injection opening 63 over a wider area.

[0042] In this way, by providing the inclined surface 69 in the washing nozzle 20, the washing water sprayed from the washing nozzle 20 can be diffused over a wider area without the need for a structure that protrudes from the upper surface of the first arm portion 60. Therefore, in the dishwasher 1, it is possible to suppress an increase in the dimensions of the washing nozzle 20 inside the washing tank 50, and to suppress a decrease in the space inside the washing tank 50. The second injection opening 63 may have any shape as long as it is elongated in plan view, such as an elliptical shape.

[0043] As shown in Figures 2 to 4, the second arm portion 70 is formed to be shorter in the longitudinal direction than the first arm portion 60. The second arm portion 70 is formed to be thinner in the vertical direction, in other words, thinner in thickness than the first arm portion 60.

[0044] The second arm portion 70 is formed by connecting a plate-shaped upper portion 72 that forms the upper surface and a plate-shaped lower portion 74 that forms the lower surface. In this embodiment, the tower nozzle portion 24, the upper portion 62, and the upper portion 72 are formed integrally, the lower portion 64, and the lower portion 74 are formed integrally, and the insertion opening 25 is provided between the lower portion 64 and the lower portion 74 in a plan view. A space is provided inside the second arm section 70 that communicates with the space inside the tower nozzle section 24.

[0045] Figure 9 is a perspective view of the second arm portion 70. As shown in Figures 3 and 9, a connecting shaft portion 76 is provided at the tip of the second arm portion 70. The connecting shaft portion 76 is provided on the upper surface of the tip of the second arm portion 70. The connecting shaft portion 76 includes a communication hole 77, which is a through hole that penetrates in the thickness direction of the plate, a covering portion 78 that covers the communication hole 77, and a retaining piece 84 provided on the lower surface portion 74. The retaining piece 84 corresponds to the "retaining portion" in this disclosure.

[0046] Figure 10 is an exploded perspective view of the second arm section 70. As shown in Figure 10, the communication hole 77 is formed in a substantially circular shape in plan view. The covering portion 78 comprises a plurality of support pieces 80 that protrude upward from the edge of the communication hole 77, and a covering surface portion 82 supported by the support pieces 80. The support pieces 80 are arranged at predetermined intervals from each other in the circumferential direction of the communication hole 77. The covering surface portion 82 is positioned to overlap the communication hole 77 in plan view and is formed in a disc shape with substantially the same diameter as the communication hole 77. The covering portion 78 is provided with a plurality of outflow holes 79, which are formed by being surrounded by the edges of the communication holes 77, each of the support pieces 80, and the covering surface portion 82. Each of the outflow holes 79 is a horizontal hole that opens horizontally and communicates with the space inside the second arm portion 70 via the communication holes 77.

[0047] As shown in Figures 9 and 10, a plurality of retaining pieces 84 are provided inside the communication hole 77. Each of the retaining pieces 84 is formed in a columnar shape that rises upward from the upper surface of the lower surface portion 74, and is inserted into the communication hole 77 by connecting the upper surface portion 72 and the lower surface portion 74. The tip of each retaining piece 84 is positioned between the communication hole 77 and the covering surface portion 82 in the vertical direction. Each tip of the retaining piece 84 is provided with a claw-shaped engaging piece 86. The engaging pieces 86 protrude horizontally outward from the communication hole 77. At least a portion of each engaging piece 86 is positioned inside the outflow hole 79.

[0048] [1-1-4. Configuration of the second nozzle section] As shown in Figures 2 to 4, a second nozzle portion 90 is attached to the second arm portion 70. The second nozzle portion 90 has a flat shape with surfaces that intersect in the vertical direction. In this embodiment, the second nozzle portion 90 is formed in an elongated shape that extends in a direction that intersects in the vertical direction.

[0049] Figure 11 is a plan view of the second nozzle section 90. In Figure 11, the flow of the cleaning water is indicated by arrow W. As shown in Figure 11, in this embodiment, the second nozzle portion 90 has a substantially rectangular outer shape in plan view. The second nozzle portion 90 comprises a plate-shaped upper portion 92 that forms the upper surface, a plate-shaped lower portion 94 that forms the lower surface, and an outer peripheral portion 99 that forms the outer peripheral surface of the second nozzle portion 90 in plan view. The upper portion 92 and the lower portion 94 are connected to each other by the outer peripheral portion 99 on the outer periphery of the second nozzle portion 90. Inside the second nozzle portion 90, there is a space enclosed from above and below by the upper portion 92, the lower portion 94, and the outer peripheral portion 99. When the second nozzle portion 90 is attached to the second arm portion 70, the upper surface portion 92 is formed with a thickness such that it lies on substantially the same plane as the upper surface portion 62 of the first arm portion 60.

[0050] The second nozzle portion 90 is provided with a through-hole 91 located approximately in the center when viewed from above, extending from the upper surface portion 92 to the lower surface portion 94 and penetrating in the thickness direction of the second nozzle portion 90. When viewed from above, the through-hole 91 is formed in a circular shape with approximately the same diameter as the communication hole 77 and the covering surface portion 82. The second nozzle portion 90 is provided with a through hole 91, thereby providing an inlet 93 that connects the inside and outside of the second nozzle portion 90 through the through hole 91, extending along the entire circumferential direction of the through hole 91. The inlet 93 is a horizontal hole that is surrounded from above and below by an upper surface portion 92 and a lower surface portion 94 and opens horizontally.

[0051] Figure 12 is a longitudinal cross-sectional view of the cleaning nozzle 20. Figure 12 shows a cross-section of the second arm portion 70 in a plane parallel to the longitudinal direction and vertical direction, and intersecting the connecting shaft portion 76. The second nozzle portion 90 is connected to the second arm portion 70 by inserting the connecting shaft portion 76 through the insertion hole 91 and fitting it into place. As shown in Figure 12, each of the support pieces 80 of the connecting shaft portion 76, the covering surface portion 82, and each of the retaining pieces 84 are inserted into the inside of the insertion hole 91.

[0052] When the connecting shaft portion 76 is inserted through the insertion hole 91, the upper surface of the second arm portion 70 and the lower surface of the second nozzle portion 90 come into contact. In this case, the upper surface of the covering surface portion 82 becomes substantially flush with the upper surface of the second nozzle portion 90. As a result, the insertion hole 91 is closed by the upper surface of the second arm portion 70 and the covering surface portion 82, and the outflow hole 79 and the inflow hole 93 are separated from the outside of the second arm portion 70 and the second nozzle portion 90.

[0053] When the connecting shaft portion 76 is inserted through the insertion hole 91, each of the outlet holes 79 is positioned to overlap with the inlet hole 93 in the horizontal direction. This connects the internal space of the second arm portion 70 with the internal space of the second nozzle portion 90. The cleaning water supplied to the second arm portion 70 flows from the outlet hole 79 to the inlet hole 93 and is supplied to the interior of the second nozzle portion 90.

[0054] When each of the retaining pieces 84 is inserted into the insertion hole 91, each of the engaging pieces 86 engages with the edge of the lower surface portion 94 formed by the insertion hole 91. As a result, the second nozzle portion 90 is connected to the second arm portion 70 in a state in which it can rotate with respect to the connecting shaft portion 76 as the axis of rotation. When the second nozzle section 90 and the second arm section 70 are connected, each of the retaining pieces 84 is positioned inside the insertion hole 91, in other words, inside each of the outflow holes 79 and the inflow hole 93.

[0055] As a result, in the dishwasher 1, the structure connecting the second nozzle section 90 and the second arm section 70 is housed inside the second nozzle section 90 and does not protrude outward from the second nozzle section 90 in the thickness direction of the second nozzle section 90. In addition, the structure connecting the second nozzle section 90 and the second arm section 70 is located within the flow path of the washing nozzle 20. Therefore, in the washing nozzle 20, the second nozzle section 90 and the second arm section 70 can be connected to each other without forming a connecting structure between them in the vertical direction of the washing nozzle 20. Furthermore, in the washing nozzle 20, it is possible to suppress an increase in the dimensions of the structure associated with the installation of the washing nozzle 20 inside the washing tank 50, and to suppress a decrease in the space inside the washing tank 50.

[0056] As shown in Figure 11, the second nozzle portion 90 is provided with a through-hole portion 95 at a position spaced apart from the insertion hole 91. The through-hole portion 95 is a through-hole that penetrates the second nozzle portion 90 in the thickness direction. The through-hole portion 95 is formed by punching a hole at a predetermined location in the second nozzle portion 90 in a plan view. The inner circumference of the through-hole portion 95 is provided with a wall portion 96 that is continuous with the upper and lower surfaces of the second nozzle portion 90, extending over the entire circumferential direction. As a result, the second nozzle portion 90 forms an annular portion 100 surrounding the through-hole portion 95 when the through-hole portion 95 is formed. Inside the annular portion 100, a space is provided that communicates with the inlet hole 93 and serves as a flow path for cleaning water. In this embodiment, two through-holes 95 are provided side by side along the longitudinal direction, flanking the insertion hole 91. Therefore, the second nozzle portion 90 has two annular portions 100 provided side by side along the longitudinal direction, flanking the insertion hole 91.

[0057] The second nozzle section 90 is provided with a plurality of partition sections 98. Two partition sections 98 are arranged side by side in a direction perpendicular to the longitudinal direction of the second nozzle section 90, with the insertion hole 91 in between. The partition sections 98 are integrally formed with the outer peripheral surface section 99 and extend along the direction perpendicular to the longitudinal direction of the second nozzle section 90 to a position approaching the insertion hole 91.

[0058] In the longitudinal direction of the second nozzle portion 90, second nozzle openings 97, which are through holes penetrating the plate thickness direction of the upper surface portion 92, are provided at both ends of the upper surface portion 92. The second nozzle openings 97 are formed as rectangular elongated holes in a plan view. Each of the second nozzle openings 97 is located in the annular portion 100, on the opposite side of the insertion hole 91, with the through hole portion 95 in between. In a plan view of the second nozzle portion 90, each of the second nozzle openings 97 extends along the longitudinal direction of the second nozzle portion 90 and is located on a virtual line I passing through the insertion hole 91.

[0059] The outer shape of the second nozzle portion 90 and the flow path formed inside it are formed to be point-symmetric in a plan view with respect to the insertion hole 91. In this embodiment, the second nozzle portion 90 and the flow path formed inside it are formed line-symmetric in a plan view with respect to the imaginary line I as the line of symmetry.

[0060] When cleaning water is supplied from the second arm portion 70 through the insertion hole 91 into the interior of the second nozzle portion 90, the partition portion 98 distributes and flows the cleaning water toward each of the two ends in the longitudinal direction. As a result, the cleaning water flows into each of the annular portions 100. The cleaning water that has flowed into the annular portion 100 is distributed and flows toward each of the two channels branched by the wall portion 96 and the outer peripheral surface portion 99, and toward the ends in the longitudinal direction of the second nozzle portion 90. At the ends in the longitudinal direction of the second nozzle portion 90, the cleaning water flowing in each of the two channels merges approximately directly below the second nozzle opening 97. In this case, the cleaning water flowing in each of the two channels flows in opposite directions along the direction intersecting the longitudinal direction of the second nozzle portion 90, and therefore collides with each other approximately directly below the second nozzle opening 97. As a result, the cleaning water flowing inside the second nozzle section 90 is blown out to the outside from each of the second nozzle openings 97 by the force of the water colliding with each other.

[0061] Thus, in the second nozzle section 90, the internal space is partitioned by the partition section 98 and the wall section 96, forming a flow path for the washing water. As a result, in the second nozzle section 90, the area in the internal space where the washing water can flow is restricted, and the flow of washing water from the inlet hole 93 to the second nozzle opening 97 can be controlled. Therefore, the second nozzle section 90 can spray washing water to the outside in a balanced manner, and the rotation of the second nozzle section 90 due to the water pressure accompanying the flow of washing water can be stabilized. In addition, in the dishwasher 1, when the operation related to dishwashing is stopped, the accumulation of a large amount of washing water in the internal space of the second nozzle section 90 is suppressed.

[0062] [1-2. Operation] The operation of the dishwasher 1, configured as described above, will be explained below. In dishwasher 1, when operation is started, washing water is sent from washing pump 43 to the first nozzle section 22 via supply pipe section 56. In the first nozzle section 22, when cleaning water flows into the tower nozzle section 24 from the supply pipe section 56, the internal valve body 42 is subjected to water pressure and moves vertically and rotates horizontally. As a result, cleaning water is alternately sprayed into the cleaning tank 50 from each of the water distribution openings 27 in the cleaning nozzle 20. In the first nozzle section 22, a portion of the cleaning water that flows into the tower nozzle section 24 is distributed to the first arm section 60 and the second arm section 70, respectively. The cleaning water that flows into the space inside the first arm section 60 is sprayed into the cleaning tank 50 from the first injection opening 61 and the second injection opening 63. The cleaning water that flows into the internal space of the second arm section 70 flows into the internal space of the second nozzle section 90 through the insertion hole 91 and is sprayed into the cleaning tank 50 from each of the second nozzle openings 97. In the cleaning nozzle 20, cleaning water is sprayed from the first injection opening 61, the second injection opening 63, and the second nozzle opening 97, causing the first nozzle section 22 and the second nozzle section 90 to rotate.

[0063] As described above, the second nozzle portion 90 is provided with a through-hole portion 95. This reduces the surface area of ​​the second nozzle portion 90. Therefore, in the dishwasher 1, when operation is stopped and then restarted, the accumulation of a large amount of washing water on the surface of the second nozzle portion 90 is suppressed.

[0064] [1-3. Effects, etc.] As described above, in this embodiment, the dishwasher 1 comprises a washing tank 50 for containing items to be washed, and a washing nozzle 20 for spraying washing water into the washing tank 50. The washing tank 50 is provided with a supply pipe section 56 that rotatably supports the washing nozzle 20. The washing nozzle 20 is provided with a tower nozzle section 24 that houses at least a part of the supply pipe section 56 inside, and a contact section 28 that abuts against the supply pipe section 56 is provided inside the tower nozzle section 24, so that the washing nozzle 20 is supported by the supply pipe section 56 via the contact section 28.

[0065] As a result, in the dishwasher 1, the washing nozzle 20 and the supply pipe section 56 can be connected without forming a structure that connects them to each other in the vertical direction of the washing tank 50. Therefore, the washing nozzle 20 can suppress an increase in the dimensions of the structure that is required to install the washing nozzle 20 inside the washing tank 50, and can suppress a decrease in the internal space of the washing tank 50.

[0066] As in this embodiment, the dishwasher 1 includes a washing tank 50 for containing items to be washed, and a washing nozzle 20 for spraying washing water into the washing tank 50. The washing nozzle 20 includes a first nozzle portion 22 that is rotatably mounted relative to the washing tank 50, and a second nozzle portion 90 that is rotatably attached to the first nozzle portion 22. The first nozzle portion 22 may be provided with a retaining piece 84 that is inserted through an insertion hole 91 that connects the inside and outside of the second nozzle portion 90, and is positioned inside the second nozzle portion 90 to hold the second nozzle portion 90. As a result, in the cleaning nozzle 20, the second nozzle portion 90 and the second arm portion 70 can be connected to each other in the vertical direction of the cleaning nozzle 20 without forming a connecting structure between them. Therefore, in the cleaning nozzle 20, an increase in the dimensions of the structure associated with the installation of the cleaning nozzle 20 inside the cleaning tank 50 can be suppressed, and a reduction in the internal space of the cleaning tank 50 can be suppressed.

[0067] As in this embodiment, the dishwasher 1 includes a washing tank 50 for containing items to be washed, and a washing nozzle 20 for spraying washing water into the washing tank 50. The washing nozzle 20 includes a first nozzle portion 22 rotatably mounted relative to the washing tank 50, and a second nozzle portion 90 rotatably attached to the first nozzle portion 22. The second nozzle portion 90 may be provided with a through hole 91 that communicates with the internal space of the first nozzle portion 22, and through which the rotation axis of the second nozzle portion 90 provided in the first nozzle portion 22 is inserted. The second nozzle portion 90 may also be provided with a second nozzle opening 97 for spraying washing water from the inside to the outside of the second nozzle portion 90, and a partition portion 98 that partitions the internal space of the second nozzle portion 90 and connects the through hole 91 and the second nozzle opening 97. As a result, in the second nozzle section 90, the area in which cleaning water can flow within the internal space is restricted, and the flow of cleaning water from the inlet hole 93 to the second nozzle opening 97 can be controlled. Therefore, the second nozzle section 90 can spray cleaning water to the outside in a balanced manner, and the rotation of the second nozzle section 90 due to the water pressure accompanying the flow of cleaning water can be stabilized.

[0068] As in this embodiment, the partition portion 98 may have at least two intersecting flow paths at a position overlapping the second nozzle opening 97. As a result, the cleaning water flowing inside the second nozzle section 90 is ejected to the outside from each of the second nozzle openings 97 by the force of the water colliding with each other. Therefore, the second nozzle section 90 can spray cleaning water to the outside in a balanced manner.

[0069] As in this embodiment, the second nozzle portion 90 is provided with a through-hole portion 95 that penetrates in the direction in which the rotation axis of the second nozzle portion 90 extends, and at least a part of the partition portion 98 may be a wall portion 96 of the second nozzle portion 90 that surrounds the through-hole portion 95. As a result, in the second nozzle section 90, the area in which cleaning water can flow within the internal space is restricted, and the flow of cleaning water from the inlet hole 93 to the second nozzle opening 97 can be controlled. Therefore, the second nozzle section 90 can spray cleaning water to the outside in a balanced manner, and the rotation of the second nozzle section 90 due to the water pressure accompanying the flow of cleaning water can be stabilized.

[0070] As in this embodiment, the dishwasher 1 comprises a washing tank 50 for containing items to be washed, and a washing nozzle 20 for spraying washing water into the washing tank 50. The washing nozzle 20 is provided with a second spray opening 63 for spraying washing water from the inside to the outside of the washing nozzle 20. At least some of the edges of the second spray opening 63, inclined surfaces 69 may be provided that are inclined toward a direction toward approaching each other as they move from the inside to the outside of the washing nozzle 20. As a result, the washing nozzle 20 can diffuse the washing water sprayed from it over a wider area without requiring a structure that protrudes from the upper surface of the first arm portion 60. Therefore, in the dishwasher 1, it is possible to suppress an increase in the dimensions of the washing nozzle 20 inside the washing tank 50, and to suppress a decrease in the space inside the washing tank 50.

[0071] As in this embodiment, the second injection opening 63 is formed in the shape of an elongated hole, and the inclined surfaces may be provided on each of a pair of short edges 66 that extend intersecting the direction in which the second injection opening 63 extends. As a result, the cleaning nozzle 20 can diffuse the cleaning water that is sent from the inside of the first arm portion 60 to the outside through the second injection opening 63 over a wider area.

[0072] (Other embodiments) As described above, Embodiments 1 and 2 have been presented as examples of the technology disclosed in this application. However, the technology in this disclosure is not limited thereto and can be applied to embodiments that have been modified, replaced, added, or omitted. Furthermore, it is possible to combine the components described in Embodiments 1 and 2 to create new embodiments. Therefore, other embodiments are illustrated below.

[0073] In the embodiment described above, the inclined surface 69 is provided at the second injection opening 63. However, the invention is not limited to this, and the inclined surface 69 may also be provided at the first injection opening 61 or the second nozzle opening 97.

[0074] In the embodiment described above, the second nozzle portion 90 is provided with a through hole portion 95. However, the invention is not limited to this, and the second nozzle portion 90 may be provided with a shape that, in a plan view, is cut out from the outer peripheral surface portion 99 toward the central portion in the plane of the second nozzle portion 90, thereby forming a flow path for washing water. Alternatively, for example, the second nozzle portion 90 may not have a through-hole portion 95, and another partition portion 98 different from the partition portion 98 described above may be provided in the internal space, thereby forming a flow path for the washing water. In any of the above cases, it is desirable that the second nozzle section 90 and the water channel provided inside the second nozzle section 90 have a point-symmetrical shape with respect to the insertion hole 91 in a plan view.

[0075] The embodiments described above are for illustrative purposes only and may be modified, replaced, added, or omitted within the scope of the claims or equivalents thereof.

[0076] (Note) Based on the above description of embodiments, the following technologies are disclosed.

[0077] (Technical 1) A dishwasher comprising a washing tank for containing objects to be washed, and a washing nozzle for spraying washing water into the washing tank, wherein the washing tank is provided with a support portion for rotatably supporting the washing nozzle, the washing nozzle is provided with a housing portion for housing at least a part of the support portion inside, the housing portion is provided with a contact portion for contacting the support portion, and the washing nozzle is supported by the support portion via the contact portion. This allows the dishwasher to house the structure connecting the washing nozzle and the washing tank inside the washing nozzle. Therefore, the washing nozzle can suppress an increase in the dimensions of the structure related to the attachment of the washing nozzle inside the washing tank.

[0078] (Technical 2) A dishwasher comprising a washing tank for containing items to be washed, and a washing nozzle for spraying washing water into the washing tank, wherein the washing nozzle comprises a first nozzle portion rotatably mounted relative to the washing tank, and a second nozzle portion rotatably attached to the first nozzle portion, and the first nozzle portion is provided with a holding portion that is inserted into an insertion hole that connects the inside and outside of the second nozzle portion and is positioned inside the second nozzle portion to hold the second nozzle portion. As a result, in the cleaning nozzle, the second nozzle section and the second arm section can be connected to each other without forming a connecting structure between them. Therefore, in the cleaning nozzle, the increase in the dimensions of the structure inside the cleaning tank due to the installation of the cleaning nozzle can be suppressed.

[0079] (Technical 3) A dishwasher comprising a washing tank for containing objects to be washed, and a washing nozzle for spraying washing water into the washing tank, wherein the washing nozzle comprises a first nozzle portion rotatably mounted relative to the washing tank, and a second nozzle portion rotatably attached to the first nozzle portion, the second nozzle portion being provided with a through hole communicating with the internal space of the first nozzle portion and through which the rotating shaft of the second nozzle portion provided in the first nozzle portion is inserted, an opening for spraying washing water from the inside to the outside of the second nozzle portion, and a partition portion that partitions the internal space of the second nozzle portion and connects the through hole and the opening. As a result, the area in the second nozzle section where cleaning water can flow is restricted, allowing control over the flow of cleaning water. Therefore, the second nozzle section can spray cleaning water to the outside in a balanced manner.

[0080] (Technical 4) The dishwasher according to Technical 3, wherein the partition portion forms at least two intersecting channels at a position overlapping the opening. As a result, the cleaning water flowing inside the second nozzle section is ejected to the outside from each opening by the force of the water colliding with each other. Therefore, the second nozzle section can spray cleaning water to the outside in a balanced manner.

[0081] (Technical 5) The dishwasher according to Technical 3 or Technical 4, wherein the second nozzle portion is provided with a through hole portion that penetrates in the direction in which the rotation axis of the second nozzle portion extends, and at least a part of the partition portion is the wall portion of the second nozzle portion that surrounds the through hole portion. As a result, the area in the second nozzle section where cleaning water can flow is restricted, allowing control over the flow of cleaning water. Therefore, the second nozzle section can spray cleaning water to the outside in a balanced manner.

[0082] (Technical 6) A dishwasher comprising a washing tank for containing items to be washed, and a washing nozzle for spraying washing water into the washing tank, wherein the washing nozzle is provided with an opening for spraying washing water from the inside to the outside of the washing nozzle, and at least some of the edges of the opening are provided with inclined surfaces that are sloped toward a direction toward approaching each other as they move from the inside to the outside of the washing nozzle. This allows the washing nozzle to diffuse the washing water sprayed from it over a wider area without requiring any externally protruding structures. As a result, the size of the washing nozzle inside the washing tank of a dishwasher can be kept from increasing.

[0083] (Technical 7) The dishwasher according to Technical 6, wherein the opening is formed in the shape of an elongated hole, and the inclined surface is provided on each of a pair of edges that extend intersecting the direction in which the opening extends. This allows the cleaning nozzle to spread the cleaning water, which is sent from the inside to the outside, over a wider area. [Industrial applicability]

[0084] This disclosure is applicable to dishwashers in which a washing nozzle that sprays washing water is supported by a support section through which a flow path for washing water is provided. Specifically, this disclosure is applicable to pull-out dishwashers. [Explanation of Symbols]

[0085] 1 Dishwasher 10 cabinets 11 Door Body 13. The second rail 15 Lid 16 Lid side contact part 17 Parallel link mechanism 20 Cleaning Nozzles 22 First nozzle section 24 Tower nozzle section 25 Through opening 26 Watershed 27 Water diversion opening 28 Contact part 29 Ribs 30 Washing baskets 41 First Rail 42 Valve body 43 Washing pump 47 Heater 50 Washing Tanks 51 Aperture 52 Bottom part 53 area 54 Rear part 55 Side part 56 Supply pipe section 60 First Arm Section 61 1st injection opening 62 Top part 63 2nd injection opening 64 Bottom part 65 Slope 66 Short edge 68 Long edge 69 Slope 70 Second Arm Section 72 Top part 74 Bottom part 76 Connecting shaft section 77 Communication hole 78 Covered part 79 Outflow hole 80 Support piece 82 Covered surface part 84 Holding piece 86 Engaging piece 90 Second nozzle section 91 Through hole 92 Top part 93 Inflow hole 94 Bottom part 95 Through hole 96 Wall 97 Second nozzle opening 98 Partition 99 Outer peripheral surface 100 Ring section I Virtual Line W arrow

Claims

1. A washing tank for containing the items to be washed, A cleaning nozzle that sprays cleaning water into the inside of the cleaning tank, Equipped with, The cleaning tank is provided with a support portion that rotatably supports the cleaning nozzle, The cleaning nozzle is provided with a housing that accommodates at least a part of the support portion inside, Inside the housing section, a contact portion is provided that contacts the support portion. The cleaning nozzle is supported by the support portion via the contact portion. dishwasher.

2. A washing tank for containing the items to be washed, A cleaning nozzle that sprays cleaning water into the inside of the cleaning tank, Equipped with, The aforementioned cleaning nozzle is A first nozzle portion is rotatably mounted relative to the washing tank, A second nozzle portion is rotatably attached to the first nozzle portion, Equipped with, The first nozzle portion is provided with a holding portion which is inserted into an insertion hole that connects the inside and outside of the second nozzle portion, and is positioned inside the second nozzle portion to hold the second nozzle portion. dishwasher.

3. A washing tank for containing the items to be washed, A cleaning nozzle that sprays cleaning water into the inside of the cleaning tank, Equipped with, The aforementioned cleaning nozzle is A first nozzle portion is rotatably mounted relative to the washing tank, A second nozzle portion is rotatably attached to the first nozzle portion, Equipped with, The second nozzle section includes: A through hole that communicates with the internal space of the first nozzle portion and through which the rotating shaft of the second nozzle portion provided in the first nozzle portion is inserted, The opening for spraying cleaning water from the inside to the outside of the second nozzle section, A partition portion that divides the internal space of the second nozzle portion and connects the insertion hole and the opening, A will be established. dishwasher.

4. The partition portion forms at least two intersecting channels at a position overlapping the opening. The dishwasher according to claim 3.

5. The second nozzle portion is provided with a through hole that penetrates in the direction in which the rotation axis of the second nozzle portion extends. At least a portion of the partition is the wall portion of the second nozzle portion that surrounds the through hole portion. A dishwasher according to claim 3 or claim 4.

6. A washing tank for containing the items to be washed, A cleaning nozzle that sprays cleaning water into the inside of the cleaning tank, Equipped with, The cleaning nozzle is provided with an opening for spraying cleaning water from the inside of the cleaning nozzle to the outside. At least some of the edges of the opening, inclined surfaces are provided at some of the opposing locations, which are inclined in a direction that brings them closer together as they move from the inside outwards of the cleaning nozzle. dishwasher.

7. The aforementioned opening is formed in the shape of an elongated hole, The inclined surfaces are provided on each of a pair of edges that extend intersecting the direction in which the opening extends. The dishwasher according to claim 6.

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