Dishwasher

Abstract

To provide a dishwasher capable of suppressing leakage of drain water to the outside even when a drain port and a drain hose are connected together outside a base frame.SOLUTION: A dishwasher in which a drain port and a connection part of a drain hose are connected together outside a base frame includes a drain hose holder for covering the drain port and the connection part. The drain port is formed with a first hook part facing the upstream side in the drain water flow inside the drain port. The connection part is formed with a second hook part facing the downstream side in the drain water flow inside the connection part. The drain hose holder is formed with a first coming-off prevention part facing the first hook part and a second coming-off prevention part facing the second hook part.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present disclosure relates to dishwashers. [Background technology]

[0002] Patent Document 1 discloses a built-in type dishwasher, in which a drain hose connected to a drain pump inside the housing is pulled out from the upper part of the rear surface of the housing to drain water. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2007-202875 A Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present disclosure is to provide a dishwasher that can prevent drainage water from leaking to the outside even when the drain outlet and drain hose are connected outside the frame. [Means for solving the problem]

[0005] A first aspect of the dishwasher of the present disclosure is a dishwasher in which a drain outlet and a drain hose connection part are connected outside a frame, and the dishwasher is provided with a drain hose holder covering the drain outlet and the connection part, the drain outlet is formed with a first hook part facing the upstream side of the drain flow inside the drain outlet, the connection part is formed with a second hook part facing the downstream side of the drain flow inside the connection part, and the drain hose holder is formed with a first anti-slip part facing the first hook part and a second anti-slip part facing the second hook part.

[0006] A second aspect of the dishwasher of the present disclosure is a dishwasher in which a drain outlet and a drain hose connection part are connected outside a frame, and the dishwasher is provided with a drain hose holder that covers the drain outlet and the connection part, and a recovery path that recovers leaked water in the frame, and a connecting part is formed in the drain hose holder that connects the internal space of the drain hose holder with the recovery path. Effect of the Invention

[0007] In the dishwasher according to the first aspect of the present disclosure, the drain hose holder can prevent the drain outlet and the drain hose connection port from coming loose. Therefore, even if the drain outlet and the drain hose are connected outside the frame, drainage can be prevented from leaking to the outside.

[0008] In the dishwasher according to the second aspect of the present disclosure, when wastewater leaks from the connection between the drain outlet and the drain hose connection port, the leaked water can be collected in the frame via the collection path. Therefore, even if the drain outlet and the drain hose are connected outside the frame, the wastewater can be prevented from leaking to the outside. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is an overall perspective view of a dishwasher according to a first embodiment with a door open; [Diagram 2] Dishwasher left side view [Diagram 3] Close-up of the air break device [Figure 4] 4 is a cross-sectional view showing a cross section of FIG. 2 along line IV-IV. [Diagram 5] Perspective view of the drain hose holder [Figure 6] A perspective view of a first member [Figure 7] A perspective view of a second member [Figure 8] Cross-sectional view of the drain hose holder DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] (The knowledge and other information that formed the basis of this disclosure) At the time when the inventors came up with the idea of ​​the present disclosure, it was common for the drain hose of a dishwasher to be connected to the drain outlet of the dishwasher inside the frame. In such a case, if water leakage occurs at the connection between the drain hose and the drain outlet, the leakage occurs inside the frame, so the design was such that a sensor was provided inside the frame to detect the leakage. However, because typical kitchen drain pipes are raised up to about 400 mm above the floor, in this configuration, the drain hose must be raised at least once to connect it. This means that a place to trap the wastewater is formed inside the raised drain hose. However, in a configuration in which a trap is formed inside the drain hose, the depth of the trap's water seal is determined when the dishwasher is installed, which may affect the drainage performance. In response to this, the inventors came up with the idea of ​​ensuring drainage performance by forming a drain trap in the dishwasher in advance and suppressing the formation of a trap in the drain hose. The inventors also came up with the idea of ​​connecting the drain hose to the drain outlet on the outlet side of the trap provided in the dishwasher at a position outside the frame that is higher than the drain pipe provided at the installation location of the dishwasher, in order to suppress the formation of a trap in the drain hose. The inventors then discovered a problem that when the drain outlet and drain hose are connected outside the frame, for example for reasons such as those described above, drainage water leaking from the connection between the drain outlet and the drain hose is likely to leak outside the dishwasher, and in order to solve this problem, they came up with the subject matter of the present disclosure. Therefore, the present disclosure provides a dishwasher that can prevent drainage water from leaking to the outside even if the drain outlet and drain hose are connected outside the frame.

[0011] Hereinafter, the embodiments will be described in detail with reference to the drawings. However, more detailed explanation than necessary may be omitted. For example, detailed explanation of already well-known matters or duplicate explanation of substantially the same configuration may be omitted. This is to avoid the following explanation becoming more redundant than necessary 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 described in the claims.

[0012] (Embodiment 1) Hereinafter, the first embodiment will be described with reference to the drawings. [1-1. Configuration] [1-1-1. Dishwasher configuration] FIG. 1 is an overall perspective view of a dishwasher 1 according to a first embodiment with a door 11 open.

[0013] As shown in Fig. 1, a dishwasher 1 according to the present embodiment has a box-shaped housing 10 with an open front. Housing 10 is housed inside a system kitchen. A door body 11 is attached to the front of the housing 10 so as to be freely opened and closed around its lower end. A decorative panel (not shown) of the system kitchen is attached to the front side of the door body 11. The dishwasher 1 of this embodiment is a so-called front-open type dishwasher 1 built into a system kitchen.

[0014] The inside of the housing 10 is a washing tank 12. Inside the washing tank 12, washing baskets 19, 20 and a basket for cutlery are provided, and the washing baskets 19, 20 and the basket for cutlery are configured so that items to be washed can be placed in them. The housing 10 is supported from below by a frame 13. A spray nozzle 14 is rotatably disposed on a substantially horizontal plane below each of the cleaning baskets 19 and 20 and on the top surface of the cleaning tank 12. The spray nozzle 14 sprays tap water supplied from a water supply hose (not shown) into the inside of the cleaning tank 12.

[0015] An air break device 40 for drainage is attached to the outside of the housing 10. A drain hose 50 is attached to the air break device 40. The drainage water after being used for cleaning in the cleaning tank 12 is drained through the air break device 40 and the drain hose 50.

[0016] [1-1-2, Air Break Device Configuration] Fig. 2 is a left side view of the dishwasher 1. Fig. 3 is an enlarged view of the air breaking device 40 with the front cover 41 removed.

[0017] The air break device 40 has a main body 42 made of a rigid material such as resin. Inside the main body 42, a water supply path 43, a drain path 45, a drain trap 46, and a recovery path 48 are formed. Each of the paths 43, 45, 48 and the drain trap 46 is a passage formed by covering a space partitioned by a partition wall formed on the main body 42 so as to protrude to the left side with the front cover 41 from the left. Note that the left side in this specification refers to the left side as viewed by the user when the user views the dishwasher 1 from the front side of the dishwasher 1, i.e., the side of the door body 11. Hereinafter, the descriptions of the left and right directions follow the above definitions.

[0018] The water supply path 43 is formed to extend upward from the lower end of the main body 42, and the upper end of the water supply path 43 is connected to the cleaning tank 12. A circular internal communication hole 43a is provided in the center of the water supply path 43. The internal communication hole 43a connects the inside of the cleaning tank 12 to the atmosphere, and is used for exhausting air and supplying water. In this embodiment, cleaning water is supplied to the cleaning tank 12 through the internal communication hole 43a.

[0019] A water supply connection 43b is provided at the lower end of the water supply path 43. A water supply hose 15 is connected to the water supply connection 43b. Tap water is supplied to the water supply hose 15 from an external water supply pipe. The tap water is supplied to the washing tank 12 via the water supply hose 15, the water supply connection 43b, the water supply path 43, and the interior communication hole 43a.

[0020] The drainage path 45 extends upward from the lower end of the main body 42 and is bent downward at the upper end of the main body 42. At the lower end of the drainage path 45, a drainage connection part 45a is provided. The drain connection part 45a is connected to an end of an internal drain hose 16 which is connected to the cleaning tank 12. The internal drain hose 16 is configured to supply drainage water after cleaning of the cleaning tank 12 by driving a drain pump (not shown).

[0021] Drain trap 46 is connected continuously to the outlet side of drain path 45. Drain trap 46 is located above drain connection 45a. Drain trap 46 is formed in a substantially U-shape. Drain trap 46 stores a part of the drainage flowing in through drain path 45 to form a seal, and blocks air on the outlet side of drain trap 46 from air on the inlet side. This makes it possible to prevent odors, sanitary pests, and the like from entering dishwasher 1 from drain riser pipe P.

[0022] A drain portion 46a that is slightly inclined downward is formed at the upper end of the outlet side of drain trap 46. A drain outlet 47 that is oriented downward is provided at the tip of drain portion 46a. Drain outlet 47 is located at the rear end of main body 42. Drain outlet 47 is disposed at the rear corner of the left side surface of housing 10 of dishwasher 1. Drain outlet 47 is also located outside frame 13. In other words, drain outlet 47 is located above the upper end of frame 13. Drain outlet 47 is also located at approximately the same position as the rear end of frame 13 in the front-to-rear direction.

[0023] A drain hose 50 is connected to the drain outlet 47. The drain hose 50 is configured to be drawn rearward from a rear corner of the housing 10. In this embodiment, the dishwasher 1 is a front-opening dishwasher 1, so in order to ensure the volume of the washing tank 12, it is necessary to position the rear side up to the rear limit of the system kitchen. Therefore, by arranging the air break device 40 at the rear of one side of the dishwasher 1 and arranging the drain outlet 47 at the rear corner of the housing, it is possible to ensure the volume of the washing tank 12 without affecting the outer shape of the washing tank 12. The drain hose 50 is inserted into a drain riser pipe P that is provided upward from the floor surface at the installation location of the dishwasher 1. In addition, the drain hose 50 does not have a portion that is inclined upward on the outlet side in order to drain the wastewater without trapping it. That is, the drain outlet 47 is located above the upper end of the drain riser pipe P. In this embodiment, the drain riser pipe P is raised about 400 mm from the floor surface.

[0024] In this embodiment, the drain trap 46 is provided inside the main body 42 and is formed by the main body 42, which is a rigid body, rather than the drain hose 50. When the drain pump is driven and wastewater flows into the internal drain hose 16, the wastewater flows into the drain trap 46 via the drain connection part 45a and the drain path 45. The wastewater that flows into the drain trap 46 passes through the drain part 46a and the drain port 47, then flows into the drain hose 50 and is drained outside the machine.

[0025] The air break device 40 is also provided with an atmosphere opening section 44 that is in communication with the outside air. The atmosphere opening section 44 is provided above the water supply path 43 and the drainage path 45. The atmosphere opening section 44 is in communication with the upper end of the water supply path 43 via a water supply side open passage 44a. The atmosphere opening section 44 is in communication with the upper end of the drainage path 45 via a drainage side open passage 44b.

[0026] The atmosphere vent 44 connected to the upper end of the water supply path 43 can prevent backflow of flush water when the pressure in the water supply pipe becomes negative for some reason. Also, the atmosphere vent 44 connected to the upper end of the drainage path 45 can prevent erroneous drainage, such as unintentional drainage due to the siphon effect, when the pressure in the drainage riser pipe P becomes negative for some reason.

[0027] Recovery path 48 is a passage extending upward from the lower end of main body 42. Recovery path 48 is located at the rear end of main body 42. A holder connection portion 48a is formed at the upper end of recovery path 48. Holder connection portion 48a opens toward the rear. Recovery path 48 communicates with the inside of drain hose holder 60 via holder connection portion 48a. Drain hose holder 60 covers the connection portion between drain outlet 47 and drain hose 50 from all sides. Drainage water leaking from the connection portion between drain outlet 47 and drain hose 50, i.e., leakage water, flows into recovery path 48 via drain hose holder 60 and holder connection portion 48a.

[0028] Fig. 4 is a cross-sectional view showing a cross section taken along line IV-IV in Fig. 2. As shown in Figs. 3 and 4, a frame connection part 48b is formed at the lower end of the recovery path 48. The frame connection part 48b opens toward the right side. The frame connection part 48b connects the recovery path 48 to the space inside the underframe 13. Leakage water flowing through the recovery path 48 flows into the underframe 13 via the frame connection part 48b.

[0029] The frame 13 is a member that supports the housing 10, the inside of which is the washing tank 12, and is located below the housing 10. The frame 13 is placed on the floor surface of the installation location of the dishwasher 1. The frame 13 is a member that is roughly tray-shaped. Inside the frame 13, various parts such as a drain pump and a water supply pump (not shown) are arranged. Water does not normally flow into the frame 13, but the frame 13 can receive water leaking from various parts inside the frame 13. In addition, a water leakage detection sensor 13a is arranged inside the frame 13. The water leakage detection sensor 13a detects water leaking into the inside of the frame 13. The water leakage detection sensor 13a is connected to a control device (not shown) that controls the dishwasher 1. When the control device receives a detection signal from the water leakage detection sensor 13a, it controls various parts of the dishwasher 1 to notify the user of the leakage, etc.

[0030] [1-1-3. Configuration of drain hose holder] Fig. 5 is a perspective view of the drain hose holder 60. In Fig. 5 and subsequent figures, the direction corresponding to the left in the description of the specification is indicated with the symbol X, the direction corresponding to the front is indicated with the symbol Y, and the direction corresponding to the upward is indicated with the symbol Z.

[0031] Drain hose holder 60 is a hollow, generally cylindrical structure. Inside drain hose holder 60, space S1 is formed, which penetrates drain hose holder 60 vertically. The connection part between drain outlet 47 and drain hose 50 described above is disposed in space S1. Hereinafter, the direction approaching or moving away from axis AX along the vertical direction passing through the center of the connection part between drain outlet 47 and drain hose 50 is referred to as the radial direction. The direction around axis AX is referred to as the circumferential direction.

[0032] Fig. 6 is a perspective view of the first member 70. Fig. 7 is a perspective view of the second member 80. The drain hose holder 60 is composed of a first member 70 and a second member 80, each of which is made of resin. The first member 70 constitutes the left half of the drain hose holder 60, and the second member 80 constitutes the right half of the drain hose holder 60.

[0033] As shown in FIG. 6, the first member 70 has a first peripheral wall portion 71 that is curved such that both ends in the horizontal direction are directed to the right and extends vertically. The first peripheral wall portion 71 is formed over approximately 180° in the circumferential direction. A first upper wall portion 72 that expands radially inward is formed at the upper end of the first peripheral wall portion 71. The first upper wall portion 72 is formed over the entire first peripheral wall portion 71 in the circumferential direction. The tip of the first upper wall portion 72 is shaped to follow the outer shape of the drain port 47. The first upper wall portion 72 is formed with a first lower surface portion 72a that is a surface directed downward. The first lower surface portion 72a is an example of a "first retaining portion" in this embodiment.

[0034] A first lower wall portion 73 is formed below the first upper wall portion 72. The first lower wall portion 73 protrudes radially inward from the first peripheral wall portion 71. The first lower wall portion 73 is formed over substantially the entire first peripheral wall portion 71 in the circumferential direction. The tip of the first lower wall portion 73 is shaped to conform to the outer shape of the drain outlet 47. A notch 73a is formed at the tip of the first lower wall portion 73. A rib (not shown) formed on the drain outlet 47 is inserted into the notch 73a. This restricts the rotation of the drain hose holder 60 relative to the drain outlet 47. A first groove portion 74 is formed by the first peripheral wall portion 71, the first upper wall portion 72, and the first lower wall portion 73. The first groove portion 74 is a groove recessed toward the outside in the circumferential direction in the first member 70.

[0035] A first step portion 75 is formed at the lower end of the first peripheral wall portion 71. The first step portion 75 is a stepped structure formed by increasing the thickness of the first peripheral wall portion 71 radially inward. The radially inner end of the first step portion 75 is shaped to follow the outer shape of the drain hose 50. A first upper surface portion 75a, which is a surface facing upward, is formed at the upper end of the first step portion 75. The first upper surface portion 75a is an example of a "second retaining portion" in this embodiment.

[0036] A connecting portion 76 is formed at the lower part of the first peripheral wall portion 71. The connecting portion 76 is a cylindrical structure extending forward from the front end of the first peripheral wall portion 71. A connecting passage S2, which is a space penetrating from the first peripheral wall portion 71 to the tip of the connecting portion 76 in the front-rear direction, is formed inside the connecting portion 76. In this embodiment, the lower surface of the inner surface of the connecting portion 76 is smoothly connected to the first upper surface portion 75a. In addition, the lower surface of the inner surface of the connecting portion 76 is formed in a shape in which the front side is located downward. The tip of the connecting portion 76 is inserted into the holder connection portion 48a formed in the air break device 40 (see FIG. 3). Here, the tip of the connecting portion 76 is provided inside the tip of the holder connection portion 48a, which is the opening of the air break device 40. Therefore, when water is collected from the connecting portion 76 to the holder connection portion 48a, the water does not leak and can be collected into the collection path 48. In this manner, the connecting portion 76 allows the space S1 inside the drain hose holder 60 to communicate with the upper end of the recovery path 48 via the connecting passage S2.

[0037] Contact surfaces 76a, 76b are formed near the tip of the connecting portion 76. The contact surface 76a is located to the left of the connecting passage S2 and has a flat plate-like structure perpendicular to the left-right direction. The contact surface 76b is located rearward of the tip of the connecting portion 76 and is formed in a shape that expands outward from the connecting portion 76. The contact surfaces 76a, 76b come into contact with the air break device 40, thereby positioning the connecting portion 76 with respect to the holder connecting portion 48a.

[0038] A bulging portion 77 that bulges outward in the radial direction is formed on the rear side of the upper portion of the first circumferential wall portion 71. The upper portion of the space S1 is formed to be wider than the lower portion by the bulging portion 77. The bulging portion 77 is formed to accommodate a band B, which will be described later (see FIG. 8).

[0039] A claw portion 78 that protrudes toward the right is formed at the front end of the first peripheral wall portion 71. The claw portion 78 is used to attach the first member 70 to the second member 80 and assemble the drain hose holder 60. A first mounting portion 79 is formed at the front end of the first peripheral wall portion 71. The first mounting portion 79 is a flat protrusion that is formed toward the front around the lower end of the first peripheral wall portion 71 and is perpendicular to the left-right direction. A mounting hole 79a that penetrates the first mounting portion 79 from left to right is formed in the first mounting portion 79. The first mounting portion 79 is used to assemble the drain hose holder 60 and to attach the drain hose holder 60 to the air break device 40.

[0040] FIG. 7 is a perspective view of the second member 80. As shown in FIG. 7, the second member 80 has a second peripheral wall portion 81 that is curved in a direction in which both ends in the horizontal direction are directed to the left and extends up and down. The second peripheral wall portion 81 is formed over approximately 180° in the circumferential direction. A second upper wall portion 82 that expands toward the inside in the radial direction is formed at the upper end of the second peripheral wall portion 81. The second upper wall portion 82 is formed over the entire second peripheral wall portion 81 in the circumferential direction. The tip of the second upper wall portion 82 is shaped to follow the outer shape of the drain port 47. The second upper wall portion 82 is formed with a second lower surface portion 82a that is a surface directed downward. The second lower surface portion 82a corresponds to an example of a "first retaining portion" in this embodiment.

[0041] A second lower wall portion 83 is formed below the second upper wall portion 82. It protrudes radially inward from the second peripheral wall portion 81. The second lower wall portion 83 is formed over substantially the entire second peripheral wall portion 81 in the circumferential direction. The tip of the second lower wall portion 83 is shaped to conform to the outer shape of the drain outlet 47. A notch 83a is formed at the tip of the second lower wall portion 83. A rib (not shown) formed on the drain outlet 47 is inserted into the notch 83a. This restricts the rotation of the drain hose holder 60 relative to the drain outlet 47. A second groove portion 84 is formed by the second peripheral wall portion 81, the second upper wall portion 82, and the second lower wall portion 83. The second groove portion 84 is a groove recessed toward the outside in the circumferential direction.

[0042] The second upper wall portion 82 is formed at the same height as the first upper wall portion 72. The second lower surface portion 82a is formed at the same height as the first lower surface portion 72a. The second lower wall portion 83 is formed at the same height as the first lower wall portion 73. In other words, the second groove portion 84 is formed at the same height as the first groove portion 74.

[0043] A second step portion 85 is formed at the lower end of the second peripheral wall portion 81. The second step portion 85 is a step-like structure formed by increasing the thickness of the second peripheral wall portion 81 radially inward. The radially inner end of the second step portion 85 is shaped to follow the outer shape of the drain hose 50. A second upper surface portion 85a, which is a surface facing upward, is formed at the upper end of the second step portion 85. The second upper surface portion 85a is formed at the same height as the first upper surface portion 75a. The second upper surface portion 85a is an example of a "second retaining portion" in this embodiment.

[0044] A second bulge 87 bulging outward in the radial direction is formed on the rear side of the upper part of the second peripheral wall portion 81. The second bulge 87 makes the upper part of the space S1 wider than the lower part. The second bulge 87 is formed to accommodate a band B, which will be described later (see FIG. 8). The second bulge 87 is formed to the same height as the first bulge 77.

[0045] A fitting portion 88 is formed at the rear end of the second peripheral wall portion 81. A rectangular hole 88a penetrating from left to right is formed in the fitting portion 88. The claw portion 78 of the first member 70 is inserted into the hole 88a. The rear end of the first member 70 and the rear end of the second member 80 are fixed together by fitting the fitting portion 88 and the claw portion 78 together.

[0046] A projection 86 projecting forward and a second mounting portion 89 are formed at the front end of the second peripheral wall portion 81. The projection 86 is inserted into the rear end of the air break device 40. The second mounting portion 89 is formed so as to be positioned on the left side of the first mounting portion 79. A second mounting hole 89a is formed in the second mounting portion 89. The second mounting portion 89 is fastened to the first mounting portion 79 by bolts or the like inserted into the respective mounting holes 79a, 89a. This fixes the front end of the first member 70 and the front end of the second member 80. In addition, the bolts or the like inserted into the respective mounting holes 79a, 89a are fastened to the rear end of the air break device 40, so that the drain hose holder 60 is fixed to the air break device 40.

[0047] Fig. 8 is a cross-sectional view of drain hose holder 60, showing drain hose holder 60 in a cross section perpendicular to the left-right direction. As shown in Fig. 8, drain port 47 and connection part 51 of drain hose 50 are arranged in space S1 inside drain hose holder 60.

[0048] The drain outlet 47 has a substantially cylindrical structure extending downward. Inside the drain outlet 47, the drain flows from the top to the bottom. That is, in this embodiment, in the flow of the drain inside the drain outlet 47, the upper side is the upstream side, and the lower side is the downstream side. A first rib 47a protruding radially outward is formed on the side surface of the drain outlet 47. The first rib 47a is formed over substantially the entire circumference of the side surface of the drain outlet 47. The first rib 47a is formed upstream, i.e., upward, of the tip of the drain outlet 47. In this embodiment, the cross-sectional shape of the first rib 47a is substantially rectangular, and a first hook surface 47b, which is a surface facing the upper side, i.e., the upstream side of the flow of the drain, is formed on the upper end of the first rib 47a. That is, the first hook surface 47b is a surface facing upward, opposite to the lower side where the drain hose 50 is located. The first hook surface 47b is an example of a "first hook portion" in this disclosure.

[0049] 8, the first rib 47a is inserted into the inside of each of the grooves 74, 84. Therefore, the first hook surface 47b is provided at a position facing each of the lower surface portions 72a, 82a. Also, each of the lower wall portions 73, 83 faces the first rib 47a from below. The first lower wall portion 73 and the second lower wall portion 83 in this embodiment are an example of a "third retaining portion."

[0050] The connection part 51 is an end of the drain hose 50 opposite to the end connected to the drain riser pipe P, and has a substantially cylindrical shape. Inside the connection part 51, the drain flows from above to below. That is, in this embodiment, in the flow of the drain inside the connection part 51, the upper side is the upstream side, and the lower side is the downstream side. The connection part 51 is connected to the cylindrical drain outlet 47 from below so as to cover it from the radially outside. The connection part 51 is attached to the drain outlet 47 by fitting it into the drain outlet 47. The connection part 51 is tightened by a metal band B from the radially outside at the portion overlapping the drain outlet 47. As described above, the band B is arranged in the portion of the space S1 that is widened by each of the bulging parts 77 and 87.

[0051] The connecting portion 51 is formed with a second rib 53 that protrudes radially outward. The second rib 53 is formed around the connecting portion 51. The second rib 53 is formed downstream, i.e., downward, of the tip of the connecting portion 51. In this embodiment, the cross-sectional shape of the second rib 53 is approximately rectangular, and a second hook surface 53a is formed at the lower end of the second rib 53, which is a surface facing downward, i.e., the downstream side in the flow of wastewater. In other words, the second hook surface is facing in the opposite direction to the upward direction to which the first hook surface 47b is facing. The second hook surface 53a is an example of a "second hook portion" in this embodiment.

[0052] 8, the second rib 53 is disposed above each of the stepped portions 75, 85. Therefore, the second hooking surface 53a is located opposite each of the upper surface portions 75a, 85a formed on each of the stepped portions 75, 85. In this embodiment, the second hooking surface 53a and each of the upper surface portions 75a, 85a are disposed with a gap between them in the vertical direction.

[0053] [1-2. Operation] The operation of the dishwasher 1 configured as above will now be described.

[0054] [1-2-1. Action when the drain hose is pulled downward] When the drain hose 50 is pulled downward, the second hook surface 53a of the second rib 53 formed on the connection portion 51 of the drain hose 50 is hooked from above onto the upper surface portions 75a, 85a formed on the drain hose holder 60 and facing the second hook surface 53a. This restricts the downward movement of the connection portion 51, making it difficult for the drain hose 50 to be pulled out of the drain port 47. In addition, in this embodiment, the first rib 47a is also hooked from above onto the lower wall portions 73, 83 of the drain hose holder 60. This allows the downward force acting on the drain port 47 to be received by the lower wall portions 73, 83 of the drain hose holder 60 via the first rib 47a.

[0055] A downward force acts on drain hose holder 60 due to contact between second hook surface 53a and upper surface portions 75a, 85a. As a result, drain hose holder 60 tries to move downward. In response to this, each lower surface portion 72a, 82a formed on drain hose holder 60 is located in a position facing first hook surface 47b formed on drain outlet 47. Therefore, first hook surface 47b and each lower surface portion 72a, 82a are hooked, and downward movement of drain hose holder 60 is restricted. In this embodiment, drain hose holder 60 is connected to the rear end of air break device 40 via connecting portion 76, each mounting portion 79, 89, and protrusion 86. Therefore, downward movement of drain hose holder 60 is firmly restricted.

[0056] By restricting the downward movement of drain hose holder 60, it becomes easier to maintain the restriction on the downward movement of connection portion 51. Therefore, drain hose 50 becomes less likely to be pulled out of drain port 47.

[0057] [1-2-2. Effects of water leakage from connection parts] Even if the drain hose 50 is not pulled out of the drain port 47, for example, if a crack occurs in the connection part 51 of the drain hose 50, the drainage water may leak out of the drain port 47 and the drain hose 50 in the space S1 inside the drain hose holder 60. In such a case, the leaked water flows downward in the space S1 along the outer surface of the drain hose 50, etc.

[0058] Leaking water that flows downward within space S1 flows onto upper surface portions 75a, 85a of each step portion 75, 85. In this embodiment, the radially inner end portion of each step portion 75, 85 is formed along the outer shape of drain hose 50, so that the gap between each step portion 75, 85 and drain hose 50 is small. For this reason, leakage water that flows downward along the outer surface of drain hose 50, etc., tends to flow into upper surface portions 75a, 85a and is unlikely to leak out to the outside of drain hose holder 60.

[0059] Leaking water that has flowed onto the upper surface portions 75a, 85a in the space S1 flows into the connecting passage S2 on the inside of the connecting portion 76 formed in the first member 70. In the present embodiment, the upper surface portions 75a, 85a and the lower surface of the inner surface of the connecting portion 76 are smoothly connected, so that the leaking water that has flowed onto the upper surface portions 75a, 85a easily flows into the connecting passage S2.

[0060] The leaked water that has flowed into the connecting passage S2 flows forward inside the connecting passage S2. In this embodiment, the lower end of the connecting passage S2 is shaped so that the front side is positioned downward, making it easy for the leaked water to flow forward. The leaked water then flows into the recovery path 48 via the holder connection part 48a provided at the rear end of the air break device 40. In other words, the space S1 inside the drain hose holder 60 and the connecting passage S2 inside the connecting part 76 can be said to be part of the recovery path that recovers the leaked water. In other words, a part of the drain hose holder 60 is part of the recovery path that recovers the leaked water.

[0061] The leaked water that has flowed into the recovery path 48 flows downward and enters the inside of the underframe 13 via the underframe connection part 48b formed at the lower end of the recovery path 48. Therefore, the leaked water that occurs at the connection part between the drain hose 50 and the drain outlet 47 can be collected inside the underframe 13. In particular, in this embodiment, since the leak detection sensor 13a is provided inside the underframe 13, it is possible to notify the user, for example, that a leak has occurred.

[0062] [1-3. Effects, etc.] As described above, in this embodiment, dishwasher 1 connects drain outlet 47 and connection part 51 of drain hose 50 outside frame 13, and is provided with drain hose holder 60 covering drain outlet 47 and connection part 51, drain outlet 47 is formed with a first hook surface 47b facing upward, which is the upstream side of the drainage flow inside drain outlet 47, connection part 51 is formed with a second hook surface 53a facing downward, which is the downstream side of the drainage flow inside connection part 51, and drain hose holder 60 is formed with a first lower surface portion 72a and a second lower surface portion 82a facing first hook surface 47b, and a first upper surface portion 75a and a second upper surface portion 85a facing second hook surface 53a.

[0063] According to this configuration, when the drain hose 50 is pulled, the movement of the connection portion 51 is restricted, and the drain hose 50 is less likely to come off from the drain outlet 47. Therefore, even if the drain outlet 47 and the drain hose 50 are connected outside the underframe 13, leakage of drainage to the outside can be suppressed.

[0064] Furthermore, as in this embodiment, in dishwasher 1, first hook surface 47b may be formed on first rib 47a protruding outward from drain outlet 47, and drain hose holder 60 may be configured to have a first lower wall portion 73 and a second lower wall portion 83 formed opposite first rib 47a from the lower side, which is the downstream side in the drainage flow inside drain outlet 47.

[0065] According to this configuration, when the drain hose 50 is pulled, the force acting on the drain port 47 can be received by the lower wall portions 73, 83 of the drain hose holder 60 via the first rib 47a. This makes it possible to firmly prevent the drain hose from coming off. In particular, in this embodiment, the drain hose holder 60 is fixed to the air break device 40 by bolts or the like inserted into the mounting holes 79a, 89a. This makes it possible to firmly prevent the drain hose 50 from coming off.

[0066] Furthermore, as in this embodiment, the dishwasher 1 may be configured to include a recovery path 48 that recovers leaking water in the frame 13, and the drain hose holder 60 may be configured to have a connecting portion 76 that connects the internal space S1 of the drain hose holder 60 to the recovery path 48.

[0067] According to this configuration, even if drainage water leaks from the drain outlet 47 or the connection part 51 in the space S1 inside the drain hose holder 60, the leaked water can be collected in the underframe 13. Therefore, even if the drain outlet 47 and the drain hose 50 are connected outside the underframe 13, leakage of the drainage water to the outside can be suppressed.

[0068] Furthermore, as in this embodiment, in the dishwasher 1, the recovery path 48 and the drain port 47 may be provided in the air break device 40 in which the drain trap 46 is formed.

[0069] According to this configuration, it is possible to prevent the drainage water from leaking to the outside, even if the drain outlet 47 is provided outside the underframe 13 in order to avoid creating a trap in the drain hose 50. Therefore, it is possible to prevent the drainage water from leaking to the outside while stabilizing the shape of the drain trap 46.

[0070] In this embodiment, dishwasher 1 connects drain outlet 47 and connection part 51 of drain hose 50 outside frame 13, and is provided with a drain hose holder 60 that covers drain outlet 47 and connection part 51, and a recovery path 48 that recovers leaking water in frame 13, and drain hose holder 60 is formed with a connecting part 76 that connects the internal space S1 of drain hose holder 60 to recovery path 48.

[0071] According to this configuration, even if drainage water leaks from the drain outlet 47 or the connection part 51 in the space S1 inside the drain hose holder 60, the leaked water can be collected in the underframe 13. Therefore, even if the drain outlet 47 and the drain hose 50 are connected outside the underframe 13, leakage of the drainage water to the outside can be suppressed.

[0072] (Other embodiments) As described above, the first embodiment has been described as an example of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are made. In addition, it is also possible to combine the components described in the first embodiment to create new embodiments. Therefore, other embodiments will be exemplified below.

[0073] In the above embodiment, the first hook surface 47b and the second hook surface 53a formed as surfaces have been described as an example of the first hook portion and the second hook portion, but this is just one example. In the above embodiment, the lower surface 72a, 82a and the upper surface 75a, 85a formed as surfaces have been described as an example of the first retaining portion and the second retaining portion, but this is just one example. The first hook portion only needs to be hooked on the first retaining portion, and the second hook portion only needs to be configured to be hooked on the second retaining portion. For example, the first hook portion, the second hook portion, the first retaining portion, and the second retaining portion may be formed in a shape other than a surface, such as a hook shape.

[0074] In the above embodiment, the first hook surface 47a, which is the upper surface of the first rib 47a formed on the drain outlet 47, has been described as an example of the first hook portion, but the first hook portion is not limited to this. For example, a groove recessed radially inward may be formed on the outer surface of the drain outlet 47, and the surface of the inner surface of this groove facing upward may be the first hook portion. In this case, a rib that protrudes radially inward and is inserted into the groove may be formed on the inner surface of the drain hose holder 60, and the lower surface of the rib may be configured as the first retaining portion.

[0075] In the above embodiment, the second hook surface 53a, which is the lower surface of the second rib 53 provided on the connection portion 51 of the drain hose 50, has been described as an example of the second hook portion, but the second hook portion is not limited to this. For example, a groove recessed radially inward may be formed on the outer surface of the connection portion 51, and the surface of the inner surface of this groove facing downward may be the second hook portion. In this case, a rib that protrudes radially inward and is inserted into the groove may be formed on the inner surface of the drain hose holder 60, and the upper surface of this rib may be configured as the second retaining portion. In other words, the first hook portion, the second hook portion, the first retaining portion, and the second retaining portion may each be formed as the inner surface of the groove or the outer surface of the rib.

[0076] In the above embodiment, the drain outlet 47 is described as being at approximately the same position as the rear end of the underframe 13 in the front-rear direction, but this is one example. The drain outlet 47 may be located, for example, outside the underframe 13 in a plan view. In the above embodiment, the drain outlet 47 is described as being provided in the air break device 40, but this is one example. For example, the drain outlet may be provided inside the housing 10 without the air break device 40, and the drain outlet and the drain hose 50 may be connected inside the housing 10. In this case, the drain outlet has the same shape as the drain outlet 47 in the first embodiment, and the drain outlet and the drain hose 50 are prevented from coming off by the drain hose holder 60, as in the first embodiment. In this case, since the drain hose holder 60 is inside the housing 10, the leaked water that flows into the drain hose holder 60 is directly collected in the cleaning tank 12 through a collection path inside the drain hose holder 60.

[0077] In the above embodiment, the drain outlet 47 is described as being directed downward, but this is just one example. The angle of the drain outlet 47 may be any angle as long as a trap is not formed in the drain hose 50. For this reason, the drain outlet 47 may be directed, for example, diagonally downward and rearward.

[0078] In the above embodiment, the dishwasher 1 is described as a built-in type front-opening dishwasher, but the application of the present disclosure is not limited to this. For example, the dishwasher 1 may be a built-in type drawer-type dishwasher. Furthermore, the dishwasher 1 may be a countertop type dishwasher. However, when the dishwasher 1 is a built-in type, it is difficult to visually check for water leakage, and it is difficult to notice when water leakage occurs, so the present disclosure is particularly suitable for application to built-in type dishwashers.

[0079] It should be noted that the above-described embodiments are intended to illustrate the technology of the present disclosure, and various modifications, substitutions, additions, omissions, and the like can be made within the scope of the claims or their equivalents.

[0080] [Configuration supported by the above embodiment] The above embodiment supports the following configurations.

[0081] (Additional Note) (Technology 1) A dishwasher in which a drain outlet and a connection part of a drain hose are connected outside a frame, the dishwasher being provided with a drain hose holder covering the drain outlet and the connection part, the drain outlet being formed with a first hook part facing the upstream side of the drain flow inside the drain outlet, the connection part being formed with a second hook part facing the downstream side of the drain flow inside the connection part, and the drain hose holder being formed with a first anti-slip part facing the first hook part and a second anti-slip part facing the second hook part. This restricts movement of the connection part when the drain hose is pulled, making it difficult for the drain hose to come out of the drain outlet. Therefore, even if the drain outlet and the drain hose are connected outside the frame, leakage of drainage to the outside can be suppressed.

[0082] (Technology 2) A dishwasher as described in Technology 1, in which the first hook portion is formed on a first rib that protrudes outward from the drain outlet, and the drain hose holder is formed with a third anti-slip portion that faces the first rib from the downstream side of the drain flow inside the drain outlet. With this, when the drain hose is pulled, the force acting on the drain port can be received by the third retaining portion of the drain hose holder via the first rib, thereby providing strong retention.

[0083] (Technology 3) A dishwasher as described in Technology 1 or 2, which is provided with a collection path that collects leaked water in the frame, and the drain hose holder is formed with a connecting portion that connects the internal space of the drain hose holder to the collection path. This allows the drainage water to be collected in the underframe even if the drainage water leaks from the drain outlet or the connection in the space inside the drain hose holder. Therefore, even if the drain outlet and the drain hose are connected outside the underframe, leakage of the drainage water to the outside can be suppressed.

[0084] (Technical 4) The dishwasher according to Technical 3, wherein the recovery path and the drain outlet are provided in an air break device having a drain trap formed therein. This makes it possible to prevent the drainage water from leaking to the outside, even if the drain outlet is provided on the outside of the underframe in order to avoid creating a trap in the drain hose. Therefore, it is possible to prevent the drainage water from leaking to the outside while stabilizing the shape of the drain trap.

[0085] (Technology 5) A dishwasher in which a drain outlet and a drain hose connection part are connected outside a frame, the dishwasher comprising: a drain hose holder that covers the drain outlet and the connection part; and a recovery path that recovers leaked water in the frame, the drain hose holder having a connecting part that connects the internal space of the drain hose holder to the recovery path. This allows the leaked water to be collected in the underframe even if the drainage water leaks from the drain outlet or the connection in the space inside the drain hose holder. Therefore, even if the drain outlet and the drain hose are connected outside the underframe, leakage of the drainage water to the outside can be suppressed. [Industrial Applicability]

[0086] The present disclosure is applicable to dishwashers, particularly to built-in dishwashers installed in system kitchens. [Explanation of symbols]

[0087] 1 Dishwasher 10. Chassis 11 Door body 12 Cleaning tank 13 Frame 13a Water leak detection sensor 14 Injection nozzle 15 Water supply hose 16 Internal drain hose 20 Cleaning Basket 40 Air Break Device 41 Front cover 42 Main Body 43 Water Supply Route 43a Internal communication hole 43b Water supply connection 44 Atmospheric vent 44a Water supply side open passage 44b Drain side open passage 45 Drainage route 45a Drainage connection 46 Drain Trap 46a Drainage section 47 Drain 47a 1st Rib 47b First hook surface (first hook portion) 48 Recovery Route 48a Holder connection part 48b Frame connection 50 Drain hose 51 Connection 53 Second Rib 53a Second hook surface (second hook portion) 60 Drain hose holder 70 First member 71 First peripheral wall part 72 1st upper wall section 72a: First lower surface portion (first retaining portion) 73 First lower wall portion (third retaining portion) 73a Notch 74 First Groove 75 First step 75a First upper surface portion (second retaining portion) 76 Connecting part 76a Contact surface 76b Contact surface 77 First bulge 78 Claw 79 First mounting part 79a Mounting hole 80 Second member 81 Second peripheral wall part 82 Second upper wall section 82a Second lower surface portion (first retaining portion) 83 Second lower wall portion (third retaining portion) 83a Cutout 84 Second groove 85 Second step 85a Second upper surface portion (second retaining portion) 86 Protrusion 87 Second bulge 88 Fitting part 88a hole 89 Second mounting part 89a Second mounting hole B-Band P Drainage riser pipe S1 space S2 connecting passage

Claims

1. In a dishwasher in which the drain outlet and the drain hose connection part are connected outside the frame, a drain hose holder for covering the drain outlet and the connection portion; The drain outlet is formed with a first hook portion facing the upstream side of the drain flow inside the drain outlet, The connection portion is formed with a second hook portion facing the downstream side of the drainage flow inside the connection portion, The drain hose holder is formed with a first retaining portion facing the first hook portion and a second retaining portion facing the second hook portion. dishwasher.

2. The first hook portion is formed on a first rib that protrudes outward from the drain outlet, The drain hose holder is formed with a third retaining portion that faces the first rib from the downstream side of the drain flow inside the drain port.

2. The dishwasher of claim 1.

3. A recovery path is provided for recovering leaked water in the frame, The drain hose holder is formed with a connection portion that communicates an internal space of the drain hose holder with the recovery path.

3. A dishwasher according to claim 1 or 2.

4. The recovery path and the drain outlet are provided in an air break device having a drain trap formed therein.

4. A dishwasher according to claim 3.

5. In a dishwasher in which the drain outlet and the drain hose connection part are connected outside the frame, a drain hose holder that covers the drain outlet and the connection portion; A recovery path for recovering leaked water in the frame, The drain hose holder is formed with a connection portion that communicates an internal space of the drain hose holder with the recovery path. dishwasher.

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