JP2022126081A - dishwasher - Google Patents

Abstract

To provide a dishwasher capable of well suppressing invasion of water to a seal part of a washing tank as compared to a conventional product.SOLUTION: A dishwasher includes a washing tank 100 inside of which dishes are washed. The washing tank 100 includes a bottom part member 110 constituting a bottom part, a side part member 120 constituting a side face, a seal part 130 for sealing a part between an upper end part of the bottom part member 110 and a lower end part of the side part member 120, a first rib 141 extending upward from the upper end part of the bottom part member 110, which is disposed closer to an inner side of the washing tank 100 than the seal part 130 with a space from the seal part 130, and a second rib 142 extending downward from the lower end part of the side part member, which is disposed between the seal part 130 and the first rib 141. A trap structure is composed of the first rib 141, the second rib 142, and the seal part 130.SELECTED DRAWING: Figure 8

Description

TECHNICAL FIELD The present disclosure relates to a dishwasher designed to suppress deterioration in sealing performance of a sealing portion of a washing tub.

A dishwasher is equipped with a washing tub in which washing of dishes takes place. Further, a conventional washing tank is known to be divided into a bottom member forming the bottom of the washing tank and a side member forming the side surface of the washing tank. The washing tank divided in this way has a sealing portion for sealing between the upper end of the bottom member and the lower end of the side member. Here, when water enters the seal portion, the sealing performance of the seal portion is deteriorated. For this reason, a conventional dishwasher equipped with a washing tank divided into a bottom member and a side member has been proposed to suppress water from entering the sealing portion (see Patent Document 1).

Specifically, conventional dishwashers designed to prevent water from entering the sealing portion are provided with shielding ribs arranged at a position closer to the inner side of the washing tub than the sealing portion. In addition, a conventional dishwasher designed to suppress deterioration of the sealing performance of the seal portion has a collection mechanism that prevents water from rising due to capillary action and reaching the seal portion between the seal portion and the shielding rib. A space is formed. A conventional dishwasher designed to prevent water from entering the seal portion has such a structure to prevent water from entering the seal portion.

Japanese Patent No. 5141697

In conventional dishwashers designed to prevent water from entering the sealing portion, the capillary action that occurs near the tip of the shielding rib makes it impossible to discharge the water accumulated in the collection space. For this reason, for example, in a conventional dishwasher designed to suppress the deterioration of the sealing performance of the sealing portion, when the washing tank is subjected to vibration or impact by a user or the like, water enters the collection space, causing water to enter the collection space. The amount of water inside increases. In addition, for example, in conventional dishwashers designed to suppress the deterioration of the sealing performance of the sealing portion, water is trapped in the collection space due to vibrations generated during washing of dishes or an increase in internal pressure due to temperature changes in the washing tank. will enter and the amount of water in the collection space will increase. In the conventional dishwasher designed to suppress the deterioration of the sealing performance of the seal portion, as the amount of water in the recovery space increases, the water in the recovery space eventually enters the seal portion. put away. As described above, conventional dishwashers designed to suppress the intrusion of water into the seal portion have the problem that the intrusion of water into the seal portion cannot be sufficiently suppressed.

The present disclosure is intended to solve the above-described problems, and an object thereof is to provide a dishwasher capable of suppressing water from entering the sealing portion of the washing tub more than before.

A dishwasher according to the present disclosure includes a washing tank in which dishes are washed, and the washing tank includes a bottom member forming a bottom portion, a side member forming a side surface, and an upper end portion of the bottom member. a seal portion for sealing between the lower end portion of the side member; and a seal portion extending upward from the upper end portion of the bottom member, spaced apart from the seal portion, and closer to the inside of the cleaning tank than the seal portion. a first rib disposed; and a second rib extending downward from the lower end portion of the side member and disposed between the seal portion and the first rib, wherein the first rib, the A trap structure is configured by the second rib and the seal portion.

In the dishwasher according to the present disclosure, when the trap structure is filled with water, a closed space is formed between the water storage portion of the trap structure and the seal portion. Therefore, in the dishwasher according to the present disclosure, the water level within the trap structure does not increase after the closed space is formed. Therefore, the dishwasher according to the present disclosure can suppress water from entering the sealing portion of the washing tub more than before.

Fig. 2 is a vertical cross-sectional view of the dishwasher according to the present embodiment as viewed from the right side; 1 is a front view of a dishwasher according to an embodiment; FIG. Fig. 2 is a perspective view of the configuration around the washing tank in the dishwasher according to the present embodiment, viewed from the front right side; Fig. 2 is an exploded perspective view of the washing tub of the dishwasher according to the present embodiment, viewed from the front right side; Fig. 2 is an exploded perspective view of the washing tub of the dishwasher according to the present embodiment cut along a vertical cross section parallel to the left-right direction and viewed from the front right side; FIG. 3 is a cross-sectional view of the main part showing the periphery of the sealing portion of the washing tub of the dishwasher according to the present embodiment; FIG. 3 is a cross-sectional view of the main part showing the periphery of the sealing portion of the washing tub of the dishwasher according to the present embodiment; FIG. 4 is a cross-sectional view of the main part showing the periphery of the sealing portion of the washing tub of the dishwasher according to the present embodiment, and showing a state in which the trap structure is filled with water.

An example of a dishwasher according to the present disclosure will be described in the following embodiments. Note that the dishwasher according to the present disclosure is not limited to the configurations described in the following embodiments. In addition, in the drawings shown in the following embodiments, the relationship of the size of each component and the like may differ from the actual manufacturing of the dishwasher according to the present disclosure. In addition, in the following embodiments, directional terms are appropriately used to facilitate understanding of the example of the dishwasher according to the present disclosure. However, the directions shown in the following embodiments are used to describe an example dishwasher according to the present disclosure. The directions shown in the following embodiments do not limit the dishwasher according to the present disclosure. It should be noted that terms representing directions are, for example, "up", "down", "left", "right", "front", and "back".

Embodiment.
FIG. 1 is a longitudinal sectional view of the dishwasher according to the present embodiment as seen from the right side. That is, in FIG. 1, the left side of the paper surface is the front side of the dishwasher 1, that is, the front side.
The dishwasher 1 includes a washing tank 100 in which dishes 200 are washed. In this embodiment, the dishwasher 1 includes a dish basket 50 in which dishes 200 are placed. The dishes 200 placed in the dish basket 50 are accommodated in the washing tank 100 . Further, in this embodiment, the cleaning tank 100 has a substantially box-like shape, and at least a part of the bottom surface thereof is provided with a concave portion 101 that is vertically recessed downward.

Dishwasher 1 according to the present embodiment also includes outer shell 2 that accommodates washing tub 100 . In this embodiment, the outer shell 2 has, for example, a box shape, and an opening 2a is formed on the side surface. Specifically, the outer shell part 2 has a front surface, a back surface, a left side surface, and a right side surface as side surfaces. In the present embodiment, the outer shell 2 has an opening 2a formed on the front surface. The cleaning tank 100 is accommodated in the outer shell part 2 so as to be able to be put in and taken out from the opening part 2a.

Specifically, a fixed rail 22 is attached to the outer shell 2 . In addition, a movable rail (not shown) movably provided on the fixed rail 22 is attached to the cleaning tank 100 . As a result, the cleaning tank 100 can be put in and taken out through the opening 2a. In this embodiment, the outer shell 2 is provided with a holding mechanism 21 for holding the cleaning tank 100 inside the outer shell 2 so that the cleaning tank 100 does not move outside the opening 2a except when necessary. It is Specifically, when the cleaning tank 100 is pushed into the outer shell 2 to a predetermined holding position, the holding mechanism 21 holds the washing tank 100 at the predetermined position. At this time, the holding mechanism 21 is biased by a spring (not shown) so that the cleaning tank 100 does not move outside the opening 2a. As a result, the cleaning tank 100 is held at a predetermined position within the outer shell 2 by the holding mechanism 21 .

The dishwasher 1 according to this embodiment also includes a door 3 and a lid 4 . The door 3 is provided in front of the cleaning tank 100 and attached to the cleaning tank 100 . That is, the door 3 moves together with the cleaning tank 100 . The door 3 closes the opening 2a of the outer shell 2 when the cleaning tank 100 is accommodated in the outer shell 2 . The lid 4 opens and closes the opening 102 of the cleaning tank 100 . Specifically, the washing tank 100 according to the present embodiment has an opening 102 formed in the upper surface thereof so that the tableware 200 can be accommodated in the washing tank 100 from above the washing tank 100 . The lid 4 closes the opening 102 formed in the upper surface of the cleaning tank 100 when the cleaning tank 100 is accommodated in the outer shell 2 .

Specifically, one end of a link mechanism (not shown) is attached to the lid 4 . The other end of this link mechanism is attached inside the upper surface of the shell portion 2 . By this link mechanism, the lid 4 is lifted when the cleaning tank 100 is pulled out from the outer shell 2, so that the opening 102 of the cleaning tank 100 can be opened. Further, this link mechanism prevents the lid 4 from being pulled out from the outer shell 2 together with the cleaning tank 100 when the cleaning tank 100 is pulled out from the outer shell 2 . On the other hand, when the cleaning tank 100 is housed in the outer shell 2, the lid 4 is lowered by the link mechanism so that the opening 102 of the cleaning tank 100 can be closed.

Further, the dishwasher 1 according to the present embodiment includes a water supply valve 15, a water level detection device 16, a water temperature detection device 17, a water heater 18, a pressure pump 19, a drain pump 20, a drying heater 23, a drying blower 24, and a controller 14 .

The water supply valve 15 is provided inside the outer shell 2 and outside the cleaning tank 100 . The water supply valve 15 supplies water into the cleaning tank 100 . In the present embodiment, the dishwasher 1 performs a washing step and a rinsing step after the washing step when washing the tableware 200 . In the washing process for washing the tableware 200 , the water supply valve 15 supplies washing water containing detergent in tap water into the washing tank 100 . Further, in the rinsing step of rinsing the tableware 200, the water supply valve 15 supplies tap water into the washing tank 100 as rinsing water.

The water level detection device 16 detects the level of water in the cleaning tank 100 that accumulates in the cleaning tank 100 . In this embodiment, the water level detection device 16 is provided on the side surface of the concave portion 101 of the cleaning tank 100 . A water temperature detection device 17 detects the temperature of the water in the cleaning tank 100 . In this embodiment, the water temperature detector 17 is provided at the bottom of the recess 101 of the cleaning tank 100 . The kettle heater 18 heats the water in the cleaning tank 100 . In this embodiment, the water heater 18 is provided in the recess 101 of the cleaning tank 100 and heats the water accumulated in the recess 101 .

The pressure pump 19 is provided inside the outer shell 2 and outside the cleaning tank 100 . The pressurizing pump 19 is connected to the recess 101 of the cleaning tank 100 via a pipe 19a. The pressure pump 19 sends the water accumulated in the recess 101 through the shaft portion 30 to the cleaning nozzle 40 provided inside the cleaning tank 100 . Thereby, the water sent to the washing nozzle 40 is jetted toward the tableware 200 from the injection port of the washing nozzle 40 . Specifically, during the washing process of the tableware 200 , the pressurizing pump 19 sends washing water accumulated in the concave portion 101 to the washing nozzle 40 . As a result, washing water is jetted toward the tableware 200 from the injection port of the washing nozzle 40, and the tableware 200 is washed. Also, during the process of rinsing the tableware 200 , the pressure pump 19 sends the rinsing water accumulated in the recess 101 to the washing nozzle 40 . Thereby, the rinsing water is jetted toward the tableware 200 from the injection port of the washing nozzle 40, and the tableware 200 is rinsed. A detailed configuration of the cleaning nozzle 40 will be described later.

The drainage pump 20 is provided inside the outer shell 2 and outside the cleaning tank 100 . The drain pump 20 is connected to the recess 101 of the cleaning tank 100 via a drain pipe 20a. The drain pump 20 discharges water accumulated in the recess 101 to the outside of the dishwasher 1 .

The drying heater 23 heats the air supplied to the cleaning tank 100 . The drying blower 24 supplies the air heated by the drying heater 23 to the cleaning tank 100 . In this embodiment, the drying heater 23 and the drying blower 24 are provided inside the outer shell 2 and outside the cleaning tank 100 . Specifically, the drying heater 23 and the drying blower 24 are provided behind the cleaning tank 100 .

The control device 14 controls operations of the dishwasher 1 . In this embodiment, the control device 14 is provided in the space between the rear surface of the door 3 and the front surface of the cleaning tank 100 . The control device 14 is composed of dedicated hardware or a CPU (Central Processing Unit) that executes a program stored in a memory. Note that the CPU is also called a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, or a processor.

FIG. 2 is a front view of the dishwasher according to this embodiment.
As described above, the door 3 opens and closes the opening 2a formed in the front surface of the outer shell 2. As shown in FIG. That is, the door 3 is arranged in front of the dishwasher 1 . This door 3 has an operation panel 10 on the top.

The operation panel 10 has an operation section 11 on the right side. The operation unit 11 receives input of an operation instruction from a user and outputs an operation signal corresponding to the instruction to the control device 14 . In this embodiment, the operation unit 11 includes a power switch 12 for turning on the power of the dishwasher 1 and an operation switch 13 for starting or temporarily stopping the operation of the dishwasher 1 . Further, the operation panel 10 has a hand portion 6 at a substantially central position in the left-right direction. The hand portion 6 is a place where a hand is put when pulling out the cleaning tank 100 to the front side. Further, the operation panel 10 is provided with an exhaust port 3a for discharging the air in the washing tank 100 to the outside of the dishwasher 1 on the left side.

FIG. 3 is a perspective view of the configuration around the washing tub in the dishwasher according to the present embodiment, viewed from the front right side. In addition, in FIG. 3, a part of cleaning tank is shown as a cross section.
A cleaning nozzle 40 is provided inside the cleaning tank 100 . Specifically, the cleaning nozzle 40 is provided in the cleaning tank 100 near the bottom of the cleaning tank 100 . The cleaning nozzle 40 is detachably attached to the shaft portion 30 so as to cover the shaft portion 30 provided at the center of the bottom surface of the cleaning tank 100 from above. Also, the cleaning nozzle 40 is rotatably supported by the shaft portion 30 .

A cleaning nozzle 40 according to this embodiment includes an upper nozzle 41 and a lower nozzle 42 . The upper nozzle 41 is provided at a position that overlaps with the shaft portion 30 in a plan view, that is, at a position that is the center of rotation of the cleaning nozzle 40, and protrudes upward. An injection port 41 a is formed in the upper portion of the upper nozzle 41 . The lower nozzle 42 extends horizontally from the rotation center of the cleaning nozzle 40 . A plurality of injection ports 42a are formed at intervals on the upper surface of the lower nozzle 42 .

Next, a detailed configuration of the cleaning tank 100 according to this embodiment will be described.

FIG. 4 is an exploded perspective view of the washing tub of the dishwasher according to the present embodiment, viewed from the front right side.
The cleaning tank 100 includes a bottom member 110 forming a bottom portion and side members 120 forming side surfaces. As will be described later with reference to FIGS. 5 to 7, the cleaning tank 100 includes a sealing portion 130 for sealing between the upper end portion 111 of the bottom member 110 and the lower end portion 121 of the side member 120. As shown in FIG. The bottom member 110 is shaped like a bottomed tray. Therefore, the upper end portion 111 of the bottom member 110 is formed over the entire outer periphery of the bottom member 110 and has a frame shape. The side member 120 has the above-described opening 102 formed on the upper surface thereof, and is formed in a rectangular tubular shape. Therefore, the lower end portion 121 of the side member 120 is formed over the entire outer circumference of the side member 120 . Therefore, the seal portion 130 seals the entire circumference between the bottom member 110 and the side member 120 . In other words, in the present embodiment, seal portion 130 ensures the watertightness of the entire periphery between bottom member 110 and side member 120 . The bottom member 110 and the side members 120 are made of thermoplastic resin such as polypropylene, for example. However, the materials of the bottom member 110 and the side members 120 are not particularly limited, and the bottom member 110 and the side members 120 may be made of materials other than thermoplastic resin.

FIG. 5 is an exploded perspective view of the washing tub of the dishwasher according to the present embodiment taken along a vertical cross section parallel to the left-right direction and viewed from the front right side. 6 and 7 are cross-sectional views of essential parts showing the periphery of the sealing portion of the washing tub of the dishwasher according to the present embodiment. 6 is a drawing of the periphery of the seal portion 130 taken along a vertical cross section passing through point A shown in FIG. 5 parallel to the left-right direction. FIG. 7 is a drawing of the periphery of the seal portion 130 taken along a vertical cross section that is parallel to the left-right direction and passes through point B shown in FIG.
The detailed configuration around the seal portion 130 will be described below with reference to FIGS. 5 to 7. FIG.

The cleaning tank 100 according to this embodiment includes first ribs 141 and second ribs 142 . The first rib 141 extends upward from the upper end portion 111 of the bottom member 110 , is spaced apart from the seal portion 130 , and is disposed closer to the inside of the cleaning tank 100 than the seal portion 130 . Specifically, the first ribs 141 are arranged along the entire inner periphery of the cleaning tank 100 . That is, in plan view, a groove is formed in the entire circumference of the cleaning tank 100 between the seal portion 130 and the first rib 141 . The groove is hereinafter referred to as a trap groove 144 . Also, the space between the trap groove 144 and the seal portion 130 is referred to as a trap structure secondary side space 146 . In addition, in the present embodiment, the first rib 141 is integrally formed with the bottom member 110 .

The second rib 142 extends downward from the lower end portion 121 of the side member 120 and is arranged between the seal portion 130 and the first rib 141 . In addition, in the present embodiment, the second rib 142 is integrally formed with the side member 120 . That is, the second rib 142 is arranged in the trap groove 144 . Therefore, in cleaning tank 100 according to the present embodiment, trap structure 150 is configured by first rib 141 , second rib 142 and seal portion 130 . In other words, in cleaning tank 100 according to the present embodiment, trap groove 144 has trap structure 150 .

In addition, in the present embodiment, the seal portion 130 has the following configuration. The seal portion 130 includes an outer peripheral rib 131 , an inner peripheral rib 132 , a seal member 134 and a seal rib 135 . Peripheral rib 131 extends upward from upper end 111 of bottom member 110 . The outer peripheral rib 131 is formed over the entire outer periphery of the bottom member 110 . The inner peripheral rib 132 extends upward from the upper end portion 111 of the bottom member 110 , is spaced apart from the outer peripheral rib 131 , and is arranged on the inner side of the cleaning tank 100 relative to the outer peripheral rib 131 . The inner peripheral rib 132 is formed over the entire outer periphery of the bottom member 110 . That is, an annular groove 133 is formed between the outer peripheral rib 131 and the inner peripheral rib 132 . A sealing member 134 made of an elastic material such as rubber is provided in the groove 133 .

Seal rib 135 extends downward from lower end 121 of side member 120 and presses seal member 134 . The seal rib 135 is formed over the entire outer circumference of the side member 120 . In the present embodiment, the seal portion 130 having such a configuration seals the entire circumference between the bottom member 110 and the side member 120 . In other words, in the present embodiment, the sealing portion 130 having such a configuration ensures the watertightness of the entire periphery between the bottom member 110 and the side member 120 . Moreover, in the present embodiment, the trap structure 150 is configured by the first rib 141 , the second rib 142 , and the inner peripheral rib 132 of the seal portion 130 . In addition, in the present embodiment, the outer peripheral rib 131 and the inner peripheral rib 132 are integrally formed with the bottom member 110 . Also, the seal rib 135 is integrally formed with the side member 120 .

Here, the upper end 132a of the inner peripheral rib 132 is preferably arranged above the upper end 141a of the first rib 141. As shown in FIG. Moreover, it is preferable that the upper end 131 a of the outer peripheral rib 131 is arranged above the upper end 132 a of the inner peripheral rib 132 .

Moreover, it is preferable that a part of the second rib 142 is in contact with the bottom member 110 . In the present embodiment, lower ends 142 a of second ribs 142 are configured to contact bottom member 110 . A notch 143 is formed in part of the lower end 142 a of the second rib 142 . Thereby, a portion of the lower end 142 a of the second rib 142 contacts the bottom member 110 . Further, by forming the notch 143, the first rib 141 side of the trap groove 144 and the inner circumferential rib 132 side of the trap groove 144 communicate with each other even in a configuration in which the lower end 142a of the second rib 142 is in contact with the bottom member 110. As a result, water can be stored in the trap groove 144 as described later.

Moreover, it is preferable that the upper end 141a of the first rib 141 is arranged above the level of the water that accumulates inside the washing tank 100 when the tableware 200 is washed. That is, as shown in FIG. 6, the upper ends 141a of the first ribs 141 are preferably arranged above the water level 301 of the cleaning water 300 accumulated inside the cleaning tank 100. As shown in FIG.

Also, the upper end 141 a of the first rib 141 is preferably arranged below the injection port of the cleaning nozzle 40 . Specifically, in the cleaning nozzle 40 according to the present embodiment, the upper nozzle 41 is formed with an injection port 41a, and the lower nozzle 42 is formed with an injection port 42a. The injection port 42 a of the lower nozzle 42 is arranged below the injection port 41 a of the upper nozzle 41 . In such a case, the upper end 141a of the first rib 141 is preferably arranged below the injection port 42a.

In addition, it is preferable that the cleaning tank 100 includes shielding ribs 145 . This shielding rib 145 is provided, for example, on the second rib 142 . The shielding rib 145 covers the space formed between the first rib 141 and the second rib 142 in plan view. In other words, the shielding rib 145 covers the space formed between the first rib 141 and the second rib 142 from above. A predetermined gap is provided between the lower surface of the shielding rib 145 and the upper end 141a of the first rib 141 in order to allow water to flow between the shielding rib 145 and the first rib 141 . For example, in this embodiment, the gap between the lower surface of the shielding rib 145 and the upper end 141a of the first rib 141 is 0.1 mm to 0.3 mm.

Moreover, it is preferable that the side surface of the outer peripheral rib 131 on the seal rib 135 side has a shape that is inclined toward the outside of the cleaning tank 100 toward the upper end 131a. Moreover, it is preferable that the side surface of the seal rib 135 on the side of the outer peripheral rib 131 has a shape that is inclined toward the inside of the cleaning tank 100 toward the lower end. Moreover, it is preferable that the side surface of the seal rib 135 on the side of the inner peripheral rib 132 has a shape that is inclined toward the outside of the cleaning tank 100 toward the lower end. Moreover, it is preferable that the side surface of the inner circumferential rib 132 on the side of the seal rib 135 is inclined toward the inner side of the cleaning tank 100 toward the upper end 132a. By adopting such a configuration for at least one of the outer peripheral rib 131, the inner peripheral rib 132, and the seal rib 135, the seal rib 135 can be inserted into the groove 133 between the outer peripheral rib 131 and the inner peripheral rib 132. As a result, the assembly of the cleaning tank 100 is facilitated.

In addition, in this embodiment, the bottom member 110 and the side member 120 are connected as follows. Specifically, as shown in FIG. 7 , the side member 120 has an engaging portion 160 that faces the outer side surface of the outer peripheral rib 131 . The outer peripheral rib 131 has projections 160a projecting toward the engaging portion 160 at a plurality of locations. A hole 160b into which the protrusion 160a is inserted is formed at a position of the engaging portion 160 facing the protrusion 160a. Therefore, when the side member 120 is brought closer to the bottom member 110 from above, the engaging portion 160 is pushed by the convex portion 160a and elastically deformed. When the side member 120 is brought closer to the bottom member 110 from above, the projection 160a is inserted into the hole 160b of the engaging portion 160. As shown in FIG. Thereby, the engaging portion 160 and the convex portion 160a are engaged with each other, and the bottom member 110 and the side member 120 are connected. By connecting the bottom member 110 and the side members 120 in this way, the connection between the bottom member 110 and the side members 120 is facilitated.

Next, effects obtained by the washing tub 100 of the dishwasher 1 according to the present embodiment will be described.

FIG. 8 is a cross-sectional view of the main part showing the periphery of the sealing portion of the washing tub of the dishwasher according to the present embodiment, and shows a state in which the trap structure is filled with water. Note that FIG. 8 is a diagram in which the vicinity of the seal portion 130 is observed in the same cross section as in FIG. 7 . FIG. 8 also shows a state in which the trap structure 150 is filled with cleaning water 300 .

When the tableware 200 is washed inside the washing tank 100 , the water injected from the nozzles 41 a and 42 a of the washing nozzle 40 accumulates in the trap groove 144 , in other words, the trap structure 150 . When a certain amount of water accumulates in the trap structure 150, the trap structure secondary side space 146 between the trap groove 144 and the seal portion 130 is sandwiched between the water in the trap structure 150 and the seal portion 130, and becomes a closed space. Become. When the trap structure secondary space 146 becomes a closed space in this manner, the water level in the trap structure 150 will not increase any further. Therefore, dishwasher 1 according to the present embodiment can prevent water from entering seal portion 130 more than before. That is, dishwasher 1 according to the present embodiment can maintain the reliability of seal portion 130 for a longer period of time than in the past.

In addition, in the dishwasher 1 according to the present embodiment, the washing tub 100 is accommodated in the outer shell 2 so as to be able to be put in and taken out from the opening 2a of the outer shell 2. As shown in FIG. In conventional dishwashers in which the washing tank can be freely pulled in and out from the outer shell, water is likely to enter the sealing portion due to vibrations or impacts generated in the washing tank when the washing tank is pulled in and out from the outer shell. For this reason, the washing tank 100 according to the present embodiment, which is capable of suppressing the intrusion of water into the seal portion 130 more than conventionally, is adopted for the dishwasher 1 in which the washing tank 100 can be freely put in and taken out from the outer shell portion 2. is particularly effective.

Moreover, the seal portion 130 according to the present embodiment includes an outer peripheral rib 131 , an inner peripheral rib 132 , a seal member 134 and a seal rib 135 . That is, the seal portion 130 has a trap structure composed of the outer peripheral rib 131 , the inner peripheral rib 132 and the seal rib 135 . Therefore, even if the sealing function of the sealing member 134 is lost, the trap structure composed of the outer peripheral rib 131, the inner peripheral rib 132 and the sealing rib 135 prevents water leakage to the outside of the cleaning tank 100. can be suppressed. Moreover, since the trap structure does not require precise fitting, the assembly of the washing tub 100 can be facilitated, and the manufacturing cost of the dishwasher 1 can be reduced.

Further, in cleaning tank 100 according to the present embodiment, upper ends 132 a of inner circumferential rib 132 are arranged above upper ends 141 a of first ribs 141 . In the cleaning tank 100 configured as described above, the water level of the trap structure 150 is at most the height of the upper end 141a of the first rib 141 and lower than the upper end 132a of the inner peripheral rib 132 . Therefore, in the cleaning tank 100 configured as described above, the intrusion of water into the sealing portion 130 can be further suppressed, and the reliability of the sealing portion 130 is further improved.

Further, in cleaning tank 100 according to the present embodiment, upper ends 131 a of outer peripheral ribs 131 are arranged above upper ends 132 a of inner peripheral ribs 132 . As described above, if the sealing function of the sealing member 134 were to be impaired, there is a possibility that water would accumulate in the trap structure composed of the outer peripheral rib 131, the inner peripheral rib 132 and the sealing rib 135. FIG. At this time, when the upper end 131a of the outer peripheral rib 131 is arranged above the upper end 132a of the inner peripheral rib 132, the water level in the trap structure is at most the height of the upper end 132a of the inner peripheral rib 132. The position is lower than the upper end 131 a of the rib 131 . Therefore, in the cleaning tank 100 configured in this manner, water leakage to the outside of the cleaning tank 100 can be further suppressed.

Further, in cleaning tank 100 according to the present embodiment, second rib 142 partially contacts bottom member 110 . When the washing tank 100 is taken in and out from the outer shell 2 and when the dishes 200 are washed, etc., the washing tank 100 may vibrate and a downward force may act on the side member 120 . At this time, since a part of the second rib 142 is in contact with the bottom member 110 , the seal member 134 is not subjected to excessive pressing force from the seal rib 135 . Therefore, in the cleaning tank 100 configured as described above, the reliability of the sealing member 134 is improved.

Further, in the cleaning tank 100 according to the present embodiment, the upper ends 141 a of the first ribs 141 are arranged above the level of the water accumulated inside the cleaning tank 100 . In the cleaning tank 100 configured in this manner, it is possible to prevent the water level in the trap structure 150 from becoming equal to or higher than the upper ends 141 a of the first ribs 141 . Therefore, in the cleaning tank 100 configured as described above, the intrusion of water into the sealing portion 130 can be further suppressed, and the reliability of the sealing portion 130 is further improved.

In addition, in the cleaning tank 100 according to the present embodiment, the upper end 141a of the first rib 141 is arranged below the ejection port 41a and the ejection port 42a of the cleaning nozzle 40 . In the cleaning tank 100 configured in this manner, the water jetted from the jetting ports 41a and 42a easily accumulates in the trap structure 150, and the trap structure secondary space 146 can be easily maintained as a closed space. Therefore, in the cleaning tank 100 configured as described above, the intrusion of water into the sealing portion 130 can be further suppressed, and the reliability of the sealing portion 130 is further improved.

Further, cleaning tank 100 according to the present embodiment includes shielding rib 145 that covers the space formed between first rib 141 and second rib 142 in plan view. In the cleaning tank 100 configured in this manner, when water enters the trap structure 150, it is possible to prevent food residues contained in the water from entering the trap structure 150. FIG. Therefore, the washing tank 100 can be kept clean, and the reliability of the dishwasher 1 is improved.

As described above, the dishwasher 1 according to the present embodiment includes the washing tank 100 in which the dishes 200 are washed. The cleaning tank 100 includes a bottom member 110 , a side member 120 , a seal portion 130 , first ribs 141 and second ribs 142 . The bottom member 110 constitutes the bottom of the cleaning tank 100 . The side member 120 constitutes the side surface of the cleaning tank 100 . The seal portion 130 seals between the upper end portion 111 of the bottom member 110 and the lower end portion 121 of the side member 120 . The first rib 141 extends upward from the upper end portion 111 of the bottom member 110 , is spaced apart from the seal portion 130 , and is disposed closer to the inside of the cleaning tank 100 than the seal portion 130 . The second rib 142 extends downward from the lower end portion 121 of the side member 120 and is arranged between the seal portion 130 and the first rib 141 . In dishwasher 1 according to the present embodiment, first rib 141 , second rib 142 and seal portion 130 constitute trap structure 150 .

Dishwasher 1 according to the present embodiment configured as described above forms a closed space between the water storage portion of trap structure 150 and seal portion 130 when water is accumulated in trap structure 150 . Therefore, in dishwasher 1 according to the present embodiment, the water level in trap structure 150 does not increase after the sealed space is formed. Therefore, dishwasher 1 according to the present embodiment can prevent water from entering sealing portion 130 of washing tub 100 more than before.

1 dishwasher, 2 shell, 2a opening, 3 door, 3a exhaust port, 4 lid, 6 handle, 10 operation panel, 11 operation unit, 12 power switch, 13 operation switch, 14 control device, 15 water supply valve, 16 water level detector, 17 water temperature detector, 18 kettle heater, 19 pressurizing pump, 19a piping, 20 drainage pump, 20a drainage piping, 21 holding mechanism, 22 fixed rail, 23 drying heater, 24 drying blower, 30 shaft Part, 40 washing nozzle, 41 upper nozzle, 41a injection port, 42 lower nozzle, 42a injection port, 50 dish basket, 100 washing tank, 101 recessed portion, 102 opening, 110 bottom member, 111 upper end portion, 120 side member, 121 lower end portion 130 sealing portion 131 outer peripheral rib 131a upper end 132 inner peripheral rib 132a upper end 133 groove 134 sealing member 135 sealing rib 141 first rib 141a upper end 142 second rib 142a lower end 143 Notch 144 Trap groove 145 Shielding rib 146 Trap structure secondary side space 150 Trap structure 160 Engagement part 160a Convex part 160b Hole 200 Tableware 300 Washing water 301 Water level.

Claims (8)

Equipped with a washing tank where dishes are washed inside,
The cleaning tank is
a bottom member that forms the bottom;
a side member forming a side surface;
a seal portion that seals between the upper end portion of the bottom member and the lower end portion of the side member;
a first rib extending upward from the upper end portion of the bottom member, spaced apart from the seal portion, and disposed closer to the inner side of the cleaning tank than the seal portion;
a second rib extending downward from the lower end of the side member and disposed between the seal portion and the first rib;
with
A dishwasher, wherein a trap structure is configured by the first rib, the second rib, and the seal portion. Equipped with an outer shell with an opening formed on the side,
The dishwasher according to claim 1, wherein the washing tub is accommodated in the outer shell portion so as to be able to be put in and taken out from the opening portion. The seal portion is
a peripheral rib extending upwardly from the upper end of the bottom member;
an inner peripheral rib that extends upward from the upper end of the bottom member, is spaced apart from the outer peripheral rib, and is disposed closer to the inner side of the cleaning tank than the outer peripheral rib;
a sealing member provided in a groove formed between the outer peripheral rib and the inner peripheral rib;
a seal rib that extends downward from the lower end of the side member and presses the seal member;
with
The trap structure is configured by the first rib, the second rib and the inner peripheral rib,
The dishwasher according to claim 1 or 2, wherein the upper ends of the inner peripheral ribs are arranged above the upper ends of the first ribs. The dishwasher according to claim 3, wherein the upper ends of the outer peripheral ribs are arranged above the upper ends of the inner peripheral ribs. The dishwasher according to any one of claims 1 to 4, wherein a portion of the second rib is in contact with the bottom member. The dishwasher according to any one of claims 1 to 5, wherein the upper end of the first rib is arranged above the level of water that accumulates inside the washing tank during washing of the dishes. A washing nozzle is provided inside the washing tank and sprays water from the nozzle when washing the dishes,
The dishwasher according to any one of claims 1 to 6, wherein the upper end of the first rib is arranged below the injection port of the washing nozzle. The dishwasher according to any one of claims 1 to 7, further comprising a shielding rib that covers a space formed between the first rib and the second rib in plan view.

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