WO2021171841A1

WO2021171841A1 - Cleaning device

Info

Publication number: WO2021171841A1
Application number: PCT/JP2021/001955
Authority: WO
Inventors: 文隆掬川; 新海　清恭
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2020-02-28
Filing date: 2021-01-21
Publication date: 2021-09-02
Also published as: JPWO2021171841A1

Abstract

This cleaning device comprises: a case; a cleaning tank which is disposed inside the case and in which an item to be cleaned is accommodated; a detergent tank (30) which retains therein a liquid detergent to be supplied to the cleaning tank; and a foreign substance trapping part (70) which is provided to a detergent discharge outlet (71) of the detergent tank (30). The foreign substance trapping part (70) is configured to be removable in an outward direction of the detergent tank (30). With this configuration, it is possible to provide a cleaning device which makes it easy to remove foreign substances mixed in the detergent tank (30), and which can have improved convenience.

Description

Cleaning equipment

This disclosure relates to a cleaning device for cleaning an object to be cleaned.

Conventionally, the built-in type dishwasher used in the state of being incorporated in the system kitchen is mainly configured by fixing a washing tub having a door that can be opened and closed in the front inside the housing.

However, in recent years, a dishwasher that pulls out a washing tank having an opening at the top from a housing to store and wash tableware has become the mainstream (see, for example, Patent Document 1).

The dishwasher disclosed in Patent Document 1 is provided outside the washing tub, having an opening at the top, a washing tub for accommodating tableware, a housing for freely moving the washing tub in and out in the front-rear direction, and a washing tub. , A detergent inlet for pouring detergent into the washing tank, and a pouring route for communicating the detergent inlet and the washing tank are provided. Then, the detergent is added from a detergent inlet provided at a location independent of the washing tank. As a result, the detergent can be reliably added regardless of the size and shape of the tableware placed in the washing tank.

Further, a dishwasher equipped with a detergent storage container in the washing tank is disclosed (see, for example, Patent Document 2).

The dishwasher disclosed in Patent Document 2 has a detergent storage container that can be detachably or integrally attached to the inner wall of the washing tub. The detergent storage container is attached at approximately the same height as the water supply port of the washing water provided on the inner wall of the washing tank, or at a position above the water supply port. This prevents the detergent from spilling, spilling, or solidifying before starting the washing of the dishes and the like, and enables effective washing of the dishes and the like.

However, in the configuration of the dishwasher of Patent Document 1, when the detergent is poured from the upper opening, the detergent flows down to the washing tank as it is. That is, conventional dishwashers cannot stock detergent. Therefore, each time the dishwasher is used, the user must add the required amount of detergent into the washing tub.

Therefore, as disclosed in Patent Document 2, a configuration is conceivable in which a detergent storage container is detachably attached to the cleaning tank. However, when a foreign substance or the like is mixed in the detergent container, a technique capable of easily removing the mixed foreign substance is required.

Japanese Unexamined Patent Publication No. 2007-135650 Japanese Unexamined Patent Publication No. 2000-225087

The present disclosure provides a dishwasher that can improve the convenience of the washing device.

The cleaning device according to one aspect of the present invention includes a housing, a cleaning tank provided in the housing for accommodating an object to be cleaned, a detergent tank for storing liquid detergent supplied to the cleaning tank, and a detergent tank. It is provided with a foreign matter trap provided in the detergent discharge port of the above. The foreign matter trap is configured to be removable in the outward direction of the detergent tank.

According to the present disclosure, it is possible to provide a dishwasher that can improve the convenience of the washing device.

FIG. 1 is a schematic side view of the dishwasher in a state where the washing tank according to the first embodiment is pulled out from the housing. FIG. 2 is a schematic front view of the dishwasher showing a state in which the detergent tank of the first embodiment is being stored or pulled out. FIG. 3 is a schematic front view of the dishwasher showing a state in which the detergent tank of the first embodiment is stored. FIG. 4 is a schematic side view of the dishwasher according to another example in which the washing tank of the first embodiment is pulled out from the housing. FIG. 5 is a schematic front view of the dishwasher in the state where the detergent tank of the second embodiment is housed. FIG. 6 is a schematic side view of the dishwasher in a state where the washing tank according to the second embodiment is pulled out from the housing. FIG. 7 is a schematic side view of the dishwasher according to the third embodiment. FIG. 8 is a schematic front view of the dishwasher according to the third embodiment. FIG. 9 is a schematic front view of the dishwasher according to the third embodiment. FIG. 10 is a schematic front view of the dishwasher according to the third embodiment. FIG. 11 is a schematic front view of the dishwasher according to the third embodiment. FIG. 12A is a partially enlarged view showing a state in which the detergent tank is stored in the detergent tank storage portion. FIG. 12B is a partially enlarged view showing a state in which the detergent tank is stored in the detergent tank storage portion. FIG. 13 is a diagram schematically showing a cross section of the detergent tank. FIG. 14A is a diagram schematically showing a cross section of the detergent tank. FIG. 14B is a diagram schematically showing a cross section of the detergent tank. FIG. 15A is a diagram showing the lower surface of the cover of the detergent tank. FIG. 15B is a view showing the lower surface of the cover of the detergent tank. FIG. 15C is a diagram showing the lower surface of the cover of the detergent tank. FIG. 16 is a diagram schematically showing the relationship between the arm and the rotation shaft. FIG. 17A is a diagram schematically showing a cross section of an arm and a rotation shaft. FIG. 17B is a diagram schematically showing a cross section of an arm and a rotation shaft. FIG. 18 is a diagram showing a configuration of a control device for controlling the dishwasher according to the embodiment. FIG. 19 is a diagram showing the viscosity of the liquid detergent measured by a rotary viscometer. FIG. 20 is a flowchart showing a procedure of a dishwasher control method according to the embodiment. FIG. 21 is a flowchart showing a procedure of a dishwasher control method according to the embodiment. FIG. 22A is a diagram schematically showing another example of the detergent tank. FIG. 22B is a diagram schematically showing another example of the detergent tank. FIG. 23 is a diagram schematically showing a cross section of the foreign matter trapping portion. FIG. 24A is a diagram schematically showing a state in which the foreign matter trapping portion is attached to the detergent discharge port. FIG. 24B is a diagram schematically showing a state in which the foreign matter trapping portion is attached to the detergent discharge port. FIG. 24C is a diagram schematically showing a state in which the foreign matter trapping portion is attached to the detergent discharge port. FIG. 24D is a diagram schematically showing a state in which the foreign matter trapping portion is attached to the detergent discharge port. FIG. 25A is another diagram schematically showing a cross section of the foreign matter trapping portion. FIG. 25B is another diagram schematically showing a state in which the foreign matter trapping portion is attached to the detergent discharge port. FIG. 26 is another diagram schematically showing a state in which the foreign matter trapping portion is attached to the detergent discharge port. FIG. 27 is a diagram schematically showing a cross section when the detergent tank is stored in the detergent tank storage portion.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to this embodiment.

(Embodiment 1)
Hereinafter, the schematic configuration of the dishwasher of the first embodiment will be described with reference to FIG.

FIG. 1 is a schematic side view of the dishwasher in a state where the washing tank 1 in the first embodiment is pulled out from the housing 2. More specifically, FIG. 1 shows a schematic side view of the dishwasher's washing tub 1 pulled out from the dishwasher's housing 2.

The dishwasher of the first embodiment is, for example, a built-in dishwasher installed in a system kitchen or the like.

In the first embodiment, as shown in the drawing, the front direction is the direction in which the door body 3 and the cleaning tank 1 are pulled out, and the rear direction is the direction in which the cleaning tank 1 is stored and the door body 3 is closed. .. Further, the opening 1a side of the washing tub 1 of the dishwasher is upward, the opposite side is downward, the right side when viewed from the front of the door body 3 is the right side, and the left side is the left side.

As shown in FIG. 1, the dishwasher of the first embodiment has a housing 2, a washing tank 1, a side wall 12, a detergent tank 15, a control device 19, and a housing 2 arranged inside the housing 2. It has a door body 3 and the like that open and close the opening of the door.

The washing tank 1 has an opening 1a above, and a basket 7 for accommodating tableware 8 is arranged inside. The cleaning tank 1 includes a first rail 5 fixed downward. On the other hand, the housing 2 includes a second rail 6 fixed to the inside of the inner surface. The first rail 5 is movably supported by the second rail 6 of the housing 2. As a result, the cleaning tank 1 is supported in the front-rear direction (left-right direction on the paper surface of FIG. 1) so as to be freely taken in and out of the housing 2.

The cleaning tank 1 includes a flat surface portion 23 arranged in front of the opening 1a, which is the upper front portion on the outside. An operation unit 24, a display unit 25, and the like are arranged on the flat surface unit 23. The operation unit 24 is set by the user to set the washing course of the dishwasher, power on / off, and the like. The display unit 25 displays a cleaning status, an operating status, a time, and the like. Further, an operation display board (not shown) for controlling their operations is arranged on the back surface side of the flat surface unit 23 on which the operation unit 24 and the display unit 25 are arranged.

The side walls 12 are arranged on both sides between the cleaning tank 1 and the door body 3. The side wall 12 integrally movably connects the cleaning tank 1 and the door body 3. At this time, the dishwasher has a front space portion 13 formed by being partitioned by a front side of the washing tank 1, a rear surface side of the door body 3, a side wall 12 and a flat surface portion 23.

The door body 3 is provided with a handle 4 provided so as to project upward and forward. The handle 4 is gripped by the user and used to move the cleaning tank 1 in and out of the housing 2.

Further, in the dishwasher of the first embodiment, the washing water for washing the dishes in the washing tank 1 is supplied by the route shown below. Specifically, first, wash water such as tap water is supplied from a branch faucet or the like on a system kitchen (not shown) to a water supply path such as a water supply hose. The supplied washing water is supplied to the washing tank 1 with a required water level and a required amount by a water supply pump, a water supply valve, or the like (not shown) via a water supply path. The washing water is supplied into the washing tank 1 by the route configured as described above.

The cleaning tank 1 includes a circulation pump 9 arranged below the outside. The circulation pump 9 circulates the cleaning water supplied into the cleaning tank 1 through the circulation path, and injects the cleaning water from the cleaning nozzle 11. Then, the tableware 8 can be washed with the sprayed washing water. The heater 10 for heating the washing water is also arranged near the bottom of the washing tank 1.

Further, the dishwasher of the first embodiment includes a drainage route for draining the washing water from the washing tank 1. The drainage route is composed of a drainage pump and a drainage hose (not shown). Then, when the washing and rinsing of the tableware 8 is completed, the drainage pump is driven, and the washing water is drained to the outside through the drainage hose. That is, the drainage route is configured so that the wash water in the wash tank 1 can be drained to the sink of the system kitchen or the like.

The cleaning tank 1 is arranged in the front space portion 13 which is the front outside, and includes a detergent tank storage portion 14 in which the detergent tank 15 can be freely taken in and out. The detergent tank storage portion 14 is formed on one side of the side wall 12 by welding, screwing, or integrally molding with the side wall 12. The detergent tank storage unit 14 may be provided on the front surface of the cleaning tank 1.

As described above, the dishwasher of the first embodiment is configured.

Next, the configuration around the detergent tank 15 of the dishwasher will be described with reference to FIGS. 2 and 3.

FIG. 2 is a schematic front view of the dishwasher showing a state in which the detergent tank 15 is being stored or pulled out. FIG. 3 is a schematic front view of the dishwasher showing a state in which the detergent tank 15 is stored.

As shown in FIGS. 2 and 3, the detergent tank storage portion 14 has a hollow space. The detergent tank 15 is freely stored in and out of the space of the detergent tank storage unit 14. The detergent tank 15 is stored so as to be freely taken in and out, for example, in the left-right direction (side) when viewed from the front (front side of the door body 3).

Further, as shown in FIG. 1, the detergent tank storage portion 14 is substantially below (including below) the flat surface portion 23 (operation unit 24 or display unit 25), for example, to the right from the central portion side of the cleaning tank 1. It is arranged on the side and stores the detergent tank 15.

Note that FIGS. 2 and 3 show an example of a configuration in which the detergent tank 15 is pulled out from the detergent tank storage unit 14 to the right, but the present invention is not limited to this. For example, the detergent tank storage unit 14 and the detergent tank 15 may be arranged at positions symmetrically opposite to those in FIGS. 2 and 3. In this case, it is desirable that the detergent tank 15 is pulled out from the detergent tank storage portion 14 to the left.

With the above configuration, the detergent tank 15 is not conspicuous when the cleaning tank 1 is completely housed in the housing 2. Therefore, the dishwasher can be configured with a simple design. Further, the space (front space portion 13) for accommodating the detergent tank 15 on the outer front side of the cleaning tank 1 can be effectively utilized.

Further, as shown in FIG. 1, the detergent tank 15 is pulled out from the detergent tank storage portion 14 in the left-right direction in a state where the cleaning tank 1 is pulled out forward by at least a distance a (dotted line arrow in FIG. 1) or more. It is configured to be freely put in and taken out. The distance a indicates the shortest distance between the mating surface between the back surface of the door body 3 and the frontmost surface of the housing 2 and the surface of the detergent tank storage unit 14 on the cleaning tank 1 side. That is, the distance a indicates a state in which at least the entire detergent tank storage portion 14 is pulled out to the front side from the frontmost portion of the housing 2.

With the above configuration, the detergent tank 15 can be taken in and out for the first time when the cleaning tank 1 is pulled out by a predetermined distance (distance a) or more in the forward direction. Therefore, the user can easily put in and take out the detergent tank 15 by utilizing the space in front of the cleaning tank 1 for storing the detergent tank 15 and the space in the lateral direction when the cleaning tank 1 is pulled out from the housing 2. can. The distance a is not particularly limited as long as the detergent tank 15 can be taken in and out in the left-right direction.

Further, as described above, the dishwasher of the first embodiment is provided on the outer front upper part of the washing tank 1, and has an operation unit 24 for which the user sets the washing course, power on / off, and the like. As a result, the user can operate the operation unit 24 with one hand, for example, from the front and above of the cleaning tank 1. At this time, at the same time, the user can move the detergent tank 15 in and out in the left-right direction with the other hand. As a result, the workability of the user can be improved.

Further, the detergent tank 15 is composed of, for example, a bottle-shaped container in which liquid detergent is stored. Specifically, the detergent tank 15 is composed of a detergent tank detergent discharge port 15c, a detergent tank detergent suction path 15d, a detergent container lid portion 15e, and the like.

The detergent tank detergent discharge port 15c, the detergent tank detergent suction path 15d, and the detergent container lid 15e are integrally formed and can be detached from the detergent tank 15. Therefore, when the detergent container lid 15e is removed from the detergent tank 15, the integrally configured detergent tank detergent discharge port 15c and the detergent tank detergent suction path 15d can also be removed from the detergent tank 15 at the same time. The tip of the detergent tank detergent suction path 15d for sucking the liquid detergent extends to the vicinity of the bottom surface of the detergent tank 15. As a result, the liquid detergent can be sucked from the detergent tank 15 until the liquid detergent is almost exhausted. Therefore, the liquid detergent in the detergent tank 15 can be used efficiently without waste.

Further, when refilling the detergent tank 15 with liquid detergent, the user first removes the detergent tank 15 from the detergent tank storage section 14. Then, the user removes the detergent container lid portion 15e from the detergent tank 15. As a result, the user can easily refill the detergent tank 15 with the liquid detergent.

With the above-mentioned configuration of the detergent tank 15, liquid detergent can be supplied and stocked in the detergent tank 15 outside the cleaning tank 1. Therefore, it is possible to suppress solidification of the detergent in the detergent tank 15 due to humidity, drying, etc. in the washing tank 1 during washing. Further, the volume of the cleaning tank 1 can be increased because the detergent tank 15 is not arranged in the cleaning tank 1. Further, the user can easily attach / detach the detergent tank 15.

That is, conventionally, a substrate for control such as an operation unit and a display unit was arranged between the cleaning tank and the door body, and the space other than the substrate was a dead space. Therefore, in the present embodiment, the detergent tank 15 is arranged side by side with the substrate in the left-right direction in the dead space. As a result, the dead space can be effectively utilized, and the volume of the cleaning tank 1 can be increased as compared with the conventional cleaning tank because the detergent tank 15 is not arranged in the cleaning tank 1.

Further, as shown in FIG. 2, the detergent tank detergent discharge port 15c of the detergent tank 15 has a convex portion 15f that protrudes laterally to the left side from the detergent container lid portion 15e. On the other hand, the detergent tank storage portion 14 has a concave portion 14c with which the convex portion 15f of the detergent tank detergent discharge port 15c is engaged. Then, the concave portion 14c of the detergent tank storage portion 14 is engaged with the convex portion 15f of the detergent container lid portion 15e. As a result, the storage of the detergent tank 15 in the detergent tank storage unit 14 is completed.

Then, when the detergent tank 15 is stored in the detergent tank storage portion 14 by fitting the concave portion 14c and the convex portion 15f, the liquid detergent is discharged from the detergent tank detergent discharge port 15c to the detergent tank storage portion side detergent discharge path 14b. The transfer route is configured. Further, by fitting the convex portion 15f and the concave portion 14c, the detergent tank 15 can be stably stored in the detergent tank storage portion 14.

Further, the detergent tank storage unit 14 includes a detergent tank storage unit detergent discharge port 14a provided in the recess 14c. One end of the detergent discharge path 14b on the detergent tank storage side is arranged and connected to the detergent discharge port 14a of the detergent tank storage part. On the other hand, the detergent pump 16 which is an example of the detergent liquid feeding part is connected to the other end of the detergent discharge path 14b on the detergent tank storage part side. As another example of the detergent liquid feeding unit, a solenoid valve may be used. Further, a cleaning tank-side detergent discharge path 18 is connected between the detergent pump 16 and the cleaning tank detergent discharge port 17 (see FIG. 1) provided on the front surface of the cleaning tank 1. That is, the detergent pump 16 is arranged in the middle of the detergent input path between the other end of the detergent discharge path 14b on the detergent tank storage side and the detergent discharge path 18 on the cleaning tank side.

As described above, the detergent tank 15 has a detergent tank detergent discharge port 15c for discharging liquid detergent in the detergent discharge path 14b on the detergent tank storage side. The detergent discharge path 14b on the detergent tank storage portion side is connected to the detergent tank storage portion 14. That is, when the detergent tank 15 is stored in the detergent tank storage portion 14, the detergent tank detergent discharge port 15c is configured to be connected to the detergent discharge path 14b on the detergent tank storage portion side.

Further, as shown in FIG. 1, the control device 19 is arranged below the front surface of the cleaning tank 1. The control device 19 controls the drive of, for example, a circulation pump 9, a drainage pump, a water supply pump (water supply valve), a detergent pump 16, and the like.

Specifically, the control device 19 controls the drive rotation speed, drive time, etc. of the detergent pump 16. As a result, a required amount of liquid detergent is sucked from the detergent tank 15 when cleaning the tableware 8 and the like. The sucked liquid detergent is the detergent tank detergent suction path 15d, the detergent tank detergent discharge port 15c, the detergent tank storage detergent discharge port 14a, the detergent tank storage side detergent discharge path 14b, the detergent pump 16, the detergent tank side detergent discharge path. 18. It is supplied into the cleaning tank 1 via the cleaning tank detergent discharge port 17 in order. That is, the liquid detergent stored in the detergent tank 15 can be transferred to the cleaning tank 1 and supplied.

As described above, the area around the detergent tank 15 of the dishwasher is configured, and the liquid detergent is supplied into the washing tank 1.

The configuration of the dishwasher in another example of the first embodiment will be described below with reference to FIG.

FIG. 4 is a schematic side view of the dishwasher according to another example in which the washing tank 1 of the first embodiment is pulled out from the housing 2.

As shown in FIG. 4, the dishwasher according to another example has a transparent portion 15a provided on at least a part of the side surface side of the detergent tank 15. The transparent portion 15a allows the user to visually recognize the remaining amount of the liquid detergent in the detergent tank 15 in a state where the detergent tank 15 is housed in the detergent tank storage portion 14. The transparent portion 15a further has a scale 15b indicating the amount of liquid detergent. As a result, the user can visually check the amount of detergent in the detergent tank 15 from the side through the transparent portion 15a even when the detergent tank 15 is stored in the detergent tank storage portion 14. Therefore, the user can visually infer how much the liquid detergent is reduced, the timing of replenishment, and the like. As a result, the user can easily pull out the detergent tank 15 and replenish the liquid detergent at an appropriate timing.

(Embodiment 2)
Hereinafter, the schematic configuration of the dishwasher of the second embodiment will be described with reference to FIGS. 5 and 6.

FIG. 5 is a schematic front view of the dishwasher in the state where the detergent tank 15 in the second embodiment is housed. FIG. 6 is a schematic side view of the dishwasher in a state where the washing tank 1 in the second embodiment is pulled out from the housing 2.

As shown in FIGS. 5 and 6, the dishwasher of the second embodiment is different from the first embodiment in the arrangement position of the operation unit 24 and the display unit 25 and the configuration of the handle 4. Since the other configurations are the same as those in the first embodiment, the description of the overlapping configurations will be omitted.

That is, as shown in FIG. 5, in the dishwasher of the second embodiment, the operation unit 24 and the display unit 25 are arranged on the upper front surface of the door body 3. The handle 4 is formed in a dented shape toward the inside of the door body 3. The cleaning course, power on / off of the operation unit 24 are set by the operation of the user as in the first embodiment. The display unit 25 displays a cleaning status, an operating status, a time, and the like.

The operation unit 24 and the display unit 25 of the second embodiment are provided on the outer front upper part of the cleaning tank 1 and on the front side of the door body 3. As a result, as in the first embodiment, the user operates the operation unit 24 from the front and above of the cleaning tank 1, for example, at the same time, simultaneously moving the detergent tank 15 in the left-right direction of the detergent tank storage unit 14. Can be taken in and out of.

As shown in FIG. 6, either the operation unit 24 or the display unit 25 is arranged on the flat surface unit 23 as in the first embodiment, and either the display unit 25 or the operation unit 24 is the door body. It may be arranged in the upper part of the front surface of 3.

Further, the dishwasher may be configured by freely combining the description contents of the first embodiment and the description contents of the second embodiment within the described range. As a result, the degree of freedom in design and versatility of the dishwasher can be increased.

(Embodiment 3)
Hereinafter, the schematic configuration of the dishwasher of the third embodiment will be described with reference to FIG. 7.

FIG. 7 is a schematic side view of the dishwasher according to the third embodiment.

As shown in FIG. 7, in the dishwasher according to the third embodiment, the configurations of the detergent tank storage portion and the detergent tank are different from those of the first embodiment and the second embodiment. Since other configurations and operations are the same as those of the first embodiment or the second embodiment, the description of the overlapping configurations will be omitted.

Hereinafter, the differences from the first embodiment and the second embodiment will be mainly described.

That is, as shown in FIG. 7, the dishwasher of the third embodiment includes a float 34, which is an example of a floating body floating in the liquid detergent, in the detergent tank 30. The float 34 has a function of suppressing waves generated in the liquid detergent stored in the detergent tank 30 when the detergent tank 30 is taken in and out of the washing tank 1 or the housing 2. The float 34 is pivotally supported by a rotating shaft 32 (see FIG. 8) provided on the lid of the detergent tank 30 via the arm 33. A magnetic body 35 is arranged on the float 34.

The detergent tank 30 is freely stored in and out of the detergent tank storage unit 40. When cleaning is started with the detergent tank 30 stored in the detergent tank storage unit 40, an appropriate amount of the liquid detergent stored in the detergent tank 30 is sucked by the detergent pump 16 which is an example of the detergent liquid feeding unit. Is issued. The sucked liquid detergent is supplied into the cleaning tank 1 via the detergent discharge path 43 on the detergent tank storage side and the detergent discharge path 18 on the cleaning tank side.

The detergent tank storage unit 40 is provided on the outer surface, for example, and includes a magnetic sensor 41 which is an example of the detection unit for detecting the magnetism of the magnetic body 35. When the magnetic sensor 41 detects the magnetism of the magnetic body 35, it is detected that the detergent tank 30 is housed in the detergent tank storage unit 40.

Next, the configuration around the detergent tank 30 of the dishwasher will be described with reference to FIGS. 8 to 11.

8 to 11 are schematic front views of the dishwasher according to the third embodiment. Specifically, FIG. 8 is a schematic front view of the dishwasher when the liquid detergent is not stored in the detergent tank 30. FIG. 9 is a schematic front view of the dishwasher when the detergent tank 30 is pulled out from the detergent tank storage portion 40 when the liquid detergent is not stored in the detergent tank 30. FIG. 10 is a schematic front view of the dishwasher when the liquid detergent is stored in the detergent tank 30. FIG. 11 is a schematic front view of the dishwasher when the detergent tank 30 is pulled out from the detergent tank storage portion 40 while the liquid detergent is stored in the detergent tank 30.

As described above, the float 34 is pivotally supported by the rotating shaft 32 provided on the cover 31 covering the opening of the detergent tank 30 via the arm 33.

The detergent tank 30 has a cover 31, a rotating shaft 32, an arm 33, a float 34, a magnetic body 35, a detergent discharge port 37, and the like, and is configured to be able to be stored in the detergent tank storage unit 40.

The detergent tank storage unit 40 includes, for example, a magnetic sensor 41, which is an example of a detection unit, provided on an inner surface facing the magnetic body 35. The magnetic sensor 41 is arranged near the control device 50, for example.

As shown in FIGS. 8 and 9, the float 34 and the arm 33 are pivotally supported by the rotating shaft 32 in a state of hanging vertically downward due to their own weight when the liquid detergent is not stored in the detergent tank 30. ..

On the other hand, when the liquid detergent is stored in the detergent tank 30, the float 34 floats according to the liquid level of the liquid detergent, as shown in FIGS. 10 and 11. Then, the arm 33 rotates upward about the rotation shaft 32 due to the rising liquid level. At this time, the magnetic sensor 41 detects the position of the magnetic body 35 of the float 34. As a result, the liquid level of the liquid detergent in the detergent tank 30 is detected.

Further, as shown in FIGS. 9 and 11, when the detergent tank 30 is not stored in the detergent tank storage unit 40, the magnetic sensor 41 and the magnetic body 35 are not arranged so as to face each other. Therefore, the magnetic sensor 41 does not detect the magnetism of the magnetic body 35. Thereby, it can be detected that the detergent tank 30 is not stored in the detergent tank storage unit 40.

The magnetic sensor 41 is composed of, for example, a plurality of Hall elements provided in the vicinity of the positions of the magnetic bodies 35 corresponding to the plurality of liquid levels of the liquid detergent in the detergent tank 30. As a result, the liquid level of the liquid detergent can be detected more accurately.

In addition to the Hall element, the magnetic sensor 41 may be composed of a sensor capable of detecting the magnetism of the magnetic body 35 by any method such as a magnetoresistive effect element or a magnetic impedance element.

Further, it is desirable that the magnetic sensor 41 is provided on the side surface of the detergent tank storage portion 40 on the side farther from the control device 50. As a result, the influence of the magnetic field generated in the electric circuit of the control device 50 on the magnetic sensor 41 can be reduced. As a result, the detection accuracy of the magnetic sensor 41 is further improved.

The detergent discharge port 37 is provided at the lowermost end of the side surface of the detergent tank 30 on the back side in the loading / unloading direction. The detergent receiving port 42 is provided at a position where the detergent discharge port 37 of the detergent tank 30 of the detergent tank storage unit 40 comes into contact with the detergent tank 30 when the detergent tank 30 is stored in the detergent tank storage unit 40.

Then, when the detergent pump 16 operates, the liquid detergent in the detergent tank 30 is cleaned via the detergent discharge port 37, the detergent receiving port 42, the detergent discharge path 43 on the detergent tank storage side, and the detergent discharge path 18 on the washing tank side. It is supplied into the tank 1.

Further, the inner bottom surface 36 of the detergent tank 30 is formed so as to be inclined so as to be lowered toward the detergent discharge port 37. As a result, the liquid detergent can be guided to the detergent discharge port 37 without remaining in the detergent tank 30.

Next, the relationship between the magnetic sensor 41 and the magnetic body 35 with respect to the liquid level of the liquid detergent in the state where the detergent tank 30 is stored in the detergent tank storage portion 40 will be described with reference to FIGS. 12A and 12B.

FIG. 12A is a schematic side view of the detergent tank 30 and the detergent tank storage portion 40 when the liquid level of the liquid detergent in the detergent tank 30 is low. FIG. 12B is a schematic side view of the detergent tank 30 and the detergent tank storage portion 40 when the liquid level of the liquid detergent in the detergent tank 30 is high.

As shown in FIGS. 12A and 12B, the magnetic sensor 41, which is an example of the detection unit, detects the position of the magnetic body 35 according to the liquid level of the liquid detergent. As a result, the magnetic sensor 41 can detect the liquid level of the liquid detergent.

Next, the state of the liquid detergent 38 in the detergent tank 30 of the dishwasher will be described with reference to FIG.

FIG. 13 is a diagram schematically showing a cross section of the detergent tank 30.

As shown in FIG. 13, when the liquid detergent 38 is stored in the detergent tank 30, when the cleaning tank 1 is pulled out from the housing 2 or the detergent tank 30 is pulled out from the detergent tank storage portion 40, FIG. As shown by the double dashed line inside, waves are generated on the surface of the liquid detergent 38. Similarly, waves are generated in the detergent tank shown in FIG.

Therefore, the dishwasher of the present embodiment has a float 34 provided to cancel the waves generated on the surface of the liquid detergent 38. The float 34 is formed of, for example, a material that floats on the liquid detergent 38. That is, the float 34 floats on the liquid surface of the liquid detergent 38 and cancels the generated wave. These phenomena (for example, wave-dissipating effect) have been clarified by the present inventors by experiments. As a result, the waves generated in the liquid detergent 38 can be effectively suppressed as compared with the configuration in which the float 34 is not provided. As a result, when the dishwasher is used or when the detergent tank 30 is replenished with the liquid detergent, the liquid detergent does not spill from the detergent tank 30 or solidify due to adhesion to surrounding members. Can be prevented.

The float 34 is formed of, for example, a thermoplastic resin such as polypropylene (PP) or polyethylene (PE), or a metal such as stainless steel. When the float 34 is made of a metal material, it is preferable to provide a cavity inside the float 34. This makes it easier for the float 34 to float on the surface of the liquid detergent.

Further, the float 34 and the arm 33 may be integrally formed, or may be formed separately, and may be joined and integrated.

Further, the arm 33 is detachably supported by a rotating shaft 32 provided on the cover 31 of the detergent tank 30. As a result, the user can easily wash the arm 33 and the float 34 by removing them from the cover 31. Further, the arm 33 may be integrally formed with the cover 31 of the detergent tank 30.

Next, the configuration of the detergent tank 30 according to another example of the dishwasher will be described with reference to FIGS. 14A and 14B.

14A and 14B are diagrams schematically showing a cross section of the detergent tank 30. Specifically, FIG. 14A is a diagram schematically showing a cross section of the detergent tank 30 when the liquid level of the liquid detergent is high. FIG. 14B is a diagram schematically showing a cross section of the detergent tank 30 when the liquid level of the liquid detergent in the detergent tank 30 is low.

As shown in FIGS. 14A and 14B, the detergent tank 30 is provided on the cover 31 and has an air opening 39 that communicates with the outside.

Further, the cover 31 is provided so as to cover the opening formed above the detergent tank 30 in an airtight and liquidtight manner. Therefore, when the liquid detergent 38 is discharged from the detergent tank 30, the inside of the detergent tank 30 becomes a negative pressure. As a result, the discharge of the liquid detergent 38 may not proceed smoothly. Therefore, the cover 31 is provided with an atmospheric opening 39. As a result, when the liquid detergent 38 is discharged from the detergent tank 30, the outside air flows into the detergent tank 30 from the air opening 39. As a result, it is possible to prevent the inside of the detergent tank 30 from becoming a negative pressure when the liquid detergent 38 is discharged. Therefore, an accurate amount of the liquid detergent 38 can be supplied from the detergent tank 30 into the cleaning tank 1. Thereby, the variation in the amount of the supplied liquid detergent 38 can be suppressed. As a result, high reliability can be maintained in the washing performance of the dishwasher.

Further, when the liquid detergent 38 adheres to the air opening port 39 and solidifies, the air opening port 39 is blocked and the function of allowing the outside air to flow into the detergent tank 30 is reduced. That is, the inside of the detergent tank 30 becomes negative pressure, and there is a risk that an appropriate amount of liquid detergent 38 cannot be supplied from the detergent tank 30 into the cleaning tank 1. Therefore, in order to avoid the occurrence of the above phenomenon, in the dishwasher of the present embodiment, the air opening 39 is provided above the moving range of the float 34 of the cover 31. At this time, if the liquid level of the liquid detergent 38 in the detergent tank 30 is high, the liquid detergent 38 jumps from the liquid surface due to the generation of waves when the detergent tank 30 is taken in and out, and easily hits the air opening 39. However, in the dishwasher of the present embodiment, the float 34 floats on the liquid surface of the liquid detergent 38 directly below the air opening 39 to cancel the wave of the liquid detergent 38. Therefore, it is possible to more reliably prevent the liquid detergent 38 from being applied to the air opening 39.

Next, the configuration of the cover 31 of the detergent tank 30 of the dishwasher will be described with reference to FIGS. 15A to 15C.

15A to 15C are views showing the lower surface of the cover 31 of the detergent tank 30. Specifically, FIG. 15A is a bottom view of the cover 31. FIG. 15B is a perspective view of the lower surface of the cover 31. FIG. 15C is an enlarged perspective view of the vicinity of the air opening 39 of the cover 31.

As shown in FIGS. 15A to 15C, the cover 31 of the detergent tank 30 of the dishwasher of the present embodiment is provided so as to project from the lower surface of the cover 31 toward the inside of the detergent tank 30 in the vicinity of the air opening 39. Has a protruding portion 39a. The protrusion 39a functions as a wall for protecting the liquid detergent 38 that has splashed from the liquid surface from coming into contact with the air opening 39. Thereby, the liquid detergent 38 can be more effectively suppressed from being applied to the air opening 39. The protruding portion 39a may be formed integrally with the cover 31 or may be formed separately from the cover 31 and attached to the cover 31.

The protrusion 39a is provided so that at least a part of the float 34 or the arm 33 approaches or comes into contact with the protrusion 39a when the float 34 is moving upward. That is, when the liquid level of the liquid detergent 38 in the detergent tank 30 is high, the possibility that the liquid detergent 38 will be applied to the air opening 39 increases. In this case, the float 34 floats on the liquid surface of the liquid detergent 38, and the gap between the float 34 or the arm 33 and the protrusion 39a is narrowed. This prevents the liquid detergent 38 from entering through the gap and reduces the possibility of the liquid detergent 38 getting caught in the air opening 39. The protrusion 39a may be provided so as to be close to or in contact with at least a part of another member (for example, the arm 33) that moves with the float 34 when the float 34 moves upward.

Further, the protrusion 39a is formed in a cylindrical shape, for example, surrounding the atmosphere opening 39, and has a notch 39b in a part thereof. The notch 39b prevents the formation of a film on the opening of the protrusion 39a when touched by the liquid detergent 38. As a result, it is possible to further prevent the membrane from blocking the air opening 39.

As described above, in the dishwasher of the present embodiment, the washing tank 1 is arranged so as to be freely taken in and out of the housing 2. Therefore, when the object to be cleaned such as tableware is taken in and out, every time the washing tank 1 is taken in and out of the housing 2, the liquid detergent 38 sways in the direction in which the washing tank 1 is taken in and out, and a wave is generated. Therefore, it is desirable that the notch 39b is provided in a direction different from the direction in which the cleaning tank 1 is taken in and out. As a result, it is possible to prevent the liquid detergent 38 from entering the inside of the protrusion 39a from the notch 39b due to the wave of the liquid detergent 38 generated when the cleaning tank 1 is taken in and out. As a result, it is possible to more reliably prevent the liquid detergent 38 from being applied to the air opening 39.

Further, in the dishwasher of the present embodiment, the detergent tank 30 is arranged so as to be freely taken in and out of the detergent tank storage portion 40. Therefore, when the liquid detergent 38 is replenished, every time the detergent tank 30 is taken in and out of the detergent tank storage portion 40, the liquid detergent 38 sways in the direction of taking in and out of the detergent tank 30, and a wave is generated. Therefore, the notch 39b may be provided in a direction different from the direction in which the detergent tank 30 is taken in and out. As a result, it is possible to prevent the liquid detergent 38 from entering the inside of the protrusion 39a from the notch 39b due to the wave of the liquid detergent 38 generated when the detergent tank 30 is taken in and out. As a result, it is possible to further prevent the liquid detergent 38 from being applied to the air opening 39.

The notch 39b may be provided on the rotation shaft 32 side on which the arm 33 is pivotally supported. At this time, when the liquid level of the liquid detergent 38 is high, the float 34 floats on the liquid surface, so that the arm 33 moves upward. Therefore, the space between the protrusion 39a and the rotation shaft 32 is separated from the liquid detergent 38 by the protrusion 39a, the rotation shaft 32, and the arm 33. As a result, it is possible to prevent the liquid detergent 38 from entering the inside of the protrusion 39a from the notch 39b. As a result, it is possible to prevent the liquid detergent 38 from being applied to the air opening 39.

Next, the relationship between the arm 33 of the detergent tank 30 of the dishwasher and the rotating shaft 32 will be described with reference to FIG.

FIG. 16 is a diagram schematically showing the relationship between the arm 33 and the rotating shaft 32.

As shown in FIG. 16, the rotating shaft 32 has a columnar shape. The arm 33 is provided at the upper end of the arm 33 and has a fitting portion 33a that fits into the columnar rotating shaft 32. The fitting portion 33a has a cylindrical shape in which a part of the angle range of the side surface of the fitting portion 33a is cut out in the axial direction. The notch 33b allows the user to remove the arm 33 from the rotating shaft 32 and easily clean it. Therefore, it is possible to prevent solidification due to adhesion of the liquid detergent 38 between the fitting portion 33a and the rotating shaft 32, and to suppress deterioration of the function of the float 34. In addition, the inside of the detergent tank 30 can be kept clean without solidification. Further, the arm 33 can be easily attached to the rotating shaft 32 at the time of manufacturing the dishwasher. As a result, the manufacturing cost of the detergent tank 30 can be reduced.

In the above description, the configuration in which the arm 33 is rotated around the rotation shaft 32 to move the arm 33 has been described as an example, but the present invention is not limited to this. For example, even in a method of moving the float along a guide provided in the vertical direction, the liquid level of the liquid detergent can be detected and a wave-dissipating effect may be obtained. However, in the case of this configuration, the use of a highly viscous liquid detergent increases the sliding resistance between the guide and the float. Therefore, it may be difficult for the float to follow the fluctuation of the liquid level. Further, when the liquid level of the liquid detergent drops, the liquid detergent 38 adhering between the guide and the float may solidify and the float may not move. Further, when the depth of the detergent tank is shallow, the moving range of the float is narrow, so that the liquid level may not be detected in detail.

Therefore, the dishwasher of the present embodiment is configured to pivotally support the arm 33 with a rotating shaft 32 provided above the liquid level of the liquid detergent 38 and rotate the float 34 according to the liquid level. do. As a result, the possibility that the float 34 will not move due to the solidification of the liquid detergent between the rotating shaft 32 and the arm 33 can be reduced. Further, since the float 34 can be displaced in a substantially arc shape (including an arc shape) in the horizontal direction and the vertical direction with respect to the rotation shaft 32 according to the liquid level, the liquid level can be adjusted more accurately. Can be detected.

Next, the operation relationship between the arm 33 of the detergent tank 30 of the dishwasher and the rotating shaft 32 will be described with reference to FIGS. 17A and 17B.

17A and 17B are views schematically showing a cross section of the arm 33 and the rotating shaft 32. Specifically, FIG. 17A is a diagram showing a cross section of the arm 33 and the rotating shaft 32 when the liquid level of the liquid detergent 38 in the detergent tank 30 is the highest. FIG. 17B is a diagram showing a cross section of the arm 33 and the rotating shaft 32 when the liquid detergent 38 in the detergent tank 30 is empty.

As shown in FIGS. 17A and 17B, the notch 33b of the arm 33 always covers the entire range of the liquid level of the liquid detergent 38 when the arm 33 rotates around the rotation shaft 32 according to the liquid level. , It is configured to face upward from the horizontal direction. As a result, the possibility that the liquid detergent 38 that has jumped from the liquid surface infiltrates between the arm 33 and the rotating shaft 32 from the notch 33b and solidifies can be further reduced.

Further, in the dishwasher of the present embodiment, the rotating shaft 32 is provided parallel to the direction in which the washing tank 1 is taken in and out of the housing 2. Then, the float 34 is configured to rotate in a direction orthogonal to the direction in which the cleaning tank 1 is taken in and out of the housing 2. As a result, when the cleaning tank 1 is taken in and out of the housing 2, the waves generated in the direction of taking in and out can be effectively canceled by the float 34. As a result, it is possible to suppress the adhesion of the liquid detergent 38 to the atmosphere opening 39, the rotating shaft 32, the fitting portion 33a of the arm 33, and the like. Further, when the detergent tank 30 is taken in and out of the detergent tank storage unit 40, waves generated in the direction of taking in and out can be canceled by the float 34. As a result, it is possible to suppress the adhesion of the liquid detergent to the atmosphere opening 39, the rotating shaft 32, the fitting portion 33a of the arm 33, and the like.

In addition to the above configuration, a rotation shaft 32 is provided parallel to the direction in which the detergent tank 30 is taken in and out of the detergent tank storage portion 40, and the direction is orthogonal to the direction in which the detergent tank 30 is taken in and out of the detergent tank storage portion 40. The float 34 may be configured to rotate. As a result, when the detergent tank 30 is taken in and out of the detergent tank storage unit 40, the waves generated in the direction of taking in and out can be effectively canceled by the float 34. Therefore, it is possible to suppress the adhesion of the liquid detergent 38 to the atmosphere opening 39, the rotating shaft 32, the fitting portion 33a of the arm 33, and the like. Further, when the user refills the detergent tank 30 with the liquid detergent, the spill of the liquid detergent 38 from the detergent tank 30 can be suppressed. Further, when the cleaning tank 1 is taken in and out of the housing 2, the waves generated in the direction of taking in and out can be canceled by the float 34. Therefore, it is possible to suppress the adhesion of the liquid detergent 38 to the atmosphere opening 39, the rotating shaft 32, the fitting portion 33a of the arm 33, and the like.

Next, the configuration of the control device 50 of the dishwasher will be described with reference to FIG.

FIG. 18 is a diagram showing a configuration of a control device 50 for controlling the dishwasher according to the embodiment.

The control device 50 is realized by hardware such as a microcomputer, a microcontroller, and an integrated circuit, for example.

As shown in FIG. 18, the control device 50 includes a step control unit 51, a detection result acquisition unit 52, a liquid level determination unit 53, a detergent tank storage determination unit 54, a liquid feed control unit 55, a notification unit 56, and a standing time acquisition unit. 57, a liquid feed target amount determination unit 58, a memory 59, and the like are provided. In terms of hardware, these configurations are realized by the CPU, memory, other LSI, or the like of any computer. In terms of software, it is realized by a program loaded in memory. However, in FIG. 18, it is illustrated by a functional block realized by their cooperation. It will be understood by those skilled in the art that these functional blocks can be realized in various forms such as hardware only or a combination of hardware and software.

The step control unit 51 of the control device 50 controls the washing operation by the dishwasher. The step control unit 51 receives an instruction from the user from the operation unit 24 of the dishwasher, and controls the washing operation according to the instruction. The step control unit 51 may continuously execute the washing step, the rinsing step, and the drying step, or may control to execute only one of the steps. Further, the step control unit 51 may control the combination of any two or more of the above steps to be executed in any order.

The detection result acquisition unit 52 acquires the detection result from the magnetic sensor 41 which is an example of the detection unit. As described above, the magnetic sensor 41 detects the magnetism of the magnetic body 35 provided on the float 34.

The liquid level determination unit 53 determines the liquid level of the liquid detergent 38 stored in the detergent tank 30 based on the detection result acquired by the detection result acquisition unit 52. At this time, the liquid level determination unit 53 may determine the position of the magnetic body 35 based on the magnetism detected by a plurality of Hall elements having different installation positions, and may determine the liquid level of the liquid detergent 38. ..

The detergent tank storage determination unit 54 determines whether or not the detergent tank 30 is stored in the detergent tank storage unit 40 based on the detection result acquired by the detection result acquisition unit 52. Specifically, when the detection result acquisition unit 52 acquires a detection result indicating that the magnetic sensor 41 has detected the magnetism of the magnetic body 35, the detergent tank storage determination unit 54 stores the detergent tank 30 in the detergent tank. It is determined that the material is stored in the unit 40. On the other hand, when the detection result acquisition unit 52 acquires a detection result indicating that the magnetic sensor 41 has not detected the magnetism of the magnetic body 35, the detergent tank storage determination unit 54 uses the detergent tank 30 as the detergent tank storage unit. It is determined that it is not stored in 40.

The liquid feed control unit 55 controls a detergent pump 16 which is an example of the detergent liquid feed unit in order to feed the liquid detergent 38 stored in the detergent tank 30 to the cleaning tank 1. Specifically, as will be described later, the liquid feed control unit 55 controls the detergent pump 16 so that the amount of liquid detergent 38 determined by the liquid feed target amount determination unit 58 is supplied to the cleaning tank 1. do. Then, when the liquid feeding control unit 55 finishes feeding the liquid detergent 38 in the amount determined by the liquid feeding target amount determining unit 58, the liquid feeding control unit 55 records the liquid feeding end time in the memory 59.

Further, when the detergent tank storage determination unit 54 determines that the detergent tank 30 is not stored in the detergent tank storage unit 40, the liquid feed control unit 55 sends the liquid detergent 38 from the detergent tank 30 to the cleaning tank 1. The detergent pump 16 is controlled so that it does not liquid. As a result, it is possible to prevent the washing step from being executed without the detergent being supplied to the washing tank 1. For example, when air is sent into the flow path of the liquid detergent from the detergent tank 30 to the cleaning tank 1, there is a possibility that the target amount of detergent to be sent will not be supplied to the cleaning tank 1 at the next cleaning execution. In this case, the liquid feed control unit 55 controls the detergent pump 16 so as not to feed the liquid detergent to the cleaning tank 1. As a result, it is possible to prevent the detergent having an appropriate target amount of liquid to be sent from being supplied to the cleaning tank 1 at the time of performing cleaning from the next time onward.

When the detergent tank storage determination unit 54 determines that the detergent tank 30 is not stored in the detergent tank storage unit 40, the notification unit 56 notifies the user to that effect. At this time, the notification unit 56 may notify the user by voice that the detergent tank 30 is not stored in the detergent tank storage unit 40, or may display it on the display unit 25 to notify the user. As a result, even if the user accidentally starts cleaning without storing the detergent tank 30 in the detergent tank storage unit 40, the notification prompts the user to store the detergent tank 30 in the detergent tank storage unit 40. be able to.

The leaving time acquisition unit 57 calculates the elapsed time since the last time the liquid detergent 38 was supplied to the cleaning tank 1 by the detergent pump 16. As a result, the leaving time acquisition unit 57 acquires the leaving time in which the detergent pump 16 and the flow path of the liquid detergent have been left unused. Specifically, the leaving time acquisition unit 57 reads the previous liquid feeding end time from the memory 59, and calculates the elapsed time up to the current time as the leaving time. In this case, the leaving time acquisition unit 57 may calculate by counting the elapsed time from the previous liquid feeding end time by a counter circuit or the like. Further, the leaving time acquisition unit 57 may acquire information indicating the previous liquid feeding end time or leaving time from an external server or the like.

As shown in FIG. 19, the liquid detergent 38 normally used in a dishwasher increases in viscosity (thickening) due to oxidation by oxygen in the air when left for a long period of time.

FIG. 19 is a diagram showing a change in the viscosity of the liquid detergent 38 measured by a rotary viscometer with respect to the leaving time of the liquid detergent 38.

As shown in FIG. 19, the viscosity of the liquid detergent 38 measured after being left for 3 months is a change of a slight increase from the initial value. On the other hand, the viscosity of the liquid detergent 38 measured after being left for 6 months has increased remarkably from the initial value. Therefore, when the dishwasher is used again after being left unused for a long period of time after the dishwasher is used, the liquid detergent 38 remaining in the flow path including the detergent pump 16 thickens or solidifies. And the flow gets worse. Therefore, there is a possibility that the detergent pump 16 cannot supply the specified amount of detergent to the cleaning tank 1.

Therefore, in the present embodiment, when the leaving time is longer than the predetermined threshold value, the target amount of the liquid detergent to be sent is increased from the specified amount. Specifically, the control device 50 increases the driving time, the number of driving times, the driving voltage, and the like of the detergent pump 16 more than usual. As a result, an appropriate amount of the liquid detergent 38 can be supplied to the cleaning tank 1 by compensating for the decrease in the liquid feed amount due to the thickening of the liquid detergent 38.

The liquid feed target amount determination unit 58 determines the liquid feed target amount when supplying the liquid detergent 38 to the cleaning tank 1. Specifically, when the leaving time acquired by the leaving time acquisition unit 57 is shorter than the first threshold value, the liquid feed target amount determination unit 58 determines the operation mode of the cleaning step, the type of liquid detergent, and the type of the object to be cleaned. The target amount of liquid to be sent is determined according to the conditions such as the amount, water temperature, and temperature. On the other hand, when the leaving time acquired by the leaving time acquisition unit 57 is longer than the first threshold value, the liquid feeding target amount determining unit 58 further adjusts to the normal liquid feeding target amount determined as described above. Add a predetermined amount. The additional amount is determined according to the conditions such as the leaving time, the season of the leaving period, the temperature, and the humidity. For example, it is considered that the longer the standing time and the lower the temperature or humidity during the leaving period, the higher the degree of thickening of the liquid detergent 38. Therefore, in the above situation, the liquid feed target amount determination unit 58 determines to increase the additional amount of the liquid detergent 38. The first threshold value is, for example, about 3 months.

The liquid feed control unit 55 controls the detergent pump 16 in order to feed the liquid detergent of the liquid feed target amount determined by the liquid feed target amount determination unit 58. Specifically, the liquid feed control unit 55 determines the drive time, the number of drives, and the drive voltage of the detergent pump 16 according to the liquid feed target amount, and controls the detergent pump 16.

When the liquid detergent is left unused for a longer time than the first threshold value, the liquid feed target amount determination unit 58 increases the liquid feed target amount of the liquid detergent 38 more than usual. May be executed only once immediately after the elapsed time, or may be executed a predetermined number of times after the elapsed time. Further, the period for increasing the amount may be until it is detected that the liquid detergent stored in the detergent tank 30 is used and the detergent tank 30 is almost empty. That is, it is sufficient to decide which of the above periods is adopted according to the leaving time. For example, when the leaving time is relatively short, the liquid detergent 38 is sent once. As a result, it is expected that the thickened liquid detergent 38 remaining in the flow path will flow out into the cleaning tank 1. In this case, the liquid feed target amount determination unit 58 may decide to increase the liquid feed target amount only once immediately after. On the other hand, when the standing time is relatively long, it is considered that several times of liquid feeding is required before the thickened liquid detergent remaining in the flow path flows out to the cleaning tank 1. In this case, the liquid feed target amount determination unit 58 may decide to increase the liquid feed target amount over a predetermined number of times immediately after. If the standing time is longer, it is considered that the liquid detergent remaining in the detergent tank 30 is also thickened. In this case, the liquid feed target amount determination unit 58 may decide to increase the liquid feed target amount until the liquid detergent remaining in the detergent tank 30 is generally used. At this time, it may be determined that the liquid detergent remaining in the detergent tank 30 has been generally used based on the liquid level of the liquid detergent determined by the liquid level determination unit 53.

The liquid feed target amount determination unit 58 may further determine the liquid feed target amount based on the elapsed time since the liquid detergent 38 was stored in the detergent tank 30. That is, when the elapsed time since the liquid detergent 38 is stored in the detergent tank 30 is longer than a predetermined threshold value (corresponding to the first threshold value), the liquid feed target amount determination unit 58 is stored in the detergent tank 30. In order to compensate for the decrease in the liquid feed amount due to the thickening of the liquid detergent 38, the increase in the liquid feed target amount may be determined. In this case, the time when the liquid level determination unit 53 determines that the liquid level of the liquid detergent stored in the detergent tank 30 is full is recorded in the memory 59. Then, the liquid feed target amount determination unit 58 may calculate the elapsed time with reference to the time recorded in the memory 59.

The liquid feed target amount determination unit 58 may further determine the liquid feed target amount based on the liquid level of the liquid detergent 38 determined by the liquid level determination unit 53. Specifically, the liquid feed target amount determination unit 58 determines the liquid feed target from the first time point, for example, the time point when the liquid level of the liquid detergent determined by the liquid level determination unit 53 is full to the second time point. The target liquid level is calculated by subtracting the cumulative amount from the liquid level determined by the liquid level determination unit 53 at the first time point. Then, the liquid feed target amount determination unit 58 calculates the actual liquid level determined by the liquid level determination unit 53 at the second time point. At this time, when the difference between the calculated target liquid level and the actual liquid level is larger than the predetermined value, the liquid feed target amount determination unit 58 determines that the amount of the liquid detergent 38 actually sent is the liquid feed target amount. It is judged that it deviates greatly from. That is, the liquid feed target amount determination unit 58 may adjust the liquid feed target amount according to the difference between the target liquid level and the actual liquid level. The above-mentioned predetermined value is about 2 g. For example, when the target liquid level is higher than the actual liquid level by a predetermined value or more, the target liquid feeding amount may be increased. The liquid feed target amount for calculating the difference between the target liquid level and the actual liquid level may be a value before being increased by the liquid feed target amount determination unit 58.

In the liquid feed control unit 55, when the leaving time acquired by the leaving time acquisition unit 57 is longer than the second threshold value, or when the elapsed time after the liquid detergent 38 is stored in the detergent tank 30 is greater than a predetermined threshold value. If it is too long, the liquid detergent stored in the detergent tank 30 may be controlled to be discarded. In this case, the liquid feed control unit 55 sends all the liquid detergent stored in the detergent tank 30 to the cleaning tank 1, then supplies water to the cleaning tank 1 together with the supplied water. The liquid detergent 38 may be discharged. At this time, it is preferable that the notification unit 56 notifies the user that the liquid detergent is to be discarded. As a result, it is possible to prevent the object to be cleaned from being washed with the liquid detergent 38 which is stored in the detergent tank 30 for a long period of time and may be deteriorated due to oxidation or the like.

Next, the procedure of the control method of the dishwasher will be described with reference to FIG.

FIG. 20 is a flowchart showing the procedure of the control method of the dishwasher according to the embodiment. Specifically, FIG. 20 is a flowchart showing a procedure for determining whether or not the detergent tank 30 is installed in the dishwasher before the washing step is started.

As shown in FIG. 20, when the control device 50 starts the cleaning step by the step control unit 51 (step S10), the detection result acquisition unit 52 first acquires the detection result from the magnetic sensor 41. Then, the detergent tank storage determination unit 54 determines whether or not the detergent tank 30 is stored in the detergent tank storage unit 40 based on the acquired detection result (step S12). At this time, if the detergent tank 30 is not stored in the detergent tank storage unit 40 (N in step S12), the user is notified to that effect via the notification unit 56 (step S14). Then, the process returns to step S12, and the subsequent processing is executed.

On the other hand, when the detergent tank 30 is stored in the detergent tank storage unit 40 (Y in step S12), the step control unit 51 executes the cleaning step shown in FIG. 21 below (step S16).

Next, the procedure for supplying the liquid detergent 38 before the washing step of the control method of the dishwasher will be described in more detail with reference to FIG. 21.

FIG. 21 is a flowchart showing the procedure of the control method of the dishwasher according to the embodiment. More specifically, FIG. 21 is a flowchart showing a procedure for supplying the liquid detergent 38 before the washing step performed in the dishwasher.

As shown in FIG. 21, the leaving time acquisition unit 57 of the control device 50 first reads the previous liquid feeding end time from the memory 59 (step S20) and calculates the leaving time (step S21).

Next, it is determined whether or not the calculated leaving time is larger than the second threshold value t2 (step S22). The second threshold value t2 is, for example, about 6 months. At this time, when the leaving time is longer than the second threshold value t2 (Y in step S22), the liquid feed control unit 55 sends all the liquid detergent 38 stored in the detergent tank 30 to the cleaning tank 1. (Step S24). Further, the liquid feed control unit 55 supplies water into the cleaning tank 1 and discharges the liquid detergent 38 together with the water (step S26). Then, the cleaning step is skipped and the process ends.

On the other hand, when the leaving time is equal to or less than the second threshold value t2 (N in step S22), the liquid feed target amount determination unit 58 determines the normal liquid feed target amount (step S28).

Next, it is determined whether or not the calculated leaving time is larger than the first threshold value t1 (step S28). The first threshold value t1 is, for example, about 3 months. At this time, if the leaving time is longer than the first threshold value t1 (Y in step S30), the liquid feed target amount determination unit 58 increases the liquid feed target amount (step S32) and proceeds to step S34. On the other hand, when the leaving time is equal to or less than the first threshold value t1 (N in step S30), the liquid feeding target amount is not changed and step S32 is skipped.

Next, the liquid feed control unit 55 controls the detergent pump 16 which is an example of the detergent liquid feed unit, and feeds the increased liquid feed target amount of the liquid detergent 38 to the cleaning tank 1 (step S34). Then, when the liquid feeding is completed, the liquid feeding end time is recorded in the memory 59 (step S36).

After that, the step control unit 51 executes the cleaning step (step S38).

After executing the above pre-procedure, the dishwasher executes the washing step.

Hereinafter, the configuration of the detergent tank 30 according to another example of the dishwasher of the present embodiment will be described with reference to FIGS. 22A and 22B.

22A and 22B are diagrams schematically showing the configuration of the detergent tank 30 according to another example. Specifically, FIG. 22A is a schematic cross-sectional view of the detergent tank 30 according to another example. FIG. 22B is a schematic side view of the detergent tank 30 according to another example as viewed from the back side in the loading / unloading direction.

As shown in FIG. 22A, the detergent tank 30 includes a detergent discharge port 71 provided at the lowermost end of the side surface on the back side in the loading / unloading direction of the detergent tank 30. The detergent discharge port 71 is formed in a substantially cylindrical shape (including a cylindrical shape), and the foreign matter trap 70 is inserted into the internal cavity. The foreign matter catching unit 70 catches foreign matter mixed in the detergent tank 30.

An O-ring 72 is arranged between the foreign matter trap 70 and the detergent discharge port 71. As a result, the space between the foreign matter trap 70 and the detergent discharge port 71 is liquid-tightly fixed.

The liquid detergent 38 stored in the detergent tank 30 is discharged from the flow path 73 (see FIG. 22B) formed inside the foreign matter trap 70.

The outer diameter of the end of the foreign matter trap 70 inserted inside the detergent tank 30 is smaller than the inner opening of the detergent discharge port 71, and the outer diameter of the outer end is outside the detergent discharge port 71. It is formed with a diameter larger than the opening. As a result, the foreign matter trap 70 is detachably inserted into the detergent discharge port 71 from the outside of the detergent tank 30. That is, the foreign matter trap 70 is fixed to the detergent discharge port 71 only by the sliding resistance of the O-ring 72. Therefore, as shown by the arrow in FIG. 22A, the user can easily remove the foreign matter trapping portion 70 from the detergent tank 30 simply by pushing the foreign matter trapping portion 70 from the inside to the outside of the detergent tank 30. can. Further, the user can easily attach the foreign matter catching portion 70 to the detergent tank 30 by simply pushing the foreign matter catching portion 70 into the detergent discharge port 71 from the outside of the detergent tank 30. As a result, the user can easily attach / detach the foreign matter catching portion 70 to wash away the detergent discharge port 71 and its surroundings. That is, the user can easily remove the foreign matter captured by the foreign matter capturing unit 70.

In addition, a concave portion or a convex portion may be formed in the peripheral portion of the foreign matter catching portion 70, and a convex portion or the concave portion that fits into the concave portion or the convex portion in the peripheral portion of the foreign matter catching portion 70 may be formed in the detergent discharge port 71. .. As a result, the foreign matter trapping portion 70 can be prevented from coming off from the detergent tank 30 unless the user applies a predetermined force to pull it out. That is, by making the foreign matter trapping portion 70 difficult to remove from the detergent tank 30, when the user removes the detergent tank 30 from the detergent tank storage portion 40, the foreign matter trapping portion 70 unintentionally comes off from the detergent tank 30. It is possible to prevent the liquid detergent 38 from flowing out from the detergent tank 30.

Next, the configuration of the foreign matter capturing unit 70 will be described with reference to FIG. 23.

FIG. 23 is a diagram schematically showing a cross section of the foreign matter capturing portion 70.

As shown in FIG. 23, the foreign matter trapping portion 70 includes a cover 76 having a substantially cylindrical (including cylindrical shape) shape, a throttle portion 74 connected to an end portion of the cover 76, and a cavity inside the cover 76. A valve body 80 arranged inside is provided.

The cover 76 has a groove 78 formed in the vicinity of the central portion in the longitudinal direction of the cover 76. The above-mentioned O-ring 72 (see FIG. 22A) is arranged on the outside of the groove 78.

The throttle portion 74 includes a throttle portion opening 75 formed in the vicinity of the connection portion with the cover 76. On the other hand, the cover 76 includes a cover opening 77 formed near the connection portion with the throttle portion 74.

Then, the liquid detergent 38 stored in the detergent tank 30 flows into the flow path 73 inside the cover 76 through the throttle opening 75 and the cover opening 77.

Further, the valve body 80 includes a sealing member 82, and is normally urged to the left in FIG. 23 by an urging spring 81. As a result, the valve body 80 is pressed against the inside of the groove 78 via the seal member 82. As a result, the space between the valve body 80 and the cover 76 is liquid-tightly sealed by the sealing member 82. Therefore, the liquid detergent 38 is prevented from flowing out to the flow path 73 of the foreign matter capturing portion 70.

Next, the operation of the foreign matter capturing unit 70 will be described with reference to FIGS. 24A to 24D.

FIGS. 24A to 24D are diagrams schematically showing a state in which the foreign matter trap 70 is attached to the detergent discharge port 71. Specifically, FIG. 24A shows a cross section when the foreign matter trap 70 is attached to the detergent discharge port. FIG. 24B is a partially enlarged view of the rectangular portion of FIG. 24A. FIG. 24C is a side view of the foreign matter trap 70 as viewed from the inside of the detergent tank 30. FIG. 24D is a side view of another example of the throttle portion 74 of the foreign matter catching portion 70. Although FIGS. 24A to 24D are shown with the valve body 80 open, the opening and closing of the valve body 80 will be described later.

As shown in FIG. 24B, when the foreign matter catching portion 70 is attached to the detergent discharge port 71, the gap d between the outside of the main body of the foreign matter catching portion 70 and the inner opening of the detergent discharge port 71 is a narrowing portion. It is configured to be smaller than the inner diameter of the flow path of the liquid detergent 38 from the opening 75 to the cleaning tank 1. The flow path of the liquid detergent includes a cover opening 77, a flow path between the valve body 80 and the cover 76 when the valve body 80 is opened, a flow path 73, an opening outside the detergent discharge port 71, and a detergent tank storage portion. The side detergent discharge path 43, the flow path in the detergent pump 16, the cleaning tank side detergent discharge path 18, and the cleaning tank detergent discharge port 17 are included.

At this time, when the liquid detergent 38 is sent from the detergent tank 30 to the cleaning tank 1 by the detergent pump 16 which is an example of the detergent liquid feeding unit, foreign matter larger than the gap d in the detergent tank 30 fills the gap d. Since it cannot pass through, it stays in the detergent tank 30. On the other hand, foreign matter smaller than the gap d and capable of passing through the gap d flows to the cleaning tank 1 without being clogged in the middle of the flow path. As a result, it is possible to prevent foreign matter from being clogged in the flow path of the liquid detergent 38 from the detergent discharge port 71 to the cleaning tank 1. Then, the foreign matter that remains in the detergent tank 30 without passing through the gap d can be easily washed away and removed by removing the foreign matter catching portion 70.

That is, as shown in FIG. 24C, the liquid detergent 38 flows into the foreign matter capturing portion 70 only through the concentric annular gap d formed on the outer periphery of the throttle portion 74, and is discharged from the detergent discharge port 71 of the detergent tank 30. Will be done. Therefore, as described above, the gap d functions as a foreign matter trapping flow path for capturing the foreign matter in the detergent tank 30.

Further, as shown in FIG. 24D, the foreign matter capturing portion 70 may further have a hole 83 provided in the throttle portion 74 in addition to the gap d. As a result, the liquid detergent 38 can flow into the foreign matter trapping portion 70 from the hole 83 as well. At this time, the diameter of the hole 83 is formed to be smaller than the diameter of the flow path of the liquid detergent from the detergent discharge port 71 to the cleaning tank 1. Therefore, the hole 83 also functions as a foreign matter trapping flow path, similarly to the gap d. That is, foreign matter larger than the hole 83 cannot pass through the hole 83 and therefore stays in the detergent tank 30. On the other hand, foreign matter smaller than the hole 83 and capable of passing through the hole 83 flows to the cleaning tank 1 without clogging the flow path. As a result, it is possible to prevent foreign matter from being clogged in the flow path of the liquid detergent 38 from the detergent discharge port 71 to the cleaning tank 1. Then, the foreign matter adhering to the periphery of the hole 83 without passing through the hole 83 can be easily removed by removing and washing the foreign matter catching portion 70.

As described above, the flow path cross-sectional area of the liquid detergent 38 can be increased by further providing the hole 83 in the foreign matter capturing portion 70. As a result, the pressure loss can be reduced, and the negative pressure generated when the liquid detergent 38 is sucked out by the detergent pump 16 can be reduced. Further, the holes 83 increase the portion through which the liquid detergent 38 can pass. Therefore, even if a part of the hole 83 is blocked by a foreign substance, the influence of clogging can be reduced. As a result, the liquid feeding performance and reliability of the liquid detergent 38 can be maintained satisfactorily.

Next, the other configuration of the foreign matter capturing unit 70 will be described with reference to FIG. 25A.

FIG. 25A is another diagram schematically showing a cross section of the foreign matter capturing portion 70.

As shown in FIG. 25A, the foreign matter trapping portion 70 includes a cover 76 having a substantially cylindrical (including cylindrical shape) shape, a throttle portion 74 connected to an end portion of the cover 76, and a cavity inside the cover 76. A valve body 80 arranged inside is provided.

The throttle portion 74 includes a cover opening 77 formed in the vicinity of the connection portion with the cover 76, while the cover 76 is formed in the vicinity of the connection portion with the cover 76.

A plurality of elongated holes 84 are formed on the side surface 74a and the peripheral surface 74b of the drawing portion 74. As an example of the dimensions of the elongated hole 84, the size may be about 0.3 mm × 0.8 mm.

Then, the liquid detergent 38 stored in the detergent tank 30 flows into the flow path 73 inside the cover 76 through the elongated hole 84 and the cover opening 77.

Further, the valve body 80 includes a sealing member 82, and is normally urged to the left in FIG. 25A by an urging spring 81. As a result, the valve body 80 is pressed against the inside of the groove 78 via the seal member 82. As a result, the space between the valve body 80 and the cover 76 is liquid-tightly sealed by the sealing member 82. Therefore, the liquid detergent 38 is prevented from flowing out to the flow path 73 of the foreign matter capturing portion 70.

Next, the operation of the foreign matter capturing unit 70 will be described with reference to FIG. 25B.

FIG. 25B is a side view of another example of the throttle portion 74 of the foreign matter capturing portion 70.

As shown in FIG. 25B, when the foreign matter catching portion 70 is attached to the detergent discharge port 71, the gap d between the outside of the main body of the foreign matter catching portion 70 and the inner opening of the detergent discharge port 71 is a long hole. It is configured to be smaller than the maximum dimension of 84 (about 0.8 mm). The flow path of the liquid detergent includes a cover opening 77, a flow path between the valve body 80 and the cover 76 when the valve body 80 is opened, a flow path 73, an opening outside the detergent discharge port 71, and a detergent tank storage portion. The side detergent discharge path 43, the flow path in the detergent pump 16, the cleaning tank side detergent discharge path 18, and the cleaning tank detergent discharge port 17 are included.

That is, as shown in FIG. 25B, the liquid detergent 38 flows into the foreign matter capturing portion 70 only through the concentric annular gap d formed on the outer circumference of the throttle portion 74, and is discharged from the detergent discharge port 71 of the detergent tank 30. Will be done. Therefore, as described above, the gap d functions as a foreign matter trapping flow path for capturing the foreign matter in the detergent tank 30.

Further, the foreign matter capturing portion 70 may have a configuration in which the elongated hole 84 provided in the throttle portion 74 is further provided in addition to the gap d. As a result, the liquid detergent 38 can flow into the foreign matter trap 70 through the plurality of elongated holes 84. At this time, the maximum size of the elongated hole 84 is formed so as to be smaller than the diameter of the flow path of the liquid detergent from the detergent discharge port 71 to the cleaning tank 1. Therefore, the elongated hole 84 functions as a foreign matter trapping flow path, similarly to the gap d. That is, foreign matter larger than the elongated hole 84 cannot pass through the elongated hole 84, so that it stays in the detergent tank 30. On the other hand, foreign matter smaller than the elongated hole 84 and capable of passing through the elongated hole 84 flows to the cleaning tank 1 without clogging the flow path. As a result, it is possible to prevent foreign matter from being clogged in the flow path of the liquid detergent 38 from the detergent discharge port 71 to the cleaning tank 1. Then, the foreign matter adhering to the periphery of the long hole 84 without passing through the long hole 84 can be easily removed by removing and washing the foreign matter catching portion 70.

As described above, by further providing the elongated hole 84 in the foreign matter capturing portion 70, the flow path cross-sectional area of the liquid detergent 38 can be increased as compared with the hole 83 in FIG. 24D. As a result, the pressure loss can be reduced, and the negative pressure generated when the liquid detergent 38 is sucked out by the detergent pump 16 can be reduced. Further, the elongated holes 84 increase the portion through which the liquid detergent 38 can pass. Therefore, even if a part of the elongated hole 84 is blocked by a foreign substance, the influence of clogging can be reduced. As a result, the liquid feeding performance and reliability of the liquid detergent 38 can be maintained satisfactorily.

Further, in the elongated hole 84, even if a part of the elongated hole 84 is blocked by a granular foreign substance (for example, a foreign substance having a diameter of about 0.4 mm) which is a typical foreign matter shape, all of the elongated hole 84 is formed. Since it is not blocked, the effect of clogging can be reduced.

Next, the other configuration of the foreign matter capturing unit 70 will be described with reference to FIG. 26. FIG. 26 is a side view of another example of the throttle portion 74 of the foreign matter catching portion 70.

As shown in FIG. 26, the foreign matter capturing portion 70 having another configuration includes a convex portion 85 formed on the peripheral portion. On the other hand, the detergent discharge port 71 includes a recess 86 formed so as to fit into a convex portion on the periphery of the foreign matter catching portion 70. The other configurations of the foreign matter capturing unit 70 having other configurations are the same as those in FIGS. 24D and 25B. Then, the convex portion 85 of the peripheral portion of the foreign matter catching portion 70 and the concave portion 86 of the detergent discharge port 71 are configured to fit. As a result, the foreign matter trapping portion 70 can be prevented from coming off from the detergent tank 30 unless the user applies a predetermined force to pull it out. That is, by making the foreign matter trapping portion 70 difficult to remove from the detergent tank 30, when the user removes the detergent tank 30 from the detergent tank storage portion 40, the foreign matter trapping portion 70 unintentionally comes off from the detergent tank 30. It is possible to prevent the liquid detergent 38 from flowing out from the detergent tank 30.

Next, a state when the detergent tank 30 according to another example is stored in the detergent tank storage unit 40 will be described with reference to FIG. 27.

FIG. 27 is a diagram schematically showing a cross section when the detergent tank 30 according to another example is stored in the detergent tank storage unit 40.

As shown in FIG. 27, the detergent tank storage unit 40 has an elbow 44 that constitutes a detergent discharge path 43 on the detergent tank storage unit side. The elbow 44 has a rib 45 provided at the tip of the detergent tank 30 side.

When the detergent tank 30 is stored in the detergent tank storage portion 40, the rib 45 is inserted into the flow path 73 of the foreign matter catching portion 70 and pushes the valve body 80. As a result, the flow path blocked by the valve body 80 is opened, and the liquid detergent 38 can flow into the flow path 73.

On the other hand, while the detergent tank 30 is removed from the detergent tank storage portion 40, the valve body 80 is pressed against the groove portion 78 by the urging spring 81, and the flow path between the valve body 80 and the cover 76 is closed. .. Therefore, it is possible to prevent the liquid detergent 38 stored inside the detergent tank 30 from leaking from the detergent discharge port 71.

In the above embodiment, the configuration in which the foreign matter catching unit 70 has a foreign matter catching flow path (gap d, hole 83, elongated hole 84) for catching foreign matter has been described as an example, but the present invention is limited to this. No. For example, the foreign matter catching unit 70 may include a filter or the like for catching foreign matter. In this case, it is preferable that the foreign matter trapping portion 70 is detachably provided in the outward direction of the detergent tank 30 in the same manner as described above. This allows the user to easily remove the filter and remove foreign matter.

The present disclosure has been described above based on the examples in the embodiment. This embodiment is an example, and various variations are possible for each of these components and the combination of each processing process. It will be appreciated by those skilled in the art that such modifications are also within the scope of the present disclosure.

That is, in the above embodiment, the configuration in which the cleaning tank 1 having an opening at the top is provided so as to be able to be taken in and out from the housing 2 having the front opening at the front is described as an example, but the present invention is not limited to this. .. For example, the opening / closing door of the cleaning tank 1 may be provided above the cleaning tank 1. In the case of this configuration, the cleaning tank 1 may be provided so as to be able to be taken in and out from the housing 2 in the front-rear direction, or may be fixedly stored inside the housing 2.

Further, in the above embodiment, the configuration in which the dishwasher is stored inside the system kitchen has been described as an example, but the present invention is not limited to this. For example, the dishwasher may be an independent device.

Further, in the above embodiment, a dishwasher for washing dishes and other objects to be washed has been described as an example, but the technique of the present disclosure includes a washing machine for washing clothes and other objects to be washed and other objects to be washed. It can also be applied to a cleaning device for cleaning.

The present invention can be used as a cleaning device for cleaning an object to be cleaned.

1 Detergent tank 1a Opening 2 Housing 3 Door body 4 Handle 5 1st rail 6 2nd rail 8 Tableware 9 Circulation pump 10 Heater 11 Cleaning nozzle 12 Side wall 13 Front space 14 Detergent tank storage 14a Detergent tank storage Detergent discharge port 14b Detergent tank storage side

Detergent discharge path

14c, 86 Recessed part 15 Detergent tank 15a Transparent part 15c Detergent tank Detergent discharge port 15d Detergent tank Detergent suction path

15e Lid part

15f, 85 Convex part 16 Detergent pump (detergent liquid delivery) Department)
17 Cleaning tank detergent discharge port 18 Cleaning tank side detergent discharge path 19 Control device 23 Flat surface part 24 Operation part 25 Display part 30 Detergent tank 31 Cover 32 Rotating shaft 33 Arm 33a Fitting part 33b Notch 34 Float (floating body)
35 Magnetic material 36 Inner bottom surface 37 Detergent discharge port 38 Liquid detergent 39 Atmospheric opening port 39a Protruding part 39b Notch 40 Detergent tank storage part 41 Magnetic sensor (detection part)
42 Detergent inlet 43 Detergent tank storage side Detergent discharge path 44 Elbow 45 Rib 50 Control device 51 Step control unit 52 Detection result acquisition unit 53 Liquid level judgment unit 54 Detergent tank storage judgment unit 55 Liquid supply control unit 56 Notification unit 57 Time acquisition part 58 Liquid feed target amount judgment part 59 Memory 70 Foreign matter catching part 71 Detergent discharge port 72 O-ring 73 Flow path 74 Squeezing part 74a Side surface 74b Peripheral surface 75 Squeezing part opening 76 Cover 77 Cover opening 78 Groove 80 Valve body 81 Force spring 82 Seal member 83 hole 84 long hole

Claims

With the housing
A cleaning tank provided in the housing and accommodating an object to be cleaned,
A detergent tank for storing the liquid detergent supplied to the washing tank, and
A foreign matter catching portion provided at the detergent discharge port of the detergent tank is provided.
The foreign matter catching portion is configured to be removable in the outward direction of the detergent tank.
Cleaning equipment.
A detergent liquid feeding unit for sending the liquid detergent stored in the detergent tank to the washing tank is further provided.
The foreign matter capturing unit captures foreign matter in the detergent tank when the liquid detergent is sent from the detergent tank to the cleaning tank by the detergent liquid feeding unit.
The cleaning device according to claim 1.
The foreign matter trapping portion is composed of a plurality of holes or elongated holes.
The cleaning device according to any one of claims 1 and 2.
The foreign matter trapping portion has a foreign matter trapping flow path having an inner diameter smaller than the inner diameter of the flow path of the liquid detergent from the detergent tank to the cleaning tank.
The cleaning device according to any one of claims 1 and 2.
The foreign matter trapping flow path includes a flow path between the outside of the main body of the foreign matter trapping portion and the detergent discharge port.
The cleaning device according to claim 4.
The foreign matter trapping flow path includes a plurality of holes or elongated holes provided in the main body of the foreign matter trapping portion in contact with the inside of the detergent tank.
The cleaning device according to any one of claims 4 and 5.
Further provided with a detergent tank storage unit for storing the detergent tank,
The foreign matter trapping unit includes a valve body that closes a flow path for discharging the liquid detergent to the outside of the detergent tank when the detergent tank is not stored in the detergent tank storage unit.
The valve body is configured to open when the detergent tank is stored in the detergent tank storage portion.
The cleaning device according to any one of claims 1 to 6.