CN111050625B

CN111050625B - Tableware cleaning machine

Info

Publication number: CN111050625B
Application number: CN201980003817.5A
Authority: CN
Inventors: 后藤惇; 田中启之; 王鋆
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2018-02-21
Filing date: 2019-01-16
Publication date: 2024-02-02
Anticipated expiration: 2039-01-16
Also published as: WO2019163334A1; JP7113197B2; CN111050625A; JPWO2019163334A1

Abstract

Comprises a dish basket (6) for accommodating objects (13) to be cleaned, a washing tank (2) for accommodating the dish basket (6), a detergent supply device (16) for supplying detergent, and a control part (36). The detergent supply device (16) has: a detergent container (17) having an opening and rotatably provided; a rotation mechanism that rotates the detergent container (17) to a state in which the detergent stored in the detergent container (17) is discharged; and a cover (31) that closes the opening in the pre-cleaning step. Thus, water is prevented from entering the detergent container (17) in the pre-cleaning step, and detergent can be reliably supplied in the cleaning step with a simple structure.

Description

Tableware cleaning machine

Technical Field

The present invention relates to a dish washing machine that uses washing water to wash dishes and the like.

Background

In general, a dish washing machine for washing dishes and the like is configured to spray washing water pressurized by a washing pump from an injection port of a washing nozzle toward the dishes, and wash away dirt adhering to the dishes. In this case, it is considered that the cleaning effect is improved by performing a pre-cleaning in which large dirt adhering to the object to be cleaned is removed by the cleaning water containing no detergent before the cleaning step in which the cleaning is performed by the cleaning water containing the detergent. That is, the cleaning step is performed next to the pre-cleaning step. Therefore, the detergent supplied in the washing step is put in the detergent supply device in advance before the start of the operation. Then, after the pre-cleaning step is performed, a detergent is supplied by a detergent supply device (for example, refer to patent document 1).

As shown in fig. 11 and 12, the dish washing machine described in patent document 1 includes a shielding member 74 rotatably mounted around a shaft 73 in a container 72 in which a detergent 71 is placed. The shielding member 74 is locked to the container 72 in a state of shielding the container 72 in which the detergent 71 is placed in the pre-cleaning step. Then, in the cleaning step, the shielding member 74 is rotated in the arrow direction, and the container 72 is opened. Thereby, the detergent 71 in the container 72 is discharged to the washing tub.

The storage chamber for storing the detergent is provided with a detergent replenishment cover for opening and closing the detergent replenishment port and a detergent supply cover for opening and closing the detergent supply port. In addition, a structure is also considered in which the detergent supply cover and the detergent supply cover are opened in the washing step so that the detergent is flowed in by water (for example, refer to patent document 2).

However, in the case of the above-described structure, the detergent supplied in the washing step may remain in the detergent supply device during the execution of the pre-washing step. Therefore, in the pre-cleaning step, if the detergent contains moisture, the detergent is difficult to be discharged from the detergent supply device. Therefore, in the conventional dish washing machine, a method of applying vibration to the detergent supply device and a method of discharging the detergent by flowing water into the detergent supply device are conceivable. However, in the case of these methods, the structure is complicated.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2000-300498

Patent document 2: japanese patent laid-open publication No. 2005-131054

Disclosure of Invention

The invention provides a dishwasher, which can prevent water from entering a detergent container in a pre-washing step and reliably supply detergent in the washing step with a simple structure.

The dish washing machine of the present invention comprises: a dish basket for accommodating objects to be washed; a washing tub for accommodating a dish basket; a detergent supply device for supplying detergent into the cleaning tank; and a control unit for controlling a cleaning operation including at least a pre-cleaning step, a cleaning step, and a rinsing step. The detergent supply device comprises: a detergent container having an opening portion rotatably provided; a lid portion closing the opening portion in a pre-cleaning step; and a rotation mechanism for rotating the detergent container to a state in which the detergent stored in the detergent container is discharged.

With this structure, water can be prevented from entering into the detergent container in the pre-cleaning step. In the washing step, the detergent container is rotated in a state in which the detergent in the detergent container is discharged into the washing tub. Thus, a dishwasher capable of reliably supplying detergent with a simple structure can be realized.

Drawings

FIG. 1 is a view showing a cross section of a main part of a dish washing machine according to embodiment 1 of the present invention.

FIG. 2 is a perspective view of a main portion of the inside of the washing tub of the dish washing machine.

FIG. 3 is a perspective view of the detergent supply device of the dish washing machine.

FIG. 4 is a top view of a detergent container of the detergent supply device of the dish washing machine.

Fig. 5A is a side view of a main part of a detergent container of the dish washing machine with an opening portion facing upward.

Fig. 5B is a main part sectional view of the detergent container in the left-right direction with the opening portion facing upward.

Fig. 6 is a perspective view of the detergent supply device of the dish washing machine in a state in which detergent is discharged.

Fig. 7A is a side view of a main part showing an operation of discharging detergent from a detergent container of the dish washing machine.

Fig. 7B is a main part sectional view in the left-right direction in a state in which the detergent is discharged from the detergent container.

FIG. 8 is a perspective view of a main part of the detergent supply device of the dish washing machine.

Fig. 9 is a main part sectional view in the left-right direction of the detergent container of the detergent supply device of the dish washing machine in a state where the opening of the detergent container is covered with the cover.

Fig. 10 is a perspective view of the dish washing machine according to embodiment 2 of the present invention in a state in which the movable portion is pulled out from the housing.

FIG. 11 is a perspective view of a detergent supply device of a conventional dish washing machine.

FIG. 12 is a sectional view of the detergent supply device of the dish washing machine.

Detailed Description

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, a dish washing machine according to embodiment 1 of the present invention will be described with reference to fig. 1 to 9.

FIG. 1 is a view showing a cross section of a main part of a dish washing machine according to embodiment 1 of the present invention. In detail, fig. 1 shows a state in which the dish washing machine is built in the whole kitchen SK. FIG. 2 is a perspective view of a main portion of the inside of the washing tub of the dish washing machine. FIG. 3 is a perspective view of the detergent supply device of the dish washing machine. FIG. 4 is a top view of a detergent container of the detergent supply device of the dish washing machine. Fig. 5A is a side view of a main part of a detergent container of the dish washing machine with an opening portion facing upward. Fig. 5B is a cross-sectional view of a main part of the detergent container of the dish washing machine in the left-right direction with the opening portion facing upward. Fig. 6 is a perspective view of the detergent supply device of the dish washing machine in a state in which detergent is discharged. Fig. 7A is a side view of a main part showing an operation of discharging detergent from a detergent container of the dish washing machine. Fig. 7B is a main part sectional view in the left-right direction in a state in which detergent is discharged from a detergent container of the dish washing machine. FIG. 8 is a perspective view of a main part of the detergent supply device of the dish washing machine. Fig. 9 is a main part sectional view in the left-right direction of the detergent container of the detergent supply device of the dish washing machine in a state where the opening of the detergent container is covered with the cover.

In fig. 1 to 9, the dish washing machine of embodiment 1 includes a casing 1, a washing tub 2, a washing pump 3, a water supply valve 4, a door 5, and the like. In the following embodiments, as shown in the drawings, the front side is the direction in which the door 5 and the cleaning tank 2 are pulled out, and the rear side is the direction in which the cleaning tank 2 is stored and the door 5 is closed. The description will be made with the dish washing machine having its installation side as the lower side, the opposite side as the upper side, and the right side as the right side and the left side as the left side facing the front surface of the door body 5.

As shown in fig. 1, the housing 1 has a front surface opening portion 1a on the front surface. The washing tub 2 includes a dish basket 6, a washing nozzle 7, a drain port 8, a residue filter 9, and the like therein. The cleaning tank 2 is provided inside the housing 1 so as to be capable of being pulled out or pushed in the front-rear direction. The cleaning tank 2 has an upper surface opening 2a on the upper surface. When the cleaning tank 2 is stored in the case 1, the upper surface opening 2a is closed by the inner lid 10 disposed in the case 1. The inner lid 10 is moved up and down in association with the pulling out or pushing in of the wash bowl 2 by the link mechanism 11. The upper surface opening 2a is provided with a sealing portion 12 formed of, for example, a deformable hollow rubber tube at the periphery. When the cleaning tank 2 is stored in the housing 1, the sealing portion 12 is compressed by the inner lid 10 which is lowered. Thereby, the upper surface opening 2a is sealed by the sealing portion 12.

The dish basket 6 is used for placing objects 13 to be washed such as dishes. The door 5 is provided at the front of the cleaning tank 2 and covers the front surface of the housing 1 when stored. The water supply valve 4 is provided in a water supply path 30 at the rear of the inside of the housing 1. By opening the water supply valve 4, tap water, for example, is supplied to the washing tub 2 as washing water. The cleaning pump 3 is disposed on the bottom surface in the housing 1. The cleaning nozzle 7 is provided on the bottom surface side in the cleaning tank 2. The washing pump 3 pressurizes and delivers washing water to the washing nozzle 7. The washing nozzle 7 rotates by the discharge of the washing water supplied under pressure and sprays the washing water toward the object 13 to be washed. That is, the cleaning pump 3 pressurizes the cleaning water stored in the cleaning tank 2 to supply it to the cleaning nozzle 7. The cleaning water sprayed from the cleaning nozzle 7 collides with the object 13 to be cleaned, and washes away dirt adhering to the object 13 to be cleaned. Thereby cleaning the object 13 to be cleaned. The cleaning water includes a cleaning liquid that contains a detergent and is sprayed onto the object 13 to be cleaned, and rinse water for rinsing the object 13 to be cleaned.

The water outlet 8 is arranged at the bottom of the cleaning tank 2. The residue filter 9 is detachably disposed in the drain port 8, and collects the residue cleaned and removed from the object 13 to be cleaned. The heater 14 is configured to be immersed in the cleaning water stored at the bottom inside the cleaning tank 2. The heater 14 heats the cleaning water stored in the cleaning tank 2 in the cleaning step. The heater 14 heats the drying air in the cleaning tank 2 in the drying step. The temperature sensor 15 is disposed outside the bottom surface of the cleaning tank 2, for example, and detects the temperature of the cleaning tank 2. The temperature sensor 15 is formed of, for example, a thermistor or the like.

The suction side of the cleaning pump 3 communicates with the drain port 8, and the cleaning water from which the residue is removed by the residue filter 9 is circulated. The cleaning pump 3 is configured to discharge the cleaning water from which the residue is removed by reversing the rotation direction of the motor during the circulation.

The detergent supply device 16 is disposed on a side surface of the cleaning tank 2 opposite to the door 5, and supplies detergent into the cleaning tank 2. The detergent supply device 16 includes a detergent container 17 for storing a predetermined amount of detergent, a supply device main body 18 for supporting the detergent container 17 in the cleaning tank 2, and the like. The detergent container 17 has a shaft portion 19 provided in the right-left direction in parallel with the front side surface of the washing tub 2 at the bottom portion 17 a. The detergent container 17 is rotatably supported by a support portion 20 provided in the supply device main body 18 via a shaft portion 19. That is, the detergent container 17 is rotatably disposed around the shaft 19 in the direction of arrow a shown in fig. 2.

The detergent container 17 has a bottom 17a, a wall surface 17b, an opening 21, and the like. The opening 21 is formed in a substantially quadrangular shape (including a quadrangle), and detergent can be introduced into the opening 21. The wall surface 17b is disposed at a position at least toward the rotation direction side from the bottom 17a of the detergent container 17 toward the opening 21. That is, the wall surface 17b is inclined so as to expand outward as going toward the opening 21.

The detergent container 17 further includes an engaging portion 22 for holding the opening 21 in an upward state. On the other hand, the supply device main body 18 includes an engagement portion 23 that engages with the engagement portion 22 of the detergent container 17. The engagement portion 22 is provided on the supply device main body 18 so as to be movable in the direction of arrow B (leftward) (see fig. 4). At this time, the fitting portion between the engaging portion 22 and the locking portion 23 is formed in a substantially V-shape (including V-shape) concave-convex shape, for example.

The detergent supply device 16 has a driving unit 24 provided in the supply device main body 18 and constituting a rotation mechanism. The rotation mechanism further includes an engagement portion 22, a locking portion 23, a coupling portion 25, and the like. The driving unit 24 cooperates with the locking unit 23 of the supply device body 18 via the coupling unit 25.

The driving section 24 is formed of an electromagnetic mechanism 26 having a solenoid coil, for example. By energizing the solenoid coil, the connecting portion 25 is moved in the direction of arrow C (left direction) shown in fig. 3. At this time, the shaft 23a of the locking portion 23 coupled to the coupling portion 25 rotates in the direction of arrow D in association with the coupling portion 25. Thereby, the locking portion 23 of the supply device main body 18 moves in the arrow B direction (rightward), and is disengaged from the engagement portion 22 of the detergent supply device 16.

At this time, the detergent container 17 is biased by, for example, a spring (not shown) disposed on the shaft portion 19 so as to rotate in a direction (see fig. 6) to bring the opening 21 into a downward state. Therefore, when the locking portion 23 of the supply device main body 18 is disengaged from the engagement portion 22 of the detergent container 17, the detergent container 17 is rotated in the arrow a direction (see fig. 2 and 7A) by the urging force of the spring. Then, when the detergent container 17 rotates, the wall surface 17b located at the lower side of the detergent container 17 is inclined so as to become lower as going toward the opening 21. As a result, the detergent in the detergent container 17 slides down in the direction of arrow E shown in fig. 7A on the wall surface 17b inclined downward, and is discharged into the washing tub 2. At this time, the urging force of the spring is set to be optimal, and the detergent container 17 is rotated in the arrow a direction, so that the detergent is discharged.

In addition, the urging force of the spring is not necessarily required. For example, the detergent container 17 may be configured in such a manner that the position of the center of gravity of the detergent container 17 itself is disposed on the rotation side. The detergent container 17 may be configured such that a weight or the like is added to the rotation side of the detergent container 17 to be biased. Thus, when the locking portion 23 is disengaged from the engaging portion 22, the detergent container 17 rotates in the direction of arrow a shown in fig. 7A by its own weight, and the detergent is discharged.

Here, the downward state of the detergent container 17 refers to a state in which the detergent stored in the detergent container 17 is discharged (dropped) from the detergent container 17. That is, in the present embodiment, when the detergent is turned to a state in which the detergent is discharged from the detergent container 17, the wall surface 17b of the detergent container 17 is inclined downward so as to become lower toward the opening 21. Therefore, the detergent in the detergent container 17 may slip off at the inclined wall surface 17 b. Further, even if the opening surface of the opening 21 of the detergent container 17 is substantially vertical (including vertical), the structure capable of discharging the detergent is included.

As shown in fig. 5A, 5B, 7A, and 7B, the detergent supply device 16 includes a water injection portion 27 for injecting water into the detergent container 17. The water injection portion 27 includes a water injection hole 27a provided at the bottom of the detergent container 17 and an opening/closing portion 27b for opening/closing the water injection hole 27 a. The opening/closing portion 27b is provided in the supply device main body 18, and the detergent container 17 is pivotally mounted to the supply device main body 18 so as to be rotatable. When the opening 21 of the detergent container 17 is turned downward (the detergent is discharged), the water filling hole 27a closed by the opening/closing portion 27b is opened.

The supply device main body 18 has a water injection path 28 communicating with the water injection portion 27. The water injection path 28 is provided to branch from the cleaning pump 3 to the cleaning path 29 of the cleaning nozzle 7. The water injection path 28 may be branched from the water supply path 30 extending from the self-supply valve 4 to the cleaning tank 2.

As shown in fig. 1, an opening 21 (see fig. 2) of the detergent container 17 is disposed at a position close to an opening surface of the upper surface opening 2a on a side surface of the front side of the cleaning tank 2 in an upward state. The lid 31 is provided on the inner lid 10, and when the cleaning tank 2 is stored in the housing 1, the lid 31 closes the opening 21 of the detergent container 17 in the upward state.

The detergent container 17 further includes a 1 st rib 32 standing on the periphery of the opening 21, an eave-like extension 33 extending outward from the side wall of the detergent container 17, and the like. The extension 33 has a groove 34 on the upper surface. The groove 34 is formed to be recessed downward along the outer circumference of the 1 st rib 32. The extension 33 and the groove 34 are provided in, for example, a substantially U-shape (including a U-shape) along the outer periphery of the 1 st rib 32. The lid portion 31 of the inner lid 10 has a 2 nd rib 35 formed to stand downward. As shown in fig. 9, the 2 nd rib 35 is provided so as to surround the 1 st rib 32 from the outside. The extension 33 of the detergent container 17 and the 2 nd rib 35 of the cover 31 block the washing water sprayed from the washing nozzle 7 in a state of closing the opening 21 of the detergent container 17, preventing it from entering the detergent container 17.

The end 34a of the groove 34 is open toward the door 5. Thus, the water flowing along the groove 34 falls from the end 34a into the washing tub 2, and thus the water is prevented from stagnating in the groove 34.

As shown in fig. 1, the control unit 36 is disposed inside the door 5, and controls the washing operation of the dishwasher. Specifically, the control unit 36 sequentially controls a pre-cleaning step for washing out large dirt adhering to the object 13, a cleaning step for cleaning the object 13, a rinsing step for washing out detergent and residues adhering to the object 13, and the like, and performs a cleaning operation.

The dish washing machine of the present embodiment is constructed as described above.

Next, the operation of the dish washing machine having the above-described configuration will be described.

First, the user pulls out the washing tub 2 from the housing 1 of the dish washing machine by holding the handle 5a of the door 5. At this time, the inner lid 10 is lifted up by the link mechanism 11 in conjunction with the pulling-out operation of the cleaning tank 2, and the inner lid 10 is separated from the upper surface opening 2a of the cleaning tank 2.

Next, the user places the objects 13 to be washed such as dishes in the dish basket 6 through the upper surface opening 2a of the washing tub 2. Further, the user manually rotates the detergent container 17 with the opening 21 facing downward against the urging force of the spring to the upward state. At this time, the locking portion 23 of the supply device main body 18 is locked to the locking portion 22 of the detergent container 17. Thereby, the opening 21 of the detergent container 17 is kept in an upward state. Then, the user inputs a predetermined amount of detergent into the detergent container 17 with the opening 21 facing upward.

Next, the user pushes the cleaning tank 2 into the housing 1, and closes the front surface opening 1a of the housing 1 with the door 5. At this time, the inner lid 10 is lowered in conjunction with the pushing action of the cleaning tank 2 by the link mechanism 11. Thereby, the sealing portion 12 is compressed by the inner lid 10, and the upper surface opening 2a of the cleaning tank 2 is sealed.

Next, the user sets an operation program by an operation unit (not shown) connected to the control unit 36, and starts the cleaning operation by operating a start button (not shown). Thereby, the control unit 36 executes the washing operation of the dish washing machine based on the set operation program.

Hereinafter, the pre-cleaning step, the rinsing step, and the drying step for drying the object to be cleaned 13, which are sequentially performed by the control unit 36, will be described in more detail.

First, the pre-cleaning step is explained.

In the pre-cleaning step, first, the control unit 36 operates the water supply valve 4 to supply a predetermined amount of cleaning water to the cleaning tank 2. At this time, the opening 21 of the detergent container 17 in which the detergent is placed is closed by the lid 31 of the inner lid 10 in an upward state. Therefore, the detergent in the detergent container 17 is not supplied into the cleaning tank 2.

When the water supply is completed, the control part 36 closes the water supply valve 4 and drives the wash pump 3. The washing pump 3 pressurizes and delivers washing water to the washing nozzle 7. Thereby, the cleaning water containing no detergent is sprayed from the cleaning nozzle 7 disposed near the bottom of the cleaning tank 2 toward the object 13 to be cleaned.

At this time, a part of the washing water pressurized by the washing pump 3 flows through the water injection path 28 provided to branch from the washing pump 3 to the washing path 29 of the washing nozzle 7. However, in the pre-cleaning step, the water injection hole 27a of the water injection part 27 is closed by the opening and closing part 27 b. Therefore, the washing water reaching the water injection portion 27 communicating with the water injection path 28 does not flow into the detergent container 17, but flows in the direction of arrow F shown in fig. 5B and returns to the inside of the washing tub 2. In addition, for the pre-cleaning step, water at normal temperature is generally used for execution.

On the other hand, the water sprayed from the cleaning nozzle 7 collides with the extension 33 formed on the detergent container 17 and the 2 nd rib 35 formed on the cover 31. At this time, the water blocked by the 2 nd rib 35 and flowing downward flows in the direction of arrow G shown in fig. 8 in the groove 34, and falls from the end 34a of the groove 34 into the cleaning tank 2. Thereby, water can be prevented from entering the detergent container 17 in the pre-washing step.

After that, the control section 36 performs the pre-cleaning step for a predetermined time (for example, about 20 minutes). Then, when a predetermined time elapses, the control unit 36 reverses the rotation direction of the motor of the cleaning pump 3 in the pre-cleaning step. This discharges the cleaning water containing dirt in the cleaning tank 2 from the drain port 8 to the outside of the casing 1.

The pre-cleaning step is completed according to the above.

Next, a cleaning step performed next to the pre-cleaning step will be described.

In the cleaning step, first, the control unit 36 operates the water supply valve 4 to supply a predetermined amount of cleaning water to the cleaning tank 2 again through the water supply path 30. Then, the control unit 36 rotates the detergent container 17 by the operation of the electromagnetic mechanism 26 of the driving unit 24, and supplies the detergent placed in the detergent container 17 to the washing tub 2. That is, when the solenoid coil of the electromagnetic mechanism 26 is energized, the coupling portion 25 moves in the direction of arrow C (leftward) as shown in fig. 3. At the same time, the shaft 23a of the locking portion 23 connected to the connecting portion 25 rotates in the direction of arrow D in association with the operation of the connecting portion 25. Thereby, the locking portion 23 of the supply device main body 18 moves in the arrow B direction (rightward), and is disengaged from the engagement portion 22 of the detergent container 17.

When the engaging portion 22 of the detergent container 17 is disengaged from the engaging portion 23 of the supply device main body 18, the detergent container 17 is rotated rearward and downward by the urging force of the spring disposed on the shaft portion 19. That is, the detergent container 17 rotates in the direction of arrow a shown in fig. 7A around the shaft 19 (see fig. 7B) from the state where the opening 21 is upward. Then, the opening 21 of the detergent container 17 is separated from the lid 31 and is in a downward state. Thus, the detergent in the detergent container 17 slides down in the direction of arrow E on the inclined wall surface 17b, and is discharged into the washing tub 2.

When the water supply is completed, the control part 36 closes the water supply valve 4 and drives the wash pump 3. The washing pump 3 pressurizes and delivers washing water to the washing nozzle 7. Thereby, the cleaning water containing the detergent is sprayed from the cleaning nozzle 7 disposed near the bottom of the cleaning tank 2 toward the object 13 to be cleaned.

At this time, a part of the washing water pressurized by the washing pump 3 flows through the water injection path 28 provided to branch from the washing pump 3 to the washing path 29 of the washing nozzle 7. Then, the washing water having reached the water injection portion 27 communicating with the water injection path 28 flows into the detergent container 17 from the water injection hole 27a opened by the rotation of the detergent container 17 rearward and downward in the arrow H direction shown in fig. 7B. Thereby, the cleaning water flowing into the cleaning tank 17 from the side of the cleaning tank 17 flows out from the opening 21 to the cleaning tank 2. Therefore, even if detergent remains in the detergent container 17, for example, due to the inflow of the washing water, the detergent is not left, but reliably flows out to the washing tub 2.

The water injection path 28 may be branched from the water supply path 30 extending from the self-supply valve 4 to the cleaning tank 2. In this case, at the time of water supply in the washing step and the rinsing step, water flows into the detergent container 17 from the water injection hole 27a opened by the rotation of the detergent container 17 rearward and downward. Thus, the detergent does not remain in the detergent container 17, but flows out into the washing tub 2 more reliably.

Next, the control unit 36 sprays the cleaning water from the cleaning nozzle 7 and energizes the heater 14 to heat the cleaning water to a predetermined temperature. At this time, the control unit 36 detects the temperature of the washing water by the wall of the bottom surface of the washing tub 2 using the temperature sensor 15. Then, the control unit 36 controls the washing water to a predetermined temperature based on the detected temperature information.

The cleaning water sprayed from the cleaning nozzle 7 cleans dirt on the object 13 to be cleaned, and is again sucked into the cleaning pump 3 through the residue filter 9 and the drain port 8. The cleaning pump 3 pressurizes and conveys the sucked cleaning water, and supplies the cleaning water again to the cleaning nozzle 7. The washing water is circulated repeatedly as described above, and the object 13 is washed.

After that, the control section 36 performs the cleaning step for a predetermined time (for example, about 30 minutes). Then, when a predetermined time elapses, the control unit 36 reverses the rotation direction of the motor of the washing pump 3 in the washing step. This discharges the cleaning water containing dirt in the cleaning tank 2 from the drain port 8 to the outside of the casing 1.

The cleaning step is completed according to the above.

Next, a rinsing step performed next to the washing step will be described.

In the rinsing step, first, the control unit 36 operates the water supply valve 4 to supply a predetermined amount of cleaning water again to the cleaning tank 2 via the water supply path 30. Then, the control unit 36 drives the cleaning pump 3 in the same manner as in the cleaning step, and sprays the cleaning water from the cleaning nozzle 7 toward the object 13 to be cleaned. Thereby, the detergent, residues, and the like remaining in the object 13 to be cleaned are washed away with the cleaning water. In this case, the rinsing operations such as the discharge of the washing water, the rinsing, and the supply of the washing water are repeatedly performed a plurality of times (for example, 2 to 3 times).

The rinsing step is completed according to the above.

Next, at the end of the rinsing step, the control section 36 next performs a drying step.

Specifically, the control unit 36 heats the air in the cleaning tank 2 by the heater 14. Then, the heated air is blown by a fan (not shown), and the object to be cleaned 13 is dried. After that, the control unit 36 performs the drying step for a predetermined time (for example, 30 minutes) and ends the drying step.

According to the above, the washing operation of the dish washing machine is ended.

At this time, when the object 13 to be cleaned is taken out from the cleaning tank 2 after the operation is completed, the detergent container 17 in a downward state in which the detergent is discharged is preferably rotated manually against the urging force of the spring, and the opening 21 is kept in an upward state. Thus, the convenience of using the tableware cleaning machine next time is improved.

In the above embodiment, the example in which the rotation mechanism for rotating the detergent container 17 of the detergent supply device 16 is constituted by the engaging portion 22, the locking portion 23, the driving portion 24, the coupling portion 25, and the like, and the driving portion 24 is constituted by the electromagnetic mechanism 26 having a solenoid coil has been described, but the present invention is not limited thereto. For example, instead of the solenoid coil, an electric motor may be used. Instead of using the rotation mechanism of the coupling portion 25, for example, a motor may be incorporated in the shaft portion 19 of the detergent container 17, and the detergent container 17 may be rotated directly by the motor.

As described above, the dish washing machine of the present embodiment includes: a dish basket 6 for accommodating objects 13 to be washed; a washing tub 2 for accommodating a cutlery basket 6; a detergent supply device 16 for supplying a detergent into the cleaning tank 2; and a control unit 36 for controlling a cleaning operation including at least a pre-cleaning step, a cleaning step, and a rinsing step. The detergent supply device 16 includes: a detergent container 17 having an opening 21 rotatably provided; a rotation mechanism such as a driving unit 24 for rotating the detergent container 17 in a state in which the opening 21 of the detergent container 17 is kept in an upward state and the detergent contained in the detergent container 17 is discharged; and a lid 31 that closes the opening 21 at the time of the pre-cleaning step. The control unit 36 is configured to rotate the detergent container 17 from the upward state to the detergent discharge state at a predetermined timing of supplying the detergent by the rotation mechanism.

With this structure, in the pre-cleaning step, water can be prevented from entering the detergent container 17. In the washing step, the detergent container 17 is rotated in a state in which the detergent in the detergent container 17 is discharged, that is, in a state in which the detergent falls from the detergent container 17. Thereby, the detergent in the detergent container 17 is discharged into the washing tub 2. As a result, the detergent can be reliably supplied into the cleaning tank 2 with a simple structure.

In addition, centrifugal force acts on the detergent by the rotation of the detergent container 17 itself. Therefore, the detergent is not likely to remain in the detergent container 17, and the detergent can be reliably discharged to the washing tub 2. In the washing step and the rinsing step, the opening 21 of the detergent container 17 is opened downward in the detergent container 17. Therefore, the inside of the detergent container 17 can be cleaned by the water sprayed from the cleaning nozzle 7. This can keep the inside of the detergent container 17 clean.

In addition, in the present embodiment, the rotation mechanism includes: a locking part 23 for locking the opening 21 of the detergent container 17 in an upward state; a driving unit 24 that rotates the detergent container 17 in a state in which the detergent stored in the detergent container 17 is discharged, in cooperation with the locking unit 23; and a shaft portion 19 rotatably supporting the detergent container 17. The control unit 36 is configured to release the locking of the detergent container 17 by the driving unit 24 at a predetermined timing of supplying the detergent, and rotate the detergent container 17 from the upward state to the state of releasing the detergent.

With this structure, in the pre-cleaning step, water can be prevented from entering the detergent container 17. In the washing step, the detergent container 17 rotates in a state in which the detergent in the detergent container 17 is discharged, that is, in a state in which the detergent falls from the detergent container 17, and the detergent in the detergent container 17 is discharged into the washing tub 2. Therefore, the detergent can be reliably supplied to the cleaning tank 2 with a simple structure. Further, since centrifugal force generated by the rotation of the detergent container 17 itself acts on the detergent, the detergent is not likely to remain in the detergent container 17, and the detergent can be reliably discharged.

In the present embodiment, the detergent supply device 16 includes a water injection portion 27 for injecting water into the detergent container 17, and the water injection portion 27 includes a water injection hole 27a provided in the detergent container 17 and an opening/closing portion 27b for opening/closing the water injection hole 27a. The opening/closing portion 27b is configured to open the water injection hole 27a when the detergent container 17 is rotated to a state in which the detergent is discharged.

With this structure, in the washing step and the rinsing step, water flows into the detergent container 17 from the opened water injection hole 27a. Therefore, the detergent remaining in the detergent container 17 can be washed away by the inflow water, and can be discharged to the washing tub 2 more reliably. In particular, in the case where the object 13 to be cleaned is a large-sized cooking device (for example, a pot, a basin, or the like), the inflow of the cleaning water injected from the cleaning nozzle 7 into the detergent container 17 may be blocked by the cooking device or the like. However, by directly flowing the washing water into the detergent container 17 through the water injection hole 27a, the detergent can be reliably discharged to the washing tub 2. Further, the water injection hole 27a is opened and closed by the rotation of the detergent container 17, and therefore the structure of the opening and closing part 27b can be simplified.

In the present embodiment, the detergent supply device 16 includes a shaft portion 19 provided at the bottom portion 17a of the detergent container 17, and a support portion 20 rotatably supporting the shaft portion 19, and the water injection hole 27a is provided at the bottom portion 17a of the detergent container 17.

With this structure, water flowing in from the bottom 17a in the detergent container 17 in the lateral direction of the detergent container 17 first flows in the direction along the shaft portion 19. After that, the water flows toward the opening 21 in the detergent container 17. Therefore, the detergent can be more reliably prevented from remaining in the detergent container 17, and the detergent can be discharged to the washing tub 2.

In the present embodiment, the water injection portion 27 is provided with a water injection path 28 branched from the cleaning path 29.

With this structure, the water pressurized by the cleaning pump 3 can be flowed into the detergent container 17 in the cleaning step and the rinsing step. In particular, in the case where the object 13 to be cleaned is a large-sized cooking device (for example, a pot, a basin, or the like), the inflow of the cleaning water injected from the cleaning nozzle 7 into the detergent container 17 may be blocked by the cooking device or the like. Even in this case, the cleaning water can be directly introduced into the detergent container 17 from the cleaning path 29 through the water injection path 28.

In the present embodiment, the water injection portion 27 is provided with a water injection path 28 branched from the water supply path 30.

With this structure, the water supplied from the water supply valve 4 can be flowed into the detergent container 17 in the washing step and the rinsing step. In particular, in the case where the object 13 to be cleaned is a large-sized cooking device (for example, a pot, a basin, or the like), the inflow of the cleaning water injected from the cleaning nozzle 7 into the detergent container 17 may be blocked by the cooking device or the like. Even in this case, water can be directly introduced into the detergent container 17 from the water supply path 30.

In addition, in the present embodiment, it has: a cleaning tank 2 provided in the housing 1 so as to be capable of being pulled out or pushed in, the cleaning tank having an upper surface opening 2a on an upper surface; and an inner lid 10 closing the upper surface opening 2a when the cleaning tank 2 is housed in the case 1. Further, a lid 31 for closing the opening 21 of the detergent container 17 in the upward state is provided in the inner lid 10.

With this structure, the opening 21 of the detergent container 17 is opened and closed in conjunction with the pulling-out or pushing-in operation of the washing tub 2. Thus, when the user puts the detergent into the detergent container 17, the opening 21 of the detergent container 17 does not need to be opened and closed by the lid. Therefore, usability such as workability and operability can be improved.

In the present embodiment, the detergent container 17 has the 1 st rib 32 standing up on the peripheral edge of the opening 21 and the eave-shaped extension 33 provided outside the 1 st rib 32. The lid 31 further includes a 2 nd rib 35 formed so as to surround the 1 st rib 32 from the outside.

With this structure, in the pre-cleaning step, the opening 21 of the detergent container 17 can be covered with the cover 31. Further, in the cleaning step, the opening portion 21 of the detergent container 17 can be disengaged from the lid portion 31 and turned downward. In addition, the water sprayed from the cleaning nozzle 7 can be blocked by the extension 33. The 2 nd rib 35 formed so as to surround the 1 st rib 32 from the outside can also be used to block water from entering the detergent container 17. The water blocked by the 2 nd rib 35 can fall down into the cleaning tank 2 along the groove 34 formed on the upper surface of the extension 33.

In the present embodiment, the opening 21 of the detergent container 17 is provided in the vicinity of the upper surface opening 2a of the cleaning tank 2.

With this configuration, the lid 31 closing the opening 21 in the upward state can be miniaturized. That is, the inner lid 10 having the lid portion 31 descends to close the upper surface opening portion 2a when the cleaning tank 2 is housed in the case 1. Therefore, the opening 21 of the detergent container 17 is disposed at a position close to the opening surface of the upper surface opening 2a of the washing tub 2. Thus, the height of the cover 31 protruding downward can be made low in the cleaning tank 2.

(embodiment 2)

Hereinafter, a dish washing machine according to embodiment 2 of the present invention will be described with reference to fig. 10.

As shown in fig. 10, the dish washing machine of embodiment 2 differs from the dish washing machine of embodiment 1 in the following respects.

That is, the washing tub 52 of the dish washing machine is formed of a washing space 54 surrounded by the inside of the housing 51 and the inner surface of the door 53. The cleaning space 54 is fixed in the housing 51. The above-described configuration differs from the case 51 in that the door 53 is supported in a state capable of moving back and forth by a support mechanism 60 including a support member 61 and a slide rail 62. Other structures are similar to those of embodiment 1, and therefore, embodiment 1 may be referred to and description thereof may be omitted.

As shown in fig. 10, the dish washing machine of embodiment 2 includes a housing 51, a washing tub 52, a door 53, a washing space 54, and the like. The housing 51 has a front surface opening portion 51a whose front surface is entirely open. The cleaning tank 52 is formed inside a housing 51 provided with a front surface opening 51a. The door 53 is disposed so as to cover the front surface opening 51a. The cleaning space 54 is formed by the cleaning tank 52 and the door 53. The lower basket 56 and the upper basket 57 on which the objects 55 to be washed such as dishes are placed are disposed in the washing space 54 so as to be movable back and forth.

The lower basket 56 and the upper basket 57 move in the front-rear direction together with the door 53 when they are locked to the door 53. On the other hand, when the locking of the door 53 is released, the lower basket 56 and the upper basket 57 move independently of the door 53. That is, in embodiment 2, the lower and upper cutlery baskets 56 and 57 have a form of moving integrally with the door 53 and a form of moving independently of the door 53.

The door 53 has an operation portion 58 provided on the upper surface 53 a. The control unit 59 is provided inside the door 53 below the operation unit 58. The door 53 is supported by the housing 51 by a support mechanism 60 so as to be movable in the front-rear direction. The support mechanism 60 includes a support member 61, a slide rail 62, and the like. Slide rails 62 are attached to inner surfaces of the left and right sides of the housing 51 at outer lower portions of the cleaning tank 52.

The support member 61 is formed of a metal plate such as stainless steel, and the front end portion 61a is fixed to the inner lower portion of the door 53. The support member 61 is fixed to a 2 nd movable rail (not shown) of the slide rail 62. When the door 53 moves forward, the support member 61 and the 2 nd movable rail support the door 53 substantially vertically (including vertically) and move forward integrally with the 1 st movable rail (not shown). Thereby, the slide rail 62 is elongated.

According to embodiment 2, the cleaning tank 52 is configured separately, and the accessory device does not move. That is, the moving part is constituted by the door 53, the lower basket 56, the upper basket 57, the cleaning nozzle, and the like. Therefore, the moving part can be made lightweight.

In the dishwasher of embodiment 2, the detergent supply device 16 of the dishwasher of embodiment 1 is disposed, for example, inside a door 53 constituting a side wall of the front surface of the washing tub 52.

In addition, the dish washing machine of embodiment 2 is not provided with the inner lid 10. Therefore, although not shown, the lid 31 sealing the opening 21 of the detergent container 17 of the detergent supply device 16 is independently provided above the opening 21 in the form of an openable lid. As a result, the detergent can be supplied into the washing tub 52 more reliably in the washing step, as in the dishwasher of embodiment 1.

In addition to the embodiments of embodiment 1 and embodiment 2, there is an upper opening structure in which the door body is turned upward to open and close the door body. The detergent supply device disclosed in the above embodiments can be applied to an open-type dishwasher. Specifically, for example, a detergent supply device may be provided on a side wall of the cleaning tank formed below the door.

As described above, the dish washing machine of the present invention includes: a dish basket for accommodating objects to be washed; a washing tub for accommodating a dish basket; a detergent supply device for supplying detergent into the cleaning tank; and a control unit for controlling a cleaning operation including at least a pre-cleaning step, a cleaning step, and a rinsing step. The detergent supply device comprises: a detergent container having an opening portion rotatably provided; a lid portion closing the opening portion in a pre-cleaning step; and a rotation mechanism for rotating the detergent container to a state in which the detergent stored in the detergent container is discharged.

With this structure, in the pre-cleaning step, water can be prevented from entering the detergent container. In the washing step, the detergent container is rotated in a state in which the detergent in the detergent container is discharged, that is, in a state in which the detergent is dropped from the detergent container. Thereby, the detergent in the detergent container is discharged into the washing tub. As a result, the detergent can be reliably supplied into the cleaning tank with a simple structure. In addition, centrifugal force acts on the detergent due to the rotation of the detergent container itself. Therefore, the detergent is not likely to remain in the detergent container, and the detergent can be reliably discharged to the washing tub. In the washing step and the rinsing step, the opening of the detergent container is opened downward. Therefore, the inside of the detergent container can be washed by the water sprayed from the washing nozzle. This can maintain the inside of the detergent container in a clean state.

In addition, the rotating mechanism of the dish washing machine of the present invention may further comprise: a locking part for locking the opening of the detergent container in an upward state; a driving part which cooperates with the locking part to rotate the detergent container to a state of releasing the detergent stored in the detergent container; and a shaft portion that rotatably supports the detergent container. The control unit is configured to release the engagement of the detergent container by the driving unit at a predetermined timing of supplying the detergent, and rotate the detergent container from the upward state to the state of releasing the detergent.

With this structure, in the pre-cleaning step, water can be prevented from entering the detergent container. In the washing step, the detergent container is rotated in a state in which the detergent in the detergent container is discharged, that is, in a state in which the detergent is dropped from the detergent container, and the detergent in the detergent container is discharged into the washing tub. Therefore, the detergent can be reliably supplied to the cleaning tank with a simple structure. Further, since centrifugal force generated by the rotation of the detergent container itself acts on the detergent, the detergent is not likely to remain in the detergent container, and the detergent can be reliably supplied.

The detergent supply device of the dish washing machine of the present invention may further include a water injection portion for injecting water into the detergent container, and the water injection portion may include a water injection hole provided in the detergent container and an opening/closing portion for opening/closing the water injection hole. The opening/closing portion is configured to open the water injection hole when the detergent container is rotated in a state in which the detergent is discharged.

With this structure, in the washing step and the rinsing step, water flows into the detergent container from the opened water injection hole. Therefore, the detergent remaining in the detergent container can be washed away by the inflow water, and can be discharged to the washing tub more reliably. In particular, when the object to be cleaned is a large-sized cooking device (for example, a pot, a basin, or the like), even if the inflow of the cleaning water injected from the cleaning nozzle into the detergent container is blocked by the cooking device or the like, the cleaning water can be caused to flow into the detergent container. Further, since the water injection hole is opened and closed by the rotation of the detergent container, the structure of the opening and closing part can be simplified.

The detergent supply device of the dish washing machine of the present invention may further include a shaft portion provided at the bottom of the detergent container, and a support portion rotatably supporting the shaft portion, wherein the water injection hole is provided at the bottom of the detergent container.

With this structure, water flowing in from the bottom of the detergent container first flows in a direction along the shaft portion. After that, the water flows toward the opening in the detergent container. Therefore, the detergent can be more reliably prevented from remaining in the detergent container, and the detergent can be flowed into the cleaning tank 2.

In the dish washing machine of the present invention, the water injection portion may be provided with a water injection path branched from the washing path.

With this structure, the water pressurized by the cleaning pump can be flowed into the detergent container in the cleaning step and the rinsing step. In particular, when the object to be cleaned is a large-sized cooking device (for example, a pot, a basin, or the like), the inflow of water injected from the cleaning nozzle into the detergent container may be blocked by the cooking device or the like. In this case, water can be directly introduced into the detergent container from the cleaning path via the water injection path.

In the dish washing machine of the present invention, the water injection portion may be provided with a water injection path branched from the water supply path.

With this configuration, the water supplied from the water supply path can be flowed into the detergent container in the washing step and the rinsing step. In particular, when the object to be cleaned is a large-sized cooking device (for example, a pot, a basin, or the like), the inflow of water injected from the cleaning nozzle into the detergent container may be blocked by the cooking device or the like. Even in this case, water can be directly introduced into the detergent container from the water supply path.

In addition, the dish washing machine of the present invention may further comprise: a cleaning tank provided in the housing so as to be capable of being pulled out or pushed in, the cleaning tank having an upper surface opening portion on an upper surface; and an inner cover closing the upper surface opening when the cleaning tank is housed in the case. Further, a lid portion for closing the opening of the detergent container is provided in the inner lid.

With this structure, the opening of the detergent container is opened and closed in conjunction with the pulling-out or pushing-in operation of the washing tub. Thus, when the user puts the detergent into the detergent container, the opening of the detergent container is not required to be opened or closed by the cover. Therefore, usability such as workability and operability can be improved.

The detergent container of the dish washing machine of the present invention may have a 1 st rib provided upright on the peripheral edge of the opening and an extension provided outside the 1 st rib. The lid portion has a 2 nd rib formed so as to surround the 1 st rib from the outside.

With this structure, in the pre-cleaning step, the opening of the detergent container can be covered with the cover. In the washing step, the opening of the detergent container is disengaged from the lid and can be rotated downward to discharge the detergent. In addition, the water sprayed from the cleaning nozzle can be blocked by the extension portion. Further, the 2 nd rib formed so as to surround the 1 st rib from the outside can be used to block water from entering the detergent container. This allows the water blocked by the 2 nd rib to fall into the washing tub along the groove formed in the upper surface of the extension portion.

The opening of the detergent container of the dish washing machine of the present invention may be provided in the vicinity of the upper surface opening of the washing tub.

With this structure, the lid portion closing the opening portion in the upward state can be miniaturized. That is, when the cleaning tank is accommodated in the housing, the inner lid having the lid portion is lowered to close the upper surface opening portion. Here, the opening of the detergent container is disposed at a position close to the opening surface of the upper surface opening of the washing tub. Thus, the height of the cover protruding downward in the cleaning tank can be made low.

Industrial applicability

The dish washing machine of the present invention can prevent water from entering the detergent container during the pre-washing step. Further, the detergent can be reliably supplied in the washing step with a simple structure. Therefore, the present invention is useful in a dish washer and the like in which it is necessary to suppress the residue of a detergent and the like.

Description of the reference numerals

1. A housing; 1a, 51a, front surface opening portions; 2. a cleaning tank; 2a, an upper surface opening part; 3. a cleaning pump; 4. a water supply valve; 5. 53, door body; 5a, a handle; 6. a cutlery basket; 7. cleaning the nozzle; 8. a water outlet; 9. a residue filter; 10. an inner cover; 11. a link mechanism; 12. a sealing part; 13. 55, the cleaned object; 14. a heater; 15. a temperature sensor; 16. a detergent supply device; 17. a detergent container; 17a, bottom; 17b, wall surfaces; 18. a supply device main body; 19. 73, shaft portion (rotation mechanism); 20. a support (rotation mechanism); 21. an opening portion; 22. an engagement portion (rotation mechanism); 23. a locking part (rotating mechanism); 23a, shaft; 24. a driving unit (rotation mechanism); 25. a connection part (rotation mechanism); 26. an electromagnetic mechanism; 27. a water injection part; 27a, water injection holes; 27b, an opening/closing part; 28. a water injection path; 29. a cleaning path; 30. a water supply path; 31. a cover portion; 32. 1 st rib; 33. an extension; 34. a groove; 34a, end; 35. rib 2; 36. 59, a control unit; 51. a housing; 52. a cleaning tank; 53a, upper surface; 54. cleaning the space; 56. a tableware basket is arranged; 57. loading a tableware basket; 58. an operation unit; 60. a support mechanism; 61. a support member; 61a, a front end portion; 62. a slide rail; 71. a detergent; 72. a container; 74. a shielding member.

Claims

1. A dish washing machine, wherein,

the dish washing machine includes:

a dish basket for accommodating objects to be washed;

a washing tub for accommodating the cutlery basket;

a cleaning nozzle for jetting cleaning water toward the object to be cleaned;

a detergent supply device provided on a front side surface of the cleaning tank, for supplying detergent into the cleaning tank; and

a control unit for controlling a cleaning operation including at least a pre-cleaning step, a cleaning step, and a rinsing step,

the detergent supply device comprises:

a detergent container having an opening portion rotatably provided;

a cover portion closing the opening portion in the pre-cleaning step; and

a rotation mechanism for rotating the detergent container to a state in which the detergent stored in the detergent container is discharged,

the rotation mechanism has:

a locking portion for locking the opening of the detergent container in an upward state;

a driving part which cooperates with the locking part to rotate the detergent container to a state of releasing the detergent stored in the detergent container; and

a shaft portion rotatably supporting the detergent container, the shaft portion being parallel to the side surface of the front side of the washing tub and disposed in a left-right direction,

The control section is configured to control the operation of the motor,

at a predetermined timing of supplying the detergent, the locking of the detergent container is released by the driving unit, and the detergent container is rotated from the upward state to a state in which the detergent is discharged in a rear direction of the washing tub.

2. The dish washing machine as claimed in claim 1, wherein,

the detergent supply device is provided with a water injection part for injecting water into the detergent container,

the water injection part has:

a water injection hole provided in the detergent container; and

an opening/closing part for opening/closing the water injection hole,

the opening/closing portion is configured to open the water injection hole when the detergent container is rotated in a state in which the detergent is discharged.

3. The dish washing machine as claimed in claim 2, wherein,

the shaft portion is provided at the bottom of the detergent container,

the detergent supply device has a support portion for rotatably supporting the shaft portion,

the water injection hole is arranged at the bottom of the detergent container.

4. A dishwasher according to claim 2 or 3, wherein,

the water injection portion is provided with a water injection path branched from the cleaning path.

5. A dishwasher according to claim 2 or 3, wherein,

The water injection portion is provided with a water injection path branched from the water supply path.

6. The dish washing machine according to claim 1 or 2, wherein,

the dish washing machine comprises:

the cleaning tank is arranged in the shell and can be pulled out or pushed in, and an upper surface opening part is formed on the upper surface; and

an inner lid which closes the upper surface opening when the cleaning tank is housed in the housing,

the lid portion for closing the opening portion of the detergent container is provided to the inner lid.

7. The dish washing machine as claimed in claim 6, wherein,

the detergent container has:

a 1 st rib standing up on a periphery of the opening; and

an extension part arranged outside the 1 st rib,

the cover portion has a 2 nd rib formed so as to surround the 1 st rib from the outside.

8. The dish washing machine as claimed in claim 6, wherein,

the opening of the detergent container is provided in the vicinity of the upper surface opening of the washing tub.