JPH04322630A - Dish washer - Google Patents

Abstract

PURPOSE:To increase running efficiency, not to give users unpleasant feeling and odors and also to efficiently use a washing space. CONSTITUTION:The garbage sticking to tablewares 3 drop down and collected in a water-separating vessel 6a in a garbage tank 6 directly or by an induction means 15 by means of a previous washing. Next, washing water is ejected from upper and lower nozzles 7,9 by opening of the damper of the induction means 15 to wash tablewares 3. The upper nozzle 7 is located in the middle of the washing chamber 2 to evenly spray water to every corner of the chamber. A tableware rack 16 extends to the upward part of the residual foods tank 6, where a rack 38 for small dishes is detachably fitted.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher for washing dishes stored in a dish rack by spraying a cleaning liquid onto the dishes.

0002

2. Description of the Related Art A conventional dishwasher is disclosed, for example, in Japanese Patent Publication No. 1-45365. That is, as shown in FIG. 6, a washing chamber B with an open front is provided in the upper part of the casing A, and a leftover food chamber C with an open front like the washing chamber B is provided in the lower part. Furthermore, an upper drawer F that supports a rack E for storing tableware D and that opens and closes the front opening of the washing chamber B is provided in the upper part so as to be freely drawn out from the washing chamber B. A lower drawer H is provided at the bottom to support a leftover container G for receiving leftovers falling from the rack E, and to open and close the front opening of the leftovers compartment C, which can be freely pulled out from the leftovers compartment C. . With both drawers F and H drawn out, tableware D is placed on the rack E. At this time, the leftovers remaining on the tableware D are dropped from the rack E into the leftover container G. By pushing the lower drawer H into the leftovers compartment C, leftovers are stored in the leftovers compartment C before the tableware D is washed. In this way, the work of dumping leftovers into a separate leftover container or the like can be omitted. The tableware D on which leftover food has been dropped is washed by spraying the washing liquid pumped from the washing liquid pump K onto the washing liquid jetting body J.

0003

[Problems to be Solved by the Invention] In the conventional dishwasher shown in FIG.
is placed on rack E, and leftovers are dropped from rack E into leftovers container G. Therefore, each time washing is performed, it is necessary to pull out the upper and lower drawers F and H to drop the leftovers from the tableware D into the leftovers container G, resulting in poor work efficiency. In addition, the leftovers in the leftover container G enter the field of view of the worker,
There is also the problem that it gives a feeling of discomfort and that the bad odor from the leftover food container G emanates into the room, giving an unpleasant odor.

As a dishwasher capable of solving these problems, the present applicant previously proposed a dishwasher having a novel configuration in Japanese Patent Application No. 2-202748. The contents include a casing having a washing chamber for accommodating a dish rack, a washing liquid tank provided below the washing chamber and storing a washing liquid, a nozzle means for spraying the washing liquid in the washing liquid tank into the washing chamber, and the washing liquid. A leftover tank attached to the side of the tank is arranged between the washing chamber and the washing liquid tank, and the space between the washing chamber and the washing liquid tank can be opened and closed, and when the dish rack is closed, a guiding means for guiding leftovers falling from stored tableware to the leftovers tank, and a process for collecting leftovers in the leftovers tank by spraying water or a cleaning liquid while the guiding means is kept closed. This dishwashing machine is characterized in that the guiding means is opened to spray the washing liquid to wash the dishes.

[0005] With such a configuration, it is possible to carry out the waste collection process and washing of tableware continuously in a sealed washing room, thus improving work efficiency and eliminating the problem of discomfort and unpleasant odor. There are benefits that do not arise.

The present invention has been achieved by further improving the above-mentioned dishwasher in order to effectively utilize the washing space in the washing room. It is possible to achieve a compact shape while arranging the and the like in the casing, and furthermore, the cleaning efficiency is improved.

[0007]

[Means for Solving the Problems] The present invention provides a tableware rack 1
A cleaning chamber 2 accommodating 6 is provided above the cleaning chamber 2 in the casing 1, and a cleaning liquid tank 5 for storing cleaning liquid and a leftovers tank 6 for receiving leftovers are arranged in parallel below the cleaning chamber 2 in the casing 1, A nozzle means 19 is provided for injecting the cleaning liquid in the cleaning liquid tank 5 into the cleaning chamber 2, and the cleaning liquid tank 5 is closed;
guiding means 1 for guiding leftovers falling from the dishes 3 stored in the tableware rack 16 to the leftovers tank 6 when the tableware rack 16 is closed;
5, the nozzle means 1
9, the nozzle member 7 provided in the upper part of the cleaning chamber 2 is
The dish rack 16 is provided so that the center position of the liquid injection area matches the center position of the washing chamber 2, and the tableware rack 16 is formed in a size that can extend above the washing liquid tank 5 and the waste food waste tank 6. This dishwasher is characterized in that a small article rack 38 for storing small tableware is removably attached to a location corresponding to the upper part of the vegetable tank 6.

[0008]

[Operation] According to the present invention, the tableware 3 is stored in the tableware rack 16 and placed in the washing chamber 2 of the casing 1. A cleaning liquid tank 5 for storing cleaning liquid is provided below the cleaning chamber 2. The cleaning liquid in the cleaning liquid tank is injected into the cleaning chamber 2 by the nozzle means 19. A leftover vegetable tank 6 is provided on the side of the cleaning liquid tank 5. A guide means 15 is provided between the washing chamber 2 and the washing liquid tank 5 to close the washing liquid tank 5 and guide leftovers that fall from the tableware 3 to the leftovers tank 6 when the washing liquid tank 5 is closed. Guiding means 15
By spraying water or cleaning liquid with the door closed to collect the leftovers in the leftovers tank 6, and then opening the guiding means 15 and spraying the cleaning liquid to wash the dishes 3,
The waste collection process and washing of the tableware 3 can be performed continuously. Therefore, work efficiency is improved.

Furthermore, according to the present invention, the nozzle member 7 of the nozzle means 19 provided in the upper part of the cleaning chamber 2 is provided so that the center of the liquid jet area coincides with the center of the cleaning chamber 2. Tableware rack 16 widely spread within 2
The cleaning liquid can be sprayed over the entire area, and small items such as spoons and forks stored in the small item rack 38 located above the leftover food tank 6 can be effectively washed. Furthermore, when it is not necessary, the small item rack 38 can be removed for cleaning operation, and after that, for example, the draining container 6a in the leftover food tank 6 can be inserted or removed while the tableware rack 16 is stored in a predetermined location. It is also possible to do so.

[0010] It is a preferable configuration that the leftover food tank 6 is provided with a lid for closing the upper opening during the washing operation.

[0011]

1 and 2 show the structure of a dishwasher according to an embodiment of the present invention. FIG. 1 is a schematic cross-sectional view, and FIG. 2 is a partially cutaway and partially omitted perspective view.

In these figures, a cleaning chamber 2 is formed within an internal housing 1a constituting the inner wall of a casing 1. As shown in FIG. Inside the washing chamber 2, a tableware rack 16 on which tableware 3 is mounted can be accommodated. A door 4 is provided at the front opening of the cleaning chamber 2 so as to be openable and closable. With the door 4 open, the tableware rack 16 is loaded/unloaded, and with the door 4 closed, leftovers from the tableware 3 are collected and the tableware 3 is washed.

A cleaning liquid tank 5 is provided below the cleaning chamber 2, and a leftover tank 6 is provided on the side of the cleaning liquid tank 5. The water level in the cleaning liquid tank 5 is detected by an electrical resistance type cleaning liquid tank water level detection means 31. Inside the waste tank 6, there is a draining container 6a formed of a perforated plate such as punched metal.
is removably housed. This drainer container 6a receives leftovers and allows moisture to pass through. When the collected leftovers are collected in this way, the drainer container 6a is taken out from the leftovers tank 6, and the leftovers are disposed of in an external trash box or the like.

An overflow pipe 8 is provided in the cleaning liquid tank 5 below the cleaning chamber 2 to limit the water level of the cleaning liquid tank 5. Above the cleaning liquid tank 5 and below the cleaning chamber 2 is a lower nozzle hole 9.
A lower nozzle member 9 having 2 is provided. Above the cleaning chamber 2, an upper nozzle member 7 having an upper nozzle hole 91 is provided with a center support portion aligned with the center position of the cleaning chamber 2. An upper rinse water nozzle member 10 adjacent to the upper nozzle member 7
is provided. Below the washing chamber 2, adjacent to the lower nozzle member 9, a lower rinsing water nozzle member 11 is provided. These rinse water nozzle members 10 and 11 are connected to the nozzle hole 2.
has 0. The nozzle members 7, 9; 10, 11 are rotated by spraying the liquid toward the tableware 3 from the nozzle holes 91, 92, 20, and can evenly spray the liquid onto the tableware 3 placed on the tableware rack 16. . A lid 12 is provided at the upper opening of the leftover food tank 6. When the lid 12 is closed, the liquid sprayed from the upper and lower nozzle members 7, 9; 10, 11 can be prevented from entering the leftovers tank 6.

Below the tableware rack 16, the nozzle member 9,
A guiding means 15 including a plurality of dampers 14 that can be angularly displaced about the rotating shaft 13 is provided above the damper 11 . The damper 14 can open and close the gap between the tableware rack 3a and the lower nozzle members 9 and 11. The lid 12 of the leftover food tank 6 is opened and closed reversibly in conjunction with the opening and closing of the damper 14.
4 closes, and closes when damper 14 opens. When the damper 14 closes, the damper 14 is removed from the tableware 3.
The leftover food falling upward is guided on the damper 14 and collected in the draining container 6a in the leftover food tank 6. After such residual food collection processing, the damper 14 is opened and the tableware 3 is washed by the upper and lower nozzle members 7 and 9 with the lid 12 closed.

Although the pre-shower, which is a process for collecting leftover food, can be performed by spraying the cleaning liquid from the upper nozzle member 7 provided above the washing chamber 2, it is possible to remove the leftover food by providing a separate pre-shower means. Water or cleaning liquid can be sprayed onto the tableware 3 under conditions particularly suitable for the collection process, and cleaning efficiency can also be improved.

When the washing of the tableware 3 is completed, rinsing water is sprayed from the upper and lower rinsing water nozzle members 10 and 11. The rinsing water washes away the cleaning liquid adhering to tableware 3.
Clean tableware 3. Such rinsing water is stored in a cleaning liquid tank 5, and its water level is limited by an overflow pipe 8. Liquid exceeding this water level is drained via an external drain pipe 17 connected to the overflow pipe 8. A drain pipe 18 from the leftovers tank 6 is also connected to the external drain pipe 17.
The water that has passed through the drainer container 6a is drained.

The cleaning liquid in the cleaning liquid tank 5 is supplied to the cleaning pump MP.
1 through the circulation pipe 9a to the upper and lower nozzle members 7, 9, which are the nozzle means 19, and the nozzle holes 91, 9.
It is injected from 2. Inner housing 1 within casing 1
A rinse tank 30 is provided outside a. Rinse tank 3
The rinsing water from 0 is supplied to the upper and lower rinsing water nozzle members 10 via the rinsing water pipe 10a by the rinsing pump MP2.
, 11. A solenoid valve 23 is provided in the rinse tank 30.
Rinse water is supplied through a water supply pipe 22 provided with
The water level is controlled by an electrical resistance type rinse tank water level detection means 32. The rinsing water in the rinsing tank 30 is heated to about 80 to 85° C. by the rinsing water heater 36. This temperature is detected by the rinse tank temperature detection means 35. Water can also be directly supplied into the cleaning chamber 2 via a water supply pipe 24 provided with a solenoid valve 25 . The temperature of the cleaning liquid in the cleaning liquid tank 5 is detected by the cleaning liquid tank temperature detection means 33, and the temperature of the cleaning liquid in the cleaning liquid tank 5 is detected by the cleaning liquid heater 34.
It is kept at a temperature of ~65°C.

A motor MD capable of forward and reverse rotation is provided below the cleaning chamber 2. A pulley 27 is fixed to the shaft of the motor MD, and a belt 26 is wound around the pulley 27. The belt 26 is wound around a pulley 29 fixed to one of the rotation shafts 13 of the damper 14 and a pulley 28 fixed to the rotation shaft 21 of the lid 12. In this way, according to the rotational drive of the motor MD, the damper 14 and the lid 12 are reversibly interlocked to perform opening and closing operations.

FIG. 3 is a schematic block diagram showing the electrical configuration of a dishwasher according to an embodiment of the present invention, and FIG. 4 is a flowchart for explaining the operation of the control circuit 39 shown in FIG. 3.

The control of each section described above is performed by a control circuit 39. The control circuit 39 includes a microcomputer, a memory, etc., and controls each part according to a preset program. For time control, timer 4
0 is set.

When the tableware 3 is placed on the tableware rack 16 and stored in the washing chamber 2 and the door 4 is closed, the door switch 37 is activated. As a result, the operation starts from step s1. At this time, the motor MD is driven and the damper 14
It is assumed that the lid 12 is closed and the lid 12 is open.

Next, in step s2, the cleaning pump MP1 is turned to O.
N, and the cleaning liquid is sprayed from the upper and lower nozzle members 7 and 9. Since the damper 14 is closed, only the cleaning liquid from the upper nozzle member 7 is sprayed onto the tableware 3. The cleaning liquid from the lower nozzle member 9 returns to the cleaning liquid tank 5. The leftover food adhering to the tableware 3 is washed away by the washing liquid, guided over the damper 14, and collected in the draining container 6a in the leftover food tank 6. Such leftover food collection processing is continued for t1 seconds in step s3. This pre-shower time t1 is, for example, 3 to 4 seconds. When this time t1 has elapsed, the cleaning pump P1 is turned off in step s4.
F is given. In this way, the pre-shower ends. The cleaning liquid used to wash the leftovers passes through the colander 6a,
It is discharged via the drain pipe 18 to the external drain pipe 17 .

Next, in step s5, the motor MD is reversed, the damper 14 is opened, and the lid 12 is closed. Next, in step s6, the washing pump MP1 is turned on, and the dishes 3 are washed by spraying the washing liquid from the upper and lower nozzle members 7 and 9. This cleaning liquid is stored in the cleaning liquid tank 5 and is used in circulation. In step s7, t2
It is determined whether the cleaning time of seconds has elapsed. This cleaning time t2 is, for example, 90 seconds. This cleaning time t2
has passed, in step s8 the cleaning pump MP1
is turned off. Next, in step s9, the process waits for t3 seconds. This time t3 is, for example, 3 seconds, and is provided to allow the cleaning liquid to drip sufficiently from the tableware 3. In this way, the dishes 3 are washed.

Next, in step s10, the rinse pump MP2 is turned on, and the upper and lower rinse water nozzle members 10,
Rinsing water is sprayed onto the tableware 3 from 11. This rinsing is performed for t4 seconds in step s11. This time t4 is, for example, 17 seconds. Next step s12
At this point, the rinse pump MP2 is turned off. When rinsing is completed, the motor MD is driven in step s13, the damper 14 is closed, and the lid 12 is opened. Rinsing is performed in this manner, and the clean tableware 3 can be taken out by opening the door 4. Furthermore, the tableware 3 to be washed next is prepared, and the operations from step s2 onwards are performed continuously.

FIG. 5 is an exploded perspective view of a dish rack 16 used in a dishwasher according to an embodiment of the present invention. The tableware rack 16 is made of steel wire or stainless steel wire, the surface of which is coated with a resin such as nylon to prevent rust, and is made by bending both ends, intersecting each other vertically and horizontally, and fixing them to each other by welding or the like. Formed into a shallow-bottomed mesh cage.

The tableware rack 16 is formed in a rectangular shape large enough to span an effective area on the horizontal plane in the washing chamber 2 and can be taken in and out from the door 4, as shown in FIG.
At the left end side and corresponding to the upper position of the leftovers tank 6, there is, for example, a longitudinally elongated shape that can be dropped into the peripheral frame from above and engaged with the peripheral frame by the front and rear hook parts 41. A rack 38 for small items is provided.

This rack 38 for small items preferably has a finer mesh than the tableware rack 16 on the main body side so that small tableware such as teaspoons, forks, chopsticks, and sake cups can be stably stored. .

When the dish rack 16 configured as described above is housed in a predetermined location in the washing chamber 2, the main body side is connected to the washing liquid tank 5.
A rack 38 for small items is located above the scrap tank 6, and there is no nozzle member below the rack 38 for small items, so that the liquid from the upper nozzle members 7 and 10 is sprayed. Therefore, there is no risk of small dishes being blown out of the rack, and the cleaning effect is sufficiently exerted only by the liquid coming from above.

Note that if the small tableware does not require washing or if the leftover food tank 6 is to be cleaned, the small tableware rack 38
It is very convenient because it can be removed and attached depending on the usage.

[0031]

Effects of the Invention As explained above, according to the present invention, the cleaning liquid tank 5 and the leftovers tank 6 are installed in the cleaning chamber 2, and the leftovers collection process and cleaning can be carried out in a series while keeping the cleaning chamber 2 in a closed state. This can be done in an automatic cleaning process, improving work efficiency and eliminating the problem of discomfort and unpleasant odors.

Further, according to the present invention, the tableware rack 16 is made large enough to be placed above both the tanks 5 and 6, and a removable rack 38 for small items is attached above the leftover food tank 6. Since it has a structure that allows cleaning space to be used effectively to the maximum extent possible, cleaning efficiency can be increased even with a compact configuration.

Furthermore, according to the present invention, the nozzle member 7 of the nozzle means 19 provided in the upper part of the cleaning chamber 2 is arranged so that the center of the liquid jet area is aligned with the center of the cleaning chamber 2. It is possible to uniformly spray the cleaning liquid to every corner of the inside, and the small tableware stored in the small tableware rack 38 can also be reliably washed.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a schematic configuration of a dishwasher according to an embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view of the dishwasher shown in FIG. 1;

FIG. 3 is a block diagram showing a schematic electrical configuration of the embodiment shown in FIG. 1;

FIG. 4 is a flowchart for explaining the operation of the dishwasher of the embodiment shown in FIG. 1;

5 is an exploded perspective view of the dish rack in the dishwasher of the embodiment shown in FIG. 1; FIG.

FIG. 6 is a sectional view for explaining a conventional dishwasher.

[Explanation of symbols]

1 Casing 2　Cleaning room 3 Tableware 5 Cleaning liquid tank 6 Leftover tank 7 Upper nozzle member 9 Lower nozzle member 15 Guidance means 16 Tableware rack 19 Nozzle means 38 Rack for small items

Claims (1)

[Claims] 1. A washing chamber 2 for accommodating a tableware rack 16 is provided in the upper part of the casing 1, and a washing liquid tank 5 for storing a washing liquid and a leftovers tank 6 for receiving leftover food are provided in the washing chamber 2 in the casing 1. A nozzle means 19 is provided below and injects the cleaning liquid in the cleaning liquid tank 5 into the washing chamber 2, and when the cleaning liquid tank 5 is closed, the dishes 3 stored in the tableware rack 16 fall. This dishwasher is provided with a guiding means 15 for guiding the leftover food to the leftover food tank 6, and the nozzle member 7 provided in the upper part of the washing chamber 2 of the nozzle means 19 is located at the center of the liquid injection area. The dish rack 16 is arranged so as to match the center position of the washing chamber 2, and is formed in a size that can extend above the washing liquid tank 5 and the leftover food tank 6, and above the leftover food tank 6. In the area corresponding to , there is a rack 3 for small items that can store small tableware.
8 is removably attached to the dishwasher.