JPH07250798A - Dish washing device - Google Patents

Abstract

PURPOSE:To provide a dish washing device in which the inclusion of a granular abrasive to a residual solid matter and the adhesion of the abrasive to a dish at washing end are prevented, and cleaning effect is enhanced by separating and recovering the granular abrasive from a washing tank according to washing process. CONSTITUTION:A dish washing device has a washing tank 2 having a spiral water flow generating means 8 and a dish supporting means 7, and an abrasive chamber 4 communicating with the washing tank 2 through communicating holes 41, 42 provided in two upper and lower positions. A main water pipe P1 and a main drain pipe P3 are arranged in the washing tank 2, and a sub- water pipe P2 and a sub-drain pipe P4 are arranged in the abrasive chamber 4. The abrasive chamber 4 has an abrasive basket 46 provided in such a manner as to be attachable and detachable, and a shutter 53 for opening and closing the lower communicating hole. The shutter 53 is integrated or interlocked with a float supported within the abrasive chamber 4 in such a manner as to be capable of rising and lowering, and it is opened and closed according to the level in the abrasive chamber 4 by the buoyancy acting on the float.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a dishwasher.

[0002]

2. Description of the Related Art Conventionally, a dishwashing apparatus is provided with dishware supporting means such as a basket-like case which is detachably fixed in a washing tank, and swirling water flow generating means such as stirring blades, and the dishware supporting means is equipped with dishware. With the above set, the washing water in the washing tank was stirred to generate a swirling water flow, and the dishes were washed with the water flow. Then, in order to enhance the cleaning effect, a soft granular abrasive is mixed in the cleaning water so that the granular abrasive comes into contact with the tableware as the swirling water flow flows.

In such a dishwashing apparatus, a strainer made of punched metal, wire mesh or the like is provided above the drainage port at the bottom of the washing tank, and the granular abrasives are separated and left at the time of drainage to enable repeated use. However, the uneaten solids attached to the tableware are mixed into the granular abrasive and remain,
There was a problem that the polishing material adhered to the dishes at the end of washing.

[0004]

SUMMARY OF THE INVENTION In view of such a point of the conventional dishwashing apparatus, the present invention provides a washing process according to the following steps.
A dishwasher that separates and collects the granular abrasive from the washing tank to prevent the uneaten solids from mixing into the granular abrasive and to prevent the abrasive from adhering to the dishes at the end of washing, and enhancing the washing effect It is intended to provide.

[0005]

A cleaning tank provided with a swirling water flow generating means and a tableware supporting means, and an abrasive material chamber communicating with the cleaning tank at two upper and lower communication ports, the cleaning tank , A main water supply pipe and a main drain pipe, and a sub water supply pipe and a sub drain pipe in the abrasive material chamber, respectively. The mouth was provided with a shutter for opening and closing the lower communication port.

Further, the shutter is integral with or interlocked with a float that is liftably supported in the abrasive chamber, and buoyancy acting on the float opens and closes according to the water level in the abrasive chamber. I decided to do it.

[0007]

[Function] When water is supplied from the main water supply pipe into the cleaning tank with the main drain pipe and the sub drain pipe closed in the cleaning tank in which the dishes to be cleaned are set, the water flowing into the abrasive chamber from the lower communication port The water level in the polishing material chamber rises, and at the same time, the shutter of the lower communication port closes. After this, when the water level in the washing tank reaches a predetermined high level, a swirling water flow is generated and pre-washing is performed without an abrasive material.If the main drain pipe and sub drain pipe are opened and drained, they will adhere to the dishes. The solid and liquid substances that had been removed are removed.

Next, when water is supplied from the sub water supply pipe into the abrasive chamber with each drain pipe closed, the shutter at the lower communication port closes immediately as the water level in the abrasive chamber rises, but the water level further rises. The cleaning water and the abrasive flow into the cleaning tank through the upper communication port. Then, after the water level in the washing tank reaches a predetermined high water level, the water supply is stopped, a swirling water flow is generated, the dishes are washed with the water flow and the abrasive, and the drain pipes are opened for draining. At this time, the abrasive remains on the bottom of the cleaning tank and on the strainer at the drain port.

Next, when only the main drain pipe is closed and the sub drain pipe is opened, water is supplied from the main water pipe into the cleaning tank, and after a predetermined low water level is reached, a swirling water flow is generated, and the abrasive material Is introduced into the abrasive chamber through the lower communication port together with water by the buoyancy and centrifugal force acting on the abrasive, and is collected in the abrasive basket.
At this time, the abrasive is washed with the water stream. After this,
When the sub drain pipe is closed, the water level in the abrasive chamber rises, and at the same time, the shutter at the lower communication port closes, and when the water level in the cleaning tank reaches a predetermined high water level, rinsing is performed by overflowing each drain pipe. If it is opened and drained, the washing process is completed.

[0010]

Embodiments will be described with reference to the drawings.

1 and 2 show a dishwasher 1 according to an embodiment of the present invention. In the drawing, a dishwashing apparatus 1 is provided with a cylindrical cleaning tank 2 and two substantially semi-cylindrical abrasive chambers 4 and 4 on an outer wall 3 of the cleaning tank 2.

A drive device 7 having a motor 6 as a power source is provided at the center of the bottom portion 5 of the cleaning tank 2, and a stirring blade 8 is fixed to the output shaft of the drive device 7 as a spiral generating means. As shown in FIG. 2, the stirring blade 8 has eight fins 1 on the base disk 9.
0 is formed, and two circular holes 1 are formed in the base disk 9.
1 and 11 are provided in the circular holes 11 and 11, respectively.
2, 12 are fixed in a removable state.

The stirring blade 8 of the bottom portion 5 of the cleaning tank 2
By rotating the
A drain port 13 is opened, and a strainer 14 made of punch metal, wire mesh, or the like is detachably fitted to the drain port 13. Further, a drainage groove 15 is formed so as to cover the lower side of the drainage port 13, and the main drainage pipe P is provided on the bottom surface of the drainage groove 15.
3 is piped.

On the upper side of the stirring blade 8 of the washing tank 2, a basket-shaped case 17 is detachably fixed as a tableware supporting means. As shown in FIG. 5, the cage-shaped case 17 is an annular wire rod 18, 19, 2 arranged concentrically on the bottom of the case.
The annular wire rods 22, 23, 24 arranged concentrically with the annular wire rods 18, 19, 20 above the conical portion formed by 0 and 8 radially arranged wire rods 21.
Is a columnar wire rod 25, 26, 2 erected on the conical portion.
By supporting with 7 and 28, it has a shape in which three layers of deformed cylinders are coaxially laminated. Then, the tableware is arranged concentrically in the basket-shaped case 17 by inserting the tableware into the gaps of the layers with the serving surface inside. Incidentally, the cotton material 21 has a bent portion 21b bent downward in a V shape at the portion contacting the tableware as shown in FIG. 5 so as to prevent the tableware from falling and to be surely supported. ing. The cage-shaped case 17 has a socket 2 in which leg portions 21a formed by bending the tips of the eight radial wires 21 downward are fixed to the inner surface of the cleaning tank 2.
It is fixed by inserting into 9.

Near the upper end of the side wall 3 of the cleaning tank 2, an overflow section 30 connected to an overflow pipe P5 and a water supply section 31 connected to a main water supply pipe P1 are provided. Three
Reference numeral 2 is a lid of the cleaning tank 2.

Next, the polishing material chambers 4 and 4 will be described.
Since each of the polishing material chambers 4 and 4 has the same structure and the same operation timing, only one of them will be described below.

The polishing material chamber 4 communicates with the inside of the cleaning tank 2 through two upper and lower communication ports 41, 42 provided on the side wall 3 of the cleaning tank 2, and a water supply nozzle 44 is opened at the center of the bottom portion 43. A sub water supply pipe P2 is connected to the other end of the water supply nozzle 44. A drain port 45 is opened near the water supply nozzle 44, and a sub drain pipe P4 is connected to the drain port 45.

An abrasive basket 46 is provided inside the abrasive chamber 4.
Is installed so that it can be inserted and removed. As shown in FIG. 3, the abrasive basket 46 has substantially the same shape as the abrasive chamber 4 and has a substantially semi-cylindrical shape with a slightly smaller diameter, and has a conical funnel shape at the bottom and an opening 47 at the center of the bottom. A strainer 47a is provided in the opening 47. The semi-cylindrical peripheral side wall of the abrasive basket 46 and the funnel-shaped portion at the bottom are both formed of punch metal having a large number of through holes 48a, 48b smaller than the particle size of the granular abrasive W, and the side wall Plane part 49
Is formed of a flat plate material having openings 51 and 52 which overlap the upper and lower communication ports 41 and 42 when the abrasive basket 46 is inserted into the abrasive chamber 4.

The upper opening 51 of the abrasive basket 46
When the polishing basket 46 is inserted into the polishing material chamber 4, a packing 50 that is in close contact with the periphery of the upper communication port 41 of the cleaning tank side wall 3 is fixed to the periphery of the. A shutter 53 is supported on the lower half of the flat portion 49 of the abrasive basket 46 so as to be able to move up and down as follows.

That is, the shutter 53 includes a pair of guide rail members 55 and 55, in which the guide frames 54 and 54 provided on both sides are fixed to both sides of the plane portion 49 of the abrasive basket 46 shown in FIGS. 3 and 4. By engaging with the guide grooves 56 facing each other, the member 57 is slidably supported in the vertical direction, and is prevented from falling down by the member 57 provided at the lower end of the flat surface portion 49 of the abrasive basket 46. The shutter 53 is
A through-hole 58 having the same shape as the opening 52 is formed at a position where the lower end is in contact with the member 57 and overlaps with the lower opening 52 of the abrasive basket 46, and the lower side of the through-hole 58 is formed. The shielding member 60 is fixed adjacent to. The shielding member 60 and the front surface 59 around the through-hole 58 form the same curved surface as the cleaning tank side wall 3 and project from other portions of the front surface of the shutter.

The shutter 53 having such an outer shape
Is made of a lightweight material such as Styrofoam as a main material, or is made of a resin material or the like so as to be hollow, so that the upper edge 61 of the shielding member 60 is configured as a float that floats on water as a water line.

A rib 62 is formed in the center of the side surface of the abrasive basket 46 supporting the shutter 53 in parallel with the length direction of the abrasive basket 46, and the abrasive basket 46 is inserted into the abrasive chamber 4. Then, the abrasive basket 46 is supported at a predetermined position in the abrasive chamber 4 by the ribs 62 and the guide rail members 55, 55. Abrasive basket 4 in this state
The lower end opening 47 of 6 fits into the water supply nozzle 44, the packing 50 is in close contact with the cleaning tank side wall 3, and the peripheral front surface 59 of the through hole 58 of the shutter 53 and the shielding member 60 are the side walls. It comes into contact with 3 in an easily slidable state. Incidentally, 63 is a lid of the polishing material chamber 4.

The main water supply pipe P1 and the sub water supply pipe P2 are provided with solenoid valves SV1 and SV2, a main drain pipe P3 and a sub drain pipe P4.
Solenoid valves SV3 and SV4 are provided respectively, and opening / closing of these four solenoid valves SV1 to SV4 and rotation of the stirring blade 8 (motor 6) are sequence-controlled by a control device (not shown) connected to them. .

Next, an example of the cleaning process will be described with reference to the timing chart shown in FIG. The material of the abrasive W used in the following cleaning process is not particularly limited, but a soft granular abrasive having a specific gravity of about 1 is suitable, for example, a lump having a particle diameter of 5 to 20 mm or It is possible to use a sheet-like urethane foam rubber, or a cotton-like short fiber such as nylon or polyester partially bonded and broken or cut into an indeterminate shape. An appropriate amount of the abrasive W is put in the abrasive basket 46 in the abrasive chamber 4.

Then, the basket-shaped case 17 in which the dishes to be cleaned are set is fixed in the cleaning tank 2, and the electromagnetic valve SV1 is opened in the cleaning tank 4 with the electromagnetic valves SV3 and SV4 closed. When water is supplied from P1, after the water level in the cleaning tank 2 reaches the low water level L2, the water level in the abrasive chamber 4 rises due to the water flowing into the abrasive chamber 4 through the lower communication port 42, and the shutter is also released. 53 rises, the lower communication port 42 is closed by the shielding member 60, and the abrasive W is prevented from flowing out of the abrasive chamber 4. After that, when the water level in the cleaning tank 2 reaches a predetermined high water level L1, the motor 6 is operated to rotate the stirring blade 8 to generate a swirling water flow in the cleaning tank 2 and to overflow without an abrasive. Pre-wash. After prewashing for a predetermined time, the motor 6 is stopped and the main drain pipe P3
When the electromagnetic valves SV3 and SV4 of the sub drain pipe P4 are opened and drained, the solid and liquid substances attached to the dishes are removed.

Next, with the solenoid valves SV3 and SV4 closed, the solenoid valve SV2 is opened to supply the water supply nozzle 44 of the sub water supply pipe P2.
When water is supplied into the polishing material chamber 4, the shutter 53 rises as soon as the water level in the polishing material chamber 4 rises, and immediately the lower communication port 4
Although 2 is closed, the water level in the polishing material chamber 4 further rises, and the cleaning water and the polishing material W flow into the cleaning tank 2 through the upper communication port 41. Then, the water level in the cleaning tank 2 rises and the predetermined high water level L
When it reaches 1, the electromagnetic valve SV2 is closed to stop the water supply, and at the same time, the motor 6 is operated to rotate the stirring blades 8 and
A swirling water flow is generated inside, and the tableware is washed for a predetermined time by the water flow and the abrasive W. After that, the motor 6 is stopped and the electromagnetic valves SV3 and SV4 of the drainage pipes P3 and P4 are opened to drain the water. At this time, the polishing material W is the bottom of the cleaning tank 2,
It remains on the strainer 14 at the bottom.

Subsequently, only the solenoid valve SV3 of the main drain pipe P3 is closed, the solenoid valve SV4 of the sub drain pipe P4 is opened, and the solenoid valve SV1 is opened to supply water into the cleaning tank 2 from the main drain pipe P1. After the water level in the cleaning tank 2 reaches a predetermined low water level L2, if the stirring blade 8 is rotated to generate a swirling water flow in the cleaning tank 2, the abrasive W will have centrifugal force and centrifugal force acting on the abrasive. Along with the water overflowing from the lower communication port 42 due to the force, it flows into the abrasive chamber 4 and is collected in the abrasive basket 46. At this time, the abrasive W is washed with the water stream. After that, if the electromagnetic valve SV2 of the sub drain pipe P2 is closed, the shutter 53 rises as the water level in the polishing material chamber 4 rises, the lower communication port 42 closes, and the polishing material W flows out into the cleaning tank 2. When the water level in the cleaning tank 2 reaches a predetermined high water level L1 in the blocked state, the stirring blade 8 is rotated, and rinsing is performed for a predetermined time while overflowing from the overflow section 30. After this, the motor 6 is stopped and the solenoid valves S of the drain pipes P3 and P4 are
If V3 and SV4 are opened and drained, the cleaning process is completed.

In the above cleaning process, the abrasive W is in the abrasive basket 46 of the abrasive chamber 4 during the pre-cleaning process, and after the solid substances such as leftover foods and the like adhering to the dishes are removed in the pre-cleaning process. Since the solid matter does not flow into the cleaning tank 2, the solid matter is not mixed with the abrasive material W. When the abrasive material W is washed by the abrasive material W, is collected in the abrasive material basket 46, and is washed with water overflowing from the lower communication port 42, the abrasive material W is repeatedly used. It is always kept clean even in. If the abrasive W deteriorates after repeated use, the lid 63 is opened, and the abrasive W is taken out of the abrasive chamber 4 together with the abrasive basket 46 and replaced with a new abrasive W.

In the above embodiment, the shutter 5
Although 3 is configured as a float and moves up and down according to the water level in the polishing material chamber 4 to open and close, the shutter and the float are separate bodies, and a link mechanism or the like is interposed between them to move the float and the shutter. The movement of may be mechanically linked. Further, a power source such as a solenoid may be separately provided in the shutter, and the shutter may be opened and closed at the same timing. Further, it goes without saying that the pre-washing step may be omitted if coarse leftover food etc. has been removed before the dish washer 1 is set.

[0030]

As described above, the dishwashing apparatus of the present invention has a washing tank equipped with a swirling water flow generating means and a tableware supporting means, and an abrasive chamber which communicates with the washing tank at two upper and lower communication ports. And a main water supply pipe and a main drain pipe in the cleaning tank, and a sub water supply pipe and a sub drain pipe in the abrasive chamber, respectively,
An abrasive basket is provided in the abrasive chamber so that it can be inserted and removed, and a shutter for opening and closing the lower communication port is provided at the lower communication port. Separation and recovery of solid foods such as leftover food can be prevented from adhering to the polishing material at the end of cleaning, and the polishing material itself can also be cleaned after each cleaning. As a result, the cleaning effect can be improved, and the deteriorated abrasive material can be easily removed from the abrasive material chamber together with the abrasive material basket and replaced with a new abrasive material.

Further, the shutter is integral with or interlocked with a float that is supported in the abrasive chamber so as to be able to move up and down, and opens and closes according to the water level in the abrasive chamber by the buoyancy acting on the float. Therefore, proper timing can be obtained without using a special power source for opening and closing the shutter, which can contribute to simplification of the structure of the device and energy saving.

[Brief description of drawings]

FIG. 1 is a side sectional view of an essential part showing a dishwasher according to an embodiment of the present invention.

FIG. 2 is a plan view of the essential parts showing the dishwasher of the embodiment of the present invention.

FIG. 3 is a perspective view showing an abrasive basket and a shutter.

FIG. 4 is a plan sectional view showing an abrasive chamber.

FIG. 5 is a perspective view showing a cage case.

FIG. 6 is a timing chart showing a cleaning process in the dishwasher of the embodiment of the present invention.

[Explanation of symbols]

 1 Dishwasher 2 Cleaning Tank 4 Abrasive Room 6 Motor 8 Stirring Blade 13 Drain Port 14 Strainer 17 Basket Case 30 Overflow Part 31 Water Supply Section 41 Upper Communication Port 42 Lower Communication Port 44 Water Supply Nozzle 45 Drain Port 46 Abrasive Basket 53 Shutter 54 Guide frame 55 Guide rail member 62 Rib P1 Main water supply pipe P2 Sub water supply pipe P3 Main drain pipe P4 Sub drain pipe SV1, SV2, SV3, SV4 Solenoid valve W Abrasive material L1 High water level L2 Low water level

Claims (2)

[Claims] 1. A washing tank provided with a swirling water flow generating means and a tableware supporting means, and an abrasive chamber which communicates with the washing tank at two upper and lower communicating ports, and the washing tank is provided with a main water supply. The pipe and the main drain pipe, the auxiliary water supply pipe and the auxiliary drain pipe in the abrasive material chamber, respectively, the abrasive material basket is provided in the abrasive material chamber in a removable manner, the lower communication port, A dishwasher comprising a shutter for opening and closing the lower communication port. 2. The shutter, which is integral with or interlocked with a float that is vertically movable in the abrasive chamber, and opens and closes according to the water level in the abrasive chamber by buoyancy acting on the float. The dishwashing apparatus according to claim 1, wherein