JPS5854050Y2 - dishwasher - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dishwasher, and particularly relates to a structure for processing residues such as rice grains and vegetable scraps washed from dishes.

Conventionally, in this type of dishwasher, as shown in FIG. 1, for example, a fine-mesh filter 2 is installed at the bottom of an inner tank 1 to prevent washing water jetted from a jet nozzle 3 from adhering to tableware 4. When the residue is washed away and returned to the water storage chamber 5, the residue is collected by the filter 2, and the residue is deposited on the filter 2. However, in this method, the filter 2 is collected even during the rinsing process after cleaning. Since the residue is still accumulated on the top and comes into contact with the rinsing water, the fine residue passes through the filter 2 and is sucked into the washing pump together with the rinsing water, and is ejected from the injection nozzle 3 and attached again to the tableware 4. There is a risk that the cleaning and rinsing effect will not be obtained sufficiently.

Conventionally, as shown in Fig. 2, a filter lid 6 with a coarse mesh is provided on a part of the filter 2 to collect only large residues, and fine residues are pumped together with wastewater into a drainage pump when draining water after the cleaning process. There was a device that was configured to discharge externally through the drain pump 7 to prevent fine residue from adhering to the tableware 4 during rinsing.
And there was a risk that it would accumulate in the drain pipe 8 and cause poor drainage.

The present invention has been devised in view of these points, and an embodiment of the present invention shown in FIG. 3 will be described in detail below.

11 is an outer tank; 12 is an inner tank that houses a dish basket 13 and a spray nozzle 14 and has a water supply pipe 15 connected to the top; 16 is a water storage chamber formed at the bottom of the inner tank 12; and 17 is a water storage chamber 1 on the suction side.
At the bottom of 6, there is a cleaning pump whose discharge side is connected to the injection nozzle 14, 18 is a residue storage chamber formed at the bottom of the inner tank 12, and 19 is a mesh installed inside the residue storage chamber 18 so that it can be taken out through the opening on the top surface. 20 is a cover that closes the upper opening of the residue storage chamber 18 in a watertight state, 21 is a connecting pipe that communicates the water storage chamber 16 and the residue storage chamber 18 via a check valve 22, and 23 is a The suction side is branched and one is connected to the bottom of the residue storage chamber 18 and the other is connected to the water storage chamber 16 via the check valve 24.
Drain pumps connected to the bottom of each, 25 is the drain pump 2
This is an external drain pipe connected to the discharge side of No. 3.

A fine mesh filter 26 is removably disposed at the bottom of the inner tank 12, and covers the upper part of the water storage chamber 16 and the residue storage chamber 18, and bulges out a part corresponding to the water storage chamber 16 downward to prevent the expansion. An outlet 27 is formed in the outlet portion to connect with the connecting pipe 21.

This outlet 27 guides the residue collected by the filter 26 to the residue storage chamber 18 side through the connecting pipe 21, and both the connecting pipe 21 and the connecting pipe 21 are set to have a relatively large diameter.

Next, the operation of the dishwasher will be explained.

Now, with the tableware 28 stored in the tableware capacity 13, the inner tank 1
2, and the cleaning water is stored in the water storage chamber 16, and the cleaning water is pumped to the cleaning pump 1.
7 starts operation, the cleaning water in the water storage chamber 16 is sucked by the cleaning pump 17 and fed to the injection nozzle 14,
The water is ejected from the nozzle 14 and hits the tableware 28, thereby washing away residues such as rice grains and vegetable scraps adhering to the tableware 28.

Then, the washing water that has contributed to washing the tableware 28 falls onto the filter 26 together with the residue, passes through the filter 26, enters the water storage chamber 16 again, and repeats the above-mentioned operation thereafter.

Of course, the fallen residue is collected by the filter 26,
It remains on the filter 26.

Then, when the cleaning process is completed by stopping the cleaning pump 17 and the draining process is started by operating the drain pump 23,
A part of the cleaning water in the water storage chamber 16, that is, the dirty water after cleaning, passes through the check valve 24, and the rest goes through the check valve 22 and the residue storage chamber 18.
The sewage is sucked into the drainage pump 23 through the drain pipe 25 and discharged to the outside through the external drain pipe 25. At this time, the sewage flowing into the residue storage chamber 18, along with the residue accumulated on the filter 26, is discharged through the outlet port. 27, the residue enters the residue storage chamber 18 through the check valve 22, and as a result, the residue has a residue storage capacity of 1.
9 is collected and contained, and only the waste water is discharged to the outside.

In this manner, the residue collected by the filter 26 during cleaning is stored in the residue storage capacity 19 using the waste water during drainage.

Next, after the drainage process is completed, water is supplied to the cleaning pump 17.
The operation will move to the rinsing process, but at this time, since there is a check valve 22, 24 between the suction side of the cleaning pump 17 and the residue storage chamber 18, the residue in the residue storage capacity 19 will be transferred to the cleaning pump. 17, and mixing with the rinse water is prevented.

Therefore, the tableware 28 is effectively rinsed with clean rinsing water, and the cleaning effect is further enhanced.

Therefore, the collected residue is disposed of after a series of operations are completed.
Remove the filter 26 and cover 20 one after another to reduce the residue storage capacity to 1.
9 from the inner tank 12 side and carried out to the outside.

In addition, although the filter 26 in the above-mentioned embodiment covers the upper part of the water storage chamber 16 and the residue storage chamber 18, the filter 26
may be provided so as to cover at least the connection port on the suction side of the cleaning pump 17 and the connection port on the check valve 24 side.

As described above, according to the present invention, the residue collected by the filter during cleaning can be collected and stored in the residue storage capacity using drainage water, and the residue once stored in the residue storage basket cannot flow back. This eliminates the possibility of contamination with the rinsing water during the next rinsing process, which prevents residue from re-adhering to tableware during rinsing, allowing the cleaning and rinsing effects to be fully demonstrated. This is an extremely practical solution that eliminates the risk of waste drainage caused by accumulation of residue in the drain pipe, and eliminates all the drawbacks of the previous method.

[Brief explanation of the drawing]

1 and 2 are schematic cross-sectional configuration diagrams showing a conventional dishwasher, and FIG. 3 is a schematic cross-sectional configuration diagram showing the dishwasher of the present invention. 12: Inner tank, 13: Tableware function, 14: Spray nozzle, 16:
Water storage chamber, 17: Washing pump, 18: Residue storage chamber, 19:
Residue storage capacity, 22: Check valve, 23: Drain pump, 26:
Filter, 27: outlet.

Claims (1)

[Scope of utility model registration request] An inner tank equipped with a dish basket and a spray nozzle, a water storage chamber formed at the bottom of the inner tank, a washing pump that sucks water in the water storage chamber and supplies it to the spray nozzle, and a check valve connected to the water storage chamber. A residue storage chamber that communicates with the storage chamber, a residue storage basket that is removably installed in the storage chamber and that collects residue, and a residue storage basket that covers at least the suction side of the cleaning pump and stores the collected residue through a check valve. A dishwasher characterized by being equipped with a filter that guides the wastewater to the chamber side, and a drain pump that sucks in waste water through a residue storage chamber and discharges it to the outside.