JPH0453520A - Dish washer - Google Patents

Abstract

PURPOSE:To save detergent and hot water by blocking a drain valve during the washing and rinsing operation, repeating the washing and rinsing operation once or more, performing draining through an overflow pipe during the above operation, blocking the drain valve during the washing operation after the above operation, and opening the drain valve during the rinsing operation to drain off water. CONSTITUTION:A washing tank 11 is disposed below an opening portion of a box 1, and a dust removal filter 12 is disposed on the floor surface thereof to be communicated with a drain pipe 14 through a drain valve 13. An overflow pipe 14A is communicated with the washing tank 11 and the drain pipe 14, and a washing pump 15 is communicated with the bottom portion of the washing tank 11 to deliver washing solution. During the washing and rinsing operation, the drain valve 13 is blocked, the washing and rinsing operation is repeated once or more, water is allowed to drain off through the overflow pipe 14A during the above operation, and after the operation, the drain valve 13 is blocked during the washing operation and during the rinsing operation, the drain valve 13 is opened to drain off the water. As the drain valve is blocked during the washing and rinsing operation to drain off water through the overflow pipe, it is enough to supply detergent only for the diluted quantity with a rinsing solution.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a device for cleaning tableware by spraying a cleaning liquid onto the tableware.

[Prior art 1] As shown in Publication No. 10616/1983, a conventional dishwasher is equipped with a cleaning nozzle inside a box, and the cleaning liquid (in a washing tank) is applied to the dishes stored in the box. A detergent (containing detergent) is supplied to the cleaning nozzle and sprayed for cleaning. After cleaning for a certain period of time, the dirty cleaning water is drained from the drain pipe. Cleaning is completed after these operations are repeated several times. Further, when the above-mentioned washing is completed, normally, a rinse nozzle provided separately is used to spray hot or water rinsing liquid, and during this time, drainage is continued to wash off the washing liquid adhering to the tableware.

[Problem to be Solved by the Invention] In the conventional dishwasher as described above, the cleaning liquid is drained after one wash is completed, and the drain is continued during rinsing. There is a problem that detergent and hot water are not fully utilized because the cleaning solution has to be discarded.

This invention was made to solve the above problems, and an object thereof is to provide a dishwasher that can save detergent and hot water.

[Means for Solving the Problems] The dishwasher according to the present invention is provided with an overflow pipe in the washing tank, closes the drain valve during washing and rinsing operations, and repeats the washing and rinsing operations one or more times. During this time, water is drained from the overflow pipe, and after this operation, the drain valve is closed during the cleaning operation, and during the rinsing operation, the drain valve is opened and water is drained from the drain valve.

[Function] In this invention, during washing and rinsing operations, the drain valve is closed and water is drained from the overflow pipe, so the washing liquid always remains in the washing tank, and the amount of detergent diluted with the rinsing liquid is reduced. Just replenish.

[Embodiment 1] Figures 1 to 3 are diagrams showing one embodiment of the present invention, in which Figure 1 is an overall perspective view, Figure 2 is a pipeline diagram for explaining operation, and Figure 3 is a functional configuration of main parts. It is a diagram.

In Fig. 1, (1) is a box, which has an opening on the front, and a door (2) that opens and closes the opening is pivotally supported.

(3) is an upper basket that is stored in the box (1+) and stores tableware to be washed; (4) is a lower basket that is also placed below the upper basket (3); (5) is a cleaning nozzle; (6)
The rinsing nozzles are two rinsing nozzles arranged in parallel with each other in the transverse direction, each having an upwardly opening injection port, and a total of four sets of rinsing nozzles are arranged below the upper basket (3) and the lower basket (4). (7
) is a gear fixed to one end of the cleaning nozzle (5) and the rinse nozzle (6), (8) is an endless toothed belt wrapped around the four gears (7), and (9) is a crank ( (11) is a cleaning tank disposed below the opening of the box body (1), and a dust removal filter (12) is installed on the bottom of the cleaning tank (11). ), which communicates with a drain pipe (14) via a drain valve (13). (14A+ is an overflow pipe that communicates with the cleaning tank (Ill) and the drain pipe (14), (15) communicates with the bottom of the cleaning tank (11),
The cleaning pump (16) is a cleaning pump that sends out cleaning liquid.
15) is connected to a cleaning boiler that has a built-in heater (16a) and supplies hot water, (I7) is a water supply pipe connected to a water heater (not shown) or a water pipe, and (18) is a water supply pipe (1
7) is connected to a water supply pump that supplies rinsing water (water); (19) is a water stop valve connected to the water supply pump (18);
(20) is a three-way valve connected to the water stop valve (19);
) is connected to the negative outlet of the three-way valve (20), and the heater (
21a) is a built-in rinsing boiler that supplies rinsing hot water; (22) is a bypass pipe connected to the other outlet of the three-way valve (20) and the outlet side of the rinsing boiler (21);
3) is a three-way valve connected to the outlet side of the rinsing boiler (21), (24) is a water supply port connected to one outlet of the three-way valve (23) and opens above the cleaning tank (Ill);
5) is a rinse tank that stores rinse to improve the drying finish after rinsing, (26) is a rinse tank (25)
(27) is the cleaning boiler (16), the other outlet of the three-way valve (23), and the cleaning nozzle (
5) and a distributor connected to the rinse nozzle (6), (
28) is a blower that sucks the air inside the box (11) and pumps it; (29) is placed in the upper part of the box (1) and is rotated in a horizontal plane by a motor (3o); 28) is connected to a water spray nozzle that sprays pressurized air downward; (31) is a detergent container installed on the door (2) and contains detergent; (32) is attached to the door (2) and the box An exhaust fan (33) for discharging the steam inside the body (1) is an operation panel installed on the upper front side of the box body (11), and is connected to a control device (not shown) composed of a microcomputer.

Next, the operation of this embodiment will be explained with reference to FIG.

When washing dishes, the dishes are placed in the upper basket (3) and the lower basket (4), the door (2) is opened and the dishes are stored in the box (1), and then the door (2) is closed. And the operation panel (33)
When the upper switch is operated, the cleaning operation is started as follows according to the command from the control device.

A. 1st time■ The first water supply pump (18) operates, hot water (water) is supplied from the water heater or water supply pipe (17), and the rinsing boiler (21) is supplied from one outlet of the three-way valve (20). ) and enter the three-way valve (
23) through the water supply port (24) and falls into the cleaning tank (111).At this time, since the drain valve (13) is closed, the hot water (water) that has fallen into the cleaning tank [111] is the cleaning boiler (
16) It also flows into the interior. When this continues for a predetermined period of time, the water supply pump [18] is stopped and the water stop valve (19) is closed. Hot water (water) is now stored in the cleaning tank (111) and the cleaning boiler (16).

■ The pre-wash cleaning pump (15) is driven, and the hot water (water) in the cleaning tank (11) and cleaning boiler (16) is transferred to the distributor (27).
) is supplied to the cleaning nozzle (5) and is sprayed upward from the injection port. At this time, the swing motor (9) is driven, and the toothed belt (8) reciprocates via the crank (lO). Is this movement caused by gear (7)? It is transmitted to the conflict nozzle (5) (and the Susuki nozzle (6)) and causes it to swing. As a result, the hot water (water) injected from the cleaning nozzle (5) is directed to the upper bowl (3) and the lower bowl (4).
The tableware inside is evenly washed and washed. The washed water (water) falls into the washing tank (11) and is again supplied to the washing nozzle (5), and the above operation is repeated for a predetermined period of time. At this time, since the hot water (water) that has fallen into the cleaning tank (11) is circulated through the dust removal filter (12), there is little dirt on the cleaning liquid.

On the other hand, the heater (21al) of the rinsing boiler (21) is energized to heat the hot water (water) in the rinsing boiler (21).

■ Drainage The drain valve (13) opens and the hot water (water) in the cleaning tank (11) and cleaning boiler (16) is drained from the drain pipe (14). Boiling water in the rinsing boiler (21) continues.

■ The second water supply pump (18) operates and the three-way valve (20)
is switched, and water is supplied from the other outlet of the three-way valve (20) through the bypass pipe (22) and into the cleaning tank (11) via the water supply port (24). At this time, the drain valve (13) is closed, and as in the case of the first water supply, the hot water (water) is discharged from the cleaning tank (Ill) and the cleaning boiler (16).
), the water supply pump (18) is stopped, and the water stop valve 'f19) is closed. Now open the door (2) and
The detergent in the detergent container (31) is supplied to the hot water (water) in the cleaning tank (Ill).The rinsing boiler (21) continues to boil water.

■ The heater (16a) of the main washing boiler (16) is energized,
The hot water (water) in the cleaning boiler (16) is heated. Here, the washing pump (15) is driven and hot water containing detergent is pumped.
As in the case of pre-washing, water is ejected from the washing nozzle (5) to wash the tableware. If this cleaning operation is waited for a predetermined time,
The cleaning pump (15) is stopped and the heater f16a) is de-energized. Boiling water in the rinsing boiler (21) continues.

■ The water rinse water supply pump (18) operates and the three-way valve (23)
The hot water (water) passes through the bypass pipe (22), as in the case of the second water supply, but from the other outlet of the three-way valve (23) through the distributor (27) and the rinse nozzle (6). )
and is injected from the injection port. At this time, the rinsing nozzle (6) is swung as described above, and the rinsing water (water) is
is evenly sprayed onto tableware to wash away detergent that has adhered to it. The hot water after rinsing is transferred to the washing tank (11
), but since the drain valve (13) is closed at this time, the hot water (water) overflowing the cleaning tank fil) flows from the overflow pipe [14A] to the drain pipe (14
) is drained. The rinsing boiler (21) continues to boil water, and when the water temperature reaches a predetermined temperature, the heater (21al) is turned off.

■ The hot water rinsing three-way valve (20) f23) is switched, and hot water is forced into the rinsing boiler (21) from one outlet of the three-way valve (20) by the water supply pump (18). The hot water in (21) is supplied to the rinsing nozzle (6) from the other outlet of the three-way valve (23), and is injected from the oscillating rinsing nozzle (6) in the same way as in the case of water rinsing.
Dishes are rinsed in hot water. At this time, the rinse pump (26) is operated to suck the rinse in the rinse tank (25) and mix it into the hot water.

The tableware is now thoroughly rinsed, free of detergent and dirt, clean, and has a good finish. In addition, since tableware is heated with boiling water, it naturally
It becomes more prone to drying. The hot water that has been rinsed falls into the washing tank (11), but the overflow water is drained from the overflow pipe (14Al).If these operations continue for a predetermined period of time, the water supply pump (18) will stop. The water valve (19) is closed.

■ For air blowing, the blower (28) is operated, and the compressed air is sent through the water spray nozzle (
29) and is injected downward. Also, Mota (3
0) is driven, and the water spray nozzle (29) rotates in a horizontal plane. This jet of air blows away moisture remaining on the tableware. In this way, it is possible to sufficiently blow away the rinsing residue remaining in the recesses of the tableware, especially in the deep threaded bottoms characteristic of Japanese tableware. Note that the scattered water is drained from the drain valve (13).

- The drying exhaust fan (32) is operated to form an air flow from inside the box (1) to outside the box (1). At this time, the box body (1
) is generated due to the evaporation of the residual water, and this is discharged outside the box (1) by the airflow, promoting the drying of the tableware. Note that the drain valve (13) is also closed during this time.

[Phase] End All equipment returns to its initial state and the series of steps ends. Open the door (2) and remove the upper basket (3) and lower basket (
4) is pulled out and the washed tableware is taken out. At this time, cleaning liquid is stored in the cleaning tank (11).

B. Place tableware that needs to be washed anew from the second time onwards in the upper basket (3) and lower basket (
4), open n(2), store it in the box body (1), close the door (2), and operate the switch on the operation panel (33). ■The operation starts from the second water supply. Begins. however,
At this time, the amount of detergent that was diluted in the previous rinsing operation only needs to be replenished. Now, the operations from (1) to [phase] are executed, making it possible to save detergent and hot water.

As with the second and subsequent rounds of C8, the operation starts from the second water supply,
In ■■, the drain valve (13) is closed, but between ■ and ■, the drain valve (13) is open, and the cleaning liquid and rinsing water (water) are drained from the drain pipe (14). .

The configuration of the above embodiment is illustrated in FIG. 3.

In the figure, (41) is the first cleaning means A (41Al and the first
Cleaning means B (first cleaning means consisting of 41B+;
The cleaning means A (41A) executes the above-mentioned first operation,
First cleaning means B (41B+ executes the above-mentioned second and subsequent operations. (42) is a second cleaning means and executes the above-mentioned final operation. First cleaning means A, B (41A) F
The output from the second cleaning means (41B) gives a closing signal to the drain valve (13) via the OR game 1- (43).
The output from 2) gives the same (open and closed signals).

[Effect of the invention 1 As explained above, in this invention, an overflow pipe is provided in the cleaning tank, and during the cleaning and rinsing operations, the drain valve is closed, and the cleaning and rinsing operations are repeated one or more times, during which time no water is discharged from the overflow pipe. After this operation, during the cleaning operation, the drain valve is closed, and during the rinsing operation, the drain valve is opened and the water is drained from the drain valve, so that the cleaning liquid always remains in the cleaning tank and is diluted with the rinsing liquid. You can save detergent and hot water by replenishing the amount of detergent used.

[Brief explanation of the drawing]

Figures 1 to 3 are diagrams showing an embodiment of the dishwasher according to the present invention, in which Figure 1 is an overall perspective view, Figure 2 is a pipe diagram for explaining operation, and Figure 3 is the main functional configuration. It is a diagram. In the figure, (1) is the box body, (5) is the cleaning nozzle, (6
) is the rinse nozzle, (1st is the cleaning tank, (13) is the drain valve, (14) is the drain pipe, +14A+ is the overflow pipe, (16) is the cleaning boiler, (21) is the rinse boiler, (31) (41) is a detergent container, (41) is a first cleaning means, (
42) is a second cleaning means. Note that the same reference numerals in the figures indicate the same parts.

Claims (1)

[Claims] A cleaning tank for storing a cleaning liquid containing detergent is provided in the box body, a cleaning circuit for spraying the cleaning liquid in the cleaning tank onto the tableware stored in the box body, and a cleaning circuit for spraying a rinsing liquid made of hot water or water to A rinsing circuit for rinsing off the cleaning liquid adhering to tableware, wherein the drain valve is connected to a drain pipe and connects the washing tank and the drain pipe when opened, and the washing tank and the drain pipe are connected to the drain valve. a first cleaning means having an overflow pipe communicating therewith, and closing the drain valve during the operation of the cleaning circuit and the rinsing circuit to repeat the cleaning and rinsing operations one or more times, during which time the water is drained from the overflow pipe; and a second cleaning means that closes the drain valve when the cleaning circuit operates after the first cleaning means operates, and opens the drain valve when the rinsing circuit operates to drain water from the drain valve. Features a dishwasher.