KR950009983B1 - Washing or ringing machines for crockery or table's water supply apparatus - Google Patents

Abstract

a first circulation valve installed in an absorbing pipe connected to a washing basin, which is closed, if a water supply valve is opened, and is opened, if closed; a washing water supply/drain pump installed in an output pipe and the absorbing pipe divided from a spray arm within the washing basin, which is opened/closed in accordance with supply/drain operations of the washing basin; a second circulation valve installed in the output pipe and engaged with the water supply valve; and a drain valve installed in the output pipe between the supply and drain pump and the second circulation valve, which is closed, if the water supply valve is opened, and is opened, if closed.

Description

Drainer of dishwasher

1 is a longitudinal sectional view showing a conventional dishwasher.

2 is a block diagram showing the control means of FIG.

3 is a table showing the operating state of the valve and the pump according to the driving mode of the conventional dishwasher.

Figure 4 is a longitudinal sectional view showing a dishwasher according to the present invention.

5 is a configuration diagram showing the control means of FIG.

Figure 6 is a table of the operation state of the valve and the pump according to the drive mode of the dishwasher in the present invention.

* Explanation of symbols for main parts of the drawings

1: washing tank 2: suction pipe

4: water supply valve 5: first circulation valve

6: spray arm 7: discharge tube

8: pump 9: second circulation valve

10: drain valve 11: control means

12 control circuit part 13 water level detection part

14: hydraulic pressure determining unit

The present invention relates to a water supply and drainage device of a dishwasher, and more particularly, it is possible to compact the size of the washing and drainage pump installed in the dishwasher into one, and to maintain a constant water pressure state regardless of the water pressure change during water supply. It would be. As the conventional dishwasher is shown in Figures 1 to 3, the dish to be washed on the dish fixing member 15 installed in the inside of the washing tub (Tub) (1a) and the washing tank of the upper side of the washing tank (1a) When the water supply valve 4 of the water supply pipe 3a communicating with (1a) is opened, the washing water is supplied into the washing tank 1a through the water supply pipe 3a, and when a predetermined amount is supplied, the control circuit part 12 of the control means 11a and The control circuit unit 12 outputs a signal for driving the closing and cleaning pump 8a of the water supply valve 4 to the first driving unit 15 by the connected water level detecting unit 13, and at the same time, the first triac 16a is turned on so that the connected cleaning pump 8a is operated.

Therefore, the pressure of the washing water is increased so that the spray arm in the washing tank 1a is passed through the filter 18, the first suction pipe 2a, the washing pump 8a, and the first discharge pipe 7a on the lower side of the washing tank 1a. 6) the washing water is delivered to the spray arm (6) while rotating the washing water is sprayed on the dishes to wash, the washing water is continuously sprayed to wash and rinse for a certain time.

Thereafter, the operation of the cleaning pump 8a is stopped by the control means 11a, and the drainage pump 8b is driven by the on of the third triac 22, so that the second suction pipe 2b in accordance with a predetermined process → The water is discharged to the drain pipe 21 via the drain pump 8b → the second discharge pipe 7b → the drain tank 20.

In addition, when hot water is required in the washing and rinsing process, the washing water is heated by the hot water heater 23 and maintained at an appropriate temperature by the water temperature detecting unit 24. When the dishes are dried after washing and draining, the hot water is used. The heater 23 and the drying motor 25 are driven to dry.

The key input unit 26 is a part for inputting and setting the washing course and time desired by the user, and the LED display unit 27 displays the set washing course and time and informs the user. In addition, when an abnormality occurs during the washing operation, the buzzer 29 is ringed by the second driving unit 28 to inform the user, and the water pollution detection unit 30 detects the degree of dish contamination and the washing state, thereby controlling the control circuit unit 12. The control signal is outputted to the first driver 15 by the predetermined process.

The power supply unit 31 supplies DC power required to the control circuit unit 12, and the surge absorption unit 32 includes a drain pump 8b, a cleaning pump 8a, a drying motor 25, and a hot water heater ( 23) The surge generated when the lamp is operated is absorbed so as not to be applied to the AC power source 33, and the BD 34 supplies a DC power source necessary for driving the water supply valve 4 as a stop value. do.

However, such a conventional dishwasher has to use two washing and draining pumps (8a) and (8b), so that the structure of the washing tank (1a) is complicated, the size of the device is large, and the price is not only expensive. If the water pressure change is severe, there is a lot of problems such as the washing time is different, or when the storage is very weak, the efficient dish washing is often not generated, thereby reducing the reliability of the device.

The present invention is to solve the above-mentioned problems, the present invention is a simple structure by integrating the washing and drainage pump of the dishwasher in one, not only can reduce the manufacturing cost by compact size, but also related to the water pressure change during water supply It is an object of the present invention to provide a water supply and drainage device of a dish washer that can always maintain a constant state without improving the washing efficiency.

In order to achieve the above object, the present invention is installed in the suction pipe branched in communication with the washing tank is a first circulation valve interlocked as the water supply valve is opened and closed when the water supply and drainage of the water, and branched in communication with the spray arm of the suction pipe and the washing tank A pump for washing and drainage, which is installed between the discharge pipes and is operated during water supply and drainage, a second circulation valve installed in the discharge pipe and opened and closed during water supply and drainage, and drainage installed and opened during water supply and drainage. It is a water supply and drainage device of a dishwasher composed of valves.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 4 to 6.

4 is a longitudinal sectional view showing the dishwasher according to the present invention, and FIG. 5 is a block diagram showing the control means of FIG.

The first circulation valve (5) interlocked with the water supply valve (4) of the water supply pipe (3) is opened and closed in the suction pipe (2) in communication with the lower end side of the washing tank (1) of the dishwasher is opened and closed. Between the lower end of the suction pipe (2) and the discharge pipe (7) branched in communication with the spray arm (6) in the washing tank (1) is provided with a pump (8) for washing and drainage, which is operated at the time of water supply and drainage, A second circulation valve 9, which is opened and closed at the time of water supply and drainage, is installed at the discharge pipe 7 on one side of the pump 8, and a drain valve 10 which is opened and closed at the time of water supply and drainage is provided at the discharge pipe 7 below the pump 8. ) Is installed. In addition, a signal from the water level detection unit 13 is applied to the control circuit unit 12 of the control unit 11 installed in the lower part of the washing tank 1 when the water supply pressure is insufficient or the water pressure fluctuation is severe. A hydraulic pressure judging unit 14 for automatically judging hydraulic pressure to drive (8) to maintain a constant pressure state is configured.

According to the present invention configured as described above, the water supply valve 4 of the water supply pipe 3 and the washing tank 1 in the state in which the dishes to be washed are placed on the dish fixing member 15 installed at the center of the washing tank 1 of the dish washing machine. When the second circulation valve 9 installed in the discharge pipe 7 on one side of the pump 8 branched in communication with the spray arm 6 is opened, the washing water is supplied from the water supply pipe 3 to the suction pipe 2 to the washing and draining. It is injected into the washing tank 1 through the spray arm 6 in the washing tank 1 via the combined pump 8 → discharge pipe 7.

When a certain amount of washing water is injected into the washing 1, the control circuit 12 is connected to the first driving unit by the water level detecting unit 13 connected to the control circuit 12 of the control unit 11 installed under the washing tank 1. 15) the water supply valve 4 is opened and the first circulation valve 5 installed in the suction pipe 2 branched in communication with the lower end side of the washing tank 1 and the pump for both washing and draining. The first and fifth triacs (6) and (7) are turned on, and the washing water is filtered (18) → suction pipe (2) → first circulation valve (5) → pump (8) at the lower side of the washing tank (1). ), The discharge pipe (7) → the second circulation valve (9) → the spray arm (6) is supplied into the washing tank (1) to circulate.

At this time, the spray arm (6) in the washing tank (1) is rotated by washing the washing water to the dish while washing, the washing water is dropped into the washing tank (1) and continuously circulated through the filter 18 to wash and rinse for a predetermined time Will be

When the dish washing is completed, the second circulation valve 9 is closed by the control means 11 installed at the bottom of the washing tank 1 and the sixth triac 19 is turned on to open the drain valve 10. The washing water is then passed through a filter (18), suction pipe (2), first circulation valve (5), pump (8), discharge pipe (7), drain valve (10), drain tank (20), drain pipe (21). Drained.

On the other hand, when the water pressure is insufficient in the water supply mode or the pressure fluctuation of the tap water is severe, the signal of the water level detection unit 13 connected to the control circuit unit 12 of the control unit 11 is applied to the hydraulic pressure discriminating unit 14 to control circuit unit 12 Since the pump (8) for both the washing and drainage is driven by a), it is possible to maintain a constant water pressure state, and thus it is possible to improve the washing efficiency by always supplying water in a constant state regardless of the water pressure change.

As described above, the present invention can provide efficient water supply and drainage as one integrated washing and draining pump 8 installed in the dishwasher, and can reduce the manufacturing cost by compacting the size of the device as a simple structure. In addition, it is possible to increase the washing efficiency of the dishes by maintaining a constant water supply state regardless of the water pressure change during water supply.

Claims (2)

A first circulation valve (5) installed in the suction pipe (2) communicating with the washing tank (1) and closed when the water supply valve (4) is opened and closed when the water is drained, and the spray arm (6) in the washing tank (1); It is installed between the discharge pipe (7) and the suction pipe (2) communicated and branched, the pump (8) for washing and drainage for opening and closing according to the operation of the supply and drainage of the washing water, and is installed in the discharge pipe (7) The second circulation valve (9) interlocked with the water supply drainage (4) and the discharge pipe (7) between the cleaning and drainage pump (8) and the second circulation valve (9) is installed on the water supply valve (4) ) Is opened and closed when closed, the water supply and drainage device of the dishwasher, characterized in that consisting of a drain valve (10). According to claim 1, wherein the control circuit part 12 of the control means 11 installed in the lower portion of the washing tank 1 is applied to the control circuit part (13) when the signal of the water level detection unit 13 is applied when there is a lack of water pressure or water pressure fluctuations during the water supply. 12) A water supply and drainage device of a dishwasher connected with a hydraulic pressure discriminating unit 14 for automatically determining the hydraulic pressure so as to drive the pump 8 to maintain a constant hydraulic pressure state.