KR950004474B1 - Washing or rinsing machines for crockery - Google Patents

Abstract

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Description

dish washer

1 is a flow chart for explaining the operation of one embodiment of the present invention.

2 is a longitudinal side view of the whole.

3 is an enlarged end side view of the water level sensor portion.

4 is a schematic electrical diagram,

5 is a process chart.

* Explanation of symbols for main parts of the drawings

14: water level switch (residual water detection means) 23: microcomputer (control means)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher, and more particularly, to a dishwasher which is suitable for use in connection with a hot water heater.

Background Art [0002] Some conventional dishwashers, which are suitable for use in connection with hot water heaters, have been disclosed, for example, in Japanese Patent Application Laid-Open No. 62-264036.

Generally, since cold water stays in the piping from the water heater to the dishwasher, and it takes some time from the water heater to the high temperature of the cold water, the dishwasher detects the temperature of the hot water supplied to a predetermined temperature (for example, 60 ( The water supplied is discharged as it is until it reaches a temperature), the water is stopped at a predetermined temperature, the water is stored, and the washing of the dishes is started.

The above invention has the advantage that the washing of the dishes can be surely performed in hot water, and therefore, the effective washing of the dishes by the hot water can be ensured. However, it has a problem that a large amount of water is required because the water is continuously discharged from the hot water heater through the pipe until the water reaches a predetermined temperature.

The present invention has been made in view of the above-described circumstances, and its purpose is to cut the waste of water when the water heater is used and use it, and to clean the dishes with hot water even when there is a residual amount of a predetermined amount or more. To provide a washer.

In order to achieve the above object, in the dishwasher of the present invention, there is provided a residual water detection means for detecting the presence or absence of a residual amount of the washing water or more, and a control means and at least water supply before washing the dishes by the control means. First preliminary water supply in the preliminary washing step when the preliminary washing step for washing and then draining the water is carried out and there is a residual amount of a predetermined amount or more from the detection result by the residual water detecting means. It is characterized in that the control is performed to execute the preliminary step by setting the time for draining while supplying water to be longer than that when it is determined that there is no residual amount of the washing water.

According to the above means, since the water supplied from the hot water heater becomes hot water during the preliminary washing process, the water is effectively used for washing therebetween. In this case, since there is no water supply when there is more than a predetermined amount of washing water, washing may be started before the water becomes hot water.

However, when it is determined that there is a residual amount more than a predetermined amount of washing water, the water draining time is set to be longer than the draining time when it is determined that there is no remaining amount of the washing water. The required amount of discharge can be reliably performed, and washing of dishes with hot water can be reliably performed.

(Example)

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

First, FIG. 2 shows the outer box 1 of the entire dishwasher, and the inner box 2 is installed inside to form the washing chamber 3, and the front part of the dish washing machine 4 is placed in the washing chamber 3 at the front. ) Is rotatably installed to open and close the door (5).

Dispensing nozzle (8) for dispensing washing water into the upper and lower two-stage table tops 6 and 7 arranged with utensils (not shown) in the washing room (3) and at the same time. And a fountain arm 9 for spraying washing water to the dishes in the lower dish container 7. In addition, the heater 10 is disposed at the bottom of the washing chamber 3, and at the same time, the water storage unit 11 for storing the washing water is formed, and the washing water is stored at the bottom of the washing chamber 3 in the outward direction. The drain pump 13, which sucks from the unit 11 and pumps the washing pump 12 and the washing water, which are pumped to the fountain nozzle 8 and the fountain arm 9, is similarly sucked from the water storage unit 11 and discharged to the outside of the washer. ) And the water level switch 14 are provided.

Specifically, as shown in FIG. 3, the water level switch 14 has an upper end portion thereof as a result of the rise of the flowchart 16 in the float case 15 installed so that the change in the water level is equal to that in the water storage unit 11. The magnet 17 provided at the upper side is made to correspond to the reed switch 18 provided on the outer surface of the upper part of the float case 15, and the required level (e.g., 5 liters equivalent) is detected by operating the reed switch 18. At the same time, it also functions as a residual water detection means for detecting the presence or absence of the residual amount of the washing water or more.

In addition, the upper part of the washing chamber 3 is provided with an exhaust tank 19 for introducing air in the washing chamber 3 to the outside of the washing machine and an intake tank 20 for introducing air from the outside of the washing machine. A fan 21 for supplying air outside the washer to the washing chamber 3 and a water supply valve 22 for supplying water into the washing chamber 3 are provided.

The microcomputer 23 which functions as a control means is shown in FIG. 4 for the above, for example, and it is provided in the inner direction of the operation panel part 24 of the downward direction of the said door 5, and an operation panel part is shown, for example. Various operation signals are input from the switch input section 25 composed of various operation switches (not shown) of (24), and a water level detection signal (residue detection means) is input from the water level switch 14 at the same time.

On the basis of its input and pre-stored control program, the microcomputer 23 comprises an indicator 26 composed of various indicators not shown in the operation panel 24, the water supply valve 22, and a washing pump ( 12), the drive control signal is provided to the drive circuits 27 to 31 for driving the drain pump 13 and the heater 10, respectively.

The operation will be described below based on the function of the microcomputer 23.

As shown in FIG. 1, when the operation is started (started), the microcomputer 23 enters the preliminary washing process (see FIG. 5) for the first time, and a predetermined amount of the washing water is detected by the level detection signal from the water level switch 14. It is judged whether or not there is a residual amount (necessary water level) or more (step S1). The remaining amount of the washing water more than a predetermined amount is generated when, for example, only a small amount of the dish is pre-washed and the dish is further washed afterwards. If it is determined that there is no remaining amount of the washing water (NO), the water supply valve 22 Is opened and water is supplied to the washing chamber 3 (step S2). Then, the water level detection signal from the water level switch 14 determines whether or not the washing water is supplied to the prescribed water level (the required water level). (Step S3) As it is judged that it has been supplied (YES), the water supply to the washing chamber 3 is terminated and the washing pump 12 is operated to perform the water washing of the tableware (step S4). Thereafter, the drain pump 13 is operated to discharge the washing water to the outside of the washer (step S5), and then the water supply valve 22 is opened to execute the water supply into the washing chamber 3 while the drain pump 13 is opened. Operate to discharge only the washing water out of the washing machine (step S6).

In this case, draining with water is performed for example for 10 seconds. Thereafter, the drain pump 13 is operated to discharge only the washing water to the outside of the washing machine (step S7).

On the other hand, if it is determined in the first step S1 that the residual amount of the washing water is higher than the predetermined amount (YES), the water level switch 14 detects the prescribed water level (the required water level), and since the water supply valve 22 does not open, it is washed. The water supply into the chamber 33 is omitted, and the fountain washing of the tableware is performed immediately as in step S4 (step S8). Thereafter, the washing water is discharged to the outside of the washing machine as in step S5 (step S9), and the water is drained while supplying water as in step S6 (step S10).

Especially in this case, draining while supplying water is carried out longer than the above-mentioned case, for example, for 30 seconds. The process then advances to step S7.

In such a case, after step S7, as shown in FIG. 5, the washing process of distilling the dishes is performed in earnest as shown in FIG.

Thus, in this configuration, the dish is to be pre-washed before washing, and the water supplied from the water heater during the pre-cleaning becomes hot water. Investigations have shown that in most homes, running 8 to 10 liters of water after running the water heater will produce hot water at 60 ° C. In the above-described case, the water supply (step S2, step S3) in the preliminary washing process is executed until the required water level equivalent to 5 liters is detected as described above. Liters / min), the water supply flows about 3 liters of water and total 8 liters of water flows into the hot water supply. Therefore, the dishes can be washed with warm water afterwards, and in this case, since the first supplied water is used to pre-wash the dishes, it is possible to reduce the waste of water without unnecessary discharge unlike the conventional method.

In addition, even in this case, when there is a residual amount or more of the washing water in the water level switch 14 from the water storage unit 11, since the water is not supplied any more, the washing is started before the water becomes hot water. However, when it is judged that there is more than a predetermined amount of washing water, the time to drain while supplying water is longer than that when it is judged that there is no more than the predetermined amount of washing water, and for 30 seconds for 10 seconds when it is judged that there is no remaining amount. In the water supply capacity of 20 (liters / minute), 10 liters of water flows and the water supplied from the water heater becomes hot water even in this case. Therefore, the dishes can then be reliably washed with hot water.

Further, in the preliminary washing process, the basic operation details are not limited to those described above, but may be at least watered and washed, and then drained while being watered.

In addition, the present invention is not limited to the above-described embodiment shown in the drawings and the drawings. For example, the washing method of the dish may be to wash the dish by immersing the dish in washing water, and the residual water detecting means may also have a float level switch. Alternatively, the transparent temperature sensor may be used, and the viewpoints such as specific numerical values exemplified can be appropriately changed within the scope not departing from the gist.

As can be seen from the above description, the dishwasher of the present invention is provided with a residual water detection means for detecting the presence of a residual amount of a predetermined amount or more of washing water, and is provided with a control means and at least watered and washed before washing the dishes by the control means. After that, the preliminary washing step for draining water is carried out, and when it is determined that there is a predetermined amount or more of the washing water from the detection result by the residual water detecting means, the initial water supply is omitted in the preliminary washing step. It is characterized in that the time for draining while supplying water is set longer than that when it is determined that there is no residual amount of the washing water, so as to control the preliminary washing process. Very little waste As certainly even when the bath is more than the amount of the remaining amount has the excellent effect of being able to carry out washing of the tableware.

Claims (1)

A preliminary washing step is provided with a residual water detecting means for detecting the presence or absence of a residual amount of the washing water or more, and a control means, wherein the control means carries out at least water supply, washes and then drains water while washing the dishes. At the same time, when it is determined from the detection result by the remaining water detecting means that there is more than a predetermined amount of washing water, the time for draining the water while omitting the first water supply in the preliminary washing step is the remaining amount of the washing water or more. A dishwasher, characterized in that it is set longer than that when it is determined that there is no control, and control is performed to execute the preliminary process.