JP2896118B2 - Method of supplying detergent and hot water to dishwasher and method of supplying detergent and rinse to dishwasher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher for setting an appropriate amount of detergent and an appropriate amount of hot water different for each user, and for setting an appropriate amount of detergent, a rinse amount and an appropriate amount of hot water. It is about technology.

[0002]

2. Description of the Related Art FIG. 5 shows a dishwasher 3. The dishwasher 3 includes a washing room 1 for adding detergent and washing with hot water and a rinsing room 2 for adding rinsing and rinsing with hot water. The cleaning chamber 1 and the rinsing chamber 2 are transported in this order. The washing chamber 1 is provided with a tank 1a at the lower part, and the rinsing chamber 2 is provided with a tank 2a at the lower part. In the figure, reference numeral 6 denotes a hot water supply pipe which supplies hot water at 50 ° C. to 60 ° C. from a hot water supply tank (not shown). The hot water supply pipe 6 is branched into a washing-side pipe line 5 and a rinsing-side pipe line 7 on the way. The pipes 5 and 7 are provided with on-off valves 8a and 8b, respectively. The end of the pipe line 5 is connected to the tank 1a of the washing room 1, and the opening and closing valve 8a is opened at the beginning of the operation of the dishwasher 3 to supply hot water into the tank 1a. When a fixed amount of hot water is supplied, the on-off valve 8a is closed. Where, where
Further, a quantity of detergent corresponding to the capacity of the tank 1a is supplied from the detergent supply unit 12 to the tank 1a, and hot water containing a certain concentration of detergent is stored in the tank 1a. The hot water containing the detergent accumulated in the tank is jetted from the jetting unit 10 by the pump 9 to wash the tableware carried into the washing chamber 1 by the transport device 11, and the detergent jetted and used for washing. The hot water is stored again in the tank 1a.

[0003] The end of the pipe 7 is connected to an injection section 14 provided in the rinsing chamber 2, and the on-off valve 8b is opened to open the injection section 1
When hot water is supplied to the side 4, the rinsing supply unit 1 provided in the middle of the pipe line 7
Rinsing is supplied from 3, and the hot water to which the rinsing has been added is jetted from the jetting unit 14 to rinse the dishes carried into the cleaning chamber 1 by the transport device 11. The on-off valve 8b is always opened during the operation of the dishwasher 3, and supplies hot water to the injection unit 14.

Accordingly, the rinsed hot water sprayed from the spraying section 14 and flowing into the tank 2a of the rinse chamber 2 overflows the tank 2a and flows into the tank 1a of the cleaning chamber 1. When the rinse-containing hot water used for rinsing flows into the tank 1a in this manner, the detergent-containing hot water in the tank 1a having the same water amount as the inflowing water amount is discharged by overflow. For this reason, if left as it is, the concentration of the detergent in the tank 1a of the washing room 1 becomes low, so that it is necessary to supply the detergent to the detergent room 1 during the operation of the dishwasher 3.

[0005] By the way, each user differs in the contents of dishes such as Western, Chinese, and Japanese dishes, and the type, material, and number of washings of tableware are different. In order to obtain the best dishwashing and rinsing conditions, the on-off valve 8b is fully opened and the amount of detergent and rinsing is changed during test operation to obtain the best dishwashing and rinsing conditions. A detergent amount and a rinse amount suitable for the user are set, and the amount of the detergent obtained by the test operation is set so as to be supplied quantitatively from the detergent supply unit during the operation of the dishwasher. The determined amount of rinse was set to be supplied in a fixed amount to the hot water supplied to the injection unit 14.

Here, in the dishwasher, the detergent concentration in the tank 1a of the washing room 1 is such that the ratio of the amount of detergent to hot water is 1/500.
The rinsing concentration to be sprayed in the rinsing chamber is determined as a standard so that the ratio of the amount of rinsing to the amount of hot water supplied to the rinsing chamber is 1/15000 so as to be 1/1000. For this reason, in the related art, a concentration sensor is provided in the tank 1a so as to know the concentration. However, the concentration differs depending on each of the upper, middle, and lower portions in the tank 1a. Ratio is 1/500 ~
It is not possible to accurately confirm whether it is 1/1000. Further, no concentration sensor is provided in the rinsing room 2, and the rinse concentration is 1/15.
Currently, it is not possible to check whether it is 000. For this reason, at the site, it is assumed that the value obtained by the test operation at the site is substantially a standard ratio between the detergent and the amount of hot water, and similarly, the amount of the rinse and the amount of hot water is determined by the test operation. It is currently considered that the ratio is standard.

Further, conventionally, the amount of detergent and rinsing to be used is determined for each user by changing the amount of detergent and rinsing by performing a test operation by fully opening the on-off valve 8b. Adjust the amount of detergent and rinsing under hot water supply conditions to find the best amount of detergent and rinsing to get the best dishwashing and rinsing conditions, so use too much hot water and use more hot water. Since the amount of detergent increases and the amount of rinsing used increases, an excessive amount of hot water naturally results in a problem that the amount of detergent and rinsing used becomes excessive. As described above, in the conventional example, there has been a problem that the amount of hot water used, the amount of detergent and the amount of rinse are excessively used, and the operating cost is increased.

Conventionally, in the above-mentioned test operation, the amount of hot water to be supplied by squeezing the on-off valve 8a and the amount of detergent and rinsing to be used are adjusted to obtain the best dishwashing and rinsing detergent. It is conceivable to obtain the amount of detergent and the amount of rinsing in such a way as to obtain the amount of rinsing and the amount of rinsing in this way. However, in this case, the user opens the opening / closing valve 8b for each use in the subsequent use. During operation, since it is not known how much the on-off valve 8b should be opened to supply the hot water corresponding to the set detergent amount and rinse amount, the desired detergent concentration and rinse concentration cannot be attained. It is not adopted because it is a simple method.

Further, as described above, even if the hot water is supplied by fully opening the on-off valve 8b, the hot water supply amount cannot be kept constant due to pressure fluctuations, the capacity of the hot water supply pump, and various other causes. Because of this, the amount of hot water varies, so that the detergent concentration and the rinse concentration may vary, and may deviate from the above-mentioned ratios of the standard detergent amount and the hot water amount or the standard rinse amount and the hot water amount. In such a case, good dishwashing and rinsing conditions, such as a test run, may not be obtained.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and the invention according to claim 1 has a minimum hot water supply in a dishwasher for each user. Supply of detergent to a dishwasher that can perform good washing and rinsing of dishes, and can stably supply a minimum amount of hot water by finding the appropriate amount of detergent corresponding to this. And a hot water supply method. Further, according to the invention of claim 2, in the dishwasher for each user, the appropriate amount of detergent and rinsing corresponding to the minimum amount of hot water can be obtained, and good dishwashing and rinsing can be performed. It is another object of the present invention to provide a method for supplying a detergent and a rinse to a dishwasher and a hot water supply method capable of stably supplying a minimum hot water supply amount.

[0011]

Means for Solving the Problems In order to solve the above-mentioned problems of the present application, a method of supplying detergent to a dishwasher and supplying hot water to the dishwasher according to the present invention includes a washing room 1 for adding detergent and washing with hot water and rinsing with hot water. The washing chamber 1 is provided with a tank 1a at the lower part thereof, and hot water containing the detergent accumulated in the tank 1a is sprayed on the tableware to flow again into the tank 1a and rinsed. In the dishwasher 3 in which the hot water or the rinsed hot water is injected into the dishes in the washing chamber 2 and the hot water after the injection flows into the tank 1a of the washing chamber 1 and is discharged to the outside by overflow. The washing test of the tableware is repeated while changing the supply amount of the hot water while maintaining the ratio of the supply amount of the hot water to be supplied to the rinsing chamber 2 to the supply amount of the detergent, so that the tableware is in the minimum washing condition. Determine the hot water supply and The amount of the detergent to be supplied at the above-mentioned fixed ratio corresponding to the minimum supply amount of hot water thus determined is determined, and a quantification valve 4 for supplying the minimum supply amount of hot water to the rinsing chamber 2 is provided. It is provided in a pipe 7 for supplying hot water to the rinsing room 2. here,
In the cleaning test, the supply amount of hot water supplied to the rinsing chamber 2 is measured by the flow meter 15 so that the supply amount of hot water is changed while the ratio of the supply amount of hot water to the supply amount of detergent is maintained at a constant ratio. By using such a method, an appropriate amount of detergent corresponding to the dish content, tableware type, material, number of washings, etc. which differs for each user can be obtained. Can be supplied, and an appropriate amount of hot water can be supplied.

The method of supplying detergent and rinsing to a dishwasher according to the present invention and a method of supplying hot water include a washing chamber 1 for adding a detergent and washing with hot water and a rinsing chamber 2 for adding rinsing to hot water and rinsing. The washing chamber 1 is provided with a tank 1a at a lower portion, and hot water containing the detergent stored in the tank 1a is jetted to the tableware and again flows into the tank 1a. Hot water to be supplied to the rinsing chamber 2 in the dishwasher 3 set so that hot water is injected into the tableware and rinsed after the injection flows into the tank 1a of the cleaning chamber 1 and is discharged to the outside by overflow. The tableware washing test is repeated while changing the hot water supply amount while maintaining the ratio of the supply amount of the detergent to the supply amount of the detergent, and the minimum hot water supply amount at which the tableware is in a desired washing state is obtained. The smallest hot water found Determining the detergent amount to be supplied at the constant rate corresponding to the supply amount, and determining the rinse amount to be supplied at the constant rate corresponding to the minimum hot water supply amount, and rinsing the minimum hot water supply amount It is characterized in that a metering valve 4 for supplying a fixed amount to the washing chamber 2 is provided in a conduit for supplying hot water to the rinsing chamber 2. Here, in the cleaning test, the flow rate of the hot water supplied to the rinsing chamber 2 is measured by the flow meter 15 so that the ratio of the hot water supply rate to the detergent supply rate is maintained at a constant rate and the hot water supply rate is maintained. The minimum hot water supply amount can be obtained by changing the hot water supply amount while maintaining the ratio of the supply amount and the rinse supply amount at a constant ratio. In addition, it is possible to supply an appropriate amount of detergent and rinsing amount corresponding to different types of dishes, types of dishes, materials, washing numbers, and the like, and to supply an appropriate amount of hot water.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings. The dishwasher 3 includes a washing room 1 for adding a detergent and washing with hot water, and a rinsing room 2 for adding rinsing to hot water or hot water and rinsing with hot water. The tableware is conveyed in the order of the washing room 1 → the rinsing room 2.
Here, in the embodiment shown in the accompanying drawings, an example is shown in which rinsing is performed by adding rinsing to hot water supplied to the rinsing chamber 2. The washing chamber 1 is provided with a tank 1a at the lower part, and the rinsing chamber 2 is provided with a tank 2a at the lower part. In the embodiment shown in the accompanying drawings, the cleaning chamber 1 is divided into two chambers, but may be divided into three or more chambers. The washing room 1 has an entrance, and the tableware is moved into the washing room 1 from the entrance by a transfer device 11 such as a conveyor.

The cleaning chamber 1 is provided with an injection section 10, and the tank 1a and the injection section 10 are connected by a circulation path 18. The circulation path 18 is provided with a circulation pump 19, and a circulation pump 19 is provided. Is operated, hot water in the tank 1a is jetted from the jetting section 10 to wash the tableware conveyed into the washing chamber 1 by the conveyor 11 such as a conveyor. The injected hot water drops again into the tank 1a and accumulates. The cleaning room 1 has a detergent supply unit 12.
The amount of the supplied detergent is determined as described later, and the detergent from the detergent supply unit 12 is supplied so that the determined amount of the detergent can be supplied from the detergent supply unit 12. The detergent supply can be adjusted at the time of setting. A temperature raising booster 20 is provided in the tank 1a, and the temperature of the hot water in the tank 1a is adjusted to a predetermined hot water temperature (for example, 65 ° C.).
The temperature is raised so that

The hot water supply pipe 6 is for supplying hot water from a hot water supply tank (not shown), and the supplied hot water is at 50 ° C. to 60 ° C. The hot water supply pipe 6 branches into a washing-side pipe line 5 and a rinsing-side pipe line 7 on the way. The pipe 5 is provided with an on-off valve 8a, and the pipe 7 is provided with an on-off valve 8b. The tip of the pipe 5 is connected to the tank 1a of the cleaning chamber 1, and hot water can be supplied to the tank 1a by opening the on-off valve 8a. A heating booster 16 and a pressure pump 17 are provided in the middle of the pipe 7, and the tip of the pipe 7 is connected to an injection unit 14 provided in the rinsing chamber 2. A rinsing unit 13 is provided, and rinsing is supplied to the hot water flowing through the pipe 7 by opening the on-off valve 8b, the rinsing is jetted from the jetting unit 14, and the tableware carried into the rinsing chamber 2 by the transfer device 11 is rinsed. It is supposed to. In this case, the temperature is raised to a predetermined temperature (for example, 85 ° C.) by the temperature raising booster 16.

Here, in use, when the tank 1a is filled with water by opening the on-off valve 8a only at the beginning of the operation, the on-off valve 8a is closed, and only the on-off valve 8b is opened during operation to inject from the injection unit 14. There is, but this, tank 2a
The hot water containing the rinsing overflows and flows into the tank 1a, and the hot water containing the detergent in the tank 1a overflows and is discharged to the outside. Therefore, tank 1
Since the detergent-containing hot water in “a” has a low detergent concentration, a constant amount is supplied from the detergent supply unit 12 so as to have the set detergent concentration.

In using the above-described dishwasher, differences in the contents of dishes such as Western dishes, Chinese dishes, and Japanese dishes, types of dishes, materials, the number of washings, and the like are different for each user. Therefore, in order to obtain the best dishwashing state and rinsing state for each user who has installed the dishwasher, it is necessary to perform a test operation and set appropriate supply amounts of detergent and rinse. In setting the appropriate supply amounts of the detergent and the rinse, the present invention is performed as follows.

That is, in the same piping configuration as the conventional one shown in FIG. 5, as shown in FIG. 2, the flow rate regulating valve 21 is provided downstream of the pressurizing pump 17 of the rinsing pipe 7.
The test operation is performed with the flow meter 15 attached. In the test operation, the on-off valve 8a is opened and the tank 1 is opened.
a is filled with water and an amount of detergent corresponding to the full state is supplied from the detergent supply unit 12. When the tank 1a is full, the on-off valve 8a is closed. On the other hand, while the on-off valve 8b is kept open during operation, the rinsing unit 13 injects the rinsing from the rinsing unit 13 while supplying rinsing. Then, the washing and rinsing operation is performed while the tableware is transported by the transporting device 11 in the same manner as the normal use of the user at the place where the dishwasher is installed. In this case, the tableware is supplied to the rinsing room 2. The ratio of hot water supply to detergent supply is a fixed percentage (ie,
The ratio between the amount of detergent and the amount of hot water is 1/500 to 1/1000), and the ratio of the amount of hot water supplied to the rinsing chamber 2 to the amount of rinsing supplied is a fixed ratio (that is, the amount of rinse and the amount of hot water). With the ratio of 1/15000)
The test operation is repeated many times while adjusting the flow control valve 21. Here, in the test operation, the detergent amount and the rinse amount to be supplied are obtained by measuring the flow rate at a certain opening degree of the flow control valve 21 with the flow meter 15 and the supply amount of hot water per unit time thus obtained. The test is performed by determining and supplying the detergent amount and the rinse amount at a certain flow rate in the test operation by determining the corresponding detergent amount and the rinse amount so as to have the above proportional relationship. Is repeated over and over while changing the flow rate to determine the minimum amount of hot water supply that can provide the best washing and rinsing state of the dishes.

Here, in the test operation, assuming that a certain amount of detergent and a certain amount of rinsing are respectively supplied, the supply amount of hot water in this case is set so that the ratio of the detergent amount to the hot water supply amount is 1/50.
0 to 1/1000, ratio of rinsing amount to hot water supply is 1/15
000, and the test operation was performed by adjusting the flow rate control valve 21 to the flow rate corresponding to the flow rate of the hot water while the flow rate was adjusted by the flow meter 15 to the corresponding flow rate. The test operation is performed by changing the rinse amount to a flow rate corresponding to the rinse amount, and the above test operation is repeated many times to obtain the minimum hot water supply amount that can obtain the best washing and rinsing state of the dishes. It is also possible to do so.

Here, the ratio between the amount of detergent and the amount of hot water is 1/50.
If the detergent concentration is higher than 1/500, the detergent component adheres to the glass to be washed and becomes cloudy, and a good washing and rinsing state cannot be obtained. If the condition remains, it will have an adverse effect on glasses and the like. If the detergent concentration is lower than 1/1000, a good cleaning effect cannot be obtained. Therefore, the ratio between the amount of detergent and the amount of hot water is set in the range of 1/500 to 1/1000.

The minimum amount of hot water supplied and adapted to the content of the dish, the type of tableware, the material, the number of times of washing, etc. of the user who has installed the dishwasher 3 as described above. After finding the optimal detergent amount and optimal rinse amount,
As shown in FIG. 1, the rinsing side pipe 7 is provided with a metering valve 4 corresponding to the minimum amount of hot water supplied as described above, and a constant flow of hot water is supplied to the injection section 14 of the rinsing chamber 2. The detergent supply unit 12 supplies an amount of detergent corresponding to the minimum supply amount of hot water determined as described above.
It is set to supply a fixed amount from. Similarly, the amount of rinsing corresponding to the minimum supply amount of hot water determined as described above is set to be supplied from the rinsing supply unit 13 in a constant amount.

In mounting the metering valve 4, in the embodiment shown in the accompanying drawings, as shown in FIGS.
An example is shown in which it is mounted between the flow meter 4 and the flow control valve 21. As shown in FIG.
A flange portion 29 is formed at one end of the cylindrical portion 28.
Is chamfered in an arc shape (that is, rounded) as a guide surface. In the present embodiment, the cylindrical portion 28
Is closed by a bottom, and a hole 30 is formed in the outer peripheral surface of the other end of the cylindrical portion 28.

This metering valve 4 is fitted into a cylinder 25. The cylindrical body 25 has a large-diameter portion 25a on one half and a small-diameter portion 25b on the other half, and a female screw portion 26 is formed on the inner peripheral surface of the large-diameter portion 25a. An external thread 27 is formed on the surface. Then, the female thread 26 of the large diameter portion 25a of the cylindrical body 28 is screwed into a male thread formed on the outer peripheral portion of the tube 31 on the side of the metering valve 4, and further provided on the tube 32 on the flow regulating valve 21 side. The nut 33 to the cylinder 2
5 by being screwed into the male screw portion 27 of the small diameter portion 25b. In this case, when the nut 33 is tightened, the small-diameter contact portion 33a formed at one end of the nut 33 has a contact portion 3 protruding from the outer peripheral portion of the end of the tube portion 32.
2a. In the figure, reference numeral 34 denotes a packing.

Here, in order to make the amount of flowing water supplied to the injection portion 14 substantially constant, a large number of quantitative valves 4 having different water path diameters d (that is, inner diameters) of the cylindrical portion 28 are prepared in advance. Then, from among a number of quantification valves 4 having different water path diameters d, a quantification valve 4 having an appropriate water path diameter d for supplying the minimum supply amount of hot water determined as described above to the injection unit 14 is selected. It is.

After the metering valve 4 is attached as described above, the flow regulating valve 21 is fully opened. In the operation of the dishwasher 3 thereafter, the opening / closing valve 8b is opened due to the presence of the flow control valve 21, so that the injection unit 14 of the rinsing room 2 has the best condition for the user determined in the test operation. The hot water is supplied so that the washing water and the rinsing state of the dishes become the minimum amount of hot water supplied. Then, the amount of rinsing corresponding to the minimum flow rate obtained by the test operation is quantitatively supplied from the rinsing supply unit 13, so that the hot water containing the rinsing with the optimum rinsing concentration is injected from the injection unit 14. In the rinsing room 2, the dishes can be rinsed. Also, the same amount of rinsed water as the amount injected from the injection unit 14 overflows from the tank 2a and flows into the tank 1a, but the amount of detergent corresponding to the minimum flow rate obtained by the test operation is equal to the amount of detergent. By being supplied from the supply unit 12 in a constant amount, the detergent concentration in the tank 1a can be maintained within the reference range, and hot water containing detergent is injected from the injection unit 10 by the operation of the circulation pump 19, and Can wash dishes.

Incidentally, in the embodiment of the accompanying drawings, an integrating flow meter is used as the flow meter 15. When this integrating flow meter is used, before the test operation according to the above-described method of the present invention, the amount of detergent and the amount of rinsing are set in the same manner as before, and the dishwasher is operated for a certain period (for example, one month). Operate and calculate the flow rate during the operation.
Thereafter, the test operation according to the present invention is performed in the same manner as described above, and the minimum quantity of hot water supplied for obtaining the best dishwashing and rinsing conditions for the user is obtained, and the quantitative valve 4 is attached. The detergent amount and the rinse amount corresponding to the minimum hot water supply amount are determined, and these are set so as to supply them quantitatively. Thereafter, the main operation after the setting is performed.
Then, the difference between the amount of hot water used before and after the setting of the metering valve 4 according to the present invention can be determined by integrating and calculating the used flow rate for a certain period (for example, one month) in the actual operation, and the user can save water. The effect will be clearly recognized. It is also understood that saving water in this way can reduce the cost of fuel for boiling hot water, electricity, and the like. Further, the fact that the amount of water used is small and the standard detergent concentration and rinse concentration are maintained means that the detergent and rinse are used properly and that they are not used excessively.

In the embodiment shown in FIGS. 1 and 2, an integrating flow meter 35 and a metering valve 4a are also mounted on the pipe line 5 on the cleaning side. The reason why the metering valve 4a is provided in the washing-side pipe line 5 is that the opening and closing valve 8a is opened at the beginning of the operation of the dishwasher 3 and the tank 1a is filled with water.
Is closed, and the operation is continued. However, after the tank 1a is filled with water, the on-off valve 8a may be forgotten to be closed and used while the on-off valve 8a is open. In such a case,
Once the tank 1a is filled with hot water, the hot water subsequently supplied to the tank 1a from the washing-side pipe line 5 is wasted water, the amount of water used becomes excessive, and the detergent concentration in the tank 1a becomes thin. In this case, a good quantity of valve 4a is provided in order to minimize the flow rate of hot water supplied from the washing-side pipe line 5 in such a case, because a good washing state and rinsing state of the tableware cannot be obtained. This is to prevent the hot water from being supplied as wastefully as possible. By knowing the amount of hot water supplied from the washing-side pipe line 5 by the integrating flow meter 35, if the amount of water in the certain period obtained by the integrating flow meter 35 is too large, The user can understand that the on-off valve 8a has been used with the valve open, and call attention to the operator.

In the drawing, reference numeral 36 denotes a strainer, and 37 denotes a flow control valve. In the above embodiment, an example is shown in which rinsing is performed by adding rinsing to hot water supplied to the rinsing room 2, and in determining the amount of rinsing, the minimum amount of hot water required for each user determined by the above-described method of the present invention is determined. Although the example in which the rinse amount corresponding to the supply amount is obtained is shown, even when the rinse is not added, the minimum hot water supply amount and the optimum detergent amount corresponding thereto can be obtained in the same manner as described above. Things.

[0029]

According to the first aspect of the present invention, as described above, the ratio of the amount of hot water supplied to the rinsing chamber to the amount of detergent supplied is maintained while maintaining a constant ratio. The tableware washing test is repeated while changing the supply amount to determine the minimum supply amount of hot water at which the tableware is in the desired cleaning state, and the supply at the above-mentioned fixed ratio corresponding to the minimum supply amount of hot water thus obtained. The amount of detergent to be determined is determined, and a metering valve for quantitatively supplying the minimum amount of hot water to the rinsing chamber is provided in the conduit for supplying hot water to the rinsing chamber, so that the detergent concentration is constant. In supplying the hot water in such a manner, by determining the amount of hot water to be supplied, it is possible to easily and accurately determine and supply an appropriate amount of detergent corresponding to the hot water amount, so that good dishwashing and rinsing can be performed. Also, ensure that the minimum hot water supply is Since it is, cleaning of good tableware, which rinsing can be stable, moreover,
Since the amount of hot water and detergent used can be minimized, it is possible to save water, save detergent, save fuel and electricity.

In the invention according to claim 2 of the present invention, the ratio of the amount of hot water supplied to the rinsing chamber to the amount of detergent supplied is changed while maintaining a constant ratio. Repeat the dishwashing test to determine the minimum amount of hot water to supply the dish to the desired cleaning state, and determine the above-defined constant rate of the amount of detergent to be supplied corresponding to the minimum amount of hot water thus determined. Determine and determine the amount of rinsing to be supplied at the above-mentioned fixed ratio corresponding to the minimum hot water supply amount, and set a quantification valve for quantitatively supplying the minimum hot water supply amount to the rinsing chamber to the rinsing chamber. Because it is installed in the pipeline that supplies hot water,
By determining the amount of hot water to be supplied when supplying so that the detergent concentration becomes a constant concentration and the rinse concentration becomes a constant ratio, an appropriate detergent amount and an appropriate rinse amount corresponding to this hot water amount can be easily and accurately determined. As it can be determined and supplied, good dishwashing and rinsing can be performed, and a minimum amount of hot water can be supplied stably, so that good dishwashing and rinsing are stable. The amount of hot water, detergent and rinsing used can be minimized, saving water, saving detergent, saving fuel,
This can save electricity bills.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of the present invention.

FIG. 2 is a schematic configuration diagram in a test operation stage before the same quantitative valve is attached.

FIG. 3 is a plan view of a portion where the flow meter, the metering valve, and the flow rate adjusting valve are mounted.

FIG. 4 is a cross-sectional view of a mounting portion of the same metering valve.

FIG. 5 is a schematic configuration diagram in a stage before a test operation according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Washing room 1a Tank 2 Rinse washing room 3 Dishwasher 4 Quantitative valve 7 Pipe

Claims (2)

(57) [Claims] 1. A washing room for adding a detergent and washing with hot water and a rinsing room for washing with hot water or hot water and rinsing the washing water, and the washing room has a tank at a lower portion and is stored in the tank. The detergent-added hot water is sprayed onto the dishes and then re-flushed to the tank. In the rinsing room, the running hot water is sprayed onto the dishes and the hot water after the spray or the rinsed water is added to the tank of the washing room. In a dishwasher set to drain to the outside by overflowing, the ratio of hot water supplied to the rinsing room to detergent supplied while changing the hot water supply while maintaining a constant ratio. The washing test is repeated to find the minimum amount of hot water that will cause the dishes to be in the desired cleaning state, and the fixed amount of detergent to be supplied corresponding to the minimum amount of hot water thus determined is determined. And
A method for supplying a detergent to a dishwasher and a method for supplying hot water, characterized in that a metering valve for supplying a minimum amount of hot water to the rinsing room is provided in a pipe for supplying hot water to the rinsing room. 2. A washing room for adding a detergent and washing with hot water and a rinsing room for rinsing the hot water and rinsing the washing water. The washing room has a tank at a lower portion, and the detergent stored in the tank is provided. The added hot water is sprayed on the dishes and then re-flowed to the tank, and in the rinsing room, hot water during operation is sprayed on the dishes, and the rinsed hot water flows into the washing room tank and overflows. In a dishwasher that is set to discharge to the outside, a dishwashing test is performed while changing the amount of hot water supplied while maintaining a constant ratio of the amount of hot water supplied to the rinsing room and the amount of detergent supplied. The minimum amount of hot water to be supplied to the tableware in a desired washing state is repeatedly determined, and the above-mentioned fixed rate of detergent to be supplied corresponding to the minimum amount of hot water thus determined is determined. Depending on the hot water supply Determining the amount of rinsing to be supplied at the fixed rate, and providing a metering valve for supplying a minimum amount of hot water to the rinsing chamber in a conduit for supplying hot water to the rinsing chamber. How to supply detergent and rinse to the dishwasher and how to supply hot water.