JP2001057957A - dishwasher - Google Patents

Abstract

(57) [Summary] [PROBLEMS] In a dishwasher for washing dishes, an optimum amount of water is supplied according to a process and an extra amount of water is not used, thereby realizing energy saving and time reduction. SOLUTION: A water level of a washing tank to be supplied by a water supply valve 3 is detected by a water level detecting means 24, and a series of operations are sequentially controlled by a control means 22. The control means 22 makes the water level of the washing step higher than any of the water levels of the rinsing step repeated one or more times.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher for washing dishes.

[0002]

2. Description of the Related Art Conventionally, this type of dishwasher has been configured as shown in FIGS. Hereinafter, the configuration will be described.

[0003] As shown in FIG. 12, a washing tank 1 accommodates tableware 2 therein, supplies washing water from a water supply valve 3, and stores the washing water at the bottom. The washing nozzle 4 is rotatably supported in the washing tank 1 and jets washing water toward the tableware 2. The cleaning pump 5 sends cleaning water to the cleaning nozzle 4. The water level detecting means 6 detects whether or not the water level in the washing tank 1 has reached a predetermined water level, and outputs it as an electric signal.

[0004] A heater 7 is provided at the bottom of the cleaning tank 1 to heat the cleaning water. The thermistor 8 is attached to the bottom of the cleaning tank 1 so as to be in close contact with the outside, and detects the temperature of the cleaning water and the temperature of the cleaning tank 1 by heat conduction. The drainage pump 9 discharges the washing water in the washing tank 1. Blower fan 10
Is for sending out steam in the washing tank 1, and the steam in the washing tank 1 is discharged from the exhaust port 11 to the outside of the machine. Tableware basket 12
Is for disposing the tableware 2. Door 13 is tableware 2
The washing tank 1 and the tableware basket 12 can be opened and closed in conjunction with opening and closing of the door 13. Whether this door 13 is open
The closed state is detected by the lid open detecting means 14.

The control unit 15 controls the water supply valve 3, the washing pump 5, the heater 7, the drain pump 9, the blower fan 10 and the like to sequentially control the washing, rinsing and drying steps, as shown in FIG. It is configured as follows.

As shown in FIG. 13, an input means 16 designates a power switch 16a for turning on / off the power, a start switch 16b for starting and stopping the operation, a course switch 16c for setting a course, and a water temperature for a final rinsing stroke. It comprises a rinse switch 16d and the like.

[0007] The control means 17 is constituted by a microcomputer, and through a load control means 18 in accordance with an input set by the input means 16, a water supply valve 3, a washing pump 5, a heater 7, a drainage pump 9, a blower fan A load such as 10;
The display unit 19 and the notifying unit 20 are controlled according to a predetermined sequence.

The display means 19 comprises a light emitting diode, as shown in FIG. 13, and comprises a course display section 19a for displaying course contents, a rinse display section 19b for displaying a final rinse water temperature, and the like. . Also, the notifying means 20
Is constituted by a piezoelectric buzzer. Power supply circuit 2
Reference numeral 1 denotes a power supply for the control means 17 and the like.

The operation of the above configuration will be described. When the user starts the operation after placing the tableware 2 in the tableware basket 12 and storing it in the washing tank 1, putting the detergent in the door 13 and closing the door, first, the washing tank is started. Tap water is supplied from the water supply valve 3 until the water level detecting means 6 detects that a predetermined water level has been reached at the bottom of the water supply 1. When the water level reaches a predetermined level, the cleaning pump 5 and the heater 7 are energized, and the cleaning water is heated while the cleaning pump 5 is being heated.
Is ejected from the washing nozzle 4 toward the tableware 2.

At this time, the temperature of the washing water is detected by the thermistor 8, and the control device 15 keeps track of the temperature of the washing water. When the temperature of the washing water reaches a predetermined temperature and a predetermined time has elapsed from the start of the washing process, the control device 15 terminates the washing process, energizes the drain pump 9, and once drains the washing water.

Next, tap water is newly supplied, and the same operation as in the above-described washing process is performed for several minutes to drain the water. After repeating this rinsing step several times, the same operation as a washing step called a heating rinsing step (final rinsing step) is performed, and when a predetermined temperature is reached and a predetermined time has elapsed, this is terminated and drained. . Finally, the blower fan 10 is operated to discharge the steam in the cleaning tank 1 to the outside of the apparatus, and at the same time, the heater 7 is intermittently energized to heat the tableware 2 to dry the attached water droplets.

[0012]

In such a conventional configuration, the water level detecting means 6 can only determine whether or not the water level has reached a predetermined level, and all the strokes are operated at the same water level. For this reason, the predetermined water level detected by the water level detection means 6 has to be set according to the stroke that requires the largest amount of water during operation. For example, in the washing process, since the detergent is supplied, foaming is large, and the water level tends to decrease. Further, the cleaning pump 5 easily sucks air. Therefore, the water level detecting means 6 is set according to the amount of water required in the washing process, and an extra amount of water is used in the rinsing process and the like.

[0013] In response to recent demands for energy saving and time reduction, the use of an excess amount of water not only contradicts energy saving but also requires increasing the water temperature in order to secure cleaning performance with respect to the excess amount of water. Instead, time was extended and energy was consumed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its first object to supply an optimal amount of water in accordance with a process and to save energy and shorten time by avoiding use of an extra amount of water. .

It is a second object of the present invention to use a single water level detecting means for detecting a predetermined water level and to set an optimum water level according to a stroke, thereby realizing energy saving and time reduction at low cost. And

[0016]

According to the present invention, in order to achieve the first object, a water level of a washing tank to be supplied by a water supply unit is detected by a water level detection unit, and a series of operations are sequentially controlled by a control unit. The control means is configured such that the water level in the washing step is higher than any water level in the rinsing step repeated once or plural times.

[0017] Thus, a large amount of water is supplied in the washing process in which foaming is caused by the detergent and a large amount of water is required,
By supplying a smaller amount of water in the rinsing process, it is possible to supply an optimal amount of water according to the process, not to use an extra amount of water, and to save energy and reduce time.

In order to achieve the second object, the water level of the washing tank to be supplied by the water supply means is detected by the water level detection means, and the time for which the water supply is continued is measured by the water supply continuation time measuring means. It is configured to sequentially control a series of operations, and the control means supplies water until the water level detection means detects a predetermined water level, and then continues water supply until the water supply duration measuring means measures a predetermined time. is there.

Thus, it is possible to use a single water level detecting means for detecting a predetermined water level, and to set an optimum water level according to a stroke, thereby realizing energy saving and time reduction at low cost.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a series of operations including a cleaning tank, water supply means for supplying water into the cleaning tank, water level detecting means for detecting a water level in the cleaning tank. Control means for sequentially controlling the water level in the washing step, which is higher than the water level in any one of the rinsing steps repeated one or more times. By supplying a large amount of water in the washing process that requires a large amount of water, and supplying a smaller amount of water in the rinsing process, it is possible to supply the optimal amount of water according to the process and avoid using excess water As a result, energy saving and time reduction can be realized.

According to a second aspect of the present invention, there is provided a cleaning tank, water supply means for supplying water into the cleaning tank, water level detecting means for detecting a water level in the cleaning tank, and control means for sequentially controlling a series of operations. Wherein the control means sets the water level in the first rinsing stroke higher than the water level in the final rinsing stroke, and in the first rinsing stroke in which more detergent components remain, a large amount of water is provided. Can be supplied, and a smaller amount of water can be supplied in the second and subsequent rinsing steps, so that energy saving and time reduction can be realized.

According to a third aspect of the present invention, in the second aspect of the present invention, the control means lowers or equalizes the water level of the rinsing process repeated at least three times with each repetition. Since a more optimal amount of water can be supplied, energy saving and time reduction can be realized.

According to a fourth aspect of the present invention, there is provided a cleaning tank, a water supply means for supplying water into the cleaning tank, a water level detecting means for detecting a water level in the cleaning tank, and a water supply continuation for measuring a time for which the water supply is continued. Time measuring means, and control means for sequentially controlling a series of operations, the control means, after the water level detecting means water is detected until a predetermined water level is detected, until the water supply duration measuring means measures a predetermined time Water supply is continued, using a single water level detection means to detect a single predetermined water level, and it is possible to set the optimum water level according to the stroke, realizing energy saving and time reduction at low cost can do.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the control means supplies water until the water level detecting means detects a predetermined water level, and then sets a predetermined time for continuing the water supply in a washing process. Is longer than either one of the rinsing strokes repeated one or more times,
Using a single water level detection means to detect a predetermined water level, it is possible to supply a large amount of water in the washing process that requires a larger amount of water, and to supply a smaller amount of water in the rinsing process, Energy saving and time reduction can be realized at low cost.

According to a sixth aspect of the present invention, in the invention of the fourth or fifth aspect, the control means supplies water until the water level detection means detects a predetermined water level, and then sets the predetermined time for continuing water supply to be one. The first rinsing stroke is longer than the final rinsing stroke, and uses a single water level detecting means for detecting a predetermined water level, and the first rinsing stroke in which more detergent components remain. In this case, a large amount of water can be supplied, and a smaller amount of water can be supplied in the second and subsequent rinsing steps, so that energy saving and time reduction can be realized.

[0027] The invention according to claim 7 provides the above-mentioned claims 4 to
6. The invention according to 6, further comprising input means for performing an input operation, wherein the control means supplies water until the water level detection means detects a predetermined water level, and then switches a predetermined time for continuing water supply by the input means. Therefore, it is possible to set the expected water level even in a place where the supply water flow rate is extremely small.

[0027] The invention according to claim 8 provides the invention according to claims 4 to
7. The invention according to 7, further comprising water supply flow rate detection means, wherein the control means supplies a predetermined time for continuing water supply after the water level detection means detects a predetermined water level, based on a detection result of the water supply flow rate detection means. When the water supply flow rate is high, the predetermined time is shortened, and when the water supply flow rate is low, the predetermined time is lengthened.After the water level is detected until the water level detecting means detects the predetermined water level, the predetermined time for continuing the water supply is determined. It can be varied according to the supply water flow rate, and the optimum water level can be obtained regardless of the supply water flow rate.

[0028]

Embodiments of the present invention will be described below with reference to the drawings. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

(Example 1) As shown in FIG.
The tableware 2 is housed inside with the upper surface as an opening, and the washing water is stored at the bottom. The lid opening detecting means 14 is
Is detected, and as shown in FIG. 1, the output is input to the control means 22, and the control means 22 determines whether the door 13 is open or closed.

The control device 23 includes a water supply valve (water supply means) 3,
Cleaning pump 5, heater 7, drain pump 9, blower fan 1
It controls each step of washing, rinsing, and drying sequentially by controlling 0 and the like, and is configured as shown in FIG. The water level detecting means 24 detects the water level of the washing tank 1, and outputs its output to the control means to detect a plurality of water levels.

The control means 22 is constituted by a microcomputer, and receives a water supply valve 3, a washing pump 5, a heater 7, a drain pump 9, a blower fan through a load control means 18 in accordance with an input set by the input means 16. A load such as 10;
The display means 19 for performing the display operation and the notification means 20 for performing the notification operation are controlled in accordance with a predetermined sequence.

The control means 22 controls the water level (second to second water levels) of the rinsing step which repeats the water level (first predetermined water level) of the washing step a plurality of times.
(Fourth predetermined water level), and the water level of the rinsing step is the water level of the first rinsing step (second predetermined water level), and the water level of the second rinsing step (third predetermined water level). , The water level (fourth predetermined water level) of the final rinsing stroke is lowered.

The operation of the above configuration will be described with reference to FIG. 2. The control means 22 starts operation at step 25. In step 26, water is supplied until the input from the water level detecting means 24 reaches a first predetermined water level (for example, a water column of 50 mm). Thereafter, the process proceeds to step 27, where the cleaning pump 5 and the heater 7 are operated. In step 28, it is determined from the conditions such as the operating time of the cleaning pump 5 and the water temperature whether or not the cleaning process should be completed. If the cleaning process cannot be completed yet, the process returns to step 27. If it is determined in step 28 that the washing process should be completed, the process proceeds to step 29, where a draining process is performed.

When the drainage process in step 29 is completed, water is supplied in step 30 until the input from the water level detecting means 24 reaches a second predetermined water level (for example, a water column of 45 mm). Thereafter, in step 31, the cleaning pump 5 and the heater 7
It is determined in step 32 whether the first rinsing step should be completed based on conditions such as the time for operating the cleaning pump 5 and the water temperature. If the first rinsing step cannot be completed, the process returns to step 31. If it is determined in step 32 that the first rinsing process should be completed, the process proceeds to step 33, where a draining process is performed.

When the drainage process in step 33 is completed, water is supplied in step 34 until the input from the water level detecting means 24 reaches a third predetermined water level (for example, a water column of 40 mm). Then, in step 35, the cleaning pump 5 and the heater 7
It is determined in step 36 whether or not the second rinsing step should be completed based on conditions such as the time for operating the cleaning pump 5 and the water temperature. If the second rinsing step cannot be completed, the process returns to step 35. If it is determined in step 36 that the second rinsing process should be completed, the process proceeds to step 37, where a draining process is performed.

When the drainage process in step 37 is completed, water is supplied in step 38 until the input from the water level detecting means 24 reaches a fourth predetermined water level (for example, a water column of 35 mm). Thereafter, in step 39, the cleaning pump 5 and the heater 7
Is operated, and in step 40, it is determined from the conditions such as the time for operating the cleaning pump 5 and the water temperature whether or not the final rinsing step should be terminated.
Return to 9. If it is determined in step 40 that the final rinsing process should be completed, the process proceeds to step 41, where a drainage process is performed.

When the draining process in step 41 is completed, the heater 7 is operated in step 42. The drying time is determined in step 43, and the process returns to step 42 until the drying time has elapsed. If the drying time has elapsed in step 43, the process proceeds to step 44 and the operation is terminated.

As described above, according to the present embodiment, a large amount of water can be supplied in the washing step which foams with the detergent and requires a larger amount of water, and a smaller amount of water can be supplied in the rinsing step. Therefore, energy saving and time reduction can be realized.

Also, a large amount of water can be supplied in the first rinsing step in which more detergent components remain,
In the second rinsing step, a smaller amount of water can be supplied, and in the final rinsing step, a smaller amount of water can be supplied, so that more energy saving and shorter time can be realized.

In this embodiment, the rinsing process is performed three times, and the sequence without the pre-washing process is described. However, the presence or absence of the pre-cleaning process and the number of the rinsing process are merely examples. Can be obtained.

(Embodiment 2) As shown in FIG.
The tableware 2 is housed inside with the upper surface as an opening, and the washing water is stored at the bottom. The lid opening detecting means 14 is
4 is opened, and its output is input to the control means 45, as shown in FIG. 4, and the control means 45 determines whether the door 13 is open or closed.

The control device 46 controls the water supply valve 3, the washing pump 5, the heater 7, the drain pump 9, the blower fan 10 and the like to sequentially control the washing, rinsing and drying steps, as shown in FIG. It is configured as follows.

The control means 45 is constituted by a microcomputer and has a water supply duration measuring means 47 for measuring the water supply duration during water supply. The control means 45 is provided via the load control means 18 in accordance with the input set by the input means 48. The load of the water supply valve 3, the cleaning pump 5, the heater 7, the drain pump 9, the blower fan 10, and the like, the display means 49 for performing the display operation, and the notification means 20 for performing the notification operation are determined by a predetermined sequence and the water supply duration. Control is performed according to the measurement result of the measuring means 47.

As shown in FIG. 6, the input means 48 includes a power switch 48a for turning on / off the power, a start switch 48b for starting and temporarily stopping the operation, a course switch 48c for setting a course, and a water temperature for the final rinsing stroke. It comprises a rinse switch 48d, a low water pressure switch 48e for indicating a low water pressure environment, and the like.

The display means 49 comprises a light emitting diode, as shown in FIG. 6, a course display section 49a for displaying course contents, a rinsing display section 49b for displaying a final rinsing water temperature, presence / absence of a low water pressure environment. , And the like, and a low water pressure display section 49c for displaying.

The control means 45 supplies water until the water level detection means 6 detects a predetermined water level, and then supplies the water supply duration time.
7 so that the water supply is continued until the predetermined time is measured,
After water is supplied until the water level detecting means 6 detects a predetermined water level,
The predetermined time during which the water supply is continued is set to be longer in the washing step than in the rinsing step, and further, the first rinsing step is longer than the final rinsing step. Other configurations are the same as those in the first embodiment.

The operation of the above arrangement will be described with reference to FIG. In step 51, water is supplied until the input from the water level detecting means 6 reaches a predetermined water level.

In step 52, the cleaning pump 5
To work. In addition, in step 53, water is supplied until the input from the water level detecting means 6 reaches a predetermined water level. This means that after the water is supplied until the water level reaches the predetermined water level, the cleaning pump 5 is once operated to correct the water level that is lowered by wetting the dry dishes 2.

At step 54, continuous water supply is further performed.
In step 55, the low water pressure switch 48e of the input means 48
It is determined whether the low water pressure has been instructed. If the low water pressure has not been instructed, the continuous water supply time of step 54 is measured by the water supply continuation time measuring means 47 in step 56, and 9 seconds have elapsed. Judge. If less than 9 seconds,
It returns to step 54 and continues water supply. If 9 seconds have elapsed, the process proceeds to step 58.

If the low water pressure is instructed in step 55, the continuous water supply time in step 54 is measured in step 57 by the water supply continuation time measuring means 47, and it is determined whether 20 seconds have elapsed. If less than 20 seconds, step 5
Return to 4 and continue water supply. If 20 seconds have elapsed, the process proceeds to step 58.

In step 58, the cleaning pump 5 and the heater 7 are operated. In step 59, it is determined from the conditions such as the operating time of the cleaning pump 5 and the water temperature whether or not the cleaning process should be completed. If the cleaning process cannot be completed yet, the process returns to step 58. If it is determined in step 59 that the washing process should be completed, the process proceeds to step 60, where a drainage process is performed.

When the drainage process at step 60 is completed, water is supplied at step 61 until the input from the water level detecting means 6 reaches a predetermined water level. In step 62, continuous water supply is further performed. In step 63, the continuous water supply time in step 62 is measured by the water supply duration measuring means 47, and it is determined whether 5 seconds have elapsed. If the time is less than 5 seconds, the process returns to step 62 to continuously supply water. If 5 seconds have elapsed, the cleaning pump 5 and the heater 7 are operated in step 64.

In step 65, it is determined whether the first rinsing process should be completed based on conditions such as the time for operating the cleaning pump 5 and the water temperature. If the process cannot be completed yet, the process returns to step 64. If it is determined in step 65 that the first rinsing process should be completed, the process proceeds to step 66, where a drainage process is performed. When the drainage process in step 66 is completed, water is supplied in step 67 until the input from the water level detecting means 6 reaches a predetermined water level.

At step 68, continuous water supply is performed.
In step 69, the continuous water supply time in step 68 is measured by the water supply duration measuring means 47, and it is determined whether three seconds have elapsed. If the time is less than 3 seconds, the process returns to step 68 to continuously supply water. If 3 seconds have elapsed, the cleaning pump 5 and the heater 7 are operated in step 70. Step 71
Then, it is determined whether the second rinsing step should be completed based on conditions such as the time for operating the cleaning pump 5 and the water temperature. If the second rinsing step cannot be completed, the process returns to step 70. Step 71
If it is determined that the second rinsing process should be completed at
Proceeding to step 72, a drainage step is performed.

When the drainage process in step 72 is completed, water is supplied in step 73 until the input from the water level detecting means 6 reaches a predetermined water level. In step 74, the cleaning pump 5 and the heater 7 are operated. In step 75, it is determined from the conditions such as the time for operating the cleaning pump 5 and the water temperature whether the final rinsing process should be completed.
Return to step 74. If it is determined in step 75 that the final rinsing process should be completed, the process proceeds to step 76,
Perform drainage process.

When the drainage process in step 76 is completed, the heater 7 is operated in step 77. The drying time is determined in step 78, and the process returns to step 77 until the drying time has elapsed. If the drying time has elapsed in step 78, the process proceeds to step 79, and the operation ends.

As described above, according to the present embodiment, a large amount of water can be supplied in the washing step which foams with the detergent and requires a larger amount of water, and a smaller amount of water can be supplied in the rinsing step. Therefore, energy saving and time reduction can be realized.

Also, a large amount of water can be supplied in the first rinsing step in which more detergent components remain,
In the second rinsing step, a smaller amount of water can be supplied, and in the final rinsing step, a smaller amount of water can be supplied, so that more energy saving and shorter time can be realized.

In addition, by using a single water level detecting means for detecting a predetermined water level, an optimum water level can be set according to the stroke, and not only energy saving and time reduction can be realized at low cost, but also more Since a large amount of water can be supplied in the washing step requiring a large amount of water, and a smaller amount of water can be supplied in the rinsing step, energy saving and time reduction can be realized at low cost.

Further, even in a place where the water supply flow rate is extremely small,
It can be set to the expected water level.

In this embodiment, the rinsing process is performed three times, and the sequence without the pre-washing process is described. However, the presence or absence of the pre-washing process and the number of the rinsing processes are merely examples. Can be obtained.

Although the determination as to whether the water pressure is low is made only in the washing step, it is merely an example that the determination is made only in the washing step, and the same effect can be obtained even in the rinsing step.

In step 52, the cleaning pump 5 is set to 1
Although the operation is performed for 0 seconds, the operation of the cleaning pump 5 only wets the dried tableware 2.
The operation time is merely an example, and the same effect can be obtained even if it is not 10 seconds. The same effect can be obtained without operating the cleaning pump 5.

The water supply continuation time is described in step 56, step 57, step 63, and step 69, but this is merely an example, and the same effect can be obtained even if the time is different from that in this embodiment. it can.

The washing step, the first rinsing step,
Although the time of continuous water supply with the first rinsing step and the final rinsing step is shortened, even if the first rinsing step and the second rinsing step are made longer than the time of continuous water supply of the washing step, the effect of the present invention is obtained. Is not completely denied, but an effect can be expected.

(Embodiment 3) As shown in FIG. 9, the control device 80 controls the water supply valve 3, the washing pump 5, the heater 7, the drain pump 9, the blower fan 10 and the like to perform each of washing, rinsing and drying. The process is controlled sequentially, and is configured as shown in FIG.

The control means 81 is composed of a microcomputer, and includes a water supply continuation time measuring means 47 for measuring a water supply continuation time at the time of water supply and a water supply completion time measuring means (water supply continuation time measuring means) for measuring a time from the start of water supply to the completion of water supply. Flow rate detection means) 8
2 and the water supply flow rate can be determined by measuring the water supply completion time. Other configurations are the same as those in the first or second embodiment.

The operation of the above configuration will be described with reference to FIG. In step 84, water supply completion time measuring means 8
The measurement of 2 is started. At step 85, the water level detecting means 6
Water supply is performed until the input from the above reaches a predetermined water level. In step 86, the measurement of the water supply completion time is completed, and the water supply completion time is determined.

In step 87, continuous water supply is further performed.
In step 88, it is determined whether the water supply completion time measured by the water supply completion time measuring means is 45 seconds or more. If it is not 45 seconds or more, it is determined that the water pressure is not low, and in step 89, the continuous water supply time in step 87 is determined. Water supply duration measuring means 47
And it is determined whether 9 seconds have elapsed. If the time is less than 9 seconds, the process returns to step 87 to continuously supply water. If 9 seconds have elapsed, the process proceeds to step 91.

If the water supply completion time is 4
If it is longer than 5 seconds, it is determined that the water pressure is low, and
In step 87, the continuous water supply time in step 87 is measured by the water supply duration measuring means 47, and it is determined whether 12 seconds have elapsed. 1
If the time is less than 2 seconds, the process returns to step 87 to continuously supply water.
If 20 seconds have elapsed, the process proceeds to step 91.

Step 91 is the same as step 58 to step 79 in the second embodiment.

As described above, according to the present embodiment, after water is supplied until the water level detection means 6 detects the predetermined water level, the predetermined time for continuing the water supply can be varied according to the water supply flow rate.
The optimum water level can be obtained regardless of the water supply flow rate.

In this embodiment, the water supply flow rate detecting means is described by the water supply completion time measuring means 82, and the water supply flow rate is detected from the water supply completion time. However, the purpose is to detect the water supply flow rate. The same effect can be obtained by using a sensor that directly detects the flow rate or by using another detection method.

Further, although the water supply flow rate is only distinguished in two stages, this is merely an example, and the same effect can be obtained even if the water supply flow rate is discriminated more finely or the water supply continuation time is calculated from the water supply flow rate. .

Further, the determination of the water supply completion time is set to 45 seconds or more in step 88, but this is merely an example, and the same effect can be obtained even if the time is not 45 seconds.

Although the water supply continuation time is described in steps 89 and 90, this is merely an example, and the same effect can be obtained even if the time is different from that of the present embodiment.

[0077]

As described above, according to the first aspect of the present invention, there is provided a cleaning tank, water supply means for supplying water into the cleaning tank, and water level detecting means for detecting a water level in the cleaning tank. ,
Control means for sequentially controlling a series of operations, wherein the control means makes the water level of the washing step higher than any one of the rinsing steps which is repeated once or plural times, so that the detergent foams, Since a large amount of water can be supplied in a washing process that requires a large amount of water, and a smaller amount of water can be supplied in a rinsing process,
Energy saving and time reduction can be realized.

According to the second aspect of the present invention, the washing tank, water supply means for supplying water into the washing tank, water level detecting means for detecting a water level in the washing tank, and a series of operations are sequentially controlled. Control means for controlling the water level in the first rinsing step to be higher than the water level in the final rinsing step, so that more detergent components remain.
Since a large amount of water can be supplied in the second rinsing step, and a smaller amount of water can be supplied in the second and subsequent rinsing steps, energy saving and time reduction can be realized.

According to the third aspect of the present invention, since the control means lowers or equalizes the water level of the rinsing step repeated three or more times each time, the control means supplies a more optimal water amount. Therefore, energy saving and time reduction can be realized.

According to the fourth aspect of the present invention, the cleaning tank, the water supply means for supplying water into the cleaning tank, the water level detecting means for detecting the water level in the cleaning tank, and the time for which the water supply is continued. Water supply duration measuring means for measuring, and control means for sequentially controlling a series of operations, wherein the control means supplies water until the water level detecting means detects a predetermined water level, and then the water supply duration measuring means sets a predetermined time. Since the water supply is continued until the water level is measured, it is possible to use a water level detection unit that detects a single predetermined water level and set the optimum water level according to the stroke, thereby saving energy and reducing time and reducing cost. Can be realized.

According to the fifth aspect of the present invention, after the water is supplied until the water level detecting means detects the predetermined water level, the control means performs one or more of the washing steps for a predetermined time during which the water supply is continued. Since the length is made longer than any of the rinsing strokes repeated a number of times, it is possible to use a single water level detecting means for detecting a predetermined water level, and to supply a large amount of water in a washing process requiring a large amount of water. Since a smaller amount of water can be supplied in the rinsing process, energy saving and time reduction can be realized at low cost.

According to the invention described in claim 6, after the water is supplied until the water level detecting means detects the predetermined water level, the control means sets the predetermined time for continuing the water supply to the final rinsing stroke in the first rinsing stroke. Since it was made longer than the rinsing stroke, use a water level detection means to detect a single predetermined water level,
Since a large amount of water can be supplied in the first rinsing step in which more detergent components remain, and a smaller amount of water can be supplied in the second and subsequent rinsing steps,
Energy saving and time reduction can be realized.

According to the seventh aspect of the present invention, there is provided input means for performing an input operation, and the control means supplies water until the water level detecting means detects a predetermined water level, and then controls the predetermined time for continuing water supply. Since the switching can be performed by the input means, it is possible to set the expected water level even in a place where the supply water flow rate is extremely small.

According to the invention described in claim 8, the water supply flow rate detecting means is provided, and the control means sets the predetermined time for continuing the water supply after water is supplied until the water level detecting means detects the predetermined water level. Based on the detection result of the water supply flow rate detection means,
When the water supply flow rate is high, the predetermined time is short, and when the water supply flow rate is low, the predetermined time is lengthened.After supplying water until the water level detecting means detects the predetermined water level, the predetermined time for continuing water supply is determined according to the water supply flow rate. The optimum water level can be obtained regardless of the water supply flow rate.

[Brief description of the drawings]

FIG. 1 is a block circuit diagram of a dishwasher according to a first embodiment of the present invention.

FIG. 2 is a sectional view of the dishwasher.

FIG. 3 is an operation flowchart of the dishwasher.

FIG. 4 is a block circuit diagram of a dishwasher according to a second embodiment of the present invention.

FIG. 5 is a sectional view of the dishwasher.

FIG. 6 is an enlarged front view of an operation display unit of the dishwasher.

FIG. 7 is an operation flowchart of the dishwasher.

FIG. 8 is a block circuit diagram of a dishwasher according to a third embodiment of the present invention.

FIG. 9 is a sectional view of the dishwasher.

FIG. 10 is an operation flowchart of a main part of the dishwasher.

FIG. 11 is a block diagram of a conventional dishwasher.

FIG. 12 is a sectional view of the dishwasher.

FIG. 13 is an enlarged front view of an operation display unit of the dishwasher.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Washing tank 3 Water supply valve (water supply means) 22 Control means 24 Water level detection means

Continued on the front page (72) Inventor Wataru Hamaguchi 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. Katsuya Kadoya 1006 Kadoma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 3B082 DB02 DC01 DC02

Claims (8)

[Claims] A washing tank; water supply means for supplying water into the washing tank; water level detecting means for detecting a water level in the washing tank;
Control means for sequentially controlling a series of operations, wherein the control means makes the water level of the washing step higher than any one of the rinsing steps repeated one or more times. 2. A washing tank, water supply means for supplying water into the washing tank, water level detecting means for detecting a water level in the washing tank,
Control means for sequentially controlling a series of operations, wherein the control means makes the water level in the first rinsing stroke higher than the water level in the final rinsing stroke. 3. The dishwasher according to claim 2, wherein the control means lowers or equalizes the water level of the rinsing process repeated at least three times with each repetition. 4. A washing tank, water supply means for supplying water into the washing tank, water level detecting means for detecting a water level in the washing tank,
Water supply continuation time measuring means for measuring the time for which water supply is continued, and control means for sequentially controlling a series of operations, wherein the control means supplies water until the water level detection means detects a predetermined water level. A dishwasher in which water supply is continued until the duration measuring means measures a predetermined time. 5. The control means, after water is supplied until the water level detection means detects a predetermined water level, makes a predetermined time for continuing the water supply longer than one of the rinsing steps in the washing step repeated one or more times. 5. The dishwasher according to claim 4, wherein 6. The control means supplies water until the water level detection means detects a predetermined water level, and then sets a predetermined time for continuing water supply to be one.
6. The dishwasher according to claim 4, wherein the second rinsing step is longer than the final rinsing step. 7. An input means for performing an input operation, wherein the control means supplies water until the water level detection means detects a predetermined water level, and then switches a predetermined time for continuing water supply by the input means. Item 7. The dishwasher according to any one of Items 4 to 6. 8. A water supply flow rate detecting means, wherein the control means comprises:
After water is supplied until the water level detecting means detects a predetermined water level, a predetermined time for continuing water supply is determined based on the detection result of the water supply flow rate detecting means, when the water supply flow rate is high, the predetermined time is short, and when the water supply flow rate is low, the predetermined time is predetermined. The dishwasher according to any one of claims 4 to 7, wherein the time is lengthened.