JPS63288123A - Tableware washing dryer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a dish washer/dryer that heats and dries dishes washed with washing water sprayed from an arm nozzle or the like using a heater.

(b) Prior Art An example of this type of washer/dryer is disclosed in Japanese Utility Model Publication No. 16053/1983. Although this device allows the drying time to be arbitrarily selected, the heater always maintains the same heating level during the drying process, and cannot be used to dry dishes immediately.

In addition, if the heater capacity is simply increased so that the dishes can be dried quickly, the electric power will be cut off when the process takes a long time, and the dishes will be heated needlessly, making it difficult to take them out.

(c) Problems that the invention attempts to solve.

The present invention aims at speedy drying, eliminating wasted power, eliminating overheating of tableware, and making it possible to dry dishes according to desired conditions.

(d) Means for Solving the Problems The solution according to the present invention includes a stroke counter that can selectively set a long stroke time or a short stroke time by operating a change key, and a stroke counter that can be set manually, and a counter that can be used for counting. Further, the heating controller is configured to set the degree of heating by the heater to a high level during the short stroke time, and reduce the degree of heating by the heater to a low level 8 after the elapse of the short stroke time during the long stroke time.

(e) Operation The drying process time is adjusted to a desired time, but during the course of the drying process, for a predetermined short period of time from the start, the heater is not activated.
It is used as a "high strength" for quick drying work.

Furthermore, once this predetermined short time has elapsed, the heater is automatically switched to the so-called "medium" or "low" mode, reducing power consumption and
Overheating is suppressed.

(to) Examples To explain based on the drawings below, in Fig. 2 (1)
This is the main body of a Q-type dishwasher, with a door (2) that opens downwards at the front opening, and an FC septic tank (3) inside. A tableware basket (4) is placed in the middle of the washing tank (3) so that it can be taken in and out from the front opening. (5) is a mounting rail.

At the bottom of the tank (3), there is a /l for the tableware basket (4).
An arm nozzle (6) that rotates and injects cθ water and an arm nozzle (7) are arranged on the sheath, and a recess (9) with a removable filter (8) is formed at the bottom. be.

(10) is a water level detection means in the cleaning tank (3), which detects the cleaning water level by the vertical movement of the float.
In step 1), an abnormally high water level is detected by an abnormal water level switch (12). In addition, a thermistor (13) for detecting the water temperature in the tank is installed at the outer bottom of the cleaning tank (3), and a door switch notch (14) for detecting the opening and closing of the door (2) is also installed at the appropriate location. It is provided for.

(15) is the water supply pipe to the FTC septic tank (3) with the water supply valve (16), and (17) is the drain pump (1) from the recess (9).
8) is the drainage pipe, (19> is the washing pump that supplies washing water from the recess (9) to the arm and nozzle (6), sprays it and circulates it, and <20) is the drying air in the tank. This is a blower that will be patrolled.

A control box (21) with an operation surface is provided at the lower front of the main body (1), and the operation surface displays text and time for each step of hand washing, washing, rinsing, and drying, as shown in Figure 3. Display (minutes) and LED (22) corresponding to each stroke.
...and LEDs (23) corresponding to each course...
A drying process time change key (24), a course change key (25), and a start key (26) that also serves as a pause key.
) and a power switch (27). In addition, since the drying process can be changed to three types of time, LEDs <22> are arranged corresponding to each time. Also, each key <
24>, (25), and <26> are used to sequentially change or alternate the time, tooth, or stream start each time the operation is performed.

The control box (21) includes ROM and RAM.

A microcomputer (28
) (hereinafter referred to as a microcomputer) is incorporated, and its circuit diagram is shown in FIG. That is, the microcomputer (2B) controls the cleaning water level switch (11), the abnormal water level switch (12), the thermistor (13), and the door switch (1).
4) Input signals from each key (24), (25), and (26) to operate the sheathed heater (7), water supply valve (16), drain pump (18), cleaning pump (19), blower (20), L
Outputs operation No. 3 to ED (22)..., (23)... The microcomputer (28) also controls an AC solenoid (29) that opens the power switch (27) during opening.
It can be output to the buzzer (30). Furthermore, the microcomputer (28) includes overcurrent detection means (such as a current transformer) that detects locking of the cleaning pump (19).
31) Input the detection pretext.

Next, the control operation by the microcomputer (28) is
To explain based on the coachyard, the initial setting after turning on the power switch (27) is RAM (32).
, and recall and set the standard course and time from ROM<33>. After checking for disconnection of the thermistor (13), each operation of the course change key (25) and the drying time change key (24), which is accepted in a mode other than the prewash only course, is checked.

The temperature detected by the thermistor (13) is checked regardless of course changes or the operation of the start key (26).
4) When detecting a temperature of 80°C or higher, the power switch (27
) is turned off by the AC solenoid (29). This OFF operation can be done by turning the power switch (27) on once.
This is repeated at predetermined time intervals in consideration of the times when the OFF cannot be turned off, and the abnormality notification control unit (35)
E D (22), (23)... flashing and buzzer (3
The intermittent operation of 0) causes abnormality notification to be performed.

In addition, the abnormality notification in this embodiment depends on the number of LEDs in the focal area,
The types are changed to correspond to the abnormality content, and the user is informed of the abnormality content.

When the course and time are set and the start key (26) is operated, the freeze check flag is checked, and then the freeze control section (36) comprising a microcomputer 28) checks whether the temperature detected by the thermistor is 5° C. or lower.

If the temperature is below 5'C, the freezing control unit (36) interrupts the cleaning pump (19) and sets the 3 second counter (3 seconds) for 3 seconds to be processed.
37) is turned ON while counting, and the overcurrent detection means (31) detects whether an overflow occurs while the pump is ON during these 3 seconds.
Find out by. Immediately after the detection signal is output, the outputs of the drive system and heating system are set to 0FFL, and an abnormality notification is executed. Such a situation occurs when the pump (technique 9) locks up due to freezing, and upon detection, the course automatically stops.

If 3 seconds pass without detection of overflow, the freeze control unit (36) sets the pump (19) to 0FFL, sets the freeze check flag, and proceeds to the next step.If the detected temperature is not below 5°C. flag and proceed to the next step.

Thus, if the 2!111 check flag is set, each process of prewashing, washing, rinsing, and drying is executed by the process control unit (38) comprised of the microcomputer (28) according to the set course and time. (.

In each stroke, the water supply valve (16) is opened to supply water, and when the wash water level switch (11) trips, the wash water level flag is set and the abnormal water level switch (12) is tripped.
) trips, an abnormal water level flag is set. Further, when the door switch (14) detects that the door 2) is opened, a door flag is set.

Furthermore, if you press the start key (26) above,
A start flag is set, but this start flag is turned off by a stop operation and a running mini.

Then, when the set course time ends, the start flag disappears and the automatic power-off control unit (28) shown in Fig.
39). That is, when the start flag is turned off, the 10 minute counter (40) is allowed to start counting, and when the count increases, the AC solenoid (29) is activated and the power switch (27) is energized to turn off. This AC / light (29) l: versus t, -c
o, s seconds 0N-0, 5 seconds OFF.

Repeat energization/disconnection 10 times, and then turn on the 10 minute counter (40
), but if the first AC solenoid (29)
If the t-source switch (27) cannot be turned off due to the operation of
Turn off the power every 10 minutes until the power switch (27) is turned off. Make me urinate.

Also, the abnormal water level flag indicates that the abnormal water level switch (12) is set to 1.
It can be set up if it trips for more than a second, and in that case, the abnormal water level control section (41) consisting of a microcomputer (28)
performs the processing.

Figures 6 and 7 show a specific circuit of the current detection means (31) and a characteristic diagram of the comparison voltage (Vυ) based on the detected current. Measured with a current transformer (CT), smoothed, and comparator (CO
M) is compared with a predetermined excess level (0°C, L). The discharging time of the smoothing capacitor (C) is longer than the charging time, so if, for example, a child frequently operates the start key (26), the measurement level will quickly rise, and even in this case, an abnormality alarm can be transmitted to prevent mischief. You can teach what is being done.

The washing process in the designated (selected) course is explained in the flowchart of FIG. Here, after checking the numerical value (2) indicating the content of washing, first, the subroutine for checking the washing water level switch (11) shown in FIG. 9 is executed. Drainage control section (consisting of a microcomputer (28)
45) drives the drain pump (18) when the wash water level flag is set even though there is no water supply end flag.

In normal usage, cleaning water should not be included.
There is no wash water level flag (the wash water level switch (11) is on), but if you manually add water (hot water), the wash water level flag will come on. If the switch (11) is normal, the drain counter (46) is reset and the flag disappears by the time the drain counter (46) counts 30 seconds, and if it is abnormal, the flag remains. If it is normal, the pump (18) will be stopped, and if it is abnormal, the system output will be stopped.
We will inform you about it.

On the other hand, the water supply subroutine shown in Fig. 10 is executed by a microcomputer (
This can be executed by the water supply control unit (42) consisting of (28). Here, after checking the water supply end flag and wash water level flag, open the water supply valve (16) and check the addition contents of the water supply counter (43) 0 If there is no manual water supply (hot water), check the switch (11) Since 2 is not actually being performed, the wash water level flag is set at this point and the switch (11
) is being investigated. Water supply control section (
42) supplies water until 2 seconds after the plug is turned on, closes the water supply valve (16), and stops the water supply counter (43). In this way, if the flag is raised by the time the water supply counter (43) counts 2 minutes, the water supply end flag is raised.

However, since manual water supply (i%) is not performed many times during one operation, the contents of the counter (43) (
If the drainage abnormality counter (44) counts four or more times that the water supply time (water supply time) is within 10 seconds, this is determined to be a poor drainage condition, and the water supply control unit (42) issues an abnormality notification as a drainage abnormality. At the same time, system output is stopped. Furthermore, if the water supply counter (43) counts 2 minutes or more and the wash water level flag does not go up, the water supply control unit (42) notifies the switch (11) or the water supply system of an abnormality, and also turns on the water supply valve ( 16) and drive the drainage pump (18).

Stop other system outputs.

After checking the switch (11), water supply system, and drainage system, the temperature control section consisting of a microcomputer (28) checks the water temperature, sets the temperature lever and check flag, and if the water temperature is already 60°C or higher, Set the time saving flag.

The washing process control section (3rd day) first starts with the washing pump (19).
The water temperature is checked, and if it is not 60°C or higher, the heater (7) is energized, and if it is 60°C or higher, the heater (7) is turned off. However, once the water temperature reaches 60°C or higher,
Put up the temperature plug. In this way, the 12 minute counter (
When 47) counts, set the 12 minute elapsed flag and check the time reduction flag.If the 1 hour reduction flag is set (
(when the initial water temperature is 60℃ or higher), cleaning pump (1
9) and the heater (7) are stopped, the course content is changed to the number 3 indicating rinsing, and the drainage subroutine is executed.

On the other hand, if the initial water temperature is not 60°C or higher, and if the water temperature once reaches 60°C or higher and the reaching flag is set, an additional 1-minute counter (48
) counts up, the cleaning pump (19>) and the heater (7) are stopped.

Furthermore, if city water has been used as is from the beginning, 12
As long as the reaching flag does not go up after a minute has passed (as long as the water temperature has not reached 60°C or higher), the washing operation continues until the water temperature reaches 60°C or higher, and once the water temperature reaches 60°C or higher, the 1-minute counter (48) When the count up, the cleaning pump (19
) and the heater (7) stops.

Note that the degree of cleaning can be changed by changing the 1 minute counter (48) to a 10 minute counter or the like.

The next rinsing process is similar to the washing process and is performed twice.
1. The first time, the heater (7) is set to 0FFL, and the next time, the heater (7) is turned on and off, and the water at 70°C is used.

0N- of the heater (7) during the washing and rinsing steps
The OFF control is performed by the heater control section (49) comprised of a microcomputer (28) based on the flow chart shown in FIG. Check whether the temperature is 70°C (rinsing process) and 70°C (rinsing process), and if the temperature does not reach 70°C, press the counter 5 for 5 seconds.
0), but when it reaches the 5 second counter (4
9), and when the count increases, turn off the heater (7). Meanwhile, the heater (7) is OFF.
If the temperature is reached, the counter (50)
is cleared, but when the temperature drops, the counter (50) starts counting, and when the count increases, the heater (
7) Turn on. As a result, even if the temperature detected by the thermistor fluctuates or quickly changes in temperature, the heater (7) will not turn on.
, the OFF is delayed by 5 seconds (changeable), which can prevent other indoor air appliances, such as lamps, from flickering or tripping frequently.

In the next drying process, the drying process control section (38)
(20) and counter (5) when the setting is complete.
1), the heater (7) is controlled by the heating control section (52). That is, as shown in the flowchart of FIG. 12, the heating control unit (52) responds to the progress of the stroke time by increasing the temperature equivalent to 40OW (1:, -) when the setting is 15 minutes.
1 (7) for 10 seconds ON - 19 seconds 0FF), when set to 30 minutes, the next 15 minutes is equivalent to 300W (10 seconds 0N - 28
seconds○FF>, when setting 60 minutes, the last 30 minutes are 50W
The heater (7) is controlled so that the drying temperature is approximately 10 seconds ON - 220 seconds OFF. The drying temperature is set at 70°C.

In addition, the heating control unit (52) is configured so that the drying only course is specified.
, and sometimes the heater (7) is turned off during the time set by the counter (51).
is controlled by T equivalent to 300W (10 seconds 0N-28 seconds 0FF).

When the designated course ends, a buzzer (30) gives a notification that the course has ended.

(G) Effects of the Invention According to the present invention, since the degree of heating by the heater is automatically changed as time progresses, it is possible to achieve speedy drying work, reduction in power consumption, and ease of taking out drying tableware. , it is possible to provide a dish washer/dryer that is extremely easy to use.

[Brief explanation of drawings]

Fig. 1 is a control diagram of the dishwasher/dryer according to the present invention, Fig. 2 is an internal mechanism diagram, Fig. 3 is a front view of the operation panel, and Fig. 4 is for explaining the main operations of the whole. 5 is a flowchart for explaining the auto-puff-off operation, FIG. 6 is an electric circuit diagram of the overflow detection means, FIG. 7 is a characteristic diagram of comparison voltage based on detected current, and FIG. 8 , FIG. 9 and FIG. 10 are flowcharts for explaining the operation of the washing process, FIG. 11 is a flowchart for explaining the operation of the heater control, and FIG. 12 is a flowchart for explaining the operation of the drying process. be. (3)...Cleaning tank, (6)...Ar12 nozzle, (
7)... Heater, (11)... Cleaning water level switch, (Work 3)... Thermistor, (16)... Water supply valve,
(18)...Drain pump, (19)...Washing pump, (22), (23)...LED, (24)...
Drying time change key, (25)...Course change key, (
26)...Pause and start key, (27)...
TFI switch, (28)...My phone, (29)
...AC solenoid, (3o) ...Fuser-1 (31
)...pass flow detection means, (38)...stroke control section,
(51)...Drying process counter, (52)...Heating control section.

Claims (1)

[Claims] (1) In a device that heats and dries washed tableware using a heater, a process counter that can selectively set a long or short process time by operating a change key and counts the process time, and a process counter that counts while the process counter is counting. The tableware is characterized by comprising: a heating control unit that increases the degree of heating by the heater during the short stroke time, and decreases the degree of heating by the heater after the short stroke time has elapsed during the long stroke time. Washing dryer.