JPH10286212A - Dishwasher - Google Patents

Abstract

(57) [Problem] To provide a dishwasher / dryer which can be washed corresponding to tableware and equipment, and can be dried without deforming or discoloring even plastic or wooden tableware. SOLUTION: A first temperature sensor 6 for detecting a temperature of cleaning water and a temperature in a cleaning tank, a second temperature sensor 7 for detecting hot air discharged from an exhaust port of a main body, and emits a signal based on an operation. An operation board 20 for irradiating from the unit 26 and a main body substrate 30 having a light receiving unit 32 for receiving light and converting the light into a signal based on the operation board 20 are provided. Run. At the time of the drying step, the drying step is performed at least for a predetermined time. During that time, when the detected temperature of the second temperature sensor 7 exceeds the predetermined temperature, the drying step is immediately terminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher having a drying function, and more particularly to a control in a washing step and a drying step.

[0002]

2. Description of the Related Art Conventionally, this type of dishwasher / dryer is disclosed in, for example, JP-A-5-184517 and JP-A-1-268.
No. 532. The former is the first cleaning process.
And a second washing step. In the first washing step, the washing temperature is maintained at or below the denaturation temperature of the protein, and washing is performed before the protein stain starts to coagulate. In the second washing step, In addition, the cleaning temperature is higher than the first cleaning temperature and is higher than the melting point of the oil stain to wash the oil stain.

[0003] The latter uses a thermistor to detect the temperature of water accumulated in a recess provided in a washing tank during rinsing, and determines the drying process time based on the amount of change in the detected temperature.

[0004]

The above-mentioned conventional dishwashing and drying machine is used only for washing dishes such as bowls and dishes, and is used for appliances other than the dishes, such as a gotoku, a soup tray, a frying pan and a ventilation fan used in an electric microwave oven. It did not wash and dry the wings and the like.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and can be washed for each tableware and equipment. In the drying step, even if the tableware is made of plastic or wood, it is deformed or discolored. It is an object of the present invention to provide a dishwasher that dries in a short time, especially when the number of dishes is small.

[0006]

A dish washer-dryer according to the present invention comprises a first temperature sensor provided in a washing tank, a second temperature sensor provided near an exhaust port of a main body, and a washing machine. A washing pump that circulates water in the tank as washing water, a heater, a blower fan that blows air into the washing tank, an operation board provided on an upper side of the main body, a main body board provided on a side wall side of the main body, Signal transmitting means for connecting the operation board and the main body board, wherein the operation board discriminates the operation content based on a key operation, and when the operation content is dishwashing, it also indicates that it is a dishwasher; In the case of (1), there is provided an operation discriminator for transmitting the fact and an exhaust gas temperature monitor for measuring the exhaust gas temperature via the second temperature sensor and outputting a stop signal when the exhaust gas temperature exceeds a predetermined temperature. The main body substrate is used for washing the dishes. The temperature of the washing water is detected through the temperature sensor of the above, and the heater is controlled so that the temperature of the washing water falls within a first temperature range that is set in advance. The heater is controlled so as to fall within a second temperature range, and at the time of drying, the temperature in the cleaning tank is detected via the first temperature sensor, and the temperature in the cleaning tank is set to a third preset temperature. A heater control unit for controlling the heater so as to fall within the temperature range, and when dishwashing is selected, time measurement is started and operation of the washing pump is started, and the heater is turned off under the control of the heater control unit. When the measured time exceeds a first predetermined time, the operation of the cleaning pump is stopped, and when the device cleaning is selected, the operation of the cleaning pump is started. The heater first When the timer is turned off under the control of the heater control unit, the operation of the cleaning pump is stopped when the measured time passes a second predetermined time. A pump control unit and the operation of the blower fan are started together with starting time measurement when the drying process is started,
A blower fan control unit that stops the operation of the blower fan when the measured time exceeds a third predetermined time when the heater is turned off under the control of the heater control unit or when the stop signal is input; And

The heater control unit detects the temperature of the washing water via the first temperature sensor when washing the equipment.
The heater is controlled so that the washing water temperature falls within a second temperature range set in advance, and the washing pump control unit starts time measurement when equipment washing is selected, and starts washing the washing pump. When the operation is started and the heater is turned off under the control of the heater control unit, the measured time is set to a fourth time.
When the predetermined time elapses, the time measurement is started again. When the heater is turned off under the control of the heater control unit, the operation of the cleaning pump is stopped when the measured time elapses a fifth predetermined time. Things.

The operation board includes a key input detection unit that outputs a signal to the operation determination unit based on a key operation, and a display unit. The main body board outputs a signal based on the key operation. An input detection unit and an operation content are determined based on a signal from the main body key input detection unit or a signal input via the signal transmission unit, and the heater control unit, the cleaning pump control unit, and the air blower are determined based on a result of the operation. It is provided with a main body operation determining section for transmitting to the fan control section and a main body display section. The operation discriminator of the operation board displays the display content on the main body display side.

The signal transmission means includes a light emitting unit mounted on the operation board, a light receiving unit connected to the main board via a signal line, and housed in a light transmissive case provided on an outer wall of the cleaning tank. Consists of

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 is a block diagram of a dishwasher / dryer according to an embodiment of the present invention, FIG. 2 is a perspective view of the dishwasher / dryer according to the present embodiment, and FIG. 3 is a cross-sectional view of an operation unit containing an operation board. .

In FIG. 1, reference numerals 1 and 2 denote a dishwasher 40
A door switch for detecting the opening and closing of the door of the washing tank 3 is a washing tank 41
A water level sensor provided in the inside is installed at a position where an appropriate amount of water can be obtained for washing tableware and equipment other than tableware (for example, a gotoku used in an electric range, a juice receiver, a blade of a ventilation fan, etc.). Reference numeral 4 denotes an overflow sensor mounted in the washing tank 41 at a position higher than the water level sensor 3 for detecting the upper limit of the water level when the water level sensor 3 does not operate.

Reference numeral 5 denotes a water leak sensor disposed on a bottom plate (drain pan) of the dishwasher 40 for detecting water leakage in the dishwasher / dryer. Reference numeral 6 denotes a first temperature sensor provided in the washing tank 41. For example, it consists of a thermistor, and detects the temperature of the washing water in the washing step, and detects the temperature in the washing tank in the dish (equipment) drying step. Reference numeral 7 denotes a second attached to the vicinity of an exhaust port 44 of an exhaust pipe 42 provided above the cleaning tank 41.
The temperature sensor comprises, for example, a thermistor, and detects the temperature of the hot air discharged from the exhaust port 44 during the drying process (hereinafter referred to as “exhaust temperature”).

Reference numeral 8 denotes a main relay for opening and closing a power supply unit 37 of the main body substrate 30 and a commercial power supply supplied to each load described later.
9 is a heater for heating the washing water during the washing step and heating the inside of the washing tank 41 when entering the drying step, 10 is a water supply valve for opening and closing the water supply passage, and 11 is a drainage water for opening and closing the drainage passage. A valve, 12 is a drainage pump for sending out the washing water in the washing tank 41 to the drainage channel, 13 is a washing pump for circulating the water in the washing tank 41 as washing water, and 14 is a blower into the washing tank 41 during the drying process. These loads are connected to the load control unit 34 via a drive circuit (not shown) including, for example, a relay or a semiconductor element.

Reference numeral 20 denotes an operation board mounted on a board storage case 28a provided in the operation unit 28. A key input detection section 21 for outputting a signal based on a key operation of an operation panel 29, and an operation content from the input signal , For example, starting operation, selection of dishwashing or appliance cleaning according to the present invention, display switching,
The operation determination unit 22 that determines a temporary stop or the like and outputs an operation signal based on the result is compared with the exhaust temperature detected by the second temperature sensor 7 and a predetermined temperature, for example, 70 ° C. When the temperature exceeds 70 ° C., the cleaning tank 41
The operation content is determined based on the input of a signal from the exhaust temperature monitoring unit 23 that outputs a stop signal to stop the blower fan 14 by judging that the washing object (tableware or equipment) is dried and the operation determination unit 22. , A display control unit 24 that displays on the display unit 25, an infrared light emitting unit 26 that emits, for example, infrared light based on input of signals from the operation determining unit 22 and the exhaust gas temperature monitoring unit 23, and a power battery 27 of the board 20. It has.

When the operation determining unit 22 determines that the operation has been started by, for example, operating a key, the display control unit 24 displays a message indicating selection of tableware or appliance cleaning, and either one of them is selected by operating the key. At that time, the operation start signal corresponding to the selection is output to the infrared light emitting unit 26,
When the display switching is detected, the operation content displayed on the display unit 25 is switched and displayed on the main body display unit 36. In this case, only the main body display section 36 on the main board 30 side displays the information, in order to prevent the battery 27 on the operation board 20 from being consumed.

The infrared light emitting section 26 is composed of, for example, an LED, and the infrared light emitted from the LED is received by a light receiving portion attached to the side wall of the cleaning tank 41 via the substrate storage case 28a and the exhaust pipe 42 as shown in FIG. The light is irradiated to the light receiving section 32 in the case 45. The substrate storage case 28a, the exhaust pipe 42, and the light receiving case 45 are made of a member that transmits infrared rays.

Although the operation discriminating unit 22, the exhaust gas temperature monitoring unit 23 and the display control unit 24 provided on the operation board 20 are illustrated as being constituted by independent components,
These units may be constituted by, for example, one microcomputer.

Reference numeral 30 denotes a main body substrate, which is provided behind a main body operation panel 38 attached to a housing in front of the dishwasher 40 (see FIG. 2), and which outputs a signal based on a key operation of the operation panel 38. Main unit key input detection unit 31 to output
And the light receiving unit 32, which is composed of, for example, a phototransistor and converts into an electric signal based on the reception of infrared light, and the operation content (the tableware or appliance cleaning according to the present invention) A main body operation determining unit 33 that determines a start of operation, a pause, and the like accompanying selection, and outputs a corresponding signal; a load control unit 34 that operates based on a signal input from the main body operation determining unit 33; A main body display control section 35 for displaying operation contents on a main body display section 36 based on an output signal of the main body operation determination section 33;
7 is provided.

The load control unit 34 includes a heater control unit 34a, a cleaning pump control unit 34b, and a blower fan control unit 34c according to the present invention, and controls the load based on each of the washing, rinsing, and drying steps during operation. In the cleaning process,
When the dishwashing is selected, the operation is performed based on the flowchart shown in FIG. 4. When the appliance cleaning is selected, the operation is performed based on the flowchart shown in FIG. 5. It is designed to work based on it.

It has been described that the main body operation discriminating unit 32, the load control unit 34, and the main body display control unit 35 provided on the main body substrate 30 are constituted by independent components, respectively. These may be constituted by one microcomputer.

Next, the operation of the dishwasher according to this embodiment will be described. 4 is a flowchart illustrating the operation of the dishwashing process according to the present embodiment, FIG. 5 is a flowchart illustrating the operation of the device cleaning process according to the present embodiment, and FIG. 6 is a flowchart illustrating the operation of the drying process according to the present embodiment. is there. The water supply and drainage before and after the cleaning process are shown in FIG.
And a flowchart of FIG.

For example, when dishwashing is selected after the operation of starting operation through the operation panel 29 of the operation unit 28, the key input detection unit 21 outputs a signal based on the operation, and the operation determination unit 22 receives the input. The operation content is determined from the signal, and the corresponding operation signal is output to the infrared light emitting unit 26.
At this time, the display control unit 24 displays the operation content on the display unit 25 in accordance with the operation, and interrupts the display when the display switching is detected via the operation determination unit 22. At this time, the operation determining unit 22 displays the information on the main body display unit 36 side. The exhaust temperature monitoring unit 23 detects the exhaust port 44 when the power is turned on.
A nearby temperature is measured and compared with a predetermined temperature of 70 ° C.

On the other hand, the main body operation determining section 33 of the main body substrate 30
Detects the input of the operation signal via the light receiving unit 32,
The signal is output to the load control unit 34 for operation, and
When the display switching signal is input, the operation content is displayed on the main body display unit 36 via the main body display control unit 35. In addition,
When a key operation is performed on the main body operation panel 38 on the main body substrate 30 side, as described above, the main body operation determination unit 33 causes the main body display control unit 35 to display a message indicating that cleaning is selected,
When either one is selected, an operation start signal corresponding to the selection is output to the load control unit 34.

When the load control unit 34 detects a signal for starting operation based on the selection of dishwashing, it first enters a water supply step.
In that case, as shown in FIG.
Is opened and water is supplied into the cleaning tank 41 (S61), and monitoring of input of a signal from the water level sensor 3 is started (S62). When the input signal is detected, it is determined that the water in the cleaning tank 41 has reached the predetermined water level, and the water supply valve 10 is closed to terminate the water supply (S6).
3).

At this time, the cleaning pump controller 34b starts a timer (S11), and then drives the cleaning pump 13 to circulate the water in the cleaning tank 41 as cleaning water (S1).
2), the heater control unit 34a detects the water temperature in the cleaning tank 41 via the first temperature sensor 6 and compares it with the lower limit of the first temperature range, for example, 55 ° C. Since the water temperature is low at 55 ° C. or less at the beginning of the dishwashing, the heater 9 is energized (S14) to heat the cleaning water circulating in the cleaning tank 41, and the water temperature and the first temperature range Upper limit, for example, 6
Compare with 0 ° C. (S15). When the water temperature is higher than the upper limit value of 60 ° C., the power supply to the heater 9 is cut off (S16).
If the water temperature is 60 ° C. or lower, the current is compared with the lower limit of 55 ° C. while continuing to supply power to the heater 9 (S13). The operations from Step 13 to Step 15 are repeated until the temperature of the washing water exceeds the upper limit value of 60 ° C.

When the temperature of the washing water exceeds the upper limit of 60 ° C. due to the heating of the heater 9, the heater control unit 34a cuts off the power supply to the heater 9 (S16), and at this time, the washing pump control unit 34b measures the time of the timer. The time is a first predetermined time, for example, 2
It is determined whether 0 minutes have elapsed (S17). If 20 minutes have elapsed, the operation of the cleaning pump 13 is stopped (S18). If the time measured by the timer has not elapsed 20 minutes, the cleaning is performed. The operation of the pump 13 is continued. On the other hand, the heater control unit 34a determines that the water temperature is
° C, the heater 9 is kept off (S
13, S15, S16), before the time counted by the timer elapses 20 minutes, the water temperature drops due to natural heat radiation and the lower limit value 5
When the temperature falls below 5 ° C., the heater 9 is energized again to heat the cleaning water (S14), and is compared with the upper limit of 60 ° C. (S1).
5). At this time, when the water temperature is 60 ° C. or less, the lower limit is 55 ° C.
When the water temperature exceeds 60 ° C. due to the heating of the heater 9, the power supply to the heater 9 is cut off (S13).
16). At this time, the cleaning pump control unit 34b determines whether the timer has elapsed 20 minutes (S17). If the timer has not elapsed, the operation of the cleaning pump 13 is further continued. Is detected, the operation of the washing pump 13 is stopped (S18), the dishwashing step is ended, and the drainage step is started.

In this step, as shown in FIG.
First, the timer is started (S71), then the drain valve 11 on the drain is opened (S72), and the drain pump 12 is operated (S73) to drain the cleaning water in the cleaning tank 41. Then, it is determined whether or not the time counted by the timer has passed, for example, 1 minute (S74). When the time counted by the timer has passed 1 minute, the operation of the drain pump 12 is stopped (S75), and the drain pump 12 is opened. The drain valve 11 is closed (S76).

Next, the operation when the equipment cleaning is selected will be described with reference to the flowchart of FIG. When the water supply step is completed in the same manner as described above, first, the cleaning pump control unit 34b
Drives the cleaning pump 13 to circulate the water in the cleaning tank 41 as cleaning water (S21). At this time, the heater control unit 34a detects the water temperature in the cleaning tank 41 via the first temperature sensor 6, and detects the lower limit of the second temperature range, for example, 65.
C. (S22). The water temperature in the cleaning tank 41 is 65 ° C
Is exceeded, the current is compared with the upper limit of the second temperature range, for example, 70 ° C. without energizing the heater 9 (S2
4) When the water temperature is lower than 65 ° C., the heater 9 is energized (S23), and the cleaning water circulating in the cleaning tank 41 is heated and compared with the upper limit of 70 ° C. (S24). When the water temperature is higher than the upper limit 70 ° C., the power supply to the heater 9 is cut off (S25). When the water temperature is 70 ° C. or lower, the power supply to the heater 9 is continued and compared with the lower limit 65 ° C. again (S2).
2). As described above, the water temperature is set to the upper limit 70 of the second temperature range.
The operations from step 22 to step 24 are repeated until the temperature exceeds ℃, and the cleaning water is heated.

When the temperature of the washing water exceeds the upper limit value 70 ° C. due to the heating of the heater 9, the heater control section 34a cuts off the power supply to the heater 9 (S25), and the washing pump control section 34b starts the timer. It is determined whether or not the counted time has passed a second predetermined time, for example, 20 minutes (S2).
6, S27). At this time, the operation of the cleaning pump 13 is continued because it is less than 20 minutes. On the other hand, the heater control unit 34a
When the water temperature is equal to or higher than 65 ° C. and further exceeds 70 ° C., the heater 9 is kept off (S22, S24,
S25) Before the time counted by the timer elapses 20 minutes,
When the water temperature drops due to natural heat radiation and falls below the lower limit of 65 ° C., the heater 9 is energized again to heat the cleaning water (S
23), and compare with the upper limit of 70 ° C (S24). At this time,
When the water temperature is 70 ° C. or lower, the lower limit value is compared with 65 ° C. (S22). When the water temperature exceeds 70 ° C. due to the heating of the heater 9, the power supply to the heater 9 is cut off (S25). At this time, the cleaning pump controller 34b determines whether or not the timer has passed 20 minutes (S27). If the timer has not passed 20 minutes, the operation of the cleaning pump 13 is continued. When this is done, the operation of the cleaning pump 13 is stopped (S28), the device cleaning process is ended, and the drainage process shown in FIG. 9 is started.

When the drying process is started after the draining process, the blower fan control section 34c first starts a timer (S3).
1) Then, the blowing fan is operated to blow air into the cleaning tank 41 (S32). At this time, the heater control unit 34a detects the temperature in the cleaning tank 41 via the first temperature sensor 6,
Compare with the lower limit of the third temperature range, for example, 65 ° C. (S
33). At this time, since the temperature inside the cleaning tank is low and is 65 ° C. or less, the heater 9 is energized to heat the inside of the cleaning tank 41 (S
34) Then, the temperature in the cleaning tank is compared with the upper limit of the third temperature range, for example, 70 ° C. (S35). When the temperature in the cleaning tank is higher than the upper limit 70 ° C., the power supply to the heater 9 is cut off (S36). However, when the temperature in the cleaning tank is 70 ° C. or lower, the power supply to the heater 9 is continued while the lower limit 65 is maintained. C. (S34). Steps 33 to 35
The above operations are repeated until the temperature in the cleaning tank 41 exceeds the upper limit of 70 ° C.

When the temperature in the cleaning tank 41 exceeds the upper limit of 70 ° C. due to the heating of the heater 9, the heater control section 34a cuts off the power supply to the heater 9 (S36), and at this time, the blower fan control section 34c It is determined whether or not a stop signal has been input from the exhaust temperature monitoring unit 23 of the operation board 20 (S
37). This stop signal is output by the exhaust temperature monitoring unit 23 on the operation board 20 side as described above, and when the stop signal is detected, the exhaust temperature becomes the predetermined temperature 70 ° C.
The operation of the blower fan 14 is stopped without waiting for a third predetermined time, for example, 50 minutes, but the stop signal is input. If no detection was made, the time measured by
It is determined whether or not 0 minutes have elapsed (S38). If 50 minutes have elapsed, the operation of the blower fan 14 is stopped in the same manner as described above (S39), but the timer counts for 50 minutes. If not, the operation of the blower fan 14 is continued.

On the other hand, when the temperature in the cleaning tank is 65 ° C. or more and further exceeds 70 ° C., the heater control section 34a keeps the heater 9 off (S33, S35, S3).
6) If the temperature in the cleaning tank is reduced by the blowing of the blower fan 14 to a temperature lower than the lower limit of 65 ° C. before the time counted by the timer elapses 50 minutes, the heater 9 is energized again and the cleaning tank is energized. 41 is heated (S34) and compared with the upper limit of 70 ° C. (S35). At this time, when the temperature inside the cleaning tank is 70 ° C. or less, the lower limit value is compared with 65 ° C. (S33), but when the temperature inside the cleaning tank exceeds 70 ° C. due to heating of the heater 9, the power supply to the heater 9 is cut off. (S36). At this time, the blower fan control unit 34c determines whether a stop signal has been input (S37), and when the stop signal is detected, stops the operation of the blower fan 14 (S39). If the input of the signal is not detected, it is determined whether or not the time counted by the timer has passed 50 minutes (S38).
When 0 minute has not elapsed, the operation of the blower fan 14 is further continued. However, when 50 minutes have elapsed, the operation of the blower fan 14 is stopped (S39), and the drying process is terminated.

In the present embodiment, when the object to be washed is tableware, washing is performed according to a preset dishwashing process, and in the case of equipment, the washing is performed according to a preset device washing process and at a higher temperature than during dishwashing. I decided to wash it,
Equipment such as frying pans and blades of ventilation fans can be washed without being limited to tableware such as bowls and dishes, and the drying process is stopped immediately when the temperature in the washing tank 41 exceeds 70 ° C. Therefore, there is an effect that even plastic and wooden dishes can be dried without deformation or discoloration.

Also, the key operation can be performed from the main board, and the display on the operation board side can be displayed on the main board side, so that the operation can be arbitrarily selected and the display is switched to the main board side. In this case, there is an effect that battery consumption of the operation board can be suppressed.

Furthermore, since the signal from the operation board is transmitted to the main board using infrared rays, there is an effect that deterioration due to the use of electric wires and malfunction due to poor connection due to the use can be prevented.

Embodiment 2 FIG. Next, another embodiment of the device cleaning step will be described. FIG. 7 is a flowchart showing the operation of the device cleaning step according to another embodiment. In addition,
In the present embodiment, the configuration of the dishwasher / dryer is the same as that of the first embodiment, and will be described with reference to the block diagram of FIG.

The cleaning pump controller 34 in the present embodiment.
b, when the cleaning process is started, the timer is started and the operation of the cleaning pump 13 is started.
Detects the temperature of the washing water via the first temperature sensor 6,
The washing water temperature is set in a second temperature range (65 ° C. to
70.degree. C.).
When the heater 9 is turned off under the control of the heater control unit 34a, the cleaning pump control unit 34b restarts the timer when the timer counts the fourth predetermined time, for example, 20 minutes, and starts counting the time. Start, heater control unit 3
When the heater 9 is turned off by the control of 4a, the operation of the cleaning pump 13 is stopped when the measured time has passed a fifth predetermined time, for example, 10 minutes.

Next, the operation will be described with reference to the flowchart of FIG. Note that the water supply and drainage before and after the cleaning step have already been described, and a description thereof will be omitted. Load control unit 34
Detects the operation start signal based on the selection of the equipment washing, first, enters the water supply step. Then, when the water supply step is completed, as described above, the cleaning pump control unit 34b
The timer is started (S41), and then the cleaning pump 13
Is driven to circulate the water in the washing tank 41 as washing water (S42). In addition, the heater control unit 34 a
Is detected via the first temperature sensor 6 and compared with the lower limit value 65 ° C. of the second temperature range. At the beginning of the dishwashing, the water temperature is low and 65 ° C. or lower, so that the heater 9 is energized to heat the washing water in the washing tank 41 (S44), and the water temperature and the upper limit 70 of the second temperature range. And (C45). When the water temperature is higher than the upper limit 70 ° C., the power supply to the heater 9 is cut off (S46). When the water temperature is lower than 70 ° C., the power supply to the heater 9 is continued while the lower limit 65 is maintained.
C. (S43). The operations from step 43 to step 45 are repeated until the temperature of the washing water exceeds the upper limit value of 70 ° C.

When the temperature of the washing water exceeds the upper limit 70 ° C. due to the heating of the heater 9, the heater control unit 34a cuts off the power supply to the heater 9 (S46), and at this time, the washing pump control unit 34b measures the time of the timer. It is determined whether the time has passed the fourth predetermined time 20 minutes (S47). If the time has passed 20 minutes, the timer of the timer is cleared while the operation of the cleaning pump 13 is continued, and the time is again measured. Start timing (S
48, S49), when the time counted by the timer has not elapsed 20 minutes, the operation of the cleaning pump 13 is continued.

On the other hand, the heater control unit 34 a
If the temperature exceeds 70 ° C., and if the temperature exceeds 70 ° C., the heater 9
(S43, S45, S46), and if the water temperature drops due to natural heat radiation and falls below the lower limit of 65 ° C. before the time counted by the timer elapses 20 minutes, the heater 9 is energized again. And the cleaning water is heated (S44), and the upper limit 7
Compare with 0 ° C. (S45). At this time, when the water temperature is 70 ° C. or lower, the lower limit value is compared with 65 ° C. (S43). However, when the water temperature exceeds 70 ° C. due to heating of the heater 9, the power supply to the heater 9 is cut off (S46). At this time, the cleaning pump control unit 34b determines whether the timer has elapsed 20 minutes (S47). If the timer has not elapsed 20 minutes, the operation of the cleaning pump 13 is further continued. ,
The water temperature is compared with the lower limit of 65 ° C. while the heater is kept off (S47). When the cleaning pump control unit 34b detects that the time counted by the timer has exceeded 20 minutes when the heater is turned off, the time counted by the timer is cleared as described above, and time counting is started again (S48, S4).
9).

At this time, the heater control unit 34a determines that the water temperature is equal to or higher than the lower limit value 65 ° C. of the second temperature range and the upper limit value 70 ° C.
When the water temperature exceeds the upper limit of 70 ° C,
If the lower limit value is equal to or higher than 65 ° C., the off state of the heater 9 is continued (S50 to S53). On the other hand, the cleaning pump control unit 34b
Determines whether the time counted by the timer restarted has passed the fifth predetermined time 10 minutes when the heater 9 is off, and determines whether the heater control unit 34a Enters the comparison between the water temperature and the lower limit 65 ° C., and controls the heater 9 based on the result (S
50 to S53), when the heater 9 is off, the counted time is 1
When 0 minute has elapsed, the cleaning pump control unit 34b stops the operation of the cleaning pump 13.

In the other embodiment, since the equipment is washed twice, which is longer than the above-described equipment washing step, the effect that the oil stains attached to the frying pan, the blades, etc. can be surely washed. is there.

[0043]

As described above, according to the present invention, when the object to be washed is tableware, washing is performed according to a preset dishwashing process, and when the object is an appliance, washing is performed according to a preset device washing process, and further, dishwashing is performed. Because it was made to wash at a higher temperature than at the time of, the equipment such as the frying pan and the fan of the ventilation fan can be washed without being limited to the tableware such as the bowl and the dish. When the temperature exceeds a predetermined temperature, the operation is stopped immediately, or when the temperature does not exceed the predetermined temperature, the apparatus is operated for a third predetermined time, so that even plastic and wooden dishes are not deformed or discolored. It is possible to dry, and when the stored tableware is a small amount, it is possible to dry in a short time.

Further, since the equipment is washed twice, which is longer than the above-described equipment washing step, the effect of reliably removing oil stains attached to the frying pan, the blades, etc. is obtained.

Further, the display unit is provided on the main body substrate, and the keys can be operated, so that the operation can be arbitrarily selected.

Further, since the display on the operation board can be switched to the display on the main board, the effect of suppressing the battery consumption of the operation board can be obtained.

Further, since the signal from the operation board is converted into light and transmitted to the main board, the effect of preventing deterioration due to the use of electric wires and malfunction due to poor connection resulting therefrom can be obtained. ing.

[Brief description of the drawings]

FIG. 1 is a block diagram of a dishwasher / dryer according to an embodiment of the present invention.

FIG. 2 is a perspective view of the dishwasher / dryer according to the embodiment.

FIG. 3 is a sectional view of an operation unit in which an operation board is stored.

FIG. 4 is a flowchart showing an operation of a dishwashing step according to the embodiment.

FIG. 5 is a flowchart showing an operation of a device cleaning step according to the embodiment.

FIG. 6 is a flowchart showing an operation of a drying step according to the embodiment.

FIG. 7 is a flowchart showing an operation of a device cleaning step according to another embodiment.

FIG. 8 is a flowchart showing an operation of a water supply step.

FIG. 9 is a flowchart showing an operation of a drainage process.

[Explanation of symbols]

Reference Signs List 6 first temperature sensor 7 second temperature sensor 9 heater 13 cleaning pump 14 blower fan 20 operation board 22 operation determination unit 23 exhaust temperature monitoring unit 2
6 infrared light emitting section 30 main body board 32 light receiving section 3
3 main body operation determination unit 34a heater control unit 34b cleaning pump control unit 34c ventilation fan control unit.

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Mitsuhiro Okazaki 1728-1 Komaeda, Hanazono-cho, Osato-gun, Saitama Prefecture Mitsubishi Electric Home Equipment Co., Ltd.

Claims (5)

[Claims] A first temperature sensor provided in the cleaning tank, a second temperature sensor provided in the vicinity of an exhaust port of the main body, a cleaning pump for circulating water in the cleaning tank as cleaning water, A heater, a blower fan that blows air into the cleaning tank, an operation board provided on an upper side of the main body, a main body substrate provided on a side wall side of the main body, and signal transmission means for connecting the operation board and the main body substrate, The operation board discriminates the operation content based on the key operation, and when the operation content is dishwashing, to that effect, and when equipment other than tableware is washed, an operation discriminating unit that transmits the effect, An exhaust temperature monitoring unit that measures an exhaust gas temperature via a second temperature sensor and outputs a stop signal when the exhaust gas temperature exceeds a predetermined temperature. The temperature of the washing water is detected via the temperature sensor 1 The heater is controlled so that the purified water temperature falls within a first temperature range that is set in advance, and the heater is controlled such that the temperature of the cleaning water falls within a second temperature range that is set in advance during equipment cleaning. A heater control unit for detecting the temperature in the cleaning tank via the first temperature sensor during drying, and controlling the heater so that the temperature in the cleaning tank falls within a third temperature range set in advance; When the dishwashing is selected, time measurement is started and the operation of the washing pump is started, and when the heater is turned off under the control of the heater control unit, the measured time passes a first predetermined time. When the cleaning is performed, the operation of the cleaning pump is stopped, and when the device cleaning is selected, the operation of the cleaning pump is started. When the heater is first turned off under the control of the heater control unit, time measurement is started. And then A cleaning pump control unit for stopping the operation of the cleaning pump when the time measured by the heater is turned off under the control of the heater control unit and a second predetermined time has elapsed; At the same time as starting the timekeeping, the operation of the blower fan is started, and when the heater is turned off under the control of the heater control unit, the timed time exceeds a third predetermined time, or the stop signal is input. A dishwasher / dryer having a blower fan controller for stopping the operation of the blower fan. 2. The apparatus according to claim 1, wherein the heater controller detects the temperature of the cleaning water via the first temperature sensor during the cleaning of the appliance, so that the temperature of the cleaning water falls within a second temperature range set in advance. When the heater is controlled, the cleaning pump control unit starts time measurement when the device cleaning is selected and starts the operation of the cleaning pump, and when the heater is turned off under the control of the heater control unit. When the measured time exceeds a fourth predetermined time, the timer starts again, and when the measured time exceeds a fifth predetermined time when the heater is turned off under the control of the heater control unit, The dishwasher / dryer according to claim 1, wherein the operation of the washing pump is stopped. 3. The operation board includes a key input detection unit that outputs a signal to the operation determination unit based on a key operation, and a display unit, and the main body substrate outputs a signal based on the key operation. A main body key input detecting section, and an operation content is determined based on a signal from the main body key input detecting section or a signal input through the signal transmission means, and based on a result thereof, the heater control section, the cleaning pump control section The dishwasher / dryer according to claim 1, further comprising a main body operation determining unit that transmits the main body operation to the blower fan control unit, and a main body display unit. 4. The dishwasher / dryer according to claim 1, wherein the operation discriminator of the operation board displays a display content on the main body display side. 5. The signal transmitting means is connected to a light emitting unit mounted on the operation board and a main body board via a signal line, and receives a light received in a light transmissive case provided on an outer wall of the cleaning tank. 4. The method according to claim 1, further comprising:
Or the dishwasher / dryer according to 4.