JPH10328120A - Dish drier controlling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize effective sterilization and to prevent high power consumption by driving a heater heating air absorbed by a power blower to make hot air by the combination of half-wave energizing and full-wave energizing. SOLUTION: At the time of housing dishes, etc., in the dish housing or the cutting board housing case of a dish drier main body to start operation and setting a drying made by the mode selecting/starting switch 18a of an operation part, a drying time is set to drive the power blower 8. Then, the heater 9 is energized in a half-wave energizing state to start drying. After the lapse of a prescribed period, the heater 9 is made to be in a full-wave energizing state by an output changing means 24 to heat the inside of the dish housing and that in the cutting board housing case to be at a high temperature in an extremely short time. Then, after the lapse of a prescribed time, the heater 9 is made to be in the half-wave energizing state by the means 24 again. Then, after the lapse of a set time while repeating the full-wave and half-wave energizing states, a full drying process is finished.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dish dryer having means for blowing hot air, which is effective for drying and sanitizing dishes.

[0002]

2. Description of the Related Art FIGS. 33 to 39 show examples of a conventional tableware dryer. 33 and 34, the electric blower 8
The air sucked in from the air inlet 1a becomes warm air by the heating of the heater 9, and the hot air outlet 7 in the tableware storage 3 in which the tableware storage basket 10 is stored and in the cutting board storage case 4 in which the cutting board is stored. The tableware and the cutting board (not shown) which are respectively blown out and dried are dried, and go out of the machine through the exhaust port 2a of the lid 2. These electric blowers 8
The heater 9 is controlled by electric and electronic components provided on a substrate 6 attached to the back surface of the operation unit 5. FIG. 35 is an exemplary view of a switch prepared on the operation unit 5. Here, a switch 18a for selecting the drying mode and starting the drying, an "off" switch 18b for stopping the drying halfway, and a display lamp indicating the drying mode (20 minutes, 50 minutes, auto) set by the switch 18a. 19b, 19c and 19d are arranged. FIG.
FIG. 2 shows a circuit configuration diagram of main electric / electronic components formed on the substrate 6. FIG. 37 is a block circuit diagram showing a configuration of the inside of the microcomputer (hereinafter abbreviated as a microcomputer) 17 shown in FIG. The commercial power input from the power plug is rectified and smoothed by the diode 37, the resistor 38, the Zener diode 16, and the electrolytic capacitor 36, and the power is supplied to the microcomputer 17. The microcomputer 17 includes a switch 18, a display lamp 19, and a temperature detecting element 20.
Are connected respectively. A temperature fuse 11, a thermostat 12, and a heater 9 are connected to the commercial power supply line via a relay A40. Also, electric blower 8
Is connected via a relay B41, and the microcomputer 1
7 respectively. When the temperature (room temperature) of the environment where the product is used is high (for example, 35 ° C. or higher) or low (for example, 0 ° C. or lower), the temperature detecting element 20 is used.
Detects a situation that may interfere with the parts that make up the main body. Also, when the temperature in the tableware storage 3 or the cutting board storage case 4 changes suddenly during drying, regardless of the amount of tableware, etc. (for example, when used near a gas stove or when the intake / exhaust port is closed). Case). Microcomputer 1
7 / mode selection / start switch 18a connected to
Is pressed, the drying time is set by the timer setting means 21 and the start input determining means 22 which receives information on whether the main body and the environment to be used are normal from the temperature detecting element 20 and determines whether or not to start the drying. Drying is started. The CPU 23 energizes the electric blower control means 28 for driving the electric blower 8, the display lamp control means 27 for displaying the mode set by the operation section 5, and the heater 9 while counting down the set drying time. , Respectively.

Next, a conventional control method will be described with reference to FIGS. 38 and 39. FIG. 38 is a flowchart showing the operation of the microcomputer 17 from the start to the end of the drying.
Reference numeral 9 denotes an electric blower 8 driven by a command from a microcomputer 17, a heater 9, and display lamps 19 (19b, 19c, 1).
9d) and temperature transitions in the tableware storage 3 and the plate storage case 4. The operation starts with storing tableware to be dried in the tableware storage 3 or the cutting board storage case 4 of the tableware dryer 1 (S301). When the drying mode is set by the mode selection / start switch 18a of the operation unit 5 (S302), a drying time T corresponding to the mode is set (S303), and the electric blower 8 is set.
And display lamps of the set mode (19b, 19c,
19d) is driven and turned on (S304,
S305). Further, the heater 9 is energized to start drying (S306). The set drying time T is always counted down from the start of drying (S30).
7) When the countdown of the set time becomes 0,
The heater 9 and the electric blower 8 are turned off, and the drying is completed (S308 to 312). At this time, the temperatures in the tableware storage 3 and the cutting board storage case 4 change as shown in FIG.

[0004]

As shown in FIG. 39,
The temperature in the storage keeps rising until the end of the set drying time. Although the temperature at the time of the termination becomes the predetermined maximum temperature, conventionally, the temperature was relatively low at about 70 ° C., so that effective sterilization could not be performed. On the other hand, increasing the power capacity of the heater to raise the drying temperature increases power consumption, and also causes problems such as the damage to the dishes due to heat and the need to use expensive heat-resistant materials for the main body. . According to the present invention, the inside of the storage is shortened by energizing the heater with full-wave and half-wave while using a heater with high power consumption, or changing the number of revolutions of the motor while energizing the heater. By raising the temperature to have a disinfecting effect only for a time, both the above disinfecting and energy saving problems are solved simultaneously. In addition, since most bacteria are extinguished by exposing to high temperature for a very short time (for example, about 1 minute at 75 ° C.), it is sufficient to use a full-wave energization to raise the temperature inside the storage in a short time. ADVANTAGE OF THE INVENTION According to the control method of this invention, the tableware which is vulnerable to heat is also hardly damaged, and there is also an effect that the inside and outside parts of the main body can be made of a material having a relatively low heat-resistant temperature.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a tableware for heating air sucked by an electric blower with a heater to produce hot air, and blowing the warm air into the storage to dry the dishes in the storage. In the dryer control method, the heater is driven by a combination of half-wave energization and full-wave energization.

[0006] Initially, the heater is energized for a half-wave for a predetermined time, and thereafter energized for a full wave.

[0007] The full-wave energization is performed a plurality of times.

[0008] Initially, the heater is energized full-wave for a predetermined time, and thereafter energized for half-wave.

After the half-wave energization, full-wave energization is further performed a plurality of times.

[0010] Further, switching between full-wave energization and half-wave energization of the heater is performed using a temperature detecting element for detecting a temperature in the storage.

In addition, when the full-wave current is supplied, an indicator lamp indicating the operation is activated.

Another aspect of the present invention is a dish dryer in which air sucked by an electric blower is heated by a heater to generate hot air, and the hot air is blown into a storage to dry dishes in the storage. Control method, the electric blower is set to 10
It is driven by a combination of a 0% energized state and an energized state in which the energized amount is reduced by a certain amount from the 100% energized state.

[0013] Initially, the electric blower is operated for a predetermined period of time.
Driving is performed in a power-on state of 00%, and then the power-supply state is reduced by a certain amount.

In addition, the electric blower is driven a plurality of times with the amount of energization being reduced by a fixed amount.

Further, the electric blower is initially driven in an energized state in which the energized amount is reduced by a certain amount, and thereafter driven in a 100% energized state.

In addition, the electric blower is driven a plurality of times at the beginning in the energized state in which the energized amount is reduced by a certain amount.

Further, switching of the energized state of the electric blower is performed using a temperature detecting element for detecting a temperature in the storage.

Further, when the electric blower is driven in an energized state in which the energized amount of the electric blower is reduced by a certain amount, a display lamp for indicating the operation is operated.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION

First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. Note that the mechanical structure of the dish dryer of the first embodiment may be the same as that of the conventional example shown in FIGS. 33 and 34, and therefore the reference numerals used in those examples are used in the following description. FIG. 1 is a configuration diagram of main electric and electronic components formed on the substrate 6 according to the first embodiment, and FIG. 2 is a block circuit diagram showing the inside of the microcomputer 17 shown in FIG. The commercial power input from the power plug is diode 3
7, rectified and smoothed by the resistor 38, the Zener diode 16, and the electrolytic capacitor 36, and supplied to the microcomputer 17 as power. A switch 18, a display lamp 19 (19a, 19b, etc.), and a temperature detecting element 20 are connected to the microcomputer 17, respectively. The commercial power line is connected to a thermal fuse 11, a thermostat 12, and a heater 9 via a triac A13. Also, electric blower 8
Are connected via a triac B14, and are controlled and driven by the microcomputer 17 respectively. Here, FIG.
Shows the timing at which the triac A13 is fired (ON). The zero cross of the commercial power supply is detected by the zero cross detection circuit 15, and the rising and falling edges of the pulse obtained by the detection are used as a trigger to trigger the triac A1.
3 is driven. The temperature detecting element 20 is used when the temperature (room temperature) of the environment where the product is used is high (for example, 35 ° C. or higher)
Or, when the temperature is low (for example, 0 ° C. or less), a situation that may hinder the components constituting the main body 1 is detected.
Also, when the temperature in the tableware storage 3 or the cutting board storage case 4 changes suddenly during drying, regardless of the amount of tableware, etc. (for example, when used near a gas stove or when the intake / exhaust port is closed). Case).

When the mode selection / start switch 18a connected to the microcomputer 17 is pressed, the drying time is set by the timer setting means 21, and information as to whether or not the main body and the used temperature environment are normal is sent to the temperature detecting element. Start input determining means 22 for determining whether or not to start drying by receiving from
Starts drying. The CPU 23 reads the zero cross point of the commercial power supply detected by the zero cross detection circuit 15 and further sets the electric blower control means 28 for driving the electric blower 8 while counting down the set drying time. Display lamp control means 27 for displaying the mode, output changing means 24 for controlling full-wave and half-wave energization of heater 9, heater control means 25 for energizing heater 9 and full-wave energization of heater 9 High temperature indicator lamp 19a that blinks or lights only when
Are controlled respectively. FIG. 4 shows the voltage waveforms 30 and 31 applied to both ends of the heater 9 when the heater 9 is energized with respect to the input commercial power supply waveform 29 and the voltage applied to both ends of the motor when the electric blower 8 is energized. The voltage waveform 32 is shown. Here, the electric blower 8 is always in a full-wave energized state with 100 energized states. The heater 9 controls the triac A13 through the output changing means 24 and the heater control means 25 of the microcomputer 17 during the drying, so that the full-wave energized state 30 and the half-wave energized state 31 are realized, and a predetermined rating is achieved. In the heater 9 having power consumption, two power consumptions are obtained. FIG. 5 shows the operation unit 5a used in the present invention. The operation unit 5a includes a switch 18a for selecting a drying mode and starting drying, an "off" switch 18b for stopping drying halfway, and a switch 18
Display lamps 19b, 19c, 19d indicating the drying mode (20 minutes, 50 minutes, auto) set by a are arranged. The high temperature display lamp 19a blinks or lights up when the heater 9 is in a full-wave energized state.

Next, a first embodiment based on FIG. 6 and FIG.
1 shows a control method and an operation state of a tableware dryer according to the present invention. FIG.
7 is an operation flowchart of the microcomputer 17 from the start to the end of the drying. FIG. 7 shows the electric blower 8, the heater 9, and the display lamp 19b driven by the instruction of the microcomputer 17.
(Or 19c, 19d), the state of the high temperature display lamp 19a and the temperature transition in the tableware storage 3 and the cutting board storage case 4 are shown. First, tableware and the like are stored in the tableware storage 3 and the cutting board storage case 4 of the tableware dryer main body 1 to start the operation (S1), and the drying mode is set by the mode selection / start switch 18a of the operation unit 5a (S1). In S2), the drying time T corresponding to the mode is set (S3), the electric blower 8 is driven (S4), and the display lamp (any one of 19b, 19c and 19d) of the set mode is turned on (S4). S5). Further, the heater 9 is initially energized in the half-wave energized state 31 (S6), and drying starts. The half-wave energization of the heater 9 is obtained by driving the triac A13 using either the rising edge or the falling edge of the pulse obtained by the zero-cross detection circuit 15 as a trigger, and consumes half the power consumption when full-wave energization. Becomes The set drying time T is always counted down from the start of drying (S7). Predetermined time t
When 0 has elapsed (S8), the heater 9 is switched to the output changing means 2
4, the full-wave energization state 30 is set (S9), and the high temperature display lamp 19a blinks or lights up (S10). This state continues for a predetermined time t1 (S12). Full-wave conducting state 31
Drives the triac A13 using both the rising edge and the falling edge of the pulse obtained by the zero cross detection circuit 15 as a trigger. At this time, heater 9
Power consumption is twice as high as that when half-wave power is supplied, the temperature of the hot air blown out from the hot air outlet 7 is also increased, and the inside of the tableware storage 3 and the cutting board storage case 4 is heated in a very short time. To The high temperature is at least 75 ° C., preferably 75 ° C., in consideration of the fact that bacteria adhering to the tableware, chopping board, and the inner wall of the tableware storage 3 and the chopping board storage case 4 die at about 75 ° C. The temperature is preferably set so as to be maintained for one minute. When the predetermined time t1 has elapsed (S12), the heater 9 is again set to the half-wave energized state 31 by the output changing means 24 (S13), the high-temperature display lamp is turned off (S14), and the inside of the tableware storage 3 and the cutting board storage case. The temperature in 4 falls to a temperature substantially equal to that before the full-wave energized state, and is maintained at a predetermined temperature (for example, 70 ° C.). Further, when a predetermined time t2 elapses (S1
7), the heater 9 is again in the full-wave energized state 30 (S1).
8) The high temperature display lamp 19a also blinks or lights up at the same time (S19). The full-wave energization state 30 of the heater 9 continues for a predetermined time t3 (S22). This allows tableware storage 3
The temperature in the inner and cutting board storage case 4 reaches the above-mentioned high temperature in a very short time as in the case of t1. When the predetermined time t3 has elapsed, the heater 9 is again in the half-wave conduction state 31 (S23), and the high temperature display lamp 19a is also turned off (S2).
4). Thus, the mode selection / start switch 18
The drying time T set according to a (for example, T = 20 minutes)
The heater 9 has a half-wave energized state 31 and a full-wave energized state 3
“0” is repeated at a time period set in the microcomputer 17. When the set time T elapses (S16, S2
1, S26), heater 9, display lamp (19b, 19)
c, 19d), and the electric blower 8 is turned off, and the entire drying process ends (S28 to S30). FIG. 7 shows the operation of the dish dryer during this time. Note that time t0,
It is assumed that t1, t2, and t3 can be set to arbitrary values. For example, when the set time is 20 minutes, they are 7 minutes, respectively.
3 minutes, 5 minutes, 2 minutes, etc. Further, in this example, the full-wave energizing state 30 is repeated twice. However, when the long-time drying mode of 50 minutes shown in the operation unit 5a of FIG. If the state 30 is further repeated several times, the bacteria can be more effectively removed.

Embodiment 2 Embodiment 2 has the same circuit configuration as Embodiment 1, but the control method is different. Here, the control method and operation of the second embodiment will be described with reference to the operation flowchart of the microcomputer 17 in FIG. 8, the timing chart of various operations in FIG. The tableware is stored in the tableware storage 3 and the cutting board storage case 4 of the tableware dryer main body 1 to start the operation (S41), and the drying mode is set by the mode selection / start switch 18a of the operation unit 5a (S42). And the drying time T corresponding to the mode is set (S43), the electric blower 8 is driven (S44), and the display lamp (19) of the set mode is set.
b, 19c, or 19d) is lit (S4).
5). Further, the heater 9 is initially energized in the full-wave energized state 30 (S46), and the high temperature display lamp 19a blinks or lights up (S47), and the drying process starts. The full-wave energization of the heater 9 is obtained by driving the triac A13 using both the rising edge and the falling edge of the pulse obtained by the zero cross detection circuit 15 as a trigger. The set drying time T is always counted down from the start of drying (S48). During a predetermined time t0, the temperatures in the tableware storage 3 and the cutting board storage case 4 are rapidly increased so as to be at least 75 ° C. When the predetermined time t0 has elapsed (S49), the heater 9 is set to the half-wave energized state 31 by the output changing means 24 and the heater control means 25 (S50), and the high temperature display lamp is also turned off (S51).
As shown in FIG. 3, the half-wave energized state 31 of the heater 9 is achieved by driving the triac A13 using either the rising edge or the falling edge of the pulse obtained by the zero cross detection circuit 15 as a trigger. You. Until the set drying time T ends, the half-wave energized state 31 is continued (SS52, S53), during which the temperature is maintained at about 70 ° C. When the drying time T ends, the heater 9, the display lamp (any one of 19b, 19c, and 19d) and the electric blower 8 are turned off and the process ends (S54).
~ S56). The operation of the dish dryer during this time is as shown in FIG.

Next, as an application of the control method according to the second embodiment, an example in which full-wave energization is performed after half-wave energization will be described with reference to FIGS. FIG. 10 is an operation flowchart of the microcomputer 17, and FIG. 11 is a timing chart showing transition of the temperature of the dish dryer. As in the previous example, the tableware is stored in the tableware storage 3 and the cutting board storage case 4 of the tableware dryer main body 1 and the operation is started (S61). When the drying mode is set by the mode selection / start switch 18a of the operation unit 5a (S62), the drying time T corresponding to the mode is set (S63), and the electric blower 8 is driven (S6).
4) Display lamps of the set mode (19b, 19c,
19d) is lit (S65). Further, the heater 9 is energized in the full-wave energizing state 30 as shown in FIG. 4 (S66), and the high temperature display lamp 19a is turned on or off (S67), and the drying process starts. The full-wave energization of the heater 9 is obtained by driving the triac A13 using both the rising edge and the falling edge of the pulse obtained by the zero cross detection circuit 15 as a trigger. The set drying time T is always counted down from the start of drying (S68). Then, during a predetermined time t0, the temperatures in the tableware storage 3 and the cutting board storage case 4 are raised to at least 75 ° C. When the predetermined time t0 has elapsed (S69), the heater 9 enters the half-wave conduction state 31 (S70), and the high-temperature display lamp is also turned off (S71). Further, when a predetermined time t1 elapses (S7).
3) The heater 9 is in the full-wave energized state 30 (S7).
4), the high temperature display lamp 19a also flashes or lights up (S7).
5). The full-wave energization state 30 is obtained by driving the triac A13 using both the rising edge and the falling edge of the pulse obtained by the zero cross detection circuit 15 as a trigger. At this time, the power consumption of the heater 9 is twice as large as that at the time of half-wave energization, the temperature of the hot air blown out from the hot air outlet 7 is also increased, and the temperatures in the tableware storage 3 and the cutting board storage case 4 are reduced. At least 75 ° C in a very short time
Reach high temperatures. The full-wave conduction state 30 is maintained for a predetermined time t.
It continues for 2 (S77). Then, when the predetermined time t2 has elapsed (S77), the heater 9 is set to the half-wave energized state 31 by the output changing means 24 and the heater control means 25, and the high temperature display lamp 19a is also turned off (S79). As a result, the temperatures in the tableware storage 3 and the cutting board storage case 4 decrease to substantially the same temperature as before the full-wave energization state, and are maintained at a predetermined temperature (for example, 70 ° C.). Further, when a predetermined time t3 has elapsed (S82), the heater 9
Becomes the full-wave energized state 30 again (S83), and the high temperature display lamp 19a also blinks or lights up (S84). The full-wave energization state 30 of the heater 9 continues for a predetermined time t4 (S87). At this time, the temperature in the tableware storage 3 and the inside of the cutting board storage case 4 reach a high temperature (at least 75 ° C.) in a very short time as in the case of t2. When the predetermined time t4 has elapsed, the heater 9 enters the half-wave conduction state 31 (S8).
8) The high temperature display lamp 19a is also turned off (S89). Within the drying time T (for example, T = 20 minutes) set by the mode selection / start switch 18a, the half-wave energized state 31 and the full-wave energized state 30 of the heater 9 are switched at the period of the time set in the microcomputer 17. Repeated. When the set time T has elapsed (S81, S86, S91), the heater 9, the display lamp (any of 19b, 19c, and 19d) and the electric blower 8 are turned off, and the entire drying process ends (S92 to S94). ). The operation of the dish dryer during this time is as shown in FIG. Note that time t0, t1, t2,
t3 and t4 may be set to any desired values. Further, in this example, the full-wave energized state 30 of the heater is repeated three times. However, when a long-time drying mode such as 50 minutes is selected, the full-wave energized state 30 is further repeated several times. And more effectively remove bacteria.

Third Embodiment The third embodiment also has the same mechanical structure and circuit configuration as the first embodiment. As in the first embodiment, the air sucked from the air inlet 1a by the electric blower 8 provided in the dish dryer main body 1 becomes hot air by heating the heater 9, and the hot air outlet 7 causes the dish storage basket. The tableware 10 and the chopping board (not shown) which are blown out into the tableware storage 3 and the chopping board storage case 4 respectively are dried and exhausted from the exhaust port 2 a opened in the lid 2. Is done. The electric blower 8 and the heater 9 for drying dishes and cutting boards are controlled by electric and electronic components arranged on a substrate 6 attached to the back surface of the operation unit 5a. The microcomputer 17 includes a switch 18 and an indicator lamp 1.
9, temperature detecting elements 20 are connected respectively. The temperature detecting element 20 is provided at the temperature of the environment where the product is used (room temperature)
For example, when the temperature is high (for example, 35 ° C. or more) or low (for example, 0 ° C. or less), a situation that may hinder the components constituting the main body 1 is detected. In addition, during the drying, regardless of the amount of tableware, etc., the cutting board storage case 4 in the tableware storage 3
This is for the purpose of detecting a case where the temperature in the inside has changed abruptly (for example, a case where it is used near a gas stove or a case where the intake / exhaust port is closed). During the drying, the value of the temperature detecting element 20 (voltage value to be read by the microcomputer 17) with the rise in the temperature in the tableware storage 3 and the cutting board storage case 4
Rise together. Here, the voltage value of the temperature detecting element 20 when the temperature in the refrigerator is 75 ° C. or more, for example, 77 ° C., is set in the microcomputer, and when the temperature detecting element 20 detects the set value, the heater 9 is turned on. The state 30 is switched to the half-wave conduction state 31.

When the mode selection / start switch 18a connected to the microcomputer 17 is pressed, the drying time is set by the timer setting means 21, and the start input judgment means for judging whether or not the main body and the used environment are normal. Drying is started by 22. The CPU 23 reads the zero cross point of the commercial power supply detected by the zero cross detection circuit 15, and further counts down the set drying time while controlling the electric blower control means 28 for driving the electric blower 8 and the operation unit 5a. The display lamp control means 27 for displaying the mode set in the above, the output changing means 24 for controlling the full-wave and half-wave energization of the heater 9, the heater control means 25 for energizing the heater 9, and the full-wave The high temperature display lamp control means 26 for controlling the high temperature display lamp 19a which blinks only when the power is turned on is controlled.

Next, a control method and operation according to the third embodiment will be described with reference to FIGS. FIG. 12 is a flowchart of the operation of the microcomputer 17 from the start to the end of the drying. FIG. 13 is an electric blower 8, a heater 9, and a display lamp 19b driven by a command from the microcomputer 17.
(Or 19c, 19d), the state of the high temperature display lamp 19a and the temperature transition in the tableware storage 3 and the cutting board storage case 4 are shown. First, tableware is stored in the tableware storage 3 and the cutting board storage case 4 of the tableware dryer main body 1 and operation is started (S201), and the drying mode is set by the mode selection / start switch 18a of the operation unit 5 ( S202),
A drying time T corresponding to the mode is set (S20).
3) The electric blower 8 is driven (S204), and the display lamp (any one of 19b, 19c and 19d) in the set mode is turned on (S205). Further, the heater 9
Power is supplied in the half-wave power supply state 31 (S206), and drying starts. The half-wave energization of the heater 9 is obtained by driving the triac A13 using either the rising edge or the falling edge of the pulse obtained by the zero cross detection circuit 15 as a trigger as shown in FIG. It consumes half the power of the time. The set drying time T is always counted down from the start of drying (S207). When the predetermined time t0 has elapsed (S208), the heater 9 is set to the full-wave energized state 30 by the output changing means 24 and the heater control means 25 (S2).
09), the high temperature display lamp 19a is also blinked or turned on at the same time (S210). The full-wave energization state 31 is triggered by a triac A triggered by both a rising edge and a falling edge of a pulse obtained by the zero cross detection circuit 15.
13 is obtained. At this time, the power consumption of the heater 9 is twice as large as that at the time of half-wave energization, the temperature of the hot air blown out from the hot air outlet 7 is also increased, and the temperature in the tableware storage 3 and the cutting board storage case 4 is reduced. Reach high temperatures in a very short time. Heater 9 full-wave energized state 30
Is the temperature set in the microcomputer 17 (here, 77 ° C.)
Until it reaches. When the temperature in the tableware storage 3 and the cutting board storage case 4 reaches 77 ° C., the temperature detecting element 2
0 (S212), the heater 9 is set to the half-wave energized state 31 by the output changing means 24 and the heater control means 25 (S213), and the high-temperature indicator lamp (S213).
214) is also turned off. As a result, the temperatures in the tableware storage 3 and the cutting board storage case 4 decrease to substantially the same temperature as before the full-wave energized state, and reach a predetermined temperature, for example, 70 ° C.
Continue at ℃. Further, when the predetermined time t1 has elapsed (S217), the heater 9 is again in the full-wave energized state 30 (S218), and the high-temperature display lamp 19a blinks or lights up at the same time (S219). The full-wave energization state 30 of the heater 9 continues until the temperature in the tableware storage 3 and the cutting board storage case 4 detected by the temperature detection element 20 reaches the temperature set in the microcomputer 17 in the same manner as described above. Is performed (S222). At this time, the temperatures in the tableware storage 3 and the cutting board storage case 4 reach the set temperature in a very short time. When this temperature is reached, the heater 9 is again in the half-wave energized state 31 (S223), and the high temperature display lamp 19a is also turned off (S224). As described above, the half-wave energized state 31 and the full-wave energized state 30 of the heater 9 are set to the microcomputer 17 within the set drying time T (for example, T = 20 minutes) by the mode selection / start switch 18a. It repeats in the cycle of whether the time and temperature reached. When the set time T elapses (S216, S2
21, S226), heater 9, display lamp (19b,
19c or 19d) and the electric blower 8 is OF
F, the entire drying process is completed (S227 to S22).
9). FIG. 13 shows the operation of the dish dryer during this time.
The times t0 and t1 and the temperature set in the microcomputer may be set to any desired values. Further, in this example, the full-wave energizing state 30 is repeated twice, but when a long-time drying mode such as 50 minutes is selected, the full-wave energizing state 30 is further repeated several times. Bacteria can be effectively removed.

The energization control of the heater using the time and the temperature in the storage chamber shown in the third embodiment is shown in FIG.
4 based on the control shown in FIG.
6 can be applied to obtain the operation pattern shown in FIG. 17 by the control shown in FIG.

Embodiment 4 The mechanical structure, circuit configuration and the like of Embodiment 4 are basically the same as those of Embodiment 1, but the block circuit diagram of FIG. 2 is replaced with the block circuit diagram of FIG. In FIG.
The timing at which the triac B14 connected to the electric blower 8 is fired (ON) is shown. As can be seen from FIG. 19, the triac B14 is driven by detecting the zero cross of the commercial power supply by the zero cross detection circuit 15, and using the rising and falling edges of the obtained pulse as a trigger. At this time, the electric blower 8 is in the 100% energized state 48 and has the highest rotational speed (left half in FIG. 19). Also, by triggering at a certain time (several ms) from the rising and falling edges, it is possible to reduce a certain amount of energization from the 100% energization state. In other words, the number of rotations of the electric blower 8 can be reduced by a certain number (the right half in FIG. 19). In the following description, this 1
An energized state in which the energized amount is reduced by a certain amount from the 00% energized state is referred to as a 70% energized state.

When the mode selection / start switch 18a connected to the microcomputer 17 is pressed, the drying time is set by the timer setting means 21, and information as to whether or not the main body and the used temperature environment are normal is sent to the temperature detecting element. Start input determining means 22 for determining whether or not to start drying by receiving from
Starts drying. The CPU 23 reads the zero crossing point of the commercial power detected by the zero crossing detection circuit 15 and further sets the heater control means 25 for driving the heater 9 while counting down the set drying time. Display lamp control means 27 for displaying the set mode, output changing means 24a for controlling the 100% and 70% energized state of the electric blower 8, electric blower control means 28 for energizing the electric blower 8, and electric blower 8 Respectively control the high-temperature display lamp control means 26 for controlling the high-temperature display lamp 19a which blinks or lights up only when 70% is in the energized state. FIG.
Is a voltage waveform 30 applied to both ends of the heater 9 when the heater 9 is energized with respect to the input commercial power supply waveform 29, and a voltage waveform applied to both ends of the motor when the electric blower 8 is energized. 48 and 49 are shown. Here, the heater 9 is always in a full-wave energized state. on the other hand,
The electric blower 8 controls the TRIAC B14 (phase control) through the output changing means 24a of the microcomputer 17 and the electric blower control means 28 during drying, so that 100%
In the electric blower 8 having two states of the energized state 48 and the 70% energized state 49 and having a predetermined rated rotation speed,
Obtain two revolutions.

Next, a control method and operation of the fourth embodiment will be described with reference to FIGS. 21 and 22. FIG. 21 is a flowchart of the operation of the microcomputer 17 from the start to the end of the drying. FIG. 22 is a flowchart showing the operation of the electric blower 8, the heater 9, and the display lamps (19b, 19).
c, 19d), the state of the high-temperature indicator lamp 19a, and the temperature transition in the tableware storage 3 and the cutting board storage case 4. The tableware is stored in the tableware storage 3 and the cutting board storage case 4 of the tableware dryer main body 1 and the operation is started (S4).
01), mode selection / start switch 1 of operation unit 5a
When the drying mode is set in 8a (S402), the drying time T corresponding to the mode is set (S403), and the electric blower 8 is driven in the 100% energized state 48 (S40).
4), display lamps for the set mode (19b, 19)
(c, 19d) is driven (S405).
Further, the heater 9 is energized in the full-wave energized state 30 as shown in FIG. 20 (S406), and drying starts. The 100% energized state of the electric blower 8 corresponds to the zero cross detection circuit 1
5 can be obtained by driving the triac B14 with both the rising edge and the falling edge of the pulse obtained as a trigger. Also, the set drying time T is always counted down from the start of drying (S
407). When the predetermined time t0 has elapsed (S408), the electric blower 8 is set to the 70% energized state 49 by the output changing means 24a and the electric blower control means 28 (S40).
9) The high temperature display lamp also flashes or lights up (S41).
0), which lasts for a predetermined time t1 (S412). 70%
The energized state 49 is obtained by driving the triac B14 with a slight delay, using either the rising edge or the falling edge of the pulse obtained by the zero cross detection circuit 15 as a trigger. At this time, the rotation speed of the electric blower 8 is lower than that in the 100% energized state. Thereby, the amount of the warmed air in the tableware storage 3 and the cutting board storage case 4 released to the outside of the main body 1 from the exhaust port 2a is reduced, and the temperature in the tableware storage 3 and the cutting board storage case 4 is reduced. Reach a high temperature (set to at least 75 ° C., eg 77 ° C.) in a very short time. When the predetermined time t1 has elapsed (S412), the electric blower 8 is again set to 1 by the output varying means 24a and the electric blower control means 28.
Then, the temperature in the tableware storage 3 and the cutting board storage case 4 falls to a temperature substantially equal to that before the 70% power is supplied, and the high temperature display lamp is turned off (S413). S414), and is continued at a predetermined temperature (for example, 70 ° C.). Further, when a predetermined time t2 elapses (S4
17), the electric blower 8 is again in the 70% energized state 49 (S418), and the high temperature display lamp 19a is also blinked or lit at the same time (S419). The 70% energized state 49 of the electric blower 8 is continued until a predetermined time t3 elapses (S
422). Then, the temperature in the tableware storage 3 and the cutting board storage case at this time reaches a high temperature (at least 75 ° C.) in a very short time as in the case of t1. When the predetermined time t3 has elapsed, the electric blower 8 is again in the 100% energized state 48 (S423), and the high temperature display lamp 19a is also turned off (S424). As described above, the drying time T (for example, T =
Within 20 minutes), the 100% energized state 48 and the 70% energized state 49 of the electric blower 8 are repeated at a period of time set in the microcomputer 17. When the set time T has elapsed (S416, S421, S426), the heater 9, the display lamp (any of 19b, 19c, and 19d) and the electric blower 8 are turned off, and the entire drying process ends (S4).
27-S429). The operation of the dish dryer during this time is shown in FIG.
become that way. It should be noted that the time t0, t1, t2, t3 and the actual energization amount in the state described as 70% energization state for convenience may be set to any desired value. Also, in this example, the 70% energized state 49 was repeated twice, but if a long-time drying mode of, for example, 50 minutes was selected, this can be repeated several times to more effectively remove bacteria. it can.

As an application of the fourth embodiment, FIG.
A pattern for obtaining the operation shown in FIG. 24 by the control method shown in FIG.
A pattern for obtaining the operation shown in FIG. 26 by the control method shown in FIG. 25 can also be implemented.

Fifth Embodiment The fifth embodiment is the same as the fourth embodiment in mechanical structure and circuit configuration, and differs only in the control method. In the fifth embodiment, the voltage value of the temperature detecting element 20 when the temperature inside the refrigerator is 75 ° C. or higher, for example, 77 ° C., is set in the microcomputer, and the temperature detecting element 20 detects the set value. Then, the electric blower 8 is switched from the 70% energized state 48 to the 100% energized state 49.

The control method and operation of the fifth embodiment will be described with reference to FIGS. 27 and 28. FIG. 27 is a flowchart showing the operation of the microcomputer 17 from the start to the end of the drying. FIG. 28 is a flowchart showing the operation of the electric blower 8, the heater 9, and the display lamps (19b, 19c, 19) driven by the control of FIG.
d), the state of the high-temperature display lamp 19a, and the temperature transition in the tableware storage 3 and the cutting board storage case 4. The tableware is stored in the tableware storage 3 and the cutting board storage case 4 of the tableware dryer main body 1 to start the operation (S501), and the drying mode is set by the mode selection / start switch 18a of the operation unit 5a (S502). And a drying time T corresponding to the mode (S503), and the electric blower 8
It is driven in the 0% energized state (S504), and the display lamp of the set mode (any one of 19b, 19c and 19d)
Is turned on (S505). Further, the heater 9 is energized in the full-wave energized state 30 (S506), and drying starts. As shown in FIG. 19, the 100% energized state of the electric blower 8 is obtained by driving the triac B14 using both the rising edge and the falling edge of the pulse obtained by the zero cross detection circuit 15 as a trigger. . Further, the set drying time T is always counted down from the start of drying (S507). Predetermined time t
When 0 has elapsed (S508), the electric blower 8 is set to the 70% energized state 49 by the output changing means 24 and the electric blower control means 28 (S509), and the high temperature display lamp 19a.
Flashes or lights up (S510). 70% energized state 4
9 is obtained by driving the triac B14 with both the rising edge and the falling edge of the pulse obtained by the zero-cross detection circuit 15 as a trigger but with a slight delay. At this time, the rotation speed of the electric blower 8 becomes , Falls below 100%. Thereby, the discharge of the warmed air in the tableware storage 3 and the cutting board storage case 4 from the exhaust port 2a to the outside of the main body 1 is reduced, and the temperature in the tableware storage 3 and the cutting board storage case 4 becomes extremely small. A high temperature (at least 75 ° C.) is reached in a short time. 70% of electric blower 8
The energized state 49 is determined by the temperature detection element 20 by the microcomputer 17.
(In this case, 77 ° C.). When the temperature inside the tableware storage 3 and the inside of the cutting board storage case 4 reaches the set temperature and the temperature detecting element 20 detects it (S512), the electric blower 8 outputs the output changing means 2
4 and the electric blower control means 28 are set to the 100% energized state 48 (S513), and the high temperature indicator lamp (S514).
Is also turned off, and the temperatures in the tableware storage 3 and the cutting board storage case 4 are reduced to a temperature substantially equal to that before the 70% energized state, and maintained at a predetermined temperature (for example, 70 ° C.). When the predetermined time t1 further elapses (S517), the electric blower 8 returns to the 70% energized state 49 again (S51).
8), the high temperature display lamp 19a also flashes or lights up (S
519). When the electric blower 8 is in the 70% energized state 49, the temperature in the tableware storage 3 and the cutting board storage case 4 is controlled by the microcomputer 1.
7 until the temperature set to 7 is reached (S52).
2). Thereby, the temperature in the tableware storage 3 and the inside of the cutting board storage case 4 can be increased to a high temperature (at least 7
5 ° C). Then, when the temperature reaches the set temperature, the temperature detection element 20 detects the temperature, whereby the electric blower 8 is again in the 100% energized state 48 (S523),
The high temperature display lamp 19a is also turned off (S524). Within the drying time T (for example, T = 20 minutes) set by the mode selection / start switch 18a, 10
The 0% energized state 48 and the 70% energized state 49 are repeated in a cycle of determining whether the time and temperature set in the microcomputer 17 have been reached, respectively. When the set time T elapses (S516, S521, S526), the heater 9,
The display lamp (any one of 19b, 19c, and 19d) and the electric blower 8 are turned off, and the entire drying process ends (S527 to S529). The operation of the dish dryer during this time is represented by FIG. The times t0 and t1, the temperature set for the microcomputer, and the actual energization amount in the state described as 70% energization state for convenience may be set to any desired values. Also, in this example, the 70% energized state 49 was repeated twice, but if a long-time drying mode of, for example, 50 minutes was selected, this can be repeated several times to more effectively remove bacteria. it can.

As an application of the fifth embodiment, FIG.
A pattern for obtaining the operation shown in FIG. 30 by the control method shown in FIG.
It is also possible to implement a pattern or the like for obtaining the operation shown in FIG. 32 by the control method shown in FIG.

[0035]

According to the first aspect of the present invention, it is possible to simultaneously reduce power consumption and remove bacteria in the storage while using a heater with high power consumption. In addition, the time during which the inside of the storage is hot can be reduced to a very short time,
There is no need to use a member that constitutes the dish dryer, which can withstand a special high temperature.

According to the second aspect of the present invention, the time for raising the temperature of the heater by full-wave energization is short, and it is possible to simultaneously achieve the power saving and the sterilization effect.

According to the third aspect of the invention, by intermittently repeating the full-wave energization of the heater, it is possible to effectively reduce power consumption and effectively remove bacteria in the storage.

According to the fourth aspect of the present invention, the heater is driven by full-wave energization immediately after the start of drying to realize a high temperature, so that drying is performed when a lot of moisture and bacteria adhere to the stored tableware. -By accelerating the disinfection and lowering the temperature to a normal temperature by the latter half-wave energization and drying, the total drying time can be reduced and effective disinfection can be achieved.

According to the fifth aspect of the present invention, since the temperature is increased intermittently several times by full-wave energization of the heater, it is possible to surely remove bacteria while saving power consumption and to shorten the drying time.

According to the sixth aspect of the present invention, the temperature detection at the time of high temperature is performed by the temperature detecting element, and the temperature is switched between full-wave energization and half-wave energization of the heater by using the temperature detection element, so that reliable temperature control and sterilization can be achieved. Becomes possible.

According to the seventh aspect of the present invention, by operating the high-temperature display lamp, the current state of the dish dryer can be known, and a convenient dish dryer can be obtained.

According to the eighth aspect of the present invention, the electric blower is
The electric blower was driven by a combination of the 00% energized state and the 70% energized state to realize two rotation speeds of the electric blower, thereby changing the air flow in the storage. The temperature can be raised to the high temperature required for sterilization.

According to the ninth aspect of the present invention, the electric blower is
By the 0% energized state, the temperature in the storage can be increased to a high temperature required for sterilization in a short time.

According to the tenth aspect of the present invention, the 70% energized state of the electric blower is intermittently performed, so that the sterilization in the storage can be reliably performed.

According to the eleventh aspect of the present invention, the electric blower is turned on 70% immediately after the start of drying to realize a high temperature in the storage, so that a lot of moisture and bacteria adhere to the stored tableware. Drying and disinfection are promoted in this state, and then the temperature is reduced to a normal temperature in a 100% energized state, and drying is performed. Thus, the total drying time can be reduced and effective disinfection can be achieved.

According to the twelfth aspect of the present invention, the electric blower is energized 70% immediately after the drying operation is started a plurality of times. Bacteria can be reliably promoted, the total drying time can be shortened, and bacteria can be effectively removed.

According to the thirteenth aspect of the present invention, the temperature detection at the time of high temperature is performed by the temperature detecting element, and by using the temperature detecting element, the electric blower is switched between the 100% energized state and the 70% energized state, thereby ensuring the temperature control. And eradication becomes possible.

According to the fourteenth aspect of the present invention, the current state of the dish dryer can be known by the operation of the high-temperature display lamp, and a user-friendly one can be obtained.

[Brief description of the drawings]

FIG. 1 is a circuit configuration diagram of Embodiments 1 to 3 of the present invention.

FIG. 2 is a block circuit diagram according to the first to third embodiments of the present invention.

FIG. 3 is a diagram showing a relationship among a power supply voltage, heater control output means, and a heater voltage according to the first to third embodiments of the present invention.

FIG. 4 is a diagram showing a relationship among a power supply voltage, a heater energizing voltage, and a motor energizing voltage in Embodiments 1 to 3 of the present invention.

FIG. 5 is an exemplary view of an operation unit of the dish dryer of the present invention.

FIG. 6 is a flowchart illustrating a control method according to the first embodiment.

7 is a timing chart of various operations of the dish dryer under the control of FIG. 6;

FIG. 8 is a flowchart illustrating a control method according to the second embodiment.

9 is a timing chart of various operations of the dish dryer under the control of FIG. 8;

FIG. 10 is a flowchart illustrating another control method according to the second embodiment.

11 is a timing chart of various operations of the dish dryer under the control of FIG.

FIG. 12 is a flowchart illustrating a control method according to the third embodiment.

13 is a timing chart of various operations of the dish dryer under the control of FIG.

FIG. 14 is a flowchart illustrating another control method according to the third embodiment.

15 is a timing chart of various operations of the dish dryer under the control of FIG.

FIG. 16 is a flowchart illustrating still another control method according to the third embodiment.

FIG. 17 is a timing chart of various operations of the dish dryer under the control of FIG. 16;

FIG. 18 is a block circuit diagram according to a fourth embodiment of the present invention.

FIG. 19 is a diagram showing a relationship among a power supply voltage, an electric blower control output unit, and an electric blower voltage according to Embodiment 4 of the present invention.

FIG. 20 is a diagram showing a relationship among a power supply voltage, an electric blower energizing voltage, and a heater energizing voltage in Embodiment 4 of the present invention.

FIG. 21 is a flowchart illustrating a control method according to the fourth embodiment.

22 is a timing chart of various operations of the dish dryer under the control of FIG. 21.

FIG. 23 is a flowchart illustrating another control method according to the fourth embodiment.

24 is a timing chart of various operations of the dish dryer under the control of FIG. 23.

FIG. 25 is a flowchart illustrating still another control method according to the fourth embodiment.

26 is a timing chart of various operations of the dish dryer under the control of FIG. 25.

FIG. 27 is a flowchart illustrating a control method according to the fifth embodiment.

28 is a timing chart of various operations of the dish dryer under the control of FIG. 27.

FIG. 29 is a flowchart showing another control method according to the fifth embodiment.

30 is a timing chart of various operations of the dish dryer under the control of FIG. 29.

FIG. 31 is a flowchart showing still another control method according to the fifth embodiment.

32 is a timing chart of various operations of the dish dryer under the control of FIG. 31.

FIG. 33 is a schematic view of a dish dryer.

FIG. 34 is an internal view of the dish dryer.

FIG. 35 is an exemplary view of an operation unit of a conventional dish dryer.

FIG. 36 is a circuit configuration diagram of a conventional tableware dryer.

FIG. 37 is a block circuit diagram of a conventional dish dryer.

FIG. 38 is a flowchart showing a conventional method for controlling a dish dryer.

39 is a timing chart of various operations of the dish dryer under the control of FIG. 38.

[Explanation of symbols]

1 tableware dryer body, 1a body inlet, 2 lids, 2
a Exhaust port opened in lid, 3 tableware storage, 4 cutting board storage case, 5, 5a operation section, 6 substrate, 7 hot air outlet, 8 electric blower, 9 heater, 10 tableware storage basket, 11 temperature fuse, 12 Thermostat, 13 Triac A (for heater), 14 Triac B (for electric blower), 15 Zero cross detection circuit, 16 Zener diode, 17 microcomputer, 18
Switch, 19 indicator lamp, 20 temperature detecting element, 2
1 timer setting means, 22 start input determination means,
23 CPU, 24, 24a output change means, 25 heater control means, 26 high temperature display lamp control means, 27
Indicator lamp control means, 28 electric blower control means, 2
9 Commercial power supply voltage, 30 full-wave heating state of heater, 3
1 Heater half-wave energized state, 32 Electric blower energized voltage, 36 Electrolytic capacitor, 37 Diode, 38
Resistance, 40 relay A (for heater), 41 relay B
(For electric blower), 42 Triac O when full wave is energized
N signal, 43 Triac ON signal at half-wave conduction, 4
4, 45 Zero cross detection circuit output, Triac ON signal at 46 100% energized, Triac ON signal at 47 70% energized, 48 100% energized electric fan voltage, 49 70% energized electric blower voltage.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Hishiyama 1728-1 Koeda, Oaza, Hanazono-cho, Osato-gun, Saitama Prefecture Inside Mitsubishi Electric Home Equipment Co., Ltd. Mitsubishi Electric Home Equipment Co., Ltd. (72) Inventor Kiyoshi Hara 1728-1, Komaeda, Hanazono-cho, Osato-gun, Saitama Prefecture Mitsubishi Electric Home Equipment Corporation

Claims (14)

[Claims] 1. A method for controlling a dish dryer in which air sucked by an electric blower is heated by a heater to generate hot air, and the hot air is blown into a storage to dry dishes in the storage. A method for controlling a dish dryer, wherein a heater is driven by a combination of half-wave energization and full-wave energization. 2. The method according to claim 1, wherein the heater is first energized for a half-wave for a predetermined time, and thereafter energized for a full wave. 3. The method according to claim 2, wherein the full-wave energization is performed a plurality of times. 4. The method for controlling a dish dryer according to claim 1, wherein a full-wave current is supplied to the heater for a predetermined time, and then a half-wave voltage is supplied to the heater. 5. The method for controlling a dish dryer according to claim 4, wherein after the half-wave energization, full-wave energization is further performed a plurality of times. 6. The method according to claim 1, wherein switching between full-wave energization and half-wave energization of the heater is performed using a temperature detecting element for detecting a temperature in the storage. Dish dryer control method. 7. The method according to claim 1, further comprising the step of activating a display lamp indicating the full-wave energization. 8. A method for controlling a dish dryer in which air sucked by an electric blower is heated by a heater to generate hot air, and the hot air is blown into a storage to dry dishes in the storage. A method for controlling a dish dryer, characterized in that the electric blower is driven by a combination of a 100% energized state and an energized state in which the energized amount is reduced by a certain amount from the 100% energized state. 9. Initially, the electric blower is operated for a predetermined time period of 100 hours.
9. The method according to claim 8, wherein the plate is driven in a% energized state, and then driven in an energized state in which the amount of current is reduced by a certain amount. 10. The method according to claim 9, wherein the electric blower is driven a plurality of times with the amount of power supplied to the electric blower reduced by a certain amount. 11. The method according to claim 8, wherein the electric blower is driven in an energized state in which the energized amount of the electric blower is reduced by a predetermined amount, and then driven in a 100% energized state. 12. The method of controlling a dish dryer according to claim 11, wherein the electric blower is driven a plurality of times in an energized state in which the energized amount of the electric blower is reduced by a certain amount. 13. The dish dryer according to claim 8, wherein switching of the energized state of the electric blower is performed by using a temperature detecting element for detecting a temperature in a storage. Control method. 14. The dish dryer according to claim 8, wherein when the electric blower is driven in an energized state in which the energized amount of the electric blower is reduced by a certain amount, an indicator lamp indicating the operation is activated. Machine control method.