JP2008025954A - Heatingcooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the usability while reducing the power consumption during waiting. <P>SOLUTION: A control means 21 turns on a power on-off means 18 by an auto-power-off means 23 in response to a door open detection signal from a door opening and closing detection means 24, turns off the power on-off means by the auto-power-off means in response to a door close detection signal from the door opening and closing detection means when the door is closed at the end of counting by a timer means 21a with off-operation of a door switch 9, and turns off the power on-off means by the auto-power-off means in response to the door open detection signal from the door opening and closing detection means when the door is opened at the end of counting by the timer means with on-operation of the door switch. The control means further turns on the power on-off means by the auto-power-off means in response to the door close detection signal from the door opening and closing detection means when the door is closed thereafter with off-operation of the door switch, and resets the timer means to start time counting. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cooking device having an automatic power-off function for turning off the power of a control means when it is not used for a predetermined time.

  In a conventional cooking device, a door switch provided between a commercial power source and a power supply circuit is turned on when the door is opened and turned off when the door is closed. The door switch is connected in parallel to the door switch, and the door switch is turned on. Power switching means for turning on when connected and connecting the commercial power supply to the power supply circuit, and energizing the display means when the timer means counts a predetermined time while the door is detected as detected by the door opening / closing detection means The power opening / closing means is turned off and the power opening / closing means is kept off even if the door opening / closing detection means detects the closing of the door (see, for example, Patent Document 1). .

JP 2002-022180 (first page, FIG. 2).

However, in the conventional cooking device, when a predetermined time or more has passed with the door opened, the power opening / closing means is kept off even if the subsequent door opening / closing detecting means detects the closing of the door. Therefore, it was very unusable.
In other words, the temperature in the heating chamber is always high after cooking in the oven, and it was necessary to cool the temperature in the heating chamber in order to prevent melting of the wrap and container when performing high-frequency cooking. . In particular, when performing automatic cooking using an infrared sensor, it is necessary to sufficiently cool the temperature in the heating chamber.

In other words, if the temperature in the heating chamber is high, the infrared sensor cannot accurately detect the temperature of the food, resulting in a low finish temperature. Therefore, in order to obtain good detection accuracy, the temperature in the heating chamber is sufficiently cooled. There was a need.
For this reason, when the temperature in the heating chamber is not sufficiently cooled, the cooking device displays that the heating chamber is hot and is controlled not to perform cooking. , “Please leave the door open and let the heating room cool down before cooking. (15 minutes)”.
In addition, after cooking boiled or steamed, many water droplets adhere to the heating chamber, so the user often left the door open and dried the heating chamber.

  Of course, such a cooking device is often left with the door open. Nevertheless, when the food is cooked again thereafter, the control means is not energized only by putting food in the heating chamber and closing the door. For this reason, in order to energize the control means, the user has to perform a useless operation of opening and closing the door again. In addition, there is also a problem that simply closing the door causes the power supply to not be turned on so that it is mistaken for a failure.

  The present invention has been made to solve the above-described problems, and has an object of providing an easy-to-use heating cooker having an auto power-off function to reduce standby power consumption. To do.

  A heating cooker according to the present invention includes a heating chamber having a door that opens and closes to store food, a heating source for heating the food in the heating chamber, and input means for setting the operation content of the heating source, Door opening / closing detection means for detecting opening / closing of the door, control means for controlling the operation of the heating source based on the setting of the input means, a power supply circuit for supplying power to the control means, a commercial power supply, and the power supply A door switch interposed between the circuit and turned on when the door is opened, and turned off when the door is closed; power opening / closing means connected in parallel to the door switch; and the door opening / closing detection means. When opening is detected, a predetermined timer time is set to start timing, and when the door opening / closing detection means detects the closing of the door, or when there is a key input by the key input means and thereafter The door A timer unit that resets when the opening after the closing is detected and starts timing, and an auto power off unit that turns on and off the power opening and closing unit; When the open detection signal is received, the power switching means is turned on by the auto power off means, and when the timer means finishes counting the timer time, the power switching means is turned off by the auto power off means, and thereafter When the door is closed and the door switch is switched from an on operation to an off operation, when the door close detection signal is received from the door open / close detection means, the power open / close means is turned on again by the auto power off means. Then, the timer means is reset and control is started to start timing.

  In the present invention, as described above, when the user opens the door to use the cooking device, the door switch is turned on to supply power from the commercial power supply to the power supply circuit, and control from which power is supplied from the power supply circuit. The means turns on the power opening / closing means by the auto power-off means when receiving the door opening detection signal from the door opening / closing detection means, and the timer means counts the timer time and there is no input from the input means. When the power open / close means is turned off by the power off means, and then the door is closed and the door switch is switched from the on operation to the off operation, when the door close detection signal is received from the door open / close detection means, the auto power off means The power switching means was turned on again, the timer means was reset, and the timing was started. If the door is closed after it has been released or after the door is opened after cooking and there is no input from the input means and the door is closed before the predetermined timer time elapses, it is determined that cooking will not be performed and the predetermined timer If the power supply from the commercial power supply to the power supply circuit is stopped after a lapse of time, and the door is left open with no input from the input means, and the door is open even after the predetermined timer time has elapsed When it is determined that cooking is likely to occur and the door is then closed, power is supplied from the commercial power supply to the power supply circuit to resume energization of the control means. After closing the door in the heating chamber, there is no need to perform the cumbersome and wasteful operation of opening and closing the door again, reducing standby power and improving usability. There is an effect.

FIG. 1 is a control circuit diagram of the microwave oven according to Embodiment 1 of the present invention, FIG. 2 is a perspective view showing the appearance of the microwave oven, and FIG. 3 is a flowchart showing the operation of the microwave oven.
In FIG. 2, the substantially box-shaped heating chamber 2 formed in the microwave oven 1 which is a heating cooker has an opening part in the front side. The front side of the microwave oven 1 is provided with a door 3 that constitutes the front wall of the heating chamber 2 when closed by a hinge portion, and closes the opening of the heating chamber 2 during cooking. Similarly, the operation panel 4 provided on the front side of the microwave oven 1 is provided with an input unit 5 and a display unit 6 for setting the heating conditions of the food stored in the heating chamber 2.

In FIG. 1, one of the commercial power sources 7 is connected to a movable contact 9 a of a door switch 9 that operates in conjunction with opening and closing of the door 3 via a current fuse 8. A closed contact 9 b of the door switch 9 is connected to the other of the commercial power supply 7 via the monitor switch 10.
In the door switch 9, the movable contact 9a is connected to the closed contact 9b when the door 3 is closed, and the movable contact 9a is connected to the open contact 9c when the door 3 is opened.
The monitor switch 10 is closed when the movable contact 9a of the door switch 9 is connected to the open contact 9c, and is opened when the movable contact 9a of the door switch 9 is connected to the closed contact 9b. The monitor switch 10 serves to blow the current fuse 8 when a welding failure occurs in which the movable contact 9a is not separated from the closed contact 9b while the door switch 9 is opened.

One of the heaters 11 serving as a heating source provided on the ceiling and bottom of the heating chamber 2 is connected to the closed contact 9b of the door switch 9 via a relay 15, and the other of the heaters 11 is connected to a commercial power source via a main relay 17. 7 is connected to the other side.
One of the high-frequency generation sources 12 composed of a magnetron or the like is connected to the closed contact 9 b of the door switch 9 via a relay 16, and the other of the high-frequency generation sources 12 is connected to the other of the commercial power supply 7 via a main relay 17. ing. A cooling fan motor 13 is connected to the high-frequency generation source 12 in parallel. One of the lamps 14 that illuminate the inside of the heating chamber 2 during cooking is connected to the closed contact 9 b of the door switch 9, and the other of the high-frequency generation source 12 is connected to the other of the commercial power supply 7 via the main relay 17.

These relays 15 and 16 are controlled by a control means to be described later, and connect the heater 11, the high frequency generation source 12 and the cooling fan motor 13 to the commercial power source 7.
The main relay 17 is ON / OFF controlled by a control means to be described later, and connects the load circuit including the heater 11, the high frequency generation source 12, the cooling fan motor 13, and the lamp 14 to the commercial power source 7.
A relay (hereinafter referred to as “power switching means”) 18 serving as a power switching means is connected in parallel to the movable contact 9 a and the open contact 9 c of the door switch 9. The power switching means 18 is on / off controlled by a control means described later. One of the input sides of the power supply circuit 19 that supplies a DC voltage to the control means described later is connected to one of the power switching means 18, and the other input side of the power supply circuit 19 is connected to the other of the commercial power supply 7.

  The control circuit 20 includes a microcomputer 21 as a control means, a relay drive means 22 that drives and controls the relays 15, 16, and 17, an auto power-off means 23 that drives the power switching means 18 on and off, and an operation panel 4. The provided input means 5 and display means 6, the door open / close detection means 24 for detecting the open / closed state of the door 3 by a switch (not shown) different from the door switch 9 and outputting a detection signal, and the inside of the heating chamber 2 A sensor circuit 25 comprising a temperature sensor for detecting the temperature of the food, an infrared sensor for detecting the temperature of the food, and the like, and detecting when the DC voltage of the power supply circuit 19 rises and outputting a reset signal to the microcomputer 21, A reset unit 26 for initialization and a frequency discrimination unit 27 for discriminating the frequency of the commercial power source 7 and outputting a frequency discrimination signal are provided. The microcomputer 21 includes timer means 21a that measures various times such as cooking time.

Next, the operation of the heating cooker according to Embodiment 1 of the present invention will be described using the flowchart of FIG.
Before that, the operation related to the power switching means 18 will be described.
When the user opens the door 3 to use the microwave oven in a state where the power is cut off, that is, the movable contact 9a of the door switch 9 is connected to the closed contact 9b and the power switching means 18 is turned off, The connection of the movable contact 9 a of the switch 9 is switched to the open contact 9 c, power is supplied from the commercial power supply 7 to the power supply circuit 19, and power is supplied to the control means 20. The reset means 26 detects the rising of the voltage of the power supply circuit 19 and gives a reset signal to the microcomputer 21.
Further, the frequency discriminating means 27 gives a frequency discriminating signal for discriminating whether the frequency of the commercial power source 7 is 50 Hz or 60 Hz from the commercial power source 7 supplied to the power supply circuit 19. Based on this frequency discrimination signal, the microcomputer 21 creates a reference for time counting such as cooking time, detects an instantaneous power failure (so-called instantaneous power failure), and controls the relay driving means 22.

Upon receiving the reset signal from the reset means 26, the control means 20 resets the register, operation, and RAM in step S1, and when initialization is completed, the microcomputer 21 starts energizing the display means 6 and lights up the display. The power switching means 18 is turned on by the auto power off means 23 (S2).
Next, the timer time t1 to be counted is set in the timer means 21a (S3). In the first embodiment, the timer time t1 is, for example, 5 minutes. About the timer time of the timer means 21a, it is sufficient time for a user to determine a cooking menu with the input means 5 while looking at the display means 6, or to confirm that the cooking has been completed by looking at the display means 6. It is set and is not limited to 5 minutes.

When a predetermined timer time t1 is set in step S3, the timer means 21a of the microcomputer 21 starts a time counting operation of the timer time t1, that is, a subtraction operation (S4), and whether or not a key input operation has been performed by the input means 5. Is determined (S5).
If it is determined in step S5 that a key input operation has been performed, the timer time of the timer means 21a is reset (S6). After the timer time is reset, whether the door 3 is closed by the door open / close detection means 24 or not. Is determined (S7).
If it is determined in step S7 that the door 3 is open, the process proceeds to step S4, and the timer time t1 is started again. If it is determined in step S7 that the door 3 is closed, it is determined whether the input key is a cooking start key (S8). If the key input in step S8 is not the cooking start key, the process proceeds to step S4, and the timer time t1 is started again.

When the cooking start key of the input means 5 is operated, the microcomputer 21 first drives and controls the main relay 17 by the relay drive circuit 22 to turn on the lamp 14 and illuminate the inside of the heating chamber 2, and the relay 15 or The heater 11 or the high frequency generation source 12 which is a heating source is controlled by driving the heater 16 to start the heating operation by the heating control set by the user using the input means 5 (S9).
When the heating operation is started, it is determined whether or not the door 3 is opened by the door opening / closing detection means 24 (S10). Further, it is determined whether or not a cancel key for interrupting cooking is operated from the input means 5 (S11).
If the door 3 is opened in step S10, or if it is determined in step S11 that the cancel key has been operated, the microcomputer 21 controls the relay drive circuit 22 to switch the relay 17, relay 15 or 16 on. It opens and the operation of the heating source is interrupted (S12). Thereafter, the timer time of the timer means 21a is reset (S13), the process proceeds to step S4, and the timer operation for the timer time t1 is started.

If neither the door opening nor the cancel key input operation is performed after the heating operation is started in step S9, it is determined whether cooking is finished (S14). That is, the cooking end determination is made such as whether the set heating time has elapsed or the input of the sensor circuit 26 has reached a predetermined value.
If cooking has not ended, the process returns to step S10 and the heating operation is continued. On the other hand, if it is determined that cooking has ended, the microcomputer 21 controls the relay drive circuit 22 to open the relay 17, relay 15 or 16 and end the operation of the heating source, as well as the display means 5 and notification. A user (not shown) notifies the user that cooking has been completed (S15). After that, after resetting the timer time of the timer means 21a in step S13, the process proceeds to step S4 to start the time counting operation of the timer time t1.
After the user is informed that cooking has been completed, the food is heated when the door 3 is opened and the heated food is taken out from the heating chamber 2, and then cooking is performed when the door 3 is closed without any key input. The power supply from the commercial power supply 7 to the power supply circuit 19 is finally stopped through step S18 to be described later, and the power supply is turned off.

As described above, when there is a key input in step S5, it is determined whether or not a cooking start key has been input in step S8 after viewing the open / closed state of the door 3 in step S7, and cooking is performed in step S9. When the operation is started, the heating operation is executed by repeating Step S10 to Step S14.
On the other hand, if there is no key input in step S5, the timer operation of the timer time t1 is continued, and it is determined whether or not the timer time set in the timer means 21a has been counted (S16). If the counting has not been completed, the process returns to step S5 to determine whether or not there is a key input operation. If the set timer time has been counted in step S16, the process proceeds to step S17, and the door open / close detection means 24 detects the open / closed state of the door 3 (S17).

If the door 3 is closed, the process proceeds to step S18, where the microcomputer 21 stops energizing the display means 6 to turn off the display, and turns off the power opening / closing means 18 by the auto power off means 23. . At this time, since the door 3 is closed, the movable contact 9a of the door switch 9 is connected to the closed contact 9b, the power supply from the commercial power supply 7 to the power supply circuit 19 is stopped, and the power supply is turned off. The
On the other hand, if the door 3 is opened in step S17, the process proceeds to step S19, where the microcomputer 21 stops energizing the display means 6 and turns off the display, and the auto power-off means 23 turns the power open / close means. 18 is turned off. If the door 3 is open, the process waits until the door 3 is closed in step S20. At this time, although the power switching means 18 is turned off, the movable contact 9a of the door switch 9 is connected to the open contact 9c, so that power is continuously supplied from the commercial power supply 7 to the power supply circuit 19. Yes.

In step S20, the door opening / closing detection means 24 detects whether or not the door 3 is closed. When the door open / close detection means 24 detects the closing of the door 3, the movable contact 9a of the door switch 9 is connected to the closed contact 9b because the door 3 is closed. The power supply to 19 is stopped.
As described above, when the power supply to the power supply circuit 19 is stopped, the voltage of the power supply circuit 19 decreases, and the time until the reset means 26 outputs a reset signal to the microcomputer 21 is about 1 second. This time of about 1 second is longer than the time until the microcomputer 21 described later drives the auto power-off means 23 to turn on the power switching means 18 again and restart the power supply.

Therefore, during this 1 second, the microcomputer 21 receives the detection signal that the door opening / closing detection means 24 detects the closing of the door 3 and resumes energization to the display means 6 to turn on the display and to turn off the auto power off. If the power switching means 18 is turned on again by the means 23 (S21) and the power supply is resumed, the power supply to the power supply circuit 19 is not substantially stopped, and then the timer means 21a is reset (S22). The timer time t2 can be newly set in the timer means 21a (S23).
In the first embodiment, the timer time t2 is also set to 5 minutes like the timer time t1. Then, it transfers to step S4, starts the time measuring operation | movement of timer time t2, and transfers to a cooking standby state.

  As described above, according to the first embodiment of the present invention, when the user opens the door 3 to use the microwave oven 1 with the power turned off, the door switch 9 is turned on and the commercial power supply 7 is turned on. Is supplied to the power supply circuit 19, and the microcomputer 21 to which the power is supplied turns on the power switching means 18 by the auto power off means 23, and then sets a predetermined timer time t1 in the timer means 21a, and the timer time t1 When the cooking start key is operated during the timing operation, the timer time t1 of the timer means 21a is reset, and the door opening / closing detection means 24 confirms whether the door 3 is closed. After that, the microcomputer 21 drives and controls the relays 15 and 16 by the relay drive circuit 22 to operate the heater 11 or the high frequency generation source 12 to perform cooking. However, when the cooking start key is not operated during the time counting operation of the timer time t1 and the timer time t1 is counted, the door open / close detection means 24 detects the open / closed state of the door 3, and the door 3 is closed. When the microcomputer 21 confirms that the power is turned on, the microcomputer 21 turns off the power switching means 18 by the auto power-off means 23 to stop the power supply from the commercial power supply 7 to the power supply circuit 19 and the door 3 is opened. Even when the microcomputer 21 confirms that the power is supplied, the microcomputer 21 turns off the power switching means 18 by the auto power-off means 23 and the power supply from the commercial power supply 7 to the power supply circuit 19 is stopped. The power is supplied from the commercial power supply 7 to the power supply circuit 19 after being turned on, and then the door 3 is closed and the door switch 9 is turned off. When the microcomputer 21 confirms that the door opening / closing detection means 24 has detected the closing of the door 3, the microcomputer 21 turns on the power opening / closing means 18 again by the auto power-off means 23 and turns the timer means 21 a on. After resetting, resetting the timer means 21a and starting timing, the door 3 is left open and left as it is for cooking, or after the oven cooking or steam cooking, the door 3 remains open If there is no key input and the door 3 is closed after a certain period of time, it is determined that cooking is not performed, the power supply from the commercial power supply 7 to the power supply circuit 19 is stopped, and the door 3 is opened. If the door 3 is left open without any key input and the door 3 is open after a certain period of time, it is determined that cooking may be performed, and then the door 3 is closed. In this case, power is supplied from the commercial power supply 7 to the power supply circuit 19 so that the power supply to the microcomputer 21 is resumed. Therefore, after the food is placed in the heating chamber and the door is closed as before, the door is opened and closed again. This eliminates the need for cumbersome and wasteful operations, reduces power during standby, and improves usability.

Embodiment 2. FIG.
The configuration of the second embodiment of the present invention is different from the first embodiment in that the count time t2 set in the timer means 21a is set to be shorter than the count time t1, and the other configurations. Are the same, the description of the configuration is omitted.
The operation of the heating cooker according to Embodiment 2 of the present invention will be described using the flowchart of FIG.
In the flowchart of FIG. 4, steps S31 to S51 are the same as steps S1 to S21 of FIG.

In step S53, in the second embodiment, 30 seconds is set as the timer time t2 to be counted in the timer means 21a. Here, the timer time t2 is set to be shorter than the timer time t1 set in step S33. That is, there are two main purposes for the user to close the door 3 in step S50 after leaving the door 3 open for a long time after cooking in an oven or the like.
One is when the door 3 is left open and the door 3 is closed, and the other is when the food is newly cooked. In the former case, the power supply to the control circuit 20 (microcomputer 21) can be reduced as soon as the power supply to the control circuit 20 (microcomputer 21) is stopped as early as possible. However, in the latter case, the user inputs the heating cooking conditions by the input means 5 Thus, the power supply to the control circuit 20 (microcomputer 21) must be continued until a key is input.
Therefore, in the second embodiment, the timer time t2 is set to 30 seconds as a time sufficient for inputting the cooking condition by the input means 5.

  As described above, in the second embodiment, after the oven cooking or the like, the door 3 is left open for a long time, and then the first cooking is performed for the timer time t2 after the user closes the door 3. Is set to be shorter than the timer time t1, so that it is sufficient time for the user to key-in the cooking condition by the input means 5, which improves usability and has a timer time t2 shorter than the timer time t1. When the door 3 is closed after the elapse of time, the power supply to the control circuit 20 is stopped, so that the standby power can be reduced.

In addition, since the time until the cooking conditions are input by the input means 5 varies depending on the user, the standard time is the same as the timer time t1, and the timer time t2 can be arbitrarily set by the user using the input means 5. It may be possible to set the time.
Furthermore, if the set timer time t2 is stored in a non-volatile memory (not shown) in the microcomputer 21, a user-friendly cooking device suitable for the user can be provided when used thereafter. Can do.

Embodiment 3 FIG.
In the third embodiment of the present invention, the display unit 6 and the power switching unit 18 are turned off in the state in which the door 3 is opened in the first or second embodiment (that is, the step S19 in the first embodiment is performed). From the step S49) of the second embodiment until the closing of the door 3 is detected and the power opening / closing means 18 is turned on again, the door switch is related to the operation timing of the door switch 9 and the door opening / closing detection means 24. The door closing detection of the door opening / closing detection means 24 is delayed from the OFF operation of FIG. 9, the frequency discrimination signal to the microcomputer 21 is interrupted, and the microcomputer 21 erroneously determines that it is an instantaneous power failure. It is for improving.

The operation of the heating cooker according to Embodiment 3 of the present invention will be described using the flowchart of FIG.
In the flowchart of FIG. 5, steps S51 to S70 are the same as steps S1 to S21 of FIG.

In step S70, when the door opening / closing detection means 24 detects the closing of the door 3, the microcomputer 21 turns on the power opening / closing means 18 by the auto power-off means 22 (S71), and further determines the instantaneous power failure performed by the microcomputer 21. Is invalidated (S72).
Then, it waits until the frequency discrimination signal is again input to the microcomputer 21 from the frequency discrimination means 27 (S73). If the frequency discrimination signal is input to the microcomputer 21 from the frequency discrimination means 27, the power switching means 18 is turned on. Thus, power is supplied to the power supply circuit 19 from the commercial power supply 7, and the power supply of the microcomputer 21 is stabilized.

  Therefore, after detecting the frequency discrimination signal, the microcomputer 21 resumes energization of the display means 6 and validates the instantaneous power failure judgment performed by the microcomputer 21 itself (S74), resets the timer means 21a (S75), and newly starts the timer means. The timer time t2 is set to 30 seconds in 21a (S76), the process proceeds to step S54, and time measurement is started.

  As described above, in the third embodiment, after the door opening / closing detection unit 24 detects the closing of the door 3, the period from when the frequency determination signal is input to the microcomputer 21 from the frequency determination unit 27. Has invalidated the judgment of power failure when it is performed by itself, so even if the heating operation is set immediately after the door opening / closing detection means 24 detects the closing of the door 3, the microcomputer 21 can perform the heating operation without any trouble. Can be improved.

The control circuit diagram of the microwave oven of Embodiment 1 of this invention. The perspective view which shows the external appearance of the microwave oven. The flowchart figure which shows operation | movement of the microwave oven. The flowchart which shows operation | movement of the microwave oven of Embodiment 2 of this invention. The flowchart which shows operation | movement of the microwave oven of Embodiment 3 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Microwave oven (heating cooker) 2 Heating chamber 3 Door 4 Operation panel 5 Input means 6 Display means 7 Commercial power supply 8 Current fuse 9 Door switch 9a Movable contact 9b Open contact 9c Close Contact, 10 Monitor switch, 11 Heater, 12 High frequency generation source, 13 Cooling fan motor, 14 Lamp, 15, 16 Relay, 17 Main relay, 18 Power switching means, 19 Power supply circuit, 20 Control circuit, 21 Microcomputer (control means) , 21a timer means, 22 relay drive circuit, 23 auto power off means, 24 door open / close detection means, 25 sensor circuit, 26 reset means, 27 frequency discrimination means.

Claims (3)

A heating chamber having a door that opens and closes to store food, a heating source that heats the food in the heating chamber, input means for setting the operation content of the heating source, and door opening and closing that detects opening and closing of the door A detection means; a control means for controlling the operation of the heating source based on the setting of the input means; a power supply circuit for supplying power to the control means; and a commercial power supply and the power supply circuit. A door switch that is turned on when the door is opened and turned off when the door is closed; power opening and closing means connected in parallel to the door switch; and a predetermined timer time when opening of the door is detected by the door opening and closing detection means When the door opening / closing detection means detects the closing of the door, or when there is a key input by the key input means and the opening after the door is closed thereafter Detected Reset comprises a timer means to start counting, the automatic power-off means for turning on and off said power switching means to,
The control means includes
Upon receipt of a door opening detection signal from the door opening / closing detection means, the auto power off means turns on the power opening / closing means, and when the timer means finishes counting the timer time, the auto power off means turns on the power opening / closing. Turn off the means,
Thereafter, when the door is closed and the door switch is switched from the on operation to the off operation, when the door close detection signal is received from the door open / close detection means, the automatic power off means turns the power open / close means on. A heating cooker that is turned on again, resets the timer means, and controls to start timing.   The timer means closes the door from a state in which the power opening / closing means is turned off while the door is open for a first predetermined timer time from when the door is opened until the power opening / closing means is turned off. 2. The cooking device according to claim 1, wherein the second predetermined timer time from when the power switching means is turned on again to when it is turned off is set to be short when the power is opened. The control means invalidates the instantaneous power failure judgment until the power frequency discrimination signal is input to the control means when the door is closed from the state where the power switching means is turned off while the door is open. The cooking device according to claim 1 or 2, characterized in that the cooking device is made into a unit.

Images