JP5199723B2 - Cooker - Google Patents

Description

  In the present invention, whether the object to be heated is placed on the placement part for placing the object to be heated to be heated by the heating means or not placed is not placed. A loading operation state detecting unit for detecting, a heating operation process for starting a heating operation of the heating unit by a heating start command by the heating command unit and stopping a heating operation of the heating unit by a heating stop command by the heating command unit; The heating control means for executing the cooking heating process for controlling the heating operation of the heating means based on the detection information of the placement state detection means, and the power-on condition is satisfied by the heating start command of the heating command means Power supply control means for supplying power to the heating control means from a power source and shutting off the supply of power to the heating control means when a power-off condition is satisfied by a heating stop command of the heating command means The heating control means integrates an indicator for determining the state of placement that appears regularly or irregularly as time elapses in a state where the placement state is detected by the placement state detection means. The integrated value is calculated and the integrated value is calculated by resetting the integrated value when the non-mounting state is detected by the mounting state detecting means, and the integrated value integrated by the integrated value calculating process. The present invention relates to a heating cooker configured to execute abnormality countermeasure processing when reaches a reference value for abnormality determination.

  Such a heating cooker can be used as the heating process for cooking, for example, even if a heating start command is commanded by the heating command means when the non-placed state is detected by the placement state detection means, A process for checking the heating operation, a process for reducing the heating amount when the non-placed state is detected by the placing state detecting means when the heating means is performing the heating operation, etc. It is designed so that appropriate heating cooking can be performed on an object to be heated. In addition, by executing the integrated value calculation process and the abnormality countermeasure process, for example, the mounted state can be set even though the object to be heated is not mounted on the mounting unit due to a failure of the mounting state detection unit or the like. In the case where a detected abnormality has occurred, it is possible to avoid the disadvantage of continuing use in the state where the abnormality has occurred.

Conventionally, such a cooking device has been configured as follows.
That is, when the heating control means integrates the time as an index for determining the standing state progress in the state where the placing state is detected by the placing state detection means, and power is supplied When the mounting state detection unit detects a non-mounting state, the integrated value of the time is reset, and the power control unit is mounted even when the power-off condition is satisfied. When the mounting state is detected, the power supply to the heating control means is continued, and then the power supply to the heating control means is stopped when the mounting state detection means detects the non-loading state. Of the structure to be used (hereinafter referred to as the former structure), and when the power-off condition is satisfied, the power supply to the heating control means is stopped, and the integration of the indicator for determining the state of the installation is interrupted. And the integrated value A state that is stored in the volatile memory and then added to the integrated value stored in the non-volatile memory if the mounting state is detected by the mounting state detection means when the power-on condition is satisfied In the above, there is a configuration that resumes the integration of the indicator for determining the progress of the standing state (referred to as the latter configuration in the following description) (see, for example, Patent Document 1).

JP 2006-97976 A

  In the former configuration of the above-described conventional configurations, when the mounting state detection unit detects the mounting state when the power-off condition is satisfied by the heating stop command of the heating command unit, to the heating control unit After the cooking operation is stopped by stopping the heating operation of the heating means, the user can lift the object to be heated from the placement unit or move it to another place immediately after the heating operation is stopped. When the mounting state change operation is performed, the integrated value of the indicator for determining the mounting state progress is reset and the power supply to the heating control means is stopped, so that wasteful power consumption is reduced. When a long time elapses between the time when the heating operation of the heating unit is stopped after the operation is finished and before the placement state change operation of the object to be heated is performed, power is supplied to the heating control unit. Longer power consumption That there is a disadvantage. In particular, a battery equipped with a battery as a power source is inconvenient because the battery is consumed in a short period of time and the replacement time is shortened.

  On the other hand, in the latter configuration of the above-described conventional configurations, power consumption is suppressed because power supply to the heating control unit is stopped when the power-off condition is satisfied, but in this configuration, cooking is being performed. If the use mode is such that the user performs the mounting state changing work after stopping the heating operation of the heating means without performing the mounting state changing work of the heated object as described above, the heating control means Since the placement state detection means does not detect the non-placement state while power is being supplied, the integrated value of the placement state progress indicator is not reset. As a result, depending on the usage pattern by the user of the cooking device, the integrated value of the indicator for determining the progress of the previous placement state reaches the reference value for determining the abnormality even though the previous placement state detection means is not abnormal. There is a disadvantage of executing unnecessary abnormality countermeasure processing.

  An object of the present invention is to enable heating to be able to suppress power consumption but prevent unnecessary abnormality countermeasure processing from being performed even though no abnormality has occurred. The point is to provide a cooker.

The heating cooker according to the present invention is in a mounting state in which the object to be heated is mounted on the mounting portion on which the object to be heated to be heated by the heating means is mounted or is not mounted A mounting state detecting means for detecting whether or not the state;
A heating operation process for starting a heating operation of the heating unit by a heating start command by the heating command unit and stopping a heating operation of the heating unit by a heating stop command by the heating command unit, and detecting the installation state detecting unit Heating control means for performing a cooking heat treatment for controlling the heating operation of the heating means based on the information;
When the power-on condition is satisfied by the heating start command of the heating command means, power is supplied from the power source to the heating control means, and when the power-off condition is satisfied by the heating stop command of the heating command means, the power is supplied to the heating control means. Power supply control means for cutting off the supply of power,
The heating control means
In the state in which the previous placement state is detected by the previous placement state detection means, an indicator for determining the placement state progress that appears regularly or irregularly with the passage of time is integrated and the integrated value is obtained. The integrated value calculation process for resetting the integrated value when the non-mounted state is detected by the obtained mounting state detecting means, and the integrated value integrated by the integrated value calculating process is the reference value for abnormality determination Is configured to execute abnormality countermeasure processing when it reaches
The first characteristic configuration is that when the power-off condition is satisfied and the power-supply control unit cuts off the supply of power to the heating control unit, the placement state detection unit changes the non-mounting state. When switching from the state to be detected to the state for detecting the above-mentioned mounting state, there is provided a mounting detection integrated value resetting means for resetting an integrated value obtained by integrating the above-mentioned mounting state progress determination index. is there.

  That is, the heating control unit performs the integrated value calculation process in addition to the heating operation process and the cooking heating process when the power-on condition is satisfied by the heating start command of the heating command unit and electric power is supplied. Run. In other words, in the state in which the previous placement state is detected by the previous placement state detection means, the placement state progress indicators that appear regularly or irregularly with the passage of time are integrated and the integration is performed. When the value is obtained and the non-mounted state is detected by the mounting state detecting means, the integrated value is reset.

  The placement state progress indicator that appears regularly or irregularly with the passage of time is, for example, the time in the state in which the placement state is detected by the placement state detection means, When the heating start command by the heating command means is commanded, the number of times the placement detection state at the start of heating is detected by the previous placement state detection means, or by the previous placement state detection means There is a heating amount by the heating means in a state in which the above-described placement state is detected. In short, it is an index that appears regularly or irregularly with the passage of time in a state in which the previous placement state is detected by the previous placement state detection means, and by integrating the indicators, for example, This is an index that enables detection of an abnormal state.

  Then, when the power-off condition is satisfied by the heating stop command of the heating command means, the supply of power to the heating control means is interrupted. Thus, the power-off condition is satisfied and the power control means When the supply of electric power to the heating control means is interrupted, the user changes the placement state of the heated object by lifting the heated object that has been cooked from the placement unit or moving it to another location. If the object to be heated is placed on the placement part for the next cooking, the placement state detection means is not malfunctioning and is operating normally. For example, since the placement state detection means switches from the state in which the non-placement state is detected to the state in which the placement state is detected, the placement detection integrated value reset means performs placement state progress determination. Reset the integrated value that is integrated with the index for That. However, if there is an abnormality in which the placement state is detected even though the object to be heated is not placed on the placement unit due to a failure of the placement state detection means, the user Even if the object to be heated is placed on the placement portion for the next cooking, the placement detection integrated value resetting means resets the accumulated value obtained by integrating the placement state progress indicator. There is nothing.

  That is, after cooking is finished and the heating operation of the heating means is stopped, the power supply to the heating control means is cut off, so that power is not consumed unnecessarily and power consumption is suppressed. In addition, if the placement state detection unit is operating normally, power supply to the heating control unit is started after the object to be heated is placed on the placement unit for the next cooking. Even in such a use form, since the integrated value is reset by the integrated value resetting means for mounting detection by placing the object to be heated on the mounting part, for example, it is continuously integrated even in subsequent use. It is possible to reduce the possibility of executing the abnormality countermeasure processing unnecessarily even though the abnormality continues to be accumulated in the state of being added to the value and no abnormality has occurred.

  That is, it is premised on a configuration in which it is determined that it is an abnormal state when the state in which the placement state is detected by the placement state detection unit continues for a long period by integrating the integrated value. When the supply of power to the heating control means is interrupted, the placement state detection means detects the placement state, in other words, the heating cooking ends and the supply of power to the heating control means is interrupted. When it is detected that the object to be heated is placed on the placement unit for the next cooking, the integrated value is reset.

  Therefore, according to the first feature configuration, while it is possible to suppress power consumption, it is possible to prevent the abnormality countermeasure processing from being performed unnecessarily even though no abnormality has occurred. It came to be able to provide the cooking device which became possible.

In addition to the first feature configuration, the second feature configuration of the present invention includes:
Storage means for storing an integrated value obtained by integrating the indicator for determining the standing state progress described above,
The integrated value resetting means for the position detection described above is
Storage information processing means for mounting detection for resetting the storage content stored in the storage means;
A power supply unit for placement detection that can be switched between a power supply state for supplying power from the power source to the storage information processing means for placement detection and a cut-off state for cutting off the power supply;
When the power is supplied from the power source and the mounting state detection means switches from the state of detecting the non-mounting state to the state of detecting the mounting state, the power supply unit for detecting the mounting position And a pulse generator for mounting detection that outputs a pulse signal for switching to a power supply state,
The stored information processing means for detecting the position described above, the integrated value stored in the storing means when the power supply unit for detecting the position is switched from the cut-off state to the power supply state by the pulse signal. It is configured to reset.

  That is, when the placement state detection means switches from the state in which the non-placement state is detected to the state in which the placement state is detected, the placement detection pulse generation unit outputs a pulse signal, and the pulse signal Since the power supply unit for mounting detection is switched from the cut-off state to the power supply state, power is supplied to the storage information processing means for mounting detection. When the storage information processing means is switched to the power supply state, the stored information processing means resets the integrated value obtained by integrating the above-described indicators for determining the state of passage of time stored in the storage means.

  Further, since the pulse generator for detecting the position described above is provided in a state in which power is supplied from the power source, even if the power is not supplied to the heating control means, the position detecting means described above. When a state where the non-mounting state is detected is switched to a state where the mounting state is detected, a pulse signal can be output.

  That is, power is not supplied to the storage information processing means until the placement state detection means switches from the state in which the non-placement state is detected to the state in which the placement state is detected. There is no wasteful power consumption by the stored information processing means. Power is supplied from the power source to the above-described pulse detection unit for placement detection, but this placement detection pulse generation unit switches the power supply unit for placement detection from the cutoff state to the power supply state. It is possible to use a simple configuration as long as it can output a pulse signal for this purpose, and it is also possible to adopt a low power consumption type circuit configuration, such as heating control means and memory It is possible to reduce the power consumption compared to the information processing means. That is, the integrated value reset means for mounting detection can suppress the increase in power consumption to a minimum as much as possible while having a simple configuration.

  Therefore, according to the second feature configuration, the placement state detection unit detects the non-placement state from the state where the placement state detection unit detects the non-placement state in a state where the increase in power consumption is suppressed as much as possible and the configuration is not significantly complicated. When the state is switched to the state detecting state, the integrated value can be reset.

In addition to the second feature configuration, the third feature configuration of the present invention includes:
The pulse detector for the above-mentioned position detection is
When the previous placement state detection means switches from the state of detecting the non-placement state to the state of detecting the placement state instantaneously and then returning to the state of detecting the non-placement state, The configuration is such that no pulse signal is output.

  That is, when the placement state detection means returns from the state of detecting the non-placement state to the state of detecting the placement state instantaneously and then returning to the state of detecting the non-placement state The pulse detection unit for detecting the placement described above does not output a pulse signal, so that the non-placed state is detected after switching to a state where the placement state is detected instantaneously due to a disturbance or the like. In the case of returning to the state, since the mounting detection pulse generator does not output a pulse signal, the integrated value is not unexpectedly reset.

  Therefore, according to the third characteristic configuration, it is possible to avoid the inconvenience that the integrated value is reset in a state where the previous placement state detection means has not switched to the state in which the previous placement state is detected due to a disturbance or the like. be able to.

In addition to the second feature configuration or the third feature configuration, the fourth feature configuration of the present invention includes:
The integrated value resetting means for the position detection described above is
When the integrated value is reset by the storage information processing means after the power supply unit for detecting the position is switched from the cut-off state to the power supply state by the pulse signal, the position detecting The power supply unit is configured to switch from the power supply state to the cut-off state.

  That is, when the power supply unit for placement detection is switched from the cut-off state to the power supply state by the pulse signal generated by the placement detection pulse generator, and the power is supplied to the storage information processing means, The accumulated information is reset by the stored information processing means. When the stored information processing means resets the accumulated value, the placement detection power supply unit switches from the power supply state to the shut-off state. The state in which power is supplied to the information processing means does not become unnecessarily long, and the power consumption can be suppressed.

  Therefore, according to the fourth characteristic configuration, the integrated value can be reset when the mounting state detection unit switches from the state in which the non-mounting state is detected to the state in which the mounting state is detected. Further, it becomes possible to further reduce the power consumption.

In addition to any of the first feature configuration to the fourth feature configuration, the fifth feature configuration of the present invention includes:
When the power-off condition is satisfied and the power supply control unit cuts off the supply of power to the heating control unit, the placement state detection unit detects the placement state from the state in which the placement state is detected. When the state is switched to the state detecting state, there is provided non-mounting detection integrated value resetting means for resetting the integrated value obtained by integrating the above-described placement state progress determining index.

  In other words, the non-placement detection integrated value resetting means determines when the placement state detection means switches from the state in which the placement state detection means detects the placement state to the state in which the placement state is detected. Since the integrated value obtained by integrating the index for use is reset, the integrated value can be reset more accurately.

  In other words, if only the integrated value resetting means for detecting the position is provided, the user can cook while the power supply control means shuts off the power supply to the heating control means. After performing the placement state change work of the heated object that has been finished, when the heated object is placed on the placement part for the next cooking, the placement state detection means causes the Since the integrated value is not reset when a detection error occurs in which the switching from the non-mounting state to the previous mounting state cannot be detected satisfactorily, the index for determining the previous mounting state has not been performed. Will be accumulated.

  Therefore, by providing the integrated value resetting means for non-placement detection, if the above-described placement state detection means is not malfunctioning and is operating normally, the heated object to which the user has finished cooking When the mounting state change operation is performed, when the mounting state detection unit switches from the state of detecting the mounting state to the state of detecting the non-mounting state, this is detected and the integration is performed. The value will be reset.

  Therefore, according to the fifth characteristic configuration, not only the switching from the state in which the mounting state detection unit detects the non-mounting state to the state in which the mounting state is detected, but also the mounting state detection unit includes When it is detected that the state where the mounting state is detected is switched to the state where the non-mounting state is detected, the integrated value is reset. Therefore, the integrated value is reset due to an unexpected detection error or the like. It is possible to avoid the inconvenience of not being present and to reset the integrated value more accurately.

In addition to the fifth feature configuration, the sixth feature configuration of the present invention includes:
Storage means for storing an integrated value obtained by integrating the indicator for determining the standing state progress described above,
The integrated value resetting means for non-mounting detection,
Storage information processing means for non-placement detection for resetting the storage content stored in the storage means;
A power supply unit for non-placement detection that can be switched between a power supply state for supplying power from the power source to the storage information processing means for non-placement detection and a cut-off state for shutting off the power supply;
The power supply unit is changed to a power supply state when the power supply unit is switched from a state in which power is supplied from a power source and the mounting state detection means detects the mounting state to a state in which the non-mounting state is detected. A non-mounting detection pulse generating unit that outputs a pulse signal for switching,
The storage information processing means for non-placement detection is configured to store the integration stored in the storage means when the non-placement detection power supply unit is switched from the shut-off state to the power supply state by the pulse signal. It is configured to reset the value.

  That is, when the placement state detection means switches from the state where the placement state is detected to the state where the placement state is detected, the non-placement detection pulse generator outputs a pulse signal, and the pulse signal As a result, the power supply unit for non-placement detection switches from the cut-off state to the power supply state, so that power is supplied to the storage information processing means for non-placement detection. When the storage information processing means is switched to the power supply state, the stored information processing means resets the integrated value obtained by integrating the above-described indicators for determining the state of passage of time stored in the storage means.

  Further, since the non-mounting detection pulse generator is provided in a state where power is supplied from the power source, the mounting state detection means described above even when power is not supplied to the heating control means. When the state is switched from the state where the mounting state is detected to the state where the non-mounting state is detected, a pulse signal can be output.

  That is, power is supplied to the storage information processing means for non-placement detection until the placement state detection means switches from the state where the placement state is detected to the state where the non-placement state is detected. Therefore, there is no wasteful power consumption by the stored information processing means. Power is supplied from a power source to the non-mounting detection pulse generator, but the non-loading detection pulse generator supplies power from a non-mounted detection power supply unit in a shut-off state. As long as it can output a pulse signal for switching to a state, it can be configured with a simple configuration, and it is also possible to adopt a low power consumption type circuit configuration, and heating control It is possible to reduce the power consumption compared to the means and the storage information processing means for non-placement detection. That is, the integrated value resetting means for non-mounting detection can suppress an increase in power consumption to a minimum as much as possible while having a simple configuration.

  Therefore, according to the sixth feature configuration, the placement state detection unit detects that the placement state is not placed in a state where the increase in power consumption is suppressed as much as possible and the configuration is not greatly complicated. When the state is switched to the state detecting state, the integrated value can be reset.

In addition to the sixth feature configuration, the seventh feature configuration of the present invention includes:
The non-mounting detection pulse generation unit,
When the previous placement state detection means switches from the state in which the previous placement state is detected to the state in which the non-placement state is detected instantaneously and then returns to the state in which the previous placement state is detected, the pulse The configuration is such that no signal is output.

  That is, when the previous placement state detection means switches from the state in which the previous placement state is detected to the state in which the non-placement state is detected instantaneously and then returns to the state in which the previous placement state is detected, Since the non-mounting detection pulse generation unit does not output a pulse signal, for example, after switching to a state in which the non-mounting state is instantaneously detected due to a disturbance or the like, the above-described mounting state is detected. Even when returning to a state, the pulse generator for non-mounting detection outputs a pulse signal to switch to a state where power is supplied and prevents the integrated value from being reset unexpectedly. it can.

  Therefore, according to the seventh characteristic configuration, it is possible to avoid the inconvenience that the integrated value is reset in a state in which the placement state detection unit has not switched to the state in which the non-placement state is detected due to a disturbance or the like. can do.

In addition to the sixth feature configuration or the seventh feature configuration, the eighth feature configuration of the present invention includes:
The integrated value resetting means for non-mounting detection,
The accumulated value is reset in the non-placement detection storage information processing means after the non-placement detection power supply unit is switched from the shut-off state to the power supply state by the pulse signal. The power supply unit for non-mounting detection is configured to switch from the power supply state to the cut-off state.

  That is, the non-mounting detection power supply unit is switched from the cut-off state to the power supply state by the pulse signal generated by the non-loading detection pulse generation unit, and the non-loading detection storage information processing means When the storage information processing means for non-placement detection resets the accumulated value, the stored information processing means resets the accumulated value. Since the power supply unit switches from the power supply state to the cut-off state, the state in which power is supplied to the storage information processing means for non-placement detection does not become unnecessarily long and consumes less power. can do.

  Therefore, according to the eighth characteristic configuration, the integrated value can be reset when the mounting state detection unit switches from the state in which the mounting state is detected to the state in which the non-mounting state is detected. Further, it becomes possible to further reduce the power consumption.

  According to a ninth feature configuration of the present invention, in addition to any one of the first feature configuration to the eighth feature configuration, the heating control unit detects the installation state when a heating start command is commanded by the heating command unit. It is configured to determine whether or not the heating start placement detection state is detected by the means, and the number of times that it is determined that the heating start placement detection state is When the integrated value of the number of times integrated as an indicator for determining the installation state progress and determining that the mounting detection state at the start of heating reaches the set number of times as the abnormality determination reference value, the abnormality countermeasure process is executed. It is in the point comprised as follows.

  In other words, the heating control means determines whether or not the heating start placement detection state in which the placement state is detected by the placement state detection means when the heating start command is commanded by the heating command means. When it is detected that the placement detection state at the start of heating is detected when the heating start command is issued, the placement state detection means is operating normally and the object to be heated is properly placed on the placement portion. It is assumed that there is a mounted state, or an abnormal state in which the mounted state detecting means is stuck in the mounted state.

  If the placement state detection means is operating normally and the object to be heated is properly placed on the placement part, then the user lifts the object to be heated and the object to be heated from the placement part. Since the non-mounting state is detected by the mounting state detecting means, the integrated value of the number of times determined to be the mounting detection state at the start of heating is reset.

  However, when the mounting state detection unit is in an abnormal state such as being stuck in a state where the mounting state is detected, the non-mounting state is not detected by the mounting state detection unit. The integrated value is not reset and continues to be integrated thereafter. Then, when the integrated value of the number of times that it is determined that the heating start is the mounting detection state reaches the set number of times as the abnormality determination reference value, the mounting state detection unit has a long state for detecting the mounting state. It is determined that the abnormal state has elapsed, and the abnormality countermeasure process is executed.

  Therefore, according to the ninth feature configuration, when the placement state detection unit is operating normally, the abnormality countermeasure process is not executed, and the placement state detection unit remains in a state of detecting the placement state. When it is in an abnormal state such as being stuck, it is possible to execute the abnormality countermeasure process accurately.

  According to a tenth feature configuration of the present invention, in addition to any one of the first feature configuration to the eighth feature configuration, the heating control unit may advance the time when the placement state is detected by the placement state detection unit. It is configured such that the abnormality countermeasure processing is executed when the integrated value is accumulated as an indicator for determining the state of passage and the accumulated value of the time reaches the abnormality determination set time as the abnormality determination reference value. is there.

  In other words, the heating control means integrates the time during which the placement state is detected by the placement state detection means as an index for determining the placement state progress, but the placement state detection means normally When operating, when the user lifts the object to be heated and removes the object to be heated from the placement part, the non-placed state is detected by the placement state detection means. The accumulated time value is reset.

  However, when the mounting state detection unit is in an abnormal state such as being stuck in a state where the mounting state is detected, the non-mounting state is not detected by the mounting state detection unit. Since the integrated value is not reset, the time during which the mounting state is detected by the mounting state detecting means continues to be integrated without being reset. Then, when the integrated value of the time reaches the abnormality determination set time as the abnormality determination reference value, the abnormality countermeasure processing is executed.

  Therefore, according to the tenth feature configuration, when the placement state detection unit is operating normally, the abnormality countermeasure process is not executed, and the placement state detection unit remains in a state of detecting the placement state. When it is in an abnormal state such as being stuck, it is possible to execute the abnormality countermeasure process accurately.

[First Embodiment]
Hereinafter, based on drawing, 1st Embodiment of the heating cooker which concerns on this invention is described.
As shown in FIG. 1, the gas stove as the heating cooker is constituted by a built-in type gas stove provided with a grill portion 3 provided with three stove burners 1a, 1b, 1c and a grill burner 2 (see FIG. 2). The three stove burners 1a, 1b, and 1c are configured by a standard burner 1a, a small burner 1b, and a high thermal power burner 1c.

  Also, a grill exhaust port 4 for exhausting combustion exhaust gas from the grill portion 3 is formed, and the top surface of the gas stove is covered with a glass top plate 5. A standard burner 1 a, small Corresponding to each of the burner 1b and the high thermal power burner 1c, the five virtues 6 are placed and supported as a placing portion for placing an object to be heated (a pan or the like) to be heated. On the back surface side of the top plate 5, the top surface display unit 70 that displays the fire power of each of the standard burner 1 a, the small burner 1 b and the high burner 1 c and the point fire extinguishing state of the grill burner 2 is visible through the top plate 5. Is provided.

  The top surface display unit 70 includes three top surface heat power display units 71 corresponding to the standard burner 1a, the small burner 1b, and the high heat power burner 1c, and a grill combustion display unit 73 corresponding to the grill burner 2, The top surface thermal power display unit 71 is configured to light up and display a number of LED lamps corresponding to the amount of combustion (thermal power) using a plurality of LED lamps as a level meter. The grill combustion display unit 73 is composed of one LED lamp, and when the grill burner 2 is ignited, the LED lamp is turned on.

  As shown in FIG. 1, on the front side of the gas stove, a manual operation unit S is provided for instructing the ignition and extinguishing of the standard burner 1a, the small burner 1b, the high thermal power burner 1c and the grill burner 2, the thermal power adjustment, and various settings. As shown in FIG. 2, the operation control unit H provided with a microcomputer and configured to execute various controls is based on the operation state instructed by the manual operation unit S. The burner 1b, the high thermal power burner 1c, and the grill burner 2 are controlled.

  As shown in FIG. 2, each of the standard burner 1a, the small burner 1b, and the high thermal power burner 1c is provided with a spark plug 7 and a thermocouple 8 for detecting an ignition state. It is composed of a double-sided burner having a pair of lower surface burners 2b, 2c, and each of the upper surface burner 2a and the pair of left and right lower surface burners 2b, 2c has a spark plug 7 and a thermocouple 8 for detecting an ignition state. Is provided.

Further, in each of the standard burner 1a and the high thermal power burner 1c, as shown in FIG. 2 and FIG. 3 (however, only the standard burner 1a is shown in FIG. 3), the object to be heated is placed on the virtues 6. A placement state detection unit D is provided as a placement state detection means for detecting whether the placement state is a placement state or a non-placement state that is not placed.
The placement state detection unit D is pushed down as the bottom of the object to be heated placed on the virtues 6 comes into contact with the placement state detection position for detecting the placement state and the placement state. An up-and-down movable part 9b that is movable up and down over a non-placed state detection position for detecting the non-placed state above the detection position and that is urged to return to the non-placed state detected position. The telescopic mechanism 9 having the above and the vertical movable portion 9b is turned on by being positioned at the placement state detection position, and the vertical state is turned off by the vertical movable portion 9b being located at the non-placement state detection position. The to-be-heated object detection switch 10 is provided.

  As shown in FIG. 3, the telescopic mechanism 9 is movable up and down in a state where the vertically movable portion 9b is urged upward by a spring (not shown) to the guide support portion 9a fixed to the casing. It is configured to support. When the object to be heated is not placed on the virtues 6, the non-mounting state in which the up and down movable portion 9 b is protruded from the upper end portion for receiving the object to be heated in the virtues 6 by the return biasing force. The stretched state returns to the state detection position, and the heated object detection switch 10 is turned off. In addition, as the object to be heated is placed on the virtues 6, the vertically movable portion 9b is pushed down by the bottom of the object to be heated and is in the contracted state positioned at the above-described installation state detection position, and the object to be heated detection switch 10 is turned on.

  That is, in the state where the heated object detection switch 10 is on, the state where the up and down movable portion 9b is located at the previous placement state detection position is detected, the previous placement state is detected, and the heated object detection switch 10 is turned off. In this state, a state in which the vertically movable portion 9b is located at the non-mounted state detection position is detected, and the non-mounted state is detected. In addition, although the said expansion-contraction mechanism 9 is provided in the said small burner 1b similarly to each of the standard burner 1a high-heat-power burner 1c, the to-be-heated object detection switch 10 is not provided.

  As shown in FIGS. 2 and 3, a temperature sensor 11 is provided in the upper end of the vertically movable portion 9b of the telescopic mechanism 9 corresponding to each of the standard burner 1a, the small burner 1b, and the high heating power burner 1c. The temperature sensor 11 is configured to detect the temperature of the object to be heated in a state where the bottom of the object to be heated placed is in contact with the upper end of the vertically movable portion 9b. Although not shown, the grill unit 3 is provided with a temperature sensor that detects the temperature in the grill.

  The gas supply configuration to the standard burner 1a, the small burner 1b, the high thermal power burner 1c, and the grill burner 2 will be described. As shown in FIG. 2, an original gas solenoid valve 13 is provided in the original gas supply path 12, The main gas supply path 12 is branched into four systems: a standard burner branch path 14a, a small burner branch path 14b, a high-thermal-power burner branch path 14c, and a grill burner branch path 14d. The branch path 14d further branches into a branch path for the upper surface burner and a branch path for the lower surface burner, and each of the branch paths includes a flow path 15 with an orifice of and a bypass solenoid valve 16. 17 is provided. In each of the standard burner branch path 14a, the small burner branch path 14b, the high thermal power burner branch path 14c, and the grill burner branch path 14d, the amount of gas is adjusted to adjust the combustion amount (thermal power) of each burner. ) Is provided.

  On the front side of the gas stove, an ignition command state for instructing an ignition command for the burners 1a, 1b, 1c and a fire extinguishing command for the burners 1a, 1b, 1c corresponding to the standard burner 1a, the small burner 1b, and the high thermal power burner 1c, respectively. A point-extinguishing command unit 28 that can be switched to a fire-extinguishing command state for commanding, a manually operated combustion amount adjusting operation unit 29 for commanding adjustment of the combustion amount (thermal power) of the burners 1a, 1b, and 1c, and cooking settings Is provided, and a setting input panel 60 is provided for instructing the grill burner 2 to perform ignition, extinguishing, and thermal power adjustment. The setting input panel 50 and the setting input panel 60 are of an open / close type, and the setting input panel 60 is provided with a point fire switch (not shown) for instructing the grill burner 2 to ignite and extinguish. Although not shown in the setting input panel 50, for example, for automatically adjusting the combustion amount (thermal power) of the burner so that the temperature of the heated object becomes a preset temperature, such as the temperature of tempura oil. A setting switch for automatic cooking for setting the automatic cooking mode is provided.

  Although not described in detail, the point fire extinguishing command unit 28 is provided with a cylindrical rotation operation unit 31 that can be held and retracted at each position between the push-in position and the protruding position, and provided inside when switched to the protruding position. The fire extinguisher switch 32 (see FIG. 2) is turned on to command ignition, and when switched to the push-in position, the fire extinguishing switch 32 is turned off to command fire extinguishing. Further, the combustion amount adjustment operation unit 29 is configured to adjust the change in the burner combustion amount by rotating the rotation operation unit 31 at the protruding position. Incidentally, each of the standard burner 1a and the high thermal power burner 1c is configured so that its combustion amount can be adjusted to a five-stage set combustion amount, and the small burner 1c has its combustion amount set to a three-stage set combustion amount. It is configured to be adjustable.

  Then, the operation control unit H ignites corresponding ones of the burners based on the ignition command of the point extinguishing switch 32, and extinguishes the corresponding burners based on the extinguishing command of the point extinguishing switch 32. And the operation of the flow rate control valve 18 is controlled so as to adjust the fuel supply amount based on the command of the combustion amount adjusting operation unit 29.

  Further, as shown in FIG. 2, a speaker 37 is provided as a notifying means for notifying various information by voice, and the operation control unit H is configured to notify the various information by the speaker 37. .

  Therefore, in this embodiment, each of the standard burner 1a and the high thermal power burner 1c corresponds to the heating means A, and the point fire extinguishing switch 32 corresponds to the heating command means. Combustion control process as a heating operation process for starting the heating operation of the heating means A by the heating start command by the switch 32 and stopping the heating operation of the heating means A by the heating stop command by the point fire extinguishing switch 32, and mounting state detection The heating control means 100 is configured to execute the cooking heat treatment for controlling the heating operation of the heating means A based on the detection information of the part D.

  Then, whether or not the heating control means 100 is in the heating start placement detection state in which the placement state is detected by the placement state detection unit D when the heating start command by the point fire extinguishing switch 32 is commanded. In the state that is configured to be determined and the mounting state is detected by the mounting state detection unit D, as an index for determining the mounting state that appears irregularly as time passes, The number of times that it is determined that the mounting detection state at the start of heating is integrated, and the integrated value Nx of the number of times that it is determined that the mounting detection state is at the start of heating is the set number of times as the abnormality determination reference value When Ns is reached, the abnormality countermeasure processing is executed. Then, the integrated value Nx of the number of times determined to be the mounting detection state at the start of heating is written and stored in the nonvolatile memory Me as the storage means, and the information can be retained even if the power supply is stopped. ing. The nonvolatile memory Me is configured using, for example, an EEPROM.

  Further, in this stove, when the power-on condition is satisfied by the command of the point fire switch 32, power is supplied to the heating control means 100, and when the power-off condition is satisfied by the command of the point fire switch 32, the heating control means 100 is supplied. The power supply control means PK which interrupts | blocks supply of the electric power to is provided.

Next, the power supply control means PK will be described with reference to FIG.
In FIG. 4, the power supply state from the power supply 40 to the operation control unit H is controlled based on the operation of the point fire switch 32 corresponding to the standard burner 1a and the detection information of the mounting state detection unit D corresponding to the standard burner 1a. A specific circuit configuration is shown.
An intermittent switching circuit 41 (power supply unit) that can be switched between a power supply state in which power is supplied from the power supply 40 to the operation control unit H and a cutoff state in which the power supply is cut off is provided. Power on / off transistor Tr1 for interrupting the power supply line to the operation control unit H, on-operation transistor Tr2 for turning on the power on / off transistor Tr1 when the point-off switch 32 is turned on, operation control When a power holding signal instructed from the section H is output, it is configured to include a self-holding transistor Tr3 and the like for switching the power interruption transistor Tr1 to an on state.

  When the power extinguishing switch 32 is turned on in the state where the power interrupting transistor Tr1 is turned off and no electric power is supplied to the operation control unit H, that is, in the operation standby state, the intermittent switching circuit 41 is turned off. Switches to an on state, and switches to a state in which power is supplied to the operation control unit H. The operation control unit H is configured to output a power holding signal from the holding signal output terminal a when electric power is supplied from the power source 40 and starts a control operation. The intermittent switching circuit 41 is used for intermittent power supply by the power holding signal. The transistor Tr1 can be kept on.

  A detection circuit 42 for detecting the operation state of the point fire extinguishing switch 32 is provided. That is, the command transistor Tr4 that is turned on when the detection signal output terminal d of the operation control unit H is set to high level, and the output terminal of the fire extinguishing switch 32 and the operation control unit H of the operation control unit H are turned on by turning on the command transistor Tr4. The operation control unit H is configured to turn on the intermittent transistor Tr5 by setting the detection signal output terminal d to a high level, and includes an intermittent transistor Tr5 that intermittently connects the detection wiring 46 that connects to the detection terminal e. When in the state, the potential of the output terminal of the point fire switch 32 can be detected to detect whether the point fire switch 32 is in the on state or the off state.

  In FIG. 4, only the power control circuit for the standard burner 1a is shown as a representative, and other circuits are omitted, but the operation control unit H is connected to each of the burners 1a, 1b, 1c, and 2 above. A corresponding circuit is provided for the corresponding four point fire extinguishing switches 32, and power is supplied to the operation control unit H when at least one of the four point fire extinguishing switches 32 is turned on. . Further, when any one of the four point fire extinguishing switches 32 is turned on and the operation control unit H enters a state of instructing a heating start command, the operation control unit H outputs a power holding signal on the assumption that the power-on condition is satisfied. When all of the four point fire extinguishing switches 32 are turned off, that is, when a heating stop command is instructed, the output of the power holding signal is stopped assuming that the power-off condition is satisfied. It is configured.

  Accordingly, the power management means 101 for managing the power supply state by the intermittent switching circuit 41 is configured using the operation control unit H, and the power control means PK is configured by the power management means 101 and the intermittent switching circuit 41. Yes.

  Then, when the power-off condition is satisfied and the power supply control unit PK cuts off the supply of power to the heating control unit 100, the mounting state detection unit D mounts from the state in which the non-mounting state is detected. When the state is switched to the state detecting state, there is provided mounting value resetting means SR1 for resetting the integrated value Nx of the number of times when it is determined that the mounting detection state is in the heating start.

  In addition, when the power-off condition is satisfied and the power control unit PK cuts off the supply of power to the heating control unit 100, the mounting state detection unit D is not mounted from the state of detecting the mounting state. When switching to a state detecting state, there is provided non-mounting detection integrated value resetting means SR2 for resetting the integrated value Nx.

  The integrated value resetting means SR1 for position detection described above is a storage information processing means 102 for resetting the stored contents stored in the nonvolatile memory Me, and a power supply state for supplying power from the power source 40 to the storage information processing means 102 And an intermittent switching circuit 41 as a power supply section that can be switched between a power supply and a cut-off state, and a state where power is supplied from the power supply 40, and a placement state detection unit D detects a non-placement state When it switches from the state to the state to detect the mounting state, it is configured to include a pulse generator 45A for mounting detection that outputs a pulse signal for switching the intermittent switching circuit 41 to the power supply state. 102, when the intermittent switching circuit 41 is switched from the cut-off state to the power supply state by the pulse signal, the integration stored in the nonvolatile memory Me It is configured to reset the Nx, and, after resetting the integrated value Nx, has an intermittent switching circuit 41 from the power supply state to switch to the blocked state.

  The integrated value resetting means SR2 for non-placement detection is configured such that the stored information processing means 102 and the intermittent switching circuit 41 are also used as the integrated value resetting means SR1 for placement detection. Further, when the power supply 40 is provided in a state where power is supplied and the mounting state detection unit D switches from the state where the mounting state is detected to the state where the mounting state is detected, the intermittent switching circuit 41 is supplied with power. A non-mounting detection pulse generator 45B that outputs a pulse signal for switching to a state is provided. The stored information processing means 102 is stored in the non-volatile memory Me when the intermittent switching circuit 41 is switched from the interrupted state to the power supply state by a pulse signal from the non-mounting detection pulse generator 45B. The integrated value Nx is configured to be reset, and after the integrated value Nx is reset, the intermittent switching circuit 41 is switched from the power supply state to the cutoff state.

  Therefore, in this embodiment, the intermittent switching circuit 41 is used as the power control means PK, the placement detection integrated value reset means SR1, and the non-placement detection integrated value reset means SR2. The storage information processing means 102 configured using the operation control unit H is also used as the integrated value resetting means SR1 for placement detection and the integrated value resetting means SR2 for non-placement detection. It has become.

  Further, each of the integrated value resetting means SR1 for placement detection and the integrated value resetting means SR2 for non-placement detection is switched from the shut-off state to the power supply state by a pulse signal, and then stored in the information processing means 102. When the integrated value is reset at, the power supply state is switched to the cutoff state.

Next, a specific circuit configuration will be described with reference to FIG.
When the heated object detection switch 10 in the loaded state detection unit D is switched from the on state (mounted state) to the off state (non-mounted state), and the heated object detection switch 10 is turned off (not mounted). Each time when it is switched from the mounting state) to the on state (mounting state), a pulse generation circuit 45 is provided that generates a pulse signal only once. When the pulse generation circuit 45 outputs a pulse signal, The power supply interrupting transistor Tr1 is turned on only while the pulse signal is output.

  The pulse generating circuit 45 outputs a pulse signal only once when the object detection switch 10 is switched from the off state to the on state, and the first pulse generating unit 45A as a pulse generating unit for detecting the position described above. And a second pulse generation unit 45B as the non-mounting detection pulse generation unit that outputs a pulse signal only once when the heated object detection switch 10 is switched from the on state to the off state. It is configured.

  The first pulse generating unit 45A is provided with a CR coupling circuit in which a resistor R1, a capacitor C1, and a resistor R2 are connected in series between one end side terminal of the object to be heated detection switch 10 and a ground line. A first pulse transistor Tr6 having an intermediate point connected to the resistor R2 connected to the base terminal, an emitter terminal connected to the ground portion, and a collector terminal connected to the base terminal of the power interrupt transistor Tr1 via the resistor Are connected between the one end side terminal of the heated object detection switch 10 and the ground line in series, and between the base terminal of the first pulse transistor Tr6 and the ground portion. And a capacitor discharging diode d1 and the like.

Next, the operation of the first pulse generator 45A will be described.
If the object to be heated detection switch 10 is in the OFF state, the capacitor C1 is not charged, and the charged charge is discharged through the resistors R1, R3, R4 and the diode d1, so the first pulse transistor Tr6 is in the OFF state. To maintain. When the heated object detection switch 10 is switched from the OFF state to the ON state, a voltage is suddenly applied to the CR coupling circuit including the resistor R1, the capacitor C1, and the resistor R2, and the capacitor C1 is charged. A temporary current (pulse current) flows, and the first pulse transistor Tr6 is temporarily switched on, and accordingly, the power interrupt transistor Tr1 is switched on.
When the power interruption transistor Tr1 is switched on, power is supplied to the operation control unit H. When the operation control unit H is activated, the operation control unit H outputs the power holding signal as described above. Even if the power supply disappears, the power interruption transistor Tr1 is kept in the on state.

  Then, after the placement detection pulse generator 45A switches from the state in which the placement state detection unit D detects the non-placement state to the state in which the placement state is instantaneously detected, the non-placement state is detected. When returning to the state of detecting the mounting state, the pulse signal is not output.

  Specifically, when the object to be heated detection switch 10 is switched, for example, from the state in which the placement state detection unit D detects the non-placement state instantaneously due to malfunction due to chattering or disturbance of the switch, In the case where there is a case where the non-mounting state is detected after switching to the state for detecting the placement state, the power pulse transistor Tr1 is turned on because the first pulse transistor Tr6 becomes conductive. The operation control unit H assumes that the time during which the power supply interrupting transistor Tr1 is kept on is assumed from the time constant of the CR coupling circuit including the resistor R1, the capacitor C1, and the resistor R2. The power supply signal is not output and the self-holding transistor Tr3 is not turned on and the power supply is not self-held. It has been made. Therefore, in that case, the integrated value Nx is not reset.

The second pulse generator 45B has an intermediate portion of the resistors R3 and R4 connected to one terminal of the heated object detection switch 10 connected to a base terminal, an emitter terminal connected to a ground portion, and a collector. The terminal is connected to the other end side terminal of the object to be heated detection switch 10 via two resistors R5 and R6, the intermediate portion of the second pulse transistor Tr7, the resistors R5 and R6, and the base terminal via the capacitor C2. A third pulse transistor Tr8 and a base terminal of the third pulse transistor Tr8 connected to each other, an emitter terminal connected to the ground portion, and a collector terminal connected to the base terminal of the power interrupt transistor Tr1 via a resistor. A capacitor discharging diode d2 and a resistor R7 connected in parallel with the grounding portion are provided.
Accordingly, the resistor R3 and the resistor R4 are used as both the first pulse generator 45A and the second pulse generator 45B.

Next, the operation of the second pulse generator 45B will be described.
If the to-be-heated object detection switch 10 is in an on state, the second pulse transistor Tr7 is in a conducting state. In this state, the capacitor C2 is not charged, and the charged charge is discharged through the resistor R6, the second pulse transistor Tr7, and the diode d2, so that the third pulse transistor Tr8 maintains the OFF state. When the heated object detection switch 10 is switched from the on state to the off state, the second pulse transistor Tr7 is cut off, and a voltage is rapidly applied to the CR coupling circuit including the resistor R5, the capacitor C2, and the resistor R7. Is applied and the capacitor C2 is charged, so that a transient temporary current (pulse current) flows, and the third pulse transistor Tr8 is temporarily switched on, and accordingly, the power interrupt transistor Tr1 is turned on. Switch to. As a result, as in the case of the first pulse generator 45A, the power interrupt transistor Tr1 is switched to the on state and the on state is maintained.

  Then, the non-mounting detection pulse generator 45B switches from the state in which the mounting state detection unit D detects the mounting state to the state in which the non-mounting state is instantaneously detected. When returning to the state of detecting the mounting state, the pulse signal is not output.

  Specifically, when the object to be heated detection switch 10 is switched, for example, due to a malfunction due to chattering or disturbance of the switch, the mounting state detection unit D instantaneously does not mount the mounting state from the state in which the mounting state is detected. After switching to the state for detecting the placement state, the state for detecting the placement state may return to the state for detecting the placement state, and the power interrupting transistor Tr1 is turned on because the third pulse transistor Tr8 is turned on. Although the operation control unit H is switched to the state, the operation control unit H is assumed to have a time during which the power-on / off transistor Tr1 is kept on from the time constant of the CR coupling circuit including the resistor R5, the capacitor C2, and the resistor R7. When shorter, the power supply holding signal is not output, the self-holding transistor Tr3 is not turned on, and the power supply is not self-held. It has been. Therefore, in that case, the integrated value Nx is not reset.

In the pulse generation circuit 45, while the heated object detection switch 10 detects the ON state, a current flows through the resistors R3, R4, R5, etc. in order to make the second pulse transistor Tr7 conductive, Even if the power supply to the operation control unit H is cut off, power is consumed, but by using those having a large resistance value, the power consumption is minimized. A low power consumption type circuit can be configured.
Instead of switching the charge / discharge of the capacitor C2 by using the second pulse transistor Tr7, a low power consumption type CMOS gate IC may be used.

  Then, the operation control unit H determines that it is activated by the pulse current generated by the pulse generation circuit 45 if none of the fire extinguishing switches 32 is turned on when the power supply is started and activated. When it is determined as such, it is configured to reset the integrated value Nx of the number of times that it is determined that the heating start time placement detection state is stored in the nonvolatile memory Me. Further, after resetting the integrated value Nx of the number of times that the operation control unit H has determined that the mounting detection state at the start of heating is detected, the operation control unit H stops outputting the power holding signal and turns off the power supply interrupting transistor Tr1. It is configured to switch to a state.

  Further, a detection circuit 53 for detecting the state of the placement state detection unit D based on the potential of the ground-side terminal in the heated object detection switch 10 is provided. The detection circuit 53 includes a command transistor Tr9 that is turned on when the detection signal output terminal b of the operation control unit H is set to a high level, and a grounding side of the object to be heated detection switch 10 when the command transistor Tr9 is turned on. And the intermittent transistor Tr10 for intermittently connecting the detection wiring 55 for connecting the detection terminal c of the operation control unit H to the operation control unit H. The operation control unit H sets the detection signal output terminal b to the high level. Thus, when the intermittent transistor Tr10 is turned on, the potential of the ground-side terminal in the heated object detection switch 10 is detected, and whether the placement state detection unit D is in the placement state or the non-placement state. Can be detected.

Next, the control of the operation control unit H will be described.
The control according to the present invention is executed for the standard burner 1a and the high thermal power burner 1c. However, the control operation of the operation control unit H for the standard burner 1a and the high thermal power burner 1c is performed. In the following description, the control operation targeting the standard burner 1a will be described, and the description of the control operation targeting the high thermal power burner 1c will be omitted.
The original gas solenoid valve 13 is opened when the point fire switch 32 corresponding to at least one of the standard burner 1a, the small burner 1b, the high thermal power burner 1c and the grill burner 2 is in the ON state. When all of the point fire extinguishing switches 32 corresponding to the 1a, the small burner 1b, the high thermal power burner 1c, and the grill burner 2 are in the OFF state, the valve is maintained in the closed state. A description of the control is omitted.

The control operation of the operation control unit H will be described below based on the flowcharts shown in FIGS.
When power is supplied from the power source 40, the operation control unit H outputs a power holding signal for holding the power-on state to the intermittent switching circuit 41 (step 1). At that time, when all four point fire extinguishing switches 32 are not turned off and power supply is started by operating the point fire extinguishing switch 32 corresponding to the standard burner 1a (step 2), the count accumulated by the counter is counted. If the value Nx has not reached the set number of times Ns (for example, 10 times) (step 3), then the mounting state is detected by the mounting state detection unit D (this state is the mounting detection at the start of heating). Count value of the counter is incremented (steps 4 and 5), and when the non-mounting state is detected by the mounting state detection unit D, the counter count value Nx is reset to zero. (Step 6). The count value Nx of this counter corresponds to the integrated value of the number of times that it has been determined that the heating start placement detection state.

  In step 3, when the count value Nx integrated by the counter reaches the set number Ns, the speaker 37 is notified of failure information by voice such as “failure has occurred” and the standard burner 1a. The front thermal power display unit 36 and the top thermal power display unit 71 corresponding to the same are blinked in the same manner to perform notification processing for notifying that an abnormality has occurred (step 10). The operation by is not accepted (step 11). That is, the processes in steps 10 and 11 correspond to the abnormality countermeasure process.

  Next, a combustion control process is executed (step 7). In this combustion control process, as shown in FIG. 6, if there is an ignition command for the standard burner 1a, the flow control valve 18 is opened and a drive signal is given to the spark plug 7 to perform the ignition operation. Ignition processing for igniting is performed (steps 71 and 72). If the automatic cooking mode is not set, the opening degree of the flow control valve 18 is adjusted so that the combustion amount of the standard burner 1a becomes the combustion amount according to the command of the combustion amount adjustment operation unit 29 (step 73- 1, 73-2) When the automatic cooking mode is set, the opening degree of the flow control valve 18 is set so that the temperature of the heated object detected by the temperature sensor 11 becomes a preset temperature. Is automatically adjusted to the amount of combustion (thermal power) of the standard burner 1a (step 73-3). If there is a fire extinguishing command, fire extinguishing processing is executed (steps 74 and 79).

  When the placement state detection unit D detects a state where there is no object to be heated (non-placement state) during the combustion operation, the count value Nx of the counter is reset to zero, and the combustion amount of the standard burner 1a is set to 5 The opening degree of the flow control valve 18 is adjusted so that the combustion amount in the absence corresponding to the heating power one stage higher than the lowest heating power of the stage is adjusted, and the front heating power display corresponding to the standard burner 1a is displayed. By flashing similarly the part 36 and the top | upper surface thermal-power display part 71, it is alert | reported that it is an abnormal state that the standard burner 1a is burning in the state in which the to-be-heated material is not mounted in Gotoku 6 (step). 75, 75-1, 76, 77).

  Further, the combustion amount of the standard burner 1a is reduced to the combustion amount in the absence until the elapsed time after the placement state detection unit D detects the state in which there is no object to be heated reaches the absence determination time. (Step 78), and during that time, when the placement state detection unit D detects the state with the object to be heated (placement state), it returns to the original thermal power and continues the combustion state (step 75, 73-1, 73-3, 74), if the placement state detection unit D detects a state in which there is no object to be heated even after the absence determination time has elapsed, a fire extinguishing process is executed (step 79). . The process of adjusting the heating power based on the detection result of the placement state detection unit D corresponds to the cooking heat process.

  When all the fire extinguishing switches 32 are turned off, the output of the power holding signal for holding the power-on state output to the intermittent switching circuit 41 is stopped and the operation of holding the power-on state is canceled, and the intermittent operation is interrupted. The switching circuit 41 is switched to the cut-off state to turn off the power (steps 8 and 9).

  When all the point fire extinguishing switches 32 are turned off and the operation control unit H is in the power-off state, the heated object detection switch 10 is switched from the on state to the off state, and the heated object detection switch Each time when 10 is switched from the OFF state to the ON state, a pulse is generated in the pulse generation circuit 45, the intermittent switching circuit 41 is switched to the power supply state, and power supply to the operation control unit H is started. Thus, the operation control unit H outputs a power holding signal (step 1). In this case, since none of the point fire extinguishing switches 32 is turned on, the count value Nx of the counter is reset to zero (step 13), the output of the power holding signal is stopped, and the power is turned on. The operation to be performed is released, and the intermittent switching circuit 41 is switched to the cut-off state to turn off the power (step 14).

[Second Embodiment]
Next, a second embodiment of the heating cooker according to the present invention will be described.
The second embodiment is the same as the first embodiment except that the configuration of the heating control unit is different. Therefore, only the different configuration will be described, and the description of the same configuration will be omitted.

  That is, in this embodiment, the heating control means uses the time when the mounting state is detected by the mounting state detection unit as an index for determining the mounting state progress that appears regularly with time. The abnormality countermeasure process is executed when the accumulated value reaches the abnormality determination set time as the abnormality determination reference value.

  Hereinafter, the control operation of the operation control unit H will be described. As shown in FIG. 7, when power is supplied from the power source 40, a power holding signal for holding the power-on state is output to the intermittent switching circuit 41 ( Step 21) When all four point fire extinguishing switches 32 are not turned off, in other words, when the supply of electric power is started by operation of any one of the point fire extinguishing switches 32 (Step 22), then the placement state detection unit If the placement state is detected in D, the time during which the placement state is detected by the placement state detection unit D is accumulated by a timer (steps 23 and 24), and the placement state detection unit D does not. If the mounting state is detected, the time integration value Tx is reset to zero (step 25). When the integrated value Tx of the time during which the mounting state is detected by the mounting state detection unit D integrated by the timer reaches the abnormality determination set time Ts, the same abnormality countermeasure processing as in the first embodiment is performed. Execute (steps 26, 30, 31). When the integrated value Tx has not reached the abnormality determination set time Ts, the same combustion control process as in the first embodiment is executed (step 27).

  Further, when any of the point fire extinguishing switches 32 is not turned on when power supply to the operation control unit H is started, the integrated value Tx of the timer is reset to zero and the power is turned off (step 33, The point 34) is the same as in the first embodiment.

[Another embodiment]
Hereinafter, other embodiments are listed.

(1) In the above-described embodiment, the number of times that it is determined that the mounting detection state at the start of heating is determined as an index for determining the mounting state progress that appears regularly or irregularly as time passes, The time during which the placement state is detected is integrated, but instead of such a configuration, the burner combustion amount and the like in the state where the previous placement state is detected may be integrated. .

(2) In the above-described embodiment, the storage information processing means that is also used as the integrated value resetting means for the placement detection and the cumulative value resetting means for the non-placement detection is configured using the operation control unit, and The power supply unit that is also used as the integrated value resetting means for detecting the placement and the integrated value resetting means for detecting the non-placement is configured to use the intermittent switching circuit constituting the power supply control means. However, instead of such a configuration, it may be provided as a configuration different from the operation control unit and the power supply control means, and is not limited to the configuration of the above embodiment.

  Further, in the above embodiment, the storage information processing means for detecting the placement described above and the storage information processing means for detecting the non-placement are combined, and the power supply unit for detecting the placement described above and the non-placed storage information processing means. Although it is configured to also serve as a power supply unit for detection, a configuration may be employed in which these are provided separately from each other.

(3) In the above embodiment, when each of the power supply units is switched from the shut-off state to the power supply state by the pulse signal, the accumulated information is reset by the stored information processing unit. The configuration for switching from the power supply state to the cut-off state is illustrated, but the configuration is not limited to such a configuration, and the power supply state is continued even after the pulse signal is switched from the cut-off state to the power supply state. It is good also as a simple structure.

(4) In the embodiment described above, the integrated value resetting means SR1 for placement detection and the integrated value resetting means SR2 for non-placement detection are provided, respectively. A configuration in which only the integrated value resetting means SR1 for placement detection is provided and the integrated value resetting means SR2 for non-placement detection is not provided, for example, a configuration in which the second pulse generation unit 45B in the above embodiment is not provided. Good.

(5) In the above embodiment, each of the placement detection pulse generation unit and the non-placement detection pulse generation unit is configured so that the placement state detection unit instantaneously switches the detection state. When the operation control unit is configured not to output the pulse signal when the state is restored to the state, the time during which the operation control unit continues to turn on the power supply interrupt transistor Tr1 is determined from the resistor R1, the capacitor C1, and the resistor R2. When the time is shorter than the time expected from the time constant of the CR coupling circuit, the self-holding transistor Tr3 is not turned on, and the power supply is not self-held, but instead of such a configuration, In the case where the detection state is switched instantaneously for a time shorter than the set time for the power on / off transistor Tr1 to remain on, the pulse signal is not output. Configuration and the like comprising a signal processing circuit for use, can be implemented in various forms.

(6) In the above embodiment, as the abnormality countermeasure processing, the notification processing for notifying that there is an abnormality and the processing for not accepting the operation by the command of the fire extinguishing switch are performed. For example, a notification process for prompting an operation to lift the fire extinguisher may be performed, and after that, if a non-mounting state is not detected even after a set time has elapsed, a process of not accepting an operation based on a command from the fire extinguishing switch may be performed.

(7) In the above-described embodiment, the placement state detection unit includes the vertical movable unit and the object to be heated detection switch. For example, the magnet is distributed and arranged on both lateral sides of the vertical movable unit. And a reed switch, or a reflective or transmissive optical sensor or the like.

(8) In the above embodiment, a gas stove using a burner that uses gas as fuel as a heating cooker has been described. However, the heating cooker uses an electric heater, an electromagnetic induction heating unit, or the like as a heating unit. Also good.

Perspective view of stove Block diagram showing stove control configuration Vertical section of the stove near the burner The figure which shows the electric power supply composition to the operation control section The figure which shows the flowchart of control action The figure which shows the flowchart of control action The figure which shows the flowchart of control action

Explanation of symbols

6 Placement unit 32 Heating command means 40 Power supply 41 Power supply unit 45A Placement detection pulse generator 45B Non-placement detection pulse generator 100 Heating control means 102 Storage information processing means A Heating means D Placement state detection Means Me Storage means PK Power supply control means SR1 Integration value resetting means for placement detection SR2 Integration value resetting means for non-placement detection

Claims (10)

Placement that detects whether the object to be heated is placed on the placement part on which the object to be heated heated by the heating means is placed or is not placed. State detection means;
A heating operation process for starting a heating operation of the heating unit by a heating start command by the heating command unit and stopping a heating operation of the heating unit by a heating stop command by the heating command unit, and detecting the installation state detecting unit Heating control means for performing a cooking heat treatment for controlling the heating operation of the heating means based on the information;
When the power-on condition is satisfied by the heating start command of the heating command means, power is supplied from the power source to the heating control means, and when the power-off condition is satisfied by the heating stop command of the heating command means, the power is supplied to the heating control means. Power supply control means for cutting off the supply of power,
The heating control means
In the state in which the previous placement state is detected by the previous placement state detection means, an indicator for determining the placement state progress that appears regularly or irregularly with the passage of time is integrated and the integrated value is obtained. The integrated value calculation process for resetting the integrated value when the non-mounted state is detected by the obtained mounting state detecting means, and the integrated value integrated by the integrated value calculating process is the reference value for abnormality determination A heating cooker configured to perform an abnormality countermeasure process when the
When the power-off condition is satisfied and the power supply control unit cuts off the supply of power to the heating control unit, the installation state detection unit detects from the state in which the non-installation state is detected. When the state is switched to a state for detecting a state, a cooking device provided with a placement detection integrated value resetting means for resetting an integrated value obtained by integrating the above-mentioned placement state progress determining index. Storage means for storing an integrated value obtained by integrating the indicator for determining the standing state progress described above,
The integrated value resetting means for the position detection described above is
Storage information processing means for mounting detection for resetting the storage content stored in the storage means;
A power supply unit for placement detection that can be switched between a power supply state for supplying power from the power source to the storage information processing means for placement detection and a cut-off state for cutting off the power supply;
When the power is supplied from the power source and the mounting state detection means switches from the state of detecting the non-mounting state to the state of detecting the mounting state, the power supply unit for detecting the mounting position And a pulse generator for mounting detection that outputs a pulse signal for switching to a power supply state,
The stored information processing means for detecting the position described above, the integrated value stored in the storing means when the power supply unit for detecting the position is switched from the cut-off state to the power supply state by the pulse signal. The cooking device according to claim 1, wherein the cooking device is configured to be reset. The pulse detector for the above-mentioned position detection is
When the previous placement state detection means switches from the state of detecting the non-placement state to the state of detecting the placement state instantaneously and then returning to the state of detecting the non-placement state, The cooking device according to claim 2, wherein the cooking device is configured not to output a pulse signal. The integrated value resetting means for the position detection described above is
When the integrated value is reset by the storage information processing means after the power supply unit for detecting the position is switched from the cut-off state to the power supply state by the pulse signal, the position detecting The cooking device according to claim 2 or 3, wherein a power supply unit is configured to switch from the power supply state to the shut-off state.   When the power-off condition is satisfied and the power supply control unit cuts off the supply of power to the heating control unit, the placement state detection unit detects the placement state from the state in which the placement state is detected. 4. The non-mounting detection integrated value resetting means for resetting an integrated value obtained by integrating the above-described mounting state progress determining index when the state is switched to a state detecting state is provided. The heating cooker according to item 1. Storage means for storing an integrated value obtained by integrating the indicator for determining the standing state progress described above,
The integrated value resetting means for non-mounting detection,
Storage information processing means for non-placement detection for resetting the storage content stored in the storage means;
A power supply unit for non-placement detection that can be switched between a power supply state for supplying power from the power source to the storage information processing means for non-placement detection and a cut-off state for shutting off the power supply;
The power supply unit is changed to a power supply state when the power supply unit is switched from a state in which power is supplied from a power source and the mounting state detection means detects the mounting state to a state in which the non-mounting state is detected. A non-mounting detection pulse generating unit that outputs a pulse signal for switching,
The storage information processing means for non-placement detection is configured to store the integration stored in the storage means when the non-placement detection power supply unit is switched from the shut-off state to the power supply state by the pulse signal. 6. A cooker according to claim 5, configured to reset the value. The non-mounting detection pulse generation unit,
When the previous placement state detection means switches from the state in which the previous placement state is detected to the state in which the non-placement state is detected instantaneously and then returns to the state in which the previous placement state is detected, the pulse The cooking device according to claim 6, wherein the cooking device is configured not to output a signal. The integrated value resetting means for non-mounting detection,
The accumulated value is reset in the non-placement detection storage information processing means after the non-placement detection power supply unit is switched from the shut-off state to the power supply state by the pulse signal. The cooking device according to claim 6 or 7, wherein the non-mounting detection power supply unit is configured to switch from the power supply state to the cut-off state. The heating control means
It is configured to determine whether or not it is a heating start placement detection state in which the previous placement state is detected by the previous placement state detection means when a heating start command is commanded by the heating command means, and , The number of times determined to be the placement detection state at the start of heating is integrated as an index for determining the progress of the placement state, and the integrated value of the number of times determined to be the placement detection state at the start of heating is The cooking device according to any one of claims 1 to 8, wherein the abnormality countermeasure process is executed when a set number of times as a reference value for abnormality determination is reached. The heating control means
The time for which the above-mentioned placement state is detected by the above-mentioned placement state detection means is integrated as an indicator for the above-described placement state progress determination, and the integrated value of the time is set for abnormality determination as the reference value for abnormality determination The cooking device according to any one of claims 1 to 8, wherein the abnormality countermeasure process is executed when time is reached.

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