JP2014099253A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooker capable of indicating available remaining capacity of a storage battery and available remaining time using the thermal power.SOLUTION: A remaining time display section 9 displays remaining capacity value of a storage battery 6 and a heating remaining time which is determined based on a heating amount set on an operation display section 10. The remaining time display section 9 displays the remaining heating time while reducing the remaining heating time as the heating amount is increased by being operated by the operation display section 10.

Description

  The present invention relates to a cooking device provided with a storage battery.

  Conventionally, as this type of induction heating cooker, for example, there is one described in Patent Document 1 (Japanese Patent Laid-Open No. 11-111442). In Patent Document 1, as shown in FIG. 6, a power storage unit 106 that stores charging energy, a charging circuit 131 that rectifies a commercial power source 120 and charges the power storage unit 106, a heating coil 103, and a high-frequency current in the heating coil 103. The inverter circuit 105 for supplying power, the power supply unit 124 for supplying power to the power storage unit 106 to the inverter circuit 105, and the power supplied to the load for controlling the power supply unit 124 and having a predetermined value The control unit 108 for controlling the inverter circuit 105 and the charging state display unit 109 for displaying the charging state, and the charging state display unit 109 indicates the amount of charging energy stored in the power storage unit 106. The induction heating cooker configured to display is described, and by calculating the remaining usable time from the amount of remaining charging energy It is also possible and is able to display the usage time of Ri.

JP-A-11-111442

  However, in the conventional configuration, the specific display content of the remaining amount of charging energy is not clarified, and only the display of the remaining amount of charging energy indicates to the user the remaining amount in the actual usage state. It was difficult to know specifically. Even if the remaining usable time is displayed, the usable time varies depending on the usage conditions, so it is difficult to understand how much firepower and how much time can be used, and as a result, a cooking device is used during cooking There was a problem that it might not be possible.

  The present invention solves the above-described conventional problems, and allows the user to know the remaining time that can be used according to the state of use, so that the remaining amount of charging energy disappears during cooking and the cooking device cannot be used. It is an object to provide a cooking device that is easy to prevent and easy to use for users.

  In order to solve the conventional problem, the cooking device of the present invention displays the remaining heating time determined according to the capacity value remaining in the storage battery and the heating amount set in the operation unit on the remaining time display unit. In addition, as the heating amount is increased by being operated by the operation display unit, the remaining heating time is reduced and displayed.

  With this configuration, the remaining heating time that can be used with the power supplied from the storage battery can be grasped at any time according to the thermal power being used by the user, and a user-friendly heating cooker can be realized. .

The cooking device of the present invention can optimally display the remaining heating time of the storage battery according to the heating amount with a simple configuration, and can be grasped by the user at any time, making it possible to examine a cooking plan that effectively utilizes the power supply from the storage battery. Therefore, it is possible to provide a cooking device that can be used in consideration of the environment and can be reduced in energy consumption depending on the ability of the user, and is easy to use for the user.

Whole block diagram of heating cooker in Embodiment 1 of the present invention Whole block diagram of cooking-by-heating machine in Embodiment 2 of the present invention Whole block diagram of heating cooker in Embodiment 3 of the present invention Whole block diagram of cooking-by-heating machine in Embodiment 4 of the present invention Whole structure figure of the heating cooker in Embodiment 5 of this invention Overall configuration diagram of a conventional induction heating cooker

  The first invention includes a top plate on which a cooking container is placed, a heating unit that is disposed below the top plate and that heats the cooking container, and a storage battery that is disposed below the top plate and supplies power to the heating unit. A capacity calculation unit that calculates a capacity value remaining in the storage battery, a control unit that controls operation start and stop of the heating unit, a remaining time display unit that displays a remaining heating time that can be heated by the storage battery, An operation display unit that operates and displays the heating amount of the heating means, and the remaining time display unit displays the remaining heating time determined according to the capacity value of the storage battery and the heating amount, and the operation display unit. As the amount of heating increases, the remaining heating time is reduced and displayed. As a result, in the case where the heating cooker body is operated only by the storage battery without being connected to the commercial power source, the user can grasp the remaining heating time that can be used with the power supplied from the storage battery. A cooking plan that effectively uses power supply can be studied, and a cooking device that is easy to use for the user can be realized with a simple configuration.

  In particular, according to a second invention, in the first invention, a first rectifier for rectifying an AC power input from a commercial power supply, and an output of the first rectifier are boosted to supply power to the heating means. A first power supply unit; a capacitor that smoothes the output of the first power supply unit; a second power supply unit that boosts the output of the storage battery and supplies power to the heating means; and the commercial power source A voltage determination unit that determines whether the voltage of the first power supply unit is equal to or higher than a predetermined voltage, and the control unit controls start and stop of the operation of the first power supply unit and the second power supply unit, and the voltage When the determination unit determines that the voltage of the commercial power source is less than a predetermined voltage, the heating unit is powered only by the second power supply unit, and the voltage determination unit sets the voltage of the commercial power source to a predetermined voltage or higher. If it is determined that If the output of the heating means is less than a predetermined power, power is supplied to the heating means only by the first power supply unit, and if the output of the heating means is equal to or higher than the predetermined power, the first power supply unit and the Power is supplied to the heating means by both of the second power supply units, and the calculation time display unit does not display the remaining heating time when only the first power supply unit is operating, When both the first power supply unit and the second power supply unit are operating, the remaining heating time determined according to the capacity value and the power supplied from the second power supply unit is displayed. It is a configuration. Thereby, when the heating cooker body is connected to a commercial power source, the user can grasp the remaining heating time that can be used with the power supplied from the storage battery. Therefore, even when high-power heating exceeding the rating of the commercial power supply is performed by supplying power from the storage battery, the user can grasp the remaining heating time during which high-power heating can continue, and the cooking plan that uses the storage battery more effectively Can be used in consideration of the environment where energy consumption can be reduced by the ability of the user, and a user-friendly cooking device can be realized.

In particular, the third invention is the first and second inventions, in order to charge the storage battery with the second rectifier for rectifying the AC power input from the commercial power supply and the output of the second rectifier. A charging circuit that converts current and voltage, and the control unit controls the start and stop of the operation of the charging circuit and starts the operation of the charging circuit when the operation of the heating unit is stopped. The remaining time display unit is configured to display that charging is in progress. As a result, when the heating cooker has a charging function, the fact that the storage battery is being charged can be displayed in place of the remaining heating time during display, and the user waits for the charging to be completed. A cooking plan based on the charging status of the storage battery, such as heating power, can be considered.

  In a fourth aspect of the invention, in particular, in the first to third aspects of the invention, a notification unit for notifying a user is provided, and the notification unit is configured to notify when the capacity value of the storage battery is equal to or less than a predetermined value. It is a thing. This triggers a reconsideration of the cooking plan when the remaining capacity of the storage battery falls below a predetermined amount so that the power supply from the storage battery is not obtained until cooking is complete and cooking fails. A cooking device that can be informed to the user and is easy to use for the user can be realized.

  According to a fifth aspect of the present invention, in particular, in the first to fourth aspects of the present invention, a notification unit for notifying a user is provided, and the notification unit is configured to notify when the remaining heating time becomes a predetermined value or less. It is. This informs the user of the opportunity to reconsider the cooking plan a predetermined time before the power supply from the storage battery ceases to prevent the power supply from the storage battery from failing until cooking is completed. It is possible to realize a cooking device that is easy for the user to use.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is an overall configuration diagram of a heating cooker according to Embodiment 1 of the present invention.

  In FIG. 1, a cooking container 1 is placed on a top plate 2, and the cooking container 1 is heated by an induction magnetic field from a heating coil 3. The temperature sensor 4 detects thermal infrared rays from the cooking container 1, is installed below the heating coil 3, and thermal infrared rays are incident through the visible portion of the top plate 2. The control unit 8 is configured by a microcomputer, and controls the inverter circuit 5 that supplies a high-frequency current to the heating coil 3 based on temperature information from the temperature sensor 4.

  The user can switch heating ON / OFF of the cooking device via the operation display unit 10 and can start and stop heating in order to heat the cooking container 1 installed in the corresponding burner. Moreover, the setting can be changed so that the heating power (heating amount) is increased or decreased when heating, and the temperature control of the fried food can be performed by selecting a menu.

  Further, when the power is turned on according to the user's operation, the power LED is turned on, and the current set thermal power corresponding to the set value of the thermal power is displayed by the number of lighting of the LED.

  The storage battery 6 uses a lithium ion battery for the battery cell, and the specification of the lithium ion battery is, for example, a rated voltage of 200 V and 1000 Wh. In this embodiment, the lithium ion battery is used. However, other storage batteries such as a nickel cadmium storage battery, a nickel hydride storage battery, and a lead storage battery can be used as long as the charge / discharge time, size, and price are balanced. Good.

  The capacity calculation unit 7 detects the supply current from the storage battery 6 to the inverter circuit 5 with a current sensor or the like, and subtracts the detected supply current from the rated capacity value of the storage battery obtained from the storage battery 6 to obtain the remaining capacity of the storage battery 6. calculate.

  Next, the operation of the control unit 8 will be described.

  First, when the user operates the operation display unit 10 and performs a heating start operation of the cooking device, the control unit 8 determines that heating is being performed. When the control unit 8 determines that heating is in progress, power is supplied from the storage battery 6. First, the state of charge of the storage battery 6 is confirmed, and when the storage battery 6 can be supplied, the inverter circuit 5 is driven and, for example, as shown in (Table 1), the power corresponding to the set thermal power set in the operation display unit 10 Is output.

  The remaining time display unit 9 displays the remaining heating time calculated by dividing the remaining capacity calculated by the capacity calculating unit 7 and the set thermal power set by the operation display unit 10. When it is determined that the storage battery 6 cannot be supplied because the remaining capacity is low, for example, a message indicating that the battery 6 is charged (for example, “No battery. Please charge”) is displayed. No heating is performed. In this case, it can be used again by removing the storage battery 6 and charging it. Moreover, it is also possible to prepare a spare storage battery 6 as an option and use it by exchanging it.

  In addition, when the user looks at the remaining heating time displayed on the remaining time display unit 9 after starting heating with an arbitrary heating power, if the time required for future cooking exceeds the remaining heating time, It is possible to study the cooking plan and take the best measures by not increasing the amount, or by covering the cooking container and reducing the heat dissipation while decreasing the heat radiation and increasing the remaining heating time. In addition, since it can be seen as a feeling that the remaining heating time displayed on the remaining time display unit 9 greatly changes depending on the heating power setting, it becomes easier for the user's feelings to cook efficiently with the minimum necessary heating power. As a result, it is considered that the effect of practicing energy conservation without knowing it can be obtained.

  Further, when the user has a margin for the remaining heating time in the heating power during cooking, when the heating power is increased by operating the operation display unit 10, the display of the remaining heating time is displayed instantaneously, so when the heating power is increased The remaining cooking time can be easily confirmed, and it is possible to execute the best cooking plan by determining whether or not to increase the heating power from the time required for future cooking.

  With the above configuration, when the cooking device body is operated only with a storage battery without being connected to a commercial power source, the user can set the remaining heating time according to the thermal power setting that can be used with the power supplied from the storage battery. A cooking plan that can be grasped at any time, makes it possible to study a cooking plan that effectively uses the power supply from the storage battery, can be used in an environment that can reduce energy consumption by the user's ability, and is easy to use for users Can be realized.

(Embodiment 2)
FIG. 2 is an overall configuration diagram of the cooking device according to Embodiment 2 of the present invention.

  Note that parts having the same function and the same configuration as those of the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only differences are described.

The difference from the first embodiment is that the first rectifier 21 that rectifies the AC power input from the commercial power supply 20 and the first rectifier 21 that boosts the output of the first rectifier 21 and supplies power to the inverter circuit 5. Power supply unit 22, capacitor 23 that smoothes the output of first power supply unit 22, second power supply unit 24 that boosts the output of storage battery 6 and supplies power to inverter circuit 5, and commercial power supply And a voltage determination unit 25 that determines whether or not power supply is possible because the voltage of 20 is equal to or higher than a predetermined voltage, and the control unit 8 starts and stops the operation of the first power supply unit 22 and the second power supply unit 24. When the voltage determination unit 25 determines that the voltage of the commercial power supply 20 is less than the predetermined voltage and power supply is not possible, only the second power supply unit 24 operates to supply power to the inverter circuit 5, and the voltage determination unit 25 is the voltage of the commercial power supply 20 When it is determined that the power supply is possible because the voltage is equal to or higher than the predetermined voltage, only the first power supply unit 22 operates to supply power to the inverter circuit 5 if the output of the heating means is less than the predetermined power set to the rated power of the commercial power supply 20. If the output of the heating means is equal to or higher than the predetermined power set to the rated power of the commercial power supply 20, both the first power supply unit 22 and the second power supply unit 24 are activated to supply power to the inverter circuit 5. The remaining time display unit 9 does not display the remaining heating time when only the first power supply unit 22 is operating, and both the first power supply unit 22 and the second power supply unit 24 operate. In this case, the remaining heating time determined according to the capacity value and the power supplied from the second power supply unit 24 is displayed.

  An AC power supply (AC100V in this embodiment) supplied from the commercial power supply 20 is converted to a DC power supply via the first rectifier 21. The DC power source that has been full-wave rectified by the first rectifier 21 is connected to the first power supply unit 22 and boosted to a predetermined voltage (DC 200 V in the present embodiment).

  Although the predetermined voltage in the present embodiment is DC 200 V, it is set in consideration of the power semiconductor that is a component of the inverter circuit 5 and the conversion efficiency, and is not limited to this.

  The output boosted by the first power supply unit 22 is supplied to the capacitor 23 and smoothed. In the present embodiment, the first power supply unit 22 includes a booster circuit in which the input voltage is set to 100 V AC, the maximum value of the input current is set to 14 A, the output voltage is set to 200 V, and the maximum value of the output current is set to 7 A; And a circuit having a PFC function.

  The second power supply unit 24 that boosts the output voltage from the power stored in the storage battery 6 is a chopper type booster circuit that monitors the output voltage and controls the ON time of the switching element, and boosts DC50V to DC200V.

  The voltage determination unit 25 monitors the voltage of the commercial power supply 20 and, for example, determines that power can be supplied if the effective value is 90 V or higher, and determines that power supply is not possible if the effective value is less than that.

  Next, the operation of the control unit 8 will be described.

  Control unit 8 determines that heating is in progress and voltage determination unit 25 can supply power, and the set thermal power set in operation display unit 10 is equal to or lower than a predetermined output (in this embodiment, the predetermined output is 1.4 kW). Judging. The predetermined output is set to a value obtained by subtracting the power consumption of other circuits from the power calculated from the supply capacity of the commercial power supply.

  When the set thermal power is less than or equal to the predetermined output, the control unit 8 drives only the first power supply unit 22 to drive the inverter circuit 5 and outputs the set thermal power. The remaining time display unit 9 does not display the remaining time because the power of the storage battery 6 is not used.

When the set thermal power exceeds a predetermined output, it is necessary to supply power from the storage battery 6 in addition to supplying power from the commercial power supply 20 in order to obtain an output exceeding the predetermined output. First, the capacity calculation unit 7
If the state of charge of the storage battery 6 is confirmed by the above and it is determined that supply is possible, both the first power supply unit 22 and the second power supply unit 24 are driven to supply power to the inverter circuit 5, and the set thermal power Is output. The remaining time display unit 9 calculates and displays the remaining heating time from the remaining capacity of the storage battery 6 calculated by the capacity calculation unit 7 and the power supplied from the second power supply unit 24 to the inverter circuit 5. Here, the power supplied from the second power supply unit 24 to the inverter circuit 5 can be calculated from the boosted voltage of the second power supply unit 24 and the output current measured separately. It is also possible to calculate the amount of power obtained by subtracting the power supplied from the commercial power source 20 from

  On the other hand, when it is determined that the storage battery 6 is not in a supplyable state because the remaining capacity is low, the inverter circuit 5 is driven by driving only the first power supply unit 22 and a predetermined output (1.4 kW) is output. To do. The remaining time display unit 9 does not display the remaining time because the power of the storage battery 6 is not used.

  If the voltage determination unit 25 determines that power supply is not possible, only the second power supply unit 24 is driven to drive the inverter circuit 5 and output the set thermal power. The remaining time display unit 9 displays the remaining heating time calculated by dividing the remaining capacity of the storage battery 6 calculated by the capacity calculation unit 7 and the set thermal power set by the operation display unit 10. However, if the set thermal power is set to exceed the predetermined output, the remaining heating time at the predetermined output that is actually output is calculated and displayed.

  In addition, when the user looks at the remaining heating time displayed on the remaining time display unit 9 after starting the heating with the heating power setting exceeding the predetermined power, when it seems that the time required for future cooking exceeds the remaining heating time By changing the heating power setting to a predetermined power or lower and cooking, it is possible to examine the optimum heating power and take the best measures.

  In the present embodiment, the storage battery 6 has a capacity of 1000 Wh, and the maximum value of the output power from the storage battery 6 is 1000 W. Therefore, the maximum set thermal power is set to 2.4 kW, and the set thermal power that can be set by the user on the operation display unit 10 is set to 2.4 kW. In addition, although the storage battery 6 in this Embodiment was 1000 Wh and the maximum output electric power was 1000 W, it is not restricted to this by the balance of the magnitude | size of a storage battery 6, and a price.

  With the above configuration, when the heating cooker body is connected to a commercial power source, the user can grasp the remaining heating time that can be used with the power supplied from the storage battery. Therefore, the remaining power of the storage battery can always be grasped while optimal control is performed while monitoring the power supply state of the commercial power supply, the charge state of the storage battery, and the thermal power setting state. Users can grasp the remaining heating time during which high-power heating can continue even when heating is performed, enabling cooking plans that make more effective use of storage batteries to be considered, and realizing a cooking device that is easy to use for users be able to.

(Embodiment 3)
FIG. 3 is an overall configuration diagram of a heating cooker according to Embodiment 3 of the present invention.

  It should be noted that parts having the same functions and configurations as those of the first or second embodiment are denoted by the same reference numerals, description thereof is omitted, and only differences are described.

  The difference from the first or second embodiment is that the second rectifier 30 that rectifies the AC power input from the commercial power supply 20 and the current and voltage for charging the storage battery 6 with the output of the second rectifier 30 are used. The control unit 8 controls the start and stop of the operation of the charging circuit 31 and starts the operation of the charging circuit 31 when the operation of the inverter circuit 5 is stopped. The display part 9 is a point which displays that it is charging.

  In addition, the display during charging becomes more easily understandable for the user if the remaining time until the charging is completed is calculated by the capacity calculation unit 7 and displayed.

  The user can know whether or not the storage battery 6 is being charged by looking at the display during charging displayed on the remaining time display unit 9 during charging. For example, when the user wants to perform high-power heating exceeding a predetermined power, the storage battery 6 Since sufficient remaining capacity needs to remain, cooking can be started after charging is completed.

  The charging circuit 31 is a constant voltage constant current circuit that steps down AC 100 V and converts it to a DC voltage of 50 V. The charging circuit 31 performs constant current charging while the charging voltage of the storage battery 6 is low, and constant voltage charging when the charging voltage increases. The CVCC method is used. In the present embodiment, the charging circuit 31 is a CVCC method, but a pulse charging method may be used as long as the life of the storage battery 6 and the environmental temperature are balanced.

  With the configuration as described above, when the heating cooker body has a charging function, the fact that the storage battery is being charged can be displayed in place of the remaining heating time that is not required during charging, and the user can complete charging. A cooking plan based on the state of charge of the storage battery can be considered, such as heating at high power after waiting.

(Embodiment 4)
FIG. 4 is an overall configuration diagram of a heating cooker according to Embodiment 4 of the present invention.

  In addition, the same number is attached | subjected about the same function as Embodiment 1-3, and the same structure, description is abbreviate | omitted, and only a different point is demonstrated.

  The difference from the first to third embodiments includes a notification unit 40 that notifies the user, and the notification unit 40 has a case where the remaining capacity of the storage battery 6 is equal to or less than a predetermined value (for example, 5% of the rated capacity). This is a point to be notified.

  In addition, the notification unit 40 can be notified by voice, a buzzer or the like according to the operation by the user, and when performing automatic cooking such as rice cooking or kettle, or when stopping heating after a set time by timer cooking, etc. The end of cooking can be notified.

  With the configuration as described above, the cooking plan is restarted when the remaining capacity of the storage battery is less than a predetermined amount so as to prevent the failure of cooking without the power supply from the storage battery being obtained until cooking is completed. The user can be informed of the opportunity to study, and a cooking device that is convenient for the user can be realized.

(Embodiment 5)
FIG. 5 is an overall configuration diagram of the heating cooker according to the fifth embodiment of the present invention.

  In addition, the same number is attached | subjected about the same function as Embodiment 1-3, and the same structure, description is abbreviate | omitted, and only a different point is demonstrated.

  The difference from the first to third embodiments includes a notification unit that notifies the user, and the notification unit 40 has a remaining heating time of the storage battery 6 that is equal to or less than a predetermined value (for example, three minutes before the remaining time). This is a point to be notified.

With the configuration as described above, the user has an opportunity to reconsider the cooking plan before a predetermined time when the power supply from the storage battery is cut off so that the power supply from the storage battery is not obtained until cooking is completed and cooking fails. Therefore, it is possible to realize a cooking device that is easy to use for the user.

  As described above, the cooking device according to the present invention can optimally display the remaining heating time of the storage battery according to the amount of heating, so that it is used in a general household kitchen having a storage battery or a commercial kitchen. The same can be applied to other cookers.

1 Cooking container 2 Top plate 3 Heating coil (heating means)
6 Storage Battery 7 Capacity Calculation Unit 8 Control Unit 9 Remaining Time Display Unit 10 Operation Display Unit 20 Commercial Power Supply 21 First Rectifier 22 First Power Supply Unit 23 Capacitor 24 Second Power Supply Unit 25 Voltage Determination Unit 30 Second Rectifier 31 Charging circuit 40 Notification unit

Claims (5)

A top plate on which a cooking container is placed; heating means disposed below the top plate for heating the cooking container; a storage battery disposed below the top plate for supplying power to the heating means; and remaining in the storage battery A capacity calculation unit that calculates a capacity value, a control unit that controls start and stop of the operation of the heating unit, a remaining time display unit that displays a remaining heating time that can be heated by the storage battery, and a heating amount of the heating unit An operation display unit that operates and displays, and the remaining time display unit displays the remaining heating time determined in accordance with the capacity value and the heating amount, and is operated by the operation display unit to control the heating amount. A cooking device that displays the remaining heating time as it increases. A first rectifier that rectifies an AC power input from a commercial power source; a first power supply that boosts an output of the first rectifier to supply power to the heating means; and the first power supply. A capacitor that smoothes the output of the storage unit, a second power supply unit that boosts the output of the storage battery and supplies power to the heating means, and a voltage determination unit that determines whether the voltage of the commercial power source is equal to or higher than a predetermined voltage The control unit controls the start and stop of the operation of the first power supply unit and the second power supply unit, and the voltage determination unit sets the voltage of the commercial power source to be less than a predetermined voltage. In the case where it is determined that only the second power supply unit operates and power is supplied to the heating unit, and when the voltage determination unit determines that the voltage of the commercial power source is equal to or higher than a predetermined voltage, Output is less than specified power If only the first power supply unit operates to supply power to the heating unit, and the output of the heating unit is equal to or higher than a predetermined power, both the first power supply unit and the second power supply unit Is operated and power is supplied to the heating means, and the remaining time display unit does not display the remaining heating time when only the first power supply unit is operating, and the first power supply unit The remaining heating time determined according to the capacity value and the power supplied from the second power supply unit is displayed when both the second power supply unit and the second power supply unit are operating. Cooking device. A second rectifier that rectifies the AC power input from the commercial power supply, and a charging circuit that converts current and voltage to charge the storage battery with the output of the second rectifier, and the control unit includes: The operation start and stop of the charging circuit are controlled, and when the operation of the heating unit is stopped, the operation of the charging circuit is started, and the remaining time display unit displays that charging is in progress. The cooking device according to 1 or 2. The cooking device according to claim 1, further comprising a notifying unit that notifies a user, wherein the notifying unit notifies when the capacity value of the storage battery is equal to or less than a predetermined value. The cooking device according to claim 1, further comprising a notifying unit that notifies a user, wherein the notifying unit notifies when the remaining heating time is equal to or less than a predetermined value.

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