JP2004226040A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating cooker with the fish grilling function and the oven function capable of performing energy-saving, tasteful, easy-to-use and free-from-failure cooking irrespective of the cooking kind or the cooking capacity. <P>SOLUTION: The heating cooker starts the cooking selected from a plurality of automatic cooking menus, starts the simultaneous conduction of an upper heater 1 and a lower heater 2, and has a control means 23 having the function of detecting the temperature gradient in a predetermined time by a temperature detection means 24 such as a thermistor. The heating cooker sets the cooking time and temperature in the control means 23, performs preliminary warning when the cooking is completed, performs the warning of completion after performing continuous conduction only to an exhaust fan 6 for a predetermined time, and completes the cooking. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
The present invention relates to a cooking device having a grilling function and an oven function.
[0002]
2. Description of the Related Art A conventional heating cooker will be described below with reference to FIGS. FIG. 8 is a configuration diagram of a conventional cooking device. 8, 15 is an outer box, 16 is an inner box, 1 is an upper heater for heating the food 10 in the inner box from the upper side, 2 is a lower heater for heating the food 10 in the inner box 16 from the lower side, and 12 is The saucer is provided below the lower heater 2 to receive fat or the like dripped from the cooking product 10. Reference numeral 9 denotes a net shelf which is installed on the tray 12 so that the food 10 in the inner box 16 can be installed between the upper heater 1 and the lower heater 2. Reference numeral 13 denotes a handle, 14 denotes a door glass, and 37 denotes a packing together with the saucer 12. A person using the device can grasp the handle 13 and move it back and forth to open and close the door, and put the food 10 in and out of the inner box 16. At the same time, the user looks into the door glass 14 and confirms whether the food 10 is completed. The packing 37 closes the gap between the door glass 14 and the product housing to increase the confidentiality in the inner box 16, and smoke generated from the cooked food 10 during heating and cooking and hot air in the inner box 16 are removed from the gap. Prevent leaks. A timer 35 is rotatable clockwise, and is configured to set a time corresponding to the rotation angle. A thermostat 36 is installed on the side of the inner box 16 and operates at a predetermined temperature. Reference numeral 36 denotes a catalyst B, and reference numeral 35 denotes a catalyst heater, which passes and removes smoke and odor generated in the inner box 16. Reference numeral 6 denotes an exhaust fan, and 7 denotes a fan drive fan motor. The fan motor generates a flow of air so as to allow smoke and smell generated in the inner box 16 to pass through the catalyst and discharges the air from an exhaust port 8.
FIG. 9 is a circuit diagram of a conventional cooking device. As shown in FIG. 8, when the food 10 is placed on the net shelf 9 and the door is closed, and the timer 38 is rotated clockwise to set the cooking time, the timer switch is closed for the time set by the timer 38, and the upper heater is closed. 1, the lower heater 2, the catalyst heater 35, and the exhaust fan 6 for smoke removal are energized to start cooking. Then, the inner box 16 is heated by the upper heater 1 and the lower heater 2 and rises in temperature. When the temperature inside the inner box 16 becomes higher than a preset temperature, the thermostat 21 is activated to activate the upper heater 1. The lower heater 2 is de-energized. By this operation, the internal temperature in the inner box 16 is maintained at a predetermined temperature.
[0004]
However, in the above-mentioned conventional structure, the setting of the type, capacity, and temperature of the food 10 and the setting of the energization time by the timer 38 often depend on the intuition of the cooker, so that the food is passed through the door glass 14. Not only did the cooking take a lot of time to check the hardness of the baked food, and the hardness was taken out temporarily, but sometimes it failed.
Further, in the above-described conventional configuration, when the timer 38 is rotated clockwise to set the cooking time, the upper heater 1, the lower heater 2, the catalyst heater 35 and the exhaust fan 6 for smoke removal are all energized and the cooking time is reduced. To start. Therefore, even if the upper heater 1, the lower heater 2, and the catalyst heater 35 heat the inside of the inner box 16, the air in the heated inner box 16 is exhausted, and it takes time to raise the temperature.
When the time set by the timer 38 elapses and ends, the energization of the upper heater 1, the lower heater, the catalyst heater 35, and the exhaust fan 6 for smoke removal is completed, and all of them stop simultaneously. Thereafter, since the food 10 inside the inner box 16 is heated by the residual heat and continues to generate smoke and smell, when the door glass 14 is opened at the same time as the completion of cooking, all the remaining smoke and smell flows out, and the air in the room is released. May get dirty.
[0007] Further, the mechanical timer 38 notifies the user of "Chin" and one hit point at the end of the set time, so that the end may not be confirmed when the cook temporarily leaves the place. It is most delicious to take out and eat the food 10 at the same time as the completion, so if it is left carelessly for a long time, it will be overcooked due to the effect of the residual heat, resulting in poor cooking without crunch.
In the above-described conventional configuration, a catalyst heater 35 is provided in addition to the upper heater 1 and the lower heater 2, which increases parts and assembly costs.
When an abnormal temperature occurs due to ignition in the inner box 16, the thermostat is activated and heating is continued by the upper heater 1 and the lower heater 2 until the time set by the timer elapses. The object 10 is damaged.
In a configuration in which the exhaust fan 6 for removing smoke is driven to remove smoke and smell generated in the inner pot 16, the inside of the inner box 16 is ignited, the thermostat 21 is activated, and the upper heater is activated. Even if the power supply to the lower heater 1 and the lower heater 2 is cut off, the exhaust fan 6 is driven, and air flow is generated in the inner pan 16 so that it is difficult to extinguish the fire.
[0011]
In order to solve the above-mentioned problems, a heating cooker according to the present invention comprises upper and lower heater control means 26 for heating a food 10 in a cooking cabinet, and detecting a temperature in the cooking cabinet. When the upper heater 1 and the lower heater 2 start simultaneous energization, the temperature detecting unit 24 detects a temperature gradient within a certain time, and the temperature after the cooking is completed. A control having a function of setting an exhaust fan start time, a cooking time, and a cooking temperature, performing a preliminary notification at the end of cooking, and continuing to energize only the exhaust fan 6 for a certain period of time, and informing a second end by the notification means 28 and ending. And means 23.
[0012]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises an inner box 16 for heating and cooking, a net shelf 9 on which a food 10 is placed, an upper heater 1 located above the net shelf 9 and a lower part. It comprises a lower heater 2 located therein, upper and lower heater control means 26 for controlling these, a temperature detection means 24 in the inner box 16, and a control means 23 having functions such as a cooking menu setting means 10 for setting a cooking menu, By starting cooking in the automatic cooking menu, the upper heater 1 and the lower heater 2 start energizing. After the energization is started, the temperature in the inner box 16 is detected by the temperature detecting means 24 to detect the temperature gradient, the amount of the food is specified, and a preset cooking temperature and cooking time are selected to control the energization. A suction port 3 and a catalyst 4 are installed substantially above the upper heater 1 in the inner box 16, constitute an exhaust duct 5, and exhaust air is exhausted from an exhaust port 8 by an exhaust fan 6. The catalyst 4 is configured to remove smoke by a catalytic action by increasing the heating temperature of the upper heater 1, so that the most delicious cooking is completed regardless of the type of cooking and the capacity of cooking, and can be used comfortably.
The invention described in claim 2 is that the heating cooker starts automatic cooking, always simultaneously heats the upper heater 1 and the lower heater 2, and forms the suction port 3 and the catalyst 4 at the upper part of the inner box 5. By keeping the temperature of the upper heater 1 at a high temperature in the vicinity, the catalyst performance is enhanced and the smoke removing effect is ensured, and a heater dedicated to the catalyst is not required.
According to a third aspect of the present invention, the cooking device starts automatic cooking, the upper heater 1 and the lower heater 2 start energizing, and the temperature in the inner box 16 reaches a preset temperature. Then, the temperature is detected by the temperature detecting means 24, the exhaust fan 6 is energized, and heating and cooking and smoke removal and exhaust by the catalyst 4 are started while both heaters are energized. It has the effect of not discharging.
According to a fourth aspect of the present invention, the cooking completion notifying means 28 notifies a predetermined time immediately before the automatic cooking of the heating cooker is completed, and the power supply to the upper heater 1 and the lower heater 2 is terminated. At the same time, cooking and notification are completed. However, since the exhaust fan 6 keeps energizing and removes smoke in the inner box 16 for a certain period of time, a more reliable smoke removing effect is obtained compared to a method in which the exhaust fan 6 is stopped at the same time when the upper and lower heaters are stopped. Can be
According to a fifth aspect of the present invention, the power supply to the upper heater 1 and the lower heater 2 is terminated after the automatic cooking of the heating cooker is completed, but the power supply to the exhaust fan 6 is stopped for a predetermined time. The second notification of the end of the smoke removal for a certain period of time immediately before the end of the smoke is to notify the cooker of the completion of the cooking without fail to prevent the cooking from failing.
According to a sixth aspect of the present invention, when the abnormal temperature in the inner box 16 is detected by the temperature detecting means 24 during the heating by the heating cooker, the mode shifts to the abnormal high temperature mode in the refrigerator, and the upper heater 1 and the lower heater 2 are moved. Is stopped, and only the exhaust fan 6 continues to operate, so that it is possible to prevent the stoppage of the ignition of the fat coming out of the food 10 and the failure of the cooking.
According to a seventh aspect of the present invention, when it is detected that the thermistor 39 has a disconnection or short-circuit abnormality while heating the cooking device, the upper heater 1, the lower heater 2, and the exhaust fan 6 are energized. It is controlled to stop, and has the effect of notifying an abnormality of the cooking device and preventing ignition of the cooked product 10 or the like.
[0019]
FIG. 1 is a front view of a heating cooker according to one embodiment of the present invention. Components having the same configuration as the conventional example are denoted by the same reference numerals, and description thereof is omitted. A net shelf 9 is provided between the upper heater 1 and the lower heater 2 inside a housing composed of an outer box 15 and an inner box 16, and a food 10 is provided thereon. A saucer 12 is provided below the food 10 and receives the fat that has come out of the food 10 when cooking is heated. Since the operation panel 11 is provided on the right front side and has the display means 29 and the input means 25, when the cook places the desired food item 10 on the net shelf 9 and operates it with the input means 25, it is displayed on the display means 29, and at the same time, The upper heater 1 and the lower heater 2 are energized to start cooking heating.
FIG. 2 is a cross-sectional view of the heating cooker according to one embodiment of the present invention. A handle 13, a packing 37, and a door glass 14 having a tray 12 are provided on the front surface thereof. Has an exhaust duct 5 including an inlet 3 and has an upper portion provided with a catalyst A4 for oxidizing and purifying oily smoke heated to a high temperature by the upper heater 1 and the lower heater 2 during cooking, and the motor 7 drives the exhaust fan 6 to rotate. Air is exhausted from the exhaust port 8.
FIG. 3 is a circuit diagram of a heating cooker according to one embodiment of the present invention, and FIG. 4 is a block diagram of the same. The functions of the input means 25, the display means 29, the upper and lower heater control means 26, the temperature detection means 24, the smoke removing fan control means 27, the notification means 28 and the control means 23 are achieved by a microcomputer (see the flowchart in FIG. 7). In this embodiment, a triac 22 is used as a drive element for the fan motor 7 for smoke removal, and a relay 19 is used as an element for controlling the energization of the upper heater 1 and the lower heater 2.
FIG. 6 shows an operation display layout of the cooking device in one embodiment of the present invention. As shown in FIG. 6, the operation panel 11 includes an input unit 25 and a display unit 29. The start / stop switch 30 for turning on / off the power, the automatic cooking switch 31, the time adjustment switch 32, and the burning color adjustment switch. 33, and has a function of displaying the operation status with the LED of the display means 29.
The operation of the heating cooker configured as described above will be described with reference to FIG. FIG. 5 is a diagram for explaining a cooking sequence using the absolute value of the temperature. When the control means 23 starts cooking based on the signal input from the input means 25, the control means 23 controls the upper and lower heater control means 26, the temperature detecting means 24, and the smoke removing fan control means 27 to supply electricity to the upper heater 1 and the lower heater 2 to thereby control the inside. The inside of the box 16 is heated.
Then, as shown in FIG. 5, as the temperature inside the inner box 16 rises, the temperature detected by the temperature sensor 17 rises and reaches the temperature T1, and at the same time, the exhaust fan 6 starts rotating. When the temperature reaches the temperature T2, the time from the temperature T1 to the temperature T2 is measured, the cooking time and the smoke removing time are determined by determining the capacity of the food 10, and the first cooking temperature zone T3 and the second cooking temperature zone T4 are determined. The power supply time to the upper and lower heaters is determined so as to control the first cooking temperature zone and the second cooking temperature zone in a stepwise manner. In addition, when the temperature reaches T1, the start and end times of the rotation of the exhaust fan 6, and the times at which the cooking end buzzer and the smoke removal end buzzer sound are determined. The length of the smoke removal time is determined based on the type and capacity of the food 10. Therefore, even if the cooking capacity is large or small, as long as the automatic cooking switch 32 is selected, the control means 23 determines the cooking temperature, the cooking time, and the smoke removal time, so that cooking without failure can be performed.
If the user sets the grilling color adjustment switch 33 and the time adjustment switch 32 without pressing the automatic cooking switch 31, and presses the start / stop switch 30, the user can adjust the grilling color through the door glass 14 while watching the cooking process. It is also possible to cook.
FIG. 7 is a flowchart showing a cooking process of the heating cooker according to one embodiment of the present invention. When the start / stop switch 30 is pressed and the upper and lower heaters are energized and the temperature T1 is recognized, the fan motor 7 for smoke removal is energized and the exhaust fan 6 is rotated. When the temperature T2 has elapsed, the capacity of the food 10 is detected by matching the experimental value set in advance from the slope with respect to the time axis from the temperature T1, and the cooking temperature T3 and the length of the cooking time corresponding to this capacity are detected. Set. When the cooking time has elapsed, the buzzer notification and the energization of the upper and lower heaters are stopped, and only the exhaust fan 6 is continuously energized. When the set smoke removal time has elapsed, the buzzer sounds again with a different sound, the exhaust fan 6 also stops, and the cooking is completed. Even if the door glass 14 is opened and the food 10 is taken out at the same time as the cooking is finished, no smoke is emitted due to the effect of the catalyst 4 and the function of the exhaust fan 6.
[0027]
As described above, according to the first aspect of the present invention, when the automatic cooking is started, the temperature detecting means works, and the capacity of the cooked food is checked by using the temperature rise gradient against the data stored in advance. And a control means for setting a cooking temperature and a cooking time appropriate to the capacity is provided, so that the cook has no cooking failure and is easy to use.
According to the second aspect of the present invention, an intake duct is provided above the upper heater of the cooking device to form an exhaust duct connected to the exhaust port, and a catalyst is disposed above the intermediate duct so that the upper heater and the lower heater are arranged. The heater is always heated at the same time, the high temperature near the upper portion is effectively used, and the smoke removing effect can be improved without providing a heater dedicated to the catalyst as in the conventional example.
According to the third aspect of the present invention, when the automatic cooking of the heating cooker is started and the upper heater and the lower heater are energized and the temperature in the refrigerator reaches a preset temperature, the temperature is reduced to a predetermined temperature. Since it is detected by the detecting means and the exhaust fan is energized to start the smoke removal and the exhaust by the catalytic action, the first heating energy is not wasted and the energy is saved.
According to the fourth aspect of the present invention, the completion of cooking is notified for a fixed time immediately before the automatic cooking of the heating cooker is completed, and the power supply to the upper and lower heaters is completed, but the exhaust fan is set in advance. It has the effect of energizing continuously for a time and removing smoke.
According to the fifth aspect of the present invention, even when the power supply to the upper and lower heaters of the cooking device is completed, the exhaust fan is continuously supplied with electricity for a preset time to perform a smoke removing operation.
This has the effect of notifying the end of smoke removal with a sound different from that at the end of cooking immediately before the end.
According to the present invention, when an abnormal temperature occurs in the inner box during heating of the heating cooker, when the temperature is detected by the temperature detecting means, the mode shifts to the abnormally high temperature mode in the refrigerator and the upper and lower portions are moved. This has the effect of stopping the energization of the heater and continuing to operate only the exhaust fan.
Further, according to the invention, when the thermistor detects an abnormality of disconnection or short-circuit during heating of the cooking device, the power supply to the upper and lower heaters and the exhaust fan is stopped. Having.
[Brief description of the drawings]
FIG. 1 is a front view of a heating cooker according to one embodiment of the present invention.
FIG. 2 is a cross-sectional view of the cooking device in one embodiment of the present invention.
FIG. 3 is a circuit diagram of a cooking device according to one embodiment of the present invention.
FIG. 4 is a block diagram of a heating cooker according to one embodiment of the present invention.
5 is a circuit diagram of the cooking device in one embodiment of the present invention; FIG. 6 is a diagram showing an operation display layout of the cooking device in one embodiment of the present invention;
FIG. 7 is a flowchart showing a control function of a control means of the cooking device in one embodiment of the present invention.
FIG. 8 is a configuration diagram of a heating cooker in a conventional configuration.
FIG. 9 is a circuit configuration diagram of a cooking device having a conventional configuration.
[Explanation of symbols]
1 upper heater 2 lower heater 3 suction port 4 catalyst A
5 Exhaust duct 6 Exhaust fan 7 Fan motor 8 Exhaust port 9 Net shelf 10 Cooking object 11 Operation panel 12 Receiving tray 13 Handle 14 Door glass 15 Outer box 16 Inner box 17 Temperature sensor 18 Commercial power supply 19 Relay 20 Fuse 21 Thermostat 22 Triac 23 Control means 24 Temperature detection means 25 Input means 26 Upper and lower heater control means 27 Smoke removal fan control means 28 Notification means 29 Display means 30 Start / stop switch 31 Automatic adjustment switch 32 Time adjustment switch 33 Burning color adjustment switch 34 Leg 35 Catalyst heater 36 Catalyst B
37 Packing 38 Timer 39 Thermistor

Claims (7)

Put the food in the inner box to cook, including upper and lower heater control means, temperature detection means in the inner box, and control means having an input means and a display means to set a cooking menu,
The control means starts cooking based on the automatic cooking menu, the temperature detection means detects the temperature in the inner box after the start of energization, specifies the amount of food from the temperature rise gradient, and sets the amount in advance at the same time. A cooking device characterized by a configuration in which a cooking time and a cooking temperature suitable for a certain capacity are selected and energization control is performed, so that cooking is not troublesome and there is no failure. The control means, when the heating cooker starts automatic cooking, always heats the upper heater and the lower heater at the same time, and controls so as to keep the temperature in the vicinity of the inlet and the catalyst formed in the upper portion of the inner box high. The heating cooker according to claim 1, wherein the heating cooker enhances catalytic performance and ensures a smoke removing effect. The control means is configured such that when the heating cooker starts automatic cooking, the upper heater and the lower heater start energizing, and when the temperature in the inner box reaches a preset temperature, the temperature is detected by the temperature detection means and the exhaust fan is detected. The heating cooker according to claim 1, characterized in that heating cooking and smoke removal and exhaust by a catalyst are started while the upper and lower heaters are energized and the upper and lower heaters are energized. The control means notifies the cooking completion notifying means for a certain period of time immediately before the end of the automatic cooking of the heating cooker, and at the same time the power supply to the upper heater and the lower heater is completed, the cooking completion and the notification completion paper, the exhaust fan 2. The cooking device according to claim 1, wherein the energization is continued and smoke in the box is removed for a predetermined time. When the automatic cooking of the heating cooker is completed, the control means terminates the energization of the upper heater and the lower heater, but after the exhaust fan has been energized for a certain period of time, immediately after the end of the smoke removal for a certain period of time. The cooking device according to claim 1, wherein the end is notified. When the control unit detects an abnormal temperature in the inner box by the temperature detection unit during heating by the heating cooker, the control unit shifts to an in-chamber abnormal high temperature mode, stops energizing the upper heater and the lower heater, and operates only the exhaust fan. 2. The cooking device according to claim 1, wherein the cooking is continued. 2. The heating device according to claim 1, wherein the control unit stops energizing the upper heater, the lower heater, and the exhaust fan when detecting that the thermistor causes an abnormality while heating the cooking device. Cooking device.

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