JP2013161730A - Electromagnetic induction heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To notify a user of a throwing timing of foods in the case where deep-frying is performed continuously, in a deep-frying mode.SOLUTION: An electromagnetic induction heating cooker comprises: an induction heating coil; an inverter circuit applying a high-frequency current to the induction heating coil; a pot that is put on the induction heating coil via a plate; a temperature detection circuit detecting a temperature of a cooked object from a temperature of the pot; an operation part for selecting a cooking mode and setting a heating temperature; notification means notifying a user of a heating operation state of the induction heating coil; and a control circuit controlling the inverter circuit and the notification means on the basis of the cooking mode selected by the operation part and an oil temperature detected by the temperature detection circuit. When a deep-flying mode is selected at the operation part, the control circuit performs preheating to raise the oil temperature to the heating temperature corresponding to the selected deep-flying mode, and after completion of the preheating, the control circuit is shifted to a heat insulation mode. In the case where the oil temperature decreases lower than a threshold in the heat insulation mode, the control circuit notifies a user not to further throw foods by the notification means.

Description

  The present invention relates to an electromagnetic induction heating cooker having a fried food mode.

  Conventionally, in an electromagnetic induction heating cooker having a deep-fried food mode, until the temperature of oil in the pan reaches the temperature set by the user (for example, 180 ° C.) at the start of deep-fried food cooking, it is lit and displayed. There is one in which when the set temperature is reached, the light is extinguished to notify the completion of preheating (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 10-069711 (FIG. 1)

  When fried continuously in fried food mode, once the food is put into the oil, the oil temperature will drop. For this reason, it is necessary to input the food after the second time after the oil temperature is restored. However, in the conventional electromagnetic induction heating cooker, although it is informed that the preheating has been completed at the start of fried food cooking, it does not notify even if the oil temperature recovers after the food temperature has dropped once into the oil. There wasn't. For this reason, the input timing of the foodstuff after the 2nd time is difficult, and the foodstuff may be burnt.

  The present invention was made in order to solve the above-described problems, and has an object of enabling the user to be notified of the input timing of ingredients in the fried food mode when continuously fried food. To do.

  The electromagnetic induction heating cooker according to the present invention includes an induction heating coil, an inverter circuit for passing a high-frequency current through the induction heating coil, a pan placed on the induction heating coil via a plate, and the temperature of the pan. A temperature detection circuit for detecting the temperature of the food, an operation unit for selecting a cooking mode and setting a heating temperature, an informing means for informing the heating operation state of the induction heating coil, and cooking selected by the operation unit A control circuit for controlling the inverter circuit and the notification means based on the mode and the temperature of the food detected by the temperature detection circuit. Preheating is performed to increase the temperature to the heating temperature corresponding to the selected deep-fried food mode, and after preheating is completed, the mode is changed to the heat retention mode.If the oil temperature falls below the threshold in the heat retention mode, the temperature is increased. Is intended to notification by the notification means so as not to put the food.

  In the electromagnetic induction heating cooker according to the present invention, in the fried food mode, after the preheating is completed, the user can be informed of the timing of adding ingredients when continuously fried. For this reason, the food is not burned, efficient cooking is possible, and usability is improved.

It is a perspective view of the electromagnetic induction heating cooking appliance which concerns on embodiment of this invention. It is a functional block diagram of the electromagnetic induction heating cooking appliance which concerns on embodiment of this invention. It is a figure which shows the temperature transition and display example of the electromagnetic induction heating cooking appliance which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of the electromagnetic induction heating cooking appliance which concerns on embodiment of this invention.

FIG. 1 is a perspective view of an electromagnetic induction heating cooker according to an embodiment of the present invention.
In FIG. 1, reference numeral 1 denotes an electromagnetic induction heating cooker having a fried food mode. The top surface of the main body 2 is provided with a top plate 3 made of heat-resistant glass made of nonmagnetic material. The top plate 3 is held by a frame body 4 provided on the outer periphery. An induction heating coil 5 is disposed below the top plate 3. The induction heating coil 5 is disposed on the left and right sides of the front side of the electromagnetic induction heating cooker 1, and includes a left heater heating unit 5a and a right heater heating unit 5b, a left heater heating unit 5a, and a right A central heater heating part 5c is provided which is arranged in the middle of the heater heating part 5b and is constituted by a small diameter induction heating coil. The left heater heating unit 5a and the right heater heating unit 5b electromagnetically heat the pan placed on the top plate 3 with a high-frequency current flowing through the large-diameter induction heating coil. Furthermore, the central heater heating part 5c induction-heats the pan placed on the top plate 3 by a high-frequency current flowing through the small-diameter induction heating coil. 6 is a double-sided roaster equipped with a cooking cabinet.

  Reference numeral 8 denotes an upper surface operation unit provided on the near side of the frame 4 around the top plate 3. The upper surface operation unit 8 is provided with operation buttons for turning on / off the roaster 6 and the heater heating units 5a to 5c and adjusting the heating power. A front operation unit 11 is provided on the right side of the roaster 6 on the front side of the main body 2 and includes encoders 11a to 11c for the user to set the temperature of the heater heating units 5a to 5c.

  Further, on the right side of the roaster 6 on the front side of the main body 2, a power lamp 7 that displays the on / off state of the main power source and a front liquid crystal display that displays that each of the heater heating portions 5a to 5c is in a heating operation state. Unit (LCD display unit) 12 and a speaker 19 for outputting a notification sound (sound or the like).

Further, on the top plate 3, thermal power display portions 10a to 10c are provided. The thermal power display unit 10a displays the energized state and thermal power of the left heater heating unit 5a. The thermal power display unit 10b displays the energized state and thermal power of the right heater heating unit 5b. The thermal power display unit 10c displays the energized state and thermal power of the central heater heating unit 5c.
On the top plate 3, upper liquid crystal display units (LCD display units) 9a to 9c are provided. The upper liquid crystal display unit 9a displays the cooking mode of the left heater heating unit 5a and the like. The top liquid crystal display unit 9b displays the cooking mode of the right heater heating unit 5b and the like. The upper surface liquid crystal display unit 9c displays the cooking mode of the central heater heating unit 5c and the like.
Further, on the top plate 3, LEDs (hereinafter referred to as pink light LEDs) 21 a that emit pink light indicating the heating state of the cooked product (oil) in the deep-fried food mode, respectively, in the vicinity of the top liquid crystal display units 9 a to 9 c. To 21c, LEDs that emit red light (hereinafter referred to as red light LEDs) 22a to 22c, and LEDs that emit blue light (hereinafter referred to as blue light LEDs) 23a to 23c are also provided.

FIG. 2 is a functional block diagram of the electromagnetic induction heating cooker according to the embodiment of the present invention.
Reference numeral 17 denotes a control circuit that controls the entire electromagnetic induction heating cooker. The control circuit 17 drives the upper and lower heaters 60 of the roaster 6 based on the power switch and operation input of the upper surface operation unit 8 and the front surface operation unit 11 (hereinafter collectively referred to as the operation unit 80), and the temperature sensor 15a, The inverter circuit 40 of each heater heating part 5a-5c is driven based on the input signal from the temperature detection circuit 16 which has 15b. Further, the control circuit 17 includes the upper liquid crystal display units 9a to 9c, the front liquid crystal display unit 12 and the thermal power display units 10a to 10c, the pink light LEDs 21a to 21c, the red light LEDs 22a to 22c, and the blue light LEDs 23a to 23c (hereinafter referred to as these). Are collectively referred to as a display unit 90) to display the heating operation state. Moreover, the control circuit 17 controls the speaker 19 which is a notification sound generation means, and notifies a heating operation state also with an audio | voice. In addition, the control circuit 17 includes a timer 18. The temperature sensors 15a and 15b detect the temperature of the pan 13, and the temperature detection circuit 16 determines the temperature of the food in the pan 13 from the detection results of the temperature sensors 15a and 15b.

  Next, the operation in the fried food mode using, for example, the right heater heating unit 5b of the electromagnetic induction heating cooker according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2 using FIGS. To do.

FIG. 3 is a view showing a temperature transition and a display example of the electromagnetic induction heating cooker according to the embodiment of the present invention. FIG. 4 is a flowchart showing the operation of the electromagnetic induction heating cooker according to the embodiment of the present invention.
Hereinafter, a description will be given based on each step of FIG. Here, it is assumed that a frying pan 13 containing oil 14 is placed on the right heater heating portion 5b of the top plate 3 as shown in FIG. Here, the oil 14 corresponds to a cooked food.
First, body preparation (initial setting) is performed in step S1. That is, the electromagnetic induction heating cooker 1 supplies power when the power switch is operated, and turns on the power lamp 7. When the encoder 11b of the right heater heating unit 5b is pushed out and protrudes from the front surface of the front operation unit 11, the thermal power display unit 10b is turned on. When the encoder 11b is turned from this state, a set temperature (for example, 180 ° C.) corresponding to the turned angle is displayed on the thermal power display unit 10b.

  When a deep-fried food key (not shown) is pressed in this state, the control circuit 17 starts preheating control and starts heating toward a set temperature (180 ° C.). That is, the control circuit 17 causes the induction heating coil of the right heater heating unit 5b to pass a high frequency current via the inverter circuit 40, and starts induction heating of the pan 13 placed on the top plate 3 by the high frequency current. Then, preheating of the oil 14 is started (step S2).

  Next, the control circuit 17 outputs a sound “Preheating is started” from the speaker 19 and starts the slow blinking of the pink light LED 21c (for example, repeatedly turning on and off at intervals of 1 second), and further the upper surface liquid crystal display unit The characters “Pre-heating” are displayed on 9c (Step S3).

  Next, the control circuit 17 determines the temperature of the pan 13, that is, the oil temperature (step S4), and starts the heat retention control when the oil temperature reaches the set temperature (180 ° C.). In addition, the speaker 19 outputs a sound “Preheating complete”, lights up the red light LED 22c, and further displays the letters “I can fry” on the upper liquid crystal display portion 9c to prompt the input of ingredients (step S5). ). Note that the heat retention control is performed by, for example, reducing the output of the current flowing through the inverter circuit 40 to the induction heating coil of the right heater heating unit 5b, or at a predetermined time (for example, every 3 minutes) for a predetermined time (for example, 30 seconds). The high-frequency current is passed through the inverter circuit 40 to the induction heating coil of the right heater heating section 5b.

  Next, the control circuit 17 performs the oil temperature determination (step S6), the food temperature is 180 ° C to 10 ° C or less by checking whether the food has been input and the oil temperature has decreased to 180 ° C to 10 ° C. If it is, return control is started. In addition, the speaker 19 outputs a voice message “Please wait for food”, and the blue light LED 23c starts to blink rapidly (for example, repeatedly turns on and off at intervals of 0.5 seconds). Is displayed with the characters “Please wait for the food input” to suppress the food input (step S7). In the return control, only the time until the oil temperature is set to the set temperature (180 ° C.) is short, and is basically the same as the preheat control.

  Next, the control circuit 17 determines the oil temperature (step S8), and starts the re-warming control when the oil temperature reaches the set temperature (180 ° C.). In addition, the speaker 19 outputs a sound “Returned”, lights up the red light LED 22c, and further displays the letters “I can fried” on the upper liquid crystal display portion 9c, prompting the input of ingredients (step S9). . The re-warming control is the same as the warming control.

  Thereafter, it is determined whether or not the process is finished (step S10). For example, when the encoder 11b of the right heater heating unit 5b is pushed back, it is determined that the process is finished, and the series of processes is finished. If it is determined in step S10 that the process has not ended, the process returns to step S6.

  As described above, according to the electromagnetic induction heating cooker according to the embodiment of the present invention, it is possible to notify the user of the input timing of ingredients when fried food is continuously used in the fried food mode. For this reason, the food is not burned, efficient cooking is possible, and usability is improved.

  Here, the fried food mode using the right heater heating unit 5b has been described as an example, but it goes without saying that the same applies to the fried food mode using the left heater heating unit 5a and the central heater heating unit 5c. Yes.

  Also, here, in the deep-fried food mode, the heating state has been described as an example using the liquid crystal (LCD) display, the LED display, and the speaker (voice), but the notification function to be used is described. (LCD display, LED display, voice, etc.) may be arbitrarily selected by the user.

  1 Electromagnetic induction cooking device, 2 body, 3 top plate (plate), 4 frame, 5 induction heating coil, 5a left heater heating unit, 5b right heater heating unit, 5c central heater heating unit, 6 roaster, 7 power lamp , 8 Upper surface operation unit, 9a to 9c Upper surface liquid crystal display unit, 10a to 10c Thermal power display unit, 11 Front operation unit, 11a to 11c Encoder, 12 Front liquid crystal display unit, 13 Pan, 14 Oil (cooked food), 15a, 15b Temperature sensor, 16 Temperature detection circuit, 17 Control circuit, 18 Timer, 19 Speaker (notification sound generating means), 21a to 21c Pink light LED, 22a to 22c Red light LED, 23a to 23c Blue light LED, 40 Inverter circuit, 60 Upper and lower heaters, 80 operation units, 90 display units (notification means).

Claims (5)

An induction heating coil;
An inverter circuit for passing a high-frequency current through the induction heating coil;
A temperature detection circuit for detecting the temperature of the food from the temperature of the pan placed on the induction heating coil via a plate;
An operation unit for selecting the cooking mode and setting the heating temperature;
Informing means for informing the heating operation state of the induction heating coil;
A control circuit for controlling the inverter circuit and the notification means based on the cooking mode selected by the operation unit and the food temperature detected by the temperature detection circuit;
When the deep-fried food mode is selected in the operation unit, the control circuit performs preheating to raise the oil temperature to a heating temperature corresponding to the selected deep-fried food mode, and after the preheating is completed, the control circuit shifts to the warming mode, In the mode, when the oil temperature falls below a threshold value, an electromagnetic induction heating cooker characterized by causing the notification means to notify that no further food is added.   The electromagnetic induction heating cooker according to claim 1, wherein the threshold is set to a temperature that is 10 ° C lower than a heating temperature set in the operation unit.   The control circuit urges the notification means to prevent food from being added, and then causes the inverter circuit to perform a return control for raising the oil temperature, and also notifies the notification means that the recovery is in progress. The electromagnetic induction heating cooker according to claim 1 or 2, characterized in that.   4. The electromagnetic induction heating cooker according to claim 3, wherein when the oil temperature reaches an appropriate temperature at which a deep-fried food can be obtained again by the return control, the control circuit notifies the notification means to that effect.   The said notification means is comprised by the display part provided with the LCD display part and the LED display part, and the notification sound generation means, The user can set arbitrarily, The Claims 1 thru | or Claims characterized by the above-mentioned. The electromagnetic induction heating cooking appliance in any one of 4.

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