JP2019046552A - Induction heating cooker - Google Patents

Abstract

To provide various cooking methods by individually control a plurality of heating coils with grill pans put thereon.SOLUTION: An induction heating cooker comprises: inverter means 72 for supplying an electric power to a plurality of heating coils 13; and control means 74 for controlling the inverter means based on a temperature sensed by an infrared sensor and a temperature-sensing element. The control means is capable of heating and controlling more than one of the plurality of heating coils at a time. When an increase of the temperature sensed by the infrared sensor and the temperature-sensing element shows a value equal to or larger than a particular value, the control means stops or lowers an electric power supplied to the heating coils. The heating coils includes a right heating coil 13a, a left heating coil 13b, and a rear heating coil 13c. The rear heating coil is disposed behind the right heating coil or the left heating coil. With the induction heating cooker, grill pans can be placed and heated on the plurality of heating coils.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an induction heating cooker.

  Conventionally, as described in Patent Document 1, in an induction heating cooker, a top plate on which the cooking pot on the upper surface of the main body is placed, a grill storage disposed below the top plate, and the grill storage A door for taking out the food in and out of the cabinet, a grille for placing the food, and the grille placed on the door, and the tray and the grille for placing the grille thereon. An induction heating cooker equipped with a heating means for heating the food is common.

JP, 2011-243320, A

  In the induction heating cooker described in Patent Document 1, when making a large quantity of one cook or making two cooks simultaneously on the top plate, the cookware is small with one heating coil and one cookware, There is a problem that it can not be made in large quantities, and it takes time to cook twice.

  The induction heating cooker of the present invention has been made to solve the above-mentioned problems, and the plate 3 is disposed, and the plurality of heating coils 13 in the main body 2 below the plate 3 and the temperature of the heating object Control means for controlling the inverter means 72 based on the temperature detected by the infrared sensor S and the temperature detection element 21. The inverter means 72 supplies power to the heating coil 13. In the induction heating cooker provided with 74, the control means 74 can simultaneously heat and control a plurality of heating coils 13 and increase the detection temperature of the infrared sensor S and the temperature detection element 21 If the detected temperature rise value indicates a specified value or more, the supply of power to the heating coil 13 is stopped or reduced, and the heating coil 13 is heated rightward from the heating coil 13a. The heating coil 13c and the heating coil 13c are provided, and the heating coil 13c is disposed behind the heating coil right 13a or the heating coil left 13b, and the grill pan 42 is placed on the plurality of heating coils 13 and heating is performed. It is characterized by being possible.

  According to the induction heating cooker of the present invention, by using the grill pan on the top plate and controlling the plurality of heating coils individually at the same time, the heating unevenness is eliminated or the temperature difference is made depending on the location of the grill pan. It becomes possible to provide various cooking methods.

It is a perspective view of the state which accommodated the built-in type induction heating cooker in the system kitchen. It is an explanatory view showing the upper surface of the induction heating cooker of one example of the present invention. It is explanatory drawing which shows the state which removes the plate of the upper surface of the induction heating cooker of FIG. 1, and which a heating coil can be seen. It is sectional drawing which shows the internal structure seen from the side of an induction heating cooker. It is explanatory drawing which shows the upper surface operation part of the induction heating cooker of one Example of this invention. It is a block diagram explaining the heating part of the induction heating cooker of one Example of this invention, and its control. It is explanatory drawing which shows the area | region where the plate and grill pan of the upper surface of the induction heating cooker of one Example of this invention are placed. It is a figure which shows an example of the grill pan used with the induction heating cooker of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 8 show an embodiment of the induction heating cooker of the present invention. The cooker shown in FIG. 1 is a built-in induction cooker in which three pan receivers 6 a, 6 b and 6 c are provided on the plate 3.

  In addition, even if it is not a built-in type which inserts in a kitchen, a present Example may be a stationary-type heating cooker mounted in a kitchen.

  The main body 2 of the heating cooker is incorporated by being dropped from the upper surface of the system kitchen 1 and installed. After installation, the operation panel 5 can be operated from the front of the system kitchen 1.

  The cooker's pot (not shown) for cooking uses a non-crystallized glass placed on the top of the main body 2 as a base material and uses a heat-resistant paint whose heat resistance temperature is at least three hundred and several tens degrees It is painted on the back side of the letters and almost the entire surface, and placed on a glass printed plate 3 which serves as a non-slip pot on the front side.

  A cooking pot (not shown) can be cooked by being placed on the placement portion 6 drawn on the plate 3. In the placing section 6, the placing section right 6a and the placing section left 6b are disposed in front of the upper surface of the plate 3 on the top surface of the main body 2, and the placing section rear 6c is at the back (left rear) of both placing sections 6b. It is arranged. Here, the rear of the placement section 6c may be the back (right rear) of the placement section right 6a.

  The infrared sensor window right 26a and the infrared sensor window left 26b in FIG. 2 are inside the mounting portion right 6a and the mounting portion left 6b, respectively. A heating coil unit 25 (FIG. 3), which will be described later, for heating the cooking pot is disposed under each of the placement units 6 with the plate 3 interposed therebetween.

  The place 6c after the placement part is a place where it is difficult for the cook to reach the position. Therefore, when the cooking pot is placed on the mounting portion right 6a and the mounting portion left 6b at the front, if the hand reaches the rear 6c of the mounting portion, the mounting portion right 6a and the mounting portion left 6b Due to the steam generated during cooking from the cooking pot placed, it is difficult to perform cooking in which the hands are moved at 6c after the placement portion. Therefore, the type of cooking performed after the placement portion 6c is suitable for cooking where the cook does not have to move much hands, mainly for cooking such as simmering and heat retention. In addition, since the heating power is weak and the maximum power consumption is also limited, the heating power of the heating coil 13c (FIG. 6) installed in the mounting portion 6c after the mounting portion is the mounting portion right 6a and the mounting portion It is set to be weaker than the heating coil right 13a (FIG. 6) and the heating coil left 13b (FIG. 6) installed corresponding to the left 6b, and to reduce power consumption.

  In FIGS. 1 and 2, a frame 14 is provided to protect the peripheral end face of the plate 3. The frame front 14a attached to the front upper edge of the plate 3, the frame rear 14b attached to the rear upper edge of the plate 3, 14c attached to the right upper edge, and the frame left 14d attached to the left upper edge ing. In this example, the frame is divided into four pieces, but it may be an integral type, two pieces or any number of pieces, and there is no need to attach it to four sides of plate 3; It may be only two sides or only two sides on the left and right.

  Inside the main body 2 are provided a heating coil unit 25 and an electronic component which will be described later, which are heat generating members, and an intake port 7 for sucking in air from the outside of the main body 2 is provided in order to cool them. The illustrated intake port 7 is provided on the right side of the upper surface of the main body 2 toward the exhaust port 8 described later on the frame 14b, but in order to prevent suction of water droplets sucked or bumped into the vapor from the pot. The intake port may be provided on the operation panel 5 side without being provided on the upper surface. Further, the intake port 7 may be the exhaust port 8.

  The air taken in through the air intake port 7 is discharged from the air exhaust port 8 to the outside after cooling a heating coil unit 25 and an electronic component, which will be described later, which generate heat inside the main body 2.

  Next, the heating coil will be described with reference to FIG. The heating coil unit 25 for heating a cooking pot (not shown) is comprised of a heating coil 13, a coil base 24, and a ferrite (not shown). The heating coil unit 25 is disposed below the plate 3 of each mounting portion 6 so that a fixed gap is opened between the plate 3 and the heating coil 13. This gap is for flowing cooling air, which will be described later, to cool the plate 3 and the heat-resistant paint surface applied to the plate 3 and the heating coil. The heating coil unit right 25a is provided below the mounting portion right 6a, the heating coil unit left 25b is provided below the mounting portion left 6b, and the heating coil unit rear 25c is provided below the mounting portion 6c. There is.

  The winding of the heating coil 13 employs a litz wire in order to suppress the skin effect. A voltage of several tens of kHz and several hundreds of volts is applied to the heating coil 13 from an inverter means 72 described later in order to heat the cooking pot (not shown).

  The coil base 24 fixes the heating coil 13 from below, and a ferrite (not shown) is embedded in the coil base 24.

  The temperature detection of the pan, such as at the time of automatic cooking, is performed by the temperature detection elements 21 (21a, 21b, 21c) provided in the heating coil 13. The temperature at the bottom of the pot is indirectly detected via the plate 3. The temperature detection element 21 uses a thermistor, and the number of the temperature detection elements 21 is not limited to one and may be plural. Further, an infrared sensor S may be provided which detects infrared rays from the infrared sensor window right 26a and the infrared sensor window left 26b in FIG. Temperature detection of the pan, such as at the time of automatic cooking, is performed by an infrared sensor S and a temperature detection element 21 provided in the heating coil 13. Next, the inverter means 72 for exciting the heating coil 13 and its cooling will be described based on FIG. 4 (refer to FIG. 6 for the heating coil 13 and the inverter means 72). FIG. 4 is a longitudinal cross-sectional view of the heating cooker main body 2, and the board right 31a on which the inverter means 72 is mounted is described at the upper center. The right heating coil 25a is disposed on the upper stage thereof.

  Each component that generates heat is cooled by the air sent by the blower fan 20. Air entering from the intake opening 27 passes through the duct 28 and enters the fan inlet 29. The air is sent to the substrate right 31a through the right discharge port 30 by the blower fan 20, cools the electronic component 32, and then exits from the upper discharge portion 33b. The air discharged from the upper discharge portion 33 b cools the heating coil right 25 a and the plate 3 and is discharged from the exhaust port 8. Further, air is also sent from the blower fan 20 to the substrate 31 and the heating coil unit 25 from the blower fan 20 to the substrate left 31b and the heating coil unit left 25b, and after the heating coil unit 25c.

  Next, the operation of the heating coil 13 will be described with reference to FIG. The operation of the heating coil 13 is performed by a capacitive or mechanical upper surface operation unit 9 provided on the plate 3 or in front of the frame 14a. From the right, the upper surface operation unit right 9a, the upper surface operation unit after 9c, and the upper surface operation portion left 9b are arranged from the right corresponding to the placement portion right 6a, the rear portion 6c, and the left portion 6b. This arrangement is such that the operator can intuitively understand the relationship between the pan and the operation unit.

  As apparent from the figure, the upper surface operation unit right 9a and the upper surface operation unit left 9b have the same key arrangement. Therefore, hereinafter, the operation of the heating coil right 13a will be representatively described. An off / start key 48 is used to start and stop cooking, and the LED lamp 53 lights up during cooking.

  The firepower of cooking is selected by the firepower key 49. The keys are divided into four levels: low heat, low heat, medium heat and high heat, and individual keys are provided so that the required fire power can be set with a single operation. The standard of each thermal power is, for example, when 12 levels of thermal power adjustment can be done at maximum, the relationship between each thermal power and power consumption is equivalent to 100 W at “1” stage, 200 W at “2” stage, 300 W at “3” stage , "4" stage 400W, "5" stage 500W, "6" stage 800W, "7" stage 1.1 kW, "8" stage 1.4 kW, "9" stage 1.6 kW, " The 10 "stage is 2 kW, the" 11 "stage is 2.5 kW, and the" 12 "stage is 3 kW. The numerals in each step are numerals to be displayed on the upper surface display unit 10, which will be described later, as a standard of the thermal power. In addition, the relationship between firepower notation and actual stage display is “1” for low fire, “2”, “3”, “4”, “5” for low fire, “6”, “7”, “8 for midfire” "High fire" is assigned "9", "10", high power is assigned "11", "12". The fire power key 49 can be set directly to the representative power of the four levels of fire power, the low fire key 49 a is “1”, the low fire key 49 b is “4”, the middle fire key 49 c is “7”, and the high fire key 49 d is “10” The LED lamp 54 on the key portion which can be set to the power of the lamp lights up.

  51 is a timer key which is mainly selected when performing timer cooking such as simmering and heat retention. 52 is a menu key for selecting automatically cooked rice, fried food, boiling water, etc. When the menu key 52 is pressed, a menu is displayed on the upper surface display unit 10 described later, and displayed each time the menu key 52 is pressed Change the menu, and select the menu to use.

  In addition, adjustment of thermal power, setting of time at the time of timer cooking, setting of quantity of rice at the time of rice cooking, setting of finish adjustment of automatic cooking, setting of oil temperature at the time of fried food can be performed by the setting key 50 . The setting key 50 includes an UP key 50a for increasing the quantity at the time of setting and a DOWN key 50b for reducing the setting key 50, and indicates that the setting key 50 is effective when the LED lamp 55 in the setting key 50 lights up. When the light is off, it indicates that it is invalid.

  For example, the case where adjustment of a thermal power is performed with the setting key 50 is demonstrated. First, the midfire key 49c is depressed to set the thermal power to "7". Thereafter, when the UP key 50a of the setting key 50 is pressed twice, the numerals indicating the thermal power displayed on the upper surface display unit 10 described later are changed from "7" to "8" and "8" to "9" , High fire "9" is set. Along with this, as for the LED lamp 54 of the thermal power key 49 part, the LED lamp of the middle fire key 49 c is turned off, and the LED lamp of the high fire key 49 d is turned on. The same applies to other settings. For example, the operation of the setting key 50 after the timer key 51 is pressed is for time setting.

  Next, the upper surface operation unit 9c will be described. The main cooking of 6c after placing part is heat retention and simmering. The reason is as described above. Therefore, the heating power after heating coil 13c is designed to be smaller than the heating power of the other heating coils. For this reason, it is sufficient for the firepower notation to be low heat, low heat, medium heat, and even if the setting key 62 is cyclic type, it returns to its original state by pressing up to 3 times at maximum, so every heating power as in the front two heating coils 25a, 25b. The firepower setting key corresponding to is not provided. This makes it possible to secure an installation space for the key. In addition, the contents of the independent automatic cooking menu are limited to simmering, heat retention, etc. because it is designed to have limited thermal power.

  A mode in which the mounting portion left 6b and the mounting portion 6c are simultaneously used will be described. The menu keys 52, 60 and 64 of the upper surface operation unit right 9 can select a menu which can be used by simultaneous energization by pressing the simultaneous menu key 64b provided separately.

  The menu to be used for simultaneous energization can be selected by pressing any one of the menu keys 52, 60, 64 without separately providing the menu, or the operation panel 5 may be provided with an operation button. In addition, a menu may be provided in which three places of the placement unit 6 are used simultaneously.

  Referring to FIG. 5, the plurality of keys arranged in upper surface operation unit 9 are arranged in line in the width direction of main body 2 in front of the frame 14 a. Then, from the right toward the main body 2, the upper surface operation unit right 9a, the upper surface operation unit 9c, and the upper surface operation portion left 9b are arranged in this order.

  Next, the display reflecting the result of the above-mentioned operation will be described. The content corresponding to the key operation of the upper surface operation unit 9 is displayed on the upper surface display unit 10. The contents to be displayed are a thermal power display set by the upper surface operation unit 9, a time display for timer cooking, a display of a set oil temperature for fried food, and the like. The upper surface display unit 10 is disposed on the front side of the plate 3 placed on the upper surface of the main body 2 and on the back side of the plate 3. Therefore, when viewing the display, it is through the plate 3, so that the display portion of the upper surface display unit 10 is processed so that the display content can be viewed through the plate 3. In addition, the color of the backlight of the display unit is set so that the set thermal power can be easily understood by the image. In the present embodiment, the low flame is displayed in green, the medium flame is displayed in orange, and the high flame and high power are displayed in red.

  In the above embodiment, the upper surface display unit right 10a, the upper surface display unit after 10c, and the upper surface display unit left 10b corresponding to each upper surface operation unit 9, and the arrangement of each upper surface display unit is straight along the frame front 14a. In order to improve the visibility, the rear side 10c of the top display portion may be arranged closer to the rear side 6c of the mounting portion than the right side 10a of the top display portion and the left side 10b of the top display portion.

  The upper surface operation unit 9 and the upper surface display unit 10 are provided for each of the placement units 6 on the plate 3, and when the line is linearly shifted from the placement units 6 to the front side, The upper surface operation unit 9 and the upper surface display unit 10 corresponding to the placement unit 6 are arranged such that the upper surface operation unit 9 is positioned closer to the cook than the upper surface display unit 10 .

  Next, control will be briefly described with reference to FIG. The operation / display unit 75 includes the top operation unit 9, the top display unit 10, and the front operation unit 12 described above. The menu input at the operation unit of the operation / display unit 75, the thermal power information, the start / stop information of cooking, etc. are sent as an input signal 80 to the control means 74 described later, and the information recognized by the control means 74, the progress of cooking etc. Is sent to the operation / display unit 75 as a display signal 79 and displayed on the upper surface display unit 10.

  The control means 74 controls the heating unit based on the contents set by the operation / display unit 75 and a program such as automatic cooking incorporated in advance. Based on the set contents, setting information of start, stop and thermal power of cooking is sent to inverter control means 73 or heater control means 82 described later via control signal 78 (control signal 85). Then, temperature information is received by receiving a control signal 78 (control signal 85) carrying temperature information from a temperature detection element 21 (temperature detection means 38 not shown) provided in the heating unit and detecting the temperature. Moreover, although not shown in the block diagram, the control of the blower fan 20 is also performed, and the blower fan is operated during cooking.

  The inverter control means 73 monitors and corrects the setting of the power to the heating coil 13, the start and stop of energization, and the power consumption of the heating coil 13 based on the instruction of the control means 74. Then, the inverter control signal 76 is sent to the inverter unit 72 to control the inverter unit 72 (described later). For monitoring and correcting the power consumption of the heating coil 13, the power consumption is calculated from the input current and the input voltage of each heating coil 13 sent from the inverter means 72 described later by the detection signal 77, and the thermal power is a set value The inverter control signal 76 controls the inverter means 72 described later so that

  The inverter means 72 is a means for supplying power to the heating coil 13, and supplies power to the heating coil 13 based on an instruction from the inverter control means 73. The inverter 72 is provided for each heating coil 13 similarly to the inverter control means 73, and is provided with an inverter right 72a, an inverter left 72b, and an inverter post 72c. Then, the input voltage and the input current of each heating coil 13 are detected, put on each detection signal 77, and sent to the inverter control means 73.

  The present embodiment is configured as described above, and its operation will be described next.

  For example, it will be described that the user is trying to make yakisoba using the grill pan 42. Place the grill pan 42 (Fig. 8) on the grill pan area a40 (Fig. 7) which is on the placing section left 6b and 6c after the placing section, and press the simultaneous menu key 64b on the simultaneous menu to display the upper surface display left 10b and the upper surface display The rear 10c is turned on, and a manual menu for setting an automatic menu such as "fish-maru grilled" and a thermal power of the placement unit left 6b and the placement unit 6c is displayed. The setting key 58a, 58b or 62a, 62b is manually pressed to set the mounting portion left 6b to be a firepower, set the mounting portion 6c to be a heating power and push the cutting / starting 56 or 61 to start cooking. At first, in order to warm the grill pan 42, power is supplied with high thermal power to a set temperature, kept at a constant temperature when warming up, and notification of cooking start is notified. In cooking, the meat and vegetables are fried on the near side of the grill pan 42, and at the same time the noodles of the fried noodles are baked on the far side. The temperature of the grill pan 42 is detected using an infrared sensor S provided on the heating coil left 13b and a temperature detection element 21c provided on the heating coil 13c, and the thermal power is automatically adjusted. Rapid heating and simultaneous cooking can save time. Also, move the noodles at the back of the grill pan 42 to the near side of the grill pan 42 with the heating coil left 13b and start mixing it with meat and vegetables, then the heating coil 13c will be baked and the temperature sensing element 21c will be 15 seconds Set a specific value T of the temperature rise value to rise by 20 ° C, and when the rise value of the detected temperature becomes higher than the specific value T, it is judged as burnout and the thermal power is automatically limited or the power is turned off. Do. Further, by using the infrared sensor S, the temperature of the grill pan 42 can be finely detected, and cooking can be performed at a stable temperature.

  Yakisoba is raised in this embodiment, but it is also possible to grill fish. In the case of grilled fish, it is possible to know at which position the fish is placed by observing the temperature unevenness of the temperature detection element 21 and by using the infrared sensor S, it is possible to finely control the thermal power. Therefore, it is possible to notify the timing of turning over by voice, and when turning over, it is possible to start baking the back side due to the temperature decrease of the infrared sensor S or the temperature detection element 21.

  Next, in the case where the grill pan 42 is the grill pan area b41 (FIG. 7) covering all three of the placing parts 6, the three placing parts 6 have different heating powers, and the steak is cooked simultaneously with different baking levels. Is possible. In addition, since the back of the mounting portion 6c is provided behind the mounting portion left 6b, the back of the mounting portion right 6a is only thermally conductive and can be used as a place to keep warm, and when making okonomiyaki or hot cake It can prevent the first cooking item from cooling down.

  The grill pan 42 is a material that can be heated by induction heating, and the bottom surface is flat as shown in FIG. 8, and the size that can be placed on the plurality of placement parts 6 like the grill pan area a40 and the grill pan area b42 It is. The bottom surface of the grill pan 42 may not necessarily completely cover the two placing portions 6 in the case of the grill pan region a40 and the three placing portions 6 in the case of the grill pan region b41. Further, the infrared sensor S detects infrared radiation emitted from the bottom of the grill pan 42 through the infrared sensor window 26. The temperature detection element 21 uses a thermistor in the above embodiment.

  As described above, according to the present embodiment, by using the grill pan 42 on the plate 3 and simultaneously controlling the plurality of heating coils 13 at the same time, uneven heating is eliminated or a temperature difference is given depending on the position of the grill pan 42. Thus, it is possible to provide an induction heating cooker in which various cooking methods can be realized.

  2 ... main body, 3 ... plate, 13 ... heating coil, 13a ... heating coil right, 13b ... heating coil left, 13c ... after heating coil 42 ... grill pan, 21 ... Temperature detection element, 72 ... Inverter means, 74 ... Control means, S ... Infrared sensor

Claims (2)

A plate for mounting the object to be heated is disposed on the upper surface of the main body, a plurality of heating coils in the main body below the plate, an infrared sensor for detecting the temperature of the object to be heated, a temperature detection element, In an induction heating cooker comprising: inverter means for supplying electric power to a heating coil; and control means for controlling the inverter means based on the infrared sensor and the detected temperature of the temperature detection element,
The control means is capable of simultaneously controlling the plurality of heating coils simultaneously, and determines an increase value of the detection temperature of the infrared sensor and the temperature detection element, and an increase value of the detection temperature is not less than a specific value When indicated, stop or reduce the power supply to the heating coil,
The plurality of heating coils include a heating coil right, a heating coil left, and a heating coil rear, and the heating coil is disposed behind the heating coil right or the heating coil left after the heating coil.
An induction heating cooker characterized in that a container for containing an object to be heated is placed on the plurality of heating coils and heating is possible. When the rear of the heating coil is behind the right of the heating coil, the simultaneous menu key of the upper operation portion is pressed when the container for containing the object to be heated is placed after the heating coil and above the right of the heating coil , And the upper surface display unit and the upper surface display unit right are displayed.
When the rear of the heating coil is behind the left of the heating coil, the simultaneous menu key of the upper operation unit is pressed when the container for containing the object to be heated is placed after the heating coil and above the left of the heating coil The induction heating cooker according to claim 1, wherein the upper surface display unit and the upper surface display unit are displayed.

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