JP5233862B2 - Electromagnetic cooker - Google Patents

Description

  The present invention relates to an electromagnetic cooker used in general homes, offices, restaurants and the like.

  Conventionally, this type of electromagnetic cooker has one heating coil formed in a spiral shape with respect to one object to be heated, and adjusts the heating power by driving and controlling one heating coil with a high-frequency inverter. (For example, refer to Patent Document 1).

  In addition, a heating coil divided so that the heating area corresponds to two types of objects to be heated is provided, and heating according to the size of the object to be heated is performed according to the operation content of the operation key for selecting the object to be heated (For example, refer to Patent Document 2).

JP 2004-031247 A JP-A-5-47463

  However, in the conventional configuration described in Patent Document 1, if the size of the heating coil and the object to be heated are different, the leakage magnetic flux increases and the heating efficiency decreases, or the heating distribution is uneven and the cooking performance decreases. Therefore, there is a problem that the size of the object to be heated is limited.

  In addition, in the conventional configuration described in Patent Document 2, a heating coil divided to correspond to two types of large and small objects to be heated can be provided, and a heating area can be selected with an operation key for selecting large and small objects to be heated. When heating a small object to be heated, the other heating coil is wasted.

  For this reason, when this conventional technology is used in a multi-port electromagnetic cooker having a large number of heating ports, one can select a large or small object to be heated, but the other cannot secure a space for installing a heating coil. There is a problem that only heated objects can be heated.

  The present invention solves the above-described conventional problem, and adjusts at least one of the position, size, and quantity of the induction heating unit in accordance with at least one of the position, size, and quantity of the object to be heated. An object is to provide an electromagnetic cooker in which the correspondence between the induction heating unit and the operation unit is clarified.

In order to solve the conventional problems, an electromagnetic cooker according to the present invention includes a top plate on which an object to be heated is placed, a plurality of heating coils arranged in substantially the same plane, and heating of the heating coil. A plurality of heating operation units for inputting instructions such as stop and heating power setting, an inverter unit for controlling the plurality of heating coils, and a control unit for controlling the inverter unit based on the instructions input to the heating operation unit; Information for selecting a heating coil that can be energized and a heating coil that cannot be energized among a plurality of heating coils in order to adjust the positions of two or more induction heating units, and heating that is selected as energizable From the information storage part which memorized heating coil pattern information which consists of information which chooses a plurality of heating operation parts which can input directions to a coil, and a plurality of the heating coil pattern information memorized by the information storage part A heating coil pattern selected by the selection means for controlling the heating coil that can be energized by the heating coil pattern information selected by the selection means. This is performed based on the operation content of the heating operation unit which can input an instruction by information, and a heatable region and a non-heatable region are formed on the top plate.

  Thereby, not only can the position of the induction heating unit be adjusted, but also the correspondence between the induction heating unit and the operation unit can be clarified.

  The electromagnetic cooker of the present invention can select a combination pattern of a heating coil that can be energized and a heating coil that cannot be energized by a selection means, and can not only adjust the position of the induction heating unit but also induction heating. The correspondence between the control unit and the operation unit can be clarified.

External view of the electromagnetic cooker in Embodiment 1 of this invention The circuit block diagram of the electromagnetic cooker in Embodiment 1 of this invention The block diagram of the light display means of the electromagnetic cooker in Embodiment 1 of this invention The circuit diagram of the inverter part of the electromagnetic cooker in Embodiment 1 of this invention The block diagram of the heating operation part of the electromagnetic cooker in Embodiment 1 of this invention The relationship diagram of the several heating coil 7 of the electromagnetic cooker in Embodiment 1 of this invention, the heatable area | region formed on the top plate 10, and a non-heatable area | region The figure which shows the memory | storage data of the information storage part of the electromagnetic cooker in Embodiment 1 of this invention. Conversion diagram of pattern of heatable area of electromagnetic cooker in embodiment 1 of the present invention Current waveform diagram of nine heating coils located below heatable region A27 of the electromagnetic cooker in Embodiment 1 of the present invention Current waveform diagram of four heating coils positioned below heatable region C29 of the electromagnetic cooking device in Embodiment 1 of the present invention The figure which shows other embodiment of this invention The figure which shows other embodiment of this invention The figure which shows other embodiment of this invention The figure which shows other embodiment of this invention The figure which shows other embodiment of this invention The figure which shows other embodiment of this invention

In the first invention, a top plate on which an object to be heated is placed, a plurality of heating coils arranged substantially in the same plane, and a plurality of instructions for starting and stopping heating of the heating coils, setting a heating power, etc. A heating operation unit, an inverter unit for controlling the plurality of heating coils, a control unit for controlling the inverter unit based on an instruction input to the heating operation unit, and positions of two or more induction heating units. To adjust, among the plurality of heating coils, information for selecting a heating coil that can be energized and a heating coil that cannot be energized, and a plurality of instructions that can be input to the heating coil that is selected as being energizable An information storage unit storing heating coil pattern information including information for selecting a heating operation unit, and one heating coil pattern information from a plurality of the heating coil pattern information stored in the information storage unit. A selection means for selecting, and the control unit is capable of inputting an instruction with the heating coil pattern information selected by the selection means for controlling the heating coil that can be energized with the heating coil pattern information selected by the selection means. It is possible not only to adjust the position of the induction heating unit of two or more openings by forming a heatable region and a non-heatable region on the top plate, based on the operation content of the heating operation unit that is performed. The correspondence relationship between the induction heating unit and the operation unit can be clarified.

  In addition, by adjusting the position of the induction heating unit, not only can the heated object be placed in the heatable area adjusted by the user, but the user can be heated at an easy-to-use position. By retracting the object to be heated that is not heated to the non-heatable area adjusted by the user, the pan will be heated against the user's intention, making it unsafe such as cooking failure and ignition due to empty baking Can be prevented, and usability and safety can be improved.

  In the second invention, a top plate on which an object to be heated is placed, a plurality of heating coils arranged in substantially the same plane, and a plurality of instructions for starting and stopping heating of the heating coils, setting a heating power, etc. The size of the heating operation unit, the inverter unit for controlling the plurality of heating coils, the control unit for controlling the inverter unit based on the instructions input to the heating operation unit, and the size of the induction heating unit having two or more ports Information for selecting a heating coil that can be energized and a heating coil that cannot be energized among the plurality of heating coils, and a plurality of heatings that allow an instruction to be input to the heating coil that is selected as being energizable One heating coil pattern information is selected from an information storage unit storing heating coil pattern information including information for selecting an operation unit, and a plurality of heating coil pattern information stored in the information storage unit. And a controller that allows the controller to input an instruction with the heating coil pattern information selected by the selection unit to control the heating coil that can be energized with the heating coil pattern information selected by the selection unit. It is possible to adjust the size of the induction heating unit having two or more openings by forming a heatable region and a non-heatable region on the top plate. The correspondence relationship between the induction heating unit and the operation unit can be clarified.

  In addition, by adjusting the size of the induction heating unit, by placing the object to be heated in the heatable region adjusted by the user, heating is performed according to the size of the object to be heated that the user wants to use. In addition to being able to cook, the pan is heated against the user's intention by evacuating the object to be heated to the non-heatable area adjusted by the user. It becomes possible to prevent unsafe conditions such as ignition due to fire, and improve usability and safety.

  According to a third aspect of the present invention, there are provided a top plate for placing an object to be heated, a plurality of heating coils arranged substantially in the same plane, and a plurality of instructions for starting and stopping heating of the heating coils, setting instructions for heating power, and the like. In order to adjust the quantity of the induction heating unit, the inverter unit that controls the plurality of heating coils, the control unit that controls the inverter unit based on the instruction input to the heating operation unit , Among the multiple heating coils, select the heating coil that can be energized and the information to select the heating coil that cannot be energized, and multiple heating operation units that can input instructions to the heating coil that is selected as energizable An information storage unit storing heating coil pattern information including information to be selected, and a selection for selecting one heating coil pattern information from the plurality of heating coil pattern information stored in the information storage unit The control unit is configured to control heating of the heating coil that can be energized based on the heating coil pattern information selected by the selection unit, and heating that is capable of inputting an instruction based on the heating coil pattern information selected by the selection unit. The number of induction heating units can be adjusted by forming a heatable region and a non-heatable region on the top plate, based on the operation contents of the operation unit. Can be clarified.

In addition, by adjusting the quantity of the induction heating unit, by placing the article to be heated in the heatable area adjusted by the user, it is possible to heat according to the quantity of the article to be heated that the user wants to use. Not only that, but by evacuating the object to be heated that is not heated to the non-heatable area adjusted by the user, the pan will be heated against the user's intention, and it will be ignited by cooking failure or empty baking. It becomes possible to prevent unsafety etc., and usability and safety can be improved.

  In particular, in the electromagnetic cooker according to any one of the first to third inventions, the fourth invention is configured so that the heating coil that is capable of inputting instructions by one heating operation unit is heated or stopped substantially simultaneously. By controlling the inverter unit, the control unit can perform a heating operation using a plurality of heating coils as one induction heating unit, and the user does not need to operate each of the plurality of heating coils. It is possible to supply an easy-to-use cooker.

  In the fifth aspect of the invention, in particular, in the electromagnetic cooker of any one of the first to fourth aspects of the invention, the information storage unit is selected to be able to energize all the heating coils in order to form one induction heating unit. And storing the heating coil pattern information consisting of information for selecting one heating operation unit that enables input of instructions to all the heating coils, so that the entire surface of the top plate on which the object to be heated is placed is stored. It becomes possible to make it a heatable region, and it becomes possible to uniformly heat the bottom surface of the object to be heated even in a cooking menu (for example, teppanyaki) that requires a large heating area, thereby improving cooking performance. it can.

  In particular, the sixth invention is the electromagnetic cooker according to any one of the first to fifth inventions, wherein the information storage unit can be energized among a plurality of heating coils in order to form one induction heating unit. By further storing heating coil pattern information consisting of information for selecting a heating coil and a heating coil that cannot be energized, and information for selecting one heating operation unit that can input an instruction to the energizable heating coil, It is possible to increase the heatable area, and even in cooking menus that require a large heating area (for example, teppanyaki), the bottom surface of the object to be heated can be heated uniformly, and cooking performance can only be improved. It is now possible to place pans, lids, knives, etc. that you do not want to heat in unheatable areas. It is ignited such unsafe due can be prevented.

  In a seventh aspect of the invention, in particular, in the electromagnetic cooker according to any one of the first to sixth aspects of the invention, the information cooker includes a plurality of selection means, and the information storage unit corresponds to the plurality of selection means and heating coil pattern information. Relationship information is stored, and by operating the selection means and selecting one heating coil pattern information corresponding to the selection means, the user can select at least the position, size, and quantity of the induction heating unit. Any one of them can be directly selected, and the number of operations can be reduced to improve usability.

  According to an eighth aspect of the invention, in particular, in the electromagnetic cooker according to any one of the first to sixth aspects, the heating coil pattern information to be selected is switched every time one selection means is operated. By operating one selection means, the user can select at least one of the position, size, and quantity of the induction heating unit, and the operation can be simplified.

  In the ninth aspect of the invention, in particular, in the electromagnetic cooker according to any one of the first to eighth aspects, the selection unit can be operated only when the inverter unit is stopped, so that the user can mistake during heating. It is possible to prevent the heatable area from changing by operating the selection means, and the pan will be heated against the user's intention, making it unsafe such as cooking failure or ignition due to empty baking. It becomes possible to prevent, and usability and safety can be improved.

The tenth invention is used during heating, particularly in the electromagnetic cooker according to any one of the first to eighth inventions, by enabling the operation of the selection means only for a predetermined time after turning on the power. It is possible not only to prevent the user from accidentally operating the selection means and changing the heatable area to cause cooking to fail, but also to prevent the fire from burning by emptying the pan that is against the user's intention. ,
Usability and safety can be improved.

  In an eleventh aspect of the invention, in particular, in the electromagnetic cooker according to any one of the first to tenth aspects of the present invention, a light display means is provided, and a heatable area on the top plate is displayed by the light display means. It is possible to visually recognize the position, size, and quantity of the heatable region.

  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 external view of an electromagnetic cooker according to the first embodiment of the present invention. FIG. 2 is a circuit block diagram of the electromagnetic cooker according to the first embodiment of the present invention. FIG. 3 is a block diagram of the light display means in the first embodiment of the present invention. FIG. 4 is a circuit diagram of the inverter unit of the electromagnetic cooking device 1 according to the first embodiment of the present invention. FIG. 5 is a configuration diagram of the heating operation unit according to the first embodiment of the present invention. FIG. 6 is a diagram showing the relationship between the plurality of heating coils 7 and the heatable region and the non-heatable region formed on the top plate 10 according to the first embodiment of the present invention. FIG. 7 is a diagram showing data stored in the information storage unit according to the first embodiment of the present invention.

  1 and 2, the electromagnetic cooker 1 has a predetermined frequency by a switching element that is turned on and off at a predetermined timing via a filter circuit unit 3 including a rectifier circuit, a power factor correction circuit, and the like from a 200 V commercial power source 2. An inverter circuit 4 that generates a high-frequency power, an inverter unit 5 composed of a plurality of inverter circuits 4, a control unit 6 that drives and controls the inverter unit 5, and a plurality of heating coils 7 that generate a high-frequency magnetic flux by the high-frequency power, , A heating coil unit 8 composed of a plurality of heating coils 7 arranged on substantially the same plane, an output power detection unit 9 (FIG. 4) for detecting output power supplied to the heating coil unit, and a plurality of heating coils 7 The top plate 10 made of hard glass disposed above the object, the object to be heated 11 disposed above the top plate 10, and the output power or temperature by the user Positions and sizes of a plurality of heating operation units 12 for adjustment, display means 13 for displaying states such as output setting, temperature, and automatic cooking menu, and two or more induction heating units or one induction heating unit In order to adjust at least one of the quantities, information that stores a plurality of heating coil pattern information, which is information for selecting a heating coil 7 that can be energized and a heating coil 7 that cannot be energized, among the plurality of heating coils 7 The storage unit 14 and a selection unit 15 that selects one piece of heating coil pattern information from a plurality of pieces of heating coil pattern information stored in the information storage unit 14 are provided at positions different from the heating operation unit 12.

  Furthermore, as shown in FIG. 3, the electromagnetic cooking device 1 includes a light guide unit 16 a disposed below the top plate 10 and a light emitting unit 16 b that generates light that passes through the top plate 10, and the selection unit 15. The light display means 16c which displays the outer peripheral part of the heatable area | region formed based on the heating coil pattern information selected by (1) on the top plate 10 is shown.

  The control unit 6 also controls the light emitting unit 16b. And based on the heating coil pattern information memorize | stored in the information storage part 14 selected by the selection means 15, the control part 6 controls the light emission part 16b, and displays a heatable area | region on the top plate 10. FIG.

  Moreover, the electromagnetic cooker 1 has the main power switch 17 which connects / disconnects the 200V commercial power source 2 and the filter circuit part 3, as shown in FIG.

  Here, the induction heating unit means a group of heating coils 7 that constitute one heatable region and can be energized.

  The inverter circuit 4 shown in FIG. 4 includes a first switching element 17, a second switching element 18, a snubber capacitor 19 that reduces the switching loss of the first and second switching elements 17, 18, and the heating coil 7. The first switching element 17 and the second switching element 18 that receive the output power detection unit 9 that detects the power to be supplied, the heating operation / stop signal from the control unit 6 and the detection result of the output power detection unit 9 are received. And a resonance capacitor 21.

  As for the output power to the heating coil 7, the conduction ratio setting unit 20 receives the heating start, heating power adjustment, and heating stop signals sent from the control unit 6 based on the operation content of the heating operation unit 12, and the output power detection unit The heating operation is controlled by setting the conduction ratio of the first switching element 17 and the second switching element 18 while comparing with the detection result 9.

  Usually, as shown in FIG. 2, in order to heat 40 heating coils 7, a filter circuit unit 3 including 40 rectifier circuits and power factor correction circuits and an inverter circuit 4 are provided, and the heating coils 7 are provided. In this embodiment, the filter circuit unit 3 including the rectifier circuit / power factor correction circuit and the inverter circuit 4 are configured as a pair. In this embodiment, the number of components is reduced and an inexpensive and small electromagnetic cooker is supplied. A plurality of heating circuits 7 and a plurality of pairs of inverter circuits 4 are connected to a filter circuit section including one rectifier circuit, power factor correction circuit, and the like.

  In the present embodiment, 40 heating coils 7 and 40 inverter circuits 4 are provided. However, if N inverter circuits 4 are provided, N heating coils can be connected.

  Moreover, although it is possible to heat even if two or more heating coils 7 are connected in parallel to one inverter circuit 4, the heating power of the electromagnetic cooker is adjusted by individually controlling each heating coil 7. In this embodiment, the configuration shown in FIG. 2 is adopted.

  Therefore, the electromagnetic cooking device 1 according to the present embodiment includes the first heating coil 7 (1) to the 40th heating coil 7 (40) and the first inverter circuit 4 (1) to the 40th inverter circuit, respectively. It can be controlled individually by driving at 4 (40).

  For example, by changing the operating frequency of the first inverter 4 (1) and the second inverter 4 (2) and the ON time of the switching element, the first heating coil 7 (1) can be made of iron or magnetic stainless steel pan. In the second heating coil 7 (2), it is possible to heat non-magnetic stainless steel, aluminum, or the like, which is a material whose load characteristics are significantly different from iron or magnetic stainless steel.

  The inverter circuit 4 in this embodiment uses a single-ended push-pull inverter, but a bridge-type inverter can also be applied. The electromagnetic cooker 1 according to the present embodiment uses a microcomputer as the information storage unit 14.

  In FIG. 5, the block diagram of the heating operation part 12 of the electromagnetic cooker in the 1st Embodiment of this invention is shown.

  The heating operation unit 12 includes three operation units, a first heating operation unit 12a, a second heating operation unit 12b, and a third heating operation unit 12c so as to correspond to each heatable region.

  Each operation unit includes a “heating on / off” key 22, an “output up” key 23, an “output down” key 24, a “cooking menu” key 25, and a “timer” key 26.

Further, FIG. 6 shows a relationship diagram between the plurality of heating coils 7, the heatable region formed on the top plate 10, and the non-heatable region.

  As shown in FIG. 6, the plurality of heating coils 7 have a spiral circular shape with a diameter of 70 mm. However, other shapes such as a rectangle, an ellipse, a polygon, or a combination thereof may be used.

  Further, the plurality of heating coils 7 are 40 in a total of 8 rows in the horizontal direction and 5 rows in the vertical direction. Further, although the plurality of heating coils 7 are arranged vertically and horizontally, there is no problem even if they are not aligned.

  As shown in FIG. 7, the information storage unit 14 includes information for selecting a heating coil that can be energized and a heating coil that cannot be energized among the plurality of heating coils, and a heating coil that is selected as energizable. Heating coil pattern information including information for selecting a plurality of heating operation units capable of inputting instructions is stored.

  About the electromagnetic cooker comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  FIG. 8 is a conversion diagram of the pattern of the heatable region of the electromagnetic cooker according to the first embodiment of the present invention, and FIG. 9 is the lower side of the heatable region A27 of the electromagnetic cooker according to the first embodiment of the present invention. FIG. 10 is a current waveform diagram of the four heating coils positioned below the heatable region C29 of the electromagnetic cooker according to the first embodiment of the present invention.

  First, when the user turns on the main power switch 17 of the electromagnetic cooker 1 to connect the 200V commercial power supply 2 and the filter circuit unit 3, the power conversion circuit shown in FIG. 2 is energized. At this time, the control unit 6 reads the heating coil pattern information (a) set to the initial value of the heating coil pattern information from the information storage unit 14, and the control unit 6 controls the light emitting unit 16 b and controls the top plate 10. Then, the heatable region shown in FIG.

  In addition, by setting the heating coil pattern information used last time to the initial value of the heating coil pattern information in the information storage unit 14, it becomes possible to set the pattern of the heatable region with high use frequency as the initial pattern, It is possible to improve the usability by omitting the user's trouble of selecting each time.

  In the electromagnetic cooking device 1 according to the present embodiment, when the selection unit 15 arranged in the vicinity of the heating operation unit 12 on the top plate 10 is operated by the user, the control unit 6 starts from the information storage unit 14 in a predetermined order. Read out the heating coil pattern information, select the heating coil 7 that can be energized and the heating coil 7 that cannot be energized among the plurality of heating coils 7, adjust the position, size and quantity of the induction heating part, On the plate 10, a heatable region and a non-heatable region according to a user's request are formed.

  Then, the user can visually recognize the heatable area on the top plate by the light display means 16c (FIG. 3). In this Embodiment, it sets so that heating coil pattern information may be read from the information storage part 14 in order of (a), (b), (c), (d), and the control part 6 is from the information storage part 14. The heating coil pattern information (a), (b), (c), and (d) are read in the order, and the control unit 6 controls the light emitting unit 16b, and on the top plate 10, FIGS. ), (C), and (d) are displayed in order of heatable areas.

  The user selects the heating coil pattern information by the selection means 15 and selects the optimum pattern for the cooking menu while visually recognizing the heatable area displayed on the top plate 10.

  That is, by selecting the heating coil pattern information by the selection unit 15, the three heating units shown in FIG. 8B can be heated from the three induction heating units forming the three heatable regions shown in FIG. The position and size of the induction heating unit are adjusted to the three induction heating units forming the region. Further, the position of the induction heating unit from the three induction heating units forming the three heatable regions shown in FIG. 8B to the one induction heating unit forming the one heatable region shown in FIG. 8C. Adjust the size and quantity.

  Further, the position of the induction heating unit is changed from one induction heating unit forming one heatable region shown in FIG. 8C to two induction heating units forming two heatable regions shown in FIG. 8D. Adjust the size and quantity.

  When the user selects the heating means with the selection means 15 and the optimum heatable area is displayed in the cooking menu, the heating object 11 such as a pan or a frying pan is placed in the heatable area to be used, and the selected heating coil is selected. Heating is performed by operating the “heating on / off” key 22 of the heating operation unit 12 in which instructions can be input to the plurality of heating coils 7 located below the heatable region where the object 11 is placed according to the pattern information. Start.

  From the heating coil pattern information of FIG. 7, the induction heating unit that forms the heatable region A27 shown in FIG. 8A is operated by the first heating operation unit 12a and is shown in FIG. 8A. The induction heating unit that forms the heatable region B28 is operated by the third heating operation unit 12c, and the induction heating unit that forms the heatable region C29 shown in FIG. 8A is the second heating operation unit 12b. Suppose you operate with.

  When using the induction heating unit that forms the heatable region A27, heating is started with the “heating on / off” key 22 of the first heating operation unit 12a, and the “output up” key 23, “ The "output down" key 24, the "cooking menu" key 25, and the "timer" key 26 are operated for cooking.

  Similarly, when using the induction heating unit that forms the heatable region B28, the third heating operation unit 12c is used. When using the induction heating unit that forms the heatable region C29, the second heating operation unit 12b is used. Use to operate.

  When the number of induction heating parts is smaller than the number of operation parts as in the induction heating parts corresponding to FIGS. 8C and 8D, it may be assigned to any of the first to third heating operation parts 12a to 12c.

  In the present embodiment, as shown in FIG. 7, the heatable region G of the heating coil pattern (c) is operated by the second heating operation unit.

  The heatable area H of the heating coil pattern (d) is set to be operated by the first heating operation section, and the heatable area I is set to be operated by the third heating operation section.

  As shown in FIG. 6, nine heating coils are shown below the heatable area A27 in FIG. 8A, nine heat coils are below the heatable area B28, and four heatable areas C29 are below the heatable area C29. Each heating coil is located, and heating start, heating power adjustment, and heating stop are performed almost simultaneously.

  FIG. 9 shows current waveforms flowing in the respective heating coils when an iron pan is placed in the heatable region A27 and heated and stopped by nine heating coils located below the heatable region A27.

  FIG. 10 shows current waveforms flowing in the respective heating coils when an aluminum pan is placed in the heatable region C29 and heated and stopped by the four heating coils positioned below the heatable region C29.

  9 and 10, it can be seen that the plurality of heating coils 7 positioned below one heatable region are started to start heating, adjust thermal power, and stop heating substantially simultaneously. Each of the heatable regions A27 and C29 operates independently at different frequencies in accordance with the material and shape of the object to be heated 11.

  Further, in FIG. 8A, the heating coils located below the non-heatable areas other than the heatable areas A27, B28, and C29 are not energized. ).

  The same applies to FIGS. 8B to 8C. Furthermore, by making it possible to visually recognize the heatable area with the light display means 16c, the place where the pan, lid, knife, etc., which is not to be heated is clarified, and the pan contrary to the intention of the user can be obtained. It can be heated to prevent ignition due to empty baking, improving usability and safety.

  Further, among at least one or more heatable regions displayed on the top plate 10 by the light display means 16c, one or more heatable regions are in a heating operation, that is, the inverter unit 5 is driven. In some cases, the operation of the selection means 15 is invalidated so that the selection means 15 is accidentally touched and the position, size, and quantity of the induction heating unit do not change against the user's intention.

  That is, by making it possible to operate the selection means 15 only when the inverter unit 5 is stopped, it is possible to prevent unsuccessful cooking due to cooking failure or unintentional cooking of the pan.

  As described above, the electromagnetic cooker 1 according to the present embodiment includes information for selecting a heating coil that can be energized and a heating coil that cannot be energized among a plurality of heating coils, and heating that is selected as energizable. An information storage unit 14 that stores heating coil pattern information including information for selecting a plurality of heating operation units capable of inputting instructions to the coil, and the information storage unit 14 that is stored by the user operating the selection unit 15. One heating coil pattern information can be selected from a plurality of heating coil pattern information, and at least one of the position, size, and quantity of the induction heating unit can be adjusted, as well as the induction heating unit and the operation unit. Can be clarified.

  In the present embodiment, the user adjusts at least one of the position, size, and quantity of the heatable region by adjusting at least one of the position, size, and quantity of the induction heating unit. In addition to heating the object to be heated at an easy-to-use position, heating it according to the size of the object to be used, and heating according to the number of objects to be used, By adjusting at least one of the position, size, and quantity of the non-heatable area, the non-heated object is evacuated to the non-heatable area adjusted by the user. Can be prevented from becoming unsafe, such as cooking failure or ignition due to empty baking, improving usability and safety.

The control unit 6 controls the inverter unit 5 so that the plurality of heating coils 7 arranged below the heatable region where instructions can be input by one heating operation unit are heated or stopped substantially simultaneously. This eliminates the need for the user to operate each of the plurality of heating coils 7,
The number of operations can be reduced.

  Moreover, in this Embodiment, as shown to the heating coil pattern information (c) of FIG. 7, in order to form the 1 induction heating part, the information which selects that all the heating coils 7 can be supplied with electricity, all By further storing the heating coil pattern information including the information for selecting the second heating operation unit 12b that can input an instruction to the heating coil 7, it is possible to heat the entire top plate on which the object to be heated is placed. It becomes possible to make it a region, and even the cooking menu (for example, teppanyaki) that requires a large heating area can uniformly heat the bottom surface of the object to be heated, which can only improve the cooking performance. In addition, it is possible to input an instruction to all the heating coils 7 with one operation unit, and it is possible to reduce the number of operations and clarify the correspondence between the induction heating unit and the operation unit.

  Further, by enabling the operation of the selection means 15 of the present embodiment only for a predetermined time after the power is turned on, the user can mistakenly operate the selection means during heating to change the heatable area. In addition to preventing unsuccessful cooking, the pan that is not intended by the user can be heated to prevent ignition due to empty baking, thereby improving usability and safety.

  Further, in the present embodiment, the light display means 16 is provided, and at least one or more heatable areas are displayed on the top plate 10 so that the user can visually recognize the position, shape, and quantity of the heatable areas. Is possible.

  Further, in the present embodiment, one selection means 15 is provided, and each time the selection means 15 is operated, the heating coil pattern information is switched in a predetermined order from the information storage unit 14, but as shown in FIG. The information storage unit 14 includes correspondence information between the plurality of selection unit units 30 and the heating coil pattern information, and the selection unit unit 30 is operated by operating the selection unit unit 30. By selecting one heating coil pattern information corresponding to 30, it becomes possible for the user to directly select at least one of the position, size and quantity of the induction heating unit, reducing the number of operations and improving usability. Can be improved.

  Furthermore, in the present embodiment, the light display means 16c is arranged only at a necessary location, but as shown in FIG. 12, the light is displayed at the outer peripheral positions of all the heating coils arranged below the top plate 10. Display means may be provided.

  As a result, the heating coil pattern information that can be stored in the upper storage unit 14 can be increased, and the choice of the position, size, and quantity of the heatable region on the top plate 10 is increased, and the electromagnetic cooking is more convenient. Can be used.

  Furthermore, in this embodiment, all the heating coils 7 are selected as heatable, and one heating as shown in FIG. 8C is possible on the top plate 10 in order to form one induction heating unit. Although the heating coil pattern information forming the region is stored, it is not selected that some of the heating coils 7 can be heated, and among the plurality of heating coils 7, the heating coil 7 that can be energized and the heating coil 7 that cannot be energized are selected. In order to select and form a single induction heating unit, information for forming one heatable region as shown in FIG. 13 on the top plate and one instruction that can be input to the energized heating coil You may further memorize | store the heating coil pattern information which consists of information which selects a heating operation part.

As a result, it becomes possible to increase the heatable area, and even the cooking menu (for example, teppanyaki) that requires a large heating area can uniformly heat the bottom surface of the object to be heated, thereby improving the cooking performance. As well as being able to put a pot, lid, knife, etc. that you do not want to heat in an unheatable area, you can put a pot, lid, knife, etc. Not only can it be prevented from becoming unsafe such as ignition, but it becomes possible to input instructions to all the heating coils 7 with one operation unit, and the correspondence between the induction heating unit and the operation unit can be reduced by reducing the number of operations. Can be clear.

  Furthermore, in the present embodiment, 40 heating coils are used as shown in FIG. 6, but the information stored in the information storage unit 14 is made into four patterns shown in FIG. 14 as shown in FIG. You may form with six heating coils.

  As a result, the number of heating coils and the inverter circuit 4 for driving the heating coils is reduced, and the electromagnetic cooker can be reduced in size and weight.

  In the present embodiment, the heating operation unit 12 is a touch key that detects capacitance, but may be replaced with a push switch key or a voice key.

  Furthermore, a system including a step-up / step-down / step-up / step-down circuit after the filter circuit unit 3 of the power conversion circuit may be used.

  Moreover, although the light display means 16c in this Embodiment uses LED for the light emission part 16b, you may use different light-emitting devices, such as a laser and a fluorescent tube.

  Furthermore, in this embodiment, the top plate 10 has the same color and paint pattern on the entire surface, but the top plate portion located above the light display means 16c is lighter than the other top plate portions as shown in FIG. The top plate 31 may be made of a material, color, or paint pattern that easily transmits light.

  Thereby, the brightness of the heatable region displayed on the top plate 10 by the light display means 16 is improved, and the user can easily see even when the periphery of the electromagnetic cooking device 1 is bright.

  As described above, the electromagnetic cooker according to the present invention can select the combination pattern of the heating coil that can be energized and the heating coil that cannot be energized by the selection means, and the position, size, and quantity of the induction heating unit. Since the correspondence between the induction heating unit and the operation unit can be clarified, it is effective not only for general homes and offices but also for use by professionals such as restaurants.

DESCRIPTION OF SYMBOLS 1 Electromagnetic cooker 5 Inverter part 6 Control part 7 Heating coil 9 Output power detection means 10 Top plate 12 Several heating operation part 14 Information storage part 15 Selection means 16C Light display means

Claims (11)

A top plate for placing an object to be heated, a plurality of heating coils arranged in substantially the same plane, a plurality of heating operation units for inputting instructions such as heating start and stop and heating power setting of the heating coils, An inverter unit for controlling the plurality of heating coils; a control unit for controlling the inverter unit based on an instruction input to the heating operation unit;
Information for selecting a heating coil that can be energized and a heating coil that cannot be energized among a plurality of heating coils, and a heating coil that is selected as energizable An information storage unit storing heating coil pattern information composed of information for selecting a plurality of heating operation units capable of inputting instructions to
Selecting means for selecting one of the heating coil pattern information from a plurality of the heating coil pattern information stored in the information storage unit,
The control unit operates the heating operation unit that is capable of inputting an instruction with the heating coil pattern information selected by the selection unit to control the heating coil that can be energized with the heating coil pattern information selected by the selection unit. An electromagnetic cooker which performs based on the contents and forms a heatable region and a non-heatable region on the top plate. A top plate for placing an object to be heated, a plurality of heating coils arranged in substantially the same plane, a plurality of heating operation units for inputting instructions such as heating start and stop and heating power setting of the heating coils, An inverter unit for controlling the plurality of heating coils; a control unit for controlling the inverter unit based on an instruction input to the heating operation unit;
Information for selecting a heating coil that can be energized and a heating coil that cannot be energized among a plurality of heating coils in order to adjust the size of the induction heating unit of two or more ports, and heating that is selected as energizable An information storage unit that stores heating coil pattern information including information for selecting a plurality of heating operation units capable of inputting instructions to the coil;
Selecting means for selecting one of the heating coil pattern information from a plurality of the heating coil pattern information stored in the information storage unit,
The control unit operates the heating operation unit that is capable of inputting an instruction with the heating coil pattern information selected by the selection unit to control the heating coil that can be energized with the heating coil pattern information selected by the selection unit. An electromagnetic cooker which performs based on the contents and forms a heatable region and a non-heatable region on the top plate. A top plate for placing an object to be heated, a plurality of heating coils arranged in substantially the same plane, a plurality of heating operation units for inputting instructions such as heating start and stop and heating power setting of the heating coils, An inverter unit for controlling the plurality of heating coils; a control unit for controlling the inverter unit based on an instruction input to the heating operation unit;
In order to adjust the number of induction heating units, input information to select a heating coil that can be energized and a heating coil that cannot be energized among multiple heating coils, and instructions to the heating coils that are selected as energizable An information storage unit storing heating coil pattern information including information for selecting a plurality of heating operation units to be enabled;
Selecting means for selecting one of the heating coil pattern information from a plurality of the heating coil pattern information stored in the information storage unit,
The control unit operates the heating operation unit that is capable of inputting an instruction with the heating coil pattern information selected by the selection unit to control the heating coil that can be energized with the heating coil pattern information selected by the selection unit. An electromagnetic cooker which performs based on the contents and forms a heatable region and a non-heatable region on the top plate. 4. The control unit according to claim 1, wherein the control unit controls the inverter unit so that a heating coil that is capable of inputting an instruction by one heating operation unit is heated or stopped substantially simultaneously. Electromagnetic cooker. The information storage unit is information for selecting that all the heating coils can be energized to form one induction heating unit, and information for selecting one heating operation unit that can input an instruction to all the heating coils. The electromagnetic cooker of any one of Claims 1-4 which further memorize | stored the heating coil pattern information which consists of. In order to form one induction heating unit, the information storage unit selects information on a heating coil that can be energized and a heating coil that cannot be energized among a plurality of heating coils, and instructs the heating coil that can be energized. The electromagnetic cooker of any one of Claims 1-5 which further memorize | stored the heating coil pattern information which consists of the information which selects the one heating operation part which can be input. The information storage unit stores correspondence information of the plurality of selection means and heating coil pattern information, and corresponds to the selection means by operating the selection means. The electromagnetic cooker according to any one of claims 1 to 6, wherein one heating coil pattern information is selected. The electromagnetic cooker according to any one of claims 1 to 6, wherein the heating coil pattern information to be selected is switched every time one selection means is operated. The electromagnetic cooker according to any one of claims 1 to 8, wherein the selection means can be operated only when the inverter unit is stopped. The electromagnetic cooker according to any one of claims 1 to 8, wherein the operation of the selection unit is made effective only during a predetermined time after the power is turned on. The electromagnetic cooker according to any one of claims 1 to 10, further comprising a light display means, wherein the light display means displays a heatable region on the top plate.