JPWO2017081859A1 - Induction heating cooker - Google Patents

Abstract

An induction heating cooker (100), which is formed on a top plate (2) on which an object to be heated is placed, a main body (1) having a top plate (2), and a top plate (2). The first induction heating area (3) on which the object is placed and the first induction heating area (3) on the top plate (2) are formed separately, and the second object on which the object to be heated is placed An induction heating area (4) and a control unit are provided. In addition, the control unit has a thermal efficiency when the object to be heated placed in the second induction heating area (4) is heated by the second heating coil (6), so that the object to be heated is in the first induction heating area. The drive of the 1st heating coil (5) and the 2nd heating coil (6) is controlled so that it may become more than the thermal efficiency at the time of mounting on (3) and heating with the 1st induction heating coil (5). Is configured to do.

Description

  The present disclosure relates to an induction heating cooker that induction-heats an object to be heated.

  Conventionally, in an induction heating cooker, a configuration in which a plurality of heating coils for inductively heating an object to be heated is arranged in a row in the horizontal direction (longitudinal direction) when viewed from the front is proposed in order to improve usability. (For example, refer to Patent Document 1).

  FIG. 6 is a perspective view showing an example of the configuration of a conventional induction heating cooker 200.

  As shown in FIG. 6, a conventional induction heating cooker 200 includes a case 201 that surrounds the bottom and the entire circumference of the induction heating cooker 200, a pan placing plate 202 disposed above the case 201, and a case 201. And a plurality of heating coils 203 for induction heating the object to be heated placed on the pan placing plate 202.

  The plurality of heating coils 203 are arranged in a line in the horizontal direction when the induction heating cooker 200 is viewed from the front.

  Conventionally, in this type of induction heating cooker, a plurality of heating coils are arranged in one induction heating area in order to improve usability, and in this induction heating area, depending on the size of the object to be heated. A configuration has also been proposed in which the heating mode by a plurality of heating coils can be switched (see, for example, Patent Document 2).

  FIG. 7 is a plan view showing the configuration of the top plate 302 of the conventional induction heating cooker 300.

  As shown in FIG. 7, the conventional induction heating cooker 300 includes a main body 301, a top plate 302 disposed on the upper surface of the main body 301, and a first induction disposed below the top plate 302. A heating unit 303 and a second induction heating unit 304 are provided.

  The first induction heating unit 303 includes a circular main heating coil 303a and a plurality of elongated sub-heating coils 303b arranged around the main heating coil 303a. The second induction heating unit 304 includes an annular heating coil 304a having an outer shape smaller than the outer diameter size of the first induction heating unit 303 and larger than the outer diameter size of the main heating coil 303a. .

  And the conventional induction heating cooker 300 is a heating mode in which the object to be heated is induction-heated only by the main heating coil 303a according to the size of the object to be heated arranged on the first induction heating unit 303, The main heating coil 303a and one or a plurality of sub-heating coils 303b are energized at the same time, and the heating mode for induction heating of the object to be heated can be selected.

  Furthermore, in another conventional induction heating cooker, in order to improve the usability, a configuration capable of supporting heated objects having various sizes and shapes without increasing the number of induction heating units has been proposed. (For example, refer to Patent Document 3).

  FIG. 8 is a plan view showing another example of the configuration of the top plate 401 of the conventional induction heating cooker 400.

  As shown in FIG. 8, the conventional induction heating cooker 400 includes a top plate 401, two first induction heating units 402 and a second induction heating unit 403 disposed below the top plate 401. ,have.

  Each of the first induction heating units 402 includes two or more heating coils 402a that are adjacent to each other and are driven to be heated independently of each other, and the two or more heating coils 402a cooperate with one object to be heated. Heat. The second induction heating unit 403 includes a circular main heating coil 403a disposed in the center and a plurality of side heating coils 403b formed concentrically outside the main heating coil 403a. ing. The second induction heating unit 403 is a single heating that heats only one object to be heated only by the main heating coil 403a and a joint heating that cooperatively heats one object to be heated by the main heating coil 403a and the side heating coil 403b. It is configured to be possible.

  And in the conventional induction heating cooking appliance 400, it is comprised so that the induction heating by the 1st induction heating part 402 or the 2nd induction heating part 403 can be selected according to the magnitude | size and shape of to-be-heated material. Yes. In the conventional induction heating cooker 400, the first induction heating unit 402 and the second induction heating unit 403 each select single heating or joint heating according to the size and shape of the object to be heated. It is configured to be able to.

  However, the above-described conventional induction heating cooker still has room for improvement from the viewpoint of improving the usability of the induction heating cooker.

  That is, in the above-described conventional induction heating cooker, when a user heats an object to be heated, the user can arbitrarily select from a plurality of induction heating areas according to the size and shape of the object to be heated. It is necessary to select an induction heating area, and then place an object to be heated at a predetermined position in the selected induction heating area and operate the heating coil. A conventional induction heating cooker is configured to be able to induction-heat an object to be heated. In other words, the conventional induction heating cooker is configured so that an object to be heated can be induction heated only at one position predetermined in the induction heating area.

  Thus, the conventional induction heating cooker is comprised so that a to-be-heated object can be induction-heated only in one position previously defined in the induction heating area. For this reason, the position of the object to be heated cannot be moved within the induction heating area. Therefore, for example, while cooking in the object to be heated using an induction heating cooker, preparing other dishes on the induction heating cooker, it is desirable to simultaneously perform multiple cooking in a limited space of the kitchen In this case, the user needs to move the object to be heated from the selected induction heating area to another induction heating area and secure a place for performing another cooking. For this reason, the efficiency of cooking may be poor and usability may be poor.

JP-A-57-109291 JP 2013-206549 A International Publication No. 2012/132275

  This indication is made in view of the subject which the above-mentioned prior art has, and while being able to choose an induction heating area according to a thing to be heated, it can utilize effectively the limited space of a kitchen. It is an object of the present invention to provide an easy-to-use induction heating cooker that can improve cooking efficiency.

  An induction heating cooker of the present disclosure includes a top plate on which an object to be heated is placed, a main body having a top plate, a first induction heating area formed on the top plate and on which the object to be heated is placed, The top plate is formed separately from the first induction heating area, and includes a second induction heating area on which an object to be heated is placed. In addition, at least three first heating coils that are arranged below the first induction heating area and induction-heat the object to be heated placed in the first induction heating area, and the second induction heating area Control which controls the drive of one 2nd heating coil and the 1st heating coil and the 2nd heating coil which are arrange | positioned downward and induction-heat the to-be-heated material mounted in the 2nd induction heating area And a section. The first induction heating area is configured to have a size capable of induction heating the object to be heated at a plurality of positions in the first induction heating area. The second induction heating area is the second induction heating area. The size is such that the object to be heated can be induction-heated at one position. The control unit is configured such that when the object to be heated placed in the second induction heating area is heated by the second heating coil, the object to be heated is placed in the first induction heating area. The driving of the first heating coil and the second heating coil is controlled so as to be equal to or higher than the thermal efficiency when heated by the induction heating coil.

  With such a configuration, at least three first heating coils are disposed below the first induction heating area, and the object to be heated can be induction heated at a plurality of positions in the first induction heating area. It becomes. For this reason, the user can move the position of the object to be heated placed in the first induction heating area in the first induction heating area. For this reason, the user can easily secure a place for performing a plurality of cooking according to cooking in a limited space of the kitchen, so that the efficiency of cooking can be improved, and induction heating cooking The convenience of the vessel can be improved.

  The first induction heating area and the second induction heating area have the same thermal efficiency when the object to be heated placed in the second induction heating area is heated by the second heating coil. Is placed in the first induction heating area and formed so as to have a thermal efficiency equal to or higher than that when heated by the first induction heating coil. Therefore, the user can select an induction heating area having optimum thermal efficiency according to the object to be heated and the cooked food in the object to be heated. For this reason, the efficiency of cooking can be improved and the usability of the induction heating cooker can be improved.

  As described above, according to the induction heating cooker of the present disclosure, the induction heating area can be selected according to the object to be heated, and the limited space of the kitchen can be effectively used. An easy-to-use induction heating cooker that can improve efficiency can be provided.

FIG. 1 is a perspective view illustrating an overall configuration of an induction heating cooker according to the first embodiment of the present disclosure. FIG. 2 is a plan view illustrating a configuration of a top plate of the induction heating cooker according to the first embodiment of the present disclosure. FIG. 3 is a block diagram illustrating a partial cross-sectional configuration and a circuit configuration of the induction heating cooker according to the first embodiment of the present disclosure. FIG. 4 is a circuit diagram illustrating a rectifying / smoothing unit and an inverter circuit unit of the induction heating cooker according to the first embodiment of the present disclosure. FIG. 5 is a plan view illustrating the configuration of the top plate of the induction heating cooker according to the second embodiment of the present disclosure. FIG. 6 is a perspective view showing an example of the configuration of a conventional induction heating cooker. FIG. 7 is a plan view showing a configuration of a top plate of a conventional induction heating cooker. FIG. 8: is a top view which shows another example of a structure of the top plate of the conventional induction heating cooking appliance.

  An induction heating cooker according to a first aspect of the present disclosure includes a top plate on which an object to be heated is placed, a main body having a top plate, a top plate, and the first object on which the object to be heated is placed. The induction heating area is formed separately from the first induction heating area of the top plate, and a second induction heating area on which an object to be heated is placed is provided. The induction heating cooker is disposed below the first induction heating area, and induction-heats an object to be heated placed in the first induction heating area. One second heating coil, a first heating coil, and a second heating coil, which are arranged below the two induction heating areas and induction-heat the object to be heated placed in the second induction heating area And a controller for controlling the driving of the motor. The first induction heating area is configured to have a size capable of induction heating the object to be heated at a plurality of positions in the first induction heating area. The second induction heating area is the second induction heating area. It is comprised in the magnitude | size which can inductively heat a to-be-heated material in one position in a heating area. The control unit is configured such that when the object to be heated placed in the second induction heating area is heated by the second heating coil, the object to be heated is placed in the first induction heating area. The driving of the first heating coil and the second heating coil is controlled so as to be equal to or higher than the thermal efficiency when heated by the induction heating coil.

  With such a configuration, at least three first heating coils are disposed below the first induction heating area, and the object to be heated can be induction heated at a plurality of positions in the first induction heating area. It becomes. For this reason, the user can move the article to be heated placed in the first induction heating area in the first induction heating area. Therefore, the user can easily secure a place for performing a plurality of cooking according to cooking in a limited space of the kitchen. For this reason, the efficiency of cooking can be improved and the usability of the induction heating cooker can be improved.

  In addition, the first induction heating area and the second induction heating area have the same thermal efficiency when the object to be heated placed in the second induction heating area is heated by the second heating coil. The object to be heated is placed in the first induction heating area and is formed so as to have a thermal efficiency equal to or higher than that when heated by the first induction heating coil. Thereby, the user can select the induction heating area which has the optimal thermal efficiency according to a to-be-heated object and the cooking thing in a to-be-heated object. For this reason, the efficiency of cooking can be improved and the usability of the induction heating cooker can be improved.

  Next, according to a second aspect of the present disclosure, in the first aspect, the first heating coil is formed in a circular shape or an elliptical shape, the second heating coil is formed in a circular shape, The one heating coil may be configured such that the diameter or the minor axis of the first heating coil is smaller than the diameter of the second heating coil.

  According to such a configuration, the first induction heating is further performed so that the object to be heated can be induction heated at a plurality of positions in the first induction heating area without increasing the size of the induction heating cooker. An area can be configured.

  Further, according to a third aspect of the present disclosure, in the first aspect or the second aspect, the top plate is formed in a rectangular shape, and the first induction heating area and the second induction heating area are the top plate. The second induction heating area may be arranged along at least one of the left and right sides of the first induction heating area.

  With such a configuration, the first induction heating area or the second induction heating area is arranged near the place where the user prepares for cooking. For this reason, the user can prepare the cooked food at a position close to the place where the cooked food is cooked. Therefore, the cooking efficiency can be further improved, and the usability of the induction heating cooker can be improved.

  Further, the fourth aspect of the present disclosure may be configured such that, in the third aspect, the second induction heating area is disposed on both the left and right sides of the first induction heating area.

  According to such a configuration, the user can further perform various types of cooking, and the usability of the induction cooking device can be further improved.

  Further, according to a fifth aspect of the present disclosure, in the first to fourth aspects, the first induction heating area has a lateral width of the first induction heating area that is greater than a depth width of the first induction heating area. May be formed so as to be larger.

  With such a configuration, the user moves the position of the object to be heated placed in the first induction heating area in the horizontal direction, so that the user can move to a position close to the user in a limited space of the kitchen. A place for cooking can be secured, and the usability of the induction heating cooker can be further improved.

  Moreover, since the 1st induction heating area is formed so that the width of the 1st induction heating area may become larger than the depth width of the 1st heating area, the depth width of an induction heating cooking appliance should be enlarged. In addition, the first induction heating area can be formed, and a compact induction heating cooker having a depth width can be provided.

  Further, according to a sixth aspect of the present disclosure, in the first to fourth aspects, the first induction heating area has a lateral width of the first induction heating area that is greater than a depth width of the first induction heating area. It may be configured to be smaller.

  With such a configuration, by moving the position of the object to be heated placed in the first induction heating area in the vertical direction, cooking is performed at a position close to the user in a limited space of the kitchen. Can be secured, and the usability of the induction heating cooker can be further improved.

  Moreover, since the 1st induction heating area is formed so that the width of the 1st induction heating area may become smaller than the depth width of the 1st induction heating area, the width of the induction heating cooker is enlarged. The first induction heating area can be formed without any problem, and a compact induction heating cooker having a lateral width can be provided.

  Hereinafter, embodiments of the heating cooker of the present disclosure will be described in detail with reference to the drawings. In the following description, the same or corresponding parts may be denoted by the same reference numerals, and redundant description may be omitted.

(First embodiment)
First, 1st Embodiment of the heating cooker of this indication is described using FIGS. 1-4.

  FIG. 1 is a perspective view illustrating an overall configuration of an induction heating cooker 100 according to the first embodiment of the present disclosure. FIG. 2 is a plan view illustrating a configuration of the top plate 2 of the induction heating cooker 100 according to the first embodiment of the present disclosure. Furthermore, FIG. 3 is a block diagram illustrating a partial cross-sectional configuration and a circuit configuration of the induction heating cooker 100 according to the first embodiment of the present disclosure. FIG. 4 is a circuit diagram showing the rectifying / smoothing unit 9 and the inverter circuit unit 10 of the induction heating cooker 100 according to the first embodiment of the present disclosure.

  As shown in FIGS. 1 and 2, induction heating cooker 100 according to the present embodiment is used by being incorporated into a cabinet such as a kitchen, and is inserted into an opening formed in a cabinet such as a kitchen. A main body 1 and a top plate 2 disposed on the upper portion of the main body 1.

  The top plate 2 is made of a glass material having high heat resistance and high electrical insulation, and is preferably made of, for example, crystallized glass. The top plate 2 is formed in a rectangular shape that is long in the lateral direction when viewed from the front so that the lateral width T0 of the top plate 2 is larger than the depth width D0 of the top plate 2.

  In the present embodiment, a configuration will be described in which the top plate 2 is formed in a rectangular shape so that the horizontal width T0 of the top plate 2 is 900 mm and the depth width D0 of the top plate 2 is 360 mm.

  The top plate 2 is formed separately from the first induction heating area 3 on which the object to be heated H such as a pan is placed and the first induction heating area 3. Two second induction heating areas 4 are formed.

  The first induction heating area 3 has a rectangular shape that is long in the lateral direction when viewed from the front so that the lateral width T1 of the first induction heating area 3 is larger than the depth width D1 of the first induction heating area 3. Is formed. Further, the first induction heating area 3 has a substantially central portion (center) of the top surface of the top plate 2 such that the longitudinal direction of the first induction heating area 3 is the same as the longitudinal direction of the top plate 2. Are also included).

  In the second induction heating area 4, the depth width D2 of the second induction heating area 4 and the depth width D1 of the first induction heating area 3 are the same, and the lateral width T2 of the second induction heating area 4 is It is formed in a square shape so that the depth width D2 of the second induction heating area 4 is the same. The second induction heating area 4 is arranged on the left and right sides of the first induction heating area 3, and the first induction heating area 3 and the two second induction heating areas 4 are arranged on the top plate 2. They are arranged in a line along the longitudinal direction.

  In the present embodiment, the first induction heating area 3 is rectangular so that the lateral width T1 of the first induction heating area 3 is 380 mm and the depth width D1 of the first induction heating area 3 is 190 mm. The structure formed in the above will be described. In the present embodiment, the second induction heating area 4 is set so that the lateral width T2 of the second induction heating area 4 is 190 mm and the depth width D2 of the second induction heating area 4 is 190 mm. A configuration formed in a square shape will be described.

  Furthermore, in the present embodiment, the longitudinal center of the top plate 2 existing at a position of 200 mm from the front end of the top plate 2 toward the rear end of the top plate 2 and the first induction heating area 3 A configuration in which the first induction heating area 3 is arranged in the central portion of the top plate 2 will be described so that the center of the top plate 2 is at the same position.

  In the present embodiment, the center of the second induction heating area 4 is located at a position of 200 mm from the front end portion of the top plate 2 toward the rear end portion side of the top plate 2, and the second induction heating area. A configuration in which the second induction heating areas 4 are arranged on the left and right of the first induction heating area 3 so that the distance between the centers of the four is 600 mm will be described.

  Below the first induction heating area 3, a first heating coil 5 that induction-heats the object to be heated H placed in the first induction heating area 3 is arranged in parallel with the longitudinal direction of the top plate 2. And at least three are arranged.

  The first heating coil 5 is formed in a circular shape or an elliptical shape. Further, a plurality of first heating coils 5 are arranged below the first induction heating area 3 so that the object to be heated H can be induction heated at a plurality of positions in the first induction heating area 3. The size of the first heating coil 5 is set according to the size of the first induction heating area 3.

  In the present embodiment, the first heating coil 5 is formed in an elliptical shape so that the minor axis of the first heating coil 5 is 80 mm and the major axis of the first heating coil 5 is 180 mm. Will be described. In the present embodiment, the minor axis direction of the first heating coil 5 is the same as the longitudinal direction of the first induction heating area 3, and the center of the adjacent first heating coil 5 in the major axis direction is the same. A configuration in which the four first heating coils 5 are arranged in a line below the first induction heating area 3 so that the distance between the lines is 95 mm will be described.

  Below the second induction heating area 4, one second heating coil 6 for inductively heating the article H to be heated placed in the second induction heating area 4 is disposed.

  The second heating coil 6 is formed in a circular shape. Further, the second heating coil 6 is disposed below the second induction heating area 4 so that the object to be heated H can be induction heated at one position in the second induction heating area 4. The size of the second heating coil 6 is set according to the size of the second induction heating area 4. In addition, when the 1st heating coil 5 is circular, the 2nd heating coil 6 is used so that the diameter of the 2nd heating coil 6 may become larger than the diameter of the 1st heating coil 5, and When the 1st heating coil 5 is elliptical, it is preferable that the diameter of the 2nd heating coil 6 is formed so that it may become larger than the short diameter of the 1st heating coil 5. FIG. However, the correlation of the shape and the diameter of the first heating coil 5 and the second heating coil 5 of the present disclosure is not limited to this example.

  In the present embodiment, the second heating coil 6 is formed in a circular shape having a diameter larger than the short diameter of the first heating coil 5 and having a diameter equal to or smaller than the long diameter of the first heating coil 5. It is assumed that Moreover, the 2nd heating coil 6 shall be the structure formed in the circular shape whose diameter is 170 mm.

  On the user side (front side) of the upper surface of the top plate 2, an operation unit 7 for setting the operating conditions of the first induction heating area 3 and the second induction heating area 4 is arranged.

  As shown in FIGS. 3 and 4, the main body 1 is connected to a commercial power source 8 inside the main body 1, and a rectifying and smoothing unit 9 that converts an AC voltage supplied from the commercial power source 8 into a DC voltage, and a rectifying and smoothing unit. An inverter circuit unit 10 that is connected to the unit 9 and generates a high-frequency current from the DC voltage output from the rectifying and smoothing unit 9 is disposed. An input current detection unit 11 for detecting an input current supplied from the commercial power supply 8 to the rectifying / smoothing unit 9 is provided between the commercial power supply 8 and the rectifying / smoothing unit 9. The rectifying / smoothing unit 9, the inverter circuit unit 10, and the input current detection unit 11 are arranged corresponding to the first heating coil 5 and the second heating coil 6, respectively. The high frequency currents generated by the inverter circuit unit 10 of the first heating coil 5 and the second heating coil 6 are supplied to the first heating coil 5 and the second heating coil 6, respectively.

  The rectifying / smoothing unit 9 includes a full-wave rectifier 9a composed of a bridge diode and a low-pass filter connected between the output terminals of the full-wave rectifier 9a and composed of a choke coil 9b and a smoothing capacitor 9c. Yes.

  The inverter circuit unit 10 includes a switching element 10a such as an IGBT (Insulated Gate Bipolar Transistor), a diode 10b connected in antiparallel to the switching element 10a, and a resonant capacitor 10c connected in parallel to the heating coil. Yes. The inverter circuit unit 10 generates a high-frequency current by turning on / off the switching element 10a of the inverter circuit unit 10, and the inverter circuit unit 10 and each heating coil form a high-frequency inverter.

  The main body 1 is connected to the inverter circuit unit 10, and the on / off control of the switching element 10 a of the inverter circuit unit 10 controls the high-frequency current supplied from the inverter circuit unit 10 to each heating coil. A control unit 12 is disposed. The control unit 12 controls the driving of the first heating coil 5 and the second heating coil 6 to perform induction heating of the object H to be heated in the first induction heating area 3 and the second induction heating area 4. Control.

  The control unit 12 controls the operation of each induction heating area based on the signal transmitted from the operation unit 7. The operation unit 7 is provided with a display unit (not shown) for displaying the operation conditions and the like of each induction heating area. The display unit is configured to display each induction heating area based on a signal transmitted from the control unit 12. Informs the user of information such as the operation status of the area.

  Between the control unit 12 and the inverter circuit unit 10, a resonance voltage detection unit 13 that detects the resonance voltage of the inverter circuit unit 10 is arranged. Also, between the input current detection unit 11 and the resonance voltage detection unit 13, whether the object to be heated H is placed in each induction heating area based on the detection values of the input current detection unit 11 and the resonance voltage detection unit 13. The to-be-heated object detection part 14 which determines whether it is NO is arrange | positioned.

  The impedance of each heating coil changes depending on the presence / absence of the object to be heated H placed above each heating coil and the size of the object to be heated H. Further, as the impedance of each heating coil changes, the amount of current flowing through the inverter circuit unit 10 also changes, and the resonance voltage also changes.

  Therefore, in the present embodiment, the control unit 12 is configured to turn on the switching element 10a so that the value of the current detected by the input current detection unit 11 (hereinafter referred to as “detection current”) becomes a predetermined value. Is controlling. When the ON time of the switching element 10a increases, the current flowing through each heating coil increases, and the resonance voltage between each heating coil and the resonance capacitor 10c increases. The heated object detection unit 14 compares the value obtained by supplying the detection current to each heating coil with a threshold value, and determines whether or not the heated object H is placed above each heating coil. In addition, when it is determined that the object to be heated H is arranged above each heating coil, a detection signal indicating that the object to be heated H is placed is output to the control unit 12. ing.

  About the induction heating cooking appliance 100 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the user places the object H to be heated in the first induction heating area 3 and starts heating in the first induction heating area 3 (instructing the operation unit 7 to perform heating), the first induction is performed. A detection current that is a weak current is supplied to all of the first heating coils 5 arranged below the heating area 3. Whether the object to be heated H is placed on each of the plurality of first heating coils 5 based on the changes obtained by the input current detector 11 and the resonance voltage detector 13. And a detection signal is output to the control unit 12.

  When the control unit 12 determines that the object to be heated H is above any one of the plurality of first heating coils 5 based on the detection signal from the object to be heated detection unit 14, the control unit 12 is below the object to be heated H. A high frequency current is supplied to the first heating coil 5 located. When a high-frequency current is supplied to the first heating coil 5, a high-frequency magnetic field is generated in the first heating coil 5, and the eddy current caused by the high-frequency magnetic field causes a target placed above the first heating coil 5. The heated object H generates heat.

  When the user places the object H to be heated in the second induction heating area 4 and starts heating in the second induction heating area 4 (instructing the operation unit 7 to perform heating), the first described above. Similarly to the induction heating area 3, a high-frequency current is supplied to the second heating coil 6 located below the object H to be heated, and a high-frequency magnetic field is generated in the second heating coil 6. Due to the eddy current caused by the above, the object to be heated H placed above the second heating coil 6 generates heat.

  In the present embodiment, the maximum rated power consumption in each induction heating area is set to 3000 W in both the first induction heating area 3 and the second induction heating area 4.

  Moreover, when the to-be-heated object H is mounted ranging over the 1st induction heating area 3 and the 2nd induction heating area 4, the induction-heating cooker 100 of this Embodiment is the to-be-heated object H. It is configured so that induction heating is not possible. In addition, the induction heating cooker 100 is configured so that the object to be heated placed in each induction heating area is placed only when the object to be heated H is placed in the first induction heating area 3 or the second induction heating area 4. It is comprised so that the heating thing H can be induction-heated.

  In the first induction heating area 3, the induction heating cooker 100 is configured so that one object to be heated H placed on the top plate 2 is induction heated by the plurality of first heating coils 5. ing. The induction heating cooker 100 is configured so that the number of the first heating coils 5 to be operated can be switched according to the object to be heated H placed in the first induction heating area 3. Yes.

  For example, in the present embodiment, the object to be heated H is placed over the two first heating coils 5 arranged on the right side of the four first heating coils 5, and the heating operation is performed. In the case where the power consumption is performed, the total power consumption of the two first heating coils 5 is controlled to be 3000 W which is the maximum rated power consumption. Moreover, the to-be-heated material H is mounted ranging over the two 1st heating coils 5 arrange | positioned on the left side or the two 1st heating coils 5 arrange | positioned in the center, and heating operation is carried out. Similarly, the total power consumption of these two first heating coils 5 is controlled to be 3000 W which is the maximum rated power consumption.

  Furthermore, when the object to be heated H is placed over all of the four first heating coils 5 and a heating operation is performed, the total power consumption of all the first heating coils 5 is the maximum. Control is performed so that the rated power consumption is 3000 W. Moreover, when the to-be-heated material H is mounted only on the one 1st heating coil 5 among the four 1st heating coils 5, and heating operation is made, one 1st heating coil 5 is carried out. Is controlled to be 3000 W which is the maximum rated power consumption.

  Furthermore, among the four first heating coils 5, when the object to be heated H is placed over the three first heating coils 5 from the right side or the three first heating coils 5 from the left side, and a heating operation is performed, The total power consumption of the three first heating coils 5 is controlled to be 3000 W which is the maximum rated power consumption.

  Thus, in the present embodiment, the number of the first heating coils 5 that the control unit 12 operates according to the size of the object H to be heated placed in the first induction heating area 3. The power consumption of the first induction heating area 3 is controlled to be the maximum rated power consumption regardless of the number of the first heating coils 5 used.

  Thereby, for example, when the size of the object to be heated H in the present embodiment is 20 cm, the user can move the object to be heated H to the three left side, right side, and center in the first induction heating area 3. It can select from a position and can place the to-be-heated material H in the selected position, and can heat it. For this reason, the user can select the arbitrary place in the 1st induction heating area 3 according to cooking, and can heat the to-be-heated material H. FIG. Therefore, since the space on the top surface of the top plate 2 of the induction heating cooker 100 incorporated in a cabinet such as a kitchen can be effectively used in a limited space such as a kitchen, the efficiency of cooking is improved. In addition, the usability of the induction heating cooker 100 can be improved.

  Here, as described above, in the present embodiment, the induction heating cooker 100 has the object to be heated H placed across the first induction heating area 3 and the second induction heating area 4. Is configured such that induction heating of the object to be heated H is not possible. That is, in the present embodiment, the induction heating cooker 100 can be used for each induction heating area only when the object to be heated H is placed in the first induction heating area 3 or the second induction heating area 4. It is comprised so that the to-be-heated material H mounted in can be induction-heated.

  For this reason, the induction heating magnetic field can be efficiently supplied from the heating coil in each induction heating area to the object to be heated H placed in each induction heating area.

  When the object to be heated H is directly above the heating coil, the object to be heated H receives an induction heating magnetic field from the heating coil as compared with the case where the object to be heated H is located at a position shifted from immediately above the heating coil. Cheap. Further, when the shape of the heating coil is the same shape as the object to be heated H, the area of the object to be heated H that receives the induction heating magnetic field is equivalent to the area of the heating coil that supplies the magnetic field. Therefore, compared to the case where the shape of the heating coil is different from the shape of the heated object H, the entire heated object H can be efficiently heated.

  In general, the shape of the heating coil is often circular. This is because many pans and pans that are the objects to be heated H are circular. On the other hand, for example, when a rectangular object to be heated is placed above a circular heating coil and this object H is induction-heated, a portion that is not located above the heating coil (for example, a rectangular object to be heated). The induction heating magnetic field is not supplied to the four corners of the heated object H, and the heating efficiency for the entire heated object H is reduced. Similarly, when the object to be heated H is placed across the first induction heating area 3 and the second induction heating area 4, the portion without the heating coil (for example, the first induction heating area 3 between the second induction heating area 4 and the second induction heating area 4 and the like are present below the heated object H, and therefore the heated object H cannot be efficiently heated. For this reason, in this Embodiment, when the to-be-heated material H is mounted ranging over the 1st induction heating area 3 and the 2nd induction heating area 4, it is made impossible to heat.

  Further, in the present embodiment, in the first induction heating area 3 and the second induction heating area 4, the object H to be heated placed in the second induction heating area 4 is heated by the second heating coil 6. The heat efficiency at the time of being formed is set to be equal to or higher than the heat efficiency when the same object to be heated H is placed in the first induction heating area 3 and heated by the first heating coil 5. That is, the control unit 12 controls the induction heating of the first heating coil 5 and the second heating coil 6 so as to satisfy the thermal efficiency relationship as described above.

  Hereinafter, the thermal efficiency of the first induction heating area 3 and the thermal efficiency of the second induction heating area 4 will be described in detail.

  Whether the object H to be heated is efficiently induction-heated by the heating coil can be determined by calculating the thermal efficiency of each induction heating area.

  The specific heat of the object to be heated is Hc, the weight of the object to be heated is Hw, the specific heat of water is Mc, the weight of the water charged into the object to be heated H is Mw, and the measured value of the temperature change of the water is Pw. Assuming that the integrated power of the heating coil is W, the thermal efficiency of each induction heating area is expressed by Equation 1 shown below.

Thermal efficiency = {(Hc × Hw + Mc × Hc) × Mw} / W (Formula 1)
Here, a horo pan having a diameter of 20 cm and a weight of 1560 g is used as an object to be heated, and 1500 g of water is placed in the horo pan and placed in the first induction heating area 3. When induction heating is performed using the two first heating coils 5 in the induction heating area 3, the thermal efficiency of the first induction heating area 3 is {(0.13 (cal / g · ° C.) × 1560 (g ) +1 (cal / g · ° C.) × 1500 (g)) × 54.5 ° C.} / (860 × 120 (Wh)) = 90%.

  On the other hand, a horo pan having a diameter of 20 cm and a weight of 1560 g is used as an object to be heated, and 1500 g of water is placed in the horo pan and placed in the second induction heating area 4, and the second induction When induction heating is performed using the second heating coil 6 in the heating area 4, the thermal efficiency of the second induction heating area 4 is {(0.13 (cal / g · ° C.) × 1560 (g) +1 ( cal / g · ° C.) × 1500 (g)) × 56 ° C.} / (860 × 120 (Wh)) = 92%.

  As described above, when the object to be heated H is heated in the first induction heating area 3 and when the object to be heated H is heated in the second induction heating area 4, the measured value Pw of the temperature change of the water is In contrast, the measured value Pw when the heated object H is heated in the second induction heating area 4 is larger than the measured value Pw when the heated object H is heated in the first induction heating area 3. This is because, when the object to be heated H is heated using the two first heating coils 5 arranged in the first induction heating area 3, one second arranged in the second induction heating area 4. Compared to the case where the object to be heated H is heated using the heating coil 6, there is a portion where the heating coil is not located below the object to be heated H and the induction heating magnetic field is not sufficiently supplied to the object to be heated H. This is because there are many. For this reason, when the object to be heated H is heated using the two first heating coils 5 arranged in the first induction heating area 3, one second arranged in the second induction heating area 4. Compared to the case where the object to be heated H is heated using the heating coil 6, the heating efficiency for the entire object to be heated H is lowered.

  Thus, in this Embodiment, the to-be-heated object H mounted in the 2nd induction heating area 4 is formed by forming the 1st induction heating area 3 by the at least 3 1st heating coil 5. The thermal efficiency when heated by the second heating coil 6 is equal to or higher than the thermal efficiency when the same object to be heated H is placed in the first induction heating area 3 and heated by the first heating coil 5. Can be configured. For this reason, a user cooks quickly and efficiently, for example using the 2nd induction heating area 4 with high heat efficiency first. Thereafter, the user moves the object H to be heated above the two first heating coils 5 in the first induction heating area 3 to perform the remaining heating, and in the second induction heating area 4, The to-be-heated material H can be mounted and the next cooking can be performed. Thus, the first induction heating area 3 and the second induction heating area 4 can be used properly according to the cooking situation, and the cooking efficiency can be improved. Thus, the usability of the induction heating cooker 100 can be improved.

  Moreover, according to the induction heating cooking appliance 100 of this Embodiment, since the to-be-heated objects H in which cooking is performed are near, replacement | exchange and movement of the to-be-heated object H can be performed easily, and use The person can easily confirm the cooking status of the food in each heated object H. In addition, since the first induction heating area 3 and the second induction heating area 4 are provided separately from each other, for example, the heated object H is a pot having a large handle or a pot having a large diameter. Then, it is assumed that the object to be heated H is cooked in each of the first induction heating area 3 and the second induction heating area 4. In this case, the pan can be moved from the position where the handles or pans contact each other onto the first heating coil 5 immediately below the first induction heating area 3 where the heated objects H do not contact each other. it can. Thus, according to the to-be-heated material H to be used, a cooking position can be changed flexibly.

  Further, the heated object H cooked in the second induction heating area 4 is continuously heated using two first heating coils 5 on the right side or two on the left side of the first induction heating area 3. Heated in the first induction heating area 3 by performing another cooking in the second induction heating area 4 located on the opposite side of the first heating coil 5 being used A space can be provided between the object H and the object H to be heated in the second induction heating area 4. A dish or the like is placed in this space and cooked from the heated object H heated in the first induction heating area 3 and the heated object H heated in the second induction heating area 4, respectively. You can take things and put them on a plate. For this reason, the efficiency of cooking can be improved and the usability of the induction heating cooker 100 can be improved.

  In addition, in the space formed between the object to be heated H heated in the first induction heating area 3 and the object to be heated H heated in the second induction heating area 4, the ingredients before cooking are present. The container in which the container is placed is placed, and the food in the container is placed in the heated object H heated in the first induction heating area 3 and the heated object H heated in the second induction heating area 4, respectively. Can be added, and the usability of the induction heating cooker 100 can be further improved.

  Moreover, in this Embodiment, since the 2nd induction heating area 4 is each arrange | positioned on the right and left of the 1st induction heating area 3, the position of the 2nd induction heating area 4 is a sink of a kitchen, and It is close to the place where the cutting board is placed to prepare the material (usually the side of the induction heating cooker 100). Therefore, when cooking using the 2nd induction heating area 4 for the first time, the distance until it puts a food into the to-be-heated material H becomes close, and it can improve the efficiency of cooking, and induction heating is carried out. Usability of the cooking device 100 can be further improved.

(Second Embodiment)
Next, 2nd Embodiment of the heating cooker of this indication is described using FIG. Note that the same or corresponding components as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  FIG. 5 is a plan view illustrating a configuration of the top plate 2 of the induction heating cooker 100 according to the second embodiment of the present disclosure.

  As shown in FIG. 5, in the present embodiment, in the first induction heating area 3, the lateral width T <b> 1 of the first induction heating area 3 is smaller than the depth width D <b> 1 of the first induction heating area 3. Thus, the top plate 2 is formed in a rectangular shape that is long in the short direction.

  In the present embodiment, the first induction heating area 3 is rectangular so that the lateral width T1 of the first induction heating area 3 is 190 mm and the depth width D1 of the first induction heating area 3 is 280 mm. The structure formed in the above will be described. In the present embodiment, the longitudinal center of the top plate 2 at the position of 200 mm from the front end of the top plate 2 toward the rear end of the top plate 2 and the center of the first induction heating area 3 A configuration in which the first induction heating area 3 is arranged at the center of the top plate 2 will be described so that the two are located at the same position.

  Below the first induction heating area 3, a circular first heating coil 5 that induction-heats the object H to be heated placed in the first induction heating area 3 is a short direction of the top plate 2. Are arranged in parallel with each other.

  In the present embodiment, the first heating coils 5 are arranged in a plurality of rows in the lateral direction and the longitudinal direction of the first induction heating area 3. In the present embodiment, the diameter of the first heating coil 5 is 80 mm, the first heating coil 5 has two rows in the short direction of the first induction heating area 3, and the first induction heating area. A configuration in which a total of six rows are arranged in three rows in three longitudinal directions will be described. Moreover, the 1st heating coil 5 is arrange | positioned so that the space | interval between the centers of each 1st heating coil 5 may be set to 95 mm.

  About the induction heating cooking appliance 100 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  Similarly to the first embodiment described above, also in this embodiment, the maximum rated power consumption in each induction heating area is set to 3000 W in both the first induction heating area 3 and the second induction heating area 4. ing. Further, in the first induction heating area 3, one heated object H placed on the top plate 2 is configured to be induction heated by the plurality of first heating coils 5 and controlled. The part 12 is configured so that the number of the first heating coils 5 to be operated can be switched according to the presence / absence and size of the object H to be heated placed in the first induction heating area 3. Yes.

  That is, in the present embodiment, of the six first heating coils 5 arranged below the first induction heating area 3, the front side of the first induction heating area 3, that is, the operation unit 7 side. When one heated object H is placed over the four arranged first heating coils 5 and the user starts the heating operation, the four first arranged on the operation unit 7 side. The total power consumption of the heating coil 5 is controlled to be 3000 W which is the maximum rated power consumption. Similarly, out of the six first heating coils 5 arranged below the first induction heating area 3, on the back side of the first induction heating area 3, that is, on the side opposite to the operation unit 7. Even when one object to be heated H is placed over the four arranged first heating coils 5 and the user starts the heating operation, the four objects arranged on the side opposite to the operation unit 7 are also provided. The total power consumption of the first heating coil 5 is controlled to be 3000 W, which is the maximum rated power consumption.

  Further, when one heated object H is placed over all the six first heating coils 5 arranged below the first induction heating area 3 and the user starts a heating operation. Is controlled so that the total power consumption of the six first heating coils 5 is 3000 W, which is the maximum rated power consumption. Of the six first heating coils 5 arranged below the first induction heating area 3, above the two first heating coils 5 arranged on the near side of the first induction heating area 3. When one heated object H is placed over the range and the user starts the heating operation, the total power consumption of the two first heating coils 5 arranged on the operation unit 7 side is the maximum rated power consumption. It is controlled to be 3000 W.

  Further, similarly, one object to be heated H extends over the two first heating coils 5 arranged at the center of the first induction heating area 3 or the back side of the first induction heating area 3. When the user starts the heating operation, the total power consumption of the two first heating coils 5 is controlled to be 3000 W which is the maximum rated power consumption.

  Thus, in the induction heating cooker 100 of this Embodiment, according to the magnitude | size of the to-be-heated material H mounted in the 1st induction heating area 3, it is the 1st heating coil 5 operated. The number is switched, and the power consumption of the first induction heating area 3 is controlled to be the maximum rated power consumption regardless of the number of the first heating coils 5 used.

  Thereby, when the size of the object to be heated H is 20 cm, the user selects the object to be heated H from the two positions on the near side and the far side in the first induction heating area 3, and at the selected position. Since the object to be heated H can be placed and heated, the user can select an arbitrary place in the first induction heating area 3 according to cooking and heat the object to be heated H. Therefore, in the first induction heating area 3, the user can move the object to be heated H in the front-rear direction (short direction) of the first induction heating area 3.

  For this reason, in the limited space of a kitchen etc., the space of the upper surface of the top plate 2 of the induction heating cooking appliance 100 incorporated in cabinets, such as a kitchen, can be utilized effectively. Therefore, while being able to improve the efficiency of cooking, the usability of the induction heating cooking appliance 100 can be improved.

  Here, a horo pan having a diameter of 20 cm and a weight of 1560 g is used as an object to be heated, and 1500 g of water is placed in the horo pan and placed in the first induction heating area 3. A case is assumed where induction heating is performed using the four first heating coils 5 in the induction heating area 3. In this case, according to the above-described formula 1, the thermal efficiency of the first induction heating area 3 is {(0.13 (cal / g · ° C.) × 1560 (g) +1 (cal / g · ° C.) × 1500 (g) ) × 54 ° C.} / (860 × 120 (Wh)) = 89%.

  On the other hand, as calculated in the first embodiment described above, a horo pan having a diameter of 20 cm and a weight of 1560 g is used, and 1500 g of water is put into the horo pan in the second induction heating area 4. When the induction heating is performed using the second heating coil 6 of the second induction heating area 4, the thermal efficiency of the second induction heating area 4 is 92%. In addition, as calculated in the first embodiment described above, a horo pan having a diameter of 20 cm and a weight of 1560 g is used, and the horo pan is charged with 1500 g of water in the first induction heating area 3. The thermal efficiency of the first induction heating area 3 is 90% when the induction heating is performed using the two elliptical first heating coils 5 of the first induction heating area 3.

  As described above, in the present embodiment, the heated object H is heated using the four circular first heating coils 5 and the heated object H is heated using the second heating coil 6. The measured value Pw of the temperature change of water differs from the case. Specifically, when the object to be heated H is heated by using the second heating coil 6, water is heated more than when the object to be heated H is heated by using the four circular first heating coils 5. The measured value Pw of the temperature change becomes larger.

  In addition, when the object to be heated H is heated using the four circular first heating coils 5, and the two elliptical first heating coils 5 shown in the first embodiment are used. The measured value Pw of the temperature change of water differs from the case where the heated object H is heated. Specifically, the heated object H is heated using the four first heating coils 5 that are circular in the case where the heated object H is heated using the two first elliptical heating coils 5. The measured value Pw of the temperature change of the water becomes larger than the case where

  This is because, when the object to be heated H is heated using the four circular first heating coils 5, the two first heating coils 5 and the second heating coil 6 that are elliptical are used. This is because, compared with the case where the heated object H is heated, the heating coil is not located below the heated object H, and there are many places where the induction heating magnetic field is not sufficiently supplied to the heated object H. Therefore, when the object to be heated H is heated using the four circular first heating coils 5, the two elliptical first heating coils 5 and the second heating coil 6 are used. Compared with the case where the heated object H is heated, the heating efficiency with respect to the whole to-be-heated object H falls.

  Thus, in the present embodiment, the first induction heating area 3 is formed by at least three (at least three in the short direction) first heating coils 5, and the second induction heating area 4 is formed. When the heated object H placed on the second heating coil 6 is heated by the second heating coil 6, the same heated object H is placed in the first induction heating area 3. It is comprised so that it may become more than the thermal efficiency at the time of heating. For this reason, for example, the user first cooks quickly and efficiently using the second induction heating area 4 having high thermal efficiency, and then 4 (on the near side or the back side) of the first induction heating area 3. The heated object H is moved above the first heating coil 5 to perform the remaining heating, and another heated object H is placed in the second induction heating area 4 for the next cooking. Can be done. That is, the user can selectively use the first induction heating area 3 and the second induction heating area 4 according to the cooking situation, and can improve the cooking efficiency. For this reason, the usability of the induction heating cooker 100 can be improved.

  Moreover, since the to-be-heated objects H in which cooking is performed exist near, while being able to perform the replacement | exchange and movement of the to-be-heated object H, a user can cook in each to-be-heated object H You can easily check the cooking status of the food. Further, for example, when the object to be heated H is a pan having a large handle or a pot having a large diameter, when the object to be heated H is cooked, at the position where the objects to be heated H do not contact each other, the first The pan can be moved onto the first heating coil 5 immediately below the induction heating area 3, and the cooking position can be flexibly changed in accordance with the heated object H to be used.

  Moreover, the to-be-heated material H which cooked in the 2nd induction heating area 4 is continuously heated using the four 1st heating coils 5 arrange | positioned in the back | inner side of the 1st induction heating area 3, When another cooking is performed in the second induction heating area 4, a space for performing another cooking can be provided on the front side of the first induction heating area 3. When a dish or the like is placed in this space, cooking is performed from the heated object H heated in the first induction heating area 3 and the heated object H heated in the second induction heating area 4, respectively. Since an object can be taken and placed on a plate, the cooking efficiency can be improved, and the usability of the induction heating cooker 100 can be improved. Moreover, the container into which the foodstuff before cooking was placed in the space formed in the near side of the 1st induction heating area 3, the to-be-heated object H currently heated by the 1st induction heating area 3, and Ingredients in the container can also be put into the heated object H heated in the second induction heating area 4, respectively, and the usability of the induction heating cooker 100 can be further improved.

  As mentioned above, although 1st Embodiment and 2nd Embodiment of the induction heating cooking appliance of this indication were described, the induction heating cooking appliance of this indication is the 1st Embodiment and 2nd implementation mentioned above. It is not limited to the form.

  For example, in the first embodiment and the second embodiment described above, the method for detecting the object to be heated by the resonance voltage has been described. However, the method for detecting the object to be heated H is not limited to this. For example, it is possible to use a method capable of detecting the object to be heated placed in the first induction heating area and the second induction heating area, such as detecting the current flowing through each heating coil and detecting the object to be heated. .

  In the above-described embodiment, an example in which the second induction heating area 4 is provided on both the left and right sides of the first induction heating area 3 has been described. However, the present disclosure is not limited to this example. A configuration in which one second induction heating area 4 is provided adjacent to the first induction heating area 3 may be adopted.

  In the first embodiment, the first induction heating area 3 has a rectangular shape that is long in the longitudinal direction of the top plate 2, a plurality of circular or elliptical first heating coils 5, and the longitudinal length of the top plate 2. An example arranged in parallel in the direction is shown. In the second embodiment, the first induction heating area 3 has a rectangular shape that is long in the short direction of the top plate 2, a plurality of circular first heating coils 5, and the longitudinal direction of the top plate 2. In addition, an example is shown that is arranged in parallel in the lateral direction. However, the induction heating cooker of this indication is not limited to these examples.

  For example, in the first embodiment, a plurality of circular first heating coils 5 may be arranged in parallel in the longitudinal direction and the short direction of the top plate 2, or the second In the embodiment, a configuration may be employed in which a plurality of circular or elliptical first heating coils 5 are arranged in parallel in the lateral direction of the top plate 2.

  Further, in the embodiment, an example in which the top plate 2 is configured in a rectangular shape is shown, but the present disclosure is not limited to this example. For example, the top plate 2 may have a shape other than a rectangle, such as a square shape.

  As described above, according to the induction heating cooker of the present disclosure, the induction heating area can be selected according to the object to be heated, and the limited space of the kitchen can be effectively used. It becomes possible to provide an easy-to-use induction heating cooker that can improve efficiency. Therefore, the present disclosure can be suitably applied to the field / use of induction heating cookers for home use and business use, and is useful.

DESCRIPTION OF SYMBOLS 1 Main body 2 Top plate 3 1st induction heating area 4 2nd induction heating area 5 1st heating coil 6 2nd heating coil 7 Operation part 8 Commercial power supply 9 Rectification smoothing part 9a Full wave rectifier 9b Choke coil 9c Smoothing Capacitor 10 Inverter circuit part 10a Switching element 10b Diode 10c Resonant capacitor 11 Input current detection part 12 Control part 13 Resonance voltage detection part 14 Heated object detection part 100 Induction heating cooker H Heated object

Claims (6)

A top plate on which an object to be heated is placed;
A body having the top plate;
A first induction heating area formed on the top plate and on which the object to be heated is placed;
A second induction heating area formed separately from the first induction heating area of the top plate and on which the object to be heated is placed;
At least three first heating coils, which are arranged below the first induction heating area and induction-heat the object to be heated placed in the first induction heating area;
One second heating coil that is arranged below the second induction heating area and that induction-heats the object to be heated placed in the second induction heating area;
A control unit for controlling driving of the first heating coil and the second heating coil;
With
The first induction heating area is configured to have a size capable of induction heating the object to be heated at a plurality of positions in the first induction heating area.
The second induction heating area is configured to have a size capable of induction heating the object to be heated at one position in the second induction heating area.
The control unit has a thermal efficiency when the object to be heated placed in the second induction heating area is heated by the second heating coil, so that the object to be heated is placed in the first induction heating area. And configured to control the driving of the first heating coil and the second heating coil so as to be more than thermal efficiency when heated by the first induction heating coil,
Induction heating cooker. The first heating coil is formed in a circular or elliptical shape,
The second heating coil is formed in a circular shape,
The first heating coil is formed such that a diameter or a short diameter of the first heating coil is smaller than a diameter of the second heating coil.
The induction heating cooker according to claim 1. The top plate is formed in a rectangular shape,
The first induction heating area and the second induction heating area are disposed along a longitudinal direction of the top plate,
The second induction heating area is disposed on at least one of the left and right sides of the first induction heating area.
The induction heating cooker according to claim 1 or 2. The second induction heating area is disposed on both the left and right sides of the first induction heating area.
The induction heating cooker according to claim 3. The first induction heating area is formed such that a lateral width of the first induction heating area is larger than a depth width of the first induction heating area.
The induction heating cooking appliance according to any one of claims 1 to 4. The first induction heating area is formed such that a lateral width of the first induction heating area is smaller than a depth width of the first induction heating area.
The induction heating cooking appliance according to any one of claims 1 to 4.

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