CN214760531U - Heating cooker - Google Patents

Abstract

The utility model provides a heating cooking device, which can prevent the large-scale of the device accompanied by respectively configuring a plurality of ferrite cores for a plurality of coils. A heating cooker (10) is provided with: a bottomed cylindrical housing section (25); a plurality of coils (29) which are arranged on the outer surface side of the accommodating part (25) with intervals in the circumferential direction around the axis (B) of the accommodating part (25) and which inductively heat the pot (15); a first ferrite core (30A) which is disposed separately from the coil (29); and a second ferrite core (30B) disposed so as to straddle two coils (29) adjacent in the circumferential direction of the housing section (25).

Description

Heating cooker

Technical Field

The utility model relates to a heating cooker.

Background

Patent document 1 discloses a heating cooker in which a plurality of coils are arranged in a bottomed cylindrical housing portion for housing a pot with an interval in the circumferential direction of the housing portion. In this heating cooker, the energization state is switched in a predetermined order so that one of the plurality of coils is energized and the remaining coils are de-energized, and the pan is inductively heated by the coils.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2018-61573

SUMMERY OF THE UTILITY MODEL

Problem to be solved by the utility model

In the induction heating type heating cooker, it is effective to dispose a plurality of ferrite cores for each coil in order to concentrate magnetic flux generated by energization of the coil and suppress leakage of magnetic flux to the outside of the device. However, if a plurality of ferrite cores are arranged for the coil, an arrangement space for each ferrite core is required, and therefore the apparatus becomes large. In patent document 1, no consideration is given to the countermeasure for the increase in size of the device associated with the arrangement of the plurality of ferrite cores.

The utility model provides a heating cooker, can prevent to dispose the upsizing of equipment that a plurality of ferrite cores accompany respectively in a plurality of coils.

Means for solving the problems

One aspect of the present invention provides a heating cooker including: a bottomed cylindrical containing part for containing the pot; a plurality of coils arranged in a circumferential direction around an axis of the accommodating portion on an outer surface side of the accommodating portion, and configured to inductively heat the pot; a first ferrite core separately disposed from the coil; and a second ferrite core disposed so as to straddle two of the coils adjacent in the circumferential direction of the housing portion.

In the above aspect, since the second ferrite core is disposed across adjacent coils, one second ferrite core can be shared by two coils. Therefore, the contrary object of securing the number of ferrite cores arranged for each coil and reducing the total number of ferrite cores arranged for all coils can be achieved. By securing the number of ferrite cores arranged in the coil, both concentration of magnetic flux generated by energization of the coil and suppression of leakage of magnetic flux to the outside of the device can be achieved. The reduction of the total number of the ferrite cores, specifically, the number of the second ferrite cores can reduce the space for arranging the second ferrite cores, and thus can prevent the size of the apparatus from increasing.

Effect of the utility model

The present invention can prevent the enlargement of the equipment associated with the arrangement of a plurality of ferrite cores for a plurality of coils.

Drawings

Fig. 1 is a perspective view of a heating cooker according to an embodiment of the present invention.

Fig. 2 is a sectional view of the heating cooker.

Fig. 3 is an exploded perspective view of the heating cooker.

Fig. 4 is an exploded perspective view of the bezel, the coil, and the ferrite core.

Fig. 5 is an exploded perspective view of the protection frame with the coil and the ferrite holder with the ferrite core.

Fig. 6 is a bottom view of the bezel and the coil.

Fig. 7 is a bottom view of the bezel, the coil, and the ferrite core.

Fig. 8 is a bottom view of the protective frame, the coil, the ferrite core, and the ferrite holder.

Fig. 9 is a lower perspective view showing the ferrite core and the ferrite holder.

Fig. 10 is an upper perspective view showing the ferrite core and the ferrite holder.

Description of the symbols

10 heating cooker

15 pot

15a bottom

15b curved part

15c outer peripheral portion

15d first part

15e second part

20 cooker body

21 outer package body

22 shoulder body

23 hinge connection

25 housing part

26 inner barrel

27 protective frame

27a outer surface

27b bottom

27c bend

27d outer periphery

27e penetration part

27f partition wall

27g, 27h positioning part

28 accommodating space

29 coil

29a small diameter part

29b large diameter part

Side part of 29c

30 ferrite core

30A first ferrite core

30A1 first part

30A2 second part

30B second ferrite core

31 ferrite holder (holder)

31a threaded hole portion

31b connecting part

31c screw fastening part

32 center part

33 first holding portion

33a first part

33b second part

33c side plate part

33d connecting part

33e, 33f retaining part

33g elastic sheet

34 frame part

35 second holding part

35a outer peripheral wall

35b locking claw

35c connecting part

35d elastic piece

36 reflective plate

37 terminal cover

40 cover body

41 outer package body

42 inner cover

43 sealing member

45 power supply substrate

46 IH substrate

47A, 47B substrate holder

48 flexible wire reel

49 temperature sensor

Axis of A pan

Axis of the B accommodating part

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Fig. 1 and 2 show a heating cooker 10 according to an embodiment of the present invention. The heating cooker 10 includes a rice cooker for cooking rice and a cooking device for cooking food. As shown in fig. 1 and 2, the heating cooker 10 includes: a bottomed cylindrical pan 15; a cooker body 20 in which the pan 15 is detachably disposed; and a lid 40 rotatably attached to the cooker body 20.

The pan 15 is made of a magnetic material and is inductively heated by a coil 29 disposed in the cooker body 20. The pan 15 includes: a rounded bottom 15 a; a curved portion 15b connected to the outer periphery of the bottom portion 15 a; and an outer peripheral portion 15c connected to the bent portion 15 b.

The cooker body 20 includes an outer body 21 having an open upper end and a shoulder 22 closing the opening of the outer body 21. A hinge portion 23 for attaching the lid body 40 is provided on the back of the shoulder body 22. The cooker body 20 includes a receiving portion 25 for receiving the pot 15. The accommodating portion 25 is a bottomed cylinder having a metal inner barrel 26 formed in a cylindrical shape and a resin (nonconductive material) protective frame 27 formed in a tray shape, and the accommodating portion 25 is disposed at a lower portion of the opening of the shoulder 22. When the pot 15 is accommodated in the accommodating portion 25, the axis a of the pot 15 coincides with the axis B of the accommodating portion 25. In the following description, the axis B of the housing portion 25 may be referred to as the axis B of the protective frame 27.

As shown in fig. 2 and 3, in the protective frame 27, a coil 29 for induction-heating the pot 15 is disposed on the outside opposite to the inside of the accommodating pot 15. The coils 29 of the present embodiment are arranged in a row of 6 in the circumferential direction around the axis B of the protective frame 27 (see fig. 6).

A plurality of ferrite cores 30 are disposed outside the coil 29 (see fig. 7). The plurality of ferrite cores 30 are held by one ferrite holder (holder) 31 (see fig. 8). The coil 29 is held between the ferrite holder 31 and the protection frame 27 by attaching the same. In fig. 2 and 3, reference numeral 36 denotes a reflection plate (magnetism prevention plate) for preventing magnetism from leaking to the outside of the exterior body 21.

As shown in fig. 1 and 2, the lid body 40 includes an exterior body 41 having a planar shape covering the upper surface of the shoulder body 22, and is rotatably attached to the hinge connection portion 23. An inner lid 42 is provided on the lower surface of the outer case 41 facing the pan 15 in a state where the lid 40 is closed with respect to the cooker body 20. The inner lid 42 includes a sealing member 43 for sealing an inner peripheral surface of an upper end opening of the pot 15. The inner lid 42 may be detachably disposed on the exterior body 41, or may be provided in an undetachable manner.

Referring to fig. 2 and 3, a power supply board 45 and an IH board 46 are disposed in the cooker body 20. These are disposed in the housing space 28 between the exterior body 21 and the housing portion 25 via the substrate holders 47A, 47B. A cord reel 48 around which a cord having a power plug can be wound is electrically connected to the power supply board 45. A control unit (not shown) for controlling the electric components including the coil 29 is mounted on the IH substrate 46.

The control section is constituted by a single or a plurality of microcomputers and other electronic devices. The control unit controls the coil 29 based on the detection result of the temperature sensor 49, and the pot 15 is inductively heated by the coil 29. Thus, in the case of a rice cooker, the rice in the pot 15 is heated to cook the rice, and in the case of a cooker, the food in the pot 15 is heated to finish cooking. After cooking or cooking is completed, the heat preservation is continued so that the inside of the pot 15 is maintained at a given temperature.

Specifically, when explaining the control of the coils 29, the control unit sets two coils located at opposite positions among the plurality of coils 29 as a set of coil groups, and individually controls each coil group. The coils 29 of the same group are simultaneously energized and simultaneously de-energized. The control unit energizes one coil group of the plurality of coil groups to deenergize the remaining coil groups, and sequentially switches the energized coil groups. In a single direction in the circumferential direction of the housing portion 25, the energized coil groups are sequentially switched. Of course, the control unit may control the plurality of coils 29 individually.

In order to concentrate magnetic flux generated by the current passing through the coil 29 and to suppress leakage of magnetic flux to the outside of the package 21, it is effective to dispose a plurality of ferrite cores 30 for the respective coils 29. However, the number of ferrite cores 30 that can be arranged in a limited space is limited. Therefore, in the present embodiment, two coils 29 adjacent in the circumferential direction of housing 25 share one ferrite core 30 so that a plurality of ferrite cores 30 are arranged for each coil 29 without increasing the size of outer package 21. Hereinafter, the mounting structure of the coil 29 and the ferrite core 30 to the protective frame 27 will be specifically described.

As shown in fig. 4 and 5, the coil 29 is disposed on the outer surface 27a side of the protective frame 27. The ferrite core 30 is held by a ferrite holder 31 and is disposed outside the coil 29.

Referring to fig. 2, the curved portion 15b of the pan 15 is curved with a predetermined curvature so as to gradually expand in diameter along the axis a of the pan 15 from the bottom portion 15a (lower side) toward the outer peripheral portion 15c (upper side). The outer peripheral portion 15c includes a first portion 15d positioned in the protective frame 27 and a second portion 15e positioned in the inner barrel 26. The first portion 15d has a conical tube shape whose diameter increases with distance from the bent portion 15 b. The second portion 15e is cylindrical extending along the axis a.

The protective frame 27 is shaped like a tray surrounding the first portion 15d of the pan 15. The protection frame 27 includes: a bottom portion 27b disposed at a distance from the bottom portion 15 a; a bent portion 27c disposed at a distance from the bent portion 15 b; and an outer peripheral portion 27d disposed at a distance from the first portion 15d of the outer peripheral portion 15 c. A cylindrical penetrating portion 27e through which the temperature sensor 49 is arranged is provided to protrude outward at the center of the bottom portion 27 b.

Referring to fig. 4 and 5, a plate-shaped partition wall 27f is provided on the outer surface 27a side of the protective frame 27 so as to protrude, and the partition wall 27f is located between and partitions the coils 29 adjacent in the circumferential direction of the protective frame 27. The plurality of partition walls 27f extend from the bottom portion 27b to the curved portion 27c in a radial shape. Positioning portions 27g, 27h for positioning the inner peripheral portion of the coil 29 are provided between the partition walls 27f adjacent in the circumferential direction. A pair of positioning portions 27g adjacent in the circumferential direction of the protective frame 27 as viewed from the direction in which the axis B of the protective frame 27 extends are constituted by projections for screw-fixing the ferrite holder 31. The pair of positioning portions 27h adjacent to each other in the radial direction of the protective frame 27 are formed by T-shaped ribs.

Each coil 29 is a ring-shaped coil wound with a plurality of windings, and generates eddy current by applying high-frequency current, thereby inductively heating the pot 15. Referring to fig. 6, the coil 29 has a substantially egg-shaped main body and a pair of lead wires (not shown) extending from the main body. The radius of curvature of the small-diameter portion 29a located on one end side in the longitudinal direction is smaller than the radius of curvature of the large-diameter portion 29b located on the other end side in the longitudinal direction. The pair of side portions 29c connected to the small diameter portion 29a and the large diameter portion 29b have a larger radius of curvature than the large diameter portion 29 b.

The plurality of coils 29 are arranged at intervals of the thickness of the partition wall 27f in the circumferential direction of the protective frame 27 around the axis B of the protective frame 27. Each coil 29 is disposed on the outer surface 27a of the bezel 27 so as to extend from the bottom portion 27b of the bezel 27 along the outer peripheral portion 27 d. More specifically, the small diameter portion 29a is disposed on the side of the through portion 27e (lower side in fig. 2) and extends along the bottom portion 27 b. The large diameter portion 29b is disposed on the inner barrel 26 side (upper side in fig. 2) and extends along the outer peripheral portion 27 d. The pair of side portions 29c extend along the bottom portion 27b and the peripheral portion 27 d.

As shown in fig. 4 and 7, the ferrite core 30 is a rectangular parallelepiped member made of a magnetic material. The plurality of ferrite cores 30 are constituted by a first ferrite core 30A disposed separately from the coil 29 and a second ferrite core 30B disposed across two coils 29 adjacent in the circumferential direction of the protective frame 27.

The first ferrite core 30A includes a first member 30A1 and a second member 30A2 arranged in series with a space in the radial direction when viewed from the direction in which the axis B of the bezel 27 extends. Their overall lengths are the same and in use, first component 30A1 and second component 30A2 do not differ. The serial arrangement is not limited to a serial arrangement in a strict geometrical sense (in a straight line), and includes a configuration in which the serial arrangement is shifted in the circumferential direction of the protective frame 27 within a range on the same coil 29.

The first member 30a1 is disposed outside the small diameter portion 29a so as to be parallel to the bottom portion 27b, and extends in the radial direction of the receiving portion 25. One end of the first member 30a1 located inward in the longitudinal direction of the coil 29 is located outward of the top of the small diameter portion 29 a. The other end of the first member 30a1 located on the outer side in the longitudinal direction of the coil 29 is located in the opening of the coil 29 while passing over the inner peripheral portion of the small diameter portion 29 a.

The second member 30a2 is disposed outside the large diameter portion 29B so as to be parallel to the outer peripheral portion 27d, and extends in the direction in which the axis B of the bezel 27 extends. One end of the second member 30a2 located on the inner side (lower side) in the longitudinal direction of the coil 29 is located in the opening of the coil 29 beyond the inner peripheral portion of the large diameter portion 29 b. The other end of the second member 30a2 located on the outer side (upper side) in the longitudinal direction of the coil 29 is located outside the coil 29 beyond the outer peripheral portion of the large diameter portion 29 b.

The second ferrite core 30B is bridged between two first members 30a1 adjacent in the circumferential direction of the protective frame 27 between the side portion 29c of the coil 29 on one side and the side portion 29c of the coil 29 on the other side. The second ferrite core 30B is disposed outside the side portion 29c so as to be parallel to the bottom portion 27B, and extends in the circumferential direction of the housing portion 25. Here, the term "extend in the circumferential direction" means extend in a direction tangential to an imaginary circle (not shown) centered on the axis B of the protective frame 27.

The overall length of the second ferrite core 30B is shorter than the overall length of any of the first section 30A1 and the second section 30A2 that constitute the first ferrite core 30A. In the short axis direction of the coil 29, both ends of the second ferrite core 30B are positioned in the vicinity of the inner peripheral portion beyond the outer peripheral portion of the side portion 29c, respectively. That is, both ends of the second ferrite core 30B are located at positions separated by a predetermined interval from the first member 30a 1.

When the number of the coils 29 is set to Nc, the total number Nf of the ferrite cores 30 including the first ferrite core 30A and the second ferrite core 30B satisfies the following relationship. More specifically, the number Nf1 of the first ferrite cores 30A is 2Nc (Nf1 is 2Nc), and the number Nf2 of the second ferrite cores 30B is Nc (Nf2 is Nc).

Nf＝2Nc+Nc

Nc: number of coils

Nf: total number of ferrite cores

In the present embodiment, since the number Nc of the coils 29 is 6, the number Nf1 of the first ferrite cores 30A is 12, and the number Nf2 of the second ferrite cores 30B is 6. However, the number Nc of the coils 29 is not limited to 6, and when two coils are controlled as a set, the number Nc may be an even number of 4 or more, and when the control is performed individually, the number Nc may be an odd number or an even number of 3 or more. In these cases, the total number Nf of the ferrite cores 30, more specifically, the number Nf1 of the first ferrite cores 30A and the number Nf2 of the second ferrite cores 30B are varied in accordance with the number Nc of the coils 29.

The angle α (see fig. 7) formed by the first ferrite core 30A (the first member 30A1) and the second ferrite core 30B is preferably set to be in the range of 45 degrees to 90 degrees, and in the present embodiment, 60 degrees. If the angle α is set to be too small, the ferrite core 30 is displaced from the respective coils 29, and the concentration of the magnetic flux and the suppression of the leakage of the magnetic flux are insufficient. If the angle α is set too large, a portion where the second ferrite core 30 cannot be arranged parallel to the coil 29 is generated, and therefore, the concentration of the magnetic flux and the suppression of the leakage of the magnetic flux are still insufficient. In order to prevent these problems, the angle α is preferably set within the above-described predetermined range.

As shown in fig. 8 to 10, the ferrite holder 31 is attached to the outer surface 27a side of the protection frame 27 while holding all the ferrite cores 30 in the above-described arrangement. Thereby, all the coils 29 are sandwiched and held between the protective frame 27 and the ferrite holder 31 (see fig. 2). The ferrite holder 31 includes: a screw hole portion 31a for fixing to the protection frame 27; a connection portion 31b for electrically connecting the lead wires of the predetermined coil 29; and a screw fixing portion 31c for screw-fixing the reflection plate 36 and the terminal cover 37 (see fig. 2).

More specifically, the ferrite holder 31 includes: a central portion 32; a first holding portion 33 radially protruding from the central portion 32; a frame portion 34 connected to the first holding portion 33 adjacent in the circumferential direction of the protective frame 27; and a second holding portion 35 provided in the frame portion 34.

The central portion 32 is an annular portion centered on the axis B. The through portion 27e of the protection frame 27 is disposed to penetrate the inner space of the center portion 32.

The first holding portions 33 are provided at equal intervals in the circumferential direction around the central portion 32 in the same number (6) as the first ferrite cores 30A. The first holding portion 33 is provided with a first portion 33a holding the first member 30a1 and a second portion 33b holding the second member 30a 2. In a state of being assembled to the protective frame 27, the first portion 33a extends in the radial direction of the protective frame 27 along the bottom portion 27 b. In the assembled state to the bezel 27, the second portion 33B extends along the outer peripheral portion 27d along the axis B of the bezel 27.

More specifically, the first holding portion 33 includes a pair of side plate portions 33c extending from the first portion 33a to the second portion 33b, and a connecting portion 33d connecting these. In the first portion 33a, an H-shaped coming-off prevention portion 33e for preventing the first member 30a1 from coming off is provided on the edge of the side plate portion 33c on the side opposite to the coil 29. In the second portion 33b, a tab-like coming-off prevention portion 33f for preventing the second member 30a2 from coming off is provided on the edge of the side plate portion 33c on the side opposite to the coil 29. In the first portion 33a and the second portion 33b, elastic pieces 33g that urge the first ferrite core 30A toward the retaining portions 33e and 33f are provided on the coil 29 side of the side plate portion 33c, respectively.

In the radial direction of the ferrite holder 31, the inner end of the first holding portion 33 (first portion 33a) is closed by the central portion 32, and the outer end of the first holding portion 33 (second portion 33b) is open. The first member 30a1 is inserted from the outside toward the inside in the radial direction with respect to the first portion 33 a. The second member 30a2 is inserted into the second portion 33b from the open portion of the outer end, and is positioned in contact with the coupling portion 33 d.

The frame 34 is provided on the outer end side of the first portion 33a with the axis B as the center, and is positioned below the bent portion 27c of the protective frame 27 in the assembled state shown in fig. 2. The frame portion 34 is provided between all the first holding portions 33 adjacent in the circumferential direction, and has a circular shape centered on the axis B as a whole.

The second holding portions 35 are provided inside the frame portions 34 in the radial direction of the ferrite holder 31, extend in the circumferential direction of the protective frame 27 along the bottom portion 27B, and hold the second ferrite cores 30B.

As shown most clearly in fig. 10, the second holding portion 35 includes an outer peripheral wall 35a surrounding an outer peripheral portion of the second ferrite core 30B. A locking claw 35B that locks with the second ferrite core 30B is provided on the edge of the outer peripheral wall 35a on the coil 29 side. A coupling portion 35c is provided on an edge of the outer peripheral wall 35a on the opposite side to the locking claw 35b so as to close a part of the outer peripheral wall 35 a. The connection portion 35c is provided with an elastic piece 35d that biases the second ferrite core 30 toward the locking claw 35 b.

The second ferrite core 30B is inserted into the second holding portion 35 from the locking claw 35B side in the axial direction of the ferrite holder 31.

The heating cooker 10 configured as described above has the following features.

The plurality of ferrite cores 30 include a first ferrite core 30A disposed separately from the coil 29 and a second ferrite core 30B disposed across two coils 29 adjacent in the circumferential direction of the housing 25. That is, the two coils 29 share one second ferrite core 30B. Therefore, the contrary object of securing the number of ferrite cores 30 arranged for each coil 29 and reducing the total number Nf of ferrite cores 30 arranged for all coils can be achieved.

By ensuring the number Nf of ferrite cores 30 disposed in the coil 29, both concentration of magnetic flux generated by the passage of current to the coil 29 and suppression of leakage of magnetic flux to the outside of the device can be achieved. Since the total number Nf of the ferrite cores 30, specifically, the number Nf2 of the second ferrite cores 30B is reduced, the space for arranging the second ferrite cores 30B and the number of the second holding portions 35 associated therewith can be reduced, and therefore, the size of the apparatus (package 21) can be prevented from being increased.

When the number of coils 29 is set to Nc, the total number Nf of ferrite cores 30 including the first ferrite core 30A and the second ferrite core 30B satisfies Nf 2Nc + Nc. Specifically, when viewed from the direction in which the axis B extends, two first ferrite cores 30A are disposed with a space therebetween so as to extend in the radial direction of the housing 25 with respect to each coil 29, and the second ferrite cores 30B are disposed so as to extend in the circumferential direction of the housing 25. Therefore, a plurality of first ferrite cores 30A and second ferrite cores 30B can be arranged for the respective coils 29. Therefore, the concentration of the magnetic flux and the suppression of the leakage of the magnetic flux to the outside of the device can be reliably achieved.

The angle α formed by the first ferrite core 30A and the second ferrite core 30B is 45 degrees or more and 90 degrees or less. Therefore, the first ferrite core 30A and the second ferrite core 30B can be arranged uniformly with respect to each coil 29. Therefore, the concentration of the magnetic flux and the suppression of the leakage of the magnetic flux to the outside of the device can be reliably achieved.

One ferrite holder 31 for holding all of the first ferrite core 30A and the second ferrite core 30B is provided, and the plurality of coils 29 are held between the ferrite holder 31 and the housing 25. Therefore, the ease and accuracy of assembling the plurality of ferrite cores 30 to the plurality of coils 29 can be improved.

The heating cooker 10 of the present invention is not limited to the configuration of the above embodiment, and various modifications may be made.

For example, as described above, the number Nc of the coils 29 may be an even number of 4 or more, or an odd number or an even number of 3 or more.

Two or more second ferrite cores 30B may be disposed across adjacent coils 29. One first ferrite core 30A may extend in the radial direction of the housing 25, or 3 or more. That is, the number and arrangement of the first ferrite cores 30A and the second ferrite cores 30B may be changed as necessary within a range in which concentration of magnetic flux and suppression of leakage of magnetic flux to the outside of the device can be achieved.

The ferrite holders 31 may be provided separately from the respective coils 29, or may be provided separately from the respective ferrite cores 30.

Claims (6)

1. A heating cooker is characterized by comprising:

a bottomed cylindrical containing part for containing the pot;

a plurality of coils arranged in a circumferential direction around an axis of the accommodating portion on an outer surface side of the accommodating portion, and configured to inductively heat the pot;

a first ferrite core separately disposed from the coil; and

and a second ferrite core disposed so as to straddle two of the coils adjacent to each other in the circumferential direction of the housing portion.

2. The heating cooker according to claim 1,

the number of the coils and the total number of ferrite cores including the first ferrite core and the second ferrite core satisfy the following relationship:

Nf＝2Nc+Nc，

nc is the number of coils,

nf is the total number of ferrite cores.

3. The heating cooker according to claim 1 or 2,

two of the first ferrite cores are arranged in series in a radial direction of the housing portion with respect to the respective coils when viewed from a direction in which the axis extends,

the second ferrite core is arranged to extend in a circumferential direction of the housing portion when viewed from a direction in which the axis extends.

4. The heating cooker according to claim 3,

an angle formed by the first ferrite core and the second ferrite core is 45 degrees or more and 90 degrees or less.

5. The heating cooker according to any one of claims 1, 2, and 4,

the heating cooker is provided with a holding member for holding the first ferrite core and the second ferrite core,

the holder is attached to the housing portion such that the plurality of coils are interposed between the holder and the housing portion.

6. The heating cooker according to claim 3,

the heating cooker is provided with a holding member for holding the first ferrite core and the second ferrite core,

the holder is attached to the housing portion such that the plurality of coils are interposed between the holder and the housing portion.

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