CN212901633U - Electromagnetic heating device - Google Patents

Abstract

The utility model provides an electromagnetic heating device, include casing (10), establish coil panel (30), fan (20) and circuit board (40) in casing (10) and wear to establish on casing (10) and one end with power cord (60) that circuit board (40) electricity is connected still include: establish first separator (51) in casing (10), first separator (51) be located coil panel (30) with between the lateral wall of casing (10), just first separator (51) are used for being located power cord (60) fender in casing (10) keep away from one side of coil panel (30) in first separator (51), the utility model provides an electromagnetic heating device has reduced the acceleration of coil panel to the power cord ageing rate, has improved the anti magnetic interference's of power cord ability, has solved the problem that the power cord is close to the coil panel and leads to the power cord to age with higher speed in the current electromagnetism stove.

Description

Electromagnetic heating device

Technical Field

The utility model relates to a household electrical appliances field, in particular to electromagnetic heating device.

Background

An electromagnetic oven is a widely used electromagnetic oven, which is an electric electromagnetic oven heated by electromagnetic induction and consists of a high-frequency induction coil panel (namely an excitation coil), a controller, a ferromagnetic material pan bottom cooker and other units.

At present, the induction cooker mainly comprises a bottom shell, a coil panel and a panel, wherein the panel is covered on the bottom shell, the panel and the bottom shell form a cavity, and the coil panel, a circuit board and a fan are arranged in the cavity. The power cord is fixed on the bottom shell through a wire clamping groove formed in the bottom shell, and one end of the power cord extending into the bottom shell is electrically connected with the circuit board, so that a wire core of the power cord located in the bottom shell is in an exposed state.

However, in the above electromagnetic oven, since the internal space of the electromagnetic oven is limited, after the wire core of the power line in the bottom case is connected to the circuit board, the exposed wire core of the power line is close to the coil panel, and the aging of the power line is accelerated by the high temperature generated by the coil panel, thereby affecting the service life of the whole electromagnetic oven.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the sinle silk that mentions among the background art and relate to the power cord in the electromagnetism stove is close to the coil panel and leads to the power cord ageing with higher speed, the utility model provides an electromagnetic heating device of coil panel is kept away from to the power cord.

The utility model provides an electromagnetic heating device, casing, establishing coil panel, fan and circuit board in the casing and wear to establish on the casing and one end with the power cord that the circuit board electricity is connected still includes: establish first isolator in the casing, first isolator is located the coil panel with between the lateral wall of casing, just first isolator is used for will being located in the casing the power cord keeps off first isolator is kept away from one side of coil panel, so that be located in the casing the power cord is kept away from the coil panel.

The electromagnetic heating device that this embodiment provided restricts the position that will be located the power cord of casing through first isolator, and the power cord that has avoided being located the casing like this is close to the coil panel to the high temperature that has alleviateed the coil panel and produced is ageing with higher speed to the internal power line, and in addition, make the power cord that is located the casing keep away from the coil panel through first isolator, has reduced the interference of coil panel to the power cord that is located the casing like this, thereby electromagnetic compatibility (EMC)'s dB value has been improved, can satisfy the test requirement when making EMC test. Therefore, the electromagnetic heating device provided by the application reduces the acceleration of the aging speed of the coil panel on the power line, improves the anti-magnetic interference capability of the power line, and solves the problem that the power line is accelerated and aged because the power line is close to the coil panel in the existing electromagnetic oven.

Optionally, the method further includes: further comprising: a second spacer disposed within the housing;

the side wall with be equipped with the air outlet on the region that the power cord is close to in the casing, the second separator is close to the air outlet setting, so that in the casing the power cord is located the second separator is kept away from one side of air outlet.

The power cord position in with the casing is injectd through the second separator, prevents being close to the air outlet of power cord in the casing, and the power cord in the casing is connected the completion back in the casing like this, when the test, because interior power cord is difficult for being close to the air outlet under the blockking of second separator, so the experiment indicates the exposed sinle silk of power cord in difficult contact to accord with the ann rule requirement, the risk of being difficult for taking place the electric shock during the use.

Optionally, a magnetic ring is disposed on the power line in the housing, and the second isolation member is located between the magnetic ring and the air outlet.

The magnetic interference of the coil disc to the power line can be reduced through the magnetic ring, so that the anti-magnetic interference of the power line can be improved, and the test requirements among the power line, the circuit board and the coil disc can be met.

Optionally, the distance between the first separator and the coil disc is between 10 and 50 mm. Thus, the distance between the inner power line and the coil panel is increased after the first separator is arranged.

Optionally, the distance between the second spacer and the first spacer is between 30-40 mm.

Optionally, the distance between the first isolating piece and the side wall is 30-40mm, so that during safety test, an experiment finger is not easy to contact with a wire core of the inner power line, the requirement of safety is met, and the electric shock risk is avoided during use.

And/or the shortest distance between the first isolating piece and the outer edge of the circuit board is 30-45 mm.

Optionally, the distance between the second spacer and the sidewall is between 35-45 mm;

and/or the shortest vertical distance between the second separator and the transverse direction of the coil disc is 80-100mm, and the shortest vertical distance between the second separator and the longitudinal direction of the coil disc is 80-100 mm.

Optionally, the diameter of the first and second spacers is between 4-8 mm;

the height of the first and second spacers is between 20-30 mm.

Optionally, the housing includes a first sidewall and a second sidewall that are oppositely disposed, and a third sidewall and a fourth sidewall that are respectively connected to the first sidewall and the second sidewall and are oppositely disposed;

the fan is arranged close to one end of the first side wall and one end of the third side wall;

the circuit board is arranged along part of the first side wall and part of the fourth side wall;

the circuit board is arranged on a region surrounded by the fan, the circuit board, the second side wall, part of the fourth side wall and part of the third side wall;

the second end of the power line is clamped with the wire clamping groove arranged on the second side wall;

the first separator is located between the coil disk and the fourth side wall;

air outlets are formed in the areas, close to the first isolating piece, of the second side wall, the areas, close to the first isolating piece, of the fourth side wall and the areas, close to the coil panel, of the third side wall.

Optionally, the distance between the second spacer and the second sidewall is between 30-45 mm;

the distance between the first spacer and the second sidewall is between 60-80 mm.

The structure of the present invention and other objects and advantages thereof will be more clearly understood from the following description of the preferred embodiments taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic perspective view of an inside of an electromagnetic heating device provided by the present invention;

fig. 2 is a schematic front view of the inside of the electromagnetic heating device provided by the present invention;

fig. 3 is a schematic position diagram of the first separator and the second separator in the electromagnetic heating device provided by the present invention.

Description of reference numerals:

10-a housing;

11-a first side wall;

12-a second side wall;

13-a third side wall;

14-a fourth side wall;

121. 131, 141-air outlet;

15-wire clamping grooves;

16-a bottom wall;

20-a fan;

30-a coil disk;

40-a circuit board;

41-a connecting terminal;

51-a first spacer;

52-a second spacer;

60-a power line;

61-external power supply line;

62-internal power lines;

70-magnetic ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are embodiments of a unit of the present invention, rather than embodiments of a whole unit. The embodiments in the present invention, all other embodiments obtained by a person of ordinary skill in the art without any creative work, belong to the protection scope of the present invention.

Fig. 1 is a schematic view of an internal three-dimensional structure of an electromagnetic heating device, fig. 2 is a schematic view of an internal front view of an electromagnetic heating device, and fig. 3 is a schematic view of positions of a first spacer and a second spacer in an electromagnetic heating device.

The electromagnetic heating device provided by the embodiment can be an induction cooker, and can also be other devices adopting electromagnetic heating, such as an electromagnetic heating plate in a tea water machine.

This embodiment specifically takes an induction cooker as an example for explanation.

Referring to fig. 1, the electromagnetic heating apparatus provided in this embodiment may include: the electromagnetic heating device comprises a shell 10, and a coil panel 30, a fan 20 and a circuit board 40 which are arranged in the shell 10, wherein when the electromagnetic heating device is an electromagnetic oven, the electromagnetic heating device further comprises a panel (not shown), the panel and the shell 10 enclose a cavity, the coil panel 30 and the fan 20 are located in the cavity, of course, the electromagnetic heating device further comprises a circuit board 40, the circuit board 40 is also arranged in the shell 10, the coil panel 30 and the fan 20 are both connected with the circuit board 40, and a control unit on the circuit board 40 controls the heating power of the coil panel 30, the operation of the fan 20 and the like.

Referring to fig. 1, the coil panel 30 is disposed in the middle of the housing 10, the fan 20 is disposed at one end of the housing 10, the circuit board 40 is disposed at one side of the fan 20 and the coil panel 30, and cold air blown by the fan 20 dissipates heat of the coil panel 30 and the circuit board 40, so that heat generated by the coil panel 30 and the circuit board 40 can be timely exhausted out of the housing 10.

Referring to fig. 1, in order to supply power to the components in the housing 10, the electromagnetic heating apparatus further includes: the power cord 60, one end of the power cord 60 penetrates the housing 10 and extends into the housing 10 and is electrically connected to the circuit board 40, specifically, one end of the power cord 60 is electrically connected to a power module on the circuit board 40, so as shown in fig. 1, the power cord 60 includes an outer power cord 61 located outside the housing 10 and an inner power cord 62 located inside the housing 10, the inner power cord 62 is electrically connected to the connection terminal 41 on the circuit board 40, and in order to facilitate the electrical connection between the inner power cord 62 and the connection terminal of the circuit board 40, a core of a part of the inner power cord 62 is exposed.

However, limited by the limitation of the inner space of the housing 10, when the inner power line 62 is electrically connected to the connection terminal of the circuit board 40, the position of the inner power line 62 is not fixed, so that the inner power line 62 is easy to be close to the coil panel 30, which results in the aging of the inner power line 62 accelerated by the high temperature generated by the coil panel 30, thereby affecting the life of the whole machine, and furthermore, since the core of the inner power line 62 is exposed and close to the coil panel 30, the radiation generated by the coil panel 30 causes magnetic interference to the inner power line 62, which reduces the dB value of electromagnetic compatibility (EMC) during the EMC test, thereby causing the EMC not to meet the requirement.

It should be noted that electromagnetic compatibility (EMC) refers to comprehensive evaluation of interference level (EMI) and interference rejection (EMS) of electronic products in terms of electromagnetic field, and is an existing test method.

For this reason, in order to solve the above problem, the present embodiment provides an electromagnetic heating apparatus, further including: and a first separator 51 provided in the housing 10, the first separator 51 being located between the coil disk 30 and the side wall of the housing 10, and the first separator 51 being used for blocking the power line 60 located in the housing 10 at a side of the first separator 51 away from the coil disk 30, so that the power line 60 located in the housing 10 is away from the coil disk 30.

In this embodiment, the position of the inner power line 62 in the housing 10 is limited by the first isolator 51, for example, after the inner power line 62 is electrically connected to the circuit board 40, the inner power line 62 is blocked at a side far away from the coil panel 30 by the first isolator 51, which prevents the inner power line 62 from approaching the coil panel 30, thereby reducing the accelerated aging of the inner power line 62 caused by the high temperature generated by the coil panel 30, and in addition, the inner power line 62 is far away from the coil panel 30 by the first isolator 51, thereby reducing the interference of the coil panel 30 on the inner power line 62, and improving the dB (decibel) value of electromagnetic compatibility (EMC), so that the EMC test requirement can be satisfied.

In the embodiment of the present application, referring to fig. 2, the housing 10 includes a first side wall 11 and a second side wall 12 oppositely disposed, and a third side wall 13 and a fourth side wall 13 respectively connected to and oppositely disposed from the first side wall 11 and the second side wall 12, and of course, the housing 10 may also include a bottom wall 16, and the first side wall 11, the second side wall 12, the third side wall 13 and the fourth side wall 14 are disposed around an outer edge of the bottom wall 16.

The fan 20 is disposed near one end of the first side wall 11 and the third side wall 13, the circuit board 40 is disposed along a portion of the first side wall 11 and a portion of the fourth side wall 14, the circuit board 40 is disposed on an area enclosed by the fan 20, the circuit board 40, the second side wall 12, a portion of the fourth side wall 14 and a portion of the third side wall 13, one end (i.e., the second end) of the inner power line 62 far from the circuit board 40 is clamped with a wire clamping groove disposed on the second side wall 12, and the first spacer 51 is located between the coil panel 30 and the fourth side wall 14.

In order to dissipate heat, air outlets are formed in the areas of the second side wall 12 and the fourth side wall 14 close to the first separator 51 and the area of the third side wall 13 close to the coil panel 30, as shown in fig. 2, an air outlet 121 is formed in the second side wall 12, an air outlet 131 is formed in the third side wall 13, and an air outlet 141 is formed in the fourth side wall 14. Wherein, the air outlet 141 is close to the inner power line 62.

Referring to fig. 2, when the air outlet 141 is formed in the fourth sidewall 14, the first spacer 51 limits the inner power line 62 to a side away from the coil panel 30, so that a partial area of the inner power line 62 is close to the air outlet 141 of the fourth sidewall 14, and a part of wire cores of the inner power line 62 are exposed, so that an experimental finger (a metal finger during safety inspection) can directly touch the wire cores of the inner power line 62, which results in non-compliance with safety requirements, electric shock risk during use, and great safety hazard.

For this reason, in order to solve the above problem, in the embodiment of the present application, as shown in fig. 2, the method further includes: the second partition 52 is disposed in the housing 10, the second partition 52 is disposed adjacent to the air outlet 141, the power line 60 disposed in the bottom case includes a first end and a second end, that is, the inner power line 62 includes a first end and a second end, the first end is electrically connected to the circuit board 40, the second end is close to the second sidewall 12 of the housing 10, for example, the wire-clamping slot 15 disposed on the second sidewall 12, and the second end of the inner power line 62 can be clamped in the wire-clamping slot 15. Referring to fig. 2, the second partition 52 blocks the inner power line 62 at a side of the second partition 52 away from the fourth sidewall 14.

Therefore, in this embodiment, the second end position of the inner power line 62 is limited by the second isolation member 52, and the second end of the inner power line 62 is prevented from being close to the air outlet 141, so that after the inner power line 62 is connected in the housing 10, during testing, because the inner power line 62 is not easy to be close to the air outlet 141 under the blocking of the second isolation member 52, the test finger is not easy to contact with the exposed core of the inner power line 62, thereby meeting the requirement of safety regulations and avoiding the risk of electric shock during use.

In a possible implementation manner, in order to further reduce the magnetic interference of the coil disk 30 on the power line 60, therefore, the method further includes: the magnetic ring 70 and the magnetic ring 70 are sleeved on the inner power line 62, for example, as shown in fig. 2, the magnetic ring 70 is sleeved on one end of the inner power line 62 far away from the circuit board 40, so that when the power line 60 is inserted into the housing 10, the magnetic interference of the coil panel 30 to the power line 60 can be reduced through the magnetic ring 70, and the magnetic interference resistance of the power line 60 can be improved, so that the test requirements between the power line 60 and the circuit board 40 and the coil panel 30 can be met.

It should be noted that the length of the magnetic ring 70 is specifically set according to actual requirements, in the embodiment of the present application, the length of the magnetic ring 70 is 30mm, and in some examples, a longer magnetic ring 70 may also be used.

When the magnetic ring 70 is sleeved outside the internal power supply, the second isolation member 52 is tangent to the magnetic ring 70, and in order to make the second isolation member 52 and the magnetic ring 70 closely tangent, after the second isolation member 52 is tangent to the magnetic ring 70, the interference of the outer circle of the magnetic ring 70 is greater than 0.5, so that when the second isolation member 52 is closely abutted to the magnetic ring 70, the internal power line 62 is not easy to approach the air outlet 141.

In one possible implementation, the shortest distance h1 between the first spacer 51 and the coil disc 30 is between 10-50mm, see fig. 3. For example, the shortest distance h1 between the first separator 51 and the coil disk 30 may be 20mm or 30mm, and when the first separator 51 is not provided, the shortest distance between the inner power supply line 62 and the coil disk 30 is 10mm, so in the embodiment of the present application, the distance between the inner power supply line 62 and the coil disk 30 is increased by providing the first separator 51.

In one possible implementation, the distance h5 between second spacer 52 and first spacer 51 is between 30-40mm, see FIG. 3. For example, the distance h5 between the second spacer 52 and the first spacer 51 may be 35 or 33 mm.

In one possible implementation, referring to fig. 3, the distance h3 between the first spacer 51 and the fourth sidewall 14 is between 30-40mm, for example, the distance h3 between the first spacer 51 and the fourth sidewall 14 may be 35mm or 38 mm. When the distance h3 between the first isolation piece 51 and the fourth side wall 14 is between 30-40mm, during the safety test, the experiment indicates that the core of the inner power line 62 is not easy to be contacted, thereby meeting the safety requirement, and when in use, the electric shock risk does not exist.

The shortest distance h2 between the first spacer 51 and the outer edge of the circuit board 40 is between 30-45 mm. For example, the shortest distance h2 between the first spacer 51 and the outer edge of the circuit board 40 may be 40mm or 37 mm. This ensures that the first separator 51 can position the inner power supply line 62 away from the coil disk 30.

In a possible implementation manner, the distance h6 between the second isolation member 52 and the fourth sidewall 14 is between 35 and 45mm, for example, the distance h6 between the second isolation member 52 and the fourth sidewall 14 may be 38mm or 42mm, which ensures that the wire core of the inner power line 62 is not easily touched by the test finger after entering from the air outlet 141 during the safety test, so as to meet the safety requirement, and there is no electric shock risk during the use.

In one possible implementation, the shortest vertical distance h9 between the second separator 52 and the transverse direction of the coil disk 30 is between 80-100mm, and the shortest vertical distance h8 between the second separator 52 and the longitudinal direction of the coil disk 30 is between 80-100 mm. For example, the shortest vertical distance h9 between the second separator 52 and the coil disk 30 in the transverse direction may be 88mm, and the shortest vertical distance h8 between the second separator 52 and the coil disk 30 in the longitudinal direction may be 82 mm. This ensures that the inner power conductor 62 does not come close to the coil disk 30.

In one possible implementation, the diameter of the first and second spacers 51 and 52 is between 4-8mm, for example, the diameter of the first and second spacers 51 and 52 may be 6mm or 5mm, and the diameter of the first and second spacers 51 and 52 may be the same or different. Wherein the first and second spacers 51 and 52 may have a certain amount of deformation when the diameters of the first and second spacers 51 and 52 are small, which facilitates the winding of the inner power line 62. When the diameters of the first and second spacers 51 and 52 are larger, the blocking restriction of the inner power supply line 62 is stronger, thereby facilitating the restriction of the position of the inner power supply line 62.

The height of the first and second partitions 51 and 52 is between 20-30mm, for example, the height of the first and second partitions 51 and 52 may be 24mm, so that the inner power line 62 does not come loose and jump over the first and second partitions 51 and 52, and in addition, the height is convenient for installation.

In one possible implementation, the distance h7 between the second spacer 52 and the second sidewall 12 is between 30-45mm, for example, the distance h7 between the second spacer 52 and the second sidewall 12 may be 37mm or 70 mm.

The distance h4 between the first spacer 51 and the second side wall 12 is between 60-80 mm. For example, the distance h4 between the first partition 51 and the second sidewall 12 may be 70mm or 65 mm.

In the description of the present invention, it is to be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships that are intermediate to those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically stated otherwise.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. The utility model provides an electromagnetic heating device, includes casing (10), establishes coil panel (30), fan (20) and circuit board (40) in casing (10) and wear to establish on casing (10) and one end with power cord (60) that circuit board (40) electricity is connected, its characterized in that still includes: establish first isolator (51) in casing (10), first isolator (51) are located coil panel (30) with between the lateral wall of casing (10), just first isolator (51) are used for keeping off being located in casing (10) power cord (60) keep away from first isolator (51) one side of coil panel (30) to the messenger is located in casing (10) power cord (60) are kept away from coil panel (30).

2. The electromagnetic heating apparatus according to claim 1, further comprising: a second spacer (52) provided in the housing (10);

an air outlet (141) is formed in the area, close to the power line (60), of the side wall in the shell (10), and the second isolating piece (52) is arranged close to the air outlet (141), so that the power line (60) in the shell (10) is located on one side, far away from the air outlet (141), of the second isolating piece (52).

3. Electromagnetic heating device according to claim 2, wherein said power line (60) inside said casing (10) is provided with a magnetic ring (70), and said second partition (52) is located between said magnetic ring (70) and said air outlet (141).

4. Electromagnetic heating device according to any of claims 1-3, wherein the shortest distance between the first separator (51) and the coil disc (30) is between 10-50 mm.

5. Electromagnetic heating device according to any one of claims 1 to 3, characterised in that the distance between said first spacer (51) and said side wall is comprised between 30 and 40 mm;

and/or the shortest distance between the first isolating piece (51) and the outer edge of the circuit board (40) is 30-45 mm.

6. Electromagnetic heating device according to claim 2 or 3, characterized in that the distance between said second spacer (52) and said side wall is comprised between 35-45 mm;

and/or the shortest vertical distance between the second separator (52) and the transverse direction of the coil disc (30) is 80-100mm, and the shortest vertical distance between the second separator (52) and the longitudinal direction of the coil disc (30) is 80-100 mm.

7. Electromagnetic heating device according to claim 2 or 3, characterized in that said first and second spacers (51, 52) are each a cylindrical structure, and the diameter of said cylindrical structure is comprised between 4 and 8 mm;

the height of the first separator (51) and the second separator (52) is between 20 and 30 mm.

8. Electromagnetic heating device according to claim 2 or 3, characterized in that said first and second spacers are each integrally formed with said housing (10).

9. Electromagnetic heating device according to claim 2 or 3,

the shell (10) comprises a first side wall (11) and a second side wall (12) which are oppositely arranged, and a third side wall (13) and a fourth side wall (14) which are respectively connected with the first side wall (11) and the second side wall (12) and are oppositely arranged;

the fan (20) is arranged close to one end of the first side wall (11) and one end of the third side wall (13);

the circuit board (40) is arranged along a part of the first side wall (11) and a part of the fourth side wall (14);

the circuit board (40) is arranged on an area surrounded by the fan (20), the circuit board (40), the second side wall (12), a part of the fourth side wall (14) and a part of the third side wall (13);

the second end of the power line (60) is clamped with the wire clamping groove arranged on the second side wall (12);

the first separator (51) is located between the coil disc (30) and the fourth side wall (14);

air outlets are formed in the areas, close to the first partition (51), of the second side wall (12), the fourth side wall (14) and the third side wall (13), of the third side wall (13), and the areas, close to the coil panel (30).

10. Electromagnetic heating device according to claim 9, characterized in that the distance between said second spacer (52) and said second side wall (12) is comprised between 30-45 mm;

the distance between the first spacer (51) and the second side wall (12) is between 60-80 mm.

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