CN111107684A

CN111107684A - Electromagnetic heating assembly and electromagnetic heating cooking utensil

Info

Publication number: CN111107684A
Application number: CN201911425679.8A
Authority: CN
Inventors: 郭兴家; 易亮; 吴金华; 范吉昌; 张翼飞
Original assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-05-05

Abstract

The invention discloses an electromagnetic heating assembly and an electromagnetic heating cooking appliance, wherein the electromagnetic heating assembly comprises a disc seat, a first heating structure and a second heating structure, and the disc seat is provided with an installation side; the first heating structure comprises a first coil heating unit, and the first coil heating unit is arranged on the mounting side of the disc seat; the second heating structure is arranged on the installation side of the disc seat and is located at the heating blind area of the disc seat so as to heat the heating blind area of the disc seat at least. According to the invention, the second heating structure is arranged at the heating blind area of the tray seat, the heating area and the range of the electromagnetic heating assembly are changed, the heating area is distributed in multiple areas and multiple points, the heating blind area of the electromagnetic heating assembly is reduced, the heating effect of the electromagnetic heating assembly is improved, the heating area of the electromagnetic heating cooking utensil is further distributed in multiple areas, and the food materials are promoted to be disordered or violently rolled to stimulate nutrition precipitation and improve the cooking effect.

Description

Electromagnetic heating assembly and electromagnetic heating cooking utensil

Technical Field

The invention relates to the technical field of household appliances, in particular to the technical field of kitchen electricity, and particularly relates to an electromagnetic heating assembly and an electromagnetic heating cooking appliance.

Background

The electromagnetic heating cooking utensil is generally provided with an electromagnetic heating assembly, the electromagnetic heating assembly mostly comprises a base electromagnetic coil heating unit, and based on the principle of the electromagnetic heating unit, at the position where no coil generates a magnetic field, such as the central position of a single electromagnetic coil heating unit, the electromagnetic heating assembly is extremely easy to form a heating blind area, the heating effect of the electromagnetic heating assembly is influenced, and finally, the heating area of the electromagnetic heating cooking utensil is mainly concentrated on at least one whole circle or a whole ring, and a plurality of heating areas or heating points are difficult to form.

Disclosure of Invention

The invention mainly aims to provide an electromagnetic heating assembly and an electromagnetic heating cooking utensil, aiming at reducing the heating blind area of the electromagnetic heating assembly and forming a multi-area strong and weak distributed heating area.

In order to achieve the above object, the present invention provides an electromagnetic heating assembly, including:

a tray base having a mounting side;

the first heating structure comprises a first coil heating unit, and the first coil unit is arranged on the installation side of the disc seat; and the number of the first and second groups,

and the second heating structure is arranged on the installation side of the disk seat and is positioned at the heating blind area of the disk seat so as to at least heat the heating blind area of the disk seat.

Optionally, a plurality of first coil heating units are arranged, the plurality of first coil heating units are arranged at intervals in the circumferential direction of the tray seat, and an installation area is reserved at a heating blind area corresponding to the tray seat;

the second heating structure comprises a heating device arranged in the mounting area.

Optionally, the heating device comprises an infrared heating disk or a hot disk heating disk.

Optionally, the heating device comprises a plurality of second coil heating units, and the plurality of first coil heating units and the plurality of second coil heating units are arranged at intervals in the direction from the center to the edge of the disk seat;

the projection parts of the second coil heating units on the horizontal plane are overlapped, and two adjacent second coil heating units with overlapped projections are not on the same horizontal plane.

Optionally, the first coil heating units are provided in plurality, at least part of the first coil heating units extend to the heating blind areas of the tray seat, and projections of the first coil heating units at the corresponding heating blind areas are overlapped, and two adjacent first coil heating units with overlapped projections are not on the same horizontal plane.

Optionally, the center of the disk seat is convexly arranged towards one side;

electromagnetic heating subassembly still includes the magnetic stripe, locates first coil heating unit keeps away from one side of disk seat, the magnetic stripe has and is close to the inner at disk seat center and keep away from the outer end at disk seat center and orientation the first side of first coil heating unit, wherein, certainly in the direction of the outer end to the inner of magnetic stripe, the orientation is personally submitted to the first side of magnetic stripe first coil heating unit slope sets up.

Optionally, the thickness of the inner end of the magnetic strip is greater than the thickness of the outer end of the magnetic strip.

Optionally, the tray comprises a bottom part extending from the center of the tray towards the edge, and a side part extending from the periphery of the bottom part towards one side;

the first coil heating unit is arranged on the side part and extends towards the center of the disk seat to a transition part at least covering the bottom part and the side part.

Optionally, the distance from the center of the tray to the bottom periphery is S1, and the distance from the center of the tray to the edge of the tray is S2, 1/3 ≦ S1/S2 ≦ 2/3.

Optionally, the shape of the first coil heating unit is adapted to the shape of the mounting side of the seat at the location.

Optionally, the first coil heating unit extends from a side portion of the tray at least to a transition portion between the side portion and the bottom portion of the tray, and the first coil heating unit is disposed in a curved shape adapted to the bottom portion and the side portion of the tray in a direction from the bottom portion to the side portion of the tray and/or in a circumferential direction of the tray.

The present invention also proposes an electromagnetic heating cooking appliance comprising an electromagnetic heating assembly comprising:

a tray base having a mounting side;

the first heating structure comprises a first coil heating unit, and the first coil heating unit is arranged on the installation side of the disc seat; and the number of the first and second groups,

According to the technical scheme provided by the invention, the second heating structure is arranged at the heating blind area of the tray seat, the heating area and the range of the electromagnetic heating assembly are changed, the heating area is in multi-area and multi-point distribution, the heating blind area of the electromagnetic heating assembly is reduced, the heating effect of the electromagnetic heating assembly is improved, further the heating area of the electromagnetic heating cooking appliance is in multi-area strong and weak distribution, food materials are promoted to be disordered or violently rolled, nutrition precipitation is stimulated, and the cooking effect is improved.

Drawings

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

Fig. 1 is a top view of a first embodiment of an electromagnetic heating assembly provided by the present invention;

FIG. 2 is a side view of the electromagnetic heating assembly of FIG. 1;

FIG. 3 is a top view of a second embodiment of an electromagnetic heating assembly provided by the present invention;

FIG. 4 is a perspective view of the electromagnetic heating assembly of FIG. 3;

FIG. 5 is a side view of the electromagnetic heating assembly of FIG. 3;

FIG. 6 is a top view of a third embodiment of an electromagnetic heating assembly provided by the present invention;

FIG. 7 is a perspective view of the electromagnetic heating assembly of FIG. 6;

FIG. 8 is a side view of the electromagnetic heating assembly of FIG. 6;

FIG. 9 is a top view of a fourth embodiment of an electromagnetic heating assembly provided by the present invention;

FIG. 10 is a top view of a fifth embodiment of an electromagnetic heating assembly provided by the present invention;

FIG. 11 is a top view of a sixth embodiment of an electromagnetic heating assembly in accordance with the present invention

FIG. 12 is a top view of a seventh embodiment of an electromagnetic heating assembly provided by the present invention;

FIG. 13 is a perspective view of the electromagnetic heating assembly of FIG. 12;

FIG. 14 is a side view of the electromagnetic heating assembly of FIG. 12;

fig. 15 is a cross-sectional view of an eighth embodiment of an electromagnetic heating assembly provided by the present invention;

FIG. 16 is a cross-sectional view of the electromagnetic heating assembly of FIG. 15;

fig. 17 is a cross-sectional view of a ninth embodiment of an electromagnetic heating assembly provided by the present invention;

FIG. 18 is a cross-sectional view of the electromagnetic heating assembly of FIG. 17;

figure 19 is a cross-sectional view of a seventeenth embodiment of an electromagnetic heating assembly provided by the present invention;

FIG. 20 is a cross-sectional view of the electromagnetic heating assembly of FIG. 19;

fig. 21 is a cross-sectional view of an eleventh embodiment of an electromagnetic heating assembly provided by the present invention;

fig. 22 is a cross-sectional view of the electromagnetic heating assembly of fig. 21.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Electromagnetic heating assembly	20	First coil heating unit
10	Dish seat	30	Heating device
				11	Bottom part	31	Second coil heating unit
12	Side part	40	Magnetic strip
				13	At the transition

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In view of the above, the present invention provides an electromagnetic heating cooking appliance, such as an induction cooker, an electric cooker, a food processor, a cooking machine, or a cooking machine, and the like, the electromagnetic heating cooking appliance includes an electromagnetic heating assembly, and fig. 1 to 22 show an embodiment of an electromagnetic heating assembly 100 provided by the present invention.

Referring to fig. 1, 3 and 9, the electromagnetic heating assembly 100 includes a tray 10, a first heating structure and a second heating structure, wherein the tray 10 has a mounting side; the first heating structure comprises a first coil heating unit 20, and the first coil heating unit 20 is arranged on the installation side of the disk seat 10; the second heating structure is arranged on the installation side of the tray seat 10 and is located at the heating blind area of the tray seat 10 so as to heat the heating blind area of the tray seat 10 at least.

It should be noted that the heating blind area of the seat 10 refers to a position or an area on the seat 10 where no coil generates a magnetic field, which may be formed in the central area of the seat 10, for example, when an electromagnetic coil heating unit is disposed on the seat 10, a manner of winding multiple strands of wires into concentric circles is usually adopted, and such a winding manner may cause the central position of the coil winding where the heating strong area of the seat 10 is mainly concentrated, whereas the central position of the seat 10 where no coil generates a magnetic field is easy to form the heating blind area at the central position of the seat 10; alternatively, when a plurality of solenoid coil heating units are disposed on the tray 10, a blind heating area is easily formed between adjacent solenoid coil heating units because no coil generates a magnetic field, and in addition, a blind heating area is easily formed at the center position of a single solenoid coil heating unit. Therefore, when the second heating structure is disposed, it should be disposed according to the actual number and arrangement of the electromagnetic coil heating units disposed on the tray 10, and the second heating structure is correspondingly disposed at the center of a single electromagnetic coil heating unit and/or at the heating blind area formed between adjacent electromagnetic coil heating units, but in all embodiments provided by the present invention, the heating blind area is formed at the center of the tray 10, and the second heating structure is correspondingly disposed at the center of the tray 10 as an example for further description.

In the technical scheme provided by the invention, the second heating structure is arranged at the heating blind area of the tray seat 10, the heating area and the range of the electromagnetic heating assembly 100 are changed, the heating area is distributed in multiple areas and multiple points, the heating blind area of the electromagnetic heating assembly 100 is reduced, the heating effect of the electromagnetic heating assembly 100 is improved, further the heating area of the electromagnetic heating cooking appliance is distributed in multiple areas, and the food materials are promoted to be disordered or violently rolled to stimulate nutrition precipitation and improve the cooking effect.

One first coil heating unit 20, that is, a plurality of concentric coils wound by multiple strands, may be provided in number, and are arranged at intervals; correspondingly, the second heating structure can be formed in various ways: for the electromagnetic heating assembly 100 in which the first coil heating unit 20 is provided in plurality, a heating device 30, such as a hot plate or an electromagnetic coil, may be separately installed at the heating dead zone of the tray 10; for the electromagnetic heating assembly 100 having only one first coil heating unit 20, the heating intensity at the heating blind area of the electromagnetic heating assembly 100 can be enhanced by changing the shape of the magnetic strip at the heating blind area of the tray 10. The first coil heating unit 20 may be directly attached to the tray 10 by, for example, gluing after being wound, or may be attached to the tray 10 without being attached to the mounting side of the tray by means of a coil fixing bracket (not shown), for example, after the first coil heating unit 20 is wound or attached to the coil fixing bracket, the coil fixing bracket is mounted to the tray 10, or the coil fixing bracket is formed by being protruded from the mounting side of the tray 10, and the first coil heating unit 20 is wound around the coil fixing bracket. When the second heating structure is the heating device 30 and the heating device 30 is an electromagnetic coil, the installation manner thereof is the same as that of the first coil heating unit 20, and the detailed description thereof is omitted here.

In the case that the first coil heating units 20 are provided in plural, the specific number of the first coil heating units 20 is not limited, and the number of the first coil heating units 20 is 2 or more than 2, and the shape of the first coil heating units 20 is not specifically limited, and may be, for example, a circle, an ellipse, a polygon or other irregular shapes, etc., the plural first coil heating units 20 are provided at intervals in the circumferential direction of the disk seat 10, and a mounting area is reserved at a heating blind area corresponding to the disk seat 10; the second heating structure comprises a heating device 30, which is provided in the mounting area.

Referring to fig. 1 and 2, in a first embodiment of the electromagnetic heating assembly 100, the heating device 30 includes an infrared heating plate or a hot plate heating plate. Because infrared heating dish or hot plate heating dish as long as the heater setting is enough intensive, can accomplish whole hot plate even heating, install it in electromagnetic heating subassembly 100's heating blind area department, combine through a plurality of electromagnetic heating units and infrared or hot plate heating two kinds of modes, can compensate conventional concentric circle coil and have the problem of central heating blind area, still formed the effect of multizone heating simultaneously, more helped improving electromagnetic heating subassembly 100's heating effect. Further, the first coil heating unit 20 and the infrared heating plate or the hot plate heating plate that the heating blind area department set up are independently controlled respectively, can independently work also can simultaneous working, thereby make the practical application in-process of electromagnetic heating subassembly 100, can adjust the heating region according to the heating demand, for example use electromagnetic heating cooking utensil as the electricity rice cooker, when only needing low power heating, can control infrared heating plate or hot plate heating plate and work alone, form the slow heating effect of slow fire a kind of deep pot, or control the first coil heating unit 20 work alone in the outside, form the heating effect that peripheral heating rolled, and when needs high-power heating, then infrared heating plate or hot plate heating plate and first coil heating unit 20 heat simultaneously, form the heating effect that big fire rolled. In addition, the plurality of first coil heating units 20 may be connected in series or in parallel, and the plurality of first coil heating units 20 may be controlled independently from each other, so that a plurality of heating regions formed by the plurality of first coil heating units 20 may be controlled to work simultaneously or partially to meet different heating requirements. For all embodiments in which the first coil heating unit 20 is provided with a plurality of first coil heating units, the working modes of the first coil heating units 20 may be set as such, and details are not described later.

Referring to fig. 3 to 5, in the second embodiment of the electromagnetic heating assembly 100, the heating device 30 includes a plurality of second coil heating units 31, and the plurality of first coil heating units 20 and the plurality of second coil heating units 31 are spaced apart from each other in a direction from the center to the edge of the susceptor 10; the projections of the second coil heating units 31 on the horizontal plane are partially overlapped, and two adjacent second coil heating units 31 with overlapped projections are not on the same horizontal plane. Through set up a plurality of second coil heating unit 31 alone in disk seat 10 center department, and set up the projection part overlap of a plurality of second coil heating unit 31 in corresponding disk seat 10 heating blind area department, the magnetic field intensity of electromagnetic heating subassembly 100 in heating blind area department has been strengthened, and simultaneously, because the central point of disk seat 10 is no longer the center of first coil heating unit 20, consequently, the central zone of electromagnetic heating subassembly 100 also can heat, thereby the heating blind area at disk seat 10 center has been eliminated, the heating blind area scope of disk seat 10 has been reduced, make electromagnetic heating subassembly 100 have better heating effect. It can be understood that, in this embodiment, the number of the first coil heating units 20 and the number of the second coil heating units 31 are not specifically limited, and the number of the first coil heating units 20 and the number of the second coil heating units 31 may be the same or different, and in the second embodiment shown in fig. 3 to 5, the number of the first coil heating units 20 and the number of the second coil heating units 31 are both set to be 4, while in other embodiments that adopt the same manner to form the second heating structure, for example, in the third embodiment shown in fig. 6 to 8, the number of the first coil heating units 20 is 8, and the number of the second coil heating units 31 is 4, both the magnetic field strength at the heating blind zone of the electromagnetic heating assembly 100 can be enhanced, and the purpose of improving the heating effect can be achieved.

Referring to fig. 9 to 11, the heating device 30 may also be a single second coil heating unit 31 disposed at the center of the seat 10, in which case, the number and shape of the first coil heating units 20 are also not limited, in the fourth embodiment of the electromagnetic heating assembly 100 shown in fig. 9, the number of the first coil heating units 20 is 6, and the first coil heating units are disposed in a circular shape, in the fifth embodiment of the electromagnetic heating assembly 100 shown in fig. 10, the number of the first coil heating units 20 is 6, and the first coil heating units 20 are disposed in an elliptical shape, and in the sixth embodiment of the electromagnetic heating assembly 100 shown in fig. 11, the number of the first coil heating units 20 is 6, and the first coil heating units are disposed in a hexagonal shape.

In addition to the above two embodiments of separately providing the heating device 30 at the heating blind area of the seat 10, the second heating structure can also be implemented by changing the arrangement of the plurality of first coil heating units 20, and fig. 12 to 14 are a seventh embodiment of the electromagnetic heating assembly 100 provided by the present invention. In the seventh embodiment, the first coil heating units 20 are provided in plurality, at least a part of the first coil heating units 20 extend to the heating blind areas of the disk seat 10, and the projected parts at the corresponding heating blind areas are overlapped, and two adjacent first coil heating units 20 with overlapped projected parts are not in the same horizontal plane. Like this, strengthened the magnetic field intensity of electromagnetic heating subassembly 100 heating blind area department for electromagnetic heating subassembly 100's heating blind area department also can heat, thereby has reduced electromagnetic heating subassembly 100's heating blind area, has improved electromagnetic heating subassembly 100's heating effect.

For the electromagnetic heating assembly 100, the magnetic field strength is generally enhanced by providing the magnetic strip, so that the second heating structure is formed at the heating blind area of the seat 10, and the structure of the magnetic strip can be correspondingly changed. Specifically, because the dish seat actually applied to the electromagnetic heating cooking apparatus such as an electric cooker is usually arranged in a curved surface with a convex center and concave ends, and the conventional arrangement mode of the magnetic strip is horizontal, and the horizontal heights and thicknesses of the two ends of the magnetic strip are equal, the distance between the magnetic strip near the center of the dish seat and the dish seat is larger, which is not beneficial to the enhancement of the central magnetic field of the electromagnetic heating assembly, based on this, the purpose of enhancing the magnetic field strength of the center position of the electromagnetic heating assembly 100 is realized by reducing the distance between the magnetic strip near the center of the dish seat 10 and the dish seat 10. Referring to fig. 15 and 17, the center of the tray 10 is convex toward one side; electromagnetic heating assembly 100 still includes magnetic stripe 40, locates the one side that first coil heating unit 20 kept away from disk seat 10, and magnetic stripe 40 has the inner that is close to disk seat 10 center and keeps away from disk seat 10 center and the first side of first coil heating unit 20 of orientation, and wherein, in the direction from the outer end of magnetic stripe 40 to inner, the first side of magnetic stripe 40 is personally submitted towards the slope setting of first coil heating unit 20. So, the horizontal height of magnetic stripe 40 the inner is greater than the 40 outer ends of magnetic stripe, also, has drawn close the distance of 40 inner and disk seat 10 of magnetic stripe to can strengthen the magnetic field intensity of 100 center departments of electromagnetic heating subassembly, be the magnetic stripe 40 design towards disk seat 10 slope in addition and be favorable to more leading the magnetic line of force to the pan on, thereby play and reduce pan center heating blind area, improve the effect of heating.

Specifically, with reference to fig. 15 and 16, the structure of the magnetic strip 40 is designed such that the thickness of the inner end of the magnetic strip 40 is greater than the thickness of the outer end of the magnetic strip 40 in the eighth embodiment of the electromagnetic heating assembly 100 provided by the present invention. That is, the magnetic stripe 40 has a first side facing the first coil heating unit 20 and a second side far away from the first coil heating unit 20, and in the fifth embodiment, the first side of the magnetic stripe 40 is inclined toward the base 10, and the second side of the magnetic stripe 40 does not need to be changed, so that the change of the overall structure of the magnetic stripe 40 is small, and the implementation is easy. Referring to fig. 17 and 18, in the ninth embodiment of the electromagnetic heating assembly 100 according to the present invention, the first side and the second side of the inner end of the magnetic stripe 40 are both inclined toward the base 10, that is, the inner end of the magnetic stripe 40 is integrally inclined toward the base 10, and the purpose of reducing the distance between the inner end of the magnetic stripe 40 and the base 10 can also be achieved.

The above-described manner of enhancing the strength of the central magnetic field of the electromagnetic heating assembly 100 by changing the structure of the magnetic strip 40 can be applied to the electromagnetic heating assembly 100 having only one first coil heating unit 20 wound in concentric circles, as shown in the eighth embodiment shown in fig. 15 and 16, and the ninth embodiment shown in fig. 17 and 18; the electromagnetic heating assembly 100 having a plurality of first coil heating units 20 may also be applied as long as the electromagnetic heating assembly 100 is provided with the first coil heating unit 20 at the center of the corresponding seat 10, such as the fourth to sixth embodiments shown in fig. 9 to 11, the tenth embodiment shown in fig. 19 and 20, and the eleventh embodiment shown in fig. 21 and 22 (in the eleventh embodiment, the electromagnetic coil heating unit 20 at the center of the corresponding seat 10 is formed as the second heating structure in the center area of the seat 10 by the improvement of the structure of the coil heating unit 20 and the magnetic strip 40), which can achieve the purpose of reducing the dead zone of the center heating of the electromagnetic heating assembly 100.

The way of reducing the blind heating area of the electromagnetic heating assembly 100 by providing the second heating structure at the center of the disk seat 10 can be applied to the flat-bottom-shaped or concave-shaped (i.e. bowl-shaped) electromagnetic heating assembly 100, for example, the first to eleventh embodiments can be applied to the flat-bottom-shaped electromagnetic heating assembly 100, and the second to eleventh embodiments can be applied to the concave-shaped electromagnetic heating assembly 100. For the concave electromagnetic heating assembly 100, referring to fig. 1, 3 or 4, the tray 10 includes a bottom 11 extending from the center of the tray 10 toward the edge, and a side 12 extending from the periphery of the bottom 11 toward one side; the first coil heating unit 20 is provided at the side portion 12 and extends towards the center of the tray 10 to cover at least the transition 13 to the bottom portion 11 and the side portion 12. Some of the embodiments, for example, the solution that the heating device 30 is separately disposed at the center of the tray 10, including the first to sixth embodiments, the first coil heating unit 20 may extend to cover the bottom 11 of the tray 10, or may only extend to the transition 13 covering the bottom 11 and the side 12 of the tray 10, so that the heating regions may be formed at the bottom 11, the side 12, and the transition 13 between the bottom 11 and the side 12 of the tray 10, and have a better thermal effect; for example, by changing the arrangement of the first coil heating unit 20 or changing the structure of the magnetic strip 40, including the seventh to eleventh embodiments, the first coil heating unit 20 needs to extend to cover the bottom 11 of the tray 10, so that the second heating structure located at the center of the tray 10 can be formed by changing the arrangement of the first coil heating unit 20 or the structure of the magnetic strip 40. In addition, for the fifth to eighth embodiments, the magnetic strips 40 may further include a bottom magnetic strip disposed corresponding to the bottom portion 11 and a side magnetic strip disposed corresponding to the side portion 12, and at least the structure of the bottom magnetic strip may be improved.

Further, for an electromagnetic heating cooking appliance such as an electric cooker, the shape of the tray 10 is adapted to the shape of an inner pot of the electric cooker, wherein the bottom 11 of the tray 10 corresponds to the bottom 11 of the inner pot, and the side 12 of the tray 10 corresponds to the side 12 of the inner pot, so that the first coil heating units 20 are distributed at the bottom 11 and the side 12 of the tray 10 and at the transition 13 between the bottom 11 and the side 12, so that heating areas are formed at the bottom 11 and the side 12 of the pot and at the transition 13 between the bottom 11 and the side 12, thereby improving the heating effect of the electromagnetic heating assembly 100 on the inner pot. Referring to fig. 1, the bottom 11 and side 12 of the tray 10 are defined as follows: the distance from the center of the tray seat 10 to the periphery of the bottom 11 is S1, the distance from the center of the tray seat 10 to the edge of the tray seat 10 is S2, and S1/S2 is not less than 1/3 and not more than 2/3, so that the inner pot matched with the shape of the tray seat 10 meets the proportion, the shape of the inner pot is attractive, and on the premise that the volumes of the inner pots are the same, the problems that the ratio of S1/S2 is too small to enable the inner pot to be in a thin and high shape, food materials are stacked too high to influence the heating effect of the upper-layer food materials can be solved, and the problems that the ratio of S1/S20 is too large to enable the inner pot to be in a short and high shape and the occupied area of the inner pot.

It should be noted that, when the tray 10 is configured in a concave shape, the bottom 11 and the side 12 may be configured in a continuous arc shape, and in order to avoid the problem that the food material is accumulated in the bottom 11 of the inner pot in a large amount, which is likely to affect the heating effect of the food material at the bottom 11, please refer to fig. 2, in this embodiment, the bottom 11 of the tray 10 is configured in a plane, and the side 12 is configured in an arc shape upward from the periphery of the bottom 11, in this way, the portion configured in a plane may be defined as the bottom 11, and the portion configured in an arc shape is defined as the side 12, and the ratio of the bottom 11 occupying the tray 10 is also the same as the above definition.

In order to reduce the gap between the first coil heating unit 20 and the tray 10 and improve the heating effect of the electromagnetic heating assembly 100, the shape of the first coil heating unit 20 is preferably adapted to the shape of the mounting side of the tray 10 at the position, and the first coil heating unit 20 can be specifically wound on the mounting side of the attachment tray 10.

Further, the specific way of adapting the shape of the first coil heating unit 20 to the shape of the mounting side of the seat 10 at the location is: the first coil heating unit 20 extends from the bottom 11 of the tray 10 toward the side 12 to the side 12 of the tray 10, and the first coil heating unit 20 is disposed in a curved shape adapted to the bottom 11 and the side 12 of the tray 10 in a direction from the bottom 11 to the side 12 of the tray 10 and/or in a circumferential direction of the tray 10. In this way, the first coil heating unit 20 is adapted to the shape of the mounting side of the tray 10 in the direction from the bottom 11 to the side 12 of the tray 10 and/or in the circumferential direction of the tray 10, so that the distances between the first coil heating unit 20 and the tray 10 are kept equal, and the first coil heating unit is more fit with each other, accordingly, when a pot is placed on the working side of the electromagnetic heating assembly 100 for heating, the distances between the coil heating unit 20 and the pot in the direction from the bottom 11 to the side 12 of the tray 10 and/or in the circumferential direction of the tray 10 are kept equal, and further, the bottom to the side and/or in the circumferential direction of the pot are heated uniformly, which is beneficial to further improving the heating effect of the electromagnetic heating assembly 100.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An electromagnetic heating assembly, comprising:

a tray base having a mounting side;

2. The electromagnetic heating assembly according to claim 1, wherein a plurality of first coil heating units are provided, the plurality of first coil heating units are arranged at intervals in the circumferential direction of the tray, and a mounting area is reserved at a heating blind area center corresponding to the tray;

3. An electromagnetic heating assembly according to claim 2, wherein the heating means comprises an infrared heating plate or a hot plate heating plate.

4. The electromagnetic heating assembly of claim 2, wherein the heating means comprises a plurality of second coil heating units, the plurality of first coil heating units being spaced apart from the plurality of second coil heating units in a direction from a center to an edge of the susceptor;

5. The electromagnetic heating assembly of claim 1, wherein the first coil heating units are provided in plurality, at least a portion of the first coil heating units extend to the heating blind areas of the tray, the projections of the first coil heating units at the corresponding heating blind areas are overlapped, and two adjacent first coil heating units with overlapped projections are not in the same horizontal plane.

6. The electromagnetic heating assembly of claim 1, wherein the center of the tray is convex toward one side;

7. An electromagnetic heating assembly as claimed in claim 6 wherein the thickness of said inner end of said magnetic strip is greater than the thickness of said outer end of said magnetic strip.

8. The electromagnetic heating assembly of claim 1, wherein the tray comprises a bottom portion extending from a center toward an edge of the tray, and a side portion extending from a periphery of the bottom portion toward one side;

9. The electromagnetic heating assembly of claim 8, wherein the distance from the center of the tray to the bottom periphery is S1, and the distance from the center of the tray to the edge of the tray is S2, 1/3 ≦ S1/S2 ≦ 2/3.

10. An electromagnetic heating assembly according to claim 8, wherein the shape of the first coil heating unit is adapted to the shape of the mounting side of the seat at which it is located.

11. An electromagnetic heating assembly according to claim 10, wherein the first coil heating unit extends from a side of the seat at least to a transition of the side and the bottom of the seat, and is arranged in a curved shape adapted to the bottom and the side of the seat in a direction from the bottom to the side of the seat and/or in a circumferential direction of the seat.

12. An electromagnetic heating cooking appliance comprising an electromagnetic heating assembly as claimed in any one of claims 1 to 11.