WO2011113325A1

WO2011113325A1 - Induction heating coil disk with improved coil winding structure

Info

Publication number: WO2011113325A1
Application number: PCT/CN2011/071557
Authority: WO
Inventors: 刘森泉
Original assignee: 漳州灿坤实业有限公司
Priority date: 2010-03-19
Filing date: 2011-03-07
Publication date: 2011-09-22
Also published as: CN201681717U

Abstract

An induction heating (IH) coil disk with an improved coil winding structure comprises an induction heating (IH) coil disk body (1), a first coil (2) and a second coil (3). The first coil (2) and the second coil (3) are circularly wound in a parallel and alternate manner in the disk surface of the same plane of the induction heat (IH) coil disk body (1). The first coil (2) and the second coil (3) are arranged at a certain distance from each other. The induction heating (IH) coil disk with the improved coil winding structure can solve problems of heat efficiency and magnetic flux leakage, and is beneficial to reducing cost of copper wires and winding operation intensity.

Description

[Name of invention made by ISA according to Rule 37.2] An improved induction coil for wire winding structure

Technical field

The present invention relates to an IH reel, and more particularly to an improved IH reel having a coil winding structure.

Background technique

Referring to FIG. 1 and FIG. 2, an IH reel 1' of the prior art includes a set of coils 2' and a set of coils 3'; wherein a set of coils 2' are wound around the IH reel 1 On the inner side of the disk surface, the b-group coil 3' is wound around the disk surface of the IH reel 1', that is, the a-group coil 2' and the b-group coil 3' are distributed inside and outside on the disk surface of the IH reel 1'. However, the coil winding structure of such an IH reel inevitably has some disadvantages. For example, when a group of coils 2' and a group of coils 3' are used in series, although the total inductance value is large, that is, the firepower is small, since the winding area is small at this time, that is, the heating area is small, The situation is unreasonable in use; when the a group coil 2' or the b group coil 3' is used alone, although the inductance value is small, that is, the firepower is large, since the winding area is small at this time, the heating area is small. Therefore, this situation is also unreasonable in use; when a pair of coil 2' and b group of coils 3' are used in parallel, in order to obtain a proper inductance value after parallel connection, the inductance values of the two sets of coils need to be increased. Therefore, it is necessary to increase the number of windings of the two sets of coils. However, while increasing the number of coils of the coils, the cost of the copper wires is also increased, and the limited space of the disk surface also limits the space for thickening of the copper wires. Therefore, this situation is disadvantageous in both production and heat dissipation.

Referring to FIG. 3 and FIG. 4, another IH reel 4' of the prior art includes a c-group coil 5' and a d-group coil 6'; wherein the coil winding method of the IH reel 4' is : First, the c-coil 5' is wound around the disk surface of the IH reel 4', then an insulating sheet 7' is placed over the c-group coil 5', and finally the d-group coil 6' is wound on the insulating sheet 7'. . Therefore, the two sets of coils of the IH reel 4' are stacked on top of each other on the disk surface. However, this IH There are also several disadvantages to the coil winding structure of the reel. For example, because the two sets of coils are stacked on top of each other, there is a gap between the two sets of coils and the bottom of the pot. Therefore, this situation is not conducive to the design of the control circuit and the working quality of the IH. Further, since the distance between the d-group coil 6' of the upper layer and the core of the IH reel 4' is significantly farther, there is a problem of thermal efficiency and magnetic field leakage.

Obviously, the coil winding structure of the prior art IH reel often has some shortcomings, and therefore, further improvement is needed.

Summary of the invention

The object of the present invention is to overcome the deficiencies of the prior art and to provide an improved IH reel with a coil winding structure, which is wound around a coil of the IH reel in two sets of coils, and a switch is arranged between the two sets of coils. The components thus well solve the deficiencies of the prior art IH reels.

The technical solution adopted by the present invention to solve the technical problem is: an IH reel with improved coil winding structure, comprising an IH reel body, a first coil and a second coil; the first coil and the second coil are The disk is wound in parallel on the same plane of the IH reel body, and the first coil and the second coil are spaced apart from each other by a distance.

At least one switching element is also mounted between the first coil and the second coil to switch the first coil and/or the second coil.

The invention has the beneficial effects that since the first coil and the second coil are wound in parallel on the same plane of the IH reel body, and the first coil and the second coil are spaced apart from each other by a distance, When two sets of coils are used in series or separately, a winding area is the same in both cases, so it is better in use; since the distance between the two sets of coils and the bottom of the pot is the same, the IH reel is advantageous. Control the design of the IH circuit and the IH working quality, and there is no problem of thermal efficiency and magnetic field leakage; since the two sets of coils are parallel to each other, the equivalent inductance value is made due to the strong mutual inductance between the two sets of coils. Larger, which not only makes a large proportion of power distribution between the two sets of coils more practical, but the mutual inductance between the two sets of coils allows the number of coils of each set of coils to be relatively reduced, thereby helping to reduce copper wire Cost and ease the strength of the winding operation.

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, an improved IH reel of the coil winding structure of the present invention is not limited to the embodiment.

DRAWINGS

1 is a schematic view showing a winding structure of an IH reel of the prior art;

Figure 2 is a partial cross-sectional view of the IH reel of Figure 1;

3 is a schematic view showing a winding structure of another IH reel of the prior art;

Figure 4 is a partial cross-sectional view of the IH reel of Figure 3;

Figure 5 is a schematic view showing the winding structure of the IH reel of the present invention;

Figure 6 is a partial cross-sectional view of the IH reel of the present invention;

Figure 7 is a schematic view of the circuit connection when the invention is applied on the double-sided grilling device (1);

Fig. 8 is a schematic view showing the circuit connection (2) of the present invention when applied to a double-sided grill.

detailed description

For example, as shown in FIG. 5 and FIG. 6, the improved IH reel of the coil winding structure of the present invention comprises an IH reel body 1, a first coil 2 and a second coil 3; The coil 2 and the second coil 3 are wound in parallel on the disk surface of the same plane of the IH reel 1, and the first coil 2 and the second coil 3 are spaced apart from each other by a distance.

At least one switching element may also be fitted between the first coil 2 and the second coil 3 to switch the first coil 2 and/or the second coil 3.

An improved IH reel of the coil winding structure of the present invention, wherein the first coil 2 and the second coil 3 are wound in parallel on the same plane of the IH reel body 1 and the first coil 2 and the second coil 3 are spaced apart from each other by a distance, so that when two sets of coils are used in series or a single coil is used alone, although the inductance values are different in the two cases, that is, the former has a larger inductance value and the firepower is smaller. The latter has a small inductance value and a large firepower, but the winding area of both cases, that is, the heating area, is the same, so it is better in use; since the distance between the two sets of coils and the bottom of the pot is the same, The IH reel is beneficial to control the design of the IH circuit and the IH working quality, and there is no problem of thermal efficiency and magnetic field leakage. Since the two sets of coils are parallel to each other, the two sets of coils have a strong mutual inductance effect. The effective inductance value is larger, which not only makes the two groups of coils have a greater proportion of power distribution, but also has a practical value, and the mutual inductance between the two sets of coils can relatively reduce the number of coils of each group of coils, and further beneficial to Less cost and reduce the strength of the copper wire of the winding operation.

An improved IH reel of the coil winding structure of the present invention is taken as an example in the application of the double-sided grill, see FIG. 7 and FIG. On the double-sided grill, the inductor L1 is wound around the upper surface of the double-sided grill, and the inductor L2A and the inductor L2B are wound in parallel on the lower surface of the double-sided grill. The inductor L2A and the inductor L2B are spaced apart from each other by a distance, and a switching element SW having a bidirectional switching function is disposed between the inductors L1, L2A, and L2B. When the double-sided grill is used for the upper and lower sides of the pan, as shown in FIG. 7, the switching element SW connects the inductor L1 and the inductor L2B in series. In this case, it is only necessary to make the inductance values of the inductor coil L1 and the inductor coil L2B equal, so that the power of the upper and lower disc faces of the double-sided grill is the same, and therefore, it is suitable for the requirements of the double-sided grill. In this case, the upper disc surface power of the double-sided griller = the total power of the IH reel *L1/(L1+L2B), the lower disc surface power of the double-sided griller = the total power of the IH reel *L2B/( L1+L2B), where L1=L2B.

When the double-sided grill is used for single-panel grilling, as shown in FIG. 8, the switching element SW connects the inductors L1, L2A, and L2B in series. At this time, the equivalent power of the lower disk surface is L2A+L2B. +Lm, where Lm is the mutual inductance generated by the inductor L2A and the inductor L2B. Therefore, at this time, the power of the upper surface of the double-sided griller = The total power of the IH reel *L1/(L1+L2A+L2B+Lm), the power of the lower surface of the double-sided griller = The total power of the IH reel*(L2A+L2B+Lm)/(L1+L2A+L2B+Lm). Since L1=L2B, the power of the lower surface of the double-sided grill is inevitably higher than the power of the upper surface, and by changing the number of coils of the inductor L2B, the size of L2B and Lm can be changed, thereby changing the two discs. The ratio of power distribution between the two to meet the needs of a variety of cooking combinations, such as a plate of fire to cook quickly, while the other side of the plate is a small fire slow stew.

The above embodiment is only used to further illustrate an improved IH reel of the coil winding structure of the present invention, but the present invention is not limited to the embodiment, and any simple modification of the above embodiment according to the technical essence of the present invention is Equivalent changes and modifications fall within the scope of protection of the technical solutions of the present invention.

Industrial applicability

Since the first coil and the second coil are wound in a parallel staggered manner around the same planar disk surface of the IH reel body, when the two sets of coils are used in series or separately, a winding area is used in both cases. The same, so it is better in use; because the two sets of coils are parallel to each other, the two sets of coils have a strong mutual inductance, which makes the equivalent inductance value larger, which not only makes the two sets of coils appear. A large proportion of power distribution is more practical, and the mutual inductance between the two sets of coils allows the number of coils of each set of coils to be relatively reduced, thereby reducing the cost of the copper wire and reducing the strength of the winding operation.

Claims

An IH reel with improved coil winding structure includes an IH reel body, a first coil and a second coil; wherein the first coil and the second coil are distributed in a parallel staggered manner around the IH line The same planar disk surface of the disk body, and the first coil and the second coil are spaced apart from each other by a distance.
The coil winding structure improved IH reel according to claim 1, wherein at least one switching element is further coupled between the first coil and the second coil to switch the first coil and/or the first coil. Two coils.