CN104703313A - Cycle-based inverted winding type electromagnetic heating wire coil and induction cooker - Google Patents

Abstract

The invention discloses a cycle-based inverted winding type electromagnetic heating wire coil and an induction cooker. The electromagnetic heating wire coil comprises a rack and a coil winding; the rack comprises a plurality of concentric annular coiling grooves, wire feeding grooves, wire discharging grooves and reversing reducing grooves; the coil winding coils into the coiling grooves, wherein the coil winding is reduced in the reversing reducing grooves and then returns to enter the adjacent winding grooves to be reversely wound after coiling in a plurality of layers in the coiling grooves. The induction cooker adopting the electromagnetic heating wire coil can avoid the problem that the magnetic fluxes generated nearby by a coil between adjacent loops cancel each other out in the traditional one-way winding method; therefore, the utilization rate of the magnetic flux generated by the coil can be increased, and uniform heating can be achieved.

Description

An electromagnetic heating coil and an electromagnetic cooker that are reversely wound one by one

technical field

The technical solution relates to the field of small household electrical appliances, in particular to an electromagnetic heating reel and an induction cooker which are reversely wound round by round.

Background technique

The electromagnetic coil is the core component of the induction cooker. The high-efficiency and high-performance electromagnetic coil has become the key to the development of the induction cooker technology. In the prior art, the coils of the electromagnetic coil are generally installed on the coil rack by unidirectional winding. , but the magnetic flux generated by each turn of the unidirectional coil is partially offset, resulting in low flux utilization and uneven heating. The typical phenomenon is that when using an induction cooker to cook food with little water, such as fried vegetables, The local temperature in the small area in the center of the electromagnetic cooker is too high, and the surrounding temperature is low, so that the vegetables are easily partially burnt black and burnt, and the cooking effect is obviously not as good as that of the gas stove; The wire (one strand or multiple strands) is wound in a single direction clockwise (or anticlockwise) from the inside to the outside to form a multi-turn coil.

Contents of the invention

The technical problem to be solved by this technical solution is to overcome the above-mentioned problems in the prior art and provide an electromagnetic heating coil and an induction cooker with high magnetic flux utilization rate and uniform heating.

In order to solve the above-mentioned technical problems, the technical solution adopted in this patent application is: an electromagnetic heating reel that is reversely wound round by turn, including a reel frame and a coil winding, and the reel frame includes several concentrically arranged circles Ring-shaped winding slots of equal width to each other, adjacent winding slots are separated by circular ribs, and all annular ribs that separate the winding slots are of equal width in a certain radial direction The gaps, so that all the gaps are on the same straight line segment, these gaps are called reversing and reducing grooves, and the reversing and reducing grooves make the winding grooves communicate with each other; the wire reel frame also includes the incoming wire groove and the outgoing wire The wire inlet groove is arranged on the inner peripheral side of the innermost surrounding wire groove of the wire tray, and the wire outlet groove is arranged on the outer peripheral side of the outermost surrounding wire groove of the wire tray. The coil windings are wound in the winding slots, and are wound in multiple layers in the same winding slots, and the coil windings on the top layer are reduced in diameter and turned around at the reversing and reducing slots to the adjacent windings. Lower coil winding in wire slot.

The ring-shaped winding slots are arranged at equal or unequal intervals as required, and the ring-shaped retaining ribs are of equal or unequal width.

This technical solution can also be further optimized through the following technical measures:

The wire reel frame is provided with a magnetic guide strip loaded from the back side of the wire winding groove.

Compared with the prior art, this technical solution has the following beneficial effects:

In this technical solution, several concentric ring-shaped winding slots are arranged on the coil frame, so that the diameters of the coil windings located in the same circle in the winding slots are the same, and the diameter of the coil windings is reduced and reversed at the reversing and reducing slots. Direct winding can avoid the problem caused by the traditional unidirectional winding method that the magnetic flux generated by the adjacent turns of the coil cancels each other, can improve the utilization rate of the magnetic flux generated by the coil, and make the flat bottom of the pan Two opposite concentric current loops with the same number of coil turns are generated in the corresponding circular area close to the coil winding, and the current magnitudes of all the current loops are basically the same, so that the bottom of the pan is evenly heated, and the coil The top winding of the winding is turned around and transformed to the adjacent winding slot through the reversing slot to become the lower winding, and the winding process of the multi-layer coil is completed one by one. This winding method is simple, the processing procedure is simple, and the cost is low. .

This technical solution also provides an induction cooker with the above-mentioned electromagnetic heating reel that is reversely wound round by turn: it includes a reel frame with a concentric circular winding groove, a reversing and reducing groove, and the coil winding is wound The electromagnetic heating wire reel is coiled sequentially in the wire groove and is wound at the reversing diameter reducing groove and reversely wound, which improves the magnetic flux utilization rate of the induction cooker and achieves a uniform heating effect. The electromagnetic heating coil with high magnetic flux utilization rate can reduce the number of coil turns and the use of metal wires, thereby reducing the production cost of the induction cooker.

Description of drawings

Figure 1 is a structural schematic diagram of an electromagnetic heating reel that is reversely wound round by round according to the technical solution.

Figure 2 is a schematic diagram of the structure of the cable rack in Figure 1.

Fig. 3 is a schematic diagram of a current loop excited on a circular pan by an electromagnetic cooker adopting the technical solution of an electromagnetic heating reel coil reversely wound round by turn.

Main component number:

Electromagnetic heating wire reel 100 wire reel rack 1

Inlet trough 11 Outlet trough 12

Rib 13 Coil Winding 2

Winding trough 3 3 Reversing diameter reducing trough 4

Magnetic strip 5.

Detailed ways

Further illustrate the technical scheme of this patent below in conjunction with accompanying drawing.

As shown in Figure 1 and Figure 2, an electromagnetic heating reel of an induction cooker is reversely wound round by turn: it includes a wire reel frame 1 and a coil winding 2, and the coil winding 2 is installed on the wire reel frame 1, and the wire reel frame 1. It includes a number of concentrically arranged annular winding slots 3 of equal width. Adjacent winding slots 3 are separated by annular retaining ribs 13, and all the winding slots 3 are separated in a radial direction. The ring-shaped retaining ribs 13 of the function are opened with gaps of equal width, so that all the gaps are on the same straight line segment. These gaps are called the reversing diameter-reducing grooves 4, and the reversing diameter-reducing grooves 4 make the winding grooves 3 communicate with each other. The cable tray 1 also includes a wire inlet slot 11 and an outlet slot 12, the inlet slot 11 is arranged on the innermost side of the wire tray 1 around the inner peripheral side of the wire slot 3, and the outlet slot 12 is arranged on the outermost side of the wire tray 1 Around the outer peripheral side of the trunking 3. The coil winding 2 is wound in the winding groove 3, and the specific winding method is: the coil winding 2 is introduced from the wire inlet groove 11, and starts to be carried out along the innermost winding groove 3 in a clockwise (or anti-clockwise) direction. Extend winding, and wind 2 to 3 layers, first wind the bottom layer, then wind the middle layer (if there are 3 layers), and finally wind the top layer, when winding the top layer to the reversing diameter reduction slot 4, change the diameter and turn around Reverse and enter the adjacent winding slot 3, extend and wind in the opposite clock direction before turning around, first wind the bottom layer, then wind the middle layer (if there are 3 layers), and finally wind the top layer, when winding the top layer again When reaching the reversing diameter reduction slot 4, change the diameter and turn around and change the direction again. This winding process is repeated until the coil winding 2 finishes winding 2 to 3 layers in the outermost winding slot 3 and reaches the outlet slot 12. 2 lead out, the winding process ends.

The annular winding slots 3 are set at equal or unequal intervals as required, and the width of each ring retaining rib 13 can be equal or unequal and set as required.

This technical solution can also be further optimized through the following technical measures:

The electromagnetic heating reel 100 is provided with a magnetic strip 5 loaded into the reel frame 1 from the back side of the winding groove 3.

An electromagnetic cooker adopts the electromagnetic heating reel which is reversely wound round by round according to the specific embodiment.

As shown in Figure 3, the induction cooker that adopts a kind of reversely wound electromagnetic heating coil of this technical scheme can excite many concentric current rings 6 and 7 on the circular pan, wherein there are coil windings 2 The corresponding ring-shaped area will produce two opposite current rings 6 with the same number of coil turns, and the current magnitudes of all the current rings 6 are basically the same, so that the bottom of the pot is evenly heated; The central part of the pan of the winding 2 will generate a current loop 7 whose current direction is consistent with that of the innermost loop of the above-mentioned current loop 6 .

Claims (3)

1. An electromagnetic heating reel that is reversely wound round by turn, including a reel frame 1 and a coil winding 2, the coil winding 2 is installed on the reel frame 1, and the reel frame 1 includes a number of concentrically arranged circles of equal width Annular winding slots 3, adjacent winding slots 3 are separated by annular ribs 13, and all the annular ribs 13 that separate the winding slots 3 are of equal width in a radial direction The gaps, so that all the gaps are on the same straight line segment, these gaps are called the reversing diameter reducing groove 4, and the reversing reducing diameter groove 4 makes the winding grooves 3 communicate with each other; the wire reel rack 1 also includes the wire inlet groove 11 And outlet slot 12, described inlet slot 11 is arranged on the inner peripheral side of the innermost surrounding wire slot 3 of the wire tray 1, and the outlet slot 12 is arranged on the outer peripheral side of the outermost surrounding wire slot 3 of the online tray 1; it is characterized in that : The coil winding 2 is wound in the winding groove 3, specifically: the coil winding 2 is introduced from the wire inlet groove 11, and starts to extend and wind along the innermost winding groove 3 in a clockwise (or anticlockwise) direction Make, and wind 2 to 3 layers, first wind the bottom layer, then wind the middle layer (if there are 3 layers), and finally wind the top layer, when the top layer is wound to the reversing groove 4, change the diameter and turn around and change the direction Enter the adjacent winding slot 3, and perform extended winding in the opposite clock direction before turning around, first wind the bottom layer, then wind the middle layer (if there are 3 layers), and finally wind the top layer, when winding the top layer again When going to the reducing slot 4, the diameter is changed again and the direction is turned around. This winding process is repeated until the coil winding 2 is wound in the outermost coil winding slot 3 for 2 to 3 layers and reaches the outlet slot 12, and the coil winding 2 is drawn out. . 2. An electromagnetic heating reel with high magnetic flux utilization rate and uniform heating according to claim 1, characterized in that: the annular winding slots 3 are set at equal intervals or unequal intervals as required , the width of each circle retaining rib 13 is equal or not equal, set as required. 3. An induction cooker, characterized in that: it comprises the electromagnetic heating reel that is reversely wound turn by turn according to claims 1 to 2.