CN101541113A

CN101541113A - Multilayer excitation coil plate in electromagnetic oven

Info

Publication number: CN101541113A
Application number: CN200810029916A
Authority: CN
Inventors: 刘文亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-04
Filing date: 2008-08-04
Publication date: 2009-09-23
Also published as: CN201616925U

Abstract

The invention relates to a multilayer excitation coil plate in an electromagnetic oven, which consists of an excitation coil plate bracket 4, a soft magnet 3, a multilayer coil 2 wound by an enameled wire bundle, a sleeve 5, a terminal 6 and the like (see figure 2). A plurality of single-layer coils 1 evenly wound with the enameled wire bundle are connected in series, and then are overlapped into the multilayer coil 2. The single-layer coils connected in series ensure the consistency of current directions by the winding direction of the single-layer coils 1 or the difference of terminals of the single-layer coils 1 connected in series so as to ensure the directions of magnetic force lines are consistent and make the magnetic force lines mutually overlapped and not mutually balanced. The multilayer coil 2 can be two layers or more than two layers 2. The multilayer coil 2 is evenly arranged on the bracket 4, the soft magnet 3 is arranged in the excitation coil plate bracket 4 of the electromagnetic oven, current generates the alternating magnetic force lines through coils on the excitation coil plate, and the magnetic force lines act on a pot bottom to form a vortex and heat a pot so as to form the working state of the electromagnetic oven.

Description

Multilayer excitation coil plate in a kind of electromagnetic oven

Technical field

The present invention relates to the excitation coil plate that uses in a kind of electromagnetic oven

Background technology

Excitation coil plate in the current electromagnetic oven all adopts the coiling on same plane of enamel-cover wire harness, forms a single layer coil, forms an individual layer excitation coil plate with support, soft magnet, terminal, sleeve pipe etc. again.Adopt this kind individual layer excitation coil plate to have the shortcoming of following three aspects: the one, excitation coil plate is because be the individual layer coiling, the inductance value that reaches design then stipulates to enclose around what, line length is then used in the outer ring, then the resistance of self is big, cause electromagnetic oven excitation coil plate copper loss when work big, thereby the electromagnetic oven Energy Efficiency Ratio descend; The 2nd, the excitation coil plate winding diameter is bigger, after pot cooperates, under the certain situation of the bottom of a pan diameter, peripheral magnetic field can not act on the bottom of a pan fully, and leakage field can be more, causes the pollution certain to environment, simultaneously because leakage field is many, make electromagnetic oven do idle work, wasted the energy, reduced the Energy Efficiency Ratio of electromagnetic oven.It is obvious especially when the consumer works with smaller pot.The 3rd, during individual layer excitation coil plate coiling, the enamelled wire length that coiling is used is long, and support is big, and soft magnet length is long, the cost height.

Summary of the invention

The purpose of this invention is to provide a kind of Energy Efficiency Ratio than higher, reduce magnetic leakage, the electromagnetic oven excitation coil plate that cost is low.For achieving the above object, the present invention by the following technical solutions: the present invention constitutes (seeing accompanying drawing 2) by the lattice coil 2 of magnet exciting coil disc carrier 4, soft magnet 3, the coiling of enamelled wire wire harness, sleeve pipe 5, terminal 6 etc.After the flat single layer coil around coiling of enamelled wire wire harness connects by serial arrangement, a plurality of single layer coils are overlapped into a lattice coil, each single layer coil after the polyphone then guarantees sense of current unanimity by the coiling direction of single layer coil or the end points difference of polyphone single layer coil, thereby guarantee magnetic line of force direction unanimity, make magnetic line of force stack but not cancel each other mutually.Lattice coil can be two layers or more.The lattice coil horizontal is on support, soft magnet is installed in the electromagnetic oven magnet exciting coil disc carrier, and electric current produces the alternation magnetic line of force by the coil on the excitation coil plate, and the magnetic line of force acts on the bottom of a pan, form eddy current in the bottom of a pan and make the pan heating, thereby form the operating state of electromagnetic oven.

After adopting above technical scheme, this scheme is compared with the individual layer excitation coil plate and is had the following advantages:

The one, can effectively reduce the resistance of electromagnetic oven excitation coil plate, the copper loss when reducing electromagnetic oven work effectively improves the Energy Efficiency Ratio of electromagnetic oven.Because the main electric index of electromagnetic oven excitation coil plate is an inductance value, and the number of turns that obtains by coiling of inductance value determines, because the coil of individual layer excitation coil plate is with the plane coiling of the same center of circle, the diameter of second circle is greater than the diameter of first lap, the diameter of the 3rd circle is greater than the diameter of first lap second circle, by that analogy.And with the more electromagnetic oven individual layer excitation coil plate of present employing be example relatively: the individual layer excitation coil plate generally wants coiling 28 to enclose at present, the initial diameter of first lap is that 5cm, beam diameter are that 0.2cm is an example, coil winding 28 circles with wire harness length then are: with the 14.5th circle is average perimeter, 3.1416 * (5+0.2 * 2 * 14.5)=33.93cm, 28 circle individual layer excitation coil plates are grown=33.93 * 28=950.04cm with wire harness.And two-layer with multilayer excitation coil plate be example, because turn to the single layer coil polyphone of two 14 circles, the coil line length be two 14 circles use the line length sum, the usefulness line length of single 14 circles is: with the 7.5th circle is average length, 3.1416 * (5+0.2 * 2 * 7.5)=25.13cm, usefulness line length=25.13 * the 14=351.82cm of 14 circles, 28 circle multilayer excitation coil plates (two-layer) are grown=351.82 * 2=703.64cm with wire harness, 28 circle multilayer excitation coil plates (two-layer) are 703.64 ÷ 950.04=74.06%s with 28 circle individual layer excitation coil plates with the long ratio of wire harness with wire harness length under the contrast, and resistance is directly proportional with the length of line, copper loss and resistance are inversely proportional to, so 28 circle multilayer excitation coil plates (two-layer) the then copper loss on excitation coil plate have only 28 of present employing to enclose 74.06% of individual layer excitation coil plate copper loss, and copper loss is with the copper loss large percentage of excitation coil plate in the electromagnetic oven components and parts, and the copper loss that has reduced excitation coil plate has also promptly improved the Energy Efficiency Ratio of electromagnetic oven greatly.Same principle, as then effect can be more obvious to adopt multilayer excitation coil plate more than three layers or three layers.

The 2nd, can effectively reduce the magnetic dispersion of electromagnetic oven, improve the electromagnetic oven Energy Efficiency Ratio.During electromagnetic oven work is to send action of alternating magnetic field in the bottom of a pan by the excitation coil plate in the electromagnetic oven, make magnetic conduction the bottom of a pan produce eddy current and work, the excitation coil plate diameter is big, the magnetic field of being sent is then wide, it is then more then to spill the magnetic line of force that the bottom of a pan flogs a dead horse, formed environment pollution to a certain degree, also reduced the Energy Efficiency Ratio of electromagnetic oven.Then more obvious when particularly using the pan less than the electromagnetic oven excitation coil plate.Multilayer excitation coil plate then preferably resolves this problem.Because electromagnetic oven multilayer excitation coil plate diameter is about half of individual layer excitation coil plate diameter, then magnetic dispersion is still less to compare individual layer electromagnetic oven excitation coil plate, the user uses the chance of the pan littler than electromagnetic oven excitation coil plate also littler, so the electromagnetic oven Energy Efficiency Ratio is also higher, also more environmental protection.

The 3rd, can effectively reduce the cost of electromagnetic oven excitation coil plate.The electromagnetic oven multilayer excitation coil plate is because diameter is little, and is short with line length, reduced cost; The soft magnet that is put in equally in the support also can shorten length, and the magnet exciting coil disc carrier also can dwindle, and so whole excitation coil plate cost can reduce greatly.

Description of drawings

Fig. 1 is an electromagnetic oven multilayer excitation coil plate decomposition texture schematic diagram of the present invention

Fig. 2 is the schematic diagram after the electromagnetic oven multilayer excitation coil plate combination of the present invention

Embodiment

The invention will be further described for the contrast accompanying drawing below:

As shown in Figure 1, the electromagnetic oven multilayer excitation coil plate is made up of the soft magnet 3 in coil bracket 4, the support of packing into, a plurality of single layer coil 1, sleeve pipe 5, terminal 6.

As shown in Figure 2, a plurality of single layer coil 1 polyphones, overlapping composition lattice coil, the end points difference of coiling direction by single layer coil or polyphone single layer coil guarantees sense of current unanimity, thereby guarantees magnetic line of force direction unanimity, makes magnetic line of force stack but not cancel each other mutually.Lattice coil can be two layers or more.

Claims

1, multilayer excitation coil plate in a kind of electromagnetic oven, it is characterized in that lattice coil is by the coil polyphone of the flat a plurality of individual layers around coiling of enamel-cover wire harness, overlapping forming up and down, guarantee sense of current unanimity by the end points difference of polyphone single layer coil or the coiling direction difference of single layer coil, thereby guarantee magnetic line of force direction unanimity, make magnetic line of force stack but not cancel each other mutually.Overlap lattice coil up and down after the single layer coil polyphone, lattice coil can be two layers or more.Lattice coil with under coil bracket, soft magnet, sleeve pipe, terminal etc. constitute the lattice coil dish of electromagnetic oven.