CN201557279U

CN201557279U - Multi-layer excitation coil panel in induction cooker

Info

Publication number: CN201557279U
Application number: CN2009200580054U
Authority: CN
Inventors: 刘文亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-08
Filing date: 2009-06-08
Publication date: 2010-08-18
Anticipated expiration: 2019-06-08

Abstract

A multi-layer excitation coil panel in an induction cooker consists of an excitation coil support 4, a soft magnet 3, a multilayer coil 2 wound by enameled wire harness, a sleeve 5, a terminal and the like (as shown in drawing). Single-layered coils 1 wound by enameled wire harness are overlapped to form a multilayer coil 2 after being in series connection, current directions of the single-layer coils after being in series connection can be guaranteed to be uniform by difference of winding directions of the single-layer coils and difference of end points of the single-layer coils which are connected in series, thereby guaranteeing directions of magnetic lines of force to be consistent and leading the magnetic lines to overlap to be cancelled out mutually. The multilayer coil 2 can have two layers or more than two layers and is laid on the support 4, and the soft magnet 3 is mounted in the excitation coil support 4 of the induction cooker. By aid of the structure, the multilayer excitation coil panel is low in usage of enameled wire harness, low in cost and high in heat efficiency.

Description

Multilayer excitation coil plate in a kind of electromagnetic oven

Technical field

The utility model relates to particularly a kind of multilayer excitation coil plate of 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 has then stipulated to enclose around what, the coil outer ring is because diameter is greatly then used line length, 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 is descended; 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, long with line length during individual layer excitation coil plate coiling because coil diameter is big, the cost height; Because coil diameter is big, it is big to make matched line enclose the support of carrying effect, the cost height; Soft magnetic stripe will adapt to coil diameter, thus cause soft magnetic stripe length long, the cost height.

The utility model content

The purpose of this utility model provides a kind of Energy Efficiency Ratio than higher, reduces magnetic leakage, the electromagnetic oven excitation coil plate that cost is low.For achieving the above object, the utility model by the following technical solutions: the utility model constitutes (seeing accompanying drawing 2) by lattice coil, sleeve pipe, the terminal of coil bracket, soft magnet, the coiling of enamelled wire wire harness.After the flat a plurality of single layer coils around coiling of enamelled wire wire harness connected by serial arrangement, single layer coil was overlapped into a lattice coil up and down, single layer coil can be dredge around, also can be close around, also can be close dredging around combination.The lattice coil horizontal is on support, and soft magnet is installed in the electromagnetic oven magnet exciting coil disc carrier, with the multilayer excitation coil plate of sleeve pipe, terminal formation 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, and 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 adopt three layers of single layer coil or single layer coil constitutes more than three layers multilayer excitation coil plate then effect can be more obvious.

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 the utility model electromagnetic oven multilayer excitation coil plate decomposition texture schematic diagram

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

Among the figure:

1, single layer coil, 2, two lattice coils that single layer coil 1 is in series, 3, magnetic stripe, 4, support, 5, sleeve pipe, 6, terminal

Embodiment

The utility model 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 magnetic stripe in coil bracket 4, the support of packing into 3, two single layer coils 1, sleeve pipe 5, terminals 6.After one of single layer coil 1 coiling is finished, with second single layer coil of coiling, two central start connection or two the starting points series connection of coil periphery that the single layer coil series system is two single layer coils so again of first coil winding direction rightabout.Another connected mode is after one of single layer coil 1 coiling is finished, with second single layer coil of coiling, two the peripheral starting point series connection of central start connection another one single layer coil that the single layer coil series system is a single layer coil so again of first coil winding direction equidirectional.The sense of current that guarantees each single layer coil is consistent.

As shown in Figure 2, a plurality of single layer coil 1 polyphones, overlapping composition lattice coil 2, lattice coil 2 sticks on the winding bracket 4 that has been placed with magnetic stripe 3 again, puts on sleeve pipe, stamps terminal, thereby constitutes a multilayer excitation coil plate in the electromagnetic oven.

Single layer coil can be a densely packed coil, also can be to dredge wire spool, and also can be the coil of close thin combination.

Can there be object to separate between the single layer coil, also can not have object to separate.

Claims

1. the coil panel in the electromagnetic oven, constitute by coil, coil bracket, soft magnet, sleeve pipe, terminal, it is characterized in that: coil is by the coil polyphone of the flat a plurality of individual layers around coiling of enamel-cover wire harness, the overlapping lattice coil that forms up and down, single layer coil can be dredge around, also can be close around, also can be close, dredge around combination.