CN202873105U

CN202873105U - Concentric circular heating coil disk

Info

Publication number: CN202873105U
Application number: CN201220490460.3U
Authority: CN
Inventors: 万宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-09-24
Filing date: 2012-09-24
Publication date: 2013-04-10
Anticipated expiration: 2022-09-24

Abstract

A concentric circular heating coil disk comprises a coil disk bracket, and a winding groove arranged on the top of the coil disk bracket, wherein a heating coil is wound on the winding groove. The concentric circular heating coil disk is characterized in that: the winding groove is formed into the concentric circular structure, the density change of the winding groove between inner, outer rings of the coil disk bracket is in the involute type; the heating coil is skipped and wound on the winding groove of the adjacent ring from the winding groove of one ring, and wound in the winding groove in the concentric circular shape. The density of the winding grooves between the inner, outer rings of the coil disk bracket is gradually reduced and then increased from the inner ring to the outer ring of the coil disk bracket. The clearance between the inner, outer rings of the winding groove on the coil disk bracket is adjusted, and the heating coil is wound in the winding groove in the concentric circular shape, therefore the magnetic field generated by the heating coil on the coil disk bracket is uniformly distributed from the center of a stove to the periphery thereof, thus the bottom of a pan is uniformly heated, and an electromagnetic oven is more suitable for frying foods.

Description

The concentric circles heater coil disc

Technical field

The utility model relates to a kind of coil panel, particularly a kind of concentric circles heater coil disc.

Background technology

Electromagnetic oven is a kind of kitchen range by the electromagnetic field heat food.It produces alternating magnetic field by alternating current by coil, and the irony pan on the boiler face is sensed magnetic field, thereby produces eddy current, by specific control, transforms out a large amount of heat energy on demand and directly makes a pot body generate heat rapidly again, reaches the purpose of heat food.Traditional electromagnetic oven since the coil of its coil panel evenly around thereon, so the magnetic field intensity of its generation is the field regions of an even intensity from the center to the periphery.Because the heat radiation of pan centre is significantly less than the pan periphery, so the temperature in pan centre is much higher than the temperature of pan periphery.Because the inequality of being heated, so electromagnetic oven generally is not suitable for use in frying in shallow oil cooked food, and the scope of application of electromagnetic oven is restricted.Chinese patent literature CN2634794 discloses a kind of electromagnetic oven heating spool rest on August 18th, 2004, be made of heater wire one circle circle coiling, it is characterized in that the mid diameter partial line of heating spool rest and the gap of line are 1mm-3mm.Described heating spool rest can be the planar line dish, also can be the cambered surface drum.It is said, it is by expressing the uniformity of controlling magnetic field intensity with the density of the coiling of drum, make the magnetic field intensity of whole drum more even in the different-diameter position, but the coil density degree of this structure is not complete gradual change type, cause coil winding to get not and justify (particularly coil divides than part of rarefaction), thereby can affect the uniformity that it produces magnetic field.Therefore, be necessary to be further improved.

The utility model content

The purpose of this utility model aims to provide the concentric circles heater coil disc that a kind of simplicity of design bottom reasonable, that make heated pot is heated evenly, to overcome weak point of the prior art.

A kind of concentric circles heater coil disc by this purpose design, comprise coil bracket, the top of coil bracket is provided with winding slot, heater coil is around thereon, its architectural feature is that all winding slots surround concentric structure, and the variable density of the winding slot between the coil bracket Internal and external cycle is gradual change type; Heater coil is jumped around to the winding slot of an adjacent circle from the winding slot of a circle, is the concentric circles form in winding slot.

The density of the winding slot between the described coil bracket Internal and external cycle, from the inner ring of coil bracket to the outer ring, it is close that the arrangement of winding slot becomes from spare to dense again.

The spacing of described heater coil radially adjoining two circles, from the inner ring of coil bracket to the outer ring, spacing is ascending to diminish again.

The spacing of described heater coil radially adjoining two circles is 0-8mm, and the number of turns of described heater coil is the 8-16 circle.

When described heater coil was N layer coil disk structure, heater coil was jumped around enclose undermost starting point to next at current circle coiling N layer and after getting back to starting point, and the Multi-layer warming coil of every circle is in series, and wherein N is 1-3.

The rare close spacing equation of described heater coil coiling, 1/2 of the live width of heater coil is defined as a, the radius of heater coil is defined as b, the interior pore radius of heater coil is defined as c, to cartesian coordinate system, the input parameter equation is according to t(from 0 to 1 simultaneously) to the helix terminal point to the center of circle apart from r, anglec of rotation theta, the height z of helix rotation; There is the parametric equation of inner vortex to be: r=a*t*t*t+c, theta=t* (n*360), z=0; The parametric equation of outer vortex is: r=b-a*t*t*t, theta=t* (n*360), z=0; Described heater coil is the synthetic form of inside and outside bifilar helix, also is applicable to the concentric circles form.

The both sides, top of the bottom of described coil bracket and winding slot are all one-body molded to have several tips protruding.The diameter of described coil bracket is 120-240mm.

The utility model is by adjusting the Internal and external cycle crack of winding slot on the coil bracket, simultaneously heater coil is the concentric circles form in winding slot, thereby the central authorities from cooking stove are evenly distributed to its periphery in magnetic field that coil bracket produces to make heater coil, the bottom of a pan of heated pot is heated evenly, electromagnetic oven is more suitable for as frying in shallow oil cooked food.

Description of drawings

Fig. 1 is the structural representation of the utility model one embodiment;

Fig. 2 is the other direction structural representation of Fig. 1;

Fig. 3 is A place structure for amplifying schematic diagram among Fig. 1;

Fig. 4 is B place structure for amplifying schematic diagram among Fig. 2.

Among the figure: 1 is coil bracket, and 2 is heater coil, 3 winding slots, and 4 is the tip projection.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.

Referring to Fig. 1-4, a kind of concentric circles heater coil disc comprises coil bracket 1, and the top of coil bracket 1 is provided with winding slot 3, and heater wire 2 circles are around thereon, and all winding slots 3 surround concentric structure.The density of the winding slot 3 between coil bracket 1 Internal and external cycle, from the inner ring of coil bracket 1 to the outer ring, it is close that the arrangement of winding slot 3 becomes from spare to dense again.The spacing of heater coil 2 radially adjoinings two circle, from the inner ring of coil bracket 1 to the outer ring, spacing is ascending to diminish again.Heater coil 2 is layer coil disk structure, is the concentric circles form in winding slot 3.Heater coil 2 is jumped around enclose undermost starting point to next after 2 layers of current circle coilings and getting back to starting point, and 2 layers of heater coil 2 of every circle are in series.The both sides, top of the bottom of coil bracket 1 and winding slot 3 are all one-body molded several tip projections 4.The tip projection 4 that places both sides, winding slot 3 top is after by heat treatment, and heater coil 2 and the ferrocart core of winding pressed in distortion, and fixedly heater coil 2 and ferrocart core need not add glue again and fix, and are beneficial to processing.

The rare close spacing equation of heater coil 2 coilings, 1/2 of the live width of heater coil 2 is defined as a, the radius of heater coil 2 is defined as b, the interior pore radius of heater coil 2 is defined as c, to cartesian coordinate system, the input parameter equation is according to t(from 0 to 1 simultaneously) to the helix terminal point to the center of circle apart from r, anglec of rotation theta, the height z of helix rotation; There is the parametric equation of inner vortex to be: r=a*t*t*t+c, theta=t* (n*360), z=0; The parametric equation of outer vortex is: r=b-a*t*t*t, theta=t* (n*360), z=0; Heater coil 2 is the synthetic form of inside and outside bifilar helix, also is applicable to the concentric circles form.

In the present embodiment, the diameter of coil bracket 1 is 171mm, and totally 13 circles have reduced cost of material.Heater coil 2 is from the inner ring to the outer ring, the ascending more descending concentric circles form of its spacing.Pass through aforesaid equation, we obtain lower column data: from inside to outside, 1st, 2 circle spacing minimums are 0-2mm, 2nd, 3 circle spacings are 1.2 ± 1.2mm, 3rd, 4 circle spacings are 2.2 ± 2mm, 4th, 5 circle spacings are 3.3 ± 2mm, 5th, 6 circle spacings are 4.5 ± 2mm, 6th, 7 circle spacing maximum spacings are 6 ± 2mm, and the 7th, 8 circle spacings are 6 ± 2mm, and the 8th, 9 circle spacings are 4.5 ± 2mm, 9th, 10 circle spacings are 3.3 ± 2mm, 10th, 11 circle spacings are 2.2 ± 2mm, and the 11st, 12 circle spacings are 1.2 ± 1.2mm, and the 12nd, 13 circle spacings are 0-2mm.

The utility model is not only limited to above-mentioned example, and in essential scope of the present utility model, the variation of making, remodeling, increase or replacement also belong to protection range of the present utility model.

Claims

1. concentric circles heater coil disc, comprise coil bracket (1), the top of coil bracket is provided with winding slot (3), heater coil (2) is around thereon, it is characterized in that all winding slots surround concentric structure, the variable density of the winding slot between the coil bracket Internal and external cycle is gradual change type; Heater coil is jumped around to the winding slot of an adjacent circle from the winding slot of a circle, is the concentric circles form in winding slot.

2. concentric circles heater coil disc according to claim 1 is characterized in that the density of the winding slot (3) between described coil bracket (1) Internal and external cycle, and from the inner ring of coil bracket to the outer ring, it is close that the arrangement of winding slot becomes from spare to dense again.

3. concentric circles heater coil disc according to claim 2 is characterized in that the spacing of described heater coil (2) radially adjoining two circles, and from the inner ring of coil bracket (1) to the outer ring, spacing is ascending to diminish again.

4. each described concentric circles heater coil disc is characterized in that the spacing of described heater coil (2) radially adjoining two circles is 0-8mm according to claim 1-3, and the number of turns of described heater coil is the 8-16 circle.

5. concentric circles heater coil disc according to claim 4, when it is characterized in that described heater coil (2) for N layer coil disk structure, heater coil is at current circle coiling N layer and after getting back to starting point, jumping is around enclose undermost starting point to next, the Multi-layer warming coil of every circle is in series, and wherein N is 1-3.

6. concentric circles heater coil disc according to claim 5, the rare close spacing equation that it is characterized in that described heater coil (2) coiling, 1/2 of the live width of heater coil is defined as a, the radius of heater coil is defined as b, and the interior pore radius of heater coil is defined as c, simultaneously to cartesian coordinate system, the input parameter equation, according to t(from 0 to 1) to the helix terminal point to the center of circle apart from r, anglec of rotation theta, the height z of helix rotation; There is the parametric equation of interior heater coil disc (2.1) to be: r=a*t*t*t+c, theta=t* (n*360), z=0; The parametric equation of external heat coil panel (2.2) is: r=b-a*t*t*t, theta=t* (n*360), z=0; Described heater coil is the synthetic form of inside and outside bifilar helix, also is applicable to the concentric circles form.

7. concentric circles heater coil disc according to claim 5, the both sides, top that it is characterized in that the bottom of described coil bracket (1) and winding slot (3) are all one-body molded several tips projections (4).

8. concentric circles heater coil disc according to claim 7, the diameter that it is characterized in that described coil bracket (1) is 120-240mm.