CN201436824U - Electromagnetic wire coil and electromagnetic range using the wire coil - Google Patents

Electromagnetic wire coil and electromagnetic range using the wire coil Download PDF

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Publication number
CN201436824U
CN201436824U CN2009200297671U CN200920029767U CN201436824U CN 201436824 U CN201436824 U CN 201436824U CN 2009200297671 U CN2009200297671 U CN 2009200297671U CN 200920029767 U CN200920029767 U CN 200920029767U CN 201436824 U CN201436824 U CN 201436824U
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CN
China
Prior art keywords
magnetic stripe
coil
drum
electromagnetic
magnetic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2009200297671U
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Chinese (zh)
Inventor
朱泽春
乔中义
管兴勇
田海峰
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Hangzhou Joyoung Household Electrical Appliances Co Ltd
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Hangzhou Joyoung Household Electrical Appliances Co Ltd
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Publication date
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Priority to CN2009200297671U priority Critical patent/CN201436824U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

The utility model discloses an electromagnetic wire coil, comprising a coil, a magnetic strip and a wire coil support, wherein the magnetic strip covered by the coil is installed on the wire coil support, the two ends of the magnetic strip have different width, the width of one end of the magnetic strip in the inner side of the wire coil support is smaller than that in external side of the wire coil support, and the at least one end of the magnetic strip is arranged with a corner for enveloping the coil. The utility model further provides an electromagnetic range using the electromagnetic wire coil. Compared with the prior art, the corners of the utility model form a closed magnetic circuit at the two ends of the magnetic strip, which can well concentrate the majority of divergent magnetic force lines at the bottom of the heated objects, can furthest achieve the purpose for reducing the electromagnetic interference of the electromagnetic oven, and the electromagnetic range has higher thermal efficiency and more uniform because that the divergent magnetic force lines are concentrated at the bottom of the heated objects.

Description

A kind of electromagnetism drum and adopt the electromagnetic stove of this kind drum
Technical field
The utility model relates to the electromagnetic stove technical field, particularly a kind of electromagnetism drum and adopt the electromagnetic stove of this kind drum.
Background technology
Electromagnetic stove is the electroheat equipment that the eddy current that utilizes electromagnetic induction principle to produce heats pan, and its heater is the electromagnetism drum, and described electromagnetism drum is made of coil, drum support, magnetic stripe.The magnetic stripe of existing electromagnetism drum generally is strip plane magnetic stripe, radially distributes to be embedded in the drum support, and coil places above the drum support.Use the electromagnetism drum of this kind magnetic stripe, its magnetic line of force is relatively dispersed, and magnetic dispersion is bigger, so the electromagnetic interference that the electromagnetism drum produces to external world is bigger, and is also bigger to the interference of himself main control board.In addition, because its magnetic line of force is relatively dispersed, the magnetic line of force that passes coil is more, and owing to the skin effect of high frequency magnetic field, coil can produce big heat simultaneously, can cause the machine intimate temperature rise to improve on the one hand, influence the useful life and the reliability of machinery equipment, because coil itself produces heat, own loss is bigger on the other hand, therefore use the efficiency loss of electromagnetic stove of this kind electromagnetism drum bigger, the heat efficiency is lower.And because magnetic field is at pan bottom position skewness, more concentrated, so heating region is more concentrated, is burned easily.
In order to solve the heat efficiency problem on the low side that causes owing to magnetic line of force skewness, and, because the problem that master control borad is disturbed that the shielding deficiency in magnetic field, drum below is caused, China's utility model patent CN201000119Y number discloses " a kind of coil disc of electric stove " on January 2nd, 2008, comprise the coil of enamelled wire coiling, at least three soft magnetic stripes and drum support, soft magnetic stripe is located in the drum support, it is characterized in that, soft magnetic stripe is fan-shaped or trapezoidal.Such scheme has shielded the loss of the drum below magnetic line of force to a certain extent, prevented the electromagnetic interference of alternating magnetic field to the electromagnetic oven master control borad, the magnetic line of force is dispersed the magnetic dispersion that causes and the problem of electromagnetic interference outside electromagnetic oven but it still exists, and the electromagnetic interference that its magnetic dispersion produces to external world is still very big.In addition, still have the problem of coil temperature rise equally, the efficiency loss is bigger, and the heat efficiency is lower.And magnetic field is inhomogeneous, more concentrated in the position distribution of pan bottom, and heating region is more concentrated, easily is burned.
Summary of the invention
The purpose of this utility model is to provide that a kind of magnetic dispersion is few, magnetic radiation is little, the heat efficiency is high, the electromagnetism drum of homogeneous heating, to overcome deficiency of the prior art.
To achieve these goals, the utility model discloses a kind of electromagnetism drum, comprise coil, magnetic stripe, drum support, described coil covers magnetic stripe and is installed on the drum support, the not wide setting in described magnetic stripe two ends, magnetic stripe is positioned at an end width of drum support inboard less than the width that is positioned at the drum support outside, and at least one end of described magnetic stripe is provided with the turning of envelope coil.
Described magnetic stripe is the U type along electromagnetic wire disc radial cross section.
Described turning is vertical with coil plane.
The described magnetic stripe surface of coil dorsad is provided with at least one fin, and described fin is provided with perpendicular to electromagnetism drum radial direction.
The described magnetic stripe surface of coil dorsad is provided with at least one fin, described fin and the angled setting of electromagnetism drum radial direction.
Another purpose of the present utility model is to provide a kind of electromagnetic stove.
To achieve these goals, electromagnetic stove of the present utility model, comprise electromagnetism drum, loam cake, lower cover, porcelain plate, described electromagnetism drum comprises coil, magnetic stripe, drum support, described coil covers magnetic stripe and is installed on the drum support, the not wide setting in described magnetic stripe two ends, magnetic stripe are positioned at an end width of drum support inboard less than the width that is positioned at the drum support outside, and at least one end of described magnetic stripe is provided with the turning of envelope coil.
Described magnetic stripe is the U type along electromagnetic wire disc radial cross section.
Described turning is vertical with coil plane.
The described magnetic stripe surface of coil dorsad is provided with at least one fin, and described fin is provided with perpendicular to electromagnetism drum radial direction.
The described magnetic stripe surface of coil dorsad is provided with at least one fin, described fin and the angled setting of electromagnetism drum radial direction.
The existing bigger main cause of electromagnetic oven electromagnetic interference is that magnetic stripe can not well converge at the magnetic line of force heating object bottom, and the magnetic line of force of generation is scattered in around the electromagnetic stove.The utility model is provided with the turning of envelope coil on magnetic stripe, described turning is arranged at the magnetic stripe surface that contacts with coil, and coil is installed in the zone that turning and magnetic stripe surround.Compared to prior art, turning described in the utility model forms closed magnetism guiding access at the magnetic stripe two ends, the magnetic line of force that can well major part be dispersed converges at the bottom of heating object, reduce magnetic dispersion, reach the purpose that reduces the electromagnetic oven electromagnetic interference to greatest extent, and because the magnetic line of force that disperses is converged to the heating object bottom, the higher heating of its heat efficiency is more even.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the decomposing schematic representation of the utility model embodiment electromagnetism drum.
Fig. 2 is the vertical view of magnetic stripe among the utility model first embodiment.
Fig. 3 is the front view of magnetic stripe among the utility model first embodiment.
Fig. 4 is the schematic perspective view of magnetic stripe among the utility model second embodiment.
Fig. 5 is the front view of magnetic stripe among the utility model second embodiment.
Fig. 6 is the vertical view of magnetic stripe among the utility model second embodiment.
Fig. 7 is the vertical view of magnetic stripe among the utility model the 3rd embodiment.
Fig. 8 is the electromagnetic stove structural representation of the utility model embodiment.
Among the figure: 1, coil; 2, magnetic stripe; 3, drum support; 21, turning; 22, fin; 4, fan; 5, lower cover; 6, master control borad; 7, porcelain plate; 8, loam cake.
Embodiment
Further specify the technical solution of the utility model below in conjunction with drawings and Examples.
As shown in Figure 1 to Figure 3, electromagnetism drum of the present utility model comprises coil 1, magnetic stripe 2, drum support 3, described magnetic stripe 2 is that two ends are not wide, when promptly being installed on the drum support, magnetic stripe is positioned at an end width of drum support inboard less than the width that is positioned at the drum support outside, described magnetic stripe 2 edges at two ends are provided with the turning 21 of envelope coil 1, and described turning 21 is arranged at magnetic stripe 2 surfaces that contact with coil 1, and coil 1 is installed in the zone that turning 21 and magnetic stripe 2 surround.Described coil 1 covers magnetic stripe 2 and is fixed on the drum support 3, and described turning 21 end faces are towards porcelain plate direction and vertical with coil 1 plane, and described magnetic stripe 2 is the U type along electromagnetic wire disc radial cross section.
Described turning 21 can form a closed magnetism guiding access at magnetic stripe 2 two ends, and the magnetic line of force that disperses is converged at the heating object bottom, reduces electromagnetic leakage, reduces the magnetic radiation electromagnetic interference of environment to external world.Also can only turning 21 be set, can reach the effect that reduces electromagnetic leakage equally at magnetic stripe one end.Simultaneously turning 21 is set, can reaches the effect of the minimizing magnetic dispersion of optimum, reach the purpose that reduces the electromagnetic oven electromagnetic interference to greatest extent, and because the magnetic line of force that will disperse converges to the heating object bottom, the higher heating of its heat efficiency is more even at magnetic stripe 2 two ends.Can one-body moldedly make with magnetic stripe at described turning 21, also can adopt at least two blocks of permeability magnetic materials to combine.
Be provided with fin 22 in the surface of coil 1 dorsad at magnetic stripe 2, described fin 22 is provided with perpendicular to electromagnetism drum radial direction.Certainly, in other embodiments, fin 22 can with electromagnetism drum radial direction at an angle, as long as fin 22 is suitable with magnetic stripe 2 width along the projection of electromagnetism drum radial direction, just can effectively prevent magnetic dispersion.Certainly, fin 22 also can be realized to a certain extent antimagnetic leakage along the projected length of electromagnetism drum radial direction less than magnetic stripe 2 width, but its effect is not as the foregoing description.Described fin 22 is shaped as strip, and fin 22 can be designed to semicolumn strip or square strip, and the height of fin is at least 0.1mm, described fin 22 and magnetic stripe 2 one-body molded making.
Because due to the working principle of induction cooker, the magnetic field that coil 1 produces has part and leaks, after adding magnetic stripe 2, most of leakage field can enter magnetic stripe 2, and gets back to the heating object bottom along magnetic stripe 2.But, also have the part leakage field pasting magnetic stripe 2 bottoms and let out, therefore, the thickness of magnet 2 is big more, and the effect of antimagnetic leakage can be good more.If but magnet 2 is too thick, not only cost improves, and the electromagnetic oven overall weight is increased, and is unfavorable for suitability for industrialized production, also is unfavorable for the lighting development of small household electrical appliance.Therefore, the utility model adopts the mode of setting up fin on magnetic stripe 2 to prevent magnetic dispersion.When the bottom surface that magnetic stripe 2 deviates from coil 1 is provided with fin, pasting most of magnetic field of leaking magnetic stripe 2 bottoms when running into fin 1, will enter fin 1 and converge in the magnetic stripe 2 and go, so just further reduced magnetic dispersion.Described fin can only be provided with one.
As shown in Figure 2, be the schematic diagram of the utility model first embodiment magnetic stripe.Magnetic stripe 2 two ends are not wide, and when promptly being installed on the drum support, an end magnetic stripe width that is positioned at drum support inboard is less than the magnetic stripe width that is positioned at the drum support outside, and described magnetic stripe can be trapezoidal.
To shown in Figure 6, be the schematic diagram of the utility model second embodiment magnetic stripe as Fig. 4.Described magnetic stripe 2 is trapezoidal distortion, because the restriction of magnetic stripe manufacture craft, it is higher to make trapezoidal magnetic stripe technology difficulty, and consequent leftover bits can be more, so the magnetic stripe of present embodiment is set to rectangle in trapezoidal bottom.As shown in Fig. 6 vertical view, magnetic stripe is set to trapezoidal and combination rectangle.
As shown in Figure 7, be the magnetic stripe schematic diagram of the utility model the 3rd embodiment, the difference of the present embodiment and the first embodiment magnetic stripe is that described magnetic stripe is fan-shaped, and other settings are identical with first embodiment, repeat no more.
As shown in Figure 8, for adopting the electromagnetic stove schematic diagram of the utility model electromagnetism drum.Described electromagnetic stove comprises the electromagnetism drum, described electromagnetism drum comprises coil 1, magnetic stripe 2, drum support 3, described electromagnetic stove also comprises fan 4, lower cover 5, master control borad 6, porcelain plate 7, loam cake 8, and described porcelain plate 7 is installed on the loam cake 8, and electromagnetism drum, master control borad 6 and fan 4 are installed on the lower cover 8.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.

Claims (10)

1. electromagnetism drum, comprise coil, magnetic stripe, drum support, described coil covers magnetic stripe and is installed on the drum support, the not wide setting in described magnetic stripe two ends, magnetic stripe is positioned at an end width of drum support inboard less than the width that is positioned at the drum support outside, it is characterized in that at least one end of described magnetic stripe is provided with the turning of envelope coil.
2. electromagnetism drum as claimed in claim 1 is characterized in that, described magnetic stripe is the U type along electromagnetic wire disc radial cross section.
3. electromagnetism drum as claimed in claim 2 is characterized in that described turning is vertical with coil plane.
4. as the described arbitrary electromagnetism drum of claim 1 to 3, it is characterized in that the described magnetic stripe surface of coil dorsad is provided with at least one fin, described fin is provided with perpendicular to electromagnetism drum radial direction.
5. as the described arbitrary electromagnetism drum of claim 1 to 3, it is characterized in that the described magnetic stripe surface of coil dorsad is provided with at least one fin, described fin and the angled setting of electromagnetism drum radial direction.
6. electromagnetic stove, comprise electromagnetism drum, loam cake, lower cover, porcelain plate, described electromagnetism drum comprises coil, magnetic stripe, drum support, described coil covers magnetic stripe and is installed on the drum support, the not wide setting in described magnetic stripe two ends, magnetic stripe is positioned at an end width of drum support inboard less than the width that is positioned at the drum support outside, it is characterized in that at least one end of described magnetic stripe is provided with the turning of envelope coil.
7. electromagnetic stove as claimed in claim 6 is characterized in that, described magnetic stripe is the U type along electromagnetic wire disc radial cross section.
8. electromagnetic stove as claimed in claim 7 is characterized in that described turning is vertical with coil plane.
9. as the described arbitrary electromagnetic stove of claim 6 to 8, it is characterized in that the described magnetic stripe surface of coil dorsad is provided with at least one fin, described fin is provided with perpendicular to electromagnetism drum radial direction.
10. as the described arbitrary electromagnetic stove of claim 6 to 8, it is characterized in that the described magnetic stripe surface of coil dorsad is provided with at least one fin, described fin and the angled setting of electromagnetism drum radial direction.
CN2009200297671U 2009-07-15 2009-07-15 Electromagnetic wire coil and electromagnetic range using the wire coil Expired - Lifetime CN201436824U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200297671U CN201436824U (en) 2009-07-15 2009-07-15 Electromagnetic wire coil and electromagnetic range using the wire coil

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Application Number Priority Date Filing Date Title
CN2009200297671U CN201436824U (en) 2009-07-15 2009-07-15 Electromagnetic wire coil and electromagnetic range using the wire coil

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102404889A (en) * 2010-09-08 2012-04-04 台达电子工业股份有限公司 Heating module
CN102538034A (en) * 2010-12-24 2012-07-04 博西华电器(江苏)有限公司 Electromagnetic range and magnetic strips thereof
CN104110708A (en) * 2014-05-26 2014-10-22 九阳股份有限公司 Induction cooker with magnetic stripe arranged at upper side of support
CN104768251A (en) * 2015-04-07 2015-07-08 佛山市顺德区美的电热电器制造有限公司 Coil panel assembly and induction cooker with same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102404889A (en) * 2010-09-08 2012-04-04 台达电子工业股份有限公司 Heating module
CN102538034A (en) * 2010-12-24 2012-07-04 博西华电器(江苏)有限公司 Electromagnetic range and magnetic strips thereof
CN104110708A (en) * 2014-05-26 2014-10-22 九阳股份有限公司 Induction cooker with magnetic stripe arranged at upper side of support
CN104110708B (en) * 2014-05-26 2018-01-16 九阳股份有限公司 Electromagnetic oven of the magnetic stripe on the upside of support
CN104768251A (en) * 2015-04-07 2015-07-08 佛山市顺德区美的电热电器制造有限公司 Coil panel assembly and induction cooker with same

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CX01 Expiry of patent term

Granted publication date: 20100407

CX01 Expiry of patent term