WO2006007798A1 - Type de ballast utilise dans une lampe a sodium haute tension - Google Patents

Type de ballast utilise dans une lampe a sodium haute tension Download PDF

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Publication number
WO2006007798A1
WO2006007798A1 PCT/CN2005/001101 CN2005001101W WO2006007798A1 WO 2006007798 A1 WO2006007798 A1 WO 2006007798A1 CN 2005001101 W CN2005001101 W CN 2005001101W WO 2006007798 A1 WO2006007798 A1 WO 2006007798A1
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WIPO (PCT)
Prior art keywords
magnetic core
ballast
magnetic
yoke
sodium lamp
Prior art date
Application number
PCT/CN2005/001101
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English (en)
French (fr)
Inventor
K.N.Kern Chang
Naiyao Chang
Original Assignee
Shanghai Kenan Energy Saving Electric Co., Ltd.
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Publication date
Application filed by Shanghai Kenan Energy Saving Electric Co., Ltd. filed Critical Shanghai Kenan Energy Saving Electric Co., Ltd.
Publication of WO2006007798A1 publication Critical patent/WO2006007798A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/08—High-leakage transformers or inductances
    • H01F38/10—Ballasts, e.g. for discharge lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields

Definitions

  • the present invention relates to a choke for a lighting fixture, and more particularly to a ballast for a high pressure sodium lamp. Background technique
  • the traditional ballast has the structure of "E" type, "C” type and “ ⁇ " type. Please refer to Figure 1 and Figure 6 for the ballasts of these three structures.
  • Figure 1 and Figure 2 show
  • E type structure
  • 10 is the core
  • 11 is the coil
  • 12 is the yoke
  • the dotted arrow in Figure 3 indicates the direction of the magnetic field line.
  • Figure 4 and Figure 5 show the structure of "C” type, with 10 being the core and 11 being the coil.
  • Figure 6 shows the "0" structure, with 10 being the core and 11 being the coil.
  • the structure of the ballast described above is all in the structure of "circuit envelope magnetic circuit", and the core of the ballast is mostly exposed outside the coil.
  • ballasts have various shortcomings, and the ' ⁇ ' type ballast has low electromagnetic conversion efficiency and large magnetic leakage; "C" type ballast has large weight, large magnetic leakage, and complicated processing technology; The structure processing process is complicated, the magnetic leakage is large, and the coil winding is complicated. In short, the conventional ballast has the disadvantages of large volume and high cost.
  • the purpose of the utility model is to solve the above-mentioned shortcomings of the conventional high-pressure sodium lamp ballast, and propose a ballast for a high-pressure sodium lamp with high magnetic conversion efficiency, small volume and low cost.
  • the ballast for a high pressure sodium lamp comprises a magnetic core, a yoke, a choke coil,
  • the magnetic core is a "return type, body, and back type” in which a center has a boss and a side edge is disposed, and a groove is formed between the boss and the surrounding side, and the "return type” body is formed. End opening, lower end sealing Closed
  • the coil is stacked in a groove formed by the boss of the magnetic core and the surrounding side edges;
  • the yoke is capped to the upper end surface of the magnetic core.
  • the surrounding side of the "return type" body of the magnetic core is a straight surface, and the central boss is a hollow boss, and the four corners of the magnetic core are left with a notch;
  • the choke coil has a square shape.
  • the yoke of the said yoke has a "cross" shape.
  • the magnetic core is formed by stacking longitudinal silicon steel sheets
  • the yoke is formed by stacking longitudinal silicon steel sheets.
  • the side surface of the "return type" body of the magnetic core has a circular arc surface, and the four diagonal corners of the magnetic core have a gap;
  • the magnetic core boss has a cylindrical shape, and a circular groove is formed between a side surface of the magnetic core and the boss; the choke coil has a circular shape.
  • the yoke has a disk shape and is notched at four diagonal directions in the radial direction.
  • the magnetic core is formed by stacking longitudinal silicon steel sheets
  • the yoke is formed by stacking longitudinal silicon steel sheets.
  • the magnetic core is designed as a "return type" body having a boss at the center and a side edge, and a “return type” is formed between the boss of the body and the side edges.
  • a groove the choke coil is stacked in the groove of the core, and the yoke is closed on the upper end surface of the core. Therefore, the core and the magnetic tube completely enclose the choke coil, the core
  • the magnetic field generated by the magnetic field basically has no magnetic leakage phenomenon, and the magnetic fields in all directions are fully utilized.
  • the ballast of the utility model has less magnetic loss, and the magnetic conversion efficiency is obtained.
  • the cross-sectional area of the core and the coil windings are small, the temperature rise is low, thereby reducing the cost of the raw materials produced by the ballast, reducing the volume and weight, the coil
  • the winding is also relatively simple, and the efficiency of the ballast is improved.
  • FIG. 1 is a schematic diagram showing the structure of a conventional "E" type ballast.
  • FIG. 2 is a schematic view showing the structure of the ballast shown in FIG. 1.
  • 3 is a schematic view showing the direction of magnetic lines of the ballast shown in FIG. 1.
  • Figure 4 is a schematic diagram showing the structure of a conventional "C" type ballast structure.
  • FIG 5 is a schematic view showing the structure of the ballast shown in Figure 4.
  • Figure 6 is a schematic view of the structure of a conventional "0" ballast.
  • FIG. 7 is a schematic view showing the structure of the ballast structure of the present invention.
  • Figure 8 Figure 7 shows the structure of the ballast.
  • Fig. 10 and Fig. 11 are respectively schematic diagrams showing the magnetic cores of the ballast of the present invention stacked by thin silicon steel sheets. detailed description
  • the ballast 20 for a high pressure sodium lamp of the present invention includes a magnetic core 21, a yoke 22, and a choke coil 23.
  • the magnetic core 21 is a "return type” body having a boss 211 at the center and a side 212 at the periphery thereof.
  • a groove 213 is formed between the boss 211 of the "return type” body and the side edges 212. "The upper end face of the body is closed and the lower end face is closed.
  • the choke coil 23 is stacked in a recess 213 formed by the boss of the magnetic core and the side edges.
  • the yoke 22 is covered on the upper end surface of the magnetic core 21.
  • the magnetic core 20 shown in Figs. 7 and 8 has straight sides, and the four corners of the magnetic core 20 are provided with notches 214.
  • the four notches 214 may be symmetrically arranged or asymmetrically arranged.
  • the choke coil 23 is also squared so as to be placed in the recess 213.
  • the intermediate boss 211 can be designed as a hollow boss.
  • the horizontal section of the yoke 22 has a "cross" shape so that it can fit over the core 21, and a symmetrical or asymmetrical gap 221 is left at the four diagonal positions of the yoke 22.
  • the notch 221 corresponds to the notch 214 of the magnetic core 21.
  • the yoke 22 and the magnetic core 21 can be respectively divided into the shapes of FIGS. 10 and 11, which facilitate processing and fabrication in the process, and the magnetic core 21 is composed of a plurality of longitudinal silicon steel sheets.
  • the yoke 22 is also formed by stacking a plurality of longitudinal silicon steel sheets.
  • V is the generated voltage
  • ⁇ is the number of turns of the coil
  • ( ⁇ /dt is the changing magnetic field
  • ⁇ is the magnetic field strength
  • ⁇ is the cross-sectional area of the magnet
  • the voltage V is proportional to the product of the magnetic field strength B and the cross-sectional area A of the magnet, and the voltage is proportional to the number of turns of the coil.
  • the number of turns of the coil and the core The product of the cross-sectional area is a constant of design. The larger the magnetic field strength, the larger the voltage and current generated, the larger the cross-sectional area of the magnet, the larger the voltage and current generated, and the higher the magnetic conversion efficiency.
  • the side surface of the "return type" body of the magnetic core has a circular orphan plane, and the four diagonal corners of the core extending in the diameter direction are provided with symmetrical or asymmetrically disposed notches.
  • the shape of the yoke is disc-shaped, and the four diagonals of the yoke in the diametrical direction also have symmetrical or asymmetrical notches which correspond to the notches on the core.
  • the magnetic core boss is cylindrical, and the boss can be designed as a hollow boss, and a circular groove is formed between the side surface of the magnetic core and the boss.
  • the choke coil is circular.
  • the magnetic core is also formed by stacking a plurality of longitudinal silicon steel sheets
  • the yoke is also formed by stacking a plurality of longitudinal silicon steel sheets.
  • ballast for a 400W high-pressure sodium lamp produced by Philips compared with the ballast of the present invention, illustrates the advantages of the utility model: Phillips products
  • the power is 400W, the weight is 4575g, the power consumption is less than or equal to 9%, and the temperature rise is less than or equal to 70.
  • the power is 400W
  • the weight is 3500g
  • the power consumption is less than or equal to 8%
  • the temperature rise is less than or equal to 70°C. In terms of cost, the latter is reduced by more than 20% compared with the former.
  • the ballast of the present invention can design the magnetic core and the yoke of the ballast into different shapes.
  • those skilled in the art should recognize that the above embodiments are only used.
  • the present invention is not limited by the scope of the present invention, and variations and modifications of the above-described embodiments will fall within the scope of the claims of the present invention. .

Description

一种高压钠灯用镇流器 技术领域
本发明涉及照明灯具的扼流器， 更具体地指一种高压钠灯用镇流器。 背景技术
根-据法拉第电磁感应定律可知， 在交变电路中磁力线随时变化， 可以改 变电压的高低和电流的大小， 凭此原理人们制造了各种变压器和镇流器， 关 于变压器， 本申请人曾针对传统变压器由于采用 "电路包围磁路" 结构， 而 存在线圈两侧的部分磁场不能充分利用， 漏磁较大， 导致变压器的效率低、 变压器的体积大、 成本高的缺点，提出了 "磁路包围电路"式结构的变压器， 以此来克服传统变压器所存在的缺点。 关于镇流器， 到目前为止， 仍然采用
"电路包围磁路" 的结构。 如传统的镇流器有 "E" 型、 "C" 型、 'Ό" 型 结构， 这三种结构的镇流器请分别参阅图 1-图 6所示， 其中， 图 1、 图 2为
"E" 型结构， 10为磁芯， 11为线圈， 12为磁轭， 图 3 中的虚线箭头表示 磁力线方向。 图 4、 图 5为 "C"型结构， 10为磁芯， 11为线圈。 图 6为 "0" 结构， 10为磁芯， 11 为线圈。 综合上述的镇流器的结构， 均属于 "电路包 围磁路" 结构， 镇流器的磁芯均大部分露出于线圈外。 因此这类镇流器均存 在各种缺点， 'Έ" 型镇流器的电磁转换效率低， 漏磁大； "C" 型镇流器重 量大、 漏磁大， 加工工艺复杂； "0" 型结构加工工艺复杂， 漏磁大， 线圈 绕制复杂。 总之， 传统的镇流器均存在体积大和成本高的缺点。 发明内容
本实用新型的目的是针对传统的高压钠灯镇流器存在的上述缺点，提出 一种磁转换效率高、 体积小、 成本低的高压钠灯用镇流器。
为了实现上述目的， 本实用新型采用如下技术方案， 该高压钠灯用镇流 器包括磁芯、 磁轭、 扼流线圈，
所述的磁芯为一中心具有凸台、 四周设置侧边的 "回型，， 体， "回型，， 体的凸台与四周侧边之间形成凹槽， "回型" 体的上端面开口、 下端面封 闭；
所述线圈叠放于磁芯的凸台与四周侧边形成的凹槽内；
所述磁轭盖合于磁芯的上端面。
所述的磁芯的 "回型" 体的四周侧面为直面， 中间的凸台为中空凸台， 磁芯的四对角留有缺口；
所述的扼流线圈呈方形。
.所述.的磁轭_的 平截面呈一 "十字" 型。
所述的磁芯由纵向硅钢薄片相叠而成；
所述的磁轭由纵向硅钢薄片相叠而成。
所述的磁芯的 "回型"体的侧面呈圆弧面， 磁芯的延直径方向的四对角 留有缺口；
所述的磁芯凸台呈圆柱状， 磁芯的侧面与凸台之间形成圆形凹槽； 所述的扼流线圈呈圆形。
所述的磁轭的形状呈圆盘状， 其延直径方向的四对角留有缺口。
所述的磁芯由纵向硅钢薄片相叠而成；
所述的磁轭由纵向硅钢薄片相叠而成。
在本实用新型的高压钠灯镇流器中， 将磁芯设计为一中心具有凸台、 四 周设置侧边的 "回型" 体， "回型，， 体的凸台与四周侧边之间形成凹槽， 将扼流线圈就叠放于磁芯的凹槽内， 并将磁轭盖合于磁芯的上端面。 因此， 磁芯和磁辆将扼流线圈全部包络于内， 磁芯、 磁 所产生的磁场基本上不存 在漏磁现象， 各方向的磁场均得到了充分的利用。 与传统的镇流器相比， 本 实用新型的镇流器磁损少， 磁转换效率得到了较好地提高， 在设定条件相同 的情况下， 磁芯的截面积和线圈绕组少、 温升低， 从而降低了镇流器器制作 的原材料所需的成本， 减少了体积和重量， 线圈的绕制也较为筒单， 并且提 高了镇流器的效率。 附图说明
图 1为传统的 "E" 型镇流器结构分介示意图。
图 2为图 1所示的镇流器结构示意图。 图 3为图 1所示的镇流器磁力线方向示意图。
图 4为传统的 "C" 型镇流器结构分介示意图,
图 5为图 4所示镇流器结构示意图。
图 6为传统的 "0" 型镇流器结构示意图。
图 7为本实用新型镇流器结构分介示意图。
图 8图 7所示镇流器结构示意图。
. —图 9为本—实; i新犁-镇流器磁力线方向示意图。
图 10、 图 11分别为本实用新型镇流器的磁扼 磁芯由薄型硅钢片相叠 示意图。 具体实施方式
为进一步说明本发明的上述目的、 技术方案和效果， 以下通过实施例结 合上述各图对本发明进行详细的描述。
请参阅图 7、 图 8所示， 本实用新型的高压钠灯用镇流器 20包括磁芯 21、 磁轭 22、 扼流线圈 23。
所述的磁芯 21为一中心具有凸台 211、四周设置侧边 212的 "回型 "体， "回型" 体的凸台 211与四周侧边 212之间形成凹槽 213 , "回型" 体的 上端面开口、 下端面封闭。
所述扼流线圈 23叠放于磁芯的凸台与四周侧边形成的凹槽 213内。 所述磁轭 22盖合于磁芯 21的上端面。
图 7、 图 8所示意的磁芯 20的四周侧面均为直面， 磁芯 20的四对角留 有缺口 214, 四个缺口 214可以对称设置也可以非对称设置。 扼流线圈 23 也呈方形， 以便置于凹槽 213内。 中间的凸台 211可设计为中空凸台。
相应地， 磁轭 22的水平截面则呈一 "十字" 型， 使其正好能盖合于磁 芯 21上， 在磁轭 22的四个对角位置也留有对称或非对称设置的缺口 221 , 缺口 221与磁芯 21缺口 214相对应。 在制作磁芯 21和磁轭 22时， 可将磁 轭 22和磁芯 21分别分割成图 10、 图 11的形状， 这样便于工艺上的加工和 制作， 磁芯 21由若干的纵向硅钢薄片相叠而成， 同样， 磁轭 22也由若干纵 向硅钢薄片相叠而成。 当将磁芯 21、 磁轭 22、 扼流线圈 23组装后即可形成如图 8所示的高压 钠灯用的镇流器 20。
对于这样的镇流器而言， 所有的扼流线圈 23几乎被包覆在磁芯 21、 磁 轭 22内， 基本上做到了 "磁路包围电路" ， 请再参见图 9所示， 图中带箭 头的虚线为磁力线 25方向， 磁力线 25的损失少， 因而漏磁也小。磁力线 25 基本上没有浪费， 而不像传统的镇流器的侧边的磁力线没有被充分利用， 显 然-, 本实用新型的镇流 _器基本上没有漏磁现象， 从法拉第公式 ν = -Ν((1Φ /dt)=-NBA ω 可以佐证本实用新型的鎮流器的转换效率，
式中， V 为产生的电压， Ν为线圈匝数， （ΙΦ/dt为变化的磁场， Β为磁 场强度， Α为磁体截面积，
由此可知： 电压 V与磁场强度 B、 磁体截面积 A的乘积成正比， 电压 与线圈的匝数成正比， 在设定的初级或次级电压的情况下， 线圈的匝数和磁 芯的截面积的乘积是一个设计的常数， 磁场强度越大， 所产生的电压、 电流 越大， 磁体截面积越大， 所产生的电压、 电流也越大， 磁转换效率也越高。
作为另一个实施例， 磁芯的 "回型" 体的侧面呈圆孤面， 磁芯的延直径 方向的四对角留有对称或非对称设置的缺口。 磁轭的形状呈圆盘状， 磁轭的 延直径方向的四对角也留有对称或非对称缺口，该缺口与磁芯上的缺口相对 应。
由于基于前一实施例的镇流器相类似的结构，该实施例就没有用图示意 出。
当然， 在该实施例中， 磁芯凸台则呈圆柱状， 凸台可设计为中空凸台， 磁芯的侧面与凸台之间形成圆形凹槽，
相应地， 所述的扼流线圈则呈圆形。
在制作时，
所述的磁芯也由若干纵向硅钢薄片相叠而成；
所述的磁轭也由若干纵向硅钢薄片相叠而成。
以菲利浦公司出品的 400W高压钠灯用的镇流器例， 来与本实用新型的 镇流器相比， 说明本实用新所具有的优点： 菲利浦产品
功率为 400W, 重量为 4575克， 功耗小于等于 9 % , 温升小于等于 70
。C。 本实用新型产品
功率为 400W,重量为 3500克，功耗小于等于 8% ,温升小于等于 70°C。 在成本上， 后者与前者相比， 降低了 20 %以上。
通过以上参数可以看出，在高压钠灯同等亮度的情况下和镇流器的其它 性能指标不变的情况下， 本实用新型的镇流器的重量大大降低， 这更能进一 步说明本实用新型镇流器的优越性。
本实用新型的镇流器可以依据上述思想，可以将镇流器的磁芯和磁轭设 计呈不同的形状， 当然， 本技术领域中的普通技术人员应当认识到， 以上的 实施例仅是用来说明本实用新型， 而并非用作为对本实用新型的限定， 只要 在本实用新型的实质精神范围内， 对以上所述实施例的变化、 变型都将落在 本实用新型权利要求书的范围内。

Claims

权利要求
1、 一种高压钠灯用镇流器， 该镇流器包括磁芯、 磁轭、 扼流线圈， 其特征在于：
所述的磁芯为一中心具有凸台、 四周设置侧边的 "回型，， 体， "回型，， 体的凸台与四周侧边之间形成凹槽， "回型，， 体的上端面开口、 下端面封 闭；
所述扼流线圈叠放于磁芯的凸台与四周侧边形成的凹槽内；
所述磁轭盖合于磁芯的上端面。
2、 如权利要求 1所述的高压钠灯用镇流器， 其特征在于：
所述的磁芯的 "回型" 体的四周侧面为直面， 中间的凸台为中空凸台， 磁芯的四对角留有缺口；
所述的扼流线圈呈方形。
3、 如权利要求 1所述的高压钠灯用镇流器， 其特征在于： 所述的磁轭 的水平截面呈一 "十字" 型。
4、 如权利要求 1-3任一项所述的高压钠灯用镇流器， 其特征在于： 所述的磁芯由纵向硅钢薄片相叠而成；
所述的磁轭由纵向硅钢薄片相叠而成。
5、 如权利要求 1所述的高压钠灯用镇流器， 其特征在于：
所述的磁芯的 "回型，，体的侧面呈圆弧面， 磁芯的延直径方向的四对角 留有缺口；
所述的磁芯凸台呈圆柱状， 磁芯的侧面与凸台之间形成圆形凹槽； 所述的扼流线圈呈圆形。
6、 如权利要求 5所述的高压钠灯用镇流器， 其特征在于： 所述的磁轭的形状呈圓盘状， 其延直径方向的四对角留有缺口。
7、 如权利要求 5或 6所述的高压钠灯用镇流器， 其特征在于： 所述的磁芯由纵向硅钢薄片相叠而成；
所述的磁轭由纵向硅钢薄片相叠而成。
PCT/CN2005/001101 2004-07-23 2005-07-22 Type de ballast utilise dans une lampe a sodium haute tension WO2006007798A1 (fr)

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CN101004968B (zh) * 2006-12-14 2010-05-19 上海立新电器控制设备有限公司 镇流器铁芯的制作方法
TWI497539B (zh) * 2011-01-14 2015-08-21 Yujing Technology Co Ltd Ultra high power transformer
CN102810387A (zh) * 2012-08-27 2012-12-05 温博 进一步节材节能的电感镇流器或变压器磁芯体的结构
CN103310954A (zh) * 2013-06-06 2013-09-18 温博 节材型电感式镇流器或变压器
CN104021921A (zh) * 2014-05-27 2014-09-03 华为技术有限公司 耦合电感和功率变换器

Citations (2)

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Publication number Priority date Publication date Assignee Title
US5432409A (en) * 1978-03-20 1995-07-11 Nilssen; Ole K. Electronic ballast with parallel-tuned output circuit
CN2335339Y (zh) * 1998-05-07 1999-08-25 肖孟章 高压钠灯电子镇流器

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Publication number Priority date Publication date Assignee Title
US5432409A (en) * 1978-03-20 1995-07-11 Nilssen; Ole K. Electronic ballast with parallel-tuned output circuit
CN2335339Y (zh) * 1998-05-07 1999-08-25 肖孟章 高压钠灯电子镇流器

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