CN2750615Y

CN2750615Y - LC advanced annular ballast

Info

Publication number: CN2750615Y
Application number: CN 200420025339
Authority: CN
Inventors: 秦大为
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-12
Filing date: 2004-03-12
Publication date: 2006-01-04
Anticipated expiration: 2014-03-12

Abstract

The utility model relates to an LC advanced annular ballast for gas light emitting light sources, which is formed from series connection of an annular iron core reactor L and a capacitor C. The ballast carries out ballasting through the annular iron core reactor L and the capacitor C. Capacitive reactance is bigger than inductive reactance in the circuit. Therefore, the advanced voltage of an electric current passing through the LC is about 90 DEG. The principle picture of the circuit is shown in the accompanying picture 1 in the specification. In order to gain the uniform distribution of magnetic induction in the annular iron core, cause temperature rising at the interior and the exterior of a winding is consistent thereby, reduce consumption, the air gap of the iron core is made into the shape of a horn mouth. The interior of the air gap is big and the exterior is small and the angle of the inner and the outer mouths is controlled between 0 and 15 DEG. The structural pictures of the iron core and the air gap are shown in the accompanying picture 2 in the specification. The ballast is used for gas light emitting light sources of daylight lamps, high-voltage mercury lamps, high-voltage sodium lamps, etc.

Description

The leading ringlike induction ballast of LC

Technical field

The invention belongs to the gas discharge lamp ballast technical field.

Background technology

The plain edition Inductive ballast adopts E type silicon steel sheet usually, and the folded enameled wire loop of making iron core and overlapping thereon to turn to is made.The inequality because E type silicon steel sheet when work magnetic line of force on the plane of iron plate is arranged, inside lock place density is the highest, and four corner densities of line of magnetic force of neighboring are less.E type silicon steel sheet is subjected to the restriction of mechanical performance own, magnetic flux density can not improve, therefore, in order to reduce the eddy current loss of E type silicon steel sheet, often do silicon steel sheet thickness very thin, every silicon steel sheet interlayer is insulated, and the duty ratio of iron core is risen, need increase the long-pending face of iron core during design and compensate, make the corresponding increase of every circle enamelled wire girth.Except that the spillage of material that increases silicon steel sheet and enamelled wire, ballast volume and weight all increase undoubtedly, have increased self copper loss and iron loss of ballast in addition, have promptly increased own loss.Therefore, there is big, the Heavy Weight of volume in common E shape iron core ballast, coil internal resistance height, inefficiency, stabilized current characteristic is poor, shortcomings such as starting current is big, and the leading ringlike induction ballast of LC has been owing to its structural reason has remedied the deficiency of common E shape iron core ballast are mainly reflected in aspects such as economize on electricity, volume be little, in light weight.

Summary of the invention

The present invention is that the purpose of utility model provides the leading ringlike induction ballast of a kind of LC, be used for gas luminescence light sources such as common fluorescent lamp, high-pressure sodium lamp, high-pressure mercury lamp, compare with the ballast of common employing E type silicon steel plate packing have economize on electricity, volume is little, the advantage of compact conformation.

Designing requirement can meet or exceed every technical indicator of common Inductive ballast for the ringlike induction ballast after retrofiting.

And in current urban and suburban roads illumination, what the overwhelming majority adopted is the higher high-pressure sodium lamp of luminous efficiency, and the height of the operating efficiency of the ballast that it matches, reliability of operation, stabilized current characteristic, life-span and comprehensive economic index thereof have important role.Of the present invention and the leading bad shape ballast of LC can shorten magnetic circuit, reduce core volume, reduce loop length, tight structure, dwindle the space, reduce the ballast own loss, raise the efficiency, improve the current stabilization performance, reduce starting current and short circuit current, and can improve power factor of electric network effectively, improve the utilance of power supply transformation, reduce line loss.Can utilize simultaneously the design feature of annular core reactor self, can be directly be placed on the lamp socket of E27 or E40 in the cylindrical bore of this reactor together with bulb, dwindle installing space, bulb and ballast are integrated, have solved the difficult problem that the ballast of many Lawn lamps, flower garden lamp and festive lantern is difficult to place.Of the present invention and the leading ringlike induction ballast of LC be to be in series by annular reactor L and AC capacitor C, capacitive reactance is greater than induction reactance in the circuit, and annular reactor L and AC capacitor C unite two into one structure in aggregates when assembling.

Description of drawings

Below in conjunction with Figure of description the utility model is further specified.

Figure one is circuit theory diagrams of the present utility model.

Figure two is annular iron core and the gap structure figure in the annular reactor that reaches described in the utility model.

Embodiment

The present invention constitutes the leading annular core ballast of LC by annular core reactor L and capacitor C series connection, and capacitive reactance is greater than induction reactance in the circuit, so about 90 ° of electric current leading voltages by LC, its circuit is shown in Figure of description one.

Described in the present invention and the annular core reactor adopt the annular iron core structure, and with special-purpose loop wire winder coiling reactor winding winding.In order to try to achieve the even distribution of the magnetic flux density in the annular core, make the inside and outside temperature rise unanimity of winding, and then reduce loss, iron core air gap is designed to toroidal, interior big outer little, between inside and outside bicker is controlled 0-15 °, shown in Figure of description two.

The capacitor C that reaches described in the present invention is the AC metal polypropylene film capacitor, can be positioned among the endoporus of annular reactor, and also available epoxy casts in annular reactor and forms an overall structure.

Claims

1, of the present invention and the leading ringlike induction ballast of LC, it is characterized in that being in series by annular reactor L and AC capacitor C, in the circuit capacitive reactance greater than induction reactance, about 90 ° of the electric current leading voltages by LC.

2, the leading ringlike induction ballast of addressing according to claim 1 of LC is characterized in that: adopt the annular core structure, its iron core air gap is designed to toroidal, and interior big outer little, inside and outside bicker is controlled between 0-15 °.

3, the leading ringlike induction ballast of addressing according to claim 1 of LC, it is characterized in that: AC capacitor C is that metalizing polypropylene thin film capacitor is can make in the cylindrical endoporus that is positioned over annular core reactor L, and also available epoxy casts in the annular core reactor and forms an overall structure.