CN2169273Y

CN2169273Y - Flueorescent ballast

Info

Publication number: CN2169273Y
Application number: CN 93221927
Authority: CN
Inventors: 高敏三; 易敬曾
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-08-18
Filing date: 1993-08-18
Publication date: 1994-06-15
Anticipated expiration: 2003-08-18

Abstract

The utility model discloses a new product of an inductive ballast for a fluorescent lamp. The magnetic leakage characteristic of a transformer coil is as a principle, a magnetic leakage transformer is wound, the secondary coil of the transformer is connected with a capacitor in series, the inductive ballast is composed at once, and is named to magnetic leakage ballast transformer. The utility model has the advantages of high power factor, good power save effect, stable performance, voltage fluctuation resistance and strong current overload capacity, a glow starter does not need to be provided, the inductive ballast can still be instantly started when voltage is low to 140V and temperature is 15-8 centi degrees, cos phi is bigger than 0.75, and while the cost is not increased.

Description

Flueorescent ballast

The utility model belongs to the daylight lamp circuit components and parts.

Most popular ballast remains traditional inductance type ballast in the daylight lamp circuit at present, and this ballast is exactly a low pressure choking-winding, and adds a starter in circuit.Its major defect is that deal is heavy, volume is big, under low temperature, low pressure, is difficult for starting, and work power consumption height, luminous efficiency and power factor (PF) are all low, and starter is perishable, often change.But because of its price is more cheap, hardware features is good, and long service life is so still be widely adopted so far.

The purpose of this utility model is to provide a kind of replacement new product of inductance type ballast, basic identical and keep under relative price is low, hardware features the is good situation at raw material, according to diverse operation principle, design a kind of have efficient, economize on electricity, just can be without starter at the ballast of Fast starting under the low-temp low-pressure.

Realizing above-mentioned purpose, is to have this characteristics design of leakage field according to transformer coil.In each winding of transformer, except that most of magnetic lines of force pass the winding coil, also have quite a few magnetic line of force to pass through space and medium, form leakage field, utilize this leakage field characteristic, turn to leakage transformer (1).This leakage transformer (1) is by magnetive cord (B), primary coil (L ₁) and secondary coil (L ₂) form, a serial connection capacitor (C) on secondary coil, just composition has the fluorescent lamp leakage field ballast transformer that low pressure starts fast, and its operation principle is as shown in drawings.

The capacitor (C) that is connected in series on leakage transformer (1) and the secondary coil can be encapsulated in the same involucrum and become one, and only exposes 4 electric connections.Primary coil (L ₁) two electric connections, one is used to connect power firestreak, another connects a runners of fluorescent tube (2) one ends; Secondary coil (L ₂) an electric connection, connect a runners of fluorescent tube (2) other end, an electric connection that stretches out on the capacitor (C) links to each other with another runners of fluorescent tube that primary coil connects one end.Certainly, leakage transformer and capacitor also can not be packaged into one.

The utility model and traditional inductance type ballast relatively have the following advantages:

1, can under low-pressure low-temperature, start fast.Common inductance type ballast, the supply voltage of startup adopt newly-designed ballast greater than 170V, needn't use starter, can start when 140V.Can both start at once during as temperature-5 under in normal voltage ℃～8 ℃; When low-pressure low-temperature, the starting time was no more than for 3 seconds.

2, owing to needn't add starter in addition, contactless during starting, no-spark can be used in inflammable and explosive occasion.

3, power factor (PF) height, Cos φ＞0.75, good energy-conserving effect, electric current is than big during except that startup, and electric current is little during operate as normal, and the 40W fluorescent lamp can be kept operate as normal under 300mA, can prolong the useful life of fluorescent tube.

4, good operating stability has very strong reactance voltage fluctuation and current overload ability, can work in adverse circumstances.Disturb also little to electric equipment on every side.

5, user installation is simple, does not also have the trouble of often changing starter.

Accompanying drawing is a fundamental diagram of the present utility model, has also represented the basic structure of leakage field ballast transformer simultaneously.

1---leakage field ballast transformer, wherein B is an iron core, L ₁Be primary coil, L ₂Be secondary coil, C is a capacitor.

2---fluorescent tube

Implement the design, the general available thickness of its leakage transformer is that the silicon steel sheet of 0.35mm strikes out double L-shaped or the TU type, and double L-shaped do not have waste material as the reasonable silicon steel sheet of punching press, can reduce cost; It is long-pending that the TU type can increase core section, thereby reduce the enamelled wire number of turn, also can reduce cost, and winding method is with conventional identical.Below be the key data of five kinds of power fluorescent tube embodiment:

Fluorescent lamp silicon steel sheet sectional area line is through elementary number of turns number of secondary turns configuration electric capacity

（W）（cm ²）（mm）（n ₁）（n ₂）（μf）

40 5.0～5.2 0.32 1550～1450 750～700 4

30 5.0～5.2 0.32 1550～1450 750～700 3

20 5.0～5.2 0.29 1550～1450 750～700 2

15 4.8～5.0 0.29 1550～1450 750～700 1.5

8 3.0～3.2 0.19 2550～2500 1250～1200 1.2

Above data are because of being subjected to the influence of silicon steel sheet material, and every batch of material character is incomplete same, so the capacitor of the primary and secondary number of turns and configuration should be done suitable adjustment.

Claims

1, a kind of inductance type fluorescent lamp ballast is made up of magnetic coil, it is characterized in that utilizing the leakage field characteristic of transformer, goes up coiling primary coil (L at magnetive cord (B) ₁) and secondary coil (L ₂) make leakage transformer (1), at the secondary coil (L of leakage transformer (1) ₂) go up a serial connection capacitor (C), promptly constitute the utility model---leakage field ballast transformer.

2, leakage field ballast transformer according to claim 1 is characterized in that leakage transformer (1) and capacitor (C) can be encapsulated in the same involucrum, overhanging 4 electric connections.Also can not be packaged into one.