CN2268353Y - Impedance type ballast for fluorescent lamp - Google Patents

Abstract

The utility model provides an impedance type ballast for a fluorescent lamp, comprising a casing, the interior of the casing is provided with inductance coils L< 1 > and L< 2 > which are wound on the same combined iron core, one end of the L< 1 > and one end of the L< 2 > are respectively led out of the casing to be used as output ends for connecting filaments at one end of a fluorescent lamp, the other end of the L< 1 > is lead out of the casing, is used as a power input end, the other end of the L< 2 > is connected with a capacitor C< 1 > and a resistor R, is led out of the casing, is used as an output end for connecting the filament at the other end of the fluorescent lamp, and a capacitor C< 2 > is connected in parallel between the power input end and the conducting wire used for connecting the C< 1 > and the R. A conducting wire is arranged in the casing, both ends of the conducting wire are led out of the casing, and are used as the other power input end and an output end for connecting the filament at the other end of the fluorescent lamp.

Description

A kind of fluorescent-lamp-use impedance type ballast

The utility model relates to the fluorescent lamp circuit annex, particularly a kind of fluorescent-lamp-use impedance type ballast.

In the background technology, fluorescent lamp and starter, the supporting use of ballast.When starter makes the fluorescent lamp two ends produce higher starting resistor in the above-mentioned fluorescent lamp operation circuit, fluorescent wire could be launched enough electronics makes in the pipe gas ionization and excitated fluorescent powder luminous, because filament belongs to the cold cathode emission, energy is less, therefore need just can make the fluorescent lamp starter after the flicker several times, consequently the negative electrode thing that evapotranspires increases, filament is impaired, shorten the working life of fluorescent lamp, starter also requires electric power incoming line that higher voltage is arranged, so fluorescent lamp starts difficulty when the use of low-voltage area.Ballast plays the ballast effect behind the fluorescent lamp build-up of luminance, with maintenance fluorescent lamp steady operation, but its power factor lower (λ ∠ 0.5) so fluorescent lamp circuit energy consumption are bigger.

The purpose of this utility model is that a kind of improved impedance type ballast will be provided.Have higher power factor during the supporting use of this ballast and fluorescent lamp, can reduce the energy consumption of fluorescent lamp circuit; The circuit that this ballast and fluorescent lamp are formed still can make a build-up of luminance success of fluorescent lamp under the lower situation of electric power incoming line voltage; Can save starter and simplify fluorescent lamp circuit.

Task of the present utility model is finished as follows.

A kind of fluorescent-lamp-use impedance type ballast has housing, is provided with the inductance coil L on the same assembling iron core in the described housing ₁And L ₂, it is characterized in that described inductance coil L ₁And L ₂An end to draw housing respectively outer as the output that connects fluorescent lamp one end filament, inductance coil L ₁The other end to draw housing outer as power input, inductance coil L ₂Other end series capacitance C ₁, to draw housing after the resistance R outer as the output that connects fluorescent lamp other end filament, connects capacitor C ₁, be parallel with capacitor C between the lead of resistance R and the described power input ₂, establish a lead in the described housing in addition, it is outer as output and another power input of connecting fluorescent lamp other end filament, inductance L that housing is drawn at its two ends respectively ₁Scope be 1050-1650mh, inductance L ₂Scope be 400-700mh, capacitor C ₁Scope be 4-8 μ f, capacitor C ₂Scope be 1-3 μ f, the scope of resistance R is 6-10 Ω.

When the utility model ballast and fluorescent lamp were used in combination, the lamp current of fluorescent lamp was an inductance L ₁Last source current and resonant circuit L ₂C ₁The vector of last resonance current and, can obtain bigger lamp current under the less source current condition (promptly under lower electric power incoming line voltage conditions, the open circuit voltage effective value at fluorescent tube two ends is improved), fluorescent tube two ends filament is preheated because of being connected in the circuit, form stronger thermionic emission, fluorescent lamp can be by a starter success.Not only can remove starter from, simplify fluorescent lamp circuit, and because filament flicker free phenomenon, the negative electrode thing that evapotranspires reduces, and filament is impaired little, working life that can corresponding prolongation fluorescent lamp.Building-out capacitor C ₂, detune circuit L shakes ₂C ₁Proofread and correct and thereby the power factor λ that improves fluorescent lamp circuit reaches the purpose that reduces energy consumption with its capacity current.Inductance L ₁Play the ballast effect, can stably work behind the assurance fluorescent lamp starter.Current-limiting resistance R can avoid burning filament by big electric current in the circuit.Select suitable L ₁, L ₂, C ₁, C ₂The fluorescent lamp of making the utility model ballast of 20W, 30W, 40W and corresponding power with the R value is combined into 36 groups of tests that fluorescent lamp circuit does and shows: the equal starter success of fluorescent lamp (not using former starter in the circuit), filament flicker free phenomenon, the negative electrode thing that evapotranspires is few.Lamp tube ends open circuit voltage effective value reach can the starter fluorescent lamp 230-270V the time, electric power incoming line voltage all is lower than 160V, satisfies low-voltage and starts requirement.Power factor (PF) λ brings up to 0.95 ± 0.05, can reduce the loss of inactivity significantly, and its power saving rate reaches 43%.The check of the utility model ballast being done through Beijing National electric light source quality supervision and test center shows: by GB14044-93 tubular flourescent lamp ballast performance requirement check all qualified (report is numbered № 95314), by GB2313-93 tubular flourescent lamp ballast safety requirements check qualified fully (report is numbered № 96028), wherein coil heats up one through test in three months, and the working life that calculates the utility model ballast reached more than 10 years.

Compared to the prior art, the fluorescent lamp circuit that uses the utility model ballast and fluorescent lamp to form can be removed starter, an also starter success from, is particularly suitable for the low-voltage area and uses.The fluorescent lamp operation circuit is succinct, long working life.Power factor λ is from bringing up to 0.95 ± 0.05 less than 0.5, the electric energy height, can save a large amount of energy, has good social benefit and economic benefit.

Below with reference to accompanying drawing structure of the present utility model is described in further detail.

Fig. 1 is the electric principles of construction schematic diagram of the utility model ballast.

Fig. 2 is the electric connection construction schematic diagram of the utility model ballast and fluorescent tube.

Fig. 3 is the organigram of the utility model ballast product.

Consult Fig. 1, Fig. 3, the utility model ballast comprises the inductance coil L that is provided with in housing 1, the housing on the same group of iron core ₁And L ₂(being labeled as 8 among Fig. 3), inductance coil L ₁Scope be 1050-1650mh, inductance L ₂Scope be 400-700mh.Inductance coil L ₁And L ₂An end draw outside the housing as the output 2 and 3 that connects fluorescent lamp one end filament, inductance coil L through line protecting clip 14 respectively ₁The other end draw outside the housing as power input 4 inductance coil L through line protecting clip 15 ₂Other end series capacitance C ₁(being labeled as 9 among Fig. 3), current-limiting resistance R (being labeled as 10 among Fig. 3) after line protecting clip 15 to draw housing outer as the output 5 that connects fluorescent lamp other end filament, connect capacitor C ₁, be parallel with building-out capacitor C between the lead of resistance R and the power input 4 ₂(being labeled as 11 among Fig. 3), capacitor C ₁Scope be 4-8 μ f, capacitor C ₂Scope be 1-3 μ f, the scope of resistance R is 6-10 Ω, establishes a lead in the described housing in addition, draw outside the housing as output 6 and another power input 7 of connecting fluorescent lamp other end filament, described capacitor C through line protecting clip 15 respectively at its two ends ₁With C ₂With insulating paper 12 insulation, 13 sealing of external application insulating cement.

Consult Fig. 2, when the utility model ballast used, output 2,3 was electrically connected with the filament of fluorescent lamp 16 1 ends, and output 5,6 is electrically connected with the filament of fluorescent lamp 16 other ends, power input 4,7 external AC power supplies.

Claims (1)

1, a kind of fluorescent-lamp-use impedance type ballast has the inductance coil L that is provided with in housing (1), the described housing on the same assembling iron core ₁And L ₂, it is characterized in that described inductance coil L ₁And L ₂An end to draw housing respectively outer as the output (2) and (3) that connect fluorescent lamp one end filament, inductance coil L ₁The other end to draw housing outer as power input (4), inductance coil L ₂Other end series capacitance C ₁, to draw housing after the resistance R outer as the output (5) that connects fluorescent lamp other end filament, connects capacitor C ₁, be parallel with capacitor C between the lead of resistance R and the described power input (4) ₂, establish a lead in the described housing in addition, it is outer as the output (6) and another power input (7) that connect fluorescent lamp other end filament, inductance L that housing is drawn at its two ends respectively ₁Scope be 1050-1650mh, inductance L ₂Scope be 400-700mh, capacitor C ₁Scope be 4-8 μ f, capacitor C ₂Scope be 1-3 μ f, the scope of resistance R is 6-10 Ω.

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