CN2134024Y

CN2134024Y - Capacitive energy-saving fluorescent lamp ballast

Info

Publication number: CN2134024Y
Application number: CN 92225681
Authority: CN
Inventors: 宫宗泽; 铁春英
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-22
Filing date: 1992-06-22
Publication date: 1993-05-19
Anticipated expiration: 2002-06-22

Abstract

The utility model relates to a capacitive energy-saving fluorescent lamp ballast, comprising a casing. Three connecting terminals are arranged on the casing; one connecting terminal is connected with one end of a current-limiting capacitor; the other terminal is connected with one end of a discharge resistance; another terminal is connected with one end of a stabilized current inductance; the other ends of the current-limiting capacitor, the discharge resistance and the stabilized current inductance are connected with each other together. The utility model has the advantages of capability of the transmission of reactive power to electric network, improvement of power factor of the electric network, remarkable effect of energy conservation, high safety, low cost and capability of stable operation of florescent lamps.

Description

Capacitive energy-saving fluorescent lamp ballast

The utility model relates to a kind of ballast, particularly a kind of capacitive power saving fluorescent lamp ballast.

The energy-conservation capacitive character fluorescent lamp ballast of a kind of tunable optical is disclosed in the Chinese patent (patent No. 90204843.0), there is following shortcoming in it: 1. can make the operating current of light pipe surpass its rated current and damage light pipe, and the electric capacity that adopts is 2.6F and 1.0F, and price is very expensive; 2. induction reactance is much larger than capacitive reactance, thus can not export reactive power to electrical network, can only be from the electrical network absorbing reactive power, and security reliability is all relatively poor.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art part and provides a kind of self power consumption the least possible, and cost is low, and is safe and reliable, and can send the capacitive power saving fluorescent lamp ballast of reactive power to electrical network.

The purpose of this utility model can reach by following measure: the utility model comprises casing, is positioned at the binding post on the casing, it is characterized in that: the end of terminal and limiting capacitor C joins, the end of terminal and discharge resistance R joins, the end of terminal and stabilizing inducatnce L joins, and the other end of capacitor C, resistance R, three elements of inductance L is connected together.

The purpose of this utility model can also reach by following measure: the value of 15W fluorescent lamp employing inductance L is that the value of 0.22H, capacitor C is 4.5 μ F, the value of 20W fluorescent lamp employing L is that the value of 0.27H, C is 4.5 μ F, the value of 30W fluorescent lamp employing L is that the value of 0.48H, C is 4.75 μ F, and the value of 40W fluorescent lamp employing L is that the value of 0.6H, C is 5.0 μ F.

Fig. 1 is a shape assumption diagram of the present utility model;

Fig. 2 is an electrical schematic diagram of the present utility model;

Fig. 3 is the utility model circuit interconnect pattern in actual use.

Shown in accompanying drawing 1～accompanying drawing 3, the utility model has a casing 1, and three binding posts are arranged on the casing.Wherein the terminal of No. 2 terminals and inner cut-off current C joins, and the end of No. 3 terminals and discharge resistance R joins, and the end of No. 4 terminals and inductor rectifier L joins, and the another terminal of C, R, L links together jointly.The selection of the value of current limiting capacitance C and stabilizing inducatnce L with the operating current that guarantees light pipe near its rated current, light pipe does not take place under the prerequisite of stroboscopic phenomenon, make as far as possible little coupling of power consumption of inductance coil, fluorescent lamp ballast for different capacity, recommend to adopt following reference value, to reach maximum energy-saving effect.

Adapted fluorescence inductance coil (L) capacitor (C)

Lamp power inductance value rated current capacitance magnitude of voltage

（W）（H）（A）（μF）（V）

15 0.22 0.4 4.5 400

20 0.27 0.4 4.5 400

30 0.48 0.5 4.75 400

40 0.60 0.6 5.0 400

During use, double-throw switch K(of series connection is if need terminal 1 and 2 short circuits with single-throw switch between alternating current 220V power firestreak A end and the utility model binding post 2,3), moving contact, the terminal 3 that terminal 2 connects K switch connects a fixed contact of switch, another fixed contact of power firestreak A termination K switch.The connection of connector 4, starter S, fluorescent lamp Y and zero-power line is identical with the connection line of general fluorescent lamp.When the moving contact of K switch is invested mains side, electric current forms the loop by capacitor C, inductance L, fluorescent lamp Y filament, starter S to zero line, when starter S starts the back automatic disconnection, fluorescent lamp Y lights, this moment, capacitor C both end voltage was higher, but power consumption is few, inductance coil L is less because of inductance, has only lower voltage, like this power (I not only on inductance coil ²R) value reduces to reduce because of resistance, and core loss also reduces because of voltage is low, thereby reaches purpose of energy saving.This moment, resistance R only had end to be connected with circuit, so no current is not by consuming energy.Optimizing the matching value of capacitor C and inductance L, is the key that obtains maximum energy-saving effect.After turning off the light, switch movable contact and discharge resistance R form discharge loop, when the discharge resistance value of selecting for use is no more than 500K Ω, can discharge into capacitor below the safe voltage in 10 seconds, thereby the personnel that prevent are by the accident of hitting.

Experiment shows, according to top listed inductance, the capacitive Energy-saving ballast that capacitance constitutes, to the 40W fluorescent lamp, circuit, the comparable perceptual ballast of self power consumption of the present utility model reduces more than 55%, and for 30W and following fluorescent lamp circuit, the utility model will economize on electricity more.

The utility model has following advantage compared to existing technology:

1. adopt capacitive reactance greater than induction reactance, so when work, can send reactive power to electrical network, improve the power factor (PF) of electrical network.

2. energy-saving effect is outstanding, and is simple in structure, safe and reliable, with low cost, can guarantee the luminous flux of fluorescent lamp, and it is stably worked.

Claims

1, a kind of capacitive power saving fluorescent lamp ballast, comprise casing 1, be positioned at the binding post 2,3,4 on the casing, it is characterized in that: terminal 2 joins with the end of limiting capacitor C, terminal 3 joins with the end of discharge resistance R, terminal 4 joins with the end of stabilizing inducatnce L, and the other end of capacitor C, resistance R, three elements of inductance L is connected together.

2, ballast according to claim 1, it is characterized in that: the value of 15W fluorescent lamp employing inductance L is that the value of 0.22H, capacitor C is 4.5 μ F, the value of 20W fluorescent lamp employing L is that the value of 0.27H, C is 4.5 μ F, the value of 30W fluorescent lamp employing L is that the value of 0.48H, C is 4.75 μ F, and the value of 40W fluorescent lamp employing L is that the value of 0.6H, C is 5.0 μ F.