CN212305703U

CN212305703U - Inductance type ballast and lighting equipment

Info

Publication number: CN212305703U
Application number: CN202021269683.8U
Authority: CN
Inventors: 刘永旌; 刘航
Original assignee: Shanghai Hongyi Lighting Appliance Co ltd
Current assignee: Shanghai Hongyi Lighting Appliance Co ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-01-05
Anticipated expiration: 2030-07-02

Abstract

The utility model provides an inductance type ballast, which is respectively externally connected with a capacitor and a lighting lamp; the ballast comprises a coil and an iron core, wherein the coil is wound on the iron core; the coil comprises three windings; two ends of the first winding are respectively connected with an alternating current power supply, and one end of the first winding is sequentially connected with the second winding, the first capacitor, the first illuminating lamp and finally a tap of the first winding; the other end of the first winding is connected with the third wire group, the second capacitor, the second illuminating lamp and finally a tap of the first winding; the utility model discloses when rated input alternating voltage 380V, through the preparation mode that changes one and drags two inductance type ballasts and with the connected mode of light, reduced the current value that flows on the ballast coil intermediate winding for the coil of ballast can adopt thinner winding, thereby has reduced material cost, has improved the availability factor, has greatly improved the product and has synthesized the price/performance ratio.

Description

Inductance type ballast and lighting equipment

Technical Field

The utility model relates to a lighting apparatus control's relevant technical field especially relates to an inductance type ballast for gas discharge lamp.

Background

In recent years, lighting electric appliances have wide market prospects, and street lamp lighting, stadium lighting, floodlighting, industrial and mining lighting and fish-lured lamp lighting are rapidly developed, and many of the lighting adopts gas discharge lamps. With the popularization of gas discharge lamps, especially the wide application of high-power gas discharge lamps, inductive ballasts matched with the gas discharge lamps are also widely applied. When the rated alternating voltage is 220V input, a zero line and larger current are required to pass through an input wire, the material is consumed, and the electric loss is increased, so that the application of the rated 380V input alternating voltage is more and more extensive.

Figures 1 and 2 are circuit diagrams of two commonly used one-to-two type inductive ballasts on the market,

referring to fig. 1, when the input rated voltage is ac 220V, the voltage of 220V is boosted by the winding 2 or the winding 3 to reach the voltage suitable for the Lamp, and the capacitor supplies power to the first Lamp1 or the second Lamp 2; however, when the input rated voltage is 380V, 380V is boosted by the winding 2 or the winding 3, and the voltage at this time is too high to be suitable for the lamp, so that the scheme of fig. 2 is generally adopted when the rated input voltage is 380V.

Referring to fig. 2, in the scheme, a winding 1 is divided into two parts, namely a winding 1-a and a winding 1-B, an input voltage is divided into voltages on the winding 1-B, the divided voltages are boosted through the winding 2 or the winding 3, and then the voltages are supplied to a first Lamp1 or a second Lamp2 through a capacitor.

Taking the ballast with two 2KW lamps as an example, the conventional 2KW Lamp voltage is 230V for analysis, and the current value I of the first Lamp Lamp1 at the moment₂And the current value I of the second Lamp Lamp2₃The calculation formula of (2) is as follows:

I₂＝I₃lamp power/operating voltage of the lamp/lamp power factor; wherein, the power is 2KW, the working voltage of the lamp is 230V, and the power factor is 0.95, thereby obtaining I₂＝I₃＝2000W/230V/0.95＝9.15A；

Of windings 1-AInput current I_1-AThe calculation formula of (2) is as follows:

I_1-Atotal power/rated voltage/lamp power factor/line efficiency; wherein the total power is 4KW, the rated voltage is 380V, the power factor is 0.95, and the line efficiency is 0.95, thereby obtaining I_1-A＝4000W/380V/0.95/0.95＝11.66A；

Input current I of winding 1-B according to kirchhoff's law_1-BIs calculated by the formula I_1-B＝I_1-A-I₂-I₃11.66A-9.15A-6.64A. Because of the non-linear load, the effective value of the current can not be completely applied to the law, and the effective value of the measured current is about 7A. Through the analysis, the fact that the winding 1-A flows large current 11.66A, the winding 1-B also flows current 7A, and the current can be applied only by using a thick enameled wire is obtained, so that the material cost is increased.

Disclosure of Invention

In view of the above shortcomings of the prior art, an object of the present invention is to provide an inductive ballast and a lighting device for solving the problem of high material cost required by the inductive ballast in the prior art.

In order to achieve the above and other related objects, the present invention provides an inductive ballast, which is externally connected with a first capacitor, a second capacitor, a first lamp and a second lamp, respectively, wherein the ballast comprises a coil and an iron core, and the coil is wound on the iron core;

the coil comprises three windings; two ends of the first winding are respectively connected with an alternating current power supply, one end of the first winding is connected with one end of the second winding, the other end of the second winding is connected with one end of the first capacitor, the other end of the first capacitor is connected with one end of the first illuminating lamp, and the other end of the first illuminating lamp is connected with a tap of the first winding;

the other end of the first winding is connected with one end of the third winding, one end of the third winding is connected with one end of the second capacitor, the other end of the second capacitor is connected with one end of the second illuminating lamp, and the other end of the second illuminating lamp is connected with a tap of the first winding.

In an embodiment of the present invention, the tap of the first winding is a center tap.

In an embodiment of the present invention, the first illuminating lamp and the second illuminating lamp are gas discharge lamps.

The utility model discloses still relate to a lighting apparatus, this lighting apparatus includes first electric capacity, second electric capacity, first light, second light and if the utility model discloses an inductance type ballast in arbitrary one.

As above, the utility model discloses an inductance type ballast, when rated input alternating voltage 380V, through the connected mode who changes one and drags two inductance type ballasts and light, has reduced the current value that flows on the ballast coil intermediate winding for the coil of ballast can adopt thinner winding, thereby has reduced material cost, has improved the availability factor, has greatly improved the product and has synthesized the price/performance ratio.

Drawings

Fig. 1 shows a wiring diagram of an inductive ballast with an input voltage of 220V as disclosed in the prior art of the present invention.

Fig. 2 shows a wiring diagram of an inductive ballast with 380V input voltage disclosed in the prior art of the present invention.

Fig. 3 shows a wiring diagram of the inductive ballast disclosed in the embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

Referring to fig. 3, the present invention provides an inductive ballast, which is externally connected to a first capacitor C7, a second capacitor C8, a first Lamp1 and a second Lamp 2; the first Lamp1 and the second Lamp2 are both gas discharge lamps.

The ballast comprises a coil and an iron core, wherein a framework or an insulator is arranged between the coil and the iron core, and the coil is wound on the iron core through the framework or the insulator.

The coil comprises three windings; the first winding is divided into a winding 1-A and a winding 1-B, and the joint of the winding 1-A and the winding 1-B is a tap of the first winding.

Two ends of the first winding are respectively connected with an alternating current power supply; one end of the winding 1-A is connected with one end of the second winding, the other end of the second winding is connected with one end of a first capacitor C7, the other end of the first capacitor C7 is connected with one end of a first illuminating Lamp1, and the other end of the first illuminating Lamp1 is connected with a tap of the first winding;

one end of the winding 1-B is connected with one end of a third winding, the other end of the third winding is connected with one end of a second capacitor C8, the other end of the second capacitor C8 is connected with one end of a second Lamp2, and the other end of the second Lamp2 is connected with a tap of the first winding.

It should be noted that in this embodiment, the power of the two lamps is required to be the same, the first winding is set to be divided into the winding 1-a and the winding 1-B, and the tap of the first winding is the center tap, in practical use, the ratio of the winding 1-a and the winding 1-B can be configured according to the power requirement of the lamps, but the difference between the two windings does not exceed 10% of the total number of turns, otherwise, the current passing through each wire cell is very different, and the effect of saving materials cannot be achieved. The second winding and the third winding play the role of boosting and ballasting, generally calculated by the lamp voltage 230, the no-load voltage applied to the lamp is 330-430.

The ballast is provided with two illuminating lamps, the input rated voltage is alternating current 380V, the power of the illuminating lamps is 2KW, and the lamp voltage is 230V, for example, analysis is carried out:

the voltage on the winding 1-A and the winding 1-B is uniformly divided into 380V/2 which is 190V, after the voltage is boosted by the second winding and the third winding, the first capacitor C7 supplies power for the first Lamp1, and the second capacitor C8 supplies power for the second Lamp 2;

at this time, the current value I of the first Lamp Lamp1₂And the current value I of the second Lamp Lamp2₃The calculation formula of (2) is as follows:

The input current I of the first winding is calculated by the formula:

i-total power/rated voltage/lamp power factor/line efficiency; wherein, the total power is 4KW, the rated voltage is 380V, the power factor is 0.95, and the line efficiency is 0.95, so as to obtain I4000W/380V/0.95/0.95I 11.66A;

current value I of winding 1-A according to kirchhoff's law_1-AThe calculation formula of (2) is as follows:

I_1-A＝I-I₂11.66A-9.15A-2.51A; similarly, the current value I of winding 1-B_1-BAlso 2.51A. Because of the non-linear load, the effective value of the current cannot be fully applied to the law, and the effective value of the measured current of the winding 1-A and the winding 1-B is about 3.2A. From the above analysis, it can be seen that the winding 1-A of the embodiment of FIG. 2 has a large current value of 11.66A, the winding 1-B has a current value of 7A, and the windings 1-A and 1-B of the embodiment of FIG. 3 have a current value of 3.2A. It can be seen that the value of the current flowing through the first winding in the present embodiment is much smaller than the values of the current flowing through the windings 1-a and 1-B in the embodiment of fig. 2.

The present invention also relates to a lighting device comprising a first capacitor C7, a second capacitor C8, a first Lamp1, a second Lamp2 and any of the inductive ballasts as disclosed in the present embodiment.

To sum up, the utility model discloses an inductance type ballast, when rated input alternating voltage 380V, through the connected mode who changes one and drags two inductance type ballasts and light, has reduced the current value on the middle winding of the ballast coil that flows for the coil of ballast can adopt thinner winding, has lower cost, less volume, lower calorific capacity, has also improved the availability factor of product, has practiced thrift the electric energy, the comprehensive price/performance ratio of the product that greatly improves. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. An inductance type ballast is characterized in that the ballast is respectively externally connected with a first capacitor, a second capacitor, a first illuminating lamp and a second illuminating lamp, and comprises a coil and an iron core, wherein the coil is wound on the iron core;

2. An inductive ballast according to claim 1, wherein: the tap of the first winding is a center tap.

3. An inductive ballast according to claim 1, wherein: the first illuminating lamp and the second illuminating lamp are both gas discharge lamps.

4. An illumination device, characterized by: the lighting device comprises a first capacitor, a second capacitor, a first lamp, a second lamp and the inductive ballast of any of claims 1-3.