CN2689648Y

CN2689648Y - Electric power saver of light

Info

Publication number: CN2689648Y
Application number: CN 200420025529
Authority: CN
Inventors: 董志方; 朱正彪
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-16
Filing date: 2004-03-16
Publication date: 2005-03-30
Anticipated expiration: 2014-03-16

Abstract

The utility model discloses an electric power saver of lamplight, comprising an AC power supply, a voltage transformation unit, a sampling circuit, and a control circuit composed of a single chip computer and peripheral circuits of the single chip. Computer the voltage transformation unit is a voltage transformer circuit, and the secondary stage of the voltage transformer is connected in series in the load loop. The utility model is characterized in that the electric power saver of lamplight also comprises a bypass circuit, and the bypass circuit comprises two groups of contactors which are respectively connected with two contact points of the relay, wherein, the normally closed contact point of each contactor is connected in series in the loop of the control coil of the other contactor, and the control terminal of the relay is connected with the output terminal of the single chip computer; one of the contactor is provided with two groups of normally open contact points which are respectively connected with the primary stage and the secondary stage of the voltage transformer in parallel, and the other contactor is provided with a group of normally open contacts which are connected with the primary stage of the voltage transformer in series. The utility model can provide the control of the electric power saving and can simultaneously guarantee the normal start of lamps; the electric power saver of lamplight is applicable to single phase and three phase circuits.

Description

The light electricity-saving appliance

Technical field

The utility model relates to a kind of electricity-saving appliance, is specifically related to a kind of electricity-saving appliance that is used for gas discharge class light fixture that adopts voltage transformer circuit to realize.

Background technology

At present, the industrial and mineral enterprises and institutions of China's majority and each big supermarket, public place such as market, used lighting all is that the life-span is long, the gas light fixture of the simple Inductive ballast of wiring such as fluorescent lamp etc., this class light fixture generally uses Inductive ballast, but use Inductive ballast can cause the power factor of circuit to reduce, reactive loss is too much, cause waste of electric energy, the gas light fixture only needs high voltage when starter simultaneously, and when operate as normal, have a constant low voltage to keep, and present circuit voltage generally remains unchanged, thereby causes bigger electrical loss when operate as normal.

Aspect the power factor (PF) adjustment, can realize with the method that inserts building-out capacitor; And the adjustment circuit voltage generally adopts the SCR control adjustment, plays the effect of economize on electricity, but because what adopt that controllable silicon uses is phase control techniques, can produce more harmonic wave, disturbs the operate as normal of other machines.

For addressing this problem, a kind of intelligent lamp light electricity saving device is disclosed among the China utility model patent CN2586328Y, it comprises voltage transformation unit, sample circuit, capacitor compensating circuit and the control circuit that is made of single-chip microcomputer and peripheral circuit thereof, wherein voltage transformation unit is made up of the secondary instrument transformer, compensating circuit is made up of the circuit of the controllable silicon series capacitance of a plurality of parallel connections, it also is connected to bypass protection circuit simultaneously, and it comprises contactor and its normally-closed contact, and they are series between power supply and the load; This circuit utilizes single chip machine controlling circuit to insert the number of compensating circuit according to the data of sample circuit, comes the power factor value of regulating circuit when inserting different loads with this.In this technical scheme, voltage control when having adopted voltage transformer to realize startup and operate as normal, and the normal power supply of the bypass circuit that is provided with contactor J1 control when guaranteeing the electricity-saving appliance internal fault, to improve the coefficient of safety of circuit, can satisfy the needs of economize on electricity to a certain extent.Yet bypass is only just worked when the electricity-saving appliance internal fault, and when starting, voltage transformer is that the short circuit by primary return comes to provide higher operating voltage to load, thereby work is stable inadequately, light fixture easily takes place start problems such as undesired.

Summary of the invention

The utility model purpose provides a kind of light electricity-saving appliance that adopts the mutual inductance type transformer technology, by the improvement of circuit, guarantees the normal startup of light fixture, and load can operate as normal when breaking down;

Another purpose of the present utility model provides a kind of light electricity-saving appliance that is applied to the three phase supply occasion, guarantees the operate as normal of load when open-phase fault takes place.

For achieving the above object, the technical solution adopted in the utility model is: a kind of light electricity-saving appliance, comprise AC power, voltage transformation unit, sample circuit, the control circuit that constitutes by single-chip microcomputer and peripheral circuit thereof, described voltage transformation unit is a voltage transformer circuit, the secondary of voltage transformer is series in the load circuit, also include bypass circuit, described bypass circuit comprises the two winding tentaculums that are connected with two contacts of relay respectively, wherein the normally-closed contact of each contactor is series in the control coil loop of another contactor, and the control end of relay is connected with the output in single-chip microcomputer loop; A contactor has two groups of normally opened contacts, and the primary and secondary with voltage transformer is connected in parallel respectively, and another contactor has one group of normally opened contact, is connected in series with the elementary of voltage transformer.

In the technique scheme, described sample circuit is an electric current mutual inductance sample circuit, and its output is connected to the input of single-chip microcomputer after the A/D conversion.

The technical program goes for single-phase and three-phase circuit, when described AC power is single phase poaer supply, is provided with a described voltage transformer, and every group of normally opened contact number of described contactor is one.

When described AC power is three phase mains, be provided with 3 described voltage transformers, be connected in the three phase mains loop, described every group of normally opened contact is 3, is connected in 3 voltage transformer circuits with the structure that claim 1 was limited respectively.

For three-phase circuit; further technical scheme is; also include the open-phase protection loop that connects phase line and relay; described open-phase protection loop is made of two contactors; the control coil of one of them contactor is series between a phase line and the zero line; the control coil of another contactor is series between another phase line and the zero line behind the normally opened contact of two contactors of parallel connection; one mutually by a normally opened contact; second mutually by a normally-closed contact and another normally opened contact, and third phase is connected to an end of relay by two normally-closed contacts.

Because the technique scheme utilization, the utility model compared with prior art has following advantage:

1. because the utility model is provided with two contactors of relay control, constitute the bypass circuit of voltage transformer by the normally opened contact of contactor, when light fixture starts, the control system control relay is connected bypass circuit, guarantees that light fixture starts under higher voltage, and during operate as normal, bypass circuit disconnects, voltage transformer inserts, and enters electricity-saving state, thereby has guaranteed the normal startup of light fixture.

2. when using in three-phase circuit, the utility model is provided with open-phase protection circuit, when opening circuit mutually, utilizes the permutation and combination of contactor when a certain, and it is electric to make that the Bypass Control circuit gets, and circuit can operate as normal.

3. during economize on electricity control circuit partial fault of the present utility model, relay can enter bypass condition automatically, makes light fixture operate as normal under normal state.

Description of drawings

Accompanying drawing 1 is the schematic block circuit diagram of the utility model embodiment one;

Accompanying drawing 2 is the theory diagram of control circuit part among Fig. 1;

Accompanying drawing 3 is the circuit theory schematic diagram (control circuit does not draw) of embodiment one;

Accompanying drawing 4 is the circuit theory schematic diagram (control circuit does not draw) of embodiment two;

Embodiment

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment one: referring to accompanying drawing 1 to shown in the accompanying drawing 3, a kind of light electricity-saving appliance, comprise AC power, voltage transformation unit, sample circuit, the control circuit that constitutes by single-chip microcomputer and peripheral circuit thereof, described AC power is a single phase poaer supply, described voltage transformation unit is a voltage transformer circuit, the secondary of voltage transformer TC1 is series in the load circuit, also include bypass circuit, described bypass circuit comprises two winding tentaculum KM1 and the KM2 that are connected with two contacts of relay J 1 respectively, wherein the normally-closed contact of contactor KM1 is series in the control coil loop of another contactor KM2, and be connected with the normally opened contact of relay J 1, the normally-closed contact of contactor KM2 is series in the control coil loop of contactor KM1, and be connected with the normally-closed contact of relay J 1, the control end of relay J 1 is connected with the output in single-chip microcomputer loop; Contactor KM1 has two groups of normally opened contacts, and the primary and secondary with voltage transformer TC1 is connected in parallel respectively, and another contactor KM2 has one group of normally opened contact, is connected in series with the elementary of voltage transformer TC1.In load circuit, be provided with sample circuit by current transformer, its output is connected to the input of single-chip microcomputer after the A/D conversion.

Embodiment two: shown in accompanying drawing 4, a kind of light electricity-saving appliance, comprise AC power, voltage transformation unit, sample circuit, the control circuit that constitutes by single-chip microcomputer and peripheral circuit thereof, described AC power is a three phase mains, described voltage transformation unit is a voltage transformer circuit, be provided with 3 described voltage transformer TC1, TC2, TC3, be connected in the three phase mains loop, also include bypass circuit, described bypass circuit comprises two winding tentaculum KM1 and the KM2 that are connected with two contacts of relay J 1 respectively, wherein the normally-closed contact of contactor KM1 is series in the control coil loop of another contactor KM2, and be connected with the normally opened contact of relay J 1, the normally-closed contact of contactor KM2 is series in the control coil loop of contactor KM1, and be connected with the normally-closed contact of relay J 1, the control end of relay J 1 is connected with the output in single-chip microcomputer loop; Voltage transformer TC1 secondary is series in the load circuit of A phase, voltage transformer TC2 secondary is series in the load circuit of B phase, voltage transformer TC3 secondary is series in the load circuit of C phase, contactor KM1 has two groups of normally opened contacts, every group of normally opened contact is 3, primary and secondary with voltage transformer TC1, TC2, TC3 is connected in parallel respectively, and another contactor KM2 has one group of 3 normally opened contact, is connected in series with the elementary of voltage transformer TC1, TC2, TC3 respectively.In A phase load loop, be provided with sample circuit by current transformer, its output is connected to the input of single-chip microcomputer after the A/D conversion.

Also include the open-phase protection loop that connects phase line and relay in the present embodiment; described open-phase protection loop is made of two contactor KM3, KM4; the control coil of one of them contactor KM4 is series between B phase line and the zero line; the control coil of another contactor KM3 is series between another phase line and the zero line behind the normally opened contact of two contactor KM3, KM4 of parallel connection; A is mutually by a normally opened contact KM3; by a normally-closed contact KM3 and another normally opened contact KM4, C is connected to an end of relay J 1 to B by two normally-closed contact KM3, KM4 mutually.

Claims

1. light electricity-saving appliance, comprise AC power, voltage transformation unit, sample circuit, the control circuit that constitutes by single-chip microcomputer and peripheral circuit thereof, described voltage transformation unit is a voltage transformer circuit, the secondary of voltage transformer is series in the load circuit, it is characterized in that: also include bypass circuit, described bypass circuit comprises the two winding tentaculum [KM1 that are connected with two contacts of relay [J1] respectively, KM2], wherein the normally-closed contact of each contactor is series in the control coil loop of another contactor, and the control end of relay [J1] is connected with the output in single-chip microcomputer loop; A contactor [KM1] has two groups of normally opened contacts, and the primary and secondary with voltage transformer is connected in parallel respectively, and another contactor [KM2] has one group of normally opened contact, is connected in series with the elementary of voltage transformer.

2. light electricity-saving appliance according to claim 1 is characterized in that: described sample circuit is an electric current mutual inductance sample circuit, and its output is connected to the input of single-chip microcomputer after the A/D conversion.

3. light electricity-saving appliance according to claim 1 is characterized in that: described AC power is a single phase poaer supply, is provided with a described voltage transformer [TC1], and every group of normally opened contact number of described contactor is one.

4. light electricity-saving appliance according to claim 1, it is characterized in that: described AC power is a three phase mains, be provided with 3 described voltage transformers [TC1, TC2, TC3], be connected in the three phase mains loop, described every group of normally opened contact is 3, is connected in 3 voltage transformer circuits with the structure that claim 1 was limited respectively.

5. light electricity-saving appliance according to claim 4; it is characterized in that: also include the open-phase protection loop that connects phase line and relay; described open-phase protection loop is by two contactor [KM3; KM4] constitute; the control coil of one of them contactor is series between a phase line and the zero line; the control coil of another contactor is series between another phase line and the zero line behind the normally opened contact of two contactors of parallel connection; one mutually by a normally opened contact; second mutually by a normally-closed contact and another normally opened contact, and third phase is connected to an end of relay by two normally-closed contacts.