CN2478308Y - Fluorescent lamp able to purifying air - Google Patents

Abstract

A fluorescent lamp capable of purifying air, composed of a lamp tube, filter, rectifier, flow-by-flow, sawtooth wave generation, oscillation, LC series resonance and discharge circuit, through filtering, rectification and flow-by-flow to obtain a stable DC charging voltage, sawtooth wave drive The oscillating circuit forms an electronic ballast through LC series resonance. While lighting the fluorescent tube, an induced voltage is generated in the series resonant circuit and discharged to the electrode through a high-frequency transformer to obtain a high voltage of more than 10,000 volts, thereby ionizing the air and generating negative ions. Playing the role of purifying air, the fluorescent lamp has good lighting effect, produces high negative ion concentration, has dual functions with one lamp, and has a wide range of applications.

Description

Fluorescent lamps that can purify the air

The utility model relates to a fluorescent lamp, in particular to an electronic device capable of simultaneously generating negative ions when the fluorescent lamp is started.

Negative ions are also known as vitamins in the air. Increasing the concentration of negative ions in the air has the functions of activating cells, purifying blood, enhancing resistance and regulating autonomic nerves. It can also achieve the purpose of purifying air, sterilizing and removing dust. In order to obtain more negative ions in the space of work and life, people have widely used various special negative ion generators, but their functions are single and the cost is high. People spend quite a long time under the light in their daily work and life, and the fluorescent lamp is used as an important lighting fixture, which has the characteristics of high brightness and energy saving. The currently popularized fluorescent lamps with electronic ballasts adopt the principle of high-frequency oscillation, which can effectively light up the fluorescent lamps and make the fluorescent lamps work normally. And the function of purifying air.

The purpose of the utility model is to provide a fluorescent lamp electronic device capable of generating negative ions at the same time when the fluorescent lamp is started, which has good lighting effects, can increase the concentration of negative ions in the air, activate human cells, and improve air quality.

The purpose of this utility model is achieved by the following technical solutions: it is composed of a fluorescent tube, a filter circuit, a rectifier circuit, a flow-by-flow circuit, a sawtooth wave generating circuit, an oscillation circuit, an LC series resonant circuit and a discharge circuit; After rectification and output to the current-by-flow circuit, the sawtooth wave voltage is generated by the sawtooth wave generator circuit after reducing the third and fifth harmonics, and the output terminal of the sawtooth wave generator circuit is connected to the oscillation circuit through diode D ₈ and trigger diode DB; diode D The negative pole of ₈ is connected to the base of triode _T1 through the winding _L1 of high frequency transformer _B2 , the trigger diode DB is connected to the base of triode _T2 , and the base of triode _T2 is also connected to the winding L of high frequency transformer _{B2 2} connected, the winding _L3 in the high-frequency transformer _B2 is opposite to _L2 , and _L3 is in phase with _L1 . When _T2 is triggered and saturated, the DC voltage generates an induced voltage through the winding _L3 and transmits it to the high Winding L ₁ L ₂ of frequency transformer B ₂ , the induced electromotive force in L ₂ makes the base potential of T ₂ negative, T ₂ changes from on to off, and the induced electromotive force in L ₁ makes the base of T ₁ The pole potential becomes positive, T ₁ is saturated and conducts, and the repeated conduction alternately forms a high-frequency alternating voltage; the winding N ₃ of the high-frequency transformer B ₃ and the capacitor C ₇ are connected in the LC series resonant circuit; in the discharge circuit, the high Electrodes A and B are connected to both ends of N ₄ of the winding of frequency transformer B ₃ ; when the fluorescent lamp is lit, a high voltage of more than 10,000 volts is obtained between the two electrodes of A and B, and it is discharged into the air to generate negative ions due to ionization.

The utility model has the advantages of:

1. The circuit performance is stable and the lighting effect is good: due to the use of LC series resonant circuit and the low harmonic content, the working frequency is stable at about 30KHz, so that there is no flicker during lighting, which is close to continuous spectrum, and has a good protective effect on eyesight. The "H" standard in GB/T15144-94 "Performance Requirements for AC Electronic Ballasts for Tubular Fluorescent Lamps".

2. High negative ion concentration and obvious air purification: the negative ion concentration generated by high-voltage discharge can reach 1×10 ¹¹ ionS/SeC within 20 square meters, so that people can enjoy purified air while being illuminated.

3. Easy to manufacture and wide range of applications: Since a high-voltage discharge circuit is added on the basis of the electronic ballast circuit, the structure is simple and easy to manufacture. It can be designed as a desk lamp, chandelier or ceiling lamp, and is widely used in homes, shopping malls and schools. , units and other public places.

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the circuit schematic diagram of the utility model.

The symbols in the figure are explained as follows:

R ₁ -R ₉ , resistors C ₁ -C ₇ , capacitors T ₁ -T ₂ , triode

DB, trigger diodes D ₁ -D ₁₀ , diode D ₁₁ , high voltage silicon pillar

B ₁ , transformer B ₂ -B ₃ , high frequency transformer

Rt, thermistor Z, fluorescent lamp A-B, electrode

The fluorescent lamp capable of purifying air as shown in Figure 1 includes a fluorescent tube, a thermistor, a filter circuit, a rectifier circuit, a flow-by-stream circuit, a sawtooth wave generating circuit, an oscillation circuit, an LC series resonant circuit and a discharge circuit; the input terminal is composed of a capacitor C ₁ C ₂ and the winding N ₁ N ₂ of the transformer B ₁ form a dual Π common mode circuit. The transformer B ₁ is composed of N ₁ N ₂ winding 50 turns of enameled wire on the core frame of EE5×7, and the capacitor C ₁ string Connected to the head end of N ₁ N ₂ , the capacitor C ₂ is connected in series to the end of N ₁ N ₂ , the bridge rectifier circuit is connected to the filter circuit, and its DC output is 310V; the current-by-flow circuit consists of diodes D ₅ D ₆ D ₇ Composed of capacitors C ₃ C ₄ , the positive pole of capacitor C ₃ is connected to the positive pole of the rectifier circuit, the negative pole of capacitor C ₄ is connected to the negative pole of the rectifier circuit, and the output terminal of the current-by-flow circuit is connected to the sawtooth wave generating circuit; sawtooth wave generation The circuit consists of resistors R ₁ R ₂ R ₃ , capacitors C ₅ C ₆ , diode D ₈ and trigger diode DB. The output terminal of the sawtooth wave generating circuit is connected to the oscillating circuit through diode D ₈ and trigger diode DB; the oscillating circuit is composed of a triode T ₁ T ₂ , resistor R ₄ R ₅ R ₆ R ₇ R ₈ R ₉ , diode D ₉ D ₁₀ and inductance B ₂ , the cathode of diode D ₈ goes through resistor R ₅ and diode D ₉ one way, and the other way goes through high frequency transformer The winding _L1 and the resistor _R6 of _B2 are connected to the base of the transistor _T1 , the trigger diode DB is connected to the base of the transistor _T2 , and the base of the transistor _T2 is also connected to a diode _D10 and a resistor _R9 , The other circuit is connected with resistor R ₇ and winding L _{2 of high-frequency transformer B 2. High} -frequency transformer B ₂ is wound on a 10×6×5 magnetic ring with copper-plastic wire, and L _{1 and} L ₂ are 4 turns. L ₃ is 6 turns; LC series resonant circuit is composed of winding L ₃ of high frequency transformer B ₃ and capacitor C ₇ , one end of winding L ₃ is connected with the collector of triode T ₂ , the other end of winding L ₃ is connected with the fluorescent tube One end is connected, the other end of the fluorescent tube is connected to the capacitor C ₇ , and the high-frequency transformer B ₃ is wound on the EE core skeleton with enameled wire, where N ₃ is 210 turns, N ₄ is 2100 turns N ₃ /N ₄ is 1 /10; the discharge circuit is connected in series in the LC series resonant circuit through the winding _N3 of the high-frequency transformer _B3 ; the two ends of the fluorescent lamp are connected with thermistor Rt in parallel.

Its working principle is: after the 220V AC mains is filtered out by the filter, it is rectified by the bridge rectifier circuit to output a 310V DC voltage, and after the third and fifth harmonics are reduced by the current-by-flow circuit, it provides a smooth voltage for the sawtooth wave generating circuit. Power supply, the sawtooth wave generating circuit generates a sawtooth wave voltage, which is charged to _C5 through _R1 , when the charging voltage of the sawtooth wave reaches the trigger voltage of the trigger diode DB, the trigger diode DB avalanche conducts, and the power switch in the oscillation circuit Transistor T ₂ provides the base current and turns it on, and the DC voltage generates an induced voltage through the winding L ₃ of the high-frequency transformer B ₂ and transmits it to the winding L ₁ L ₂ of the high-frequency transformer B ₂ , because L ₃ and L ₂ is anti-phase and L ₃ is in phase with L ₁ , the induced electromotive force in L ₂ makes the base potential of T ₂ negative, T ₂ changes from on to off, and the induced electromotive force in L ₁ makes the base of T ₁ When the pole potential becomes positive, T ₁ is immediately saturated and turned on, so that the cycle of alternating conduction forms a high-frequency alternating voltage, which provides normal working voltage to the fluorescent lamp through the series resonant circuit composed of C ₇ and L ₃ , so that the fluorescent lamp starts. While the fluorescent lamp is on, the induced voltage is obtained on the winding _N4 of the high-frequency transformer _B3 , and after being rectified by the high-voltage silicon column _D11 , a high voltage of more than 10,000 volts is obtained between the electrodes A and B, and is sent to the air Discharge produces negative ions due to ionization. This product can achieve fresh air where there is light.

Claims (5)

1, a kind of fluorescent lamp that can purify air, comprise fluorescent tube, electric ballast and thermistor, it is characterized in that also comprising: filter circuit, rectification circuit, current follow-up circuit, saw-tooth wave generating circuit, oscillating circuit, LC series resonant circuit and discharge circuit; Filtered electrical routing capacitor C ₁C ₂With transformer B ₁Form, the 220V civil power links to each other with bridge rectifier through filter circuit; Current follow-up circuit is by diode D ₅D ₆D ₇With capacitor C ₃C ₄Form capacitor C ₃Positive pole and the positive pole of rectification circuit join capacitor C ₄Negative pole and the negative pole of rectification circuit join, the output of current follow-up circuit links to each other with saw-tooth wave generating circuit; Saw-tooth wave generating circuit is by resistance R ₁R ₂R ₃, capacitor C ₅C ₆, diac DB and diode D ₈Form, the output of saw-tooth wave generating circuit is through diac DB and diode D ₈Link to each other with oscillating circuit; Oscillating circuit is by triode T ₁T ₂, resistance R ₄R ₅R ₆R ₇R ₈R ₉, diode D ₉D ₁₀With inductance B ₂Form diode D ₈Negative pole one tunnel through resistance R ₅With diode D ₉, another road is through high frequency transformer B ₂Winding L ₁And resistance R ₆With triode T ₁Base stage link to each other diac DB and triode T ₂Base stage link to each other triode T ₂Base stage also Yu Yilu be connected with diode D ₁₀And resistance R ₉, be connected with resistance R in another road ₇With high frequency transformer B ₂Winding L ₂The LC series resonant circuit is by high frequency transformer B ₃Winding L ₃With capacitor C ₇Form winding L ₃An end and triode T ₂Collector electrode link to each other winding L ₃The other end and an end of fluorescent tube join the other end of fluorescent tube and capacitor C ₇Link to each other; Discharge circuit is through high frequency transformer B ₃Winding N ₃Be connected in the LC series resonant circuit; The two ends of fluorescent lamp also are connected to thermistor Rt.

2, a kind of fluorescent lamp that can purify air according to claim 1 is characterized in that: high frequency transformer B ₂In winding L ₃With L ₂Anti-phase, L ₃With L ₁Homophase.

3, a kind of fluorescent lamp that can purify air according to claim 1 is characterized in that: set pair of electrodes A, B in the discharge circuit, and through a high pressure silicon post D ₁₁Be connected high frequency transformer B ₃Winding N ₄Two ends.

4, a kind of fluorescent lamp that can purify air according to claim 1, it is characterized in that: the operating frequency of oscillating circuit is 28-40KHz.

5, according to claim 1 or 3 described a kind of fluorescent lamps that can purify air, it is characterized in that: high frequency transformer B ₃In winding N ₃With N ₄Turn ratio be 1/7-1/15.

Images