Control circuit for ultraviolet lamp air deodorization purifier

Abstract

The utility model relates to the technical field of deodorization purifiers, in particular to a control circuit for an ultraviolet lamp air deodorization purifier. The power supply circuit comprises a 220V mains supply, a resistor R1, a rectifier diode D1 and a capacitor C2; one end of the 220V commercial power is electrically connected with one end of the capacitor C2 through the rectifier diode D1, and the other end of the 220V commercial power is electrically connected with the other end of the capacitor C2 through the resistor R1; the switching circuit comprises a triode Q1, a resistor R3, a resistor R2, a resistor R4, a rectifier tube D2 and a capacitor C1; the collector electrode of the triode Q1 is electrically connected with the cathode of the rectifier diode D1 through the resistor R3, the base electrode of the triode Q1 is electrically connected with one end of the resistor R1 through the resistor R4, the rectifier diode D2 and the capacitor C1, and the emitter electrode of the triode Q1 is also electrically connected with one end of the resistor R1.

Description

TECHNICAL FIELD

[0001] The utility model relates to deodorization purifier technical field, concretely is a control circuit for ultraviolet lamp air deodorization purifier. BACKGROUND

[0002] The ultraviolet lamp air deodorization purifier is a kind of equipment using the sterilization and oxidation of ultraviolet to remove the harmful substances such as peculiar smell, bacteria, virus in air;Ultraviolet lamp can destroy the DNA and RNA structure of microorganism by emitting short wave ultraviolet (200-280nm), so that it loses the ability of reproduction, thereby realizing efficient sterilization;In addition, ultraviolet lamp can excite photocatalyst, produce strong oxidation, decompose peculiar smell molecule in air;

[0003] Therefore, the ultraviolet lamp air deodorization purifier has been widely applied, but the current ultraviolet lamp air deodorization purifier, circuit design is complex, and design cost is high, thereby not too meet the needs of users. UTILITY MODEL CONTENT

[0004] The utility model provides a control circuit for ultraviolet lamp air deodorization purifier to solve above -mentioned problem.

[0005] To realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A control circuit for ultraviolet lamp air deodorization purifier, comprising:

[0007] Ultraviolet lamp;

[0008] Power supply circuit, the power supply circuit includes: commercial power 220V, resistance R1, rectifier diode D1, capacitor C2;Commercial power 220V one end passes through rectifier diode D1 and is electrically connected with the one end of capacitor C2, and the one end of commercial power 220V passes through resistance R1 and is electrically connected with the other end of capacitor C2;

[0009] Switching circuit, the switching circuit includes: triode Q1, resistance R3, resistance R2, resistance R4, rectifier tube D2, capacitor C1;The collector of triode Q1 passes through resistance R3 and is electrically connected with the cathode of rectifier diode D1, and the base of triode Q1 is electrically connected with the one end of resistance R1 through resistance R4, rectifier diode D2, capacitor C1, the emitter of triode Q1 is also electrically connected with the one end of resistance R1;

[0010] The voltage outputted by the rectifier diode D1 and the rectifier diode D2 is converted into DC 12V voltage by a voltage transformer, wherein the voltage transformer comprises a first primary winding, a second primary winding and a secondary winding; two ends of the first primary winding are electrically connected with two ends of the resistor R3 respectively, one end of the second primary winding is electrically connected with one end of the resistor R4, and the other end of the second primary winding is electrically connected with one end of the resistor R1; the secondary winding is coupled with the first primary winding and the second primary winding respectively, and two ends of the output of the secondary winding are electrically connected with the ultraviolet lamp.

[0011] As the preferred scheme of the utility model, the switch circuit further comprises a voltage stabilizing diode ZD, an anode of the voltage stabilizing diode ZD is electrically connected with one end of the capacitor C1, and a cathode of the voltage stabilizing diode ZD is electrically connected with a base of the triode Q1.

[0012] As the preferred scheme of the utility model, the voltage reducing circuit further comprises a diode D4, a capacitor C4 and a resistor R5; an anode of the diode D4 is electrically connected with one end of the secondary winding, a cathode of the diode D4 is electrically connected with one end of the capacitor C4, one end of the resistor R5 and one end of the ultraviolet lamp; the other end of the capacitor C4, the other end of the resistor R5 and the other end of the ultraviolet lamp are all electrically connected with the other end of the secondary winding.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] (1), when the input is 220V, when the voltage is positive at the top and negative at the bottom, the rectifier diode D1 is rectified, the voltage after rectification is converted into DC 12V by the first primary winding and the secondary winding, and the DC 12V is outputted to supply the ultraviolet lamp, so that the circuit is simpler and the cost is lower.

[0015] (2), when the input is 220V, when the voltage is negative at the top and positive at the bottom, the rectifier diode D2 is rectified, the voltage after rectification is converted into DC 12V by the second primary winding and the secondary winding after the triode Q1 is turned on, and the DC 12V is outputted to supply the ultraviolet lamp, so that the circuit is simpler and the cost is lower. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The utility model discloses a working principle diagram. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0018] Embodiments, please refer to Figure 1 The utility model provides a technical scheme:

[0019] A control circuit for ultraviolet lamp air deodorization purifier, include:

[0020] Ultraviolet lamp;

[0021] Power supply circuit, the power supply circuit includes: commercial power 220V, resistance R1, rectifier diode D1, electric capacity C2, one end of commercial power 220V is connected with one end of electric capacity C2 through rectifier diode D1, one end of commercial power 220V is connected with the other end of electric capacity C2 through resistance R1,

[0022] Switching circuit, the switching circuit includes: triode Q1, resistance R3, resistance R2, resistance R4, rectifier tube D2, electric capacity C1, the collector of triode Q1 is connected with the cathode of rectifier diode D1 through resistance R3, the base of triode Q1 is connected with one end of resistance R1 through resistance R4, rectifier diode D2, electric capacity C1, the emitter of triode Q1 is also connected with one end of resistance R1,

[0023] Buck circuit, the buck circuit includes transformer, and transformer is used to the voltage that 220V voltage is output through rectifier diode D1, rectifier diode D2, and is changed into DC12V voltage, the transformer includes first primary winding, second primary winding, secondary winding, two ends of the first primary winding are electrically connected with two ends of resistance R3 respectively, one end of the second primary winding is electrically connected with one end of resistance R4, the other end of the second primary winding is electrically connected with one end of resistance R1, the secondary winding is coupled with the first primary winding and the second primary winding respectively, and the output two ends of the secondary winding are electrically connected with the ultraviolet lamp,

[0024] When input commercial power 220V, when the voltage is positive on the top and negative on the bottom, then rectify through rectifier diode D1, the voltage after rectification is changed into DC12V through the first primary winding and the secondary winding, and the DC12V is output to supply the ultraviolet lamp to work;

[0025] When inputting the commercial power 220V, when the voltage is positive on the top and negative on the bottom, rectification is carried out through the rectifier diode D2, the voltage after rectification is conducted through the triode Q1, and DC 12V is outputted to supply the ultraviolet lamp to work after the voltage is transformed from the second primary winding and the secondary winding.

[0026] With reference to Figure 1 In the embodiment, the switching circuit further comprises a Zener diode ZD, an anode of the Zener diode ZD is electrically connected with one end of the capacitor C1, and a cathode of the Zener diode ZD is electrically connected with a base of the triode Q1.

[0027] The Zener diode ZD is used to stabilize the base working voltage of the triode Q1, so as to stabilize the conduction of the triode Q1.

[0028] With reference to Figure 1 In the embodiment, the voltage reduction circuit further comprises a diode D4, a capacitor C4 and a resistor R5, an anode of the diode D4 is electrically connected with one end of the secondary winding, a cathode of the diode D4 is electrically connected with one end of the capacitor C4, one end of the resistor R5 and one end of the ultraviolet lamp, the other end of the capacitor C4, the other end of the resistor R5 and the other end of the ultraviolet lamp are all electrically connected with the other end of the secondary winding.

[0029] The diode D4 is a Schottky diode, which is used to prevent reverse current and protect the output circuit, and the capacitor C4 is an output filter capacitor, which is used to smooth the output voltage.

[0030] The beneficial effects of the utility model are as follows:

[0031] (1) when inputting the commercial power 220V, when the voltage is positive on the top and negative on the bottom, rectification is carried out through the rectifier diode D1, the voltage after rectification is conducted through the first primary winding and the secondary winding, and DC 12V is outputted to supply the ultraviolet lamp to work;

[0032] (2) when inputting the commercial power 220V, when the voltage is negative on the top and positive on the bottom, rectification is carried out through the rectifier diode D2, the voltage after rectification is conducted through the triode Q1, and DC 12V is outputted to supply the ultraviolet lamp to work after the voltage is transformed from the second primary winding and the secondary winding;

[0033] (3) repeating (1) and (2) so that the ultraviolet lamp works under the driving of the commercial power 220V.

[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A control circuit for an ultraviolet lamp air deodorizing purifier, characterized in that: It includes: UV lamp; Power supply circuit, the power supply circuit includes: 220V mains, resistor R1, rectifier diode D1, capacitor C2; one end of the 220V mains is connected with one end of the capacitor C2 through the rectifier diode D1, and one end of the 220V mains is connected with the other end of the capacitor C2 through the resistor R1; Switching circuit, the switching circuit includes: triode Q1, resistor R3, resistor R2, resistor R4, rectifier D2, capacitor C1; the collector of the triode Q1 is connected with the cathode of the rectifier diode D1 through the resistor R3, the base of the triode Q1 is connected with one end of the resistor R1 through the resistor R4, the rectifier diode D2 and the capacitor C1, and the emitter of the triode Q1 is also connected with one end of the resistor R1; The voltage output by the rectifier diode D1 and the rectifier diode D2 is converted into DC12V voltage by the transformer; the transformer includes first primary winding, second primary winding and secondary winding; the two ends of the first primary winding are connected with the two ends of the resistor R3, one end of the second primary winding is connected with one end of the resistor R4, and the other end of the second primary winding is connected with one end of the resistor R1; the secondary winding is coupled with the first primary winding and the second primary winding, and the output ends of the secondary winding are connected with the UV lamp.

2. The control circuit for the ultraviolet lamp air deodorizing purifier according to claim 1, characterized in that: The switching circuit further includes a zener diode ZD, the anode of the zener diode ZD is connected with one end of the capacitor C1, and the cathode of the zener diode ZD is connected with the base of the triode Q1.

3. The control circuit for the ultraviolet lamp air deodorizing purifier according to claim 2, characterized in that: The voltage output by the rectifier diode D1 and the rectifier diode D2 is converted into DC12V voltage by the transformer; the transformer includes first primary winding, second primary winding and secondary winding; the two ends of the first primary winding are connected with the two ends of the resistor R3, one end of the second primary winding is connected with one end of the resistor R4, and the other end of the second primary winding is connected with one end of the resistor R1; the secondary winding is coupled with the first primary winding and the second primary winding, and the output ends of the secondary winding are connected with the UV lamp. The voltage output by the rectifier diode D1 and the rectifier diode D2 is converted into DC12V voltage by the transformer; the transformer includes first primary winding, second primary winding and secondary winding; the two ends of the first primary winding are connected with the two ends of the resistor R3, one end of the second primary winding is connected with one end of the resistor R4, and the other end of the second primary winding is connected with one end of the resistor R1; the secondary winding is coupled with the first primary winding and the second primary winding, and the output ends of the secondary winding are connected with the UV lamp.

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