Fan lamp circuit convenient to externally connect with two control switches

Abstract

The utility model discloses a fan lamp circuit convenient for externally connecting two control switches, which is simple in structure and easy to realize. The alternating current input between the first live wire input end and the null line input end and the alternating current input between the second live wire input end and the null line input end are subjected to alternating current and direct current rectification, so that subsequent direct current power supply is facilitated, an alternating current and direct current conversion module does not need to be arranged subsequently, implementation is convenient, and the cost is low. Through the arrangement of the first detection module, the on-off state of the external first control switch can be conveniently judged by detecting whether electricity exists between the first live wire input end and the null line input end or not; therefore, the on-off state of the external second control switch can be conveniently judged by detecting whether there is electricity between the second live wire input end and the zero wire input end. The main control module can control the work of the controlled fan motor driving module and the controlled light source driving module according to the on-off state of the first control switch and the on-off state of the second control switch, and the practicability is good.

Description

Technical Field

[0001] The utility model relates to a fan lamp circuit which is convenient for externally connecting two control switches. Background Art

[0002] Fan lamp has both fan function and lighting function, and is becoming more and more popular among people.

[0003] The fan-lamp dual-control circuit disclosed in Chinese patent CN215830776U realizes the separate control functions of connecting the fan control switch 2 at the front end to control whether the fan is powered on, and connecting the lamp wall control switch 3 to control whether the lamp is powered on. However, the fan driving circuit and the lamp driving circuit in the scheme do not have AC / DC rectification functions. The output ends of the fan driving circuit and the lamp driving circuit output AC power respectively. Therefore, if the fan and the lamp need to be powered by DC power later, AC / DC conversion modules need to be respectively provided, that is, two AC / DC conversion modules need to be provided, which is troublesome to implement. It is necessary to solve this problem. Utility Model Content

[0004] The utility model overcomes the shortcomings of the above-mentioned technology and provides a fan lamp circuit which is convenient for externally connecting two control switches.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fan light circuit convenient for connecting two control switches externally, comprising a neutral line input terminal 1, a first live line input terminal 2 for connecting a first control switch in series when in use, a second live line input terminal 3 for connecting a second control switch in series when in use, a three-phase rectifier bridge module 4 for AC / DC conversion, a DC / DC module 5 for performing DC / DC conversion on the DC power output by the three-phase rectifier bridge module 4 so as to provide the required DC power to each module, a main control module 6, a controlled fan motor drive module 7 controlled by the main control module 6, and a controlled light controlled by the main control module 6. The source driving module 8, the first live wire input terminal 2 is connected in series with the first input terminal of the three-phase rectifier bridge module 4, the neutral wire input terminal 1 is connected in series with the second input terminal of the three-phase rectifier bridge module 4, the second live wire input terminal 3 is connected in series with the third input terminal of the three-phase rectifier bridge module 4, and the main control module 6 is respectively connected with a first detection module 91 for detecting whether there is electricity between the first live wire input terminal 2 and the neutral wire input terminal 1, and a second detection module 92 for detecting whether there is electricity between the second live wire input terminal 3 and the neutral wire input terminal 1.

[0007] Preferably, the first detection module 91 includes a resistor R1, a diode D4, and an optocoupler U1, one end of the resistor R1 is connected in series with the first live wire input terminal 2, and the other end is connected to the positive electrode of the diode D4 and the negative electrode of the light-emitting diode of the optocoupler U1, the negative electrode of the diode D4 is connected to the positive electrode of the light-emitting diode of the optocoupler U1 and the neutral line input terminal 1, the receiving tube collector of the optocoupler U1 is connected to a detection signal input terminal of the main control module 6 as the detection signal output terminal of the first detection module 91, and the receiving tube emitter of the optocoupler U1 is grounded with the ground terminal of the main control module 6.

[0008] Preferably, the second detection module 92 includes a resistor R4, a diode D6, and an optocoupler U2, one end of the resistor R4 is connected in series with the second live wire input terminal 3, and the other end is connected to the positive electrode of the diode D6 and the negative electrode of the light-emitting diode of the optocoupler U2, the negative electrode of the diode D6 is connected to the positive electrode of the light-emitting diode of the optocoupler U2 and the neutral line input terminal 1, the receiving tube collector of the optocoupler U2 is connected to a detection signal input terminal of the main control module 6 as the detection signal output terminal of the second detection module 92, and the receiving tube emitter of the optocoupler U2 is grounded with the ground terminal of the main control module 6.

[0009] Preferably, the controlled fan motor driving module 7 and the controlled light source driving module 8 respectively adopt controlled MOS tube switch circuits.

[0010] Preferably, the three-phase rectifier bridge module 4 includes a three-phase rectifier bridge 41 connected to the neutral line input terminal 1, the first live line input terminal 2, and the second live line input terminal 3, and a common-mode inductor filtering unit 42 connected between the output end of the three-phase rectifier bridge 41 and the input end of the DC / DC module 5.

[0011] Preferably, the three-phase rectifier bridge 41 includes a capacitor C1, a capacitor C4, a diode D1, a diode D2, a diode D3, a diode D5, a diode D7, and a diode D8, and the common-mode inductor filter unit 42 includes a capacitor C2, a common-mode inductor T1, and a polarity capacitor C3. The positive electrode of the diode D1 is connected to the negative electrode of the diode D8, the first end of the capacitor C1, and the first end of the capacitor C4 as the first input end of the three-phase rectifier bridge module 4, and the positive electrode of the diode D2 is connected to the negative electrode of the diode D7 and the second end of the capacitor C1 as the second input end of the three-phase rectifier bridge module 4. The positive electrode of the diode D3 is connected to the negative electrode of the diode D5 and the second end of the capacitor C4 as It is the third input end of the three-phase rectifier bridge module 4, the cathode of the diode D1 is connected to the cathode of the diode D2, the cathode of the diode D3, the first end of the capacitor C2, and the first coil input end of the common-mode inductor T1, and the first coil output end of the common-mode inductor T1 is connected to the positive end of the polarity capacitor C3 to serve as the DC voltage positive output end of the three-phase rectifier bridge module 4, the anode of the diode D8 is connected to the anode of the diode D7, the anode of the diode D5, the second end of the capacitor C2, and the second coil input end of the common-mode inductor T1, and the second coil output end of the common-mode inductor T1 is connected to the negative end of the polarity capacitor C3 to serve as the DC voltage negative output end of the three-phase rectifier bridge module 4.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The structure of this case is simple and easy to implement. The setting of the three-phase rectifier bridge module is convenient for AC-DC rectification of the AC power input between the first live wire input terminal and the neutral wire input terminal and AC-DC rectification of the AC power input between the second live wire input terminal and the neutral wire input terminal, so as to facilitate subsequent DC power supply. In this way, there is no need to set up AC-DC conversion modules separately in the subsequent process, and the implementation is convenient. The setting of the first detection module is convenient for judging the switching state of the external first control switch by detecting whether there is electricity between the first live wire input terminal and the neutral wire input terminal. The setting of the second detection module is convenient for judging the switching state of the external second control switch by detecting whether there is electricity between the second live wire input terminal and the neutral wire input terminal. In this way, the main control module is conducive to controlling the operation of the controlled fan motor drive module and the controlled light source drive module according to the switching state of the first control switch and the switching state of the second control switch, and the practicability is good.

[0014] 2. The common-mode inductor filter unit between the output end of the three-phase rectifier bridge and the input end of the DC / DC module in this case is conducive to suppressing high-frequency interference signals, improving electrical safety, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of this case.

[0016] Figure 2 This is a partial circuit schematic diagram of this case. DETAILED DESCRIPTION

[0017] The following examples further illustrate the features of the present invention and other related features to facilitate understanding by those skilled in the art:

[0018] like Figure 1 to Figure 2 As shown, a fan lamp circuit convenient for externally connecting two control switches includes a neutral line input terminal 1, a first live line input terminal 2 for connecting a first control switch in series when in use, a second live line input terminal 3 for connecting a second control switch in series when in use, a three-phase rectifier bridge module 4 for AC / DC conversion, a DC / DC module 5 for performing DC / DC conversion on the DC power output by the three-phase rectifier bridge module 4 so as to provide the required DC power to each module, a main control module 6, a controlled fan motor drive module 7 controlled by the main control module 6, and a controlled fan motor drive module 8 controlled by the main control module 8. Control the light source driving module 8, the first live wire input terminal 2 is connected in series with the first input terminal of the three-phase rectifier bridge module 4, the neutral wire input terminal 1 is connected in series with the second input terminal of the three-phase rectifier bridge module 4, the second live wire input terminal 3 is connected in series with the third input terminal of the three-phase rectifier bridge module 4, and the main control module 6 is respectively connected with a first detection module 91 for detecting whether there is electricity between the first live wire input terminal 2 and the neutral wire input terminal 1, and a second detection module 92 for detecting whether there is electricity between the second live wire input terminal 3 and the neutral wire input terminal 1.

[0019] As described above, in a specific implementation, the live wire of the external household electricity (AC power) is connected to the first live wire input terminal 2 through the first control switch, and is connected to the second live wire input terminal 3 through the second control switch, while the neutral wire is directly connected to the neutral wire input terminal 1, thereby realizing the function of two external control switches of the fan light circuit.

[0020] As described above, the structure of the present invention is simple and easy to implement. The setting of the three-phase rectifier bridge module 4 is convenient for performing AC / DC rectification on the AC power input between the first live wire input terminal 2 and the neutral wire input terminal 1 and for performing AC / DC rectification on the AC power input between the second live wire input terminal 3 and the neutral wire input terminal 1, so as to facilitate subsequent DC power supply. In this way, there is no need to separately set up AC / DC conversion modules in the subsequent process, and the implementation is convenient. The setting of the first detection module 91 is convenient for judging the switching state of the external first control switch by detecting whether there is electricity between the first live wire input terminal 2 and the neutral wire input terminal 1. The setting of the second detection module 92 is convenient for judging the switching state of the external second control switch by detecting whether there is electricity between the second live wire input terminal 3 and the neutral wire input terminal 1. In this way, the main control module 6 is beneficial for controlling the operation of the controlled fan motor drive module 7 and the controlled light source drive module 8 according to the switching state of the first control switch and the switching state of the second control switch, and the practicality is good.

[0021] like Figure 2 As shown, during the specific implementation, the first detection module 91 includes a resistor R1, a diode D4, and an optocoupler U1. One end of the resistor R1 is connected in series with the first live wire input terminal 2, and the other end is connected to the positive electrode of the diode D4 and the negative electrode of the light-emitting diode of the optocoupler U1. The negative electrode of the diode D4 is connected to the positive electrode of the light-emitting diode of the optocoupler U1 and the neutral line input terminal 1. The collector of the receiving tube of the optocoupler U1 is connected to a detection signal input terminal of the main control module 6 as the detection signal output terminal of the first detection module 91, and the emitter of the receiving tube of the optocoupler U1 is grounded with the ground terminal of the main control module 6.

[0022] As described above, when the external first control switch is turned on, AC power is input between the first live wire input terminal 2 and the neutral wire input terminal 1, and when the light-emitting diode of the optocoupler U1 is turned on, a signal is output to its receiving tube, so that the main control module 6 determines that the external first control switch is turned on, which is easy to implement.

[0023] like Figure 2 As shown, during the specific implementation, the second detection module 92 includes a resistor R4, a diode D6, and an optocoupler U2. One end of the resistor R4 is connected in series with the second live wire input terminal 3, and the other end is connected to the positive electrode of the diode D6 and the negative electrode of the light-emitting diode of the optocoupler U2. The negative electrode of the diode D6 is connected to the positive electrode of the light-emitting diode of the optocoupler U2 and the neutral line input terminal 1. The collector of the receiving tube of the optocoupler U2 is connected to a detection signal input terminal of the main control module 6 as the detection signal output terminal of the second detection module 92, and the emitter of the receiving tube of the optocoupler U2 is grounded with the ground terminal of the main control module 6.

[0024] As described above, when the external second control switch is turned on, AC power is input between the second live wire input terminal 3 and the neutral wire input terminal 1, and when the light-emitting diode of the optocoupler U2 is turned on, a signal is output to its receiving tube, so that the main control module 6 determines that the external second control switch is turned on, which is easy to implement.

[0025] As described above, in specific implementation, the controlled fan motor driving module 7 and the controlled light source driving module 8 respectively adopt controlled MOS tube switch circuits.

[0026] like Figure 2 As shown, in a specific implementation, the three-phase rectifier bridge module 4 includes a three-phase rectifier bridge 41 for connecting to the neutral line input terminal 1, the first live line input terminal 2, and the second live line input terminal 3, and a common-mode inductor filtering unit 42 connected between the output terminal of the three-phase rectifier bridge 41 and the input terminal of the DC / DC module 5.

[0027] As described above, the common-mode inductor filter unit 42 between the output end of the three-phase rectifier bridge 41 and the input end of the DC / DC module 5 in this case is conducive to suppressing high-frequency interference signals, improving electrical safety, and having good practicality.

[0028] like Figure 2 As shown, in a specific implementation, the three-phase rectifier bridge 41 includes a capacitor C1, a capacitor C4, a diode D1, a diode D2, a diode D3, a diode D5, a diode D7, and a diode D8, and the common-mode inductor filter unit 42 includes a capacitor C2, a common-mode inductor T1, and a polarity capacitor C3. The positive electrode of the diode D1 is connected to the negative electrode of the diode D8, the first end of the capacitor C1, and the first end of the capacitor C4 as the first input end of the three-phase rectifier bridge module 4, and the positive electrode of the diode D2 is connected to the negative electrode of the diode D7 and the second end of the capacitor C1 as the second input end of the three-phase rectifier bridge module 4. The positive electrode of the diode D3 is connected to the negative electrode of the diode D5 and the second end of the capacitor C4. After being connected, it serves as the third input end of the three-phase rectifier bridge module 4. The cathode of the diode D1 is connected to the cathode of the diode D2, the cathode of the diode D3, the first end of the capacitor C2, and the first coil input end of the common-mode inductor T1. The first coil output end of the common-mode inductor T1 is connected to the positive end of the polarity capacitor C3 and serves as the DC voltage positive output end of the three-phase rectifier bridge module 4. The anode of the diode D8 is connected to the anode of the diode D7, the anode of the diode D5, the second end of the capacitor C2, and the second coil input end of the common-mode inductor T1. The second coil output end of the common-mode inductor T1 is connected to the negative end of the polarity capacitor C3 and serves as the DC voltage negative output end of the three-phase rectifier bridge module 4.

[0029] As mentioned above, this case protects a fan light circuit that is convenient for externally connecting two control switches. All technical solutions that are the same or similar to this case should be shown to fall within the protection scope of this case.

Claims

1. A fan light circuit that is convenient for externally connecting two control switches, characterized in that The invention comprises a neutral line input terminal (1), a first live line input terminal (2) for being connected in series with a first control switch when in use, a second live line input terminal (3) for being connected in series with a second control switch when in use, a three-phase rectifier bridge module (4) for AC / DC conversion, a DC / DC module (5) for performing DC / DC conversion on the direct current output by the three-phase rectifier bridge module (4) so ​​as to provide required direct current to each module, a main control module (6), a controlled fan motor drive module (7) controlled by the main control module (6), and a controlled light source drive module (8) controlled by the main control module (6), wherein the first The live wire input terminal (2) is connected in series with the first input terminal of the three-phase rectifier bridge module (4), the neutral wire input terminal (1) is connected in series with the second input terminal of the three-phase rectifier bridge module (4), the second live wire input terminal (3) is connected in series with the third input terminal of the three-phase rectifier bridge module (4), and the main control module (6) is respectively connected with a first detection module (91) for detecting whether there is electricity between the first live wire input terminal (2) and the neutral wire input terminal (1), and a second detection module (92) for detecting whether there is electricity between the second live wire input terminal (3) and the neutral wire input terminal (1).

2. A fan light circuit that is convenient for externally connecting two control switches according to claim 1, characterized in that The first detection module (91) comprises a resistor R1, a diode D4, and an optocoupler U1; one end of the resistor R1 is connected in series with the first live wire input end (2), and the other end is connected with the positive electrode of the diode D4 and the negative electrode of the light-emitting diode of the optocoupler U1; the negative electrode of the diode D4 is connected with the positive electrode of the light-emitting diode of the optocoupler U1 and the neutral wire input end (1); the collector of the receiving tube of the optocoupler U1 is connected to a detection signal input end of the main control module (6) as the detection signal output end of the first detection module (91); and the emitter of the receiving tube of the optocoupler U1 is grounded with the ground end of the main control module (6).

3. A fan light circuit convenient for externally connecting two control switches according to claim 1, characterized in that The second detection module (92) comprises a resistor R4, a diode D6, and an optocoupler U2; one end of the resistor R4 is connected in series with the second live wire input terminal (3), and the other end is connected with the positive electrode of the diode D6 and the negative electrode of the light-emitting diode of the optocoupler U2; the negative electrode of the diode D6 is connected with the positive electrode of the light-emitting diode of the optocoupler U2 and the neutral wire input terminal (1); the collector of the receiving tube of the optocoupler U2 is connected to a detection signal input terminal of the main control module (6) as the detection signal output terminal of the second detection module (92); and the emitter of the receiving tube of the optocoupler U2 is grounded with the ground terminal of the main control module (6).

4. A fan light circuit convenient for externally connecting two control switches according to claim 1, characterized in that The controlled fan motor driving module (7) and the controlled light source driving module (8) respectively adopt controlled MOS tube switch circuits.

5. A fan light circuit convenient for externally connecting two control switches according to any one of claims 1 to 4, characterized in that The three-phase rectifier bridge module (4) comprises a three-phase rectifier bridge (41) connected to the neutral line input end (1), the first live line input end (2), and the second live line input end (3), and a common-mode inductor filtering unit (42) connected between the output end of the three-phase rectifier bridge (41) and the input end of the DC / DC module (5).

6. A fan light circuit for connecting two external control switches according to claim 5, characterized in that The three-phase rectifier bridge (41) comprises a capacitor C1, a capacitor C4, a diode D1, a diode D2, a diode D3, a diode D5, a diode D7, and a diode D8; the common-mode inductor filter unit (42) comprises a capacitor C2, a common-mode inductor T1, and a polarity capacitor C3; the positive electrode of the diode D1 is connected to the negative electrode of the diode D8, the first end of the capacitor C1, and the first end of the capacitor C4 to serve as the first input end of the three-phase rectifier bridge module (4); the positive electrode of the diode D2 is connected to the negative electrode of the diode D7 and the second end of the capacitor C1 to serve as the second input end of the three-phase rectifier bridge module (4); the positive electrode of the diode D3 is connected to the negative electrode of the diode D5 and the second end of the capacitor C4 to serve as the The third input end of the three-phase rectifier bridge module (4), the cathode of the diode D1 is connected to the cathode of the diode D2, the cathode of the diode D3, the first end of the capacitor C2, and the first coil input end of the common-mode inductor T1; the first coil output end of the common-mode inductor T1 is connected to the positive end of the polar capacitor C3 and serves as the DC voltage positive output end of the three-phase rectifier bridge module (4); the anode of the diode D8 is connected to the anode of the diode D7, the anode of the diode D5, the second end of the capacitor C2, and the second coil input end of the common-mode inductor T1; the second coil output end of the common-mode inductor T1 is connected to the negative end of the polar capacitor C3 and serves as the DC voltage negative output end of the three-phase rectifier bridge module (4).

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