A driving circuit of an ultraviolet germicidal lamp and a disinfection and sterilization device

Abstract

The present application discloses a driving circuit of an ultraviolet germicidal lamp and a disinfection and sterilization device, which are applied to the field of integrated circuit technology, and are used to enable the same disinfection and sterilization device to use a variety of ultraviolet germicidal lamps respectively to be suitable for different scenarios. The driving circuit of the ultraviolet germicidal lamp provided by the present application includes a power supply, a clamping control module, a transformer, a switch component, at least one ultraviolet germicidal lamp, a feedback module and a chip control module connected in sequence, and the chip control module is also connected to the transformer and the feedback module; the clamping control module is used to move the amplitude of the voltage flowing into the transformer to a range that the transformer can handle; the transformer is used to output a voltage of corresponding magnitude according to the control of the chip control module; the switch component is used to select the corresponding ultraviolet germicidal lamp; the selected ultraviolet germicidal lamp is used to emit ultraviolet rays of corresponding wavelengths; the chip control module is used for the chip control module to control the power of the transformer in real time.

Description

Technical Field

[0001] The present application relates to the field of integrated circuit technology, and in particular to a driving circuit of an ultraviolet germicidal lamp and a disinfection and sterilization device. Background Art

[0002] The most common ultraviolet rays are mainly derived from solar radiation. According to the wavelength, ultraviolet rays can be divided into long-wave ultraviolet UVA (ultraviolet A), medium-wave ultraviolet UVB (ultraviolet B) and short-wave ultraviolet UVC (ultraviolet C), with wavelengths of 320-400nm, 280-320nm and 100-280nm respectively. Ultraviolet disinfection and sterilization are widely used in hospitals, schools, nurseries, cinemas, buses, offices, homes, etc. It can purify the air, eliminate musty odors, disinfect water, and also produce a certain amount of negative oxygen ions to achieve the effect of refreshing the air. In public places, ultraviolet disinfection can prevent some germs from being spread through the air or on the surface of objects.

[0003] The prior art integrates ultraviolet sterilization lamps in some household appliances. For example, some vacuum cleaners on the market have integrated ultraviolet sterilization functions. However, the devices with ultraviolet sterilization functions in the prior art have a single sterilization function and are bulky and inconvenient for users to carry out. It is also inconvenient for users to perform ultraviolet sterilization and disinfection in public places such as public toilets and public seats. Summary of the invention

[0004] The embodiments of the present application provide a driving circuit of an ultraviolet germicidal lamp and a disinfection and sterilization device to solve the technical problem that the existing ultraviolet germicidal lamp has a single sterilization function and is inconvenient for users to carry outside.

[0005] According to one aspect of the present invention, a driving circuit of an ultraviolet germicidal lamp is provided, comprising a power supply and at least one ultraviolet germicidal lamp, and also comprising a clamping control module, a transformer, a switch component, a feedback module and a chip control module, wherein the power supply, the clamping control module, the transformer, the ultraviolet germicidal lamp, the switch component and the feedback module are connected in sequence, and the chip control module is connected to the transformer and the feedback module respectively;

[0006] The clamp control module is used to move the amplitude of the voltage flowing into the transformer to a range that the transformer can handle;

[0007] The transformer is used to output a voltage of corresponding magnitude according to the control of the chip control module;

[0008] The switch assembly is used to switch on the corresponding ultraviolet germicidal lamp;

[0009] The selected ultraviolet germicidal lamp is used to emit ultraviolet rays of corresponding wavelengths;

[0010] The chip control module is used to control the rated voltage of the ultraviolet germicidal lamp that is selected by the transformer output;

[0011] The feedback module is used to determine the ultraviolet germicidal lamp to be selected, collect the voltage flowing through the ultraviolet germicidal lamp, and send the collected voltage and the selected ultraviolet germicidal lamp to the chip control module in real time, so that the chip control module can control the power of the transformer in real time.

[0012] According to another aspect of the present invention, a disinfection and sterilization device is provided. The disinfection and sterilization device includes the driving circuit of the ultraviolet germicidal lamp mentioned above.

[0013] The present application provides a driving circuit for an ultraviolet germicidal lamp and a disinfection and sterilization device. The current flowing through the driving circuit is adjusted through a clamping control module, and the corresponding ultraviolet germicidal lamp is selected through a transformer according to the control of a chip control module, and the voltage flowing through the ultraviolet germicidal lamp is adjusted. The selected ultraviolet germicidal lamp emits ultraviolet rays of corresponding wavelengths according to the adjusted current and voltage. The power of the transformer is controlled through a chip control module, and the voltage flowing through the ultraviolet germicidal lamp is collected through a feedback module, and the collected voltage is sent to the chip control module in real time, so that the chip control module controls the power of the transformer in real time. The present application can automatically output a voltage value that is the same as the rated voltage of the selected ultraviolet germicidal lamp through the transformer, so that the same disinfection and sterilization device can use a variety of ultraviolet germicidal lamps respectively, and emit ultraviolet rays of corresponding wavelengths through the ultraviolet germicidal lamps to be suitable for different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 is a structural block diagram of a driving circuit of an ultraviolet germicidal lamp in an embodiment of the present application;

[0016] Figure 2 is a structural block diagram of a driving circuit of an ultraviolet germicidal lamp in another embodiment of the present application;

[0017] Figure 3 It is a structural schematic diagram of a driving circuit of an ultraviolet germicidal lamp in one embodiment of the present application;

[0018] Figure 4 It is a schematic diagram of a disinfection and sterilization device in one embodiment of the present application. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] The implementation of this application is described in detail below with reference to the specific drawings:

[0021] Figure 1 This is a structural block diagram of the driving circuit of the ultraviolet germicidal lamp in one embodiment of the present application. Figure 1 The driving circuit of the ultraviolet germicidal lamp according to an embodiment of the present application is described in detail, including a power supply 01 and at least one ultraviolet germicidal lamp, and also including a clamping control module 02, a transformer 03, a switch component, a feedback module 05 and a chip control module 06. The power supply 01, the clamping control module 02, the transformer 03, the ultraviolet germicidal lamp, the switch component and the feedback module 05 are connected in sequence, and the chip control module 06 is connected to the transformer 03 and the feedback module 05 respectively;

[0022] The clamp control module 02 is used to move the amplitude of the voltage flowing into the transformer 03 to a range that the transformer 03 can handle;

[0023] The transformer 03 is used to output a voltage of corresponding magnitude according to the control of the chip control module 06;

[0024] The switch assembly is used to select the corresponding ultraviolet germicidal lamp, such as Figure 3 As shown, the switch assembly includes but is not limited to Figure 3 The switches D2_1, D2_2 and D2_3 in FIG.

[0025] The selected ultraviolet germicidal lamp is used to emit ultraviolet rays of corresponding wavelengths;

[0026] The chip control module 06 is used to control the transformer 03 to output the rated voltage of the selected ultraviolet germicidal lamp;

[0027] The feedback module 05 is used to determine the ultraviolet germicidal lamp to be selected, collect the voltage flowing through the ultraviolet germicidal lamp, and send the collected voltage and the selected ultraviolet germicidal lamp to the chip control module 06 in real time, so that the chip control module 06 can control the power of the transformer 03 in real time.

[0028] According to a usage scenario of the present embodiment, for example, a user can select a corresponding ultraviolet germicidal lamp by turning on a switch in the conduction switch assembly according to actual needs, and the feedback module sends the selected ultraviolet germicidal lamp to the chip control module. The chip control module controls the transformer to output a voltage value that is the same as the rated voltage of the selected ultraviolet germicidal lamp. The feedback module also collects the voltage flowing through the ultraviolet germicidal lamp in real time, and sends the collected voltage and the selected ultraviolet germicidal lamp to the chip control module in real time, so that the chip control module can control the power of the transformer in real time, so that the voltage output by the transformer can be kept the same as the rated voltage of the selected ultraviolet germicidal lamp. At the same time, the inductor coil in the clamp control module can realize charging and energy storage. When the switch of the circuit driving circuit is closed and the circuit is turned on, the clamp control module provides electrical energy to the circuit on the one hand, and on the other hand, without changing the peak-to-peak value of the voltage and the voltage waveform, the voltage flowing through the transformer is moved up or down, and the amplitude of the voltage flowing into the transformer is moved to a range that the transformer can handle.

[0029] In this embodiment, the clamp control module is used to adjust the current flowing through the drive circuit, and the corresponding ultraviolet germicidal lamp is selected according to the control of the chip control module through the transformer, and the voltage flowing through the ultraviolet germicidal lamp is adjusted. The selected ultraviolet germicidal lamp emits ultraviolet rays of corresponding wavelengths according to the adjusted current and voltage. The power of the transformer is controlled by the chip control module, and the voltage flowing through the ultraviolet germicidal lamp is collected through the feedback module, and the collected voltage is sent to the chip control module in real time, so that the chip control module controls the power of the transformer in real time. The present application can automatically output a voltage value that is the same as the rated voltage of the selected ultraviolet germicidal lamp through the transformer, so that the same disinfection and sterilization equipment can use a variety of ultraviolet germicidal lamps respectively, and emit ultraviolet rays of corresponding wavelengths through the ultraviolet germicidal lamp to suit different sterilization scenarios.

[0030] In one embodiment, the clamp control module 02 is specifically used to shift the voltage waveform downward without changing the voltage waveform, and input the voltage after the waveform is shifted downward to the transformer 03.

[0031] Figure 3 is a schematic diagram of the structure of a driving circuit of an ultraviolet germicidal lamp in an embodiment of the present application. In one embodiment, as Figure 3As shown, the clamp control module 02 includes a first diode, a second diode, a third diode, a fourth diode, a capacitor C2, a resistor R3, a resistor R4, an inductor L2, an inductor L3 and a capacitor C3, the anode of the first diode is connected to the anode of the fourth diode, the cathode of the first diode is connected to the anode of the second diode, the cathode of the second diode is connected to the cathode of the third diode, the anode of the third diode is connected to the cathode of the fourth diode, the node between the first diode and the second diode is connected to the first connection end of the power supply 01, and the third diode The node between the resistor R3 and the inductor L2 is connected to the second connection end of the power supply 01, one end of the capacitor C2 is connected to the node between the second diode and the third diode, the other end of the capacitor C2 is connected to the node between the fourth diode and the first diode, the resistor R3 and the inductor L2 are connected in parallel between the positive connection end of the capacitor C2 and the positive connection end of the capacitor C3, the resistor R4 and the inductor L3 are connected in parallel between the negative connection end of the capacitor C2 and the negative connection end of the capacitor C3, and the positive connection end of the capacitor C3 is connected to the transformer 03.

[0032] In one embodiment, the clamp control module 02 further includes a resistor R5, a resistor R6, a capacitor C5, a diode D1 and a diode D3, one end of the resistor R6, one end of the capacitor C5 and the positive electrode of the diode D3 are connected in parallel to the positive electrode connection end of the capacitor C3, the other end of the resistor R6, the other end of the capacitor C5 and the negative electrode of the diode D3 are connected in parallel to one end of the resistor R5, the other end of the resistor R5 is connected to the negative electrode of the diode D1, and the positive electrode of the diode D1 is respectively connected to the transformer 03 and the chip control module 06.

[0033] In one embodiment, the chip control module 06 includes a chip of model LM5021, and the connection method of the chip LM5021 is as follows: Figure 3 shown.

[0034] Figure 2 is a structural block diagram of a driving circuit of an ultraviolet germicidal lamp in another embodiment of the present application. In one embodiment, Figure 2 As shown, the driving circuit of the ultraviolet germicidal lamp further includes a filter module 07, and the filter module 07 is respectively connected to the power supply 01 and the clamping control module 02;

[0035] The filter module 07 is used to reduce noise between the first connection end and the second connection end of the power supply 01.

[0036] In one embodiment, the filtering module 07 includes capacitor C6, capacitor C7, capacitor C8, capacitor C9, inductor L4 and inductor L5, the capacitor C7 is respectively connected to the first connection end and the second connection end of the power supply 01, one end of the inductor L4 is connected to the positive connection end of the capacitor C7, one end of the inductor L5 is connected to the negative connection end of the capacitor C7, the capacitor C6 is respectively connected to the inductor L4 and the inductor L5, the capacitor C8 is connected in series with the capacitor C9 and then connected in parallel with the capacitor C6 to form a first bus terminal and a second bus terminal, the first bus terminal is connected to the node between the first diode and the second diode, and the second bus terminal is connected to the node between the third diode and the second diode.

[0037] In one embodiment, if Figure 2 As shown, it also includes an overcurrent protection module 08, and the overcurrent protection module 08 is connected to the chip control module 06;

[0038] The overcurrent protection module 08 is used to control the current flowing into the chip control module 06 to not exceed the rated current of the chip control module 06 .

[0039] In this embodiment, the overcurrent protection module 08 may be Figure 3 The connection relationship between the capacitor C10 and other modules is as follows: Figure 3 As shown, one end of the capacitor C10 is grounded, and the other end of the capacitor C10 is connected to the chip control module and the clamp control module at the same time. When the current output by the clamp control module is too large, the capacitor C10 is broken down, causing the current to flow into the ground, thereby preventing the chip LM5021 in the chip control module from being damaged due to excessive current and voltage.

[0040] In one embodiment, the switch assembly includes a relay, such as Figure 3 As shown, the switch D2_1, switch D2_2 and switch D2_3 are all relay-type switches. The ultraviolet sterilization lamp includes a UVA lamp tube and / or a UVB lamp tube and / or a UVC lamp tube. Each ultraviolet sterilization lamp is equipped with the relay, which is respectively connected to the corresponding ultraviolet sterilization lamp and the transformer 03.

[0041] In this embodiment, due to the different wavelengths of different ultraviolet sterilization, the corresponding sterilization effects are also different. For example, the wavelength of UVA is between 320 and 400 nanometers, also known as long-wave dark spot effect ultraviolet light. It has strong penetrating power and can penetrate glass. It can be used to solidify printed documents, materials, pictures, etc. The wavelength of UVB is between 280 and 320 nanometers. Among them, the wavelength between 295 and 313 nanometers is the safest wavelength for the human body and can be used to treat skin diseases. The wavelength of UVC is between 200 and 275 nanometers, also known as short-wave sterilization ultraviolet light. It has the weakest penetrating power and cannot penetrate most transparent glass and plastics. It can be used for disinfection and sterilization, promote bone development, is beneficial to blood color, can treat certain skin diseases, and can also promote mineral metabolism and the formation of vitamin D in the body.

[0042] Users can selectively turn on the corresponding ultraviolet sterilization lamp according to actual needs to suit the corresponding scenario.

[0043] According to another embodiment of the present application, a disinfection and sterilization device is provided. Figure 4 Schematic diagram of a disinfection and sterilization device in one embodiment of the present application. Figure 4 As shown, the disinfection and sterilization equipment includes the driving circuit 100 of the ultraviolet germicidal lamp mentioned above.

[0044] The disinfection and sterilization equipment provided in this embodiment includes a driving circuit of the ultraviolet germicidal lamp, and adjusts the current flowing through the driving circuit through a clamping control module. The corresponding ultraviolet germicidal lamp is selected through a transformer according to the control of the chip control module, and the voltage flowing through the ultraviolet germicidal lamp is adjusted. The selected ultraviolet germicidal lamp emits ultraviolet rays of corresponding wavelengths according to the adjusted current and voltage. The power of the transformer is controlled by the chip control module, and the voltage flowing through the ultraviolet germicidal lamp is collected through a feedback module, and the collected voltage is sent to the chip control module in real time, so that the chip control module controls the power of the transformer in real time. The present application can automatically output a voltage value that is the same as the rated voltage of the selected ultraviolet germicidal lamp through the transformer, so that the same disinfection and sterilization equipment can use a variety of ultraviolet germicidal lamps respectively, and emit ultraviolet rays of corresponding wavelengths through the ultraviolet germicidal lamp to be suitable for different sterilization scenarios.

[0045] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0046] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A driving circuit for an ultraviolet germicidal lamp, comprising a power supply and at least one ultraviolet germicidal lamp, characterized in that: It also includes a clamp control module, a transformer, a switch component, a feedback module and a chip control module, wherein the power supply, the clamp control module, the transformer, the ultraviolet germicidal lamp, the switch component and the feedback module are connected in sequence, and the chip control module is respectively connected to the transformer and the feedback module; The clamp control module is used to move the amplitude of the voltage flowing into the transformer to a range that the transformer can handle. The clamp control module includes a first diode, a second diode, a third diode, a fourth diode, a diode D1, a diode D3, a capacitor C2, a capacitor C3, a capacitor C5, a resistor R3, a resistor R4, a resistor R5, a resistor R6, an inductor L2 and an inductor L3. The anode of the first diode is connected to the anode of the fourth diode, the cathode of the first diode is connected to the anode of the second diode, the cathode of the second diode is connected to the cathode of the third diode, the anode of the third diode is connected to the cathode of the fourth diode, the node between the first diode and the second diode is connected to the first connection end of the power supply, the node between the third diode and the fourth diode is connected to the second connection end of the power supply, and one end of the capacitor C2 is connected to the second second The node between the diode and the third diode, the other end of the capacitor C2 is connected to the node between the fourth diode and the first diode, the resistor R3 and the inductor L2 are connected in parallel between the positive connection end of the capacitor C2 and the positive connection end of the capacitor C3, the resistor R4 and the inductor L3 are connected in parallel between the negative connection end of the capacitor C2 and the negative connection end of the capacitor C3, the positive connection end of the capacitor C3 is connected to the transformer, one end of the resistor R6, one end of the capacitor C5 and the positive electrode of the diode D3 are connected in parallel and connected to the positive connection end of the capacitor C3, the other end of the resistor R6, the other end of the capacitor C5 and the negative electrode of the diode D3 are connected in parallel and connected to one end of the resistor R5, the other end of the resistor R5 is connected to the negative electrode of the diode D1, and the positive electrode of the diode D1 is connected to the transformer and the chip control module respectively; The transformer is used to output a voltage of corresponding magnitude according to the control of the chip control module; The switch assembly is used to switch on the corresponding ultraviolet germicidal lamp; The selected ultraviolet germicidal lamp is used to emit ultraviolet rays of corresponding wavelengths; The chip control module is used to control the rated voltage of the ultraviolet germicidal lamp that is selected by the transformer output; The feedback module is used to determine the ultraviolet germicidal lamp to be selected, collect the voltage flowing through the ultraviolet germicidal lamp, and send the collected voltage and the selected ultraviolet germicidal lamp to the chip control module in real time, so that the chip control module can control the power of the transformer in real time.

2. The driving circuit of the ultraviolet germicidal lamp according to claim 1, characterized in that: The clamp control module is specifically used to shift the voltage waveform downward without changing the voltage waveform, and input the voltage after the waveform is shifted downward into the transformer.

3. The driving circuit of the ultraviolet germicidal lamp according to claim 2, characterized in that: The chip control module includes a chip of model LM5021.

4. The driving circuit of the ultraviolet germicidal lamp according to claim 2, characterized in that: It also includes a filter module, which is connected to the power supply and the clamp control module respectively; The filter module is used to reduce noise between the first connection end and the second connection end of the power supply.

5. The driving circuit of the ultraviolet germicidal lamp according to claim 4, characterized in that: The filtering module includes capacitor C6, capacitor C7, capacitor C8, capacitor C9, inductor L4 and inductor L5, the capacitor C7 is respectively connected to the first connection end and the second connection end of the power supply, one end of the inductor L4 is connected to the positive connection end of the capacitor C7, one end of the inductor L5 is connected to the negative connection end of the capacitor C7, the capacitor C6 is respectively connected to the inductor L4 and the inductor L5, the capacitor C8 is connected in series with the capacitor C9 and then connected in parallel with the capacitor C6 to form a first bus terminal and a second bus terminal, the first bus terminal is connected to the node between the first diode and the second diode, and the second bus terminal is connected to the node between the third diode and the second diode.

6. The driving circuit of the ultraviolet germicidal lamp according to claim 1, characterized in that: It also includes an overcurrent protection module, which is connected to the chip control module; The overcurrent protection module is used to control the current flowing into the chip control module to not exceed the rated current of the chip control module.

7. The driving circuit of the ultraviolet germicidal lamp according to any one of claims 1 to 6, characterized in that: The switch assembly includes a relay, the ultraviolet germicidal lamp includes a UVA lamp tube and / or a UVB lamp tube and / or a UVC lamp tube, each of the ultraviolet germicidal lamps is equipped with the relay, and the relay is respectively connected to the corresponding ultraviolet germicidal lamp and the transformer.

8. A disinfection and sterilization device, characterized in that: The disinfection and sterilization equipment comprises a driving circuit of the ultraviolet germicidal lamp according to any one of claims 1 to 7.

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