Underwater ultraviolet lamp
By using a combination of metal support structure and plastic protective cover in the underwater UV lamp, the reliability problem caused by electrochemical corrosion of the underwater UV lamp is solved, and effective prevention of biofouling and equipment protection are achieved in deep water environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HANGZHOU BLUE ASPIRATIONS TECH PARTNERSHIP (LLP) HANGZHOU
- Filing Date
- 2026-05-12
- Publication Date
- 2026-06-12
AI Technical Summary
Existing underwater ultraviolet lamps have poor reliability in marine environments due to electrochemical reactions between the metal casing and the clamp, and cannot effectively prevent marine organisms from attaching to and corroding the equipment.
The design uses metal as the supporting structure material and plastic as the protective cover material. The protective cover protects the supporting structure and avoids direct contact with the clamps. Combined with the buffer pad and sealing structure, it prevents electrochemical corrosion. The design of aluminum alloy supporting structure and light-transmitting cover ensures heat dissipation and pressure resistance.
This improves the reliability and pressure resistance of underwater UV lamps, prevents corrosion of the supporting structure, ensures effective killing of marine life in deep-sea environments, and extends equipment lifespan.
Smart Images
Figure CN122191499A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of biofouling prevention, and more particularly to an underwater ultraviolet lamp. Background Technology
[0002] Electrical equipment that operates in marine environments for extended periods can accumulate various marine organisms, such as microorganisms, algae, and other flora and fauna. This accumulation can affect the quality of communication data and, in more serious cases, directly corrode the equipment, causing damage. To address this, ultraviolet (UV) lamps can be used to kill these marine organisms. This method produces less pollution and effectively prevents their growth and spread.
[0003] In related technologies, when ultraviolet lamps are used in underwater environments, the surface of the metal casing of the ultraviolet lamp will undergo an electrochemical reaction with the outer metal clamp, resulting in electrochemical corrosion and poor reliability of the ultraviolet lamp. Summary of the Invention
[0004] This application provides a highly reliable underwater ultraviolet lamp.
[0005] This application provides an underwater ultraviolet lamp, including: Control circuit board; The support structure includes a support body surrounding the outside of the control circuit board and an ultraviolet lamp holder connected to the end of the support body; At least one ultraviolet lamp panel, wherein the at least one ultraviolet lamp panel is disposed on the side wall of the ultraviolet lamp holder; A light-transmitting cover, wherein the light-transmitting cover is disposed on the outside of the ultraviolet lamp holder; and A protective cover is fitted over the outside of the support structure and the light-transmitting cover, and presses the light-transmitting cover tightly onto the support body; the protective cover is used for clamping by a fixture; wherein, the support structure is made of metal, and the protective cover is made of plastic.
[0006] Furthermore, the underwater ultraviolet lamp also includes a first buffer pad and a second buffer pad; the first buffer pad and the second buffer pad are respectively disposed at opposite ends of the light-transmitting cover in the axial direction of the underwater ultraviolet lamp; The protective cover is connected to the support structure and applies a pressing force toward the support structure to the light-transmitting cover through the first buffer pad; the second buffer pad is disposed between the light-transmitting cover and the support structure.
[0007] Furthermore, the protective cover has a positioning protrusion protruding from the center of the inner wall of the underwater ultraviolet lamp in the axial direction, and the first buffer pad is embedded in the positioning protrusion; and / or The outer surface of the support body is provided with a first positioning groove extending circumferentially therein; the inner sidewall of the light-transmitting cover is sealed against the surface of the first positioning groove in the radial direction of the underwater ultraviolet lamp; a second buffer pad is disposed between the surfaces of the light-transmitting cover and the first positioning groove in the axial direction of the underwater ultraviolet lamp; and / or The first and second buffer pads are made of rubber.
[0008] Furthermore, the underwater ultraviolet lamp also includes a fixed tailstock and a first sealing structure, and the control circuit board is connected to the fixed tailstock; The outer surface of the fixed tailstock is provided with a second positioning groove extending circumferentially therefrom. The support body is sleeved on the outer side of the fixed tailstock. The inner sidewall of the support body is sealed against the surface of the second positioning groove in the radial direction of the underwater ultraviolet lamp. The first sealing structure is disposed between the protective cover and the surface of the second positioning groove in the axial direction of the underwater ultraviolet lamp; and / or The underwater ultraviolet lamp also includes a second sealing structure, and the protective cover includes a first cover and a second cover; the first cover is sleeved on the outside of the support body, the second cover is disposed on the outside of the ultraviolet lamp holder, and the second sealing structure is disposed between the first cover and the second cover.
[0009] Furthermore, the control circuit board includes a DC power input terminal, a ground terminal, a lamp board control circuit, and a controller; The lamp panel control circuit includes a dimming switch, and the ultraviolet lamp panel and the dimming switch are connected in series between the DC power input terminal and the ground terminal; the controller includes a pulse output port, which is connected to the dimming switch; the pulse output port is used to output a pulse signal to control the dimming switch to turn on or off, so as to control the brightness and / or working mode of the ultraviolet lamp panel.
[0010] Furthermore, the ultraviolet lamp board includes a first ultraviolet lamp bead and a second ultraviolet lamp bead connected in parallel; the control circuit board includes a lamp bead switching circuit; one end of the first ultraviolet lamp bead and the second ultraviolet lamp bead are connected to the DC power input terminal through the lamp bead switching circuit; the other end of the first ultraviolet lamp bead and the second ultraviolet lamp bead are connected to the ground terminal through the dimming switch; The controller also includes a switching signal output port, which is connected to the lamp switching circuit and is used to connect the first ultraviolet lamp or the second ultraviolet lamp to the DC power input terminal.
[0011] Furthermore, the lamp switching circuit includes a first switching switch, a second switching switch, and a reverse circuit; the first switching switch is connected in series between the DC power input terminal and the first ultraviolet lamp; the second switching switch is connected in series between the DC power input terminal and the second ultraviolet lamp; the switching signal output port is connected to the control terminal of the first switching switch and is connected to the control terminal of the second switching switch through the reverse circuit.
[0012] Furthermore, the lamp control circuit also includes a sampling resistor, and the controller also includes a switching signal output port and a first voltage detection port. The first voltage detection port is connected between the dimming switch and one end of the sampling resistor, and the other end of the sampling resistor is connected to the ground terminal. When the voltage detected by the first voltage detection port of the controller is lower than the first preset voltage value, the controller controls the switching signal output port to output a switching signal.
[0013] Furthermore, the control circuit board also includes an irradiance detection circuit; the irradiance detection circuit includes an ultraviolet light sensor and a feedback resistor, and the controller also includes a switching signal output port and a second voltage detection port; the feedback resistor and the ultraviolet light sensor are connected in series between the DC power input terminal and the ground terminal; the second voltage detection port is connected between the feedback resistor and the ultraviolet light sensor; When the voltage detected by the second voltage detection port of the controller is lower than the second preset voltage value, the controller controls the switching signal output port to output a switching signal.
[0014] The underwater ultraviolet lamp provided in this application includes a support structure, at least one ultraviolet lamp plate, and a protective cover. The at least one ultraviolet lamp plate is disposed on the side wall of the support structure. The support structure is made of metal, which gives the underwater ultraviolet lamp good pressure resistance and allows it to adapt to deeper underwater environments. The protective cover is fitted over the outside of the support structure for clamping. The protective cover is made of plastic, thus protecting the support structure and preventing direct contact between the metal support structure and the clamp, thereby preventing electrochemical corrosion of the support structure. This design ensures that the underwater ultraviolet lamp can adapt to deeper underwater environments while effectively preventing electrochemical corrosion of the support structure, resulting in higher reliability.
[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0017] Figure 1 The image shown is a three-dimensional schematic diagram of an underwater ultraviolet lamp according to an embodiment of this application; Figure 2 As shown Figure 1 An exploded 3D view of the underwater ultraviolet lamp shown. Figure 3 As shown Figure 1 A cross-sectional view of the underwater ultraviolet lamp shown; Figure 4 As shown Figure 1 The diagram shown is a three-dimensional representation of an underwater ultraviolet lamp after the protective cover and light-transmitting cover have been removed. Figure 5 The diagram shown is a circuit block diagram of the control circuit board of an underwater ultraviolet lamp according to an embodiment of this application; Figure 6 As shown Figure 5 The circuit block diagram of the control circuit board shown is as follows; Figure 7 As shown Figure 5 The circuit diagram shown is for the LED switching circuit of the control circuit board. Figure 8 As shown Figure 5 The circuit diagram shown is for the lamp control circuit of the control circuit board. Detailed Implementation
[0018] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0019] To better understand the technical solution of this application, the underwater ultraviolet lamp of this application will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementation methods can be combined with each other.
[0020] See Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this application provides an underwater ultraviolet lamp 10, which can be installed in an underwater environment to irradiate equipment to be treated, thereby preventing marine organisms from attaching to and growing on the surface of the equipment. The underwater ultraviolet lamp 10 includes a control circuit board 17, a support structure 11, at least one ultraviolet lamp plate 12, a light-transmitting cover 20, and a protective cover 13.
[0021] The support structure 11 includes a support body 18 surrounding the outside of the control circuit board 17 and a UV lamp holder 19 connected to the end of the support body 18. The UV lamp holder 19 can be integrally formed with the support body 18, or it can be detachably connected to the end of the support body 18. The material of the UV lamp holder 19 and the support body 18 can be the same, resulting in low interfacial thermal resistance and the formation of a continuous and smooth heat conduction path, thereby achieving stable heat dissipation.
[0022] At least one ultraviolet lamp plate 12 is disposed on the side wall of the ultraviolet lamp holder 19. The ultraviolet lamp plate 12 can emit ultraviolet rays with a wavelength of 260nm~280nm. In this embodiment, at least two ultraviolet lamp plates 12 are disposed on the side wall of the ultraviolet lamp holder 19 and are evenly arranged along the circumference of the ultraviolet lamp holder 19. The materials of the ultraviolet lamp holder 19 and the support body 18 can both be aluminum alloy, which can help to achieve lightweighting of the underwater ultraviolet lamp 10 while ensuring heat dissipation. Since at least one ultraviolet lamp plate 12 is disposed on the side wall of the ultraviolet lamp holder 19, heat can be conducted through the ultraviolet lamp holder 19 and the support body 18, which can achieve effective heat dissipation of the ultraviolet lamp plate 12. The ultraviolet lamp plate 12 may include at least one ultraviolet lamp bead 14. In this embodiment, the ultraviolet lamp plate 12 includes two ultraviolet lamp beads 14, and the two ultraviolet lamp beads 14 include a first ultraviolet lamp bead 15 and a second ultraviolet lamp bead 16, which are arranged at intervals.
[0023] A light-transmitting cover 20 is positioned on the outside of the ultraviolet lamp holder 19. The light-transmitting cover 20 serves to protect the ultraviolet lamp panel 12. The material of the light-transmitting cover 20 can be glass, and the light transmittance of the light-transmitting cover 20 is not less than 92%.
[0024] A protective cover 13 is fitted over the outside of the support structure 11 and the light-transmitting cover 20, pressing the light-transmitting cover 20 firmly onto the support body 18. The protective cover 13 is used for clamping. The clamp can be a gripping structure. The protective cover 13 can be nested into the outside of the support body 18 via an interference fit. The underwater UV lamp 10 can be fixed to an external device, which can be the device to be processed, using metal clamps. The support structure 11 is made of metal, and the protective cover 13 is made of plastic. The metal material of the support structure 11 provides good pressure resistance, ensuring that the underwater UV lamp 10 can adapt to deeper underwater environments. In one embodiment, the surface of the support structure 11 undergoes hard anodizing treatment, further improving the material's corrosion resistance and thus better adapting to underwater environments.
[0025] In one embodiment, the support structure 11 can be made of a thermally conductive metal, allowing the heat generated by at least one UV lamp panel 12 to be conducted through the support structure 11, thus facilitating heat dissipation of the UV lamp panel 12. In this embodiment, the support structure 11 is made of aluminum alloy, which has high strength, low cost, light weight, good processing performance, and high thermal conductivity, meeting the heat dissipation requirements of multiple UV lamp panels 12, thereby facilitating heat dissipation of the UV lamp panels 12.
[0026] The underwater ultraviolet lamp 10 provided in this application includes a support structure 11, at least one ultraviolet lamp plate 12, and a protective cover 13. The at least one ultraviolet lamp plate 12 is disposed on the side wall of the support structure 11. The support structure 11 is made of metal, which gives the underwater ultraviolet lamp 10 good pressure resistance and allows it to adapt to deeper underwater environments. The protective cover 13 is fitted over the outside of the support structure 11 for clamping. The protective cover 13 is made of plastic, thus protecting the support structure 11 and preventing direct contact between the metal support structure 11 and the clamp, thereby preventing electrochemical corrosion of the support structure 11. This design ensures that the underwater ultraviolet lamp 10 can adapt to deeper underwater environments while effectively preventing electrochemical corrosion of the support structure 11, resulting in higher reliability.
[0027] In one embodiment, the thickness of the support body 18 can be 3mm to 4mm, thus ensuring good heat dissipation while ensuring pressure resistance in deep water areas.
[0028] In one embodiment, the protective cover 13 includes a first cover 23 and a second cover 24. The first cover 23 is fitted onto the outside of the support body 18 via an interference fit. The second cover 24 is located on the outside of the UV lamp holder 19 and is detachably connected to the support body 18 via screws. Both the first and second covers are made of plastic, giving them both strength and toughness, effectively resisting and absorbing external impacts. Furthermore, the first and second covers do not undergo electrochemical reactions with any metal, eliminating the need to consider the compatibility of the clamp material with the first cover 23, thus providing strong versatility and saving costs.
[0029] In one embodiment, the thickness of the first outer cover 23 can be 2mm to 3mm, which ensures effective heat dissipation while being stronger and adaptable to deeper underwater environments.
[0030] In one embodiment, the underwater UV lamp 10 further includes a first buffer pad 21 and a second buffer pad 22. The first buffer pad 21 and the second buffer pad 22 are respectively disposed at opposite ends of the light-transmitting cover 20 in the axial direction of the underwater UV lamp 10. In this embodiment, the first buffer pad 21 and the second buffer pad 22 are made of rubber, thus providing good cushioning effect. The protective outer cover 13 is connected to the support structure 11 and applies a pressing force towards the support structure 11 to the light-transmitting cover 20 through the first buffer pad 21. The second outer cover 24 is detachably connected to the support structure 11 and applies a pressing force towards the support body 18 of the support structure 11 to the light-transmitting cover 20 through the first buffer pad 21. The second outer cover 24 is disposed on the outside of the light-transmitting cover 20. The second buffer pad 22 is disposed between the light-transmitting cover 20 and the support structure 11. Since the light-transmitting cover 20 is made of brittle material, the first buffer pad 21 and the second buffer pad 22 act as buffers to avoid rigid contact and effectively achieve cushioning under strong vibration and impact, thereby effectively preventing damage to the light-transmitting cover 20.
[0031] In one embodiment, the protective cover 13 has a positioning protrusion 25 protruding from the middle of the inner wall in the axial direction of the underwater ultraviolet lamp 10. The first buffer pad 21 is embedded in the positioning protrusion 25 and can be bonded to the positioning protrusion 25, thus increasing the bonding area and making it more secure. At the same time, the positioning protrusion 25 can press the light-transmitting cover 20 to prevent it from detaching.
[0032] In one embodiment, the outer surface of the support body 18 is provided with a first positioning groove 26 extending circumferentially therein. The inner wall of the light-transmitting cover 20 is sealed against the surface of the first positioning groove 26 in the radial direction of the underwater ultraviolet lamp 10. A second buffer pad 22 is disposed between the surfaces of the light-transmitting cover 20 and the first positioning groove 26 in the axial direction of the underwater ultraviolet lamp 10. Thus, the first positioning groove 26 can accommodate the light-transmitting cover 20 and the second buffer pad 22, and the first positioning groove 26 can play a positioning role. The second buffer pad 22 can be bonded to the surface of the first positioning groove 26 in the axial direction of the underwater ultraviolet lamp 10 by adhesive.
[0033] In one embodiment, the underwater UV lamp 10 further includes a fixed tailstock 27 and a first sealing structure 28, wherein the first sealing structure 28 can be a sealing ring. The fixed tailstock 27 can be made of plastic. A control circuit board 17 is connected to the fixed tailstock 27. One end of the control circuit board 17 is connected to the fixed tailstock 27, and the other end extends into the surrounding area of the support body 18. In one embodiment, the underwater UV lamp 10 further includes an adapter 50, through which the control circuit board 17 is connected to the fixed tailstock 27.
[0034] The outer surface of the fixed tailstock 27 is provided with a second positioning groove 29 extending circumferentially therein. The support body 18 is sleeved on the outer side of the fixed tailstock 27, wherein the inner sidewall of the support body 18 is sealed against the surface of the second positioning groove 29 in the radial direction of the underwater ultraviolet lamp 10. A first sealing structure 28 is disposed between the surfaces of the protective cover 13 and the second positioning groove 29 in the axial direction of the underwater ultraviolet lamp 10, and the first sealing structure 28 forms a seal between the protective cover 13 and the second positioning groove 29. In this way, the sealing performance is better, so that the protective cover 13 can better protect the support structure 11, and the protective cover 13 can more effectively prevent water from contacting the support structure 11, thereby improving the corrosion resistance and service life of the support structure 11.
[0035] In one embodiment, the support body 18 is detachably fixed to the fixed tailstock 27 by screws. The inner side of the first outer cover 23 is recessed to form a receiving groove 30, and the head of the screw is received in the receiving groove 30. This prevents relative rotation between the support body 18 and the first outer cover 23, thereby ensuring better sealing performance of the first sealing structure 28. The screw can be a granulator screw.
[0036] In one embodiment, the underwater UV lamp 10 further includes a second sealing structure 31 disposed between the first outer cover 23 and the second outer cover 24, forming a seal between the two outer covers. This provides better sealing performance and more effectively prevents water from contacting the support structure 11.
[0037] At least one UV lamp plate 12 of the underwater UV lamp 10 of this application is disposed on the side wall of the support structure 11. The support structure 11 is made of thermally conductive metal, which ensures the pressure resistance of the underwater UV lamp 10 while effectively conducting the heat generated by at least one UV lamp plate 12, thus guaranteeing the heat dissipation performance of the underwater UV lamp 10 and making it suitable for deeper underwater environments. A protective cover 13 is fitted onto the outside of the support structure 11. The protective cover 13 is made of plastic, which protects the support structure 11 and prevents the metal support structure 11 from directly contacting the clamp, thereby preventing electrochemical corrosion of the support structure 11. At the same time, the protective cover 13 can form a seal through the first sealing structure 28 and the second sealing structure 31 to prevent the support structure 11 from contacting water, further improving corrosion resistance. Thus, the underwater UV lamp 10 has higher reliability and better durability, and improves the operational stability and safety in high-vibration, highly corrosive, and high-pressure seawater environments.
[0038] In one embodiment, the outer side of the fixed tailstock 27 is provided with a plurality of continuously arranged anti-slip grooves 32. The anti-slip grooves 32 are designed to facilitate the user's grip, so that the underwater ultraviolet lamp 10 can be disassembled by hand without the use of additional tools, thereby preventing damage to the surface of the underwater ultraviolet lamp 10 during the disassembly of the underwater ultraviolet lamp 10 by tools.
[0039] See Figure 5 and Figure 6 As shown, the control circuit board 17 includes a DC power input terminal 33, a ground terminal 34, a lamp board control circuit 47, and a controller 36. The lamp board control circuit 47 includes a dimming switch 35. Figure 8 In the illustrated embodiment, the dimming switch 35 can be a MOSFET Q5. The UV lamp panel 12 and the dimming switch 35 are connected in series between the DC power input terminal 33 and the ground terminal 34. The controller 36 includes a pulse output port 37, which is connected to the dimming switch 35. The pulse output port 37 is used to output pulse signals to control the switching on or off of the dimming switch 35, thereby controlling the brightness and / or operating mode of the UV lamp panel 12. Specifically, the pulse output port 37 is used to output pulse signals with different duty cycles to control the UV lamp panel 12 to output different brightness levels. The operating modes of the UV lamp panel 12 include a constantly lit mode, a normally closed mode, and a cyclic switching mode.
[0040] In this embodiment, when the pulse signal output from the pulse output port 37 is low, the dimming switch 35 is turned off to turn off the ultraviolet lamp beads 14 of the ultraviolet lamp board 12. When the pulse signal output from the pulse output port 37 is high, the dimming switch 35 is turned on to turn on the ultraviolet lamp beads 14 of the ultraviolet lamp board 12. Different duty cycles of the pulse signal result in different proportions of high and low levels throughout the cycle, thus adjusting the brightness of the ultraviolet lamp board 12 by adjusting the duty cycle. The pulse signal can be a PWM signal with a frequency of 100Hz. The duty cycle is configured by the host computer via the RS485 communication interface. When the duty cycle of the pulse signal is 0%, it indicates that the ultraviolet lamp beads 14 of the ultraviolet lamp board 12 are off. When the duty cycle of the pulse signal is not 0%, it indicates that the ultraviolet lamp beads 14 of the ultraviolet lamp board 12 are on. The larger the duty cycle, the greater the current flowing through the ultraviolet lamp beads 14, and the brighter the ultraviolet lamp beads 14.
[0041] The brightness and / or operating mode of the ultraviolet lamp panel 12 can be controlled by the pulse signal output from the pulse output port 37. For example, when marine organisms are growing rapidly, the ultraviolet lamp panel 12 can be kept in a constant-on mode to continuously kill marine organisms. Alternatively, when the brightness of the ultraviolet lamp panel 12 is low, the brightness can be increased to better kill marine organisms. This setting can better prevent marine organisms from adhering to and growing on the surface of the equipment to be treated.
[0042] See Figure 6 As shown, in one embodiment, the UV lamp board 12 includes a first UV lamp 15 and a second UV lamp 16 connected in parallel. The control circuit board 17 includes a lamp switching circuit 38. One end of the first UV lamp 15 and the second UV lamp 16 is connected to the DC power input terminal 33 through the lamp switching circuit 38. The other end of the first UV lamp 15 and the second UV lamp 16 is connected to the ground terminal 34 through a dimming switch 35.
[0043] The controller 36 also includes a switching signal output port 39, which is connected to the lamp switching circuit 38 and used to connect the first ultraviolet lamp 15 or the second ultraviolet lamp 16 to the DC power input terminal 33. Thus, the ultraviolet lamp 14 can be switched via the switching signal output from the switching signal output port 39, allowing switching from the first ultraviolet lamp 15 to the second ultraviolet lamp 16, or vice versa. Furthermore, it can switch to another ultraviolet lamp 14 if one ultraviolet lamp 14 fails, making the switching method simple. Simultaneously, after switching to the corresponding ultraviolet lamp 14, the brightness of that ultraviolet lamp 14 can be adjusted, effectively preventing the adhesion and growth of marine organisms on the surface of the device being treated.
[0044] In one embodiment, the LED switching circuit 38 includes a first switching switch 40, a second switching switch 41, and an inverting circuit 42. The first switching switch 40 is connected in series between the DC power input terminal 33 and the first UV LED 15. The second switching switch 41 is connected in series between the DC power input terminal 33 and the second UV LED 16. The switching signal output port 39 is connected to the control terminal of the first switching switch 40 and to the control terminal of the second switching switch 41 via the inverting circuit 42. Thus, the inverting circuit 42 can achieve a mutual exclusion relationship between the first UV LED 15 and the second UV LED 16, thereby improving safety.
[0045] See Figure 7 As shown, in one embodiment, the LED switching circuit 38 further includes a switching sub-circuit 43, which includes a transistor Q1 connected between the DC power input terminal VCC and the ground terminal GND. The control terminal of transistor Q1 is connected to the switching signal output port 39. The inverting circuit 42 includes a MOSFET Q2, one end of which is connected to the DC power input terminal VCC and the second UV LED 16, and the other end is connected to the ground terminal GND. The control terminal of MOSFET Q2 is connected between the DC power input terminal VCC and the transistor Q1. This simplifies the implementation.
[0046] In this embodiment, the first switching switch 40 is a MOSFET Q3, and the second switching switch 41 is a MOSFET Q4. MOSFET Q3 is connected in series between the DC power input terminal VCC and the first UV lamp 15, and the control terminal of MOSFET Q3 is connected between the DC power input terminal VCC and the transistor Q1. MOSFET Q4 is connected in series between the DC power input terminal VCC and the second UV lamp 16, and the control terminal of MOSFET Q4 is connected between the DC power input terminal VCC and one end of MOSFET Q2.
[0047] Thus, when the switching signal output port 39 outputs a high level, transistor Q1 is turned on, causing the control terminal of MOSFET Q3 to be at a low level. MOSFET Q3 is turned on, and the DC power supply supplies power to the first UV lamp 15 to light it up. At the same time, the control terminal of MOSFET Q2 is at a low level, so MOSFET Q2 is turned off. Consequently, the control terminal of MOSFET Q4 is at a high level, so MOSFET Q4 is turned off, and the DC power supply does not supply power to the second UV lamp 16.
[0048] When the switching signal output port 39 outputs a low level, transistor Q1 is turned off, causing the control terminal of MOSFET Q3 to be at a high level. MOSFET Q3 is turned off, and the DC power supply does not supply power to the first UV lamp 15. At the same time, the control terminal of MOSFET Q2 is at a high level, and MOSFET Q2 is turned on. This causes the control terminal of MOSFET Q4 to be at a low level, and MOSFET Q4 is turned on. The DC power supply then supplies power to the second UV lamp 16 to illuminate the second UV lamp 16.
[0049] In one embodiment, the switching sub-circuit 43 further includes a pull-up resistor R1 connected in series with transistor Q1. The lamp switching circuit 38 further includes a first pull-down resistor R2 connected between the DC power input terminal VCC and MOSFET Q2, a first damping resistor R3 connected to the control terminal of MOSFET Q3, and a second damping resistor R4 connected to the control terminal of MOSFET Q4.
[0050] See Figure 6 and Figure 8 As shown, in one embodiment, the lamp control circuit 47 further includes a sampling resistor R7, and the controller 36 further includes a first voltage detection port 46, which is connected between the dimming switch 35 and one end of the sampling resistor R7, and the other end of the sampling resistor R7 is connected to the ground terminal GND.
[0051] When the voltage detected by the first voltage detection port 46 of the controller 36 is lower than the first preset voltage value, the control switching signal output port 39 outputs a switching signal.
[0052] Thus, the current flowing through the UV lamp 14 can flow through the sampling resistor R7, generating a corresponding voltage across the sampling resistor R7. When the voltage detected by the first voltage detection port 46 of the controller 36 is lower than the first preset voltage value, it indicates that the UV lamp 14 is malfunctioning. The controller 36 can output a switching signal through the switching signal output port 39 to switch the UV lamp 14, thereby achieving timely switching of the UV lamp 14.
[0053] In one embodiment, the lamp control circuit 47 further includes a second pull-down resistor R8 connected between the pulse output port 37 and the ground terminal GND.
[0054] In one embodiment, the lamp control circuit 47 further includes a sample-and-hold resistor R9, which is connected between one end of the sampling resistor R7 and the first voltage detection port 46.
[0055] In one embodiment, the lamp board control circuit 47 further includes a sample holding capacitor C2, which is connected in parallel to the sampling resistor R7, and its two ends are respectively connected to the first voltage detection port 46 and the ground terminal GND.
[0056] See you again Figure 6 As shown, in one embodiment, the control circuit board 17 further includes an irradiance detection circuit 44. The irradiance detection circuit 44 includes an ultraviolet light sensor 48 and a feedback resistor 49, and the controller 36 further includes a second voltage detection port 45. The ultraviolet light sensor 48 is a current-output C-band sensor. When the ultraviolet light sensor 48 receives C-band ultraviolet light, a current flows through it, and this current is converted into a voltage signal by the feedback resistor 49. The feedback resistor 49 and the ultraviolet light sensor 48 are connected in series between the DC power input terminal and the ground terminal. The second voltage detection port 45 is connected between the feedback resistor 49 and the ultraviolet light sensor 48.
[0057] When the voltage detected by the second voltage detection port 45 of the controller 36 is lower than the second preset voltage value, the control switching signal output port 39 outputs a switching signal.
[0058] In this way, the current irradiance of the ultraviolet lamp bead 14 can be determined by the irradiance intensity detection circuit 44. When the current irradiance of the ultraviolet lamp bead 14 is weak, the voltage detected by the second voltage detection port 45 is lower than the second preset voltage value. The controller 36 can output a switching signal through the control switching signal output port 39 to switch the ultraviolet lamp bead 14, thereby effectively preventing the growth of surface deposits on the equipment to be treated due to the weak irradiance of the ultraviolet lamp bead 14.
[0059] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.
Claims
1. An underwater ultraviolet lamp, characterized in that, include: Control circuit board; The support structure includes a support body surrounding the outside of the control circuit board and an ultraviolet lamp holder connected to the end of the support body; At least one ultraviolet lamp panel, wherein the at least one ultraviolet lamp panel is disposed on the side wall of the ultraviolet lamp holder; A light-transmitting cover, wherein the light-transmitting cover is disposed on the outside of the ultraviolet lamp holder; and A protective cover is fitted over the outside of the support structure and the light-transmitting cover, and presses the light-transmitting cover tightly onto the support body; the protective cover is used for clamping by a fixture; wherein, the support structure is made of metal, and the protective cover is made of plastic.
2. The underwater ultraviolet lamp according to claim 1, characterized in that, The underwater ultraviolet lamp also includes a first buffer pad and a second buffer pad; the first buffer pad and the second buffer pad are respectively disposed at opposite ends of the light-transmitting cover in the axial direction of the underwater ultraviolet lamp; The protective cover is connected to the support structure and applies a pressing force toward the support structure to the light-transmitting cover through the first buffer pad; the second buffer pad is disposed between the light-transmitting cover and the support structure.
3. The underwater ultraviolet lamp according to claim 2, characterized in that, The protective cover has a positioning protrusion protruding from the middle of the inner wall of the underwater ultraviolet lamp in the axial direction, and the first buffer pad is embedded in the positioning protrusion; and / or The outer surface of the support body is provided with a first positioning groove extending circumferentially therein; the inner sidewall of the light-transmitting cover is sealed against the surface of the first positioning groove in the radial direction of the underwater ultraviolet lamp; a second buffer pad is disposed between the surfaces of the light-transmitting cover and the first positioning groove in the axial direction of the underwater ultraviolet lamp; and / or The first and second buffer pads are made of rubber.
4. The underwater ultraviolet lamp according to claim 1, characterized in that, The underwater ultraviolet lamp also includes a fixed tailstock and a first sealing structure, and the control circuit board is connected to the fixed tailstock; The outer surface of the fixed tailstock is provided with a second positioning groove extending circumferentially therefrom. The support body is sleeved on the outer side of the fixed tailstock. The inner sidewall of the support body is sealed against the surface of the second positioning groove in the radial direction of the underwater ultraviolet lamp. The first sealing structure is disposed between the protective cover and the surface of the second positioning groove in the axial direction of the underwater ultraviolet lamp; and / or The underwater ultraviolet lamp also includes a second sealing structure, and the protective cover includes a first cover and a second cover; the first cover is sleeved on the outside of the support body, the second cover is disposed on the outside of the ultraviolet lamp holder, and the second sealing structure is disposed between the first cover and the second cover.
5. The underwater ultraviolet lamp according to claim 1, characterized in that, The control circuit board includes a DC power input terminal, a ground terminal, a lamp board control circuit, and a controller. The lamp panel control circuit includes a dimming switch, and the ultraviolet lamp panel and the dimming switch are connected in series between the DC power input terminal and the ground terminal; the controller includes a pulse output port, and the pulse output port is connected to the dimming switch; The pulse output port is used to output a pulse signal to control the dimming switch to turn on or off, thereby controlling the brightness and / or operating mode of the ultraviolet lamp panel.
6. The underwater ultraviolet lamp according to claim 5, characterized in that, The ultraviolet lamp board includes a first ultraviolet lamp bead and a second ultraviolet lamp bead connected in parallel; the control circuit board includes a lamp bead switching circuit; one end of the first ultraviolet lamp bead and the second ultraviolet lamp bead are connected to the DC power input terminal through the lamp bead switching circuit; the other end of the first ultraviolet lamp bead and the second ultraviolet lamp bead are connected to the ground terminal through the dimming switch; The controller also includes a switching signal output port, which is connected to the lamp switching circuit and is used to connect the first ultraviolet lamp or the second ultraviolet lamp to the DC power input terminal.
7. The underwater ultraviolet lamp according to claim 6, characterized in that, The lamp switching circuit includes a first switching switch, a second switching switch, and a reverse circuit; the first switching switch is connected in series between the DC power input terminal and the first ultraviolet lamp; the second switching switch is connected in series between the DC power input terminal and the second ultraviolet lamp; the switching signal output port is connected to the control terminal of the first switching switch and is connected to the control terminal of the second switching switch through the reverse circuit.
8. The underwater ultraviolet lamp according to claim 5, characterized in that, The lamp control circuit further includes a sampling resistor, and the controller further includes a switching signal output port and a first voltage detection port. The first voltage detection port is connected between the dimming switch and one end of the sampling resistor, and the other end of the sampling resistor is connected to the ground terminal. When the voltage detected by the first voltage detection port of the controller is lower than the first preset voltage value, the controller controls the switching signal output port to output a switching signal.
9. The underwater ultraviolet lamp according to claim 5, characterized in that, The control circuit board further includes an irradiance detection circuit; the irradiance detection circuit includes an ultraviolet light sensor and a feedback resistor; the controller further includes a switching signal output port and a second voltage detection port; the feedback resistor and the ultraviolet light sensor are connected in series between the DC power input terminal and the ground terminal; the second voltage detection port is connected between the feedback resistor and the ultraviolet light sensor; When the voltage detected by the second voltage detection port of the controller is lower than the second preset voltage value, the controller controls the switching signal output port to output a switching signal.