Integrated small ultraviolet curing light source system

Abstract

The utility model discloses an integrated small-sized ultraviolet curing light source system, which belongs to the field of ultraviolet light sources and comprises a shell, and the shell is divided into an upper space and a lower space by a partition plate fixedly arranged in the shell; a fan is mounted in the upper space, and an air inlet is formed in the side wall and / or the top wall; a power source and a lamp holder assembly are installed in the lower space, and a light transmitting opening is formed in the bottom wall. The partition plate is provided with an air outlet, and an air guide structure used for guiding airflow to the lamp holder assembly is installed at the air outlet. The power source is electrically connected with the draught fan and the lamp holder assembly, and an integrated light detection plate used for detecting wind pressure, light intensity and temperature information is further installed in the lower space. The ultraviolet curing light source cooling device is simple in structure and reasonable in design, cooling can be carried out, related personnel can know the working state of the ultraviolet curing light source in time in the working process, and corresponding and timely disposal can be conveniently carried out according to the working state of the ultraviolet curing light source.

Description

Technical Field

[0001] The utility model relates to the technical field of ultraviolet curing, in particular to an integrated small ultraviolet curing light source system. Background Art

[0002] UV curing is a photochemical process that uses high-intensity ultraviolet light to rapidly cure or dry liquid "UV-hardenable materials" such as inks, coatings, adhesives, or fillers. It is a highly efficient polymerization reaction method for non-volatile curing. Since it does not involve solvent volatilization, it is energy-saving and environmentally friendly. It is widely used in manufacturing processes such as printing, plating, and coating, as well as in the assembly of products and materials, enabling assembly line production and increased automation in many industrial and manufacturing fields.

[0003] Plasma electrodeless UV lamp is the main UV curing light source. When in use, it emits UV light by exciting the plasma in the lamp tube through radio frequency or microwave energy. Magnetrons with microwave output power of 2KW and 3KW are used as microwave generating sources and are widely used in electrodeless UV lamp products.

[0004] UV curing light sources generate a lot of heat when in use. Therefore, to ensure the stability and continuity of their operation, they need to be cooled. The usual practice is to equip them with a cooling fan, and the airflow blown by the cooling fan dissipates heat and cools the UV curing light source, such as the solutions disclosed in CN213855530U and CN215354480U.

[0005] While the above-mentioned existing technical solutions can cool the heat-generating components in UV-curing light sources, in actual operation, the outside world cannot promptly know the internal conditions of the UV-curing light source. For example, if the cooling air pressure decreases due to an abnormality, if this is not discovered in time, the heat-generating components in the UV-curing light source will not be cooled promptly and effectively, which may cause damage to the components. For another example, when the light-emitting components in the UV-curing light source exhibit an abnormality, it is difficult for the outside world to promptly detect this. Currently, the only way to verify this is through the UV-curing results of the cured product. This has a significant lag, resulting in a decrease in product yield and additional costs. Summary of the Invention

[0006] In view of the problem in the prior art that the working status of a UV curing light source cannot be timely understood during use, the purpose of the present utility model is to provide an integrated small UV curing light source system to at least partially solve the above problem.

[0007] In order to achieve the above purpose, the technical solution of the utility model is:

[0008] An integrated small-scale ultraviolet curing light source system includes a shell, which is divided into an upper space and a lower space by a partition fixed inside the shell; a fan is installed inside the upper space, and an air inlet is provided on the side wall and / or the top wall; a power supply and a lamp holder assembly are installed inside the lower space, and a light-transmitting port is provided on the bottom wall; an exhaust port is provided on the partition, and an air guide structure for directing airflow to the lamp holder assembly is installed at the exhaust port; wherein the power supply is electrically connected to the fan and the lamp holder assembly, and an integrated light detection board for detecting wind pressure, light intensity and temperature information is also installed inside the lower space.

[0009] In a preferred embodiment, the lamp head assembly includes a magnetron, a waveguide cavity and a resonant cavity arranged in sequence from top to bottom, wherein ventilation holes are provided on the waveguide cavity and the resonant cavity, and a lamp tube and a reflector are installed in the resonant cavity.

[0010] In a preferred embodiment, the bottom surface of the resonant cavity is open, and the light-transmitting port is adapted to the bottom opening of the resonant cavity.

[0011] In a preferred embodiment, the air guide structure is located in the lower space and is connected to the exhaust port, and the air guide structure includes at least one inclined plate, the upper end of the inclined plate is connected to the side of the exhaust port away from the lamp head assembly, and the inclined plate is inclined from top to bottom toward the lamp head assembly.

[0012] In a preferred embodiment, the air guide structure further includes a vertical plate, and the upper end of the vertical plate is connected to a side of the air outlet close to the lamp head assembly.

[0013] In a preferred embodiment, the power supply is arranged on a lower side of the inclined plate.

[0014] In a preferred embodiment, the integrated light detection board includes a circuit board on which a processor chip and a light intensity sensor, a pressure sensor, and a temperature sensor communicatively connected to the processor chip are mounted.

[0015] In a preferred embodiment, the reflective sheet is configured to absorb infrared light and reflect ultraviolet light.

[0016] In a preferred embodiment, it also includes a controller, an alarm and a switch, the switch is connected in series between the power supply and the lamp head assembly, the controller is electrically connected to the alarm, the switch and the integrated light detection board, and the controller is used to control the working status of the alarm and the switch according to the information detected by the integrated light detection board.

[0017] In a preferred embodiment, the fan is fixedly mounted on the top surface of the partition, a support frame is fixedly mounted in the lower space, and the lamp head assembly and the power supply are both fixedly mounted on the support frame.

[0018] By adopting the above technical solution, the beneficial effect of the utility model is that: due to the setting of the integrated light detection board for detecting wind pressure, light intensity and temperature information in the lower space of the shell, the UV light intensity information, wind pressure information and temperature information in the shell can be collected through the light intensity sensor, pressure sensor and temperature sensor on the integrated light detection board, so that the staff can know the working status of the ultraviolet curing light source in time, and facilitate corresponding and timely disposal according to its working status. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the present utility model.

[0020] Figure 2 It is a structural diagram of another direction of the utility model.

[0021] Figure 3 This is the main view of the utility model after removing the outer shell.

[0022] Figure 4 It is a top view of the utility model.

[0023] Figure 5 For the Figure 4 Sectional view along line AA.

[0024] Figure 6 This is a schematic diagram of the circuit connection of the integrated light detection board in the present utility model.

[0025] Figure 7 This is a schematic diagram of the UV light intensity signal amplification circuit in the present invention.

[0026] Figure 8 This is a schematic diagram of the pressure signal amplification circuit in the present invention.

[0027] Figure 9 This is a schematic diagram of the temperature signal amplifying circuit in the present invention.

[0028] In the figure: 1-housing, 2-partition, 3-fan, 4-support frame, 5-power supply, 6-lamp head assembly, 61-magnetron, 62-waveguide cavity, 63-resonant cavity, 64-lamp tube, 65-reflector, 7-air guide structure, 71-inclined plate, 72-vertical plate, 8-integrated light detection board, 81-processor chip, 82-light intensity sensor, 83-pressure sensor, 84-temperature sensor, 85-UV light intensity signal amplifying circuit, 86-pressure signal amplifying circuit, 87-temperature signal amplifying circuit, 9-controller, 10-alarm, 11-protective net, 12-light transmission port, 13-handle, 14-threading port. DETAILED DESCRIPTION

[0029] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0030] It should be noted that, in the description of the present invention, the terms "up", "down", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the description of the structure of the present invention shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it cannot be understood as a limitation on the present invention.

[0031] The "first" and "second" in this technical solution are only used to distinguish the same or similar structures, or corresponding structures with similar functions, and are not an arrangement of the importance of these structures, nor do they have any ranking, size comparison, or other meanings.

[0032] In addition, unless otherwise expressly specified or limited, the terms "installed" and "connected" should be understood broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two structures. Those skilled in the art can understand the specific meanings of the above terms in this utility model based on the overall concept of this utility model and the specific context of this solution.

[0033] like Figure 1-5 As shown, an embodiment of the utility model discloses an integrated small-scale UV curing light source system, including a housing 1, a partition 2, a fan 3, a support frame 4, a power supply 5, a lamp head assembly 6, an air guide structure 7 and an integrated light detection board 8.

[0034] The housing 1 is divided into an upper space and a lower space by a partition 2 fixed therein. Alternatively, in other embodiments, the housing 1 can be constructed by stacking two independent shells, with the partition 2 separating the stack (i.e., the partition 2 serves as the top and bottom surfaces of the two shells). This allows the two smaller shells to be assembled into a larger housing 1, facilitating manufacturing. Typically, handles 13 are symmetrically provided on the left and right side walls of the housing 1.

[0035] The fan 3 is arranged in the upper space of the housing 1. The fan 3 generally includes a housing and a body mounted in the housing. The air outlet of the housing faces and is fixed to one side of the top surface of the partition 3 by screws. Accordingly, the partition 3 is provided with an exhaust port corresponding to the air outlet of the fan 3. In addition, air inlets are provided on the side walls and top wall of the upper space of the housing 1 (in other preferred embodiments, air inlets can be provided on either the side walls or the top wall alone). A protective net 11 is generally installed on the air inlet. Accordingly, the housing of the fan 3 is also provided with an air inlet, which is also provided with a protective net 11.

[0036] A support frame 4 is fixedly installed in the lower space of the outer shell 1, and the power supply 5 and the lamp head assembly 6 are fixedly installed on the support frame 4. The power supply 5 is electrically connected to the fan 3 and the lamp head assembly 6 through cables. The power supply 5 is configured as a transformer, and a wire threading opening 14 is opened on the side wall of the lower space of the outer shell 1 to facilitate the wiring of the power supply cable connected to the transformer.

[0037] In this embodiment, the lamp head assembly 6 specifically includes a magnetron 61, a waveguide cavity 62, and a resonant cavity 63 arranged in order from top to bottom. Both the waveguide cavity 62 and the resonant cavity 63 are provided with vents to facilitate the entry of cooling airflow. A lamp tube 64 and a reflector 65 are also mounted within the resonant cavity 63. The reflector 65 is applied to the inner wall of the resonant cavity 63 and is configured to absorb infrared light and reflect ultraviolet light, thereby reflecting the ultraviolet light emitted by the lamp tube 64 as much as possible toward the open bottom end of the resonant cavity 63. The principles and operating processes of the lamp head assembly 6 are well-known in the prior art and will not be further described in this embodiment.

[0038] It should be noted that the bottom surface of the resonant cavity 63 is open, and a light-transmitting opening 12 is provided on the bottom wall of the shell 1. The light-transmitting opening 12 is not only opposite to the bottom opening of the resonant cavity 63, but also the shapes and sizes of the two are adapted to each other, so that the ultraviolet light emitted by the lamp tube 64 and the ultraviolet light reflected by the reflective sheet 65 can pass through the shell 1.

[0039] Among them, the lamp holder assembly 6 is staggered with the exhaust port on the partition 3, that is, the cooling airflow discharged from the exhaust port does not blow directly toward the top surface of the lamp holder assembly 6, but an air guide structure 7 is installed at the exhaust port to guide the airflow to the side of the lamp holder assembly 6, so that each heat-generating component in the lamp holder assembly 6 can be better blown by the cooling airflow.

[0040] In this embodiment, the air guide structure 7 is located within the lower space of the housing 1. The upper portion of the air guide structure 7 is connected to the exhaust port of the partition 3 and its lower portion is opposite the side surface of the lamp assembly 6. Specifically, the air guide structure 7 includes an inclined plate 71. The upper end of the inclined plate 71 is connected to the side of the lamp assembly 6 (i.e., the right side in the figure) away from the exhaust port. The inclined plate 71 is tilted from top to bottom toward the lamp assembly 6 (i.e., tilted to the left), thereby directing the cooling airflow discharged from the exhaust port on the right side toward the lamp assembly 6 on the left side. The cooling airflow is then simultaneously blown to the magnetron 61 and the waveguide cavity 62. The cooling airflow then flows through the vents in the waveguide cavity 62 to the resonant cavity 63. The cooling airflow then flows through the vents in the resonant cavity 63 to cool the lamp 64 and the reflector 65. The power supply 5 is arranged below and to the side of the inclined plate 71, and the power supply 5 is flush with the magnetron 61.

[0041] It is understood that the air guide structure 7 generally includes a vertical plate 72, the upper end of which is connected to the side of the exhaust port near the lamp head assembly 6 (i.e., the left side in the figure), thereby preventing cooling airflow from leaking and increasing the amount of airflow flowing to the lamp head assembly 6. It is also easy to understand that the air guide structure 7 is connected between the front and rear side walls of the space below the housing 1, thereby forming an air guide channel with the help of the side walls of the housing 1.

[0042] In which, an integrated light detection board 8 for detecting wind pressure, light intensity and temperature information is also installed in the lower space of the shell 1. The integrated light detection board 8 is specifically fixedly connected to the outer wall of the waveguide cavity 62 through a connecting piece. In this embodiment, the integrated light detection board 8 includes a circuit board (not shown in the figure) and a processor chip 81, a light intensity sensor 82, a pressure sensor 83 and a temperature sensor 84 installed on the circuit board, wherein the processor chip 81 is preferably an STM32 CPU chip.

[0043] like Figure 6 As shown, a UV light intensity signal amplifying circuit 85, a pressure signal amplifying circuit 86, and a temperature signal amplifying circuit 87 are also installed on the circuit board. The above-mentioned light intensity sensor 82 is connected to the UV signal input end of the processor chip 81 through the UV light intensity signal amplifying circuit 85, the pressure sensor 83 is connected to the pressure signal input end of the processor chip 81 through the pressure signal amplifying circuit 86, and the temperature sensor 84 is connected to the temperature signal input end of the processor chip 81 through the temperature signal amplifying circuit 87.

[0044] like Figure 7 As shown, the UV light intensity signal amplifying circuit 85 includes: an operational amplifier A1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1, and a capacitor C2; the positive signal input terminal of the operational amplifier A1 is connected to the negative interface of the light intensity sensor 82 and then to ground, and the negative signal input terminal of the operational amplifier A1 is connected to the positive interface of the light intensity sensor 82; one end of the resistor R1 is connected to the positive interface of the light intensity sensor 82, and the other end is connected in series with the resistor R2 and then to the signal output terminal of the operational amplifier A1; one end of the capacitor C1 is connected to the positive interface of the light intensity sensor 82, and the other end is connected to the common connection terminal of the resistor R1 and the resistor R2; one end of the resistor R3 is connected to the common connection terminal of the resistor R1 and the resistor R2, and the other end is grounded; one end of the resistor R4 is connected to the signal output terminal of the operational amplifier A1, and the other end is connected to the UV signal input terminal of the processor chip 81; one end of the capacitor C2 is connected to the common connection terminal of the resistor R4 and the UV signal input terminal of the processor chip 81, and the other end is grounded; the GND terminal of the operational amplifier A1 is grounded, and the power input terminal is connected to a 3.3V power supply.

[0045] like Figure 8 As shown, the pressure signal amplification circuit 86 includes: an operational amplifier A2, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a capacitor C3, and a capacitor C4; the positive signal input terminal of the operational amplifier A2 is connected to the resistors R5 and R6 and then to pin 5 of the pressure sensor 83; one end of the resistor R7 is connected to the common end where the resistors R5 and R6 are connected, and the other end is grounded; one end of the resistor R8 is connected to a 3.3V power supply and the other end is connected to pin 6 of the pressure sensor 83; one end of the resistor R9 is grounded and the other end is connected to pin 2 of the pressure sensor 83; one end of the capacitor C3 is grounded and the other end is connected to the common end where the resistor R9 and pin 2 of the pressure sensor 83 are connected; the negative signal input terminal of the operational amplifier A2 is connected to the signal output terminal of the operational amplifier A2 and then to the pressure signal input terminal of the processor chip 81; one end of the capacitor C4 is grounded and the other end is connected to the common end where the signal output terminal of the operational amplifier A2 and the UV signal input terminal of the processor chip 81 are connected; the GND terminal of the operational amplifier A2 is grounded, and the power input terminal is connected to the 3.3V power supply.

[0046] like Figure 9As shown, the temperature signal amplifying circuit 87 includes: an operational amplifier A3, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, an adjustable resistor RW1, and a capacitor C5; the positive signal input terminal of the operational amplifier A2 is connected to the resistor R10 and then to pin 3 of the temperature sensor 84; one end of the resistor R11 is grounded, and the other end is connected to the positive signal input terminal of the operational amplifier A2; the negative signal input terminal of the operational amplifier A2 is connected to the resistor R12 and the adjustable resistor RW1 and then to pin 2 of the temperature sensor 84, and pin 1 of the temperature sensor 84 is grounded; one end of the resistor R13 is connected to the resistor R12 and the adjustable resistor RW1. The common end of the resistor R14 is connected to the common end of the resistor R10 and the 3-pin of the temperature sensor 84, and the other end is connected to the common end of the resistor R13 and the 3.3V power supply; one end of the resistor R15 is connected to the negative signal input end of the operational amplifier A2, and the other end is connected to the signal output end of the operational amplifier A2; one end of the resistor R16 is connected to the signal output end of the operational amplifier A2, and the other end is connected to the temperature signal input end of the processor chip 81; one end of the capacitor C5 is grounded, and the other end is connected to the common end of the resistor R16 and the temperature signal input end of the processor chip 81; the GND end of the operational amplifier A3 is grounded, and the power input end is connected to the 3.3V power supply.

[0047] The housing 1 also includes a controller 9, an alarm 10, and a switch (not shown). The switch is connected in series between the power supply 5 and the lamp assembly 6 and is configured as an electrically controlled switch suitable for electrical control. The controller 9 is electrically connected to the alarm 10, the switch, and the integrated light detection board 8 via cables. The controller 9 and alarm 10 are typically located outside the housing 1, such as on the outer wall, for easy viewing by personnel.

[0048] Controller 9 is used to control the operating status of alarm 10 and the switch based on the information (wind pressure, temperature, and UV light intensity) detected by integrated light detection board 8. Specifically, the UV light intensity, wind pressure, and temperature information within housing 1 are collected by light intensity sensor 82, pressure sensor 83, and temperature sensor 84 on integrated light detection board 8. Processor chip 81 then transmits the UV light intensity, pressure, and temperature signals, respectively, to controller 9 via a communication interface, connected to UV light intensity signal amplification circuit 85, pressure signal amplification circuit 86, and temperature signal amplification circuit 87. Upon receiving this information, controller 9 determines the operating status of the UV curing light source and, if abnormal, controls alarm 10 to sound an alarm and shuts off the UV curing light source.

[0049] During use, when the cooling air pressure blown in by the fan 3 is lower than the cooling air pressure required by the lamp head assembly 6, the integrated light detection board 8 will send the detected real-time air pressure information to the processor chip 81, and then the processor chip 81 will send it to the controller 9. The controller 9 will send an alarm signal to the alarm 10, causing the alarm 10 to work and alarm, and then cut off the switch to stop the lamp head assembly 6 from working; similarly, when the temperature information is abnormal and the UV light intensity information is abnormal, it can also be detected in time by the integrated light detection board 8, and the alarm and power-off operation will be performed through the controller 9.

[0050] It is easy to understand that the UV curing light source is usually equipped with a UV control system, which is used to control the working status of the fan 3 and the lamp head assembly 6. That is, the above-mentioned switch is actually part of the UV control system. Therefore, after receiving abnormal wind pressure, temperature and / or UV light intensity information, the controller 9 will send a signal to the UV control system, thereby causing the UV control system to perform a power-off operation.

[0051] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. An integrated small-scale UV curing light source system, characterized by: It comprises an outer shell, which is divided into an upper space and a lower space by a partition fixed inside the outer shell; a fan is installed inside the upper space, and an air inlet is provided on the side wall and / or the top wall; a power supply and a lamp holder assembly are installed inside the lower space, and a light-transmitting port is provided on the bottom wall; an exhaust port is provided on the partition, and an air guide structure for directing the airflow to the lamp holder assembly is installed at the exhaust port; wherein the power supply is electrically connected to the fan and the lamp holder assembly, and an integrated light detection board for detecting wind pressure, light intensity and temperature information is also installed inside the lower space.

2. The integrated small-sized UV curing light source system according to claim 1, characterized in that: The lamp head assembly includes a magnetron, a waveguide cavity and a resonant cavity arranged in sequence from top to bottom, wherein the waveguide cavity and the resonant cavity are both provided with ventilation holes, and a lamp tube and a reflector are installed in the resonant cavity.

3. The integrated small-sized UV curing light source system according to claim 2, characterized in that: The bottom surface of the resonant cavity is open, and the light-transmitting opening is adapted to the bottom opening of the resonant cavity.

4. The integrated small-sized UV curing light source system according to claim 1, characterized in that: The air guide structure is located in the lower space and is connected to the exhaust port. The air guide structure includes at least one inclined plate, the upper end of the inclined plate is connected to the side of the exhaust port away from the lamp head assembly, and the inclined plate is inclined from top to bottom toward the lamp head assembly.

5. The integrated small-sized UV curing light source system according to claim 4, characterized in that: The air guide structure further includes a vertical plate, the upper end of which is connected to a side of the air outlet close to the lamp head assembly.

6. The integrated small-sized UV curing light source system according to claim 4, characterized in that: The power supply is arranged on a lower side of the inclined plate.

7. The integrated small-sized UV curing light source system according to claim 1, characterized in that: The integrated light detection board comprises a circuit board on which a processor chip and a light intensity sensor, a pressure sensor and a temperature sensor communicatively connected with the processor chip are mounted.

8. The integrated small-sized UV curing light source system according to claim 1, characterized in that: The reflective sheet is configured to absorb infrared light and reflect ultraviolet light.

9. The integrated small-sized UV curing light source system according to claim 1, characterized in that: It also includes a controller, an alarm and a switch, the switch is connected in series between the power supply and the lamp head assembly, the controller is electrically connected to the alarm, the switch and the integrated light detection board, and the controller is used to control the working status of the alarm and the switch according to the information obtained by detection by the integrated light detection board.

10. The integrated small-sized UV curing light source system according to claim 1, characterized in that: The fan is fixedly mounted on the top surface of the partition, a support frame is fixedly mounted in the lower space, and the lamp head assembly and the power supply are both fixedly mounted on the support frame.

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