Double-channel atomic fluorescence spectrophotometer calibration light source

Abstract

The utility model discloses a double channel atomic fluorescence spectrophotometer calibration light source, including: guide seat, light source main part and lamp bead heat dissipation subassembly, guide seat inner side is provided with air channel, light source main part is fixed installation on guide seat surface, one end and bottom surface of guide seat are respectively provided with air intake fan and air exhaust fan that are located air channel both ends, the lamp bead heat dissipation subassembly is located in the air intake fan. The light source body comprises a power source and a lamp bead, and the lamp bead heat dissipation assembly is fixedly installed at one end of the power source and connected to the periphery of the lamp bead in a sleeving mode. According to the utility model, independent heat dissipation channels of the power supply and the lamp beads are designed, so that the problem of mutual interference of heat of the power supply and the lamp beads is effectively avoided; a power supply and a lamp bead usually generate different heat in different working states, and if the heat dissipation of the power supply and the lamp bead is not independent, the temperature rises, so that the stability of a light source and the consistency of light output are influenced.

Description

Technical Field

[0001] This utility model relates to the field of fluorescence spectrophotometer technology, specifically to a calibration light source for a dual-channel atomic fluorescence spectrophotometer. Background Technology

[0002] Atomic fluorescence spectrometers (AFS) are widely used in environmental monitoring, food safety, and chemical analysis to detect the concentration of trace elements in samples. Their working principle is based on the fact that atoms undergo transitions and emit fluorescence of characteristic wavelengths when exposed to excitation light; the element content in the sample is then calculated by measuring the fluorescence intensity.

[0003] In atomic fluorescence spectrometers, the calibration light source plays a crucial role. Calibration light sources (such as neon lamps, krypton lamps, and deuterium lamps) provide a standard light source of known wavelengths to ensure the instrument can accurately measure the fluorescence wavelength and intensity of samples. The accuracy of the calibration light source directly affects the performance of the entire analytical system, especially in high-precision analyses where wavelength accuracy and intensity stability are particularly important.

[0004] However, in practical applications, existing calibration light sources (such as neon lamps, krypton lamps, and deuterium lamps) generate a significant amount of heat during long-term operation. This heat, especially in neon, krypton, and deuterium lamps, can cause excessively high temperatures, leading to fluctuations in the light output intensity and consequently affecting the wavelength accuracy and fluorescence intensity measurement precision of the photometer. Temperature fluctuations can also cause wavelength drift, resulting in errors in the photometer over extended use and impacting the accuracy of analytical results.

[0005] Therefore, in order to improve the stability and lifespan of calibration light sources and solve the problems of excessively high temperature, poor light source stability, unstable fixation, and insufficient heat dissipation, a new light source design is urgently needed that can effectively improve the heat dissipation performance of the light source and provide a precise fixation structure to ensure the stability of the light source during long-term high-efficiency operation. Utility Model Content

[0006] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0007] Therefore, the technical solution adopted by this utility model is as follows: a calibration light source for a dual-channel atomic fluorescence spectrometer, comprising: a guide seat, a light source body, and a lamp bead heat dissipation assembly. The guide seat has an air channel on its inner side, and the light source body is fixedly installed on the surface of the guide seat. An intake fan and an exhaust fan are respectively provided at one end and the bottom surface of the guide seat at both ends of the air channel. The light source body includes a power supply and a lamp bead. The lamp bead heat dissipation assembly is fixedly installed at one end of the power supply and sleeved on the outer periphery of the lamp bead. The lamp bead heat dissipation assembly includes an air cover and a flow guide cap. A swirl vane is fixedly connected to the outer periphery of the flow guide cap, and the swirl vane is fixedly connected to the inner wall of the air cover. A lamp chamber is opened on the inner side of the flow guide cap and sleeved on the surface of the lamp bead. A diversion hole is opened on the surface of the flow guide cap, which axially enters the inner side of the lamp chamber, and a guide flap located on the outer periphery of the flow guide cap is fixedly installed on one side of the diversion hole.

[0008] Technical effect: By designing the air passage and airflow path, and combining it with a high-efficiency heat dissipation component, this invention effectively reduces the heat accumulation of the calibration light source during long-term use, maintains the stability of the light source, and thus improves the accuracy and stability of the photometer.

[0009] In a preferred embodiment, the present invention can be further configured such that: the power supply is fixed inside the guide seat and located inside the air passage, and the intake fan and exhaust fan are used to form an airflow passage inside the air passage.

[0010] Technical effect: By optimizing the airflow channel design, the airflow can be smoothly passed over the power supply surface of the light source, which enhances the heat dissipation efficiency of the light source and avoids the performance degradation of the light source due to heat accumulation. The light source's LED beads and power supply surface are cooled independently.

[0011] In a preferred embodiment, the present invention can be further configured such that: the power supply surface is provided with a plurality of heat dissipation fins, and the heat dissipation fins are parallel to the airflow direction inside the air passage.

[0012] Technical effect: The heat dissipation fins are arranged parallel to the airflow, which increases the efficiency of heat conduction and convection, thereby greatly improving the heat dissipation performance of the light source and preventing the negative impact of temperature rise on the stability of the light source.

[0013] In a preferred embodiment, the present invention can be further configured such that: the wind cap is fixed on both sides of the guide seat, and the end of the wind cap is connected to the inner side of the air shroud; a cooling fan is fixedly installed at the end of the wind cap for introducing airflow into the inner side of the air shroud.

[0014] Technical effect: By combining the hood with the cooling fan, forced airflow is achieved into the air cover, which effectively improves heat dissipation efficiency, avoids temperature rise caused by poor airflow, and ensures stable operation of the light source.

[0015] In a preferred embodiment, the present invention can be further configured such that: the outer periphery of the guide cap and the inner side of the air shroud are provided with a gap, and a spiral airflow channel is formed by the swirl vanes.

[0016] Technical effect: By designing a spiral airflow channel, the airflow can be evenly distributed and accelerate the removal of heat from the overall temperature of the guide cap, thereby reducing the ambient temperature inside the lamp compartment and thus optimizing the heat dissipation effect.

[0017] In a preferred embodiment, the present invention can be further configured such that: the guide vane is used to guide airflow into the inner side of the diversion hole, and the diversion hole is axially aligned with the surface of the lamp bead, and a plurality of diversion holes are arranged in a spiral direction along the surface of the swirl vane.

[0018] Technical effect: By precisely arranging the diversion holes and guide vanes, part of the airflow is blocked by the guide vanes and guided into the lamp compartment through the diversion holes, which optimizes the distribution and guidance of airflow and cools the surface of the lamp beads.

[0019] In a preferred embodiment, the present invention can be further configured such that the air cover and the air guide cap are conical structures, and the lamp compartment is a conical cavity structure.

[0020] Technical benefits: The conical structure helps optimize the guidance and distribution of airflow, thereby improving the efficiency of airflow through the lamp chamber, promoting rapid heat dissipation, ensuring stable operation of the calibration light source under high power conditions, and extending the lifespan of the light source.

[0021] The beneficial effects achieved by this utility model are as follows:

[0022] 1. In this utility model, by designing independent heat dissipation channels for the power supply and the LED chips, the problem of mutual heat interference between the two is effectively avoided. The power supply and LED chips typically generate different amounts of heat under different operating conditions. If their heat dissipation is not independent, it will lead to temperature increases, thereby affecting the stability of the light source and the consistency of light output. Through independent heat dissipation design, the power supply effectively dissipates heat through heat dissipation fins and airflow channels, while the LED chips undergo specialized heat dissipation treatment through the air cover and airflow guide cap in the LED chip heat dissipation assembly.

[0023] 2. In this invention, by incorporating an air shroud and a flow guide cap into the lamp bead heat dissipation assembly, the distribution and flow path of airflow are optimized, thereby achieving effective cooling of the environment inside the lamp chamber. The air shroud and flow guide cap work together to help quickly expel hot air and guide cool air to the light source area, ensuring temperature control during light source operation. In particular, through the diversion holes and guide vanes, some airflow is guided to the surface of the lamp bead for direct cooling. This design effectively reduces the surface temperature of the lamp bead, minimizing the impact of temperature fluctuations on light source performance. Attached Figure Description

[0024] Figure 1This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the guide seat and its surface structure according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the bottom surface structure of the guide seat according to an embodiment of the present invention;

[0027] Figure 4 This is an exploded view of the LED heat dissipation assembly according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the internal structure of the flow guide cap according to an embodiment of the present invention.

[0029] Figure label:

[0030] 100. Guide seat; 110. Air hood; 101. Intake fan; 102. Exhaust fan; 111. Cooling fan;

[0031] 200. Main body of the light source; 210. Power supply; 220. LED beads;

[0032] 300. Lamp bead heat dissipation assembly; 310. Air cover; 320. Flow guide cap; 321. Lamp compartment; 322. Swirl vane; 323. Flow divider; 324. Guide flap. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0034] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0035] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a calibration light source for a dual-channel atomic fluorescence spectrometer.

[0036] Combination Figures 1-5 As shown, the present invention provides a calibration light source for a dual-channel atomic fluorescence spectrometer, comprising a guide 100, a light source body 200, and a lamp bead heat dissipation assembly 300. The specific structure is as follows:

[0037] The guide seat 100 serves as the support frame for the entire calibration light source, featuring an internal air passage design to ensure smooth airflow. An intake fan 101 and an exhaust fan 102 are located at either end of the guide seat 100, forming an airflow path to effectively remove the heat generated during the light source's operation.

[0038] The light source body 200 includes a power supply 210 and an LED chip 220. The power supply 210 is fixedly installed inside the guide seat 100, located inside the air passage. The LED chip 220 is the light-emitting core of the light source, responsible for emitting light of a specific wavelength.

[0039] The LED heat dissipation assembly 300 is fixedly installed at one end of the power supply 210 and sleeved on the outer periphery of the LED 220, mainly used for heat dissipation and protection of the light source. The LED heat dissipation assembly 300 includes a gas cover 310 and a flow guide cap 320, which work together to ensure the temperature control of the light source.

[0040] The air shroud 310 is the core heat dissipation component. Combined with the air guide cap 320, it is designed with a conical structure to effectively expel hot air from the light source area.

[0041] The flow guide cap 320 is fixedly connected to the swirl vane 322 on its outer periphery. The swirl vane 322 is fixedly connected to the inner wall of the air cover 310 to form a spiral airflow channel. The flow guide cap 320 has a lamp chamber 321 on its inner side. This structure can optimize the airflow distribution and make it flow evenly along the surface of the lamp bead, thereby effectively reducing the temperature.

[0042] The flow divider 323 is formed on the surface of the flow deflector 320 and axially extends into the inner side of the lamp housing 321. The guide vane 324 is located on the outer periphery of the flow deflector 320 and serves to guide the airflow, thereby improving the heat dissipation effect through precise airflow control.

[0043] In another embodiment, the power supply 210 has several heat dissipation fins on its surface, which are parallel to the airflow direction inside the air duct. This increases the efficiency of heat conduction and convection, further improving the heat dissipation performance of the light source and avoiding the negative impact of temperature rise on the stability of the light source.

[0044] In this embodiment, the hood 110 is fixed to both sides of the guide seat 100, and its end communicates with the inner side of the air shroud 310. A cooling fan 111 is fixedly installed at the end of the hood 110. The cooling fan 111 is responsible for forcing airflow into the inner side of the air shroud 310 to accelerate the heat dissipation process. This structure, through the combination of the hood 110 and the fan 111, effectively improves the airflow introduction efficiency and further enhances the heat dissipation effect.

[0045] The outer periphery of the air guide cap 320 has a gap with the inner side of the air shroud 310, and a spiral airflow channel is formed by the swirl vanes 322. This design ensures that the airflow can be evenly distributed, promotes the removal of heat and optimizes the overall heat dissipation effect, and ensures that the temperature of the light source is kept within a suitable range during operation.

[0046] The guide vane 324 is located on the side of the flow divider 323, and the airflow is guided into the inner side of the lamp housing 321 through the guide vane 324. Several flow dividers 323 are arranged in a spiral direction along the surface of the swirl vane 322. This arrangement makes the airflow more uniform when entering the lamp housing 321, thereby improving the heat dissipation effect and ensuring the stability of the light source.

[0047] The shroud 310 and the air deflector 320 are conical structures, and the lamp housing 321 is a conical cavity structure. The conical design optimizes the guidance and distribution of airflow, thereby improving the efficiency of airflow through the lamp housing, promoting rapid heat dissipation, and further enhancing the heat dissipation capacity of the calibration light source.

[0048] Through the above description of specific embodiments, it is clear how the technical solution of this utility model effectively solves the problems of poor heat dissipation and unstable light source in the original technology. Through the rational combination of air duct design, heat dissipation fins, air caps, and swirl vanes, this invention provides a highly efficient dual-channel atomic fluorescence spectrophotometer calibration light source, significantly improving the stability and accuracy of the light source under high-power operating conditions.

[0049] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A two-channel atomic fluorescence spectrometer calibration light source, characterized in that, include: The light source includes a guide seat (100), a light source body (200), and a lamp bead heat dissipation assembly (300). The guide seat (100) has an air passage on its inner side, and the light source body (200) is fixedly mounted on the surface of the guide seat (100). One end and the bottom surface of the guide seat (100) are respectively provided with an intake fan (101) and an exhaust fan (102) located at both ends of the air passage. The light source body (200) includes a power supply (210) and a lamp bead (220). The lamp bead heat dissipation assembly (300) is fixedly mounted on one end of the power supply (210) and sleeved around the outer periphery of the lamp bead (220). The heat dissipation assembly (300) includes an air shroud (310) and a flow guide cap (320). A swirl vane (322) is fixedly connected to the outer periphery of the flow guide cap (320), and the swirl vane (322) is fixedly connected to the inner wall of the air shroud (310). A lamp compartment (321) is opened on the inner side of the flow guide cap (320) and sleeved on the surface of the lamp bead (220). A diversion hole (323) is opened on the surface of the flow guide cap (320) and axially passes into the inner side of the lamp compartment (321). A guide flap (324) located on the outer periphery of the flow guide cap (320) is fixedly installed on one side of the diversion hole (323).

2. A dual channel atomic fluorescence photometer calibration light source according to claim 1, wherein, The power supply (210) is fixed inside the guide seat (100) and located inside the air passage. The intake fan (101) and exhaust fan (102) are used to form an airflow passage inside the air passage.

3. A dual channel atomic fluorescence photometer calibration light source as defined in claim 1 wherein, The power supply (210) has several heat dissipation fins on its surface, and the heat dissipation fins are parallel to the airflow direction inside the air passage.

4. A dual channel atomic fluorescence photometer calibration light source as defined in claim 1 wherein, The guide seat (100) has wind caps (110) fixed on both sides. The ends of the wind caps (110) are connected to the inner side of the air cover (310). A cooling fan (111) is fixedly installed at the end of the wind caps (110) to allow airflow into the inner side of the air cover (310).

5. A dual channel atomic fluorescence photometer calibration light source as defined in claim 1 wherein, The outer periphery of the flow guide cap (320) and the inner side of the air cover (310) are provided with a gap, and a spiral airflow channel is formed through the swirl vane (322).

6. A dual channel atomic fluorescence photometer calibration light source as defined in claim 1 wherein, The guide vane (324) is used to guide airflow into the inside of the diversion hole (323), and the diversion hole (323) is axially aligned with the surface of the lamp bead (220). Several diversion holes (323) are arranged in a spiral direction along the surface of the swirl vane (322).

7. A dual channel atomic fluorescence photometer calibration light source as defined in claim 1 wherein, The air hood (310) and the flow guide cap (320) are conical structures, and the lamp compartment (321) is a conical cavity structure.

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