A lens automatic cleaning device for a gas analyzer used for sea-air flux observation

Abstract

The utility model relates to a kind of automatic cleaning device for gas analyzer lens of sea-air flux observation, it is related to marine field.It includes fixed frame, cleaning liquid tank is placed in one side of the fixed frame, the cleaning liquid tank is connected with control box by water pipe, the control box is connected with cleaning machine box by flushing conduit, the cleaning machine box is fixedly connected on fixed frame, drive mechanism is equipped in the cleaning machine box, the drive mechanism is connected with open-circuit gas analyzer and two-way spray head, the two-way spray head is connected with flushing conduit, two lenses are equipped on the open-circuit gas analyzer.

Description

Technical Field

[0001] This invention relates to the marine field, and more specifically, to an automatic cleaning device for the lens of a gas analyzer used for air-sea flux observation. Background Technology

[0002] As a crucial boundary condition between the ocean and atmosphere, the accurate representation of air-sea flux is essential for the development of coupled air-sea numerical models. Air-sea flux exchange processes largely determine and regulate the dynamic and thermodynamic structure within the boundary layer, playing a key role in the accurate forecasting of marine disasters such as storm surges and typhoons, and also having significant implications for global climate change and the carbon cycle. Currently, the most effective method for studying air-sea flux is through in-situ observations combined with theoretical analysis to achieve a quantitative representation of air-sea fluxes, which can then be applied to numerical models. However, in-situ observational data on air-sea fluxes are still relatively scarce, especially for air-sea heat fluxes and CO2 fluxes. The most direct method for observing air-sea fluxes is the widely used Eddy Covariance Method (EC). Based on direct eddy covariance observational data, this study validates and updates existing air-sea flux algorithms and develops new air-sea flux parameterization schemes.

[0003] A core component of the eddy covariance flux system is the open-circuit infrared gas analyzer (IRGA), used for in-situ high-frequency measurement of H2O and CO2 concentrations. Combined with high-frequency three-dimensional wind data from a three-dimensional ultrasonic anemometer, the eddy covariance method is used to process the data to obtain air-sea heat flux, water vapor flux, and CO2 flux. The infrared gas analyzer measures the concentrations of carbon dioxide and water vapor in the air within the near-infrared absorption bands of carbon dioxide and water vapor (approximately 4.26 μm and 2.59 μm, respectively). However, its optical lens is directly exposed to the harsh marine environment, significantly affected by strong winds, sea fog, and marine aerosols. The lens is also prone to contamination with sea salt particles and other foreign matter, which can obstruct the measurement optical path of the infrared gas analyzer, resulting in data signal strength far below the minimum signal strength value (0.8) required by scientific research, leading to missing or unusable measurement data.

[0004] In field observations of air-sea flux, reliance is often placed on offshore tower platforms and buoys. The maintenance costs of these platforms and equipment are extremely high, resulting in a maintenance cycle of 3-6 months for air-sea flux monitoring equipment. However, preliminary experiments have shown that the signal strengths of H2O and CO2 concentrations drop significantly below 0.8 after 15 days. To avoid data loss, improve data quality, and ensure data continuity, the current method involves manually cleaning the analyzer lenses periodically with lens cleaning paper. This offshore operation is costly; furthermore, the lens cleaning paper causes wear and tear on the analyzer lenses, reducing the lifespan of open-circuit gas analyzers, further impacting data quality, and increasing equipment costs.

[0005] To avoid data loss, save costs, and obtain long-term, continuous, high-quality observation data, a new device is needed that can automatically clean the optical lens of a gas analyzer based on signal strength. This device should be integrated into the existing eddy covariance system to achieve long-term, continuous, and high-quality observation of ocean-air flux. Summary of the Invention

[0006] The purpose of this invention is to solve the problems mentioned in the background art, and to propose an automatic cleaning device for the lens of a gas analyzer used for air-sea flux observation.

[0007] The technical solution adopted by this invention to solve its technical problem is: An automatic cleaning device for the lens of a gas analyzer used for air-sea flux observation includes a fixed frame with a cleaning fluid tank placed on one side. The cleaning fluid tank is connected to a control box via a water pipe. The control box is connected to a cleaning machine housing via a flushing conduit. The cleaning machine housing is fixedly connected to the fixed frame and has a drive mechanism inside. The drive mechanism is connected to an open-circuit gas analyzer and a bidirectional nozzle. The bidirectional nozzle is connected to a flushing conduit. The open-circuit gas analyzer has two lenses.

[0008] Furthermore, the fixing frame includes a vertical rod, a horizontal support plate at the top of the vertical rod, an upper connecting rod at the top of the horizontal support plate, an extension plate fixedly connected to the upper connecting rod, and a support plate on the vertical rod.

[0009] Furthermore, a control box is placed on the support plate.

[0010] Furthermore, the control box has a built-in charging controller, data acquisition controller, high-pressure pump and three-way solenoid valve. The side of the control box is equipped with a water inlet, an air inlet, a signal control line interface for the cleaning machine and a signal line interface for the open-circuit gas analyzer.

[0011] Furthermore, the top of the cleaning fluid tank is equipped with a water tank connector and a water inlet.

[0012] Furthermore, the driving mechanism includes a drive motor and a drive gear. The drive motor is fixedly connected inside the cleaning chamber, and the output shaft of the drive motor is connected to the drive gear. The inner wall of the cleaning chamber is provided with an upper sliding groove and a lower sliding groove. An upper sliding plate is inserted between the two upper sliding grooves, and a lower sliding plate is inserted between the two lower sliding grooves. The upper sliding plate is directly above the lower sliding plate. An upper rack is provided at the bottom of the upper sliding plate, and a lower rack is provided at the top of the lower sliding plate. The drive gear meshes with the upper rack and the lower rack respectively. An open-circuit gas analyzer is installed on the lower sliding plate. A connecting pipe is provided on the upper sliding plate. A telescopic pipe is connected to the left end of the connecting pipe. A flushing conduit is connected to the telescopic pipe. An inclined pipe is connected to the right end of the connecting pipe. A bidirectional nozzle is provided at the end of the inclined pipe.

[0013] Furthermore, the connecting pipe is fixedly connected to the upper slide plate by clamps.

[0014] Furthermore, the upper slide plate is provided with upper sliding guide blocks on both sides that cooperate with the upper sliding groove.

[0015] Furthermore, the lower slide plate is provided with lower sliding guide blocks on both sides that cooperate with the lower sliding groove.

[0016] Furthermore, the open-circuit gas analyzer includes an analyzer body, with an external connecting rod on each of the upper and lower sides of the analyzer body. The external connecting rods are equipped with mounting plates, and each of the two mounting plates is equipped with a lens.

[0017] Furthermore, the angled tube is angled downwards and to the left, placing the bidirectional nozzle directly in front of the analyzer body.

[0018] Furthermore, a linkage mechanism is provided inside the cleaning chamber, which enables the open-circuit gas analyzer to rotate horizontally by 90°.

[0019] Furthermore, the linkage mechanism includes a fixed rack, a first bevel gear, a second bevel gear, and a driven gear. A rotating shaft seat is provided on the sliding plate, and a rotating shaft is rotatably connected inside the rotating shaft seat. A driven gear is fixedly connected to one end of the rotating shaft, and a first bevel gear is fixedly connected to the other end. A rotating sleeve is provided on the sliding plate, and an analyzer body is rotatably connected inside the rotating sleeve. A second bevel gear is provided at the left end of the analyzer body. The first bevel gear and the second bevel gear mesh. The fixed rack meshes with the driven gear. The two outlet ends of the bidirectional nozzle are horizontally arranged.

[0020] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention can automatically judge and clean the gas analyzer lens based on signal strength, avoiding the high cost of regular manual cleaning and the inconvenience of offshore operations, thus improving the timeliness and accuracy of cleaning; the use of bidirectional nozzles for rinsing and blowing cleaning avoids wear on the lens caused by lens cleaning paper, extends the service life of the open-circuit gas analyzer, and improves the quality of observation data; through the automatic cleaning device, the cleanliness of the gas analyzer lens is guaranteed, thereby ensuring the continuity and accuracy of measurement data, providing a guarantee for long-term, continuous, and high-quality observation of air-sea flux. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram of the drive mechanism; Figure 4 for Figure 2 A cross-sectional view along the reverse side of BB; Figure 5 This is a diagram showing the internal layout of the control box.

[0022] Figure 6 This is a structural diagram of the side of the control box.

[0023] Figure 7 This is a schematic diagram of the cleaning fluid tank.

[0024] Figure 8 This is a schematic diagram of the structure of the second embodiment of the present invention; Figure 9 This is a schematic diagram of the linkage mechanism; The components include: 1. Fixing frame; 11. Vertical rod; 12. Horizontal support plate; 13. Support plate; 14. Upper connecting rod; 15. Outer extension plate; 2. Cleaning fluid tank; 21. Water tank connector; 22. Water inlet; 3. Control box; 31. Charging controller; 32. Data acquisition controller; 33. High-pressure pump; 34. Three-way solenoid valve; 35. Water inlet; 36. Air inlet; 37. Cleaning machine signal control line interface; 38. Open-circuit gas analyzer signal line interface; 41. Water pipe; 42. Rinsing conduit; 5. Cleaning machine casing; 51. Upper chute; 52. Lower chute; 6. Open-circuit gas analyzer; 61. Analyzer body; 62. External connecting rod; 63. Mounting plate; 64. Lens; 71. Drive motor; 72. Drive gear; 73. Lower slide plate; 731. Lower sliding guide block; 74. Lower rack; 75. Upper slide plate; 751. Upper sliding guide block; 76. Upper rack; 81. Telescopic tube; 82. Clamp; 83. Connecting tube; 84. Inclined tube; 85. Bidirectional nozzle; 91. Fixed rack; 92. Rotary shaft seat; 93. Rotary shaft; 94. Driven gear; 95. First bevel gear; 96. Second bevel gear; 97. Rotating sleeve. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. The present invention will be further described with reference to the accompanying drawings and embodiments: like Figures 1-7As shown, an automatic cleaning device for the lens of a gas analyzer used for air-sea flux observation includes a fixed frame 1. A cleaning fluid tank 2 is placed on one side of the fixed frame 1. The cleaning fluid tank 2 is connected to a control box 3 via a water pipe 41. The control box 3 is connected to a cleaning machine box 5 via a flushing conduit 42. The cleaning machine box 5 is fixedly connected to the fixed frame 1. A drive mechanism is provided inside the cleaning machine box 5. The drive mechanism is connected to an open-circuit gas analyzer 6 and a bidirectional nozzle 85. The bidirectional nozzle 85 is connected to the flushing conduit 42. The open-circuit gas analyzer 6 is provided with two lenses 64. The drive mechanism enables the bidirectional nozzle 85 and the lenses 64 to move closer or further apart.

[0026] In at least one embodiment, the fixing frame 1 includes a vertical rod 11, a horizontal support plate 12 is provided at the top of the vertical rod 11, an upper connecting rod 14 is provided at the top of the horizontal support plate 12, an extension plate 15 is fixedly connected to the upper connecting rod 14, and a support plate 13 is provided on the vertical rod 11.

[0027] Furthermore, a control box 3 is placed on the support plate 13.

[0028] In at least one embodiment, the control box 3 has a built-in charging controller 31, a data acquisition controller 32, a high-pressure pump 33 and a three-way solenoid valve 34. The side of the control box 3 is provided with a water inlet 35, an air inlet 36, a cleaning machine signal control line interface 37 and an open-circuit gas analyzer signal line interface 38.

[0029] As a preferred embodiment, the data acquisition controller 32 is a Campbell CR1000X from the USA, the charging controller 31 is a Morningstar SunSaver-10L from the USA, the three-way solenoid valve 34 is a water-air dual-use solenoid valve, the high-pressure pump 33 is a water-air dual-use low-power high-pressure pump, the water inlet 35, the air inlet 36, etc. are all quick connectors, and the cleaning machine signal control line interface 37 and the open-circuit gas analyzer signal line interface 38 are aviation connectors.

[0030] In at least one embodiment, such as Figure 7 As shown, the top of the cleaning fluid tank 2 is provided with a water tank connector 21 and a water inlet 22.

[0031] In at least one embodiment, the driving mechanism includes a drive motor 71 and a drive gear 72. The drive motor 71 is fixedly connected inside the cleaning chamber 5. The output shaft of the drive motor 71 is connected to the drive gear 72. The inner wall of the cleaning chamber 5 is provided with an upper sliding groove 51 and a lower sliding groove 52. An upper sliding plate 75 is inserted between the two upper sliding grooves 51, and a lower sliding plate 73 is inserted between the two lower sliding grooves 52. The upper sliding plate 75 is directly above the lower sliding plate 73. An upper rack 76 is provided at the bottom of the upper sliding plate 75, and a lower rack 74 is provided at the top of the lower sliding plate 73. The drive gear 72 meshes with the upper rack 76 and the lower rack 74 respectively. An open-circuit gas analyzer 6 is installed on the lower sliding plate 73. A connecting pipe 83 is provided on the upper sliding plate 75. A telescopic pipe 81 is connected to the left end of the connecting pipe 83. A flushing conduit 42 is connected to the telescopic pipe 81. An inclined pipe 84 is connected to the right end of the connecting pipe 83. A bidirectional nozzle 85 is provided at the end of the inclined pipe 84.

[0032] Furthermore, the connecting pipe 83 is fixedly connected to the upper slide plate 75 by a clamp 82.

[0033] Furthermore, the upper sliding plate 75 is provided with upper sliding guide blocks 751 on both sides, which cooperate with the upper sliding groove 51.

[0034] Furthermore, the sliding plate 73 is provided with sliding guide blocks 731 on both sides that cooperate with the sliding groove 52.

[0035] Furthermore, the open-circuit gas analyzer 6 includes an analyzer body 61, with an external connecting rod 62 on each of the upper and lower sides of the analyzer body 61. The external connecting rod 62 is provided with a mounting plate 63, and each of the two mounting plates 63 is provided with a lens 64.

[0036] Furthermore, such as Figure 4 As described above, when viewed along the BB direction, the inclined tube 84 is angled downwards and to the left, so that the bidirectional nozzle 85 is directly in front of the analyzer body 61. This allows the bidirectional nozzle 85 to move to the right while the two lenses 64 move to the left when the drive mechanism is activated, so that the bidirectional nozzle 85 is in the middle of the two lenses 64, which facilitates lens cleaning.

[0037] In operation, the charging controller 31 supplies power to the open-circuit gas analyzer 6 and the data acquisition controller 32. The open-circuit gas analyzer 6 is connected to the data acquisition controller 32 via the open-circuit gas analyzer signal line interface 38. The data acquisition controller 32 collects real-time data from the open-circuit gas analyzer 6 and the signal strength of the analyzer lens. When the signal strength is lower than a preset threshold (e.g., 0.8), it sends a cleaning command to the charging controller 31.

[0038] After receiving the instruction, the charging controller 31 controls the three-way solenoid valve 34 to switch to the cleaning fluid channel, and at the same time starts the high-pressure pump 33. The cleaning fluid in the cleaning fluid tank 2 is delivered to the bidirectional nozzle 85 through the water pipe 41, the three-way solenoid valve 34 and the high-pressure pump 33 via the flushing conduit 42.

[0039] The drive motor 71 starts, driving the drive gear 72 to rotate. The drive gear 72 meshes with the upper rack 76 and the lower rack 74 respectively, causing the upper slide plate 75 and the lower slide plate 73 to move closer or further apart. The upper slide plate 75 drives the bidirectional nozzle 85 to move to the right, and the lower slide plate 73 drives the open-circuit gas analyzer 6 to move to the left, so that the bidirectional nozzle 85 gradually moves closer to the two lenses 64.

[0040] Once the bidirectional nozzle 85 reaches the appropriate position, the high-pressure pump 33 sprays cleaning fluid at a certain pressure from the bidirectional nozzle 85 to rinse the two lenses 64. After rinsing for a period of time, the three-way solenoid valve 34 switches to the gas channel, and the high-pressure pump 33 sends high-pressure gas through the air inlet 36 on the side of the control box 3, the three-way solenoid valve 18, the high-pressure pump 17, and the rinsing conduit 5 to the bidirectional nozzle 85 to blow away any residual dust or condensed water droplets on the lenses 64, achieving a thorough cleaning.

[0041] After cleaning is completed, the drive motor 71 reverses, the upper slide plate 75 and lower slide plate 73 reset, and the bidirectional nozzle 85 separates from the lens 64. The three-way solenoid valve 34 returns to its initial state, and the device awaits the next cleaning command.

[0042] After a cleaning cycle is completed, if the signal strength of the open-circuit gas analyzer is still lower than the set threshold, the acquisition controller 32 will control the three-way solenoid valve 34 to connect the cleaning fluid and air in the cleaning fluid tank 2 in sequence, and rinse and blow the lens 64 again, and repeat this process.

[0043] Because the two lenses 64 are vertically positioned, this design causes some water to spray onto the mounting plate 63 when the bidirectional nozzle 85 is spraying water. After air is blown through, sometimes some water remains on the upper surface of the mounting plate 63, and this water drips along the edge of the upper lens 64 onto the lower lens 64. Figure 8 and Figure 9 As shown, in this embodiment, the open-circuit gas analyzer 6 can be rotated horizontally by 90° to eliminate this defect.

[0044] Specifically, a linkage mechanism is provided inside the cleaning chamber 5, which enables the open-circuit gas analyzer 6 to rotate horizontally by 90°.

[0045] The linkage mechanism includes a fixed rack 91, a first bevel gear 95, a second bevel gear 96, and a driven gear 94. A rotating shaft seat 92 is provided on the lower slide plate 73, and a rotating shaft 93 is rotatably connected inside the rotating shaft seat 92. One end of the rotating shaft 93 is fixedly connected to the driven gear 94, and the other end is fixedly connected to the first bevel gear 95. A rotating sleeve 97 is provided on the lower slide plate 73, and an analyzer body 61 is rotatably connected inside the rotating sleeve 97. A second bevel gear 96 is provided at the left end of the analyzer body 61. The first bevel gear 95 and the second bevel gear 96 mesh. The fixed rack 91 meshes with the driven gear 94. Correspondingly, the two outlet ends of the bidirectional nozzle 85 are horizontally positioned to match the position of the lens 64 after the open-circuit gas analyzer 6 has rotated horizontally by 90°.

[0046] When the drive mechanism is activated, it not only moves the bidirectional multi-functional nozzle 85 to the right, but also moves the two lenses 64 to the left. The linkage mechanism also allows the open-circuit gas analyzer 6 to rotate horizontally by 90°. As viewed along the BB direction, the connecting pipe 83 is located at the upper right of the analyzer body 61, and the inclined pipe 84 is angled downwards to the left, placing the bidirectional nozzle 85 directly in front of the analyzer body 61. When the gas analyzer 6 rotates counterclockwise by 90° so that the two lenses 64 are horizontal, there will be no interference with the connecting pipe 83 or the inclined pipe 84. Thus, the bidirectional nozzle 85 is positioned in the middle of the two lenses 64, facilitating lens cleaning.

[0047] In operation, the data acquisition controller 32 collects signal strength data in real time. When the signal strength is below a threshold, it sends a cleaning command to the charging controller 31. Upon receiving the command, the charging controller 31 switches the three-way solenoid valve 34 and starts the high-pressure pump 33, delivering cleaning fluid to the bidirectional nozzle 85. The drive motor 71 starts, driving the drive gear 72 to rotate, causing the upper slide plate 75 and the lower slide plate 73 to move closer together. The bidirectional nozzle 85 moves to the right, and the open-circuit gas analyzer 6 moves to the left. Simultaneously, the driven gear 94 on the lower slide plate 73 rotates under the action of the fixed rack 91, driving the rotating shaft 93 and the first bevel gear 95 to rotate. The first bevel gear 95 meshes with the second bevel gear 96, causing the analyzer body 61 to rotate 90° counterclockwise around the rotating sleeve 97, bringing the two lenses 64 to a horizontal position. After the bidirectional nozzle 85 reaches the appropriate position, it rinses and blows air to clean the horizontally placed lenses 64, preventing residual water droplets on the mounting plate from falling onto the lower lenses. After cleaning, the drive motor 71 reverses, the upper slide plate 75 and lower slide plate 73 reset, and the bidirectional nozzle 85 separates from the lens 64. Simultaneously, under the action of the linkage mechanism, the analyzer body 61 rotates 90° clockwise, returning to its initial position. The three-way solenoid valve 34 returns to its initial state, and the device awaits the next cleaning command.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic lens cleaning device for a gas analyzer used for air-sea flux observation, characterized in that, The device includes a fixed frame, on one side of which a cleaning fluid tank is placed. The cleaning fluid tank is connected to a control box via a water pipe. The control box is connected to a cleaning machine housing via a flushing conduit. The cleaning machine housing is fixedly connected to the fixed frame. The cleaning machine housing contains a drive mechanism. The drive mechanism is connected to an open-circuit gas analyzer and a bidirectional nozzle. The bidirectional nozzle is connected to a flushing conduit. The open-circuit gas analyzer has two lenses. The driving mechanism includes a drive motor and a drive gear. The drive motor is fixedly connected inside the cleaning chamber. The output shaft of the drive motor is connected to the drive gear. The inner wall of the cleaning chamber is provided with an upper sliding groove and a lower sliding groove. An upper sliding plate is inserted between the two upper sliding grooves, and a lower sliding plate is inserted between the two lower sliding grooves. The upper sliding plate is directly above the lower sliding plate. An upper rack is provided at the bottom of the upper sliding plate, and a lower rack is provided at the top of the lower sliding plate. The drive gear meshes with the upper rack and the lower rack respectively. An open-circuit gas analyzer is installed on the lower sliding plate. A connecting pipe is provided on the upper sliding plate. A telescopic pipe is connected to the left end of the connecting pipe. A flushing conduit is connected to the telescopic pipe. An inclined pipe is connected to the right end of the connecting pipe. A bidirectional nozzle is provided at the end of the inclined pipe. A linkage mechanism is provided inside the cleaning chamber, which enables the open-circuit gas analyzer to rotate horizontally by 90°. The linkage mechanism includes a fixed rack, a first bevel gear, a second bevel gear, and a driven gear. A rotating shaft seat is provided on the sliding plate, and a rotating shaft is rotatably connected inside the rotating shaft seat. A driven gear is fixedly connected to one end of the rotating shaft, and a first bevel gear is fixedly connected to the other end. A rotating sleeve is provided on the sliding plate, and an analyzer body is rotatably connected inside the rotating sleeve. A second bevel gear is provided at the left end of the analyzer body. The first bevel gear and the second bevel gear mesh. The fixed rack meshes with the driven gear. The two outlet ends of the bidirectional nozzle are horizontally arranged.

2. The automatic cleaning device for the lens of a gas analyzer used for air-sea flux observation according to claim 1, characterized in that, The fixing frame includes a vertical rod, a horizontal support plate at the top of the vertical rod, an upper connecting rod at the top of the horizontal support plate, an extension plate fixedly connected to the upper connecting rod, and a support plate on the vertical rod.

3. The automatic cleaning device for the lens of a gas analyzer used for air-sea flux observation according to claim 1, characterized in that, The connecting pipe is fixedly connected to the upper slide plate by clamps.

4. The automatic cleaning device for the lens of a gas analyzer used for air-sea flux observation according to claim 1, characterized in that, The upper slide plate is provided with upper sliding guide blocks on both sides that cooperate with the upper sliding groove.

5. The automatic cleaning device for the lens of a gas analyzer used for air-sea flux observation according to claim 1, characterized in that, The lower slide plate is provided with lower sliding guide blocks on both sides that cooperate with the lower sliding groove.

6. The automatic cleaning device for the lens of a gas analyzer used for air-sea flux observation according to claim 1, characterized in that, The open-circuit gas analyzer includes an analyzer body, with an external connecting rod on each of the upper and lower sides of the analyzer body. The external connecting rods are equipped with mounting plates, and each of the two mounting plates is equipped with a lens.

7. An automatic lens cleaning device for a gas analyzer used for air-sea flux observation according to claim 1, characterized in that, The angled tube is angled downwards and to the left, positioning the bidirectional nozzle directly in front of the analyzer body.

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