Multi-core carbon dioxide laser with high response speed

Abstract

The utility model discloses a multi-core carbon dioxide laser with high response speed, which comprises a gas storage tube, a plurality of discharge tubes are arranged in the gas storage tube, water cooling tubes are hermetically arranged on the peripheries of the discharge tubes, one end part of each discharge tube is connected with a gas return tube, the discharge tubes are communicated with the gas storage tube through the gas return tubes, and the gas storage tube is communicated with the water cooling tubes through the water cooling tubes. One end of the discharge tube is provided with an anode binding post, and the other end of the discharge tube is provided with a cathode binding post. According to the multi-core carbon dioxide laser, the response speed of the laser can be greatly improved by adopting a novel air return pipe structure, and the multi-core carbon dioxide laser can be universally applied to the fields of high-power scanning, quick start and stop and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of lasers, and more specifically, relates to a multi-core carbon dioxide laser with high response speed. Background Art

[0002] At present, lasers have been widely used in industries, military, medical, scientific research and other aspects. Especially for carbon dioxide lasers, this is because carbon dioxide lasers have relatively large power, relatively high energy conversion efficiency, and relatively rich spectral lines, with dozens of spectral lines of laser output near 10 microns. Therefore, carbon dioxide lasers have been widely used in material processing, medical use, military weapons, scientific research and other aspects.

[0003] Current carbon dioxide lasers usually include a discharge tube, a water-cooling tube sleeved outside the discharge tube, a gas storage tube sleeved outside the water-cooling tube, a cathode and an anode respectively arranged at both ends of the discharge tube, and an output window and a reflection window arranged at both ends of the gas storage tube. The reflection window includes a reflection lens and a reflection lens cooling device, and the output window includes an output lens and an output lens cooling device. Carbon dioxide gas and other auxiliary gases are filled in the discharge tube; when a high voltage is applied to the electrodes, glow discharge occurs in the discharge tube, and after being reflected by the reflection lens and the output lens, a laser beam is formed and emitted from the output lens to obtain the final laser beam.

[0004] The conversion efficiency of carbon dioxide lasers is very high, but the highest will not exceed 40%. That is to say, more than 60% of the energy will be converted into the heat energy of the gas, causing the temperature to rise. The increase in gas temperature will cause the de-excitation of the upper laser level and the thermal excitation of the lower laser level, both of which will reduce the population inversion. Moreover, the increase in gas temperature will broaden the spectral line, resulting in a decrease in the gain coefficient. In particular, the increase in gas temperature will also cause the decomposition of carbon dioxide molecules, reducing the concentration of carbon dioxide molecules in the discharge tube. These factors will all cause the output power of the laser to decrease or even be damaged; to change the deficiencies of the existing technology, adjustments and improvements need to be made in the carbon dioxide conversion rate.

[0005] Existing high-power carbon dioxide lasers generally adopt a multi-core structure to refract and improve the power, and a gas return pipe structure is arranged at both ends of the discharge tube. In this way, when the laser is started, due to the limitation of the spiral gas return pipes at both ends, the carbon dioxide gas in the discharge tube is insufficient, resulting in a slow response speed of the laser, and ultimately the power cannot meet the usage requirements. Summary of the Utility Model

[0006] Purpose of the utility model: The purpose of the utility model is to solve the deficiencies in the existing technology and provide a multi-core carbon dioxide laser with high response speed.

[0007] Technical solution: A multi-core carbon dioxide laser with a high response speed according to the present utility model includes a gas storage pipe, wherein a plurality of discharge pipes are installed in the gas storage pipe, a water cooling pipe is hermetically installed around the discharge pipes, one end of the discharge pipe is connected and installed with a return air pipe, the discharge pipe is communicated with the gas storage pipe through the return air pipe, an anode terminal is installed at one end of the discharge pipe, and a cathode terminal is installed at the other end of the discharge pipe.

[0008] In some embodiments, the number of the discharge pipes is 2-4.

[0009] In some embodiments, the plurality of discharge pipes are installed parallel to each other.

[0010] In some embodiments, a water inlet is installed at one end of the water cooling pipe, and a water outlet is installed at the other end.

[0011] In some embodiments, an air inlet is installed at one end or both ends of the gas storage pipe.

[0012] In some embodiments, the return air pipe is installed on the side close to the anode terminal.

[0013] In some embodiments, the overall length of the return air pipe accounts for 1 / 8-1 / 4 of the length of the discharge pipe.

[0014] In some embodiments, the distances between the return air pipes and the ends on the plurality of discharge pipes are the same or arranged staggeredly.

[0015] In some embodiments, the side of the discharge pipe close to the cathode terminal is suspended or provided with a ventilation port, and the discharge pipe is communicated with the gas storage pipe through the ventilation port.

[0016] In some embodiments, the ventilation port includes at least one place.

[0017] Beneficial effects: The beneficial effects of the present utility model are as follows:

[0018] (1) For the multi-core laser of the present utility model, the return air pipe is only arranged at one end of the discharge pipe, and at the same time, the structure of the return air pipe is changed, so that the gas supply amount of the discharge pipe can be greatly improved, the response speed during the startup of the laser can be effectively improved, and it can be generally applicable to fields such as high-power (above 300W) scanning, etc.;

[0019] (2) For the multi-core laser of the present utility model, by arranging a suspended structure or a ventilation port structure at one end of the discharge pipe, the gas supply amount of the discharge pipe can be further improved, and the response speed during the startup of the laser can be more effectively improved;

[0020] (3) For the multi-core laser of the present utility model, the distances between the return air pipes on multiple discharge tubes and the ends are the same or arranged staggeredly. By adopting the staggered arrangement of the return air pipes, the internal space of the gas storage pipe can be reduced, thereby making the size of the entire laser more compact.

[0021] (4) The multi-core laser of the present utility model has a compact structure, reasonable design, high power, short startup response time, and high safety, and can be generally applicable to fields such as high-power (above 300W) scanning, fast start-stop, etc. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0023] Figure 2 is a schematic structural diagram of another embodiment of the present utility model. Detailed Embodiments

[0024] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. is the orientation or positional relationship shown, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it 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 directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] Next, the present utility model will be further described in detail through specific implementation examples in conjunction with the drawings. Embodiment 1

[0028] As Figure 1As shown in the figure, a dual-core carbon dioxide laser with a high response speed includes a gas storage pipe 1. Two discharge pipes 3 are installed inside the gas storage pipe 1. Water cooling pipes 2 are hermetically installed around the two discharge pipes 3. One end of the two discharge pipes 3 is connected and installed with a return air pipe 4. The discharge pipe 3 is communicated with the gas storage pipe 1 through the return air pipe 4. An anode terminal 7 is installed at one end of the discharge pipe 3, and a cathode terminal 8 is installed at the other end of the discharge pipe 3.

[0029] In this embodiment, as Figure 1 shown, the two discharge pipes 3 are installed in parallel inside the gas storage pipe 1, and part of both ends extends outside the gas storage pipe 1 for installing the anode terminal 7 or the cathode terminal 8.

[0030] In this embodiment, as Figure 1 shown, a water inlet 5 is installed at one end of the water cooling pipe 2, and a water outlet 9 is installed at the other end. The function of the water cooling pipe 2 is to provide water cooling during the operation of the laser. The specific positions of the water inlet 5 and the water outlet 9 for water inlet and outlet can be interchanged. The water cooling pipe 2 adopts a sealed structure, completely covering the outside of the discharge pipe 3, and the whole water cooling pipe 2 is located inside the gas storage pipe 1.

[0031] In this embodiment, as Figure 1 shown, in order to facilitate filling gas into the gas storage pipe 1, one end or both ends of the gas storage pipe 1 are installed with air inlets 6. The position of the air inlet 6 is preferably at the end of the gas storage pipe 1, so as to reduce the overall space.

[0032] In this embodiment, as Figure 1 shown, the return air pipe 4 is installed on the side close to the anode terminal 7. One end of the return air pipe 4 is communicated with the end of the discharge pipe 3, and then it adopts a spiral structure and surrounds the outside of the water cooling pipe 2. The other end of the return air pipe 4 is located inside the gas storage pipe 1.

[0033] In this embodiment, in order to ensure the speed of gas return and improve the response speed when the laser starts, the overall length of the return air pipe 4 accounts for 1 / 8 - 1 / 4 of the length of the discharge pipe 3. In this embodiment, the return air pipe 4 can also adopt a non-spiral structure, such as a straight pipe, which can further improve the instantaneous gas supply volume and the response speed when starting.

[0034] At the same time, as Figure 1 shown, the end of the discharge pipe 3 close to the cathode terminal 8 is arranged in a suspended structure, which can quickly increase the air intake volume and improve the response speed when starting.

[0035] In this embodiment, the distances between the return air pipes 4 and the ends on the multiple discharge pipes 3 are the same or arranged staggeredly. Adopting the staggered arrangement of the return air pipes 4 can reduce the space inside the gas storage pipe, so that the size of the whole laser is more compact. Example 2

[0036] As Figure 2 shown, a dual-core carbon dioxide laser with a high response speed includes a gas storage tube 1, in which two discharge tubes 3 are installed. Water cooling tubes 2 are hermetically installed around the two discharge tubes 3. One end of each of the two discharge tubes 3 is connected and installed with a return gas tube 4. The discharge tube 3 is communicated with the gas storage tube 1 through the return gas tube 4. An anode terminal 7 is installed at one end of the discharge tube 3, and a cathode terminal 8 is installed at the other end of the discharge tube 3.

[0037] In this embodiment, as Figure 2 shown, the two discharge tubes 3 are installed in parallel in the gas storage tube 1, and part of both ends extends outside the gas storage tube 1 for installing the anode terminal 7 or the cathode terminal 8.

[0038] In this embodiment, as Figure 2 shown, one end of the water cooling tube 2 is installed with a water inlet 5, and the other end is installed with a water outlet 9. The function of the water cooling tube 2 is to provide water cooling during the operation of the laser. The specific positions of the water inlet 5 and the water outlet 9 for water inlet and outlet can be interchanged. The water cooling tube 2 adopts a sealed structure, completely covering the outside of the discharge tube 3, and the whole water cooling tube 2 is located inside the gas storage tube 1.

[0039] In this embodiment, as Figure 2 shown, in order to facilitate filling gas into the gas storage tube 1, one end or both ends of the gas storage tube 1 are installed with gas inlets 6. The position of the gas inlet 6 is preferably at the end of the gas storage tube 1, so as to reduce the overall space.

[0040] In this embodiment, as Figure 2 shown, the return gas tube 4 is installed on the side close to the anode terminal 7. One end of the return gas tube 4 is communicated with the end of the discharge tube 3, and then it adopts a spiral structure and surrounds the outside of the water cooling tube 2. The other end of the return gas tube 4 is located inside the gas storage tube 1.

[0041] In this embodiment, in order to ensure the gas return speed and improve the response speed when the laser starts up, the overall length of the return gas tube 4 accounts for 1 / 8 - 1 / 4 of the length of the discharge tube 3. In this embodiment, the return gas tube 4 can also adopt a non-spiral structure, such as a straight tube, which can further improve the instantaneous gas supply volume and the response speed when starting up.

[0042] In this embodiment, the distances between the return gas tubes 4 and the ends on the multiple discharge tubes 3 are the same or arranged staggeredly. Adopting the staggered arrangement of the return gas tubes 4 can reduce the space inside the gas storage tube, so that the size of the whole laser is more compact.

[0043] In this embodiment, asFigure 2 As shown, an air vent 10 is provided on one side of the discharge tube 2 near the cathode terminal 8. The air vent 10 is located inside the gas storage tube 1, and the discharge tube 2 is communicated with the gas storage tube 1 through the air vent 10. In this embodiment, by providing the air vent 10, the gas in the gas storage tube 1 can be quickly transferred into the discharge tube 3, thereby further greatly improving the response speed.

[0044] In this embodiment, in order to further improve the gas supply volume, the air vent 10 includes at least one place and can be arranged in a structure with multiple openings. Embodiment 3

[0045] A three-core carbon dioxide laser with a high response speed includes a gas storage tube 1. Three discharge tubes 3 are installed inside the gas storage tube 1. Water cooling tubes 2 are hermetically installed around the three discharge tubes 3. One end of the three discharge tubes 3 is connected and installed with a return air tube 4, and the other end is provided with an air vent. The discharge tube 3 is communicated with the gas storage tube 1 through the return air tube 4 and the air vent. An anode terminal 7 is installed at one end of the discharge tube 3, and a cathode terminal 8 is installed at the other end of the discharge tube 3.

[0046] The above is only the preferred embodiment of the present invention and does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to make equivalent embodiments with equivalent changes, but as long as it does not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A multi-core carbon dioxide laser with high response speed, comprising a gas storage tube (1), characterized in that: A plurality of discharge tubes (3) are installed in the gas storage tube (1); a water cooling tube (2) is installed on the outer periphery of the discharge tube (3) in a sealed manner; a return air pipe (4) is connected to one end of the discharge tube (3); the discharge tube (3) is connected to the gas storage tube (1) via the return air pipe (4); an anode terminal (7) is installed at one end of the discharge tube (3); and a cathode terminal (8) is installed at the other end of the discharge tube (3); The overall length of the gas return pipe (4) accounts for 1 / 8 to 1 / 4 of the length of the discharge tube (3); the distance between the gas return pipe (4) and the end of the plurality of discharge tubes (3) is the same or staggered; a vent (10) is suspended or provided on one side of the discharge tube (3) close to the cathode terminal (8), and the discharge tube (3) is connected to the gas storage pipe (1) through the vent (10).

2. The multi-core carbon dioxide laser with high response speed according to claim 1, characterized in that: The number of the discharge tubes (3) is 2-4.

3. The multi-core carbon dioxide laser with high response speed according to claim 2, characterized in that: The plurality of discharge tubes (3) are installed in parallel with each other.

4. The multi-core carbon dioxide laser with high response speed according to claim 1, characterized in that: The water cooling pipe (2) has a water inlet installed at one end and a water outlet installed at the other end.

5. The multi-core carbon dioxide laser with high response speed according to claim 1, characterized in that: An air inlet (6) is installed at one or both ends of the air storage pipe (1).

6. The multi-core carbon dioxide laser with high response speed according to claim 1, characterized in that: The air return pipe (4) is installed on a side close to the anode terminal (7).

7. The multi-core carbon dioxide laser with high response speed according to claim 1, characterized in that: The vent (10) comprises at least one location.

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