Small-sized water-cooling optical fiber output head

Abstract

The utility model provides a miniature water-cooling optical fiber output head, which comprises an insertion core, a water-cooling sleeve and a tailstock, at least part of the insertion core is sleeved in an inner cavity of the water-cooling sleeve adjacent to the front end, the front end of the insertion core extends to the outside of the water-cooling sleeve, and the tailstock is arranged at the rear end of the water-cooling sleeve. The optical fiber is sealed in a through hole of the insertion core and penetrates through the water-cooling sleeve and the tailstock, a first water channel, a second water channel, a third water channel and a fourth water channel are arranged in the water-cooling sleeve, and a first water guide groove for communicating the first water channel with the fourth water channel and a third water guide groove for communicating the second water channel with the third water channel are formed in the rear end of the water-cooling sleeve. The front end of the water cooling sleeve is provided with a second water guide groove for communicating the first water channel with the second water channel and a fourth water guide groove for communicating the third water channel with the fourth water channel; a water inlet and a water outlet are formed in the outer wall of the tailstock; the first water guide groove is communicated with the water inlet, and the third water guide groove is communicated with the water outlet. The LED lamp is simple in manufacturing process, small in size and good in heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to the field of lasers, and in particular, to a small water-cooled fiber optic output head. Background Technology

[0002] With the increasing application of high-power lasers, ordinary fiber optic output heads can no longer meet the demands of high-power laser use. Heat dissipation is typically required for the fiber optic output heads, such as water-cooled ones. Existing commercially available fiber optic output heads for high-power lasers, such as QBH connectors, have complex manufacturing processes and are large in size, occupying significant space during use. This is especially inconvenient for applications requiring integration into equipment or dense fiber optic cabling. For example, QBH fiber optic connectors require connection to an adapter before connecting to subsequent optical processing modules, resulting in high cost and bulk. For instance, patent CN201757791U discloses an immersion-type water-cooled fiber optic head for laser transmission, but its structural complexity and miniaturization require improvement.

[0003] Most conventional small-volume fiber optic connectors do not use water cooling, which cannot meet the requirements of high-power lasers. Utility Model Content

[0004] This invention provides a small water-cooled fiber optic output head, which has a simple manufacturing process, small size, and good heat dissipation effect.

[0005] The technical solution of this utility model is as follows:

[0006] This utility model discloses a small water-cooled fiber optic output head, comprising: a ferrule, a water-cooled sleeve, and a tailstock. At least a portion of the ferrule is fitted into the inner cavity near the front end of the water-cooled sleeve, and the front end of the ferrule extends outside the water-cooled sleeve. The front end of the tailstock is mated with and fixed to the rear end of the water-cooled sleeve. The optical fiber is sealed in the internal through-hole of the ferrule and passes through the water-cooled sleeve and the tailstock. The rear end of the water-cooled sleeve has a first water guide groove and a third water guide groove, and the front end of the water-cooled sleeve has a second water guide groove and a fourth water guide groove. The water-cooled sleeve contains a first water channel, a second water channel, a third water channel, and a fourth water channel parallel to the longitudinal axis of the water-cooled sleeve. In this structure, the first water guide groove connects the first water channel and the fourth water channel; the second water guide groove connects the first water channel and the second water channel; the third water guide groove connects the second water channel and the third water channel; the fourth water guide groove connects the third water channel and the fourth water channel; the outer wall of the tailstock is provided with a water inlet and a water outlet, and the front end of the tailstock is provided with a water inlet interface and a water outlet interface; the water inlet is connected to the water inlet interface, and the water outlet is connected to the water outlet interface; the first water guide groove of the water-cooled sleeve is aligned with and connected to the water inlet interface, and the third water guide groove of the water-cooled sleeve is aligned with and connected to the water outlet interface.

[0007] Optionally, the first water guide channel, the second water guide channel, the third water guide channel, and the fourth water guide channel are all configured as arc-shaped.

[0008] Optionally, one end of the first water guide channel is connected to the first water channel, and the other end of the first water guide channel is connected to the fourth water channel; one end of the second water guide channel is connected to the first water channel, and the other end of the second water guide channel is connected to the second water channel; one end of the third water guide channel is connected to the second water channel, and the other end of the third water guide channel is connected to the third water channel; one end of the fourth water guide channel is connected to the third water channel, and the other end of the fourth water guide channel is connected to the fourth water channel.

[0009] Optionally, the outer wall of the insert and the interior of the water-cooling sleeve are provided with threads, so that the insert and the water-cooling sleeve are fixed by thread engagement.

[0010] Optionally, the front end of the water-cooled sleeve is equipped with an end cap, and the side of the end cap is provided with a threaded hole for installing a set screw to fix the insert.

[0011] Optionally, sealing rings are installed on the edges of the first water guide channel, the second water guide channel, the third water guide channel, and the fourth water guide channel, and the end cap and the tailstock are fastened with screws to press the sealing rings.

[0012] Optionally, the front end of the ferrule is provided with an end cap.

[0013] Optionally, the sidewall of the ferrule is provided with an adhesive dispensing hole for dispensing adhesive to fix the optical fiber.

[0014] Optionally, the rear end of the water-cooling sleeve is provided with a tailstock fixing hole for fixing the water-cooling sleeve to the tailstock.

[0015] Optionally, a locking nut is provided near the front end of the ferrule for connection with optical components.

[0016] The beneficial effects produced by the technical solution of this utility model are as follows:

[0017] This invention features a miniaturized design, with the water-cooling sleeve's water-guiding channels connected end-to-end to create a water circulation system. This allows for water circulation within a very small space, ensuring effective heat dissipation while reducing overall size. The water-cooled fiber optic output head is small in size, making it suitable for applications with dense fiber optic cabling. Its simple structure and manufacturing process result in easy component processing, convenient installation, and high production efficiency. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below.

[0019] Figure 1A This is a schematic planar view of the structure of the small water-cooled optical fiber output head of this utility model;

[0020] Figure 1B This is a perspective view of the structure of the small water-cooled fiber optic output head of this utility model.

[0021] Figure 2 It is along Figure 1A A cross-sectional view of a small to medium-sized water-cooled fiber optic output head taken from a planar BB section;

[0022] Figure 3 This is a perspective view of the structure of the water-cooling sleeve of the small water-cooled fiber optic output head of this utility model.

[0023] Figure 4 This is a perspective view of the tailstock of the small water-cooled optical fiber output head of this utility model.

[0024] Figure label:

[0025] 1-Flange; 11-End cap; 12-Through hole; 13-Glue dispensing hole; 2-Water cooling sleeve; 21-First water guide groove; 22-Second water guide groove; 23-Third water guide groove; 24-Fourth water guide groove; 25-First water channel; 26-Second water channel; 27-Third water channel; 28-Fourth water channel; 29-Tailplate fixing hole; 3-Tailplate; 31-Inlet; 32-Outlet; 33-Armor fixing hole; 34-Inlet connector; 35-Outlet connector; 4-End cap; 41-Threaded hole; 5-Fiber optic cable; 6-Locking nut. Detailed Implementation

[0026] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of systems consistent with some aspects of this invention as detailed in the appended claims.

[0027] The description of illustrative embodiments based on the principles of this invention is read in conjunction with the accompanying drawings, which are considered an integral part of the entire written description. Any references to directions or orientations in the description of the embodiments of this invention disclosed herein are merely for ease of description and are not intended to limit the scope of the invention in any way. Relative terms such as “downward,” “upward,” “horizontal,” “vertical,” “above,” “below,” “up,” “top,” “bottom,” and their derivatives (e.g., “horizontally,” “downward,” “upward,” etc.) should be interpreted as referring to the orientation as described or shown in the drawings discussed. These relative terms are for ease of description only and do not require the device to be constructed or operated in a particular orientation unless explicitly stated otherwise.

[0028] Terms such as “attachment,” “addition,” “connection,” “coupling,” and “interconnection” refer to relationships in which structures are directly or indirectly fixed or attached to each other through an intermediate structure, and where both are movable or rigidly attached or related unless otherwise expressly stated. Furthermore, the features and benefits of this invention are illustrated with reference to exemplary embodiments. Therefore, this invention is not expressly limited to such exemplary embodiments, which illustrate some possible non-limiting combinations of features that may exist alone or in combination with other features; the scope of this invention is defined by the appended claims.

[0029] like Figure 1A , Figure 1B and Figure 2As shown, the small water-cooled fiber optic output head of this utility model includes a ferrule 1, a water-cooled sleeve 2, and a tailstock 3. The water-cooled sleeve 2 includes an inner cavity. At least a portion of the ferrule 1 is fitted into the inner cavity near the front end of the water-cooled sleeve 2, and the front end of the ferrule 1 extends to the outside of the water-cooled sleeve 2. The front end of the tailstock 3 is connected to and fixed to the rear end of the water-cooled sleeve 2.

[0030] like Figure 3 As shown, the rear end of the water-cooled sleeve 2 is provided with a first water guide groove 21 and a third water guide groove 23, and the front end of the water-cooled sleeve 2 is provided with a second water guide groove 22 and a fourth water guide groove 24; the water-cooled sleeve 2 is provided with a first water channel 25, a second water channel 26, a third water channel 27 and a fourth water channel 28 parallel to the longitudinal axis of the water-cooled sleeve 2, wherein the first water guide groove 21 connects the first water channel 25 and the fourth water channel 28; the second water guide groove 22 connects the first water channel 25 and the second water channel 26; the third water guide groove 23 connects the second water channel 26 and the third water channel 27; and the fourth water guide groove 24 connects the third water channel 27 and the fourth water channel 28.

[0031] See Figure 3 The first water guide channel 21, the second water guide channel 22, the third water guide channel 23, and the fourth water guide channel 24 are all designed in an arc shape, that is, roughly an arc-shaped groove, and a sealing ring is installed on the edge of each water guide channel. One end of the first water guide channel 21 is connected to the first water channel 25, and the other end of the first water guide channel 21 is connected to the fourth water channel 28; one end of the second water guide channel 22 is connected to the first water channel 25, and the other end of the second water guide channel 22 is connected to the second water channel 26; one end of the third water guide channel 23 is connected to the second water channel 26, and the other end of the third water guide channel 23 is connected to the third water channel 27; one end of the fourth water guide channel 24 is connected to the third water channel 27, and the other end of the fourth water guide channel 24 is connected to the fourth water channel 28.

[0032] like Figure 4 As shown, the outer wall of the tailstock 3 is provided with a water inlet 31 and a water outlet 32, and the front end of the tailstock 3 is provided with a water inlet interface 34 and a water outlet interface 35; the water inlet 31 is connected to the water inlet interface 34, and the water outlet 32 ​​is connected to the water outlet interface 35; the first water guide groove 21 of the water-cooled sleeve 2 is aligned with and connected to the water inlet interface 34, and the third water guide groove 23 of the water-cooled sleeve 2 is aligned with and connected to the water outlet interface 35.

[0033] The ferrule 1 has a through hole 12 along its longitudinal axis. The optical fiber 5 is sealed within the through hole 12 of the ferrule 1 and passes through the water-cooling sleeve 2 and the tailstock 3. The ferrule 1 has an end cap 11 at its front end, which is installed in the end cap fixing hole at the front end of the optical fiber 5. The end cap 11 is a common structure in high-power applications, and its functions are: 1) to increase the output end-face spot area, reduce the end-face energy density, and avoid damage to the optical fiber end-face. Simultaneously, the end cap 11 is relatively large, allowing for rapid heat dissipation through contact with the metal ferrule; 2) when the optical fiber is directly output, there is approximately 4% reflection at the fiber end-face. At high power, reflected light can easily cause internal damage to the laser. The end cap 11 is coated with an anti-reflection film at its output end, which can improve output power and reduce reflected light. Although optical fiber end-faces can also be coated, the process is difficult, and the film is easily burned off at high power.

[0034] The side wall of the ferrule 1 is provided with a dispensing hole 13 that penetrates the thickness of the side wall, through which glue can be dispensed to fix the optical fiber 5.

[0035] Both the outer wall of the insert 1 and the inner wall of the water-cooling sleeve 2 are threaded. The insert 1 and the water-cooling sleeve 2 are fixed by threaded engagement. The dense arrangement of threads can increase the contact area and improve the heat dissipation efficiency.

[0036] The water-cooling sleeve 2 has an end cap 4 installed at its front end. The end face of the end cap 4 has a through hole for the insert 1 to pass through. The side of the end cap 4 has a threaded hole 41 for installing a set screw to fix the insert 1 and ensure that the insert 1 and the water-cooling sleeve 2 are not loose. The insert 1 occupies part or all of the inner cavity of the water-cooling sleeve 2. Generally, the insert 1 only needs to be inserted into part of the inner cavity of the water-cooling sleeve 2 to meet the heat dissipation requirements.

[0037] The inlet 31 and outlet 32 ​​of the tailstock 3 can each be equipped with a quick-connect fitting (not shown) for inputting and outputting cooling water.

[0038] The cooling process of the cooling water is as follows: The cooling water enters the first water guide groove 21 of the water-cooled sleeve 2 through the water inlet 31 of the tailstock 3 via the water inlet interface 34, and passes through the first water channel 25 and the fourth water channel 28. The water flowing through the first water channel 25 enters the second water guide groove 22, and then flows through the second water channel 26 to the third water guide groove 23, and then is discharged from the outlet 32 ​​through the outlet interface 35. The water flowing through the fourth water channel 28 enters the fourth water guide groove 24, and then flows through the third water channel 27 to the third water guide groove 23, and then is discharged from the outlet 32 ​​through the outlet interface 35.

[0039] The tailstock 3 is provided with an armor fixing hole 33. Preferably, the tailstock 3 has an armor fixing hole 33 at its rear end and a threaded hole on its side wall. The armor is inserted into the tailstock 3, and a set screw is installed in the threaded hole to ensure a firm connection between the armor and the tailstock 3. The armor is used to protect the output optical fiber and does not directly contact the ferrule 1; usually, one end of the armor is fixed to the output head, and the other end is fixed to the laser.

[0040] The water-cooled sleeve 2 has a tailstock fixing hole 29 at its rear end. Preferably, the tailstock fixing hole 29 is a threaded hole, and preferably includes two tailstock fixing holes 29, which are used to fix the water-cooled sleeve 2 and the tailstock 3.

[0041] The end cap 4 at the front end of the water-cooling sleeve 2 and the tailstock 3 at the rear end are fastened to the main body of the water-cooling sleeve 2 with screws. After fastening, the sealing ring set on the edge of the water guide groove is pressed to ensure structural sealing and reduce the cooling water leakage rate.

[0042] A locking nut 6 with built-in threads is provided on the outer wall of the front end of the insert 1. It is used to connect with optical devices such as lenses, which can realize quick assembly and disassembly of the insert and ensure the stability of the connection.

[0043] This invention features a miniaturized design, with the water-cooling sleeve's water-guiding channels connected end-to-end to create a water circulation system. This allows for water circulation within a very small space, ensuring effective heat dissipation while reducing overall size. The water-cooled fiber optic output head is small in size, making it suitable for applications with dense fiber optic cabling. Its simple structure and manufacturing process result in easy component processing, convenient installation, and high production efficiency.

[0044] The above-described embodiments are merely specific implementations of this utility model, used to illustrate the technical solutions of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model. These modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A small water-cooled optical fiber output head, characterized in that, include: The ferrule, water-cooled sleeve, and tailstock are provided. At least a portion of the ferrule is fitted within the inner cavity of the water-cooled sleeve near its front end, and the front end of the ferrule extends outside the water-cooled sleeve. The front end of the tailstock is mated with and fixed to the rear end of the water-cooled sleeve. An optical fiber is sealed in an internal through-hole of the ferrule and passes through the water-cooled sleeve and the tailstock. The water-cooling sleeve has a first water guide groove and a third water guide groove at its rear end, and a second water guide groove and a fourth water guide groove at its front end. The water-cooling sleeve contains a first water channel, a second water channel, a third water channel, and a fourth water channel parallel to its longitudinal axis. The first water guide groove connects the first water channel and the fourth water channel; the second water guide groove connects the first water channel and the second water channel; the third water guide groove connects the second water channel and the third water channel; and the fourth water guide groove connects the third water channel and the fourth water channel. The outer wall of the tailstock is provided with a water inlet and a water outlet, and the front end of the tailstock is provided with a water inlet interface and a water outlet interface; the water inlet is connected to the water inlet interface, and the water outlet is connected to the water outlet interface; the first water guide groove of the water-cooling sleeve is aligned with and connected to the water inlet interface, and the third water guide groove of the water-cooling sleeve is aligned with and connected to the water outlet interface.

2. The miniature water-cooled fiber optic output head according to claim 1, characterized in that, The first water guide channel, the second water guide channel, the third water guide channel, and the fourth water guide channel are all designed to be arc-shaped.

3. A small water-cooled optical fiber output head according to claim 2, characterized in that, One end of the first water guide channel is connected to the first water channel, and the other end of the first water guide channel is connected to the fourth water channel; one end of the second water guide channel is connected to the first water channel, and the other end of the second water guide channel is connected to the second water channel; one end of the third water guide channel is connected to the second water channel, and the other end of the third water guide channel is connected to the third water channel; one end of the fourth water guide channel is connected to the third water channel, and the other end of the fourth water guide channel is connected to the fourth water channel.

4. A small water-cooled optical fiber output head according to claim 1, characterized in that, The outer wall of the insert and the inside of the water-cooling sleeve are threaded, so that the insert and the water-cooling sleeve are fixed by thread engagement.

5. A small water-cooled optical fiber output head according to claim 1, characterized in that, The water-cooled sleeve is equipped with an end cap at its front end, and the end cap has a threaded hole on its side for installing a set screw to fix the insert.

6. A small water-cooled optical fiber output head according to claim 5, characterized in that, The edges of the first water guide channel, the second water guide channel, the third water guide channel and the fourth water guide channel are all equipped with sealing rings, and the end cap and the tail seat are fastened with screws to press the sealing rings.

7. A small water-cooled optical fiber output head according to claim 1, characterized in that, The front end of the ferrule is provided with an end cap.

8. A small water-cooled optical fiber output head according to claim 1, characterized in that, The side wall of the ferrule is provided with an adhesive dispensing hole for dispensing adhesive to fix the optical fiber.

9. A small water-cooled optical fiber output head according to claim 1, characterized in that, The water-cooling sleeve has a tailstock fixing hole at its rear end for fixing the water-cooling sleeve to the tailstock.

10. A small water-cooled optical fiber output head according to claim 1, characterized in that, A locking nut is provided near the front end of the ferrule for connecting to the optical device.

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