Numerical control water-cooling rotating mechanism for laser crystal

By designing a CNC water-cooled rotating mechanism for laser crystals, the problem of thermal damage caused by insufficient cooling in solid-state lasers was solved, achieving uniform cooling of the crystals and high-energy laser output, thus improving the reliability and economy of the lasers.

CN116207587BActive Publication Date: 2025-11-18ANYANG RUIHENG CNC MASCH TOOL CO LTD
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Patent Information

Application Number
CN202310175413.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-02-28
Publication Date
2025-11-18
Estimated Expiration
2043-02-28

AI Technical Summary

Technical Problem

Insufficient cooling of the gain medium (crystal) in existing solid-state lasers leads to continuous heat generation and damage, affecting the lifespan of the equipment.

Method used

A CNC water-cooled rotating mechanism for laser crystals was designed. The crystal is driven to rotate through a transmission mechanism, and forced cooling is achieved by using coolant channels and a sealing structure to ensure uniform cooling of the crystal during rotation.

Benefits of technology

It achieves uniform cooling of the laser crystal, avoids damage caused by heat accumulation, supports continuous output of miniaturized and high-energy lasers, and improves the durability and economy of the laser.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides a laser crystal numerical control water-cooling rotating mechanism, which comprises a box body, a transmission mechanism fixedly installed in the inside of the box body, a numerical control driving device fixedly installed on the outside of the box body and having an output shaft clamped in the inside of the transmission mechanism, and supporting legs arranged at the bottoms of the two sides of the box body, the inside of one side of the box body is respectively communicated with a liquid inlet and a liquid outlet, and the outside of the box body away from the numerical control driving device is fixedly installed with two symmetrically distributed outlet sealing covers, the inside of each outlet sealing cover movably sheaths two end covers which are fixedly sheathed in the inside of the transmission mechanism and symmetrically distributed. The laser crystal numerical control water-cooling rotating mechanism is used in cooperation with the first gear, the second gear and the gear shaft, so that the water-cooling rotating mechanism can drive the crystal to rotate under the driving of the numerical control driving device, the crystal different parts can emit laser in turn, the heat of the crystal can be forcedly taken away by the cooling liquid around the crystal, the crystal is fully cooled in time and space, and the problem of the damage of the laser crystal due to heating is solved.
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Description

Technical Field

[0001] This invention relates to the field of solid-state laser cooling technology, specifically disclosing a CNC water-cooled rotating mechanism for laser crystals. Background Technology

[0002] Solid-state lasers are lasers that use solid-state laser materials as their working medium. The working medium consists of a small amount of activating ions uniformly doped into a crystal or glass that serves as the matrix material.

[0003] In existing solid-state lasers, the gain medium (crystal) is generally fixed. Continuous laser light is generated by optical excitation that forces high-energy particles to transition to lower energy levels. During operation, the crystal continuously generates heat, and insufficient cooling can lead to crystal damage. This is a significant factor contributing to the failure of existing solid-state lasers. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, this application aims to provide a CNC water-cooled rotating mechanism for laser crystals, including a housing, a transmission mechanism fixedly installed inside the housing, a CNC drive device fixedly installed outside the housing with its output shaft engaged inside the transmission mechanism, and support feet provided at the bottom of both sides of the housing. An inlet and an outlet are respectively connected to the interior of one side of the housing. Two symmetrically distributed outlet sealing covers are fixedly installed on the outer side of the housing away from the CNC drive device. Two symmetrically distributed end caps are movably fitted inside the outlet sealing covers and are fixedly fitted inside the transmission mechanism. A crystal located inside the transmission mechanism is engaged between the two end caps. A first static sealing gasket is fitted inside the outlet sealing cover and between the housing and the outlet sealing cover. A pressure-compensated rotary sealing ring is fixedly fitted to the outer side of the end cap and is movably fitted inside the outlet sealing cover. A second static sealing gasket is fitted between the end cap and the crystal. Coolant flow channels communicating with the inlet and outlet are provided inside the transmission mechanism, the outlet sealing cover, and the end caps, respectively. A vent is provided at the top of the housing, and a diversion port is provided at the bottom of the housing.

[0005] Preferably, the transmission mechanism includes a first gear, a second gear, and a gear shaft that are rotatably connected inside the housing from left to right, and a gear shaft that is engaged with the outside of the output shaft of the CNC drive device. A turntable is fixedly mounted on the outside of the end of the gear shaft away from the CNC drive device.

[0006] Preferably, the coolant flow channel includes a coolant diversion and pressure distribution channel and a coolant merging and pressure combining channel disposed inside the sealing cap and communicating with the inlet and outlet respectively, a guide channel disposed inside the end cap, and an inlet channel and an outlet channel disposed inside the first gear.

[0007] Preferably, both the coolant splitting and pressure dividing channels and the coolant merging and pressure combining channels are threaded with sealing plugs, and there are six inlet channels and six outlet channels, which are distributed in a ring at equal intervals.

[0008] Preferably, the end cap has six guide channels inside, and the six guide channels are distributed in a one-to-one correspondence with the liquid inlet channel and the liquid outlet channel.

[0009] Preferably, both the inlet and outlet of the liquid inlet are equipped with temperature difference and pressure difference measuring devices.

[0010] Beneficial effects:

[0011] 1. The CNC water-cooled rotating mechanism for laser crystals, through the coordinated use of the first gear, the second gear, and the gear shaft, enables the water-cooled rotating mechanism to drive the crystal to rotate under the drive of the CNC drive device. At the same time, different parts of the crystal emit lasers in sequence, and the heat can be forcibly removed from the crystal by the coolant around the crystal. The crystal is fully cooled in both time and space, thus solving the problem of laser crystal overheating and damage.

[0012] 2. This CNC water-cooled rotating mechanism for laser crystals enables the emission of huge or even extremely high-energy lasers from very small laser crystals, and the lasers are continuous. The crystals will not be damaged due to the huge laser energy. This has guiding significance for the miniaturization, economy and durability of laser crystals. Attached Figure Description

[0013] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the structure of the present invention;

[0015] Figure 2 This is a front view of the structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the coolant flow channel of the present invention;

[0017] Figure 4 This is a schematic diagram of the structure of the present invention;

[0018] Figure 5 This is a schematic diagram of the structure of the present invention;

[0019] Figure 6 This is a schematic diagram of the structure of the present invention.

[0020] In the diagram: 1. Housing; 2. Transmission mechanism; 21. First gear; 22. Second gear; 23. Gear shaft; 24. Turntable; 3. CNC drive device; 4. Support leg; 5. Liquid inlet; 6. Liquid outlet; 7. Sealing cap; 8. End cap; 9. Crystal; 10. First static sealing gasket; 11. Pressure-compensated rotary sealing ring; 12. Second static sealing gasket; 13. Coolant flow channel; 131. Coolant diversion and pressure dividing flow channel; 132. Coolant merging and pressure combining flow channel; 133. Guide channel; 134. Liquid inlet channel; 135. Liquid outlet channel; 14. Vent; 15. Diversion port. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0022] The accompanying drawings in this embodiment of the invention: The different types of cross-sectional lines in the drawings are not labeled according to national standards, nor do they specify the material requirements of the components. They are used to distinguish the cross-sectional views of the components in the drawings.

[0023] Please see Figure 1-6The laser crystal CNC water-cooled rotating mechanism includes a housing 1, a transmission mechanism 2 fixedly installed inside the housing 1, a CNC drive device 3 fixedly installed outside the housing 1 with its output shaft engaged inside the transmission mechanism 2, and support feet 4 located at the bottom of both sides of the housing 1. The CNC drive device 3 drives a gear-driven rotating body with a crystal 9 to rotate at an adjustable speed. The rotation of the crystal 9 causes different parts to act as gain media, generating laser light sequentially. This provides a buffer space for heat dissipation of the crystal and provides spatial support for the small crystal to generate a large-energy laser. An inlet 5 and an outlet 6 are respectively connected to the interior of one side of the housing 1. The inlet 5 and outlet 6 allow for coolant circulation within the water-cooled rotating mechanism via the coolant flow channel 13. Forced coolant direct contact with the crystal 9 removes heat, providing a buffer for cooling and bolstering market support for lasers that generate enormous energy from small crystals. Two symmetrically distributed outlet sealing covers 7 are fixedly installed on the outer side of the housing 1, away from the CNC drive device 3. Inside each outlet sealing cover 7 are two symmetrically distributed end covers 8, fixedly fitted inside the transmission mechanism 2. The crystal 9, located inside the transmission mechanism 2, is engaged between the two end covers 8. The inner side of end cap 7 is fitted with a first static sealing gasket 10 located between the housing 1 and the outlet sealing cover 7. The outer side of end cap 8 is fixedly fitted with a pressure-compensating rotary sealing ring 11 that is movably fitted onto the outlet sealing cover 7. The pressure-compensating rotary sealing ring 11 and end cap 8 achieve pressure-compensating rotary sealing and flow-diverting rotary sealing protection functions. A second static sealing gasket 12 is fitted between end cap 8 and crystal 9, serving both to seal the coolant and to drive and absorb shock, ensuring smooth operation of crystal 9. Through the combined use of the pressure-compensating rotary sealing ring 11, the second static sealing gasket 12, and the coolant flow channel 13, water cooling... The rotating mechanism forms a pressure-compensated rotary sealing mechanism, a flow-diverting rotary sealing protection mechanism, and a static and dynamic sealing combination and separation device, providing various protection measures between the coolant and the laser crystal to ensure the stability of the laser. The transmission mechanism 2, the outlet sealing cover 7, and the end cover 8 are provided with coolant flow channels 13 that are respectively connected to the inlet 5 and the outlet 6. The top of the box 1 is provided with a vent 14, which can ensure that the air pressure of the water-cooled rotating mechanism is the same as that of the outside air, so that excess coolant can be discharged and collected through the diversion port 15. The bottom of the box 1 is also provided with a diversion port 15.

[0024] The transmission mechanism 2 includes a first gear 21, a second gear 22, and a gear shaft 23 that are rotatably connected inside the housing 1 from left to right, and are engaged with the output shaft of the CNC drive device 3. A turntable 24 is fixedly mounted on the outer side of the end of the gear shaft 23 away from the CNC drive device 3. The gear shaft 23 can be manually rotated by the turntable 24, which facilitates engaging the output shaft of the CNC drive device 3 inside the gear shaft 23.

[0025] The coolant flow channel 13 includes a coolant diversion and pressure dividing flow channel 131 and a coolant merging and pressure combining flow channel 132 disposed inside the outlet sealing cap 7 and connected to the inlet 5 and outlet 6 respectively, a guide channel 133 disposed inside the end cap 8, and an inlet channel 134 and an outlet channel 135 disposed inside the first gear 21. The unique combination of diversion and pressure dividing flow channels and merging and pressure combining flow channels provides engineering support and provides a method for stable flow and stable pressure in crystal microstructures without thermal shock.

[0026] The coolant splitting and pressure dividing channel 131 and the coolant merging and pressure combining channel 132 are both threaded with sealing plugs. There are six inlet channels 134 and six outlet channels 135, and the six inlet channels 134 and outlet channels 135 are all distributed in a ring at equal intervals. The coolant is delivered to the crystal 9 around the crystal 9 through the coolant splitting and pressure dividing channel 131 and directly contacts the non-emitting surface of the crystal 9. After cooling the crystal 9, the coolant is collected and returned to the water tank through the coolant merging and pressure combining channel 132. At the same time, the coolant is protected from leakage by the pressure-compensated rotary sealing ring 11. The splitting rotary sealing protection mechanism ensures that even if leakage occurs, the crystal will not be damaged, thus achieving the rotary cooling of the laser crystal.

[0027] The end cap 8 has six guide channels 133 inside, and the six guide channels 133 are distributed one-to-one with the liquid inlet channel 134 and the liquid outlet channel 135. This structure ensures that the liquid inlet channel 134 and the liquid outlet channel 135 inside the first gear 21 are always connected to the guide channels 133 inside the end cap 8 during the rotation of the first gear 21. As a result, the coolant can be fully delivered to the surface of the crystal 9 for heat dissipation during the rotation of the crystal 9.

[0028] The inlet and outlet of liquid inlet 5 and liquid outlet 6 are equipped with temperature difference and pressure difference measuring devices, which can quantitatively measure heat capacity and crystal cooling rate.

[0029] When the water-cooled rotating mechanism is working, the CNC drive device 3 is activated and the inlet 5 and outlet 6 are connected. The CNC drive device 3 drives the first gear 21 to rotate synchronously with the crystal 9 through the gear shaft 23 and the second gear 22. The speed of the CNC drive device 3 is stable and can be infinitely adjusted. At the same time, the coolant enters the coolant diversion and pressure distribution channel 131 through the inlet 5, and is transported to the surface of the crystal 9 through the guide channel 133 and the inlet channel 134. Through special diversion, the flow rate and pressure are stabilized, and there will be no thermal shock to the crystal 9. The coolant surrounding the crystal 9 forces the crystal 9 to cool down stably as required, and removes heat. As the coolant is continuously transported, the excess coolant enters the outlet channel 135, flows into the interior of the support leg 4 through the guide channel 133 and the coolant merging and pressure distribution channel 132, and flows back to the coolant return tank through the support leg 4. The contents not described in detail in this description are existing technologies known to those skilled in the art.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A CNC water-cooled rotating mechanism for a laser crystal, comprising a housing (1), a transmission mechanism (2) installed inside the housing (1), a CNC drive device (3) installed outside the housing (1) with its output shaft engaged inside the transmission mechanism (2), and support legs (4) located at the bottom of both sides of the housing (1), characterized in that: The inside of one side of the housing (1) is connected to an inlet (5) and an outlet (6). Two symmetrically distributed outlet sealing covers (7) are installed on the outside of the housing (1) away from the CNC drive device (3). Inside the outlet sealing cover (7) are two symmetrically distributed end caps (8) fitted inside the transmission mechanism (2). A crystal (9) located inside the transmission mechanism (2) is snapped between the two end caps (8). A first static sealing gasket (10) is fitted inside the outlet sealing cover (7) and located between the housing (1) and the outlet sealing cover (7). A pressure-compensated rotary sealing ring (11) fitted on the outside of the end cap (8) is fitted on the outlet sealing cover (7). A second static sealing gasket (12) is fitted between the end cap (8) and the crystal (9). The inside of the transmission mechanism (2), the outlet sealing cover (7) and the end cap (8) is provided with a connection to the inlet (5) and the outlet (6) respectively. 6) A coolant flow channel (13) is connected between the two. A vent (14) is provided on the top of the box (1), and a diversion port (15) is provided on the bottom of the box (1). The transmission mechanism (2) includes a first gear (21), a second gear (22) and a gear shaft (23) that are connected to the inside of the box (1) from left to right. A turntable (24) is fitted on the outside of the end of the gear shaft (23) away from the CNC drive device (3). The coolant flow channel (13) includes a coolant diversion and pressure dividing flow channel (131) and a coolant merging and pressure combining flow channel (132) that are provided inside the sealing cover (7) and communicate with the inlet (5) and the outlet (6) respectively, a guide channel (133) provided inside the end cover (8), and an inlet channel (134) and an outlet channel (135) provided inside the first gear (21).

2. The laser crystal CNC water-cooled rotating mechanism according to claim 1, characterized in that: The coolant splitting and pressure dividing channel (131) and the coolant merging and pressure combining channel (132) are both threaded with sealing plugs. There are six inlet channels (134) and six outlet channels (135), and the six inlet channels (134) and six outlet channels (135) are all distributed in a ring at equal intervals.

3. The CNC water-cooled rotating mechanism for laser crystals according to claim 1, characterized in that: The end cap (8) has six guide channels (133) inside, and the six guide channels (133) are distributed one-to-one with the liquid inlet channel (134) and the liquid outlet channel (135).

4. The CNC water-cooled rotating mechanism for laser crystals according to claim 1, characterized in that: Both the inlet (5) and outlet (6) are equipped with temperature difference and pressure difference measuring devices.

Citation Information

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