Laser and laser therapy device

Abstract

The utility model discloses a kind of laser and laser therapeutic instrument, it is related to laser treatment technical field, the laser includes pump source, optical path module, drying module and refrigeration module, the optical path module is connected in the pump source, for receiving the pump light generated by the pump source and form laser;The drying module includes drying cabinet and drying pipeline, the drying pipeline is communicated the drying cabinet and the optical path module, drying agent is equipped in the drying cabinet, for drying the optical path module;The refrigeration module is equipped with refrigeration side and heat dissipation side, the refrigeration side is towards the pump source arrangement, for the cooling of the pump source, the heat dissipation side is towards the drying cabinet arrangement, for drying the drying agent.The technical scheme provided by the utility model aims at realizing the miniaturization of laser pump source heat dissipation structure, while ensuring that the humidity of optical structure after long time use can also be maintained in appropriate range.

Description

Technical Field

[0001] This utility model relates to the field of laser therapy technology, and in particular to a laser and a laser therapy device. Background Technology

[0002] Currently, lasers used in laser therapy employ water cooling to dissipate heat from the laser pump source. This requires a water cooling system consisting of a water tank, water pump, and heat exchanger, making the entire device large and heavy. Not only is there a risk of water spillage during transportation, potentially causing short circuits in the electrical control system, but prolonged use can also lead to increased internal humidity in the laser, affecting the lifespan of the optical structures in the optical path and the accuracy of the laser. Utility Model Content

[0003] The main purpose of this invention is to propose a laser and a laser therapy device, which aims to miniaturize the heat dissipation structure of the laser pump source while ensuring that the humidity of the optical structure can be maintained within a suitable range after long-term use.

[0004] To achieve the above objectives, this utility model proposes a laser, the laser comprising: Pump source; An optical path module, connected to the pump source, is used to receive pump light generated by the pump source and form laser light; A drying module, comprising a drying chamber and a drying pipeline, the drying pipeline connecting the drying chamber and the optical path module, wherein the drying chamber contains a desiccant for drying the optical path module; and The refrigeration module has a refrigeration side and a heat dissipation side. The refrigeration side is arranged facing the pump source and is used to cool the pump source. The heat dissipation side is arranged facing the drying chamber and is used to dry the desiccant.

[0005] In one embodiment, the refrigeration module includes a semiconductor refrigeration element, a heat sink, and a cooling fan. The semiconductor refrigeration element has a cold side and a hot side. The side of the semiconductor refrigeration element with the cold side forms the refrigeration side. The heat sink is connected to the hot side. The cooling fan is disposed between the heat sink and the drying chamber. The side of the cooling fan away from the heat sink forms the heat dissipation side. The cooling fan is used to blow a cooling airflow into the drying chamber to dry the desiccant.

[0006] In one embodiment, the refrigeration module further includes a mounting plate and a temperature sensing element. The temperature sensing element is disposed on the mounting plate, which is connected to the pump source and attached to the cold surface. The temperature sensing element is used to detect the temperature of the pump source.

[0007] In one embodiment, the drying module further includes an air pump and a filter, and the drying pipeline includes multiple sections, which are sequentially connected to the optical path module, the air pump, the filter, the drying chamber, and the optical path module to form an airflow loop; The optical path module is connected to the output end of the air pump, and the filter is connected to the input end of the air pump.

[0008] In one embodiment, the drying module further includes a first quick connector and a second quick connector, which are connected to and communicate with the drying chamber, and are used to connect the drying pipeline.

[0009] In one embodiment, the drying module further includes a first one-way valve, which is located between the optical path module and the air pump and connected to the drying pipeline. The first one-way valve is configured to allow airflow in the airflow circuit to flow from the output end of the air pump to the optical path module. And / or, the drying module further includes a second one-way valve, which is located between the drying chamber and the optical path module and connected to the drying pipeline. The second one-way valve is configured to allow airflow in the airflow circuit to flow from the optical path module to the drying chamber.

[0010] In one embodiment, the optical path module includes an optical path box, a humidity detection device, and an optical path assembly. The optical path box has a cavity, and the humidity detection device and the optical path assembly are disposed in the cavity. The humidity detection device is used to detect the temperature and humidity in the cavity. The drying pipeline is connected to the optical path box and connected to the cavity.

[0011] In one embodiment, the optical path module further includes an electronic pressure balancing valve, which is connected to the optical path box and connected to the cavity. The electronic pressure balancing valve is used to detect the air pressure inside the cavity and open or close according to the detection result to maintain the balance of air pressure inside and outside the cavity.

[0012] In one embodiment, the optical path box is provided with an air inlet and an air outlet. The optical path module further includes a third quick connector and a fourth quick connector, which are respectively connected to the air inlet and the air outlet and are located outside the cavity. The third quick connector and the fourth quick connector are used to connect to the drying pipeline.

[0013] This utility model also proposes a laser therapy device, which includes a treatment handpiece and a laser as described above.

[0014] The technical solution of this utility model separates the pump source and the optical path module. The desiccant in the drying chamber of the drying module absorbs the moisture in the optical path module to maintain the humidity of the optical path module within a suitable range. The cooling side of the cooling module dissipates heat to the pump source to reduce the operating temperature of the pump source. At the same time, the drying chamber is set on the heat dissipation side of the cooling module. The heat generated by the cooling module during cooling dries the desiccant in the drying chamber, so that the desiccant can be used for a long time. This ingenious use of the heat dissipation side of the cooling module to heat and dry the desiccant avoids the need for additional heating elements to heat and dry the desiccant. It not only achieves miniaturization of the heat dissipation structure, but also ensures that the humidity of the optical path module is maintained within a suitable range. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the laser structure in one embodiment of this utility model; Figure 2 A top view of the laser structure in one embodiment of this utility model; Figure 3 An exploded view of the optical path module in one embodiment of this utility model; Figure 4 This is a schematic diagram of the structure of the refrigeration module in one embodiment of the present invention.

[0017] Explanation of icon numbers: 100. Laser; 1. Pump source; 2. Optical path module; 21. Optical path box; 211. Cavity; 212. Air inlet; 213. Air outlet; 22. Humidity detection device; 23. Electronic pressure balance valve; 24. Third quick connector; 25. Fourth quick connector; 26. First vent valve; 27. Second vent valve; 3. Drying module; 31. Drying oven; 32. Drying pipeline; 33. Air pump; 34. Filter; 35. First quick connector; 36. Second quick connector; 37. First one-way valve; 38. Second one-way valve; 4. Cooling module; 41. Semiconductor cooling device; 411. Cold side; 412. Hot side; 42. Heat sink; 43. Cooling fan; 44. Mounting plate; 45. Temperature detection device; 46. Cooling side; 47. Heat dissipation side; 5. Optical fiber; The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0019] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0020] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0021] Please refer to the reference. Figures 1 to 4 As shown, this utility model proposes a laser 100, which includes a pump source 1, an optical path module 2, a drying module 3, and a cooling module 4. The optical path module 2 is connected to the pump source 1 and is used to receive the pump light generated by the pump source 1 and form a laser. The drying module 3 includes a drying chamber 31 and a drying pipeline 32. The drying pipeline 32 connects the drying chamber 31 and the optical path module 2. The drying chamber 31 contains a desiccant for drying the optical path module 2. The cooling module 4 has a cooling side 46 and a heat dissipation side 47. The cooling side 46 is set towards the pump source 1 and is used to cool the pump source 1. The heat dissipation side 47 is set towards the drying chamber 31 and is used to dry the desiccant.

[0022] In this embodiment, pump source 1 serves as the light source for laser 100, generating pump light. Pump source 1 can be directly connected to or coupled to optical path module 2 via optical fiber 5. Optical path module 2 receives the pump light generated by pump source 1 and forms laser light. Drying module 3 is used to dry optical path module 2, not only preventing moisture from affecting the normal transmission of the beam by the optical module, but also extending the service life of optical path module 2. Drying module 3 includes drying chamber 31 and drying pipeline 32. Drying chamber 31 is connected to optical path module 2 through drying pipeline 32, and can continuously receive humid gas from optical path module 2. The desiccant in drying chamber 31 can continuously adsorb moisture from the humid gas, thereby maintaining a low humidity environment inside optical path module 2. Cooling module 4 is used to cool pump source 1. Pump source 1 is located on the cooling side 46 of cooling module 4 to prevent the operating temperature of pump source 1 from being too high, which would be detrimental to the continuous operation of laser 100. Understandably, the cooling module 4 also emits heat during the cooling process. The drying chamber 31 is located on the heat dissipation side 47 of the cooling module 4. Thus, the heat emitted by the cooling module 4 can dry the desiccant inside the drying chamber 31, allowing the desiccant to be used for a long time. The cooling module 4 simultaneously performs the dual functions of cooling the pump source 1 and heating the drying chamber 31. This eliminates the need for an additional independent heating element for the drying chamber 31, simplifying the structure of the laser 100 and reducing manufacturing costs. Furthermore, since no additional heating element or heat dissipation structure is required, the direct thermal integration of the heat dissipation side 47 of the cooling module 4 and the drying chamber 31 makes the overall heat dissipation structure more compact, achieving miniaturization of the heat dissipation structure. It also ensures the long-term effectiveness of the desiccant, maintaining the humidity of the optical path module 2 within a suitable range, preventing condensation or contamination of optical components due to excessive humidity, thereby ensuring the long-term stable operation of the laser 100. In some embodiments, the pump source 1 can be a xenon lamp; in some embodiments, the pump source 1 can be a semiconductor laser, and the laser light generated by the semiconductor laser is used as the pump light received by the optical path module 2.

[0023] It is understandable that the optical path module 2 contains optical components, such as added medium, reflector, optical filter, optical parametric oscillator, etc., to generate laser using pump light and adjust the relevant parameters of the laser. However, the optical components inside the optical path module 2 are not related to the technical solution of this application, and therefore are not shown in the accompanying drawings.

[0024] The light-emitting surface of pump source 1 and the light-input end of optical path module 2 are aligned along the optical axis. The two can be connected by direct docking or by coupling via optical fiber 5. Pump source 1 and optical path module 2 are coupled via optical fiber 5, so pump source 1 and optical path module 2 can be installed separately, so that optical path module 2 will not be affected by the heat of pump source 1, which would cause instability in operation.

[0025] The heat generated by the pump source 1 during operation is transferred to the cooling side 46 of the cooling module 4 through heat conduction, thereby cooling the pump source 1. The heat generated by the cooling module 4 during operation is dissipated from the heat dissipation side 47 to the drying chamber 31, causing the temperature inside the drying chamber 31 to rise. When the temperature rises to the regeneration temperature of the desiccant, the moisture adsorbed by the desiccant is released, thereby achieving the drying and regeneration of the desiccant.

[0026] In embodiments of this utility model, such as Figure 2 and Figure 4 As shown, the refrigeration module 4 includes a semiconductor refrigeration component 41, a heat sink 42, and a cooling fan 43. The semiconductor refrigeration component 41 has a cold surface 411 and a hot surface 412. The side of the semiconductor refrigeration component 41 with the cold surface 411 forms a refrigeration side 46. The heat sink 42 is connected to the hot surface 412. The cooling fan 43 is located between the heat sink 42 and the drying chamber 31. The side of the cooling fan 43 away from the heat sink 42 forms a cooling side 47. The cooling fan 43 is used to blow cooling airflow into the drying chamber 31 to dry the desiccant.

[0027] In this embodiment, the pump source 1 located on the cooling side 46 is directly connected to the cold surface 411 of the semiconductor cooler 41, so that the semiconductor cooler 41 absorbs heat from the pump source 1 and cools down. The heat sink 42 is connected to the hot surface 412 of the semiconductor cooler 41 and receives the heat dissipated by the semiconductor cooler 41, increasing the heat dissipation area and improving the heat dissipation effect of the semiconductor cooler 41. The cooling fan 43 is located between the heat sink 42 and the drying chamber 31, with its side away from the heat sink 42 forming a heat dissipation side 47 facing the drying chamber 31, for blowing cooling airflow into the drying chamber 31. This further enhances the heat dissipation effect of the semiconductor cooler 41 and can also dry the desiccant in the drying chamber 31.

[0028] It should be noted that the semiconductor cooling device 41, also known as a TEC (Thermoelectric Cooler) cooler, typically uses P-type and N-type semiconductors as a thermocouple pair. It works based on the Peltier effect. When a direct current passes through a thermocouple composed of two different semiconductor materials, one end absorbs heat and the other end releases heat, thereby achieving a cooling effect.

[0029] Understandably, when the semiconductor cooling device 41 is running, the heat emitted by the hot surface 412 is diffused through the heat sink 42; the cooling fan 43 draws in the air flowing through the heat sink 42 and blows it onto the drying chamber 31, heating the desiccant in the drying chamber 31, causing the desiccant to release moisture, and realizing the drying and regeneration of the desiccant.

[0030] In practical implementation, the drying chamber 31 has an air inlet opposite to the cooling fan 43 and an air outlet away from the cooling fan 43. Both the air inlet and the air outlet are connected to the internal cavity of the drying chamber 31, where the desiccant is placed. The cooling airflow blown by the cooling fan 43 enters the drying chamber 31 through the air inlet and then blows the gas containing moisture out through the air outlet, thus drying the desiccant. The number of cooling fans 43 can be set to 1, 2, 3, etc. When multiple cooling fans 43 are used, they can be arranged in parallel between the radiator 42 and the drying chamber 31. The cooling fan 43 can be connected to both the radiator 42 and the drying chamber 31 simultaneously with bolts. The radiator 42 has multiple heat dissipation fins, and thermally conductive adhesive can be filled between the radiator 42 and the hot surface 412.

[0031] In embodiments of this utility model, such as Figure 4 As shown, the refrigeration module 4 also includes a mounting plate 44 and a temperature detection element 45. The temperature detection element 45 is disposed on the mounting plate 44, which is connected to the pump source 1 and attached to the cold surface 411. The temperature detection element 45 is used to detect the temperature of the pump source 1.

[0032] In this embodiment, the mounting plate 44 is a flat plate structure. One side of the mounting plate 44 is attached to the pump source 1, and the other side is attached to the cold surface 411 of the semiconductor cooling component 41. The mounting plate 44 is made of aluminum alloy or copper alloy, which combines certain mechanical strength with good thermal conductivity. It provides rigid support for the pump source 1 and also serves as a heat conduction interface to efficiently transfer heat from the pump source 1 to the cold surface 411. At the same time, the mounting plate 44 allows the cooling module 4 to be assembled with different models of pump sources 1, improving the compatibility of the cooling module 4. A temperature detection element 45 is disposed on the surface of the mounting plate 44, forming thermal contact with the mounting plate 44, and is used to detect the temperature of the pump source 1.

[0033] In practical implementation, the mounting plate 44 is fastened to the pump source 1 with screws. Thermal grease is applied between the mounting plate 44 and the cold surface 411, or a thermal pad is installed to reduce thermal resistance and improve the heat dissipation effect of the semiconductor heat sink on the pump source 1. Optionally, the temperature sensing element 45 is embedded in pre-drilled holes in the mounting plate 44 or attached to the surface of the mounting plate 44 to monitor the temperature of the pump source 1 in real time. The control system can adjust the cooling power of the semiconductor cooling element 41 according to the monitored temperature of the temperature sensing element 45 to achieve closed-loop temperature control.

[0034] In embodiments of this utility model, such as Figures 1 to 3 As shown, the drying module 3 also includes an air pump 33 and a filter 34. The drying pipeline 32 includes multiple sections, which are sequentially connected to the optical path module 2, the air pump 33, the filter 34, the drying chamber 31, and the optical path module 2 to form an airflow loop. The optical path module 2 is connected to the output end of the air pump 33, and the filter 34 is connected to the input end of the air pump 33.

[0035] In this embodiment, multiple drying pipes 32 are sequentially connected to the optical path module 2, the air pump 33, the filter element 34, the drying chamber 31, and the optical path module 2 to form a closed airflow loop. Specifically, the optical path module 2 is connected to the input of the air pump 33 via a pipe; the output of the air pump 33 is connected to the inlet of the filter element 34 via the drying pipes 32; the outlet of the filter element 34 is connected to the drying chamber 31 via the drying pipes 32; and the drying chamber 31 is then connected to the optical path module 2 via the drying pipes 32. The air pump 33 is connected to the loop via the drying pipes 32, its output is connected to the optical path module 2, and its input is connected to the filter element 34, used to drive the gas to circulate in the loop. The filter element 34 is connected to the input of the air pump 33 and contains filter material to remove particulate impurities from the airflow, preventing contamination of the optical path components. Optionally, the filter element 34 can be activated carbon or a molecular sieve.

[0036] In actual implementation, the air pump 33 operates, drawing humid gas from the optical path module 2. The gas passes through the drying pipeline 32 and enters the filter element 34 to remove impurities. It then enters the drying chamber 31 where the desiccant absorbs moisture. Finally, the dried gas returns to the optical path module 2, forming a continuous cycle, thereby maintaining the humidity within the optical path module 2 within a suitable range. The air pump 33 pumps a circulating airflow through the filter element 34, the drying chamber 31, and the optical path module 2, increasing the airflow circulation speed and ensuring drying efficiency. The filter element 34 prevents impurities from entering the air pump 33 and the drying chamber 31, avoiding blockage and contamination.

[0037] In embodiments of this utility model, such as Figures 1 to 2 As shown, the drying module 3 also includes a first quick connector 35 and a second quick connector 36, which are connected to and communicate with the drying chamber 31. The first quick connector 35 and the second quick connector 36 are used to connect the drying pipeline 32.

[0038] In this embodiment, both the first quick connector 35 and the second quick connector 36 are sealed to the side wall of the drying chamber 31, with their inner ends directly communicating with the internal cavity of the drying chamber 31, and their outer ends having standard interfaces for detachable connection to the drying pipeline 32. Optionally, the first quick connector 35 and the second quick connector 36 can adopt a threaded or snap-fit ​​structure, achieving an airtight connection with the drying chamber 31 by tightening with a sealing ring. The drying pipeline 32 can be connected to the outer interfaces of the first quick connector 35 and the second quick connector 36, and an air passage between the drying pipeline 32 and the drying chamber 31 can be quickly established by screwing or snapping. This enables quick assembly and disassembly of the drying pipeline 32 and the drying chamber 31, facilitating maintenance or replacement; at the same time, the standardized interface design improves the module's versatility, allowing for adaptation to different lengths of drying pipeline 32 according to different models, thus enhancing the flexibility of the drying module 3.

[0039] In embodiments of this utility model, such as Figures 1 to 2 As shown, the drying module 3 also includes a first one-way valve 37, which is located between the optical path module 2 and the air pump 33 and connected to the drying pipeline 32. The first one-way valve 37 is configured to allow the airflow in the airflow circuit to flow from the output end of the air pump 33 to the optical path module 2.

[0040] In this embodiment, the first one-way valve 37 is configured to allow airflow from the output of the air pump 33 to the optical path module 2, and to cut off the flow in the opposite direction. When the air pump 33 is running, the pumped gas can overcome the opening pressure of the one-way valve and enter the optical path module 2 through the first one-way valve 37. When the air pump 33 stops or the circuit pressure is abnormal, causing the airflow to reverse, the valve core of the first one-way valve 37 automatically closes, blocking the backflow of airflow to the air pump 33. This prevents gas or contaminants in the optical path module 2 from flowing back to the air pump 33 when the air pump 33 stops, protecting the air pump 33 from moisture or impurities and extending its service life. At the same time, it maintains stable airflow circuit pressure, ensuring one-way circulation of the drying gas and guaranteeing the operational reliability of the drying module 3.

[0041] Optionally, the drying module 3 also includes a second one-way valve 38, which is located between the drying chamber 31 and the optical path module 2 and connected to the drying pipeline 32. The second one-way valve 38 is configured to allow airflow in the airflow loop to flow from the optical path module 2 to the drying chamber 31. When the air pump 33 is running, the airflow begins to circulate. The gas pressure discharged from the optical path module 2 pushes the valve core of the second one-way valve 38 to open, allowing the airflow to smoothly enter the drying chamber 31 for drying. When the air pump 33 stops or the loop pressure fluctuates, causing the airflow to flow back from the drying chamber 31 to the optical path module 2, the valve core of the second one-way valve 38 automatically closes, blocking the reverse airflow and preventing gas or desiccant dust that may fall off from the drying chamber 31 from flowing back to the optical path module 2 under abnormal pressure, thus avoiding contamination of the optical components. The second one-way valve 38 works in conjunction with the first one-way valve 37 to ensure that the entire airflow loop direction is unique and stable, improving the operational reliability of the drying module 3.

[0042] Optionally, the first check valve 37 and the second check valve 38 are connected to the drying pipeline 32 by means of threads or quick-connect. The first check valve 37 and the second check valve 38 are spring-type or diaphragm-type check valves, and the valve bodies are provided with standard pipeline interfaces at both ends to facilitate connection to the drying pipeline 32.

[0043] In embodiments of this utility model, such as Figures 1 to 3 As shown, the optical path module 2 includes an optical path box 21, a humidity detection element 22, and an optical path assembly. The optical path box 21 has a cavity 211. The humidity detection element 22 and the optical path assembly are located inside the cavity 211. The humidity detection element 22 is used to detect the temperature and humidity inside the cavity 211. The drying pipeline 32 is connected to the optical path box 21 and connected to the cavity 211.

[0044] In this embodiment, the optical path assembly and temperature detection element 45 are located within the cavity 211 of the optical path box 21. The optical path assembly is used to generate laser light or process the laser light to change its relevant parameters (not shown in the accompanying drawings). The optical path box 21 provides mechanical support and sealing protection for the optical path assembly, isolating it from external contamination. The temperature detection element 45 is used to detect the humidity within the cavity 211 in real time. The humidity detection element 22 continuously monitors the humidity of the cavity 211 and feeds the humidity of the cavity 211 back to the control system. When the humidity exceeds a threshold, the control system activates the drying module 3 to dehumidify the cavity 211 of the optical path box 21. When the humidity is within a preset range, the control system controls the drying module 3 to stop dehumidifying.

[0045] In actual implementation, the drying gas flows into the cavity 211 through the drying pipe 32, passes through the optical path components, and then returns to the drying chamber 31 from the drying pipe 32, forming a cycle of dehumidification. This quickly reduces the humidity in the cavity 211, prevents condensation or contamination of the optical path components, and ensures the stable operation of the laser 100.

[0046] In embodiments of this utility model, such as Figures 1 to 3 As shown, the optical path module 2 also includes an electronic pressure balancing valve 23. The electronic pressure balancing valve 23 is connected to the optical path box 21 and connected to the cavity 211. The electronic pressure balancing valve 23 is used to detect the air pressure inside the cavity 211 and open or close according to the detection result to maintain the balance of air pressure inside and outside the cavity 211.

[0047] In this embodiment, the electronic pressure balancing valve 23 is an integrated component combining a pressure sensor and a solenoid valve. The electronic pressure balancing valve 23 is connected to the side wall of the optical path box 21 via threads or a flange and communicates with the interior of the cavity 211. The electronic pressure balancing valve 23 detects the air pressure inside the cavity 211 in real time and automatically opens and closes according to a preset air pressure threshold. When the air pressure inside the cavity 211 is higher or lower than the external pressure, the electronic pressure balancing valve 23 opens, connecting the outside and the cavity 211. After the air pressure inside and outside the cavity 211 is balanced, the electronic pressure balancing valve 23 closes.

[0048] Understandably, after the drying module 3 dehumidifies the cavity 211, the gas flow within the cavity 211 may cause pressure fluctuations. The electronic pressure balancing valve 23 monitors the pressure in real time. If the pressure difference between the inside and outside of the cavity 211 exceeds a set value, the valve automatically opens, allowing the cavity 211 to briefly connect with the outside for pressure balancing. After balancing, the valve quickly closes. This maintains the pressure balance between the inside and outside of the cavity 211, preventing seal failure due to excessive positive pressure or backflow of external moisture due to negative pressure, avoiding damage to optical components, and improving the environmental stability and operational safety of the optical path module 2.

[0049] In embodiments of this utility model, such as Figure 3As shown, the optical path box 21 is provided with an air inlet 212 and an air outlet 213. The optical path module 2 also includes a third quick connector 24 and a fourth quick connector 25. The third quick connector 24 and the fourth quick connector 25 are respectively connected to the air inlet 212 and the air outlet 213 and are located outside the cavity 211. The third quick connector 24 and the fourth quick connector 25 are used to connect the drying pipeline 32.

[0050] In this embodiment, the side wall of the optical path box 21 is provided with an air inlet 212 and an air outlet 213, both of which are in communication with the interior of the cavity 211. The third quick connector 24 and the fourth quick connector 25 are respectively sealed and connected to the outer ends of the air inlet 212 and the air outlet 213. The third quick connector 24 and the fourth quick connector 25 are located outside the cavity 211, with their interface ends facing outwards for easy pipe connection.

[0051] In actual implementation, both ends of the drying pipeline 32 are connected to the third quick connector 24 and the fourth quick connector 25 via quick-clamping or threaded connection to form an airtight connection. When maintenance or replacement of the optical path module 2 is required, the pipeline connection can be quickly disconnected by reversing the operation. The third quick connector 24 and the fourth quick connector 25 enable quick assembly and disassembly of the drying pipeline 32 and the optical path box 21, improving assembly efficiency. The layout of the third quick connector 24 and the fourth quick connector 25 outside the cavity 211 facilitates operation, avoids working in confined spaces, and enhances maintenance convenience and module versatility.

[0052] Optionally, such as Figures 1 to 3 As shown, the optical path module 2 also includes a first vent valve 26 and a second vent valve 27, which respectively cover the air inlet 212 and the air outlet 213 and are located in the cavity 211.

[0053] In this embodiment, the first vent valve 26 and the second vent valve 27 are waterproof and breathable membranes or microporous liquid-blocking valves, which are fixed to the inner ports of the air inlet 212 and the air outlet 213 respectively by means of a pressure ring or adhesive bonding, located inside the cavity 211 and completely covering the two ports. It is understood that the first vent valve 26 and the second vent valve 27 allow gas molecules to pass through in both directions, but block the passage of liquid or particulate contaminants.

[0054] In actual implementation, when the drying gas enters through the air inlet 212, it passes through the first vent valve 26 and then enters the cavity 211 to prevent liquid or particulate contaminants from entering the cavity 211 and affecting the normal operation of the optical path module 2. The second vent valve 27 at the air outlet 213 can prevent liquid or particulate contaminants in the drying pipeline 32 from flowing back into the cavity 211, protecting the optical path components in the cavity 211 from contamination and corrosion.

[0055] This utility model also proposes a laser therapy device, which includes a treatment handpiece and a laser 100. The laser 100 emits a laser beam, which is guided to the area to be treated via the treatment handpiece, for treating the designated area. The specific structure of the laser 100 is as described in the above embodiments. Since this laser therapy device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0056] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A laser, characterized in that, The laser includes: Pump source; An optical path module, connected to the pump source, is used to receive pump light generated by the pump source and form laser light; A drying module, comprising a drying chamber and a drying pipeline, the drying pipeline connecting the drying chamber and the optical path module, wherein the drying chamber contains a desiccant for drying the optical path module; and The refrigeration module has a refrigeration side and a heat dissipation side. The refrigeration side is arranged facing the pump source and is used to cool the pump source. The heat dissipation side is arranged facing the drying chamber and is used to dry the desiccant.

2. The laser as described in claim 1, characterized in that, The refrigeration module includes a semiconductor refrigeration element, a heat sink, and a cooling fan. The semiconductor refrigeration element has a cold side and a hot side. The side of the semiconductor refrigeration element with the cold side forms the refrigeration side. The heat sink is connected to the hot side. The cooling fan is located between the heat sink and the drying chamber. The side of the cooling fan away from the heat sink forms the heat dissipation side. The cooling fan is used to blow a cooling airflow into the drying chamber to dry the desiccant.

3. The laser as described in claim 2, characterized in that, The refrigeration module also includes a mounting plate and a temperature detection element. The temperature detection element is disposed on the mounting plate, which is connected to the pump source and attached to the cold surface. The temperature detection element is used to detect the temperature of the pump source.

4. The laser as described in any one of claims 1 to 3, characterized in that, The drying module also includes an air pump and a filter. The drying pipeline includes multiple sections, which are sequentially connected to the optical path module, the air pump, the filter, the drying chamber, and the optical path module to form an airflow loop. The optical path module is connected to the output end of the air pump, and the filter is connected to the input end of the air pump.

5. The laser as described in claim 4, characterized in that, The drying module further includes a first quick connector and a second quick connector, which are connected to and communicate with the drying chamber. The first quick connector and the second quick connector are used to connect the drying pipeline.

6. The laser as described in claim 4, characterized in that, The drying module further includes a first one-way valve, which is located between the optical path module and the air pump and connected to the drying pipeline. The first one-way valve is configured to allow the airflow in the airflow circuit to flow from the output end of the air pump to the optical path module. And / or, the drying module further includes a second one-way valve, which is located between the drying chamber and the optical path module and connected to the drying pipeline. The second one-way valve is configured to allow airflow in the airflow circuit to flow from the optical path module to the drying chamber.

7. The laser as claimed in claim 4, characterized in that, The optical path module includes an optical path box, a humidity detection device, and an optical path assembly. The optical path box has a cavity, and the humidity detection device and the optical path assembly are located inside the cavity. The humidity detection device is used to detect the temperature and humidity inside the cavity. The drying pipeline is connected to the optical path box and enters the cavity.

8. The laser as claimed in claim 7, characterized in that, The optical path module also includes an electronic pressure balancing valve, which is connected to the optical path box and connected to the cavity. The electronic pressure balancing valve is used to detect the air pressure inside the cavity and open or close according to the detection result to maintain the balance of air pressure inside and outside the cavity.

9. The laser as claimed in claim 7, characterized in that, The optical path box is equipped with an air inlet and an air outlet. The optical path module further includes a third quick connector and a fourth quick connector, which are respectively connected to the air inlet and the air outlet and are located outside the cavity. The third quick connector and the fourth quick connector are used to connect to the drying pipeline.

10. A laser therapy device, characterized in that, The laser therapy device includes a treatment handpiece and a laser as described in any one of claims 1 to 9.

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