Safe high-heat-dissipation type engineering explosion-proof lamp

Abstract

The invention belongs to the technical field of illumination, and discloses a safe strong heat dissipation type engineering explosion-proof lamp which comprises an explosion-proof shell, an inner containing cavity of the explosion-proof shell, a light source module, a phase change heat dissipation system, a flow guide assembly and a light beam regulation and control structure. The phase change heat dissipation system is composed of a phase change heat storage unit and a heat conduction structure surrounding the light source. And the flow guide assembly converts the internal pressure change of the phase change unit into space orientation adjustment of the flow guide blades through the driving mechanism. The light beam regulation and control structure comprises a thermal response material layer and a prism array, when the temperature T4 of the heat conduction structure exceeds the deformation temperature T1 of the thermal response material layer, the thermal response material layer shrinks to enable the prism array to deform, and the light beam is converted into a scattering state from a focusing state. The phase change heat transfer, intelligent flow guide and optical regulation and control technologies are fused, and the system has the advantages of efficient heat dissipation, quick response, safety, reliability and the like and is particularly suitable for flammable and explosive environments, and passive trigger design is T2lt; t1lt; intelligent protection is achieved in the T3 interval, and stability and service life of the lamp are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of lighting, and relates to an explosion-proof lamp for engineering, and particularly to a safe and strong heat-dissipating engineering explosion-proof lamp. Background Art

[0002] An explosion-proof lamp refers to a lamp used in dangerous places where flammable gases and dust exist, which can prevent electric arcs, sparks and high temperatures that may be generated inside the lamp from igniting flammable gases and dust in the surrounding environment, so as to meet the explosion-proof requirements. Based on the application characteristics of explosion-proof lamps, they are often used in special fields such as public security, fire protection, military, electric power, railway, petroleum, and chemical industry.

[0003] However, due to the relatively complex working environment, in common usage places, such as mines, flour mills, etc., traditional lamps mostly rely on passive heat dissipation (such as metal fins) or forced air cooling, and it is difficult to quickly conduct the heat generated by a high heat flux density light source in a closed explosion-proof environment, which easily leads to overheating of the light source module and shortens the service life. Moreover, its heat dissipation system cannot adjust the heat dissipation capacity in real time according to temperature changes. For example, the flow guiding structure of air-cooled lamps is fixed and it is difficult to match the heat dissipation requirements under different working conditions. The beam regulation of existing explosion-proof lamps mostly relies on mechanical switches or electronic sensors, with a response delay in case of high-temperature failures, and lacks a physical-level thermal-triggered scattering mechanism, there is a risk of beam focusing intensifying local overheating. Therefore, traditional explosion-proof lamps lack linkage in functional modules such as heat dissipation, explosion protection, and light control, and the collaborative efficiency is relatively low. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: aiming at the above-mentioned defects existing in the prior art, to provide a safe and strong heat-dissipating engineering explosion-proof lamp.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A safe and strong heat-dissipating engineering explosion-proof lamp, comprising: an explosion-proof housing, which forms an accommodation cavity inside;

[0007] A light source module, arranged in the accommodation cavity;

[0008] A phase change heat dissipation system, including a phase change heat storage unit arranged in the explosion-proof housing and a heat conduction structure arranged around the light source module. Among them, a gas-liquid phase change working medium is encapsulated in the phase change heat storage unit and forms a heat circulation loop with the heat conduction structure, and the phase change heat storage unit transfers the heat of the light source module to the outside of the explosion-proof housing through gas-liquid phase change;

[0009] A flow guiding assembly, including flow guiding vanes arranged outside the explosion-proof housing and a driving mechanism connected to the phase change heat storage unit. Among them, the driving mechanism can convert the internal pressure change of the phase change heat storage unit into mechanical displacement so as to adjust the spatial orientation of the flow guiding vanes;

[0010] The beam control structure includes a thermoresponsive material layer coupled to the heat conduction structure and a prism array embedded therein, where:

[0011] The deformation temperature T1 of the thermoresponsive material layer is higher than the rated operating temperature T2 of the light source module and lower than its safety temperature threshold T3;

[0012] The temperature conducted by the heat conduction structure is T4. When T4 is less than T1, the prism array maintains a preset prism arrangement to focus the beam; when T4 is greater than T1, the thermoresponsive material layer shrinks due to heat, the distance between adjacent prisms of the prism array decreases and / or buckling deformation occurs on the prism surface, resulting in the beam changing from a focused state to a scattered state.

[0013] Preferably, the phase change heat storage unit includes a sealed housing and an evaporation chamber and a condensation chamber provided therein. The evaporation chamber is tightly connected to the heat conduction structure, the condensation chamber extends to the outer wall of the explosion-proof housing, and the liquid phase change working medium in the evaporation chamber evaporates when heated and enters the condensation chamber to condense into a liquid and release heat. The liquid phase change working medium returns to the evaporation chamber through a reflux channel.

[0014] Preferably, the heat conduction structure includes a heat conduction substrate and a conduction core. The surface of the heat conduction substrate is attached to the light source module, and the conduction core is provided on the heat conduction substrate. Among them, a three-dimensionally connected grid structure is formed inside the conduction core, and the heat conduction substrate is connected to the evaporation chamber through a heat pipe.

[0015] Preferably, the aperture of the conduction core decreases from the side far from the light source module to the side close to it. A working medium diversion groove is provided on the surface of the conduction core to guide the reflux of the liquefied phase change working medium. In the initial state, at least part of the structure of the gas-liquid phase change working medium is located in the evaporation chamber, and the rest of the structure is located in the grid structure.

[0016] Preferably, the outer wall of the condensation chamber is provided with a radially extending heat dissipation fin array, and the extending direction of the fins is arranged non-parallel to the axial direction of the explosion-proof housing. The heat dissipation fin array is distributed in a gradient along the axial direction of the condensation chamber, and the fin density increases from the side close to the explosion-proof housing to the outside. Among them, a groove structure is provided on the surface of the fins of the heat dissipation fin array.

[0017] Preferably, the driving mechanism includes a pneumatic induction film and a crank-slider mechanism linked therewith. The pneumatic induction film generates an axial displacement in response to the change in steam pressure within the phase change heat storage unit, which is converted into a rotational motion through the crank-slider mechanism to drive the diversion vane to deflect around its axis. Among them, there is a specific included angle between the deflection direction of the diversion vane and the fin extension direction of the heat dissipation fin array. When the vaporization pressure of the gas-liquid phase change working medium increases, the diversion vane deflects to guide the airflow to flow along the direction of the groove structure.

[0018] Preferably, the number of the diversion vanes is set to multiple groups, which are arranged at a certain distance from each other. The multiple groups of diversion vanes are connected to the crank-slider mechanism through a linkage rod, and the crank-slider mechanism drives the multiple groups of diversion vanes to deflect synchronously through rotation.

[0019] Preferably, the driving mechanism is provided with a damping buffer device. The damping buffer device includes a pneumatic chamber communicated with the phase change heat storage unit, an output rod connected to the diversion vane, and a throttling structure arranged in the pneumatic chamber. When the internal pressure of the phase change heat storage unit changes, the air pressure in the pneumatic chamber pushes the output rod to move, and the damping effect of the throttling structure is used to control the deflection movement of the diversion vane.

[0020] Preferably, the prism array is provided with an anti-adhesion structure. The anti-adhesion structure includes bumps and an anti-adhesion coating arranged on the contact surfaces of adjacent prisms. When the thermoresponsive material layer shrinks upon heating and reduces the prism spacing, the bumps are used to limit the movement of adjacent prisms for subsequent resetting of the prisms.

[0021] Preferably, the explosion-proof housing includes a light source chamber, a buffer chamber, and an explosion isolation barrier. The light source chamber is for placing the light source module, and the buffer chamber is for placing some structures of the phase change heat dissipation system, the diversion component, and the light beam regulation structure.

[0022] The present invention adopts the above technical solutions, and compared with the prior art, has the following technical effects:

[0023] The present invention achieves efficient heat conduction through a phase change heat dissipation system (gas-liquid phase change working medium circulation), and cooperates with a dynamic flow guiding component (pressure-driven flow guiding blades deflection) to automatically optimize the air flow path, significantly improving the heat dissipation efficiency; at the same time, a temperature-sensitive beam control structure (thermal-responsive material layer and prism array linkage) is adopted to actively convert the beam from focusing to scattering when overheating, avoiding the risk of local high temperature; the explosion-proof housing fundamentally eliminates the possibility of explosion propagation through a cavity isolation design (light source cavity, buffer cavity and explosion-proof barrier) and the non-contact heat transfer characteristics of phase change heat dissipation, and the detail optimizations such as the gradient grid of the conduction core, the groove structure of the heat dissipation fins and the anti-adhesion prism array further ensure the reliability and long life of the system in high-temperature and flammable environments, comprehensively realizing the collaborative optimization of heat dissipation performance, safety protection and adaptive adjustment. Description of the Drawings

[0024] Figure 1 is the front view of a safe and highly heat-dissipating engineering explosion-proof lamp of the present invention;

[0025] Figure 2 is the front sectional view of a safe and highly heat-dissipating engineering explosion-proof lamp of the present invention;

[0026] Figure 3 is the enlarged sectional view of a safe and highly heat-dissipating engineering explosion-proof lamp of the present invention;

[0027] Figure 4 is the schematic diagram of the crank-slider mechanism and the flow guiding blades of a safe and highly heat-dissipating engineering explosion-proof lamp of the present invention;

[0028] Figure 5 is the schematic diagram of the damping buffer device and the air pressure sensing film of a safe and highly heat-dissipating engineering explosion-proof lamp of the present invention;

[0029] Figure 6 is the schematic diagram of the light source module of a safe and highly heat-dissipating engineering explosion-proof lamp of the present invention;

[0030] Figure 7 is the schematic diagram of the phase change heat storage unit of a safe and highly heat-dissipating engineering explosion-proof lamp of the present invention;

[0031] Figure 8 is the schematic diagram of the conduction core of a safe and highly heat-dissipating engineering explosion-proof lamp of the present invention;

[0032] Figure 9 is the schematic diagram of the beam control structure of a safe and highly heat-dissipating engineering explosion-proof lamp of the present invention;

[0033] Figure 10 is the position relationship diagram of the beam control structure and the phase change heat dissipation system of a safe and highly heat-dissipating engineering explosion-proof lamp of the present invention.

[0034] Among them, each reference numeral is: 1, explosion-proof housing; 101, accommodation cavity; 102, light source cavity; 103, buffer cavity; 104, flameproof barrier; 2, light source module; 3, phase change heat dissipation system; 301, phase change heat storage unit; 302, heat conduction structure; 303, sealed housing; 304, evaporation cavity; 305, condensation cavity; 306, reflux channel; 307, heat conduction substrate; 308, conduction core; 309, grid structure; 310, heat pipe; 311, working fluid diversion groove; 312, heat dissipation fin array; 313, groove structure; 4, diversion component; 401, diversion vane; 402, driving mechanism; 403, air pressure sensing film; 404, crank-slider mechanism; 405, connecting rod; 406, damping buffer device; 407, air pressure cavity; 408, output rod; 409, throttling structure; 5, light beam regulation structure; 501, heat-responsive material layer; 502, prism array; 503, anti-adhesion structure; 504, bump; 505, anti-adhesive coating. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0036] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0037] Embodiment 1

[0038] As shown in the attached Figures 1 to 10 figures, a safety and strong heat dissipation type engineering explosion-proof lamp includes an explosion-proof housing 1 with an accommodation cavity 101 formed inside;

[0039] A light source module 2 is arranged in the accommodation cavity 101;

[0040] A phase change heat dissipation system 3 includes a phase change heat storage unit 301 arranged in the explosion-proof housing 1 and a heat conduction structure 302 arranged around the light source module 2. Among them, a gas-liquid phase change working fluid is encapsulated in the phase change heat storage unit 301 and forms a heat circulation loop with the heat conduction structure 302. The phase change heat storage unit 301 transfers the heat of the light source module 2 to the outside of the explosion-proof housing 1 through gas-liquid phase change;

[0041] A diversion component 4 includes a diversion vane 401 arranged outside the explosion-proof housing 1 and a driving mechanism 402 connected to the phase change heat storage unit 301. Among them, the driving mechanism 402 can convert the internal pressure change of the phase change heat storage unit 301 into mechanical displacement to adjust the spatial orientation of the diversion vane 401;

[0042] The beam control structure 5 includes a thermoresponsive material layer 501 coupled to the heat conduction structure 302 and a prism array 502 embedded therein, where:

[0043] The deformation temperature T1 of the thermoresponsive material layer 501 is higher than the rated operating temperature T2 of the light source module 2 and lower than its safety temperature threshold T3;

[0044] The temperature conducted by the heat conduction structure 302 is T4. When T4 is less than T1, the prism array 502 maintains a preset prism arrangement to focus the light beam; when T4 is greater than T1, the thermoresponsive material layer 501 shrinks due to heat, and the distance between adjacent prisms of the prism array 502 decreases and / or buckling deformation occurs on the prism surface, resulting in the light beam changing from a focused state to a scattered state.

[0045] Among them: The explosion-proof housing 1 adopts a multi-layer composite explosion-proof design. The accommodation cavity 101 provided inside it is divided into a light source cavity 102 and a buffer cavity 103 by a high-strength flameproof structure. The inner wall of the light source cavity 102 is provided with a high-reflectivity functional layer, which matches the optical output characteristics of the light source module 2, and at the same time integrates a thermal expansion compensation mechanism to avoid the influence of temperature deformation on the optical path. The flameproof barrier 104 adopts a composite structure of microporous pressure relief and metal mesh attenuation, and is arranged in the buffer cavity 103 as an isolation barrier between the light source cavity 102 and the external environment, and can effectively prevent explosion and isolate fire.

[0046] The light source module 2 is fixed at the center of the light source cavity 102 through a three-dimensional adjustment bracket, and its power supply line is connected to the intelligent power distribution system of the buffer cavity 103 through an explosion-proof connector. The module substrate and the heat conduction substrate 307 of the heat conduction structure 302 achieve zero-gap thermal coupling through a liquid metal interface material to ensure efficient heat dissipation. The light source module 2 includes a light source end and a power supply end. The power supply end is used to supply power to the light source end, and a partition structure is provided between the two. Thus, when the light source end explodes and catches fire accidentally, the fire can be effectively isolated, preventing the flame from shooting out of the explosion-proof housing 1, and the safety and stability are higher. The setting of the partition structure will not affect the heat transfer of the light source module 2.

[0047] The phase change heat dissipation system 3 is composed of a phase change heat storage unit 301 and a heat conduction structure 302. The heat conduction structure 302 adopts a tree-shaped fractal layout. Its heat conduction substrate 307 is closely attached to the light source module 2 for heat exchange. The overall shape of the heat conduction substrate 307 can be a special-shaped structure to better fit the light source module 2. The gas-liquid phase change working medium can be hydrofluoroether, water, or a water-ethanol mixture, etc.; the gradient porous structure of the conduction core 308 forms a capillary pressure difference to drive the directional circulation of the phase change working medium. The liquefied working medium on the side close to the light source module 2 absorbs heat and vaporizes, thereby reducing the temperature of the light source module 2. The vaporized working medium enters the condensation cavity 305 and the heat dissipation fin array 312 extending therefrom, and after heat exchange, it condenses and returns to the evaporation cavity 304 through the return channel 306 to form a closed-loop heat cycle. When the heat of the light source is conducted to the evaporation cavity 304, the working medium vaporizes and releases heat in the condensation cavity 305, and exchanges heat with the outside through the heat dissipation fin array 312, thereby improving the heat dissipation effect on the light source module 2.

[0048] The guide vanes 401 of the guide assembly 4 are dynamically deflected through the drive mechanism 402. The drive mechanism 402 includes a pneumatic sensing film 403 and a crank-slider mechanism 404, which can convert the change in the vapor pressure of the phase change heat storage unit 301 into the adjustment of the vane angle. When the system temperature rises, the steam pressure pushes the pneumatic sensing film 403 to displace, and drives the guide vanes 401 to deflect through the crank-slider mechanism 404. The number of guide vanes 401 can be set in multiple groups so that the vanes can guide the gas to one or more heat dissipation fins one-to-one, thereby improving the heat dissipation effect. The connecting rod 405 is connected to the crank-slider mechanism 404 by means of gears or hinges, so as to fix multiple guide vanes 401 as a whole to deflect synchronously. The damping buffer device 406 ensures the smooth movement of the guide vanes 401 without impact through the cooperation of the pneumatic cavity 407 and the throttling structure 409. The setting of the guide assembly 4 facilitates the adjustment of the deflection direction of the guide vanes 401 by using the vapor pressure. The purpose of the deflection direction is to guide the external air flow to flow along the heat dissipation fin array 312, thereby improving the heat exchange efficiency.

[0049] The beam control structure 5 is based on a thermally deformable intelligent material, and the deformation temperature T1 of its thermally responsive material layer 501 is set between the rated temperature T2 and the safety threshold T3 of the light source module 2. The prism array 502 embedded in the thermally responsive material layer 501 maintains precise arrangement under normal conditions (T4 < T1), focusing the light beam to meet the lighting requirements; when the temperature rises (T4 > T1), the thermally responsive material layer 501 shrinks, resulting in a decrease in the prism spacing. At the same time, controllable buckling deformation occurs on the prism surface, and the light beam changes from focusing to scattering. The anti-sticking structure 503 ensures that the prism can be fully reset after deformation through the synergistic effect of the bumps 504 and the anti-sticking coating 505. The beam control structure (5) realizes temperature-adaptive dynamic adjustment of the light beam through the synergistic effect of the thermally responsive material layer 501 and the prism array 502: when working normally, it maintains a focused light beam to provide efficient lighting. When the lamp overheats (T4 ≥ T1), the thermally responsive material layer 501 shrinks, forcing the prism spacing to decrease or causing buckling deformation, automatically switching to the scattering state, thereby reducing the local heat density and expanding the heat dissipation area to prevent safety hazards caused by high temperatures. The advantages are passive triggering (no external control required), fast response (accurately matching the temperature threshold), and reliable reset (anti-sticking design), which not only ensures the intrinsic safety in the explosion-proof environment but also optimizes the balance between heat dissipation and energy efficiency.

[0050] Embodiment 2

[0051] Based on Embodiment 1, the solution in Embodiment 1 is further refined and introduced in combination with the following specific working methods, such as Figures 1 to 10 shown, and details can be seen in the following description:

[0052] As a preferred embodiment, the phase change heat storage unit 301 includes a sealed housing 303 and an evaporation chamber 304 and a condensation chamber 305 provided therein. The evaporation chamber 304 is tightly connected to the heat conduction structure 302. The condensation chamber 305 extends to the outer wall of the explosion-proof housing 1. After the liquid phase change working medium in the evaporation chamber 304 is heated and evaporated, it enters the condensation chamber 305 to condense into a liquid and release heat. After that, the phase change working medium returns to the evaporation chamber 304 through the return channel 306. Further, the sealed housing 303 is designed with a multi-layer composite explosion-proof structure to independently arrange the evaporation chamber 304 and the condensation chamber 305 from the explosion-proof housing 1. The purpose of such setting is to ensure that the gas-liquid phase change working medium will not leak during the evaporation and condensation processes, and when the internal pressure increases during evaporation and gasification, the sealed housing 303 can well withstand the pressure fluctuation, avoid the direct action of the pressure on the explosion-proof housing 1, and has higher stability and safety. The return channel 306 is designed with a bionic capillary structure and coated with a super-hydrophilic coating, so as to facilitate the return of the phase change working medium. After the phase change working medium is heated and gasified in the evaporation chamber 304, the vapor enters the condensation chamber 305 through the flow channel, liquefies after efficient heat exchange with the external environment on the outer wall of the condensation chamber 305, and the liquid working medium returns to the evaporation chamber 304 along the return channel 306 under the action of capillary force, forming a closed cycle. The entire phase change heat storage unit 301 realizes the characteristics of rapid response, efficient heat transfer and stable operation through multi-physical field collaborative design, meeting the stringent requirements of explosion-proof lamps for the heat dissipation system.

[0053] As a preferred embodiment, the heat conduction structure 302 includes a heat conduction substrate 307 and a conduction core 308. The surface of the heat conduction substrate 307 is attached to the light source module 2. The conduction core 308 is arranged on the heat conduction substrate 307. Among them, a three-dimensionally connected grid structure 309 is formed inside the conduction core 308. The heat conduction substrate 307 and the evaporation chamber 304 are connected through a heat pipe 310. Further, the heat conduction substrate 307 is made of a special composite material, and through precision machining, it is ensured to be in close contact with the light source module 2 to form a primary heat conduction layer, thereby improving the heat exchange effect. The light source module 2 includes a light source end and a power supply end. The shape of the heat conduction substrate 307 can be an irregular structure so as to be in close contact with the light source module 2 for heat exchange. The three-dimensional grid structure 309 of the conduction core 308 shows a gradient change, and the surface is specially treated to enhance the wettability of the working medium and the heat exchange efficiency. The conduction core 308 is integrally in a U-shaped or cage-like structure and is arranged to wrap the heat conduction substrate 307 and the light source module 2 to form a secondary heat conduction layer. The heat pipe 310 adopts an innovative internal structure design, and cooperates with a high-performance phase change working medium to achieve the maximum heat transfer capacity in a compact space. Seamless thermal coupling is realized between the components through an optimized connection technology. The entire system is optimized through a carefully designed heat flow path, can quickly respond to heat load changes and achieve uniform heat distribution, and maintain a stable heat dissipation performance during long-term use, fully meeting the strict requirements of explosion-proof lighting systems for high-efficiency heat dissipation and reliability.

[0054] As a preferred embodiment, the conduction core 308 decreases in aperture from the side far from the light source module 2 to the side close to the aperture. The surface of the conduction core 308 is provided with a working fluid diversion groove 311 to guide the liquefied phase change working fluid to flow back. In the initial state, at least part of the structure of the gas-liquid phase change working fluid is located in the evaporation chamber 304, and the rest of the structure is located in the grid structure 309. Further, the conduction core 308 is prepared from a gradient porous metal material, and the aperture gradually changes from 500 μm on the side far from the light source to 100 μm on the side close to the light source, and the porosity correspondingly decreases from 60% to 30%, forming a capillary pressure gradient. The purpose of such a setting is that the aperture on the side close to the light source is smaller, and the grid structure 309 with a small aperture generates a stronger capillary force to actively adsorb the liquefied working fluid to flow back to the high-temperature area (the side close to the light source), while the vapor naturally flows to the side with a large aperture (low-pressure area), thus forming a directional circulation for heat exchange. The working fluid diversion groove 311 is designed as a spiral micro-groove structure, and the surface is treated with super-hydrophilicity so that the contact angle is less than 10 degrees. The function of the working fluid diversion groove 311 ensures that there is always liquefied working fluid in the aperture of the grid structure 309 on the side close to the light source to avoid dry burning. The working fluid distribution between the evaporation chamber 304 and the grid structure 309 is optimized by computational fluid dynamics to ensure that under the combined action of gravity, capillary force and vapor pressure, the liquid working fluid can quickly flow back to the evaporation area along the working fluid diversion groove 311. The whole system can ensure a stable working fluid circulation and has a relatively high heat conduction efficiency.

[0055] As a preferred embodiment, the outer wall of the condensation chamber 305 is provided with a radially extending heat dissipation fin array 312, and the extending direction of the fins is arranged non-parallel to the axial direction of the explosion-proof housing 1. The heat dissipation fin array 312 is spirally arranged around the explosion-proof housing 1, and the pitch decreases from the light source side of the explosion-proof housing 1 to the non-light source side. Among them, the fins of the heat dissipation fin array 312 are inclined, and the surface is provided with a groove structure 313. Further, the heat dissipation fin array 312 is integrally spirally arranged around the explosion-proof housing 1. The spiral arrangement can ensure that the condensation chamber 305 is fully in contact with the heat dissipation fin array 312 to avoid local heat accumulation. The spiral structure can extend the air flow contact time, enhance turbulence and expand the heat dissipation area to achieve uniform heat dissipation in a limited space. The inclined design reduces the wind resistance through directional diversion, and cooperates with the diversion vane 401 to control the air flow direction to prevent hot air from flowing back. The combination of the two can improve the heat dissipation efficiency, and at the same time has the advantages of anti-dust accumulation and natural convection optimization, which is particularly suitable for the high safety requirements and space limitations of explosion-proof lamps. The setting of the groove structure 313 can further improve the heat dissipation effect.

[0056] As a preferred embodiment, the driving mechanism 402 includes a pneumatic induction film 403 and a crank-slider mechanism 404 linked therewith. The pneumatic induction film 403 generates an axial displacement in response to the change in steam pressure within the phase change heat storage unit 301, which is converted into a rotational motion through the crank-slider mechanism 404 to drive the deflector vane 401 to deflect around its axis. Among them, there is a specific angle between the deflection direction of the deflector vane 401 and the fin extension direction of the heat dissipation fin array 312. When the vaporization pressure of the gas-liquid phase change working medium increases, the deflector vane 401 deflects to guide the air flow along the direction of the groove structure 313. Further, the pneumatic induction film 403 adopts a multi-layer composite structure, including a polyimide base film, a carbon nanotube conductive layer, and a metal reinforcing mesh, with a sensitivity of 0.01 mm / MPa and a fatigue life of more than 100,000 times. The crank-slider mechanism 404 includes a precision linear guide and a double eccentric wheel design, which amplifies and converts the linear displacement of the pneumatic induction film 403 into a rotational angle output of 30 - 90 degrees. A magnetorheological fluid damper is provided at the rotating shaft of the deflector vane 401, which can adjust the rotational resistance in real time according to the pressure change rate to ensure smooth and impact-free movement. When the system pressure varies within the range of 0.1 - 0.8 MPa, the deflector vane 401 can automatically maintain an optimal deflector angle of 15 - 75 degrees with the heat dissipation fins, causing the air flow to form turbulence along the groove structure 313, with a relatively high heat dissipation efficiency, and at the same time, the air flow noise is controlled below 65 decibels. The entire drive system is controlled by a pressure-angle closed loop, with a response time of less than 200 ms, meeting the requirements of explosion-proof lamps for rapid heat dissipation adjustment.

[0057] As a preferred embodiment, the number of the deflector vanes 401 is set to multiple groups, which are arranged at a certain distance from each other. The multiple groups of deflector vanes 401 are connected to the crank-slider mechanism 404 through a linkage rod 405. The crank-slider mechanism 404 drives the multiple groups of deflector vanes 401 to deflect synchronously through rotation. Further, the multiple groups of deflector vanes 401 can improve the heat dissipation effect on the heat dissipation fin array 312. Arranging them at a certain distance can simultaneously conduct gas flow guidance on the heat dissipation fins at different positions, thereby effectively improving the heat dissipation capacity of the heat dissipation fin array 312. The linkage rod 405 includes a rod body part and a rotating shaft part. The rotating shaft part, as the core structure, is connected to the structure at the center of the crank of the crank-slider mechanism 404, and the two are connected through gear meshing or a chain. When the crank rotates, the rotating shaft part rotates synchronously. The rotating shaft part is located at the center of the rod body part. When the rotating shaft part rotates, the rod body part deflects, thereby driving the whole deflector vane 401 to deflect, so as to adjust the deflector direction and angle for heat dissipation.

[0058] As a preferred embodiment, the drive mechanism 402 is provided with a damping buffer device 406. The damping buffer device 406 includes a pneumatic chamber 407 communicated with the phase change heat storage unit 301, an output rod 408 connected to the guide vane 401, and a throttling structure 409 disposed in the pneumatic chamber 407. Wherein, when the internal pressure of the phase change heat storage unit 301 changes, the air pressure in the pneumatic chamber 407 pushes the output rod 408 to move, and the throttling effect of the throttling structure 409 is used to control the deflection movement of the guide vane 401; further, the pneumatic chamber 407 is integrally formed by high-strength aluminum alloy, and the inner wall is anodized to form a wear-resistant layer, and is provided with a spiral flow guide groove to optimize the air flow distribution. Quick response pressure sensors and temperature compensation modules are respectively arranged at both ends of the cavity to monitor the internal working conditions in real time; the output rod 408 is designed with a titanium alloy hollow structure, an internal displacement feedback optical fiber is integrated, and an outer polytetrafluoroethylene wear-resistant layer is coated. The connection between the rod body and the guide vane 401 adopts a universal joint structure; the throttling structure 409 is composed of an adjustable cone valve and a multi-stage damping orifice plate. The cone valve is driven by a shape memory alloy to realize self-adaptive opening adjustment, and the damping orifice plate adopts a gradient aperture design to form a progressive damping effect; the entire damping buffer device 406 realizes intelligent adjustment through a digital hydraulic control system, and can automatically adjust the damping coefficient according to the pressure change rate of the phase change working medium and the movement speed of the guide vane 401, and maintain stable buffer performance within the working pressure range. The response time is controlled within 80 ms, and at the same time, it has an overpressure protection function. When the pressure exceeds the threshold, the position of the output rod 408 is locked to ensure the safe and reliable operation of the system.

[0059] As a preferred embodiment, the prism array 502 is provided with an anti-sticking structure 503. The anti-sticking structure 503 includes bumps 504 and an anti-adhesion coating 505 disposed on the contact surfaces of adjacent prisms. When the thermoresponsive material layer 501 shrinks due to heat, reducing the prism spacing, the bumps 504 are used to limit the movement of adjacent prisms for the subsequent reset of the prisms; further, the anti-sticking structure 503 is used to prevent adjacent prisms from adhering together, thereby causing deterioration of optical performance and risks of thermal management out of control. The anti-sticking structure 503 includes a dual protection mechanism of a physical limit mechanism and a chemical protection coating: in terms of physical limit, the bumps 504 are precision machined from high-hardness silicon nitride ceramic materials and are uniformly distributed in a pyramid array on the contact surfaces of the prisms. Each bump 504 is provided with nano-scale lubricating grooves at the top; in terms of chemical protection, the anti-adhesion coating 505 is a multi-layer composite structure, which consists of a tungsten carbide transition layer at the bottom layer, a molybdenum disulfide lubricating layer in the middle layer, and a fluorocarbon polymer hydrophobic layer on the surface layer, and is sequentially deposited by magnetron sputtering process; in addition, the anti-sticking structure 503 also includes a temperature-responsive micro-spring assembly, which automatically provides a reverse support force when the prism spacing reaches a critical value, effectively avoiding prism adhesion.

[0060] As a preferred embodiment, the explosion-proof housing 1 includes a light source chamber 102, a buffer chamber 103 and an explosion-proof barrier 104. The light source chamber 102 is for placing the light source module 2, and the buffer chamber 103 is for placing part of the phase change heat dissipation system 3, the flow guiding assembly 4 and the light beam regulating structure 5. Further, the explosion-proof barrier 104 is arranged in the buffer chamber 103 and is designed with a multi-layer composite structure, including a ceramic heat insulation layer, a metal mesh attenuation layer and a microporous pressure relief film, and is integrally formed by a sintering process. The inner wall of the light source chamber 102 is provided with a high-reflectivity nano-coating and integrated with a temperature-deformation self-compensation mechanism to avoid the optical path deviation caused by thermal expansion. The buffer chamber 103 is designed as a multi-stage eddy current flow guiding structure, and a hybrid heat dissipation array with alternating phase change energy storage units and thermoelectric coolers is arranged on its inner surface, and the heat dissipation mode is dynamically adjusted by an intelligent control system. An adaptive explosion-proof filter element is arranged at the interface where the buffer chamber 103 communicates with the outside, and is made of a composite filter material with a shape memory alloy skeleton, which keeps the gas exchange unobstructed under normal conditions and automatically adjusts the pore structure when encountering high-temperature impact. The explosion-proof housing 1 is integrally designed with mechanical optimization to form a gradient intensity transition area between the light source chamber 102 and the buffer chamber 103, so as to realize the hierarchical dissipation of explosion energy and the collaborative optimization of heat dissipation efficiency.

[0061] Finally, the following points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the internal connection of two components, and can be directly connected. The terms "upper", "lower", "left" and "right" are only used to represent the relative position relationship. When the absolute position of the object to be described changes, the relative position relationship may change;

[0062] Second, in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0063] Finally, the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safe and strong heat dissipation engineering explosion-proof lamp, characterized in that: include: An explosion-proof housing (1) having an accommodating cavity (101) formed therein; A light source module (2) is arranged in the accommodating cavity (101); A phase change heat dissipation system (3), comprising a phase change heat storage unit (301) arranged in the explosion-proof housing (1) and a heat conducting structure (302) arranged around the light source module (2), wherein a gas-liquid phase change working medium and a heat circulation loop of the heat conducting structure (302) are encapsulated in the phase change heat storage unit (301), and the phase change heat storage unit (301) transfers the heat of the light source module (2) to the outside of the explosion-proof housing (1) through a gas-liquid phase change; A flow guide assembly (4), comprising a flow guide vane (401) arranged outside the explosion-proof housing (1) and a drive mechanism (402) connected to the phase change heat storage unit (301), wherein the drive mechanism (402) is capable of converting a pressure change inside the phase change heat storage unit (301) into a mechanical displacement, thereby adjusting the spatial orientation of the flow guide vane (401); The light beam control structure (5) comprises a thermally responsive material layer (501) coupled to the heat-conducting structure (302) and a prism array (502) embedded therein, wherein: The deformation temperature T1 of the thermally responsive material layer (501) is higher than the rated operating temperature T2 of the light source module (2) and lower than its safety temperature threshold T3; The temperature conducted by the heat-conducting structure (302) is T4. When T4 is less than T1, the prism array (502) maintains a preset prism arrangement to focus the light beam. When T4 is greater than T1, the thermally responsive material layer (501) shrinks due to heat, the distance between adjacent prisms of the prism array (502) decreases, and / or the prism surface is bent and deformed, causing the light beam to change from a focused state to a scattered state.

2. The safe and strong heat dissipation engineering explosion-proof lamp according to claim 1 is characterized by: The phase-change heat storage unit (301) comprises a sealed shell (303) and an evaporation chamber (304) and a condensation chamber (305) arranged therein; the evaporation chamber (304) is tightly connected to the heat-conducting structure (302); the condensation chamber (305) extends to the outer wall of the explosion-proof shell (1); the liquid phase-change working medium in the evaporation chamber (304) evaporates under heat and then enters the condensation chamber (305) to condense into liquid and release heat; the liquid phase-change working medium returns to the evaporation chamber (304) through a reflux channel (306).

3. The safe and strong heat dissipation engineering explosion-proof lamp according to claim 2 is characterized by: The heat-conducting structure (302) comprises a heat-conducting substrate (307) and a conductive core (308); the surface of the heat-conducting substrate (307) is arranged in contact with the light source module (2); the conductive core (308) is arranged on the heat-conducting substrate (307); a three-dimensionally connected grid structure (309) is formed inside the conductive core (308); and the heat-conducting substrate (307) is connected to the evaporation chamber (304) via a heat pipe (310).

4. The safe and strong heat dissipation engineering explosion-proof lamp according to claim 3 is characterized by: The aperture of the conductive core (308) decreases from the side away from the light source module (2) to the side close to the light source module (2), and a working medium guide groove (311) is provided on the surface of the conductive core (308) to guide the reflux of the liquefied phase change working medium. In an initial state, at least part of the structure of the gas-liquid phase change working medium is located in the evaporation chamber (304), and the rest of the structure is located in the grid structure (309).

5. The safe and strong heat dissipation engineering explosion-proof lamp according to claim 2 is characterized by: The outer wall of the condensation chamber (305) is provided with a radially extending heat dissipation fin array (312), the extension direction of the fins of which is arranged non-parallel to the axial direction of the explosion-proof shell (1), the heat dissipation fin array (312) is arranged in a spiral shape around the explosion-proof shell (1), and the pitch decreases from the light source side to the non-light source side of the explosion-proof shell (1), wherein the fins of the heat dissipation fin array (312) are arranged obliquely, and a groove structure (313) is provided on the surface thereof.

6. The safe and strong heat dissipation engineering explosion-proof lamp according to claim 1 is characterized by: The driving mechanism (402) comprises an air pressure sensing membrane (403) and a crank slider mechanism (404) linked thereto, wherein the air pressure sensing membrane (403) generates an axial displacement in response to a change in the steam pressure in the phase change heat storage unit (301), and the axial displacement is converted into a rotational motion through the crank slider mechanism (404), thereby driving the guide vane (401) to deflect around its axis, wherein a deflection direction of the guide vane (401) and a fin extension direction of the heat dissipation fin array (312) exist at a specific angle, and when the gasification pressure of the gas-liquid phase change working medium increases, the guide vane (401) deflects to guide the airflow to flow along the direction of the groove structure (313).

7. A safe and strong heat dissipation engineering explosion-proof lamp according to claim 6, characterized in that: The guide blades (401) are arranged in multiple groups, which are arranged at a certain distance from each other. The multiple groups of guide blades (401) are connected to the crank slider mechanism (404) through a connecting rod (405). The crank slider mechanism (404) drives the multiple groups of guide blades (401) to deflect synchronously by rotating.

8. The safe and strong heat dissipation engineering explosion-proof lamp according to claim 1 is characterized by: The driving mechanism (402) is provided with a damping buffer device (406), and the damping buffer device (406) comprises a pneumatic chamber (407) connected to the phase change heat storage unit (301), an output rod (408) connected to the guide vane (401), and a throttling structure (409) arranged in the pneumatic chamber (407), wherein when the internal pressure of the phase change heat storage unit (301) changes, the air pressure in the pneumatic chamber (407) pushes the output rod (408) to move, and the deflection movement of the guide vane (401) is controlled through the damping effect of the throttling structure (409).

9. The safe and strong heat dissipation engineering explosion-proof lamp according to claim 1 is characterized by: The prism array (502) is provided with an anti-adhesion structure (503), and the anti-adhesion structure (503) includes convex points (504) and an anti-adhesion coating (505) arranged on the contact surfaces of adjacent prisms. When the heat-responsive material layer (501) shrinks due to heat so that the distance between adjacent prisms decreases, the convex points (504) are used to limit the movement of adjacent prisms to facilitate the subsequent resetting of the prisms.

10. The safe and strong heat dissipation engineering explosion-proof lamp according to claim 1 is characterized by: The explosion-proof housing (1) comprises a light source cavity (102), a buffer cavity (103) and an explosion-proof barrier (104); the light source cavity (102) is used to house the light source module (2); and the buffer cavity (103) is used to house the phase change heat dissipation system (3), the flow guide component (4) and part of the light beam control structure (5).

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