Phase change type LED explosion-proof lamp
By designing a phase change cavity and dense liquid absorbing core in the explosion-proof lamp to form a phase change heat pipe structure, the problem of insufficient heat dissipation capacity of existing explosion-proof lamps is solved, and higher power density and longer service life are achieved.
Patent Information
- Application Number
- CN202422236824.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The existing high-power explosion-proof lamps lack heat dissipation capabilities, resulting in increased temperature, product volume, weight and cost.
A phase change LED explosion-proof lamp is designed, using a sealed phase change cavity to fill heat dissipation liquid, combined with a dense liquid absorbent core to form a phase change heat pipe structure, and improve the thermal conductivity of the shell.
It significantly improves heat dissipation efficiency, increases maximum power by about four times, extends the service life of the lamp beads and reduces light fading.
Smart Images
Figure CN222978086U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of explosion-proof lamps, in particular to a phase-change type LED explosion-proof lamp. Background Art
[0002] During the production and trial of some chemical materials, strong light of a specific wavelength is required for irradiation to catalyze the reaction. During the reaction, a light source with extremely high power is required for irradiation, which poses a high requirement for the heat dissipation capacity of the lamp. Most conventional high-power explosion-proof lamps use convection heat dissipation, with slow heat dissipation, high temperature rise, and a large heat dissipation area, increasing the volume, weight, and cost of the product. Summary of the Utility Model
[0003] Aiming at the deficiencies of the existing technology, the utility model provides a phase-change type LED explosion-proof lamp.
[0004] The technical solution of the utility model to solve the above technical problems is as follows:
[0005] A phase-change type LED explosion-proof lamp includes a lamp body. A phase-change cavity is arranged inside the lamp body, and a working fluid is filled inside the phase-change cavity. A light source board is arranged outside the phase-change cavity. The lamp body includes a heat dissipation section and a heat generation section. The light source board is arranged at the position of the heat generation section, and a liquid absorption core is arranged inside the phase-change cavity.
[0006] Further, a plurality of liquid absorption cores are provided.
[0007] Further, phase-change stoppers are arranged at both ends of the phase-change cavity, and the phase-change stoppers are respectively connected to both ends of the phase-change cavity by threads.
[0008] Further, a lamp cover is arranged on the heat generation section, and the lamp cover is connected to the bottom of the heat dissipation section through a pressing frame.
[0009] Further, the lamp cover is made of tempered glass.
[0010] Further, the light source board is connected to the outside of the phase-change cavity by bolts.
[0011] Further, a power supply cavity cover is arranged on the heat dissipation section, and the power supply cavity cover is connected to the lamp body by bolts.
[0012] In summary, compared with the existing technology, the beneficial effects of the above technical solution are:
[0013] A phase-change type LED explosion-proof lamp provided by the utility model is internally designed with a sealed phase-change cavity filled with a certain amount of heat-dissipating liquid. A light source (hot section, i.e., the heat-generating section) is attached to the outer side of the lower end of the phase-change cavity, and a dense liquid-absorbing core (cold section, i.e., the heat-dissipating section) is designed in the phase-change cavity, making the whole lamp a phase-change heat pipe, improving the heat conduction efficiency of the housing, increasing the lamp power density, optimizing the service life of the lamp beads, and reducing light decay. In a conventional heat-dissipating structure, under a similar heat-dissipating area, the maximum power can only reach 100 - 150W. In the technical solution of this utility model, by adding a phase-change structure, the maximum power can be increased to about 500 - 600W, and the actual power is increased by about four times, which significantly improves heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;
[0015] Figure 2 It is a cross-sectional view of the overall structure of an embodiment of the utility model;
[0016] Figure 3 is Figure 2 an enlarged view of part A in
[0017] Description of reference numerals: 1. Lamp body; 2. Phase-change cavity; 3. Armored gland; 4. Phase-change plug; 5. Power supply cavity cover; 6. Light source board; 7. Lamp cover; 8. Pressing frame; 9. Liquid-absorbing core. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The principles and features of the present utility model will be described below in conjunction with all the drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.
[0019] An embodiment of the present utility model discloses a phase-change type LED explosion-proof lamp.
[0020] Refer to Figures 1 - 3, A phase-change type LED explosion-proof lamp, including a lamp body 1. Inside the lamp body 1, there is a phase-change cavity 2. At both ends of the phase-change cavity 2, there are phase-change plugs 4 respectively. The phase-change cavity 2 is sealed by the phase-change plugs 4, and the phase-change plugs 4 are threadedly connected to the phase-change cavity 2, so as to facilitate the operator to open the phase-change cavity 2 to perform operations such as replacing the working fluid inside the phase-change cavity 2. The phase-change cavity 2 is filled with a working fluid, and the working fluid can be a liquid or gas filled inside a heat pipe, such as water, ethanol or acetone, etc. The working fluid is heated and evaporated at one end of the heat pipe (the heating section or the evaporation section), forming vapor, and then condenses and releases heat at the other end (the condensation section or the heat dissipation section). The vapor enters the condensation section under the action of buoyancy force and releases heat in the condensation section to become a liquid and flow back to the evaporation section. The phase-change cavity 2 is cylindrical, and a light source board 6 is arranged on the outside of the phase-change cavity 2, and a light source board 6 is also arranged on the phase-change plug 4 at the bottom of the phase-change cavity 2. The light source board 6 is connected to the outside of the phase-change cavity 2 by bolts, or the light source board 6 can also be fixed by pasting; the lamp body 1 includes a heat dissipation section and a heating section. The heat dissipation section is located above, and the heating section is located below the heat dissipation section. The light source board 6 is arranged at the heating section position of the phase-change cavity 2. Inside the phase-change cavity 2, there is a wick 9, and multiple wicks 9 are provided. After the light source board generates heat, the heat is transmitted to the inside of the phase-change cavity 2. The working fluid is heated and evaporated at the evaporation section, forming vapor, and then condenses and releases heat at the other end (the condensation section), releasing heat. The vapor enters the condensation section under the action of buoyancy force and releases heat in the condensation section to become a liquid and flow back to the evaporation section, and so on.
[0021] The heating section is provided with a lamp cover 7, and the lamp cover 7 is connected to the bottom of the heat dissipation section through a pressing frame 8. The lamp cover 7 is made of tempered glass, which is used to protect the light source board 6, and there is a space between the light source board 6 and the inner wall of the lamp cover 7 for heat circulation.
[0022] The heat dissipation section is provided with structures such as a constant current source and a power supply cavity sealing ring. The heat dissipation section is provided with a power supply cavity cover 5. The power supply cavity cover 5 is connected to the lamp body 1 by bolts, and an armored gland 3 is installed on the power supply cavity cover 5, which is applied to the fixation and protection of the wire and cable of mechanical equipment electricity, ship electricity, and corrosion-proof equipment.
[0023] Among them, the wick is a porous material, usually made of capillary materials, such as porous ceramics or fibers. Its main functions are:
[0024] (1) Form capillary pores on the liquid-vapor interface to generate the capillary pressure required for the continuous circulation of the working medium.
[0025] (2) Provide a flow path for the condensate to flow back to the evaporation section.
[0026] (3) Provide a transfer channel for transferring heat energy between the inner wall of the tube shell and the liquid-vapor interface.
[0027] Regarding the phase change heat pipe, it should be noted that:
[0028] The phase change heat pipe is an efficient heat transfer element, and its internal structure mainly consists of a shell, a wick, and end caps. Its working principle is to utilize the phase change (evaporation and condensation) of the working fluid to transfer heat, thereby achieving efficient heat conduction.
[0029] Shell: The shell is the outer casing of the heat pipe, usually made of metal materials such as copper or aluminum. The interior of the shell is hollow and evacuated or in a low-pressure state to reduce the thermal resistance in the heat conduction path.
[0030] Wick: The wick is a porous material, usually made of capillary materials such as porous ceramics or fibers. Its main functions are:
[0031] (1) Form capillary pores at the liquid-vapor interface to generate the capillary pressure required for the continuous circulation of the working fluid.
[0032] (2) Provide a flow path for the condensate to return to the evaporation section.
[0033] (3) Provide a path for transferring thermal energy between the inner wall of the shell and the liquid-vapor interface.
[0034] Working fluid: The working fluid is a liquid or gas filled inside the heat pipe, such as water, ethanol, or acetone. The working fluid evaporates when heated at one end (evaporation section) of the heat pipe to form vapor, and then condenses and releases heat at the other end (condensation section). The vapor enters the condensation section under the action of buoyancy and releases heat in the condensation section to become liquid and flow back to the evaporation section.
[0035] Phase change plug: The phase change plug is used to seal both ends of the heat pipe, prevent the leakage of the working fluid, and maintain a vacuum or low-pressure state inside the pipe.
[0036] The structural features specifically include:
[0037] (1) The internal structure of the heat pipe is compact, with high heat transfer efficiency, good thermal conductivity, and high temperature uniformity.
[0038] (2) The heat transfer of the heat pipe mainly relies on the vapor-liquid phase change heat transfer of the working liquid, with very small thermal resistance, so it has a very high thermal conductivity.
[0039] (3) The heat pipe can be designed into various shapes and sizes to meet different application requirements.
[0040] A phase-change type LED explosion-proof lamp provided by an embodiment of the present utility model is internally designed with a sealed phase-change cavity 2 filled with a certain amount of heat dissipation liquid. A light source (hot section) is attached to the outer side of the lower end of the phase-change cavity. Dense liquid-absorbing cores are designed in the phase-change cavity, making the whole lamp a phase-change heat pipe, improving the heat conduction efficiency of the housing, increasing the power density of the lamp, optimizing the service life of the lamp beads, and reducing light decay. For a conventional heat dissipation structure, with a similar heat dissipation area, the maximum power can only reach 100 - 150W. In the technical solution of the present utility model, by adding a phase-change structure, the maximum power can be increased to about 500 - 600W, and the actual power is increased by about four times, resulting in a significant improvement in heat dissipation.
[0041] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A phase change LED explosion-proof lamp, characterized in that: The invention comprises a lamp body (1), wherein a phase change cavity (2) is provided inside the lamp body (1), the phase change cavity (2) is filled with a working fluid, a light source plate (6) is provided outside the phase change cavity (2), the lamp body (1) comprises a heat dissipation section and a heat generation section, the light source plate (6) is arranged at the position of the heat generation section, and a liquid absorption core (9) is provided inside the phase change cavity (2).
2. A phase change LED explosion-proof lamp according to claim 1, characterized in that: The liquid absorbing core (9) is provided in plurality.
3. The phase change LED explosion-proof lamp according to claim 1, characterized in that: Phase change plugs (4) are provided at both ends of the phase change cavity (2), and the phase change plugs (4) are respectively threadedly connected to the two ends of the phase change cavity (2).
4. The phase-change LED explosion-proof lamp according to claim 1, characterized in that: The heating section is provided with a lampshade (7), and the lampshade (7) is connected to the bottom of the heat dissipation section through a pressing frame (8).
5. The phase-change LED explosion-proof lamp according to claim 4, characterized in that: The lampshade (7) is made of tempered glass.
6. The phase-change LED explosion-proof lamp according to claim 1, characterized in that: The light source plate (6) is connected to the outside of the phase change cavity (2) by means of bolts.
7. The phase-change LED explosion-proof lamp according to claim 1, characterized in that: The lamp body (1) is provided with a power cavity cover (5), and the power cavity cover (5) is connected to the lamp body (1) via bolts.