Graphene warmer assembly structure

Abstract

The utility model discloses a graphene warmer assembly structure which comprises a heat radiation plate, connecting frames, an outer shell and a heating element arranged on the heat radiation plate, a plurality of connecting frames are arranged in a shell cavity of the outer shell, and first hooking parts are arranged at the two ends of each connecting frame. Second hooking parts are arranged on the edges of the two sides of the heat radiation plate, the second hooking parts and the first hooking parts of the connecting frame are hooked and detachably installed in a shell cavity of the shell, and an expansion gap is reserved between the heat radiation plate and the shell. Therefore, expansion displacement caused by longitudinal degree-of-freedom thermal expansion coefficient difference between the thermal radiation plate and the shell is allowed through a detachable hooking structure of the thermal radiation plate and the connecting frame, so that the thermal radiation plate can extend when expanded by heating, and deformation caused by different expansion coefficients of the thermal radiation plate and the connecting frame is avoided; and in cooperation with the arrangement of the convection area, thermal stress accumulation is effectively eliminated, the space temperature rise efficiency is improved, actually measured shell deformation is eliminated, and breakage or distortion caused by uneven temperature and different expansion coefficients of the shell or the connecting frame is completely avoided.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment technology, and in particular to an assembly structure for a graphene heater. Background Technology

[0002] Graphene heaters use electric current to excite graphene materials, causing them to generate far-infrared rays (wavelength 6-16μm). These far-infrared rays then transfer heat to the outside world. This light wave is similar to the far-infrared band emitted by the human body, allowing it to be absorbed and converted into heat energy. It also promotes blood circulation and metabolism. Graphene heaters are characterized by high efficiency, energy saving, economy, no pollution, long lifespan, controllable temperature, and easy installation. Their thermal efficiency can reach 80%-99%, far exceeding the 85%-90% of traditional electric heaters. In existing technology, graphene heaters typically consist of a heat radiation plate, heating elements, a shell, and a temperature control system. The heating elements are mounted on the heat radiation plate, which is then mounted on the shell and electrically connected to the temperature control system. The shell is easily installed by hanging it on a wall or ceiling.

[0003] However, the existing technology still has the following defects: the thermal expansion coefficient of the heat radiation plate of the graphene heater is different from that of the outer shell. This causes the outer shell of the heater to deform and twist after a period of use due to the deformation of the heat radiation plate, which in turn causes the outer shell of the heater to deform and twist, causing safety hazards. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a graphene heater assembly structure.

[0005] The purpose of this utility model is achieved by the following technical solution: a graphene heater assembly structure, including a heat radiation plate, a connecting frame, a shell, and a heating element disposed on the heat radiation plate. The shell has a cavity, and a plurality of connecting frames are disposed in the cavity. The two ends of the connecting frames have first hook parts, and the two sides of the heat radiation plate have second hook parts, which hook with the first hook parts of the connecting frames and are detachably installed in the cavity of the shell. An expansion gap is reserved between the heat radiation plate and the shell.

[0006] Furthermore, the first hook part is integrally bent upward from both ends of the connecting frame, and the second hook part is integrally bent inward from the left and right side edges of the heat radiation plate, and is hooked and engaged with the first hook part from top to bottom.

[0007] Furthermore, the first hook portion is provided with a positioning block, and is fitted and assembled with the inner sidewall of the outer shell through the positioning block.

[0008] Furthermore, the top of the connecting frame is integrally bent with a horizontal fixing part, and is fixedly connected to the inner sidewall of the outer shell through the horizontal fixing part.

[0009] Furthermore, the outer shell is provided with end cover plates at both ends, a convection zone is reserved between the outer shell, the end cover plates and the heat radiation plate, and a number of convection holes are provided on the outer shell and / or the end cover plates.

[0010] Furthermore, the top left and right sides of the outer shell are provided with inclined convection surfaces, and a plurality of convection holes are provided on the inclined convection surfaces. The convection holes are provided as strip holes, arrayed circular holes or square holes.

[0011] Furthermore, the outer shell and end cover are respectively provided with mounting brackets for fixed connection with the wall or ceiling.

[0012] Furthermore, the outer surface of the heat radiation plate is provided with a wavy heating surface, and the inner surface of the heat radiation plate is provided with a plurality of holes and slots arranged along its own length for assembling the heating element.

[0013] Furthermore, the cavity also contains a power supply box and a microcrystalline glass plate, with the microcrystalline glass plate positioned on the opening of the cavity and covering the power supply box.

[0014] Furthermore, a supporting partition separates the power supply box from the thermal radiation plate, and the two sides of the microcrystalline glass plate are respectively connected to the supporting partition and the end cover plate of the outer shell.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The graphene heater assembly structure provided in this application embodiment has a heat radiation plate that is hooked and assembled with the first hook of the connecting frame through a second hook. This detachable hook structure allows the heat radiation plate and the outer shell to expand due to the difference in the coefficient of thermal expansion in the longitudinal degree of freedom. This allows the aluminum alloy heat radiation plate to expand when heated under a temperature difference of more than 400 degrees without deformation due to the difference in the coefficient of expansion with the connecting frame. Furthermore, the expansion gap reserved between the heat radiation plate and the outer shell forms a convection zone. With the setting of the convection zone, the accumulation of thermal stress is effectively eliminated, the heating efficiency of the space is improved, and the heat radiation plate will not interfere with the outer shell after being heated and expanded, thus eliminating the measured deformation of the outer shell and completely avoiding the breakage or twisting deformation caused by uneven temperature and different coefficients of expansion of the shell or connecting frame. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure and the direction of the heat radiation plate in a preferred embodiment of this utility model;

[0017] Figure 2 This is an exploded view of the structure between the outer shell and the heat radiation plate in a preferred embodiment of the present invention;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 A side view of the preferred embodiment of this utility model after the heat radiation plate is assembled with the connecting frame and the decorative plate;

[0020] Figure 5 This is an exploded view of the structure between the microcrystalline glass plate, the power supply box, and the outer shell in a preferred embodiment of the present invention.

[0021] Figure 6 for Figure 5 Enlarged diagram of point B in the middle.

[0022] In the picture:

[0023] 10. Outer shell; 101. Shell cavity; 102. End cover plate; 1021. Mounting protrusion; 103. Inclined convection surface; 1031. Convection hole; 104. Decorative panel;

[0024] 20. Connecting frame; 201. First hook connection; 202. Positioning block; 203. Horizontal fixing part;

[0025] 30. Heat radiation plate; 301. Second hook connection; 302. Wavy heating surface; 303. Groove;

[0026] 40. Convection zone;

[0027] 50. Heating element;

[0028] 60. Power supply box;

[0029] 70. Microcrystalline glass plate;

[0030] 80. Supporting partition; 801. Installing steps; 802. Top edge of partition; 803. Bottom edge of partition;

[0031] 90. Mounting bracket. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0033] like Figure 1-6As shown, a graphene heater assembly structure is available for wall mounting, ceiling mounting, or other recommended installation methods. This graphene heater assembly structure includes a heat radiation plate 30, a connecting frame 20, a housing 10, and a heating element 50 mounted on the heat radiation plate 30. The housing 10 forms a rectangular or arc-shaped cavity 101; the connecting frame 20 extends laterally, with first hook portions 201 at both ends; the heat radiation plate 30 is made of aluminum alloy, which expands more than twice its original size when heated; second hook portions 301 are formed by stamping along both sides of the heat radiation plate 30, forming an upper and lower hook connection with the first hook portions 201.

[0034] During assembly, the top of the connecting frame 20 is fixedly connected to the inner wall of the outer shell 10. Then, the heat radiation plate 30 is hooked and suspended from the first hook parts 201 at both ends of the connecting frame 20 via the second hook parts 301 on both sides. The suspension hook connection between the heat radiation plate 30 and the connecting frame 20 is a connection assembly that does not completely restrict the degree of freedom, allowing the heat radiation plate 30 to have a large space for thermal expansion and contraction deformation, thereby suspending the heat radiation plate 30 inside the shell cavity 101. A 5-8mm expansion gap is maintained between the plate body of the heat radiation plate 30 and the inner wall of the outer shell 10, forming an internal convection zone 40 through this expansion gap. End cover plates 102 are also provided at both ends of the outer shell 10, and a convection zone 40 is also reserved between the end cover plates 102 and the heat radiation plate 30. Mounting brackets 90 are installed on both the outer shell 10 and the end cover plates 102, through which they can be fixed to the wall or suspended from the ceiling.

[0035] The end of the heat radiation plate 30 is also provided with a decorative plate 104, which is fixedly connected to one end of the heat radiation plate 30 by screws. The design of the decorative plate 104 reduces the vibration amplitude of the heat radiation plate 30 by 65%, and no abnormal noise was found during 1500 hours of continuous operation testing (improving dynamic stability).

[0036] A fireproof plastic power supply box 60 is installed at the rear of the housing 101. A support partition 80, made of materials such as ceramic fiber, is provided between the power supply box 60 and the heat radiation plate 30. The top edge 802 of the upper part of the support partition 80 is integrally bent and fixedly connected to the inner wall of the housing 10. The bottom edge 803 of the lower part of the support partition 80 is bent into an L-shaped mounting step 801 with several heat dissipation holes. Furthermore, the 8mm distance between the support partition 80 and the power supply box 60 forms a heat dissipation channel. This design of the support partition 80 and the heat dissipation channel reduces the heat flux density around the power supply box 60 to 3.2W / cm². 2 This meets UL safety standards and improves thermal zoning management.

[0037] The microcrystalline glass plate 70 is installed at the cavity opening of the housing 101 via a snap-fit ​​structure or screw connection. One side of the microcrystalline glass plate 70 engages with the mounting step 801 on the bottom edge 803 of the partition plate, while the other side engages with the mounting protrusion 1021 on the end cover plate 102. Simultaneously, the cavity opening side of the housing 10 provides support for the side of the microcrystalline glass plate 70, thus enabling rapid installation of the microcrystalline glass plate 70. The microcrystalline glass plate 70 has a light transmittance ≥85%, a thickness of 3mm, and completely covers the power supply box 60 area. The installation of the microcrystalline glass plate 70 keeps the temperature of the power supply box 60 area below 68℃, achieving an IP44 protection rating and enhancing electrical safety.

[0038] The heating element 50 used in this embodiment is a graphene material component. The graphene material component can be embedded in the inner surface of the heat radiation plate 30. The graphene material component used in the heating element 50 is electrically connected to the power module installed in the power box 60. The graphene material component is excited by the current to generate far-infrared rays. This light wave is similar to the far-infrared band radiated by the human body itself, and can be absorbed by the human body and converted into heat energy. At the same time, it promotes blood circulation and metabolism, and its thermal efficiency can reach 95%-99%.

[0039] Therefore, the heat radiation plate 30 is hooked and assembled with the first hook part 201 of the connecting frame 20 through the second hook part 301. This detachable hook structure allows the heat radiation plate 30 and the outer shell 10 to expand due to the difference in the coefficient of thermal expansion of the longitudinal degree of freedom. This allows the aluminum alloy heat radiation plate 30 to expand when heated under a temperature difference of more than 400 degrees without deformation due to the difference in the coefficient of expansion with the connecting frame 20. Furthermore, the expansion gap reserved between the heat radiation plate 30 and the outer shell 10 forms a convection zone 40. With the setting of the convection zone 40, the accumulation of thermal stress is effectively eliminated, and the heating efficiency of the space is improved. After the heat radiation plate 30 expands due to heat, it will not interfere with the outer shell 10, so that the measured deformation of the outer shell 10 is eliminated. This completely avoids the breakage or twisting deformation caused by uneven temperature and different coefficients of expansion of the outer shell 10 or the connecting frame 20.

[0040] In this embodiment, the connecting frame 20 can be integrally stamped from stainless steel strip, with both ends bent upwards to form a generally U-shaped first hook portion 201. The aluminum alloy side edge of the heat radiation plate 30 is bent inwards at 90° using a bending machine to form a generally L-shaped second hook portion 301. During assembly, the lateral fold of the second hook portion 301 is engaged into the U-shaped groove of the first hook portion 201, forming a hook-and-loop structure that can slide laterally and / or longitudinally. Therefore, the complementary hook-and-loop structure integrally formed between the connecting frame 20 and the heat radiation plate 30 provides ±2mm thermal displacement compensation space while maintaining assembly accuracy. No structural failure was observed after 200 cycles of thermal cycling, thus achieving the purpose of enhancing deformation adaptability.

[0041] Preferably, a positioning block 202 is integrally bent on one side of the U-shaped groove of the first hook portion 201, and the thickness of the positioning block 202 matches the thickness of the side wall of the heat radiation plate 30. During assembly, the positioning block 202 is fitted to the inner side wall of the outer shell 10 to improve the fit stability between the outer shell 10 and the heat radiation plate 30 and limit the lateral displacement of the heat radiation plate 30 to within ±1.5mm.

[0042] The top of the connecting frame 20 is integrally bent with a horizontal fixing part 203 extending to one side. This fixing part is connected to the threaded hole in the inner top wall of the housing 10 via an M4 countersunk screw. The width of the horizontal fixing part 203 is 0.5-1 times the width of the main body of the connecting frame 20, ensuring stress distribution. The wide connection of the horizontal fixing part 203 reduces the local stress value of the housing 10 from 58MPa to 21MPa, effectively preventing plastic deformation at the connection point, thereby optimizing stress distribution and improving the assembly stability between the connecting frame 20 and the housing 10.

[0043] The top two sides of the outer casing 10 are provided with 45° inclined convection surfaces 103. Each inclined surface has several strip-shaped convection holes 1031, each 120 mm long and 3 mm wide, with a center-to-center distance of 15 mm between adjacent strip-shaped holes. The long axis of the strip-shaped holes is aligned with the upward path of the hot airflow, that is, the strip-shaped holes extend along the length of the convection surface. If necessary, convection holes 1031 can also be provided on the end cover plate 102. Moreover, in this embodiment, the convection holes 1031 can also be provided as strip-shaped holes, arrayed circular holes, or square holes.

[0044] Therefore, the inclined convection surface design increases the hot air velocity by 1.8 times. By opening convection holes 1031 on the inclined convection surface, the convection holes 1031 cooperate with the convection zone 40 to reduce the temperature difference between the inside and outside of the outer shell 10 from 42°C to 28°C, reducing the thermal expansion difference by 54%, thereby strengthening the thermal balance. The maximum surface temperature of the outer shell 10 decreases by 16°C, thereby enhancing the heat dissipation efficiency.

[0045] The outer surface of the heat radiation plate 30 is roll-formed into a sinusoidal wave-shaped heating surface 302 with a certain amplitude and wavelength. The inner surface is machined with several slots 303 extending along the length of the heat radiation plate 30. Graphene material components are embedded in the slots 303 and can be fixed with thermally conductive silicone if necessary. Therefore, by making the outer surface of the heat radiation plate 30 into a wave-shaped heating surface 302, the heat dissipation area can be effectively increased by 35%, and the slots 303 reduce the temperature rise rate of the heating element 50 by 40%, thereby optimizing heat conduction.

[0046] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A graphene warmer assembly structure, characterized by, The device includes a heat radiation plate, a connecting frame, a housing, and a heating element disposed on the heat radiation plate. The housing has a cavity, and a plurality of connecting frames are disposed within the cavity. Each connecting frame has a first hook portion at both ends. The heat radiation plate has a second hook portion on both sides, and the second hook portion hooks onto the first hook portion of the connecting frame, thus allowing it to be detachably installed within the cavity of the housing. An expansion gap is reserved between the heat radiation plate and the housing.

2. The graphene warmer assembly structure according to claim 1, wherein, The first hook part is formed by bending the left and right ends of the connecting frame upwards as a whole, and the second hook part is formed by bending the left and right side edges of the heat radiation plate inwards as a whole, and hooks and engages with the first hook part from top to bottom.

3. The graphene warmer assembly structure of claim 2, wherein, The first hook part is provided with a positioning block, and is fitted and assembled with the inner sidewall of the outer shell through the positioning block.

4. The graphene warmer assembly structure according to claim 1, wherein, The top of the connecting frame is integrally bent with a horizontal fixing part, and is fixedly connected to the inner side wall of the outer shell through the horizontal fixing part.

5. The graphene warmer assembly structure according to claim 1, wherein, The outer shell is provided with end cover plates at both ends, and a convection zone is reserved between the outer shell, the end cover plates and the heat radiation plate, and a number of convection holes are provided on the outer shell and / or the end cover plates.

6. The graphene warmer assembly structure of claim 5, wherein, The top left and right sides of the outer shell are provided with inclined convection surfaces, and a plurality of convection holes are provided on the inclined convection surfaces. The convection holes are provided as strip holes, arrayed circular holes or square holes.

7. The graphene warmer assembly structure according to claim 5, wherein, The outer casing and end cover are respectively provided with mounting brackets for fixed connection with the wall or ceiling.

8. The graphene warmer assembly structure according to any one of claims 1-7, wherein, The outer surface of the heat radiation plate is provided with a wavy heating surface, and the inner surface of the heat radiation plate is provided with a number of holes and slots arranged along its own length for assembling the heating element.

9. The graphene warmer assembly structure according to any one of claims 1-7, wherein, The cavity also contains a power supply box and a microcrystalline glass plate, with the microcrystalline glass plate positioned on the opening of the cavity and covering the power supply box.

10. The graphene warmer assembly structure according to claim 9, wherein, A supporting partition separates the power supply box from the thermal radiation plate, and the two sides of the microcrystalline glass plate are respectively connected to the supporting partition and the end cover plate of the outer shell.

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