Long life corrosion resistant cast aluminum heater

Abstract

The utility model provides a kind of long-life corrosion-resistant cast aluminum heater, including heating assembly, the heating assembly includes cast aluminum shell, upper screw, upper cover, lower screw, lower cover, limit post, installation mouth, insulating framework, spiral heating wire, heat-conducting insulating glue, threading hole and insulating wire.The utility model is through cast aluminum shell and the surface anticorrosive coating of radiating fin, can isolate acid-base substance in chemical production, salt in seaside air and other corrosive medium, avoid shell to be corroded, prevent structural strength reduction, and by multiple sealing protection structure, can prevent external corrosive gas and liquid to enter heater interior, protect internal component, prolong overall service life;Through spiral heating wire, adopt the nickel-chromium alloy wire of strong antioxidation, not easy to age, fracture under high temperature;Insulating framework is made of ceramic material, insulation, high-temperature-resistant performance is good, improves the stability of spiral heating wire work, reduces fault occurrence, guarantees the stable operation of heater.

Description

Technical Field

[0001] This utility model relates to the field of heater technology, and in particular to a long-life, corrosion-resistant cast aluminum heater. Background Technology

[0002] Heaters play a crucial role in numerous industrial production and daily life applications. Cast aluminum heaters are widely used due to their good thermal conductivity and certain mechanical strength. However, existing cast aluminum heaters still have some problems that urgently need to be solved in practical use.

[0003] On the one hand, in some corrosive environments, such as chemical production sites and humid coastal areas, the aluminum shell of cast aluminum heaters is easily corroded. Once the cast aluminum shell is corroded, it will not only affect the appearance of the heater, but also reduce its structural strength, leading to the exposure of the internal heating elements, thereby causing safety hazards and seriously shortening the service life of the heater. On the other hand, after long-term use, the internal heating wires of existing cast aluminum heaters are prone to aging and breakage, which further affects their overall service life and stability. Therefore, a long-life corrosion-resistant cast aluminum heater is proposed. Utility Model Content

[0004] In view of this, the present invention provides a long-life corrosion-resistant cast aluminum heater to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial option.

[0005] The technical solution of this utility model embodiment is implemented as follows: a long-life corrosion-resistant cast aluminum heater, including a heating assembly, the heating assembly including a cast aluminum shell, an upper screw, an upper cover, a lower screw, a lower cover, a limiting post, a mounting port, an insulating frame, a spiral heating wire, thermally conductive insulating adhesive, a wire hole and an insulated wire; The top of the cast aluminum shell is fixedly connected to a top cover by multiple upper screws, and the bottom of the cast aluminum shell is fixedly connected to a bottom cover by multiple lower screws. A limiting post is provided at the center of the adjacent side of both the top and bottom covers. An installation port is provided at the center of both the top and bottom of the cast aluminum shell. The outer wall of the limiting post is slidably connected to the inner wall of the installation port. An insulating frame is attached to the adjacent side of the two limiting posts. A spiral heating wire is wound around the outer wall of the insulating frame. Thermally conductive insulating adhesive is filled between the insulating frame and the cast aluminum shell. The spiral heating wire is located inside the thermally conductive insulating adhesive. A wire-passing hole is provided at the center of the upper surface of the top cover. An insulated wire passes through the wire-passing hole, and one end of the insulated wire is electrically connected to one end of the spiral heating wire.

[0006] More preferably, a limiting ring is fixedly connected to the outer side of the center of the two adjacent limiting posts, and an annular groove is formed on the outer side of the center of the upper and lower surfaces of the insulating frame. The outer side wall of the limiting ring is slidably connected to the inner side wall of the annular groove. An elastic protective pad is fixedly connected to the adjacent side of the two limiting rings, and the adjacent side of the two elastic protective pads is respectively attached to the adjacent side of the inner side wall of the two annular grooves.

[0007] More preferably, the outer side wall of the cast aluminum shell is provided with a plurality of heat dissipation fins, and the surfaces of the cast aluminum shell and the heat dissipation fins are both provided with an anti-corrosion coating.

[0008] More preferably, the upper cover and the lower cover are respectively fitted with sealing gaskets on the outer side of the adjacent side near the limiting post, and the two sealing gaskets are respectively fitted with the outer side of the upper and lower surfaces of the cast aluminum shell near the mounting port.

[0009] More preferably, the other end of the insulated wire is electrically connected to a connector.

[0010] More preferably, an annular sealing groove is provided in the middle of the outer side wall of the limiting post, and an annular sealing ring is fixedly connected to the inner side wall of the annular sealing groove. The outer side wall of the annular sealing ring is fitted and connected to the middle of the inner side wall of the installation port.

[0011] More preferably, an annular sealing sleeve is fixedly connected to the inner wall of the wire hole, and the inner wall of the annular sealing sleeve is fixedly connected to the outer wall of the insulated wire near the spiral heating wire.

[0012] More preferably, the thickness of the anti-corrosion coating is 0.3-0.5 mm.

[0013] The present invention has the following advantages due to the adoption of the above technical solution: 1. This utility model uses a 0.3-0.5mm thick silicone resin anti-corrosion coating on the surface of the cast aluminum shell and heat dissipation fins to isolate corrosive media such as acid and alkali substances in chemical production and salt in the seaside air, so as to prevent the shell from being corroded, prevent the structural strength from being reduced, and extend the overall service life. 2. This utility model uses nickel-chromium alloy wire with strong oxidation resistance for the spiral heating wire, which is not easy to age or break at high temperatures; the insulating frame is made of ceramic material, which has good insulation and high temperature resistance, which can ensure the stable operation of the spiral heating wire, reduce the occurrence of failures, and extend the service life of the heating component. 3. This utility model, through a multi-layered sealing and protective structure, such as sealing gaskets, annular sealing rings, and annular sealing sleeves, can prevent external corrosive gases and liquids from entering the heater, protecting internal components and making them adaptable to harsh environments such as chemical plants and coastal areas. At the same time, the upper and lower covers are fixed to the cast aluminum shell, the limiting post is slidably connected to the mounting port, the limiting ring cooperates with the annular groove, and there is also an elastic protective pad supporting the insulating frame, making the internal structure stable, thereby reducing component shaking and displacement, and ensuring the stable operation of the heater.

[0014] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is a structural diagram of the insulating frame and spiral heating wire of this utility model; Figure 4 This is a structural diagram of the lower cover and annular sealing ring of this utility model.

[0017] Reference numerals: 1. Heating assembly; 11. Cast aluminum housing; 12. Upper screw; 13. Upper cover; 14. Lower screw; 15. Lower cover; 16. Limiting post; 17. Mounting port; 18. Insulating frame; 19. Spiral heating wire; 20. Thermally conductive insulating adhesive; 21. Wire hole; 22. Insulated wire; 23. Anti-corrosion coating; 24. Connecting plug; 25. Annular sealing sleeve; 26. Limiting ring; 27. Annular groove; 28. Elastic protective pad; 29. ​​Heat dissipation fins; 30. Sealing gasket; 31. Annular sealing groove; 32. Annular sealing ring. Detailed Implementation

[0018] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0019] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0020] like Figures 1-4 As shown, this utility model embodiment provides a long-life corrosion-resistant cast aluminum heater, including a heating component 1. The heating component 1 includes a cast aluminum shell 11, an upper screw 12, an upper cover 13, a lower screw 14, a lower cover 15, a limiting post 16, a mounting port 17, an insulating frame 18, a spiral heating wire 19, a thermally conductive insulating adhesive 20, a wire hole 21, and an insulated wire 22. The top of the cast aluminum housing 11 is fixedly connected to the top cover 13 by multiple upper screws 12, and the bottom of the cast aluminum housing 11 is fixedly connected to the bottom cover 15 by multiple lower screws 14. Limiting posts 16 are provided at the center of the adjacent sides of the upper cover 13 and the lower cover 15. Mounting openings 17 are provided at the center of the top and bottom of the cast aluminum housing 11. The outer side wall of the limiting post 16 is slidably connected to the inner side wall of the mounting opening 17. An insulating frame 18 is attached to the adjacent sides of the two limiting posts 16. A spiral heating wire 19 is wound around the outer side wall of the insulating frame 18. Thermally conductive insulating adhesive 20 is filled between the insulating frame 18 and the cast aluminum housing 11. The spiral heating wire 19 is located inside the thermally conductive insulating adhesive 20. A wire hole 21 is provided at the center of the upper surface of the upper cover 13. An insulated wire 22 passes through the wire hole 21, and one end of the insulated wire 22 is electrically connected to… The spiral heating wire 19 is located at one end. The top of the cast aluminum shell 11 is fixed to the upper cover 13 by the upper screw 12, and the bottom is fixed to the lower cover 15 by the lower screw 14, forming a closed space. The limiting post 16 at the center of the upper cover 13 and the lower cover 15 is inserted into the mounting port 17 at the top and bottom of the cast aluminum shell 11, respectively, to provide positioning and support. The insulating frame 18 is located between the two limiting posts 16, and the spiral heating wire 19 is wound around its outer wall. The insulating frame 18 is made of insulating material, which can both support the heating wire and prevent the heating wire from short-circuiting with other components. The spiral heating wire 19 is the core component for generating heat. It is made of a material with high resistance and converts electrical energy into heat energy after being energized. The spiral heating wire 19 is made of nickel-chromium alloy wire, which has stronger oxidation resistance than traditional heating wires and is not easy to age and break at high temperatures, further improving the service life of the heater.

[0021] In one embodiment, specifically: Limiting rings 26 are fixedly connected to the outer sides of the centers of the two adjacent limiting posts 16; annular grooves 27 are formed on the outer sides of the centers of the upper and lower surfaces of the insulating frame 18; the outer walls of the limiting rings 26 are slidably connected to the inner walls of the annular grooves 27; elastic protective pads 28 are fixedly connected to the adjacent sides of the two limiting rings 26; the adjacent sides of the two elastic protective pads 28 are respectively attached to the adjacent sides of the inner walls of the two annular grooves 27; the insulating frame 18 is supported and protected by the two elastic protective pads 28, thereby increasing the stability of the insulating frame 18; wherein, the insulating frame 18 is made of ceramic material, which has good insulation performance and high temperature resistance, ensuring the stable operation of the spiral heating wire 19 and extending the service life of the spiral heating wire 19.

[0022] In one embodiment, specifically: a plurality of heat dissipation fins 29 are provided around the outer side wall of the cast aluminum housing 11, and both the surface of the cast aluminum housing 11 and the heat dissipation fins 29 are provided with an anti-corrosion coating 23. The heat dissipation fins 29 are distributed on the outer side wall of the cast aluminum housing 11, thereby increasing the heat dissipation area and improving the heat dissipation efficiency; the anti-corrosion coating 23 covers the surface of the cast aluminum housing 11 and the heat dissipation fins 29, thereby isolating external corrosive substances and protecting the metal parts from corrosion.

[0023] In one embodiment, specifically: sealing gaskets 30 are attached to the outer side of the upper cover 13 and the lower cover 15 near the limiting post 16 on the adjacent side. The two sealing gaskets 30 are attached to the outer side of the upper and lower surfaces of the cast aluminum shell 11 near the mounting port 17, respectively. The sealing gaskets 30 are attached to the connection between the cast aluminum shell 11 and the upper cover 13 and the lower cover 15, thereby preventing external substances from entering from the interface.

[0024] In one embodiment, specifically: the other end of the insulated wire 22 is electrically connected to a connector 24, which facilitates connection to an external power source.

[0025] In one embodiment, specifically: an annular sealing groove 31 is provided in the middle of the outer side wall of the limiting post 16, and an annular sealing ring 32 is fixedly connected to the inner side wall of the annular sealing groove 31. The outer side wall of the annular sealing ring 32 is fitted to the middle of the inner side wall of the mounting port 17. The annular sealing ring 32 is installed in the annular sealing groove 31 of the limiting post 16 and fits tightly with the mounting port 17, thereby further enhancing the sealing performance.

[0026] In one embodiment, specifically: an annular sealing sleeve 25 is fixedly connected to the inner wall of the wire hole 21. The inner wall of the annular sealing sleeve 25 is fixedly connected to the outer wall of the insulated wire 22 near the spiral heating wire 19. The annular sealing sleeve 25 is fitted onto the insulated wire 22 to fill the gap between the wire hole 21 and the insulated wire 22, thereby preventing moisture and other substances from entering.

[0027] In one embodiment, specifically: the thickness of the anti-corrosion coating 23 is 0.3-0.5mm, and the anti-corrosion coating 23 is an organosilicon resin coating; wherein, the organosilicon resin has good chemical stability and can effectively resist various corrosive substances, such as acid and alkali substances in chemical production environments, salt in humid seaside air, etc. Its special molecular structure allows it to form a stable protective film on the surface of the cast aluminum shell 11 and the heat dissipation fins 29, preventing external corrosive media from directly contacting the metal, avoiding oxidation, corrosion and other reactions of the metal, thereby extending the service life of the heater; the coating thickness is between 0.3-0.5mm, which is a comprehensive consideration of anti-corrosion... The thickness is determined by factors such as protection effect and cost. If the thickness is too thin, the protection capability is insufficient and it is difficult to effectively block corrosion. If the thickness is too thick, it will not only increase the material cost, but may also affect the heat dissipation effect and the adhesion between the coating and the substrate. This thickness range can ensure reliable anti-corrosion protection without adversely affecting other performance of the heater. In addition, the silicone resin has good adhesion to the surface of the cast aluminum shell 11 and the heat dissipation fins 29. It can firmly adhere to the metal surface and is not easy to fall off. During the long-term use of the heater, even if it is affected by factors such as vibration and temperature changes, the coating can still remain intact and continue to play an anti-corrosion role.

[0028] In operation, this invention works as follows: When the connector 24 is plugged into an external power source, the current is conducted through the insulated wire 22 to the spiral heating wire 19. The spiral heating wire 19 generates heat due to the current flow and operates stably under the support and insulation of the insulating frame 18, preventing short circuits. The generated heat is transferred to the cast aluminum housing 11 through the thermally conductive insulating adhesive 20. The thermally conductive insulating adhesive 20 not only has excellent thermal conductivity, quickly dissipating heat, but also has insulating properties, preventing current leakage and ensuring safe use. The heat dissipation fins 29 on the cast aluminum housing 11 increase the connection with the external power source. The increased contact area with air accelerates heat dissipation. During the heat dissipation process, the anti-corrosion coating 23 on the surface of the cast aluminum shell 11 and the heat dissipation fins 29 effectively resists the erosion of external corrosive substances, extending the service life of the heater. Through the sealing gaskets 30 at the upper cover 13 and the lower cover 15, the annular sealing ring 32 between the limiting post 16 and the mounting port 17, and the annular sealing sleeve 25 at the wire hole 21, external corrosive gases and liquids are prevented from entering the heater, protecting components such as the spiral heating wire 19 and the insulating frame 18, and ensuring the stable operation of the heater.

[0029] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A long-life, corrosion-resistant cast aluminum heater, characterized in that: The heating assembly (1) includes a cast aluminum shell (11), an upper screw (12), an upper cover (13), a lower screw (14), a lower cover (15), a limiting post (16), a mounting port (17), an insulating frame (18), a spiral heating wire (19), thermally conductive insulating adhesive (20), a wire hole (21), and an insulated wire (22). The top of the cast aluminum shell (11) is fixedly connected to a top cover (13) by multiple upper screws (12), and the bottom of the cast aluminum shell (11) is fixedly connected to a bottom cover (15) by multiple lower screws (14). Limiting posts (16) are provided at the center of the adjacent sides of both the top cover (13) and the bottom cover (15). Mounting openings (17) are provided at the center of both the top and bottom of the cast aluminum shell (11). The outer side wall of each limiting post (16) is slidably connected to the inner side wall of the mounting opening (17). The two limiting posts (16) are adjacent to each other... An insulating frame (18) is attached to one side of the cover. A spiral heating wire (19) is wound around the outer wall of the insulating frame (18). Thermally conductive insulating adhesive (20) is filled between the insulating frame (18) and the cast aluminum shell (11). The spiral heating wire (19) is located inside the thermally conductive insulating adhesive (20). A wire hole (21) is provided at the center of the upper surface of the cover (13). An insulated wire (22) passes through the wire hole (21). One end of the insulated wire (22) is electrically connected to one end of the spiral heating wire (19).

2. The long-life, corrosion-resistant cast aluminum heater according to claim 1, characterized in that: Limiting rings (26) are fixedly connected to the outer sides of the center of the two adjacent limiting posts (16). Annular grooves (27) are provided on the outer sides of the center of the upper and lower surfaces of the insulating frame (18). The outer side wall of the limiting ring (26) is slidably connected to the inner side wall of the annular groove (27). Elastic protective pads (28) are fixedly connected to the adjacent sides of the two limiting rings (26). The adjacent sides of the two elastic protective pads (28) are respectively attached to the adjacent sides of the inner side walls of the two annular grooves (27).

3. The long-life, corrosion-resistant cast aluminum heater according to claim 1, characterized in that: The outer side wall of the cast aluminum shell (11) is provided with a plurality of heat dissipation fins (29), and the surfaces of the cast aluminum shell (11) and the heat dissipation fins (29) are provided with an anti-corrosion coating (23).

4. The long-life, corrosion-resistant cast aluminum heater according to claim 1, characterized in that: The upper cover (13) and the lower cover (15) are respectively attached to the outer side of the limiting post (16) on the side of their adjacent sides. The two sealing gaskets (30) are respectively attached to the outer side of the upper and lower surfaces of the cast aluminum shell (11) near the mounting port (17).

5. A long-life, corrosion-resistant cast aluminum heater according to claim 1, characterized in that: The other end of the insulated wire (22) is electrically connected to a connector (24).

6. A long-life, corrosion-resistant cast aluminum heater according to claim 4, characterized in that: The outer side wall of the limiting post (16) is provided with an annular sealing groove (31), and an annular sealing ring (32) is fixedly connected to the inner side wall of the annular sealing groove (31). The outer side wall of the annular sealing ring (32) is fitted to the middle of the inner side wall of the mounting port (17).

7. A long-life, corrosion-resistant cast aluminum heater according to claim 1, characterized in that: The inner wall of the wire hole (21) is fixedly connected to an annular sealing sleeve (25), and the inner wall of the annular sealing sleeve (25) is fixedly connected to the outer wall of the insulated wire (22) near the spiral heating wire (19).

8. A long-life, corrosion-resistant cast aluminum heater according to claim 3, characterized in that: The thickness of the anti-corrosion coating (23) is 0.3-0.5 mm.

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