A dual pass embedded temperature controlled heating tube assembly

Abstract

The utility model discloses a kind of double-path embedded temperature control's heating pipe assemblies, belong to heating pipe technical field, including heating core and fluid pipeline, the heating core includes support tube, electric heating element wound on the outer surface of support tube, and the fixed clamp of fixed electric heating element two ends, the heating core surface is directly fastened at least one thermal protector by clamp;The fluid pipeline includes first pipeline and second pipeline, the first pipeline includes long U-shaped elbow pipe, short U-shaped elbow pipe and first straight pipe passing through the hollow portion of support tube, the second pipeline includes second straight pipe arranged in parallel with heating core;The heating core and fluid pipeline are externally provided with main body shell, the main body shell is equipped with heat dissipation groove and positioning rib, and the main body shell two ends are equipped with end cap.The utility model provides a kind of heating pipe assembly with compact structure, safe and reliable, flexible application and high heating efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heating tube technology, and in particular to a heating tube assembly with dual-channel embedded temperature control. Background Technology

[0002] In fields such as medical diagnostics, biochemical analysis, food processing, and precision industrial heating, precise, rapid, and safe heating of fluids is a common technical requirement. Existing fluid heating components typically consist of heating elements, fluid pipes, and temperature control systems.

[0003] Traditional heaters are mostly single-channel designs, and their structure and fluid path cannot be changed once determined. When users need to process two fluids with different properties simultaneously, or switch between different operating conditions, such as requiring high flow rates or high temperature rise, multiple different heating devices are often required, increasing the complexity and cost of the system. Furthermore, in conventional heating components, temperature sensors are usually placed at the outlet of the fluid pipe or on the surface of the main casing. This indirect temperature measurement method has a significant temperature delay. When abnormal operating conditions such as liquid dry burning, low flow rate, or blockage occur, the temperature of the heating core will rise sharply and instantaneously. The external sensor needs to wait for the heat to be conducted to its location before it can respond. This delay may cause the heating core itself to burn out due to overheating before the temperature control system can react, or even cause irreversible damage to the entire device, posing a serious safety hazard. Utility Model Content

[0004] The purpose of this utility model is to provide a heating tube assembly that is compact, safe, reliable, flexible in application, and highly efficient in heating.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a dual-channel embedded temperature control heating tube assembly, comprising a heating core and a fluid pipe, wherein the heating core comprises a support tube, an electric heating element wound around the outer surface of the support tube, and a fixing clamp for fixing both ends of the electric heating element, and at least one thermal protector is directly fastened to the surface of the heating core by the clamp.

[0006] The fluid conduit includes a first conduit and a second conduit. The first conduit includes a long U-shaped bend, a short U-shaped bend, and a first straight pipe passing through the hollow part of the support pipe. The second conduit includes a second straight pipe arranged parallel to the heating core.

[0007] The heating core and fluid pipe are surrounded by a main shell, which has heat dissipation grooves and positioning ribs, and end caps at both ends.

[0008] As a further description of the above technical solution: the fixing clamp includes a clamping ring for clamping the end of the heating element, a locking nut, a bolt, and a stack of plates.

[0009] As a further description of the above technical solution: the thermal protector is a bimetallic strip temperature control switch or a thermal fuse, which cuts off the power supply circuit of the heating element when the temperature of the heating core exceeds a safety threshold.

[0010] As a further description of the above technical solution: the first pipe and the second pipe can be configured as follows:

[0011] Heating different fluids separately;

[0012] The outlet of the first pipe is connected to the inlet of the second pipe to extend the heating path;

[0013] The inlet and outlet merge to increase fluid throughput.

[0014] As a further description of the above technical solution: the main body shell is made of aluminum alloy extrusion molding, and the internal grooves and positioning ribs keep the heating core and the fluid pipe at a preset distance to optimize heat transfer efficiency.

[0015] As a further description of the above technical solution: the support tube is made of ceramic, quartz glass or high-temperature resistant insulating material.

[0016] As a further description of the above technical solution: the heating element is a resistance wire or a resistance strip.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0018] 1. The thermal protector is directly fastened to the surface of the heating core, so that its temperature sensing surface is in close contact with the heating element. This eliminates the heat conduction delay caused by traditional external temperature measurement, and achieves fast and accurate overheat protection. This greatly improves the safety level and service life of the product and effectively prevents equipment damage caused by accidental overheating.

[0019] 2. It can simultaneously heat two different media independently, or connect two pipelines in series through external pipelines to form an ultra-long heating stroke. It can also merge the inlet and outlet of the two pipelines to multiply the fluid handling capacity, adapt to the heating demand of large flow rates, and enhance the versatility of the product. Attached Figure Description

[0020] Figure 1 A perspective view of the present invention is shown;

[0021] Figure 2 A perspective view of the heating core of this utility model is shown;

[0022] Figure 3 A perspective view of the first and second pipes of this utility model is shown;

[0023] Figure 4 An exploded view of the first and second pipes of this utility model is shown;

[0024] Figure 5 A perspective view of the heating core and thermal protector of this utility model is shown;

[0025] Figure 6 A perspective view of the fixing clamp of this utility model is shown;

[0026] Figure 7 A perspective view of the main body shell of this utility model is shown;

[0027] Figure 8 A perspective view of the end cap of this utility model is shown.

[0028] Legend:

[0029] 10. Support tube; 11. Heating element; 12. Clamping ring; 13. Nut; 14. Bolt; 15. Laminated plate; 16. Thermal protector; 17. Long U-shaped bend; 18. Short U-shaped bend; 19. First straight tube; 20. Second straight tube; 21. Main body shell; 211. Positioning rib; 212. Heat dissipation groove; 22. End cap. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-8 This utility model provides a technical solution: a dual-channel embedded temperature control heating tube assembly, including a heating core, which is responsible for generating and conducting heat. The heating core includes a support tube 10, an electric heating element 11, and a fixing clamp.

[0032] The support tube 10 is usually made of ceramic, quartz glass or high-temperature resistant insulating material, serving as the skeleton of the heating element 11 and providing stable mechanical support and electrical insulation.

[0033] The heating element 11 is made of resistance wire or resistance strip. In this embodiment, the heating element 11 is processed into a corrugated (or spiral) shape and tightly wound on the outer surface of the support tube 10. This corrugated structure significantly increases the surface area of ​​the heating element 11 in contact with the outside world. Compared with a straight resistance wire, its heat dissipation area is larger, which can transfer the generated heat to the surrounding fluid pipes and the main body shell 21 more efficiently.

[0034] The fixing clamp is used to fix both ends of the heating element 11 to the support tube 10. The fixing clamp includes a clamping ring 12 for clamping the ends of the heating element 11, a nut 13 and a bolt 14 for locking, and a stacked plate 15.

[0035] To enable proactive safety monitoring of the heating process, this component is equipped with an embedded temperature control unit, which includes at least one thermal protector 16. In this embodiment, there are two thermal protectors 16. The thermal protectors 16 (such as bimetallic temperature control switches or thermal fuses) are directly fastened to the surface of the heating core by special clamps, so that their temperature sensing surfaces are in close contact with the heating element 11.

[0036] This contact method allows the temperature control probe to directly sense the heat source itself, avoiding delays and errors caused by medium conduction, thus achieving the fastest and most accurate temperature response. When the temperature of the heating core rises sharply and reaches the preset safety threshold due to low fluid flow, no fluid, or other abnormal conditions, the thermal protector 16 will activate instantly, cutting off the power supply circuit of the heating element 11 to stop heating, effectively preventing damage to the component itself and related equipment caused by overheating. After the temperature drops to a safe range, the thermal protector 16 will automatically reset or be manually reset according to its type.

[0037] This component includes two physically independent fluid conduits, namely the first conduit and the second conduit.

[0038] The first pipe has a relatively complex path to increase the heat exchange stroke. Specifically, the first pipe consists of a long U-shaped bend 17, a short U-shaped bend 18, and a first straight pipe 19 connected in series. The first straight pipe 19 passes through the hollow part of the central support pipe 10. The fluid enters from one end of the long U-shaped bend 17, flows through the entire pipe in sequence, and finally flows out from the other end of the first straight pipe 19. The second pipe is a simple second straight pipe 20, which is arranged parallel to the heating core.

[0039] This dual-path design offers great flexibility, allowing users to choose to use it independently to heat two different fluids, reagents, or gases simultaneously without interference; it also allows the outlet of the first pipe to be connected to the inlet of the second pipe via an external pipeline, forming an extended heating path suitable for scenarios requiring higher temperature rise or longer heating time; and it also allows the inlets and outlets of the two pipes to be combined to increase the total fluid throughput.

[0040] These pipes are positioned within the recesses of the main housing 21, maintaining a specific distance from the heating core to ensure stable efficiency in receiving its radiative and convective heat transfer.

[0041] The main shell 21 is the structural framework and main heat transfer medium of the entire component. Preferably, the main shell 21 is made of a metal material with good thermal conductivity, such as aluminum alloy. The main shell 21 is integrally formed by extrusion process. The shell is composed of two interlocking half shells. Its internal structure is designed and machined with a central groove for accommodating and positioning the heating core, as well as side grooves and positioning ribs 211 for fixing the two fluid pipes. These structures ensure that all internal core components have a precise and stable relative position after assembly, thereby ensuring the consistency of heat transfer efficiency. Multiple heat dissipation grooves 212 are also designed on the outer surface of the shell to help dissipate excess heat of the component.

[0042] The fixed end cap 22 is made of high-temperature resistant engineering plastic or die-cast metal. The end cap 22 is designed to match the contours of both ends of the main body shell 21. It has openings corresponding to the ends of the heating core and the two fluid pipes and slots for fixing. During assembly, the end cap 22 slides in and engages with both ends of the main body shell 21, tightly binding the two half shells together and sealing the internal cavity.

[0043] During installation, take one half-shell and place the heating core with the pre-installed thermal protector 16 in the central groove in the middle of the shell. Place the first pipe and the second pipe between the corresponding grooves and positioning ribs 212 on both sides of the heating core. Cover with the other half-shell and fasten it to the first half-shell to completely wrap and fix all internal components. Slide the two fixed end caps 22 into the two ends of the main shell 21 and lock them in place. The slot structure on the end caps 22 will engage with the ends of the main shell 21 and the internal pipes, thereby fastening the entire assembly into a stable and reliable whole.

[0044] When in operation, an external power supply is connected to the heating element 11, and current flows through it, generating heat. The heat generated by the heating element 11 is efficiently transferred to the surface of the surrounding fluid pipes and the inner wall of the main body shell 21, mainly in the form of thermal radiation and air convection. After the main body shell 21 absorbs the heat, it then conducts the heat evenly to the fluid pipes in contact with it.

[0045] The fluid that needs to be heated is injected from the external piping system and flows into the first and second pipes respectively. As the fluid flows in the pipes, it continuously absorbs the heat transferred from the pipe walls, causing its own temperature to rise. Finally, it flows out from the pipe outlet to supply subsequent processes.

[0046] Throughout the operation, the thermal protector 16 of the embedded temperature control unit monitors the temperature of the heating core surface in real time. Once the temperature exceeds the preset safety value, the thermal protector 16 immediately activates, disconnects the heating circuit, and stops heating to achieve overheat protection.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

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