Planar heating module and heating device

Abstract

The utility model discloses a plane heating module and heating device relates to heating device technical field. The plane heating module includes support frame body, heating plate, reflection backboard and outer frame, the heating plate with reflection backboard is established respectively in the opposite side of support frame body, to make support frame body, heating plate with reflection backboard form heating unit, reflection backboard is used for reflecting the heat that heating plate sent, heating unit is installed in support frame body, and support frame body is used for relatively fixed support frame body, heating plate with reflection backboard. Fix heating unit through support frame body and cooperate reflection backboard reflection heat, improve thermal efficiency while simplifying structure, has simple structure, thermal efficiency height and the advantage that is convenient for maintenance.

Description

Technical Field

[0001] This utility model belongs to the technical field of heating devices, and particularly relates to a planar heating module and heating device. Background Technology

[0002] As a type of planar heating device, the core heating element of a planar heating module is a heating plate. Currently, there are many types of heating element carriers on the market, including traditional materials such as metal substrates and mica plates. However, these materials suffer from low thermal efficiency and uneven temperature distribution. Existing planar heating modules generally adopt a multi-layered composite structure, including components such as a heating layer, a heat insulation layer, and a reflective layer, resulting in a complex overall structure and cumbersome assembly processes. Especially in scenarios requiring rapid replacement of the heating plate, the disassembly and maintenance process of existing modules is extremely inconvenient. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a planar heating module and heating device, which addresses the issues of complex structure and cumbersome assembly process of existing planar heating modules.

[0004] To address the aforementioned issues, this utility model provides a planar heating module with the following technical solution: it includes a support frame, a heating plate, a reflective back plate, and an outer frame. The heating plate and the reflective back plate are respectively disposed on opposite sides of the support frame, so that the support frame, the heating plate, and the reflective back plate form a heating unit. The reflective back plate is used to reflect the heat emitted by the heating plate. The heating unit is installed on the support frame, and the support frame is used to relatively fix the support frame, the heating plate, and the reflective back plate.

[0005] Furthermore, this application also proposes that the substrate of the heating plate is a microcrystalline glass plate, a ceramic plate, or a quartz plate.

[0006] Furthermore, this application also proposes that a placement groove is provided on one side of the support frame, the heating plate is placed in the placement groove, and the reflective back plate is installed on the other side of the support frame away from the heating plate.

[0007] Furthermore, this application also proposes that the outer frame includes a panel and a limiting frame, the panel has a through hole, the limiting frame is installed on the panel, the limiting frame is used to limit the heating unit to the panel, and the heat emitted by the heating plate can pass through the through hole.

[0008] Furthermore, this application also proposes that the limiting frame includes a first L-shaped limiting rod and two second L-shaped limiting rods, both of which are mounted on the panel. The two second L-shaped limiting rods are located at both ends of the first L-shaped limiting rod, and the extension direction of the second L-shaped limiting rods is perpendicular to the extension direction of the first L-shaped limiting rod. The heating unit can be inserted between the panel and the L-shaped limiting rods.

[0009] Furthermore, this application also proposes that the planar heating module further includes an end plate, which is detachably connected to two second L-shaped limiting rods to limit the heating unit between the panel and the second L-shaped limiting rods.

[0010] Furthermore, this application also proposes that the end pressure plate is connected to the second L-shaped limiting rod by rivets.

[0011] Furthermore, this application also proposes that the planar heating module further includes a temperature sensor, which is installed on the side of the heating plate near the reflective back plate, and the temperature sensor is used to detect the temperature of the heating plate.

[0012] Furthermore, this application also proposes that both the support frame and the outer frame have cable outlet holes, through which the transmission line of the temperature sensor can pass.

[0013] On the other hand, this utility model embodiment provides a heating device, including the above-mentioned planar heating module.

[0014] The planar heating module and heating device provided in this embodiment of the utility model have at least the following advantages compared with the prior art: The planar heating module includes a support frame, a heating plate, a reflective back plate and an outer frame. The heating unit is fixed by the support frame and the heat is reflected by the reflective back plate, which simplifies the structure and improves the thermal efficiency. It has the advantages of simple structure, high thermal efficiency and easy maintenance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an exploded view of a planar heating module provided in one embodiment of the present invention; Figure 2 This is a bottom view of a planar heating module provided in one embodiment of the present invention; Figure 3 for Figure 2 Sectional view of section AA; Figure 4 This is a left view of a planar heating module provided in one embodiment of the present invention; Figure 5 This is a front view of a planar heating module provided in one embodiment of the present invention.

[0017] The reference numerals in the accompanying drawings are as follows: 100-Planar heating module, 110-Support frame, 120-Heating plate, 130-Reflective back plate, 140-Outer frame, 141-Panel, 142-First L-shaped limiting rod, 143-Second L-shaped limiting rod, 144-Through hole, 150-End pressure plate, 151-Rivet, 152-Cable outlet hole, 160-Temperature sensor. Detailed Implementation

[0018] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] In the description of this utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] In existing technologies, planar heating modules 100, as planar heating devices, have a variety of core heating element carriers, but they generally suffer from complex structures. Traditional heating modules typically employ a multi-layered stacked structure, requiring additional fixing devices for assembly between the heating plate 120 and the reflective layer, resulting in cumbersome installation procedures and limited heat transfer efficiency. For example, in industrial oven applications, the complex assembly structure not only increases maintenance difficulty but also makes components prone to displacement due to thermal stress deformation, leading to uneven heat distribution.

[0022] To address these issues, researchers discovered a trade-off between the heat utilization rate and structural stability of traditional heating modules. When attempting to improve thermal efficiency by increasing the reflective layer area, the assembly difficulty of the multi-layered structure increased exponentially; while simplifying the structure reduced installation complexity, it exacerbated heat loss. Analysis of the heat conduction path revealed that effective vertical heat reflection significantly reduced lateral heat loss, but the positioning accuracy of the reflective layer and the heating plate 120 needed to be addressed. Further research showed that integrating the heating plate 120, reflective layer, and support structure into a single unit would achieve both precise positioning and simplified assembly.

[0023] Therefore, please refer to Figures 1 to 5 This application proposes a planar heating module 100 including a support frame 110, a heating plate 120, a reflective back plate 130, and an outer frame 140. The heating plate 120 and the reflective back plate 130 are respectively disposed on opposite sides of the support frame 110 to form heating units. The support frame 110 is used to fix the heating plate 120 and the reflective back plate 130, and the outer frame 140 limits and fixes the heating units.

[0024] The supporting frame 110 refers to the main frame structure that supports the heating plate 120 and the reflective back plate 130. It can be implemented using a rectangular frame formed by metal stamping or injection molding, and its hollow internal structure reduces heat conduction to non-working areas. The heating plate 120 is the core element that generates heat, and can be implemented using a quartz plate with embedded resistance wires or a ceramic plate with a printed heating coating. Its planar structure ensures uniform heat radiation. The reflective back plate 130 is a plate-shaped component with heat reflection function, and can be implemented using a polished aluminum plate or galvanized steel plate. It is symmetrically distributed with the heating plate 120 to form a directional reflection channel. The outer frame 140 is the outer shell that encloses the heating unit, and can be implemented using a metal frame with a limiting structure. Its through-hole 144 design allows for directional heat output.

[0025] Specifically, the support frame 110 serves as a rigid carrier, connecting both the heating plate 120 and the reflective backplate 130. Both are embedded in the limiting grooves on either side of the support frame 110, forming a self-locking structure. The reflective backplate 130 reflects the heat radiated downwards from the heating plate 120 upwards, creating a bidirectional heating effect. The outer frame 140, through a combination structure of a limiting rod and the panel 141, fixes the heating unit as a whole. The L-shaped bent end of the limiting rod forms an insertion guide groove, allowing the heating unit to slide in along a specific direction for precise positioning. The heat generated by the heating plate 120 radiates outwards through the through-holes 144 of the panel 141, while the reflective backplate 130 continuously reflects the escaping heat back to the working area, forming a closed-loop heat cycle.

[0026] Compared to existing technologies, traditional heating modules require separate installation of the heating plate 120 and reflective layer, with positioning achieved through bolt fastening. This solution, however, achieves tool-free assembly through an integrated support frame 110 structure. In existing technologies, the distance between the reflective layer and the heating plate 120 needs adjustment using shims; this solution directly controls the reflection distance using the thickness of the support frame 110, eliminating assembly errors. Existing outer frames 140 typically employ a fully enclosed structure that hinders heat transfer; this solution, through the design of through holes 144 combined with a limiting structure, optimizes the heat flow path while ensuring structural strength.

[0027] Through the above technical solution, this application achieves integrated assembly of the heating unit, eliminating the positioning deviation problem caused by multi-layer structures. The symmetrical layout of the reflective backplate 130 and the heating plate 120 improves heat utilization by approximately 40%, and the limiting structure of the outer frame 140 reduces module installation time to one-third of the traditional method. The support frame 110, as a rigid carrier, effectively resists thermal stress deformation, ensuring structural stability under long-term use. The design of the heating unit being detachable as a whole significantly reduces maintenance difficulty and is suitable for scenarios such as food processing equipment that require frequent cleaning.

[0028] This application further proposes that the substrate of the heating plate 120 be a microcrystalline glass plate, a ceramic plate, or a quartz plate to enhance the impact resistance of the heating plate 120.

[0029] Among them, microcrystalline glass plate refers to inorganic non-metallic material composed of tiny crystals. Specifically, it can be realized by using a high-temperature sintering process to prepare microcrystalline glass substrate. It has the characteristics of high temperature resistance and low thermal expansion coefficient, and is suitable for heating scenarios that need to withstand repeated thermal shocks.

[0030] Among them, ceramic plates refer to sintered bodies with alumina or aluminum nitride as the main components. Specifically, they can be achieved by isostatic pressing followed by high-temperature sintering. They have high thermal conductivity and insulation properties, and are suitable for heating scenarios that require uniform heat transfer and avoid leakage.

[0031] Quartz plates refer to amorphous materials with silicon dioxide as the main component. Specifically, they can be prepared by fused silica through a mold forming process. They have a low coefficient of thermal expansion and chemical stability, making them suitable for heating scenarios that require rapid heat transfer and avoid thermal deformation.

[0032] Specifically, the heating plate 120, as the core heating element of the planar heating module 100, has its substrate selection directly affecting heat conduction efficiency and structural reliability. The microcrystalline glass plate maintains dimensional stability at high temperatures through its crystalline structure, avoiding structural deformation due to thermal expansion; the ceramic plate achieves rapid heat dissipation through uniform grain distribution, reducing the risk of localized overheating; and the quartz plate shortens the heating response time through its low heat capacity, while also reducing heat retention in the substrate. During assembly, the matching of the thermal expansion coefficients of the substrate and the support frame 110 is optimized, thereby reducing interfacial stress.

[0033] Compared to existing technologies, traditional planar heating modules, which often use metal or ordinary glass substrates, suffer from uneven heat distribution, insufficient insulation, or high-temperature deformation. Microcrystalline glass plates overcome the brittleness of ordinary glass through optimized crystal structure; ceramic plates offer significant advantages in insulation and corrosion resistance compared to metal substrates; and quartz plates exhibit superior thermal stability and chemical inertness compared to traditional amorphous glass substrates.

[0034] Through the above technical solution, this application solves the technical problems of thermal stress concentration and low heat transfer efficiency of the substrate of the planar heating module 100, realizes efficient thermal coupling between the substrate and the heating element, and improves the structural stability and service life of the heating module in high temperature environment.

[0035] This application further proposes that a placement groove is provided on one side of the support frame 110, the heating plate 120 is placed in the placement groove, and the reflective back plate 130 is installed on the other side of the support frame 110 away from the heating plate 120.

[0036] The placement groove refers to a recessed area machined onto the surface of the support frame 110, which can be achieved through mechanical stamping or injection molding, and is used to accommodate and fix the edge of the heating plate 120. The limiting placement refers to the positional constraint of the heating plate 120 by the sidewall of the placement groove, which can be achieved using a snap-fit ​​structure or raised limiting blocks to prevent the heating plate 120 from shifting during installation. The reflective backplate 130 being installed on the other side means that the reflective backplate 130 is connected to the support frame 110 by fasteners, which can be achieved using bolts or snap-fit ​​structures to ensure a stable relative position between the reflective backplate 130 and the heating plate 120.

[0037] Specifically, the support frame 110 has a placement groove machined on one side, allowing the heating plate 120 to be directly embedded into the groove for positioning without the need for additional fasteners. When the reflective backplate 130 is installed on the other side of the support frame 110, its mounting surface is parallel to the plane where the heating plate 120 is located, ensuring that the heat reflection direction is concentrated. During assembly, the heating plate 120 is laterally positioned by the sidewall constraint of the placement groove, and the reflective backplate 130 is longitudinally fixed by fasteners, forming a stable clamping structure.

[0038] Compared with existing technologies, traditional planar heating modules 100 typically require a separate positioning bracket or multiple sets of screws to fix the heating plate 120, resulting in cumbersome assembly steps and structural redundancy. This solution integrates the positioning of the heating plate 120 and the installation function of the reflective backplate 130 into a single component by integrating a placement slot into the support frame 110, thereby reducing the number of parts required for assembly.

[0039] Through the above technical solution, this application can simplify the assembly process of the heating plate 120 and the reflective back plate 130, reduce the positioning error caused by the cooperation of multiple parts, and avoid the displacement problem of the heating plate 120 caused by loose screws, thereby improving the overall structural stability of the heating module.

[0040] Please see Figures 1 to 5 This application further proposes an outer frame 140 including a panel 141 and a limiting frame. The panel 141 has a through hole 144, and the limiting frame is installed on the panel 141. The limiting frame is used to limit the heating unit to the panel 141, and the heat emitted by the heating plate 120 can pass through the through hole 144.

[0041] Among them, panel 141 refers to the plate-like structure covering the surface of the heating unit, which can be made of metal plate or high-temperature resistant plastic plate, and is used to support and fix the position of the heating unit.

[0042] The through hole 144 refers to the opening structure that penetrates the panel 141. Specifically, it can be implemented using circular, square, or mesh-like holes to allow the heat generated by the heating plate 120 to be transferred outward.

[0043] The limiting frame refers to the enclosure structure fixed to the edge of the panel 141, which can be implemented using L-shaped or U-shaped metal profiles to limit the movement range of the heating unit on the panel 141.

[0044] Specifically, panel 141 forms a heat transfer channel through through-hole 144, allowing heat generated by the heating unit to diffuse outwards directly through the through-hole 144. A limiting frame is installed on the edge of panel 141, using its enclosure structure to hold the heating unit in place in the central area of ​​panel 141, preventing horizontal displacement. During installation, the heating unit is placed within the space formed by panel 141 and the limiting frame. The gap between the limiting frame and panel 141 can be adjusted according to the thickness of the heating unit to ensure stable fixation.

[0045] Compared to existing technologies, the outer frame 140 of a traditional planar heating module 100 typically adopts an overall enclosed structure, resulting in heat accumulation inside that is difficult to dissipate effectively. Furthermore, the lack of a positioning device for the heating unit makes it prone to displacement due to vibration or external forces. This solution improves heat dissipation efficiency through the design of through holes 144 and achieves rapid positioning and installation of the heating unit through a limiting frame, avoiding the use of complex fasteners.

[0046] Through the above technical solution, this application solves the problems of low heat dissipation efficiency and unstable installation of the planar heating module 100. The through hole 144 structure promotes rapid heat dissipation, and the limiting frame simplifies the assembly process of the heating unit while ensuring that it remains in a fixed position during operation.

[0047] Please see Figures 1 to 5 This application further proposes a limiting frame including a first L-shaped limiting rod 142 and two second L-shaped limiting rods 143. The first L-shaped limiting rod 142 and the second L-shaped limiting rods 143 are both installed on the panel 141. The two second L-shaped limiting rods 143 are respectively located at both ends of the first L-shaped limiting rod 142, and the extension direction of the second L-shaped limiting rods 143 is perpendicular to the extension direction of the first L-shaped limiting rod 142. The heating unit can be inserted between the panel 141 and the L-shaped limiting rods.

[0048] The L-shaped limiting rod refers to a metal or plastic rod with a right-angle bend structure, specifically made of stainless steel by stamping. Its right-angled sides contact the panel 141 and the heating unit respectively to form limiting constraints. The perpendicular extension direction means that the long axis of the two second L-shaped limiting rods 143 intersects the long axis of the first L-shaped limiting rod 142 at a 90-degree angle. This can be achieved by adjusting the installation angle, forming mutually perpendicular limiting boundaries in the plane. "Inserted between the panel 141 and the L-shaped limiting rods" means that the heating unit is inserted into the space formed by the surface of the panel 141 and the inner surface of the L-shaped limiting rods through translational movement. This can be achieved by matching the thickness of the heating unit with a pre-reserved gap, thus clamping and fixing the heating unit.

[0049] Specifically, the surface of panel 141 serves as a supporting reference surface. A first L-shaped limiting rod 142 is installed longitudinally along the edge of panel 141, and two second L-shaped limiting rods 143 are fixed to the left and right ends of the first L-shaped limiting rod 142 and extend laterally. The three together form a U-shaped limiting area. The heating unit is pushed into this area in a direction perpendicular to panel 141, with its sides contacting the inner wall of the first L-shaped limiting rod 142 and its ends abutting the inner walls of the two second L-shaped limiting rods 143, thus being constrained simultaneously in both the longitudinal and lateral directions.

[0050] Compared with existing technologies, traditional planar heating modules 100 use multiple sets of independent buckles or screws to fix the heating units, requiring individual adjustment of the locking position. In contrast, this solution uses three L-shaped limiting rods to form a standardized plug-in structure, which can complete the positioning and fixing with only a single push-in action, significantly reducing assembly steps.

[0051] Through the above technical solution, this application realizes the rapid installation and disassembly of the heating unit, avoiding the accumulation of assembly errors caused by the traditional multi-part fixing method. At the same time, the vertical layout of the L-shaped limiting rod effectively disperses the stress generated by the thermal expansion of the heating unit and prevents structural deformation.

[0052] Please see Figures 1 to 5 This application further proposes that the planar heating module 100 also includes an end pressure plate 150, which is detachably connected to two second L-shaped limiting rods 143 to limit the heating unit between the panel 141 and the second L-shaped limiting rods 143.

[0053] The end pressure plate 150 refers to a plate-shaped limiting component located at the edge of the heating unit. It can be made of metal or high-temperature resistant plastic. Its function is to form a detachable clamping structure through cooperation with the second L-shaped limiting rod 143, enabling rapid fixing and release of the heating unit. Detachable connection refers to a component assembly relationship achieved through non-permanent fixing methods, specifically using threaded fasteners, snap-fit, or plug-in structures. Its purpose is to allow maintenance or replacement of the heating unit without damaging the overall structure.

[0054] Specifically, when installing the heating unit, it is first embedded into the space formed by the panel 141 and the L-shaped limiting rod. Then, the end pressure plate 150 is moved to the end position of the two second L-shaped limiting rods 143 and fixed by fasteners or snap-fit ​​structures. During this process, the closed frame formed by the end pressure plate 150 and the second L-shaped limiting rods 143 effectively prevents the heating unit from shifting under vibration or thermal expansion conditions. When maintenance is required, the heating unit can be removed simply by disconnecting the end pressure plate 150, without disassembling the entire outer frame 140 structure.

[0055] Compared to existing technologies, traditional heating modules typically use welding or adhesive to fix the heating unit, requiring destructive removal of the external structure for maintenance. This solution, however, utilizes a detachable end plate 150 design, achieving modular assembly and disassembly while maintaining structural stability, significantly reducing the complexity and time cost of maintenance operations.

[0056] Through the above technical solution, this application effectively solves the technical problem of difficult maintenance of the planar heating module 100. Through the detachable cooperation structure of the end pressure plate 150 and the second L-shaped limiting rod 143, the positioning reliability of the heating unit under high temperature conditions is ensured, and quick and non-destructive disassembly and assembly are realized, thereby improving equipment maintenance efficiency and extending the service life of the components.

[0057] Please see Figures 1 to 5 This application further proposes that the end pressure plate 150 is connected to the second L-shaped limiting rod 143 by rivets 151.

[0058] The end pressure plate 150 is a plate-shaped component covering the edge of the heating unit. It can be made of metal or high-temperature resistant composite material and is used to apply pressure to constrain the heating unit, preventing it from shifting or loosening during operation. The rivet 151 is a fastener with a head and a rod. It can be made of copper or steel and is used to fix the end pressure plate 150 to the second L-shaped limiting rod 143 through mechanical deformation, ensuring structural stability while facilitating disassembly and maintenance.

[0059] Specifically, the end plate 150 is configured to span the ends of the two second L-shaped limiting rods 143, and a detachable connection is formed by rivets 151 passing through the corresponding holes of the end plate 150 and the limiting rods. When it is necessary to install or replace the heating unit, simply release the fixing of the rivets 151 to remove the end plate 150, thereby releasing the limitation on the heating unit; after the operation is completed, reassembling the rivets 151 restores the constraint on the heating unit. This connection method avoids the limitations of traditional welding or gluing processes on maintenance operations.

[0060] Compared to existing technologies, the current planar heating module 100 typically uses bolts to fix the end pressure plate 150, which requires frequent tightening of the nut, leading to thread wear. In contrast, the rivet 151 connection can be assembled with a single stamping, reducing part wear during maintenance. Furthermore, the cylindrical rod of the rivet 151 has stronger resistance to loosening than bolts under vibration.

[0061] Through the above technical solution, this application achieves rapid disassembly and maintenance of the heating unit while ensuring the structural stability of the heating module under high-temperature conditions, avoiding the problem of displacement or poor contact of the heating plate 120 due to fastener failure, and extending the service life of the equipment.

[0062] Please see Figures 1 to 5This application further proposes that the planar heating module 100 also includes a temperature sensor 160, which is installed on the side of the heating plate 120 near the reflective back plate 130. The temperature sensor 160 is used to detect the temperature of the heating plate 120. Both the support frame 110 and the outer frame 140 are provided with wire outlet holes 152, through which the transmission line of the temperature sensor 160 can pass.

[0063] The temperature sensor 160 is a detection element used to monitor the temperature change of the heating plate 120 in real time. It can be implemented using a thermocouple or a thermistor. Its installation position is limited between the heating plate 120 and the reflective back plate 130 to avoid interference from the external environment on the measurement accuracy. The wire outlet hole 152 is a channel structure through which the signal line of the temperature sensor 160 passes. It can be implemented in the form of a circular or rectangular hole. Its opening position must correspond to the installation area of ​​the temperature sensor 160 so that the transmission line can be led out along a preset path.

[0064] Specifically, the temperature sensor 160 is fixed to the back of the heating plate 120, with its sensing end in contact with the surface of the heating plate 120. When the heating plate 120 is powered on and generates heat, the temperature change data is transmitted to the external control system in real time via a transmission line. The enclosed space formed by the reflective backplate 130 and the support frame 110 provides a stable detection environment for the sensor, reducing temperature fluctuations caused by airflow disturbances. The transmission line extends outward through the through-hole 152 between the support frame 110 and the outer frame 140. The wiring path is pre-planned to avoid bending or compression of the wires during assembly.

[0065] Compared to existing technologies, traditional planar heating devices typically rely on external temperature probes for indirect temperature measurement, which suffers from response lag and measurement errors. This solution integrates the temperature sensor 160 directly onto the back of the heating plate 120, forming a heat-reflecting cavity through a reflective backplate 130, thus protecting the sensor and improving detection sensitivity. In existing technologies, sensor wiring often uses exposed traces, which are prone to interference or damage. The through-hole design 152, however, allows for a more organized wiring path and improves the utilization of internal space.

[0066] Through the above technical solution, this application achieves precise monitoring of the operating temperature of the heating plate 120, effectively preventing component damage caused by localized overheating. Simultaneously, it optimizes the sensor circuit layout, avoiding cluttered wiring that could affect module assembly stability. Real-time temperature data feedback provides a reliable basis for heating power adjustment, ensuring the controllability and safety of the heating process.

[0067] Please see Figures 1 to 5 This application further proposes that both the support frame 110 and the outer frame 140 are provided with cable outlet holes 152, through which the transmission line of the temperature sensor 160 can pass.

[0068] The cable outlet hole 152 refers to the hole-like structure provided on the support frame 110 and the outer frame 140. It can be formed by mechanical stamping or laser cutting and is used to provide a path for the signal line of the temperature sensor 160 to pass through. By providing the cable outlet hole 152, the messy arrangement of the wires inside the equipment can be avoided, and signal interference caused by wire bending or compression can be reduced.

[0069] The transmission line refers to the wire connecting the temperature sensor 160 to the external control module. Specifically, it can be a metal wire wrapped with high-temperature resistant insulating material, such as a copper core wire coated with polytetrafluoroethylene (PTFE). After passing through the outlet hole 152, the transmission line can be directly connected to the external circuit, simplifying the internal wiring complexity.

[0070] Specifically, the temperature sensor 160 is mounted on the side of the heating plate 120 near the reflective back plate 130. Its signal line extends along the gap between the support frame 110 and the outer frame 140, and exits to the outside through the wire outlet holes 152 of the support frame 110 and the outer frame 140. The diameter of the wire outlet hole 152 can be adjusted according to the outer diameter of the transmission line, for example, it can be set to be 1 mm to 2 mm larger than the outer diameter of the transmission line, which ensures smooth wire threading and avoids heat loss due to excessive gap. The wire outlet holes 152 of the support frame 110 and the outer frame 140 are aligned in space to ensure that the transmission line exits in a straight path and reduces bending losses.

[0071] In some specific embodiments, an insulating sleeve, such as made of ceramic or silicone, can be added to the inner wall of the outlet hole 152 to isolate the transmission line from direct contact with the metal frame and prevent the risk of short circuit. After the transmission line exits, it can be fixed to the outside of the outer frame 140 by clips or cable ties to prevent the line from falling off due to vibration.

[0072] Compared to existing technologies, the temperature sensor 160 circuit of the existing planar heating module 100 is usually directly exposed inside the device or led out through additional openings. This makes the circuit prone to aging and breakage due to high temperatures or mechanical movement, and the wiring path needs to be handled separately during installation. This solution, through the coordinated opening design of the support frame 110 and the outer frame 140, allows the transmission line to stably pass through along a preset path without the need for additional fixing structures, while reducing the probability of contact between the circuit and the heat-generating components.

[0073] Through the above technical solution, this application solves the problem of arranging the temperature sensor 160 lines in complex structures, avoids the problem of unstable signal transmission caused by line bending, high temperature exposure or mechanical interference, and improves the reliability of temperature detection and the overall safety of the equipment.

[0074] This application further proposes a heating device including a support frame 110, a heating plate 120, a reflective back plate 130, and an outer frame 140. The heating plate 120 and the reflective back plate 130 are respectively disposed on opposite sides of the support frame 110, so that the support frame 110, the heating plate 120, and the reflective back plate 130 form a heating unit. The reflective back plate 130 is used to reflect the heat emitted by the heating plate 120. The heating unit is installed on the support frame 110, and the support frame 110 is used to fix the support frame 110, the heating plate 120, and the reflective back plate 130 relative to each other.

[0075] Among them, the support frame 110 refers to the frame structure used to support the heating plate 120 and the reflective back plate 130. Specifically, it can be made of metal or high-temperature resistant plastic and is fixed by mechanical connection or snap-fit ​​structure. Its function is to maintain the overall stability of the heating unit.

[0076] The heating plate 120 refers to the core component that generates heat. Specifically, it can use a microcrystalline glass plate, ceramic plate or quartz plate as the substrate, and achieve the heating function through resistance wire or conductive coating. Its function is to convert electrical energy into heat energy and diffuse it evenly.

[0077] The reflective backplate 130 refers to a plate material with heat reflection function. Specifically, it can be made of polished aluminum plate or metal-plated composite material. It can transfer heat in a directional manner through the principle of mirror reflection, and its function is to reduce heat loss and improve thermal efficiency.

[0078] The outer frame 140 refers to the external structure that wraps around the heating unit. Specifically, it can be a combination of panel 141 and limit frame. Through holes 144, heat can be transferred outward. Its function is to protect the internal components and achieve modular installation.

[0079] Specifically, the heating plate 120 and the reflective backplate 130 are fixed to both sides of the support frame 110 to form a heating unit. The support frame 110 integrates the three components into a whole through a mechanical structure. The reflective backplate 130 reflects the heat generated by the heating plate 120 to the target direction. The outer frame 140 cooperates with the panel 141 through a limiting frame to limit and fix the heating unit. Heat diffuses outward through the through hole 144 of the panel 141. The support frame 110 and the outer frame 140 together constitute a stable mounting structure to ensure that the heating unit remains stable in a high-temperature environment.

[0080] Compared with existing technologies, existing planar heating modules 100 typically employ multi-layered independent component stacking, resulting in complex structures and high heat loss. This solution integrates the heating unit into a single module through the support frame 110, simplifying the assembly process. The cooperation between the reflective backplate 130 and the outer frame 140 further optimizes the heat transfer path and reduces heat loss in non-target directions.

[0081] Through the above technical solution, this application achieves structural simplification and thermal efficiency improvement of the heating device. The cooperation between the support frame 110 and the outer frame 140 makes the heating unit easy to install and maintain. The reflective back plate 130's characteristic of directional heat reflection reduces energy waste and is suitable for scenarios that require stable heating and have limited space.

[0082] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A planar heating module, characterized in that, The device includes a support frame, a heating plate, a reflective back plate, and an outer frame. The heating plate and the reflective back plate are respectively disposed on opposite sides of the support frame, so that the support frame, the heating plate, and the reflective back plate form a heating unit. The reflective back plate is used to reflect the heat emitted by the heating plate. The heating unit is installed on the support frame, and the support frame is used to fix the support frame, the heating plate, and the reflective back plate relative to each other.

2. The planar heating module according to claim 1, characterized in that, The substrate of the heating plate is a microcrystalline glass plate, a ceramic plate, or a quartz plate.

3. The planar heating module according to claim 1, characterized in that, A placement groove is provided on one side of the support frame, the heating plate is placed in the placement groove, and the reflective back plate is installed on the other side of the support frame away from the heating plate.

4. The planar heating module according to claim 1, characterized in that, The outer frame includes a panel and a limiting frame. The panel has a through hole, and the limiting frame is installed on the panel. The limiting frame is used to limit the heating unit to the panel, and the heat emitted by the heating plate can pass through the through hole.

5. The planar heating module according to claim 4, characterized in that, The limiting frame includes a first L-shaped limiting rod and two second L-shaped limiting rods. The first L-shaped limiting rod and the second L-shaped limiting rods are both installed on the panel. The two second L-shaped limiting rods are located at both ends of the first L-shaped limiting rod, and the extension direction of the second L-shaped limiting rods is perpendicular to the extension direction of the first L-shaped limiting rod. The heating unit can be inserted between the panel and the L-shaped limiting rods.

6. The planar heating module according to claim 5, characterized in that, The planar heating module further includes an end plate, which is detachably connected to two second L-shaped limiting rods to limit the heating unit between the panel and the L-shaped limiting rods.

7. The planar heating module according to claim 6, characterized in that, The end plate is connected to the second L-shaped limiting rod by rivets.

8. The planar heating module according to claim 1, characterized in that, The planar heating module also includes a temperature sensor, which is installed on the side of the heating plate near the reflective back plate and is used to detect the temperature of the heating plate.

9. The planar heating module according to claim 8, characterized in that, Both the support frame and the outer frame are provided with cable outlet holes, through which the transmission line of the temperature sensor can pass.

10. A heating device, characterized in that, Includes the planar heating module as described in any one of claims 1 to 9.

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