A heating element and electronic hookah

Abstract

This application discloses a heating element and an electronic hookah. The heating element includes a protective cover and a heating component. The protective cover includes a receiving area and a non-receiving area. The receiving area corresponds in shape to the heating component, and the heating component is disposed inside the protective cover corresponding to the receiving area. The non-receiving area has a plurality of air vents. By placing the heating component within the receiving area of ​​the protective cover, the heating component can be fully surrounded and protected, effectively blocking oil stains, condensate corrosion, and external force damage. The air vents are evenly distributed in the non-receiving area, which ensures smooth ventilation and achieves a reasonable distribution of sealing protection and airflow conduction. The overall structure is more stable and the sealing performance is stronger, greatly improving the durability, safety, and operational stability of the heating element.

Description

Technical Field

[0001] This application relates to the field of electronic cigarette technology, and in particular to a heating element and an electronic hookah. Background Technology

[0002] Currently, most of the heating elements used in e-cigarettes have an exposed structure. During long-term use, the oil and impurities formed by the condensation of e-liquid can easily adhere to and corrode the heating element itself, causing oxidation and corrosion on the surface of the heating element, resulting in a decrease in heating efficiency. In severe cases, it can also cause failure problems such as short circuits and burnout.

[0003] Meanwhile, exposed heating elements lack sealing protection, and oil and condensate can easily seep into critical parts such as temperature sensors and wiring terminals. This can not only corrode conductive components and reduce temperature measurement accuracy, but also cause malfunctions such as poor contact and signal drift, significantly reducing the service life and safety of the heating element.

[0004] In addition, traditional heating elements lack an isolation and protection structure, allowing oil and external media to directly contact the heating area, making it difficult to form a stable and uniform atomized airflow. This easily leads to localized carbon buildup, burnt odor, and the combined effects of corrosion and oil contamination, resulting in frequent maintenance and high replacement costs for the heating element. Consequently, it fails to meet the requirements of electronic cigarettes for high efficiency, stability, and durability. Summary of the Invention

[0005] In view of the aforementioned problems, this application is made to provide a heating element that overcomes or at least partially solves the problems, including a protective shield and a heating assembly; The protective cover includes a receiving area and a non-receiving area. The receiving area corresponds to the shape of the heating component, and the heating component is disposed inside the protective cover corresponding to the receiving area. The non-accommodating area is provided with several air vents.

[0006] Furthermore, the protective cover includes a shield and a heat-conducting plate; The protective cover and the heat-conducting plate are connected to form the receiving area.

[0007] Furthermore, the heating component includes a gasket, a heat insulation sheet, and a heating element body stacked sequentially; wherein, the gasket is used to ensure that the heating element body is in contact with the heat-conducting plate; The heating element body is in contact with the heat-conducting plate.

[0008] Furthermore, the outer surface of the heating element body is provided with a high-temperature resistant insulating coating; A fixing groove is provided on the side of the heating element body, and the power supply connection line of the heating element body is an electrode line, which is fixed in the fixing groove.

[0009] Furthermore, it also includes a temperature sensor, which is fixedly connected to the heat-conducting plate.

[0010] Furthermore, it also includes a fixing member, through which the temperature sensor is mounted on the heat-conducting plate, and the fixing member is attached to the heat-conducting plate.

[0011] Furthermore, the fastener is provided with a mounting groove, and the temperature sensor is embedded in the mounting groove.

[0012] Furthermore, the fixing component is a fixing frame, which is welded and fixed to the surface of the heat-conducting plate; the fixing frame is provided with a fixing plate, which cooperates with the fixing frame to limit and fix the temperature sensor in the internal cavity of the fixing frame.

[0013] Furthermore, a high-temperature resistant insulating film is provided on the side of the heat-conducting plate facing the heating element body.

[0014] The high-temperature resistant insulating film corresponds to the temperature sensor and the heating element body, respectively.

[0015] Furthermore, the protective cover is provided with several protruding holes for leading out connecting wires.

[0016] Furthermore, a heat insulation tube is sleeved on the outside of the electrode wire, and the connecting wire is led out to the outside of the protective cover through the protrusion hole.

[0017] Furthermore, a ceramic sleeve is embedded in the bottom inner side of the protective cover.

[0018] An electronic hookah, wherein the electronic hookah is provided with a heating element as described in any of the above claims.

[0019] This application has the following advantages: In the embodiments of this application, addressing the shortcomings of existing heating elements such as lack of protective structure, susceptibility to oil corrosion, poor airtightness, and short service life, this application proposes a heating element, specifically comprising a protective cover and a heating component. The protective cover includes a receiving area and a non-receiving area, the receiving area corresponding to the shape of the heating component, and the heating component disposed inside the protective cover corresponding to the receiving area. The non-receiving area is provided with several vent holes. By placing the heating component within the receiving area of ​​the protective cover, a fully enclosed protection can be formed for the heating component, effectively blocking oil, condensate corrosion, and external force damage. The evenly distributed vent holes in the non-receiving area ensure smooth ventilation and achieve a reasonable distribution of sealing protection and airflow conduction, resulting in a more stable overall structure, stronger sealing performance, and significantly improved durability, safety, and operational stability of the heating element. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application 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.

[0021] Figure 1 This is an explosion diagram of a heating element provided in one embodiment of this application; Figure 2 This is a schematic diagram of the structure of a heating element's protective cover and ceramic assembly according to an embodiment of this application; Figure 3 This is a schematic diagram of the structure of a gasket assembly for a heating element according to an embodiment of this application; Figure 4 This is a schematic diagram of the structure of a heat insulation sheet assembly for a heating element according to an embodiment of this application; Figure 5 This is a schematic diagram of the structure of a heating element body assembly according to an embodiment of this application; Figure 6 This is a schematic diagram of the structure of a heat-conducting plate assembly of a heating element according to an embodiment of this application; Figure 7 This is a schematic diagram of the structure of a high-temperature resistant insulating film assembly for a heating element according to an embodiment of this application; Figure 8 This is a schematic diagram of the structure of a heating element mounting bracket assembly according to an embodiment of this application; Figure 9 This is a schematic diagram of the structure of a heat insulation tube assembly of a heating element according to an embodiment of this application; Figure 10 This is a schematic diagram of the structure of a temperature sensor assembly for a heating element according to an embodiment of this application; Figure 11 This is a schematic diagram of the structure of a fixing plate assembly for a heating element according to an embodiment of this application; Explanation of reference numerals in the attached drawings: 101, protective cover; 102, heat-conducting plate; 103, gasket; 104, heat insulation sheet; 105, mounting bracket; 106, temperature sensor; 107, high-temperature resistant insulating film; 108, fixing plate; 109, ceramic sleeve; 110, heating element body; 111, motor wire; 112, heat insulation tube. Detailed Implementation

[0022] To make the objectives, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] The inventors discovered through analysis of existing technologies that most of the heating elements used in electronic cigarettes have an exposed structure. During long-term use, the oil and impurities formed by the condensation of e-liquid can easily adhere to and corrode the heating element itself, causing oxidation and corrosion on the surface of the heating element, resulting in a decrease in heating efficiency. In severe cases, it can also cause failures such as short circuits and burnout.

[0024] Reference Figure 1 - Figure 11 The image shows a heating element, including a protective shield and a heating assembly; The protective cover includes a receiving area and a non-receiving area. The receiving area corresponds to the shape of the heating component, and the heating component is disposed inside the protective cover 101 corresponding to the receiving area. The non-receiving area is provided with a plurality of vent holes.

[0025] It should be noted that the protective cover 101 and the heat-conducting plate 102 are assembled together to form the protective cover; the cavity in the middle of the protective cover 101 forms the receiving area, the outline of which matches the overall shape of the heating component. The gasket 103, the heat insulation plate 104, the heating element body 110 and the temperature measuring component can be sequentially housed and positioned inside the cavity. With the sealing effect of the bottom heat-conducting plate 102, a fully enclosed isolation and protection is formed for the core heating and temperature measuring components, effectively preventing e-liquid condensate and external impurities from directly corroding the heating surface and wiring parts, reducing the risk of oxidation and short circuit.

[0026] The annular periphery of the protective cover 101 located outside the accommodating area is the non-accommodating area. Several air passages are evenly opened along the circumference of this area. During operation, external airflow can be evenly drawn into the interior of the protective cover through each air passage, forming a stable and uniform airflow field along the periphery of the heating element body 110. This achieves protective sealing while ensuring stable conduction of atomized airflow, avoiding local carbon buildup and scorching problems caused by airflow turbulence, and improving the temperature uniformity of the heating area through balanced air intake, thus taking into account both the durability of the heating element and the stability of atomization operation.

[0027] In the embodiments of this application, addressing the shortcomings of existing heating elements such as lack of protective structure, susceptibility to oil corrosion, poor airtightness, and short service life, this application proposes a heating element, specifically a protective cover and a heating component. The protective cover includes a receiving area and a non-receiving area. The receiving area corresponds in shape to the heating component, and the heating component is disposed inside the protective cover 101 corresponding to the receiving area. The non-receiving area is provided with several vent holes. By placing the heating component within the receiving area of ​​the protective cover, a complete enclosure protection can be formed for the heating component, effectively blocking oil, condensate corrosion, and external force damage. The evenly distributed vent holes in the non-receiving area ensure smooth ventilation and achieve a reasonable distribution of sealing protection and airflow conduction, resulting in a more stable overall structure, stronger sealing performance, and significantly improved durability, safety, and operational stability of the heating element.

[0028] The following will further describe a heating element in this exemplary embodiment.

[0029] In one embodiment of this application, the protective cover includes a protective cover 101 and a heat-conducting plate 102; The protective cover 101 and the heat-conducting plate 102 are connected to form the receiving area.

[0030] It should be noted that the protective cover 101 is a disc-shaped structure with a recessed receiving cavity in the middle, made of SUS304 stainless steel, which has good structural strength and high temperature resistance. The heat-conducting plate 102 is a plate-shaped component that matches the outer contour of the protective cover 101, also made of SUS304 stainless steel, and has both heat conduction and sealing functions. The protective cover 101 and the heat-conducting plate 102 are fixedly connected by spot welding, and the two enclose an internal sealed receiving area, which can accommodate all core components such as gaskets, heat insulation sheets, heating element bodies, and temperature measuring components. The protective cover 101 can block and protect against external oil and condensate, and the heat-conducting plate 102 can evenly conduct the heat generated by the heating element body to the outside, realizing the integrated integration of heat protection and heat conduction. The overall structure is compact, easy to assemble, and has stable and reliable sealing and protection performance.

[0031] In one embodiment of this application, the heating component includes a gasket 103, a heat insulation sheet 104, and a heating element body 110 stacked sequentially; wherein, the gasket is used to ensure that the heating element body is in contact with the heat-conducting plate; The heating element body 110 is in contact with the heat-conducting plate 102.

[0032] It should be noted that the gasket 103, the heat insulation sheet 104 and the heating element body 110 are arranged in sequence along the axial direction of the accommodating cavity of the protective cover 101. The gasket 103 is attached to the inner wall of the cavity of the protective cover 101, the heat insulation sheet 104 is sandwiched between the gasket 103 and the heating element body 110, and the outer end face of the heating element body 110 is tightly attached to the inner surface of the heat-conducting plate 102.

[0033] The gasket 103 can be made of high-temperature cotton, which can compensate for the assembly gaps of various components, buffer vibration and impact, prevent the heating element body 110 from being damaged by rigid contact with the protective cover 101, and at the same time help block heat loss to one side of the protective cover, thereby improving heat utilization efficiency.

[0034] The heat insulation sheet 104 is made of mica material, which has excellent high temperature resistance, insulation and heat insulation performance. It can not only block the heat generated by the heat-generating body 110 from being conducted to the protective cover 101 and prevent the outer surface temperature of the protective cover from being too high, but also achieve electrical isolation to avoid the risk of electrical conduction between the heat-generating component and the metal protective cover.

[0035] The heating element body 110 is made of iron-chromium-aluminum substrate and has a high-temperature resistant nano-ceramic insulating coating on its surface. Its heating surface is in full contact with the heat-conducting plate 102, which can conduct the heat generated during operation evenly to the outside through the heat-conducting plate 102, ensuring uniform temperature distribution in the heating area and improving the heating atomization effect. At the same time, the stacked assembly structure is compact and has high coaxiality, which is convenient for batch assembly and positioning. The overall structural thickness is controllable, which is suitable for the miniaturized installation requirements of products such as electronic hookahs.

[0036] In one embodiment of this application, the outer surface of the heating element body 110 is provided with a high-temperature resistant insulating coating; A fixing groove is provided on the side of the heating element body 110, and the power supply connection line of the heating element body 110 is an electrode wire 111, which is fixed in the fixing groove.

[0037] It should be noted that the heating element body 110 uses iron-chromium alloy as the heating substrate, and its outer surface is uniformly covered with a high-temperature resistant insulating coating. The high-temperature resistant insulating coating can be set as a black high-temperature resistant nano-ceramic insulating coating. This coating can withstand temperatures up to 600℃ for a long time. It can provide reliable electrical insulation protection for the heating substrate, avoiding the risk of leakage and short circuit during operation. It can also isolate the direct contact between the condensate, oil and dirt and the metal substrate, effectively inhibiting surface oxidation and corrosion, and extending the service life of the heating element. At the same time, the ceramic coating can also optimize the heat radiation uniformity of the heating surface, improve the heat conduction effect, and reduce local temperature differences.

[0038] The heating element body 110 has a fixing groove on its side edge that matches the diameter of the electrode wire 111. The electrode wire 111 uses national standard copper wire, and its outer surface is also coated with a nano-ceramic insulating coating, which has the characteristics of high temperature resistance and aging resistance. The inner core end of the electrode wire 111 is fitted and fixed in the fixing groove by a crimping process, forming a stable electrical conduction and mechanical connection with the heating element body 110. This crimped wiring structure has a simple assembly process and reliable connection strength, which can avoid the problems of solder joint detachment and poor contact under high temperature working environment. At the same time, the lateral limiting effect of the fixing groove can offset the external force when the wire is pulled, prevent the electrode wire from shifting and loosening, and ensure the long-term stability of the power supply connection.

[0039] In one embodiment of this application, a temperature sensor 106 is also included, which is fixedly connected to the heat-conducting plate 102.

[0040] It should be noted that the temperature sensor 106 can be directly bonded to the inner surface of the heat-conducting plate 102 via a fixed connection method such as welding, without the need for additional fixing components. This direct fixing connection reduces intermediate connecting parts, simplifies the overall assembly process, lowers material and assembly costs, and makes the overall structure more streamlined and compact, suitable for smaller installation spaces.

[0041] The temperature sensor's sensing end face is directly attached to and fixed to the surface of the heat-conducting plate. This results in a shorter heat conduction path and lower thermal resistance, enabling a faster and more accurate response to temperature changes on the heat-conducting plate. This further improves the temperature measurement response speed and detection accuracy, facilitating more sensitive temperature control and overheat protection when integrated with external control circuits. Simultaneously, the welded connection provides reliable strength, effectively resisting vibrations and airflow impacts during operation. This prevents the temperature sensor from shifting or loosening, ensuring long-term consistency in the temperature measurement position and enhancing the stability and lifespan of the heating element.

[0042] In one embodiment of this application, a fixing member is also included, wherein the temperature sensor 106 is disposed on the heat-conducting plate 102 by means of the fixing member, and the fixing member is attached to the heat-conducting plate 102.

[0043] It should be noted that the fixing component is specifically a fixing bracket 105, made of SUS304 stainless steel, which is firmly connected to the inner surface of the heat-conducting plate 102 through a welding process. The bottom surface of the fixing bracket 105 is tightly fitted to the heat-conducting plate 102, forming a continuous and stable heat conduction path. The temperature sensor 106 uses a PT100 type platinum resistance temperature sensing element, which features high temperature measurement accuracy, low temperature drift, and good long-term stability. Its installation is limited by the fixing bracket 105, effectively preventing positional displacement caused by assembly vibration and airflow impact, ensuring the consistency of the temperature measurement position.

[0044] Because the heat-conducting plate 102 is in full contact with the heating surface of the heating element body 110, the heat generated by the heating element body can be evenly diffused to the entire heat-conducting plate. The temperature sensor collects the temperature signal through the fixing bracket that is in close contact with the heat-conducting plate, which can accurately reflect the real working temperature of the heating area. This avoids the accelerated aging and insulation risks caused by the temperature sensing element directly contacting the high-temperature heating surface, and can also be used with external control circuits to realize functions such as real-time temperature control and overheat protection, effectively improving the temperature control accuracy and safety of the heating element. At the same time, this integrated temperature measurement structure has a compact layout, does not require additional space in the surrounding area of ​​the housing, and is compatible with the overall stacked internal assembly layout.

[0045] In one embodiment of this application, the fixing member is provided with a mounting groove, and the temperature sensor 106 is embedded in the mounting groove.

[0046] It should be noted that the fixing component is specifically a fixing bracket 105, and the mounting groove is formed in the main body of the fixing bracket 105. The shape of the groove is adapted to the external dimensions of the temperature sensor 106, which can provide a precise installation positioning reference for the temperature sensor 106. After the temperature sensor 106 is embedded in the mounting groove, it can obtain stable positioning in the circumferential and lateral directions, avoiding positional deviation and shaking during assembly and operation, and ensuring the consistency of the temperature sensing position.

[0047] Meanwhile, the bottom of the mounting slot is in close contact with the heat-conducting plate 102, so that the temperature sensor 106 can form a continuous and stable heat conduction path with the heat-conducting plate 102 through the fixing bracket 105, effectively reducing the thermal resistance caused by the assembly gap, improving the response speed and measurement accuracy of temperature detection, and ensuring that the temperature control system can accurately obtain the real working temperature of the heat-generating area.

[0048] Furthermore, the embedded assembly method eliminates the need for additional welding and bonding processes. Pre-fixation can be achieved solely through the limiting effect of the tank, making assembly operations simple and positioning accuracy controllable. This is beneficial for improving assembly efficiency and product consistency in mass production. The tank structure also provides lateral protection for the temperature sensor 106, reducing the direct corrosion of the temperature sensing element by condensate and airflow impurities, and extending the service life of the temperature measuring component.

[0049] In one embodiment of this application, the fixing member is a fixing frame 105, which is welded and fixed to the surface of the heat-conducting plate 102; the fixing frame 105 is provided with a fixing piece 108, which cooperates with the fixing frame 105 to limit and fix the temperature sensor 106 in the internal cavity of the fixing frame 105.

[0050] It should be noted that the mounting bracket 105 is made of SUS304 stainless steel and is fixed to the inner surface of the heat-conducting plate 102 by welding. This ensures high connection strength and a tight fit between the contact surfaces, guaranteeing a continuous and stable heat conduction path between the mounting bracket and the heat-conducting plate. This reduces thermal resistance caused by assembly gaps and ensures the accuracy of temperature measurement data. The middle of the mounting bracket 105 forms an internal cavity that matches the shape of the temperature sensor 106, providing circumferential positioning and initial support for the temperature sensor and limiting its horizontal displacement.

[0051] The fixing plate 108 is fitted to the opening side of the fixing frame 105 and is engaged with the fixing frame 105 by an embedded snap-fit ​​method. After assembly, it can form a pressing limit on the temperature sensor 106 from the axial direction, firmly constraining the temperature sensor in the internal cavity of the fixing frame, effectively preventing the temperature sensor from shifting or loosening due to vibration and airflow impact during operation, and ensuring the consistency and long-term reliability of the temperature measurement position.

[0052] This split-type fixing structure facilitates the pre-installation and positioning of temperature sensors, simplifies the assembly process, and is suitable for mass production needs. It also ensures the heat conduction efficiency between the temperature sensing element and the heat-conducting plate through a rigid clamping structure, thereby improving the response speed and measurement accuracy of temperature detection. At the same time, the closed cavity structure provides lateral protection for the temperature sensor, reducing the direct corrosion of the temperature sensing element by condensate, oil, and other impurities, and extending the service life of the temperature measuring component. Furthermore, the overall layout is compact and compatible with the annular structure of the heating element body, eliminating the need for additional space occupied by the protective cover.

[0053] In one embodiment of this application, a high-temperature resistant insulating film 107 is provided on the side of the heat-conducting plate 102 facing the heating body 110.

[0054] It should be noted that the high-temperature resistant insulating film 107 has excellent high-temperature resistance and electrical insulation properties. It is laid on the inner surface of the heat-conducting plate 102 facing the accommodating area, correspondingly covering the core assembly area of ​​the heating element body 110 and the temperature measuring component.

[0055] The high-temperature resistant insulating film can form a reliable electrical insulation barrier between the metal heat-conducting plate and the heating element body and temperature measuring components. As a second layer of insulation protection in addition to the nano-ceramic coating on the surface of the heating element body, it can effectively avoid electrical faults such as leakage and short circuit even if the coating on the heating surface has local wear or defects, and significantly improve the safety and reliability of the heating element.

[0056] The high-temperature resistant insulating film can fill the microscopic assembly gap between the heat-conducting plate and the heating element body, optimize the fit between the two, help improve the uniformity of heat conduction, and buffer the rigid contact between components, reducing wear caused by assembly and working vibration. The film is thin overall and occupies little space. When laying it out, it can avoid the welding points of the fixing frame, which does not affect the welding strength and heat conduction efficiency of the fixing frame and the heat-conducting plate, and can achieve full insulation coverage of the core heating area, taking into account both structural compactness and protection reliability.

[0057] In one embodiment of this application, the high-temperature resistant insulating film 107 corresponds to the temperature sensor 106 and the heating element body 110, respectively.

[0058] It should be noted that the high-temperature resistant insulating film 107 corresponds to the area below the heating element body 110 and the temperature sensor 106, forming secondary insulation. Even if the coating on the heating surface is locally worn or defective, it can effectively avoid electrical faults such as leakage and short circuit, and significantly improve the safety and reliability of the heating element.

[0059] In one embodiment of this application, a heat insulation tube 112 is sleeved on the outside of the electrode wire 111, and the connecting wire is led out to the outside of the protective cover 101 through the protrusion hole.

[0060] It should be noted that the heat insulation tube 112 is made of glass fiber material, which has excellent high temperature resistance, insulation, flame retardancy and anti-aging properties. It is completely sleeved on the outer periphery of the electrode wire 111, covering the entire lead-out path of the electrode wire from the wiring terminal inside the accommodating area to the protrusion hole of the protective cover 101.

[0061] The heat insulation tube 112 can effectively block the high temperature in the containment area from being conducted to the surface of the electrode wire and the outside of the shield, preventing the nano-ceramic insulating coating of the electrode wire from aging due to long-term heat exposure. At the same time, it reduces the surface temperature of the lead wire and improves the safety of use. On the other hand, the insulation properties of the fiberglass tube can further enhance the electrical insulation level of the electrode wire, prevent the wire from contacting the metal shield and causing leakage risk, and buffer the friction and impact between the electrode wire and the wall of the protrusion hole, protect the surface coating of the wire from wear, and extend the service life of the power supply line.

[0062] Meanwhile, the outer diameter of the heat insulation tube 112 is compatible with the diameter of the protruding hole. After assembly, it can fill the gap between the hole wall and the wire. Without affecting the wiring, it reduces the penetration of external oil, condensate and impurities into the protective cover through the lead wire channel, thus taking into account both the wiring lead-out requirements and the overall sealing and protection performance. In addition, the overall rigidity of the electrode wire is improved after the heat insulation tube is installed, and the wiring shape is more stable and regular, which facilitates the positioning and docking during the assembly of the whole machine, and improves the efficiency of batch assembly and product consistency.

[0063] In one embodiment of this application, a ceramic sleeve 109 is embedded in the inner bottom of the protective cover 101.

[0064] It should be noted that the ceramic sleeve 109 is made of alumina ceramic material, which has the characteristics of high insulation, high temperature resistance, wear resistance and corrosion resistance. It is embedded and fixed in the hole position corresponding to the protruding hole on the inner side of the protective cover 101, and it fits tightly with the mounting groove of the protective cover 101. After assembly, the position is stable and not easy to loosen.

[0065] The inner hole of the ceramic sleeve 109 is coaxially aligned with the protruding hole. The electrode wire 111 passes through the inner hole of the ceramic sleeve and the protruding hole in sequence and is led out to the outside of the protective cover. The ceramic sleeve can form a rigid insulating barrier between the metal protective cover and the electrode wire, further enhancing the electrical insulation performance of the lead wire part, preventing the surface insulation structure of the electrode wire from being damaged due to wear and aging and conducting with the metal protective cover, effectively reducing the risk of leakage and improving the electrical safety level of the heating element.

[0066] The alumina ceramic surface is smooth and has excellent wear resistance. During the electrode wire installation process and subsequent use, it can prevent the wire from directly rubbing and bumping against the metal hole wall, protecting the nano-ceramic insulating coating and heat insulation tube 112 outside the electrode wire from scratches and extending the service life of the power supply lead. In addition, the ceramic sleeve can also fill the assembly gap inside the protruding hole, helping to limit the swing amplitude of the wire and reduce the seepage of external oil and condensate into the housing area along the lead channel, thus serving multiple functions of wire guidance, insulation protection, and sealing assistance.

[0067] In one embodiment of this application, the gasket 103 is high-temperature cotton, which is used to ensure that the heating element body is in contact with the heat-conducting plate.

[0068] It should be noted that the gasket 103 is specifically made of high-temperature resistant cotton material, which has good elastic compression performance and high-temperature stability, and can maintain its elasticity without failure under long-term high-temperature working environment. After the protective cover 101 and the heat-conducting plate 102 are assembled and fastened, the high-temperature cotton gasket undergoes elastic deformation under axial compression force, thereby forming a continuous and uniform axial pre-tightening force on the heating element body 110, pushing the heating surface of the heating element body 110 to tightly adhere to the inner surface of the heat-conducting plate 102, effectively eliminating the problem of poor fit caused by the machining tolerance of parts and the assembly gap, avoiding the phenomenon of excessive local thermal resistance and uneven heat transfer caused by loose fit, and ensuring that heat is efficiently and evenly conducted to the heat-conducting plate.

[0069] Meanwhile, the high-temperature cotton material can also buffer the vibration and impact during operation, prevent the heating element from being damaged by rigid collision with the protective cover, and help block heat loss to one side of the protective cover, optimize the direction of heat conduction, and improve the efficiency of heat energy utilization.

[0070] In one embodiment of this application, the heat insulation sheet 104 is a mica sheet.

[0071] It should be noted that the heat insulation sheet 104 is specifically a mica sheet, which possesses excellent high-temperature resistance, electrical insulation properties, and thermal insulation capabilities. It can maintain stable physical and chemical properties within the operating temperature range of the heating element, without the risk of melting or degradation. The mica sheet is layered between the high-temperature cotton pad and the heating element body, which on the one hand forms a reliable thermal barrier layer, preventing the heat generated by the heating element body from being conducted to the protective cover side, reducing ineffective heat loss, and allowing heat to be preferentially transferred to the heat conduction plate side, thereby improving heating efficiency. At the same time, it prevents the outer surface temperature of the protective cover from becoming too high, thus improving the safety of use. Mica sheets are excellent insulating media, forming an electrical insulation barrier between the heating element and the metal casing. Combined with the nano-ceramic insulating coating on the surface of the heating element, this creates double insulation protection, effectively reducing the risk of leakage and short circuits and improving the electrical safety level of the heating element. Furthermore, the mica sheets possess a certain structural rigidity, allowing for the even distribution of the elastic preload of the high-temperature cotton pad, ensuring uniform stress on the heating element and consistent pressure across the contact surface, further enhancing heat transfer stability.

[0072] In a specific implementation, refer to Figures 2-11 The heating element is installed as follows: Reference Figure 2 The ceramic sleeve 109 is fitted and fixed in the mounting position corresponding to the protruding hole on the inner side of the protective cover 101, so that the inner hole of the ceramic sleeve 109 is coaxially aligned with the protruding hole. Reference Figure 3 Place the gasket 103 into the receiving cavity in the middle of the protective cover 101, so that the gasket 103 is attached to the bottom wall of the receiving cavity, and complete the laying of the inner buffer insulation layer. Reference Figure 4 The heat insulation sheet 104 is laid on top of the gasket 103, so that the outer edge of the heat insulation sheet 104 is adapted and positioned to fit the inner wall of the cavity to form a heat insulation and protective layer. Reference Figure 5 The electrode wire 111 is pre-pressed and fixed in the fixing groove on the side of the heating element body 110. After completing the power supply wiring pre-processing, the heating element body 110 is placed above the heat insulation sheet 104, so that the heating working surface faces the opening side of the accommodating cavity. Reference Figure 6 The heat-conducting plate 102 is fastened and covered on the outside of the heating element body 110, so that the inner surface of the heat-conducting plate 102 is closely attached to the heating working surface of the heating element body 110. The outer edge of the heat-conducting plate 102 is fixedly connected to the protective cover 101 by spot welding, and the two together enclose a closed accommodating area. Reference Figure 7 A high-temperature resistant insulating film 107 is laid on the inner surface of the heat-conducting plate 102 facing the accommodating area, avoiding the welding points of the subsequent fixing frame during the installation, forming a secondary electrical insulation barrier. Reference Figure 8 The fixing bracket 105 is welded and fixed to the inner surface of the heat-conducting plate 102 to ensure that the bottom surface of the fixing bracket 105 is in close contact with the heat-conducting plate 102, forming a stable heat conduction path. Reference Figure 9 Heat insulation tubes 112 are respectively sleeved on the outside of the electrode wire 111 and the signal lead of the temperature sensor 106 to complete the heat insulation protection pretreatment of the wires; at the same time, the electrode wire 111 is passed through the inner hole of the ceramic sleeve 109 and the protrusion hole of the protective cover 101 in sequence and led out to the outside of the protective cover 101. Reference Figure 10 The temperature sensor 106 is embedded in the internal cavity of the mounting bracket 105, so that the temperature sensing side of the temperature sensor 106 forms a thermally conductive contact with the heat-conducting plate 102 through the mounting bracket 105. Reference Figure 11 The fixing plate 108 is assembled and fastened onto the fixing frame 105, forming a pressing and limiting position on the temperature sensor 106 from the axial direction, and the temperature sensor 106 is firmly constrained in the internal cavity of the fixing frame 105, thus completing the assembly of the entire heating element.

[0073] The protective cover is composed of a cover 101 and a heat-conducting plate 102. The cover 101 is a disc-shaped structure with a recessed central section forming an annular cavity. It is integrally stamped from SUS304 stainless steel. The recessed central cavity is the accommodating area, which is used to accommodate all internal components such as heating and temperature measurement devices. The annular periphery of the cover 101 outside the accommodating area is a non-accommodating area. Several air vents are evenly spaced along the circumference of this area, allowing external airflow to uniformly converge into the heating area from multiple directions.

[0074] The heat-conducting plate 102 is a circular plate that fits the outer contour of the protective cover 101. It is also made of SUS304 stainless steel and has both heat conduction and sealing functions. The heat-conducting plate 102 covers the opening side of the housing area of ​​the protective cover 101. The outer edges of the two are fixedly connected by spot welding to form a closed internal housing space. This structure can not only provide a fully enclosed sealed protection for the internal components, preventing the corrosion of oil and condensate, but also conduct heat evenly to the outside through the heat-conducting plate 102.

[0075] The heating components are arranged in layers from the inside to the outside along the axial direction of the cover 101, including a gasket 103, a heat insulation sheet 104 and a heating element body 110, all of which are adapted to the annular contour of the accommodating area and are coaxially assembled.

[0076] The gasket 103 is made of carbon fiber cotton and is flat against the bottom wall of the housing cavity of the shield 101. It is used to fill the assembly gaps of various components, buffer working vibrations, prevent the heating element body from rigidly contacting the shield, and at the same time help to block heat loss to one side of the shield, thereby improving heat utilization.

[0077] The heat insulation sheet 104 is made of phlogopite mica sheet, which is layered and laid on the outside of the gasket 103. It has excellent high temperature resistance and electrical insulation properties. On the one hand, it can block the heat of the heating element body from being conducted to the protective cover, avoiding excessively high temperature on the outer surface of the protective cover. On the other hand, it can achieve electrical isolation between the heating element and the metal protective cover, reducing the risk of leakage.

[0078] The heating element body 110 is a ring-shaped heating element made of iron-chromium-aluminum heating substrate. Its outer surface is uniformly coated with a black nano-ceramic insulating coating that can withstand temperatures up to 600℃. The outer end face of the heating element body 110 is in close contact with the inner surface of the heat-conducting plate 102. The heat generated during operation can be evenly diffused outward through the heat-conducting plate 102 to stably heat the atomized medium.

[0079] The heating element body 110 has a fixing groove on its side edge that is compatible with the wire diameter. The power supply connection wire is the electrode wire 111, which uses national standard copper wire and its outer surface is also coated with a nano-ceramic insulating coating. The inner core end of the electrode wire 111 is embedded and fixed in the fixing groove by a crimping process, forming a reliable electrical conduction and mechanical connection with the heating element body 110, thus avoiding solder joint detachment and poor contact under high temperature conditions.

[0080] The protective cover 101 has several protruding holes on its side protrusions, with the number of holes corresponding one-to-one with the internal connecting wires. The signal leads of the electrode wire 111 and the temperature sensor 106 can be led out to the outside of the protective cover through the corresponding protruding holes, realizing the connection between the internal components and the external circuit. The centralized side lead-out design can make the internal wiring neat, avoid the wires from crowding the airflow channel, and limit the swing amplitude of the wires, reducing the risk of wires being pressured, bent, and worn during assembly and use.

[0081] The inner surface of the heat-conducting plate 102 is covered with a high-temperature resistant insulating film 107. The insulating film is made of mica and covers the core heating area. When it is laid out, it avoids the welding points of the fixing frame. The high-temperature resistant insulating film 107 can serve as a second electrical insulation barrier in addition to the ceramic coating of the heating element body. Even if the coating of the heating surface is locally worn, it can effectively prevent leakage and short circuit faults, further improve the electrical safety level, and fill the micro assembly gaps to optimize the uniformity of heat conduction.

[0082] Both the electrode wire 111 and the signal lead of the temperature sensor 106 are covered with a heat insulation tube 112. The heat insulation tube 112 is made of glass fiber and covers the entire lead-out path of the wire from the inside of the accommodating area to the protrusion hole. The glass fiber heat insulation tube can block the high temperature in the accommodating area from being conducted to the surface of the wire, delay the aging of the insulation layer, and at the same time buffer the friction between the wire and the wall of the protrusion hole, protect the ceramic coating and insulation structure on the surface of the wire, and extend the service life of the lead.

[0083] A ceramic sleeve 109 is also embedded inside the protective cover 101 at the position corresponding to the protrusion hole. The ceramic sleeve 109 is made of alumina ceramic, and its inner hole is coaxially aligned with the protrusion hole. The electrode wire 111 passes through the inner hole of the ceramic sleeve. Alumina ceramic has the characteristics of high insulation and high wear resistance, which can form a rigid insulating isolation between the metal protective cover and the electrode wire, while preventing the wire from being scratched by the metal hole wall during the wire passing through and swinging. The ceramic sleeve can also fill the gap inside the hole, helping to reduce the seepage of external oil and condensate into the protective cover along the lead wire channel, and taking into account the functions of insulation, guidance and sealing.

[0084] During operation, the external control circuit supplies power to the heating element body 110 via electrode wire 111. The heating element body generates heat upon power-up, which is then evenly conducted outwards through the heat-conducting plate 102, heating and atomizing the external e-liquid, e-soap, and other atomizing media. External airflow flows evenly into the interior of the protective cover 101 through circumferential air vents, forming a stable and uniform airflow field, which, in conjunction with the heating area, achieves a thorough and uniform atomization effect. The temperature sensor 106 collects the temperature signal from the heat-conducting plate in real time and feeds it back to the external main control circuit, forming a closed-loop temperature control to ensure stable and controllable heating temperature.

[0085] In one embodiment of this application, an electronic hookah is also provided, wherein the electronic hookah is provided with a heating element as described in any of the above claims.

[0086] It should be noted that the heating element, as a core heating component, is integrated into the atomization chamber of the electronic hookah and is used to heat and atomize atomization media such as e-liquid and e-soap. Relying on the heating element's own fully enclosed protective structure, precise temperature measurement and control capabilities, and multi-layer insulation and heat insulation design, the stability, safety, and atomization experience of the electronic hookah can be significantly improved.

[0087] The enclosed protective structure formed by the shield 101 and the heat-conducting plate 102 can effectively prevent condensate and e-liquid impurities generated during the atomization process from directly corroding the heating element body 110 and temperature measuring components, reducing the risk of oxidation corrosion and wiring failure, extending the service life of the heating element, and reducing user maintenance and replacement costs; the air vents evenly distributed around the shield 101 can guide the external airflow to flow evenly into the heating area, making the atomization airflow stable and smooth, reducing local carbon buildup and burnt odor, and improving the consistency and purity of the atomized taste.

[0088] Meanwhile, the built-in temperature sensor 106 can collect the working temperature of the heating area in real time through the heat conduction plate 102. Together with the main control circuit of the electronic hookah, it can achieve precise temperature control and overheat protection. It can not only adapt to the optimal heating temperature of different atomizing media and optimize the atomization effect, but also avoid safety hazards such as dry burning and abnormal temperature rise, thus improving the overall safety of the machine.

[0089] The multi-layer heat insulation and insulation structure inside the heating element can effectively reduce the heat conduction to the outside of the atomizing chamber, avoid the electronic hookah shell temperature from getting too high, and improve the comfort of holding and using it; the integrated assembly structure has a compact layout, which facilitates standardized installation and replacement inside the electronic hookah, resulting in higher assembly efficiency and better product consistency.

[0090] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0091] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0092] The above provides a detailed description of a heating element and an electronic hookah provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A heating element, characterized in that, Including protective shields and heating components; The protective cover includes a receiving area and a non-receiving area. The receiving area corresponds to the shape of the heating component, and the heating component is disposed inside the protective cover corresponding to the receiving area. The non-accommodating area is provided with several air vents.

2. The heating element according to claim 1, characterized in that, The protective cover includes a protective cover and a heat-conducting plate; The protective cover and the heat-conducting plate are connected to form the receiving area.

3. The heating element according to claim 2, characterized in that, The heating component includes a gasket, a heat insulation sheet, and a heating element body stacked sequentially; wherein, the gasket is used to ensure that the heating element body is in contact with the heat-conducting plate; The heating element body is in contact with the heat-conducting plate.

4. The heating element according to claim 3, characterized in that, The outer surface of the heating element body is provided with a high-temperature resistant insulating coating; A fixing groove is provided on the side of the heating element body, and the power supply connection line of the heating element body is an electrode line, which is fixed in the fixing groove.

5. The heating element according to claim 2, characterized in that, It also includes a temperature sensor, which is fixedly connected to the heat-conducting plate.

6. The heating element according to claim 5, characterized in that, It also includes a fixing member, through which the temperature sensor is mounted on the heat-conducting plate, and the fixing member is attached to the heat-conducting plate.

7. The heating element according to claim 6, characterized in that, The fastener has a mounting groove, and the temperature sensor is embedded in the mounting groove.

8. The heating element according to claim 6, characterized in that, The fixing component is a fixing frame, which is welded and fixed to the surface of the heat-conducting plate; the fixing frame is provided with a fixing plate, which cooperates with the fixing frame to limit and fix the temperature sensor in the internal cavity of the fixing frame.

9. The heating element according to claim 5, characterized in that, The heat-conducting plate has a high-temperature resistant insulating film on the side facing the heating element body.

10. The heating element according to claim 9, characterized in that, The high-temperature resistant insulating film corresponds to the temperature sensor and the heating element body, respectively.

11. The heating element according to claim 4, characterized in that, The protective cover is provided with several protruding holes, which are used to lead out connecting wires.

12. The heating element according to claim 11, characterized in that, A heat insulation tube is sleeved on the outside of the electrode wire, and the connecting wire is led out to the outside of the protective cover through the protrusion hole.

13. The heating element according to claim 2, characterized in that, A ceramic sleeve is embedded in the bottom inner side of the protective cover.

14. An electronic hookah, characterized in that, The electronic hookah is provided with a heating element as described in any one of claims 1-13.

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