Electronic heating core, electronic heating device and electronic heating control method

Abstract

The invention provides an electronic heating core, an electronic heating device and an electronic heating control method, and relates to the field of electronic heating devices. The invention provides an electronic heating core. The electronic heating core provided by the embodiment of the invention comprises a heat conductor, a cover body, a first heating assembly and a flow guide plate, a paste containing cavity with a top opening is formed in the heat conductor, a plurality of air inlet channels are distributed on the outer side in the circumferential direction, and air outlet channels are formed between the adjacent air inlet channels. Notches communicated with the containing cavity are formed in the inner sides of the top ends of the two channels. The cover body covers the outer edge of the top end of the heat conductor; the first electric heating sheet is fixed on the outer side wall of the heat conductor to heat the heat conductor; the guide plate is arranged on the inner side of the cover body and extends into the containing cavity to separate the air inlet channel from the air outlet channel. The heat conductor is heated through the first electric heating sheet, so that the paste is conducted and heated, and air flow in the air inlet channel is heated. The guide plate forces the hot air flow to flow along the extension direction, thereby increasing the contact time and area with the surface of the paste, and improving the heat convection heating effect and the paste component entrainment rate.

Description

Technical Field

[0001] This invention belongs to the field of electronic heating device technology, and in particular relates to an electronic heating core, an electronic heating device, and an electronic heating control method. Background Technology

[0002] In the fields of ointment heating and atomization, and heating and volatilization, the electronic heating element is one of the core components. Its main function is to controllably heat the ointment (such as medicinal ointments, aromatic ointments, plant-derived extracts, etc.) within its containment cavity to undergo physical changes (such as atomization and volatilization), and then use airflow to form a target gas cloud for user application. With the increasing popularity of related products, the market has placed increasingly higher demands on the atomization efficiency, ointment utilization rate, airflow stability, and heating uniformity of the electronic heating element.

[0003] In existing technologies, the airflow channel design of traditional heating cores is relatively simple, resulting in low evaporation efficiency of the paste, which in turn affects the user experience. Summary of the Invention

[0004] In view of this, the present invention provides an electronic heating core, an electronic heating device, and an electronic heating control method, aiming to improve the evaporation efficiency of ointments.

[0005] The efficiency of the technical solution of this invention is achieved as follows: This invention provides an electronic heating core, comprising a heat conductor, a cover, a first heating assembly, and a guide plate. The heat conductor has a cavity with a top opening formed along its vertical direction, used to contain an ointment. The heat conductor has an inlet channel and an outlet channel extending along the vertical direction and located outside the cavity. An inlet notch is formed on the inner side of the top of each inlet channel, and an outlet notch is formed on the inner side of the top of each outlet channel. The inlet and outlet notches communicate with the cavity. Multiple inlet channels are arranged circumferentially along the heat conductor, and outlet channels are located between adjacent inlet channels. The cover fits over the outer edge of the top of the heat conductor. The first heating assembly includes a first electric heating element fixed to the outer wall of the heat conductor for heating the heat conductor. The guide plate is located inside the cover and extends into the cavity, such that the multiple inlet channels are located on one side of the guide plate, and the outlet channels are located on the other side.

[0006] In one embodiment, a second heating component is further included, the second heating component comprising: a second electric heating element attached to the side of the guide plate facing the air intake channel.

[0007] In one embodiment, the guide plate is an arc-shaped structure that extends downward along the vertical direction, with the concave surface of the arc-shaped structure facing the air outlet channel and the convex surface of the arc-shaped structure facing the air inlet channel.

[0008] In one embodiment, in the vertical direction, the height of the guide plate is greater than or equal to one-fifth of the depth of the receiving cavity, and the second electric heating element covers the surface of the guide plate facing the air intake channel.

[0009] The present invention also provides an electronic heating device, which includes a housing, a heating core, a liquid storage tank, and an exhaust pipe; the housing is hollow inside and has an air inlet communicating with the outside; the heating core is disposed in the inner cavity of the housing, and the air inlet channel of the heating core is connected to the air inlet; the liquid storage tank is disposed below the inner cavity of the housing and is used to contain filtrate to filter the gas introduced through the exhaust channel; the exhaust pipe is connected to the upper part of the liquid storage tank to lead the gas filtered by the liquid storage tank out of the housing.

[0010] In one embodiment, the air outlet channel of the heating core is connected to a conduit, the lower end of which extends into the liquid storage tank; the lower end of the conduit is connected to an anti-overflow component to prevent liquid in the liquid storage tank from flowing back into the heating core through the conduit.

[0011] In one embodiment, the anti-overflow assembly includes: a mounting cylinder with an open top, the top of which is sleeved around the lower end of the conduit; a check ball and a compression spring, respectively disposed within the mounting cylinder, one end of the compression spring abutting against the bottom wall of the mounting cylinder and the other end abutting against the check ball; the check ball being engaged with the end face of the lower end of the conduit; wherein the mounting cylinder has a communication port to allow the interior of the mounting cylinder to communicate with the interior of the liquid storage tank.

[0012] This invention discloses an electronic heating control method, characterized in that, based on the electronic heating device according to any one of claims 5 to 7, the electronic heating control method includes: setting preheating-related parameters through an operating component, the preheating-related parameters including at least a preheating mode and a preheating duration; a control module recording corresponding target preheating parameters and generating a preheating start signal; the control module sending the preheating start signal to at least one heating component to drive the corresponding heating component to start preheating; after preheating is completed, the control module automatically switches to the formal heating mode, calls the corresponding target heating temperature, generates a formal heating signal and sends it to at least one heating component to drive the corresponding heating component to formally heat.

[0013] In one embodiment, the driving of the corresponding heating component to begin heating includes: a temperature detection module acquiring the real-time temperature of the heating core cavity or the air outlet channel and feeding it back to the control module; the control module, based on a preset power adaptive switching algorithm, calculates the difference between the real-time temperature and the target heating temperature, and dynamically adjusts the operating power of the heating component: when the real-time temperature is lower than the target temperature, the heating component is controlled to operate at the heating power level of the current formal heating mode; when the real-time temperature is higher than or equal to the target temperature, the heating component is controlled to reduce to the heat preservation power level.

[0014] In one embodiment, controlling the heating component to operate at the heating power level of the current formal heating mode includes: when the difference between the real-time temperature and the target temperature is greater than a first preset threshold, controlling the heating component to operate at the first heating power level of the current formal heating mode; when the difference between the real-time temperature and the target temperature is less than or equal to the first preset threshold and greater than a second preset threshold, controlling the heating component to operate at the second heating power level of the current formal heating mode; when the difference between the real-time temperature and the target temperature is less than or equal to the second preset threshold, controlling the heating component to operate at the third heating power level of the current formal heating mode; wherein, the first preset threshold is greater than the second preset threshold, and the power levels of the first heating power level, the second heating power level, the third heating power level, and the heat preservation power level decrease sequentially.

[0015] The electronic heating core provided by this invention, by fixing the first electric heating element of the first heating component to the outer wall of the heat conductor, can transfer heat to the heat conductor. The heat conductor directly heats the paste within the containment cavity through heat conduction, raising its temperature to the temperature required for evaporation or atomization. Simultaneously, the heat conductor heats the airflow flowing through its internal air intake channel, forming a hot airflow. This hot airflow enters the containment cavity through the air intake notch. At this point, the guide plate located inside the cover and extending into the containment cavity plays a crucial role. It separates the multiple air intake channels from the air outlet channels on both sides, forcing the hot airflow to flow along the extension direction of the guide plate within the containment cavity, rather than directly from the air intake notch to the air outlet notch. This increases the contact time and contact area between the hot airflow and the paste surface. The hot airflow not only further heats the paste through convection but also more fully entrains the volatilized paste components, ultimately forming a uniform gas cloud rich in effective ingredients, which is then discharged from the air outlet notch through the air outlet channel. Meanwhile, the arrangement of multiple air inlet channels along the circumference of the heat conductor and the air outlet channels located between adjacent air inlet channels improves the uniformity of airflow and the sufficiency of interaction with the paste. Therefore, the electronic heating core provided in this embodiment of the invention solves the problem of low paste evaporation efficiency caused by the simple airflow channel design of traditional heating cores through structural synergy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 An external view of the electronic heating core provided by the present invention; Figure 2 Exploded view of the electronic heating core provided by the present invention; Figure 3 A cross-sectional view of the electronic heating core provided by the present invention; Figure 4 An external view of the electronic heating device provided by the present invention; Figure 5 A first overall cross-sectional view of the electronic heating device provided by the present invention; Figure 6 This is a second overall cross-sectional view of the electronic heating device provided by the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Electronic heating element; 11. Heat conductor; 110. Receiving cavity; 111. Air inlet channel; 1111. Air inlet notch; 112. Air outlet channel; 1121. Air outlet notch; 12. Cover; 13. Sealing ring; 14. First heating component; 141. First electric heating element; 15. Guide plate; 16. Second heating component; 161. Second electric heating element; 2. Housing; 3. Liquid storage tank; 4. Air outlet pipe; 5. Conduit; 6. Anti-overflow component; 61. Mounting cylinder; 62. Check ball; 63. Compression spring; A. Ointment; B. Ointment capsule shell. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0022] In the fields of heat-induced atomization and evaporation of ointments, the electronic heating element is a core component. Its main function is to controllably heat the ointment (such as cosmetic ointments, medicinal ointments, aromatic ointments, and plant-derived extracts) within its container to undergo physical changes (such as atomization and evaporation), and then use airflow to create a target gas cloud for user application. With the increasing prevalence of related products, the market is placing increasingly higher demands on the atomization efficiency, ointment utilization rate, airflow stability, and heating uniformity of the electronic heating element.

[0023] In existing technologies, the airflow channel design of traditional heating cores is relatively simple, resulting in low evaporation efficiency of the paste, which in turn affects the user experience.

[0024] In view of this, embodiments of the present invention provide an electronic heating core method, which aims to improve the evaporation efficiency of the paste.

[0025] Please see Figure 1 , Figure 2 and Figure 3 The electronic heating core 1 includes a heat conductor 11, a cover 12, a first heating component 14, and a flow guide plate 15.

[0026] The heat conductor 11 has a receiving cavity 110 with a top opening formed inside in the vertical direction. The main function of the receiving cavity 110 is to hold the paste A to be heated, such as medicinal paste A, aromatic paste A, plant-derived extract paste A, etc. Paste A is usually disposable and can be contained in a paste capsule B. When using it, the paste capsule is placed into the receiving cavity 110, which is convenient to operate and easy to clean.

[0027] To facilitate airflow and heat exchange, the heat conductor 11 is provided with an air inlet channel 111 and an air outlet channel 112. Both channels extend vertically and are located outside the receiving cavity 110. Specifically, an air inlet notch 1111 is formed on the inner side of the top of the air inlet channel 111, and an air outlet notch 1121 is formed on the inner side of the top of the air outlet channel 112. The air inlet notch 1111 and the air outlet notch 1121 are respectively connected to the receiving cavity 110, so that external airflow can enter the receiving cavity 110 through the air inlet channel 111 and the air inlet notch 1111, impact the surface of the paste A, and then flow out through the air outlet notch 1121 and the air outlet channel 112.

[0028] To improve the uniformity and fullness of air intake, multiple air intake channels 111 are arranged along the circumference of the heat conductor 11, while the air outlet channel 112 is arranged between two adjacent air intake channels 111. This layout is conducive to the formation of more uniform turbulence in the airflow within the accommodating cavity 110, thereby improving heat exchange efficiency.

[0029] The function of the cover 12 is to cover the outer edge of the top of the heat conductor 11 to form a certain seal on the receiving cavity 110 (to enhance the seal, a sealing ring 13 can be sandwiched between the cover 12 and the heat conductor 11), prevent external impurities from entering and reduce heat loss, and provide support for the installation of the guide plate 15.

[0030] The first heating component 14 is one of the core components for achieving the heating function. It includes a first electric heating element 141, which is fixed to the outer wall of the heat conductor 11. Heat is generated by the first electric heating element 141, and the heat is transferred to the heat conductor 11, thereby heating the airflow in the air inlet channel 111 and the air outlet channel 112, as well as the paste A in the receiving cavity 110, thus achieving the atomization or evaporation of the paste A. The heated airflow in the air inlet channel 111 enters the receiving cavity 110 through the air inlet notch 1111 and impacts the surface of the paste A, promoting the evaporation and atomization of the components of the paste A.

[0031] Based on the aforementioned configuration of the air intake channel 111, the heat conductor 11, and the first heating component 14, the heat source for the evaporation and / or atomization of the ointment A within the receiving cavity 110 is as follows: First, the heat conductor 11 itself, after being heated by the first heating component 14, transfers heat to the ointment A within the receiving cavity 110 through heat conduction, raising the temperature of the ointment A to the temperature required for evaporation or atomization. Second, the airflow within the air intake channel 111, upon passing through the heat conductor 11 heated by the first heating component 14, undergoes heat exchange with the heat conductor 11 and is heated, forming a hot airflow. This hot airflow enters the receiving cavity 110 through the air intake opening 1111 and directly acts on the surface of the ointment A. On one hand, it further heats the ointment A through convective heat transfer; on the other hand, the hot airflow can quickly carry away the components volatilized from the ointment A, promoting the continuous evaporation process. This synergistic effect of dual heating and airflow drive can effectively improve the evaporation efficiency and atomization effect of the ointment A, ensuring that more effective components can be carried out in a timely manner.

[0032] In addition to this, a guide plate 15 is provided to improve the evaporation efficiency of paste A. Specifically, the guide plate 15 is located on the inner side of the cover 12 and extends into the receiving cavity 110 so that multiple air inlet channels 111 are located on one side of the guide plate 15 and air outlet channels 112 are located on the other side of the guide plate 15.

[0033] The guide plate 15 is disposed on the inner side of the cover 12 and extends into the receiving cavity 110. Its key function is to guide the airflow path. The guide plate 15 is positioned such that multiple air inlet channels 111 are located on one side of the guide plate 15, while air outlet channels 112 are located on the other side. Thus, the hot airflow entering the receiving cavity 110 from the air inlet channel 111 through the air inlet notch 1111 is blocked and guided by the guide plate 15, preventing it from flowing directly from the air inlet notch 1111 to the air outlet notch 1121. Instead, it needs to flow a distance within the receiving cavity 110 along the extending direction of the guide plate 15. Compared to the traditional method where hot airflow flows directly out along the surface of the paste A, this method increases the contact time and contact area between the hot airflow and the surface of the paste A.

[0034] For example, in the atomization scenario of medicinal ointment A, the baffle plate 15 can enable the hot airflow to form a spiral or vortex flow path in the receiving cavity 110, fully encapsulating the atomized particles volatilized from ointment A, reducing the situation where insufficiently mixed airflow is directly discharged from the air outlet channel 112, thereby improving the volatilization and carry-out efficiency of the components of ointment A, so that more effective ingredients are output with the airflow per unit time.

[0035] The principle behind the heating core's improved evaporation efficiency of ointment A is as follows: First, the first heating component 14 heats the heat conductor 11, which directly heats the ointment A within the receiving cavity 110 through heat conduction, bringing it to the temperature required for evaporation or atomization. Simultaneously, the airflow passing through the air inlet channel 111 is heated into a hot airflow during heat exchange with the heat conductor 11, and enters the receiving cavity 110 through the air inlet notch 1111. At this point, the guide plate 15 separates the air inlet channel 111 from the air outlet channel 112 on both sides, forcing the hot airflow to flow along the extension direction of the guide plate 15 within the receiving cavity 110, significantly increasing the contact time and contact area between the hot airflow and the surface of ointment A, thus preventing airflow short-circuiting. The hot airflow not only further heats the ointment A through convection but also efficiently entrains the evaporating components of ointment A, forming a fully mixed gas mass under the guidance of the guide plate 15 before being discharged through the air outlet notch 1121 and the air outlet channel 112.

[0036] Furthermore, considering that the edge area of ​​paste A easily gains heat due to its proximity to the heat conductor 11, while the central area of ​​paste A may have lower heat transfer efficiency due to its relatively greater distance from the heat conductor 11, resulting in a slower evaporation rate compared to the edge area, this can easily lead to uneven evaporation of paste A and a higher residue of effective ingredients in the central area. The design of the guide plate 15 extending into the receiving cavity 110 can guide the hot airflow to reach the central area of ​​paste A more deeply. Specifically, when the extension length of the guide plate 15 is sufficient, the hot airflow entering from the air inlet channel 111 will flow towards the center of the receiving cavity 110 under the guidance of the guide plate 15, directly impacting the central surface of paste A. This not only enhances the convective heating of the central paste A but also effectively removes the evaporating components from the central area, thereby promoting uniform and efficient evaporation of the entire surface of paste A (including the edges and center), reducing the problem of low utilization rate of paste A due to insufficient local heating or inadequate airflow scouring.

[0037] In summary, the electronic heating core 1 provided in this embodiment of the invention includes a heat conductor 11, a cover 12, a first heating component 14, and a guide plate 15. The heat conductor 11 has a receiving cavity 110 with a top opening formed inside in the vertical direction, which is used to receive the paste A. The heat conductor 11 is provided with an air inlet channel 111 and an air outlet channel 112 extending vertically and located outside the receiving cavity 110. An air inlet notch 1111 is formed on the inner side of the top end of the air inlet channel 111, and an air outlet notch 1121 is formed on the inner side of the top end of the air outlet channel 112. The air inlet notch 1111 and the air outlet notch 1121 are respectively connected to… The receiving cavity 110 is connected; multiple air inlet channels 111 are arranged along the circumference of the heat conductor 11, and an air outlet channel 112 is arranged between two adjacent air inlet channels 111; the cover 12 covers the outer edge of the top end of the heat conductor 11; the first heating assembly 14 includes a first electric heating element 141, which is fixed to the outer side wall of the heat conductor 11 for heating the heat conductor 11; the guide plate 15 is arranged on the inner side of the cover 12 and extends into the receiving cavity 110 so that multiple air inlet channels 111 are located on one side of the guide plate 15 and the air outlet channel 112 is located on the other side of the guide plate 15.

[0038] The electronic heating core 1 provided in this embodiment of the invention can transfer heat to the heat conductor 11 by fixing the first electric heating element 141 of the first heating component 14 to the outer wall of the heat conductor 11. The heat conductor 11 directly heats the paste A in the receiving cavity 110 through heat conduction, raising its temperature to the temperature required for evaporation or atomization. On the other hand, the heat conductor 11 heats the airflow flowing through its internal air intake channel 111, forming a hot airflow. This hot airflow enters the receiving cavity 110 through the air intake notch 1111. At this time, the guide plate 15 located inside the cover 12 and extending into the receiving cavity 110 plays a key role. It separates the multiple air intake channels 111 and the air outlet channels 112 on both sides, forcing the hot airflow to flow along the extension direction of the guide plate 15 in the receiving cavity 110, rather than flowing directly from the air intake notch 1111 to the air outlet notch 1121. This increases the contact time and area between the hot airflow and the surface of the paste A. The hot airflow not only further heats the paste A through convection but also more fully entrains the volatilized components of the paste A, ultimately forming a uniform gas mass rich in effective ingredients, which is discharged from the gas outlet 1121 through the gas outlet channel 112. Simultaneously, the arrangement of multiple air inlet channels 111 along the circumference of the heat conductor 11 and the gas outlet channels 112 located between adjacent air inlet channels 111 improves the uniformity of airflow entry and the sufficiency of its interaction with the paste A. Therefore, the electronic heating core 1 provided in this embodiment of the invention, through structural synergy, solves the problem of low evaporation efficiency of paste A caused by the simple airflow channel design of traditional heating cores.

[0039] In one implementation, please refer to... Figure 1 , Figure 2and Figure 3 To further improve the evaporation efficiency of ointment A, the electronic heating core 1 is also equipped with a second heating component 16. Specifically, the second heating component 16 includes a second electric heating element 161, which is attached to the side of the guide plate facing the air intake channel 111.

[0040] When the hot airflow (which has been preliminarily heated by the heat conductor 11) enters the receiving cavity 110 from the air intake channel 111 through the air intake notch 1111 and flows near the guide plate 15, the second electric heating element 161 on the guide plate 15 will heat it again. This is equivalent to adding an auxiliary heating source in the inlet area of ​​the airflow entering the receiving cavity 110, which can further increase the temperature of the airflow entering the receiving cavity 110. After the higher temperature airflow enters the receiving cavity 110, on the one hand, it can more effectively heat the paste A through convection heat transfer, especially for the surface layer of paste A, and can quickly raise its temperature to the evaporation or atomization threshold; on the other hand, the higher temperature airflow itself carries more energy, and after mixing with the components volatilized from paste A, it can more effectively maintain the gaseous or atomized state of these components, reducing the possibility of recondensation due to temperature drop during flow, thereby further improving the carry-out efficiency of the components of paste A. For example, in the evaporation scenario of aromatic paste A, the second electric heating element 161 can make the airflow temperature entering the receiving cavity 110 5-10 degrees Celsius higher than when heated only by the heat conductor 11. This not only accelerates the evaporation rate of aromatic molecules, but also allows more aromatic molecules to be carried by the airflow and discharged from the air outlet channel 112, so that the user can perceive the fragrance more quickly and clearly. At the same time, after the guide plate 15 is heated by the second electric heating element 161, it also becomes a heat source that radiates heat into the receiving cavity 110, forming a certain radiative heating of paste A in the receiving cavity 110. Combined with the conductive heating of the heat conductor 11 and the convective heating of the hot airflow, a multiple heating mechanism is formed, making the paste A more evenly and fully heated, further avoiding the problem of insufficient local heating, thereby comprehensively improving the evaporation efficiency and overall utilization rate of paste A.

[0041] In one implementation, please refer to... Figure 1 , Figure 2 and Figure 3 The structure of the air deflector 15 has been optimized. Specifically, the air deflector 15 has an arc-shaped structure that extends downwards in the vertical direction, with the concave surface of the arc-shaped structure facing the air outlet channel 112 and the convex surface of the arc-shaped structure facing the air intake channel 111.

[0042] The convex surface of the arc-shaped guide vane 15 faces the intake channel 111, so that the airflow entering from the intake opening 1111 is guided downward and laterally when it comes into contact with the convex surface of the guide vane 15, forming a smoother spiral flow trend. The convex surface design has a dual function of buffering and guiding the airflow. On the one hand, it reduces the energy loss when the airflow directly impacts the guide vane 15. On the other hand, through the guidance of the arc surface, the airflow is naturally deflected downward along the arc of the convex surface, avoiding airflow turbulence caused by right angle or acute angle structures.

[0043] Meanwhile, the arc-shaped structure increases the contact area with the airflow compared to a planar structure. This arc-shaped design, by guiding the airflow path and optimizing the heating area, further enhances the performance of the electronic heating core 1 in improving airflow stability and heating uniformity.

[0044] Furthermore, the guide plate 15 can be further refined based on the arc-shaped structure. There are several ways to further refine it. For example, several guide ribs extending vertically can be provided on the arc-shaped surface of the guide plate 15. These ribs can be evenly distributed on the convex or concave surface of the arc. When the airflow flows along the arc-shaped surface, the guide ribs can divide and organize the airflow, transforming what might have been laminar or turbulent flow into more ordered multiple small airflows, increasing the contact points between the airflow and the surface of the paste A, and further enhancing the scouring effect of the airflow on the paste A. Simultaneously, the guide ribs can also increase the surface area of ​​the guide plate 15, improving its own heat dissipation (or heat transfer) efficiency, resulting in more uniform heating. Alternatively, a wavy or sawtooth structure can be provided at the bottom edge of the guide plate 15. When the airflow flows upward from the bottom of the guide plate 15, this irregular edge can disturb the airflow, forming tiny vortices, thereby enhancing the mixing between the airflow and the rising vapor of the paste A, promoting the uniform distribution of the effective ingredients. For example, several tiny through holes can be made on the side of the guide plate 15 facing the air intake channel 111 (i.e., the convex surface) and the second electric heating element 161. These through holes are not for the main flow of air, but allow a very small amount of preheated airflow to pass through, forming a local micro-airflow circulation within the receiving cavity 110. This supplements the flushing of the paste A area behind the guide plate 15 or near the wall of the receiving cavity 110, avoiding "dead zones" in heating and atomization, and further improving the overall utilization rate of paste A. These refined designs are all based on the arc-shaped structure, further optimizing airflow guidance, heating uniformity, and paste A utilization rate. They can be selected or combined according to specific application scenarios and the characteristics of paste A.

[0045] In one implementation, please refer to... Figure 1 , Figure 2 and Figure 3To ensure smooth airflow through the gap between the bottom of the guide plate 15 and the top of the paste A, and to expand the heating coverage of the guide plate 15, the guide plate 15 was further optimized. Specifically, in the vertical direction, the height of the guide plate 15 should be greater than or equal to one-fifth of the depth of the receiving cavity 110, and the second electric heating element 161 covers the surface of the guide plate 15 facing the air intake channel 111.

[0046] It is understandable that if the height of the guide plate 15 is too low, its extension length into the receiving cavity 110 will be insufficient, which may result in limited airflow guidance and inability to effectively cover the surface of the paste A, making it difficult to fully guide the hot airflow to deeply contact the paste A. However, when the height of the guide plate 15 reaches or exceeds one-fifth of the depth of the receiving cavity 110, it can ensure that there is a suitable airflow gap between its bottom and the top of the paste A, avoiding obstruction of airflow due to excessive distance or weakening of the guiding effect due to excessive distance. It can also allow the heating area of ​​the second electric heating element 161 (especially the heating of the airflow and paste A through thermal radiation and thermal conduction) to cover a larger area of ​​the surface of the paste A, especially the heating and airflow guidance of the upper part of the paste A, thereby further increasing the contact time and area between the hot airflow and the surface of the paste A, and promoting the improvement of evaporation efficiency. For example, when the depth of the receiving cavity 110 is 50 mm, the height of the guide plate 15 is set to 10 mm or more. The portion of the guide plate 15 extending into the receiving cavity 110 can guide the hot airflow entering from the air inlet channel 111 to the upper middle part of the surface of the paste A. At the same time, the heat generated by the guide plate 15 can be radiated to the area more evenly, reducing the gradient difference in heat distribution.

[0047] In one implementation, please refer to... Figure 1 , Figure 2 and Figure 3To enhance the intelligent control level and safety of the electronic heating core 1, the electronic heating core 1 also includes a temperature detection component. Specifically, the temperature detection component may include at least one temperature sensor, which is positioned at a specific location on the heat conductor 11 to monitor the temperature of the heat conductor 11 in real time. For example, the temperature sensor may be closely attached to the outer wall of the heat conductor 11, adjacent to the first electric heating element 141 of the first heating component 14, to accurately obtain the actual temperature of the heat conductor 11 after heating; alternatively, the temperature sensor may be embedded inside the heat conductor 11 near the receiving cavity 110 to directly monitor the temperature of the area in contact with the paste A, thereby more accurately reflecting the heating state of the paste A. The output of the temperature sensor is connected to an external control circuit, transmitting the real-time acquired temperature signal to the control circuit. The control circuit dynamically adjusts the power supply of the first electric heating element 141 of the first heating component 14 and the second heating component 16 and the second electric heating element 161 (e.g., through PWM pulse width modulation) according to a preset temperature threshold or temperature curve. When the temperature of the heat conductor 11 is detected to be below the set threshold, the control circuit increases the current of the first electric heating element 141 and the second electric heating element 161 to enhance the heating power. When the temperature is above the set threshold, the heating power is reduced or heating is paused, thereby achieving precise closed-loop control of the heating process. This prevents the paste A from overheating and carbonizing due to excessively high temperatures, which could destroy the effective ingredients, or the atomization effect from being too low. Furthermore, the temperature detection component can trigger a protection mechanism in case of abnormal conditions (such as when the temperature exceeds the safety limit), quickly cutting off the power to the heating component to prevent accidents and significantly improving the safety and reliability of the electronic heating core 1 during use. For example, in the atomization scenario of medicinal paste A, some drug components are extremely sensitive to temperature; excessively high temperatures may cause them to fail or produce harmful substances. Precise temperature control by the temperature detection component allows the drug to be atomized at the most suitable temperature, improving efficacy while ensuring user safety. In the use of aromatic paste A, stable temperature control also improves the uniformity and persistence of aroma release, reducing the impact of burnt odors caused by localized overheating on the user experience.

[0048] This invention also provides an electronic heating device.

[0049] Please combine Figure 4 , Figure 5 and Figure 6 The electronic heating device includes a housing 2, a heating core, a liquid storage tank 3, and an exhaust pipe 4. The housing 2 is hollow inside and has an air inlet that communicates with the outside. The heating core is located inside the housing 2, and its air inlet channel 111 communicates with the air inlet. The liquid storage tank 3 is located at the bottom of the housing 2 and is used to hold the filtered liquid to filter the gas introduced through the exhaust channel 112. The exhaust pipe 4 communicates with the upper part of the liquid storage tank 3 to lead the gas filtered by the liquid storage tank 3 out of the housing 2.

[0050] The storage tank 3 is equipped with an electronic heating device that provides gas purification. When the gas mass carrying the active ingredients output from the gas outlet 112 enters the storage tank 3, the gas mass passes through the filtrate inside the storage tank 3. The filtrate can be selected according to different application needs. For example, in pharmaceutical applications, the filtrate can be sterile distilled water or a specific drug diluent, which can adsorb and filter small particulate impurities in the gas mass, while also humidifying or further neutralizing and stabilizing the active ingredients to ensure the cleanliness and mildness of the output gas. In aromatherapy applications, the filtrate can be pure water, which mainly purifies the airflow and removes any trace odors that may be generated by heating, making the aroma purer and more natural. In the heating application of plant-derived extract paste A, such as when heating tobacco extract, a specific adsorbent can be selected as the filtrate to adsorb any irritating substances or tar components that may be present in the gas mass, thereby improving the quality of the output gas. As the gas passes through the filtrate, it forms fine bubbles that come into full contact with the liquid. The bubbles rise to the surface, burst, and release the purified gas, which is then discharged through the outlet pipe 4 to the outside of the housing 2 for user use. This structural design allows the electronic heating device to not only efficiently atomize the paste A but also to deeply process the atomized gas, further improving the quality of the output gas and user comfort.

[0051] In one implementation, please refer to Figure 4 , Figure 5 and Figure 6 To prevent the liquid in the storage tank 3 from flowing back into the heating core, the air outlet channel 112 of the heating core is connected to a conduit 5, the lower end of which extends into the storage tank 3; the lower end of the conduit 5 is connected to an anti-overflow component 6 to limit the liquid in the storage tank 3 from flowing back into the heating core through the conduit 5.

[0052] The anti-overflow component 6 has various structural forms. For example, one can adopt a one-way valve structure. The one-way valve is installed at the outlet of the lower end of the conduit 5, which only allows gas to flow unidirectionally from the conduit 5 into the liquid storage tank 3. When the device stops working or the liquid level in the liquid storage tank 3 may be higher than the outlet of the conduit 5 due to shaking, the one-way valve closes under the action of liquid pressure or its own spring force, thereby effectively preventing liquid from flowing back through the conduit 5 into the gas outlet channel 112 and the receiving cavity 110 of the heating core, avoiding liquid entering the heating core and causing short circuits or contamination of paste A. Alternatively, an umbrella-shaped splash cap can be installed at the lower end of the conduit 5. The edge of the splash cap extends downward and covers the outlet of the conduit 5, and a gap is left between the splash cap and the outlet of the conduit 5 for gas to discharge. When the liquid in the liquid storage tank 3 shakes violently, the splash cap can act as a shield to prevent liquid from splashing directly into the conduit 5, while not affecting the normal discharge of gas. These designs of the anti-overflow component 6 can effectively improve the safety and reliability of the electronic heating device and avoid malfunctions caused by liquid backflow.

[0053] For example, the anti-overflow component 6 includes an installation cylinder 61, a check ball 62, and a compression spring 63; the top of the installation cylinder 61 is open, and the top of the installation cylinder 61 is sleeved around the lower end of the conduit 5; the check ball 62 and the compression spring 63 are respectively disposed inside the installation cylinder 61, one end of the compression spring 63 abuts against the bottom wall of the installation cylinder 61, and the other end abuts against the check ball 62; the check ball 62 is snapped into the end face of the lower end of the conduit 5; wherein, the installation cylinder 61 has a communication port so that the interior of the installation cylinder 61 is connected to the interior of the liquid storage tank 3.

[0054] When gas from the outlet channel 112 of the heating core enters the conduit 5, the gas pushes the check ball 62 downwards. Under the pressure of the gas, the check ball 62 overcomes the elastic force of the compression spring 63 and moves downwards, thereby opening the outlet at the lower end of the conduit 5. The gas then enters the liquid storage tank 3 through the connection port of the conduit 5 and the mounting cylinder 61. When the gas output stops, the elastic force of the compression spring 63 pushes the check ball 62 upwards, causing it to re-engage with the end face of the lower end of the conduit 5, closing the outlet of the conduit 5. This prevents the liquid in the liquid storage tank 3 from flowing back into the heating core through the conduit 5 under gravity or shaking. This structure achieves a reliable one-way flow function mechanically, is simple in structure and stable in operation, and can effectively adapt to the backflow prevention requirements under different working conditions.

[0055] In one implementation, please refer to Figure 4 , Figure 5 and Figure 6 In order to make reasonable use of the internal space of the device, the top of the liquid storage tank 3 is recessed downward to form a cavity. The electronic heating device also includes a battery, which is installed in the cavity. The battery is electrically connected to the heating component to provide working power to the heating component.

[0056] The depth and shape of the recess can be adapted to the size of the battery. For example, when the reservoir 3 is a cuboid structure, its top central area is recessed downwards to form a circular recess that matches the cylindrical battery. After the battery is inserted, its top is basically flush with or slightly lower than the top surface of the reservoir 3, and will not protrude from the reservoir 3, making the internal space layout of the housing 2 compact. At the same time, the inner wall of the recess can be provided with elastic buffer pads or positioning ribs to fix and protect the battery, preventing the battery from loosening or being damaged due to vibration during carrying or use. The battery is connected to the external control circuit of the heating core through wires to provide a stable DC power supply to the first heating element 141 and the second heating element 161. This design of integrating the battery into the top recess of the reservoir 3 optimizes the space allocation of the internal structure of the device.

[0057] This invention also provides an electronic heating control method based on the above-mentioned electronic heating device.

[0058] S1. Parameter Setting and Start Signal Generation. The user sets preheating-related parameters based on the characteristics of the paste A to be heated, using the operating components of the electronic heating device (which can include various input methods such as buttons, touch controls, and knobs). These preheating-related parameters include at least the preheating mode (such as rapid preheating, low-temperature slow preheating, etc., adapted to different pastes A) and the preheating duration. The device's built-in control module receives and records the user-set target preheating parameters in real time, and generates a preheating start signal after logical verification, providing instruction support for subsequent preheating execution.

[0059] S2. Trigger preheating execution. The control module sends the generated preheating start signal to at least one heating component (a single heating component or multiple heating components can work together depending on the preheating mode), driving the corresponding heating component to start and enter the preheating state, gradually increasing the temperature of the heating core and internal paste A, avoiding local overheating problems caused by direct formal heating.

[0060] S3. Preheating Switching and Formal Heating Start. The control module synchronously monitors the preheating process. When the preset preheating termination conditions are met (such as the cumulative preheating time reaching a set value, or the temperature of the corresponding area of ​​the heating core reaching the preheating threshold), preheating is determined to be complete. Subsequently, the control module automatically switches to formal heating mode, calls the preset or user-configured target heating temperature parameters, generates a formal heating signal, and sends it to at least one heating component, driving the corresponding heating component to start formal heating according to the target temperature requirement.

[0061] In summary, during the preheating stage, targeted driving of the heating components ensures a stable temperature rise for both the heating core and paste A, avoiding potential localized carbonization or decomposition of active ingredients in paste A that could result from direct high-temperature heating. This control method allows for flexible adjustment of preheating parameters and the final heating temperature based on the characteristics of different pastes A, making it suitable for various applications such as pharmaceuticals, aromatherapy, and plant-derived extractions.

[0062] In one embodiment, driving the corresponding heating component to begin heating includes: The temperature detection module starts working and collects the temperature data of the heating core cavity 110 or the air outlet channel 112 in real time, and feeds back the collected real-time temperature signal to the control module.

[0063] The control module calls a preset power adaptive switching algorithm, using the real-time temperature feedback and the preset target heating temperature as parameters, to calculate the temperature difference between the two, and dynamically adjusts the working power of the heating component based on the difference result.

[0064] Based on the temperature difference determination, the control module executes corresponding power control: when the real-time temperature is lower than the target heating temperature, the heating component is controlled to operate at the heating power level corresponding to the current formal heating mode; when the real-time temperature is higher than or equal to the target heating temperature, the heating component is controlled to switch to the heat preservation power level. The heating power level is higher than the heat preservation power level to ensure the effectiveness of temperature regulation.

[0065] For example, when the target heating temperature is set to 180℃, if the real-time temperature reported by the temperature detection module is 165℃, the control module determines the temperature difference to be 15℃. At this point, the heating component is controlled to maintain the high power (e.g., 80W) of the current formal heating mode to quickly reduce the temperature difference. When the real-time temperature reaches 178℃ and the difference decreases to 2℃, the control module can slightly reduce the power to 70W in advance to avoid temperature overshoot. When the real-time temperature rises to 180℃, it immediately switches to the heat preservation power (e.g., 30W) to maintain only the basic heat supply, offsetting heat loss and stabilizing the temperature near the target value. This power adaptive strategy based on dynamic adjustment of temperature difference can ensure heating efficiency and significantly improve temperature control accuracy, typically controlling the temperature fluctuation range within ±2℃. In the heating scenario of medicinal ointment A, this precise power adjustment ensures that ointment A is always atomized within the optimal active temperature range, maximizing the retention of effective ingredients; when heating plant-derived extract ointment A, stable temperature control helps to achieve uniform release of aroma or extract components, improving the consistency of user experience.

[0066] In one embodiment, controlling the heating component to operate at the heating power level of the current formal heating mode includes: When the difference between the real-time temperature and the target temperature is greater than the first preset threshold, the heating component is controlled to operate at the first heating level power of the current formal heating mode.

[0067] When the difference between the real-time temperature and the target temperature is less than or equal to the first preset threshold and greater than the second preset threshold, the heating component is controlled to operate at the second heating level power of the current formal heating mode.

[0068] When the difference between the real-time temperature and the target temperature is less than or equal to the second preset threshold, the heating component is controlled to operate at the third heating level of the current formal heating mode.

[0069] Among them, the first preset threshold is greater than the second preset threshold, and the power of the first heating level, the power of the second heating level, the power of the third heating level and the power of the heat preservation level decrease in sequence.

[0070] For example, the first preset threshold is set to 15℃, the second preset threshold is 5℃, the first heating power is 80W, the second heating power is 60W, the third heating power is 40W, and the heat preservation power is 30W. When the difference between the real-time temperature and the target temperature is 20℃ (greater than the first preset threshold of 15℃), the control module controls the heating component to operate at the first heating power of 80W for rapid heating; when the difference drops to 10℃ (less than or equal to the first preset threshold of 15℃ and greater than the second preset threshold of 5℃), it switches to the second heating power of 60W to slow down the heating rate; when the difference further drops to 3℃ (less than or equal to the second preset threshold of 5℃), it switches to the third heating power of 40W for fine-tuning heating; when the difference reaches 0℃ or enters the target range of ±2℃, it switches to the heat preservation power of 30W. This multi-level, stepped power adjustment allows for more precise control of the heating process, preventing temperature overshoot due to excessive power when approaching the target temperature, thus further improving the stability and accuracy of temperature control. This layered, progressive power control logic enables the heating component's output power to smoothly transition according to the proximity of the actual temperature to the target temperature, ensuring both heating efficiency with large temperature differences and temperature control accuracy with small temperature differences. This provides a more suitable and reliable energy supply solution for heating different types of paste A.

[0071] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An electronic heating element, characterized in that, include: A heat conductor has an internal cavity with a top opening formed along the vertical direction, which is used to contain an ointment. The heat conductor has an air inlet channel and an air outlet channel extending along the vertical direction and located outside the cavity. An air inlet notch is formed on the inner side of the top of the air inlet channel, and an air outlet notch is formed on the inner side of the top of the air outlet channel. The air inlet notch and the air outlet notch are respectively connected to the cavity. Multiple air inlet channels are arranged along the circumference of the heat conductor, and the air outlet channel is arranged between two adjacent air inlet channels. A cover that fits over the outer edge of the top of the heat conductor; A first heating assembly, comprising a first electric heating element fixed to the outer wall of the heat conductor for heating the heat conductor; and... A baffle plate is disposed on the inner side of the cover and extends into the receiving cavity so that the plurality of air inlet channels are located on one side of the baffle plate and the air outlet channel is located on the other side of the baffle plate.

2. The electronic heating element according to claim 1, characterized in that, It also includes a second heating component, the second heating component comprising: The second electric heating element is attached to the side of the guide plate facing the air intake channel.

3. The electronic heating element according to claim 2, characterized in that, The guide plate has an arc-shaped structure that extends downward along the vertical direction, with the concave surface of the arc-shaped structure facing the air outlet channel and the convex surface of the arc-shaped structure facing the air inlet channel.

4. The electronic heating element according to claim 3, characterized in that, In the vertical direction, the height of the guide plate is greater than or equal to one-fifth of the depth of the receiving cavity, and the second electric heating element covers the surface of the guide plate facing the air intake channel.

5. An electronic heating device, characterized in that, include: The housing is hollow inside and has an air inlet that communicates with the outside. The heating element as described in any one of claims 1-4 is disposed in the inner cavity of the housing, and the air inlet channel of the heating element is connected to the air inlet. A liquid storage tank is disposed below the inner cavity of the housing. The liquid storage tank is used to contain the filter liquid to filter the gas introduced through the gas outlet channel. An exhaust pipe is connected to the upper part of the liquid storage tank to lead the gas filtered by the liquid storage tank out of the shell.

6. The electronic heating device according to claim 5, characterized in that, The heating element has an exhaust channel connected to a conduit, the lower end of which extends into the liquid storage tank. The lower end of the conduit is connected to an anti-overflow component to prevent the liquid in the storage tank from flowing back into the heating core through the conduit.

7. The electronic heating device according to claim 6, characterized in that, The spill prevention component includes: The mounting cylinder is open at the top, and the top of the mounting cylinder is sleeved around the lower end of the conduit. A check ball and a compression spring are respectively disposed in the mounting cylinder. One end of the compression spring abuts against the bottom wall of the mounting cylinder, and the other end abuts against the check ball. The check ball is engaged with the end face of the lower end of the conduit. The mounting cylinder has a communication port so that the interior of the mounting cylinder can communicate with the interior of the liquid storage tank.

8. An electronic heating control method, characterized in that, Based on the electronic heating device according to any one of claims 5 to 7, the electronic heating control method includes: The preheating-related parameters are set by the operating components. The preheating-related parameters include at least the preheating mode and the preheating duration. The control module records the corresponding target preheating parameters and generates a preheating start signal. The control module sends the preheating start signal to at least one heating component, driving the corresponding heating component to start preheating; After preheating is completed, the control module automatically switches to the formal heating mode, calls the corresponding target heating temperature, generates a formal heating signal and sends it to at least one heating component, driving the corresponding heating component to formally heat.

9. The electronic heating control method according to claim 8, characterized in that, The driving mechanism corresponds to the heating component's actual heating, including: The temperature detection module collects the real-time temperature of the heating core cavity or the air outlet channel and feeds it back to the control module. The control module calculates the difference between the real-time temperature and the target heating temperature based on a preset power adaptive switching algorithm, and dynamically adjusts the operating power of the heating component. When the real-time temperature is lower than the target temperature, the heating component is controlled to operate at the heating power level of the current formal heating mode; When the real-time temperature is higher than or equal to the target temperature, the heating element is controlled to reduce its power to the heat preservation level.

10. The electronic heating control method according to claim 9, characterized in that, The heating control component operates at the heating power level of the current formal heating mode, including: When the difference between the real-time temperature and the target temperature is greater than the first preset threshold, the heating component is controlled to operate at the first heating level power of the current formal heating mode. When the difference between the real-time temperature and the target temperature is less than or equal to the first preset threshold and greater than the second preset threshold, the heating component is controlled to operate at the second heating level power of the current formal heating mode. When the difference between the real-time temperature and the target temperature is less than or equal to the second preset threshold, the heating component is controlled to operate at the third heating level power of the current formal heating mode. Wherein, the first preset threshold is greater than the second preset threshold, and the power of the first heating level, the power of the second heating level, the power of the third heating level, and the power of the heat preservation level decrease sequentially.

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