A heating element

Abstract

This invention relates to a heating element, comprising a heating section and conductive sections extending laterally from both ends of the heating section. The heating section is laterally divided into a first heating region located in the middle and second heating regions located on both sides of the first heating region. The cross-sectional area of ​​the heating segment in the first heating region is larger than the cross-sectional area of ​​the heating segment in the second heating region. According to the heating element of this invention, the cross-sectional area of ​​the heating segment in the middle of the heating element is larger than the cross-sectional area of ​​the heating segments on both sides, thereby lowering the temperature of the first heating region in the middle and raising the temperature of the second heating regions on both sides. This matches the oil guiding speed at different positions of the oil guide body, thereby avoiding the occurrence of dry burning and core scorching due to excessively high temperature at the center of the heating section but slow oil guiding speed in the middle of the oil guide body.

Description

Technical Field

[0001] This invention belongs to the field of electronic atomization technology, and particularly relates to heating elements. Background Technology

[0002] The heating mesh used in current electronic atomizers typically includes a regular heating wire and conductive parts at both ends of the heating wire. The spacing between each heating segment in the heating wire is equal, resulting in uneven heating temperature during heating. That is, the heat is too concentrated in the middle of the heating wire, causing the temperature at the center of the heating wire to be high, while the temperature at the sides of the heating wire near the conductive parts is low.

[0003] However, for atomizers with two liquid inlet channels, the two ends of the atomizer's wicking body correspond to the two liquid inlet channels respectively. This results in the wicking speed being faster at both ends and slower in the middle. If the heating element heats up at a higher temperature in the middle and a lower temperature at both ends, the wicking speed in the middle of the wicking body may not be able to keep up, leading to dry burning and charring of the coil. Summary of the Invention

[0004] The purpose of this invention is to at least partially address the shortcomings of the prior art and provide a heating element.

[0005] To achieve the above objectives, the present invention provides a heating element, which includes a heating part and conductive parts extending laterally from both ends of the heating part. The heating part is laterally divided into a first heating region located in the middle and a second heating region located on both sides of the first heating region. The cross-sectional area of ​​the heating segment in the first heating region is larger than the cross-sectional area of ​​the heating segment in the second heating region.

[0006] Optionally, the heating element is connected to at least one fixing part on each of its two longitudinal sides, and the cross-sectional area of ​​the fixing part is larger than the cross-sectional area of ​​the first heating segment and the second heating segment, respectively.

[0007] Optionally, the fixing part has an adsorption groove for adsorbing condensate on the other side that is in contact with the oil guide body.

[0008] Optionally, the surface of the heating element that comes into contact with the oil guide body is etched to form an irregular, rough surface.

[0009] Optionally, the cross-sectional area of ​​the conductive part gradually increases from one end near the heating part to the other end, and the minimum cross-sectional area of ​​the conductive part is greater than the cross-sectional area of ​​the heating segment in the heating part.

[0010] Optionally, the heating element is a heating wire that is S-shaped or continuously S-shaped, including a plurality of first heating segments. The plurality of first heating segments are arranged laterally and extend substantially longitudinally. One end of two adjacent first heating segments is connected together through a second heating segment, and the other end is separated from each other. The two free ends of the heating element are respectively connected to two conductive parts.

[0011] The width and / or thickness of the first heating segment in the first heating region is greater than the width and / or thickness of the first heating segment in the second heating region.

[0012] Optionally, the distance between two adjacent first heating segments in the first heating region is D1, and the distance between two adjacent first heating segments in the second heating region is D2, where D1 is greater than D2.

[0013] Optionally, the heating element includes a plurality of rectangular heating wires, which are spaced apart laterally and connected in series between two conductive elements; each heating wire includes two first heating segments that extend longitudinally and are parallel to each other, and the two ends of the two first heating segments are respectively connected to each other through a second heating segment.

[0014] The width and / or thickness of the first heating segment of the heating wire in the first heating region is greater than the width and / or thickness of the first heating segment of the heating wire in the second heating region.

[0015] Optionally, the distance between the two first heating segments of the heating wire in the first heating region is D3, and the distance between the two first heating segments of the heating wire in the second heating region is D4, where D3 is greater than D4.

[0016] Optionally, the spacing between two adjacent heating wires in the first heating region is D5, and the spacing between two adjacent heating wires in the second heating region is D6, where D5 is greater than D6.

[0017] Optionally, the cross-sectional area of ​​each of the first heating segments gradually decreases from the middle to both ends.

[0018] Optionally, each of the second heating segments is connected to a fixing part.

[0019] Optionally, the fixing part extends longitudinally.

[0020] Optionally, a portion of the fixing part extends obliquely along one end close to the heating element, and another portion of the fixing part extends obliquely along the other end close to the heating element.

[0021] Optionally, the second heating segment has an arc shape that bulges outward from the center.

[0022] Optionally, the heating element includes a plurality of rhomboid heating wires, which are connected in series in the transverse direction between the two conductive elements; the width and / or thickness of the heating wires in the first heating region is greater than the width and / or thickness of the heating wires in the second heating region.

[0023] Optionally, each of the heating wires has a diamond-shaped hole, the maximum horizontal spacing of the diamond-shaped holes of the heating wires in the first heating region is D7, and the maximum horizontal spacing of the diamond-shaped holes of the heating wires in the second heating region is D8, where D7 is greater than D8.

[0024] Optionally, the short axis of the heating wires is arranged laterally, the long axis is arranged longitudinally, and each heating wire is connected to a fixing part at both ends of the long axis.

[0025] According to the heating element of the present invention, the cross-sectional area of ​​the heating section in the middle of the heating element is larger than the cross-sectional area of ​​the heating sections on both sides, thereby reducing the temperature of the first heating area in the middle and increasing the temperature of the second heating areas on both sides, so as to match the oil guiding speed at different positions of the oil guide body, thereby avoiding the occurrence of dry burning and core scorching due to the excessively high temperature at the center of the heating element but the slow oil guiding speed in the middle of the oil guide body. Attached Figure Description

[0026] 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 these drawings without creative effort.

[0027] Figure 1 This is a front structural diagram of an embodiment of the heating element of the present invention;

[0028] Figure 2 This is a three-dimensional structural diagram of the back of an embodiment of the heating element of the present invention;

[0029] Figure 3 for Figure 1 A schematic diagram of the structure of the heating element during mass production;

[0030] Figure 4 for Figure 1 A schematic diagram of the actual assembly of the heating element shown;

[0031] Figure 5 for Figure 1 Alternative embodiments of the heating element shown;

[0032] Figure 6 for Figure 5 A schematic diagram of the actual assembly of the heating element shown;

[0033] Figure 7 This is a schematic diagram of another embodiment of the heating element of the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of another embodiment of the heating element of the present invention;

[0035] Figure 9 This is a schematic diagram of the surface microstructure of the heating element before etching.

[0036] Figure 10 This is a schematic diagram of the rough surface microstructure of the heating element after etching treatment according to the present invention;

[0037] Main component description:

[0038] 100. Heating element; 101. Etched area; 102. Frame area; 103. Connection point; 200. Atomizing base; 201. Atomizing chamber; 300. Support body; A. First heating area; B. Second heating area;

[0039] 10. Heating element; 11. First heating section; 12. Second heating section; 13. Fixing part; 131. Adsorption groove; 132. Edge part; 133. Opening part; 14. Heating wire; 15. Series connection part;

[0040] 20. Conductive part; 21. Contact area; 30. Extension. Detailed Implementation

[0041] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," and "radial," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] Please see Figure 1 This invention provides a heating element 100, which includes a heating part 10 and conductive parts 20 extending laterally from both ends of the heating part. In practical applications, the heating element 100 is assembled into the atomization assembly of an atomizer, fitting or embedding itself on the atomization surface of the oil guide body in the atomization assembly. The conductive parts 20 are electrically connected to the electrodes of the atomizer, thereby being electrically connected to the power supply and control circuit through the electrodes. The control circuit controls the power supply to supply power to the heating element 100, so that the heating part 10 of the heating element 100 heats and atomizes the atomized liquid absorbed in the oil guide body to generate an aerosol that can be inhaled by the user.

[0045] In this embodiment, the heating element 10 is applied to an atomizer with two oil inlet channels, located at opposite ends of the oil guide body. Therefore, the oil guiding velocity is high at both ends of the oil guide body, and low in the middle. The heating element 10 is laterally divided into a first heating region A in the middle and second heating regions B on either side of the first heating region A. The cross-sectional area of ​​the heating segment in the first heating region A is larger than that in the second heating region B. This increases the resistance of the heating segments at both ends of the heating element 10, raising the temperature at both ends when the heating element 100 is energized, thus matching the excessive oil guiding velocity at both ends of the oil guide body. Conversely, it lowers the resistance of the heating segment in the middle of the heating element 10, reducing the temperature in the middle when the heating element 100 is energized, thus matching the slow oil guiding velocity in the middle of the oil guide body. This avoids the dry burning and scorching phenomenon caused by excessively high temperature at the center of the heating element 10 coupled with a slow oil guiding velocity in the middle of the oil guide body.

[0046] Specifically, the heating element 10 is a heating wire that is S-shaped or continuously S-shaped, including a plurality of first heating segments 11. The plurality of first heating segments 11 are arranged laterally at intervals and extend substantially longitudinally. One end of two adjacent first heating segments 11 is connected together through a second heating segment 12, and the other end is separated from each other. The two free ends of the heating element 10 are respectively connected to two conductive parts 20. The cross-sectional area of ​​the first heating segment 11 in the first heating region A is greater than the cross-sectional area of ​​the first heating segment 11 in the second heating region B, that is, the width d1 of the first heating segment 11 in the first heating region A is greater than the width d2 of the first heating segment 11 in the second heating region B, so that the resistance of the first heating segment 11 in the first heating region A is less than the resistance of the first heating segment 11 in the second heating region B, so as to adapt to the oil guiding speed at different positions of the oil guide body and avoid the occurrence of dry burning and scorching.

[0047] Of course, the thickness of the first heating segment 11 in the first heating region A can be made greater than the thickness of the first heating segment 11 in the second heating region B, or the width and thickness of the first heating segment 11 in the first heating region A can be made greater than the width and thickness of the first heating segment 11 in the second heating region B, so as to achieve a cross-sectional area of ​​the first heating segment 11 in the first heating region A that is greater than the cross-sectional area of ​​the first heating segment 11 in the second heating region B.

[0048] It should be noted that in other embodiments, the cross-section of the first heating segment 11 can also be circular or elliptical. In this case, the resistance of the first heating segment 11 in different regions can be adjusted by limiting the radius of the first heating segment 11 in different regions, so as to adapt to the oil guiding speed at different positions of the oil guide body.

[0049] Furthermore, the distance between two adjacent first heating segments 11 in the first heating region A is D1, and the distance between two adjacent first heating segments 11 in the second heating region B is D2, where D1 is greater than D2. Thus, when the heating element 100 is energized, the larger distance between the two first heating segments 11 in the middle first heating region A of the heating part 10 reduces the heat generated per unit area of ​​the first heating region A, lowering its temperature. Conversely, the smaller distance between the two first heating segments 11 in the two second heating regions B increases the heat generated per unit area of ​​the second heating region B, raising its temperature. This reduces the temperature difference between the middle and sides of the heating part 10, making the temperature distribution in the heating part 10 more uniform along the lateral direction, or ensuring that the temperature in the two second heating regions B is higher than the temperature in the middle first heating region A. This improves the atomization effect of the heating element 100 and prevents dry burning and scorching due to excessively high local temperatures.

[0050] Furthermore, the cross-sectional area of ​​each first heating segment 11 can gradually decrease from the middle to both ends of the longitudinal direction. That is, the width of the middle part of the first heating segment 11 is H1, and the width of both ends of the first heating segment 11 is H2. H1 is greater than H2, that is, the resistance at the middle position of the first heating segment 11 is less than the resistance at its two ends. With this structure, when the voltage applied to the conductive parts 20 at both ends of the heating element 100 remains unchanged, the heating power at the center of the first heating segment 11 is slightly reduced, while the heating power at both ends of the first heating segment 11 is slightly increased. This makes the temperature distribution of the heating element 10 more uniform along the longitudinal direction. Combined with the spacing of each first heating segment 11, this makes the overall temperature of the entire heating element 10 more uniform.

[0051] Of course, the thickness of the middle part of the first heating segment 11 can be greater than the thickness of its two ends, or the thickness and width of the middle part of the first heating segment 11 can be greater than the thickness and width of its two ends, respectively, so that the cross-sectional area of ​​the first heating segment 11 gradually decreases from the middle to both ends, thereby achieving the purpose of the resistance value at the middle position of the first heating segment 11 being less than the resistance value at its two ends. In this embodiment, the width of the second heating segment 12 is the same as the width H2 at both ends of the first heating segment 11, and the second heating segment 12 is an arc shape that bulges outward in the longitudinal direction in the middle, so as to improve the uniform distribution of heat in the longitudinal direction when the heating part 10 is heating.

[0052] To provide sufficient support strength for the heating element, at least one fixing part 13 is connected to each of the two longitudinally located sides of the heating element 10. The cross-sectional area of ​​the fixing part 13 is at least 10% larger than the cross-sectional area of ​​the heating segment in the heating element 10, preferably 50%, to ensure that when the heating element 100 is energized, only the heating element 10 heats up, while the fixing part 13 does not heat up or generates only a small amount of heat. Each second heating segment 12 is connected to a fixing part 13, which extends longitudinally to improve the support strength for the heating element 10. In other embodiments, the number of fixing parts 13 can be selected as needed; for example, while ensuring the support strength for the heating element 10, a fixing part 13 can be provided at intervals of one second heating segment 12.

[0053] The width of the fixing part 13 is greater than the width of the heating section in the heating part 10. For example, the width of the fixing part 13 is between 0.15mm and 2mm, preferably 1.5mm. When the heating element 100 is assembled into the atomizer, the heating element 100 is clamped and fixed in the vertical direction by the oil guide body and the support body 300 to form a heating assembly. The heating assembly is installed at the top of the atomizing base 200. The support body 300 has a channel corresponding to the position of the heating part 10 that communicates with the atomizing cavity 201 at the top of the atomizing base 200. At this time, the support body 300 supports the conductive part 20 and the fixing part 13. The fixing part 13 provides sufficient support strength for the heating part 10, so that the heating part 10 is not easily deformed and is completely attached to the oil guide body, and keeps the heating part 10 flat to ensure that the heating part 10 does not separate from the oil guide body.

[0054] Combination Figure 2 As shown, the fixing part 13 can form an adsorption groove 131 for adsorbing condensate on the side opposite to the oil guide body. That is, the fixing part 13 has an adsorption groove 131 on the side away from the oil guide body (i.e., the back side). After the atomizer is drawn in, since the temperature of the fixing part 13 is much lower than the temperature of the heating part, the surface of the fixing part 13 and the connection between the fixing part 13 and the heating part 10 are places where too much condensate is formed. In this embodiment, the heating element 100 can use the surface tension of the adsorption groove 131 to adsorb the condensate formed on the surface of the heating part 10 and the fixing part 13 into the adsorption groove 131, thereby avoiding the oil splattering phenomenon that is easily caused by too much condensate on the surface of the heating part 10 and reducing the occurrence of oil splattering.

[0055] Furthermore, the fixing part 13 has an edge part 132 protruding on the side away from the oil guide body, and the edge part 132 surrounds an adsorption groove 131. An opening 133 is formed at one end of the adsorption groove 131 adjacent to the heating part 10; that is, the opening 133 of the adsorption groove 131 is located at the connection between the fixing part and the heating part, thereby improving the adsorption effect of the adsorption groove 131 on adsorbing condensate. Of course, in other embodiments, the adsorption groove 131 may also be a through hole structure forming through the front side of the fixing part 13.

[0056] In addition, the height of the protruding edge portion 132 is less than 1 mm, that is, the height difference between the fixing portion 13 and the heating portion 10 is less than 1 mm, so that when the heating element 100 is clamped between the oil guide body and the support body 300, the heating portion 10 fits more closely to the atomizing surface of the oil guide body.

[0057] Preferably, the surface of the heating element 10 that contacts the oil guide body (i.e., the front side) is etched to form an irregular rough surface. This structure increases the heating surface area of ​​the heating element 10 in contact with the atomizing liquid, improves the atomization effect during heating, and reduces the oil splattering phenomenon due to the increased heating surface area.

[0058] In this embodiment, the cross-sectional area of ​​the conductive part 20 gradually increases from one end near the heating part 10 to the other end, and the minimum cross-sectional area of ​​the conductive part 20 is greater than the cross-sectional area of ​​the heating segment in the heating part 10. That is, the minimum width d3 of the conductive part 20 is greater than the width d1 of the first heating segment 11 in the heating part 10.

[0059] Thus, by defining a gradually changing cross-sectional area of ​​the conductive part 20, the heating element 100 of the present invention ensures that the conductive part 20 has sufficient support strength for the heating part 10, while also reducing the amount of heat generated by the conductive part 20 when the heating element 100 is energized. Furthermore, since the end of the conductive part 20 connected to the heating part 10 is the smaller end, the conduction of heat from the heating part 10 to the conductive part 20 is reduced, causing the generated heat to concentrate in the area of ​​the heating part 10, resulting in better atomization and improved heat utilization efficiency.

[0060] To facilitate contact between the conductive part 20 and the electrode, the end of the conductive part 20 away from the heating part 10 is arc-shaped, thereby forming a circular contact area 21 that matches the size of the electrode being contacted. This ensures the contact area between the conductive part 20 and the electrode, as well as the overall strength of the heating element 100. Preferably, the conductive part 20 may have at least one perforation outside the contact area 21 to further reduce the heat conduction from the heating part 10 to the conductive part 20.

[0061] In this embodiment, the heating element 100 is a whole formed by etching a metal sheet. For example, conductive metal parts such as nickel sheet, nickel-chromium sheet, iron-chromium-aluminum sheet, stainless steel sheet, titanium sheet or alloy sheet can be used. The material can be selected according to the actual situation. The thickness of the heating element 100 is 0.05-0.2mm, preferably 0.1mm.

[0062] Combination Figure 3 As shown, in actual manufacturing, a large piece of metal is selected and divided into etching areas 101, forming areas corresponding to the heating element 100, and border areas 102 surrounding each forming area and etching area 101. The specific manufacturing steps are as follows: a first etching is performed to protect the forming areas while etching away the etching areas 101. The heating element 100 formed in the forming areas is connected to the border area 102 through its extensions 30 at both ends. Then, a second etching is performed to etch at least one side of the heating element 100 to obtain a rough surface. Finally, each heating element 100 can be cut from the metal sheet using automated cutting equipment to achieve mass production. The microstructure of the front side of the heating element 100 formed by the first etching of the metal sheet is shown below. Figure 9 As shown, the surface is relatively smooth; after the second etching process, a rough surface is formed on the front side of the heating element 10. At this time, the microstructure of the rough surface of the heating element 100 is as follows: Figure 10As shown; via Figure 9 and Figure 10 As can be seen from the comparison, the rough surface of the heating part 10 in this embodiment increases the heating surface area in contact with the atomizing liquid and increases the number of nucleation points.

[0063] It should be noted that only the front side of the heating element 10 can be etched to form a rough surface. In this embodiment, in order to simplify the manufacturing process, the entire front side of the heating element 100 is etched directly.

[0064] In this section, rectangular or triangular connection points 103 are formed in the frame area 102 corresponding to the positions of each extension 30. The extension 30 is connected to the frame area 102 through the connection points 103, and the contact width between the extension 30 and the connection point 103 is greater than 0.15mm or less than 3mm, preferably 2mm. This reduces the cutting marks on the extension 30, and the cutting marks are located on the extension 30, so that the cutting marks avoid the area in contact with the electrode, ensuring stable contact between the conductive part 20 and the electrode.

[0065] Furthermore, combined Figure 4 As shown, when the heating element 100 is assembled into the atomizer, it is clamped and fixed in the vertical direction by the oil guide body and the support body 300 to form a heating assembly. The heating assembly is installed at the top of the atomizing base 200. The support body 300 has a channel corresponding to the position of the heating part 10, which communicates with the atomizing chamber 201 at the top of the atomizing base 200. The support body 300 is used to support the conductive part 20 and the fixing part 13 so that the heating part 10 is completely attached to the oil guide body, keeping the heating part 10 flat and ensuring that the heating part 10 does not separate from the oil guide body.

[0066] Furthermore, the ends of the two fixing parts 13 can protrude from the edge of the support body 300. By bending the protruding parts toward the support body 300, they can be clamped and locked to both sides of the support body 300 to better fix the heating element 100 and make the heating element 10 less prone to deformation and displacement.

[0067] Figure 5 for Figure 1 The heating element 100 shown is an alternative embodiment. In this embodiment, the heating element 100 is the same as... Figure 1 The main difference of the heating element 100 shown is that, in order to provide sufficient support strength for the heating part 10, in this embodiment, one part of the fixing part 13 is bent and extended obliquely along one end close to the heating element 100, and the other part of the fixing part 13 is bent and extended obliquely along the other end close to the heating element 100.

[0068] Combination Figure 6As shown, this embodiment targets an atomizer without a support structure 300, where the heating element 100 is directly mounted on the top of the atomizing base 200. Since the atomizing chamber 201 needs to extend through both sides to connect with the atomizer's outlet pipe, the top surface of the atomizing base 200 is divided into left and right support surfaces by the atomizing chamber 201. Specifically, the fixing part 13 located on the left half of the heating element 100 extends obliquely to the left, thus being supported by the left support surface of the atomizing base 200. The fixing part 13 located on the right half of the heating element 100 extends obliquely to the right, thus being supported by the right support surface of the atomizing base 200. In this way, the top surface of the atomizing base 200 supports the conductive part 20 and the fixing part 13, ensuring that the heating element 10 is completely attached to the oil guide body, keeping the heating element 10 flat, and ensuring that the heating element 10 does not separate from the oil guide body.

[0069] Please see Figure 7 The diagram shown is a structural schematic of another embodiment of the heating element 100 of the present invention. In this embodiment, the heating element 100 is compared with... Figure 1 The main difference of the heating element 100 shown is that the heating part 10 includes a plurality of rectangular heating wires 14, which are arranged at intervals along the lateral direction and connected in series between two conductive parts 20; each heating wire 14 includes two first heating segments 11 that extend longitudinally and are parallel to each other, and the two ends of the two first heating segments 11 are respectively connected to the corresponding second heating segments 12; in this embodiment, the second heating segments 12 are straight segments, and each second heating segment 12 is connected to a fixing part 13 that extends longitudinally.

[0070] The width d1 of the first heating segment 11 of the heating wire 14 in the first heating region A is greater than the width d2 of the first heating segment 11 of the heating wire 14 in the second heating region B. That is, the cross-sectional area of ​​the first heating segment 11 in the first heating region A is greater than the cross-sectional area of ​​the first heating segment 11 in the second heating region B. This makes the resistance of the first heating segment 11 in the first heating region A less than the resistance of the first heating segment 11 in the second heating region B, so as to adapt to the oil guiding speed at different positions of the oil guide body and avoid the occurrence of dry burning and scorching.

[0071] Of course, the thickness of the first heating segment 11 in the first heating region A can be made greater than the thickness of the first heating segment 11 in the second heating region B, or the width and thickness of the first heating segment 11 in the first heating region A can be made greater than the width and thickness of the first heating segment 11 in the second heating region B, so as to achieve a cross-sectional area of ​​the first heating segment 11 in the first heating region A that is greater than the cross-sectional area of ​​the first heating segment 11 in the second heating region B.

[0072] Specifically, the distance between the two first heating segments 11 of the heating wire 14 in the first heating region A is D3, and the distance between the two first heating segments 11 of the heating wire 14 in the second heating region B is D4, where D3 is greater than D4. Therefore, when the heating body 100 is energized and heats up, the larger distance between the two first heating segments 11 of the heating wire 14 in the first heating region A reduces the heat generated per unit area of ​​the first heating region A, thus lowering the temperature of the first heating region A. Conversely, the smaller distance between the two first heating segments 11 of the heating wire 14 in the two second heating regions B increases the heat generated per unit area of ​​the second heating region B, thus raising the temperature of the second heating region B. This reduces the temperature difference between the middle and sides of the heating part 10, making the temperature distribution of the heating part 10 more uniform along the lateral direction, or making the temperature of the heating part 10 in the two second heating regions B higher than the temperature in the middle first heating region A.

[0073] In this design, adjacent heating wires 14 are connected by a series connection 15, with both ends of the series connection 15 connected to the middle of the first heating segment 11 on the corresponding side of each of the two adjacent heating wires 14. This means that the straight line containing the series connection 15 divides the heating wires 14 into two symmetrical sections, with the upper and lower sections of each heating wire 14 connected in parallel, and the heating wires 14 connected in series. Furthermore, the smooth transition between the first heating segment 11 and the second heating segment 12 facilitates even heat distribution and prevents heat accumulation and splattering at sharp corners.

[0074] Furthermore, the distance between two adjacent heating wires 14 in the first heating region A is greater than the distance between two adjacent heating wires 14 in the second heating region B. That is, the length of the series section 15 in the first heating region A is D5, and the length of the series section 15 in the second heating region B is D6, and D5 is greater than D6. Thus, when the heating element 100 is energized and heats up, the temperature of the first heating region A is further finely adjusted to decrease, and the temperature of the second heating region B is finely adjusted to increase, so that the temperature in the middle of the heating part 10 tends to be similar to the temperature on both sides, and the temperature of the heating part 10 is more uniformly distributed in the transverse direction.

[0075] It should be noted that the cross-sectional area of ​​each first heating segment 11 in this embodiment can also adopt a gradual structure, that is, the width and / or thickness of the first heating segment 11 gradually decreases from the middle to both ends, so that the temperature of the heating part 10 is more uniformly distributed along the longitudinal direction.

[0076] Preferably, the width of the series portion 15 in the first heating region A can be set to be greater than the width of the series portion 15 in the second heating region B, thereby further reducing the temperature at the center of the heating part 10 and promoting uniform temperature across the entire heating part 10.

[0077] Please see Figure 8The diagram shown is a structural schematic of another embodiment of the heating element 100 of the present invention. In this embodiment, the heating part 10 of the heating element 100 includes a plurality of rhomboid heating wires 14. The plurality of heating wires 14 are connected in series in the transverse direction between two conductive parts 20. Each heating wire 14 has a rhomboid hole. The maximum transverse spacing of the rhomboid holes of the heating wires 14 in the first heating region A is D7, and the maximum transverse spacing of the rhomboid holes of the heating wires 14 in the second heating region B is D8. D7 is greater than D8.

[0078] When the heating element 100 is powered on, it reduces the heat generated per unit area of ​​the first heating region A, thus lowering the temperature of the first heating region A; while it increases the heat generated per unit area of ​​the second heating region B, thus raising the temperature of the second heating region B. This reduces the temperature difference between the middle and sides of the heating part 10, making the temperature distribution of the heating part 10 more uniform along the lateral direction, or making the temperature of the second heating region B on both sides of the heating part 10 higher than the temperature of the first heating region A in the middle.

[0079] Specifically, in this embodiment, the heating wire 14 includes two parallel first heating segments 11 and two parallel second heating segments 12, which together form a rhomboid heating wire 14. The cross-sectional areas of the first heating segments 11 and the second heating segments 12 in each heating wire 14 are the same, that is, the width and thickness of the first heating segments 11 and the second heating segments 12 in the same heating wire 14 are the same. Moreover, the width d1 of the heating segment in the first heating region A is greater than the width d2 of the heating segment in the second heating region B, and less than the minimum width d3 of the conductive part 20. This allows the heat generated when the heating body 100 heats up to be concentrated in the heating part 10 region, while the temperature in the middle of the heating part 10 decreases and the temperature at both ends increases to adapt to the oil guiding speed at different positions of the oil guide body. Of course, the thickness of the heating segment in the first heating region A can be made greater than the thickness of the heating segment in the second heating region B, or the thickness and width of the heating segment in the first heating region A can be made greater than the thickness and width of the heating segment in the second heating region B, so as to achieve a cross-sectional area of ​​the heating segment in the first heating region A that is greater than the cross-sectional area of ​​the heating segment in the second heating region B.

[0080] A plurality of heating wires 14 are arranged laterally along their minor axis and longitudinally along their major axis. In this embodiment, the heating wires 14 are directly connected in series, and the connection point between any two adjacent heating wires 14 is located on the longitudinal centerline of the heating element 100. This ensures that the upper and lower parts of the heating wire 14 generate the same amount of heat in the longitudinal direction, which is beneficial for uniform heat distribution. Of course, in other embodiments, the heating wires 14 can also be arranged at intervals and connected in series sequentially.

[0081] In this embodiment, each heating wire 14 has a fixing part 13 connected to both ends of its long axis. The fixing part 13 extends longitudinally, that is, each fixing part 13 forms a Y-shaped structure with the first heating segment 11 and the second heating segment 12 connected to it, thereby improving the support strength of the heating part 10.

[0082] Preferably, the cross-sectional area of ​​the first heating segment 11 and the second heating segment 12 in this embodiment can also be set with a gradual structure, that is, the width and / or thickness of the first heating segment 11 and the second heating segment 12 gradually shrink from the end away from the fixed part 13 to the direction closer to the fixed part 13, thereby reducing the temperature of the heating part 10 at the transverse centerline position, so that the temperature of the heating part 10 along the longitudinal direction is more uniform.

[0083] It should be noted that, Figure 5-8 The heating element 100 shown does not have a rough surface; this is only for the purpose of more concisely illustrating the specific shape and structure of the heating element 100, and does not represent [the intended meaning]. Figure 5-8 The heating element 100 in the middle does not have a rough surface structure.

[0084] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0085] The above is a description of the technical solution provided by the present invention. For those skilled in the art, based on the ideas of the embodiments of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A heat generating body, characterized by comprising: The heating element is applied to an atomizer with two oil inlet channels, and the heating element is attached to or embedded in the atomizing surface of the oil guide body in the atomizing assembly of the atomizer. The two oil inlet channels are located at opposite ends of the oil guide body. The heating element includes a heating part and conductive parts extending laterally from both ends of the heating part. The heating part is divided laterally into a first heating region located in the middle and a second heating region located on both sides of the first heating region. The cross-sectional area of ​​the heating segment in the first heating region is larger than the cross-sectional area of ​​the heating segment in the second heating region. At least one fixing part is connected to each of the two longitudinal sides of the heating part. The cross-sectional area of ​​the fixing part is larger than the cross-sectional areas of the first heating segment and the second heating segment, respectively. An adsorption groove for adsorbing condensate is formed on the other side of the fixing part that is in contact with the oil guide body. The adsorption groove is a through hole structure that penetrates the front of the fixing part.

2. The heat generating body according to claim 1, wherein The surface of the heating element that comes into contact with the oil guide is etched to form an irregular, rough surface.

3. The heating element as described in claim 1, characterized in that, The cross-sectional area of ​​the conductive part gradually increases from one end near the heating part to the other end, and the minimum cross-sectional area of ​​the conductive part is greater than the cross-sectional area of ​​the heating segment in the heating part.

4. The heating element as described in claim 1, characterized in that, The heating element is a heating wire that is S-shaped or continuously S-shaped and includes several first heating segments. The several first heating segments are arranged laterally and extend substantially longitudinally. One end of two adjacent first heating segments is connected together through a second heating segment, and the other end is separated from each other. The two free ends of the heating element are respectively connected to two conductive parts. The width and / or thickness of the first heating segment in the first heating region is greater than the width and / or thickness of the first heating segment in the second heating region.

5. The heating element as described in claim 4, characterized in that, The distance between two adjacent first heating segments in the first heating region is D1, and the distance between two adjacent first heating segments in the second heating region is D2, where D1 is greater than D2.

6. The heating element as described in claim 1, characterized in that, The heating element includes a plurality of rectangular heating wires, which are spaced apart laterally and connected in series between two conductive elements. Each heating wire includes two first heating segments that extend longitudinally and are parallel to each other, and the two ends of the two first heating segments are respectively connected to a second heating segment. The width and / or thickness of the first heating segment of the heating wire in the first heating region is greater than the width and / or thickness of the first heating segment of the heating wire in the second heating region.

7. The heating element as described in claim 6, characterized in that, The distance between the two first heating segments of the heating wire in the first heating region is D3, and the distance between the two first heating segments of the heating wire in the second heating region is D4, where D3 is greater than D4.

8. The heating element as described in claim 6, characterized in that, The distance between two adjacent heating wires in the first heating region is D5, and the distance between two adjacent heating wires in the second heating region is D6, where D5 is greater than D6.

9. The heating element according to any one of claims 4 to 8, characterized in that, The cross-sectional area of ​​each of the first heating sections gradually decreases and extends from the middle to both ends.

10. The heating element as described in claim 9, characterized in that, Each of the second heating segments is connected to a fixing part.

11. The heating element as claimed in claim 10, characterized in that, The fixing part extends longitudinally.

12. The heating element as described in claim 10, characterized in that, One portion of the fixing part extends obliquely along one end close to the heating element, and the other portion of the fixing part extends obliquely along the other end close to the heating element.

13. The heating element as described in claim 10, characterized in that, The second heating section is an arc shape that bulges outward from the center.

14. The heating element as described in claim 4, characterized in that, The heating element includes several diamond-shaped heating wires, which are connected in series in the transverse direction between the two conductive elements; the width and / or thickness of the heating wires in the first heating region is greater than the width and / or thickness of the heating wires in the second heating region.

15. The heating element as described in claim 14, characterized in that, Each of the heating wires has a diamond-shaped hole. The maximum horizontal spacing of the diamond-shaped holes of the heating wires in the first heating region is D7, and the maximum horizontal spacing of the diamond-shaped holes of the heating wires in the second heating region is D8, where D7 is greater than D8.

16. The heating element as claimed in claim 14, characterized in that, The short axis of each heating wire is arranged laterally, and the long axis is arranged longitudinally, with a fixing part connected to each end of the long axis of each heating wire.

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