CN217284771U

CN217284771U - Heating body

Info

Publication number: CN217284771U
Application number: CN202220055991.3U
Authority: CN
Inventors: 张海波; 张青; 翟公高; 潘世万
Original assignee: Shenzhen Cilicon Technology Co ltd
Current assignee: Shenzhen Cilicon Technology Co ltd
Priority date: 2022-01-10
Filing date: 2022-01-10
Publication date: 2022-08-26
Anticipated expiration: 2032-01-10

Abstract

The utility model relates to a heat-generating body, the heat-generating body is dull and stereotyped sheet structure, including the portion and the edge of generating heat the horizontal both ends in portion of generating heat extend the conductive part that forms, the portion of generating heat is used for at least forming anomalous rough surface with the surface through the etching of leading the contact of oil body. The utility model discloses the heat-generating body is through forming rough surface on the portion that generates heat to increased the surface area that generates heat of portion and the contact of atomized liquid, improved the atomization effect when generating heat, the surface fried oil phenomenon can alleviate because of the increase of the surface area that generates heat on the one hand, and on the other hand rough surface has increased the nucleation point, reduces surface energy, so fried oil phenomenon can alleviate.

Description

Heating body

Technical Field

The utility model belongs to the technical field of the electron atomizing, especially, relate to the heat-generating body.

Background

The heating unit used in the present electronic atomizer, the surface of the heating unit contacting with the oil guiding body is a relatively smooth plane, so the heating surface area of the heating part contacting with the atomized liquid is relatively small, when the heating unit generates heat, the temperature of the central position of the heating part is high, the temperature of the two sides of the heating part near the conductive part is low, and the oil frying phenomenon is serious in the atomizing process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve not enough among the prior art to a certain extent at least, provide a heat-generating body.

In order to achieve the above object, the present invention provides a heating body, the heating body is a flat plate structure, including the portion and edge that generates heat the horizontal both ends of portion of generating heat extend the conductive part that forms, the portion that generates heat is used for forming anomalous rough surface through the etching with the surface of leading the contact of oil body at least.

Optionally, the cross-sectional area of the conductive portion gradually increases from one end close to the heat generating portion to the other end, and the minimum cross-sectional area of the conductive portion is larger than the cross-sectional area of the heat generating section in the heat generating portion.

Optionally, the heat generation portion is divided into a first heat generation region located in the middle and second heat generation regions located on two sides of the first heat generation region along the transverse direction, and a distance between two adjacent heat generation sections in the first heat generation region is greater than a distance between two adjacent heat generation sections in the second heat generation region.

Optionally, the heating portion is an S-shaped or continuous S-shaped bent heating wire, and includes a plurality of first heating sections, the plurality of first heating sections are longitudinally spaced and extend substantially in a transverse direction, one end of each of two adjacent first heating sections is connected together through a second heating section, the other end is spaced, and two free ends of the heating portion are respectively connected to the two conductive portions.

Optionally, the heating portion is an S-shaped or continuous S-shaped bent heating wire, and includes a plurality of first heating sections, the plurality of first heating sections are arranged at intervals along the transverse direction and extend along the longitudinal direction, one end of each of two adjacent first heating sections is connected together through a second heating section, the other end is separated from each other, and two free ends of the heating portion are connected to the two conductive portions respectively;

the distance between two adjacent first heating sections in the first heating area is D1, the distance between two adjacent first heating sections in the second heating area is D2, and D1 is larger than D2.

Optionally, the heating portion includes a plurality of rectangular heating wires, and the plurality of heating wires are arranged at intervals along the transverse direction and are sequentially connected in series between the two conductive portions; each heating wire comprises two first heating sections which extend along the longitudinal direction and are opposite in parallel, and two ends of each first heating section are correspondingly connected through a second heating section;

the distance between the two first heating sections of the heating wire in the first heating region is D3, the distance between the two first heating sections of the heating wire in the second heating region is D4, and D3 is larger than D4.

Optionally, the distance between two adjacent heat generating wires in the first heat generating area is D5, the distance between two adjacent heat generating wires in the second heat generating area is D6, and D5 is larger than D6.

Optionally, the cross-sectional areas of the first and second heat generation segments are the same and smaller than the minimum cross-sectional area of the conductive portion.

Optionally, the cross-sectional area of each of the first heat-generating segments gradually decreases from the middle part to the two ends.

Optionally, the heat generating portion is connected to at least one fixing portion at two sides in the longitudinal direction, and the cross-sectional area of the fixing portion is larger than that of the first heat generating section and that of the second heat generating section.

Optionally, one fixing portion is connected to each of the second heat generating segments.

Optionally, the fixing portion extends in a longitudinal direction.

Alternatively, a part of the fixing portion may extend obliquely along one end close to the heat generating body, and another part of the fixing portion may extend obliquely along the other end close to the heat generating body.

Optionally, the second heating section is arc-shaped with a middle part protruding outwards.

Optionally, the heating portion includes a plurality of diamond-shaped heating wires, and the plurality of heating wires are sequentially connected in series between the two conductive portions along the transverse direction;

each heating wire is provided with a diamond-shaped hole, the maximum distance of the diamond-shaped holes of the heating wire in the transverse direction in the first heating area is D7, the maximum distance of the diamond-shaped holes of the heating wire in the transverse direction in the second heating area is D8, and D7 is larger than D8.

Optionally, the short axis direction of the plurality of heating wires is arranged along the transverse direction, the long axis direction is arranged along the longitudinal direction, and two ends of each heating wire in the long axis direction are respectively connected with one fixing part.

Alternatively, the heating element is an integral body formed by etching a metal sheet.

Optionally, the thickness of the heat-generating body is 0.05 to 0.2 mm.

Optionally, at least one hollow hole is further formed in a region of the conductive portion, which is close to the heat generating portion.

The utility model discloses the heat-generating body is used for forming anomalous rough surface through the etching with the surface of leading the contact of oil body through the portion that generates heat to increased the surface area that generates heat and the contact of atomized liquid, improved the atomization effect when generating heat, made the fried oil phenomenon in surface and got to alleviate because of the surface area increase that generates heat on the one hand, on the other hand rough surface has increased the nucleation point, reduces surface energy, so fried oil phenomenon can alleviate.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly introduced, it is obvious that the drawings in the description below are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of a heating element according to an embodiment of the present invention;

FIG. 2 is a schematic configuration view at the time of mass production of the heat-generating body shown in FIG. 1;

FIG. 3 is a schematic view showing an actual assembly of the heat-generating body shown in FIG. 1;

FIG. 4 is an alternative embodiment of the heat-generating body shown in FIG. 1;

FIG. 5 is a schematic view showing an actual assembly of the heat-generating body shown in FIG. 4;

FIG. 6 is a schematic view showing a structure of another embodiment of a heat generating body of the present invention;

FIG. 7 is a schematic structural view of a heating element according to another embodiment of the present invention;

FIG. 8 is a schematic structural view of a heating element according to yet another embodiment of the present invention;

FIG. 9 is a schematic view showing a surface microstructure of a heating element without being subjected to etching treatment;

FIG. 10 is a schematic view showing a microstructure of a rough surface of a heating element after etching treatment according to the present invention;

description of the main elements:

100. a heating element; 101. an etching region; 102. a frame region; 103. a connection point; 200. an atomizing base; 201. an atomizing chamber; 300. a support body; A. a first heat generation region; B. a second heat generation region;

10. a heat generating portion; 11. a first heat generation section; 12. a second heat generation section; 13. a fixed part; 14. a heater; 15. a series section;

20. a conductive portion; 21. a contact region; 30. an extension portion.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to be used for explaining the present invention, but should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In the description of the present invention, it is to 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", "radial", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1, the embodiment of the present invention provides a heat generating body 100, wherein the heat generating body 100 is a flat plate structure, and includes a heat generating portion 10 and a conductive portion 20 formed by extending along two lateral ends of the heat generating portion. In practical application, the heating element 100 is assembled in an atomization assembly of an atomizer, and is attached to or embedded in an atomization surface of an oil guide body in the atomization assembly, the conductive part 20 is electrically connected with an electrode of the atomizer in a contact manner, so that the conductive part is electrically connected with a power supply and a control circuit through the electrode, the control circuit controls the power supply to supply power to the heating element 100, and the heating part 10 of the heating element 100 heats and atomizes atomized liquid absorbed in the oil guide body, so as to generate aerosol which can be sucked by a user.

Wherein, the heating element 100 is used for forming irregular rough surface by etching at least the surface (i.e. front surface) contacting with the oil guiding body, thus the structure increases the heating surface area of the heating part 10 contacting with the atomized liquid, and improves the atomization effect during heating, on one hand, the oil frying phenomenon on the surface is reduced because of the increased heating surface area; on the other hand, the rough surface increases nucleation points and reduces surface energy, so that the oil frying phenomenon is reduced.

Specifically, the cross-sectional area of the conductive portion 20 in the present embodiment gradually increases from one end close to the heat generating portion 10 to the other end, and the minimum cross-sectional area of the conductive portion 20 is larger than the cross-sectional area of the heat generating section in the heat generating portion 10. That is, the minimum width d2 of the conductive portion 20 is larger than the width d1 of the heat generating section in the heat generating portion 10.

Thus, the utility model discloses heat-generating body 100 is through the gradual change structure of injecing the cross-sectional area of conductive part 20, when guaranteeing that conductive part 20 has enough support intensity to the portion of generating heat 10, make heat-generating body 100 when the circular telegram generates heat, conductive part 20 calorific capacity is few, and because the one end that conductive part 20 is connected with the portion of generating heat 10 is less end, consequently reduced the heat conduction of the portion of generating heat 10 to the direction of conductive part 20, make the heat of production concentrate on the portion of generating heat 10 regional, make the atomization effect better, and improved heat utilization efficiency.

To facilitate the contact connection between the conductive portion 20 and the electrode, the end of the conductive portion 20 away from the heat generating portion 10 is arc-shaped, so as to form a circular contact area 21 adapted to the size of the contacted electrode, thus ensuring the contact area between the conductive portion 20 and the electrode and the overall strength of the heat generating body 100. Preferably, the conductive portion 20 is formed with at least one hollow hole at a position outside the contact area 21, so as to further reduce the amount of heat conducted from the heat generating portion 10 to the conductive portion 20.

The heating element 100 of this embodiment is an integral body formed by etching a metal sheet, and for example, a conductive metal member such as a nickel sheet, a nickel-chromium sheet, an iron-chromium-aluminum sheet, a stainless steel sheet, a metal titanium sheet or an alloy sheet is used, and the material thereof may be selected according to actual conditions, and the thickness of the heating element 100 is 0.05 to 0.2mm, preferably 0.1 mm.

As shown in fig. 2, in actual manufacturing, a whole large-sized metal sheet is selected, the metal sheet is divided into an etching area 101, a forming area surrounded by the etching area 101 and corresponding to the heating element 100, and a frame area 102 surrounding each forming area and the etching area 101. The specific manufacturing steps are as follows: etching for the first time, wherein the etching area 101 is etched and removed while the forming area is protected, and the heating elements 100 formed in the forming area are respectively connected with the frame area 102 through the extending parts 30 at the two ends of the heating elements; then, the second etching is performed to etch at least one surface of the heating elements 100 to obtain a rough surface, and finally, the heating elements 100 can be cut from the metal sheet by automatic cutting equipment, so that mass production is realized. When the metal sheet is etched for the first time to form the front microstructure of the heating element 100 as shown in fig. 9, it is a relatively smooth plane; after the second etching treatment, the front surface of the heat generating element 10 is roughened, and the microstructure of the roughened surface of the heat generating element 100 is shown in fig. 10; as can be seen from a comparison between fig. 9 and 10, the rough surface of the heat generating portion 10 in the present embodiment increases the heat generating surface area in contact with the atomized liquid and increases the nucleation points.

Note that only the front surface of the heat generating element 10 may be etched to form a rough surface, and in this embodiment, the entire front surface of the heat generating element 100 is directly etched to simplify the manufacturing process.

The frame area 102 is formed with rectangular or triangular connection points 103 corresponding to the positions of the extension portions 30, the extension portions 30 are connected with the frame area 102 through the connection points 103, and the contact width between the extension portions 30 and the connection points 103 is greater than 0.15mm or less than 3mm, preferably 2mm, so that the cutting traces on the extension portions 30 are reduced, and the cutting traces are located on the extension portions 30, so that the cutting traces avoid the contact area with the electrodes, and the stable contact between the conductive portions 20 and the electrodes is ensured. In addition, the minimum width d2 of the conductive portion 20 is greater than the width d3 of the extension portion 30.

Further, as shown in fig. 3, in order to provide the heat generating portion 10 with sufficient supporting strength, the heat generating portion 10 of the present embodiment is connected with at least one fixing portion 13 at each of two sides in the longitudinal direction. When the heating element 100 is assembled in the atomizer, the heating element 100 is vertically clamped and fixed by the oil guide body and the support 300 to form a heating assembly, the heating assembly is mounted on the top end of the atomizing base 200, a channel communicated with the atomizing cavity 201 on the top end of the atomizing base 200 is opened at the position of the support 300 corresponding to the heating part 10, the support 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, the heating part 10 is kept flat, and the heating part 10 is ensured not to be separated from the oil guide body.

Further, the ends of the both side fixing parts 13 may protrude from the edge of the supporting body 300, and the protruding parts are bent toward the supporting body 300 to be clamped and fastened to both sides of the supporting body 300, so as to fix the heating body 100 more preferably, and to make the heating body 10 less likely to deform and displace.

The heating part 10 of the heating element 100 of the present invention may be in various shapes with uniform heating, including but not limited to, grid, stripe, S-shape, zigzag, wave, zigzag, spiral, circular or rectangular; the heat generating portion 10 is divided into a first heat generating region a located in the middle and second heat generating regions B located on both sides of the first heat generating region a in the lateral direction, and the distance between two adjacent heat generating sections in the first heat generating region a is greater than the distance between two adjacent heat generating sections in the second heat generating region B.

Specifically, referring to fig. 1, the heat generating portion 10 of the present embodiment is an S-shaped or continuous S-shaped bent heat generating wire, and includes a plurality of first heat generating segments 11, the plurality of first heat generating segments 11 are arranged at intervals along the transverse direction and extend substantially along the longitudinal direction, one end of each of two adjacent first heat generating segments 11 is connected together through a second heat generating segment 12, the other end is separated from each other, and two free ends of the heat generating portion 10 are respectively connected to two conductive portions 20; the distance between two adjacent first heat-generating sections 11 in the first heat-generating region a is D1, the distance between two adjacent first heat-generating sections 11 in the second heat-generating region B is D2, and D1 is greater than D2.

Thus, when the heating element 100 is powered on to generate heat, the distance between the two first heating sections 11 in the middle first heating area a of the heating part 10 is larger, so that the heat generated in the unit area of the first heating area a is reduced, and the temperature of the first heating area a is lowered; the distance between the two first heating sections 11 in the second heating areas B on the two sides is smaller, so that the heat generated by the second heating areas B in unit area is increased, the heat generated by the second heating areas B is increased, and the temperature of the second heating areas B is increased, thereby reducing the temperature difference between the temperature in the middle of the heating part 10 and the temperature on the two sides, and enabling the temperature of the heating part 10 to be more uniform along the transverse distribution; when this embodiment heat-generating body 100 is being applied to in the atomizer that has two inlet channel, the second of both sides generates heat regional B and is close to respectively or corresponds two inlet channel's below, more does benefit to and heats the atomizing to the internal atomized liquid of leading oil, improves heat-generating body 100's atomization effect, has avoided leading to the emergence of the dry burning and pasting the core condition because of local high temperature.

The cross-sectional areas of the first heat generating section 11 and the second heat generating section 12 may be the same, that is, the width of both the first heat generating section 11 and the second heat generating section 12 is d1 and smaller than the minimum width d2 of the conductive portion 20, and by the gradual change structure for limiting the cross-sectional area of the conductive portion 20, the conductive portion 20 generates less heat when the heat generating body 100 generates heat by being energized while ensuring sufficient supporting strength of the conductive portion 20 to the heat generating portion 10, and since one end of the conductive portion 20 connected to the heat generating portion 10 is a smaller end, conduction of the heat generating portion 10 to the conductive portion 20 direction is reduced, and the generated heat is concentrated in the region of the heat generating portion 10.

Further, the cross-sectional area of each first heat generation section 11 may be gradually reduced from the middle portion to both longitudinal ends. That is, the width of the middle portion of the first heat generating section 11 is H1, the widths of the two ends of the first heat generating section 11 are both H2, H1 is greater than H2, that is, the resistance value of the middle portion of the first heat generating section 11 is smaller than the resistance values of the two ends of the first heat generating section 11, by such a structure, under the condition that the voltage applied to the conductive portions 20 at the two ends of the heat generating body 100 is not changed, the fine adjustment of the heat generating power at the center of the first heat generating section 11 is reduced, and the fine adjustment of the heat generating power at the two ends of the first heat generating section 11 is increased, so that the temperatures of the heat generating portions 10 distributed along the longitudinal direction are more uniform, and the temperatures of the entire heat generating portions 10 are more uniform by matching with the pitch arrangement of the first heat generating sections 11.

In the present embodiment, the width of the second heat generating section 12 is the same as the width H2 of the two ends of the first heat generating section 11, and the second heat generating section 12 has an arc shape with a middle portion protruding outward in the longitudinal direction, so as to improve the uniform distribution of heat in the longitudinal direction when the heat generating portion 10 generates heat; each second heat generating section 12 is connected to a fixing portion 13, and the fixing portion 13 extends in a longitudinal direction to enhance a supporting strength of the heat generating portion 10. In other embodiments, the number of the fixing portions 13 may be selected as occasion demands, for example, one fixing portion 13 is provided at an interval of one second heat generation section 12 while ensuring the supporting strength to the heat generation portion 10.

FIG. 4 shows an alternative embodiment of the heat-generating body 100 shown in FIG. 1, and the heat-generating body 100 of this embodiment is mainly different from the heat-generating body 100 shown in FIG. 1 in that: in order to provide the heat generating body 10 with sufficient support strength, in the present embodiment, a part of the fixing portion 13 is bent and inclined to extend along one end close to the heat generating body 100, and another part of the fixing portion 13 is bent and inclined to extend along the other end close to the heat generating body 100.

Referring to fig. 5, the present embodiment is directed to an atomizer without a support 300, that is, the heating element 100 is directly mounted on the top end of the atomizing base 200, and since two sides of the atomizing chamber 201 need to penetrate to communicate with the outlet duct of the atomizer, the top surface of the atomizing base 200 is divided into two left and right support surfaces by the atomizing chamber 201. Specifically, the fixing portion 13 located at the left half of the heat generating body 100 is inclined and extended to the left to be supported by the left supporting surface of the atomizing base 200, and the fixing portion 13 located at the right half of the heat generating body 100 is inclined and extended to the right to be supported by the right supporting surface of the atomizing base 200, so that the conductive portion 20 and the fixing portion 13 are supported by the top surface of the atomizing base 200, the heat generating portion 10 is completely attached to the oil guide body, and the heat generating portion 10 is kept flat to ensure that the heat generating portion 10 and the oil guide body are not separated.

Referring to fig. 6, which is a schematic structural view of another embodiment of the heating element 100 of the present invention, the main differences between the heating element 100 of the present embodiment and the heating element 100 shown in fig. 1 are: the heating part 10 is an S-shaped or continuous S-shaped bent heating wire, and comprises a plurality of first heating sections 11, the first heating sections 11 are longitudinally arranged at intervals and basically extend along the transverse direction, one ends of two adjacent first heating sections 11 are connected together through a second heating section 12, the other ends of the two adjacent first heating sections are mutually separated, and two free ends of the heating part 10 are respectively connected to two conductive parts 20; that is, the free end of the first heat generation section 11 at the outermost side in the longitudinal direction is connected to the conductive part 20, and preferably, the first heat generation section 11 is smoothly transited to the conductive part 20.

The first and second

heat generation sections

11 and 12 have the same cross-sectional area, that is, the width d1 of the first and second

heat generation sections

11 and 12 is smaller than the minimum width d2 of the conductive portion 20, so that the conductive portion 20 generates heat when the heat generating body 100 is energized to generate heat, and the heat generated when the heat generating body 100 generates heat is concentrated in the region of the heat generating portion 10.

The second heat generating section 12 has an arc shape with a middle portion protruding outward in the transverse direction, so as to improve the uniform distribution of heat in the transverse direction when the heat generating portion 10 generates heat.

In this embodiment, the fixing portion 13 connected to the second heat generation element 12 may extend in the longitudinal direction, or the fixing portion 13 on one side of the heat generation element 100 may extend obliquely toward the left side, and the fixing portion 13 on the other side of the heat generation element 100 may extend obliquely toward the right side.

In the present embodiment, a fixing portion 13 is further formed at the connection portion of the conductive portion 20 and the first heat generating section 11, and the fixing portion 13 on the second heat generating section 12 is matched to improve the supporting strength and stability of the heat generating portion 10.

Referring to fig. 7, a schematic structural diagram of another embodiment of the heating element 100 of the present invention is shown, in which a heating portion 10 of the heating element 100 of the present embodiment includes a plurality of rectangular heating wires 14, and the plurality of heating wires 14 are arranged along a transverse direction at intervals and are sequentially connected in series between two conductive portions 20; each heating wire 14 comprises two first heating sections 11 which extend along the longitudinal direction and are parallel and opposite, and two ends of each first heating section 11 are correspondingly connected through a second heating section 12; in the present embodiment, the second heat-generating sections 12 are straight line segments, and each second heat-generating section 12 is connected with a fixing portion 13 extending in the longitudinal direction.

Specifically, the spacing between the two first heating sections 11 of the heat generating wire 14 in the first heating region a is D3, the spacing between the two first heating sections 11 of the heat generating wire 14 in the second heating region B is D4, and D3 is greater than D4; therefore, when the heating body 100 is electrified to heat, the distance between the two first heating sections 11 of the heating wire 14 in the first heating area A is larger, so that the heat generated in the unit area of the first heating area A is reduced, and the temperature of the first heating area A is reduced; the distance between the two first heating sections 11 of the heating wire 14 in the second heating areas B on both sides is small, so that the heat generated in the unit area of the second heating area B is increased, and the temperature of the second heating area B is increased, thereby reducing the temperature difference between the temperature in the middle of the heating part 10 and the temperature on both sides, and making the temperature of the heating part 10 distributed along the transverse direction more uniform.

The two adjacent heating wires 14 are connected through the series connection portion 15, two ends of the series connection portion 15 are respectively connected to the middle of the first heating section 11 on the corresponding side of the two adjacent heating wires 14, namely the straight line where the series connection portion 15 is located divides the plurality of heating wires 14 into two vertically symmetrical parts, the upper part and the lower part of each heating wire 14 are in a parallel structure, and the plurality of heating wires 14 are in a series structure. In addition, smooth transition is carried out between the first heating section 11 and the second heating section 12, so that heat is uniformly distributed, and the occurrence of frying oil caused by concentrated heat stacking at the sharp corner position is avoided.

Further, the distance between two adjacent heating wires 14 in the first heating area a is greater than the distance between two adjacent heating wires 14 in the second heating area B, that is, the length of the series part 15 in the first heating area a is D5, the length of the series part 15 in the second heating area B is D6, and D5 is greater than D6, so that when the heating unit 100 is powered on to heat, the temperature of the first heating area a is further finely adjusted to be reduced, and the temperature of the second heating area B is finely adjusted to be increased, so that the temperature of the middle part of the heating unit 10 tends to the temperatures of both sides, and the temperature of the heating unit 10 distributed in the transverse direction is more uniform.

In the present embodiment, the cross-sectional areas of the first and second

heat generating sections

11 and 12 are the same, that is, the widths d1 of the first and second

heat generating sections

11 and 12 are smaller than the minimum width d2 of the conductive portion 20, so that the conductive portion 20 generates less heat when the heat generating body 100 is energized to generate heat, and the heat generated when the heat generating body 100 generates heat is concentrated in the heat generating portion 10 region.

It should be noted that, in the present embodiment, the cross-sectional area of each first heat-generating section 11 may also adopt a gradual change structure, that is, the width of the first heat-generating section 11 gradually decreases from the middle portion to the two ends, so as to make the temperature of the heat-generating portion 10 distributed along the longitudinal direction more uniform.

Preferably, the width of the series portion 15 in the first heat generation region a may be set to be greater than the width of the series portion 15 in the second heat generation region B, so as to further reduce the temperature of the central position of the heat generation portion 10, which is beneficial to the temperature uniformity of the entire region of the heat generation portion 10.

Please refer to fig. 8, which is a schematic structural diagram of another embodiment of the heating element 100 of the present invention, the heating portion 10 of the heating element 100 of the present embodiment includes a plurality of rhombic heating wires 14, the plurality of heating wires 14 are sequentially connected in series between two conductive portions 20 along the transverse direction, each heating wire 14 has a rhombic hole, the rhombic hole of the heating wire 14 in the first heating area a is D7 along the transverse maximum distance, the rhombic hole of the heating wire 14 in the second heating area B is D8 along the transverse maximum distance, and D7 is greater than D8.

When the heating element 100 is electrified to heat, the heat generated in the unit area of the first heating area A is reduced, and the temperature of the first heating area A is reduced; the heat generated by the unit area of the second heat generating region B is increased, and the temperature of the second heat generating region B is increased, so that the temperature difference between the temperature of the middle portion and the temperature of the two sides of the heat generating portion 10 is reduced, and the temperature of the heat generating portion 10 in the transverse direction is more uniform.

Specifically, the heating wire 14 in the present embodiment includes two first heating sections 11 parallel to each other and two second heating sections 12 parallel to each other, and the two first heating sections 11 and the two second heating sections 12 together form the heating wire 14 in a rhombus shape. The first and second

heat generation sections

11 and 12 have the same cross-sectional area, that is, the width of the first and second

heat generation sections

11 and 12 is d1 and is smaller than the minimum width d2 of the conductive portion 20, so that the conductive portion 20 generates less heat when the heat generation body 100 is energized to generate heat, and the heat generated when the heat generation body 100 generates heat is concentrated in the heat generation portion 10 region.

The minor axis direction of a plurality of heater 14 is along horizontal setting, and the major axis direction is along vertical setting, and a plurality of heater 14 direct series connection in this embodiment, and the tie point between two arbitrary adjacent heater 14 all is located heat-generating body 100 along vertical central line to two upper and lower parts heat along longitudinal direction when making heater 14 generate heat is the same, is favorable to heat evenly distributed. Of course, in other embodiments, several heating wires 14 may be arranged at intervals and connected in series in sequence.

In the present embodiment, the fixing portions 13 are respectively connected to both ends of each heating wire 14 in the longitudinal direction, and the fixing portions 13 extend in the longitudinal direction, that is, each fixing portion 13 and the connected first heating section 11 and second heating section 12 form a Y-shaped structure, so that the supporting strength of the heating portion 10 is improved.

Preferably, the cross-sectional areas of the first heat generating section 11 and the second heat generating section 12 in the embodiment may also be arranged in a gradual change structure, that is, the widths of the first heat generating section 11 and the second heat generating section 12 gradually decrease from one end far away from the fixing portion 13 to a direction close to the fixing portion 13, so as to reduce the temperature of the heat generating portion 10 at the position of the transverse center line, so that the temperature of the heat generating portion 10 distributed along the longitudinal direction is more uniform.

It should be noted that the heat-generating body 100 shown in FIGS. 4 to 8 does not show a rough surface, but merely illustrates a specific shape structure of the heat-generating body 100 for the sake of more conciseness and clarity, and does not represent a structure in which the heat-generating body 100 in FIGS. 4 to 8 does not have a rough surface.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

Above is the description to the technical scheme that the utility model provides, to technical personnel in the field, according to the utility model discloses the thought of embodiment all has the change part on concrete implementation and range of application, to sum up, this description content should not be understood as the restriction of the utility model.

Claims

1. The heating body is characterized by being of a flat plate-shaped structure and comprising a heating part and a conductive part formed by extending along the two transverse ends of the heating part, wherein the surface of the heating part, which is at least used for being in contact with an oil guide body, is etched to form an irregular rough surface.

2. The heat-generating body as described in claim 1, wherein a cross-sectional area of said conductive portion gradually increases from one end close to said heat-generating portion to the other end, and a minimum cross-sectional area of said conductive portion is larger than a cross-sectional area of a heat-generating section in said heat-generating portion.

3. The heat-generating body as claimed in claim 2, characterized in that the heat-generating portion is divided in a lateral direction into a first heat-generating region located at a middle portion and second heat-generating regions located at both sides of the first heat-generating region, and a spacing between adjacent two heat-generating sections in the first heat-generating region is larger than a spacing between adjacent two heat-generating sections in the second heat-generating region.

4. A heat-generating body as described in claim 2, wherein said heat-generating portion is a heat-generating wire which is bent in an S-shape or a continuous S-shape, and comprises a plurality of first heat-generating segments which are arranged at a spacing in a longitudinal direction and extend substantially in a transverse direction, and two adjacent ones of said first heat-generating segments are connected together at one end thereof by a second heat-generating segment and are spaced apart from each other at the other end thereof, and two free ends of said heat-generating portion are connected to two of said conductive portions, respectively.

5. A heat-generating body as described in claim 3, wherein said heat-generating portion is a heat-generating wire which is bent in an S-shape or a continuous S-shape, and comprises a plurality of first heat-generating segments which are arranged at a spacing in a lateral direction and extend substantially in a longitudinal direction, and two adjacent ones of said first heat-generating segments are connected together at one end thereof by a second heat-generating segment and are spaced apart from each other at the other end thereof, and two free ends of said heat-generating portion are connected to two of said conductive portions, respectively;

6. A heat-generating body as described in claim 3, wherein said heat-generating portion includes a plurality of rectangular heat-generating wires arranged at a spacing in the lateral direction and connected in series between two of said electrically conductive portions in turn; each heating wire comprises two first heating sections which extend along the longitudinal direction and are opposite in parallel, and two ends of each first heating section are correspondingly connected through a second heating section;

the interval between the two first heating sections of the heating wire in the first heating region is D3, the interval between the two first heating sections of the heating wire in the second heating region is D4, and D3 is greater than D4.

7. A heat-generating body as described in claim 6, wherein a distance between adjacent two of said heat generating wires in the first heat-generating region is D5, a distance between adjacent two of said heat generating wires in the second heat-generating region is D6, and D5 is larger than D6.

8. A heat-generating body as described in any one of claims 4 to 6, characterized in that the cross-sectional areas of the first heat-generating segment and the second heat-generating segment are the same and smaller than the minimum cross-sectional area of the electrically conducting portion.

9. A heat-generating body as described in any one of claims 4 to 6, characterized in that the cross-sectional area of each of said first heat-generating segments is gradually reduced and extended from the middle portion toward both ends.

10. A heat-generating body as described in any one of claims 4 to 6, characterized in that at least one fixing portion having a cross sectional area larger than that of said first heat-generating section and said second heat-generating section is connected to each of both sides of said heat-generating portion in the longitudinal direction.

11. A heat-generating body as described in claim 10, wherein one said fixing portion is connected to each of said second heat-generating segments.

12. A heat-generating body as described in claim 11, characterized in that said fixing portion extends in a longitudinal direction.

13. A heat-generating body as described in claim 11, wherein a part of said fixing portion extends obliquely along one end near said heat-generating body, and another part of said fixing portion extends obliquely along the other end near said heat-generating body.

14. A heat-generating body as described in claim 11, wherein said second heat-generating section has an arc shape with a middle portion projecting outward.

15. A heat-generating body as described in claim 3, wherein said heat-generating portion includes a plurality of diamond-shaped heat-generating wires, and a plurality of said heat-generating wires are connected in series between two of said electrically conductive portions in the transverse direction;

16. A heat-generating body as described in claim 15, wherein a short axis direction of a plurality of said heat-generating wires is arranged in a transverse direction, a long axis direction is arranged in a longitudinal direction, and both ends in the long axis direction of each of said heat-generating wires are respectively connected to a fixing portion.

17. A heat-generating body as described in claim 1, characterized in that said heat-generating body is an integral body formed by etching from a metal sheet and said roughened surface is formed by secondary etching.

18. A heat-generating body as described in claim 1, characterized in that the thickness of the heat-generating body is 0.05 to 0.2 mm.

19. The heat-generating body as described in claim 1, wherein at least one hollowed-out hole is further opened in a region of said conductive portion near said heat-generating portion.