CN217284770U

CN217284770U - Heating body

Info

Publication number: CN217284770U
Application number: CN202220052304.2U
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 includes the portion and follows of generating heat the horizontal both ends of portion of generating heat extend the conductive part that forms, the portion of generating heat is being located fore-and-aft both sides and is being connected with at least one fixed part respectively, a side of fixed part is formed with the adsorption tank that is used for adsorbing the condensate. The heating body of the utility model utilizes the fixing part to provide enough supporting strength for the heating part, so that the heating part is not easy to deform and is completely attached to the oil guide body, and the heating part is kept flat, thereby ensuring that the heating part is not separated from the oil guide body; and through forming the adsorption tank on the other side of the fixed part opposite to the contact with the oil guide body, the surface tension effect of the adsorption tank is utilized to adsorb the condensate formed on the surfaces of the heating part and the fixed part into the adsorption tank, thereby avoiding the oil frying phenomenon easily caused by excessive condensate on the surface of the heating part and reducing the oil frying phenomenon.

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

At present, an atomization component in an electronic atomizer generally adopts a laminated assembly mode, namely the atomization component comprises a support, an oil guide body, a heating body and a base which are sequentially laminated from top to bottom, the support is fixed on the base to clamp and fix the oil guide body and the heating body, but the oil guide body generally adopts oil guide cotton, so that the atomization component has a certain compression amount and has a certain pressing force on the heating body, a heating wire of the heating body is generally tiny, and the oil guide body presses the heating wire after the atomization component is assembled, so that the middle part of the heating wire is extruded and deformed, the adhesion degree of the heating wire and the oil guide body is not enough, and the core pasting phenomenon is caused; and the atomizer can produce the condensate after sucking at every turn, and these condensates are easy to be adhered on the heater surface, make the heater lead to the fried oil phenomenon easily to appear when the atomizing of generating heat.

SUMMERY OF THE UTILITY MODEL

The utility model aims 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 includes the portion and follows that generate heat the horizontal both ends of portion of generating heat extend the conductive part that forms, the portion that generates heat is being located fore-and-aft both sides and is being connected with at least one fixed part respectively, a side of fixed part is formed with the adsorption tank that is used for adsorbing the condensate.

Optionally, the fixing portion protrudes from the one side surface to form an edge portion, the edge portion encloses the adsorption groove, and one end of the adsorption groove, which is adjacent to the heating portion, is open.

Optionally, the protruding height of the edge portion is less than 1 mm.

Optionally, the surface of the heat generating part for contacting with the oil guide body is etched to form an irregular rough surface.

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 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 of each of the two adjacent first heating sections 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 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.

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 sections is gradually reduced and extended from the middle part to the two ends.

Optionally, the cross-sectional area of the fixing part is larger than the cross-sectional areas of the first and second heat generation sections.

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

Optionally, the fixation 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.

According to the heating element of the utility model, the fixing parts are respectively arranged at the two longitudinal sides of the heating part, so that when the heating element is assembled in the atomizer, the fixing parts are utilized to provide enough supporting strength for the heating part, the heating part is not easy to deform and is completely attached to the oil guide body, and the heating part is kept flat, so as to ensure that the heating part is not separated from the oil guide body; and through forming the adsorption tank on the other side of the fixed part opposite to the contact with the oil guide body, the surface tension effect of the adsorption tank is utilized to adsorb the condensate formed on the surfaces of the heating part and the fixed part into the adsorption tank, thereby avoiding the oil frying phenomenon easily caused by excessive condensate on the surface of the heating part and reducing the oil frying phenomenon.

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 described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a back side three-dimensional structure of an embodiment of a heating element of the present invention;

FIG. 2 is a schematic front view of a heating element according to an embodiment of the present invention;

FIG. 3 is a schematic configuration view at the time of mass production of the heat-generating body shown in FIG. 1;

FIG. 4 is a schematic view showing an actual assembly of the heat-generating body shown in FIG. 1;

FIG. 5 is an alternative embodiment of the heat-generating body shown in FIG. 1;

FIG. 6 is a schematic view showing an actual assembly of the heat-generating body shown in FIG. 5;

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

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

FIG. 9 is a schematic structural view of a heating element according to yet another embodiment of the present invention;

FIG. 10 is a schematic view showing a microstructure of a surface of a heat generating body without being subjected to etching treatment;

FIG. 11 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 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 generating region;

10. a heat generating portion; 11. a first heat generation section; 12. a second heat generation section; 13. a fixed part; 131. an adsorption tank; 132. an edge portion; 133. an opening 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 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 function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without 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, a heat generating body 100 according to an embodiment of the present invention includes a heat generating portion 10 and a conductive portion 20 formed to extend along both 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.

At least one fixing part 13 is connected to each of both sides of the heat generating part 10 in the longitudinal direction, and the cross-sectional area of the fixing part 13 is larger than at least 10%, preferably 50%, of the cross-sectional area of the heat generating section in the heat generating part 10, so that only the heat generating part 10 generates heat and the fixing part 13 generates no heat or a small amount of heat when the heat generating body 100 generates heat by energization.

The fixing portion 13 may be substantially flush (i.e., the same thickness and on the same plane) with the heat generating portion 10 and the conductive portion 20, and the width of the fixing portion 13 is greater than the width of the heat generating section in the heat generating portion 10, for example, the width of the fixing portion 13 is between 0.15mm and 2mm, preferably 1.5 mm; when the heating element 100 is assembled in 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 element, the heating element 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 body 300 corresponding to the heating part 10, at this time, the support body 300 supports the conductive part 20 and the fixing part 13, the fixing part 13 provides enough supporting strength for the heating part 10, the heating part 10 is not easy to deform and completely attached to the oil guide body, and the heating part 10 is kept flat, so that the heating part 10 is not separated from the oil guide body.

An adsorption groove 131 for adsorbing condensate is formed on one side surface of the fixing part 13; after the atomizer is sucked, the temperature of the fixing portion 13 is far lower than that of the heat generating portion, so that the surface of the fixing portion 13 and the connecting position of the fixing portion 13 and the heat generating portion 10 are places where excessive condensate is formed, and the heat generating body 100 of the embodiment can utilize the surface tension effect of the adsorption groove 131 to adsorb the condensate formed on the surfaces of the heat generating portion 10 and the fixing portion 13 into the adsorption groove 131, thereby avoiding the phenomenon of oil frying easily caused by excessive condensate on the surface of the heat generating portion 10, and reducing the occurrence of the oil frying phenomenon.

Further, a rim 132 is formed at one side of the fixing portion 13 in a protruding manner, the rim 132 encloses the absorption groove 131, and an opening 133 is formed at one end of the absorption groove 131 adjacent to the heat generating portion 10; that is, the opening 133 of the adsorption groove 131 is located at the connection of the fixing portion and the heat generating portion, thereby improving the effect of the adsorption groove 131 to adsorb the condensate. Of course, in other embodiments, the adsorption groove 131 may be a through hole structure penetrating the front surface of the fixing portion 13.

The protruding height of the edge portion 132 is less than 1mm, that is, the height difference between the fixing portion 13 and the heat generating portion 10 is less than 1mm, so that the heat generating portion 10 is more closely attached to the atomizing surface of the oil guide when the heat generating body 100 is sandwiched between the oil guide and the support 300.

Referring to fig. 2, at least the surface (i.e. front surface) of the heating portion 10 contacting the oil-guiding body is etched to form an irregular rough surface, so that the heating surface area of the heating portion 10 contacting the atomized liquid is increased, and the atomization effect during heating is improved.

In the present embodiment, the cross-sectional area of the conductive portion 20 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 a whole body formed by etching a metal sheet, 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. 3, 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 extension 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 part 10 is roughened, and the microstructure of the roughened surface of the heat generating body 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 subjected to etching treatment to form a rough surface, and in this embodiment, the entire front surface of the heat generating element 100 is directly subjected to etching treatment for the sake of simplifying 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. 4, when the heat generating body 100 is assembled in the atomizer, the heat generating body 100 is vertically sandwiched and fixed by the oil guide and the support 300 to form a heat generating unit, the heat generating unit is mounted on the top end of the atomizing base 200, a channel communicating with the atomizing chamber 201 on the top end of the atomizing base 200 is opened at a position of the support 300 corresponding to the heat generating portion 10, the support 300 supports the conductive portion 20 and the fixing portion 13, so that the heat generating portion 10 is completely attached to the oil guide, the heat generating portion 10 is kept flat, and the heat generating portion 10 is not separated from the oil guide.

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, thereby fixing the heat generating body 100 more effectively, and making the heat generating part 10 not easily deformed and displaced.

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 large, 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-generating section 11 may gradually decrease 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. 5 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. 6, 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. 7, which is a schematic structural diagram 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-generating section 11 at the outermost side in the longitudinal direction is connected to the conductive portion 20, and preferably, the first heat-generating section 11 is smoothly transited to the conductive portion 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 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.

The second heat generating section 12 is formed in 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. 8, which is a schematic structural view 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 rectangular heating wires 14, and the plurality of heating wires 14 are arranged along the 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 distance between the two first heating segments 11 of the heat generating wire 14 in the first heating region a is D3, the distance between the two first heating segments 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 element 100 is electrified to heat, because the distance between the two first heating sections 11 of the heating wire 14 in the first heating area A is large, 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 smaller, 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 and the temperature on both sides of the heating part 10, and making the temperature of the heating part 10 distributed in 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 portion 15 in the first heating area a is D5, the length of the series portion 15 in the second heating area B is D6, and D5 is greater than D6, so that when the heating element 100 is powered on to generate 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 middle temperature of the heating portion 10 tends to both sides, and the temperature of the heating portion 10 distributed in the transverse direction is more uniform.

In the present embodiment, the cross-sectional areas of the first heat generation section 11 and the second heat generation section 12 are the same, that is, the width d1 of the first heat generation section 11 and the second heat generation section 12 is smaller than the minimum width d2 of the conductive portion 20, so that the amount of heat generated by the conductive portion 20 when the heat generating body 100 is energized to generate heat is small, and the amount of heat generated when the heat generating body 100 generates heat is concentrated in the heat generation 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.

Referring to fig. 9, which is a schematic structural view of another embodiment of the heating unit 100 of the present invention, the heating portion 10 of the heating unit 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 the 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 body 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 mutually parallel first heating sections 11 and two mutually parallel second heating sections 12, 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 short axis direction of a plurality of heater 14 sets up along transversely, and the major axis direction sets up along vertically, 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 fore-and-aft 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 is to be noted that the heat-generating body 100 shown in FIGS. 5 to 9 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 the structure of the heat-generating body 100 in FIGS. 5 to 9 without 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. A heating body is characterized by comprising a heating part and conductive parts formed by extending along the two transverse ends of the heating part, wherein the heating part is respectively connected with at least one fixed part at two longitudinal sides, and an adsorption groove for adsorbing condensate is formed on one side surface of each fixed part.

2. A heat-generating body as described in claim 1, wherein said fixing portion has an edge portion formed so as to protrude from said one side surface, said edge portion enclosing said suction groove, said suction groove being open at an end adjacent to said heat-generating portion.

3. A heat-generating body as described in claim 2, characterized in that a protruding height of the edge portion is less than 1 mm.

4. A heat-generating body as described in claim 1, wherein a surface of said heat-generating portion for contact with the oil-guiding body is etched to form an irregular rough surface.

5. 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.

6. The heat-generating body as claimed in claim 5, 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.

7. A heat-generating body as described in claim 5, characterized in that said heat-generating portion is a heat-generating wire which is S-shaped or continuously S-shaped bent, and comprises a plurality of first heat-generating sections which are arranged at intervals in a longitudinal direction and extend substantially in a transverse direction, and one ends of two adjacent first heat-generating sections are connected together through a second heat-generating section, and the other ends are spaced from each other, and two free ends of said heat-generating portion are connected to two of said conductive portions, respectively.

8. The heat-generating body as claimed in claim 6, characterized in that the 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 intervals in a transverse direction and extend substantially in a longitudinal direction, and one ends of two adjacent first heat-generating segments are connected together through a second heat-generating segment, and the other ends are spaced from each other, and two free ends of the heat-generating portion are connected to two of the conductive portions, respectively;

9. The heat-generating body as claimed in claim 6, characterized in that the heat-generating portion includes a plurality of rectangular heat-generating wires which are arranged at a spacing in a lateral direction and are connected in series between two of the electrically conductive portions in this order; 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.

10. A heat-generating body as described in claim 9, 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.

11. A heat-generating body as described in any one of claims 8 to 10, characterized in that the cross sectional areas of said first heat-generating segment and said second heat-generating segment are the same and smaller than the minimum cross sectional area of said electrically conducting portion.

12. A heat-generating body as described in any one of claims 8 to 10, 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.

13. A heat-generating body as described in any one of claims 8 to 10, characterized in that a cross-sectional area of said fixing portion is larger than cross-sectional areas of said first heat-generating segment and said second heat-generating segment.

14. A heat-generating body as described in claim 13, wherein one said fixing portion is connected to each of said second heat-generating segments.

15. A heat-generating body as described in claim 13, characterized in that said fixing portion extends in a longitudinal direction.

16. A heat-generating body as described in claim 13, 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.

17. A heat-generating body as described in claim 13, wherein said second heat-generating section has an arc shape with a middle portion projecting outward.

18. The heat-generating body according to claim 6, characterized in that the heat-generating body includes a plurality of rhombus-shaped heat-generating wires, and the plurality of heat-generating wires are connected in series between the two conductive parts in the transverse direction;

19. A heat-generating body as described in claim 18, 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.