CN217284772U - Heating body - Google Patents

Abstract

The utility model relates to a heat-generating body, heat-generating body are dull and stereotyped sheet structure, including the portion of generating heat and along the conductive part that the horizontal both ends of the portion of generating heat extend formation, the portion of generating heat is along transversely dividing the first heating region that is located the middle part and along the second heating region that is located first heating region both sides, and the interval between two adjacent heating regions in the first heating region is greater than the interval between two adjacent heating regions in the second heating region. The utility model discloses the heat-generating body can make the regional temperature reduction of the first heat generation in middle part, makes the both sides second generate heat regional temperature and risees to reduce the middle part temperature of the portion of generating heat and the difference in temperature between the both sides temperature, thereby make the temperature of the whole portion of generating heat more even, improve the atomization effect of heat-generating body, avoided leading to pasting the emergence of the core condition because of local high temperature.

Description

Heating body

Technical Field

The utility model belongs to the technical field of the electronic atomization, especially, relate to a heat-generating body.

Background

The heating net that uses in present electronic atomizer usually includes the electric conduction portion at regular heater and heater both ends, and the interval of each section of generating heat in this heater equals, has the uneven phenomenon of the temperature that generates heat when generating heat, and the middle part of heater is because the heat is too concentrated promptly, leads to heater central point to put the temperature height, and the temperature that the heater both sides are close to the electric conduction portion position is low to produce carbon deposit, paste core scheduling problem easily at central point.

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 utility model provides a heat-generating body, the heat-generating body is dull and stereotyped sheet structure, including the portion of generating heat and edge the conductive part that the horizontal both ends of the portion of generating heat extend to form, the portion of generating heat is along transversely dividing into the first heating region that is located the middle part and along being located the second of first heating region both sides generates heat regionally, interval between two adjacent sections of generating heat in the first heating region is greater than interval between two adjacent sections of generating heat in the second heating region.

Optionally, the heat generating portion is in a grid shape, a stripe shape, an S shape, a fold line shape, a wave shape, a zigzag shape, a spiral shape, a circular shape or a rectangular shape.

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 area of each of the first heat-generating sections gradually decreases from the middle portion to the longitudinal ends.

Optionally, the heat generating portion is connected with at least one fixing portion at two longitudinal sides.

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

Optionally, the fixation portion extends in a longitudinal direction; or one part of the fixing part extends obliquely along one end close to the heating element, and the other part of the fixing part extends obliquely along the other end close to the heating element.

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.

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, an end of the conductive portion away from the heat generating portion further extends to form an extending portion, and a cross-sectional area of the extending portion is smaller than a minimum cross-sectional area of the conductive portion.

Optionally, 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 hollowed-out hole is further formed in an area of the conductive portion, which is close to the heat generating portion.

According to the utility model discloses a heat-generating body, the interval through the section of will generating heat in the middle part of the portion of generating heat sets up the interval for being greater than the section of generating heat in both sides, can make the regional temperature reduction of the first heat of middle part, makes the regional temperature rise of both sides second generate heat to reduce the middle part temperature of the portion of generating heat and the difference in temperature between the both sides temperature, thereby make the temperature of the whole portion of generating heat more even, improve the atomization effect of heat-generating body, avoided leading to pasting the emergence of the core condition because of local temperature is too high.

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 structural view of a heating element according to an embodiment of the present invention;

FIG. 2 is a schematic view showing a structure in 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 structural view of another embodiment of the heating element of the present invention;

FIG. 7 is a schematic structural view of a heating element according to another embodiment of 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 heating wire; 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 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, an embodiment of the present invention provides aheating element 100, where theheating element 100 is a flat plate structure, and includes aheating portion 10 and aconductive portion 20 formed by extending from two transverse ends of theheating portion 10, theheating portion 10 is transversely divided into a first heating area a located in the middle and a second heating area B located on two sides of the first heating area a, and a distance between two adjacent heating sections in the first heating area a is greater than a distance between two adjacent heating sections in the second heating area B; with such a structure, when theheat generating body 100 is energized to generate heat, the temperature of the middle first heat generating region a can be lowered, and the temperatures of the two side second heat generating regions B can be raised, so as to reduce the temperature difference between the middle temperature and the two side temperatures of theheat generating portion 10, thereby making the temperature of the entireheat generating portion 10 more uniform. When this embodiment heat-generatingbody 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.

In practical application, theheating 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, theconductive 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 theheating element 100, and theheating part 10 of theheating 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.

Theheating 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 theheating element 100 is 0.05 to 0.2mm, preferably 0.1 mm. Theheat generating part 10 of theheat generating body 100 may have various shapes that generate heat more uniformly, for example, a mesh shape, a stripe shape, an S shape, a zigzag shape, a wave shape, a zigzag shape, a spiral shape, a circular shape, or a rectangular shape.

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

Thus, when theheating element 100 is powered on to generate heat, the distance between the twofirst heating sections 11 in the middle first heating area a of theheating part 10 is larger, 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; and the interval of twofirst heating sections 11 in the second heating area B of both sides is less, has increased the second and has generated the produced heat of area B unit, has increased the produced heat of second heating area B, has improved the temperature of second heating area B to reduce the temperature difference between the middle part temperature of theportion 10 that generates heat and the both sides temperature, make the temperature of theportion 10 that generates heat along transverse distribution more even, improve the atomization effect of heat-generatingbody 100, avoided leading to pasting the emergence of the core condition because of local high temperature.

In the present embodiment, the cross-sectional area of theconductive portion 20 gradually increases from one end close to theheat generating portion 10 to the other end, and the minimum cross-sectional area of theconductive portion 20 is larger than the cross-sectional area of the heat generating section in theheat generating portion 10.

Specifically, the cross-sectional areas of the firstheat generating section 11 and the secondheat generating section 12 may be the same, that is, the width of both the firstheat generating section 11 and the secondheat generating section 12 is d1 and smaller than the minimum width d2 of theconductive portion 20, by defining the gradual change structure of the cross-sectional area of theconductive portion 20, theconductive portion 20 does not generate heat when theheat generating body 100 generates heat by being energized while ensuring sufficient supporting strength of theconductive portion 20 to theheat generating portion 10, and since one end of theconductive portion 20 connected to theheat generating portion 10 is a smaller end, the conduction of heat of theheat generating portion 10 to the direction of theconductive portion 20 is reduced, the generated heat is concentrated in the region of theheat generating portion 10, the atomization effect is better, and the heat utilization efficiency is improved.

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

In the present embodiment, an extendingportion 30 is further formed by extending an end of theconductive portion 20 away from theheat generating portion 10, and a cross-sectional area of the extendingportion 30 is smaller than a minimum cross-sectional area of theconductive portion 20. I.e., the width d3 of theextension portion 30 is smaller than the minimum width d2 of theconductive portion 20.

In some embodiments, the cross-sectional area of each first heat-generatingsection 11 may gradually decrease from the middle portion to the longitudinal ends. That is, the width of the middle portion of the firstheat generating section 11 is H1, the widths of both ends of the firstheat generating section 11 are H2, and H1 is greater than H2, so that the power fine adjustment of the center position of the firstheat generating section 11 is reduced, and the power fine adjustment of both ends of the firstheat generating section 11 is increased under the condition that the voltage is not applied to theconductive portions 20 at both ends of theheat generating body 100, so that the temperature of theheat generating portion 10 distributed along the longitudinal direction is more uniform, and the temperature of the entireheat generating portion 10 is more uniform by matching the distance arrangement of the firstheat generating sections 11. In the present embodiment, the width of the secondheat generating section 12 is the same as the width H2 of both ends of the firstheat generating section 11.

As shown in fig. 2, during actual manufacturing, a whole large-sized metal sheet is selected, the metal sheet is divided into anetching area 101, a forming area surrounded by theetching area 101 and corresponding to theheating elements 100, and aframe area 102 surrounding each forming area and theetching area 101, after theetching area 101 is removed, eachheating element 100 formed in the forming area is connected with theframe area 102 through the extendingportions 30 at two ends thereof, so that a plurality ofheating elements 100 can be automatically cut from the metal sheet, and mass production can be realized.

Specifically, rectangular or triangular connection points 103 are formed at positions of theframe area 102 corresponding to theextension portions 30, theextension portions 30 are connected with theframe area 102 through the connection points 103, and the contact width between theextension portions 30 and the connection points 103 is greater than 0.15mm or less than 3mm, preferably 2mm, so that the cutting traces on theextension portions 30 are reduced, and the cutting traces are located on theextension portions 30, so that the cutting traces avoid thecontact areas 21 with the electrodes, and the stable contact between theconductive portions 20 and the electrodes is ensured.

Further, as shown in fig. 3, in order to provide theheat generating portion 10 with sufficient supporting strength, theheat generating portion 10 of the present embodiment is connected with at least one fixingportion 13 at each of two sides in the longitudinal direction. The utility model discloses when heat-generatingbody 100 is in assembling the atomizer, through the fixed heat-generatingbody 100 of direction centre gripping about the oil guide body and thesupporter 300 in order to form the heating element, this heating element installs on atomizingbase 200's top, the passageway withatomizing base 200top atomizing chamber 201 intercommunication is seted up to the position that thesupporter 300 corresponds the portion of generatingheat 10, utilize thesupporter 300 to come to supportconductive part 20 and fixedpart 13, so that the portion of generatingheat 10 pastes completely on the oil guide body, keep the portion of generatingheat 10 level and smooth, ensure the portion of generatingheat 10 and lead the inseparable of oil body.

Further, the ends of the bothside fixing parts 13 may protrude the edge of the supportingbody 300, and the protruding parts are bent toward the supportingbody 300 to be clamped and clamped to both sides of the supportingbody 300, so as to support and preferably fix theheating body 100, so that theheating body 10 is not easily deformed and displaced; of course, one or more hollow holes may be formed in the fixingportion 13 according to actual requirements, so as to reduce the heat generated by theheat generating portion 10 from being transferred to the supportingbody 300.

Preferably, the secondheat generating section 12 is arc-shaped with a middle portion protruding outward along the longitudinal direction, so as to improve the uniform distribution of heat along the longitudinal direction when theheat generating portion 10 generates heat; each of the secondheat generating sections 12 is connected to a fixingportion 13, and the fixingportion 13 extends in a longitudinal direction to enhance a supporting strength of theheat generating portion 10. In other embodiments, the number of the fixingportions 13 may be selected according to the situation, for example, one fixingportion 13 is provided at an interval of one secondheat generating section 12 while ensuring the supporting strength of theheat generating portion 10.

FIG. 4 shows an alternative embodiment of the heat-generatingbody 100 shown in FIG. 1, and the heat-generatingbody 100 of this embodiment is mainly different from the heat-generatingbody 100 shown in FIG. 1 in that: in order to provide theheat generating body 10 with sufficient support strength, the present embodiment has a part of the fixingportion 13 extending obliquely along one end near theheat generating body 100 and another part of the fixingportion 13 extending obliquely along the other end near theheat generating body 100.

Referring to fig. 5, the present embodiment is directed to an atomizer without asupport 300, that is, theheating element 100 is directly mounted on the top end of theatomizing base 200, and since two sides of theatomizing chamber 201 need to penetrate to communicate with the outlet duct of the atomizer, the top surface of theatomizing base 200 is divided into two left and right support surfaces by theatomizing chamber 201. Specifically, the fixingportion 13 located at the left half of theheat generating body 100 is inclined and extended to the left to be supported by the left supporting surface of theatomizing base 200, and the fixingportion 13 located at the right half of theheat generating body 100 is inclined and extended to the right to be supported by the right supporting surface of theatomizing base 200, so that theconductive portion 20 and the fixingportion 13 are supported by the top surface of theatomizing base 200, theheat generating portion 10 is completely attached to the oil guide body, and theheat generating portion 10 is kept flat to ensure that theheat 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 theheating element 100 of the present invention, theheating portion 10 of theheating element 100 of the present embodiment includes a plurality ofrectangular heating wires 14, and the plurality ofheating wires 14 are arranged along the transverse direction at intervals and are sequentially connected in series between twoconductive portions 20; eachheating wire 14 comprises twofirst heating sections 11 which extend along the longitudinal direction and are opposite in parallel, and two ends of the twofirst heating sections 11 are correspondingly connected throughsecond heating sections 12 respectively; in the present embodiment, the second heat-generatingsections 12 are straight line segments, and each second heat-generatingsection 12 is connected with a fixingportion 13 extending in the longitudinal direction.

Specifically, the distance between the twofirst heating segments 11 of theheat generating wire 14 in the first heating region a is D3, the distance between the twofirst heating segments 11 of theheat generating wire 14 in the second heating region B is D4, and D3 is greater than D4; therefore, when theheating body 100 is electrified to heat, the distance between the twofirst heating sections 11 of theheating 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 twofirst heating sections 11 of theheating 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 theheating part 10 and the temperature on both sides, and making the temperature of theheating part 10 distributed along the transverse direction more uniform.

The twoadjacent heating wires 14 are connected through theseries connection portion 15, two ends of theseries connection portion 15 are respectively connected to the middle of thefirst heating section 11 on the corresponding side of the twoadjacent heating wires 14, namely the straight line where theseries connection portion 15 is located divides the plurality ofheating wires 14 into two vertically symmetrical parts, the upper part and the lower part of eachheating wire 14 are in a parallel structure, and the plurality ofheating wires 14 are in a series structure. In addition, smooth transition is carried out between thefirst heating section 11 and thesecond 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 twoadjacent heating wires 14 in the first heating area a is greater than the distance between twoadjacent heating wires 14 in the second heating area B, that is, the length of theseries portion 15 in the first heating area a is D5, the length of theseries portion 15 in the second heating area B is D6, and D5 is greater than D6, so that when theheating 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 theheating portion 10 tends to both sides, and the temperature of theheating portion 10 distributed in the transverse direction is more uniform.

In the present embodiment, the cross-sectional areas of the firstheat generation section 11 and the secondheat generation section 12 are the same, that is, the width d1 of the firstheat generation section 11 and the secondheat generation section 12 is smaller than the minimum width d2 of theconductive portion 20, so that theconductive portion 20 does not generate heat when theheat generating body 100 is energized to generate heat, and the heat generated when theheat generating body 100 generates heat is concentrated in theheat generation portion 10 region.

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

Preferably, the width of theseries portion 15 in the first heat generation region a may be set to be larger than the width of theseries portion 15 in the second heat generation region B, so as to further reduce the temperature of the center of theheat generation part 10, which is beneficial to the temperature uniformity of the entire region of theheat generation part 10.

Referring to fig. 7, a schematic structural diagram of another embodiment of theheating element 100 of the present invention is shown, in theheating element 100 of the present embodiment, theheating portion 10 includes a plurality ofrhombic heating wires 14, the plurality ofheating wires 14 are sequentially connected in series between the twoconductive portions 20 along the transverse direction, eachheating wire 14 has a rhombic hole, the rhombic holes of theheating wires 14 in the first heating area a are D7 along the transverse maximum distance, the rhombic holes of theheating wires 14 in the second heating area B are D8 along the transverse maximum distance, and D7 is greater than D8.

When theheating 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 theheat generating portion 10 is reduced, and the temperature of theheat generating portion 10 in the transverse direction is more uniform.

Specifically, theheating wire 14 in the present embodiment includes twofirst heating sections 11 parallel to each other and twosecond heating sections 12 parallel to each other, and the twofirst heating sections 11 and the twosecond heating sections 12 together form theheating wire 14 in a rhombus shape. The first and secondheat generation sections 11 and 12 have the same cross-sectional area, that is, the width of the first and secondheat generation sections 11 and 12 is d1 and is smaller than the minimum width d2 of theconductive portion 20, so that theconductive portion 20 does not generate heat when theheat generation body 100 is energized to generate heat, and the heat generated when theheat generation body 100 generates heat is concentrated in theheat generation portion 10 region.

The short axis direction of a plurality ofheating wires 14 sets up along transversely, and the major axis direction sets up along vertically, and a plurality ofheating wires 14 direct series connection in this embodiment, and the equal heat-generatingbody 100 of tie point between two arbitraryadjacent heating wires 14 is along on the fore-and-aft central line to two upper and lower parts heat along the longitudinal direction when makingheating wire 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, eachheating wire 14 has a fixingportion 13 connected to each end in the longitudinal direction, and the fixingportions 13 extend in the longitudinal direction, that is, each fixingportion 13 and the connectedfirst heating section 11 andsecond heating section 12 form a Y-shaped structure, so that the supporting strength of theheating portion 10 is improved.

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

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 (17)

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 two transverse ends of the heating part, wherein the heating part is transversely divided into a first heating area positioned in the middle and second heating areas positioned on two sides of the first heating area, and the distance between two adjacent heating sections in the first heating area is larger than the distance between two adjacent heating sections in the second heating area.

2. The heat-generating body as described in claim 1, wherein the heat-generating portion is a mesh, a stripe, an S-shape, a zigzag, a wave-shape, a zigzag, a spiral, a circle or a rectangle.

3. The heat-generating body as claimed in claim 2, 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 includes 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;

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.

4. The heat-generating body as claimed in claim 2, 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 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.

5. A heat-generating body as described in claim 4, 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.

6. A heat-generating body as described in any one of claims 3 to 5, 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 longitudinal ends.

7. A heat-generating body as described in any one of claims 3 to 5, characterized in that at least one fixing portion is connected to each of both sides of the heat-generating portion in the longitudinal direction.

8. A heat-generating body as described in claim 7, wherein one said fixing portion is connected to each of said second heat-generating segments.

9. A heat-generating body as described in claim 7, characterized in that the fixing portion extends in a longitudinal direction; or one part of the fixing part extends obliquely along one end close to the heating element, and the other part of the fixing part extends obliquely along the other end close to the heating element.

10. A heat-generating body as described in claim 7, wherein said second heat-generating section has an arc shape with a middle portion projecting outward.

11. The heat-generating body according to claim 2, 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;

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.

12. A heat-generating body as described in claim 11, 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.

13. 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.

14. A heat-generating body as described in claim 1, wherein an end of said conductive portion remote from said heat-generating portion is further extended to form an extended portion, and a cross-sectional area of said extended portion is smaller than a minimum cross-sectional area of said conductive portion.

15. A heat-generating body as described in claim 1, characterized in that said heat-generating body is an integral body formed by etching a metal sheet.

16. 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.

17. 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.

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