CN114468363A - Heating and baking low-temperature smoking set - Google Patents

Abstract

The invention discloses a heating and baking low-temperature smoking tool, which comprises a shell, a heating cavity for accommodating tobacco products is formed in the shell, a heating body is arranged in the heating cavity, and a heating cavity is provided on the heating cavity for the An installation cavity in which the heating element is inserted and installed, an electrode post connected to the power supply in the housing and a conductive elastic sheet are fixed in the installation cavity, and a plurality of conductive elastic sheets are arranged around the electrode post; A first electrode and a second electrode are provided, and an installation hole is arranged on the heating body; the heating body is inserted into the installation cavity, and the conductive elastic sheet is elastically connected to the first electrode on the side wall of the heating body. contact, the electrode post is inserted into the mounting hole on the heating element and is in contact with the second electrode. The invention has the advantages of convenient disassembly of the heating element.

Description

A heating and baking low temperature smoking set

technical field

The invention belongs to the technical field of smoking articles, in particular to a heating and baking low-temperature smoking article.

Background technique

At present, there are mainly two types of electronic cigarettes on the market, such as electronic cigarettes that can be smoked by evaporating e-liquid and low-temperature cigarettes that can be smoked by heating/distilling tobacco materials at low temperature (150-300 degrees). Compared with conventional combustion cigarettes, the working temperature of electronic cigarettes is lower than that of low temperature cigarettes, and the harmful components in the smoke produced by the e-liquid or low temperature cigarettes used are far less than those of traditional combustion cigarettes. Therefore, the use of electronic cigarettes or Low temperature smoke can greatly avoid the adverse effects of cigarettes on the human body.

The heating element is the core component of the heat-not-burn smoking device, which is generally divided into a centrally heated sheet-shaped heating element, a rod-shaped heating element, and a surrounding heating tubular heating element. At present, the centrally heated heating element on the market is connected to the wire of the power supply through the pad. If the heating element fails, the heating element needs to be disassembled, and then re-welded after trimming. The maintenance process is cumbersome, and repeated welding increases the amount of welding. The probability of problems such as bad and false welding.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a heating and baking low-temperature smoking tool with convenient disassembly of the heating element.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions:

A low-temperature smoking appliance for heating and baking, comprising a housing, an installation cavity for inserting and installing the heating element is arranged in the heating cavity, and an electrode column and a power supply in the housing are fixedly arranged in the installation cavity. a conductive elastic sheet, wherein a plurality of conductive elastic sheets are arranged around the electrode column;

The heating body is provided with a first electrode and a second electrode, and the heating body is provided with a mounting hole;

When the heating element is detachably inserted into the installation cavity, the conductive elastic sheet is in elastic contact with the first electrode on the side wall of the heating element, and the electrode post is inserted into the installation hole on the heating element and in contact with the second electrode.

Specifically, the electrode post is inserted into the mounting hole and is threadedly connected to the heating element.

Specifically, the heating chamber has an opposite first end and a second end; wherein, the first end is used for inserting the tobacco product, a base is slidably installed in the second end, and a base is installed in the casing. a linear drive mechanism for driving the base to move back and forth in the heating chamber;

There is also a partition plate with a through hole in the heating chamber between the first end and the second end, and the heating body matches all the parts fixed on the base after passing through the through hole. into the installation cavity.

Specifically, an elastic sealing body is arranged between the base and the partition plate, and the base has a first position and a second position; wherein,

When the base is located at the first position, the base is close to the partition plate, and the elastic sealing body is pressed to seal the through hole;

When the base is located at the second position, the base is away from the partition plate, and the heat generating body is not separated from the through hole.

Specifically, the elastic sealing body is fixedly arranged on the partition plate.

Specifically, the linear drive mechanism includes a drive motor, a lead screw, and a lead screw slider, the base is connected to the lead screw slider, and the drive motor drives the lead screw to rotate to drive the lead screw to slide. The block and the base move linearly.

Specifically, the heating body is in the shape of a rod, and the first electrode is arranged in a circle around the outer wall of the heating body.

Specifically, the second electrode is disposed inside the heating body, and the electrode post is directly connected with the second electrode after being inserted into the mounting hole.

Specifically, the heating element includes an insulating thin-walled tube, a resistance line arranged on the outer peripheral wall of the insulating thin-walled tube, and an insulating layer covering the resistance line, and the second electrode is fixedly arranged on the insulating thin-walled Inside the tube, the first electrode and the second electrode are respectively connected with two ends of the resistance line.

Specifically, the top end of the second electrode is tapered and extends to the outside of the insulating thin-walled tube.

Specifically, the resistance line covers the entire outer peripheral wall of the insulating thin-walled tube, and both ends of the insulating thin-walled tube are provided with connection electrodes connected to both ends of the resistance line; wherein,

The connecting electrode located at the tail end of the insulating thin-walled tube constitutes the first electrode, and the connecting electrode located at the front end of the insulating thin-walled tube is electrically connected to the second electrode.

Specifically, the insulating thin-walled tube is provided with at least one perforation corresponding to the position of the connection electrode at the top, and the perforation is filled with a conductive matrix that communicates the connection electrode with the second electrode.

Compared with the prior art, the present invention has the beneficial effects that an electrode post is arranged in the center of the installation cavity, and a plurality of conductive elastic sheets are arranged on the coaxial outer ring of the electrode post, and the electrode post and the conductive elastic sheets pass through the wires and the two poles of the power supply respectively. After the heating element is inserted into the installation cavity, the threaded end of the electrode column is connected with the threaded hole on the second electrode of the heating element. While conducting one of the poles of the heating element, the heating element is firmly and reliably installed in the smoking set; the electrode The conductive elastic sheet of the outer ring of the column is in elastic contact with the first electrode on the side of the heating body to realize the conduction of the other pole of the heating body. Repair or replacement of good products, and the heating body omits the connecting wires, so there will be no problems such as poor wire welding and virtual welding.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a schematic structural diagram of a heating and baking low-temperature smoking set provided by an embodiment of the present invention;

Fig. 2 is a partial schematic diagram of a heating and baking low-temperature smoking device provided by an embodiment of the present invention;

Fig. 3 is the explosion schematic diagram of the heating and baking low-temperature smoking tool provided by the embodiment of the present invention;

4 is a schematic structural diagram of a heating body involved in an embodiment of the present invention;

5 is a schematic cross-sectional view of a heating element involved in an embodiment of the present invention;

Among them: 1-shell; 101-middle shell; 102-top cover; 103-bottom cover; 2-heating body; 201-insulating thin-walled tube; 202-resistance line; 203-connecting electrode; 3-power supply; 4- circuit board; 5-first electrode; 6-second electrode; 601-threaded connection hole; 7-heating cavity; 8-tobacco product; 9-installation cavity; 10-electrode column; 11-conductive elastic sheet; 12-separation plate; 13-elastic sealing body; 14-slide cover; 15-chute; 16-moving slider; 17-base; 18-magnet; 19-key; 20-linear drive mechanism; 2001-drive motor; 2002- Screw; 2003-screw slider; 21-connecting wire.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to Figures 1 to 5, a heating and baking low-temperature smoking device includes a casing 1, a heating element 2, a power source 3 and a circuit board 4, and the heating element 2, the power source 3 and the circuit board 4 are all arranged in the casing 1, and the heating element 2 has a first electrode 5 and a second electrode 6 for supplying power to it, the first electrode 5 and the second electrode 6 are connected with the circuit board 4 through the connecting wire 21, and the circuit board 4 is connected with the power supply 3, and then together form a control heating body The heating control circuit is also provided with a button 19 for realizing human-computer interaction on the casing 1 . A heating cavity 7 for accommodating tobacco products 8 is formed in the housing 1. The tobacco products 8 can be inserted into the heating cavity 7 and can be removed from the heating cavity 7. The heating element 2 is arranged in the heating cavity 7 and can be The tobacco product 8 in the heating chamber 7 is heated to generate smoke for the user to smoke. The tobacco product 8 can be a low-temperature cigarette or a pod, and the power source 3 can be a lithium-ion battery, a nickel-hydrogen battery or other energy bodies.

1-3, specifically, the heating cavity 7 is provided with an installation cavity 9 for inserting and installing the heating element 2, and the installation cavity 9 is fixedly provided with an electrode column 10 connected to the power supply 3 in the housing 1 and a conductive The elastic sheet 11, the electrode post 10 is arranged in the middle of the installation cavity 9, the conductive elastic sheet 11 is arranged in multiple pieces around the electrode post 10, and the heating element 2 is provided with an installation hole, when the heating element 2 is detachably inserted into the installation cavity 9, the conductive elastic sheet 11 is in elastic contact with the first electrode 5 on the side wall of the heating body 2, and the electrode post 10 is inserted into the mounting hole on the heating body 2 and contacts with the second electrode 6 to realize circuit conduction.

Specifically, the electrode column 10 is provided with a connecting thread, the first electrode 5 is arranged on the side wall of the rear end (that is, the installation end) of the heating element 2, the second electrode 6 is arranged inside the heating element 2, and the second electrode 6 is arranged inside the heating element 2. 2. The bottom end of the installation hole is provided with a threaded connection hole 601. When the heating element 2 is installed in the installation cavity 9, the electrode column 10 is inserted into the threaded connection hole 601 and is threadedly connected with it, thereby firmly fixing the heating element 2 in the installation cavity 9. It should be noted that, the connection method of the installation part of the heating element 2 in the smoking device is not limited to screw connection, but can also be other detachable connection methods such as snaps.

In practical applications, the second electrode 6 can be arranged at the bottom end of the threaded connection hole 601. After the heating element 2 is screwed in place, the electrode column 10 is in contact with the second electrode 6. Of course, in this embodiment, in order to ensure reliable connection The threaded connection hole 601 is directly arranged on the second electrode 6, that is to say, as long as the electrode column 10 is screwed into the threaded connection hole 601, the electrode column 10 and the second electrode 6 are electrically connected, thereby ensuring the heating element. The reliability of the electrical connection of the power supply circuit is less prone to circuit connection failures.

In this embodiment, an electrode column 10 is arranged in the center of the installation cavity 9, and a plurality of conductive elastic pieces 11 are arranged on the coaxial outer ring of the electrode column 10. The electrode column 10 and the conductive elastic pieces 11 are respectively connected to the two poles of the power supply 3 through wires, and generate heat. After the body 2 is inserted into the installation cavity 9, the threaded end of the electrode column 10 is connected to the threaded hole on the second electrode 6 of the heating body 2. While conducting one of the poles of the heating body 2, the heating body 2 is firmly and reliably installed on the In the smoking set; the conductive elastic sheet 11 of the outer ring of the electrode column 10 is in elastic contact with the first electrode 5 on the side of the heating body 2 to realize the conduction of the other pole of the heating body 2. During the production and maintenance process, the heating body 2 can be removed from the installation. The cavity 9 is unscrewed and pulled out, so as to realize the maintenance or replacement of defective products, and the heating body 2 omits the connecting wires, so there will be no problems such as poor wire welding and virtual welding.

1-3, in some possible implementations, the heating chamber 7 has opposite first and second ends; wherein the first end is used for inserting the tobacco product 8, and the second end is slidably mounted with a base The seat 17, the housing 1 is provided with a linear drive mechanism 20 that drives the base 17 to move back and forth in the heating chamber 7, the heating body 2 can move in the heating chamber 7 through the driving of the linear drive mechanism 20, and the heating chamber 7 is located in the first A partition plate 12 with a through hole is also arranged between the end and the second end, and the heating element 2 is fixed in the installation cavity 9 on the base 17 after matching through the through hole.

Through the above arrangement, after the tobacco product 8 is inserted into the heating chamber 7, the heating element 2 penetrates into the tobacco product 8 to heat the smoking material to generate smoke for the user to smoke. The linear drive mechanism 20 is used to drive the heating element 2 to withdraw from the tobacco product 8 , and then pull out the tobacco product 8 , thereby effectively avoiding excessive residues of shredded tobacco on the heating element 2 and reducing the burden of cleaning the heating element 2 .

Referring to FIGS. 1-3 , it can be understood that, in practical applications, an elastic sealing body 13 is provided between the base 17 and the partition plate 12 , and the base 17 can be driven in the first position by the linear drive mechanism 20 and the second position; wherein, when the base 17 is in the first position, the base 17 is close to the partition plate 12, and the elastic sealing body 13 is pressed to seal the through hole, and the heating element 2 is inserted into the first end , when the tobacco product 8 is inserted into the first end, the heating element 2 can penetrate into the tobacco product 8, and when the base 17 is in the second position, the base 17 moves away from the partition plate 12, and the heating body 2 moves from the inside of the first end. Exit, but not completely out of the via.

In the above solution, the elastic sealing body 13 is arranged between the partition plate 12 and the base 17. When the base 17 moves to the first position, the heating element 2 is inserted into the first end through the through hole, and the base 17 is squeezed. The through hole is sealed by the elastic sealing body 13. At this time, the tobacco product 8 is inserted into the first end of the heating chamber 7, and the heating body 2 is used to heat the tobacco product 8 to generate smoke. The gap between the first ends of the cavity 7 enters and flows out from the interior of the tobacco product 8 to form a specific airflow channel. The gas inside the smoking device cannot enter the first end from the through hole, and the smoked tobacco tastes more pure. In addition, when the base 17 is retracted to the second position, the heating element 2 is not completely separated from the through hole, so that a small amount of residue that falls off when the tobacco product 8 is pulled out will not enter other parts of the smoking device through the through hole.

1-3, specifically, in this embodiment, the elastic sealing body 13 is directly disposed on the end surface of the partition plate 12 facing the second end, of course, the elastic sealing body 13 can also be disposed on the base 17 facing the partition plate 12 on the end face.

It can be understood that when the through hole is opened at the center of the partition plate 12, the heating element 2 is basically located at the center of the heating cavity 7, and the heating can be uniformly distributed to the periphery. In addition, in order to facilitate the insertion of the heating body 2 into the tobacco product 8, the heating body 2 can be designed into a rod shape, and a spiked end can also be provided on the top of the heating body 2, and the first electrode 5 is arranged around the outer wall of the heating body 2. It is ensured that when the heating element is installed, the first electrode 5 is always in contact with the conductive elastic sheet 11 no matter how much the angle is screwed.

Referring to Fig. 1-Fig. 3, and Fig. 2, in some possible implementation solutions, in order to prevent external dust and other sundries from entering the heating chamber 7 when the smoking appliance is not in use, the housing 1 is slidably provided with a The cigarette socket directly connected at one end covers the sliding cover 14. When the cigarette socket is covered by the sliding cover 14, dust and other sundries will not enter the heating chamber 7. When the cigarette socket is exposed, the tobacco product 8 can be removed from the cigarette socket. The port is inserted into the heating chamber 7 .

Specifically, the top of the housing 1 is provided with a chute 15 , the bottom end of the slide cover 14 is provided with a moving slider 16 assembled in the chute 15 , and grooves parallel to the chute 15 are provided on both sides of the chute 15 , the moving slider 16 is provided with a guide block, and the guide block is inserted into the groove to make the sliding cover 14 slide against the top of the casing 1. When the sliding cover 14 slides to one end of the sliding groove 15, the cigarette insertion port is exposed, and the tobacco product 8 It can be inserted normally. When the sliding cover 14 slides to the other end of the sliding slot 15, the cigarette insertion port is shielded to realize dustproof.

Referring to FIGS. 1 to 3 , and FIGS. 2 to 5 , in some possible implementation solutions, the linear drive mechanism 20 includes a drive motor 2001 , a lead screw 2002 and a lead screw slider 2003 , the base 17 and the lead screw slider 2003 Connected, the driving motor 2001 drives the screw 2002 to rotate to drive the screw slider 2003 and the base 17 to move linearly. Of course, the linear drive mechanism 20 may also use a linear motor or other mechanism.

Specifically, the drive motor 2001 adopts a deceleration motor, a deceleration motor bracket for fixing the deceleration motor is arranged in the housing 1, the lead screw 2002 and the lead screw slider 2003 are connected by threaded transmission, and the heating element 2 is connected to the base 17 through the electrode column 10. Tightly connected, the shell 1 is provided with a cylinder with open ends at both ends, the inner cavity of the cylinder directly constitutes the heating cavity 7, the through hole and the heating body 2 are fitted with a small gap, and the base 17 is slidably installed in the cylinder And located below the partition plate 12, the axis of the cylinder is parallel to but not coincident with the axis of the screw 2002.

Referring to Fig. 1-Fig. 3, after smoking, the deceleration motor is energized and rotated, and the screw slider 2003 will move horizontally along the axial direction of the screw 2002, driving the heating element 2 out of contact with the tobacco product 8, and the heating element 2 stops. When moving, it is still in the first end; after the user removes the cigarette, the deceleration motor rotates in the opposite direction, and the screw slider 2003 will move in the opposite direction. When the screw slider 2003 moves, it drives the heating element 2 to move synchronously. The end face of the seat 17 and the elastic sealing body 13 placed at the bottom of the partition plate 12 are in an interference pre-compression state. At this time, the smoking device is ready to start working.

4 and 5, in some possible implementations, the heating element 2 includes an insulating thin-walled tube 201, a resistance line 202 disposed on the outer peripheral wall of the insulating thin-walled tube 201, and an insulating layer (not shown in the figure) covering the resistance line. shown), the first electrode 5 is arranged outside the insulating layer, the second electrode 6 is fixedly arranged in the insulating thin-walled tube 201, and is connected to both ends of the resistance circuit 202 respectively, and the second electrode 6 is a strip with a tapered top. The top end extends outside the insulating thin-walled tube 201 and does not intersect with the insulating thin-walled tube 201 in space, and the remaining part of the second electrode 6 is in a spatially inclusive relationship with the insulating thin-walled tube 201 in the axial direction. Or part of it is in contact with the inner wall of the insulating thin-walled tube 201 . The inclusion relationship here can be understood as the opposite end of the tapered end of the second electrode 6 does not exceed one end surface of the insulating thin-walled tube 201 in space, and the screw connection hole 601 is directly disposed on the rear end surface of the second electrode 6 .

4 and 5, specifically, the resistance line covers the entire outer peripheral wall of the insulating thin-walled tube 201, and both ends of the insulating thin-walled tube 201 are provided with connection electrodes 203 connected to both ends of the resistance line 202; The connecting electrode 203 at the end of the thin-walled tube 201 constitutes the first electrode 5 , and the connecting electrode 203 at the front end of the insulating thin-walled tube 201 is electrically connected to the second electrode 6 .

In this embodiment, the resistance is distributed over the entire area of the insulating thin-walled tube 201, and the connecting electrodes 203 are arranged at both ends of the insulating thin-walled tube 201, so that the temperature distribution of the heating body 2 is uniform; Because of the pads connected to the wires, the resistance values of the heating elements 2 in the same batch tend to be more consistent.

In this design, the resistance circuit 202 of the heating element 2 adopts, but is not limited to, thick film printing on the surface of the insulating thin-walled tube 201 to print the circuit. The printing materials used include silver, palladium and other metal pastes that can be used for electrical conduction. The key to the implementation lies in The electrical resistance is distributed over the entire area of the insulating thin-walled tube 201 . The surface of the insulating thin-walled tube 201 is provided with resistance lines 202 and connecting electrodes 203 at both ends of the insulating thin-walled tube 201, wherein the resistance lines 202 are completely covered from one end of the insulating thin-walled tube 201 to the other end, and the connecting electrodes 203 are located in the insulating thin-walled tube 201. Both ends of the wall tube 201; wherein, in practical applications, at least one hole needs to be set at the connecting electrode 203 at the top of the insulating thin-walled tube 201, and the hole is filled with conductive material so that the top connecting electrode 203 and the second The electrode 6 is connected in circuit, the connecting electrode 203 at the tail end surrounds the entire surface of the insulating thin-walled tube 201, and the connecting electrode 203 at the top does not have to surround the entire surface of the insulating thin-walled tube 201. Partial circumference, as mentioned above, the resistance line 202 The insulating thin-walled tube 201 is fully covered from one end to the other end. That is, the connection electrode 203 is in a stacked relationship with the resistance circuit 202 on the surface of the insulating thin-walled tube 201 during implementation, rather than an inclusive relationship, that is, the electrode area is not a part of the resistance heating area, and the electrode area is only used as the conduction of the resistance two-pole circuit and cannot be affected. The resistance heating area is fully covered on the surface of the insulating thin-walled tube 201 from one end to the other end. The effect of this design implementation is that the resistance line 202 covering one end of the insulating thin-walled tube 201 to the other end presents a complete temperature field during operation, and will not cause two sections of temperature due to the lack of local resistance. Therefore, the heating chamber 7 The tobacco product 8 is more uniformly heated throughout.

Referring to FIGS. 1 to 3 , it should be explained that the housing 1 includes a middle shell 101 and a top cover 102 and a bottom cover 103 that close both ends of the middle shell 101 . The top cover 102 is connected to the middle shell 101 through the magnet 18 in the same-sex attraction manner. , the middle shell 101 includes two left and right half shells connected by a buckle, and the bottom cover 103 and the middle shell 101 are also connected by a buckle. In this way, the installation and removal of components such as the linear drive mechanism can be facilitated.

The above-mentioned embodiments are only examples to clearly illustrate the present invention, and are not intended to limit the embodiments. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. Neither need nor can all embodiments be exhaustive here. However, the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (11)

1. A heating and baking low-temperature smoking device, comprising a casing, a heating cavity for accommodating tobacco products is formed in the casing, a heating body is arranged in the heating cavity, and it is characterized in that: a heating cavity is provided in the heating cavity for an installation cavity in which the heating element is inserted and installed, an electrode post connected to the power supply in the housing and a conductive elastic sheet are fixedly arranged in the installation cavity, and a plurality of conductive elastic sheets are arranged around the electrode post; The heating body is provided with a first electrode and a second electrode, and the heating body is provided with a mounting hole; When the heating element is detachably inserted into the installation cavity, the conductive elastic sheet is in elastic contact with the first electrode on the side wall of the heating element, and the electrode post is inserted into the installation hole on the heating element and in contact with the second electrode. 2 . The heating and baking low-temperature smoking tool according to claim 1 , wherein the electrode post is inserted into the mounting hole and is threadedly connected to the heating element. 3 . 3. The heating and baking low-temperature smoking device according to claim 1 or 2, wherein the heating cavity has an opposite first end and a second end; wherein, the first end is used for inserting the tobacco product, A base is matched and slidably installed in the second end, and a linear drive mechanism for driving the base to move back and forth in the heating cavity is arranged in the casing; There is also a partition plate with a through hole in the heating chamber between the first end and the second end, and the heating body matches all the parts fixed on the base after passing through the through hole. into the installation cavity. 4 . The heating and baking low-temperature smoking tool according to claim 3 , wherein an elastic sealing body is arranged between the base and the partition plate, and the base has a first position and a second position; wherein , When the base is located at the first position, the base is close to the partition plate, and the elastic sealing body is pressed to seal the through hole; When the base is located at the second position, the base is away from the partition plate, and the heat generating body is not separated from the through hole. 5. The heating and baking low-temperature smoking tool according to claim 4, wherein the linear drive mechanism comprises a drive motor, a screw rod and a screw slider, the base is connected with the screw slider, and the screw slider is connected to the base. The drive motor drives the screw to rotate to drive the screw slider and the base to move linearly. 6. The heating and baking low-temperature smoking device according to claim 1 or 2, wherein the second electrode is arranged inside the heating body, and the electrode post is inserted into the mounting hole and directly connected to the second electrode Threaded connection. 7 . The heating and baking low-temperature smoking tool according to claim 6 , wherein the heating element is in the shape of a rod, and the first electrode is arranged in a circle around the outer wall of the heating element. 8 . 8 . The heating and baking low-temperature smoking device according to claim 6 , wherein the heating element comprises an insulating thin-walled pipe, a resistance circuit arranged on the outer peripheral wall of the insulating thin-walled pipe, and an insulating covering covering the resistance circuit. 9 . layer, the second electrode is fixedly arranged in the insulating thin-walled tube, and the first electrode and the second electrode are respectively connected to both ends of the resistance line. 9 . The heating element according to claim 8 , wherein the top end of the second electrode is tapered and extends to the outside of the insulating thin-walled tube. 10 . 10 . The heating element according to claim 8 , wherein the resistance line covers the entire outer peripheral wall of the insulating thin-walled tube, and both ends of the insulating thin-walled tube are connected with both ends of the resistance line. 11 . the connecting electrodes; where, The connecting electrode located at the tail end of the insulating thin-walled tube constitutes the first electrode, and the connecting electrode located at the front end of the insulating thin-walled tube is electrically connected to the second electrode. 11 . The heating element according to claim 10 , wherein the insulating thin-walled tube is provided with at least one perforation corresponding to the position of the connection electrode at the top, and the perforation is filled with the connection electrode and the The conductive substrate in communication with the second electrode.

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